JP5932732B2 - refrigerator - Google Patents

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JP5932732B2
JP5932732B2 JP2013164400A JP2013164400A JP5932732B2 JP 5932732 B2 JP5932732 B2 JP 5932732B2 JP 2013164400 A JP2013164400 A JP 2013164400A JP 2013164400 A JP2013164400 A JP 2013164400A JP 5932732 B2 JP5932732 B2 JP 5932732B2
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heat insulating
insulating material
inner box
refrigerator
duct
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JP2015034646A (en
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弘洋 井ノ口
弘洋 井ノ口
中津　哲史
哲史 中津
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Priority to JP2013164400A priority Critical patent/JP5932732B2/en
Priority to CN201420425424.8U priority patent/CN204043281U/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/40—Refrigerating devices characterised by electrical wiring

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  • Refrigerator Housings (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Description

本発明は発泡断熱材中に電線を配した冷蔵庫に関するものである。   The present invention relates to a refrigerator in which electric wires are arranged in a foam heat insulating material.

一般的に、冷蔵庫は冷凍サイクル回路を備え、冷凍サイクル回路の冷却器で冷却された空気を貯蔵室に供給する構成となっている。また、貯蔵室には該貯蔵室内の温度を検出する庫内温度センサーが設けられている。そして、冷蔵庫の制御装置は、庫内温度センサーの検出値（換言すると貯蔵室内の冷却負荷）に応じて、冷凍サイクル回路の圧縮機及び送風ファンの運転周波数（ＯＮ・ＯＦＦを含む）、並びに、冷却器で冷却された空気の貯蔵室への供給量を制御するダンパーの開度等を制御する。このため、冷蔵庫の電気品（庫内温度センサー、圧縮機、送風ファン及びダンパー等）と制御装置とは、電線（電源供給線及び／又は通信線）で接続されている。   In general, a refrigerator includes a refrigeration cycle circuit and supplies air cooled by a cooler of the refrigeration cycle circuit to a storage room. The storage room is provided with an internal temperature sensor for detecting the temperature in the storage room. And the control apparatus of a refrigerator respond | corresponds to the detection value (in other words, cooling load in a storage chamber) of the internal temperature sensor, the operation frequency (including ON / OFF) of the compressor and the blower fan of the refrigeration cycle circuit, and The opening degree of the damper which controls the supply amount to the storage chamber of the air cooled with the cooler is controlled. For this reason, the electrical components (internal temperature sensor, compressor, blower fan, damper, etc.) of the refrigerator and the control device are connected by electric wires (power supply lines and / or communication lines).

ここで、庫内温度センサーは貯蔵室に設けられ、圧縮機は例えば筐体の下部に形成された機械室に設けられ、送風ファン及びダンパーは、筐体の内方（筐体の内箱と貯蔵室との間）に形成されたダクト内に設けられ、制御装置は例えば筐体の上部に設けられる等、電気品と制御装置とは異なる位置に設けられることとなる。このため、電気品と制御装置とを接続する電線の少なくとも一部は、筐体内（つまり、筐体を構成する内箱と外箱との間）に配置されることとなる。   Here, the internal temperature sensor is provided in the storage room, the compressor is provided in the machine room formed in the lower part of the housing, for example, and the blower fan and the damper are located inside the housing (with the inner box of the housing). The electrical device and the control device are provided at different positions, for example, provided in a duct formed between the storage chamber and the control device. For this reason, at least a part of the electric wires connecting the electrical product and the control device is disposed in the casing (that is, between the inner box and the outer box constituting the casing).

このため、例えば従来の冷蔵庫には、筐体内への電線の配置構成に関する技術として、筐体の内箱を貯蔵室側から見て外箱側に凹んだ凹部を形成し、該凹部に電線を収納するものが提案されている（例えば、特許文献１参照）。   For this reason, for example, in a conventional refrigerator, as a technique related to the arrangement configuration of the electric wires in the housing, a concave portion formed on the outer box side when the inner box of the housing is viewed from the storage chamber side is formed, and the electric wire is connected to the concave portion The thing to store is proposed (for example, refer patent document 1).

特開平０８−２９６９５３号公報（要約、図１）Japanese Patent Application Laid-Open No. 08-296953 (Summary, FIG. 1)

近年、冷蔵庫には、消費電力量の改善が要求されている。このため、消費電力量の改善を目的として、内箱と外箱との間に、ウレタン断熱材（発泡断熱材）に加えて該ウレタン断熱材よりも断熱性能の高い真空断熱材も配設する技術が提案されている。真空断熱材はウレタン断熱材に対して例えば約１０倍の断熱性能を有しているため、真空断熱材を厚くするほど、冷蔵庫の消費電力量を改善することができる。また、近年、冷蔵庫には、省スペース化、換言すると、筐体（つまり外箱）の外形サイズは拡大しないまま、筐体の内容積（内箱の内方となる空間であり、貯蔵室が形成される空間の容積）を増大することも要求されている。この要求に応えるためには、真空断熱材の厚さを厚くし、内箱と外箱との間の発泡断熱材の厚みを極力薄くすることが好ましい。   In recent years, refrigerators are required to improve power consumption. For this reason, in order to improve the power consumption, a vacuum heat insulating material having a higher heat insulating performance than the urethane heat insulating material is disposed between the inner box and the outer box in addition to the urethane heat insulating material (foam heat insulating material). Technology has been proposed. Since the vacuum heat insulating material has a heat insulating performance of about 10 times that of the urethane heat insulating material, for example, the thicker the vacuum heat insulating material, the more the power consumption of the refrigerator can be improved. In recent years, refrigerators have been made space-saving, in other words, without increasing the outer size of the casing (that is, the outer box), the inner volume of the casing (the space that is the inner side of the inner box, It is also required to increase the volume of the space formed. In order to meet this requirement, it is preferable to increase the thickness of the vacuum heat insulating material and to reduce the thickness of the foam heat insulating material between the inner box and the outer box as much as possible.

