CN113819579A - Frequency adjusting method and device, readable storage medium and air conditioner - Google Patents

Frequency adjusting method and device, readable storage medium and air conditioner Download PDF

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Publication number
CN113819579A
CN113819579A CN202111254055.1A CN202111254055A CN113819579A CN 113819579 A CN113819579 A CN 113819579A CN 202111254055 A CN202111254055 A CN 202111254055A CN 113819579 A CN113819579 A CN 113819579A
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China
Prior art keywords
frequency
air conditioner
duration
maximum
operating frequency
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Pending
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CN202111254055.1A
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Chinese (zh)
Inventor
彭泉贵
赵浩伟
陈柯壁
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GD Midea Heating and Ventilating Equipment Co Ltd
Hefei Midea Heating and Ventilating Equipment Co Ltd
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GD Midea Heating and Ventilating Equipment Co Ltd
Hefei Midea Heating and Ventilating Equipment Co Ltd
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Priority to CN202111254055.1A priority Critical patent/CN113819579A/en
Publication of CN113819579A publication Critical patent/CN113819579A/en
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    • 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/41—Defrosting; Preventing freezing
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Thermal Sciences (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides a frequency adjusting method, a device, a readable storage medium and an air conditioner, wherein the frequency adjusting method comprises the following steps: acquiring the maximum operating frequency of a compressor and the duration of the current defrosting period in the current defrosting period; the maximum operation frequency is adjusted according to the comparison result of the duration and the preset duration, so that the adjusted maximum operation frequency is used as the maximum operable frequency of the compressor in the next defrosting period, and the adjustment method can be operated to adjust the maximum operation frequency of the compressor so that the adjusted maximum operation frequency is matched with the actual use working condition of the air conditioner, therefore, the frosting speed of the outdoor heat exchanger can be reduced, the capacity output of the air conditioner is more stable, and the problems in the prior art are solved.

Description

Frequency adjusting method and device, readable storage medium and air conditioner
Technical Field
The invention relates to the technical field of control, in particular to a frequency adjusting method, a frequency adjusting device, a readable storage medium and an air conditioner.
Background
The outdoor heat exchanger of the air conditioner is easy to quickly frost under the use working conditions of low-temperature and high-humidity environments, and the air conditioner enters a defrosting mode frequently under the condition of high frosting speed, so that the capacity output of the air conditioner becomes unstable.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, a first aspect of the present invention is to provide a frequency adjustment method.
In a second aspect of the present invention, a frequency adjustment apparatus is provided.
A third aspect of the present invention is to provide a frequency adjustment apparatus.
A fourth aspect of the present invention is to provide a readable storage medium.
A fifth aspect of the present invention is to provide an air conditioner.
In view of the above, according to a first aspect of the present invention, there is provided a frequency adjustment method for a compressor in an air conditioner, comprising: acquiring the maximum operating frequency of a compressor and the duration of the current defrosting period in the current defrosting period; and adjusting the maximum operating frequency according to the comparison result of the duration and the preset duration so as to take the adjusted maximum operating frequency as the maximum operable frequency of the compressor in the next defrosting period.
The technical scheme of the application provides a frequency adjusting method, and the adjusting method can be operated to realize the adjustment of the maximum operating frequency of the compressor, so that the adjusted maximum operating frequency is matched with the actual operating condition of the air conditioner, and meanwhile, the average heat exchange capacity of the air conditioner in a defrosting period is improved, for example, the average heat exchange capacity is improved by 5 to 10 percent. Therefore, the frosting speed of the outdoor heat exchanger can be reduced, so that the capacity output of the air conditioner is more stable, and the problems in the prior art are solved.
The technical scheme of the application is realized based on the following principle, specifically, the method comprises the following steps:
under the condition that the maximum operation frequency of the compressor is higher, the operation pressure of the air conditioner is higher, correspondingly, the frosting speed on the outdoor heat exchanger of the air conditioner is higher, and on the basis, the frosting speed of the outdoor heat exchanger can be delayed by reducing the maximum operation frequency of the compressor.
Under the same working condition of the air conditioner, the higher the frosting speed of the outdoor heat exchanger, the more frequently the air conditioner enters the defrosting mode, and the smaller the corresponding duration, so the frosting speed of the outdoor heat exchanger can be represented by using the duration, the frosting speed of the current outdoor heat exchanger can be determined by comparing the duration with the preset duration, and the maximum operating frequency can be adjusted according to the comparison result, so that the adjusted maximum operating frequency is matched with the actual use working condition of the air conditioner.
In any of the above technical solutions, in the defrosting cycle, the defrosting mode is operated, that is, when the air conditioner operates according to the defrosting mode, frost accumulated on the outdoor heat exchanger can be removed.
In any of the above technical solutions, the preset time is a comparison parameter for measuring the frosting speed of the outdoor heat exchanger, and the specific value thereof may be set according to the use scenario of the air conditioner.
In any of the above technical solutions, the preset duration may also be an empirical value, and is set by a user.
In addition, the claimed frequency adjustment method of the present application has the following additional technical features.
In the technical scheme, the maximum operation frequency is reduced based on the fact that the duration is less than the first preset duration.
In the technical scheme, under the condition that the duration is less than the first preset duration, the maximum operation frequency of the current compressor is determined to be higher, namely the frosting speed of the current outdoor heat exchanger is higher and is not adaptive to the current use working condition of the air conditioner, and the frosting speed of the outdoor heat exchanger is reduced by reducing the value of the maximum operation frequency, so that the operation parameters of the air conditioner are adaptive to the current use working condition of the air conditioner, and the capacity output of the air conditioner is more stable.
In addition, under the condition that the use scene of the air conditioner is not changed, namely the use working condition of the air conditioner is not changed, the duration time can be prolonged while the maximum operation frequency is reduced, so that the starting frequency of a defrosting mode is reduced, the frequency of switching the four-way valve by the air conditioner is reduced, and the service life of the air conditioner is prolonged.
In addition, the time interval for the air conditioner to repeatedly start the defrosting mode is prolonged, so that the influence of the frequent operation of the defrosting mode on the use of a user during the operation of the air conditioner is reduced.
In any of the above technical solutions, the reducing the maximum operating frequency includes: acquiring a first adjustment coefficient; determining a first adjusting value according to the first adjusting coefficient and the maximum operating frequency; the maximum operating frequency is adjusted lower according to the first adjustment value.
In the technical scheme, a specific scheme for reducing the maximum operating frequency is specifically defined, and the operation according to the scheme is convenient for the adjustment of the maximum operating frequency to be matched with the current operating state of the air conditioner, so that the influence on the operating stability of the air conditioner due to overlarge adjustment range of the maximum operating frequency is avoided.
