Column fan unit

An air handling system for use in a multiple storey building in order to supply air to one level of said building, said system comprising, in combination:

• an outlet attenuator adapted for mounting on a floor of said building and including an exterior outlet housing having an air inlet in a top thereof and a lowermost air outlet in at least one vertical side thereof, said air inlet and said air outlet being connected by a lower airflow passageway defined by interior walls of said outlet attenuator, said outlet attenuator further including sound absorbing material which is contained in said housing and extends to and is covered by said interior walls;
• an axial fan unit mounted above said outlet attenuator and capable of providing downward airflow into said air inlet of the outlet attenuator;
• and
• a fan inlet section mounted above said axial fan unit and extending upwardly therefrom, said inlet section including an exterior inlet housing with a bottom air outlet in a bottom end thereof and an upper airflow passageway that extends downwardly to said bottom air outlet, said bottom air outlet being positioned directly above an airflow inlet of said fan unit,
• wherein said fan inlet section includes first and second air inlet openings in said inlet housing and an air mixing chamber adjacent said air inlet openings, said first air inlet opening being adapted to receive fresh incoming air and said second air inlet opening being adapted to receive return air from an interior region of said one level of the building.

An air handling system for use in a building in order to supply an air mixture to said building, said system comprising, in combination:

• an air outlet section adapted for mounting on a floor of said building and including an outlet housing and a lower airflow passageway extending vertically through said outlet housing to a lowermost air outlet located in at least one vertical side thereof,
• an axial fan unit mountable above said air outlet section and capable of providing downward airflow into said lower airflow passageway;
• and
• an air inlet section mounted above said axial fan unit and including an inlet housing with a round bottom air outlet in a bottom end thereof and a funnel-shaped upper airflow passageway that extends downwardly to said bottom air outlet, said bottom air outlet being connected so as to deliver a mixed airflow to an inlet of said axial fan unit, said inlet housing having first and second air inlet openings and forming an air mixing chamber arranged to receive airflows entering through said inlet openings, said first air inlet opening adapted to receive fresh incoming air and said second air inlet opening adapted to receive return air from said building,
• wherein said air inlet section has at least one air filtration device mounted therein.

An air handling system for use in a building in order to supply conditioned air to said building, said system comprising, in combination:

• an air outlet section adapted for mounting on a floor of said building and including an outlet housing and a lower airflow passageway extending vertically and outwardly through said outlet housing to a lowermost air outlet located in at least one vertical side thereof;
• an axial fan unit mountable above said air outlet section and capable of providing downward airflow into said lower airflow passageway;
• and
• an air inlet section mounted above said axial fan unit and including an inlet housing with a round bottom air outlet in a bottom end thereof and an upper airflow passageway that extends downwardly to said bottom air outlet and that has at least a section thereof tapering downwardly and inwardly, said bottom air outlet being connected so as to deliver conditioned air to an inlet of said axial fan unit, said inlet housing having at least first and second air inlet openings located respectively in at least first and second sides of said air inlet section, at least one of said air inlet openings adapted to receive return air from said building,
• wherein said air inlet section has at least one air filtration device and at least one heat exchanging coil unit for conditioning said return air mounted in said air inlet section for passage of incoming air flow therethrough.