JP6562682B2

JP6562682B2 - refrigerator

Info

Publication number: JP6562682B2
Application number: JP2015078680A
Authority: JP
Inventors: 正康津布久; 康位山崎; 浩俊渡邊
Original assignee: Hitachi Global Life Solutions Inc
Current assignee: Hitachi Global Life Solutions Inc
Priority date: 2015-04-07
Filing date: 2015-04-07
Publication date: 2019-08-21
Anticipated expiration: 2035-04-07
Also published as: CN106052276A; CN106052276B; JP2016200294A

Description

本発明は、扉の表面に設けられたガラス製の外板と、扉の内部に設けられた真空断熱材と、を備えた断熱扉を有する冷蔵庫に関する。 The present invention relates to a refrigerator having a heat insulating door provided with a glass outer plate provided on the surface of a door and a vacuum heat insulating material provided inside the door.

冷蔵庫の扉としては、光沢性を向上させるために、扉の表面にガラス製の外板を設けたものが知られている（例えば、特許文献１及び特許文献２参照）。特許文献１，２に記載の冷蔵庫の扉は、省エネルギー化及び省スペース化を図るために、断熱性の優れている真空断熱材と発泡断熱材とを内設して、断熱扉を構成している。 As a door of a refrigerator, in order to improve glossiness, what provided the glass outer plate on the surface of the door is known (for example, refer to patent documents 1 and patent documents 2). In order to save energy and save space, the refrigerator doors described in Patent Documents 1 and 2 are equipped with a heat insulating vacuum insulating material and a foam heat insulating material to form a heat insulating door. Yes.

図９は、従来の冷蔵庫の回動式開閉扉の構造を示す横断面図である。図１０は、従来の冷蔵庫の引出式扉の構造を示す分解斜視図である。図１１は、図１０のＩＩＩ−ＩＩＩ拡大断面図である。
一般に、冷蔵庫には、図９に示すような回動式の開閉扉である断熱扉１００と、図１０に示すような引出式扉の断熱扉２００との二種類の扉が採用されている。 FIG. 9 is a cross-sectional view showing the structure of a conventional rotary door of a refrigerator. FIG. 10 is an exploded perspective view showing a structure of a drawer door of a conventional refrigerator. 11 is an enlarged sectional view taken along the line III-III in FIG.
Generally, the refrigerator employs two types of doors: a heat-insulating door 100 that is a pivotal opening / closing door as shown in FIG. 9 and a heat-insulating door 200 as a drawer-type door as shown in FIG.

図９に示すように、回動式の断熱扉１００は、断熱扉１００の表面側の外壁を形成するガラス製の外板１１０と、外板１１０の周縁に設けられた扉枠１２０と、断熱扉１００の貯蔵室側に設けられた内板１３０と、断熱扉１００内の外板側に内設された真空断熱材１５０と、外板と内板と扉枠とで構成された空間内に充填された発泡断熱材１４０と、外板１１０を扉枠１２０に固定するための両面テープ１６０と、を備えている。 As shown in FIG. 9, the rotary heat insulating door 100 includes a glass outer plate 110 that forms an outer wall on the surface side of the heat insulating door 100, a door frame 120 provided on the periphery of the outer plate 110, and heat insulation. In the space constituted by the inner plate 130 provided on the storage chamber side of the door 100, the vacuum heat insulating material 150 provided on the outer plate side in the heat insulating door 100, the outer plate, the inner plate, and the door frame. A filled heat insulating material 140 and a double-sided tape 160 for fixing the outer plate 110 to the door frame 120 are provided.

外板１１０は、一端側を扉枠１２０の係合溝１２１に係合し、他端側を扉枠１２０の段差部１２２に貼付した両面テープ１６０に貼着させることによって、扉枠１２０に固定されている。真空断熱材１５０は、その外板１１０の裏面（内面）に載置して扉枠１２０内の空間に発泡断熱材１４０の材料を流し込んで、発泡断熱材１４０が、真空断熱材１５０を覆って外板１１０の裏面に接着されることによって固定されている。 The outer plate 110 is fixed to the door frame 120 by engaging one end side with the engagement groove 121 of the door frame 120 and attaching the other end side to a double-sided tape 160 attached to the step portion 122 of the door frame 120. Has been. The vacuum heat insulating material 150 is placed on the back surface (inner surface) of the outer plate 110 and the material of the foam heat insulating material 140 is poured into the space in the door frame 120, and the foam heat insulating material 140 covers the vacuum heat insulating material 150. It is fixed by being adhered to the back surface of the outer plate 110.

図１０及び図１１に示すように、引出式の断熱扉２００の場合も前記断熱扉１００と同様に、ガラス製の外板２１０は、一端側を扉枠２２０の係合溝２２１に係合させて、その他の側を扉枠２２０の段差部２２２に貼付した両面テープ２６０に貼着させることによって、扉枠２２０に固定されている。真空断熱材２５０は、その外板２１０の裏面に載置して扉枠２２０内の空間に発泡断熱材２４０の材料を流し込んで、発泡断熱材２４０が真空断熱材２５０を覆って外板２１０の裏面に接着されることによって固定されている。 As shown in FIGS. 10 and 11, also in the case of the drawer-type heat insulating door 200, as with the heat insulating door 100, the glass outer plate 210 has one end engaged with the engaging groove 221 of the door frame 220. The other side of the door frame 220 is fixed to the door frame 220 by being attached to a double-sided tape 260 attached to the step portion 222 of the door frame 220. The vacuum heat insulating material 250 is placed on the back surface of the outer plate 210 and the material of the foam heat insulating material 240 is poured into the space in the door frame 220, and the foam heat insulating material 240 covers the vacuum heat insulating material 250 and covers the outer plate 210. It is fixed by bonding to the back side.

特許第５３０３４１５号公報Japanese Patent No. 5303415 特開２０１５−１７７３６号公報JP 2015-17736 A

しかし、従来の冷蔵庫の断熱扉１００，２００、及び、特許文献１，２に記載の断熱扉は、発泡断熱材１４０，２４０が外板１１０，２１０に接着される面積Ｓ１００，Ｓ２００が小さい。このため、断熱扉１００，２００は、真空断熱材１５０，２５０を覆う発泡断熱材１４０，２４０が外板１１０，２１０の裏面にしっかりと接着されないという問題点があった。 However, the heat insulating doors 100 and 200 of the conventional refrigerator and the heat insulating doors described in Patent Documents 1 and 2 have small areas S100 and S200 where the foam heat insulating materials 140 and 240 are bonded to the outer plates 110 and 210. For this reason, the heat insulating doors 100 and 200 have a problem that the foam heat insulating materials 140 and 240 covering the vacuum heat insulating materials 150 and 250 are not firmly bonded to the back surfaces of the outer plates 110 and 210.

そのようなことから、外板１１０，２１０は、発泡断熱材１４０，２４０と両面テープ１６０，２６０とによって断熱扉１００，２００に固定されていても、発泡断熱材１４０，２４０による接着力が乏しいので、断熱扉１００，２００から剥離する虞があった。 Therefore, even if the outer plates 110 and 210 are fixed to the heat insulating doors 100 and 200 by the foam heat insulating materials 140 and 240 and the double-sided tapes 160 and 260, the adhesive strength by the foam heat insulating materials 140 and 240 is poor. Therefore, there was a possibility of peeling from the heat insulating doors 100 and 200.

そこで、本発明は、発泡断熱材をしっかりと外板に貼り付けることができる冷蔵庫を提供することを課題とする。 Then, this invention makes it a subject to provide the refrigerator which can affix a foaming heat insulating material on an outer plate firmly.

