CN203518094U - Multi-connected heat recovery air-conditioner system - Google Patents
Multi-connected heat recovery air-conditioner system Download PDFInfo
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- CN203518094U CN203518094U CN201320574612.2U CN201320574612U CN203518094U CN 203518094 U CN203518094 U CN 203518094U CN 201320574612 U CN201320574612 U CN 201320574612U CN 203518094 U CN203518094 U CN 203518094U
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Abstract
The utility model discloses a multi-connected heat recovery air-conditioner system. The multi-connected heat recovery air-conditioner system comprises an indoor unit and an outdoor unit. The indoor unit comprises a domestic water heater used for providing hot domestic water, a floor-heating heat exchanger used for supplying heat in a floor-heating mode, and a traditional refrigerating/heating air conditioner. Four-way valves are arranged in the system, and different operation conditions of the air-conditioner system and combination of the different operation conditions are achieved by selecting opening and closing of valve ports of the four-way valves. According to the multi-connected heat recovery air-conditioner system, the domestic water and floor-heating water are treated separately, and therefore the quality and temperature of the domestic water can be guaranteed, and the phenomenon that due to the fact that refrigerating fluid is reserved inside the indoor unit when a part of the indoor unit does not operate, the work efficiency of the air-conditioner system is lowered can be prevented.
Description
Technical field
The utility model relates to multi-connected air conditioner, relates in particular to a kind of multiple Air Conditioning System with Heat.
Background technology
Multiple Air Conditioning System with Heat is a kind of multi-connected machine system that increases Waste Heat Recovery and ground-heating function in common multi-connected machine system.This system is mainly in common multi-connected machine system, to increase cross valve high temperature refrigerant is switched to hot water, and used heat is stored in to the object that water tank reaches recuperation of heat; This system is switched to floor heating generator by cold-producing medium in common multi-connected machine system, rejects heat to floor water system circulation, reaches the effect heating.It is more excellent, more energy-conservation than conventional fan coiled system that floor heating heats comfortableness.
In existing multiple Air Conditioning System with Heat, hot-water heating system is processed simultaneously and is separated use by same heat exchanger with the hot water that ground heating system is used, and hot water for life water quality cannot be guaranteed.The restriction water temperature that is compressed machine range of operation is usually less than 50 ℃ and cannot meets the requirements at the higher level of hot water for life to water temperature.In the situation that part indoor set does not move, wherein can not retain cold-producing medium, the refrigerant quality of carrying out operation cycle in system be reduced, and affect system works efficiency.Multiple Air Conditioning System with Heat of the prior art conventionally its actual operating efficiency can only reach 40% of its design power, even lower.
Utility model content
The technical problem that the utility model solves is: provide a kind of and can realize refrigeration, heat, the air-conditioning system of hot water, floor heating, and make it can reach the design power of air-conditioning system in the course of the work.
For reaching this object, the utility model by the following technical solutions:
A multiple Air Conditioning System with Heat, comprising: indoor set and off-premises station;
Described off-premises station comprises compressor bank, the outdoor heat exchanger being comprised of an above compressor;
Described indoor set comprises the domestic hot-water's heat exchanger being connected between described compressor and described outdoor heat exchanger; Be connected to the floor heating generator at pipeline two ends, described outdoor heat exchanger place, and the indoor heat exchanger group that is connected to an above indoor heat exchanger composition between described outdoor heat exchanger and described compressor, described floor heating generator two ends are provided with floor heating generator parallel branch, on described floor heating generator parallel branch, are provided with magnetic valve;
Described compressor bank has compressor first interface and compressor the second interface, and described compressor first interface place is provided with for controlling selective the first cross valve that is communicated with the parallel pipeline of described domestic hot-water's heat exchanger, outdoor heat exchanger or floor heating generator of described compressor;
Described outdoor heat exchanger has outdoor heat exchanger first interface and outdoor heat exchanger the second interface, and described outdoor heat exchanger first interface place is provided with the second cross valve that freezes or heat for control system;
Described indoor heat exchanger group has indoor heat exchanger first interface and indoor heat exchanger the second interface, and described indoor heat exchanger first interface place is provided with the 3rd cross valve heating for realizing system.
As further preferred version, described the first cross valve has valve port A, valve port B, valve port C and valve port D, wherein valve port B connects described compressor first interface, valve port C connects the refrigerant inlet of described domestic hot-water's heat exchanger, valve port A connects described floor heating generator, and connecting the branch road that described outdoor heat exchanger and capillary form, valve port D connects compressor the second interface.
