WO2024001320A1

WO2024001320A1 - Air conditioner and defrosting control method therefor

Info

Publication number: WO2024001320A1
Application number: PCT/CN2023/082785
Authority: WO
Inventors: 张素珍; 王军
Original assignee: 海信空调有限公司
Priority date: 2022-06-30
Filing date: 2023-03-21
Publication date: 2024-01-04
Also published as: CN117940714A

Abstract

An air conditioner and a defrosting control method therefor. The air conditioner comprises an indoor unit, an outdoor unit and a controller. The controller is configured to: determine that the air conditioner is in a heating mode, acquire a first operating parameter of the air conditioner, control the air conditioner to enter a pseudo defrosting mode according to the first operating parameter, acquire a second operating parameter of the air conditioner in the pseudo defrosting mode, control the air conditioner to perform heating, control the air conditioner to refrain from performing defrosting, and control the air conditioner to exit the pseudo defrosting mode according to a variation trend of at least one of the first operating parameter or the second operating parameter.

Description

空调器及其除霜控制方法Air conditioner and defrost control method thereof

本申请要求于2022年06月30日提交的、申请号为202210760704.3的中国专利申请的优先权；2022年06月30日提交的、申请号为202210760703.9的中国专利申请的优先权；2022年06月30日提交的、申请号为202210763500.5的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of the Chinese patent application with application number 202210760704.3 submitted on June 30, 2022; the priority of the Chinese patent application with application number 202210760703.9 submitted on June 30, 2022; June 2022 The priority of the Chinese patent application with application number 202210763500.5 submitted on the 30th, the entire content of which is incorporated into this application by reference.

技术领域Technical field

本公开涉及空气调节技术领域，尤其涉及一种空调器及其除霜控制方法。The present disclosure relates to the technical field of air conditioning, and in particular to an air conditioner and a defrost control method thereof.

背景技术Background technique

随着科技的进步与人们生活水平的提高，空调器成为了人们工作和生活中常用的用品。在冬季，室外温度较低，空调器可以运行在制热模式下，以对室内进行供暖。并且，由于冬季的室外温度低，空调器在长时间运行制热模式后，空调器的室外机会结霜。With the advancement of science and technology and the improvement of people's living standards, air conditioners have become a commonly used item in people's work and life. In winter, when the outdoor temperature is low, the air conditioner can run in heating mode to heat the room. Moreover, due to the low outdoor temperature in winter, frost may form on the outside of the air conditioner after the air conditioner is operated in the heating mode for a long time.

发明内容Contents of the invention

一方面，提供一种空调器。所述空调器包括室内机、室外机以及控制器。所述控制器被配置为确定所述空调器处于制热模式，获取所述空调器的第一运行参数，根据所述第一运行参数控制所述空调器进入假除霜模式，在所述假除霜模式下，获取所述空调器的第二运行参数，控制所述空调器制热，并控制所述空调器不进行除霜，根据所述第一运行参数或所述第二运行参数中的至少一个的变化趋势，控制所述空调器退出所述假除霜模式。On the one hand, an air conditioner is provided. The air conditioner includes an indoor unit, an outdoor unit and a controller. The controller is configured to determine that the air conditioner is in a heating mode, obtain a first operating parameter of the air conditioner, and control the air conditioner to enter a false defrost mode according to the first operating parameter. In the defrost mode, obtain the second operating parameters of the air conditioner, control the heating of the air conditioner, and control the air conditioner not to defrost, according to the first operating parameters or the second operating parameters. According to at least one changing trend, the air conditioner is controlled to exit the false defrost mode.

另一方面，提供一种空调器的除霜方法。所述除霜方法应用到所述空调器的控制器上，所述空调器包括室内机以及室外机，所述方法包括：在所述空调器处于制热模式下，获取所述空调器的第一运行参数，根据所述第一运行参数控制所述空调器进入假除霜模式，在所述假除霜模式下，获取所述空调器的第二运行参数，控制所述空调器制热，并控制所述空调器不进行除霜，根据所述第一运行参数或所述第二运行参数中的至少一个的变化趋势，控制所述空调器退出所述假除霜模式。On the other hand, a defrosting method for an air conditioner is provided. The defrosting method is applied to the controller of the air conditioner, and the air conditioner includes an indoor unit and an outdoor unit. The method includes: when the air conditioner is in the heating mode, obtaining the first value of the air conditioner. an operating parameter, controlling the air conditioner to enter the false defrost mode according to the first operating parameter, and in the false defrost mode, obtaining the second operating parameter of the air conditioner and controlling the heating of the air conditioner, The air conditioner is controlled not to perform defrosting, and the air conditioner is controlled to exit the false defrost mode according to a changing trend of at least one of the first operating parameter or the second operating parameter.

附图说明Description of drawings

为了更清楚地说明本公开中的技术方案，下面将对本公开一些实施例中所需要使用的附图作简单地介绍，然而，下面描述中的附图仅仅是本公开的一些实施例的附图，对于本领域普通技术人员来讲，还可以根据这些附图获得其他的附图。此外，以下描述中的附图可以视作示意图，并非对本公开实施例所涉及的产品的实际尺寸、方法的实际流程、信号的实际时序等的限制。In order to explain the technical solutions in the present disclosure more clearly, the drawings required to be used in some embodiments of the present disclosure will be briefly introduced below. However, the drawings in the following description are only the drawings of some embodiments of the present disclosure. , for those of ordinary skill in the art, other drawings can also be obtained based on these drawings. In addition, the drawings in the following description can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of the present disclosure.

图1为根据一些实施例的空调器的结构图；Figure 1 is a structural diagram of an air conditioner according to some embodiments;

图2为根据一些实施例的空调器的另一种结构图；Figure 2 is another structural diagram of an air conditioner according to some embodiments;

图3为根据一些实施例的空调器的又一种结构图；Figure 3 is yet another structural diagram of an air conditioner according to some embodiments;

图4为根据一些实施例的空调器的框图；Figure 4 is a block diagram of an air conditioner according to some embodiments;

图5为根据一些实施例的空调器中的控制器的一种流程图；Figure 5 is a flow chart of a controller in an air conditioner according to some embodiments;

图6为根据一些实施例的压缩机的运行频率和第一温度对应关系的示意图；Figure 6 is a schematic diagram illustrating the corresponding relationship between the operating frequency of the compressor and the first temperature according to some embodiments;

图7为根据一些实施例的空调器的除霜控制方法的一种流程图；Figure 7 is a flow chart of a defrost control method of an air conditioner according to some embodiments;

图8为根据一些实施例的空调器的除霜控制方法的另一种流程图；Figure 8 is another flowchart of a defrost control method of an air conditioner according to some embodiments;

图9为根据一些实施例的空调器的除霜控制方法的又一种流程图；Figure 9 is another flow chart of a defrost control method of an air conditioner according to some embodiments;

图10为根据另一些实施例的空调器中的控制器的一种流程图；Figure 10 is a flow chart of a controller in an air conditioner according to other embodiments;

图11为根据另一些实施例的空调器的除霜控制方法的一种流程图；Figure 11 is a flow chart of a defrost control method for an air conditioner according to other embodiments;

图12为根据又一些实施例的空调器中的控制器的一种流程图；Fig. 12 is a flow chart of a controller in an air conditioner according to still other embodiments;

图13为根据又一些实施例的空调器中的控制器的另一种流程图；Figure 13 is another flowchart of a controller in an air conditioner according to further embodiments;

图14为根据又一些实施例的空调器的除霜控制方法的一种流程图；Figure 14 is a flowchart of a defrost control method for an air conditioner according to yet another embodiment;

图15为根据又一些实施例的空调器的除霜控制方法的另一种流程图。FIG. 15 is another flowchart of a defrost control method of an air conditioner according to further embodiments.

具体实施方式Detailed ways

下面将结合附图，对本公开一些实施例进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开所提供的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本公开保护的范围。Some embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present disclosure. Based on the embodiments provided in this disclosure, the ability All other embodiments available to those of ordinary skill in the art fall within the protection scope of this disclosure.

除非上下文另有要求，否则，在整个说明书和权利要求书中，术语“包括(comprise)”及其其他形式例如第三人称单数形式“包括(comprises)”和现在分词形式“包括(comprising)”被解释为开放、包含的意思，即为“包含，但不限于”。在说明书的描述中，术语“一个实施例(one embodiment)”、“一些实施例(some embodiments)”、“示例性实施例(exemplary embodiments)”、“示例(example)”、“特定示例(specific example)”或“一些示例(some examples)”等旨在表明与该实施例或示例相关的特定特征、结构、材料或特性包括在本公开的至少一个实施例或示例中。上述术语的示意性表示不一定是指同一实施例或示例。此外，所述的特定特征、结构、材料或特点可以以任何适当方式包括在任何一个或多个实施例或示例中。Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms such as the third person singular "comprises" and the present participle "comprising" are used. Interpreted as open and inclusive, it means "including, but not limited to." In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific "example" or "some examples" and the like are intended to indicate that a particular feature, structure, material or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be included in any suitable manner in any one or more embodiments or examples.

以下，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本公开实施例的描述中，除非另有说明，“多个”的含义是两个或两个以上。Hereinafter, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

在描述一些实施例时，可能使用了“耦接”和“连接”及其衍伸的表达。术语“连接”应做广义理解，例如，“连接”可以是固定连接，也可以是可拆卸连接，或成一体；可以是直接相连，也可以通过中间媒介间接相连。术语“耦接”表明两个或两个以上的部件有直接物理接触或电接触。术语“耦接”或“通信耦合(Communicatively Coupled)”也可能指两个或两个以上部件彼此间并无直接接触，但仍彼此协作或相互作用。这里所公开的实施例并不必然限制于本文内容。In describing some embodiments, expressions "coupled" and "connected" and their derivatives may be used. The term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integrated connection; it can be a direct connection or an indirect connection through an intermediate medium. The term "coupled" indicates that two or more components are in direct physical or electrical contact. The term "coupled" or "communicatively coupled" may also refer to two or more components that are not in direct contact with each other but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited by the content herein.

“A和/或B”，包括以下三种组合：仅A，仅B，及A和B的组合。"A and/or B" includes the following three combinations: A only, B only, and a combination of A and B.

如本文中所使用，根据上下文，术语“如果”任选地被解释为意思是“当……时”或“在……时”或“响应于确定”或“响应于检测到”。类似地，根据上下文，短语“如果确定……”或“如果检测到[所陈述的条件或事件]”任选地被解释为是指“在确定……时”或“响应于确定……”或在“检测到[所陈述的条件或事件]时”或“响应于检测到[所陈述的条件或事件]”。As used herein, the term "if" is optionally interpreted to mean "when" or "in response to" or "in response to determining" or "in response to detecting," depending on the context. Similarly, depending on the context, the phrase "if it is determined..." or "if [stated condition or event] is detected" is optionally interpreted to mean "when it is determined..." or "in response to the determination..." or “on detection of [stated condition or event]” or “in response to detection of [stated condition or event].”

本文中“适用于”或“被配置为”的使用意味着开放和包容性的语言，其不排除适用于或被配置为执行额外任务或步骤的设备。The use of "suitable for" or "configured to" in this document implies open and inclusive language that does not exclude devices that are suitable for or configured to perform additional tasks or steps.

由于空调器的室外机在结霜后，霜层会增加室外机的热阻，并导致室外空气流通面积减小、流动阻力增大，使得室外机的风量减小，进而导致室外机的热交换效果变差。因此，在空调器运行一段时间后，需要对其进行除霜。After the outdoor unit of the air conditioner is frosted, the frost layer will increase the thermal resistance of the outdoor unit, causing the outdoor air circulation area to decrease and the flow resistance to increase, resulting in a decrease in the air volume of the outdoor unit, which in turn leads to a loss of heat exchange in the outdoor unit. The effect becomes worse. Therefore, after the air conditioner has been running for a period of time, it needs to be defrosted.

目前的除霜方法主要有逆循环除霜、热气旁通除霜和相变蓄能除霜。当空调器采用逆循环除霜方法时，室内换热器作为蒸发器，会导致室内环境温度下降，影响空调器的制热效果。当空调器采用热气旁通除霜方法时，通过在压缩机的排气口设置一支旁通回路，可以将压缩机排出的高温气态冷媒引流至室外换热器内以实现除霜。但热气旁通除霜方法需要的时间较长，通常其时间为逆循环除霜时间的两倍以上。相变蓄能除霜方法是指在制热模式下通过蓄热器储存部分热量，并在除霜时释放出热量以进行除霜。但相变蓄能除霜会影响压缩机的散热，容易导致压缩机的排气温度过高，并且蓄热器的储能有限。The current defrosting methods mainly include reverse cycle defrost, hot gas bypass defrost and phase change energy storage defrost. When the air conditioner uses the reverse cycle defrosting method, the indoor heat exchanger acts as an evaporator, which will cause the indoor ambient temperature to drop and affect the heating effect of the air conditioner. When the air conditioner adopts the hot gas bypass defrosting method, by setting up a bypass loop at the exhaust port of the compressor, the high-temperature gaseous refrigerant discharged from the compressor can be directed to the outdoor heat exchanger to achieve defrosting. However, the hot gas bypass defrost method requires a longer time, usually more than twice the reverse cycle defrost time. The phase change energy storage defrost method refers to storing part of the heat through the heat accumulator in heating mode and releasing the heat for defrosting during defrosting. However, phase change energy storage defrost will affect the heat dissipation of the compressor, easily causing the compressor exhaust temperature to be too high, and the energy storage of the heat accumulator is limited.

通常，可以通过室外环境温度与室外换热器中的盘管温度之间的差值，确定是否对空调器进行除霜。然而，在一些场景下，例如，当室内温差增大、或者空调器由静音或低风模式变为高风模式，或者空调器由睡眠或静音模式转变为制热模式时，压缩机的运行频率突然上升，导致室外换热器的盘管温度下降，从而室外环境温度与室外换热器的盘管温度之差变大，空调器需要对室外换热器进行除霜。然而，此时的室外换热器上可能无霜或霜较少，空调器进行除霜将引起室内温度大幅波动，影响空调器的制热效果，且耗费能源。需要说明的是，在所述静音、低风、睡眠模式下，空调器中压缩机的运行频率较小。Generally, the difference between the outdoor ambient temperature and the coil temperature in the outdoor heat exchanger can be used to determine whether to defrost the air conditioner. However, in some scenarios, for example, when the indoor temperature difference increases, or the air conditioner changes from silent or low wind mode to high wind mode, or the air conditioner changes from sleep or silent mode to heating mode, the operating frequency of the compressor may change. The sudden rise causes the coil temperature of the outdoor heat exchanger to drop, so the difference between the outdoor ambient temperature and the coil temperature of the outdoor heat exchanger becomes larger, and the air conditioner needs to defrost the outdoor heat exchanger. However, there may be no or less frost on the outdoor heat exchanger at this time. Defrosting the air conditioner will cause large fluctuations in indoor temperature, affecting the heating effect of the air conditioner and consuming energy. It should be noted that in the silent, low wind, and sleep modes, the operating frequency of the compressor in the air conditioner is small.

例如，在所述静音模式下，空调器中的室内风机的转速和压缩机的运行频率较小，以降低空调器的噪音，实现静音效果。在睡眠模式下，通过逐渐降低设定温度以使室内环境温度逐渐下降，模拟夜间人体体温的自然调节过程，从而在提供舒适睡眠环境的情况下实现节能效果。通常，低风模式用于室内环境温度已经满足需求但仍需要空气流动的情况，在所述低风模式下，空调器通过降低室内机的送风风量，以减少空气流动，从而实现节能效果。所述高风模式与所述低风模式对应，在所述高风模式下，空调器通过增大室内机的送风风量，以增强空气流动，从而使室内环境温度快速满足需求。For example, in the silent mode, the indoor fan speed and the operating frequency of the compressor in the air conditioner are smaller to reduce the noise of the air conditioner and achieve a silent effect. In sleep mode, the indoor ambient temperature gradually decreases by gradually lowering the set temperature, simulating the natural adjustment process of human body temperature at night, thereby achieving a comfortable sleeping environment. Energy saving effect is achieved. Generally, the low-wind mode is used when the indoor ambient temperature has met the demand but air flow is still needed. In the low-wind mode, the air conditioner reduces the air supply volume of the indoor unit to reduce air flow, thereby achieving energy saving effects. The high wind mode corresponds to the low wind mode. In the high wind mode, the air conditioner increases the air supply volume of the indoor unit to enhance air flow, so that the indoor ambient temperature quickly meets the demand.

为了解决上述问题，本公开一些实施例提供了一种空调器1000。In order to solve the above problems, some embodiments of the present disclosure provide an air conditioner 1000.

图1为根据一些实施例的空调器的结构图。在一些实施例中，如图1所示，空调器1000包括室内机10和室外机20。室内机10和室外机20通过管路连接以传输冷媒。需要说明的是，图1以空调器1000为挂壁式空调器，且室内机10挂设在室内墙壁上为例进行示意。当然，本公开一些实施例中的空调器1000也可以为立柜式空调器。另外，由于图1中的室内机10位于室内，而室外机20位于室外，因此图1中用虚线来表示室外机20。Figure 1 is a structural diagram of an air conditioner according to some embodiments. In some embodiments, as shown in FIG. 1 , the air conditioner 1000 includes an indoor unit 10 and an outdoor unit 20 . The indoor unit 10 and the outdoor unit 20 are connected through pipelines to transport refrigerant. It should be noted that FIG. 1 takes the air conditioner 1000 as a wall-mounted air conditioner and the indoor unit 10 is hung on an indoor wall as an example for illustration. Of course, the air conditioner 1000 in some embodiments of the present disclosure may also be a standing cabinet air conditioner. In addition, since the indoor unit 10 in FIG. 1 is located indoors and the outdoor unit 20 is located outdoors, the outdoor unit 20 is represented by a dotted line in FIG. 1 .

图2为根据一些实施例的空调器的另一种结构图。图3为根据一些实施例的空调器的又一种结构图。Figure 2 is another structural diagram of an air conditioner according to some embodiments. Figure 3 is yet another structural diagram of an air conditioner according to some embodiments.

在一些实施例中，如图2所示，室内机10包括室内换热器101和室内风机102。室外机20包括压缩机201、室外换热器202、室外风机203、膨胀阀204(如图3所示)和四通阀205。依序连接的压缩机201、室外换热器202、膨胀阀204和室内换热器101形成冷媒回路。冷媒在该冷媒回路中循环流动，并通过室外换热器202与室内换热器101分别与空气进行换热，以实现空调器1000的制冷模式或制热模式。In some embodiments, as shown in FIG. 2 , the indoor unit 10 includes an indoor heat exchanger 101 and an indoor fan 102 . The outdoor unit 20 includes a compressor 201, an outdoor heat exchanger 202, an outdoor fan 203, an expansion valve 204 (as shown in Figure 3) and a four-way valve 205. The compressor 201, outdoor heat exchanger 202, expansion valve 204 and indoor heat exchanger 101 connected in sequence form a refrigerant circuit. The refrigerant circulates in the refrigerant circuit and exchanges heat with the air through the outdoor heat exchanger 202 and the indoor heat exchanger 101 respectively to realize the cooling mode or the heating mode of the air conditioner 1000 .

压缩机201被配置为压缩冷媒以使低压冷媒受压缩形成高压冷媒。The compressor 201 is configured to compress the refrigerant so that the low-pressure refrigerant is compressed to form a high-pressure refrigerant.

室外换热器202被配置为将室外空气与在室外换热器202中传输的冷媒进行热交换。例如，室外换热器202在空调器1000的制冷模式下作为冷凝器进行工作，使得由压缩机201压缩的冷媒通过室外换热器202将热量散发至室外空气而冷凝；室外换热器202在空调器1000的制热模式下作为蒸发器进行工作，使得减压后的冷媒通过室外换热器202吸收室外空气的热量而蒸发。室外换热器202内设有盘管，所述盘管与冷媒回路连通，冷媒在室外换热器202的盘管中流动以与室外空气交换热量。The outdoor heat exchanger 202 is configured to perform heat exchange between outdoor air and the refrigerant transported in the outdoor heat exchanger 202 . For example, the outdoor heat exchanger 202 works as a condenser in the cooling mode of the air conditioner 1000, so that the refrigerant compressed by the compressor 201 dissipates heat to the outdoor air through the outdoor heat exchanger 202 and condenses; the outdoor heat exchanger 202 In the heating mode, the air conditioner 1000 operates as an evaporator, so that the decompressed refrigerant absorbs heat from the outdoor air through the outdoor heat exchanger 202 and evaporates. A coil is provided in the outdoor heat exchanger 202, and the coil is connected with the refrigerant circuit. The refrigerant flows in the coil of the outdoor heat exchanger 202 to exchange heat with the outdoor air.

室外风机203被配置为将室外空气经室外机20的室外进风口吸入至室外机20内，并将与室外换热器202换热后的室外空气经由室外机20的室外出风口送出。室外风机203为室外空气的流动提供动力，以使室外空气流经室外换热器202与室外换热器202中的冷媒进行热量交换。The outdoor fan 203 is configured to suck outdoor air into the outdoor unit 20 through the outdoor air inlet of the outdoor unit 20 and send the outdoor air after heat exchange with the outdoor heat exchanger 202 through the outdoor air outlet of the outdoor unit 20 . The outdoor fan 203 provides power for the flow of outdoor air, so that the outdoor air flows through the outdoor heat exchanger 202 to exchange heat with the refrigerant in the outdoor heat exchanger 202 .

膨胀阀204连接于室外换热器202与室内换热器101之间，由膨胀阀204的开度大小调节流经室外换热器202和室内换热器101的冷媒压力，以调节流通于室外换热器202和室内换热器101之间的冷媒流量。流通于室外换热器202和室内换热器101之间的冷媒的流量和压力将影响室外换热器202和室内换热器101的换热性能。膨胀阀204的开度是可调节的，以控制流经膨胀阀204的冷媒的流量和压力。例如，膨胀阀204使在冷凝器中冷凝的液态冷媒膨胀为低压的液态冷媒。需要说明的是，本公开一些实施例以膨胀阀204设置在室外机20中为例进行说明。当然，在一些实施例中，膨胀阀204也可以设置在室内机10中。The expansion valve 204 is connected between the outdoor heat exchanger 202 and the indoor heat exchanger 101. The opening of the expansion valve 204 adjusts the pressure of the refrigerant flowing through the outdoor heat exchanger 202 and the indoor heat exchanger 101 to regulate the flow to the outdoors. The refrigerant flow rate between the heat exchanger 202 and the indoor heat exchanger 101. The flow rate and pressure of the refrigerant flowing between the outdoor heat exchanger 202 and the indoor heat exchanger 101 will affect the heat exchange performance of the outdoor heat exchanger 202 and the indoor heat exchanger 101 . The opening of the expansion valve 204 is adjustable to control the flow rate and pressure of the refrigerant flowing through the expansion valve 204 . For example, the expansion valve 204 expands the liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. It should be noted that, in some embodiments of the present disclosure, the expansion valve 204 is provided in the outdoor unit 20 as an example for description. Of course, in some embodiments, the expansion valve 204 may also be provided in the indoor unit 10 .

