JP6794507B2

JP6794507B2 - refrigerator

Info

Publication number: JP6794507B2
Application number: JP2019128206A
Authority: JP
Inventors: 揚劉
Original assignee: Toshiba Lifestyle Products and Services Corp
Current assignee: Toshiba Lifestyle Products and Services Corp
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2020-12-02
Anticipated expiration: 2034-06-26
Also published as: JP2019178864A

Description

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

従来、冷蔵庫のキャビネットに組み込まれる冷凍サイクルは、圧縮機で圧縮された冷媒が、凝縮器、キャピラリチューブ、冷却器、サクションパイプを順次流れ、再び圧縮機に戻るように構成されている。 Conventionally, the refrigeration cycle incorporated in the refrigerator cabinet is configured such that the refrigerant compressed by the compressor flows through the condenser, the capillary tube, the cooler, and the suction pipe in order, and then returns to the compressor again.

このような冷凍サイクルでは、冷却器と圧縮機との間を接続するサクションパイプにおいて、冷却器から流れ出た冷媒の温度を適度に上昇させてから圧縮機に冷媒を戻すため、サクションパイプが、貯蔵室の背面を区画するキャビネットの背壁内において折り返すなどして引き回して配置され、冷媒の温度上昇に必要な長さを確保している（例えば、特許文献１参照）。 In such a refrigeration cycle, in the suction pipe connecting the cooler and the compressor, the suction pipe stores the refrigerant because the temperature of the refrigerant flowing out of the cooler is appropriately raised and then the refrigerant is returned to the compressor. It is arranged around the back wall of the cabinet that divides the back of the room by folding it back to secure the length required for the temperature rise of the refrigerant (see, for example, Patent Document 1).

ところで、冷蔵庫では、設置スペースに対する内容積の大容量化の要求も高いことから、冷蔵庫のキャビネットの断熱空間の厚さを小さくすることが行われている。その際、断熱空間の厚さを小さくしても断熱性能を充分に確保するため、断熱空間の広範囲にウレタンなどの発泡断熱材より断熱性能に優れる真空断熱材が設けられている。 By the way, in refrigerators, there is a high demand for a large internal volume for the installation space, so that the thickness of the heat insulating space of the refrigerator cabinet is reduced. At that time, in order to secure sufficient heat insulating performance even if the thickness of the heat insulating space is reduced, a vacuum heat insulating material having better heat insulating performance than foam heat insulating material such as urethane is provided in a wide range of the heat insulating space.

特開２００２−７１２６２号公報JP-A-2002-71262

しかしながら、上記のようにサクションパイプなど冷凍サイクルの一部を構成する配管をキャビネットの背壁の内部に設けると、配管が発泡断熱材に完全に埋設されるように発泡断熱材の厚さ寸法を確保しなければならず、キャビネットの背壁が肉厚になり内容積の大容量化には限度がある。 However, if the piping that forms part of the refrigeration cycle, such as the suction pipe, is provided inside the back wall of the cabinet as described above, the thickness of the foam insulation is adjusted so that the piping is completely embedded in the foam insulation. It must be secured, and the back wall of the cabinet becomes thick, and there is a limit to increasing the internal volume.

そこで、キャビネットの内容積の低下を抑制しつつ、サクションパイプをキャビネットの断熱空間内に設けることができる冷蔵庫を提供することを目的とする。 Therefore, it is an object of the present invention to provide a refrigerator in which a suction pipe can be provided in the heat insulating space of the cabinet while suppressing a decrease in the internal volume of the cabinet.

本実施形態の冷蔵庫は、内箱と、外箱と、前記内箱及び前記外箱の間に形成された断熱空間に設けられた断熱材とを有し、前記内箱の内側に冷却器室が形成され前記外箱の外側に機械室が形成されたキャビネットと、前記冷却器室に設けられた冷却器と、前記機械室に設けられた圧縮機と、前記冷却器から流れ出た冷媒を前記圧縮機に戻すサクションパイプとを有し、前記キャビネットに組み込まれる冷凍サイクルと、を備え、前記サクションパイプは、前記キャビネットの側壁と背壁とで形成された前記断熱空間の角部において上下に折り返され背面視で交差するように設けられ、上流側サクションパイプと、前記上流側サクションパイプより冷媒流れ方向下流側に位置する下流側サクションパイプとが、前記角部において並走し、前記上流側サクションパイプは、前記下流側サクションパイプより前記キャビネットの幅方向外方かつ前方に設けられている冷蔵庫。
The refrigerator of the present embodiment has an inner box, an outer box, and a heat insulating material provided in a heat insulating space formed between the inner box and the outer box, and has a cooler chamber inside the inner box. A cabinet in which a machine chamber is formed on the outside of the outer box, a cooler provided in the cooler chamber, a compressor provided in the machine chamber, and a refrigerant flowing out of the cooler. It has a suction pipe that returns to the compressor, a refrigeration cycle that is incorporated into the cabinet, and the suction pipe is folded up and down at a corner of the insulation space formed by the side wall and back wall of the cabinet. The upstream suction pipe and the downstream suction pipe located on the downstream side in the refrigerant flow direction from the upstream suction pipe run side by side at the corners of the upstream suction pipe so as to intersect with each other in the rear view. The pipe is a refrigerator provided outside and in front of the downstream suction pipe in the width direction of the cabinet.

本発明の第１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 1st Embodiment of this invention. 断熱扉を外した冷蔵室の断面図である。It is sectional drawing of the refrigerating room which removed the heat insulating door. 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の冷蔵庫の電気構成を示すブロック図である。It is a block diagram which shows the electric composition of the refrigerator of FIG. 背面方向から見た内箱の斜視図である。It is a perspective view of the inner box seen from the back direction. 保持具の断面図である。It is sectional drawing of the holder. 内箱に対する冷蔵パイプ体及び冷凍パイプ体の配置を示す内箱の背面図である。It is a rear view of the inner box which shows the arrangement of the refrigerating pipe body and the freezing pipe body with respect to the inner box. 断熱固定具の斜視図である。It is a perspective view of a heat insulating fixture. 放熱パイプ及び防露パイプの設置構成を背面方向から示す斜視図である。It is a perspective view which shows the installation structure of a heat dissipation pipe and a dew-proof pipe from the rear direction. 本発明の第２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 2nd Embodiment of this invention. 第２実施形態に係る冷蔵庫における内箱に対する冷蔵パイプ体及び冷凍パイプ体の配置を示す内箱の背面図である。It is a rear view of the inner box which shows the arrangement of the refrigerating pipe body and the freezing pipe body with respect to the inner box in the refrigerator which concerns on 2nd Embodiment.

（第１実施形態）
以下、図面に基づいて本発明の第１実施形態について説明する。 (First Embodiment)
Hereinafter, the first embodiment of the present invention will be described with reference to the drawings.

本実施形態に係る冷蔵庫１は、図１および図２に示すように、前面に開口するキャビネット２を備える。キャビネット２は、鋼板製の外箱４と合成樹脂製の内箱６との間に形成された断熱空間８に断熱材を有して構成されている。キャビネット２の内部には複数の貯蔵室が設けられており、具体的には、図１に示すように、上段から順に、冷蔵室１０、野菜室１２が設けられ、その下方に製氷室１４と小冷凍室（図示せず）が左右に並べて設けられ、これらの下方に冷凍室１６が設けられている。製氷室１４内には、自動製氷装置１８が設けられている。 As shown in FIGS. 1 and 2, the refrigerator 1 according to the present embodiment includes a cabinet 2 that opens to the front. The cabinet 2 is configured to have a heat insulating material in a heat insulating space 8 formed between the outer box 4 made of steel plate and the inner box 6 made of synthetic resin. A plurality of storage chambers are provided inside the cabinet 2. Specifically, as shown in FIG. 1, a refrigerating chamber 10 and a vegetable compartment 12 are provided in this order from the top, and an ice making chamber 14 is provided below the refrigerator compartment 10. Small freezing chambers (not shown) are provided side by side, and a freezing chamber 16 is provided below them. An automatic ice making device 18 is provided in the ice making chamber 14.

冷蔵室１０および野菜室１２は、いずれも冷蔵温度帯（例えば、１〜４℃）に冷却される貯蔵室であり、それらの間は、合成樹脂製の仕切壁２０により上下に仕切られている。冷蔵室１０の前面開口部には、ヒンジ開閉式の断熱扉１０ａが設けられている。断熱扉１０ａ前面には、庫内温度などを表示する表示部とブザー音や音声を発する音声部と庫内温度などを調節する操作部を備えた操作パネル１３と、使用者の操作によって開扉装置１５を作動させる開扉スイッチ１７が設けられている。 Both the refrigerating chamber 10 and the vegetable compartment 12 are storage chambers that are cooled to a refrigerating temperature range (for example, 1 to 4 ° C.), and are partitioned above and below by a partition wall 20 made of synthetic resin. .. A hinge opening / closing type heat insulating door 10a is provided at the front opening of the refrigerator compartment 10. On the front surface of the heat insulating door 10a, an operation panel 13 equipped with a display unit for displaying the temperature inside the refrigerator, a voice unit for emitting a buzzer sound or a voice, and an operation unit for adjusting the temperature inside the refrigerator, and the door opened by the operation of the user. A door opening switch 17 for operating the device 15 is provided.

開扉装置１５は、図１に示すように、キャビネット２の天井壁の上面に設けられており、開扉スイッチ１７の操作を受けて、不図示の押圧部材を前方に突き出すことにより断熱扉１０ａを前方へ押圧して開扉する。また、冷蔵室１０内には、冷蔵室１０の庫内温度を検出する冷蔵室温度センサ１１や、断熱扉１０ａの開閉を検知する扉センサ２１や冷蔵室１０内を照明する庫内灯２３が設けられている。 As shown in FIG. 1, the door opening device 15 is provided on the upper surface of the ceiling wall of the cabinet 2, and the heat insulating door 10a is formed by projecting a pressing member (not shown) forward in response to the operation of the door opening switch 17. Press forward to open the door. Further, in the refrigerating room 10, there is a refrigerating room temperature sensor 11 that detects the temperature inside the refrigerating room 10, a door sensor 21 that detects the opening and closing of the heat insulating door 10a, and an internal light 23 that illuminates the inside of the refrigerating room 10. It is provided.