As further preferred version, described the second cross valve has valve port E, valve port F, valve port G and valve port H, wherein valve port E selectively connects compressor first interface or domestic hot-water's heat exchanger, valve port F connects indoor heat exchanger first interface, valve port G junction chamber external heat exchanger first interface, valve port H connects compressor the second interface.
As further preferred version, described the 3rd cross valve has valve port T, valve port W, valve port N, valve port S, and wherein valve port T connects the second cross valve valve port F, valve port W shutoff, and valve port N connects indoor heat exchanger first interface, and valve port S connects compressor the second interface.
As further preferred version, between the valve port S of described outdoor heat exchanger the second interface and described the 3rd cross valve and described compressor the second interface, be provided with capillary.
As further preferred version, in described indoor heat exchanger group, every described indoor heat exchanger is all serially connected with interior machine expansion valve.
As further preferred version, described outdoor heat exchanger the second interface is provided with check valve, and described check valve can pass through while being set to only make cold-producing medium to be flowed out by outdoor heat exchanger the second interface, and described check valve two ends are parallel with electric expansion valve.
As further preferred version, described domestic hot-water's heat exchanger, floor heating generator and indoor heat exchanger group two ends are provided with stop valve.
As further preferred version, described compressor first interface place is provided with oil eliminator, and described compressor the second interface is provided with gas-liquid separator.
As further preferred version, between described compressor first interface and described oil eliminator, pressure sensor, pressure switch and service valve are set, between described compressor the second interface and described gas-liquid separator, be provided with pressure sensor and service valve.
The operation method of a kind of right multiple Air Conditioning System with Heat as above, the connection of each valve port by the first cross valve, the second cross valve and the 3rd cross valve and blocking-up optionally realize that indoor heat exchanger group refrigeration, indoor heat exchanger group heat, floor heating heats, domestic hot-water's heat exchanger provides any one operating mode in hot water, or indoor heat exchanger group refrigeration, indoor heat exchanger group heat, floor heating heat in any one and described domestic hot-water's heat exchanger the composite condition of hot water is provided.
As further preferred version, by domestic hot-water's device described in the first cross valve Selective Control, whether participate in work; Indoor heat exchanger group refrigeration by the second cross valve selective control, indoor heat exchanger group heats or floor heating heats.
As further preferred version, when in described the second cross valve control room, heat exchanger package heats, by described the 3rd cross valve, be communicated with described compressor first interface and described indoor heat exchanger group first interface, or, by described the 3rd cross valve, be communicated with refrigerant outlet and the indoor heat exchanger group first interface of described domestic hot-water's heat exchanger.
The beneficial effects of the utility model are: domestic hot-water's exchanging air and floor heating generator are set separately, can realize hot water for life and with hot water, separate processing with floor heating, guarantee the water quality of hot water for life, improve hot water temperature; Solve the problem that in the indoor set not moving, cold-producing medium retains, the cold-producing medium in system is fully utilized, improved the operating efficiency of system.
Accompanying drawing explanation
According to drawings and embodiments the utility model is described in further detail below.
Fig. 1 is multiple Air Conditioning System with Heat schematic diagram described in the utility model.
Fig. 2 is hot water pattern diagram.
Fig. 3 is refrigeration mode schematic diagram.
Fig. 4 is hot water, refrigeration mode schematic diagram.
Fig. 5 is floor heating pattern diagram.
Fig. 6 is hot water, floor heating pattern diagram.
Fig. 7 is heating mode schematic diagram.
Fig. 8 is hot water, heating mode schematic diagram.
In figure:
1, compressor; 2, indoor heat exchanger group; 3, outdoor heat exchanger; 4, indoor heat exchanger the second interface; 5, indoor heat exchanger first interface; 6, outdoor heat exchanger first interface; 7, outdoor heat exchanger the second interface; 8, compressor first interface; 9, compressor the second interface; 10, the first cross valve; 11, domestic hot-water's heat exchanger; 12, the second cross valve; 13, floor heating generator; 14, floor heating generator parallel branch; 15, magnetic valve; 16, hot water stop valve; 17, floor heating stop valve; 18, indoor set stop valve; 19, capillary; 20, gas-liquid separator; 21, oil eliminator; 22, the 3rd cross valve; 23, check valve.
