CN204555425U - A kind of ultra-low-loop temperature air source heat pump with backheat - Google Patents
A kind of ultra-low-loop temperature air source heat pump with backheat Download PDFInfo
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- CN204555425U CN204555425U CN201520043618.6U CN201520043618U CN204555425U CN 204555425 U CN204555425 U CN 204555425U CN 201520043618 U CN201520043618 U CN 201520043618U CN 204555425 U CN204555425 U CN 204555425U
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Abstract
With a ultra-low-loop temperature air source heat pump for backheat, comprise compressor, condenser, evaporimeter, four-way change-over valve, oil eliminator, reservoir, gas-liquid separator, oil return switch, regenerator, first, second heats refrigeration break-in passage; Compressor is connected with oil eliminator, and the outlet of oil eliminator Working medium gas is connected by four-way change-over valve one end with condenser or evaporimeter, and oil eliminator lubricating oil outlet is connected with compressor by oil return switch; Four-way change-over valve is connected with gas-liquid separator simultaneously; First two ends heating refrigeration break-in passage are connected with the other end of condenser and one end of reservoir respectively, one end that the other end of reservoir heats refrigeration break-in passage by regenerator and second is connected, and second other end heating refrigeration break-in passage is connected with the other end of evaporimeter; The outlet of gas-liquid separator is connected with the Working medium gas import of compressor by regenerator.The utility model effectively can improve the efficiency of air source heat pump, and structure is simple, safe and reliable.
Description
Technical field
The utility model belongs to art of heat pumps, particularly relates to a kind of ultra-low temperature air source heat pump that can work under ultra-low temperature surroundings.
Background technology
Air source heat pump is using air as high temperature [low temperature] thermal source to carry out the device of heat supply [cooling], have flexible for installation, easy to use, invest relatively low advantage.Air source heat pump internal structure mainly comprises the core components such as compressor, condenser, oil eliminator, evaporimeter.Air source heat pump heat supply workflow is generally such: compressor, by after the compression of the low pressure refrigerant working medium of backflow, becomes after high temperature and high pressure gas [mixture for high pressure gaseous working medium and lubricating oil] is discharged to oil eliminator and is separated into high pressure gaseous working medium and lubricating oil.High pressure gaseous working medium is discharged to condenser from oil eliminator, carries out heat exchange with the low-temperature water heating from user side, and heat cools down after being siphoned away by water liquefy working medium, then enters evaporimeter.And the coolant-temperature gage after heat absorption is raised, for user after eductor condenser.When liquid refrigerant enters before evaporimeter, become gas-liquid two-phase mixture by corresponding mechanism, the pressure of working medium reduces suddenly.When entering in evaporimeter, under the effect of fan, a large amount of air flows through the outer surface of evaporimeter, heat exchange is carried out with gas-liquid two-phase mixed working fluid, after gas-liquid two-phase mixed working fluid absorbs the heat in air, rapid evaporation becomes overheated gas and discharges evaporimeter, and then is compressed by compressor suction.In recent years, in air source heat pump field, ultra-low temperature air source heat pump obtains promotion and application widely, but the problem that the efficiency that all there is unit is lower.
Summary of the invention
Main inventive object of the present utility model is to provide a kind of air source heat pump that effectively can improve ultra-low temperature air source heat pump efficiency.
