Noiseless air flow device and method

Details Noiseless air flow device and method Noiseless air flow device and method

1975-02-19

1979-01-02

Wayner, William E.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

181296, 181 56, 181224, 98 32, F24F 700, F24F 1308

Patent

active

041321596

ABSTRACT:
For obtaining a noiseless or substantially noiseless process of a flow passing through a throttle or damper device, the flow is given a speed increase with increasing acceleration in the direction of flow. Further, at least a substantial part of the dynamic component of the energy state of the flow is quenched within or immediately after the device by means of a counter-directed flow having a similar dynamic component. The invention also concerns a throttle or damper device for such a noiseless or substantially noiseless process of a flow.

REFERENCES:
patent: 1032794 (1912-07-01), Wolf
patent: 2185198 (1940-01-01), Huggins
patent: 2278581 (1942-04-01), Dexter
patent: 2654305 (1953-10-01), Robertson
patent: 3388769 (1968-06-01), Martoia
patent: 3577904 (1971-05-01), Lambert
patent: 3660979 (1972-05-01), Kamakura
patent: 3726202 (1973-04-01), Ahlberg
patent: 3802327 (1974-04-01), Otsuka

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