HEAT EXCHANGE TYPE VENTILATION DEVICE

PROBLEM TO BE SOLVED: To provide a heat exchange type ventilation device that prevents dew condensation or freezing of a heat exchange element and can maintain a ventilation amount while suppressing excessive protection.SOLUTION: The heat exchange type ventilation device includes: a supply air upstream temperature sensor 14 and a supply air downstream temperature sensor 17 respectively positioned upstream and downstream of a heat exchange element 13 of a supply air channel 7; an exhaust upstream temperature sensor 15 and an exhaust downstream temperature sensor 16 respectively positioned upstream and downstream of the heat exchange element 13 of an exhaust air channel 8; and a control part 28 that determines occurrence of dew condensation when comparing a temperature difference between supply air and exhaust air and the differences are not equal to each other.SELECTED DRAWING: Figure 1 【課題】熱交換素子の結露或いは凍結を防ぎ、過剰な保護を抑制しつつ、換気量を維持することができる熱交換型換気装置を提供することを目的とする。【解決手段】給気風路７において熱交換素子１３の上流側に給気上流温度センサー１４と下流側に給気下流温度センサー１７と、排気風路８において熱交換素子１３の上流側に排気上流温度センサー１５と下流側に排気下流温度センサー１６を備え、給排気の温度差を比較し等しくない場合には結露すると判断する制御部２８を備える。【選択図】図１