WO2023152996A1 - Insulated door and storage - Google Patents

Insulated door and storage Download PDF

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Publication number
WO2023152996A1
WO2023152996A1 PCT/JP2022/025071 JP2022025071W WO2023152996A1 WO 2023152996 A1 WO2023152996 A1 WO 2023152996A1 JP 2022025071 W JP2022025071 W JP 2022025071W WO 2023152996 A1 WO2023152996 A1 WO 2023152996A1
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WO
WIPO (PCT)
Prior art keywords
heat insulating
door
insulating material
molded
rear plate
Prior art date
Application number
PCT/JP2022/025071
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French (fr)
Japanese (ja)
Inventor
大 板倉
Original Assignee
日立グローバルライフソリューションズ株式会社
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Publication of WO2023152996A1 publication Critical patent/WO2023152996A1/en

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    • 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
    • F25D23/08—Parts formed wholly or mainly of plastics materials

Definitions

  • the present invention relates to an insulated door and storage.
  • Patent Document 1 describes a refrigerator door in which a vacuum insulation material is fitted into a recess formed in a molded insulation material.
  • Japanese Patent No. 6942170 (see FIG. 9)
  • the vacuum insulation material may deteriorate when exposed to moisture.
  • the present invention comprises a front plate, a rear plate, and a frame disposed therebetween, and a molded insulation disposed in a space surrounded by the front plate, the rear plate, and the frame,
  • a first molded heat insulating material arranged on the front plate side and a second molded heat insulating material arranged on the rear plate side and having a lower thermal conductivity than the first molded heat insulating material; and the second molded heat insulating material is a heat insulating material other than a vacuum heat insulating material.
  • FIG. 5 is a cross-sectional view taken along line VV of FIG. 4;
  • FIG. 5 is a sectional view taken along the line VI-VI of FIG. 4;
  • 6 is an enlarged view of part A in FIG. 5;
  • FIG. 7 is an enlarged view of a B portion in FIG. 6;
  • FIG. 9 is an enlarged view of a C portion in FIG. 8;
  • 5 is an enlarged perspective view of a portion D in FIG. 4;
  • FIG. 5 is a cross-sectional view taken along line XI-XI of FIG. 4;
  • FIG. 1 is an external perspective view of the storage of this embodiment.
  • the storage 1 includes a heat insulating box body 2 and a door 3 (heat insulating door).
  • the heat insulating box body 2 includes left and right side panels 4, 4, a rear panel 5, a top panel 6, and a bottom panel 7, and has a storage room 10 inside.
  • the storage 1 is, for example, a refrigerator having a refrigerating temperature range (eg, 1° C. to 6° C.).
  • the storage may be a freezer having a freezing temperature range (eg, about -20°C to -18°C), a storage without refrigeration and freezing functions, or the like.
  • a refrigeration cycle for cooling the storage chamber 10 is formed on the bottom side of the storage chamber 1 by a condenser, a compressor, a decompressor (capillary tube), a cooler, etc. (not shown). there is
  • the door 3 closes an opening (not shown) formed on the front surface of the storage room 10 .
  • the door 3 is rotatably fixed to the upper portion of the heat insulating box 2 via an upper hinge (not shown) and to the lower portion via a lower hinge (not shown).
  • the storage 1 shown in FIG. 1 is described as a right-opening door 3 with hinges on the right side, it is a left-opening door with hinges (upper and lower hinges) on the left side. There may be.
  • the left and right side panels 4, rear panel 5, top panel 6, and bottom panel 7 are provided with heat insulating materials (not shown) that are at least one of molded heat insulating materials and vacuum heat insulating materials.
  • heat insulating materials are at least one of molded heat insulating materials and vacuum heat insulating materials.
  • molded insulation does not refer to insulation that is manufactured by injecting an undiluted solution of foam insulation and foaming it on site, but refers to insulation that is molded into a predetermined shape at another location. can be understood as
  • a groove 3a is formed in the upper end surface of the door 3 in the lateral direction, which is the direction in which the door 3 extends.
  • the door 3 can be opened by hooking the user's finger on the groove 3a and pulling it forward.
  • the height of the storage 1 is, for example, 150 cm or less, preferably 100 cm or less, more preferably 75 cm or less.
  • FIG. 2 is an exploded perspective view of the heat insulating door of this embodiment when viewed from the front side.
  • FIG. 3 is an exploded perspective view of the heat insulation door of this embodiment when viewed from the back side.
  • the door 3 includes a door panel 31 (front plate), a door liner 32 (rear plate), a door frame 33 (frame), a molded heat insulating material 34, and a door packing 35. .
  • the door panel 31 is made of, for example, injection-molded ABS resin (acrylonitrile butadiene styrene copolymer) and has a square plate shape. Moreover, the front surface of the door panel 31 is formed to be a flat surface (see FIG. 2). The rear surface of the door panel 31 is formed with a plurality of claws 31a that engage with the door frame 33 and a plurality of bosses 31b that are screwed to the door frame 33 (see FIG. 3). The claws 31a are formed on the outer peripheral edge of the door panel 31 at intervals in the circumferential direction. The bosses 31b are formed at the four corners of the door panel 31, for example.
  • ABS resin acrylonitrile butadiene styrene copolymer
  • the door liner 32 is made of, for example, injection-molded PP (polypropylene) resin and is shaped like a square plate.
  • a plurality of claws 32 a that engage with the door frame 33 are formed on the rear surface of the door liner 32 .
  • the claws 32a are formed on the outer peripheral edge of the door liner 32 at intervals in the circumferential direction.
  • the door liner 32 is formed with an uneven portion 32b having a lattice shape.
  • the uneven portion 32b is formed on almost the entire surface except for the outer peripheral portion.
  • the door frame 33 is made of injection-molded ABS resin, for example, and is arranged between the door panel 31 and the door liner 32 .
  • the door frame 33 is a rectangular frame-shaped member that is arranged along the four sides (top, bottom, left, and right) of the door panel 31 and the door liner 32 .
  • molded heat insulating material 34 molded heat insulating material 34
  • door components door panel 31, door liner 32, door frame 33
  • the molded heat insulating material 34 comes into contact with air, and dew condensation also occurs through the gaps.
  • the vacuum heat insulating material may deteriorate when water or the like comes into contact with the vacuum heat insulating material.
  • the formed heat insulating material 34 is used instead of the vacuum heat insulating material.
  • the molded heat insulating material 34 is arranged in a space S (see FIG. 5) surrounded by the door panel 31, the door liner 32 and the door frame 33, and is composed of a first molded heat insulating material 34A and a second molded heat insulating material 34B.
  • first molded heat insulating material 34A nor the second molded heat insulating material 34B refers to a heat insulating material manufactured by injecting an undiluted solution of a foamed heat insulating material into the space S and foaming it. It refers to insulation molded into the shape of
  • the first molded heat insulating material 34A and the second molded heat insulating material 34B are heat insulating materials other than the vacuum heat insulating material.
  • the vacuum heat insulating material is formed by wrapping a core material such as glass wool or urethane in an outer wrapping material having gas barrier properties and reducing the pressure.
  • the second heat insulator 34B has a lower thermal conductivity than the first heat insulator 34A. In other words, the second heat insulator 34B has a higher thermal insulation than the first heat insulator 34A.
  • the first molded heat insulating material 34A which is a heat insulating material other than the vacuum heat insulating material, is made of, for example, a styrene-based resin foam, a rigid polyethylene resin foam, or the like. Further, the first molded heat insulating material 34A is formed by notching so as to escape the shape of the protrusions formed on the door frame 33. As shown in FIG.
  • the second molded heat insulating material 34B which is a heat insulating material other than the vacuum heat insulating material, is made of, for example, hard urethane-based resin foam.
  • the styrene-based resin foam as the first molded heat insulating material 34A is superior in moldability to the urethane-based heat insulating material applied as the second molded heat insulating material 34B, and can be molded along the shape of the door frame 33 and the like. Easy to manufacture.
  • the door packing 35 seals the gap between the heat insulating box body 2 (see FIG. 1) and the door 3 when the door 3 is closed, and is formed in the shape of a square frame. Further, the door packing 35 is attached to a groove 32c (see FIG. 5) formed in the door liner 32 in the shape of a square frame.
  • FIG. 4 is a rear view of the heat insulation door of this embodiment. 4 shows the door 3 after assembling the members shown in FIGS. 2 and 3. As shown in FIG. As shown in FIG. 4 , a door packing 35 having a rectangular frame shape is attached to the outer circumference of the door liner 32 . Further, in the door liner 32 , an uneven portion 32 b formed in a grid shape is formed on the inner peripheral side of the door packing 35 almost entirely on the inner peripheral side of the door packing 35 .
  • the concave-convex portion 32b is formed with a concave streak portion (groove) 32b1 extending linearly in the lateral direction (horizontal direction, left-right direction).
  • a plurality of (five in this embodiment) grooves 32b1 are formed at intervals in the vertical direction.
  • the uneven portion 32b is formed with a recessed streak portion (groove) 32b2 extending linearly in the vertical direction (vertical direction).
  • a plurality of (20 in this embodiment) grooves 32b2 are formed at intervals in the left-right direction. That is, a rectangular convex surface portion 32b3 defined by the grooved portions 32b1 and 32b2 is formed so as to protrude forward in the vertical direction with respect to the plane of FIG.
  • FIGS. 5 and 6 are sectional views taken along line VI-VI of FIG.
  • a recess 40 is formed in the first molded heat insulating material 34A so that the recess faces the side facing the inside of the refrigerator when the door 3 is closed.
  • the recess 40 has a bottom wall 40a parallel to the door panel 31 and side walls 40b rising from the outer peripheral edge of the bottom wall 40a toward the door liner 32 side.
