JP2007057193A - Refrigerator - Google Patents

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Publication number
JP2007057193A
JP2007057193A JP2005245631A JP2005245631A JP2007057193A JP 2007057193 A JP2007057193 A JP 2007057193A JP 2005245631 A JP2005245631 A JP 2005245631A JP 2005245631 A JP2005245631 A JP 2005245631A JP 2007057193 A JP2007057193 A JP 2007057193A
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compressor
refrigerator
compartment
heat
machine room
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Nobuo Kamaike
信雄 蒲池
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Priority to JP2005245631A priority Critical patent/JP2007057193A/en
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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
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2323/00General constructional features not provided for in other groups of this subclass
    • F25D2323/002Details for cooling refrigerating machinery
    • F25D2323/0028Details for cooling refrigerating machinery characterised by the fans
    • F25D2323/00281Two or more fans

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  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To suppress protrusion of an uppermost shelf far side, and to increase internal volume and depth of a lowermost shelf by mounting a compressor in an upper side, and to improve a service life of the compressor. <P>SOLUTION: In the refrigerator, the compressor 52 is mounted in a top face rear of a storage chamber of an uppermost shelf being a wasteful space unreachable even by stretching, and an efficient and rational heat exhaust air duct of a machine chamber 51 is composed for the purpose of lowering temperatures of a sliding part and a resin component 56 in an interior of the compressor 52 to improve service life of the compressor, and reducing electric energy consumption by reduction of a penetration heating value from the machine chamber 51 into a refrigerator interior, by providing a heat dissipation fan 53 such that air is blown onto the compressor 52 to carry out heat dissipation. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、圧縮機を天面後方に配設した冷蔵庫に関するものである。   The present invention relates to a refrigerator having a compressor disposed 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、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 are required to be further energy-saving from the viewpoint of protecting the global environment, and to be improved in usability and storage.

従来のこの種の冷蔵庫は、最下部に配設された貯蔵室の庫外側後方領域に機械室を形成し、この機械室内に冷凍サイクルの圧縮機を収容するものが一般的であるが、このような構成であると、機械室に最下部の貯蔵室の収納スペースが侵害されて収納容積が減少し、また収納スペースの空間形状も機械室の突出部を除いた複雑な形状となって収納性がよくないものとなっていた。   A conventional refrigerator of this type is generally configured such that a machine room is formed in the rear rear region of the storage room disposed at the lowermost part, and a compressor for a refrigeration cycle is accommodated in the machine room. In such a configuration, the storage space of the lowermost storage chamber is invaded in the machine room and the storage volume is reduced, and the space shape of the storage space is also stored in a complicated shape excluding the protruding part of the machine room. It was not good.

このような従来からの収納性に関わる問題点を解消する目的のために、特許文献1に参照するように、断熱箱体の貯蔵室内最上部の後背部が下がるように窪ませた凹部を設け、その凹部に冷凍サイクルの圧縮機などの高圧側の構成部品を収納するという冷蔵庫が提案されている。   For the purpose of solving the problems related to the conventional storage properties, as described in Patent Document 1, a recessed portion is provided so that the back of the uppermost storage chamber of the heat insulation box is lowered. A refrigerator in which a high-pressure component such as a compressor of a refrigeration cycle is housed in the recess has been proposed.

図9、図10は特許文献1に記載された従来の冷蔵庫の概略断面図及び概略斜視図を示すものである。   9 and 10 show a schematic cross-sectional view and a schematic perspective view of a conventional refrigerator described in Patent Document 1. FIG.

図9、図10に示すように、断熱箱体1は上から順に、冷蔵室2、冷凍室3、野菜室4を有し、冷蔵室2の前面開口には、冷蔵室回転扉5を設けている。また、断熱箱体1の中央から下方部に位置する冷凍室3と野菜室4は収納性と使い勝手を考慮して、簡易に取り出しが行える引出し式の冷凍室引出し扉6と野菜室引出し扉7を設けてある。冷蔵室2の庫内には複数の収納棚8が設けられており、冷凍室3と野菜室4には上面開口形状の収納容器9a、9bが取り付けてある。この収納容器9a、9bは前後方向のレール(図示せず)に、ローラ前後方向へ移動可能に支持されている。   As shown in FIGS. 9 and 10, the heat insulating box 1 has a refrigerator compartment 2, a freezer compartment 3, and a vegetable compartment 4 in order from the top, and a refrigerator compartment rotary door 5 is provided at the front opening of the refrigerator compartment 2. ing. In addition, the freezer compartment 3 and the vegetable compartment 4 located in the lower part from the center of the heat insulating box 1 are provided with a drawer type freezer compartment drawer door 6 and a vegetable compartment drawer door 7 that can be easily taken out in consideration of storability and convenience. Is provided. A plurality of storage shelves 8 are provided in the refrigerator compartment 2, and storage containers 9 a and 9 b having an open top shape are attached to the freezer compartment 3 and the vegetable compartment 4. The storage containers 9a and 9b are supported on a rail (not shown) in the front-rear direction so as to be movable in the front-rear direction of the roller.

断熱箱体に設けた凹部10は、外箱上面11と外箱背面12に渡る天面後背部を冷蔵室2の最上部の後背部が下がるように窪ませた箇所である。凹部10はその左右が断熱箱体1の左右壁にて塞がれ上方及び背方に開放しており、この凹部10の開放部は、上板13部とこれにほぼ直角な背板14とからなる凹部カバー15にて覆われている。また、凹部カバー15はビスなどで断熱箱体1に取り外し可能に固定されている。   The recessed part 10 provided in the heat insulation box is a place where the top rear part over the outer box upper surface 11 and the outer box rear surface 12 is recessed so that the uppermost rear part of the refrigerator compartment 2 is lowered. The left and right sides of the recess 10 are closed by the left and right walls of the heat insulating box 1 and open upward and to the back. The open portion of the recess 10 includes an upper plate 13 and a back plate 14 substantially perpendicular to the upper plate 13. It is covered with the recessed part cover 15 which consists of. The recess cover 15 is detachably fixed to the heat insulating box 1 with screws or the like.

冷凍サイクルの構成機器である圧縮機16と凝縮器17は機械室ファン18とともに凹部10内に収まるよう配置され、上板13と背板14で構成された凹部カバー15にて覆われている。上板13及び背板14には通風孔19が設けられており、上板13から吸い込まれた空気は凝縮器17と熱交換した後、背板14より排出される。   The compressor 16 and the condenser 17, which are components of the refrigeration cycle, are arranged so as to be accommodated in the recess 10 together with the machine room fan 18, and are covered with a recess cover 15 including an upper plate 13 and a back plate 14. The upper plate 13 and the back plate 14 are provided with ventilation holes 19, and the air sucked from the upper plate 13 is exhausted from the back plate 14 after exchanging heat with the condenser 17.

また冷凍サイクルの構成機器である蒸発器20は断熱箱体の1の中段となる冷凍室3の後背部に冷却ファン21とともに配設されており、最下部の貯蔵室である野菜室4は奥行き深く構成してある。   The evaporator 20 which is a component of the refrigeration cycle is disposed with a cooling fan 21 at the back of the freezer compartment 3 which is the middle stage of the heat insulation box 1, and the vegetable compartment 4 which is the lowermost storage room has a depth. Deeply structured.

これにより、断熱箱体1の背面下部に圧縮機16や凝縮器17を収納する冷蔵庫と比較して、最下部の貯蔵室である野菜室4の内容積を大きく、深く構成でき、貯蔵室の空間形状も圧縮機16などの無効スペースによる複雑な形状とならず収納性を高めることができるとともに、断熱箱体1の凹部10に収納した圧縮機16や凝縮器17を機械室ファン18により放熱し、冷凍サイクルの効率化を図ることができるものである。
特開2001−99552号公報
Thereby, compared with the refrigerator which accommodates the compressor 16 and the condenser 17 in the back lower part of the heat insulation box 1, the internal volume of the vegetable compartment 4 which is the lowest storage compartment can be comprised deeply, and it can comprise. The space shape does not become a complicated shape due to the ineffective space such as the compressor 16, and the storage property can be improved, and the compressor 16 and the condenser 17 stored in the recess 10 of the heat insulating box 1 are radiated by the machine room fan 18. In addition, the efficiency of the refrigeration cycle can be improved.
JP 2001-99552 A

しかしながら、上記従来の構成では、機械室ファン18で凝縮器17を冷却し、凹部10内に収納されている圧縮機16で放熱された空気を外へ排熱することで、ある程度の温度低減をすることはできるが、依然として圧縮機16に対する機械室ファン18の配置構成に工夫がされていないため、すなわち機械室ファン18は凝縮器17を重点的に放熱するように配置されており、圧縮機16を放熱するための空気の循環量が少ない。また、機械室ファン18の吸込区画と吐出区画とがシールされていないため、圧縮機16及び凝縮器17で放熱された空気を機械室ファン18が再び吸込み、圧縮機16及び凝縮器17の放熱を効率良く行うことができず温度上昇に繋がることになる。   However, in the above-described conventional configuration, the condenser 17 is cooled by the machine room fan 18, and the heat radiated by the compressor 16 accommodated in the recess 10 is exhausted to the outside, thereby reducing the temperature to some extent. However, since the arrangement of the machine room fan 18 with respect to the compressor 16 has not been devised, that is, the machine room fan 18 is arranged so as to radiate heat mainly from the condenser 17. The amount of air circulation for radiating 16 is small. Further, since the suction section and the discharge section of the machine room fan 18 are not sealed, the machine room fan 18 again sucks the air radiated by the compressor 16 and the condenser 17, and the heat radiated from the compressor 16 and the condenser 17. Cannot be performed efficiently, leading to a temperature rise.

