CN109708246B - Control method for high-frequency starting of variable-frequency air conditioner and air conditioner - Google Patents
Control method for high-frequency starting of variable-frequency air conditioner and air conditioner Download PDFInfo
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- CN109708246B CN109708246B CN201811513558.4A CN201811513558A CN109708246B CN 109708246 B CN109708246 B CN 109708246B CN 201811513558 A CN201811513558 A CN 201811513558A CN 109708246 B CN109708246 B CN 109708246B
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Abstract
The invention discloses a control method for high-frequency starting of a variable-frequency air conditioner, which comprises the following steps that when the external environment temperature meets a first preset temperature condition, the target frequency of a compressor is compared with a set first limit frequency; when the target frequency of the compressor is greater than or equal to the first limit frequency, controlling the compressor to operate at the first limit frequency for a second preset time and then operate at a normal frequency; when the target frequency of the compressor is smaller than the first limit frequency, controlling the compressor to be increased to the target frequency at a set increasing rate, and maintaining the compressor to operate at the target frequency for a second preset time and then operate at a normal frequency; when the target frequency of the compressor is less than a set second limit frequency, controlling the compressor to operate at a normal frequency; by the method, under severe working conditions, the air can be cooled and heated more quickly, the requirements of customers on quick cooling and heating are met, and the customer satisfaction is improved.
Description
Technical Field
The invention relates to the field of air conditioning, in particular to a control method for high-frequency starting of a variable-frequency air conditioner and the air conditioner.
Background
The air conditioner is used as an air quality adjusting device, along with the development of the air conditioner technology, the requirements of people on the air conditioner are higher and higher, particularly, the quick cooling and heating are required to be realized under severe working conditions, the air conditioner is required to operate at high frequency within a period of starting, the requirements of cold and hot temperatures in a client room are quickly met, the difference value of the ambient temperature and the target temperature is mostly used as the basis for controlling the air conditioner to quickly reach the target temperature in the related technology, although the technology can realize the high-frequency operation, the air conditioner can be longer in a certain frequency platform in the control process, the time for reaching the target temperature is prolonged, the purpose of quickly realizing the cooling and heating by a user cannot be met, and the user experience is seriously influenced.
Disclosure of Invention
The invention aims to provide a control method for high-frequency starting of a variable-frequency air conditioner, which comprises a compressor, wherein the compressor is started for the first time after the compressor is started for the first time or is stopped for the first preset time after receiving a shutdown signal, and when the external environment temperature meets a first preset temperature condition, the target frequency of the compressor is compared with a set first limit frequency; when the target frequency of the compressor is greater than or equal to the first limit frequency, controlling the compressor to operate at the first limit frequency for a second preset time and then operate at a normal frequency; when the target frequency of the compressor is smaller than the first limit frequency, controlling the compressor to be increased to the target frequency at a set increasing rate, and maintaining the compressor to operate at the target frequency for a second preset time and then operate at a normal frequency; when the target frequency of the compressor is less than a set second limit frequency, controlling the compressor to operate at a normal frequency; wherein the set first limit frequency is greater than the set second limit frequency.
And further controlling the compressor to run at the first limit frequency or controlling the compressor to run at the set frequency increasing rate and increase the frequency to the target frequency within 1 minute, forcibly quitting the high-frequency starting control, and starting the compressor again after a preset time interval.
Further when the air conditioner is in the refrigeration mode, the first preset condition is as follows: t is not less than 25 DEG COuter ringK1 ℃ or lower, wherein T isOuter ringIs the outdoor ambient temperature. In particular, k1 ═ 50,52]。
Further when the air conditioner is in the heating mode, the first preset condition is as follows: t is not less than k2 ℃Outer ringLess than or equal to 15 ℃; wherein T isOuter ringIs the outdoor ambient temperature. Specifically, k2 is [0, 2 ]]。
Further, the second preset time value is [90,150] seconds.
Further the set first limit frequency is a maximum limit frequency of operation of the compressor.
