Patent ID: 8516833
Filing Date: 2013-08-27
Classification: F25B

Abstract:
1. A 4-valve pulse tube cryocooler comprising: a first regenerator including a high-temperature end and a low-temperature end; a first pulse tube including a high-temperature end and a low temperature end connected to the low-temperature end of the first regenerator; a compressor including a high-pressure end and a low-pressure end; a first coolant supply channel, including a first high-pressure pipe that includes a first on-off valve provided thereon, and connected to the high-pressure end of the compressor and the high-temperature end of the first regenerator; a second coolant supply channel, connected to the high-pressure end of the compressor, including a second high-pressure pipe that includes a second on-off valve provided thereon, and a first common pipe that includes a first flow control valve provided thereon and connected to the high-temperature end of the first pulse tube; a first coolant recovery channel including a first low-pressure pipe that includes a third on-off valve provided thereon, and connected to the low-pressure end of the compressor and the high-temperature end of the first regenerator; a second coolant recovery channel, connected to the low-pressure end of the compressor, including a second low-pressure pipe that includes a fourth on-off valve provided thereon, and the first common pipe that includes the first flow control valve provided thereon and connected to the high-temperature end of the first pulse tube; and a third coolant recovery channel including