REINRAUMKABINE

PCT No. PCT/CH82/00035 Sec. 371 Date Nov. 5, 1982 Sec. 102(e) Date Nov. 5, 1982 PCT Filed Mar. 5, 1982 PCT Pub. No. WO82/03114 PCT Pub. Date Sep. 16, 1982.A clean-room chamber designed as a walkable clean-room cabin (1) has a front wall (7) with an entrance (13). A machine, e.g. a tablet press (41) is placed in the cabin. Above the entrance (13), a vertically adjustable air-supply member (17) for the formation of an air-curtain (71) is arranged. On the ceiling (11) of the cabin (1), in its front part, an air-supply member (29) with an outlet that is vertically adjustable and may be swung around a horizontal axis of rotation that is parallel to the front wall (7), has been mounted. With the aid of that outlet, a dust-displacement current is generated that is directed toward the machine (41) and but slightly turbulent. In the lower part of the rear wall (9), an exhaust device (43) has been mounted that is connected with the inputs of two blowers (27), the outputs of which are connected with the air-supply members (17, 29), while the air is filtered by means of high-performance mechanical filters (25 ) before being fed into the cabin. The aspirating surface (45) of the exhaust member (43) has been provided, in the air shadow of the machine (41) with a covering or recess that is impermeable to air. The cabin (1) makes it possible to keep the dust concentration of the air around the machine (41) low, at a low energy expenditure.