POWER FREE AUTOMATIC TEMPERATURE CONTROL VENTILATING DEVICE

摘要

PURPOSE: A power free automatic temperature control ventilating device is provided to automatically ventilate air and control temperature regardless of the snow and rain by installing a rotary ventilation case. CONSTITUTION: A disk-shaped opening and closing plate is rotatably installed in a ventilator body(1). A temperature controller(4) having a shape memory alloy coil(5) is connected via a string(6). The temperature controller includes a compressive coil spring and the shape memory alloy coil. A ball connected with the lower end of the string is installed between the compressive spring and the coil. A temperature control handle is installed on the lower end of an outer case. By rotating the handle forward and backward, the acting width of the coil is controlled. A rotary ventilation case(12) is mounted in the upper portion of the ventilator body. The rotary ventilation case is rotatably supported on a rotary pillar(15).