CN115307285A - Air conditioner control method and device, air conditioner and storage medium - Google Patents

Air conditioner control method and device, air conditioner and storage medium Download PDF

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Publication number
CN115307285A
CN115307285A CN202211008563.6A CN202211008563A CN115307285A CN 115307285 A CN115307285 A CN 115307285A CN 202211008563 A CN202211008563 A CN 202211008563A CN 115307285 A CN115307285 A CN 115307285A
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China
Prior art keywords
compressor
frequency
air conditioner
temperature
preset
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CN202211008563.6A
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Chinese (zh)
Inventor
李聪
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GD Midea Air Conditioning Equipment Co Ltd
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GD Midea Air Conditioning Equipment Co Ltd
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Priority to CN202211008563.6A priority Critical patent/CN115307285A/en
Publication of CN115307285A publication Critical patent/CN115307285A/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
    • F24F11/62—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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/02—Lubrication
    • F04B39/0207—Lubrication with lubrication control systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
    • 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
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/38—Failure diagnosis
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • F24F11/58—Remote control using Internet communication
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • 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
    • 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
    • F25B2600/01—Timing
    • 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
    • F25B2600/021—Inverters therefor
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2115—Temperatures of a compressor or the drive means therefor
    • F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
    • 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

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

Abstract

The invention discloses an air conditioner control method and device, an air conditioner and a storage medium, and belongs to the technical field of air conditioners. The method comprises the steps of controlling a compressor of the air conditioner to operate according to a preset frequency, and recording the operation duration of the compressor; when the operation time length reaches a first lower limit time length, acquiring the exhaust temperature of the compressor and the temperature of the heat exchanger; determining a temperature difference between the exhaust gas temperature and the temperature of the heat exchanger; and adjusting the operating frequency of the compressor according to the temperature difference, determining the exhaust superheat degree of the compressor between the exhaust temperature and the temperature of the heat exchanger, and after the minimum operating time is met, using the exhaust superheat degree of the compressor as a determination condition, and performing combined determination on the exhaust superheat degree and the temperature of the heat exchanger, so that the time from starting to stable operation of the air conditioner is optimized under different use conditions while effective oil lubrication protection of the compressor is ensured.

Description

Air conditioner control method and device, air conditioner and storage medium
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner control method and device, an air conditioner and a storage medium.
Background
At present, an air conditioning system starts a heating working condition after being placed for a long time under the condition of low temperature of outdoor environment, particularly extremely low temperature, and poor oil lubrication is a main reason for frequent fault of compressor sintering. This is because the lower the temperature is, the negative correlation is obtained between the compatibility of the lubricating oil and the refrigerant in the air conditioning system. In the process that the outdoor environment temperature continuously drops, the refrigerant in the lubricating oil in the condenser of the outdoor unit can be separated out, the lubricating oil is deposited in a pipeline of a heat exchanger of the outdoor unit, after the air conditioner starts the heating working condition, the working temperature of a refrigerant of the heat exchanger of the outdoor unit is lower than the environment temperature, the separation of the refrigerant from the lubricating oil is intensified, and only a small amount of lubricating oil can be brought back when the refrigerant circulates back to the compressor, so that the running oil of the compressor is not lubricated enough, and the sintering is caused.
The existing solutions are mostly designed by the following aspects: the opening degree of the expansion valve at the time of starting is preset, and the opening degree of the expansion valve is changed after forced operation for a preset time. After the starting, the preset frequency is forcibly operated, and the frequency can be changed after the preset time is met. The preset parameters under the existing scheme are all on the basis of a small number of samples, after the parameters are fixed through forced operation, the air conditioning system can reach a certain stable oil circulation stable state, and the preset parameters are determined by judging that the oil level of lubricating oil in the compressor body at the moment meets the design requirements. The problem that the existing solution has is that the time required for the compressor to reach the target oil lubrication condition is different when the actual use environments are different, and in order to ensure the reliability, the preset time for operating the preset protection frequency is often too long, so that the time for the air conditioner to reach the target frequency from starting is too long under the actual use conditions.
The above is only for the purpose of assisting understanding of the technical solution of the present invention, and does not represent an admission that the above is the prior art.
Disclosure of Invention
The invention mainly aims to provide an air conditioner control method, an air conditioner control device, an air conditioner and a storage medium, and aims to solve the technical problem that the time from starting to stable operation of the air conditioner in the prior art is long.
In order to achieve the above object, the present invention provides an air conditioner control method, including the steps of:
controlling a compressor of the air conditioner to operate according to a preset frequency, and recording the operation duration of the compressor;
when the operation time length reaches a first lower limit time length, acquiring the exhaust temperature of the compressor and the temperature of the heat exchanger;
determining a temperature difference between the exhaust gas temperature and the temperature of the heat exchanger; and
and adjusting the running frequency of the compressor according to the temperature difference value.
Optionally, the adjusting the operating frequency of the compressor according to the temperature difference value includes:
and when the temperature difference is larger than a preset difference threshold value, increasing the running frequency of the compressor according to a preset amplitude value.
