SUPPLY AND EXHAUST VENTILATION DEVICE

摘要

In order to efficiently exchange indoor air and outdoor air, to reduce power consumption, and to reduce discomfort to a user, damper, which switches between a heat exchange exhaust air path and a normal ventilation air path, is provided in an exhaust air path. In addition, a discomfort index is calculated from detection results of indoor temperature sensor provided on indoor-side inlet and outdoor temperature sensor provided on outdoor-side inlet. Further, controller, which switches between the heat exchange exhaust air path and the normal ventilation air path so as not to cause discomfort to the user, is provided to control damper.

主权项

1. A supply and exhaust ventilation device comprising:
a main body provided with an indoor-side inlet, an indoor-side outlet, an outdoor-side inlet, and an outdoor-side outlet, and the supply and exhaust ventilation device comprising, in the main body: a supply air path which communicates outdoor air from the outdoor-side inlet to the indoor-side outlet; an exhaust air path which communicates indoor air from the indoor-side inlet to the outdoor-side outlet; a heat exchange element which is disposed on a crossover part of the supply air path and the exhaust air path and exchanges heat of the outdoor air and heat of the indoor air; an air supply fan disposed in the supply air path and an air exhaust fan disposed in the exhaust air path; an air supply motor which drives the air supply fan; and an air exhaust motor which drives the air exhaust fan, wherein the exhaust air path comprises:
a heat exchange exhaust air path which exhausts air via the heat exchange element;a normal ventilation air path which exhausts air not via the heat exchange element; anda damper which switches between the heat exchange exhaust air path and the normal ventilation air path, the indoor-side inlet is provided with an indoor temperature sensor which detects an indoor temperature, the outdoor-side inlet is provided with an outdoor temperature sensor which detects an outdoor temperature, the supply and exhaust ventilation device farther comprises a controller which controls the air supply motor, the air exhaust motor, and the damper, the controller comprises a damper controller which drives the damper, when the damper controller determines that the indoor temperature detected by the indoor temperature sensor and the outdoor temperature detected by the outdoor temperature sensor are both in a comfortable temperature range for a human body, the damper controller causes the damper to switch the exhaust air path to the normal ventilation air path, and when the damper controller determines that one of the indoor temperature and the outdoor temperature is out of the comfortable temperature range for the human body, the damper controller causes the damper to switch the exhaust air path to the heat exchange exhaust air path.