CN106642467A - Air-conditioner heat pump system of air-conditioner and trans-temperature-zone heating - Google Patents
Air-conditioner heat pump system of air-conditioner and trans-temperature-zone heating Download PDFInfo
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- CN106642467A CN106642467A CN201611238079.7A CN201611238079A CN106642467A CN 106642467 A CN106642467 A CN 106642467A CN 201611238079 A CN201611238079 A CN 201611238079A CN 106642467 A CN106642467 A CN 106642467A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 142
- 239000003507 refrigerant Substances 0.000 claims abstract description 87
- 238000005338 heat storage Methods 0.000 claims description 43
- 238000004378 air conditioning Methods 0.000 claims description 12
- 238000005057 refrigeration Methods 0.000 abstract description 12
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 11
- 238000010521 absorption reaction Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000001704 evaporation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009885 systemic effect Effects 0.000 description 3
- 238000002207 thermal evaporation Methods 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
-
- 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
- F25B41/40—Fluid line arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention discloses an air-conditioner heat pump system of an air-conditioner and trans-temperature-zone heating. The system comprises a main heating system used for refrigerant flow and a subsidiary heating system respectively; a first main heat exchanger of the main heating system can conduct heat exchange with a first subsidiary heat exchanger of the subsidiary heating system. According to the air-conditioner heat pump system, because the first main heat exchanger can conduct heat exchange with the first subsidiary heat exchanger, the heat heated by the subsidiary heating system improves environmental temperature at the heat source side of the main heating system, so that the main heating system conducts heating and does not frost at a low-temperature environment, and the refrigerating system keeps frost-free and efficient heating operation at the low-temperature environment. Therefore, the heat exchange efficiency of the air-conditioner heat pump system is guaranteed, and at the low-temperature environment, the heating capacity of the air energy heat pump is improved, and the energy efficiency ratio of the air energy heat pump is increased. Meanwhile, both the main heating system and the subsidiary heating system can independently conduct refrigeration or heating, or the main heating system and the subsidiary heating system can simultaneously conduct refrigeration or heating, and the working modes are more diversified. The invention further discloses an air-conditioner with the air-conditioner heat pump system.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly, it relates to a kind of air conditioner heat pump system heated across warm area, also
It is related to a kind of air-conditioning including the above-mentioned air conditioner heat pump system heated across warm area.
Background technology
Air energy heat pump product heating capacity size is limited by environment temperature, and when environment temperature is more than certain value, stream is arrived
The refrigerant of outdoor evaporator can absorb enough heat evaporating completelies, so as to improve system refrigerant circulation and heating capacity；When
Environment temperature be less than certain value when, flow to the refrigerant in outdoor evaporator because atmospheric heat deficiency without evaporating completely, make be
System refrigerant circulation declines, and than becoming big, exhaust is uprised press compression, easily causes low pressure or exhaust high temperature protection failure.
It is at this stage using air injection enthalpy-increasing technology, refrigeration system is cold to enable air to heat pump product suitable for low temperature environment
Condenser outlet refrigerant point one flows back to compressor by air injection enthalpy-increasing stream, improves system refrigerant circulation.Stream can so arrived
The refrigerant of outdoor evaporator tails off, and refrigerant evaporation amount and then diminishes, and along with the easy frosting of outdoor evaporator under low temperature environment, changes
Poor thermal efficiency, air quantity diminishes, and refrigerant evaporation amount is less, so as to cause low temperature environment under air energy heat pump product heating capacity it is low,
The rate of decay is fast and Energy Efficiency Ratio is low, and unit cannot be used normally under the ultra-low temperature surroundings such as northeast.
In sum, how to efficiently solve air energy heat pump product heating capacity under air conditioner low temperature environment it is low, decay speed
The fast and low problem of Energy Efficiency Ratio is spent, is current those skilled in the art's urgent problem.
The content of the invention
In view of this, first purpose of the invention is to provide a kind of air conditioner heat pump system heated across warm area, should be across
The structure design of the air conditioner heat pump system that warm area is heated can efficiently solve air energy heat pump product system under air conditioner low temperature environment
The problem that heat energy power is low, the rate of decay is fast and Energy Efficiency Ratio is low, second object of the present invention is to provide a kind of including above-mentioned across temperature
The air-conditioning of the air conditioner heat pump system that area heats.
In order to reach above-mentioned first purpose, the present invention provides following technical scheme：
A kind of air conditioner heat pump system heated across warm area, including the main heating for being respectively used to refrigerant flowing and auxiliary heat system
System；
The main heating includes main compressor, the first main heat exchanger, the second main heat exchanger and main cross valve；The master
Compressor is connected with the 4th interface of the main cross valve, the 3rd interface and second main heat exchanger of the main cross valve
First end connects, and the second end of second main heat exchanger is connected with the first end of first main heat exchanger, first master
Second end of heat exchanger is connected with the main cross valve second interface, and the main cross valve first interface connects with the main compressor
Connect；
The concurrent heating system includes auxiliary compressor, the first auxiliary heat exchanger, the second auxiliary heat exchanger and auxiliary cross valve；The auxiliary pressure
Contracting machine is connected with the 4th interface of the auxiliary cross valve, the 3rd interface of the auxiliary cross valve and the of the described first auxiliary heat exchanger
One bullet connects, and the second end of the first auxiliary heat exchanger is connected with the first end of the described second auxiliary heat exchanger, and described second auxiliary changes
Second end of hot device is connected with the second interface of the auxiliary cross valve, first interface and the auxiliary compressor of the auxiliary cross valve
Connection；First main heat exchanger can be with the described first auxiliary heat exchanger heat exchange.