  • the side wall 40b is formed with a tapered surface 40b1 that is inclined so as to expand from the bottom wall 40a toward the opening side (door liner 32 side).
  • the second heat insulator 34B is shaped like a square plate and is fitted into the recess 40 of the first heat insulator 34A. In this way, the second heat insulator 34B, which has a higher heat insulation performance than the first heat insulator 34A, is arranged inside (closer to the heat insulating box 2) than the first heat insulator 34A. . Thereby, the heat escaping from the edge of the door 3 can be reduced, and the heat insulation performance of the door 3 can be improved.
  • the thickness of the second molded heat insulating material 34B is formed so as to be substantially the same as the depth of the recess 40 . At this time, when the second heat insulator 34B is accommodated in the recess 40, the surface of the second heat insulator 34B facing the door liner 32 and the surface of the first heat insulator 34A facing the door liner 32 They are almost flush.
  • a groove 32c to which the door packing 35 is attached is formed in the outer peripheral edge of the door liner 32.
  • the groove 32c is located closer to the door panel 31 in the front-rear direction than the surface of the uneven portion 32b of the door liner 32. As shown in FIG.
  • the door liner 32 is formed with a bank portion 32d projecting toward the heat insulating box body 2 (see FIG. 1) between the uneven portion 32b and the groove 32c.
  • the bank portion 32d is formed in a rectangular frame shape so as to surround the uneven portion 32b.
  • the second molded heat insulating material 34B is positioned inside (on the inner peripheral side) of the embankment portion 32d. That is, only the first molded heat insulating material 34A is accommodated outside the bank portion 32d.
  • the thickness T1 of the second heat insulator 34B is formed thicker than the thickness T2 between the recess 40 of the first heat insulator 34A and the door panel 31.
  • FIG. 7 is an enlarged view of part A in FIG.
  • the door liner 32 is formed with a groove 32c as a door packing groove (attachment groove) to which the door packing 35 (see FIG. 4) is attached.
  • the groove 32c is formed in a concave shape so that the concave surface faces the rear (the side of the heat insulating box 2).
  • the door liner 32 has a thickness dimension of T10 outside the groove 32c, a thickness dimension of T20 inside the groove 32c (on the uneven portion 32b side), and a thickness dimension of the groove 32c of T30. and
  • the thickness of the door liner 32 is not uniform and is configured to satisfy T10>T20>T30.
  • T10 can be 2 mm
  • T20 can be 1.5 mm
  • T30 can be 1 mm.
  • the plate thickness T30 of the outer periphery of the door liner 32 thicker than the grooves 32c of the door liner 32 in this way, it is possible to ensure the strength when manufacturing the door liner 32 with a mold. Further, by setting the plate thickness of the door liner 32 on the surface (center side) facing the inside of the refrigerator to T20, it is possible to secure the internal volume and prevent deterioration of moldability. In addition, by making the groove 32c T30 (thinly formed), it is possible to facilitate die-cutting.
  • FIG. 8 is an enlarged view of the B portion in FIG.
  • aluminum sheets 51 and 52 waterproof sheets
  • the sheet 51 is laminated on the surface of the recess 40 facing the bottom wall 40a.
  • the sheet 52 is laminated on the surface facing the door liner 32 .
  • a waterproof sheet is not provided on the surface facing the side wall 40b of the concave portion 40 of the second heat insulator 34B, and the hard urethane foam of the second heat insulator 34B is exposed. However, this surface is less likely to be affected by the low-temperature air inside the refrigerator and is less susceptible to condensation, so the need for a waterproof sheet is low.
  • the waterproof sheets 51 and 52 are provided as an example. good. Resin sheets may be used instead of the metal sheets 51 and 52 .
  • the first molded heat insulating material 34A is formed with an insertion recess 34s that is notched so that the groove 32c (protruding portion) into which the door packing 35 is inserted is inserted.
  • a sealing material 36 is provided in the insertion recess 34s (on the side of the first molded heat insulating material 34A of the groove 32c), and the groove 32c of the door liner 32 is inserted after the sealing material 36 is inserted.
  • the sealing material 36 is, for example, a soft urethane-based resin, and is crushed by inserting the groove 32c into the insertion recess 34s. is ensured.
  • FIG. 9 is an enlarged view of the C portion in FIG.
  • a gap S1 is formed between the convex surface portion 32b3 and the second molded heat insulating material 34B.
  • 32 s of ventilation holes which connect the space
  • 32 s of this ventilation hole are located in the lower end part of the convex surface part 32b3, and are opened toward the up-down direction (vertical direction) downward.
  • the air holes 32s are formed at the lower ends of all the convex portions 32b3.
  • vent holes 32s By forming the vent holes 32s in this way, even if the condensed water W is generated in the gap S1, the condensed water W can be discharged from the vent holes 32s to the outside of the door. Further, by forming the vent hole 32s downward at the lower end, the vent hole 32s can be made inconspicuous to the user. In addition, although not shown, a ventilation hole may be formed in the upper end portion of the convex portion 32b3.
  • FIG. 10 is an enlarged perspective view of part D in FIG.
  • a ventilation hole 32t is formed at an end portion in the extending direction of the recessed streak portion 32b2.
  • FIG. 10 shows an example in which a vent hole is formed at the upper end of the recessed portion 32b2, the vent hole may be formed at the lower end portion of the extending direction of the recessed portion 32b2, or the vent hole may be formed at the extension of the recessed portion 32b1. Ventilation holes may be formed at the directional ends (left end, right end).
  • the embankment 32d is located in the vicinity of the recessed streaks 32b1 and 32b2, so the vent hole 32t can be made inconspicuous.
  • the heat insulating box body 2 may be provided with a ventilation hole.
  • the heat-insulating box body 2 an inner box forming a wall surface inside the chamber and an outer box forming a wall surface outside the chamber are used.
  • a molded heat insulating material is used as the heat insulating material provided inside them. Since a gap is formed between the vacuum heat insulating material and the molded heat insulating material facing the inner box, the inner box can be provided with ventilation holes from the viewpoint of dew condensation countermeasures.
  • vacuum heat insulating materials may be used if there is a prospect of suppressing deterioration due to dew condensation by applying some treatment to the vacuum heat insulating materials.
  • FIG. 11 is a cross-sectional view taken along line XI-XI of FIG. 4.
  • FIG. 11 claws 32 a formed on the outer periphery of the door liner 32 are fitted with the door frame 33 . Since a tool (not shown) is required to release the fitted state (engaged state) of the claws 32a, a gap S10 is formed for inserting a tool to release the fitted state. This gap S10 can be made to function as a drain hole to drain condensed water.
  • the door 3 of this embodiment includes the door panel 31, the door liner 32, the door frame 33 arranged therebetween, and the space S surrounded by the door panel 31, the door liner 32, and the door frame 33. and molded insulation 34 disposed thereon.
  • the formed heat insulating material 34 a first formed heat insulating material 34A arranged on the door panel 31 side and a second formed heat insulating material 34B arranged on the door liner 32 side and having a lower thermal conductivity than the first formed heat insulating material 34A.
  • the second molded heat insulating material 34B is a heat insulating material other than a vacuum heat insulating material.
  • the first heat insulator 34A has a recess 40 that opens toward the door liner 32, and the second heat insulator 34B is accommodated in the recess 40. According to this, heat insulating performance can be improved by arranging the second molded heat insulating material 34B on the inner side (door liner 32 side).
  • the door liner 32 is provided with a lattice-shaped concave-convex portion 32b. According to this, the door liner 32 can be reinforced, and warp of the door liner 32 can be suppressed.
  • the door liner 32 is formed with a vent hole 32s that communicates with the outside of the door. According to this, dew condensation on the surface of the door liner 32 can be prevented.
  • the door liner 32 includes a bank 32d formed in a rectangular frame shape and a lattice-shaped concave-convex portion 32b arranged in an area surrounded by the bank 32d. is formed in the vicinity of According to this, the vent hole 32t can be made inconspicuous.
  • the door liner 32 is provided with a lattice-shaped concave-convex portion 32b.
  • 32 s of ventilation holes are formed in the lower end of each convex-surface part 32b3 of the uneven
  • waterproof sheets 51 and 52 are laminated on the surface on the door panel 31 side and the surface on the door liner 32 side of the second molded heat insulating material 34B. According to this, it is possible to prevent the dew condensation water from penetrating into the second molded heat insulating material 34B.
  • the side wall 40b of the recess 40 is formed with a tapered surface 40b1 that is inclined so as to expand toward the door frame 33 side. This makes it easier to insert the second heat insulator 34B into the recess 40 of the first heat insulator 34A, which facilitates manufacturing.
  • the door liner 32 is formed with a groove 32c in which a door packing 35 for sealing the gap with the heat insulating box body 2 is attached.
  • An insertion recess 34s into which the groove 32c is inserted is formed in the first molded heat insulator 34A.
  • a sealing material 36 is provided between the insertion recess 34s and the groove 32c.
  • the storage 1 of this embodiment includes a door 3 and a heat insulating box 2 closed by the door 3, and the heat insulating box 2 is a refrigerating temperature zone storage room. According to this, the condensed water will not freeze, and it is possible to suppress the influence of the deterioration of the condensed water due to repetition of water and ice.
  • the storage 1 of the present embodiment includes a door 3 and a heat insulating box body 2 closed by the door 3.
  • the heat insulating box body 2 includes an inner box, an outer box, a heat insulating material disposed therebetween, and a gap formed between the inner box and the heat insulating material, and the inner box has a vent.
  • the present invention is not limited to the above-described embodiments, and can include various modifications.
  • the door panel 31 and the door frame 33 may be integrally formed by resin molding, or the door liner 32 and the door frame 33 may be integrally formed by resin molding. Thereby, assembly of the door 3 can be simplified.

