JP2006343080A - Refrigerator - Google Patents

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Publication number
JP2006343080A
JP2006343080A JP2005171717A JP2005171717A JP2006343080A JP 2006343080 A JP2006343080 A JP 2006343080A JP 2005171717 A JP2005171717 A JP 2005171717A JP 2005171717 A JP2005171717 A JP 2005171717A JP 2006343080 A JP2006343080 A JP 2006343080A
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Japan
Prior art keywords
condenser
machine room
refrigerator
compressor
fan
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JP2005171717A
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Japanese (ja)
Inventor
Akihiro Noguchi
明裕 野口
Noriaki Sakamoto
則秋 阪本
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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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Application filed by Toshiba Corp, Toshiba Consumer Marketing Corp, Toshiba Home Appliances Corp filed Critical Toshiba Corp
Priority to JP2005171717A priority Critical patent/JP2006343080A/en
Publication of JP2006343080A publication Critical patent/JP2006343080A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00Problems to be solved
    • F25B2500/01Geometry problems, e.g. for reducing size
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00Evaporators; Condensers
    • F25B39/04Condensers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00General constructional features
    • F25D23/003General constructional features for cooling refrigerating machinery

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  • Removal Of Water From Condensation And Defrosting (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator improved in the layout relation and structure in a machine chamber for a refrigerant compressor, a radiating fan, a condenser, and the like, thereby improving heat radiation efficiency in the machine room and installing each element component compactly to reduce a machine chamber space and to enlarge storage volume in the refrigerator by that much. <P>SOLUTION: The compressor 12, the condenser 13, and the radiating fan 18 forcibly air-cooling the compressor and condenser are installed in the machine chamber 15 formed at the back face lower part of a refrigerator body 1, and air flow blown off from the radiating fan is allowed to cross at least a plurality of times upward along the front and rear faces of the condenser to exchange heat. <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最早限界の状態である。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種々の方策が検討されている。   In recent years, the size of general household refrigerators has been remarkably increased, and the external size is now at its limit due to the 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 for reducing dead space have been studied.

本件特許出願人においても、図8や図9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 patent applicant as well, as shown in FIG. 8 and FIG. 9, 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 main 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いるとともに放熱ファン(58)に対しては上流側に配置されていることから、凝縮器(53)を流通する空気流は吸い込み流のため風力が弱く放熱効率は低いものであった。したがって、所定の放熱量を得るためには凝縮器自体の容量を大きくする必要があり、占有スペースが大きくなるとともに部品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 body (51) and is disposed upstream of the heat dissipating fan (58). The air flow through the vessel (53) was a suction flow, so the wind was weak and the heat dissipation efficiency was low. Therefore, in order to obtain a predetermined heat radiation amount, it is necessary to increase the capacity of the condenser itself, and there is a disadvantage that the occupied space is increased and the component cost is increased.

また、放熱面積を拡大すべく平板状の凝縮器(53)を本体底面に配置した場合は、放熱ファン(58)に対する幅面積が大きいため、送風による熱交換しない部分が凝縮器(53)に生じることになり、さらに熱交換が不充分なことから該部分の雰囲気温度が高くなり、庫内への断熱性能が低下するという新たな問題があった。   In addition, when a flat condenser (53) is placed on the bottom of the main body to increase the heat dissipation area, the width area for the heat dissipation fan (58) is large, so the part that does not exchange heat by blowing air is placed in the condenser (53). In addition, since the heat exchange is insufficient, the ambient temperature of the portion becomes high, and there is a new problem that the heat insulation performance in the storage is lowered.

一方、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い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。   On the other hand, the 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. Since the depth and height of the casing (60) are large, the space for the machine room is not reduced, and the contribution to the expansion of the effective volume in the warehouse 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、この場合は、スペース上の制約から蒸発皿を圧縮機の上部などに設置しなければならないので機械室の高さ寸法が高くなり、依然として、機械室スペースの縮小には繋がらなかった。   As another conventional example, there is a configuration in which a condenser is housed in a machine room together with a compressor and a heat radiating fan. In this case, an evaporating dish must be installed above the compressor due to space constraints. As a result, the height dimension of the machine room was increased, and 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、冷媒圧縮機や放熱ファン、および凝縮器などの機械室内における配置関係や構造を改良することにより、機械室内の放熱効率を向上するとともに各要素部品をコンパクトに設置して機械室スペースを縮小し、その分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 improving the arrangement relationship and structure in the machine room such as the refrigerant compressor, the heat radiating fan, and the condenser, the heat radiation efficiency in the machine room is improved and each It aims at providing the refrigerator which can install an element component compactly, can reduce a machine room space, and can expand the storage capacity in the warehouse.

