CN103398518A - Liquid accumulator - Google Patents

Liquid accumulator Download PDF

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Publication number
CN103398518A
CN103398518A CN2013103461838A CN201310346183A CN103398518A CN 103398518 A CN103398518 A CN 103398518A CN 2013103461838 A CN2013103461838 A CN 2013103461838A CN 201310346183 A CN201310346183 A CN 201310346183A CN 103398518 A CN103398518 A CN 103398518A
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CN
China
Prior art keywords
reservoir
throttling
cylinder
pressure
refrigerant
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Granted
Application number
CN2013103461838A
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Chinese (zh)
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CN103398518B (en
Inventor
荣国华
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荣国华
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Priority to CN201120141549.4 priority Critical
Priority to CN201120141549 priority
Priority to CN2011201415494 priority
Application filed by 荣国华 filed Critical 荣国华
Priority to CN201310346183.8A priority patent/CN103398518B/en
Publication of CN103398518A publication Critical patent/CN103398518A/en
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Publication of CN103398518B publication Critical patent/CN103398518B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F24F12/002Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an intermediate heat-transfer fluid
    • F24F12/003Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an intermediate heat-transfer fluid using a heat pump
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B29/00Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
    • F25B29/003Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/52Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56Heat recovery units

Abstract

The invention provides a liquid accumulator. Whether a heat pump system is in a refrigeration working condition or a heating working condition, the liquid accumulator is located on the high-pressure side of the system all the time, redundant high-pressure liquid refrigerant is always stored in the liquid accumulator, stable operation of the system is facilitated, the liquid accumulator can also have the throttling function and replaces an expansion throttler, and the heat pump system is made to be more simplified.

