JP2006343078A - Refrigerator - Google Patents

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JP2006343078A
JP2006343078A JP2005171703A JP2005171703A JP2006343078A JP 2006343078 A JP2006343078 A JP 2006343078A JP 2005171703 A JP2005171703 A JP 2005171703A JP 2005171703 A JP2005171703 A JP 2005171703A JP 2006343078 A JP2006343078 A JP 2006343078A
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Prior art keywords
compressor
main body
refrigerator
rear plate
condenser
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Noriaki Sakamoto
則秋 阪本
Akihiro Noguchi
明裕 野口
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Toshiba Corp
Toshiba Consumer Marketing Corp
Toshiba Lifestyle Products and Services Corp
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Toshiba Corp
Toshiba Consumer Marketing Corp
Toshiba Home Appliances Corp
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Priority to JP2005171703A priority Critical patent/JP2006343078A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To increase the storage capacity of a refrigerator without increasing an external dimension of a refrigerator main body by reducing and compacting an installation space of a heat radiation fan and refrigerating cycle components in a machine chamber and on a main body bottom surface by applying an effective heat radiating constitution of a compressor and a condenser. <P>SOLUTION: This refrigerator comprises the machine chamber 15 formed by shifting to one width wise direction and recessing in a lower part of a back surface of the main body 1 composed of a heat insulating box, the compressor 12 mounted in the machine chamber and discharging a refrigerant during a refrigerating cycle, a thermosiphon 21 soaked in oil in the compressor at its lower end, having the closed loop shape, and extending to a main body upper portion corresponding to the compressor at its upper end to be mounted at a heat insulating material 3 side of an outer casing rear plate 2a, and the condenser 13 mounted over a plane space at the other side of the outer casing rear plate provided with the thermosiphon. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、冷媒圧縮機や凝縮器などの配置構成を改良して機械室をコンパクト化した冷蔵庫に関する。   The present invention relates to a refrigerator in which a machine room is made compact by improving the arrangement configuration of a refrigerant compressor, a condenser, and the like.

近年、一般の家庭用冷蔵庫の大形化は著しく、台所スペースの関係からも外形サイズは限界の状態である。そのため、さらに収納容積を拡大するための施策としては、真空断熱パネルなど断熱性能の高い材料によって断熱厚さを低減し、その分庫内容積を拡大したり、庫内外の部品レイアウトを改良してデッドスペースを低減するなど種々の方策が検討されている。   In recent years, general refrigerators for home use have been remarkably increased in size, and the external size is in a limit state in terms of kitchen space. Therefore, measures to further expand the storage capacity include reducing the heat insulation thickness with a material with high heat insulation performance such as a vacuum heat insulation panel, increasing the internal volume of the compartment, and improving the internal and external component layout. Various measures such as reducing dead space have been studied.

本件特許出願人においても、図5や図6に示すように、冷蔵庫本体(51)の背面下部に形成した機械室(55)内の幅方向の一方に冷媒圧縮機(52)を寄せて設置し、貯蔵室内を冷却する冷却器(59)を前記圧縮機(52)上方の庫内側で、且つ圧縮機とは幅方向の反対側に配置するとともに、凝縮器(53)を平板状にして本体の底面部に設置し、さらに、冷蔵庫の制御電源基板(57)を機械室(55)内の幅方向における圧縮機の他方の幅広空間に配置して冷却器(59)と圧縮機(52)、凝縮器(53)および制御電源基板(57)の配置関係や構造を変更することにより、冷却器(59)の熱的ロスを低減し、断熱効率を向上するとともに機械室(55)や凝縮器(53)の放熱効率を高めて省電力効果を得ることができる冷蔵庫を出願している(特許文献1参照)。
特開2005−98559公報
In the present applicant, as shown in FIG. 5 and FIG. 6, the refrigerant compressor (52) is placed close to one side in the width direction in the machine room (55) formed at the lower back of the refrigerator body (51). The cooler (59) for cooling the storage chamber is disposed on the inner side above the compressor (52) and on the opposite side of the compressor in the width direction, and the condenser (53) is formed in a flat plate shape. It is installed on the bottom surface of the main body, and the control power supply board (57) of the refrigerator is arranged in the other wide space of the compressor in the width direction in the machine room (55) to arrange the cooler (59) and the compressor (52 ), By changing the arrangement and structure of the condenser (53) and control power supply board (57), the thermal loss of the cooler (59) is reduced, the heat insulation efficiency is improved and the machine room (55) and We have applied for a refrigerator that can improve the heat dissipation efficiency of the condenser (53) and obtain a power saving effect (see Patent Document 1).
JP 2005-98559 A

