Ice maker for refrigerator

Abstract

Disclosed is an ice maker for a refrigerator. The ice maker is further provided with an ice making evaporator in addition to an evaporator for cooling a refrigerating chamber of a freezing chamber, and the ice making evaporator is sunk in water to generate ice, thereby quickly creating transparent ice. The ice maker can also be disposed in the refrigerating chamber or a refrigerating chamber door, thus to prevent ice from being formed with air bubble remaining in water, resulting in enhancing transparency of ice. In addition, even if the ice maker is disposed in the refrigerating chamber door, cold air is not needed to be induced from the freezing chamber, which allows independent operations of the freezing chamber and the ice maker, thereby increasing energy efficiency.

Description

TECHNICAL FIELD [0001]The present invention relates to an ice maker employed in a refrigerator.BACKGROUND ART[0002]In recent time, large-sized refrigerators are provided with ice makers therein for making ice pieces. The ice maker is configured such that a certain amount of water supplied in an ice making tray is iced by applying cold air and then the ice in the tray is carried to an ice storing container for storage.[0003]In such ice maker, the ice making tray is disposed under a condition having an ice point (freezing point) lower than 0° C., such as a freezing chamber, so as to freeze water by cold air. Hence, a portion where cold air first reaches starts to be iced, and such icing is advanced toward a central direction. For example, the is surface of the water which is first contacted by its surrounding cold air start to be iced to form a core of ice. Such icing is in progress toward the center of the water once the core of ice is formed, thereby generating ice eventually.[0004]...

AI Technical Summary

Benefits of technology

[0006]Therefore, to solve the problems of the related art ice maker for a refrigerator, an object of the present invention is to provide an ice maker for a refrigerator capable of enhancing an icing speed.

[0007]Another object of the present invention is to provide an ice maker for a refrigerator capable of facilitating the generation of transparent ice by allowing air bubble separated from water during an icing process to be quickly discharged out of the water.

[0010]A refrigerator according to the present invention is further provided with an ice making evaporator in addition to an evaporator for cooling a refrigerating chamber or a freezing chamber and allows the ice making evaporator to be sunk in water for icing, so as to enable a quick generation of transparent ice. Also, an ice maker can be disposed either in the refrigerating chamber or a refrigerating chamber door, thus to prevent the ice from being generated with air bubbles remaining in the water, thereby enhancing ice transparency. In addition, even if the ice maker is disposed in the refrigerating chamber door, cold air does not have to be induced from the freezing chamber, which allows independent operations of the freezing chamber and the ice maker, resulting in an increase in energy efficiency.

Problems solved by technology

Accordingly, a loss occurs due to a convection heat transfer, which lowers icing speed.

Furthermore, water supplied to the ice making tray contains a certain amount of air.

As a result, such air bubble in the water is not discharged outwardly but remains, which causes a generation of opaque ice.

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