Air ventilation and pollution cleaning system

Details Air ventilation and pollution cleaning system Air ventilation and pollution cleaning system

1983-10-11

1984-11-27

Yeung, James C.

Stoves and furnaces

Stove hoods

55DIG36, 98 36, 98 33A, 126299E, F24C 1508, F23J 1100

Patent

active

044845634

ABSTRACT:
An air ventilation and cleaning system for cooking equipment having an exhaust hood disposed thereover in a building having a heating-ventilating and air-conditioning system for treating the air in the building. The exhaust hood includes a collection chamber and an exhaust chamber with an initial filter means mounted therebetween. An exhaust fan draws air loaded with cooking vapors, odors, fumes, smoke and other pollutants collected in the collection chamber through the filter means and the exhaust chamber, and out through an exhaust passage provided with a water-wash filter and a final filter, and then to the atmosphere. A source of fresh air provides a predetermined amount of fresh makeup air to the collection chamber. A temperature control unit is connected to another source of fresh air, and to the return air duct of the heating-ventilating and air-conditioning system of the building or a room in the building, for providing a combination of fresh air and tempered air to an air curtain passage for forming an air curtain along the front side of the exhaust hood.

REFERENCES:
patent: 3530784 (1970-09-01), Courchesne
patent: 3837269 (1974-09-01), Sweet
patent: 4129121 (1978-12-01), Dorius
patent: 4134394 (1979-01-01), Otenbaker
patent: 4153044 (1979-05-01), Nett
patent: 4346692 (1982-08-01), McCauley
patent: 4373509 (1983-02-01), Neitzel et al.

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