Aisin Seiki Kabushiki Kaisha

Kimio Aoyama

Tatsuo Inoue

Shin Kawano

Masafumi Nogawa

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

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Kariya, Japan

Kimio Aoyama