CN113970126A - Air conditioner, control method of air conditioner and storage medium - Google Patents

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

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Publication number
CN113970126A
CN113970126A CN202010648939.4A CN202010648939A CN113970126A CN 113970126 A CN113970126 A CN 113970126A CN 202010648939 A CN202010648939 A CN 202010648939A CN 113970126 A CN113970126 A CN 113970126A
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China
Prior art keywords
air conditioner
compressor
heat exchanger
gas
liquid separator
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CN202010648939.4A
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Chinese (zh)
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CN113970126B (en
Inventor
李杏党
陈可兄
张�浩
侯泽飞
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GD Midea Air Conditioning Equipment Co Ltd
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GD Midea Air Conditioning Equipment Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—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
    • F24F11/67—Switching between heating and cooling modes
    • 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
    • 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
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/23—Separators
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2106—Temperatures of fresh outdoor air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2115—Temperatures of a compressor or the drive means therefor
    • F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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

Abstract

The invention discloses an air conditioner, which comprises a compressor, a four-way valve, a first outdoor heat exchanger, a second outdoor heat exchanger, a throttling component, an indoor heat exchanger and a gas-liquid separator, wherein the compressor is connected with the four-way valve; the gas-liquid separator comprises a first interface, a second interface and a third interface, wherein the first interface of the gas-liquid separator is connected with the compressor through the first outdoor heat exchanger and the four-way valve in sequence, and the second interface of the gas-liquid separator is connected with the indoor heat exchanger through the second outdoor heat exchanger and the throttling component in sequence; and the third interface is connected with the compressor through the throttling component and the indoor heat exchanger in sequence. The invention also discloses a control method of the air conditioner and a computer readable storage medium, and the effect of reducing the energy consumption of the air conditioner is achieved.

Description

Air conditioner, control method of air conditioner and storage medium
Technical Field
The present invention relates to the field of air conditioners, and in particular, to an air conditioner, a control method of the air conditioner, and a computer-readable storage medium.
Background
With the improvement of production efficiency and the improvement of production technology, air conditioners are popularized and become important household appliances which are indispensable in life of people.
The conventional air conditioner can only circulate the refrigeration in two phases based on the same circulation line, but when the air conditioner operates in a refrigerating mode, the gas-phase refrigerant at the inlet of the evaporator does not have the refrigerating capacity, and the flow resistance of the refrigerant of a refrigerating system is increased. This results in a disadvantage of large power consumption of the air conditioner.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The present invention provides an air conditioner, a control method of the air conditioner and a computer readable storage medium, which aims to achieve the effect of reducing the energy consumption of the air conditioner.
To achieve the above object, the present invention provides an air conditioner including: the system comprises a compressor, a four-way valve, a first outdoor heat exchanger, a second outdoor heat exchanger, a throttling component, an indoor heat exchanger and a gas-liquid separator; the gas-liquid separator comprises a first interface, a second interface and a third interface, wherein the first interface of the gas-liquid separator is connected with the compressor through the first outdoor heat exchanger and the four-way valve in sequence, and the second interface of the gas-liquid separator is connected with the indoor heat exchanger through the second outdoor heat exchanger and the throttling component in sequence; and the third interface is connected with the compressor through the throttling component and the indoor heat exchanger in sequence.
Optionally, the air conditioner further includes a three-way valve, a first end of the three-way valve is connected to the third interface, a second end of the three-way valve is connected to the compressor through the four-way valve, and a third end of the three-way valve is connected to the indoor heat exchanger through the throttling component; the three-way valve is set to selectively conduct the first end and the second end or the first end and the third end.
Optionally, the gas-liquid separator further comprises a fourth interface, the fourth interface is connected with the compressor, and a solenoid valve is arranged between the fourth interface and the compressor.
Optionally, the compressor is configured as an enhanced vapor injection compressor, and the fourth port is connected to a vapor injection port of the enhanced vapor injection compressor.
