CN117073194A - Electronic valve control method and device and related equipment - Google Patents
Electronic valve control method and device and related equipment Download PDFInfo
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- CN117073194A CN117073194A CN202310925998.5A CN202310925998A CN117073194A CN 117073194 A CN117073194 A CN 117073194A CN 202310925998 A CN202310925998 A CN 202310925998A CN 117073194 A CN117073194 A CN 117073194A
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- expansion valve
- electronic expansion
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000010438 heat treatment Methods 0.000 claims abstract description 84
- 230000008859 change Effects 0.000 claims description 24
- 238000005457 optimization Methods 0.000 claims description 15
- 230000007613 environmental effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 17
- 238000009434 installation Methods 0.000 abstract description 17
- 238000005057 refrigeration Methods 0.000 abstract description 16
- 230000001105 regulatory effect Effects 0.000 abstract description 6
- 230000001276 controlling effect Effects 0.000 description 64
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000012938 design process Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- F24F11/65—Electronic processing for selecting an operating mode
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- 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
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- 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
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
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- 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
Abstract
The invention relates to an electronic valve control method, a device and related equipment, and relates to the technical field of electronic valve control. It can be understood that by adopting the technical scheme, the actual running pressure values of the indoor unit and the outdoor unit can be compared with the preset pressure values, so that the installation relative positions of the indoor unit and the outdoor unit are analyzed to select the control mode, the opening of the electronic expansion valve is regulated, the actual use effects of refrigeration and heating are improved, and the refrigeration and heating comfort experience of a user is improved.
Description
Technical Field
The invention relates to the technical field of electronic valve control, in particular to an electronic valve control method, an electronic valve control device and related equipment.
Background
When the heating system or the refrigerating system is installed and used, the heating system or the refrigerating system is required to be installed in a differentiated mode according to different installation areas. For example, when the air conditioner is installed and used, the installation positions of the outdoor units of the air conditioner are different due to the difference of the room structures of users, and the outdoor units of the air conditioner can be near the same horizontal plane as the indoor units, and can be installed at a position higher or lower than the indoor units, so that the installation and use processes of the air conditioner are different from the design processes, and the refrigerating and heating effects are affected.
Therefore, how to ensure the refrigerating and heating effects in actual use of the user when the installation height of the external machine is not in the same horizontal plane with the indoor machine becomes a technical problem to be solved in the prior art.
Disclosure of Invention
Therefore, the invention aims to provide an electronic valve control method, an electronic valve control device and related equipment, so as to solve the problem that the refrigerating and heating effects are affected when the installation height of an external machine is not in the same horizontal plane with that of an indoor machine at present.
In order to achieve the above purpose, the invention adopts the following technical scheme:
in one aspect, a control method of an electronic expansion valve includes:
acquiring indoor and outdoor environment parameters of a target temperature control system, and acquiring a reference pressure value corresponding to the indoor and outdoor environment parameters in a preset environment parameter and pressure value corresponding relation library;
Determining a current pressure value, and calculating the deviation of the reference pressure value and the current pressure value as pressure value deviation;
determining a target control mode in a preset control mode according to the magnitude relation between the pressure value deviation and a preset deviation threshold value, and controlling the opening change of the electronic expansion valve according to the target control mode; wherein, each preset control mode is provided with different opening parameters of the electronic expansion valve.
Optionally, the acquiring the indoor and outdoor environment parameters of the target temperature control system includes:
responding to a control optimization mode triggering instruction, and entering a control optimization mode; and in the control optimization mode, acquiring the indoor and outdoor environment parameters of the target temperature control system.
Optionally, the determining a target control mode in the preset control mode according to the magnitude relation between the pressure value deviation and the preset deviation threshold value, and controlling the opening change of the electronic expansion valve according to the target control mode includes:
when the pressure value deviation is larger than or equal to a first preset deviation threshold value and smaller than or equal to a second preset deviation threshold value, determining a first control mode as a target control mode in a preset control mode, and controlling the opening of the electronic expansion valve according to the first control mode; the first control mode is to control the opening degree of the electronic expansion valve according to the reference opening degree parameter of the electronic expansion valve.
Optionally, the determining a target control mode in the preset control mode according to the magnitude relation between the pressure value deviation and the preset deviation threshold value, and controlling the opening change of the electronic expansion valve according to the target control mode includes:
when the pressure value deviation is smaller than a first preset deviation threshold value, judging whether the current operation mode of the target temperature control system is heating operation or not, if the current operation mode of the target temperature control system is heating operation, determining a second control mode as a target control mode in a preset control mode, and controlling the opening of the electronic expansion valve according to the second control mode;
the second control mode is to control the opening of the electronic expansion valve according to the magnitude relation between the frequency and a preset frequency threshold.
Optionally, controlling the opening of the electronic expansion valve according to the magnitude relation between the frequency and the preset frequency threshold value includes:
in a heating operation mode, if the current frequency is smaller than a first preset frequency threshold value, controlling the opening of the electronic expansion valve to be reduced by the first threshold value, and operating for a preset time period;
if the current frequency is greater than or equal to a first preset frequency threshold value and less than or equal to a second preset frequency threshold value, controlling the opening of the electronic expansion valve to be reduced by the second threshold value, and running for a preset time period;
If the current frequency is greater than the second preset frequency threshold, controlling the opening of the electronic expansion valve to reduce a third threshold, and running for a preset time period;
wherein the first preset frequency threshold is less than the second preset frequency threshold; the first threshold is greater than the second threshold, and the second threshold is greater than the third threshold.
