JP2007057195A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To constitute an efficient and rational refrigerating cycle for enhancing storage performance by increasing the storage volume of the lowest storage chamber by placing a compressor in an upper part. <P>SOLUTION: This refrigerator is provided by arranging the compressor in the rear of a top surface of the storage chamber of the uppermost stage being an invalid space of not reaching even when straightening one's back, and forming the refrigerating cycle for efficiently and rationally radiating heat of a heat radiating pipe as a condenser for promoting heat radiation of the compressor positioned on the relatively easily openable top surface while enhancing the storage performance by increasing the storage volume of the storage chamber of the lowest stage. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、圧縮機を天面後方に載置した冷蔵庫に関するものである。   The present invention relates to a refrigerator in which a compressor is placed behind the top surface.

近年、冷蔵庫は地球環境保護の観点から更なる省エネルギー化が進むとともに、小さく置けて大きく使える、いわば省スペースで大容量、更にその使い勝手や収納性の向上が求められている。   In recent years, refrigerators have become more energy-saving from the viewpoint of protecting the global environment, and are required to be small and can be used in large quantities, so to speak, space-saving, large capacity, and improved usability and storage.

従来技術には、小さく置けて大きくつかえる冷蔵庫を実現するために、凝縮器としての配管を断熱箱体の内部に配置させることで、収納容積に影響を与えないスペースをうまく活用する形態がある（例えば、特許文献１参照）。   In the prior art, in order to realize a refrigerator that can be placed small and large, a pipe that serves as a condenser is arranged inside the heat insulation box, thereby effectively utilizing the space that does not affect the storage volume ( For example, see Patent Document 1).

図１１、図１２で示すように、冷蔵庫本体１は外箱２と、内箱３と、これら両者間に充填された発泡断熱材４等で構成され、同本体１の底部に機械室８を設け、同機械室８内に圧縮機９と、同圧縮機９から発生する熱を放熱する送風機１０を配設し、機械室８の後面をカバー１５により被っていた。   As shown in FIGS. 11 and 12, the refrigerator main body 1 is composed of an outer box 2, an inner box 3, a foam heat insulating material 4 filled between the two, and a machine room 8 is provided at the bottom of the main body 1. The compressor 9 and the blower 10 that dissipates heat generated from the compressor 9 are disposed in the machine room 8, and the rear surface of the machine room 8 is covered with the cover 15.

また、内箱３内背面に冷却器室５を設け、同冷却器室５内に冷気を生成する冷却器６と、生成した冷気を強制循環する送風機７を配設し、圧縮機９の吐出側と冷却器６の入口との間に凝縮器を兼ねた放熱パイプ１１、キャピラリチューブ１２を順次直列に接続して構成した高圧側配管を接続し、冷却器６の出口と圧縮機９の吸入側との間に、キャピラリチューブ１２を添設するサクションパイプ１３を直列に接続して構成した低圧側配管を接続している。なお、前記凝縮器を兼ねた放熱パイプ１１は、冷蔵庫本体１背面の発泡断熱材４の中に埋設されている。   In addition, a cooler chamber 5 is provided on the back of the inner box 3, a cooler 6 that generates cool air in the cooler chamber 5, and a blower 7 that forcibly circulates the generated cool air are disposed, and the discharge of the compressor 9 A high-pressure side pipe constructed by connecting serially a heat radiating pipe 11 that also serves as a condenser and a capillary tube 12 is connected between the side and the inlet of the cooler 6, and the outlet of the cooler 6 and the suction of the compressor 9 are connected. A low-pressure side pipe constituted by connecting a suction pipe 13 provided with a capillary tube 12 in series is connected to the side. The heat radiating pipe 11 also serving as the condenser is embedded in the foam heat insulating material 4 on the back of the refrigerator body 1.

図１３はその冷凍サイクルを図に表したものであり、圧縮機９、放熱パイプ１１、キャピラリチューブ１２、冷却器６がサクションパイプ１３によって順次連結され環状の閉回路を形成されている。   FIG. 13 illustrates the refrigeration cycle. The compressor 9, the heat radiating pipe 11, the capillary tube 12, and the cooler 6 are sequentially connected by the suction pipe 13 to form an annular closed circuit.

上記構成において、冷却器６を通過した冷媒が圧縮機９において圧縮され、高温、高圧のガス状冷媒となる。このガス状冷媒が放熱パイプ１１により放熱し、中温、高圧の液状冷媒となる。続いて、この液状冷媒はキャピラリチューブ１２により減圧された後、冷却器６を通過しながら蒸発し、低温、低圧の冷媒ガスとなり、各区画室における熱交換機能を成している。この後、冷媒はガス状態で再び圧縮機９に吸入されることにより冷凍サイクルを完了するよう構成されている。
特開２００２−３６４９７５号公報 In the above configuration, the refrigerant that has passed through the cooler 6 is compressed by the compressor 9 and becomes a high-temperature, high-pressure gaseous refrigerant. This gaseous refrigerant dissipates heat through the heat radiating pipe 11 and becomes a medium-temperature, high-pressure liquid refrigerant. Subsequently, the liquid refrigerant is depressurized by the capillary tube 12 and then evaporated while passing through the cooler 6 to become a low-temperature and low-pressure refrigerant gas, thereby forming a heat exchange function in each compartment. Thereafter, the refrigerant is sucked into the compressor 9 again in a gas state, thereby completing the refrigeration cycle.
JP 2002-364975 A

しかしながら、上記従来の構成では、圧縮機を収納する機械室が冷蔵庫本体の底面後方に位置するため、最下段の貯蔵室の収納容積が小さく、また最上段の貯蔵室に手の届かない収納空間ができてしまうので、必ずしも収納性が良いというものではなかった。   However, in the above conventional configuration, since the machine room for storing the compressor is located behind the bottom surface of the refrigerator main body, the storage volume of the lowermost storage room is small, and the storage space that cannot be reached by the uppermost storage room As a result, the storage was not necessarily good.

また、底面後方に設置する圧縮機は、通常設置される背壁との隙間がほとんどない状態になると、圧縮機の排熱がうまくできなくて、非常に熱がこもりやすいという課題を有していた。   In addition, the compressor installed behind the bottom face has a problem that when there is almost no gap with the back wall that is normally installed, the heat exhausted by the compressor cannot be performed well, and the heat is easily trapped. It was.

また、冷蔵庫本体の背面側に凝縮器としての放熱パイプを配置しているので、一般的に冷蔵庫を設置する際に背面側の壁には隙間なく設置されることが多いことから、放熱が阻害され、しいては庫内側へ熱が侵入してくるといった課題を有していた。   In addition, since a heat dissipating pipe as a condenser is arranged on the back side of the refrigerator main body, it is generally installed on the wall on the back side without any gap when installing a refrigerator, so heat dissipation is hindered. Then, there was a problem that heat entered the inside of the warehouse.

本発明は、上記従来の課題を解決するもので、背伸びしても届かない無効スペースである最上段の貯蔵室の天面後方に圧縮機と凝縮器を載置し、配管を、冷蔵庫本体を形成する外箱に当接するように配置するもので、最下段の貯蔵室の収納容積の増大、収納性を高め、比較的開放されやすい天面に位置する圧縮機の放熱を促進するとともに、凝縮器の放熱を効率良く行える冷凍サイクルを形成した冷蔵庫を提供することを目的とする。   The present invention solves the above-described conventional problems, and places a compressor and a condenser behind the top surface of the uppermost storage room, which is an invalid space that does not reach even when stretched back, and connects the piping to the refrigerator body. It is arranged so as to contact the outer box to be formed, increasing the storage capacity of the lowermost storage chamber, increasing the storage capacity, promoting heat dissipation of the compressor located on the top surface that is relatively easy to open, and condensing It aims at providing the refrigerator which formed the refrigerating cycle which can perform the heat dissipation of a container efficiently.