Optionally, the adjusting the operating frequency of the compressor according to the temperature difference value includes:
when the temperature difference is smaller than or equal to a preset difference threshold value, controlling the compressor to continuously operate according to the preset frequency, and recording the operation duration; and
and when the operation time length reaches a first upper limit time length, increasing the operation frequency of the compressor according to a preset amplitude value.
Optionally, after increasing the operating frequency of the compressor according to the preset amplitude, the method further includes:
comparing the current operating frequency of the compressor after the frequency increase with a target operating frequency;
when the current operating frequency is smaller than the target operating frequency, controlling the compressor to operate according to the current operating frequency, and recording the operating duration;
when the operation time length reaches a second lower limit time length, acquiring the exhaust temperature of the compressor and the temperature of the heat exchanger;
determining the exhaust gas temperature and a temperature difference between the temperatures of the heat exchangers; and
and continuously adjusting the current operating frequency according to the temperature difference value.
Optionally, the continuously adjusting the current operating frequency according to the temperature difference value includes:
and when the temperature difference is greater than the preset difference threshold value, increasing the current operating frequency according to a preset amplitude value, and returning to execute the step of comparing the increased current operating frequency of the compressor with the target operating frequency.
Optionally, the continuously adjusting the current operating frequency according to the temperature difference value includes:
when the temperature difference is smaller than or equal to a preset difference threshold value, controlling the compressor to continuously operate according to the current operation frequency, and recording the operation duration; and
and when the operation time length reaches a second upper limit time length, increasing the current operation frequency according to a preset amplitude value, and returning to execute the step of comparing the increased current operation frequency of the compressor with the target operation frequency.
Optionally, after comparing the current operating frequency of the compressor after the frequency increase with the target operating frequency, the method further includes:
and when the current operating frequency is greater than the target operating frequency, controlling the compressor to stop increasing the frequency, and controlling the compressor to operate according to the target operating frequency.
In addition, to achieve the above object, the present invention also provides an air conditioner control device including:
the recording module is used for controlling a compressor of the air conditioner to operate according to a preset frequency and recording the operation duration of the compressor;
the acquisition module is used for acquiring the exhaust temperature of the compressor and the temperature of the heat exchanger when the operation time length reaches a first lower limit time length;
a calculation module for determining a temperature difference between the exhaust gas temperature and the temperature of the heat exchanger; and
and the adjusting module is used for adjusting the running frequency of the compressor according to the temperature difference value.
In addition, to achieve the above object, the present invention also provides an air conditioner including: a memory, a processor, and an air conditioner control program stored on the memory and run on the processor, the air conditioner control program configured to implement the air conditioner control method as described above.
Further, to achieve the above object, the present invention also proposes a storage medium having stored thereon an air conditioner control program which, when executed by a processor, implements the air conditioner control method as described above.
The method comprises the steps of controlling a compressor of the air conditioner to operate according to a preset frequency, and recording the operation duration of the compressor; when the operation time length reaches a first lower limit time length, acquiring the exhaust temperature of the compressor and the temperature of the heat exchanger; determining a temperature difference between the exhaust gas temperature and the temperature of the heat exchanger; and adjusting the operating frequency of the compressor according to the temperature difference, determining the exhaust superheat degree of the compressor between the exhaust temperature and the temperature of the heat exchanger, and after the minimum operating time is met, using the exhaust superheat degree of the compressor as a determination condition, and performing combined determination on the exhaust superheat degree and the temperature of the heat exchanger, so that the time from starting to stable operation of the air conditioner is optimized under different use conditions while effective oil lubrication protection of the compressor is ensured.
Drawings
Fig. 1 is a schematic structural diagram of an air conditioner of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a control method of an air conditioner according to a first embodiment of the present invention;
FIG. 3 is a schematic diagram of an air conditioner according to an embodiment of the air conditioner control method of the present invention;
FIG. 4 is a flow chart illustrating a second embodiment of a method for controlling an air conditioner according to the present invention;
FIG. 5 is a flow chart illustrating a third embodiment of a method for controlling an air conditioner in accordance with the present invention;
fig. 6 is a block diagram showing the construction of the first embodiment of the air conditioner control device according to the present invention.
Description of the reference numerals
1 Frequency conversion compressor 6 Refrigeration throttle valve
2 Four-way valve 7 Filter
3 Condenser 8 Evaporator with a heat exchanger
31 Upper fan 81 Inner fan
32 Lower fan 82 Indoor pipeline temperature sensor
33 Outdoor pipeline temperature sensor 9 Gas-liquid separator
34 External environment temperature sensor 10 Electromagnetic valve
4 Filter 11 Capillary tube
5 Heating throttle valve
The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an air conditioner in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the air conditioner may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to implement connection communication among these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a Wireless interface (e.g., a Wireless-Fidelity (Wi-Fi) interface). The Memory 1005 may be a Random Access Memory (RAM) Memory, or a Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001 described previously.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the air conditioner, and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, an operating system, a network communication module, a user interface module, and an air conditioner control program may be included in the memory 1005, which is one of the storage media.
In the air conditioner shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 of the air conditioner of the present invention may be provided in the air conditioner, and the air conditioner calls the air conditioner control program stored in the memory 1005 through the processor 1001 and executes the air conditioner control method provided by the embodiment of the present invention.
