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Magnetic heat pump device

A pump device, magneto-thermal technology, applied in the direction of magnetic materials, magnetic objects, inorganic materials, etc., can solve the problems of narrow effective temperature range and inability to obtain temperature changes, etc.

Inactive Publication Date: 2019-06-28
SANDEN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the above-mentioned Mn-based and La-based magnetic working substances, although the magnetic entropy changes due to excitation and demagnetization are large and the heat absorption / radiation capabilities are also large, the effective temperature range is narrow and the required temperature change cannot be obtained by a single substance. such shortcomings

Method used

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  • Magnetic heat pump device
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Examples

Experimental program
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Embodiment Construction

[0031] Hereinafter, an embodiment of the present invention will be described based on the drawings. figure 1 is an overall configuration diagram of a magnetic heat pump device 1 to which an embodiment of the present invention is applied, figure 2 It is a sectional view of the magnetic heat pump AMR 2 of the magnetic heat pump device 1 . In addition, the target cooling capacity of the magnetic heat pump device 1 of the embodiment is set to 100W.

[0032] (1) Structure of the magnetic heat pump device 1

[0033] first of all, yes figure 2 The magnetic heat pump is described with AMR 2. The magnetic heat pump AMR2 of the magnetic heat pump device 1 includes: a hollow cylindrical casing 3; A pair (two) of permanent magnets 6 (magnetic field generating members) are installed. Both ends of the shaft of the rotary member 7 are rotatably supported by the casing 3, and are connected to a servo motor via a reduction gear not shown, and are controlled to rotate by the servo motor....

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PUM

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Abstract

Provided is a magnetic heat pump device (1) comprising: magnetic working bodies (11A-11D); a permanent magnet (6); a circulation pump (24); rotary valves (8, 9); and heat exchangers (21, 28). Ducts (12) in the magnetic working bodies are filled from a low-temperature end (16) to a high-temperature end (14) with a plurality of types of magnetic working substances (13A-13C) in order of how low the Curie points thereof are, the magnetic working substances are thereby connected in cascade, and the dimensions of the areas filled with each of the magnetic working substances are made to correspond topredetermined specific temperature ranges in which there is a large change in temperature in each of the magnetic working substances. Effectively connecting a plurality of types of magnetic working substances in cascade makes it possible to obtain the necessary cooling and heat discharge temperatures.

Description

technical field [0001] The invention relates to a magnetic heat pump device utilizing the magnetocaloric effect of a magnetic working substance (Japanese: magnetic working substance). Background technique [0002] In recent years, attention has been paid to a magnetic heat pump device that replaces conventional vapor compression refrigerating devices using gas refrigerants such as Freon. The above magnetic heat pump device utilizes the property of a magnetic working material that undergoes a large temperature change when it is excited and demagnetized (magnetocaloric effect). ). As the above-mentioned magnetic working substance, Gd-based secondary phase change materials have been used in the past, but in recent years, Mn-based or La-based secondary phase-change materials that have a larger magnetic entropy change than the above-mentioned Gd-based materials have begun to be used (for example, refer to patent Literature 1). [0003] In the above-mentioned Mn-based and La-bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B21/00H01F1/01
CPCF25B21/00F25B2321/0022H01F1/015Y02B30/00H01F1/012
Inventor 裴相哲
Owner SANDEN CORP