Central air freshener

Details Central air freshener Central air freshener

1997-08-13

1999-10-26

Woo, Jay H.

Gas and liquid contact apparatus

Fluid distribution

Valved

261DIG65, 422123, A62B 1100

Patent

active

059713674

ABSTRACT:
A bypass is provided between the hot air pipes carrying heated air from a furnace and a cold air pipe carrying the return air to the furnace. A certain percentage of the air thus is bypassed. A scented pellet is provided in the bypass and is heated when the air is heated, and thereby evaporates a scent into the air. (It will evaporate scent when the air is cold, also.) Passage of the scent to the cold air pipe insures that it is heated again by the combustion chamber of the furnace, and the scent thereby is fairly evaporated and spread through the heating system.

REFERENCES:
patent: 3419217 (1968-12-01), White et al.
patent: 4067692 (1978-01-01), Farris
patent: 4303617 (1981-12-01), Bryson
patent: 5019352 (1991-05-01), Gonzalez

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