前記課題を解決するために、本発明に係る冷蔵庫は、断熱扉の表面に設けられたガラス製の外板と、前記外板の周縁に設けられた扉枠と、前記外板の裏面に配置された真空断熱材と、前記外板と前記扉枠とで形成された空間に前記真空断熱材を介在させて充填された発泡断熱材と、前記扉枠に設けられた内板と、を備えた冷蔵庫であって、前記真空断熱材は、前記外板側の真空断熱材の長さが、前記内板側の真空断熱材の長さよりも小さく形成され、前記空間内には、前記外板の裏面に密着した状態に配置された樹脂製の薄膜状の部材からなる飛散防止フィルムと、前記飛散防止フィルムの裏面に密着した状態に配置された前記外板側の真空断熱材と、前記内板の表面に設けられた前記内板側の真空断熱材と、前記空間に充填された接着剤としての機能がある発泡断熱材と、が内設され、前記断熱扉は、前記内板を介在して前記内板の裏面に設けられる断熱箱体にねじ止めされた左右一対の金属製の補強板部材を備えた引出式扉からなり、前記左右一対の補強板部材の表面全体を外側から覆って、正面視して前記左右一対の補強板部材に重なって配置された前記外板側の真空断熱材と、前記左右一対の補強板部材間に配置された前記内板側の真空断熱材と、前記発泡断熱材と、を介在して重ねた三重構造になっていることを特徴とする。
ここで、「表面」側とは、冷蔵庫の前側（外側）をいう。このため、「内板の表面」は、冷蔵庫の前側（外側）をいう。また、「裏面」側とは、冷蔵庫の後側（貯蔵室側）をいう。 In order to solve the above problems, a refrigerator according to the present invention is arranged on a glass outer plate provided on a surface of a heat insulating door, a door frame provided on a peripheral edge of the outer plate, and a rear surface of the outer plate. A vacuum heat insulating material, a foam heat insulating material filled with the vacuum heat insulating material in a space formed by the outer plate and the door frame, and an inner plate provided on the door frame. The vacuum heat insulating material is formed such that a length of the vacuum heat insulating material on the outer plate side is smaller than a length of the vacuum heat insulating material on the inner plate side , and the outer plate is formed in the space. An anti-scattering film made of a resinous thin film-like member arranged in close contact with the back surface of the outer plate, a vacuum heat insulating material on the outer plate arranged in close contact with the back surface of the anti-scattering film, and the inner A vacuum heat insulating material on the inner plate provided on the surface of the plate, and an adhesive filled in the space; And a pair of left and right metal reinforcements screwed to a heat insulating box provided on the back surface of the inner plate with the inner plate interposed therebetween. A vacuum on the outer plate side, which is composed of a pull-out type door provided with a plate member, covers the entire surface of the pair of left and right reinforcing plate members from the outside, and overlaps with the pair of left and right reinforcing plate members when viewed from the front. It has a triple structure in which a heat insulating material, a vacuum heat insulating material on the inner plate side disposed between the pair of left and right reinforcing plate members, and the foam heat insulating material are interposed .
Here, the “surface” side means the front side (outside) of the refrigerator. For this reason, the “surface of the inner plate” refers to the front side (outside) of the refrigerator. Further, the “back surface” side means the rear side (storage room side) of the refrigerator.

かかる構成によれば、冷蔵庫の断熱扉は、真空断熱材の外板側の長さが、内板側の長さよりも小さく形成されていることによって、真空断熱材の外板側の長さが小さくなったことに伴って、真空断熱材を介在させて充填された発泡断熱材が外板に接する面積を拡大させることができる。このため、発泡断熱材は、真空断熱材をしっかりと外板の裏面に貼り付けることができる。 According to such a configuration, the heat insulating door of the refrigerator is formed so that the length of the vacuum insulating material on the outer plate side is smaller than the length of the inner plate side, so that the length of the vacuum insulating material on the outer plate side is increased. Along with the reduction in size, it is possible to expand the area where the foamed heat insulating material filled with the vacuum heat insulating material is in contact with the outer plate. For this reason, a foam heat insulating material can affix a vacuum heat insulating material firmly on the back surface of an outer plate | board.

本発明に係る冷蔵庫は、発泡断熱材を外板にしっかりと貼り付けることができて、外板が断熱扉から剥離するのを抑制することができる。 The refrigerator which concerns on this invention can affix a foam heat insulating material on an outer plate firmly, and can suppress that an outer plate peels from a heat insulation door.

本発明の実施形態に係る冷蔵庫の一例を示す正面図である。It is a front view which shows an example of the refrigerator which concerns on embodiment of this invention. 冷蔵庫の回動式の断熱扉を示す正面図である。It is a front view which shows the rotation-type heat insulation door of a refrigerator. 回動式の断熱扉を示す分解斜視図である。It is a disassembled perspective view which shows a rotation-type heat insulation door. 図２のＩ−Ｉ拡大断面図である。It is II expanded sectional drawing of FIG. 冷蔵庫の引出式の断熱扉を示す分解斜視図である。It is a disassembled perspective view which shows the drawer-type heat insulation door of a refrigerator. 図５のＩＩ−ＩＩ拡大断面図である。It is II-II expanded sectional drawing of FIG. 引出式の断熱扉を示す概略正面図である。It is a schematic front view which shows a drawer-type heat insulation door. （ａ）〜（ｃ）は、断熱扉の変形例を示す横断面図である。(A)-(c) is a cross-sectional view which shows the modification of a heat insulation door. 従来の冷蔵庫の回動式開閉扉の構造を示す横断面図である。It is a cross-sectional view which shows the structure of the rotation type opening / closing door of the conventional refrigerator. 従来の冷蔵庫の引出式扉の構造を示す分解斜視図である。It is a disassembled perspective view which shows the structure of the drawer-type door of the conventional refrigerator. 図１０のＩＩＩ−ＩＩＩ拡大断面図である。It is III-III expanded sectional drawing of FIG.

まず、図１〜図７を参照しながら本発明の実施形態に係る冷蔵庫の一例を説明する。
以下、本発明の実施形態として、６ドアタイプの冷蔵庫１を例に挙げて説明するが、ドアの数は限定されず、５ドア以下のタイプや、１ドアタイプに適用してもよい。また、以下では、冷蔵庫１を正面から見たときの方向を基準として説明する。また、以下に示す図面において、同一の部材には適宜同一の参照符号を付し、重複した説明を適宜省略する。また、部材のサイズ及び形状は、説明の便宜のため、変形または誇張して模式的に表す場合がある。 First, an example of a refrigerator according to an embodiment of the present invention will be described with reference to FIGS.
Hereinafter, as an embodiment of the present invention, a six-door type refrigerator 1 will be described as an example, but the number of doors is not limited, and may be applied to a five-door type or a one-door type. Moreover, below, it demonstrates on the basis of the direction when the refrigerator 1 is seen from the front. Further, in the drawings shown below, the same members are denoted by the same reference numerals as appropriate, and repeated descriptions are omitted as appropriate. In addition, the size and shape of the member may be schematically represented by being deformed or exaggerated for convenience of explanation.

≪冷蔵庫≫
図１に示すように、冷蔵庫１は、冷蔵室２、製氷室３、切替室（上段冷凍室、急速冷凍室）４、下段冷凍室５（引出室、第１貯蔵室／以下、「冷凍室５」とする）、及び、野菜室６（引出室、第２貯蔵室）を備えている。 ≪Refrigerator≫
As shown in FIG. 1, the refrigerator 1 includes a refrigerator compartment 2, an ice making compartment 3, a switching compartment (upper freezer compartment, quick freezer compartment) 4, a lower freezer compartment 5 (drawer compartment, first storage compartment / below, “freezer compartment” 5 ”) and a vegetable room 6 (drawer room, second storage room).

冷蔵庫１は、冷蔵室２を開閉する回動式（ヒンジ式）の断熱扉２ａ，２ｂと、製氷室３を開閉する引出式の断熱扉３ａと、切替室４を開閉する引出式の断熱扉４ａと、冷凍室５を開閉する引出式の断熱扉５ａと、野菜室６を開閉する引出式の断熱扉６ａと、をそれぞれ備えている。 The refrigerator 1 includes rotating (hinge) heat insulating doors 2 a and 2 b that open and close the refrigerator compartment 2, a drawer heat insulating door 3 a that opens and closes the ice making chamber 3, and a drawer heat insulating door that opens and closes the switching chamber 4. 4a, a drawer-type heat insulating door 5a for opening and closing the freezer compartment 5, and a drawer-type heat insulating door 6a for opening and closing the vegetable compartment 6 are provided.