しかしながら、特許文献１に記載の冷蔵庫は、筐体の内箱を貯蔵室側から見て外箱側に凹んだ凹部を形成し、該凹部に電線を収納している。つまり、特許文献１に記載の冷蔵庫は、筐体の内箱と真空断熱材との間に、凹部の底部が突出して凸部が形成されることとなる。このため、当該凹部が筐体の内箱と真空断熱材との間に発泡断熱材が流れ込むことを阻害してしまう。したがって、特許文献１に記載の冷蔵庫は、筐体の内箱と真空断熱材との間に発泡断熱材を隙間無く充填させるためには、筐体の壁厚（内箱と外箱との間の空間）を断熱性能として必要な壁厚よりも厚くする必要があり、筐体の内容積を増大させるという要求に応えることができないという課題があった。   However, the refrigerator described in Patent Document 1 forms a recess that is recessed toward the outer box when the inner box of the housing is viewed from the storage chamber side, and the electric wire is accommodated in the recess. In other words, in the refrigerator described in Patent Document 1, the bottom of the recess protrudes between the inner box of the housing and the vacuum heat insulating material to form a protrusion. For this reason, the said recessed part will inhibit that a foaming heat insulating material flows between the inner box of a housing | casing, and a vacuum heat insulating material. Therefore, in the refrigerator described in Patent Document 1, the wall thickness of the casing (between the inner box and the outer box) can be filled between the inner box of the casing and the vacuum heat insulating material without gaps. It is necessary to make the space) thicker than the wall thickness necessary for heat insulation performance, and there is a problem that it is impossible to meet the demand for increasing the internal volume of the housing.

本発明は、上述のような課題を解決するためになされたものであり、筐体の壁厚（内箱と外箱との間の空間）を必要以上に厚くする必要がなく、筐体の内容積を増大させるという要求に応えることができる冷蔵庫を提供することを目的とする。   The present invention has been made to solve the above-described problems, and it is not necessary to increase the wall thickness (the space between the inner box and the outer box) of the casing more than necessary. It aims at providing the refrigerator which can respond to the request | requirement of increasing an internal volume.

本発明に係る冷蔵庫は、内箱と外箱との間に真空断熱材及び発泡断熱材が設けられ、少なくとも内箱と真空断熱材との間に発泡断熱材が充填された筐体と、該筐体に設けられ、冷蔵庫の電気品と電線で接続された制御基板と、を備え、電線の一部が、内箱と真空断熱材との間の発泡断熱材内に配置された冷蔵庫において、内箱には、外箱側から見て筐体の庫内側に凹んだ凹溝が形成され、該凹溝に電線を収納したものであり、筐体の庫内に形成された貯蔵室に供給される空気が通るダクトが内部に形成され、内箱の内側に設けられダクトを覆うダクト部品を備え、凹溝は、内箱においてダクト部品の内部に設けられているものである。 The refrigerator according to the present invention is provided with a vacuum heat insulating material and a foam heat insulating material between the inner box and the outer box, and at least a casing filled with the foam heat insulating material between the inner box and the vacuum heat insulating material, In a refrigerator provided in a housing, provided with a control board connected with electrical components of the refrigerator and electric wires, and a part of the electric wires are disposed in a foam heat insulating material between the inner box and the vacuum heat insulating material, The inner box is formed with a recessed groove recessed inside the housing as viewed from the outer box side, and an electric wire is stored in the recessed groove , and is supplied to a storage chamber formed in the housing of the housing. A duct through which the air passes is formed inside and includes a duct part that is provided inside the inner box and covers the duct, and the concave groove is provided inside the duct part in the inner box .

本発明は、内箱に外箱側から見て筐体の庫内側に凹んだ凹溝を形成し、該凹溝に電線を収納している。このため、本発明は、電線を収納する凹溝を内箱に形成しても、内箱と真空断熱材との間に発泡断熱材が流れ込むことを阻害するものが突出しない。したがって、本発明は、筐体の壁厚（内箱と外箱との間の空間）を必要以上に厚くする必要がないので、筐体の内容積を増大させるという要求に応えることができる。   In the present invention, a concave groove is formed in the inner box as viewed from the outer box side and is recessed in the interior of the housing, and an electric wire is accommodated in the concave groove. For this reason, even if the present invention forms the ditch | groove which accommodates an electric wire in an inner box, what inhibits a foaming heat insulating material flowing in between an inner box and a vacuum heat insulating material does not protrude. Therefore, the present invention does not need to increase the wall thickness of the housing (the space between the inner box and the outer box) more than necessary, and can meet the demand for increasing the inner volume of the housing.