An embodiment of the present invention provides an air conditioner control method, and referring to fig. 2, fig. 2 is a flowchart illustrating a first embodiment of the air conditioner control method according to the present invention.
In this embodiment, the air conditioner control method includes the steps of:
step S10: and controlling a compressor of the air conditioner to operate according to a preset frequency, and recording the operation duration of the compressor.
In this embodiment, the execution main body of this embodiment may be the air conditioner control device, the air conditioner control device has functions of data processing, data communication, program operation, and the like, and the air conditioner control device may be a controller inside an air conditioner. Of course, other devices with similar functions may be used, and the present embodiment is not limited thereto. For convenience of explanation, the present embodiment will be described by taking an air conditioner control device as an example.
At present, an air conditioning system starts a heating working condition after being placed for a long time under the condition of low temperature of outdoor environment, particularly extremely low temperature, and poor oil lubrication is a main reason for frequent fault of compressor sintering. This is because the compatibility between the lubricating oil and the refrigerant in the air conditioning system is negatively correlated with the lower temperature. In the process that the outdoor environment temperature continuously drops, the refrigerant in the lubricating oil in the condenser of the outdoor unit can be separated out, the lubricating oil is deposited in a pipeline of a heat exchanger of the outdoor unit, after the air conditioner starts the heating working condition, the working temperature of a refrigerant of the heat exchanger of the outdoor unit is lower than the environment temperature, the separation of the refrigerant from the lubricating oil is intensified, and only a small amount of lubricating oil can be brought back when the refrigerant circulates back to the compressor, so that the running oil of the compressor is not lubricated enough, and the sintering is caused.
The existing solutions are mostly designed by the following aspects: the opening degree of the expansion valve at the time of starting is preset, and the opening degree of the expansion valve is changed after the forced operation is carried out for a preset time. After the starting, the preset frequency is forcibly operated, and the frequency can be changed after the preset time is met. The preset parameters under the existing scheme are all on the basis of a small amount of samples, after the parameters are fixed through forced operation, the air conditioning system can reach a certain stable oil circulation stable state, and the preset parameters are determined by judging that the oil level of lubricating oil in the compressor body at the moment meets the design requirements. The problem that the existing solution has is that the time required for the compressor to reach the target oil lubrication condition is different when the actual use environments are different, and in order to ensure the reliability, the preset time for operating the preset protection frequency is often too long, so that the time for the air conditioner to reach the target frequency from starting is too long under the actual use conditions.
In order to solve the above-mentioned problems, the present embodiment introduces the degree of superheat of the compressor discharge as a determination condition for frequency increase, and controls the frequency of the compressor by using the degree of superheat of the compressor discharge as the determination condition after the minimum operation time is satisfied.
In a specific implementation, as shown in fig. 3, the air conditioner shown in fig. 3 includes an indoor side and an outdoor side, the indoor side includes an evaporator 8, an inner fan 81 and an indoor pipeline temperature sensor 82, the outdoor side includes an inverter compressor 1, a four-way valve 2, a condenser 3, an upper fan 31, a lower fan 32, an outdoor pipeline temperature sensor 33, an external environment temperature sensor 34, a filter 4, a heating throttle valve 5, a cooling throttle valve 6, a filter 7, a vapor-liquid separator 9, an electromagnetic valve 10 and a capillary tube 11.
It should be noted that, in the present scheme, not only a long time is required to enable the air conditioner to achieve stable operation, but also the lubrication conditions of the compressor are significantly different for the start of the refrigeration and heating working conditions, and the present scheme is not distinguished, but the present embodiment may be distinguished for different working conditions.
Specifically, when the air conditioner is in a heating working condition, the compressor is used for heating at a preset frequency Hz 1 Running time t 1 Presetting and detecting the temperature T of the evaporator 2 And exhaust temperature T Row board When T is Row board -T 2 >When delta T is hot, the compressor reaches enough exhaust superheat degree, the oil lubrication effect of the compressor is good, the frequency of the first stage of oil surface protection is finished, and the frequency of the compressor is increased by a preset value plus delta Hz; when T is Row board -T 2 When the temperature is less than or equal to delta T, the expansion valve is excessively opened, the flow rate of the refrigerant is insufficient, the risk of lubricating oil remaining in the system exists, and the compressor continues to operate at the preset frequency Hz 1 Running time t 1max After presetting, the compressor frequency is increased by a preset value Delta Hz. When the target frequency is>Hz 1 When positive Delta Hz, when the compressor is in Hz 1 +. DELTA Hz running time t 2 Preset, when T Row board -T 2 >When the delta T is hot, the frequency of the second stage of oil surface protection is ended, and the frequency of the compressor continues to rise by delta Hz; when T is Row board -T 2 At ≦ Δ T heat, compressor in Hz 1 +. DELTA Hz running time t 2max After presetting, the compressor frequency continues to rise by a preset value Delta Hz. When the target frequency is<Hz 1 And when the frequency is plus delta Hz, the compressor operates according to the target frequency, the frequency does not rise any more, and the oil level protection control is finished. When the target frequency is>Hz 1 And when the frequency is plus delta Hz and minus delta Hz, continuously executing the step of increasing the frequency of the compressor until the target frequency is reached.
