CN109990499A - A kind of non-stop-machine combustion-gas thermal pump air-conditioning system of defrosting - Google Patents
A kind of non-stop-machine combustion-gas thermal pump air-conditioning system of defrosting Download PDFInfo
- Publication number
- CN109990499A CN109990499A CN201910161098.1A CN201910161098A CN109990499A CN 109990499 A CN109990499 A CN 109990499A CN 201910161098 A CN201910161098 A CN 201910161098A CN 109990499 A CN109990499 A CN 109990499A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- gas
- outdoor unit
- cooling water
- defrosting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
Abstract
The present invention relates to a kind of non-stop-machine combustion-gas thermal pump air-conditioning system of defrosting, the refrigerant circulation loop constituted including sequentially being connected by compressor, oil eliminator, four-way valve, indoor set heat exchanger, outdoor unit heat exchanger and gas-liquid separator.The compressor is connected by belt with gas engine；The outside of the gas engine is equipped with cooling water tank；The cooling water tank constitutes cooling water circulation loop by water pump and radiator；It further include secondary evaporator, a refrigerant port of the pair evaporator connects the four-way valve and gas-liquid separator simultaneously, another refrigerant port is connected on the pipeline between the indoor set heat exchanger second end and outdoor unit heat exchanger first end；The both ends in the water route of the pair evaporator are connected with the both ends of the radiator respectively；The outdoor unit heat exchanger first end is connected with the outlet of the oil eliminator.The present invention can use some refrigerant and carry out defrosting work, avoid must shut down defrosting in the past and to the adverse effect of user's bring.
Description
Technical field
The present invention relates to a kind of air-conditioning system, especially a kind of air-conditioning system that can be defrosted under the premise of non-stop-machine
System, specifically a kind of non-stop-machine combustion-gas thermal pump air-conditioning system of defrosting.
Background technique
When air-conditioning system heating operation in winter, since outdoor environment temperature is low, outdoor heat exchanger (evaporator) surface
Often be lower than 0 DEG C hereinafter, so surface can gradually frosting, with the thickening of frosting, the heating capacity of unit can be gradually decreased,
Indoor leaving air temp is gradually lowered, at this time with regard to defrosting.Currently, traditional Defrost method is all using switching four
Lead to reversal valve and defrosted by inverse circulation, that is, Defrost operation is equivalent to refrigerating operaton, and indoor unit carries out at anti-cold wind at this time
Reason stops heat supply, meanwhile, indoor set heat exchanger is as evaporator to indoor cold scattering, and still, this method will will lead to room
Temperature decline, influences comfort.
Summary of the invention
In view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of non-stop-machine gas heat pump air-conditioning systems of defrosting
System, not only can be to avoid influence when defrosting to room temperature, moreover, also as a source of power using combustion gas, avoiding city
City's electric power is insufficient and bring adversely affects, it is ensured that user uses comfortable and convenient.
The technical scheme is that
A kind of non-stop-machine combustion-gas thermal pump air-conditioning system of defrosting, including exchanged heat by compressor, oil eliminator, four-way valve, indoor unit
Device, outdoor unit heat exchanger and gas-liquid separator sequentially connect and the refrigerant circulation loop that constitutes.
The compressor is connected by belt with gas engine；The outside of the gas engine is equipped with cooling water tank；It should
Cooling water tank constitutes cooling water circulation loop by water pump and radiator；
It further include secondary evaporator, a refrigerant port of the pair evaporator connects the four-way valve and gas-liquid separator simultaneously,
Another refrigerant port is connected on the pipeline between the indoor set heat exchanger second end and outdoor unit heat exchanger first end；
The both ends in the water route of the pair evaporator are connected with the both ends of the radiator respectively；The outdoor unit heat exchanger first end with it is described
The outlet of oil eliminator is connected.
It further, further include thermostat, import A is connected with one end of the cooling water tank, and outlet B is dissipated with described
One end of hot device is connected, and outlet C is connected with the water route port of the secondary evaporator.
It further, further include the first electric expansion valve and the second electric expansion valve；First electric expansion valve is set to
On pipeline between the indoor set heat exchanger second end and the outdoor unit heat exchanger first end；Second electric expansion valve
On pipeline between the secondary evaporator and the indoor set heat exchanger second end.
It further, further include the first solenoid valve, second solenoid valve and third solenoid valve, first solenoid valve is set to institute
It states on the pipeline between indoor set heat exchanger second end and the outdoor unit heat exchanger second end；The second solenoid valve is set to institute
It states on the pipeline between outdoor unit heat exchanger second end and the four-way valve；The third solenoid valve exchanges heat set on the outdoor unit
On pipeline between device first end and oil eliminator outlet.