上記課題を解決するために、本発明の請求項1記載の冷蔵庫は、冷蔵庫本体の背面下部に形成した機械室内に、圧縮機、凝縮器、および圧縮機と凝縮器を強制空冷する放熱ファンを設置し、放熱ファンから吹き出された空気流を、前記凝縮器の表裏面を上方に向かって少なくとも複数回横断させて熱交換するようにしたことを特徴とするものである。   In order to solve the above-described problems, a refrigerator according to claim 1 of the present invention includes a compressor, a condenser, and a heat dissipating fan for forcibly cooling the compressor and the condenser in a machine room formed at the lower back of the refrigerator body. The air flow blown out from the heat radiating fan is heat-exchanged by traversing the front and back surfaces of the condenser upward at least a plurality of times.

また、請求項2記載の冷蔵庫は、本体の背面下部に形成された機械室と、この機械室内の幅方向の一方に寄せて設置された冷媒圧縮機と、機械室の幅方向の他方側に配置され機械室の背面壁を形成するカバー体と外箱後板とで形成されるダクト間隙に沿って設けた凝縮器と、前記圧縮機と凝縮器とを強制空冷するように凝縮器に対向して軸流が本体の前後方向になるように配置した放熱ファンとからなり、前記凝縮器は、上端外面をカバー体に当接させ、上下方向の中間部内面を外箱後板部に当接させるとともに、前記放熱ファンの駆動により本体底部から吸引した空気流を前記凝縮器下方部の内から外へ横断し、その上方で外から内方向に横断して本体外に抜け出るようにしたことを特徴とする。   The refrigerator according to claim 2 is a machine room formed at the lower back of the main body, a refrigerant compressor installed close to one side in the width direction of the machine room, and the other side in the width direction of the machine room. A condenser provided along a duct gap formed by a cover body that forms a back wall of the machine room and a rear plate of the outer box, and is opposed to the condenser so as to forcibly air-cool the compressor and the condenser. The condenser is arranged so that the axial flow is in the front-rear direction of the main body, and the condenser has the upper end outer surface in contact with the cover body and the inner surface in the vertical direction is contacted with the rear plate portion of the outer box. The air flow sucked from the bottom of the main body by driving the heat radiating fan crossed from the inside of the lower part of the condenser to the outside, and crossed in the inward direction from the top to the outside to escape from the main body. It is characterized by.

請求項1の発明によれば、狭い機械室空間であっても放熱ファンからの空気流は、凝縮器と良好に接触して熱交換効率を向上させることができ、請求項2によれば、要素部品の効率的配置構成によって、機械室スペースのコンパクト化とともに圧縮機や凝縮器の放熱効率を向上することができ、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。   According to the invention of claim 1, even in a narrow machine room space, the air flow from the heat radiating fan can be in good contact with the condenser to improve the heat exchange efficiency. Efficient arrangement of component parts can reduce the space in the machine room and improve the heat dissipation efficiency of the compressor and condenser, and increase the storage capacity in the cabinet relative to the external size to obtain a refrigerator with high volumetric efficiency. Can do.

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に背部からの機械室部分の斜視図を示す冷蔵庫本体(1)は、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 of the machine room part from a back part in FIG. 2 is the inner box (4) provided in the inner surface of the outer box (2) via the heat insulation wall (3). ) To form a storage space, and the partition wall is divided into a plurality of storage rooms such as a refrigerator compartment (5), a vegetable compartment (6), and a freezer compartment (7).

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、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, each of the coolers (8) and (9) is supplied with refrigerant by 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)の背面下部に形成した機械室(15)に設置されており、本体の幅方向に亙って設けたコンプ台(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) formed in the lower back of the refrigerator main body (1) and is placed on a compressor base (16) provided in the width direction of the main body. It is attached via a cushion body.

