WO2018033397A1 - Dispositif de refroidissement comprenant un mécanisme de fabrication de glace transparente - Google Patents

Dispositif de refroidissement comprenant un mécanisme de fabrication de glace transparente Download PDF

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Publication number
WO2018033397A1
WO2018033397A1 PCT/EP2017/069597 EP2017069597W WO2018033397A1 WO 2018033397 A1 WO2018033397 A1 WO 2018033397A1 EP 2017069597 W EP2017069597 W EP 2017069597W WO 2018033397 A1 WO2018033397 A1 WO 2018033397A1
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WO
WIPO (PCT)
Prior art keywords
ice
cooling device
partition
metallic element
ice tray
Prior art date
Application number
PCT/EP2017/069597
Other languages
English (en)
Inventor
Mert PATKAVAK
Mert Can TASKIN
Erkan KARAKAYA
Sabahattin Hocaoglu
Umutcan Salih ERYILMAZ
Original Assignee
Arcelik Anonim Sirketi
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 Arcelik Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Publication of WO2018033397A1 publication Critical patent/WO2018033397A1/fr

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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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C5/00—Working or handling ice
    • F25C5/02—Apparatus for disintegrating, removing or harvesting ice
    • F25C5/04—Apparatus for disintegrating, removing or harvesting ice without the use of saws
    • F25C5/08—Apparatus for disintegrating, removing or harvesting ice without the use of saws by heating bodies in contact with the ice
    • 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C1/00—Producing ice
    • F25C1/04—Producing ice by using stationary moulds
    • 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C5/00—Working or handling ice
    • F25C5/02—Apparatus for disintegrating, removing or harvesting ice
    • F25C5/04—Apparatus for disintegrating, removing or harvesting ice without the use of saws
    • F25C5/06—Apparatus for disintegrating, removing or harvesting ice without the use of saws by deforming bodies with which the ice is in contact, e.g. using inflatable members
    • 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C1/00—Producing ice
    • F25C1/18—Producing ice of a particular transparency or translucency, e.g. by injecting air
    • 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C5/00—Working or handling ice
    • F25C5/20—Distributing ice
    • F25C5/22—Distributing ice particularly adapted for household refrigerators

