CN105758055A - Ultralow temperature total heat recovery air-cooling heat pump unit - Google Patents

Ultralow temperature total heat recovery air-cooling heat pump unit Download PDF

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Publication number
CN105758055A
CN105758055A CN201610290720.5A CN201610290720A CN105758055A CN 105758055 A CN105758055 A CN 105758055A CN 201610290720 A CN201610290720 A CN 201610290720A CN 105758055 A CN105758055 A CN 105758055A
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CN
China
Prior art keywords
valve
heat exchanger
mouth
invigorating
economizer
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Pending
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CN201610290720.5A
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Chinese (zh)
Inventor
邰红迎
张长民
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Shandong Modern Lai En Air Conditioner Equipment Co Ltd
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Shandong Modern Lai En Air Conditioner Equipment Co Ltd
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Priority to CN201610290720.5A priority Critical patent/CN105758055A/en
Publication of CN105758055A publication Critical patent/CN105758055A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B13/00Compression machines, plant or systems with reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B29/00Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
    • F25B29/003Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/20Disposition of valves, e.g. of on-off valves or flow control valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • F25B41/31Expansion valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • F25B41/31Expansion valves
    • F25B41/34Expansion valves with the valve member being actuated by electric means, e.g. by piezo-electric actuators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2400/00General 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
    • F25B2400/07Details of compressors or related parts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2400/00General 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
    • F25B2400/13Economisers
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/52Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The invention discloses an ultralow temperature total heat recovery air-cooling heat pump unit. The inlet of a liquid storage device is communicated with each of a total heat recovery device, a fin type heat exchanger and a shell-tube heat exchanger; the outlet of the liquid storage device is communicated with a filter; the filter is communicated with the main pipe inlet H1 of an economizer and an air supplementing electronic expansion valve; the main pipe outlet H2 of the economizer is communicated with a main pipe electronic expansion valve; the air supplementing electronic expansion valve is communicated with the air supplementing inlet G1 of the economizer; the air supplementing outlet G2 of the economizer is communicated with the medium pressure opening of an air supplementing enthalpy increasing compressor; the main pipe electronic expansion valve is communicated with a refrigerating normally closed solenoid valve and a heating normally closed solenoid valve; the refrigerating normally closed solenoid valve is communicated with the shell-tube heat exchanger and a one-way valve; the heating normally closed solenoid valve is communicated with the fin type heat exchanger and another one-way valve. The ultralow temperature total heat recovery air-cooling heat pump unit is simple in structure; non-stop switching in various modes can be realized; a series of problems caused by starting and stopping a system frequently are avoided; the application range of the unit is enlarged; the unit performance is high; potential failure rate is reduced; the operating conditions of a pressing machine are improved.

Description

A kind of ultralow temperature total heat recovery Air-Cooled Heat Pump Unit
Technical field
The present invention relates to technical field of air conditioner refrigeration, specifically a kind of ultralow temperature total heat recovery Air-Cooled Heat Pump Unit.
Background technology
Tradition total heat recovery unit includes refrigeration mode, heating mode, heat recovery mode and water heater pattern, wherein, refrigeration mode, heating mode, heat recovery mode and water heater pattern adopt a three-way valve switching, and water heater defrosting then has a cross valve switchover operation refrigeration mode to carry out.In above-mentioned total heat recovery unit, need to shut down in mode handover procedure, switching working mode frequently, result in unit switching on and shutting down frequently for having a significant impact in service life of other associated components such as compressor, unit valve member, water pump.And compressor generally has Minimum Idle Time to limit, being do not allow to be again started up compressor in the certain time after namely shutting down, therefore patten transformation needs after shutting down to wait that certain time could start shooting again.So causing that user is when needs use air-conditioning, unit but can not be started shooting at once, therefore can be difficult to meet the workload demand of user within a certain period of time.