野菜室１２の前面開口部には、引出し式の断熱扉１２ａが設けられている。この断熱扉１２ａの背面部には、貯蔵容器を構成する上下２段の収納ケース２２が連結されている。
製氷室１４、小冷凍室、及び冷凍室１６は、いずれも冷凍温度帯（例えば、−１０〜−２０℃）に冷却される貯蔵室であり、野菜室１２と製氷室１４および小冷凍室との間は、内部に断熱材が設けられた断熱仕切壁２８により上下に仕切られている。製氷室１４の前面開口部には、引出し式の断熱扉１４ａが設けられており、その断熱扉１４ａの背面部に貯氷容器３０が連結されている。小冷凍室の前面開口部にも、図示はしないが、貯蔵容器が連結された引出し式の断熱扉が設けられている。冷凍室１６の前面開口部にも、上下２段の貯蔵容器３２が連結された引出し式の断熱扉１６ａが設けられている。
製氷室１４、小冷凍室、及び冷凍室１６の前面には、各断熱扉１４ａ、１６ａの開閉を検知する扉センサ２４、２５が設けられている。また、冷凍室１６の背面には、冷凍室１６の庫内温度を検出する冷凍室温度センサ２６が設けられている。 A drawer-type heat insulating door 12a is provided at the front opening of the vegetable compartment 12. Two upper and lower storage cases 22 constituting a storage container are connected to the back surface of the heat insulating door 12a.
The ice making chamber 14, the small freezing chamber, and the freezing chamber 16 are all storage chambers cooled to a freezing temperature range (for example, -10 to -20 ° C.), and include the vegetable chamber 12, the ice making chamber 14, and the small freezing chamber. The space is partitioned vertically by a heat insulating partition wall 28 provided with a heat insulating material inside. A drawer-type heat insulating door 14a is provided at the front opening of the ice making chamber 14, and an ice storage container 30 is connected to the back surface of the heat insulating door 14a. Although not shown, the front opening of the small freezer is also provided with a drawer-type heat insulating door to which a storage container is connected. A drawer-type heat insulating door 16a to which two upper and lower storage containers 32 are connected is also provided at the front opening of the freezing chamber 16.
Door sensors 24 and 25 for detecting the opening and closing of the heat insulating doors 14a and 16a are provided on the front surfaces of the ice making chamber 14, the small freezing chamber, and the freezing chamber 16. Further, on the back surface of the freezing chamber 16, a freezing chamber temperature sensor 26 for detecting the temperature inside the freezing chamber 16 is provided.

キャビネット２内には、各貯蔵室を冷却する冷凍サイクル５０（図３参照）が組み込まれている。詳細は後述するが、冷凍サイクル５０は、冷蔵温度帯の貯蔵室である冷蔵室１０、野菜室１２を冷却するための冷蔵冷却器５２と、冷凍温度帯の貯蔵室である製氷室１４、小冷凍室、冷凍室１６を冷却するための冷凍冷却器５４とを含んで構成されている。図１に示すように、キャビネット２の外箱４の外側、この例では、キャビネット２の背面下端部には、機械室３４が設けられている。この機械室３４内に、冷凍サイクル５０を構成する圧縮機５６や凝縮器５８（図３参照）およびこれらを冷却するための冷却ファン５７（図４参照）などが配設されている。 A refrigeration cycle 50 (see FIG. 3) for cooling each storage chamber is incorporated in the cabinet 2. Although the details will be described later, in the freezing cycle 50, the refrigerating chamber 10 which is a storage chamber in the refrigerating temperature zone, the refrigerating cooler 52 for cooling the vegetable compartment 12, the ice making chamber 14 which is the storage chamber in the freezing temperature zone, and the small It is configured to include a freezing chamber and a freezing cooler 54 for cooling the freezing chamber 16. As shown in FIG. 1, a machine room 34 is provided outside the outer box 4 of the cabinet 2, in this example, at the lower end of the back surface of the cabinet 2. In the machine room 34, a compressor 56 and a condenser 58 (see FIG. 3) constituting the refrigeration cycle 50, a cooling fan 57 for cooling them (see FIG. 4), and the like are arranged.

キャビネット２の冷蔵温度帯の貯蔵室（冷蔵室１０及び野菜室１２）の奥部には、冷蔵冷却器室３６及びダクト３８が形成されている。冷蔵冷却器室３６には、冷蔵冷却器５２及び冷蔵ファン５３が設けられており、冷蔵ファン５３が、冷蔵冷却器５２で冷却した冷蔵冷却器室３６内の空気をダクト３８を介して冷蔵室１０および野菜室１２に供給することで、これらの貯蔵室を冷却する。 A refrigerating cooler chamber 36 and a duct 38 are formed in the inner part of the storage chambers (refrigerating chamber 10 and vegetable compartment 12) in the refrigerating temperature zone of the cabinet 2. The refrigerating cooler room 36 is provided with a refrigerating cooler 52 and a refrigerating fan 53, and the refrigerating fan 53 blows air in the refrigerating cooler room 36 cooled by the refrigerating cooler 52 through a duct 38. The storage chambers are cooled by supplying the 10 and the vegetable compartment 12.

また、冷蔵冷却器室３６には、冷蔵冷却器５２から発生した除霜水を受ける冷蔵水受部３１が設けられている。冷蔵水受部３１で受けた除霜水は、冷蔵排水ホース３３（図７参照）を介して、機械室３４内に設けられた蒸発皿に排水され、機械室３４内で発生する熱を受けて蒸発するようになっている。 Further, the refrigerating cooler room 36 is provided with a refrigerating water receiving unit 31 that receives the defrosted water generated from the refrigerating cooler 52. The defrosted water received by the refrigerated water receiving unit 31 is drained to an evaporating dish provided in the machine room 34 via the refrigerated drain hose 33 (see FIG. 7), and receives the heat generated in the machine room 34. Is designed to evaporate.

キャビネット２内部において冷凍温度帯の貯蔵室（製氷室１４、小冷凍室、冷凍室１６）の奥部には、冷凍冷却器室４０及びダクト４４が設けられている。この冷凍冷却器室４０は、その上方が断熱仕切壁２８によって区画され、後方がキャビネット２の背壁２ｅによって区画され、左右側方がキャビネット２の左右側壁２ａ，２ｂによって区画され、前方がカバー体５９によって区画された空間であり、その内部に冷凍冷却器５４及び冷凍ファン５５が設けられている。冷凍冷却器室４０に設けられた冷凍ファン５５は、冷凍冷却器５４で冷却した冷凍冷却器室４０内の空気をダクト４４を介して製氷室１４、小冷凍室、冷凍室１６に供給することで、これらの貯蔵室を冷却する。 A freezing cooler chamber 40 and a duct 44 are provided in the inner part of the storage chamber (ice making chamber 14, small freezing chamber, freezing chamber 16) in the freezing temperature zone inside the cabinet 2. The upper part of the freezing cooler chamber 40 is partitioned by a heat insulating partition wall 28, the rear is partitioned by the back wall 2e of the cabinet 2, the left and right sides are partitioned by the left and right side walls 2a and 2b of the cabinet 2, and the front is covered. It is a space partitioned by the body 59, and a freezing cooler 54 and a freezing fan 55 are provided inside the space. The freezing fan 55 provided in the freezing cooler room 40 supplies the air in the freezing cooler room 40 cooled by the freezing cooler 54 to the ice making room 14, the small freezing room, and the freezing room 16 via the duct 44. To cool these storage chambers.

また、冷凍冷却器室４０には、冷凍冷却器５４から発生した除霜水を受ける冷凍水受部３５が設けられている。冷凍水受部３５で受けた除霜水は、キャビネット２の底部断熱壁を通る冷凍排水ホース３７を介して、機械室３４内に設けられた蒸発皿に排水され、機械室３４内で発生する熱を受けて蒸発するようになっている。 Further, the freezing cooler chamber 40 is provided with a freezing water receiving unit 35 that receives the defrosted water generated from the freezing cooler 54. The defrosted water received by the frozen water receiving unit 35 is drained to an evaporating dish provided in the machine room 34 via a freezing drain hose 37 passing through the bottom heat insulating wall of the cabinet 2, and is generated in the machine room 34. It receives heat and evaporates.

キャビネット２の外側、例えば、キャビネット２の天井壁２ｃの上面後部には、冷蔵庫１を制御するマイコン等を実装した制御基板４６が設けられている。この制御基板４６には、図４に示すように、冷蔵室温度センサ１１、操作パネル１３、開扉装置１５、開扉スイッチ１７、扉センサ２１、２４，２５、庫内灯２３、冷凍室温度センサ２６、冷蔵ファン５３、冷凍ファン５５、圧縮機５６、冷却ファン５７及び三方弁７０等のキャビネット２の内側又は外側に設けられた電気部品が、リード線９０によって電気接続されており、各種センサやスイッチから入力される信号と予めメモリに記憶された制御プログラムに基づいて、操作パネル１３、開扉装置１５、庫内灯２３、冷蔵ファン５３、冷凍ファン５５、圧縮機５６、冷却ファン５７及び三方弁７０の動作を制御して冷蔵庫１の動作全般を制御する。 A control board 46 on which a microcomputer for controlling the refrigerator 1 is mounted is provided on the outside of the cabinet 2, for example, on the rear surface of the upper surface of the ceiling wall 2c of the cabinet 2. As shown in FIG. 4, the control board 46 includes a refrigerator compartment temperature sensor 11, an operation panel 13, a door opening device 15, a door opening switch 17, door sensors 21, 24, 25, an interior light 23, and a freezing chamber temperature. Electrical components provided inside or outside the cabinet 2 such as the sensor 26, the refrigerating fan 53, the refrigerating fan 55, the compressor 56, the cooling fan 57, and the three-way valve 70 are electrically connected by lead wires 90, and various sensors are used. Based on the signal input from the switch or the switch and the control program stored in the memory in advance, the operation panel 13, the door opening device 15, the interior light 23, the refrigerating fan 53, the refrigerating fan 55, the compressor 56, the cooling fan 57, and the like. The operation of the three-way valve 70 is controlled to control the overall operation of the refrigerator 1.

次に、冷凍サイクル５０の構成について詳述する。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５６の吐出側から順番に、蒸発パイプ６０、凝縮器５８、放熱パイプ６４、防露パイプ６６、ドライヤ６８、および三方弁７０の入口側が接続されている。 Next, the configuration of the refrigeration cycle 50 will be described in detail. As shown in FIG. 3, the refrigeration cycle 50 includes an evaporation pipe 60, a condenser 58, a heat radiation pipe 64, a dew-proof pipe 66, and a dryer in this order from the discharge side of the compressor 56 that discharges a high-temperature and high-pressure gaseous refrigerant. The inlet side of 68 and the three-way valve 70 are connected.

三方弁７０の一方の出口には、減圧手段としての冷蔵キャピラリチューブ７２、冷蔵冷却器５２、冷蔵アキュムレータ７４および冷蔵サクションパイプ７６が、配管により順に接続されている。三方弁７０の他方の出口には、減圧手段としての冷凍キャピラリチューブ７８、冷凍冷却器５４、冷凍アキュムレータ８０、冷凍サクションパイプ８２および逆止弁８４が配管により順に接続されている。そして、逆止弁８４の出口側と冷蔵サクションパイプ７６の出口側が一つになって圧縮機５６の吸入側に接続されている。 A refrigerating capillary tube 72, a refrigerating cooler 52, a refrigerating accumulator 74, and a refrigerating suction pipe 76 as decompression means are sequentially connected to one outlet of the three-way valve 70 by piping. A freezing capillary tube 78, a freezing cooler 54, a freezing accumulator 80, a freezing suction pipe 82, and a check valve 84 as decompression means are sequentially connected to the other outlet of the three-way valve 70 by piping. The outlet side of the check valve 84 and the outlet side of the refrigerating suction pipe 76 are united and connected to the suction side of the compressor 56.

