Combustion air fan

Details Combustion air fan Combustion air fan

1982-12-06

1984-03-27

Marcus, Stephen

Rotary kinetic fluid motors or pumps

With means for re-entry of working fluid to blade set

415 53R, 415 53T, 415213T, 415152A, F01D 1700

Patent

active

044390955

ABSTRACT:
A fan, especially for the conveyance of the combustion air in a motor vehicle heating system, provides for adjusting of its output, with an efficiency that is as high as possible, and little operating noise. The fan, which preferably is a ring-duct fan, has a by-pass duct connected in by-passing relationship to the exit of the fan, with the by-pass duct containing an adjustable throttling member. In accordance with a preferred embodiment, the by-pass duct leads back into the intake duct of the fan.

REFERENCES:
patent: 1382665 (1921-06-01), Myers
patent: 3356034 (1967-12-01), Knowles
patent: 3972642 (1976-08-01), Fricke

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