The specific embodiment
Below in conjunction with accompanying drawing and by the specific embodiment, further illustrate the technical solution of the utility model.
As shown in Figure 1, in the present embodiment, a kind of multiple Air Conditioning System with Heat described in the utility model, comprise by the connected compressor 1 of refrigerant tubing, indoor heat exchanger group 2, outdoor heat exchanger 3, compressor 1 has compressor first interface 8 and compressor the second interface 9, indoor heat exchanger group 2 has indoor heat exchanger first interface 5 and indoor heat exchanger the second interface 4, outdoor heat exchanger 3 has outdoor heat exchanger first interface 6 and outdoor heat exchanger the second interface 7, wherein, in the position of compressor first interface 8, be provided with and there is valve port A, valve port B, valve port C, the first cross valve 10 of valve port D, compressor first interface 8 is connected with described valve port B, valve port C connects the refrigerant inlet that is arranged on indoor domestic hot-water's heat exchanger 11, valve port D connects compressor the second interface 9, valve port A is connected and is had valve port E by refrigerant pipe, valve port F, valve port G, the valve port E of the second cross valve 12 of valve port H.The valve port E of the second cross valve 12 also connects the refrigerant outlet of domestic hot-water's heat exchanger 11 simultaneously, and for carrying out the refrigerant inlet of the floor heating generator 13 of floor heating heat supply, the refrigerant outlet of floor heating generator 13 is connected with outdoor heat exchanger the second interface 7, at floor heating generator 13 two ends, in parallel with the floor heating generator 13 floor heating generator parallel branch 14 that is provided with, is provided with on floor heating generator parallel branch 14 for controlling the magnetic valve 15 of floor heating generator parallel branch 14 break-makes.Valve port G junction chamber external heat exchanger first interface 6, valve port H connects compressor 9 second interfaces, the indoor heat exchanger first interface 5 of heat exchanger package 2 in valve port F junction chamber.Between the valve port F of the second cross valve 12 and indoor heat exchanger group 2, be provided with and there is valve port T, valve port W, valve port N, the 3rd cross valve 22 of valve port S, wherein valve port T connects the valve port F of the second cross valve 12, valve port W shutoff, valve port N connects indoor heat exchanger first interface 5, valve port S connects compressor the second interface 9, between valve port S and compressor the second interface 9, be provided with capillary 19, when the 2 not participation system operation of indoor heat exchanger group, capillary 19 can be extracted the cold-producing medium being deposited in indoor heat exchanger group 2 out, and be transported in compressor 1, can participate in system works, thereby improve the operating efficiency of system.
The air-conditioning system in prior art with floor heating and hot water function, when not moving, indoor set has cold-producing medium in indoor set residual, in the situation that cold-producing medium reduces, the operating efficiency of air-conditioning only can reach 40% of design power, adopts the structure described in this programme can make air-conditioning system 100% reach design power requirement.
Indoor heat exchanger second interface 4 junction chamber external heat exchanger the second interfaces 7.
In the present embodiment, indoor heat exchanger group 2 has two indoor heat exchangers.
At domestic hot-water's heat exchanger 11 two ends, be provided with hot water stop valve 16, floor heating generator 13 two ends are provided with floor heating stop valve 17, and indoor heat exchanger group 2 two ends are provided with indoor set stop valve 18.
Between the first cross valve 10 and the 3rd cross valve 22 and compressor the second interface 9, be provided with capillary 19, compressor 1 two ends are provided with the pressure sensor for detection of the input/output pressure of cold-producing medium in compressor 1, and the service valve for overhauling, at compressor first interface, 8 places are also provided with high-voltage switch gear.
Between compressor first interface 8 and the first cross valve 10, be provided with oil eliminator 21, compressor the second interface 9 places are provided with gas-liquid separator 20.
Lower mask body is introduced each mode of operation of multiple Air Conditioning System with Heat,
Be illustrated in figure 2 hot water pattern diagram, under hot water pattern, compressor first interface 8 is as refrigerant outlet, now the valve port A of the first cross valve 10 is communicated with valve port D, valve port B is communicated with valve port C, and the hot water stop valve 16 at domestic hot-water's heat exchanger 11 two ends is opening, and cold-producing medium is flowed out and entered domestic hot-water's heat exchanger 11 by compressor first interface 8, in domestic hot-water's heat exchanger 11, carry out, after heat exchange, by its refrigerant outlet, being flowed out.
