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Low-temperature refrigerator

A low-temperature refrigerator and low-temperature heat exchanger technology, which is applied in household refrigerators, coolers, lighting and heating equipment, etc., can solve the problems of unadjustable evaporation temperature, complex system, and large volume.

Pending Publication Date: 2021-06-11
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on the problems that the existing low-temperature refrigerators mostly use cascade refrigeration or mixed refrigerants, the evaporation temperature cannot be adjusted, and the system is complicated and the volume is large, the application provides a low-temperature refrigerator

Method used

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Examples

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Embodiment

[0048] The embodiment of the present application provides a low-temperature refrigerator adopting gas refrigeration, and its working principle diagram is shown in figure 1 as an example. figure 2 with image 3 The schematic diagrams of the system when the cryogenic heat exchangers are connected in parallel and in series respectively.

[0049] Such as figure 1 As shown, the application provides a low-temperature refrigerator adopting gas refrigeration, which mainly consists of a centrifugal compression and expansion integrated machine 1, an after-stage cooler 2, a low-temperature regenerator 3, a first flow regulating valve 4, and a second flow regulating valve 5 , the third flow regulating valve 6, the first low temperature heat exchanger 7 and the second low temperature heat exchanger 8. The after-stage cooler 2 is connected with the compression outlet, the hot side of the low-temperature regenerator 3 is connected with the after-stage cooler 2 and the expansion inlet, an...

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PUM

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Abstract

The invention belongs to the technical field of refrigeration, and particularly relates to a low-temperature refrigerator. Cascade refrigeration or mixed refrigerants are mostly adopted in an existing low-temperature refrigerator, the evaporation temperature cannot be adjusted, the system is complex, and the size is large. The low-temperature refrigerator provided by the invention comprises a gas refrigeration assembly, a flow adjusting assembly and a heat exchange assembly which are sequentially connected; the heat exchange assembly is arranged in a cold box and connected with the gas refrigeration assembly, and the gas refrigeration assembly is connected with a heat dissipation assembly; and the gas refrigeration assembly can adjust the pressure ratio by adjusting the rotating speed so as to control the lowest temperature of the low-temperature refrigerator, then the flow adjusting assembly controls cold energy finally fed into the refrigerator, and quick freezing or storage is achieved.

Description

technical field [0001] The application belongs to the technical field of refrigeration, and in particular relates to a low-temperature refrigerator. Background technique [0002] Refrigerator is a kind of refrigeration equipment to keep food or other items in a constant low temperature and cold state. Usually, the lowest temperature only needs to be -18°C. For scientific research, preservation of medical supplies, biological products, ocean products, electronic components, chemical Low temperature experiments and storage of special materials such as materials require lower temperatures. So there is a need for low temperature refrigerators. [0003] Most of the existing low-temperature refrigerators use cascade refrigeration or mixed refrigerants, the evaporation temperature cannot be adjusted, and the system is complicated and the volume is large. Contents of the invention [0004] 1. Technical problems to be solved [0005] Based on the problems that existing low-tempe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25D11/02F25D19/00F25B25/00F25B9/06F25B40/06F25B41/20F25B49/02
CPCF25D11/022F25D19/00F25B25/00F25B9/06F25B40/06F25B49/02
Inventor 侯予王喆锋陈双涛陈良杨潇翎宋书建张蓓乐
Owner XI AN JIAOTONG UNIV
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