Optionally, the determining a target control mode in the preset control mode according to the magnitude relation between the pressure value deviation and the preset deviation threshold value, and controlling the opening change of the electronic expansion valve according to the target control mode includes:
when the pressure value deviation is larger than a second preset deviation threshold value, judging whether the current operation mode of the target temperature control system is heating operation or not, if the current operation mode of the target temperature control system is non-heating operation, determining a second control mode as a target control mode in a preset control mode, and controlling the opening of the electronic expansion valve according to the second control mode;
the second control mode is to control the opening of the electronic expansion valve according to the magnitude relation between the frequency and a preset frequency threshold.
Optionally, controlling the opening of the electronic expansion valve according to the magnitude relation between the frequency and the preset frequency threshold value includes:
In a non-heating operation mode, if the current frequency is smaller than a first preset frequency threshold value, controlling the opening of the electronic expansion valve to increase the first threshold value, and operating for a preset time period;
if the current frequency is greater than or equal to a first preset frequency threshold value and less than or equal to a second preset frequency threshold value, controlling the opening of the electronic expansion valve to increase the second threshold value, and running for a preset time period;
if the current frequency is greater than the second preset frequency threshold, controlling the opening of the electronic expansion valve to increase a third threshold, and running for a preset time period;
wherein the first preset frequency threshold is less than the second preset frequency threshold; the first threshold is greater than the second threshold, and the second threshold is greater than the third threshold.
Optionally, the determining a target control mode in the preset control mode according to the magnitude relation between the pressure value deviation and the preset deviation threshold value, and controlling the opening change of the electronic expansion valve according to the target control mode includes:
when the pressure value deviation is larger than a second preset deviation threshold value, judging whether the current operation mode of the target temperature control system is heating operation or not, if the current operation mode of the target temperature control system is heating operation, determining a third control mode as a target control mode in preset control modes, and controlling the opening of the electronic expansion valve according to the third control mode;
The third control mode is to control the opening of the electronic expansion valve according to the magnitude relation between the frequency and a preset frequency threshold.
Optionally, controlling the opening of the electronic expansion valve according to the magnitude relation between the frequency and the preset frequency threshold value includes:
in a heating operation mode, if the current frequency is smaller than a first preset frequency threshold value, controlling the opening of the electronic expansion valve to increase the first threshold value, and operating for a preset time period;
if the current frequency is greater than or equal to a first preset frequency threshold value and less than or equal to a second preset frequency threshold value, controlling the opening of the electronic expansion valve to increase the second threshold value, and running for a preset time period;
if the current frequency is greater than the second preset frequency threshold, controlling the opening of the electronic expansion valve to increase a third threshold, and running for a preset time period;
wherein the first preset frequency threshold is less than the second preset frequency threshold; the first threshold is greater than the second threshold, and the second threshold is greater than the third threshold.
Optionally, the determining a target control mode in the preset control mode according to the magnitude relation between the pressure value deviation and the preset deviation threshold value, and controlling the opening change of the electronic expansion valve according to the target control mode includes:
When the pressure value deviation is smaller than a first preset deviation threshold value, judging whether the current operation mode of the target temperature control system is heating operation or not, if the current operation mode of the target temperature control system is non-heating operation, determining a third control mode as a target control mode in a preset control mode, and controlling the opening of the electronic expansion valve according to the third control mode;
the third control mode is to control the opening of the electronic expansion valve according to the magnitude relation between the frequency and a preset frequency threshold.
Optionally, controlling the opening of the electronic expansion valve according to the magnitude relation between the frequency and the preset frequency threshold value includes:
in a non-heating operation mode, if the current frequency is smaller than a first preset frequency threshold value, controlling the opening of the electronic expansion valve to be reduced by the first threshold value, and operating for a preset time period;
if the current frequency is greater than or equal to a first preset frequency threshold value and less than or equal to a second preset frequency threshold value, controlling the opening of the electronic expansion valve to be reduced by the second threshold value, and running for a preset time period;
if the current frequency is greater than the second preset frequency threshold, controlling the opening of the electronic expansion valve to reduce a third threshold, and running for a preset time period;
wherein the first preset frequency threshold is less than the second preset frequency threshold; the first threshold is greater than the second threshold, and the second threshold is greater than the third threshold.
In yet another aspect, a control device of an electronic expansion valve includes:
the acquisition module is used for acquiring indoor and outdoor environment parameters of the target temperature control system and acquiring a reference pressure value corresponding to the indoor and outdoor environment parameters in a preset environment parameter and pressure value corresponding relation library;
the calculation module is used for determining a current pressure value and calculating the deviation between the reference pressure value and the current pressure value as a pressure value deviation;
the control module is used for determining a target control mode in a preset control mode according to the magnitude relation between the pressure value deviation and a preset deviation threshold value, and controlling the opening change of the electronic expansion valve according to the target control mode; wherein, each preset control mode is provided with different opening parameters of the electronic expansion valve.
In yet another aspect, a control apparatus for an electronic expansion valve includes a processor and a memory, the processor coupled to the memory:
the processor is used for calling and executing the program stored in the memory;
the memory is configured to store the program, and the program is configured to at least execute the control method of the electronic expansion valve described in any one of the above.
In yet another aspect, an air conditioner includes the control apparatus of the electronic expansion valve described above.