機械室(15)は、図3に縦断面図、図4に横断面図で示すように、本体の背面下部に冷凍室(7)側に突出する段部(17)を形成し、この段部(17)によって、幅方向に亙る所定の奥行きと高さ寸法を有する空間を形成するようにしており、機械室(15)空間の幅方向の一方に寄せて前記冷媒圧縮機(12)を設置し、圧縮機から他方の幅広空間側を放熱ダクトとして外気を機械室(15)内に導入する放熱ファン(18)および前記凝縮器(13)、除霜水を蒸発させる蒸発皿(19)などを設置している。   As shown in the longitudinal sectional view in FIG. 3 and the transverse sectional view in FIG. 4, the machine room (15) is formed with a step portion (17) projecting toward the freezer compartment (7) at the lower back of the main body. The section (17) forms a space having a predetermined depth and height dimension extending in the width direction, and moves the refrigerant compressor (12) toward one side in the width direction of the machine room (15) space. Installed and radiator fan (18) that introduces outside air into machine room (15) with the other wide space side from the compressor as the heat radiating duct, the condenser (13), and the evaporating dish (19) for evaporating the defrost water Etc. are installed.

前記機械室(15)の背部は、カバー体(23)で覆われており、このカバー体(23)は前記凝縮器(13)の上端部まで覆うように配設して上端の外箱後板(2a)との間に開口を形成し、凝縮器(13)を立設した後板の凹部(22)とカバー体(23)で形成されるダクト(24)に連なる空気流出口A(25)を形成している。   The back of the machine room (15) is covered with a cover body (23), and this cover body (23) is disposed so as to cover the upper end of the condenser (13), and is installed behind the upper outer box. An air outlet A (connected to a duct (24) formed by a recess (22) of the plate and a cover body (23) after an opening is formed between the plate (2a) and the condenser (13) is erected. 25) is formed.

このとき、背部に立設した凝縮器(13)の幅方向の中心位置に対して放熱ファン(18)の中心位置は近傍の外箱側板側に寄せるとともに、凝縮器への送風が斜め上方に向かって吹き出すように傾斜させて設置し、カバー体(23)の形状によって放熱ファン(18)から吹き出された空気流が冷蔵庫本体幅のやや中心方向のやや上方部に向かって流れるように配置させている。また、放熱ファン(18)を傾けることにより、ファンの吸い込み面が床面の吸込み口(21)に対してより向き合うようになるため、効果的に空気を吸い込むことができ、風量を増して熱交換性能を高めることができる。   At this time, the center position of the heat radiating fan (18) is brought closer to the adjacent outer box side plate side with respect to the center position in the width direction of the condenser (13) erected on the back, and the air blown to the condenser is obliquely upward. Installed so that the airflow blown from the heat radiating fan (18) flows toward the slightly upper part of the refrigerator body width by the shape of the cover body (23). ing. In addition, by tilting the radiating fan (18), the suction surface of the fan becomes more facing the suction port (21) on the floor surface, so air can be sucked in effectively, increasing the air volume and increasing the heat. Exchange performance can be improved.

前記放熱ファン(18)は、前記段部(17)との間に若干の間隙を形成し、周縁を機械室(15)の上下面に、左右部分を前記段部(17)に当接するように設置して機械室(15)内と外部とを区画したファンケーシング(20)のベルマウスに取り付けられており、軸流が機械室(15)の前後方向となるように配置されている。   The heat radiating fan (18) forms a slight gap with the stepped portion (17), the peripheral edge is in contact with the upper and lower surfaces of the machine room (15), and the left and right portions are in contact with the stepped portion (17). It is attached to a bell mouth of a fan casing (20) which is installed in the machine room (15) and divides the inside and outside of the machine room (15), and is arranged so that the axial flow is in the front-rear direction of the machine room (15).

この放熱ファン(18)を取り付けたファンケーシング(20)の下端前方のコンプ台(16)には、ファンケーシング(20)幅に亙って複数の開口からなる外気の吸込み口(21)を穿設している。   A compressor base (16) in front of the lower end of the fan casing (20) to which the heat radiating fan (18) is attached has an air intake port (21) formed of a plurality of openings across the width of the fan casing (20). Has been established.

