EP0446528A2 - Vorrichtung zur Verhinderung der Eisbildung - Google Patents

Vorrichtung zur Verhinderung der Eisbildung Download PDF

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Publication number
EP0446528A2
EP0446528A2 EP90313870A EP90313870A EP0446528A2 EP 0446528 A2 EP0446528 A2 EP 0446528A2 EP 90313870 A EP90313870 A EP 90313870A EP 90313870 A EP90313870 A EP 90313870A EP 0446528 A2 EP0446528 A2 EP 0446528A2
Authority
EP
European Patent Office
Prior art keywords
refrigerator
frost
freezer
temperature
cooling portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP90313870A
Other languages
English (en)
French (fr)
Other versions
EP0446528A3 (en
Inventor
Tatsukiyo Otsuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP27806790A external-priority patent/JPH03279772A/ja
Application filed by Individual filed Critical Individual
Publication of EP0446528A2 publication Critical patent/EP0446528A2/de
Publication of EP0446528A3 publication Critical patent/EP0446528A3/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/04—Preventing the formation of frost or condensate

Definitions

  • the present invention relates to an apparatus for preventing frost from being formed on an inner surface of a freezer and on a surface of a cooling portion of a freezing machine.
  • An object of the present invention is to provide an apparatus for preventing the frost from being formed on an inner surface of a wall of a refrigerator or a freezer or a cooling portion of a freezing machine without raising temperature in the freezing equipment such as the refrigerator, the freezer and the cooling portion of the freezing machine, in other words, without resulting the deterioration in the quality of the refrigerated or freezed articles and any energy loss.
  • an apparatus for preventing frost from being formed according to the invention is characterized in that an electrical conductive member is lined through an electric insulating material layer on an inner surface of a wall of a freezing equipment such as a refrigerator or a freezer and negative electrons are charged on said electrical conductive member.
  • a frost preventing apparatus is characterized in that a cooling portion of a freezing machine is electrically insulated from a body portion of a freezing machine and negative electrons are charged on the insulated cooling portion.
  • any frost is not formed thereon by an action of the negative electrons.
  • the frost is formed on an inner surface of a wall of the refrigerator and the freezer or a cooling portion of the freezing machine. Accordingly, there is no need to raise the temperature in the refrigerator or freezer in order to remove the frost and thereby it is avoided to result the deterioration in the quality of the refrigerated or freezed articles. Further, as there is no energy loss to remove the frost, it is possible to reduce the running cost of the refrigerator, the freezer and the like.
  • Fig. 1 is a vertical cross sectional view of a refrigerator to which an apparatus for preventing frost from being formed according to the invention is applied
  • Fig. 2 is a vertical sectional view of a refrigerator including a freezing machine to which an apparatus for preventing frost from being formed according to the invention is applied.
  • Fig. 1 shows an embodiment in which an apparatus for preventing frost from being formed according to the invention is applied to a refrigerator 10.
  • An electric insulating material 4 is adhered on an inner surface of a wall 6 of the refrigerator 10.
  • an electric conductive member 3 is lined so as to surround an interior 5 of the refrigerator 10.
  • a freezing machine 2 is mounted on the wall 6 at a top portion thereof and the freezing machine 2 makes cooled air flow down in the interior 5 of the refrigerator 10.
  • a negative electron generating device 1 is provided on an exterior of the wall 6.
  • the negative electron generating device 1 utilizes a high voltage electrostatic transformer and an alternating current 100 V is impressed on a primary side of the transformer and one pole of a secondary side thereof of high voltage is insulated and only the other one pole is connected with the electric conductive member 3.
  • an alternating current 100 V is impressed on a primary side of the transformer and one pole of a secondary side thereof of high voltage is insulated and only the other one pole is connected with the electric conductive member 3.
  • negative electrons due to the electric induction are charged on the electric conductive material 3. It has been found that with respect to the value of the electric current on the primary side of the high voltage electrostatic transformer, 0.02 A ⁇ 0.3 A per 1 m2 of an electrode is optimum.
  • Fig. 2 shows an embodiment in which an apparatus for preventing frost from being formed according to the invention is applied to a freezing machine.
  • the freezing machine 2 mounted on the upper portion of the refrigerator 11 comprises a body portion 12 including a compressor, a condenser, an expansion valve and the like provided at the exterior of the refrigerator 11 and a cooling portion (an evaporator) 14 with heat dissipating fins 15 provided at the interior of the refrigerator 11.
  • the cooling portion 14 is made of an electric conductive metal tube and is connected with the body portion 12 of the freezing machine through electric insulating joints 13 so that it is electrically insulated from the body portion 12.
  • a negative electron generating device 1 is provided at the exterior of the wall 6.
  • an alternating current of 100 V is impressed on the primary side and one pole of the secondary side of high voltage is electrically insulated and only the other pole is connected with the cooling portion 14.
  • negative electrons are charged on the cooling portion 14.
  • the frost forming preventing apparatus according to the invention has a remarkable effect to prevent the forming of the frost.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
EP19900313870 1990-03-16 1990-12-19 An apparatus preventing frost from being formed Withdrawn EP0446528A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP65692/90 1990-03-16
JP6569290 1990-03-16
JP27806790A JPH03279772A (ja) 1990-03-16 1990-10-17 着霜防止装置
JP278067/90 1990-10-17

Publications (2)

Publication Number Publication Date
EP0446528A2 true EP0446528A2 (de) 1991-09-18
EP0446528A3 EP0446528A3 (en) 1992-07-08

Family

ID=26406828

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900313870 Withdrawn EP0446528A3 (en) 1990-03-16 1990-12-19 An apparatus preventing frost from being formed

Country Status (2)

Country Link
EP (1) EP0446528A3 (de)
AU (1) AU6809290A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998033025A1 (en) * 1997-01-23 1998-07-30 Laijoki Puska Ritva Method and apparatus in a space study

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1063677A (fr) * 1951-10-05 1954-05-05 Basf Ag Procédé pour la séparation électrostatique de brouillards d'acides
US3681896A (en) * 1970-07-09 1972-08-08 Univ Ohio Control of frost formation in heat exchangers by means of electrostatic fields
JPS57172124A (en) * 1981-04-17 1982-10-22 Hitachi Ltd Heat exchanger of air conditioner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998033025A1 (en) * 1997-01-23 1998-07-30 Laijoki Puska Ritva Method and apparatus in a space study
US6319136B1 (en) 1997-01-23 2001-11-20 Ritva Laijoki-Puska Method and apparatus in a space study

Also Published As

Publication number Publication date
AU6809290A (en) 1991-09-19
EP0446528A3 (en) 1992-07-08

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