CN106766332A - Air-conditioning system unit and air-conditioning system - Google Patents

Air-conditioning system unit and air-conditioning system Download PDF

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Publication number
CN106766332A
CN106766332A CN201611185047.5A CN201611185047A CN106766332A CN 106766332 A CN106766332 A CN 106766332A CN 201611185047 A CN201611185047 A CN 201611185047A CN 106766332 A CN106766332 A CN 106766332A
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CN
China
Prior art keywords
subsystem
bypass
economizer
heat exchanger
inlet pipe
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Granted
Application number
CN201611185047.5A
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Chinese (zh)
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CN106766332B (en
Inventor
魏峰
赖瑜
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to CN201611185047.5A priority Critical patent/CN106766332B/en
Publication of CN106766332A publication Critical patent/CN106766332A/en
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Publication of CN106766332B publication Critical patent/CN106766332B/en
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Classifications

    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02742—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using two four-way 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/029—Control issues
    • 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
    • F25B2347/00—Details for preventing or removing deposits or corrosion
    • F25B2347/02—Details of defrosting cycles
    • 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
    • F25B2400/13—Economisers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The invention provides a kind of air-conditioning system unit and air-conditioning system.Air-conditioning system unit of the invention, including the first subsystem and the second subsystem；Wherein, the first subsystem includes being interconnected to form the first compressor, the first outdoor heat exchanger, first indoor heat exchanger and for the first economizer to the first compressor Gas-supplying enthalpy-increasing of the first compression circulation；Second subsystem includes being interconnected to form the second compressor, the second outdoor heat exchanger, second indoor heat exchanger and for the second economizer to the second compressor Gas-supplying enthalpy-increasing of the second compression circulation；Air-conditioning system unit also includes：Selectively make the bypass of the second economizer access the first compression to circulate so that the refrigerant of the first compression circulation is no longer pass through the first defrost pipeline of the first indoor heat exchanger；And, the bypass of the first economizer is accessed the second compression and circulate so that the refrigerant of the second compression circulation is no longer pass through the second defrost pipeline of the second indoor heat exchanger.Continuous heating during present invention defrosting.

Description

Air-conditioning system unit and air-conditioning system
Technical field
The present invention relates to field of air conditioning, in particular to a kind of air-conditioning system unit and air-conditioning system.
Background technology
Air-cooled heat pump water chiller-heater units as central air conditioner system Cooling and Heat Source, because its is easy for installation, operation operation letter The features such as list, energy-conservation and the integrated modularization that is easy to, considerable progress has been obtained in recent years, it is constantly widened using scope.Commonly The minimum environment temperature of major part heating operation is -15 DEG C to air-cooled heat pump water chiller-heater units at present, in order to widen air-cooled air-source heat The range of operation of heat pump heating, more using air injection enthalpy-increasing technology.Using the air-cooled heat pump water chiller-heater units heating operation of air injection enthalpy-increasing Minimum reachable -25 DEG C~-30 DEG C of scope.
Air injection enthalpy-increasing air-cooled heat pump water chiller-heater units evaporation side finned heat exchanger when heating in winter is easy with air heat-exchange In fin surface frosting, heat exchange efficiency of fins is influenceed, so as to influence unit capacity and reliability operation.Four-way is generally utilized at present The reverse cycle defrosting of valve commutation, but defrosting process needs absorb heat from water side, stopping are heated during defrosting, it is impossible to continuous heating, Fluctuating temperature is very big, has a strong impact on user's usage comfort.When air injection enthalpy-increasing air-cooled heat pump water chiller-heater units still do not solve defrosting The problem of continuous heating.
The content of the invention
The present invention is intended to provide it is a kind of can during defrost continuous heating air-conditioning system unit and air-conditioning system.
The invention provides a kind of air-conditioning system unit, including the first subsystem and the second subsystem；Wherein, the first subsystem System includes being interconnected to form the first compressor, the first outdoor heat exchanger, the first indoor heat exchanger and the use of the first compression circulation In the first economizer to the first compressor Gas-supplying enthalpy-increasing；Second subsystem includes being interconnected to form the of the second compression circulation Two compressors, the second outdoor heat exchanger, the second indoor heat exchanger and for the second economizer to the second compressor Gas-supplying enthalpy-increasing； Air-conditioning system unit also includes：Selectively make the bypass of the second economizer access the first compression to circulate so that the first compression circulation Refrigerant be no longer pass through the first defrost pipeline of the first indoor heat exchanger；And, selectively connect the bypass of the first economizer Enter the second compression to circulate so that the refrigerant of the second compression circulation is no longer pass through the second defrost pipeline of the second indoor heat exchanger.
Further, the first compression circulation has first be located between the first outdoor heat exchanger and the first indoor heat exchanger Contact and the second contact；Second compression circulation has the be located between the second outdoor heat exchanger and the second indoor heat exchanger the 3rd to connect Point and the 4th contact；The inlet pipe of the first economizer includes that import contact, the port of export heat import with import contact is connected respectively Main road inlet pipe and bypass inlet pipe that branch pipe and refrigeration entrance branch and entrance point are connected with import contact respectively；Wherein, heat The entrance point of entrance branch is connected with the first contact, and the entrance point of the entrance branch that freezes is connected with the second contact, main road inlet pipe The port of export is connected with the entrance point of the main road of the first economizer, and the bypass import of the port of export of bypass inlet pipe and the first economizer connects Connect, and bypass throttling arrangement has been arranged in series on bypass inlet pipe；The outlet pipe of the main road of the first economizer include outlet supervisor and with What outlet supervisor connected heats outlet stool and refrigeration outlet stool, wherein, heat the port of export and the second contact of outlet stool Connection, the port of export of the outlet stool that freezes is connected with the first contact, and outlet supervisor has been arranged in series main road throttling arrangement, heats Check valve has been arranged in series respectively on outlet stool and refrigeration outlet stool；The inlet pipe of the second economizer includes import contact, goes out What mouthful end be connected with import contact respectively heat entrance branch and freeze entrance branch and entrance point respectively with import contact company The main road inlet pipe and bypass inlet pipe for connecing；Wherein, the entrance point for heating entrance branch is connected with the 3rd contact, refrigeration entrance branch Entrance point is connected with the 4th contact, and the port of export of main road inlet pipe is connected with the entrance point of the main road of the second economizer, bypass inlet pipe The port of export be connected with the bypass import of the second economizer, and bypass throttling arrangement has been arranged in series on bypass inlet pipe；Second warp Help device main road outlet pipe include outlet supervisor and with outlet supervisor be connected heat outlet stool and freeze outlet stool, its In, the port of export for heating outlet stool is connected with the 4th contact, and the port of export of the outlet stool that freezes is connected with the 3rd contact, and goes out Mouth supervisor has been arranged in series main road throttling arrangement, heats and has been arranged in series respectively unidirectionally on outlet stool and refrigeration outlet stool Valve.
Further, the first defrost pipeline includes the first inlet pipe and the first outlet pipe, wherein, the entrance point of the first inlet pipe and the The port of export of the main road throttling arrangement of one economizer is connected by controlling valve, and the port of export of the first inlet pipe is auxiliary with the second economizer The entrance point connection on road；The entrance point of the first outlet pipe is connected with the port of export of the bypass of the second economizer by controlling valve, and first The port of export of outlet pipe is connected between the first indoor heat exchanger and the first compressor by controlling valve；Second defrost pipeline includes the Two inlet pipes and the second outlet pipe, wherein, the entrance point of the second inlet pipe passes through with the port of export of the main road throttling arrangement of the second economizer Control valve connection, the port of export of the second inlet pipe is connected with the entrance point of the bypass of the first economizer；The entrance point of the second outlet pipe with The port of export of the bypass of the first economizer is connected by controlling valve, and the port of export of the second outlet pipe is connected to second Room by controlling valve Between interior heat exchanger and the second compressor.
Further, the control positioned at bypass throttling arrangement upstream is also arranged in series on the bypass inlet pipe of the first economizer Valve；The control valve positioned at bypass throttling arrangement upstream is also arranged in series on the bypass inlet pipe of the second economizer；First defrost pipe Road includes the first inlet pipe and the first outlet pipe, wherein, the entrance point of the first inlet pipe passes through with the refrigeration entrance branch of the first economizer Control valve connection, the port of export of the first inlet pipe be connected to the bypass throttling arrangement of the bypass inlet pipe of the second economizer and control valve it Between, the entrance point of the first outlet pipe is connected with the port of export of the bypass of the second economizer by controlling valve, the port of export of the first outlet pipe It is connected between the first indoor heat exchanger and the first compressor by controlling valve；Second defrost pipeline includes the second inlet pipe and second Outlet pipe, wherein, the entrance point of the second inlet pipe is connected with the refrigeration entrance branch of the second economizer by controlling valve, the first inlet pipe The port of export is connected between the bypass throttling arrangement of the bypass inlet pipe of the first economizer and control valve；The entrance point of the second outlet pipe with The port of export of the bypass of the first economizer is connected by controlling valve, and the port of export of the second outlet pipe is connected to second Room by controlling valve Between interior heat exchanger and the second compressor.