本発明の実施の形態に係る冷蔵庫の正面図である。It is a front view of the refrigerator which concerns on embodiment of this invention. 本発明の実施の形態に係る冷蔵庫の側面断面図である。It is side surface sectional drawing of the refrigerator which concerns on embodiment of this invention. 本発明の実施の形態に係る冷蔵庫の冷凍サイクル回路を示す冷媒回路図である。It is a refrigerant circuit figure which shows the refrigerating cycle circuit of the refrigerator which concerns on embodiment of this invention. 本発明の実施の形態に係る冷蔵庫のブロック図である。It is a block diagram of the refrigerator which concerns on embodiment of this invention. 図１のＸ−Ｘ断面図である。It is XX sectional drawing of FIG. 図５のＡ部詳細図である。FIG. 6 is a detailed view of part A in FIG. 5. 本発明の実施の形態に係る冷蔵庫の内箱を外箱側から見た斜視図である。It is the perspective view which looked at the inner case of the refrigerator which concerns on embodiment of this invention from the outer case side.

実施の形態．
図１は、本発明の実施の形態に係る冷蔵庫の正面図である。図２は、この冷蔵庫の側面断面図である。図３は、冷蔵庫の冷凍サイクル回路を示す冷媒回路図である。図４は、この冷蔵庫のブロック図である。図５は、図１のＸ−Ｘ断面図である。図６は、図５のＡ部詳細図である。また、図７は、この冷蔵庫の内箱を外箱側から見た斜視図である。
以下、これら図１〜図７を用いて、本実施の形態に係る冷蔵庫１００について説明する。 Embodiment.
FIG. 1 is a front view of a refrigerator according to an embodiment of the present invention. FIG. 2 is a side sectional view of the refrigerator. FIG. 3 is a refrigerant circuit diagram showing a refrigeration cycle circuit of the refrigerator. FIG. 4 is a block diagram of the refrigerator. FIG. 5 is a sectional view taken along line XX in FIG. FIG. 6 is a detailed view of part A of FIG. FIG. 7 is a perspective view of the inner box of the refrigerator as viewed from the outer box side.
Hereinafter, the refrigerator 100 according to the present embodiment will be described with reference to FIGS.

本実施の形態の冷蔵庫１００は、図２に示すように、内箱１１と外箱１２との間に真空断熱材１６及びウレタン等の発泡断熱材１７が充填された筐体１０を備えている。なお、本実施の形態に係る筐体１０は、外箱１２に真空断熱材１６を取り付けて内箱１１と外箱１２とを組み立てた後、内箱１１と外箱１２との間に発泡断熱材１７を発泡充填する構成としている。このため、本実施の形態に係る筐体１０は、内箱１１と真空断熱材１６との間に発泡断熱材１７が設けられる構成となっている。   As shown in FIG. 2, the refrigerator 100 according to the present embodiment includes a casing 10 filled with a vacuum heat insulating material 16 and a foam heat insulating material 17 such as urethane between an inner box 11 and an outer box 12. . Note that the casing 10 according to the present embodiment has a foam insulation between the inner box 11 and the outer box 12 after the vacuum insulating material 16 is attached to the outer box 12 and the inner box 11 and the outer box 12 are assembled. The material 17 is configured to be foam-filled. For this reason, the housing 10 according to the present embodiment is configured such that the foam heat insulating material 17 is provided between the inner box 11 and the vacuum heat insulating material 16.

この筐体１０は、冷蔵庫１００の外郭を構成するものであり、内箱１１の内方が仕切板１３で区画されて複数の貯蔵室が形成されている。詳しくは、図１，２に示すように、本実施の形態に係る冷蔵庫１００は、貯蔵室として、冷蔵室１、製氷室２、切替室３、冷凍室４及び野菜室５を備えている。   The casing 10 constitutes the outer shell of the refrigerator 100, and the inner side of the inner box 11 is partitioned by a partition plate 13 to form a plurality of storage rooms. Specifically, as shown in FIGS. 1 and 2, the refrigerator 100 according to the present embodiment includes a refrigerator room 1, an ice making room 2, a switching room 3, a freezer room 4, and a vegetable room 5 as storage rooms.

冷蔵室１は、０℃〜５℃の冷蔵温度帯に冷却される貯蔵室であり、筐体１０の最上部に配置されている。製氷室２は、自動あるいは手動にて離氷動作を行い貯氷する貯蔵室であり、冷蔵室１の下方に配置されている。切替室３は、使用者の好みによって、例えば冷蔵温度帯（０℃〜５℃）からチルド温度帯（−２℃〜２℃）までの温度帯を段階的に設定できる貯蔵室である。この切替室３は、製氷室２と並んで冷蔵室１の下方に配置されている。冷凍室４は、貯蔵物を冷凍する冷凍温度帯（−１５℃〜−２０℃）に設定される貯蔵室であり、製氷室２及び切替室３の下方に配置されている。野菜室５は、野菜の貯蔵に好適な温度帯（０℃〜５℃）に設定される貯蔵室であり、冷凍室４の下方に配置されている。   The refrigerator compartment 1 is a storage compartment that is cooled to a refrigerator temperature zone of 0 ° C. to 5 ° C., and is arranged at the uppermost part of the housing 10. The ice making chamber 2 is a storage chamber for storing ice by performing ice removing operation automatically or manually, and is disposed below the refrigerator compartment 1. The switching chamber 3 is a storage chamber in which, for example, a temperature range from a refrigeration temperature range (0 ° C. to 5 ° C.) to a chilled temperature range (−2 ° C. to 2 ° C.) can be set step by step according to user preference. The switching chamber 3 is arranged below the refrigerator compartment 1 along with the ice making chamber 2. The freezer compartment 4 is a storage compartment set in a freezing temperature zone (−15 ° C. to −20 ° C.) for freezing stored items, and is disposed below the ice making chamber 2 and the switching chamber 3. The vegetable room 5 is a storage room set in a temperature range (0 ° C. to 5 ° C.) suitable for storing vegetables, and is disposed below the freezer room 4.

