CN117677149A - Refrigerating and heat exchanging integrated unit - Google Patents
Refrigerating and heat exchanging integrated unit Download PDFInfo
- Publication number
- CN117677149A CN117677149A CN202311559739.1A CN202311559739A CN117677149A CN 117677149 A CN117677149 A CN 117677149A CN 202311559739 A CN202311559739 A CN 202311559739A CN 117677149 A CN117677149 A CN 117677149A
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- Prior art keywords
- unit
- refrigeration
- pipeline
- inlet
- circulation
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 81
- 238000005057 refrigeration Methods 0.000 claims abstract description 49
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 239000003507 refrigerant Substances 0.000 claims abstract description 29
- 238000001816 cooling Methods 0.000 claims abstract description 20
- 238000001035 drying Methods 0.000 claims description 10
- 238000013421 nuclear magnetic resonance imaging Methods 0.000 claims description 6
- 238000009833 condensation Methods 0.000 abstract description 5
- 230000005494 condensation Effects 0.000 abstract description 5
- 238000002595 magnetic resonance imaging Methods 0.000 description 19
- 230000002528 anti-freeze Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 4
- 238000012806 monitoring device Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
The application provides a refrigeration heat transfer unit for nuclear magnetic equipment cooling, its characterized in that includes: a water circulation unit for storing and driving the circulation liquid; the distributor unit comprises a plurality of circulation loops, each circulation loop extends into each part in the nuclear magnetic equipment, the inlets of the plurality of circulation loops are connected in parallel to the outlet of the water circulation unit, and the outlets of the plurality of circulation loops are connected in parallel to the inlet of the water circulation unit, so that the distributor unit and the water circulation unit form a closed loop; the system comprises a plurality of refrigeration units, a plurality of heat exchangers and a plurality of heat exchangers, wherein each refrigeration unit comprises a heat exchanger, and a pipeline of the water circulation unit sequentially passes through the heat exchangers and is used for realizing heat exchange between circulating liquid in the pipeline of the water circulation unit and refrigerant in the pipeline of the refrigeration unit at the heat exchangers; each refrigeration unit pipeline is connected with a condensation unit pipeline to form a closed pipeline. The refrigerating and heat exchanging integrated unit provided by the application has the functions of a water chilling unit and a heat exchanging unit, and can be used for cooling nuclear magnetic equipment more efficiently.
Description
Technical Field
The application relates to the field of heat dissipation and cooling devices, in particular to a refrigerating and heat exchanging integrated unit.
Background
The nuclear magnetic resonance imaging (MRI for short, magnetic Resonance Imaging) apparatus releases a lot of heat during operation, and needs to be subjected to heat dissipation and cooling treatment. In the prior art, the primary water chiller and the secondary heat exchanger are usually required to be assisted in cooling. The primary water chilling unit mainly utilizes compression refrigeration cycle to absorb heat in the antifreeze fluid and discharges the heat into the air through the condenser and the fan, so that the antifreeze fluid is cooled. The antifreeze fluid is conveyed into a plate heat exchanger of a secondary heat exchanger unit through a water pump of the primary water chiller, the secondary heat exchanger unit uses low-temperature antifreeze fluid provided by the primary water chiller as a cold source to cool deionized water in the plate heat exchanger, and the deionized water is conveyed into MRI equipment after being cooled to achieve the purpose of cooling.
In the prior art, the heat exchange unit customized by the similar products for the MRI equipment exchanges heat with the outdoor water chiller, and the heat exchange unit mainly utilizes the cold water provided by the outdoor water chiller to exchange heat with the circulating water loop of the MRI equipment and supplies the heat to the MRI equipment. However, at present, two devices of a water chilling unit and a custom heat exchange unit are required to be configured at the same time for MRI equipment, wherein the custom heat exchange unit is arranged between MRI equipment, and the water chilling unit is arranged outside the room, and the two devices are connected through a pipeline. The cost is high, the occupied space is large, the installation is complex, and the risk of water pipe leakage is large, so that the operation of a hospital can be influenced. And the refrigerant in the outdoor water chilling unit exchanges heat with the antifreeze to cool, and the antifreeze cools the circulating water in the heat exchange unit, so that the cooling principle of secondary indirect heat exchange is used, and the refrigeration energy efficiency ratio in the prior art is lower.
