WO2018214609A1 - Air conditioner and defrosting control method therefor - Google Patents
Air conditioner and defrosting control method therefor Download PDFInfo
- Publication number
- WO2018214609A1 WO2018214609A1 PCT/CN2018/077792 CN2018077792W WO2018214609A1 WO 2018214609 A1 WO2018214609 A1 WO 2018214609A1 CN 2018077792 W CN2018077792 W CN 2018077792W WO 2018214609 A1 WO2018214609 A1 WO 2018214609A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air conditioner
- defrosting
- condition
- mode
- compressor
- Prior art date
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
Definitions
- the invention relates to the field of air conditioners, and in particular to an air conditioner and a defrosting control method thereof.
- An air conditioner (such as a household air conditioner) is a device capable of adjusting the temperature of an indoor environment.
- the working principle is that the indoor ambient temperature is changed by a state of high pressure/low pressure/gaseous/liquid state between the circulating pipes through the refrigerant. Decrease or increase, that is, from the perspective of the air conditioner indoor unit, the air conditioner is placed in a cooling or heating cycle.
- the air conditioner outdoor unit functions as an evaporator (the low-pressure liquid refrigerant is heated to evaporate in the evaporator and becomes a low-pressure gas state) and the air-conditioning indoor unit functions as a condenser.
- the coil of the outdoor unit of the air conditioner starts to frost.
- the frost on the outer wall of the outdoor unit coil reaches a certain thickness, the heating capacity of the air conditioner will be higher. The lower the level, the worse. Therefore, in order to ensure the heating effect of the air conditioner, the air conditioner outdoor unit must be defrosted.
- reverse cycle defrosting is generally used in the prior art (the four-way valve is reversed, and the air conditioner indoor unit is used as an evaporator during the defrosting, and the air conditioner outdoor unit is used as a condenser, even if the air conditioner Running defrosting in the refrigeration cycle) or bypass defrosting (extracting a separate bypass branch from the high pressure side of the compressor to the air conditioner outdoor unit, even if the air conditioner is still operating in the heating cycle without stopping defrosting)
- the method is to defrost the air conditioner outdoor unit.
- the reverse cycle defrosting method has a high defrosting efficiency.
- the defrosting method is used to defrosting the outdoor unit of the air conditioner, only a part of the refrigerant needs to be bypassed to the outdoor unit of the air conditioner, that is, the air conditioner is still maintained in the heating condition, so the indoor temperature in the room is not obvious. The ground is lowered, that is to say, the user experience can be better ensured during the defrosting process.
- the defrosting efficiency of the bypass defrosting method is relatively low, that is, a longer defrosting time is required, and the longer-term bypass defrosting deteriorates the efficiency of the entire heating cycle, so it is only suitable for frosting. Defrost the outdoor unit of the air conditioner in severe cases.
- the invention patent disclosed in the publication discloses an air conditioner defrosting control method and apparatus, which adopts a first defrosting mode (bypass defrosting) and a second defrosting mode (reverse cycle) Defrost) phase switching defrosting method.
- the defrosting control method determines whether to perform defrosting and switching of the defrosting mode by combining two parameters of the running time and the temperature of the outdoor heat exchanger.
- the bypass check valve is opened to control the air conditioner to enter the first defrost mode for defrosting;
- the control air conditioner switches to the cooling mode operation to enter the second defrost mode for defrosting.
- the preset temperature is set according to the outdoor ambient temperature, and the specific value is proportional to the outdoor ambient temperature.
- the above conventional defrosting switching scheme has the following drawbacks: the use of bypass defrosting in the case where the frosting is severe due to external environment reasons or due to internal conditions such as excessive air conditioning running time and unclean defrosting last time. The way is difficult to get rid of frost in a short time. Moreover, since the bypass defrosting is actually a cycle lacking the evaporator, the long-term operation will inevitably result in a very low intake temperature and exhaust temperature, and thus the heat generated by the air conditioner cannot guarantee the defrosting and heating efficiency. Therefore, reverse cycle defrost is required when certain conditions are met.
- the present invention provides an air conditioner in addition to The frost control method is designed to optimize the defrosting control mechanism of the air conditioner.
- the defrosting control method of the air conditioner includes the following steps: obtaining a heating operation duration of the air conditioner in a heating condition after the last defrosting is completed; acquiring a defrosting operation duration of the last defrosting of the air conditioner; acquiring a frequency of the compressor of the air conditioner after completion of one defrosting; and in a case where the judgment condition 1, the judgment condition 2, and the judgment condition 3 are satisfied, the air conditioner is caused to enter a first defrosting mode; wherein the judgment Condition 1 is that the heating operation duration is greater than a first preset duration, the determination condition 2 is that the defrost operation duration is less than a second preset duration, and the determination condition 3 is that the compressor frequency meets a preset condition.
- the air conditioner in a case where only one or two of the determination condition 1, the determination condition 2, and the determination condition 3 are satisfied, the air conditioner is caused to enter Second defrost mode.
- the method includes the steps of: recording the number and conditions of entering the air conditioner into the second defrosting mode; determining whether to make based on the number and conditions of entering the second defrosting mode The air conditioner enters a first defrost mode.
- the step of determining whether to cause the air conditioner to enter the first defrosting mode based on the number of times of entering the second defrosting mode and the condition includes: When the condition that the air conditioner enters the second defrosting mode is "the determination condition 1, the determination condition 2, and two of the determination conditions 3 are satisfied", the air conditioner is caused to enter The first defrost mode.
- the “the frequency of the compressor satisfies the preset condition” is specifically: the working frequency of the compressor is not lower than the preset frequency for a longer period than the third preset time.
- the “the frequency of the compressor satisfies the preset condition” is specifically: the average operating frequency of the compressor that is periodically collected is not lower than the preset frequency.
- the first preset duration is a duration of not less than 50 min
- the second preset duration is a duration of no more than 5 min.
- the first defrosting mode is a reverse cycle defrosting mode
- the second defrosting mode is a bypass defrosting mode
- the present invention also provides an air conditioner including a compressor, an air conditioner outdoor unit, an air conditioner indoor unit, a throttle mechanism, and a four-way valve, wherein the compressor, the air conditioner outdoor unit, and the air conditioner indoor unit are in turn Connected to form a closed loop, the throttle mechanism is disposed between the air conditioner outdoor unit and the air conditioner indoor unit, and the four-way valve can be in a reversing manner to cause the air conditioner to be in a refrigeration cycle or a heating cycle.
- the air conditioner further includes: a bypass branch disposed between the compressor and the air conditioner outdoor unit, and the bypass branch is provided with a bypass check valve; a control portion And used for: the heating operation duration of the air conditioner in the heating condition after the completion of the last defrosting obtained, the defrosting operation duration of the last defrosting of the air conditioner, and the air conditioning after the last defrosting is completed
- the frequency of the compressor of the device determines the number of the determination condition 1, the determination condition 2, and the determination condition 3, wherein the determination condition 1 is that the heating operation duration is greater than the first preset duration; the determination condition 2 is Comment The operation duration is less than the second preset duration; the determination condition 3 is that the frequency of the compressor satisfies the preset condition; and in the case that the determination condition 1, the determination condition 2, and the determination condition 3 are satisfied,
- the air conditioner enters a first defrost mode; in a case where only one or two of the judgment condition 1, the judgment condition 2, and the judgment condition 3 are satisfied, the air conditioner is brought into the second
- the first defrost mode is a reverse cycle defrost mode
- the second defrost mode is a bypass defrost mode
- the defrosting timing and the defrosting mode of the air conditioner are determined according to the judgment conditions (1, 2, 3), and optimized.
- the defrosting control mechanism of the air conditioner that is, the defrosting control method of the present invention, can determine a reasonable defrosting mode at an appropriate defrosting timing.
- FIG. 1 is a schematic structural view of an air conditioner (a bypass branch is provided between a compressor and an outdoor unit of an air conditioner, and reverse cycle defrosting or bypass defrosting can be employed);
- FIG. 2 is a schematic flow chart 1 of a method for controlling defrosting of an air conditioner according to the present invention
- FIG. 3 is a second schematic diagram of the flow of the defrosting control method of the air conditioner of the present invention.
- FIG. 1 is a schematic view of the structure of an air conditioner of the present invention.
- the air conditioner mainly includes a compressor 1, an air conditioner indoor unit 2, an air conditioner outdoor unit 3, a four-way valve 4, a throttle mechanism (such as a throttle valve 5), and a bypass branch 6.
- the compressor 1, the air conditioner indoor unit 2, and the air conditioner outdoor unit 3 are sequentially connected to form a closed loop.
- the air conditioner can be placed in a cooling or heating cycle.
- the reverse cycle defrosting of the air conditioner outdoor unit 3 can be realized in the case where the air conditioner is switched to the refrigeration cycle by switching the four-way valve 4.
- the throttle valve 5 is provided between the air conditioning indoor unit 2 and the air conditioner outdoor unit 3, and is mainly used to adjust the flow rate of the refrigerant.
- the bypass branch 6 is disposed between the exhaust port of the compressor 1 and the air inlet of the air conditioner outdoor unit 3, and the bypass branch 6 is provided with the bypass branch 6 in an on state and non-conducting.
- the bypass check valve 61 that switches between the states can perform bypass defrosting of the air conditioner outdoor unit 3 when the bypass branch 6 is turned on.