しかしながら、上記特許文献1の構成では、凝縮器(53)は冷蔵庫本体(51)の底面部に設置されており、所定の放熱量を得るためには凝縮器(53)自体の容量を大きくする必要があり、冷蔵庫本体(51)の全幅に亙り所定の厚み寸法で設置することから占有スペースが大きくなってその分庫内収納容積を減ずるとともに材料コストが高くなる欠点があった。   However, in the configuration of Patent Document 1, the condenser (53) is installed on the bottom surface of the refrigerator main body (51), and the capacity of the condenser (53) itself is increased in order to obtain a predetermined heat radiation amount. Since it is necessary and is installed with a predetermined thickness dimension over the entire width of the refrigerator main body (51), there is a disadvantage that the occupied space is increased, the storage capacity in the compartment is reduced, and the material cost is increased.

また、機械室(55)には前記圧縮機(52)とともに本体前面下部から吸い込んだ外気を凝縮器(53)を介して圧縮機(52)に送風する放熱ファン(58)を設置しており、この放熱ファン(58)は、機械室(55)内において、本体の幅方向に軸流となるように圧縮機(52)に隣接して設置されているため、放熱ファン(58)およびファンケーシング(60)の奥行きや高さ寸法が大きく冷蔵庫の全幅に亙ってスペースが必要なことから機械室スペースの縮小に繋がらず、庫内の有効容積拡大への貢献度は低いものであった。   In addition, the machine room (55) is equipped with a heat dissipation fan (58) that blows outside air sucked from the lower front of the main body to the compressor (52) through the condenser (53) together with the compressor (52). The heat radiating fan (58) is installed in the machine room (55) adjacent to the compressor (52) so as to have an axial flow in the width direction of the main body. The depth and height of the casing (60) is large, and space is required over the entire width of the refrigerator. This does not lead to a reduction in the space in the machine room, and the contribution to expanding the effective volume in the cabinet is low. .

また、他の従来例としては、凝縮器を圧縮機や放熱ファンとともに機械室内に収納する構成が存在するが、この場合も、機械室のスペースは冷蔵庫本体の全幅に亙る設置が必要であり、依然として、機械室スペースの縮小には繋がらなかった。   In addition, as another conventional example, there is a configuration in which the condenser is housed in the machine room together with the compressor and the heat radiating fan, but also in this case, the space of the machine room needs to be installed over the entire width of the refrigerator body, Still, the machine room space was not reduced.

本発明は上記点を考慮してなされたものであり、圧縮機や凝縮器の効果的な放熱構成を採用することにより、機械室や本体底面における放熱ファンや冷凍サイクル部品の配置スペースを削減してコンパクト化し、冷蔵庫本体の外形サイズを大きくしないで庫内の収納容積を拡大す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 in consideration of the above points, and by adopting an effective heat dissipation configuration of a compressor and a condenser, the arrangement space of the heat dissipation fan and the refrigeration cycle parts in the machine room and the bottom of the main body is reduced. It is an object of the present invention to provide a refrigerator that can be made compact and can expand the storage volume in the cabinet without increasing the external size of the refrigerator body.

上記課題を解決するために、本発明の冷蔵庫は、断熱箱からなる本体の背面下部における幅方向の一方に寄せて凹成形した機械室と、この機械室内に設置した冷凍サイクル中に冷媒を吐出する圧縮機と、この圧縮機内のオイル中に下端を浸漬して閉ループ状をなしその上端を圧縮機に対応する本体上部まで延出して外箱後板の断熱材側に配設したサーモサイホンと、このサーモサイホンを配設した外箱後板の他方側の面空間に亙って設置した凝縮管とから構成したことを特徴とするものである。   In order to solve the above-described problems, the refrigerator of the present invention discharges a refrigerant into a machine room that is concave-shaped toward one side in the width direction at the lower back of the main body that is a heat insulating box, and a refrigeration cycle installed in the machine room. And a thermosiphon that has a closed loop formed by immersing the lower end in the oil in the compressor to form a closed loop, and that the upper end extends to the upper part of the main body corresponding to the compressor and is disposed on the heat insulating material side of the rear plate of the outer box And a condenser tube installed over the surface space on the other side of the outer box rear plate on which the thermosiphon is disposed.

上記構成によって、圧縮機および凝縮器を放熱ファンを使用しないで効率的に冷却し所定の放熱効果を得られるとともに、機械室などのスペースをコンパクト化することができ、本体外形サイズに対する庫内収納容積を拡大して容積効率の高い冷蔵庫を得ることができる。   With the above configuration, the compressor and condenser can be efficiently cooled without using a heat dissipating fan to obtain a predetermined heat dissipating effect, and the space such as the machine room can be made compact and stored in the cabinet for the main body outer size. A refrigerator with high volumetric efficiency can be obtained by expanding the volume.

