UNDERGROUND VENTILATION SYSTEM Russian patent published in 2019 - IPC E21F1/00 

FIELD: ventilation.

SUBSTANCE: invention relates to the field of municipal transport, namely to the underground ventilation system. As per the first version, underground ventilation system includes inflow and exhaust chambers equipped with fans and devices for thermodynamic air treatment installed in inflow and exhaust chambers in the form of water-air heat exchangers, which are interconnected by pipeline to common hydraulic circuit. At that, heat exchangers are connected to hydraulic circuit in parallel and before each of them there installed on the branch are circulating pumps with frequency-controlled drive controlled by change of air flow through shafts due to piston effect of moving trains. According to the second version of the device of thermodynamic treatment of air are installed in inflow and exhaust chambers in the form of water-air heat exchangers with fans, which are interconnected by pipeline into common hydraulic circuit filled with heat carrier, in which heat pumps are installed. At that, heat exchangers are connected to hydraulic circuit in series, and alternately with supply and exhaust fans, and heat pumps are installed so that their capacitors are located along heat carrier flow in front of heat exchangers with supply fans, and evaporators before heat exchangers with exhaust fans, besides, heat pumps have reversal option. According to the third version, the thermodynamic processing devices are installed in the inflow chambers in the form of air condensers, and in exhaust chambers in the form of air evaporators of reversible heat pumps of "water-air" type, at that corresponding to them hydraulic evaporators and condensers of heat pumps are included into common hydraulic circuit.

EFFECT: higher efficiency of ventilation.

5 cl, 6 dwg