JP5784380B2 - refrigerator - Google Patents

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JP5784380B2
JP5784380B2 JP2011133434A JP2011133434A JP5784380B2 JP 5784380 B2 JP5784380 B2 JP 5784380B2 JP 2011133434 A JP2011133434 A JP 2011133434A JP 2011133434 A JP2011133434 A JP 2011133434A JP 5784380 B2 JP5784380 B2 JP 5784380B2
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heat insulating
insulating material
cabinet
refrigerator
ceiling wall
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JP2013002704A (en
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賢治 今久保
賢治 今久保
正俊 佐藤
正俊 佐藤
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Toshiba Corp
Toshiba Lifestyle Products and Services Corp
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Toshiba Corp
Toshiba Lifestyle Products and Services Corp
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Description

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

近年、冷蔵庫は食生活の多様化により庫内収納容積の大型化が望まれているとともに、省電力化も強く望まれている。冷蔵庫の省電力化のためにキャビネットの断熱性能を向上させることが考えられる。キャビネットは、外箱と、内箱と、その間に発泡充填したウレタンフォームなどの断熱材とで構成されており、断熱材を厚くすれば断熱性能が向上するが、冷蔵庫の設置スペースに対する庫内収納容積を拡大するには断熱材を薄くする必要がある。   In recent years, refrigerators are desired to have a large storage capacity due to diversification of eating habits, and power saving is also strongly desired. It is conceivable to improve the heat insulation performance of the cabinet in order to save power in the refrigerator. The cabinet is composed of an outer box, an inner box, and a heat insulating material such as urethane foam filled in between. The thicker the heat insulating material, the better the heat insulating performance, but it can be stored in the refrigerator space. In order to increase the volume, it is necessary to make the heat insulating material thinner.

よって、庫内収納容積の大型化と、省電力化の両者の要望を満たすためには、断熱材自体の断熱性能を高くすることが有効であり、その手段の一つとしては、ウレタンフォームよりも断熱性能の高いグラスウールなどをコア材とした真空断熱材を、キャビネットの天井面や背面、または側面の発泡ウレタンフォーム内に埋設することが提案されている（例えば、下記特許文献１）。   Therefore, it is effective to increase the heat insulation performance of the heat insulating material itself in order to satisfy both demands for larger storage capacity and power saving. In addition, it has been proposed to embed a vacuum heat insulating material having glass wool or the like having a high heat insulating performance as a core material in a foamed urethane foam on the ceiling surface, back surface, or side surface of the cabinet (for example, Patent Document 1 below).

特開２００９−２４９２２号JP 2009-24922

しかしながら、上記従来の冷蔵庫構成は、真空断熱材を外箱に貼り付けた状態で内箱と外箱との間に断熱材を発泡充填するため、キャビネットの天井壁に上方へ陥没する凹部が形成されていると、当該凹部と真空断熱材との間において断熱材を発泡充填する際の液回りが悪くなり断熱材に欠肉が生じやすくなり、所望の断熱性能が得られないおそれがある。   However, in the conventional refrigerator configuration, since the heat insulating material is foam-filled between the inner box and the outer box with the vacuum heat insulating material attached to the outer box, a concave portion that sinks upward is formed in the ceiling wall of the cabinet. If it is, the liquid around the foaming and filling of the heat insulating material between the concave portion and the vacuum heat insulating material becomes poor, and the heat insulating material is liable to be thin, and the desired heat insulating performance may not be obtained.

本発明は、上記事情を考慮してなされたものであり、キャビネットの天井壁に発泡充填された断熱材内に真空断熱材を配設した冷蔵庫において、天井壁に庫内側から上方へ陥没する凹部を形成しても発泡充填した断熱材に欠肉が生じにくい冷蔵庫を提供することを目的とする。   The present invention has been made in consideration of the above circumstances, and in a refrigerator in which a vacuum heat insulating material is disposed in a heat insulating material foam-filled in a ceiling wall of a cabinet, a concave portion that sinks upward from the inside of the cabinet to the ceiling wall. An object of the present invention is to provide a refrigerator in which the foam-filled heat insulating material is less prone to lack of thickness even when formed.

本実施形態の冷蔵庫は、外箱と内箱との間に断熱材を発泡充填したキャビネットと、前記キャビネットの天井壁内に設けた真空断熱材と、前記キャビネットの天井壁の庫内側から上方へ陥没する凹部とを備え、前記真空断熱材が前記凹部の上方位置を前記断熱材を発泡充填する際の液回りを改善するように避けて配置されていることを特徴とする。 The refrigerator of the present embodiment includes a cabinet in which a heat insulating material is foam-filled between an outer box and an inner box, a vacuum heat insulating material provided in the ceiling wall of the cabinet, and an upper side from the inside of the ceiling wall of the cabinet. And the vacuum heat insulating material is disposed so as to avoid an upper position of the concave portion so as to improve a liquid periphery when the heat insulating material is foam-filled .

