(19)
(11) EP 0 446 528 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
08.07.1992 Bulletin 1992/28

(43) Date of publication A2:
18.09.1991 Bulletin 1991/38

(21) Application number: 90313870.9

(22) Date of filing: 19.12.1990
(51) International Patent Classification (IPC)5: F25D 21/04
(84) Designated Contracting States:
CH DE DK FR GB IT LI

(30) Priority: 16.03.1990 JP 65692/90
17.10.1990 JP 278067/90

(71) Applicant: Otsuki, Tatsukiyo
Okayama-shi (JP)

(72) Inventor:
  • Otsuki, Tatsukiyo
    Okayama-shi (JP)

(74) Representative: Baillie, Iain Cameron et al
c/o Ladas & Parry Altheimer Eck 2
80331 München
80331 München (DE)


(56) References cited: : 
   
       


    (54) An apparatus preventing frost from being formed


    (57) An apparatus for preventing frost from being formed comprises an electric conductive material lining (3) lined on an inner surface of a wall (6) of a freezing equipment (10) such as a refrigerator and a freezer through an electrical insulating layer (4) and a device (1) for charging negative electrons on said electric conductive material lining (3). In another embodiment, the apparatus comprises a device (13) for electrically insulating a cooling portion (15) of a freezer (2) from a body portion (12) of said freezer and a device (1) for charging negative electrons on said electrically insulated cooling portion (15).






    Search report