Abstract

The present invention comprises: a door panel (31); a door liner (32); a door frame (33) disposed therebetween; and a molded insulation material (34) disposed in a space (S) that is surrounded by the door panel (31), the door liner (32), and the door frame (33). The present invention comprises, as the molded insulation material (34), a first molded insulation material (34A) disposed on the door panel (31) side, and a second molded insulation material (34B) disposed on the door liner (32) side and having a lower thermal conductivity than the first molded insulation material (34A). The second molded insulation material (34B) is an insulation material other than vacuum insulation material.

Description

断熱扉および貯蔵庫Insulated doors and storage
　本発明は、断熱扉および貯蔵庫に関する。 The present invention relates to an insulated door and storage.
　特許文献１には、成形断熱材に形成された凹部に真空断熱材を嵌め入れた冷蔵庫扉が記載されている。 Patent Document 1 describes a refrigerator door in which a vacuum insulation material is fitted into a recess formed in a molded insulation material.
特許６９４２１７０号公報（図９参照）Japanese Patent No. 6942170 (see FIG. 9)
　しかしながら、特許文献１に記載の冷蔵庫扉では、真空断熱材が水分にさらされた場合、真空断熱材が劣化するおそれがある。 However, in the refrigerator door described in Patent Document 1, the vacuum insulation material may deteriorate when exposed to moisture.
　本発明は、前板、後板、及びこれらの間に配されたフレームと、前記前板、前記後板、及び前記フレームによって囲まれた空間に配された成形断熱材と、を備え、前記成形断熱材として、前記前板側に配された第１の成形断熱材と、前記後板側に配されて前記第１の成形断熱材よりも低熱伝導率の第２の成形断熱材と、を備え、前記第２の成形断熱材は、真空断熱材以外の断熱材である。 The present invention comprises a front plate, a rear plate, and a frame disposed therebetween, and a molded insulation disposed in a space surrounded by the front plate, the rear plate, and the frame, As molded heat insulating materials, a first molded heat insulating material arranged on the front plate side and a second molded heat insulating material arranged on the rear plate side and having a lower thermal conductivity than the first molded heat insulating material; and the second molded heat insulating material is a heat insulating material other than a vacuum heat insulating material.
本実施形態の貯蔵庫を示す外観斜視図である。It is an external appearance perspective view which shows the storage of this embodiment. 本実施形態の断熱扉を表側から見たときの分解斜視図である。It is an exploded perspective view when the heat insulation door of this embodiment is seen from front side. 本実施形態の断熱扉を裏側から見たときの分解斜視図である。It is an exploded perspective view when the heat insulation door of this embodiment is seen from the back side. 本実施形態の断熱扉の背面図である。It is a rear view of the heat insulation door of this embodiment. 図４のＶ－Ｖ線断面図である。FIG. 5 is a cross-sectional view taken along line VV of FIG. 4; 図４のＶＩ－ＶＩ線断面図である。FIG. 5 is a sectional view taken along the line VI-VI of FIG. 4; 図５のＡ部拡大図である。6 is an enlarged view of part A in FIG. 5; FIG. 図６のＢ部拡大図である。FIG. 7 is an enlarged view of a B portion in FIG. 6; 図８のＣ部拡大図である。FIG. 9 is an enlarged view of a C portion in FIG. 8; 図４のＤ部拡大斜視図である。5 is an enlarged perspective view of a portion D in FIG. 4; FIG. 図４のＸＩ－ＸＩ線断面図である。5 is a cross-sectional view taken along line XI-XI of FIG. 4; FIG.
　以下、本実施形態について図面を参照しながら説明する。
　図１は、本実施形態の貯蔵庫の外観斜視図である。貯蔵庫１は、断熱箱体２と、扉３（断熱扉）と、を備える。断熱箱体２は、左右の側面パネル４，４と、背面パネル５と、天面パネル６と、底面パネル７とを含み、内部に貯蔵室１０を有する。なお、貯蔵庫１は、例えば、冷蔵温度帯（例えば、１℃～６℃）を有する冷蔵庫である。なお、貯蔵庫は、冷凍温度帯（例えば、約－２０℃～－１８℃）を有する冷凍庫、冷蔵及び冷凍機能を有しない貯蔵庫等でもよい。また、図示していないが、貯蔵庫１の底部側には、貯蔵室１０を冷却するための冷凍サイクルが、図示しない、コンデンサ、圧縮機、減圧器（キャピラリチューブ）、冷却器などによって構成されている。 Hereinafter, this embodiment will be described with reference to the drawings.
FIG. 1 is an external perspective view of the storage of this embodiment. The storage 1 includes a heat insulating box body 2 and a door 3 (heat insulating door). The heat insulating box body 2 includes left and right side panels 4, 4, a rear panel 5, a top panel 6, and a bottom panel 7, and has a storage room 10 inside. Note that the storage 1 is, for example, a refrigerator having a refrigerating temperature range (eg, 1° C. to 6° C.). The storage may be a freezer having a freezing temperature range (eg, about -20°C to -18°C), a storage without refrigeration and freezing functions, or the like. Also, although not shown, a refrigeration cycle for cooling the storage chamber 10 is formed on the bottom side of the storage chamber 1 by a condenser, a compressor, a decompressor (capillary tube), a cooler, etc. (not shown). there is
　扉３は、貯蔵室１０の前面に形成された開口（不図示）を閉塞するものである。扉３は、断熱箱体２の上部に対して上ヒンジ（不図示）、下部に対して下ヒンジ（不図示）を介して回動可能に固定されている。なお、図１に示す貯蔵庫１は、右側にヒンジが設けられた右開きの扉３を示して説明しているが、左側にヒンジ（上ヒンジおよび下ヒンジ）が設けられた左開きの扉であってもよい。 The door 3 closes an opening (not shown) formed on the front surface of the storage room 10 . The door 3 is rotatably fixed to the upper portion of the heat insulating box 2 via an upper hinge (not shown) and to the lower portion via a lower hinge (not shown). Although the storage 1 shown in FIG. 1 is described as a right-opening door 3 with hinges on the right side, it is a left-opening door with hinges (upper and lower hinges) on the left side. There may be.
　左右の側面パネル４、背面パネル５、天面パネル６および底面パネル７には、成形断熱材又は真空断熱材の内の少なくとも一方である断熱材（不図示）が配置される。ここで、成形断熱材とは、発泡断熱材の原液を注入して、これを現場発泡させて製造する断熱材を指すものではなく、別の場所で所定の形状に成形された断熱材を指すと解することができる。 The left and right side panels 4, rear panel 5, top panel 6, and bottom panel 7 are provided with heat insulating materials (not shown) that are at least one of molded heat insulating materials and vacuum heat insulating materials. Here, molded insulation does not refer to insulation that is manufactured by injecting an undiluted solution of foam insulation and foaming it on site, but refers to insulation that is molded into a predetermined shape at another location. can be understood as
　扉３の上端面には、扉３の延在方向である左右方向に溝３ａが形成される。溝３ａに使用者の指を引っ掛け、手前側に引っ張ることで、扉３を開けることができる。貯蔵庫１の高さは、例えば１５０ｃｍ以下、好ましくは１００ｃｍ以下、より好ましくは７５ｃｍ以下である。 A groove 3a is formed in the upper end surface of the door 3 in the lateral direction, which is the direction in which the door 3 extends. The door 3 can be opened by hooking the user's finger on the groove 3a and pulling it forward. The height of the storage 1 is, for example, 150 cm or less, preferably 100 cm or less, more preferably 75 cm or less.
　図２は、本実施形態の断熱扉を表側から見たときの分解斜視図である。図３は、本実施形態の断熱扉を裏側から見たときの分解斜視図である。
　図２および図３に示すように、扉３は、ドアパネル３１（前板）、ドアライナ３２（後板）、ドアフレーム３３（フレーム）、成形断熱材３４、ドアパッキン３５を備えて構成されている。 FIG. 2 is an exploded perspective view of the heat insulating door of this embodiment when viewed from the front side. FIG. 3 is an exploded perspective view of the heat insulation door of this embodiment when viewed from the back side.
As shown in FIGS. 2 and 3, the door 3 includes a door panel 31 (front plate), a door liner 32 (rear plate), a door frame 33 (frame), a molded heat insulating material 34, and a door packing 35. .
　ドアパネル３１は、例えば、射出成型されたＡＢＳ樹脂（acrylonitrile butadiene styrene copolymer）製であり、四角板状に形成されている。また、ドアパネル３１の正面は、平坦な面になるように形成されている（図２参照）。ドアパネル３１の裏面には、ドアフレーム３３と嵌合する複数の爪３１ａと、ドアフレーム３３とねじ固定するための複数のボス３１ｂとが形成されている（図３参照）。爪３１ａは、ドアパネル３１の外周縁部に周方向に間隔を空けて形成されている。ボス３１ｂは、例えばドアパネル３１の四隅などに形成されている。 The door panel 31 is made of, for example, injection-molded ABS resin (acrylonitrile butadiene styrene copolymer) and has a square plate shape. Moreover, the front surface of the door panel 31 is formed to be a flat surface (see FIG. 2). The rear surface of the door panel 31 is formed with a plurality of claws 31a that engage with the door frame 33 and a plurality of bosses 31b that are screwed to the door frame 33 (see FIG. 3). The claws 31a are formed on the outer peripheral edge of the door panel 31 at intervals in the circumferential direction. The bosses 31b are formed at the four corners of the door panel 31, for example.
　ドアライナ３２は、例えば、射出成型されたＰＰ（polypropylene）樹脂製であり、四角板状に形成されている。また、ドアライナ３２の裏面には、ドアフレーム３３と嵌合する複数の爪３２ａが形成されている。爪３２ａは、ドアライナ３２の外周縁部に周方向に間隔を空けて形成されている。また、ドアライナ３２には、格子状に形成された凹凸部３２ｂが形成されている。この凹凸部３２ｂは、外周縁部を除くほぼ全面に形成されている。このように凹凸部３２ｂを形成することで、ドアライナ３２を一枚の板で製造したときに補強することができ、板の反りを抑えることができる。 The door liner 32 is made of, for example, injection-molded PP (polypropylene) resin and is shaped like a square plate. A plurality of claws 32 a that engage with the door frame 33 are formed on the rear surface of the door liner 32 . The claws 32a are formed on the outer peripheral edge of the door liner 32 at intervals in the circumferential direction. Further, the door liner 32 is formed with an uneven portion 32b having a lattice shape. The uneven portion 32b is formed on almost the entire surface except for the outer peripheral portion. By forming the concave-convex portion 32b in this manner, the door liner 32 can be reinforced when manufactured from a single plate, and warping of the plate can be suppressed.
　ドアフレーム３３は、例えば、射出成型されたＡＢＳ樹脂製であり、ドアパネル３１とドアライナ３２との間に配置される。また、ドアフレーム３３は、ドアパネル３１とドアライナ３２の４辺（上下左右）の外周縁部に沿って配置される四角枠状の部材である。 The door frame 33 is made of injection-molded ABS resin, for example, and is arranged between the door panel 31 and the door liner 32 . The door frame 33 is a rectangular frame-shaped member that is arranged along the four sides (top, bottom, left, and right) of the door panel 31 and the door liner 32 .