本発明の一実施形態に係る冷蔵庫の断面図である。It is sectional drawing of the refrigerator which concerns on one Embodiment of this invention. 図１の要部拡大図である。It is a principal part enlarged view of FIG. 図１の冷蔵庫の冷凍サイクルを示す図である。It is a figure which shows the refrigerating cycle of the refrigerator of FIG. 図１の冷蔵庫のキャビネットに配設された放熱パイプと真空断熱材を示す図である。It is a figure which shows the heat radiating pipe and vacuum heat insulating material which were arrange | positioned at the cabinet of the refrigerator of FIG.

以下、図面に基づいて本発明の一実施形態について説明する。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

本実施形態に係る冷蔵庫１０は、図１に示すように、鋼板からなる外箱１２と貯蔵空間を形成する内箱１４との間に断熱空間を設けたキャビネット１６を備える。   As shown in FIG. 1, the refrigerator 10 according to the present embodiment includes a cabinet 16 provided with a heat insulating space between an outer box 12 made of a steel plate and an inner box 14 forming a storage space.

内箱１４の内方に形成された貯蔵空間は、断熱仕切壁１７によって上方の冷蔵空間２０と下方の冷凍空間４０とに区画されている。   The storage space formed inside the inner box 14 is partitioned into an upper refrigeration space 20 and a lower refrigeration space 40 by a heat insulating partition wall 17.

冷蔵空間２０は、冷蔵温度（例えば、２〜３℃）に冷却される空間であって、内部がさらに仕切壁２１によって上下に区画され、仕切壁２１の上方に複数段の載置棚を設けた冷蔵室２２が設けられ、仕切壁２１の下方に引出式の収納容器２６を配置する野菜室２４が設けられている。   The refrigerated space 20 is a space that is cooled to a refrigeration temperature (for example, 2 to 3 ° C.), and the interior is further divided vertically by a partition wall 21, and a plurality of mounting shelves are provided above the partition wall 21. A refrigerator compartment 22 is provided, and a vegetable compartment 24 in which a drawer-type storage container 26 is arranged below the partition wall 21 is provided.

冷蔵室２２の天井面を形成するキャビネット１６の天井壁１６ｃには、図１に示すように、冷蔵室２２の前後方向の中央部より前方に寄った位置に庫内側から上方（つまり、断熱空間側）へ陥没する凹部３０が形成されており、その凹部３０内に照明装置３１が収納されている。   As shown in FIG. 1, the ceiling wall 16 c of the cabinet 16 that forms the ceiling surface of the refrigerator compartment 22 has an upper side (that is, a heat insulating space) at a position closer to the front than the central portion in the front-rear direction of the refrigerator compartment 22. A concave portion 30 that is recessed to the side) is formed, and the illumination device 31 is accommodated in the concave portion 30.

図２に示すように、凹部３０の後壁には上方に行くほど前方に傾斜する傾斜面３３が設けられ、凹部３０の前壁には上方に行くほど後方に傾斜する傾斜面３４が設けられている。また、凹部３０の内底面には冷蔵室２２側へ向けて突出し冷蔵庫１０の幅方向へ延びる突条をなした補強リブ３５が設けられている。   As shown in FIG. 2, the rear wall of the recess 30 is provided with an inclined surface 33 that is inclined forward as it goes upward, and the front wall of the recess 30 is provided with an inclined surface 34 that is inclined backward as it goes upward. ing. In addition, a reinforcing rib 35 is provided on the inner bottom surface of the recess 30, which has a protrusion that protrudes toward the refrigerator compartment 22 and extends in the width direction of the refrigerator 10.

照明装置３１は、ＬＥＤ等の光源が配設された回路基板を備え、冷蔵庫１０を制御するための制御基板（不図示）に配線接続されており、冷蔵室２２の扉２３の開扉時に制御基板から供給される駆動電源によって光源が点灯するように制御される。本実施形態では照明装置３１が駆動電源により発熱する発熱部材を構成する。このような照明装置３１は、ネジ止あるいはツメ嵌合等の適宜の係止手段により凹部３０内に固定されている。   The lighting device 31 includes a circuit board on which a light source such as an LED is disposed, and is wired to a control board (not shown) for controlling the refrigerator 10 and is controlled when the door 23 of the refrigerator compartment 22 is opened. Control is performed so that the light source is lit by a driving power source supplied from the substrate. In this embodiment, the illuminating device 31 constitutes a heat generating member that generates heat from the drive power supply. Such an illuminating device 31 is fixed in the recess 30 by appropriate locking means such as screwing or claw fitting.

