CN219243968U - CO2 heat pump heat exchanger with secondary cooling - Google Patents
CO2 heat pump heat exchanger with secondary cooling Download PDFInfo
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- CN219243968U CN219243968U CN202320182661.5U CN202320182661U CN219243968U CN 219243968 U CN219243968 U CN 219243968U CN 202320182661 U CN202320182661 U CN 202320182661U CN 219243968 U CN219243968 U CN 219243968U
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- evaporator
- secondary cooling
- heat pump
- pipeline
- heat
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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
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Abstract
The utility model relates to the technical field of heat exchange of carbon dioxide heat pumps, in particular to a CO2 heat pump heat exchanger with secondary cooling, which comprises an evaporator, wherein two pipeline fixing plates are arranged on the surface of the evaporator through screws, the two pipeline fixing plates are symmetrically arranged, secondary cooling pipelines which are continuously and flexibly arranged are arranged between the side surfaces of the two pipeline fixing plates in a penetrating way, two ends of each secondary cooling pipeline are respectively and fixedly connected with an inlet pipe of the secondary cooler and an outlet pipe of the secondary cooler, and a cooling fan is arranged on the other surface of the evaporator through screws. According to the scheme, the cooling fans and the secondary cooling pipelines are respectively arranged on the two surfaces of the evaporator of the existing CO2 heat pump, frosting of the evaporator can be effectively relieved, or defrosting times of a unit are reduced, heat in the evaporator is discharged by the cooling fans, the exhaust temperature is reduced, the running load of the unit is further reduced, and the service life of the unit is prolonged.
Description
Technical Field
The utility model relates to the technical field of heat exchange of carbon dioxide heat pumps, in particular to a CO2 heat pump heat exchanger with secondary cooling.
Background
When the carbon dioxide heat pump works, the outlet temperature of the air cooler is higher when the outlet temperature of the air cooler is higher (the outlet temperature of the air cooler is 5-10 ℃ higher than the outlet temperature of the water), the COP is lower, the compression ratio is increased, the exhaust pressure of the compressor and the exhaust temperature are increased after the outlet temperature of the air cooler is too high, and the service life of a unit is prolonged due to the fact that the load on the system is increased;
the excessive temperature of the outlet of the air cooler indicates that the air cooler cannot completely exchange heat of heat energy absorbed by CO2/R744 from air or water (an evaporator for short), and then the heat load of the compressor and the air cooler is increased;
in summary, in the prior art, the CO2 heat pump heats in winter, because of too high return water temperature, the outlet temperature of the air cooler is too high, the COP is low, the system operating pressure is high, the exhaust temperature is high, the service life is short, and the like.
Disclosure of Invention
The utility model aims to solve the defects in the prior art, and provides a CO2 heat pump heat exchanger with secondary cooling.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a take secondary cooling's CO2 heat pump heat exchanger, includes the evaporimeter, two pipeline fixed plates are installed through the screw on the surface of evaporimeter, two pipeline fixed plate symmetrical arrangement, two run through between the side of pipeline fixed plate and install the secondary cooling pipeline of continuous bending arrangement, secondary cooling pipeline's both ends are fastening connection respectively has secondary cooler entry pipe and secondary cooler outlet pipe, radiator fan is installed through the screw to another surface of evaporimeter.
Preferably, the surface of the evaporator is respectively provided with an evaporator outlet pipe and an evaporator inlet pipe in a penetrating way.
Preferably, the evaporator inlet pipe is connected with the secondary cooler outlet pipe through an electronic expansion valve.
Compared with the prior art, the utility model has the following beneficial effects:
according to the scheme, the cooling fan and the secondary cooling pipeline are respectively arranged on the two surfaces of the evaporator of the existing CO2 heat pump, high-temperature gas generated by the CO2 heat pump firstly enters the secondary cooling pipeline, the high-temperature gas in the secondary cooling pipeline is absorbed by the evaporator after being discharged, the dew point temperature of the evaporator is increased, frosting of the evaporator can be effectively relieved or the defrosting times of a unit are reduced after the dew point temperature is increased when the evaporator works in winter, heat in the evaporator is discharged by the cooling fan, the exhaust temperature is reduced, the running load of the unit is further reduced, and the service life of the unit is prolonged.
Drawings
FIG. 1 is a front view of a CO2 heat pump heat exchanger with secondary cooling of the present utility model;
FIG. 2 is a bottom view of the CO2 heat pump heat exchanger with secondary cooling of the present utility model;
FIG. 3 is a side view of the CO2 heat pump heat exchanger with secondary cooling of the present utility model;
fig. 4 is an isometric view of the evaporator and secondary cooling piping connection of the CO2 heat pump heat exchanger with secondary cooling of the present utility model.
In the figure: an evaporator outlet pipe 1, a secondary cooler inlet pipe 2, an evaporator inlet pipe 3, a secondary cooler outlet pipe 4, a secondary cooling pipeline 5, an evaporator 6, a cooling fan 7 and a pipeline fixing plate 8.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.