断熱箱体と、前記断熱箱体の天面後方に天面よりも一段低く構成された凹部と、前記断熱箱体に備えられた圧縮機と凝縮器と蒸発器と、そのそれぞれを繋ぐ配管とを順に備えて一連の冷媒流路を形成した冷凍サイクルを備えた冷蔵庫において、前記凹部に圧縮機と凝縮器を収納するとともに、前記配管は前記断熱箱体の外箱に当接するように配置されるものである。   A heat insulating box, a recessed portion formed one step lower than the top surface behind the top surface of the heat insulating box, a compressor, a condenser and an evaporator provided in the heat insulating box, and pipes connecting the respective In a refrigerator having a refrigeration cycle in which a series of refrigerant flow paths are formed in order, the compressor and the condenser are housed in the recess, and the piping is arranged to contact the outer box of the heat insulating box. Is.

本発明の冷蔵庫は、背伸びしても届かない無効スペースである最上段の貯蔵室の天面後方に圧縮機と凝縮器を載置し、配管を、冷蔵庫本体を形成する外箱に当接するように配置するもので、最下段の貯蔵室の収納容積の増大、収納性を高め、比較的開放されやすい天面に位置する圧縮機の放熱を促進するとともに、凝縮器としての冷媒配管の放熱を効率良く行える冷凍サイクルを形成することができる。   In the refrigerator of the present invention, a compressor and a condenser are placed behind the top surface of the uppermost storage chamber, which is an invalid space that does not reach even when stretched back, and the piping is brought into contact with an outer box that forms the refrigerator main body. It increases the storage capacity of the lowermost storage room, improves storage capacity, promotes heat dissipation of the compressor located on the top surface that is relatively easy to open, and dissipates heat from the refrigerant piping as a condenser. An efficient refrigeration cycle can be formed.

請求項１に記載の発明は、断熱箱体と、前記断熱箱体の天面後方に天面よりも一段低く構成された凹部と、前記断熱箱体に備えられた圧縮機と凝縮器と蒸発器と、そのそれぞれを繋ぐ配管とを順に備えて一連の冷媒流路を形成した冷凍サイクルを備えた冷蔵庫において、前記凹部に圧縮機を収納するとともに、前記配管を前記断熱箱体の外箱に当接するように配置することにより、背伸びしても届かない無効スペースである最上段の貯蔵室の天面後方に圧縮機と凝縮器を配置するもので、最下段の貯蔵室の収納容積の増大、収納性を高め、比較的開放されやすい天面に位置する圧縮機の放熱を促進することができる。また、配管を断熱箱体の外箱に当接するように配置することで、凝縮器としての冷媒配管の放熱を効率よく、且つ合理的に行える冷凍サイクルを形成することができる。   The invention according to claim 1 is a heat insulating box, a recessed portion formed one step lower than the top surface behind the top surface of the heat insulating box, a compressor, a condenser, and evaporation provided in the heat insulating box. And a refrigerator having a refrigeration cycle comprising a series of refrigerant flow paths by sequentially providing a vessel and a pipe connecting the respective vessels, and storing the compressor in the recess and connecting the pipe to the outer box of the heat insulation box By placing them in contact with each other, a compressor and a condenser are placed behind the top surface of the uppermost storage room, which is an invalid space that cannot be reached even if it is stretched back, increasing the storage capacity of the lowermost storage room Storability can be improved and heat dissipation of the compressor located on the top surface that is relatively easy to open can be promoted. Moreover, the refrigerating cycle which can perform the heat radiation of the refrigerant | coolant piping as a condenser efficiently and rationally can be formed by arrange | positioning piping so that it may contact | abut to the outer box of a heat insulation box.

請求項２に記載の発明は、請求項１に記載の発明において、前記外箱に当接する配管を前記断熱箱体の少なくとも側面及び前面に配置することにより、外箱へ熱伝導させて放熱を促進することができるとともに、配管を前面に配置することで、貯蔵室の冷気により冷却される前面開口部の結露を防止するための手段として利用できる。   According to a second aspect of the present invention, in the first aspect of the present invention, by disposing a pipe abutting on the outer box on at least the side surface and the front surface of the heat insulating box body, heat conduction is performed to the outer box to dissipate heat. While being able to promote, it can utilize as a means for preventing dew condensation of the front-surface opening part cooled by the cool air of a store room by arrange | positioning piping to the front surface.

請求項３に記載の発明は、請求項１に記載の発明において、前記外箱に当接する配管を前記断熱箱体の少なくとも背面及び前面に配置することにより、外箱へ熱伝導させて放熱を促進することができるとともに、配管を背面に配置することで、背面を構成する外箱の内側表面に予め配管を貼り付けておき、背面と配管を一体化しておくことができ、この場合前記凹部との緩衝もなく簡単にはめ込むことができるので、作業性を飛躍的に向上できる。また、配管を前面に配置することで、貯蔵室の冷気により冷却される前面開口部の結露を防止するための手段として利用できる。   According to a third aspect of the present invention, in the first aspect of the present invention, the pipe contacting the outer box is disposed on at least the back surface and the front surface of the heat insulating box body to conduct heat to the outer box for heat dissipation. It can be promoted, and by arranging the pipe on the back side, the pipe can be attached in advance to the inner surface of the outer box constituting the back side, and the back side and the pipe can be integrated, and in this case the concave portion Can be easily fitted without any buffering, and workability can be dramatically improved. Moreover, it can utilize as a means for preventing dew condensation of the front-surface opening part cooled by the cool air of a store room by arrange | positioning piping to the front.

請求項４に記載の発明は、請求項１から３のいずれか一項に記載の発明において、前記凝縮器は、前記圧縮機の吐出配管と配管で接続し、前記断熱箱体の外箱に当接するように配置される配管は、前記凝縮器と配管で接続することにより、前記圧縮機から吐出された高温の冷媒をすぐに前期凹部に配置された凝縮器へ吐出させることで冷媒の予冷を行うことができ、また、前記凝縮器により予冷された冷媒を前記断熱箱体の外箱に当接するように配置された配管へ吐出して、外箱へ熱伝導させることで更に放熱を促進することができ、放熱を効率よく、且つ合理的に行うことが可能となる。   The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the condenser is connected to a discharge pipe of the compressor through a pipe, and is connected to an outer box of the heat insulating box. The pipe arranged so as to abut is connected to the condenser by a pipe, so that the high-temperature refrigerant discharged from the compressor is immediately discharged to the condenser arranged in the previous recess, thereby precooling the refrigerant. In addition, the refrigerant precooled by the condenser is discharged to a pipe arranged so as to contact the outer box of the heat insulating box, and heat conduction is further promoted to the outer box to further promote heat dissipation. Therefore, it is possible to efficiently and rationally dissipate heat.

（実施の形態１）
図１は本発明の実施の形態１における冷蔵庫の正面図であり、図２は図１のＡ−Ａ線断面図であり、図３は同実施の形態における冷蔵庫の冷媒配管構成図であり、図４は同実施の形態における冷蔵庫の高圧配管の位置構成図であり、図５は同実施の形態における冷蔵庫の冷媒配管構成図であり、図６は同実施の形態における冷蔵庫の断熱箱体の凹部正面図であり、図７は同実施の形態における冷蔵庫の断熱箱体の凹部上面図であり、図８は同実施の形態における冷蔵庫の断熱箱体の背面構成図であり、図９は同実施の形態における冷蔵庫の断熱箱体の凹部構成図を示すものである。 (Embodiment 1)
1 is a front view of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 3 is a refrigerant piping configuration diagram of the refrigerator according to the same embodiment. 4 is a position configuration diagram of the high-pressure piping of the refrigerator in the embodiment, FIG. 5 is a configuration diagram of the refrigerant piping of the refrigerator in the embodiment, and FIG. 6 is an insulation box body of the refrigerator in the embodiment. FIG. 7 is a front view of the recessed portion of the heat insulating box body of the refrigerator in the same embodiment, FIG. 8 is a rear view of the heat insulating box body of the refrigerator in the same embodiment, and FIG. The recessed part block diagram of the heat insulation box of the refrigerator in embodiment is shown.

