Self-pressure-relief air distribution mechanism and cryogenic refrigerator using same

Self-pressure-relief air distribution mechanism and cryogenic refrigerator using same

A self-pressure-relief air distribution mechanism includes an air distribution valve (6) where a rear face of the air distribution valve (6) is divided into a high-pressure face (66) and a low-pressure face (65), each hermetically separated by a third sealing ring (b3) that seals the air distributio...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Xia, Chenxi, Zhou, Zhipo, Li, Ao, Ge, Jinhong
Format: Patent
Sprache:eng
Schlagworte:
ACTUATING-FLOATS
BLASTING
COCKS
COMBINED HEATING AND REFRIGERATION SYSTEMS
DEVICES FOR VENTING OR AERATING
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEAT PUMP SYSTEMS
HEATING
LIGHTING
LIQUEFACTION SOLIDIFICATION OF GASES
MANUFACTURE OR STORAGE OF ICE
MECHANICAL ENGINEERING
REFRIGERATION MACHINES, PLANTS OR SYSTEMS
REFRIGERATION OR COOLING
TAPS
THERMAL INSULATION IN GENERAL
VALVES
WEAPONS
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Beschreibung
Zusammenfassung:A self-pressure-relief air distribution mechanism includes an air distribution valve (6) where a rear face of the air distribution valve (6) is divided into a high-pressure face (66) and a low-pressure face (65), each hermetically separated by a third sealing ring (b3) that seals the air distribution valve (6) and a cover (2). A low-pressure passage (22) of the cover (2) can communicate with the rear face of the air distribution valve (6) via a pressure-relief hole (61), to guide a low-pressure airflow in the cover (2) to the rear face of the air distribution valve (6). A cryogenic refrigerator includes the self-pressure-relief air distribution mechanism. With the provision of the pressure-relief hole (61) and the third sealing ring (b3), the self-pressure-relief air distribution mechanism has a reduced pressure receiving area, thereby reducing a positive acting force and reducing wear.