DEVICE FOR FORCED VENTILATION OF WORKPLACES Russian patent published in 2024 - IPC E21F1/08 F24F7/04 

FIELD: ventilation.

SUBSTANCE: invention relates to a device for forced ventilation of workplaces. Device includes main air duct, fan. Device also includes a system of distributed arrangement of branch pipes. Fan is installed in the mixing chamber opposite the point of connection of the well with the mixing chamber. Fan is connected to the main air duct. Device also has a gate installed in the mixing chamber with the possibility of supplying air during winter time from the mine working to the mixing chamber. In the summer period, the shutter is in the closed position. On the main air duct there are holes in which one end of the branch pipe is installed. Other end is installed in the hole, which is made in the centre of the U-shaped air duct. Damper is installed on the branch pipe with the possibility of opening or closing. U-shaped air duct is installed above the workstation and is made in the form of a hollow cylinder. Ends of the cylinder are not connected to each other and form a slot for air supply. In the main air duct there are dampers installed after each branch pipe with U-shaped air duct, which are made with possibility of opening and closing depending on the address air supply to the working place.

EFFECT: higher efficiency of ventilation.

1 cl, 3 dwg