三方弁７０は、凝縮器５８で液化した冷媒を、冷蔵冷却器５２と冷凍冷却器５４に対して交互に供給するように流路を切り替える切替弁であり、圧縮機５６から凝縮器５８及び冷蔵キャピラリチューブ７２を介して供給される低温の冷媒を冷蔵冷却器５２に供給する冷蔵冷却運転の状態と、冷蔵冷却器５２に供給せずに冷凍冷却器５４に供給する冷凍冷却運転の状態とに、切り替える。 The three-way valve 70 is a switching valve that switches the flow path so that the refrigerant liquefied by the condenser 58 is alternately supplied to the refrigerating cooler 52 and the refrigerating cooler 54, and is a switching valve that switches the flow path from the compressor 56 to the condenser 58 and the refrigerator. The state of the refrigerating cooling operation in which the low-temperature refrigerant supplied via the capillary tube 72 is supplied to the refrigerating cooler 52 and the state of the refrigerating cooling operation in which the low-temperature refrigerant supplied through the capillary tube 72 is supplied to the refrigerating cooler 54 without being supplied to the refrigerating cooler 52. , Switch.

この冷凍サイクル５０では、冷媒は、圧縮機５６で圧縮されて、高温高圧の気体状の冷媒に変化し、凝縮器５８と放熱パイプ６４と防露パイプ６６で放熱しながら液体状の冷媒となる。液体状の冷媒は、三方弁７０によって冷蔵キャピラリチューブ７２又は冷凍キャピラリチューブ７８に送られ、各キャピラリチューブ７２，７８で気化し易いように減圧され、その後に冷蔵冷却器５２又は冷凍冷却器５４で気化し、周囲から熱を奪うことにより冷気が発生する。周囲から熱を奪った冷媒は、各アキュムレータ７４，８０にそれぞれ流れ、各アキュムレータ７４，８０では気液混合体状の冷媒を気体状の冷媒と液体状の冷媒とにそれぞれ分離し、気体状の冷媒のみが各サクションパイプ７６、８２を経て圧縮機５６へ戻り、再び圧縮され高温高圧の気体状の冷媒となる。 In this refrigeration cycle 50, the refrigerant is compressed by the compressor 56, changed into a high-temperature and high-pressure gaseous refrigerant, and becomes a liquid refrigerant while radiating heat through the condenser 58, the heat dissipation pipe 64, and the dew-proof pipe 66. .. The liquid refrigerant is sent to the refrigerating capillary tube 72 or the refrigerating capillary tube 78 by the three-way valve 70, is depressurized so as to be easily vaporized in each of the capillary tubes 72 and 78, and then in the refrigerating condenser 52 or the refrigerating condenser 54. Cold air is generated by vaporizing and removing heat from the surroundings. The refrigerant that has taken heat from the surroundings flows to each of the accumulators 74 and 80, and each of the accumulators 74 and 80 separates the gas-liquid mixture-like refrigerant into a gaseous refrigerant and a liquid refrigerant, respectively. Only the refrigerant returns to the compressor 56 via the suction pipes 76 and 82 and is compressed again to become a high-temperature and high-pressure gaseous refrigerant.

次に、キャビネット２の具体的構成について、図面を参照しながら説明する。 Next, the specific configuration of the cabinet 2 will be described with reference to the drawings.

キャビネット２は、左側壁２ａ、右側壁２ｂ、天井壁２ｃ、底壁２ｄおよび背壁２ｅにおける断熱空間８に平板状の真空断熱材７ａ、７ｂ、７ｃ、７ｄ、７ｅが設けられ、機械室３４の周囲やキャビネット２の角部や、断熱仕切壁２８の内部等の真空断熱材が存在しない箇所に、発泡ウレタンや発泡スチロールや段ボール等の断熱材９とともに、放熱パイプ６４、防露パイプ６６、冷蔵キャピラリチューブ７２、冷蔵サクションパイプ７６、冷凍キャピラリチューブ７８及び冷凍サクションパイプ８２などの冷媒パイプや、キャビネット２の内側あるいは外側に設けられた電気部品と制御基板４６とを電気接続するリード線９０が設けられている。 The cabinet 2 is provided with flat vacuum heat insulating materials 7a, 7b, 7c, 7d, 7e in the heat insulating space 8 in the left side wall 2a, the right side wall 2b, the ceiling wall 2c, the bottom wall 2d, and the back wall 2e, and the machine room 34. Along with the heat insulating material 9 such as urethane foam, styrofoam, and cardboard, the heat radiating pipe 64, the dew-proof pipe 66, and the refrigerator are refrigerated in places where the vacuum heat insulating material does not exist, such as around the wall, the corner of the cabinet 2, and the inside of the heat insulating partition wall 28. A refrigerant pipe such as a capillary tube 72, a refrigerated suction pipe 76, a refrigerated capillary tube 78 and a refrigerated suction pipe 82, and a lead wire 90 for electrically connecting an electric component provided inside or outside the cabinet 2 and a control board 46 are provided. Has been done.

具体的には、キャビネット２の外郭を構成する鋼板製の外箱４は、左側板４ａ、右側板４ｂ、天板４ｃ、底板４ｄおよび背板４ｅを有する前面に開口した箱状をなしている。左側板４ａ、右側板４ｂ、天板４ｃは、一枚の長尺な鋼板をほぼＵ字状に折曲することにより形成されている。底板４ｄおよび背板４ｅは、左側板４ａ、右側板４ｂ、及び天板４ｃと別個に設けられた部材であり、底板４ｄには、機械室３４を形成するための段差部４ｄ−１が折曲形成されている。 Specifically, the steel plate outer box 4 constituting the outer shell of the cabinet 2 has a box shape open to the front having a left side plate 4a, a right side plate 4b, a top plate 4c, a bottom plate 4d, and a back plate 4e. .. The left side plate 4a, the right side plate 4b, and the top plate 4c are formed by bending one long steel plate into a substantially U shape. The bottom plate 4d and the back plate 4e are members provided separately from the left side plate 4a, the right side plate 4b, and the top plate 4c, and the bottom plate 4d has a stepped portion 4d-1 for forming the machine room 34. The song is formed.

また、図２に示すように、左側板４ａおよび右側板４ｂにおいて、前端部には、内方に突出するフランジ部４ａ−１および４ｂ−１が形成され、後端部には、前方に指向するフランジ部４ａ−２および４ｂ−２が形成されている。更に、背板４ｅの左右の両端部には、左側板４ａおよび右側板４ｂのフランジ部４ａ−２および４ｂ−２に挿入係合されるフランジ部４ｅ−１および４ｅ−２が形成されている。 Further, as shown in FIG. 2, in the left side plate 4a and the right side plate 4b, flange portions 4a-1 and 4b-1 projecting inward are formed at the front end portion, and the rear end portion is directed forward. Flange portions 4a-2 and 4b-2 are formed. Further, flange portions 4e-1 and 4e-2 that are inserted and engaged with the flange portions 4a-2 and 4b-2 of the left side plate 4a and the right side plate 4b are formed at both left and right ends of the back plate 4e. ..

合成樹脂製の内箱６は、真空成形機で一体成形されたもので、外箱４の左側板４ａ、右側板４ｂ、天板４ｃ、底板４ｄおよび背板４ｅとそれぞれ対向する左側板６ａ、右側板６ｂ、天板６ｃ、底板６ｄおよび背板６ｅを有する前面に開口した箱状をなしている。 The inner box 6 made of synthetic resin is integrally molded by a vacuum forming machine, and the left side plate 4a, the right side plate 4b, the top plate 4c, the bottom plate 4d, and the left side plate 6a facing the back plate 4e, respectively, of the outer box 4 It has a box shape with an opening on the front surface having a right side plate 6b, a top plate 6c, a bottom plate 6d, and a back plate 6e.

内箱６の底板６ｄには、外箱４の底板４ｄの段差部４ｄ−１に対応して機械室３４を形成するための段差部６ｄ−１が形成されている。内箱６の背板６ｅには、断熱仕切壁２８を形成する仕切部６ｆが内箱６の前面開口部に向けて突出している。この仕切部６ｆは、図５に示すように、内箱６の左側板６ａ、右側板６ｂ、背板６ｅ、後述する面取り部６ａｅ、６ｂｅに開口し、この開口を介して外箱４と内箱６との間に形成される断熱空間８と、断熱仕切壁２８の内部とが連通している。 The bottom plate 6d of the inner box 6 is formed with a step portion 6d-1 for forming the machine room 34 corresponding to the step portion 4d-1 of the bottom plate 4d of the outer box 4. On the back plate 6e of the inner box 6, a partition portion 6f forming a heat insulating partition wall 28 projects toward the front opening of the inner box 6. As shown in FIG. 5, the partition portion 6f is opened in the left side plate 6a, the right side plate 6b, the back plate 6e, and the chamfered portions 6ae and 6be described later of the inner box 6, and the outer box 4 and the inside are opened through the openings. The heat insulating space 8 formed between the box 6 and the inside of the heat insulating partition wall 28 communicate with each other.

内箱６の左側板６ａおよび右側板６ｂの前端部には、外箱４の左側板４ａおよび右側板４ｂのフランジ部４ａ−１および４ｂ−１に挿入係合されるフランジ部６ａ−１および６ｂ−１が形成されている。 At the front ends of the left side plate 6a and the right side plate 6b of the inner box 6, the flange portions 6a-1 and 4b-1 inserted and engaged with the flange portions 4a-1 and 4b-1 of the left side plate 4a and the right side plate 4b of the outer box 4 and 6b-1 is formed.

また、図１、図２、図５及び図７に示すように、内箱６の背板６ｅとこれに連なる他の板とがなす角部には、当該角部よりも内箱６の内方に突出する面取り部６ａｅ、６ｂｅ、６ｃｅが形成されている。具体的には、内箱６の左側板６ａと背板６ｅとがなす角部には、左側板６ａ及び背板６ｅを連結する面取り部６ａｅが上下方向に沿って設けられ、内箱６の右側板６ｂと背板６ｅとがなす角部には、右側板６ｂ及び背板６ｅを連結する面取り部６ｂｅが上下方向に沿って設けられ、内箱６の天板６ｃと背板６ｅとがなす角部には、天板６ｃ及び背板６ｅを連結する面取り部６ｃｅが冷蔵庫幅方向に沿って設けられている。 Further, as shown in FIGS. 1, 2, 5, and 7, the corner portion formed by the back plate 6e of the inner box 6 and another plate connected thereto is inside the inner box 6 rather than the corner portion. Chamfered portions 6ae, 6be, and 6ce protruding in the direction are formed. Specifically, a chamfered portion 6ae connecting the left side plate 6a and the back plate 6e is provided along the vertical direction at the corner portion formed by the left side plate 6a and the back plate 6e of the inner box 6, and the inner box 6 is provided with a chamfered portion 6ae. A chamfered portion 6be connecting the right side plate 6b and the back plate 6e is provided along the vertical direction at the corner portion formed by the right side plate 6b and the back plate 6e, and the top plate 6c and the back plate 6e of the inner box 6 are formed. A chamfered portion 6ce connecting the top plate 6c and the back plate 6e is provided at the corner portion along the width direction of the refrigerator.

