CN102635977B - Low-temperature full-heat recycling type air-cooling heat pump set - Google Patents

Low-temperature full-heat recycling type air-cooling heat pump set Download PDF

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Publication number
CN102635977B
CN102635977B CN201110458769.4A CN201110458769A CN102635977B CN 102635977 B CN102635977 B CN 102635977B CN 201110458769 A CN201110458769 A CN 201110458769A CN 102635977 B CN102635977 B CN 102635977B
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China
Prior art keywords
valve
heat exchanger
economizer
air
cross valve
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CN102635977A (en
Inventor
黄作忠
陈胜辉
李鹏
刘斌
王双
鄢利平
罗晓燕
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Guangdong Euroklimat Air Conditioning and Refrigeration Co Ltd
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Guangdong Euroklimat Air Conditioning and Refrigeration Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/52Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The invention provides a low-temperature full-heat recycling type air-cooling heat pump set which comprises a compressor, a gas-liquid separator, an air side fin type heat exchanger, a first four-way valve, a second four-way valve, an economizer, a first electronic expansion valve, a second electronic expansion valve, a first one-way valve, a second one-way valve, a third one-way valve, a first throttling device, a first liquid storing device, a second liquid storing device, a first filter, a second filter, a third filter, an air conditioner side heat exchanger and a domestic hot water side heat exchanger, wherein the compressor comprises an air suction end, an air discharging end and a middle air suction end; the air conditioner side heat exchanger comprises a 1 end and a 2 end; the domestic hot water side heat exchanger comprises a 1 end and a 2 end; the economizer comprises a 1 end, a 2 end, a 3 end and a 4 end; and the 1 end and the 3 end of the economizer are communicated with each other and the 2 end and the 4 end of the economizer are communicated with each other. Compared with the prior art, the low-temperature full-heat recycling type air-cooling heat pump set can provide enough heat supplying capability and water heating capability under a low-temperature environment, can randomly adjust, and can guarantee that water heating and heat generating requirements of a user can be met under the low-temperature environment.

Description

The full recovery type heat Air-Cooled Heat Pump Unit of a kind of low temperature
Technical field
The present invention relates to air-conditioning technical field, particularly relate to the full recovery type heat Air-Cooled Heat Pump Unit of a kind of low temperature.
Background technology
Along with the continuous increase of China's economic level, and the improving constantly of living standard, people also constantly improve the demand of air-conditioning.Air-conditioning day by day becomes the basic facilities of building, becomes the necessity in people's live and work.
For a long time, North China mainly heats with coal, gas, oil, but above-mentioned resource is subject to the each side restrictions such as price, environment, traffic condition.Because Air-Cooled Heat Pump Unit is than heating equipments such as gas heater, electric heater, solar water heaters, have that safety, energy-saving and environmental protection, life-span are long, the plurality of advantages such as toxin expelling not, be subject to the extensive concern of various circles of society.But, the restriction of climate condition, common Air-Cooled Heat Pump Unit is subject to serious restriction in North China, if common Air-Cooled Heat Pump Unit is not done any improvement and is just applied to severe cold area, just there will be Winter heat supply not enough, compressor exhaust temperature is too high, even cannot be in problems such as whole winter operations.These all can bring obstruction to the development of Air-Cooled Heat Pump Unit.
Therefore, for addressing the above problem, provide a kind of full recovery type heat wind-cooling type heat pump of low temperature unit that enough heating capacities can be provided under low temperature environment, to meet the technology of the heating demand of severe cold area, seem particularly important.
Summary of the invention
The object of the invention is to avoid weak point of the prior art and a kind of full recovery type heat wind-cooling type heat pump of low temperature unit that enough heating capacities can be provided under low temperature environment is provided.
