发明名称 |
CENTRIFUGAL FAN ASSEMBLY FOR ROAD SWEEPING MACHINES |
摘要 |
The invention is directed to a centrifugal fan (19) for the debris collection arrangement (100) of a road cleaning machine (10). The assembly (19) comprises a casing (101), a rotatable impeller (103) and a wall (107). The casing (101) comprises a volute potion (30) connected to an outlet passageway (31), a corner (106) being formed therebetween. The impeller (103) comprises a plurality of blades (25) and is located in the volute portion (30) proximate the corner (106). The wall (107) separates the outlet passageway (31) into a first and second passageway (36, 37) and extends to an inner end (102) proximate the impeller (103). The inner end (102) is positioned, and the impeller (103) is arranged, such that when a blade (25) passes the inner end (102) a second pressure wave is formed that destructively interferes with a first pressure wave formed by a blade (25) passing the corner (106). |
申请公布号 |
WO2015140546(A1) |
申请公布日期 |
2015.09.24 |
申请号 |
WO2015GB50789 |
申请日期 |
2015.03.18 |
申请人 |
JOHNSTON SWEEPERS LIMITED |
发明人 |
KNOPP, GARETH;SANDFORD, MICHAEL;CATCHPOLE, STEPHEN |
分类号 |
F04D17/16;E01H1/08;F04D29/42;F04D29/66 |
主分类号 |
F04D17/16 |
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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