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CN-119085163-B - Compression heat exchange integrated device of compression card refrigerating system

CN119085163BCN 119085163 BCN119085163 BCN 119085163BCN-119085163-B

Abstract

The invention discloses a compression heat exchange integrated device of a compression card refrigerating system, which comprises a pressure head, a plurality of metal pipelines, compression card materials, a base and an outer heat preservation layer, wherein the metal pipelines are uniformly distributed at equal intervals, the compression card materials are filled between the metal pipelines to form a cylindrical body, the outer heat preservation layer is wrapped on the outer layer of the cylindrical body, a first flow passage and a second flow passage are respectively arranged in the pressure head and the base, limit holes with the same number as the metal pipelines are arranged below the first flow passage in the pressure head, each limit hole is in sealing connection with the upper end of one metal pipeline, and the lower end of the metal pipeline is communicated with the second flow passage. The invention has higher efficiency.

Inventors

  • Zhu Liutao
  • DAI ZHAOFENG
  • HUANG SHIFANG
  • ZHANG XIAOSONG

Assignees

  • 东南大学

Dates

Publication Date
20260512
Application Date
20240801

Claims (10)

  1. 1. The compression heat exchange integrated device of the pressure card refrigeration system is characterized by comprising a pressure head (1), a plurality of metal pipelines (2), pressure card materials (3), a base (4) and an outer heat preservation layer (5), wherein the metal pipelines (2) are uniformly distributed at equal intervals, the pressure card materials (3) are filled between the metal pipelines (2) and form a cylindrical body, the outer heat preservation layer (5) is wrapped on the outer layer of the cylindrical body, a first flow channel (6) and a second flow channel (7) are respectively arranged in the pressure head (1) and the base (4), limiting holes (8) with the same number as the metal pipelines (2) are arranged below the first flow channel (6) in the pressure head (1), each limiting hole (8) is in sealing connection with the upper end of one metal pipeline (2), and the lower end of the metal pipeline (2) is communicated with the second flow channel (7); The compression heat exchange integrated device realizes refrigeration by adopting the following steps: The compression process comprises the steps that a pressure head (1) runs downwards to transmit pressure to a clamping material (3), the clamping material (3) is restrained by the pressure head (1) and an outer heat insulation layer (5) and a base (4) to shrink in volume, the temperature of the clamping material (3) rises under the driving of a clamping effect, a metal pipeline (2) positioned in the clamping material (3) passes through a limit hole (8) in the pressure head (1) to form a seal on the clamping material (3), and the clamping material is not subjected to axial pressure; 2) The cooling process comprises that cooling fluid flows into a metal pipeline (2) through a first flow passage (6) in a pressure head (1) under the drive of external force, reduces the temperature of a clamping material (3), flows out from a second flow passage (7) in a base (4), and exchanges heat with the outside; 3) The pressure reducing process comprises that the pressure head (1) moves upwards to reduce the pressure transmitted to the card pressing material (3), the card pressing material expands in volume under the restraint of the pressure head (1), the outer heat insulation layer (5) and the base (4), and the temperature is further reduced under the drive of the card pressing effect; 4) The refrigeration process comprises the steps that cold fluid flows into a metal pipeline (2) through a first flow passage (6) in a pressure head (1) under the drive of external force, then exchanges heat with a pressing card material (3), takes cold energy of the pressing card material, flows out from a second flow passage (7) in a base (4), exchanges heat with the outside, and cools the outside.
  2. 2. The compression heat exchange integrated device of the press-card refrigeration system according to claim 1, wherein the press-card material (3) is made of 17% by mass of NPG, 68% by mass of TMP and 15% by mass of graphene.
  3. 3. The integrated compression heat exchange device of the pressure card refrigerating system according to claim 1, wherein the filling height of the pressure card material (3) is 200 mm.
  4. 4. The compression heat exchange integrated device of the pressure card refrigerating system as set forth in claim 1, wherein the outer heat preservation layer (5) comprises a metal wall surface and heat-insulating cotton with ground heat conductivity.
  5. 5. The compression heat exchange integrated device of the pressure card refrigeration system according to claim 1, wherein the metal pipelines (2) are distributed in a triangular equidistant manner, namely, each metal pipeline (2) is composed of three equidistant adjacent metal pipelines (2).
  6. 6. The compression heat exchange integrated device of the pressure card refrigeration system according to claim 1, wherein the metal pipelines (2) are distributed at equal intervals in a square shape, namely, each metal pipeline (2) is composed of four metal pipelines (2) which are adjacent at equal intervals.
  7. 7. The compression heat exchange integrated device of the pressure card refrigeration system according to claim 1, wherein the metal pipelines (2) are distributed at regular hexagons and equal intervals, namely each metal pipeline (2) is composed of six equally-spaced adjacent metal pipelines (2).
  8. 8. The compression heat exchange integrated device of the pressure card refrigerating system according to claim 1, wherein the metal pipeline (2) is filled with heat exchange fluid.
  9. 9. The compression heat exchange integrated device of the press card refrigerating system of claim 1, wherein the packing rate of the press card material (3) is 20% -40%.
  10. 10. A compression card refrigeration system comprising the compression heat exchange integrated device of any one of claims 1-9.