Specifically, the first adjustment coefficient is a constant, and a value range thereof may be set according to a usage scenario of the air conditioner.
In one technical solution, the first adjustment coefficient is greater than zero and less than 1.
In one embodiment, the first adjustment value is a product of a first adjustment coefficient and the maximum operating frequency.
In one embodiment, the adjustment of the maximum operating frequency according to the first adjustment value may be understood as decreasing the first adjustment value on the basis of the maximum operating frequency to obtain the adjusted maximum operating frequency.
In any of the above technical solutions, the maximum operating frequency is increased based on the duration being greater than the second preset duration.
In the technical scheme, when the duration is longer than the second preset duration, the maximum operation frequency of the current compressor is determined to be lower and not adapted to the current use condition of the air conditioner, and the operation parameters of the air conditioner are adapted to the current use condition of the air conditioner by increasing the value of the maximum operation frequency, so that the capacity output of the air conditioner is more stable.
In any of the above technical solutions, increasing the maximum operating frequency includes: acquiring a second adjustment coefficient; determining a second adjusting value according to the second adjusting coefficient and the maximum operating frequency; and increasing the maximum operation frequency according to the second adjustment value.
In the technical scheme, a specific scheme for increasing the maximum operating frequency is specifically defined, and the operation according to the scheme is convenient for the adjustment of the maximum operating frequency to be matched with the current operating state of the air conditioner, so that the influence on the operating stability of the air conditioner due to overlarge adjustment range of the maximum operating frequency is avoided.
Specifically, the second adjustment coefficient is a constant, and a value range thereof may be set according to a usage scenario of the air conditioner.
In one technical solution, the second adjustment coefficient is greater than zero and less than 1.
In one embodiment, the second adjustment value is a product of a second adjustment coefficient and the maximum operating frequency.
In one embodiment, increasing the maximum operating frequency according to the second adjustment value may be understood as increasing the second adjustment value on the basis of the maximum operating frequency to obtain the adjusted maximum operating frequency.
In any of the above technical solutions, the method further includes: determining a sum of the second adjustment value and the maximum operating frequency; and taking the default maximum operation frequency as the adjusted maximum operation frequency based on the sum value being greater than or equal to the default maximum operation frequency.
In the technical scheme, in consideration of the fact that the adjusted maximum operating frequency may exceed the default maximum operating frequency in the process of increasing the maximum operating frequency, it is obvious that the maximum operating frequency already exceeds the frequency at which the compressor can operate under the condition that the maximum operating frequency exceeds the default maximum operating frequency, and if the compressor operates according to the adjusted maximum operating frequency, the probability of the compressor failing is increased.
According to the technical scheme, under the condition that the sum value is greater than or equal to the default maximum operation frequency, the default maximum operation frequency is directly used as the adjusted maximum operation frequency, so that the condition is avoided, and the operation reliability of the air conditioner is improved.
In any of the above technical solutions, the second preset duration is greater than the first preset duration.
In any of the above technical solutions, the maximum operating frequency is maintained unchanged based on the duration being greater than or equal to the first preset duration and less than or equal to the second preset duration.
In the technical scheme, the adjustment frequency of the maximum operation frequency is reduced by keeping the maximum operation frequency unchanged.
In any of the above technical solutions, the maximum operating frequency is adjusted to the default maximum operating frequency based on the duration being greater than the third preset duration.
In any of the above technical solutions, if the duration is not less than the third preset duration, it is determined that the maximum operating frequency is improperly set, so that the heating efficiency of the air conditioner during the operation process is too low, the performance of the air conditioner is seriously affected, and the default maximum operating frequency is used as the adjusted maximum operating frequency, so as to improve the operating efficiency of the air conditioner and maximize the performance of the air conditioner.
In any of the above technical solutions, before obtaining the maximum operating frequency of the compressor and the duration of the current defrost cycle in the current defrost cycle, the method further includes: acquiring historical operation information of the air conditioner; and based on the historical operation information, the maximum operation frequency is reduced when the preset condition is met.
According to the technical scheme, historical operation information of the air conditioner is acquired so as to judge whether the maximum operation frequency needs to be adjusted or not according to the historical operation information, and if the historical operation information meets or meets preset conditions, the maximum operation frequency is determined to need to be adjusted.
In the process, the starting condition for adjusting the maximum running frequency of the compressor is given, the influence of random adjustment of the maximum running frequency of the compressor on the stability of the air conditioner is avoided, and the stability of the air conditioner in the running process is improved through the limitation.
In any of the above technical solutions, the maximum operating frequency is reduced, so that the stability of the air conditioner in the operation process is improved by reducing the maximum operating frequency under the condition that the frosting speed of the outdoor heat exchanger of the air conditioner is too high.
In any of the above technical solutions, the historical operating information includes N historical durations, where N is a positive integer greater than or equal to 1; and determining that the historical operation information meets the preset condition based on the fact that the N historical duration times are all smaller than a first preset duration time.
In the technical scheme, a judging mode of whether the historical operation information meets or meets the preset condition is given, the historical duration of the air conditioner in the defrosting period every time in the operation process is obtained, so that whether the maximum operation frequency of the compressor needs to be adjusted is determined by observing the historical duration, in the process, a starting condition for adjusting the maximum operation frequency of the compressor is given, the influence of random adjustment of the maximum operation frequency of the compressor on the stability of the air conditioner is avoided, and the stability of the air conditioner in the operation process is improved through the limitation.
In one technical scheme, the N historical duration times are data sequences arranged in time sequence, and the N historical duration times are limited to have the characteristics, so that the maximum operation frequency can be adjusted according to the monitoring condition of the air conditioner in the operation process, and the reliability of the adjustment result is improved.
In any of the above technical solutions, the duration is a time difference from the last time the air conditioner exits the defrost mode to the next time the air conditioner enters the defrost mode; or the duration is the time difference from the last time the air conditioner exits the defrosting mode to the next time the air conditioner exits the defrosting mode; or the duration is the time difference from the last time the air conditioner enters the defrosting mode to the next time the air conditioner enters the defrosting mode.
According to a second aspect of the present invention, there is provided a frequency adjustment device for a compressor in an air conditioner, comprising: the defrosting control device comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the maximum operating frequency of a compressor and the duration of a current defrosting period in the current defrosting period; and the adjusting unit is used for adjusting the maximum operating frequency according to the comparison result of the duration and the preset duration so as to take the adjusted maximum operating frequency as the maximum operable frequency of the compressor in the next defrosting period.
