JP2023068555A - refrigerator - Google Patents

Abstract

To provide a refrigerator which enables improvement of rigidity of a housing while inhibiting deterioration of heat insulation effect.SOLUTION: A refrigerator includes: a housing having an outer box and an inner box; a first heat insulation material filling an internal space between the outer box and the inner box; and a second heat insulation material provided between the outer box and the inner box on a rear wall of the housing and has heat insulation performance higher than that of the first heat insulation material. A first end as seen in a width direction of the second heat insulation material is located at the inner side as seen in the width direction relative to a second end as seen in the width direction of an inner box recessed part recessed rearward on a back surface of the inner box. First ends located at both sides as seen in the width direction of the second heat insulation material are located at the inner side as seen in the width direction relative to second ends at both sides of the inner box recessed part.SELECTED DRAWING: Figure 4

Description

本発明の実施形態は、冷蔵庫に関する。 Embodiments of the present invention relate to refrigerators.

冷蔵庫本体を構成する外箱と内箱との間に発泡断熱材を有した冷蔵庫が知られている。このような冷蔵庫においては、より断熱効果を高めるために、冷蔵庫本体の後壁において内箱と外箱との間に設けられる後方真空断熱材の幅方向の長さを最大限にとれるように、後壁において内箱に形成される内箱凹部の幅方向の長さより大きく、さらに冷蔵庫内の流路形成部材の幅方向の長さよりも大きく設定され、後方真空断熱材の幅方向の端部が外箱に形成される発泡断熱材（ウレタン）の注入口まで延びる大きさに設けられている。
しかしながら、後方真空断熱材の横幅寸法を大きくすることにより、発泡断熱材のウレタン量が少なくなり、筐体の剛性が低下するおそれがあった。 Refrigerators are known that have a foam insulating material between an outer case and an inner case that constitute a refrigerator body. In such a refrigerator, in order to further enhance the heat insulating effect, the width direction length of the rear vacuum heat insulating material provided between the inner box and the outer box on the rear wall of the refrigerator body can be maximized. The length in the width direction of the inner box recess formed in the inner box on the rear wall is set to be larger than the length in the width direction of the recessed portion of the inner box, and the length in the width direction of the flow path forming member in the refrigerator is set to be larger than the length in the width direction of the passage forming member in the refrigerator. It is provided in a size that extends to an injection port of foamed heat insulating material (urethane) formed in the outer box.
However, by increasing the width of the rear vacuum heat insulating material, the amount of urethane in the foam heat insulating material is reduced, which may reduce the rigidity of the housing.

特開２０１６－５３４７２号公報JP 2016-53472 A

本発明が解決しようとする課題は、断熱効果の低下を抑えつつ筐体の剛性を高めることができる冷蔵庫を提供することである。 The problem to be solved by the present invention is to provide a refrigerator that can increase the rigidity of the housing while suppressing deterioration of the heat insulating effect.

実施形態の冷蔵庫は、外箱と内箱とを有する筐体と、前記外箱と前記内箱との間の内部空間に充填された第１断熱材と、前記筐体の後壁の前記外箱と前記内箱との間に設けられ、前記第１断熱材よりも断熱性能が高い第２断熱材と、を備え、前記第２断熱材の幅方向の第１端部は、前記内箱の背面に後方に向けて凹む内箱凹部の幅方向の第２端部よりも前記幅方向の内側に位置する。 A refrigerator according to an embodiment includes a housing having an outer box and an inner box, a first heat insulating material filled in an internal space between the outer box and the inner box, and the outer wall of the rear wall of the housing. a second heat insulating material provided between the box and the inner box and having higher heat insulating performance than the first heat insulating material, wherein a first end in the width direction of the second heat insulating material It is positioned inside in the width direction from the second end in the width direction of the inner box recess recessed rearward in the back surface of the housing.

第１実施形態の冷蔵庫の正面図。The front view of the refrigerator of 1st Embodiment. 図１に示された冷蔵庫のＦ２－Ｆ２線に沿う断面図。FIG. 2 is a cross-sectional view of the refrigerator shown in FIG. 1 taken along line F2-F2; 図２に示されたＦ１－Ｆ１線に沿う矢視図。FIG. 3 is a view along the F1-F1 line shown in FIG. 2; 図２に示された冷蔵庫のＦ３－Ｆ３線に沿う部位の水平断面図。FIG. 3 is a horizontal cross-sectional view of the portion of the refrigerator shown in FIG. 2 taken along line F3-F3; 図４に示すＦ４部の拡大図。FIG. 5 is an enlarged view of an F4 portion shown in FIG. 4; 第２実施形態の冷蔵庫の水平断面図であって、図４に対応する図。Fig. 5 is a horizontal sectional view of the refrigerator of the second embodiment, corresponding to Fig. 4; 図６に示すＦ５部の拡大図。FIG. 7 is an enlarged view of the F5 portion shown in FIG. 6; 第３実施形態の真空断熱材と流路形成部材との端部部分の拡大図。The enlarged view of the end part of the vacuum heat insulating material and the flow-path formation member of 3rd Embodiment. 第４実施形態の冷蔵庫の水平断面図であって、図４に対応する図。FIG. 5 is a horizontal cross-sectional view of a refrigerator according to a fourth embodiment, corresponding to FIG. 4;

以下、実施形態の冷蔵庫を、図面を参照して説明する。以下の説明では、同一または類似の機能を有する構成に同一の符号を付す。そして、それら構成の重複する説明は省略する場合がある。 Hereinafter, refrigerators according to embodiments will be described with reference to the drawings. In the following description, the same reference numerals are given to components having the same or similar functions. Duplicate descriptions of these configurations may be omitted.

本明細書では、冷蔵庫の正面に立つユーザから冷蔵庫を見た方向を基準に、左右を定義している。また、冷蔵庫から見て冷蔵庫の正面に立つユーザに近い側を「前」、遠い側を「後ろ」と定義している。本明細書において「幅方向」とは、上記定義における左右方向を意味する。本明細書において「奥行方向」とは、上記定義における前後方向を意味する。本明細書において「幅方向」とは、上記定義における左右方向を意味する。本明細書において「奥行方向」とは、上記定義における前後方向を意味する。「上下方向」とは、冷蔵庫の高さ方向を意味する。 In this specification, left and right are defined with reference to the direction of viewing the refrigerator from a user standing in front of the refrigerator. In addition, the side closer to the user standing in front of the refrigerator as viewed from the refrigerator is defined as "front", and the side farther from the refrigerator is defined as "back". As used herein, the term "width direction" means the left-right direction as defined above. As used herein, the term "depth direction" means the front-back direction in the above definition. As used herein, the term "width direction" means the left-right direction as defined above. As used herein, the term "depth direction" means the front-back direction in the above definition. "Vertical direction" means the height direction of the refrigerator.

（第１実施形態）
［冷蔵庫の全体構成］
図１から図５を参照し、実施形態の冷蔵庫１について説明する。まず、冷蔵庫１の全体構成について説明する。ただし、冷蔵庫１は、以下に説明する構成の全てを有する必要はなく、いくつかの構成が適宜省略されてもよい。 (First embodiment)
[Overall configuration of refrigerator]
A refrigerator 1 according to an embodiment will be described with reference to FIGS. 1 to 5 . First, the overall configuration of the refrigerator 1 will be described. However, the refrigerator 1 does not need to have all of the configurations described below, and some configurations may be omitted as appropriate.

図１は、冷蔵庫１を示す正面図である。図２は、図１中に示された冷蔵庫１のＦ２－Ｆ２線に沿う断面図である。図３は、図２に示されたＦ１－Ｆ１線に沿う矢視図である。図４は、図２に示された冷蔵庫のＦ３－Ｆ３線に沿う部位の水平断面図である。図５は、図４に示すＦ４部の拡大図である。 FIG. 1 is a front view showing a refrigerator 1. FIG. FIG. 2 is a cross-sectional view of the refrigerator 1 shown in FIG. 1 along line F2-F2. 3 is a view taken along line F1-F1 shown in FIG. 2. FIG. FIG. 4 is a horizontal cross-sectional view of the portion of the refrigerator shown in FIG. 2 taken along line F3-F3. 5 is an enlarged view of the F4 portion shown in FIG. 4. FIG.

図１に示すように、冷蔵庫１は、例えば、冷蔵庫本体５および複数の扉１１を有する。冷蔵庫本体５は筐体１０を含む。図２に示すように、筐体１０は、例えば、内箱１０ａ、外箱１０ｂ、及び断熱部５３を含む。 As shown in FIG. 1, the refrigerator 1 has, for example, a refrigerator body 5 and multiple doors 11 . Refrigerator body 5 includes housing 10 . As shown in FIG. 2, the housing 10 includes an inner box 10a, an outer box 10b, and a heat insulating portion 53, for example.

図２に示すように、内箱１０ａは、筐体１０の内面を形成する部材であり、例えば合成樹脂製である。外箱１０ｂは、筐体１０の外面を形成する部材であり、例えば金属製である。外箱１０ｂは、内箱１０ａよりも一回り大きく形成されており、内箱１０ａの外側に配置されている。外箱１０ｂは、筐体１０の前面を除く外壁面を形成する略直方体である。ただし、外箱１０ｂの下端部の後側には、機械室２６を配置するための凹部が形成されている。 As shown in FIG. 2, the inner box 10a is a member that forms the inner surface of the housing 10, and is made of synthetic resin, for example. The outer box 10b is a member that forms the outer surface of the housing 10, and is made of metal, for example. The outer box 10b is formed one size larger than the inner box 10a, and is arranged outside the inner box 10a. The outer box 10b is a substantially rectangular parallelepiped that forms the outer wall surface of the housing 10 excluding the front surface. However, a recess for arranging the machine room 26 is formed on the rear side of the lower end portion of the outer casing 10b.

