F - Mech Eng,Light,Heat,Weapons – 28 – D
Patent
F - Mech Eng,Light,Heat,Weapons
28
D
257/26
F28D 5/00 (2006.01) F28D 15/02 (2006.01) F28F 13/02 (2006.01) F28G 13/00 (2006.01)
Patent
CA 1270244
ABSTRACT OF THE DISCLOSURE A rotary, Perkins tube heat exchanger for processing hot contaminated gas flows emanating from appliances such as laundry driers, grain driers and the like. The case of the heat ex- changer is located relative to the rotor so as to lie in the gas flow boundary layer established by the latter. The case is provided with a boundary layer purge port in the hot gas chamber. An airfoil extends inwardly from the case into the gas flow boundary layer. It causes increased local turbulance in the boundary layer gas. It also diverts a predetermined pro- portion of the boundary layer gas and its burden or contamina- tion products out through the purge port. The boundary layer airflow cleans both the interior of the case and the rotor, even though the rotor is characterized by the presence of a multiplicity of small openings. The device thus is rendered self-cleaning and may be operated for extended periods or time without buildup of contaminants within the heat exchanger case.
528116
Conserve Resources Incorporated
Gowling Lafleur Henderson Llp
LandOfFree
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