Further, the set second limit frequency is a maximum value of frequencies corresponding to a decrease or an increase of the indoor loop temperature by 5 ℃ in [6, 8] minute time.
Further the rate of up-conversion is 1Hz/1 s.
In order to solve the above technical problem, another aspect of the embodiments of the present invention provides an air conditioner, where the air conditioner operates by using any one of the above control methods.
According to the control method implemented by the invention, under the severe working condition, when a user needs to quickly reach the target temperature, the air conditioner is controlled to forcibly run at high frequency after being started, so that the residence time of the compressor on a certain frequency platform is effectively shortened, the air conditioner can more quickly refrigerate and heat, the requirements of quick refrigeration and heating of the user are met, and the satisfaction degree of the user is improved.
Drawings
FIG. 1 is a system schematic diagram of an air conditioner of the present invention
FIG. 2 is a control flow chart of the implementation of the present invention
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
Example 1:
before describing the control method of the present invention, a system schematic of an air conditioner will be described to better understand the present invention. The system schematic diagram of the air conditioner of the present invention is schematically illustrated below with reference to fig. 1, and the air conditioner of the embodiment of the present invention has a compressor 1, a four-way valve 2, an outdoor heat exchanger 3, an expansion valve 6, a stop valve 52, an indoor heat exchanger 4, and a stop valve 51 connected to one of the interfaces of the four-way valve after passing through the stop valve 51. An indoor temperature sensor 42 is arranged on the indoor unit side for detecting the indoor environment temperature, and an inner disk temperature sensor 43 is arranged on the indoor unit heat exchanger 4 for detecting the temperature of the indoor heat exchanger 4, namely the inner disk temperature. The outer fan 31 and the inner fan 41 drive air to exchange heat with the indoor and outdoor heat exchangers. The present air conditioning system is similar or identical to related air conditioning systems and can be understood by those skilled in the art in conjunction with existing air conditioning systems and will not be described in detail.
As shown in fig. 2, the control method of the inverter air conditioner includes the compressor 1, and when the compressor 1 is started for the first time or is started for the first time after receiving a shutdown signal and stopping for a first preset time, the first preset time is set to 30 minutes. Outdoor temperature sensor obtains external environment temperature TOuter ringWhen the external ambient temperature TOuter ringWhen a first preset temperature condition is met, comparing the target frequency of the compressor 1 with a set first limit frequency; when the target frequency of the compressor 1 is greater than or equal to a first limit frequency, controlling the compressor 1 to operate at the first limit frequency for a second preset time tEQSThen, the operation is carried out at a normal frequency; when the target frequency of the compressor 1 is less than the first limit frequency, controlling the compressor 1 to increase the frequency to the target frequency at a set increasing rate, and maintaining the compressor to operate for a second preset time t at the target frequencyEQSThen, the operation is carried out at a normal frequency; when the target frequency of the compressor 1 is less than a set second limit frequency, controlling the compressor 1 to operate at a normal frequency; wherein the set first limit frequency is greater than the set second limit frequency. It can be understood that when the outdoor ambient temperature T isOuter ringWhen the first preset temperature condition is not met, the compressor can meet the user requirement through normal frequency operation under the working condition.
More specifically, the control method of the air conditioner according to the embodiment of the present invention slightly varies the first preset condition when the air conditioner is in different operation modes, wherein the first preset condition is set when the air conditioner is in the cooling modeThe conditions are as follows: t is not less than 25 DEG COuter ringK1 ℃ or lower, wherein T isOuter ringFor the outdoor ambient temperature, the temperature upper limit k1 may be specifically set to [50,52 ═ c]The selection in this range is merely an example, the temperature is selected according to the conditions such as the air conditioner is in a different environment, the harsh environment of the air conditioner working environment is different in different regions, and the air pressure, the altitude and the temperature of the region can be selected, for example, further selected in [41,52 ]]The value is in the range of DEG C.