Further, it is three-way control valve or two logical control valves to control valve.
Further, the first indoor heat exchanger and the second indoor heat exchanger are integrated into an integrated heat exchanger, integrated heat exchange There is the first refrigerant inlet and the first refrigerant exit that access the first compression circulation on device and the of the second compression circulation is accessed Two refrigerant inlets and the second refrigerant exit.
Present invention also offers a kind of air-conditioning system, including at least one foregoing air-conditioning system unit.
Further, the indoor heat exchanger of all air-conditioning system units is integrated into a total heat exchanger.
Air-conditioning system unit of the invention and air-conditioning system, the first subsystem and the difference defrost of the second subsystem, the During one subsystem defrost, the bypass of the second economizer is set to access the first compression circulation so that first by the first defrost pipeline The refrigerant for compressing circulation is no longer pass through the first indoor heat exchanger, and the second subsystem is normally heated；Second subsystem defrost process is anti- It；So as to ensure whole air-conditioning system unit continuous heating, reduce fluctuating temperature, improve user's usage comfort.
Brief description of the drawings
The accompanying drawing for constituting the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention Apply example and its illustrate, for explaining the present invention, not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the principle schematic of the first embodiment of air-conditioning system unit of the invention；
Fig. 2 is the principle schematic of the second embodiment of air-conditioning system unit of the invention；
Fig. 3 is the principle schematic of the 3rd embodiment of air-conditioning system unit of the invention；
Fig. 4 is the principle schematic of the fourth embodiment of air-conditioning system unit of the invention；
Fig. 5 is the principle schematic of the 5th embodiment of air-conditioning system unit of the invention.
Specific embodiment
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in Fig. 1 to 5, air-conditioning system unit of the invention, including the first subsystem and the second subsystem；Its In, the first subsystem includes being interconnected to form the first compressor of the first compression circulation, the first outdoor heat exchanger, the first interior Heat exchanger and for the first economizer to the first compressor Gas-supplying enthalpy-increasing；Second subsystem includes being interconnected to form the second pressure Contract the second compressor, the second outdoor heat exchanger, second indoor heat exchanger and for the second compressor Gas-supplying enthalpy-increasing of circulation Second economizer；Air-conditioning system unit also includes：Selectively make the second economizer bypass access first compression circulate so that The refrigerant of the first compression circulation is no longer pass through the first defrost pipeline of the first indoor heat exchanger；And, selectively make the first warp The bypass of Ji device accesses the second compression and circulates so that the refrigerant that the second compression is circulated is no longer pass through the second of the second indoor heat exchanger Defrost pipeline.Air-conditioning system unit of the invention and air-conditioning system, the first subsystem and the difference defrost of the second subsystem, the During one subsystem defrost, the bypass of the second economizer is set to access the first compression circulation so that first by the first defrost pipeline The refrigerant for compressing circulation is no longer pass through the first indoor heat exchanger, and the second subsystem is normally heated；Second subsystem defrost process is anti- It；Namely when a subsystem defrosts, another subsystem is heated.Subsystem economizer is heated as defroster subsystem Evaporator, defroster subsystem defrost heat heats subsystem high-temperature liquid state refrigerant mistake from itself compressor work with another The heat released when cold, heats subsystem and defroster subsystem realizes energy complement so as to rationally utilize system capacity.System defrosts Shi Bucong indoor heat exchangers absorb heat, so as to ensure whole air-conditioning system unit continuous heating, reduce fluctuating temperature, improve and use Family usage comfort.
It should be noted that in the present invention, outdoor heat exchanger and indoor heat exchanger are only functionally stated, indoor heat exchange Device should be understood to the heat exchanger to indoor effect (freeze or heat), and outdoor heat exchanger is also understood to outdoor heat absorption Or the heat exchanger of radiating, specific installation site is not referred to singly indoors or outdoor.It is cold and hot in small-sized family expenses air-cooled heat pump In water dispenser group or air-conditioning, indoor heat exchanger is disposed in the interior, and outdoor heat exchanger is disposed in the outdoor.But due to large commercial wind Cold-heat pump water chiller-heater unit is generally integrated machine, integral installation in outdoor, regardless of indoor and outdoor from installation site, thus, In large commercial air-cooled heat pump water chiller-heater units, air side heat exchanger correspondence outdoor heat exchanger is changed in water-side heat respective chamber/chambers Hot device, water-side heat passes through hot and cold water pipeline and indoor heat exchange, so as to indoor cooling and warming.
Specifically, with reference to shown in Fig. 4 and Fig. 5, the first compression circulation has indoor positioned at the first outdoor heat exchanger and first The first contact a and the second contact b between heat exchanger；Second compression circulation has in the second outdoor heat exchanger with second Room The 3rd contact d and the 4th contact e between heat exchanger；The inlet pipe of the first economizer include import contact c, the port of export respectively with enter Mouthful contact c connections heat entrance branch and main road that freeze entrance branch and entrance point are connected with import contact respectively enters Pipe and bypass inlet pipe；Wherein, the entrance point for heating entrance branch is connected with the first contact a, freeze entrance branch entrance point with Second contact b is connected, and the port of export of main road inlet pipe is connected with the entrance point of the main road of the first economizer, the port of export of bypass inlet pipe It is connected with the bypass import of the first economizer, and bypass throttling arrangement has been arranged in series on bypass inlet pipe；The master of the first economizer What the outlet pipe on road was connected including outlet supervisor and with outlet supervisor heats outlet stool and the outlet stool that freezes, wherein, heat out The port of export of mouth branch pipe is connected with the second contact b, and the port of export of the outlet stool that freezes is connected with the first contact a, and outlet supervisor Main road throttling arrangement is arranged in series, have been heated and be arranged in series check valve respectively on outlet stool and refrigeration outlet stool；Second The inlet pipe of economizer heats entrance branch and refrigeration import branch including what import contact f, the port of export were connected with import contact f respectively Main road inlet pipe and bypass inlet pipe that pipe and entrance point are connected with import contact f respectively；Wherein, the import of entrance branch is heated End is connected with the 3rd contact d, and the entrance point of the entrance branch that freezes is connected with the 4th contact e, the port of export of main road inlet pipe and second The entrance point connection of the main road of economizer, the port of export of bypass inlet pipe is connected with the bypass import of the second economizer, and bypass enters Bypass throttling arrangement has been arranged in series on pipe；The outlet pipe of the main road of the second economizer includes outlet supervisor and is connected with outlet supervisor Heat outlet stool and refrigeration outlet stool, wherein, the port of export for heating outlet stool is connected with the 4th contact e, freezes and The port of export of mouthful branch pipe be connected with the 3rd contact d, and exports supervisor and be arranged in series main road throttling arrangement, heat outlet stool with Check valve has been arranged in series respectively on refrigeration outlet stool.
It should be noted that as depicted in figs. 1 and 2, in the present invention, the first indoor heat exchanger and the second indoor heat exchanger An integrated heat exchanger can be integrated into, there is the first refrigerant inlet and first for accessing the first compression circulation on integrated heat exchanger Refrigerant exit and second refrigerant inlet and the second refrigerant exit of the compression circulation of access second.Two subsystems are made to share one Individual indoor heat exchanger, compared to the mode that two subsystems are respectively adopted indoor heat exchanger in Fig. 4 and Fig. 5, can solve the problem that defrost The corresponding indoor heat exchanger of subsystem does not have the problem that heat is input into, namely during defrost, heats subsystem to two subsystems Indoor heat exchanger heat supply altogether such that it is able to more effectively reduce the temperature wave of the indoor of whole air-conditioning system unit It is dynamic, it is ensured that continuous heating, improve comfortableness.
With reference to Fig. 1 to 5, various embodiments of the present invention are illustrated by taking large commercial air-cooled heat pump water chiller-heater units as an example Concrete operating principle.
In the first embodiment systematic schematic diagram shown in Fig. 1.In Fig. 1 11 for the first subsystem compressor, 1101 be the The compressor air suction of one subsystem mouthful, 1102 for the first subsystem exhaust outlet of compressor, 1103 be the compression of the first subsystem Machine gas supplementing opening；12 is the four-way valve of the first subsystem；13 is the first triple valve of the first subsystem；04 is system water-side heat (indoor heat exchanger, two subsystems share), 0401 for the first subsystem connection water-side heat gas tube orifice, 0402 be the The connection water-side heat liquid pipe mouthful of one subsystem；15 is the first check valve of the first subsystem；16 is the warp of the first subsystem Ji device, 1601 for the first subsystem economizer main road entrance, 1602 for the first subsystem the outlet of economizer main road, 1603 be The economizer bypass entrance of the first subsystem, 1604 are the economizer bypass outlet of the first subsystem；17 is the first subsystem Main road choke valve；18 is the bypass choke valve of the first subsystem；19 is the second triple valve of the first subsystem；110 is the first son 3rd triple valve of system；111 is the second check valve of the first subsystem；112 is the 3rd check valve of the first subsystem；113 It is the 4th check valve of the first subsystem；114 for the first subsystem wind side finned heat exchanger (outdoor heat exchanger), 11401 be The wind side finned heat exchanger gas tube orifice of the first subsystem, 11402 are the wind side finned heat exchanger liquid pipe mouthful of the first subsystem；115 For the first subsystem gas-liquid separator, 11501 for the first subsystem gas-liquid separator entrance, 11502 be the first subsystem Gas-liquid separator outlet.116 is the 5th check valve of the first subsystem.