断熱部５３は、内箱１０ａと外箱１０ｂとの間に設けられ、筐体１０の断熱性を高めている。断熱部５３は、例えば、発泡断熱材１０ｃ（第１断熱材）と、複数の真空断熱材３０（第２断熱材）と、複数の薄型断熱材４０とを含む。 The heat insulating part 53 is provided between the inner box 10 a and the outer box 10 b to improve the heat insulating properties of the housing 10 . The heat insulating part 53 includes, for example, a foam heat insulating material 10 c (first heat insulating material), a plurality of vacuum heat insulating materials 30 (second heat insulating material), and a plurality of thin heat insulating materials 40 .

発泡断熱材１０ｃは、例えば、発泡ウレタンのような発泡状の断熱材であり、内箱１０ａと外箱１０ｂとの間に形成される内部空間内に充填されている。具体的に、発泡断熱材１０ｃは、流動性を有する液体の状態で、内箱１０ａと外箱１０ｂとの間に形成される空間内に注入され、その後発泡することで形成される。 The foamed heat insulating material 10c is, for example, a foamed heat insulating material such as urethane foam, and is filled in the internal space formed between the inner box 10a and the outer box 10b. Specifically, the foamed heat insulating material 10c is formed in a fluid state by being injected into the space formed between the inner box 10a and the outer box 10b and then foamed.

真空断熱材３０（ＶＩＰ：Vacuum Insulation Panel）は、発泡断熱材１０ｃよりも断熱度が高い。複数の真空断熱材３０は、例えば、内部に隙間を有する芯材と、芯材を大気圧に比べて減圧状態で密閉して収容する袋を形成する外包材と、をそれぞれ有する。芯材は、例えば、グラスウールのような繊維素材、または発泡体のような多孔質体である。このような複数の真空断熱材３０は、内箱１０ａと外箱１０ｂとの間に形成される内部空間内に配置されている。 The vacuum heat insulating material 30 (VIP: Vacuum Insulation Panel) has a higher degree of heat insulation than the foam heat insulating material 10c. Each of the plurality of vacuum insulation materials 30 has, for example, a core material having a gap inside, and an outer wrapping material forming a bag that seals and houses the core material in a reduced pressure state compared to the atmospheric pressure. The core material is, for example, a fibrous material such as glass wool, or a porous material such as foam. Such a plurality of vacuum heat insulating materials 30 are arranged in the internal space formed between the inner box 10a and the outer box 10b.

複数の薄型断熱材４０は、例えば、エアロゲル、キセロゲル、またはクライオゲルを含み、柔軟性（可撓性）を有するシート状にそれぞれ形成されている。各薄型断熱材４０は、内箱１０ａ及び外箱１０ｂの内面形状に沿って変形され、当該内箱１０ａ及び外箱１０ｂの内面に沿ってそれぞれ貼り付けられている。 The plurality of thin heat insulating materials 40 include, for example, aerogel, xerogel, or cryogel, and are each formed in a sheet shape having softness (flexibility). Each thin heat insulating material 40 is deformed along the inner surface shape of the inner box 10a and the outer box 10b, and is attached along the inner surface of the inner box 10a and the outer box 10b.

図１に示すように、筐体１０は、上壁２１、下壁２２、左側壁２３、右側壁２４、および後壁２５（図２参照）を有する。左側壁２３、右側壁２４、および後壁２５は鉛直に広がっている。後壁２５は、左側壁２３および右側壁２４の後端どうしを接続している。左側壁２３および右側壁２４は、下壁２２の左右の端部から上方に起立し、上壁２１の左右の端部に繋がる。上壁２１および下壁２２は、上下方向で互いに対向し、略水平に広がっている。図２に示すように、後壁２５は、下壁２２の後端部から上方に起立し、上壁２１の後端部に繋がる。 As shown in FIG. 1, the housing 10 has a top wall 21, a bottom wall 22, a left side wall 23, a right side wall 24, and a rear wall 25 (see FIG. 2). Left sidewall 23, right sidewall 24, and rear wall 25 extend vertically. The rear wall 25 connects the rear ends of the left side wall 23 and the right side wall 24 . The left side wall 23 and the right side wall 24 rise upward from the left and right ends of the lower wall 22 and are connected to the left and right ends of the upper wall 21 . The upper wall 21 and the lower wall 22 face each other in the vertical direction and extend substantially horizontally. As shown in FIG. 2 , the rear wall 25 rises upward from the rear end of the lower wall 22 and connects to the rear end of the upper wall 21 .

図２に示すように、筐体１０の内部には、複数の貯蔵室２７が形成されている。複数の貯蔵室２７は、例えば、冷蔵室２７Ａ、野菜室２７Ｂ、製氷室２７Ｃ（図１参照）、小冷凍室２７Ｄ、および主冷凍室２７Ｅを含む。本実施形態では、最上部に冷蔵室２７Ａが配置され、冷蔵室２７Ａの下方に野菜室２７Ｂが配置され、野菜室２７Ｂの下方に製氷室２７Ｃおよび小冷凍室２７Ｄが配置され、製氷室２７Ｃおよび小冷凍室２７Ｄの下方に主冷凍室２７Ｅが配置されている。 As shown in FIG. 2, a plurality of storage chambers 27 are formed inside the housing 10 . The multiple storage compartments 27 include, for example, a refrigerator compartment 27A, a vegetable compartment 27B, an ice making compartment 27C (see FIG. 1), a small freezer compartment 27D, and a main freezer compartment 27E. In this embodiment, the refrigerator compartment 27A is arranged at the top, the vegetable compartment 27B is arranged below the refrigerator compartment 27A, the ice making compartment 27C and the small freezer compartment 27D are arranged below the vegetable compartment 27B, and the ice making compartment 27C and the small freezer compartment 27D are arranged below the vegetable compartment 27B. A main freezer compartment 27E is arranged below the small freezer compartment 27D.

ただし、複数の貯蔵室２７の配置は、上記例に限定されず、例えば野菜室２７Ｂと主冷凍室２７Ｅの配置が逆でもよい。筐体１０は、各貯蔵室２７の前面側に、各貯蔵室２７に対して食材の出し入れを可能にする開口を有する。 However, the arrangement of the plurality of storage compartments 27 is not limited to the above example, and for example, the arrangement of the vegetable compartment 27B and the main freezer compartment 27E may be reversed. The housing 10 has an opening on the front side of each storage chamber 27 that allows food to be taken in and out of each storage chamber 27 .

図２に示すように、筐体１０は、第１仕切部２８と、第２仕切部２９と、を有する。第１仕切部２８および第２仕切部２９は、例えば、それぞれ略水平方向に沿う仕切壁である。第１仕切部２８は、冷蔵室２７Ａと野菜室２７Ｂとの間に位置し、冷蔵室２７Ａと野菜室２７Ｂとの間を仕切っている。第１仕切部２８は、冷蔵室２７Ａの底壁を形成するとともに、野菜室２７Ｂの天井壁を形成している。 As shown in FIG. 2 , the housing 10 has a first partition 28 and a second partition 29 . The first partition portion 28 and the second partition portion 29 are, for example, partition walls extending substantially horizontally. The first partition 28 is located between the refrigerator compartment 27A and the vegetable compartment 27B, and partitions the refrigerator compartment 27A and the vegetable compartment 27B. The first partition 28 forms the bottom wall of the refrigerator compartment 27A and the ceiling wall of the vegetable compartment 27B.

第２仕切部２９は、野菜室２７Ｂと、製氷室２７Ｃ（図１参照）および小冷凍室２７Ｄとの間に位置し、野菜室２７Ｂと、製氷室２７Ｃ（図１参照）および小冷凍室２７Ｄとの間を仕切っている。第２仕切部２９は、野菜室２７Ｂの底壁を形成するとともに、製氷室２７Ｃ（図１参照）および小冷凍室２７Ｄの天井壁を形成している。 The second partition 29 is located between the vegetable compartment 27B, the ice making compartment 27C (see FIG. 1) and the small freezing compartment 27D, and is located between the vegetable compartment 27B, the ice making compartment 27C (see FIG. 1) and the small freezing compartment 27D. partitioning between The second partition 29 forms the bottom wall of the vegetable compartment 27B and the ceiling walls of the ice making compartment 27C (see FIG. 1) and the small freezer compartment 27D.

複数の貯蔵室２７の開口は、複数の扉１１によって開閉可能に覆われている。図１に示すように、複数の扉１１は、例えば、左冷蔵室扉１１Ａａ、右冷蔵室扉１１Ａｂ、野菜室扉１１Ｂ、製氷室扉１１Ｃ、小冷凍室扉１１Ｄ、および主冷凍室扉１１Ｅを含む。
左冷蔵室扉１１Ａａおよび右冷蔵室扉１１Ａｂは、冷蔵室２７Ａの開口を閉じる。野菜室扉１１Ｂは、野菜室２７Ｂの開口を閉じる。製氷室扉１１Ｃは、製氷室２７Ｃの開口を閉じる。小冷凍室扉１１Ｄは、小冷凍室２７Ｄの開口を閉じる。主冷凍室扉１１Ｅは、主冷凍室２７Ｅの開口を閉じる。
左右に隣り合って設けられた左冷蔵室扉１１Ａａおよび右冷蔵室扉１１Ａｂは、観音開き式の一対の扉である。
野菜室扉１１Ｂ、製氷室扉１１Ｃ（図１参照）、小冷凍室扉１１Ｄ、および主冷凍室扉１１Ｅは、例えば、引き出し式の扉である。 Openings of the plurality of storage chambers 27 are covered with a plurality of doors 11 so as to be openable and closable. As shown in FIG. 1, the plurality of doors 11 include, for example, a left refrigerating compartment door 11Aa, a right refrigerating compartment door 11Ab, a vegetable compartment door 11B, an ice making compartment door 11C, a small freezer compartment door 11D, and a main freezer compartment door 11E. include.
The left refrigerating compartment door 11Aa and the right refrigerating compartment door 11Ab close the opening of the refrigerating compartment 27A. The vegetable compartment door 11B closes the opening of the vegetable compartment 27B. The ice making chamber door 11C closes the opening of the ice making chamber 27C. The small freezer compartment door 11D closes the opening of the small freezer compartment 27D. The main freezer compartment door 11E closes the opening of the main freezer compartment 27E.
A left refrigerating compartment door 11Aa and a right refrigerating compartment door 11Ab, which are provided adjacent to each other on the left and right, are a pair of double doors.
The vegetable compartment door 11B, the ice making compartment door 11C (see FIG. 1), the small freezer compartment door 11D, and the main freezer compartment door 11E are, for example, drawer doors.

