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EP3228965B1 - Appareil de réfrigération et/ou de congélation - Google Patents

Appareil de réfrigération et/ou de congélation Download PDF

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Publication number
EP3228965B1
EP3228965B1 EP17165038.5A EP17165038A EP3228965B1 EP 3228965 B1 EP3228965 B1 EP 3228965B1 EP 17165038 A EP17165038 A EP 17165038A EP 3228965 B1 EP3228965 B1 EP 3228965B1
Authority
EP
European Patent Office
Prior art keywords
piezoelectric element
tank
concentrator
mist generator
sound waves
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.)
Active
Application number
EP17165038.5A
Other languages
German (de)
English (en)
Other versions
EP3228965A1 (fr
Inventor
Thomas Gindele
Arnulf Probst
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
Priority claimed from DE102016005405.0A external-priority patent/DE102016005405A1/de
Priority claimed from DE102016009345.5A external-priority patent/DE102016009345A1/de
Application filed by Liebherr Hausgeraete Ochsenhausen GmbH filed Critical Liebherr Hausgeraete Ochsenhausen GmbH
Publication of EP3228965A1 publication Critical patent/EP3228965A1/fr
Application granted granted Critical
Publication of EP3228965B1 publication Critical patent/EP3228965B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
    • 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
    • F25D23/069—Cooling space dividing partitions
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/04—Treating air flowing to refrigeration compartments
    • F25D2317/041—Treating air flowing to refrigeration compartments by purification
    • F25D2317/0413—Treating air flowing to refrigeration compartments by purification by humidification

