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WO2018176332A1 - 压缩机控制方法和装置 - Google Patents

压缩机控制方法和装置 Download PDF

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Publication number
WO2018176332A1
WO2018176332A1 PCT/CN2017/078823 CN2017078823W WO2018176332A1 WO 2018176332 A1 WO2018176332 A1 WO 2018176332A1 CN 2017078823 W CN2017078823 W CN 2017078823W WO 2018176332 A1 WO2018176332 A1 WO 2018176332A1
Authority
WO
WIPO (PCT)
Prior art keywords
compressor
shutdown
preset
frequency
protections
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/078823
Other languages
English (en)
French (fr)
Inventor
王勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
Original Assignee
Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Midea Group Co Ltd, GD Midea Air Conditioning Equipment Co Ltd filed Critical Midea Group Co Ltd
Priority to EP17898352.4A priority Critical patent/EP3425295B1/en
Priority to CA3021241A priority patent/CA3021241C/en
Priority to PCT/CN2017/078823 priority patent/WO2018176332A1/zh
Priority to US15/981,729 priority patent/US10767881B2/en
Publication of WO2018176332A1 publication Critical patent/WO2018176332A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • F25B49/025—Motor control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/005—Arrangement or mounting of control or safety devices of 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
    • F25B2500/00—Problems to be solved
    • F25B2500/06—Damage
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/19—Calculation of parameters
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/29—High ambient temperatures
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/31—Low ambient temperatures
    • 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
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0251—Compressor control by controlling speed with on-off operation
    • 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
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0253—Compressor control by controlling speed with variable speed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the present invention relates to the field of air conditioner technology, and in particular, to a compressor control method and apparatus.
  • the indoor heat exchanger ie indoor unit
  • the indoor heat exchange in the cooling mode occurs in the heating mode.
  • the compressor is often shut down for protection.
  • the compressor When the compressor is started, it needs to run at a preset starting frequency of about 60 or 90 Hz for more than 1 minute. However, according to such a starting frequency, when the outdoor high temperature heating operation and the outdoor low temperature cooling operation are performed, the evaporator temperature quickly reaches a high level. The low temperature protection value, the system protects once every 5 ⁇ 7 minutes, causing the compressor to start frequently.
  • the invention provides a compressor control method and device, the main purpose of which is to solve the technical problem of high outdoor temperature operation heating mode and frequent starting of the compressor when the cooling mode is operated at a lower outdoor temperature.
  • the present invention provides a compressor control method, the compressor control method comprising the steps of:
  • the starting frequency of the compressor is decreased, so that when the compressor is restarted, the operation is started according to the reduced starting frequency.
  • the step of reducing the starting frequency of the compressor includes:
  • the compressor control method further includes:
  • the starting frequency of the compressor is restored to a preset starting frequency, and the number of shutdown protections of the compressor is cleared.
  • the compressor control method further includes the steps of:
  • the pre-stored first decrease amplitude is reduced.
  • the step of reducing the pre-stored first decrease amplitude comprises:
  • the pre-stored first decrease amplitude is reduced.
  • the duration of operation of the compressor at the starting frequency is reduced to initiate and operate the reduced duration for the compressor to restart at the reduced starting frequency.
  • the step of reducing the duration of operation of the compressor according to the startup frequency comprises:
  • the compressor control method further includes:
  • the startup frequency of the compressor is restored to a preset startup frequency and the duration of operation of the compressor according to the startup frequency is restored to a preset operation duration At the same time, the number of shutdown protections of the compressor is cleared.
  • the compressor control method further includes:
  • the pre-stored first decrease amplitude and/or the second decrease width are reduced.
  • the compressor control method further includes the steps of:
  • the present invention also provides a compressor control device, the compressor control device comprising:
  • An update module configured to update the number of shutdown protections of the compressor during the current operation of the air conditioner after the compressor shutdown protection
  • a frequency adjustment module configured to reduce a starting frequency of the compressor when the number of times of shutdown protection of the compressor is greater than a first preset number, so that when the compressor restarts, start the operation according to the reduced starting frequency .
  • the frequency adjustment module is further configured to reduce the preset startup frequency according to the first decrease amplitude corresponding to the current number of shutdown protections, to obtain the reduced startup frequency, wherein the shutdown protection frequency is greater.
  • the first decrease is greater.
  • the compressor control device further includes:
  • a first determining module configured to determine, when the number of times of shutdown protection of the compressor is greater than a first preset number of times, whether the number of the shutdown protection times is less than a second preset number, the second preset number of times being greater than the first The preset number of times;
  • the frequency adjustment module is further configured to: when the number of shutdown protections is less than the second preset number of times, reduce a startup frequency of the compressor, so that when the compressor restarts, start the operation according to the reduced startup frequency. And recovering the starting frequency of the compressor to a preset starting frequency when the number of shutdown protections is greater than or equal to the second predetermined number of times;
  • the first clearing module is configured to clear the number of shutdown protections of the compressor when the number of shutdown protections is less than the second predetermined number of times.
  • the compressor control device further includes:
  • the first amplitude adjustment module is configured to reduce the pre-stored first decrease amplitude when the refrigerant leak is detected.
  • the first amplitude adjustment module includes:
  • the obtaining unit is configured to acquire the number of times the refrigerant leakage is detected when the refrigerant leak is detected;
  • the amplitude adjusting unit is configured to reduce the pre-stored first falling amplitude when the number of times the refrigerant leakage is detected is greater than a preset number of times.
  • the compressor control device further includes:
  • a time adjustment module configured to reduce a duration of operation of the compressor according to a starting frequency when the number of times of shutdown protection of the compressor is greater than a first preset number, so that when the compressor restarts, start according to the reduced starting frequency And run the reduced duration.
  • the duration adjustment module is further configured to: when the number of times of shutdown protection of the compressor is greater than the first preset number of times, reduce the preset running time according to the second decreasing amplitude corresponding to the current number of shutdown protection times, to obtain a reduction The length of time after which the compressor operates according to the starting frequency, wherein the second number of shutdown protections is greater, and the second decreasing amplitude is larger.
  • the compressor control device further includes:
  • a second determining module configured to determine, when the number of times of shutdown protection of the compressor is greater than a first preset number of times, whether the number of the shutdown protection times is less than a second preset number, the second preset number of times being greater than the first The preset number of times;
  • the frequency adjustment module is further configured to: when the number of shutdown protections is less than the second preset number of times, reduce a startup frequency of the compressor, and when the number of shutdown protections is greater than or equal to the second preset number of times Recovering the starting frequency of the compressor to a preset starting frequency
  • the duration adjustment module is further configured to: when the number of times of the shutdown protection is less than the second preset number, reduce the duration of operation of the compressor according to the startup frequency, so that when the compressor restarts, start according to the reduced startup frequency Running the reduced duration, and when the number of shutdown protections is greater than or equal to the second predetermined number of times, restoring the duration of operation of the compressor according to the startup frequency to a preset operation duration;
  • the second clearing module is configured to clear the number of shutdown protections of the compressor when the number of shutdown protections is greater than or equal to the second predetermined number of times.
  • the compressor control device further includes:
  • the second amplitude adjustment module is configured to reduce the pre-stored first decrease amplitude and/or the second decrease width when detecting refrigerant leakage.
  • the compressor control method and device provided by the present invention update the number of shutdown protections of the compressor during the current operation of the air conditioner after the compressor is shut down, and the number of shutdown protections of the compressor is greater than the first
  • the starting frequency of the compressor is lowered, so that when the compressor is restarted, the starting operation is started according to the reduced starting frequency, and the starting frequency of the compressor is lowered to make the compressor reach a high and low temperature slowly.
  • FIG. 1 is a schematic flow chart of a first embodiment of a compressor control method according to the present invention
  • FIG. 2 is a schematic diagram of functional modules of a first embodiment of a compressor control device of the present invention
  • FIG. 3 is a schematic diagram of functional modules of a third embodiment of a compressor control device of the present invention.
