Method and apparatus for reducing torque on an air damper

Details Method and apparatus for reducing torque on an air damper Method and apparatus for reducing torque on an air damper

1978-09-28

1981-10-20

Rosenthal, Arnold

Valves and valve actuation

With material guide or restrictor

Baffle or zigzag flow restrictor

251305, F16K 122, F16K 4708

Patent

active

042956323

ABSTRACT:
A volume air flow controller having a butterfly damper mounted within an air duct and movable between open and closed positions employs a baffle, located upstream from the damper, as an air flow impedance to change the flow conditions upstream from the damper so as to reduce the normal damper closing torque resulting from aerodynamic forces produced by air flow past the damper.

REFERENCES:
patent: 4100938 (1978-07-01), Dravnieks et al.

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