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JP6948165B2 - refrigerator - Google Patents
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JP6948165B2 - refrigerator - Google Patents

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JP6948165B2
JP6948165B2 JP2017115148A JP2017115148A JP6948165B2 JP 6948165 B2 JP6948165 B2 JP 6948165B2 JP 2017115148 A JP2017115148 A JP 2017115148A JP 2017115148 A JP2017115148 A JP 2017115148A JP 6948165 B2 JP6948165 B2 JP 6948165B2
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heat insulating
insulating material
vacuum heat
refrigerator
back plate
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JP2019002582A (en
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達 吉高神
達 吉高神
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Toshiba Lifestyle Products and Services Corp
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Toshiba Lifestyle Products and Services Corp
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Priority to JP2017115148A priority Critical patent/JP6948165B2/en
Priority to CN201810566710.9A priority patent/CN109028738B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • F25D23/065—Details
    • F25D23/066—Liners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2201/00—Insulation
    • F25D2201/10—Insulation with respect to heat
    • F25D2201/12—Insulation with respect to heat using an insulating packing material

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

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.

従来、冷蔵庫の断熱壁としてウレタン等の発泡断熱材と真空断熱材を併用したものがある。 Conventionally, there is a refrigerator in which a foam heat insulating material such as urethane and a vacuum heat insulating material are used in combination as a heat insulating wall of a refrigerator.

特開２０１４−５２１２４号公報Japanese Unexamined Patent Publication No. 2014-52124

さて、発泡断熱材を注入するためには、真空断熱材で注入口を塞がないようにする必要がある。しかしながら、注入口を塞がないようにするためには真空断熱材を小さくする必要があり、断熱性能が低下するおそれがある。
そこで、断熱性能が低下することを抑制しつつ、発泡断熱材の注入口を塞ぐことがない冷蔵庫を提供する。 Now, in order to inject the foam heat insulating material, it is necessary to prevent the injection port from being blocked by the vacuum heat insulating material. However, in order not to block the injection port, it is necessary to make the vacuum heat insulating material small, which may reduce the heat insulating performance.
Therefore, we provide a refrigerator that does not block the injection port of the foamed heat insulating material while suppressing the deterioration of the heat insulating performance.

実施形態の冷蔵庫は、貯蔵室を形成する内箱と外殻を形成する外箱との間に設けられ、真空断熱材および発泡断熱材で構成されている断熱壁と、外箱の背面を形成し、真空断熱材が取り付けられるとともに発泡断熱材の原液を注入する注入口が形成されている背板と、を備え、背板には、注入口が冷蔵庫の上下方向の中央部であって左右の端部側に１つずつ形成されており、真空断熱材は、冷蔵庫の上下方向に隣り合って配置される２枚で構成されているとともに隣り合う側の角部に面取り部が形成されており、注入口は、隣り合う真空断熱材の面取り部間に形成される空間部に位置している。 The refrigerator of the embodiment is provided between the inner box forming the storage chamber and the outer box forming the outer shell, and forms the heat insulating wall composed of the vacuum heat insulating material and the foam heat insulating material and the back surface of the outer box. The back plate is provided with a back plate to which the vacuum heat insulating material is attached and an injection port for injecting the stock solution of the foam heat insulating material is formed. The vacuum heat insulating material is formed of two heat insulating materials arranged next to each other in the vertical direction of the refrigerator, and a chamfered portion is formed at the corners on the adjacent sides. The inlet is located in a space formed between the chamfers of the adjacent vacuum heat insulating materials.

真空断熱材の取り付け態様を模式的に示す図The figure which shows typically the mounting mode of the vacuum heat insulating material. 真空断熱材を模式的に示す図The figure which shows the vacuum heat insulating material schematically 冷蔵庫を上方から見た場合の断面を模式的に示す図The figure which shows typically the cross section when the refrigerator is seen from above. 真空断熱材が重ねられている態様を模式的に示す図The figure which shows typically the mode in which the vacuum heat insulating material is stacked. 真空断熱材と注入口との位置関係を模式的に示す図The figure which shows typically the positional relationship between a vacuum heat insulating material and an inlet 参考例としての真空断熱材と注入口との位置関係を模式的に示す図A diagram schematically showing the positional relationship between the vacuum heat insulating material and the injection port as a reference example. 真空断熱材の他の形状および配置態様を模式的に示す図その１Figure 1 schematically showing other shapes and arrangements of the vacuum heat insulating material 真空断熱材の他の形状および配置態様を模式的に示す図その２FIG. 2 schematically showing other shapes and arrangements of the vacuum heat insulating material

以下、実施形態について、図１から図８を参照しながら説明する。
図１に示すように、本実施形態の真空断熱材１０は、冷蔵庫２０（図４参照）の外箱の背面を形成する背板１１に取り付けられて、後述する図３に示すように発泡断熱材１７とともに冷蔵庫２０の背面側において断熱壁を形成する。なお、真空断熱材１０自体の構成は周知であるので詳細な説明は省略するが、所定の形状に形成した断熱性を有するコア部材を袋部材に収納し、袋部材の内部を真空引きした後に密封して形成されている。 Hereinafter, embodiments will be described with reference to FIGS. 1 to 8.
As shown in FIG. 1, the vacuum heat insulating material 10 of the present embodiment is attached to a back plate 11 forming the back surface of the outer box of the refrigerator 20 (see FIG. 4), and is foam-insulated as shown in FIG. 3 described later. A heat insulating wall is formed on the back side of the refrigerator 20 together with the material 17. Since the structure of the vacuum heat insulating material 10 itself is well known, detailed description thereof will be omitted. However, after the core member having heat insulating properties formed in a predetermined shape is housed in the bag member and the inside of the bag member is evacuated. It is formed in a sealed manner.