そして、前記放熱ファン(18)と凝縮器(13)の下方におけるコンプ台(16)上には、冷却器(8)(9)からの除霜水を受けて蒸発処理する蒸発皿(19)を配置している。この蒸発皿(19)は内部に前記圧縮機(12)からの吐出パイプ(26)を延設して水中に浸漬させ、高温の冷媒熱により除霜水を蒸発させるように構成している。   An evaporating dish (19) that receives defrosted water from the coolers (8) and (9) and evaporates on the compressor base (16) below the heat radiating fan (18) and the condenser (13). Is arranged. The evaporating dish (19) is configured such that a discharge pipe (26) from the compressor (12) is extended inside and immersed in water, and defrosted water is evaporated by high-temperature refrigerant heat.

また、前記凝縮器(13)に隣接する圧縮機(12)の上方に位置する後板の凹部(22)には、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(27)を外箱後板(2a)に沿うように配置し、その外表面をカバー体(23)で覆っている。カバー体(23)の内面側における凝縮器(13)と配線基板(27)との間には、仕切リブ(23a)を突設し、放熱ファン(18)からの空気流を左右に分流した一部を前記仕切リブ(23a)の下端からプリント配線基板(27)部分に流入させ、これを冷却するように作用させている。   In addition, a printed circuit board on which a power supply circuit, an inverter switching circuit, and the like for controlling the operation of the refrigerator are mounted in the recess (22) of the rear plate located above the compressor (12) adjacent to the condenser (13) (27) is arranged along the outer box rear plate (2a), and its outer surface is covered with a cover body (23). A partition rib (23a) is projected between the condenser (13) and the wiring board (27) on the inner surface side of the cover body (23), and the air flow from the heat dissipating fan (18) is divided into left and right. A part is allowed to flow from the lower end of the partition rib (23a) into the printed wiring board (27) to cool the part.

しかして、前記凝縮器(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)からの冷媒は減圧管である毛細管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、蛇行形成した冷媒管の両面に放熱フィンとしてのワイヤを溶着して平板状としたワイヤコンデンサを、例えば3層に重ね合わせ、上端が前記機械室(15)より上方まで延出して、外箱後板(2a)に形成した凹部(22)内に上部が後方に傾斜するように立設させており、前記放熱ファン(18)に対向して配置している。   The condenser (13) receives the high-temperature and high-pressure refrigerant gas from the compressor (12), dissipates heat, and condenses the refrigerant from the condenser (13) by a capillary tube that is a decompression tube. The refrigerant is supplied to a refrigeration cooler (8) or a refrigeration cooler (9) in each storage chamber via a vapor, and the storage chamber is cooled to a predetermined air temperature by evaporating. A wire capacitor in the form of a flat plate by welding wires as heat-dissipating fins on both sides is stacked on, for example, three layers, and the upper end extends above the machine room (15) to form the outer box rear plate (2a) The upper part is erected in the recessed part (22) so as to incline backward, and is arranged to face the radiating fan (18).

このとき、凝縮器(13)は、その上端外面をカバー体(23)の上部内面側に当接させるとともに、傾斜している下方部の内面側を前記段部(17)を形成している外箱後板の凹部(22)の角部に直接あるいは間接的に当接し、最下端は前記カバー体(23)との間に空間を形成するように配設している。   At this time, the condenser (13) abuts the upper outer surface of the condenser (13) on the upper inner surface side of the cover body (23) and forms the stepped portion (17) on the inner surface side of the inclined lower portion. The outer box rear plate is in direct or indirect contact with the corner of the recess (22), and the lowermost end is disposed so as to form a space with the cover body (23).

