Door opening and closing device for refrigerator and method of controlling the same
US10197326B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2015 |
| Grant date | Feb 5, 2019 |
| Priority date | — |
| Expiry date | Jan 19, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/182
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A door opening and closing device for a refrigerator includes a door coupled to a main body, an opening and closing unit including a drive unit for generating rotational force by means of a motor and a door rotating mechanism for opening or closing the door, a device for measuring a back electromotive force generated from the motor, a power circuit connected for supplying power to the motor, a circuit for transmitting back electromotive force of the motor to the device, a control switch for selectively connecting the motor to the circuit or the power circuit, and a control unit for connecting the control switch to the power circuit when the motor is activated, and connecting the control switch to the circuit and opening or closing the door when the motor is deactivated, wherein the control unit closes the door when a predetermined back electromotive force is input to the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.