| 摘要 |
PCT No. PCT/SE91/00248 Sec. 371 Date Sep. 29, 1992 Sec. 102(e) Date Sep. 29, 1992 PCT Filed Apr. 2, 1991 PCT Pub. No. WO91/14905 PCT Pub. Date Oct. 3, 1991.A method and apparatus for the mechanical ventilation and heating of a premises with improved removal of impurities from air present in the premises. At least one suction extraction device is provided for removing polluted or stale air in a region adjacent to the ceiling of the premises. Pure supply air at a temperature in the region of or exceeding the air temperature of the premises is supplied to the premises in the lower region thereof. The supply air forms a substantially horizontal and vertically narrow air jet for displacement of existing air located in a region proximate the floor. The apparatus (1) includes one low impulse device (10) and one high impulse device (20), in addition to which at least one device (31) is provided for guiding air (supply air) emitted from a fan system to the high impulse device and/or to the low impulse device. The device is operative to guide the air from the fan system to the high impulse device when the temperature of the supply air is in the region of or exceeds the temperature in the premises. |