図１から図９において、冷蔵庫本体３０は複数の断熱区画に区分されている断熱箱体３１と各断熱区画に設けられた扉にて構成されている。断熱箱体３１はＡＢＳなどの樹脂体を真空成型した内箱３２とプリコート鋼板などの金属材料を用いた外箱３３とで構成された空間に発泡断熱材３４を注入してなる断熱壁を備えている。発泡断熱材３４はたとえば硬質ウレタンフォームやフェノールフォームやスチレンフォームなどが用いられる。発泡材としてはハイドロカーボン系のシクロペンタンを用いると、温暖化防止の観点でさらによい。   1 to 9, the refrigerator main body 30 includes a heat insulating box 31 divided into a plurality of heat insulating sections and a door provided in each heat insulating section. The heat insulating box 31 includes a heat insulating wall formed by injecting a foam heat insulating material 34 into a space formed by an inner box 32 formed by vacuum molding a resin body such as ABS and an outer box 33 using a metal material such as a pre-coated steel plate. ing. For example, rigid urethane foam, phenol foam, styrene foam, or the like is used as the foam heat insulating material 34. Use of hydrocarbon-based cyclopentane as the foaming material is better from the viewpoint of preventing global warming.

断熱箱体３１は、複数の貯蔵室を形成し、上から冷蔵室４０、製氷室４１、切替室４２、野菜室４３、冷凍室４４の構成となっていて、各貯蔵室を区画する複数の仕切壁４５を備え上から４５ａ、４５ｂ、４５ｃ、４５ｄである。例えば、仕切壁４５ｄは断熱された壁であり、野菜室４３と冷凍室４４を区画するものである。各断熱区画の前面開口は各仕切壁と断熱箱体３１の前面の縁部１０１により区画され、それぞれの前面開口には断熱扉が図示しないガスケットを介して設けられる。上から冷蔵室扉４０ａ、製氷室扉４１ａ、切替室扉４２ａ、野菜室扉４３ａ、冷凍室扉４４ａである。   The heat insulation box 31 forms a plurality of storage chambers, and has a structure of a refrigeration chamber 40, an ice making chamber 41, a switching chamber 42, a vegetable chamber 43, and a freezing chamber 44 from above, and a plurality of compartments dividing each storage chamber. A partition wall 45 is provided, and 45a, 45b, 45c, and 45d are provided from the top. For example, the partition wall 45 d is a thermally insulated wall and partitions the vegetable compartment 43 and the freezing compartment 44. A front opening of each heat insulating section is partitioned by each partition wall and a front edge portion 101 of the heat insulating box 31, and a heat insulating door is provided in each front opening via a gasket (not shown). From the top, the refrigerator door 40a, the ice making door 41a, the switching chamber door 42a, the vegetable compartment door 43a, and the freezer compartment door 44a.

次に、断熱箱体３１の各貯蔵室について説明する。   Next, each storage chamber of the heat insulation box 31 will be described.

冷蔵室４０は冷蔵保存のために凍らない温度を下限に通常１〜５℃で設定されている。貯蔵室内は上方を圧縮機５２を収納するための凹部５０が突出して形成され、食品などを整理して収納するための複数の棚７０を設け、冷蔵室扉４０ａの内側にはペットボトルなどの飲料を収納できる複数のポケット７１を設けている。最下段には肉魚などの保鮮性向上のための貯蔵ケース７２を設け比較的低めの温度、たとえば−３〜１℃で設定されている。   The refrigerator compartment 40 is normally set at 1 to 5 ° C. with the temperature not frozen for refrigerated storage as the lower limit. A concave portion 50 for storing the compressor 52 projects upward from the storage chamber, and a plurality of shelves 70 for organizing and storing food and the like are provided. Inside the refrigerator compartment door 40a, a plastic bottle or the like is provided. A plurality of pockets 71 for storing beverages are provided. A storage case 72 for improving the freshness of meat fish or the like is provided at the lowest level, and is set at a relatively low temperature, for example, -3 to 1 ° C.

製氷室４１は、氷を生成して貯留するために通常−２２〜−１８℃で設定される。庫内は氷を生成するための製氷皿を備えた製氷機構７３を設けていて、出来た氷を貯留する貯氷容器７４を収容し、レール（図示せず）などで手前に引き出せるよう構成されている。   The ice making chamber 41 is normally set at −22 to −18 ° C. in order to generate and store ice. The inside of the refrigerator is provided with an ice making mechanism 73 having an ice making tray for generating ice, and is configured to accommodate an ice storage container 74 for storing the produced ice and to be pulled out by a rail (not shown) or the like. Yes.

切替室４２は、例えば約３℃に設定された冷蔵室、約１℃に設定されたチルド室、約−１℃から約−３℃に設定されたパーシャル室、約−７℃に設定されたソフト冷凍室、約−１８℃に設定された冷凍室として切り替えて利用される。   The switching chamber 42 is set to, for example, a refrigerated chamber set at about 3 ° C, a chilled chamber set at about 1 ° C, a partial chamber set at about -1 ° C to about -3 ° C, and about -7 ° C. It is used by switching as a soft freezer, a freezer set at about -18 ° C.

野菜室４３は、冷蔵室４０と同等もしくは若干高い温度設定の２℃〜７℃とすることが一般的で、低温にすれほど葉野菜の鮮度を長期間維持することが可能である。庫内は野菜などの食品を整理して収納できる野菜室容器７５を収容し、レール（図示せず）などで手前に引き出せるよう構成されている。   The vegetable room 43 is generally set to 2 ° C. to 7 ° C., which is the same as or slightly higher than the temperature of the refrigerated room 40, and the freshness of the leafy vegetables can be maintained for a long time as the temperature is lowered. The inside of the cabinet is configured to accommodate a vegetable compartment container 75 that can organize and store food such as vegetables, and can be pulled out to the front with a rail (not shown).

冷凍室４４は、冷凍保存のために通常−２２〜−１８℃で設定されているが、冷凍保存状態の向上のために、たとえば−３０や−２５℃の低温で設定されることもある。庫内は食品を整理して収納できる冷凍室容器７６を収容し、レール（図示せず）などで手前に引き出せるよう構成されている。   The freezer compartment 44 is normally set at −22 to −18 ° C. for frozen storage, but may be set at a low temperature of −30 or −25 ° C., for example, to improve the frozen storage state. The inside of the cabinet accommodates a freezer compartment 76 that can organize and store foods, and is configured to be pulled out by a rail (not shown) or the like.

野菜室４３と冷凍室４４の背面に冷却室８０が設けられ、冷却室８０は断熱性を有する仕切壁４５ｅで野菜室４３及び冷凍室４４を仕切っている。また、野菜室４３と冷凍室４４は断熱性を有する仕切壁４５ｄで仕切られている。   A cooling chamber 80 is provided on the back of the vegetable compartment 43 and the freezing compartment 44, and the cooling compartment 80 partitions the vegetable compartment 43 and the freezing compartment 44 by a partition wall 45e having heat insulation properties. The vegetable compartment 43 and the freezer compartment 44 are partitioned by a partition wall 45d having heat insulation properties.

冷却室８０には、庫内の空気を熱交換させて冷気に変換する蒸発器８３と、各貯蔵室に冷気を送るための冷却ファン８４をその上方に位置させている。   In the cooling chamber 80, an evaporator 83 for exchanging heat in the air to convert it into cold air, and a cooling fan 84 for sending the cold air to each storage chamber are located above.

このような冷蔵庫には、図３のように冷凍サイクルが設けられ、圧縮機５２内に封入された冷媒が冷凍サイクルを循環するよう構成される。以下、その冷凍サイクルについて説明する。   Such a refrigerator is provided with a refrigeration cycle as shown in FIG. 3, and is configured such that the refrigerant sealed in the compressor 52 circulates in the refrigeration cycle. Hereinafter, the refrigeration cycle will be described.

冷凍サイクルは、その全てが密閉空間で構成され、封入された冷媒を圧縮し冷凍サイクルへ高温高圧の冷媒を送り出す圧縮機５２、冷媒を放熱し中温高圧に凝縮液化させる凝縮器９１、液化冷媒を減圧させる減圧装置１１０、冷媒を蒸発させて冷熱を発生させる蒸発器８３などから構成されて、それぞれが冷媒配管９４により接続されている。   The refrigeration cycle is entirely composed of a sealed space, a compressor 52 that compresses the enclosed refrigerant and sends high-temperature and high-pressure refrigerant to the refrigeration cycle, a condenser 91 that dissipates the refrigerant and condenses and liquefies it to medium temperature and high pressure, and a liquefied refrigerant. A decompression device 110 that decompresses, an evaporator 83 that evaporates the refrigerant to generate cold, and the like are connected to each other by a refrigerant pipe 94.