Disclosure of Invention
From this can be discerned, this application provides a refrigeration heat transfer unit for nuclear magnetic resonance imaging equipment cooling, its specific structure includes: a water circulation unit for storing and driving the circulation liquid; the distributor unit comprises a plurality of circulation loops, each circulation loop extends into each part in the nuclear magnetic resonance imaging equipment, the inlets of the plurality of circulation loops are connected in parallel to the outlet of the water circulation unit, and the outlets of the plurality of circulation loops are connected in parallel to the inlet of the water circulation unit, so that the distributor unit and the water circulation unit form a closed loop; the system comprises a plurality of refrigeration units, a plurality of heat exchangers and a plurality of heat exchangers, wherein each refrigeration unit comprises a heat exchanger, and a pipeline of the water circulation unit sequentially passes through the plurality of heat exchangers and is used for realizing heat exchange between circulating liquid in the pipeline of the water circulation unit and refrigerant in the pipeline of the refrigeration unit at the heat exchangers; each refrigeration unit pipeline is connected with a condensation unit pipeline to form a closed pipeline.
By adopting the specific structure, the water circulation unit and the distributor unit are communicated through pipelines to form cooling waterways distributed in each part of the MRI equipment, so that the heat exchange unit is formed. The refrigerating unit and the condensing unit form a water chilling unit. The two satisfy the functions of the heat exchanger unit and the water chiller, and realize the cooling of circulating liquid through the heat exchanger arranged in the refrigeration unit, thereby taking away the heat emitted by the MRI equipment. Because the heat exchanger of the refrigerating and heat exchanging integrated unit provided by the application is used for directly exchanging heat between the refrigerant and the circulating water, secondary indirect heat exchange is avoided, and therefore the refrigerating energy efficiency ratio is improved.
As one possible implementation manner, the method further includes: a first housing in which the water circulation unit, the dispenser unit, and the plurality of refrigeration units are disposed; and a second housing in which a plurality of the condensing units are disposed.
As one possible implementation, the first housing is provided indoors/in the mri apparatus, and the second housing is provided outdoors.
With the above possible implementation manner, the first housing is provided separately from the second housing, and the first housing may be a housing of the MRI apparatus or may be a housing provided in the MRI apparatus. The second housing is arranged outside the MRI apparatus, or can be a position which is outside and is favorable for cooling and ventilation.
As one possible implementation, the water circulation unit includes: the inlet of the water tank is connected with the outlet pipelines of the plurality of circulating loops, and the water tank is used for storing circulating liquid; and the inlet of the water pump is connected with the outlet pipeline of the water tank, and the outlets of the water pump are connected with the inlet pipelines of the circulating loops.
As one possible implementation, the condensing unit includes: the outlet of the air-cooled condenser is connected with the inlet pipeline of the heat exchanger; the fan is arranged on the air-cooled condenser and used for cooling the air-cooled condenser.
As one possible implementation, the refrigeration unit further includes: the inlet of the compressor is connected with the outlet pipeline of the heat exchanger, and the outlet of the compressor is connected with the inlet pipeline of the air-cooled condenser; the outlet of the air-cooled condenser is connected with an inlet pipeline of the drying filter; and the outlet of the dry filter is connected with the inlet pipeline of the expansion valve, and the outlet of the expansion valve is connected with the inlet pipeline of the heat exchanger.