照明装置３１が収納された凹部３０は、その下面開口部がシェード３２で閉塞されている。シェード３２は、シボ加工等を施すことで表面が凹凸に設けられた透明性の高いアクリル樹脂等の成形体であり、照明装置３１の光源からの光を拡散して冷蔵室２２内に照射させる。   The recess 30 in which the lighting device 31 is housed is closed at its lower surface opening by a shade 32. The shade 32 is a molded body of highly transparent acrylic resin or the like whose surface is provided with irregularities by applying a texture process or the like, and diffuses light from the light source of the lighting device 31 to irradiate the refrigerator compartment 22. .

断熱仕切壁１７を介して野菜室２４の下方に配置した冷凍空間４０は、冷凍温度（例えば、−１８℃以下）に冷却される空間であって、自動製氷機を備えた製氷室４２と小型冷凍室（不図示）とが左右に併設され、その下方に冷凍室４６が設けられている。   A freezing space 40 disposed below the vegetable compartment 24 via the heat insulating partition wall 17 is a space cooled to a freezing temperature (for example, −18 ° C. or lower), and is small in size with an ice making room 42 equipped with an automatic ice making machine. Freezer compartments (not shown) are provided on the left and right, and a freezer compartment 46 is provided below them.

冷蔵空間２０の後部には、冷蔵空間２０内の空気を冷却する冷蔵用冷却器５２と冷蔵用冷却器５２で冷却された冷気を冷蔵室２２及び野菜室２４へ送風する冷蔵用送風ファン５３が設けられている。また、冷凍空間４０の後部には、冷凍空間４０内の空気を冷却する冷凍用冷却器５４と冷凍用冷却器５４で冷却された冷気を製氷室４２と小型冷凍室と冷凍室４６へ送風する冷凍用送風ファン５５が設けられている。   A refrigeration cooler 52 that cools the air in the refrigeration space 20 and a refrigeration blower fan 53 that blows the cold air cooled by the refrigeration cooler 52 to the refrigeration chamber 22 and the vegetable compartment 24 are provided at the rear of the refrigeration space 20. Is provided. Further, at the rear part of the freezing space 40, a freezing cooler 54 that cools the air in the freezing space 40, and the cold air cooled by the freezing cooler 54 is sent to the ice making chamber 42, the small freezing chamber, and the freezing chamber 46. A refrigeration blower fan 55 is provided.

冷蔵用冷却器５２及び冷凍用冷却器５４は、キャビネット１６の背面下部に設けられた機械室１９内に収納された圧縮機５１や凝縮器５６とともに冷凍サイクル５０を構成する。   The refrigeration cooler 52 and the refrigeration cooler 54 constitute a refrigeration cycle 50 together with a compressor 51 and a condenser 56 housed in a machine room 19 provided at the lower back of the cabinet 16.

冷凍サイクル５０は、図３に示すように、高温高圧のガス状の冷媒を吐出する圧縮機５１と、圧縮機５１から吐出されるガス状の冷媒を受けて放熱液化する凝縮器５６と、凝縮器５６の出口側に設けられ冷媒流路を切り換える切替弁５７と、冷蔵用冷却器５２及び冷凍用冷却器５４と、これらの冷却器５２，５４のための絞り手段としての冷蔵用減圧装置５８及び冷凍用減圧装置５９と、逆止弁６０とを備え、これらを冷媒パイプによって配管接続することで、圧縮機５１から吐出された冷媒を循環させて冷蔵用冷却器５２及び冷凍用冷却器５４を冷却する。   As shown in FIG. 3, the refrigeration cycle 50 includes a compressor 51 that discharges a high-temperature and high-pressure gaseous refrigerant, a condenser 56 that receives the gaseous refrigerant discharged from the compressor 51 and liquefies heat, and a condenser A switching valve 57 provided on the outlet side of the cooler 56 for switching the refrigerant flow path, a refrigerating cooler 52 and a refrigerating cooler 54, and a refrigerating decompression device 58 as a throttling means for the coolers 52 and 54. The refrigerating cooler 52 and the refrigerating cooler 54 are circulated by circulating the refrigerant discharged from the compressor 51 by connecting them with a refrigerant pipe. Cool down.

