Blower including blades attached to a boss

Details Blower including blades attached to a boss Blower including blades attached to a boss

2011-08-30

2011-08-30

Verdier, Christopher (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Tined or irregular periphery

C415S119000, C416S235000, C416S23600R, C416SDIG004

Reexamination Certificate

active

08007243

ABSTRACT:
A blower that can reduce noise and enhance efficiency by improving a blade structure of the blower used for, for example, an outdoor equipment of an air conditioner. An impeller includes plural blades attached to a peripheral surface of a boss at intervals in a peripheral direction, and a trailing edge of the blade has a protrusion-shaped part in which its central part in a radial direction is curved to expand to a suction side. With such a structure, a discharge velocity of air can be made uniform along the radial direction of the blade, and it becomes possible to reduce noise and to enhance efficiency.

REFERENCES:
patent: 6116856 (2000-09-01), Karadgy et al.
patent: 6558123 (2003-05-01), Spaggiari
patent: 1389651 (2003-01-01), None
patent: 1417481 (2003-05-01), None
patent: 1382856 (2004-01-01), None
patent: 52-81538 (1977-06-01), None
patent: 58-144698 (1983-08-01), None
patent: 2002 70504 (2002-03-01), None
patent: 2003-13892 (2003-01-01), None
patent: 2003 148395 (2003-05-01), None
patent: WO-90/13746 (1990-11-01), None
European Patent 1,382,856 dated Jan. 21, 2004 (abstract only).
Japanese Patent 58-144,698 dated Aug. 29, 1983 (abstract only).

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