EP2894424B1 - Réfrigérateur - Google Patents

Réfrigérateur Download PDF

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Publication number
EP2894424B1
EP2894424B1 EP13836161.3A EP13836161A EP2894424B1 EP 2894424 B1 EP2894424 B1 EP 2894424B1 EP 13836161 A EP13836161 A EP 13836161A EP 2894424 B1 EP2894424 B1 EP 2894424B1
Authority
EP
European Patent Office
Prior art keywords
heat insulating
plate
outer plate
insulating material
knob
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
EP13836161.3A
Other languages
German (de)
English (en)
Other versions
EP2894424A4 (fr
EP2894424A1 (fr
Inventor
Yang Liu
Tokimi ABE
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.)
Toshiba Lifestyle Products and Services Corp
Original Assignee
Toshiba Lifestyle Products and Services Corp
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 Toshiba Lifestyle Products and Services Corp filed Critical Toshiba Lifestyle Products and Services Corp
Publication of EP2894424A1 publication Critical patent/EP2894424A1/fr
Publication of EP2894424A4 publication Critical patent/EP2894424A4/fr
Application granted granted Critical
Publication of EP2894424B1 publication Critical patent/EP2894424B1/fr
Not-in-force 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
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • F25D23/028—Details
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B95/00—Fittings for furniture
    • A47B95/02—Handles
    • 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
    • A47F3/043—Doors, covers
    • 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
    • F25D23/02—Doors; Covers
    • 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
    • F25D23/062—Walls defining a cabinet
    • 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
    • F25D2201/00—Insulation
    • F25D2201/10—Insulation with respect to heat
    • F25D2201/14—Insulation with respect to heat using subatmospheric pressure