By adopting the possible implementation manner, the high-temperature low-pressure gaseous refrigerant after heat exchange is compressed into the high-temperature high-pressure gaseous refrigerant by the compressor; then, the high-temperature high-pressure gaseous refrigerant enters an air-cooled condenser to be condensed, and is exothermically liquefied into liquid refrigerant; then, the refrigerant enters a drying filter for drying and filtering; next, the refrigerant enters an expansion valve and is made into a refrigerant liquid of low temperature and low pressure; finally, the refrigerant liquid enters the heat exchanger and exchanges heat with the circulating liquid so as to achieve the cooling effect.
As a possible implementation manner, a pressure sensor is arranged on a connecting pipeline between the air-cooled condenser and the drying filter; a temperature sensor is arranged on a connecting pipeline between the expansion valve and the evaporator; and a liquid viewing mirror is arranged on a connecting pipeline between the drying filter and the expansion valve.
As one possible implementation, the dispenser unit further comprises: a flow meter disposed at an inlet of the dispenser unit for metering a flow rate of the dispenser unit; a pressure sensor disposed at an inlet of the dispenser unit for measuring a pressure in the pipeline; a temperature sensor provided at an inlet of the dispenser unit for measuring a temperature in the pipe; and the control valves are respectively arranged at the outlets of the circulating loops.
As a possible implementation manner, the water circulation device further comprises an electric control unit, wherein the electric control unit is arranged in the first shell and is electrically connected with the water circulation unit, the distributor unit, the refrigeration units and the condensation units respectively.
As one possible implementation, the heat exchanger is an evaporator.
Drawings
The individual technical features of the present application and their relationships are further described below with reference to the accompanying drawings. The drawings are exemplary, some technical features are not shown in actual proportion, and some drawings may omit technical features that are conventional in the art to which the present application pertains and are not essential to understanding and realizing the present application, or additionally show technical features that are not essential to understanding and realizing the present application, that is, combinations of the technical features shown in the drawings are not limiting the present application. In addition, throughout this application, like reference numerals refer to like elements. The specific drawings are as follows:
fig. 1 is a schematic structural diagram of a refrigeration and heat exchange integrated unit provided in an embodiment of the present application.
Reference numerals illustrate: 10-a first housing; 20-a second housing; a 100-refrigeration unit; 110-a heat exchanger; 120-compressor; 130-drying the filter; 140-a liquid-viewing mirror; 150-expansion valve; 200-a water circulation unit; 210-a water tank; 220-a water pump; 300-dispenser unit; 310-a circulation loop; 320-controlling a valve; 330-a flow meter; 400-condensing unit; 410-an air-cooled condenser; 420-a fan; 500-an electronic control unit; 600-pipeline.
Detailed Description
Hereinafter, specific embodiments of the present application will be described in detail with reference to the accompanying drawings.
The application provides a refrigeration heat transfer integrated unit, mainly used carries out cooling for MRI equipment. Which includes a water circulation unit 200, and a dispenser unit 300 circularly connected with the water circulation unit 200 through a pipe 600; also comprises a plurality of refrigeration units 100 and a condensation unit 400 which is connected with the pipelines of the refrigeration units 100 in a circulating way; and further comprises an electronic control unit 500 for controlling the above units.
The water circulation unit 200 is used for storing and driving circulation liquid, and specifically includes a water tank 210 and a water pump 220, the water tank 210 is used for storing circulation liquid, the water pump 220 is connected with the water tank 210 through a pipeline, and the water pump 220 is used for pumping the circulation liquid from the water tank 210 into the dispenser unit 300 and recycling the circulation liquid from the dispenser unit 300 back into the water tank 210.
The distributor unit 300 includes a plurality of circulation loops connected in parallel, and each circulation loop extends into each part of the MRI apparatus such as a gradient amplifier, a gradient coil, a helium press, and the like, so as to take heat out of each part of the MRI apparatus. The circulation loops are formed by pipes 600, and a control valve 320 is arranged at the pipe outlet of each circulation loop. The inlet of the distributor unit 300 is divided into inlets of a plurality of circulation loops connected in parallel; the outlets of the plurality of circulation loops converge into the outlet of the distributor unit 300.