このため、圧縮機16は高温状態での運転がなされ、冷媒を圧縮するピストンなどの摺動部や摺動部を潤滑するための冷凍機油の温度上昇が引き金による摺動部の異常摩耗を引き起こし、圧縮機16の寿命低下を促進するという課題を有していた。また、凝縮器17で高圧冷媒が効率良く放熱できず、冷却能力の不足による冷蔵庫内の鈍冷といった課題を有するものであった。   For this reason, the compressor 16 is operated at a high temperature, and a sliding part such as a piston for compressing the refrigerant and a rise in the temperature of the refrigerating machine oil for lubricating the sliding part cause abnormal wear of the sliding part due to the trigger. In addition, the compressor 16 has a problem of promoting a reduction in service life. Further, the high-pressure refrigerant cannot efficiently dissipate heat in the condenser 17, and there is a problem of slow cooling in the refrigerator due to insufficient cooling capacity.

また、凹部カバー15の上板13に通風孔19を設けているので、その付近に載置物を置かれると通風孔19が閉塞するとともに、特に現在の住宅事情から冷蔵庫の天面は収納スペースとして使用されることが多く、上板13が高温になることによる載置物が変色したりするという課題を有していた。   Further, since the ventilation hole 19 is provided in the upper plate 13 of the concave cover 15, the ventilation hole 19 is closed when an object is placed in the vicinity thereof. In many cases, the mounted object is discolored due to the upper plate 13 becoming hot.

また、凹部10に圧縮機16、凝縮器17を設置するため凹部10の必要スペースが大きくなるのに加えて、凹部10の温度が高くなり冷蔵室2への熱伝導を抑制するために断熱箱体1の壁厚を増加することで、冷蔵室2の上段周辺の収納性が悪くなり、さらに使用者にとって扉を開いたときの圧迫感を与えるとともにデザイン性も悪くなるものであった。   Further, since the compressor 16 and the condenser 17 are installed in the recess 10, the space required for the recess 10 is increased, and in addition, the temperature of the recess 10 is increased so that heat conduction to the refrigerator compartment 2 is suppressed. Increasing the wall thickness of the body 1 deteriorates the storability of the upper periphery of the refrigerator compartment 2, and gives the user a feeling of pressure when the door is opened and also deteriorates the design.

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配設するもので、圧縮機に風が当たるように機械室ファンを設けて放熱させることにより、圧縮機内部の摺動部及びカバー上板の温度を効率良く低下し圧縮機の寿命向上を図るとともに、冷蔵庫外郭の温度低減による安全性を確保した冷蔵庫を提供することを目的とする。   The present invention solves the above-mentioned conventional problems, and arranges a compressor and a condenser behind the top surface of the uppermost storage chamber, which is an invalid space that cannot be reached even if it is stretched back. By installing a machine room fan to dissipate heat, the temperature of the sliding part inside the compressor and the cover top plate is efficiently reduced, improving the life of the compressor and safety by reducing the temperature of the refrigerator casing It aims at providing the refrigerator which secured.

上記従来の課題を解決するために、本発明の冷蔵庫は、断熱箱体と、前記断熱箱体に備えられた圧縮機と凝縮器と蒸発器とを順に備えて一連の冷媒流路を形成した冷凍サイクルと、前記圧縮機を冷却するファンを備えた冷蔵庫において、前記断熱箱体の天面後方部に一段下がった凹部を設け機械室とし、少なくとも前記圧縮機と前記ファン及び前記凝縮器は凹部区画内に配設するものである。   In order to solve the above-described conventional problems, the refrigerator of the present invention includes a heat insulating box, a compressor, a condenser, and an evaporator provided in the heat insulating box in order to form a series of refrigerant flow paths. In a refrigerator having a refrigeration cycle and a fan for cooling the compressor, a recessed portion lowered by one step is provided at a rear portion of the top surface of the heat insulation box, and at least the compressor, the fan, and the condenser are recessed. It is arranged in the compartment.

これにより、前記ファンの作動により発生する強制対流の空気が前記圧縮機の周囲に流れ、前記圧縮機は外郭より冷却されるので、効率良くかつ合理的な風路を構成することができる。   Thereby, forced convection air generated by the operation of the fan flows around the compressor, and the compressor is cooled from the outer shell, so that an efficient and rational air path can be configured.

本発明の冷蔵庫は、圧縮機の温度上昇を低減し摺動部の摩耗、冷凍機油の劣化を抑制し圧縮機の寿命向上を図ることができる。   The refrigerator of the present invention can improve the life of the compressor by reducing the temperature rise of the compressor and suppressing the wear of the sliding part and the deterioration of the refrigeration oil.

また、圧縮機の温度低減による冷凍能力の成績係数が向上するとともに、機械室の温度低減により冷蔵庫内への熱の移動を抑えることができるため消費電力量をも低減することができる。   Further, the coefficient of performance of the refrigerating capacity due to the temperature reduction of the compressor is improved, and the heat transfer into the refrigerator can be suppressed by the temperature reduction of the machine room, so that the power consumption can also be reduced.

また、無効スペースを生み出す機能部品の収納位置の工夫により、手の届く位置の食品収納スペースを拡大することができるので、お客様に使い勝手のよい冷蔵庫を提供することができる。   In addition, by devising the storage position of the functional parts that create the ineffective space, the food storage space at a location that can be reached can be expanded, so that it is possible to provide a user-friendly refrigerator.

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部を庫内側に凹ませて形成させた機械室を設け、少なくとも圧縮機、ファン、凝縮器を収納し、その位置を前記機械室の左右方向の端から前記圧縮機、前記ファン、前記凝縮器と配置することにより、前記ファンの作動により発生する強制対流の空気は、前記圧縮機の周囲に流れ、前記圧縮機の圧縮要素であるピストン等の摺動部や冷凍機油の温度を下げることができ、摺動部の異常摩耗や冷凍機油の熱分解などを抑制し、前記圧縮機の寿命向上を図ることができ、また、冷凍サイクルの高圧機器である前記凝縮器は、前記ファンの強制通風効果により強制冷却用にも活用でき高圧機器をユニット化してよりコンパクトで合理的な機械室組立て品を構成できる。   The invention according to claim 1 is provided with a heat insulation box and a machine room formed by denting the rear portion of the top surface of the heat insulation box inside the container, and at least a compressor, a fan, and a condenser are accommodated, By arranging the position from the left and right ends of the machine room with the compressor, the fan, and the condenser, forced convection air generated by the operation of the fan flows around the compressor, To reduce the temperature of sliding parts such as pistons, which are compression elements of compressors, and refrigeration oil, to suppress abnormal wear of sliding parts and thermal decomposition of refrigeration oil, and to improve the life of the compressor The condenser, which is a high-pressure device for the refrigeration cycle, can also be used for forced cooling due to the forced ventilation effect of the fan, and the high-pressure device can be unitized to form a more compact and rational machine room assembly. .

また、前記圧縮機を最下段の貯蔵室の後方からなくし、最上段の貯蔵室の後背部に前記圧縮機を収納することができるので、背伸びしても届かない無効スペースに前記圧縮機等の機能部品を収容するとともに、下段の貯蔵室の内容積と奥行きを拡大することができる。   Further, the compressor is removed from the rear of the lowermost storage chamber, and the compressor can be stored in the back of the uppermost storage chamber. While accommodating functional parts, the internal volume and depth of the lower storage chamber can be expanded.

