CN114992823B - Four-way valve reversing adjustment method and device and air conditioning system - Google Patents
Four-way valve reversing adjustment method and device and air conditioning system Download PDFInfo
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- CN114992823B CN114992823B CN202210746443.XA CN202210746443A CN114992823B CN 114992823 B CN114992823 B CN 114992823B CN 202210746443 A CN202210746443 A CN 202210746443A CN 114992823 B CN114992823 B CN 114992823B
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- way valve
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 45
- 238000012544 monitoring process Methods 0.000 claims abstract description 17
- 230000001276 controlling effect Effects 0.000 claims description 41
- 239000007788 liquid Substances 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000001816 cooling Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 230000003750 conditioning effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 1
- 230000002035 prolonged effect 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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- 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
- 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
- F24F11/67—Switching between heating and cooling modes
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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
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/10—Pressure
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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 application discloses a four-way valve reversing regulation method, a four-way valve reversing regulation device and an air conditioning system, wherein the regulation method comprises the steps of monitoring a heating start signal of an air conditioning unit in real time; when a heating start signal is detected, controlling the opening of the electronic expansion valve to be in an opening preset range; when the opening of the electronic expansion valve is in the opening preset range for a preset time, controlling the starting of the compressor, and sending a four-way valve reversing instruction; and after the compressor is started for a preset time, controlling the opening of the electronic expansion valve to be reduced to the minimum at a preset speed so as to finish reversing of the four-way valve. The application can lead the piston to slowly slide to finish reversing, and the piston can not impact the valve body in the process, thereby effectively ensuring the service life of the four-way valve connecting pipeline.
Description
Technical Field
The application relates to the technical field of air conditioning systems, in particular to a four-way valve reversing adjustment method and device and an air conditioning system.
Background
The four-way valve is used as an important component of the air conditioner, plays a role in controlling the switching between the refrigerating and heating modes of the air conditioner, and has the following working principle:
when the air conditioner is in a refrigerating state, the four-way valve is not electrified, the four-way valve is in a state of A, D ports communicated and B, C ports communicated, a refrigerant is compressed by a compressor and converted into high-temperature and high-pressure gas, the gas is discharged from a port D through a port A of the four-way valve, enters an outdoor heat exchanger (condenser), becomes medium-temperature and high-pressure liquid after the condenser absorbs and releases heat, becomes low-temperature and low-pressure liquid after passing through an expansion valve, becomes low-temperature and low-pressure gas after the indoor heat exchanger (evaporator) absorbs and releases heat, returns to the compressor through a port B of the four-way valve, and then continues to circulate. When the air conditioner is in a heating state, the four-way valve is electrified, the piston moves rightwards, the A, B port is communicated, the C, D port is communicated, the refrigerant is compressed by the compressor and converted into high-temperature high-pressure gas, the high-pressure gas is discharged from the B port through the A port of the four-way valve, enters the indoor heat exchanger (condenser), becomes medium-temperature high-pressure liquid after the condenser absorbs and releases heat, becomes low-temperature low-pressure liquid after passing through the expansion valve, becomes low-temperature low-pressure gas after the outdoor heat exchanger (evaporator) absorbs and releases heat, returns to the compressor through the D port of the four-way valve, and then continues to circulate.
When the air conditioner is started up, the piston 4 of the four-way valve can slide rightwards under the action of pressure, and the piston 4 can impact the right valve wall due to the fact that the pressure difference between the right cavity 2 and the left cavity 3 of the four-way valve is large, so that the pipeline severely vibrates, and the service life of the connecting pipeline of the four-way valve is seriously influenced. How to provide a reversing adjustment method can ensure the service life of a four-way valve connecting pipeline is a problem which needs to be solved.
Disclosure of Invention
The application aims to provide a four-way valve reversing adjustment method and device and an air conditioning system, and aims to solve the problem of low service life of a four-way valve connecting pipeline in the prior art.
