Heat exchange type ventilator

Abstract

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.

Description

technical field [0001] The present invention relates to a heat exchange type ventilator for exchanging heat between indoor air and outdoor air through a double-layer duct internally divided into an exhaust flow path and an air supply path. Background technique [0002] In the prior art, as such a heat exchange type ventilator, there is known a heat exchange type ventilator that has a heat exchange element inside, performs heat exchange between indoor air and outdoor air, and reduces the energy loss of the indoor environment through ventilation. gas device (for example, Japanese Patent Application Publication No. 57-46732, with reference to Fig. 1). [0003] Such a heat exchange type ventilator divides the inside of a box-shaped main body attached to a building into an exhaust passage and an air supply passage. A blower for air supply and exhaust is provided inside the exhaust passage and the air supply passage, the rotation axis of which is horizontal to the top surface. T...

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to open two through-holes on the structure such as the wall of the building, so there is a disadvantage that the workability is poor and the airtightness of the building is impaired.

[0008] Moreover, in the latter heat exchange type ventilator, the double-layer duct that connects the interior is divided into the exhaust air path and the air supply air path, even if it overcomes the shortcomings of the construction and the airtightness of the building, because the double The exhaust air path and air supply air path of the layer duct must be connected with the exhaust air blower and air supply air blower respectively, so that the overall size of the device will also increase

In addition, the resistance of the air supply passage and the exhaust passage increases, and there is still a disadvantage that the ventilation performance of simultaneous supply and exhaust cannot be sufficiently obtained.

Images