The technical scheme provided by the invention has at least the following beneficial effects:
and determining a corresponding reference pressure value through indoor and outdoor environment parameters of the target temperature control system, so as to calculate the deviation between the reference pressure value and the current pressure value, and determining a target control mode according to the magnitude relation between the pressure value deviation and a preset deviation threshold value as the pressure value deviation, thereby controlling the opening change of the electronic expansion valve according to the opening parameter of the electronic expansion valve set in the target control mode. It can be understood that by adopting the technical scheme, the actual running pressure values of the indoor unit and the outdoor unit can be compared with the preset pressure values, so that the installation relative positions of the indoor unit and the outdoor unit are analyzed to select the control mode, the opening of the electronic expansion valve is regulated, the actual use effects of refrigeration and heating are improved, and the refrigeration and heating comfort experience of a user is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a control method of an electronic expansion valve according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a control device of an electronic expansion valve according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a control device for an electronic expansion valve according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
As described in the background art, when a heating system or a cooling system is installed and used, it is necessary to install the heating system or the cooling system differently according to the installation areas. For example, when the air conditioner is installed and used, the installation positions of the outdoor units of the air conditioner are different due to the difference of the room structures of users, and the outdoor units of the air conditioner can be near the same horizontal plane as the indoor units, and can be installed at a position higher or lower than the indoor units, so that the installation and use processes of the air conditioner are different from the design processes, and the refrigerating and heating effects are affected.
Therefore, how to ensure the refrigerating and heating effects in actual use of the user when the installation height of the external machine is not in the same horizontal plane with the indoor machine becomes a technical problem to be solved in the prior art.
Based on the above, the embodiment of the invention provides a control method and a control device of an electronic valve and related equipment, so as to ensure the refrigerating and heating effects in actual use of a user.
Fig. 1 is a flow chart of a control method of an electronic expansion valve according to an embodiment of the present invention, referring to fig. 1, the embodiment may include the following steps:
s11, acquiring indoor and outdoor environment parameters of a target temperature control system, and acquiring a reference pressure value corresponding to the indoor and outdoor environment parameters in a preset environment parameter and pressure value correspondence library;
step S12, determining a current pressure value, and calculating the deviation between a reference pressure value and the current pressure value as a pressure value deviation;
step S13, determining a target control mode in a preset control mode according to the magnitude relation between the pressure value deviation and a preset deviation threshold value, and controlling the opening change of the electronic expansion valve according to the target control mode; wherein, each preset control mode is provided with different opening parameters of the electronic expansion valve.
The refrigerant is in heat exchange circulation in the air conditioning system, and the relative installation heights of the indoor unit and the outdoor unit of the air conditioner influence the evaporation pressure, the condensation pressure, the system flow and the like in the refrigerant circulation process, so that the performance and the reliability of the air conditioning system are influenced.
In a specific implementation, the target temperature control system may be defined as an air conditioner or other refrigeration device, heating device, or the like. The control method of the electronic expansion valve of the present application will be described with reference to an air conditioner, wherein the electronic expansion valve may be an electronic expansion valve in an air conditioner, for example, an electronic expansion valve of an MT cabinet. The description will be made of an electronic expansion valve, and a general circulation flow of the refrigeration system is a compressor, a condenser, a throttle device (here, the throttle device is an electronic expansion valve), an evaporator, and a compressor.
The indoor and outdoor environment parameters of the target temperature control system can be temperature and humidity, and a corresponding relation library of the temperature and the humidity and the pressure value is pre-built, wherein the pressure value in the relation library is a reference pressure value corresponding to the temperature and the humidity, namely, when an inner machine and an outer machine of the air conditioner are installed on the same horizontal plane for testing, the reference pressure value corresponding to the temperature and the humidity under the condition of stable operation is established.
After the current indoor and outdoor environment parameters of the air conditioner are obtained, a corresponding reference pressure value alpha is determined in a relation library, and a current pressure value beta is obtained, so that the deviation of the two is calculated and used as pressure value deviation gamma= (alpha-beta)/alpha; and judging the magnitude relation between the gamma and a preset deviation threshold value, thereby determining a target control mode.
Specifically, different control modes can be preset according to the installation relative positions of the indoor unit and the outdoor unit, and different electronic expansion valve opening parameters are set in each different preset control mode.
It can be understood that the corresponding reference pressure value is determined according to the indoor and outdoor environment parameters of the target temperature control system, so that the deviation between the reference pressure value and the current pressure value is calculated, the target control mode is determined according to the magnitude relation between the pressure value deviation and the preset deviation threshold value, and the opening change of the electronic expansion valve is controlled according to the opening parameter of the electronic expansion valve set in the target control mode. It can be understood that by adopting the technical scheme, the actual running pressure values of the indoor unit and the outdoor unit can be compared with the preset pressure values, so that the installation relative positions of the indoor unit and the outdoor unit are analyzed to select the control mode, the opening of the electronic expansion valve is regulated, the actual use effects of refrigeration and heating are improved, and the refrigeration and heating comfort experience of a user is improved.
In some embodiments, obtaining indoor and outdoor environmental parameters of a target temperature control system includes:
responding to a control optimization mode trigger instruction, and entering a control optimization mode; and in the control optimization mode, acquiring the indoor and outdoor environment parameters of the target temperature control system.
The control optimization mode trigger instruction may be a start instruction or a specific instruction input by a user.
It can be understood that by setting the control optimization mode triggering instruction, the air conditioner can enter the control optimization module, and the indoor and outdoor environment parameters of the target temperature control system are acquired in the mode, so that the control method of the electronic expansion valve provided by the embodiment is executed, and the user can conveniently select the mode.