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、前記ファンを境にし、前記圧縮機と前記凝縮器との間に配置し、前記ファンにより前記機械室を左右に2分割し、前記ファンを挟んで前記圧縮機を収容する第1の区画と前記凝縮器を収容する第2の区画とを区画形成したものであり、前記第1の区画を吐出区画とし、前記第2の区画を吸込区画とし、前記ファンを中間にして強制通風の上流側すなわち吸込区画に凝縮器、下流側すなわち吐出区画に圧縮機を区画配置し、圧縮機の高熱が凝縮器の放熱を妨げることを回避しながら圧縮機、凝縮器ともに強制冷却効果を享受することができる。   According to a second aspect of the present invention, in the first aspect of the present invention, the fan is used as a boundary, and is disposed between the compressor and the condenser. The first compartment that houses the compressor and the second compartment that houses the condenser are formed with the fan interposed therebetween, and the first compartment serves as a discharge compartment, and the second compartment The section is a suction section, the condenser is arranged upstream of the forced ventilation, i.e., the suction section, and the compressor is arranged downstream, i.e., the discharge section, and the high heat of the compressor hinders the heat dissipation of the condenser. While avoiding, both the compressor and the condenser can enjoy the forced cooling effect.

請求項3に記載の発明は、請求項1または2に記載の発明において、前記第1の区画の容積を前記第2の区画の容積よりも大きくするものであり、前記吸込区画にある前記ファンの吸入側の空気抵抗が小さくできるので、前記ファンの作動により発生する風量を大きくすることができ、前記圧縮機の温度をさらに下げることができる。   According to a third aspect of the present invention, in the first or second aspect of the present invention, the volume of the first compartment is larger than the volume of the second compartment, and the fan located in the suction compartment Since the air resistance on the suction side can be reduced, the amount of air generated by the operation of the fan can be increased, and the temperature of the compressor can be further lowered.

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、前記凝縮器はその一部を圧縮機の吐出側と直接接続される予冷配管で構成され、このため大きなスペースがなくてもファンの強制通風作用を利用して相当の顕熱分の放熱促進が可能であり、この予冷配管に続く凝縮器配管が断熱箱体の外箱内面に熱伝導的に配設されるものである場合などには、これらの配管温度を低減でき外箱の表面温度を低下させて使用者等が触れることによる不快感を軽減することができる。   According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the condenser is configured by a precooling pipe, a part of which is directly connected to the discharge side of the compressor. Therefore, even if there is no large space, it is possible to accelerate the heat dissipation of a considerable amount of sensible heat using the forced ventilation of the fan, and the condenser piping following this precooling piping is thermally conductive to the inner surface of the outer box of the heat insulation box. In the case of being disposed, the temperature of these pipes can be reduced, and the surface temperature of the outer box can be lowered to reduce the discomfort caused by the user touching.

請求項5に記載の発明は、請求項1から4のいずれか一項に記載の発明において、前記機械室の空気の流れを前記第2の区画の吸込区画から前記ファンへ、そして前記第1の区画の吐出区画へと向かわせる風路構成としたことにより、前記吸込区画では低い温度の外気が吸込口(図示せず)より導入され、収容する前記凝縮器の一部を前記圧縮機の吐出側を直接接続される予冷配管を冷却し放熱し、次に境である前記ファンの吸込み側から吐出側へ流れ出た空気は前記吐出区画へ移り前記圧縮機外郭表面に直接当り発熱した圧縮機を放熱冷却する。熱交換し温められた空気は最後に吐出口(図示せず)から排出する。これにより空気の流れは、冷凍システムの冷媒の流れが前記圧縮機から吐出側の予冷配管である前記凝縮器に向かうのに対し対向流となり、効率の良い放熱効果が得られる。   According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the flow of air in the machine room is changed from the suction section of the second section to the fan, and to the first section. Since the air passage configuration is directed to the discharge section of the other section, outside air at a low temperature is introduced from the suction port (not shown) in the suction section, and a part of the condenser to be accommodated is stored in the compressor. A compressor that cools and dissipates heat from a precooling pipe that is directly connected to the discharge side, and then air that flows from the suction side of the fan, which is the boundary, to the discharge side moves to the discharge section and directly hits the outer surface of the compressor to generate heat. Cool the heat dissipation. The air heated by heat exchange is finally discharged from a discharge port (not shown). As a result, the flow of air becomes an opposite flow while the flow of the refrigerant in the refrigeration system goes from the compressor to the condenser, which is the precooling pipe on the discharge side, and an efficient heat dissipation effect is obtained.

請求項6に記載の発明は、請求項1から5のいずれか一項に記載の発明において、前記ドライヤを前記圧縮機の風上へ配置することで、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、放熱され液化した冷媒を再加熱されて気化し、冷凍サイクルに不具合をきたす恐れがないため、安定した液冷媒を供給することが可能となり、冷却システムの信頼性を向上させることができる。   According to a sixth aspect of the present invention, in the invention according to any one of the first to fifth aspects, the radiated high-pressure refrigerant is always in contact with the outside air by disposing the dryer on the windward side of the compressor. Since the refrigerant that has been radiated and liquefied can be reheated and vaporized, there is no risk of causing a malfunction in the refrigeration cycle, it is possible to supply a stable liquid refrigerant and improve the reliability of the cooling system Can do.

請求項7に記載の発明は、請求項1から6のいずれか一項に記載の発明において、前記ドライヤを前記ファンとともに係止することで、部品点数の削減と工数の削減ができ、安価な冷蔵庫を提供できる。   The invention according to claim 7 is the invention according to any one of claims 1 to 6, wherein the dryer is locked together with the fan, whereby the number of parts and man-hours can be reduced, and the cost is low. A refrigerator can be provided.

以下、本発明による冷蔵庫の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によってこの発明が限定されるものではない。   Hereinafter, embodiments of a refrigerator according to the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(実施の形態1)
図1は、本発明の実施の形態1における冷蔵庫の縦断面図であり、図2は同実施の形態における冷蔵庫の機械室概略図であり、図3は同実施の形態における冷蔵庫の機械室の斜視図であり、図4は同実施の形態における冷蔵庫の機械室の分解図であり、図5は同実施の形態における冷蔵庫の圧縮機の縦断面図を示すものである。
(Embodiment 1)
FIG. 1 is a longitudinal sectional view of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a schematic view of a machine room of the refrigerator according to the same embodiment, and FIG. 3 is a view of a machine room of the refrigerator according to the same embodiment. FIG. 4 is an exploded view of the machine room of the refrigerator according to the embodiment, and FIG. 5 is a longitudinal sectional view of the compressor of the refrigerator according to the embodiment.

図1から図4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。   In FIG. 1 to FIG. 4, the refrigerator main body 30 includes a heat insulating box 31 divided into a plurality of heat insulating compartments and doors provided in the respective heat insulating compartments. 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、野菜室42と冷凍室43の構成となっている。各断熱区画の前面開口にはそれぞれ断熱扉が図示しないガスケットを介して設けられている。上から冷蔵室扉40a、製氷室扉41a、野菜室扉42a、冷凍室扉43aである。なお、製氷室41は断熱箱体31の全幅で構成せず、隣室を図示しない仕切り壁で区画した貯蔵室を形成しても構わない。   The heat insulation box 31 forms a plurality of storage rooms, and has a refrigeration room 40, an ice making room 41, a vegetable room 42, and a freezing room 43 from the top. A heat insulating door is provided through a gasket (not shown) at the front opening of each heat insulating section. From the top, the refrigerator compartment door 40a, the ice making compartment door 41a, the vegetable compartment door 42a, and the freezer compartment door 43a. Note that the ice making chamber 41 may not be configured with the full width of the heat insulating box 31 but may form a storage chamber in which the adjacent chamber is partitioned by a partition wall (not shown).

断熱箱体31は、天面後方部を一段低い段差状に窪ませた凹部50を形成し、断熱箱体31の上方及び背方を開口している。凹部50は機械室51として圧縮機52と放熱ファン53と凝縮器の一部を圧縮機52の吐出側と直接接続される予冷の配管となる予冷凝縮器54を収納し、その位置を機械室51の左右方向の端から圧縮機52、放熱ファン53、予冷凝縮器54と配置している。放熱ファン53を挟んで圧縮機52を収容する第1の区画91aを吐出区画91bとし、予冷凝縮器54を収容する第2の区画92aを吸込区画92bとして区画形成している。放熱ファン53は、圧縮機52と予冷凝縮器54との中間位置即ち機械室51の幅方向の中間位置に配置されており、上流側が吸込区画92b、下流側が吐出区画91bとし圧縮機52に風を当てるような流れで循環するよう構成されている。また、予冷凝縮器54に続く凝縮器配管が断熱箱体31の外箱33内面に熱伝導的に配設されている。   The heat insulation box 31 forms a recess 50 in which the rear part of the top surface is recessed in a stepped shape, and opens above and behind the heat insulation box 31. The concave portion 50 accommodates a precooling condenser 54 serving as a precooling pipe in which a compressor 52, a heat radiating fan 53, and a part of the condenser are directly connected to the discharge side of the compressor 52 as a machine chamber 51. A compressor 52, a heat radiating fan 53, and a precooling condenser 54 are arranged from the left and right ends of 51. A first section 91a that accommodates the compressor 52 with the heat radiating fan 53 interposed therebetween is defined as a discharge section 91b, and a second section 92a that accommodates the precooling condenser 54 is defined as a suction section 92b. The heat radiating fan 53 is disposed at an intermediate position between the compressor 52 and the precooling condenser 54, that is, at an intermediate position in the width direction of the machine chamber 51. The upstream side is a suction section 92b and the downstream side is a discharge section 91b. It is configured to circulate in such a flow as to hit. A condenser pipe following the precooling condenser 54 is disposed on the inner surface of the outer box 33 of the heat insulating box 31 in a heat conductive manner.

