| 摘要 |
PURPOSE: A ventilator fixed to window frame is provided to supply fresh cool air by filtering the inhaled air and heat-exchanging using a heat exchanger which is mounted on the ventilator. CONSTITUTION: A ventilator fixed to window frame comprises a main body(10), a first suction fan(20), a heat exchanger(30), a filter element(40), and an exhaust fan(50). The first suction fan is installed in the inner side of the inhalation hole and sucks the external air into the installation space by force. The filter element purifies the air inhaled through the inhalation hole and is installed in the installation space.
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