≪断熱扉≫
回動式の断熱扉２ａ，２ｂは、同様の構成である。このため、図２に示す断熱扉２ａを代表して回動式扉を説明する。また、図５〜図７に示す引出式の断熱扉３ａ，４ａ，５ａ，６ａは、同様な構成であるので、代表して断熱扉５ａを後記する。 ≪Insulated door≫
The rotary heat insulating doors 2a and 2b have the same configuration. For this reason, a rotary door is demonstrated on behalf of the heat insulation door 2a shown in FIG. Moreover, since the drawer-type heat insulation doors 3a, 4a, 5a, and 6a shown in FIGS. 5 to 7 have the same configuration, the heat insulation door 5a will be described later as a representative.

≪回動式の断熱扉≫
まず、図３及び図４を参照して回動式の断熱扉２ａを説明する。
図３に示すように、断熱扉２ａは、断熱扉２ａの表面に設けられたガラス製の外板１０と、外板１０の周縁に設けられた扉枠２０と、外板１０の裏面に配置された真空断熱材３０と、外板１０と扉枠２０とで形成された空間４０に真空断熱材３０を介在させて充填された発泡断熱材５０（図４参照）と、扉枠２０の裏面に設けられた内板６０と、外板１０を扉枠２０に固定するための両面テープ７０と、を備えて構成されている。 ≪Rotating insulation door≫
First, with reference to FIG.3 and FIG.4, the rotation-type heat insulation door 2a is demonstrated.
As shown in FIG. 3, the heat insulating door 2 a is disposed on the glass outer plate 10 provided on the surface of the heat insulating door 2 a, the door frame 20 provided on the periphery of the outer plate 10, and the back surface of the outer plate 10. And the foam insulation 50 filled with the vacuum insulation 30 interposed in the space 40 formed by the outer plate 10 and the door frame 20, and the back surface of the door frame 20. Are provided with an inner plate 60 and a double-sided tape 70 for fixing the outer plate 10 to the door frame 20.

＜外板＞
外板１０は、断熱扉２ａの表面（前面）側の外壁を形成する透光性の矩形の平板部材から成る。外板１０の外周部は、縦長の四角枠状の扉枠２０の内側前端部に装着されて、扉枠２０によって覆われている。外板１０は、右側の枠部材２１の係合溝２１ａ（図４参照）と、左上下側の枠部材２２，２３，２４のテープ貼付部２２ａ，２３ａ，２４ａに貼着された両面テープ７０と、によって扉枠２０に固定されている。なお、外板１０は、強化ガラス製の平板材が好ましいが、プラスチック等の透光性の扉板であってもよい。 <Outer plate>
The outer plate 10 is formed of a light-transmitting rectangular flat plate member that forms an outer wall on the front surface (front surface) side of the heat insulating door 2a. An outer peripheral portion of the outer plate 10 is attached to an inner front end portion of a vertically long rectangular frame-like door frame 20 and is covered with the door frame 20. The outer plate 10 has a double-sided tape 70 attached to the engagement groove 21a (see FIG. 4) of the right frame member 21 and the tape applying portions 22a, 23a, 24a of the left and upper frame members 22, 23, 24. And is fixed to the door frame 20. The outer plate 10 is preferably a flat plate made of tempered glass, but may be a translucent door plate such as plastic.

＜扉枠＞
図３に示すように、扉枠２０は、矩形の断熱扉２ａの外周部位を形成する樹脂製の枠体である。扉枠２０は、外板１０の右辺部が挿入されて支持される係合溝２１ａを有する右側の枠部材２１と、外板１０の左辺部、上辺部、下辺部が貼り付けられる両面テープ７０が貼着されたテープ貼付部２２ａ，２３ａ，２４ａを有する上下左側の枠部材２２，２３，２４と、を四角形に連結して形成されている。 <Door frame>
As shown in FIG. 3, the door frame 20 is a resin frame that forms the outer peripheral portion of the rectangular heat insulating door 2 a. The door frame 20 includes a right frame member 21 having an engagement groove 21a that is supported by inserting the right side portion of the outer plate 10, and a double-sided tape 70 to which the left side portion, upper side portion, and lower side portion of the outer plate 10 are attached. The upper and lower left and right frame members 22, 23, and 24 having tape attaching portions 22 a, 23 a, and 24 a attached thereto are connected in a square shape.

係合溝２１ａは、外板１０の右辺部が挿入される凹状溝から成る（図４参照）。
テープ貼付部２２ａ，２３ａ，２４ａは、上下左側の枠部材２２，２３，２４の内縁部に、断面視して、外板１０の厚さと両面テープ７０の厚さを加算した高さだけ、扉枠２０の表面から段差状に窪んで形成された平面視して帯状に延設された平らな部位である（図４参照）。
両面テープ７０は、表面及び裏面の両面が貼着可能な細長い帯状の粘着テープである。 The engaging groove 21a is a concave groove into which the right side portion of the outer plate 10 is inserted (see FIG. 4).
The tape applying portions 22a, 23a, 24a are doors corresponding to the height obtained by adding the thickness of the outer plate 10 and the thickness of the double-sided tape 70 as viewed in cross section to the inner edge portions of the upper and lower left and right frame members 22, 23, 24. It is a flat part formed in a step shape from the surface of the frame 20 and extending in a band shape in plan view (see FIG. 4).
The double-sided tape 70 is an elongated strip-like adhesive tape that can be attached to both the front and back surfaces.

＜真空断熱材＞
真空断熱材３０は、その材質は特に限定されないが、一例を挙げると、多孔質構造のグラスウール等の芯材をラミネートフィルムで真空パックして内部を減圧して封止した断熱材から成り、気体熱伝導率が略ゼロであるため、優れた断熱性能を有している。 <Vacuum insulation>
The material of the vacuum heat insulating material 30 is not particularly limited. For example, the vacuum heat insulating material 30 is made of a heat insulating material in which a core material such as glass wool having a porous structure is vacuum-packed with a laminate film and the inside is decompressed and sealed. Since the thermal conductivity is substantially zero, it has excellent heat insulation performance.

図４に示すように、真空断熱材３０は、外板１０の裏面に載置して空間４０に発泡断熱材５０を充填することによって、断熱扉２ａに内設された平板状の部材から成る。真空断熱材３０の長さＬ１（横幅）は、縦断面視して、テープ貼付部２２ａと係合溝２１ａ間との距離Ｌ５よりも、長さＬ３だけ短く形成されている。このため、真空断熱材３０は、テープ貼付部２２ａと係合溝２１ａとの間に間隔Ｌ３を介して、枠部材２１，２２から中央側に離間されて配置されている。 As shown in FIG. 4, the vacuum heat insulating material 30 is composed of a flat plate-like member installed in the heat insulating door 2a by being placed on the back surface of the outer plate 10 and filling the space 40 with the foam heat insulating material 50. . The length L1 (horizontal width) of the vacuum heat insulating material 30 is shorter than the distance L5 between the tape applying portion 22a and the engagement groove 21a by a length L3 when viewed in a longitudinal section. For this reason, the vacuum heat insulating material 30 is arrange | positioned spaced apart from the frame members 21 and 22 to the center side via the space | interval L3 between the tape sticking part 22a and the engaging groove 21a.

