发明名称 |
OVERGANGSKANAL TIL EN CENTRIFUGALBLAESER |
摘要 |
<p>The present invention provides a curvilinear transition duct (10) for use with a centrifugal fan (40) that affords optimal fan efficiency without undue duct length. The duct comprises a top section (12) of generally concave planar shape when viewed from above and a bottom section (14). Side sections join the top and bottom sections to form a four sided structure having an inlet opening (20) at one side and an outlet opening at the other side (22). The top plate (12) is arranged to have a positive angle of expansion (DT) whilst the bottom plate (14) may be arranged to have a zero angle of expansion or a positive angle of expansion (DB) less than that of the top plate (12) such that the duct gradually diverges in the same direction as fan housing scroll development.</p> |
申请公布号 |
DK557689(D0) |
申请公布日期 |
1989.11.08 |
申请号 |
DK19890005576 |
申请日期 |
1989.11.08 |
申请人 |
BALTIMORE AIRCOIL COMPANY, INC. |
发明人 |
KAPLAN, VLADIMIR;HARRISON, RICHARD H. |
分类号 |
F04D29/44;B01D47/00;E04F;F04D;F04D7/08;F04D29/00;F04D29/42;F04D29/46;F15D1/02;F16L25/00;F24F;F24F5/00;F24F13/02;F25D17/00;F28C1/02;F28F25/00;F28F25/12;(IPC1-7):F04D29/44 |
主分类号 |
F04D29/44 |
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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