CN218154902U - Heat pump system - Google Patents
Heat pump system Download PDFInfo
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- CN218154902U CN218154902U CN202221633345.7U CN202221633345U CN218154902U CN 218154902 U CN218154902 U CN 218154902U CN 202221633345 U CN202221633345 U CN 202221633345U CN 218154902 U CN218154902 U CN 218154902U
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Abstract
The utility model relates to a heat pump technology field specifically provides a heat pump system, aims at solving the problem that current heat pump system operation efficiency is low. Therefore, the utility model discloses a heat pump system includes first refrigerant circulation circuit and second refrigerant circulation circuit, be provided with first compressor on the first refrigerant circulation circuit, first heat exchanger, first throttle component, heat exchanger in the middle of the first, heat exchanger and second heat exchanger in the middle of the second, heat exchanger is parallelly connected in the middle of with the second after heat exchanger and the second heat exchanger establish ties in the middle of the first, so that heat exchanger and the second heat exchanger in the middle of the first can insert first refrigerant circulation circuit with the heat exchanger selectivity in the middle of the second, the second compressor has set gradually on the second refrigerant circulation circuit, heat exchanger in the middle of first, second throttle component and second. Based on this, the utility model discloses can utilize the running state that the first refrigerant circulation circuit of second heat exchanger selectivity adjustment by the at utmost, effectively improve heat pump system's operation efficiency.
Description
Technical Field
The utility model relates to a heat pump technology field specifically provides a heat pump system.
Background
With the popularization of policies of energy conservation and emission reduction, industries such as food processing, textile, chemical engineering and the like use high-temperature heat pump systems to carry out high-temperature heating treatment in more and more application occasions. The industrial heating demand is strong, and the application requirements of the high-temperature heat pump system are higher and higher. First, the final heating temperature of the high temperature heat pump system is typically greater than 70 ℃ or even over 90 ℃. Secondly, the working condition span of the application environment of the heating system is very large, the environmental temperature is from-30 ℃ to 35 ℃, and high-temperature hot water or hot air needs to be provided in both winter and summer.
The high temperature hot water used in industry is high, which results in that the common heat pump system can not reach the actual heating use requirement, and the technology of using the heat pump system to provide high temperature hot water is very mature. The heat pump system generally comprises a high-pressure refrigerant circulation loop and a low-pressure refrigerant circulation loop, wherein the high-pressure refrigerant circulation loop and the low-pressure refrigerant circulation loop exchange heat through a shared intermediate heat exchanger to achieve the purpose of providing high-temperature hot water. However, the existing heat pump system still needs to be operated in a cascade mode outside a rated working condition, for example, when the outdoor environment temperature is relatively high, that is, two-stage compression is still adopted under a working condition that the temperature difference between the evaporation temperature and the condensation temperature is relatively small, the flexibility of adjustment is not high, the loss is relatively large, and further the operation energy efficiency of the heat pump system is low, and the energy waste is caused.
Accordingly, there is a need in the art for a new heat pump system that addresses the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving above-mentioned technical problem, promptly, solve the problem that current heat pump system operation efficiency is low.
The utility model provides a heat pump system, heat pump system includes first refrigerant circulation circuit and second refrigerant circulation circuit, heat exchanger and second heat exchanger in the middle of being provided with first compressor, first heat exchanger, first throttle component, first middle heat exchanger, second on the first refrigerant circulation circuit, first middle heat exchanger with the second heat exchanger is the series connection setting, just heat exchanger in the middle of first with the second heat exchanger set to establish ties the back with the heat exchanger is parallelly connected and sets up in the middle of the second, so that heat exchanger in the middle of first can with the second heat exchanger selectively inserts in the middle of the second first refrigerant circulation circuit, set gradually on the second refrigerant circulation circuit the second compressor heat exchanger in the middle of first, second throttle component and the heat exchanger in the middle of the second.
In a preferred embodiment of the heat pump system, the first refrigerant circulation loop is further provided with a first three-way valve, the first three-way valve includes an inlet and two outlets, the inlet of the first three-way valve is connected to the main path of the first refrigerant circulation loop, the first outlet of the first three-way valve is connected to the first intermediate heat exchanger, and the second outlet of the first three-way valve is connected to the second intermediate heat exchanger.