In some embodiments, determining a target control mode in the preset control modes according to the magnitude relation between the pressure value deviation and the preset deviation threshold value, and controlling the electronic expansion valve opening to change according to the target control mode includes:
when the pressure value deviation is greater than or equal to a first preset deviation threshold value and the pressure value deviation is less than or equal to a second preset deviation threshold value, determining a first control mode as a target control mode in the preset control modes, and controlling the opening of the electronic expansion valve according to the first control mode; the first control mode is to control the opening degree of the electronic expansion valve according to the reference opening degree parameter of the electronic expansion valve.
The preset deviation threshold value can be set to include a first preset deviation threshold value and a second preset deviation threshold value, and the first preset deviation threshold value is smaller than the second preset deviation threshold value. For example, the first preset deviation threshold may be-5%, and the second preset deviation threshold may be 5%, and the specific value is described as an example, but it should be noted that the specific value in the present embodiment is not limited to this.
When the deviation of the pressure value is more than or equal to-5% and less than or equal to 5%, determining a first control mode to control the opening of the electronic expansion valve. The first control mode may be: and under heating and non-heating modes, the opening parameters of the electronic expansion valve are obtained by testing on the basis that the indoor unit and the outdoor unit are placed on the same horizontal plane.
It can be understood that by setting the first control mode, the control of the electronic expansion valve is realized when the indoor unit and the outdoor unit are placed on the same horizontal plane.
In some embodiments, determining a target control mode in the preset control modes according to the magnitude relation between the pressure value deviation and the preset deviation threshold value, and controlling the electronic expansion valve opening to change according to the target control mode includes:
when the pressure value deviation is smaller than a first preset deviation threshold value, judging whether the current operation mode of the target temperature control system is heating operation or not, if the current operation mode of the target temperature control system is heating operation, determining a second control mode as a target control mode in the preset control modes, and controlling the opening of the electronic expansion valve according to the second control mode;
The second control mode is to control the opening of the electronic expansion valve according to the magnitude relation between the frequency and a preset frequency threshold value.
In some embodiments, determining a target control mode in the preset control modes according to the magnitude relation between the pressure value deviation and the preset deviation threshold value, and controlling the electronic expansion valve opening to change according to the target control mode includes:
when the pressure value deviation is larger than a second preset deviation threshold value, judging whether the current operation mode of the target temperature control system is heating operation or not, if the current operation mode of the target temperature control system is non-heating operation, determining that the second control mode is a target control mode in the preset control modes, and controlling the opening of the electronic expansion valve according to the second control mode;
the second control mode is to control the opening of the electronic expansion valve according to the magnitude relation between the frequency and a preset frequency threshold value.
For example, when judging that the pressure value deviation gamma is less than-5%, judging whether the current running mode of the temperature control system is a heating mode or not, and determining a second control mode to control the opening of the electronic expansion valve in the heating mode; and determining a third control mode to control the opening of the electronic expansion valve when the current operation mode is a non-heating mode.
It will be appreciated that the second control mode and the third control mode may be set to select between a heating mode and a non-heating mode to enhance the operation accuracy.
In some embodiments, in the second control mode, controlling the opening of the electronic expansion valve according to the magnitude relation between the frequency and the preset frequency threshold value includes:
in a heating operation mode, if the current frequency is smaller than a first preset frequency threshold value, controlling the opening of the electronic expansion valve to be reduced by the first threshold value, and operating for a preset time period;
if the current frequency is greater than or equal to a first preset frequency threshold value and less than or equal to a second preset frequency threshold value, controlling the opening of the electronic expansion valve to be reduced by the second threshold value, and running for a preset time period;
if the current frequency is greater than the second preset frequency threshold, controlling the opening of the electronic expansion valve to reduce a third threshold, and running for a preset time period;
wherein the first preset frequency threshold is less than the second preset frequency threshold; the first threshold is greater than the second threshold, and the second threshold is greater than the third threshold.
For example, the second control mode may be: when the current operation mode is a heating operation mode, if the current frequency A is smaller than a first preset frequency threshold (for example, 40 Hz), controlling the opening of the electronic expansion valve to be reduced by the first threshold (for example, 3P), and operating for a preset time period (for example, 300 s); if the first preset frequency threshold value (for example, 40 Hz) is less than or equal to the current frequency A is less than or equal to the second preset frequency threshold value (for example, 80 Hz), controlling the opening degree of the electronic expansion valve to be reduced by the second threshold value (for example, 2P), and running for a preset time period (for example, 300 s); if the current frequency A is greater than a second preset frequency threshold (e.g., 80 Hz), the opening degree of the electronic expansion valve is controlled to be reduced by a third threshold (e.g., 1P), and the electronic expansion valve is operated for a preset time period (e.g., 300 s). It should be noted that the numerical values in the embodiments of the present application are listed and not limited. And then detecting and calculating the gamma value again until the gamma is more than or equal to-5%, and maintaining the current operation parameters.
In some embodiments, in the second control mode, controlling the opening of the electronic expansion valve according to the magnitude relation between the frequency and the preset frequency threshold value includes:
in a non-heating operation mode, if the current frequency is smaller than a first preset frequency threshold value, controlling the opening of the electronic expansion valve to increase the first threshold value, and operating for a preset time period;
if the current frequency is greater than or equal to a first preset frequency threshold value and less than or equal to a second preset frequency threshold value, controlling the opening of the electronic expansion valve to increase the second threshold value, and running for a preset time period;
if the current frequency is greater than the second preset frequency threshold, controlling the opening of the electronic expansion valve to increase a third threshold, and running for a preset time period;
wherein the first preset frequency threshold is less than the second preset frequency threshold; the first threshold is greater than the second threshold, and the second threshold is greater than the third threshold.