- the air conditioner is further provided with a control portion (not shown), and the present invention mainly describes the function of the control portion in defrosting, that is, the control portion is mainly used to enable the air conditioner to obtain reasonable timing at an appropriate defrosting timing.
- Defrosting method the control unit can cause the air conditioner to enter the defrosting mode when the outdoor unit coil of the outdoor unit of the air conditioner needs defrosting according to a predetermined determination condition, and exit the defrosting mode after the defrosting ends.
- the bypass check valve 61 of the bypass branch 6 is turned on to perform bypass defrosting according to a preset condition or combination of conditions, or the four-way valve 4 is reversed to perform reverse cycle defrosting.
- the defrosting control method can determine an appropriate defrosting timing and a reasonable defrosting mode.
- the proper defrosting timing can ensure that the outdoor unit coil of the air conditioner outdoor unit 3 can obtain a timely defrosting strategy in the case of frost formation, thereby avoiding the phenomenon that the heating efficiency is degraded or even deteriorated due to frosting of the outdoor unit coil. , that is to ensure the operational reliability of the air conditioner.
- a reasonable defrosting method balances the defrosting reliability with the user experience, so that the performance of the air conditioner can be optimized to the greatest extent possible.
- control unit is mainly configured to: according to the obtained heating operation time after the last defrosting is completed, the defrosting operation time of the air conditioner in the heating operation, and the defrosting operation time of the last defrosting of the air conditioner
- the frequency of the compressor of the air conditioner after completion of the defrosting is determined, and the number of determination conditions 1, the determination condition 2, and the determination condition 3 are determined.
- the air conditioner is caused.
- the device enters the first defrost mode.
- the judgment condition 1 is that the heating operation duration is greater than the first preset duration
- the determination condition 2 is that the defrost operation duration is less than the second preset duration
- determination condition 3 is that the compressor frequency satisfies the preset condition.
- bypass defrosting and reverse cycle defrosting The physical meaning of the combination of bypass defrosting and reverse cycle defrosting is that during the heating cycle of the air conditioner, most of the exhaust (high pressure end) of the compressor is made in the case where the frosting is not serious or not very serious. It is directly sent to the inlet of the air conditioner indoor unit (condenser), and a small amount of exhaust gas enters the air conditioner outdoor unit 3 through the bypass branch 6, so that the frost of the outdoor unit coil can be timely eliminated in a short time. In the case of severe or severe frosting due to external factors such as environmental climate and weather, and the internal operation of the air conditioner heating cycle is too long and the last defrosting is not clean, the use of bypass defrosting is short. It is difficult or impossible to remove the existing frost in a timely and reliable manner.
- bypass defrosting is essentially a heating cycle that lacks an evaporator, so long-term operation will result in a low suction and exhaust temperature of the compressor, and the heat generated will not be sufficient to continue defrosting or manufacturing.
- Heat so when the set upper limit condition is reached, reverse cycle defrosting is performed, that is, the way of defrosting quickly in a short time in a manner that discards the user experience, in exchange for a benign heating cycle.
- Fig. 2 is a flow chart 1 of the defrosting control method for an air conditioner of the present invention. As shown in FIG. 2, the method mainly includes the following steps:
- step S300 According to the satisfaction condition of the judgment condition (1, 2, 3), the air conditioner is still in the current heating condition (non-bypass defrosting), or the defrosting is performed in a reasonable defrosting mode. Specifically, step S300 specifically includes:
- the first defrost mode is a reverse cycle defrost mode
- the second defrost mode is a bypass defrost mode
- the present invention combines the three judgment conditions formed by the three parameters, and under the condition that all the three judgment conditions are satisfied, the conclusion that the frost formation is serious can be obtained, and thus the air conditioner is made by the reverse cycle defrosting method.
- Quick defrost even if the air conditioner is switched to the refrigeration cycle to stop defrosting, in order to completely remove the accumulated frost.
- the defrosting is performed by the bypass defrosting method, even if the air conditioner can perform the non-stop defrosting while still being able to perform the heating cycle.
- the defrosting control strategy of the air conditioner is optimized by selecting a reasonable defrosting mode at the appropriate defrosting timing.
- the air conditioner enters the bypass defrost mode.
- the current working condition of the air conditioner satisfies the judgment condition (1, 2), (1, 3) or (2, 3)
- the frost is still determined but not serious
- the bypass check valve is opened to make the bypass branch guide Pass
- the air conditioner enters the first defrost mode.
- the air conditioner performs a reverse cycle defrosting.
- the air conditioner is directly switched by switching the four-way valve. Entering the reverse cycle defrost mode, the accumulated frost is completely removed by means of shutdown defrosting to improve the heating performance of the air conditioner.
- the first preset duration, the second preset duration, and the preset condition may be determined by any reasonable manner, such as historical usage data based on the air conditioner, simulation data, or repeated experiments and comparisons by the inventor. determine. As long as the determined defrosting timing and defrosting mode optimize the defrosting control strategy of the air conditioner.
- the first preset duration is preferably a duration of not less than 50 minutes
- the second preset duration is preferably a duration of no more than 5 minutes.
- the first preset duration is 60 min
- the second preset duration is 5 min.
- Fig. 3 is a second schematic diagram of the defrosting control method of the air conditioner of the present invention.
- the air conditioner defrosting control method of the present invention may further include a step S400, which is mainly a priority switching strategy determined by taking into account the user experience and heating efficiency of the air conditioner.
- Step S400 further includes:
- S402. Determine whether the defrosting mode entered by the air conditioners in the two consecutive cycles is the bypass defrosting mode; and S403, whether the condition that the air conditioner enters the bypass defrosting mode in the two consecutive cycles is satisfying the determining condition (1) Two of the 2, 3);
- the defrosting mode entered by the air conditioner for two consecutive cycles is the bypass defrosting mode, and each time the air conditioner enters the bypass defrosting mode, the conditions satisfying the judgment condition (1, 2, 3) are satisfied. In both cases, it is determined that the defrosting is relatively serious.
- the defrosting mode that causes the air conditioner to enter according to the foregoing steps S100-S300 is bypass defrosting or reverse cycle defrosting. The mode causes the air conditioner to perform a reverse cycle defrost.
- step S403 determines whether to execute the priority switching policy in the order of performing step S403 after performing step S402.
- step S402 and step S403 are reversed, or step S402 and step S403 are performed at the same time, it is also possible to determine whether to execute the priority switching policy, and therefore also belongs to the protection scope of the present invention.
- the defrosting of the air conditioner can be ensured completely. Specifically, since the defrosting efficiency of the bypass defrosting is low, the operating condition of the air conditioner corresponding to the multiple bypass defrosting is in a state close to the severe frosting, and the heating efficiency is deteriorated. The heating cycle of the time can neither provide sufficient heat to the room nor enough heat to be distributed to the bypass circuit. Therefore, the frost should be thoroughly removed by reverse cycle defrosting to quickly improve the heating efficiency of the air conditioner. .
- step S400 is specifically: if the condition that the air conditioner enters the second defrost mode twice in succession is that two of the conditions (1, 2, 3) are satisfied, Put the air conditioner into the first defrost mode.
- the judgment condition 3 that is, the main mechanism of "the frequency of the compressor meets the preset condition" is: during the high frequency band (such as above 70hz), the evaporation temperature in the heating circuit of the air conditioner is low, and it is easy to frost. . Therefore, as long as the compressor can be avoided in the high frequency band for a long time.
- the judgment condition 3 is that the working frequency of the compressor is not lower than the preset frequency for longer than the third preset time length.
- the judgment condition 3 is that the average value of the operating frequencies of the compressors collected periodically (eg, every 15 s) is not lower than the preset frequency.
- the third preset duration and the preset frequency may also be determined in any reasonable manner, such as based on historical usage data of the air conditioner, simulation data, or determined by inventors' repeated experiments and comparisons. As long as the determined defrosting timing and defrosting mode optimize the defrosting control strategy of the air conditioner.
- the preset frequency is preferably a frequency of not less than 70 hz.
- the first preset duration is 60 min and the second preset duration is 5 min, and the preset frequency is 70 Hz.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Provided are an air conditioner and a defrosting control method therefor. The defrosting control method comprises: acquiring a duration of a previous defrosting operation and a duration of a heating operation of an air conditioner and a frequency of a compressor after completion of the defrosting operation (S100); and when a determination criterion 1, a determination criterion 2 and a determination criterion 3 are all satisfied, causing the air conditioner to enter a first defrosting mode (S301). The defrosting control method optimizes a defrosting control mechanism of an air conditioner.
Description
本发明涉及空调领域，具体涉及一种空调器及其除霜控制方法。The invention relates to the field of air conditioners, and in particular to an air conditioner and a defrosting control method thereof.