上記構成の冷蔵庫１０において、キャビネット１６は、外箱１２の断熱空間側に放熱パイプ６１，６２と真空断熱材１１，１５とを配設した状態で発泡断熱材１３によって外箱１２と内箱１４とが一体化されている。   In the refrigerator 10 having the above configuration, the cabinet 16 includes the outer box 12 and the inner box 14 by the foam heat insulating material 13 in a state where the heat radiating pipes 61 and 62 and the vacuum heat insulating materials 11 and 15 are disposed on the heat insulating space side of the outer box 12. And are integrated.

詳細には、放熱パイプ６１，６２は、凝縮器５６の出口側と切替弁５７の入口とを接続する冷媒パイプであり、減圧装置５８，５９で減圧される前の液状冷媒が流通する高温側冷媒パイプの一部を構成し、外箱１２の断熱空間側に固定されている。   Specifically, the heat radiating pipes 61 and 62 are refrigerant pipes connecting the outlet side of the condenser 56 and the inlet of the switching valve 57, and the high temperature side through which the liquid refrigerant before being decompressed by the decompression devices 58 and 59 circulates. It constitutes a part of the refrigerant pipe and is fixed to the heat insulating space side of the outer box 12.

放熱パイプ６１は、凝縮器５６の出口側に接続され、図４に示すように、機械室１９の天井面を形成する外箱底板１２ａを貫通してキャビネット１６の発泡空間内へ進入する。キャビネット１６内へ進入した放熱パイプ６１は、キャビネット１６の一方の側壁１６ａ内をその周縁部に沿って略環状に設けられており、放熱パイプ６１の端部が外箱底板１２ａを貫通して再び機械室１９に戻り放熱パイプ６２に接続される。   The heat radiating pipe 61 is connected to the outlet side of the condenser 56, and enters the foaming space of the cabinet 16 through the outer box bottom plate 12 a forming the ceiling surface of the machine room 19 as shown in FIG. 4. The heat radiating pipe 61 that has entered the cabinet 16 is provided in a substantially annular shape along one of the side walls 16a of the cabinet 16 along its peripheral edge, and the end of the heat radiating pipe 61 penetrates the outer box bottom plate 12a again. It returns to the machine room 19 and is connected to the heat radiating pipe 62.

放熱パイプ６２は、機械室１９の左右一方の側部から外箱底板１２ａを貫通してキャビネット１６の一方の側壁１６ａ内へ進入し、一方の側壁１６ａの後端部を上方に向かって延び、キャビネット１６の天井壁１６ｃを通って、他方の側壁１６ｂの後端部を下方に向かって延びて機械室１９の他方の側部へ戻るように配設され、機械室１９内に設けられた切替弁５７の入口に接続されている。   The heat radiating pipe 62 penetrates the outer box bottom plate 12a from one of the left and right sides of the machine room 19 and enters the one side wall 16a of the cabinet 16, and extends upward at the rear end of the one side wall 16a. The switching provided in the machine room 19 is arranged so as to extend downward through the ceiling wall 16c of the cabinet 16 and return to the other side part of the machine room 19 extending downward. It is connected to the inlet of the valve 57.

キャビネット１６の側壁１６ａ，１６ｂに配設された放熱パイプ６２のうち貯蔵空間の外側に位置する部分６２ａ、つまり、側壁１６ａ，１６ｂにおいて貯蔵空間を区画する部分に配設された側面放熱パイプ６２ａは、側壁１６ａ，１６ｂの後端部を外箱１２の断熱空間側に上下方向に沿って延びる直線形状をなしている。側壁１６ａ，１６ｂ内に配設された側面放熱パイプ６２ａの上端部は、前方に折り曲げられキャビネット１６の天井壁１６ｃに進入する。   Of the heat radiating pipes 62 disposed on the side walls 16a and 16b of the cabinet 16, the portion 62a located outside the storage space, that is, the side surface heat radiating pipe 62a disposed on the side walls 16a and 16b that divides the storage space, The rear ends of the side walls 16a and 16b have a linear shape extending in the vertical direction toward the heat insulating space of the outer box 12. The upper end portions of the side surface heat radiating pipes 62 a disposed in the side walls 16 a and 16 b are bent forward and enter the ceiling wall 16 c of the cabinet 16.

キャビネット１６の天井壁１６ｃ内に配設された放熱パイプ６２は、図４に示すように、天井壁１６ｃの幅方向両端部に撓み部６２ｃを備える。   As shown in FIG. 4, the heat radiating pipe 62 disposed in the ceiling wall 16 c of the cabinet 16 includes bent portions 62 c at both ends in the width direction of the ceiling wall 16 c.