For example, the second control mode may be: when the current operation mode is a non-heating operation mode, if the current frequency A is less than a first preset frequency threshold (for example, 40 Hz), controlling the opening degree of the electronic expansion valve to be increased by a first threshold (for example, 3P), and operating for a preset time period (for example, 300 s); if the first preset frequency threshold value (for example, 40 Hz) is less than or equal to the current frequency A is less than or equal to the second preset frequency threshold value (for example, 80 Hz), controlling the opening degree of the electronic expansion valve to be increased by the second threshold value (for example, 2P), and running for a preset time period (for example, 300 s); if the current frequency A is greater than a second preset frequency threshold (for example, 80 Hz), the opening degree of the electronic expansion valve is controlled to be increased by a third threshold (for example, 1P), and the electronic expansion valve is operated for a preset time period (for example, 300 s). It should be noted that the numerical values in the embodiments of the present application are listed and not limited. The value of gamma is again detected and calculated until gamma is less than or equal to 5%, and the current operation parameters are maintained.
In some embodiments, determining a target control mode in the preset control modes according to the magnitude relation between the pressure value deviation and the preset deviation threshold value, and controlling the electronic expansion valve opening to change according to the target control mode includes:
when the pressure value deviation is larger than a second preset deviation threshold value, judging whether the current operation mode of the target temperature control system is heating operation or not, if the current operation mode of the target temperature control system is heating operation, determining a third control mode as a target control mode in the preset control modes, and controlling the opening of the electronic expansion valve according to the third control mode;
the third control mode is to control the opening of the electronic expansion valve according to the magnitude relation between the frequency and a preset frequency threshold.
In some embodiments, determining a target control mode in the preset control modes according to the magnitude relation between the pressure value deviation and the preset deviation threshold value, and controlling the electronic expansion valve opening to change according to the target control mode includes:
when the pressure value deviation is smaller than a first preset deviation threshold value, judging whether the current operation mode of the target temperature control system is heating operation or not, if the current operation mode of the target temperature control system is non-heating operation, determining a third control mode as a target control mode in the preset control modes, and controlling the opening of the electronic expansion valve according to the third control mode;
The third control mode is to control the opening of the electronic expansion valve according to the magnitude relation between the frequency and a preset frequency threshold.
When judging that the pressure value deviation gamma is more than 5%, judging whether the current operation mode is heating, if so, determining a third control mode to control the opening of the electronic expansion valve; and if the current operation mode is non-heating operation, determining a second control mode to control the opening degree of the electronic expansion valve.
When judging that the pressure value deviation gamma is less than-5%, judging whether the current operation mode is heating, if so, determining a second control mode to control the opening of the electronic expansion valve; and if the current operation mode is non-heating operation, determining a third control mode to control the opening degree of the electronic expansion valve.
In some embodiments, in the third control mode, controlling the opening of the electronic expansion valve according to the magnitude relation between the frequency and the preset frequency threshold value includes:
in a heating operation mode, if the current frequency is smaller than a first preset frequency threshold value, controlling the opening of the electronic expansion valve to increase the first threshold value, and operating for a preset time period;
if the current frequency is greater than or equal to a first preset frequency threshold value and less than or equal to a second preset frequency threshold value, controlling the opening of the electronic expansion valve to increase the second threshold value, and running for a preset time period;
If the current frequency is greater than the second preset frequency threshold, controlling the opening of the electronic expansion valve to increase a third threshold, and running for a preset time period;
wherein the first preset frequency threshold is less than the second preset frequency threshold; the first threshold is greater than the second threshold, and the second threshold is greater than the third threshold.
For example, the third control mode may be: when the current operation mode is a heating operation mode, if the current frequency A is less than a first preset frequency threshold (for example, 40 Hz), controlling the opening of the electronic expansion valve to be increased by a first threshold (for example, 3P), and operating for a preset time period (for example, 300 s); if the first preset frequency threshold value (for example, 40 Hz) is less than or equal to the current frequency A is less than or equal to the second preset frequency threshold value (for example, 80 Hz), controlling the opening degree of the electronic expansion valve to be increased by the second threshold value (for example, 2P), and running for a preset time period (for example, 300 s); if the current frequency A is greater than a second preset frequency threshold (for example, 80 Hz), the opening degree of the electronic expansion valve is controlled to be increased by a third threshold (for example, 1P), and the electronic expansion valve is operated for a preset time period (for example, 300 s). It should be noted that the numerical values in the embodiments of the present application are listed and not limited.
In some embodiments, in the third control mode, controlling the electronic expansion valve opening according to the magnitude relation between the frequency and the preset frequency threshold includes:
In a non-heating operation mode, if the current frequency is smaller than a first preset frequency threshold value, controlling the opening of the electronic expansion valve to be reduced by the first threshold value, and operating for a preset time period;
if the current frequency is greater than or equal to a first preset frequency threshold value and less than or equal to a second preset frequency threshold value, controlling the opening of the electronic expansion valve to be reduced by the second threshold value, and running for a preset time period;
if the current frequency is greater than the second preset frequency threshold, controlling the opening of the electronic expansion valve to reduce a third threshold, and running for a preset time period;
wherein the first preset frequency threshold is less than the second preset frequency threshold; the first threshold is greater than the second threshold, and the second threshold is greater than the third threshold.
