EP0298416B1 - Procédé pour éliminer la couche de buée interne nuisant à la transparence du vitrage d'un réfrigérateur et réfrigérateur pour la mise en oeuvre du procédé - Google Patents

Procédé pour éliminer la couche de buée interne nuisant à la transparence du vitrage d'un réfrigérateur et réfrigérateur pour la mise en oeuvre du procédé Download PDF

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Publication number
EP0298416B1
EP0298416B1 EP88110692A EP88110692A EP0298416B1 EP 0298416 B1 EP0298416 B1 EP 0298416B1 EP 88110692 A EP88110692 A EP 88110692A EP 88110692 A EP88110692 A EP 88110692A EP 0298416 B1 EP0298416 B1 EP 0298416B1
Authority
EP
European Patent Office
Prior art keywords
door
glazing
circulation
refrigerator
air
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.)
Expired - Lifetime
Application number
EP88110692A
Other languages
German (de)
English (en)
Other versions
EP0298416A2 (fr
EP0298416A3 (en
Inventor
Rolf Dr. Groth
Hans Bause
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.)
Flachglas Wernberg GmbH
Original Assignee
Flachglas Wernberg GmbH
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
Application filed by Flachglas Wernberg GmbH filed Critical Flachglas Wernberg GmbH
Priority to AT88110692T priority Critical patent/ATE89068T1/de
Publication of EP0298416A2 publication Critical patent/EP0298416A2/fr
Publication of EP0298416A3 publication Critical patent/EP0298416A3/de
Application granted granted Critical
Publication of EP0298416B1 publication Critical patent/EP0298416B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
    • A47F3/0404—Cases or cabinets of the closed type
    • A47F3/0426—Details
    • A47F3/0434—Glass or transparent panels
    • 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
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/11—Fan speed control
    • F25B2600/112—Fan speed control of evaporator fans
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/02—Humidity
    • 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
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/02—Sensors detecting door opening

Definitions

  • the invention relates to a method for removing the inside, the transparency-impairing condensation fitting on the glazing of a refrigerator, which is cooled by forced air circulation and in which this fitting is formed with the door open.
  • the invention also relates to a refrigerator unit for carrying out the method.
  • such glazing with a moderate k-value has, for example, a three-pane structure with two air gaps, each 6 mm wide, wherein the electrically heatable coating for preventing condensation is arranged on the side of the outer pane facing the air gap.
  • a k-value of about 2.4 W / m2K is obtained.
  • the main reason for the prolongation of the fogging time is the different temperature difference between the inner pane and the interior of the refrigerator, which results when using glazing with a moderate k-value compared to glazing with a high k-value.
  • the higher thermal resistance of the highly insulating glazing means that this temperature difference becomes smaller. This also reduces the difference in the corresponding water vapor partial pressures as the driving force for the degradation of the ice or water layer on the inner pane.
  • the object of the invention is therefore to remove the inside condensation fitting formed on the glazing of the refrigeration cabinet when the door of a generic refrigeration cabinet is opened, without great expenditure on equipment and in an economical manner.
  • the circulating speed of the air is increased to a value ensuring sufficient transparency of the glazing after the door is closed until the condensation fitting is dismantled, and that subsequently the circulating speed of the air is reduced again to the value required for normal cooling operation becomes.
  • the speed of circulation of the air after closing the door can be increased to 1.5 to 4 times, preferably to 2.5 times, the value required for normal door operation.
  • a refrigerator with at least one door and with glazing, in particular highly heat-insulating glazing, in the area of the door and / or wall, and with a blower for forced air circulation
  • the refrigerator is characterized in that the blower is designed in two stages and by a switching device with a switch that can be activated when the door is closed is switched to the stage of increased circulation speed.
  • the fan runs at the lower speed.
  • the second stage of the fan is switched on, so that the fan runs at a higher speed, and accordingly the circulation speed of the air in the refrigerator is increased.
  • the fan is switched back to the level corresponding to normal cooling operation.
  • the point in time at which the blower is switched back on can be predetermined in that the switching device is a time relay which is set in accordance with the respective operating conditions.
  • the described method can consequently be implemented without great expenditure on equipment. It is only necessary to equip the refrigerated cabinet in question with a 2-stage blower and an associated switching device, in the simplest case this switching device merely consisting of a timing relay. Particularly good results are obtained if the glazing of the refrigerated cabinet consists of a multi-pane insulating glass, the inner pane of which has an infrared reflection layer on the cold room side.

Landscapes

  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Refrigerator Housings (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)

Claims (6)