本実施形態の場合、真空断熱材１０は、図１における上下方向つまりは冷蔵庫２０の上下方向に、互いに隣り合って配置される２枚の真空断熱材１０Ａおよび真空断熱材１０Ｂで構成されている。これら真空断熱材１０Ａおよび真空断熱材１０Ｂにより構成される真空断熱材１０は、冷蔵庫２０の上下方向および左右方向において、貯蔵室１６（図４参照）の背面を覆う大きさに形成されている。 In the case of the present embodiment, the vacuum heat insulating material 10 is composed of two vacuum heat insulating materials 10A and vacuum heat insulating materials 10B arranged adjacent to each other in the vertical direction in FIG. 1, that is, in the vertical direction of the refrigerator 20. .. The vacuum heat insulating material 10 composed of the vacuum heat insulating material 10A and the vacuum heat insulating material 10B is formed in a size that covers the back surface of the storage chamber 16 (see FIG. 4) in the vertical and horizontal directions of the refrigerator 20.

真空断熱材１０Ａは、図２に示すように、冷蔵庫２０の正面から見た場合の平面視において、その外形が概ね四角形の矩形状に形成されており、平坦状に形成されている本体部１０ａと、本体部１０ａから立ち上がって形成されている壁部１０ｂと、真空断熱材１０Ｂ側の角部に形成されている面取り部１０ｃとを有している。
また、真空断熱材１０Ｂは、平面視においてその外形が概ね四角形の矩形状に形成されており、平坦状に形成されている本体部１０ａと、本体部１０ａから立ち上がって形成されている壁部１０ｂと、４隅の角部に形成されている面取り部１０ｃとを有している。 As shown in FIG. 2, the vacuum heat insulating material 10A has a substantially quadrangular outer shape in a plan view when viewed from the front of the refrigerator 20, and the main body portion 10a is formed in a flat shape. It has a wall portion 10b formed by rising from the main body portion 10a, and a chamfered portion 10c formed at a corner portion on the vacuum heat insulating material 10B side.
Further, the vacuum heat insulating material 10B is formed in a rectangular shape having a substantially quadrangular outer shape in a plan view, and is formed in a flat shape and a wall portion 10b rising from the main body portion 10a. And the chamfered portion 10c formed at the corners of the four corners.

背板１１は、冷蔵庫２０の前後方向において最も後側となる後面１１ａと、後面１１ａから立ち上がって形成されている壁面１１ｂと、背板１１において最も前方側となる前面１１ｃとにより、前面１１ｃ側が開口した概ね薄い箱状に形成されている。そして、真空断熱材１０は、基本的には本体部１０ａが後面１１ａに取り付けられ、壁部１０ｂが側面１１ｂに沿って取り付けられる。 The back plate 11 has a rear surface 11a which is the rearmost side in the front-rear direction of the refrigerator 20, a wall surface 11b formed by standing up from the rear surface 11a, and a front surface 11c which is the frontmost side of the back plate 11 so that the front surface 11c side is formed. It is formed in the shape of an open, generally thin box. Then, in the vacuum heat insulating material 10, the main body portion 10a is basically attached to the rear surface 11a, and the wall portion 10b is attached along the side surface 11b.

この背板１１には、冷蔵庫２０の上下方向の中央部であって左右の端部側に、発泡断熱材１７の原液を注入する注入口１２がそれぞれ１つずつ形成されている。この注入口１２は、詳細は後述するが、真空断熱材１０Ａの面取り部１０ｃと真空断熱材１０Ｂの面取り部１０ｃによって形成される空間部２２（図５参照）に位置して設けられている。換言すると、真空断熱材１０Ａおよび真空断熱材１０Ｂは、面取り部１０ｃが注入口１２に掛からない形状に形成されている。 The back plate 11 is formed with one injection port 12 for injecting the undiluted solution of the foamed heat insulating material 17 at the central portion in the vertical direction of the refrigerator 20 and on the left and right end sides. The injection port 12 is provided at a position in a space portion 22 (see FIG. 5) formed by the chamfered portion 10c of the vacuum heat insulating material 10A and the chamfered portion 10c of the vacuum heat insulating material 10B, which will be described in detail later. In other words, the vacuum heat insulating material 10A and the vacuum heat insulating material 10B are formed in a shape in which the chamfered portion 10c does not hang on the injection port 12.