Now the valve port E of the second cross valve 12 is communicated with valve port F, and valve port G is communicated with valve port H; The floor heating stop valve 17 at floor heating generator 13 two ends is in closed condition, and the magnetic valve 15 on floor heating generator parallel branch 14 is in opening.On the connecting line of valve port F and indoor heat exchanger first interface 5, be provided with check valve 23, make cold-producing medium flow into indoor heat exchanger first interface 5 by valve port F, and make cold-producing medium flow to outdoor heat exchanger the second interface 7 by floor heating generator parallel branch 14, by outdoor heat exchanger the second interface 7, enter in outdoor heat exchanger 3 and by outdoor heat exchanger first interface 6 and flow back to compressor 1.
Be illustrated in figure 3 refrigeration mode schematic diagram, under refrigeration mode, the valve port B of the first cross valve 10 is communicated with valve port A, valve port C is communicated with valve port D, and the second cross valve 12 valve port E are communicated with valve port G, and valve port F is communicated with valve port H, magnetic valve 15 cuts out, floor heating stop valve 17 is closed, and cold-producing medium is flowed out and entered outdoor heat exchanger 3 and carry out condensation by compressor 1, then enters after indoor heat exchanger group 2 is freezed and flow back to compressor 1 by compressor the second interface 9.
Be illustrated in figure 4 hot water, refrigeration mode schematic diagram, it is with the difference of independent hot water pattern, under refrigeration hot water pattern, the valve port E of the second cross valve 12 is communicated with valve port G, valve port F is communicated with valve port H, magnetic valve 15 cuts out, floor heating stop valve 17 is closed, the cold-producing medium being flowed out by domestic hot-water's heat exchanger 11 refrigerant outlets is flowed in outdoor heat exchangers 3 and is carried out condensation by the second cross valve 12, after condensation, by indoor heat exchanger first interface 5, is entered after freezing in indoor heat exchanger group 2 and is flowed back to compressor 1 by compressor the second interface 9.
Be illustrated in figure 5 floor heating pattern diagram, under floor heating pattern, the valve port B of the first cross valve 10 is communicated with valve port A, valve port C is communicated with valve port D, the valve port E of the second cross valve 12 is communicated with valve port F, valve port G is communicated with valve port H, magnetic valve 15 on floor heating generator parallel branch 14 cuts out, the indoor set stop valve 18 at indoor heat exchanger group 2 two ends is closed, refrigerant inlet by floor heating generator 13 after cold-producing medium is flowed out by compressor first interface 8 enters floor heating generator 13, and flow out the laggard outdoor heat exchanger 3 that enters by the refrigerant outlet of floor heating generator 13, by flowing back to compressor 1 after outdoor heat exchanger 3.
Be illustrated in figure 6 hot water, floor heating pattern diagram, now the valve port A of the first cross valve 10 is communicated with valve port D, and valve port B is communicated with valve port C; The valve port E of the second cross valve 12 is communicated with valve port F, valve port G is communicated with valve port H, hot water stop valve 16 is opened with floor heating stop valve 17, indoor set stop valve 18 is closed, it is domestic hot-water's heat exchange that cold-producing medium is introduced in domestic hot-water's heat exchanger 11 after compressor 1 flows out, enter again floor heating institute calorific requirement is provided in floor heating generator 13, then flow back to compressor 1 via outdoor heat exchanger 3.
Traditional domestic hot-water and floor heating water are processed water temperature simultaneously and are reached as high as 50 ℃, and water temperature improves more than 20 ℃ when under this kind of structure, domestic hot-water's water temperature can more traditional hot water floor heating be processed simultaneously, reach 70 ℃ even higher, can meet the temperature requirement of domestic water completely.
Be illustrated in figure 7 heating mode schematic diagram, under heating mode, the valve port B of the first cross valve 10 is communicated with valve port A, valve port C is communicated with valve port D, the valve port E of the second cross valve 12 is communicated with valve port F, valve port G is communicated with valve port H, the valve port T of the 3rd cross valve 22 is communicated with valve port N, valve port S takes back compressor the second interface 9, floor heating stop valve 17 is closed, floor heating generator parallel branch 14 is closed, indoor set stop valve 18 is opened, after cold-producing medium is flowed out by compressor first interface 8 successively through the first cross valve 10, the second cross valve 12, the 3rd cross valve 22 is laggard to enter in indoor heat exchanger package 2 to carry out heat exchange, extraneous air is heated to the laggard outdoor heat exchanger 3 that enters, finally by compressor the second interface 9, flow back to compressor 1.
