Muffler for blower of air ductwork supply line

Details Muffler for blower of air ductwork supply line Muffler for blower of air ductwork supply line

1988-01-15

1990-03-06

Fuller, B. R.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181225, 181229, 181238, 181252, F01N 124

Patent

active

049057898

ABSTRACT:
A muffler for minimizing the noise emanating from a blower of an air ductwork supply line, providing that the overall length of the muffler, and the insert length of the remote muffler outlet, are provided as functions of the wave length of the pitch of the whining noise caused by the blower's impeller; and the interior longitudinal wall of the muffler's end-wall are lined with sound-absorbing material.

REFERENCES:
patent: 2625234 (1953-01-01), Fina
patent: 2731194 (1956-01-01), Kent
patent: 3581494 (1971-06-01), Scheitlin
patent: 3884037 (1975-05-01), Barber et al.
patent: 4264282 (1981-04-01), Crago

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