When the air conditioner is in the heating mode, the first preset condition is as follows: t is not less than k2 ℃Outer ringLess than or equal to 15 ℃; wherein T isOuter ringThe specific k2 is [0, 2 ] for outdoor ambient temperature]DEG C. For the above reasons, the air conditioner selects different temperatures according to the region of the working environment, the temperature range is only for example, the range can be further enlarged, and k2 is in [ -1,10 ]]Values within the range.
The inventor researches the time of the compressor running at high frequency in the control method for a long time, and finds that the second preset time is suitable to be [90,150] seconds. The compressor can give consideration to both reliability and rapid cooling in this interval.
The first limiting frequency is set as the highest limiting frequency of the compressor operation, the limiting frequency is the highest frequency which can be achieved when the compressor is started under the control method of the embodiment of the invention, the limiting frequency is a constant test value, the operation frequency is selected under the condition that the compressor is not protected after being started under the maximum load condition by the control method, and the frequency is selected to be capable of leaving a margin by taking the limiting value of the operation frequency of the compressor as a reference.
The second limit frequency is the maximum value of the frequencies corresponding to the temperature reduction or increase of the indoor loop by 5 ℃ within [6, 8] minutes, the frequency is not too low, the frequency is limited as low as the normal starting frequency of the compressor 1, and the value is higher than the normal starting frequency.
The frequency increasing rate of the control method of the embodiment of the invention is 1Hz/1 s.
If the air conditioner receives an emergency stop or fault signal during the operation of the air conditioner control method, the air conditioner is forced to exit the control method, and the actions of emergency stop, frequent start and stop or fault signal triggering are preferentially executed. For example, when the air conditioner is started and then stopped again after the compressor is operated for less than one minute, the compressor protection mechanism is started, for example, the compressor is forced to run for 6 minutes and then is shut down, so as to protect the compressor.
The control method of the embodiment of the invention can be stored in a memory of the air conditioner, and the memory has no specific requirement, and meanwhile, the invention can also provide a storage medium which is used for storing the control method.
According to the control method implemented by the invention, under the severe working condition, when a user needs to quickly reach the target temperature, the air conditioner is controlled to forcibly run at high frequency after being started, so that the residence time of the compressor on a certain frequency platform is effectively shortened, the air conditioner can more quickly refrigerate and heat, the requirements of quick refrigeration and heating of the user are met, and the satisfaction degree of the user is improved.
Example 2
In order to solve the above technical problem, another aspect of the embodiments of the present invention provides an air conditioner, where the air conditioner operates by using any one of the above control methods. The system schematic of an air conditioner is understood with reference to fig. 1. The air conditioner is preferably an inverter air conditioner.
The air conditioner adopting the control method of the invention has the same technical effects as embodiment 1, and the details are not repeated herein.
It should be noted that any process or method descriptions in flowcharts of embodiments of the invention or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and that the scope of the preferred embodiments of the present invention includes additional implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments. In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium. The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents, which are to be considered as merely preferred embodiments of the invention, and not intended to be limiting of the invention, and that various changes and modifications may be effected therein by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A control method for high-frequency starting of a variable-frequency air conditioner comprises a compressor, and is characterized in that: the method comprises the steps that when the compressor is started for the first time or is stopped for the first preset time after receiving a shutdown signal, the compressor is started for the first time, and when the external environment temperature meets a first preset temperature condition; comparing the target frequency of the compressor with a set first limit frequency, and controlling the compressor to operate at the first limit frequency for a second preset time and then at a normal frequency when the target frequency of the compressor is greater than or equal to the first limit frequency; when the target frequency of the compressor is smaller than the first limit frequency, controlling the compressor to be increased to the target frequency at a set increasing rate, and maintaining the compressor to operate at the target frequency for a second preset time and then operate at a normal frequency; when the target frequency of the compressor is less than a set second limit frequency, controlling the compressor to operate at a normal frequency; wherein the set first limit frequency is greater than a set second limit frequency, the second limit frequency being greater than a normal frequency;
the set first limit frequency is the highest limit frequency of the compressor operation;
when the air conditioner is in the refrigeration mode, the first preset temperature condition is as follows: t is not less than 25 DEG COuter ringK1 ℃ or lower, wherein T isOuter ringFor outdoor ambient temperature, k1 ═ 50,52]；
When the air conditioner is in the heating mode, the first preset temperature condition is as follows: t is not less than k2 ℃Outer ringLess than or equal to 15 ℃; wherein T isOuter ringFor outdoor ambient temperature, k2 ═ 0, 2]。
2. The control method according to claim 1, characterized in that: and when the compressor is controlled to operate at the first limit frequency or the compressor is controlled to operate at the set frequency increasing rate and the target frequency within 1 minute and a stop signal is received, the high-frequency starting control is forcibly quitted, and the compressor is started again after a preset time interval.
