CN105674609A - Heat recoverer structure and air-cooled heat pump unit - Google Patents
Heat recoverer structure and air-cooled heat pump unit Download PDFInfo
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- CN105674609A CN105674609A CN201410674704.7A CN201410674704A CN105674609A CN 105674609 A CN105674609 A CN 105674609A CN 201410674704 A CN201410674704 A CN 201410674704A CN 105674609 A CN105674609 A CN 105674609A
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- water
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- heat exchanger
- heat
- liquid separator
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention discloses a heat recoverer structure and an air-cooled heat pump unit and relates to the technical field of heat pumps. The heat recoverer structure and the air-cooled heat pump unit are designed for solving the problem that the liquid feeding pressure of an electronic expansion valve is insufficient due to the fact that the water inlet temperature of a heat exchanger of an existing heat recoverer is low. The heat recoverer structure comprises a compressor, a water heat exchanger, a condenser, an electronic expansion valve, an evaporator and a first gas-liquid separator which are connected in sequence, and the water heat exchanger is used for conducting heat exchanging with water. The heat recoverer structure further comprises a second gas-liquid separator. An inlet of the second gas-liquid separator is connected with a refrigerant outlet of the water heat exchanger. An air outlet of the second gas-liquid separator is connected with the condenser. A liquid outlet of the second gas-liquid separator is connected with the front end of the electronic expansion valve. According to the heat recoverer structure provided by the invention, gas-liquid separating is conducted on refrigerant flowing out of the water heat exchanger by additionally arranging the gas-liquid separators, the separated liquid refrigerant is directly introduced to the front end of the electronic expansion valve, and even if the water inlet temperature in the water heat exchanger is low, the effect that liquid feeding of the front end of the electronic expansion valve is sufficient can also be ensured, so that the operational reliability is greatly improved.
Description
Technical field
The present invention relates to technical field of heat pumps, particularly relate to a kind of heat regenerator structure and there is the Air-Cooled Heat Pump Unit of this heat regenerator structure.
Background technology
Existing Air-Cooled Heat Pump Unit generally to arrange water-to-water heat exchanger between condenser and compressor, and the sensible heat being reclaimed the coolant flowed out by compressor by water-to-water heat exchanger carrys out hot water preparing, thus heat is formed effective utilization, saves the energy.
But; there are the following problems for said structure: due in actual use; the inflow temperature of water-to-water heat exchanger is not definite value; when inflow temperature is on the low side, coolant not only absorbs sensible heat, also can absorption portion latent heat; cause that part coolant accumulates in after condensing in water-to-water heat exchanger bottom heat regenerator can not take away; in turn result in electric expansion valve front end feed flow not enough, running or low-voltage variation phenomenon occurring in start-up course, have a strong impact on the properly functioning of Air-Cooled Heat Pump Unit.
Summary of the invention
It is an object of the invention to propose the heat regenerator structure that during a kind of water-to-water heat exchanger off-design operating mode, before guarantee electric expansion valve, feed flow is sufficient.
Another object of the present invention is to propose a kind of reliable Air-Cooled Heat Pump Unit.
For reaching this purpose, on the one hand, the present invention by the following technical solutions:
A kind of heat regenerator structure, including the compressor being sequentially connected with, for carrying out the water-to-water heat exchanger of heat exchange, condenser, electric expansion valve, vaporizer and the first gas-liquid separator with water, also include the second gas-liquid separator, the import of described second gas-liquid separator is connected with the refrigerant exit of described water-to-water heat exchanger, the gas outlet of described second gas-liquid separator is connected with described condenser, and the liquid outlet of described second gas-liquid separator is connected with described electric expansion valve front end.
Preferably, it is provided with reversal valve between described water-to-water heat exchanger and described second gas-liquid separator, the entrance of described reversal valve is connected with the refrigerant exit of described water-to-water heat exchanger, and an outlet of reversal valve connects the import of described second gas-liquid separator, and another outlet connects described condenser.
Preferably, also including controller and the temperature sensor being connected with controller, described temperature sensor is arranged at the water inlet of described water-to-water heat exchanger.
Preferably, bottom the end of described water-to-water heat exchanger refrigerant pipeline, it is provided with liquid level sensor.
Preferably, described condenser is finned heat exchanger.
Preferably, described vaporizer is dry evaporator.
Preferably, it is connected to filter between liquid outlet and the described electric expansion valve front end of described second gas-liquid separator.
Preferably, it is connected to check valve between liquid outlet and the described electric expansion valve front end of described second gas-liquid separator.
On the other hand, the present invention is by the following technical solutions:
A kind of Air-Cooled Heat Pump Unit, described Air-Cooled Heat Pump Unit has above-mentioned heat regenerator structure.
