| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem in which, in a conventional total heat exchange type ventilation device and an air conditioner, an energy-saving operation is performed by the air conditioner by comparing an indoor temperature and a condition of an indoor temperature set value only when an operation is started in large space such as an office or a factory; however, when a ventilation load increases/decreases after the start of the operation, the air amount of ventilation equipment cannot be adapted according to the load.SOLUTION: A total heat exchange type ventilation device 1, which includes a total heat exchange element 4 for exchanging heat when ventilating indoor air and outdoor air, an air supply fan motor 5 for taking in the outdoor air to indoors and an exhaust fan motor 6 for exhausting the indoor air to outdoors, includes a control unit 7 for controlling rotational frequency of the air supply fan motor 5 and the exhaust fan motor 6. The control unit 7 aims to allow a low air amount operation, to reduce power consumption, and to enhance heat exchange efficiency by changing the rotational frequency of the air supply fan motor 5 and the exhaust fan motor 6 according to the ventilation load indoors. |