In a preferred embodiment of the heat pump system, the first refrigerant circulation loop is further provided with a second three-way valve, the second three-way valve includes two inlets and one outlet, a first inlet of the second three-way valve is connected to the second heat exchanger, a second inlet of the second three-way valve is connected to the second intermediate heat exchanger, and an outlet of the second three-way valve is connected to the main path of the first refrigerant circulation loop.
In a preferred technical solution of the heat pump system, the heat pump system further includes a bypass branch, the bypass branch is connected to the first refrigerant circulation loop, a first end of the bypass branch is connected between the first intermediate heat exchanger and the second heat exchanger, and a second end of the bypass branch is connected to an air inlet of the first compressor.
In a preferred embodiment of the heat pump system, a bypass valve is provided in the bypass branch.
In a preferred embodiment of the heat pump system, the bypass valve is a check valve, and the check valve is configured to allow only the refrigerant in the first refrigerant circulation circuit to flow from the first intermediate heat exchanger to the air inlet of the first compressor.
In a preferred embodiment of the heat pump system, the heat pump system further includes a heat exchange water path, and a part of the heat exchange water path is disposed in the first heat exchanger, so that water circulating in the heat exchange water path can exchange heat with the refrigerant circulating in the first refrigerant circulation loop through the first heat exchanger.
In a preferred technical solution of the heat pump system, the second heat exchanger includes a casing and a heat pipe, the casing is provided with a first cavity and a second cavity which are independent of each other, the heat pipe is inserted into the first cavity and the second cavity, a first heat exchange medium flows through the first cavity, a second heat exchange medium flows through the second cavity, and the first heat exchange medium and the second heat exchange medium can exchange heat through the heat pipe.
In a preferred embodiment of the heat pump system, the second heat exchanger further includes a heat insulation partition plate disposed between the first cavity and the second cavity.
In a preferred technical solution of the above heat pump system, the first intermediate heat exchanger is a plate heat exchanger; and/or the second intermediate heat exchanger is a plate heat exchanger.
Under the condition that adopts above-mentioned technical scheme, the utility model discloses a heat pump system includes first refrigerant circulation circuit and second refrigerant circulation circuit, be provided with heat exchanger and second heat exchanger in the middle of first compressor, first heat exchanger, first throttle component, first middle heat exchanger, second on the first refrigerant circulation circuit, first middle heat exchanger with the second heat exchanger is the series connection setting, just first middle heat exchanger with the second heat exchanger set to establish ties after with the heat exchanger is parallelly connected to be set up in the middle of the second, so that first middle heat exchanger with the second heat exchanger can with heat exchanger inserts selectively in the middle of the second first refrigerant circulation circuit, set gradually the second compressor on the second refrigerant circulation circuit first middle heat exchanger, second throttle component with the heat exchanger in the middle of the second. Based on this, the utility model discloses an adopt and establish ties the back with first middle heat exchanger and second heat exchanger and then with the parallelly connected mode that sets up of second middle heat exchanger, can utilize the running state of second heat exchanger selectivity adjustment first refrigerant circulation circuit to the at utmost, effectively improve heat pump system's operation efficiency.
Furthermore, the utility model discloses an among the preferred technical scheme, the setting of first three-way valve and second three-way valve can further be convenient for the adjustment of the running state of first refrigerant circulation circuit, and then effectively improve heat pump system's operation efficiency.
Furthermore, the utility model discloses an among the preferred technical scheme, the setting of bypass branch road can make in the first refrigerant circulation circuit of second heat exchanger selective access, promptly, the utility model discloses a heat pump system can be according to actual conditions selective operation second heat exchanger, and then effectively reduce the operation energy consumption.
