发明名称 |
Blower with improved impeller vanes |
摘要 |
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.
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申请公布号 |
US5257902(A) |
申请公布日期 |
1993.11.02 |
申请号 |
US19920836741 |
申请日期 |
1992.02.19 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
ATARASHI, MASAHIRO;SANO, KIYOSHI;ITO, SHOTARO |
分类号 |
F04D29/02;F04D29/38;F04D29/66;(IPC1-7):F04D29/66 |
主分类号 |
F04D29/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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