CN109974169B - Double-working-medium air conditioner - Google Patents
Double-working-medium air conditioner Download PDFInfo
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- CN109974169B CN109974169B CN201910150064.2A CN201910150064A CN109974169B CN 109974169 B CN109974169 B CN 109974169B CN 201910150064 A CN201910150064 A CN 201910150064A CN 109974169 B CN109974169 B CN 109974169B
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0003—Exclusively-fluid 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
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Abstract
A dual-working medium air conditioner belongs to the technical field of air conditioning equipment; the refrigerating working medium in the liquid storage device for refrigeration is used during refrigeration, the heating working medium in the liquid storage device for heating is used during heating, the refrigerating working medium and the heating working medium form double working media during refrigeration, the refrigerating working medium with high refrigerating efficiency is used as a system refrigerating cycle during refrigeration, the heating working medium with high heating efficiency is used as a system heating cycle during heating, the energy efficiency ratio is improved, the heating working medium in the system is collected and stored in the liquid storage device for heating during refrigeration, the refrigerating working medium in the system is collected and stored in the liquid storage device for refrigeration during heating, energy exchange is continuously generated with the outside by utilizing the circulation change of the self thermal states of the two different working media, the purpose of refrigeration (heating) is achieved, and the effect of improving the refrigeration (heating) energy conversion is achieved.
Description
Technical Field
The invention belongs to the technical field of air conditioning equipment, and particularly relates to a double-working-medium air conditioner.
Background
The structure of the air conditioner generally comprises a refrigeration system, an electrical system, a box body and a panel; the air conditioner cooling and heating part is a closed circulation system formed by a compressor, a condenser, a throttling device and an evaporator.
The refrigerant (working medium) is a substance which completes refrigeration (heating) cycle working in the refrigeration (heating) process, circulates in the refrigeration machine system, and continuously exchanges energy with the outside through the cycle change of the self thermal state to achieve the purpose of refrigeration (heating); the refrigerant comprises a single refrigerant and a mixed refrigerant, wherein the mixed refrigerant consists of two or more compound mixed refrigerants and is divided into an azeotropic mixed refrigerant and a non-azeotropic mixed refrigerant according to the characteristics of the mixed refrigerant; the present air conditioner only uses one kind of refrigerant as refrigerant, and in order to raise refrigerating (heating) efficiency and to solve the problem of energy conversion of the present air conditioner by using single refrigerant, the present invention uses one kind of refrigerant for refrigerating and uses another kind of refrigerant for heating.
Disclosure of Invention
The invention mainly solves the technical problems in the prior art and provides a dual-working-medium air conditioner.
The technical problem of the invention is mainly solved by the following technical scheme: a dual-working-medium air conditioner comprises a compressor, a four-way reversing valve, a first refrigerant collecting and conducting reversing valve, a second refrigerant collecting and conducting reversing valve, a condenser, a first one-way valve, a second one-way valve, a third one-way valve, a liquid storage device for refrigeration, a liquid storage device for heating, a first pipeline on-off electric control switch valve, a second pipeline on-off electric control switch valve, a filter for refrigeration, a filter for heating, a throttling device for refrigeration, a throttling device for heating, an evaporator and a gas-liquid separator, wherein the liquid storage device for refrigeration contains a working medium for heating, the compressor, the four-way reversing valve, the first refrigerant collecting and conducting reversing valve, the second refrigerant collecting and conducting reversing valve, the condenser, the first one-way valve, the second one-way valve, the third one-way valve, the liquid storage device for refrigeration, the liquid storage device for heating and the first pipeline on-off electric control switch valve, The second pipeline is connected with the electric control switch valve, the refrigeration filter, the heating filter, the refrigeration throttling device, the heating throttling device, the evaporator and the gas-liquid separator to form a dual-working-medium cooling and heating air conditioning system;
the refrigerating working medium stored in the liquid reservoir for refrigerating sequentially passes through a first pipeline on-off electric control switch valve, a refrigerating filter, a throttling device for refrigerating, an evaporator, an end F2 to an end A2 of a second refrigerant collecting and conducting reversing valve, an end E to an end S of a four-way reversing valve, a gas-liquid separator, a compressor, an end D to an end C of the four-way reversing valve, an end A1 to an end F1 of the first refrigerant collecting and conducting reversing valve, a condenser and a second one-way valve, and the refrigerating working medium returns to the liquid reservoir for refrigerating to form a refrigerating circulation system;
the heating medium stored in the heating liquid storage device sequentially passes through a second pipeline on-off electric control switch valve, a heating filter, a heating throttling device, a condenser, an end F1 to an end A1 of a first refrigerant collecting and conducting reversing valve, an end C to an end S of a four-way reversing valve, a gas-liquid separator, a compressor, an end D to an end E of the four-way reversing valve, an end A2 to an end F2 of a second refrigerant collecting and conducting reversing valve, an evaporator and a third one-way valve, and the heating medium returns to the heating liquid storage device, so that a heating circulating system is formed.