Be illustrated in figure 8 hot water, heating mode schematic diagram, now the valve port A of the first cross valve 10 is communicated with valve port D, valve port B is communicated with valve port C, the valve port E of the second cross valve 12 is communicated with valve port F, valve port G is communicated with valve port H, the valve port T of the 3rd cross valve 22 is communicated with valve port N, valve port S takes back compressor the second interface 9, hot water stop valve 16 is opened, floor heating stop valve 17 is closed, floor heating generator parallel branch 14 is closed, indoor set stop valve 18 is opened, first cold-producing medium enters 11 pairs of domestic waters of domestic hot-water's heat exchanger after being flowed out by compressor first interface 8 and heats, then by the second cross valve 12, the 3rd cross valve 22 enters indoor heat exchanger group 2, heat, after having heated, pass through indoor heat exchanger 3, by compressor the second interface 9, flow back to compressor 1.
What need statement is; the above-mentioned specific embodiment is only preferred embodiment of the present utility model and institute's application technology principle; in technical scope disclosed in the utility model; the variation that any those skilled in the art of being familiar with easily expect or replacement, all should be encompassed in protection domain of the present utility model.
Claims (10)
1. a multiple Air Conditioning System with Heat, is characterized in that, comprising: indoor set and off-premises station;
Described off-premises station comprises compressor bank, the outdoor heat exchanger being comprised of an above compressor;
Described indoor set comprises the domestic hot-water's heat exchanger being connected between described compressor and described outdoor heat exchanger; Be connected to the floor heating generator at pipeline two ends, described outdoor heat exchanger place, and the indoor heat exchanger group that is connected to an above indoor heat exchanger composition between described outdoor heat exchanger and described compressor, described floor heating generator two ends are provided with floor heating generator parallel branch, on described floor heating generator parallel branch, are provided with magnetic valve;
Described compressor bank has compressor first interface and compressor the second interface, and described compressor first interface place is provided with for controlling selective the first cross valve that is communicated with the parallel pipeline of described domestic hot-water's heat exchanger, outdoor heat exchanger or floor heating generator of described compressor;
Described outdoor heat exchanger has outdoor heat exchanger first interface and outdoor heat exchanger the second interface, and described outdoor heat exchanger first interface place is provided with the second cross valve that freezes or heat for control system;
Described indoor heat exchanger group has indoor heat exchanger first interface and indoor heat exchanger the second interface, and described indoor heat exchanger first interface place is provided with the 3rd cross valve heating for realizing system.
2. multiple Air Conditioning System with Heat according to claim 1, it is characterized in that, described the first cross valve has valve port A, valve port B, valve port C and valve port D, wherein valve port B connects described compressor first interface, valve port C connects the refrigerant inlet of described domestic hot-water's heat exchanger, valve port A connects described floor heating generator, and connects the branch road of described outdoor heat exchanger and capillary composition, and valve port D connects compressor the second interface.
3. multiple Air Conditioning System with Heat according to claim 2, it is characterized in that, described the second cross valve has valve port E, valve port F, valve port G and valve port H, wherein valve port E selectively connects compressor first interface or domestic hot-water's heat exchanger, valve port F connects indoor heat exchanger first interface, valve port G junction chamber external heat exchanger first interface, valve port H connects compressor the second interface.
4. multiple Air Conditioning System with Heat according to claim 3, it is characterized in that, described the 3rd cross valve has valve port T, valve port W, valve port N, valve port S, wherein valve port T connects the second cross valve valve port F, valve port W shutoff, valve port N connects indoor heat exchanger first interface, and valve port S connects compressor the second interface.
5. multiple Air Conditioning System with Heat according to claim 4, is characterized in that, between the valve port S of described outdoor heat exchanger the second interface and described the 3rd cross valve and described compressor the second interface, is provided with capillary.
6. multiple Air Conditioning System with Heat according to claim 1, is characterized in that, in described indoor heat exchanger group, every described indoor heat exchanger is all serially connected with interior machine expansion valve.