Definitions

  • An embodiment described herein generally relates to a refrigerator.
  • a refrigerator is configured to interpose a heat insulating material in a space between an outer case and an inner case constituting a heat insulating case body as a main body of the refrigerator, in order to enhance heat insulating performance and energy saving.
  • a door which seals an opening part of the heat insulating case body of the refrigerator is also configured to interpose a heat insulating material between an outer plate and an inner plate.
  • a liquid foam heat insulating material is used as a heat insulating material in a refrigerator in many cases, but a vacuum heat insulating material has been considered to be used instead of the liquid foam heat insulating material in recent years.
  • a technique of using both urethane foam and a vacuum heat insulating material for a door of a refrigerator is proposed in JP2006-90649A , for example.
  • the vacuum heat insulating material is configured to vacuum-packing a core material with a thin outer wrapping film.
  • This vacuum heat insulating material is better in heat insulating performance than the urethane foam, but the outer wrapping film is easily cracked, and the urethane foam, but the outer wrapping film is easily cracked, and the vacuum heat insulating material loses heat insulating performance significantly in a case that the outer wrapping film is cracked and damaged.
  • the outer wrapping film may be damaged when the vacuum heat insulating material is arranged at a position where the vacuum heat insulating material contacts a screw located at an attaching part of a knob.
  • DE 19931170 A1 discloses a refrigerator with a housing and a door.
  • a vacuum heat-insulating material is interposed between an outer plate and an inner plate forming the door and the insulating material fills the entire space between these plates.
  • the document states that a handle can be attached to the outer plate of the door.
  • JP 2003-106760 A relates to a refrigerating apparatus and shows that a door of a refrigerating apparatus is attached to an outer box by a hinge. It also shows that an insulation material such as a polyurethane resin insulation material, a vacuum insulation material etc. is arranged in the interior of the door.
  • the present invention has been made in taking such problems of the prior art into consideration, and is to provide a refrigerator which is good in heat insulating effect and which prevents a vacuum heat insulating material from being damaged.
  • a refrigerator according to the invention is a refrigerator including the features of claim 1.
  • a refrigerator 1 includes a heat insulating case body 3 having an inner case and an outer case and doors 21 to 26. A front side of the heat insulating case body 3 is opened, and an inside of the heat insulating case body 3 is partitioned into chambers.
  • a vacuum heat insulating material 35 referred to as a VIP (vacuum insulation panel) illustrated by a dashed line in Fig. 2 is interposed as a heat insulating material in an approximately entire opposed space between the inner case and the outer case of the heat insulating case body 3.
  • a VIP vacuum insulation panel
  • FIG. 2 An upper surface plate, a bottom surface plate, a left side surface plate, and a back surface plate are respectively provided with vacuum heat insulating materials as well.
  • This heat insulating case body 3 is partitioned into five chambers consisting of a cold storage chamber 11, a vegetable chamber 12, an ice making chamber 13 and a first freezing chamber 14 provided in parallel horizontally, and a second freezing chamber 15 in this order from the upper side.
  • the opening on the front side of the cold storage chamber 11 is provided with French type first cold storage chamber door 21 and second cold storage chamber door 22.
  • the openings on the front sides of the vegetable chamber 12, the ice making chamber 13, the first freezing chamber 14, and the second freezing chamber 15 are respectively provided with drawing type vegetable chamber door 23, ice making chamber door 24, first freezing chamber door 25, and second freezing chamber door 26.
  • the second freezing chamber door 26 will be described as an example to describe a structure of the drawing type door.
  • the second freezing chamber door 26 includes an outer plate 31, an inner plate 32, an inner frame 33, the vacuum heat insulating material 35, a gasket 37, and a knob 39 as illustrated in Figs. 3 to 5 .
  • a direction in which the outer plate 31 in the second freezing chamber door 26 is located is referred to as a front side while an inside direction of the refrigerator 1 in which the inner plate 32 is located is referred to as a back side.
  • the second freezing chamber door 26 has the vacuum heat insulating material 35 interposed between the outer plate 31 and the inner plate 32.
  • the inner frame 33 is fitted in the outer plate 31 to press the inner plate 32 to the outer plate 31 from a back side of the inner plate 32.
  • the inner frame 33 is provided with a throat portion 33b projecting to a back surface side of the inner frame 33 (a surface located in an inner side in the second freezing chamber door 26) and has the gasket 37 fitted in the inner frame 33 in the vicinity of an outer circumference on the back surface side of the inner frame 33.
  • the front side of the outer plate 31 is provided with the knob 39.
  • the outer plate 31 is an approximately box-shaped plate including a flat plate portion 31a which is an approximately rectangular flat-surface plate and a side wall 31b extending backward from an outer circumferential edge of the flat plate portion 31a. Openings 31c to which the knob 39 is attached are formed near an upper end of the flat plate portion 31a and near right and left ends of the flat plate portion 31a.
  • the knob 39 is a grip handle made of a tubular hollow or solid and approximately U-shaped member and includes a grip 39a extending in parallel with the flat plate portion 31a of the outer plate 31 and legs 39b extending backward from both the ends of the grip 39a.
  • a back end portion of each leg 39b is provided with a recess 39c, and a screw hole 39d in which a screw 41 is screwed is formed at a surface (a front side) located at the bottom of the recess 39c.
  • This knob 39 is fixed to the outer plate 31 by a boss 40 and the screw 41 as attaching members.
  • the boss 40 includes a ring portion 40a, a cylindrical portion 40b standing forward from an inner rim of the ring portion 40a, a circular-plate-shaped contacting portion 40c closing a front end surface of the cylindrical portion 40b, and a screw hole 40d formed in the bordering portion 40c.
  • This boss 40 is bonded and fixed to the outer plate 31 in a state in which an adhesive member such as a double-sided tape is attached to a front surface (a surface on a side on which the cylindrical portion 40b is formed) of the ring portion 40a and in which the cylindrical portion 40b passes through the opening 31c of the outer plate 31.