The refrigeration method specifically comprises the following steps: the dual-working-medium air-conditioning system is directly started in the refrigerating state when the dual-working-medium air-conditioning system needs to be refrigerated or in the heating state, if the dual-working-medium air-conditioning system needs to be started in the refrigerating state, the dual-working-medium air-conditioning system needs to be started in the original heating state, the second refrigerant collecting and conducting reversing valve is opened and the second pipeline on-off electric control switch valve is closed, so that the heating working medium in the system sequentially passes through the heating filter, the heating throttling device, the condenser, the F1 end to the A1 end of the first refrigerant collecting and conducting reversing valve, the C end to the S end of the four-way reversing valve, the gas-liquid separator, the compressor, the D end to the E end of the four-way reversing valve and the A2 end to the B2 end of the second refrigerant collecting and conducting reversing valve to enter the liquid storage device for heating, and the heating working medium in the evaporator passes through the F2 end to the H2 end of the second refrigerant collecting and conducting reversing valve, The method comprises the steps that a heating working medium recovered in an evaporator and a heating working medium recovered at the S end of a four-way reversing valve enter a gas-liquid separator together through an S end outlet of a first one-way valve and the four-way reversing valve, the heating working medium is sucked by a compressor and then flows from the D end to the E end of the four-way reversing valve, a liquid reservoir for heating is collected from the A2 end to the B2 end of a second refrigerant collecting and conducting reversing valve, all the heating working medium in a dual-working-medium air-conditioning system is collected into the liquid reservoir for heating, the second refrigerant collecting and conducting reversing valve is closed after the heating working medium in the dual-working-medium air-conditioning system is collected, the A2 end of the second refrigerant collecting and conducting reversing valve is conducted with the F2 end, and a first pipeline on-off electrically controlled switching valve is opened at the same time, so that the refrigerating working medium is stored in the.
The heating method specifically comprises the following steps: the dual-refrigerant air conditioning system can be directly started in a heating state, for example, when in a cooling state, the system is started in an original cooling state, the first refrigerant collecting and conducting reversing valve is opened, the first pipeline on-off electric control switch valve is closed, so that the cooling working medium in the system sequentially passes through a filter for refrigeration, a throttling device for refrigeration, an evaporator and an F2 end to an A2 end on the second refrigerant collecting and conducting reversing valve, an E end to an S end of the four-way reversing valve, a gas-liquid separator, a compressor, a D end to a C end of the four-way reversing valve, an A1 end to a B1 end of the first refrigerant collecting and conducting reversing valve to enter a liquid reservoir for refrigeration, meanwhile, the cooling working medium in the condenser passes through an F1 end to an H1 end on the first refrigerant collecting and conducting reversing valve, the first one-way valve is connected with an S end outlet of the four-way reversing valve, the cooling working medium recovered in the condenser and the S end recovered from the four-, after being sucked by a compressor, a refrigeration working medium is collected into a liquid storage device for refrigeration from a D end to a C end of a four-way reversing valve and from an A1 end to a B1 end of a first refrigerant collecting and conducting reversing valve, at the moment, all the refrigeration working medium in the system is collected into the liquid storage device for refrigeration, after the refrigeration working medium in a dual-working-medium cooling and heating air-conditioning system is collected, the first refrigerant collecting and conducting reversing valve is closed, the A1 end of the first refrigerant collecting and conducting reversing valve is conducted with the F1 end, and meanwhile, a second pipeline on-off electric control switch valve is opened, so that the system is internally stored with the refrigeration working medium, and the refrigeration-to-heating method is completed.
