Air supply device

DETAILED DESCRIPTION In new airtight well insulated houses a very small amount of additional heat from the heating system is needed.
The present invention is based on the principle that this amount of additional heat can be supplied to the ventilating air in a ventilating system supplying and removing air.
The device according to the invention is advantageous in that it supplies heat to the ventilating air as well as heat to cover the transmission losses.
In this way the radiator system can be dispensed with which lowers the building costs.
Thus, the present invention provides improved comfort at the same time as the installation costs are reduced considerably.
The air blower means is preferably located along the whole outer front of the room or flat in order to spread the heated air uniformly and attain a complete degree of ventilation.
This location also prevents a possible so-called cold fall from the windows.
The air is blown into the room with such low impulse that dust and similar particles are not carried along by the air stream, which corresponds to an air flow velocity in the range of 0.
2-0.
8 m/s.
The air blown into the room is then preferably forwarded in the flat by means of special upper air means which are located in partition walls about 0.
5 m above the floor.
In accordance with an advantageous further development of the device according to the invention said duct is connected to the apparatus for conditioning air by a pressure box mounted in the wall of the room, which box serves to equalize the supply pressure and eliminate turbulence in the air flow.
In accordance with another advantageous embodiment of the device according to the invention the air supply system consists of a ventilating system which by a central apparatus transports ventilating air having a basic temperature, preferably about 15.
degree.
C.
, in winter time, to a hot air apparatus in each flat, the temperature of which can be controlled individually, suitably by means of an automatic temperature regulator