以下、図面に基づき本発明の1実施形態について説明する。図1に縦断面図、図2に背部からの斜視図を示す冷蔵庫本体(1)は、薄鋼板で形成した外箱(2)の内面に断熱壁(3)を介して設けた内箱(4)により貯蔵空間を形成し、仕切壁により冷蔵室(5)や野菜室(6)、冷凍室(7)など複数の貯蔵室に区分している。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The refrigerator main body (1) which shows the longitudinal cross-sectional view in FIG. 1, and the perspective view from a back part in FIG. 2 is the inner box (3) provided in the inner surface of the outer box (2) formed with the thin steel plate via the heat insulation wall (3). The storage space is formed by 4) and divided into a plurality of storage rooms such as a refrigerator compartment (5), a vegetable compartment (6), and a freezer compartment (7) by a partition wall.

各貯蔵室は、冷蔵空間や冷凍空間毎に配置した冷蔵用冷却器(8)や冷凍用冷却器(9)およびファン(10)(11)によってそれぞれ所定の設定温度に冷却保持されるものであり、各冷却器(8)(9)は、図3に示すように、圧縮機(12)や凝縮器(13)などからなる冷凍サイクルの運転によって冷媒を供給される。   Each storage room is cooled and held at a predetermined set temperature by a refrigeration cooler (8), a refrigeration cooler (9), and a fan (10) (11) arranged for each refrigeration space or refrigeration space. In addition, as shown in FIG. 3, each of the coolers (8) and (9) is supplied with a refrigerant by the operation of a refrigeration cycle including a compressor (12) and a condenser (13).

冷凍サイクル中の圧縮機(12)は、冷蔵庫本体(1)の背面下部における幅方向の一方に寄せて凹成形した機械室(15)に設置されており、本体底面に設けたコンプ台(16)上にクッション体を介して取り付けられている。   The compressor (12) in the refrigeration cycle is installed in a machine room (15) that is concavely formed near one side in the width direction at the lower back of the refrigerator body (1), and a compressor base (16 ) It is attached via a cushion body.

なお、特に図示しないが、前記圧縮機(12)の上部には前記冷蔵や冷凍用冷却器(8)(9)を除霜した際に発生する除霜水を受ける蒸発皿を配置しており、圧縮機(12)の熱量により自動的に除霜水を蒸発させるようにしている。   Although not shown in particular, an evaporating dish for receiving defrost water generated when the refrigerator (8) (9) is defrosted is disposed above the compressor (12). The defrost water is automatically evaporated by the heat quantity of the compressor (12).

凝縮器(13)は、圧縮機(12)からの高温高圧の冷媒ガスを受けて放熱させ凝縮させるものであって、凝縮器(13)からの冷媒は本体の前面開口周縁に配設した防露パイプ(14)を経て流路切替弁(17)で流路が切り替えられ、減圧管である冷蔵冷凍それぞれの毛細管(18)(19)を経由して各貯蔵室内の冷蔵用冷却器(8)あるいは冷凍用冷却器(9)に供給され、蒸発することで貯蔵室内を所定の空気温度に冷却するものであり、図4に示すように、蛇行形成した冷媒の凝縮管(13a)を、本体背面を形成する外箱後板(2a)の幅方向の過半を占める面空間に亙ってその裏面の断熱材(3)側に配設している。   The condenser (13) receives the high-temperature and high-pressure refrigerant gas from the compressor (12), dissipates the heat, and condenses the refrigerant from the condenser (13). The flow path is switched by the flow path switching valve (17) through the dew pipe (14), and the refrigeration coolers (8 ) Or the refrigeration cooler (9), and evaporates to cool the storage chamber to a predetermined air temperature. As shown in FIG. 4, the meandering refrigerant condensing tube (13a) Over the surface space that occupies the majority of the width direction of the outer box rear plate (2a) forming the back surface of the main body, it is arranged on the heat insulating material (3) side of the back surface.

この凝縮器(13)を形成する凝縮管(13a)は、外箱後板(2a)に対して良好に熱伝導するように、良熱伝導性のホットメルト(20)やアルミ箔などで後板(2a)面に密着保持されており、さらに、凝縮管(13a)を配設した後板(2a)の側部における所定の幅寸法を上下方向に亙り、後板面に対して所定角度で前部方向に傾斜する傾斜面(2b)を形成している。この構成により、冷蔵庫背面が台所の壁面などに押し付けて据え付けられても、所定の空間を確保することができ、必要な放熱性能を得ることができる。   The condenser tube (13a) that forms this condenser (13) is backed by a good heat conductive hot melt (20), aluminum foil or the like so as to conduct heat well to the outer box rear plate (2a). The plate (2a) is closely held on the surface, and further, a predetermined width dimension at the side portion of the rear plate (2a) on which the condensing tube (13a) is disposed is turned up and down, and a predetermined angle with respect to the rear plate surface. The inclined surface (2b) inclined in the front direction is formed. With this configuration, even when the refrigerator back is pressed against the wall of the kitchen or the like, a predetermined space can be secured and necessary heat dissipation performance can be obtained.

