Silencing equipment for electric devices

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United States of America Patent

PATENT NO 8485310
SERIAL NO

13044133

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Abstract

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Silencing equipment provided with one or more flow channels through which cooling air flows has a flow channel forming member that forms the flow channel, and an acoustic absorbent member that is fixed to the flow channel forming member. A resonance type silencer is formed on a wall surface of the flow channel by providing a cavity for the resonance type silencer in the acoustic absorbent member and an aperture for the resonance type silencer in a portion of the flow channel forming member. The resonance type silencer sets a frequency of noise necessary to be reduced based on a peak frequency of noise generated by a fan. The silencing equipment further has a slide member which slides by a slide mechanism to adjust the area of the top of the aperture. The silencing equipment for electronic devices capable of cooling heat generating sections thereof with air has a small and simple structure and can improve a silencing effect by blowing air.

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Patent Owner(s)

Patent OwnerAddress
HITACHI LTD6-6 MARUNOUCHI 1-CHOME CHIYODA-KU TOKYO 100-8280

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Goto, Akira Isehara, JP 147 2078
Idei, Akio Hadano, JP 23 576
Tanabe, Yosuke Hitachinaka, JP 25 112
Tsubaki, Shigeyasu Odawara, JP 18 376
Usui, Masahiko Kawasaki, JP 5 53
Watanabe, Masanori Hitachinaka, JP 185 2883

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