METHOD OF AIR HEAT SUPPLY OF VENTILATION IN UNDERGROUND MINES OF MINING ENTERPRISES Russian patent published in 2013 - IPC E21F1/08 

FIELD: mining.

SUBSTANCE: method includes burning of fuel and removal of combustion products along a gas line via a heat exchanger and a smoke exhaust into atmosphere. A blast fan is installed at the inlet to the heat exchanger, with the help of which in the heat exchanger and at its outlet permanent higher pressure is maintained, and heated air is sent along the line to a pre-mixing chamber. Heated air arrives into the mixing chamber along the line, and atmospheric air arrives via a controlled valve, and total flow of ventilation air is sent to a ventilation shaft. Using control, instrumentation and adjusting equipment parameters of air flows are monitored, pressure is changed, as well as temperature and flow rate of air flows. In case of emergency valves 13 and 15 are opened to atmosphere, and valves 10 and 12 are closed.

EFFECT: provision of reliable and safe operation of ventilation heat supply systems with existing ventilation arrangements under any climatic conditions and various loads.

3 cl, 1 dwg