Enhanced air-flow blower wheel
First Claim
Patent Images
1. A blower wheel assembly comprisinga hub;
- a central plate surrounding the hub having a concave outer side and a convex inner side;
a plate rim secured to said central plate;
a plurality of spaced blower blades protruding from the inner side of said plate rim for expelling air from the inner side of said central plate outward from said blower blades; and
aperture means for enabling the passage of air from the outer side of said central plate to the inner side of said plate to permit air from the outer side to also be expelled outward from said blower blades;
whereby a single set of blower blades acts to expel air from both sides of the central plate outwardly from the blower wheel assembly.
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Accused Products
Abstract
An enhanced, air-flow convection oven is disclosed, comprising an oven chamber liner circumscribed by a thermally insulated outer oven shell with a heat source in a combustion chamber between the shell and the liner. Hot air flows from the combustion chamber and into a uniquely constructed blower wheel assembly. The blower assembly has a concave central plate configuration which creates a negative pressure behind the blower wheel assembly, inducing a flow of hot air from the back of the blower wheel assembly into the blower wheel assembly as the wheel rotates. This hot air is mixed with air from within the chamber to produce uniform heating throughout the chamber.
46 Citations
12 Claims
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1. A blower wheel assembly comprising
a hub; -
a central plate surrounding the hub having a concave outer side and a convex inner side; a plate rim secured to said central plate; a plurality of spaced blower blades protruding from the inner side of said plate rim for expelling air from the inner side of said central plate outward from said blower blades; and aperture means for enabling the passage of air from the outer side of said central plate to the inner side of said plate to permit air from the outer side to also be expelled outward from said blower blades; whereby a single set of blower blades acts to expel air from both sides of the central plate outwardly from the blower wheel assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification