Kitchen ventilator and associated control method

A kitchen ventilator, comprising:

• a hood structure at least partially defining an interior of the ventilator, and including an air inlet slot;
• and
• a multi-position damper baffle within the hood structure and movably positioned adjacent the air inlet slot for movement between:
• (i) an exhaust cycle position in which the damper baffle allows air to flow through the hood structure;
• (ii) a wash cycle position in which the damper baffle closes off the air inlet slot;
• and
• (iii) a fire cycle position in which the damper baffle divides the hood structure into an upper section and a lower section;
• a damper control operatively connected to move the damper baffle, the damper control operable in each of an exhaust cycle mode, a wash cycle mode and a fire cycle mode, when in the exhaust cycle mode the damper control moves the damper baffle to the wash cycle position, when in the wash cycle mode the damper control moves the damper baffle to wash cycle position, when in the fire cycle mode the damper control moves the damper baffle to the fire cycle position.

A kitchen ventilator, comprising:

• a hood structure at least partially defining an interior of the ventilator, and including an air inlet slot;
• and
• a multi-position damper baffle within the hood structure and movably positioned adjacent the air inlet slot for movement between:
• (i) an exhaust cycle position in which the damper baffle allows air to flow through the hood structure;
• (ii) a wash cycle position in which the damper baffle closes off the air inlet slot;
• and
• (iii) a fire cycle position in which the damper baffle divides the hood structure into an upper section and a lower section;
• a motor operatively connected for controlling movement of the damper baffle;
• at least one manifold positioned within the hood structure, at least one flow control element for controlling delivery of water to the manifold, the manifold having at least one outlet for introducing water to the interior of the ventilator when water is delivered by the flow control element;
• at least one exhaust fan for drawing air into the air inlet;
• a controller connected to each of the motor, the flow control element and the exhaust fan for control thereof;
• and
• wherein the controller is operable in a wash cycle mode in which the controller positions the damper baffle in the wash cycle position, turns off the exhaust fan, and effects water delivery by the flow control element.