CN220229612U - Air source heat pump system - Google Patents
Air source heat pump system Download PDFInfo
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- CN220229612U CN220229612U CN202321081070.5U CN202321081070U CN220229612U CN 220229612 U CN220229612 U CN 220229612U CN 202321081070 U CN202321081070 U CN 202321081070U CN 220229612 U CN220229612 U CN 220229612U
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- heat exchanger
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- side heat
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- port
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 101
- 238000010438 heat treatment Methods 0.000 claims abstract description 58
- 239000007788 liquid Substances 0.000 claims abstract description 37
- 238000010257 thawing Methods 0.000 abstract description 13
- 238000005057 refrigeration Methods 0.000 abstract description 7
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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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]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The utility model discloses an air source heat pump system which comprises a wind side heat exchanger, a compressor, a gas-liquid separator, a heating heat exchanger, a water side heat exchanger and a four-way valve, wherein the four-way valve is provided with a D port, an E port, a C port and an S port. The compressor outlet E1 is communicated with the four-way valve D, the four-way valve C is communicated with the first inlet a1 of the water side heat exchanger, a low-temperature electronic expansion valve is arranged on a pipeline between the first outlet C2 of the heating heat exchanger and the inlet of the wind side heat exchanger, the outlet of the wind side heat exchanger is connected with the four-way valve E, and the four-way valve S is connected with the inlet of the gas-liquid separator. The low-temperature electronic expansion valve has the advantages that the pipeline design scheme is simple, the flow rate of the low-temperature electronic expansion valve is increased along with the opening degree, the slope is increased suddenly, the requirement of low flow rate during low-loop temperature heating can be met, the requirement of high flow rate during high-loop temperature can also be met, and particularly, the complex structure of combining the electronic expansion valve with a refrigeration capillary tube in the prior art is replaced during refrigeration and defrosting.
Description
Technical Field
The utility model relates to the technical field of heat pump systems, in particular to an air source heat pump system.
Background
The air source heat pump system is commonly used for refrigerating or heating operation at present, the system adopts a small amount of electric energy to drive a compressor to operate, and high-pressure liquid working medium is evaporated into a gas state in a wind side heat exchanger after passing through an expansion valve and absorbs a large amount of heat energy from the air; the gaseous working medium is compressed into high-temperature and high-pressure liquid by a compressor, and then enters a water side heat exchanger to release heat to heat water, so that the water can be heated to 50-65 ℃ continuously and circularly.
The air source heat pump system disclosed at present is characterized in that a group of electromagnetic valves (one-way valves) +refrigerating capillaries are connected in parallel on a main circuit electronic expansion valve, and the main circuit electronic expansion valve is matched for defrosting, so that the defrosting efficiency is low, the cost is high, the pipeline is complex, and the failure rate is high.
Disclosure of Invention
The utility model aims to overcome the defects of the above conditions and provide an air source heat pump system which has the advantages of simple pipeline structure, high defrosting efficiency and more stable performance, and can rapidly supplement flow.
In order to achieve the above purpose, the present utility model provides the following technical solutions: an air source heat pump system comprises a wind side heat exchanger, a compressor, a gas-liquid separator, a heating heat exchanger, a water side heat exchanger and a four-way valve, wherein the four-way valve is provided with a D port, an E port, a C port and an S port.
