Abstract: The regenerative heat recapturing device for the vertical insertion into a roof of a building or the like serving for the ventilation of space and recapturing of heat. It has a rotatingly drivable storage mass which is located partly in an intake air channel and partly in an exhaust air channel. Fan wheels are disposed in these channels. The storage mass is disposed in a storage mass ring through the inside space of which an exhaust air channel section and an intake air channel section lead axially which are always connected by way of a 180.degree. intermediate channel section with the channel sections of the exhaust air channel or the intake air channel containing the storage mass.

Abstract: A heat exchanger of the regenerative type comprising a rotor constructed of corrugated strip layers providing transverse channels extending therethrough. The device is arranged to have separate gas streams directed through different parts of the rotor so that on rotation of the rotor the storage mass effects the exchange of sensible heat between the streams.

Abstract: An air inlet through which supply air is blown into the room of a building or the like including at least one roller-shaped elongated blowing element, two mutually parallel disposed bearing shells between which the blowing element is mounted and at least one spring clamp. The spring clamp engages both bearing shells and retains them in assembly with the blowing element to thereby hold the blowing element in a form-fitting and positive force-transmitting manner while permitting the blowing element to pivot about its longitudinal axis. The blowing element includes walls defining a passage through which the air passes into the room. In one embodiment the walls define projections which in turn define an inlet passage for the blowing element which is narrower in width than its outlet passage.

Abstract: An air outlet through which air is supplied to the room of a building or the like which includes a plurality of blower elements arranged in at least one row, with each element being independently angularly adjustable to supply air within a range of definite blast directions. The length of each individual blower element is maximally approximately 12-25 times greater than the thickness of the outwardly flowing stream of supply air.