The technical scheme of this application provides a frequency adjustment device, uses this adjusting device's air conditioner, can realize the adjustment of the maximum operating frequency of compressor to the maximum operating frequency after the adjustment and the actual use operating mode looks adaptation of air conditioner, simultaneously, improved the average heat transfer ability of air conditioner in the cycle of defrosting, if improve 5% to 10%. Therefore, the frosting speed of the outdoor heat exchanger can be reduced, so that the capacity output of the air conditioner is more stable, and the problems in the prior art are solved.
The technical scheme of the application is realized based on the following principle, specifically, the method comprises the following steps:
under the condition that the maximum operation frequency of the compressor is higher, the operation pressure of the air conditioner is higher, correspondingly, the frosting speed on the outdoor heat exchanger of the air conditioner is higher, and on the basis, the frosting speed of the outdoor heat exchanger can be delayed by reducing the maximum operation frequency of the compressor.
Under the same working condition of the air conditioner, the higher the frosting speed of the outdoor heat exchanger, the more frequently the air conditioner enters the defrosting mode, and the smaller the corresponding duration, so the frosting speed of the outdoor heat exchanger can be represented by using the duration, the frosting speed of the current outdoor heat exchanger can be determined by comparing the duration with the preset duration, and the maximum operating frequency can be adjusted according to the comparison result, so that the adjusted maximum operating frequency is matched with the actual use working condition of the air conditioner.
In any of the above technical solutions, in the defrosting cycle, the defrosting mode is operated, that is, when the air conditioner operates according to the defrosting mode, frost accumulated on the outdoor heat exchanger can be removed.
In any of the above technical solutions, the preset time is a comparison parameter for measuring the frosting speed of the outdoor heat exchanger, and the specific value thereof may be set according to the use scenario of the air conditioner.
In any of the above technical solutions, the preset duration may also be an empirical value, and is set by a user.
In one of the technical solutions, the adjusting unit is specifically configured to: and based on the duration being less than the first preset duration, reducing the maximum operating frequency.
In the technical scheme, under the condition that the duration is less than the first preset duration, the maximum operation frequency of the current compressor is determined to be higher, namely the frosting speed of the current outdoor heat exchanger is higher and is not adaptive to the current use working condition of the air conditioner, and the frosting speed of the outdoor heat exchanger is reduced by reducing the value of the maximum operation frequency, so that the operation parameters of the air conditioner are adaptive to the current use working condition of the air conditioner, and the capacity output of the air conditioner is more stable.
In addition, under the condition that the use scene of the air conditioner is not changed, namely the use working condition of the air conditioner is not changed, the duration time can be prolonged while the maximum operation frequency is reduced, so that the starting frequency of a defrosting mode is reduced, the frequency of switching the four-way valve by the air conditioner is reduced, and the service life of the air conditioner is prolonged.
In addition, the time interval for the air conditioner to repeatedly start the defrosting mode is prolonged, so that the influence of the frequent operation of the defrosting mode on the use of a user during the operation of the air conditioner is reduced.
In one of the technical solutions, the adjusting unit is specifically configured to: acquiring a first adjustment coefficient; determining a first adjusting value according to the first adjusting coefficient and the maximum operating frequency; the maximum operating frequency is adjusted lower according to the first adjustment value.
In the technical scheme, a specific scheme for reducing the maximum operating frequency is specifically defined, and the operation according to the scheme is convenient for the adjustment of the maximum operating frequency to be matched with the current operating state of the air conditioner, so that the influence on the operating stability of the air conditioner due to overlarge adjustment range of the maximum operating frequency is avoided.
Specifically, the first adjustment coefficient is a constant, and a value range thereof may be set according to a usage scenario of the air conditioner.
In one technical solution, the first adjustment coefficient is greater than zero and less than 1.
In one embodiment, the first adjustment value is a product of a first adjustment coefficient and the maximum operating frequency.
In one embodiment, the adjustment of the maximum operating frequency according to the first adjustment value may be understood as decreasing the first adjustment value on the basis of the maximum operating frequency to obtain the adjusted maximum operating frequency.
In one of the technical solutions, the adjusting unit is specifically configured to: and increasing the maximum operation frequency based on the duration being greater than the second preset duration.
In the technical scheme, when the duration is longer than the second preset duration, the maximum operation frequency of the current compressor is determined to be lower and not adapted to the current use condition of the air conditioner, and the operation parameters of the air conditioner are adapted to the current use condition of the air conditioner by increasing the value of the maximum operation frequency, so that the capacity output of the air conditioner is more stable.
In one of the technical solutions, the adjusting unit is specifically configured to: acquiring a second adjustment coefficient; determining a second adjusting value according to the second adjusting coefficient and the maximum operating frequency; and increasing the maximum operation frequency according to the second adjustment value.
In the technical scheme, a specific scheme for increasing the maximum operating frequency is specifically defined, and the operation according to the scheme is convenient for the adjustment of the maximum operating frequency to be matched with the current operating state of the air conditioner, so that the influence on the operating stability of the air conditioner due to overlarge adjustment range of the maximum operating frequency is avoided.
Specifically, the second adjustment coefficient is a constant, and a value range thereof may be set according to a usage scenario of the air conditioner.
In one technical solution, the second adjustment coefficient is greater than zero and less than 1.
In one embodiment, the second adjustment value is a product of a second adjustment coefficient and the maximum operating frequency.
In one embodiment, increasing the maximum operating frequency according to the second adjustment value may be understood as increasing the second adjustment value on the basis of the maximum operating frequency to obtain the adjusted maximum operating frequency.
In one of the technical solutions, the adjusting unit is specifically configured to: determining a sum of the second adjustment value and the maximum operating frequency; and taking the default maximum operation frequency as the adjusted maximum operation frequency based on the sum value being greater than or equal to the default maximum operation frequency.
In the technical scheme, in consideration of the fact that the adjusted maximum operating frequency may exceed the default maximum operating frequency in the process of increasing the maximum operating frequency, it is obvious that the maximum operating frequency already exceeds the frequency at which the compressor can operate under the condition that the maximum operating frequency exceeds the default maximum operating frequency, and if the compressor operates according to the adjusted maximum operating frequency, the probability of the compressor failing is increased.
According to the technical scheme, under the condition that the sum value is greater than or equal to the default maximum operation frequency, the default maximum operation frequency is directly used as the adjusted maximum operation frequency, so that the condition is avoided, and the operation reliability of the air conditioner is improved.
In any of the above technical solutions, the second preset duration is greater than the first preset duration.
In one of the technical solutions, the adjusting unit is specifically configured to: and maintaining the maximum operation frequency unchanged based on the duration being greater than or equal to the first preset duration and less than or equal to the second preset duration.