Further, the radiator and the outdoor unit heat exchanger are arranged side by side, and in close proximity to.
Beneficial effects of the present invention:
The present invention has rational design, compact structure and easy to use, can use some refrigerant and carries out defrosting work, avoid with
Toward defrosting must be shut down to the adverse effect of user's bring, the comfort used is improved.Meanwhile it can also make full use of combustion gas
Heat caused by engine, exchanges heat with outdoor unit heat exchanger, improves the operational efficiency of air-conditioning system, sufficiently meets heating
Needs.
Detailed description of the invention
Fig. 1 is system diagram of the invention.
Wherein: 1- compressor, 2- oil eliminator, 3- four-way valve, 4- indoor set heat exchanger, 5- electronic expansion valve of indoor unit,
The first electric expansion valve of 6-, 7- outdoor unit heat exchanger, 8- gas-liquid separator, 9- gas engine, 10- cooling water tank, 11- dissipate
Hot device, 12- water pump, 13- thermostat, 14- pair evaporator, the second electric expansion valve of 15-, the first solenoid valve of 16-, 17- third electricity
Magnet valve, 18- second solenoid valve, 19- belt.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
As shown in Figure 1.
A kind of non-stop-machine combustion-gas thermal pump air-conditioning system of defrosting, including by compressor 1, oil eliminator 2, four-way valve 3, interior
Machine heat exchanger 4, outdoor unit heat exchanger 7 and gas-liquid separator 8 sequentially connect and the refrigerant circulation loop that constitutes, specifically: pressure
The exhaust outlet of contracting machine 1 is successively connected to the first end of indoor set heat exchanger 4 after oil eliminator 2 and four-way valve 3, then, from
The second end of the indoor set heat exchanger 4 is connected to the first end of outdoor unit heat exchanger 7, then from the second of the outdoor unit heat exchanger 7
End is connected to the entrance of gas-liquid separator 8 after the four-way valve 3, finally, being connected to from the outlet of the gas-liquid separator 8 described
The air entry of compressor 1 forms complete refrigerant circulation loop.Wherein, the indoor set heat exchanger 4 can for it is multiple simultaneously
Connection, and an electronic expansion valve of indoor unit 5 is equipped on each indoor set heat exchanger 4, convenient for flexibly control.The outdoor unit changes
Hot 7 first end of device is connected with the outlet of the oil eliminator 2.
The compressor 1 is belt driven type, is connected by belt 19 with gas engine 9；Outside the gas engine 9
Portion is equipped with cooling water tank 10, effectively to be cooled down in time to the gas engine 9.The cooling water tank 10 also passes through water pump
12 constitute cooling water circulation loop with radiator 11, enter the cooling water after being heated in the radiator 11 through water pump 12 and carry out
Cooling, is reused, energy conservation and environmental protection after then flowing back to the cooling water tank 10 again.
The invention also includes secondary evaporator 14, a refrigerant port of the pair evaporator 14 connects the four-way valve simultaneously
3 and gas-liquid separator 8 import, another refrigerant port is connected to 4 second end of indoor set heat exchanger and changes with outdoor unit
On pipeline between hot 7 first end of device；The both ends in the water route of the pair evaporator 14 are connected with the both ends of the radiator 11 respectively,
Cooling water can be made full use of to exchange heat, improve service efficiency.
The invention also includes thermostat 13, import A is connected with one end of the cooling water tank 10, outlet B with it is described
One end of radiator 11 is connected, and outlet C is connected with the water route port of the secondary evaporator 14, can be according to coolant water temperature
The flow of the degree automatic adjustment outlet B and the outlet C, that is, when coolant water temperature≤70 DEG C, the aperture of the outlet B is most
Small, the aperture of the outlet C is maximum；When 70 DEG C of cooling water temperature >, the outlet B is gradually opened greatly, the aperture of the outlet C
It is gradually reduced；When 85 DEG C of coolant water temperature >, the outlet B is opened to maximum, and the aperture of the outlet C is minimum.Pass through the constant temperature
The adjusting of device 13 can make cooling water obtain sufficiently effective use, and guarantee the normal operation of system.
The invention also includes the first electric expansion valves 6 and the second electric expansion valve 15, to control the refrigeration in each pipeline
Agent state；First electric expansion valve 6 is set to 4 second end of indoor set heat exchanger and the outdoor unit heat exchanger 7 first
On pipeline between end；Second electric expansion valve 15 is set to the secondary evaporator 14 and the indoor set heat exchanger 4 second
On pipeline between end.