また、冷蔵庫１００は、図３に示すように、圧縮機２１、凝縮器２２、減圧手段２３及び冷却器２４が配管接続されて構成され、上記の各貯蔵室に供給する空気を冷却器２４で冷却する冷凍サイクル回路を備えている。   In addition, as shown in FIG. 3, the refrigerator 100 is configured by connecting a compressor 21, a condenser 22, a decompression unit 23, and a cooler 24, and air supplied to each of the storage chambers is supplied by the cooler 24. A refrigeration cycle circuit for cooling is provided.

圧縮機２１は、冷却器２４から流出した低温低圧の冷媒を吸入し、高温高圧のガス冷媒に圧縮するものである。この圧縮機２１は、図２に示すように、筐体１０の後部下側に形成された機械室１４に設けられている。凝縮器２２は、圧縮機２１で圧縮された高温高圧のガス冷媒を高圧の液冷媒に凝縮するものである。この凝縮器２２は、例えばフィンチューブ型の熱交換器等を用いてもよいし、筐体１０の側面部（詳しくは、内箱１１と外箱１２との間に充填された発泡断熱材１７内）に配置された配管を凝縮器２２として用いてもよい。   The compressor 21 sucks the low-temperature and low-pressure refrigerant flowing out of the cooler 24 and compresses it into a high-temperature and high-pressure gas refrigerant. As shown in FIG. 2, the compressor 21 is provided in a machine chamber 14 formed on the lower rear side of the housing 10. The condenser 22 condenses the high-temperature and high-pressure gas refrigerant compressed by the compressor 21 into a high-pressure liquid refrigerant. The condenser 22 may be, for example, a fin tube type heat exchanger or the like, or a side surface portion of the housing 10 (specifically, the foam heat insulating material 17 filled between the inner box 11 and the outer box 12). A pipe arranged in the inside may be used as the condenser 22.

減圧手段２３は、毛細管又は電磁膨張弁等であり、凝縮器から流出した高圧の液冷媒を低温低圧の気液二相冷媒に膨張させるものである。本実施の形態では、減圧手段２３として毛細管を採用している。冷却器２４は、例えばフィンチューブ型の熱交換器であり、減圧手段２３から流出した低温低圧の気液二相冷媒と各貯蔵室から流出した空気とを熱交換させ、当該空気を冷却するものである。本実施の形態では、図２に示すように、冷凍室４の背面部と内箱１１との間に冷却器室１５が形成されている。冷却器２４は、この冷却器室１５内に配置され、各貯蔵室から流出してこの冷却器室１５内に流入してきた空気と冷媒とを熱交換させる。また、図２に示すように、冷蔵庫１００には、冷却器室１５と各貯蔵室とを連通するダクト３２が設けられている。また、ダクト３２の入口部（ダクト３２と冷却器室１５との接続部）には、冷却器２４で冷却された空気をダクト３２内に送る送風ファン２５が設けられている。また、ダクト３２と各貯蔵室との接続部には、ダンパー３５が設けられている（図４参照）。ダンパー３５を開閉することにより（換言すると、開度を調整することにより）、各貯蔵室への冷却空気の供給量を調整することができる。   The decompression means 23 is a capillary tube, an electromagnetic expansion valve, or the like, and expands the high-pressure liquid refrigerant flowing out of the condenser into a low-temperature and low-pressure gas-liquid two-phase refrigerant. In the present embodiment, a capillary tube is employed as the decompression means 23. The cooler 24 is, for example, a fin tube type heat exchanger, and exchanges heat between the low-temperature and low-pressure gas-liquid two-phase refrigerant that has flowed out from the decompression means 23 and the air that has flowed out from each storage chamber, and cools the air. It is. In the present embodiment, as shown in FIG. 2, a cooler chamber 15 is formed between the back surface of the freezer chamber 4 and the inner box 11. The cooler 24 is disposed in the cooler chamber 15 and exchanges heat between the air that flows out of each storage chamber and flows into the cooler chamber 15 and the refrigerant. In addition, as shown in FIG. 2, the refrigerator 100 is provided with a duct 32 that communicates the cooler chamber 15 with each storage chamber. In addition, a blower fan 25 that sends air cooled by the cooler 24 into the duct 32 is provided at the inlet of the duct 32 (the connection between the duct 32 and the cooler chamber 15). Further, a damper 35 is provided at a connection portion between the duct 32 and each storage chamber (see FIG. 4). By opening and closing the damper 35 (in other words, by adjusting the opening degree), the amount of cooling air supplied to each storage chamber can be adjusted.