次に、凹部50内の構成について説明する。   Next, the configuration in the recess 50 will be described.

凹部50は断熱箱体31の外郭である外箱33の天面後方を切り欠いて、その切り欠いた箇所に、前壁と左右両側壁と圧縮機52や放熱ファン53を載置するための底面とを一体で成形した樹脂部品56を断熱箱体31の後方からはめ込むように形成されている。なお、切り欠いて形成された凹部50は強度が弱くなるため、周辺には図示しない補強手段を設けることが一般的である。補強手段としては、特に凹部50の底面と側面の合わせ箇所に傾斜部57を設けて底面と側面を繋いだり、側面と外箱33との間の左右両側に発泡断熱材34を注入すると効果は大きい。   The recess 50 is formed by cutting out the rear side of the top surface of the outer box 33 that is the outer shell of the heat insulating box 31, and the front wall, the left and right side walls, the compressor 52 and the heat radiating fan 53 are placed in the cutout portion. The resin part 56 formed integrally with the bottom surface is formed so as to be fitted from the rear side of the heat insulating box 31. In addition, since the intensity | strength becomes weak for the recessed part 50 formed by notching, it is common to provide the reinforcement means which is not shown in the periphery. As the reinforcing means, in particular, if the inclined portion 57 is provided at the joint portion of the bottom surface and the side surface of the recess 50 to connect the bottom surface and the side surface, or the foam heat insulating material 34 is injected into both the left and right sides between the side surface and the outer box 33, the effect is obtained. large.

また、凹部50には機械室カバー62が設けられ、内部の圧縮機52や放熱ファン53予冷凝縮器54を覆うように構成される。機械室カバー62には機械室51内外に空気を行き来させるための、詳細は後述する開口部63、64が設けられている。   The recess 50 is provided with a machine room cover 62 so as to cover the internal compressor 52 and the radiating fan 53 precooled condenser 54. The machine room cover 62 is provided with openings 63 and 64, which will be described later in detail, for allowing air to flow in and out of the machine room 51.

また、放熱ファン53はファンカバー90の中にポリウレタンフォームなどの柔らかい緩衝部材(図示せず)を介して挿入固定され、このファンカバー90は、樹脂部品56が圧縮機52の設置底面に略垂直になるよう配置構成される。すなわち、放熱ファン53を機械室51の下方側へ設置し、圧縮機52の中心位置よりも放熱ファン53の中心位置を低く位置させている。また、ファンカバー90の外周にはポリウレタンフォームなどの柔らかいシール部材93を介して、ファンカバー90と樹脂部品56及び機械室カバー62とを密着させるよう構成している。   The heat radiating fan 53 is inserted and fixed in the fan cover 90 via a soft cushioning member (not shown) such as polyurethane foam. The fan cover 90 has the resin component 56 substantially perpendicular to the installation bottom surface of the compressor 52. Arranged to be That is, the heat radiating fan 53 is installed below the machine room 51, and the center position of the heat radiating fan 53 is positioned lower than the center position of the compressor 52. Further, the fan cover 90, the resin component 56, and the machine room cover 62 are brought into close contact with the outer periphery of the fan cover 90 via a soft seal member 93 such as polyurethane foam.

このような構成によって、放熱ファン53の吐出側と吸込側を確実にシールして区画し、吐出側の区画である吐出区画91bと吸込側の区画である吸込区画92bを機械室51に構成する。ここでは圧縮機52が吐出区画91bに位置することになる。   With such a configuration, the discharge side and the suction side of the heat radiating fan 53 are reliably sealed and partitioned, and the discharge section 91b that is the discharge side section and the suction section 92b that is the suction side section are configured in the machine chamber 51. . Here, the compressor 52 is located in the discharge section 91b.

また、機械室カバー62に設けられた開口部63は、機械室51内の吸込区画92bに位置し、冷蔵庫本体30周辺の空気を機械室51の中に吸い込むために利用される。一方、機械室51内の吐出区画91bに位置する開口部64は、圧縮機52で放熱された空気を機械室51の外へ排熱するために利用される。   The opening 63 provided in the machine room cover 62 is located in the suction section 92 b in the machine room 51, and is used to suck the air around the refrigerator body 30 into the machine room 51. On the other hand, the opening 64 located in the discharge section 91 b in the machine room 51 is used for exhausting the heat radiated from the compressor 52 to the outside of the machine room 51.

断熱箱体31の底面部には、その前方に冷凍サイクルの凝縮器100を、後方には蒸発器101で除霜された水を貯留するための蒸発皿102を配置構成している。両部品とも冷蔵庫本体30の内容積向上のため、高さを抑え小型で高効率なものを採用している。凝縮器100は代表的なものとしてスパラルフィンチューブ方式があり、外箱33の内側に熱伝達よく貼り付けられた配管や、各室断熱扉体間の仕切りに配設して防滴防止を行うための配管を組み合わせてもよい。なお、断熱箱体31の底面部の空気を循環させるための図示しないファンを設置することで、凝縮器100の能力、結露の防止はより効果がでる。   On the bottom surface of the heat insulating box 31, a condenser 100 of the refrigeration cycle is arranged in front of it, and an evaporating dish 102 for storing water defrosted by the evaporator 101 is arranged in the rear. In order to improve the internal volume of the refrigerator main body 30, both parts are small and highly efficient. A typical condenser 100 is a spall fin tube type, which is provided in a pipe affixed to the inside of the outer box 33 with good heat transfer or a partition between each heat insulating door body to prevent drip-proofing. You may combine piping for. In addition, the capability of the condenser 100 and prevention of dew condensation are more effective by installing a fan (not shown) for circulating the air at the bottom of the heat insulating box 31.

次に圧縮機52の内部構成について説明する。   Next, the internal configuration of the compressor 52 will be described.

図5のように圧縮機52は、一般的に圧延鋼板を深絞り成形により形成してなるすり鉢状の下容器70と逆すり鉢状の上容器71を係合し、係合部分を全周溶接接合して密閉容器72が形成され、密閉容器72の内部には、冷媒73と底部に冷凍機油74が貯留されている。密閉容器72の下側には、脚75が固着されており、脚75を係止されたゴムなどの弾性部品76を介して、冷蔵庫本体30の凹部50に設けたピンに弾性部材76をはめ込むことで位置を固定している。電動要素77と圧縮要素78は、ともに密閉容器72に収納され、圧縮要素78は略円筒形の冷媒を圧縮し冷凍サイクル内に吐出する圧縮室82を有するとともに、シャフト83を軸に回転駆動する電動要素77の上方に形成されている。すなわち、圧縮室82は圧縮機52の中心よりも上方に位置することになる。   As shown in FIG. 5, the compressor 52 generally engages a mortar-shaped lower container 70 and a reverse mortar-shaped upper container 71, which are formed by deep-drawing a rolled steel plate, and welds the engagement portion around the circumference. A sealed container 72 is formed by joining, and inside the sealed container 72 is stored a refrigerant 73 and a refrigerating machine oil 74 at the bottom. A leg 75 is fixed to the lower side of the sealed container 72, and the elastic member 76 is fitted into a pin provided in the concave portion 50 of the refrigerator main body 30 through an elastic part 76 such as rubber with which the leg 75 is locked. The position is fixed. Both the electric element 77 and the compression element 78 are accommodated in a sealed container 72. The compression element 78 has a compression chamber 82 for compressing a substantially cylindrical refrigerant and discharging it into the refrigeration cycle, and is driven to rotate about a shaft 83. It is formed above the electric element 77. That is, the compression chamber 82 is located above the center of the compressor 52.

次に、断熱箱体31の貯蔵室側の構成を説明する。   Next, the structure of the heat insulation box 31 on the storage chamber side 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105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106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107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 accommodating the compressor 52 is formed in the storage chamber so as to protrude upward, and a plurality of shelves 105 for arranging and storing food and the like are provided, and a plastic bottle or the like is provided inside the refrigerator compartment door 40a. A plurality of pockets 106 for storing beverages are provided. A storage case 107 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121を設けていて、出来た氷を貯留する貯氷容器122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 121 having an ice tray for generating ice, is configured to accommodate an ice storage container 122 for storing the produced ice, and to be pulled out by a rail (not shown) or the like. Yes.