In the technical scheme, the adjustment frequency of the maximum operation frequency is reduced by keeping the maximum operation frequency unchanged.
In one of the technical solutions, the adjusting unit is specifically configured to: and adjusting the maximum operation frequency to be the default maximum operation frequency based on the duration being greater than the third preset duration.
In any of the above technical solutions, if the duration is not less than the third preset duration, it is determined that the maximum operating frequency is improperly set, so that the heating efficiency of the air conditioner during the operation process is too low, the performance of the air conditioner is seriously affected, and the default maximum operating frequency is used as the adjusted maximum operating frequency, so as to improve the operating efficiency of the air conditioner and maximize the performance of the air conditioner.
In one of the technical solutions, the adjusting unit is specifically configured to: acquiring historical operation information of the air conditioner before the maximum operation frequency of the compressor and the duration of the current defrosting period in the current defrosting period; and based on the historical operation information, the maximum operation frequency is reduced when the preset condition is met.
According to the technical scheme, historical operation information of the air conditioner is acquired so as to judge whether the maximum operation frequency needs to be adjusted or not according to the historical operation information, and if the historical operation information meets or meets preset conditions, the maximum operation frequency is determined to need to be adjusted.
In the process, the starting condition for adjusting the maximum running frequency of the compressor is given, the influence of random adjustment of the maximum running frequency of the compressor on the stability of the air conditioner is avoided, and the stability of the air conditioner in the running process is improved through the limitation.
In any of the above technical solutions, the maximum operating frequency is reduced, so that the stability of the air conditioner in the operation process is improved by reducing the maximum operating frequency under the condition that the frosting speed of the outdoor heat exchanger of the air conditioner is too high.
In one technical scheme, the historical operation information comprises N historical duration, wherein N is a positive integer greater than or equal to 1; and determining that the historical operation information meets the preset condition based on the fact that the N historical duration times are all smaller than a first preset duration time.
In the technical scheme, a judging mode of whether the historical operation information meets or meets the preset condition is given, the historical duration of the air conditioner in the defrosting period every time in the operation process is obtained, so that whether the maximum operation frequency of the compressor needs to be adjusted is determined by observing the historical duration, in the process, a starting condition for adjusting the maximum operation frequency of the compressor is given, the influence of random adjustment of the maximum operation frequency of the compressor on the stability of the air conditioner is avoided, and the stability of the air conditioner in the operation process is improved through the limitation.
In one technical scheme, the N historical duration times are data sequences arranged in time sequence, and the N historical duration times are limited to have the characteristics, so that the maximum operation frequency can be adjusted according to the monitoring condition of the air conditioner in the operation process, and the reliability of the adjustment result is improved.
In one technical scheme, the duration is the time difference from the last time the air conditioner exits the defrosting mode to the next time the air conditioner enters the defrosting mode; or the duration is the time difference from the last time the air conditioner exits the defrosting mode to the next time the air conditioner exits the defrosting mode; or the duration is the time difference from the last time the air conditioner enters the defrosting mode to the next time the air conditioner enters the defrosting mode.
According to a third aspect of the present invention, there is provided a frequency adjustment device for a compressor in an air conditioner, comprising: a memory storing a program, and a processor implementing the steps of the frequency adjustment method according to any one of the above embodiments when the processor executes the program.
According to a fourth aspect of the invention, there is provided a readable storage medium on which is stored a program or instructions which, when executed by a processor, carry out the steps of the frequency adjustment method as claimed in any one of the above.
According to a fifth aspect of the present invention, there is provided an air conditioner comprising: a frequency adjustment device as described above; or a readable storage medium as described above.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic flow chart illustrating a frequency adjustment method according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating the reduction of the maximum operating frequency in an embodiment of the present invention;
FIG. 3 is a schematic flow chart illustrating the operation of increasing the maximum operating frequency according to an embodiment of the present invention;
fig. 4 shows one of the schematic block diagrams of a frequency adjustment arrangement in an embodiment of the invention;
fig. 5 shows a second schematic block diagram of a frequency adjustment apparatus according to an embodiment of the invention;
fig. 6 is a diagram showing the average heat exchange capacity during a defrost cycle before and after frequency adjustment in an embodiment of the present invention.
Detailed Description
So that the manner in which the above recited aspects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Example one
As shown in fig. 1, according to an embodiment of the present invention, there is provided a frequency adjustment method for a compressor in an air conditioner, including:
102, acquiring the maximum operating frequency of a compressor and the duration of the current defrosting period in the current defrosting period;
and 104, adjusting the maximum operation frequency according to the comparison result of the duration and the preset duration, so that the adjusted maximum operation frequency is used as the maximum operable frequency of the compressor in the next defrosting period.
The embodiment of the application provides a frequency adjusting method, and by operating the adjusting method, the adjustment of the maximum operating frequency of a compressor can be realized, so that the adjusted maximum operating frequency is matched with the actual operating condition of an air conditioner, and meanwhile, the average heat exchange capacity of the air conditioner in a defrosting period is improved, for example, the average heat exchange capacity is improved by 5 to 10 percent. Therefore, the frosting speed of the outdoor heat exchanger can be reduced, so that the capacity output of the air conditioner is more stable, and the problems existing in the prior embodiment are overcome.
The embodiments of the present application are realized based on the following principles, specifically including:
under the condition that the maximum operation frequency of the compressor is higher, the operation pressure of the air conditioner is higher, correspondingly, the frosting speed on the outdoor heat exchanger of the air conditioner is higher, and on the basis, the frosting speed of the outdoor heat exchanger can be delayed by reducing the maximum operation frequency of the compressor.
Under the same working condition of the air conditioner, the higher the frosting speed of the outdoor heat exchanger, the more frequently the air conditioner enters the defrosting mode, and the smaller the corresponding duration, so the frosting speed of the outdoor heat exchanger can be represented by using the duration, the frosting speed of the current outdoor heat exchanger can be determined by comparing the duration with the preset duration, and the maximum operating frequency can be adjusted according to the comparison result, so that the adjusted maximum operating frequency is matched with the actual use working condition of the air conditioner.
In any of the above embodiments, during the defrosting cycle, the defrosting mode is operated, that is, when the air conditioner operates according to the defrosting mode, frost formed on the outdoor heat exchanger can be removed.
In any of the above embodiments, the preset time duration is a comparison parameter for measuring the frosting speed of the outdoor heat exchanger, and the specific value of the preset time duration may be set according to the use scenario of the air conditioner.
In any of the above embodiments, the preset time period may also be an empirical value, and is set by a user.