The utility model technical scheme used is: a kind of ultra-low-loop temperature air source heat pump with backheat, comprise compressor, condenser, evaporimeter, four-way change-over valve, oil eliminator, reservoir, gas-liquid separator, oil return switch, regenerator, first heats refrigeration break-in passage, second heats refrigeration break-in passage; The gases at high pressure outlet of compressor is connected with the import of oil eliminator, the Working medium gas outlet of oil eliminator is connected with one end [when heating] of condenser or one end [during refrigeration] of evaporimeter by four-way change-over valve, and the lubricating oil outlet of oil eliminator is connected with compressor by oil return switch; Four-way change-over valve is also connected with the import of gas-liquid separator simultaneously; First heats refrigeration break-in passage is made up of the first way valve passageway and the passage parallel connection of first throttle mechanism, and the first way valve passageway is provided with the first check valve, and first throttle mechanism passage is provided with first throttle mechanism; Second heats refrigeration break-in passage is made up of the second way valve passageway and the parallel connection of second throttle body passage, and the second way valve passageway is provided with the second check valve, and second throttle body passage is provided with second throttle body; First two ends heating refrigeration break-in passage are connected with the other end of condenser and one end of reservoir respectively, one end that the other end of reservoir heats refrigeration break-in passage by regenerator and second is connected, and second other end heating refrigeration break-in passage is connected with the other end of evaporimeter; The outlet of gas-liquid separator is connected with the Working medium gas import of compressor by regenerator.
When heating, the high temperature and high pressure gas [mixture for high pressure gaseous working medium and lubricating oil] that compressor is discharged enters in oil eliminator, after oil is separated, lubricating oil enters in compressor after discharging bottom oil eliminator and carries out lubrication, and gaseous working medium is entered in condenser by four-way change-over valve and carries out heat exchange with using the side water of coming, the liquid refrigerant of gaseous working medium exothermic condensation Cheng Zhongwen high pressure, water is then heated rear for user.Middle temperature high-pressure liquid working medium enters liquid storing barrel after heating the first way valve passageway of refrigeration commutation passage by first, then enters evaporimeter by the second throttle body passage that regenerator, second heats refrigeration.Middle temperature high-pressure liquid working medium is become the gas-liquid mixed working medium of low-temp low-pressure in second throttle body passage by throttling, be gasificated into gaseous working medium then absorb the low enthalpy heat in atmospheric environment in evaporimeter after.Middle temperature high-pressure liquid working medium by during regenerator with out enter gas-liquid separator by four-way change-over valve afterwards from evaporimeter after out enter regenerator from gas-liquid separator again gaseous working medium carry out heat exchange, enter the second throttle body passage that second heats refrigeration commutation passage after making the temperature of the middle temperature high-pressure liquid working medium flowing through regenerator continue reduction so again, then enter evaporimeter.The gaseous working medium import entering compressor enter the gaseous working medium heat absorption of regenerator from gas-liquid separator after is compressed, and then becomes high temperature and high pressure gas and discharges from compressor.So circulate again and again.
And when freezing/defrosting, the high temperature and high pressure gas that compressor is discharged enters in oil eliminator, after oil is separated, lubricating oil enters in compressor after discharging bottom oil eliminator and carries out lubrication, and the gaseous working medium of HTHP to be entered in evaporimeter to heat release in atmospheric environment [during defrosting operating condition by four-way change-over valve, the frost of evaporator surface is heated rear thawing], the gaseous working medium of HTHP is condensed into middle temperature high-pressure liquid working medium.Middle temperature high-pressure liquid working medium enters in reservoir after second heats refrigeration commutation the second way valve passageway of passage, regenerator, the first throttle mechanism passage that first heats refrigeration commutation passage is out entered again in reservoir, and then enter in condenser, and then out enter gas-liquid separator by four-way change-over valve from condenser, enter compressor finally by regenerator.Middle temperature high-pressure liquid working medium is in regenerator and carry out heat exchange from the cryogenic gaseous working medium that gas-liquid separator out enters regenerator and continue to reduce temperature, and then become low-temp low-pressure gas-liquid mixed working medium at first throttle mechanism port stream, low-temp low-pressure gas-liquid mixed working medium absorbs the heat from the water using side and enters gas-liquid separator by four-way change-over valve after being gasificated into low temperature gas-liquid mixed working medium in condenser, and then carry out compression from the gaseous working medium import entering compressor again after gas-liquid separator out enters regenerator and carries out heat exchange heat absorption by high-pressure liquid working medium warm regenerator and form high temperature and high pressure gas and be discharged to oil eliminator from compressor, be lowered rear for user from temperature after the water heat release of use side.So circulate again and again.