Description

Reservoir
Technical field
The invention belongs to the vapour compression refrigeration field, be specifically related to the reservoir for heat pump.
Background technology
Usually reservoir is contained between condenser and expansion throttling device, when the heat pump refrigerating capacity reduces, the unnecessary high pressure liquid refrigerant of a part is stored in reservoir, when the heat pump inverted running, reservoir is between evaporimeter and expansion throttling device, unnecessary high pressure liquid refrigerant can only be stored in pipeline or evaporimeter, has increased the resistance of ducting, the system fluctuation of service.
Summary of the invention
The present invention proposes a kind of Novel liquid receiver, no matter heat pump is cooling condition or heating condition, this reservoir is in the high-pressure side of system all the time, namely between condenser and expansion throttling device, unnecessary like this high pressure liquid refrigerant always is stored in reservoir, is conducive to system stable operation.
The accompanying drawing explanation
Fig. 1 is air-cylinder type reservoir configurations figure
Fig. 2 is the diaphragm type reservoir structural map
Fig. 3 is the heat pump figure that adopts two-way expansion throttling device
Fig. 4 is the heat pump figure that adopts unidirectional expansion throttling device
Fig. 5 adopts the heat pump figure with complete throttling function reservoir
Fig. 6 is the heat pump figure that adopts the gravity current reservoir
Fig. 7 is the air-cylinder type reservoir configurations figure (1) with electric expansion valve
Fig. 8 is the air-cylinder type reservoir configurations figure (2) with electric expansion valve
Fig. 9 is the diaphragm type reservoir structural map with electric expansion valve
Description of reference numerals:
1, 4, 9, 12, the refrigerant circulation pipe, 2, 11, cylinder end piece, 3, 10, 26, 27, device for drying and filtering, 5, cylinder, 6, piston, 7, the throttle orifice pipe, 8, heat-insulation layer, 13, tank body, 14, barrier film, 15, grid, 16, compressor, 17, four-way change-over valve, 18, condenser, 19, 25, 30, reservoir, 20, two-way expansion throttling device, 21, evaporimeter, 22, gas-liquid separator, 23, 24, 33, unidirectional expansion throttling device, 28, 29, 31, 32, 34, 35, magnetic valve, 36, electric expansion valve, 37, motor, 38, drive link, 39, spool, 40, valve seat, 41, support, 42, fluid reservoir
Concrete implementing method
Fig. 1 is air-cylinder type reservoir configurations figure, this reservoir is comprised of cylinder 5, piston 6, cylinder end piece 2,11, device for drying and filtering 3,10, refrigerant circulation pipe 1,4,9,12 etc., it is contained on the refrigerant circulation line between evaporimeter, condenser, refrigerant circulation pipe 1,12 is connected with evaporimeter, condenser respectively, refrigerant circulation pipe 4,9 is connected with two-way expansion throttling device respectively, refrigerant circulation pipe 1,4 and 9,12 is connected on respectively on cylinder end piece 2,11, with cylinder 5, communicate, the mouth of pipe is near the bottom of cylinder end piece.Device for drying and filtering 3,10 is housed in cylinder end piece 2,11, it is comprised of drier and filter, and drier can adopt molecular sieve etc., and filter can adopt screen pack etc., for impurity and the moisture that filters cold-producing medium.piston 6 can be in the interior slip of cylinder 5, when supposing the system carries out kind of refrigeration cycle, high pressure liquid refrigerant from condenser enters cylinder end piece 11 by refrigerant circulation pipe 12, be dried after filter 10 is processed and enter cylinder 5, the unnecessary high pressure liquid refrigerant of a part is stored in cylinder 5, a part enters into two-way expansion throttling device by refrigerant circulation pipe 9 again, by throttling, it is low-pressure, liquid refrigerant, by refrigerant circulation pipe 4, from cylinder end piece 2, flow back into cylinder 5, finally by device for drying and filtering 3, refrigerant circulation pipe 1 flows out again cylinder 5, enter in evaporimeter.Because an end in cylinder 5 is high pressure liquid refrigerant, the other end is low-pressure, liquid refrigerant, in piston 6 both sides, form pressure reduction, thereby pushing piston 6 moves to low-pressure end from high-pressure side, in figure, is to move from right to left, till pushing up while arriving cylinder end piece 2.Between piston 6 right sides and cylinder end piece 11, form so a larger cavity space, guarantee that unnecessary high pressure liquid refrigerant stores wherein.When system heats circulation time, the cold-producing medium reverse flow, the left side of piston 6 becomes high-pressure side, and right side becomes low-pressure side, and it is pushed to right-hand member, and till pushing up while arriving cylinder end piece 11, unnecessary high pressure liquid refrigerant is stored in the cylinder 5 in piston 6 left sides.
Piston 6 is with fine throttle orifice pipe 7, and the high pressure liquid refrigerant of trace can be throttled to low-pressure side from throttle orifice pipe 7, also may have the micro-fit clearance of high pressure liquid refrigerant between piston 6 and cylinder wall and be throttled to low-pressure side.Throttle orifice pipe 7 two ends can be with reclinate tubule, and it extend into below liquid level, guarantees that the liquid refrigerant of bottom is by throttling.Heat-insulation layer 8 is arranged in piston 6, can reduce the heat transfer of both sides cold-producing medium.Like this, by the throttling of fine throttle orifice pipe 7, reservoir has the function of incomplete throttling, and most of high pressure liquid refrigerant also will enter into two-way expansion throttling device by refrigerant circulation pipe 9, realizes complete throttling.When heat pump was out of service, the high-low pressure cold-producing medium of expansion throttling device both sides can be realized balance fast by throttle orifice pipe 7, thereby shortened the start-up time of next time, and the startup of compressor is also more steady.Also can open throttle orifice pipe 7 on the edge or cylinder wall of piston 6, form the groove of a throttling.
Borehole enlargement when throttle orifice pipe 7, or take other measure, make whole high-pressure liquid refrigeration be throttled to low-pressure side by throttle orifice pipe 7, do not need the throttling of two-way expansion throttling device, thereby cancelled refrigerant circulation pipe 4,9, the air-cylinder type reservoir only has refrigerant circulation pipe 1,12 with evaporimeter, condenser, to be connected respectively, and the function of existing liquid storage, have again the function of complete throttling.
When throttle orifice pipe 7, cancel, all high pressure liquid refrigerant will be by the throttling of two-way expansion throttling device, and the air-cylinder type reservoir only has the function of liquid storage, and does not have the function of throttling.
