Heat recovery ventilation module for ventilation of apartment and working space, has folding area profile with fold portion whose distance from starting end to terminal end is set larger than width of tape

摘要

The ventilation module has a foldable heat exchanger that is provided with a folding area profile (1) with a height of 40 mm and 70 mm. The distance between the tape and fold portion of folding area profile is set to 4 mm. The distance from starting end of fold portion to terminal end is set larger than 50% of the width of the tape (TR).