CN201062900Y - Low temperature air-cooling hot pump system - Google Patents
Low temperature air-cooling hot pump system Download PDFInfo
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- CN201062900Y CN201062900Y CNU2007200410868U CN200720041086U CN201062900Y CN 201062900 Y CN201062900 Y CN 201062900Y CN U2007200410868 U CNU2007200410868 U CN U2007200410868U CN 200720041086 U CN200720041086 U CN 200720041086U CN 201062900 Y CN201062900 Y CN 201062900Y
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- pipeline
- compressor
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- side heat
- flash vessel
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Abstract
The utility model relates to a low temperature air cooling heat pump system, which has good heating effect and reliable and highly efficient operation under the outdoor low temperature environment. According to technical proposal provided by the utility model, an air outlet of a compressor is connected with an inlet end of a water side heat exchanger through a pipe, and an outlet end of the water side heat exchanger is connected with an inlet end of a flash evaporator through the pipe. An air outlet and a liquid outlet of the flash evaporator are respectively connected with an auxiliary air suction port and an air suction port of the compressor through the pipe. Two check valves, by which the flash evaporator is opened to the compressor, are respectively arranged between the air outlet of the flash evaporator and the auxiliary air suction port of the compressor and between the liquid outlet of the flash evaporator and the air suction port of the compressor. The middle air replenishing of the utility model is carried out by the flash evaporator, so that the quasi two-stage compression of the compressor is realized, the heating capacity and the performance coefficient of the system are heightened, and the safe, reliable and economical operation of the system under the low temperature heating operating condition can be fulfilled.
Description
Technical field
The utility model relates to the air source heat pump technical field, relates in particular to a kind of low-temperature air-cooling heat pump system that has good heating effect and can reliably efficiently move under outdoor low temperature environment.
Background technology
Traditional air-cooled heat pump unit, the mode that heats as a kind of energy-conserving and environment-protective has obtained application in non-heating regions such as China middle and lower reach of Yangtze River, south China.But in vast heating areas such as China Huanghe valley, North Chinas, in the winter of cold, because pressure ratio is big, refrigerant flow is low, and the heating capacity of traditional air-cooled heat pump unit is decayed significantly, can't satisfy the requirement of heat supply heating, also can't reliability service.Traditional air-cooled heat pump air-conditioning system generally can only be used under the environment more than-5 ℃.Therefore, press for a kind of energy-conserving and environment-protective that can overcome above problem of exploitation and can be at the air-cooled heat pump unit of reliability service under the low temperature environment.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of and can normally move and have the low-temperature air-cooling heat pump system of good heating effect under northern area outdoor cryogenic conditions in winter.
The technical scheme that provides according to the utility model, the exhaust outlet of compressor is connected by pipeline with the entrance point of water-side heat, the port of export of water-side heat is connected with the entrance point of flash vessel by pipeline, the gas outlet of flash vessel is connected by pipeline with air entry with the auxiliary air entry of compressor respectively by pipeline with liquid outlet, on the pipeline between the auxiliary air entry of the gas outlet of flash vessel and compressor, be provided with the check valve of opening to compressor by flash vessel, on the pipeline between the air entry of the liquid outlet of flash vessel and compressor, be provided with the check valve of opening to compressor by flash vessel.
Be provided with reservoir on the pipeline between water-side heat and the flash vessel, be connected by pipeline between the outlet of water-side heat and the entrance point of reservoir, the port of export of reservoir is connected by pipeline with the entrance point of flash vessel.On the pipeline between the entrance point of the port of export of reservoir and flash vessel, be provided with first order throttle part.Described reservoir is the device for storing liquid that two-way circulates.On the liquid outlet of flash vessel and the pipeline between the air entry, be provided with air side heat exchanger.
Be provided with gas-liquid separator on the pipeline between air side heat exchanger and the compressor, the entrance point of gas-liquid separator links to each other by pipeline with the port of export of air side heat exchanger, and the port of export of gas-liquid separator links to each other by pipeline with the air entry of compressor.On the pipeline between check valve and the air side heat exchanger, be provided with second level throttle part.
On the pipeline between the entrance point of the port of export of the entrance point of the exhaust outlet of compressor, water-side heat, air side heat exchanger and gas-liquid separator, be provided with cross valve.Described water-side heat is plate type heat exchanger or double pipe heat exchanger.Described first order throttle part is electric expansion valve or capillary; Described second level throttle part is electric expansion valve or some groups of capillaries and combining structure in parallel again after magnetic valve is connected.
