| 摘要 |
An exhaust hood apparatus, adapted to be mounted over a cooking station for expelling air containing cooking by-products, is described herein. The exhaust hood apparatus includes a controller circuit electrically connected to at least a temperature sensor, an exhaust fan and a plenum chamber washing system. The controller circuit is configured so as to energize the exhaust fan and the washing system if the temperature sensor detects a temperature that is above a predetermined threshold, indicating an uncontrolled fire in progress. A portion of the water exiting the washing system is therefore drawn in the exhaust duct by the exhaust fan to thereby cool the exhaust duct and maintain it below a predetermined safety temperature. Furthermore, the exhaust fan also draws at least some of the smoke generated by the uncontrolled fire.
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