なお、冷却器２４で熱交換して低圧となった冷媒は、再び圧縮機２１に吸入される。   Note that the refrigerant having a low pressure due to heat exchange in the cooler 24 is again sucked into the compressor 21.

図４に示すように、冷蔵庫１００は制御装置５０を備え、制御装置５０は、圧縮機２１、送風ファン２５及びダンパー３５と電線４１（電源供給線及び／又は通信線）で接続されている。この制御装置５０は、例えばマイコン等で構成されており、図２に示すように筐体１０の後部上側に設けられている。そして、各貯蔵室内の冷却負荷に応じて、圧縮機２１及び送風ファン２５の運転周波数（ＯＮ・ＯＦＦを含む）、並びに、ダンパー３５の開度等を制御する。   As shown in FIG. 4, the refrigerator 100 includes a control device 50, and the control device 50 is connected to the compressor 21, the blower fan 25, and the damper 35 with an electric wire 41 (power supply line and / or communication line). The control device 50 is constituted by a microcomputer or the like, for example, and is provided on the rear upper side of the housing 10 as shown in FIG. And according to the cooling load in each storage chamber, the operating frequency (including ON / OFF) of the compressor 21 and the blower fan 25, the opening degree of the damper 35, and the like are controlled.

本実施の形態においては、各貯蔵室に、それぞれ、当該貯蔵室の温度を検出するための庫内温度センサーが設けられている。詳しくは、冷蔵室１には庫内温度センサー１ａが設けられ、製氷室２には庫内温度センサー２ａが設けられ、切替室３には庫内温度センサー３ａが設けられ、冷凍室４には庫内温度センサー４ａが設けられ、野菜室５には庫内温度センサー５ａが設けられている（図４参照）。そして、これら庫内温度センサー１ａ，２ａ，３ａ，４ａ，５ａのそれぞれは、電線４１を介して制御装置５０と接続されている。そして、制御装置５０は、各庫内温度センサー１ａ，２ａ，３ａ，４ａ，５ａの検出温度が設定温度となるように、圧縮機２１及び送風ファン２５の運転周波数（ＯＮ・ＯＦＦを含む）、並びに、ダンパー３５の開度等を制御する。   In the present embodiment, each storage room is provided with an internal temperature sensor for detecting the temperature of the storage room. Specifically, the refrigerator compartment 1 is provided with an internal temperature sensor 1a, the ice making room 2 is provided with an internal temperature sensor 2a, the switching room 3 is provided with an internal temperature sensor 3a, and the freezer compartment 4 has The inside temperature sensor 4a is provided, and the vegetable room 5 is provided with the inside temperature sensor 5a (see FIG. 4). Each of these internal temperature sensors 1 a, 2 a, 3 a, 4 a, 5 a is connected to the control device 50 via an electric wire 41. And the control apparatus 50 is the operation frequency (including ON / OFF) of the compressor 21 and the ventilation fan 25 so that the detection temperature of each internal temperature sensor 1a, 2a, 3a, 4a, 5a becomes set temperature. In addition, the opening degree of the damper 35 and the like are controlled.

なお、本実施の形態では、制御装置５０と電線４１を介して接続されている構成要素を電気品と称する。本実施の形態では、電気品として圧縮機２１、送風ファン２５、ダンパー３５及び庫内温度センサー１ａ，２ａ，３ａ，４ａ，５ａを示しているが、電気品はこれらの構成要素に限定されるものではない。   In the present embodiment, a component connected to the control device 50 via the electric wire 41 is referred to as an electric product. In the present embodiment, the compressor 21, the blower fan 25, the damper 35, and the internal temperature sensors 1a, 2a, 3a, 4a, and 5a are shown as electrical products, but the electrical products are limited to these components. It is not a thing.

ここで、上述のように、電気品と制御装置５０とは異なる位置に設けられることとなる。このため、電気品と制御装置５０とを接続する電線４１の少なくとも一部は、筐体１０内、つまり、内箱１１と真空断熱材１６との間に配置されることとなる。したがって、内箱１１と真空断熱材１６との間に発泡断熱材１７が流れ込むことを電線４１が阻害しないように、電線４１を内箱１１と真空断熱材１６との間に配置する必要がある。電線４１の配置構成が発泡断熱材１７の流動を阻害してしまう場合、内箱１１と真空断熱材１６との間に発泡断熱材１７を隙間無く充填発泡するために、内箱１１と真空断熱材１６との間（つまり、発泡断熱材１７の流路）を大きくしなければならないからである。これでは、筐体１０の壁厚（内箱１１と外箱１２との間の空間）を断熱性能として必要な壁厚よりも厚くする必要があり、筐体１０の内容積を増大させるという要求に応えることができない。   Here, as described above, the electrical product and the control device 50 are provided at different positions. For this reason, at least a part of the electric wire 41 that connects the electrical product and the control device 50 is disposed in the housing 10, that is, between the inner box 11 and the vacuum heat insulating material 16. Therefore, it is necessary to arrange the electric wire 41 between the inner box 11 and the vacuum heat insulating material 16 so that the electric wire 41 does not block the foam heat insulating material 17 from flowing between the inner box 11 and the vacuum heat insulating material 16. . If the arrangement of the electric wires 41 obstructs the flow of the foam insulation 17, the foam insulation 17 is filled and foamed between the inner box 11 and the vacuum insulation 16 without any gap. This is because the space between the material 16 (that is, the flow path of the foam heat insulating material 17) must be increased. In this case, it is necessary to make the wall thickness of the housing 10 (the space between the inner box 11 and the outer box 12) thicker than the wall thickness necessary for the heat insulation performance, and the demand for increasing the inner volume of the housing 10 is required. Can not respond to.

