Pulse tube refrigerator with cartridge type regenerator

Abstract

A pulse tube, a high temperature end and a low temperature end being defined thereof, has an inner space. A regenerator case defined a high temperature end and a low temperature end. A regenerator includes a cartridge case and a regenerator material filled in the cartridge case. The cartridge case is removably inserted into the regenerator case. A first passage communicates a space in the regenerator on a low temperature end side into which case the regenerator is inserted, with a space in the pulse tube on a low temperature end side. A gas supply unit repeats a supply and a recovery of a working gas. A second passage couples the gas supply unit to a space in the regenerator case on a high temperature end side into which case the regenerator is inserted.

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