In addition, in order to achieve the above object, the present invention provides a method for controlling an air conditioner, which is applied to the air conditioner, the method for controlling the air conditioner including:
acquiring operating parameters of an air conditioner;
and when the operating parameters meet the system protection conditions, controlling the electromagnetic valve to be opened so as to enable the refrigerant in the gas-liquid separator to flow back to the compressor.
Optionally, the operating parameter comprises an operating mode, and one of a compressor frequency and a discharge temperature, and the system protection condition comprises:
in the refrigeration mode, the exhaust temperature is greater than a preset exhaust temperature; or
In the heating mode, the frequency of the compressor is greater than a preset frequency.
Optionally, system protection conditions
The system protection conditions further include:
in the heating mode, the outdoor environment temperature is less than or equal to a preset temperature, and the frequency of the compressor is greater than a preset frequency.
Optionally, the operating parameter further includes an opening value of a throttling component, and the system protection condition includes:
in the refrigeration mode, the opening value is greater than or equal to a preset opening value, and the exhaust temperature is greater than a preset exhaust temperature; or
In the heating mode, the opening value is greater than or equal to a preset opening value, and the frequency of the compressor is greater than a preset frequency
Optionally, the compressor of the air conditioner is set as an enhanced vapor injection compressor, and the system protection condition includes:
the air conditioner runs in a heating mode, and the frequency of the compressor is greater than the preset frequency.
Further, to achieve the above object, the present invention also provides a computer-readable storage medium having stored thereon a control program of an air conditioner, which when executed by a processor, implements the steps of the control method of the air conditioner as described above.
The embodiment of the invention provides an air conditioner, a control method of the air conditioner and a computer readable storage medium, wherein the air conditioner comprises a compressor, a four-way valve, a first outdoor heat exchanger, a second outdoor heat exchanger, a throttling component, an indoor heat exchanger and a gas-liquid separator; the gas-liquid separator comprises a first interface, a second interface and a third interface, wherein the first interface of the gas-liquid separator is connected with the compressor through the first outdoor heat exchanger and the four-way valve in sequence, and the second interface of the gas-liquid separator is connected with the indoor heat exchanger through the second outdoor heat exchanger and the throttling component in sequence; and the third interface is connected with the compressor through the throttling component and the indoor heat exchanger in sequence. The air conditioner is provided with the gas-liquid separator, so that residual gas-phase refrigerant and liquid-phase refrigerant generated by insufficient heat exchange of the first outdoor heat exchanger can be separated, and the residual gas-phase refrigerant is subjected to further heat exchange through the second outdoor heat exchanger and changed into liquid-phase refrigerant to flow into the indoor heat exchanger. Thereby avoiding the phenomenon that gas-phase refrigerant without refrigeration capacity enters the indoor heat exchanger, and reducing the flow resistance of the refrigerant of the refrigeration cycle system. Therefore, the effect of improving the system stability of the air conditioner is achieved while the power consumption of the air conditioner is reduced. .
Drawings
Fig. 1 is a schematic view of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic view of an air conditioner according to another embodiment of the present invention;
fig. 3 is a schematic view of an air conditioner according to still another embodiment of the present invention;
fig. 4 is a schematic diagram of a terminal structure of a hardware operating environment according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention.
The reference numbers illustrate:
Figure BDA0002573613150000031
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The conventional air conditioner can only circulate the refrigeration in two phases based on the same circulation line, but when the air conditioner operates in a refrigerating mode, the gas-phase refrigerant at the inlet of the evaporator does not have the refrigerating capacity, and the flow resistance of the refrigerant of a refrigerating system is increased. This results in a disadvantage of large power consumption of the air conditioner.