　ところで、ウレタン充填・発泡させた断熱材ではなく、予め成形されたウレタン（成形断熱材３４）と扉の構成部材（ドアパネル３１、ドアライナ３２、ドアフレーム３３）との間には隙間が生じるため、成形断熱材３４は空気に触れることになり、隙間を介して結露も発生する。このため、断熱材として真空断熱材を用いると、真空断熱材に水などが触れた場合、真空断熱材が劣化するおそれがある。また、減圧系の真空断熱材の場合、劣化して空気がリークすると、断熱性能の低下が激しくなる。そこで、扉３に収容する断熱材として、真空断熱ではなく、成形断熱材３４とした。 By the way, gaps are generated between pre-molded urethane (molded heat insulating material 34) instead of urethane-filled and foamed heat insulating material and door components (door panel 31, door liner 32, door frame 33). The molded heat insulating material 34 comes into contact with air, and dew condensation also occurs through the gaps. For this reason, when a vacuum heat insulating material is used as a heat insulating material, the vacuum heat insulating material may deteriorate when water or the like comes into contact with the vacuum heat insulating material. Further, in the case of a vacuum heat insulating material for a decompression system, if it deteriorates and air leaks, the heat insulating performance will deteriorate sharply. Therefore, as the heat insulating material to be accommodated in the door 3, the formed heat insulating material 34 is used instead of the vacuum heat insulating material.
　成形断熱材３４は、ドアパネル３１、ドアライナ３２およびドアフレーム３３によって囲まれる空間Ｓ（図５参照）に配置され、第１の成形断熱材３４Ａと、第２の成形断熱材３４Ｂとによって構成されている。なお、第１の成形断熱材３４Ａと第２の成形断熱材３４Ｂは、いずれも空間Ｓに発泡断熱材の原液を注入して、これを発泡させて製造する断熱材を指すものではなく、所定の形状に成形された断熱材を指している。また、第１の成形断熱材３４Ａと第２の成形断熱材３４Ｂは、真空断熱材以外の断熱材である。なお、真空断熱材とは、例えば、グラスウールやウレタン等の芯材を、ガスバリア性を有する外包材で包んで減圧して構成されるものである。 The molded heat insulating material 34 is arranged in a space S (see FIG. 5) surrounded by the door panel 31, the door liner 32 and the door frame 33, and is composed of a first molded heat insulating material 34A and a second molded heat insulating material 34B. there is It should be noted that neither the first molded heat insulating material 34A nor the second molded heat insulating material 34B refers to a heat insulating material manufactured by injecting an undiluted solution of a foamed heat insulating material into the space S and foaming it. It refers to insulation molded into the shape of Also, the first molded heat insulating material 34A and the second molded heat insulating material 34B are heat insulating materials other than the vacuum heat insulating material. The vacuum heat insulating material is formed by wrapping a core material such as glass wool or urethane in an outer wrapping material having gas barrier properties and reducing the pressure.
　また、第２の成形断熱材３４Ｂは、第１の成形断熱材３４Ａよりも低熱伝導率のものである。換言すると、第２の成形断熱材３４Ｂは、第１の成形断熱材３４Ａよりも断熱性が高いものである。なお、真空断熱材以外の断熱材としての第１の成形断熱材３４Ａは、例えばスチレン系樹脂発泡体、硬質ポリエチレン樹脂発泡体などによって構成されている。また、第１の成形断熱材３４Ａは、ドアフレーム３３に形成された突起物などの形状を逃げるように切り欠いて形成されている。また、真空断熱材以外の断熱材としての第２の成形断熱材３４Ｂは、例えば硬質ウレタン系樹脂発泡体などによって構成されている。また、第１の成形断熱材３４Ａとしてのスチレン系樹脂発泡体は、第２の成形断熱材３４Ｂとして適用されるウレタン系の断熱材よりも成形性に優れ、ドアフレーム３３などの形状に沿って製造することが容易である。 Also, the second heat insulator 34B has a lower thermal conductivity than the first heat insulator 34A. In other words, the second heat insulator 34B has a higher thermal insulation than the first heat insulator 34A. The first molded heat insulating material 34A, which is a heat insulating material other than the vacuum heat insulating material, is made of, for example, a styrene-based resin foam, a rigid polyethylene resin foam, or the like. Further, the first molded heat insulating material 34A is formed by notching so as to escape the shape of the protrusions formed on the door frame 33. As shown in FIG. Further, the second molded heat insulating material 34B, which is a heat insulating material other than the vacuum heat insulating material, is made of, for example, hard urethane-based resin foam. In addition, the styrene-based resin foam as the first molded heat insulating material 34A is superior in moldability to the urethane-based heat insulating material applied as the second molded heat insulating material 34B, and can be molded along the shape of the door frame 33 and the like. Easy to manufacture.
　ドアパッキン３５は、扉３を閉じたときに断熱箱体２（図１参照）と扉３との隙間を密閉するものであり、四角枠状に形成されている。また、ドアパッキン３５は、ドアライナ３２に四角枠状に形成された溝３２ｃ（図５参照）に取り付けられる。 The door packing 35 seals the gap between the heat insulating box body 2 (see FIG. 1) and the door 3 when the door 3 is closed, and is formed in the shape of a square frame. Further, the door packing 35 is attached to a groove 32c (see FIG. 5) formed in the door liner 32 in the shape of a square frame.
　図４は、本実施形態の断熱扉の背面図である。なお、図４は、図２および図３に示す各部材を組み立てた後の扉３を示している。
　図４に示すように、ドアライナ３２の外周には、四角枠状に形成されたドアパッキン３５が取り付けられる。また、ドアライナ３２には、ドアパッキン３５の内周側に、格子状に形成された凹凸部３２ｂが、ドアパッキン３５の内周側のほぼ全面に形成されている。 FIG. 4 is a rear view of the heat insulation door of this embodiment. 4 shows the door 3 after assembling the members shown in FIGS. 2 and 3. As shown in FIG.
As shown in FIG. 4 , a door packing 35 having a rectangular frame shape is attached to the outer circumference of the door liner 32 . Further, in the door liner 32 , an uneven portion 32 b formed in a grid shape is formed on the inner peripheral side of the door packing 35 almost entirely on the inner peripheral side of the door packing 35 .
　凹凸部３２ｂは、横方向（水平方向、左右方向）に直線状に延びる凹条部（溝）３２ｂ１が形成されている。この凹条部３２ｂ１は、上下方向に間隔を置いて複数（本実施形態では５本）形成されている。また、凹凸部３２ｂは、縦方向（上下方向）に直線状に延びる凹条部（溝）３２ｂ２が形成されている。この凹条部３２ｂ２は、左右方向に間隔を置いて複数（本実施形態では２０本）形成されている。すなわち、凹条部３２ｂ１，３２ｂ２によって区画された四角形状の凸面部３２ｂ３が図４の紙面に対して垂直方向手前側に突出するように形成されている。 The concave-convex portion 32b is formed with a concave streak portion (groove) 32b1 extending linearly in the lateral direction (horizontal direction, left-right direction). A plurality of (five in this embodiment) grooves 32b1 are formed at intervals in the vertical direction. Further, the uneven portion 32b is formed with a recessed streak portion (groove) 32b2 extending linearly in the vertical direction (vertical direction). A plurality of (20 in this embodiment) grooves 32b2 are formed at intervals in the left-right direction. That is, a rectangular convex surface portion 32b3 defined by the grooved portions 32b1 and 32b2 is formed so as to protrude forward in the vertical direction with respect to the plane of FIG.
　図５は、図４のＶ－Ｖ線断面図、図６は、図４のＶＩ－ＶＩ線断面図である。
　図５および図６に示すように、第１の成形断熱材３４Ａには、扉３を閉じたときの庫内側に対向する側に凹面が向くように凹部４０が形成されている。この凹部４０は、ドアパネル３１と平行な底壁４０ａと、この底壁４０ａの外周縁部からドアライナ３２側に向けて起立する側壁４０ｂと、を有している。側壁４０ｂは、底壁４０ａから開口側（ドアライナ３２側）に向けて拡大するように傾斜するテーパ面４０ｂ１が形成されている。このように側壁４０ｂにテーパ面４０ｂ１が形成されていることで、第２の成形断熱材３４Ｂを第１の成形断熱材３４Ａの凹部４０に挿入し易くなる。なお、本実施例では凹部４０と第２の成形断熱材３４Ｂとの隙間にシール材を設けていないが隙間にシール材を設けて成形断熱材３４を構成してもよい。 5 is a sectional view taken along line VV of FIG. 4, and FIG. 6 is a sectional view taken along line VI-VI of FIG.
As shown in FIGS. 5 and 6, a recess 40 is formed in the first molded heat insulating material 34A so that the recess faces the side facing the inside of the refrigerator when the door 3 is closed. The recess 40 has a bottom wall 40a parallel to the door panel 31 and side walls 40b rising from the outer peripheral edge of the bottom wall 40a toward the door liner 32 side. The side wall 40b is formed with a tapered surface 40b1 that is inclined so as to expand from the bottom wall 40a toward the opening side (door liner 32 side). By forming the tapered surface 40b1 on the side wall 40b in this way, it becomes easier to insert the second heat insulator 34B into the recess 40 of the first heat insulator 34A. In this embodiment, no sealing material is provided in the gap between the concave portion 40 and the second heat insulator 34B.
　第２の成形断熱材３４Ｂは、四角板状に形成され、第１の成形断熱材３４Ａの凹部４０に嵌め込まれている。このように、第１の成形断熱材３４Ａよりも断熱性能の高い第２の成形断熱材３４Ｂを、第１の成形断熱材３４Ａよりも内側（断熱箱体２に近い側）に配置している。これにより、扉３の端から逃げる熱を少なくすることができ、扉３の断熱性能を高くできる。 The second heat insulator 34B is shaped like a square plate and is fitted into the recess 40 of the first heat insulator 34A. In this way, the second heat insulator 34B, which has a higher heat insulation performance than the first heat insulator 34A, is arranged inside (closer to the heat insulating box 2) than the first heat insulator 34A. . Thereby, the heat escaping from the edge of the door 3 can be reduced, and the heat insulation performance of the door 3 can be improved.
　また、第２の成形断熱材３４Ｂの厚みは、凹部４０の深さとほぼ同じになるように形成されている。このとき、第２の成形断熱材３４Ｂを凹部４０に収容したときに、第２の成形断熱材３４Ｂのドアライナ３２側の面と、第１の成形断熱材３４Ａのドアライナ３２側の面とが、ほぼ面一になっている。 Also, the thickness of the second molded heat insulating material 34B is formed so as to be substantially the same as the depth of the recess 40 . At this time, when the second heat insulator 34B is accommodated in the recess 40, the surface of the second heat insulator 34B facing the door liner 32 and the surface of the first heat insulator 34A facing the door liner 32 They are almost flush.
　また、ドアライナ３２の外周縁部には、ドアパッキン３５が取り付けられる溝３２ｃが形成されている。この溝３２ｃは、ドアライナ３２の凹凸部３２ｂの面よりも前後方向のドアパネル３１側に位置している。 A groove 32c to which the door packing 35 is attached is formed in the outer peripheral edge of the door liner 32. The groove 32c is located closer to the door panel 31 in the front-rear direction than the surface of the uneven portion 32b of the door liner 32. As shown in FIG.