In the refrigerating condition, when the compressor is at the preset frequency Hz 1 Running time t 1 Presetting and detecting the temperature T of the condenser 3 And exhaust temperature T Row board When T is Row board -T 3 >When the temperature is delta T cold, the compressor reaches enough exhaust superheat degree, the oil lubrication effect of the compressor is good, the frequency of the first stage of oil surface protection is finished, and the frequency of the compressor is increased by a preset value plus delta Hz; when T is Row board -T 3 When the temperature is less than or equal to delta T, the expansion valve is opened too much, the flow rate of the refrigerant is insufficient, the risk of lubricating oil remaining in the system exists, and the compressor is operated at the preset frequency Hz 1 Running time t 1max After presetting, the compressor frequency is increased by a preset value delta Hz. When the target frequency is>Hz 1 When positive Delta Hz, when the compressor is in Hz 1 +. Delta Hz running time t 2 Preset, when T Row board -T 3 >And when the delta T is cold, the frequency of the second stage of oil surface protection is ended, and the frequency of the compressor continues to rise by delta Hz. When T is Row board -T 2 At cold time at ≦ Δ T, compressor in Hz 1 +. DELTA Hz running time t 2max After presetting, the compressor frequency continues to rise by a preset value Delta Hz. When the target frequency is<Hz 1 And when the frequency is plus delta Hz, the compressor runs according to the target frequency, the frequency does not rise any more, and the oil level protection control is finished. When the target frequency is>Hz 1 And when the frequency is plus delta Hz and minus delta Hz, continuously executing the step of increasing the frequency of the compressor until the target frequency is reached.
In specific implementation, after the minimum operation time is met, the frequency of the compressor is controlled by using the discharge superheat degree of the compressor as a judgment condition, so that in the embodiment, after the air conditioner is started, the operation time length of the compressor is monitored in real time and recorded. In this embodiment, after the compressor is started, the compressor operates according to a preset frequency, and the preset frequency may be set according to an actual requirement, which is not limited in this embodiment.
Step S20: and when the operation time length reaches a first lower limit time length, acquiring the exhaust temperature of the compressor and the temperature of the heat exchanger.
In a specific implementation, after obtaining the operation duration of the compressor, in this embodiment, the operation duration is compared with a first lower limit duration, which is a minimum operation duration that the compressor needs to meet, and the duration may be set according to an actual requirement, which is not limited in this embodiment. After the first lower limit time is reached, the exhaust temperature of the compressor and the temperature of the heat exchanger are further acquired, and the exhaust temperature of the compressor and the temperature of the heat exchanger are used for determining the operation process or the heat degree of the compressor.
Step S30: a temperature difference between the exhaust gas temperature and the temperature of the heat exchanger is determined.
It should be noted that after obtaining the exhaust gas temperature and the temperature of the heat exchanger, in the embodiment, he determines the superheat degree of the compressor by calculating the temperature difference between the exhaust gas temperature and the temperature of the heat exchanger. For example, assume that the exhaust temperature is T Row board Temperature of the heat exchanger is T 2 Will T Row board -T 2 Comparing with Δ T heat if T Row board -T 2 The heat of >. DELTA.T indicates that the compressor has reached a sufficient discharge superheat.
Step S40: and adjusting the running frequency of the compressor according to the temperature difference value.
In specific implementation, whether the lubricating effect of the compressor oil is good or the lubricating oil is in risk of remaining in the system can be judged based on the temperature difference, and then the operating frequency of the compressor is adjusted based on the judgment.
In the embodiment, the compressor of the air conditioner is controlled to operate according to the preset frequency, and the operation duration of the compressor is recorded; when the operation time length reaches a first lower limit time length, acquiring the exhaust temperature of the compressor and the temperature of the heat exchanger; determining a temperature difference between the exhaust gas temperature and the temperature of the heat exchanger; and adjusting the operating frequency of the compressor according to the temperature difference, determining the exhaust superheat degree of the compressor between the exhaust temperature and the temperature of the heat exchanger, and determining the exhaust superheat degree of the compressor as a determination condition after the minimum operating time is met, wherein the determination is realized by combining the exhaust superheat degree of the compressor and the determination condition, so that the time from starting to stable operation of the air conditioner under different operating conditions is optimized while effective oil lubrication protection of the compressor is ensured.
Referring to fig. 4, fig. 4 is a flowchart illustrating a control method of an air conditioner according to a second embodiment of the present invention.
Based on the first embodiment, in the method for controlling an air conditioner according to this embodiment, the step S40 specifically includes:
step S401: and when the temperature difference is larger than a preset difference threshold value, increasing the running frequency of the compressor according to a preset amplitude value.
It should be noted that, in this embodiment, corresponding control may be performed on the cooling working condition and the heating working condition, and the heating working condition is taken as an example to be described first.
In the heating condition, when the temperature difference is greater than the preset difference threshold, it is indicated that the compressor reaches a sufficient exhaust superheat degree at this time, and the compressor oil lubrication effect is good, in this case, the operating frequency of the compressor is raised according to the preset amplitude in this embodiment, the preset difference threshold in the heating condition in this embodiment is Δ T heat, and the preset amplitude is Δ Hz, that is, when the temperature difference is greater than Δ T heat, the operating frequency of the compressor is raised by Δ Hz, and the preset difference threshold and the preset amplitude may be set correspondingly according to actual requirements, which is not limited in this embodiment.