In order to solve the defects of the traditional air conditioner, the invention provides the air conditioner which comprises a compressor, a four-way valve, a first outdoor heat exchanger, a second outdoor heat exchanger, a throttling part, an indoor heat exchanger and a gas-liquid separator, wherein the four-way valve is arranged on the compressor; the gas-liquid separator comprises a first interface, a second interface and a third interface, wherein the first interface of the gas-liquid separator is connected with the compressor through the first outdoor heat exchanger and the four-way valve in sequence, and the second interface of the gas-liquid separator is connected with the indoor heat exchanger through the second outdoor heat exchanger and the throttling component in sequence; the third interface is connected with the compressor through the indoor heat exchanger.
In order to make those skilled in the art understand the protection scope of the present invention, the following description is made with reference to the accompanying drawings.
Referring to fig. 1, as one implementation, the air conditioner includes a compressor 10, a four-way valve 20, a first outdoor heat exchanger 30, a second outdoor heat exchanger 40, a throttling part 50, an indoor heat exchanger 60, and a gas-liquid separator 70. The gas-liquid separator 70 includes a first interface, a second interface and a third interface, wherein the first interface of the gas-liquid separator 70 is connected to the compressor 10 through the first outdoor heat exchanger 30 and the four-way valve 20 in sequence, and the second interface of the gas-liquid separator 70 is connected to the indoor heat exchanger 60 through the second outdoor heat exchanger 40 and the throttling component 50 in sequence; the third port is connected to the compressor 10 through the throttle unit 50 and the indoor heat exchanger 60 in sequence.
It can be understood that, when the air conditioner operates in the cooling mode, the refrigerant circulation direction is the first circulation direction as shown in fig. 1, the high-temperature refrigerant gas discharged from the discharge port of the compressor 10 flows into the first outdoor heat exchanger 30 after passing through the four-way valve 20, and after the high-temperature refrigerant gas exchanges heat with the first outdoor heat exchanger 30, a part of the gas-phase refrigerant is changed into a liquid-phase refrigerant, resulting in a two-phase refrigerant flowing out of the first outdoor heat exchanger 30. The two-phase refrigerant enters the gas-liquid separator 70 through a first port of the gas-liquid separator 70.
After the refrigerant in the two-phase state enters the gas-liquid separator 70, the gas-liquid separator 70 performs gas-liquid separation on the refrigerant in the two-phase state, and controls the separated gas-phase refrigerant to flow into the second outdoor heat exchanger 40 from the second port of the gas-liquid separator, so that the separated gas-phase refrigerant is further subjected to heat exchange by the second outdoor heat exchanger 40, becomes a liquid refrigerant, and then flows into the indoor heat exchanger 60. The liquid refrigerant separated by the gas-liquid separator 70 flows out of the third port, passes through the throttling part 50, and then directly flows into the indoor heat exchanger 60.
Since the air conditioner is provided with the gas-liquid separator 70, the residual gas-phase refrigerant generated due to insufficient heat exchange in the first outdoor heat exchanger 30 can be separated from the liquid-phase refrigerant, and the residual gas-phase refrigerant is further heat exchanged by the second outdoor heat exchanger 40 to be changed into the liquid-phase refrigerant and flows into the indoor heat exchanger 60. Thereby preventing a gas-phase refrigerant having no refrigerating capacity from entering the indoor heat exchanger 60, and reducing the flow resistance of the refrigerant of the refrigerating cycle system. Therefore, the effect of improving the system stability of the air conditioner is achieved while the power consumption of the air conditioner is reduced.
Optionally, referring to fig. 2, as another implementation manner, the air conditioner further includes a three-way valve 80, and the three-way valve 80 includes a first end, a second end, and a third end. A first end of the three-way valve is connected to the third port of the gas-liquid separator 70, a second end of the three-way valve 80 is connected to the compressor 10 via the four-way valve 20, and a third end of the three-way valve 80 is connected to the indoor heat exchanger 60 via the throttling part 50.
