EP2936022A1 - Dispositif permettant la réfrigération de produits alimentaires - Google Patents

Dispositif permettant la réfrigération de produits alimentaires

Info

Publication number
EP2936022A1
EP2936022A1 EP13826969.1A EP13826969A EP2936022A1 EP 2936022 A1 EP2936022 A1 EP 2936022A1 EP 13826969 A EP13826969 A EP 13826969A EP 2936022 A1 EP2936022 A1 EP 2936022A1
Authority
EP
European Patent Office
Prior art keywords
compartment
refrigeration
food
resistance
defrosting
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.)
Granted
Application number
EP13826969.1A
Other languages
German (de)
English (en)
Other versions
EP2936022B1 (fr
Inventor
Giorgio Sabatini
Giacomo QUAGLIA
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.)
Whirlpool EMEA SpA
Original Assignee
Indesit Co SpA
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 Indesit Co SpA filed Critical Indesit Co SpA
Publication of EP2936022A1 publication Critical patent/EP2936022A1/fr
Application granted granted Critical
Publication of EP2936022B1 publication Critical patent/EP2936022B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • 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
    • F25D23/00—General constructional features
    • F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
    • 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
    • F25D31/00—Other cooling or freezing apparatus
    • F25D31/005—Combined cooling and heating devices
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/02—Refrigerators including a heater
    • 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
    • F25D2700/12—Sensors measuring the inside temperature
    • F25D2700/121—Sensors measuring the inside temperature of particular compartments