Fig. 2 is the diaphragm type reservoir structural map, and it is comprised of tank body 13, barrier film 14, device for drying and filtering 3,10, refrigerant circulation pipe 1,4,9,12 etc.Its method of attachment in refrigeration system is identical with the air-cylinder type reservoir in Fig. 1.Barrier film 14 is high strength, non-leakage elasticity or flexible material, and it is positioned at the central authorities of tank body 13, is divided into independently space, two of left and right.When system-down, pressure balance, barrier film 14 is in the relaxed state of arbitrary shape.In the bottom of tank body 13, be connected with refrigerant circulation pipe 1,4,9,12 and device for drying and filtering 3,10, refrigerant circulation pipe 1,4 is connected with barrier film 14 leftward space, refrigerant circulation pipe 9,12 is connected with barrier film 14 rightward space, and throttle orifice pipe 7 is connected barrier film 14 spaces, both sides.When refrigerant circulation pipe 9,12 connects high-pressure side, high pressure liquid refrigerant enters by refrigerant circulation pipe 12, be dried after filter 10 is processed and enter tank body 13, the unnecessary high pressure liquid refrigerant of a part stores in it, a part enters into two-way expansion throttling device by refrigerant circulation pipe 9 again, by throttling, is low-pressure, liquid refrigerant, by refrigerant circulation pipe 4, flows back in tank, finally by device for drying and filtering 3, refrigerant circulation pipe 1, flow out again tank body, enter in evaporimeter.Because right side is high pressure liquid refrigerant, left side is low-pressure, liquid refrigerant, in barrier film 14 both sides, forms pressure reduction, barrier film 14 stretches left or expands, and is close to the inwall of tank body 13, on right side, forms larger space, high pressure liquid refrigerant is circulation cycle therein, and unnecessary part stores wherein; Otherwise, the cold-producing medium reverse flow, barrier film 14 expands to the right.Grid 15 can stop barrier film 14 to stretch downwards, prevents from stopping up the refrigerant circulation pipe mouth of pipe.
Air-cylinder type reservoir with Fig. 1 is the same, the aperture by changing throttle orifice pipe 7 or take other measure, and diaphragm type reservoir also has incomplete throttling, the function of throttling fully, or does not have the function of throttling.
Fig. 3 is the heat pump figure that adopts two-way expansion throttling device, refrigerant circulation pipe 1,4,9,12 on reservoir 19 connects respectively evaporimeter 21, two-way expansion throttling device 20, condenser 18, two-way expansion throttling device 20 can adopt capillary etc., and the present invention simplifies heat pump more.
Fig. 4 is the heat pump figure that adopts unidirectional expansion throttling device, and the flow direction of unidirectional expansion throttling device 23,24 is opposite, can adopt electric expansion valve etc.When refrigeration, unidirectional expansion throttling device 23 is opened, and 24 close; When heating, unidirectional expansion throttling device 24 is opened, and 23 close.Also can adopt other combining form, guarantee that the combination of this expansion throttling device has the function of bidirectional throttle.
Fig. 5 adopts the heat pump figure with complete throttling function reservoir, due to reservoir 25, has the function of complete throttling and liquid storage, and it has cancelled two-way expansion throttling device 20, unidirectional expansion throttling device 23,24 in Fig. 3,4, and heat pump is greatly simplified.
In Fig. 6, reservoir 30 is connected across the two ends of two-way expansion throttling device 20 by magnetic valve 28,29, and the side of being located thereon, and is positioned at the below of condenser 18, evaporimeter 21.When carrying out kind of refrigeration cycle, condenser 18 is during as condenser, magnetic valve 28,35 is opened, all the other are closed, magnetic valve 35 is connected on the air inlet end of condenser 18, with reservoir 30 inner refrigerant liquid levels, be connected, can guarantee that high pressure liquid refrigerant relies on self gravitation turnover reservoir 30, and shwoot or the vaporization of liquid refrigerant can not occur.when heating circulation, evaporimeter 21 is during as condenser, magnetic valve 29, 34 open, all the other are closed, magnetic valve 34 is connected on the air inlet end of evaporimeter 21, with reservoir 30 inner refrigerant liquid levels, be connected, can guarantee that high pressure liquid refrigerant relies on self gravitation turnover reservoir 30, and shwoot or the vaporization of liquid refrigerant can not occur, if magnetic valve 34 cuts out, magnetic valve 31, 32, expansion throttling device 33 is opened, can utilize the flash steam that reservoir 30 produces to mend enthalpy and improve suction temperature for compressor 16 increases gas, improve operating condition, improve heat pump winter heating efficiency.Reservoir 30 can be described as the gravity current reservoir.
The air-cylinder type reservoir of Fig. 7 is with electric expansion valve 36, by motor 37, drive link 38, spool 39, support 41 etc., formed, it is contained in the both sides of cylinder end piece 2,11, on piston 6, the two ends of throttle orifice pipe 7 are with the valve seat 40 that matches with spool 39, be used to flow and the pressure of regulating cold-producing medium.in figure, the right side of piston 6 is high-pressure side, store high pressure liquid refrigerant, left side is low-pressure end, right side electric expansion valve 36 is not worked, left side electric expansion valve 36 is in running order, when the needs adjusting refrigerant flow rate, motor 37 rotations, pull drive link 38, gap and aperture between regulating spool 39 and valve seat 40, thereby regulate flow and the pressure of cold-producing medium, support 41 is for fixed conveyor bar 38, fluid reservoir 42 is communicated with cylinder 5, can keep the liquid level of cold-producing medium higher than throttle orifice pipe 7, shorten the length of cylinder 5, the A/F that fluid reservoir 42 is communicated with cylinder 5 should be greater than the thickness of piston 6.When the refrigeration system change working, the left side of piston 6 is high-pressure side, and right side is low-pressure end, and piston 6 slides into right side, and the valve seat 40 on throttle orifice pipe 7 right sides matches with the spool 39 of right side electric expansion valve 36, right side electric expansion valve 36 work, not the working of left side.
Fig. 8 is another kind of air-cylinder type reservoir with electric expansion valve, electric expansion valve 36 is contained in the two ends of cylinder 5, throttle orifice pipe 7 is contained on cylinder block, one end opening is with valve seat 40, the spacing of both ends open is greater than the thickness of piston 6, and support 41 is for the slip of fixed conveyor bar 38 and brake piston 6.
Fig. 9 is the diaphragm type reservoir with electric expansion valve, and when right side is high-pressure side, left side is low-pressure end, and right side electric expansion valve 36 is not worked, its spool 39 standard-sized sheets, and left side electric expansion valve 36 is in running order, and its spool 39 is in adjustment state; Otherwise opposite.
The above, be only better implementing method of the present invention, not the present invention done to any pro forma restriction.Any simple modification, equivalent variations and modification according to technical spirit of the present invention is done above implementing method, all belong to protection scope of the present invention.