The utility model carries out the centre tonifying Qi by flash vessel, realizes the accurate secondary compression of compressor, has improved the heating capacity and the coefficient of performance of system, has realized under the low-temperature heating operating mode the safe and reliable economical operation of system.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present utility model.
The specific embodiment
As shown in the figure: the exhaust outlet 1 of compressor 1
b Entrance point 3 with water-side heat 3
aConnect the port of export 3 of water-side heat 3 by pipeline
bGas-liquid mixture entrance point 6 by pipeline and flash vessel 6
aConnect the gas outlet 6 of flash vessel 6
bWith liquid outlet 6
cBy pipeline respectively with the auxiliary air entry 1 of compressor 1
c1a is connected by pipeline with air entry, in the gas outlet 6 of flash vessel 6
bAuxiliary air entry 1 with compressor 1
cBetween pipeline be provided with the check valve of opening to compressor 1 by flash vessel 67, at the liquid outlet 6 of flash vessel 6
cAir entry 1 with compressor 1
aBetween pipeline be provided with the check valve of opening to compressor 1 by flash vessel 68.
On the pipeline between water-side heat 3 and the flash vessel 6, be provided with reservoir 4, the outlet 3 of water-side heat 3
b Entrance point 4 with reservoir 4
aBetween connect the port of export 4 of reservoir 4 by pipeline
bEntrance point 6 with flash vessel 6
aConnect by pipeline.The port of export 4 at reservoir 4
bGas-liquid mixture entrance point 6 with flash vessel 6
aBetween pipeline be provided with first order throttle part 5.Described reservoir 4 is the device for storing liquid that two-way circulates.Liquid outlet 6 at flash vessel 6
cWith air entry 1
aBetween pipeline be provided with air side heat exchanger 10.
On the pipeline between air side heat exchanger 10 and the compressor 1, be provided with gas-liquid separator 11, the entrance point 11 of gas-liquid separator 11
aThe port of export 10 with air side heat exchanger 10
bLink to each other the port of export 11 of gas-liquid separator 11 by pipeline
bAir entry 1 with compressor 1
aLink to each other by pipeline.On the pipeline between check valve 8 and the air side heat exchanger 10, be provided with second level throttle part 9.
Exhaust outlet 1 at compressor 1
b, water-side heat 3 entrance point 3
a, air side heat exchanger 10 the port of export 10
b Entrance point 11 with gas-liquid separator 11
aBetween pipeline be provided with cross valve 2.Described water-side heat 3 is plate type heat exchanger or double pipe heat exchanger.
Described first order throttle part 5 is electric expansion valve or capillary; Described second level throttle part 9 is electric expansion valve or some groups of capillaries and combining structure in parallel again after magnetic valve is connected.
At reservoir 4 ports of export 4
bAnd set up pipeline between check valve 8 and the second level throttle part 9, and only on this pipeline, be provided with by second level throttle part 9 to reservoir 4 ports of export 4
bThe check valve of opening 12.
The course of work of low-temperature air-cooling heat pump of the present utility model system is as follows:
When heating, the exhaust outlet 1 of screw compressor 1
bThe high-temperature high-pressure refrigerant gas of discharging enters water-side heat 3 through cross valve 2, after adding medium such as hot water produce heating effect in water-side heat 3, is condensed into refrigerant liquid, enters reservoir 4.Flow through reservoir 4 ports of export 4
bLiquid refrigerant after 5 throttlings of first order throttle part, become gas-liquid mixture, through gas-liquid mixture entrance point 6
aEnter flash vessel 6, the further shwoot of gas-liquid mixture separates in flash vessel 6, and top is the gas of medium temperature and medium pressure, and the bottom is the liquid of medium temperature and medium pressure.The gas of medium temperature and medium pressure is through the gas outlet 6 of flash vessel 6
bWith check valve 7 (or magnetic valve, carry out make-break operation under certain condition), by the auxiliary air entry 1 of compressor 1
cEnter screw compressor 1, with air entry 1 from compressor 1
aThe gaseous refrigerant that is compressed to intermediate pressure that enters mixes, and this has not only increased the inspiratory capacity of compressor 1, and plays cooling effect.The liquid refrigerant of medium temperature and medium pressure is through the liquid outlet 6 of flash vessel
cEnter check valve 8, enter air side heat exchanger 10 by the gas-liquid mixture that becomes low-temp low-pressure behind the second level throttle part 9 again, evaporation becomes the low-temperature low-pressure refrigerant steam after the heat exchange, then through cross valve 2 and gas-liquid separator 11, from the air entry 1 of screw compressor 1
aSuck screw compressor 1, the accurate secondary compression of compressed machine 1 and with the mixed process of the gaseous refrigerant of medium temperature and medium pressure after, high-temperature high-pressure refrigerant gas is by the exhaust outlet 1 of screw compressor 1
bDischarge, thereby finish the whole circulation that heats.
