Stoves and furnaces – Hot-air furnaces – Air baffles
Patent
1989-05-24
1990-11-06
Jones, Larry
Stoves and furnaces
Hot-air furnaces
Air baffles
126110R, 126116B, 237 48, F24H 300
Patent
active
049677268
ABSTRACT:
A heating and ventilation unit has a ceramic heat wheel rotatable within a housing between first and second plenums through which fresh and stale air, respectively, are forced to pass in a hot air ventilation system. The heat wheel is made of cordierite material such as is used in catalytic conversion systems for automobiles. It is formed with non-communicating and axially-extending parallel pores having a pore density of 62 pores per sq. cm. As it rotates the heat wheel transfers to the fresh air both the heat generated by a gas burner in the second plenum, and also low grate heat contained in the stale air. The burner is housed within a combustion housing by means of which the combustion gases are confined to a generally D-shaped area of the heat wheel. The combustion housing is spaced from the walls of the second plenum to form an annular passage through which unheated stale air passes to cool the walls of the second plenum and purge any combustion gases from the pores of the heat wheel entering the first plenum. Humidification of the fresh air may be achieved by water sprayed onto the upstream surface of the heat wheel in the first plenum.
REFERENCES:
patent: 3401740 (1968-09-01), Trudeau
patent: 3695250 (1972-10-01), Rohrs et al.
patent: 4497361 (1985-02-01), Hajicek
patent: 4542782 (1985-09-01), Berner
patent: 4836183 (1989-06-01), Okuno et al.
Jones Larry
Stelrad Group Limited
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