Most of today’s refrigerator refrigeration methods have abandoned direct cooling and adopted air-cooled methods, and air-cooled refrigerators are not without the core component of the electric damper. The electric damper is mainly composed of stepper motor, transmission mechanism, door plate and door frame. As an executive element of air volume control, the refrigerator damper motor is powered on, and a baffle in a rectangular frame is driven by a set of gear reduction transmission mechanism, and the opening of the baffle is controlled by the positive and negative rotation of the stepper motor and the number of pulse steps. When the electric damper is open, the cold air enters the controlled room through the air channel through the electric damper hole, and the cold air in each room forms convection through the air channel to achieve the cooling effect. The electric damper is closed and the air flow is cut off. In order to control the cold air flow of the refrigerator cold room, this is the working principle of the refrigerator damper motor, what role does the motor play in the refrigerator electric damper?
The main function is the adjustable air volume, the refrigerator electric damper uses a stepper motor, its stepping Angle is 7.5 steps, through the appropriate design of the gear reduction mechanism transmission ratio, each step of the stepper motor can make the baffle swing 0.5, that is, the baffle from closed to the maximum opening of 90. The swing Angle requires the stepper motor 1800 steps, and any pulse number less than 1800 corresponds to a swing Angle of the baffle swing less than 90 degrees, so that the baffle can basically adjust the ventilation amount stepless.
Post time: Oct-12-2023