In order to achieve the above purpose, the application is realized by adopting the following technical scheme:
the four-way valve reversing regulation method is used for controlling the four-way valve to reverse when the air conditioner unit is switched from a refrigerating mode to a heating mode or the heating mode is started; the air conditioning unit comprises a four-way valve, an A port and a C port of the four-way valve are respectively communicated with a high-pressure pipeline and a low-pressure pipeline of a compressor, a gas-liquid separator is arranged on the low-pressure pipeline of the compressor, and an electronic expansion valve is connected between the high-pressure pipeline and the low-pressure pipeline of the compressor; an evaporator and a condenser are sequentially arranged between the port B and the port D of the four-way valve;
comprising the following steps:
monitoring a heating start signal of the air conditioning unit in real time;
when the heating start signal is detected, controlling the opening of the electronic expansion valve to be in an opening preset range;
when the opening of the electronic expansion valve is in the opening preset range for a preset time, controlling the compressor to start, and sending a four-way valve reversing instruction;
and after the compressor is started for a preset time, controlling the opening of the electronic expansion valve to be reduced to the minimum at a preset speed so as to finish reversing of the four-way valve.
Further, the controlling the opening of the electronic expansion valve to be in the opening preset range includes:
when a heating start signal of the air conditioning unit is received, a first control instruction of the opening degree of the electronic expansion valve is sent; the first control instruction of the opening degree of the electronic expansion valve is used for controlling the opening degree of the electronic expansion valve to be between ninety percent of the maximum opening degree of the electronic expansion valve and the maximum opening degree.
Further, the controlling the compressor to start includes:
when the opening of the electronic expansion valve is in the opening preset range for 1.5-2.5s, sending a compressor starting instruction;
the compressor start command is used for controlling the start of the compressor.
Further, the controlling the opening of the electronic expansion valve to be reduced to the minimum at a preset rate to complete the reversing of the four-way valve includes:
after the compressor is started for 4-6s, sending a second control instruction of the opening of the electronic expansion valve;
and the second control instruction of the opening of the electronic expansion valve is used for controlling the opening of the electronic expansion valve to be reduced to the minimum at the speed of 15-25P/s so as to finish reversing of the four-way valve.
Further, a second electronic expansion valve is also connected between the evaporator and the condenser.
The application also discloses a four-way valve reversing regulating device which is used for controlling the four-way valve to reverse when the air conditioner unit is switched from a refrigerating mode to a heating mode or when the heating mode is started; the air conditioning unit comprises a four-way valve, an A port and a C port of the four-way valve are respectively communicated with a high-pressure pipeline and a low-pressure pipeline of a compressor, a gas-liquid separator is arranged on the low-pressure pipeline of the compressor, and an electronic expansion valve is connected between the high-pressure pipeline and the low-pressure pipeline of the compressor; an evaporator and a condenser are sequentially arranged between the port B and the port D of the four-way valve;
comprising the following steps:
and a monitoring module: the heating start signal is used for monitoring the air conditioning unit in real time;
the control module is in signal connection with the monitoring module and is used for controlling the opening of the electronic expansion valve to be in an opening preset range when the heating starting signal is detected; and
when the opening of the electronic expansion valve is in the opening preset range for a preset time, controlling the compressor to start, and sending a four-way valve reversing instruction; and
and after the compressor is started for a preset time, controlling the opening of the electronic expansion valve to be reduced to the minimum at a preset speed so as to finish reversing of the four-way valve.
Further, when the control module receives a heating start signal of the air conditioning unit, a first opening control instruction of the electronic expansion valve is sent; the first opening control instruction of the electronic expansion valve is used for controlling the opening of the electronic expansion valve to be between ninety percent of the maximum opening of the electronic expansion valve and the maximum opening.
Further, the control module is used for sending a compressor starting instruction after the opening of the electronic expansion valve is in the opening preset range of 1.5-2.5 s; the compressor start command is used for controlling the start of the compressor.
Further, the control module is used for sending a second control instruction of the opening degree of the electronic expansion valve after the compressor is started for 4-6 s;
and the second control instruction of the opening of the electronic expansion valve is used for controlling the opening of the electronic expansion valve to be reduced to the minimum at the speed of 15-25P/s so as to finish the reversing of the four-way valve.