In any of the above embodiments, the maximum operating frequency may be an adjustment result of the last adjustment of the maximum operating frequency of the air conditioner, that is, the maximum operating frequency is an adjustment result of the maximum operating frequency in the last adjustment process.
In any of the above embodiments, the maximum operating frequency is a default starting frequency of the compressor.
In any of the above embodiments, the maximum operating frequency may be a maximum operating frequency of the compressor.
Example two
In the above embodiment, the maximum operating frequency is adjusted to be lower based on the duration being less than the first preset duration.
In this embodiment, under the condition that the duration is less than the first preset duration, it is determined that the maximum operating frequency of the current compressor is higher, that is, the frosting speed on the current outdoor heat exchanger is higher and is not adaptive to the current use condition of the air conditioner, and the frosting speed on the outdoor heat exchanger is reduced by reducing the value of the maximum operating frequency, so that the operating parameters of the air conditioner are adaptive to the current use condition of the air conditioner, and the capacity output of the air conditioner is more stable.
In addition, under the condition that the use scene of the air conditioner is not changed, namely the use working condition of the air conditioner is not changed, the duration time can be prolonged while the maximum operation frequency is reduced, so that the starting frequency of a defrosting mode is reduced, the frequency of switching the four-way valve by the air conditioner is reduced, and the service life of the air conditioner is prolonged.
In addition, the time interval for the air conditioner to repeatedly start the defrosting mode is prolonged, so that the influence of the frequent operation of the defrosting mode on the use of a user during the operation of the air conditioner is reduced.
In any of the above embodiments, as shown in fig. 2, the reducing the maximum operating frequency comprises:
step 202, acquiring a first adjustment coefficient;
step 204, determining a first adjusting value according to the first adjusting coefficient and the maximum operating frequency;
step 206, the maximum operating frequency is reduced according to the first adjustment value.
In the embodiment, a specific scheme for reducing the maximum operating frequency is specifically defined, and the operation according to the scheme is performed, so that the adjustment of the maximum operating frequency can be matched with the current operating state of the air conditioner, and the influence on the operating stability of the air conditioner due to overlarge adjustment amplitude of the maximum operating frequency is avoided.
Specifically, the first adjustment coefficient is a constant, and a value range thereof may be set according to a usage scenario of the air conditioner.
In one embodiment, the first adjustment factor is greater than zero and less than 1.
In one embodiment, the first adjustment value is a product of the first adjustment coefficient and the maximum operating frequency.
In one embodiment, the maximum operating frequency is adjusted to be lower by the first adjustment value, which is to be understood as the first adjustment value is decreased on the basis of the maximum operating frequency in order to obtain the adjusted maximum operating frequency.
EXAMPLE III
In any of the above embodiments, the maximum operating frequency is increased based on the duration being greater than the second preset duration.
In this embodiment, when the duration is longer than the second preset duration, the maximum operating frequency of the current compressor is determined to be lower and not adapted to the current operating condition of the air conditioner, and the operating parameters of the air conditioner are adapted to the current operating condition of the air conditioner by increasing the value of the maximum operating frequency, so that the capacity output of the air conditioner is more stable.
In any of the above embodiments, as shown in fig. 3, the increasing the maximum operating frequency includes:
step 302, acquiring a second adjustment coefficient;
step 304, determining a second adjustment value according to the second adjustment coefficient and the maximum operating frequency;
and step 306, increasing the maximum operation frequency according to the second adjusting value.
In the embodiment, a specific scheme for increasing the maximum operating frequency is specifically defined, and the operation according to the scheme is performed, so that the adjustment of the maximum operating frequency can be matched with the current operating state of the air conditioner, and the influence on the operating stability of the air conditioner due to overlarge adjustment amplitude of the maximum operating frequency is avoided.
Specifically, the second adjustment coefficient is a constant, and a value range thereof may be set according to a usage scenario of the air conditioner.
In one embodiment, the second adjustment factor is greater than zero and less than 1.
In one embodiment, the second adjustment value is a product of the second adjustment coefficient and the maximum operating frequency.
In one embodiment, increasing the maximum operating frequency by the second adjustment value may be understood as increasing the second adjustment value on the basis of the maximum operating frequency to obtain an adjusted maximum operating frequency.
Example four
In any of the above embodiments, further comprising: determining a sum of the second adjustment value and the maximum operating frequency; and taking the default maximum operation frequency as the adjusted maximum operation frequency based on the sum value being greater than or equal to the default maximum operation frequency.
In this embodiment, in consideration of the fact that the adjusted maximum operating frequency may exceed the default maximum operating frequency in the process of increasing the maximum operating frequency, it is obvious that the maximum operating frequency already exceeds the frequency at which the compressor can operate in the case that the maximum operating frequency exceeds the default maximum operating frequency, and if the compressor is operated according to the adjusted maximum operating frequency, the probability of the compressor failing may be increased.
According to the embodiment of the application, under the condition that the sum value is greater than or equal to the default maximum operation frequency, the default maximum operation frequency is directly used as the adjusted maximum operation frequency, so that the condition is avoided, and the operation reliability of the air conditioner is improved.
In any of the above embodiments, the second predetermined duration is greater than the first predetermined duration.
In any of the above embodiments, the maximum operating frequency is maintained based on the duration being greater than or equal to the first preset duration and less than or equal to the second preset duration.
In this embodiment, the adjustment frequency of the maximum operating frequency is reduced by keeping the maximum operating frequency constant.
EXAMPLE five
In any of the above embodiments, the maximum operating frequency is adjusted to the default maximum operating frequency based on the duration being greater than the third preset duration.
In any of the above embodiments, if the duration is not less than the third preset duration, it is determined that the maximum operating frequency is improperly set, so that the heating efficiency of the air conditioner during the operation process is too low, and the performance of the air conditioner is seriously affected.
EXAMPLE six
In any of the above embodiments, before obtaining the maximum operating frequency of the compressor and the duration of the current defrost cycle in the current defrost cycle, the method further includes: acquiring historical operation information of the air conditioner; and based on the historical operation information, the maximum operation frequency is reduced when the preset condition is met.
In this embodiment, historical operation information of the air conditioner is acquired so as to determine whether the maximum operation frequency needs to be adjusted according to the historical operation information, and if the historical operation information meets or meets a preset condition, the maximum operation frequency is determined to need to be adjusted.
In the process, the starting condition for adjusting the maximum running frequency of the compressor is given, the influence of random adjustment of the maximum running frequency of the compressor on the stability of the air conditioner is avoided, and the stability of the air conditioner in the running process is improved through the limitation.
