| 摘要 |
PCT No. PCT/FI88/00199 Sec. 371 Date Sep. 18, 1989 Sec. 102(e) Date Sep. 18, 1989 PCT Filed Dec. 16, 1988 PCT Pub. No. WO89/05947 PCT Pub. Date Jun. 29, 1989.The invention relates to a method and apparatus for controlling the fresh-air, input-air, exhaust-air, waste-air and return-air flows, as well as the air pressure in the input-air duct and the air pressure in the exhaust-air duct, in an air-conditioning system which comprises at least input-air and waste-air flow meters (6, 20), input-air and exhaust-air pressure meters (12, 19), an input-air fan (5) with its air-flow control (13), a waste-air or exhaust-air fan (18) with its air-flow control (14), a fresh-air flow meter (15), a heat recovery exchanger (4), closing and control mechanisms for exhaust air and return air, coupled together as an outlet-air mechanism (10), and closing and control mechanisms for fresh air and fresh-air bypass, coupled together as an intake-air mechanism (3). The controls (13, 14) work together, and they have been fitted to act on the fans (5, 18) and mechanisms (3, 10) so that a change in one of the quanities measured will cause the adjustment of some air flow and/or mechanism (3, 10) so that the ratio (A/B) or difference (A-D) of certain air flows will be at the predetermined value, or/and that the bypass flow (F) will open or close. |