The compressor outlet e 1 Is communicated with a port D of the four-way valve, and the water side heat exchanger comprises a first inlet a 1 A first outlet a 2 Four-way valve C port and water side heat exchanger first inlet a 1 The first outlet a of the water side heat exchanger is communicated with 2 With the first inlet c of the heating heat exchanger 1 Connected with the first outlet c of the heating heat exchanger 2 Is connected with the inlet of the wind side heat exchanger, and the first outlet c of the heating heat exchanger 2 A low-temperature electronic expansion valve is arranged on a pipeline between the air side heat exchanger inlet and the air side heat exchanger inlet, the air side heat exchanger outlet is connected with a four-way valve E port, the four-way valve S port is connected with a gas-liquid separator inlet, and the gas-liquid separator outlet is connected with a compressor first inlet E 2 Are connected. The compressor is driven to operate by a small amount of electric energy, and the working medium in the pipeline is heated and then enters the water side heat exchanger to exchange heat with the terminal water, so that the water supply temperature of the terminal water is ensured. The low-temperature electronic expansion valve is used in the circulation pipeline, the flow rate of the low-temperature electronic expansion valve is increased along with the opening degree, the slope of the low-temperature electronic expansion valve is increased suddenly, the requirement of low flow rate during low-loop temperature heating can be met, the requirement of high flow rate during high-loop temperature can also be met, and particularly, the complex structure of combining the electronic expansion valve with a refrigeration capillary tube in the prior art is replaced during refrigeration and defrosting.
As a further scheme of the utility model: the heating heat exchanger comprises a second inlet d 1 And a second outlet d 2 The second inlet d of the heating heat exchanger 1 An auxiliary way is arranged on the water side heat exchanger, and the other end of the auxiliary way is arranged at the first outlet of the water side heat exchangerPort a 2 With the first inlet c of the heating heat exchanger 1 An auxiliary circuit electronic expansion valve is arranged on the auxiliary circuit on the pipeline between the two, and a second outlet d of the heating heat exchanger 2 And a second inlet e of the compressor 3 Are connected.
As a further scheme of the utility model: the water side heat exchanger also comprises a second inlet b 1 And a second outlet b 2 Second inlet b of water side heat exchanger 1 Is connected with a water inlet pipe and a second outlet b 2 Is connected with a water outlet pipe.
The utility model has the beneficial effects that: in the system, the low-temperature electronic expansion valve is arranged between the heating heat exchanger and the wind side heat exchanger, the flow rate of the low-temperature electronic expansion valve is increased along with the opening degree, the flow rate can be rapidly supplemented when the flow rate is required to be large, the accurate energy efficiency of flow control is improved, the defrosting is rapid, and the effect is better;
when the system is operated in a high-temperature environment, the low-temperature electronic expansion valve can change speed to adjust the flow of the refrigerant, the adjusting range is wider than that of a common electronic expansion valve, the quick defrosting is achieved, defrosting components are simplified, and the low-temperature operation stability of the unit is improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a schematic diagram of a heating mode of the present utility model;
FIG. 2 is a schematic diagram of the heating and enhanced vapor injection modes of the present utility model;
fig. 3 is a schematic diagram of the refrigeration and defrost modes of the present utility model.
In the figure: the device comprises a 1-wind side heat exchanger, a 2-compressor, a 3-four-way valve, a 4-water side heat exchanger, a 5-gas-liquid separator, a 6-low temperature electronic expansion valve, a 7-water outlet pipe, an 8-water inlet pipe, a 9-heating heat exchanger, a 10-auxiliary circuit electronic expansion valve and an 11-auxiliary circuit.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
The embodiment of the utility model discloses an air source heat pump system, which comprises a wind side heat exchanger 1, a compressor 2, a gas-liquid separator 5, a heating heat exchanger 9, a water side heat exchanger 4 and a four-way valve 3, wherein the four-way valve 3 is provided with a D port, an E port, a C port and an S port;
the compressor 2 outlet e 1 Is communicated with a port D of the four-way valve, and the water side heat exchanger 4 comprises a first inlet a 1 A first outlet a 2 Four-way valve C port and water side heat exchanger first inlet a 1 The first outlet a of the water side heat exchanger is communicated with 2 With the first inlet c of the heating heat exchanger 1 Connected, the water side heat exchanger also comprises a second inlet b 1 And a second outlet b 2 Second inlet b of water side heat exchanger 1 Is connected with a water inlet pipe and a second outlet b 2 Is connected with a water outlet pipe.
First outlet c of heating heat exchanger 2 Is connected with the inlet of the wind side heat exchanger 1, and the first outlet c of the heating heat exchanger 2 A low-temperature electronic expansion valve 6 is arranged on a pipeline between the air side heat exchanger inlet and the air side heat exchanger inlet, the air side heat exchanger outlet is connected with a four-way valve E port, the four-way valve S port is connected with a gas-liquid separator inlet, and the gas-liquid separator outlet is connected with a compressor first inlet E 2 Are connected.