空调器(如家用空调器)作为一种能够调节室内环境温度的设备，其工作原理为：通过制冷剂在在循环管路之间通过高压/低压/气态/液态的状态转换来使得室内环境温度降低或者升高，即从空调室内机的角度来看，使空调器处于制冷或者制热循环。在空调器运行在制热循环的情形下，空调室外机作为蒸发器(低压液态的制冷剂在蒸发器内吸热蒸发后变为低压气态)而空调室内机作为冷凝器。当蒸发温度低于外界环境温度条件下的露点温度的时候，空调室外机的盘管便开始结霜，当室外机盘管外壁的霜结到一定的厚度后，空调器的制热能力会越来越低直至恶化。因此为了保证空调器的制热效果，必须对空调室外机进行除霜。An air conditioner (such as a household air conditioner) is a device capable of adjusting the temperature of an indoor environment. The working principle is that the indoor ambient temperature is changed by a state of high pressure/low pressure/gaseous/liquid state between the circulating pipes through the refrigerant. Decrease or increase, that is, from the perspective of the air conditioner indoor unit, the air conditioner is placed in a cooling or heating cycle. In the case where the air conditioner is operated in the heating cycle, the air conditioner outdoor unit functions as an evaporator (the low-pressure liquid refrigerant is heated to evaporate in the evaporator and becomes a low-pressure gas state) and the air-conditioning indoor unit functions as a condenser. When the evaporation temperature is lower than the dew point temperature under the ambient temperature conditions, the coil of the outdoor unit of the air conditioner starts to frost. When the frost on the outer wall of the outdoor unit coil reaches a certain thickness, the heating capacity of the air conditioner will be higher. The lower the level, the worse. Therefore, in order to ensure the heating effect of the air conditioner, the air conditioner outdoor unit must be defrosted.
为解决空调器的结霜问题，现有技术中一般采用逆循环除霜(使四通阀换向，在除霜期间使空调室内机作为蒸发器而将空调室外机作为冷凝器，即使空调器运行在制冷循环的停机除霜))或者旁通除霜(从压缩机的高压端引出单独的旁通支路至空调室外机，即使空调器仍然运行在制热循环的不停机除霜)的方式对空调室外机进行除霜。其中，采用逆循环除霜的方式对空调室外机进行除霜时，由于空调器运行在制冷循环，因此室内的环境温度必然会明显地下降，也就是说不可避免地会牺牲用户体验，不过，逆循环除霜的方式具有较高的除霜效率。而采用旁通除霜方式对空调室外机进行除霜时时，只需要将一部分冷媒旁通至空调室外机内即可，即空调器仍然维持在制热工况，因此室内的环境温度不会明显地下降，也就是说在除霜的过程中能够较好地保证用户体验。但是，旁通除霜的方式的除霜效率相对较低，即需要较长的除霜时间，而较长时间的旁通除霜会恶化整个制热循环的效率，因此只适合在结霜不严重的情形下对空调室外机进行除霜。In order to solve the frosting problem of the air conditioner, reverse cycle defrosting is generally used in the prior art (the four-way valve is reversed, and the air conditioner indoor unit is used as an evaporator during the defrosting, and the air conditioner outdoor unit is used as a condenser, even if the air conditioner Running defrosting in the refrigeration cycle) or bypass defrosting (extracting a separate bypass branch from the high pressure side of the compressor to the air conditioner outdoor unit, even if the air conditioner is still operating in the heating cycle without stopping defrosting) The method is to defrost the air conditioner outdoor unit. Among them, when the air-conditioner outdoor unit is defrosted by the reverse circulation defrosting method, since the air conditioner operates in the refrigeration cycle, the indoor environmental temperature is inevitably lowered, that is, the user experience is inevitably sacrificed, however, The reverse cycle defrosting method has a high defrosting efficiency. When the defrosting method is used to defrosting the outdoor unit of the air conditioner, only a part of the refrigerant needs to be bypassed to the outdoor unit of the air conditioner, that is, the air conditioner is still maintained in the heating condition, so the indoor temperature in the room is not obvious. The ground is lowered, that is to say, the user experience can be better ensured during the defrosting process. However, the defrosting efficiency of the bypass defrosting method is relatively low, that is, a longer defrosting time is required, and the longer-term bypass defrosting deteriorates the efficiency of the entire heating cycle, so it is only suitable for frosting. Defrost the outdoor unit of the air conditioner in severe cases.
也就是说，在采用设定的除霜方式的情形下，必然无法回避该种除霜方式本身存在的技术缺陷。作为改进，可以采用两种方式相切换的除霜方式。如公开号为(CN 105910237A)的发明专利公开了一种空调器除霜控制方法及装置，该方案采用的即是第一除霜模式(旁通除霜)和第二除霜模式(逆循环除霜)相切换的除霜方式。除霜控制方法是通过结合运行时长和室外换热器的温度两个参数来判断是否进行除霜以及除霜模式的切换。具体而言，当运行时长大于预设时长且室外换热器的温度大于或者等于预设温度时，开启旁通单向阀，以控制空调器进入第一除霜模式进行除霜；当运行时长大于预设时长且室外换热器的温度小于预设温度时，控制空调器切换至制冷模式运行，以进入第二除霜模式进行除霜。并且，预设温度是根据室外环境温度设置，且具体的值与室外环境温度成正比。That is to say, in the case of adopting the set defrosting mode, it is inevitable that the technical defects existing in the defrosting mode itself cannot be avoided. As an improvement, a defrosting mode in which two modes are switched can be employed. The invention patent disclosed in the publication (CN 105910237 A) discloses an air conditioner defrosting control method and apparatus, which adopts a first defrosting mode (bypass defrosting) and a second defrosting mode (reverse cycle) Defrost) phase switching defrosting method. The defrosting control method determines whether to perform defrosting and switching of the defrosting mode by combining two parameters of the running time and the temperature of the outdoor heat exchanger. Specifically, when the running time is greater than the preset duration and the temperature of the outdoor heat exchanger is greater than or equal to the preset temperature, the bypass check valve is opened to control the air conditioner to enter the first defrost mode for defrosting; When the temperature of the outdoor heat exchanger is greater than the preset temperature, the control air conditioner switches to the cooling mode operation to enter the second defrost mode for defrosting. Moreover, the preset temperature is set according to the outdoor ambient temperature, and the specific value is proportional to the outdoor ambient temperature.
但是，上述现有的除霜切换方案存在如下缺陷：在由于外部环境原因或者由于空调运行时间过长、上次化霜不干净等内部原因导致结霜很严重的情形下，利用旁通除霜的方式很难在短时间内化掉结霜。而且由于旁通除霜实际上是缺少蒸发器的循环，因此长时间运行必然会导致吸气温度和排气温度很低，进而导致空调器产生的热量对于继续化霜和制热效率均不能保证，因此当达到某些条件时候要进行逆循环除霜。为了尽可能地避免假除霜(满足除霜条件，但此时的机组实际并没有结霜)以及除霜过度(满足继续除霜的条件，但此时的机组实际已经完成除霜)等现象的出现，选择恰当的除霜时机和合理的除霜方式显得至关重要。相应地，本领域需要一种新的除霜控制方法来解决上述问题。However, the above conventional defrosting switching scheme has the following drawbacks: the use of bypass defrosting in the case where the frosting is severe due to external environment reasons or due to internal conditions such as excessive air conditioning running time and unclean defrosting last time. The way is difficult to get rid of frost in a short time. Moreover, since the bypass defrosting is actually a cycle lacking the evaporator, the long-term operation will inevitably result in a very low intake temperature and exhaust temperature, and thus the heat generated by the air conditioner cannot guarantee the defrosting and heating efficiency. Therefore, reverse cycle defrost is required when certain conditions are met. In order to avoid false defrosting as much as possible (to meet the defrosting conditions, but the unit does not actually frost), and excessive defrosting (to meet the conditions of continued defrosting, but the unit has actually completed defrosting) The emergence of the right defrosting timing and reasonable defrosting methods is crucial. Accordingly, there is a need in the art for a new defrosting control method to solve the above problems.
发明内容Summary of the invention
为了解决现有技术中的上述问题，即为了解决现有的空调器除霜控制方法存在的不能够在需要除霜的时机获得恰当的除霜模式的问题，本发明提供了一种空调器除霜控制方法，旨在优化空调器的除霜控制机制。该空调器除霜控制方法包括如下步骤：获取上一次除霜完成之后所述空调器处于制热工况的制热运行时长；获取所述空调器上一次除霜的除霜运行时长；获取上一次除霜完成之后所述空调器的压缩机的频率；在判断条件1、判断条件2以及判断条件3均满足的情形下，使所述空调器进入第一除霜模式；其中，所述判断条件1为所述制热运行时长大于 第一预设时长，所述判断条件2为所述除霜运行时长小于第二预设时长，所述判断条件3为所述压缩机的频率满足预设条件。In order to solve the above problems in the prior art, in order to solve the problem that the existing air conditioner defrosting control method cannot obtain an appropriate defrosting mode at the timing when defrosting is required, the present invention provides an air conditioner in addition to The frost control method is designed to optimize the defrosting control mechanism of the air conditioner. The defrosting control method of the air conditioner includes the following steps: obtaining a heating operation duration of the air conditioner in a heating condition after the last defrosting is completed; acquiring a defrosting operation duration of the last defrosting of the air conditioner; acquiring a frequency of the compressor of the air conditioner after completion of one defrosting; and in a case where the judgment condition 1, the judgment condition 2, and the judgment condition 3 are satisfied, the air conditioner is caused to enter a first defrosting mode; wherein the judgment Condition 1 is that the heating operation duration is greater than a first preset duration, the determination condition 2 is that the defrost operation duration is less than a second preset duration, and the determination condition 3 is that the compressor frequency meets a preset condition.
在上述除霜控制方法的优选技术方案中，在所述判断条件1、所述判断条件2以及所述判断条件3中只有其中一个或者其中两个条件满足的情形下，使所述空调器进入第二除霜模式。In a preferred technical solution of the above defrosting control method, in a case where only one or two of the determination condition 1, the determination condition 2, and the determination condition 3 are satisfied, the air conditioner is caused to enter Second defrost mode.