そして、後板(13)に配設した冷媒の凝縮管(13a)は、その端部を本体を形成する外箱(2)の少なくとも一方の側板(2c)の内面に凝縮管(13b)として延長させ、前記後板(2a)と同様に蛇行配設し、さらに、冷蔵庫本体の各貯蔵室(5)(6)(7)の前面開口部の周縁に防露パイプ(14)として延設しており、冷媒管を放熱させるとともにその熱伝導によって開口部の温度を上昇させ、該部分の露付きを防止する加熱体として利用している。   And the refrigerant | coolant condensing tube (13a) arrange | positioned at the back plate (13) is used as a condensing tube (13b) on the inner surface of at least one side plate (2c) of the outer box (2) which forms the main body. Extend and meander like the rear plate (2a), and extend as a dew-proof pipe (14) around the front opening of each storage room (5) (6) (7) of the refrigerator body In addition, the refrigerant pipe is used as a heating body that dissipates heat and raises the temperature of the opening portion by heat conduction to prevent dew from the portion.

しかして、前記本体背面下部の一方に凹成形した機械室(15)内に設置された圧縮機(12)には、閉ループ状をなして下端を圧縮機ケース内の潤滑オイル中に浸漬し、その上端を圧縮機(12)に対応する本体(1)の上部まで延出する環状管(21a)からなるサーモサイホン(21)を設けている。   Then, in the compressor (12) installed in the machine chamber (15) that is concavely formed in one of the lower back of the main body, the lower end is immersed in the lubricating oil in the compressor case in a closed loop shape, A thermosiphon (21) comprising an annular pipe (21a) whose upper end extends to the top of the main body (1) corresponding to the compressor (12) is provided.

サーモサイホン(21)を形成する閉ループの環状管(21a)は、管内を真空引きして内部圧力を1kPa以下にするとともに、前記冷凍サイクル中の冷媒と同物質とした、例えば、炭化水素系冷媒などの作動流体を総内容積の10〜70容量%封入しており、前記作動流体の相変化による潜熱を利用して熱輸送をおこない、圧縮機(12)中のオイルを冷却する。   The closed loop annular tube (21a) forming the thermosiphon (21) is evacuated to reduce the internal pressure to 1 kPa or less, and is made of the same material as the refrigerant in the refrigeration cycle. The working fluid such as 10 to 70% by volume of the total internal volume is sealed, and heat transport is performed using latent heat due to the phase change of the working fluid to cool the oil in the compressor (12).

この環状管(21a)は、外箱後板(2a)における前記凝縮管(13a)配設面の他方側の面空間の断熱材(3)側に、前記凝縮管(13a)と同様に熱伝導が良好になるように後板(2a)に密着して配設されており、圧縮機(12)の熱を本体上方に輸送して外気中に放熱するように循環する。   This annular pipe (21a) is heated on the heat insulating material (3) side of the surface space on the other side of the surface where the condensing pipe (13a) is provided in the outer box rear plate (2a) in the same manner as the condensing pipe (13a). It is arranged in close contact with the rear plate (2a) so that conduction is good, and it circulates so that the heat of the compressor (12) is transported upward and dissipated into the outside air.

上記構成による圧縮機(12)の放熱量について概略説明する。今例えば、圧縮機(12)の直径を160mmとし、圧縮機表面の平均熱伝達率を15W/K・m、圧縮機温度を90℃、周囲空気温度を45℃とすると、必要とする圧縮機の放熱量は54Wとなる。これに対して、上記サーモサイホン(21)構成によると、背面の放熱面積は、0.15m×1.5mで、熱伝達率は7W/K・m、サーモサイホン放熱部の温度は70℃となる。そして周囲温度を35℃とすると、その放熱量は55Wとなり、従来の放熱ファンを用いた場合とほぼ同等の放熱量が確保できるものである。 An outline of the heat radiation amount of the compressor (12) having the above configuration will be described. For example, if the diameter of the compressor (12) is 160 mm, the average heat transfer coefficient of the compressor surface is 15 W / K · m 2 , the compressor temperature is 90 ° C, and the ambient air temperature is 45 ° C, the required compression The heat dissipation of the machine is 54W. On the other hand, according to the thermosiphon (21) configuration, the heat radiation area on the back surface is 0.15 m × 1.5 m, the heat transfer coefficient is 7 W / K · m 2 , and the temperature of the thermosiphon heat radiation part is 70 ° C. It becomes. When the ambient temperature is 35 ° C., the heat dissipation amount is 55 W, and a heat dissipation amount substantially equal to that when a conventional heat dissipation fan is used can be secured.