撓み部６２ｃは、天井壁１６ｃの後部から前方へ延び前後方向の中央部付近で後方へ折り返されて形成され、天井壁１６ｃの後部から前方へ突出する折返し形状をなしている。このような形状の撓み部６２ｃは、前後方向に延びて幅方向に相対向する一対の辺部６２ｃ−１が近接離間するように弾性変形することで幅方向へ弾性変形可能に設けられている。天井壁１６ｃの幅方向両端部に設けられた撓み部６２ｃは、天井壁１６ｃの後端部を外箱１２の断熱空間側に沿って直線状に配設された天井放熱パイプ６２ｂによって連結されている。   The bending part 62c extends forward from the rear part of the ceiling wall 16c and is folded back to the vicinity of the center part in the front-rear direction, and has a folded shape protruding forward from the rear part of the ceiling wall 16c. The bent portion 62c having such a shape is provided so as to be elastically deformable in the width direction by elastically deforming so that a pair of side portions 62c-1 extending in the front-rear direction and facing each other in the width direction are close to each other. . The bent portions 62c provided at both ends in the width direction of the ceiling wall 16c are connected to the rear end portion of the ceiling wall 16c by ceiling heat radiating pipes 62b arranged linearly along the heat insulating space side of the outer box 12. Yes.

また、真空断熱材１１，１５は、アルミニウム箔を含むラミネートフィルムで製袋したガスバリア容器に綿状のガラス繊維からなるコア材を真空状態で密封して板状に形成したもので、真空断熱材１１がキャビネット１６の天井壁１６ｃに設けられ、真空断熱材１５がキャビネット１６の左右の側壁１６ａ，１６ｂに設けられている。   Moreover, the vacuum heat insulating materials 11 and 15 are formed by sealing a core material made of cotton-like glass fiber in a vacuum state into a gas barrier container made of a laminated film containing an aluminum foil in a vacuum state. 11 is provided on the ceiling wall 16 c of the cabinet 16, and the vacuum heat insulating material 15 is provided on the left and right side walls 16 a and 16 b of the cabinet 16.

キャビネット１６の天井壁１６ｃに設けられた真空断熱材１１は、前後方向が天井壁１６ｃに設けられた凹部３０と天井放熱パイプ６２ｂとの間であって、かつ、幅方向が放熱パイプ６２に設けられた撓み部６２ｃの間に配設されている。つまり、真空断熱材１１は、天井壁１６ｃに設けられた凹部３０の上方位置を避けるとともに、撓み部６２ｃ及び天井放熱パイプ６２ｂを避けて配置されており、真空断熱材１１の左右側方及び後方に放熱パイプ６２が配設されている。また、凹部３０の周壁のうち真空断熱材１１に近接する後壁が、真空断熱材１１の前端部との間隔を広く確保するように、上方に行くほど前方に傾斜する傾斜面３３をなしている。   The vacuum heat insulating material 11 provided on the ceiling wall 16c of the cabinet 16 is provided between the concave portion 30 provided on the ceiling wall 16c and the ceiling heat radiating pipe 62b in the front-rear direction, and provided in the heat radiating pipe 62 in the width direction. Between the bent portions 62c. That is, the vacuum heat insulating material 11 is disposed so as to avoid the upper position of the concave portion 30 provided in the ceiling wall 16c, and to avoid the bending portion 62c and the ceiling heat radiating pipe 62b. A heat radiating pipe 62 is disposed on the surface. Moreover, the rear wall which adjoins the vacuum heat insulating material 11 among the surrounding walls of the recessed part 30 makes the inclined surface 33 which inclines forward, so that it goes upwards so that the space | interval with the front-end part of the vacuum heat insulating material 11 may be ensured widely. Yes.

本実施形態では、図２に示すように、キャビネット１６の天井壁１６ｃに設けられた撓み部６２ｃ及び天井放熱パイプ６２ｂの外径寸法Ｘが、天井壁１６ｃに配設された真空断熱材１１の厚さ寸法Ｙより小さく設けられている。これにより、キャビネット１６の天井壁１６ｃに設けられた撓み部６２ｃ及び天井放熱パイプ６２ｂは、真空断熱材１１の範囲内に納まり真空断熱材１１より下方に突出することがない。また、真空断熱材１１の下方であって凹部３０の後方には、天井壁１６ｃに設けられた撓み部６２ｃ及び天井放熱パイプ６２ｂが存在していない。   In this embodiment, as shown in FIG. 2, the outer diameter dimension X of the bending part 62c provided in the ceiling wall 16c of the cabinet 16 and the ceiling heat radiating pipe 62b of the vacuum heat insulating material 11 provided in the ceiling wall 16c. The thickness is smaller than Y. Thereby, the bending part 62c and the ceiling heat radiating pipe 62b provided in the ceiling wall 16c of the cabinet 16 are contained in the range of the vacuum heat insulating material 11, and do not protrude below the vacuum heat insulating material 11. Further, below the vacuum heat insulating material 11 and behind the concave portion 30, there is no bent portion 62c and ceiling heat radiating pipe 62b provided on the ceiling wall 16c.