Preferably, it is above-mentioned in the air conditioner heat pump system that warm area is heated, the second end of second main heat exchanger successively with
First throttle valve, the first check valve, the connection of main reservoir, the main reservoir is connected with the first interface of the 3rd main heat exchanger,
The second interface of the 3rd main heat exchanger passes through the second check valve, second throttle and first main heat exchange being sequentially connected
The first end connection of device；The first throttle valve and the first check valve two ends are parallel with the 3rd check valve, and described second is single
The 4th check valve is parallel with to valve and the second throttle two ends.
Preferably, it is above-mentioned in the air conditioner heat pump system that warm area is heated, it is additionally provided with the 3rd main heat exchanger and
The main increasing enthalpy heat exchanging part of three main heat exchanger body independences, the first interface of the main increasing enthalpy heat exchanging part passes sequentially through the 5th throttling
Valve, the first stop valve are connected with the main reservoir, and the second interface of the main increasing enthalpy heat exchanging part is connected with the main compressor.
Preferably, it is above-mentioned in the air conditioner heat pump system that warm area is heated, the first end of the second auxiliary heat exchanger successively with
3rd choke valve, the 3rd check valve, the connection of auxiliary reservoir, the auxiliary reservoir is connected with the first interface of the 3rd auxiliary heat exchanger,
The second interface of the 3rd auxiliary heat exchanger passes through the 4th check valve, the 4th choke valve and the described first auxiliary heat exchange being sequentially connected
The second end connection of device；3rd check valve and the 3rd choke valve two ends are parallel with the 5th check valve, and the described 4th is single
The 6th check valve is parallel with to valve and the 4th choke valve two ends.
Preferably, it is above-mentioned in the air conditioner heat pump system that warm area is heated, it is additionally provided with the 3rd auxiliary heat exchanger and
The auxiliary increasing enthalpy heat exchanging part of three auxiliary heat exchanger body independences, the first interface of the auxiliary increasing enthalpy heat exchanging part passes sequentially through the 6th throttling
Valve, the second stop valve are connected with the auxiliary reservoir, and the second interface of the auxiliary increasing enthalpy heat exchanging part is connected with the auxiliary compressor.
Preferably, it is above-mentioned in the air conditioner heat pump system that warm area is heated, it is provided with main accumulation of heat outside second main heat exchanger
Case, outside the second auxiliary heat exchanger auxiliary heat storage tank is provided with.
Preferably, it is above-mentioned in the air conditioner heat pump system that warm area is heated, the main heat storage tank and auxiliary heat storage tank difference
With end or auxiliary thermally coupled.
Preferably, above-mentioned in the air conditioner heat pump system that warm area is heated, first main heat exchanger is auxiliary with described first to be changed
Hot device is disposed adjacent.
Preferably, above-mentioned in the air conditioner heat pump system that warm area is heated, first main heat exchanger is auxiliary with described first to be changed
Hot device is integral type structure.
Using the present invention provide when the air conditioner heat pump system that warm area is heated, by main heating and concurrent heating system
Arrange, because the first main heat exchanger can be with the first auxiliary heat exchanger heat exchange, the heat heated so as to concurrent heating system is improving
Main heating heat source side environment temperature, makes main heating heat frost-free at low ambient temperatures, under realizing low temperature environment
Refrigeration system continues frostless efficient heating operation.So as to ensure the heat exchange efficiency of the air conditioner heat pump system heated across warm area, improve
Air energy heat pump product heating capacity and Energy Efficiency Ratio under low temperature environment.Meanwhile, main heating and concurrent heating system can be independent
Refrigeration is heated, or main heating and concurrent heating system can simultaneously be freezed or be heated, and mode of operation is more diversified.
In a preferred embodiment, the first auxiliary heat exchange of the first main heat exchanger of main heating and concurrent heating system
Device is connected, and under low temperature environment, main heating is absorbed heat by the first main heat exchanger, and concurrent heating system passes through the first auxiliary heat exchanger
Heat release, the heat that concurrent heating system is discharged improves the environment temperature for flowing into the main main heat exchanger of heating first, improves main system
Hot systems heat source side environment temperature, it is ensured that the frostless heating operation of system.
In order to reach above-mentioned second purpose, present invention also offers a kind of air-conditioning, the air-conditioning include any of the above-described kind across
The air conditioner heat pump system that warm area is heated.Because the above-mentioned air conditioner heat pump system heated across warm area has above-mentioned technique effect, tool
The air-conditioning for having the air conditioner heat pump system heated across warm area should also have corresponding technique effect.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of specific embodiment of air conditioner heat pump system heated across warm area；
Fig. 2 is the structural representation of the air conditioner heat pump system another kind specific embodiment heated across warm area；
Fig. 3 heats operating diagram for low temperature is frostless；
Fig. 4 is that end heats operating diagram simultaneously；
Fig. 5 is end refrigeration work schematic diagram simultaneously.
Specific embodiment
The embodiment of the invention discloses a kind of air conditioner heat pump system heated across warm area, to improve low temperature environment under air energy
Heat pump product heating capacity.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1-Fig. 5 is referred to, Fig. 1 is a kind of structural representation of specific embodiment of air conditioner heat pump system heated across warm area
Figure；Fig. 2 is the structural representation of the air conditioner heat pump system another kind specific embodiment heated across warm area；Fig. 3 is that low temperature is frostless
Heat operating diagram；Fig. 4 is that end heats operating diagram simultaneously；Fig. 5 is end refrigeration work schematic diagram simultaneously.
In a kind of specific embodiment, the air conditioner heat pump system heated across warm area that the present invention is provided includes that master heats and is
System and concurrent heating system.