Further, if the temperature difference is less than or equal to the preset difference threshold, the expansion valve is opened too much, the refrigerant flow rate is insufficient, and there is a risk that the lubricating oil remains in the system, in this case, in this embodiment, the compressor is continuously controlled to continue operating according to the initially set preset frequency, the operating duration is recorded, and after a certain operating duration is reached, that is, the first upper limit duration is reached, the operating frequency of the compressor is increased according to the preset amplitude, where the operating frequency is increased according to the preset frequencyThe first upper limit duration is longer than the first lower limit duration, which may be set according to actual requirements, and this is not limited in this embodiment. For example, the compressor is controlled to continuously operate according to the preset frequency f0, and when the operation time reaches a first upper limit time t 1max And then, the frequency of the compressor is increased.
It should be noted that the process under the refrigeration condition is similar to the above process, and the difference is that under the refrigeration condition, the temperature difference is compared with a preset difference threshold Δ tcool, and Δ tcool is larger than Δ tcool.
The embodiment utilizes the superheat degree of the compressor as the frequency-rising judgment condition of the compressor, optimizes the time from starting to stable operation of the air conditioner under different use conditions while ensuring the effective oil lubrication protection of the compressor, and scientifically implements the oil lubrication protection of the compressor by distinguishing different practical conditions during refrigeration and heating.
Referring to fig. 5, fig. 5 is a flowchart illustrating a control method of an air conditioner according to a third embodiment of the present invention.
Based on the second embodiment, a third embodiment of the air conditioner control method according to the present invention is provided, in this embodiment, after step S401, the method further includes:
step S402: and comparing the current running frequency of the compressor after the frequency raising with a target running frequency.
After the frequency of the compressor is increased, the current operating frequency of the increased frequency compressor is further obtained in this embodiment, and then the current operating frequency is compared with the target operating frequency. Specifically, if the current operating frequency of the upscaled compressor is greater than the target operating frequency, the compressor is controlled to stop the upscaling and the compressor is controlled to operate according to the target operating frequency in the embodiment. For example, the current operation frequency of the compressor after frequency raising is fr +. DELTA.Hz, the target operation frequency is f0, and when fr +. DELTA.Hz > f0, the frequency raising is stopped, and the operation of the compressor is controlled according to the target operation frequency f 0.
Step S403: and when the current operating frequency is less than the target operating frequency, controlling the compressor to operate according to the current operating frequency, and recording the operating duration.
In a specific implementation, if the current operating frequency of the upscaled compressor is less than the target operating frequency, in this case, the present embodiment needs to continue to upscale the current operating frequency of the compressor. Before the frequency raising is continued, in this embodiment, the compressor needs to be controlled to continue to operate according to the current operation frequency after the frequency raising, and the operation duration is recorded at the same time. For example, the current operating frequency of the compressor after frequency raising is fr + Δ Hz, the target operating frequency is f0, and when fr + Δ Hz < f0, the compressor is continuously controlled to operate according to fr + Δ Hz.
Step S404: and when the operation time length reaches a second lower limit time length, acquiring the exhaust temperature of the compressor and the temperature of the heat exchanger.
After the operation time period reaches the second lower limit time period, the compressor discharge superheat degree is judged. For example, the compressor is controlled to operate at fr +. DELTA.Hz when the operating time reaches t 2min And then, acquiring the exhaust temperature of the compressor and the temperature of the heat exchanger, wherein the second lower limit time length is less than the first lower limit time length.
Step S405: determining the exhaust gas temperature and the temperature difference between the temperatures of the heat exchangers.
Step S406: and continuously adjusting the current operating frequency according to the temperature difference value.
In a specific implementation, if the temperature difference is greater than the preset difference threshold, the frequency of the compressor is directly increased according to the preset amplitude, for example, the current operating frequency of the frequency-increased compressor is increased from fr +. DELTA.Hz to fr +. DELTA.Hz + DELTA.Hz. On the contrary, if the temperature difference is less than or equal to the preset difference threshold, the compressor is continuously controlled to continue to operate according to the current operating frequency after the frequency is increased, the operating time duration is recorded, and after a certain operating time duration is reached, that is, a second upper limit time duration is reached, the operating frequency of the compressor is increased according to the preset amplitude, where the second upper limit time duration is greater than the second lower limit time duration, which may be set according to actual requirements, and this is not limited in this embodiment. For example, to control the compressor to continue operating at a predetermined frequency fr + Δ Hz, when operatingFor a second upper limit time t 2max And then, the frequency of the compressor is increased, and the current operation frequency is increased from fr + delta Hz to fr + delta Hz.
Further, after the secondary frequency boosting is completed, the current operating frequency of the compressor after the secondary frequency boosting is continuously compared with the target operating frequency in the embodiment, and the above-mentioned manner is continuously referred to based on the comparison result, and the process is repeated. For example, after the current operation frequency of the compressor after frequency raising is raised from fr + Δ Hz to fr + Δ Hz, in this embodiment, fr + Δ Hz is compared with the target operation frequency f0, if fr + Δ Hz is greater than f0, the frequency raising is stopped, the operation of the compressor is controlled according to the target operation frequency f0, and if it is smaller, the frequency raising is continued according to the continuation, and the frequency raising is performed to raise fr + Δ Hz. The control logic of the compressor frequency under the working conditions of refrigeration and heating in the embodiment is similar, and the modes described in the embodiment can be adopted.