The invention has the following beneficial effects: the refrigerating working medium in the liquid storage device for refrigeration is used during refrigeration, the heating working medium in the liquid storage device for heating is used during heating, the refrigerating working medium and the heating working medium used during heating form double working media, the heating working medium for heating is stored in the storage device for heating during refrigeration, the refrigerating working medium for refrigeration is stored in the storage device for refrigeration during heating, one refrigerating working medium with high refrigeration efficiency is used as a system refrigeration cycle during refrigeration, one heating working medium with high heating efficiency is used as a system heating cycle during heating, the energy efficiency ratio is favorably improved, the heating working medium in the system is collected and stored in the liquid storage device for heating during refrigeration, the refrigerating working medium in the system is collected and stored in the liquid storage device for refrigeration during heating, and energy exchange is continuously carried out with the outside by utilizing the cycle change of the self thermal states of the two different working media, the aim of refrigeration (heating) is achieved, and the effect of improving the energy conversion of refrigeration (heating) is achieved, so that the invention has the characteristics of simple structure, reasonable design and the like.
Drawings
FIG. 1 is a schematic view of a structural connection of the present invention;
in the figure: 1. a compressor; 2. a four-way reversing valve; 3. a first refrigerant collecting conduction reversing valve; 4. a second refrigerant collecting conduction reversing valve; 5. a condenser; 6. a first check valve; 7. a second one-way valve; 8. a third check valve; 9. a liquid reservoir for refrigeration; 10. a reservoir for heating; 11. the first pipeline is connected with and disconnected with an electric control switch valve; 12. the second pipeline is connected with and disconnected with an electric control switch valve; 13. a filter for refrigeration; 14. a heating filter; 15. a throttling device for refrigeration; 16. a throttling device for heating; 17. an evaporator; 18. a gas-liquid separator.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b): a dual-working-medium air conditioner comprises a compressor, a four-way reversing valve, a first refrigerant collecting and conducting reversing valve, a second refrigerant collecting and conducting reversing valve, a condenser, a first one-way valve, a second one-way valve, a third one-way valve, a liquid storage device for refrigeration, a liquid storage device for heating, a first pipeline on-off electric control switch valve, a second pipeline on-off electric control switch valve, a filter for refrigeration, a filter for heating, a throttling device for refrigeration, a throttling device for heating, an evaporator and a gas-liquid separator, wherein the liquid storage device for refrigeration is internally provided with a working medium for heating, the compressor, the four-way reversing valve, the first refrigerant collecting and conducting reversing valve, the second refrigerant collecting and conducting reversing valve, the condenser, the first one-way valve, the second one-way valve, the third one-way valve, the liquid storage device for refrigeration, the liquid storage device for heating, the four-way, The first pipeline on-off electric control switch valve, the second pipeline on-off electric control switch valve, the filter for refrigeration, the filter for heating, the throttling device for refrigeration, the throttling device for heating, the evaporator and the gas-liquid separator form a dual-working-medium cooling and heating air conditioning system;
the refrigerating working medium stored in the liquid reservoir for refrigerating sequentially passes through a first pipeline on-off electric control switch valve, a refrigerating filter, a throttling device for refrigerating, an evaporator, an end F2 to an end A2 of a second refrigerant collecting and conducting reversing valve, an end E to an end S of a four-way reversing valve, a gas-liquid separator, a compressor, an end D to an end C of the four-way reversing valve, an end A1 to an end F1 of the first refrigerant collecting and conducting reversing valve, a condenser and a second one-way valve, and the refrigerating working medium returns to the liquid reservoir for refrigerating to form a refrigerating circulation system;
the heating medium stored in the heating liquid storage device sequentially passes through a second pipeline on-off electric control switch valve, a heating filter, a heating throttling device, a condenser, an end F1 to an end A1 of a first refrigerant collecting and conducting reversing valve, an end C to an end S of a four-way reversing valve, a gas-liquid separator, a compressor, an end D to an end E of the four-way reversing valve, an end A2 to an end F2 of a second refrigerant collecting and conducting reversing valve, an evaporator and a third one-way valve, and the heating medium returns to the heating liquid storage device, so that a heating circulating system is formed.