The heating heat exchanger comprises a second inlet d 1 And a second outlet d 2 The second inlet d of the heating heat exchanger 1 An auxiliary passage 11 is arranged on the water side heat exchanger, and the other end of the auxiliary passage 11 is arranged at a first outlet a of the water side heat exchanger 2 With the first inlet c of the heating heat exchanger 1 An auxiliary circuit electronic expansion valve 10 is arranged on the auxiliary circuit 11 on the pipeline between the two, and a second outlet d of the heating heat exchanger 2 And a second inlet e of the compressor 3 Are connected.
Under different use demands, the air source heat pump system is adjusted to different modes, and the system comprises a heating mode, a heating and vapor injection enthalpy increasing mode, a refrigerating mode and a defrosting mode.
Example 1
Referring to FIG. 1, in the present embodiment, the system starts a heating mode in a low-temperature stage ultra-low temperature state of-10 ℃ to-36 ℃, the compressor outlet e 1 And four-way valveD port is communicated, the compressor 2 is electrified and started, the medium and low-temperature working medium in the system is heated, and the temperature is raised, and the outlet e of the compressor is provided 1 The discharged high-temperature high-pressure gaseous working medium enters a four-way valve D port, and the four-way valve C port and a first inlet a of the water side heat exchanger 1 And the high-temperature high-pressure gaseous working medium enters the water side heat exchanger along the C port of the four-way valve.
The water side heat exchanger 4 further comprises a second inlet b 1 And a second outlet b 2 Second inlet b of water side heat exchanger 1 Is connected with a water inlet pipe 8 and a second outlet b 2 A water outlet pipe 7 is connected with a water terminal. Circulating water in the water inlet pipe 8 continuously enters the water side heat exchanger 4 and flows out of the water outlet pipe 7, low-temperature circulating water flows into the water side heat exchanger 4 from the water inlet pipe, the low-temperature circulating water exchanges heat with heat released by the high-temperature high-pressure gaseous working medium in the water side heat exchanger 4 to rise temperature, and the high-temperature circulating water flows into a water terminal from the water outlet pipe for use; the high-temperature high-pressure gaseous working medium is condensed into a liquid working medium.
First outlet a of water side heat exchanger 2 With the first inlet c of the heating heat exchanger 1 The liquid working medium cooled by the water side heat exchanger flows through the heating heat exchanger 9 to be condensed again, and the first outlet c of the heating heat exchanger is connected 2 Is connected with the inlet of the wind side heat exchanger 1, and the first outlet c of the heating heat exchanger 2 The pipeline between the air side heat exchanger and the inlet of the air side heat exchanger is provided with a low-temperature electronic expansion valve 6, the flow is accurately controlled by the low-temperature electronic expansion valve 6, and after throttling, the low-temperature low-pressure gas-liquid two-phase working medium is converted into low-temperature low-pressure gas-liquid two-phase working medium and enters the air side heat exchanger to be evaporated.
The outlet of the wind side heat exchanger 1 is connected with the inlet of a four-way valve E, the inlet of the four-way valve S is connected with the inlet of a gas-liquid separator, and the outlet of the gas-liquid separator is connected with the first inlet E of the compressor 2 Are connected. The gas-liquid two-phase working medium after absorbing heat is converted into low-temperature superheated gas, flows through the port E of the four-way valve and then passes through the port S, and then returns to the compressor 2 for compression after passing through the gas-liquid separator 5, and continuously circulates, and continuously outputs heat to circulating water in the water side heat exchanger 4.
Example 2
Referring to fig. 2, in the present embodiment, the system starts a heating mode and an enhanced vapor injection mode in a low-temperature or ultra-low-temperature environment.
