| 摘要 |
PURPOSE:To improve the responsiveness to a temperature change by setting the operating time of a motor driving an opening/closing member based on the preset temperature of a space to be cooled. CONSTITUTION:With a compartment thoroughly cooled, a cam 66 is located at 66a shown by a dashed line and is brought into contact with a moving bar 73 at the shortest distance from a rotary shaft 63, and a baffle plate 71 closes a discharge port 22a. When the temperature in the compartment is increased from this state, an output signal is generated by a comparator 77 comparing with the preset temperature, and a motor 61 is rotated. Accordingly, the cam 66 is rotated counter-clockwise, and the motor 61 is stopped after the predetermined time has elapsed. At this time, the cam 66 is brought into contact with the moving bar 73 at the longest distance from the rotary shaft 63, and the baffle plate 71 is fully opened. |