The application also discloses an air conditioning system, which comprises the four-way valve reversing regulating device.
According to the technical scheme, the embodiment of the application has at least the following effects: according to the reversing regulation method and device, the electronic expansion valve is connected between the high-pressure pipeline and the low-pressure pipeline, the opening of the electronic expansion valve is regulated when a heating start signal of an air conditioning unit is detected, the compressor is controlled to start after a period of time, and the opening of the electronic expansion valve is controlled to be gradually closed after the compressor runs for a period of time; when the compressor is just started, the pressure difference at two ends of the compressor is very small due to the opening of the electronic expansion valve, so that no enough pressure difference exists between the right cavity and the left cavity of the four-way valve to push the piston to slide, when the compressor runs for a period, the pressure difference at two ends of the compressor is gradually increased in the closing process of the electronic expansion valve, the pressure difference between the right cavity and the left cavity of the four-way valve is gradually increased, and finally the pressure difference capable of moving the piston is finally reached, at the moment, the pressure difference between the right cavity and the left cavity of the four-way valve only pushes the piston, the piston slowly slides rightwards to finish reversing, the piston does not impact the valve body in the process, and the service life of a connecting pipeline of the four-way valve is effectively ensured.
Drawings
FIG. 1 is a schematic diagram of an air conditioner in a cooling mode according to the background art;
FIG. 2 is a schematic diagram of an air conditioner in a heating mode according to the background art;
FIG. 3 is a flow chart of the conditioning method of the present application;
fig. 4 is a schematic diagram of connection of an air conditioning unit in the conditioning method of the present application.
Wherein: 11. a compressor; 12. a four-way valve; 13. a condenser; 14. an evaporator; 15. an electronic expansion valve; 16. a gas-liquid separator; 17. a second electronic expansion valve; 111. a high pressure line; 112. a low pressure line; 2. a right side cavity; 3. a left side cavity; 4. and (3) a piston.
Detailed Description
The application is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the application easy to understand.
It should be noted that, in the description of the present application, the directions or positional relationships indicated by the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and do not require that the present application must be constructed and operated in a specific direction, and thus should not be construed as limiting the present application. The terms "front", "back", "left", "right", "upper", "lower" as used in the description of the present application refer to directions in the drawings, and the terms "inner", "outer" refer to directions toward or away from the geometric center of a particular component, respectively.
As shown in fig. 1 to 4, a four-way valve reversing adjustment method is used for controlling the four-way valve to reverse when an air conditioning unit is switched from a cooling mode to a heating mode or when the heating mode is started; the air conditioning unit comprises a four-way valve 12, wherein an A port and a C port of the four-way valve 12 are respectively communicated with a high-pressure pipeline 111 and a low-pressure pipeline 112 of a compressor 11, a gas-liquid separator 16 is arranged on the low-pressure pipeline 12 of the compressor 11, and an electronic expansion valve 15 is connected between the high-pressure pipeline 111 and the low-pressure pipeline 112 of the compressor 11; an evaporator 13 and a condenser 14 are sequentially arranged between the port B and the port D of the four-way valve 12;
the adjusting method comprises the following steps:
and 10, monitoring a heating start signal of the air conditioning unit in real time.
The air conditioning unit has a cooling mode and a heating mode, and as shown in fig. 1 and 2, when the air conditioner is in a cooling state, the four-way valve is not electrified, and the four-way valve is in a state of A, D ports being communicated and B, C ports being communicated. When the air conditioner is in a heating state, the four-way valve is electrified, and the piston moves rightwards, so that the A, B ports are communicated, and the C, D ports are communicated. Therefore, the mode switching of the air conditioning unit is realized through the reversing of the four-way valve. When the air conditioning unit is switched from cooling to heating, the four-way valve is impacted by the rapid movement of the piston. There is also a problem of striking the four-way valve when the heating mode is turned on. When the refrigerating mode is switched to the heating mode or the heating mode is independently started, the heating mode is realized by starting the heating starting signal, so that the application can ensure the convenience and accuracy of subsequent adjustment through monitoring the heating starting signal.