Similarly, in Fig. 1 21 for the second subsystem compressor, 2101 for the second subsystem compressor air suction mouthful, 2102 for the second subsystem exhaust outlet of compressor, 2103 for the second subsystem compressor gas supplementing opening；22 is the second subsystem Four-way valve；23 is the first triple valve of the second subsystem；04 is system water-side heat (indoor heat exchanger, two subsystems Altogether use), 0403 be connection water-side heat gas tube orifice, 0404 of the second subsystem for the connection water side of the second subsystem exchanges heat Device liquid pipe mouthful；25 is the first check valve of the second subsystem；26 is economizer, 2601 of the second subsystem for the second subsystem Economizer main road entrance, 2602 for the second subsystem economizer main road outlet, 2603 for the second subsystem economizer bypass Entrance, 2604 are the economizer bypass outlet of the second subsystem；27 is the main road choke valve of the second subsystem；28 is the second subsystem The bypass choke valve of system；29 is the second triple valve of the second subsystem；210 is the 3rd triple valve of the second subsystem；211 is Second check valve of two subsystems；212 is the 3rd check valve of the second subsystem；213 is the 4th check valve of the second subsystem； 214 for the second subsystem wind side finned heat exchanger, 21401 be wind side finned heat exchanger gas tube orifice, 21402 of the second subsystem It is the wind side finned heat exchanger liquid pipe mouthful of the second subsystem；215 for the second subsystem gas-liquid separator, 21501 be second son The gas-liquid separator entrance of system, 21502 are the gas-liquid separator outlet of the second subsystem.216 is the 5th of the second subsystem Check valve.
Triple valve act as in the end of triple valve three two ends connection simultaneously switch off the 3rd end.With the of the first subsystem It is described as follows as a example by one triple valve 13：When 1301 ends connect with 1302 ends, 1303 ends disconnect；When 1301 ends connect with 1303 ends When, 1302 ends disconnect；When 1302 ends connect with 1303 ends, 1301 ends disconnect.Remaining is by that analogy.
System have freeze, heat, three kinds of basic models of defrost, each pattern refrigerant circulation flow is described as follows：
1st, refrigeration mode：
The D ends of the four-way valve 12 of the first subsystem connect with E ends, S ends connect with C-terminal, the 3rd threeway of the first subsystem 11001 ends of valve 110 connect with 11003 ends, and 1902 ends of the second triple valve 19 of the first subsystem connect with 1903 ends, and first 1303 ends of the first triple valve 13 of subsystem connect with 1301 ends, and the D ends of the four-way valve 22 of the second subsystem connect with E ends, S End connects with C-terminal, and 21001 ends of the 3rd triple valve 210 of the second subsystem connect with 21003 ends, and the second of the second subsystem 2902 ends of triple valve 29 connect with 2903 ends, and 2301 ends of the first triple valve 23 of the second subsystem connect with 2302 ends.System Two subsystems separate refrigeration when cold.
HTHP refrigerant medium from the discharge of exhaust outlet 1102 of the compressor 11 of the first subsystem is by the first subsystem The D ends and E ends of the four-way valve 12 of system, enter in the wind side finned heat exchanger 114 of the first subsystem to air heat release from 11401 ends High-temperature liquid state refrigerant is condensed into, is brought out by the second check valve 111 of the first subsystem from 11402, be then split up into main road With bypass two-way refrigerant.Main road high-temperature liquid state refrigerant is cooled to by 1601 ends into heat release in the economizer 16 of the first subsystem Supercooling refrigerant.The supercooling refrigerant for coming is brought out again by the reducing pressure by regulating flow of main road choke valve 17 of the first subsystem from 1602, from first 11001 ends and 11003 ends of the 3rd triple valve of subsystem pass through, then by the 3rd check valve 112 of the first subsystem, by 0402 end enters evaporation endothermic refrigeration in water-side heat 04, the low-temp low-pressure refrigerant for coming is brought out from 0401 and passes through the first subsystem The first triple valve 13 1303 ends and 1301 ends, then the four-way valve 12 for passing through the first subsystem C-terminal and S ends, by 11501 ends The gas-liquid separation into the gas-liquid separator 115 of the first subsystem, low-temp low-pressure gaseous coolant is brought out by first from 11502 The air entry 1101 of the compressor 11 of subsystem is into compression in the compressor 11 of the first subsystem, so as to complete main road refrigeration follow Ring.Bypass high-temperature liquid state refrigerant is gas-liquid two-phase refrigerant by the reducing pressure by regulating flow of bypass choke valve 18 of the first subsystem, from 1603 End flashes to gaseous coolant into heat absorption in the economizer 16 of the first subsystem.Brought out from 1604 and carry out gaseous coolant by the first son 1902 ends and 1903 ends of the second triple valve 19 of system, then by the 5th check valve 116 of the first subsystem through the first subsystem The gas supplementing opening 1103 of the compressor 11 of system is into compression in the compressor 11 of the first subsystem, so as to complete bypass tonifying Qi circulation. Said process constitutes the kind of refrigeration cycle of the first subsystem.
HTHP refrigerant medium from the discharge of exhaust outlet 2102 of the compressor 21 of the second subsystem is by the second subsystem The D ends and E ends of the four-way valve 22 of system, enter in the wind side finned heat exchanger 214 of the second subsystem to air heat release from 21401 ends High-temperature liquid state refrigerant is condensed into, is brought out by the second check valve 211 of the second subsystem from 21402, be then split up into main road With bypass two-way refrigerant.Main road high-temperature liquid state refrigerant is cooled to by 2601 ends into heat release in the economizer 26 of the second subsystem Supercooling refrigerant.The supercooling refrigerant for coming is brought out again by the reducing pressure by regulating flow of main road choke valve 27 of the second subsystem from 2602, from second 21001 ends and 21003 ends of the 3rd triple valve of subsystem pass through, then by the 3rd check valve 212 of the second subsystem, by 0404 end enters evaporation endothermic refrigeration in water-side heat 04, the low-temp low-pressure refrigerant for coming is brought out from 0403 and passes through the second subsystem The first triple valve 23 2301 ends and 2302 ends, then the four-way valve 22 for passing through the second subsystem C-terminal and S ends, entered by 21501 Enter gas-liquid separation in the gas-liquid separator 215 of the second subsystem, low-temp low-pressure gaseous coolant is brought out by the second son from 21502 The air entry 2101 of the compressor 21 of system is into compression in the compressor 21 of the second subsystem, so as to complete main road refrigeration follow Ring.Bypass high-temperature liquid state refrigerant is gas-liquid two-phase refrigerant by the reducing pressure by regulating flow of bypass choke valve 28 of the second subsystem, from 2603 End is evaporated to gaseous coolant into heat absorption in the economizer 26 of the second subsystem.Brought out from 2604 and carry out gaseous coolant by the second son 2902 ends and 2903 ends of the second triple valve 29 of system, then by the 5th check valve 216 of the second subsystem through the second subsystem The gas supplementing opening 2103 of the compressor 21 of system is into compression in the compressor 21 of the second subsystem, so as to complete bypass tonifying Qi circulation. Said process constitutes the kind of refrigeration cycle of the second subsystem.
2nd, circulation is heated：
The D ends of the four-way valve 12 of the first subsystem connect with C-terminal, S ends connect with E ends, the 3rd threeway of the first subsystem 11001 ends of valve 110 connect with 11003 ends, and 1902 ends of the second triple valve 19 of the first subsystem connect with 1903 ends, and first 1303 ends of the first triple valve 13 of subsystem connect with 1301 ends, and the D ends of the four-way valve 22 of the second subsystem connect with C-terminal, S End connects with E ends, and 21001 ends of the 3rd triple valve 210 of the second subsystem connect with 21003 ends, and the second of the second subsystem 2902 ends of triple valve 29 connect with 2903 ends, and 2301 ends of the first triple valve 23 of the second subsystem connect with 2302 ends.System Two subsystems are separate when hot heats.