  • the knob 39 is fixed by the screw 41 in a state in which the cylindrical portion 40b of the boss 40 is covered with the recess 39c of the knob 39. Since the screw 41 is in a state of staying inside the cylindrical portion 40b of the boss 40, a head of the screw 41 does not project further backward than the flat plate portion 31a of the outer plate 31.
  • the vacuum heat insulating material 35 is arranged over an approximately entire area on a back surface side of the outer plate 31, and the inner plate 32 is arranged on a back surface side of this vacuum heat insulating material 35.
  • the vacuum heat insulating material 35 is bonded to the outer plate 31 and is similarly bonded to the boss 40.
  • the vacuum heat insulating material 35 is structured by vacuum-packing a core material with an outer wrapping film, and the outer wrapping film may be cracked when a projection, a screw etc. contacts the outer wrapping film.
  • a soft tape 36 such as a sponge tape is wound on a side surface of the vacuum heat insulating material 35. Winding the soft tape 36 on the side surface in this manner can protect the outer wrapping film of the vacuum heat insulating material 35 from a connecting part of the outer plate 31 with the inner plate 32 and another member.
  • the vacuum heat insulating material 35 is bonded not only to the outer plate 31 but also to the inner plate 32 as well if necessary.
  • the inner frame 33 is a rectangular frame body, has a groove as a gasket fitting portion 33a on a back side near an outer circumferential edge of the inner frame 33, and includes the throat portion 33b on an inner side of the gasket fitting portion 33a.
  • the inner frame 33 has a foam heat insulating material 33c filled inside the throat portion 33b. This inner frame 33 is arranged to press the inner plate 32 bonded to the vacuum heat insulating material 35 to the back surface of the outer plate 31 and is fitted with the side wall 31b of the outer plate 31.
  • the gasket 37 is a frame body having a hollow and sealed air cushion portion 37a and has an arrowheaded inserting portion 37b.
  • the gasket 37 also includes a magnet 37c adapted to attach to a circumferential surface of the opening of the heat insulating case body 3 on a back surface of the air cushion portion 37a.
  • This gasket 37 is a flexible material and is attached to the inner frame 33 by pushing the inserting portion 37b into the gasket fitting portion 33a of the inner frame 33 with use of the flexibility.
  • a door of a conventional refrigerator has a structure in which a knob is formed to be connected to an upper end surface.
  • a part (an upper end vicinity part) of an outer plate in the vicinity of the knob is formed to be set backward (in an inner side of the door) to facilitate gripping of the knob in some cases.
  • a distance between the outer plate and an inner plate i.e.
  • a thickness of the door is not constant, a large space in which any vacuum heat insulating material is not provided exists even when the flat-plate-shaped vacuum heat insulating material is arranged inside the door.
  • the flat-plate-shaped vacuum heat insulating material 35 can be arranged in a wide range in the door, i.e., in an approximately entire area, when the flat plate portion 31a of the outer plate 31 and the inner plate 32 are arranged in parallel. An edge of the vacuum heat insulating material 35 extends to a position closer to an edge of the outer plate 31 than a position of the grip 39a of the knob 39.
  • the second freezing chamber door 26 is formed in a box shape by the outer plate 31, the vacuum heat insulating material 35, the inner plate 32 etc. in the above embodiment, the second freezing chamber door 26 may be configured to connect the outer plate 31 formed in a flat plate with the inner frame 33 by means of a side surface plate etc.
  • the door according to the present embodiment has only to include the outer plate 31 having at least a flat plate part and the inner plate 32, and the flat plate part of the outer plate 31 and the inner plate 32 have only to be arranged in parallel to interpose the flat-plate-shaped vacuum heat insulating material 35 between the flat plate part and the inner plate 32.
  • the knob 39 is a grip handle. Specifically, the knob 39 is not formed to project forward from the upper end surface of the door but is formed to have the grip 39a (grip portion) spaced apart from the outer plate 31. Accordingly, the outer plate 31 does not need to be provided with a recess or a groove which helps a user to put his/her fingers easily and can be formed in a flat plate shape.
  • the vacuum heat insulating material 35 can be prevented from being cracked by the head of the screw 41 etc.
  • the second freezing chamber door 26 has been described as an example of the drawing type door, a similar configuration to that in the above embodiment can be applied to a knob for a French type door or a rotary type door.
  • the first cold storage chamber door 21 in the present embodiment described in Fig. 1 has the vacuum heat insulating material 35 interposed between the outer plate 31 and the inner plate 32 and has the knob 39 attached to the outer plate 31 in a similar manner to the first embodiment.
  • Positions (corner portions adjacent to attaching portions of the knob 39 on an upper side in the present embodiment) in the vacuum heat insulating material 35 corresponding to the attaching portions of the knob 39 are formed to be cut out in triangular shapes.
  • Any vacuum heat insulating material 35 is not arranged directly below the attaching portions of the knob 39, and instead a foam heat insulating material 45 such as urethane foam or another heat insulating material is filled.
  • the vacuum heat insulating material 35 is formed to cut out both the upper ends of the vacuum heat insulating material 35 in triangular shapes, and spaces in which no vacuum heat insulating material 35 is arranged are formed directly below the attaching portions of the knob 39. Consequently, the attaching members and the vacuum heat insulating material 35 can be spaced apart from each other, which can prevent the attaching members (the boss 40 and the screw 41) of the knob 39 from contacting the vacuum heat insulating material 35 to cause the film of the vacuum heat insulating material 35 to be damaged.
  • the knob 39, the attaching members of the knob 39, and the others have common configurations to those in the first embodiment.
  • Fig. 9 which shows an example that is not part of the claimed invention, the boss 40 as the attaching member is not used, and the screw 41 is directly attached to the leg 39b of the solid knob 39.
  • urethane foam not only the urethane foam but also polystyrene foam, polypropylene foam etc. can be adopted for the foam heat insulating material.
  • an adhesive technique with use of hot-melt adhesive, a double-sided tape, a film-shaped adhesive etc. can be adopted for bonding of the vacuum heat insulating material to the outer plate and the inner plate.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Refrigerator Housings (AREA)

