| 摘要 |
PCT No. PCT/SE97/00153 Sec. 371 Date Aug. 21, 1998 Sec. 102(e) Date Aug. 21, 1998 PCT Filed Jan. 31, 1997 PCT Pub. No. WO97/28412 PCT Pub. Date Aug. 7, 1997A heat recovery unit comprising a case (1), which encloses at least one regenerative heat accumulator (5), whereby the casing (1) has a supply air opening (10), an exhaust air opening (15), an exterior air opening (20) and a under-air opening (25), and whereby exhaust air and supply air alternately pass through the heat accumulator (5). The heat accumulator (5) has, via a rotational movement, a valve function which opens and respectively closes the openings (10-25) when the heat accumulator (5) rotates from a first position for exhaust air throughflow to a second position for exterior air throughflow. |