Wherein, main heating includes main compressor 1, the first main heat exchanger 23, the second main heat exchanger 24 and main cross valve
29.Main compressor 1 is connected with the 4th interface D of main cross valve 29, the 3rd interface C and the second main heat exchanger 24 of main cross valve 29
First end connection, the second end of the second main heat exchanger 24 is connected with the first end of the first main heat exchanger 23, the first main heat exchanger
23 the second end is connected with second interface E of main cross valve 29, and the first interface S of main cross valve 29 is connected with main compressor 1.Specifically
, can also set gradually main hydraulic accumulator 30 between the first end of the second end of the second main heat exchanger 24 and the first main heat exchanger 23
With second throttle 21.Above-mentioned parts connect into the circulation stream of the main heating of across the warm area heating.
Concurrent heating system includes auxiliary compressor 12, the first auxiliary heat exchanger 22, the second auxiliary heat exchanger 19 and auxiliary cross valve 13.Auxiliary pressure
Contracting machine 12 is connected with the 4th interface D of auxiliary cross valve 13, the 3rd interface C of auxiliary cross valve 13 and the first of the first auxiliary heat exchanger 22
End connection, the second end of the first auxiliary heat exchanger 22 is connected with the first end of the second auxiliary heat exchanger 19, and the of the second auxiliary heat exchanger 19
Two ends are connected with second interface E of auxiliary cross valve 13, and the first interface S of auxiliary cross valve 13 is connected with auxiliary compressor 12.Above-mentioned zero
Part connects into the circulation stream of across the warm area heating concurrent heating system.First main heat exchanger 23 can be with the first auxiliary heat exchanger
22 heat exchanges.
Using the present invention provide when the air conditioner heat pump system that warm area is heated, by main heating and concurrent heating system
Arrange, that is, designed by double autonomous systems, due to the first main heat exchanger can with the first auxiliary heat exchanger heat exchange, so as to
The heat that concurrent heating system is heated makes main heating heat at low ambient temperatures improving main heating heat source side environment temperature
Frost-free, realizes refrigeration system under low temperature environment and continues frostless efficient heating operation.Absorb solar energy, warm up by concurrent heating system
The heats such as gas improve main heating heat source side environment temperature, so as to improve main refrigeration system heating to main heating
Heating capacity.Unit sustainable in the range of -25 DEG C～43 DEG C can be heated efficiently.Meanwhile, main heating and concurrent heating system are equal
Independent cooling or can heat, or main heating and concurrent heating system can simultaneously be freezed or be heated, mode of operation is more
For variation.
Further, in another kind of specific embodiment, main compressor 1 and the main cross valve 29 the 4th of main heating
Interface D connects, and the interface C of main cross valve 29 the 3rd is connected with the first end of the second main heat exchanger 24, and the of the second main heat exchanger 24
Two ends are connected with first throttle valve 27, and first throttle valve 27 is connected with the first check valve 28, the first check valve 28 and main reservoir
30 connections, main reservoir 30 is connected respectively with the first interface a of the first stop valve 2 and the 3rd main heat exchanger 4, the 3rd main heat exchanger
4 second interface b is connected with the second check valve 6, and the second check valve 6 is connected with second throttle 21, second throttle 21 and
The first end connection of one main heat exchanger 23, the second end of the first main heat exchanger 23 is connected with second interface E of main cross valve 29, and main four
The first interface S of port valve 29 is connected with main compressor 1, in the 3rd check valve of the two ends of 27 and first check valve of first throttle valve 28 parallel connection
26, in the 4th check valve 5 of the second check valve 6 and the parallel connection of the two ends of second throttle 21.By the connection of above-mentioned parts, constitute
The major cycle stream of the main heating of the system.
4 are additionally provided with the main increasing enthalpy heat exchanging part with the 3rd main heat exchanger body independence in 3rd main heat exchanger, and main increasing enthalpy is changed
The first interface c in hot portion passes sequentially through the 5th choke valve 3, the first stop valve 2 and is connected with main reservoir 30, main increasing enthalpy heat exchanging part
Second interface d is connected with main compressor 1.The first interface c of main increasing enthalpy heat exchanging part namely the 3rd interface of the 3rd main heat exchanger 4,
Second interface d of main increasing enthalpy heat exchanging part namely the 4th interface of the 3rd main heat exchanger 4.Namely in main reservoir 30 and main compression
The increasing enthalpy branch road of main heating can also be connected between machine 1.It is connected with the first stop valve 2 by main reservoir 30, first
Stop valve 2 is connected with the 5th choke valve 3, and the 5th choke valve 3 is connected with the 3rd interface c of the 3rd main heat exchanger 4, the 3rd main heat exchange
4th interface d of device 4 is connected with main compressor 1.Above-mentioned parts have connected into the increasing enthalpy stream of the main heating of the system.
Further, auxiliary compressor 12 is connected with the interface D of auxiliary cross valve 13 the 4th in concurrent heating system, auxiliary cross valve 13
Three interface C are connected with the first end of the first auxiliary heat exchanger 22, and the second end of the first auxiliary heat exchanger 22 is connected with the 4th choke valve 20,
4th choke valve 20 is connected with the 4th check valve 10, and the 4th check valve 10 is connected with the first interface m of the 3rd auxiliary heat exchanger 7, the
Second interface n of three auxiliary heat exchangers 7 is connected respectively with the stop valve 11 of auxiliary reservoir 14 and second, and auxiliary reservoir 14 is unidirectional with the 3rd
Valve 16 connects, and the 3rd check valve 16 is connected with the 3rd choke valve 17, the first end of the 3rd choke valve 17 and the second auxiliary heat exchanger 19
Connection, the second end of the second auxiliary heat exchanger 19 be connected with second interface E of auxiliary cross valve 13, the first interface S of auxiliary cross valve 13 and
Auxiliary compressor 12 connects, in the 6th check valve 8 of the 4th check valve 10 and the parallel connection of the two ends of the 4th choke valve 20, in the 3rd check valve 16
With the 5th check valve 15 of the two ends of the 3rd choke valve 17 parallel connection.By the connection of above-mentioned parts, the auxiliary heat system of the system is constituted
The major cycle stream of system.
