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Heat exchanger for cryogenic refrigerator with helium as working gas, method for producing such heat exchanger, and cryogenic refrigerator including such heat exchanger
Heat exchanger for cryogenic refrigerator with helium as working gas, method for producing such heat exchanger, and cryogenic refrigerator including such heat exchanger
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机译：用于以氦为工作气体的低温致冷机的热交换器，该热交换器的制造方法以及包括该热交换器的低温致冷机
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摘要
Helium as a working gas in cryogenic refrigerators has a relatively high heat capacity that matches the heat capacity of rare earth compounds in the temperature range of 2K to 20K. A heat exchanger having a simple structure, despite using helium as the heat storage material, consists of a hollow cell 2 having a thermally conductive cell wall 4. The outer side 4a of the cell wall at least partially delimits a flow channel 12 for helium working gas. The hollow cavity 6 is filled with helium as a heat storage material and is connected to the outside of the cell via a pressure-balancing opening 8. The helium working gas flows around the can-shaped cell, thereby transferring heat between the helium working gas outside the cavity and the helium inside the cavity through the cell walls. The size of the cell (s) relative to the size of the working gas flow channel is selected such that the desired pressure difference between the high and low pressure sides of the heat exchanger is set while minimizing the waste volume. You. [Selection diagram] Fig. 1
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