複数の扉１１は、それぞれの内部に適宜の断熱材を含む。適宜の断熱材には、上述した発泡断熱材１０ｃ、薄型断熱材４０、および真空断熱材３０の少なくとも１つが含まれてもよい。例えば、真空断熱材３０が含まれる場合、各扉１１の正面視および厚さ方向における真空断熱材３０の配置位置は特に限定されない。 The plurality of doors 11 contain appropriate heat insulating material inside each. Suitable insulation may include at least one of the foam insulation 10c, thin insulation 40, and vacuum insulation 30 described above. For example, when the vacuum heat insulating material 30 is included, the arrangement position of the vacuum heat insulating material 30 in the front view and the thickness direction of each door 11 is not particularly limited.

筐体１０の後側（後壁２５）には、筐体１０とともに冷蔵庫本体５を形成する種々の部材が配置されている。冷蔵庫本体５を形成する部材としては、例えば、冷媒が循環するパイプ、流路形成部材１４、冷却ユニット１５、冷却ファン１６、および制御基板１７などが挙げられる。
冷蔵庫本体５において、筐体１０の後側の下部には、例えば、圧縮機、凝縮器、蒸発皿などが配置された機械室２６が設けられている。 Various members forming the refrigerator main body 5 together with the housing 10 are arranged on the rear side (rear wall 25 ) of the housing 10 . The members forming the refrigerator body 5 include, for example, a pipe through which the refrigerant circulates, the flow path forming member 14, the cooling unit 15, the cooling fan 16, the control board 17, and the like.
In the refrigerator main body 5 , a machine room 26 in which, for example, a compressor, a condenser, an evaporating dish, etc. are arranged is provided in the lower rear portion of the housing 10 .

冷却ユニット１５Ａは、冷蔵室２７Ａの後側に配置されており、冷蔵室２７Ａおよび野菜室２７Ｂを冷却する。
冷却ユニット１５Ｂは、主冷凍室２７Ｅの後側に配置されており、製氷室２７Ｃ、小冷凍室２７Ｄ、および主冷凍室２７Ｅを冷却する。
流路形成部材１４Ａは、冷却ユニット１５Ａから供給される冷気をそれぞれ冷蔵室２７Ａ、野菜室２７Ｂに流す流路を形成する。
流路形成部材１４Ｂは、冷却ユニット１５Ｂから供給される冷気を製氷室２７Ｃ、小冷凍室２７Ｄ、および主冷凍室２７Ｅに流す流路を形成する。 The cooling unit 15A is arranged behind the refrigerator compartment 27A and cools the refrigerator compartment 27A and the vegetable compartment 27B.
The cooling unit 15B is arranged behind the main freezer compartment 27E, and cools the ice making compartment 27C, the small freezer compartment 27D, and the main freezer compartment 27E.
14 A of flow-path formation members form the flow path which each flows the cold air supplied from 15 A of cooling units to 27 A of refrigerator compartments, and 27 B of vegetable compartments.
The flow path forming member 14B forms flow paths through which cold air supplied from the cooling unit 15B flows to the ice making compartment 27C, the small freezer compartment 27D, and the main freezer compartment 27E.

冷却ファン１６Ａは、冷却ユニット１５Ａで形成された冷気を流路形成部材１４Ａで囲まれた流路に送風し、野菜室２７Ｂおよび冷蔵室２７Ａの内部に循環する冷気の流れを形成する。冷却ファン１６Ｂは、冷却ユニット１５Ｂで形成された冷気が流路形成部材１４Ｂで囲まれた流路を送風し、製氷室２７Ｃ、小冷凍室２７Ｄ、および主冷凍室２７Ｅの内部に循環する冷気の流れを形成する。 The cooling fan 16A blows the cool air generated by the cooling unit 15A into the flow path surrounded by the flow path forming member 14A, forming a flow of cool air that circulates inside the vegetable compartment 27B and the refrigerator compartment 27A. The cooling fan 16B blows the cold air formed by the cooling unit 15B through the flow path surrounded by the flow path forming member 14B, and cools the cold air circulating inside the ice making compartment 27C, the small freezer compartment 27D, and the main freezer compartment 27E. form a flow.

制御基板１７は、冷蔵庫１の全体を統括的に制御する。例えば、制御基板１７は、複数の貯蔵室２７に設けられた温度センサ１１０（図３参照）の検出結果に基づき、冷却ユニット１５Ａ、１５Ｂ、冷却ファン１６Ａ、１６Ｂ、および圧縮機等の動作を制御する。制御基板１７は、湿気を避けることができる場所に配置することが好ましい。本実施形態では、冷蔵室２７Ａの上方における後側の外箱１０ｂ上に配置されている。 The control board 17 controls the refrigerator 1 as a whole. For example, the control board 17 controls the operation of the cooling units 15A and 15B, the cooling fans 16A and 16B, the compressor, etc. based on the detection results of the temperature sensors 110 (see FIG. 3) provided in the plurality of storage chambers 27. do. The control board 17 is preferably arranged in a place where moisture can be avoided. In this embodiment, it is arranged on the rear outer casing 10b above the refrigerator compartment 27A.

［筐体１０の左右の側壁の断熱構造］
次に、冷蔵庫１の左右の側壁２３、２４および後壁２５の断熱構造について説明する。なお、冷蔵庫１の上壁２１および下壁２２の断熱構造については、以下で説明する側壁２３、２４とほぼ同様の構成であるので、ここでは詳しい説明は省略する。 [Heat insulation structure of left and right side walls of housing 10]
Next, the heat insulating structure of the left and right side walls 23 and 24 and the rear wall 25 of the refrigerator 1 will be described. Note that the heat insulation structure of the upper wall 21 and the lower wall 22 of the refrigerator 1 is substantially the same as that of the side walls 23 and 24 described below, so detailed description thereof will be omitted here.

図４に示すように、筐体１０の左側壁２３および右側壁２４は、内箱１０ａの内壁面２３ａ，２４ａと、外箱１０ｂの内壁面２３ｂ，２４ｂと、を含んでいる。内箱１０ａの内壁面２３ａ，２４ａは、先端側へ向かうにしたがって幅方向で互いに離れる方向へ傾斜している。このため、内箱１０ａの内側に形成される貯蔵室２７の左右方向の幅は、奥側よりも開口側の方が僅かに広くなっている。 As shown in FIG. 4, the left side wall 23 and the right side wall 24 of the housing 10 include inner wall surfaces 23a and 24a of the inner box 10a and inner wall surfaces 23b and 24b of the outer box 10b. The inner wall surfaces 23a and 24a of the inner box 10a are inclined in the width direction away from each other toward the tip side. Therefore, the lateral width of the storage chamber 27 formed inside the inner box 10a is slightly wider on the opening side than on the inner side.

左側壁２３および右側壁２４は、互いに同様の断熱構造を有する。図４に示すように、筐体１０の左側壁２３を構成する内箱１０ａおよび外箱１０ｂとの間には、真空断熱材３０（が、上下方向に３枚並べて配置されている。これら真空断熱材３０は、左側壁２３の内壁面２３ｂの略全体を覆っている。真空断熱材３０の外形、個数は、左側壁２３の内壁面２３ｂの略全体を略覆うことができる外形、個数であれば、特に限定されない。 The left side wall 23 and the right side wall 24 have heat insulating structures similar to each other. As shown in FIG. 4, between the inner box 10a and the outer box 10b forming the left side wall 23 of the housing 10, three vacuum heat insulating materials 30 are arranged vertically. The heat insulating material 30 covers substantially the entire inner wall surface 23b of the left side wall 23. The outer shape and the number of the vacuum heat insulating materials 30 are such that they can cover substantially the entire inner wall surface 23b of the left side wall 23. If there is, it is not particularly limited.

真空断熱材３０は、冷蔵庫１の右側から見た側面視の形状が矩形である。真空断熱材３０は、外形線が奥行方向および上下方向に延びる姿勢で、左側壁２３における左側の内壁面２３ｂ上に固定されている。真空断熱材３０における奥行方向の長さは、内壁面２３ｂの奥行方向の長さよりも少し短い。真空断熱材３０は、上下方向に隣接して２枚配置されている。 The vacuum heat insulating material 30 has a rectangular shape when viewed from the right side of the refrigerator 1 . The vacuum heat insulating material 30 is fixed on the left inner wall surface 23b of the left wall 23 in such a posture that the outline extends in the depth direction and the vertical direction. The length of the vacuum heat insulating material 30 in the depth direction is slightly shorter than the length of the inner wall surface 23b in the depth direction. Two sheets of the vacuum heat insulating material 30 are arranged adjacent to each other in the vertical direction.

左側壁２３及び右側壁２４において、内箱１０ａと外箱１０ｂとの間で真空断熱材３０を除く各内部空間Ｋには、発泡断熱材１０ｃがそれぞれ略隙間なく充填されている。これにより、左側壁２３および右側壁２４は断熱性を有する。 In the left side wall 23 and the right side wall 24, each internal space K between the inner box 10a and the outer box 10b, excluding the vacuum heat insulating material 30, is filled with the foam heat insulating material 10c substantially without gaps. Thereby, the left side wall 23 and the right side wall 24 have heat insulation.

なお、本実施形態では、真空断熱材３０を採用しているが、これに限らない。例えば、エアロゲルや発泡スチロール等であってもよい。 In addition, although the vacuum heat insulating material 30 is adopted in this embodiment, it is not limited to this. For example, it may be airgel, expanded polystyrene, or the like.

