REFRIGERATOR - LG ELECTRONICS INC

Title:

REFRIGERATOR

Document Type and Number:

WIPO Patent Application WO/2018/169178

Kind Code:

A1

Abstract:

The present invention comprises: doors formed to open and close storage chambers; a thermoelectric element module formed so as to cool the storage chambers; a defrosting temperature sensor provided at the thermoelectric element module, and formed so as to sense the temperature of the thermoelectric element module; and a control part formed so as to control the output of the thermoelectric element module, wherein the thermoelectric element module includes: a thermoelectric element having a heat absorbing part and a heat radiating part; a first heat sink disposed to come in contact with the heat absorbing part, and formed so as to exchange heat with the inner side of the storage chamber; a first fan provided to face the first heat sink, and causing the wind to be generated so as to accelerate the heat exchange of the first heat sink; a second heat sink disposed to come in contact with the heat radiating part, and formed so as to exchange heat with the outer side of the storage chamber; and a second fan provided to face the second heat sink, and causing the wind to be generated so as to accelerate the heat exchange of the second heat sink, the control part is formed so as to start a natural defrosting operation for removing frost formed on the thermoelectric element module at every preset period on the basis of integrated hours and to finish a natural defrosting operation when the temperature of the thermoelectric element module, measured by the defrosting temperature sensor, reaches a reference defrosting finish temperature, the preset period, which allows the start of the natural defrosting operation to be determined, change according to whether the door is opened, and when the natural defrosting operation starts, the operation of the thermoelectric element stops, the first fan continues to rotate, and the second fan temporally stops and then rotates again after a preset time elapses.

Inventors:

OH MINKYU (KR)
SUL HEAYOUN (KR)
LIM HYOUNGKEUN (KR)
KIM SEOKHYUN (KR)
CHOI JEEHOON (KR)

Application Number:

PCT/KR2017/015743

Publication Date:

September 20, 2018

Filing Date:

December 29, 2017

Export Citation:

Click for automatic bibliography generation Help

Assignee:

LG ELECTRONICS INC (KR)

International Classes:

F25D15/00; F25B21/02; F25D17/06; F25D21/00; F25D21/08; F25D29/00

Foreign References:

US20070193280A1	2007-08-23
KR100140065B1
JP2009008359A	2009-01-15
KR20040094045A	2004-11-09
KR20120133287A	2012-12-10
KR20100057216A	2010-05-31
KR970002215A	1997-01-24

Other References: