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Sorption pump with integrated thermal switch

An adsorption pump and adsorption material technology, which can be applied to liquid variable capacity machinery, pumps, instruments, etc., can solve the problems of increasing the length of the heat transfer path of the refrigerator and the adsorption pump, increasing the complexity of the system, and increasing the cost.

Inactive Publication Date: 2010-02-10
GENERAL ELECTRIC CO
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  • Summary
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AI Technical Summary

Problems solved by technology

This externally located thermal switch adds to the complexity of the overall system by adding an extra component to the system
Adding separate thermal switch components increases overall system cost and increases the chance of electrical or mechanical failure
Also, placing the thermal switch outside the sorption pump increases the path length for heat transfer between the refrigerator and the sorption pump, thereby degrading the overall thermal performance and adding extra cost to cool the sorption pump
[0006] Therefore, existing thermal switches used to turn the sorption pump on and off to switch between sorption and desorption modes are inefficient and result in high cost and failure rates

Method used

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  • Sorption pump with integrated thermal switch
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Embodiment Construction

[0016] See attached figure 1 , where one embodiment of a sorption pump system 10 is shown. The sorbent pump system 10 is a closed cycle thermal system configured to hyperpolarize an imaging agent sample for use in magnetic resonance imaging (MRI). For example, samples can be obtained by 13 C 1 -pyruvate ( 13 C 1 -Pyruvate) or another similar metabolic imaging agent that can be polarized. The sorption pumping system 10 is formed in part by a vacuum chamber 12 which encloses the internal components of the system. A refrigerator 14 is also included as a cooling system for the system. In one embodiment, the refrigerator is a closed cycle refrigerator capable of providing a low temperature environment below 10K. as attached figure 1 As shown, the refrigerator 14 is disposed at least partially outside the vacuum chamber 12 . Such a structure enables any heat generated by the refrigerator 14 to be discharged to the external environment without being discharged to the outside...

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Abstract

A sorption pumping system includes a conductive inner vessel having a sorbent material therein to adsorb gas molecules. An outer vessel is positioned about the inner vessel and includes a heat transfer flange connected thereto. A gas chamber is formed between the inner vessel and the outer vessel. The gas chamber is constructed to sealably contain a thermally conductive gas therein.

Description

technical field [0001] The present invention relates generally to sorption pumps, and more particularly to a sorption pump with an integral thermal switch. Background technique [0002] A sorption pump is a vacuum pump that achieves a partial vacuum in a desired system by adsorbing molecules on a highly porous molecular sieve material (ie, sorbent material) cooled to cryogenic temperatures. A sorption pump is capable of reducing the pressure in the system to approximately 10 -7 mbar without many of the disadvantages associated with other types of pumping systems used to reduce pressure. That said, sorption pumps have the advantage of eliminating oil and other contaminants that are present in open system pumps and, since no moving parts are used in them, provide low cost and vibration-free operation in operation. [0003] Sorbent pumps are usually constructed as stainless steel, aluminum, or borosilicate glass vessels filled with an adsorbent material such as synthetic zeol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B37/02
CPCF04B37/02G01R33/282
Inventor J·A·乌尔巴恩J·阿尔登克耶尔-拉森
Owner GENERAL ELECTRIC CO
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