キャビネット１６の左右の側壁１６ａ，１６ｂのうち放熱パイプ６１が配設された一方の側壁１６ａに設けられた真空断熱材１５は、図５に示すように、外箱１２との対向面に放熱パイプ６１の外形寸法より大きく陥没し上下方向に延びる一対の凹溝１５ａが設けられている。凹溝１５ａが設けられた真空断熱材１５は、凹溝１５ａにおいて放熱パイプ６１を外箱１２との間で挟むように外箱１２に固定される。   The vacuum heat insulating material 15 provided on one of the left and right side walls 16a and 16b of the cabinet 16 where the heat radiating pipe 61 is disposed is provided on the surface facing the outer box 12 as shown in FIG. A pair of concave grooves 15a which are depressed larger than the outer dimensions of 61 and extend in the vertical direction are provided. The vacuum heat insulating material 15 provided with the concave groove 15a is fixed to the outer box 12 so that the heat radiating pipe 61 is sandwiched between the outer casing 12 in the concave groove 15a.

このようなキャビネット１６を製造するには、まず、鋼板をプレス加工等によって所定形状に形成した外箱１２の断熱空間側に所定形状に折り曲げた放熱パイプ６１，６２を固定する。放熱パイプ６１，６２の固定は、放熱パイプ６１，６２の熱が外箱１２へ良好に伝導するようにアルミニウム箔テープや良熱伝導性のホットメルト接着材等の固定手段６４によって行う。   In order to manufacture such a cabinet 16, first, the heat radiating pipes 61 and 62, which are bent into a predetermined shape, are fixed to the heat insulating space side of the outer box 12 in which a steel plate is formed into a predetermined shape by pressing or the like. The heat radiating pipes 61 and 62 are fixed by fixing means 64 such as an aluminum foil tape or a good heat conductive hot melt adhesive so that the heat of the heat radiating pipes 61 and 62 is conducted well to the outer box 12.

具体的には、キャビネット１６の一方の側壁１６ａから天井壁１６ｃを介して他方の側壁１６ｂに配設された放熱パイプ６２は、撓み部６２ｃ以外の側面放熱パイプ６２ａ及び天井放熱パイプ６２ｂが固定手段６４によって固定されており、撓み部６２ｃが外箱１２に対して固定されておらず自由に移動できるようになっている。   Specifically, the heat radiating pipe 62 disposed from one side wall 16a of the cabinet 16 to the other side wall 16b through the ceiling wall 16c is fixed to the side surface heat radiating pipe 62a and the ceiling heat radiating pipe 62b other than the bent portion 62c. 64, and the bending part 62c is not fixed with respect to the outer case 12, but can move freely.

次に、放熱パイプ６１，６２を固定した外箱１２の天井面及び左右側面の断熱空間側に真空断熱材１１，１５を固定する。   Next, the vacuum heat insulating materials 11 and 15 are fixed to the ceiling surface of the outer box 12 to which the heat radiating pipes 61 and 62 are fixed and the heat insulating space sides of the left and right side surfaces.

そして、放熱パイプ６１，６２と真空断熱材１１，１５とが発泡空間側に固定された外箱１２と、内箱１４とを組み付けて外箱１２と内箱１４との間に断熱空間を形成し、この断熱空間にポリウレタンホームからなる発泡断熱材の原液を注入する。これにより、外箱１２の断熱空間側に放熱パイプ６１，６２と真空断熱材１１，１５とを配設した状態で発泡断熱材１３によって外箱１２と内箱１４とが一体化されたキャビネット１６が形成される。   Then, the outer box 12 in which the heat radiating pipes 61 and 62 and the vacuum heat insulating materials 11 and 15 are fixed to the foaming space side and the inner box 14 are assembled to form a heat insulating space between the outer box 12 and the inner box 14. Then, a stock solution of foam heat insulating material made of polyurethane home is poured into this heat insulating space. Thereby, the cabinet 16 in which the outer box 12 and the inner box 14 are integrated by the foam heat insulating material 13 in a state where the heat radiating pipes 61 and 62 and the vacuum heat insulating materials 11 and 15 are arranged on the heat insulating space side of the outer box 12. Is formed.