ここで圧縮機５２は、断熱箱体３１の天面部に背面側を一段低い段差状に窪ませた凹部５０に載置される。凹部５０は外箱３３によって形成された左右壁で囲われていて、断熱箱体３１の上方及び背方を開口するよう構成され、その開口はカバー９５で覆われている。また、凹部５０の空間内の空気を循環させるための放熱ファン９６を圧縮機５２と所定の間隔をとって、その側方へ横並びにして載置し、圧縮機５２に風を当てるような流れで循環し放熱を促進するよう配置されている。   Here, the compressor 52 is placed in a concave portion 50 in which the back side is recessed in a stepped shape that is one step lower on the top surface portion of the heat insulating box 31. The recess 50 is surrounded by left and right walls formed by the outer box 33, and is configured to open above and behind the heat insulating box 31, and the opening is covered with a cover 95. Further, a flow in which a heat dissipating fan 96 for circulating air in the space of the recess 50 is placed side by side with a predetermined distance from the compressor 52 and air is applied to the compressor 52. It is arranged so as to circulate and promote heat dissipation.

凝縮器９１は、凹部５０に圧縮機５２と横並びに配置構成されている。凹部５０に配置した凝縮器９１は配管で構成されており、放熱ファン９６により圧縮機５２と同様に放熱を促進されており、圧縮機５２よりも風上側に配置されている。また、外箱３３に当接するように配置されている配管９４も凝縮器として放熱を促進している。   The condenser 91 is arranged side by side with the compressor 52 in the recess 50. The condenser 91 disposed in the recess 50 is configured by piping, and heat radiation is promoted by the heat radiation fan 96 in the same manner as the compressor 52, and is disposed on the windward side of the compressor 52. In addition, the pipe 94 arranged so as to contact the outer box 33 also promotes heat dissipation as a condenser.

蒸発器８３は前述したように、最下段の冷凍室４４、その上方の野菜室４３の後方に跨るように配置されていて、代表的なものではフィン＆チューブ式があり、圧縮機５２よりも低い位置に配置されることになる。   As described above, the evaporator 83 is arranged so as to straddle the rear of the lowermost freezer compartment 44 and the vegetable compartment 43 above it, and a typical one is a fin and tube type, which is more than the compressor 52. It will be placed in a low position.

次に上述した圧縮機５２、凝縮器９１、蒸発器８３などを接続するための冷媒配管９４について説明する。   Next, the refrigerant pipe 94 for connecting the compressor 52, the condenser 91, the evaporator 83, and the like described above will be described.

冷媒配管９４は、代表的なものとして加工しやすくかつ安価な銅管を用いることが多く、その他の手段では鉄管やアルミ管などを用いる場合もある。   As the refrigerant pipe 94, a copper pipe that is easy to process and inexpensive is often used as a typical one, and an iron pipe, an aluminum pipe, or the like may be used as other means.

図４に示すように、冷媒配管９４は、断熱箱体３１の側面と前面に配置されており、第一冷媒配管９４ａ、第二冷媒配管９４ｂ、第三冷媒配管９４ｃで構成されている。まず、左側面に位置する第一冷媒配管９４ａは、凹部５０の凝縮器９１で放熱された冷媒を更に放熱させるための配管であり、断熱箱体３１の外箱３３と内箱３２の間に位置し、外箱３３に当接するように配置され、その一部はアルミテープなどの放熱促進部材１００のように熱伝導性の良い部材にて外箱３３に貼り付けるように固定されている。その後に発泡断熱材３４を充填し、外箱３３に更に密着当接されるよう構成している。   As shown in FIG. 4, the refrigerant pipe 94 is disposed on the side surface and the front surface of the heat insulating box 31, and includes a first refrigerant pipe 94 a, a second refrigerant pipe 94 b, and a third refrigerant pipe 94 c. First, the first refrigerant pipe 94 a located on the left side is a pipe for further radiating the refrigerant radiated by the condenser 91 of the recess 50, and is between the outer box 33 and the inner box 32 of the heat insulating box 31. It is located so that it may contact | abut to the outer case 33, and the one part is being fixed so that it may affix on the outer case 33 with a heat conductive good member like the heat dissipation promotion members 100, such as an aluminum tape. Thereafter, the foam heat insulating material 34 is filled, and the outer casing 33 is further in close contact with the outer case 33.

次に、前面に位置する第二冷媒配管９４ｂは、凝縮器９１と第一冷媒配管９４ａで放熱した冷媒を更に放熱させるための配管であり、断熱箱体３１の前面開口に側面の前端を折り曲げて成形し、側面と連通してなる縁部１０１に沿って、その縁部１０１のほぼ全周に渡って敷設され、縁部１０１の内箱３２側に位置し前面開口側と当接するよう配置される。より縁部１０１と密着させるために熱伝導性の良い樹脂などを直接注入して固定する方法もある。また、第二冷媒配管９４ｂは断熱箱体３１を温度帯の異なる複数の貯蔵室に区画する複数の仕切壁の前方面にも構成し、この場合は前述した縁部１０１の右側に配設される第二冷媒配管９４ｂを仕切壁の高さ位置で、仕切壁側に曲げ加工を設けて仕切壁の前方のほぼ全幅を通し、縁部１０１の左側の手前付近にＵ曲げ部を設けて仕切壁の前方で上下往復するように配設し縁部１０１の右側へ戻るよう配設する。このように、他の仕切壁も前述と同様に構成することで、縁部１０１と仕切壁を配設する第二冷媒配管９４ｂは断熱箱体３１の前面開口を一筆書きで配置構成されることになる。   Next, the second refrigerant pipe 94b located on the front surface is a pipe for further radiating the refrigerant radiated by the condenser 91 and the first refrigerant pipe 94a, and the front end of the side surface is bent at the front opening of the heat insulating box 31. Along the edge portion 101 formed in communication with the side surface, it is laid over substantially the entire circumference of the edge portion 101, and is disposed on the inner box 32 side of the edge portion 101 so as to contact the front opening side. Is done. There is also a method of directly injecting and fixing a resin having good thermal conductivity in order to make it closely contact with the edge portion 101. The second refrigerant pipe 94b is also configured on the front surface of a plurality of partition walls that divide the heat insulating box 31 into a plurality of storage chambers having different temperature zones, and in this case, is disposed on the right side of the edge portion 101 described above. The second refrigerant pipe 94b is bent at the height of the partition wall and is bent on the partition wall side so as to pass through almost the entire width in front of the partition wall. It arrange | positions so that it may reciprocate up and down in front of a wall, and it may arrange | position so that it may return to the right side of the edge part 101. FIG. As described above, the other partition walls are configured in the same manner as described above, so that the second refrigerant pipe 94b in which the edge portion 101 and the partition wall are disposed is configured so that the front opening of the heat insulating box 31 is arranged with a single stroke. become.

一方、右側面に位置する第三冷媒配管９４ｃは、凝縮器９１及び第一冷媒配管９４ａ及び第二冷媒配管９４ｂで凝縮液化した冷媒を断熱箱体３１の右側面から天面を通り、凹部５０の天面側に再び戻すためのものであり、前述した第一冷媒配管９４ａと同じように、アルミテープなどの放熱促進部材１００により外箱３３の内側表面に貼り付けるよう構成されている。ここで、第一冷媒配管９４ａと第三冷媒配管９４ｃとの貼り付け位置は、できる限り外箱３３の側面後方に貼り付けることが望ましい。なぜなら、通常断熱箱体３１の側面の断熱壁は治具などの抜き勾配が存在し、後方側の壁厚が厚くなるので貯蔵室内への熱侵入が少なくなるという利点を有するためである。   On the other hand, the third refrigerant pipe 94c located on the right side surface passes through the top surface from the right side surface of the heat insulating box 31 with the refrigerant condensed and liquefied in the condenser 91, the first refrigerant pipe 94a, and the second refrigerant pipe 94b, and the concave portion 50. In the same manner as the first refrigerant pipe 94a described above, it is configured to be attached to the inner surface of the outer box 33 by a heat radiation promoting member 100 such as an aluminum tape. Here, it is desirable to attach the first refrigerant pipe 94a and the third refrigerant pipe 94c to the rear side of the outer box 33 as much as possible. This is because the heat insulating wall on the side surface of the normal heat insulating box 31 has a draft angle such as a jig, and the wall thickness on the rear side is increased, so that heat penetration into the storage chamber is reduced.