  1. Procédé pour éliminer la couche de buée intérieure nuisant à la transparence du vitrage d'un réfrigérateur refroidi par circulation forcée d'air et dans lequel cette couche de buée se forme lorsque la porte est ouverte, caractérisé en ce que la vitesse de circulation de l'air après la fermeture de la porte jusqu'à l'élimination de la couche de buée est élevée à une valeur garantissant une transparence suffisante du vitrage, et en ce qu'ensuite, la vitesse de circulation de l'air est à nouveau ramenée à la valeur requise pour le fonctionnement en mode réfrigérant normal.
  2. Procédé selon la revendication 1, caractérisé en ce que la vitesse de circulation de l'air après la fermeture de la porte augmente de 1,5 à 4 fois par rapport à la valeur nécessaire pour le fonctionnement en mode réfrigérant normal.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la vitesse de circulation de l'air après la fermeture de la porte augmente de 2,5 fois par rapport à la valeur nécessaire au fonctionnement en mode réfrigérant normal.
  4. Réfrigérateur pour la mise en oeuvre du procédé selon l'une des revendications 1 à 3, comportant au moins une porte présentant des vitrages dans la zone de la porte et/ou de la paroi, ainsi qu'une soufflante pour la circulation forcée d'air, caractérisé en ce que la soufflante a deux positions et est commutée sur la position où la vitesse de circulation est plus élevée par un dispositif de commutation à l'aide d'un commutateur pouvant être activé en fermant la porte jusqu'à l'élimination de la couche de buée, puis à nouveau commutée sur la position inférieure.
  5. Réfrigérateur selon la revendication 4, caractérisé en ce que le dispositif de commutation est un relais à temporisation.
  6. Réfrigérateur selon la revendication 4, caractérisé en ce qu'à l'intérieur, sur le vitrage est disposé un hygromètre faisant fonction de capteur de la valeur réelle et monté dans une boucle de régulation commandant le dispositif de commutation.
EP88110692A 1987-07-07 1988-07-05 Procédé pour éliminer la couche de buée interne nuisant à la transparence du vitrage d'un réfrigérateur et réfrigérateur pour la mise en oeuvre du procédé Expired - Lifetime EP0298416B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88110692T ATE89068T1 (de) 1987-07-07 1988-07-05 Verfahren zum entfernen des innenseitigen, die transparenz beeintraechtigenden kondensationsbeschlages auf der verglasung eines kuehlmoebels und kuehlmoebel zur durchfuehrung des verfahrens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3722349A DE3722349C1 (de) 1987-07-07 1987-07-07 Verfahren zum Entfernen des innenseitigen,die Transparenz beeintraechtigenden Kondensationsbeschlages auf der Verglasung eines Kuehlmoebels und Kuehlmoebel zur Durchfuehrung des Verfahrens
DE3722349 1987-07-07

Publications (3)

Publication Number Publication Date
EP0298416A2 EP0298416A2 (fr) 1989-01-11
EP0298416A3 EP0298416A3 (en) 1990-04-04
EP0298416B1 true EP0298416B1 (fr) 1993-05-05

Family

ID=6331035

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88110692A Expired - Lifetime EP0298416B1 (fr) 1987-07-07 1988-07-05 Procédé pour éliminer la couche de buée interne nuisant à la transparence du vitrage d'un réfrigérateur et réfrigérateur pour la mise en oeuvre du procédé

Country Status (6)

Country Link
US (1) US4827729A (fr)
EP (1) EP0298416B1 (fr)
AT (1) ATE89068T1 (fr)
AU (1) AU596062B2 (fr)
DE (1) DE3722349C1 (fr)
ZA (1) ZA884525B (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2639424A1 (fr) * 1988-11-24 1990-05-25 Salaberry Bernard De Meubles de conservation de produits par le froid
GB9509734D0 (en) * 1995-05-13 1995-07-05 Hussmann Europ Ltd Refrigeration equipment
US5852284A (en) * 1997-01-07 1998-12-22 Libbey-Owens-Ford Co. Insulating glass with capacitively coupled heating system
DK11498A (da) * 1998-01-27 1999-07-28 Caravell A S Fryseboks med luftafdugning af glaslåg
JP2000088438A (ja) * 1998-09-09 2000-03-31 Sanyo Electric Co Ltd 冷却貯蔵庫
EP1020149A3 (fr) * 1999-01-15 2000-11-02 Isa SpA Procédé et dispositif pour la commande des conditions frigorifiques dans des modules refroidis
US6378324B1 (en) * 1999-10-26 2002-04-30 Crane Co. Thermally regulated storage container
US6324853B1 (en) * 2000-09-28 2001-12-04 Spx Corporation De-icing for low temperature refrigeration devices
US6722142B1 (en) 2003-02-07 2004-04-20 Sub-Zero Freezer Company, Inc. Refrigerated enclosure
US8215921B2 (en) * 2009-01-23 2012-07-10 Rbc Manufacturing Corporation Methods and systems for defogging transparent doors in display cases

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1129972B (de) * 1960-07-05 1962-05-24 Bbc Brown Boveri & Cie Tiefkuehlmoebel mit einer elektrischen Widerstandsheizung zur Vermeidung einer Fluessigkeits-kondensation an der Aussenoberflaeche
US3307373A (en) * 1965-10-22 1967-03-07 John S Booth Transparent refrigerator door control
FR2126665A5 (fr) * 1971-02-09 1972-10-06 Detroit Sem Electromecca
US4009586A (en) * 1975-02-03 1977-03-01 Skvarenina John A Method and apparatus for preventing condensation from forming about the periphery of a freezer door
SE422711B (sv) * 1978-05-19 1982-03-22 Frigoscandia Contracting Ab Sett att under drift avlegsna frostbeleggningar fran kylbatterier samt anordning for genomforande av settet
US4203301A (en) * 1979-02-16 1980-05-20 Schaefer Corporation Control circuit for refrigerator fan
US4361012A (en) * 1980-05-01 1982-11-30 Tyler Refrigeration Corporation Energy efficient refrigerated merchandiser display case
GB2131143B (en) * 1982-11-11 1986-06-25 Bejam Group Plc Preventing misting of refrigerated enclosure transparent doors
IT8521802V0 (it) * 1985-05-14 1985-05-14 Costan Spa Banco frigorifero del tipo a vasca con parete frontale trasparente.
US4750335A (en) * 1987-06-03 1988-06-14 Hill Refrigeration Corporation Anti-condensation means for glass front display cases

Also Published As

Publication number Publication date
EP0298416A2 (fr) 1989-01-11
ZA884525B (en) 1989-02-22
US4827729A (en) 1989-05-09
AU1870388A (en) 1989-01-12
EP0298416A3 (en) 1990-04-04
DE3722349C1 (de) 1988-04-07
AU596062B2 (en) 1990-04-12
ATE89068T1 (de) 1993-05-15

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