［流路形成部材１４］
流路形成部材１４は、上述した流路形成部材１４Ａ、１４Ｂの両方を含むものである。流路形成部材１４は、内箱凹部１０Ａに収容される樹脂製の断熱板部材１４１と、断熱板部材１４１の庫内側を向く外面１４１ａの高さ方向の全体にわたる範囲で、かつ幅方向の全体にわたる範囲を覆う金属材料からなる金属被覆板１４２と、を備えている（図３参照）。本実施形態では、金属被覆板１４２は保持板１４３を介して断熱板部材１４１の外面１４１ａに取り付けられている。なお、図３では、金属被覆板１４２が高さ方向の全体の範囲を覆うように配置されているが、金属被覆板１４２としては、外面１４１ａの少なくとも一部の範囲で、かつ幅方向の全体にわたる範囲を覆うように配置されていてもよい。 [Flow path forming member 14]
The flow path forming member 14 includes both flow path forming members 14A and 14B described above. The flow path forming member 14 extends over the entire height direction and the entire width direction of the resin heat insulating plate member 141 accommodated in the inner box recess 10A and the outer surface 141a of the heat insulating plate member 141 facing the inside of the chamber. and a metal-coated plate 142 made of a metal material that covers a range extending over (see FIG. 3). In this embodiment, the metal coating plate 142 is attached to the outer surface 141 a of the heat insulating plate member 141 via the holding plate 143 . In FIG. 3, the metal-coated plate 142 is arranged to cover the entire range in the height direction. may be arranged so as to cover a range of

断熱板部材１４１は、上方から見て後方に開口する凹形状に形成され、その凹部が流路１４Ｃを形成している。断熱板部材１４１は、発泡スチロール（ＥＰＳ）等から形成されている。断熱板部材１４１は、幅方向の中央に位置する板状壁１４１Ａと、板状壁１４１Ａの左右両側に位置する一対の側壁部１４１Ｂ（１４１Ｂａ、１４１Ｂｂ）と、を備えている。上方から見て左側に位置する側壁部１４１Ｂａは、右側に位置する側壁部１４１Ｂｂよりも幅方向の長さが大きくなっている。すなわち、流路形成部材１４の流路１４Ｃは、幅方向の一方（右側）にずれた位置に設けられている。流路１４Ｃの奥行方向の長さ（側壁部１４１Ｂの板状壁１４１Ａからの後方に延びる高さ）は、流路形成部材１４が内箱凹部１０Ａに取り付けられた状態で内箱凹部１０Ａの内側に流路１４Ｃが位置する寸法に設定されている。本実施形態では、図３に示すように、幅方向の長さの大きな左側の側壁部１４１Ｂａに上述した温度センサ１１０が埋め込まれている。これにより、温度センサ１１０は、冷気が流通する流路１４Ｃの外側で、かつ外気の温度が拾いにくいように真空断熱材３４に覆われている。 The heat insulating plate member 141 is formed in a concave shape that opens rearward when viewed from above, and the concave portion forms the flow path 14C. The heat insulating plate member 141 is made of expanded polystyrene (EPS) or the like. The heat insulating plate member 141 includes a plate-like wall 141A positioned in the center in the width direction, and a pair of side walls 141B (141Ba, 141Bb) positioned on both left and right sides of the plate-like wall 141A. The side wall portion 141Ba located on the left side as viewed from above has a width direction length larger than that of the side wall portion 141Bb located on the right side. That is, the channel 14C of the channel forming member 14 is provided at a position shifted to one side (right side) in the width direction. The length of the flow path 14C in the depth direction (the height of the side wall 141B extending rearward from the plate-like wall 141A) is the inner side of the inner box recess 10A with the flow path forming member 14 attached to the inner box recess 10A. The dimension is set such that the flow path 14C is positioned at the In this embodiment, as shown in FIG. 3, the above-described temperature sensor 110 is embedded in the left side wall portion 141Ba having a large length in the width direction. Thereby, the temperature sensor 110 is outside the flow path 14C through which cool air flows and is covered with the vacuum heat insulating material 34 so that the temperature of the outside air is difficult to pick up.

図５に示すように、保持板１４３は、断熱板部材１４１の外面１４１ａを覆う薄板の板本体１４３Ａと、板本体１４３Ａの幅方向の両側において後方に向けて突出し、内箱凹部１０Ａの内側に介在する支持壁１４３Ｂと、を備えている。断熱板部材１４１は、一対の支持壁１４３Ｂによって挟み込まれて支持されている。板本体１４３Ａは、幅方向で断熱板部材１４１よりも左右両側に張り出している。この張り出した部分を張出端部１４Ｄという。保持板１４３は、例えばポリプロピレン（ＰＰ）等の材料から形成されている。 As shown in FIG. 5, the retaining plate 143 includes a thin plate main body 143A covering the outer surface 141a of the heat insulating plate member 141, and protrudes rearward from both sides of the plate main body 143A in the width direction to extend inside the inner box recess 10A. and an intervening support wall 143B. The heat insulating plate member 141 is sandwiched and supported by a pair of support walls 143B. The plate main body 143A protrudes to both the left and right sides of the heat insulating plate member 141 in the width direction. This projecting portion is referred to as projecting end portion 14D. The holding plate 143 is made of a material such as polypropylene (PP).

図３に示すように、金属被覆板１４２は、保持板１４３の板本体１４３Ａの外面１４３ａの少なくとも一部の範囲を覆うようにして接着材等の固定手段によって固定されている。そのため、金属被覆板１４２は、幅方向の両側で保持板１４３とともに断熱板部材１４１の端部より外側に張り出している。金属被覆板１４２の端部１４２ａは、板本体１４３Ａの端部１４３ｂを巻き込むカール部１４２ｂを形成している。金属被覆板１４２は、アルミ材、ホットスタンプ、メッキ等により形成された金属材料が採用されている。 As shown in FIG. 3, the metal coating plate 142 is fixed by fixing means such as an adhesive so as to cover at least a part of the outer surface 143a of the plate body 143A of the holding plate 143. As shown in FIG. Therefore, the metal coating plate 142 projects outward from the end portion of the heat insulating plate member 141 on both sides in the width direction together with the holding plate 143 . An end portion 142a of the metal coated plate 142 forms a curled portion 142b around which an end portion 143b of the plate body 143A is wound. The metal coating plate 142 employs a metal material formed by aluminum, hot stamping, plating, or the like.

［筐体１０の後壁２５の断熱構造］
図２に示すように、側方から見たとき、筐体１０の後壁２５は、内箱１０ａの内壁面２５ａ，２５ｂと、外箱１０ｂの内壁面２５ｃと、を含む。後壁２５は、上方から下方へ向けてそれぞれ鉛直に延びている。内箱１０ａのうち、内壁面２５ａは冷蔵室２７Ａの後方に位置し、内壁面２５ｂは小冷凍室２７Ｄ及び主冷凍室２７Ｅの後方に位置する。 [Heat insulation structure of rear wall 25 of housing 10]
As shown in FIG. 2, when viewed from the side, the rear wall 25 of the housing 10 includes inner wall surfaces 25a and 25b of the inner box 10a and an inner wall surface 25c of the outer box 10b. The rear walls 25 extend vertically from top to bottom. The inner wall surface 25a of the inner box 10a is located behind the refrigerator compartment 27A, and the inner wall surface 25b is located behind the small freezer compartment 27D and the main freezer compartment 27E.

図４に示すように、上方から見たとき、後壁２５の内壁面２５ａは、奥行方向において内壁面２５ａ内で最も外箱１０ｂに近い第１面２５ａａと、第１面２５ａａの左右両側に位置し当該第１面２５ａａよりも外箱１０ｂから前方へ離れた一対の第２面２５ａｂと、第１面２５ａａの左右両端と各第２面２５ａｂとを奥行方向で繋ぐ一対の第３面２５ａｃと、を有する。 As shown in FIG. 4, when viewed from above, the inner wall surface 25a of the rear wall 25 includes a first surface 25aa closest to the outer casing 10b in the depth direction within the inner wall surface 25a, and left and right sides of the first surface 25aa. A pair of second surfaces 25ab located further forward from the outer casing 10b than the first surfaces 25aa, and a pair of third surfaces 25ac connecting the left and right ends of the first surfaces 25aa and the second surfaces 25ab in the depth direction. and have

図２に示すように、後壁２５を構成する内箱１０ａには、内壁面２５ａの略全体を覆うようにして薄型断熱材１０ｅが設けられている。薄型断熱材１０ｅは、後壁２５の内壁面２５ａに沿って変形した状態で接着部材などによって貼り付けられている。筐体１０の後壁２５を構成する内箱１０ａと外箱１０ｂとの間の内部空間Ｋには、冷却ユニット１５Ｂで生じた徐霜水を蒸発皿１８へと導くための排出管部４４が配置されている。そのため、薄型断熱材１０ｅは、後壁２５を構成する内箱１０ａの内壁面２５ａのうち、少なくとも排出管部４４が設置された領域を除く領域を覆うようにして設けられている。 As shown in FIG. 2, the inner box 10a constituting the rear wall 25 is provided with a thin heat insulating material 10e so as to cover substantially the entire inner wall surface 25a. The thin heat insulating material 10e is adhered along the inner wall surface 25a of the rear wall 25 by an adhesive member or the like in a deformed state. In the internal space K between the inner box 10a and the outer box 10b that constitute the rear wall 25 of the housing 10, a discharge pipe portion 44 is arranged for guiding the defrosted water generated in the cooling unit 15B to the evaporating plate 18. ing. Therefore, the thin heat insulating material 10e is provided so as to cover an area of the inner wall surface 25a of the inner box 10a forming the rear wall 25, excluding at least the area where the discharge pipe portion 44 is installed.

同様に、筐体１０の後壁２５を構成する外箱１０ｂの内壁面２５ｃにも薄型断熱材１０ｆが貼り付けられている。薄型断熱材１０ｆは、後壁２５を構成する外箱１０ｂの内壁面２５ｃの略全体を覆うようにして貼り付けられている。 Similarly, the inner wall surface 25c of the outer box 10b forming the rear wall 25 of the housing 10 is also pasted with the thin heat insulating material 10f. The thin heat insulating material 10f is attached so as to cover substantially the entire inner wall surface 25c of the outer casing 10b that constitutes the rear wall 25. As shown in FIG.