前述したような冷媒配管９４は、図５に示すように、通常、外箱３３を形成するプリコート鋼板などの金属材を平板の状態で、側面に位置する第二冷媒配管９４ｂ、第四冷媒配管９４ｄを所定の位置に設置し、必要な箇所にアルミテープなどの放熱促進部材１００を貼り付けて固定しておき、その後、外箱３３を第二冷媒配管９４ｂと第四冷媒配管９４ｄとともに所定の折り曲げ線で折り曲げて、外箱３３の天面、側面を構成する方法をとる。なお、前面に位置する第三冷媒配管９４ｃも前述と同様にして折り曲げて構成する方法もある。   As shown in FIG. 5, the refrigerant pipe 94 as described above is usually a second refrigerant pipe 94 b and a fourth refrigerant pipe located on the side surface of a metal material such as a pre-coated steel plate forming the outer box 33 in a flat plate state. 94d is installed at a predetermined position, and a heat radiation promoting member 100 such as an aluminum tape is pasted and fixed at a necessary position. Thereafter, the outer box 33 is fixed together with the second refrigerant pipe 94b and the fourth refrigerant pipe 94d. A method is adopted in which the top and side surfaces of the outer box 33 are formed by folding along a folding line. In addition, there is also a method in which the third refrigerant pipe 94c located on the front surface is bent and configured in the same manner as described above.

減圧装置１１０は、放熱して凝縮液化された高圧の冷媒を、減圧して蒸発器８３へ送るためのものであり、断熱箱体３１の背面板３５と内箱３２の背面との間でどちらにも当接しないよう発泡断熱材３４に覆われるよう配置構成される。減圧装置１１０は、一般的に管径の小さいものを使用することが多く冷蔵庫では約０．５ｍｍ〜１ｍｍ（管内径）を使用することが多い。その他に冷媒の流量を自由に制御できる冷媒流量制御弁や、膨張弁を用いて減圧しても構わない。また、減圧装置１１０に至る前に、冷媒配管９４内のゴミや金属粉等を圧縮機５２へ戻さないための図示しないフィルターや、システム内の水分を吸着する図示しない吸着部材などを備えたドライヤ１１１を冷凍システム内に設け、凹部５０に収納され圧縮機５２の風上側である放熱ファン９６周辺に配置構成している。   The decompression device 110 is for depressurizing and sending the high-pressure refrigerant that has been condensed and liquefied by heat dissipation to the evaporator 83, and between the back plate 35 of the heat insulation box 31 and the back of the inner box 32. Also, it is arranged and configured so as to be covered with the foam heat insulating material 34 so as not to come into contact. The decompression device 110 generally uses a small tube diameter, and a refrigerator often uses about 0.5 mm to 1 mm (tube inner diameter). In addition, the pressure may be reduced using a refrigerant flow rate control valve or an expansion valve that can freely control the flow rate of the refrigerant. Further, before reaching the decompression device 110, a dryer provided with a filter (not shown) for preventing dust and metal powder in the refrigerant pipe 94 from returning to the compressor 52, a suction member (not shown) for adsorbing moisture in the system, and the like. 111 is provided in the refrigeration system and is arranged around the heat radiating fan 96 which is housed in the recess 50 and is on the windward side of the compressor 52.

吸入配管１１２は、蒸発器８３で気化した冷媒を圧縮機５２へと戻すためのものであり、断熱箱体３１の背面板３５と、内箱３２背面との間に配置され、背面板３５と内箱３２の背面とのどちらにも当接しないよう発泡断熱材３４に覆われるよう構成される。   The suction pipe 112 is for returning the refrigerant vaporized by the evaporator 83 to the compressor 52, and is arranged between the back plate 35 of the heat insulating box 31 and the back of the inner box 32, It is configured to be covered with the foam heat insulating material 34 so as not to contact either the back surface of the inner box 32.

以上のように構成された冷蔵庫について、以下その作用について説明する。   About the refrigerator comprised as mentioned above, the effect | action is demonstrated below.

まず、圧縮機５２と凝縮器９１を断熱箱体３１の天面後方の凹部５０に載置して、最下方の貯蔵室である冷凍室４４の後方領域には配置せず、冷却室８０を冷凍室４４とその上方の野菜室４３の背面に配置し、蒸発器８３と冷却ファン８４を概ね冷凍室４４と野菜室４３の高さ範囲内で設け、蒸発器８３を高さ方向に延長させ奥行き寸法を短縮することにより、冷却室８０の厚みを薄くして庫内容積として寄与しない無効スペースを減少し、野菜室４３、冷凍室４４の収納容積を増大し収納性を高めることができる。また断熱箱体３１の天面後方の凹部５０は使用者が手の届き難い、いわば無効スペースに近い空間であったため、その箇所に圧縮機５２を位置させることは極めて冷蔵庫本体３０の内容積をうまく活用できることになる。さらに野菜室４３、冷凍室４４を引出し式の貯蔵室としているので、野菜室容器７５、冷凍室容器７６の奥に収納された食品なども楽に出し入れできて使い勝手の向上も図れる。   First, the compressor 52 and the condenser 91 are placed in the concave portion 50 at the rear of the top surface of the heat insulating box 31 and are not arranged in the rear region of the freezing chamber 44 which is the lowermost storage chamber. Arranged on the back of the freezer compartment 44 and the vegetable compartment 43 thereabove, the evaporator 83 and the cooling fan 84 are provided approximately within the height range of the freezer compartment 44 and the vegetable compartment 43, and the evaporator 83 is extended in the height direction. By shortening the depth dimension, the thickness of the cooling chamber 80 can be reduced to reduce the ineffective space that does not contribute to the internal volume, and the storage capacity of the vegetable room 43 and the freezing room 44 can be increased to improve the storage performance. Moreover, since the recessed part 50 of the back | upper surface of the heat insulation box 31 was difficult for the user to reach, so to speak, it was a space close to an invalid space, so positioning the compressor 52 at that location would greatly increase the internal volume of the refrigerator body 30. It can be used well. Furthermore, since the vegetable compartment 43 and the freezing compartment 44 are drawer-type storage compartments, food stored in the back of the vegetable compartment container 75 and the freezing compartment container 76 can be easily put in and out, and the usability can be improved.

特に、近年、使用者の使用頻度や鮮度管理のしやすさ、人間工学的な使い勝手の観点などから、使用頻度の最も高い冷蔵室４０を使用者の前面で見開いて出し入れできる上段位置に、重量物の出し入れもありかつ健康志向で日常的に鮮度管理もしたい野菜室４３を使いやすい中段に、そして長期間出し入れしないストック品などもありかつ取り扱い時の落下などへの配慮も必要な冷凍室４４を最下段にレイアウトした冷蔵庫が主流になっているが、このレイアウトにおいて圧縮機５２を含めた機械室の配置で最下段の冷凍室４４の収納容量を十分に確保できないのが欠点であったが、本実施の形態によると最下段の冷凍室４４の奥行きを野菜室４３と同様に拡大することができて、しかも室内の空間形状も複雑な形状とならず大きめの収納物も合理的に収納できて収納性を高めることができ、長期冷凍保存のストック食品のほか弁当や惣菜用など短期冷凍保存のフロー食品の増加による冷凍食品の利用頻度の増加にも十分に対応できる利便性の高い冷蔵庫を提供できる。   In particular, in recent years, from the viewpoint of the user's usage frequency, ease of freshness management, ergonomic ease of use, etc., the refrigerator compartment 40 with the highest frequency of use is placed in the upper position where it can be opened and removed in front of the user. The vegetable room 43, where you can put in and out things and want to maintain freshness on a daily basis, is easy to use, and there is a freezer room 44 that has stock items that you don't put in and out for a long time, and you need to consider dropping during handling. However, it is a disadvantage that the storage capacity of the lowermost freezer compartment 44 cannot be secured with the layout of the machine room including the compressor 52 in this layout. According to the present embodiment, the depth of the lowermost freezer compartment 44 can be expanded in the same manner as the vegetable compartment 43, and the indoor space shape does not become complicated and is a large storage item. Convenient enough to handle the increase in the frequency of use of frozen foods due to the increase in the number of flow foods for short-term frozen storage such as lunch boxes and prepared foods in addition to stock foods for long-term frozen storage, as well as rational storage and enhanced storage. A highly functional refrigerator can be provided.