Current total heat recovery is divided into two kinds, and one is tandem total heat recovery, and one is parallel total heat recovery.Tandem total heat recovery is in refrigeration with when heating, and connects a heat regenerator all the time in high-pressure side, and droop loss is relatively big, does not accomplish the best efficiency of design.In parallel total heat recovery unit; such as, Chinese patent literature discloses a kind of total heat recovery unit [application number: CN201320863387], two cross valves of its design; solve the problem shutting down switching, it is possible to achieve do not shut down heat recovery mode and the switching of water heater pattern.But there is an obvious defect in this patent of invention, namely can not complete the mutual conversion of water heater pattern and heat recovery mode by switching 4WV2 when not stopping press, main cause is that cross valve 4WV2 does not do corresponding transformation, upon handover, the pilot pipe of cross valve 4WV2 is in low-pressure state, it is impossible to provide the pressure promoting slide block.
Conventional parallel or series connection total heat recovery unit when recuperation of heat or water heating owing to leaving water temperature is higher, pressure reduction is bigger, delivery temperature is higher, in order to ensure the properly functioning well matched liquid-jet device of compressor, it is forced to compressor feed flow and reduces delivery temperature, use two throttle mechanisms, system complex, fault rate is of a relatively high, and the ambient temperature that unit uses is-10 DEG C~43 DEG C, has not adapted to northern area and has used.
Therefore; for overcoming the deficiency of above-mentioned technology and designing a simple in construction; can realize not shutting down switching under each pattern; avoid the series of problems because the frequent start-stop of system brings; expand unit and use scope; improve overall performance, reduce a kind of ultralow temperature total heat recovery Air-Cooled Heat Pump Unit of fault rate, inventor's problem to be solved just.
Summary of the invention
For the deficiencies in the prior art; it is an object of the invention to provide a kind of ultralow temperature total heat recovery Air-Cooled Heat Pump Unit; its simple in construction; can realize not shutting down switching under each pattern; avoid the series of problems because the frequent start-stop of system brings; expand unit and use scope, overall performance can be improved, reduce fault rate.
nullThe technical solution adopted for the present invention to solve the technical problems is: a kind of ultralow temperature total heat recovery Air-Cooled Heat Pump Unit,It includes QI invigorating enthalpy compressor、Three-way solenoid valve、Solenoid operated four-way valve、Total heat recovery device、Finned heat exchanger、Check valve、Reservoir、Filter、Economizer、QI invigorating electric expansion valve、Main road electric expansion valve、Heat normally closed solenoid valve、Refrigeration normally closed solenoid valve、Case tube heat exchanger、Gas-liquid separator,The import of described reservoir respectively with total heat recovery device、Finned heat exchanger、Case tube heat exchanger is connected,The outlet of described reservoir is connected with filter,Described filter respectively with economizer main road import H1、QI invigorating electric expansion valve is connected,Described economizer main road outlet H2 is connected with main road electric expansion valve,Described QI invigorating electric expansion valve is connected with economizer QI invigorating import G1,Described economizer QI invigorating outlet G2 is connected with pressing mouth F1 in QI invigorating enthalpy compressor,Described main road electric expansion valve and refrigeration normally closed solenoid valve、Heat normally closed solenoid valve to be connected,Described refrigeration normally closed solenoid valve and case tube heat exchanger、Check valve is connected,Described heat normally closed solenoid valve and finned heat exchanger、Check valve is connected;
The D1 mouth of described three-way solenoid valve is connected with the air vent A1 of QI invigorating enthalpy compressor, the C1 mouth of described three-way solenoid valve is connected with total heat recovery device, the E1 mouth of described three-way solenoid valve is connected with the D2 mouth of solenoid operated four-way valve, the E2 mouth of described solenoid operated four-way valve is connected with case tube heat exchanger, the C2 mouth of described solenoid operated four-way valve is connected with finned heat exchanger, the S2 mouth of described solenoid operated four-way valve is connected with the import of gas-liquid separator, and the outlet of described gas-liquid separator is connected with the air entry B1 of QI invigorating enthalpy compressor.
Further, being both provided with check valve between described reservoir and total heat recovery device, finned heat exchanger, case tube heat exchanger, described check valve includes the first check valve, the second check valve, the 3rd check valve;The entrance point of described first check valve is connected with described finned heat exchanger, and the port of export of described first check valve is connected with the entrance point of described reservoir;The entrance point of described second check valve is connected with described case tube heat exchanger, and the port of export of described second check valve is connected with the entrance point of described reservoir;The entrance point of described 3rd check valve is connected with described total heat recovery device, and the described port of export of the 3rd check valve is connected with the entrance point of described reservoir.