冷蔵庫１に設けられた電気部品のうち、冷蔵室温度センサ１１、扉センサ２１、２４，２５、冷凍室温度センサ２６、冷蔵ファン５３、及び冷凍ファン５５等のキャビネット２の内側に設けられた電気部品や、圧縮機５６、冷却ファン５７、及び三方弁７０等のキャビネット２の外側に設けられた電気部品は、内箱６の面取り部６ａｅ、６ｂｅ、６ｃｅに沿わせて配置されたリード線９０によって、キャビネット２の天井壁２ｃの上面後部に設けられた制御基板４６に電気接続されている。 Among the electric components provided in the refrigerator 1, the electricity provided inside the cabinet 2 such as the refrigerating room temperature sensor 11, the door sensors 21, 24, 25, the freezing room temperature sensor 26, the refrigerating fan 53, and the refrigerating fan 55. The components and the electrical components provided on the outside of the cabinet 2 such as the compressor 56, the cooling fan 57, and the three-way valve 70 are lead wires 90 arranged along the chamfered portions 6ae, 6be, and 6ce of the inner box 6. Is electrically connected to the control board 46 provided at the rear of the upper surface of the ceiling wall 2c of the cabinet 2.

複数のリード線９０は、例えば、図５に示すように、天板６ｃ及び背板６ｅを連結する面取り部６ｃｅの外側（断熱空間８側）で２分割され、一方を右側板６ｂに向け、他方を左側板６ａに向けて面取り部６ｃｅに沿わせて配置されている。 As shown in FIG. 5, the plurality of lead wires 90 are divided into two on the outside of the chamfered portion 6ce (on the heat insulating space 8 side) connecting the top plate 6c and the back plate 6e, and one of them faces the right side plate 6b. The other side is arranged along the chamfered portion 6ce toward the left side plate 6a.

左側板６ａ又は右側板６ｂに向けて面取り部６ｃｅに沿わせて配置された複数のリード線９０は、面取り部６ｃｅの左端部又は右端部において下方に折れ曲がり面取り部６ａｅ、６ｂｅに沿わせて設けられている。面取り部６ａｅ、６ｂｅに沿わせて設けられた複数のリード線９０は、その一部が面取り部６ａｅ、６ｂｅに設けられた導入孔６ｂｅ−１から内箱６の内側に進入して冷蔵室温度センサ１１等のキャビネット２の内側に設けられた電気部品に接続され、残りが外箱４の段差部４ｄ−１を貫通して機械室３４に進入して圧縮機５６等のキャビネット２の外側に設けられた電気部品に接続される。 A plurality of lead wires 90 arranged along the chamfered portion 6ce toward the left side plate 6a or the right side plate 6b are provided along the chamfered portions 6ae and 6be by bending downward at the left end portion or the right end portion of the chamfered portion 6ce. Has been. A part of the plurality of lead wires 90 provided along the chamfered portions 6ae and 6be enters the inside of the inner box 6 from the introduction holes 6be-1 provided in the chamfered portions 6ae and 6be, and the refrigerating room temperature. It is connected to electrical components provided inside the cabinet 2 such as the sensor 11, and the rest penetrates the stepped portion 4d-1 of the outer box 4 and enters the machine room 34 to the outside of the cabinet 2 such as the compressor 56. It is connected to the provided electrical components.

そして、面取り部６ａｅ、６ｂｅ、６ｃｅに沿わせて配置された複数のリード線９０は、面取り部６ａｅ、６ｂｅ、６ｃｅの外側に貼付された保持具１００によって引き揃えられた状態で保持されている。 The plurality of lead wires 90 arranged along the chamfered portions 6ae, 6be, 6ce are held in a aligned state by the holder 100 attached to the outside of the chamfered portions 6ae, 6be, 6ce. ..

この保持具１００は、図６に例示すように、ループ状又はコイル状の起毛部１０２を備えた面ファスナ１０４と、面ファスナ１０４の起毛部１０２に係止するフック部１０６を備えた面ファスナ１０８とを備え、一対の面ファスナ１０４、１０８のいずれか一方が両面接着テープなどによって面取り部６ａｅ、６ｂｅ、６ｃｅの外側に貼付されている。 As shown in FIG. 6, the holder 100 has a hook-and-loop fastener 104 having a loop-shaped or coil-shaped raised portion 102 and a hook-and-loop fastener 104 having a hook portion 106 that engages with the raised portion 102 of the surface fastener 104. One of the pair of hook-and-loop fasteners 104 and 108 is attached to the outside of the chamfered portions 6ae, 6be and 6ce with a double-sided adhesive tape or the like.

この例では、面ファスナ１０８には、フック部１０６を間引いて形成された複数の収納部１１０が間隔をあけて平行に設けられており、これらの収納部１１０に引き揃えられたリード線９０が嵌まり込んだ状態で、面ファスナ１０８のフック部１０６が面ファスナ１０４の起毛部１０２に係止する。保持具１００は、収納部１１０の深さが保持具１００で保持するリード線９０の外径より大きく設定されており、一対の面ファスナ１０４，１０８の間でリード線９０を挟持することで、内箱６の面取り部６ａｅ、６ｂｅ、６ｃｅの外側にリード線９０を引き揃えた状態で沿わせて保持する。 In this example, the hook-and-loop fastener 108 is provided with a plurality of storage portions 110 formed by thinning out the hook portions 106 in parallel at intervals, and the lead wires 90 aligned with these storage portions 110 are provided. In the fitted state, the hook portion 106 of the hook-and-loop fastener 108 is locked to the raised portion 102 of the hook-and-loop fastener 104. In the holder 100, the depth of the storage portion 110 is set to be larger than the outer diameter of the lead wire 90 held by the holder 100, and the lead wire 90 is sandwiched between the pair of hook-and-loop fasteners 104 and 108. The lead wires 90 are held along the outside of the chamfered portions 6ae, 6be, and 6ce of the inner box 6 in a aligned state.

保持具１００によって内箱６の面取り部６ａｅ、６ｂｅ、６ｃｅに引き揃えた状態で設けられた複数のリード線９０は、図２に示すように、キャビネット２の背壁２ｅに設けられた真空断熱材７ｅと内箱６との間で前後方向に挟まれるように配置されてもよく、このような配置に加え、更に、キャビネット２の左側壁２ａ又は右側壁２ｂに設けられた真空断熱材７ａ、７ｂと内箱６との間で幅方向に挟まれるように配置されてもよい。このような配置により、内箱６に沿わせて設けられ庫内の冷熱によって冷却されやすいリード線９０の外側を真空断熱材７ａ、７ｂ、７ｅで覆うことができるため、外部への冷熱漏洩を抑えることができるとともに、キャビネット２の角部における結露の発生を抑えることができる。 As shown in FIG. 2, the plurality of lead wires 90 provided in a state of being aligned with the chamfered portions 6ae, 6be, and 6ce of the inner box 6 by the holder 100 are vacuum heat insulating provided on the back wall 2e of the cabinet 2. It may be arranged so as to be sandwiched between the material 7e and the inner box 6 in the front-rear direction, and in addition to such an arrangement, the vacuum heat insulating material 7a provided on the left side wall 2a or the right side wall 2b of the cabinet 2 is further provided. , 7b and the inner box 6 may be arranged so as to be sandwiched in the width direction. With such an arrangement, the outside of the lead wire 90 provided along the inner box 6 and easily cooled by the cold heat in the refrigerator can be covered with the vacuum heat insulating materials 7a, 7b, 7e, so that the cold heat leakage to the outside can be prevented. It is possible to suppress the occurrence of dew condensation at the corners of the cabinet 2.

そして、冷凍サイクル５０の冷蔵キャピラリチューブ７２及び冷蔵サクションパイプ７６は、ロウ付けなどによって互いに熱交換可能に一体化され冷蔵パイプ体７３を構成する。 Then, the refrigerated capillary tube 72 and the refrigerated suction pipe 76 of the refrigerating cycle 50 are integrated so as to be heat exchangeable with each other by brazing or the like to form the refrigerated pipe body 73.

この冷蔵パイプ体７３は、図７に示すように、内箱６の内側において背板６ｅに沿わせて設けられた冷蔵冷却器５２から背板６ｅに設けられた導出孔６ｅ−１を通って断熱空間８内に進入し、左右一方の面取り部、この例では、内箱６の左側板６ａ及び背板６ｅを連結する面取り部６ａｅの外側（断熱空間８側）まで引き出される。面取り部６ａｅの外側に引き出された冷蔵パイプ体７３は、面取り部６ａｅに沿って上昇した後、面取り部６ｃｅに沿って幅方向反対側（正面から見て右側）の面取り部６ｂｅに向かって延び、更に、下方に折れ曲がり面取り部６ｂｅに沿って下降し、外箱４の底板４ｄの段差部４ｄ−１を貫通して機械室３４へ進入する。 As shown in FIG. 7, the refrigerating pipe body 73 passes from a refrigerating cooler 52 provided along the back plate 6e inside the inner box 6 through a lead-out hole 6e-1 provided in the back plate 6e. It enters the heat insulating space 8 and is pulled out to one of the left and right chamfered portions, in this example, the outside of the chamfered portion 6ae connecting the left side plate 6a and the back plate 6e of the inner box 6 (the heat insulating space 8 side). The refrigerated pipe body 73 pulled out to the outside of the chamfered portion 6ae rises along the chamfered portion 6ae and then extends along the chamfered portion 6ce toward the chamfered portion 6be on the opposite side in the width direction (right side when viewed from the front). Further, it bends downward and descends along the chamfered portion 6be, penetrates the stepped portion 4d-1 of the bottom plate 4d of the outer box 4, and enters the machine room 34.

そして、機械室３４に進入した冷蔵パイプ体７３は、冷蔵キャピラリチューブ７２が三方弁７０の一方の出口に接続され、冷蔵サクションパイプ７６が圧縮機５６の吸入側に接続される。 Then, in the refrigerating pipe body 73 that has entered the machine room 34, the refrigerating capillary tube 72 is connected to one outlet of the three-way valve 70, and the refrigerating suction pipe 76 is connected to the suction side of the compressor 56.

なお、図７は、内箱６を背面から見ているため、冷蔵パイプ体７３の左右方向の向きが逆転している。また、図７では、内箱６の面取り部６ａｅ、６ｂｅ、６ｃｅに沿わせて設けた複数のリード線９０と保持具１００を省略している。 Since the inner box 6 is viewed from the back in FIG. 7, the orientation of the refrigerating pipe body 73 in the left-right direction is reversed. Further, in FIG. 7, a plurality of lead wires 90 and a holder 100 provided along the chamfered portions 6ae, 6be, and 6ce of the inner box 6 are omitted.

また、冷凍サイクル５０の冷凍キャピラリチューブ７８及び冷凍サクションパイプ８２も、冷蔵キャピラリチューブ７２及び冷蔵サクションパイプ７６と同様、ロウ付けなどによって互いに熱交換可能に一体化され冷凍パイプ体７９を構成する。この冷凍パイプ体７９は、冷凍冷却器室４０の上方を区画する断熱仕切壁２８を通って断熱空間８へ進入する。 Further, the refrigerated capillary tube 78 and the refrigerated suction pipe 82 of the refrigerating cycle 50 are also integrated so as to be heat exchangeable with each other by brazing or the like, like the refrigerated capillary tube 72 and the refrigerated suction pipe 76, to form the refrigerated pipe body 79. The freezing pipe body 79 enters the heat insulating space 8 through the heat insulating partition wall 28 that partitions the upper part of the freezing cooler chamber 40.

