DOOR OPENING DEVICE AND REFRIGERATOR

PROBLEM TO BE SOLVED: To easily open a door by continuous opening operation of a door opening device when the door is difficult to open. SOLUTION: In the door opening device 3 for opening the door 2 by an output shaft 8 advancing and retreating by converting rotation of a motor 7 to linear movement, a normal voltage V1 to a forward direction is applied from a microcomputer 21 to the motor 7 by pushing an operation switch 5. When a door switch 15 detecting opening and closing of the door 2 detects closing of the door upon movement of the output shaft 8 to the forward direction, a reverse voltage is once applied to the motor 7 and the output shaft 8 is forcibly retreated and is returned to be in an initial stage, and then, a voltage V2 higher than the normal voltage V1 is applied to the motor 7 again, and thereby opening operation is continuously performed. When the door switch 15 detects closing of the door after that, the output shaft 8 is retreated and the current carrying is interrupted, and an alarm is made by an alarm means 16. COPYRIGHT: (C)2007,JPO&INPIT