And step 20, when the heating start signal is detected, controlling the opening of the electronic expansion valve 15 to be in the opening preset range.
Since the compressor 11 is operated for a while when switching between the cooling mode and the heating mode, if the position of the piston 4 in the four-way valve 12 is suddenly switched, the piston will impact the valve wall, causing vibration of the four-way valve 12, and seriously affecting the service life of the four-way valve connecting pipeline. Therefore, in this step, effective monitoring of switching of the cooling mode to the heating mode can be achieved by monitoring the heating start signal.
The heating start signal is detected, and the opening of the electronic expansion valve 15 is controlled to be between ninety percent of the maximum opening of the electronic expansion valve and the maximum opening, and the "between" in this step includes two end points. Further, the opening degree of the electronic expansion valve is controlled to be at the maximum opening degree, and the high-pressure pipe 111 and the low-pressure pipe 112 of the compressor 11 can be communicated with each other in the maximum passage.
And step 30, controlling the start of the compressor 11 and sending a four-way valve reversing instruction after the opening of the electronic expansion valve 15 is in the opening preset range for a preset time.
When the opening of the electronic expansion valve 15 is at the maximum opening of 1.5-2.5s, sending a starting instruction of the compressor 11; the compressor start command is used to control the start of the compressor 11. Since the electronic expansion valve 15 is started to connect the high-pressure line 111 and the low-pressure line 112, the high-pressure refrigerant bypasses the electronic expansion valve 15 to the gas-liquid separator 16, and a large pressure difference is not generated across the compressor, so that the piston 4 of the four-way valve 12 cannot slide.
Step 40, after the compressor 11 is started for a preset time, controlling the opening of the electronic expansion valve 15 to be reduced to the minimum at a preset rate so as to complete the reversing of the four-way valve.
After the compressor 11 is started for 4-6s, sending a second control instruction of the opening of the electronic expansion valve; and the second control instruction of the opening of the electronic expansion valve is used for controlling the opening of the electronic expansion valve to be reduced to the minimum at the speed of 15-25P/s so as to finish the reversing of the four-way valve.
When the compressor 11 operates for a certain period of time, the opening degree of the electronic expansion valve is gradually reduced to gradually increase the pressure difference between the high pressure pipeline 111 and the low pressure pipeline 112 from 0, and the pressure difference pushing the piston 4 of the four-way valve 12 to move is reached in the process of increasing the pressure difference between the high pressure pipeline 111 and the low pressure pipeline 112. At this time, the piston 4 of the four-way valve 12 moves to complete the reversing of the four-way valve.
The pressure difference between the high-pressure pipeline 111 and the low-pressure pipeline 112 of the compressor is controlled to be gradually increased from 0, so that the piston 4 is pushed to move slowly, the piston 4 of the four-way valve 12 is prevented from impacting the valve body of the four-way valve, the four-way valve connecting pipeline is further protected, and the service life of the air conditioning pipeline is prolonged.
In some embodiments, a second electronic expansion valve 17 is also provided between the evaporator 14 and the condenser 13.
The present application is designed to bypass from exhaust to intake, and the bypass flow rate is controlled by the electronic expansion valve 15. The pressure regulating effect is good, the range is wide, and the device is not only applicable to variable frequency compressors, but also applicable to fixed frequency. After the four-way valve is switched, the electronic expansion valve is not involved in other control, and the electronic expansion valve is directly closed, so that the system can reach a steady state more quickly.