上記構成により、放熱ファン(18)の回転時には、前記図3や図4の矢印で示すように、冷蔵庫前方の外気を本体の底部を介して前記吸込み口(21)から吸引し、ベルマウス部から機械室(15)内に吹き出すようにしており、機械室(15)内に吹き出された空気は軸流に沿って後方に送流され、後板の凹部(22)とカバー体(23)で形成されるダクト(24)内に流入する。   With the above configuration, when the heat dissipating fan (18) rotates, the outside air in front of the refrigerator is sucked from the suction port (21) through the bottom of the main body as shown by the arrows in FIG. 3 and FIG. The air blown into the machine room (15) is sent backward along the axial flow, and the recess (22) on the rear plate and the cover body (23) It flows into the duct (24) formed by

そして、ファンから直接吹き出される速い風速と低温な外気温により、凝縮器(13)下部の3層の冷媒パイプとワイヤフィン部内を熱交換しながら横断し、次にカバー体(23)との間の前記空間から再び凝縮器(13)の中央高さ部分と熱交換しながら段部(17)の上部を上昇しながら横断するものであり、パイプとフィン内を通過するとともに少なくとも凝縮器(13)を2回横断することから効率よく熱交換してこれを冷却するものである。   Then, with the high wind speed blown directly from the fan and the low external temperature, the refrigerant pipe crosses the three layers of the refrigerant pipe and the wire fin part under the condenser (13) while exchanging heat, and then the cover body (23) The heat exchanger exchanges heat with the central height portion of the condenser (13) from the space in between, and rises across the upper portion of the stepped portion (17), passes through the pipes and fins, and at least the condenser ( Since 13) is traversed twice, the heat is efficiently exchanged and cooled.

特に、上記凝縮器(13)は、従来の放熱ファンの吸い込み側に配置した構成による風力不足と大きな表面積から熱交換に寄与しない箇所を生じる場合と相違して、無駄をなくして大きな熱交換風量が得られ、凝縮器自体のコンパクト化をもはかることができる。   In particular, the condenser (13) has a large amount of heat exchange airflow that eliminates waste and generates a large amount of heat exchange airflow, unlike the case where the conventional arrangement of the heat dissipating fan is arranged on the suction side of the heat dissipation fan and a portion that does not contribute to heat exchange due to a large surface area And the condenser itself can be made compact.

同時に、吹き出し空気の一部はカバー体(23)に衝接することで本体幅の中心方向に分流され、圧縮機(12)と熱交換して放熱した後、カバー体(23)の側方に穿設した空気流出口B(28)から外部に流出する。この場合の空気流もファン(18)からの吹き出し空気であるため風速も速く、空気温度も従来に比し未だ熱交換していないことから低温であり冷却効果は大きいものであり、圧縮機(12)の放熱効率を高めることができ、効果的な冷凍運転により消費電力を低減するとともに、分流された空気流の一部によりプリント配線基板(27)の冷却も効果的におこなうことができる。   At the same time, a part of the blown air is shunted toward the center of the body width by abutting against the cover body (23). After exchanging heat with the compressor (12) and dissipating heat, It flows out from the drilled air outlet B (28). Since the air flow in this case is also blown air from the fan (18), the wind speed is fast, and the air temperature is not yet heat exchanged compared to the conventional, so the temperature is low and the cooling effect is large. The heat dissipation efficiency of 12) can be increased, and the power consumption can be reduced by effective refrigeration operation, and the printed wiring board (27) can be effectively cooled by a part of the diverted air flow.

このとき、放熱ファン(18)の回転軸は機械室(15)の前後方向に一致させており、従来の機械室の幅方向に沿わせた構成に対して、ファン径を含めたケーシング(20)寸法が奥行き寸法に影響を与えることがないので放熱ファン(18)設置のための奥行き寸法を浅くすることができ、機械室(15)容積を大きく削減することができる。   At this time, the rotating shaft of the heat radiating fan (18) is aligned with the longitudinal direction of the machine room (15), and the casing (20 including the fan diameter) is compared with the configuration along the width direction of the conventional machine room. ) Since the dimension does not affect the depth dimension, the depth dimension for installing the heat radiating fan (18) can be reduced, and the volume of the machine room (15) can be greatly reduced.