In any of the above embodiments, the maximum operating frequency is decreased so as to improve the stability of the air conditioner during operation by decreasing the maximum operating frequency in the case where the frosting speed of the outdoor heat exchanger of the air conditioner is too high.
In any of the above embodiments, the historical operating information includes N historical durations, where N is a positive integer greater than or equal to 1; and determining that the historical operation information meets the preset condition based on the fact that the N historical duration times are all smaller than a first preset duration time.
In the embodiment, a determination mode whether the historical operation information meets or meets the preset condition is given, the historical duration of the air conditioner in the defrosting period every time in the operation process is obtained, so that whether the maximum operation frequency of the compressor needs to be adjusted is determined by observing the historical duration, in the process, a starting condition for adjusting the maximum operation frequency of the compressor is given, the influence of random adjustment of the maximum operation frequency of the compressor on the stability of the air conditioner is avoided, and the stability of the air conditioner in the operation process is improved through the limitation.
In one embodiment, the N historical durations are data sequences arranged in time sequence, and the monitoring condition of the air conditioner operation process can be adjusted to the maximum operation frequency by limiting the N historical durations to have the characteristics, so that the reliability of the adjustment result is improved.
EXAMPLE seven
In any of the above embodiments, the duration is the time difference between the last time the air conditioner exits the defrost mode and the next time the air conditioner enters the defrost mode; or the duration is the time difference from the last time the air conditioner exits the defrosting mode to the next time the air conditioner exits the defrosting mode; or the duration is the time difference from the last time the air conditioner enters the defrosting mode to the next time the air conditioner enters the defrosting mode.
Example eight
According to an embodiment of the present invention, as shown in fig. 4, the present invention provides a frequency adjustment apparatus 400 for a compressor in an air conditioner, including: an obtaining unit 402, configured to obtain a maximum operating frequency of the compressor and a duration of a current defrosting cycle in the current defrosting cycle; and an adjusting unit 404, configured to adjust the maximum operating frequency according to a comparison result between the duration and the preset duration, so as to use the adjusted maximum operating frequency as the maximum operable frequency of the compressor in the next defrosting cycle.
The embodiment of the application provides a frequency adjusting device 400, and an air conditioner applying the frequency adjusting device can realize the adjustment of the maximum operating frequency of a compressor, so that the adjusted maximum operating frequency is adapted to the actual operating condition of the air conditioner, and meanwhile, the average heat exchange capacity of the air conditioner in a defrosting period is improved, for example, the average heat exchange capacity is improved by 5 to 10 percent. Therefore, the frosting speed of the outdoor heat exchanger can be reduced, so that the capacity output of the air conditioner is more stable, and the problems existing in the prior embodiment are overcome.
The embodiments of the present application are realized based on the following principles, specifically including:
under the condition that the maximum operation frequency of the compressor is higher, the operation pressure of the air conditioner is higher, correspondingly, the frosting speed on the outdoor heat exchanger of the air conditioner is higher, and on the basis, the frosting speed of the outdoor heat exchanger can be delayed by reducing the maximum operation frequency of the compressor.
Under the same working condition of the air conditioner, the higher the frosting speed of the outdoor heat exchanger, the more frequently the air conditioner enters the defrosting mode, and the smaller the corresponding duration, so the frosting speed of the outdoor heat exchanger can be represented by using the duration, the frosting speed of the current outdoor heat exchanger can be determined by comparing the duration with the preset duration, and the maximum operating frequency can be adjusted according to the comparison result, so that the adjusted maximum operating frequency is matched with the actual use working condition of the air conditioner.
In any of the above embodiments, during the defrosting cycle, the defrosting mode is operated, that is, when the air conditioner operates according to the defrosting mode, frost formed on the outdoor heat exchanger can be removed.
In any of the above embodiments, the preset time duration is a comparison parameter for measuring the frosting speed of the outdoor heat exchanger, and the specific value of the preset time duration may be set according to the use scenario of the air conditioner.
In any of the above embodiments, the preset time period may also be an empirical value, and is set by a user.
In any of the above embodiments, the maximum operating frequency may be an adjustment result of the last adjustment of the maximum operating frequency of the air conditioner, that is, the maximum operating frequency is an adjustment result of the maximum operating frequency in the last adjustment process.
In any of the above embodiments, the maximum operating frequency is a default starting frequency of the compressor.
In any of the above embodiments, the maximum operating frequency may be a maximum operating frequency of the compressor.
In one embodiment, the adjusting unit 404 is specifically configured to: and based on the duration being less than the first preset duration, reducing the maximum operating frequency.
In this embodiment, under the condition that the duration is less than the first preset duration, it is determined that the maximum operating frequency of the current compressor is higher, that is, the frosting speed on the current outdoor heat exchanger is higher and is not adaptive to the current use condition of the air conditioner, and the frosting speed on the outdoor heat exchanger is reduced by reducing the value of the maximum operating frequency, so that the operating parameters of the air conditioner are adaptive to the current use condition of the air conditioner, and the capacity output of the air conditioner is more stable.
In addition, under the condition that the use scene of the air conditioner is not changed, namely the use working condition of the air conditioner is not changed, the duration time can be prolonged while the maximum operation frequency is reduced, so that the starting frequency of a defrosting mode is reduced, the frequency of switching the four-way valve by the air conditioner is reduced, and the service life of the air conditioner is prolonged.
In addition, the time interval for the air conditioner to repeatedly start the defrosting mode is prolonged, so that the influence of the frequent operation of the defrosting mode on the use of a user during the operation of the air conditioner is reduced.
In one embodiment, the adjusting unit 404 is specifically configured to: acquiring a first adjustment coefficient; determining a first adjusting value according to the first adjusting coefficient and the maximum operating frequency; the maximum operating frequency is adjusted lower according to the first adjustment value.
In the embodiment, a specific scheme for reducing the maximum operating frequency is specifically defined, and the operation according to the scheme is performed, so that the adjustment of the maximum operating frequency can be matched with the current operating state of the air conditioner, and the influence on the operating stability of the air conditioner due to overlarge adjustment amplitude of the maximum operating frequency is avoided.
Specifically, the first adjustment coefficient is a constant, and a value range thereof may be set according to a usage scenario of the air conditioner.
In one embodiment, the first adjustment factor is greater than zero and less than 1.
In one embodiment, the first adjustment value is a product of the first adjustment coefficient and the maximum operating frequency.
In one embodiment, the maximum operating frequency is adjusted to be lower by the first adjustment value, which is to be understood as the first adjustment value is decreased on the basis of the maximum operating frequency in order to obtain the adjusted maximum operating frequency.