It further include the first solenoid valve 16, second solenoid valve 18 and third solenoid valve 17, first solenoid valve in the present invention
16 are set on the pipeline between 7 second end of 4 second end of indoor set heat exchanger and the outdoor unit heat exchanger；Second electricity
Magnet valve 18 is set on the pipeline between 4 second end of outdoor unit heat exchanger and the four-way valve 3；The third solenoid valve 17 is set
On pipeline between 7 first end of outdoor unit heat exchanger and the outlet of the oil eliminator 2.To can easily control each
The on-off of Duan Guanlu.
Further, the radiator 11 is arranged side by side with the outdoor unit heat exchanger 7, and in close proximity to usually 0-
5mm can make adequately to be exchanged heat between the two, improve the utilization rate of cooling water.
3GPH88 can be selected in the gas engine.The compressor can select GHP5212MY2.
Operational process of the invention are as follows:
When system heating operation, the second solenoid valve and first electric expansion valve are in the open state, meanwhile, it is described
Solenoid valve described in first solenoid valve, third and second electric expansion valve are in close state.At this point, refrigerant is by the pressure
Contracting machine is compressed into the gaseous refrigerant of high temperature and pressure, and the interior is successively entered after the oil eliminator and the four-way valve
The liquid refrigerant of high temperature and pressure is condensed into machine heat exchanger, using electric by described first after the electronic expansion valve of indoor unit
The throttling of sub- expansion valve at low-temp low-pressure gas-liquid two-phase state refrigerant, and in the outdoor unit heat exchanger simultaneously with the heat dissipation
Device and air exchange heat, and flash to the gaseous refrigerant of low-temp low-pressure, then, flow into the gas-liquid separator, and separate
At gaseous state and liquid refrigerant, finally, gaseous refrigerant re-starts circulation after returning to the compressor.
When system Defrost operation, the second solenoid valve and first electric expansion valve are in close state, meanwhile,
First solenoid valve, the third solenoid valve and second electric expansion valve are in opening state.At this point, refrigerant by
The compressor compresses are at the gaseous refrigerant of high temperature and pressure, and after the oil eliminator, part of refrigerant passes through described
Four-way valve enters the indoor set heat exchanger, is condensed into the liquid refrigerant I of high temperature and pressure；Another part refrigerant passes through described
Enter the outdoor unit heat exchanger after third solenoid valve, the liquid refrigerant II of high temperature and pressure is condensed into, using described first
It after solenoid valve, is mixed with the liquid refrigerant I, using second electric expansion valve throttling at the gas-liquid of low-temp low-pressure
Two phase refrigerants, and exchange heat in the secondary evaporator with the high-temperature cooling water from cooling water tank, flash to low temperature
Then the gaseous refrigerant of low pressure, then flows into the gas-liquid separator separates at gaseous state and liquid refrigerant, finally, gaseous state system
Cryogen returns to the compressor, restarts to recycle.
For the present invention in Defrost operation, refrigerant can not only enter the room mechanism heat, but also can enter outdoor unit and defrost, nothing
Four-way valve conversion refrigeration mode need to be switched to defrost, defrosting bring adverse effect must be shut down in the past by avoiding, greatly
The impression for improving user, meanwhile, also improve the operational efficiency of system.
Part that the present invention does not relate to is the same as those in the prior art or can be realized by using the prior art.
Claims (5)
1. a kind of non-stop-machine combustion-gas thermal pump air-conditioning system of defrosting, including changed by compressor, oil eliminator, four-way valve, indoor unit
Hot device, outdoor unit heat exchanger and gas-liquid separator sequentially connect and the refrigerant circulation loop that constitutes,
It is characterized in that the compressor is connected by belt with gas engine；The outside of the gas engine is equipped with cooling water
Case；The cooling water tank constitutes cooling water circulation loop by water pump and radiator；
It further include secondary evaporator, a refrigerant port of the pair evaporator connects the four-way valve and gas-liquid separator simultaneously,
Another refrigerant port is connected on the pipeline between the indoor set heat exchanger second end and outdoor unit heat exchanger first end；
The both ends in the water route of the pair evaporator are connected with the both ends of the radiator respectively；The outdoor unit heat exchanger first end with it is described
The outlet of oil eliminator is connected.
2. the non-stop-machine combustion-gas thermal pump air-conditioning system of defrosting according to claim 1, it is characterized in that further include thermostat,
Import A is connected with one end of the cooling water tank, and outlet B is connected with one end of the radiator, outlet C and the secondary steaming
The water route port for sending out device is connected.