HTHP refrigerant medium from the discharge of exhaust outlet 1102 of the compressor 11 of the first subsystem is by the first subsystem The D ends of the four-way valve 12 of system and C-terminal, then the first triple valve 13 by the first subsystem 1301 ends and 1303 ends, from 0401 End enter water-side heat 04 in water exothermic condensation be high-temperature liquid state refrigerant, brought out from 0402 and come again by the first subsystem First check valve 15, is then split up into main road and bypass two-way refrigerant.Main road high-temperature liquid state refrigerant enters first by 1601 ends Heat release is cooled to that refrigerant is subcooled in the economizer 16 of subsystem.The supercooling refrigerant for coming is brought out again by the first subsystem from 1602 The reducing pressure by regulating flow of main road choke valve 17, passes through from 11001 ends and 11003 ends of the 3rd triple valve of the first subsystem, then by 4th check valve 113 of one subsystem, enters in the wind side finned heat exchanger 114 of the first subsystem from 11402 ends and is inhaled from air Thermal evaporation is low-temp low-pressure refrigerant, and the E ends and S ends for carrying out four-way valve 12 again by the first subsystem are brought out from 11401, by 11501 ends bring out into gas-liquid separation in the gas-liquid separator 115 of the first subsystem, low-temp low-pressure gaseous coolant from 11502 Compressed in the compressor 11 for entering the first subsystem by the air entry 1101 of the compressor 11 of the first subsystem, so as to complete master Road heats circulation.Bypass high-temperature liquid state refrigerant is by the reducing pressure by regulating flow of bypass choke valve 18 of the first subsystem for gas-liquid two-phase is cold Matchmaker, from 1603 ends into the economizer 16 of the first subsystem in heat absorption flash to gaseous coolant.Brought out from 1604 and carry out gaseous coolant By 1902 ends and 1903 ends of the second triple valve 19 of the first subsystem, then the 5th check valve 116 for passing through the first subsystem Compressed in the compressor 11 for entering the first subsystem through the gas supplementing opening 1103 of the compressor 11 of the first subsystem, so as to complete bypass Tonifying Qi is circulated.Said process constitutes the first subsystem and heats circulation.
HTHP refrigerant medium from the discharge of exhaust outlet 2102 of the compressor 21 of the second subsystem is by the second subsystem The D ends of the four-way valve 22 of system and C-terminal, then the first triple valve 23 by the second subsystem 2302 ends and 2301 ends, from 0403 End enter water-side heat 04 in water exothermic condensation be high-temperature liquid state refrigerant, brought out from 0404 and come again by the second subsystem First check valve 25, is then split up into main road and bypass two-way refrigerant.Main road high-temperature liquid state refrigerant enters second by 2601 ends Heat release is cooled to that refrigerant is subcooled in the economizer 26 of subsystem.The supercooling refrigerant for coming is brought out again by the second subsystem from 2602 The reducing pressure by regulating flow of main road choke valve 27, passes through from 21001 ends and 21003 ends of the 3rd triple valve of the second subsystem, then by 4th check valve 213 of two subsystems, enters in the wind side finned heat exchanger 214 of the second subsystem from 21402 ends and is inhaled from air Thermal evaporation is low-temp low-pressure refrigerant, and the E ends and S ends for carrying out four-way valve 22 again by the second subsystem are brought out from 21401, by Gas-liquid separation in 21501 gas-liquid separators 215 for entering the second subsystem, low-temp low-pressure gaseous coolant brings out to lead to from 21502 The air entry 2101 of compressor 21 of the second subsystem is crossed into compression in the compressor 21 of the second subsystem, so as to complete main road Heat circulation.Bypass high-temperature liquid state refrigerant is gas-liquid two-phase refrigerant by the reducing pressure by regulating flow of bypass choke valve 28 of the second subsystem, Heat absorption flashes to gaseous coolant in from 2603 ends into the economizer 26 of the second subsystem.Brought out from 2604 and carry out gaseous coolant and pass through 2902 ends and 2903 ends of the second triple valve 29 of the second subsystem, then by the 5th check valve 216 of the second subsystem through Compressed in the compressor 21 of second subsystem of entrance of gas supplementing opening 2103 of the compressor 21 of two subsystems, so as to complete bypass tonifying Qi Circulation.Said process constitutes the second subsystem and heats circulation.
3rd, defrost circulation：
3.1st, the defrosting of the first subsystem, the second subsystem are heated (do not spray enthalpy)
The D ends of the four-way valve 12 of the first subsystem connect with E ends, S ends connect with C-terminal, the 3rd threeway of the first subsystem 11001 ends of valve 110 connect with 11002 ends, and 1302 ends of the first triple valve 13 of the first subsystem connect with 1301 ends, and first The bypass choke valve 18 of subsystem is closed and not connected, and the D ends of the four-way valve 22 of the second subsystem connect with C-terminal, S ends and E ends connect Logical, 21001 ends of the 3rd triple valve 210 of the second subsystem connect with 21003 ends, the second triple valve 29 of the second subsystem 2902 ends connect with 2901 ends, and 2302 ends of the first triple valve 23 of the second subsystem connect with 2301 ends, the second subsystem Bypass choke valve 28 is closed and not connected.When the first subsystem defrosts, the second subsystem is heated (do not spray enthalpy).
HTHP refrigerant medium from the discharge of exhaust outlet 1102 of the compressor 11 of the first subsystem is by the first subsystem The D ends and E ends of the four-way valve 12 of system, heat release defrost in the wind side finned heat exchanger 114 of the first subsystem is entered from 11401 ends, High-temperature liquid state refrigerant is condensed into, is brought out by the second check valve 111 of the first subsystem, afterwards by 1601 ends from 11402 Heat release is cooled to that refrigerant is subcooled into the economizer 16 of the first subsystem.The supercooling refrigerant for coming is brought out again by first from 1602 The reducing pressure by regulating flow of main road choke valve 17 of subsystem, passes through from 11001 ends and 11002 ends of the 3rd triple valve of the first subsystem, Heat absorption is evaporated to low-temp low-pressure refrigerant in again from 2603 ends into the economizer 26 of the second subsystem, is brought out from 2604 after coming through the 2902 ends and 2901 ends of the second triple valve 29 of two subsystems, then the first triple valve 13 for passing through the first subsystem 1302 ends With 1301 ends, the C-terminal and S ends for carrying out four-way valve 12 again by the first subsystem are brought out from 1301, the first son is entered by 11501 ends Gas-liquid separation in the gas-liquid separator 115 of system, low-temp low-pressure gaseous coolant brings out the pressure by the first subsystem from 11502 Compressed in the compressor 11 of first subsystem of entrance of air entry 1101 of contracting machine 11, so that the defrost for completing the first subsystem is followed Ring.
HTHP refrigerant medium from the discharge of exhaust outlet 2102 of the compressor 21 of the second subsystem is by the second subsystem The D ends of the four-way valve 22 of system and C-terminal, then the first triple valve 23 by the second subsystem 2302 ends and 2301 ends, from 0403 End enter water-side heat 04 in water exothermic condensation be high-temperature liquid state refrigerant, brought out from 0404 and come again by the second subsystem First check valve 25, high-temperature liquid state refrigerant was cooled to cold by 2601 ends into heat release in the economizer 26 of the second subsystem Matchmaker.The supercooling refrigerant for coming is brought out again by the reducing pressure by regulating flow of main road choke valve 27 of the second subsystem from 2602, from the second subsystem The 3rd triple valve 21001 ends and 21003 ends pass through, then by the 4th check valve 213 of the second subsystem, from 21402 ends Low-temp low-pressure refrigerant is evaporated to from air heat absorption into the wind side finned heat exchanger 214 of the second subsystem, brings out to come from 21401 Pass through the E ends and S ends of the four-way valve 22 of the second subsystem again, by gas in 21501 gas-liquid separators 215 for entering the second subsystem Liquid is separated, and low-temp low-pressure gaseous coolant brings out from 21502 and enters come the air entry 2101 of the compressor 21 by the second subsystem Compressed in the compressor 21 of the second subsystem, so that completing the second subsystem heats (do not spray enthalpy) circulation.
When the first subsystem defrosts, the second subsystem is normally heated.The economizer 26 of the second subsystem is used as defrosting The evaporator of the first subsystem, the defrost heat of the first subsystem of defrosting do work and heat from itself compressor 11 second The heat that the high-temperature liquid state refrigerant of subsystem is released in the supercooling of economizer 26 of the second subsystem, the second subsystem for heating and defrosting The first subsystem realize energy complement so as to rationally utilize system capacity.Not from water-side heat 04 during the defrosting of the first subsystem Absorb heat, it is ensured that whole system can continuous heating when defrosting.
3.2nd, the defrosting of the second subsystem, the first subsystem are heated (do not spray enthalpy)
The D ends of the four-way valve 12 of the first subsystem connect with C-terminal, S ends connect with E ends, the 3rd threeway of the first subsystem 11001 ends of valve 110 connect with 11003 ends, and 1902 ends of the second triple valve 19 of the first subsystem connect with 1901 ends, and first 1301 ends of the first triple valve 13 of subsystem are connected with 1303 ends, and the bypass choke valve 18 of the first subsystem is closed and do not connected. The D ends of the four-way valve 22 of the second subsystem connect with E ends, S ends connect with C-terminal, the 3rd triple valve 210 of the second subsystem 21001 ends connect with 21002 ends, and 2303 ends of the first triple valve 23 of the second subsystem connect with 2302 ends, the second subsystem Bypass choke valve 28 close and do not connect.When the second subsystem defrosts, the first subsystem is heated (do not spray enthalpy).