During refrigeration, the exhaust outlet 1 of screw compressor 1
bThe high-temperature high-pressure refrigerant gas of discharging enters air side heat exchanger 10 through cross valve 2, be condensed into refrigerant liquid after the heat exchange, enter second level throttle part 9, enter reservoir 4 by check valve 12 after becoming the low-temp low-pressure gas-liquid mixture after the throttling, enter water-side heat 3 then, in water-side heat 3,, become the gaseous refrigerant of low-temp low-pressure after media such as the water cooling generation refrigeration, through cross valve 2 and gas-liquid separator 11, from screw compressor 1 air entry 1
aSuck screw compressor 1, after the compressor compresses process, high-temperature high-pressure refrigerant gas is by the exhaust outlet 1 of screw compressor 1
bDischarge, thereby finish whole kind of refrigeration cycle.
Claims (10)
1. low-temperature air-cooling heat pump system is characterized in that: comprise compressor (1), water-side heat (3), with flash vessel (6), the exhaust outlet (1 of compressor (1)
b) with the entrance point (3 of water-side heat (3)
a) connect the port of export (3 of water-side heat (3) by pipeline
b) gas-liquid mixture entrance point (6 by pipeline and flash vessel (6)
a) connect the gas outlet (6 of flash vessel (6)
b) and liquid outlet (6
c) by pipeline respectively with the auxiliary air entry (1 of compressor (1)
c) be connected by pipeline with air entry (1a), in the gas outlet (6 of flash vessel (6)
b) with the auxiliary air entry (1 of compressor (1)
c) between pipeline be provided with the check valve of opening to compressor (1) by flash vessel (6) (7), at the liquid outlet (6 of flash vessel (6)
c) with the air entry (1 of compressor (1)
a) between pipeline be provided with the check valve of opening to compressor (1) by flash vessel (6) (8).
2. low-temperature air-cooling heat pump as claimed in claim 1 system is characterized in that: be provided with reservoir (4) on the pipeline between water-side heat (3) and the flash vessel (6), the outlet (3 of water-side heat (3)
b) with the entrance point (4 of reservoir (4)
a) between connect the port of export (4 of reservoir (4) by pipeline
b) with the entrance point (6 of flash vessel (6)
a) connect by pipeline.
3. low-temperature air-cooling heat pump as claimed in claim 1 system is characterized in that: at the port of export (4 of reservoir (4)
b) with the gas-liquid mixture entrance point (6 of flash vessel (6)
a) between pipeline be provided with first order throttle part (5).
4. as claim 1,2 or 3 described low-temperature air-cooling heat pump systems, it is characterized in that: described reservoir (4) is the device for storing liquid that two-way circulates.
5. low-temperature air-cooling heat pump as claimed in claim 1 system is characterized in that: at the liquid outlet (6 of flash vessel (6)
c) and air entry (1
a) between pipeline be provided with air side heat exchanger (10).
6. low-temperature air-cooling heat pump as claimed in claim 1 system is characterized in that: be provided with gas-liquid separator (11) on the pipeline between air side heat exchanger (10) and the compressor (1), the entrance point (11 of gas-liquid separator (11)
a) with the port of export (10 of air side heat exchanger (10)
b) link to each other the port of export (11 of gas-liquid separator (11) by pipeline
b) with the air entry (1 of compressor (1)
a) link to each other by pipeline.
7. low-temperature air-cooling heat pump as claimed in claim 1 system is characterized in that: be provided with second level throttle part (9) on the pipeline between check valve (8) and the air side heat exchanger (10).