Definitions

  • the present invention relates to a device for refrigeration of food products.
  • this cooling device includes a refrigeration compartment.
  • the refrigeration compartment includes a vertical back wall and rear of this wall is present a Peltier cell and a fan.
  • the Peltier cell extracts heat from the outside of the compartment and warms the inside of the compartment thanks to the help of the fan.
  • the fan indeed creates a fluid flow that invests the hot part of the Peltier cell causing then its entrance into the compartment.
  • the products present in the compartment are cooled by the introduction of refrigerated air.
  • the architectural solution described above is not free from drawbacks.
  • the Peltier cell in defrost mode introduces in the compartment a heated air flow and generates a uniform heating of the whole compartment. Consequently all products inside the compartment will be uniformly invested by a warm flow.
  • Aim of the present invention is to overcome the above-mentioned drawbacks by providing a device for refrigeration of food products, which allows the maximum flexibility of operation.
  • Figure 1 shows a device for refrigeration of food products according to the present invention.
  • Figure 1 a shows a schematic view of the device in figure 1 , with some parts removed to better illustrate others.
  • Figures 2 and 3 show some of the components of a device according to the present invention.
  • Figures 4, 5, 6 show different solutions of components of a device according to the present invention.
  • the reference numeral 1 denotes a device for refrigeration of food products.
  • the device 1 comprises a first compartment 2 for food refrigeration bounded by a bottom wall 21 , an upper ceiling 22, a back wall 23, two side walls 24, 25, a movable opening and closing element 26.
  • the device 1 may comprise a drawer 5 that can be inserted and extracted from the first compartment 2 (in figure 1 a the drawer has been removed for better pointing out portions behind).
  • the movable element 26 could be a front panel of the drawer 5.
  • the front panel performs therefore an airtight with the remaining portions of delimitation of the first compartment 2. In this case to access the first compartment 2 it is sufficient to pull the movable element 26.
  • the movable opening and closing element 26 may include a door.
  • the user before pulling out the drawer 5, may need to open the door.
  • the door is typically hinged around a vertical axis of rotation.
  • the device 1 comprises a second compartment 3 for refrigeration of food, stacked to the first compartment 2 of refrigeration.
  • the second compartment 3 is a freezer compartment.
  • the first compartment 2 overlaps the second compartment 3.
  • the second compartment 3 contains a pull- out drawer.
  • the device 1 also comprises an electrical heating resistor 9 formed in said bottom wall 21 .
  • the bottom wall 21 preferably defines a partition, which separates the first and the second compartment 2, 3.
  • the bottom wall 21 could also display a plurality of layers and in particular could include one or more air gaps.
  • the bottom wall 21 comprises a first portion 212 not affected by said resistor 9 and arranged side by side horizontally to said resistor 9.
  • the vertical projection of said first portion 212 on a horizontal plane can entirely contain at least one imaginary square of size 15x15 centimeters.
  • the imaginary square has a size 25x25 centimeters.
  • the first compartment 2 comprises a region 27 for defrosting of foods that overlaps the resistor 9.
  • the first compartment 2 also comprises a region 28 for conservation of food in refrigerated environment that overlaps said imaginary square.
  • the area 27 for defrosting and the area 28 for conservation are arranged side by side.
  • the area 27 for defrosting develops from the movable opening and closing element 26 up to the back wall 23.
  • the zone 28 for conservation extends from the movable opening and closing element 26 up to the back wall 23.
  • the heating generated by the resistor 9 performs a localized action within said area 27 for defrosting.
  • the placement of the resistor 9 in the bottom wall 21 is very advantageous since in this way the resistor 9 is close to the food to defrost.
  • the heat that spontaneously moves up goes to affect the food to be unfrozen.
  • an imaginary plane that is: vertical, orthogonal to the first face, parallel to a second and a third face of the parallelepiped. The distance between said imaginary vertical plane and said second face is equal to 60% of the distance between the second and the third face; the electrical heating resistor 9 is fully interposed between said imaginary vertical plane and the second face.
  • the device 1 advantageously comprises visual reference means that indicate which portion of the first compartment 2 will be affected by the area 27 for defrosting and which portion of the first compartment 2 will be affected by the area 28 for conservation.
  • these visual reference means could be placed in correspondence of the inlet opening of the first compartment 2.
  • the drawer 5 may comprise visual reference means that inform the user which portion of the drawer 5 will be introduced into region 27 for defrosting and which portion will be introduced into region 28 for conservation.
  • the visual reference means may be an adhesive or graphic signs produced by printing.
  • Figure 3 shows, for example, the resistor 9, which is located inside the bottom wall 21 .
  • the bottom wall 21 comprises a thermally insulating coating.
  • This thermally insulating coating affects at least a zone below the resistor 9.
  • This thermally insulating coating for example is made of polystyrene. The thermally insulating coating makes it possible to prevent the heating, determined by the resistor 9, carries out an undesired heating effect in the second compartment 3.
  • the bottom wall 21 comprises an upper layer interposed between the resistor 9 and said first compartment 2. Conveniently, this top layer is made of plastic material. This arrangement prevents the user from accidentally coming into contact with the resistor 9 during the normal operation of the device 1 .
  • Resistor 9 is preferably embedded in the wall 21 .
  • the minimum distance between said resistor 9 and the first compartment 2 is less than 3 centimeters. In this way the resistor 9 can perform a localized heating in the desired area (the area 27 for defrosting).
  • the electrical resistor 9 has a planar development inside the bottom wall 21 .
  • the electrical heating resistor 9 extends along a spiral line.
  • the spiral has a curvilinear shape.
  • the winding spiral of resistor 9 is given by a succession of straight sections which converge toward a central area.
  • resistor 9 comprises a first portion and a second portion 91 , 92 which are parallel to each other and that extend along said spiral line.
  • the first and the second portion 91 , 92 are joined at a central zone 93 of the spiral.
  • the resistor 9 extends along a twisting line e.g. sinusoidal.
  • the resistor 9 includes at least three concavities in one direction and three other concavities facing in the opposite direction.
  • the outer coil 90 of the spiral identifies advantageously an area larger than 1 ⁇ 4 of the vertical projection of the bottom wall 21 on a horizontal plane.
  • the outer coil 90 of the spiral identifies an area greater than 200 cm 2 .
  • the outer coil 90 of the spiral identifies an area less than 600 cm 2 .
  • this allows to identify an area sufficient to accommodate a plate or a small baking pan (which could therefore contain the food to defrost).
  • the device 1 comprises a temperature sensor placed in the first compartment 2.
  • this temperature sensor 6 is placed in the zone 27 of defrosting.
  • the temperature sensor 6 is located above the drawer 5 when the latter is completely inserted into the first compartment 2.
  • the sensor 6 is placed in correspondence of the upper ceiling 22.
  • the device 1 comprises thermoregulation means 7 operatively connected to the temperature sensor 6 and which implement corrective actions of stabilization of the temperature detected by the sensor 6 to a preset temperature value.
  • thermoregulation means 7 comprise the resistor 9 stated above.
  • the thermoregulation means 7 also comprise control means that compare the value detected by the sensor with a range of values containing said temperature preset value. This range of values includes an upper and a lower limit. At the detection by the sensor 6 of the reaching the lower limit of the interval the control means activate the resistor 9. Upon reaching the upper limit of this range of values the control means deactivates the resistor 9. In the preferred solution this predetermined interval of values is between 0 ⁇ C an d 4 ⁇ C.
  • thermoregulation means 7 comprise at least one first port 70 for the introduction of a refrigerant fluid in the first compartment 2. If necessary the control means could activate the introduction of the refrigerant fluid through the first introduction port 70.
  • the port 70 is formed on the back wall 23.
  • the first port 70 introduces the refrigerant fluid in the first compartment 2 directing it toward the movable opening and closing element 26.
  • the first port 70 is advantageously located above the maximum size defined by the draw 5 when the latter is placed in the first compartment 2.
  • the device 1 comprises a second port 71 that introduces the refrigerant fluid in the first compartment 2.
  • the first and the second ports 70, 71 are arranged side by side.
  • the bottom wall 21 provides at least one way that put in fluid communication the first and the second compartment 2, 3. This passage for example enables the outflow from the first compartment 2 of refrigerant fluid introduced through the first and/or the second port 70, 71 .
  • the device 1 may comprise a selector which can be operated by the user that switches operation of thermoregulation means 7 between at least one plurality of operating modes, each operating mode being associated with a respective different conservation conditions of food products contained in the first compartment 2.
  • the plurality of operating modes comprises, for example, a first operating mode in which the conservation condition corresponds to a preset temperature value greater than or equal to -1 ⁇ C, and less than or equal to +3 ⁇ C (th e first compartment 2 thus behaves like "Chiller" compartment).
  • the plurality of operating modes may comprise a second operating mode; in the second operating mode the conservation condition corresponding to a preset temperature value greater than or equal to -35 ⁇ C and less than or equal to -15 *C (in this case, the first compartment 2 implements a function of fast cooling).
  • the plurality of operating modes comprises, for example, a third operating mode; in the third operating mode the conservation condition corresponds to a preset temperature value between +3 and +6 ⁇ C.
  • first operating mode the second operating mode
  • third operating mode the numeral adjective is used only to distinguish from one another the various operating modes.
  • the possibility to implement an operating mode identified by the numeral adjective of greater degree does not necessarily imply the possibility of implementing the operating mode identified by the numeral adjective of minor degree.
  • the device 1 comprises a third compartment 4 for refrigeration of food products stacked with the first and the second compartment 2, 3 for refrigeration.
  • the third compartment 4 of refrigeration overlaps the first compartment 2.
  • the third compartment 4 is a refrigerator compartment which maintains a conservation temperature above 0 (typically from 3 « C to 6 « C).
  • the first compartment 2 for refrigeration is therefore interposed between the second and the third compartment 3, 4 for refrigeration.
  • the third compartment 4 is a compartment with a door with two shutters.
  • the present invention allows to achieve multiple benefits. First of all, it allows you to use the same compartment to perform at the same time a fast and effective defrosting of food products and even the low- temperature conservation of other food products.
  • the device according to the present invention also allows you to have a "Jolly" compartment that where necessary may be used or as freezer or as refrigerator. This therefore allows to expand the capacity of the freezer compartment and the refrigerator compartment present in the same device 1 .

