Cryogenic refrigerator

Refrigeration – Gas compression – heat regeneration and expansion – e.g.,...

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62402, F25B 900

Patent

active

044780460

ABSTRACT:
A cryogenic refrigerator of rotary type which comprises a generally cylindrical rotor and an expander formed about a first axial portion of the rotor which is used as the expander rotor, with a plurality of radial vanes for defining about the expander rotor a series of expansion compartments which vary in volume as the rotor rotates. A regenerator is provided inside or outside and about a second axial portion of the rotor adjacent to and in fluid communication with the expander compartments. A compressor supplies compressed gas to the expander compartments for adiabatic expansion accompanied by a temperature drop of the expanded gas, which is conducted through the regenerator back to the compressor. The compressor may be of a rotary type and formed about a third axial portion of the rotor adjacent to the regenerator, with the third rotor portion being used as the compressor rotor having a plurality of radial vanes for defining about the compressor rotor a series of compression compartments which, as the rotor rotates, vary in volume in a predetermined correlation to the variation of volume of the expansion compartments.

REFERENCES:
patent: 3483694 (1969-12-01), Huber et al.
patent: 3487424 (1969-12-01), Leger
patent: 3488945 (1970-01-01), Kelly
patent: 3492818 (1970-02-01), Kelly
patent: 3516245 (1970-06-01), Kelly
patent: 3535872 (1970-10-01), Kelly
patent: 3537256 (1970-11-01), Kelly
patent: 3537269 (1970-11-01), Kelly

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