Further, described case tube heat exchanger is dry evaporator.
Further, described finned heat exchanger is air cooled condenser.
Further, the pilot pipe b of described three-way solenoid valve is connected with the B1 air entry of described QI invigorating enthalpy compressor.
Further, the pilot pipe d1 of described solenoid operated four-way valve is connected with the A1 air vent of described QI invigorating enthalpy compressor.
The invention has the beneficial effects as follows:
1, present configuration is simple, can realize not shutting down switching under each pattern, it is to avoid because of the series of problems that the frequent start-stop of system brings, expand unit and use scope.By the application of QI invigorating enthalpy compressor Yu economizer, improve capacity, increase and heat side ability, the supercool degree of supercooling that improve refrigerant liquid of economizer, increase the exchange capability of heat of refrigeration side.By traditional refrigeration, heat two choke valves and be simplified to a main road electric expansion valve, optimize system design, reduce system incipient fault rate.The QI invigorating electric expansion valve that device is arranged, controls logic by it, can improve systematic function, improve press operating condition, extends unit service life.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is three-way valve structural representation of the present invention.
Fig. 3 is cross valve structural representation of the present invention.
Description of reference numerals: 1-QI invigorating enthalpy compressor;2-three-way solenoid valve;3-solenoid operated four-way valve;4-total heat recovery device;5-finned heat exchanger;6-check valve;7-reservoir;8-filter;9-economizer;10-QI invigorating electric expansion valve;11-main road electric expansion valve;12-heats normally closed solenoid valve;13-freezes normally closed solenoid valve;14-case tube heat exchanger;15-gas-liquid separator;21,31-small slide bowl;22,32-slide block.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is expanded on further, it should be appreciated that these embodiments are merely to illustrate the present invention rather than restriction the scope of the present invention.In addition, it is to be understood that after having read the content that the present invention lectures, the present invention can be made various changes or modifications by those skilled in the art, these equivalent form of values also fall within application appended claims limited range.
nullIt is overall structure schematic diagram of the present invention referring to Fig. 1,This structure one ultralow temperature total heat recovery Air-Cooled Heat Pump Unit,Including QI invigorating enthalpy compressor 1、Three-way solenoid valve 2、Solenoid operated four-way valve 3、Total heat recovery device 4、Finned heat exchanger 5、Check valve 6、Reservoir 7、Filter 8、Economizer 9、QI invigorating electric expansion valve 10、Main road electric expansion valve 11、Heat normally closed solenoid valve 12、Refrigeration normally closed solenoid valve 13、Case tube heat exchanger 14、Gas-liquid separator 15,The import of reservoir 7 respectively with total heat recovery device 4、Finned heat exchanger 5、Case tube heat exchanger 14 is connected,The outlet of reservoir 7 is connected with filter 8,Filter 8 respectively with economizer 9 main road import H1、QI invigorating electric expansion valve 10 is connected,Economizer 9 main road outlet H2 is connected with main road electric expansion valve 11,QI invigorating electric expansion valve 10 is connected with economizer 9 QI invigorating import G1,Economizer 9 QI invigorating outlet G2 is connected with pressing mouth F1 in QI invigorating enthalpy compressor 1,Main road electric expansion valve 11 and refrigeration normally closed solenoid valve 13、Heat normally closed solenoid valve 12 to be connected,Refrigeration normally closed solenoid valve 13 and case tube heat exchanger 14、Check valve 6 is connected,Heat normally closed solenoid valve 12 and finned heat exchanger 5、Check valve 6 is connected.
The D1 mouth of three-way solenoid valve 2 is connected with the air vent A1 of QI invigorating enthalpy compressor 1, the C1 mouth of three-way solenoid valve 2 is connected with total heat recovery device 4, the E1 mouth of three-way solenoid valve 2 is connected with the D2 mouth of solenoid operated four-way valve 3, the E2 mouth of solenoid operated four-way valve 3 is connected with case tube heat exchanger 14, the C2 mouth of solenoid operated four-way valve 3 is connected with finned heat exchanger 5, the S2 mouth of solenoid operated four-way valve 3 is connected with the import of gas-liquid separator 15, and gas-liquid separator 15 outlet is connected with the air entry B1 of QI invigorating enthalpy compressor 1.
