发明授权
US3896857A Control device having a bleed valve and an automatic valve operated sequentially by a single bimetal element
失效
控制装置具有排气阀和由单个双金属元件依次操作的自动阀
- 专利标题: Control device having a bleed valve and an automatic valve operated sequentially by a single bimetal element
- 专利标题(中): 控制装置具有排气阀和由单个双金属元件依次操作的自动阀
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申请号: US44409274申请日: 1974-02-20
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公开(公告)号: US3896857A公开(公告)日: 1975-07-29
- 发明人: TURNER JESS H , WALLACE ELMER E , FIEDLER JR FRANK
- 申请人: ESSEX INTERNATIONAL INC
- 专利权人: Essex International Inc
- 当前专利权人: Essex International Inc
- 优先权: US44409274 1974-02-20
- 主分类号: F23N1/00
- IPC分类号: F23N1/00 ; F16K31/42 ; G05D23/185
摘要:
A dual shut-off gas control device having a diaphragm operated valve and a control valve disposed in series in the main flow path to control the flow of fuel to a main burner. A single bimetal element acts to operate both a bleed valve and a control or automatic valve in a sequential manner when heated by a thermostatically controlled heater. The bleed valve includes an inlet bleed valve connected to the inlet, an outlet bleed valve connected to an outlet pressure chamber and an outlet connected to an operating pressure chamber. The main diaphragm responds to a pressure differential between the outlet pressure chamber and the operating pressure chamber. Outlet pressure regulation is provided by a diaphragm operated pressure regulator valve which has its inlet connected to the outlet of the bleed valve and its outlet connected to the outlet of the control device. Dual shutoff of the main flow path is provided by the main diaphragm operated valve and the automatic valve and dual shut-off of the bleed flow path is provided by the inlet bleed valve and the pressure regulator valve. A modification of the main diaphragm operated valve provides for a step opening.
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