EP2881180B1 - Procédé pour faire un revêtement réduisant la condensation et la formation de givre - Google Patents

Procédé pour faire un revêtement réduisant la condensation et la formation de givre Download PDF

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Publication number
EP2881180B1
EP2881180B1 EP14196086.4A EP14196086A EP2881180B1 EP 2881180 B1 EP2881180 B1 EP 2881180B1 EP 14196086 A EP14196086 A EP 14196086A EP 2881180 B1 EP2881180 B1 EP 2881180B1
Authority
EP
European Patent Office
Prior art keywords
solution
accordance
peroxide
polymer
exposure
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.)
Not-in-force
Application number
EP14196086.4A
Other languages
German (de)
English (en)
Other versions
EP2881180A2 (fr
EP2881180A3 (fr
Inventor
Clemens Brummer
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.)
Liebherr Hausgeraete Ochsenhausen GmbH
Original Assignee
Liebherr Hausgeraete Ochsenhausen 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 Liebherr Hausgeraete Ochsenhausen GmbH filed Critical Liebherr Hausgeraete Ochsenhausen GmbH
Publication of EP2881180A2 publication Critical patent/EP2881180A2/fr
Publication of EP2881180A3 publication Critical patent/EP2881180A3/fr
Application granted granted Critical
Publication of EP2881180B1 publication Critical patent/EP2881180B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/04—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain a surface receptive to ink or other liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • F25D23/065—Details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2201/00—Polymeric substrate or laminate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation

Definitions

  • the present invention relates to a method for producing a coating of one or more surfaces of a refrigerator and / or freezer.
  • Cooling or freezing devices known from the prior art comprise a body with a cooled interior and a door, a lid or the like, with which the cooled interior can be closed.
  • the cooled interior is limited by the inner container and the inner wall of the closure element.
  • the refrigerated space are usually built-in elements, such as drawers or shelves or the like, which serve to receive or storage of refrigerated or frozen goods.
  • the DE 94 14 828 U1 discloses a refrigerator, in the refrigerated compartment, a container-like insert is inserted from a plastic film. To remove the ice, the insert can be easily removed as a result of the easily removable storage after removal of the goods and shaken out the ice.
  • the present invention is therefore based on the object to develop a method of the type mentioned in that the formation of ice and / or condensation on the surface of the device or a device component is prevented.
  • a coating of the surface is produced, which has the advantage that the formation of ice and preferably also the condensation of water at the surface is prevented.
  • the surface may be, for example, a polystyrene surface. It is preferably a plasma-activated surface and particularly preferably a plasma-activated polystyrene surface.
  • the exposure results in crosslinking of the polymer, and preferably also in its attachment to the surface or substrate surface, causing the desired cure.
  • the exposure may be, for example, UV exposure.
  • the polymer used is preferably a hydrophilic polymer.
  • the polymer used is preferably polyvinylpyrrolidone (hereinafter PVP).
  • H 2 O 2 is used as peroxide in a preferred embodiment of the invention.
  • no initiator such as a free radical initiator or a photoinitiator is used in the process.
  • the condensation of the water under icing conditions on the surface is prevented.
  • it can not come to an ice formation.
  • the solution is dried before exposure.
  • This drying preferably takes place at room temperature.
  • the exposure takes place under an inert gas atmosphere and / or in the absence of oxygen and / or under vacuum.
  • the oxygen exclusion may be generated, for example, by an inert gas atmosphere, e.g. by inert gases such as Ar, Kr, etc., or by other means, such as by covering the surface with a film that is transparent to the exposure.
  • the solution contains a solvent, preferably ethanol.
  • a solvent preferably ethanol.
  • Other organic or inorganic solvents are also suitable.
  • the use of water or of chloroform as solvent is conceivable.
  • a solution of the polymer, in particular of PVP by dissolving the polymer in a preferably hydrophilic solvent, for example in ethanol, and adding a peroxide such as H 2 O 2 to this solution.
  • a preferably hydrophilic solvent for example in ethanol
  • a peroxide such as H 2 O 2
  • the polymer such as PVP in a solvent which already contains the at least one peroxide such as H 2 O 2 .
  • the coating solution is applied to the respective substrate such as an icing-prone portion of the inner container, the surface of the evaporator, a sensor, or the like, then dried for some time, and finally by exposure to exposure such as ultraviolet irradiation cured at a wavelength in the range ⁇ 280 nm.
  • the solution is thus designed such that curing takes place by the action of the exposure.
  • the peroxide, in particular H 2 O 2 , which is added to the solution of the polymer, in particular PVP, in the solvent may be, for example, a 25-35% by weight or% by volume solution of the peroxide, preferably in water act.
  • the surface to be coated may be, for example, a polystyrene or polystyrene surface.
  • Polystyrene is merely an example that does not limit the invention. The use of other plastics or other surfaces is possible and encompassed by the invention.
  • the present invention furthermore relates to the use of a solution comprising at least one polymer, in particular polyvinylpyrrolidone, and at least one peroxide, in particular H 2 O 2 , as coating agent, which is used for application to one or more surfaces of a refrigerator and / or freezer.
  • a solution comprising at least one polymer, in particular polyvinylpyrrolidone, and at least one peroxide, in particular H 2 O 2 , as coating agent, which is used for application to one or more surfaces of a refrigerator and / or freezer.
  • This order serves to prevent the condensation of water and / or to prevent the formation of ice on the at least one surface.
  • the solution according to any one of claims 1 to 9 is treated or assembled.
  • the solution is first dried and then cured by exposure or irradiation.
  • the solution is used in a process according to any one of claims 1 to 9.
  • the present invention further relates to a refrigerator and / or freezer with at least one cooled interior, in which there is at least one surface, wherein the surface is at least partially provided with a coating, which is prepared according to one of claims 1 to 9.
  • the surface mentioned can be, for example, the surface of the inner container and / or the inner wall of the door or of another closure element and / or the surface of an element located in the cooled interior, in particular a storage shelf and / or a drawer.
  • Other elements of a refrigerator and / or freezer are included, such as sensors, lighting means and devices, electrical or electronic components, etc.
  • the surface, which is provided with the coating according to the invention from Polystyrene or polystyrene.
  • the solution prepared in this way is applied to said inner container wall or e.g. applied to a freezer compartment front and allowed to dry at room temperature.
  • the surface to which the solution is applied may be plasma activated.
  • the coating obtained in this way is a mechanically or externally stable and non-wipeable and not readily removable coating of the inner container wall.
  • This coating has the advantage that even under icing conditions (T ⁇ 0 ° C) neither condensation of water from the air nor icing of the coated surface takes place. The removal of ice can thus be dispensed with.
  • the present invention relates to any component of a refrigerator and / or freezer.
  • one or more components of the refrigerant circuit may be provided with the said coating.
  • the evaporator is considered. If its surface is provided with said coating, it is possible to prevent evaporator icing and thus a reduction in its efficiency.
  • thermosensors or other sensors may be considered or other electronic and electrical components, such as lighting devices and / or their bulbs.
  • the present invention it is possible to prevent the formation of ice without it being necessary to use specially provided films.
  • the coating of the invention can remain permanently on the surfaces, resulting in a correspondingly durable protection against icing.

