| 发明名称 |
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| 摘要 |
1514584 Silencing axial-flow fans SASAKURA ENG CO Ltd 27 Oct 1975 [5 Nov 1974] 44185/75 Headings FIB and F1C A noise-absorbing casing ring 1 dimensional to surround the blades 3 of an axial-flow fan comprises a hollow structure having inner and outer circumferential walls 6, 8 enclosing sound-absorbing material 7 (such as glass wool, rock wool, steel wool or nylon or other synthetic fibre), loss of the material through numerous small bores 5 being prevented by a porous protective layer 16. The layer 16 may be of glass cloth, synthetic fibre net or metallic net or may be of stainless steel wool (which additionally acts as a sound absorber). |
| 申请公布号 |
DE2548999(B2) |
申请公布日期 |
1978.12.14 |
| 申请号 |
DE19752548999 |
申请日期 |
1975.11.03 |
| 申请人 |
SASAKURA ENGINEERING CO., LTD., OSAKA (JAPAN) |
发明人 |
MINAMI, KUNIHIKO, TAKATSUKI, OSAKA (JAPAN) |
| 分类号 |
F01N1/24;F01N13/00;F01N99/00;F04D29/66;F24F7/007;F28C1/10 |
主分类号 |
F01N1/24 |
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