Method, apparatus and system for safely and efficiently controll

Details Method, apparatus and system for safely and efficiently controll Method, apparatus and system for safely and efficiently controll

1999-04-15

2000-11-07

Lazarus, Ira S.

Stoves and furnaces

Stove hoods

55408, 55DIG36, F24C 1520

Patent

active

061421421

ABSTRACT:
The present invention provides a method, apparatus and system for safely and efficiently controlling a ventilation hood having at least one blower unit disposed within a hood. The blower unit operates at a first speed which is substantially below a threshold speed when a speed controller is in a first setting and a sensor does not detect a trigger condition. The blower unit also operates at or above the threshold speed when the speed controller is in a first setting and the sensor detects the trigger condition. In addition, the blower unit operates at or above the threshold speed when the speed controller is in a second setting, and deactivates when the speed controller is in a third setting.

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