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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||181/224 ; 181/238 ; 181/252|
|발명자 / 주소|
|인용정보||피인용 횟수 : 16 인용 특허 : 0|
Combined air duct apparatus and silencer for attachment to both the inlet and the outlet of a fan unit for a building wherein each silencing apparatus has an exterior housing with an air inlet and an air outlet, one of which is adapted for connection to the fan unit. The inlet and outlet are connected by an airflow passageway defined by interior walls of the housing. A resonator chamber for reducing noise created by the fan unit extends around or is adjacent to the inlet or the outlet that is connected to the fan unit. The chamber is enclosed by chamber ...
An air duct silencing apparatus for use as an inlet or outlet silencing duct to be connected to an air supply fan unit for a building or other large structure, said apparatus comprising: an exterior housing having exterior walls forming outer surfaces of said housing, an air inlet lying in a first plane, and an air outlet lying in a second plane arranged at substantial angle to said first plane, one of said inlet and said outlet being circular and adapted for connection to the fan unit for air flow to or from the fan unit and defining a central axis exte...