四通阀205连接于所述冷媒回路内，且被配置为切换冷媒在所述冷媒回路中的流向以使空调器1000执行制冷模式或制热模式。The four-way valve 205 is connected to the refrigerant circuit and is configured to switch the flow direction of the refrigerant in the refrigerant circuit so that the air conditioner 1000 executes the cooling mode or the heating mode.

室内换热器101被配置为将室内空气与在室内换热器101中传输的冷媒进行热交换。例如，室内换热器101在空调器1000的制冷模式下作为蒸发器进行工作，使得经由室外换热器202散热后的冷媒通过室内换热器101吸收室内空气的热量而蒸发；室内换热器101在空调器1000的制热模式下作为冷凝器进行工作，使得经由室外换热器202吸热后的冷媒通过室内换热器101将热量散发至室内空气而冷凝。室内换热器101内设有盘管，所述盘管与冷媒回路连通，冷媒在室内换热器101的盘管中流动以与室内空气交换热量。The indoor heat exchanger 101 is configured to perform heat exchange between indoor air and the refrigerant transported in the indoor heat exchanger 101 . For example, the indoor heat exchanger 101 works as an evaporator in the cooling mode of the air conditioner 1000, so that the refrigerant that has been dissipated through the outdoor heat exchanger 202 absorbs the heat of the indoor air through the indoor heat exchanger 101 and evaporates; the indoor heat exchanger 101 works as a condenser in the heating mode of the air conditioner 1000, so that the refrigerant that has absorbed heat through the outdoor heat exchanger 202 dissipates heat to the indoor air through the indoor heat exchanger 101 to be condensed. A coil is provided in the indoor heat exchanger 101, and the coil is connected with the refrigerant circuit. The refrigerant flows in the coil of the indoor heat exchanger 101 to exchange heat with the indoor air.

室内风机102被配置为将室内空气经室内机10的室内进风口吸入至室内机10内，并将与室内换热器101换热后的室内空气经由室内机10的室内出风口送出。室内风机102为室内空气的流动提供动力。The indoor fan 102 is configured to suck indoor air into the indoor unit 10 through the indoor air inlet of the indoor unit 10 and send the indoor air after heat exchange with the indoor heat exchanger 101 through the indoor air outlet of the indoor unit 10 . The indoor fan 102 provides power for the flow of indoor air.

图4为根据一些实施例的空调器的框图。 Figure 4 is a block diagram of an air conditioner according to some embodiments.

在一些实施例中，如图4所示，空调器1000还包括控制器40。控制器40被配置为控制空调器1000中的各个部件工作，以实现空调器1000的各个预定功能。例如，控制器40控制压缩机201的运行频率、膨胀阀204的开度、室内风机102的转速S。控制器40与压缩机201、膨胀阀204、室外风机203和室内风机102通过数据线相连以传输通信信息。In some embodiments, as shown in FIG. 4 , the air conditioner 1000 further includes a controller 40 . The controller 40 is configured to control the operation of various components in the air conditioner 1000 to implement various predetermined functions of the air conditioner 1000 . For example, the controller 40 controls the operating frequency of the compressor 201, the opening of the expansion valve 204, and the rotation speed S of the indoor fan 102. The controller 40 is connected to the compressor 201, the expansion valve 204, the outdoor fan 203 and the indoor fan 102 through data lines to transmit communication information.

在一些实施例中，如图2所示，控制器40包括第一子控制器401和第二子控制器402。第一子控制器401位于室内机10内，第二子控制器402位于室外机20内。并且，第一子控制器401与第二子控制器402通过信号线连接，且可以相互发送或接收信号。需要说明的是，第一子控制器401和第二子控制器402也可以为同一控制器，本公开对此不做限制。In some embodiments, as shown in FIG. 2 , the controller 40 includes a first sub-controller 401 and a second sub-controller 402 . The first sub-controller 401 is located in the indoor unit 10 , and the second sub-controller 402 is located in the outdoor unit 20 . Moreover, the first sub-controller 401 and the second sub-controller 402 are connected through signal lines, and can send or receive signals to each other. It should be noted that the first sub-controller 401 and the second sub-controller 402 may also be the same controller, and this disclosure does not limit this.

控制器40包括中央处理器(central processing unit,CPU)、微处理器(microprocessor)、专用集成电路(application specific integrated circuit,ASIC)，并且可以被配置为当处理器执行存储在耦合到控制器40的非暂时性计算机可读介质中的程序时，执行控制器40中描述的相应操作。The controller 40 includes a central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), and may be configured to operate when the processor executes storage coupled to the controller 40 When the program in the non-transitory computer-readable medium is loaded, the corresponding operations described in the controller 40 are performed.

在一些实施例中，如图1所示，空调器1000还包括遥控器30，遥控器30被配置为与控制器40进行通信，以实现用户与空调器1000之间的交互。遥控器30可以使用红外、蓝牙、wifi或其他通信方式。In some embodiments, as shown in FIG. 1 , the air conditioner 1000 further includes a remote control 30 configured to communicate with the controller 40 to implement interaction between the user and the air conditioner 1000 . The remote control 30 can use infrared, Bluetooth, wifi or other communication methods.

在一些实施例中，如图2和图4所示，室外机20还包括第一温度传感器206和第四温度传感器207。第一温度传感器206设置在室外换热器202的盘管上，且被配置为检测室外换热器202内的盘管的第一温度T1。第四温度传感器207设置在室外换热器202上，且被配置为检测室外环境温度(即第四温度T4)。控制器40与第一温度传感器206和第四温度传感器207耦接，以接收第一温度传感器206检测的室外换热器202内的盘管的温度，以及第四温度传感器207检测的室外环境温度。In some embodiments, as shown in FIGS. 2 and 4 , the outdoor unit 20 further includes a first temperature sensor 206 and a fourth temperature sensor 207 . The first temperature sensor 206 is disposed on the coil of the outdoor heat exchanger 202 and is configured to detect the first temperature T1 of the coil within the outdoor heat exchanger 202 . The fourth temperature sensor 207 is provided on the outdoor heat exchanger 202 and is configured to detect the outdoor ambient temperature (ie, the fourth temperature T4). The controller 40 is coupled to the first temperature sensor 206 and the fourth temperature sensor 207 to receive the temperature of the coil in the outdoor heat exchanger 202 detected by the first temperature sensor 206 and the outdoor ambient temperature detected by the fourth temperature sensor 207 .

在一些实施例中，如图2和图4所示，室内机10还包括第二温度传感器103和第三温度传感器104。第二温度传感器103设置在室内换热器101内的盘管上，且被配置为检测室内换热器101内的盘管的第二温度T2。第三温度传感器104设置在室内换热器101上，且被配置为检测室内环境温度(即第三温度T3)。控制器40与第二温度传感器103与第三温度传感器104耦接，以接收第二温度传感器103检测的室内换热器101内盘管的温度，以及第三温度传感器104检测的室内环境温度。In some embodiments, as shown in FIGS. 2 and 4 , the indoor unit 10 further includes a second temperature sensor 103 and a third temperature sensor 104 . The second temperature sensor 103 is disposed on the coil in the indoor heat exchanger 101 and is configured to detect the second temperature T2 of the coil in the indoor heat exchanger 101 . The third temperature sensor 104 is provided on the indoor heat exchanger 101 and is configured to detect the indoor ambient temperature (ie, the third temperature T3). The controller 40 is coupled to the second temperature sensor 103 and the third temperature sensor 104 to receive the temperature of the coil in the indoor heat exchanger 101 detected by the second temperature sensor 103 and the indoor ambient temperature detected by the third temperature sensor 104 .

下面以图3为例详细说明空调器1000的制冷模式、制热模式以及除霜模式。图3中，实线箭头表示空调器1000在制冷模式下的冷媒的流向，虚线箭头表示空调器1000在制热模式下的冷媒的流向。The cooling mode, heating mode and defrost mode of the air conditioner 1000 will be described in detail below using FIG. 3 as an example. In FIG. 3 , the solid arrows indicate the flow direction of the refrigerant when the air conditioner 1000 is in the cooling mode, and the dotted arrows indicate the flow direction of the refrigerant when the air conditioner 1000 is in the heating mode.

在空调器1000运行在制冷模式的情况下，冷媒依次流过压缩机201、四通阀205、室外换热器202、膨胀阀204、室内换热器101和压缩机201。室外换热器202作为冷凝器、室内换热器101作为蒸发器。冷凝器将其内部的冷媒的热量散发至室外空气中，蒸发器内的冷媒则吸收室内空气的热量以使室内温度降低，以对室内环境进行制冷。When the air conditioner 1000 operates in the cooling mode, the refrigerant flows through the compressor 201, the four-way valve 205, the outdoor heat exchanger 202, the expansion valve 204, the indoor heat exchanger 101 and the compressor 201 in sequence. The outdoor heat exchanger 202 serves as a condenser, and the indoor heat exchanger 101 serves as an evaporator. The condenser dissipates the heat of the refrigerant inside it to the outdoor air, and the refrigerant in the evaporator absorbs the heat of the indoor air to lower the indoor temperature to cool the indoor environment.

在空调器1000运行在制热模式的情况下，冷媒依次流过压缩机201、四通阀205、室内换热器101、膨胀阀204、室外换热器202和压缩机201。室内换热器101作为冷凝器、室外换热器202作为蒸发器。冷凝器将其内部的冷媒的热量散发至室内空气中以使室内温度升高，以对室内环境进行制热。蒸发器内的冷媒则吸收室外空气的热量。When the air conditioner 1000 operates in the heating mode, the refrigerant flows through the compressor 201, the four-way valve 205, the indoor heat exchanger 101, the expansion valve 204, the outdoor heat exchanger 202 and the compressor 201 in sequence. The indoor heat exchanger 101 serves as a condenser, and the outdoor heat exchanger 202 serves as an evaporator. The condenser dissipates the heat of the refrigerant inside it to the indoor air to increase the indoor temperature to heat the indoor environment. The refrigerant in the evaporator absorbs heat from the outdoor air.

对于采用逆循环除霜方法进行除霜的空调器1000，在空调器1000运行在除霜模式的情况下，冷媒的流向与空调器1000在制冷模式下的冷媒的流向相同。For the air conditioner 1000 that adopts the reverse cycle defrosting method for defrosting, when the air conditioner 1000 operates in the defrost mode, the flow direction of the refrigerant is the same as the flow direction of the refrigerant when the air conditioner 1000 operates in the cooling mode.

下面详细描述本公开一些实施例中的控制器40的执行步骤。The execution steps of the controller 40 in some embodiments of the present disclosure are described in detail below.

图5为根据一些实施例的空调器中的控制器的一种流程图。Figure 5 is a flow chart of a controller in an air conditioner according to some embodiments.

在一些实施例中，如图5所示，控制器40被配置为执行步骤11至步骤14。In some embodiments, as shown in FIG. 5 , the controller 40 is configured to perform steps 11 to 14 .

在步骤11中，在空调器1000处于制热模式下，获取压缩机201的运行频率F。In step 11, when the air conditioner 1000 is in the heating mode, the operating frequency F of the compressor 201 is obtained.

例如，当控制器40接收到制热信号(如，遥控器30发出的信号)时，控制器40控制空调器1000中的对应部件的运行状态以进行制热。在此情况下，控制器40可以确定空调器1000处于制热模式。控制器40可通过电流或电压传感器获取压缩机201的电流或电压曲线，然后根据电流或电压曲线计算出压缩机201的运行频率F。当然，确定空调器1000 处于制热模式和获取压缩机201的运行频率F的方法并不局限于此，本公开对此不作限制。For example, when the controller 40 receives a heating signal (eg, a signal sent by the remote control 30 ), the controller 40 controls the operating status of the corresponding components in the air conditioner 1000 to perform heating. In this case, the controller 40 may determine that the air conditioner 1000 is in the heating mode. The controller 40 can obtain the current or voltage curve of the compressor 201 through a current or voltage sensor, and then calculate the operating frequency F of the compressor 201 based on the current or voltage curve. Of course, determine the air conditioner 1000 The method of being in the heating mode and obtaining the operating frequency F of the compressor 201 is not limited to this, and the present disclosure does not limit this.

在空调器1000在开启运行一段时间后，空调器1000趋于稳定状态，压缩机201的运行频率F稳定。当空调器1000运行在制热模式下时，当室内环境的温度降低，或者空调器1000由静音或低风模式变为高风模式，或者空调器由睡眠或静音模式转变为制热模式时，压缩机201的运行频率F会上升，控制器40通过获取压缩机201的运行频率F，可实时获取压缩机201的运行状态。After the air conditioner 1000 is turned on and operated for a period of time, the air conditioner 1000 tends to a stable state, and the operating frequency F of the compressor 201 is stable. When the air conditioner 1000 is running in the heating mode, when the temperature of the indoor environment decreases, or the air conditioner 1000 changes from the silent or low wind mode to the high wind mode, or the air conditioner changes from the sleep or silent mode to the heating mode, The operating frequency F of the compressor 201 will increase. By obtaining the operating frequency F of the compressor 201, the controller 40 can obtain the operating status of the compressor 201 in real time.

在步骤12中，确定在预设周期G内，压缩机201的运行频率F的增加值△F大于预设频率阈值A，控制空调器1000进入假除霜模式。In step 12, it is determined that within the preset period G, the increase value ΔF of the operating frequency F of the compressor 201 is greater than the preset frequency threshold A, and the air conditioner 1000 is controlled to enter the false defrost mode.

压缩机201的运行频率F发生变化会导致空调器1000中的对应部件的运行状态发生变化。如，当压缩机201的运行频率F突然上升时，在短时间内冷媒的流量供应不足，导致蒸发器的压力下降，进而导致室外换热器202的盘管的第一温度T1突然下降。Changes in the operating frequency F of the compressor 201 will cause changes in the operating states of corresponding components in the air conditioner 1000 . For example, when the operating frequency F of the compressor 201 suddenly increases, the flow supply of the refrigerant is insufficient in a short period of time, causing the pressure of the evaporator to drop, which in turn causes the first temperature T1 of the coil of the outdoor heat exchanger 202 to drop suddenly.

例如，图6为根据一些实施例的压缩机的运行频率和第一温度对应关系的示意图。For example, FIG. 6 is a schematic diagram illustrating the corresponding relationship between the operating frequency of the compressor and the first temperature according to some embodiments.

如图6所示，线条M表示压缩机201的运行频率F随时间的变化情况。线条N表示第一温度T1随时间的第一种变化情况。线条Q表示第一温度T1随时间的第二种变化情况。As shown in FIG. 6 , the line M represents the change of the operating frequency F of the compressor 201 with time. Line N represents the first change of the first temperature T1 with time. Line Q represents the second change of the first temperature T1 with time.

如图6中的线条M所示，在第一时刻t1至第二时刻t2的过程中，压缩机201的运行频率F从第一子频率F1突然上升至第二子频率F2。在第二时刻t2后，压缩机201的运行频率F保持不变。As shown by the line M in FIG. 6 , during the period from the first time t1 to the second time t2 , the operating frequency F of the compressor 201 suddenly rises from the first sub-frequency F1 to the second sub-frequency F2 . After the second time t2, the operating frequency F of the compressor 201 remains unchanged.

如图6中的线条N所示，从第一时刻t1开始，第一温度T1从第一子温度T11下降并在第三时刻t3下降至第二子温度T12，此时第一温度T1达到最小值。在此情况下，室外环境温度(第四温度T4)与第一温度T1(如第二子温度T12)之差可能满足空调器1000进行除霜的条件。然而，第一温度T1的下降是由于压缩机201运行不稳定导致，实际上室外换热器202上可能不存在霜或者存在较少的霜。若空调器1000在除霜模式下运行，则室内环境的第三温度T3下降，影响空调器1000的制热效果。As shown by line N in Figure 6, starting from the first time t1, the first temperature T1 drops from the first sub-temperature T11 and drops to the second sub-temperature T12 at the third time t3, at which time the first temperature T1 reaches the minimum value. In this case, the difference between the outdoor ambient temperature (the fourth temperature T4) and the first temperature T1 (such as the second sub-temperature T12) may satisfy the condition for the air conditioner 1000 to perform defrosting. However, the decrease in the first temperature T1 is caused by the unstable operation of the compressor 201. In fact, there may be no frost or less frost on the outdoor heat exchanger 202. If the air conditioner 1000 operates in the defrost mode, the third temperature T3 of the indoor environment decreases, affecting the heating effect of the air conditioner 1000 .

并且，如图6中的线条N所示，在第三时刻t3后，第一温度T1上升至第三子温度T13，并保持不变。在此情况下，若室外环境温度(第四温度T4)与第一温度T1(如第三子温度T13)之差未满足空调器1000进行除霜的条件，则空调器1000需要退出除霜模式，并再次在制热模式下运行。此时，空调器1000进行除霜的时间较短，无法达到需求的除霜效果，并且还耗费能源。Moreover, as shown by the line N in FIG. 6 , after the third time t3 , the first temperature T1 rises to the third sub-temperature T13 and remains unchanged. In this case, if the difference between the outdoor ambient temperature (the fourth temperature T4) and the first temperature T1 (such as the third sub-temperature T13) does not meet the conditions for the air conditioner 1000 to defrost, the air conditioner 1000 needs to exit the defrost mode. , and run in heating mode again. At this time, the defrosting time of the air conditioner 1000 is short, the required defrosting effect cannot be achieved, and energy is also consumed.

为了解决上述问题，在本公开一些实施例中设置预设频率阈值A和预设周期G。In order to solve the above problem, a preset frequency threshold A and a preset period G are set in some embodiments of the present disclosure.

预设频率阈值A为预先设定的阈值。预设周期G为预先设定的检测压缩机201的运行频率F的时间周期。压缩机201的运行频率F的增加值△F是指压缩机201的运行频率F在预设周期G内的增加值。例如，控制器40上一次获取的压缩机201的运行频率F记为第一运行频率F(r-1)，控制器40当前获取的压缩机201的运行频率F记为第二运行频率F(r)，r≥1。在此情况下，压缩机201的运行频率F的增加值△F为第二运行频率F(r)与第一运行频率F(r-1)之差(即，△F＝F(r)-F(r-1))。若在预设周期G内压缩机201的运行频率F的增加值△F大于预设频率阈值A(即△F＞A)，则控制器40确定压缩机201的运行频率F在短时间内快速升高。这样，为了防止空调器1000误进行除霜，控制器40可以控制空调器1000进入假除霜模式，然后确定是否控制空调器1000进入除霜模式。The preset frequency threshold A is a preset threshold. The preset period G is a preset time period for detecting the operating frequency F of the compressor 201 . The increase value ΔF of the operating frequency F of the compressor 201 refers to the increased value of the operating frequency F of the compressor 201 within the preset period G. For example, the operating frequency F of the compressor 201 last obtained by the controller 40 is recorded as the first operating frequency F (r-1), and the operating frequency F of the compressor 201 currently obtained by the controller 40 is recorded as the second operating frequency F ( r), r≥1. In this case, the increase value ΔF of the operating frequency F of the compressor 201 is the difference between the second operating frequency F(r) and the first operating frequency F(r-1) (ie, ΔF=F(r)- F(r-1)). If the increase value ΔF of the operating frequency F of the compressor 201 within the preset period G is greater than the preset frequency threshold A (ie, ΔF>A), the controller 40 determines that the operating frequency F of the compressor 201 will increase rapidly in a short time. rise. In this way, in order to prevent the air conditioner 1000 from mistakenly performing defrosting, the controller 40 may control the air conditioner 1000 to enter the false defrost mode, and then determine whether to control the air conditioner 1000 to enter the defrost mode.

在一些实施例中，预设频率阈值A大于或等于3Hz。例如，预设频率阈值A为3Hz、4Hz、6Hz、8Hz或10Hz等。在空调器1000运行时，压缩机201的运行频率F可能因各种原因而发生轻微变化。若将预设频率阈值A设置为较小值，则空调器1000可能频繁地进入假除霜模式，影响空调器1000的正常运行。因此，可以将预设温差阈值B设定为大于一定值。需要说明的是，可以根据空调器1000的配置设置不同的预设频率阈值A。In some embodiments, the preset frequency threshold A is greater than or equal to 3 Hz. For example, the preset frequency threshold A is 3Hz, 4Hz, 6Hz, 8Hz or 10Hz, etc. When the air conditioner 1000 is operating, the operating frequency F of the compressor 201 may change slightly due to various reasons. If the preset frequency threshold A is set to a smaller value, the air conditioner 1000 may frequently enter the false defrost mode, affecting the normal operation of the air conditioner 1000 . Therefore, the preset temperature difference threshold B can be set to be greater than a certain value. It should be noted that different preset frequency thresholds A can be set according to the configuration of the air conditioner 1000 .

在一些实施例中，预设周期G大于或等于1s，且小于或等于1min(1s≤G≤1min)。例如，预设周期G为1s、10s、20s、30s、50s或1min等。由于压缩机201的运行频率F突然变化的持续时间较短，空调器1000处于不稳定状态的时间较短，因此，预设周期G需要设置为较小值，以及时检测压缩机201的运行频率F的变化情况。这样，通过预设周期G，在空调器1000在制热模式下运行的情况下，控制器40可以每隔一定时间获取一次压缩机201的运行频率F。需要说明的是，可以根据空调器1000的配置设置预设周期G。In some embodiments, the preset period G is greater than or equal to 1s and less than or equal to 1min (1s≤G≤1min). For example, the preset period G is 1s, 10s, 20s, 30s, 50s or 1min, etc. Since the duration of the sudden change in the operating frequency F of the compressor 201 is short, the time the air conditioner 1000 is in an unstable state is short. Therefore, the preset period G needs to be set to a smaller value to detect the operating frequency of the compressor 201 in a timely manner. changes in F. In this way, by presetting the period G, when the air conditioner 1000 is operating in the heating mode, the controller 40 can obtain The operating frequency F of the compressor 201. It should be noted that the preset period G can be set according to the configuration of the air conditioner 1000 .