このように発泡断熱材１３を断熱空間に発泡充填する際、本実施形態の冷蔵庫１０では、キャビネット１６の天井壁１６ｃに設けられた真空断熱材１１が、天井壁１６ｃの庫内側から上方へ陥没形成された凹部３０の上方位置を避けて配置されており、凹部３０と真空断熱材１１との間隔を大きくすることができるため、キャビネット１６の断熱空間へ発泡断熱材１３を発泡充填する際の液回りが改善され、発泡断熱材１３の欠肉を抑えることができる。   When the foam insulation 13 is foam-filled into the heat insulation space in this way, in the refrigerator 10 of this embodiment, the vacuum insulation 11 provided on the ceiling wall 16c of the cabinet 16 sinks upward from the inside of the ceiling wall 16c. Since it is arranged avoiding the upper position of the formed recess 30 and the interval between the recess 30 and the vacuum heat insulating material 11 can be increased, the foam heat insulating material 13 is foam-filled into the heat insulating space of the cabinet 16. The liquid circumference is improved, and the lack of foam insulation 13 can be suppressed.

また、本実施形態の冷蔵庫１０では、凹部３０の後壁に上方に行くほど前方に傾斜する傾斜面３３が設けられ、真空断熱材１１の前端部と凹部３０との間隔が広く確保されているため、発泡断熱材１３を発泡充填する際に凹部３０の後方に空気が残留しにくくなり、発泡断熱材１３の欠肉を抑えることができる。   Moreover, in the refrigerator 10 of this embodiment, the inclined surface 33 which inclines ahead is provided in the rear wall of the recessed part 30, and the space | interval of the front-end part of the vacuum heat insulating material 11 and the recessed part 30 is ensured widely. For this reason, when foaming and filling the foam heat insulating material 13, air hardly remains behind the recess 30, and the lack of the foam heat insulating material 13 can be suppressed.

また、本実施形態の冷蔵庫１０では、凹部３０の内底面に冷蔵室２２側へ向けて突出する補強リブ３５が設けられているため、発泡断熱材１３を発泡充填する際の液回りを悪化させることなく凹部３０の剛性を高めることができる。   Moreover, in the refrigerator 10 of this embodiment, since the reinforcing rib 35 which protrudes toward the refrigerator compartment 22 side is provided in the inner bottom face of the recessed part 30, the liquid periphery at the time of foam-filling the foam heat insulating material 13 is deteriorated. The rigidity of the recess 30 can be increased without any problems.

しかも、本実施形態の冷蔵庫１０では、通電により発熱する照明装置３１を収納する凹部３０の上方位置に真空断熱材が配設されていないため、凹部３０の上方位置に真空断熱材を配設した場合に比べて、照明装置３１において発生した熱が庫外へ放出されて庫内にこもりにくくなる。そのため、照明装置３１の発熱による庫内の温度上昇を抑えることができ、冷蔵庫の消費電力を低減することができる。   In addition, in the refrigerator 10 of the present embodiment, the vacuum heat insulating material is disposed above the concave portion 30 because the vacuum heat insulating material is not disposed above the concave portion 30 that houses the lighting device 31 that generates heat when energized. Compared to the case, the heat generated in the lighting device 31 is released to the outside of the warehouse, and it becomes difficult to stay inside the warehouse. Therefore, the temperature rise in the store | warehouse | chamber by the heat_generation | fever of the illuminating device 31 can be suppressed, and the power consumption of a refrigerator can be reduced.

また、本実施形態の冷蔵庫１０では、天井壁１６ｃ内に設けられた撓み部６２ｃ及び天井放熱パイプ６２ｂの外径寸法Ｘが、真空断熱材１１の厚さ寸法Ｙより小さく設けられているため、天井壁１６ｃに設けられた放熱パイプ６２（撓み部６２ｃ及び天井放熱パイプ６２ｂ）が真空断熱材１１より下方に突出することがなくキャビネット１６の断熱空間へ発泡断熱材１３を発泡充填する際の妨げとなりにくく、発泡断熱材１３の欠肉を抑えることができる。   Moreover, in the refrigerator 10 of this embodiment, since the outer diameter dimension X of the bending part 62c provided in the ceiling wall 16c and the ceiling heat radiating pipe 62b is provided smaller than the thickness dimension Y of the vacuum heat insulating material 11, The heat-dissipating pipe 62 (bending portion 62c and ceiling heat-dissipating pipe 62b) provided on the ceiling wall 16c does not protrude downward from the vacuum heat insulating material 11, and hinders foam filling of the heat insulating foam 13 into the heat insulating space of the cabinet 16. It is hard to become, and the lack of the foam heat insulating material 13 can be suppressed.