7. multiple Air Conditioning System with Heat according to claim 1, it is characterized in that, described outdoor heat exchanger the second interface is provided with check valve, described check valve can pass through while being set to only make cold-producing medium to be flowed out by outdoor heat exchanger the second interface, and described check valve two ends are parallel with electric expansion valve.
8. according to the multiple Air Conditioning System with Heat described in any one in claim 1 to 7, it is characterized in that, described domestic hot-water's heat exchanger, floor heating generator and indoor heat exchanger group two ends are provided with stop valve.
9. according to the multiple Air Conditioning System with Heat described in any one in claim 1 to 7, it is characterized in that, described compressor first interface place is provided with oil eliminator, and described compressor the second interface is provided with gas-liquid separator.
10. multiple Air Conditioning System with Heat according to claim 9, it is characterized in that, between described compressor first interface and described oil eliminator, pressure sensor, pressure switch and service valve are set, between described compressor the second interface and described gas-liquid separator, are provided with pressure sensor and service valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320574612.2U CN203518094U (en) | 2013-09-16 | 2013-09-16 | Multi-connected heat recovery air-conditioner system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320574612.2U CN203518094U (en) | 2013-09-16 | 2013-09-16 | Multi-connected heat recovery air-conditioner system |
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| CN203518094U true CN203518094U (en) | 2014-04-02 |
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| CN201320574612.2U Withdrawn - After Issue CN203518094U (en) | 2013-09-16 | 2013-09-16 | Multi-connected heat recovery air-conditioner system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471192A (en) * | 2013-09-16 | 2013-12-25 | 广东欧科空调制冷有限公司 | Multi-connected type heat recovery air conditioning system and running method thereof |
| CN104390385A (en) * | 2014-11-13 | 2015-03-04 | 江门市凯立信电气科技有限公司 | Heat pump system and control method thereof |
| CN104534713A (en) * | 2014-12-31 | 2015-04-22 | 华南理工大学 | Dual-compressor rapid cooling low temperature refrigeration system and method |
| CN104949195A (en) * | 2014-03-25 | 2015-09-30 | 珠海格力电器股份有限公司 | Multi-connected air conditioning unit |
| CN105020934A (en) * | 2014-04-17 | 2015-11-04 | 陈则韶 | Simplified practical multifunctional water-heating air-conditioner |
| JP2018063090A (en) * | 2016-10-14 | 2018-04-19 | 株式会社コロナ | Heat pump water heater with cooling/heating function |
| CN108775728A (en) * | 2018-07-20 | 2018-11-09 | 珠海格力电器股份有限公司 | Multi-split cold and hot water unit |
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2013
- 2013-09-16 CN CN201320574612.2U patent/CN203518094U/en not_active Withdrawn - After Issue
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471192A (en) * | 2013-09-16 | 2013-12-25 | 广东欧科空调制冷有限公司 | Multi-connected type heat recovery air conditioning system and running method thereof |
| CN103471192B (en) * | 2013-09-16 | 2016-04-06 | 广东欧科空调制冷有限公司 | Multiple Air Conditioning System with Heat and operation method thereof |
| CN104949195A (en) * | 2014-03-25 | 2015-09-30 | 珠海格力电器股份有限公司 | Multi-connected air conditioning unit |
| CN104949195B (en) * | 2014-03-25 | 2017-11-14 | 珠海格力电器股份有限公司 | Multi-connected air conditioning unit |
| CN105020934A (en) * | 2014-04-17 | 2015-11-04 | 陈则韶 | Simplified practical multifunctional water-heating air-conditioner |
| CN104390385A (en) * | 2014-11-13 | 2015-03-04 | 江门市凯立信电气科技有限公司 | Heat pump system and control method thereof |
| CN104534713A (en) * | 2014-12-31 | 2015-04-22 | 华南理工大学 | Dual-compressor rapid cooling low temperature refrigeration system and method |
| JP2018063090A (en) * | 2016-10-14 | 2018-04-19 | 株式会社コロナ | Heat pump water heater with cooling/heating function |
| CN108775728A (en) * | 2018-07-20 | 2018-11-09 | 珠海格力电器股份有限公司 | Multi-split cold and hot water unit |
| WO2020015296A1 (en) * | 2018-07-20 | 2020-01-23 | 珠海格力电器股份有限公司 | Multi-split cold and hot water unit |
| CN108775728B (en) * | 2018-07-20 | 2023-08-04 | 珠海格力电器股份有限公司 | Multi-split water chiller-heater unit |
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