The auxiliary increasing enthalpy heat exchanging part with the 3rd auxiliary heat exchanger body independence is additionally provided with 3rd auxiliary heat exchanger 7, auxiliary increasing enthalpy is changed
The first interface t in hot portion passes sequentially through the 6th choke valve 9, the second stop valve 11 and is connected with auxiliary reservoir 14, auxiliary increasing enthalpy heat exchanging part
Second interface s be connected with auxiliary compressor 12.Namely it is connected with concurrent heating system between auxiliary reservoir 14 and auxiliary compressor 12
Increasing enthalpy branch road.The first interface t of auxiliary increasing enthalpy heat exchanging part namely the 3rd interface of the 3rd auxiliary heat exchanger 7, auxiliary increasing enthalpy heat exchanging part
4th interface of second interface s namely the 3rd auxiliary heat exchanger 7.It is connected with the second stop valve 11 by auxiliary reservoir 14, second section
Only valve 11 is connected with the 6th choke valve 9, and the 6th choke valve 9 is connected with the 3rd interface t of the 3rd auxiliary heat exchanger 7, the 3rd auxiliary heat exchange
The interface s of device 7 the 4th is connected with auxiliary compressor 12.Above-mentioned parts have connected into the increasing enthalpy stream of the concurrent heating system of the system.
On the basis of the various embodiments described above, outside the second main heat exchanger 24 main heat storage tank 25, the second auxiliary heat exchanger are provided with
Auxiliary heat storage tank 18 is provided with outside 19.Further, main heat storage tank (25) and auxiliary heat storage tank (18) respectively with end or auxiliary thermally coupled.
And then main heat storage tank 25 and auxiliary heat storage tank 18 can realize difference in functionality with different ends.Namely pass through two independent cooling systems
System independent cooling or can be heated, and the heat storage tank of each system be connected with end, configured according to end and realized several functions.It is excellent
Choosing, auxiliary heat storage tank 18 can be auxiliary thermally coupled with various, and concurrent heating system can absorb the auxiliary heat such as heating installation, solar energy under low temperature environment
Measure to improve main heating heat source side environment temperature.For example, be provided with the second main heat exchanger 24 in heat storage tank 25, heat storage tank 25 with
End connects.It is provided with the second auxiliary heat exchanger 19 in heat storage tank 18, heat storage tank 18 and end and auxiliary thermally coupled.
In the various embodiments described above, the first main heat exchanger 23 can be disposed adjacent with the first auxiliary heat exchanger 22.Preferably,
One main heat exchanger 23 and the first auxiliary heat exchanger 22 are integral type structure.That is the first main heat exchanger 23 is linked to be with the first auxiliary heat exchanger 22
Integrally.First main heat exchanger 23 and the first auxiliary heat exchanger 22 are connected, under low temperature environment, main heating is by the first master
Heat exchanger 23 absorbs heat, and by the heat release of the first auxiliary heat exchanger 22, the heat that concurrent heating system is discharged improves the main system of inflow to concurrent heating system
The environment temperature of the first main heat exchanger of hot systems 23, improves main heating heat source side environment temperature, it is ensured that the frostless system of system
Heat operation.
The process and principle of each functional realiey of detailed description below heat pump：
The enforcement of frostless heat-production functions under worst cold case：
As shown in figure 3, when outdoor environment temperature is relatively low, two systems can according to demand start spray liquid enthalpy gain system, main system
Hot systems absorb the heat that heats of concurrent heating system to improve main heating heat source side operating ambient temperature, make main heating exist
Frostless operation under low temperature environment.
Specifically, in concurrent heating system, the refrigerant of HTHP flows into the interface of auxiliary cross valve 13 the 4th by auxiliary compressor 12
D, then flows to the first auxiliary heat exchanger 22 by the interface C of auxiliary cross valve 13 the 3rd, refrigerant in the first auxiliary heat exchanger 22 with flow through
Air carries out heat exchange, and the refrigerant after heat release cooling then flows to the 6th check valve 8 by the first auxiliary heat exchanger 22, then by the 6th
Check valve 8 flows to second interface m of the 3rd auxiliary heat exchanger 7, and refrigerant is then flowed to auxiliary by the first interface n of the 3rd auxiliary heat exchanger 7
Reservoir 14, then flows to the 3rd check valve 16 by auxiliary reservoir 14, and refrigerant then flows to the 3rd throttling by the 3rd check valve 16
Valve 17, the refrigerant after warp knuckle stream is flowed to the second auxiliary heat exchanger 19 in heat storage tank 18 by the 3rd choke valve 17, and refrigerant is auxiliary second
The heat of heat storage tank 18 or auxiliary hot heat of vaporization are absorbed in heat exchanger 19, the refrigerant after heat absorption flows to auxiliary four by the second auxiliary heat exchanger 19
Second interface E of port valve 13, finally flows back to auxiliary compressor 12 by the first interface S of auxiliary cross valve 13.Circulated by above-mentioned primary flow path, be
System completes heat-production functions of the concurrent heating system to the first auxiliary heat exchanger 22 under worst cold case.