  • the present invention provides a compressor control method.
  • FIG. 1 is a schematic flow chart of a first embodiment of a compressor control method according to the present invention.
  • the embodiment provides a compressor control method, and the compressor control method includes:
  • Step S10 after the compressor shutdown protection, update the number of shutdown protections of the compressor during the current operation of the air conditioner;
  • the shutdown protection in this embodiment refers to the shutdown protection of the compressor when the temperature of the indoor heat exchanger exceeds the preset high temperature protection temperature in the heating mode, or the temperature of the indoor heat exchanger of the air conditioner in the cooling mode
  • the compressor is shut down when it is lower than the preset low temperature protection temperature.
  • the temperature of the indoor heat exchanger can be detected in real time or at a time.
  • the compressor is controlled to reduce the frequency at the compressor.
  • the compressor is controlled to stop the operation, that is, the compressor is restarted; similarly, in the air conditioner refrigeration operation, if the indoor heat exchanger If the temperature is lower than the preset low temperature protection temperature, the compressor is controlled to reduce the frequency.
  • the compressor frequency is reduced to the preset frequency and the temperature of the indoor heat exchanger is still less than the preset low temperature protection temperature, the compressor is controlled to stop and restart. .
  • the compressor restart does not include the case where the air conditioner is powered off and restarted.
  • the air conditioner counts the operation process from start-up to shutdown every time.
  • the number of shutdown protections is cleared every time the air conditioner is turned off, or the number of stored shutdown protections is cleared after the air conditioner is normally turned on. After the air conditioner is turned on, each shutdown protection adds one to the number of shutdown protections.
  • step S20 when the number of times of shutdown protection of the compressor is greater than the first preset number of times, the starting frequency of the compressor is decreased, so that when the compressor is restarted, the operation is started according to the reduced starting frequency.
  • the first preset number of times may be set by the developer according to needs, for example, the first preset number of times may be 2, that is, the third frequency of the shutdown is to reduce the starting frequency of the compressor.
  • the number of times of shutdown protection is greater than the first preset number, the same frequency can be reduced on the basis of the preset starting frequency.
  • the first preset number can be 2, that is, when the third shutdown protection is performed, the starting frequency is The preset starting frequency is reduced from 60HZ to 57HZ.
  • the fourth shutdown protection the starting frequency is reduced from 60HZ to 57HZ by the preset starting frequency, and so on, until the air conditioner is turned off; or, it can be protected at each stop.
  • the preset starting frequency is used, the different frequencies are reduced.
  • the first preset number can be 2, and the preset starting frequency is 60 Hz, that is, when the third shutdown protection is performed, the frequency is reduced by 20%.
  • the compressor adjusts the starting frequency after the shutdown protection, and then runs according to the adjusted starting frequency when the shutdown protection is restarted.
  • the running time of running according to the adjusted starting frequency can be set by the developer as needed.
  • the number of shutdown protections of the compressor is continuously accumulated, if the number of shutdown protections of the compressor is not cleared when the air conditioner is powered off, the number of shutdown protections will be greater than the first preset each time the air conditioner is started. The number of times, that is, when the air conditioner is powered off, the number of the shutdown protections is cleared.
  • the power failure of the air conditioner may mean that the air conditioner is turned off or the air conditioner is powered off.
  • the compressor control method disclosed in the embodiment after the compressor shutdown protection, updates the number of shutdown protections of the compressor during the current operation of the air conditioner, and the number of shutdown protection of the compressor is greater than the first preset
  • the starting frequency of the compressor is lowered to start the operation according to the reduced starting frequency when the compressor is restarted, and the compressor is slowed to achieve high and low temperature protection by reducing the starting frequency of the compressor. Value, reducing the number of compressor restarts.
  • the step S20 includes:
  • the step of reducing the starting frequency of the compressor includes:
  • the first decreasing amplitude may be a frequency value or a proportional value.
  • the first reduction is larger due to the greater the number of shutdown protections, and the situation that the pressure reduction is too large may cause the compressor oil surface to fail to meet the standard and not return liquid. Then, when the frequency is reduced to the limit, the compressor is controlled to re-run according to the preset starting frequency, that is, after step S10, the following:
  • step S20 is performed;
  • the starting frequency of the compressor is restored to a preset starting frequency, and the number of shutdown protections of the compressor is cleared.
  • the frequency reduction is 25%
  • the frequency reduction is 30%
  • the starting frequency is 36HZ.
  • step S10 the starting frequency of the compressor is restored to the preset starting frequency, and the number of shutdown protections of the compressor is cleared to zero, and the above process is restarted, that is, step S10 is performed.
  • the compressor control method further includes: when the refrigerant leakage is detected The first falling amplitude of the pre-stored is reduced, and the manner that the starting frequency is excessively decreased causes the liquid return to be non-returned or the liquid level to fail to reach the standard is avoided by reducing the first decreasing amplitude.
  • the number of times the refrigerant leakage is detected is detected when the refrigerant leakage is detected; and the first decrease of the pre-stored is decreased when the number of times the refrigerant leakage is detected is greater than the preset number of times Amplitude.
  • the startup frequency of the compressor may not be restored to the preset startup frequency, that is, the current startup frequency of the compressor is increased, and the number of restarts of the compressor is cleared. Zero until the starting frequency of the compressor reaches the preset starting frequency, and step S10 is restarted.
  • different schemes can be used to implement the preset startup frequency setting, for example, the current startup frequency can be maintained, and After running the preset number of times according to the current starting frequency, the starting frequency of the air conditioner is restored to the preset starting frequency, and the number of compressor shutdown restarts is cleared.
  • a third embodiment of the compressor control method of the present invention is proposed based on the first or second embodiment.
  • the steps are performed:
  • the duration of operation of the compressor at the starting frequency is reduced to initiate and operate the reduced duration for the compressor to restart at the reduced starting frequency.
  • the duration of the high frequency operation of the compressor is shorter, due to compression.
  • the indoor heat exchanger is not easy to reach the high temperature or low temperature protection value, and the compressor is frequently started.
  • the operation may be performed according to the target frequency, that is, according to the frequency corresponding to the user set temperature, and according to the preset compression. The machine protection strategy is judged.
  • the step of reducing the duration of operation of the compressor according to the starting frequency includes:
  • the first decreasing amplitude may be a frequency value or a proportional value.
  • the first reduction is larger due to the greater the number of shutdown protections, and the situation that the pressure reduction is too large may cause the compressor oil surface to fail to meet the standard and not return liquid. Then, when the frequency is reduced to the limit, the compressor is controlled to re-run according to the preset starting frequency, that is, after step S10, the following:
  • the startup frequency of the compressor is restored to a preset startup frequency and the duration of operation of the compressor according to the startup frequency is restored to a preset operation duration At the same time, the number of shutdown protections of the compressor is cleared.
  • the compressor control method further includes: when the refrigerant leakage is detected Reducing the pre-stored first decreasing amplitude and/or the second decreasing amplitude, and avoiding the starting frequency or the preset running time falling by reducing the first decreasing amplitude and/or the second decreasing amplitude More often leads to no liquid return or liquid level is not up to standard. Since the detection of the refrigerant leakage may be inaccurate, when the number of times the refrigerant leakage is detected is greater than the preset number of times, the pre-stored first decrease amplitude and/or the second decrease width may be reduced.
  • the number of shutdown protection times is greater than or equal to the second preset number of times
  • different schemes may be used to implement the preset startup frequency and the preset operation duration setting, for example, the current startup frequency and duration may be maintained, and After the current starting frequency and the preset number of running times, the starting frequency of the air conditioner is restored to the preset starting frequency, and the number of compressor shutdown restarts is cleared.
  • the startup frequency of the compressor may not be restored to the preset startup frequency and the duration is restored to the preset operation duration, that is, the current compressor is increased.
  • the starting frequency and duration are set, and the number of restarts of the compressor is cleared until the starting frequency of the compressor reaches the preset starting frequency and the duration reaches the preset running time, and step S10 is restarted.