需要说明的是，本公开以压缩机201的运行频率F的增加值△F大于预设频率阈值A，控制器40控制空调器1000进入假除霜模式为例进行说明。当然，在一些实施例中，当压缩机201的运行频率F的增加值△F等于预设频率阈值A时，控制器40也可以控制空调器1000进入假除霜模式，本公开对此不作限定。It should be noted that this disclosure takes as an example that the increase value ΔF of the operating frequency F of the compressor 201 is greater than the preset frequency threshold A, and the controller 40 controls the air conditioner 1000 to enter the false defrost mode. Of course, in some embodiments, when the increase value ΔF of the operating frequency F of the compressor 201 is equal to the preset frequency threshold A, the controller 40 can also control the air conditioner 1000 to enter the false defrost mode, which is not limited by the present disclosure. .

在步骤13中，在假除霜模式下，获取第一温度T1。In step 13, in the false defrost mode, the first temperature T1 is obtained.

在步骤14中，确定第(n+1)时刻的第一温度T1小于第n时刻的第一温度T1，控制空调器1000继续制热，并控制空调器1000不进行除霜。这里，n为自然数。第n时刻的第一温度T1为T1(n)，第(n+1)时刻的第一温度T1为T1(n+1)。In step 14, it is determined that the first temperature T1 at the (n+1)th time is less than the first temperature T1 at the nth time, the air conditioner 1000 is controlled to continue heating, and the air conditioner 1000 is controlled not to perform defrosting. Here, n is a natural number. The first temperature T1 at the nth time is T1(n), and the first temperature T1 at the (n+1)th time is T1(n+1).

当压缩机201的运行频率F突然升高时，空调器1000中的对应部件的运行状态发生变化。表征空调器1000运行状态波动的参数包括第一温度T1、第二温度T2、第五温度T5、压缩机201的运行频率F和室内风机102的转速S等。表1描述了室内风机102的转速S和压缩机201的运行频率F分别对第一温度T1、第二温度T2以及第五温度T5的影响程度。表1中的“★”的数量代表相关程度。也就是说，“★”数量越多，影响程度越大。需要说明的是，第五温度T5(排气温度)为压缩机201排出气态冷媒的温度。When the operating frequency F of the compressor 201 suddenly increases, the operating status of the corresponding components in the air conditioner 1000 changes. Parameters that represent fluctuations in the operating status of the air conditioner 1000 include the first temperature T1, the second temperature T2, the fifth temperature T5, the operating frequency F of the compressor 201, the rotation speed S of the indoor fan 102, and so on. Table 1 describes the degree of influence of the rotation speed S of the indoor fan 102 and the operating frequency F of the compressor 201 on the first temperature T1, the second temperature T2, and the fifth temperature T5 respectively. The number of “★” in Table 1 represents the degree of correlation. In other words, the greater the number of "★", the greater the impact. It should be noted that the fifth temperature T5 (discharge temperature) is the temperature at which the compressor 201 discharges the gaseous refrigerant.

表1室内风机的转速以及压缩机的运行频率与第一温度、第二温度以及第五温度的关系
Table 1 The relationship between the rotation speed of the indoor fan and the operating frequency of the compressor and the first temperature, the second temperature and the fifth temperature

由表1可知，压缩机201的运行频率F对第一温度T1的影响较大。因此，控制器40可以根据第一温度T1和压缩机201的运行频率F，控制空调器1000，以避免空调器1000在无霜时除霜以及频繁除霜的情况，从而提高空调器1000的运行稳定性，减少能源耗费。It can be seen from Table 1 that the operating frequency F of the compressor 201 has a great influence on the first temperature T1. Therefore, the controller 40 can control the air conditioner 1000 according to the first temperature T1 and the operating frequency F of the compressor 201 to avoid defrosting and frequent defrosting of the air conditioner 1000 when there is no frost, thereby improving the operation of the air conditioner 1000 Stability and reduced energy consumption.

由表1可知，由于压缩机201的运行频率F突然变化必然导致第一温度T1发生改变。因此，当空调器1000进入假除霜模式时，第一温度T1在一定时间内降低。例如，第(n+1)时刻的第一温度T1(n+1)小于第n时刻的第一温度T1(n)(T1(n+1)＜T1(n))。在此情况下，第四温度T4与第一温度T1之差无法反映室外换热器202的实际的结霜情况，因此，控制器40无法准确判断第一温差ΔTm1是否满足除霜条件。若控制器40以第一温度T1的下降确定空调器1000进行除霜，则控制器40的判断失误，空调器1000误进入除霜模式。需要说明的是，第一温差ΔTm1为第四温度T4与第一温度T1的差值(ΔTm1＝T4-T1)。It can be seen from Table 1 that the sudden change in the operating frequency F of the compressor 201 will inevitably cause the first temperature T1 to change. Therefore, when the air conditioner 1000 enters the false defrost mode, the first temperature T1 decreases within a certain period of time. For example, the first temperature T1(n+1) at the (n+1)th time point is smaller than the first temperature T1(n) at the nth time point (T1(n+1)<T1(n)). In this case, the difference between the fourth temperature T4 and the first temperature T1 cannot reflect the actual frosting condition of the outdoor heat exchanger 202. Therefore, the controller 40 cannot accurately determine whether the first temperature difference ΔTm1 meets the defrosting condition. If the controller 40 determines that the air conditioner 1000 is to be defrosted based on the decrease in the first temperature T1, the controller 40's judgment is incorrect and the air conditioner 1000 enters the defrost mode by mistake. It should be noted that the first temperature difference ΔTm1 is the difference between the fourth temperature T4 and the first temperature T1 (ΔTm1=T4-T1).

因此，在假除霜模式下，即使控制器40确定第一温度T1下降，控制器40也无需判断第一温度T1是否满足除霜条件。此时，控制器40控制空调器1000继续保持制热运行，而不进行除霜，从而避免空调器1000误进入除霜模式。Therefore, in the false defrost mode, even if the controller 40 determines that the first temperature T1 decreases, the controller 40 does not need to determine whether the first temperature T1 meets the defrost condition. At this time, the controller 40 controls the air conditioner 1000 to continue to maintain heating operation without performing defrosting, thereby preventing the air conditioner 1000 from mistakenly entering the defrost mode.

需要说明的是，控制器40确定空调器1000进入除霜模式的过程如下：在压缩机201运行一段时间后，控制器40通过第一温度传感器206和第四温度传感器207获取第一温度T1和第四温度T4。当控制器40确定第四温度T4小于或等于第一温度阈值，第一温度T1小于或等于第二温度阈值，以及第一温差ΔTm1大于或等于第三温度阈值时，空调器1000运行除霜模式。当控制器40检测到第一温度T1大于或等于第四温度阈值时，空调器退出除霜模式。所述第一温度阈值、所述第二温度阈值、所述第三温度阈值和所述第四温度阈值为预先设定的阈值，其可根据实际需要进行设定，本公开对此不做限制。It should be noted that the process by which the controller 40 determines that the air conditioner 1000 enters the defrost mode is as follows: after the compressor 201 runs for a period of time, the controller 40 obtains the first temperature T1 and the first temperature T1 through the first temperature sensor 206 and the fourth temperature sensor 207 The fourth temperature is T4. When the controller 40 determines that the fourth temperature T4 is less than or equal to the first temperature threshold, the first temperature T1 is less than or equal to the second temperature threshold, and the first temperature difference ΔTm1 is greater than or equal to the third temperature threshold, the air conditioner 1000 operates in the defrost mode . When the controller 40 detects that the first temperature T1 is greater than or equal to the fourth temperature threshold, the air conditioner exits the defrost mode. The first temperature threshold, the second temperature threshold, the third temperature threshold and the fourth temperature threshold are preset thresholds, which can be set according to actual needs, and this disclosure does not limit this. .

由于在假除霜模式下第一温差ΔTm1无法表示室外机20的结霜情况，因此，空调器1000在进入假除霜模式后，控制器40可以不获取第四温度T4，或者，控制器40可以直接赋值给第四温度T4一个固定值，并设定该固定值大于所述第一温度阈值。这样，控制器40可以限定空调器1000进入除霜模式的条件。在假除霜模式下，由于第四温度T4不满足空调器1000进入除霜模式的条件，因此，可以防止空调器1000误进入除霜模式。Since the first temperature difference ΔTm1 cannot represent the frosting condition of the outdoor unit 20 in the false defrost mode, after the air conditioner 1000 enters the false defrost mode, the controller 40 may not obtain the fourth temperature T4, or the controller 40 A fixed value can be directly assigned to the fourth temperature T4, and the fixed value can be set to be greater than the first temperature threshold. In this way, the controller 40 can define the conditions under which the air conditioner 1000 enters the defrost mode. In the false defrost mode, since the fourth temperature T4 does not meet the conditions for the air conditioner 1000 to enter the defrost mode, the air conditioner 1000 can be prevented from entering the defrost mode by mistake.

当空调器1000在制热模式下运行时，压缩机201的运行频率F突然发生变化，会引起空调器1000波动，进而可能满足除霜条件而使得空调器1000进入除霜模式，本公开一些实施例中提出了假除霜模式，通过引入预设频率阈值A，使得当压缩机201的运行频率 F在预设周期G内运行频率F的增加值△F超过预设频率阈值A时，控制器40控制空调器1000进入假除霜模式。也就是说，在由压缩机201的运行频率F发生变化引起第一温度T1改变的情况下，即使第一温度T1满足空调器1000进入除霜模式的条件，控制器40也不控制空调器1000进入除霜模式，这样，可以避免空调器1000在无霜时除霜以及频繁除霜的情况，从而提高空调器1000的运行稳定性，减少能源耗费。When the air conditioner 1000 is running in the heating mode, the operating frequency F of the compressor 201 suddenly changes, which will cause the air conditioner 1000 to fluctuate, and then the defrosting conditions may be met and the air conditioner 1000 enters the defrost mode. Some implementations of the present disclosure In the example, a false defrost mode is proposed, by introducing a preset frequency threshold A, so that when the operating frequency of the compressor 201 When the increase value ΔF of the operating frequency F exceeds the preset frequency threshold A within the preset period G, the controller 40 controls the air conditioner 1000 to enter the false defrost mode. That is, in the case where the first temperature T1 changes due to a change in the operating frequency F of the compressor 201, even if the first temperature T1 satisfies the condition for the air conditioner 1000 to enter the defrost mode, the controller 40 does not control the air conditioner 1000. Entering the defrost mode can avoid the air conditioner 1000 being defrosted when there is no frost and frequent defrost, thereby improving the operating stability of the air conditioner 1000 and reducing energy consumption.

在一些实施例中，在步骤14之后，控制器40还被配置为：确定第一温度T1在上升至第一目标温度后在第一预设时长H1内保持不变，且压缩机201的运行频率F增加至第一频率(目标频率)后保持不变，控制空调器1000退出假除霜模式，并控制空调器1000进入制热模式以继续制热。这里，所述第一目标温度可以大于满足空调器1000的除霜条件的第一温度T1。这样，当第一温度T1等于所述第一目标温度时，室外换热器202可能不存在霜或者存在较少的霜，在这种情况下，空调器1000无需在除霜模式下运行。In some embodiments, after step 14, the controller 40 is further configured to: determine that the first temperature T1 remains unchanged within the first preset time period H1 after rising to the first target temperature, and the operation of the compressor 201 After the frequency F increases to the first frequency (target frequency) and remains unchanged, the air conditioner 1000 is controlled to exit the false defrost mode, and the air conditioner 1000 is controlled to enter the heating mode to continue heating. Here, the first target temperature may be greater than the first temperature T1 that satisfies the defrosting condition of the air conditioner 1000 . In this way, when the first temperature T1 is equal to the first target temperature, there may be no frost or less frost in the outdoor heat exchanger 202. In this case, the air conditioner 1000 does not need to operate in the defrost mode.

在空调器1000运行不稳定的情况下，第一温度T1可能降低然后回升。例如，如图6中的线条M和N所示，从第一时刻t1开始，压缩机201的运行频率F突然上升，导致第一温度T1下降并在第三时刻t3下降至最小值。在第三时刻t3后，第一温度T1上升至第三子温度T13(如所述第一目标温度)。在此情况下，若第一温度T1保持不变的时长等于第一预设时长H1，则控制器40确定空调器1000运行稳定。并且，若在第一预设时长H1内，压缩机201的运行频率F保持不变，则控制器40控制空调器1000退出假除霜模式。In the case where the air conditioner 1000 operates unstable, the first temperature T1 may decrease and then increase. For example, as shown by lines M and N in Figure 6, starting from the first time t1, the operating frequency F of the compressor 201 suddenly increases, causing the first temperature T1 to decrease and drop to a minimum value at the third time t3. After the third time t3, the first temperature T1 rises to the third sub-temperature T13 (such as the first target temperature). In this case, if the first temperature T1 remains unchanged for a period equal to the first preset period H1, the controller 40 determines that the air conditioner 1000 is operating stably. Moreover, if the operating frequency F of the compressor 201 remains unchanged within the first preset time period H1, the controller 40 controls the air conditioner 1000 to exit the false defrost mode.

这样，控制器40根据压缩机201的运行频率F的增加值△F，确定第一温度T1的最小值。并且，在第一温度T1上升后和空调器1000运行稳定之前，控制器40控制空调器1000不进行除霜，可以避免空调器1000频繁除霜或在不存在霜的情况下除霜的现象。In this way, the controller 40 determines the minimum value of the first temperature T1 according to the increase value ΔF of the operating frequency F of the compressor 201 . Moreover, after the first temperature T1 rises and before the air conditioner 1000 operates stably, the controller 40 controls the air conditioner 1000 not to perform defrosting, which can avoid the phenomenon of the air conditioner 1000 being defrosted frequently or defrosting in the absence of frost.

在一些实施例中，第一预设时长H1可以大于或等于1min，且小于或等于5min。例如，第一预设时长H1为1min、2min、3min、4min或5min等。需要说明的是，可以根据空调器1000的配置设置第一预设时长H1。In some embodiments, the first preset time period H1 may be greater than or equal to 1 minute and less than or equal to 5 minutes. For example, the first preset time period H1 is 1 min, 2 min, 3 min, 4 min or 5 min, etc. It should be noted that the first preset time period H1 can be set according to the configuration of the air conditioner 1000 .

在一些实施例中，控制器40所执行的步骤11包括：确定空调器1000在制热模式下的运行时间达到第五预设时长H5，确定空调器1000处于制热模式。In some embodiments, step 11 performed by the controller 40 includes: determining that the operating time of the air conditioner 1000 in the heating mode reaches the fifth preset time length H5, and determining that the air conditioner 1000 is in the heating mode.

在一些实施例中，第五预设时长H5大于或等于9min，且小于等于11min。例如，第五预设时长H5为9min、10min或11min等。通常压缩机201开始运行10min后，压缩机201的运行频率F稳定，从而空调器1000整体运行平稳。若压缩机201开始运行后其运行时间小于9min，则压缩机201的运行频率F波动较大，获取的数据变化较大容易影响判断结果的准确性。若压缩机201开始运行后其运行时间大于11min，则导致等待时间过长。因此，需要压缩机201启动后的持续运行时间大于或等于9min，且小于等于11min。也就是说，第五预设时长H5大于或等于9min，且小于等于11min。In some embodiments, the fifth preset time period H5 is greater than or equal to 9 minutes and less than or equal to 11 minutes. For example, the fifth preset time period H5 is 9 minutes, 10 minutes or 11 minutes, etc. Usually, 10 minutes after the compressor 201 starts operating, the operating frequency F of the compressor 201 becomes stable, so that the overall operation of the air conditioner 1000 is stable. If the operating time of the compressor 201 is less than 9 minutes after it starts operating, the operating frequency F of the compressor 201 will fluctuate greatly, and the acquired data will change greatly and easily affect the accuracy of the judgment result. If the running time of the compressor 201 is greater than 11 minutes after it starts running, the waiting time will be too long. Therefore, the continuous operation time of the compressor 201 after starting is required to be greater than or equal to 9 minutes and less than or equal to 11 minutes. That is to say, the fifth preset time period H5 is greater than or equal to 9 minutes and less than or equal to 11 minutes.

在一些实施例中，控制器40所执行的步骤14包括：连续第一预设次数地确定第(n+1)时刻的第一温度T1小于第n时刻的第一温度T1，控制空调器1000继续制热，并控制空调器1000不进行除霜。In some embodiments, step 14 performed by the controller 40 includes: determining for a first preset number of times that the first temperature T1 at the (n+1)th moment is less than the first temperature T1 at the nth moment, and controlling the air conditioner 1000 Heating is continued, and the air conditioner 1000 is controlled not to perform defrosting.

这里，所述第一预设次数大于或等于2。例如，所述第一预设次数等于2次、3次或4次等。由于检测次数较少可能会存在检测错误的情况，因此，通过对第一温度T1进行多次重复检测与判断，可以提高控制器40判断第一温度T1随时间变化趋势的准确性。Here, the first preset number of times is greater than or equal to 2. For example, the first preset number of times is equal to 2 times, 3 times or 4 times, etc. Since detection errors may occur if the number of detections is small, by repeatedly detecting and determining the first temperature T1 multiple times, the accuracy of the controller 40 in determining the change trend of the first temperature T1 over time can be improved.

在一些实施例中，在步骤14后，控制器40还被配置：确定第一温度T1在上升至第二目标温度之后在第二预设时长H2内保持不变，之后又降低至第三目标温度，以及压缩机201的运行频率F在增加至第一频率(目标频率)后保持不变，控制空调器1000进行除霜。In some embodiments, after step 14, the controller 40 is further configured to: determine that the first temperature T1 remains unchanged within the second preset time period H2 after rising to the second target temperature, and then decreases to the third target. The temperature and the operating frequency F of the compressor 201 remain unchanged after increasing to the first frequency (target frequency), and the air conditioner 1000 is controlled to perform defrosting.

这里，所述第三目标温度为满足空调器1000的除霜条件的第一温度T1。所述第二目标温度和第二预设时长H2可根据需要进行设定，本公开对此不作限定。Here, the third target temperature is the first temperature T1 that satisfies the defrosting condition of the air conditioner 1000 . The second target temperature and the second preset time period H2 can be set as needed, and this disclosure does not limit this.

在空调器1000运行不稳定的情况下，第一温度T1可能降低然后回升。例如，如图6中的线条Q所示，从第一时刻t1开始，压缩机201的运行频率F突然上升，导致第一温度T1下降并在第三时刻t3下降至最小值。在第三时刻t3后，第一温度T1上升，并在第四时刻t4达到第四子温度T23(如所述第二目标温度)，且在短时间(如第二预设时长 H2)内保持不变。In the case where the air conditioner 1000 operates unstable, the first temperature T1 may decrease and then increase. For example, as shown by line Q in FIG. 6 , starting from the first time t1 , the operating frequency F of the compressor 201 suddenly increases, causing the first temperature T1 to drop and drop to a minimum value at the third time t3 . After the third time t3, the first temperature T1 rises and reaches the fourth sub-temperature T23 (such as the second target temperature) at the fourth time t4, and in a short time (such as the second preset time period) H2) remains unchanged.

在此情况下，当压缩机201的运行频率F保持不变，且在一定时间后空调器1000运行稳定时，若第一温度T1下降至一定温度，且下降后的第一温度T1满足空调器1000运行除霜模式的条件。例如，在第六时刻t6，第一温度T1下降至第五子温度T24(如所述第三目标温度)，且该第五子温度T24满足空调器1000进入除霜模式的条件，则控制器40确定室外机20结霜，需要对其进行除霜。在此情况下，控制器40控制空调器1000退出假除霜模式，并取消对第四温度T4的限定(如，控制器40控制第四温度传感器207获取第四温度T4，或者控制器40取消对第四温度T4的赋值)，以使空调器1000可以进入除霜模式。因此，在压缩机201的运行频率F变化引起的第一温度T1波动的情况下，控制器40通过执行上述步骤可以避免空调器1000频繁除霜或在不存在霜的情况下除霜的现象。并且，当室外机20结霜时，控制器40所执行的步骤并不会影响空调器1000的除霜。In this case, when the operating frequency F of the compressor 201 remains unchanged and the air conditioner 1000 operates stably after a certain period of time, if the first temperature T1 drops to a certain temperature, and the dropped first temperature T1 meets the requirements of the air conditioner 1000 conditions for running defrost mode. For example, at the sixth time t6, the first temperature T1 drops to the fifth sub-temperature T24 (such as the third target temperature), and the fifth sub-temperature T24 meets the conditions for the air conditioner 1000 to enter the defrost mode, then the controller 40 It is determined that the outdoor unit 20 is frosted and needs to be defrosted. In this case, the controller 40 controls the air conditioner 1000 to exit the false defrost mode and cancels the limitation on the fourth temperature T4 (for example, the controller 40 controls the fourth temperature sensor 207 to obtain the fourth temperature T4, or the controller 40 cancels Assignment to the fourth temperature T4), so that the air conditioner 1000 can enter the defrost mode. Therefore, in the case where the first temperature T1 fluctuates due to changes in the operating frequency F of the compressor 201, the controller 40 can avoid the phenomenon of frequent defrosting of the air conditioner 1000 or defrosting in the absence of frost by performing the above steps. Moreover, when the outdoor unit 20 is frosted, the steps performed by the controller 40 will not affect the defrosting of the air conditioner 1000 .

需要说明的是，空调器1000在假除霜模式下的制热与空调器1000在制热模式下的制热类似。只是空调器1000在假除霜模式下进行制热时，室外环境温度(第四温度T4)是被限制的，控制器40无法确定空调器1000进行除霜。而空调器1000在制热模式下进行制热时，室外环境温度未被限制，且控制器40可以判断是否控制空调器1000进行除霜。It should be noted that the heating of the air conditioner 1000 in the false defrost mode is similar to the heating of the air conditioner 1000 in the heating mode. However, when the air conditioner 1000 performs heating in the false defrost mode, the outdoor ambient temperature (the fourth temperature T4) is limited, and the controller 40 cannot determine that the air conditioner 1000 performs defrost. When the air conditioner 1000 performs heating in the heating mode, the outdoor ambient temperature is not limited, and the controller 40 can determine whether to control the air conditioner 1000 to perform defrosting.