野菜室42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、低温にする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110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 42 is generally set to 2 ° C. to 7 ° C., which is equal to or slightly higher than that of the refrigerated room 40, and the freshness of the leaf 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 110 that can organize and store foods such as vegetables, and can be pulled out by a rail (not shown) or the like.

冷凍室43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111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 43 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 111 that can organize and store foods, and is configured to be pulled out by a rail (not shown) or the like.

野菜室42と冷凍室43の背面に冷却室112が設けられ、冷却室112は断熱性を有する第一の仕切壁113で野菜室42及び冷凍室43を仕切っている。野菜室42と冷凍室43は断熱性を有する第二の仕切壁114で仕切られている。   A cooling chamber 112 is provided on the back of the vegetable compartment 42 and the freezing compartment 43, and the cooling compartment 112 partitions the vegetable compartment 42 and the freezing compartment 43 by a first partition wall 113 having heat insulating properties. The vegetable compartment 42 and the freezer compartment 43 are partitioned by a second partition wall 114 having heat insulation properties.

冷却室112には、庫内の空気を熱交換する縦長の蒸発器101と、各貯蔵室に冷気を送るための冷却ファン115と、冷却時に蒸発器101に付着する霜を除霜する除霜装置116と、除霜された水を受ける水受け部117が構成され、水受け部117から蒸発皿102に除霜水が排水される。   In the cooling chamber 112, a vertically long evaporator 101 for exchanging heat in the air in the cabinet, a cooling fan 115 for sending cold air to each storage chamber, and a defrost for defrosting frost adhering to the evaporator 101 during cooling. The apparatus 116 and the water receiving part 117 which receives defrosted water are comprised, and defrost water is drained from the water receiving part 117 to the evaporating dish 102.

次に、機械室51と冷蔵室40の構成について説明する。   Next, the structure of the machine room 51 and the refrigerator compartment 40 is demonstrated.

図6(a)は同実施の形態における冷蔵庫の上部を背面から見た図であり、図6(b)は同実施の形態における冷蔵庫の図6(a)のA−A線断面図を示すものである。冷蔵室40の上部背面に機械室51が構成されており冷蔵室40と断熱壁により仕切られている。機械室51は、前述の断熱壁と機械室カバー62により空間を構成し、放熱ファン53により吐出区画91bと吸込区画92bとに区分けされている。吐出区画91bの奥行は、圧縮機52とほぼ同じ大きさであり、吸込区画92bの奥行は、放熱ファン53とほぼ同じ大きさで構成されている。   Fig.6 (a) is the figure which looked at the upper part of the refrigerator in the same embodiment from the back, and FIG.6 (b) shows the sectional view on the AA line of FIG.6 (a) of the refrigerator in the same embodiment. Is. A machine room 51 is formed on the upper rear surface of the refrigerator compartment 40 and is partitioned from the refrigerator compartment 40 by a heat insulating wall. The machine room 51 forms a space by the above-described heat insulating wall and the machine room cover 62, and is divided into a discharge section 91b and a suction section 92b by a heat radiating fan 53. The depth of the discharge section 91 b is approximately the same size as the compressor 52, and the depth of the suction section 92 b is configured approximately the same size as the heat dissipation fan 53.

冷蔵室40の奥部の断熱壁の形状は、機械室51の吐出区画91bと吸込区画92bの奥行寸法の差の分だけ吸込区画92b側に窪みが形成される。前述の窪みに冷蔵室40内を冷却する冷風を上部へ導く冷蔵室風路126が配設されており、冷蔵室風路126の前面は冷蔵室化粧板125で覆われている。   As for the shape of the heat insulating wall at the back of the refrigerator compartment 40, a depression is formed on the suction section 92b side by the difference in depth between the discharge section 91b and the suction section 92b of the machine chamber 51. A refrigeration room air passage 126 that guides the cold air for cooling the inside of the refrigeration room 40 to the upper part is disposed in the above-described depression, and the front surface of the refrigeration room air passage 126 is covered with a refrigerator compartment decorative plate 125.

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

まず、圧縮機52を断熱箱体31の天面後方の凹部50に載置して最下方の冷凍室43の後方領域には配置せず、冷却室112を冷凍室43とその上方の野菜室42の背面に配置し、蒸発器101と冷却ファン115を概ね冷凍室43と野菜室42の高さ範囲内で設け、蒸発器101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112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42、冷凍室43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42、冷凍室43を引出し式の貯蔵室としているので、野菜室容器110、冷凍室容器111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 is placed in the recess 50 at the rear of the top surface of the heat insulating box 31 and is not disposed in the rear region of the lowermost freezer compartment 43, and the cooling chamber 112 is placed in the freezer compartment 43 and the vegetable compartment above it. 42, the evaporator 101 and the cooling fan 115 are provided within the height range of the freezer compartment 43 and the vegetable compartment 42, and the evaporator 101 is extended in the height direction to reduce the depth dimension. By reducing the thickness of the chamber 112 and reducing the ineffective space that does not contribute to the internal volume, the storage capacity of the vegetable chamber 42 and the freezing chamber 43 can be increased and the storage performance can be improved. 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 42 and the freezer compartment 43 are drawer-type storage rooms, food stored in the back of the vegetable compartment container 110 and the freezer compartment container 111 can be easily put in and out, and the usability can be improved.

ただし、断熱箱体31の天面後方の凹部50をコンパクトに形成し、最上方の冷蔵室40の庫内側への突出代を極力小さくしなければ、視覚的にも圧迫感や閉塞感を感じるものになってしまう。   However, if the recess 50 on the rear side of the top surface of the heat insulation box 31 is formed compactly and the protrusion margin to the inner side of the uppermost refrigerator compartment 40 is not made as small as possible, a feeling of pressure or a blockage is felt visually. It becomes a thing.

したがって、冷蔵庫本体30の底面に冷凍サイクルの凝縮器100を配置して、凹部50には圧縮機52を冷却する放熱ファン53のみを配置し放熱を促進することが必要となり、この場合、凹部50の容積及び排熱風路をコンパクトに形成し、冷蔵室40への庫内側への突出代を抑制することができる。   Therefore, it is necessary to dispose the condenser 100 of the refrigeration cycle on the bottom surface of the refrigerator body 30 and to dispose only the heat dissipating fan 53 for cooling the compressor 52 in the recess 50 to promote heat dissipation. The volume and the exhaust heat air passage can be formed compactly, and the protrusion allowance to the refrigerator inner side to the refrigerator compartment 40 can be suppressed.

しかしながら、その一方で圧縮機52を上部に位置させることで、例えばシステムキッチン枠の天板が冷蔵庫本体30の天面近傍に位置したり、冷蔵庫本体30の天面に物を乗せられることにより圧縮機52の放熱を阻害され、凹部50内に熱が滞留しやすくなることが考えられる。その場合、上述の従来例でも述べたように、たとえ放熱ファン53を設けたとしても、効率良く圧縮機52を放熱する機械室51の風路構成にしなければ温度低減の効果がほとんどない。   However, on the other hand, by placing the compressor 52 on the upper side, for example, the top plate of the system kitchen frame is positioned near the top surface of the refrigerator body 30 or the object is placed on the top surface of the refrigerator body 30 for compression. It is conceivable that the heat dissipation of the machine 52 is hindered and heat tends to stay in the recess 50. In that case, as described in the above-described conventional example, even if the heat dissipating fan 53 is provided, there is almost no effect of temperature reduction unless the air passage configuration of the machine room 51 that efficiently dissipates the compressor 52 is used.

本実施の形態によれば、圧縮機52の圧縮室82に潤滑材としての冷凍機油74が滞留する部分である圧縮機52の底面近傍に空気を循環させるための風路を形成するよう放熱ファン53を設けて、効率良くかつ合理的な機械室51の風路構成を作ることで圧縮機52の信頼性向上を図るものである。   According to the present embodiment, the heat dissipating fan forms an air passage for circulating air near the bottom surface of the compressor 52 where the refrigerating machine oil 74 as a lubricant stays in the compression chamber 82 of the compressor 52. 53 is provided to improve the reliability of the compressor 52 by creating an efficient and rational air passage configuration of the machine room 51.