8. low-temperature air-cooling heat pump as claimed in claim 1 system is characterized in that: at the exhaust outlet (1 of compressor (1)
b), the entrance point (3 of water-side heat (3)
a), the port of export (10 of air side heat exchanger (10)
b) with the entrance point (11 of gas-liquid separator (11)
a) between pipeline be provided with cross valve (2).
9. as claim 1,2 or 8 described low-temperature air-cooling heat pump systems, it is characterized in that: described water-side heat (3) is plate type heat exchanger or double pipe heat exchanger.
10. low-temperature air-cooling heat pump as claimed in claim 1 system, it is characterized in that: described first order throttle part (5) is electric expansion valve or capillary; Described second level throttle part (9) is electric expansion valve or some groups of capillaries and combining structure in parallel again after magnetic valve is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200410868U CN201062900Y (en) | 2007-07-30 | 2007-07-30 | Low temperature air-cooling hot pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200410868U CN201062900Y (en) | 2007-07-30 | 2007-07-30 | Low temperature air-cooling hot pump system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201062900Y true CN201062900Y (en) | 2008-05-21 |
Family
ID=39451280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200410868U Expired - Lifetime CN201062900Y (en) | 2007-07-30 | 2007-07-30 | Low temperature air-cooling hot pump system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201062900Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101403543B (en) * | 2008-05-26 | 2010-06-09 | 刘雄 | Air conditioner heat pump |
| CN102032726A (en) * | 2010-11-25 | 2011-04-27 | 广东美的电器股份有限公司 | Air conditioner capable of improving low-temperature heating capacity |
| CN103423919A (en) * | 2012-05-23 | 2013-12-04 | 约克广州空调冷冻设备有限公司 | Air-source heat pump system and defrosting and draining method for same |
| WO2014177059A1 (en) * | 2013-05-03 | 2014-11-06 | 珠海格力电器股份有限公司 | Dual-stage enthalpy-increasing air-conditioning system |
| CN105299947A (en) * | 2014-06-19 | 2016-02-03 | 美的集团股份有限公司 | Air-conditioning system |
| CN105674634A (en) * | 2016-01-18 | 2016-06-15 | 山西永有制冷科技有限公司 | Freon hydraulic filling type system flashing barrel economizer |
| CN106705308A (en) * | 2017-02-03 | 2017-05-24 | 江苏乐科节能科技股份有限公司 | Mechanical flash type air conditioning refrigeration system and working method thereof |
-
2007
- 2007-07-30 CN CNU2007200410868U patent/CN201062900Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101403543B (en) * | 2008-05-26 | 2010-06-09 | 刘雄 | Air conditioner heat pump |
| CN102032726A (en) * | 2010-11-25 | 2011-04-27 | 广东美的电器股份有限公司 | Air conditioner capable of improving low-temperature heating capacity |
| CN103423919A (en) * | 2012-05-23 | 2013-12-04 | 约克广州空调冷冻设备有限公司 | Air-source heat pump system and defrosting and draining method for same |
| CN103423919B (en) * | 2012-05-23 | 2016-06-29 | 约克广州空调冷冻设备有限公司 | Air source heat pump system and the defrost fluid-discharge method for this air source heat pump system |
| WO2014177059A1 (en) * | 2013-05-03 | 2014-11-06 | 珠海格力电器股份有限公司 | Dual-stage enthalpy-increasing air-conditioning system |
| US9803894B2 (en) | 2013-05-03 | 2017-10-31 | Gree Electric Appliances, Inc. Of Zhuhai | Dual-stage enthalpy-increasing air-conditioning system |
| CN105299947A (en) * | 2014-06-19 | 2016-02-03 | 美的集团股份有限公司 | Air-conditioning system |
| CN105299947B (en) * | 2014-06-19 | 2018-06-29 | 美的集团股份有限公司 | Air-conditioning system |
| CN105674634A (en) * | 2016-01-18 | 2016-06-15 | 山西永有制冷科技有限公司 | Freon hydraulic filling type system flashing barrel economizer |
| CN106705308A (en) * | 2017-02-03 | 2017-05-24 | 江苏乐科节能科技股份有限公司 | Mechanical flash type air conditioning refrigeration system and working method thereof |
| CN106705308B (en) * | 2017-02-03 | 2022-05-03 | 江苏乐科节能科技股份有限公司 | Mechanical flash evaporation type air conditioner refrigeration system and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080521 |
|
| CX01 | Expiry of patent term |