　また、ドアライナ３２には、凹凸部３２ｂと溝３２ｃとの間には、断熱箱体２（図１参照）に向けて突出する土手部３２ｄが形成されている。この土手部３２ｄは、凹凸部３２ｂの周囲を取り囲むように四角枠状に形成されている。また、第２の成形断熱材３４Ｂは、土手部３２ｄよりも内側（内周側）に位置している。つまり、土手部３２ｄから外側においては、第１の成形断熱材３４Ａのみが収容されている。 Further, the door liner 32 is formed with a bank portion 32d projecting toward the heat insulating box body 2 (see FIG. 1) between the uneven portion 32b and the groove 32c. The bank portion 32d is formed in a rectangular frame shape so as to surround the uneven portion 32b. In addition, the second molded heat insulating material 34B is positioned inside (on the inner peripheral side) of the embankment portion 32d. That is, only the first molded heat insulating material 34A is accommodated outside the bank portion 32d.
　また、第２の成形断熱材３４Ｂの厚み寸法Ｔ１は、第１の成形断熱材３４Ａの凹部４０とドアパネル３１との間の厚み寸法Ｔ２よりも厚く形成されている。このように厚み寸法Ｔ１を厚み寸法Ｔ２よりも厚く形成することで、扉３全体の厚さを抑えつつドアパネル３１の正面から逃げる熱を抑えることができ、扉３の断熱性能を高くできる。 In addition, the thickness T1 of the second heat insulator 34B is formed thicker than the thickness T2 between the recess 40 of the first heat insulator 34A and the door panel 31. By forming the thickness dimension T1 thicker than the thickness dimension T2 in this way, the thickness of the door 3 as a whole can be suppressed while the heat escaping from the front of the door panel 31 can be suppressed, and the heat insulating performance of the door 3 can be enhanced.
　図７は、図５のＡ部拡大図である。
　図７に示すように、ドアライナ３２には、ドアパッキン３５（図４参照）が取り付けられるドアパッキン溝（取付溝）としての溝３２ｃが形成されている。溝３２ｃは、凹面が後方（断熱箱体２側）を向くように凹状に形成されている。 FIG. 7 is an enlarged view of part A in FIG.
As shown in FIG. 7, the door liner 32 is formed with a groove 32c as a door packing groove (attachment groove) to which the door packing 35 (see FIG. 4) is attached. The groove 32c is formed in a concave shape so that the concave surface faces the rear (the side of the heat insulating box 2).
　また、ドアライナ３２は、溝３２ｃよりも外側の板厚の厚み寸法をＴ１０、溝３２ｃよりも内側（凹凸部３２ｂ側）の板厚の厚み寸法をＴ２０、溝３２ｃの板厚の厚み寸法をＴ３０とする。この場合、ドアライナ３２は、板厚が一様ではなく、Ｔ１０＞Ｔ２０＞Ｔ３０となるように構成されている。例えば、Ｔ１０は２ｍｍ、Ｔ２０は１．５ｍｍ、Ｔ３０は１ｍｍとすることができる。 Further, the door liner 32 has a thickness dimension of T10 outside the groove 32c, a thickness dimension of T20 inside the groove 32c (on the uneven portion 32b side), and a thickness dimension of the groove 32c of T30. and In this case, the thickness of the door liner 32 is not uniform and is configured to satisfy T10>T20>T30. For example, T10 can be 2 mm, T20 can be 1.5 mm, and T30 can be 1 mm.
　このように、ドアライナ３２の溝３２ｃよりも外周の板厚を厚くＴ３０にすることで、ドアライナ３２を金型によって製造する際の強度を確保することができる。また、庫内と対向する面（中央側）のドアライナ３２の板厚をＴ２０にすることで内容積を確保することができ、成形性が損なわれるのを防止できる。また、溝３２ｃをＴ３０にする（薄く形成する）ことで、型抜きをし易くできる。 By making the plate thickness T30 of the outer periphery of the door liner 32 thicker than the grooves 32c of the door liner 32 in this way, it is possible to ensure the strength when manufacturing the door liner 32 with a mold. Further, by setting the plate thickness of the door liner 32 on the surface (center side) facing the inside of the refrigerator to T20, it is possible to secure the internal volume and prevent deterioration of moldability. In addition, by making the groove 32c T30 (thinly formed), it is possible to facilitate die-cutting.
　図８は、図６のＢ部拡大図である。
　図８に示すように、第２の成形断熱材３４Ｂの前後の面には、アルミニウム製のシート５１，５２（防水シート）が設けられている。シート５１は、凹部４０の底壁４０ａに対向する面に積層されている。シート５２は、ドアライナ３２に対向する面に積層されている。このように防水性のあるシート５１，５２を第２の成形断熱材３４Ｂに設けることで、仮に結露が発生したとしても、硬質ウレタン系発泡体などからなる第２の成形断熱材３４Ｂの側に結露水が浸み込むのが抑えられ、第２の成形断熱材３４Ｂが劣化するのを抑えることができる。 FIG. 8 is an enlarged view of the B portion in FIG.
As shown in FIG. 8, aluminum sheets 51 and 52 (waterproof sheets) are provided on the front and rear surfaces of the second molded heat insulating material 34B. The sheet 51 is laminated on the surface of the recess 40 facing the bottom wall 40a. The sheet 52 is laminated on the surface facing the door liner 32 . By providing the waterproof sheets 51 and 52 on the second heat insulator 34B in this way, even if dew condensation occurs, the second heat insulator 34B made of hard urethane foam or the like can Infiltration of condensed water is suppressed, and deterioration of the second molded heat insulating material 34B can be suppressed.
　なお、第２の成形断熱材３４Ｂの凹部４０の側壁４０ｂに対向する面には、防水シートが設けられておらず、第２の成形断熱材３４Ｂの硬質ウレタン系発泡体が露出している。しかし、この面は、庫内の低温空気による影響が達しにくく、結露が発生しにくいところなので、防水シートの必要性が低い。また、本実施形態では、防水性のシート５１，５２を設けた場合を例に挙げて説明したが、シート５１，５２を設けずに、硬質ウレタン系の発泡体のみからなるものであってもよい。また、金属製のシート５１，５２に替えて、樹脂製のシートであってもよい。 A waterproof sheet is not provided on the surface facing the side wall 40b of the concave portion 40 of the second heat insulator 34B, and the hard urethane foam of the second heat insulator 34B is exposed. However, this surface is less likely to be affected by the low-temperature air inside the refrigerator and is less susceptible to condensation, so the need for a waterproof sheet is low. In addition, in the present embodiment, the waterproof sheets 51 and 52 are provided as an example. good. Resin sheets may be used instead of the metal sheets 51 and 52 .
　また、第１の成形断熱材３４Ａには、ドアパッキン３５が挿入される溝３２ｃ（凸形状部）が挿入されるように切り欠かれた挿入凹部３４ｓが形成されている。この挿入凹部３４ｓには（溝３２ｃの第１の成形断熱材３４Ａ側）、シール材３６が設けられ、シール材３６が挿入された後にドアライナ３２の溝３２ｃが挿入される。このシール材３６は、例えば軟質ウレタン系樹脂であり、溝３２ｃを挿入凹部３４ｓに挿入することでシール材３６が潰され、ドアパッキン３５の位置において溝３２ｃと挿入凹部３４ｓとの間におけるシール性が確保される。これにより、ドアパッキン３５が取り付けられる溝３２ｃよりも外側に形成された隙間から湿度の高い空気が侵入したとしても、溝３２ｃの位置で多湿の空気が中央側（第２の成形断熱材３４Ｂ側）に流れ込むのを抑制でき、第２の成形断熱材３４Ｂにおいて結露が発生するのを抑えることができる。 Further, the first molded heat insulating material 34A is formed with an insertion recess 34s that is notched so that the groove 32c (protruding portion) into which the door packing 35 is inserted is inserted. A sealing material 36 is provided in the insertion recess 34s (on the side of the first molded heat insulating material 34A of the groove 32c), and the groove 32c of the door liner 32 is inserted after the sealing material 36 is inserted. The sealing material 36 is, for example, a soft urethane-based resin, and is crushed by inserting the groove 32c into the insertion recess 34s. is ensured. As a result, even if high-humidity air enters through a gap formed outside the groove 32c to which the door packing 35 is attached, the high-humidity air is prevented from reaching the center side (second molded heat insulating material 34B side) at the position of the groove 32c. ), and the occurrence of dew condensation on the second molded heat insulating material 34B can be suppressed.
　図９は、図８のＣ部拡大図である。
　図９に示すように、ドアライナ３２には、凹凸部３２ｂが形成されているため、凸面部３２ｂ３と第２の成形断熱材３４Ｂとの間には、隙間Ｓ１が形成される。凹凸部３２ｂの凹条部３２ｂ１には、隙間Ｓ１と扉３の外部（扉外部）とを連通する通気孔３２ｓが形成されている。この通気孔３２ｓは、凸面部３２ｂ３の下端部に位置して、上下方向（鉛直方向）下方に向けて開口している。また、通気孔３２ｓは、すべての凸面部３２ｂ３の下端部に形成されている。このように、通気孔３２ｓを形成することで、隙間Ｓ１に結露水Ｗが発生したとしても結露水Ｗを通気孔３２ｓから扉外部に排出することができる。また、通気孔３２ｓを下端部において下向きに形成することで、ユーザから通気孔３２ｓを目立たなくすることができる。なお、図示していないが、凸面部３２ｂ３の上端部に通気孔を形成してもよい。 FIG. 9 is an enlarged view of the C portion in FIG.
As shown in FIG. 9, since the door liner 32 is formed with the uneven portion 32b, a gap S1 is formed between the convex surface portion 32b3 and the second molded heat insulating material 34B. 32 s of ventilation holes which connect the space|gap S1 and the exterior of the door 3 (door exterior) are formed in the recessed line part 32b1 of the uneven|corrugated|grooved part 32b. 32 s of this ventilation hole are located in the lower end part of the convex surface part 32b3, and are opened toward the up-down direction (vertical direction) downward. Also, the air holes 32s are formed at the lower ends of all the convex portions 32b3. By forming the vent holes 32s in this way, even if the condensed water W is generated in the gap S1, the condensed water W can be discharged from the vent holes 32s to the outside of the door. Further, by forming the vent hole 32s downward at the lower end, the vent hole 32s can be made inconspicuous to the user. In addition, although not shown, a ventilation hole may be formed in the upper end portion of the convex portion 32b3.
　図１０は、図４のＤ部拡大斜視図である。
　図１０に示すように、凹条部３２ｂ２の延在方向端部に通気孔３２ｔが形成されている。なお、図１０では、凹状部３２ｂ２の上端に形成されている例を示したが、凹状部３２ｂ２の延在方向の下端部に通気孔を形成してもよく、また、凹状部３２ｂ１の延在方向端部（左端部、右端部）に通気孔を形成してもよい。この場合、凹条部３２ｂ１，３２ｂ２の近傍には土手３２ｄが位置することとなるため、通気孔３２ｔを目立ちにくくすることができる。 FIG. 10 is an enlarged perspective view of part D in FIG.
As shown in FIG. 10, a ventilation hole 32t is formed at an end portion in the extending direction of the recessed streak portion 32b2. Although FIG. 10 shows an example in which a vent hole is formed at the upper end of the recessed portion 32b2, the vent hole may be formed at the lower end portion of the extending direction of the recessed portion 32b2, or the vent hole may be formed at the extension of the recessed portion 32b1. Ventilation holes may be formed at the directional ends (left end, right end). In this case, the embankment 32d is located in the vicinity of the recessed streaks 32b1 and 32b2, so the vent hole 32t can be made inconspicuous.