The utility model, effectively can improve the efficiency of ultra-low temperature air source heat pump by set regenerator, have the advantage that structure is simple, processing and manufacturing cost is low.
As preferably, the gases at high pressure of compressor export the path be connected with the import of oil eliminator and are provided with check valve.This preferred version, is conducive to the functional reliability with the ultra-low-loop temperature air source heat pump improving described band backheat.
As preferably, first throttle mechanism passage, second throttle body passage are equipped with filter; Filter is provided with between the lubricating oil outlet of oil eliminator and oil return switch.This preferred version, is conducive to the circulation ensureing corresponding pipeline, thus is conducive to the functional reliability of the ultra-low-loop temperature air source heat pump improving described band backheat.
As preferably, be provided with between reservoir and regenerator and show liquid mirror.This preferred version, is convenient to observe the working medium state in corresponding pipeline.
As preferably, between the gases at high pressure outlet of compressor and the import of oil eliminator and between the Working medium gas import of regenerator and compressor, be equipped with one section of flexible pipe.This preferred version, can effectively prevent vibration of compressor to the adverse effect of peripheral devices, is conducive to the functional reliability of the ultra-low-loop temperature air source heat pump improving described band backheat.
As preferably, reservoir is provided with safety valve structure.This preferred version, is conducive to the job security of the ultra-low-loop temperature air source heat pump improving described band backheat.
As preferably, compressor is provided with water cooling cylinder cover, the water inlet of water cooling cylinder cover is communicated with the water inlet pipe of condenser, and the delivery port of water cooling cylinder cover is communicated with the outlet pipe of condenser, and the connecting pipeline of the delivery port of water cooling cylinder cover and the outlet pipe of condenser is provided with magnetic valve.This preferred version, when compressor temperature rise ratio is higher, magnetic valve is opened, and water cooling cylinder cover water flowing cools compressor, is conducive to functional reliability and the efficiency of the ultra-low-loop temperature air source heat pump improving described band backheat.
In sum, the beneficial effect that the utility model brings is: the efficiency that effectively can improve air source heat pump, has that structure is simple, functional reliability and a high advantage of security.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
Detailed description of the invention
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
As shown in Figure 1, the utility model comprises compressor 1, condenser 2, evaporimeter 3, four-way change-over valve 4, oil eliminator 5, reservoir 6, gas-liquid separator 7, oil return switch, regenerator 8, the first heat refrigeration break-in passage 9, second and heat refrigeration break-in path 10; The gases at high pressure outlet of compressor is connected with the import of oil eliminator, the Working medium gas outlet of oil eliminator is connected with one end [when heating] of condenser or one end [during refrigeration] of evaporimeter by four-way change-over valve, and the lubricating oil outlet of oil eliminator is connected with compressor 1 by oil return switch; Four-way change-over valve is also connected with the import of gas-liquid separator simultaneously; First heats refrigeration break-in passage 9 is made up of the first way valve passageway 9.1 and passage 9.2 parallel connection of first throttle mechanism, and the first way valve passageway 9.1 is provided with the first check valve 9.1.1, and first throttle mechanism passage 9.2 is provided with first throttle mechanism 9.2.1; Second heats refrigeration break-in path 10 is made up of the second way valve passageway 10.1 and second throttle body path 10 .2 parallel connection, second way valve passageway 10.1 is provided with the second check valve 10.1.1, and second throttle body path 10 .2 is provided with second throttle body 10.2.1; First two ends heating refrigeration break-in passage 9 are connected with the other end of condenser 2 and one end of reservoir 6 respectively, one end that the other end of reservoir 6 heats refrigeration break-in path 10 by regenerator 8 and second is connected, and second other end heating refrigeration break-in path 10 is connected with the other end of evaporimeter 3; The outlet of gas-liquid separator 7 is connected with the Working medium gas import of compressor 1 by regenerator 8.