The invention have the benefit that
Heat regenerator structure provided by the invention is additionally arranged a gas-liquid separator between water-to-water heat exchanger and condenser, coolant after water-to-water heat exchanger heat exchange initially enters and carries out gas-liquid separation in gas-liquid separator, isolated gaseous coolant enters condenser, and isolated liquid refrigerants is directly entered electric expansion valve front end, mix with the condensed liquid refrigerants of condensed device and together enter electric expansion valve throttling, even if the inflow temperature in water-to-water heat exchanger is relatively low, absorb coolant latent heat and cause that part coolant condenses, also can guarantee that the feed flow before electric expansion valve is sufficient, substantially increase reliability of operation.
Air-Cooled Heat Pump Unit provided by the invention is owing to adopting above-mentioned heat regenerator structure, reliable, and work efficiency is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of the heat regenerator structure that the embodiment of the present invention one provides;
Fig. 2 is the structural representation of the heat regenerator structure that the embodiment of the present invention two provides;
Fig. 3 is the structural representation of the heat regenerator structure that the embodiment of the present invention three provides.
In figure, 1, compressor; 2, cross valve; 3, condenser; 4, electric expansion valve; 5, vaporizer; 6, the first gas-liquid separator; 7, water-to-water heat exchanger; 71, water inlet; 72, outlet; 73, refrigerant inlet; 74, refrigerant exit; 8, the second gas-liquid separator; 9, filter; 10, check valve; 11, reversal valve; 12, temperature sensor; 13, controller; 14, liquid level sensor.
Detailed description of the invention
Technical scheme is further illustrated below in conjunction with accompanying drawing and by detailed description of the invention.
Embodiment one:
Present embodiments provide a kind of heat regenerator structure, as it is shown in figure 1, its heat pump includes the compressor 1, cross valve 2, condenser 3, electric expansion valve 4, vaporizer 5 and the first gas-liquid separator 6 that connect by the road successively. In the present embodiment, condenser 3 adopts finned heat exchanger, and vaporizer 5 adopts dry evaporator.
Water-to-water heat exchanger 7 it is provided with between compressor 1 and cross valve 2, water-to-water heat exchanger 7 has water inlet 71, outlet 72, refrigerant inlet 73 and refrigerant exit 74, the refrigerant inlet 73 of water-to-water heat exchanger 7 is connected with compressor 1, refrigerant exit 74 is connected with cross valve 2, high pressure gaseous coolant through compressor 1 compression is initially entered in water-to-water heat exchanger 7 and carries out heat exchange with water, then enter condensation in condenser 3 then through cross valve 2.
The second gas-liquid separator 8 it is additionally provided with between water-to-water heat exchanger 7 and cross valve 2, second gas-liquid separator 8 has import, gas outlet and liquid outlet, its import is connected with the refrigerant exit 74 of water-to-water heat exchanger 7, gas outlet connects condenser 3 through cross valve 2, and liquid outlet is connected to the front end of electric expansion valve 4.
The work process of this heat regenerator structure is, first high pressure gaseous coolant after compressor 1 compresses enters through the refrigerant inlet 73 of water-to-water heat exchanger 7 and carries out heat exchange in water-to-water heat exchanger 7, entered after water in water-to-water heat exchanger 7 absorbs sensible heat (being also possible to absorb the latent heat of coolant when the inflow temperature of water-to-water heat exchanger the is relatively low) heating of coolant by water inlet 71 and flowed out by outlet, coolant after heat exchange enters in the second gas-liquid separator 8 and carries out gas-liquid separation, isolated gaseous working medium enters in condenser 3 through cross valve 2, carry out flowing out after the heat exchange of latent heat is condensed into liquid refrigerants, the second isolated liquid refrigerant of gas-liquid separator 8 then directly passes into the front end of electric expansion valve 4 by the road, the liquid refrigerants flowed out with condenser 3 mixes together entrance electric expansion valve 4 place throttling, then evaporate through vaporizer 5, return in compressor 1 then through cross valve 2 and the first gas-liquid separator 6.
By setting up the second gas-liquid separator 8; even if the inflow temperature at water-to-water heat exchanger 7 is relatively low, cause part coolant condenses deposition in water-to-water heat exchanger 7; also ensure that the feed flow of electric expansion valve 4 front end is sufficient, low-voltage variation will not be caused to report to the police, substantially increase reliability of operation.
Filter 9 can be set on the pipeline of the liquid outlet and electric expansion valve 4 front end that connect the second gas-liquid separator 8, the liquid refrigerants separated is filtered, it is prevented that the liquid refrigerants impurity separated too much causes pipeline blockage. Also check valve 10 can be set on the pipeline of the liquid outlet and electric expansion valve 4 front end that connect the second gas-liquid separator 8, it is ensured that the flow direction of liquid refrigerants.