For example, the third control mode may be: when the current operation mode is a non-heating operation mode, if the current frequency A is smaller than a first preset frequency threshold (for example, 40 Hz), controlling the opening degree of the electronic expansion valve to be reduced by a first threshold (for example, 3P), and operating for a preset time period (for example, 300 s); if the first preset frequency threshold value (for example, 40 Hz) is less than or equal to the current frequency A is less than or equal to the second preset frequency threshold value (for example, 80 Hz), controlling the opening degree of the electronic expansion valve to be reduced by the second threshold value (for example, 2P), and running for a preset time period (for example, 300 s); if the current frequency A is greater than a second preset frequency threshold (e.g., 80 Hz), the opening degree of the electronic expansion valve is controlled to be reduced by a third threshold (e.g., 1P), and the electronic expansion valve is operated for a preset time period (e.g., 300 s). It should be noted that the numerical values in the embodiments of the present application are listed and not limited.
It can be understood that the different control modes respectively arranged in the first control mode, the second control mode and the third control mode realize the consideration of the installation positions of different internal machines and external machines.
Wherein, when the outdoor unit installation position is lower than the indoor unit (second control mode): in the refrigeration operation mode, the resistance is increased when the liquid-phase refrigerant enters the indoor unit from the outdoor unit, so that the circulation flow of the system is reduced, and the refrigeration effect is affected. At the same time, the condensing pressure of the system can rise, and the reliability of the system operation can be affected by the excessive condensing pressure. The system circulation flow can be improved by moderately increasing the opening of the electronic expansion valve, and meanwhile, the system resistance is reduced, so that the refrigeration effect and the system operation reliability are guaranteed. In the heating operation mode, the resistance is reduced when the liquid-phase refrigerant enters the outdoor unit from the indoor unit, the circulation flow of the system is increased, the evaporation superheat degree is reduced, the phenomenon of liquid impact even caused by incomplete evaporation occurs seriously, the compressor is damaged, and the reliability of the system is affected. Meanwhile, the condensing pressure is reduced, the condensing temperature is also reduced, and the heat exchange temperature at the condensing side is reduced, so that the indoor heating capacity is influenced. The system circulation flow can be reduced by moderately reducing the opening of the electronic expansion valve, and the condensing pressure and the evaporation superheat degree are regulated at the same time, so that the system circulation flow is helpful for ensuring the heating effect and the system operation reliability.
When the outdoor unit is installed at a position higher than the indoor unit (third control mode), contrary to the above situation, in the refrigeration operation mode, the system circulation flow increases, the evaporation superheat degree becomes smaller, the condensation pressure decreases, which results in poor refrigeration effect, and the system state can be adjusted by moderately reducing the electronic expansion valve, so as to ensure refrigeration effect. In the heating operation mode, the circulation flow of the system is reduced, the heating effect is directly affected, the state of the system can be regulated by moderately increasing the opening of the electronic expansion valve, and the heating effect is ensured.
Based on a general inventive concept, the embodiment of the present invention also provides a control device of an electronic expansion valve, for implementing the above method embodiment.
Fig. 2 is a schematic structural diagram of a control device for an electronic expansion valve according to an embodiment of the present invention.
As shown in fig. 2, the apparatus provided in this embodiment may include:
the acquiring module 21 is configured to acquire an indoor and outdoor environmental parameter of the target temperature control system, and acquire a reference pressure value corresponding to the indoor and outdoor environmental parameter in a corresponding relation library of a preset environmental parameter and a pressure value;
a calculation module 22, configured to determine a current pressure value, and calculate a deviation between the reference pressure value and the current pressure value as a pressure value deviation;
The control module 23 is configured to determine a target control mode in a preset control mode according to a magnitude relation between the pressure value deviation and a preset deviation threshold value, and control an opening change of the electronic expansion valve according to the target control mode; wherein, each preset control mode is provided with different opening parameters of the electronic expansion valve.
Optionally, the acquiring module is specifically configured to enter a control optimization mode in response to a control optimization mode triggering instruction; and in the control optimization mode, acquiring the indoor and outdoor environment parameters of the target temperature control system.
Optionally, the control module is specifically configured to determine, in the preset control mode, that the first control mode is a target control mode, and control the opening of the electronic expansion valve according to the first control mode when the pressure value deviation is greater than or equal to a first preset deviation threshold and the pressure value deviation is less than or equal to a second preset deviation threshold; the first control mode is to control the opening degree of the electronic expansion valve according to the reference opening degree parameter of the electronic expansion valve.
Optionally, the control module is specifically configured to determine whether the current operation mode of the target temperature control system is heating operation when the deviation of the pressure value is smaller than a first preset deviation threshold, and if the current operation mode of the target temperature control system is heating operation, determine that the second control mode is the target control mode in the preset control modes, and control the opening of the electronic expansion valve according to the second control mode;
The second control mode is to control the opening of the electronic expansion valve according to the magnitude relation between the frequency and a preset frequency threshold value.
Optionally, the control module is specifically configured to determine whether the current operation mode of the target temperature control system is heating operation when the deviation of the pressure value is greater than a second preset deviation threshold, and if the current operation mode of the target temperature control system is non-heating operation, determine that the second control mode is a target control mode in the preset control modes, and control the opening of the electronic expansion valve according to the second control mode;
the second control mode is to control the opening of the electronic expansion valve according to the magnitude relation between the frequency and a preset frequency threshold value.