特に、近年、冷蔵庫には、省スペース化、換言すると、筐体（つまり外箱）の外形サイズは拡大しないまま、筐体の内容積（内箱の内方となる空間であり、貯蔵室が形成される空間の容積）を増大することも要求されている。このため、本実施の形態に係る筐体１０は、筐体１０の外形サイズは拡大しないまま、筐体１０の内容積（内箱１１の内方となる空間であり、貯蔵室が形成される空間の容積）の増加を図っている。このため、本実施の形態に係る筐体１０は、従来にはない新たな技術思想に基づいて製作されている。詳しくは、従来の冷凍冷蔵庫の本体部は、発泡断熱材が主に断熱機能を担い、真空断熱材は発泡断熱材の断熱機能を補助するという技術思想によって製作されていた。一方、本実施の形態に係る筐体１０は、真空断熱材１６が主に断熱機能を担うという新たな技術思想に基づいて製作されている。このため、本実施の形態に係る筐体１０は、内箱１１と外箱１２との間の空間における真空断熱材１６の充填率を４０％〜８０％としており、さらに、外箱１２の表面積に対する真空断熱材１６の面積比率（外箱１２の表面を覆う真空断熱材１６の面積比率）を６０％以上としている。また、発泡断熱材１７は、真空断熱材１６の固定、及び、筐体１０の強度確保を主目的として、その曲げ弾性率を１５．０ＭＰａ以上としている。つまり、筐体１０の外形サイズは拡大しないまま、筐体１０の内容積の増加を図った本実施の形態に係る筐体１０は、発泡断熱材１７の厚さがさらに薄くなっている。このため、本実施の形態に係る冷蔵庫１００にとって、内箱１１と真空断熱材１６との間に発泡断熱材１７が流れ込むことを阻害しないように、電線４１を内箱１１と真空断熱材１６との間に配置することは、特に重要である。   In particular, in recent years, refrigerators have been saved in space, in other words, without increasing the outer size of the casing (that is, the outer box), while the inner volume of the casing (the space that is the inner side of the inner box, It is also required to increase the volume of the space formed. For this reason, the housing 10 according to the present embodiment is an internal volume of the housing 10 (a space that is the inner side of the inner box 11 without forming the outer size of the housing 10, and a storage chamber is formed. The volume of space) is increased. For this reason, the housing | casing 10 which concerns on this Embodiment is manufactured based on the new technical idea which is not in the past. Specifically, the main body of a conventional refrigerator-freezer is manufactured based on the technical idea that the foam heat insulating material mainly bears the heat insulating function, and the vacuum heat insulating material assists the heat insulating function of the foam heat insulating material. On the other hand, the casing 10 according to the present embodiment is manufactured based on a new technical idea that the vacuum heat insulating material 16 mainly has a heat insulating function. For this reason, the housing 10 according to the present embodiment has a filling rate of the vacuum heat insulating material 16 in the space between the inner box 11 and the outer box 12 of 40% to 80%. The area ratio of the vacuum heat insulating material 16 to the area (the area ratio of the vacuum heat insulating material 16 covering the surface of the outer box 12) is set to 60% or more. The foam heat insulating material 17 has a flexural modulus of 15.0 MPa or more mainly for fixing the vacuum heat insulating material 16 and ensuring the strength of the housing 10. That is, in the casing 10 according to the present embodiment in which the internal volume of the casing 10 is increased without increasing the outer size of the casing 10, the thickness of the foam heat insulating material 17 is further reduced. For this reason, for the refrigerator 100 according to the present embodiment, the electric wire 41 is connected to the inner box 11 and the vacuum heat insulating material 16 so as not to prevent the foam heat insulating material 17 from flowing between the inner box 11 and the vacuum heat insulating material 16. Is particularly important.