It is understood that the three-way valve 80 can selectively connect the first end and the second end, or the first end and the third end. In this embodiment, when the air conditioner operates in the cooling mode, the first end and the third end of the three-way valve 80 are connected, and the first end and the second end are not connected. When the air conditioner operates in the heating mode, the first end and the second end of the three-way valve 80 are connected, and the first end and the third end are not connected.
Note that, when the air conditioner operates in the cooling mode, the refrigerant circulation direction of the air conditioner refers to the first circulation direction in fig. 2, and when the air conditioner operates in the heating mode, the refrigerant circulation direction of the air conditioner refers to the second circulation direction in fig. 2. When the refrigerant circulates in the first circulation direction, the liquid-phase refrigerant separated by the gas-liquid separator 70 may sequentially flow through the three-way valve 80 and the throttling part 50, and then flow into the indoor heat exchanger 60.
When the air conditioner operates in the heating mode, the third end of the three-way valve 80 is not connected to the first end, and the first end is connected to the second end. So that the high-temperature gas-phase refrigerant flows out of the discharge port of the compressor and then enters the indoor heat exchanger 60. The gas-phase refrigerant is changed into a liquid-phase refrigerant after being heat-exchanged by the indoor heat exchanger 60, and then enters the second outdoor heat exchanger 40 after flowing through the throttling part 50. When the outdoor environment temperature is low, the liquid-phase refrigerant exchanges heat through the second outdoor heat exchanger 40, and then part of the liquid-phase refrigerant is converted into a high-temperature gas-phase refrigerant. Resulting in the refrigerant in the two-phase state flowing out of the second exterior heat exchanger 40. Therefore, the refrigerant in the two-phase state can be made to flow into the gas-liquid separator 70 from the second port of the gas-liquid separator 70. The gas-liquid separator 70 separates a gas-phase refrigerant and a liquid-phase refrigerant of the two-phase refrigerant, and allows the gas-phase refrigerant to flow out through the third port, sequentially pass through the three-way valve 80 and the four-way valve 20, and then flow back to the return port of the compressor 10. The liquid-phase refrigerant separated by the gas-liquid separator 70 flows out through the first port of the gas-liquid separator 70, flows into the first outdoor heat exchanger 30, and is subjected to sufficient heat exchange by the first outdoor heat exchanger 30, and then is changed into a gas-phase refrigerant, which flows back to the return port of the compressor 10 through the four-way valve 20.
In this implementation, the air conditioner includes the three-way valve 80, so that the gas-liquid separator 70 can improve heating efficiency of the cooling and heating type air conditioner, reduce power consumption of the air conditioner, and improve system stability of the air conditioner.
Referring to fig. 2 or 3, in another embodiment of the air conditioner, the gas-liquid separator 70 further includes a fourth interface. Alternatively, as shown in fig. 2, when the compressor 10 of the air conditioner is a normal compressor 10 (a compressor provided with only an exhaust port and a return port), the fourth port is connected to the compressor 10 via a four-way valve. Between the fourth port and the compressor 10, a solenoid valve 90 is further provided. The solenoid valve 90 may be selectively opened or closed. When the compressor 10 of the air conditioner meets the system protection condition, the electromagnetic valve 90 may be controlled to be opened, so that the low-temperature refrigerant in the gas-liquid separator 70 directly flows back to the compressor 10 to cool the compressor, wherein in the refrigeration mode, the refrigerant flowing back to the compressor 10 is in a two-phase state and has a lower temperature. In the heating mode, the refrigerant flowing back to the compressor 10 is a gas-phase refrigerant, and the gas-phase refrigerant directly returns to improve the mass flow rate of the system of the air conditioner.