Being both provided with check valve 6 between reservoir 7 and total heat recovery device 4, finned heat exchanger 5, case tube heat exchanger 14, check valve 6 includes first check valve the 6, second check valve the 6, the 3rd check valve 6;The entrance point of the first check valve 6 is connected with finned heat exchanger 5, and the port of export of the first check valve 6 is connected with the entrance point of reservoir 7;The entrance point of the second check valve 6 is connected with case tube heat exchanger 14, and the port of export of the second check valve 6 is connected with the entrance point of reservoir 7;The entrance point of the 3rd check valve 6 is connected with total heat recovery device 4, and the port of export of the 3rd check valve 6 is connected with the entrance point of reservoir 7.Case tube heat exchanger 14 is dry evaporator;Finned heat exchanger 5 is air cooled condenser.
The operation principle of the present invention is such that
When being in refrigeration mode, the E1 mouth of the D1 mouth of described three-way solenoid valve 2 and described three-way solenoid valve 2 turns on, the C2 mouth of the D2 mouth of described solenoid operated four-way valve 3 and described solenoid operated four-way valve 3 turns on, the E2 mouth of the S2 mouth of described solenoid operated four-way valve 3 and described solenoid operated four-way valve 3 turns on, and described refrigeration normally closed solenoid valve 13 turns on.nullThe high-temperature high-pressure refrigerant gas that QI invigorating enthalpy compressor 1 is discharged is through three-way solenoid valve 2、Solenoid operated four-way valve 3 enters finned heat exchanger 5,Refrigerant liquid is become after condensation,Reservoir 7 is entered then through the first check valve 6,It is divided into two-way after filter 8,The refrigerant liquid of main road is directly entered the H1 mouth of economizer 9,The refrigerant liquid of bypass becomes after first passing through QI invigorating electric expansion valve 10 reducing pressure by regulating flow after gas-liquid mixture also in economizer 9,The two produces heat exchange in economizer 9,Gas is become from the G1 mouth of economizer 9 out after the refrigerant liquid heat absorption of bypass,Sucked by the F1 mouth of QI invigorating enthalpy compressor 1,The cold-producing medium heat release of main road becomes subcooled liquid from the H2 mouth of economizer 9 out,After main road electric expansion valve 11 reducing pressure by regulating flow,Case tube heat exchanger 14 is entered through refrigeration normally closed solenoid valve 13.In case tube heat exchanger 14, the heat of the refrigerant suction water of main road and become low-pressure gas, enter gas-liquid separator 15 through solenoid operated four-way valve 3, finally sucked by the air entry B1 of QI invigorating enthalpy compressor 1.The cold-producing medium of main road and bypass mixes at compressor operating intracavity, further discharges after compression, constitutes the cycle of operation loop closed.
When being in heating mode, the E1 mouth of the D1 mouth of described three-way solenoid valve 2 and described three-way solenoid valve 2 turns on, the E2 mouth of the D2 mouth of described solenoid operated four-way valve 3 and described solenoid operated four-way valve 3 turns on, the C2 mouth of the S2 mouth of described solenoid operated four-way valve 3 and described solenoid operated four-way valve 3 turns on, described in heat normally closed solenoid valve 12 and turn on.nullThe high-temperature high-pressure refrigerant gas that QI invigorating enthalpy compressor 1 is discharged is through three-way solenoid valve 2、Solenoid operated four-way valve 3 enters case tube heat exchanger 14,Refrigerant liquid is become after condensation,Reservoir 7 is entered then through the second check valve 6,It is divided into two-way after filter 8,The refrigerant liquid of main road is directly entered the H1 mouth of economizer 9,The refrigerant liquid of bypass becomes after first passing through QI invigorating electric expansion valve 10 reducing pressure by regulating flow after gas-liquid mixture also in economizer 9,The two produces heat exchange in economizer 9,Gas is become from the G1 mouth of economizer 9 out after the refrigerant liquid heat absorption of bypass,Sucked by the F1 mouth of QI invigorating enthalpy compressor 1,The cold-producing medium heat release of main road becomes subcooled liquid from the H2 mouth of economizer 9 out,After main road electric expansion valve 11 reducing pressure by regulating flow,Finned heat exchanger 5 is entered through heating normally closed solenoid valve 12.In finned heat exchanger 5, the heat of the refrigerant suction environment of main road and become low-pressure gas, enter gas-liquid separator 15 through solenoid operated four-way valve 3, finally sucked by the air entry B1 of QI invigorating enthalpy compressor 1.The cold-producing medium of main road and bypass mixes at compressor operating intracavity, further discharges after compression, constitutes the cycle of operation loop closed.