これら真空断熱材１０および背板１１は、図３に示すように、図示下方側となる冷蔵庫２０の背面側に設けられており、左側板１３、右側板１４、図示しない天板および側板等とともに、冷蔵庫２０の外箱つまりは外殻を形成する。この外箱の内部には、貯蔵室１６を形成する内箱が収納されており、これら外箱と内箱との間に、真空断熱壁および発泡断熱材１７で構成される断熱壁が配置されている。 As shown in FIG. 3, the vacuum heat insulating material 10 and the back plate 11 are provided on the back side of the refrigerator 20 which is the lower side in the drawing, and together with the left side plate 13, the right side plate 14, the top plate and the side plate (not shown), and the like. , The outer box of the refrigerator 20, that is, the outer shell is formed. Inside the outer box, an inner box forming a storage chamber 16 is housed, and a heat insulating wall composed of a vacuum heat insulating wall and a foam heat insulating material 17 is arranged between the outer box and the inner box. ing.

冷蔵庫２０の背面側の断熱壁は、上記した真空断熱材１０Ａおよび真空断熱材１０Ｂと発泡断熱材１７とで構成されている。また、側板側の断熱壁は、それぞれ真空断熱材１３Ａ、真空断熱材１４Ａと発泡断熱材１７とで構成されている。なお、図示しない天板側および底板側にも断熱壁が設けられている。 The heat insulating wall on the back side of the refrigerator 20 is composed of the vacuum heat insulating material 10A, the vacuum heat insulating material 10B, and the foam heat insulating material 17 described above. The heat insulating wall on the side plate side is composed of the vacuum heat insulating material 13A, the vacuum heat insulating material 14A, and the foam heat insulating material 17, respectively. Insulation walls are also provided on the top plate side and the bottom plate side (not shown).

このうち、真空断熱材１０Ａおよび真空断熱材１０Ｂは、図４に示すように、互いの一部が重なるように配置されている。より詳細には、真空断熱材１０Ａおよび真空断熱材１０Ｂは、真空断熱材１０Ａの本体部１０ａと真空断熱材１０Ｂの本体部１０ａとが冷蔵庫２０の上下方向において重なるように配置されている。このとき、真空断熱材１０Ａの本体部１０ａは、真空断熱材１０Ｂの本体部１０ａよりも冷蔵庫２０の前後方向において前方側に配置されている。つまり、２枚の真空断熱材１０は、互いの一部が重なる状態で背板１１に取り付けられている。 Of these, the vacuum heat insulating material 10A and the vacuum heat insulating material 10B are arranged so as to partially overlap each other as shown in FIG. More specifically, the vacuum heat insulating material 10A and the vacuum heat insulating material 10B are arranged so that the main body 10a of the vacuum heat insulating material 10A and the main body 10a of the vacuum heat insulating material 10B overlap each other in the vertical direction of the refrigerator 20. At this time, the main body 10a of the vacuum heat insulating material 10A is arranged on the front side in the front-rear direction of the refrigerator 20 with respect to the main body 10a of the vacuum heat insulating material 10B. That is, the two vacuum heat insulating materials 10 are attached to the back plate 11 in a state where a part of the vacuum heat insulating material 10 overlaps with each other.

このとき、真空断熱材１０Ｂに重ねて配置される真空断熱材１０Ａと背板１１との間には、真空断熱材１０Ｂの厚さの分だけ隙間が生じることになる。そのため、本実施形態では、真空断熱材１０Ａと背板１１との間に、真空断熱材１０Ｂと概ね同じ厚みに形成されているシート材２１を配している。このため、真空断熱材１０Ｂは背板１１に直接的に取り付けされている一方、真空断熱材１０Ａは、背板１１との間に設けられているシート材２１を介して背板１１に間接的に取り付けられている。 At this time, a gap is formed between the vacuum heat insulating material 10A and the back plate 11 which are arranged so as to overlap the vacuum heat insulating material 10B by the thickness of the vacuum heat insulating material 10B. Therefore, in the present embodiment, the sheet material 21 formed to have substantially the same thickness as the vacuum heat insulating material 10B is arranged between the vacuum heat insulating material 10A and the back plate 11. Therefore, the vacuum heat insulating material 10B is directly attached to the back plate 11, while the vacuum heat insulating material 10A is indirectly attached to the back plate 11 via the sheet material 21 provided between the vacuum heat insulating material 10B and the back plate 11. It is attached to.

このため、真空断熱材１０の本体部１０ａと内箱との間に設けられる発泡断熱材１７の厚み（Ｌ１）よりも、注入口１２が形成されている位置における真空断熱材１０の壁部１０ｂと内箱との間に設けられる発泡断熱材１７の厚み（Ｌ２）の方が厚くなる。なお、本実施形態では、真空断熱材１０Ａおよび真空断熱材１０Ｂは、接着剤により、シート材２１あるいは背板１１に接着されている。 Therefore, the wall portion 10b of the vacuum heat insulating material 10 at the position where the injection port 12 is formed is larger than the thickness (L1) of the foamed heat insulating material 17 provided between the main body portion 10a of the vacuum heat insulating material 10 and the inner box. The thickness (L2) of the foam heat insulating material 17 provided between the inner box and the inner box is thicker. In the present embodiment, the vacuum heat insulating material 10A and the vacuum heat insulating material 10B are adhered to the sheet material 21 or the back plate 11 with an adhesive.

