HEAT EXCHANGE TYPE VENTILATOR

摘要

A heat exchange type ventilator enabling a reduction in the size of a device body, comprising a box (1) installed on the surface of a ceiling, having an opening part (1A) in the lower surface thereof, and having a cross section of square shape. A large number of exhaust flow passages (22) and intake flow passages (21) are alternately stacked on each other in the depth direction of the box body (1) so that the exhaust flow passages (22) and the intake flow passages (21) are allowed to cross each other through heat exchange boards. The box also comprises a heat exchange element (2) exchanging heat between an intake flow and an exhaust flow and an intake blower (5) communicating with the intake flow inflow surface (2d) of the heat exchange element (2). The box further comprises an exhaust blower (6) communicating with the exhaust flow outflow surface (2a) of the heat exchange element (2) and an outdoor side intake flow passage inlet (7) formed in the side face of the box on the opposite side of an indoor side intake flow passage outlet (3) on the upstream side of the intake blower (5). In addition, the box comprises, on the downstream side of the exhaust blower (6), an indoor side exhaust flow passage inlet (4) and an outdoor side exhaust flow passage outlet (8) formed in the side face of the box on the opposite side of the indoor side exhaust flow passage inlet, and the outdoor side intake flow passage inlet (7) and the outdoor side exhaust flow passage outlet (8) are positioned adjacent to each other and allowed to communicate with the inside of a bimetallic tube (10) formed by dividing the inside of the tube into two flow passages.