Claims (5)

  1. Réfrigérateur (1) comprenant :
    un corps de boîtier d'isolation thermique (3) et une porte (26), le corps de boîtier d'isolation thermique (3) comprenant un boîtier interne, un boîtier externe et un matériau d'isolation thermique (35) disposé entre le boîtier interne et le boîtier externe, le corps de boîtier d'isolation thermique (3) étant ouvert sur un côté frontal, la porte (26) étant capable de fermer une ouverture du corps de boîtier d'isolation thermique (3),
    dans lequel la porte (26) comprend une plaque externe de forme plate (31), une plaque interne de forme plate (32) disposée parallèlement à la plaque externe (31), un matériau d'isolation thermique à vide (35) conçu pour être intercalé entre la plaque externe (31) et la plaque interne (32), et un bouton (39) fixé à la plaque externe (31),
    dans lequel un bord du matériau d'isolation thermique à vide (35) s'étend vers une position plus proche d'un bord de la plaque externe (31) qu'une position d'une poignée (39a) du bouton (39),
    caractérisé en ce que
    le bouton (39) est fixé à la plaque externe (31) par un élément de fixation (40, 41) pénétrant dans une portion de plaque plate (31a) de la plaque externe (31),
    dans lequel l'élément de fixation comprend un bossage (40) et une vis (41),
    dans lequel le bossage (40) comprend une portion annulaire (40a), une portion cylindrique (40b) dépassant vers l'avant d'un bord interne de la portion annulaire (40a), une portion de bord en forme de plaque circulaire (40c) pour la fermeture d'une portion d'extrémité de la portion cylindrique (40b), un trou de vis (40d) réalisé au niveau d'un centre de la portion de bord (40c),
    dans lequel une ouverture (31c) dans laquelle la portion cylindrique (40b) du bossage (40) est insérée, est réalisée au niveau d'une position dans la plaque externe (31), qu'un montant (39b) du bouton (39) délimite,
    dans lequel le bouton (39) présente une rainure (39c) dans laquelle la portion cylindrique (40b) du bossage (40) est insérée et qui est réalisée au niveau d'une portion d'extrémité du montant (39b), le bouton (39) est fixé par la vis (41) par l'intermédiaire du bossage (40) et une tête de la vis (41) est positionnée à l'intérieur de la portion cylindrique (40b) du bossage (40) dans un état dans lequel le bouton (39) est fixé à la plaque externe (31) et
    dans lequel la tête de la vis (41) et le matériau d'isolation thermique à vide (35) sont espacés entre eux dans un état dans lequel le bouton (39) est fixé à la plaque externe (31) par l'élément de fixation (40, 41).
  2. Réfrigérateur (1) selon la revendication 1, dans lequel
    la poignée (39a) s'étend parallèlement à la portion de plaque plate (31a) de la plaque externe (31),
    le bouton (39) comprend des montants (39b) qui s'étendent à partir des deux extrémités de la poignée (39a) vers l'intérieur du réfrigérateur (1) et qui sont fixées à la plaque externe (31) et
    la poignée (39a) est une poignée qui est espacée de la plaque externe (31).
  3. Réfrigérateur (1) selon la revendication 1 ou 2, dans lequel le matériau d'isolation thermique à vide (35) est lié à la plaque externe (31).
  4. Réfrigérateur (1) selon l'une des revendications 1 à 3,
    dans lequel le matériau d'isolation thermique à vide (35) est formé avec une découpe d'une partie d'angle située près de l'élément de fixation (40, 41) afin d'éviter un contact avec l'élément de fixation (40, 41).
  5. Réfrigérateur (1) selon la revendication 3, dans lequel le matériau d'isolation thermique à vide (35) est lié à la plaque externe (31) par un adhésif.
EP13836161.3A 2012-09-06 2013-08-23 Réfrigérateur Not-in-force EP2894424B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012195794A JP6081108B2 (ja) 2012-09-06 2012-09-06 冷蔵庫
PCT/JP2013/004983 WO2014038150A1 (fr) 2012-09-06 2013-08-23 Réfrigérateur