HTHP refrigerant medium from the discharge of exhaust outlet 2102 of the compressor 21 of the second subsystem is by the second subsystem The D ends and E ends of the four-way valve 22 of system, heat release defrost in the wind side finned heat exchanger 214 of the second subsystem is entered from 21401 ends, High-temperature liquid state refrigerant is condensed into, is brought out by the second check valve 211 of the second subsystem, afterwards by 2601 ends from 21402 Heat release is cooled to that refrigerant is subcooled into the economizer 26 of the second subsystem.The supercooling refrigerant for coming is brought out again by second from 2602 The reducing pressure by regulating flow of main road choke valve 27 of subsystem, passes through from 21001 ends and 21002 ends of the 3rd triple valve of the second subsystem, Heat absorption is evaporated to low-temp low-pressure refrigerant in again from 1603 ends into the economizer 16 of the first subsystem, is brought out from 1604 after coming through the 1902 ends and 1901 ends of the second triple valve 19 of one subsystem, then the first triple valve 23 for passing through the second subsystem 2303 ends With 2302 ends, the C-terminal and S ends for carrying out four-way valve 22 again by the second subsystem are brought out from 2302, the second son is entered by 21501 ends Gas-liquid separation in the gas-liquid separator 215 of system, low-temp low-pressure gaseous coolant brings out the pressure by the second subsystem from 21502 Compressed in the compressor 21 of second subsystem of entrance of air entry 2101 of contracting machine 21, so that the defrost for completing the second subsystem is followed Ring.
HTHP refrigerant medium from the discharge of exhaust outlet 1102 of the compressor 11 of the first subsystem is by the first subsystem The D ends of the four-way valve 12 of system and C-terminal, then the first triple valve 13 by the first subsystem 1301 ends and 1303 ends, from 0401 End enter water-side heat 04 in water exothermic condensation be high-temperature liquid state refrigerant, brought out from 0402 and come again by the first subsystem First check valve 15, high-temperature liquid state refrigerant was cooled to cold by 1601 ends into heat release in the economizer 16 of the first subsystem Matchmaker.The supercooling refrigerant for coming is brought out again by the reducing pressure by regulating flow of main road choke valve 17 of the first subsystem from 1602, from the first subsystem The 3rd triple valve 11001 ends and 11003 ends pass through, then by the 4th check valve 113 of the first subsystem, from 11402 ends Low-temp low-pressure refrigerant is evaporated to from air heat absorption into the wind side finned heat exchanger 114 of the first subsystem, brings out to come from 11401 Pass through the E ends and S ends of the four-way valve 12 of the first subsystem again, by gas in 11501 gas-liquid separators 115 for entering the first subsystem Liquid is separated, and low-temp low-pressure gaseous coolant brings out from 11502 and enters come the air entry 1101 of the compressor 11 by the first subsystem Compressed in the compressor 11 of the first subsystem, so that completing the first subsystem heats (do not spray enthalpy) circulation.
When the second subsystem defrosts, the first subsystem is normally heated.The economizer 16 of the first subsystem is used as defrosting The evaporator of the second subsystem, the defrost heat of the second subsystem of defrosting do work and heat from itself compressor 21 The heat that the high-temperature liquid state refrigerant of one subsystem is released in the supercooling of economizer 16 of the first subsystem, the first subsystem for heating and removes Second subsystem of frost realizes energy complement so as to rationally utilize system capacity.Not from water-side heat during the defrosting of the second subsystem 04 absorbs heat, it is ensured that whole system can continuous heating when defrosting.
The schematic diagram of the second embodiment with reference to shown in Fig. 2 carrys out the detailed description second embodiment of the present invention.
In Fig. 2 11 for the first subsystem compressor, 1101 for the first subsystem compressor air suction mouthful, 1102 be first The exhaust outlet of compressor of subsystem, 1103 are the compressor gas supplementing opening of the first subsystem；12 is the four-way valve of the first subsystem；13 It is the first triple valve of the first subsystem；04 is the first subsystem for system water-side heat (each subsystem is shared), 0401 Connection water-side heat gas tube orifice, 0402 are the connection water-side heat liquid pipe mouthful of the first subsystem；15 is the first subsystem First check valve；16 for the first subsystem economizer, 1601 for the first subsystem economizer main road entrance, 1602 be first Subsystem economizer main road outlet, 1603 for the first subsystem economizer bypass entrance, 1604 for the first subsystem warp The bypass outlet of Ji device；17 is the main road choke valve of the first subsystem；18 is the bypass choke valve of the first subsystem；19 is the first son Second triple valve of system；110 is the ball valve of the first subsystem；111 is the second check valve of the first subsystem；112 is first 3rd check valve of subsystem；113 is the 4th check valve of the first subsystem；114 is the 3rd triple valve of the first subsystem； 115 for the first subsystem wind side finned heat exchanger, 11501 be wind side finned heat exchanger gas tube orifice, 11502 of the first subsystem It is the wind side finned heat exchanger liquid pipe mouthful of the first subsystem；116 for the first subsystem gas-liquid separator, 11601 be first son The gas-liquid separator entrance of system, 11602 are the gas-liquid separator outlet of the first subsystem.117 is the 5th of the first subsystem Check valve.
Likewise, in Fig. 2 21 for the second subsystem compressor, 2101 for the second subsystem compressor air suction mouthful, 2102 for the second subsystem exhaust outlet of compressor, 2103 for the second subsystem compressor gas supplementing opening；22 is the second subsystem Four-way valve；23 is the first triple valve of the second subsystem；04 it is system water-side heat (each subsystem share), 0403 is the The connection water-side heat gas tube orifice of two subsystems, 0404 are the connection water-side heat liquid pipe mouthful of the second subsystem；25 is First check valve of two subsystems；26 for the second subsystem economizer, 2601 for the second subsystem economizer main road entrance, 2602 for the second subsystem economizer main road outlet, 2603 for the second subsystem economizer bypass entrance, 2604 be second The economizer bypass outlet of subsystem；27 is the main road choke valve of the second subsystem；28 is the bypass choke valve of the second subsystem； 29 is the second triple valve of the second subsystem；210 is the ball valve of the second subsystem；211 is the second check valve of the second subsystem； 212 is the 3rd check valve of the second subsystem；213 is the 4th check valve of the second subsystem；214 is the 3rd of the second subsystem Triple valve；215 for the second subsystem wind side finned heat exchanger, 21501 for the second subsystem wind side finned heat exchanger tracheae Mouth, 21502 are the wind side finned heat exchanger liquid pipe mouthful of the second subsystem；216 is gas-liquid separator, 21601 of the second subsystem For the second subsystem gas-liquid separator entrance, 21602 for the second subsystem gas-liquid separator export.217 is the second subsystem 5th check valve of system.
Triple valve act as in the end of triple valve three two ends connection simultaneously switch off the 3rd end.With the of the first subsystem It is described as follows as a example by one triple valve 13：When 1301 ends connect with 1302 ends, 1303 ends disconnect；When 1301 ends connect with 1303 ends When, 1302 ends disconnect；When 1302 ends connect with 1303 ends, 1301 ends disconnect.Remaining is by that analogy.
System have freeze, heat, three kinds of basic models of defrost, each pattern refrigerant circulation flow is described as follows：
1st, kind of refrigeration cycle：
The D ends of the four-way valve 12 of the first subsystem connect with E ends, S ends connect with C-terminal, the ball valve of the first subsystem 110 dozens Connection is opened, 11402 ends of the 3rd triple valve 114 of the first subsystem connect with 11403 ends, the second triple valve of the first subsystem 19 1902 ends connect with 1903 ends, and 1303 ends of the first triple valve 13 of the first subsystem connect with 1301 ends, the second subsystem The D ends of the four-way valve 22 of system connect with E ends, S ends connect with C-terminal, and the ball valve 210 of the second subsystem opens connection, the second subsystem 21402 ends of the 3rd triple valve 214 of system connects with 21403 ends, 2902 ends of the second triple valve 29 of the second subsystem with 2903 ends connect, and 2301 ends of the first triple valve 23 of the second subsystem connect with 2302 ends.Two subsystems are mutual during refrigeration Independent cooling.
HTHP refrigerant medium from the discharge of exhaust outlet 1102 of the compressor 11 of the first subsystem is by the first subsystem The D ends and E ends of the four-way valve 12 of system, enter in the wind side finned heat exchanger 115 of the first subsystem to air heat release from 11501 ends High-temperature liquid state refrigerant is condensed into, 11402 ends and 11403 by the 3rd triple valve 114 of the first subsystem are brought out from 11502 End, then by the second check valve 111 of the first subsystem, then it is split up into main road and bypass two-way refrigerant.Main road high-temperature liquid state Refrigerant is cooled to that refrigerant is subcooled by 1601 ends into heat release in the economizer 16 of the first subsystem.The supercooling for coming is brought out from 1602 Refrigerant again by the reducing pressure by regulating flow of main road choke valve 17 and the 3rd check valve 112 of the first subsystem of the first subsystem, by 0402 End enters evaporation endothermic refrigeration in water-side heat 04, and the low-temp low-pressure refrigerant for coming passes through the first subsystem the is brought out from 0401 1303 ends and 1301 ends of one triple valve 13, then the four-way valve 12 for passing through the first subsystem C-terminal and S ends, by 11601 ends enter Gas-liquid separation in the gas-liquid separator 116 of the first subsystem, low-temp low-pressure gaseous coolant is brought out by the first subsystem from 11602 Compressed in the compressor 11 of first subsystem of entrance of air entry 1101 of the compressor 11 of system, so as to complete main road kind of refrigeration cycle. Bypass high-temperature liquid state refrigerant drops by being throttled by the bypass choke valve 18 of the first subsystem again after the ball valve 110 of the first subsystem It is gas-liquid two-phase refrigerant to press, from 1603 ends into the economizer 16 of the first subsystem in heat absorption flash to gaseous coolant.From 1604 1902 ends and 1903 ends for carrying out the second triple valve 19 that gaseous coolant passes through the first subsystem are brought out, then by the first subsystem 5th check valve 117 is pressed in the compressor 11 through first subsystem of entrance of gas supplementing opening 1103 of the compressor 11 of the first subsystem Contracting, so as to complete bypass tonifying Qi circulation.Said process constitutes the kind of refrigeration cycle of the first subsystem.