　なお、扉３と同様、断熱箱体２に通気孔を設けてもよい。具体的には、断熱箱体２として、庫内側の壁面を形成する内箱と庫外側の壁面を形成する外箱を使用する。これらの内部に設ける断熱材として、成形断熱材を使用する。内箱に対向する真空断熱材や成形断熱材は、内箱との間に隙間を形成するため、結露対策の観点から、内箱に通気孔を設けることができる。また、扉３についても断熱箱体２についても、真空断熱材に何らかの手当てを施して結露による劣化を抑制する目途が立てば、真空断熱材を使用してもよい。 As with the door 3, the heat insulating box body 2 may be provided with a ventilation hole. Specifically, as the heat-insulating box body 2, an inner box forming a wall surface inside the chamber and an outer box forming a wall surface outside the chamber are used. A molded heat insulating material is used as the heat insulating material provided inside them. Since a gap is formed between the vacuum heat insulating material and the molded heat insulating material facing the inner box, the inner box can be provided with ventilation holes from the viewpoint of dew condensation countermeasures. Also, for both the door 3 and the heat insulating box 2, vacuum heat insulating materials may be used if there is a prospect of suppressing deterioration due to dew condensation by applying some treatment to the vacuum heat insulating materials.
　図１１は、図４のＸＩ－ＸＩ線断面図である。
　図１１に示すように、ドアライナ３２の外周に形成された爪３２ａは、ドアフレーム３３と嵌合している。この爪３２ａの嵌合状態を（係合状態）解除するためには工具（不図示）が必要であるため、工具を挿入して嵌合状態を解除するための隙間Ｓ１０が形成されている。この隙間Ｓ１０を水抜き孔として機能させて、結露水を排出することが可能になる。 11 is a cross-sectional view taken along line XI-XI of FIG. 4. FIG.
As shown in FIG. 11 , claws 32 a formed on the outer periphery of the door liner 32 are fitted with the door frame 33 . Since a tool (not shown) is required to release the fitted state (engaged state) of the claws 32a, a gap S10 is formed for inserting a tool to release the fitted state. This gap S10 can be made to function as a drain hole to drain condensed water.
　以上説明したように、本実施形態の扉３は、ドアパネル３１、ドアライナ３２、及びこれらの間に配されたドアフレーム３３と、ドアパネル３１、ドアライナ３２、及びドアフレーム３３によって囲まれた空間Ｓに配された成形断熱材３４と、を備える。成形断熱材３４として、ドアパネル３１側に配された第１の成形断熱材３４Ａと、ドアライナ３２側に配されて第１の成形断熱材３４Ａよりも低熱伝導率の第２の成形断熱材３４Ｂと、を備え、第２の成形断熱材３４Ｂは、真空断熱材以外の断熱材である。これにより、真空断熱材を配置しないことで、仮に扉３内において結露が発生したとしても、成形断熱材（第１の成形断熱材３４Ａおよび第２の成形断熱材３４Ｂ）が劣化するのを防止できる。 As described above, the door 3 of this embodiment includes the door panel 31, the door liner 32, the door frame 33 arranged therebetween, and the space S surrounded by the door panel 31, the door liner 32, and the door frame 33. and molded insulation 34 disposed thereon. As the formed heat insulating material 34, a first formed heat insulating material 34A arranged on the door panel 31 side and a second formed heat insulating material 34B arranged on the door liner 32 side and having a lower thermal conductivity than the first formed heat insulating material 34A. , and the second molded heat insulating material 34B is a heat insulating material other than a vacuum heat insulating material. As a result, even if dew condensation occurs inside the door 3, deterioration of the formed heat insulating materials (the first formed heat insulating material 34A and the second formed heat insulating material 34B) is prevented by not arranging the vacuum heat insulating material. can.
　また、本実施形態において、第１の成形断熱材３４Ａは、ドアライナ３２側に向けて開口する凹部４０を備え、第２の成形断熱材３４Ｂは、凹部４０に収容されている。これによれば、内側（ドアライナ３２側）に第２の成形断熱材３４Ｂを配置することで断熱性能を高めることができる。 In addition, in this embodiment, the first heat insulator 34A has a recess 40 that opens toward the door liner 32, and the second heat insulator 34B is accommodated in the recess 40. According to this, heat insulating performance can be improved by arranging the second molded heat insulating material 34B on the inner side (door liner 32 side).
　また、本実施形態において、ドアライナ３２は、格子状の凹凸部３２ｂを備えている。これによれば、ドアライナ３２を補強することができ、ドアライナ３２の反りを抑えることができる。 In addition, in the present embodiment, the door liner 32 is provided with a lattice-shaped concave-convex portion 32b. According to this, the door liner 32 can be reinforced, and warp of the door liner 32 can be suppressed.
　また、本実施形態において、ドアライナ３２には、扉外部と連通する通気孔３２ｓが形成されている。これによれば、ドアライナ３２の表面の結露を防止することができる。 In addition, in this embodiment, the door liner 32 is formed with a vent hole 32s that communicates with the outside of the door. According to this, dew condensation on the surface of the door liner 32 can be prevented.
　また、本実施形態において、ドアライナ３２は、四角枠状に形成された土手３２ｄと、該土手３２ｄに囲まれた領域に配された格子状の凹凸部３２ｂを備え、通気孔３２ｔは、土手３２ｄの近傍に形成されている。これによれば、通気孔３２ｔを目立ちにくくすることができる。 Further, in the present embodiment, the door liner 32 includes a bank 32d formed in a rectangular frame shape and a lattice-shaped concave-convex portion 32b arranged in an area surrounded by the bank 32d. is formed in the vicinity of According to this, the vent hole 32t can be made inconspicuous.
　また、本実施形態において、ドアライナ３２は、格子状の凹凸部３２ｂを備える。通気孔３２ｓは、凹凸部３２ｂのそれぞれの凸面部３２ｂ３の下端に形成されている。これによれば、ユーザに通気孔３２ｓを目立たなくさせることができる。 In addition, in the present embodiment, the door liner 32 is provided with a lattice-shaped concave-convex portion 32b. 32 s of ventilation holes are formed in the lower end of each convex-surface part 32b3 of the uneven|corrugated|grooved part 32b. According to this, it is possible to make the ventilation hole 32s inconspicuous to the user.
　また、本実施形態において、第２の成形断熱材３４Ｂは、ドアパネル３１側の面とドアライナ３２側の面に防水性のシート５１，５２が積層されている。これによれば、第２の成形断熱材３４Ｂに対して結露水が浸み込むことを防止できる。 In addition, in this embodiment, waterproof sheets 51 and 52 are laminated on the surface on the door panel 31 side and the surface on the door liner 32 side of the second molded heat insulating material 34B. According to this, it is possible to prevent the dew condensation water from penetrating into the second molded heat insulating material 34B.
　また、本実施形態において、凹部４０の側壁４０ｂは、ドアフレーム３３側に向けて拡大するように傾斜するテーパ面４０ｂ１が形成されている。これによれば、第２の成形断熱材３４Ｂを第１の成形断熱材３４Ａの凹部４０に挿入し易くなり、製造し易くなる。 Further, in the present embodiment, the side wall 40b of the recess 40 is formed with a tapered surface 40b1 that is inclined so as to expand toward the door frame 33 side. This makes it easier to insert the second heat insulator 34B into the recess 40 of the first heat insulator 34A, which facilitates manufacturing.
　また、本実施形態において、ドアライナ３２には、断熱箱体２との隙間を密閉するドアパッキン３５が取り付けられる溝３２ｃが形成されている。第１の成形断熱材３４Ａには、溝３２ｃが挿入される挿入凹部３４ｓが形成される。挿入凹部３４ｓと溝３２ｃとの間にはシール材３６が設けられている。これによれば、外部から扉３内のドアライナ３２と第１の成形断熱材３４Ａとの隙間に入る多湿の空気が溝３２ｃの位置で遮断される。その結果として、第２の成形断熱材３４Ｂ側に多湿の空気が流れ込むのを抑制することができ、第２の成形断熱材３４Ｂの劣化を抑えることが可能になる。 In addition, in this embodiment, the door liner 32 is formed with a groove 32c in which a door packing 35 for sealing the gap with the heat insulating box body 2 is attached. An insertion recess 34s into which the groove 32c is inserted is formed in the first molded heat insulator 34A. A sealing material 36 is provided between the insertion recess 34s and the groove 32c. According to this, humid air entering the gap between the door liner 32 in the door 3 and the first molded heat insulating material 34A from the outside is blocked at the position of the groove 32c. As a result, it is possible to suppress the flow of humid air toward the second heat insulator 34B side, thereby suppressing the deterioration of the second heat insulator 34B.
　また、本実施形態の貯蔵庫１は、扉３と、扉３によって閉塞する断熱箱体２と、を備え、断熱箱体２は、冷蔵温度帯の貯蔵室である。これによれば、結露水が凍ることがなくなり、結露水の水と氷の繰り返しによる劣化の影響を抑えることができる。 In addition, the storage 1 of this embodiment includes a door 3 and a heat insulating box 2 closed by the door 3, and the heat insulating box 2 is a refrigerating temperature zone storage room. According to this, the condensed water will not freeze, and it is possible to suppress the influence of the deterioration of the condensed water due to repetition of water and ice.
　また、本実施形態の貯蔵庫１は、扉３と、扉３によって閉塞する断熱箱体２と、を備え、断熱箱体２は、内箱、外箱、これらの間に配された断熱材、及び内箱と断熱材との間に形成された隙間を備え、内箱は、通気孔を有する。 Further, the storage 1 of the present embodiment includes a door 3 and a heat insulating box body 2 closed by the door 3. The heat insulating box body 2 includes an inner box, an outer box, a heat insulating material disposed therebetween, and a gap formed between the inner box and the heat insulating material, and the inner box has a vent.
　なお、本発明は前記した実施形態に限定されるものではなく、種々の変形例を含むことができる。例えば、ドアパネル３１とドアフレーム３３とが樹脂成形によって一体に形成されたものであってもよく、またドアライナ３２とドアフレーム３３とが樹脂成形によって一体に形成されたものであってもよい。これにより、扉３の組み立てを簡略化できる。 It should be noted that the present invention is not limited to the above-described embodiments, and can include various modifications. For example, the door panel 31 and the door frame 33 may be integrally formed by resin molding, or the door liner 32 and the door frame 33 may be integrally formed by resin molding. Thereby, assembly of the door 3 can be simplified.
　１　　　貯蔵庫
　２　　　断熱箱体
　３　　　扉（断熱扉）
　１０　　貯蔵室
　３１　　ドアパネル（前板）
　３２　　ドアライナ（後板）
　３２ｂ　凹凸部
　３２ｂ１，３２ｂ２　凹条部
　３２ｂ３　凸面部
　３２ｃ　溝
　３２ｄ　土手
　３２ｓ，３２ｔ　通気孔
　３３　　ドアフレーム（フレーム）
　３４　　成形断熱材
　３４Ａ　第１の成形断熱材
　３４Ｂ　第２の成形断熱材
　３４ｓ　挿入凹部
　３５　　ドアパッキン
　３６　　シール材
　４０　　凹部
　４０ａ　底壁
　４０ｂ　側壁
　４０ｂ１　テーパ面
　５１，５２シート（防水シート）
　Ｓ　　　空間 1 storage 2 heat insulation box 3 door (heat insulation door)
10 storage room 31 door panel (front plate)
32 door liner (rear plate)
32b Concavo-convex portion 32b1, 32b2 Concave portion 32b3 Convex portion 32c Groove 32d Bank 32s, 32t Air vent 33 Door frame (frame)
34 Formed heat insulating material 34A First formed heat insulating material 34B Second formed heat insulating material 34s Insertion recess 35 Door packing 36 Sealing material 40 Recess 40a Bottom wall 40b Side wall 40b1 Tapered surface 51, 52 sheets (waterproof sheets)
S space