The embodiment compares the running frequency of the compressor with the target frequency, and accurately controls the frequency of the compressor based on the comparison result, so that the oil lubrication protection time of the compressor at the starting stage of the compressor can be correspondingly changed according to different use conditions, and the air conditioner can more quickly realize stable operation.
Furthermore, an embodiment of the present invention further provides a storage medium, where an air conditioner control program is stored, and the air conditioner control program, when executed by a processor, implements the steps of the air conditioner control method as described above.
Since the storage medium adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.
Referring to fig. 6, fig. 6 is a block diagram illustrating a first embodiment of an air conditioner control device according to the present invention.
As shown in fig. 6, an air conditioner control device according to an embodiment of the present invention includes:
and the recording module 10 is used for controlling the compressor of the air conditioner to operate according to a preset frequency and recording the operation duration of the compressor.
In this embodiment, the execution main body of this embodiment may be the air conditioner control device, the air conditioner control device has functions of data processing, data communication, program operation, and the like, and the air conditioner control device may be a controller inside an air conditioner. Of course, other devices with similar functions may be used, and the present embodiment is not limited thereto. For convenience of explanation, the present embodiment will be described taking an air conditioner control device as an example.
At present, an air conditioning system starts a heating working condition after being placed for a long time under the condition of low temperature of outdoor environment, particularly extremely low temperature, and poor oil lubrication is a main reason for frequent fault of compressor sintering. This is because the compatibility between the lubricating oil and the refrigerant in the air conditioning system is negatively correlated with the lower temperature. In the process of continuously reducing the outdoor environment temperature, the refrigerant in the lubricating oil in the condenser of the outdoor unit can be separated out, the lubricating oil is deposited in a pipeline of a heat exchanger of the outdoor unit, after the air conditioner starts the heating working condition, the working temperature of the refrigerant of the heat exchanger of the outdoor unit is lower than the environment temperature, the separation of the refrigerant from the lubricating oil is intensified, and only a small amount of lubricating oil can be brought back when the refrigerant circulates back to the compressor, so that the running oil of the compressor is not lubricated enough, and the sintering is caused.
The existing solutions are mostly designed by the following aspects: the opening degree of the expansion valve at the time of starting is preset, and the opening degree of the expansion valve is changed after the forced operation is carried out for a preset time. After the starting, the preset frequency is forcibly operated, and the frequency can be changed after the preset time is met. The preset parameters under the existing scheme are all on the basis of a small amount of samples, after the parameters are fixed through forced operation, the air conditioning system can reach a certain stable oil circulation stable state, and the preset parameters are determined by judging that the oil level of lubricating oil in the compressor body at the moment meets the design requirements. The problem that the existing solution has is that the time required for the compressor to reach the target oil lubrication condition is different when the actual use environment is different, and in order to ensure the reliability, the preset time for running the preset protection frequency is often too long, which leads to the too long time for the air conditioner to reach the target frequency from starting under the actual use condition.
In order to solve the above-mentioned problems, the present embodiment introduces the degree of superheat of the compressor discharge as a determination condition for frequency increase, and controls the frequency of the compressor by using the degree of superheat of the compressor discharge as the determination condition after the minimum operation time is satisfied.
In a specific implementation, as shown in fig. 3, the air conditioner shown in fig. 3 includes an indoor side and an outdoor side, the indoor side includes an evaporator 8, an inner fan 81 and an indoor pipeline temperature sensor 82, the outdoor side includes an inverter compressor 1, a four-way valve 2, a condenser 3, an upper fan 31, a lower fan 32, an outdoor pipeline temperature sensor 33, an external environment temperature sensor 34, a filter 4, a heating throttle valve 5, a cooling throttle valve 6, a filter 7, a vapor-liquid separator 9, an electromagnetic valve 10 and a capillary tube 11.
It should be noted that, in the present scheme, not only a long time is required to enable the air conditioner to achieve stable operation, but also the lubrication conditions of the compressor are significantly different for the start of the refrigeration and heating working conditions, and the present scheme is not distinguished, but the present embodiment may be distinguished for different working conditions.