そこで、本実施の形態に係る冷蔵庫１００においては、内箱１１と真空断熱材１６との間に配置される電線４１を、図５，６に示すように配置している。つまり、本実施の形態に係る冷蔵庫１００においては、内箱１１に外箱１２側から見て筐体１０の庫内側に凹んだ凹溝１８を形成し、該凹溝１８に電線を収納している。このため、本実施の形態に係る冷蔵庫１００においては、電線４１を収納する凹溝１８を内箱に形成しても、内箱１１と真空断熱材１６との間に発泡断熱材１７が流れ込むことを阻害するものが突出しない。したがって、本実施の形態に係る冷蔵庫１００においては、筐体１０の壁厚を必要以上に厚くする必要がないので、筐体１０の外形サイズを変更せずに筐体１０の内容積を増大させるという要求に応えることができる。   Therefore, in the refrigerator 100 according to the present embodiment, the electric wire 41 arranged between the inner box 11 and the vacuum heat insulating material 16 is arranged as shown in FIGS. That is, in the refrigerator 100 according to the present embodiment, the inner box 11 is formed with a recessed groove 18 that is recessed on the inner side of the housing 10 when viewed from the outer box 12 side, and the electric wire is stored in the recessed groove 18. Yes. For this reason, in the refrigerator 100 according to the present embodiment, the foamed heat insulating material 17 flows between the inner box 11 and the vacuum heat insulating material 16 even if the concave groove 18 that houses the electric wire 41 is formed in the inner box. Things that interfere with it do not protrude. Therefore, in refrigerator 100 according to the present embodiment, since it is not necessary to increase the wall thickness of casing 10 more than necessary, the internal volume of casing 10 is increased without changing the outer size of casing 10. It can meet the demand.

また、凹溝１８は内箱１１の背面部以外の位置（例えば内箱１１の側面部等）に形成してもよいが、凹溝１８を内箱１１の背面部に形成する場合、図５，６のように配置することが好ましい。詳しくは、本実施の形態では、ダクト３２の少なくとも一部をダクト部品３０で形成している。このダクト部品３０は、ダクト形成部材３１及びダクトカバー３３を備えている。ダクト形成部材３１は、内部にダクト３２が形成されているものである。本実施の形態では、ダクト形成部材３１を、ダクト形成部材３１ａ，３１ｂに分割して構成している。このダクト形成部材３１は、庫内側（貯蔵室側）から内箱１１の背面部に対向して設けられている。ダクトカバー３３は、ダクト形成部材３１を庫内側（貯蔵室側）から覆うものである。そして、内箱１１の背面部に形成されている凹溝１８のうち、ダクト部品３０と同じ高さに配置されている凹溝１８は、ダクト部品３０と対向する位置、つまりダクト部品３０に覆われるように配置されている。このように凹溝１８を形成することにより、凹溝１８によって筐体１０の庫内側の内容積が減少することを抑制できる。   Moreover, although the ditch | groove 18 may be formed in positions other than the back part of the inner box 11 (for example, side part etc. of the inner box 11), when forming the ditch | groove 18 in the back part of the inner box 11, FIG. , 6 is preferable. Specifically, in the present embodiment, at least a part of the duct 32 is formed by the duct component 30. The duct component 30 includes a duct forming member 31 and a duct cover 33. The duct forming member 31 has a duct 32 formed therein. In the present embodiment, the duct forming member 31 is divided into duct forming members 31a and 31b. The duct forming member 31 is provided so as to face the back surface portion of the inner box 11 from the inner side (storage chamber side). The duct cover 33 covers the duct forming member 31 from the inner side (storage chamber side). Of the concave grooves 18 formed on the back surface of the inner box 11, the concave grooves 18 arranged at the same height as the duct parts 30 are covered with the positions facing the duct parts 30, that is, the duct parts 30. It is arranged to be. By forming the concave groove 18 in this way, it is possible to suppress a decrease in the internal volume inside the cabinet 10 due to the concave groove 18.

また、ダクト部品３０に覆われる位置に凹溝１８を形成する場合、凹溝１８をダクト３２から４０ｍｍ以上離れた位置に配置することが好ましい。ダクト３２内を流れる冷気によって凹溝１８内の電線４１が冷却されて、電線４１に結露が発生することを抑制できる。   Moreover, when forming the ditch | groove 18 in the position covered with the duct component 30, it is preferable to arrange | position the ditch | groove 18 in the position away from the duct 32 40 mm or more. It can suppress that the electric wire 41 in the ditch | groove 18 is cooled by the cool air which flows through the inside of the duct 32, and dew condensation occurs in the electric wire 41.

なお、本実施の形態では、ダクト形成部材３１とダクトカバー３３との間に凹溝１８を配置したが、凹溝１８の形成位置はこれに限定されるものではない。例えば、ダクト形成部材３１における内箱１１の背面部との対向位置に、凹溝１８の底部を収納するための凹溝を設け、ダクト形成部材３１と対向する位置、つまりダクト形成部材３１に覆われるように凹溝１８を配置してもよい。   In the present embodiment, the concave groove 18 is disposed between the duct forming member 31 and the duct cover 33, but the formation position of the concave groove 18 is not limited to this. For example, a concave groove for accommodating the bottom of the concave groove 18 is provided at a position facing the back surface of the inner box 11 in the duct forming member 31, and the position facing the duct forming member 31, that is, covering the duct forming member 31 is covered. The groove 18 may be arranged as shown.