本公开一些实施例还提供了一种空调器的除霜控制方法，该方法应用于控制器上。所述空调器与上述空调器1000的结构类似。例如，所述空调器包括上述室内机10和上述室外机20。室外机20包括压缩机201。Some embodiments of the present disclosure also provide a defrost control method for an air conditioner, which method is applied to a controller. The air conditioner has a similar structure to the air conditioner 1000 described above. For example, the air conditioner includes the above-mentioned indoor unit 10 and the above-mentioned outdoor unit 20 . The outdoor unit 20 includes a compressor 201.

在此情况下，如图5所示，该方法包括步骤21至步骤24。In this case, as shown in Figure 5, the method includes steps 21 to 24.

在步骤21中，在空调器1000处于制热模式下，获取压缩机201的运行频率F。In step 21, when the air conditioner 1000 is in the heating mode, the operating frequency F of the compressor 201 is obtained.

在步骤22中，确定在预设周期G内，压缩机201的运行频率F的增加值△F大于预设频率阈值A，控制空调器1000进入假除霜模式。In step 22, it is determined that within the preset period G, the increase value ΔF of the operating frequency F of the compressor 201 is greater than the preset frequency threshold A, and the air conditioner 1000 is controlled to enter the false defrost mode.

在步骤23中，在假除霜模式下，获取第一温度T1。In step 23, in the false defrost mode, the first temperature T1 is obtained.

在步骤24中，确定第(n+1)时刻的第一温度T1小于第n时刻的第一温度T1，控制空调器1000继续制热，并控制空调器1000不进行除霜。这里，n为自然数。In step 24, it is determined that the first temperature T1 at the (n+1)th time is less than the first temperature T1 at the nth time, the air conditioner 1000 is controlled to continue heating, and the air conditioner 1000 is controlled not to perform defrosting. Here, n is a natural number.

在一些实施例中，在步骤24后，该方法还包括：确定第一温度T1在上升至第一目标温度后在第一预设时长H1内保持不变，且压缩机201的运行频率F增加至第一频率(目标频率)后保持不变，控制空调器1000退出假除霜模式，并控制空调器1000进入制热模式以继续制热。In some embodiments, after step 24, the method further includes: determining that the first temperature T1 remains unchanged within a first preset time period H1 after rising to the first target temperature, and the operating frequency F of the compressor 201 increases. After reaching the first frequency (target frequency) and remaining unchanged, the air conditioner 1000 is controlled to exit the false defrost mode, and the air conditioner 1000 is controlled to enter the heating mode to continue heating.

在一些实施例中，步骤21包括：确定空调器1000在制热模式下的运行时间达到第五预设时长H5，确定空调器1000处于制热模式。In some embodiments, step 21 includes: determining that the operating time of the air conditioner 1000 in the heating mode reaches the fifth preset time length H5, and determining that the air conditioner 1000 is in the heating mode.

在一些实施例中，步骤24包括：连续第一预设次数地确定第(n+1)时刻的第一温度T1小于第n时刻的第一温度T1，控制空调器1000继续制热，并控制空调器1000不进行除霜。In some embodiments, step 24 includes: determining for a first preset number of times that the first temperature T1 at the (n+1)th moment is less than the first temperature T1 at the nth moment, controlling the air conditioner 1000 to continue heating, and controlling The air conditioner 1000 does not defrost.

在一些实施例中，在步骤24后，该方法还包括：确定第一温度T1在上升至第二目标温度后在第二预设时长H2内保持不变，之后又降低至第三目标温度，以及压缩机201的运行频率F在增加至第一频率(目标频率)后保持不变，控制空调器1000进入除霜模式。In some embodiments, after step 24, the method further includes: determining that the first temperature T1 remains unchanged within the second preset time period H2 after rising to the second target temperature, and then decreases to the third target temperature, And the operating frequency F of the compressor 201 remains unchanged after increasing to the first frequency (target frequency), and the air conditioner 1000 is controlled to enter the defrost mode.

需要说明的是，本公开一些实施例提供的空调器的除霜控制方法，与上述实施例提供的空调器中的控制器40所执行的所有流程步骤相同，两者的工作原理和有益效果相对应，因而在此不再赘述。It should be noted that the defrosting control method for an air conditioner provided by some embodiments of the present disclosure is the same as all the process steps executed by the controller 40 in the air conditioner provided by the above embodiments, and the working principles and beneficial effects of the two are similar. corresponding, so they will not be described again here.

图7为根据一些实施例的空调器的除霜控制方法的一种流程图。Figure 7 is a flow chart of a defrost control method of an air conditioner according to some embodiments.

在一些实施例中，如图7所示，在步骤21后(在空调器1000处于制热模式下，获取压缩机201的运行频率F后)，该方法还包括步骤211或步骤212中的至少一个。In some embodiments, as shown in Figure 7, after step 21 (after the air conditioner 1000 is in the heating mode and the operating frequency F of the compressor 201 is obtained), the method further includes at least step 211 or step 212. one.

在步骤211中，确定第三温度T3降低，且第二温差△Tm2(室内温差)变大。In step 211, it is determined that the third temperature T3 decreases and the second temperature difference ΔTm2 (indoor temperature difference) becomes larger.

第二温差△Tm2为设定温度与第三温度T3之差。所述设定温度为根据用户对室内环境温度的需求而预先设定的温度。用户可以通过遥控器30或者移动终端上的空调应用程序(Application，APP)或者控制面板设定所述设定温度。The second temperature difference ΔTm2 is the difference between the set temperature and the third temperature T3. The set temperature is a temperature preset according to the user's demand for indoor ambient temperature. The user can set the set temperature through the remote control 30 or the air conditioning application (Application, APP) on the mobile terminal or the control panel.

当空调器1000在制热模式下运行一段时间后，第三温度T3逐渐上升，第二温差△Tm2 变小。第二温差△Tm2越小，第三温度T3越接近所述设定温度。也就是说，室内环境温度接近用户设定的温度。在此情况下，空调器的压缩机201的运行频率由高频降至低频。在第三温度T3等于所述设定温度时，空调器1000的压缩机201保持在中频或低频下运行。When the air conditioner 1000 operates in the heating mode for a period of time, the third temperature T3 gradually rises, and the second temperature difference ΔTm2 become smaller. The smaller the second temperature difference ΔTm2 is, the closer the third temperature T3 is to the set temperature. That is to say, the indoor ambient temperature is close to the temperature set by the user. In this case, the operating frequency of the compressor 201 of the air conditioner is reduced from high frequency to low frequency. When the third temperature T3 is equal to the set temperature, the compressor 201 of the air conditioner 1000 keeps operating at a medium frequency or a low frequency.

在压缩机201在中频或低频下运行的过程中，频繁地开关门或者人员出入室内可能导致第三温度T3降低，使第二温差△Tm2变大，从而压缩机201再次升频运行。当压缩机201的运行频率F突然升高时，第一温度T1快速降低，且低于压缩机201高频运行时的第一温度T1。在这种情况下，室外机20上可能并不存在霜或者存在较少的霜，若控制器40根据第一温差△Tm1判断空调器1000是否进行除霜，则空调器1000可能误进入除霜模式导致第三温度T3降低，影响空调器1000的制热效果。While the compressor 201 is operating at medium or low frequency, frequent opening and closing of doors or people entering and exiting the room may cause the third temperature T3 to decrease, causing the second temperature difference ΔTm2 to increase, causing the compressor 201 to increase frequency again. When the operating frequency F of the compressor 201 suddenly increases, the first temperature T1 decreases rapidly and is lower than the first temperature T1 when the compressor 201 operates at high frequency. In this case, there may be no frost or less frost on the outdoor unit 20. If the controller 40 determines whether the air conditioner 1000 performs defrosting based on the first temperature difference ΔTm1, the air conditioner 1000 may mistakenly enter defrost. mode causes the third temperature T3 to decrease, affecting the heating effect of the air conditioner 1000.

在步骤212中，确定室内风机102的转速S增大。In step 212, it is determined that the rotation speed S of the indoor fan 102 increases.

在空调器1000进行制热，且空调器1000为静音或者睡眠模式的情况下，压缩机201在低频下运行，且室内风机102以低转速运行。若空调器1000在该模式下运行一段时间后，第三温度T3仍然小于所述设定温度，则控制器40控制空调器1000进入制热模式。在这种情况下，室内风机102的转速S升高，压缩机201的运行频率F也快速升高。When the air conditioner 1000 performs heating and the air conditioner 1000 is in silent or sleep mode, the compressor 201 operates at a low frequency, and the indoor fan 102 operates at a low rotational speed. If the third temperature T3 is still less than the set temperature after the air conditioner 1000 has been running in this mode for a period of time, the controller 40 controls the air conditioner 1000 to enter the heating mode. In this case, the rotation speed S of the indoor fan 102 increases, and the operating frequency F of the compressor 201 also increases rapidly.

或者，当空调器1000以高风或强力风模式运行一段时间后，第二温度T2(室内换热器101的盘管的温度)上升，空调器1000的功率增大。在此情况下，电流保护或者对室内换热器101的盘管的过载保护可能触发，以使压缩机201的运行频率F降低，从而空调器1000在低风模式下运行且压缩机201保持低频运行。这样，在空调器1000运行一段时间后，若调整室内风机102的转速S为高转速，压缩机201的运行频率F会快速升高。Or, when the air conditioner 1000 operates in the high wind or strong wind mode for a period of time, the second temperature T2 (the temperature of the coil of the indoor heat exchanger 101) rises, and the power of the air conditioner 1000 increases. In this case, the current protection or the overload protection of the coil of the indoor heat exchanger 101 may be triggered, so that the operating frequency F of the compressor 201 is reduced, so that the air conditioner 1000 operates in the low wind mode and the compressor 201 maintains a low frequency. run. In this way, after the air conditioner 1000 has been running for a period of time, if the rotational speed S of the indoor fan 102 is adjusted to a high rotational speed, the operating frequency F of the compressor 201 will increase rapidly.

需要说明的是，室内风机102的电机可以为PG电机，PG电机为一具有霍尔元件的电机，其具有转速反馈电路以反馈室内风机102的转速S。控制器40可以通过该转速反馈电路获取室内风机102的转速S。当然，控制器40可以通过其他方式获取室内风机102的转速S，本公开对此不作限制。It should be noted that the motor of the indoor fan 102 may be a PG motor. The PG motor is a motor with a Hall element and a rotational speed feedback circuit to feed back the rotational speed S of the indoor fan 102 . The controller 40 can obtain the rotation speed S of the indoor fan 102 through the rotation speed feedback circuit. Of course, the controller 40 can obtain the rotation speed S of the indoor fan 102 through other methods, and this disclosure does not limit this.

图8为根据一些实施例的空调器的除霜控制方法的另一种流程图。图9为根据一些实施例的空调器的除霜控制方法的又一种流程图。Figure 8 is another flowchart of a defrost control method of an air conditioner according to some embodiments. Figure 9 is yet another flowchart of a defrost control method of an air conditioner according to some embodiments.

以下参考图8和图9对空调器的除霜控制方法做示例性说明。The defrost control method of the air conditioner will be exemplified below with reference to FIGS. 8 and 9 .

在一些实施例中，如图8所示，该方法包括步骤31至步骤34。In some embodiments, as shown in Figure 8, the method includes steps 31 to 34.

在步骤31中，确定空调器1000处于制热模式。In step 31, it is determined that the air conditioner 1000 is in the heating mode.

在步骤32中，确定压缩机的运行时间达到第五预设时长H5，并获取压缩机201的运行频率F。这里，第五预设时长H5可以等于10min。In step 32, it is determined that the operating time of the compressor reaches the fifth preset time length H5, and the operating frequency F of the compressor 201 is obtained. Here, the fifth preset time period H5 may be equal to 10 minutes.

在步骤33中，判断压缩机201的运行频率F是否升高，且在预设周期G内，压缩机201的运行频率F的增加值△F是否大于预设频率阈值A。若是，控制器40执行步骤34；若否，控制器40返回执行步骤31，保持制热模式。In step 33, it is determined whether the operating frequency F of the compressor 201 increases, and whether the increase value ΔF of the operating frequency F of the compressor 201 is greater than the preset frequency threshold A within the preset period G. If yes, the controller 40 executes step 34; if not, the controller 40 returns to step 31 and maintains the heating mode.

在步骤34中，控制空调器1000进入假除霜模式。In step 34, the air conditioner 1000 is controlled to enter the false defrost mode.

在步骤34后，如图9所示，该方法还包括步骤35至步骤41。After step 34, as shown in Figure 9, the method also includes steps 35 to 41.

在步骤35中，判断是否连续两次以上第(n+1)时刻的第一温度T1小于第n时刻的第一温度T1，若是，则执行步骤36；若否，则执行步骤40。In step 35, it is determined whether the first temperature T1 at the (n+1)th time is less than the first temperature T1 at the nth time for more than two consecutive times. If yes, step 36 is executed; if not, step 40 is executed.

在步骤36中，连续获取第一温度T1，并判断第一温度T1在第一预设时长H1内是否保持不变，若是，则执行步骤37，若否，则执行步骤39。In step 36, the first temperature T1 is continuously obtained, and it is determined whether the first temperature T1 remains unchanged within the first preset time period H1. If yes, step 37 is executed. If not, step 39 is executed.

在步骤37中，控制空调器1000继续进行制热，退出假除霜模式。In step 37, the air conditioner 1000 is controlled to continue heating and exit the false defrost mode.

在步骤38中，控制空调器1000进入制热模式。In step 38, the air conditioner 1000 is controlled to enter the heating mode.

在步骤39中，控制空调器1000保持制热运行。In step 39, the air conditioner 1000 is controlled to maintain heating operation.

在步骤40中，控制空调器1000保持制热运行。In step 40, the air conditioner 1000 is controlled to maintain heating operation.

在步骤41中，判断是否连续三次第(n+1)时刻的第一温度T1小于第n时刻的第一温度T1，若是，则执行步骤36；若否，则执行步骤37。In step 41, it is determined whether the first temperature T1 at the (n+1)th time for three consecutive times is less than the first temperature T1 at the nth time. If yes, step 36 is executed; if not, step 37 is executed.

另外，当控制器40执行步骤39时，控制器40实时获取第一温度T1，并再次判断是否连续两次以上第(n+1)时刻的第一温度T1小于第n时刻的第一温度T1。也就是说，在控制器40控制空调器1000保持制热运行的过程中，控制器40会重复执行步骤35至步骤41，从而实现控制器40对空调器1000运行状态的循环监测，以避免空调器1000在无霜时除霜以及频繁除霜的情况。In addition, when the controller 40 executes step 39, the controller 40 obtains the first temperature T1 in real time, and again determines whether the first temperature T1 at the (n+1)th time is less than the first temperature T1 at the nth time for more than two consecutive times. . That is to say, while the controller 40 controls the air conditioner 1000 to maintain the heating operation, the controller 40 will repeatedly execute steps 35 to 35. Step 41, thereby realizing the controller 40's cyclic monitoring of the operating status of the air conditioner 1000 to avoid defrosting of the air conditioner 1000 when there is no frost or frequent defrosting.

前文主要以控制器40根据第一温度T1和压缩机201的运行频率F控制空调器1000退出假除霜模式为例进行说明。当然，在一些实施例中，控制器40也可以通过其他参数控制空调器1000退出假除霜模式。The foregoing description mainly takes the controller 40 controlling the air conditioner 1000 to exit the false defrost mode according to the first temperature T1 and the operating frequency F of the compressor 201 as an example. Of course, in some embodiments, the controller 40 may also control the air conditioner 1000 to exit the false defrost mode through other parameters.

本公开一些实施例还提供了一种空调器。该空调器与上述空调器1000的结构相同。该空调器包括上述室内机10、上述室外机20以及上述控制器40。室外机20包括压缩机201。控制器40被配置为控制所述空调器中的各个部件工作，以实现所述空调器的各个预定功能。Some embodiments of the present disclosure also provide an air conditioner. This air conditioner has the same structure as the air conditioner 1000 described above. This air conditioner includes the above-mentioned indoor unit 10, the above-mentioned outdoor unit 20, and the above-mentioned controller 40. The outdoor unit 20 includes a compressor 201. The controller 40 is configured to control the operation of various components in the air conditioner to implement various predetermined functions of the air conditioner.

图10为根据另一些实施例的空调器中的控制器的一种流程图。如图10所示，控制器40被配置为执行步骤51至步骤55。Figure 10 is a flow chart of a controller in an air conditioner according to other embodiments. As shown in FIG. 10 , the controller 40 is configured to perform steps 51 to 55 .

在步骤51中，在空调器1000处于制热模式下，获取压缩机201的运行频率F。In step 51, when the air conditioner 1000 is in the heating mode, the operating frequency F of the compressor 201 is obtained.

在步骤52中，确定在预设周期G内，压缩机201的运行频率F的增加值△F大于预设频率阈值A，控制空调器1000进入假除霜模式。In step 52, it is determined that within the preset period G, the increase value ΔF of the operating frequency F of the compressor 201 is greater than the preset frequency threshold A, and the air conditioner 1000 is controlled to enter the false defrost mode.

需要说明的是，预设周期G以及预设频率阈值A可参见前文的相关描述，此处不再赘述。并且，控制器40所执行步骤51以及步骤52与前文控制器40所执行的步骤11以及步骤12相同，两者的工作原理和有益效果相对应，因而在此不再赘述。It should be noted that the preset period G and the preset frequency threshold A can be found in the previous relevant descriptions and will not be described again here. Furthermore, steps 51 and 52 performed by the controller 40 are the same as steps 11 and 12 performed by the controller 40. The working principles and beneficial effects of the two correspond to each other, so they will not be described again here.

在步骤53中，在假除霜模式下，获取第一温度T1、第二温度T2和室内风机102的转速S。In step 53, in the false defrost mode, the first temperature T1, the second temperature T2 and the rotation speed S of the indoor fan 102 are obtained.

需要说明的是，第一温度T1以及第二温度T2可参见前文的相关描述，此处不再赘述。It should be noted that, for the first temperature T1 and the second temperature T2, please refer to the relevant descriptions above and will not be described again here.

在步骤54中，确定第(n+1)时刻的第一温度T1小于第n时刻的第一温度T1，控制空调器1000继续制热，并控制空调器1000不进行除霜。In step 54, it is determined that the first temperature T1 at the (n+1)th time is less than the first temperature T1 at the nth time, the air conditioner 1000 is controlled to continue heating, and the air conditioner 1000 is controlled not to perform defrosting.

需要说明的是，控制器40所执行步骤54与前文控制器40所执行的步骤14相同，两者的工作原理和有益效果相对应，因而在此不再赘述。It should be noted that step 54 performed by the controller 40 is the same as step 14 performed by the controller 40. The working principles and beneficial effects of the two correspond to each other, so they will not be described again here.

例如，如图6中的线条N所示，从第一时刻t1开始，压缩机201的运行频率F突然上升，第一温度T1开始下降，从而将第一时刻t1记为空调器1000进入假除霜模式的时刻。For example, as shown by line N in FIG. 6 , starting from the first time t1 , the operating frequency F of the compressor 201 suddenly rises, and the first temperature T1 begins to decrease. Therefore, the first time t1 is recorded as the air conditioner 1000 entering the false division state. Frost mode moment.

由表1可知，压缩机201的运行频率F对第一温度T1和第二温度T2的影响较大，且室内风机102的转速S对第二温度T2的影响也较大。因此，控制器40可以根据室内风机102的转速S、第二温度T2、第一温度T1和压缩机201的运行频率F，控制空调器1000运行，以避免空调器1000在无霜时除霜以及频繁除霜的现象，从而提高空调器1000的运行稳定性，减少能源耗费。It can be seen from Table 1 that the operating frequency F of the compressor 201 has a great influence on the first temperature T1 and the second temperature T2, and the rotation speed S of the indoor fan 102 also has a great impact on the second temperature T2. Therefore, the controller 40 can control the operation of the air conditioner 1000 according to the rotation speed S of the indoor fan 102, the second temperature T2, the first temperature T1 and the operating frequency F of the compressor 201 to avoid defrosting of the air conditioner 1000 when there is no frost and Frequent defrosting phenomenon, thereby improving the operational stability of the air conditioner 1000 and reducing energy consumption.

由表1可知，由于压缩机201的运行频率F突然变化必然导致第一温度T1和第二温度T2发生改变。因此，当空调器1000进入假除霜模式时，第一温度T1在一定时间内降低。例如，第(n+1)时刻的第一温度T1(n+1)小于第n时刻的第一温度T1(n)(T1(n+1)＜T1(n))。并且，在第一温度T1快速降低的情况下，第二温度T2可能也会发生波动，如，第二温度T2升高或保持不变。在此情况下，第一温差ΔTm1无法反映室外换热器202的实际的结霜情况，因此，控制器40无法准确判断是否满足除霜条件。若控制器40以该第一温度T1的下降确定空调器1000进行除霜，则控制器40的判断失误，空调器1000误进入除霜模式。因此，在假除霜模式下，即使控制器40确定第一温度T1下降，控制器40也无需判断第一温度T1是否满足除霜条件。此时，控制器40控制空调器1000继续保持制热运行，而不进行除霜，从而避免空调器1000误进入除霜模式。对于控制器40控制空调器1000不进行除霜的方法可参见前文的相关描述，此处不再赘述。It can be seen from Table 1 that the sudden change in the operating frequency F of the compressor 201 will inevitably cause the first temperature T1 and the second temperature T2 to change. Therefore, when the air conditioner 1000 enters the false defrost mode, the first temperature T1 decreases within a certain period of time. For example, the first temperature T1(n+1) at the (n+1)th time point is smaller than the first temperature T1(n) at the nth time point (T1(n+1)<T1(n)). Moreover, when the first temperature T1 decreases rapidly, the second temperature T2 may also fluctuate, for example, the second temperature T2 increases or remains unchanged. In this case, the first temperature difference ΔTm1 cannot reflect the actual frosting condition of the outdoor heat exchanger 202. Therefore, the controller 40 cannot accurately determine whether the defrosting condition is met. If the controller 40 determines that the air conditioner 1000 is to be defrosted based on the decrease in the first temperature T1, the controller 40's judgment is incorrect and the air conditioner 1000 enters the defrost mode by mistake. Therefore, in the false defrost mode, even if the controller 40 determines that the first temperature T1 decreases, the controller 40 does not need to determine whether the first temperature T1 meets the defrost condition. At this time, the controller 40 controls the air conditioner 1000 to continue to maintain heating operation without performing defrosting, thereby preventing the air conditioner 1000 from mistakenly entering the defrost mode. For the method for the controller 40 to control the air conditioner 1000 not to perform defrosting, please refer to the relevant descriptions above and will not be described again here.

