FLOOR TYPE HEAT EXCHANGE TYPE VENTILATION FAN

PROBLEM TO BE SOLVED: To solve a problem that a conventional heat exchange type ventilation fan requires many spaces for connecting a duct to a duct connection port.SOLUTION: In this exchange type ventilation fan, an air supply air blower 26 is provided in the vicinity of an outlet side of an air supply air course 25, and an air exhaust air blower 36 is provided in the vicinity of an outlet side of an air exhaust air course 35. Both ends of part of the air supply air course 25 and the air exhaust air course 35 formed by dividing each of a sensible heat exchange unit 11, a desiccant type dehumidifier unit 12 and/or a desiccant type humidifier unit 13 into two sections are provided so that four air courses communicate with an outside air duct connection port 23, an air supply duct connection port 27, an air return duct connection port 33 and an air exhaust duct connection port 37 serve as part of the air supply air course 25 and the air exhaust air course 35. The outside air duct connection port 23, the air supply duct connection port 27, the air return duct connection port 33 and the air exhaust duct connection port 37 are provided on the same face of the outer face of the floor type heat exchange type ventilation fan 1.