In addition, a monitoring device is also provided in the dispenser unit 300. The inlet of the dispenser unit 300 is provided with a flow meter 330, a pressure sensor, and a temperature sensor, respectively, for monitoring the state of the circulating liquid entering the dispenser unit 300, including a flow state, a pressure state, and a temperature state, to ensure the dispenser unit 300 operates normally.
In the present embodiment, a flow meter 330, a pressure sensor, and a temperature sensor are provided at the inlet of the dispenser unit 300. Additionally, in other embodiments, the flow meter 330, pressure sensor, and temperature sensor may be located elsewhere, for example, at the outlet of the dispenser unit 300, or separately in each circulation loop.
Wherein the refrigeration unit 100 includes heat exchangers 110, and the pipeline 600 of the water circulation unit 200 sequentially passes through the plurality of heat exchangers 110, for achieving heat exchange between the circulation liquid in the pipeline 600 of the water circulation unit 200 and the refrigerant in the pipeline 600 of the refrigeration unit 100 at the heat exchangers 110. The refrigeration unit 100 further includes a compressor 120, an inlet of the compressor 120 is connected to an outlet pipe of the heat exchanger 110, and an outlet of the compressor 120 is connected to an inlet pipe of the air-cooled condenser 410; the outlet of the air-cooled condenser 410 of the drier-filter 130 is connected with the inlet pipeline of the drier-filter 130; the outlet of the expansion valve 150 and the inlet line of the expansion valve 150 are connected, and the outlet of the expansion valve 150 and the inlet line of the heat exchanger 110 are connected.
In addition, a monitoring device is also provided in the refrigeration unit 100. A pressure sensor is arranged on a connecting pipeline 600 between the air-cooled condenser 410 and the dry filter 130 and is used for monitoring the real-time pressure of the refrigerant in the pipeline 600; a temperature sensor is provided on the connection line 600 between the expansion valve 150 and the heat exchanger 110 for monitoring the real-time temperature of the refrigerant in the line 600; a liquid mirror 140, which is a transparent tube-like device for observing the state of the refrigerant in the pipe, is provided on the connection line 600 between the dry filter 130 and the expansion valve 150. The normal operation of the refrigerating unit 100 can be ensured by the above-described monitoring apparatus.
In the present embodiment, the arrangement of the monitoring devices in the refrigeration unit 100 is as described above. In addition, in other embodiments, the monitoring devices in the refrigeration unit 100 may also be located in other locations.
The condensing unit 400 includes an air-cooled condenser 410, where the air-cooled condenser 410 is on a circulation line 600 between an outlet of the heat exchanger 110 and an inlet of the heat exchanger 110. Specifically, air-cooled condenser 410 is located in connection 600 between compressor 120 and dry filter 130. The air-cooled condenser 410 is provided with a fan 420 for providing more air flow for the air-cooled condenser 410, so as to accelerate the exhaust efficiency and facilitate the heat dissipation and cooling of the air-cooled condenser 410.
In this embodiment, the fan 420 provided on the air-cooled condenser 410 is one. In addition, in other embodiments, the fans 420 disposed on the air-cooled condenser 410 may be multiple, for example, two or three.
Wherein the electronic control unit 500 is electrically connected with the water circulation unit 200, the dispenser unit 300, the refrigeration unit 100, and the condensation unit 400, respectively.
In this embodiment, the electronic control unit 500 is composed of a controller and a power supply. In addition, in other embodiments, the electronic control unit 500 may be a programmable power supply or the like that integrates control functions.
The refrigeration and heat exchange integrated unit provided in the embodiment of the application further includes a first casing 10 and a second casing 20. A plurality of refrigeration units 100, dispenser units 300, water circulation units 200, and electronic control units 500 are disposed in the first housing 10. A plurality of condensing units 400 are disposed in the second housing 20. The first housing 10 is provided in the MRI apparatus, or the first housing 10 is a housing of the MRI apparatus. The second housing 20 is disposed in a ventilated environment, and in this embodiment, the second housing 20 is disposed outdoors, and may be an external facility or an external hanging machine.