次に、凝縮器の放熱について説明する。従来の強制空冷方式の凝縮器(59)の放熱面積を0.7mとし、平均熱伝達率を15W/K・m、凝縮器温度を45℃、周囲温度を35℃とすると、その放熱量は105Wである。これに対して、本発明構成での外箱後板(2a)に配設した凝縮管(13a)を自然対流で放熱した場合は、背面部の放熱面積が0.5m×1.5mで、熱伝達率は7W/K・mであり、後板(2a)の温度を45℃、周囲温度を35℃とすると放熱量は59.5Wとなり、これだけでは放熱量は不足するが、前記したように、一方の冷蔵庫側板(2c)に配設した凝縮管(13b)部分をも放熱面積に加えると放熱量はほぼ倍増して119Wとなり、従来の強制循環方式に匹敵する放熱量を確保することができる。 Next, heat dissipation of the condenser will be described. When the heat dissipation area of the conventional forced air cooling condenser (59) is 0.7 m 2 , the average heat transfer coefficient is 15 W / K · m 2 , the condenser temperature is 45 ° C., and the ambient temperature is 35 ° C. The amount of heat is 105W. On the other hand, when the condenser pipe (13a) disposed on the outer box rear plate (2a) in the configuration of the present invention radiates heat by natural convection, the heat radiation area of the back surface is 0.5 m × 1.5 m, The heat transfer coefficient is 7 W / K · m 2 , and if the temperature of the rear plate (2a) is 45 ° C. and the ambient temperature is 35 ° C., the heat dissipation amount is 59.5 W. Thus, when the condenser pipe (13b) portion arranged on one refrigerator side plate (2c) is also added to the heat radiation area, the heat radiation amount is almost doubled to 119 W, and the heat radiation amount comparable to the conventional forced circulation system is secured. be able to.

前記放熱量の試算については、前記前面開口部周縁に配設した防露加熱体としての凝縮管(14)の放熱量は含んでいないことから、これらを加味すると放熱ファンを利用せずとも充分な放熱量を見込むことができるものであり、外箱後板(2a)や側板(2c)に対する凝縮管(13a)(13b)の実質的な配設量はサイクル設計の中で設定すればよい。   Regarding the calculation of the heat dissipation amount, it does not include the heat dissipation amount of the condensation tube (14) as a dew-proof heater disposed on the periphery of the front opening, so that these factors are sufficient without using a heat dissipation fan. The amount of heat radiation can be estimated, and the substantial arrangement amount of the condenser tubes (13a) and (13b) with respect to the outer case rear plate (2a) and the side plate (2c) may be set in the cycle design. .

上記からも理解されるように、本発明構成では、圧縮機(12)や凝縮器(13)に送風してこれを冷却する放熱ファンを必要とせず、機械室(15)に設置される部品は、主に圧縮機(12)のみで、他は冷凍サイクル配管の接合部や電気部品程度であることから、機械室は、冷蔵庫本体(1)の背面下部に全幅に亙って設ける必要はなく、特に奥行きや高さ方向への設置寸法が大きくなる放熱ファンが存在しないことから、本体幅方向の一方に寄せて凹成形することで機械室(15)を形成すればよく、その分庫内側の貯蔵品収納スペースを拡大することが可能となる。   As can be understood from the above, in the configuration of the present invention, a component installed in the machine room (15) without the need for a heat dissipating fan that blows air to the compressor (12) or the condenser (13) and cools it. Is mainly the compressor (12) and the others are about the joints and electrical parts of the refrigeration cycle piping, so the machine room should be provided over the full width at the lower back of the refrigerator body (1) In particular, there is no heat dissipation fan that increases the installation dimensions in the depth and height direction. Therefore, the machine room (15) can be formed by forming a concave shape by moving it toward one side in the body width direction. It is possible to expand the storage space for the stored items inside.

なお、冷蔵庫の運転を制御する電源回路やインバータスイッチング回路などを搭載したプリント配線基板は冷蔵庫本体の外箱天井部に配設している。   In addition, the printed wiring board carrying the power supply circuit, inverter switching circuit, etc. which control the driving | operation of a refrigerator is arrange | positioned in the outer box ceiling part of the refrigerator main body.