The refrigeration method specifically comprises the following steps: the dual-working-medium air-conditioning system is directly started in the refrigerating state when the dual-working-medium air-conditioning system needs to be refrigerated or in the heating state, if the dual-working-medium air-conditioning system needs to be started in the refrigerating state, the dual-working-medium air-conditioning system needs to be started in the original heating state, the second refrigerant collecting and conducting reversing valve is opened and the second pipeline on-off electric control switch valve is closed, so that the heating working medium in the system sequentially passes through the heating filter, the heating throttling device, the condenser, the F1 end to the A1 end of the first refrigerant collecting and conducting reversing valve, the C end to the S end of the four-way reversing valve, the gas-liquid separator, the compressor, the D end to the E end of the four-way reversing valve and the A2 end to the B2 end of the second refrigerant collecting and conducting reversing valve to enter the liquid storage device for heating, and the heating working medium in the evaporator passes through the F2 end to the H2 end of the second refrigerant collecting and conducting reversing valve, The method comprises the steps that a heating working medium recovered in an evaporator and a heating working medium recovered at the S end of a four-way reversing valve enter a gas-liquid separator together through an S end outlet of a first one-way valve and the four-way reversing valve, the heating working medium is sucked by a compressor and then flows from the D end to the E end of the four-way reversing valve, a liquid reservoir for heating is collected from the A2 end to the B2 end of a second refrigerant collecting and conducting reversing valve, all the heating working medium in a dual-working-medium air-conditioning system is collected into the liquid reservoir for heating, the second refrigerant collecting and conducting reversing valve is closed after the heating working medium in the dual-working-medium air-conditioning system is collected, the A2 end of the second refrigerant collecting and conducting reversing valve is conducted with the F2 end, and a first pipeline on-off electrically controlled switching valve is opened at the same time, so that the refrigerating working medium is stored in the.
The heating method specifically comprises the following steps: the dual-refrigerant air conditioning system can be directly started in a heating state, for example, when in a cooling state, the system is started in an original cooling state, the first refrigerant collecting and conducting reversing valve is opened, the first pipeline on-off electric control switch valve is closed, so that the cooling working medium in the system sequentially passes through a filter for refrigeration, a throttling device for refrigeration, an evaporator and an F2 end to an A2 end on the second refrigerant collecting and conducting reversing valve, an E end to an S end of the four-way reversing valve, a gas-liquid separator, a compressor, a D end to a C end of the four-way reversing valve, an A1 end to a B1 end of the first refrigerant collecting and conducting reversing valve to enter a liquid reservoir for refrigeration, meanwhile, the cooling working medium in the condenser passes through an F1 end to an H1 end on the first refrigerant collecting and conducting reversing valve, the first one-way valve is connected with an S end outlet of the four-way reversing valve, the cooling working medium recovered in the condenser and the S end recovered from the four-, after being sucked by a compressor, a refrigeration working medium is collected into a liquid storage device for refrigeration from a D end to a C end of a four-way reversing valve and from an A1 end to a B1 end of a first refrigerant collecting and conducting reversing valve, at the moment, all the refrigeration working medium in the system is collected into the liquid storage device for refrigeration, after the refrigeration working medium in a dual-working-medium cooling and heating air-conditioning system is collected, the first refrigerant collecting and conducting reversing valve is closed, the A1 end of the first refrigerant collecting and conducting reversing valve is conducted with the F1 end, and meanwhile, a second pipeline on-off electric control switch valve is opened, so that the system is internally stored with the refrigeration working medium, and the refrigeration-to-heating method is completed.