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)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)

Claims (9)

  1. Procédé pour faire un revêtement d'une ou de plusieurs surfaces d'un appareil de réfrigération et/ou de congélation,
    caractérisé en ce que
    le procédé comporte les étapes suivantes : application d'une solution contenant au moins un polymère et au moins un peroxyde sans initiateur sur la surface à revêtir de l'appareil de réfrigération et/ou de congélation et durcissement de la solution appliquée par exposition lumineuse avec une longueur d'onde < 280 nm.
  2. Procédé selon la revendication 1 ou 2, caractérisé en ce que le polymère est du polyvinylpyrrolidone et/ou en ce que le peroxyde est du H2O2.
  3. Procédé selon l'une des revendications précédentes, caractérisé en ce que la solution est séchée avant l'exposition lumineuse ou l'irradiation.
  4. Procédé selon la revendication 3, caractérisé en ce que le séchage est effectué à température ambiante.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'exposition lumineuse ou l'irradiation a lieu sous atmosphère de gaz inerte et/ou en l'absence d'oxygène et/ou sous vide.
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que la solution contient un solvant, de préférence de l'éthanol, de l'eau ou du chloroforme.
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que la solution est obtenue par le fait que le polymère, en particulier le polyvinylpyrrolidone, est dissout dans un solvant, de préférence dans de l'éthanol, de l'eau ou du chloroforme et que le peroxyde, en particulier le H2O2, est ajouté à cette solution.
  8. Procédé selon la revendication 7, caractérisé en ce que le peroxyde ajouté est une solution à 25-35 % du peroxyde, de préférence dans de l'eau.
  9. Procédé selon l'une des revendications précédentes, caractérisé en ce que la surface à revêtir est une surface composée de polystyrène ou comportant du polystyrène.
EP14196086.4A 2013-12-04 2014-12-03 Procédé pour faire un revêtement réduisant la condensation et la formation de givre Not-in-force EP2881180B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013020692 2013-12-04
DE102014006907.9A DE102014006907A1 (de) 2013-12-04 2014-05-09 Verfahren zur Herstellung einer Beschichtung

Publications (3)

Publication Number Publication Date
EP2881180A2 EP2881180A2 (fr) 2015-06-10
EP2881180A3 EP2881180A3 (fr) 2015-06-24
EP2881180B1 true EP2881180B1 (fr) 2017-11-29

Family

ID=52102463

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14196086.4A Not-in-force EP2881180B1 (fr) 2013-12-04 2014-12-03 Procédé pour faire un revêtement réduisant la condensation et la formation de givre

Country Status (2)

Country Link
EP (1) EP2881180B1 (fr)
DE (1) DE102014006907A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3639524A (en) * 1969-07-28 1972-02-01 Maurice Seiderman Hydrophilic gel polymer insoluble in water from polyvinylpyrrolidone with n-vinyl-2-pyrrolidone and methacrylic modifier
DE9414828U1 (de) 1994-09-13 1994-11-03 Schreiber, Heinrich, 74629 Pfedelbach Enteisungseinrichtung für Tiefkühlgeräte
DE29600041U1 (de) 1996-01-03 1996-02-29 Schreiber, Heinrich, 74629 Pfedelbach Enteisungsausstattung für Tiefkühlgeräte
FR2910117A1 (fr) * 2006-12-18 2008-06-20 Saint Gobain Procede de detection de dysfonctionnement d'une porte d'enceinte refrigeree
EP2674226A3 (fr) * 2012-06-14 2015-02-11 Liebherr-Hausgeräte Ochsenhausen GmbH Procédé de fabrication d'un revêtement

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2881180A2 (fr) 2015-06-10
DE102014006907A1 (de) 2015-06-11
EP2881180A3 (fr) 2015-06-24

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