また、真空断熱材３０は、外板１０側の端部３０ｂの表面側に段差部３０ａが切欠形成されて、段差部３０ａと外板１０との間に隙間Ｓが形成されている。このため、真空断熱材３０は、外板１０側（表側）の長さＬ２が、内板６０側の長さＬ１よりも小さく形成されている。その結果、空間４０に発泡断熱材５０を充填された際に、発泡断熱材５０が隙間Ｓに入り込んで外板１０に触れるので、段差部３０ａ及び隙間Ｓがあることによって、発泡断熱材５０と外板１０とが密着して接着される面積が拡大されている。 Further, in the vacuum heat insulating material 30, a step portion 30 a is notched on the surface side of the end portion 30 b on the outer plate 10 side, and a gap S is formed between the step portion 30 a and the outer plate 10. For this reason, the vacuum heat insulating material 30 is formed such that the length L2 on the outer plate 10 side (front side) is smaller than the length L1 on the inner plate 60 side. As a result, when the space 40 is filled with the foam heat insulating material 50, the foam heat insulating material 50 enters the gap S and touches the outer plate 10, so that the stepped portion 30a and the gap S cause the foam heat insulating material 50 and The area where the outer plate 10 is adhered and adhered is enlarged.

＜空間＞
前記空間４０は、断熱扉２ａを製造する際に、高温状態の発泡断熱材５０の材料が流し込まれる部位であり、真空断熱材３０を載置した外板１０と、扉枠２０と、で形成されている。このため、完成された断熱扉２ａ内には、発泡断熱材５０が充填されているので、その空間４０が無い。 <Space>
The space 40 is a portion into which the material of the foamed heat insulating material 50 in a high temperature state is poured when the heat insulating door 2 a is manufactured, and is formed by the outer plate 10 on which the vacuum heat insulating material 30 is placed and the door frame 20. Has been. For this reason, in the completed heat insulation door 2a, since the foam heat insulating material 50 is filled, the space 40 does not exist.

＜発泡断熱材＞
図４に示す発泡断熱材５０は、断熱材としての機能と、接着剤としての機能と、を備えている。発泡断熱材５０は、中央部に真空断熱材３０を載置した外板１０と、外板１０の外周に取り付けられた扉枠２０とで形成された空間４０に、真空断熱材３０を介在させて充填されることによって、空間４０の内壁面に接着される。このため、発泡断熱材５０は、真空断熱材３０を覆った状態で外板１０の裏面に接着されている。 <Foam insulation>
The foam heat insulating material 50 shown in FIG. 4 has a function as a heat insulating material and a function as an adhesive. The foam heat insulating material 50 has the vacuum heat insulating material 30 interposed in a space 40 formed by the outer plate 10 on which the vacuum heat insulating material 30 is placed in the center and the door frame 20 attached to the outer periphery of the outer plate 10. By being filled in, it is adhered to the inner wall surface of the space 40. For this reason, the foam heat insulating material 50 is bonded to the back surface of the outer plate 10 while covering the vacuum heat insulating material 30.

＜内板＞
内板６０は、断熱扉２ａの貯蔵室側に設けられた樹脂製の板部材である。内板６０は、扉枠２０の裏面側の周縁部に固定されている。内板６０の裏面側の外周部には、断熱扉２ａを冷蔵庫本体と密着させて貯蔵室の気密性を確保するためのシール部材（図示省略）が設けられている。 <Inner plate>
The inner plate 60 is a resin plate member provided on the storage chamber side of the heat insulating door 2a. The inner plate 60 is fixed to the peripheral edge portion on the back surface side of the door frame 20. A seal member (not shown) is provided on the outer peripheral portion on the back surface side of the inner plate 60 for ensuring the airtightness of the storage room by bringing the heat insulating door 2a into close contact with the refrigerator body.

≪回動式の断熱扉の作用≫
次に、図３及び図４を主に参照しながら本発明の実施形態に係る冷蔵庫１の回動式の断熱扉２ａの作用を組立順に沿って説明する。 ≪Operation of a rotating heat insulating door≫
Next, the operation of the rotary heat insulating door 2a of the refrigerator 1 according to the embodiment of the present invention will be described in the order of assembly with reference mainly to FIGS.

回動式の断熱扉２ａを組み立てる場合は、まず、図３に示すように、枠部材２２のテープ貼付部２２ａと、枠部材２３のテープ貼付部２３ａと、枠部材２４のテープ貼付部２４ａとにそれぞれ両面テープ７０（図４参照）を貼り付ける。次に、外板１０の右端部を枠部材２１の係合溝２１ａ（図４参照）に挿入し、外板１０の上下左端部を枠部材２２、枠部材２３及び枠部材２４の両面テープ７０に、外板１０の外周部をそれぞれ貼り付ける。 When assembling the rotary heat insulating door 2a, first, as shown in FIG. 3, the tape applying portion 22a of the frame member 22, the tape applying portion 23a of the frame member 23, and the tape applying portion 24a of the frame member 24 A double-sided tape 70 (see FIG. 4) is attached to each. Next, the right end portion of the outer plate 10 is inserted into the engaging groove 21a (see FIG. 4) of the frame member 21, and the upper and lower left ends of the outer plate 10 are inserted into the double-sided tape 70 of the frame member 22, the frame member 23, and the frame member 24. Further, the outer peripheral portion of the outer plate 10 is pasted.

続いて、図４に示すように、外板１０を下側に配置して、その外板１０の裏面中央部に真空断熱材３０を載置して、空間４０内に発泡断熱材５０の材料を充填する。次に、扉枠２０の裏面側周縁部に内板６０を設けて、空間４０を閉塞する。このようにして断熱扉２ａは、組み立てられる。 Subsequently, as shown in FIG. 4, the outer plate 10 is disposed on the lower side, the vacuum heat insulating material 30 is placed on the center of the back surface of the outer plate 10, and the material of the foam heat insulating material 50 in the space 40. Fill. Next, the inner plate 60 is provided on the peripheral edge of the back side of the door frame 20 to close the space 40. In this way, the heat insulating door 2a is assembled.

このようにして組み立てられた断熱扉２ａ内の真空断熱材３０は、外板１０に当接している外板１０側（表面側）の長さＬ１が、内板６０側（裏面側）の長さＬ２よりも小さく形成されている（Ｌ１＞Ｌ２）。真空断熱材３０の外板１０側の表面の端部には、段差部３０ａが形成されているので、隙間Ｓが形成されている。このため、発泡断熱材５０は、外板１０の裏面に密着して接着される面積をその段差部３０ａ（隙間Ｓ）がある分だけ広げることができるので、発泡断熱材５０による外板１０への接着力を増加させることができる。 As for the vacuum heat insulating material 30 in the heat insulation door 2a assembled in this way, the length L1 on the outer plate 10 side (front surface side) contacting the outer plate 10 is longer than the inner plate 60 side (back surface side). It is formed smaller than the length L2 (L1> L2). Since the step portion 30a is formed at the end portion of the surface of the vacuum heat insulating material 30 on the outer plate 10 side, a gap S is formed. For this reason, since the foam heat insulating material 50 can enlarge the area adhered and adhered to the back surface of the outer plate 10 by the stepped portion 30a (gap S), the foam heat insulating material 50 is directed to the outer plate 10. Can increase the adhesive strength.

このように、接着剤としての機能がある発泡断熱材５０は、真空断熱材３０を覆った状態で外板１０に広範囲に亘って接着されるので、特別な固定具及び接着剤を使用せずに、真空断熱材３０を外板１０にしっかりと固定することができる。その結果、外板１０は、扉枠２０から離脱すること無くしっかりと固定される。 As described above, the foam heat insulating material 50 having a function as an adhesive is adhered to the outer plate 10 over a wide range in a state of covering the vacuum heat insulating material 30, so that no special fixture or adhesive is used. In addition, the vacuum heat insulating material 30 can be firmly fixed to the outer plate 10. As a result, the outer plate 10 is firmly fixed without being detached from the door frame 20.