In order to improve the heat exchange efficiency in water-to-water heat exchanger 7, in water pipe adjacent in water-to-water heat exchanger 7 and condensing tube, the flow direction of medium is contrary.
Embodiment two:
Present embodiments provide a kind of heat regenerator structure, as shown in Figure 2, its structure is essentially identical with embodiment one, its heat pump includes the compressor 1, cross valve 2, condenser 3, electric expansion valve 4, vaporizer 5 and the first gas-liquid separator 6 that connect by the road successively, between compressor 1 and cross valve 2, it is provided with water-to-water heat exchanger 7, between water-to-water heat exchanger 7 and cross valve 2, is additionally provided with the second gas-liquid separator 8.
It is different in that, the present embodiment is provided with reversal valve 11 between water-to-water heat exchanger 7 and the second gas-liquid separator 8, the entrance of reversal valve 11 is connected with the refrigerant exit 74 of water-to-water heat exchanger 7, first outlet of reversal valve 11 connects the import of the second gas-liquid separator 8, and the second outlet directly connects condenser 3 through cross valve 2. Water inlet 71 place of water-to-water heat exchanger 7 is provided with temperature sensor 12, reversal valve 11 and temperature sensor 12 and is all connected with controller 13.
Preset temperature value is prestored in controller 13, when the temperature value that temperature sensor 12 detects is lower than preset temperature value, controller 13 controls the entrance of reversal valve 11 and the first outlet is connected, the coolant flowed out by water-to-water heat exchanger 7 is initially entered in the second gas-liquid separator 8 and carries out gas-liquid separation, and when the temperature value that temperature sensor 12 detects is be more than or equal to preset temperature value, without carrying out gas-liquid separation, controller 13 controls the entrance of reversal valve 11 and the second outlet is connected, make the coolant flowed out by water-to-water heat exchanger 7 directly enter condenser 3 through cross valve 2 to condense.
So can carry out the control of the coolant flow direction according to concrete operating mode, save the energy, improve the work efficiency of unit.
Embodiment three:
Present embodiments provide a kind of heat regenerator structure, as shown in Figure 3, its structure is essentially identical with embodiment one, its heat pump includes the compressor 1, cross valve 2, condenser 3, electric expansion valve 4, vaporizer 5 and the first gas-liquid separator 6 that connect by the road successively, between compressor 1 and cross valve 2, it is provided with water-to-water heat exchanger 7, between water-to-water heat exchanger 7 and cross valve 2, is additionally provided with the second gas-liquid separator 8.
It is different in that, the present embodiment is provided with reversal valve 11 between water-to-water heat exchanger 7 and the second gas-liquid separator 8, the entrance of reversal valve 11 is connected with the refrigerant exit 74 of water-to-water heat exchanger 7, first outlet of reversal valve 11 connects the import of the second gas-liquid separator 8, second outlet directly connects condenser 3 through cross valve 2, it is provided with liquid level sensor 14, liquid level sensor 14 and reversal valve 11 bottom the end of water-to-water heat exchanger 7 refrigerant pipeline and is connected to controller 13.
When liquid level sensor 14 can't detect liquid (or liquid level is lower than predetermined value), without carrying out gas-liquid separation, controller 13 controls the entrance of reversal valve 11 and the second outlet is connected, the coolant flowed out by water-to-water heat exchanger 7 is made directly to enter condenser 3 through cross valve 2, when liquid level sensor 14 detects liquid (or liquid level reaches predetermined value), controller 13 controls the entrance of reversal valve 11 and the first outlet is connected so that the coolant flowed out by water-to-water heat exchanger 7 initially enters in the second gas-liquid separator 8 and carries out gas-liquid separation.
So also can reach the effect as described in embodiment two.
Embodiment four:
Present embodiments providing a kind of Air-Cooled Heat Pump Unit, it has the heat regenerator structure as described in embodiment one or two. Owing to have employed above-mentioned heat regenerator structure so that this Air-Cooled Heat Pump Unit is reliable, work efficiency is high, substantially increases user's comfort.
The know-why of the present invention is described above in association with specific embodiment. These descriptions are intended merely to explanation principles of the invention, and can not be construed to limiting the scope of the invention by any way. Based on explanation herein, those skilled in the art need not pay performing creative labour can associate other detailed description of the invention of the present invention, and these modes fall within protection scope of the present invention.
Claims (9)
1. a heat regenerator structure, including the compressor (1) being sequentially connected with, for carrying out the water-to-water heat exchanger (7) of heat exchange with water, condenser (3), electric expansion valve (4), vaporizer (5) and the first gas-liquid separator (6), it is characterized in that: also include the second gas-liquid separator (8), the import of described second gas-liquid separator (8) is connected with the refrigerant exit (74) of described water-to-water heat exchanger (7), the gas outlet of described second separatory separator (8) is connected with described condenser (3), the liquid outlet of described second gas-liquid separator (8) is connected with described electric expansion valve (4) front end.