これらの収納容量，収納性に関わる効果は、冷凍室４４，野菜室４３が引き出し式の貯蔵室でなくても享受できるものであるが、引き出し式の貯蔵室であればさらにその効用は大きい。すなわち、引き出し用のレール長さをほぼ同等のものとすることにより冷凍室容器７６の引き出し代と野菜室容器７５の引き出し代をほぼ同等に合わせることが可能となり、使用者が日常、両室の収納容器を引き出して引き出し代が異なることに対して違和感を覚えることがなく、また、引き出された収納容器の形状も双方がほぼ直方体状のシンプルな形状で揃えることができ、引き出したときの統一感があって冷蔵庫の商品品位としても高いものとなる。   The effects relating to the storage capacity and storage performance can be enjoyed even if the freezer compartment 44 and the vegetable compartment 43 are not drawer-type storage rooms, but the utility is even greater if they are drawer-type storage rooms. That is, by making the drawer rail lengths substantially the same, it becomes possible to match the drawer allowance of the freezer compartment 76 and the drawer allowance of the vegetable compartment container 75 almost equally, and the user can adjust the drawers of both rooms daily. There is no sense of incongruity when the storage container is pulled out and the pulling out is different, and the shape of the pulled out storage container can be aligned in a simple shape that is almost a rectangular parallelepiped. There is a feeling and it becomes high as the product quality of the refrigerator.

次に、冷凍サイクルの動作に関しては、庫内の設定された温度に応じて制御基板（図示せず）からの信号により冷凍サイクルが動作して冷却運転が行なわれる。圧縮機５２の動作により吐出された高温高圧の冷媒は、凹部５０に配置した凝縮器９１及び第一冷媒配管９４ａ及び第二冷媒配管９４ｂにて放熱して中温高圧の冷媒に凝縮液化し、第三冷媒配管９４ｃを経由して減圧装置９２により減圧されて低温低圧の液冷媒となって蒸発器８３に至る。   Next, regarding the operation of the refrigeration cycle, the refrigeration cycle is operated by a signal from a control board (not shown) according to the temperature set in the warehouse, and the cooling operation is performed. The high-temperature and high-pressure refrigerant discharged by the operation of the compressor 52 dissipates heat in the condenser 91, the first refrigerant pipe 94a, and the second refrigerant pipe 94b disposed in the recess 50, and is condensed and liquefied into a medium-temperature and high-pressure refrigerant. The pressure is reduced by the pressure reducing device 92 via the three refrigerant pipes 94 c to be a low-temperature and low-pressure liquid refrigerant and reach the evaporator 83.

冷却ファン８４の動作により、各貯蔵室内の空気と熱交換されて蒸発器８３内の冷媒は蒸発気化し、低温の冷気をダンパ装置（図示せず）などで供給制御することで、各貯蔵室の設定された所定の温度を維持できるよう冷却を行う。蒸発器８３を出た冷媒は吸入配管１１２を経て圧縮機５２へと吸い込まれる。   By the operation of the cooling fan 84, heat is exchanged with the air in each storage chamber, the refrigerant in the evaporator 83 evaporates, and supply of low-temperature cold air is controlled by a damper device (not shown) or the like. Cooling is performed so as to maintain the predetermined temperature set. The refrigerant exiting the evaporator 83 is sucked into the compressor 52 through the suction pipe 112.

本実施の形態の圧縮機５２は、凹部５０をできる限り小さく形成することで、冷蔵室４０への前方及び下方への突出を抑え、最上段の棚７０とほぼ同一の高さに抑えることで、手の届く位置の収納容積を減少させることなく、実際に使用する際に何ら問題なく収納性を高めることができ、かつ、凹部５０を幅方向に細長く形成し、放熱ファン９６を幅方向に風が流れるよう構成することで、一つの四角い筒状のダクトにすることができ、圧縮機５２の放熱に対して効率良く、かつ合理的な風路を構成することができる。   The compressor 52 of the present embodiment is formed by making the concave portion 50 as small as possible, thereby suppressing forward and downward protrusion to the refrigerator compartment 40 and suppressing the height to be substantially the same as that of the uppermost shelf 70. The storage capacity can be improved without any problem in actual use without reducing the storage capacity at a reachable position, and the recess 50 is elongated in the width direction, and the heat radiating fan 96 is formed in the width direction. By configuring so that the wind flows, it is possible to form a single square cylindrical duct, and it is possible to configure an efficient and rational air path for the heat dissipation of the compressor 52.

また、本実施の形態では、凹部５０に配置した凝縮器９１の配管を螺旋状に構成し、放熱ファン９６の吸込み側に設けることで、放熱ファン９６が運転している間は常に外気を取り入れ、また小さいスペースで配管の表面積を格段に増加させているので、圧縮機５２から吐出される高温高圧の冷媒を、断熱箱体３１内の第一冷媒配管９４ａに入る前に予冷を行うことができる。これにより、仮に使用者が断熱箱体３１の天面部や側面部に触れたときにでも火傷など高温に対する違和感を持つことがなく、また天面部に荷物を置いた場合でも温度が低いので荷物の変色や腐食することなく安心して使える冷蔵庫を提供できる。また、断熱箱体３１の表面温度も同様に低下することから、各貯蔵室内への熱の侵入を抑制でき消費電力量の低減にも繋がる。また、本実施の形態では、凝縮器９１が断熱箱体３１の底面付近に存在しないので、底面付近の構成を非常に簡素化することができ、その分貯蔵室の収納容積の増大を図れる。   Further, in the present embodiment, the pipe of the condenser 91 arranged in the recess 50 is formed in a spiral shape and provided on the suction side of the heat radiating fan 96 so that outside air is always taken in while the heat radiating fan 96 is operating. Moreover, since the surface area of the pipe is remarkably increased in a small space, the high-temperature and high-pressure refrigerant discharged from the compressor 52 can be pre-cooled before entering the first refrigerant pipe 94a in the heat insulating box 31. it can. As a result, even if the user touches the top or side of the heat insulation box 31, there is no sense of discomfort with high temperatures such as burns, and even when the bag is placed on the top, the temperature is low, A refrigerator that can be used with confidence without discoloration or corrosion can be provided. Moreover, since the surface temperature of the heat insulation box 31 falls similarly, the penetration | invasion of the heat | fever into each storage chamber can be suppressed, and it leads also to the reduction of power consumption. Moreover, in this Embodiment, since the condenser 91 does not exist in the vicinity of the bottom face of the heat insulation box 31, the structure near the bottom face can be greatly simplified, and the storage capacity of the storage chamber can be increased accordingly.

次に、本実施の形態の第一冷媒配管９４ａ、第二冷媒配管９４ｂ、第三冷媒配管９４ｃに関しては、第一冷媒配管９４ａ、第二冷媒配管９４ｂ、第三冷媒配管９４ｃを断熱箱体３１の外箱３３と内箱３２の間に配置することで、もともと断熱箱体３１の貯蔵室内外を断熱する発泡断熱材３４の箇所であり、いわば貯蔵室の収納容積に対しての無効スペースを利用して凝縮器９１と蒸発器８３とを接続することができるので、庫内の収納容積を減少することなく配管の構成ができる。   Next, regarding the first refrigerant pipe 94a, the second refrigerant pipe 94b, and the third refrigerant pipe 94c of the present embodiment, the first refrigerant pipe 94a, the second refrigerant pipe 94b, and the third refrigerant pipe 94c are insulated box 31. It is a place of the foam heat insulating material 34 which originally insulates the outside of the storage chamber of the heat insulating box 31 by being arranged between the outer box 33 and the inner box 32 of the inner box 32. Since the condenser 91 and the evaporator 83 can be connected to each other, piping can be configured without reducing the storage volume in the warehouse.

