Compact ultra-high vacuum GM refrigerating machine

An ultra-high vacuum and compact technology, which is applied in the field of experimental instruments, can solve the problems of inconvenient sample rack rotation at a large angle and helium hoses occupying a large space, so as to reduce the required space, improve compactness, and realize large The effect of angle rotation

Pending Publication Date: 2020-05-26
FERMION INSTR SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For the current standardized GM refrigerator, the existing high-pressure helium hose of the expander faces the horizontal direction (in line with the direction of the motor). It is inconvenient to realize the large-angle rotation of the sample holder

Method used

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  • Compact ultra-high vacuum GM refrigerating machine
  • Compact ultra-high vacuum GM refrigerating machine
  • Compact ultra-high vacuum GM refrigerating machine

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Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0026] In a specific embodiment, such as Figure 1-Figure 5 As shown, a compact GM refrigerator for ultra-high vacuum includes a GM refrigeration expander (1), an adapter flange, and a cold head, and one side of the adapter flange is connected to the GM refrigeration expander (1) , the other side is connected to the cold head, the GM refrigeration expander (1) is provided with a gas inlet (2) and a gas outlet (3), characterized in that: the transfer flange includes...

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Abstract

The invention provides a compact ultra-high vacuum GM refrigerating machine. The compact ultra-high vacuum GM refrigerating machine comprises a GM refrigerating expander, an adapter flange and a coldhead, wherein one face of the adapter flange is connected with the GM refrigerating expander, the other face of the adapter flange is connected with the cold head, a gas inlet and a gas outlet are formed in the GM refrigerating expander, the compact ultra-high vacuum GM refrigerating machine is characterized in that the adapter flange comprises a large flange and small flanges, wherein the small flanges are connected to the large flange, flange pipelines are arranged on the small flanges, and the number of the small flanges is two or more than two. The compact ultra-high vacuum GM refrigerating machine has the beneficial effects that the space required by self-rotation of a sample holder is reduced, and the compactness of a product is improved so that large-angle rotation can be realized.

Description

technical field [0001] The invention relates to the field of experimental instruments, in particular to a compact GM refrigerator for ultra-high vacuum. Background technique [0002] A GM refrigerator is a device that utilizes continuous adiabatic expansion to generate refrigeration. It consists of two parts, a helium compressor and an expander. Among them, the common expander has two-stage cold heads, the first-stage cold head can achieve a low temperature of 45K, and the second-stage cold head can achieve a low temperature of 4.2K. GM refrigerators have been widely used, mainly in cryopumps, superconducting magnet cooling, helium liquefiers, and other devices that require low-temperature environments. [0003] For the current standardized GM refrigerator, the existing high-pressure helium hose of the expander faces the horizontal direction (consistent with the direction of the motor). It is inconvenient to realize the large-angle rotation of the sample holder. [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B9/14F25B41/06F25B49/00F25B41/30
CPCF25B9/14F25B49/00F25B41/31
Inventor 谢斌平董金奎王冰雷
Owner FERMION INSTR SHANGHAI CO LTD
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