The operation principle of the invention is as follows: the working medium for refrigeration stored in the liquid reservoir for refrigeration sequentially passes through the first pipeline on-off electric control switch valve, the filter for refrigeration, the throttling device for refrigeration, the evaporator, the end F2 to the end A2 of the second refrigerant collecting and conducting reversing valve, the end E to the end S of the four-way reversing valve, the gas-liquid separator, the compressor, the end D to the end C of the four-way reversing valve, the end A1 to the end F1 of the first refrigerant collecting and conducting reversing valve, the condenser and the working medium for refrigeration of the second one-way valve to return to the liquid reservoir for refrigeration, so that a refrigeration circulating system is formed; the heating medium stored in the heating liquid storage device sequentially passes through a second pipeline on-off electric control switch valve, a heating filter, a heating throttling device, a condenser, an end F1 to an end A1 of a first refrigerant collecting and conducting reversing valve, an end C to an end S of a four-way reversing valve, a gas-liquid separator, a compressor, an end D to an end E of the four-way reversing valve, an end A2 to an end F2 of a second refrigerant collecting and conducting reversing valve, an evaporator and a third one-way valve, and the heating medium returns to the heating liquid storage device to form a heating circulating system; the refrigerating working medium and the heating working medium form double working media, the heating working medium for heating is stored in the heating storage device during refrigerating, the refrigerating working medium for refrigerating is stored in the refrigerating storage device during heating, one refrigerating working medium is used during refrigerating, the other refrigerating working medium is used during heating, and refrigerating (heating) energy conversion is improved by utilizing the circulation change of the self thermal states of the two different refrigerating working media.
Finally, it should be noted that the above embodiments are merely representative examples of the present invention. It is obvious that the invention is not limited to the above-described embodiments, but that many variations are possible. Any simple modification, equivalent change and modification made to the above embodiments in accordance with the technical spirit of the present invention should be considered to be within the scope of the present invention.
Claims (3)
1. A dual-working-medium air conditioner comprises a compressor, a four-way reversing valve, a first refrigerant collecting and conducting reversing valve, a second refrigerant collecting and conducting reversing valve, a condenser, a first one-way valve, a second one-way valve, a third one-way valve, a liquid storage device for refrigeration, a liquid storage device for heating, a first pipeline on-off electric control switch valve, a second pipeline on-off electric control switch valve, a filter for refrigeration, a filter for heating, a throttling device for refrigeration, a throttling device for heating, an evaporator and a gas-liquid separator The first pipeline on-off electric control switch valve, the second pipeline on-off electric control switch valve, the filter for refrigeration, the filter for heating, the throttling device for refrigeration, the throttling device for heating, the evaporator and the gas-liquid separator form a dual-working-medium cooling and heating air conditioning system;
the working medium for refrigeration stored in the liquid reservoir for refrigeration sequentially passes through the first pipeline on-off electric control switch valve, the filter for refrigeration, the throttling device for refrigeration, the evaporator, the end F2 to the end A2 of the second refrigerant collecting and conducting reversing valve, the end E to the end S of the four-way reversing valve, the gas-liquid separator, the compressor, the end D to the end C of the four-way reversing valve, the end A1 to the end F1 of the first refrigerant collecting and conducting reversing valve, the condenser and the working medium for refrigeration of the second one-way valve to return to the liquid reservoir for refrigeration, so that a refrigeration circulating system is formed;
the heating medium stored in the heating liquid storage device sequentially passes through a second pipeline on-off electric control switch valve, a heating filter, a heating throttling device, a condenser, an end F1 to an end A1 of a first refrigerant collecting and conducting reversing valve, an end C to an end S of a four-way reversing valve, a gas-liquid separator, a compressor, an end D to an end E of the four-way reversing valve, an end A2 to an end F2 of a second refrigerant collecting and conducting reversing valve, an evaporator and a third one-way valve, the heating medium returns to the heating liquid storage device, and a heating circulating system is formed.