  • the compressor control method protected by the present invention can be run in a control chip of an air conditioner, the air conditioner further comprising a memory, which can be carried in the control chip or other storage medium such as a flash memory of the air conditioner, after the air conditioner is started.
  • the compressor control program corresponding to the compressor control method is loaded into the memory of the control chip for operation.
  • the invention further provides a compressor control device.
  • FIG. 2 is a schematic diagram of functional modules of a first embodiment of a compressor control device according to the present invention.
  • the functional block diagram shown in FIG. 2 is merely an exemplary embodiment of a preferred embodiment, and those skilled in the art will surround the functional modules of the compressor control device shown in FIG. 2,
  • the new function modules can be easily supplemented;
  • the names of the function modules are custom names, which are only used for the respective program function blocks of the auxiliary compressor control device, and are not used to define the technical solution of the present invention.
  • the core of the technical solution of the present invention is , the function to be achieved by the function module of each name.
  • the embodiment provides a compressor control device, and the compressor control device includes:
  • the update module 10 is configured to update the number of shutdown protections of the compressor during the current operation of the air conditioner after the compressor shutdown protection;
  • the shutdown protection in this embodiment refers to the shutdown protection of the compressor when the temperature of the indoor heat exchanger exceeds the preset high temperature protection temperature in the heating mode, or the temperature of the indoor heat exchanger of the air conditioner in the cooling mode
  • the compressor is shut down when it is lower than the preset low temperature protection temperature.
  • the temperature of the indoor heat exchanger can be detected in real time or at a time.
  • the compressor is controlled to reduce the frequency at the compressor.
  • the compressor is controlled to stop the operation, that is, the compressor is restarted; similarly, in the air conditioner refrigeration operation, if the indoor heat exchanger If the temperature is lower than the preset low temperature protection temperature, the compressor is controlled to reduce the frequency.
  • the compressor frequency is reduced to the preset frequency and the temperature of the indoor heat exchanger is still less than the preset low temperature protection temperature, the compressor is controlled to stop and restart. .
  • the compressor restart does not include the case where the air conditioner is powered off and restarted.
  • the air conditioner counts the operation process from start-up to shutdown every time.
  • the number of shutdown protections is cleared every time the air conditioner is turned off, or the number of stored shutdown protections is cleared after the air conditioner is normally turned on. After the air conditioner is turned on, each shutdown protection adds one to the number of shutdown protections.
  • the frequency adjustment module 20 is configured to reduce a starting frequency of the compressor when the number of times of shutdown protection of the compressor is greater than a first preset number, so that when the compressor restarts, start according to the reduced starting frequency run.
  • the first preset number of times may be set by the developer according to needs, for example, the first preset number of times may be 2, that is, the third frequency of the shutdown is to reduce the starting frequency of the compressor.
  • the number of times of shutdown protection is greater than the first preset number, the same frequency can be reduced on the basis of the preset starting frequency.
  • the first preset number can be 2, that is, when the third shutdown protection is performed, the starting frequency is The preset starting frequency is reduced from 60HZ to 57HZ.
  • the fourth shutdown protection the starting frequency is reduced from 60HZ to 57HZ by the preset starting frequency, and so on, until the air conditioner is turned off; or, it can be protected at each stop.
  • the preset starting frequency is used, the different frequencies are reduced.
  • the first preset number can be 2, and the preset starting frequency is 60 Hz, that is, when the third shutdown protection is performed, the frequency is reduced by 20%.
  • the compressor adjusts the starting frequency after the shutdown protection, and then runs according to the adjusted starting frequency when the shutdown protection is restarted.
  • the running time of running according to the adjusted starting frequency can be set by the developer as needed.
  • the compressor control device further includes a third clearing module for clearing the number of shutdown protections when the air conditioner is powered off.
  • the power failure of the air conditioner may mean that the air conditioner is turned off or the air conditioner is powered off.
  • the compressor control device disclosed in this embodiment updates the number of shutdown protections of the compressor during the current operation of the air conditioner after the compressor is shut down, and the number of shutdown protections of the compressor is greater than the first preset.
  • the starting frequency of the compressor is lowered to start the operation according to the reduced starting frequency when the compressor is restarted, and the compressor is slowed to achieve high and low temperature protection by reducing the starting frequency of the compressor. Value, reducing the number of compressor restarts.
  • the frequency adjustment module 20 is further configured to reduce the preset according to the first falling amplitude corresponding to the current number of shutdown protection times.
  • the starting frequency is obtained to obtain the reduced starting frequency, wherein the greater the number of shutdown protections, the greater the first decreasing amplitude.
  • the first decreasing amplitude may be a frequency value or a proportional value.
  • the first reduction is larger due to the greater the number of shutdown protections, and the situation that the pressure reduction is too large may cause the compressor oil surface to fail to meet the standard and not return liquid.
  • the compressor control device further includes:
  • a first determining module configured to determine, when the number of times of shutdown protection of the compressor is greater than a first preset number of times, whether the number of the shutdown protection times is less than a second preset number, the second preset number of times being greater than the first The preset number of times;
  • the frequency adjustment module 20 is further configured to: when the number of shutdown protections is less than the second preset number of times, reduce a startup frequency of the compressor, so that when the compressor restarts, start according to the reduced startup frequency. Running, and returning the starting frequency of the compressor to a preset starting frequency when the number of shutdown protections is greater than or equal to the second predetermined number of times;
  • the first clearing module is configured to clear the number of shutdown protections of the compressor when the number of shutdown protections is less than the second predetermined number of times.
  • the frequency reduction is 25%
  • the frequency reduction is 30%
  • the starting frequency is 36HZ.
  • the starting frequency is too small, then the second preset number is set to 8, then in the first When 8 times of shutdown protection, the starting frequency of the compressor is restored to the preset starting frequency, and the number of shutdown protections of the compressor is cleared to restart the above process.
  • the compressor control device further includes a first amplitude adjustment module.
  • the first amplitude adjustment module includes: an acquisition unit, configured to acquire the number of times the refrigerant leakage is detected when the refrigerant leak is detected; and an amplitude adjustment unit, configured to detect the inaccurate condition of the refrigerant leakage.
  • the number of times the refrigerant leaks is greater than a preset number of times, the first decrease in the pre-stored amount is reduced.
  • the startup frequency of the compressor may not be restored to the preset startup frequency, that is, the current startup frequency of the compressor is increased, and the number of restarts of the compressor is cleared. Zero until the starting frequency of the compressor reaches the preset starting frequency, and step S10 is restarted.
  • different schemes can be used to implement the preset startup frequency setting, for example, the current startup frequency can be maintained, and After running the preset number of times according to the current starting frequency, the starting frequency of the air conditioner is restored to the preset starting frequency, and the number of compressor shutdown restarts is cleared.
  • the compressor control device further includes:
  • the duration adjustment module 30 is configured to reduce the duration of operation of the compressor according to the startup frequency when the number of shutdown protections of the compressor is greater than the first preset number, so that the compressor restarts according to the reduced startup frequency Start and run the reduced duration.
  • the duration of the high frequency operation of the compressor is shorter, due to compression.
  • the indoor heat exchanger is not easy to reach the high temperature or low temperature protection value, and the compressor is frequently started.
  • the operation may be performed according to the target frequency, that is, according to the frequency corresponding to the user set temperature, and according to the preset compression. The machine protection strategy is judged.
  • the compressor control device further includes: a second amplitude adjustment module, For reducing the pre-stored first falling amplitude and/or the second decreasing amplitude when detecting refrigerant leakage, avoiding starting by reducing the first decreasing amplitude and/or the second decreasing amplitude If the frequency or the preset running time drops too much, it will not return to the liquid or the liquid level will not reach the standard. Since the detection of the refrigerant leakage may be inaccurate, when the number of times the refrigerant leakage is detected is greater than the preset number of times, the pre-stored first decrease amplitude and/or the second decrease width may be reduced.