また、蒸発皿(19)に対しては、圧縮機(12)と凝縮器(13)側への双方の空気がその上部を流れるものであり、前記皿内部に配設した吐出パイプ(26)の熱、および圧縮機や凝縮器による機械室(15)内の高温雰囲気と相俟って効果的に除霜水の蒸発作用をおこなうようにしている。
なお、放熱ファン(18)への外気の進入通路となるファンケーシング(20)下方の蒸発皿(19)と対向する位置には、小孔(20a)を穿設している。この小孔(20a)は、冷蔵庫本体(1)の底部から放熱ファン(18)の下流側に吹き出した空気の一部を負圧により吸い込み、放熱ファン(18)をショートサーキットさせることで蒸発皿(19)の上部に空気の流れを生じさせ、蒸発作用を促進するものである。
In addition, for the evaporating dish (19), the air to both the compressor (12) and the condenser (13) flows through the upper part, and the discharge pipe (26) disposed inside the dish. The defrosted water is effectively evaporated in combination with the heat and the high temperature atmosphere in the machine room (15) by the compressor and condenser.
In addition, a small hole (20a) is formed at a position facing the evaporating dish (19) below the fan casing (20) that serves as an outside air entry passage to the heat radiating fan (18). This small hole (20a) sucks a part of the air blown from the bottom of the refrigerator body (1) to the downstream side of the radiating fan (18) by negative pressure, and makes the radiating fan (18) a short circuit to evaporate the dish. It creates an air flow at the top of (19) and promotes evaporation.

そしてなお、前記凝縮器(13)に対する放熱ファン(18)の回転方向を数ヶ月、あるいは1年に一度程度の任意時期に逆転させるようにすれば、凝縮パイプやワイヤフィン上に付着した埃などを吹き飛ばして清掃できるとともに、凝縮器の目詰まりを解消して熱交換効率を向上することができる。   Furthermore, if the rotation direction of the heat radiating fan (18) with respect to the condenser (13) is reversed at an arbitrary time of several months or once a year, dust adhering to the condenser pipe or wire fins, etc. Can be cleaned by blowing away, and the clogging of the condenser can be eliminated and the heat exchange efficiency can be improved.

上記構成によって、機械室(15)内における圧縮機(12)、凝縮器(13)、放熱ファン(18)、蒸発皿(19)およびプリント配線基板(27)や各冷凍サイクルの配管は放熱効率を含め効果的に配置することができるため、機械室自体をコンパクト化できて従来に比し容積を縮小することができ、その分庫内の収納容積を拡大することができるものである。 さらに、従来、平板状の凝縮器を設置するために設けていた本体の底面空間をなくすことができるため、冷蔵庫本体(1)の底面を形成する外箱底板の位置を従来の凝縮器設置高さ分だけ下げることができ、これにともなって、従来の内箱底面位置も、外箱底板の下方への突出寸法分が下がることになり、下降分の容積を収納容積として拡大することができる。   With the above configuration, the compressor (12), condenser (13), heat dissipation fan (18), evaporating dish (19), printed wiring board (27) and piping of each refrigeration cycle in the machine room (15) are radiated efficiently. Therefore, the machine room itself can be made compact, the volume can be reduced as compared with the conventional case, and the storage volume in the compartment can be increased. Furthermore, since the bottom surface space of the main body that has been conventionally provided for installing the flat plate-like condenser can be eliminated, the position of the outer box bottom plate that forms the bottom surface of the refrigerator main body (1) is set to the conventional condenser installation height. As a result, the bottom position of the inner box of the conventional inner box is also lowered by the downward projecting dimension of the outer box bottom plate, and the lowered volume can be expanded as the storage volume. .

また、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と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(2b)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。   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 with the bottom of the inner box. In the above embodiment, the bottom of the outer box (2b) Since there is no high-temperature member below, it is possible to reduce the heat insulation thickness accordingly, and according to this, it is possible to further increase the internal volume.

凝縮器形状については、上記に限らず、同一部分に同一符号を附した図5に示すように、前記同様のワイヤとフィンからなる平板状の凝縮器(33)を略く字状になるよう上下に折曲形成し、上下端の外面をカバー体(23)の内面に当接させるとともに、上下間の所定の内面を前記段部(17)部分の後板の凹部(22)に当接させることで、放熱ファン(18)からの送風が凝縮器(33)の内外面を複数回に亙って横断するようにしてもよい。   The shape of the condenser is not limited to the above, and as shown in FIG. 5 in which the same reference numerals are assigned to the same parts, the flat condenser (33) composed of the same wire and fins as described above is formed in a substantially square shape. Fold up and down, and the outer surfaces of the upper and lower ends are in contact with the inner surface of the cover body (23), and the predetermined inner surface between the upper and lower sides is in contact with the recess (22) of the rear plate of the step (17) portion By doing so, you may make it the ventilation from a heat radiating fan (18) cross the inner and outer surface of a condenser (33) over multiple times.