また、真空断熱材１０には、図５に示すように、真空断熱材１０Ａの面取り部１０ｃと真空断熱材１０Ｂの面取り部１０ｃとによって、その外縁を示す仮想線（ＣＬ１。以下単に外縁と称する）よりも内側に凹んだ空間部２２が形成されている。 Further, as shown in FIG. 5, the vacuum heat insulating material 10 has a virtual line (CL1; hereinafter simply referred to as an outer edge) indicating the outer edge of the vacuum heat insulating material 10A by the chamfered portion 10c of the vacuum heat insulating material 10A and the chamfered portion 10c of the vacuum heat insulating material 10B. ) Is formed, and the space portion 22 recessed inward is formed.

より具体的には、空間部２２は、外縁と各面取り部１０ｃとによって、外縁から所定の角度（α）で内側に傾斜するように形成されている面取り部１０ｃ間に、概ね三角形状に形成されている。このとき、αは、４５度ではない角度、より厳密には、４５度よりも大きい角度に形成されている。以下、αを、面取り部１０ｃの角度とも称する。 More specifically, the space portion 22 is formed in a substantially triangular shape between the chamfered portions 10c formed so as to incline inward from the outer edge at a predetermined angle (α) by the outer edge and each chamfered portion 10c. Has been done. At this time, α is formed at an angle other than 45 degrees, more strictly, at an angle larger than 45 degrees. Hereinafter, α is also referred to as an angle of the chamfered portion 10c.

このため、面取り部１０ｃは、最も内部側となる位置から外縁までの距離（Ｗ１）よりも、真空断熱材１０Ａと真空断熱材１０Ｂとが重なっている範囲の仮想的な中心線（ＣＬ２）と各面取り部１０ｃの上下方向の端部までとの間の距離（Ｈ１）の方が大きくなっている。つまり、面取り部１０ｃ間に形成される空間部２２は、外縁に沿った部位を底辺とし、内側に傾斜している部位を斜辺とすると、底辺よりも斜辺の方が短い概ね二等辺三角形に形成されている。 Therefore, the chamfered portion 10c has a virtual center line (CL2) in the range where the vacuum heat insulating material 10A and the vacuum heat insulating material 10B overlap, rather than the distance (W1) from the position on the innermost side to the outer edge. The distance (H1) between each chamfered portion 10c and the end portion in the vertical direction is larger. That is, the space portion 22 formed between the chamfered portions 10c is formed into an approximately isosceles triangle whose hypotenuse is shorter than the base, assuming that the portion along the outer edge is the base and the portion inclined inward is the hypotenuse. Has been done.

そして、この空間部２２内に、注入口１２の全部位置している。なお、注入口１２は、少なくともその一部が空間部２２内に位置していればよく、より好ましくはその全部が空間部２２内に位置しているとよい。 Then, all of the injection ports 12 are located in the space portion 22. It is sufficient that at least a part of the injection port 12 is located in the space portion 22, and more preferably all of the injection port 12 is located in the space portion 22.

ここで、図６に参考例として示す他の形状の空間部２２と対比してみる。図６の場合、真空断熱材１１０の面取り部分は、外縁までの距離（Ｗ２）が、中心からの距離（Ｈ２）よりも長くなっている。つまり、図６に示す空間部１２２は、面取り部分の角度が４５度よりも小さく形成されている。 Here, let's compare it with the space portion 22 having another shape shown as a reference example in FIG. In the case of FIG. 6, the chamfered portion of the vacuum heat insulating material 110 has a longer distance (W2) to the outer edge than the distance (H2) from the center. That is, the space portion 122 shown in FIG. 6 is formed so that the angle of the chamfered portion is smaller than 45 degrees.

この場合、注入口１１２の周囲には、冷蔵庫２０の左右方向において真空断熱材１０が配置されていない領域（Ｘ）が、図５に示す空間部２２と比べると大きく存在することになる。換言すると、図６に示す空間部１２２の場合、断熱性が低下する部位が冷蔵庫２０の左右方向において大きくなる。 In this case, a region (X) in which the vacuum heat insulating material 10 is not arranged in the left-right direction of the refrigerator 20 is larger than the space portion 22 shown in FIG. 5 around the injection port 112. In other words, in the case of the space portion 122 shown in FIG. 6, the portion where the heat insulating property is lowered becomes large in the left-right direction of the refrigerator 20.

これに対して、図５に示す本実施形態の空間部２２は、αを４５度よりも大きい角度に形成しているので、冷蔵庫２０の左右方向において真空断熱材１０が配設されない部分の長さ（Ｗ１）を極力短くすることが可能となっている。
以上説明した実施形態によれば、次のような効果を得ることができる。 On the other hand, in the space portion 22 of the present embodiment shown in FIG. 5, since α is formed at an angle larger than 45 degrees, the length of the portion where the vacuum heat insulating material 10 is not arranged in the left-right direction of the refrigerator 20. It is possible to shorten the temperature (W1) as much as possible.
According to the embodiment described above, the following effects can be obtained.