In the cooling mode, the liquid-phase refrigerant in the gas-liquid separator 70 occupies a large volume and the pressure difference between the compressor discharge port and the return port is large, so that a part of the liquid-phase refrigerant returns from the gas-liquid separator 70 to the compressor 10 under pressure. In the heating mode, the liquid-phase refrigerant has a small ratio, the pressure difference between the interior of the gas-liquid separator 70 and the return air port of the compressor 10 is small, the liquid phase returns to the first outdoor heat exchanger 30 from the bottom of the gas-liquid separator 70 under the action of gravity, and most of the gas-phase refrigerant can return to the interior of the compressor 10. Alternatively, referring to fig. 3, when compressor 10 is a jet enthalpy-increasing compressor 10, compressor 10 further includes a gas injection port 11. The fourth port is connected to the air outlet 11, and an electromagnetic valve 90 is provided between the fourth port and the air outlet 11. When the electromagnetic valve 90 is opened, the liquid refrigerant separated by the gas-liquid separator 70 may directly flow back to the compressor 10 through the fourth port and the gas nozzle 11 to cool the compressor 10.
It should be noted that, when the compressor 10 is the enhanced vapor injection compressor 10, the solenoid valve 90 may be controlled to be in a normally closed state if the air conditioner operates in the cooling mode. When the air conditioner provided with the jet enthalpy-increasing compressor 10 operates in the cooling mode, if the liquid refrigerant is caused to flow back to the compressor 10 from the jet port 11, the operating load of the compressor 10 is increased, and the temperature of the compressor 10 is further increased.
Referring to fig. 4, the air conditioner further provided in the embodiment of the present invention further includes a processor 1001, for example, a CPU, a memory 1003, and a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The memory 1003 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). The memory 1003 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the air conditioner configuration shown in fig. 4 is not intended to be limiting and may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 4, the memory 1003, which is a kind of computer storage medium, may include therein an operating system and a control program of the air conditioner.
In the air conditioner shown in fig. 4, the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1003, and perform the following operations:
acquiring operating parameters of an air conditioner;
and when the operating parameters meet the system protection conditions, controlling the electromagnetic valve to be opened so as to enable the refrigerant in the gas-liquid separator to flow back to the compressor.
Referring to fig. 5, in an embodiment of the control method of an air conditioner of the present invention, the control method of an air conditioner includes the steps of:
step S10, obtaining the operation parameters of the air conditioner;
and step S20, when the operation parameters meet the system protection conditions, controlling the electromagnetic valve to be opened so as to enable the refrigerant in the gas-liquid separator to flow back to the compressor.
In the conventional air conditioner, when the compressor load of the air conditioner is large, the temperature of the compressor is continuously increased. In order to prevent the compressor of the air conditioner from being heated continuously, the temperature of the compressor can be adjusted by adjusting the opening degree of a throttling part of the air conditioner. However, when the air conditioner is operated in an extreme environment (for example, a cooling operation in a high-temperature region or a heating operation in a low-temperature region), the operation load of the compressor is very large, and the compressor of the air conditioner cannot be brought into an allowable temperature range by adjusting the opening degree of the throttling part, thereby causing a forced shutdown of the compressor due to overheating. The embodiment of the invention provides an air conditioner based on the air conditioner provided in the embodiment and also provides a control method of the air conditioner.
In this embodiment, the air conditioner may acquire its own operation parameter, wherein the operation parameter includes an operation mode of the air conditioner and one of a discharge temperature of the air conditioner and an operation frequency of the compressor.
After the operation parameters of the air conditioner are obtained, whether the air conditioner meets the system protection conditions or not can be judged according to the operation parameters of the air conditioner. When the compressor meets the system protection condition, the compressor of the air conditioner is judged to need to be cooled, and therefore the electromagnetic valve arranged between the compressor and the gas-liquid separator can be opened. Then the low-temperature refrigerant in the gas-liquid separator directly flows back to the compressor, so that the temperature of the compressor is reduced, and the compressor is prevented from being overheated and stopped.