Object of the present invention is achieved through the following technical solutions:
Provide a kind of low temperature full recovery type heat Air-Cooled Heat Pump Unit, included compressor, gas-liquid separator, air side fins formula heat exchanger, the first cross valve, the second cross valve, economizer, the first electric expansion valve, the second electric expansion valve, the first check valve, the second check valve, the 3rd check valve, first throttle device, the first reservoir, the second reservoir, the first filter, the second filter, the 3rd filter, air-conditioning side heat exchanger and domestic hot-water's side heat exchanger; Wherein, described compressor includes suction end, exhaust end and middle suction end; Described air-conditioning side heat exchanger includes 1 end and 2 ends; Described domestic hot-water's side heat exchanger includes 1 end and 2 ends; Described economizer includes 1 end, 2 ends, 3 ends and 4 ends, and 1 end and 3 ends of described economizer are connected, and 2 ends and 4 ends of described economizer are connected;
The exhaust end of described compressor is connected with the D2 end of described the second cross valve, the E2 end of described the second cross valve is connected with 1 end of described domestic hot-water's side heat exchanger, the S2 end of described the second cross valve is connected with the arrival end of described gas-liquid separator, the port of export of described gas-liquid separator is connected with the suction end of described compressor, the C2 end of described the second cross valve is connected with the D1 end of described the first cross valve, the E1 end of described the first cross valve is connected with 2 ends of described air-conditioning side heat exchanger, the S1 end of described the first cross valve is connected with the S2 end of described the second cross valve and the arrival end of described gas-liquid separator respectively, the C1 end of described the first cross valve is connected with one end of described air side fins formula heat exchanger, the other end of described air side fins formula heat exchanger is connected with one end of described the second electric expansion valve and one end of described the first check valve respectively, the other end of described the second electric expansion valve is connected with one end of described the second filter, the other end of described the second filter respectively with one end of described the first filter, 3 ends of one end of described first throttle device and described economizer connect, the other end of described the first filter is connected with one end of described the first electric expansion valve, the other end of described the first electric expansion valve is connected with the arrival end of described the first reservoir and 1 end of described air-conditioning side heat exchanger respectively, the other end of described first throttle device is connected with 2 ends of described economizer, 4 ends of described economizer are connected with the middle suction end of described compressor, 1 end of described economizer respectively with the other end of described the first check valve, one end of one end of described the second check valve and described the 3rd check valve connects, the other end of described the 3rd check valve is connected with one end of described the 3rd filter, the other end of described the 3rd filter is connected with one end of described the second reservoir, the other end of described the second reservoir is connected with 2 ends of described domestic hot-water's side heat exchanger, the other end of described the second check valve is connected with one end of described the first reservoir,
When described the first cross valve and described the second cross valve all must not electricity, and described the second electronic expansion valve opening is 0 o'clock, E1, the S1 end of 1 end of the D2 of the exhaust end of described compressor and described the second cross valve, C2 end, D1, the C1 end of described the first cross valve, described air side fins formula heat exchanger, described the first check valve, described economizer and 3 ends, described the first filter, described the first electric expansion valve, described air-conditioning side heat exchanger, described the first cross valve, described gas-liquid separator, and the suction end of described compressor is connected successively; 3 ends of described economizer are connected successively with 2 ends of described first throttle device, described economizer and the middle suction end of 4 ends, described compressor;
When described the first cross valve obtain electric and described the second cross valve must not electricity, and described the first electronic expansion valve opening is 0 o'clock, the exhaust end of described compressor is connected with the suction end of C1, the S1 end of 3 ends, described the second filter, described the second electric expansion valve, described air side fins formula heat exchanger, described the first cross valve, described gas-liquid separator, described compressor successively with 1 end of D2, the C2 end of described the second cross valve, D1, the E1 end of described the first cross valve, described air-conditioning side heat exchanger, described the first reservoir, described the second check valve, described economizer; 3 ends of described economizer are connected successively with 2 ends of described first throttle device, described economizer and the middle suction end of 4 ends, described compressor;
When described the first cross valve must not electricity and described the second cross valve obtain electric, and described the second electronic expansion valve opening is 0 o'clock, the exhaust end of described compressor is connected with the suction end of S1 end, described gas-liquid separator, described compressor successively with D2, the E2 end of described the second cross valve, described domestic hot-water's side heat exchanger, described the second reservoir, described the 3rd filter, described the 3rd check valve, 1 end of described economizer and the E1 of 3 ends, described the first filter, described the first electric expansion valve, described air-conditioning side heat exchanger, described the first cross valve; 3 ends of described economizer are connected successively with 2 ends of described first throttle device, described economizer and the middle suction end of 4 ends, described compressor;
When described the first cross valve and described the second cross valve all obtain electric, and described the first electronic expansion valve opening is 0 o'clock, the exhaust end of described compressor is connected with S1 end, described gas-liquid separator, described compressor air suction end with D2, the E2 end of described the second cross valve, described domestic hot-water's side heat exchanger, described the second reservoir, described the 3rd check valve, 1 end of described economizer and the C1 of 3 ends, described the second filter, described the second electric expansion valve, described air side fins formula heat exchanger, described the first cross valve; 3 ends of described economizer are connected successively with 2 ends of described first throttle device, described economizer and the middle suction end of 4 ends, described compressor.