実施形態の冷蔵庫２０は、真空断熱材１０および発泡断熱材１７で構成されている断熱壁と、当該冷蔵庫２０の背面を形成するとともに発泡断熱材１７の原液を注入する注入口１２が形成されている背板１１と、を備え、背板１１には、注入口１２が、当該冷蔵庫２０の上下方向の中央部であって左右の端部側に１つずつ形成されており、背板１１に取り付けられる真空断熱材１０は、当該冷蔵庫２０の上下方向に分割された２枚で構成されているとともに、隣り合う側の角部に面取り部１０ｃが形成されており、注入口１２は、隣り合う真空断熱材１０の面取り部１０ｃ間に形成される空間部２２に位置している。 In the refrigerator 20 of the embodiment, a heat insulating wall composed of the vacuum heat insulating material 10 and the foam heat insulating material 17 and an injection port 12 for forming the back surface of the refrigerator 20 and injecting the undiluted solution of the foam heat insulating material 17 are formed. A back plate 11 is provided, and an injection port 12 is formed in the back plate 11 at the center of the refrigerator 20 in the vertical direction, one on each of the left and right end sides. The vacuum heat insulating material 10 to be attached is composed of two pieces divided in the vertical direction of the refrigerator 20, and chamfered portions 10c are formed at the corners on adjacent sides, and the injection ports 12 are adjacent to each other. It is located in the space portion 22 formed between the chamfered portions 10c of the vacuum heat insulating material 10.

注入口１２を背板１１に設ける場合、発泡断熱材１７を充填するためには、注入口１２を避けるように真空断熱材１０を配置する必要がある。ただし、真空断熱材１０は断熱壁を構成する部材であるため、注入口１２を避けるように配置すると、貯蔵室１６の背面側を覆う面積が少なくなり、断熱性が低下するおそれがある。 When the injection port 12 is provided on the back plate 11, the vacuum heat insulating material 10 needs to be arranged so as to avoid the injection port 12 in order to fill the foam heat insulating material 17. However, since the vacuum heat insulating material 10 is a member constituting the heat insulating wall, if the vacuum heat insulating material 10 is arranged so as to avoid the injection port 12, the area covering the back surface side of the storage chamber 16 may be reduced, and the heat insulating property may be deteriorated.

この場合、真空断熱材１０に注入口１２を避けるように孔部や凹部を設けることで断熱性が低下することを低減できるものと考えられるが、本実施形態のように注入口１２を冷蔵庫２０の上下方向の中央部に設ける場合には、真空断熱材１０の製造が困難である。 In this case, it is considered that the decrease in heat insulating property can be reduced by providing the vacuum heat insulating material 10 with holes or recesses so as to avoid the injection port 12, but the injection port 12 is used as the refrigerator 20 as in the present embodiment. When it is provided in the central portion in the vertical direction of the vacuum heat insulating material 10, it is difficult to manufacture the vacuum heat insulating material 10.

すなわち、真空断熱材１０は上記したようにコア部材を袋部材に収納して形成されているため、注入口１２を避けるためにコア部材に孔部や凹部を形成しても、袋部材によってその孔部や凹部が覆われてしまい、注入口１２が塞がれるおそれがある。また、真空断熱材１０の外縁に凹部を設ける構成としても、凹部を覆っている袋部材を注入口１２を避けるように折り曲げることが困難であり、やはり製造に難がある。 That is, since the vacuum heat insulating material 10 is formed by accommodating the core member in the bag member as described above, even if a hole or a recess is formed in the core member in order to avoid the injection port 12, the bag member causes the vacuum heat insulating material 10 to be formed. The holes and recesses may be covered and the injection port 12 may be blocked. Further, even if the recess is provided on the outer edge of the vacuum heat insulating material 10, it is difficult to bend the bag member covering the recess so as to avoid the injection port 12, which is also difficult to manufacture.

そこで、本実施形態では、真空断熱材１０の角部に面取り部１０ｃを形成している。この場合、面取り部１０ｃは真空断熱材１０の角部を三角形に切り取ったような態様となっているため、面取り部１０ｃを設けたような形状のコア部材を用い、袋部材に収納して真空引きした後、袋部材の角部を単純に折り曲げることにより、面取り部１０ｃに掛からないようにすることができる。すなわち、真空断熱材１０に面取り部１０ｃを容易に形成することができる。 Therefore, in the present embodiment, the chamfered portion 10c is formed at the corner portion of the vacuum heat insulating material 10. In this case, since the chamfered portion 10c has a form in which the corner portion of the vacuum heat insulating material 10 is cut out in a triangular shape, a core member having a shape such that the chamfered portion 10c is provided is used and stored in a bag member for vacuum. After pulling, the corner portion of the bag member is simply bent so that the chamfered portion 10c is not caught. That is, the chamfered portion 10c can be easily formed on the vacuum heat insulating material 10.