In this embodiment, the circulating liquid is deionized water. In addition, in other embodiments, other liquids may be used for the circulating liquid, such as purified water, glycol, and the like.
In the present embodiment, the heat exchanger 110 is a plate evaporator, and a coolant pipe 600 and a refrigerant pipe 600 for heat exchange are provided therein; the coolant flows through the coolant line 600, and the refrigerant flows through the refrigerant line 600, and the two flows in reverse directions to exchange heat. Additionally, in other embodiments, the heat exchanger 110 is an evaporator in the form of a sleeve, shell-and-tube, or the like.
In this embodiment, the air-cooled condenser 410 is a copper tube-fin type condenser. In addition, in other embodiments, other configurations of the condenser are also possible, such as shell-and-tube condensers, plate condensers, and the like.
The following describes a specific circulation process of the refrigeration and heat exchange integrated unit provided in the embodiment of the application.
Wherein, the high-temperature low-pressure gaseous refrigerant after heat exchange in the condensing unit 400 is compressed into high-temperature high-pressure gaseous refrigerant by the compressor 120; next, the high-temperature and high-pressure gaseous refrigerant enters the air-cooled condenser 410 to be condensed, and exothermically liquefied into a liquid refrigerant; the refrigerant then enters a dry filter 130 for drying and filtering; next, the refrigerant enters the expansion valve 150 and is made into a refrigerant liquid of low temperature and low pressure; finally, the refrigerant liquid enters the heat exchanger 110 and exchanges heat with the circulating liquid to achieve cooling.
In summary, the water circulation unit 200 and the distributor unit 300 are connected through the pipeline 600 to form a cooling water path distributed in each part of the MR I apparatus, thereby forming a heat exchanger unit. The refrigerating unit 100 and the condensing unit 400 constitute a cooling unit. The two satisfy the functions of a heat exchanger unit and a water chiller in the prior art, and the heat exchanger 110 arranged in the refrigeration unit 100 cools the circulating liquid, so that heat emitted by each part in the MRI equipment is taken away. Because the heat exchanger 110 of the refrigerating and heat exchanging integrated unit provided by the embodiment of the application is arranged in the MR I equipment, secondary indirect heat exchange is avoided for direct heat exchange between the refrigerant and the circulating water, and therefore the refrigerating energy efficiency ratio is improved. And the refrigerating unit 100, the dispenser unit 300, the water circulation unit 200, and the electronic control unit 500 are integrated in the first housing 10, and the first housing 10 is provided in the MR I apparatus. The design can save space, and unnecessary external water cooling units are not required to be additionally configured, so that the cost is reduced, and complicated installation is avoided.
The term "comprising" as used throughout this application should not be construed as limited to what is listed thereafter; it does not exclude other elements or steps.
It will be appreciated that those skilled in the art may implement the application in any suitable manner combining features of one or more embodiments mentioned throughout the application with features of other embodiments.
Note that the above is only the preferred embodiments of the present application and the technical principles applied. Those skilled in the art will appreciate that the present application is not limited to the particular embodiments described herein, but is capable of numerous obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the technical concept of the present application, which falls within the protection scope of the present application.
Claims (10)
1. A refrigeration heat transfer unit for cooling nuclear magnetic resonance imaging equipment, its characterized in that includes:
a water circulation unit for storing and driving the circulation liquid;
the distributor unit comprises a plurality of circulation loops, each circulation loop extends into each part in the nuclear magnetic resonance imaging equipment, the inlets of the plurality of circulation loops are connected in parallel to the outlet of the water circulation unit, and the outlets of the plurality of circulation loops are connected in parallel to the inlet of the water circulation unit, so that the distributor unit and the water circulation unit form a closed loop;
the system comprises a plurality of refrigeration units, a plurality of heat exchangers and a plurality of heat exchangers, wherein each refrigeration unit comprises a heat exchanger, and a pipeline of the water circulation unit sequentially passes through the plurality of heat exchangers and is used for realizing heat exchange between circulating liquid in the pipeline of the water circulation unit and refrigerant in the pipeline of the refrigeration unit at the heat exchangers;
the pipeline of each refrigeration unit is connected with a condensing unit pipeline to form a closed pipeline.