後壁２５を構成する内箱１０ａと外箱１０ｂとの間において薄型断熱材１０ｅ，１０ｆを除く内部空間Ｋには、発泡断熱材１０ｃが隙間なく充填されている。これにより、後壁２５は断熱性を有する。発泡断熱材１０ｃは、後壁２５を構成する内箱１０ａと外箱１０ｂとの間に配置された排出管部４４の周囲を覆って配置されている。 An internal space K between the inner box 10a and the outer box 10b that constitute the rear wall 25, excluding the thin heat insulating materials 10e and 10f, is filled with the foam heat insulating material 10c without gaps. Thereby, the rear wall 25 has heat insulation. The foam heat insulating material 10c is arranged to cover the periphery of the discharge pipe portion 44 arranged between the inner box 10a and the outer box 10b that constitute the rear wall 25. As shown in FIG.

図４に示すように、筐体１０には、外箱１０ｂと内箱１０ａとの間の内部空間Ｋ内に発泡前の液体状の発泡断熱材１０ｃを注入させるための注入口６０が複数形成されている。外箱１０ｂの後壁２５には、例えば、４つの注入口６０が形成されている。一対の注入口６０ａは、左右方向両側に配置され、上下方向で互いの高さが同じ位置である。一対の注入口６０ａは、後壁２５のうち上壁２１に近い上端側に配置されている。残り一対の注入口６０ｂにおいても幅方向両側に配置され、上下方向の高さが互いに同じ高さである。これら一対の注入口６０ｂは、後壁２５のうち下壁２２に近い下端側に配置され、上記一対の注入口６０ａの真下にそれぞれ位置する。 As shown in FIG. 4, the housing 10 is provided with a plurality of injection ports 60 for injecting the liquid foamed heat insulating material 10c into the internal space K between the outer box 10b and the inner box 10a. It is For example, four inlets 60 are formed in the rear wall 25 of the outer casing 10b. The pair of inlets 60a are arranged on both sides in the left-right direction, and are positioned at the same height in the vertical direction. A pair of inlets 60 a are arranged on the upper end side of the rear wall 25 near the upper wall 21 . The remaining pair of inlets 60b are also arranged on both sides in the width direction and have the same height in the vertical direction. These pair of inlets 60b are arranged on the lower end side of the rear wall 25 near the lower wall 22, and are positioned immediately below the pair of inlets 60a.

上方から見たときの注入口６０は、奥行方向において内箱１０ａの境界部５１に対向する。各注入口６０には、ごとに、これら注入口６０を個別に閉塞可能な薄型蓋部材６１が複数設けられている。 The injection port 60 when viewed from above faces the boundary portion 51 of the inner box 10a in the depth direction. Each injection port 60 is provided with a plurality of thin cover members 61 capable of closing the injection port 60 individually.

［真空断熱材］
図４に示すように、筐体１０の後壁２５を構成する内箱１０ａと外箱１０ｂとの間には、真空断熱材３４が配置されている。真空断熱材３４は、内箱１０ａと外箱１０ｂとの間の内部空間Ｋを部分的に埋めるようにして設けられている。真空断熱材３４は、内箱１０ａと外箱１０ｂとの間の隙間を埋める中央部３４ａの厚さよりも、左右方向（幅方向）の両端部３４ｂの方が薄く形成されている。各両端部３４ｂと外箱１０ｂの内壁面２５ｃとの間の隙間は発泡断熱材１０ｃによって埋められる。真空断熱材３４は、内箱１０ａの内壁面２５ａ及び外箱１０ｂの内壁面２５ｃに接着部材などによって固定されている。 [Vacuum insulation]
As shown in FIG. 4, a vacuum heat insulating material 34 is arranged between the inner box 10a and the outer box 10b that constitute the rear wall 25 of the housing 10. As shown in FIG. The vacuum heat insulating material 34 is provided so as to partially fill the internal space K between the inner box 10a and the outer box 10b. The vacuum heat insulating material 34 is formed thinner at both ends 34b in the left-right direction (width direction) than the central portion 34a that fills the gap between the inner case 10a and the outer case 10b. The gap between each end portion 34b and the inner wall surface 25c of the outer box 10b is filled with the foam heat insulating material 10c. The vacuum heat insulating material 34 is fixed to the inner wall surface 25a of the inner box 10a and the inner wall surface 25c of the outer box 10b by an adhesive member or the like.

なお、本実施形態では、真空断熱材３４の中央部３４ａと左右の両端部３４ｂとで厚さが異なっているが、左右方向で一定の厚さを有していてもよい。例えば、真空断熱材３４の厚さが、内箱１０ａと外箱１０ｂとの間の内部空間Ｋの奥行寸法よりも狭い場合、その前面を内箱１０ａの内壁面２５ａに貼り合わせることによって、真空断熱材３４と外箱１０ｂの内壁面２５ｃとの間に形成される隙間に発泡断熱材１０ｃが充填される。逆に、真空断熱材３４の後面を外箱１０ｂの内壁面２５ｃに貼り合わせた場合は、真空断熱材３４と内箱１０ａの内壁面２５ａとの間に形成される隙間に発泡断熱材１０ｃが充填される。また、真空断熱材３４の厚さが、内箱１０ａと外箱１０ｂとの間の内部空間Ｋの奥行寸法と同じである場合は、真空断熱材３４と内箱１０ａ及び外箱１０ｂとの間には発泡断熱材１０ｃが充填されない構成となる。 In this embodiment, the central portion 34a and the left and right end portions 34b of the vacuum heat insulating material 34 have different thicknesses, but they may have a constant thickness in the left-right direction. For example, when the thickness of the vacuum heat insulating material 34 is narrower than the depth dimension of the internal space K between the inner box 10a and the outer box 10b, the front surface of the vacuum heat insulating material 34 is adhered to the inner wall surface 25a of the inner box 10a to reduce the vacuum. A gap formed between the heat insulating material 34 and the inner wall surface 25c of the outer box 10b is filled with the foam heat insulating material 10c. Conversely, when the rear surface of the vacuum heat insulating material 34 is adhered to the inner wall surface 25c of the outer box 10b, the foam heat insulating material 10c is formed in the gap formed between the vacuum heat insulating material 34 and the inner wall surface 25a of the inner box 10a. be filled. Further, when the thickness of the vacuum heat insulating material 34 is the same as the depth dimension of the internal space K between the inner box 10a and the outer box 10b, the thickness between the vacuum heat insulating material 34 and the inner box 10a and the outer box 10b is not filled with the foamed heat insulating material 10c.

図４及び図５に示すように、筐体１０の後壁２５に設けられた真空断熱材３４の幅方向の両側の第１端部３４ｃは、内箱１０ａの背面に後方に向けて凹む内箱凹部１０Ａの幅方向の両側の第２端部１０ｄよりも幅方向の内側に位置し、かつ、流路形成部材１４の断熱板部材１４１の端部１４１ｂより幅方向の内側に位置している。すなわち、真空断熱材３４の第１端部３４ｃは、支持壁１４３Ｂよりも幅方向の内側に位置する。また、真空断熱材３４の第１端部３４ｃは、流路形成部材１４の流路１４Ｃを形成する左右非対称の側壁部１４１Ｂａ、１４１Ｂｂに対して前後方向に重なっている。 As shown in FIGS. 4 and 5, the first ends 34c on both sides in the width direction of the vacuum heat insulating material 34 provided on the rear wall 25 of the housing 10 are recessed rearward on the back surface of the inner box 10a. It is positioned inside in the width direction from the second ends 10d on both sides in the width direction of the box recess 10A and is positioned inside in the width direction from the ends 141b of the heat insulating plate member 141 of the flow path forming member 14. . That is, the first end portion 34c of the vacuum heat insulating material 34 is located inside the support wall 143B in the width direction. Further, the first end portion 34c of the vacuum heat insulating material 34 overlaps the left-right asymmetric side wall portions 141Ba and 141Bb forming the flow path 14C of the flow path forming member 14 in the front-rear direction.

本実施形態では、図４に示すように、真空断熱材３４の幅方向の長さＬ１０が高さ方向全体にわたってほぼ一定である。また、真空断熱材３４の幅方向の長さＬ１０は、内箱凹部１０Ａの幅方向の長さＬ１１よりも短い。真空断熱材３４の幅方向の両側の第１端部３４ｃは、上述した注入口６０よりも内側に位置し、注入口６０から離れている。真空断熱材３４の第１端部３４ｃと注入口６０の中心線との距離は、内箱１０ａにおける内壁面２５ａの第３面２５ａｃと注入口６０の中心線との距離よりも大きい。 In this embodiment, as shown in FIG. 4, the length L10 in the width direction of the vacuum heat insulating material 34 is substantially constant over the entire height direction. Further, the widthwise length L10 of the vacuum heat insulating material 34 is shorter than the widthwise length L11 of the inner box concave portion 10A. The first ends 34c on both sides in the width direction of the vacuum heat insulating material 34 are located inside the injection port 60 described above and are separated from the injection port 60 . The distance between the first end 34c of the vacuum heat insulating material 34 and the centerline of the injection port 60 is greater than the distance between the third surface 25ac of the inner wall surface 25a and the centerline of the injection port 60 in the inner box 10a.

次に、冷蔵庫１の動作および作用について説明する。 Next, the operation and action of refrigerator 1 will be described.

本実施形態に係る冷蔵庫１によれば、外箱１０ｂと内箱１０ａとを有する筐体１０と、外箱１０ｂと内箱１０ａとの間の内部空間Ｋに充填された発泡断熱材１０ｃと、筐体１０の後壁２５の外箱１０ｂと内箱１０ａとの間に設けられた真空断熱材３４と、を備え、真空断熱材３４の幅方向の第１端部３４ｃが内箱１０ａの背面に後方に向けて凹む内箱凹部１０Ａの幅方向の第２端部１０ｄよりも幅方向の内側に位置する。 According to the refrigerator 1 according to the present embodiment, the housing 10 having the outer box 10b and the inner box 10a, the foam insulating material 10c filled in the internal space K between the outer box 10b and the inner box 10a, A vacuum heat insulating material 34 is provided between the outer box 10b and the inner box 10a of the rear wall 25 of the housing 10, and the first end 34c in the width direction of the vacuum heat insulating material 34 is the back surface of the inner box 10a. It is positioned inside in the width direction of the second end portion 10d in the width direction of the inner box recess portion 10A recessed toward the rear.