Specifically, the corresponding system protection condition may be set according to the operation mode of the air conditioner. For example, the system protection condition may be set such that the discharge temperature is greater than a preset discharge temperature when the operation mode of the air conditioner is the cooling mode. It will be appreciated that when the air conditioner is operating in the cooling mode, the discharge temperature of the air conditioner is correlated to the compressor temperature, i.e., the greater the discharge temperature, the higher the compressor temperature. Whether the compressor is overheated may be judged according to the discharge temperature. Wherein, the preset exhaust temperature is not preset fixed value, and is determined according to objective factors such as hardware configuration of the air conditioner. For example, a value greater than or equal to 95 ℃ may be set, and in an air conditioner, the preset discharge temperature is set to 95 ℃ or 100 ℃, for example.
And when the air conditioner runs in a heating mode, if the frequency of the compressor is greater than the preset frequency, judging that the system protection condition is met. Whether the system protection condition is satisfied can be judged according to the compressor frequency of the air conditioner, and the system protection action is needed because the load of the compressor is larger when the running frequency of the compressor is higher in the heating mode. Therefore, whether the air conditioner compressor needs to be protected or not can be judged according to the frequency of the compressor. The preset frequency can be determined according to the hardware configuration of the compressor and is a fixed value.
Optionally, in order to improve the accuracy of the compressor judgment, the outdoor environment temperature may be obtained first, and in the heating mode, when the outdoor environment temperature is less than or equal to the preset temperature, and the compressor frequency is greater than the preset frequency, it is determined that the system protection condition is met.
In this embodiment, the gas-liquid mixed refrigerant in the gas-liquid separator cools the compressor, so that the phenomenon that the air conditioner is frequently stopped or damaged due to overhigh exhaust temperature of the compressor can be avoided in the refrigeration mode, and the compressor can be effectively protected.
Alternatively, based on the flow of the embodiment shown in fig. 5, in another embodiment of the control method of the air conditioner of the present invention, the operation parameter further includes an opening value of the throttling component. Wherein, the system protection conditions include: in the refrigeration mode, the opening value is larger than a preset opening value, and the exhaust temperature is larger than a preset exhaust temperature; or in the heating mode, the opening value is greater than a preset opening value, and the frequency of the compressor is greater than a preset frequency.
It is understood that the preset opening value may be set to be larger than the maximum opening value of the throttling part, and when the opening value of the throttling part does not reach the maximum opening value, the air conditioner may be controlled to adjust the temperature of the compressor by adjusting the opening value of the throttling part.
In addition, an embodiment of the present invention further provides an air conditioner, where the air conditioner includes a memory, a processor, and a control program of the air conditioner that is stored in the memory and is executable on the processor, and the control program of the air conditioner, when executed by the processor, implements the steps of the control method of the air conditioner according to the above embodiments.
Furthermore, an embodiment of the present invention further provides a computer-readable storage medium, where a control program of an air conditioner is stored, and the control program of the air conditioner, when executed by a processor, implements the steps of the control method of the air conditioner according to the above embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., air conditioner, etc.) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. An air conditioner is characterized by comprising a compressor, a four-way valve, a first outdoor heat exchanger, a second outdoor heat exchanger, a throttling component, an indoor heat exchanger and a gas-liquid separator; the gas-liquid separator comprises a first interface, a second interface and a third interface, wherein the first interface of the gas-liquid separator is connected with the compressor through the first outdoor heat exchanger and the four-way valve in sequence, and the second interface of the gas-liquid separator is connected with the indoor heat exchanger through the second outdoor heat exchanger and the throttling component in sequence; and the third interface is connected with the compressor through the throttling component and the indoor heat exchanger in sequence.
2. The air conditioner according to claim 1, further comprising a three-way valve having a first end connected to the third port, a second end connected to the compressor through the four-way valve, and a third end connected to the indoor heat exchanger through the throttling part; the three-way valve is set to selectively conduct the first end and the second end or the first end and the third end.
3. The air conditioner according to claim 1, wherein the gas-liquid separator further comprises a fourth port connected to the compressor, wherein a solenoid valve is disposed between the fourth port and the compressor.
