Patent ID: 6343475
Filing Date: 2002-02-05
Classification: F25B

Abstract:
A pulse tube refrigerator comprising:a first pulse tube, a high temperature end and a low temperature end being defined at both ends thereof, and having an inner space; a first regenerator case of a tubular type, a high temperature end and a low temperature end being defined at both sides thereof; a first regenerator including a first cartridge case and a first regenerating material filled in the first cartridge case, the first cartridge case being removably inserted into said first regenerator case; a first passage communicating a space in said first regenerator case on a low temperature end side into which case said first regenerator is inserted, with a space in said first pulse tube on a low temperature end side; a gas supply unit for repeating a supply and a recovery of a working gas; and a second passage for coupling said gas supply unit to a space in said first regenerator case on a high temperature end side into which case said first regenerator is inserted.