As preferably, the gases at high pressure of compressor export the path be connected with the import of oil eliminator and are provided with check valve 11, first throttle mechanism passage 9.2 and second throttle body path 10 .2 are equipped with filter 12, be provided with filter 13 between the lubricating oil outlet of oil eliminator and oil return switch, be provided with between reservoir 6 and regenerator 8 and show liquid mirror 14.
As preferably, be equipped with one section of flexible pipe 15 between the gases at high pressure outlet of compressor with the import of oil eliminator and between the Working medium gas import of regenerator 8 and compressor 1, reservoir 6 is provided with safety valve structure 16.
As preferably, compressor 1 is provided with water cooling cylinder cover [not shown], the water inlet of water cooling cylinder cover is communicated with the water inlet pipe of condenser 2, and the delivery port of water cooling cylinder cover is communicated with the outlet pipe of condenser 2, and the connecting pipeline of the delivery port of water cooling cylinder cover and the outlet pipe of condenser 2 is provided with magnetic valve 17.
The specific embodiment of the above is only the utility model preferably embodiment, not limits concrete practical range of the present utility model with this.The equivalence change that all shapes according to the utility model, structure are done ought to all be included in protection domain of the present utility model.
Claims (8)
1. the ultra-low-loop temperature air source heat pump with backheat, comprises compressor (1), condenser (2), evaporimeter (3), four-way change-over valve (4), oil eliminator (5), reservoir (6), gas-liquid separator (7) and oil return switch; The gases at high pressure outlet of compressor is connected with the import of oil eliminator, the Working medium gas outlet of oil eliminator is connected with one end of condenser or one end of evaporimeter by four-way change-over valve, and the lubricating oil outlet of oil eliminator is connected with compressor (1) by oil return switch; Four-way change-over valve is also connected with the import of gas-liquid separator simultaneously; It is characterized in that: also include regenerator (8), first heats refrigeration break-in passage (9), second heats refrigeration break-in passage (10); First heats refrigeration break-in passage (9) is made up of the first way valve passageway (9.1) and first throttle mechanism passage (9.2) parallel connection, first way valve passageway (9.1) is provided with the first check valve (9.1.1), and first throttle mechanism passage (9.2) is provided with first throttle mechanism (9.2.1); Second heats refrigeration break-in passage (10) is made up of the second way valve passageway (10.1) and second throttle body passage (10.2) parallel connection, second way valve passageway (10.1) is provided with the second check valve (10.1.1), and second throttle body passage (10.2) is provided with second throttle body (10.2.1); First two ends heating refrigeration break-in passage (9) are connected with the other end of condenser (2) and one end of reservoir (6) respectively, one end that the other end of reservoir (6) heats refrigeration break-in passage (10) by regenerator (8) and second is connected, and second other end heating refrigeration break-in passage (10) is connected with the other end of evaporimeter (3); The outlet of gas-liquid separator (7) is connected by the Working medium gas import of regenerator (8) with compressor (1).
2. a kind of ultra-low-loop temperature air source heat pump with backheat according to claim 1, is characterized in that: the gases at high pressure of compressor export the path be connected with the import of oil eliminator and are provided with check valve (11).
3. a kind of ultra-low-loop temperature air source heat pump with backheat according to claim 1, is characterized in that: first throttle mechanism passage (9.2) and second throttle body passage (10.2) are equipped with filter (12).
4. a kind of ultra-low-loop temperature air source heat pump with backheat according to claim 1, is characterized in that: be provided with filter (13) between the lubricating oil outlet of oil eliminator and oil return switch.
5. a kind of ultra-low-loop temperature air source heat pump with backheat according to claim 1, is characterized in that: be provided with between reservoir (6) and regenerator (8) and show liquid mirror (14).
