Samsung Electronics Co., Ltd.

Eung-Ryeol Seo

Yoon-Young Kim

Jae-Seung Lee

Min-Gi Cho

Dong-Pil Seo

Jin-Baek Kim

Hak-Gyun Bae

Chang-Nyeun Kim

Myung-Wouk Kim

Yong-hun Kang

Eun-Suk Bang

Hwang-Mook Cho

Geon-Ung Lee

Hyun-Joo Kim

A refrigerator and a control method thereof in which a smooth flow of a refrigerant can be provided through an effective control for a path change valve when a flow path of the refrigerant is changed between two evaporators having different pressures. The refrigerator includes low-pressure-side and high-pressure-side evaporators, a path change device, and a controller. The path change device changes a refrigerant flow path between the low-pressure-side evaporator and the high-pressure-side evaporator, and has a simultaneous opening stage to simultaneously establish refrigerant flow paths respectively communicating with the low-pressure-side evaporator and high-pressure-side evaporator during the path change. The controller controls the path change device such that the simultaneous opening stage established when the refrigerant flow path is changed from the low-pressure-side evaporator to the high-pressure-side evaporator is longer than the simultaneous opening stage established when the refrigerant flow path is changed from the high-pressure-side evaporator to the low-pressure-side evaporator.

Refrigerator and control method thereof

The present invention relates to a cooling apparatus including a compressor, a condenser, a first expanding unit, a second expanding unit, a third expanding unit, a first evaporator, and a second evaporator; a first refrigerant circuit containing refrigerant discharged from the compressor and flowing into a suction side of the compressor through the condenser, the first expanding unit, the first evaporator, the second expanding unit and the second evaporator; a second refrigerant circuit containing the refrigerant passing through the condenser flowing into the suction side of the compressor through the third expanding unit and the second evaporator; a flow path control unit installed at a discharge side of the condenser, switching a refrigerant flow path so that the refrigerant passing through the condenser flows through at least one of the first and second refrigerant circuits; and a control unit selectively opening and closing the flow path control unit. The invention also relates to a method for controlling the apparatus.

Time division multi-cycle type cooling apparatus and method for controlling the same

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Kwangiu, South Korea

Eung-Ryeol Seo