また、第一冷媒配管９４ａはアルミテープなどの放熱促進部材１００を介して外箱３３に貼り付けているので、通過する高温高圧の冷媒を外箱３３に効率良く熱伝導させ、貯蔵室側は発泡断熱材３４を充填しているので熱伝導はしにくく、より外箱３３への熱伝導を促進し、効率良く且つ合理的な放熱手段を構成することができる。また、第二冷媒配管９４ｂは前面開口の縁部１０１の貯蔵室側の前方に取り付けてあるため、上述の第一冷媒配管９４ａと同様の作用を得ることができる。一方、貯蔵室側からの冷気の熱伝導により縁部１０１や仕切壁４５の前方面は冷やされる傾向にあるが、第二冷媒配管９４ｂを縁部１０１や仕切壁４５の前方面に配置構成することで、その表面温度を高く維持することができるため結露や霜付きを防止することもできる。なお、仕切壁４５ｂのように配管の曲げ加工や配置構成のしにくい箇所などではヒータなどの熱源を用いることで、結露防止の効果はさほど変わらずに構成することも可能である。   In addition, since the first refrigerant pipe 94a is attached to the outer box 33 via a heat radiation promoting member 100 such as an aluminum tape, the high-temperature and high-pressure refrigerant passing therethrough is efficiently conducted to the outer box 33. Since the foam heat insulating material 34 is filled, it is difficult to conduct heat, the heat conduction to the outer box 33 is further promoted, and an efficient and rational heat dissipating means can be configured. Moreover, since the 2nd refrigerant | coolant piping 94b is attached ahead of the storage chamber side of the edge 101 of a front opening, the effect | action similar to the above-mentioned 1st refrigerant | coolant piping 94a can be acquired. On the other hand, the front surface of the edge portion 101 and the partition wall 45 tends to be cooled by the heat conduction of the cold air from the storage chamber side, but the second refrigerant pipe 94b is arranged and configured on the front surface of the edge portion 101 and the partition wall 45. As a result, the surface temperature can be kept high, so that condensation and frosting can be prevented. It should be noted that by using a heat source such as a heater in places such as the partition wall 45b where it is difficult to bend or arrange the piping, the effect of preventing condensation can be configured without much change.

次に、減圧装置１１０と吸入配管１１２に関しては、キャピラリなどの減圧装置１１０と吸入配管１１２は、通常半田などの密着手段によって配管同士が接触するよう構成され、比較的温度の高い減圧装置１１０と比較的温度の低い吸入配管１１２を互いに熱交換させている。これは、減圧装置１１０はさらに温度を低くでき冷媒を確実に液化させ、冷凍能力を向上することができるとともに、吸入配管１１２は温度を高くすることで確実に気化させ、圧縮機５２の吸込圧力を上げて冷媒循環量を増加させることによる、効率の良い冷凍サイクルを構成することができる。また断熱箱体３１の背壁内に収納され、発泡断熱材３４で覆われて断熱されていることから、蒸発器８３で気化した低温の冷媒が配管内を通っている吸入配管１１２の接触による結露などの心配が無い。   Next, with regard to the decompression device 110 and the suction pipe 112, the decompression device 110 such as a capillary and the suction pipe 112 are usually configured such that the pipes are in contact with each other by close contact means such as solder, and the decompression device 110 having a relatively high temperature. The suction pipes 112 having a relatively low temperature exchange heat with each other. This is because the decompression device 110 can further lower the temperature to reliably liquefy the refrigerant and improve the refrigerating capacity, and the suction pipe 112 can be reliably vaporized by increasing the temperature, and the suction pressure of the compressor 52 An efficient refrigeration cycle can be configured by increasing the amount of refrigerant circulation by increasing the amount of refrigerant. Further, since it is housed in the back wall of the heat insulation box 31 and is covered and insulated by the foam heat insulating material 34, the low temperature refrigerant vaporized by the evaporator 83 is brought into contact with the suction pipe 112 passing through the pipe. There is no worry about condensation.

このことからも、減圧装置１１０の入口側になるドライヤ１１１は上方凹部５０に配設する方が良く、仮に下方に配設すると減圧装置１１０と吸入配管１１２が熱交換をし難い構成になってしまうからである。また、ドライヤ１１１は凹部５０内で圧縮機５２よりも風上側におくことで、放熱された高圧冷媒を常に外気に接触させることができ、もし仮に圧縮機５２の風下側に位置させると放熱され液化した冷媒が再び加熱されて気化し、冷凍サイクルに不具合をきたす恐れがあるのに対し問題なく液化した冷媒を蒸発器８３に供給することが可能となる。   For this reason as well, it is better to dispose the dryer 111 on the inlet side of the decompression device 110 in the upper recess 50. If the dryer 111 is disposed below, the decompression device 110 and the suction pipe 112 are difficult to exchange heat. Because it ends up. Further, the dryer 111 is placed on the windward side of the compressor 52 in the recess 50, so that the radiated high-pressure refrigerant can always be brought into contact with the outside air. If the dryer 111 is positioned on the leeward side of the compressor 52, the heat is radiated. While the liquefied refrigerant is heated again and vaporizes, there is a possibility that the refrigeration cycle may be malfunctioned. However, the liquefied refrigerant can be supplied to the evaporator 83 without any problem.

このように、圧縮機５２が冷凍室４４の後方に存在せず、断熱箱体３１の天面後方に配置されることで、貯蔵室の収納容積が必ずしも増加し収納性が高まるというわけではなく、凝縮器９１、蒸発器８３、冷媒配管９４の配置の仕方次第で、各貯蔵室内の収納容積を大きく減少させることになる可能性もある。本実施の形態では、上述したように天面後方の凹部５０に圧縮機５２、凝縮器９１と、圧縮機５２と凝縮器９１とを冷却する放熱ファン９６を配置し、蒸発器８３を冷凍室４４と野菜室４３の背面に、冷媒配管を断熱箱体３１の内箱３２と外箱３３との間に、吸入配管１１２や減圧装置１１０を断熱箱体３１の背壁に設置したので、全ての冷凍サイクル部品を収納に対して無効スペースとも言える箇所に配置したことによって収納容積を増大し、収納性を高めることが出来たと言える。また、冷媒配管９４を断熱箱体３１の外箱３３に当接して配置したことで、収納容積を増大しながらも、凝縮器の放熱を効率良く行える冷凍サイクルを形成することが出来たと言える。   As described above, the compressor 52 does not exist behind the freezer compartment 44 and is arranged behind the top surface of the heat insulating box 31, so that the storage capacity of the storage compartment does not necessarily increase and the storage performance is not improved. Depending on the arrangement of the condenser 91, the evaporator 83, and the refrigerant pipe 94, the storage capacity in each storage chamber may be greatly reduced. In the present embodiment, as described above, the compressor 52, the condenser 91, and the heat dissipating fan 96 for cooling the compressor 52 and the condenser 91 are arranged in the recess 50 at the rear of the top surface, and the evaporator 83 is placed in the freezer compartment. 44 and the rear of the vegetable compartment 43, the refrigerant pipe is installed between the inner box 32 and the outer box 33 of the heat insulation box 31, and the suction pipe 112 and the decompression device 110 are installed on the back wall of the heat insulation box 31. It can be said that the storage capacity was increased and the storage performance could be improved by arranging the refrigeration cycle parts in locations that could be considered as invalid spaces for storage. Moreover, it can be said that the refrigerant | coolant piping 94 contact | abutted and arrange | positioned to the outer case 33 of the heat insulation box 31 was able to form the refrigerating cycle which can perform the thermal radiation of a condenser efficiently, increasing storage capacity.

（実施の形態２）
図１０は本発明の実施の形態２における冷蔵庫の高圧配管の位置構成図を示すものである。なお、実施の形態１と同一構成については同一符号を付して説明を省略する。 (Embodiment 2)
FIG. 10 shows a position configuration diagram of the high-pressure pipe of the refrigerator in the second embodiment of the present invention. In addition, about the same structure as Embodiment 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.

図１０に示すように、冷凍サイクルを構成する圧縮機５２、凝縮器９１、蒸発器８３を繋ぐ冷媒配管９４は、断熱箱体３１を構成する外箱３３の背面板３５と内箱３２の間に配置されている。   As shown in FIG. 10, the refrigerant pipe 94 connecting the compressor 52, the condenser 91, and the evaporator 83 constituting the refrigeration cycle is between the back plate 35 and the inner box 32 of the outer box 33 constituting the heat insulating box 31. Is arranged.