The application also discloses a four-way valve reversing regulating device which is used for controlling the four-way valve to reverse when the air conditioner unit is switched from a refrigerating mode to a heating mode or a heating starting signal is started; the air conditioning unit comprises a four-way valve 12, wherein an A port and a C port of the four-way valve 12 are respectively communicated with a high-pressure pipeline 111 and a low-pressure pipeline 112 of a compressor 11, a gas-liquid separator 16 is arranged on the low-pressure pipeline 12 of the compressor 11, and an electronic expansion valve 15 is connected between the high-pressure pipeline 111 and the low-pressure pipeline 112 of the compressor 11; an evaporator 13 and a condenser 14 are sequentially arranged between the port B and the port D of the four-way valve 12; the system also comprises a monitoring module and a control module connected with the monitoring module through signals. The monitoring module is used for monitoring a heating start signal of the air conditioning unit in real time. The control module is used for controlling the opening of the electronic expansion valve 15 to be in an opening preset range when the heating start signal is detected; and when the opening of the electronic expansion valve 15 is in the opening preset range for a preset time, controlling the starting of the compressor 11, and sending a four-way valve reversing instruction; and controlling the opening of the electronic expansion valve 15 to be reduced to the minimum at a preset rate after the compressor 11 is started for a preset time, so as to complete the reversing of the four-way valve.
The application also discloses an air conditioning system which comprises the four-way valve reversing adjusting device.
It will be appreciated by those skilled in the art that the present application can be carried out in other embodiments without departing from the spirit or essential characteristics thereof. Accordingly, the above disclosed embodiments are illustrative in all respects, and not exclusive. All changes that come within the scope of the application or equivalents thereto are intended to be embraced therein.
Claims (8)
1. The four-way valve reversing regulation method is characterized by being used for controlling the four-way valve to reverse when the air conditioning unit is switched from a refrigerating mode to a heating mode or the heating mode is started; the air conditioning unit comprises a four-way valve, an A port and a C port of the four-way valve are respectively communicated with a high-pressure pipeline and a low-pressure pipeline of a compressor, a gas-liquid separator is arranged on the low-pressure pipeline of the compressor, an electronic expansion valve is connected between the high-pressure pipeline and the low-pressure pipeline of the compressor, and the connecting ends of the electronic expansion valve and the low-pressure pipeline are positioned between the gas-liquid separator and the C port of the four-way valve; an evaporator and a condenser are sequentially arranged between the port B and the port D of the four-way valve;
comprising the following steps: monitoring a heating start signal of the air conditioning unit in real time;
when the heating start signal is detected, controlling the opening of the electronic expansion valve to be between ninety percent of the maximum opening of the electronic expansion valve and the maximum opening;
when the opening of the electronic expansion valve is in the preset time of the opening preset range, controlling the compressor to start, and sending a four-way valve reversing instruction;
and after the compressor is started for a preset time, controlling the opening of the electronic expansion valve to be reduced to the minimum at a preset speed so as to finish reversing of the four-way valve.
2. The four-way valve commutation adjustment method of claim 1, wherein the controlling the compressor start comprises:
when the opening of the electronic expansion valve is in the opening preset range for 1.5-2.5s, sending a compressor starting instruction;
the compressor start command is used for controlling the start of the compressor.
3. The four-way valve reversing adjustment method according to claim 1, wherein controlling the opening of the electronic expansion valve to be reduced to a minimum at a preset rate to complete the reversing of the four-way valve comprises:
after the compressor is started for 4-6s, sending a second control instruction of the opening of the electronic expansion valve;
and the second control instruction of the opening of the electronic expansion valve is used for controlling the opening of the electronic expansion valve to be reduced to the minimum at the speed of 15-25P/s so as to finish reversing of the four-way valve.
4. The method of reversing regulation of a four-way valve according to claim 1, wherein a second electronic expansion valve is further connected between the evaporator and the condenser.