  • the duration adjustment module 30 is further configured to perform the current shutdown when the number of shutdown protections of the compressor is greater than the first preset number of times.
  • the second decreasing amplitude corresponding to the number of protections is decreased by a preset running time to obtain a length of time for the reduced compressor to operate according to the starting frequency, wherein the second stopping amplitude is larger, and the second decreasing amplitude is larger.
  • the first decreasing amplitude may be a frequency value or a proportional value.
  • the first reduction is larger due to the greater the number of shutdown protections, and the situation that the pressure reduction is too large may cause the compressor oil surface to fail to meet the standard and not return liquid.
  • the compressor control device further includes:
  • a second determining module configured to determine, when the number of times of shutdown protection of the compressor is greater than a first preset number of times, whether the number of the shutdown protection times is less than a second preset number, the second preset number of times being greater than the first The preset number of times;
  • the frequency adjustment module 20 is further configured to: when the number of shutdown protections is less than the second preset number of times, reduce a startup frequency of the compressor, and when the number of shutdown protections is greater than or equal to the second preset number of times Recovering the starting frequency of the compressor to a preset starting frequency
  • the duration adjustment module 30 is further configured to: when the number of shutdown protections is less than the second preset number of times, reduce a duration of operation of the compressor according to a startup frequency, so that the compressor restarts according to the reduced startup frequency The duration after the operation is reduced, and when the number of shutdown protections is greater than or equal to the second predetermined number of times, the duration of operation of the compressor according to the startup frequency is restored to a preset operation duration;
  • the second clearing module is configured to clear the number of shutdown protections of the compressor when the number of shutdown protections is greater than or equal to the second predetermined number of times.
  • the number of shutdown protection times is greater than or equal to the second preset number of times
  • different schemes may be used to implement the preset startup frequency and the preset operation duration setting, for example, the current startup frequency and duration may be maintained, and After the current starting frequency and the preset number of running times, the starting frequency of the air conditioner is restored to the preset starting frequency, and the number of compressor shutdown restarts is cleared.
  • the startup frequency of the compressor may not be restored to the preset startup frequency and the duration is restored to the preset operation duration, that is, the current compressor is increased.
  • the foregoing embodiment method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is better.
  • Implementation Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a mobile phone, a computer, a cloud server, an air conditioner, or a network device, etc.) to perform the methods of various embodiments of the present invention.

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Abstract

一种压缩机控制方法以及控制装置。该控制方法包括：在压缩机停机保护后，更新压缩机在空调器本次运行过程中的停机保护次数；在压缩机的停机保护次数大于第一预设次数时，降低压缩机的启动频率，以使压缩机重启时按照降低后的启动频率启动运行。通过降低压缩机的启动频率，以使压缩机较慢达到高、低温保护值，减少压缩机重启的次数。