つまり、冷凍パイプ体７９は、内箱６の内側において背板６ｅに沿わせて設けられた冷凍冷却器５４からキャビネット２の断熱仕切壁２８を形成する内箱６の仕切部６ｆの下面に設けられた導出孔６ｆ−１を通って断熱仕切壁２８内に進入する。 That is, the refrigerating pipe body 79 is provided inside the inner box 6 on the lower surface of the partition portion 6f of the inner box 6 forming the heat insulating partition wall 28 of the cabinet 2 from the refrigerating cooler 54 provided along the back plate 6e. It enters the heat insulating partition wall 28 through the lead-out hole 6f-1.

導出孔６ｆ−１から断熱仕切壁２８内に進入した冷凍パイプ体７９は、断熱仕切壁２８において冷蔵温度帯の貯蔵室より冷凍温度帯の貯蔵室に近接する側（この例では断熱仕切壁２８の下側）を通って、上記した冷蔵パイプ体７３が引き出された左右一方の面取り部と反対側の面取り部、この例では、内箱６の右側板６ｂ及び背板６ｅを連結する面取り部６ｂｅの外側（断熱空間８側）まで引き出される。 The refrigerating pipe body 79 that has entered the heat insulating partition wall 28 from the lead-out hole 6f-1 is located on the heat insulating partition wall 28 closer to the storage room in the refrigerating temperature zone than the storage room in the refrigerating temperature zone (in this example, the heat insulating partition wall 28). The chamfered portion on the opposite side of the left and right chamfered portions from which the refrigerated pipe body 73 was pulled out through the lower side), in this example, the chamfered portion connecting the right side plate 6b and the back plate 6e of the inner box 6. It is pulled out to the outside of 6be (insulation space 8 side).

面取り部６ｂｅの外側に引き出された冷凍パイプ体７９は、上方に向けて折り曲げられ面取り部６ｂｅの外側に沿って上昇し、当該面取り部６ｂｅの上端部において下方に折り曲げられる。その際、当該面取り部６ｂｅの上端部では、冷凍パイプ体７９が冷蔵庫幅方向外側から内側に向かって折り曲げられている。これにより、面取り部６ｂｅの外側には、冷凍冷却器５４に近接する上流側冷凍サクションパイプ８２ａが、これより下流側（圧縮機５６側）に位置する下流側冷凍サクションパイプ８２ｂより冷蔵庫幅方向外側に配置され、上流側冷凍サクションパイプ８２ａ及び下流側冷凍サクションパイプ８２ｂが上下方向に並走している。 The freezing pipe body 79 pulled out to the outside of the chamfered portion 6be is bent upward, rises along the outside of the chamfered portion 6be, and is bent downward at the upper end portion of the chamfered portion 6be. At that time, at the upper end of the chamfered portion 6be, the refrigerating pipe body 79 is bent from the outside to the inside in the width direction of the refrigerator. As a result, on the outside of the chamfering portion 6be, the upstream refrigerating suction pipe 82a close to the refrigerating cooler 54 is located on the downstream side (compressor 56 side) of the downstream refrigerating suction pipe 82b. The upstream side freezing suction pipe 82a and the downstream side freezing suction pipe 82b run in parallel in the vertical direction.

そして、このように面取り部６ｂｅの外側に沿って設けられた冷凍パイプ体７９は、外箱４の底板４ｄの段差部４ｄ−１を貫通して機械室３４へ進入する。機械室３４に進入した冷凍パイプ体７９は、冷凍キャピラリチューブ７８が三方弁７０の他方の出口に接続され、冷凍サクションパイプ８２が逆止弁８４を介して圧縮機５６の吸入側に接続される。 Then, the refrigerating pipe body 79 provided along the outside of the chamfered portion 6be penetrates the stepped portion 4d-1 of the bottom plate 4d of the outer box 4 and enters the machine room 34. In the refrigerating pipe body 79 that has entered the machine room 34, the refrigerating capillary tube 78 is connected to the other outlet of the three-way valve 70, and the refrigerating suction pipe 82 is connected to the suction side of the compressor 56 via the check valve 84. ..

冷蔵水受部３１に接続された冷蔵排水ホース３３は、図７に示すように、背板６ｅにおいて導出孔６ｅ−１の下方に設けられた導出孔６ｅ−２を通って断熱空間８内に進入し、冷蔵パイプ体７３が引き出された左右一方の面取り部６ａｅ（つまり、冷凍パイプ体７９が引き出された左右他方の面取り部６ｂｅと反対側の面取り部６ａｅ）の外面まで引き出される。面取り部６ａｅの外面に引き出された冷蔵排水ホース３３は、面取り部６ａｅに沿って下降し、外箱４の底板４ｄの段差部４ｄ−１を貫通して機械室３４へ進入する。 As shown in FIG. 7, the refrigerated drain hose 33 connected to the refrigerated water receiving portion 31 passes through the outlet hole 6e-2 provided below the outlet hole 6e-1 in the back plate 6e and enters the heat insulating space 8. It enters and is pulled out to the outer surface of one of the left and right chamfered portions 6ae from which the refrigerated pipe body 73 is pulled out (that is, the chamfered portion 6ae on the opposite side of the left and right other chamfered portion 6be from which the refrigerated pipe body 79 is pulled out). The refrigerated drain hose 33 drawn out to the outer surface of the chamfered portion 6ae descends along the chamfered portion 6ae, penetrates the stepped portion 4d-1 of the bottom plate 4d of the outer box 4, and enters the machine room 34.

なお、本実施形態では、内箱６の面取り部６ａｅ、６ｂｅ、６ｃｅの外側に沿って設けられた冷蔵パイプ体７３及び冷凍パイプ体７９が、内箱６の面取り部６ａｅ、６ｂｅの外側に固定された発泡スチロールなどの断熱材を所定形状に成型した断熱固定具１３０、１４０によって、面取り部６ａｅ、６ｂｅ、６ｃｅから所定間隔をあけて断熱空間８に設けられている（図２、図７、図８参照）。 In the present embodiment, the refrigerating pipe body 73 and the refrigerating pipe body 79 provided along the outside of the chamfered portions 6ae, 6be, 6ce of the inner box 6 are fixed to the outside of the chamfered portions 6ae, 6be, 6be of the inner box 6. Heat insulating fixtures 130 and 140 obtained by molding a heat insulating material such as Styrofoam into a predetermined shape are provided in the heat insulating space 8 at predetermined intervals from the chamfered portions 6ae, 6be and 6ce (FIGS. 2, 7 and 7). 8).

具体的には、内箱６の仕切部６ｆより上方に設けられた断熱固定具１３０は、図２に示すように、内箱６の面取り部６ａｅ、６ｂｅの断熱空間８側に対向して配置される基部１３２と、基部１３２から左右側板６ａ、６ｂの断熱空間８側に沿って延びる延出部１３４とを備える。断熱固定具１３０は、基部１３２及び延出部１３４に設けられた両面接着テープなどに接着剤により内箱６に固定され、基部１３２の外側に設けられた溝１３６によって冷蔵パイプ体７３や冷凍パイプ体７９を保持する。この時、互いに平行して並ぶ冷蔵パイプ体７３と冷凍パイプ体７９とをインジェクション部品を用いてパイプ体同士を互いに固定してから、断熱固定具１３０に保持させても良い。これにより、パイプ体７３、７９を一体に扱って適切な位置に配設できるため、製造性を向上させることができる。 Specifically, the heat insulating fixture 130 provided above the partition portion 6f of the inner box 6 is arranged so as to face the heat insulating space 8 side of the chamfered portions 6ae and 6be of the inner box 6 as shown in FIG. The base portion 132 is provided, and the extension portion 134 extending from the base portion 132 along the heat insulating space 8 side of the left and right side plates 6a and 6b is provided. The heat insulating fixture 130 is fixed to the inner box 6 with an adhesive on double-sided adhesive tapes provided on the base 132 and the extension 134, and the refrigerating pipe body 73 and the refrigerating pipe are fixed by the grooves 136 provided on the outside of the base 132. Holds body 79. At this time, the refrigerating pipe bodies 73 and the refrigerating pipe bodies 79 arranged in parallel with each other may be fixed to each other by using injection parts and then held by the heat insulating fixture 130. As a result, the pipe bodies 73 and 79 can be integrally handled and arranged at an appropriate position, so that the manufacturability can be improved.

また、内箱６の仕切部６ｆに設けられた断熱固定具１４０は、図８に示すように、内箱６の面取り部６ｂｅの外側に対向して配置される基部１４２と、基部１４２から内箱６側に突出する挿入部１４４とを備え、挿入部１４４が面取り部６ｂｅに開口する開口部より仕切部６ｆに挿入されることで内箱６に固定される。基部１４２の断熱空間８側には、湾曲溝１４６と直線溝１４８が設けられている。この断熱固定具１４０は、湾曲溝１４６に断熱仕切壁２８を通って面取り部６ｂｅの外側に引き出され冷凍パイプ体７９において上方に向けて折り曲げられた部分が収納され、直線溝１４８に下流側冷凍サクションパイプ８２ｂを有する冷凍パイプ体７９と冷蔵パイプ体７３が収納されている。 Further, as shown in FIG. 8, the heat insulating fixture 140 provided in the partition portion 6f of the inner box 6 has a base portion 142 arranged to face the outside of the chamfered portion 6be of the inner box 6 and an inner portion from the base portion 142. It is provided with an insertion portion 144 protruding toward the box 6, and the insertion portion 144 is fixed to the inner box 6 by being inserted into the partition portion 6f through an opening opening to the chamfer portion 6be. A curved groove 146 and a straight groove 148 are provided on the heat insulating space 8 side of the base portion 142. The heat insulating fixture 140 is pulled out to the outside of the chamfered portion 6be through the heat insulating partition wall 28 in the curved groove 146, and the portion bent upward in the refrigerating pipe body 79 is housed in the straight groove 148. A freezing pipe body 79 having a suction pipe 82b and a refrigerating pipe body 73 are stored.

このように断熱材からなる断熱固定具１３０，１４０によって内箱６から離して冷蔵パイプ体７３及び冷凍パイプ体７９を断熱空間８に設けることで、冷蔵パイプ体７３が有する冷蔵サクションパイプ７６や、冷凍パイプ体７９が有する冷凍サクションパイプ８２の冷熱が内箱６に伝導しにくくなり、内箱６の内側における結露の発生を抑えることができる。 By providing the refrigerating pipe body 73 and the refrigerating pipe body 79 in the heat insulating space 8 apart from the inner box 6 by the heat insulating fixtures 130 and 140 made of the heat insulating material in this way, the refrigerated suction pipe 76 of the refrigerated pipe body 73 and the refrigerated suction pipe 76 can be obtained. The cold heat of the refrigerating suction pipe 82 of the refrigerating pipe body 79 is less likely to be conducted to the inner box 6, and the occurrence of dew condensation inside the inner box 6 can be suppressed.