Specifically, when the air conditioner is in a heating working condition, the compressor is in a preset frequency Hz 1 Running time t 1 Presetting and detecting the temperature T of the evaporator 2 And exhaust temperature T Row board When T is Row board -T 2 >When delta T is hot, the compressor reaches enough exhaust superheat degree, the oil lubrication effect of the compressor is good, the frequency of the first stage of oil surface protection is finished, and the frequency of the compressor is increased by a preset value plus delta Hz; when T is Row board -T 2 When the temperature is less than or equal to delta T, the expansion valve is opened too much, the flow rate of the refrigerant is insufficient, the risk of lubricating oil remaining in the system exists, and the compressor continues to operate at the preset frequency Hz 1 Running time t 1max After presetting, the compressor frequency is increased by a preset value Delta Hz. When the target frequency is>Hz 1 At +. DELTA.Hz, when compressor is in Hz 1 +. Delta Hz running time t 2 Preset, when T Row board -T 2 >When the delta T is hot, the frequency of the second stage of oil surface protection is ended, and the frequency of the compressor continues to rise by delta Hz; when T is Row board -T 2 At heat ≦ Δ T, compressor in Hz 1 +. DELTA Hz running time t 2max After presetting, the compressor frequency continues to rise by a preset value Delta Hz. When the target frequency is<Hz 1 And when the frequency is plus delta Hz, the compressor operates according to the target frequency, the frequency does not rise any more, and the oil level protection control is finished. When the target frequency is>Hz 1 And when the frequency is plus delta Hz and minus delta Hz, continuously executing the step of increasing the frequency of the compressor until the target frequency is reached.
In the refrigerating condition, when the compressor is at the preset frequency Hz 1 Running time t 1 Presetting and detecting the temperature T of the condenser 3 And exhaust temperature T Row board When T is Row board -T 3 >When the temperature is delta T cold, the compressor reaches enough exhaust superheat degree, the oil lubrication effect of the compressor is good, the frequency of the first stage of oil surface protection is finished, and the frequency of the compressor is increased by a preset value plus delta Hz; when T is Row board -T 3 When the temperature is less than or equal to delta T, the expansion valve is opened too much, the flow rate of the refrigerant is insufficient, the risk of lubricating oil remaining in the system exists, and the compressor is operated at the preset frequency Hz 1 Running time t 1max After presetting, the compressor frequency is increased by a preset value Delta Hz. When the target frequency is>Hz 1 When positive Delta Hz, when the compressor is in Hz 1 +. DELTA Hz running time t 2 Preset (because at this time, t1 is preset when the oil lubrication condition is optimal to start>T2 preset), when T Row board -T 3 >And when the temperature is delta T cold, the frequency of the second stage of oil surface protection is finished, and the frequency of the compressor continues to rise by delta Hz. When T is Row board -T 2 At cold time at ≦ Δ T, compressor in Hz 1 +. DELTA Hz running time t 2max After presetting, the compressor frequency continues to rise by a preset value Delta Hz. When the target frequency is<Hz 1 And when the frequency is plus delta Hz, the compressor operates according to the target frequency, the frequency does not rise any more, and the oil level protection control is finished. When the target frequency is>Hz 1 And when the frequency is plus delta Hz and minus delta Hz, continuously executing the step of increasing the frequency of the compressor until the target frequency is reached.
In the specific implementation, after the minimum operation time is met, the discharge superheat degree of the compressor is used as a judgment condition to control the frequency of the compressor, so that the operation time length of the compressor is monitored in real time and recorded after the air conditioner is started in the embodiment. In this embodiment, after the compressor is started, the compressor operates according to a preset frequency, and the preset frequency may be set according to an actual requirement, which is not limited in this embodiment.
An obtaining module 20, configured to obtain a discharge temperature of the compressor and a temperature of the heat exchanger when the operation duration reaches a first lower limit duration.
In a specific implementation, after obtaining the operation duration of the compressor, in this embodiment, the operation duration is compared with a first lower limit duration, which is a minimum operation duration that the compressor needs to meet, and the duration may be set according to an actual requirement, which is not limited in this embodiment. After the first lower limit time is reached, the exhaust temperature of the compressor and the temperature of the heat exchanger are further acquired, and the exhaust temperature of the compressor and the temperature of the heat exchanger are used for determining the running process or the heat degree of the compressor.
A calculation module 30 is used to determine the temperature difference between the exhaust gas temperature and the temperature of the heat exchanger.
It should be noted that after obtaining the exhaust gas temperature and the temperature of the heat exchanger, the present embodiment determines the superheat degree of the compressor by calculating the temperature difference between the exhaust gas temperature and the temperature of the heat exchanger. For example, suppose the exhaust temperature is T Row board Temperature of heat exchanger is T 2 Will T Row board -T 2 Comparing with delta T heat if T Row board -T 2 The heat of >. DELTA.T indicates that the compressor has reached a sufficient discharge superheat.
And the adjusting module 40 is used for adjusting the operating frequency of the compressor according to the temperature difference value.
In specific implementation, whether the lubricating effect of the compressor oil is good or the lubricating oil is in risk of remaining in the system can be judged based on the temperature difference, and then the operating frequency of the compressor is adjusted based on the judgment.
In the embodiment, the compressor of the air conditioner is controlled to operate according to a preset frequency, and the operation duration of the compressor is recorded; when the operation time length reaches a first lower limit time length, acquiring the exhaust temperature of the compressor and the temperature of the heat exchanger; determining a temperature difference between the exhaust gas temperature and the temperature of the heat exchanger; and adjusting the operating frequency of the compressor according to the temperature difference, determining the exhaust superheat degree of the compressor between the exhaust temperature and the temperature of the heat exchanger, and after the minimum operating time is met, using the exhaust superheat degree of the compressor as a determination condition, and performing combined determination on the exhaust superheat degree and the temperature of the heat exchanger, so that the time from starting to stable operation of the air conditioner is optimized under different use conditions while effective oil lubrication protection of the compressor is ensured.