Definitions

  • the present invention relates to a refrigerator and/or freezer with at least one body and with at least one cooled interior space surrounded by the body, at least one mist generator being arranged in the cooled interior, the mist generator having at least one piezoelectric element.
  • JP 2009 002590 A discloses another refrigerator and/or freezer known from the prior art with a mist generator.
  • the present invention is based on the object of developing a refrigerator and/or freezer of the type mentioned in such a way that it has a particularly compact structure.
  • the fog generator has one or more outlet openings through which the generated fog exits the fog generator, with the at least one outlet opening lying in the direction of the sound waves emanating from the piezoelectric element.
  • This is not to be interpreted in a restrictive manner to the effect that the at least one outlet opening must lie exactly in the direction of propagation of the sound waves, although such an embodiment is also possible and is covered by the invention. Rather, it is to be understood that the mist generated does not pass through the piezoelectric element on its way to the outlet opening(s) and exits the fog generator "behind" the piezoelectric element, but rather leaves the fog generator on the side through the at least one outlet opening into which the sound waves point.
  • the at least one outlet opening is located in an area to the right of the piezoelectric element.
  • the at least one outlet opening is located in an area to the left of the piezoelectric element.
  • the at least one outlet opening is not located behind but in front of the surface of the piezoelectric element, by means of which the sound waves are generated.
  • the direction of propagation of the sound waves and the arrangement of the fog generator are arbitrary. It is conceivable, for example, that the fog generator or the assembly comprising it is arranged horizontally and the sound waves preferably move in a horizontal direction or essentially in a horizontal direction. However, the invention also includes the case that the fog generator or the assembly comprising it is arranged vertically or standing, as shown, for example, in DE 10 2013 225 716 A1 is known.
  • one or more concentrators are present, which have the task of concentrating the sound waves or water jets emanating from the at least one piezoelectric element on a point or on an area.
  • the fog generator is constructed from several modular components. These components can be, for example, a tank and a lid, which can be displaceable, pivotable or removable relative to the tank.
  • the fog generator comprises a receptacle, wherein the tank can be removed from the receptacle.
  • said concentrator is designed so that focusing takes place in a direction that is not in the direction in which the sound waves emanate from the piezoelectric element.
  • the concentrator can therefore lead to a reversal of direction.
  • the concentrator can be inclined to the horizontal. It is conceivable if the concentrator has at least one parabolic, semicircular, circular or flat, preferably oblique surface on which the sound waves generated by the piezoelectric element impinge.
  • the fog generator has at least one deflection element, which is arranged such that the sound waves focused by the concentrator or the water jet generated by the concentrator is deflected in the direction of the at least one outlet opening of the fog generator by means of the deflection element.
  • the piezoelectric element is arranged such that the sound waves emanating from it are inclined relative to the horizontal. This results in a comparatively simple and cost-effective design.
  • the piezoelectric element is preferably inclined so that the oblique water jet emanating from it divides into droplets outside the water surface, so that the concentrator can be dispensed with.
  • the mist generator has at least one deflection element which is arranged such that the sound waves emanating from the piezoelectric element or the water jet generated by the piezoelectric element is deflected in the direction of the at least one outlet opening by means of the deflection element.
  • the fog generator can have at least one base body and at least one lid closing the base body at the top, the piezeoelectric element and the concentrator being arranged on the base body and the deflection element on the lid.
  • the invention also includes the case where the mist generator protrudes upwards and/or downwards over the separating plate, for example, with the protrusion preferably being in a range of ⁇ 2 cm.
  • the projection on the top of the separating plate is a maximum of 1 cm and on the underside a maximum of 2 cm.
  • the fog generator has at least one tank and at least one lid closing the tank as well as at least one receptacle for the tank, it being preferably provided that the lid is movable relative to the tank, preferably removable, and that the tank is made of Recording can be removed. Because the tank is removable, it can be cleaned particularly easily, for example in a dishwasher.
  • the receptacle can form a fixed or integral part of the partition plate or another element of the device or can also be detachably arranged in the device.
  • the mist generator can have at least one nebulization chamber, with the at least one outlet opening connecting the nebulization chamber to the outside of the mist generator or to the cooled interior.
  • a plurality of outlet openings can be provided for the mist generated, it being preferably provided that the width of the nebulization chamber decreases as the distance from the piezoelectric element increases. This narrowing makes it possible to even out the spread of the mist through the multiple outlet openings.
  • the fog generator according to the present invention is arranged so that the fog emanating from it "falls" in an area below the fog generator or is conveyed by a fan or air stream.
  • This area can be, for example, a drawer or any other compartment, which is preferably located below a horizontal Separation plate is located. In a preferred embodiment of the invention, this separates two compartments from each other, which are operated at different temperatures during operation of the device, such as a cooling compartment and a cold storage compartment.
  • the piezoelectric element can be inclined in such a way that the water jet generated by the piezoelectric element divides into droplets outside the water surface of the water in the tank.
  • the mist generator has at least one lid, with the at least one deflection element being provided on the lid, which deflects the water jet striking it and generated by the piezoelectric element in the direction of one or more outlet openings of the mist generator.
  • a separate deflection element can be dispensed with since this is part of the lid and preferably an integral part of the lid.
  • the mist generator has at least one water tank that is inclined in such a way that water runs towards the piezoelectric element. This ensures that there is always enough water on the piezoelectric element when the tank is sufficiently filled.
  • the piezoelectric element is completely or largely covered with water when the mist generator is in operation.
  • the mist generator has at least one water tank, which includes at least one opening to the piezoelectric element, this opening being closed by at least one sealing element that transmits vibrations.