During heating, the compressor 2 is electrified and started to heat medium at low temperature in the system, and the outlet e of the compressor is used for heating 1 The discharged high-temperature high-pressure gaseous working medium enters the port D of the four-way valve, and the high-temperature high-pressure gaseous working medium enters the water side heat exchanger 4 along the port C of the four-way valve.
The second inlet b of the water side heat exchanger 4 1 Is connected with a water inlet pipe and a second outlet b 2 Is connected with a water outlet pipe, and the water outlet pipe 7 is connected with a water terminal. Circulating water in the water inlet pipe 8 continuously enters the water side heat exchanger 4 and flows out of the water outlet pipe 7, low-temperature circulating water flows into the water side heat exchanger 4 from the water inlet pipe, the low-temperature circulating water exchanges heat with heat released by the high-temperature high-pressure gaseous working medium in the water side heat exchanger 4 to rise temperature, and the high-temperature circulating water flows into a water terminal from the water outlet pipe for use; at the same time, the high-temperature high-pressure gaseous working medium is condensed into liquid working medium.
The liquid working medium cooled by the water side heat exchanger 4 flows through the heating heat exchanger 9 to be condensed again, and flows through the first outlet c of the heating heat exchanger 2 After the low-temperature electronic expansion valve 6 is arranged on a pipeline between the low-temperature electronic expansion valve 6 and the inlet of the wind side heat exchanger for throttling, the low-temperature electronic expansion valve 6 can change the speed to adjust the flow of the refrigerant when running in a low-temperature environment; the gas-liquid two-phase working medium converted into low temperature and low pressure enters the wind side heat exchanger 1 for evaporation.
The low-temperature low-pressure gas-liquid two-phase working medium after absorbing heat is converted into low-temperature superheated gas, flows through the port E of the four-way valve and then passes through the port S, and then returns to the compressor 2 for compression through the gas-liquid separator 5, and continuously circulates, and continuously outputs heat to circulating water in the water side heat exchanger 4.
The jet enthalpy increasing mode is started during heating, and the heating heat exchanger comprises a second inlet d 1 And a second outlet d 2 The second inlet d of the heating heat exchanger 1 An auxiliary passage 11 is arranged on the water side heat exchanger, and the other end of the auxiliary passage is arranged at the first outlet a of the water side heat exchanger 2 With the first inlet c of the heating heat exchanger 1 On the pipeline between the two, an auxiliary electronic expansion valve 10 is arranged on the auxiliary, and in the process that the liquid working medium cooled by the water side heat exchanger 4 flows through the heating heat exchanger 9, a part of the working medium is separated from the auxiliary 11 and passes through waterThe cooled liquid working medium of the side heat exchanger is throttled by the auxiliary circuit electronic expansion valve 10 and then is converted into a low-temperature low-pressure gas-liquid two-phase working medium which is fed into the second inlet d of the heating heat exchanger 9 1 And the heat is exchanged with the liquid working medium cooled by the water side heat exchanger 4 in the heating heat exchanger 9. On the one hand, the liquid working medium cooled by the water side heat exchanger is heated and warmed, throttled by the low-temperature electronic expansion valve 6 and then converted into a low-temperature low-pressure gas-liquid two-phase working medium to enter the wind side heat exchanger 1 for evaporation.
On the other hand, the second inlet d in the heating heat exchanger 9 1 And a second outlet d 2 The low-temperature low-pressure gas-liquid two-phase working medium is converted into low-temperature overheat gas after absorbing heat, and the second outlet d of the heating heat exchanger 9 2 And a second inlet e of the compressor 3 Connected with the second outlet d of the heating heat exchanger 9 for low-temperature overheat gas 2 Flows out from the second inlet e of the compressor 2 3 And the air flows back to the compressor for compression, so that the heating performance of the compressor under the low-temperature or ultralow-temperature working condition is improved, and the heating energy efficiency of the unit is improved.
