Temperature actuated flow restrictor

Details Temperature actuated flow restrictor Temperature actuated flow restrictor

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 31/70 (2006.01) F16K 15/00 (2006.01)

Patent

CA 2381135

A thermostat valve 10 is provided for controlling gas flow to an infrared catalytic heater 26. The thermostat valve includes a thermally responsive snap member 50, 64, 150 positioned within a housing central flow path and moveable with respect to the housing between open and closed positions. An elastomeric seal 54 supported on the housing surrounds the central flow path and engages the snap member when in the closed position. A restricted flow path 58, 68, is provided in one of the housing and the snap disk for passing gas to the catalytic heater when the snap member is closed. The thermostat valve is relatively simple yet highly reliable.

Une soupape de thermostat 10 est prévue pour réguler l'écoulement de gaz vers un réchauffeur catalytique infrarouge 26. La soupape de thermostat comprend un élément d'encliquetage réagissant thermiquement 50, 64, 150 placé à l'intérieur d'un trajet d'écoulement central d'un boîtier et pouvant se déplacer par rapport au corps entre des positions ouverte et fermée. Un joint élastomère 54 supporté sur le boîtier entoure le trajet d'écoulement central et entre en prise avec l'élément d'encliquetage lorsqu'il est en position fermée. Un trajet d'écoulement restreint 58, 68, est prévu dans le boîtier et le disque d'encliquetage pour faire passer le gaz vers le réchauffeur catalytique lorsque l'élément d'encliquetage est fermé. La soupape de thermostat est relativement simple mais très fiable.

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