Patent ID: 6389819
Filing Date: 2002-05-21
Classification: F25B

Abstract:
A pulse tube refrigerator having a pressure oscillation source comprising:a first regenerator having a hot end connected to the pressure oscillation source and a cold end; a first cold head connected with the cold end of the first regenerator; a first pulse tube having a hot end and a cold end, the cold end of the first pulse tube being connected to the first cold head; the first regenerator, the first cold head and the first pulse tube forming a first cooling part; a second regenerator having a hot end and a cold end, the hot end of the second regenerator being connected to the hot end of the first pulse tube; a second cold head connected to the cold end of the second regenerator; a second pulse tube having a hot end and a cold end, the second pulse tube being connected to the cold end of the second cold head; the second regenerator, the second cold head and the second pulse tube forming a second cooling part.