在上述除霜控制方法的优选技术方案中，该方法包括如下步骤：记录使所述空调器进入第二除霜模式的次数和条件；基于进入第二除霜模式的次数和条件，判定是否使所述空调器进入第一除霜模式。In a preferred technical solution of the above defrosting control method, the method includes the steps of: recording the number and conditions of entering the air conditioner into the second defrosting mode; determining whether to make based on the number and conditions of entering the second defrosting mode The air conditioner enters a first defrost mode.
在上述除霜控制方法的优选技术方案中，“基于进入第二除霜模式的次数和所述条件，判定是否使所述空调器进入第一除霜模式”的步骤具体包括：若连续两次使所述空调器进入第二除霜模式的条件为“所述判断条件1、所述判断条件2以及所述判断条件3中的其中两个条件满足”的情形下，使所述空调器进入第一除霜模式。In a preferred technical solution of the above defrosting control method, the step of determining whether to cause the air conditioner to enter the first defrosting mode based on the number of times of entering the second defrosting mode and the condition includes: When the condition that the air conditioner enters the second defrosting mode is "the determination condition 1, the determination condition 2, and two of the determination conditions 3 are satisfied", the air conditioner is caused to enter The first defrost mode.
在上述除霜控制方法的优选技术方案中，“所述压缩机的频率满足预设条件”具体为：所述压缩机的工作频率处于不低于预设频率的时长大于第三预设时长。In a preferred technical solution of the above defrosting control method, the “the frequency of the compressor satisfies the preset condition” is specifically: the working frequency of the compressor is not lower than the preset frequency for a longer period than the third preset time.
在上述除霜控制方法的优选技术方案中，“所述压缩机的频率满足预设条件”具体为：定期采集到的所述压缩机的工作频率平均值不低于预设频率。In a preferred technical solution of the above defrosting control method, the “the frequency of the compressor satisfies the preset condition” is specifically: the average operating frequency of the compressor that is periodically collected is not lower than the preset frequency.
在上述除霜控制方法的优选技术方案中，所述第一预设时长为不小于50min的时长，所述第二预设时长为不大于5min的时长。In a preferred technical solution of the defrosting control method, the first preset duration is a duration of not less than 50 min, and the second preset duration is a duration of no more than 5 min.
在上述除霜控制方法的优选技术方案中，所述第一除霜模式为逆循环除霜模式，所述第二除霜模式为旁通除霜模式。In a preferred embodiment of the above defrosting control method, the first defrosting mode is a reverse cycle defrosting mode, and the second defrosting mode is a bypass defrosting mode.
本发明还提供了一种空调器，该空调器包括压缩机、空调室外机、空调室内机、节流机构和四通阀，所述压缩机、所述空调室外机和所述空调室内机依次相连形成闭环，所述节流机构设置于所述空调室外机和所述空调室内机之间，所述四通阀能够通过换向的方式使所述空调器处于制冷循环或者制热循环，其特征在于，所述空调器还包括：旁通支路，其设置于所述压缩机和所述空调室外机之间，且所述旁通支路上设置有旁通单向阀；控制部，其用于：根据获取的上一次除霜完成之后所述空调器处于制热工况的制热运行时长、所述空调器上一次除霜的除霜运行时长以及上一次除霜完成之后所述空调器的压缩机的频率，确 定判断条件1、判断条件2以及判断条件3的满足个数，其中，所述判断条件1为所述制热运行时长大于第一预设时长；判断条件2为所述除霜运行时长小于第二预设时长；判断条件3为所述压缩机的频率满足预设条件；在所述判断条件1、所述判断条件2以及所述判断条件3均满足的情形下，使所述空调器进入第一除霜模式；在所述判断条件1、所述判断条件2以及所述判断条件3中只有其中一个或者其中两个条件满足的情形下，使所述空调器进入第二除霜模式。The present invention also provides an air conditioner including a compressor, an air conditioner outdoor unit, an air conditioner indoor unit, a throttle mechanism, and a four-way valve, wherein the compressor, the air conditioner outdoor unit, and the air conditioner indoor unit are in turn Connected to form a closed loop, the throttle mechanism is disposed between the air conditioner outdoor unit and the air conditioner indoor unit, and the four-way valve can be in a reversing manner to cause the air conditioner to be in a refrigeration cycle or a heating cycle. The air conditioner further includes: a bypass branch disposed between the compressor and the air conditioner outdoor unit, and the bypass branch is provided with a bypass check valve; a control portion And used for: the heating operation duration of the air conditioner in the heating condition after the completion of the last defrosting obtained, the defrosting operation duration of the last defrosting of the air conditioner, and the air conditioning after the last defrosting is completed The frequency of the compressor of the device determines the number of the determination condition 1, the determination condition 2, and the determination condition 3, wherein the determination condition 1 is that the heating operation duration is greater than the first preset duration; the determination condition 2 is Comment The operation duration is less than the second preset duration; the determination condition 3 is that the frequency of the compressor satisfies the preset condition; and in the case that the determination condition 1, the determination condition 2, and the determination condition 3 are satisfied, The air conditioner enters a first defrost mode; in a case where only one or two of the judgment condition 1, the judgment condition 2, and the judgment condition 3 are satisfied, the air conditioner is brought into the second Defrost mode.
在上述空调器的优选技术方案中，所述第一除霜模式为逆循环除霜模式，所述第二除霜模式为旁通除霜模式。In a preferred embodiment of the air conditioner, the first defrost mode is a reverse cycle defrost mode, and the second defrost mode is a bypass defrost mode.
本发明的除霜控制方法中，在空调器处于制热循环(非旁通除霜)期间，根据判断条件(1、2、3)确定出空调器的除霜时机和除霜方式，优化了空调器的除霜控制机制，即通过本发明的除霜控制方法能够在恰当的除霜时机确定出合理的除霜方式。In the defrosting control method of the present invention, during the heating cycle (non-bypass defrosting) of the air conditioner, the defrosting timing and the defrosting mode of the air conditioner are determined according to the judgment conditions (1, 2, 3), and optimized. The defrosting control mechanism of the air conditioner, that is, the defrosting control method of the present invention, can determine a reasonable defrosting mode at an appropriate defrosting timing.
根据下面参考附图对示例性实施例的详细说明，本发明的其它特征及方面将变得清楚。Further features and aspects of the present invention will become apparent from the Detailed Description of the Drawing.
图1是空调器的结构示意图(在压缩机和空调室外机之间设置旁通支路，可采用逆循环除霜或者旁通除霜)；1 is a schematic structural view of an air conditioner (a bypass branch is provided between a compressor and an outdoor unit of an air conditioner, and reverse cycle defrosting or bypass defrosting can be employed);
图2是本发明的空调器除霜控制方法的流程示意图一；2 is a schematic flow chart 1 of a method for controlling defrosting of an air conditioner according to the present invention;
图3是本发明的空调器除霜控制方法的流程示意图二。3 is a second schematic diagram of the flow of the defrosting control method of the air conditioner of the present invention.
附图标记列表List of reference signs
1、压缩机；2、空调室内机；3、空调室外机；4、四通阀；5、节流阀；6、旁通支路；61、旁通单向阀。1, compressor; 2, air conditioning indoor unit; 3, air conditioning outdoor unit; 4, four-way valve; 5, throttle valve; 6, bypass branch; 61, bypass check valve.
以下将参考附图详细说明本发明的各种示例性实施例、特征和方面。附图中相同的附图标记表示功能相同或相似的元件。尽管在附图中示出了实施例的各种方面，但是除非特别指出，不必按比例绘制附图。在这里专用的词“示例性”意为“用作例子、实施例或说明性”。这里作为“示例性”所说明的任何实施例不必解释为优于或好于其它实 施例。并且，本领域技术人员应当理解的是，这些实施方式仅仅用于解释本发明的技术原理，并非旨在限制本发明的保护范围。Various exemplary embodiments, features, and aspects of the invention are described in detail below with reference to the drawings. The same reference numerals in the drawings denote the same or similar elements. Although the various aspects of the embodiments are illustrated in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated. The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustrative." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Also, those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the scope of the present invention.
需要说明的是，在本发明的描述中，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。另外，为了更好地说明本发明，在下文的具体实施方式中给出了众多的具体细节。本领域技术人员应当理解，没有某些具体细节，本发明同样可以实施。在一些实例中，对于本领域技术人员熟知的方法、手段、元件和电路未作详细描述，以便于凸显本发明的主旨。It should be noted that in the description of the present invention, the terms "first", "second", and "third" are used for descriptive purposes only, and are not to be construed as indicating or implying relative importance. In addition, numerous specific details are set forth in the Detailed Description of the <RTIgt; Those skilled in the art will appreciate that the invention may be practiced without some specific details. In some instances, methods, means, components, and circuits that are well known to those skilled in the art are not described in detail in order to facilitate the invention.