Claims (8)

1. for the reservoir of heat pump, it is characterized in that, it is contained between evaporimeter and condenser, no matter heat pump is refrigerating operaton or heating operation, this reservoir is in the high-pressure side of system all the time, and unnecessary high pressure liquid refrigerant always is stored in reservoir.
2. reservoir according to claim 1, it is characterized in that, it is a kind of air-cylinder type reservoir, mainly by cylinder, piston, cylinder end piece, device for drying and filtering, the refrigerant circulation pipe forms, cylinder end piece at the cylinder two ends with symmetry, on each cylinder end piece with two refrigerant circulation pipes, one is the cold-producing medium feed tube, one is the cold-producing medium drain pipe, wherein one connects the expansion throttling device, another root connects evaporimeter or condenser, cylinder end piece is with device for drying and filtering, when cold-producing medium passes in and out cylinder by the refrigerant circulation pipe, to process through device for drying and filtering, piston can move in cylinder, it moves to low-pressure end from high-pressure side, thereby in cylinder, form the space that stores high pressure liquid refrigerant, a high pressure liquid refrigerant part flows to the expansion throttling device, unnecessary part stores wherein, with or without expansion throttling device on piston or cylinder wall, the air-cylinder type reservoir is connected on the condenser of refrigeration system and the refrigerant circulation pipe between evaporimeter, and be connected with the expansion throttling device, guarantee circulation and the throttling of cold-producing medium.
3. reservoir according to claim 1, it is characterized in that, it is a kind of diaphragm type reservoir, mainly by tank body, barrier film, device for drying and filtering, the refrigerant circulation pipe forms, barrier film adopts elasticity or flexible material, it is positioned at the central authorities of tank body, be divided into two separate space in left and right, in the bottom of tank body, be connected with refrigerant circulation pipe and device for drying and filtering, form two symmetric bodies, both or airtight partition, or be connected by expansion throttling device, on each symmetric body with two refrigerant circulation pipes, one is the cold-producing medium feed tube, one is the cold-producing medium drain pipe, wherein one connects the expansion throttling device, another root connects evaporimeter or condenser, each is with device for drying and filtering on two symmetric bodies, when cold-producing medium passes in and out tank body by the refrigerant circulation pipe, to process through device for drying and filtering, the refrigerant circulation pipe is connected with the space of tank body barrier film both sides, when refrigerant circulation pipe one side joint high-pressure side, during another side joint low-pressure end, barrier film stretches or expands from high side to low side, in high-pressure side, form the space of larger storage high pressure liquid refrigerant, a high pressure liquid refrigerant part flows to the expansion throttling device, unnecessary part stores wherein, diaphragm type reservoir is connected between the condenser and evaporimeter of refrigeration system, and be connected with the expansion throttling device, guarantee circulation and the throttling of cold-producing medium.
4. reservoir according to claim 1, it is characterized in that, it is a kind of gravity current reservoir, it is connected across the two ends of two-way expansion throttling device by two refrigerant tubings, and the side of being located thereon, and be positioned at the below of condenser, evaporimeter, it is with preventing liquid refrigerant shwoot and the device that flash steam is drawn, and liquid refrigerant relies on self gravitation turnover reservoir.
5. according to claim 2 with 3 described reservoirs, is characterized in that, during without throttling arrangement, it does not have the function of throttling when reservoir; During with throttling arrangement, it has the function of incomplete throttling, or has the function of complete throttling when reservoir, and when having the function of complete throttling, reservoir is not connected with the expansion throttling device.
6. heat pump according to claim 1, is characterized in that, it is equipped with two-way expansion throttling device, or the combination of unidirectional expansion throttling device.
7. air-cylinder type reservoir according to claim 2, is characterized in that, can be with fluid reservoir on cylinder block, and the A/F that fluid reservoir is communicated with cylinder should be greater than the thickness of piston.
8. reservoir according to claim 5, is characterized in that, it can, with electric expansion valve, make it have the function of complete throttling.
CN201310346183.8A 2011-05-06 2012-03-05 Reservoir Active CN103398518B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201120141549.4 2011-05-06
CN201120141549 2011-05-06
CN2011201415494 2011-05-06
CN201310346183.8A CN103398518B (en) 2011-05-06 2012-03-05 Reservoir