Description

Compression heat exchange integrated device of compression card refrigerating system Technical Field The invention relates to a compression card refrigeration technology, in particular to a compression heat exchange integrated device of a compression card refrigeration system. Background Refrigerating technology is an indispensable technology in modern society and is widely applied to the fields of household appliances, industry, commerce, cold chains, vehicles and the like. At present, vapor compression refrigeration technology is the most mature and widely applied refrigeration technology, however, a series of problems caused by liquid refrigerant leakage have plagued the development of vapor compression refrigeration technology. At present, no liquid refrigerant can completely meet all requirements in the aspects of safety, ODP, GWP, thermodynamic performance and the like. In view of the bottlenecks encountered in the development of liquid refrigerants, solid refrigeration techniques, such as thermoelectric refrigeration, thermo-acoustic refrigeration, adsorption refrigeration, and thermal effect refrigeration, without the risk of refrigerant leakage, are increasingly attracting attention. The thermal effect refrigeration technology has higher theoretical efficiency, no application scene limitation and little influence on environment, and is regarded as the most potential solid refrigeration technology. At present, four technologies of electric card refrigeration, magnetic card refrigeration, card flicking refrigeration and card pressing refrigeration are mainly used for the heat effect refrigeration. The first three heat effect refrigeration technologies have quite theoretical and experimental foundations, but have some problems which are not completely solved in development and application. In comparison, although the research on the card pressing refrigeration technology is started later, the technology has wider selection range in terms of materials, and has simple driving mode in terms of a system, thereby avoiding some problems encountered by other three thermal effect refrigeration technologies. Thus, pressure card refrigeration is one of the most potential alternative technologies to vapor compression refrigeration. However, the prior art has little research on the compression heat exchange device of the compression card refrigeration system, and the efficiency is still to be improved. Disclosure of Invention Aiming at the problems existing in the prior art, the invention aims to provide a compression heat exchange integrated device of a pressure card refrigerating system with higher efficiency. In order to achieve the above object, the present invention provides the following technical solutions: The utility model provides a press card refrigerating system's compression heat transfer integrated device, includes pressure head, a plurality of metal pipeline, press card material, base and outer heat preservation, equidistant evenly distributed of metal pipeline, press card material to pack between the metal pipeline to form the tube-shape body, outer heat preservation parcel is in the tube-shape body skin, the pressure head with be equipped with first runner and second runner in the base respectively, first runner below is equipped with spacing hole with the same quantity of metal pipeline in the pressure head, every spacing hole and the upper end sealing connection of a metal pipeline, the lower extreme and the second runner of metal pipeline communicate with each other. Further, the card pressing material is prepared from 17% by mass of NPG, 68% by mass of TMP and 15% by mass of graphene. Further, the filling height of the press-clamping material is 200mm. Further, the outer heat-insulating layer comprises a metal wall surface and heat-insulating cotton with ground heat conductivity. Alternatively, the metal pipes are distributed at equal intervals in a triangle, that is, each metal pipe is formed by three metal pipes adjacent at equal intervals. The metal pipes can be distributed at equal intervals in a square shape, namely, each metal pipe is formed by four metal pipes which are adjacent at equal intervals. The metal pipes can also be distributed at regular hexagons at equal intervals, namely, each metal pipe is formed by six metal pipes adjacent at equal intervals. Further, the metal pipeline is filled with heat exchange fluid. Further, the filling rate of the pressing card material is 20% -40%. A compression card refrigerating system comprises the compression heat exchange integrated device. Compared with the prior art, the invention has the beneficial effects that: (1) Unlike four parts of traditional vapor compression refrigerating system, the invention integrates the parts of compression and heat exchange, thus saving space greatly and reducing complexity of system; (2) Through the design of the limiting holes on the first runner, the metal pipeline passes through the limiting holes, so th