なお、上記のように冷蔵パイプ体７３や冷凍パイプ体７９を面取り部６ａｅ、６ｂｅ、６ｃｅから所定間隔をあけて断熱空間８に設ける際に、冷蔵パイプ体７３が有する冷蔵サクションパイプ７６や、冷凍パイプ体７９が有する冷凍サクションパイプ８２は、キャビネット２の左側壁２ａや右側壁２ｂや背壁２ｅに設けられた真空断熱材７ａ、７ｂ、７ｅに接触せず所定の間隔をあけて断熱空間８に配置することが好ましい。このように冷蔵サクションパイプ７６や冷凍サクションパイプ８２が真空断熱材７ａ、７ｂ、７ｅに接触しないように配置することで、冷蔵サクションパイプ７６や冷凍サクションパイプ８２の冷熱が、真空断熱材７ａ、７ｂ、７ｅの外皮を構成する金属膜層を介して真空断熱材７ａ、７ｂ、７ｅに接触する外箱４に伝導しにくくなり、外箱４表面における結露の発生を抑えることができる。 When the refrigerated pipe body 73 and the refrigerated pipe body 79 are provided in the heat insulating space 8 at predetermined intervals from the chamfered portions 6ae, 6be, and 6ce as described above, the refrigerated suction pipe 76 and the refrigerated pipe body 73 of the refrigerated pipe body 73 and the refrigerated pipe body 73 are frozen. The refrigerating suction pipe 82 included in the pipe body 79 does not come into contact with the vacuum heat insulating materials 7a, 7b, 7e provided on the left side wall 2a, the right side wall 2b, and the back wall 2e of the cabinet 2, and the heat insulating space 8 is spaced apart from each other. It is preferable to arrange it in. By arranging the refrigerated suction pipe 76 and the frozen suction pipe 82 so as not to come into contact with the vacuum heat insulating materials 7a, 7b and 7e, the cold heat of the refrigerated suction pipe 76 and the frozen suction pipe 82 can be transferred to the vacuum heat insulating materials 7a and 7b. , It becomes difficult to conduct to the outer box 4 in contact with the vacuum heat insulating materials 7a, 7b, 7e through the metal film layer constituting the outer skin of 7e, and the occurrence of dew condensation on the surface of the outer box 4 can be suppressed.

また、本実施形態では、断熱固定具１３０、１４０に冷蔵パイプ体７３や冷凍パイプ体７９を保持させたが、これに加えて断熱空間８に設けられたリード線９０や冷蔵排水ホース３３を保持させもよい。その際、リード線９０や冷蔵排水ホース３３は、上流側冷凍サクションパイプ８２ａを有する冷凍パイプ体７９より下流側冷凍サクションパイプ８２ｂを有する冷凍パイプ体７９に近接させて断熱固定具１３０，１４０に保持させることが好ましい。これにより、リード線９０や冷蔵排水ホース３３は、冷凍冷却器５４から流れ出て間もない比較的低温の冷媒が流れる上流側冷凍サクションパイプ８２ａの冷熱の影響を受けにくくなり、リード線９０が冷却されることにより内箱６に生じる結露の発生を抑えたり、冷蔵排水ホース３３を流れる除霜水の凍結を抑えることができる。 Further, in the present embodiment, the heat insulating fixtures 130 and 140 hold the refrigerated pipe body 73 and the refrigerated pipe body 79, but in addition, the lead wire 90 and the refrigerated drain hose 33 provided in the heat insulating space 8 are held. You may let it. At that time, the lead wire 90 and the refrigerated drain hose 33 are held in the heat insulating fixtures 130 and 140 closer to the freezing pipe body 79 having the downstream freezing suction pipe 82b than the freezing pipe body 79 having the upstream freezing suction pipe 82a. It is preferable to let it. As a result, the lead wire 90 and the refrigerated drain hose 33 are less likely to be affected by the cold heat of the upstream refrigerating suction pipe 82a through which the relatively low-temperature refrigerant that has just flowed out of the refrigerating cooler 54 flows, and the lead wire 90 is cooled. By doing so, it is possible to suppress the occurrence of dew condensation that occurs in the inner box 6 and to suppress the freezing of the defrost water flowing through the refrigerated drain hose 33.

放熱パイプ６４および防露パイプ６６は、外箱４と接触するようにキャビネット２の断熱空間８内に埋設されている。この例では、図２及び図９に示すように、放熱パイプ６４は、機械室３４から外箱４の段差部４ｄ−１を貫通して断熱空間８内に進入し、外箱４の背板４ｅに沿って配される背板放熱パイプ６４Ａと、右側板４ｂに沿って配される右放熱パイプ６４Ｂと、天板４ｃに沿って配される天井放熱パイプ６４Ｃと、左側板４ａに沿って配される左放熱パイプ６４Ｄとから構成されている。凝縮器５８から流れ出た高温高圧の冷媒は、背板放熱パイプ６４Ａ、右放熱パイプ６４Ｂ、天井放熱パイプ６４Ｃ、左放熱パイプ６４Ｄの順に流れ、その後、防露パイプ６６を通って機械室３４に設けられたドライヤ６８に流れ込む。 The heat radiating pipe 64 and the dew-proof pipe 66 are embedded in the heat insulating space 8 of the cabinet 2 so as to be in contact with the outer box 4. In this example, as shown in FIGS. 2 and 9, the heat radiating pipe 64 penetrates the stepped portion 4d-1 of the outer box 4 from the machine room 34 and enters the heat insulating space 8, and the back plate of the outer box 4 A back plate heat radiating pipe 64A arranged along 4e, a right heat radiating pipe 64B arranged along the right side plate 4b, a ceiling heat radiating pipe 64C arranged along the top plate 4c, and a left side plate 4a. It is composed of a left heat dissipation pipe 64D arranged. The high-temperature and high-pressure refrigerant flowing out of the condenser 58 flows in the order of the back plate heat dissipation pipe 64A, the right heat dissipation pipe 64B, the ceiling heat dissipation pipe 64C, and the left heat dissipation pipe 64D, and then is provided in the machine room 34 through the dew-proof pipe 66. It flows into the dried dryer 68.

背板放熱パイプ６４Ａ、右放熱パイプ６４Ｂ、及び左放熱パイプ６４Ｄは、真空断熱材７ｅ、７ｂ、７ａの外箱４側に設けられた凹溝７ｅ−１、７ｂ−１、７ａ−１に収納され、真空断熱材７ｅ，７ｂ、７ａの外側を覆う外箱４の背板４ｅ、右側板４ｂ、左側板４ａと接触する。天井放熱パイプ６４Ｃは、天井壁２ｃの断熱空間８に配設された真空断熱材７ｃと外箱４の天板４ｃとの間に設けられ断熱材９内に天板４ｃと接触するように埋設されている。 The back plate heat radiation pipe 64A, the right heat radiation pipe 64B, and the left heat radiation pipe 64D are housed in the recessed grooves 7e-1, 7b-1, 7a-1 provided on the outer box 4 side of the vacuum heat insulating materials 7e, 7b, 7a. Then, it comes into contact with the back plate 4e, the right side plate 4b, and the left side plate 4a of the outer box 4 that covers the outside of the vacuum heat insulating materials 7e, 7b, and 7a. The ceiling heat radiating pipe 64C is provided between the vacuum heat insulating material 7c arranged in the heat insulating space 8 of the ceiling wall 2c and the top plate 4c of the outer box 4, and is buried in the heat insulating material 9 so as to come into contact with the top plate 4c. Has been done.

なお、背板放熱パイプ６４Ａ、右放熱パイプ６４Ｂ、及び左放熱パイプ６４Ｄは、断熱空間８において真空断熱材７ｅ，７ｂ，７ａの外側（外箱４側）であって、その周縁部に近接させて配置してもよい。キャビネット２の左右側壁２ａ、２ｂの前端部や、左右側壁２ａ、２ｂと背壁２ｅとの角部は、真空断熱材を設けることが困難であり、真空断熱材で覆われた箇所に比べて断熱性能を確保しにくいが、背板放熱パイプ６４Ａ、右放熱パイプ６４Ｂ、及び左放熱パイプ６４Ｄを真空断熱材７ｅ，７ｂ，７ａの外側の周縁部に近接配置することで、断熱性能が確保しにくいキャビネット２の前端部や角部において結露の発生を抑えることができる。 The back plate heat radiating pipe 64A, the right heat radiating pipe 64B, and the left heat radiating pipe 64D are outside the vacuum heat insulating materials 7e, 7b, 7a (outer box 4 side) in the heat insulating space 8 and are brought close to the peripheral edges thereof. May be placed. It is difficult to provide the vacuum heat insulating material on the front ends of the left and right side walls 2a and 2b of the cabinet 2 and the corners of the left and right side walls 2a and 2b and the back wall 2e, as compared with the parts covered with the vacuum heat insulating material. Although it is difficult to secure the heat insulating performance, the heat insulating performance is ensured by arranging the back plate heat radiating pipe 64A, the right heat radiating pipe 64B, and the left heat radiating pipe 64D close to the outer peripheral edge of the vacuum heat insulating materials 7e, 7b, 7a. It is possible to suppress the occurrence of dew condensation at the front end and corners of the difficult cabinet 2.

防露パイプ６６は、結露が生じやすい扉周囲としてキャビネット２の前面開口部に配設されており、その凝縮熱により扉周囲の露付きを抑制している。 The dew-proof pipe 66 is arranged in the front opening of the cabinet 2 as the periphery of the door where dew condensation is likely to occur, and the heat of condensation suppresses dew condensation around the door.

しかして、図１及び図２に示すように、外箱４の左側板４ａ、右側板４ｂ、背板４ｅの内面には、左放熱パイプ６４Ｄ、右放熱パイプ６４Ｂ、背板放熱パイプ６４Ａを凹溝７ａ−１、７ｂ−１、７ｅ−１に収納した状態で面接着テープ或いはホットメルトなどの接着剤により真空断熱材７ａ、７ｂ、７ｅが接着され、外箱４の天板４ｃの内面には、天井放熱パイプ６４Ｃが金属箔テープなどにより固定されている。また、内箱６の天板６ｃおよび底板６ｄの外面には、両面接着テープ或いはホットメルトなどの接着剤により真空断熱材７ｃ、７ｄが接着されている。 As shown in FIGS. 1 and 2, the left heat radiation pipe 64D, the right heat radiation pipe 64B, and the back plate heat radiation pipe 64A are recessed on the inner surfaces of the left side plate 4a, the right side plate 4b, and the back plate 4e of the outer box 4. The vacuum heat insulating materials 7a, 7b, 7e are adhered to the inner surface of the top plate 4c of the outer box 4 with an adhesive such as a surface adhesive tape or hot melt while being housed in the grooves 7a-1, 7b-1, 7e-1. The ceiling heat radiation pipe 64C is fixed with a metal foil tape or the like. Further, the vacuum heat insulating materials 7c and 7d are adhered to the outer surfaces of the top plate 6c and the bottom plate 6d of the inner box 6 with an adhesive such as double-sided adhesive tape or hot melt.

そして、外箱４の左側板４ａ、右側板４ｂ及び天板４ｃの内側に内箱６を配置して、内箱６の左側板６ａおよび右側板６ｂのフランジ部６ａ−１ａおよび６ｂ−１ａを外箱４の左側板４ａおよび右側板４ｂのフランジ部４ａ−１および４ｂ−１に挿入係合させる。 Then, the inner box 6 is arranged inside the left side plate 4a, the right side plate 4b, and the top plate 4c of the outer box 4, and the flange portions 6a-1a and 6b-1a of the left side plate 6a and the right side plate 6b of the inner box 6 are arranged. It is inserted and engaged with the flange portions 4a-1 and 4b-1 of the left side plate 4a and the right side plate 4b of the outer box 4.