In main heating, the refrigerant of HTHP flows into the interface D of main cross valve 29 the 4th by main compressor 1, then
Flowed to the second main heat exchanger 24 in heat storage tank 25 by the interface C of main cross valve 29 the 3rd, refrigerant in the second main heat exchanger 24 with
Heat transferring medium in heat storage tank 25 carries out heat exchange, and it is single that the refrigerant after heat release cooling then flows to the 3rd by the second main heat exchanger 24
To valve 26, then main reservoir 30 is flowed to by the 3rd check valve 26, refrigerant then flows to the He of the first stop valve 2 by main reservoir 30
The first interface a of the 3rd main heat exchanger 4, refrigerant carries out heat exchange, heat release drop in the 3rd main heat exchanger 4 with increasing enthalpy branch road refrigerant
Refrigerant after temperature then flows to the second check valve 6 by second interface b of the 3rd main heat exchanger 4, and refrigerant is then by the second check valve 6
Second throttle 21 is flowed to, the refrigerant after warp knuckle stream then flows to the first main heat exchanger 23 by second throttle 21, and refrigerant is
The interior suction thermal evaporation of one main heat exchanger 23, absorbs concurrent heating system heat and the refrigerant after atmospheric heat is flowed to by the first main heat exchanger 23
Second interface E of main cross valve 29, then flows back to compressor by the first interface S of main cross valve 29.Circulated by above-mentioned primary flow path, be
System completes heat-production functions of the main heating to heat storage tank 25 under worst cold case.
When the made shortage of heat of concurrent heating system, to guarantee that system is normally run, the first stop valve 2 dozens on increasing enthalpy branch road
Open, refrigerant is divided into two Jing after main reservoir 30, the refrigerant on increasing enthalpy branch road flows to the 5th choke valve 3, Jing by the first stop valve 2
Refrigerant after throttling is then flowed to the 3rd interface C of the 3rd main heat exchanger 4, that is, main increasing enthalpy heat exchanging part by the 5th choke valve 3
First interface, the refrigerant on increasing enthalpy branch road the systemic main refrigerating system coolant of the 3rd main heat exchanger 4 waste heat, to main flow
Road refrigerant is subcooled, the refrigerant after heat absorption evaporation by the 3rd main heat exchanger 4 the 4th interface D, that is, main increasing enthalpy heat exchanging part
Second interface flow back to main compressor 1.By the circulation of above-mentioned stream, system completes the enthalpy-increasing function of main heating.
Circulated by above-mentioned stream, main heating realizes at low ambient temperatures frostless heat-production functions.
Main heating is heated or heated by absorbing the heat Jing after concurrent heating system heating in air under low temperature environment
Water, heats to improve main heating heat source side environment temperature by concurrent heating system, makes main heating at low ambient temperatures may be used
Lasting, efficient and heating without frosting or water heating.
Hereinafter illustrate to two ends while the enforcement of heat-production functions：
As shown in figure 4, when two ends need to heat simultaneously, main heating is heated to heat storage tank 25, auxiliary heat system
System is heated to heat storage tank 18.
In main heating, the refrigerant of HTHP flows into the interface D of main cross valve 29 the 4th by main compressor 1, then
Flowed to the second main heat exchanger 24 in heat storage tank 25 by the interface C of main cross valve 29 the 3rd, refrigerant in the second main heat exchanger 24 with
Heat transferring medium in heat storage tank 25 carries out heat exchange, and it is single that the refrigerant after heat release cooling then flows to the 3rd by the second main heat exchanger 24
To valve 26, then main reservoir 30 is flowed to by the 3rd check valve 26, refrigerant then flows to respectively the first cut-off by main reservoir 30
The first interface a of the main heat exchanger 4 of valve 2 and the 3rd, refrigerant carries out heat exchange in the 3rd main heat exchanger 4 with increasing enthalpy branch road refrigerant,
Refrigerant after heat release cooling then flows to the second check valve 6 by second interface b of the 3rd main heat exchanger 4, and refrigerant is then by second
Check valve 6 flows to second throttle 21, and the refrigerant after warp knuckle stream then flows to the first main heat exchanger 23 by second throttle 21, cold
Matchmaker flows to main four-way in the interior suction thermal evaporation of the first main heat exchanger 23, the refrigerant in absorption air after heat by the first main heat exchanger 23
Second interface E of valve 29, then flows back to compressor by the first interface S of main cross valve 29.Circulated by above-mentioned primary flow path, system is completed
Heat-production functions of the main heating to heat storage tank 25 under worst cold case.
When flowing through the atmospheric heat of the first main heat exchanger 23 and being not enough, to guarantee that main heating is normally run, increasing enthalpy branch road
Upper first stop valve 2 is opened, and refrigerant is divided into two Jing after main reservoir 30, and the refrigerant on increasing enthalpy branch road is flowed by the first stop valve 2
To the 5th choke valve 3, the refrigerant after warp knuckle stream then flows to the interface C of the 3rd main heat exchanger 4 the 3rd, increasing enthalpy by the 5th choke valve 3
Refrigerant on branch road is subcooled in the waste heat of the systemic main heating refrigerant of the 3rd main heat exchanger 4 to primary flow path refrigerant,
Refrigerant after heat absorption evaporation flows back to main compressor 1 by the interface D of the 3rd main heat exchanger 4 the 4th.By the circulation of above-mentioned stream, system
Complete the enthalpy-increasing function of main heating.
