F - Mech Eng,Light,Heat,Weapons – 24 – D
Patent
F - Mech Eng,Light,Heat,Weapons
24
D
F24D 15/02 (2006.01)
Patent
CA 2120973
Conventional methods of providing heating to buildings under construction typi- cally comprises the use of portable propane powered forced air heaters. Such conven- tional systems utilize a fan motor to direct the exhaust products of combustion to the worksite. The exhaust fumes from such heaters may cause headaches and/or nausea in workers exposed to the fumes for extended periods. In addition the open flame aspect associated with such heaters make their use in potentially explosive environments im- possible. A more desirable device makes use of an efficient heat exchanger system to produce a stream of substantially odor free heated air. The device comprises a heat exchanger constructed from a pair of back to back ribbed cones with an axially dis- posed exhaust plenum at one end and a means for mounting a conventional burner, axially disposed, at the other end. The heat exchanger is enshrouded in a generally spherical shaped outer enclosure and outside air fan forced into the rear of the shroud and over the heat exchanger surface. The outside air, thus heated, is directed through the front of the shroud and may be utilized directly or conveyed to a remote site by conventional ducting. The heated air thus produced is free from exhaust contaminants and substantially odor free. The exhaust gases may, in turn, be used as a source of radiated heat prior to venting to the atmosphere. The nature of the device is such that there is no open flame and the device may thus be rendered suitable for use in an explosive environment with relatively little modification.
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