Wherein, described first throttle device is any in heating power expansion valve, capillary and electric expansion valve.
Wherein, described the 3rd check valve is parallel with bypass loop, described bypass loop includes the second throttling arrangement and magnetic valve, one end of described the 3rd check valve is connected with described the second throttling arrangement, the other end of described the second throttling arrangement is connected with one end of described magnetic valve, and the other end of described magnetic valve is connected with the other end of described the 3rd check valve.
Wherein, described the second throttling arrangement is any in heating power expansion valve, capillary and electric expansion valve.
Wherein, described compressor is the compressor that tonifying Qi increases enthalpy type.
Wherein, a side of described air side fins formula heat exchanger is provided with blower fan.
Beneficial effect of the present invention:
A full recovery type heat Air-Cooled Heat Pump Unit, includes compressor, gas-liquid separator, air side fins formula heat exchanger, the first cross valve, the second cross valve, economizer, the first electric expansion valve, the second electric expansion valve, the first check valve, the second check valve, the 3rd check valve, first throttle device, the first reservoir, the second reservoir, the first filter, the second filter, the 3rd filter, air-conditioning side heat exchanger, domestic hot-water's side heat exchanger; Wherein, compressor includes suction end, exhaust end and middle suction end; Air-conditioning side heat exchanger includes 1 end and 2 ends; Domestic hot-water's side heat exchanger includes 1 end and 2 ends; Economizer includes 1 end, 2 ends, 3 ends and 4 ends, and 1 end and 3 ends of economizer are connected, and 2 ends and 4 ends of economizer are connected.Compared with prior art, the present invention can provide enough heating capacity and hot water ability under low temperature environment, and can arbitrarily regulate, and has guaranteed can meet user to hot water under low temperature environment and has heated demand.
Accompanying drawing explanation
Utilize accompanying drawing to be described further invention, but embodiment in accompanying drawing does not form any limitation of the invention, for those of ordinary skill in the art, is not paying under the prerequisite of creative work, can also obtain according to the following drawings other accompanying drawing.
Fig. 1 is the structural representation of the full recovery type heat Air-Cooled Heat Pump Unit of a kind of low temperature of the present invention.
In Fig. 1, include:
1---compressor, 2---the second cross valve, 3---the first cross valve, 4---air side fins formula heat exchanger, 5---the second electric expansion valve, 6---the second filter, 7---the first filter, 8---the first check valve, 9---first throttle device, 10---the first electric expansion valve, 11---economizer, 12---the second throttling arrangement, 13---the 3rd check valve, 14---magnetic valve, 15---the second check valve, 16---the first reservoir, 17---air-conditioning side heat exchanger, 18---domestic hot-water's side heat exchanger, 19---the second reservoir, 20---the 3rd filter, 21---gas-liquid separator.
The specific embodiment
The invention will be further described with the following Examples.