In concurrent heating system, the refrigerant of HTHP flows into the interface D of auxiliary cross valve 13 the 4th by auxiliary compressor 12, then by
Second interface E of auxiliary cross valve 13 flows to the second auxiliary heat exchanger 19 in heat storage tank 18, and refrigerant is in the second auxiliary heat exchanger 19 and stores
Heat transferring medium in hot tank 18 carries out heat exchange, and it is unidirectional that the refrigerant after heat release cooling then flows to the 5th by the second auxiliary heat exchanger 19
Valve 15, then flows to auxiliary reservoir 14 by the 5th check valve 15, and refrigerant then flows to the He of the second stop valve 11 by auxiliary reservoir 14
The first interface n of the 3rd auxiliary heat exchanger 7, refrigerant carries out heat exchange, heat release drop in the 3rd auxiliary heat exchanger 7 with increasing enthalpy branch road refrigerant
Refrigerant after temperature then flows to the 4th check valve 10 by second interface m of the 3rd auxiliary heat exchanger 7, and refrigerant is then by the 4th check valve
10 flow to the 4th choke valve 20, and the refrigerant after warp knuckle stream then flows to the first auxiliary heat exchanger 22 by the 4th choke valve 20, and refrigerant exists
The interior suction thermal evaporation of first auxiliary heat exchanger 22, the refrigerant in absorption air after heat flows to auxiliary cross valve 13 by the first auxiliary heat exchanger 22
3rd interface C, then flows back to compressor by the first interface S of auxiliary cross valve 13.Circulated by above-mentioned primary flow path, system completes low temperature
Heat-production functions of the concurrent heating system to heat storage tank 18 under operating mode.
When flowing through the atmospheric heat of the first auxiliary heat exchanger 22 and being not enough, to guarantee that concurrent heating system normally runs, on increasing enthalpy branch road
Second stop valve 11 is opened, and refrigerant is divided into two Jing after auxiliary reservoir 14, and the refrigerant on increasing enthalpy branch road is flowed by the second stop valve 11
To the 6th choke valve 9, the refrigerant after warp knuckle stream is then flowed to the 3rd interface t of the 3rd auxiliary heat exchanger 7 by the 6th choke valve 9,
It is exactly the first interface of auxiliary increasing enthalpy heat exchanging part, the refrigerant on increasing enthalpy branch road is cold in the systemic concurrent heating system of the 3rd auxiliary heat exchanger 7
The waste heat of matchmaker, is subcooled to concurrent heating system primary flow path refrigerant, and the refrigerant after heat absorption evaporation is connect by the 4th of the 3rd auxiliary heat exchanger 7
Mouth s, that is, the second interface of auxiliary increasing enthalpy heat exchanging part, flow back to auxiliary compressor 12.By the circulation of above-mentioned stream, system completes auxiliary
The enthalpy-increasing function of hot systems.
Hereinafter illustrate to two ends while the enforcement of refrigerating function：
As shown in figure 5, when two ends need refrigeration simultaneously, main heating is freezed to heat storage tank 25, auxiliary heat system
System freezes to heat storage tank 18.
Specifically, in main heating, the refrigerant of HTHP flows into the interface of main cross valve 29 the 4th by main compressor 1
D, then flows to the first main heat exchanger 23 by second interface E of main cross valve 29, refrigerant in the first main heat exchanger 23 with flow through
Air carries out heat exchange, and the refrigerant after heat release cooling then flows to the 4th check valve 5 by the first main heat exchanger 23, then by the 4th
Check valve 5 flows to second interface b of the 3rd main heat exchanger 4, and refrigerant is then by the first interface a flow direction masters of the 3rd main heat exchanger 4
Reservoir 30, then flows to the first check valve 28 by main reservoir 30, and refrigerant then flows to first throttle by the first check valve 28
Valve 27, the refrigerant after warp knuckle stream is flowed to the second main heat exchanger 24 in heat storage tank 25 by first throttle valve 27, and refrigerant is in the second master
The heat of heat storage tank 25 or its end heat of vaporization are absorbed in heat exchanger 24, the refrigerant after heat absorption flows to master by the second main heat exchanger 24
The interface C of cross valve 29 the 3rd, finally flows back to main compressor 1 by the first interface S of main cross valve 29.Circulated by above-mentioned primary flow path,
System completes main heating to heat storage tank 25 and its refrigerating function of end.
In concurrent heating system, the refrigerant of HTHP flows into the interface D of auxiliary cross valve 13 the 4th by auxiliary compressor 12, then by
The interface C of auxiliary cross valve 13 the 3rd flows to the first auxiliary heat exchanger 22, and refrigerant is carried out in the first auxiliary heat exchanger 22 with the air for flowing through
Heat exchange, the refrigerant after heat release cooling then flows to the 6th check valve 8 by the first auxiliary heat exchanger 22, then by the 6th check valve 8
Second interface m of the 3rd auxiliary heat exchanger 7 is flowed to, refrigerant then flows to auxiliary reservoir by the first interface n of the 3rd auxiliary heat exchanger 7
14, then the 3rd check valve 16 is flowed to by auxiliary reservoir 14, refrigerant then flows to the 3rd choke valve 17, Jing by the 3rd check valve 16
Refrigerant after throttling is flowed to the second auxiliary heat exchanger 19 in heat storage tank 18 by the 3rd choke valve 17, and refrigerant is in the second auxiliary heat exchanger 19
The interior absorption heat of heat storage tank 18 or auxiliary hot heat of vaporization, the refrigerant after heat absorption flows to auxiliary cross valve 13 the by the second auxiliary heat exchanger 19
Two interface E, finally flow back to auxiliary compressor 12 by the first interface S of auxiliary cross valve 13.Circulated by above-mentioned primary flow path, system completes auxiliary
Hot systems are to heat storage tank 18 and its refrigerating function of end.