在步骤55中，确定第一温度T1、第二温度T2和室内风机102的转速S在第三预设时长H3内保持不变，控制空调器1000退出假除霜模式。In step 55, it is determined that the first temperature T1, the second temperature T2 and the rotation speed S of the indoor fan 102 remain unchanged within the third preset time period H3, and the air conditioner 1000 is controlled to exit the false defrost mode.

第三预设时长H3大于或等于1min，且小于或等于5min。例如，第三预设时长H3为1min、2min、3min、4min或5min等。需要说明的是，可以根据空调器1000的配置设置第三预设时长H3。The third preset time period H3 is greater than or equal to 1 minute and less than or equal to 5 minutes. For example, the third preset time period H3 is 1 min, 2 min, 3 min, 4 min or 5 min, etc. It should be noted that the third preset time period H3 can be set according to the configuration of the air conditioner 1000 .

例如，如图6中的线条Q所示，在第四时刻t4之后，第一温度T1在第三预设时长 H3内保持不变，从而第一温度T1在下降后上升且趋于稳定。并且，在第一温度T1在第三预设时长H3内保持不变的情况下，第二温度T2和室内风机102的转速S也保持不变。在这种情况下，空调器1000的运行趋于稳定，控制器40可以控制空调器1000退出假除霜模式，进入制热模式。否则，空调器1000未达到稳定状态，控制器40继续周期性获取第一温度T1、第二温度T2和室内风机102的转速S，确定第一温度T1的最小值，并在第一温度T1上升后且第一温度T1稳定之前，控制器40控制空调器1000不进行除霜，以避免空调器1000在无霜时除霜以及频繁除霜的现象，从而提高空调器1000的运行稳定性，减少能源耗费。For example, as shown by line Q in Figure 6, after the fourth time t4, the first temperature T1 is at the third preset time period. H3 remains unchanged, so that the first temperature T1 rises and becomes stable after falling. Moreover, when the first temperature T1 remains unchanged within the third preset time period H3, the second temperature T2 and the rotation speed S of the indoor fan 102 also remain unchanged. In this case, the operation of the air conditioner 1000 tends to be stable, and the controller 40 can control the air conditioner 1000 to exit the false defrost mode and enter the heating mode. Otherwise, the air conditioner 1000 has not reached a stable state, and the controller 40 continues to periodically obtain the first temperature T1, the second temperature T2 and the rotation speed S of the indoor fan 102, determine the minimum value of the first temperature T1, and increase the temperature when the first temperature T1 Afterwards and before the first temperature T1 stabilizes, the controller 40 controls the air conditioner 1000 not to perform defrosting, so as to avoid defrosting the air conditioner 1000 when there is no frost and frequent defrosting, thereby improving the operating stability of the air conditioner 1000 and reducing Energy consumption.

在本公开一些实施例提供的空调器1000中，对于由压缩机201的运行频率F变化引起第一温度T1和第二温度T2改变的情况，可以通过控制器40控制空调器1000进入假除霜模式，以避免空调器1000频繁除霜或在不存在霜的情况下除霜的现象，从而提高空调器1000的运行稳定性。另外，在控制器40确定空调器1000出现波动并趋于稳定后，控制器40及时控制空调器1000退出假除霜模式，并运行制热模式，可以减少能源耗费。In the air conditioner 1000 provided by some embodiments of the present disclosure, when the first temperature T1 and the second temperature T2 are changed due to changes in the operating frequency F of the compressor 201, the air conditioner 1000 can be controlled by the controller 40 to enter false defrost. mode to avoid frequent defrosting of the air conditioner 1000 or defrosting in the absence of frost, thereby improving the operating stability of the air conditioner 1000. In addition, after the controller 40 determines that the air conditioner 1000 fluctuates and becomes stable, the controller 40 promptly controls the air conditioner 1000 to exit the false defrost mode and run the heating mode, which can reduce energy consumption.

在一些实施例中，控制器40所执行的步骤54包括：连续第一预设次数地确定第(n+1)时刻的第一温度T1小于第n时刻的第一温度T1，控制空调器1000继续制热，并控制空调器1000不进行除霜。In some embodiments, step 54 performed by the controller 40 includes: determining for a first preset number of times that the first temperature T1 at the (n+1)th moment is less than the first temperature T1 at the nth moment, and controlling the air conditioner 1000 Heating is continued, and the air conditioner 1000 is controlled not to perform defrosting.

需要说明的是，第一预设次数可参见前文的相关描述，此处不再赘述。另外，控制器40所执行步骤54包括的内容与前文控制器40所执行的步骤14包括的内容相同，两者的工作原理和有益效果相对应，因而在此不再赘述。It should be noted that the first preset number of times can be found in the previous relevant descriptions and will not be described again here. In addition, the content included in step 54 executed by the controller 40 is the same as the content included in the foregoing step 14 executed by the controller 40. The working principles and beneficial effects of the two correspond to each other, so they will not be described again here.

在一些实施例中，在步骤54后，控制器40还被配置为：确定第一温度T1在上升至第二目标温度后在第二预设时长H2内保持不变，之后又降低至第三目标温度，且压缩机201的运行频率F在增加至第一频率(目标频率)后保持不变，控制空调器1000进入除霜模式。In some embodiments, after step 54, the controller 40 is further configured to: determine that the first temperature T1 remains unchanged within the second preset time period H2 after rising to the second target temperature, and then decreases to a third The target temperature is reached, and the operating frequency F of the compressor 201 remains unchanged after increasing to the first frequency (target frequency), and the air conditioner 1000 is controlled to enter the defrost mode.

需要说明的是，控制器40根据第一温度T1和压缩机201的运行频率F确定空调器1000是否进入除霜模式的方法与前文控制器40在步骤14后根据第一温度T1和压缩机201的运行频率F确定空调器1000是否进入除霜模式的方法相同，两者的工作原理和有益效果相对应，因而在此不再赘述。It should be noted that the method in which the controller 40 determines whether the air conditioner 1000 enters the defrost mode based on the first temperature T1 and the operating frequency F of the compressor 201 is the same as the method used by the controller 40 based on the first temperature T1 and the operating frequency F of the compressor 201 after step 14. The method of determining whether the air conditioner 1000 enters the defrost mode is the same as the operating frequency F. The working principles and beneficial effects of the two are corresponding, so they will not be described again here.

在一些实施例中，控制器40所执行的步骤51包括：确定空调器1000在制热模式下的运行时间达到第五预设时长H5，确定空调器1000处于制热模式下。In some embodiments, step 51 performed by the controller 40 includes: determining that the operating time of the air conditioner 1000 in the heating mode reaches the fifth preset time length H5, and determining that the air conditioner 1000 is in the heating mode.

需要说明的是，控制器40确定空调器1000是否处于制热模式的方法与前文描述的控制器40确定空调器1000是否处于制热模式的方法相同，两者的工作原理和有益效果相对应，因而在此不再赘述。It should be noted that the method for the controller 40 to determine whether the air conditioner 1000 is in the heating mode is the same as the method for the controller 40 to determine whether the air conditioner 1000 is in the heating mode described above. The working principles and beneficial effects of the two correspond to each other. Therefore, no further details will be given here.

如图10所示，该方法包括步骤61至步骤65。As shown in Figure 10, the method includes steps 61 to 65.

在步骤61中，在空调器1000处于制热模式下，获取压缩机201的运行频率F。In step 61, when the air conditioner 1000 is in the heating mode, the operating frequency F of the compressor 201 is obtained.

在步骤62中，确定在预设周期G内，压缩机201的运行频率F的增加值△F大于预设频率阈值A，控制空调器1000进入假除霜模式。In step 62, it is determined that within the preset period G, the increase value ΔF of the operating frequency F of the compressor 201 is greater than the preset frequency threshold A, and the air conditioner 1000 is controlled to enter the false defrost mode.

在步骤63中，在假除霜模式下，获取第一温度T1、第二温度T2和室内风机102的转速S。In step 63, in the false defrost mode, the first temperature T1, the second temperature T2 and the rotation speed S of the indoor fan 102 are obtained.

在步骤64中，确定第(n+1)时刻的第一温度T1小于第n时刻的第一温度T1，控制空调器1000继续制热，并控制空调器1000不进行除霜。这里，n为自然数。第n时刻的第一温度T1为T1(n)，第(n+1)时刻的第一温度T1为T1(n+1)。In step 64, it is determined that the first temperature T1 at the (n+1)th time is less than the first temperature T1 at the nth time, the air conditioner 1000 is controlled to continue heating, and the air conditioner 1000 is controlled not to perform defrosting. Here, n is a natural number. The first temperature T1 at the nth time is T1(n), and the first temperature T1 at the (n+1)th time is T1(n+1).

在步骤65中，确定第一温度T1、第二温度T2和室内风机102的转速S在第三预设时长H3内保持不变，控制空调器1000退出假除霜模式。In step 65, it is determined that the first temperature T1, the second temperature T2 and the rotation speed S of the indoor fan 102 remain unchanged within the third preset time period H3, and the air conditioner 1000 is controlled to exit the false defrost mode.

在一些实施例中，步骤64包括：连续第一预设次数地确定第(n+1)时刻的第一温度T1小于第n时刻的第一温度T1，控制空调器1000继续制热，并控制空调器1000不进行除霜。In some embodiments, step 64 includes: determining for a first preset number of times that the first temperature T1 at the (n+1)th moment is less than the first temperature T1 at the nth moment, controlling the air conditioner 1000 to continue heating, and controlling Air conditioner 1000 does not work Defrost.

在一些实施例中，在步骤64后，该方法还包括：确定第一温度T1在上升至第二目标温度后在第二预设时长H2内保持不变，之后又降低至第三目标温度，且压缩机201的运行频率F在增加至第一频率(目标频率)后保持不变，控制空调器1000进入除霜模式。In some embodiments, after step 64, the method further includes: determining that the first temperature T1 remains unchanged within the second preset time period H2 after rising to the second target temperature, and then decreases to the third target temperature, And the operating frequency F of the compressor 201 remains unchanged after increasing to the first frequency (target frequency), and the air conditioner 1000 is controlled to enter the defrost mode.

在一些实施例中，步骤61包括：确定空调器1000在制热模式下的运行时间达到第五预设时长H5，确定空调器1000处于制热模式。在确定空调器1000处于制热模式后，控制器40获取压缩机201的运行频率F。In some embodiments, step 61 includes: determining that the operating time of the air conditioner 1000 in the heating mode reaches the fifth preset time length H5, and determining that the air conditioner 1000 is in the heating mode. After determining that the air conditioner 1000 is in the heating mode, the controller 40 obtains the operating frequency F of the compressor 201.

在一些实施例中，如图7所示，在步骤61后，该方法还包括步骤611或步骤612中的至少一个。In some embodiments, as shown in Figure 7, after step 61, the method further includes at least one of step 611 or step 612.

在步骤611中，确定第三温度T3降低，且第二温差△Tm2(室内温差)变大。In step 611, it is determined that the third temperature T3 decreases and the second temperature difference ΔTm2 (indoor temperature difference) becomes larger.

在步骤612中，确定室内风机102的转速S增大。In step 612, it is determined that the rotation speed S of the indoor fan 102 increases.

需要说明的是，控制器40所执行步骤611与前文控制器40所执行的步骤211相同，控制器40所执行步骤612与前文控制器40所执行的步骤212相同，两者的工作原理和有益效果相对应，因而在此不再赘述。It should be noted that the step 611 performed by the controller 40 is the same as the step 211 performed by the controller 40, and the step 612 performed by the controller 40 is the same as the step 212 performed by the controller 40. The working principles and benefits of the two are the same. The effects are corresponding, so they will not be described again here.

图11为根据另一些实施例的空调器的除霜控制方法的一种流程图。以下参考图8和图11对空调器的除霜控制方法做示例性说明。Figure 11 is a flow chart of a defrost control method of an air conditioner according to other embodiments. The defrost control method of the air conditioner will be exemplified below with reference to FIGS. 8 and 11 .

在一些实施例中，如图8所示，该方法包括步骤71至步骤74。In some embodiments, as shown in Figure 8, the method includes steps 71 to 74.

在步骤71中，确定空调器1000处于制热模式。In step 71, it is determined that the air conditioner 1000 is in the heating mode.

在步骤72中，确定压缩机201的运行时间达到第五预设时长H5，并获取压缩机201的运行频率F。这里，第五预设时长H5可以等于10min。In step 72, it is determined that the operating time of the compressor 201 reaches the fifth preset time length H5, and the operating frequency F of the compressor 201 is obtained. Here, the fifth preset time period H5 may be equal to 10 minutes.

在步骤73中，判断压缩机201的运行频率F是否升高，且在预设周期G内，压缩机201的运行频率F的增加值△F是否大于预设频率阈值A。若是，控制器40执行步骤74；若否，控制器40返回执行步骤71，保持制热模式。In step 73, it is determined whether the operating frequency F of the compressor 201 increases, and whether the increase value ΔF of the operating frequency F of the compressor 201 is greater than the preset frequency threshold A within the preset period G. If yes, the controller 40 executes step 74; if not, the controller 40 returns to step 71 and maintains the heating mode.

在步骤74中，控制空调器1000进入假除霜模式。In step 74, the air conditioner 1000 is controlled to enter the false defrost mode.

在步骤74后，如图11所示，该方法还包括步骤75至步骤80。After step 74, as shown in Figure 11, the method further includes steps 75 to 80.

在步骤75中，判断是否连续两次以上第(n+1)时刻的第一温度T1小于第n时刻的第一温度T1，若是，则执行步骤76；若否，则执行步骤79。In step 75, it is determined whether the first temperature T1 at the (n+1)th time is less than the first temperature T1 at the nth time for more than two consecutive times. If yes, step 76 is executed; if not, step 79 is executed.

在步骤76中，获取第一温度T1、第二温度T2和室内风机102的转速S，并判断第一温度T1、第二温度T2和室内风机102的转速S是否在第三预设时长H3内保持不变，若是，则执行步骤77；若否，则返回执行步骤76。如，第三预设时长H3为5min。In step 76, the first temperature T1, the second temperature T2 and the rotation speed S of the indoor fan 102 are obtained, and it is determined whether the first temperature T1, the second temperature T2 and the rotation speed S of the indoor fan 102 are within the third preset time period H3. Remain unchanged, if yes, proceed to step 77; if not, return to step 76. For example, the third preset time period H3 is 5 minutes.

在步骤77中，控制空调器1000退出假除霜模式。In step 77, the air conditioner 1000 is controlled to exit the false defrost mode.

在步骤78中，控制空调器1000进入制热模式。In step 78, the air conditioner 1000 is controlled to enter the heating mode.

在步骤79中，控制空调器1000保持制热运行。In step 79, the air conditioner 1000 is controlled to maintain heating operation.

在步骤80中，判断是否连续三次第(n+1)时刻的第一温度T1小于第n时刻的第一温度T1，若是，则执行步骤76；若否，则执行步骤77。In step 80, it is determined whether the first temperature T1 at the (n+1)th time for three consecutive times is smaller than the first temperature T1 at the nth time. If yes, step 76 is executed; if not, step 77 is executed.

前文主要以控制器40根据压缩机201的运行频率F控制空调器1000进入假除霜模式为例进行说明。当然，在一些实施例中，控制器40也可以通过其他参数控制空调器1000进入假除霜模式。The foregoing description mainly takes the controller 40 controlling the air conditioner 1000 to enter the false defrost mode according to the operating frequency F of the compressor 201 as an example. Of course, in some embodiments, the controller 40 may also control the air conditioner 1000 to enter the false defrost mode through other parameters.

图12为根据又一些实施例的空调器中的控制器的一种流程图。如图12所示，控制器40被配置为执行步骤91至步骤95。FIG. 12 is a flow chart of a controller in an air conditioner according to still other embodiments. As shown in FIG. 12 , the controller 40 is configured to perform steps 91 to 95 .

在步骤91中，在空调器1000处于制热模式下，获取设定温度和第三温度T3，以确定第二温差△Tm2(室内温差)。In step 91, when the air conditioner 1000 is in the heating mode, the set temperature and the third temperature T3 are obtained to determine The second temperature difference ΔTm2 (indoor temperature difference).

所述设定温度、第三温度T3以及第二温差△Tm2可参见前文的相关描述，此处不再赘述。The set temperature, the third temperature T3 and the second temperature difference ΔTm2 can be found in the relevant descriptions above and will not be described again here.

在步骤92中，确定在预设周期G内第二温差△Tm2的增加值大于或等于预设温差阈值B，控制空调器1000进入假除霜模式。In step 92, it is determined that the increase value of the second temperature difference ΔTm2 within the preset period G is greater than or equal to the preset temperature difference threshold B, and the air conditioner 1000 is controlled to enter the false defrost mode.

例如，在第三温度T3无法满足用户需求的情况下，需要升高所述设定温度以升高第三温度T3。然而，在所述设定温度升高，且第三温度T3未升高的情况下，第二温差△Tm2变大。在这种情况下，控制器40控制压缩机201的运行频率增大，以提高空调器1000的制热能力。For example, when the third temperature T3 cannot meet the user's needs, the set temperature needs to be increased to increase the third temperature T3. However, when the set temperature increases and the third temperature T3 does not increase, the second temperature difference ΔTm2 becomes larger. In this case, the controller 40 controls the operating frequency of the compressor 201 to increase to increase the heating capacity of the air conditioner 1000 .

又例如，当空调器1000在制热模式下运行一段时间后，随着第二温差△Tm2变小，压缩机201由高频运行调整至低频运行。当第三温度T3与所述设定温度相同时，空调器1000保持低频运行。在这种情况下，若频繁开窗、开门或者人员进出室内，第三温度T3降低，使得第二温差△Tm2变大。当控制器40确定第二温差△Tm2增大时，控制器40会控制压缩机201的运行频率F增大。这样，第二温差△Tm2增大必然使空调器1000中的部件增加做功。因此，可以以第二温差△Tm2的增大表示需求热量的增加。For another example, when the air conditioner 1000 operates in the heating mode for a period of time, as the second temperature difference ΔTm2 becomes smaller, the compressor 201 adjusts from high-frequency operation to low-frequency operation. When the third temperature T3 is the same as the set temperature, the air conditioner 1000 maintains low-frequency operation. In this case, if windows and doors are opened frequently or people enter and exit the room, the third temperature T3 decreases, causing the second temperature difference ΔTm2 to become larger. When the controller 40 determines that the second temperature difference ΔTm2 increases, the controller 40 controls the operating frequency F of the compressor 201 to increase. In this way, an increase in the second temperature difference ΔTm2 will inevitably increase the work of the components in the air conditioner 1000 . Therefore, the increase in the second temperature difference ΔTm2 can represent an increase in heat demand.

第二温差△Tm2的增大会导致压缩机201的运行频率F的增大，空调器1000短暂出现波动，在短时间内冷媒的流量供应不足，导致蒸发器(如室外换热器202)的压力下降，从而第一温度T1下降，且第一温度T1低于压缩机201高频稳定运行时对应的第一温度T1。在这种情况下，若控制器40按照第一温差ΔTm1和压缩机201的运行时间进行除霜判断，则控制器40可能确定空调器1000满足进入除霜模式的除霜条件，从而控制空调器1000进行除霜。然而，实际上室外换热器202上可能不存在霜或者存在较少的霜。因此若空调器1000在除霜模式下运行，会导致第三温度T3降低，影响空调器1000的制热效果。需要说明的是，第一温度T1可参见前文的相关描述，此处不再赘述。The increase in the second temperature difference ΔTm2 will cause the operating frequency F of the compressor 201 to increase, and the air conditioner 1000 will temporarily fluctuate. In a short period of time, the flow supply of the refrigerant will be insufficient, resulting in the pressure of the evaporator (such as the outdoor heat exchanger 202). decreases, so that the first temperature T1 decreases, and the first temperature T1 is lower than the corresponding first temperature T1 when the compressor 201 operates stably at high frequency. In this case, if the controller 40 makes a defrosting judgment based on the first temperature difference ΔTm1 and the operating time of the compressor 201, the controller 40 may determine that the air conditioner 1000 meets the defrosting conditions to enter the defrost mode, thereby controlling the air conditioner. 1000 for defrosting. However, there may actually be no frost or less frost on the outdoor heat exchanger 202 . Therefore, if the air conditioner 1000 is operated in the defrost mode, the third temperature T3 will be reduced, affecting the heating effect of the air conditioner 1000. It should be noted that, for the first temperature T1, please refer to the previous relevant descriptions and will not be described again here.

又例如，在空调器1000由静音或者睡眠模式转变为低频或低风制热模式，且空调器1000在该模式(低频或低风制热模式)下运行一段时间后，第三温度T3仍然小于所述设定温度，则控制器40控制空调器1000进入高风制热模式。或者，在空调器1000以高风或者强力风模式运行一段时间后，第三温度T3与所述设定温度相同，且空调器1000转变为低风模式运行，室内换热器101的换热能力降低，第二温度T2会升高。在此情况下，电流保护或者室内盘管过载保护可能触发，以使压缩机201降低运行频率F，从而空调器1000在低风模式下运行且压缩机201保持低频运行。这样，在空调器1000运行一段时间后，若调整室内风机102的转速S为高转速，压缩机201的运行频率F会快速升高，第一温度T1会快速降低，使得第一温差ΔTm1满足除霜条件，控制器40控制空调器1000进入除霜模式，导致第三温度T3降低，影响空调器1000的制热效果。For another example, after the air conditioner 1000 changes from the silent or sleep mode to the low frequency or low wind heating mode, and the air conditioner 1000 runs in this mode (low frequency or low wind heating mode) for a period of time, the third temperature T3 is still less than When the temperature is set, the controller 40 controls the air conditioner 1000 to enter the high-wind heating mode. Or, after the air conditioner 1000 has been running in the high wind or strong wind mode for a period of time, the third temperature T3 is the same as the set temperature, and the air conditioner 1000 is switched to the low wind mode. The heat exchange capacity of the indoor heat exchanger 101 decreases, the second temperature T2 will increase. In this case, the current protection or the indoor coil overload protection may be triggered, so that the compressor 201 reduces the operating frequency F, so that the air conditioner 1000 operates in the low wind mode and the compressor 201 maintains low-frequency operation. In this way, after the air conditioner 1000 has been running for a period of time, if the rotational speed S of the indoor fan 102 is adjusted to a high rotational speed, the operating frequency F of the compressor 201 will increase rapidly, and the first temperature T1 will decrease rapidly, so that the first temperature difference ΔTm1 satisfies the requirements except In frost conditions, the controller 40 controls the air conditioner 1000 to enter the defrost mode, causing the third temperature T3 to decrease, affecting the heating effect of the air conditioner 1000.