When being in water heater pattern, the C1 mouth of the D1 mouth of described three-way solenoid valve 2 and described three-way solenoid valve 2 turns on, the E2 mouth of the D2 mouth of described solenoid operated four-way valve 3 and described solenoid operated four-way valve 3 turns on, the C2 mouth of the S2 mouth of described solenoid operated four-way valve 3 and described solenoid operated four-way valve 3 turns on, described in heat normally closed solenoid valve 12 and turn on.nullThe high-temperature high-pressure refrigerant gas that QI invigorating enthalpy compressor 1 is discharged enters total heat recovery device 4 through three-way solenoid valve 2,Refrigerant liquid is become after condensation,Reservoir 7 is entered then through the 3rd check valve 6,It is divided into two-way after filter 8,The refrigerant liquid of main road is directly entered the H1 mouth of economizer 9,The refrigerant liquid of bypass becomes after first passing through QI invigorating electric expansion valve 10 reducing pressure by regulating flow after gas-liquid mixture also in economizer 9,The two produces heat exchange in economizer 9,Gas is become from the G1 mouth of economizer 9 out after the refrigerant liquid heat absorption of bypass,Sucked by the F1 mouth of QI invigorating enthalpy compressor 1,The cold-producing medium heat release of main road becomes subcooled liquid from the H2 mouth of economizer 9 out,After main road electric expansion valve 11 reducing pressure by regulating flow,Finned heat exchanger 5 is entered through heating normally closed solenoid valve 12.In finned heat exchanger 5, the heat of the refrigerant suction environment of main road and become low-pressure gas, enter gas-liquid separator 15 through solenoid operated four-way valve 3, finally sucked by the air entry B1 of QI invigorating enthalpy compressor 1.The cold-producing medium of main road and bypass mixes at compressor operating intracavity, further discharges after compression, constitutes the cycle of operation loop closed.
When being in refrigeration heat recovery mode, the C1 mouth of the D1 mouth of described three-way solenoid valve 2 and described three-way solenoid valve 2 turns on, the C2 mouth of the D2 mouth of described solenoid operated four-way valve 3 and described solenoid operated four-way valve 3 turns on, the E2 mouth of the S2 mouth of described solenoid operated four-way valve 3 and described solenoid operated four-way valve 3 turns on, and described refrigeration normally closed solenoid valve 13 turns on.nullThe high-temperature high-pressure refrigerant gas that QI invigorating enthalpy compressor 1 is discharged enters total heat recovery device 4 through three-way solenoid valve 2,Refrigerant liquid is become after condensation,Reservoir 7 is entered then through the 3rd check valve 6,It is divided into two-way after filter 8,The refrigerant liquid of main road is directly entered the H1 mouth of economizer 9,The refrigerant liquid of bypass first passes through QI invigorating electric expansion valve 10 reducing pressure by regulating flow and becomes after gas-liquid mixture also in economizer 9,The two produces heat exchange in economizer 9,Gas is become from the G1 mouth of economizer 9 out after the refrigerant liquid heat absorption of bypass,Sucked by the F1 mouth of QI invigorating enthalpy compressor 1,The cold-producing medium heat release of main road becomes subcooled liquid from the H2 mouth of economizer 9 out,After main road electric expansion valve 11 reducing pressure by regulating flow,Case tube heat exchanger 14 is entered through refrigeration normally closed solenoid valve 13.In case tube heat exchanger 14, the heat of the refrigerant suction water of main road and become low-pressure gas, enter gas-liquid separator 15 through solenoid operated four-way valve 3, finally sucked by the air entry B1 of QI invigorating enthalpy compressor 1.The cold-producing medium of main road and bypass mixes at compressor operating intracavity, further discharges after compression, constitutes the cycle of operation loop closed.
