FIELD: mining industry; applicable in ventilation of mines and transportation tunnels. SUBSTANCE: mine ventilation plant has working and standby fans. Each fan has a diffuser with turning elbow, electric motor connected with a fan by transmission shaft with the help of jaw clutcher, and inlet and outlet boxes. Attached to lower part of side faces of outlet boxes are diffuser collapsible turning elbows with louver doors. EFFECT: reduced cost, prevented frosting-up at subzero temperatures of atmospheric air and reduced noise. 2 cl, 5 dwg
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|---|---|---|---|
| SHAFT VENTILATOR PLANT | 2002 |
|
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RU2462594C1 |
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RU2168072C2 |
| AXIAL-FLOW FAN | 2002 |
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RU2219376C2 |
| AXIAL-FLOW FAN | 2002 |
|
RU2225537C2 |