このため、図１に示す回動式の断熱扉２ｂも、断熱扉２ａと同様に構成されているので、外板１０を扉枠２０から離脱すること無くしっかりと固定させることができる。このように形成された回動式の断熱扉２ａ，２ｂは、内部の空間４０の発泡断熱材５０の材料を充填し、さらに、発泡断熱材５０と外板１０との間に真空断熱材３０が介在されているので、断熱効果を向上させて省エネルギー化を図ることができる。 For this reason, since the rotary heat insulation door 2b shown in FIG. 1 is also configured similarly to the heat insulation door 2a, the outer plate 10 can be firmly fixed without being detached from the door frame 20. The rotary heat insulating doors 2 a and 2 b formed in this way are filled with the material of the foam heat insulating material 50 in the internal space 40, and the vacuum heat insulating material 30 is further interposed between the foam heat insulating material 50 and the outer plate 10. Therefore, the heat insulation effect can be improved and energy saving can be achieved.

また、回動式の断熱扉２ａ，２ｂは、ガラス製の外板１０が、扉枠２０内の表面全体に配置された構造になっていることにより、外板を鋼板で形成した扉と比較して、扉枠２０内の空間４０に充填された高温状態の発泡断熱材５０の収縮による変形が少ない。よって、断熱扉２ａ，２ｂの表面のフラット感をさらに高めることができる。 Moreover, the rotation type heat insulating doors 2a and 2b have a structure in which the outer plate 10 made of glass is arranged on the entire surface in the door frame 20, so that the outer plate is compared with a door formed of a steel plate. And the deformation | transformation by shrinkage | contraction of the foam heat insulating material 50 of the high temperature state with which the space 40 in the door frame 20 was filled is few. Therefore, the flatness of the surfaces of the heat insulating doors 2a and 2b can be further enhanced.

≪引出式の断熱扉≫
次に、図５〜図７を参照して引出式の断熱扉５ａを説明する。
図５に示すように、引出式の断熱扉５ａは、ガラス製の外板１０Ａと、扉枠２０Ａと、両面テープ７０Ａと、飛散防止フィルム９０Ａと、外板側の真空断熱材３１Ａと、内板側の真空断熱材３２Ａと、発泡断熱材５０Ａと、補強板部材８０Ａと、内板６０Ａと、内板側の真空断熱材３２Ａと、を備えて構成されている。 ≪Drawer-type insulated doors≫
Next, the drawer-type heat insulating door 5a will be described with reference to FIGS.
As shown in FIG. 5, the drawer-type heat insulating door 5a includes a glass outer plate 10A, a door frame 20A, a double-sided tape 70A, a scattering prevention film 90A, a vacuum insulating material 31A on the outer plate side, The plate-side vacuum heat insulating material 32A, the foam heat insulating material 50A, the reinforcing plate member 80A, the inner plate 60A, and the inner plate-side vacuum heat insulating material 32A are provided.

なお、図１に示す冷蔵庫１の各引出式の断熱扉３ａ，４ａ，５ａ，６ａには、各貯蔵室側に、開口した箱型形状の断熱箱体（図示省略）が設けられている。図５に示すように、断熱扉５ａ（３ａ，４ａ，６ａ）は、断熱箱体（図示省略）が取り付けられる内板６０Ａの表面（前面）に、左右一対の金属製の補強板部材８０Ａと、内板側の真空断熱材３２Ａと、が取り付けられている点で、前記回動式の断熱扉２ａ，２ｂ（図１参照）と相違している。 In addition, each drawer-type heat insulation door 3a, 4a, 5a, 6a of the refrigerator 1 shown in FIG. 1 is provided with an open box-shaped heat insulation box (not shown) on each storage chamber side. As shown in FIG. 5, the heat insulating door 5a (3a, 4a, 6a) includes a pair of left and right metal reinforcing plate members 80A on the surface (front surface) of an inner plate 60A to which a heat insulating box (not shown) is attached. The inner-plate-side vacuum heat insulating material 32A is attached to the rotary heat insulating doors 2a and 2b (see FIG. 1).

＜外板＞
外板１０Ａは、前記回動式の断熱扉２ａの外板１０（図３参照）と同様、断熱扉５ａの表面に設けられた横長の矩形のガラス製の平板材から成る。 <Outer plate>
Similar to the outer plate 10 (see FIG. 3) of the rotary heat insulating door 2a, the outer plate 10A is made of a horizontally long rectangular glass flat plate provided on the surface of the heat insulating door 5a.

＜扉枠＞
扉枠２０Ａは、外板１０Ａの周縁に設けられた四角形状の枠材である。扉枠２０Ａは、前記回動式の断熱扉２ａの扉枠２０（図３参照）と同様、枠部材２１Ａと、枠部材２２Ａと、枠部材２３Ａと、枠部材２４Ａとを横長の矩形状に連結して構成されている。上側の枠部材２４Ａには、利用者が開閉する際に手を掛けるための手掛部（図示省略）が形成されている。 <Door frame>
The door frame 20A is a quadrangular frame member provided on the periphery of the outer plate 10A. As with the door frame 20 (see FIG. 3) of the rotary heat insulating door 2a, the door frame 20A has a frame member 21A, a frame member 22A, a frame member 23A, and a frame member 24A in a horizontally long rectangular shape. Concatenated. The upper frame member 24A is formed with a handle portion (not shown) for the user to hold when opening and closing.

＜両面テープ＞
両面テープ７０Ａは、前記回動式の断熱扉２ａの両面テープ７０（図３参照）と同様、外板１０Ａを扉枠２０Ａに固定するための帯状の粘着テープである。両面テープ７０Ａは、枠部材２１Ａ，２２Ａ，２３Ａのテープ貼付部２１Ａａ，２２Ａａ，２３Ａａに貼着されている。 <Double-sided tape>
The double-sided tape 70A is a belt-like adhesive tape for fixing the outer plate 10A to the door frame 20A, similarly to the double-sided tape 70 (see FIG. 3) of the rotary heat insulating door 2a. The double-sided tape 70A is attached to the tape attaching portions 21Aa, 22Aa, and 23Aa of the frame members 21A, 22A, and 23A.

＜飛散防止フィルム＞
飛散防止フィルム９０Ａは、外板１０Ａの裏面に配置された樹脂製の薄膜状の部材である。飛散防止フィルム９０Ａは、フィルム状の部材であれば、その材質は特に限定されない。飛散防止フィルム９０Ａは、例えば、その一例を挙げると、外板１０Ａの裏面に設けられたポリエステルフィルム（ＰＥＴフィルム）が挙げられる。そのＰＥＴフィルムは、強度が高くガラスが割れた際の飛散防止にも効果がある。また、ＰＥＴフィルムは、透明性が高く、飛散防止フィルム９０Ａの基材の背面に印刷を施すことにより、フィルムを通して塗料層が見えるので、光沢が出て高級感がある意匠性の高い装飾シートとすることが可能である。また、ＰＥＴフィルムは、耐熱・耐寒性に優れており、発泡断熱材５０Ａ（図６参照）の充填時の高温に対して、塗料層を保護できると共に、外板１０Ａから伝達される外気温の影響が少ない。 <Spattering prevention film>
The scattering prevention film 90 A is a resinous thin film member disposed on the back surface of the outer plate 10 A. The material for the anti-scattering film 90A is not particularly limited as long as it is a film-like member. An example of the anti-scattering film 90A is a polyester film (PET film) provided on the back surface of the outer plate 10A. The PET film has high strength and is effective in preventing scattering when the glass is broken. In addition, the PET film is highly transparent, and the coating layer can be seen through the film by printing on the back surface of the base material of the anti-scattering film 90A. Is possible. Further, the PET film is excellent in heat resistance and cold resistance, and can protect the paint layer against the high temperature at the time of filling with the foam heat insulating material 50A (see FIG. 6), and the outside temperature transmitted from the outer plate 10A. There is little influence.