ところで、注入口１２が上下方向の中央部にある場合には、真空断熱材１０の角部に面取り部１０ｃを設けた場合には１枚の真空断熱材１０では背面側の全域を覆うことができなくなる。そのため、少なくとももう１枚の真空断熱材１０が必要になる。この場合、もう一枚の真空断熱材１０側が直線状であると、具体的には図６における一方の発泡断熱材１７に面取り部１０ｃが形成されていない状態であると、断熱材で覆われない領域が大きくなって断熱性が低下する。換言すると、真空断熱材１０による被覆率が低下して断熱性が低下する。 By the way, when the injection port 12 is located in the central portion in the vertical direction, when the chamfered portion 10c is provided at the corner portion of the vacuum heat insulating material 10, one vacuum heat insulating material 10 may cover the entire area on the back surface side. become unable. Therefore, at least another vacuum heat insulating material 10 is required. In this case, if the other vacuum heat insulating material 10 side is linear, specifically, if the chamfered portion 10c is not formed on one of the foam heat insulating materials 17 in FIG. 6, it is covered with the heat insulating material. The area that does not exist becomes large and the heat insulating property decreases. In other words, the coverage of the vacuum heat insulating material 10 is lowered, and the heat insulating property is lowered.

そこで、本実施形態では、２枚の真空断熱材１０を用いるとともに、隣り合う側の角部にそれぞれ面取り部１０ｃを形成し、互いの面取り部１０ｃが対向するように配置している。これにより、図５示したように、真空断熱材１０で覆われない領域が大きくなることを抑制することができる。すなわち、真空断熱材１０による被覆率が低下することを抑制できる。 Therefore, in the present embodiment, the two vacuum heat insulating materials 10 are used, and the chamfered portions 10c are formed at the corners on the adjacent sides, and the chamfered portions 10c are arranged so as to face each other. As a result, as shown in FIG. 5, it is possible to prevent the region not covered by the vacuum heat insulating material 10 from becoming large. That is, it is possible to suppress a decrease in the coverage of the vacuum heat insulating material 10.

したがって、断熱性能が低下することを抑制しつつ、発泡断熱材１７の注入口１２を塞ぐこともない冷蔵庫２０を提供することができる。この場合、上記したように面取り部１０ｃの形成は容易であるため、真空断熱材１０の製造も容易である。
また、面取り部１０ｃは、面取り角度（α）が４５度ではない角度、本実施形態においては４５よりも大きい角度に形成されている。これにより、冷蔵庫２０の左右方向において、真空断熱材１０で覆われていない領域を極力小さくすることができる。 Therefore, it is possible to provide the refrigerator 20 that does not block the injection port 12 of the foamed heat insulating material 17 while suppressing the deterioration of the heat insulating performance. In this case, since the chamfered portion 10c is easily formed as described above, the vacuum heat insulating material 10 is also easy to manufacture.
Further, the chamfered portion 10c is formed at an angle at which the chamfering angle (α) is not 45 degrees, which is larger than 45 in the present embodiment. As a result, the region not covered by the vacuum heat insulating material 10 can be made as small as possible in the left-right direction of the refrigerator 20.

この場合、注入口１２が冷蔵庫２０の左右の端部に形成されていること、および、上記したように注入口１２が形成されている位置における発泡断熱材１７の厚み（Ｌ２）の方が厚いことから、冷蔵庫２０の左右方向において真空断熱材１０により覆われる領域を多くできれば、注入口１２を避けるように真空断熱材１０を配置する構成であっても、断熱性が過度に低下してしまうことを抑制することができる。 In this case, the injection port 12 is formed at the left and right ends of the refrigerator 20, and the thickness (L2) of the foam heat insulating material 17 at the position where the injection port 12 is formed is thicker as described above. Therefore, if the area covered by the vacuum heat insulating material 10 can be increased in the left-right direction of the refrigerator 20, the heat insulating property will be excessively lowered even if the vacuum heat insulating material 10 is arranged so as to avoid the injection port 12. Can be suppressed.

このような形状の面取り部１０ｃは、注入口１２が位置する空間部２２を形成する面取り部１０ｃを、冷蔵庫２０の上下方向における長さ（Ｈ１）が左右方向における長さ（Ｗ１）よりも長く形成することによって実現することができる。
また、２枚の真空断熱材１０は、互いの一部が重なる状態で背板１１に取り付けられている。これにより、貯蔵室１６の背面側において真空断熱材１０で覆われない部位を無くすことができ、断熱性が低下することを抑制できる。 In the chamfered portion 10c having such a shape, the length (H1) of the chamfered portion 10c forming the space portion 22 in which the injection port 12 is located in the vertical direction of the refrigerator 20 is longer than the length (W1) in the horizontal direction. It can be realized by forming.
Further, the two vacuum heat insulating materials 10 are attached to the back plate 11 in a state where a part of the vacuum heat insulating material 10 overlaps with each other. As a result, it is possible to eliminate the portion of the back surface side of the storage chamber 16 that is not covered with the vacuum heat insulating material 10, and it is possible to suppress the deterioration of the heat insulating property.

このとき、２枚の真空断熱材１０のうち一方の真空断熱材１０Ｂは、背板１１に直接的に取り付けられており、他方の真空断熱材１０Ａは、背板１１との間に設けられているシート材２１を介して背板１１に取り付けられている。これにより、真空断熱材１０を重ねて配置する場合であっても、重なる部位の近傍に隙間が生じて断熱性が低下するおそれを低減することができる。 At this time, one of the two vacuum heat insulating materials 10 is directly attached to the back plate 11, and the other vacuum heat insulating material 10A is provided between the back plate 11 and the back plate 11. It is attached to the back plate 11 via the sheet material 21. As a result, even when the vacuum heat insulating materials 10 are arranged in an overlapping manner, it is possible to reduce the possibility that a gap is generated in the vicinity of the overlapping portion and the heat insulating property is deteriorated.