Description

压缩机控制方法和装置
技术领域
本发明涉及空调器技术领域，尤其涉及一种压缩机控制方法和装置。
背景技术
空调器在较高的室外温度运行制热模式以及较低的室外温度下运行制冷模式时往往会出现在制热模式下室内换热器（即室内机）温度过高以及制冷模式下室内换热器（即室内机）温度过低的情况，为避免该种情况出现往往通压缩机停机来进行保护。
压缩机在启动时，需要在预设的启动频率如60或者90Hz左右运行1分钟以上，但按照这样的启动频率在室外高温制热运行和室外低温制冷运行时，蒸发器温度很快达到高、低温保护值，系统大约5~7分钟保护一次，导致压缩机频繁启动。
发明内容
本发明提供一种压缩机控制方法和装置，其主要目的在于解决较高的室外温度运行制热模式以及较低的室外温度下运行制冷模式时压缩机频繁启动的技术问题。
为实现上述目的，本发明提供一种压缩机控制方法，所述压缩机控制方法包括步骤：
在压缩机停机保护后，更新所述压缩机在空调器本次运行过程中的停机保护次数；
在所述压缩机的停机保护次数大于第一预设次数时，降低所述压缩机的启动频率，以使所述压缩机重启时按照降低后的所述启动频率启动运行。
可选地，所述降低所述压缩机的启动频率的步骤包括：
按照当前停机保护次数对应的第一下降幅度降低预设启动频率，以得到降低后的所述启动频率，其中，所述停机保护次数越大，所述第一下降幅度越大。
可选地，所述更新所述压缩机在空调器本次运行过程中的停机保护次数的步骤之后，所述压缩机控制方法还包括：
在所述压缩机的停机保护次数大于第一预设次数时，判断所述停机保护次数是否小于第二预设次数，所述第二预设次数大于所述第一预设次数；
在所述停机保护次数小于所述第二预设次数时，执行所述降低所述压缩机的启动频率，以使压缩机重启时按照降低后的所述启动频率启动运行的步骤；
在所述停机保护次数大于或等于所述第二预设次数时，将所述压缩机的启动频率恢复至预设启动频率，并将所述压缩机的停机保护次数清零。
可选地，所述压缩机控制方法还包括步骤：
在检测到冷媒泄露时，减小预存的所述第一下降幅度。
可选地，在检测到冷媒泄露时，减小预存的所述第一下降幅度的步骤包括：
在检测到冷媒泄露时，获取检测到冷媒泄露的次数；
在检测到冷媒泄露的次数大于预设次数时，减小预存的所述第一下降幅度。
可选地，执行所述降低所述压缩机的启动频率的步骤的同时，执行步骤：
降低所述压缩机按照启动频率运行的时长，以使压缩机重启时按照降低后的所述启动频率启动并运行降低的所述时长。
可选地，所述降低所述压缩机按照启动频率运行的时长的步骤包括：
按照当前停机保护次数对应的第二下降幅度降低预设运行时长，以得到降低后的所述压缩机按照启动频率运行的时长，其中，所述停机保护次数越大，所述第二下降幅度越大。
可选地，所述更新所述压缩机在空调器本次运行过程中的停机保护次数的步骤之后，所述压缩机控制方法还包括：
在所述压缩机的停机保护次数大于第一预设次数时，判断所述停机保护次数是否小于第二预设次数，所述第二预设次数大于所述第一预设次数；
在所述停机保护次数小于所述第二预设次数时，降低所述压缩机的启动频率并降低所述压缩机按照启动频率运行的时长，以使压缩机重启时按照降低后的所述启动频率启动运行降低后的所述时长；
在所述停机保护次数大于或等于所述第二预设次数时，将所述压缩机的启动频率恢复至预设启动频率并将所述压缩机按照启动频率运行的时长恢复至预设运行时长，同时将所述压缩机的停机保护次数清零。
可选地，所述压缩机控制方法还包括：
在检测到冷媒泄露时，减小预存的所述第一下降幅度及/或所述第二下降幅度。
可选地，所述压缩机控制方法还包括步骤：
在所述空调器断电时，对所述停机保护次数清零。
此外，为实现上述目的，本发明还提出一种压缩机控制装置，所述压缩机控制装置包括：
更新模块，用于在压缩机停机保护后，更新所述压缩机在空调器本次运行过程中的停机保护次数；
频率调整模块，用于在所述压缩机的停机保护次数大于第一预设次数时，降低所述压缩机的启动频率，以使所述压缩机重启时按照降低后的所述启动频率启动运行。
可选地，所述频率调整模块，还用于按照当前停机保护次数对应的第一下降幅度降低预设启动频率，以得到降低后的所述启动频率，其中，所述停机保护次数越大，所述第一下降幅度越大。
可选地，所述压缩机控制装置还包括：
第一判断模块，用于在所述压缩机的停机保护次数大于第一预设次数时，判断所述停机保护次数是否小于第二预设次数，所述第二预设次数大于所述第一预设次数；
所述频率调整模块，还用于在所述停机保护次数小于所述第二预设次数时，降低所述压缩机的启动频率，以使压缩机重启时按照降低后的所述启动频率启动运行，以及在所述停机保护次数大于或等于所述第二预设次数时，将所述压缩机的启动频率恢复至预设启动频率；
第一清零模块，用于在所述停机保护次数小于所述第二预设次数时，将所述压缩机的停机保护次数清零。
可选地，所述压缩机控制装置还包括：
第一幅度调整模块，用于在检测到冷媒泄露时，减小预存的所述第一下降幅度。
可选地，所述第一幅度调整模块包括：
获取单元，用于在检测到冷媒泄露时，获取检测到冷媒泄露的次数；
幅度调整单元，用于在检测到冷媒泄露的次数大于预设次数时，减小预存的所述第一下降幅度。
可选地，所述压缩机控制装置还包括：
时长调整模块，用于在所述压缩机的停机保护次数大于第一预设次数时，降低所述压缩机按照启动频率运行的时长，以使压缩机重启时按照降低后的所述启动频率启动并运行降低的所述时长。
可选地，所述时长调整模块，还用于在所述压缩机的停机保护次数大于第一预设次数时，按照当前停机保护次数对应的第二下降幅度降低预设运行时长，以得到降低后的所述压缩机按照启动频率运行的时长，其中，所述停机保护次数越大，所述第二下降幅度越大。
可选地，所述压缩机控制装置还包括：
第二判断模块，用于在所述压缩机的停机保护次数大于第一预设次数时，判断所述停机保护次数是否小于第二预设次数，所述第二预设次数大于所述第一预设次数；
频率调整模块，还用于在所述停机保护次数小于所述第二预设次数时，降低所述压缩机的启动频率，并在所述停机保护次数大于或等于所述第二预设次数时，将所述压缩机的启动频率恢复至预设启动频率
时长调整模块，还用于在所述停机保护次数小于所述第二预设次数时，降低所述压缩机按照启动频率运行的时长，以使压缩机重启时按照降低后的所述启动频率启动运行降低后的所述时长，并在所述停机保护次数大于或等于所述第二预设次数时，将所述压缩机按照启动频率运行的时长恢复至预设运行时长；
第二清零模块，用于在所述停机保护次数大于或等于所述第二预设次数时，将所述压缩机的停机保护次数清零。
可选地，所述压缩机控制装置还包括：
第二幅度调整模块，用于在检测到冷媒泄露时，减小预存的所述第一下降幅度及/或所述第二下降幅度。
本发明提出的压缩机控制方法和装置，在压缩机停机保护后，更新所述压缩机在空调器本次运行过程中的停机保护次数，并在所述压缩机的停机保护次数大于第一预设次数时，降低所述压缩机的启动频率，以使所述压缩机重启时按照降低后的所述启动频率启动运行，通过降低压缩机的启动频率，以使压缩机较慢达到高、低温保护值，减少压缩机重启的次数。
附图说明
图1为本发明压缩机控制方法第一实施例的流程示意图；
图2为本发明压缩机控制装置第一实施例的功能模块示意图；
图3为本发明压缩机控制装置第三实施例的功能模块示意图。
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
本发明提供一种压缩机控制方法。
参照图1，图1为本发明压缩机控制方法第一实施例的流程示意图。
本实施例提出一种压缩机控制方法，该压缩机控制方法包括：
步骤S10，在压缩机停机保护后，更新所述压缩机在空调器本次运行过程中的停机保护次数；
本实施例所述的停机保护是指，空调器在制热模式下室内换热器的温度超过预设高温保护温度时压缩机进行停机保护，或者空调器在制冷模式下室内换热器的温度低于预设低温保护温度时压缩机进行停机保护。在空调器运行过程中可实时或定时检测室内换热器的温度，在空调器制热运行时，若室内换热器的温度超过预设高温保护温度，则控制压缩机降频，在压缩机的频率降低至预设频率时室内换热器的温度仍大于预设高温保护温度，则控制压缩机进行停机保护，即压缩机重启；同理，在空调器制冷运行时，若室内换热器的温度低于预设低温保护温度，则控制压缩机降频，在压缩机频率降低至预设频率且室内换热器的温度仍小于预设低温保护温度，则控制压缩机进行停机保护即重启。该压缩机重启不包括空调器断电重启的情况。
空调器每次开机启动至关机之间算一次运行过程，在空调器每次关机时将停机保护次数清零，或者在空调器正常开机后将存储的停机保护次数清零。在空调器开机后，每一次停机保护对停机保护次数加一。
