发明名称 |
Muffler for impeller with rearwardly curved blades |
摘要 |
A high speed centrifugal air impeller assembly with rearwardly curved blades has it impeller backplate directly cooperating with an adjacent housing wall portion to provide a narrow annular sound attenuating passageway from an impeller chamber to a motor and discharge chamber.
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申请公布号 |
US2005074326(A1) |
申请公布日期 |
2005.04.07 |
申请号 |
US20040952890 |
申请日期 |
2004.09.28 |
申请人 |
TORRINGTON RESEARCH COMPANY |
发明人 |
CURTIS DAVID A. |
分类号 |
F04D29/28;F04D29/66;(IPC1-7):F01D5/10 |
主分类号 |
F04D29/28 |
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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