FIELD: engines and pumps.
SUBSTANCE: radial roof fan includes impeller 1 consisting of bent blades 2 in the form of hollow spherical layer. Impeller 1 is installed on upper part of stack effect pipe with possibility of rotation around vertical axis 6. On upper base of impeller 1 on radial pins 9 there vertically installed are additional blades 8 protruding beyond the spherical zone. Blades 8 are made in the form of hollow spherical segments.
EFFECT: obtaining the required starting moment for acceleration of impeller at weak wind and improving fan capacity at moderate and strong wind.
2 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
RU2618416C1 |
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|
RU2049265C1 |