Furthermore, the utility model discloses an among the preferred technical scheme, based on the structure of second heat exchanger, the refrigerant in the first refrigerant circulation circuit can be further evaporated through the heat of heat pipe transmission in the second heat exchanger, and then further effectively improves heat pump system's operation efficiency.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
fig. 1 is a schematic view of the overall structure of the heat pump system of the present invention;
fig. 2 is a schematic structural diagram of a second heat exchanger of the present invention;
reference numerals:
1. a first refrigerant circulation circuit; 11. a first compressor; 12. a first heat exchanger; 13. a first throttle member; 14. a first intermediate heat exchanger; 15. a second intermediate heat exchanger; 16. a second heat exchanger; 161. a housing; 1611. a first cavity; 1612. a second cavity; 162. a heat pipe; 163. a first heat exchange medium pipe; 164. a second heat exchange medium conduit; 165. a thermally insulating barrier; 17. a first three-way valve; 18. a second three-way valve;
2. a second refrigerant circulation circuit; 21. a second compressor; 22. a second throttling member;
3. a bypass branch; 31. a one-way valve;
4. and a heat exchange water path.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications. For example, the heat pump system of the present invention may be a household heat pump system, or an industrial heat pump system, which is not limited to the above embodiments, and those skilled in the art can set the application of the heat pump system according to the actual use requirement. Such changes in the application do not depart from the basic principle of the present invention, and belong to the protection scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "in", "inner", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the structure must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection or a detachable connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring first to fig. 1, fig. 1 is a schematic diagram of the overall structure of the heat pump system of the present invention. As shown in fig. 1, the utility model discloses a heat pump system includes first refrigerant circulation circuit 1 and second refrigerant circulation circuit 2, be provided with first compressor 11 on the first refrigerant circulation circuit 1, first heat exchanger 12, first throttling component 13, first intermediate heat exchanger 14, heat exchanger 15 and second heat exchanger 16 in the middle of the second, wherein, first intermediate heat exchanger 14 is the series connection setting with second heat exchanger 16, and first intermediate heat exchanger 14 is parallelly connected the setting with second intermediate heat exchanger 15 after setting to the series connection with second heat exchanger 16, so that first intermediate heat exchanger 14 and second heat exchanger 16 can insert first refrigerant circulation circuit 1 with second intermediate heat exchanger 15 selectivity, second compressor 21 has set gradually on the second refrigerant circulation circuit 2, first intermediate heat exchanger 14, second throttling component 22 and second intermediate heat exchanger 15.
Based on the structure setting, the utility model discloses a through adopt after establishing ties first intermediate heat exchanger 14 and second heat exchanger 16 again with the parallelly connected mode that sets up of second intermediate heat exchanger 15, can utilize second heat exchanger 16 selectively to adjust the running state of first refrigerant circulation circuit 1 by the at utmost, effectively improve heat pump system's operation efficiency.
It should be noted that, the present invention does not limit the specific types of the refrigerants flowing in the first refrigerant circulation circuit 1 and the second refrigerant circulation circuit 2, and those skilled in the art can set the types according to actual situations. In a specific embodiment, the refrigerant in the first refrigerant circuit 1 is the refrigerant R134a, and the refrigerant in the second refrigerant circuit 2 is the refrigerant R410A. In addition, it should be noted that the present invention does not limit the specific structures of the first intermediate heat exchanger 14, the second intermediate heat exchanger 15 and the second heat exchanger 16, and the heat exchangers may be shell-and-tube heat exchangers or plate heat exchangers, and those skilled in the art can set the heat exchangers according to actual situations. In the present embodiment, the first intermediate heat exchanger 14 and the second intermediate heat exchanger 15 are preferably plate heat exchangers, so as to effectively improve the heat exchange efficiency of the heat pump system.
Specifically, the first intermediate heat exchanger 14 and the second intermediate heat exchanger 15 include a first heat exchange channel and a second heat exchange channel, the refrigerant in the first refrigerant circulation loop 1 flows through the first heat exchange channel, the refrigerant in the second refrigerant circulation loop 2 flows through the second heat exchange channel, and the first heat exchange channel and the second heat exchange channel are arranged in a staggered manner, so as to achieve the purpose of heat exchange between the refrigerant in the first refrigerant circulation loop 1 and the refrigerant in the second refrigerant circulation loop 2.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a second heat exchanger according to the present invention. As shown in fig. 2, in the preferred embodiment, the second heat exchanger 16 includes a housing 161 and a heat pipe 162, wherein a first cavity 1611 and a second cavity 1612 are formed in the housing 161 separately, and the heat pipe 162 is inserted into the first cavity 1611 and the second cavity 1612; further, a first medium flow port communicated with the first heat exchange medium pipeline 163 and a second medium flow port communicated with the second heat exchange medium pipeline 164 are formed in the casing 161, a first heat exchange medium flows through the first heat exchange medium pipeline 163, a second heat exchange medium flows through the second heat exchange medium pipeline 164, the first medium flow port is communicated with the first cavity 1611, and the second medium flow port is communicated with the second cavity 1612.