また、他の実施例として、同様の平板状の凝縮器(33′)を図6に示す円弧状に曲成形して前記同様に配設してもよく、さらに、図7のように凝縮器(43)を略S字状に形成したり、図示しないがジグザグに形成して、上端を外箱後板の凹部(22)部分に当接し、中間部分を段部(17)に、最下端をカバー体(23)との間に空間を形成するように配設すれば、放熱ファン(18)からの空気流は、矢印で示すように、3回に亙って凝縮器(43)の表裏面を横断することになり、より効果的に熱交換させることができる。   As another embodiment, a similar flat condenser (33 ') may be bent in the shape of an arc shown in FIG. 6 and arranged in the same manner as described above. Further, as shown in FIG. (43) is formed in a substantially S shape, or is formed in a zigzag shape (not shown), with the upper end abutting against the recess (22) portion of the rear plate of the outer box, the intermediate portion at the stepped portion (17), and the bottom end Is arranged so as to form a space with the cover body (23), the air flow from the heat dissipating fan (18) is directed to the condenser (43) three times as indicated by arrows It will cross the front and back surfaces, and heat can be more effectively exchanged.

なお、上記各実施例では、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、左右一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。   In each of the above embodiments, as the layout in the machine room (15), the compressor (12) is installed close to the left side when viewed from the back, and the condenser (13) is arranged on the other side. Needless to say, one may be reversed, and the arrangement of the storage chamber in the warehouse 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の冷蔵庫の機械室を背面方向からみた斜視図である。It is the perspective view which looked at the machine room of the refrigerator of FIG. 1 from the back direction. 図2における機械室部分の縦断面図である。It is a longitudinal cross-sectional view of the machine room part in FIG. 図2における機械室の横断面図である。It is a cross-sectional view of the machine room in FIG. 図2における凝縮器の他の実施例構成を示す縦断面図である。It is a longitudinal cross-sectional view which shows the other Example structure of the condenser in FIG. 図5の変形例を示す縦断面図である。It is a longitudinal cross-sectional view which shows the modification of FIG. 図6のさらに他の変形例を示す縦断面図である。It is a longitudinal cross-sectional view which shows the other modification of 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8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 底面 3 断熱壁 4 内箱
7 冷凍室 8、9 冷却器 12 圧縮機
13、33、33′、43 凝縮器 15 機械室 16 コンプ台
17 段部 18 放熱ファン 19 蒸発皿
20 ファンケーシング 20a 小孔 21 吸込み口
22 凹部 23 カバー体 23a 仕切リブ
24 ダクト 25 空気流出口A 26 吐出パイプ
27 プリント配線基板 28 空気流出口B
DESCRIPTION OF SYMBOLS 1 Refrigerator main body 2 Outer box 2a Rear plate 2b Bottom face 3 Heat insulation wall 4 Inner box 7 Freezer compartment 8, 9 Cooler 12 Compressor
13, 33, 33 ′, 43 Condenser 15 Machine room 16 Comp stand
17 Step 18 Radiating fan 19 Evaporating dish
20 Fan casing 20a Small hole 21 Suction port
22 Recess 23 Cover body 23a Partition rib
24 Duct 25 Air outlet A 26 Discharge pipe
27 Printed wiring board 28 Air outlet B

Claims (6)

