| 摘要 |
PROBLEM TO BE SOLVED: To effectively utilize coldness and to improve cooling efficiency by providing a body to be cooled being thermally in contact between the high-temperature and low-temperature ends of a pulse pipe. SOLUTION: This cooling device is composed of a body 20 to be cooled that is in thermal contact continuously between a high-temperature end 18a and a low- temperature end 18b of a part for generating coldness of a pulse tube 18 of a pulse tube refrigerating machine A1 and a third body 32 to be cooled in thermal contact with the low-temperature end 16b of cold storage equipment 16 that communicates with the low-temperature end 18b of the pulse tube 18. The discharge side of a compression means 1 of a pressure vibration source communicates with high-pressure switching valves 2 and 3 via high-pressure pipes 6 and 7 and the suction side of the compression means 1 communicates with low-pressure switching valves 4 and 5 via low-pressure pipes 8 and 9. The high-pressure switching valves 2 and 3 and the low-pressure switching valves 4 and 5 are connected to such drive part 19 as a pulse motor, and the high-pressure switching valves 2 and 3 and the low-pressure switching valves 4 and 5 are switched at a certain timing, thus enabling the body 20 to be cooled to absorb heat over a wide continuous range between the high-temperature end 18a and the low-temperature end 18b of the pulse tube 18 and hence improving cooling efficiency.
|