In this embodiment, the heat pipe 162 includes an evaporation section and a condensation section, wherein the condensation section is inside the first cavity 1611, the evaporation section is inside the second cavity 1612, the first refrigerant circulation loop 1 is the first heat exchange medium pipeline 163, that is, the refrigerant in the first refrigerant circulation loop 1 is the first heat exchange medium, and the second heat exchange medium can further evaporate the refrigerant in the first refrigerant circulation loop 1, so as to effectively improve the operation energy efficiency of the heat pump system. Of course, the condensing section may also be located in the second cavity 1612, and correspondingly, the evaporating section is located in the first cavity 1611, so that the first refrigerant circulation loop 1 is the second heat exchange medium pipeline 164, and the refrigerant in the first refrigerant circulation loop 1 is the second heat exchange medium, and those skilled in the art can set the specific structural setting manner by themselves. In addition, it should be noted that the present invention is not limited to the specific type of the second heat exchange medium, as long as the temperature of the second heat exchange medium in the second heat exchanger 16 is higher than the temperature of the refrigerant in the first refrigerant circulation loop 1, so that the refrigerant in the first refrigerant circulation loop 1 is further evaporated in the second heat exchanger 16, and those skilled in the art can set the specific type of the second heat exchange medium by themselves.
In addition, it should be noted that, the present invention does not limit the specific type and structure of the heat pipe 162, and the heat pipe 162 may be a separate heat pipe, a capillary pump loop heat pipe, or a micro heat pipe, which are not limited and can be set by a person skilled in the art according to actual situations.
Further, the second heat exchanger 16 further comprises a heat insulation partition 165, and the heat insulation partition 165 is disposed between the first cavity 1611 and the second cavity 1612; the heat insulating partition 165 is provided with through holes through which the heat pipes 162 are inserted into the first and second cavities 1611 and 1612. Of course, the present invention does not limit the specific structure of the heat insulation partition 165, so long as the heat insulation partition 165 has the function of heat insulation, and the skilled person can set the function by himself.
In addition, in this embodiment, a first three-way valve 17 is further disposed on the first refrigerant circulation circuit 1, the first three-way valve 17 includes an inlet and two outlets, the inlet of the first three-way valve 17 is connected to the main path of the first refrigerant circulation circuit 1, a first outlet of the first three-way valve 17 is connected to the first intermediate heat exchanger 14, and a second outlet of the first three-way valve 17 is connected to the second intermediate heat exchanger 15. Further, a second three-way valve 18 is further disposed on the first refrigerant circulation loop 1, the second three-way valve 18 includes two inlets and one outlet, a first inlet of the second three-way valve 18 is connected to the second heat exchanger 16, a second inlet of the second three-way valve 18 is connected to the second intermediate heat exchanger 15, and an outlet of the second three-way valve 18 is connected to the main path of the first refrigerant circulation loop 1.
The first three-way valve 17 and the second three-way valve 18 are configured to enable the first intermediate heat exchanger 14, the second heat exchanger 16, and the second intermediate heat exchanger 15 to be selectively connected to the first refrigerant circulation circuit 1 by controlling their communication states. Specifically, when the inlet of the first three-way valve 17 is communicated with the first outlet and the first inlet of the second three-way valve 18 is communicated with the outlet, the first intermediate heat exchanger 14 and the second heat exchanger 16 are connected to the first refrigerant circulation loop 1; when the inlet and the second outlet of the first three-way valve 17 are communicated and the second inlet and the outlet of the second three-way valve 18 are communicated, the second intermediate heat exchanger 15 is connected to the first refrigerant circulation circuit 1. It should be noted that the present invention does not limit the specific structure and the specific type of the first three-way valve 17 and the second three-way valve 18, and those skilled in the art can set the specific structure and the specific type according to actual situations.
Further, the heat pump system further comprises a bypass branch 3, the bypass branch 3 is connected with the first refrigerant circulation loop 1, a first end of the bypass branch 3 is connected between the first intermediate heat exchanger 14 and the second heat exchanger 16, and a second end of the bypass branch 3 is connected to an air inlet of the first compressor 11; specifically, the second end of the bypass branch 3 is connected between the air inlet of the first compressor 11 and the outlet of the second three-way valve 18. Preferably, a bypass valve is arranged on the bypass branch 3, and the bypass valve can control the on-off state of the bypass branch 3.
It should be noted that, the present invention does not set any limit to the specific type of the bypass valve, in this embodiment, the bypass valve is preferably a check valve 31, and the check valve 31 is set to only allow the refrigerant in the first refrigerant circulation loop 1 to flow from the first intermediate heat exchanger 14 to the air inlet of the first compressor 11, so as to effectively avoid the problem of refrigerant backflow.