In one embodiment, the adjusting unit 404 is specifically configured to: and increasing the maximum operation frequency based on the duration being greater than the second preset duration.
In this embodiment, when the duration is longer than the second preset duration, the maximum operating frequency of the current compressor is determined to be lower and not adapted to the current operating condition of the air conditioner, and the operating parameters of the air conditioner are adapted to the current operating condition of the air conditioner by increasing the value of the maximum operating frequency, so that the capacity output of the air conditioner is more stable.
In one embodiment, the adjusting unit 404 is specifically configured to: acquiring a second adjustment coefficient; determining a second adjusting value according to the second adjusting coefficient and the maximum operating frequency; and increasing the maximum operation frequency according to the second adjustment value.
In the embodiment, a specific scheme for increasing the maximum operating frequency is specifically defined, and the operation according to the scheme is performed, so that the adjustment of the maximum operating frequency can be matched with the current operating state of the air conditioner, and the influence on the operating stability of the air conditioner due to overlarge adjustment amplitude of the maximum operating frequency is avoided.
Specifically, the second adjustment coefficient is a constant, and a value range thereof may be set according to a usage scenario of the air conditioner.
In one embodiment, the second adjustment factor is greater than zero and less than 1.
In one embodiment, the second adjustment value is a product of the second adjustment coefficient and the maximum operating frequency.
In one embodiment, increasing the maximum operating frequency by the second adjustment value may be understood as increasing the second adjustment value on the basis of the maximum operating frequency to obtain an adjusted maximum operating frequency.
In one embodiment, the adjusting unit 404 is specifically configured to: determining a sum of the second adjustment value and the maximum operating frequency; and taking the default maximum operation frequency as the adjusted maximum operation frequency based on the sum value being greater than or equal to the default maximum operation frequency.
In this embodiment, in consideration of the fact that the adjusted maximum operating frequency may exceed the default maximum operating frequency in the process of increasing the maximum operating frequency, it is obvious that the maximum operating frequency already exceeds the frequency at which the compressor can operate in the case that the maximum operating frequency exceeds the default maximum operating frequency, and if the compressor is operated according to the adjusted maximum operating frequency, the probability of the compressor failing may be increased.
According to the embodiment of the application, under the condition that the sum value is greater than or equal to the default maximum operation frequency, the default maximum operation frequency is directly used as the adjusted maximum operation frequency, so that the condition is avoided, and the operation reliability of the air conditioner is improved.
In any of the above embodiments, the second predetermined duration is greater than the first predetermined duration.
In one embodiment, the adjusting unit 404 is specifically configured to: and maintaining the maximum operation frequency unchanged based on the duration being greater than or equal to the first preset duration and less than or equal to the second preset duration.
In this embodiment, the adjustment frequency of the maximum operating frequency is reduced by keeping the maximum operating frequency constant.
In one embodiment, the adjusting unit 404 is specifically configured to: and adjusting the maximum operation frequency to be the default maximum operation frequency based on the duration being greater than the third preset duration.
In any of the above embodiments, if the duration is not less than the third preset duration, it is determined that the maximum operating frequency is improperly set, so that the heating efficiency of the air conditioner during the operation process is too low, and the performance of the air conditioner is seriously affected.
In one embodiment, the adjusting unit 404 is specifically configured to: acquiring historical operation information of the air conditioner before the maximum operation frequency of the compressor and the duration of the current defrosting period in the current defrosting period; and based on the historical operation information, the maximum operation frequency is reduced when the preset condition is met.
In this embodiment, historical operation information of the air conditioner is acquired so as to determine whether the maximum operation frequency needs to be adjusted according to the historical operation information, and if the historical operation information meets or meets a preset condition, the maximum operation frequency is determined to need to be adjusted.
In the process, the starting condition for adjusting the maximum running frequency of the compressor is given, the influence of random adjustment of the maximum running frequency of the compressor on the stability of the air conditioner is avoided, and the stability of the air conditioner in the running process is improved through the limitation.
In any of the above embodiments, the maximum operating frequency is decreased so as to improve the stability of the air conditioner during operation by decreasing the maximum operating frequency in the case where the frosting speed of the outdoor heat exchanger of the air conditioner is too high.
In one embodiment, the historical operating information includes N historical durations, where N is a positive integer greater than or equal to 1; and determining that the historical operation information meets the preset condition based on the fact that the N historical duration times are all smaller than a first preset duration time.
In the embodiment, a determination mode whether the historical operation information meets or meets the preset condition is given, the historical duration of the air conditioner in the defrosting period every time in the operation process is obtained, so that whether the maximum operation frequency of the compressor needs to be adjusted is determined by observing the historical duration, in the process, a starting condition for adjusting the maximum operation frequency of the compressor is given, the influence of random adjustment of the maximum operation frequency of the compressor on the stability of the air conditioner is avoided, and the stability of the air conditioner in the operation process is improved through the limitation.
In one embodiment, the N historical durations are data sequences arranged in time sequence, and the monitoring condition of the air conditioner operation process can be adjusted to the maximum operation frequency by limiting the N historical durations to have the characteristics, so that the reliability of the adjustment result is improved.
In one embodiment, the duration is the time difference between the last time the air conditioner exits the defrosting mode and the next time the air conditioner enters the defrosting mode; or the duration is the time difference from the last time the air conditioner exits the defrosting mode to the next time the air conditioner exits the defrosting mode; or the duration is the time difference from the last time the air conditioner enters the defrosting mode to the next time the air conditioner enters the defrosting mode.
In any of the above embodiments, the current defrost cycle is the time from the last time the air conditioner exited the defrost mode to the next time the air conditioner entered the defrost mode; or the time from the last time the air conditioner exits the defrosting mode to the next time the air conditioner exits the defrosting mode; or the time from the last time the air conditioner enters the defrosting mode to the next time the air conditioner enters the defrosting mode.
Example nine
According to an embodiment of the present invention, as shown in fig. 5, the present invention provides a frequency adjustment apparatus 500 for a compressor in an air conditioner, including: a memory 502 and a processor 504, wherein the memory 502 stores programs, and the processor 504 implements the steps of the frequency adjustment method as described above when executing the programs.
The embodiment of the present application provides a frequency adjustment apparatus 500, in the frequency adjustment apparatus 500, when the processor 504 runs according to a program or an instruction stored in the memory 502, the steps of the frequency adjustment method can be implemented, so that all the beneficial technical effects of the frequency adjustment method are achieved, and are not described herein again.
Example ten
According to an embodiment of the present invention, there is provided a readable storage medium on which a program or instructions are stored, which when executed by a processor, implement the steps of the frequency adjustment method as in any one of the above.