HTHP refrigerant medium from the discharge of exhaust outlet 2102 of the compressor 21 of the second subsystem is by the second subsystem The D ends and E ends of the four-way valve 22 of system, enter in the wind side finned heat exchanger 215 of the second subsystem to air heat release from 21501 ends High-temperature liquid state refrigerant is condensed into, 21402 ends and 21403 by the 3rd triple valve 214 of the second subsystem are brought out from 21502 End, then by the second check valve 211 of the second subsystem, then it is split up into main road and bypass two-way refrigerant.Main road high-temperature liquid state Refrigerant is cooled to that refrigerant is subcooled by 2601 ends into heat release in the economizer 26 of the second subsystem.The supercooling for coming is brought out from 2602 Refrigerant again by the reducing pressure by regulating flow of main road choke valve 27 and the 3rd check valve 212 of the second subsystem of the second subsystem, by 0404 End enters evaporation endothermic refrigeration in water-side heat 04, and the low-temp low-pressure refrigerant for coming passes through the second subsystem the is brought out from 0403 2301 ends and 2302 ends of one triple valve 23, then the four-way valve 22 for passing through the second subsystem C-terminal and S ends, enter by 21601 Gas-liquid separation in the gas-liquid separator 216 of two subsystems, low-temp low-pressure gaseous coolant is brought out by the second subsystem from 21602 Compressor 21 air entry 2101 enter the second subsystem compressor 21 in compress, so as to complete main road kind of refrigeration cycle.It is auxiliary Road high-temperature liquid state refrigerant by after the ball valve 210 of the second subsystem again by the reducing pressure by regulating flow of bypass choke valve 28 of the second subsystem Be gas-liquid two-phase refrigerant, from 2603 ends into the economizer 26 of the second subsystem in heat absorption be evaporated to gaseous coolant.From 2604 ends 2902 ends and 2903 ends that out gaseous coolant passes through the second triple valve 29 of the second subsystem, then pass through the second subsystem the Five check valves 217 compress in the compressor 21 through second subsystem of entrance of gas supplementing opening 2103 of the compressor 21 of the second subsystem, So as to complete bypass tonifying Qi circulation.Said process constitutes the kind of refrigeration cycle of the second subsystem.
2nd, circulation is heated：
The D ends of the four-way valve 12 of the first subsystem connect with C-terminal, S ends connect with E ends, the ball valve of the first subsystem 110 dozens Connection is opened, 11402 ends of the 3rd triple valve 114 of the first subsystem connect with 11403 ends, the second triple valve of the first subsystem 19 1902 ends connect with 1903 ends, and 1303 ends of the first triple valve 13 of the first subsystem connect with 1301 ends, the second subsystem The D ends of the four-way valve 22 of system connect with C-terminal, S ends connect with E ends, and the ball valve 210 of the second subsystem opens connection, the second subsystem 21402 ends of the 3rd triple valve 214 of system connects with 21403 ends, 2902 ends of the second triple valve 29 of the second subsystem with 2903 ends connect, and 2302 ends of the first triple valve 23 of the second subsystem connect with 2301 ends.Two subsystems are mutual when heating Independent heating.
HTHP refrigerant medium from the discharge of exhaust outlet 1102 of the compressor 11 of the first subsystem is by the first subsystem The D ends of the four-way valve 12 of system and C-terminal, then the first triple valve 13 by the first subsystem 1301 ends and 1303 ends, from 0401 End enter water-side heat 04 in water exothermic condensation be high-temperature liquid state refrigerant, brought out from 0402 and come again by the first subsystem First check valve 15, is then split up into main road and bypass two-way refrigerant.Main road high-temperature liquid state refrigerant enters first by 1601 ends Heat release is cooled to that refrigerant is subcooled in the economizer 16 of subsystem.The supercooling refrigerant for coming is brought out again by the first subsystem from 1602 4th check valve 113 of the reducing pressure by regulating flow of main road choke valve 17 and the first subsystem, the wind side of the first subsystem is entered from 11502 ends Low-temp low-pressure refrigerant is evaporated to from air heat absorption in finned heat exchanger 115, is brought out from 11501 and to pass through the four of the first subsystem again The E ends and S ends of port valve 12, gas-liquid separation, low-temp low-pressure gas in the gas-liquid separator 116 of the first subsystem are entered by 11601 ends State refrigerant brings out the compressor for entering the first subsystem by the air entry 1101 of the compressor 11 of the first subsystem from 11602 Compressed in 11, so that completing main road heats circulation.Bypass high-temperature liquid state refrigerant passes through again by after the ball valve 110 of the first subsystem The reducing pressure by regulating flow of bypass choke valve 18 of the first subsystem is gas-liquid two-phase refrigerant, and the economizer of the first subsystem is entered from 1603 ends Heat absorption flashes to gaseous coolant in 16.Brought out from 1604 and come the 1902 of the second triple valve 19 that gaseous coolant passes through the first subsystem End and 1903 ends, then by the 5th check valve 117 of the first subsystem through the compressor 11 of the first subsystem gas supplementing opening 1103 Compressed into the compressor 11 of the first subsystem, so as to complete bypass tonifying Qi circulation.Said process constitutes the first subsystem Heat circulation.
HTHP refrigerant medium from the discharge of exhaust outlet 2102 of the compressor 21 of the second subsystem is by the second subsystem The D ends of the four-way valve 22 of system and C-terminal, then the first triple valve 23 by the second subsystem 2302 ends and 2301 ends, from 0403 End enter water-side heat 04 in water exothermic condensation be high-temperature liquid state refrigerant, brought out from 0404 and come again by the second subsystem First check valve 25, is then split up into main road and bypass two-way refrigerant.Main road high-temperature liquid state refrigerant enters second by 2601 ends Heat release is cooled to that refrigerant is subcooled in the economizer 26 of subsystem.The supercooling refrigerant for coming is brought out again by the second subsystem from 2602 4th check valve 213 of the reducing pressure by regulating flow of main road choke valve 27 and the second subsystem, the wind side of the second subsystem is entered from 21502 ends Low-temp low-pressure refrigerant is evaporated to from air heat absorption in finned heat exchanger 215, is brought out from 21501 and to pass through the four of the second subsystem again The E ends and S ends of port valve 22, by gas-liquid separation, low-temp low-pressure gaseous state in 21601 gas-liquid separators 216 for entering the second subsystem Refrigerant brings out the compressor 21 for entering the second subsystem by the air entry 2101 of the compressor 21 of the second subsystem from 21602 Middle compression, so that completing main road heats circulation.Bypass high-temperature liquid state refrigerant by after the ball valve 210 of the second subsystem again by The reducing pressure by regulating flow of bypass choke valve 28 of two subsystems is gas-liquid two-phase refrigerant, and the economizer 26 of the second subsystem is entered from 2603 ends Middle heat absorption flashes to gaseous coolant.2902 ends for carrying out the second triple valve 29 that gaseous coolant passes through the second subsystem are brought out from 2604 With 2903 ends, then entered through the gas supplementing opening 2103 of the compressor 21 of the second subsystem by the 5th check valve 217 of the second subsystem Enter compression in the compressor 21 of the second subsystem, so as to complete bypass tonifying Qi circulation.Said process constitutes the system of the second subsystem Thermal cycle.
3rd, defrost circulation：
3.1st, the defrosting of the first subsystem, the second subsystem are heated (do not spray enthalpy)
The D ends of the four-way valve 12 of the first subsystem are connected with E ends, S ends connect with C-terminal, and the ball valve 110 of the first subsystem is closed Close and do not connect, 11402 ends of the 3rd triple valve 114 of the first subsystem connect with 11401 ends, the first threeway of the first subsystem 1302 ends of valve 13 connect with 1301 ends, and the D ends of the four-way valve 22 of the second subsystem connect with C-terminal, S ends connect with E ends, and second The ball valve 210 of subsystem is closed and not connected, and 21402 ends of the 3rd triple valve 214 of the second subsystem connect with 21403 ends, the 2902 ends of the second triple valve 29 of two subsystems connect with 2901 ends, 2302 ends of the first triple valve 23 of the second subsystem and 2301 ends connect.When the first subsystem defrosts, the second subsystem is heated (do not spray enthalpy).