そして、冷凍機油74は冷蔵庫本体30が非常に外気温度の高い、また周辺の壁及び天井との空間が極めて少ない、いわゆる高い負荷がかかった状態で圧縮機52を運転していても、上記したように放熱ファン53は凹部50の底面付近に配置構成され、圧縮機52の下方、特に底面と凹部50の底面との空間を主に風を循環させることで、冷凍機油74周辺の放熱を促進することで低い温度を維持できるため、冷凍機油74が加熱分解することなく潤滑材としての役目を果たすことが可能となり、圧縮室82の異常摩耗などを抑制するとともに、機械室51の底面付近の温度を低減できるので、最上段の貯蔵室である冷蔵室40への熱の侵入を抑制し、消費電力量を低減することができる。   The refrigerating machine oil 74 is described above even when the refrigerator main body 30 has a very high outside air temperature and the space between the surrounding wall and the ceiling is extremely small. As described above, the heat radiating fan 53 is arranged near the bottom surface of the concave portion 50 and promotes heat radiation around the refrigerating machine oil 74 by circulating air mainly below the compressor 52, particularly in the space between the bottom surface and the bottom surface of the concave portion 50. This makes it possible to maintain a low temperature, so that the refrigerating machine oil 74 can serve as a lubricant without being thermally decomposed, suppresses abnormal wear of the compression chamber 82, and the like, and near the bottom surface of the machine chamber 51. Since the temperature can be reduced, heat can be prevented from entering the refrigerator compartment 40 that is the uppermost storage room, and the amount of power consumption can be reduced.

次に、機械室51の風路構成に関しては、断熱箱体31の天面後方に設けた凹部50を覆うための機械室カバー62は、開口部63、64を設けて機械室51の内外を空気が行き来できるようになっていて、放熱ファン53の運転により、開口部63から吸込まれた外気は放熱ファン53に吸込まれて吸込区画92bの予冷凝縮器54に触れ放熱し、そのまま放熱ファン53の吸込側から吐出側へ出た空気は、圧縮機52の外郭表面を通って開口部64から機械室51の外へ排出される。放熱ファン53は、通常圧縮機52が運転しているときに運転されて放熱を促進することができる。   Next, regarding the air channel configuration of the machine room 51, the machine room cover 62 for covering the recess 50 provided at the rear of the top surface of the heat insulation box 31 is provided with openings 63 and 64 so that the inside and outside of the machine room 51 are covered. The air can come and go, and by the operation of the heat radiating fan 53, the outside air sucked from the opening 63 is sucked into the heat radiating fan 53 and touches the precooling condenser 54 in the suction section 92b to radiate heat. The air discharged from the suction side to the discharge side passes through the outer surface of the compressor 52 and is discharged from the opening 64 to the outside of the machine chamber 51. The heat radiating fan 53 can be operated when the compressor 52 is normally operated to promote heat dissipation.

このとき、予冷凝縮器54は圧縮機52の吐出配管側に接続され、外箱33の内面や冷蔵庫本体1の底面に配設される主凝縮器100に至るまでの凝縮器の一部となる凝縮配管であり、本実施の形態では圧縮機52からの振動伝達を抑制する目的も含めて配管をループ状の旋回させた形状をとり、この部で圧縮機52から吐出される高温の冷媒ガスの放熱を促進する。この予冷凝縮器54を放熱ファン53の強制対流路中に組み込むことにより圧縮機52の強制冷却に加え予冷凝縮器54も強制冷却されることになり、強制冷却式の高圧ユニットを組み込んだ機械室組み立て品をコンパクトで合理的に構成できる。   At this time, the precooling condenser 54 is connected to the discharge pipe side of the compressor 52 and becomes a part of the condenser leading to the main condenser 100 disposed on the inner surface of the outer box 33 and the bottom surface of the refrigerator body 1. This is a condensing pipe, and in this embodiment, the pipe has a looped shape including the purpose of suppressing vibration transmission from the compressor 52, and a high-temperature refrigerant gas discharged from the compressor 52 at this portion. Promotes heat dissipation. By incorporating the precooling condenser 54 in the forced air flow path of the heat radiating fan 53, the precooling condenser 54 is forcibly cooled in addition to the forced cooling of the compressor 52, and a machine room in which a forced cooling type high pressure unit is incorporated. The assembly can be made compact and rational.

また、大きなスペースがなくても放熱ファン53の強制通風作用を利用して予冷凝縮器54において相当の顕熱分の放熱促進が可能であり、この予冷凝縮器54に続く凝縮器配管が断熱箱体の外箱33の内面に熱伝導的に配設されるものである場合などには、これらの配管温度を効果的に低減でき外箱33の相当部分の表面温度を低下させて使用者等が触れることによる不快感を軽減することができる。   Further, even if there is no large space, the precooling condenser 54 can promote the heat dissipation of a considerable amount of sensible heat by using the forced ventilation action of the heat radiating fan 53, and the condenser piping following the precooling condenser 54 is a heat insulating box. In the case where it is disposed on the inner surface of the body outer box 33 in a heat conductive manner, the piping temperature can be effectively reduced, and the surface temperature of a corresponding portion of the outer box 33 can be lowered to reduce the user's etc. Discomfort caused by touching can be reduced.

なお、本実施の形態では予冷凝縮器54を用いたが、設置スペースが許せばフィンチューブ型熱交換器等の熱交換率の高い凝縮器を収容して、主凝縮器の強制冷却を行わせることももちろん可能である。   In this embodiment, the precooling condenser 54 is used. However, if the installation space permits, a condenser having a high heat exchange rate such as a finned tube heat exchanger is accommodated to cause forced cooling of the main condenser. Of course it is also possible.

また、凹部50は樹脂部品56により一体で成形することで部品点数を削減し、作業効率が向上するとともに、特に、樹脂部品56の底面と側面の合わせ部には傾斜部57を設けて繋ぐことで凹部50にかかる圧縮機52などの荷重を分散し強度も向上させることが可能となる。その場合冷蔵庫本体30の歪みなどを抑制し冷蔵室扉40aが傾くことを防止できる。   In addition, the recess 50 is integrally formed with the resin component 56 to reduce the number of components and improve work efficiency. In particular, an inclined portion 57 is provided at the joining portion of the bottom surface and the side surface of the resin component 56 to be connected. Thus, it is possible to disperse the load of the compressor 52 and the like applied to the recess 50 and improve the strength. In that case, distortion of the refrigerator main body 30 can be suppressed and the refrigerator compartment door 40a can be prevented from tilting.

また、放熱ファン53はファンカバー90を介して凹部50の空間及び機械室カバー62とシール部材93により簡易的に密着し、圧縮機52側を吐出区画91b、その逆を吸込区画92bとして分割しているため高熱の圧縮機52を通った空気を再び放熱ファン53が吸込むことがないので常に外気を予冷凝縮器54から圧縮機52への一定方向と送ることができる。   Further, the heat radiating fan 53 is simply brought into close contact with the space of the recess 50 and the machine chamber cover 62 and the seal member 93 through the fan cover 90, and the compressor 52 side is divided into a discharge section 91b and vice versa as a suction section 92b. Therefore, the heat radiating fan 53 does not suck the air that has passed through the high-temperature compressor 52 again, so that the outside air can always be sent from the precooling condenser 54 to the compressor 52 in a certain direction.

以上のように、機械室51の空気の流れを第2の区画92aから放熱ファン53そして第1の区画91aへと向かわせる構成としたことにより、冷凍システムの冷媒の流れが圧縮機52から吐出側の予冷凝縮器54に向かうのに対し対向流となり、効率の良い優れた放熱効果を得る風路を提供できる。   As described above, the flow of the refrigerant in the refrigeration system is discharged from the compressor 52 by adopting a configuration in which the air flow in the machine room 51 is directed from the second section 92a to the heat radiating fan 53 and the first section 91a. As opposed to the precooling condenser 54 on the side, it becomes a counterflow, and an air passage that obtains an efficient and excellent heat dissipation effect can be provided.

また、放熱ファン53を、凹部50の吸入区画92b側に配設することにより、放熱ファン53のモーター902部分にも温度の低い外気が流れるので、放熱ファン53自身の信頼性も向上することができる。   Further, by disposing the heat radiating fan 53 on the suction section 92b side of the recess 50, the outside air having a low temperature flows also to the motor 902 portion of the heat radiating fan 53, so that the reliability of the heat radiating fan 53 itself can be improved. it can.

また、凹部50の吸入区画92bの容積を吐出区画91bの容積よりも小さく構成することにより、放熱ファン53の空気の吸込み側の抵抗を少なくすることができ、凹部50内を流れる空気の風量を増加させることができる。   Further, by configuring the volume of the suction section 92b of the recess 50 to be smaller than the volume of the discharge section 91b, the resistance of the heat radiating fan 53 on the air suction side can be reduced, and the amount of air flowing through the recess 50 can be reduced. Can be increased.

また、凹部50の吸入区画92b側の奥行を、放熱ファン53の外形寸法とほぼ同じ大きさで構成することにより、冷蔵室40上部奥の吸入区画92bの裏側に空間が生まれる。この空間に冷蔵室風路126を構成することにより、冷蔵室40上部の奥行が大きくなり食品の収納スペースを拡大することが可能となる。   Further, by configuring the depth of the concave portion 50 on the suction section 92b side to be substantially the same as the outer dimension of the heat radiating fan 53, a space is created on the back side of the suction section 92b at the upper back of the refrigerator compartment 40. By forming the refrigerator compartment air passage 126 in this space, the depth of the upper part of the refrigerator compartment 40 is increased, and the food storage space can be expanded.

