Low frequency noise and turbulence reducer

Details Low frequency noise and turbulence reducer Low frequency noise and turbulence reducer

1986-04-28

1988-02-23

Rosenthal, Arnold

Valves and valve actuation

With material guide or restrictor

Baffle or zigzag flow restrictor

251298, 181258, 98 382, F16K 4702

Patent

active

047265639

ABSTRACT:
Low frequency noise and turbulence are reduced in a damper structure by providing a perforate screen extension onto the damper blade so as to extend across the flow path when the damper is open. Additionally, a perforate screen is located immediately downstream of the damper and spaced from the wall so as to define a chamber therewith as well as defining a boundary of the flow path.

REFERENCES:
patent: 1365847 (1921-01-01), Pelton
patent: 3283694 (1966-11-01), Dean, Jr.
patent: 3669349 (1972-06-01), Hall, Jr.
patent: 3699871 (1972-10-01), Larkfeldt
patent: 3750839 (1973-08-01), McNabney
patent: 4100938 (1978-07-01), Dravnieks et al.
patent: 4258877 (1981-03-01), White

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