The CO2 heat pump heat exchanger with secondary cooling as shown in figures 1-4 comprises an evaporator 6, wherein two pipeline fixing plates 8 are arranged on the surface of the evaporator 6 through screws, the two pipeline fixing plates 8 are symmetrically arranged, secondary cooling pipelines 5 which are continuously and flexibly arranged are arranged between the side surfaces of the two pipeline fixing plates 8 in a penetrating way, an inlet pipe 2 of the secondary cooler and an outlet pipe 4 of the secondary cooler are respectively and fixedly connected with two ends of the secondary cooling pipeline 5, so that the dew point temperature of the evaporator is increased, and the frosting of the evaporator can be effectively relieved or the frosting times of a unit can be reduced after the dew point temperature of the evaporator is increased in winter; according to the heat exchange characteristic of the CO2/R744 refrigerating system, the COP can be effectively improved by about 0.2 when the evaporating temperature is increased by 2 ℃.
The other surface of the evaporator 6 is provided with a cooling fan 7 by screws; the surface of the evaporator 6 is respectively provided with an evaporator outlet pipe 1 and an evaporator inlet pipe 3 in a penetrating way; the evaporator inlet pipe 3 is connected with the secondary cooler outlet pipe 4 through an electronic expansion valve; the intermediate temperature of the secondary cooling pipeline 5 and the cold air in winter can effectively reduce the outlet temperature of the outlet pipe 4 of the secondary cooler in the drawing, after the outlet temperature/pre-valve temperature of the air cooler of the outlet pipe 4 of the secondary cooler is reduced, the whole COP of the unit is effectively improved, and according to the heat exchange characteristic of the CO2/R744 refrigerating system, the COP can be improved by 0.11 when the outlet temperature of the air cooler is reduced by 2 ℃.
Working principle: the medium-temperature high-pressure CO2/R744 gas after heat exchange of the CO2 heat pump main gas cooler enters a secondary cooling pipeline 5 from an inlet pipe 2 of the secondary cooler to carry out secondary heat exchange, and the medium-temperature gas after heat exchange of the secondary cooling pipeline 5 absorbs heat through an evaporator 6 and is discharged through a hot air fan 7; the medium-temperature high-pressure CO2/R744 gas enters the secondary cooling pipeline 5 for secondary heat exchange, and the low-temperature low-pressure CO2/R744 liquid which is discharged from the outlet pipe 4 of the secondary cooler and is subjected to interception and depressurization by the electronic expansion valve enters the inlet pipe 3 of the evaporator for heat exchange, and then is discharged from the outlet pipe 1 of the evaporator for flowing into the compressor, so that the heat exchange is completed.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (3)
1. The utility model provides a take secondary cooling's CO2 heat pump heat exchanger, includes evaporimeter (6), its characterized in that, two pipeline fixed plates (8) are installed through the screw on the surface of evaporimeter (6), two pipeline fixed plate (8) symmetrical arrangement, two run through between the side of pipeline fixed plate (8) and install secondary cooling pipeline (5) of continuous bending range, the both ends of secondary cooling pipeline (5) are fastening connection respectively have secondary cooler entry pipe (2) and secondary cooler outlet pipe (4), radiator fan (7) are installed through the screw to the another surface of evaporimeter (6).
2. The CO2 heat pump heat exchanger with secondary cooling according to claim 1, wherein the evaporator (6) surface is provided with an evaporator outlet pipe (1) and an evaporator inlet pipe (3) respectively penetrating.
3. The CO2 heat pump heat exchanger with secondary cooling according to claim 2, characterized in that the evaporator inlet pipe (3) is connected with the secondary cooler outlet pipe (4) through an electronic expansion valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320182661.5U CN219243968U (en) | 2023-02-10 | 2023-02-10 | CO2 heat pump heat exchanger with secondary cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320182661.5U CN219243968U (en) | 2023-02-10 | 2023-02-10 | CO2 heat pump heat exchanger with secondary cooling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219243968U true CN219243968U (en) | 2023-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320182661.5U Active CN219243968U (en) | 2023-02-10 | 2023-02-10 | CO2 heat pump heat exchanger with secondary cooling |
Country Status (1)
| Country | Link |
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| CN (1) | CN219243968U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117367055A (en) * | 2023-10-08 | 2024-01-09 | 佛山凌盈达节能科技有限公司 | CO (carbon monoxide) 2 Heat pump drying device |
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2023
- 2023-02-10 CN CN202320182661.5U patent/CN219243968U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117367055A (en) * | 2023-10-08 | 2024-01-09 | 佛山凌盈达节能科技有限公司 | CO (carbon monoxide) 2 Heat pump drying device |
| CN117367055B (en) * | 2023-10-08 | 2024-06-07 | 佛山凌盈达节能科技有限公司 | CO (carbon monoxide)2Heat pump drying device |
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