Example 3
Referring to fig. 3, in the present embodiment, the system starts a cooling and defrosting mode;
during refrigeration, the compressor 2 is electrified and started to heat medium at low temperature in the system, and the outlet e of the compressor 1 The discharged high-temperature high-pressure gaseous working medium enters a port D of a four-way valve, the high-temperature high-pressure gaseous working medium enters a wind side heat exchanger 1 along a port E of the four-way valve to release heat, and then is throttled by a low-temperature electronic expansion valve 6, and then is converted into a low-temperature low-pressure gas-liquid two-phase working medium, the low-temperature low-pressure gas-liquid two-phase working medium flows through a heating heat exchanger 9 and then enters a water side heat exchanger, the working medium which absorbs heat in circulating water in the water side heat exchanger is converted into low-temperature superheated gas, the absorbed heat in the gasification process cools the circulating water, and the cooled circulating water flows from a water outlet pipe to a water terminal for use; from the first inlet a, the low-temperature superheated gas 1 After flowing out and flowing through the C port and the S port of the four-way valve, the water enters the gas-liquid separator 5 and then returns to the compressor 2 for compression, and the water continuously circulates, and continuously absorbs the heat of the circulating water in the water side heat exchanger 4 for refrigeration.
When defrosting, the compressor 2 is electrified and started to heat the medium at low temperature in the system, and the outlet e of the compressor 1 The discharged high-temperature high-pressure gaseous working medium enters the port D of the four-way valve, the high-temperature high-pressure gaseous working medium enters the wind side heat exchanger 1 along the port E of the four-way valve to release heat, and then the flow of the working medium is amplified by the low-temperature electronic expansion valve 6 to realize rapid defrosting, and in the refrigerating and defrosting modes, the auxiliary circuit electronic expansion valve is in a closed state.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The air source heat pump system is characterized by comprising a wind side heat exchanger (1), a compressor (2), a gas-liquid separator (5), a heating heat exchanger (9), a water side heat exchanger (4) and a four-way valve (3), wherein the four-way valve (3) is provided with a D port, an E port, a C port and an S port;
the compressor outlet e 1 Is communicated with a port D of the four-way valve, and the water side heat exchanger comprises a first inlet a 1 A first outlet a 2 Four-way valve C port and water side heat exchanger first inlet a 1 The first outlet a of the water side heat exchanger is communicated with 2 With the first inlet c of the heating heat exchanger 1 Connected with the first outlet c of the heating heat exchanger 2 Is connected with the inlet of the wind side heat exchanger, and the first outlet c of the heating heat exchanger 2 A low-temperature electronic expansion valve (6) is arranged on a pipeline between the air side heat exchanger inlet and the air side heat exchanger inlet, the air side heat exchanger outlet is connected with a four-way valve E port, the four-way valve S port is connected with a gas-liquid separator inlet, and the gas-liquid separator outlet is connected with a compressor first inlet E 2 Are connected.
2. An air source heat pump system according to claim 1, wherein the heating heat exchanger comprises a second inlet d 1 And a second outlet d 2 The second inlet d of the heating heat exchanger 1 An auxiliary road (11) is arranged on the upper part, and the other end of the auxiliary road (11) is provided withAt the first outlet a of the water side heat exchanger 2 With the first inlet c of the heating heat exchanger 1 An auxiliary circuit electronic expansion valve (10) is arranged on the auxiliary circuit (11) on the pipeline between the two, and a second outlet d of the heating heat exchanger 2 And a second inlet e of the compressor 3 Are connected.
3. An air source heat pump system according to claim 1, wherein the water side heat exchanger further comprises a second inlet b 1 And a second outlet b 2 Second inlet b of water side heat exchanger 1 Is connected with a water inlet pipe (8), a second outlet b 2 Is connected with a water outlet pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321081070.5U CN220229612U (en) | 2023-05-08 | 2023-05-08 | Air source heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321081070.5U CN220229612U (en) | 2023-05-08 | 2023-05-08 | Air source heat pump system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220229612U true CN220229612U (en) | 2023-12-22 |
Family
ID=89189054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321081070.5U Active CN220229612U (en) | 2023-05-08 | 2023-05-08 | Air source heat pump system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220229612U (en) |
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2023
- 2023-05-08 CN CN202321081070.5U patent/CN220229612U/en active Active
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