5. The four-way valve reversing regulating device is characterized by being used for controlling the four-way valve to reverse when an air conditioning unit is switched from a refrigerating mode to a heating mode or the heating mode is started; the air conditioning unit comprises a four-way valve, an A port and a C port of the four-way valve are respectively communicated with a high-pressure pipeline and a low-pressure pipeline of a compressor, a gas-liquid separator is arranged on the low-pressure pipeline of the compressor, an electronic expansion valve is connected between the high-pressure pipeline and the low-pressure pipeline of the compressor, and the connecting ends of the electronic expansion valve and the low-pressure pipeline are positioned between the gas-liquid separator and the C port of the four-way valve; an evaporator and a condenser are sequentially arranged between the port B and the port D of the four-way valve;
comprising the following steps:
and a monitoring module: the heating start signal is used for monitoring the air conditioning unit in real time;
the control module is in signal connection with the monitoring module and is used for controlling the opening of the electronic expansion valve to be between ninety percent and the maximum opening of the electronic expansion valve when the heating starting signal is detected; and
when the opening of the electronic expansion valve is in the preset time of the opening preset range, controlling the compressor to start, and sending a four-way valve reversing instruction; and
and after the compressor is started for a preset time, controlling the opening of the electronic expansion valve to be reduced to the minimum at a preset speed so as to finish reversing of the four-way valve.
6. The four-way valve reversing regulating device according to claim 5, wherein the control module is configured to send a compressor start command when the opening of the electronic expansion valve is within a preset opening range of 1.5-2.5 s; the compressor start command is used for controlling the start of the compressor.
7. The four-way valve reversing regulating device according to claim 5, wherein the control module is used for sending a second control instruction of the opening degree of the electronic expansion valve after the compressor is started for 4-6 s;
and the second control instruction of the opening of the electronic expansion valve is used for controlling the opening of the electronic expansion valve to be reduced to the minimum at the speed of 15-25P/s so as to finish the reversing of the four-way valve.
8. An air conditioning system comprising the four-way valve reversing adjustment device according to any one of claims 5 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210746443.XA CN114992823B (en) | 2022-06-29 | 2022-06-29 | Four-way valve reversing adjustment method and device and air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62280535A (en) * | 1986-05-30 | 1987-12-05 | Toshiba Corp | Air conditioner |
| CN101839527A (en) * | 2010-05-24 | 2010-09-22 | 广东格兰仕集团有限公司 | Unitary air conditioner and operation method thereof |
| CN102062492A (en) * | 2009-11-13 | 2011-05-18 | Lg电子株式会社 | Air conditioner |
| CN103791569A (en) * | 2012-10-30 | 2014-05-14 | 珠海格力电器股份有限公司 | Heat pump air-conditioning system |
| CN108870701A (en) * | 2018-08-22 | 2018-11-23 | 宁波奥克斯电气股份有限公司 | A kind of multi-online air-conditioning system and pressure detection method |
| CN111207501A (en) * | 2020-01-16 | 2020-05-29 | 广东美的暖通设备有限公司 | Air conditioner control method and system and air conditioner |
| CN113237208A (en) * | 2021-05-25 | 2021-08-10 | 青岛海尔空调电子有限公司 | Heat pump air conditioning unit and control method for abnormal reversing of four-way valve of heat pump air conditioning unit |
-
2022
- 2022-06-29 CN CN202210746443.XA patent/CN114992823B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62280535A (en) * | 1986-05-30 | 1987-12-05 | Toshiba Corp | Air conditioner |
| CN102062492A (en) * | 2009-11-13 | 2011-05-18 | Lg电子株式会社 | Air conditioner |
| CN101839527A (en) * | 2010-05-24 | 2010-09-22 | 广东格兰仕集团有限公司 | Unitary air conditioner and operation method thereof |
| CN103791569A (en) * | 2012-10-30 | 2014-05-14 | 珠海格力电器股份有限公司 | Heat pump air-conditioning system |
| CN108870701A (en) * | 2018-08-22 | 2018-11-23 | 宁波奥克斯电气股份有限公司 | A kind of multi-online air-conditioning system and pressure detection method |
| CN111207501A (en) * | 2020-01-16 | 2020-05-29 | 广东美的暖通设备有限公司 | Air conditioner control method and system and air conditioner |
| CN113237208A (en) * | 2021-05-25 | 2021-08-10 | 青岛海尔空调电子有限公司 | Heat pump air conditioning unit and control method for abnormal reversing of four-way valve of heat pump air conditioning unit |
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| CN114992823A (en) | 2022-09-02 |
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