したがって、本体(1)の背面下部の一側に凹成形した機械室(15)の他の側方における凝縮管(13a)を配設した後板(2a)の裏面は断熱壁(3)を介して庫内貯蔵空間とすることができるものであるが、外箱(2)の外壁面には加熱体となるサーモサイホン(21)の環状管(21a)や蛇行状の凝縮管(13a)(13b)が配設されて断熱性能への影響があることから、ウレタンフォームからなる発泡断熱材(3)で形成された断熱壁中に、コア材を包むガスバリア材内を真空に保持した真空断熱パネル(22)を壁面全体に亙って配設することで断熱力を増大している。   Therefore, the back surface of the rear plate (2a) provided with the condensing pipe (13a) on the other side of the machine room (15) that is concavely formed on one side of the lower back of the main body (1) is provided with a heat insulating wall (3). It can be used as an internal storage space through the outer wall surface of the outer box (2), but the annular tube (21a) of the thermosiphon (21) and the meandering condensing tube (13a) serving as a heating element. Since (13b) is disposed and has an influence on the heat insulation performance, a vacuum in which the inside of the gas barrier material wrapping the core material is held in a vacuum in the heat insulating wall formed of the foamed heat insulating material (3) made of urethane foam. The heat insulation power is increased by arranging the heat insulation panel (22) over the entire wall surface.

前記真空断熱パネル(22)は、あらかじめ貯蔵室を形成する内箱(4)の裏面に仮固定しておき、この内箱(4)を、後板(2a)や側板(2c)の裏面にサーモサイホン(21)の環状管(21a)や凝縮管(13a)(13b)を固着した外箱(2)内に配置して結合し、その後、内外箱(4)(2)間の残余の空間にウレタンフォーム断熱材(3)の原液を注入し発泡充填することで断熱壁中に埋設するようにする。   The vacuum heat insulating panel (22) is temporarily fixed to the back surface of the inner box (4) forming the storage chamber in advance, and this inner box (4) is attached to the back surface of the rear plate (2a) and the side plate (2c). The annular pipe (21a) and the condenser pipe (13a) (13b) of the thermosiphon (21) are arranged and joined in the fixed outer box (2), and then the remaining space between the inner and outer boxes (4) (2) An undiluted solution of urethane foam heat insulating material (3) is injected into the space and filled with foam to be embedded in the heat insulating wall.

上記構成によれば、冷凍運転にともなって放熱が必要となるがそれぞれの熱源温度が相違する圧縮機(12)や凝縮器(13)を、熱放散面積の大きな後板(2a)を使用し、且つ、サーモサイホン(21)と凝縮器(13)との冷媒管の配設ゾーンを区画して、個々に放熱させるようにしたことから、放熱作用を効果的におこなうことができるとともに、放熱ファンや凝縮器を設置しないことから機械室スペースを縮減することができるものである。   According to the above configuration, the rear plate (2a) having a large heat dissipation area is used for the compressor (12) and the condenser (13) that require heat radiation in accordance with the refrigeration operation but have different heat source temperatures. Moreover, since the refrigerant pipe arrangement zone of the thermosiphon (21) and the condenser (13) is divided and radiated individually, it is possible to effectively dissipate heat and dissipate heat. Since no fan or condenser is installed, the space in the machine room can be reduced.

また、従来は本体(1)底面に配設していた凝縮器のスペースを削除できることから、外箱(2)の底板部の位置を、全幅および奥行きに亙って従来の凝縮器を設置していた高さ寸法分だけ下方に下げることができ、その分冷蔵庫本体(1)の外形サイズを大きくすることなく庫内収納容量を拡大することができる。   In addition, since the space of the condenser which has been conventionally arranged on the bottom of the main body (1) can be deleted, the conventional condenser is installed over the entire width and depth of the position of the bottom plate part of the outer box (2). It can be lowered downward by the amount of the height, and the storage capacity in the cabinet can be expanded without increasing the external size of the refrigerator main body (1).

さらに、従来は、外箱底面の下部に高温の凝縮器を設置していたことから、内箱底面部の断熱厚さを大きくとる必要があったが、上記実施例では、外箱底面下に高温部材が存在しないのでその分断熱厚を薄くすることも可能であり、これによれば、さらに庫内側の容積を増加することができる。   Furthermore, conventionally, since a high-temperature condenser was installed at the bottom of the bottom of the outer box, it was necessary to increase the heat insulation thickness of the bottom of the inner box. Since there is no member, it is possible to reduce the heat insulation thickness accordingly, and according to this, it is possible to further increase the internal volume.

そしてまた、放熱ファンを使用することがないので、機械室スペースの削減に貢献するのみでなく、ファンの回転騒音をなくして冷蔵庫の運転音を低減することができ、また、電気的エネルギーを使用しないサーモサイホンの利用と合わせて消費電力の低減にも寄与することができる。   And since there is no use of a heat dissipation fan, it not only contributes to reducing the space in the machine room, but it can also reduce the operation noise of the refrigerator by eliminating the rotation noise of the fan, and also uses electrical energy It can contribute to the reduction of power consumption in combination with the use of thermosiphon that does not.