To sum up, the invention heats to improve main heating heat source side environment temperature by concurrent heating system, realizes system
It is frostless to continue heat-production functions.Preferably, the system is provided with main heating and concurrent heating system, and two systems can independent cooling or system
Heat, it is also possible to while freezing or heating.Preferably, the main heating heat exchanger of the system is linked to be one with concurrent heating system heat exchanger
Body, heat exchanger heat exchange form, position and structure are unrestricted.Preferably, the system is exchanged heat by the concurrent heating system being connected
Device heat release makes main heating heat exchanger persistently heat without frosting improving main heating heat exchanger environment temperature.Preferably,
The main heating of the system and concurrent heating system are equipped with heat storage tank, and heat storage tank does not receive version, heat transferring medium, volume size
Limited with heat exchange mode.Preferably, the heat storage tank of system two is connected with end, and several functions are realized in the different ends of apolegamy.
Preferably, the system concurrent heating system heat storage tank is also thermally coupled with auxiliary, and auxiliary heat can be the energy such as heating installation, solar energy, air energy, underground heat
Source.Preferably, this across the air conditioner heat pump system that warm area is heated have the advantages that it is frostless heat, persistently heat, quickly heating, be
System has the advantage that do not limited by statement in itself.
In sum, the heat pump for providing using the present invention, can persistently heat at low ambient temperatures：The system passes through
Frostless design, under low temperature environment, main heating absorbs heat that concurrent heating system heats to improve main heating heat source side fortune
Row environment temperature, makes the evaporator non-frost operation at low ambient temperatures of main heating, realizes that refrigeration system continues under low temperature environment
Heat-production functions.Simultaneously heating capacity can be improved under low temperature environment：The heats such as solar energy, heating installation are absorbed come to master by concurrent heating system
Heating is heated, and main heating heat source side environment temperature is improved, so as to improve main refrigeration system heating capacity.And realize
Across warm area work：Unit is sustainable in the range of -25 DEG C～43 DEG C efficiently to be heated.
Based on the air conditioner heat pump system heated across warm area provided in above-described embodiment, present invention also offers a kind of empty
Adjust, the air-conditioning includes the air conditioner heat pump system that any one is heated across warm area in above-described embodiment.Because the air-conditioning is employed
The air conditioner heat pump system heated across warm area in embodiment is stated, so the beneficial effect of the air-conditioning refer to above-described embodiment.
Each embodiment is described by the way of progressive in this specification, and what each embodiment was stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope for causing.
Claims (10)
1. a kind of air conditioner heat pump system heated across warm area, it is characterised in that heat including the master for being respectively used to refrigerant flowing and be
System and concurrent heating system；
The main heating includes main compressor (1), the first main heat exchanger (23), the second main heat exchanger (24) and main cross valve
(29)；The main compressor (1) is connected with the 4th interface of the main cross valve (29), and the 3rd of the main cross valve (29) connects
Mouth is connected with the first end of second main heat exchanger (24), and the second end of second main heat exchanger (24) and described first is led
The first end connection of heat exchanger (23), the second end of first main heat exchanger (23) and main cross valve (29) second interface
Connection, main cross valve (29) first interface is connected with the main compressor (1)；
The concurrent heating system includes auxiliary compressor (12), the first auxiliary heat exchanger (22), the second auxiliary heat exchanger (19) and auxiliary cross valve
(13)；The auxiliary compressor (12) is connected with the 4th interface of the auxiliary cross valve (13), and the 3rd of the auxiliary cross valve (13) the
Interface is connected with the first bullet of the described first auxiliary heat exchanger (22), second end and described second of the first auxiliary heat exchanger (22)
The first end connection of auxiliary heat exchanger (19), the second end of the second auxiliary heat exchanger (19) and the second of the auxiliary cross valve (13)
Interface connects, and the first interface of the auxiliary cross valve (13) is connected with the auxiliary compressor (12)；First main heat exchanger
(23) can be with the described first auxiliary heat exchanger (22) heat exchange.
2. the air conditioner heat pump system heated across warm area according to claim 1, it is characterised in that second main heat exchanger
(24) the second end is connected successively with first throttle valve (27), the first check valve (28), main reservoir (30), the main reservoir
(30) it is connected with the first interface (23) of the 3rd main heat exchanger (4), the second interface (22) of the 3rd main heat exchanger (4) passes through
The second check valve (6) for being sequentially connected, second throttle (21) are connected with the first end of first main heat exchanger (23)；It is described
First throttle valve (27) and first check valve (28) two ends are parallel with the 3rd check valve (26), second check valve (6)
The 4th check valve (5) is parallel with the second throttle (21) two ends.
3. the air conditioner heat pump system heated across warm area according to claim 2, it is characterised in that the 3rd main heat exchanger
Interior (4) are additionally provided with the main increasing enthalpy heat exchanging part with the 3rd main heat exchanger body independence, the first interface of the main increasing enthalpy heat exchanging part
C () passes sequentially through the 5th choke valve (3), the first stop valve (2) and is connected with the main reservoir (30), the main increasing enthalpy heat exchanging part
Second interface (d) be connected with the main compressor (1).
4. the air conditioner heat pump system heated across warm area according to claim 1, it is characterised in that the second auxiliary heat exchanger
(19) first end is connected successively with the 3rd choke valve (17), the 3rd check valve (16), auxiliary reservoir (14), the auxiliary reservoir
(14) be connected with the first interface (n) of the 3rd auxiliary heat exchanger (7), the second interface (m) of the 3rd auxiliary heat exchanger (7) by according to
4th check valve (10) of secondary connection, the 4th choke valve (20) are connected with the second end of the described first auxiliary heat exchanger (22)；It is described
3rd check valve (16) and the 3rd choke valve (17) two ends are parallel with the 5th check valve (15), the 4th check valve (10)
The 6th check valve (8) is parallel with the 4th choke valve (20) two ends.
