Refrigerator and control method thereof

Details Refrigerator and control method thereof Refrigerator and control method thereof

2005-04-15

2008-10-28

Jiang, Chen-Wen (Department: 3744)

Refrigeration

Automatic control

Refrigeration producer

C062S197000

Reexamination Certificate

active

07441413

ABSTRACT:
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.

REFERENCES:
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patent: 2002/0043073 (2002-04-01), Park et al.
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patent: 2004-0000963 (2004-07-01), None
U.S. Appl. No. 10/814,799, filed Apr. 2004, Bae et al., Samsung Electronics Co., Ltd.

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