Publications (3)

Publication Number Publication Date
EP2894424A1 EP2894424A1 (fr) 2015-07-15
EP2894424A4 EP2894424A4 (fr) 2016-05-25
EP2894424B1 true EP2894424B1 (fr) 2018-10-24

Family

ID=50236785

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13836161.3A Not-in-force EP2894424B1 (fr) 2012-09-06 2013-08-23 Réfrigérateur

Country Status (5)

Country Link
EP (1) EP2894424B1 (fr)
JP (1) JP6081108B2 (fr)
CN (1) CN104903666B (fr)
TW (1) TWI551839B (fr)
WO (1) WO2014038150A1 (fr)

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US9840042B2 (en) 2015-12-22 2017-12-12 Whirlpool Corporation Adhesively secured vacuum insulated panels for refrigerators
US10018406B2 (en) 2015-12-28 2018-07-10 Whirlpool Corporation Multi-layer gas barrier materials for vacuum insulated structure
US10610985B2 (en) 2015-12-28 2020-04-07 Whirlpool Corporation Multilayer barrier materials with PVD or plasma coating for vacuum insulated structure
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US10807298B2 (en) 2015-12-29 2020-10-20 Whirlpool Corporation Molded gas barrier parts for vacuum insulated structure
US11247369B2 (en) 2015-12-30 2022-02-15 Whirlpool Corporation Method of fabricating 3D vacuum insulated refrigerator structure having core material
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US11320193B2 (en) 2016-07-26 2022-05-03 Whirlpool Corporation Vacuum insulated structure trim breaker
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US10907888B2 (en) 2018-06-25 2021-02-02 Whirlpool Corporation Hybrid pigmented hot stitched color liner system
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JP2014052111A (ja) 2014-03-20
CN104903666B (zh) 2017-05-17
EP2894424A4 (fr) 2016-05-25
JP6081108B2 (ja) 2017-02-15
TWI551839B (zh) 2016-10-01
EP2894424A1 (fr) 2015-07-15
CN104903666A (zh) 2015-09-09
TW201411075A (zh) 2014-03-16

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