Intergrated active noise control system for air handling unit

Details Intergrated active noise control system for air handling unit Intergrated active noise control system for air handling unit

1997-06-27

2000-04-11

Chang, Vivian

Electrical audio signal processing systems and devices

Acoustical noise or sound cancellation

From appliance

381336, A61F 1106

Patent

active

060496150

ABSTRACT:
The internal fan arrangement of an AHU is reconfigured by discharging directly from the scroll into a 90.degree. elbow. The bend of the elbow defines a converging section terminating in a throat which leads to a diverging section. Additionally, the ANC structure is located in the elbow with the noise sensing microphones being located at or near the fan outlet.

REFERENCES:
patent: 5499423 (1996-03-01), Joo et al.

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