首先参照图1，图1是本发明空调器的结构示意图。如图1所示，空调器主要包括压缩机1、空调室内机2、空调室外机3、四通阀4、节流机构(如节流阀5)和旁通支路6。其中，压缩机1、空调室内机2和空调室外机3依次相连形成闭环。通过四通阀4切换制冷剂在闭环中的流向，可以使空调器处于制冷或者制热循环。在空调器处于制热循环的情形下，通过切换四通阀4的方式使空调器转为制冷循环的情形下，即可实现对空调室外机3的逆循环除霜。节流阀5设置于空调室内机2和空调室外机3之间，主要用于调节制冷剂的流量。旁通支路6被配置于压缩机1的排气口和空调室外机3的进风口之间，且旁通支路6中设置有能够使旁通支路6在导通状态和非导通状态之间切换的旁通单向阀61，在旁通支路6导通的情形下，即可对空调室外机3进行旁通除霜。Referring first to Figure 1, Figure 1 is a schematic view of the structure of an air conditioner of the present invention. As shown in FIG. 1, the air conditioner mainly includes a compressor 1, an air conditioner indoor unit 2, an air conditioner outdoor unit 3, a four-way valve 4, a throttle mechanism (such as a throttle valve 5), and a bypass branch 6. Among them, the compressor 1, the air conditioner indoor unit 2, and the air conditioner outdoor unit 3 are sequentially connected to form a closed loop. By switching the flow of the refrigerant in the closed loop through the four-way valve 4, the air conditioner can be placed in a cooling or heating cycle. In the case where the air conditioner is in the heating cycle, the reverse cycle defrosting of the air conditioner outdoor unit 3 can be realized in the case where the air conditioner is switched to the refrigeration cycle by switching the four-way valve 4. The throttle valve 5 is provided between the air conditioning indoor unit 2 and the air conditioner outdoor unit 3, and is mainly used to adjust the flow rate of the refrigerant. The bypass branch 6 is disposed between the exhaust port of the compressor 1 and the air inlet of the air conditioner outdoor unit 3, and the bypass branch 6 is provided with the bypass branch 6 in an on state and non-conducting. The bypass check valve 61 that switches between the states can perform bypass defrosting of the air conditioner outdoor unit 3 when the bypass branch 6 is turned on.
此外，空调器还设置有控制部(图中未示出)，本发明中主要描述控制部在除霜方面的功能，即控制部主要用于使空调器在恰当的除霜时机能够获得合理的除霜方式。具体而言，控制部一方面能够根据预设的判定条件，使空调器在空调室外机的室外机盘管需要除霜的情形下使进入除霜模式，在除霜结束之后退出除霜模式。具体而言，根据预设的条件或者条件组合，使旁通支路6的旁通单向阀61导通以进行旁通除霜，或者使四通阀4换向以进行逆循环除霜。其中，判定条件的限定的合理与否，直接决定了除霜控制方法是否能够确定出恰当的除霜时机和合理的除霜方式。而恰当的除霜时机能够保证空调室外机3的室外机盘管在结霜的情形下能够获得及时的除霜策略，从而避免了由于室外机盘管结霜导致的制热效率下降甚至恶化的现象，即保证了空调器的运行可靠性。而合理的除霜方式则能够在除霜可靠性和用户体验之间取得平衡，因此可以在最大程度上优化空调器的使用性能。In addition, the air conditioner is further provided with a control portion (not shown), and the present invention mainly describes the function of the control portion in defrosting, that is, the control portion is mainly used to enable the air conditioner to obtain reasonable timing at an appropriate defrosting timing. Defrosting method. Specifically, the control unit can cause the air conditioner to enter the defrosting mode when the outdoor unit coil of the outdoor unit of the air conditioner needs defrosting according to a predetermined determination condition, and exit the defrosting mode after the defrosting ends. Specifically, the bypass check valve 61 of the bypass branch 6 is turned on to perform bypass defrosting according to a preset condition or combination of conditions, or the four-way valve 4 is reversed to perform reverse cycle defrosting. Among them, whether the limitation of the determination condition is reasonable or not directly determines whether the defrosting control method can determine an appropriate defrosting timing and a reasonable defrosting mode. The proper defrosting timing can ensure that the outdoor unit coil of the air conditioner outdoor unit 3 can obtain a timely defrosting strategy in the case of frost formation, thereby avoiding the phenomenon that the heating efficiency is degraded or even deteriorated due to frosting of the outdoor unit coil. , that is to ensure the operational reliability of the air conditioner. A reasonable defrosting method balances the defrosting reliability with the user experience, so that the performance of the air conditioner can be optimized to the greatest extent possible.
在一种具体的实施方式中，控制部主要用于：根据获取的上一次除霜完成之后空调器处于制热工况的制热运行时长、空调器上一次除霜的除霜运行时长以及上一次除霜完成之后空调器的压缩机的频率，确定判断条件1、判断条件2以及判断条件3的满足个数，在判断条件1、判断条件2以及判断条件3均满足的情形下，使空调器进入第一除霜模式。而在判断条件1、判断条件2以及判断条件3中只有其中一个或者其中两个条件满足的情形下，使空调器进入第二除霜模式。其中，判断条件1为制热运行时长大于第一预设时长；判断条件2为除霜运行时长小于第二预设时长；判断条件3为压缩机的频率满足预设条件。In a specific embodiment, the control unit is mainly configured to: according to the obtained heating operation time after the last defrosting is completed, the defrosting operation time of the air conditioner in the heating operation, and the defrosting operation time of the last defrosting of the air conditioner The frequency of the compressor of the air conditioner after completion of the defrosting is determined, and the number of determination conditions 1, the determination condition 2, and the determination condition 3 are determined. When the determination condition 1, the determination condition 2, and the determination condition 3 are satisfied, the air conditioner is caused. The device enters the first defrost mode. On the other hand, in the case where only one or both of the judgment condition 1, the judgment condition 2, and the judgment condition 3 are satisfied, the air conditioner is caused to enter the second defrost mode. The judgment condition 1 is that the heating operation duration is greater than the first preset duration; the determination condition 2 is that the defrost operation duration is less than the second preset duration; and the determination condition 3 is that the compressor frequency satisfies the preset condition.
旁通除霜和逆循环除霜相结合的物理意义在于，在空调器处于制热循环期间，在结霜不严重或者不十分严重的情形下，使压缩机的排气(高压端)大部分直接输送到空调室内机(冷凝器)的入口，而少量排气则通过旁通支路6进入空调室外机3，使室外机盘管的结霜可以在较短时间内被及时地化掉。而在由于环境气候以及天气等外部原因以及空调器制热循环运行时间过长以及上次化霜不干净等内部原因导致结霜严重或者非常严重的情形下，利用旁通除霜的方式在短时间内很难或者不能将既存的结霜及时而可靠地化掉。具体而言，旁通除霜本质上是缺少蒸发器的制热循环，因此长时间运行将会导致压缩机的吸气温度和排气温度很低，产生的热量不足以继续进行化霜或者制热，因此当达到设定的上限条件时要进行逆循环除霜，即以舍弃用户体验的方式在短时间内迅速化霜的方式，以换取良性的制热循环。The physical meaning of the combination of bypass defrosting and reverse cycle defrosting is that during the heating cycle of the air conditioner, most of the exhaust (high pressure end) of the compressor is made in the case where the frosting is not serious or not very serious. It is directly sent to the inlet of the air conditioner indoor unit (condenser), and a small amount of exhaust gas enters the air conditioner outdoor unit 3 through the bypass branch 6, so that the frost of the outdoor unit coil can be timely eliminated in a short time. In the case of severe or severe frosting due to external factors such as environmental climate and weather, and the internal operation of the air conditioner heating cycle is too long and the last defrosting is not clean, the use of bypass defrosting is short. It is difficult or impossible to remove the existing frost in a timely and reliable manner. Specifically, bypass defrosting is essentially a heating cycle that lacks an evaporator, so long-term operation will result in a low suction and exhaust temperature of the compressor, and the heat generated will not be sufficient to continue defrosting or manufacturing. Heat, so when the set upper limit condition is reached, reverse cycle defrosting is performed, that is, the way of defrosting quickly in a short time in a manner that discards the user experience, in exchange for a benign heating cycle.
参照图2，图2是本发明的空调器除霜控制方法的流程示意图一。如图2所示，该方法主要包括如下步骤：Referring to Fig. 2, Fig. 2 is a flow chart 1 of the defrosting control method for an air conditioner of the present invention. As shown in FIG. 2, the method mainly includes the following steps:
S100、获取上一次除霜完成之后空调器处于制热工况的制热运行时长、空调器上一次除霜的除霜运行时长以及上一次除霜完成之后空调器的压缩机的频率；S100. Obtain a heating operation duration of the air conditioner in a heating condition after the last defrosting is completed, a defrosting operation duration of the last defrosting of the air conditioner, and a frequency of a compressor of the air conditioner after the last defrosting is completed;
S200、根据获取的上述参数确定空调器的工况是否满足以下判断条件：其中，判断条件1为制热运行时长大于第一预设时长，判断条件2为除霜运行时长小于第二预设时长，判断条件3为压缩机的频率满足预设条件；S200: Determine, according to the obtained parameters, whether the working condition of the air conditioner satisfies the following judgment condition: wherein the judgment condition 1 is that the heating operation duration is greater than the first preset duration, and the determination condition 2 is that the defrost operation duration is less than the second preset duration Judging condition 3 is that the frequency of the compressor satisfies a preset condition;
S300、根据判断条件(1、2、3)的满足情况，使空调仍然处于当前的制热工况(非旁通除霜)不变，或者以合理的除霜模式进行除霜。具体而言，步骤S300具体包括：S300: According to the satisfaction condition of the judgment condition (1, 2, 3), the air conditioner is still in the current heating condition (non-bypass defrosting), or the defrosting is performed in a reasonable defrosting mode. Specifically, step S300 specifically includes:
S301、在判断条件(1、2、3)均满足的情形下，使空调器进入第一除霜模式；S301. If the determination conditions (1, 2, and 3) are satisfied, the air conditioner is caused to enter the first defrost mode;
S302、而在判断条件(1、2、3)中只有其中一个或者其中两个条件(附图中的否的含义)满足的情形下，使空调器进入第二除霜模式。S302, and in the case where only one of the two or two of the conditions (1, 2, 3) is satisfied (the meaning of the no in the drawing) is satisfied, the air conditioner is caused to enter the second defrost mode.