步骤S20，在所述压缩机的停机保护次数大于第一预设次数时，降低所述压缩机的启动频率，以使所述压缩机重启时按照降低后的所述启动频率启动运行。
该第一预设次数可由开发人员根据需要进行设定，例如第一预设次数可为2即在第三次停机保护时，降低所述压缩机的启动频率。在每次停机保护次数大于第一预设次数时，可均在预设启动频率的基础上降低相同的频率，例如第一预设次数可为2即在第三次停机保护时，将启动频率由预设启动频率由60HZ降低为57HZ，在第四次停机保护时仍将启动频率由预设启动频率由60HZ降低为57HZ，依次类推，直至空调器关机；或者，也可在每次停机保护时，在预设启动频率的基础上降低不同的频率，例如第一预设次数可为2，预设启动频率为60HZ，即在第三次停机保护时，频率降低幅度为20%，则第三次停机保护的启动频率为60*80%=48HZ，第四次停机保护时，频率降低幅度为25%，则第四次停机保护的启动频率为60*75%=45HZ，依次类推。
压缩机在停机保护之后调整启动频率，则在此次停机保护重新启动时按照调整后的启动频率运行，按照该调整后的启动频率运行的运行时长可由开发人员根据需要进行设定。
可以理解的是，由于压缩机的停机保护次数不断累积，若在空调器断电时不对压缩机的停机保护次数清零，则在空调器每次启动时停机保护次数均会大于第一预设次数，即在所述空调器断电时，对所述停机保护次数清零。空调器断电可指空调器关机时，或者空调器掉电。
本实施例公开的压缩机控制方法，在压缩机停机保护后，更新所述压缩机在空调器本次运行过程中的停机保护次数，并在所述压缩机的停机保护次数大于第一预设次数时，降低所述压缩机的启动频率，以使所述压缩机重启时按照降低后的所述启动频率启动运行，通过降低压缩机的启动频率，以使压缩机较慢达到高、低温保护值，减少压缩机重启的次数。
进一步地，基于第一实施例提出本发明压缩机控制方法第二实施例，在本实施例中，所述步骤S20包括：
在所述压缩机的停机保护次数大于第一预设次数时，降低所述压缩机的启动频率的步骤包括：
按照当前停机保护次数对应的第一下降幅度降低预设启动频率，以得到降低后的所述启动频率，以使所述压缩机重启时按照降低后的所述启动频率启动运行；
其中，所述停机保护次数越大，所述第一下降幅度越大。
该第一下降幅度可为频率值也可为比例值，由于停机保护次数越大第一下降幅度也越大，可能会出现下降幅度过大导致压缩机油面不达标以及不回液的情况，则需要在频率降低至极限时，控制压缩机按照预设的启动频率重新运行，即步骤S10之后包括：
在所述压缩机的停机保护次数大于第一预设次数时，判断所述停机保护次数是否小于第二预设次数，所述第二预设次数大于所述第一预设次数；
在所述停机保护次数小于所述第二预设次数时，执行步骤S20；
在所述停机保护次数大于或等于所述第二预设次数时，将所述压缩机的启动频率恢复至预设启动频率，并将所述压缩机的停机保护次数清零。
例如，第一预设次数可为2，预设启动频率为60HZ，即在第三次停机保护时，频率降低幅度为20%，则第三次停机保护的启动频率为60*80%=48HZ，第四次停机保护时，频率降低幅度为25%，则第四次停机保护的启动频率为60*75%=45HZ，第五次停机保护时，频率降低幅度为30%，则第五次停机保护的启动频率为60*70%=42HZ，依次类推，在第七次停机保护时，启动频率为36HZ，此时启动频率已经过小，则设置第二预设次数为8，则在第8次停机保护时，将压缩机的启动频率恢复至预设启动频率，并将所述压缩机的停机保护次数清零，重新开始上述过程，即执行步骤S10。
可以理解的是，由于空调器可能会出现冷媒泄露的情况，则可能导致在降低启动频率之后油面不达标或者未回液的情况，则该压缩机控制方法还包括：在检测到冷媒泄露时，减小预存的所述第一下降幅度，通过减小所述第一下降幅度的方式来避免启动频率下降过多导致不回液或者液面不达标的情况。由于冷媒泄露的检测可能出现不准确的情况，则在检测到冷媒泄露时，获取检测到冷媒泄露的次数；在检测到冷媒泄露的次数大于预设次数时，减小预存的所述第一下降幅度。
在所述停机保护次数大于或等于所述第二预设次数时，也可不将压缩机的启动频率恢复至预设启动频率，即增加压缩机当前的启动频率，并对压缩机的重启次数清零直至压缩机的启动频率达到预设启动频率，并重新开始执行步骤S10。本领域技术人员可以理解的是，在停机保护次数大于或等于所述第二预设次数时，可采用不同方案实现预设启动频率的设定，例如也可保持当前的启动频率不变，并在按照当前启动频率运行预设次数之后，将空调器的启动频率恢复至预设启动频率，并对压缩机停机重启次数清零。
进一步地，基于第一或第二实施例提出本发明压缩机控制方法第三实施例，在本实施例中，在执行降低所述压缩机的启动频率的步骤的同时，执行步骤：
降低所述压缩机按照启动频率运行的时长，以使压缩机重启时按照降低后的所述启动频率启动并运行降低的所述时长。
本实施例公开的方案，在所述压缩机的停机保护次数大于第一预设次数时，同时降低启动频率以及按照该启动频率运行的时长，则压缩机高频运行的时长更短，由于压缩机高频运行预设时长后则按照目标频率运转，则使得室内换热器不易达到高温或者低温保护值，避免压缩机频繁启动。在本实施例中，压缩机重启时按照降低后的所述启动频率启动并运行降低的所述时长后，可按照目标频率运行即按照用户设定温度对应的频率运行，并按照预设的压缩机保护策略进行判定。
进一步地，基于第三实施例提出本发明压缩机控制方法第四实施例，在本实施例中，
所述降低所述压缩机按照启动频率运行的时长的步骤包括：
按照当前停机保护次数对应的第二下降幅度降低预设运行时长，以得到降低后的所述压缩机按照启动频率运行的时长，其中，所述停机保护次数越大，所述第二下降幅度越大。
该第一下降幅度可为频率值也可为比例值，由于停机保护次数越大第一下降幅度也越大，可能会出现下降幅度过大导致压缩机油面不达标以及不回液的情况，则需要在频率降低至极限时，控制压缩机按照预设的启动频率重新运行，即步骤S10之后包括：
在所述压缩机的停机保护次数大于第一预设次数时，判断所述停机保护次数是否小于第二预设次数，所述第二预设次数大于所述第一预设次数；
在所述停机保护次数小于所述第二预设次数时，降低所述压缩机的启动频率并降低所述压缩机按照启动频率运行的时长，以使压缩机重启时按照降低后的所述启动频率启动运行降低后的所述时长；
在所述停机保护次数大于或等于所述第二预设次数时，将所述压缩机的启动频率恢复至预设启动频率并将所述压缩机按照启动频率运行的时长恢复至预设运行时长，同时将所述压缩机的停机保护次数清零。
可以理解的是，由于空调器可能会出现冷媒泄露的情况，则可能导致在降低启动频率之后油面不达标或者未回液的情况，则该压缩机控制方法还包括：在检测到冷媒泄露时，减小预存的所述第一下降幅度及/或所述第二下降幅度，通过减小所述第一下降幅度及/或第二下降幅度的方式来避免启动频率或者预设运行时长下降过多导致不回液或者液面不达标的情况。由于冷媒泄露的检测可能出现不准确的情况，则在检测到冷媒泄露的次数大于预设次数时，可减小预存的所述第一下降幅度及/或所述第二下降幅度。
在停机保护次数大于或等于所述第二预设次数时，可采用不同方案实现预设启动频率以及预设运行时长的设定，例如也可保持当前的启动频率和时长不变，并在按照当前启动频率以及时长运行预设次数之后，将空调器的启动频率恢复至预设启动频率，并对压缩机停机重启次数清零。或者，在所述停机保护次数大于或等于所述第二预设次数时，也可不将压缩机的启动频率恢复至预设启动频率以及将时长恢复至预设运行时长，即增加压缩机当前的启动频率以及时长，并对压缩机的重启次数清零直至压缩机的启动频率达到预设启动频率以及时长到达预设运行时长，重新开始执行步骤S10。
本发明保护的压缩机控制方法可运行于空调器的控制芯片中，该空调器还包括存储器，该存储器可承载于控制芯片中也可为空调器的其它存储介质如闪存，在空调器启动后该压缩机控制方法对应的压缩机控制程序加载至控制芯片的内存中运行。
本发明进一步提供一种压缩机控制装置。
参照图2，图2为本发明压缩机控制装置第一实施例的功能模块示意图。
需要强调的是，对本领域的技术人员来说，图2所示功能模块图仅仅是一个较佳实施例的示例图，本领域的技术人员围绕图2所示的压缩机控制装置的功能模块，可轻易进行新的功能模块的补充；各功能模块的名称是自定义名称，仅用于辅助压缩机控制装置的各个程序功能块，不用于限定本发明的技术方案，本发明技术方案的核心是，各自定义名称的功能模块所要达成的功能。
本实施例提出一种压缩机控制装置，该压缩机控制装置包括：
更新模块10，用于在压缩机停机保护后，更新所述压缩机在空调器本次运行过程中的停机保护次数；
