IGNITER FAILURE DETECTION ASSEMBLIES FOR FURNACES, AND CORRESPONDING METHODS OF DETECTING IGNITER FAILURE |
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| 申请号 | US15916868 | 申请日 | 2018-03-09 | 公开(公告)号 | US20180306445A1 | 公开(公告)日 | 2018-10-25 |
| 申请人 | Emerson Electric Co.; | 发明人 | Harshal Manik Pawar; | ||||
| 摘要 | Exemplary embodiments are provided of igniter failure detection assemblies for furnaces. In an exemplary embodiment, an igniter failure detection assembly includes a hot surface igniter, an igniter relay coupled to the hot surface igniter, a resistor coupled in parallel with the hot surface igniter and defining a node between the igniter relay, the resistor and hot surface igniter, and a controller configured to detect a voltage at the node and determine whether a fault condition of the hot surface igniter exists based on the detected voltage at the node. A detected node voltage corresponding to a normal operation resistance value of the hot surface igniter is indicative of a normal operating hot surface igniter, and a detected node voltage corresponding to a resistance value of the resistor is indicative of a fault condition of the hot surface igniter. Example methods of detecting an igniter fault condition are also disclosed. | ||||||
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| 说明书全文 | |||||||
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