FIELD: ventilation.
SUBSTANCE: method of outgoing air flow temperature control in blowing devices consists in charging of air in channel of air blowing device, in which electric heating elements are installed, which communicate to the source of their power supply, and passage of this air flow through mentioned electric heating elements. As electric heating elements semi-conductor resistors are used with positive temperature coefficient, temperature of outgoing air is controlled with turn of semi-conductor resistors at the angle from 0° to 90° in relation to direction of air flow or with the help of relief air valve, sending part of charged air along bypass channel in zone behind semi-conductor resistors. Such arrangement will make it possible to increase affordability and efficiency of heating.
EFFECT: higher affordability and efficiency of heating.
6 dwg, 2 cl