Definitions

  • the present invention relates to cooling devices, in particular refrigerators, wherein ice is produced for making ice cubes by means of water flow over a vertical tray.
  • clear ice pieces are produced by flowing water over a vertical metal mold connected to an evaporator and by cooling the metal surface.
  • Clear ice pieces can be obtained by removing the air dissolving in the water and cleansing the water of foreign materials such as dust, chlorine, some minerals, etc. as much as possible during or before freezing the water.
  • the ice obtained has a clear and aesthetic appearance to the extent that the air content in the crystallized ice is removed.
  • the ice crystallizing while freezing transfers the air therein to the water.
  • the air dissolving in the water accumulates in the remaining water and particularly in the thin layer just above the freezing surface. If the concentration of the dissolved air exceeds a certain value, bubble formation occurs. A large number of small bubbles are formed during quick freezing and the obtained ice has a foggy appearance.
  • fractional freezing method The dissolved air separated from the ice when the water being frozen is not stagnant but flows is carried with the water and does not accumulate on the ice. Thus, bubble formation is prevented.
  • various methods are used to decide whether sufficient amount of ice is produced and to terminate the ice making process. When ice production process is completed, a discharge mechanism is activated and the ice tray is enabled to be emptied.
  • the Patent Publication No. US4947653A discloses an ice maker including freeze and harvest controls.
  • the evaporator includes a unitary evaporator and ice mold.
  • a compressor and condenser cool the evaporator to freeze ice on the mold in a normal refrigeration cycle and the mold is defrosted by hot gas to harvest ice from the ice mold.
  • the temperature of the ice mold and the liquid line temperature of the condenser are sensed to control the length of time of the ice forming cycle.
  • the harvest cycle includes a defrost period followed by a delay period.
  • logic control actuates the hot gas solenoid control.
  • Solenoid connects the evaporator to the compressor discharge line to supply superheated refrigerant gas to heat the evaporator and its associated ice forming molds.
  • ice formed during the freeze cycle will slide out of the ice forming molds.
  • the aim of the present invention is to decrease the energy required for the ice cube harvest cycle in the clear ice production.
  • the present invention realized in order to attain the said aim is a cooling device, in particular a refrigerator, comprising a thermally-insulated cabin and a clear ice making mechanism that is provided in the cabin and that comprises an ice tray vertically arranged such that the water supplied by a water distributor disposed thereabove passes through a plurality of successive partitions thereon so as to flow longitudinally.
  • a preferred embodiment of the present invention comprises a heating element positioned close to the ice tray and a metallic element that expands when the heating element is activated and changes its form in the ice tray so as to separate the ice cube formed in the partition from the partition.
  • the metallic element expands and changes form with the thermal energy received from the heating element, for example displaces, and thus enabling the ice cube to be separated from the ice tray.
  • the need for heating the ice tray to melt the ice in the ice harvest cycle is eliminated and the ice cubes are discharged by being pushed by force.
  • the metallic element is fixed on the inside of the partition so as to bend outwards by displacing when heated.
  • the metallic element not only separates the ice cube from the partition but also enables the ice cube to be pushed out of the partition.
  • the metallic element can be placed on the ice tray so as to deform the ice tray to displace the ice cubes.
  • the metallic element is provided at the base of the partition so as to contact the ice cube.
  • the displacement occurring due to expansion can be used to efficiently discharge the ice cube by being pushed from the base.
  • the metallic element can be placed into the partition so as to cover not only the base, but also one of the adjacent side walls or all the surfaces.
  • the heating power of the heating element is configured to provide such a heat on the metallic element to increase the displacement of the metallic element between 0.01 mm and 1 mm. This amount is sufficient to separate the ice cube from a tray that is used to achieve the dimensions of an ice cube used in a household.
  • the heating element is adjacent to a rear wall of the ice tray.
  • the metallic element is enabled to be heated so as to expand without melting the ice cubes.
  • a bottom wall of the partition is formed with a downward inclination such that the ice cube falls out of the partition by its own weight when pushed by the metallic element.
  • the metallic element not only separates the ice cube from the partition, but also triggers the same to fall out of the ice tray by its own weight.
  • the heating element comprises an electrical resistance.
  • the metallic element is enabled to expand so as to separate the ice cubes from the partitions and the ice cubes are harvested from the ice tray and collected in an ice receptacle.
  • the electrical resistance is deactivated after supplying a thermal energy to enable the ice cubes to be separated from the partitions.
  • the ice tray is produced from metal.
  • the heating element heats any region on the ice tray, the heat radiates over the entire ice tray by heat conduction and the metallic elements in all the partitions can be expanded.
  • the metallic element comprises a bimetallic strip or shape memory alloy. These materials provide an efficient displacement with a small amount of thermal energy, thus decreasing the thermal energy required for the ice harvest cycle.
  • Figure 1 - is the perspective view of a refrigerator cabin comprising the clear ice making mechanism of the present invention.
  • Figure 2 - is the perspective view of a representative embodiment of the clear ice making mechanism.
  • Figure 3 - is the top view of an ice tray comprising shape memory metallic component.
  • Figure 4 - is the transversal cross-section view of the ice tray in Figure 3 in the heated state.
  • FIG. 1 shows the front perspective view of a thermally-insulated cabin (1) of a refrigerator comprising a clear ice making mechanism (10).
  • the cabin (1) is divided into two adjacent compartments, namely an upper compartment (2) and a lower compartment (3).
  • a water tank (50) extends over an ice drawer (4) in a detachable manner along the depth of the lower compartment (3).
  • the water tank (50) has an upper opening (52) and an ice tray (40) vertically positioned in the lower compartment (3) is aligned over the upper opening (52) of the water tank (50).
  • partitions (44) suitable for ice cube production are arranged in the form of a matrix.
  • the clear ice making mechanism (10) comprises a water distributor (20) at the upper part thereof.
  • the water distributor (20) supplies water at a low flow rate onto the ice tray (40) through the outlets arranged at the lower part thereof.
  • a film-like water flow constantly passes over the partitions (44).
  • an evaporator (5) bears against the ice tray (40) so as to provide heat transfer.
  • the ice tray (40) is produced from metal.
  • FIG. 2 shows a representative embodiment of the box-like clear ice making mechanism (10) used in the cooling device of the present invention.
  • a plastic water distributor (20) is disposed at the upper part of the clear ice making mechanism (10).
  • the water distributor (20) comprises a receptacle (24) wherein the water supplied through an inlet (22) connected to a water container (not shown in the figures) is transferred.
  • the receptacle (24) transversely extends.
  • a front plate (26) is disposed on the front part (34) of the receptacle (24).
  • a cavity extends inwards from the lower side of the front plate (26) and along the lower side of the cavity an inclined planar water distribution part (46) extends on the upper surface of the ice tray (40).
  • the planar front wall (41) of the ice tray (40) extends in an inclined and perpendicular manner towards the water tank (50).
  • Partitions (44) arranged in the form of a matrix opening at the front wall (41) of the ice tray (40) are separated from each other by means of an adjacent intermediate wall (47).
  • Each partition (44) is in the form of a cavity suitable for producing an ice cube.
  • the partitions (44) comprise a planar base (45) and side walls rising from the base (45). The lowermost one of the side walls is a downward inclined lower wall (49).
  • An evaporator (5) is disposed in the vicinity of a rear wall (48) of the ice tray (40). The evaporator (5) is connected to the refrigeration cycle (not shown in the figures) of the refrigerator.
  • FIG 3 shows the top view of an alternative ice tray (40).
  • a metallic element (30) is fixed onto the base (45) so as to face outside from the front part (34) thereof.
  • the metallic element (30) is in the form of a short bimetallic strip having a planar rear part (32) and seated onto the base (45).
  • the size of the metallic element (30) is configured so as to fit onto the base (45) in the normal position when not heated.
  • the front part (34) expands and takes a convex shape and pushes the ice cube in the partition (44) in the axial direction.
  • the heating process is performed by means of a heating element (60).
  • the heating element (60) is an electrical resistance in tube (62) form and disposed on the rear wall (48) in serpentine form. Cavities are formed on the rear wall (48) of the ice tray (40) so as to receive the tube (62) form.
  • the refrigerator delivers water from the water distributor (20) to the water distribution part (46).
  • the water distribution part (46) enables the water to spread and flow in the form of a film over the front wall (41) of the ice tray (40). While the water passes through the partitions (44), ice formation occurs on the surface that the flowing water contacts since the evaporator (5) is active.
  • the partitions (44) collect ice and create a clear ice cube. Subsequently, the ice harvest cycle is started and the heating element (60) is operated by supplying electricity.
  • the rear wall (48) of the metallic ice tray (40) transfers the heat to the metallic element (30) disposed on the base (45).
  • the metallic element (30) is squeezed along its circumferential edges at the base (45) and bends outwards.
  • the metallic element (30) contacts the ice cube from behind and pushed the same out of the partition (44) and separates the partition (44) and the ice cube from each other.
  • the ice cube slides over the downward inclined bottom wall (49) due to its weight so as to be taken into the ice drawer (4). Since a similar structure is disposed in all the partitions (44), all the ice cubes in the partitions (44) can be discharged with the same mechanical system.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