また、本実施の形態では、図７に示すように、凹溝１８に収納した電線４１をテープ４２で固定している。このようにすることにより、内箱１１と外箱１２との間（より詳しくは内箱１１と真空断熱材１６との間）に発泡断熱材１７を発泡充填する際、発泡断熱材１７の発泡圧によって凹溝１８から電線４１が飛び出すことを防止できる。つまり、発泡断熱材１７の流路に発泡断熱材１７の流通を阻害するものが飛び出すことを防止できるので、内箱１１と真空断熱材１６との間に発泡断熱材１７をより確実に隙間無く充填発泡することができる。   Moreover, in this Embodiment, as shown in FIG. 7, the electric wire 41 accommodated in the ditch | groove 18 is being fixed with the tape 42. As shown in FIG. In this way, when the foam heat insulating material 17 is foam-filled between the inner box 11 and the outer box 12 (more specifically, between the inner box 11 and the vacuum heat insulating material 16), the foam heat insulating material 17 is foamed. The electric wire 41 can be prevented from jumping out of the groove 18 due to the pressure. That is, since it is possible to prevent the material that inhibits the flow of the foam heat insulating material 17 from popping out in the flow path of the foam heat insulating material 17, the foam heat insulating material 17 can be more securely disposed between the inner box 11 and the vacuum heat insulating material 16. Can be filled and foamed.

１ 冷蔵室、１ａ 庫内温度センサー、２ 製氷室、２ａ 庫内温度センサー、３ 切替室、３ａ 庫内温度センサー、４ 冷凍室、４ａ 庫内温度センサー、５ 野菜室、５ａ 庫内温度センサー、１０ 筐体、１１ 内箱、１２ 外箱、１３ 仕切板、１４ 機械室、１５ 冷却器室、１６ 真空断熱材、１７ 発泡断熱材、１８ 凹溝、２１ 圧縮機、２２ 凝縮器、２３ 減圧手段、２４ 冷却器、２５ 送風ファン、３０ ダクト部品、３１（３１ａ，３１ｂ） ダクト形成部材、３２ ダクト、３３ ダクトカバー、３５ ダンパー、４１ 電線、４２ テープ、５０ 制御装置、１００ 冷蔵庫。   1 refrigerator compartment, 1a chamber temperature sensor, 2 ice making chamber, 2a chamber temperature sensor, 3 switching chamber, 3a chamber temperature sensor, 4 freezer chamber, 4a chamber temperature sensor, 5 vegetable chamber, 5a chamber temperature sensor, DESCRIPTION OF SYMBOLS 10 Case, 11 Inner box, 12 Outer box, 13 Partition plate, 14 Machine room, 15 Cooler room, 16 Vacuum heat insulating material, 17 Foam heat insulating material, 18 Groove, 21 Compressor, 22 Condenser, 23 Pressure reducing means , 24 cooler, 25 blower fan, 30 duct parts, 31 (31a, 31b) duct forming member, 32 duct, 33 duct cover, 35 damper, 41 electric wire, 42 tape, 50 control device, 100 refrigerator.

Claims (4)

内箱と外箱との間に真空断熱材及び発泡断熱材が設けられ、少なくとも前記内箱と前記真空断熱材との間に前記発泡断熱材が充填された筐体と、
該筐体に設けられ、冷蔵庫の電気品と電線で接続された制御基板と、を備え、
前記電線の一部が、前記内箱と前記真空断熱材との間の前記発泡断熱材内に配置された冷蔵庫において、
前記内箱には、前記外箱側から見て前記筐体の庫内側に凹んだ凹溝が形成され、
該凹溝に前記電線を収納したものであり、
前記筐体の庫内に形成された貯蔵室に供給される空気が通るダクトが内部に形成され、前記内箱の内側に設けられ前記ダクトを覆うダクト部品を備え、
前記凹溝は、前記内箱において前記ダクト部品の内部に設けられている
ことを特徴とする冷蔵庫。 A housing that is provided with a vacuum heat insulating material and a foam heat insulating material between the inner box and the outer box, and at least filled with the foam heat insulating material between the inner box and the vacuum heat insulating material,
A control board provided in the housing and connected to the electrical components of the refrigerator by an electric wire;
In the refrigerator in which a part of the electric wire is disposed in the foam heat insulating material between the inner box and the vacuum heat insulating material,
The inner box is formed with a recessed groove that is recessed on the inner side of the housing as viewed from the outer box side,
The electric wire is housed in the concave groove ,
A duct through which air supplied to a storage chamber formed in the cabinet of the housing passes is formed inside, and includes a duct component provided inside the inner box and covering the duct,
The refrigerator , wherein the concave groove is provided in the duct part in the inner box . 前記内箱の背面部に形成された前記凹溝の少なくとも一部は、前記ダクト部品と対向する位置に配置されていることを特徴とする請求項１に記載の冷蔵庫。 At least a portion of the groove formed in the back portion of the front Symbol inner box, a refrigerator according to claim 1, characterized in that it is arranged at a position opposite to the duct part. 前記ダクト部品と対向する前記凹溝は、前記ダクトから４０ｍｍ以上離れて配置されていることを特徴とする請求項２に記載の冷蔵庫。   The refrigerator according to claim 2, wherein the concave groove facing the duct component is disposed at a distance of 40 mm or more from the duct. 前記凹溝に収納された前記電線は、テープで前記内箱に固定されていることを特徴とする請求項１〜請求項３のいずれか一項に記載の冷蔵庫。   The said electric wire accommodated in the said ditch | groove is being fixed to the said inner box with the tape, The refrigerator as described in any one of Claims 1-3 characterized by the above-mentioned.
JP2013164400A 2013-08-07 2013-08-07 refrigerator Expired - Fee Related JP5932732B2 (en)

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