本实施例所述的停机保护是指，空调器在制热模式下室内换热器的温度超过预设高温保护温度时压缩机进行停机保护，或者空调器在制冷模式下室内换热器的温度低于预设低温保护温度时压缩机进行停机保护。在空调器运行过程中可实时或定时检测室内换热器的温度，在空调器制热运行时，若室内换热器的温度超过预设高温保护温度，则控制压缩机降频，在压缩机的频率降低至预设频率时室内换热器的温度仍大于预设高温保护温度，则控制压缩机进行停机保护，即压缩机重启；同理，在空调器制冷运行时，若室内换热器的温度低于预设低温保护温度，则控制压缩机降频，在压缩机频率降低至预设频率且室内换热器的温度仍小于预设低温保护温度，则控制压缩机进行停机保护即重启。该压缩机重启不包括空调器断电重启的情况。
空调器每次开机启动至关机之间算一次运行过程，在空调器每次关机时将停机保护次数清零，或者在空调器正常开机后将存储的停机保护次数清零。在空调器开机后，每一次停机保护对停机保护次数加一。
频率调整模块20，用于在所述压缩机的停机保护次数大于第一预设次数时，降低所述压缩机的启动频率，以使所述压缩机重启时按照降低后的所述启动频率启动运行。
该第一预设次数可由开发人员根据需要进行设定，例如第一预设次数可为2即在第三次停机保护时，降低所述压缩机的启动频率。在每次停机保护次数大于第一预设次数时，可均在预设启动频率的基础上降低相同的频率，例如第一预设次数可为2即在第三次停机保护时，将启动频率由预设启动频率由60HZ降低为57HZ，在第四次停机保护时仍将启动频率由预设启动频率由60HZ降低为57HZ，依次类推，直至空调器关机；或者，也可在每次停机保护时，在预设启动频率的基础上降低不同的频率，例如第一预设次数可为2，预设启动频率为60HZ，即在第三次停机保护时，频率降低幅度为20%，则第三次停机保护的启动频率为60*80%=48HZ，第四次停机保护时，频率降低幅度为25%，则第四次停机保护的启动频率为60*75%=45HZ，依次类推。
压缩机在停机保护之后调整启动频率，则在此次停机保护重新启动时按照调整后的启动频率运行，按照该调整后的启动频率运行的运行时长可由开发人员根据需要进行设定。
可以理解的是，由于压缩机的停机保护次数不断累积，若在空调器断电时不对压缩机的停机保护次数清零，则在空调器每次启动时停机保护次数均会大于第一预设次数，即压缩机控制装置还包括第三清零模块，用于在所述空调器断电时，对所述停机保护次数清零。空调器断电可指空调器关机时，或者空调器掉电。
本实施例公开的压缩机控制装置，在压缩机停机保护后，更新所述压缩机在空调器本次运行过程中的停机保护次数，并在所述压缩机的停机保护次数大于第一预设次数时，降低所述压缩机的启动频率，以使所述压缩机重启时按照降低后的所述启动频率启动运行，通过降低压缩机的启动频率，以使压缩机较慢达到高、低温保护值，减少压缩机重启的次数。
进一步地，基于第一实施例提出本发明压缩机控制装置第二实施例，在本实施例中，所述频率调整模块20，还用于按照当前停机保护次数对应的第一下降幅度降低预设启动频率，以得到降低后的所述启动频率，其中，所述停机保护次数越大，所述第一下降幅度越大。
该第一下降幅度可为频率值也可为比例值，由于停机保护次数越大第一下降幅度也越大，可能会出现下降幅度过大导致压缩机油面不达标以及不回液的情况，则需要在频率降低至极限时，控制压缩机按照预设的启动频率重新运行，即所述压缩机控制装置还包括：
第一判断模块，用于在所述压缩机的停机保护次数大于第一预设次数时，判断所述停机保护次数是否小于第二预设次数，所述第二预设次数大于所述第一预设次数；
所述频率调整模块20，还用于在所述停机保护次数小于所述第二预设次数时，降低所述压缩机的启动频率，以使压缩机重启时按照降低后的所述启动频率启动运行，以及在所述停机保护次数大于或等于所述第二预设次数时，将所述压缩机的启动频率恢复至预设启动频率；
第一清零模块，用于在所述停机保护次数小于所述第二预设次数时，将所述压缩机的停机保护次数清零。
例如，第一预设次数可为2，预设启动频率为60HZ，即在第三次停机保护时，频率降低幅度为20%，则第三次停机保护的启动频率为60*80%=48HZ，第四次停机保护时，频率降低幅度为25%，则第四次停机保护的启动频率为60*75%=45HZ，第五次停机保护时，频率降低幅度为30%，则第五次停机保护的启动频率为60*70%=42HZ，依次类推，在第七次停机保护时，启动频率为36HZ，此时启动频率已经过小，则设置第二预设次数为8，则在第8次停机保护时，将压缩机的启动频率恢复至预设启动频率，并将所述压缩机的停机保护次数清零，重新开始上述过程。
可以理解的是，由于空调器可能会出现冷媒泄露的情况，则可能导致在降低启动频率之后油面不达标或者未回液的情况，则该压缩机控制装置还包括第一幅度调整模块，用于在检测到冷媒泄露时，减小预存的所述第一下降幅度，通过减小所述第一下降幅度的方式来避免启动频率下降过多导致不回液或者液面不达标的情况。由于冷媒泄露的检测可能出现不准确的情况，则所述第一幅度调整模块包括：获取单元，用于在检测到冷媒泄露时，获取检测到冷媒泄露的次数；幅度调整单元，用于在检测到冷媒泄露的次数大于预设次数时，减小预存的所述第一下降幅度。
在所述停机保护次数大于或等于所述第二预设次数时，也可不将压缩机的启动频率恢复至预设启动频率，即增加压缩机当前的启动频率，并对压缩机的重启次数清零直至压缩机的启动频率达到预设启动频率，并重新开始执行步骤S10。本领域技术人员可以理解的是，在停机保护次数大于或等于所述第二预设次数时，可采用不同方案实现预设启动频率的设定，例如也可保持当前的启动频率不变，并在按照当前启动频率运行预设次数之后，将空调器的启动频率恢复至预设启动频率，并对压缩机停机重启次数清零。
进一步地，参照图3，基于第一或第二实施例提出本发明压缩机控制装置第三实施例，在本实施例中，所述压缩机控制装置还包括：
时长调整模块30，用于在所述压缩机的停机保护次数大于第一预设次数时，降低所述压缩机按照启动频率运行的时长，以使压缩机重启时按照降低后的所述启动频率启动并运行降低的所述时长。
本实施例公开的方案，在所述压缩机的停机保护次数大于第一预设次数时，同时降低启动频率以及按照该启动频率运行的时长，则压缩机高频运行的时长更短，由于压缩机高频运行预设时长后则按照目标频率运转，则使得室内换热器不易达到高温或者低温保护值，避免压缩机频繁启动。在本实施例中，压缩机重启时按照降低后的所述启动频率启动并运行降低的所述时长后，可按照目标频率运行即按照用户设定温度对应的频率运行，并按照预设的压缩机保护策略进行判定。
可以理解的是，由于空调器可能会出现冷媒泄露的情况，则可能导致在降低启动频率之后油面不达标或者未回液的情况，则该压缩机控制装置还包括：第二幅度调整模块，用于在检测到冷媒泄露时，减小预存的所述第一下降幅度及/或所述第二下降幅度，通过减小所述第一下降幅度及/或第二下降幅度的方式来避免启动频率或者预设运行时长下降过多导致不回液或者液面不达标的情况。由于冷媒泄露的检测可能出现不准确的情况，则在检测到冷媒泄露的次数大于预设次数时，可减小预存的所述第一下降幅度及/或所述第二下降幅度。
进一步地，基于第三实施例提出本发明压缩机控制装置第四实施例，所述时长调整模块30，还用于在所述压缩机的停机保护次数大于第一预设次数时，按照当前停机保护次数对应的第二下降幅度降低预设运行时长，以得到降低后的所述压缩机按照启动频率运行的时长，其中，所述停机保护次数越大，所述第二下降幅度越大。
该第一下降幅度可为频率值也可为比例值，由于停机保护次数越大第一下降幅度也越大，可能会出现下降幅度过大导致压缩机油面不达标以及不回液的情况，则需要在频率降低至极限时，控制压缩机按照预设的启动频率重新运行，即所述压缩机控制装置还包括：
第二判断模块，用于在所述压缩机的停机保护次数大于第一预设次数时，判断所述停机保护次数是否小于第二预设次数，所述第二预设次数大于所述第一预设次数；
频率调整模块20，还用于在所述停机保护次数小于所述第二预设次数时，降低所述压缩机的启动频率，并在所述停机保护次数大于或等于所述第二预设次数时，将所述压缩机的启动频率恢复至预设启动频率
时长调整模块30，还用于在所述停机保护次数小于所述第二预设次数时，降低所述压缩机按照启动频率运行的时长，以使压缩机重启时按照降低后的所述启动频率启动运行降低后的所述时长，并在所述停机保护次数大于或等于所述第二预设次数时，将所述压缩机按照启动频率运行的时长恢复至预设运行时长；
第二清零模块，用于在所述停机保护次数大于或等于所述第二预设次数时，将所述压缩机的停机保护次数清零。