如图6中的线条N所示，从第一时刻t1开始，第一温度T1从第一子温度T11下降并在第三时刻t3下降至第二子温度T12，此时第一温度T1达到最小值。在此情况下，第四温度T4与第一温度T1(如第二子温度T12)之差可能满足空调器1000进行除霜的条件。然而，第一温度T1的下降是由于压缩机201运行不稳定导致，实际上室外换热器202上可能不存在霜或者存在较少的霜。若空调器1000在除霜模式下运行，则第三温度T3下降，影响空调器1000的制热效果。As shown by line N in Figure 6, starting from the first time t1, the first temperature T1 drops from the first sub-temperature T11 and drops to the second sub-temperature T12 at the third time t3, at which time the first temperature T1 reaches the minimum value. In this case, the difference between the fourth temperature T4 and the first temperature T1 (eg, the second sub-temperature T12 ) may satisfy the condition for the air conditioner 1000 to perform defrosting. However, the decrease in the first temperature T1 is caused by the unstable operation of the compressor 201. In fact, there may be no frost or less frost on the outdoor heat exchanger 202. If the air conditioner 1000 operates in the defrost mode, the third temperature T3 decreases, affecting the heating effect of the air conditioner 1000 .

并且，如图6中的线条N所示，在第三时刻t3后，第一温度T1上升至第三子温度T13，并保持不变。在此情况下，若第四温度T4与第一温度T1(如第三子温度T13)之差未满足空调器1000进行除霜的条件，则空调器1000需要退出除霜模式，并再次在制热模式下运行。此时，空调器1000进行除霜的时间较短，无法达到需求的除霜效果，耗费能源。Moreover, as shown by the line N in FIG. 6 , after the third time t3 , the first temperature T1 rises to the third sub-temperature T13 and remains unchanged. In this case, if the difference between the fourth temperature T4 and the first temperature T1 (such as the third sub-temperature T13) does not meet the conditions for the air conditioner 1000 to defrost, the air conditioner 1000 needs to exit the defrost mode and start the defrosting mode again. Run in hot mode. At this time, the defrosting time of the air conditioner 1000 is short, and the required defrosting effect cannot be achieved, which consumes energy.

为了解决上述问题，在本公开一些实施例中设置预设温差阈值B和预设周期G。In order to solve the above problem, a preset temperature difference threshold B and a preset period G are set in some embodiments of the present disclosure.

预设温差阈值B为预先设定的阈值。预设周期G与前文相关描述中的预设周期G类似，此处不再赘述。需要说明的是，预设周期G作为第二温差△Tm2的检测周期。The preset temperature difference threshold B is a preset threshold. The preset period G is similar to the preset period G in the previous relevant description, and will not be described again here. It should be noted that the preset period G is used as the detection period of the second temperature difference ΔTm2.

第二温差△Tm2的增加值是指第二温差△Tm2在预设周期G内的增加值。例如，将控制器40上一次获取的第二温差△Tm2记为第一室内温差△Tm2(p-1)，将控制器40 当前获取的第二温差△Tm2记为第二室内温差△Tm2(p)，p≥1。在此情况下，第二温差△Tm2的增加值为第二室内温差△Tm2(p)与第一室内温差△Tm2(p-1)之差。若在预设周期G内第二温差△Tm2的增加值大于预设温差阈值B，则控制器40确定第二温差△Tm2在短时间内快速升高，压缩机201的运行频率F也在短时间内升高。这样，为了防止空调器1000误进行除霜，控制器40可以控制空调器1000进入假除霜模式，然后确定是否控制空调器1000进入除霜模式。这样，可以避免空调器1000在无霜时除霜以及频繁除霜的现象，从而提高空调器1000的运行稳定性，减少能源耗费。The increased value of the second temperature difference ΔTm2 refers to the increased value of the second temperature difference ΔTm2 within the preset period G. For example, the second temperature difference ΔTm2 obtained last time by the controller 40 is recorded as the first indoor temperature difference ΔTm2 (p-1), and the controller 40 The currently obtained second temperature difference ΔTm2 is recorded as the second indoor temperature difference ΔTm2(p), p≥1. In this case, the increase value of the second temperature difference ΔTm2 is the difference between the second indoor temperature difference ΔTm2(p) and the first indoor temperature difference ΔTm2(p-1). If the increase value of the second temperature difference ΔTm2 within the preset period G is greater than the preset temperature difference threshold B, the controller 40 determines that the second temperature difference ΔTm2 increases rapidly in a short period of time, and the operating frequency F of the compressor 201 also increases in a short period of time. rise within time. In this way, in order to prevent the air conditioner 1000 from mistakenly performing defrosting, the controller 40 may control the air conditioner 1000 to enter the false defrost mode, and then determine whether to control the air conditioner 1000 to enter the defrost mode. In this way, defrosting of the air conditioner 1000 when there is no frost and frequent defrosting can be avoided, thereby improving the operating stability of the air conditioner 1000 and reducing energy consumption.

在一些实施例中，预设温差阈值B大于或等于1℃，例如，预设温差阈值B为1℃、2℃、3℃、或4℃等。在空调器1000运行时，第二温差△Tm2可能因各种原因而发生轻微变化。若将预设温差阈值B设置为较小值，则空调器1000可能频繁地进入假除霜模式，影响空调器1000的正常运行。因此，可以将预设温差阈值B设定为大于一定值。可以根据空调器1000的配置预设不同的预设温差阈值B。In some embodiments, the preset temperature difference threshold B is greater than or equal to 1°C. For example, the preset temperature difference threshold B is 1°C, 2°C, 3°C, or 4°C, etc. When the air conditioner 1000 is operating, the second temperature difference ΔTm2 may change slightly due to various reasons. If the preset temperature difference threshold B is set to a smaller value, the air conditioner 1000 may frequently enter the false defrost mode, affecting the normal operation of the air conditioner 1000 . Therefore, the preset temperature difference threshold B can be set to be greater than a certain value. Different preset temperature difference thresholds B may be preset according to the configuration of the air conditioner 1000 .

在步骤93中，在假除霜模式下，获取第一温度T1。In step 93, in the false defrost mode, the first temperature T1 is obtained.

在步骤94中，确定第(n+1)时刻的第一温度T1小于第n时刻的第一温度T1，控制空调器1000继续制热，并控制空调器1000不进行除霜。这里，n为自然数。第n时刻的第一温度T1为T1(n)，第(n+1)时刻的第一温度T1为T1(n+1)。In step 94, it is determined that the first temperature T1 at the (n+1)th time is less than the first temperature T1 at the nth time, the air conditioner 1000 is controlled to continue heating, and the air conditioner 1000 is controlled not to perform defrosting. Here, n is a natural number. The first temperature T1 at the nth time is T1(n), and the first temperature T1 at the (n+1)th time is T1(n+1).

由表1可知，当第二温差△Tm2变化时，压缩机201的运行频率F也会发生改变，从而第一温度T1改变。因此，当空调器100进入假除霜模式时，第一温度T1在一定时间内降低。也就是说，第(n+1)时刻的第一温度T1(n+1)小于第n时刻的第一温度T1(n)(T1(n+1)＜T1(n))。例如，如图6中的线条N所示，从第一时刻t1开始，压缩机201的运行频率F突然上升，第一温度T1开始下降，从而将第一时刻t1记为空调器1000进入假除霜模式的时刻。It can be seen from Table 1 that when the second temperature difference ΔTm2 changes, the operating frequency F of the compressor 201 will also change, so that the first temperature T1 changes. Therefore, when the air conditioner 100 enters the false defrost mode, the first temperature T1 decreases within a certain period of time. That is to say, the first temperature T1(n+1) at the (n+1)th time is smaller than the first temperature T1(n) at the nth time (T1(n+1)<T1(n)). For example, as shown by line N in FIG. 6 , starting from the first time t1 , the operating frequency F of the compressor 201 suddenly rises, and the first temperature T1 begins to decrease. Therefore, the first time t1 is recorded as the air conditioner 1000 entering the false division state. Frost mode moment.

由表1可知，当压缩机201的运行频率F提高时，第一温度T1快速下降。在此情况下，第一温差ΔTm1无法反映室外换热器202的实际的结霜情况，因此，控制器40无法准确判断第一温差ΔTm1是否满足除霜条件。若控制器40以第一温度T1的下降确定空调器1000进行除霜，则控制器40的判断失误，空调器1000误进入除霜模式。It can be seen from Table 1 that when the operating frequency F of the compressor 201 increases, the first temperature T1 decreases rapidly. In this case, the first temperature difference ΔTm1 cannot reflect the actual frosting condition of the outdoor heat exchanger 202. Therefore, the controller 40 cannot accurately determine whether the first temperature difference ΔTm1 meets the defrosting condition. If the controller 40 determines that the air conditioner 1000 is to be defrosted based on the decrease in the first temperature T1, the controller 40's judgment is incorrect and the air conditioner 1000 enters the defrost mode by mistake.

对于控制器40确定空调器1000进行除霜模式的过程和控制器40限定第四温度T4的方法可参见前文的相关描述，此处不再赘述。For the process of the controller 40 determining that the air conditioner 1000 is in the defrost mode and the method of the controller 40 defining the fourth temperature T4, please refer to the relevant descriptions above, and will not be described again here.

在步骤95中，在空调器1000在假除霜模式下运行时间达到第四预设时长H4之前，确定第一温度T1、第二温度T2和室内风机102的转速S在第三预设时长H3内保持不变，控制空调器1000退出假除霜模式。所述第三预设时长H3小于或等于第四预设时长H4。In step 95, before the operating time of the air conditioner 1000 in the false defrost mode reaches the fourth preset time period H4, it is determined that the first temperature T1, the second temperature T2 and the rotation speed S of the indoor fan 102 are within the third preset time period H3. The temperature remains unchanged, and the air conditioner 1000 is controlled to exit the false defrost mode. The third preset time length H3 is less than or equal to the fourth preset time length H4.

对于第三预设时长H3可参见前文的相关描述，此处不再赘述。For the third preset duration H3, please refer to the relevant descriptions mentioned above and will not be described again here.

在一些实施例中，第四预设时长H4大于或等于5min。例如，第四预设时长H4为5min、5.5min或6min等。In some embodiments, the fourth preset time period H4 is greater than or equal to 5 minutes. For example, the fourth preset time period H4 is 5 minutes, 5.5 minutes or 6 minutes, etc.

当压缩机201的运行频率F达到最高频率时，即使第二温差△Tm2增大，压缩机201的运行频率F也不发生改变。在此情况下，若第一温度T1因室外换热器202上有霜而下降，则第一温度T1不会先下降后上升。这样，第一温度T1无法在第三预设时长H3内保持不变。若第一温度T1因压缩机201的运行频率F升高而下降，则在短时间内第一温度T1下降然后上升并保持不变。因此，通过设定第四预设时长H4，可以在第四预设时长H4内确定第一温度T1下降后的变化情况。这样，当控制器40确定第二温度T2和第一温度T1在第三预设时长H3内保持不变时，第二温度T2和第一温度T1分别趋于稳定，从而空调器1000的运行稳定。在此情况下，若控制器40确定室内风机102的转速S也在第三预设时长H3内保持不变，则控制器40可以控制空调器1000退出假除霜模式，并在制热模式下运行，以进行除霜模式的判断。此时，控制器40对第四温度T4的限定已在退出假除霜模式后取消。 When the operating frequency F of the compressor 201 reaches the highest frequency, even if the second temperature difference ΔTm2 increases, the operating frequency F of the compressor 201 does not change. In this case, if the first temperature T1 drops due to frost on the outdoor heat exchanger 202, the first temperature T1 will not first drop and then rise. In this way, the first temperature T1 cannot remain unchanged within the third preset time period H3. If the first temperature T1 decreases due to an increase in the operating frequency F of the compressor 201, the first temperature T1 decreases in a short period of time and then increases and remains unchanged. Therefore, by setting the fourth preset time period H4, the change of the first temperature T1 after it drops can be determined within the fourth preset time period H4. In this way, when the controller 40 determines that the second temperature T2 and the first temperature T1 remain unchanged within the third preset time period H3, the second temperature T2 and the first temperature T1 tend to be stable respectively, so that the operation of the air conditioner 1000 is stable. . In this case, if the controller 40 determines that the rotation speed S of the indoor fan 102 also remains unchanged within the third preset time period H3, the controller 40 can control the air conditioner 1000 to exit the false defrost mode and operate in the heating mode. Run to judge the defrost mode. At this time, the limit of the fourth temperature T4 by the controller 40 has been canceled after exiting the false defrost mode.

例如，如图6中的线条Q所示，在第七时刻t7后，第一温度T1趋于稳定，或者，如图6中的线条N所示，在第六时刻t6后，第一温度T1趋于稳定，控制器40控制空调器1000退出假除霜模式。For example, as shown by the line Q in Figure 6, after the seventh time t7, the first temperature T1 tends to be stable, or, as shown by the line N in Figure 6, after the sixth time t6, the first temperature T1 When it becomes stable, the controller 40 controls the air conditioner 1000 to exit the false defrost mode.

在本公开一些实施例提供的空调器1000中，控制器40根据第二温差△Tm2的变化趋势控制空调器1000进入假除霜模式，可以避免空调器1000频繁除霜或在不存在霜的情况下除霜的现象。In the air conditioner 1000 provided by some embodiments of the present disclosure, the controller 40 controls the air conditioner 1000 to enter the false defrost mode according to the changing trend of the second temperature difference ΔTm2, which can avoid frequent defrosting of the air conditioner 1000 or in the absence of frost. defrost phenomenon.

在一些实施例中，控制器40所执行的步骤94包括：连续第一预设次数地确定第(n+1)时刻的第一温度T1小于第n时刻的第一温度T1，控制空调器1000继续制热，并控制空调器1000不进行除霜。In some embodiments, step 94 performed by the controller 40 includes: determining for a first preset number of times that the first temperature T1 at the (n+1)th moment is less than the first temperature T1 at the nth moment, and controlling the air conditioner 1000 Heating is continued, and the air conditioner 1000 is controlled not to perform defrosting.

需要说明的是，第一预设次数可参见前文的相关描述，此处不再赘述。另外，控制器40所执行步骤94包括的内容与前文控制器40所执行的步骤14包括的内容相同，两者的工作原理和有益效果相对应，因而在此不再赘述。It should be noted that the first preset number of times can be found in the previous relevant descriptions and will not be described again here. In addition, the content included in step 94 executed by the controller 40 is the same as the content included in the foregoing step 14 executed by the controller 40. The working principles and beneficial effects of the two correspond to each other, so they will not be described again here.

在一些实施例中，控制器40所执行的步骤91包括：确定空调器1000在制热模式下的运行时间达到第五预设时长H5，确定空调器1000处于制热模式。In some embodiments, step 91 performed by the controller 40 includes: determining that the operating time of the air conditioner 1000 in the heating mode reaches the fifth preset time length H5, and determining that the air conditioner 1000 is in the heating mode.

在一些实施例中，第五预设时长H5大于或等于20min。例如，第五预设时长H5为20min、21min或22min等。In some embodiments, the fifth preset time period H5 is greater than or equal to 20 minutes. For example, the fifth preset time period H5 is 20min, 21min or 22min, etc.

通常压缩机201开始运行20min后，压缩机201的运行频率F稳定，从而空调器1000整体运行平稳。若压缩机201开始运行后其运行时间小于20min，则压缩机201的运行频率F波动较大，获取的数据变化较大容易影响判断结果的准确性。因此，需要压缩机201启动后的持续运行时间大于或等于20min。也就是说，第五预设时长H5大于或等于20min。Usually, 20 minutes after the compressor 201 starts operating, the operating frequency F of the compressor 201 becomes stable, so that the overall operation of the air conditioner 1000 is stable. If the operating time of the compressor 201 is less than 20 minutes after it starts operating, the operating frequency F of the compressor 201 will fluctuate greatly, and the acquired data will change greatly and easily affect the accuracy of the judgment results. Therefore, the continuous running time of the compressor 201 after starting is required to be greater than or equal to 20 minutes. That is to say, the fifth preset time period H5 is greater than or equal to 20 minutes.

图13为根据又一些实施例的空调器中的控制器的另一种流程图。当然，本公开一些实施例对于假除霜模式的进入条件并不局限于第二温差△Tm2。在一些实施例中，如图13所示，控制器40所执行的步骤91和步骤92可被替换为步骤91'和步骤92'。FIG. 13 is another flowchart of a controller in an air conditioner according to further embodiments. Of course, in some embodiments of the present disclosure, the conditions for entering the false defrost mode are not limited to the second temperature difference ΔTm2. In some embodiments, as shown in FIG. 13 , steps 91 and 92 performed by the controller 40 may be replaced by steps 91 ′ and 92 ′.

在步骤91'中，在空调器1000处于制热模式下，获取室内风机102的转速S。In step 91', when the air conditioner 1000 is in the heating mode, the rotation speed S of the indoor fan 102 is obtained.

在步骤92'中，确定在预设周期G内室内风机102的转速S的增加值△S大于或等于预设转速值C，控制空调器1000进入假除霜模式。In step 92', it is determined that the increase value ΔS of the rotation speed S of the indoor fan 102 within the preset period G is greater than or equal to the preset rotation speed value C, and the air conditioner 1000 is controlled to enter the false defrost mode.

当室内风机102的转速S发生变化时，空调器1000发生波动。例如，当用户要求空调器1000提高制热效果时，可以通过增大室内风机102的转速S以满足制热需求。例如，当空调器1000提高室内机10的出风量，或者空调器1000由睡眠或者静音模式转变为制热模式时，室内风机102的转速S增大。由表1可知，室内风机102的转速S对第一温度T1的影响较大。因此，根据室内风机102的转速S，控制空调器1000，可以避免空调器1000在无霜时除霜以及频繁除霜的情况，提高空调器1000的运行稳定性，减小能源耗费。When the rotation speed S of the indoor fan 102 changes, the air conditioner 1000 fluctuates. For example, when the user requires the air conditioner 1000 to improve the heating effect, the rotation speed S of the indoor fan 102 can be increased to meet the heating demand. For example, when the air conditioner 1000 increases the air output volume of the indoor unit 10, or when the air conditioner 1000 transitions from the sleep or silent mode to the heating mode, the rotation speed S of the indoor fan 102 increases. It can be seen from Table 1 that the rotation speed S of the indoor fan 102 has a great influence on the first temperature T1. Therefore, controlling the air conditioner 1000 according to the rotation speed S of the indoor fan 102 can avoid defrosting of the air conditioner 1000 when there is no frost and frequent defrost, improve the operating stability of the air conditioner 1000, and reduce energy consumption.

因此，在本公开一些实施例中设置预设转速值C和预设周期G。Therefore, the preset rotation speed value C and the preset period G are set in some embodiments of the present disclosure.

预设转速值C为预先设定的阈值。预设周期G与前文相关描述中的预设周期G类似，此处不再赘述。需要说明的是，这里的预设周期G作为室内风机102的转速S的检测周期。The preset rotation speed value C is a preset threshold. The preset period G is similar to the preset period G in the previous relevant description, and will not be described again here. It should be noted that the preset period G here serves as the detection period of the rotation speed S of the indoor fan 102 .

室内风机102的转速S的增加值△S指室内风机102的转速S在预设周期G内的增加值。当空调器1000在正常运行时，室内风机102的转速S可能由于各种原因发生波动。例如，将上一次控制器40获取的室内风机102的转速S记为第一转速S(q-1)，将当前控制器40获取的室内风机102的转速S记为第二转速S(q)，且q≥1。在此情况下，室内风机102的转速S的增加值△S为第二转速S(n)与第一转速S(n-1)之差(即，△S＝S(n)-S(n-1))。若在预设周期G内确定室内风机102的转速S的增加值△S大于或等于预设转速值C，则控制器40确定室内风机102的转速S在短时间内快速升高，导致空调器1000发生波动。这样，为了防止空调器1000误进行除霜，控制器40可以控制空调器1000进入假除霜模式，然后确定是否控制空调器1000进入除霜模式。这样，可以避免空调器1000在无霜时除霜以及频繁除霜的情况，提高空调器1000的运行稳定性，减少能耗。The increase value ΔS of the rotation speed S of the indoor fan 102 refers to the increase value of the rotation speed S of the indoor fan 102 within the preset period G. When the air conditioner 1000 is operating normally, the rotation speed S of the indoor fan 102 may fluctuate due to various reasons. For example, the rotation speed S of the indoor fan 102 obtained by the controller 40 last time is recorded as the first rotation speed S (q-1), and the rotation speed S of the indoor fan 102 obtained by the controller 40 currently is recorded as the second rotation speed S (q). , and q≥1. In this case, the increase value ΔS of the rotation speed S of the indoor fan 102 is the difference between the second rotation speed S(n) and the first rotation speed S(n-1) (ie, ΔS=S(n)-S(n) -1)). If it is determined that the increase value ΔS of the rotation speed S of the indoor fan 102 is greater than or equal to the preset rotation speed value C within the preset period G, the controller 40 determines that the rotation speed S of the indoor fan 102 increases rapidly in a short period of time, causing the air conditioner to 1000 fluctuates. In this way, in order to prevent the air conditioner 1000 from mistakenly performing defrosting, the controller 40 may control the air conditioner 1000 to enter the false defrost mode, and then determine whether to control the air conditioner 1000 to enter the defrost mode. In this way, defrosting of the air conditioner 1000 when there is no frost or frequent defrosting can be avoided, the operation stability of the air conditioner 1000 can be improved, and energy consumption can be reduced.