2. The refrigeration and heat exchange integrated unit as set forth in claim 1, further comprising:
a first housing in which the water circulation unit, the dispenser unit, and the plurality of refrigeration units are disposed;
and a second housing in which a plurality of the condensing units are disposed.
3. The refrigeration and heat exchange integrated unit according to claim 2, wherein the first housing is provided indoors/in the nuclear magnetic resonance imaging apparatus, and the second housing is provided outdoors.
4. The refrigeration and heat exchange integrated unit according to claim 1, wherein the water circulation unit includes:
the inlet of the water tank is connected with the outlet pipelines of the plurality of circulating loops, and the water tank is used for storing circulating liquid;
and the inlet of the water pump is connected with the outlet pipeline of the water tank, and the outlets of the water pump are connected with the inlet pipelines of the circulating loops.
5. The refrigeration and heat exchange integrated unit as set forth in claim 1, wherein the condensing unit includes:
the outlet of the air-cooled condenser is connected with the inlet pipeline of the heat exchanger;
the fan is arranged on the air-cooled condenser and used for cooling the air-cooled condenser.
6. The refrigeration and heat exchange unit as recited in claim 5 wherein the refrigeration unit further comprises:
the inlet of the compressor is connected with the outlet pipeline of the heat exchanger, and the outlet of the compressor is connected with the inlet pipeline of the air-cooled condenser;
the outlet of the air-cooled condenser is connected with an inlet pipeline of the drying filter;
and the outlet of the dry filter is connected with the inlet pipeline of the expansion valve, and the outlet of the expansion valve is connected with the inlet pipeline of the heat exchanger.
7. The refrigeration and heat exchange integrated unit according to claim 6, wherein,
a pressure sensor is arranged on a connecting pipeline between the air-cooled condenser and the drying filter;
a temperature sensor is arranged on a connecting pipeline between the expansion valve and the heat exchanger;
and a liquid viewing mirror is arranged on a connecting pipeline between the drying filter and the expansion valve.
8. A refrigeration and heat exchange unit as set forth in claim 1 or 2 wherein said distributor unit further includes:
a flow meter disposed at an inlet of the dispenser unit for metering a flow rate of the dispenser unit;
a pressure sensor disposed at an inlet of the dispenser unit for measuring a pressure in the pipeline;
a temperature sensor provided at an inlet of the dispenser unit for measuring a temperature in the pipe;
and the control valves are respectively arranged at the outlets of the circulating loops.
9. The refrigeration and heat exchange integrated unit as set forth in claim 2 further comprising an electronic control unit disposed within said first housing, said electronic control unit being electrically connected to said water circulation unit, said distributor unit, said plurality of refrigeration units, and said plurality of condensing units, respectively.
10. The refrigeration and heat exchange integrated unit of claim 1, wherein the heat exchanger is an evaporator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311559739.1A CN117677149A (en) | 2023-11-21 | 2023-11-21 | Refrigerating and heat exchanging integrated unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311559739.1A CN117677149A (en) | 2023-11-21 | 2023-11-21 | Refrigerating and heat exchanging integrated unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117677149A true CN117677149A (en) | 2024-03-08 |
Family
ID=90070535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311559739.1A Pending CN117677149A (en) | 2023-11-21 | 2023-11-21 | Refrigerating and heat exchanging integrated unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117677149A (en) |
-
2023
- 2023-11-21 CN CN202311559739.1A patent/CN117677149A/en active Pending
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