本実施形態では、真空断熱材３４の第１端部３４ｃが内箱凹部１０Ａの第２端部１０ｄよりも幅方向で内側に位置していても、外箱１０ｂと内箱１０ａとの間の内部空間Ｋにおいて内箱凹部１０Ａを十分に断熱可能な範囲に配置することができ、従来と同等の断熱効果が得られる。すなわち、内箱凹部１０Ａに冷蔵庫１の流路形成部材１４の流路１４Ｃが配置される本実施形態では、真空断熱材３４の流路１４Ｃ内の流体（冷気）を効率よく断熱することができる。 In this embodiment, even if the first end 34c of the vacuum heat insulating material 34 is located inside the second end 10d of the inner box recess 10A in the width direction, the gap between the outer box 10b and the inner box 10a The inner box concave portion 10A can be arranged in a sufficiently heat-insulating range in the internal space K, and a heat insulating effect equivalent to the conventional one can be obtained. That is, in this embodiment in which the flow path 14C of the flow path forming member 14 of the refrigerator 1 is arranged in the inner box concave portion 10A, the fluid (cold air) in the flow path 14C of the vacuum heat insulating material 34 can be efficiently insulated. .

また、本実施形態では、真空断熱材３４の第１端部３４ｃが内箱凹部１０Ａの第２端部１０ｄよりも幅方向の内側に位置するので、真空断熱材３４の幅方向の長さＬ１０が内箱凹部１０Ａの長さＬ１１よりも小さくなる。そのため、断面視で後壁２５における内部空間Ｋにおける真空断熱材３４を除いた隙間の面積を増やすことができる。つまり、内部空間Ｋにおける隙間に充填されるウレタンが発泡した発泡断熱材１０ｃの充填量を増大することができる。これにより、後壁２５を含む筐体１０の剛性を高めることができる。 Further, in the present embodiment, the first end 34c of the vacuum heat insulating material 34 is located inside the second end 10d of the inner box recess 10A in the width direction, so the length L10 of the vacuum heat insulating material 34 in the width direction is smaller than the length L11 of the inner box recess 10A. Therefore, the area of the gap excluding the vacuum heat insulating material 34 in the internal space K in the rear wall 25 can be increased in a cross-sectional view. That is, the filling amount of the urethane-foamed foam heat insulating material 10c filled in the gap in the internal space K can be increased. Thereby, the rigidity of the housing 10 including the rear wall 25 can be increased.

本実施形態に係る冷蔵庫１によれば、真空断熱材３４の幅方向の両側に位置する第１端部３４ｃは、内箱凹部１０Ａの両側の第２端部１０ｄよりも幅方向の内側に位置する。この場合には、真空断熱材３４の一方側の第１端部３４ｃのみが内箱凹部１０Ａの一方側の第２端部１０ｄよりも幅方向の内側に位置する場合に比べて、真空断熱材３４の幅方向の長さＬ１０を内箱凹部１０Ａの長さＬ１１よりに対してより短くすることができる。これにより、内部空間Ｋに充填する発泡断熱材１０ｃの充填量を増やすことができ、筐体１０の剛性を高めることができる。 According to the refrigerator 1 according to the present embodiment, the first end portions 34c positioned on both sides in the width direction of the vacuum heat insulating material 34 are positioned inward in the width direction of the second ends 10d on both sides of the inner box recess portion 10A. do. In this case, compared to the case where only the first end 34c on one side of the vacuum heat insulating material 34 is located inside the second end 10d on one side of the inner box recess 10A in the width direction, the vacuum heat insulating material The length L10 in the width direction of 34 can be made shorter than the length L11 of the inner box concave portion 10A. Thereby, the filling amount of the foam heat insulating material 10c with which the internal space K is filled can be increased, and the rigidity of the housing 10 can be increased.

本実施形態に係る冷蔵庫１によれば、真空断熱材３４の第１端部３４ｃは、内箱凹部１０Ａの内側に流路１４Ｃを形成する流路形成部材１４の幅方向の端部よりも幅方向の内側に位置する。これにより、流路形成部材１４に形成される流路１４Ｃに対向する位置には真空断熱材３４を配置することができ、真空断熱材３４によって流路１４Ｃ内の冷気を確実に断熱することができる。そして、流路１４Ｃに対して幅方向の外側に位置する部分には流路１４Ｃが無く比較的、断熱効果が低くなるので、例えば本実施形態のように流路形成部材１４の張出端部１４Ｄが金属製（アルミ製）の場合に、その金属製の張出端部１４Ｄが断熱されることに伴う結露の発生を抑えることができる。 According to the refrigerator 1 according to the present embodiment, the first end 34c of the vacuum heat insulating material 34 is wider than the end in the width direction of the flow path forming member 14 that forms the flow path 14C inside the inner box recess 10A. located inside the direction. As a result, the vacuum heat insulating material 34 can be arranged at a position facing the flow path 14C formed in the flow path forming member 14, and the cold air in the flow path 14C can be reliably insulated by the vacuum heat insulating material 34. can. Since there is no flow path 14C in the portion located outside the flow path 14C in the width direction and the heat insulating effect is relatively low, for example, the projecting end portion of the flow path forming member 14 as in the present embodiment When 14D is made of metal (made of aluminum), it is possible to suppress the occurrence of dew condensation due to thermal insulation of the overhanging end portion 14D made of metal.

本実施形態に係る冷蔵庫１によれば、流路形成部材１４の内部空間Ｋ側の外面全体にわたって金属材料で覆われている。流路形成部材１４の張出端部１４Ｄが金属製の場合には、上述したように金属製の張出端部１４Ｄが断熱されることに伴う結露の発生を抑えることができる。 According to the refrigerator 1 according to the present embodiment, the entire outer surface of the passage forming member 14 on the inner space K side is covered with a metal material. When the projecting end portion 14D of the flow path forming member 14 is made of metal, it is possible to suppress the occurrence of dew condensation due to the thermal insulation of the projecting end portion 14D made of metal as described above.

本実施形態に係る冷蔵庫１によれば、流路形成部材１４は、内箱凹部１０Ａに収容される樹脂製の断熱板部材１４１と、断熱板部材１４１の内部空間Ｋ側を向く外面を覆う金属材料からなる金属被覆板１４２と、を有している。そして、金属被覆板１４２は幅方向の両側で断熱板部材１４１より張り出して設けられ、真空断熱材３４の第１端部３４ｃは、断熱板部材１４１の幅方向の外側の端部より内側に位置する。これにより、真空断熱材３４によって断熱板部材１４１を十分に断熱できる領域に配置することができる。そして、断熱板部材１４１の幅方向の外側に張り出す金属被覆板１４２の張り出し部分（張出端部１４Ｄに相当する）の断熱効果を低くすることができ、その金属被覆板１４２における張出端部１４Ｄの結露の発生を抑えることができる。 According to the refrigerator 1 according to the present embodiment, the passage forming member 14 includes the resin-made heat insulating plate member 141 accommodated in the inner box concave portion 10A, and the metal plate member covering the outer surface of the heat insulating plate member 141 facing the inner space K side. and a metal coated plate 142 made of material. The metal coating plate 142 is provided to protrude from the heat insulating plate member 141 on both sides in the width direction, and the first end portion 34c of the vacuum heat insulating material 34 is positioned inside the outer end portion of the heat insulating plate member 141 in the width direction. do. Thereby, the heat insulating plate member 141 can be arranged in a region where the heat insulating plate member 141 can be sufficiently insulated by the vacuum heat insulating material 34 . The overhanging portion (corresponding to the overhanging end portion 14D) of the metal-coated plate 142 overhanging in the width direction of the heat-insulating plate member 141 can be reduced in the heat-insulating effect. It is possible to suppress the occurrence of dew condensation on the portion 14D.

本実施形態に係る冷蔵庫１によれば、金属被覆板１４２がアルミ材により形成されている。この場合、真空断熱材３４の第１端部３４ｃが内箱凹部１０Ａの第２端部１０ｄよりも幅方向の内側に位置し、流路形成部材１４の張出端部１４Ｄが金属製のアルミ材であるので、張出端部１４Ｄが断熱されることに伴う結露の発生をより確実に抑えることができる。 According to the refrigerator 1 according to this embodiment, the metal covering plate 142 is made of an aluminum material. In this case, the first end portion 34c of the vacuum heat insulating material 34 is located inside the second end portion 10d of the inner box recess portion 10A in the width direction, and the projecting end portion 14D of the flow path forming member 14 is made of metal aluminum. Since it is made of material, it is possible to more reliably suppress the occurrence of dew condensation due to thermal insulation of the projecting end portion 14D.

本実施形態に係る冷蔵庫１によれば、金属被覆板１４２の幅方向の両側には、後方に向けて突出し、内箱凹部１０Ａの内側に介在する支持壁１４３Ｂを有している。断熱板部材１４１は、一対の支持壁１４３Ｂ、１４３Ｂによって挟み込まれて支持され、真空断熱材３４の第１端部３４ｃは、支持壁１４３Ｂ、１４３Ｂより内側に位置する。これにより、真空断熱材３４によって支持壁１４３Ｂ、１４３Ｂよりも幅方向の内側に位置する断熱板部材１４１を十分に断熱できる領域に配置することができる。そして、支持壁１４３Ｂ、１４３Ｂの幅方向の外側に張り出す金属被覆板１４２の張り出し部分（張出端部１４Ｄに相当する）の断熱効果を低くすることができ、その金属被覆板１４２における張出端部１４Ｄの結露の発生を抑えることができる。 According to the refrigerator 1 according to the present embodiment, on both sides in the width direction of the metal covering plate 142, there are supporting walls 143B that protrude rearward and are interposed inside the inner box recessed portion 10A. The heat insulating plate member 141 is sandwiched and supported by a pair of support walls 143B, 143B, and the first end 34c of the vacuum heat insulating material 34 is located inside the support walls 143B, 143B. As a result, the heat insulating plate member 141 located inside the support walls 143B in the width direction can be arranged in a region where the vacuum heat insulating material 34 can sufficiently insulate the heat insulating plate member 141 . Then, it is possible to reduce the heat insulating effect of the protruding portions (corresponding to the protruding end portions 14D) of the metal-coated plates 142 that protrude outward in the width direction of the support walls 143B, 143B. It is possible to suppress the occurrence of dew condensation on the end portion 14D.