在本实施例中，第一除霜模式为逆循环除霜模式，第二除霜模式为旁通除霜模式。In this embodiment, the first defrost mode is a reverse cycle defrost mode, and the second defrost mode is a bypass defrost mode.
可以看出，本发明通过结合3个参数形成的3个判断条件，在3个判断条件均满足的条件下，即可得出结霜严重的结论，因而通过逆循环除霜的方式使空调器得以迅速除霜，即使空调器在切换为制冷循环的状态下进行停机除霜，以便将之前累积的结霜彻底清除干净。而在3个判断条件中只有部分满足的情形下，认为结霜不够严重，因此采用旁通除霜的方式进行除霜，即使空调器在仍然可以制热循环的状态下实现不停机除霜。通过在恰当的除霜时机选择合理的除霜方式，优化了空调器的除霜控制策略。It can be seen that the present invention combines the three judgment conditions formed by the three parameters, and under the condition that all the three judgment conditions are satisfied, the conclusion that the frost formation is serious can be obtained, and thus the air conditioner is made by the reverse cycle defrosting method. Quick defrost, even if the air conditioner is switched to the refrigeration cycle to stop defrosting, in order to completely remove the accumulated frost. In the case where only three of the three judgment conditions are satisfied, it is considered that the frosting is not serious enough, so the defrosting is performed by the bypass defrosting method, even if the air conditioner can perform the non-stop defrosting while still being able to perform the heating cycle. The defrosting control strategy of the air conditioner is optimized by selecting a reasonable defrosting mode at the appropriate defrosting timing.
具体而言，当空调器的当前工况满足判断条件1、判断条件2以及判断条件3中的其中一个时，则判定结霜但是不严重，开启旁通单向阀使旁通支路导通，使空调器进入旁通除霜模式。而当空调器的当前工况满足判断条件(1、2)、(1、3)或者(2、3)时，仍然判定结霜但是不严重，开启旁通单向阀使旁通支路导通，使空调器进入第一除霜模式。但是当连续2个周期使空调器进入旁通除霜模式的条件为满足其中两个判断条件的情形下，判定除霜比较严重，使空调器进行一次逆循环除霜。而当空调器的当前工况同时满足判断条件(1、2、3)时，则判定上周期结霜严重，存在化霜不干净的风险，此时直接通过切换四通阀的方式使空调器进入逆循环除霜模式，即以停机除霜的方式将之前累积的结霜彻底清除干净，以改善空调器的制热性能。Specifically, when the current operating condition of the air conditioner satisfies one of the determination condition 1, the determination condition 2, and the determination condition 3, it is determined that the frost is not serious, and the bypass check valve is opened to make the bypass branch conductive. , the air conditioner enters the bypass defrost mode. When the current working condition of the air conditioner satisfies the judgment condition (1, 2), (1, 3) or (2, 3), the frost is still determined but not serious, and the bypass check valve is opened to make the bypass branch guide Pass, the air conditioner enters the first defrost mode. However, when the condition that the air conditioner enters the bypass defrosting mode for two consecutive cycles is that two of the determination conditions are satisfied, it is determined that the defrosting is severe, and the air conditioner performs a reverse cycle defrosting. When the current working condition of the air conditioner satisfies the judgment condition (1, 2, 3) at the same time, it is determined that the upper cycle frost is serious, and there is a risk that the defrosting is not clean. At this time, the air conditioner is directly switched by switching the four-way valve. Entering the reverse cycle defrost mode, the accumulated frost is completely removed by means of shutdown defrosting to improve the heating performance of the air conditioner.
需要说明的是，第一预设时长、第二预设时长以及预设条件可以通过任意合理的方式确定，如基于空调器的历史使用数据、仿真数据或者通过发明人的反复实验和比对来确定。只要确定出的除霜时机和 除霜方式优化了空调器的除霜控制策略即可。如第一预设时长优选为不小于50min的时长，第二预设时长优选为不大于5min的时长。在一种具体的实施方式中，第一预设时长为60min，第二预设时长为5min。It should be noted that the first preset duration, the second preset duration, and the preset condition may be determined by any reasonable manner, such as historical usage data based on the air conditioner, simulation data, or repeated experiments and comparisons by the inventor. determine. As long as the determined defrosting timing and defrosting mode optimize the defrosting control strategy of the air conditioner. For example, the first preset duration is preferably a duration of not less than 50 minutes, and the second preset duration is preferably a duration of no more than 5 minutes. In a specific implementation manner, the first preset duration is 60 min, and the second preset duration is 5 min.
参照图3，图3是本发明的空调器除霜控制方法的流程示意图二。如图3所示，本发明的空调器除霜控制方法还可以包括步骤S400，该步骤主要是兼顾空调器的用户体验和制热效率而确定的优先切换策略。步骤S400进一步包括：Referring to Fig. 3, Fig. 3 is a second schematic diagram of the defrosting control method of the air conditioner of the present invention. As shown in FIG. 3, the air conditioner defrosting control method of the present invention may further include a step S400, which is mainly a priority switching strategy determined by taking into account the user experience and heating efficiency of the air conditioner. Step S400 further includes:
S401、记录使空调器进入旁通除霜模式的次数和条件；并基于进入第二除霜模式的次数和条件，判定是否使空调器进入逆循环除霜模式；S401. Record the number and conditions of the air conditioner entering the bypass defrost mode; and determine whether to cause the air conditioner to enter the reverse cycle defrost mode based on the number and conditions of entering the second defrost mode;
S402、确定连续2个周期空调器进入的除霜模式是否均为旁通除霜模式；以及S403、上述连续2个周期使空调器进入旁通除霜模式的条件是否为满足判断条件(1、2、3)中的其中两个；S402. Determine whether the defrosting mode entered by the air conditioners in the two consecutive cycles is the bypass defrosting mode; and S403, whether the condition that the air conditioner enters the bypass defrosting mode in the two consecutive cycles is satisfying the determining condition (1) Two of the 2, 3);
S404、如果连续2个周期空调器进入的除霜模式均为旁通除霜模式且每次使空调器进入旁通除霜模式的条件均为满足判断条件(1、2、3)中的其中两个的情形，则判定除霜比较严重，此时在下一次需要进入除霜模式时，无论根据前述步骤S100-S300确定的使空调器进入的除霜模式是旁通除霜还是逆循环除霜模式，均使空调器进行一次逆循环除霜。S404. If the defrosting mode entered by the air conditioner for two consecutive cycles is the bypass defrosting mode, and each time the air conditioner enters the bypass defrosting mode, the conditions satisfying the judgment condition (1, 2, 3) are satisfied. In both cases, it is determined that the defrosting is relatively serious. At this time, when the defrosting mode needs to be entered next time, the defrosting mode that causes the air conditioner to enter according to the foregoing steps S100-S300 is bypass defrosting or reverse cycle defrosting. The mode causes the air conditioner to perform a reverse cycle defrost.
需要说明的是，尽管图3的示例是以先执行步骤S402后执行步骤S403的顺序来确定是否执行优先切换策略的。显然，将步骤S402和步骤S403的顺序进行调换，或者同时执行步骤S402和步骤S403，也可以确定出是否执行优先切换策略，因此也属于本发明的保护范围。It should be noted that although the example of FIG. 3 is to determine whether to execute the priority switching policy in the order of performing step S403 after performing step S402. Obviously, if the order of step S402 and step S403 is reversed, or step S402 and step S403 are performed at the same time, it is also possible to determine whether to execute the priority switching policy, and therefore also belongs to the protection scope of the present invention.
可以看出，通过这样的强制性设置，可以保证空调器除霜彻底。具体而言，由于旁通除霜的除霜效率较低，在多次旁通除霜对应的空调器的工况均处于接近结霜严重的工况之后，会产生制热效率恶化的现象，此时的制热循环既不能够提供给室内足够的热量，也不足以分配给旁通回路足够的热量，因此应当通过逆循环除霜的方式将霜彻底清除干净，以迅速改善空调器的制热效率。It can be seen that through such a mandatory setting, the defrosting of the air conditioner can be ensured completely. Specifically, since the defrosting efficiency of the bypass defrosting is low, the operating condition of the air conditioner corresponding to the multiple bypass defrosting is in a state close to the severe frosting, and the heating efficiency is deteriorated. The heating cycle of the time can neither provide sufficient heat to the room nor enough heat to be distributed to the bypass circuit. Therefore, the frost should be thoroughly removed by reverse cycle defrosting to quickly improve the heating efficiency of the air conditioner. .
在一种可能的实施方式中，步骤S400具体为：若连续两次使空调器进入第二除霜模式的条件为判断条件(1、2、3)中的其中两个条件满足的情形下，使空调器进入第一除霜模式。In a possible implementation, step S400 is specifically: if the condition that the air conditioner enters the second defrost mode twice in succession is that two of the conditions (1, 2, 3) are satisfied, Put the air conditioner into the first defrost mode.