なお、上記実施例では、真空断熱パネル(22)を、内箱(4)の裏面に配設するようにしたが、これに限らず、外箱(2)の裏面に配設するようにしてもよい。この場合、例えば、ガスバリア材をステンレスシートなどで形成してそのパネル表面に凝縮器(13)の蛇行状凝縮管(13a)(13b)やサーモサイホン(21)の環状管(21a)を収納する凹溝を成形し、真空断熱パネル(22)の表面で環状管(21a)や凝縮管(13a)(13b)を外箱(2)の裏面に押圧して配置するようにしてもよく、真空断熱パネル(22)の配設位置も外箱(2)や内箱(4)の裏面全面ではなく、冷却器(9)や環状管(21a)、凝縮管(13a)(13b)の設置個所など、庫内外の温度差が大きくなる部分のみに設けるようにしてもよい。   In addition, in the said Example, although the vacuum heat insulation panel (22) was arrange | positioned on the back surface of the inner box (4), it should not be restricted to this but should be arrange | positioned on the back surface of the outer box (2). Also good. In this case, for example, the gas barrier material is formed of a stainless steel sheet or the like, and the meandering condenser tubes (13a) and (13b) of the condenser (13) and the annular tube (21a) of the thermosiphon (21) are accommodated on the panel surface. A concave groove may be formed, and the annular tube (21a) or the condensation tube (13a) (13b) may be pressed against the back surface of the outer box (2) on the surface of the vacuum heat insulation panel (22). The location of the heat insulation panel (22) is not the entire back surface of the outer box (2) or inner box (4), but the location of the cooler (9), annular pipe (21a), and condenser pipe (13a) (13b) For example, it may be provided only in a portion where the temperature difference between the inside and outside of the cabinet increases.

また、機械室(15)内におけるレイアウトととして、圧縮機(12)を背面からみて左側に寄せて設置し、凝縮器(13)などを他側に配置したが、左右が逆でもよいことはいうまでもなく、また、庫内における貯蔵室の配置についても実施例に限るものではない。   Also, as the layout in the machine room (15), the compressor (12) was placed on the left side when viewed from the back, and the condenser (13) etc. were placed on the other side, but the left and right may be reversed. Needless to say, the arrangement of the storage chamber in the storage is not limited to the embodiment.

本発明によれば、機械室をコンパクトにして庫内容積を大きくした冷蔵庫に利用することができる。   ADVANTAGE OF THE INVENTION According to this invention, it can utilize for the refrigerator which made the machine room compact and enlarged the internal volume.

本発明の1実施形態を示す冷蔵庫の縦断面図である。It is a longitudinal cross-sectional view of the refrigerator which shows one Embodiment of this invention. 図1の冷蔵庫を背面方向からみた斜視図である。It is the perspective view which looked at the refrigerator of FIG. 1 from the back direction. 図1における冷蔵庫の冷凍サイクルを示す概略図である。It is the schematic which shows the refrigerating cycle of the refrigerator in FIG. 図2における外箱後板部分の横断面図である。It is a cross-sectional view of the outer box rear plate portion in FIG. 従来の冷蔵庫の機械室を示す背面図である。It is a rear view which shows the machine room of the conventional refrigerator. 図5の縦断面図である。It is a longitudinal cross-sectional view of FIG.

符号の説明Explanation of symbols

1 冷蔵庫本体 2 外箱 2a 後板
2b 傾斜面 2c 側板 3 発泡断熱材
4 内箱 7 冷凍室 8、9 冷却器
12 圧縮機 13 凝縮器 13a、13b 凝縮管
14 防露パイプ 15 機械室 16 コンプ台
20 ホットメルト 21 サーモサイホン 21a 環状管
22 真空断熱パネル
DESCRIPTION OF SYMBOLS 1 Refrigerator main body 2 Outer box 2a Rear plate 2b Inclined surface 2c Side plate 3 Foam heat insulating material 4 Inner box 7 Freezer compartment 8, 9 Cooler
12 Compressor 13 Condenser 13a, 13b Condensate tube
14 Dew prevention pipe 15 Machine room 16 Comp stand
20 Hot melt 21 Thermosiphon 21a Annular tube
22 Vacuum insulation panel

Claims (4)

