(19)
(11) EP 2 322 886 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
25.02.2015 Bulletin 2015/09

(43) Date of publication A2:
18.05.2011 Bulletin 2011/20

(21) Application number: 10188725.5

(22) Date of filing: 25.10.2010
(51) International Patent Classification (IPC): 
F25D 21/02(2006.01)
 G01N 27/22(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: 12.11.2009 KR 20090109312

(71) Applicant: Samsung Electronics Co., Ltd.
Suwon-si, Gyeonggi-do, 443-742 (KR)

(72) Inventors:
  • Kwak, Hyun Suk
    Gyeonggi-do (KR)
  • Ko, Young Chul
    Gyeonggi-do (KR)
  • Kim, Tae Gyu
    Busan (KR)
  • Kim, Nak Hyun
    Suwon-si (KR)

(74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser 
Leopoldstrasse 4
80802 München
80802 München (DE)

   


(54) Frost detecting apparatus, and cooling system and refrigerator having the same


(57) A frost detecting apparatus (200) including a first electrode (210) to generate an electric field in a frost detection region, a second electrode (230) to prevent the electric field from leaking into a frost non-detection region, an insulator (220) arranged between the first electrode and the second electrode, to insulate the first electrode, and a shield arranged around an exposed portion of the insulator, to prevent the electric field from leaking into the frost non-detection region through the exposed portion of the insulator. As the same potential is established at the first and second electrodes, it is possible to prevent electric field from leaking into a frost non-detection region through side surfaces of the first electrode. Accordingly, the electric field is varied only by frost formed in a frost detection region, so that it is possible to more accurately detect formation of frost and the amount of the formed frost.







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Search report