| 摘要 |
A multi-type pulse-tube refrigerating system includes a common compressor 1 having a sucking port 1b and a discharging port 1a, a plurality of paralleled pressure changeover valve units 21, 22 and 23 connecting between the sucking port 1b and the discharging port 1a of the compressor 1, and a plurality of pulse-tube based cryogenic temperature generating devices 310, 410 and 510 connected to the respective pressure changeover valve units 21, 22 and 23. Employing such cryogenic temperature generating devices 310, 410 and 510, each of which is void of moving parts, limits vibrations. Moreover, instead of the pressure changeover valve units 21, 22 and 23, employing a common pressure changeover valve unit 24 for the units 21, 22 and 23 makes the refrigerating system more compact.
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