设置判断条件3，即“压缩机的频率满足预设条件”的主要机理为：变频压缩机运行在高频段(如70hz以上)期间，空调器的制热回路中的蒸发温度低，容易结霜。因此，只要能避免使压缩机长期处于高频段即可。举例而言，在一种实施方式中，判断条件3为：压缩机的工作频率处于不低于预设频率的时长大于第三预设时长。在另一种实施方式中，判断条件3为：定期(如每隔15s)采集到的压缩机的工作频率的平均值不低于预设频率。Set the judgment condition 3, that is, the main mechanism of "the frequency of the compressor meets the preset condition" is: during the high frequency band (such as above 70hz), the evaporation temperature in the heating circuit of the air conditioner is low, and it is easy to frost. . Therefore, as long as the compressor can be avoided in the high frequency band for a long time. For example, in an embodiment, the judgment condition 3 is that the working frequency of the compressor is not lower than the preset frequency for longer than the third preset time length. In another embodiment, the judgment condition 3 is that the average value of the operating frequencies of the compressors collected periodically (eg, every 15 s) is not lower than the preset frequency.
需要说明的是，第三预设时长以及预设频率也可以通过任意合理的方式确定，如基于空调器的历史使用数据、仿真数据或者通过发明人的反复实验和比对来确定。只要确定出的除霜时机和除霜方式优化了空调器的除霜控制策略即可。如预设频率优选为不小于70hz的频率。如在一种具体的实施方式中，同上文的第一预设时长为60min以及第二预设时长为5min相组合，预设频率为70Hz。It should be noted that the third preset duration and the preset frequency may also be determined in any reasonable manner, such as based on historical usage data of the air conditioner, simulation data, or determined by inventors' repeated experiments and comparisons. As long as the determined defrosting timing and defrosting mode optimize the defrosting control strategy of the air conditioner. For example, the preset frequency is preferably a frequency of not less than 70 hz. As in a specific embodiment, the first preset duration is 60 min and the second preset duration is 5 min, and the preset frequency is 70 Hz.
至此，已经结合附图所示的优选实施方式描述了本发明的技术方案，但是，本领域技术人员容易理解的是，本发明的保护范围显然不局限于这些具体实施方式。在不偏离本发明的原理的前提下，本领域技术人员可以对相关技术特征作出等同的更改或替换，这些更改或替换之后的技术方案都将落入本发明的保护范围之内。Heretofore, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the drawings, but it is obvious to those skilled in the art that the scope of the present invention is obviously not limited to the specific embodiments. Those skilled in the art can make equivalent changes or substitutions to the related technical features without departing from the principles of the present invention, and the technical solutions after the modifications or replacements fall within the scope of the present invention.
Claims (10)
- 一种空调器除霜控制方法，其特征在于，该方法包括如下步骤：An air conditioner defrosting control method, characterized in that the method comprises the following steps:获取上一次除霜完成之后所述空调器处于制热工况的制热运行时长；Obtaining the heating operation time of the air conditioner in the heating condition after the last defrosting is completed;获取所述空调器上一次除霜的除霜运行时长；Obtaining a defrosting operation duration of the last defrosting of the air conditioner;获取上一次除霜完成之后所述空调器的压缩机的频率；Obtaining the frequency of the compressor of the air conditioner after the last defrosting is completed;在判断条件1、判断条件2以及判断条件3均满足的情形下，使所述空调器进入第一除霜模式；When the determination condition 1, the determination condition 2, and the determination condition 3 are both satisfied, the air conditioner is caused to enter the first defrost mode;其中，所述判断条件1为所述制热运行时长大于第一预设时长，所述判断条件2为所述除霜运行时长小于第二预设时长，所述判断条件3为所述压缩机的频率满足预设条件。The determining condition 1 is that the heating operation duration is greater than a first preset duration, the determining condition 2 is that the defrost operation duration is less than a second preset duration, and the determining condition 3 is the compressor The frequency meets the preset conditions.
- 根据权利要求1所述的空调器除霜控制方法，其特征在于，在所述判断条件1、所述判断条件2以及所述判断条件3中只有其中一个或者其中两个条件满足的情形下，使所述空调器进入第二除霜模式。The defrosting control method for an air conditioner according to claim 1, wherein in a case where only one or both of the determination condition 1, the determination condition 2, and the determination condition 3 are satisfied, The air conditioner is brought into a second defrost mode.
- 根据权利要求2所述的空调器除霜控制方法，其特征在于，该方法包括如下步骤：The defrosting control method for an air conditioner according to claim 2, wherein the method comprises the following steps:记录使所述空调器进入第二除霜模式的次数和条件；Recording the number and conditions of entering the air conditioner into the second defrost mode;基于进入第二除霜模式的次数和条件，判定是否使所述空调器进入第一除霜模式。Based on the number and conditions of entering the second defrost mode, it is determined whether the air conditioner is caused to enter the first defrost mode.
- 根据权利要求3所述的空调器除霜控制方法，其特征在于，“基于进入第二除霜模式的次数和条件，判定是否使所述空调器进入第一除霜模式”的步骤具体包括：The defrosting control method for an air conditioner according to claim 3, wherein the step of: determining whether to cause the air conditioner to enter the first defrosting mode based on the number and conditions of entering the second defrosting mode comprises:若连续两次使所述空调器进入第二除霜模式的条件为“所述判断条件1、所述判断条件2以及所述判断条件3中的其中两个条件满足”的情形下，使所述空调器进入第一除霜模式。If the condition that the air conditioner enters the second defrosting mode twice in succession is "the determination condition 1, the determination condition 2, and two of the determination conditions 3 are satisfied", The air conditioner enters the first defrost mode.
- 根据权利要求1所述的空调器除霜控制方法，其特征在于，“所述压缩机的频率满足预设条件”具体为：The defrosting control method for an air conditioner according to claim 1, wherein "the frequency of the compressor satisfies a preset condition" is specifically:所述压缩机的工作频率处于不低于预设频率的时长大于第三预设时长。The working frequency of the compressor is not lower than the preset frequency for longer than the third preset duration.
- 根据权利要求1所述的空调器除霜控制方法，其特征在于，“所述压缩机的频率满足预设条件”具体为：The defrosting control method for an air conditioner according to claim 1, wherein "the frequency of the compressor satisfies a preset condition" is specifically:定期采集到的所述压缩机的工作频率的平均值不低于预设频率。The average value of the operating frequency of the compressor collected periodically is not lower than the preset frequency.
- 根据权利要求1至6中任一项所述的空调器除霜控制方法，所述第一预设时长为不小于50min的时长，所述第二预设时长为不大于5min的时长。The defrosting control method for an air conditioner according to any one of claims 1 to 6, wherein the first preset duration is a duration of not less than 50 min, and the second preset duration is a duration of no more than 5 min.
- 根据权利要求1所述的空调器除霜控制方法，其特征在于，所述第一除霜模式为逆循环除霜模式，所述第二除霜模式为旁通除霜模式。The defrosting control method for an air conditioner according to claim 1, wherein the first defrosting mode is a reverse cycle defrosting mode, and the second defrosting mode is a bypass defrosting mode.
- 一种空调器，包括压缩机、空调室外机、空调室内机、节流机构和四通阀，所述压缩机、所述空调室外机和所述空调室内机依次相连形成闭环，所述节流机构设置于所述空调室外机和所述空调室内机之间，所述四通阀能够通过换向的方式使所述空调器处于制冷循环或者制热循环，其特征在于，所述空调器还包括：An air conditioner includes a compressor, an air conditioner outdoor unit, an air conditioner indoor unit, a throttle mechanism, and a four-way valve, wherein the compressor, the air conditioner outdoor unit, and the air conditioner indoor unit are sequentially connected to form a closed loop, and the throttle unit The mechanism is disposed between the air conditioner outdoor unit and the air conditioner indoor unit, and the four-way valve can be in a reversing manner to cause the air conditioner to be in a refrigeration cycle or a heating cycle, wherein the air conditioner further include:旁通支路，其设置于所述压缩机和所述空调室外机之间，且所述旁通支路上设置有旁通单向阀；a bypass branch disposed between the compressor and the outdoor unit of the air conditioner, and a bypass check valve is disposed on the bypass branch;控制部，其用于：Control unit for:根据获取的上一次除霜完成之后所述空调器处于制热工况的制热运行时长、所述空调器上一次除霜的除霜运行时长以及上一次除霜完成之后所述空调器的压缩机的频率，确定判断条件1、判断条件2以及判断条件3的满足个数，According to the obtained heating operation time after the last defrosting is completed, the heating operation time of the air conditioner in the heating condition, the defrosting operation time of the last defrosting of the air conditioner, and the compression of the air conditioner after the last defrosting is completed The frequency of the machine, determining the number of judgment conditions 1, the judgment condition 2, and the judgment condition 3,其中，所述判断条件1为所述制热运行时长大于第一预设时长；判断条件2为所述除霜运行时长小于第二预设时长；判断条件3为所述压缩机的频率满足预设条件；The determining condition 1 is that the heating operation duration is greater than the first preset duration; the determining condition 2 is that the defrost operation duration is less than the second preset duration; and the determining condition 3 is that the compressor frequency is satisfied. Set conditions;在所述判断条件1、所述判断条件2以及所述判断条件3均满足的情形下，使所述空调器进入第一除霜模式；When the determination condition 1, the determination condition 2, and the determination condition 3 are satisfied, the air conditioner is caused to enter the first defrost mode;在所述判断条件1、所述判断条件2以及所述判断条件3中只有其中一个或者其中两个条件满足的情形下，使所述空调器进入第二除霜模式。The air conditioner is caused to enter the second defrosting mode in a case where only one or both of the determination condition 1, the determination condition 2, and the determination condition 3 are satisfied.