When the refrigeration defrosting being under heating mode or water heater pattern, the E1 mouth of the D1 mouth of described three-way solenoid valve 2 and described three-way solenoid valve 2 turns on, the C2 mouth of the D2 mouth of described solenoid operated four-way valve 3 and described solenoid operated four-way valve 3 turns on, the E2 mouth of the S2 mouth of described solenoid operated four-way valve 3 and described solenoid operated four-way valve 3 turns on, and described refrigeration normally closed solenoid valve 13 turns on.First running according to heating mode, after completing to satisfy condition, be switched to water heater pattern, flow process is identical with water heater pattern.
nullWater heater pattern、Refrigeration defrosting under heating mode: the high-temperature high-pressure refrigerant gas that QI invigorating enthalpy compressor 1 is discharged is through three-way solenoid valve 2、Solenoid operated four-way valve 3 enters finned heat exchanger 5,Refrigerant liquid is become after condensation,Reservoir 7 is entered then through the first check valve 6,It is divided into two-way after filter 8,The refrigerant liquid of main road is directly entered the H1 mouth of economizer 9,The refrigerant liquid of bypass becomes after first passing through QI invigorating electric expansion valve 10 reducing pressure by regulating flow after gas-liquid mixture also in economizer 9,The two produces heat exchange in economizer 9,Gas is become from the G1 mouth of economizer 9 out after the refrigerant liquid heat absorption of bypass,Sucked by the F1 mouth of QI invigorating enthalpy compressor 1,The cold-producing medium heat release of main road becomes subcooled liquid from the H2 mouth of economizer 9 out,After main road electric expansion valve 11 reducing pressure by regulating flow,Case tube heat exchanger 14 is entered through refrigeration normally closed solenoid valve 13.In case tube heat exchanger 14, the heat of the refrigerant suction water of main road and become low-pressure gas, enter gas-liquid separator 15 through solenoid operated four-way valve 3, finally sucked by the air entry B1 of QI invigorating enthalpy compressor 1.The cold-producing medium of main road and bypass mixes at compressor operating intracavity, further discharges after compression, completes defrosting process.
It is three-way valve structural representation of the present invention referring to Fig. 2, it is cross valve structural representation of the present invention referring to Fig. 3, on three-way solenoid valve, 2 are provided with small slide bowl 21, slide block 22, solenoid operated four-way valve 3 is provided with small slide bowl 31, slide block 32, the pilot pipe b of three-way solenoid valve 2 is connected with the B1 mouth of QI invigorating enthalpy compressor 1, ensure that pilot pipe b pressure under each operating mode is low pressure always, make small slide bowl 21 be quickly completed when switching, it is ensured that three-way solenoid valve 2 normally switches.The pilot pipe d1 of solenoid operated four-way valve 3 is connected with the A1 mouth of QI invigorating enthalpy compressor 1, it is ensured that pilot pipe d1 pressure under each operating mode is high pressure always, provides high voltage power to solenoid operated four-way valve 3, makes solenoid operated four-way valve 3 normally to switch.
By the application of QI invigorating enthalpy compressor 1 with economizer 9 in the present invention, improve capacity, increase the side ability that heats, the supercool degree of supercooling that improve refrigerant liquid of economizer 9, increase the exchange capability of heat of refrigeration side, improve unit performance.By traditional refrigeration, heat two choke valves and be simplified to a main road electric expansion valve 11, optimize system design, reduce system incipient fault rate.The QI invigorating electric expansion valve 10 that device is arranged, controls logic by it, can improve systematic function, improve press operating condition, extends unit service life.