なお、本実施形態では、凹部３０内に収納される放熱部材として冷蔵室２２内を照明する照明装置３１の場合について説明したが、本発明はこれに限定されず、例えば、水に高電圧を印加して帯電した微粒子のミストを噴霧する静電霧化装置など、通電によって発熱する発熱部材を凹部３０内に収納しても良い。   In addition, although this embodiment demonstrated the case of the illuminating device 31 which illuminates the inside of the refrigerator compartment 22 as a heat radiating member accommodated in the recessed part 30, this invention is not limited to this, For example, a high voltage is applied to water A heat generating member that generates heat when energized, such as an electrostatic atomizer that sprays mist of fine particles that are charged by application, may be housed in the recess 30.

また、上記した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。これらの実施形態は、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。これらの実施形態は、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。   Moreover, the above-described embodiment is presented as an example, and is not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments are included in the scope and gist of the invention, and are also included in the invention described in the scope of claims and the equivalents thereof.

１０…冷蔵庫 １１…真空断熱材 １２…外箱
１２ａ…外箱底板 １３…発泡断熱材 １４…内箱
１５…真空断熱材 １５ａ…凹溝 １６…キャビネット
１６ｃ…天井壁 １９…機械室 ２０…冷蔵空間
２２…冷蔵室 ２４…野菜室 ３０…凹部
３１…照明装置 ３２…シェード ３３…傾斜面
３４…傾斜面 ３５…補強リブ ４０…冷凍空間
４２…製氷室 ４６…冷凍室 ５０…冷凍サイクル
６２…放熱パイプ ６２ａ…側面放熱パイプ ６２ｂ…天井放熱パイプ
６２ｃ…撓み部 ６４…固定手段 DESCRIPTION OF SYMBOLS 10 ... Refrigerator 11 ... Vacuum heat insulating material 12 ... Outer box 12a ... Outer box bottom plate 13 ... Foam heat insulating material 14 ... Inner box 15 ... Vacuum heat insulating material 15a ... Groove 16 ... Cabinet 16c ... Ceiling wall 19 ... Machine room 20 ... Refrigerated space DESCRIPTION OF SYMBOLS 22 ... Refrigeration room 24 ... Vegetable room 30 ... Recessed part 31 ... Illumination device 32 ... Shade 33 ... Inclined surface 34 ... Inclined surface 35 ... Reinforcement rib 40 ... Freezing space 42 ... Ice making room 46 ... Freezing room 50 ... Refrigeration cycle 62 ... Radiation pipe 62a ... Side heat radiating pipe 62b ... Ceiling heat radiating pipe 62c ... Deflection part 64 ... Fixing means

Claims (5)

外箱と内箱との間に断熱材を発泡充填したキャビネットと、前記キャビネットの天井壁内に設けた真空断熱材と、前記キャビネットの天井壁の庫内側から上方へ陥没する凹部とを備え、前記真空断熱材が前記凹部の上方位置を前記断熱材を発泡充填する際の液回りを改善するように避けて配置されていることを特徴とする冷蔵庫。 A cabinet in which a heat insulating material is foam-filled between the outer box and the inner box, a vacuum heat insulating material provided in the ceiling wall of the cabinet, and a concave portion recessed upward from the inside of the ceiling wall of the cabinet, The refrigerator characterized in that the vacuum heat insulating material is disposed so as to avoid the position above the recess so as to improve the liquid periphery when foam filling the heat insulating material . 前記凹部内に発熱部材が収納されていることを特徴とする請求項１に記載の冷蔵庫。   The refrigerator according to claim 1, wherein a heat generating member is accommodated in the recess. 前記凹部が上方に行くほど前方に傾斜する傾斜面を備えることを特徴とする請求項１又は２に記載の冷蔵庫。   The refrigerator according to claim 1, further comprising an inclined surface that is inclined forward as the concave portion goes upward. 前記凹部に庫内へ向けて突出するリブが設けられていることを特徴とする請求項１〜３のいずれか一項に記載の冷蔵庫。   The refrigerator as described in any one of Claims 1-3 with which the rib which protrudes in the said recessed part toward the inside of a store | warehouse | chamber is provided. 冷凍サイクルと、前記冷凍サイクルの高温側冷媒パイプの一部を構成し前記キャビネットの天井壁内に設けられた放熱パイプとを備え、前記放熱パイプの外径寸法が前記真空断熱材の厚さ寸法より小さいことを特徴とする請求項１〜４のいずれか一項に記載の冷蔵庫。   A refrigerating cycle; and a heat dissipating pipe constituting a part of the high-temperature side refrigerant pipe of the refrigerating cycle and provided in the ceiling wall of the cabinet, and the outer diameter of the heat dissipating pipe is the thickness of the vacuum heat insulating material. The refrigerator according to any one of claims 1 to 4, wherein the refrigerator is smaller.
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