KR970028356A - Transparent window defroster for cold air control of refrigerator - Google Patents

Abstract

According to an aspect of the present invention, there is provided a refrigerator having a transparent window that prevents cold air from leaking out when a door is opened, the light emitting unit being installed inside the refrigerator door spaced a predetermined distance from the transparent window and irradiating light to the inside of the refrigerator. And a light receiving unit receiving the signal irradiated from the light emitting unit and processing the signal, a light amount detecting unit detecting the amount of light signaled by the light receiving unit, and comparing the detected amount of light with the reference light quantity to the reference light quantity. A control unit for controlling each element of the refrigerator to remove frost generated in the transparent window when the amount of light is less than a light amount, and a hot wire driver for outputting a driving signal for removing frost generated in the transparent window under control of the controller; A timer unit counting a time from the time point at which the hot wire driving unit is operated under the control of the controller; And a heating wire provided with a driving signal of the heating wire driver to remove frost generated in the transparent window. Therefore, the present invention can be convenient for the user by removing the frost through the heating wire is automatically detected when the frost is generated on the surface due to the temperature difference with the transparent window installed inside the refrigerator to control the cold air.

Description

Transparent window defroster for cold air control of refrigerator

As this is a public information case, the full text was not included.

Figure is a block diagram of a transparent window defrosting device for controlling the cold air of the refrigerator according to a preferred embodiment of the present invention.

Claims (4)

A refrigerator having a transparent window for preventing cold air from leaking to the outside when the door is opened, the refrigerator comprising: a light emitting unit 10 installed inside the refrigerator door spaced apart from the transparent window by a predetermined distance and irradiating light into the refrigerator; And a light receiving unit 20 that receives the light emitted from the light emitting unit 10 and processes the light, a light amount detecting unit 30 that detects the amount of light signaled by the light receiving unit 20, and the light amount detecting unit 30. The control unit 40 and the control unit 40 for controlling the elements of the refrigerator to remove frost generated in the transparent window when the detected light amount is less than the reference light amount by comparing the detected light amount and the reference light amount According to the control of the hot-wire driver 50 for outputting the drive signal to remove the frost generated in the transparent window according to the control unit 40, the time from the time when the hot-wire driver 50 operates And a timer unit 60 for heating and a heating wire 70 that receives a drive signal from the hot wire driving unit 50 and is heated to remove frost generated in the transparent window. . The apparatus of claim 1, wherein the light emitting part (10) and the light receiving part (20) comprise a photo coupler. The method of claim 1, wherein the control unit 40 removes the cold window for the cold air intermittent of the refrigerator to stop the operation of the hot-wire drive unit 50 when the time the operation of the hot-wire drive unit 50 exceeds the reference defrost time. Device. The hot wire driver 50 of claim 3, wherein the controller 40 removes the frost generated in the transparent window according to the operation of the hot wire 70 and detects a large amount of light in the light quantity detector 30. Apparatus for removing the transparent window for controlling the cold air of the refrigerator to stop the operation of the heating wire (70) by stopping the operation. * Note: The disclosure is based on the original application.