Claims (10)

  1. 　前板、後板、及びこれらの間に配されたフレームと、
    　前記前板、前記後板、及び前記フレームによって囲まれた空間に配された成形断熱材と、を備え、
    　前記成形断熱材として、前記前板側に配された第１の成形断熱材と、前記後板側に配されて前記第１の成形断熱材よりも低熱伝導率の第２の成形断熱材と、を備え、
    　前記第２の成形断熱材は、真空断熱材以外の断熱材である断熱扉。     a front plate, a rear plate, and a frame arranged therebetween;
    a molded insulation disposed in a space enclosed by the front plate, the rear plate, and the frame;
    As the formed heat insulating material, a first formed heat insulating material arranged on the front plate side and a second formed heat insulating material arranged on the rear plate side and having a lower thermal conductivity than the first formed heat insulating material. , and
    The heat insulating door, wherein the second molded heat insulating material is a heat insulating material other than a vacuum heat insulating material.
  2. 　前記第１の成形断熱材は、前記後板側に向けて開口する凹部を備え、
    　前記第２の成形断熱材は、前記凹部に収容されている請求項１に記載の断熱扉。     The first molded heat insulating material has a recess opening toward the rear plate side,
    2. The insulated door of claim 1, wherein said second molded insulation is received in said recess.
  3. 　前記後板には、扉外部と連通する通気孔が形成されている請求項１に記載の断熱扉。 The heat insulating door according to claim 1, wherein the rear plate is formed with a ventilation hole communicating with the outside of the door.
  4. 　前記後板は、四角枠状に形成された土手と、該土手に囲まれた領域に配された格子状の凹凸部を備え、
    　前記通気孔は、前記土手の近傍に形成されている請求項３に記載の断熱扉。     The rear plate includes a bank formed in the shape of a square frame, and a lattice-shaped uneven portion arranged in an area surrounded by the bank,
    4. The heat insulating door according to claim 3, wherein said ventilation hole is formed in the vicinity of said embankment.
  5. 　前記後板は、格子状の凹凸部を備え、
    　前記通気孔は、前記凹凸部のそれぞれの凸面部の下端に形成されている請求項３に記載の断熱扉。     The rear plate has a lattice-shaped concave and convex portion,
    4. The heat insulating door according to claim 3, wherein said ventilation hole is formed at the lower end of each convex portion of said uneven portion.
  6. 　前記第２の成形断熱材は、前記前板側の面と前記後板側の面に防水シートが積層されている請求項１に記載の断熱扉。 The heat insulating door according to claim 1, wherein the second molded heat insulating material has a waterproof sheet laminated on the front plate side surface and the rear plate side surface.
  7. 　前記凹部の側壁は、前記フレーム側に向けて拡大するように傾斜するテーパ面が形成されている請求項２に記載の断熱扉。 The heat insulating door according to claim 2, wherein a side wall of said recess is formed with a tapered surface that is inclined so as to expand toward said frame.
  8. 　前記後板には、断熱箱体との隙間を密閉するドアパッキンが取り付けられる溝が形成され、
    　前記第１の成形断熱材には、前記溝が挿入される挿入凹部が形成され、
    　前記挿入凹部と前記溝との間にはシール材が設けられていることを特徴とする請求項１に記載の断熱扉。     The rear plate is formed with a groove in which a door packing that seals the gap with the heat insulating box is attached,
    An insertion recess into which the groove is inserted is formed in the first molded heat insulating material,
    2. The heat insulating door according to claim 1, wherein a sealing material is provided between said insertion recess and said groove.
  9. 　請求項１から請求項８のいずれか１項に記載の断熱扉と、
    　前記断熱扉によって閉塞する断熱箱体と、を備え、
    　前記断熱箱体は、冷蔵温度帯の貯蔵室である貯蔵庫。     A heat insulating door according to any one of claims 1 to 8;
    and a heat insulating box closed by the heat insulating door,
    The heat-insulating box body is a storage room in a refrigeration temperature zone.
  10. 　請求項１から請求項８のいずれか１項に記載の断熱扉と、
    　前記断熱扉によって閉塞する断熱箱体と、を備え、
    　前記断熱箱体は、内箱、外箱、これらの間に配された断熱材、及び前記内箱と前記断熱材との間に形成された隙間を備え、
    　前記内箱は、通気孔を有する貯蔵庫。     A heat insulating door according to any one of claims 1 to 8;
    and a heat insulating box closed by the heat insulating door,
    The insulating box includes an inner box, an outer box, a heat insulating material disposed therebetween, and a gap formed between the inner box and the heat insulating material,
    The inner box is a storage box having a ventilation hole.
PCT/JP2022/025071 2022-02-10 2022-06-23 Insulated door and storage WO2023152996A1 (en)