在一些实施例中，预设转速值C大于或等于50r/min。例如，预设转速值C为50r/min、60r/min或70r/min。若将预设转速值C设置为较小值，则空调器1000可能频繁进入假除霜模式，影响空调器1000的正常运行。因此，可以将预设转速值C设定为大于一定值。需要说明的是，预设转速值C为根据实验预设的转速值。In some embodiments, the preset rotation speed value C is greater than or equal to 50 r/min. For example, the preset rotation speed value C is 50r/min, 60r/min or 70r/min. If the preset rotation speed value C is set to a smaller value, the air conditioner 1000 may frequently enter the false defrost mode, affecting the normal operation of the air conditioner 1000 . Therefore, the preset rotation speed value C can be set to be greater than a certain value. It should be noted that the preset rotation speed value C is a rotation speed value preset based on experiments.

在一些实施例中，在步骤92或92'后(即在控制器40控制空调器1000进入假除霜模式后)，控制器40还被配置为：从空调器1000进入假除霜模式开始，若连续多次确定第一温度T1未下降，控制空调器1000退出所述假除霜模式。In some embodiments, after step 92 or 92' (that is, after the controller 40 controls the air conditioner 1000 to enter the pseudo defrost mode), the controller 40 is further configured to: starting from the air conditioner 1000 entering the pseudo defrost mode, If it is determined that the first temperature T1 has not dropped for several consecutive times, the air conditioner 1000 is controlled to exit the false defrost mode.

由于压缩机201的运行频率F突然升高必然导致第一温度T1降低，因此，若从进入假除霜模式开始，控制器40连续多次确定第一温度T1未下降，则压缩机201的运行频率F并没有降低。例如，在假除霜模式下，当压缩机201的运行频率F已达到最高频率时，即使第二温差△Tm2突然增大，压缩机201的运行频率F也会保持不变。也就是说，压缩机201仍在最高频率下运行。在此情况下，第一温度T1保持不变，室外换热器202上无霜或者存在较少的霜。此时，控制器40可以控制空调器1000直接退出假除霜模式，以制热模式运行。例如，若确定第(n+1)时刻的第一温度T1小于第n时刻的第一温度T1的次数未达到第一预设次数，则压缩机201的运行频率F已是最高频率。在此情况下，虽然设定温度和第三温度T3之间的第二温差△Tm2增大，但实际上压缩机201的运行频率F保持不变并没有降低，从而第一温度T1也保持不变。因此，控制器40控制空调器1000退出假除霜模式并运行制热模式。Since the sudden increase in the operating frequency F of the compressor 201 will inevitably lead to a decrease in the first temperature T1, therefore, if the controller 40 determines that the first temperature T1 has not decreased multiple times since entering the false defrost mode, the operation of the compressor 201 The frequency F does not decrease. For example, in the false defrost mode, when the operating frequency F of the compressor 201 has reached the highest frequency, even if the second temperature difference ΔTm2 suddenly increases, the operating frequency F of the compressor 201 will remain unchanged. That is, the compressor 201 is still operating at the highest frequency. In this case, the first temperature T1 remains unchanged, and there is no frost or less frost on the outdoor heat exchanger 202 . At this time, the controller 40 can control the air conditioner 1000 to directly exit the false defrost mode and operate in the heating mode. For example, if it is determined that the number of times that the first temperature T1 at the (n+1)th time is smaller than the first temperature T1 at the nth time does not reach the first preset number, the operating frequency F of the compressor 201 is already the highest frequency. In this case, although the second temperature difference ΔTm2 between the set temperature and the third temperature T3 increases, the operating frequency F of the compressor 201 actually remains unchanged and does not decrease, so the first temperature T1 also remains unchanged. Change. Therefore, the controller 40 controls the air conditioner 1000 to exit the false defrost mode and operate the heating mode.

在一些实施例中，在步骤94之后，控制器40还被配置为：在确定空调器1000进入假除霜模式的运行时间大于第四预设时长H4后，确定第(m+1)时刻的第一温度T1小于第m时刻的第一温度T1，控制空调器1000退出假除霜模式。m为自然数，m大于n。In some embodiments, after step 94 , the controller 40 is further configured to: after determining that the operating time of the air conditioner 1000 entering the false defrost mode is greater than the fourth preset time period H4 , determine the (m+1)th moment. The first temperature T1 is less than the first temperature T1 at the m-th moment, and the air conditioner 1000 is controlled to exit the false defrost mode. m is a natural number, m is greater than n.

将第(m+1)时刻的第一温度T1记为T1(m+1)，第m时刻的第一温度T1记为T1(m)。例如，在空调器1000在假除霜模式下的运行时间超过第四预设时长H4后，若第一温度T1变化，且第(m+1)时刻的第一温度T1(m+1)小于第m时刻的第一温度T1(m)(即，T1(m+1)＜T1(m))，则第一温度T1降低，从而压缩机201的运行频率F已是最高频率，压缩机201的运行频率F未升高。在此情况下，导致第一温度T1下降的原因是由于室外换热器202结霜。这样，控制器40可以控制空调器1000退出假除霜模式，并进入制热模式运行，以进行空调器1000是否除霜的判断。Let the first temperature T1 at the (m+1)th moment be denoted as T1(m+1), and the first temperature T1 at the mth moment be denoted as T1(m). For example, after the operating time of the air conditioner 1000 in the false defrost mode exceeds the fourth preset time period H4, if the first temperature T1 changes, and the first temperature T1(m+1) at the (m+1)th moment is less than At the first temperature T1(m) at the m-th moment (that is, T1(m+1)<T1(m)), the first temperature T1 decreases, so the operating frequency F of the compressor 201 is already the highest frequency. The compressor 201 The operating frequency F has not increased. In this case, the cause of the decrease in the first temperature T1 is frost on the outdoor heat exchanger 202 . In this way, the controller 40 can control the air conditioner 1000 to exit the false defrost mode and enter the heating mode to determine whether the air conditioner 1000 is defrosted.

本公开一些实施例还提供了一种空调器的除霜控制方法，该方法应用于控制器上。所述空调器与上述空调器1000的结构类似。所述空调器包括上述室内机10和上述室外机20。室外机20包括压缩机201。Some embodiments of the present disclosure also provide a defrost control method for an air conditioner, which method is applied to a controller. The air conditioner has a similar structure to the air conditioner 1000 described above. The air conditioner includes the indoor unit 10 and the outdoor unit 20 . The outdoor unit 20 includes a compressor 201.

在一些实施例中，如图12所示，该方法包括步骤111至步骤115。In some embodiments, as shown in Figure 12, the method includes steps 111 to 115.

在步骤111中，在空调器1000处于制热模式下，获取设定温度和第三温度T3，以确定第二温差△Tm2(室内温差)。这里，所述设定温度、第三温度T3以及第二温差△Tm2可参见前文的相关描述，此处不再赘述。In step 111, when the air conditioner 1000 is in the heating mode, the set temperature and the third temperature T3 are obtained to determine the second temperature difference ΔTm2 (indoor temperature difference). Here, the set temperature, the third temperature T3 and the second temperature difference ΔTm2 can be referred to the relevant descriptions above, and will not be described again here.

在步骤112中，确定在预设周期G内第二温差△Tm2的增加值大于或等于预设温差阈值B，控制空调器1000进入假除霜模式。In step 112, it is determined that the increase value of the second temperature difference ΔTm2 within the preset period G is greater than or equal to the preset temperature difference threshold B, and the air conditioner 1000 is controlled to enter the false defrost mode.

在步骤113中，在假除霜模式下，获取第一温度T1。In step 113, in the false defrost mode, the first temperature T1 is obtained.

在步骤114中，确定第(n+1)时刻的第一温度T1小于第n时刻的第一温度T1，控制空调器1000继续制热，并控制空调器1000不进行除霜。这里，n为自然数。第n时刻的第一温度T1为T1(n)，第(n+1)时刻的第一温度T1为T1(n+1)。In step 114, it is determined that the first temperature T1 at the (n+1)th time is less than the first temperature T1 at the nth time, the air conditioner 1000 is controlled to continue heating, and the air conditioner 1000 is controlled not to perform defrosting. Here, n is a natural number. The first temperature T1 at the nth time is T1(n), and the first temperature T1 at the (n+1)th time is T1(n+1).

在步骤115中，在空调器1000在假除霜模式下运行时间达到第四预设时长H4之前，确定第一温度T1、第二温度T2和室内风机102的转速S在第三预设时长H3内保持不变，控制空调器1000退出假除霜模式。所述第三预设时长H3小于或等于第四预设时长H4。In step 115, before the operating time of the air conditioner 1000 in the false defrost mode reaches the fourth preset time period H4, it is determined that the first temperature T1, the second temperature T2 and the rotation speed S of the indoor fan 102 are within the third preset time period H3. The temperature remains unchanged, and the air conditioner 1000 is controlled to exit the false defrost mode. The third preset time length H3 is less than or equal to the fourth preset time length H4.

在一些实施例中，步骤114包括：连续第一预设次数地确定第(n+1)时刻的第一温度T1小于第n时刻的第一温度T1，控制空调器1000继续制热，并控制空调器1000不进行除霜。In some embodiments, step 114 includes: determining for a first preset number of times that the first temperature T1 at the (n+1)th moment is less than the first temperature T1 at the nth moment, controlling the air conditioner 1000 to continue heating, and controlling The air conditioner 1000 does not defrost.

在一些实施例中，步骤111包括：确定空调器1000在制热模式下的运行时间达到第五预设时长H5，确定空调器1000处于制热模式。In some embodiments, step 111 includes: determining that the operating time of the air conditioner 1000 in the heating mode reaches the fifth preset time length H5, and determining that the air conditioner 1000 is in the heating mode.

在一些实施例中，如图13所示，该方法包括的步骤111和步骤112可被替换为步骤111'和步骤112'。 In some embodiments, as shown in Figure 13, the method includes step 111 and step 112, which may be replaced by step 111' and step 112'.

在步骤111'中，在空调器1000处于制热模式下，获取室内风机102的转速S。In step 111', when the air conditioner 1000 is in the heating mode, the rotation speed S of the indoor fan 102 is obtained.

在步骤112'中，确定在预设周期G内室内风机102的转速S的增加值△S大于或等于预设转速值C，控制空调器1000进入假除霜模式。In step 112', it is determined that the increase value ΔS of the rotation speed S of the indoor fan 102 within the preset period G is greater than or equal to the preset rotation speed value C, and the air conditioner 1000 is controlled to enter the false defrost mode.

在一些实施例中，在步骤112或112'后(即在控制器40控制空调器1000进入假除霜模式后)，该方法还包括：从空调器1000进入假除霜模式开始，若连续多次确定第一温度T1未下降，控制空调器1000退出所述假除霜模式。In some embodiments, after step 112 or 112' (that is, after the controller 40 controls the air conditioner 1000 to enter the false defrost mode), the method further includes: starting from the air conditioner 1000 entering the false defrost mode, if the air conditioner 1000 enters the false defrost mode continuously. It is determined for the first time that the first temperature T1 has not dropped, and the air conditioner 1000 is controlled to exit the false defrost mode.

在一些实施例中，在步骤114之后，该方法还包括：在确定空调器1000进入假除霜模式的运行时间大于第四预设时长H4后，确定第(m+1)时刻的第一温度T1小于第m时刻的第一温度T1，控制空调器1000退出假除霜模式。这里，m为自然数，m大于n。In some embodiments, after step 114, the method further includes: after determining that the operating time of the air conditioner 1000 entering the false defrost mode is greater than the fourth preset time period H4, determining the first temperature at the (m+1)th moment T1 is less than the first temperature T1 at the m-th moment, and the air conditioner 1000 is controlled to exit the false defrost mode. Here, m is a natural number, and m is greater than n.

图14为根据又一些实施例的空调器的除霜控制方法的一种流程图。图15为根据又一些实施例的空调器的除霜控制方法的另一种流程图。以下参考图14和图15对空调器的除霜控制方法做示例性说明。FIG. 14 is a flowchart of a defrost control method of an air conditioner according to further embodiments. FIG. 15 is another flowchart of a defrost control method of an air conditioner according to further embodiments. The defrost control method of the air conditioner will be exemplified below with reference to FIGS. 14 and 15 .

如图14所示，该方法包括步骤121至步骤124。As shown in Figure 14, the method includes steps 121 to 124.

在步骤121中，在空调器1000处于制热模式下，获取室内风机102的转速S或获取所述设定温度和第三温度T3，以确定第二温差△Tm2(室内温差)。In step 121, when the air conditioner 1000 is in the heating mode, the rotation speed S of the indoor fan 102 or the set temperature and the third temperature T3 are obtained to determine the second temperature difference ΔTm2 (indoor temperature difference).

在步骤122中，判断在预设周期G内，第二温差△Tm2的增加值是否大于或等于预设温差阈值B，或者室内风机102的转速S的增加值△S是否大于或等于预设转速值C。若是，则执行步骤123；若否，则执行步骤124。In step 122, it is determined whether the increase value of the second temperature difference ΔTm2 is greater than or equal to the preset temperature difference threshold B within the preset period G, or whether the increase value ΔS of the rotation speed S of the indoor fan 102 is greater than or equal to the preset rotation speed. Value C. If yes, perform step 123; if not, perform step 124.

在步骤123中，控制空调器1000进入假除霜模式。In step 123, the air conditioner 1000 is controlled to enter the false defrost mode.

在步骤124中，控制空调器1000保持制热运行，返回执行步骤121。In step 124, the air conditioner 1000 is controlled to maintain the heating operation and returns to step 121.

在本公开一些实施例提供的空调器1000中，当控制器40确定室内风机102的转速S的增加值△S大于或等于预设转速值C，或者第二温差△Tm2的增加值大于或等于预设温差阈值B时，控制器40可以控制空调器1000进入假除霜模式，然后确定是否控制空调器1000进入除霜模式。这样，可以避免空调器1000在无霜时除霜以及频繁除霜的情况，从而提高空调器1000的运行稳定性，减少能源耗费。In the air conditioner 1000 provided in some embodiments of the present disclosure, when the controller 40 determines that the increase value ΔS of the rotation speed S of the indoor fan 102 is greater than or equal to the preset rotation speed value C, or the increase value ΔTm2 of the second temperature difference ΔTm2 is greater than or equal to When the temperature difference threshold B is preset, the controller 40 may control the air conditioner 1000 to enter the false defrost mode, and then determine whether to control the air conditioner 1000 to enter the defrost mode. In this way, defrosting of the air conditioner 1000 when there is no frost and frequent defrosting can be avoided, thereby improving the operating stability of the air conditioner 1000 and reducing energy consumption.

在步骤123后，如图15所示，该方法还包括步骤125至步骤129。After step 123, as shown in Figure 15, the method also includes steps 125 to 129.

在步骤125中，连续第一预设次数地判断第(n+1)时刻的第一温度T1是否小于第n时刻的第一温度T1。若是，则执行步骤126；若否，则执行步骤128。In step 125, it is determined whether the first temperature T1 at the (n+1)th time is less than the first temperature T1 at the nth time for a first preset number of times. If yes, perform step 126; if not, perform step 128.

在步骤126中，在空调器1000在假除霜模式下运行时间达到第四预设时长H4之前，判断第一温度T1、第二温度T2和室内风机102的转速S是否在第三预设时长H3内保持不变。若是，则执行步骤128；若否，则执行步骤127。In step 126, before the operating time of the air conditioner 1000 in the false defrost mode reaches the fourth preset time period H4, it is determined whether the first temperature T1, the second temperature T2 and the rotation speed S of the indoor fan 102 are within the third preset time period. Remain unchanged within H3. If yes, perform step 128; if not, perform step 127.

在步骤127中，在确定空调器1000进入假除霜模式的运行时间大于第四预设时长H4后，确定第(m+1)时刻的第一温度T1小于第m时刻的第一温度T1，控制空调器1000退出假除霜模式。这里，m为自然数，m大于n。In step 127, after it is determined that the operating time of the air conditioner 1000 entering the false defrost mode is greater than the fourth preset time length H4, it is determined that the first temperature T1 at the (m+1)th time is less than the first temperature T1 at the mth time, Control the air conditioner 1000 to exit the false defrost mode. Here, m is a natural number, and m is greater than n.

在步骤128中，控制空调器1000退出假除霜模式。In step 128, the air conditioner 1000 is controlled to exit the false defrost mode.

在步骤129中，控制空调器1000进入制热模式。In step 129, the air conditioner 1000 is controlled to enter the heating mode.

本公开一些实施例中的步骤序号仅是为了便于描述本公开中的一些实施例，而不能理解为对步骤的顺序限定。步骤的执行顺序可以根据实际需求具体确定，不限于本公开一些实施例中的步骤顺序。The step numbers in some embodiments of the present disclosure are only for the convenience of describing some embodiments of the present disclosure and cannot be understood as limiting the order of the steps. The execution order of the steps can be specifically determined according to actual needs and is not limited to the order of steps in some embodiments of the present disclosure.

在上述实施例的描述中，具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

本领域的技术人员将会理解，本发明的公开范围不限于上述具体实施例，并且可以在不脱离本申请的精神的情况下对实施例的某些要素进行修改和替换。本申请的范围受所附权利要求的限制。 Those skilled in the art will understand that the disclosed scope of the present invention is not limited to the specific embodiments described above, and that certain elements of the embodiments may be modified and replaced without departing from the spirit of the application. The scope of the application is limited by the appended claims.

Claims

一种空调器，包括：An air conditioner, including:

室内机；indoor unit;

室外机；The outdoor unit;

控制器，所述控制器被配置为：A controller configured to:

在所述空调器处于制热模式下，获取所述空调器的第一运行参数；When the air conditioner is in the heating mode, obtain the first operating parameter of the air conditioner;

根据所述第一运行参数控制所述空调器进入假除霜模式；Control the air conditioner to enter a false defrost mode according to the first operating parameter;

在所述假除霜模式下，获取所述空调器的第二运行参数，控制所述空调器制热，并控制所述空调器不进行除霜；In the false defrost mode, obtain the second operating parameters of the air conditioner, control the heating of the air conditioner, and control the air conditioner not to defrost;

根据所述第一运行参数或所述第二运行参数中的至少一个的变化趋势，控制所述空调器退出所述假除霜模式。The air conditioner is controlled to exit the false defrost mode according to the changing trend of at least one of the first operating parameter or the second operating parameter.
根据权利要求1所述的空调器，其中，The air conditioner according to claim 1, wherein,

所述室外机包括压缩机、室外换热器和第一温度传感器，所述第一温度传感器设置在所述室外换热器的盘管上，且被配置为检测所述室外换热器的盘管的第一温度；The outdoor unit includes a compressor, an outdoor heat exchanger and a first temperature sensor. The first temperature sensor is disposed on a coil of the outdoor heat exchanger and is configured to detect the coil of the outdoor heat exchanger. The first temperature of the tube;

所述第一运行参数包括所述压缩机的运行频率，所述第二运行参数包括所述第一温度，所述控制器被配置为：The first operating parameter includes an operating frequency of the compressor, the second operating parameter includes the first temperature, and the controller is configured to:

在所述空调器处于所述制热模式下，获取所述压缩机的运行频率；When the air conditioner is in the heating mode, obtain the operating frequency of the compressor;

若确定在预设周期内所述压缩机的运行频率的增加值大于预设频率阈值，控制所述空调器进入所述假除霜模式；If it is determined that the increase in the operating frequency of the compressor within the preset period is greater than the preset frequency threshold, control the air conditioner to enter the false defrost mode;

在所述假除霜模式下，获取所述第一温度；In the false defrost mode, obtain the first temperature;

若确定第(n+1)时刻的所述第一温度小于第n时刻的所述第一温度，控制所述空调器继续制热而非除霜；其中，n为自然数。If it is determined that the first temperature at the (n+1)th time is less than the first temperature at the nth time, the air conditioner is controlled to continue heating instead of defrosting; where n is a natural number.
根据权利要求2所述的空调器，其中，所述控制器满足以下之一：The air conditioner according to claim 2, wherein the controller satisfies one of the following:

在确定所述第(n+1)时刻的所述第一温度小于所述第n时刻的所述第一温度之后，所述控制器还被配置为：若确定所述第一温度在上升至第一目标温度后的第一预设时长内保持不变，且所述压缩机的运行频率增加至目标频率后保持不变，控制所述空调器退出所述假除霜模式，并控制所述空调器进入所述制热模式；其中，所述第一目标温度大于满足所述空调器的除霜条件的所述第一温度；After determining that the first temperature at the (n+1)th time is less than the first temperature at the nth time, the controller is further configured to: if it is determined that the first temperature is rising to The first target temperature remains unchanged for a first preset period of time, and the operating frequency of the compressor remains unchanged after increasing to the target frequency, controlling the air conditioner to exit the false defrost mode, and controlling the The air conditioner enters the heating mode; wherein the first target temperature is greater than the first temperature that satisfies the defrosting condition of the air conditioner;

或者，or,

在确定所述第(n+1)时刻的所述第一温度小于所述第n时刻的所述第一温度之后，所述控制器还被配置为：若确定所述第一温度在上升至第二目标温度之后的第二预设时长内保持不变，之后又降低至第三目标温度，以及所述压缩机的运行频率在增加至目标频率后保持不变，控制所述空调器进行除霜；其中，所述第三目标温度为满足所述空调器的除霜条件的所述第一温度。After determining that the first temperature at the (n+1)th time is less than the first temperature at the nth time, the controller is further configured to: if it is determined that the first temperature is rising to The second target temperature remains unchanged for a second preset period of time, and then decreases to the third target temperature, and the operating frequency of the compressor remains unchanged after increasing to the target frequency, and the air conditioner is controlled to perform dehumidification. Frost; wherein the third target temperature is the first temperature that satisfies the defrosting condition of the air conditioner.
根据权利要求1所述的空调器，其中，The air conditioner according to claim 1, wherein,

所述室内机包括室内换热器、室内风机和第二温度传感器，所述第二温度传感器设置在所述室内换热器的盘管上，且被配置为检测所述室内换热器的盘管的第二温度；The indoor unit includes an indoor heat exchanger, an indoor fan and a second temperature sensor. The second temperature sensor is disposed on a coil of the indoor heat exchanger and is configured to detect the coil of the indoor heat exchanger. the second temperature of the tube;

所述室外机包括压缩机、室外换热器和第一温度传感器，所述第一温度传感器设置在所述室外换热器的盘管上，且被配置为检测所述室外换热器的盘管的第一温度；The outdoor unit includes a compressor, an outdoor heat exchanger and a first temperature sensor. The first temperature sensor is disposed on a coil of the outdoor heat exchanger and is configured to detect the coil of the outdoor heat exchanger. The first temperature of the tube;