The embodiment of the present application provides a readable storage medium, which can implement the steps of the frequency adjustment method as described above, and therefore, has all the beneficial technical effects of the frequency adjustment method.
EXAMPLE eleven
According to an embodiment of the present invention, there is provided an air conditioner including: a frequency adjustment device as described above; or a readable storage medium as described above.
The embodiment of the application provides an air conditioner, and the adjustment of the maximum operating frequency of compressor can be realized to this air conditioner to the maximum operating frequency after the adjustment and the actual use operating mode looks adaptation of air conditioner, specifically, as shown in fig. 6, the average heat transfer ability of air conditioner in the cycle of defrosting has been improved, consequently, can slow down outdoor heat exchanger's the speed of frosting, thereby make the ability output of air conditioner more steady, the problem that exists in the current embodiment has been overcome.
The air conditioner comprises an indoor unit and an outdoor unit, wherein a compressor is arranged in the outdoor unit, the compressor is located on a refrigerant loop between the indoor unit and the outdoor unit, the higher the maximum operation frequency of the compressor is, the higher the operation pressure of the air conditioner is, and correspondingly, the higher the frosting speed on an outdoor heat exchanger of the air conditioner is, and on the basis, the frosting speed of the outdoor heat exchanger can be delayed by reducing the maximum operation frequency of the compressor.
Under the same working condition of the air conditioner, the higher the frosting speed of the outdoor heat exchanger, the more frequently the air conditioner enters the defrosting mode, and the smaller the corresponding duration, so the frosting speed of the outdoor heat exchanger can be represented by using the duration, the frosting speed of the current outdoor heat exchanger can be determined by comparing the duration with the preset duration, and the maximum operating frequency can be adjusted according to the comparison result, so that the adjusted maximum operating frequency is matched with the actual use working condition of the air conditioner.
In any of the above embodiments, the defrosting mode, i.e., when the air conditioner operates in the defrosting mode, frost formed on the outdoor heat exchanger can be removed.
In any of the above embodiments, the preset time duration is a comparison parameter for measuring the frosting speed of the outdoor heat exchanger, and the specific value of the preset time duration may be set according to the use scenario of the air conditioner.
In any of the above embodiments, the preset time period may also be an empirical value, and is set by a user.
In any of the above embodiments, the maximum operating frequency may be an adjustment result of the last adjustment of the maximum operating frequency of the air conditioner, that is, the maximum operating frequency is an adjustment result of the maximum operating frequency in the last adjustment process.
In any of the above embodiments, the maximum operating frequency is a default starting frequency of the compressor.
In any of the above embodiments, the maximum operating frequency may be a maximum operating frequency of the compressor.
In any of the above embodiments, the air conditioner may be a household air conditioner, a central air conditioner, or the like.
In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means 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 present invention. In the present invention, 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.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to 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 (15)

1. A frequency adjustment method for a compressor in an air conditioner, comprising:
acquiring the maximum operating frequency of the compressor and the duration of the current defrosting period in the current defrosting period;
and adjusting the maximum operating frequency according to the comparison result of the duration and the preset duration so as to take the adjusted maximum operating frequency as the maximum operable frequency of the compressor in the next defrosting period.
2. The frequency adjustment method of claim 1,
and based on the fact that the duration is smaller than a first preset duration, reducing the maximum operation frequency.
3. The method of claim 2, wherein reducing the maximum operating frequency comprises:
acquiring a first adjustment coefficient;
determining a first adjusting value according to the first adjusting coefficient and the maximum running frequency;
and reducing the maximum operation frequency according to the first adjustment value.
4. The frequency adjustment method of claim 1,
and increasing the maximum operation frequency based on the fact that the duration is longer than a second preset duration.
5. The frequency adjustment method of claim 4, wherein increasing the maximum operating frequency comprises:
acquiring a second adjustment coefficient;
determining a second adjustment value according to the second adjustment coefficient and the maximum operation frequency;
and increasing the maximum operating frequency according to the second adjusting value.
6. The method of claim 5, further comprising:
determining a sum of the second adjustment value and the maximum operating frequency;
and taking the default maximum operation frequency as the adjusted maximum operation frequency based on the condition that the sum value is greater than or equal to the default maximum operation frequency.
7. The frequency adjustment method of claim 1,
and maintaining the maximum operation frequency unchanged based on the duration being greater than or equal to a first preset duration and less than or equal to a second preset duration.
8. The frequency adjustment method of claim 1,
and adjusting the maximum operation frequency to be a default maximum operation frequency based on the duration being greater than a third preset duration.
9. The frequency adjustment method according to any one of claims 1 to 8, wherein the obtaining of the maximum operating frequency of the compressor and the duration of the current defrost cycle in the current defrost cycle is preceded by:
acquiring historical operation information of the air conditioner;
and reducing the maximum operation frequency based on the fact that the historical operation information meets a preset condition.
10. The frequency adjustment method of claim 9, wherein the historical operating information comprises N historical durations, wherein N is a positive integer greater than or equal to 1;
and determining that the historical operation information meets a preset condition based on the fact that the N historical duration times are all smaller than a first preset duration time.
11. The frequency adjustment method according to any one of claims 1 to 8,
the duration is the time difference from the last time the air conditioner exits the defrosting mode to the next time the air conditioner enters the defrosting mode; or
The duration is the time difference from the last time the air conditioner exits the defrosting mode to the next time the air conditioner exits the defrosting mode; or
The duration is the time difference from the last time the air conditioner enters the defrosting mode to the next time the air conditioner enters the defrosting mode.
12. A frequency adjustment device for a compressor in an air conditioner, comprising:
the defrosting control device comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the maximum operating frequency of the compressor and the duration of the current defrosting period in the current defrosting period;
and the adjusting unit is used for adjusting the maximum operating frequency according to the comparison result of the duration and the preset duration so as to take the adjusted maximum operating frequency as the maximum operable frequency of the compressor in the next defrosting period.
13. A frequency adjustment device for a compressor in an air conditioner, comprising: a memory storing a program and a processor implementing the steps of the frequency adjustment method according to any one of claims 1 to 11 when executing the program.
14. A readable storage medium, on which a program or instructions are stored, which when executed by a processor implement the steps of the frequency adjustment method according to any one of claims 1 to 11.
15. An air conditioner, comprising:
the frequency adjustment apparatus of claim 12 or 13; or
The readable storage medium of claim 14.
CN202111254055.1A 2021-10-27 2021-10-27 Frequency adjusting method and device, readable storage medium and air conditioner Pending CN113819579A (en)

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