断熱箱からなる本体の背面下部における幅方向の一方に寄せて凹成形した機械室と、この機械室内に設置した冷凍サイクル中に冷媒を吐出する圧縮機と、この圧縮機内のオイル中に下端を浸漬して閉ループ状をなしその上端を圧縮機に対応する本体上部まで延出して外箱後板の断熱材側に配設したサーモサイホンと、このサーモサイホンを配設した外箱後板の他方側の面空間に亙って設置した凝縮管とから構成したことを特徴とする冷蔵庫。   A machine room that is recessed toward one side in the width direction at the lower back of the main body consisting of a heat insulation box, a compressor that discharges refrigerant during the refrigeration cycle installed in this machine room, and a lower end that is placed in the oil in this compressor A thermosiphon that is immersed to form a closed loop and that has its upper end extended to the top of the main body corresponding to the compressor and disposed on the heat insulating material side of the outer box rear plate, and the other of the outer box rear plate on which the thermosiphon is disposed A refrigerator characterized by comprising a condenser tube installed over the surface space on the side. 凝縮管を本体を形成する外箱の少なくとも一方の側板内面、および本体の前面開口部周縁に延設したことを特徴とする請求項1記載の冷蔵庫。   2. The refrigerator according to claim 1, wherein the condensing tube is extended to the inner surface of at least one side plate of the outer box forming the main body and to the periphery of the front opening of the main body. 凝縮管を配設した外箱後板と内箱との間に真空断熱パネルを配置し、残余の断熱空間にウレタンフォーム断熱材を発泡充填して前記真空断熱パネルを埋設したことを特徴とする請求項1記載の冷蔵庫。   A vacuum heat insulation panel is disposed between the outer box rear plate and the inner box in which the condenser tube is disposed, and the vacuum heat insulation panel is embedded by foaming and filling urethane foam heat insulation material in the remaining heat insulation space. The refrigerator according to claim 1. 凝縮管を配設した外箱後板の側部を後板面に対して上下に亙り所定の幅寸法で前部方向へ傾斜形成させたことを特徴とする請求項1記載の冷蔵庫。
2. The refrigerator according to claim 1, wherein a side portion of the outer plate rear plate on which the condensing tube is disposed is inclined up and down with respect to the rear plate surface and inclined in a front direction with a predetermined width dimension.
JP2005171703A 2005-06-10 2005-06-10 Refrigerator Pending JP2006343078A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010243055A (en) * 2009-04-06 2010-10-28 Panasonic Corp Refrigerator
JP2012063039A (en) * 2010-09-14 2012-03-29 Hitachi Appliances Inc Refrigerator
CN102401526A (en) * 2010-09-16 2012-04-04 Lg电子株式会社 Refrigerator
JP2012202603A (en) * 2011-03-25 2012-10-22 Panasonic Corp Refrigerator
CN103189693A (en) * 2010-11-11 2013-07-03 阿塞里克股份有限公司 Refrigerator with cooled machine room
JP2015064200A (en) * 2015-01-15 2015-04-09 株式会社東芝 Heat-insulating cabinet
JP2016102618A (en) * 2014-11-28 2016-06-02 株式会社東芝 refrigerator
JP2017078539A (en) * 2015-10-20 2017-04-27 三菱電機株式会社 refrigerator
US9726417B2 (en) 2012-07-06 2017-08-08 Samsung Electronics Co., Ltd. Refrigerator
JPWO2016163026A1 (en) * 2015-04-10 2017-10-26 三菱電機株式会社 refrigerator
EP2869006B1 (en) * 2012-06-27 2021-07-21 Toshiba Lifestyle Products & Services Corporation Refrigerator

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010243055A (en) * 2009-04-06 2010-10-28 Panasonic Corp Refrigerator
JP2012063039A (en) * 2010-09-14 2012-03-29 Hitachi Appliances Inc Refrigerator
CN102401526A (en) * 2010-09-16 2012-04-04 Lg电子株式会社 Refrigerator
CN103189693A (en) * 2010-11-11 2013-07-03 阿塞里克股份有限公司 Refrigerator with cooled machine room
CN103189693B (en) * 2010-11-11 2015-11-25 阿塞里克股份有限公司 There is the refrigerator of cooling machine chamber
JP2012202603A (en) * 2011-03-25 2012-10-22 Panasonic Corp Refrigerator
EP2869006B1 (en) * 2012-06-27 2021-07-21 Toshiba Lifestyle Products & Services Corporation Refrigerator
US9726417B2 (en) 2012-07-06 2017-08-08 Samsung Electronics Co., Ltd. Refrigerator
JP2016102618A (en) * 2014-11-28 2016-06-02 株式会社東芝 refrigerator
JP2015064200A (en) * 2015-01-15 2015-04-09 株式会社東芝 Heat-insulating cabinet
JPWO2016163026A1 (en) * 2015-04-10 2017-10-26 三菱電機株式会社 refrigerator
JP2017078539A (en) * 2015-10-20 2017-04-27 三菱電機株式会社 refrigerator

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