2. a kind of heat regenerator structure according to claim 1, it is characterized in that: between described water-to-water heat exchanger (7) and described second gas-liquid separator (8), be provided with reversal valve (11), the entrance of described reversal valve (11) is connected with the refrigerant exit (74) of described water-to-water heat exchanger (7), one outlet of described reversal valve (11) connects the import of described second gas-liquid separator (8), and another outlet connects described condenser (3).
3. a kind of heat regenerator structure according to claim 2, it is characterized in that: also including controller (13) and the temperature sensor (12) being connected with described controller (13), described temperature sensor (12) is arranged at water inlet (71) place of described water-to-water heat exchanger (7).
4. a kind of heat regenerator structure according to claim 2, it is characterised in that: bottom the end of described water-to-water heat exchanger (7) refrigerant pipeline, it is provided with liquid level sensor (14).
5. a kind of heat regenerator structure according to any one of Claims 1-4, it is characterised in that: described condenser (3) is finned heat exchanger.
6. a kind of heat regenerator structure according to any one of Claims 1-4, it is characterised in that: described vaporizer (5) is dry evaporator.
7. a kind of heat regenerator structure according to any one of Claims 1-4, it is characterised in that: it is connected to filter (9) between liquid outlet and described electric expansion valve (4) front end of described second gas-liquid separator (8).
8. a kind of heat regenerator structure according to any one of Claims 1-4, it is characterised in that: it is connected to check valve (10) between liquid outlet and described electric expansion valve (4) front end of described second gas-liquid separator (8).
9. an Air-Cooled Heat Pump Unit, it is characterised in that: described Air-Cooled Heat Pump Unit has the heat regenerator structure as described in any one of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410674704.7A CN105674609B (en) | 2014-11-21 | 2014-11-21 | A kind of heat regenerator structure and Air-Cooled Heat Pump Unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410674704.7A CN105674609B (en) | 2014-11-21 | 2014-11-21 | A kind of heat regenerator structure and Air-Cooled Heat Pump Unit |
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| Publication Number | Publication Date |
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| CN105674609A true CN105674609A (en) | 2016-06-15 |
| CN105674609B CN105674609B (en) | 2018-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410674704.7A Active CN105674609B (en) | 2014-11-21 | 2014-11-21 | A kind of heat regenerator structure and Air-Cooled Heat Pump Unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953456A (en) * | 2016-06-17 | 2016-09-21 | 上海初远环保科技有限公司 | Air source heat pump |
| CN110411049A (en) * | 2019-08-13 | 2019-11-05 | 珠海格力电器股份有限公司 | water chilling unit and control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008256281A (en) * | 2007-04-05 | 2008-10-23 | Toshiba Carrier Corp | Heat pump type water heater |
| CN103225935A (en) * | 2013-04-22 | 2013-07-31 | 重庆美的通用制冷设备有限公司 | Gas-liquid separator, air source heat recovery system, water chiller and heat pump |
| CN103940009A (en) * | 2013-01-17 | 2014-07-23 | 上海交通大学 | Air source heat pump air-conditioning system capable of providing domestic hot water |
| CN104075510A (en) * | 2013-03-27 | 2014-10-01 | 约克（无锡）空调冷冻设备有限公司 | Part heat recovery air conditioning unit and refrigerant control method thereof |
-
2014
- 2014-11-21 CN CN201410674704.7A patent/CN105674609B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008256281A (en) * | 2007-04-05 | 2008-10-23 | Toshiba Carrier Corp | Heat pump type water heater |
| CN103940009A (en) * | 2013-01-17 | 2014-07-23 | 上海交通大学 | Air source heat pump air-conditioning system capable of providing domestic hot water |
| CN104075510A (en) * | 2013-03-27 | 2014-10-01 | 约克（无锡）空调冷冻设备有限公司 | Part heat recovery air conditioning unit and refrigerant control method thereof |
| CN103225935A (en) * | 2013-04-22 | 2013-07-31 | 重庆美的通用制冷设备有限公司 | Gas-liquid separator, air source heat recovery system, water chiller and heat pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953456A (en) * | 2016-06-17 | 2016-09-21 | 上海初远环保科技有限公司 | Air source heat pump |
| CN110411049A (en) * | 2019-08-13 | 2019-11-05 | 珠海格力电器股份有限公司 | water chilling unit and control method thereof |
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| Publication number | Publication date |
|---|---|
| CN105674609B (en) | 2018-11-06 |
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