Airflow Boosting Assembly for a Forced Air Circulation and Delivery System

摘要

The invention relates generally to the field of airflow boosting devices. In particular, the invention relates to a booster fan for installation into a vent opening of a duct system in a forced air circulation and delivery system. In an embodiment, the booster fan includes a register plate for covering a vent opening. An opening or openings on the register plate provide an air outlet. A housing is secured to the register plate for enclosing a crossflow fan therein. The crossflow fan is disposed adjacent and spaced from the register plate and resiliently supported at both ends. A motor is resiliently connected to the crossflow fan. The housing also has an aperture for providing an air inlet communicating with the duct system. Preferably, two arcuate air deflection panels are provided in the housing for connecting the air inlet and air outlet to form a guided air passageway.

主权项

1. An airflow boosting assembly for installation in a vent opening of a duct system in a forced air circulation and delivery system, said airflow boosting assembly comprising:
a housing, said housing being dimensioned to be smaller than the vent opening for passing therethrough; a register plate for covering said vent opening, said register plate having defined therein an air outlet; said housing having an air inlet spaced from said air outlet; a crossflow fan disposed between said air inlet and said air outlet, said crossflow fan having a rotational axis, said crossflow fan being oriented such that said rotational axis is generally parallel to said register plate, said crossflow fan having two end support members and a plurality of fan blades extending between and secured to said two end support members and a rigid blade support member disposed between said two end support members, said end support members and said rigid blade support member joining said fan blades at a location between said end support members to form a rigid structure; an elastomeric motor connector; a motor secured to said housing, said motor being connected to said crossflow fan in a driving relation through said elastomeric motor connector; an elastomeric bearing housing attached to said housing and a bearing resiliently housed in said bearing housing; said crossflow fan having a shaft rotationally supported in said bearing, said bearing housing biasing said crossflow fan toward said motor along a direction generally parallel to said rotational axis; and a control circuitry for selectively energizing said motor.