- 根据权利要求9所述的空调器，其特征在于，所述第一除霜模式为 逆循环除霜模式，所述第二除霜模式为旁通除霜模式。The air conditioner according to claim 9, wherein said first defrosting mode is a reverse cycle defrosting mode, and said second defrosting mode is a bypass defrosting mode.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710367681.9A CN107289578B (en) | 2017-05-23 | 2017-05-23 | Air conditioner and defrosting control method thereof |
| CN201710367681.9 | 2017-05-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2018214609A1 true WO2018214609A1 (en) | 2018-11-29 |
Family
ID=60095353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2018/077792 WO2018214609A1 (en) | 2017-05-23 | 2018-03-01 | Air conditioner and defrosting control method therefor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107289578B (en) |
| WO (1) | WO2018214609A1 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107289578B (en) * | 2017-05-23 | 2020-04-24 | 青岛海尔空调器有限总公司 | Air conditioner and defrosting control method thereof |
| CN108692422B (en) * | 2018-05-21 | 2020-06-05 | 广东美的暖通设备有限公司 | Air conditioner defrosting time length adjusting method and device, air conditioner and readable storage medium |
| CN108592297B (en) * | 2018-06-01 | 2021-04-20 | 青岛海尔空调器有限总公司 | Defrosting control method for air conditioner |
| CN110749072A (en) * | 2018-07-23 | 2020-02-04 | 青岛海尔空调电子有限公司 | Air conditioner and outdoor unit defrosting control method thereof |
| CN110836468A (en) * | 2018-08-17 | 2020-02-25 | 青岛海尔空调器有限总公司 | Defrosting control method for air conditioner |
| AU2019436796B2 (en) * | 2019-03-25 | 2022-12-08 | Mitsubishi Electric Corporation | Air-conditioning apparatus |
| CN110243061B (en) * | 2019-06-20 | 2021-09-24 | 广东美的暖通设备有限公司 | Control method, air conditioner, and computer-readable storage medium |
| CN110186153A (en) * | 2019-07-11 | 2019-08-30 | 芜湖美智空调设备有限公司 | Air conditioner and its progress control method, operating control device and computer readable storage medium |
| CN110553347B (en) * | 2019-09-17 | 2022-01-04 | 宁波奥克斯电气股份有限公司 | Control method and system for delaying frosting, storage medium and air conditioner |
| CN111059700B (en) * | 2019-12-24 | 2021-01-15 | 珠海格力电器股份有限公司 | Air conditioner defrosting control method and device and air conditioner |
| CN111397098B (en) * | 2020-04-10 | 2021-08-24 | 宁波奥克斯电气股份有限公司 | Defrosting control method and device, air conditioner and computer readable storage medium |
| CN111503815A (en) * | 2020-04-29 | 2020-08-07 | 广东美的制冷设备有限公司 | Defrosting control method of air conditioning system and air conditioning system |
| CN111503826B (en) * | 2020-04-29 | 2022-05-10 | 广东美的制冷设备有限公司 | Defrosting control method of air conditioning system and air conditioning system |
| CN112050399B (en) * | 2020-09-08 | 2021-09-28 | 青岛海信日立空调***有限公司 | Air conditioner |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05187746A (en) * | 1992-01-16 | 1993-07-27 | Mitsubishi Electric Corp | Air conditioner |
| JPH07103623A (en) * | 1993-09-30 | 1995-04-18 | Toshiba Corp | Air-conditioning device |
| JPH08226715A (en) * | 1995-02-23 | 1996-09-03 | Mitsubishi Electric Corp | Heat pump type air conditioning equipment |
| JP2007278536A (en) * | 2006-04-03 | 2007-10-25 | Matsushita Electric Ind Co Ltd | Air conditioner |
| CN101187516A (en) * | 2006-11-17 | 2008-05-28 | 海尔集团公司 | Air-conditioner defrosting method |
| JP2008128515A (en) * | 2006-11-17 | 2008-06-05 | Matsushita Electric Ind Co Ltd | Air conditioning device |
| CN102032730A (en) * | 2010-11-25 | 2011-04-27 | 佛山市中格威电子有限公司 | Hot-gas bypass defrosting system for variable-frequency air conditioner |
| JP2015161435A (en) * | 2014-02-27 | 2015-09-07 | 株式会社富士通ゼネラル | air conditioner |
| CN107289578A (en) * | 2017-05-23 | 2017-10-24 | 青岛海尔空调器有限总公司 | Air conditioner and its defrosting control method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5634071B2 (en) * | 2010-01-12 | 2014-12-03 | 三菱電機株式会社 | Air conditioner and defrosting operation method of air conditioner |
| CN106461253B (en) * | 2014-04-22 | 2020-01-14 | 日立江森自控空调有限公司 | Air conditioner and defrosting operation method thereof |
| CN105387560B (en) * | 2015-10-30 | 2018-02-13 | 株洲麦格米特电气有限责任公司 | A kind of DC frequency converting air-conditioner intelligent defrosting method |
| CN105910237A (en) * | 2016-05-11 | 2016-08-31 | 广东美的制冷设备有限公司 | Defrosting control method and device for air conditioner |
| CN106288144A (en) * | 2016-07-26 | 2017-01-04 | 广东美的暖通设备有限公司 | Air-conditioner and Defrost method thereof |
-
2017
- 2017-05-23 CN CN201710367681.9A patent/CN107289578B/en active Active
-
2018
- 2018-03-01 WO PCT/CN2018/077792 patent/WO2018214609A1/en active Application Filing
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05187746A (en) * | 1992-01-16 | 1993-07-27 | Mitsubishi Electric Corp | Air conditioner |
| JPH07103623A (en) * | 1993-09-30 | 1995-04-18 | Toshiba Corp | Air-conditioning device |
| JPH08226715A (en) * | 1995-02-23 | 1996-09-03 | Mitsubishi Electric Corp | Heat pump type air conditioning equipment |
| JP2007278536A (en) * | 2006-04-03 | 2007-10-25 | Matsushita Electric Ind Co Ltd | Air conditioner |
| CN101187516A (en) * | 2006-11-17 | 2008-05-28 | 海尔集团公司 | Air-conditioner defrosting method |
| JP2008128515A (en) * | 2006-11-17 | 2008-06-05 | Matsushita Electric Ind Co Ltd | Air conditioning device |
| CN102032730A (en) * | 2010-11-25 | 2011-04-27 | 佛山市中格威电子有限公司 | Hot-gas bypass defrosting system for variable-frequency air conditioner |
| JP2015161435A (en) * | 2014-02-27 | 2015-09-07 | 株式会社富士通ゼネラル | air conditioner |
| CN107289578A (en) * | 2017-05-23 | 2017-10-24 | 青岛海尔空调器有限总公司 | Air conditioner and its defrosting control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107289578A (en) | 2017-10-24 |
| CN107289578B (en) | 2020-04-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2018214609A1 (en) | Air conditioner and defrosting control method therefor | |
| CN106958926B (en) | Air conditioner and defrosting control method thereof | |
| CN110230857B (en) | One-driving-multiple air conditioner and self-cleaning control method thereof | |
| TWI689688B (en) | Air conditioner, control method and program of air conditioner | |
| CN110030665B (en) | Defrosting control method and device and air conditioner | |
| JP5958503B2 (en) | Room temperature adjustment system | |
| JP6667232B2 (en) | Air conditioner | |
| TWI780478B (en) | air conditioner | |
| CN110715364A (en) | Air treatment equipment and control method and device thereof | |
| CN108375171B (en) | Self-cleaning control method for air conditioner | |
| CN110094832A (en) | A kind of work Defrost method of convertible frequency air-conditioner | |
| WO2022068968A1 (en) | Heating control method for air conditioner | |
| JPWO2020144797A1 (en) | Air conditioner | |
| JP4752541B2 (en) | Air conditioner | |
| WO2024093177A1 (en) | Air conditioner control method and control apparatus and air conditioner | |
| CN108692426B (en) | Defrosting control method for air conditioner | |
| CN115200176B (en) | Control method and control device for defrosting of multiple external units in parallel connection and multi-connected air conditioner | |
| CN113639408A (en) | Air conditioner and control method thereof | |
| WO2023284193A1 (en) | Control method for implementing self-cleaning function outside of coiled pipe of outdoor heat exchanger | |
| WO2023284197A1 (en) | In-pipe self-cleaning control method for outdoor heat exchanger | |
| CN111322784A (en) | Air conditioning unit capable of continuously heating and control method thereof | |
| CN108592297B (en) | Defrosting control method for air conditioner | |
| JP5992076B1 (en) | Refrigeration cycle apparatus, refrigerator equipped with the refrigeration cycle apparatus, and defrosting method for refrigeration cycle apparatus | |
| CN108800451B (en) | Defrosting control method for air conditioner | |
| CN108692425B (en) | Defrosting control method for air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 18806277 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 18806277 Country of ref document: EP Kind code of ref document: A1 |