HTHP refrigerant medium from the discharge of exhaust outlet 1102 of the compressor 11 of the first subsystem is by the first subsystem The D ends and E ends of the four-way valve 12 of system, heat release defrost in the wind side finned heat exchanger 115 of the first subsystem is entered from 11501 ends, Be condensed into high-temperature liquid state refrigerant, brought out from 11502 come the 3rd triple valve 114 again by the first subsystem 11402 ends and 11401 ends, are then gas-liquid two-phase refrigerant by the reducing pressure by regulating flow of bypass choke valve 28 of the second subsystem, and the is entered from 2603 ends Heat absorption is evaporated to low-temp low-pressure refrigerant in the economizer 26 of two subsystems, is brought out from 2604 after coming through the 2nd 3 of the second subsystem 2902 ends and 2901 ends of port valve 29, then the first triple valve 13 for passing through the first subsystem 1302 ends and 1301 ends, from 1301 The C-terminal and S ends for carrying out four-way valve 12 again by the first subsystem are brought out, the gas-liquid separation of the first subsystem is entered by 11601 ends Gas-liquid separation in device 116, low-temp low-pressure gaseous coolant brings out the air entry by the compressor 11 of the first subsystem from 11602 Compressed in 1101 compressors 11 for entering the first subsystem, so as to complete the defrost circulation of the first subsystem.From the second subsystem Compressor 21 the discharge of exhaust outlet 2102 D end and C of the HTHP refrigerant medium by the four-way valve 22 of the second subsystem End, then the first triple valve 23 by the second subsystem 2302 ends and 2301 ends, from 0403 end enter water-side heat 04 in It is high-temperature liquid state refrigerant to water exothermic condensation, the first check valve 25 for coming again by the second subsystem, high-temperature liquid is brought out from 0404 State refrigerant is cooled to that refrigerant is subcooled by 2601 ends into heat release in the economizer 26 of the second subsystem.The mistake come is brought out from 2602 Cold matchmaker again by the reducing pressure by regulating flow of main road choke valve 27 and the 4th check valve 213 of the second subsystem of the second subsystem, from 21502 ends are evaporated to low-temp low-pressure refrigerant into the wind side finned heat exchanger 215 of the second subsystem from air heat absorption, from 21501 bring out the E ends and S ends for carrying out four-way valve 22 again by the second subsystem, by 21601 gas-liquids point for entering the second subsystem The gas-liquid separation in device 216, low-temp low-pressure gaseous coolant brings out the air-breathing by the compressor 21 of the second subsystem from 21602 Compressed in the compressor 21 of the second subsystems of entrance of mouth 2101, so that completing the second subsystem heats (do not spray enthalpy) circulation.
When the first subsystem defrosts, the second subsystem is normally heated.The economizer 26 of the second subsystem is used as defrosting The evaporator of the first subsystem, the defrost heat of the first subsystem of defrosting do work and heat from itself compressor 11 The heat that the high-temperature liquid state refrigerant of two subsystems is released in the supercooling of economizer 26 of the second subsystem, the second subsystem for heating and removes First subsystem of frost realizes energy complement so as to rationally utilize system capacity.Not from water-side heat during the defrosting of the first subsystem 04 absorbs heat, it is ensured that whole system can continuous heating when defrosting.
3.2nd, the defrosting of the second subsystem, the first subsystem are heated (do not spray enthalpy)
The D ends of the four-way valve 12 of the first subsystem are connected with C-terminal, S ends connect with E ends, and the ball valve 110 of the first subsystem is closed Close and do not connect, 11402 ends of the 3rd triple valve 114 of the first subsystem connect with 11403 ends, the second threeway of the first subsystem 1902 ends of valve 19 connect with 1901 ends, and 1301 ends of the first triple valve 13 of the first subsystem connect with 1303 ends, the second son The D ends of the four-way valve 22 of system are connected with E ends, S ends connect with C-terminal, and the ball valve 210 of the second subsystem is closed and do not connected, and second 21402 ends of the 3rd triple valve 214 of subsystem connect with 21401 ends, 2303 ends of the first triple valve 23 of the second subsystem Connected with 2302 ends.When the second subsystem defrosts, the first subsystem is heated (do not spray enthalpy).
HTHP refrigerant medium from the discharge of exhaust outlet 2102 of the compressor 21 of the second subsystem is by the second subsystem The D ends and E ends of the four-way valve 22 of system, heat release defrost in the wind side finned heat exchanger 215 of the second subsystem is entered from 21501 ends, Be condensed into high-temperature liquid state refrigerant, brought out from 21502 come the 3rd triple valve 214 again by the second subsystem 21402 ends and 21401 ends, are then gas-liquid two-phase refrigerant by the reducing pressure by regulating flow of bypass choke valve 18 of the first subsystem, and the is entered from 1603 ends Heat absorption is evaporated to low-temp low-pressure refrigerant in the economizer 16 of one subsystem, is brought out from 1604 after coming through the 2nd 3 of the first subsystem 1902 ends and 1901 ends of port valve 19, then the first triple valve 23 for passing through the second subsystem 2303 ends and 2302 ends, from 2302 The C-terminal and S ends for carrying out four-way valve 22 again by the second subsystem are brought out, the gas-liquid separation of the second subsystem is entered by 21601 ends Gas-liquid separation in device 216, low-temp low-pressure gaseous coolant brings out the air entry by the compressor 21 of the second subsystem from 21602 Compressed in 2101 compressors 21 for entering the second subsystem, so as to complete the defrost circulation of the second subsystem.From the first subsystem Compressor 11 the discharge of exhaust outlet 1102 D end and C of the HTHP refrigerant medium by the four-way valve 12 of the first subsystem End, then the first triple valve 13 by the first subsystem 1301 ends and 1303 ends, from 0401 end enter water-side heat 04 in It is high-temperature liquid state refrigerant to water exothermic condensation, the first check valve 15 for coming again by the first subsystem, high-temperature liquid is brought out from 0402 State refrigerant is cooled to that refrigerant is subcooled by 1601 ends into heat release in the economizer 16 of the first subsystem.The mistake come is brought out from 1602 Cold matchmaker again by the reducing pressure by regulating flow of main road choke valve 17 and the 4th check valve 113 of the first subsystem of the first subsystem, from 11502 ends are evaporated to low-temp low-pressure refrigerant into the wind side finned heat exchanger 115 of the first subsystem from air heat absorption, from 11501 bring out the E ends and S ends for carrying out four-way valve 12 again by the first subsystem, by 11601 gas-liquids point for entering the first subsystem The gas-liquid separation in device 116, low-temp low-pressure gaseous coolant brings out the air-breathing by the compressor 11 of the first subsystem from 11602 Compressed in mouthfuls 1101 compressors 11 for entering the first subsystems, so that complete the first subsystem heats (do not spray enthalpy) circulation.
When the second subsystem defrosts, the first subsystem is normally heated.The economizer 16 of the first subsystem is used as defrosting The evaporator of the second subsystem, the defrost heat of the second subsystem of defrosting do work and heat from itself compressor 21 The heat that the high-temperature liquid state refrigerant of one subsystem is released in the supercooling of economizer 16 of the first subsystem, the first subsystem for heating and removes Second subsystem of frost realizes energy complement so as to rationally utilize system capacity.Not from water-side heat during the defrosting of the second subsystem 04 absorbs heat, it is ensured that whole system can continuous heating when defrosting.
It should be noted that in the first embodiment and the second embodiment, triple valve can be combined by several two-way valves Form realize.3rd embodiment shown in Fig. 3 is that the first son of the first embodiment shown in Fig. 1 is replaced with two two-port valves It is described as follows as a example by first triple valve 13 of system, replacing latter two two-port valve, to be respectively the first two-port valve 119 and second liang logical Valve 120, other parts are identical with first embodiment shown in Fig. 1.
In the third embodiment, during kind of refrigeration cycle, first two-way valve 119 of the first subsystem opens connection, the first subsystem Second two-way valve 120 of system is closed and not connected, and other component states are identical with first embodiment, and refrigerant circulation stream is also with the One embodiment is identical, repeats no more.
Correspondingly, when heating circulation, first two-way valve 119 of the first subsystem opens connection, the second of the first subsystem Two-way valve 120 is closed and not connected, and other component states are identical with first embodiment, refrigerant circulation stream also with first embodiment It is identical, repeat no more.
During defrost, when the defrosting of the first subsystem, the second subsystem are heated (do not spray enthalpy), the first of the first subsystem Two-way valve 119 is closed and not connected, and second two-way valve 120 of the first subsystem opens connection, and other component states are real with first Apply example identical, refrigerant circulation stream is also identical with first embodiment, repeats no more.When the defrosting of the second subsystem, the first subsystem When heating (do not spray enthalpy), first the first two-way valve of subsystem 119 opens connection, and first the second two-way valve of subsystem 120 is closed not Connection, other component states are identical with first embodiment, and refrigerant circulation stream is also identical with first embodiment, repeats no more.
