HEATING AND VENTILATING FACILITIES FOR TRANSIT VEHICLES Russian patent published in 2008 - IPC B61D27/00 B60H1/00 

FIELD: heating.

SUBSTANCE: heating and ventilating facilities contain air ducts, distribution box, choke valve, shaft, filter, fan, heating elements. Filter is built in cylindrical case. Inlet nozzle is mounted at input of the filter. Heating elements are ring, ribbed and tandem in cylindrical aerodynamic casing head. Inlet part of distribution box contains turned round the axis. Distribution box is supplied with discharge nozzles and mounted above the doorway, and vertical air ducts symmetrically astride of the doorway. Lower part of cabin contains horizontal air ducts with longitudinal windows at the angle 31-41° in their front walls. Their back walls are designed at the angle so that ratio of end section area of air duct is 0.2-0.35 of its inlet cross-section area.

EFFECT: comfortable conditions for passengers of transit vehicle.

4 cl, 3 dwg