＜真空断熱材＞
図６に示すように、引出式の断熱扉５ａの空間４０Ａ内には、飛散防止フィルム９０Ａの裏面に配置された外板側の真空断熱材３１Ａと、内板６０Ａの表面に設けられた内板側の真空断熱材３２Ａとの二枚が内設されている。外板側の真空断熱材３１Ａと、内板側の真空断熱材３２Ａとは、前記回動式の断熱扉２ｂの真空断熱材３０（図４参照）と相違して、段差部３０ａが無いガラス製の平板材から成る。 <Vacuum insulation>
As shown in FIG. 6, in the space 40A of the drawer-type heat insulating door 5a, the vacuum insulating material 31A on the outer plate side disposed on the back surface of the scattering prevention film 90A and the inner surface provided on the surface of the inner plate 60A Two sheets with the board side vacuum heat insulating material 32A are provided. Unlike the vacuum heat insulating material 30 (see FIG. 4) of the rotary heat insulating door 2b, the vacuum heat insulating material 31A on the outer plate side and the vacuum heat insulating material 32A on the inner plate side are glass having no stepped portion 30a. It consists of a flat plate made of steel.

外板側の真空断熱材３１Ａは、例えば、飛散防止フィルム９０Ａと同一の大きさに形成されている。外板側の真空断熱材３１Ａは、外板１０Ａの後方に飛散防止フィルム９０Ａを挟んで配置されている。図６及び図７に示すように、外板側の真空断熱材３１Ａの上下方向の長さＬ１０が、内板側の真空断熱材３２Ａの上下方向の長さＬ２０よりも長さＬ３０だけ小さく形成されている（Ｌ１０＜Ｌ２０）。外板側の真空断熱材３１Ａは、正面視して、表面の左右端部にねじ止めされる補強板部材８０Ａの外側まで配置されている。このため、外板側の真空断熱材３１Ａは、正面視して一対の補強板部材８０Ａに重なって配置されている。 The vacuum heat insulating material 31A on the outer plate side is formed in the same size as the scattering prevention film 90A, for example. The vacuum insulation 31A on the outer plate side is disposed behind the outer plate 10A with the anti-scattering film 90A interposed therebetween. As shown in FIGS. 6 and 7, the vertical length L10 of the vacuum heat insulating material 31A on the outer plate side is formed by a length L30 smaller than the vertical length L20 of the vacuum heat insulating material 32A on the inner plate side. (L10 <L20). The vacuum heat insulating material 31A on the outer plate side is disposed to the outside of the reinforcing plate member 80A that is screwed to the left and right ends of the surface when viewed from the front. For this reason, the vacuum heat insulating material 31A on the outer plate side is disposed so as to overlap the pair of reinforcing plate members 80A in front view.

図７に示すように、内板側の真空断熱材３２Ａは、内板６０Ａの表面（前面）において、左右の補強板部材８０Ａの間に上下方向に延びるように配置されている。このため、外板側の真空断熱材３１Ａの左右方向の長さＬ４０は、内板側の真空断熱材３２Ａの左右方向の長さＬ５０よりも大きく形成されている（Ｌ４０＞Ｌ５０）。換言すると、内板側の真空断熱材３２Ａは、一対の補強板部材８０Ａ間に配置されると共に、上端部３２Ａａが外板側の真空断熱材３１Ａの上端部３１Ａａよりも高い位置に配置されている。 As shown in FIG. 7, the vacuum insulating material 32A on the inner plate side is disposed on the surface (front surface) of the inner plate 60A so as to extend in the vertical direction between the left and right reinforcing plate members 80A. For this reason, the length L40 in the left-right direction of the vacuum heat insulating material 31A on the outer plate side is formed larger than the length L50 in the left-right direction of the vacuum heat insulating material 32A on the inner plate side (L40> L50). In other words, the vacuum insulating material 32A on the inner plate side is disposed between the pair of reinforcing plate members 80A, and the upper end portion 32Aa is disposed at a position higher than the upper end portion 31Aa of the vacuum insulating material 31A on the outer plate side. Yes.

このため、図６に示すように、外板側の真空断熱材３１Ａの上端部３１Ａａと、枠部材２３Ａとの間には、長さＬ６０の空きスペースが形成されて、発泡断熱材５０Ａが外板１０Ａの裏面に接着される面積が広く形成されている。 For this reason, as shown in FIG. 6, an empty space of length L60 is formed between the upper end portion 31Aa of the vacuum heat insulating material 31A on the outer plate side and the frame member 23A, and the foam heat insulating material 50A is outside. The area bonded to the back surface of the plate 10A is widely formed.

なお、図６では、外板側の真空断熱材３１Ａを飛散防止フィルム９０Ａから分離して図示しているが、外板１０Ａと飛散防止フィルム９０Ａと外板側の真空断熱材３１Ａとは、互いに密着した状態に配置されている。 In FIG. 6, the vacuum insulating material 31A on the outer plate side is illustrated separately from the scattering prevention film 90A, but the outer plate 10A, the scattering prevention film 90A, and the vacuum insulating material 31A on the outer plate side are mutually connected. Arranged in close contact.

＜発泡断熱材＞
発泡断熱材５０Ａは、外板１０Ａと扉枠２０Ａとで形成された空間４０Ａに、飛散防止フィルム９０Ａ及び真空断熱材３１Ａを介在させて充填されている。発泡断熱材５０Ａは、前記回動式の断熱扉２ａ内の発泡断熱材５０（図４参照）と同様に、ウレタンフォーム等から成る。 <Foam insulation>
The foam heat insulating material 50A is filled in the space 40A formed by the outer plate 10A and the door frame 20A with the anti-scattering film 90A and the vacuum heat insulating material 31A interposed therebetween. The foam heat insulating material 50A is made of urethane foam or the like, similar to the foam heat insulating material 50 (see FIG. 4) in the rotary heat insulating door 2a.

＜内板＞
内板６０Ａは、扉枠２０Ａの裏面に設けられる断熱箱体（図示省略）の表側の壁面を形成する樹脂製板材である。 <Inner plate>
The inner plate 60A is a resin plate material that forms a front wall surface of a heat insulating box (not shown) provided on the back surface of the door frame 20A.

≪引出式の断熱扉の作用≫
次に、図５〜図７を主に参照しながら本発明の実施形態に係る冷蔵庫１の引出式の断熱扉５ａの作用を組立順に沿って説明する。 ≪Operation of drawer type heat insulation door≫
Next, the operation of the drawer-type heat insulating door 5a of the refrigerator 1 according to the embodiment of the present invention will be described in the order of assembly with reference mainly to FIGS.

引出式の断熱扉５ａを組み立てる場合は、まず、図５に示すように、枠部材２１Ａ、枠部材２２Ａ及び枠部材２３Ａのテープ貼付部２１Ａａ，２２Ａａ，２３Ａａにそれぞれ両面テープ７０Ａ（図６参照）を貼り付ける。次に、外板１０Ａの右端部を枠部材２４Ａの係合溝２４Ａａに挿入し、外板１０Ａの左右上端部を枠部材２１Ａ、枠部材２２Ａ及び枠部材２３Ａの両面テープ７０Ａ（図４参照）にそれぞれ貼り付ける。 When assembling the drawer-type heat insulating door 5a, first, as shown in FIG. 5, double-sided tape 70A (see FIG. 6) is respectively applied to the tape applying portions 21Aa, 22Aa, and 23Aa of the frame member 21A, the frame member 22A, and the frame member 23A. Paste. Next, the right end portion of the outer plate 10A is inserted into the engagement groove 24Aa of the frame member 24A, and the left and right upper end portions of the outer plate 10A are the double-sided tape 70A of the frame member 21A, the frame member 22A, and the frame member 23A (see FIG. 4). Paste each.

続いて、図６に示すように、外板１０Ａを下側に配置して、その外板１０Ａの裏面中央部に飛散防止フィルム９０Ａ及び外板側の真空断熱材３１Ａを付けて、空間４０Ａ内に発泡断熱材５０Ａの材料を充填する。次に、内板６０Ａの表面の左右に補強板部材８０Ａを配置して、補強板部材８０Ａを内板６０Ａを介在して内板６０Ａの裏面に設けられる断熱箱体（図示省略）にねじ止めする。この内板６０Ａを扉枠２０Ａの裏面側端部に取り付けて、空間４０Ａを閉塞する。このようにして断熱扉５ａは、組み立てられる。 Subsequently, as shown in FIG. 6, the outer plate 10A is arranged on the lower side, and a scattering prevention film 90A and a vacuum heat insulating material 31A on the outer plate side are attached to the center of the back surface of the outer plate 10A, and the inside of the space 40A Is filled with the material of the foam insulation 50A. Next, the reinforcing plate members 80A are arranged on the left and right sides of the surface of the inner plate 60A, and the reinforcing plate members 80A are screwed to a heat insulating box (not shown) provided on the back surface of the inner plate 60A with the inner plate 60A interposed therebetween. To do. The inner plate 60A is attached to the rear side end of the door frame 20A to close the space 40A. Thus, the heat insulation door 5a is assembled.