3. The control method according to claim 1, characterized in that: the second preset time value is [90,150] seconds.
4. The control method according to any one of claim 1, characterized in that: the set second limit frequency is the maximum of the frequencies corresponding to the decrease or increase of the indoor loop temperature by 5 c within the time of [6, 8] minutes.
5. The control method according to any one of claims 1 to 4, characterized in that: the rate of the frequency increase is 1Hz/1 s.
6. An air conditioner, characterized in that the air conditioner is operated by the control method according to any one of claims 1 to 5.
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| CN110243063A (en) * | 2019-06-21 | 2019-09-17 | 宁波奥克斯电气股份有限公司 | A kind of control method, system and the air-conditioning of compressor of air conditioner multi-mode operation |
| CN110542193A (en) * | 2019-09-13 | 2019-12-06 | 广东希塔变频技术有限公司 | Control method and control device for air conditioning equipment and air conditioning equipment |
| CN110567127A (en) * | 2019-09-23 | 2019-12-13 | 宁波奥克斯电气股份有限公司 | air conditioner frequency control method and air conditioner |
| CN110762795A (en) * | 2019-10-31 | 2020-02-07 | 广东美的制冷设备有限公司 | Air conditioner operation method, operation device, air conditioner and readable storage medium |
| CN111380179B (en) * | 2020-03-27 | 2021-09-28 | 广东美的制冷设备有限公司 | Air conditioner high-temperature disinfection frequency-limiting protection method, air conditioner, storage medium and device |
| CN112762582B (en) * | 2020-12-31 | 2022-12-23 | 佛山市顺德区美的电子科技有限公司 | Control method of air conditioner and air conditioner |
| CN113137702A (en) * | 2021-05-14 | 2021-07-20 | 珠海格力电器股份有限公司 | Method for adjusting frequency of air conditioner compressor and air conditioner |
| CN115789890B (en) * | 2022-12-05 | 2024-06-11 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device and air conditioner |
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| CN101093093A (en) * | 2006-06-23 | 2007-12-26 | 乐金电子(天津)电器有限公司 | Air conditioner of convertor and control method |
| CN101109553A (en) * | 2006-07-19 | 2008-01-23 | 乐金电子(天津)电器有限公司 | Method for limiting inverter compressor maximum frequency according to outdoor environment temperature |
| CN105222277B (en) * | 2015-10-09 | 2018-05-08 | Tcl空调器(中山)有限公司 | A kind of frequency-variable air conditioner outdoor machine quickly starts the control method and system of compressor |
| KR102600975B1 (en) * | 2016-12-21 | 2023-11-14 | 삼성전자주식회사 | Air conditioner and control method thereof |
| CN106642579B (en) * | 2016-12-26 | 2020-10-09 | 广东美的制冷设备有限公司 | Starting frequency adjusting method and device suitable for air conditioner compressor |
| JP2018185118A (en) * | 2017-04-27 | 2018-11-22 | パナソニックＩｐマネジメント株式会社 | Air conditioner |
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