L'invention concerne également un dispositif de refroidissement, en particulier un réfrigérateur, comprenant une cabine thermiquement isolée (1) et un mécanisme de fabrication de glace transparente (10) qui est disposé dans la cabine (1). Le mécanisme de fabrication de glace transparente (10) comprend un bac à glace (40) agencé verticalement de telle sorte que l'eau fournie par un distributeur d'eau (20) disposé au-dessus passe à travers une pluralité de cloisons successives (44) sur celui-ci de manière à s'écouler longitudinalement. Le mécanisme comprend aussi un élément chauffant (60) positionné à proximité du bac à glace (40) et un élément métallique (30) qui se dilate lorsque l'élément chauffant (60) est activée et change sa forme dans le bac à glace (40) de façon à séparer le cube de glace formé dans une cloison de la pluralité de cloisons successives (44).
PCT/EP2017/069597 2016-08-18 2017-08-03 Dispositif de refroidissement comprenant un mécanisme de fabrication de glace transparente WO2018033397A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2016/11669A TR201611669A2 (tr) 2016-08-18 2016-08-18 Saydam buz üretme terti̇batina sahi̇p bi̇r soğutucu ci̇haz
TRA2016/11669 2016-08-18

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WO2018033397A1 true WO2018033397A1 (fr) 2018-02-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110260575A (zh) * 2019-07-04 2019-09-20 山东冷银制冷设备有限公司 一种低成本高效脱冰装置及脱冰方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4947653A (en) 1989-06-26 1990-08-14 Hussmann Corporation Ice making machine with freeze and harvest control
JPH062073U (ja) * 1992-06-17 1994-01-14 ホシザキ電機株式会社 製氷機の離氷装置
JP2003161554A (ja) * 2001-11-27 2003-06-06 Matsushita Refrig Co Ltd 製氷皿及びこの製氷皿を備えた自動製氷装置及びこの自動製氷装置を備えた冷蔵庫
KR20040067650A (ko) * 2003-01-24 2004-07-30 삼성전자주식회사 제빙기
US20120297815A1 (en) * 2011-05-24 2012-11-29 General Electric Company Ice Making Assembly with Bimetallic Actuating Element and Refrigeration Appliance Incorporating Same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4947653A (en) 1989-06-26 1990-08-14 Hussmann Corporation Ice making machine with freeze and harvest control
JPH062073U (ja) * 1992-06-17 1994-01-14 ホシザキ電機株式会社 製氷機の離氷装置
JP2003161554A (ja) * 2001-11-27 2003-06-06 Matsushita Refrig Co Ltd 製氷皿及びこの製氷皿を備えた自動製氷装置及びこの自動製氷装置を備えた冷蔵庫
KR20040067650A (ko) * 2003-01-24 2004-07-30 삼성전자주식회사 제빙기
US20120297815A1 (en) * 2011-05-24 2012-11-29 General Electric Company Ice Making Assembly with Bimetallic Actuating Element and Refrigeration Appliance Incorporating Same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110260575A (zh) * 2019-07-04 2019-09-20 山东冷银制冷设备有限公司 一种低成本高效脱冰装置及脱冰方法

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TR201611669A2 (tr) 2018-03-21

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