このようにして組み立てられた引出式の断熱扉５ａは、図６に示すように、空間４０Ａに充填された発泡断熱材５０Ａと、外板１０Ａと内板６０Ａとの間に介在された二枚の真空断熱材３１Ａ，３２Ａと、が内設されているので、断熱効果を向上させて省エネルギー化を図ることができる。 As shown in FIG. 6, the drawer-type heat insulating door 5a assembled in this way is two sheets interposed between the foam heat insulating material 50A filled in the space 40A and the outer plate 10A and the inner plate 60A. Since the vacuum heat insulating materials 31A and 32A are provided, it is possible to improve the heat insulating effect and save energy.

また、図７に示すように、外板側の真空断熱材３１Ａは、正面視して、一対の金属製の補強板部材８０Ａに重なって配置されるように幅広に形成されている。このため、貯蔵室内の冷気で冷却された補強板部材８０Ａの熱が断熱扉５ａの表面から放射されるのを、外板側の真空断熱材３１Ａによって抑制することができる。 As shown in FIG. 7, the vacuum heat insulating material 31 A on the outer plate side is formed wide so as to overlap with the pair of metal reinforcing plate members 80 A when viewed from the front. For this reason, it is possible to suppress the heat of the reinforcing plate member 80A cooled by the cool air in the storage chamber from being radiated from the surface of the heat insulating door 5a by the vacuum heat insulating material 31A on the outer plate side.

また、内板側の真空断熱材３２Ａは、外板側の真空断熱材３１Ａよりも高さＬ３０だけ高い位置まで形成されると共に、正面視して、左右の補強板部材８０Ａ間において、外板側の真空断熱材３１Ａと重ねって配置されている。このように、断熱扉５ａは、内板側の真空断熱材３２Ａと、外板側の真空断熱材３１Ａとが発泡断熱材５０Ａを介在して重なった三重構造になっていることによって、断熱効果をさらに向上させることができる。 The vacuum insulating material 32A on the inner plate side is formed up to a position higher by the height L30 than the vacuum insulating material 31A on the outer plate side, and between the left and right reinforcing plate members 80A when viewed from the front. It is arranged so as to overlap with the vacuum insulating material 31A on the side. In this way, the heat insulating door 5a has a triple insulation structure in which the vacuum heat insulating material 32A on the inner plate side and the vacuum heat insulating material 31A on the outer plate side overlap with each other through the foam heat insulating material 50A. Can be further improved.

外板側の真空断熱材３１Ａの上端部３１Ａａと、枠部材２３Ａとの間は、外板側の真空断熱材３１Ａの長さＬ１０が、内板側の真空断熱材３２Ａの長さＬ２０よりも、小さく形成されている（Ｌ１０＜Ｌ２０）。このため、外板側の真空断熱材３１Ａの上端部３１Ａａと枠部材２３Ａとの間は、長さＬ６０が比較的大きく形成されて、広い空きスペースを確保することができるので、発泡断熱材５０Ａが外板１０Ａの裏面に当接する面積が広く形成されている。 Between the upper end portion 31Aa of the vacuum heat insulating material 31A on the outer plate side and the frame member 23A, the length L10 of the vacuum heat insulating material 31A on the outer plate side is longer than the length L20 of the vacuum heat insulating material 32A on the inner plate side. Are formed small (L10 <L20). For this reason, since the length L60 is formed relatively large between the upper end portion 31Aa of the vacuum heat insulating material 31A on the outer plate side and the frame member 23A, and a wide empty space can be secured, the foam heat insulating material 50A. Has a large area in contact with the back surface of the outer plate 10A.

このように、接着剤としての機能がある発泡断熱材５０Ａは、外板側の真空断熱材３１Ａ及び飛散防止フィルム９０Ａを覆った状態で外板１０Ａに広範囲に亘って接着されるので、特別な固定具及び接着剤を使用せずに、真空断熱材３０Ａを外板１０Ａにしっかりと固定させることができる。
その結果、両面テープ７０Ａと係合溝２４Ａａ（図５参照）とで扉枠２０Ａに固定された外板１０Ａは、さらに、空間４０Ａに充填された発泡断熱材５０Ａが外板１０Ａの裏面に接着されることによって、扉枠２０Ａから離脱すること無くしっかりと固定させることができる。 As described above, the foam heat insulating material 50A having a function as an adhesive is bonded to the outer plate 10A over a wide range in a state of covering the vacuum heat insulating material 31A and the scattering prevention film 90A on the outer plate side. The vacuum heat insulating material 30A can be firmly fixed to the outer plate 10A without using a fixing tool and an adhesive.
As a result, in the outer plate 10A fixed to the door frame 20A with the double-sided tape 70A and the engagement groove 24Aa (see FIG. 5), the foam insulation 50A filled in the space 40A is further bonded to the back surface of the outer plate 10A. By doing so, it can be firmly fixed without detaching from the door frame 20A.

このため、断熱扉５ａと同じ構造の図１に示す引出式の断熱扉６ａも、同様に、外板１０Ａを扉枠２０Ａから剥離したり、離脱したりすること無くしっかりと固定させることができる。
また、真空断熱材３１Ａは、外板１０Ａに対して飛散防止フィルム９０Ａを介在して配置されていることによって、万が一、外板１０Ａが割れた際に、ガラスが飛散するのを抑制することができる。 For this reason, the drawer-type heat insulating door 6a shown in FIG. 1 having the same structure as that of the heat insulating door 5a can also be firmly fixed without peeling or detaching the outer plate 10A from the door frame 20A. .
Further, the vacuum heat insulating material 31 A is arranged with the anti-scattering film 90 A interposed with respect to the outer plate 10 A, so that it is possible to prevent the glass from scattering when the outer plate 10 A is broken. it can.

≪変形例≫
なお、本発明は、前記実施形態に限定されるものではなく、その技術的思想の範囲内で種々の改造及び変更が可能であり、本発明はこれら改造及び変更された発明にも及ぶことは勿論である。なお、前記実施形態で説明したものと同一なものは、同一符号を付してその説明は省略する。 ≪Modification≫
The present invention is not limited to the above-described embodiment, and various modifications and changes can be made within the scope of the technical idea. The present invention extends to these modifications and changes. Of course. In addition, the same thing as what was demonstrated in the said embodiment attaches | subjects the same code | symbol, and abbreviate | omits the description.

図８（ａ）は、断熱扉の変形例を示す横断面図である。
前記実施形態で説明した図４に示す断熱扉２ａの真空断熱材３０は、その一例として段差部３０ａを形成して、真空断熱材３０と外板１０との間に発泡断熱材５０が入り込むことが可能な隙間Ｓを設けた場合を説明したが、これに限定されるものではない。
図８（ａ）に示すように、真空断熱材３０Ｂは、外板１０Ｂとの間に隙間ＳＢを形成するために、端部３０Ｂｂを内板６０Ｂ側に曲げて形成してもよい。このように形成すれば、発泡断熱材５０Ｂが、隙間ＳＢ内に入り込んで、外板１０Ｂに接着されるため、外板１０Ｂをしっかりと断熱扉に保持させることができる。 Fig.8 (a) is a cross-sectional view which shows the modification of a heat insulation door.
The vacuum heat insulating material 30 of the heat insulating door 2a illustrated in FIG. 4 described in the above embodiment forms a stepped portion 30a as an example, and the foam heat insulating material 50 enters between the vacuum heat insulating material 30 and the outer plate 10. However, the present invention is not limited to this.
As shown in FIG. 8A, the vacuum heat insulating material 30B may be formed by bending the end 30Bb toward the inner plate 60B in order to form a gap SB with the outer plate 10B. If formed in this way, the foam heat insulating material 50B enters the gap SB and is adhered to the outer plate 10B, so that the outer plate 10B can be firmly held by the heat insulating door.

