Abstract: Air distribution device (4) provided with an inlet opening (5a) and at least one outlet opening (8) for conveyance of air from a fresh air area (21) to at least one ventilation area (24) in an air volume (LV) limited by floor (1), walls (2) and ceiling (3), said fresh air area (21) being situated along the floor in the air volume (LV), the distribution device (4) being arranged to locally supply fresh air from the fresh air area (21) to a near zone of the respiratory organ of an individual in the air volume (LV).

Abstract: A wall-mounted supply-air device comprising an upper valve part connected to an upper edge of an aperture in a primary wall side and a lower valve part connected to a lower edge of the aperture in the wall side, the supply air to the device being arranged to be supplied downwardly to the inlet side of the device, between the primary wall side and a secondary wall side in connection with the primary wall side.

Abstract: A wall-mounted supply-air device comprising an upper valve part (9) connected to an upper edge (5) of an aperture (4) in a primary wall side (11) and a lower valve part (10) connected to a lower edge of the aperture (4) in the wall side (11), the supply air to the device being arranged to be supplied downwardly to the inlet side of the device, between the primary wall side (11) and a secondary wall side (12) in connection with the primary wall side.

Abstract: A dual-channel mixing box (1) is arranged in series with other such mixing boxes in order to regulate the temperature of the air in one room each or in several rooms. Each mixing box is provided with supply pipes (3,4) running through it, in which air of different temperatures flows. Each supply pipe is provided with a damper (5), the dampers in a mixing box (1) being adjustable by means of a motor-operated rod (6) so that when one damper is moved in closing direction, the other damper is moved in opening direction, and vice versa. A mixing chamber (11) for the air from both supply pipes is formed between the supply pipes (3,4). The mixing chamber is in controllable communication with one or two outlet chambers (12) communicating through pipes with the room(s) in which the temperature is to be regulated via the mixing box in order to supply a mixture of air with the desired temperature.

Abstract: A heat exchanger, preferably intended for air conditioning in a fan installation, comprises a corrugated plastic element built up of heat exchanger packs. One of the air flows passes laminarly and unbroken in vertical flow paths formed between strips that hold the individual elements apart from each other. The other air flow passes through channels formed in each element. The walls of the element are thin and the thinner the wall thickness the better the efficiency obtained.

Abstract: When introducing supply air into a treated space (A), the supply air is conveyed from a source (B) of supply air by way of a terminal device (10) opening into the treated space, the supply air being discharged from the terminal device (10) with a certain momentum substantially vertically and downwardly along an upstanding surface (E) defining the treated space. In a supply air terminal device for introducing the supply air the air passageway (13) between the supply air intake and the supply air outlet is elongate, and the terminal device (10) is adapted to be mounted in a vertical position on an upstanding surface (E) defining the ventilated space (A) with the supply air outlet directed downwardly and positioned adjacent said defining surface.