冷蔵庫本体の背面下部に形成した機械室内に、圧縮機、凝縮器、および圧縮機と凝縮器を強制空冷する放熱ファンを設置し、放熱ファンから吹き出された空気流を、前記凝縮器の表裏面を上方に向かって少なくとも複数回横断させて熱交換するようにしたことを特徴とする冷蔵庫。   A compressor, a condenser, and a heat dissipating fan that forcibly air-cools the compressor and the condenser are installed in the machine room formed in the lower back of the refrigerator main body, and the air flow blown from the heat dissipating fan is sent to the front and back surfaces of the condenser. A refrigerator characterized in that heat exchange is performed by traversing at least a plurality of times upward. 冷蔵庫本体の背面下部に形成された機械室と、この機械室内の幅方向の一方に寄せて設置された冷媒圧縮機と、機械室の幅方向の他方側に配置され機械室の背面壁を形成するカバー体と外箱後板とで形成されるダクト間隙に沿って設けた凝縮器と、前記圧縮機と凝縮器とを強制空冷するように凝縮器に対向して軸流が本体の前後方向になるように配置した放熱ファンとからなり、前記凝縮器は、上端外面をカバー体に当接させ、上下方向の中間部内面を外箱後板部に当接させるとともに、前記放熱ファンの駆動により本体底部から吸引した空気流を前記凝縮器下方部の内から外へ横断し、その上方で外から内方向に横断して本体外に抜け出るようにしたことを特徴とする冷蔵庫。   A machine room formed at the lower back of the refrigerator main body, a refrigerant compressor installed close to one side in the width direction of the machine room, and a rear wall of the machine room formed on the other side in the width direction of the machine room A condenser provided along a duct gap formed by a cover body and a rear plate of the outer box, and an axial flow facing the condenser so as to forcibly air-cool the compressor and the condenser in the longitudinal direction of the main body The condenser is configured so that the upper end outer surface is in contact with the cover body, the inner surface in the vertical direction is in contact with the rear plate of the outer box, and the heat dissipation fan is driven. The refrigerator is characterized in that the air flow sucked from the bottom of the main body is traversed from the inside to the outside of the lower portion of the condenser, and from above to the inside from the outside to the outside of the main body. 平板状の凝縮器を上部が外方に傾斜するように背面ダクト内に立設し、上端外面を機械室背部のカバー体に当接させるとともに所定の下部位置の内面を外箱後板部に当接させ、さらに下方部においてはその外面とカバー体との間に空間を形成して配設することで、放熱ファンからの空気流が凝縮器の内外面を複数回横断するようにしたことを特徴とする請求項1または2記載の冷蔵庫。   A flat plate-like condenser is erected in the rear duct so that the upper part is inclined outward, the upper outer surface is brought into contact with the cover body at the back of the machine room, and the inner surface at a predetermined lower position is used as the rear plate of the outer box. The air flow from the heat radiating fan crosses the inner and outer surfaces of the condenser a plurality of times by placing them in contact with each other and forming a space between the outer surface and the cover body in the lower part. The refrigerator according to claim 1 or 2. 平板状の凝縮器を上下に略く字状に折曲、あるいは円弧状に曲成し、上下端の外面をカバー体に、上下間の所定の内面を外箱後板部に当接させることで、放熱ファンからの送風が凝縮器の内外面を複数回横断するようにしたことを特徴とする請求項1または2記載の冷蔵庫。   A flat condenser is bent up and down in a substantially square shape or bent into an arc, and the upper and lower outer surfaces are brought into contact with the cover body, and the predetermined inner surface between the upper and lower sides is brought into contact with the rear plate of the outer box. The refrigerator according to claim 1 or 2, wherein the air blown from the heat radiating fan traverses the inner and outer surfaces of the condenser a plurality of times. 凝縮器が蛇行状冷媒パイプの両面にワイヤを溶着したワイヤコンデンサで形成されていることを特徴とする請求項1乃至4のいずれかに記載の冷蔵庫。   The refrigerator according to any one of claims 1 to 4, wherein the condenser is formed of a wire condenser in which wires are welded to both surfaces of a meandering refrigerant pipe. 放熱ファンから凝縮器への送風を、斜め上方に向かって吹き出すように設置したことを特徴とする請求項1乃至4のいずれかに記載の冷蔵庫。
The refrigerator according to any one of claims 1 to 4, wherein the refrigeration fan is installed so as to blow air from the heat dissipating fan obliquely upward.
JP2005171717A 2005-06-10 2005-06-10 Refrigerator Pending JP2006343080A (en)

Priority Applications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018066545A (en) * 2016-10-21 2018-04-26 アクア株式会社 refrigerator
CN108131887A (en) * 2018-01-31 2018-06-08 合肥美菱股份有限公司 A kind of radiator structure for built-in refrigerator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018066545A (en) * 2016-10-21 2018-04-26 アクア株式会社 refrigerator
CN108131887A (en) * 2018-01-31 2018-06-08 合肥美菱股份有限公司 A kind of radiator structure for built-in refrigerator

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