本実施の形態の冷媒配管９４は、第四冷媒配管１２０、第二冷媒配管９４ｂ、第五冷媒配管１２１で構成され、第四冷媒配管１２０は凝縮器９１と第二冷媒配管９４ｂをつなぐものであり、第五冷媒配管１２１は凝縮器９１及び第二冷媒配管９４ｂで放熱し凝縮液化した冷媒を再び凹部５０に戻し、減圧装置１１０に送るためのものである。   The refrigerant pipe 94 of the present embodiment is composed of a fourth refrigerant pipe 120, a second refrigerant pipe 94b, and a fifth refrigerant pipe 121, and the fourth refrigerant pipe 120 connects the condenser 91 and the second refrigerant pipe 94b. In addition, the fifth refrigerant pipe 121 is for returning the refrigerant that has radiated heat and condensed and liquefied in the condenser 91 and the second refrigerant pipe 94b to the recess 50 and to send to the decompression device 110.

以上のような構成においては、背面板３５の内側表面に予め放熱促進手段（図示せず）を介して貼り付けておき、断熱箱体３１の背面を構成するときには、背面板３５と冷媒配管１２０、１２１は一体化されているので、外箱３３を前述したように天面と側面を一部品で構成し、背面板３５をＵ字状になった天面と側面にはめ込むよう構成されているものに関しては、背面板３５に第四冷媒配管１２０及び第五冷媒配管１２１を放熱促進部材１００と一体化しておけば、凹部５０との緩衝もなく簡単にはめ込むことができるので、作業性を飛躍的に向上できる。   In the configuration as described above, when the back surface of the heat insulating box 31 is configured by pasting on the inner surface of the back plate 35 via a heat radiation accelerating means (not shown) in advance, the back plate 35 and the refrigerant pipe 120 are used. , 121 are integrated, so that the outer box 33 is configured with a single top and side as described above, and the back plate 35 is configured to fit into the U-shaped top and side. Regarding the thing, if the 4th refrigerant | coolant piping 120 and the 5th refrigerant | coolant piping 121 are integrated with the heat-dissipation promotion member 100 in the backplate 35, since it can be easily fitted without the buffer with the recessed part 50, workability will be leap. Can be improved.

なお、断熱箱体３１の天面、側面をＵ曲げする手段で述べたが、一つの面が一部品で構成されるパネル式のものであっても、背面板３５に冷媒配管９４を貼り付ける、及び背面板３５を取り付ける作業性の向上では同様の効果を得ることができる。   In addition, although the top surface and the side surface of the heat insulation box 31 have been described by means of U-bending, the refrigerant pipe 94 is pasted on the back plate 35 even if one surface is a panel type composed of one part. In the improvement of workability for attaching the back plate 35, the same effect can be obtained.

以上のように、本発明にかかる冷蔵庫は、手の届かない位置である断熱箱体の天面凹部に圧縮機等の機能部品を収容することで、無効スペースを極力減少し、最下段の貯蔵室の収納容積を増大し冷蔵庫全体の収納性を高めるとともに、圧縮機が上方に位置する冷蔵庫での機能部品の配置及びそれらを繋ぐ配管の構成を、放熱、凝縮、蒸発といった冷凍サイクルの機能を効率良く、かつ合理的に行えることができるので、同様のレイアウトを有する他の冷却機器にも適用できる。   As described above, the refrigerator according to the present invention reduces the ineffective space as much as possible by storing functional parts such as a compressor in the top surface recess of the heat insulation box that is out of reach, and stores the lowermost stage. In addition to increasing the storage capacity of the room and improving the storage capacity of the entire refrigerator, the function of the refrigeration cycle, such as heat dissipation, condensation, and evaporation, can be achieved by arranging the functional components in the refrigerator where the compressor is located above and the configuration of the piping connecting them. Since it can be performed efficiently and rationally, it can be applied to other cooling devices having the same layout.

本発明の実施の形態１における冷蔵庫の正面図Front view of the refrigerator in Embodiment 1 of the present invention 図１のＡ−Ａ線断面図AA line sectional view of FIG. 同実施の形態における冷蔵庫の冷媒配管構成図Refrigerant piping configuration diagram of the refrigerator in the same embodiment 同実施の形態における冷蔵庫の高圧配管の位置構成図Positional configuration diagram of high-pressure piping of the refrigerator in the same embodiment 同実施の形態における冷蔵庫の冷媒配管構成図Refrigerant piping configuration diagram of the refrigerator in the same embodiment 同実施の形態における断熱箱体の凹部正面図Concave front view of heat insulation box in the same embodiment 同実施の形態における断熱箱体の凹部上面図Top view of the recessed portion of the heat insulation box in the same embodiment 同実施の形態における断熱箱体の背面構成図Rear view of the heat insulation box in the same embodiment 同実施の形態における断熱箱体の凹部構成図Concave part block diagram of heat insulation box in the same embodiment 本発明の実施の形態２における冷蔵庫の高圧配管の位置構成図The position block diagram of the high voltage | pressure piping of the refrigerator in Embodiment 2 of this invention 従来の冷蔵庫の側面断面図Side sectional view of a conventional refrigerator 従来の冷蔵庫の背面構成図Rear view of a conventional refrigerator 従来の冷蔵庫の冷凍サイクル図Refrigeration cycle diagram of a conventional refrigerator

符号の説明Explanation of symbols

３０ 冷蔵庫本体
３１ 断熱箱体
３２ 内箱
３３ 外箱
３４ 発泡断熱材
３５ 背面板
５０ 凹部
５２ 圧縮機
８０ 冷却室
８３ 蒸発器
８４ 冷却ファン
９１ 凝縮器
９４ 冷媒配管
９４ａ 第一冷媒配管
９４ｂ 第二冷媒配管
９４ｃ 第三冷媒配管
９６ 放熱ファン
１１０ 減圧装置
１１２ 吸入配管
１２０ 第四冷媒配管
１２１ 第五冷媒配管 DESCRIPTION OF SYMBOLS 30 Refrigerator main body 31 Heat insulation box 32 Inner box 33 Outer box 34 Foaming insulation material 35 Back plate 50 Recessed part 52 Compressor 80 Cooling chamber 83 Evaporator 84 Cooling fan 91 Condenser 94 Refrigerant piping 94a First refrigerant piping 94b Second refrigerant piping 94c Third refrigerant pipe 96 Radiating fan 110 Pressure reducing device 112 Suction pipe 120 Fourth refrigerant pipe 121 Fifth refrigerant pipe

Claims (4)

断熱箱体と、前記断熱箱体の天面後方に天面よりも一段低く構成された凹部と、前記断熱箱体に備えられた圧縮機と凝縮器と蒸発器と、そのそれぞれを繋ぐ配管とを順に備えて一連の冷媒流路を形成した冷凍サイクルを備えた冷蔵庫において、前記凹部に前記圧縮機と前記凝縮器を収納するとともに、前記配管は前記断熱箱体の外箱に当接するように配置されることを特徴とする冷蔵庫。   A heat insulating box, a recessed portion formed one step lower than the top surface behind the top surface of the heat insulating box, a compressor, a condenser and an evaporator provided in the heat insulating box, and pipes connecting the respective In the refrigerator having a refrigeration cycle in which a series of refrigerant flow paths are formed in order, the compressor and the condenser are housed in the recess, and the pipe is in contact with the outer box of the heat insulating box. A refrigerator characterized by being arranged. 前記外箱に当接する配管を前記断熱箱体の少なくとも側面及び前面に配置することを特徴とする請求項１に記載の冷蔵庫。   The refrigerator according to claim 1, wherein pipes that contact the outer box are arranged on at least a side surface and a front surface of the heat insulating box. 前記外箱に当接する配管を前記断熱箱体の少なくとも背面及び前面に配置することを特徴とする請求項１に記載の冷蔵庫。   The refrigerator according to claim 1, wherein piping that contacts the outer box is disposed at least on a back surface and a front surface of the heat insulating box. 前記凝縮器は、前記圧縮機の吐出配管と配管で接続され、前記断熱箱体の外箱に当接するように配置される配管は、前記凝縮器と配管で接続されることを特徴とする請求項１から３のいずれか一項に記載の冷蔵庫。   The said condenser is connected with the discharge piping of the said compressor by piping, and piping arrange | positioned so that it may contact | abut to the outer box of the said heat insulation box body is connected with the said condenser by piping. Item 4. The refrigerator according to any one of Items 1 to 3.

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