2. The method for refrigerating a dual-working-medium air conditioner according to claim 1, wherein the refrigerating method specifically comprises: the dual-working-medium air-conditioning system is directly started in the refrigerating state when the dual-working-medium air-conditioning system needs to be refrigerated or in the heating state, if the dual-working-medium air-conditioning system needs to be started in the refrigerating state, the dual-working-medium air-conditioning system needs to be started in the original heating state, the second refrigerant collecting and conducting reversing valve is opened and the second pipeline on-off electric control switch valve is closed, so that the heating working medium in the system sequentially passes through the heating filter, the heating throttling device, the condenser, the F1 end to the A1 end of the first refrigerant collecting and conducting reversing valve, the C end to the S end of the four-way reversing valve, the gas-liquid separator, the compressor, the D end to the E end of the four-way reversing valve and the A2 end to the B2 end of the second refrigerant collecting and conducting reversing valve to enter the liquid storage device for heating, and the heating working medium in the evaporator passes through the F2 end to the H2 end of the second refrigerant collecting and conducting reversing valve, The method comprises the steps that a heating working medium recovered in an evaporator and a heating working medium recovered at the S end of a four-way reversing valve enter a gas-liquid separator together through an S end outlet of a first one-way valve and the four-way reversing valve, the heating working medium is sucked by a compressor and then flows from the D end to the E end of the four-way reversing valve, a liquid reservoir for heating is collected from the A2 end to the B2 end of a second refrigerant collecting and conducting reversing valve, all the heating working medium in a dual-working-medium air-conditioning system is collected into the liquid reservoir for heating, the second refrigerant collecting and conducting reversing valve is closed after the heating working medium in the dual-working-medium air-conditioning system is collected, the A2 end of the second refrigerant collecting and conducting reversing valve is conducted with the F2 end, and a first pipeline on-off electrically controlled switching valve is opened at the same time, so that the refrigerating working medium is stored in the.
3. The heating method of a dual-air-conditioning system as claimed in claim 1, wherein the heating method comprises: the dual-refrigerant air conditioning system can be directly started in a heating state, for example, when in a cooling state, the system is started in an original cooling state, the first refrigerant collecting and conducting reversing valve is opened, the first pipeline on-off electric control switch valve is closed, so that the cooling working medium in the system sequentially passes through a filter for refrigeration, a throttling device for refrigeration, an evaporator and an F2 end to an A2 end on the second refrigerant collecting and conducting reversing valve, an E end to an S end of the four-way reversing valve, a gas-liquid separator, a compressor, a D end to a C end of the four-way reversing valve, an A1 end to a B1 end of the first refrigerant collecting and conducting reversing valve to enter a liquid reservoir for refrigeration, meanwhile, the cooling working medium in the condenser passes through an F1 end to an H1 end on the first refrigerant collecting and conducting reversing valve, the first one-way valve is connected with an S end outlet of the four-way reversing valve, the cooling working medium recovered in the condenser and the S end recovered from the four-, after being sucked by a compressor, a refrigeration working medium is collected into a liquid storage device for refrigeration from a D end to a C end of a four-way reversing valve and from an A1 end to a B1 end of a first refrigerant collecting and conducting reversing valve, at the moment, all the refrigeration working medium in the system is collected into the liquid storage device for refrigeration, after the refrigeration working medium in a dual-working-medium cooling and heating air-conditioning system is collected, the first refrigerant collecting and conducting reversing valve is closed, the A1 end of the first refrigerant collecting and conducting reversing valve is conducted with the F1 end, and meanwhile, a second pipeline on-off electric control switch valve is opened, so that the system is internally stored with the refrigeration working medium, and the refrigeration-to-heating method is completed.
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| CN201910150064.2A CN109974169B (en) | 2019-02-28 | 2019-02-28 | Double-working-medium air conditioner |
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| CN201910150064.2A CN109974169B (en) | 2019-02-28 | 2019-02-28 | Double-working-medium air conditioner |
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| JP4848608B2 (en) * | 2001-09-12 | 2011-12-28 | 三菱電機株式会社 | Refrigerant circuit |
| KR100688171B1 (en) * | 2004-12-29 | 2007-03-02 | 엘지전자 주식회사 | Multiple air conditioner and refrigerant withdrawing method |
| CN2821492Y (en) * | 2005-05-10 | 2006-09-27 | 刘小江 | Pressure reducing generation jet suction compound refrigrating device |
| KR20180107280A (en) * | 2016-02-16 | 2018-10-01 | 허니웰 인터내셔널 인코포레이티드 | Multistage Low GWP Air Conditioning System |
| CN207146960U (en) * | 2017-08-05 | 2018-03-27 | 黄林 | A kind of refrigeration air-conditioner for facilitating telephone-moving and refrigerant-recovery |
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