5. the air conditioner heat pump system heated across warm area according to claim 4, it is characterised in that the 3rd auxiliary heat exchanger
(7) the auxiliary increasing enthalpy heat exchanging part with the 3rd auxiliary heat exchanger body independence, the first interface of the auxiliary increasing enthalpy heat exchanging part are additionally provided with
T () passes sequentially through the 6th choke valve (9), the second stop valve (11) and is connected with the auxiliary reservoir (14), the auxiliary increasing enthalpy heat exchange
The second interface (s) in portion is connected with the auxiliary compressor (12).
6. the air conditioner heat pump system heated across warm area according to any one of claim 1-5, it is characterised in that described second
It is provided with outside main heat exchanger (24) outside main heat storage tank (25), the second auxiliary heat exchanger (19) and is provided with auxiliary heat storage tank (18).
7. the air conditioner heat pump system heated across warm area according to claim 6, it is characterised in that the main heat storage tank (25)
With the auxiliary heat storage tank (18) respectively with end or auxiliary thermally coupled.
8. the air conditioner heat pump system heated across warm area according to any one of claim 1-5, it is characterised in that described first
Main heat exchanger (23) is disposed adjacent with the described first auxiliary heat exchanger (22).
9. the air conditioner heat pump system heated across warm area according to claim 8, it is characterised in that first main heat exchanger
(23) it is integral type structure with the described first auxiliary heat exchanger (22).
10. a kind of air-conditioning, it is characterised in that include the air-conditioning heat pump heated across warm area as described in any one of claim 1-9
System.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016109571657 | 2016-10-27 | ||
| CN201610957165 | 2016-10-27 |
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| Publication Number | Publication Date |
|---|---|
| CN106642467A true CN106642467A (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611238079.7A Pending CN106642467A (en) | 2016-10-27 | 2016-12-28 | Air-conditioner heat pump system of air-conditioner and trans-temperature-zone heating |
| CN201621463622.9U Expired - Fee Related CN206410354U (en) | 2016-10-27 | 2016-12-28 | A kind of air-conditioning and air conditioner heat pump system |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621463622.9U Expired - Fee Related CN206410354U (en) | 2016-10-27 | 2016-12-28 | A kind of air-conditioning and air conditioner heat pump system |
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| CN (2) | CN106642467A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642467A (en) * | 2016-10-27 | 2017-05-10 | 广东高而美制冷设备有限公司 | Air-conditioner heat pump system of air-conditioner and trans-temperature-zone heating |
| CN113566451B (en) * | 2020-04-29 | 2022-12-30 | 约克广州空调冷冻设备有限公司 | Heat pump system |
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| GB894011A (en) * | 1959-01-10 | 1962-04-18 | Arthur Richard Anthony Wiseman | Heat pump |
| CN2682344Y (en) * | 2003-12-11 | 2005-03-02 | 河南新飞电器有限公司 | Heat pump installation for cold area |
| CN101270937A (en) * | 2008-05-16 | 2008-09-24 | 王全龄 | Auxiliary heat-tracing ultra-low temperature air source heat pump air conditioner |
| CN201237397Y (en) * | 2008-05-16 | 2009-05-13 | 王全龄 | Auxiliary heat-tracing ultra-low temperature air source heat pump air conditioner |
| CN101900458A (en) * | 2010-05-13 | 2010-12-01 | 济源市贝迪地能中央空调设备有限公司 | Gas-liquid intermediate-low temperature double-heat source cascade high-temperature heat pump |
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| CN105674623A (en) * | 2016-03-14 | 2016-06-15 | 黑龙江宏利天扬新能源技术开发有限公司 | Cascade air source heat pump system suitable for ultralow-temperature environment |
| CN206410354U (en) * | 2016-10-27 | 2017-08-15 | 广东高而美制冷设备有限公司 | A kind of air-conditioning and air conditioner heat pump system |
-
2016
- 2016-12-28 CN CN201611238079.7A patent/CN106642467A/en active Pending
- 2016-12-28 CN CN201621463622.9U patent/CN206410354U/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB894011A (en) * | 1959-01-10 | 1962-04-18 | Arthur Richard Anthony Wiseman | Heat pump |
| CN2682344Y (en) * | 2003-12-11 | 2005-03-02 | 河南新飞电器有限公司 | Heat pump installation for cold area |
| CN101270937A (en) * | 2008-05-16 | 2008-09-24 | 王全龄 | Auxiliary heat-tracing ultra-low temperature air source heat pump air conditioner |
| CN201237397Y (en) * | 2008-05-16 | 2009-05-13 | 王全龄 | Auxiliary heat-tracing ultra-low temperature air source heat pump air conditioner |
| CN101900458A (en) * | 2010-05-13 | 2010-12-01 | 济源市贝迪地能中央空调设备有限公司 | Gas-liquid intermediate-low temperature double-heat source cascade high-temperature heat pump |
| CN202813914U (en) * | 2012-07-12 | 2013-03-20 | 秦皇岛长丰太和新能源有限公司 | Ultralow-temperature air source heat pump unit system |
| CN105674623A (en) * | 2016-03-14 | 2016-06-15 | 黑龙江宏利天扬新能源技术开发有限公司 | Cascade air source heat pump system suitable for ultralow-temperature environment |
| CN206410354U (en) * | 2016-10-27 | 2017-08-15 | 广东高而美制冷设备有限公司 | A kind of air-conditioning and air conditioner heat pump system |
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| CN206410354U (en) | 2017-08-15 |
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Application publication date: 20170510 |