本実施形態に係る冷蔵庫１によれば、流路形成部材１４の流路１４Ｃは、幅方向の一方（左右方向の右側）にずれた位置に設けられ、真空断熱材３４の第１端部３４ｃが流路形成部材１４の流路１４Ｃを形成する左右非対称の側壁部１４１Ｂに対して前後方向に重なっている。この場合には、本実施形態のように流路形成部材１４の流路１４Ｃが左右非対称となるように配置される場合であっても、真空断熱材３４の第１端部３４ｃが両側の側壁部１４１Ｂに重なっているので流路１４Ｃの領域を覆うように真空断熱材３４を配置することができ、流路１４Ｃの冷気を確実に断熱することができる。 According to the refrigerator 1 according to the present embodiment, the flow path 14C of the flow path forming member 14 is provided at a position shifted to one side in the width direction (right side in the left-right direction), and the first end portion 34c of the vacuum heat insulating material 34 overlaps the laterally asymmetric side wall portion 141B forming the flow path 14C of the flow path forming member 14 in the front-rear direction. In this case, even if the flow path 14C of the flow path forming member 14 is arranged asymmetrically as in the present embodiment, the first end portion 34c of the vacuum heat insulating material 34 is located on both side walls. Since it overlaps with the portion 141B, the vacuum heat insulating material 34 can be arranged so as to cover the area of the flow path 14C, and the cold air in the flow path 14C can be reliably insulated.

本実施形態に係る冷蔵庫１によれば、外箱１０ｂは、発泡前の発泡断熱材１０ｃを内部空間Ｋに注入するための注入口６０を有する。これにより、真空断熱材３４の第１端部３４ｃの位置が上述したように内箱凹部１０Ａの第２端部１０ｄよりも内側に位置することから、発泡断熱材１０ｃを注入する注入口６０を真空断熱材３４との幅方向の距離を大きくとることができる。そのため、注入口６０より注入される発泡断熱材１０ｃの流通領域を十分に確保することができ充填効率を高めることができる。すなわち、後壁２５における外箱１０ｂと内箱１０ａとの間の内部空間Ｋにより確実に隙間なく発泡断熱材１０ｃを充填することができ、筐体１０の剛性の低下を抑制できる。 According to the refrigerator 1 according to the present embodiment, the outer casing 10b has the injection port 60 for injecting the foamed heat insulating material 10c into the internal space K before foaming. As a result, since the first end 34c of the vacuum heat insulating material 34 is positioned inside the second end 10d of the inner box recess 10A as described above, the injection port 60 for injecting the foam heat insulating material 10c is provided. A large distance in the width direction from the vacuum heat insulating material 34 can be secured. Therefore, it is possible to secure a sufficient distribution area for the heat insulating foam material 10c to be injected from the injection port 60, and to increase the filling efficiency. That is, the internal space K between the outer box 10b and the inner box 10a in the rear wall 25 can be reliably filled with the foamed heat insulating material 10c without a gap, and a decrease in rigidity of the housing 10 can be suppressed.

以上説明した少なくともひとつの実施形態によれば、断熱効果の低下を抑えつつ筐体の剛性を高めることができる冷蔵庫を提供することができる。 According to at least one of the embodiments described above, it is possible to provide a refrigerator capable of increasing the rigidity of the housing while suppressing deterioration of the heat insulating effect.

（第２実施形態）
次に、第２実施形態による冷蔵庫１Ａについて、図６及び図７に基づいて説明する。冷蔵庫１Ａは、流路形成部材１４Ｅが上述した第１実施形態の流路形成部材１４と形状が異なっている。すなわち、第２実施形態の流路形成部材１４Ｅは、左右の側壁部１４１Ｂ（１４１Ｂａ、１４１Ｂｂ）の幅方向の長さが同じである。側壁部１４１Ｂの幅方向の外側に板状壁１４１Ａの端部が位置している。つまり、一対の側壁部１４１Ｂａ、１４１Ｂｂは、第１実施形態に比べて幅方向の内側に位置しているので、流路１４Ｃの幅寸法も小さくなっている。 (Second embodiment)
Next, a refrigerator 1A according to a second embodiment will be described with reference to FIGS. 6 and 7. FIG. Refrigerator 1A is different in shape from flow path forming member 14 of the first embodiment, in which flow path forming member 14E is described above. That is, in the flow path forming member 14E of the second embodiment, the left and right side wall portions 141B (141Ba, 141Bb) have the same length in the width direction. An end portion of the plate-like wall 141A is located outside the side wall portion 141B in the width direction. That is, since the pair of side wall portions 141Ba and 141Bb are located inside in the width direction compared to the first embodiment, the width dimension of the channel 14C is also small.

そして、第２実施形態の冷蔵庫１Ａでは、真空断熱材３４の第１端部３４ｃが流路形成部材１４Ｅの断熱板部材１４１の幅方向の端部１４１ｂと同じであり、側壁部１４１Ｂの端部１４１ｂよりも幅方向の外側に位置している。 In the refrigerator 1A of the second embodiment, the first end portion 34c of the vacuum heat insulating material 34 is the same as the widthwise end portion 141b of the heat insulating plate member 141 of the flow path forming member 14E, and the end portion of the side wall portion 141B 141b is located outside in the width direction.

第２実施形態では、内箱凹部１０Ａの内側において、流路１４Ｃの幅方向の外側部分の近傍、或いはこの外側部分の一部に真空断熱材３４が配置される。そのため、この外側部分においても真空断熱材３４よる断熱効果をもたせることができる。 In the second embodiment, the vacuum heat insulating material 34 is arranged in the vicinity of the widthwise outer portion of the flow path 14C or part of the outer portion inside the inner box recess portion 10A. Therefore, the heat insulating effect of the vacuum heat insulating material 34 can be provided also in this outer portion.

（第３実施形態）
次に、第３実施形態による冷蔵庫１Ｂについて、図８に基づいて説明する。冷蔵庫１Ｂは、上述した第１実施形態の冷蔵庫１の流路形成部材１４の金属被覆板１４２の端部１４２ａに形成されるカール部１４２ｂ（図５参照）を省略した構成である。 (Third embodiment)
Next, a refrigerator 1B according to a third embodiment will be described with reference to FIG. The refrigerator 1B has a configuration in which the curled portion 142b (see FIG. 5) formed at the end portion 142a of the metal coating plate 142 of the passage forming member 14 of the refrigerator 1 of the first embodiment is omitted.

（第４実施形態）
次に、第４実施形態による冷蔵庫１Ｃについて、図９に基づいて説明する。冷蔵庫１Ｃは、上述した第１実施形態の冷蔵庫１の真空断熱材３４の第１端部３４ｃの位置を変えた構成である。すなわち、冷蔵庫１Ｃは、流路形成部材１４の流路１４Ｃが幅方向の一方（左右方向の右側）にずれた位置に設けられ、真空断熱材３４の第１端部３４ｃが流路形成部材１４の流路１４Ｃを形成する左右非対称の側壁部１４１Ｂａ、１４１Ｂｂのそれぞれに合わせて重なり長Ｌ１２、Ｌ１３を異ならせて前後方向に重なっている。具体的に真空断熱材３４は、幅方向の長さが短い右側の側壁部１４１Ｂｂの重なり長Ｌ１３が、幅方向の長さが長い左側の側壁部１４１Ｂａの重なり長Ｌ１２よりも大きくなっている。 (Fourth embodiment)
Next, a refrigerator 1C according to a fourth embodiment will be described with reference to FIG. 1 C of refrigerators are the structures which changed the position of the 1st edge part 34c of the vacuum heat insulating material 34 of the refrigerator 1 of 1st Embodiment mentioned above. That is, in the refrigerator 1C, the flow path 14C of the flow path forming member 14 is provided at a position shifted to one side in the width direction (to the right in the left-right direction), and the first end 34c of the vacuum heat insulating material 34 is located at the flow path forming member 14. They are overlapped in the front-rear direction with different overlap lengths L12 and L13 in accordance with the laterally asymmetric side wall portions 141Ba and 141Bb forming the flow path 14C. Specifically, in the vacuum heat insulating material 34, the overlapping length L13 of the right side wall portion 141Bb having a short widthwise length is longer than the overlapping length L12 of the left side wall portion 141Ba having a long widthwise length.

第４実施形態では、流路形成部材１４の流路１４Ｃが左右非対称となるように配置される場合であっても、真空断熱材３４の第１端部３４ｃが両側の側壁部に重なっているので流路１４Ｃの領域を覆うように真空断熱材３４を配置することができ、流路１４Ｃの冷気を確実に断熱することができる。 In the fourth embodiment, even when the flow paths 14C of the flow path forming member 14 are arranged asymmetrically, the first end 34c of the vacuum heat insulating material 34 overlaps the sidewalls on both sides. Therefore, the vacuum heat insulating material 34 can be arranged so as to cover the area of the flow path 14C, and the cold air in the flow path 14C can be reliably insulated.

また、本実施形態では、真空断熱材３４が左右非対称の側壁部のそれぞれに合わせて重なり長が異なっているので、流路１４Ｃの幅方向にずれた分だけ、真空断熱材３４の幅方向の長さ寸法を短くすることができる。そのため、真空断熱材３４の幅方向の長さＬ１０をより短くすることができ、内部空間Ｋに充填する発泡断熱材１０ｃの充填量を増やすことが可能となり、筐体１０の剛性を高めることができる。 Further, in the present embodiment, the vacuum heat insulating material 34 has different overlapping lengths corresponding to the left-right asymmetrical side wall portions. The length dimension can be shortened. Therefore, the length L10 in the width direction of the vacuum heat insulating material 34 can be further shortened, and the amount of the foam heat insulating material 10c filled in the internal space K can be increased, and the rigidity of the housing 10 can be increased. can.

