Blower with improved impeller vanes
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsMasahiro Atarashi, Kiyoshi Sano, Shotaro Ito
Life of this patent
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Abstract
A blower includes a plurality of rotatable impeller vanes operable to impel air. The impeller vanes create an air pressure differential thereacross when rotated, and each of the impeller vanes has a porous central portion made of sintered resin material. The porous central portion has a plurality of pores therein which permit a portion of air to pass through the porous central portion from a relatively high air pressure side to a relatively low air pressure side of the impeller vanes. Each of the impeller vanes also has a non-porous portion surrounding the porous central portion. The non-porous portion is made of a solid resin material which prevents air from passing therethrough.
Claims12
A blower including a plurality of rotatable impeller vanes operable to impel air, said impeller vanes creating an air pressure differential thereacross when rotated, each of said impeller vanes comprising:
- a porous central portion made of sintered resin material, said porous central portion having a plurality of pores therein which permit a portion of air to pass through said porous central portion from a relatively high air pressure side to a relatively low air pressure side of said impeller vanes;
- and
- a non-porous portion surrounding said porous central portion, said non-porous portion being made of a solid resin material which prevents said air from passing therethrough.
An impeller vane being rotatable to impel air, said impeller vane creating an air pressure differential thereacross when rotated, said impeller vane comprising:
- a porous central portion made of sintered resin material, said porous central portion having a plurality of pores therein which permit a portion of air to pass through said porous central portion from a relatively high air pressure side to a relatively low air pressure side of said impeller vane;
- and
- a non-porous portion surrounding said porous central portion, said non-porous portion being made of a solid resin material which prevents said air from passing therethrough.
Dependencies are inferred from the claim text.