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Document Type and Number:
Japanese Patent JPH0245769
Kind Code:
B2
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.

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Inventors:
RUDEIGERU GARUTSU
RUDORUFU REINHARUTO
Application Number:
JP1801683A
Publication Date:
October 11, 1990
Filing Date:
February 04, 1983
Export Citation:
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Assignee:
WEBASTO WERK BAIER KG W
International Classes:
F04D23/00; F04D27/02; F23L5/00



 
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