Abstract
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 walls including a peripheral wall perforated with a number of holes and facing the airflow passageway. First and second series of splitters are also provided with those in each series being spaced apart to form smaller air passageways and mounted side-by-side in a row. The second series is positioned downstream of the first series. In the outlet duct unit, the air inlet is preferably circular while the outlet is rectangular. An internal wall provides a gradual transition in the transverse cross-section of the main passageway. An imperforate diffusing baffle plate member can also be mounted in the airflow passageway to provide uniform air distribution at the outlet.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