It should be understood that the above is only an example, and the technical solution of the present invention is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited in this respect.
It should be noted that the above-described work flows are only exemplary, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of them to achieve the purpose of the solution of the embodiment according to actual needs, and the present invention is not limited herein.
In addition, the technical details that are not described in detail in this embodiment can be referred to the air conditioner control method provided in any embodiment of the present invention, and are not described herein again.
Further, it is to be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of other like elements in a process, method, article, or system comprising the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solution of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g. Read Only Memory (ROM)/RAM, magnetic disk, optical disk), and includes several instructions for enabling a terminal device (e.g. a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. An air conditioner control method, characterized by comprising:
controlling a compressor of the air conditioner to operate according to a preset frequency, and recording the operation duration of the compressor;
when the operation time length reaches a first lower limit time length, acquiring the exhaust temperature of the compressor and the temperature of the heat exchanger;
determining a temperature difference between the exhaust gas temperature and the temperature of the heat exchanger; and
and adjusting the running frequency of the compressor according to the temperature difference value.
2. The air conditioner control method as claimed in claim 1, wherein said adjusting the operating frequency of the compressor according to the temperature difference value comprises:
and when the temperature difference is larger than a preset difference threshold value, increasing the running frequency of the compressor according to a preset amplitude value.
3. The air conditioner control method as claimed in claim 1, wherein said adjusting the operating frequency of the compressor according to the temperature difference value comprises:
when the temperature difference is smaller than or equal to a preset difference threshold value, controlling the compressor to continue to operate according to the preset frequency, and recording the operation duration; and
and when the operation time length reaches a first upper limit time length, increasing the operation frequency of the compressor according to a preset amplitude value.
4. The air conditioner controlling method as claimed in claim 2 or 3, wherein after the raising of the operating frequency of the compressor by the preset amplitude, further comprising:
comparing the current operating frequency of the compressor after the frequency increase with a target operating frequency;
when the current operating frequency is smaller than the target operating frequency, controlling the compressor to operate according to the current operating frequency, and recording the operating duration;
when the operation time length reaches a second lower limit time length, acquiring the exhaust temperature of the compressor and the temperature of the heat exchanger;
determining the exhaust gas temperature and the temperature difference between the temperatures of the heat exchangers; and
and continuously adjusting the current operating frequency according to the temperature difference value.
5. The air conditioner control method according to claim 4, wherein said continuously adjusting the current operation frequency according to the temperature difference value comprises:
and when the temperature difference is greater than the preset difference threshold value, increasing the current operating frequency according to a preset amplitude value, and returning to execute the step of comparing the increased current operating frequency of the compressor with the target operating frequency.
6. The air conditioner control method according to claim 4, wherein said continuously adjusting the current operation frequency according to the temperature difference value comprises:
when the temperature difference is smaller than or equal to a preset difference threshold value, controlling the compressor to continue to operate according to the current operation frequency, and recording the operation duration; and
and when the operation time length reaches a second upper limit time length, increasing the current operation frequency according to a preset amplitude value, and returning to execute the step of comparing the increased current operation frequency of the compressor with the target operation frequency.
7. The air conditioner controlling method as claimed in claim 4, wherein after comparing the current operating frequency of the compressor after the frequency up-conversion with a target operating frequency, further comprising:
and when the current operating frequency is greater than the target operating frequency, controlling the compressor to stop increasing the frequency and controlling the compressor to operate according to the target operating frequency.
8. An air conditioner control device characterized by comprising:
the recording module is used for controlling a compressor of the air conditioner to operate according to a preset frequency and recording the operation duration of the compressor;
the acquisition module is used for acquiring the exhaust temperature of the compressor and the temperature of the heat exchanger when the operation time length reaches a first lower limit time length;
a calculation module for determining a temperature difference between the exhaust gas temperature and the temperature of the heat exchanger; and
and the adjusting module is used for adjusting the running frequency of the compressor according to the temperature difference value.
9. An air conditioner, characterized in that the air conditioner comprises: a memory, a processor, and an air conditioner control program stored on the memory and run on the processor, the air conditioner control program configured to implement the air conditioner control method of any one of claims 1 to 7.
10. A storage medium, characterized in that an air conditioner control program is stored thereon, which when executed by a processor implements the air conditioner control method according to any one of claims 1 to 7.
CN202211008563.6A 2022-08-22 2022-08-22 Air conditioner control method and device, air conditioner and storage medium Pending CN115307285A (en)

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Application Number Priority Date Filing Date Title
CN202211008563.6A CN115307285A (en) 2022-08-22 2022-08-22 Air conditioner control method and device, air conditioner and storage medium

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115992988A (en) * 2022-11-28 2023-04-21 珠海格力电器股份有限公司 Exhaust control method, device, equipment and medium of portable air conditioner compressor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115992988A (en) * 2022-11-28 2023-04-21 珠海格力电器股份有限公司 Exhaust control method, device, equipment and medium of portable air conditioner compressor
CN115992988B (en) * 2022-11-28 2024-05-28 珠海格力电器股份有限公司 Exhaust control method, device, equipment and medium of portable air conditioner compressor

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