Claims (6)

  1. null1. a ultralow temperature total heat recovery Air-Cooled Heat Pump Unit,It is characterized in that: it includes QI invigorating enthalpy compressor、Three-way solenoid valve、Solenoid operated four-way valve、Total heat recovery device、Finned heat exchanger、Check valve、Reservoir、Filter、Economizer、QI invigorating electric expansion valve、Main road electric expansion valve、Heat normally closed solenoid valve、Refrigeration normally closed solenoid valve、Case tube heat exchanger、Gas-liquid separator,The import of described reservoir respectively with total heat recovery device、Finned heat exchanger、Case tube heat exchanger is connected,The outlet of described reservoir is connected with filter,Described filter respectively with economizer main road import H1、QI invigorating electric expansion valve is connected,Described economizer main road outlet H2 is connected with main road electric expansion valve,Described QI invigorating electric expansion valve is connected with economizer QI invigorating import G1,Described economizer QI invigorating outlet G2 is connected with pressing mouth F1 in QI invigorating enthalpy compressor,Described main road electric expansion valve and refrigeration normally closed solenoid valve、Heat normally closed solenoid valve to be connected,Described refrigeration normally closed solenoid valve and case tube heat exchanger、Check valve is connected,Described heat normally closed solenoid valve and finned heat exchanger、Check valve is connected;
    The D1 mouth of described three-way solenoid valve is connected with the air vent A1 of QI invigorating enthalpy compressor, the C1 mouth of described three-way solenoid valve is connected with total heat recovery device, the E1 mouth of described three-way solenoid valve is connected with the D2 mouth of solenoid operated four-way valve, the E2 mouth of described solenoid operated four-way valve is connected with case tube heat exchanger, the C2 mouth of described solenoid operated four-way valve is connected with finned heat exchanger, the S2 mouth of described solenoid operated four-way valve is connected with the import of gas-liquid separator, and the outlet of described gas-liquid separator is connected with the air entry B1 of QI invigorating enthalpy compressor.
  2. 2. a kind of ultralow temperature total heat recovery Air-Cooled Heat Pump Unit according to claim 1, it is characterized in that: be both provided with check valve between described reservoir and total heat recovery device, finned heat exchanger, case tube heat exchanger, described check valve includes the first check valve, the second check valve, the 3rd check valve;The entrance point of described first check valve is connected with described finned heat exchanger, and the port of export of described first check valve is connected with the entrance point of described reservoir;The entrance point of described second check valve is connected with described case tube heat exchanger, and the port of export of described second check valve is connected with the entrance point of described reservoir;The entrance point of described 3rd check valve is connected with described total heat recovery device, and the described port of export of the 3rd check valve is connected with the entrance point of described reservoir.
  3. 3. a kind of ultralow temperature total heat recovery Air-Cooled Heat Pump Unit according to claim 1, it is characterised in that: described case tube heat exchanger is dry evaporator.
  4. 4. a kind of ultralow temperature total heat recovery Air-Cooled Heat Pump Unit according to claim 1, it is characterised in that: described finned heat exchanger is air cooled condenser.
  5. 5. a kind of ultralow temperature total heat recovery Air-Cooled Heat Pump Unit according to claim 1, it is characterised in that: the pilot pipe b of described three-way solenoid valve is connected with the B1 air entry of described QI invigorating enthalpy compressor.
  6. 6. a kind of ultralow temperature total heat recovery Air-Cooled Heat Pump Unit according to claim 1, it is characterised in that: the pilot pipe d1 of described solenoid operated four-way valve is connected with the A1 air vent of described QI invigorating enthalpy compressor.
CN201610290720.5A 2016-05-05 2016-05-05 Ultralow temperature total heat recovery air-cooling heat pump unit Pending CN105758055A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102889708A (en) * 2011-07-17 2013-01-23 陈则韶 Two-source heat pump multi-function machine
CN203771637U (en) * 2014-04-02 2014-08-13 深圳麦克维尔空调有限公司 Low-temperature total heat recovery device
CN105444465A (en) * 2014-08-29 2016-03-30 大连旺兴新能源科技有限公司 Ultralow temperature heat pump refrigeration heat recovery and heat accumulation heating system
CN205580024U (en) * 2016-05-05 2016-09-14 山东现代莱恩空调设备有限公司 Full heat recovery air cooled heat pump unit of ultra -low temperature

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102889708A (en) * 2011-07-17 2013-01-23 陈则韶 Two-source heat pump multi-function machine
CN203771637U (en) * 2014-04-02 2014-08-13 深圳麦克维尔空调有限公司 Low-temperature total heat recovery device
CN105444465A (en) * 2014-08-29 2016-03-30 大连旺兴新能源科技有限公司 Ultralow temperature heat pump refrigeration heat recovery and heat accumulation heating system
CN205580024U (en) * 2016-05-05 2016-09-14 山东现代莱恩空调设备有限公司 Full heat recovery air cooled heat pump unit of ultra -low temperature

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