One of specific embodiment of the full recovery type heat Air-Cooled Heat Pump Unit of a kind of low temperature of the present invention, as shown in Figure 1, include compressor 1, gas-liquid separator 21, air side fins formula heat exchanger 4, the first cross valve 3, the second cross valve 2, economizer 11, the first electric expansion valve 10, the second electric expansion valve 5, the first check valve 8, the second check valve 15, the 3rd check valve 13, first throttle device 9, the first reservoir 16, the second reservoir 19, the first filter 7, the second filter 6, the 3rd filter 20, air-conditioning side heat exchanger 17 and domestic hot-water's side heat exchanger 18, wherein, described compressor 1 includes suction end, exhaust end and middle suction end, described air-conditioning side heat exchanger 17 includes 1 end and 2 ends, described domestic hot-water's side heat exchanger 18 includes 1 end and 2 ends, described economizer 11 includes 1 end, 2 ends, 3 ends and 4 ends, and 1 end and 3 ends of described economizer 11 are connected, and 2 ends and 4 ends of described economizer 11 are connected,
The exhaust end of described compressor 1 is connected with the D2 end of described the second cross valve 2, the E2 end of described the second cross valve 2 is connected with 1 end of described domestic hot-water's side heat exchanger 18, the S2 end of described the second cross valve 2 is connected with the arrival end of described gas-liquid separator 21, the port of export of described gas-liquid separator 21 is connected with the suction end of described compressor 1, the C2 end of described the second cross valve 2 is connected with the D1 end of described the first cross valve 3, the E1 end of described the first cross valve 3 is connected with 2 ends of described air-conditioning side heat exchanger 17, the S1 end of described the first cross valve 3 is connected with the S2 end of described the second cross valve 2 and the arrival end of described gas-liquid separator 21 respectively, the C1 end of described the first cross valve 3 is connected with one end of described air side fins formula heat exchanger 4, the other end of described air side fins formula heat exchanger 4 is connected with one end of described the second electric expansion valve 5 and one end of described the first check valve 8 respectively, the other end of described the second electric expansion valve 5 is connected with one end of described the second filter 6, the other end of described the second filter 6 respectively with one end of described the first filter 7, 3 ends of one end of described first throttle device 9 and described economizer 11 connect, the other end of described the first filter 7 is connected with one end of described the first electric expansion valve 10, the other end of described the first electric expansion valve 10 is connected with the arrival end of described the first reservoir 16 and 1 end of described air-conditioning side heat exchanger 17 respectively, the other end of described first throttle device 9 is connected with 2 ends of described economizer 11, 4 ends of described economizer 11 are connected with the middle suction end of described compressor 1, 1 end of described economizer 11 respectively with the other end of described the first check valve 8, one end of one end of described the second check valve 15 and described the 3rd check valve 13 connects, the other end of described the 3rd check valve 13 is connected with one end of described the 3rd filter 20, the other end of described the 3rd filter 20 is connected with one end of described the second reservoir 19, the other end of described the second reservoir 19 is connected with 2 ends of described domestic hot-water's side heat exchanger 18, the other end of described the second check valve 15 is connected with one end of described the first reservoir 16.
When described the first cross valve 3 and described the second cross valve 2 all must not electricity, and described the second electric expansion valve 5 apertures are 0 o'clock, the D2 of the exhaust end of described compressor 1 and described the second cross valve 2, C2 end, the D1 of described the first cross valve 3, C1 end, described air side fins formula heat exchanger 4, described the first check valve 8, 1 end of described economizer 11 and 3 ends, described the first filter 7, described the first electric expansion valve 10, described air-conditioning side heat exchanger 17, the E1 of described the first cross valve 3, S1 end, described gas-liquid separator 21, and the suction end of described compressor 1 is connected successively, 3 ends of described economizer 11 are connected with the middle suction end of 4 ends, described compressor 1 successively with 2 ends of described first throttle device 9, described economizer 11,
When described the first cross valve 3 electric and described the second cross valve 2 must not be electric, and described the first electric expansion valve 10 apertures are 0 o'clock, the D2 of the exhaust end of described compressor 1 and described the second cross valve 2, C2 end, the D1 of described the first cross valve 3, E1 end, described air-conditioning side heat exchanger 17, described the first reservoir 16, described the second check valve 15, 1 end of described economizer 11 and 3 ends, described the second filter 6, described the second electric expansion valve 5, described air side fins formula heat exchanger 4, the C1 of described the first cross valve 3, S1 end, described gas-liquid separator 21, the suction end of described compressor 1 is connected successively, 3 ends of described economizer 11 are connected with the middle suction end of 4 ends, described compressor 1 successively with 2 ends of described first throttle device 9, described economizer 11,
When described the first cross valve 3 must not obtain electric by electric and described the second cross valve 2, and described the second electric expansion valve 5 apertures are 0 o'clock, the D2 of the exhaust end of described compressor 1 and described the second cross valve 2, E2 end, described domestic hot-water's side heat exchanger 18, described the second reservoir 19, described the 3rd filter 20, described the 3rd check valve 13, 1 end of described economizer 11 and 3 ends, described the first filter 7, described the first electric expansion valve 10, described air-conditioning side heat exchanger 17, the E1 of described the first cross valve 3 and S1 end, described gas-liquid separator 21, the suction end of described compressor 1 is connected successively, 3 ends of described economizer 11 are connected with the middle suction end of 4 ends, described compressor 1 successively with 2 ends of described first throttle device 9, described economizer 11,
When described the first cross valve 3 and described the second cross valve 2 all obtain electric, and described the first electric expansion valve 10 apertures are 0 o'clock, the exhaust end of described compressor 1 is connected with S1 end, described gas-liquid separator 21, described compressor 1 suction end with D2, the E2 end of described the second cross valve 2, described domestic hot-water's side heat exchanger 18, described the second reservoir 19, described the 3rd check valve 13,1 end of described economizer 11 and the C1 of 3 ends, described the second filter 6, described the second electric expansion valve 5, described air side fins formula heat exchanger 4, described the first cross valve 3; 3 ends of described economizer 11 are connected with the middle suction end of 4 ends, described compressor 1 successively with 2 ends of described first throttle device 9, described economizer 11.
