To reduce a manufacturing cost by standardizing the constitution of a heat exchanging ventilator of large supply air volume and a heat exchanging ventilator of large exhaust air volume.
In this heat exchanging ventilator, a supply air ventilation flue 4 and an exhaust air ventilation flue 6 are partitioned independently of each other over the whole line in a body casing 2, and a part of the exhaust air ventilation flue 6 and a part of the supply air ventilation flue 4 are formed of a primary passage and a secondary passage respectively in the body casing 2. Heat exchangers 1 for exchanging heat between fluid flowing in the primary passage and the secondary passage are built in, and the supply air ventilation flue 4 is provided with a supply air blower 3 for forming supply air flow, while the exhaust air ventilation flue 6 is provided with an exhaust air blower 5 forming exhaust air flow, to allow continuous heat exchange between the supply and exhaust air flows. The heat exchangers 1 are constituted to have the difference between the pressure loss of the primary passage and that of the secondary passage, and the primary passage and secondary passage of the heat exchangers 1 are reversed by changing the attached direction of the heat exchangers 1.
SUGIYAMA YOICHI
MATSUMOTO KOHEI
KATAYAMA YUICHI
Tadahiko Inaba
Kanako Murakami
Nakatsuru Kazutaka