(19)
(11) EP 2 413 075 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
23.11.2016 Bulletin 2016/47

(43) Date of publication A2:
01.02.2012 Bulletin 2012/05

(21) Application number: 11175667.2

(22) Date of filing: 27.07.2011
(51) International Patent Classification (IPC): 
F25D 21/02(2006.01)
F25D 21/08(2006.01)
 F25D 21/00(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 29.07.2010 KR 20100073368
29.07.2010 KR 20100073369

(71) Applicant: LG ELECTRONICS INC.
Yeongdeungpo-gu Seoul 150-721 (KR)

(72) Inventors:
  • Park, Yongjoo
    641-711 Gyeongnam (KR)
  • Eom, Yonghwan
    641-711 Gyeongnam (KR)

(74) Representative: Cabinet Plasseraud 
66, rue de la Chaussée d'Antin
75440 Paris Cedex 09
75440 Paris Cedex 09 (FR)

   


(54) Refrigerator and method for controlling the same


(57) The present invention relates to refrigerators, and more particularly, to a refrigerator which can measure an amount of frost on an evaporator in real time and determine a frost removing time; and a method for controlling the same.
The refrigerator includes a body having at least one storage space for low temperature storage, a compressor in the body for compressing refrigerant, an evaporator for making heat exchange between the refrigerant from the compressor and air in the storage space, a frost removal heater for removing frost from the evaporator, an optical sensor having a light emitting unit for directing a light to the evaporator and a light receiving unit for receiving the light from the light emitting unit, and a control unit for controlling operation of the frost removal heater with reference to a quantity of the light received at the light receiving unit.







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