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Reciprocating room temperature magnetic refrigerating machine and refrigerating method

A room temperature magnetic refrigerator, a technology of magnetic refrigerator, applied in refrigerators, refrigeration and liquefaction, machines using electric/magnetic effects, etc., can solve the problems of difficult maintenance, increased device complexity, high price, etc., and achieve a simple structure. Effect

Inactive Publication Date: 2008-07-16
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the former, using superconducting technology can generate a very high magnetic field, but applying it to room temperature magnetic refrigeration will greatly increase the complexity of the device, make it difficult to realize, and it is expensive and difficult to maintain, so it is only suitable for theory and Experimental Research

Method used

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  • Reciprocating room temperature magnetic refrigerating machine and refrigerating method
  • Reciprocating room temperature magnetic refrigerating machine and refrigerating method
  • Reciprocating room temperature magnetic refrigerating machine and refrigerating method

Examples

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Embodiment 1

[0030] This embodiment provides a reciprocating room temperature magnetic refrigerator, including a magnetic field source, a magnetic working medium, a heat transfer fluid circulating pipe, a heat exchanger, and a control unit. The magnetic field source is mainly composed of permanent magnets, and the magnet is installed on A servo ball screw slide; the magnetic working medium is placed in a magnetic refrigeration box, and the refrigeration box is installed in the air gap of the magnetic field source, and the two ends of the refrigeration box are controlled by valves respectively. The flow direction of the hot fluid; a heat transfer fluid circulation pipe, the heat transfer fluid pipe is provided with a fluid pump, and the heat transfer fluid flows to different heat exchangers according to the heat absorption and heat release of the magnetic working fluid; heat exchange The device performs heat exchange on the heat transfer fluid; the control unit controls the coordinated operatio...

Embodiment 2

[0038] This embodiment provides a refrigeration method for a reciprocating room temperature magnetic refrigerator. In the method, the flow direction of the heat transfer fluid is controlled by a control unit to complete the cycle process of the magnetic refrigerator.

[0039] Referring to Fig. 5, a refrigeration method of a reciprocating room temperature magnetic refrigerator includes the following steps:

[0040] Install the refrigeration box with the magnetic working medium in the air gap of the magnetic field source;

[0041] The flow direction of the heat transfer fluid at both ends of the refrigeration box is controlled by the control unit.

[0042] Referring to FIG. 6, the flow direction circulation process of the heat transfer fluid of the above-mentioned refrigerator further includes the following steps:

[0043] Determine the position of the servo slide;

[0044] According to the position of the servo slide, the control unit sends a hold signal to the stepping motor, and se...

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Abstract

The invention discloses a reciprocating room-temperature magnetic refrigerator and a refrigerating method thereof. The magnetic refrigerator mainly comprises a magnetic field source, a magnetic working medium, a heat transmitting liquid circulation pipeline, a heat exchanger and a control unit, wherein, the magnetic field source is mainly composed of a permanent magnet, and the magnetic working medium is arranged in a magnetic refrigeration box. The heat transmitting liquid in the heat transmitting liquid circulation pipeline is circulated according to the heat absorption and release conditions of the magnetic working medium, and the heat transmitting liquid is exchanged through the heat exchanger. The coordination between the parts is controlled by the control unit. The refrigeration method of the magnetic refrigerator is that the refrigeration box in which the magnetic work medium is arranged is arranged in a gas gap of the magnetic field source and the control unit is adopted to control the flowing direction of the heat transmitting liquid at the two ends of the refrigeration box. The invention has simple structure and does not need the use of compressors and complicated mechanical action units and realizes a refrigerating effect at the room temperature.

Description

Technical field [0001] The invention relates to a magnetic refrigerator and a cooling method, in particular to a reciprocating room temperature magnetic refrigerator and a cooling method. Background technique [0002] Refrigeration technology has been widely used in many industries, including cryogenic engineering, gas liquefaction, petrochemicals, aerospace, air-conditioning refrigerators and other industries. In industrial production and scientific research, refrigeration is usually divided into low temperature refrigeration (below 20K), medium temperature refrigeration (between 20K and 80K) and high temperature refrigeration (above 80K). In the field of low-temperature refrigeration, magnetic refrigeration technology occupies an absolute advantage. It is mainly used to produce cooling liquids such as liquid helium and liquid nitrogen. Magnetic refrigeration in the high temperature zone or room temperature zone is the current goal of human efforts. If it can be achieved, it wil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B21/00
CPCY02B30/66Y02B30/00
Inventor 曾德长郑志刚钟喜春余红雅黄伟东
Owner SOUTH CHINA UNIV OF TECH
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