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JP2022-019163 2022-02-10

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5474366U (en) * 1977-11-04 1979-05-26
JPS62284176A (en) * 1986-06-02 1987-12-10 松下冷機株式会社 Manufacture of heat-insulating door
JPH0163771U (en) * 1987-10-19 1989-04-24
JP2011102679A (en) * 2009-11-11 2011-05-26 Toshiba Corp Refrigerator
JP2013204900A (en) * 2012-03-28 2013-10-07 Sharp Corp Heat insulating box and refrigerator with the same
JP2020128836A (en) * 2019-02-08 2020-08-27 日立グローバルライフソリューションズ株式会社 Heat insulating door and refrigerator comprising the same
JP2021038921A (en) * 2013-09-24 2021-03-11 東芝ライフスタイル株式会社 refrigerator
JP2021119325A (en) * 2017-07-25 2021-08-12 日立グローバルライフソリューションズ株式会社 refrigerator
JP2021179282A (en) * 2020-05-14 2021-11-18 シャープ株式会社 refrigerator

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5474366U (en) * 1977-11-04 1979-05-26
JPS62284176A (en) * 1986-06-02 1987-12-10 松下冷機株式会社 Manufacture of heat-insulating door
JPH0163771U (en) * 1987-10-19 1989-04-24
JP2011102679A (en) * 2009-11-11 2011-05-26 Toshiba Corp Refrigerator
JP2013204900A (en) * 2012-03-28 2013-10-07 Sharp Corp Heat insulating box and refrigerator with the same
JP2021038921A (en) * 2013-09-24 2021-03-11 東芝ライフスタイル株式会社 refrigerator
JP2021119325A (en) * 2017-07-25 2021-08-12 日立グローバルライフソリューションズ株式会社 refrigerator
JP2020128836A (en) * 2019-02-08 2020-08-27 日立グローバルライフソリューションズ株式会社 Heat insulating door and refrigerator comprising the same
JP2021179282A (en) * 2020-05-14 2021-11-18 シャープ株式会社 refrigerator

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