  • Figure 1 10 shows a horizontal separating plate that separates two compartments of different temperatures within the cooled interior of a refrigerator or freezer.
  • the fog generator 20 is located in the separating plate 10 and is integrated in such a way that it is flush with the top of the separating plate 10.
  • the fog generator does not protrude above the surface of the separating plate 10 on any side, i.e. not even on the underside.
  • the partition plate has a thickness of 30 mm or less.
  • the fog generator includes the lid 30, the tank 40 and the receptacle 50, as shown Figure 2 a), b) and c) emerges.
  • the lid 30 can be made in one or more parts. It can be completely removed to fill the tank 40 or just a part of it.
  • a measuring cup can be arranged on the tank 30, preferably molded on, which allows the tank to be filled more easily with water.
  • the lid 30 could also be arranged on the tank so that it can be folded or pivoted or moved.
  • the lid 30 can contain means or be marked in such a way that these means or markings serve as fill level markings.
  • the tank 40 is designed so that its top can be completely covered by the lid 30.
  • the tank has openings that prevent gas tightness, so that it is ensured that the mist can escape through the outlet openings of the tank 40.
  • the tank has means for level detection, such as steps, colored markings, sprayed markings on the tank wall, float systems, etc.
  • Figure 2 c shows the receptacle 50 for the tank 40 as well as the piezoelectric element, the piezoelectronics for controlling it, cables, plugs, etc.
  • the receptacle 50 has all the elements required to operate the fog generator. This can be integrated into the horizontal separating plate 10, as is the case with an injection molded part, or can be inserted into the separating plate 10 as an additional, ie as a separate part.
  • Figure 3 illustrates the design of the fog generator in a view from above at an angle without a lid.
  • Reference number 100 shows the piezoelectronics that controls the piezoelectric element P.
  • the reference symbol K denotes the concentrator, which focuses the sound waves or water jets emanating from the piezoelectric element P onto a point or area like a lens. From the concentrator K, the water or mist reaches the deflection element 90, which according to Figure 4 can represent an integral part of the lid 30. From there the mist is directed into the nebulization chamber V, in which the mist is directed through the outlet openings 60 into the drawer or the like below the separating plate.
  • the outlet openings 60 are to the right of the piezoelectric element P. Since the piezoelectric element P emits the sound waves according to the Figures 3 and 4 emits to the right, the outlet openings 60 are therefore in the direction in which the sound waves propagate in the fog generator, as is provided according to the invention.
  • the fact that the concentrator K initially reverses direction is harmless to the implementation of the idea according to the invention, since the deflection element causes a Further reversal of direction takes place so that the mist or the water jet reaches the outlet openings.
  • the reference number 80 denotes means at the outlet openings which cause larger drops to fall back into the tank 40 and only fine drops to pass through the outlet openings 60.
  • the reference numeral 70 denotes a wall or constriction which causes the mist to be pushed evenly through the outlet openings 60.
  • Figure 4 shows the fog generator in a longitudinal section view and illustrates the arrangement of the concentrator K. This deflects the water jet or the sound waves that are excited by the piezoelectric element P.
  • the shape of the concentrator can be parabolic, semicircular, circular or even just oblique.
  • the concentrator K is preferably made of aluminum, stainless steel or another metal. Plastic or coated plastic or plastic equipped with metal or metallized film is also conceivable.
  • the concentrator K is preferably dimensioned such that only the water jet or sound wave coming from the piezoelectric element P is recorded. The advantage of the small size and the suitable dimensions is that the water can easily get into the ram between the piezoelectric element and the concentrator K from all sides.
  • the concentrator K can be inclined to the horizontal, i.e. stand at an angle so that the water jet already points in the direction of the outlet openings.
  • the piezoelectric element P could also be at an angle or inclined to the horizontal and direct the water jet in the direction of the outlet opening(s).
  • the invention also includes a non-planar design of the piezoelectric element, such as a parabolic shape, which could shorten the distance between the piezoelectric element and the nebulization unit.
  • Figure 6 shows a further sectional view and illustrates that the outlet openings 60 for the mist can have different heights.
  • high channels can be used which delimit the outlet openings 60 and as the distance from the piezoelectric element P increases, their height can become smaller, as shown Figure 6 emerges.
  • the water tank 40 and the nebulizer unit can form a common unit.
  • the piezoelectric element P is preferably designed so that it is not damaged if it runs dry.
  • the fog generator can be operated until the water is used up or is no longer sufficient to generate fog.
  • Nebulizer unit shown can be separated into individual parts, ie the tank 40, the concentrator K and the deflection 90 can be removed without having to remove electrical components such as the piezoelectric element P or the piezoelectronics.
  • the reference symbol O denotes an opening in the tank 40 in the area of the piezoelectric element P.
  • Figure 8 shows the nebulizer unit, which is an integral part of the tank 40, in a view obliquely from above.
  • the nebulizer unit consists of the nebulizer chamber V, the outlet openings 60, the concentrator K, and the piezoelectric element P and its control.
  • Figure 9 clarifies that when the tank 40 is removed for cleaning, for example by turning, tilting upwards or pushing, an opening marked by the arrow is created from which the residual water in the tank 40 can flow out.
  • all components below this point are designed so that a vessel can be placed underneath so that the water can be drained.
  • FIG. 10 an embodiment can be seen in which the opening O according to Figure 7 is closed by a component B which has the property of transmitting the vibrations generated by the piezoelectric element P to the water contained in the tank 40.
  • this part B prevents, at least for a short time, the residual water from leaking out of the tank 40 at this point.
  • a membrane can be used as component B, which allows there to be a very small amount of water between the piezoelectric element P and the membrane so that the vibrations can be transmitted but prevents water from leaking when the tank is removed becomes. The drop between the piezoelectric element and the The membrane then drips, for example, into a drawer or the like that is located below the mist generator and evaporates there.
  • component B can be arranged directly on the piezoelectric element P.
  • a porous material such as a sponge, can also be used as component B. This absorbs water and allows the vibrations of the piezoelectric element to be transmitted, but prevents the tank from quickly leaking.
  • Figure 11 Use arrows to illustrate the path of the water within the tank to the nebulizer unit.
  • the nebulizable amount of water W is preferably 9 to 14 mm above the tank bottom.