また、開口部63は吸込区画92bに位置し、機械室カバー62の上面は断熱箱体31の外箱33の天面よりも少し高く位置させ、その段差部に設けることで、常に温度の低い外気を吸込むことが可能となる。さらに、段差部を断熱箱体31の前方から背方に向かって高くなるように傾斜をつけることで、もし仮に断熱箱体31の天面に物を置かれたとしても開口部63は、完全に閉塞することはない。なお、機械室カバー62の背面の吸込区画92b側に外気を吸込むための開口部を設けても同様の効果を得ることができる。   Further, the opening 63 is positioned in the suction section 92b, and the upper surface of the machine room cover 62 is positioned slightly higher than the top surface of the outer box 33 of the heat insulating box 31 and is provided at the stepped portion so that the temperature is always low. It becomes possible to inhale outside air. Further, the stepped portion is inclined so as to become higher from the front of the heat insulation box 31 toward the back, so that even if an object is placed on the top surface of the heat insulation box 31, the opening 63 is completely There is no blockage. The same effect can be obtained even if an opening for sucking outside air is provided on the suction section 92b side of the rear surface of the machine room cover 62.

また、開口部64は吐出区画91bに位置し、圧縮機52を通って排熱できるよう、圧縮機52に対して放熱ファン53の反対側に設け、機械室カバー62背面の側端を端側に向かって断熱箱体31の前方側へ傾斜をつけることで、冷蔵庫本体30が設置される際に背面を壁に密着されても開口部64を閉塞させずに確保できる。   The opening 64 is located in the discharge section 91b and is provided on the opposite side of the heat dissipating fan 53 with respect to the compressor 52 so that heat can be exhausted through the compressor 52. By inclining toward the front side of the heat insulation box 31 toward the front side, the opening 64 can be secured without being blocked even when the back surface of the refrigerator main body 30 is closely attached to the wall.

また、開口部63、64を機械室カバー62の上方にも設けることにより、冷蔵庫背面が壁に密着し、左右にも空間がほとんどない設置環境においても、機械室カバー62の上方より吸排気が可能であり、風量が著しく低下することを防止できる。   In addition, by providing the openings 63 and 64 also above the machine room cover 62, the back of the refrigerator is in close contact with the wall, and even in an installation environment where there is almost no space on the left and right sides, intake and exhaust air is discharged from above the machine room cover 62. It is possible to prevent the air volume from being significantly reduced.

また、本実施の形態では、圧縮機52を構成する密閉容器72の下端と凹部50の底面との隙間を、密閉容器72の上端と機械室カバー62上面との隙間よりも大きくすることで、圧縮機52の下方に風が循環しやすくなり冷凍機油74の放熱を促進するとともに凹部50の底面の放熱をも促進することが可能となり、効率がよくかつ合理的な機械室51の排熱風路を実現できる。一般的に圧縮機52の下容器70に沿った形状で凹部50を形成する樹脂部品56の底面を窪ませて風路を形成するが、この場合は一部分を窪ませることで冷蔵室40への突出を極力抑えることができるので内容積減少への影響を小さくできるので効果が大きい。   In the present embodiment, the gap between the lower end of the sealed container 72 constituting the compressor 52 and the bottom surface of the recess 50 is made larger than the gap between the upper end of the sealed container 72 and the upper surface of the machine chamber cover 62. The wind easily circulates under the compressor 52 and promotes the heat radiation of the refrigerating machine oil 74 and also promotes the heat radiation of the bottom surface of the recessed portion 50, so that an efficient and rational exhaust heat air passage of the machine room 51 is achieved. Can be realized. Generally, the bottom surface of the resin component 56 that forms the recess 50 in a shape along the lower container 70 of the compressor 52 is recessed to form an air passage. In this case, a part of the resin component 56 is recessed to the refrigerator compartment 40. Since the protrusion can be suppressed as much as possible, the effect on the decrease in the internal volume can be reduced, so the effect is great.

また、本実施の形態では、圧縮機52内の圧縮要素78が上方に位置するもので示したが、圧縮要素78が下方に、電動要素77が上方に位置するものの方が高圧冷媒を圧縮するピストンなどの圧縮室82からの熱発生により、圧縮機52下方の温度が高くなり同時に冷凍機油74の温度も上昇しやすいことから、圧縮要素78が下方に位置する圧縮機を採用した場合の方が放熱効果は大きくなる。   Further, in the present embodiment, the compression element 78 in the compressor 52 is shown as being located above, but the compression element 78 is located below and the electric element 77 is located above compresses the high-pressure refrigerant. Heat generated from the compression chamber 82 such as a piston raises the temperature below the compressor 52 and at the same time tends to increase the temperature of the refrigerating machine oil 74. Therefore, the case where the compressor in which the compression element 78 is located below is adopted. However, the heat dissipation effect is increased.

また、放熱ファン53は必要に応じて風量を変化できるように回転数を可変できるようにすれば、圧縮機52が高温になりやすい外気温が高い場合や、冷蔵庫本体30がシステムキッチン枠などにより左右両側が囲われて放熱が阻害されるようなかたちで設置される場合や、圧縮機52が回転数可変型であり、その回転数が高い場合などには放熱ファン53を高い回転数に設定することでより放熱能力を大きくし、一方その逆では放熱ファン53を停止したり低い回転数に設定することができるため、より効率のよい機械室53の排熱ができるようになる。   Further, if the number of revolutions of the heat radiating fan 53 can be changed as required, the compressor 52 can be heated to a high temperature or the refrigerator main body 30 can be installed in a system kitchen frame or the like. When the left and right sides are enclosed and the heat dissipation is hindered, or when the compressor 52 is a variable speed type and the rotational speed is high, the heat dissipation fan 53 is set to a high speed. By doing so, the heat dissipation capability can be increased, and on the other hand, the heat dissipation fan 53 can be stopped or set to a low rotational speed, so that the exhaust heat of the machine chamber 53 can be more efficiently discharged.

なお、圧縮機52に放熱ファン53の風をあてるよう機械室51の風路を構成することが望ましいが、仮に圧縮機52が放熱ファン53の吐出区画91bの中に配置されていても機械室51の排熱風路としての効果が損なわれることはない。   Although it is desirable to configure the air passage of the machine room 51 so that the wind of the heat radiating fan 53 is applied to the compressor 52, the machine room is provided even if the compressor 52 is disposed in the discharge section 91b of the heat radiating fan 53. The effect of 51 as a heat exhaust air passage is not impaired.

また、本実施の形態では、機械室カバー62をL型に成形した一部品の場合について説明したが、機械室カバー62が上板と背板の2つの部品で構成されていても機械室51の排熱風路としての効果が損なわれることはない。   Further, in the present embodiment, a case where the machine room cover 62 is formed as an L-shaped part has been described. However, even if the machine room cover 62 is composed of two parts, an upper plate and a back plate, the machine room 51 is used. The effect as an exhaust heat air passage is not impaired.

また、機械室カバー62を上板と背板とに分割することにより、圧縮機52や放熱ファン53の着脱、吐出パイプ54b、吸込パイプ55などの周辺配管を着脱する際に、どちらか1つの部品のみを取外せばよいので作業性の向上が図れ、かつ、2つの部品に分けることにより、冷蔵庫本体30の製造ラインへ機械室カバー62を供給する際に、機械室カバー62を搬送するコンテナ等への収納効率を上げることができる。   Further, the machine room cover 62 is divided into an upper plate and a back plate, so that either one of the compressor 52 and the heat radiating fan 53 can be attached or detached when peripheral piping such as the discharge pipe 54b or the suction pipe 55 is attached or detached. A container for transporting the machine room cover 62 when supplying the machine room cover 62 to the production line of the refrigerator main body 30 by improving workability because only the parts need be removed and dividing into two parts. It is possible to increase the storage efficiency in the storage space.

(実施の形態2)
図7は本発明の実施の形態2における冷蔵庫の断熱箱体の機械室上面図である。実施の形態1と異なる点は、機械室51に冷凍システム内の水分除去をするためのドライヤ120を備えた構成とし、ドライヤ120を圧縮機52の風上(風向は図7の矢印にて記す)へ配設する構成とする。
(Embodiment 2)
FIG. 7 is a top view of the machine room of the heat insulating box of the refrigerator according to Embodiment 2 of the present invention. The difference from the first embodiment is that the machine room 51 is provided with a dryer 120 for removing moisture in the refrigeration system, and the dryer 120 is upwind of the compressor 52 (the wind direction is indicated by an arrow in FIG. 7). ).