注入口１２は、その全体が空間部２２内に位置している。換言すると、空間部２２は、冷蔵庫２０の左右方向および上下方向において、注入口１２が収まる大きさに形成されている。これにより、冷蔵庫２０の左右方向および上下方向において、断熱性が低下することを抑制できる。 The entire inlet 12 is located in the space 22. In other words, the space portion 22 is formed so as to accommodate the injection port 12 in the left-right direction and the up-down direction of the refrigerator 20. As a result, it is possible to suppress deterioration of the heat insulating property in the left-right direction and the up-down direction of the refrigerator 20.

実施形態では２枚の真空断熱材１０Ａと真空断熱材１０Ｂとで構成した断熱壁を例示したが、真空断熱材１０に重ねて配置される真空断熱材１０をさらに備える構成とすることもできる。例えば図７に示すように、真空断熱材１０Ａと真空断熱材１０Ｂとを隣り合わせて、つまりは、重ならないように配置し、真空断熱材１０Ａと真空断熱材１０Ｂとが隣接する部位を覆うように、さらに真空断熱材１０Ｃを設ける構成とすることができる。 In the embodiment, the heat insulating wall composed of the two vacuum heat insulating materials 10A and the vacuum heat insulating material 10B is illustrated, but the vacuum heat insulating material 10 arranged on the vacuum heat insulating material 10 may be further provided. For example, as shown in FIG. 7, the vacuum heat insulating material 10A and the vacuum heat insulating material 10B are arranged next to each other, that is, so as not to overlap each other, so that the vacuum heat insulating material 10A and the vacuum heat insulating material 10B cover the adjacent portion. Further, the vacuum heat insulating material 10C can be provided.

これにより、真空断熱材１０Ａと真空断熱材１０Ｂとの間が真空断熱材１０Ｃにより覆われ、断熱性を確保することができる。また、真空断熱材１０Ｃは、少なくとも真空断熱材１０Ａと真空断熱材１０Ｂとの間を覆う形状とすることができるし、例えば図示下方側が冷凍温度帯の貯蔵室１６である場合、冷凍温度帯の貯蔵室１６の背面も覆う形状とすることもできる。これにより、相対的に高い断熱性が必要とされる冷凍温度帯の貯蔵室１６の背面側において、断熱性を確保することができる。 As a result, the space between the vacuum heat insulating material 10A and the vacuum heat insulating material 10B is covered with the vacuum heat insulating material 10C, and the heat insulating property can be ensured. Further, the vacuum heat insulating material 10C may have a shape that covers at least between the vacuum heat insulating material 10A and the vacuum heat insulating material 10B. The shape may also cover the back surface of the storage chamber 16. As a result, the heat insulating property can be ensured on the back side of the storage chamber 16 in the freezing temperature zone where relatively high heat insulating property is required.

実施形態では真空断熱材１０を単純に重ねる構成を例示したが、図８に示すように、真空断熱材１０Ａおよび真空断熱材１０Ｂの端部を斜めに形成し、その傾斜が互いに逆になるように配置することで、斜めに形成した端部同士を重ねる構成とすることもできる。 In the embodiment, the configuration in which the vacuum heat insulating materials 10 are simply overlapped is illustrated, but as shown in FIG. 8, the ends of the vacuum heat insulating material 10A and the vacuum heat insulating material 10B are formed obliquely so that their inclinations are opposite to each other. By arranging the heat rods at the same time, the diagonally formed ends can be overlapped with each other.

実施形態では、真空断熱材１０Ａについては真空断熱材１０Ｂ側の角部にのみ面取り部１０ｃを形成した例を示したが、真空断熱材１０Ｂと同様に、矩形状の４隅の角部に面取り部１０ｃを形成することもできる。これにより、真空断熱材１０Ａおよび真空断熱材１０Ｂは上下方向を問わずに背板１１に取り付けることが可能となり、取り付けミスを防止することができるとともに、上下方向を問わないことによる作業の簡略化および効率化を図ることができる。 In the embodiment, for the vacuum heat insulating material 10A, an example in which the chamfered portion 10c is formed only at the corner portion on the vacuum heat insulating material 10B side is shown, but like the vacuum heat insulating material 10B, the chamfered portion is chamfered at the four corners of the rectangular shape. The portion 10c can also be formed. As a result, the vacuum heat insulating material 10A and the vacuum heat insulating material 10B can be attached to the back plate 11 regardless of the vertical direction, preventing mounting mistakes and simplifying the work by not using the vertical direction. And efficiency can be improved.

実施形態では側板側の断熱壁を真空断熱材１０と発泡断熱材１７とで形成する例を示したが、側板側の断熱壁は、真空断熱材１０のみで構成することもできる。 In the embodiment, an example in which the heat insulating wall on the side plate side is formed by the vacuum heat insulating material 10 and the foam heat insulating material 17, but the heat insulating wall on the side plate side can be composed of only the vacuum heat insulating material 10.