Further preferably, the heat pump system further comprises a heat exchange water path 4, and a part of the heat exchange water path 4 is arranged in the first heat exchanger 12, so that water circulating in the heat exchange water path 4 can exchange heat with a refrigerant circulating in the first refrigerant circulation loop 1 through the first heat exchanger 12, and the requirement of a user for preparing hot water is further effectively met.
It should be noted that, the present invention does not limit the specific usage of the heat pump system, and those skilled in the art can set the usage according to actual situations.
So far, the technical solution of the present invention has been described with reference to the alternative embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions can be made on the related technical features by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions will fall into the protection scope of the invention.
Claims (10)
1. A heat pump system is characterized in that the heat pump system comprises a first refrigerant circulation loop and a second refrigerant circulation loop,
the first refrigerant circulating loop is provided with a first compressor, a first heat exchanger, a first throttling component, a first intermediate heat exchanger, a second intermediate heat exchanger and a second heat exchanger,
the first intermediate heat exchanger and the second heat exchanger are arranged in series, and the first intermediate heat exchanger and the second heat exchanger are arranged in parallel after being arranged in series, so that the first intermediate heat exchanger, the second heat exchanger and the second intermediate heat exchanger can be selectively connected into the first refrigerant circulation loop,
and the second refrigerant circulating loop is sequentially provided with a second compressor, the first intermediate heat exchanger, a second throttling component and the second intermediate heat exchanger.
2. The heat pump system according to claim 1, wherein a first three-way valve is further provided on the first refrigerant circulation circuit,
the first three-way valve comprises an inlet and two outlets, the inlet of the first three-way valve is connected with the main path of the first refrigerant circulation loop, the first outlet of the first three-way valve is connected with the first intermediate heat exchanger, and the second outlet of the first three-way valve is connected with the second intermediate heat exchanger.
3. The heat pump system according to claim 2, wherein a second three-way valve is further provided in said first refrigerant circulation circuit,
the second three-way valve comprises two inlets and an outlet, a first inlet of the second three-way valve is connected with the second heat exchanger, a second inlet of the second three-way valve is connected with the second intermediate heat exchanger, and an outlet of the second three-way valve is connected with the main path of the first refrigerant circulation loop.
4. The heat pump system of claim 1, further comprising a bypass branch,
the bypass branch is connected with the first refrigerant circulation loop, a first end of the bypass branch is connected between the first intermediate heat exchanger and the second heat exchanger, and a second end of the bypass branch is connected to an air inlet of the first compressor.
5. The heat pump system of claim 4, wherein a bypass valve is disposed on the bypass branch.
6. The heat pump system of claim 5, wherein the bypass valve is a check valve configured to allow only refrigerant in the first refrigerant circulation loop to flow from the first intermediate heat exchanger to the inlet of the first compressor.
7. The heat pump system of any one of claims 1 to 6, further comprising a heat exchange water circuit,
and a part of the heat exchange water path is arranged in the first heat exchanger, so that the water circulating in the heat exchange water path can exchange heat with the refrigerant circulating in the first refrigerant circulation loop through the first heat exchanger.
8. The heat pump system of any one of claims 1 to 6, wherein the second heat exchanger comprises a housing and a heat pipe, wherein a first cavity and a second cavity are formed separately in the housing, and the heat pipe is inserted into the first cavity and the second cavity,
a first heat exchange medium flows through the first cavity, a second heat exchange medium flows through the second cavity, and the first heat exchange medium and the second heat exchange medium can exchange heat through the heat pipe.
9. The heat pump system of claim 8, wherein the second heat exchanger further comprises a thermally insulating barrier disposed between the first cavity and the second cavity.
10. The heat pump system of any one of claims 1 to 6, wherein the first intermediate heat exchanger is a plate heat exchanger; and/or
The second intermediate heat exchanger is a plate heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221633345.7U CN218154902U (en) | 2022-06-27 | 2022-06-27 | Heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221633345.7U CN218154902U (en) | 2022-06-27 | 2022-06-27 | Heat pump system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218154902U true CN218154902U (en) | 2022-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221633345.7U Active CN218154902U (en) | 2022-06-27 | 2022-06-27 | Heat pump system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218154902U (en) |
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2022
- 2022-06-27 CN CN202221633345.7U patent/CN218154902U/en active Active
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