Fourth embodiment shown in Fig. 4 is that on the basis of first embodiment, two subsystems use is independently arranged water side and changes Hot device (indoor heat exchanger), namely two subsystems do not share integrated integrated heat exchanger, and its operation principle and refrigerant are flowed to It is similar with first embodiment, repeat no more.In the fourth embodiment, can equally realize system when defrosting not from indoor heat exchanger Heat is absorbed, so as to ensure whole air-conditioning system unit continuous heating, reduces fluctuating temperature, improve user's usage comfort.
The 5th embodiment shown in Fig. 5 is that on the basis of second embodiment, two subsystems use is independently arranged water side and changes Hot device (indoor heat exchanger), namely two subsystems do not share integrated integrated heat exchanger, and its operation principle and refrigerant are flowed to It is similar with first embodiment, repeat no more.In the 5th embodiment, can equally realize system when defrosting not from indoor heat exchanger Heat is absorbed, so as to ensure whole air-conditioning system unit continuous heating, reduces fluctuating temperature, improve user's usage comfort.
Present invention also offers a kind of air-conditioning system, including at least one foregoing air-conditioning system unit, thus realize be Heat is not absorbed from indoor heat exchanger during system defrosting, so as to ensure whole air-conditioning system unit continuous heating, reduces fluctuating temperature, Improve user's usage comfort.
Preferably, in air-conditioning system of the invention, the indoor heat exchanger of all air-conditioning system units can be integrated into one Individual total heat exchanger, each subsystem of each air-conditioning system unit of correspondence sets corresponding refrigerant interface, a side on total heat exchanger Face can effectively reduce the volume of whole air-conditioning system, reduce area occupied；On the other hand, it is also possible to which guarantee section subsystem exists During defrosting, total heat exchanger has heat to be input into all the time, so as to ensure heating effect, improves comfortableness.
As can be seen from the above description, the above embodiments of the present invention realize following technique effect：
Air-conditioning system unit of the invention and air-conditioning system, the first subsystem and the difference defrost of the second subsystem, the During one subsystem defrost, the bypass of the second economizer is set to access the first compression circulation so that first by the first defrost pipeline The refrigerant for compressing circulation is no longer pass through the first indoor heat exchanger, and the second subsystem is normally heated；Second subsystem defrost process is anti- It；So as to ensure whole air-conditioning system unit continuous heating, reduce fluctuating temperature, improve user's usage comfort
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair Change, equivalent, improvement etc., should be included within the scope of the present invention.

Claims (8)

1. a kind of air-conditioning system unit, including the first subsystem and the second subsystem；Wherein,
First subsystem includes being interconnected to form the first compressor, the first outdoor heat exchanger, the of the first compression circulation One indoor heat exchanger and for the first economizer to the first compressor Gas-supplying enthalpy-increasing；
Second subsystem includes being interconnected to form the second compressor, the second outdoor heat exchanger, the of the second compression circulation Two indoor heat exchangers and for the second economizer to the second compressor Gas-supplying enthalpy-increasing；
Characterized in that, the air-conditioning system unit also includes：
Selectively make the bypass of second economizer access first compression to circulate so that the refrigerant of the first compression circulation It is no longer pass through the first defrost pipeline of first indoor heat exchanger；And
Selectively make the bypass of first economizer access second compression to circulate so that the refrigerant of the second compression circulation It is no longer pass through the second defrost pipeline of second indoor heat exchanger.
2. air-conditioning system unit according to claim 1, it is characterised in that
The first compression circulation has first be located between first outdoor heat exchanger and first indoor heat exchanger Contact and the second contact；
The second compression circulation has the 3rd be located between second outdoor heat exchanger and second indoor heat exchanger Contact and the 4th contact；
The inlet pipe of first economizer includes that import contact, the port of export heat import branch with the import contact is connected respectively Main road inlet pipe and bypass inlet pipe that pipe and refrigeration entrance branch and entrance point are connected with the import contact respectively；Wherein, institute State and heat the entrance point of entrance branch and be connected with first contact, the entrance point of the refrigeration entrance branch connects with described second Point connection, the port of export of the main road inlet pipe is connected with the entrance point of the main road of first economizer, the bypass inlet pipe The port of export is connected with the bypass import of first economizer, and has been arranged in series bypass throttling arrangement on the bypass inlet pipe；
The outlet pipe of the main road of first economizer include outlet supervisor and with it is described outlet supervisor be connected heat outlet stool With refrigeration outlet stool, wherein, the port of export for heating outlet stool be connected with second contact, it is described refrigeration outlet prop up The port of export of pipe is connected with first contact, and the outlet supervisor has been arranged in series main road throttling arrangement, described to heat out Check valve has been arranged in series respectively on mouth branch pipe and refrigeration outlet stool；
The inlet pipe of second economizer includes that import contact, the port of export heat import branch with the import contact is connected respectively Main road inlet pipe and bypass inlet pipe that pipe and refrigeration entrance branch and entrance point are connected with the import contact respectively；Wherein, institute State and heat the entrance point of entrance branch and be connected with the 3rd contact, the entrance point of the refrigeration entrance branch connects with the described 4th Point connection, the port of export of the main road inlet pipe is connected with the entrance point of the main road of second economizer, the bypass inlet pipe The port of export is connected with the bypass import of second economizer, and has been arranged in series bypass throttling arrangement on the bypass inlet pipe；
The outlet pipe of the main road of second economizer include outlet supervisor and with it is described outlet supervisor be connected heat outlet stool With refrigeration outlet stool, wherein, the port of export for heating outlet stool be connected with the 4th contact, it is described refrigeration outlet prop up The port of export of pipe is connected with the 3rd contact, and the outlet supervisor has been arranged in series main road throttling arrangement, described to heat out Check valve has been arranged in series respectively on mouth branch pipe and refrigeration outlet stool.
3. air-conditioning system unit according to claim 2, it is characterised in that
The first defrost pipeline includes the first inlet pipe and the first outlet pipe, wherein, the entrance point of first inlet pipe and described the The port of export of the main road throttling arrangement of one economizer is connected by controlling valve, and the port of export of first inlet pipe and described second is passed through The entrance point connection of the bypass of Ji device；The entrance point of first outlet pipe passes through with the port of export of the bypass of second economizer Control valve connection, the port of export of first outlet pipe is connected to first indoor heat exchanger with the described first pressure by controlling valve Between contracting machine；
The second defrost pipeline includes the second inlet pipe and the second outlet pipe, wherein, the entrance point of second inlet pipe and described the The port of export of the main road throttling arrangement of two economizers is connected by controlling valve, and the port of export of second inlet pipe and described first is passed through The entrance point connection of the bypass of Ji device；The entrance point of second outlet pipe passes through with the port of export of the bypass of first economizer Control valve connection, the port of export of second outlet pipe is connected to second indoor heat exchanger with the described second pressure by controlling valve Between contracting machine.
4. air-conditioning system unit according to claim 2, it is characterised in that
The control positioned at the bypass throttling arrangement upstream is also arranged in series on the bypass inlet pipe of first economizer Valve；
The control positioned at the bypass throttling arrangement upstream is also arranged in series on the bypass inlet pipe of second economizer Valve；
The first defrost pipeline includes the first inlet pipe and the first outlet pipe, wherein, the entrance point of first inlet pipe and described the The refrigeration entrance branch of one economizer is connected by controlling valve, and the port of export of first inlet pipe is connected to second warp Help device bypass inlet pipe the bypass throttling arrangement and the control valve between, the entrance point of first outlet pipe and described the The port of export of the bypass of two economizers is connected by controlling valve, and the port of export of first outlet pipe is described by controlling valve to be connected to Between first indoor heat exchanger and first compressor；
The second defrost pipeline includes the second inlet pipe and the second outlet pipe, wherein, the entrance point of second inlet pipe and described the The refrigeration entrance branch of two economizers is connected by controlling valve, and the port of export of first inlet pipe is connected to first warp Between the bypass throttling arrangement and the control valve of the bypass inlet pipe of Ji device；The entrance point of second outlet pipe and described The port of export of the bypass of one economizer is connected by controlling valve, and the port of export of second outlet pipe is described by controlling valve to be connected to Between second indoor heat exchanger and second compressor.
5. the air-conditioning system unit according to claim 3 or 4, it is characterised in that
It is described that to control valve be three-way control valve or two logical control valves.
6. air-conditioning system unit according to any one of claim 1 to 4, it is characterised in that the described first indoor heat exchange Device and second indoor heat exchanger are integrated into an integrated heat exchanger, have on the integrated heat exchanger and access first pressure Contract circulation the first refrigerant inlet and the first refrigerant exit and access second refrigerant inlet and the of the second compression circulation Two refrigerant exits.
7. a kind of air-conditioning system, it is characterised in that including air-conditioning system list any one of at least one claim 1 to 6 Unit.
8. air-conditioning system according to claim 7, it is characterised in that
The indoor heat exchanger of all air-conditioning system units is integrated into a total heat exchanger.
CN201611185047.5A 2016-12-20 2016-12-20 Air conditioning system unit and air conditioning system Active CN106766332B (en)

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