Of the present inventionly can under low temperature environment, provide enough heating capacity and hot water abilities, and can arbitrarily regulate, guarantee can meet user to hot water under low temperature environment and heat demand.
Concrete, described first throttle device 9 is any in heating power expansion valve, capillary and electric expansion valve.
Concrete, described the 3rd check valve 13 is parallel with bypass loop, described bypass loop includes the second throttling arrangement 12 and magnetic valve 14, one end of described the 3rd check valve 13 is connected with described the second throttling arrangement 12, the other end of described the second throttling arrangement 12 is connected with one end of described magnetic valve 14, and the other end of described magnetic valve 14 is connected with the other end of described the 3rd check valve 13.
Concrete, described the second throttling arrangement 12 is any in heating power expansion valve, capillary and electric expansion valve.
Concrete, described compressor 1 is the compressor 1 of tonifying Qi increasing enthalpy type.
Concrete, a side of described air side fins formula heat exchanger 4 is provided with blower fan.
Finally should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention; but not limiting the scope of the invention; although the present invention has been done to explain with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement technical scheme of the present invention, and not depart from essence and the scope of technical solution of the present invention.

Claims (6)

1. the full recovery type heat Air-Cooled Heat Pump Unit of low temperature, is characterized in that: include compressor, gas-liquid separator, air side fins formula heat exchanger, the first cross valve, the second cross valve, economizer, the first electric expansion valve, the second electric expansion valve, the first check valve, the second check valve, the 3rd check valve, first throttle device, the first reservoir, the second reservoir, the first filter, the second filter, the 3rd filter, air-conditioning side heat exchanger and domestic hot-water's side heat exchanger; Wherein, described compressor includes suction end, exhaust end and middle suction end; Described air-conditioning side heat exchanger includes 1 end and 2 ends; Described domestic hot-water's side heat exchanger includes 1 end and 2 ends; Described economizer includes 1 end, 2 ends, 3 ends and 4 ends, and 1 end and 3 ends of described economizer are connected, and 2 ends and 4 ends of described economizer are connected;
The exhaust end of described compressor is connected with the D2 end of described the second cross valve, the E2 end of described the second cross valve is connected with 1 end of described domestic hot-water's side heat exchanger, the S2 end of described the second cross valve is connected with the arrival end of described gas-liquid separator, the port of export of described gas-liquid separator is connected with the suction end of described compressor, the C2 end of described the second cross valve is connected with the D1 end of described the first cross valve, the E1 end of described the first cross valve is connected with 2 ends of described air-conditioning side heat exchanger, the S1 end of described the first cross valve is connected with the S2 end of described the second cross valve and the arrival end of described gas-liquid separator respectively, the C1 end of described the first cross valve is connected with one end of described air side fins formula heat exchanger, the other end of described air side fins formula heat exchanger is connected with one end of described the second electric expansion valve and one end of described the first check valve respectively, the other end of described the second electric expansion valve is connected with one end of described the second filter, the other end of described the second filter respectively with one end of described the first filter, 3 ends of one end of described first throttle device and described economizer connect, the other end of described the first filter is connected with one end of described the first electric expansion valve, the other end of described the first electric expansion valve is connected with the arrival end of described the first reservoir and 1 end of described air-conditioning side heat exchanger respectively, the other end of described first throttle device is connected with 2 ends of described economizer, 4 ends of described economizer are connected with the middle suction end of described compressor, 1 end of described economizer respectively with the other end of described the first check valve, one end of one end of described the second check valve and described the 3rd check valve connects, the other end of described the 3rd check valve is connected with one end of described the 3rd filter, the other end of described the 3rd filter is connected with one end of described the second reservoir, the other end of described the second reservoir is connected with 2 ends of described domestic hot-water's side heat exchanger, the other end of described the second check valve is connected with one end of described the first reservoir,