各実施形態は、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。これら新規な実施形態は、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。本態様およびその変形は、発明の範囲および要旨に含まれるとともに、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。 Each embodiment is presented as an example and is not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. This aspect and its modifications are included in the scope and gist of the invention, as well as in the scope of the invention described in the claims and the equivalent scope thereof.

図面中、１０、１０Ａ〜１０Ｃは真空断熱材、１０ｃは面取り部、１１は背板、１２は注入口、１７は発泡断熱材、２０は冷蔵庫、２１はシート材、２２は空間部を示す。 In the drawings, 10, 10A to 10C are vacuum heat insulating materials, 10c is a chamfered part, 11 is a back plate, 12 is an injection port, 17 is a foam heat insulating material, 20 is a refrigerator, 21 is a sheet material, and 22 is a space part.

Claims (8)

貯蔵室を形成する内箱と外殻を形成する外箱との間に設けられ、真空断熱材および発泡断熱材で構成されている断熱壁と、
前記外箱の背面を形成し、前記真空断熱材が取り付けられるとともに前記発泡断熱材の原液を注入する注入口が形成されている背板と、を備え、
前記背板は、最も後側となる後面と、当該後面の両側から傾斜するように立ち上がって形成されている壁面と、背板において最も前方側となる前面とにより構成されており、
前記背板には、前記注入口が、当該冷蔵庫の上下方向の中央部であって左右の端部側に１つずつ形成されており、
前記背板に取り付けられる前記真空断熱材は、当該冷蔵庫の上下方向に隣り合って配置される２枚で構成されているとともに、隣り合う側の角部であって、平面視において前記壁面に対応する位置に面取り部が形成されており、
前記注入口は、隣り合う前記真空断熱材の前記面取り部間に形成される空間部であって、平面視において前記壁面に対応する位置に設けられている冷蔵庫。 A heat insulating wall provided between the inner box forming the storage chamber and the outer box forming the outer shell and composed of the vacuum heat insulating material and the foam heat insulating material,
A back plate forming the back surface of the outer box, to which the vacuum heat insulating material is attached and an injection port for injecting the stock solution of the foamed heat insulating material is provided.
The back plate is composed of a rear surface which is the rearmost side, a wall surface which is formed so as to rise from both sides of the rear surface, and a front surface which is the front side of the back plate.
The back plate is formed with one inlet at the center of the refrigerator in the vertical direction and one at each of the left and right ends.
The vacuum heat insulating material attached to the back plate is composed of two sheets arranged adjacent to each other in the vertical direction of the refrigerator, and is a corner portion on the adjacent side, which corresponds to the wall surface in a plan view. A chamfered part is formed at the position to be
The injection port is a space portion formed between the chamfered portions of the adjacent vacuum heat insulating materials, and is a refrigerator provided at a position corresponding to the wall surface in a plan view. 前記面取り部の面取り角度が４５度ではない請求項１記載の冷蔵庫。 Refrigerator I請Motomeko 1, wherein such a chamfer angle of 45 degrees of the chamfered portion. 前記面取り部は、当該冷蔵庫の上下方向における長さが、当該冷蔵庫の左右方向における長さよりも長く形成されている請求項１または２記載の冷蔵庫。 The chamfered portion has a length in the vertical direction of the refrigerator, the refrigerator of the refrigerator length請Motomeko 1 or 2, wherein that are formed to be longer than in the lateral direction. ２枚の前記真空断熱材は、互いの一部が重なる状態で前記背板に取り付けられている請求項１から３のいずれか一項記載の冷蔵庫。 Two said vacuum thermal insulator, a refrigerator according to any one claim from請Motomeko 1 that are attached to the back plate while partially overlapping with each other 3. ２枚の前記真空断熱材のうち一方の前記真空断熱材は、前記背板に直接的に取り付けられており、他方の前記真空断熱材は、前記背板との間に設けられているシート材を介して前記背板に取り付けられている請求項４記載の冷蔵庫。 One of the two vacuum heat insulating materials is directly attached to the back plate, and the other vacuum heat insulating material is a sheet material provided between the back plate and the vacuum heat insulating material. refrigerator請Motomeko 4 wherein that attached to the back plate via. 前記真空断熱材は、平面視において矩形状に形成されており、４隅に前記面取り部が形成されている請求項１から５のいずれか一項記載の冷蔵庫。 The vacuum heat insulating material is formed in a rectangular shape in plan view, 4 refrigerator according to any one claim of the chamfer in the corner from請Motomeko 1 that have been formed is 5. 前記注入口は、全体が前記空間部内に位置している請求項１から６のいずれか一項記載の冷蔵庫。 The inlet, refrigerator overall any one claim of the from請Motomeko 1 that is located in the space portion 6. 前記真空断熱材に重ねて配置される真空断熱材をさらに備える請求項１から７のいずれか一項記載の冷蔵庫。 Refrigerator according to one of the vacuum請Motomeko 1 to 7 Ru further comprising a vacuum heat insulating material which is arranged to overlap the insulation.
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