HEAT EXCHANGE VENTILATOR

PROBLEM TO BE SOLVED: To provide a heat exchange ventilator having a damper mechanism capable of facilitating maintenance work.SOLUTION: A heat exchange ventilator of this invention includes a body casing having an exhaust air passage and an air supply passage formed in an inside thereof, a heat exchange element exchanging heat between an exhaust air flow and an air supply flow, and a blower provided on the downstream side of the heat exchange element at least in one of the exhaust air passage and the air supply passage. The heat exchange ventilator further includes walls 51 and 52 vertically provided on a blower casing 50 in such a manner of facing each other while having an inlet port 42 formed on the blower casing 50 of the blower therebetween, and a damper 8 rotating around a rotating axis 8a extended from the one wall 51 to the other wall 52. The exhaust air passage or the air supply passage is merged from one side across the rotating axis 8a, a merging passage different from the exhaust air passage or the air supply passage is merged from the other side across the rotating axis 8a, and the damper 8 can vary an amount of air sucked from the exhaust air passage or the air supply passage to the blower and an amount of air sucked from the merging passage to the blower. 【課題】維持管理のしやすいダンパ機構を備える熱交換換気装置を得ること。【解決手段】本発明は、排気風路と、給気風路とが内部に形成された本体ケーシングと、排気流と給気流との間で熱交換させる熱交換素子と、排気風路および給気風路の少なくとも一方で熱交換素子の下流側に設けられた送風機と、を備え、送風機の送風機ケーシング５０に形成された吸込口４２を挟んで、互いに対向するように送風機ケーシング５０に立設された壁部５１，５２と、一方の壁部５１から他方の壁部５２に向けて延びる回転軸８ａを中心に回転するダンパ８と、を備え、回転軸８ａを挟んだ一方側から排気風路または給気風路が合流し、回転軸８ａを挟んだ他方側から排気風路および給気風路とは異なる合流風路が合流し、ダンパ８は、排気風路または給気風路から送風機に吸い込まれる風量と、合流風路から送風機に吸い込まれる風量を可変とする。【選択図】図１２