Makeup air tempering for grease extraction ventilator

Apparatus for supplying makeup air for a grease extraction ventilator for cooking equipment in a room, which cooking equipment produces a gaseous stream containing fumes, smoke and grease products, comprising:

• water contact means in a passage of said ventilator, said passage extending to a duct connected to means for producing suction and said passage having an intake above said cooking equipment on the underside of said ventilator, said suction pulling said gaseous stream through said intake and into engagement with said water contact means, to remove said products from said stream;
• an air chamber adjacent and in front of said ventilator passage, said chamber having a depending front wall;
• air supply means duct connected to blower means and said chamber for supplying air to said chamber;
• an adjustable discharge outlet on the underside of said chamber inwardly of said wall for directing air from said chamber toward said passage intake;
• and
• adjustable means for directing air from said chamber downwardly along said front wall on the outside thereof for passage around the lower end of said front wall for flow to said air discharged from said outlet on the underside of said chamber.

Apparatus for tempering makeup air including a grease extraction ventilator for cooking equipment in a room, which cooking equipment produces a gaseous stream containing fumes, smoke and grease products, comprising:

• water contact means in a passage of said ventilator, said passage extending to a duct connected to means for producing suction and said passage having an intake above said cooking equipment, said suction pulling said gaseous stream through said intake and into engagement with said water contact means, to remove said products from said stream;
• a first air supply duct connected to blower means for supplying air;
• means connected with said first duct for directing a first portion of air as makeup air to the area of said intake of said ventilator;
• a heat exchanger for producing heat exchange between air and water;
• pump and pipe means for supplying water from said water contact means to said heat exchanger for heat transfer;
• a second air supply duct connected to blower means and said heat exchanger for supplying a second portion of air to said heat exchanger for heat exchange with said water;
• and
• means connected to said heat exchanger for directing said second portion of air, after heat exchange, to a selected area.

In a grease extraction ventilator having a wash chamber in which grease, fumes, smoke and the like are subjected to contact with water and said water is collected in said chamber, a device for removing non-floating particles such as grease from said collected water, comprising:

• a collection pipe extending to a position adjacent the bottom of said wash chamber;
• pump means connected to said pipe for producing suction to remove water and non-floating particles from the bottom area of said wash chamber;
• a box shaped structure having an open top disposed adjacent the bottom of said wash chamber;
• drain means connected to said box for draining water and its contents from said box;
• and
• a return pipe connected to said pump for discharging water and non-floating particles into said box.