Optionally, the control module is specifically configured to determine whether the current operation mode of the target temperature control system is heating operation when the deviation of the pressure value is greater than a second preset deviation threshold, and if the current operation mode of the target temperature control system is heating operation, determine that a third control mode is a target control mode in the preset control modes, and control the opening of the electronic expansion valve according to the third control mode;
the third control mode is to control the opening of the electronic expansion valve according to the magnitude relation between the frequency and a preset frequency threshold.
Optionally, the control module is specifically configured to determine whether the current operation mode of the target temperature control system is heating operation when the deviation of the pressure value is smaller than a first preset deviation threshold, and if the current operation mode of the target temperature control system is non-heating operation, determine that a third control mode is a target control mode in the preset control modes, and control the opening of the electronic expansion valve according to the third control mode;
the third control mode is to control the opening of the electronic expansion valve according to the magnitude relation between the frequency and a preset frequency threshold.
The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.
It can be understood that, by adopting the technical scheme provided by the embodiment, the corresponding reference pressure value is determined through the indoor and outdoor environment parameters of the target temperature control system, so that the deviation between the reference pressure value and the current pressure value is calculated, as the pressure value deviation, the target control mode is determined according to the magnitude relation between the pressure value deviation and the preset deviation threshold value, and the opening change of the electronic expansion valve is controlled according to the opening parameter of the electronic expansion valve set in the target control mode. It can be understood that by adopting the technical scheme, the actual running pressure values of the indoor unit and the outdoor unit can be compared with the preset pressure values, so that the installation relative positions of the indoor unit and the outdoor unit are analyzed to select the control mode, the opening of the electronic expansion valve is regulated, the actual use effects of refrigeration and heating are improved, and the refrigeration and heating comfort experience of a user is improved.
Based on a general inventive concept, the embodiment of the present invention also provides a control device of an electronic expansion valve, for implementing the above method embodiment.
Fig. 3 is a schematic structural diagram of a control device for an electronic expansion valve according to an embodiment of the present invention. As shown in fig. 3, the control device of the electronic expansion valve provided in this embodiment includes a processor 31 and a memory 32, where the processor is connected to the memory:
the processor is used for calling and executing the program stored in the memory;
a memory for storing a program for executing at least the control method of the electronic expansion valve of any one of the above.
Based on one general inventive concept, the embodiment of the invention also provides an air conditioner.
The air conditioner provided by the embodiment comprises the control equipment of the electronic expansion valve.
It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to.
It should be noted that in the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "plurality" means at least two.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (14)
1. A control method of an electronic expansion valve, comprising:
acquiring indoor and outdoor environment parameters of a target temperature control system, and acquiring a reference pressure value corresponding to the indoor and outdoor environment parameters in a preset environment parameter and pressure value corresponding relation library;
determining a current pressure value, and calculating the deviation of the reference pressure value and the current pressure value as pressure value deviation;
determining a target control mode in a preset control mode according to the magnitude relation between the pressure value deviation and a preset deviation threshold value, and controlling the opening change of the electronic expansion valve according to the target control mode; wherein, each preset control mode is provided with different opening parameters of the electronic expansion valve.
2. The method of claim 1, wherein the obtaining indoor and outdoor environmental parameters of the target temperature control system comprises:
responding to a control optimization mode triggering instruction, and entering a control optimization mode; and in the control optimization mode, acquiring the indoor and outdoor environment parameters of the target temperature control system.
3. The method according to claim 1, wherein determining a target control mode in a preset control mode according to the magnitude relation between the pressure value deviation and a preset deviation threshold value, and controlling the electronic expansion valve opening change according to the target control mode comprises:
when the pressure value deviation is larger than or equal to a first preset deviation threshold value and smaller than or equal to a second preset deviation threshold value, determining a first control mode as a target control mode in a preset control mode, and controlling the opening of the electronic expansion valve according to the first control mode; the first control mode is to control the opening degree of the electronic expansion valve according to the reference opening degree parameter of the electronic expansion valve.
4. The method according to claim 1, wherein determining a target control mode in a preset control mode according to the magnitude relation between the pressure value deviation and a preset deviation threshold value, and controlling the electronic expansion valve opening change according to the target control mode comprises:
when the pressure value deviation is smaller than a first preset deviation threshold value, judging whether the current operation mode of the target temperature control system is heating operation or not, if the current operation mode of the target temperature control system is heating operation, determining a second control mode as a target control mode in a preset control mode, and controlling the opening of the electronic expansion valve according to the second control mode;
The second control mode is to control the opening of the electronic expansion valve according to the magnitude relation between the frequency and a preset frequency threshold.
5. The method of claim 4, wherein controlling the electronic expansion valve opening according to the magnitude relation between the frequency and the preset frequency threshold comprises:
in a heating operation mode, if the current frequency is smaller than a first preset frequency threshold value, controlling the opening of the electronic expansion valve to be reduced by the first threshold value, and operating for a preset time period;
if the current frequency is greater than or equal to a first preset frequency threshold value and less than or equal to a second preset frequency threshold value, controlling the opening of the electronic expansion valve to be reduced by the second threshold value, and running for a preset time period;
if the current frequency is greater than the second preset frequency threshold, controlling the opening of the electronic expansion valve to reduce a third threshold, and running for a preset time period;
wherein the first preset frequency threshold is less than the second preset frequency threshold; the first threshold is greater than the second threshold, and the second threshold is greater than the third threshold.
