Stoves and furnaces – Hot-air furnaces – Compressed air
Patent
1989-06-12
1990-05-08
Kamen, Noah P.
Stoves and furnaces
Hot-air furnaces
Compressed air
126113, 126117, 165170, 165 82, 236DIG2, 236DIG3, 116DIG25, F24H 302
Patent
active
049228900
ABSTRACT:
A fuel burning furnace includes a number of energy efficient features. The furnace includes a heat exchanger in which combustion air is preheated by hot discharge gases. Diverters are provided in the heat exchanger to continually urge hot combustion gases toward the interior portions of the heat exchanger to improve its heat transfer characteristics. The furnace incorporates a number of features to determine malfunction and indicate inefficient operation. A humidification control system for the humidification or dehumidification of circulated air also is provided. The furnace also includes a blower motor system which compensates for loss of tension in driving belts and makes correction for blower speed in response to temperature variations.
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