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  • 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)
  • Special Spraying Apparatus (AREA)

Claims (4)

  1. Appareil de réfrigération et/ou de congélation avec
    un corps,
    un espace intérieur réfrigéré entouré par le corps, et
    un générateur de brouillard (20) agencé dans l'espace intérieur réfrigéré, qui présente un élément piézoélectrique (P) et une ouverture de sortie (60) par laquelle le brouillard généré sort du générateur de brouillard (20),
    l'ouverture de sortie (60) étant située dans la direction des ondes sonores émises par l'élément piézoélectrique (P),
    le générateur de brouillard (20) présentant un concentrateur (K) pour focaliser les ondes sonores émises par l'élément piézoélectrique (P) sur un point ou une zone, et
    le concentrateur (K) étant configuré de telle sorte que la focalisation se fait dans une direction qui n'est pas la direction dans laquelle les ondes sonores sont émises par l'élément piézoélectrique (P), le générateur de brouillard présentant un élément de déviation qui est agencé de telle sorte que les ondes sonores focalisées par le concentrateur (K) ou un jet d'eau généré par le concentrateur sont déviés au moyen de l'élément de déviation en direction de l'ouverture de sortie (60) du générateur de brouillard (20), le générateur de brouillard (20) présentant au moins un réservoir (40),
    caractérisé en ce que
    le générateur de brouillard (20) comprend au moins un couvercle (30) fermant le réservoir (40) et un réceptacle (50), le réservoir (40) pouvant être retiré du réceptacle (50) et présentant des moyens de détection de niveau de remplissage tels que des gradins, des repères sur la paroi du réservoir ou des systèmes de flotteurs, et le réceptacle (50) présentant tous les éléments nécessaires au fonctionnement du générateur de brouillard.
  2. Appareil de réfrigération et/ou de congélation selon la revendication 1, caractérisé en ce que le concentrateur (K) est incliné par rapport à l'horizontale.
  3. Appareil de réfrigération et/ou de congélation selon l'une quelconque des revendications 1 à 2, caractérisé en ce que le concentrateur (K) présente au moins une surface parabolique, semi-circulaire, circulaire ou plane, de préférence oblique, sur laquelle les ondes sonores générées par l'élément piézoélectrique (P) viennent frapper.
  4. Appareil de réfrigération et/ou de congélation selon l'une quelconque des revendications précédentes, caractérisé en ce que dans l'espace intérieur réfrigéré se trouve au moins une plaque de séparation horizontale (10) qui sépare l'espace intérieur réfrigéré en au moins deux compartiments fonctionnant de préférence à des températures différentes, le générateur de brouillard (20) étant agencé dans ou sur la plaque de séparation (10).
EP17165038.5A 2016-04-05 2017-04-05 Appareil de réfrigération et/ou de congélation Active EP3228965B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102016004123 2016-04-05
DE102016005405.0A DE102016005405A1 (de) 2016-04-05 2016-05-02 Kühl- und/oder Gefriergerät
DE102016005406 2016-05-02
DE102016009345.5A DE102016009345A1 (de) 2016-04-05 2016-08-02 Kühl- und/oder Gefriergerät

Publications (2)

Publication Number Publication Date
EP3228965A1 EP3228965A1 (fr) 2017-10-11
EP3228965B1 true EP3228965B1 (fr) 2023-11-15

Family

ID=58489627

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17165038.5A Active EP3228965B1 (fr) 2016-04-05 2017-04-05 Appareil de réfrigération et/ou de congélation

Country Status (2)

Country Link
EP (1) EP3228965B1 (fr)
ES (1) ES2970399T3 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2690634B1 (fr) * 1992-04-29 1994-10-14 Chronotec Dispositif de micro-pulvérisation générée par ondes ultra-sonores.
JP3626786B2 (ja) * 1995-04-13 2005-03-09 松下冷機株式会社 急速冷却装置
JP5029165B2 (ja) * 2007-06-22 2012-09-19 パナソニック株式会社 冷蔵庫
JP4962163B2 (ja) * 2007-06-22 2012-06-27 パナソニック株式会社 冷蔵庫および冷蔵庫に搭載される霧化装置
FR3004971B1 (fr) * 2013-04-30 2015-04-03 Areco Finances Et Technologie Arfitec Systeme de nebulisation pour rafraichir l'air
DE102013213206A1 (de) * 2013-07-05 2015-01-08 BSH Bosch und Siemens Hausgeräte GmbH Haushaltskältegerät mit einem im Innenraum ausgebildeten Lagerbereich und einer Befeuchtungsvorrichtung
DE102014017044A1 (de) 2013-11-26 2015-05-28 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät
DE102013225716A1 (de) 2013-12-12 2015-06-18 BSH Hausgeräte GmbH Haushaltskältegerät mit einem Lagerbereich und einer Befeuchtungsvorrichtung, deren Tank zu einer Verneblereinheit bewegbar ist
FR3023735B1 (fr) * 2014-07-17 2016-07-29 Areco Finances Et Tech - Arfitec Nebuliseur compact pour rafraichir l'air

Also Published As

Publication number Publication date
EP3228965A1 (fr) 2017-10-11
ES2970399T3 (es) 2024-05-28

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