以上のように、本実施の形態においては、放熱された高圧冷媒を常に吸込区画92bの外気に接触させることができ、放熱され液化した冷媒を再加熱されて気化し、ガス化された冷媒により冷媒循環に阻害を与える恐れが無いため、安定した液冷媒を供給することが可能となり、冷却システムの信頼性を向上させることが出来る。   As described above, in the present embodiment, the radiated high-pressure refrigerant can always be brought into contact with the outside air of the suction section 92b, and the radiated and liquefied refrigerant is reheated and vaporized, and the gasified refrigerant is used. Since there is no possibility of hindering the circulation of the refrigerant, it is possible to supply a stable liquid refrigerant and improve the reliability of the cooling system.

(実施の形態3)
図8は本発明の実施の形態3における冷蔵庫のドライヤの取り付け図である。実施の形態2と異なる点は、放熱ファン53にドライヤ120を係止した構成とする。放熱ファン53は羽901とモーター902とこれらを支えるファンカバー90で構成され、ファンカバー90はドライヤ120を固定するストッパー904を一体に備えた構成にし、ドライヤ120の長手方向が機械室51の長手方向と平行になるよう取り付ける構成とする。
(Embodiment 3)
FIG. 8 is an attachment diagram of the refrigerator dryer according to the third embodiment of the present invention. The difference from the second embodiment is that the dryer 120 is locked to the heat radiating fan 53. The heat radiating fan 53 includes a blade 901, a motor 902, and a fan cover 90 that supports them, and the fan cover 90 is integrally provided with a stopper 904 that fixes the dryer 120. The configuration is such that it is mounted parallel to the direction.

以上のように、本実施の形態においては、機械室51に放熱ファン53とドライヤ120を配設し、放熱ファン53は羽901とモーター902とこれらを支えるファンカバー90で構成され、ファンカバー90はドライヤ120を固定するストッパー904を一体に備えた構成にすることで、部品点数を削減と工数の削減が出来、安価な冷蔵庫を提供出来る。なおストッパー904に対する取り付け方向は、機械室51底面に対しドライヤ120の長手方向は垂直に取り付けても良い。ただし、ドライヤ120のキャピラリーチューブの接続する側を下方に構成することで、キャピラリーチューブを流れる冷媒の相状態は、液相で安定させることが出来るため、部品点数の削減と工数の削減が出来、安価な冷蔵庫を提供でき、冷却システムの信頼性を向上させることができる。   As described above, in the present embodiment, the heat radiating fan 53 and the dryer 120 are disposed in the machine room 51, and the heat radiating fan 53 includes the wing 901, the motor 902, and the fan cover 90 that supports them. Since the stopper 904 for fixing the dryer 120 is integrally provided, the number of parts and man-hours can be reduced, and an inexpensive refrigerator can be provided. The attachment direction with respect to the stopper 904 may be attached so that the longitudinal direction of the dryer 120 is perpendicular to the bottom surface of the machine room 51. However, by configuring the connection side of the capillary tube of the dryer 120 downward, the phase state of the refrigerant flowing through the capillary tube can be stabilized in the liquid phase, so the number of parts and man-hours can be reduced, An inexpensive refrigerator can be provided and the reliability of the cooling system can be improved.

以上のように、本発明にかかる冷蔵庫は、断熱箱体の天面後方に圧縮機等の機能部品を収容することで、使い勝手の良い貯蔵室の収納量を拡大するレイアウトを構成し、かつ、圧縮機を効率良くかつ合理的に冷却す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 constitutes a layout that expands the amount of storage in a convenient storage room by storing functional parts such as a compressor behind the top surface of the heat insulation box, and Since the compressor can be efficiently and rationally cooled, it can be applied to other cooling devices having a similar layout.

本発明の実施の形態1における冷蔵庫の縦断面図The longitudinal cross-sectional view of the refrigerator in Embodiment 1 of this invention 同実施の形態における冷蔵庫の機械室概略図Machine room schematic diagram of refrigerator in the same embodiment 同実施の形態における冷蔵庫の機械室の斜視図The perspective view of the machine room of the refrigerator in the embodiment 同実施の形態における冷蔵庫の機械室の分解図Exploded view of the machine room of the refrigerator in the same embodiment 同実施の形態における冷蔵庫の圧縮機の縦断面図Vertical sectional view of the compressor of the refrigerator in the same embodiment (a)同実施の形態における冷蔵庫の上部を背面から見た図(b)同実施の形態における冷蔵庫の図6(a)のA−A線断面図(A) The figure which looked at the upper part of the refrigerator in the same embodiment from the back (b) AA line sectional view of Drawing 6 (a) of the refrigerator in the same embodiment 本発明の実施の形態2における冷蔵庫の断熱箱体の機械室上面図Machine room top view of the heat insulation box of the refrigerator in Embodiment 2 of the present invention 本発明の実施の形態3における冷蔵庫のドライヤの取り付け図Attachment drawing of the refrigerator dryer in Embodiment 3 of this invention 従来の冷蔵庫の概略断面図Schematic sectional view of a conventional refrigerator 従来の冷蔵庫の概略斜視図Schematic perspective view of a conventional refrigerator

符号の説明Explanation of symbols

31 断熱箱体
51 機械室
52 圧縮機
53 放熱ファン
54 予冷凝縮器
91a 第1の区画
91b 吐出区画
92a 第2の区画
92b 吸込区画
120 ドライヤ
31 Heat Insulation Box 51 Machine Room 52 Compressor 53 Heat Dissipation Fan 54 Precooling Condenser 91a First Section 91b Discharge Section 92a Second Section 92b Suction Section 120 Dryer

Claims (7)

断熱箱体と、前記断熱箱体の天面後方部を庫内側に凹ませて形成した機械室を設け、前記機械室に少なくとも圧縮機とファンと凝縮器を収納し、その位置を前記機械室の左右方向の端から前記圧縮機、前記ファン、前記凝縮器と配置したことを特徴とする冷蔵庫。   A heat insulation box and a machine room formed by denting the rear part of the top surface of the heat insulation box inside the storage are provided, and at least a compressor, a fan, and a condenser are accommodated in the machine room, and the position of the machine room is A refrigerator, wherein the compressor, the fan, and the condenser are arranged from the left and right ends of the refrigerator. 前記機械室において、前記ファンを境に前記圧縮機を収容する第一の区画と前記凝縮器を収容する第二の区画に区画形成し、前記第一の区画を吐出区画、前記第二の区画を吸込区画としたことを特徴とする請求項1に記載の冷蔵庫。   In the machine room, a first compartment that accommodates the compressor and a second compartment that accommodates the condenser are formed with the fan as a boundary, and the first compartment is a discharge compartment and the second compartment. The refrigerator according to claim 1, wherein the suction compartment is used. 前記第一の区画の容積を前記第二の区画の容積より大きくしたことを特徴とする請求項1または2に記載の冷蔵庫。   The refrigerator according to claim 1 or 2, wherein the volume of the first compartment is larger than the volume of the second compartment. 前記凝縮器は配管で構成す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 comprised with piping, The refrigerator as described in any one of Claim 1 to 3 characterized by the above-mentioned. 前記機械室の空気の流れを前記第二の区画から前記ファン、そして前記第一の区画の順としたことを特徴とする請求項1から4のいずれか一項に記載の冷蔵庫。   5. The refrigerator according to claim 1, wherein the air flow in the machine room is in the order of the second compartment, the fan, and the first compartment. 前記機械室にドライヤを前記圧縮機よりも風上に配置したことを特徴とする請求項1から5のいずれか一項に記載の冷蔵庫。   The refrigerator according to any one of claims 1 to 5, wherein a dryer is disposed on the windward side of the compressor in the machine room. 前記ドライヤは、前記ファンとともに係止したことを特徴とする請求項1から6のいずれか一項に記載の冷蔵庫。   The refrigerator according to any one of claims 1 to 6, wherein the dryer is locked together with the fan.
JP2005245631A 2005-08-26 2005-08-26 Refrigerator Pending JP2007057193A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012233624A (en) * 2011-04-28 2012-11-29 Sanyo Electric Co Ltd Open showcase
JP2013195030A (en) * 2012-03-22 2013-09-30 Toshiba Corp Refrigerator
CN109959197A (en) * 2017-12-22 2019-07-02 青岛海尔股份有限公司 Refrigerating device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012233624A (en) * 2011-04-28 2012-11-29 Sanyo Electric Co Ltd Open showcase
JP2013195030A (en) * 2012-03-22 2013-09-30 Toshiba Corp Refrigerator
CN109959197A (en) * 2017-12-22 2019-07-02 青岛海尔股份有限公司 Refrigerating device
CN109959197B (en) * 2017-12-22 2024-05-14 青岛海尔股份有限公司 Refrigerating and freezing device

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