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Application Number Priority Date Filing Date Title
CN201310346183.8A CN103398518B (en) 2011-05-06 2012-03-05 Reservoir

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CN201210055160.7A Division CN102767876B (en) 2011-05-06 2012-03-05 Heat pump heat recovery air-conditioning unit

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CN103398518A true CN103398518A (en) 2013-11-20
CN103398518B CN103398518B (en) 2016-07-06

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Family Applications (7)

Application Number Title Priority Date Filing Date
CN2011103455147A Pending CN102767875A (en) 2011-05-06 2011-11-04 Air conditioning unit for hot recovery of heat pump
CN201210463902XA Withdrawn CN102914011A (en) 2011-05-06 2012-03-05 Heat recovery air-conditioning machine set
CN201310346183.8A Active CN103398518B (en) 2011-05-06 2012-03-05 Reservoir
CN2013101721277A Withdrawn CN103277950A (en) 2011-05-06 2012-03-05 Liquid reservoir
CN2013100568867A Withdrawn CN103075786A (en) 2011-05-06 2012-03-05 Heat-recovery air conditioning unit
CN201210055160.7A Active CN102767876B (en) 2011-05-06 2012-03-05 Heat pump heat recovery air-conditioning unit
CN2013102930566A Pending CN103322656A (en) 2011-05-06 2012-03-05 Heat recycling air conditioner set

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Application Number Title Priority Date Filing Date
CN2011103455147A Pending CN102767875A (en) 2011-05-06 2011-11-04 Air conditioning unit for hot recovery of heat pump
CN201210463902XA Withdrawn CN102914011A (en) 2011-05-06 2012-03-05 Heat recovery air-conditioning machine set

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Application Number Title Priority Date Filing Date
CN2013101721277A Withdrawn CN103277950A (en) 2011-05-06 2012-03-05 Liquid reservoir
CN2013100568867A Withdrawn CN103075786A (en) 2011-05-06 2012-03-05 Heat-recovery air conditioning unit
CN201210055160.7A Active CN102767876B (en) 2011-05-06 2012-03-05 Heat pump heat recovery air-conditioning unit
CN2013102930566A Pending CN103322656A (en) 2011-05-06 2012-03-05 Heat recycling air conditioner set

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CN (7) CN102767875A (en)
WO (1) WO2012152199A1 (en)

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CN103398518B (en) 2016-07-06
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CN102767875A (en) 2012-11-07

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