さらに、本実施形態では、真空断熱材３４が側壁部の幅方向の長さが短い方で前記重なり長が大きくなっているので、真空断熱材３４の第１端部３４ｃが長さの短い側壁部に対する重なり長に合わせて長さの長い方の重なり長を設定することができる。そのため、真空断熱材３４の幅方向の長さＬ１０をより短くすることができ、内部空間Ｋに充填する発泡断熱材１０ｃの充填量を増やすことが可能となり、筐体１０の剛性を高めることができる。 Furthermore, in the present embodiment, since the vacuum heat insulating material 34 has the shorter side wall portion in the width direction, the overlap length is larger, so that the first end portion 34c of the vacuum heat insulating material 34 is formed on the side wall having the shorter length. The longer overlapping length can be set according to the overlapping length with respect to the part. Therefore, the length L10 in the width direction of the vacuum heat insulating material 34 can be further shortened, and the amount of the foam heat insulating material 10c filled in the internal space K can be increased, and the rigidity of the housing 10 can be increased. can.

本発明のいくつかの実施形態を説明したが、これらの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれると同様に、特許請求の範囲に記載された発明とその均等の範囲に含まれるものである。 While several embodiments of the invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and their modifications are included in the scope and spirit of the invention, as well as the scope of the invention described in the claims and equivalents thereof.

なお、本実施形態では、冷蔵庫の扉が観音開き式であるとして説明したが、上記各実施形態の真空断熱材は、観音開き式でない冷蔵庫に用いられてもよい。 In the present embodiment, the door of the refrigerator is of the double-opening type, but the vacuum heat insulating material of each of the above-described embodiments may be used in refrigerators that are not of the double-opening type.

また、本実施形態では、発泡断熱材１０ｃ（第１断熱材）より断熱性能の高い第２断熱材として例えばグラスウールや多孔質体からなる芯材を有する真空断熱材３０（３４）を採用しているが、これに限定されることはない。例えば、第２断熱材としては、エアロゲル、キセロゲル、またはクライオゲルを含む断熱材を採用してもよい。 In addition, in the present embodiment, a vacuum heat insulating material 30 (34) having a core material made of, for example, glass wool or a porous body is used as a second heat insulating material having a higher heat insulating performance than the foam heat insulating material 10c (first heat insulating material). Yes, but not limited to this. For example, the second insulation may employ insulation that includes aerogel, xerogel, or cryogel.

また、本実施形態では、外箱１０ｂと内箱１０ａとの間の内部空間に充填される第１断熱材として発泡断熱材１０ｃを採用しているが他の断熱材を採用することも可能である。例えば、上記第２断熱材で挙げたようなエアロゲル、キセロゲル、またはクライオゲルを含む真空断熱材を採用してもよい。 Further, in this embodiment, the foamed heat insulating material 10c is used as the first heat insulating material filled in the inner space between the outer box 10b and the inner box 10a, but other heat insulating material can be used. be. For example, a vacuum insulation material including aerogel, xerogel, or cryogel as mentioned in the second insulation material may be employed.

また、冷蔵庫１に設けられる注入口６０の数は４つに限らない。例えば、冷蔵庫１の容量等によって適宜設定される。 Further, the number of injection ports 60 provided in refrigerator 1 is not limited to four. For example, it is appropriately set depending on the capacity of the refrigerator 1 or the like.

１、１Ａ、１Ｂ、１Ｃ…冷蔵庫、１０…筐体、１０Ａ…内箱凹部、１０ａ…内箱、１０ｂ…外箱、１０ｃ…発泡断熱材（第１断熱材）、１０ｄ…第２端部、１４、１４Ｅ…流路形成部材、１４Ｃ…流路、１４Ｄ…張出端部、２５…後壁、３４…真空断熱材（第２断熱材）、３４ｃ…第１端部、６０…注入口、１４１…断熱板部材、１４２…金属被覆板、１４３Ｂ…支持壁、Ｋ…内部空間 1, 1A, 1B, 1C... Refrigerator, 10... Case, 10A... Inner box concave part, 10a... Inner box, 10b... Outer case, 10c... Foam insulating material (first insulating material), 10d... Second end, 14, 14E... Flow path forming member, 14C... Flow path, 14D... Overhang end, 25... Rear wall, 34... Vacuum heat insulating material (second heat insulating material), 34c... First end, 60... Inlet, 141... Heat insulating plate member, 142... Metal coated plate, 143B... Support wall, K... Internal space

Claims (12)

外箱と内箱とを有する筐体と、
前記外箱と前記内箱との間の内部空間に充填された第１断熱材と、
前記筐体の後壁の前記外箱と前記内箱との間に設けられ、前記第１断熱材よりも断熱性能が高い第２断熱材と、を備え、
前記第２断熱材の幅方向の第１端部は、前記内箱の背面に後方に向けて凹む内箱凹部の幅方向の第２端部よりも前記幅方向の内側に位置する冷蔵庫。 a housing having an outer box and an inner box;
a first heat insulating material filled in an internal space between the outer box and the inner box;
A second heat insulating material provided between the outer box and the inner box on the rear wall of the housing and having higher heat insulating performance than the first heat insulating material,
A first widthwise end of the second heat insulating material is positioned inside the widthwise direction of a second widthwise end of a recessed portion of the inner box that is recessed rearward in the back surface of the inner box. 前記第２断熱材の前記幅方向の両側に位置する前記第１端部は、前記内箱凹部の両側の前記第２端部よりも前記幅方向の内側に位置する請求項１に記載の冷蔵庫。 2. The refrigerator according to claim 1, wherein said first end portions located on both sides in said width direction of said second heat insulating material are located further inside in said width direction than said second end portions located on both sides of said inner box concave portion. . 前記第２断熱材の前記第１端部は、前記内箱凹部の内側に流路を形成する流路形成部材の幅方向の端部よりも前記幅方向の内側に位置する、請求項１又は２に記載の冷蔵庫。 2. The first end portion of the second heat insulating material is located inside the width direction of the width direction end portion of the flow path forming member that forms the flow path inside the inner box recessed portion. 2. The refrigerator according to 2. 前記流路形成部材の前記庫内側の外面は、高さ方向の少なくとも一部の範囲で、かつ前記幅方向の全体にわたる範囲が金属材料で覆われている、請求項３に記載の冷蔵庫。 4. The refrigerator according to claim 3, wherein the outer surface of the flow path forming member inside the refrigerator is covered with a metal material over at least a part of the range in the height direction and over the entire range in the width direction. 前記流路形成部材は、前記内箱凹部に収容される樹脂製の断熱板部材と、該断熱板部材の前記庫内側を向く外面を覆う前記金属材料からなる金属被覆板と、を有し、
前記金属被覆板は前記幅方向の両側で前記断熱板部材より張り出して設けられ、
前記第２断熱材の前記第１端部は、前記断熱板部材の幅方向の外側の端部より内側に位置する、請求項４に記載の冷蔵庫。 The flow path forming member has a resin-made heat insulating plate member accommodated in the inner box recess, and a metal coating plate made of the metal material covering the outer surface of the heat insulating plate member facing the inside of the container,
The metal coated plate is provided on both sides in the width direction so as to protrude from the heat insulating plate member,
5. The refrigerator according to claim 4, wherein said first end of said second heat insulating material is located inside a widthwise outer end of said heat insulating plate member. 前記金属被覆板は、アルミ材により形成されている、請求項５に記載の冷蔵庫。 6. The refrigerator according to claim 5, wherein said metal-coated plate is made of an aluminum material. 前記第２断熱材の前記第１端部は、前記断熱板部材の幅方向の端部と同じ、又は前記幅方向の外側に位置している、請求項５又は６に記載の冷蔵庫。 7. The refrigerator according to claim 5 or 6, wherein said first end of said second heat insulating material is located on the same side as or outside in the width direction of the end of said heat insulating plate member in the width direction. 前記金属被覆板の幅方向の両側には、後方に向けて突出し、前記内箱凹部の内側に介在する支持壁を有し、
前記断熱板部材は、一対の前記支持壁によって挟み込まれて支持され、
前記第２断熱材の前記第１端部は、前記支持壁より内側に位置する、請求項５乃至７のいずれか１項に記載の冷蔵庫。 On both sides of the metal-coated plate in the width direction, supporting walls protrude rearward and are interposed inside the inner box recess,
The heat insulating plate member is sandwiched and supported by the pair of support walls,
8. The refrigerator according to any one of claims 5 to 7, wherein said first end of said second heat insulating material is located inside said support wall. 前記流路形成部材の前記流路は、幅方向の一方にずれた位置に設けられ、
前記第２断熱材の前記第１端部は、前記流路形成部材の前記流路を形成する左右非対称の側壁部に対して前後方向に重なっている、請求項３乃至８のいずれか１項に記載の冷蔵庫。 the flow path of the flow path forming member is provided at a position shifted to one side in the width direction,
9. The first end portion of the second heat insulating material overlaps in the front-rear direction with respect to a left-right asymmetric side wall portion forming the flow path of the flow path forming member. Refrigerator as described. 前記第２断熱材は、左右非対称の前記側壁部のそれぞれに合わせて重なり長が異なる、請求項９に記載の冷蔵庫。 10. The refrigerator according to claim 9, wherein said second heat insulating material has different overlapping lengths according to said laterally asymmetric side wall portions. 前記第２断熱材は、前記側壁部の幅方向の長さが短い方で前記重なり長が大きい、請求項１０に記載の冷蔵庫。 11. The refrigerator according to claim 10, wherein said second heat insulating material has a shorter length in the width direction of said side wall portion and a larger overlapping length. 前記外箱は、前記第１断熱材を前記内部空間に注入するための注入口を有する、請求項１乃至１１のいずれか１項に記載の冷蔵庫。 12. The refrigerator according to any one of claims 1 to 11, wherein said outer case has an injection port for injecting said first heat insulating material into said internal space.

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