その後、内箱６の面取り部６ａｅ、６ｂｅ、６ｃｅには、保持具１００が貼付され、複数のリード線９０が保持具１００によって引き揃えられた状態で配線される。そして、リード線９０の配線後、断熱固定具１３０、１４０を用いて冷蔵パイプ体７３と冷凍パイプ体７９を内箱６の面取り部６ａｅ、６ｂｅ、６ｃｅの外側に所定間隔あけて配置するとともに、冷蔵パイプ体７３を内箱６の背板６ｅに設けられた導出孔６ｅ−１を通して内箱６の断熱空間８側から庫内側の冷蔵冷却器室３６へ挿入し、冷凍パイプ体７９を内箱６の仕切部６ｆの下面に沿わせた後、導出孔６ｆ−１を通して庫内側の冷凍冷却器室４０へ挿入する。 After that, the holder 100 is attached to the chamfered portions 6ae, 6be, and 6ce of the inner box 6, and the plurality of lead wires 90 are wired in a state of being aligned by the holder 100. Then, after wiring the lead wire 90, the refrigerating pipe body 73 and the refrigerating pipe body 79 are arranged outside the chamfered portions 6ae, 6be, 6ce of the inner box 6 at predetermined intervals by using the heat insulating fixtures 130 and 140. The refrigerating pipe body 73 is inserted into the refrigerating cooler chamber 36 inside the refrigerator through the lead-out hole 6e-1 provided in the back plate 6e of the inner box 6 from the heat insulating space 8 side of the inner box 6, and the refrigerating pipe body 79 is inserted into the inner box. After lining the lower surface of the partition portion 6f of No. 6, it is inserted into the refrigerating / cooling chamber 40 inside the refrigerator through the lead-out hole 6f-1.

そして、外箱４の底板４ｄを外箱４の左側板４ａ及び右側板４ｂに取り付け、更に、外箱４の背板４ｅを左側板４ａ、右側板４ｂ、底板４ｄに取り付けて背板４ｅに設けられた真空断熱材７ｅを内箱６の背板６ｅの外面に圧接させる。 Then, the bottom plate 4d of the outer box 4 is attached to the left side plate 4a and the right side plate 4b of the outer box 4, and further, the back plate 4e of the outer box 4 is attached to the left side plate 4a, the right side plate 4b, and the bottom plate 4d to the back plate 4e. The provided vacuum heat insulating material 7e is pressed against the outer surface of the back plate 6e of the inner box 6.

その後、外箱４及び内箱６の前面開口部を下方に向けつつ、内箱６内に発泡治具を嵌め込んだ状態にして、外箱４の背板４ｅに設けられた不図示の注入孔から発泡ウレタン等の発泡断熱材の原液を注入し、断熱空間８において真空断熱材７ａ，７ｂ，７ｃ，７ｄ，７ｅが存在しない箇所に断熱材９を発泡充填することで、キャビネット２が形成される。 After that, while the front openings of the outer box 4 and the inner box 6 are directed downward, the foaming jig is fitted in the inner box 6, and the injection (not shown) provided on the back plate 4e of the outer box 4 is performed. The cabinet 2 is formed by injecting a stock solution of a foam heat insulating material such as urethane foam from the holes and foaming and filling the heat insulating material 9 in the heat insulating space 8 where the vacuum heat insulating materials 7a, 7b, 7c, 7d and 7e do not exist. Will be done.

本実施形態では、冷凍サクションパイプ８２が冷凍冷却器５４から冷却器室４０の上方を区画している断熱仕切壁２８の内部を通って断熱空間８へ進入するように配管されているため、キャビネット２の背壁２ｅ内部を通ることなく左右側壁２ａ、２ｂと背壁２ｅとで形成された断熱空間８の角部へ冷凍サクションパイプ８２を配管することができる。そのため、背壁２ｅの広範囲に真空断熱材７ｅを設けることができ、断熱性能を確保しつつ背壁２ｅの厚みを抑えることができ、設置スペースに対する内容積の大容量化を図ることができる。 In the present embodiment, the freezing suction pipe 82 is piped so as to enter the heat insulating space 8 from the freezing cooler 54 through the inside of the heat insulating partition wall 28 that divides the upper part of the cooler chamber 40. The freezing suction pipe 82 can be piped to the corner of the heat insulating space 8 formed by the left and right side walls 2a and 2b and the back wall 2e without passing through the inside of the back wall 2e of 2. Therefore, the vacuum heat insulating material 7e can be provided over a wide range of the back wall 2e, the thickness of the back wall 2e can be suppressed while ensuring the heat insulating performance, and the internal volume with respect to the installation space can be increased.

また、本実施形態では、冷凍サクションパイプ８２が、キャビネット２の右側壁２ｂと背壁２ｅとで形成された断熱空間８の角部において上下に折り返されており、内箱６を介して貯蔵室と対向する左側壁２ａ、右側壁２ｂ、背壁２ｅ等の断熱空間８に冷凍サクションパイプ８２が配設されることがない。そのため、キャビネット２の断熱性能に比較的影響が大きい内箱６を介して貯蔵室と対向する位置に真空断熱材を広範囲に設けつつ、冷凍サクションパイプ８２は、内部を流れる冷媒が温度上昇するために必要な長さを確保することができる。 Further, in the present embodiment, the freezing suction pipe 82 is folded up and down at the corner of the heat insulating space 8 formed by the right side wall 2b and the back wall 2e of the cabinet 2, and is folded up and down through the inner box 6. The freezing suction pipe 82 is not arranged in the heat insulating space 8 such as the left side wall 2a, the right side wall 2b, and the back wall 2e facing the same. Therefore, the temperature of the refrigerant flowing inside the refrigerating suction pipe 82 rises while the vacuum heat insulating material is widely provided at a position facing the storage chamber via the inner box 6 which has a relatively large influence on the heat insulating performance of the cabinet 2. The required length can be secured.

また、本実施形態では、冷凍サイクル５０が有する冷蔵冷却器５２で生成された除霜水をキャビネット２の外側へ排水する冷蔵排水ホース３３を、冷凍サクションパイプ８２が配設された断熱空間８の角部と異なる角部に設けており、冷蔵排水ホース３３が冷凍冷却器５４から流れ出た直後の比較的低温の冷媒が流れる冷凍サクションパイプ８２と並走することがないため、冷蔵排水ホース３３を流れる除霜水がホース内で凍結するおそれがない。 Further, in the present embodiment, the refrigerating drain hose 33 for draining the defrosted water generated by the refrigerating cooler 52 included in the refrigerating cycle 50 to the outside of the cabinet 2 is provided in the heat insulating space 8 in which the refrigerating suction pipe 82 is arranged. Since the refrigerating drain hose 33 is provided at a corner different from the corner and does not run in parallel with the refrigerating suction pipe 82 through which the relatively low temperature refrigerant flows immediately after flowing out from the refrigerating cooler 54, the refrigerating drain hose 33 is provided. There is no risk of the flowing defrost water freezing in the hose.

また，本実施形態では、断熱仕切壁２８内部に設けられた冷凍サクションパイプ８２が、断熱仕切壁２８内部を冷蔵温度帯の貯蔵室より冷凍温度帯の貯蔵室に近接する側を通って面取り部６ｂｅの外側の断熱空間８まで引き出されるため、冷凍冷却器５４から流れ出て間もない冷凍温度帯に近い温度の冷媒が冷凍サクションパイプ８２に流れても、断熱仕切壁２８において結露が発生しにくい。 Further, in the present embodiment, the refrigerating suction pipe 82 provided inside the heat insulating partition wall 28 passes through the inside of the heat insulating partition wall 28 from the storage chamber in the refrigerating temperature zone closer to the storage chamber in the refrigerating temperature zone to the chamfered portion. Since it is drawn out to the heat insulating space 8 outside the 6be, even if the refrigerant having a temperature close to the freezing temperature zone that has just flowed out from the refrigerating cooler 54 flows into the refrigerating suction pipe 82, dew condensation is unlikely to occur on the heat insulating partition wall 28. ..

更にまた、本実施形態では、上流側冷凍サクションパイプ８２ａが下流側冷凍サクションパイプ８２ｂより冷蔵庫の幅方向外側に配置されているため、内箱６の背板６ｅとこれに連なる他の板とがなす角部に内箱６の内方に突出する面取り部６ｂｅを設けることで、冷凍冷却器５４から流れ出て間もない比較的低温の冷媒が流れる上流側冷凍サクションパイプ８２ａと内箱６との間隔を確保しやすくなり、内箱６への結露の発生を抑えることができる。 Furthermore, in the present embodiment, since the upstream freezing suction pipe 82a is arranged outside the width direction of the refrigerator from the downstream freezing suction pipe 82b, the back plate 6e of the inner box 6 and other plates connected to the back plate 6e are connected to each other. By providing a chamfering portion 6be protruding inward of the inner box 6 at the corners formed, the upstream refrigerating suction pipe 82a and the inner box 6 through which a relatively low temperature refrigerant that has just flowed out of the refrigerating cooler 54 flows can be provided. It becomes easy to secure the interval, and the occurrence of dew condensation on the inner box 6 can be suppressed.

なお、上記した本実施形態では、冷凍サクションパイプ８２が、冷凍冷却器５４の天井壁を構成する断熱仕切壁２８からキャビネット２の断熱空間８に進入する場合について説明したが、当該貯蔵室の左右いずれかを区画する左側壁２ａ又は右側壁２ｂから断熱空間８に進入してもよく、その際、貯蔵室を区画する左側壁２ａ又は右側壁２ｂは、背壁２ｅに垂直な平面であっても、幅方向外方に行くほど前方に向かうような傾斜面であってもよい。このような場合であっても、冷凍冷却器５４が内箱６の背板６ｅに沿わせ設けられているため、キャビネット２の側壁２ａ，２ｂをほとんど通ることなく側壁２ａ、２ｂと背壁２ｅとで形成された断熱空間８の角部へ冷凍サクションパイプ８２を配管することができ、断熱空間８の広範囲に真空断熱材を設けて設置スペースに対する内容積の大容量化を図ることができる。 In the present embodiment described above, the case where the freezing suction pipe 82 enters the heat insulating space 8 of the cabinet 2 from the heat insulating partition wall 28 constituting the ceiling wall of the freezing cooler 54 has been described, but the left and right sides of the storage room are described. The heat insulating space 8 may be entered from the left side wall 2a or the right side wall 2b that divides either of them, and the left side wall 2a or the right side wall 2b that divides the storage chamber is a plane perpendicular to the back wall 2e. However, it may be an inclined surface that goes forward as it goes outward in the width direction. Even in such a case, since the refrigerating cooler 54 is provided along the back plate 6e of the inner box 6, the side walls 2a and 2b and the back wall 2e hardly pass through the side walls 2a and 2b of the cabinet 2. The refrigerating suction pipe 82 can be piped to the corner of the heat insulating space 8 formed by the above, and the vacuum heat insulating material can be provided in a wide range of the heat insulating space 8 to increase the internal volume of the installation space.