3. the non-stop-machine combustion-gas thermal pump air-conditioning system of defrosting according to claim 1, it is characterized in that further including the first electronics
Expansion valve and the second electric expansion valve；First electric expansion valve is set to the indoor set heat exchanger second end and the outdoor
On pipeline between machine heat exchanger first end；Second electric expansion valve is set to the secondary evaporator and the indoor unit exchanges heat
On pipeline between device second end.
4. the non-stop-machine combustion-gas thermal pump air-conditioning system of defrosting according to claim 1, it is characterized in that further including the first electromagnetism
Valve, second solenoid valve and third solenoid valve, first solenoid valve are set to the indoor set heat exchanger second end and the outdoor
On pipeline between machine heat exchanger second end；The second solenoid valve is set to the outdoor unit heat exchanger second end and the four-way
On pipeline between valve；The third solenoid valve is set between the outdoor unit heat exchanger first end and oil eliminator outlet
Pipeline on.
5. the non-stop-machine combustion-gas thermal pump air-conditioning system of defrosting according to claim 1, it is characterized in that the radiator and institute
Outdoor unit heat exchanger is stated to be arranged side by side, and in close proximity to.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910161098.1A CN109990499B (en) | 2019-03-04 | 2019-03-04 | Gas heat pump air conditioning system without shutdown during defrosting |
| PCT/CN2019/100244 WO2020177275A1 (en) | 2019-03-04 | 2019-08-12 | Gas heat pump air-conditioning system having non-stop defrosting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910161098.1A CN109990499B (en) | 2019-03-04 | 2019-03-04 | Gas heat pump air conditioning system without shutdown during defrosting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109990499A true CN109990499A (en) | 2019-07-09 |
| CN109990499B CN109990499B (en) | 2021-02-19 |
Family
ID=67129576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910161098.1A Active CN109990499B (en) | 2019-03-04 | 2019-03-04 | Gas heat pump air conditioning system without shutdown during defrosting |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109990499B (en) |
| WO (1) | WO2020177275A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110793096A (en) * | 2019-11-29 | 2020-02-14 | 宁波奥克斯电气股份有限公司 | Air conditioning unit and control method and control device thereof |
| WO2020177275A1 (en) * | 2019-03-04 | 2020-09-10 | 南京天加环境科技有限公司 | Gas heat pump air-conditioning system having non-stop defrosting |
| CN112815569A (en) * | 2021-01-14 | 2021-05-18 | 中科广能能源研究院(重庆)有限公司 | Gas heat pump cold and hot water unit air conditioning system and control method thereof |
| CN114543387A (en) * | 2022-02-25 | 2022-05-27 | 南京天加环境科技有限公司 | Gas heat pump system capable of improving defrosting efficiency and control method thereof |
| CN114719458A (en) * | 2022-04-08 | 2022-07-08 | 哈尔滨工业大学 | Quasi-second-stage compression gas heat pump unit suitable for air supplement adjustable type in severe cold area |
| CN115307338A (en) * | 2022-08-12 | 2022-11-08 | 南京天加环境科技有限公司 | Gas heat pump heat recovery device and control method |
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- 2019-03-04 CN CN201910161098.1A patent/CN109990499B/en active Active
- 2019-08-12 WO PCT/CN2019/100244 patent/WO2020177275A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020177275A1 (en) * | 2019-03-04 | 2020-09-10 | 南京天加环境科技有限公司 | Gas heat pump air-conditioning system having non-stop defrosting |
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| CN112815569A (en) * | 2021-01-14 | 2021-05-18 | 中科广能能源研究院(重庆)有限公司 | Gas heat pump cold and hot water unit air conditioning system and control method thereof |
| CN112815569B (en) * | 2021-01-14 | 2022-04-26 | 中科广能能源研究院(重庆)有限公司 | Gas heat pump cold and hot water unit air conditioning system and control method thereof |
| CN114543387A (en) * | 2022-02-25 | 2022-05-27 | 南京天加环境科技有限公司 | Gas heat pump system capable of improving defrosting efficiency and control method thereof |
| CN114719458A (en) * | 2022-04-08 | 2022-07-08 | 哈尔滨工业大学 | Quasi-second-stage compression gas heat pump unit suitable for air supplement adjustable type in severe cold area |
| CN115307338A (en) * | 2022-08-12 | 2022-11-08 | 南京天加环境科技有限公司 | Gas heat pump heat recovery device and control method |
| CN115307338B (en) * | 2022-08-12 | 2023-12-01 | 南京天加环境科技有限公司 | Heat recovery device of gas heat pump and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020177275A1 (en) | 2020-09-10 |
| CN109990499B (en) | 2021-02-19 |
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