所述第一运行参数包括所述压缩机的运行频率，所述第二运行参数包括所述第一温度、所述第二温度以及室内风机的转速，所述控制器被配置为：The first operating parameters include the operating frequency of the compressor, the second operating parameters include the first temperature, the second temperature and the rotation speed of the indoor fan, and the controller is configured as:

在所述空调器处于所述制热模式下，获取所述压缩机的运行频率；When the air conditioner is in the heating mode, obtain the operating frequency of the compressor;

若确定在预设周期内所述压缩机的运行频率的增加值大于预设频率阈值，控制所述空调器进入所述假除霜模式；If it is determined that the increase in the operating frequency of the compressor within the preset period is greater than the preset frequency threshold, control the air conditioner to enter the false defrost mode;

在所述假除霜模式下，获取所述第一温度、所述第二温度和所述室内风机的转速；In the false defrost mode, obtain the first temperature, the second temperature and the rotation speed of the indoor fan;

若确定第(n+1)时刻的所述第一温度小于第n时刻的所述第一温度，控制所述空调器继续制热而非除霜；其中，n为自然数；If it is determined that the first temperature at the (n+1)th time is less than the first temperature at the nth time, the air conditioner is controlled to continue heating instead of defrosting; where n is a natural number;

若确定所述第一温度、所述第二温度和所述室内风机的转速在第三预设时长内保持不变，控制所述空调器退出所述假除霜模式。 If it is determined that the first temperature, the second temperature and the rotation speed of the indoor fan remain unchanged within a third preset time period, the air conditioner is controlled to exit the false defrost mode.
根据权利要求4所述的空调器，其中，在确定所述第(n+1)时刻的所述第一温度小于所述第n时刻的所述第一温度之后，所述控制器还被配置为：The air conditioner of claim 4, wherein after determining that the first temperature at the (n+1)th time is less than the first temperature at the nth time, the controller is further configured for:

若确定所述第一温度在上升至第二目标温度之后在第二预设时长内保持不变，之后又降低至第三目标温度，以及所述压缩机的运行频率在增加至目标频率后保持不变，控制所述空调器进行除霜；其中，所述第三目标温度为满足所述空调器的除霜条件的所述第一温度。If it is determined that the first temperature remains unchanged for a second preset time period after rising to the second target temperature, and then decreases to the third target temperature, and the operating frequency of the compressor remains unchanged after increasing to the target frequency. Without changing, the air conditioner is controlled to perform defrosting; wherein the third target temperature is the first temperature that satisfies the defrosting condition of the air conditioner.
根据权利要求1所述的空调器，其中，The air conditioner according to claim 1, wherein,

所述室内机包括室内换热器、室内风机、第二温度传感器和第三温度传感器，所述第二温度传感器设置在所述室内换热器的盘管上，且被配置为检测所述室内换热器的盘管的第二温度，所述第三温度传感器设置在所述室内换热器上，且被配置为检测所述室内环境的第三温度；The indoor unit includes an indoor heat exchanger, an indoor fan, a second temperature sensor and a third temperature sensor. The second temperature sensor is provided on a coil of the indoor heat exchanger and is configured to detect the indoor temperature. a second temperature of the coil of the heat exchanger, the third temperature sensor being disposed on the indoor heat exchanger and configured to detect a third temperature of the indoor environment;

所述室外机包括室外换热器和第一温度传感器，所述第一温度传感器设置在所述室外换热器的盘管上，且被配置为检测所述室外换热器的盘管的第一温度；The outdoor unit includes an outdoor heat exchanger and a first temperature sensor. The first temperature sensor is disposed on a coil of the outdoor heat exchanger and is configured to detect a third temperature of the coil of the outdoor heat exchanger. a temperature;

所述第一运行参数包括所述室内风机的转速、设定温度或所述第三温度，所述第二运行参数包括所述第一温度、所述第二温度以及所述室内风机的转速，所述控制器被配置为：The first operating parameters include the rotational speed of the indoor fan, the set temperature or the third temperature, and the second operating parameters include the first temperature, the second temperature and the rotational speed of the indoor fan, The controller is configured to:

在所述空调器处于所述制热模式下，获取所述室内风机的转速或获取所述设定温度和所述第三温度，以确定室内温差；其中，所述室内温差为所述设定温度与所述第三温度之差，所述设定温度为所需的室内环境温度；When the air conditioner is in the heating mode, obtain the rotation speed of the indoor fan or obtain the set temperature and the third temperature to determine the indoor temperature difference; wherein the indoor temperature difference is the set temperature The difference between the temperature and the third temperature, the set temperature is the required indoor ambient temperature;

若确定在预设周期内所述室内温差的增加值大于预设温差阈值或确定在所述预设周期内的所述室内风机的转速的增加值大于预设转速值，控制所述空调器进入所述假除霜模式；If it is determined that the increase value of the indoor temperature difference within the preset period is greater than the preset temperature difference threshold or it is determined that the increase value of the rotation speed of the indoor fan within the preset period is greater than the preset rotation speed value, the air conditioner is controlled to enter The false defrost mode;

在所述假除霜模式下，若确定第(n+1)时刻的所述第一温度小于第n时刻的所述第一温度，控制所述空调器继续制热而非除霜；其中，n为自然数；In the false defrost mode, if it is determined that the first temperature at the (n+1)th time is less than the first temperature at the nth time, the air conditioner is controlled to continue heating instead of defrosting; wherein, n is a natural number;

在所述空调器在所述假除霜模式下运行时间达到第四预设时长之前，若确定所述第一温度、所述第二温度和所述室内风机的转速在第三预设时长内保持不变，控制所述空调器退出所述假除霜模式；其中，所述第三预设时长小于或等于所述第四预设时长。Before the operating time of the air conditioner in the false defrost mode reaches the fourth preset time period, if it is determined that the first temperature, the second temperature and the rotation speed of the indoor fan are within the third preset time period. Remaining unchanged, the air conditioner is controlled to exit the false defrost mode; wherein the third preset time period is less than or equal to the fourth preset time period.
根据权利要求6所述的空调器，其中，在控制所述空调器进入所述假除霜模式后，所述控制器还被配置为：The air conditioner according to claim 6, wherein, after controlling the air conditioner to enter the false defrost mode, the controller is further configured to:

从所述空调器进入所述假除霜模式开始，若连续多次确定所述第一温度未下降，控制所述空调器退出所述假除霜模式。From the time the air conditioner enters the false defrost mode, if it is determined that the first temperature has not dropped for several consecutive times, the air conditioner is controlled to exit the false defrost mode.
根据权利要求6所述的空调器，其中，在确定所述空调器进入所述假除霜模式的运行时间大于所述第四预设时长后，所述控制器还被配置为：The air conditioner according to claim 6, wherein after determining that the operating time of the air conditioner entering the false defrost mode is greater than the fourth preset time length, the controller is further configured to:

若确定第(m+1)时刻的所述第一温度小于第m时刻的所述第一温度，控制所述空调器退出所述假除霜模式；其中，m为自然数，m大于n。If it is determined that the first temperature at the (m+1)th time is less than the first temperature at the mth time, the air conditioner is controlled to exit the false defrost mode; where m is a natural number and m is greater than n.
根据权利要求1所述的空调器，其中，所述室外机包括室外换热器和第四温度传感器，所述第四温度传感器设置在所述室外换热器上，且被配置为检测所述室外环境的第四温度，所述控制器满足以下至少之一：The air conditioner according to claim 1, wherein the outdoor unit includes an outdoor heat exchanger and a fourth temperature sensor, the fourth temperature sensor is provided on the outdoor heat exchanger and is configured to detect the The fourth temperature of the outdoor environment, the controller meets at least one of the following:

在控制所述空调器进入所述假除霜模式后，所述控制器被配置为：控制所述第四温度不满足所述空调器进行除霜的条件，以控制所述空调器不进行除霜；After controlling the air conditioner to enter the false defrost mode, the controller is configured to: control the fourth temperature not to meet the conditions for the air conditioner to perform defrosting, so as to control the air conditioner not to perform defrosting. Frost;

或者，or,

在控制所述空调器退出所述假除霜模式后，所述控制器还被配置为：取消对所述第四温度的限定，以取消在所述假除霜模式下所述空调器不进行除霜的限制。After controlling the air conditioner to exit the false defrost mode, the controller is further configured to: cancel the limit on the fourth temperature, so as to cancel the air conditioner not performing any operation in the false defrost mode. Defrost restrictions.
根据权利要求1所述的空调器，其中，在确定所述空调器处于所述制热模式之前，所述控制器被配置为：确定所述空调器在所述制热模式下的运行时间达到第五预设时长。The air conditioner according to claim 1, wherein before determining that the air conditioner is in the heating mode, the controller is configured to: determine that the operating time of the air conditioner in the heating mode reaches The fifth preset duration.
根据权利要求2至9中任一项所述的空调器，其中，在确定所述第(n+1)时刻的所述第一温度小于所述第n时刻的所述第一温度时，所述控制器被配置为：The air conditioner according to any one of claims 2 to 9, wherein when it is determined that the first temperature at the (n+1)th time is less than the first temperature at the nth time, the The controller described above is configured as:

若连续目标预设次数地确定所述第(n+1)时刻的所述第一温度小于所述第n时刻的所述第一温度，控制所述空调器继续制热，并控制所述空调器不进行除霜；其中，所述目标预设次数大于或等于两次。If it is determined that the first temperature at the (n+1)th time is less than the first temperature at the nth time for a preset number of consecutive target times, the air conditioner is controlled to continue heating and the air conditioner is controlled. The device does not defrost; wherein, the object The preset number of times is greater than or equal to two times.
一种空调器的除霜控制方法，应用到所述空调器的控制器上，所述空调器包括室内机以及室外机，所述方法包括：A defrost control method for an air conditioner, applied to the controller of the air conditioner, the air conditioner includes an indoor unit and an outdoor unit, the method includes:

在所述空调器处于制热模式下，获取所述空调器的第一运行参数；When the air conditioner is in the heating mode, obtain the first operating parameters of the air conditioner;

根据所述第一运行参数控制所述空调器进入假除霜模式；Control the air conditioner to enter a false defrost mode according to the first operating parameter;

在所述假除霜模式下，获取所述空调器的第二运行参数，控制所述空调器制热，并控制所述空调器不进行除霜；In the false defrost mode, obtain the second operating parameters of the air conditioner, control the air conditioner to heat, and control the air conditioner not to defrost;

根据所述第一运行参数或所述第二运行参数中的至少一个的变化趋势，控制所述空调器退出所述假除霜模式。The air conditioner is controlled to exit the false defrost mode according to the changing trend of at least one of the first operating parameter or the second operating parameter.
根据权利要求12所述的空调器的除霜控制方法，其中，The defrost control method of an air conditioner according to claim 12, wherein:

所述室外机包括压缩机、室外换热器和第一温度传感器，所述第一温度传感器设置在所述室外换热器的盘管上，且被配置为检测所述室外换热器的盘管的第一温度；The outdoor unit includes a compressor, an outdoor heat exchanger and a first temperature sensor. The first temperature sensor is disposed on a coil of the outdoor heat exchanger and is configured to detect the coil of the outdoor heat exchanger. The first temperature of the tube;

所述第一运行参数包括所述压缩机的运行频率，所述第二运行参数包括所述第一温度，所述方法包括：The first operating parameter includes the operating frequency of the compressor, the second operating parameter includes the first temperature, and the method includes:

在所述空调器处于所述制热模式下，获取所述压缩机的运行频率；When the air conditioner is in the heating mode, obtain the operating frequency of the compressor;

若确定在预设周期内所述压缩机的运行频率的增加值大于预设频率阈值，控制所述空调器进入所述假除霜模式；If it is determined that the increase in the operating frequency of the compressor within the preset period is greater than the preset frequency threshold, control the air conditioner to enter the false defrost mode;

在所述假除霜模式下，获取所述第一温度；In the false defrost mode, obtain the first temperature;

若确定第(n+1)时刻的所述第一温度小于第n时刻的所述第一温度，控制所述空调器继续制热而非除霜；其中，n为自然数。If it is determined that the first temperature at the (n+1)th time is less than the first temperature at the nth time, the air conditioner is controlled to continue heating instead of defrosting; where n is a natural number.
根据权利要求13所述的空调器的除霜控制方法，其中，所述方法满足以下之一：The defrost control method of an air conditioner according to claim 13, wherein the method satisfies one of the following:

在确定所述第(n+1)时刻的所述第一温度小于所述第n时刻的所述第一温度之后，所述方法还包括：若确定所述第一温度在上升至第一目标温度后在第一预设时长内保持不变，且所述压缩机的运行频率增加至目标频率后保持不变，控制所述空调器退出所述假除霜模式，并控制所述空调器进入所述制热模式；其中，所述第一目标温度大于满足所述空调器的除霜条件的所述第一温度；After determining that the first temperature at the (n+1)th time is less than the first temperature at the nth time, the method further includes: if it is determined that the first temperature is rising to a first target After the temperature remains unchanged within the first preset time period, and the operating frequency of the compressor remains unchanged after increasing to the target frequency, the air conditioner is controlled to exit the false defrost mode, and the air conditioner is controlled to enter The heating mode; wherein the first target temperature is greater than the first temperature that satisfies the defrosting condition of the air conditioner;

或者，or,

在确定所述第(n+1)时刻的所述第一温度小于所述第n时刻的所述第一温度之后，所述方法还包括：若确定所述第一温度在上升至第二目标温度之后在第二预设时长内保持不变，之后又降低至第三目标温度，以及所述压缩机的运行频率在增加至目标频率后保持不变，控制所述空调器进行除霜；其中，所述第三目标温度为满足所述空调器的除霜条件的所述第一温度。After determining that the first temperature at the (n+1)th time is less than the first temperature at the nth time, the method further includes: if it is determined that the first temperature is rising to a second target The temperature remains unchanged for a second preset period of time, and then decreases to the third target temperature, and the operating frequency of the compressor remains unchanged after increasing to the target frequency, and the air conditioner is controlled to defrost; wherein , the third target temperature is the first temperature that satisfies the defrosting condition of the air conditioner.
根据权利要求12所述的空调器的除霜控制方法，其中，The defrost control method of an air conditioner according to claim 12, wherein:

所述室内机包括室内换热器、室内风机和第二温度传感器，所述第二温度传感器设置在所述室内换热器的盘管上，且被配置为检测所述室内换热器的盘管的第二温度；The indoor unit includes an indoor heat exchanger, an indoor fan and a second temperature sensor. The second temperature sensor is disposed on a coil of the indoor heat exchanger and is configured to detect the coil of the indoor heat exchanger. the second temperature of the tube;

所述室外机包括压缩机、室外换热器和第一温度传感器，所述第一温度传感器设置在所述室外换热器的盘管上，且被配置为检测所述室外换热器的盘管的第一温度；The outdoor unit includes a compressor, an outdoor heat exchanger and a first temperature sensor. The first temperature sensor is disposed on a coil of the outdoor heat exchanger and is configured to detect the coil of the outdoor heat exchanger. The first temperature of the tube;

所述第一运行参数包括所述压缩机的运行频率，所述第二运行参数包括所述第一温度、所述第二温度以及室内风机的转速，所述方法包括：The first operating parameter includes the operating frequency of the compressor, the second operating parameter includes the first temperature, the second temperature and the rotation speed of the indoor fan, and the method includes:

在所述空调器处于所述制热模式下，获取所述压缩机的运行频率；When the air conditioner is in the heating mode, obtain the operating frequency of the compressor;

若确定在预设周期内所述压缩机的运行频率的增加值大于预设频率阈值，控制所述空调器进入所述假除霜模式；If it is determined that the increase in the operating frequency of the compressor within the preset period is greater than the preset frequency threshold, control the air conditioner to enter the false defrost mode;

在所述假除霜模式下，获取所述第一温度、所述第二温度和所述室内风机的转速；In the false defrost mode, obtain the first temperature, the second temperature and the rotation speed of the indoor fan;

若确定第(n+1)时刻的所述第一温度小于第n时刻的所述第一温度，控制所述空调器继续制热而非除霜；其中，n为自然数；If it is determined that the first temperature at the (n+1)th time is less than the first temperature at the nth time, the air conditioner is controlled to continue heating instead of defrosting; where n is a natural number;

若确定所述第一温度、所述第二温度和所述室内风机的转速在第三预设时长内保持不变，室内风机的转速控制所述空调器退出所述假除霜模式。If it is determined that the first temperature, the second temperature and the rotation speed of the indoor fan remain unchanged within a third preset time period, the rotation speed of the indoor fan controls the air conditioner to exit the false defrost mode.
根据权利要求15所述的空调器的除霜控制方法，其中，在确定所述第(n+1)时刻的所述第一温度小于所述第n时刻的所述第一温度之后，所述方法还包括：The defrost control method of an air conditioner according to claim 15, wherein when determining the (n+1)th After the first temperature at the nth moment is less than the first temperature at the nth moment, the method further includes:

若确定所述第一温度在上升至第二目标温度之后在第二预设时长内保持不变，之后又降低至第三目标温度，以及所述压缩机的运行频率在增加至目标频率后保持不变，控制所述空调器进行除霜；其中，所述第三目标温度为满足所述空调器的除霜条件的所述第一温度。If it is determined that the first temperature remains unchanged for a second preset time period after rising to the second target temperature, and then decreases to the third target temperature, and the operating frequency of the compressor remains unchanged after increasing to the target frequency. Without changing, the air conditioner is controlled to perform defrosting; wherein the third target temperature is the first temperature that satisfies the defrosting condition of the air conditioner.
根据权利要求12所述的空调器的除霜控制方法，其中，The defrost control method of an air conditioner according to claim 12, wherein:

所述室内机包括室内换热器、室内风机、第二温度传感器和第三温度传感器，所述第二温度传感器设置在所述室内换热器的盘管上，且被配置为检测所述室内换热器的盘管的第二温度，所述第三温度传感器设置在所述室内换热器上，且被配置为检测所述室内环境的第三温度；The indoor unit includes an indoor heat exchanger, an indoor fan, a second temperature sensor and a third temperature sensor. The second temperature sensor is provided on a coil of the indoor heat exchanger and is configured to detect the indoor temperature. a second temperature of the coil of the heat exchanger, the third temperature sensor being disposed on the indoor heat exchanger and configured to detect a third temperature of the indoor environment;

所述室外机包括室外换热器和第一温度传感器，所述第一温度传感器设置在所述室外换热器的盘管上，且被配置为检测所述室外换热器的盘管的第一温度；The outdoor unit includes an outdoor heat exchanger and a first temperature sensor. The first temperature sensor is disposed on a coil of the outdoor heat exchanger and is configured to detect a third temperature of the coil of the outdoor heat exchanger. a temperature;

所述第一运行参数包括室内风机的转速、设定温度或所述第三温度，所述第二运行参数包括所述第一温度、所述第二温度以及所述室内风机的转速，所述方法包括：The first operating parameters include the rotational speed of the indoor fan, the set temperature or the third temperature, the second operating parameters include the first temperature, the second temperature and the rotational speed of the indoor fan, and the Methods include:

在所述空调器处于所述制热模式下，获取所述室内风机的转速或获取所述设定温度和所述第三温度，以确定室内温差；其中，所述室内温差为所述设定温度与所述第三温度之差，所述设定温度为所需的室内环境温度；When the air conditioner is in the heating mode, obtain the rotation speed of the indoor fan or obtain the set temperature and the third temperature to determine the indoor temperature difference; wherein the indoor temperature difference is the set temperature The difference between the temperature and the third temperature, the set temperature is the required indoor ambient temperature;

若确定在预设周期内所述室内温差的增加值大于预设温差阈值或确定在所述预设周期内的所述室内风机的转速的增加值大于预设转速值，控制所述空调器进入所述假除霜模式；If it is determined that the increase value of the indoor temperature difference within the preset period is greater than the preset temperature difference threshold or it is determined that the increase value of the rotation speed of the indoor fan within the preset period is greater than the preset rotation speed value, the air conditioner is controlled to enter The false defrost mode;

在所述假除霜模式下，若确定第(n+1)时刻的所述第一温度小于第n时刻的所述第一温度，控制所述空调器继续制热而非除霜；其中，n为自然数；In the false defrost mode, if it is determined that the first temperature at the (n+1)th time is less than the first temperature at the nth time, the air conditioner is controlled to continue heating instead of defrosting; wherein, n is a natural number;

在所述空调器在所述假除霜模式下运行时间达到第四预设时长之前，若确定所述第一温度、所述第二温度和所述室内风机的转速在第三预设时长内保持不变，控制所述空调器退出所述假除霜模式；其中，所述第三预设时长小于或等于所述第四预设时长。Before the operating time of the air conditioner in the false defrost mode reaches the fourth preset time period, if it is determined that the first temperature, the second temperature and the rotation speed of the indoor fan are within the third preset time period. Remaining unchanged, the air conditioner is controlled to exit the false defrost mode; wherein the third preset time period is less than or equal to the fourth preset time period.
根据权利要求17所述的空调器的除霜控制方法，其中，在控制所述空调器进入所述假除霜模式后，所述方法还包括：The defrost control method of an air conditioner according to claim 17, wherein after controlling the air conditioner to enter the false defrost mode, the method further includes:

从所述空调器进入所述假除霜模式开始，若连续多次确定所述第一温度未下降，控制所述空调器退出所述假除霜模式。From the time the air conditioner enters the false defrost mode, if it is determined that the first temperature has not dropped for several consecutive times, the air conditioner is controlled to exit the false defrost mode.
根据权利要求17所述的空调器的除霜控制方法，其中，在确定所述空调器进入所述假除霜模式的运行时间大于所述第四预设时长后，所述方法还包括：The defrost control method of an air conditioner according to claim 17, wherein after determining that the operating time of the air conditioner entering the false defrost mode is greater than the fourth preset time length, the method further includes:

若确定第(m+1)时刻的所述第一温度小于第m时刻的所述第一温度，控制所述空调器退出所述假除霜模式；其中，m为自然数，m大于n。If it is determined that the first temperature at the (m+1)th time is less than the first temperature at the mth time, the air conditioner is controlled to exit the false defrost mode; where m is a natural number and m is greater than n.
根据权利要求12所述的空调器的除霜控制方法，其中，所述方法还包括：The defrost control method of an air conditioner according to claim 12, wherein the method further includes:

若确定所述空调器在所述制热模式下的运行时间达到第五预设时长，确定所述空调器处于所述制热模式。 If it is determined that the operating time of the air conditioner in the heating mode reaches the fifth preset time length, it is determined that the air conditioner is in the heating mode.