6. The method according to claim 1, wherein determining a target control mode in a preset control mode according to the magnitude relation between the pressure value deviation and a preset deviation threshold value, and controlling the electronic expansion valve opening change according to the target control mode comprises:
When the pressure value deviation is larger than a second preset deviation threshold value, judging whether the current operation mode of the target temperature control system is heating operation or not, if the current operation mode of the target temperature control system is non-heating operation, determining a second control mode as a target control mode in a preset control mode, and controlling the opening of the electronic expansion valve according to the second control mode;
the second control mode is to control the opening of the electronic expansion valve according to the magnitude relation between the frequency and a preset frequency threshold.
7. The method of claim 6, wherein controlling the electronic expansion valve opening according to the magnitude relation between the frequency and the preset frequency threshold comprises:
in a non-heating operation mode, if the current frequency is smaller than a first preset frequency threshold value, controlling the opening of the electronic expansion valve to increase the first threshold value, and operating for a preset time period;
if the current frequency is greater than or equal to a first preset frequency threshold value and less than or equal to a second preset frequency threshold value, controlling the opening of the electronic expansion valve to increase the second threshold value, and running for a preset time period;
if the current frequency is greater than the second preset frequency threshold, controlling the opening of the electronic expansion valve to increase a third threshold, and running for a preset time period;
Wherein the first preset frequency threshold is less than the second preset frequency threshold; the first threshold is greater than the second threshold, and the second threshold is greater than the third threshold.
8. The method according to claim 1, wherein determining a target control mode in a preset control mode according to the magnitude relation between the pressure value deviation and a preset deviation threshold value, and controlling the electronic expansion valve opening change according to the target control mode comprises:
when the pressure value deviation is larger than a second preset deviation threshold value, judging whether the current operation mode of the target temperature control system is heating operation or not, if the current operation mode of the target temperature control system is heating operation, determining a third control mode as a target control mode in preset control modes, and controlling the opening of the electronic expansion valve according to the third control mode;
the third control mode is to control the opening of the electronic expansion valve according to the magnitude relation between the frequency and a preset frequency threshold.
9. The method of claim 8, wherein controlling the electronic expansion valve opening according to the magnitude relation between the frequency and the preset frequency threshold comprises:
In a heating operation mode, if the current frequency is smaller than a first preset frequency threshold value, controlling the opening of the electronic expansion valve to increase the first threshold value, and operating for a preset time period;
if the current frequency is greater than or equal to a first preset frequency threshold value and less than or equal to a second preset frequency threshold value, controlling the opening of the electronic expansion valve to increase the second threshold value, and running for a preset time period;
if the current frequency is greater than the second preset frequency threshold, controlling the opening of the electronic expansion valve to increase a third threshold, and running for a preset time period;
wherein the first preset frequency threshold is less than the second preset frequency threshold; the first threshold is greater than the second threshold, and the second threshold is greater than the third threshold.
10. The method according to claim 1, wherein determining a target control mode in a preset control mode according to the magnitude relation between the pressure value deviation and a preset deviation threshold value, and controlling the electronic expansion valve opening change according to the target control mode comprises:
when the pressure value deviation is smaller than a first preset deviation threshold value, judging whether the current operation mode of the target temperature control system is heating operation or not, if the current operation mode of the target temperature control system is non-heating operation, determining a third control mode as a target control mode in a preset control mode, and controlling the opening of the electronic expansion valve according to the third control mode;
The third control mode is to control the opening of the electronic expansion valve according to the magnitude relation between the frequency and a preset frequency threshold.
11. The method of claim 10, wherein controlling the electronic expansion valve opening according to the magnitude relation between the frequency and the preset frequency threshold comprises:
in a non-heating operation mode, if the current frequency is smaller than a first preset frequency threshold value, controlling the opening of the electronic expansion valve to be reduced by the first threshold value, and operating for a preset time period;
if the current frequency is greater than or equal to a first preset frequency threshold value and less than or equal to a second preset frequency threshold value, controlling the opening of the electronic expansion valve to be reduced by the second threshold value, and running for a preset time period;
if the current frequency is greater than the second preset frequency threshold, controlling the opening of the electronic expansion valve to reduce a third threshold, and running for a preset time period;
wherein the first preset frequency threshold is less than the second preset frequency threshold; the first threshold is greater than the second threshold, and the second threshold is greater than the third threshold.
12. A control device of an electronic expansion valve, characterized by comprising:
the acquisition module is used for acquiring indoor and outdoor environment parameters of the target temperature control system and acquiring a reference pressure value corresponding to the indoor and outdoor environment parameters in a preset environment parameter and pressure value corresponding relation library;
The calculation module is used for determining a current pressure value and calculating the deviation between the reference pressure value and the current pressure value as a pressure value deviation;
the control module is used for determining a target control mode in a preset control mode according to the magnitude relation between the pressure value deviation and a preset deviation threshold value, and controlling the opening change of the electronic expansion valve according to the target control mode; wherein, each preset control mode is provided with different opening parameters of the electronic expansion valve.
13. A control device of an electronic expansion valve, comprising a processor and a memory, wherein the processor is connected with the memory:
the processor is used for calling and executing the program stored in the memory;
the memory for storing the program at least for executing the control method of the electronic expansion valve according to any one of claims 1 to 11.
14. An air conditioner characterized by comprising the control apparatus of the electronic expansion valve of claim 13.
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| CN202310925998.5A CN117073194A (en) | 2023-07-26 | 2023-07-26 | Electronic valve control method and device and related equipment |
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| CN202310925998.5A CN117073194A (en) | 2023-07-26 | 2023-07-26 | Electronic valve control method and device and related equipment |
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