（第２実施形態）
次に、第２実施形態について、図１０及び図１１を参照して説明する。この第２実施形態は、１つの冷却器１５４によって、冷蔵温度帯の貯蔵室と冷凍温度帯の貯蔵室とを冷却する点で、冷蔵温度帯の貯蔵室と冷凍温度帯の貯蔵室とをそれぞれ別個の冷却器５２、５４で冷却する第１実施形態と異なる。 (Second Embodiment)
Next, the second embodiment will be described with reference to FIGS. 10 and 11. In the second embodiment, the storage chamber in the refrigerating temperature zone and the storage chamber in the refrigerating temperature zone are cooled by one cooler 154, respectively. It is different from the first embodiment in which cooling is performed by separate coolers 52 and 54.

本実施形態では、キャビネット２の内部が、上下に２段の断熱仕切壁２８ａ、２８ｂによって仕切られており、上段の断熱仕切壁２８ａの上方に冷蔵温度帯の貯蔵室、例えば、冷蔵室１０が形成され、上下２段の断熱仕切壁２８ａ、２８ｂの間に冷凍温度帯の貯蔵室、例えば、製氷室１４、小冷凍室、冷凍室１６が形成され、下段の断熱仕切壁２８ｂの下方に冷蔵温度帯の貯蔵室、例えば、野菜室１２が形成されている。上下２段の断熱仕切壁２８ａ、２８ｂの間に形成された冷凍温度帯の貯蔵室（製氷室１４、小冷凍室、冷凍室１６）の奥部には、冷却器室１２０及びダクト１２１が設けられている。この冷却器室１２０には、冷却器１５４及び送風ファン１５５が設けられており、送風ファン１５５が、冷却器１５４で冷却した冷却器室１２０内の空気をダクト１２１を介して冷凍温度帯の貯蔵室１４，１６に供給するとともに、冷蔵温度帯の貯蔵室１０、１２に供給することで、これらの貯蔵室を冷却する。 In the present embodiment, the inside of the cabinet 2 is partitioned by two upper and lower heat insulating partition walls 28a and 28b, and a storage chamber in the refrigerating temperature zone, for example, a refrigerating chamber 10 is located above the upper heat insulating partition wall 28a. A storage chamber in the freezing temperature zone, for example, an ice making chamber 14, a small freezing chamber, and a freezing chamber 16 is formed between the upper and lower two-stage heat insulating partition walls 28a and 28b, and refrigerated below the lower heat insulating partition wall 28b. A storage chamber in a temperature zone, for example, a vegetable compartment 12 is formed. A cooler chamber 120 and a duct 121 are provided in the inner part of the storage chamber (ice making chamber 14, small freezing chamber, freezing chamber 16) in the freezing temperature zone formed between the upper and lower two-stage heat insulating partition walls 28a and 28b. Has been done. The cooler chamber 120 is provided with a cooler 154 and a blower fan 155, and the blower fan 155 stores the air in the cooler chamber 120 cooled by the cooler 154 through a duct 121 in a refrigerating temperature zone. These storage chambers are cooled by supplying the chambers 14 and 16 and the storage chambers 10 and 12 in the refrigerating temperature zone.

このような構成の本実施形態の冷蔵庫１では、冷却器１５４の冷媒流れ方向の上流側に接続されたキャピラリチューブ１７８と、冷却器１５４と圧縮機５６の吸込側との間に設けられたサクションパイプ１８２とが、ロウ付けなどによって互いに熱交換可能に一体化されパイプ体１７９を構成する。 In the refrigerator 1 of the present embodiment having such a configuration, the capillary tube 178 connected to the upstream side in the refrigerant flow direction of the cooler 154 and the suction provided between the cooler 154 and the suction side of the compressor 56. The pipe 182 and the pipe 182 are integrated so as to be heat exchangeable with each other by brazing or the like to form a pipe body 179.

このパイプ体１７９は、冷却器室１２０において内箱６の背板６ｅに沿わせて設けられた冷却器１５４から冷却器室１２０の上方を区画する断熱仕切壁２８ａ又は冷却器室１２０の左右側方を区画する左右側壁２ａ、２ｂから断熱空間８へ進入する。断熱仕切壁２８ａ又は左右側壁２ａ，２ｂ内に進入したパイプ体１７９は、左右いずれか一方の面取り部６ａｅ、６ｂｅ、例えば、右側の面取り部６ｂｅの外側まで引き出される。面取り部６ｂｅの外側に引き出されたパイプ体１７９は、上方に向けて折り曲げられ面取り部６ｂｅの外側に沿って上昇し、当該面取り部６ｂｅの上端部において下方に折り曲げられ、その後、外箱４の底板４ｄの段差部４ｄ−１を貫通して機械室３４へ進入する。 The pipe body 179 is a heat insulating partition wall 28a for partitioning the upper part of the cooler chamber 120 from the cooler 154 provided along the back plate 6e of the inner box 6 in the cooler chamber 120, or the left and right sides of the cooler chamber 120. It enters the heat insulating space 8 from the left and right side walls 2a and 2b that partition the side. The pipe body 179 that has entered the heat insulating partition wall 28a or the left and right side walls 2a and 2b is pulled out to the outside of either the left or right chamfered portion 6ae or 6be, for example, the right chamfered portion 6be. The pipe body 179 pulled out to the outside of the chamfered portion 6be is bent upward, rises along the outside of the chamfered portion 6be, is bent downward at the upper end portion of the chamfered portion 6be, and then the outer box 4 It penetrates the stepped portion 4d-1 of the bottom plate 4d and enters the machine room 34.

また、冷蔵庫１では、冷却器１５４で発生した除霜水を受ける水受部１３５と、この水受部１３５で受けた除霜水をキャビネット２の外側に設けられた機械室３４へ排水する排水ホース１３７とが設けられている。この排水ホース１３７は、背板６ｅに設けられた導出孔６ｅ−２を通って断熱空間８内に進入し、パイプ体１７９が引き出された左側の面取り部６ｂｅと反対側の面取り部６ａｅの断熱空間８まで引き出され、当該面取り部６ａｅに沿って下降し、外箱４の底板４ｄの段差部４ｄ−１を貫通して機械室３４へ進入する。 Further, in the refrigerator 1, the water receiving portion 135 that receives the defrosted water generated by the cooler 154 and the drainage that drains the defrosted water received by the water receiving portion 135 to the machine room 34 provided on the outside of the cabinet 2. A hose 137 is provided. The drain hose 137 enters the heat insulating space 8 through the lead-out hole 6e-2 provided in the back plate 6e, and insulates the chamfered portion 6ae on the opposite side of the chamfered portion 6be on the left side from which the pipe body 179 is pulled out. It is pulled out to the space 8, descends along the chamfered portion 6ae, penetrates the stepped portion 4d-1 of the bottom plate 4d of the outer box 4, and enters the machine room 34.

このように１つの冷却器１５４によって冷蔵温度帯の貯蔵室１０，１２と冷凍温度帯の貯蔵室１４，１６とを冷却する本実施形態の冷蔵庫であっても、冷却器室１２０を上方又は側方を区画する断熱仕切壁２８ａ又は左右側壁２ａ，２ｂからサクションパイプ１８２を断熱空間８へ進入させ断熱空間８を通って機械室３４に設けられた圧縮機５６に接続することで、上記第１実施形態と同様の作用効果が奏される。 Even in the refrigerator of the present embodiment in which the storage chambers 10 and 12 in the refrigerating temperature zone and the storage chambers 14 and 16 in the refrigerating temperature zone are cooled by one cooler 154 in this way, the cooler chamber 120 is located above or on the side. By allowing the suction pipe 182 to enter the heat insulating space 8 from the heat insulating partition wall 28a or the left and right side walls 2a and 2b that partition the side and connecting to the compressor 56 provided in the machine room 34 through the heat insulating space 8, the first The same action and effect as those of the embodiment are achieved.

以上、本発明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を意図していない。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、発明の趣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。 Although the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof 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.

１…冷蔵庫、２…キャビネット、４…外箱、６…内箱、７ａ〜７ｅ…真空断熱材、８…断熱空間、９…断熱材、１０…冷蔵室、１２…野菜室、１４…製氷室、１５…開扉装置、１６…冷凍室、２８…断熱仕切壁、３４…機械室、３５…冷凍水受部、３６…冷蔵冷却器室、３７…冷凍排水ホース、４０…冷凍冷却器室、４６…制御基板、５０…冷凍サイクル、５２…冷蔵冷却器、５４…冷凍冷却器、５６…圧縮機、５８…凝縮器、７６…冷蔵サクションパイプ、７９…冷凍パイプ体、８２…冷凍サクションパイプ、８２ａ…上流側冷凍サクションパイプ、８２ｂ…下流側冷凍サクションパイプ、１００…保持具、１３０…断熱固定具、１４０…断熱固定具 1 ... Refrigerator, 2 ... Cabinet, 4 ... Outer box, 6 ... Inner box, 7a-7e ... Vacuum insulation, 8 ... Insulation space, 9 ... Insulation, 10 ... Refrigerator, 12 ... Vegetable room, 14 ... Ice making room , 15 ... Door opening device, 16 ... Freezer room, 28 ... Insulation partition wall, 34 ... Machine room, 35 ... Refrigerator water receiving part, 36 ... Refrigerator cooler room, 37 ... Refrigerator drain hose, 40 ... Refrigerator cooler room, 46 ... Control board, 50 ... Refrigerator cycle, 52 ... Refrigerator cooler, 54 ... Refrigerator cooler, 56 ... Compressor, 58 ... Condenser, 76 ... Refrigerator suction pipe, 79 ... Refrigerator pipe body, 82 ... Refrigerator suction pipe, 82a ... upstream refrigerated suction pipe, 82b ... downstream refrigerated suction pipe, 100 ... holder, 130 ... insulation fixture, 140 ... insulation fixture

Claims

It has an inner box, an outer box, and a heat insulating material provided in a heat insulating space formed between the inner box and the outer box, and a cooler chamber is formed inside the inner box to form the outer box. A cabinet with a machine room on the outside and
A refrigeration cycle having a cooler provided in the cooler chamber, a compressor provided in the machine room, and a suction pipe for returning the refrigerant flowing out of the cooler to the compressor, and incorporated in the cabinet. And with
The suction pipe is provided so as to be folded up and down at a corner of the heat insulating space formed by the side wall and the back wall of the cabinet so as to intersect with each other in a rear view, and from the upstream suction pipe and the upstream suction pipe. The downstream suction pipe located on the downstream side in the refrigerant flow direction runs in parallel at the corner.
The upstream side suction pipe is a refrigerator provided outside and in front of the downstream side suction pipe in the width direction of the cabinet.

The suction pipe is arranged at a corner of the heat insulating space formed by one of the left and right side walls and the back wall of the cabinet.
A drain hose for draining the defrosted water of the cooler of the refrigerating cycle to the outside of the outer box is arranged at a corner of the heat insulating space formed by the left and right side walls and the back wall of the cabinet. The refrigerator according to claim 1.

The refrigeration cycle comprises a capillary tube connected to the cooler.
The suction pipe enters the heat insulating space from the ceiling wall or side wall that partitions the cooler room, and is connected to the compressor through the heat insulating space.
The capillary tube is inserted into a lead-out hole provided in the ceiling wall or side wall for partitioning the cooler chamber and through which the suction pipe is inserted, enters the heat insulating space from the ceiling wall or the side wall, and passes through the heat insulating space. The refrigerator according to claim 1 or 2, which is pulled out to the outside of the outer box.