6. a kind of ultra-low-loop temperature air source heat pump with backheat according to claim 1 to 5 any one, is characterized in that: be equipped with one section of flexible pipe (15) between the gases at high pressure outlet of compressor and the import of oil eliminator and between the Working medium gas import of regenerator (8) and compressor (1).
7. a kind of ultra-low-loop temperature air source heat pump with backheat according to claim 1 to 5 any one, is characterized in that: reservoir (6) is provided with safety valve structure (16).
8. a kind of ultra-low-loop temperature air source heat pump with backheat according to claim 1 to 5 any one, it is characterized in that: compressor (1) is provided with water cooling cylinder cover, the water inlet of water cooling cylinder cover is communicated with the water inlet pipe of condenser (2), the delivery port of water cooling cylinder cover is communicated with the outlet pipe of condenser (2), and the connecting pipeline of the outlet pipe of the delivery port of water cooling cylinder cover and condenser (2) is provided with magnetic valve (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520043618.6U CN204555425U (en) | 2015-01-22 | 2015-01-22 | A kind of ultra-low-loop temperature air source heat pump with backheat |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520043618.6U CN204555425U (en) | 2015-01-22 | 2015-01-22 | A kind of ultra-low-loop temperature air source heat pump with backheat |
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| CN204555425U true CN204555425U (en) | 2015-08-12 |
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| CN201520043618.6U Active CN204555425U (en) | 2015-01-22 | 2015-01-22 | A kind of ultra-low-loop temperature air source heat pump with backheat |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928275A (en) * | 2016-05-06 | 2016-09-07 | 宁波工程学院 | Heat pump |
| CN105928252A (en) * | 2016-05-06 | 2016-09-07 | 宁波工程学院 | Heat pump |
| CN105928251A (en) * | 2016-05-06 | 2016-09-07 | 宁波工程学院 | Heat pump |
| CN106440460A (en) * | 2016-10-26 | 2017-02-22 | 广东高而美制冷设备有限公司 | Air conditioner heat pump supercooling system and working method thereof |
-
2015
- 2015-01-22 CN CN201520043618.6U patent/CN204555425U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928275A (en) * | 2016-05-06 | 2016-09-07 | 宁波工程学院 | Heat pump |
| CN105928252A (en) * | 2016-05-06 | 2016-09-07 | 宁波工程学院 | Heat pump |
| CN105928251A (en) * | 2016-05-06 | 2016-09-07 | 宁波工程学院 | Heat pump |
| CN106440460A (en) * | 2016-10-26 | 2017-02-22 | 广东高而美制冷设备有限公司 | Air conditioner heat pump supercooling system and working method thereof |
| CN106440460B (en) * | 2016-10-26 | 2022-04-26 | 广东高而美制冷设备有限公司 | Supercooling system of air conditioner heat pump and working method of supercooling system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 315336 Workshop No. 173 Binhai Second Road, Hangzhou Bay New Area, Ningbo City, Zhejiang Province-C7 Patentee after: Ningbo Meike Carbon Dioxide Heat Pump Technology Co., Ltd. Address before: 315326 Luan Highway 875, Cangtian Village, Changhe Town, Cixi City, Zhejiang Province Patentee before: Ningbo Sai Sen energy-saving equipment Co., Ltd |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201112 Address after: 300 000 Tianjin Binhai New Area Free Trade Test Zone (Airport Economic Zone) No. 109 East Seven Road Patentee after: CHINA RAILWAY DESIGN Corp. Patentee after: Ningbo Meike Carbon Dioxide Heat Pump Technology Co.,Ltd. Address before: 315336 Workshop No. 173 Binhai Second Road, Hangzhou Bay New Area, Ningbo City, Zhejiang Province-C7 Patentee before: Ningbo Meike Carbon Dioxide Heat Pump Technology Co.,Ltd. |