図８（ｂ）は、断熱扉の他の変形例を示す横断面図である。
また、図８（ｂ）に示すように、真空断熱材３０Ｃは、両側の端部３０Ｃｂを内板６０Ｃ側に曲げて形成し、外板１０Ｃとの間の両側に隙間ＳＣがあるように形成してもよい。このようにしても、発泡断熱材５０Ｃが、隙間ＳＣ内に入り込んで外板１０Ｃに接着されるため、外板１０Ｃをしっかりと断熱扉に保持させることができる。 FIG.8 (b) is a cross-sectional view which shows the other modification of a heat insulation door.
Further, as shown in FIG. 8B, the vacuum heat insulating material 30C is formed by bending the end portions 30Cb on both sides to the inner plate 60C side so that there are gaps SC on both sides with the outer plate 10C. May be. Even if it does in this way, since the foaming heat insulating material 50C enters the gap SC and is bonded to the outer plate 10C, the outer plate 10C can be firmly held by the heat insulating door.

図８（ｃ）は、断熱扉の他の変形例を示す横断面図である。
また、図８（ｃ）に示すように、真空断熱材３０Ｄは、端部３０Ｄｂよりも中央部３０Ｄｃ側に寄った位置に、外板１０Ｄとの間に隙間ＳＤが形成するために、内板６０Ｄ側に山状に曲げて形成した折曲部３０Ｄｄを形成してもよい。このようにしても、発泡断熱材５０Ｄが、隙間ＳＣ内に入り込んで外板１０Ｄに接着されるため、外板１０Ｃをしっかりと断熱扉に保持させることができる。 FIG.8 (c) is a cross-sectional view which shows the other modification of a heat insulation door.
Further, as shown in FIG. 8C, the vacuum heat insulating material 30D has a gap SD between the outer plate 10D and the inner plate at a position closer to the central portion 30Dc than the end 30Db. You may form the bending part 30Dd bent and formed in the mountain shape on the 60D side. Even if it does in this way, since the foaming heat insulating material 50D enters the gap SC and is bonded to the outer plate 10D, the outer plate 10C can be firmly held by the heat insulating door.

≪その他の変形例≫
また、実施形態及び変形例では、冷蔵庫１における断熱扉２ａ，３ａ，４ａ，５ａ，６ａを例に挙げて説明したが、冷蔵庫１以外に、自動販売機、保冷宅配輸送箱、釣り具クーラー、食品配送箱、検体輸送用保冷ボックス、特殊冷蔵・冷凍庫、特殊冷凍車、冷凍コンテナ、ショーケース等の種々な用途に用いられる扉や、壁材として使用することも可能である。 ≪Other variations≫
Moreover, in embodiment and the modification, although demonstrated taking the heat insulation door 2a, 3a, 4a, 5a, 6a in the refrigerator 1 as an example, in addition to the refrigerator 1, a vending machine, a cold storage delivery box, a fishing gear cooler, It can also be used as doors and wall materials used in various applications such as food delivery boxes, specimen storage cold boxes, special refrigeration / freezers, special freezer cars, refrigerated containers, and showcases.

また、外板１０，１０Ａは、裏面に塗料を塗布したり、印刷したりして、単色調や模様を配しても構わない。 Further, the outer plates 10 and 10A may be provided with a single color tone or a pattern by applying a paint or printing on the back surface.

１冷蔵庫
２ａ，３ａ，４ａ，５ａ，６ａ断熱扉
１０，１０Ａ，１０Ｂ，１０Ｃ，１０Ｄ外板
２０，２０Ａ扉枠
３０，３０Ａ，３０Ｂ，３０Ｃ，３０Ｄ真空断熱材
３０ａ段差部
３０Ａｂ，３０Ｂｂ，３０Ｃｂ，３０Ｄｂ端部
３０Ｄｃ中央部
３１Ａ外板側の真空断熱材
３１Ａａ，３２Ａａ上端部
３２Ａ内板側の真空断熱材
４０，４０Ａ空間
５０，５０Ａ，５０Ｂ，５０Ｃ，５０Ｄ発泡断熱材
６０，６０Ａ，６０Ｂ，６０Ｃ，６０Ｄ内板
８０Ａ補強板部材
９０Ａ飛散防止フィルム
Ｌ１真空断熱材の内板側の長さ
Ｌ２真空断熱材の外板側の長さ
Ｌ１０外板側の真空断熱材の長さ
Ｌ２０内板側の真空断熱材の長さ
ＳＡ，ＳＢ，ＳＣ，ＳＤ隙間 DESCRIPTION OF SYMBOLS 1 Refrigerator 2a, 3a, 4a, 5a, 6a Thermal insulation door 10, 10A, 10B, 10C, 10D Outer plate 20, 20A Door frame 30, 30A, 30B, 30C, 30D Vacuum heat insulating material 30a Step part 30Ab, 30Bb, 30Cb, 30Db End portion 30Dc Center portion 31A Vacuum insulation material on the outer plate side 31Aa, 32Aa Upper end portion 32A Vacuum insulation material on the inner plate side 40, 40A Space 50, 50A, 50B, 50C, 50D Foam insulation material 60, 60A, 60B, 60C , 60D Inner plate 80A Reinforcing plate member 90A Anti-scattering film L1 Length on the inner plate side of the vacuum heat insulating material L2 Length on the outer plate side of the vacuum heat insulating material L10 Length of the vacuum heat insulating material on the outer plate side L20 On the inner plate side Vacuum insulation length SA, SB, SC, SD Clearance

Claims

A glass outer plate provided on the surface of the heat insulating door;
A door frame provided at the periphery of the outer plate;
A vacuum heat insulating material disposed on the back surface of the outer plate;
A foam heat insulating material filled with the vacuum heat insulating material interposed in a space formed by the outer plate and the door frame;
A refrigerator provided with an inner plate provided on the door frame,
The vacuum heat insulating material is formed such that the length of the vacuum heat insulating material on the outer plate side is smaller than the length of the vacuum heat insulating material on the inner plate side ,
In the space, an anti-scattering film made of a resinous thin film-like member disposed in close contact with the back surface of the outer plate,
A vacuum heat insulating material on the outer plate disposed in close contact with the back surface of the anti-scattering film; and
A vacuum heat insulating material on the inner plate provided on the surface of the inner plate;
A foam insulation having a function as an adhesive filled in the space;
Is installed,
The heat insulating door comprises a pull-out type door provided with a pair of left and right metal reinforcing plate members screwed to a heat insulating box provided on the back surface of the inner plate with the inner plate interposed therebetween,
Covering the entire surface of the pair of left and right reinforcing plate members from the outside, and the vacuum insulating material on the outer plate side disposed to overlap the pair of left and right reinforcing plate members in front view,
A vacuum heat insulating material on the inner plate disposed between the pair of left and right reinforcing plate members;
The foam insulation,
Refrigerator characterized by having a triple structure with the intervening layers .

The refrigerator according to claim 1, wherein the vacuum heat insulating material has a stepped portion formed on a surface on the outer plate side.

Before SL in a plate side of the vacuum heat insulating material, a refrigerator according to claim 2, characterized in that the upper end portion is disposed at a position higher than the upper end of the vacuum heat insulating material of the outer plate side.

4. The vacuum heat insulating material according to any one of claims 1 to 3 , wherein an end portion or a center portion of the vacuum heat insulating material is bent toward the inner plate, and a gap is formed between the vacuum heat insulating material and the outer plate. The refrigerator of Claim 1.