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US 2012/0257957 A1Published application
Counter-rotating axial flow fan
AssigneeSanyo Denki Co., Ltd.
InventorsAtsushi Yanagisawa, Honami Oosawa
Life of this patent
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Abstract
Provided here is a counter-rotating axial flow fan with improved air flow-static pressure characteristics and reduced power consumption and noise compared to the related art. A plurality of struts are disposed to be stationary between a front impeller and a rear impeller in an air channel. A plurality of front blades are each formed of a swept-back blade, and a plurality of rear blades are each formed of a forward-swept blade.
Claims6
A counter-rotating axial flow fan comprising:
- a casing including an air channel having a suction port at one axial end of the air channel and a discharge port at the other axial end of the air channel;
- a front impeller including a plurality of front blades and configured to rotate in the air channel;
- a rear impeller including a plurality of rear blades and configured to rotate in the air channel in a direction opposite to a direction of rotation of the front impeller;
- and
- a plurality of struts disposed to be stationary between the front impeller and the rear impeller in the air channel, wherein
- the plurality of front blades are each formed of a swept-back blade, and the plurality of rear blades are each formed of a forward-swept blade.
3 more elements
Dependencies are inferred from the claim text.