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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • General Preparation And Processing Of Foods (AREA)
  • Freezing, Cooling And Drying Of Foods (AREA)

Abstract

La présente invention se rapporte à un dispositif permettant la réfrigération de produits alimentaires, ledit dispositif comprenant : un premier compartiment (2) permettant la réfrigération d'aliments qui est délimité par une paroi inférieure (21), un plafond supérieur (22), une paroi arrière (23), deux parois latérales (24, 25), un élément d'ouverture et de fermeture amovible (26) ; un second compartiment (3) permettant la réfrigération d'aliments qui est empilé sur le premier compartiment de réfrigération (2) ; une résistance chauffante électrique (9) formée dans ladite paroi inférieure (21). La paroi inférieure (21) comprend une première partie (212) qui n'est pas affectée par ladite résistance (9) et est disposée horizontalement côte à côte par rapport à ladite résistance (9). La saillie verticale de ladite première partie (212) sur un plan horizontal contient entièrement au moins un carré imaginaire dont les dimensions font 15 x 15 centimètres. Le premier compartiment (2) comprend une zone (27) destinée à la décongélation des aliments qui recouvre au moins une partie de la résistance (9) et une région (28) destinée à la conservation des aliments dans l'environnement réfrigéré qui recouvre au moins une partie du carré imaginaire ; la zone destinée à la décongélation et la zone destinée à la conservation (28) étant agencées côte à côte.
EP13826969.1A 2012-12-20 2013-12-20 Dispositif permettant la réfrigération de produits alimentaires Active EP2936022B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000086A ITPR20120086A1 (it) 2012-12-20 2012-12-20 Dispositivo di refrigerazione di prodotti alimentari.
PCT/IB2013/061173 WO2014097230A1 (fr) 2012-12-20 2013-12-20 Dispositif permettant la réfrigération de produits alimentaires

Publications (2)

Publication Number Publication Date
EP2936022A1 true EP2936022A1 (fr) 2015-10-28
EP2936022B1 EP2936022B1 (fr) 2020-08-05

Family

ID=47633305

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13826969.1A Active EP2936022B1 (fr) 2012-12-20 2013-12-20 Dispositif permettant la réfrigération de produits alimentaires

Country Status (3)

Country Link
EP (1) EP2936022B1 (fr)
IT (1) ITPR20120086A1 (fr)
WO (1) WO2014097230A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109323518A (zh) * 2017-07-31 2019-02-12 青岛海尔智能技术研发有限公司 解冻装置及具有该解冻装置的冰箱
KR102678956B1 (ko) * 2019-02-28 2024-06-28 엘지전자 주식회사 냉장고의 제어 방법

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001043963A (ja) * 1999-07-30 2001-02-16 Mitsubishi Electric Corp 冷蔵庫
EP1806553A4 (fr) * 2004-10-28 2015-03-04 Sharp Kk Refrigerateur
KR20110035032A (ko) * 2009-09-29 2011-04-06 엘지전자 주식회사 냉장고 및 그 운전 방법

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014097230A1 *

Also Published As

Publication number Publication date
EP2936022B1 (fr) 2020-08-05
WO2014097230A1 (fr) 2014-06-26
ITPR20120086A1 (it) 2014-06-21

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