When described the first cross valve and described the second cross valve all must not electricity, and described the second electronic expansion valve opening is 0 o'clock, E1, the S1 end of 1 end of the D2 of the exhaust end of described compressor and described the second cross valve, C2 end, D1, the C1 end of described the first cross valve, described air side fins formula heat exchanger, described the first check valve, described economizer and 3 ends, described the first filter, described the first electric expansion valve, described air-conditioning side heat exchanger, described the first cross valve, described gas-liquid separator, and the suction end of described compressor is connected successively; 3 ends of described economizer are connected successively with 2 ends of described first throttle device, described economizer and the middle suction end of 4 ends, described compressor;
When described the first cross valve obtain electric and described the second cross valve must not electricity, and described the first electronic expansion valve opening is 0 o'clock, the exhaust end of described compressor is connected with the suction end of C1, the S1 end of 3 ends, described the second filter, described the second electric expansion valve, described air side fins formula heat exchanger, described the first cross valve, described gas-liquid separator, described compressor successively with 1 end of D2, the C2 end of described the second cross valve, D1, the E1 end of described the first cross valve, described air-conditioning side heat exchanger, described the first reservoir, described the second check valve, described economizer; 3 ends of described economizer are connected successively with 2 ends of described first throttle device, described economizer and the middle suction end of 4 ends, described compressor;
When described the first cross valve must not electricity and described the second cross valve obtain electric, and described the second electronic expansion valve opening is 0 o'clock, the exhaust end of described compressor is connected with the suction end of S1 end, described gas-liquid separator, described compressor successively with D2, the E2 end of described the second cross valve, described domestic hot-water's side heat exchanger, described the second reservoir, described the 3rd filter, described the 3rd check valve, 1 end of described economizer and the E1 of 3 ends, described the first filter, described the first electric expansion valve, described air-conditioning side heat exchanger, described the first cross valve; 3 ends of described economizer are connected successively with 2 ends of described first throttle device, described economizer and the middle suction end of 4 ends, described compressor;
When described the first cross valve and described the second cross valve all obtain electric, and described the first electronic expansion valve opening is 0 o'clock, the exhaust end of described compressor is connected with S1 end, described gas-liquid separator, described compressor air suction end with D2, the E2 end of described the second cross valve, described domestic hot-water's side heat exchanger, described the second reservoir, described the 3rd filter, described the 3rd check valve, 1 end of described economizer and the C1 of 3 ends, described the second filter, described the second electric expansion valve, described air side fins formula heat exchanger, described the first cross valve; 3 ends of described economizer are connected successively with 2 ends of described first throttle device, described economizer and the middle suction end of 4 ends, described compressor.
2. the full recovery type heat Air-Cooled Heat Pump Unit of a kind of low temperature according to claim 1, is characterized in that: described first throttle device is any in heating power expansion valve, capillary and electric expansion valve.
3. the full recovery type heat Air-Cooled Heat Pump Unit of a kind of low temperature according to claim 2, it is characterized in that: described the 3rd check valve is parallel with bypass loop, described bypass loop includes the second throttling arrangement and magnetic valve, one end of described the 3rd check valve is connected with described the second throttling arrangement, the other end of described the second throttling arrangement is connected with one end of described magnetic valve, and the other end of described magnetic valve is connected with the other end of described the 3rd check valve.
4. the full recovery type heat Air-Cooled Heat Pump Unit of a kind of low temperature according to claim 3, is characterized in that: described the second throttling arrangement is any in heating power expansion valve, capillary and electric expansion valve.
5. the full recovery type heat Air-Cooled Heat Pump Unit of a kind of low temperature according to claim 1, is characterized in that: described compressor is the compressor that tonifying Qi increases enthalpy type.
6. the full recovery type heat Air-Cooled Heat Pump Unit of a kind of low temperature according to claim 1, is characterized in that: a side of described air side fins formula heat exchanger is provided with blower fan.
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