A safety device for gas heating apparatus |
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| 申请号 | EP83830161 | 申请日 | 1983-08-03 | 公开(公告)号 | EP0100758A3 | 公开(公告)日 | 1984-06-06 |
| 申请人 | OFFICINE DI PERNUMIA di Giancarlo de' STEFANI & C. S.a.s.; | 发明人 | de' Stefani, Pierluigi; | ||||
| 摘要 | A safety device for gas heating apparatus, is provided which is responsive to a reduction in the oxygen content in the environment in which the apparatus is located, to close a main solenoid valve (3) controlling the gas supply. The device includes a temperature transducer the temperature sensitive element (13) of which is fixed to the outside of the wall (16) of a pilot burner tube (2) to detect its temperature. In dependence on the detected temperature, the transducer generates a signal which, when the pilot flame burns in a first position (A) in the pilot burner tube (2), corresponding to normal environmental conditions, maintains the gas-supply solenoid valve (5) open and which on the other hand causes the latterto close when the pilot flame burns in a second position (B) as a result of its displacement due to a lowering of the oxygen content in the environment. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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