4. The air conditioner according to claim 3 wherein said compressor is configured as an enhanced vapor injection compressor and said fourth port is connected to a vapor injection port of said enhanced vapor injection compressor.
5. A control method of an air conditioner to which the air conditioner as claimed in claim 3 or 4 is applied, the control method of an air conditioner comprising the steps of:
acquiring operating parameters of an air conditioner;
and when the operating parameters meet the system protection conditions, controlling the electromagnetic valve to be opened so as to enable the refrigerant in the gas-liquid separator to flow back to the compressor.
6. The control method of an air conditioner according to claim 5, wherein the operation parameter includes an operation mode, and one of a compressor frequency and a discharge air temperature, and the system protection condition includes:
in the refrigeration mode, the exhaust temperature is greater than a preset exhaust temperature; or
In the heating mode, the frequency of the compressor is greater than a preset frequency.
7. The control method of an air conditioner according to claim 6, wherein the system protection condition further comprises:
in the heating mode, the outdoor environment temperature is less than or equal to a preset temperature, and the frequency of the compressor is greater than a preset frequency.
8. The control method of an air conditioner according to claim 5, wherein the operation parameter further includes an opening value of a throttle part, and the system protection condition includes:
in the refrigeration mode, the opening value is greater than or equal to a preset opening value, and the exhaust temperature is greater than a preset exhaust temperature; or
In the heating mode, the opening value is greater than or equal to a preset opening value, and the frequency of the compressor is greater than a preset frequency.
9. The control method of an air conditioner according to claim 5, wherein the compressor of the air conditioner is set as a vapor injection enthalpy compressor, and the system protection condition includes:
the air conditioner runs in a heating mode, and the frequency of the compressor is greater than the preset frequency.
10. A computer-readable storage medium, characterized in that a control program of an air conditioner is stored thereon, which when executed by a processor implements the steps of the control method of the air conditioner according to any one of claims 5 to 9.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101639306A (en) * 2008-07-29 2010-02-03 乐金电子(天津)电器有限公司 Refrigeration circulation system of heat exchanger of air conditioner outdoor unit
CN103807917A (en) * 2012-11-08 2014-05-21 珠海格力电器股份有限公司 Air conditioner and air supply control method applied to same
DE112014002008T5 (en) * 2013-04-18 2015-12-31 Denso Corporation Refrigeration cycle device
CN206160544U (en) * 2016-07-29 2017-05-10 广东美的制冷设备有限公司 Heating and cooling air conditioner
CN107477900A (en) * 2016-10-31 2017-12-15 广东美的制冷设备有限公司 Air conditioner circulating system and round-robin method and air-conditioning
CN208635259U (en) * 2018-08-10 2019-03-22 广东美的暖通设备有限公司 A kind of refrigeration system and air-conditioning
CN110608545A (en) * 2019-09-29 2019-12-24 海信（山东）空调有限公司 Air conditioning system and control method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101639306A (en) * 2008-07-29 2010-02-03 乐金电子(天津)电器有限公司 Refrigeration circulation system of heat exchanger of air conditioner outdoor unit
CN103807917A (en) * 2012-11-08 2014-05-21 珠海格力电器股份有限公司 Air conditioner and air supply control method applied to same
DE112014002008T5 (en) * 2013-04-18 2015-12-31 Denso Corporation Refrigeration cycle device
CN206160544U (en) * 2016-07-29 2017-05-10 广东美的制冷设备有限公司 Heating and cooling air conditioner
CN107477900A (en) * 2016-10-31 2017-12-15 广东美的制冷设备有限公司 Air conditioner circulating system and round-robin method and air-conditioning
CN208635259U (en) * 2018-08-10 2019-03-22 广东美的暖通设备有限公司 A kind of refrigeration system and air-conditioning
CN110608545A (en) * 2019-09-29 2019-12-24 海信（山东）空调有限公司 Air conditioning system and control method thereof

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