Patent ID: 6169849
Filing Date: 2001-01-02
Classification: F24D,F24F,H05B,Y02B

Abstract:
A ventilation-heating apparatus comprising: a fresh air passage which opens into a room-side inflow air supply opening;a room air passage which opens into a room-side air removal outlet opening,a heat exchanger through which the fresh air and room air passages pass through to transfer heat from the room air passage to the fresh air passage; a first heating element provided in the fresh air passage; a second heating element provided in the fresh air passage, the second heating element being operable to selectively switch on or off; a fresh air ventilation means disposed in the fresh air passage downstream of the heat exchanger in a flow direction of the fresh air passage; a room air ventilation means disposed in the room air passage; and a control and regulation unit operatively coupled with the first and second heating elements and with the fresh air and room air ventilation means, wherein when the second heating element is switched on, the fresh air ventilation means is automatically controlled by the control and regulation unit to operate at a higher speed of rotation than a speed when the second heating element is switched off.