在停机保护次数大于或等于所述第二预设次数时，可采用不同方案实现预设启动频率以及预设运行时长的设定，例如也可保持当前的启动频率和时长不变，并在按照当前启动频率以及时长运行预设次数之后，将空调器的启动频率恢复至预设启动频率，并对压缩机停机重启次数清零。或者，在所述停机保护次数大于或等于所述第二预设次数时，也可不将压缩机的启动频率恢复至预设启动频率以及将时长恢复至预设运行时长，即增加压缩机当前的启动频率以及时长，并对压缩机的重启次数清零直至压缩机的启动频率达到预设启动频率以及时长到达预设运行时长，重新开始检测压缩机是否停机保护，在压缩机停机保护后，更新所述压缩机在空调器本次运行过程中的停机保护次数。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
上述本发明实施例序号仅仅为了描述，不代表实施例的优劣。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质（如ROM/RAM、磁碟、光盘）中，包括若干指令用以使得一台终端设备（可以是手机，计算机，云端服务器，空调器，或者网络设备等）执行本发明各个实施例的方法。
以上仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (20)

  1. 一种压缩机控制方法，其特征在于，所述压缩机控制方法包括步骤：
    在压缩机停机保护后，更新所述压缩机在空调器本次运行过程中的停机保护次数；
    在所述压缩机的停机保护次数大于第一预设次数时，降低所述压缩机的启动频率，以使所述压缩机重启时按照降低后的所述启动频率启动运行。
  2. 如权利要求1所述的压缩机控制方法，其特征在于，所述降低所述压缩机的启动频率的步骤包括：
    按照当前停机保护次数对应的第一下降幅度降低预设启动频率，以得到降低后的所述启动频率，其中，所述停机保护次数越大，所述第一下降幅度越大。
  3. 如权利要求2所述的压缩机控制方法，其特征在于，所述更新所述压缩机在空调器本次运行过程中的停机保护次数的步骤之后，所述压缩机控制方法还包括：
    在所述压缩机的停机保护次数大于第一预设次数时，判断所述停机保护次数是否小于第二预设次数，所述第二预设次数大于所述第一预设次数；
    在所述停机保护次数小于所述第二预设次数时，执行所述降低所述压缩机的启动频率，以使压缩机重启时按照降低后的所述启动频率启动运行的步骤；
    在所述停机保护次数大于或等于所述第二预设次数时，将所述压缩机的启动频率恢复至预设启动频率，并将所述压缩机的停机保护次数清零。
  4. 如权利要求2所述的压缩机控制方法，其特征在于，所述压缩机控制方法还包括步骤：
    在检测到冷媒泄露时，减小预存的所述第一下降幅度。
  5. 如权利要求4所述的压缩机控制方法，其特征在于，在检测到冷媒泄露时，减小预存的所述第一下降幅度的步骤包括：
    在检测到冷媒泄露时，获取检测到冷媒泄露的次数；
    在检测到冷媒泄露的次数大于预设次数时，减小预存的所述第一下降幅度。
  6. 如权利要求1所述的压缩机控制方法，其特征在于，执行所述降低所述压缩机的启动频率的步骤的同时，执行步骤：
    降低所述压缩机按照启动频率运行的时长，以使压缩机重启时按照降低后的所述启动频率启动并运行降低的所述时长。
  7. 如权利要求6所述的压缩机控制方法，其特征在于，所述降低所述压缩机按照启动频率运行的时长的步骤包括：
    按照当前停机保护次数对应的第二下降幅度降低预设运行时长，以得到降低后的所述压缩机按照启动频率运行的时长，其中，所述停机保护次数越大，所述第二下降幅度越大。
  8. 如权利要求7所述的压缩机控制方法，其特征在于，所述更新所述压缩机在空调器本次运行过程中的停机保护次数的步骤之后，所述压缩机控制方法还包括：
    在所述压缩机的停机保护次数大于第一预设次数时，判断所述停机保护次数是否小于第二预设次数，所述第二预设次数大于所述第一预设次数；
    在所述停机保护次数小于所述第二预设次数时，降低所述压缩机的启动频率并降低所述压缩机按照启动频率运行的时长，以使压缩机重启时按照降低后的所述启动频率启动运行降低后的所述时长；
    在所述停机保护次数大于或等于所述第二预设次数时，将所述压缩机的启动频率恢复至预设启动频率并将所述压缩机按照启动频率运行的时长恢复至预设运行时长，同时将所述压缩机的停机保护次数清零。
  9. 如权利要求7所述的压缩机控制方法，其特征在于，所述压缩机控制方法还包括：
    在检测到冷媒泄露时，减小预存的所述第一下降幅度及/或所述第二下降幅度。
  10. 如权利要求1所述的压缩机控制方法，其特征在于，所述压缩机控制方法还包括步骤：
    在所述空调器断电时，对所述停机保护次数清零。
  11. 一种压缩机控制装置，其特征在于，所述压缩机控制装置包括：
    更新模块，用于在压缩机停机保护后，更新所述压缩机在空调器本次运行过程中的停机保护次数；
    频率调整模块，用于在所述压缩机的停机保护次数大于第一预设次数时，降低所述压缩机的启动频率，以使所述压缩机重启时按照降低后的所述启动频率启动运行。
  12. 如权利要求11所述的压缩机控制装置，其特征在于，所述频率调整模块，还用于按照当前停机保护次数对应的第一下降幅度降低预设启动频率，以得到降低后的所述启动频率，其中，所述停机保护次数越大，所述第一下降幅度越大。
  13. 如权利要求12所述的压缩机控制装置，其特征在于，所述压缩机控制装置还包括：
    第一判断模块，用于在所述压缩机的停机保护次数大于第一预设次数时，判断所述停机保护次数是否小于第二预设次数，所述第二预设次数大于所述第一预设次数；
    所述频率调整模块，还用于在所述停机保护次数小于所述第二预设次数时，降低所述压缩机的启动频率，以使压缩机重启时按照降低后的所述启动频率启动运行，以及在所述停机保护次数大于或等于所述第二预设次数时，将所述压缩机的启动频率恢复至预设启动频率；
    第一清零模块，用于在所述停机保护次数小于所述第二预设次数时，将所述压缩机的停机保护次数清零。
  14. 如权利要求12所述的压缩机控制装置，其特征在于，所述压缩机控制装置还包括：
    第一幅度调整模块，用于在检测到冷媒泄露时，减小预存的所述第一下降幅度。
  15. 如权利要求14所述的压缩机控制装置，其特征在于，所述第一幅度调整模块包括：
    获取单元，用于在检测到冷媒泄露时，获取检测到冷媒泄露的次数；
    幅度调整单元，用于在检测到冷媒泄露的次数大于预设次数时，减小预存的所述第一下降幅度。
  16. 如权利要求11所述的压缩机控制装置，其特征在于，所述压缩机控制装置还包括：
    第三清零模块，用于在所述空调器断电时，对所述停机保护次数清零。
  17. 如权利要求11所述的压缩机控制装置，其特征在于，所述压缩机控制装置还包括：
    时长调整模块，用于在所述压缩机的停机保护次数大于第一预设次数时，降低所述压缩机按照启动频率运行的时长，以使压缩机重启时按照降低后的所述启动频率启动并运行降低的所述时长。
  18. 如权利要求17所述的压缩机控制装置，其特征在于，所述时长调整模块，还用于在所述压缩机的停机保护次数大于第一预设次数时，按照当前停机保护次数对应的第二下降幅度降低预设运行时长，以得到降低后的所述压缩机按照启动频率运行的时长，其中，所述停机保护次数越大，所述第二下降幅度越大。
  19. 如权利要求18所述的压缩机控制装置，其特征在于，所述压缩机控制装置还包括：
    第二判断模块，用于在所述压缩机的停机保护次数大于第一预设次数时，判断所述停机保护次数是否小于第二预设次数，所述第二预设次数大于所述第一预设次数；
    频率调整模块，还用于在所述停机保护次数小于所述第二预设次数时，降低所述压缩机的启动频率，并在所述停机保护次数大于或等于所述第二预设次数时，将所述压缩机的启动频率恢复至预设启动频率
    时长调整模块，还用于在所述停机保护次数小于所述第二预设次数时，降低所述压缩机按照启动频率运行的时长，以使压缩机重启时按照降低后的所述启动频率启动运行降低后的所述时长，并在所述停机保护次数大于或等于所述第二预设次数时，将所述压缩机按照启动频率运行的时长恢复至预设运行时长；
    第二清零模块，用于在所述停机保护次数大于或等于所述第二预设次数时，将所述压缩机的停机保护次数清零。
  20. 如权利要求18所述的压缩机控制装置，其特征在于，所述压缩机控制装置还包括：
    第二幅度调整模块，用于在检测到冷媒泄露时，减小预存的所述第一下降幅度及/或所述第二下降幅度。
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