JP3609594B2 - refrigerator - Google Patents

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Publication number
JP3609594B2
JP3609594B2 JP31468997A JP31468997A JP3609594B2 JP 3609594 B2 JP3609594 B2 JP 3609594B2 JP 31468997 A JP31468997 A JP 31468997A JP 31468997 A JP31468997 A JP 31468997A JP 3609594 B2 JP3609594 B2 JP 3609594B2
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JP
Japan
Prior art keywords
refrigerator
connection port
drain pipe
coupling cylinder
slit
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Expired - Fee Related
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JP31468997A
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Japanese (ja)
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JPH11132639A (en
Inventor
靖行 高橋
幸信 西川
利英 長谷川
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Sanyo Electric Co Ltd
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Sanyo Electric Co Ltd
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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
    • F25D23/00General constructional features
    • F25D23/06Walls
    • F25D23/069Cooling space dividing partitions
    • 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
    • F25D2321/00Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
    • F25D2321/14Collecting condense or defrost water; Removing condense or defrost water
    • F25D2321/146Collecting condense or defrost water; Removing condense or defrost water characterised by the pipes or pipe connections

Landscapes

  • Removal Of Water From Condensation And Defrosting (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、上部に冷凍室、下部に冷蔵室を備える冷凍冷蔵庫に係り、特に冷凍室の冷却器からの除霜水をドレンパイプで排水する排水構造に関する。
【0002】
【従来の技術】
従来より、独身用などとして利用されている小型の冷凍冷蔵庫(以下、冷蔵庫と総称する)にあっては、冷凍室の奥部に冷却器と送風機とが配設され、冷却器にて冷却された冷気が、冷凍室に吹き出されると共に、ダクトにより冷蔵室に送られて冷蔵室の冷却が行われるものとなっている。
【0003】
ここで、冷却運転で冷凍室内の前記冷却器に成長する霜は、定期的に通電される除霜用ヒータなどで除霜される。その除霜水の排水は、例えば、特開平6−249568公報に示すように、冷却器下方に位置した樋状をした露受け板に落ち、この露受け板から断熱仕切壁を貫通するように延出した排水兼用連結部(筒)に接続した冷蔵室内のドレンパイプによって、庫外に排出されるようにされていた。
【0004】
このような排水構造であると、冷凍室内の空気と外部空気とがドレンパイプを介して流通状況にある。このため、特に冷凍室の開閉により一瞬入り込んだ外部の暖気が冷却されることで収縮し、冷凍室と外部とに圧力差を生じて、ドレンパイプを介して外気が吸い込まれるのを、ドレンパイプにUトラップを施して水を溜めて冷凍室と外部とが連通しないようにしていたが、圧力差によって空気が水の溜ったUトラップを通るときに、あぶくとなって、不快な音が発生したりしていた。
【0005】
従来はこの問題に対して、前記連結部に冷蔵室と通じる数個の孔を設け、冷却時、庫外からドレンパイプを通して流入する暖気に比べ、はるかに多い冷蔵室よりの戻り空気を連結部の孔から吸い込む方式を採用し、この問題に対処していた。
【0006】
【発明が解決しようとする課題】
しかし、このような空気の戻し構造であると、露受け部とドレンパイプとの接続のために連結部という部品を必要とし部品点数が多く、複雑な構造の排水部になるとともに、連結部には戻り空気のための孔を数個形成するという加工も加わり、コストの面でも不利となる問題等があった。
【0007】
本発明は上記問題に鑑み成されたもので、ドレンパイプと露受け部との接続に連結部を不要として簡単かつ確実に結合して達成できる簡易な構造の排水部と成して、部品点数等の削減を図ると同時に、ドレンパイプを通じての外気流入を冷蔵庫内からの空気戻しにより抑えるその戻し空気の通路形成を、簡単に排水部の組立てに伴い構成できるようにした冷蔵庫の排水構造を提供することを目的とする。
【0008】
上記目的を達成するため、本発明は、断熱壁にて区画された上方の冷凍室の奥部に冷却器を設けると共に、該冷却器の下方に、露受け板を設け、この露受け板で受けた露を、前記断熱壁中を通る排水路により下方の冷蔵室に流出させた後、ドレンパイプにより庫外に排出させるようにした冷蔵庫において、前記露受け板の底部から前記冷蔵室の天面下方に突出するよう延びる結合筒を設け、この結合筒の外周面に放射状に突出する複数の上下方向に延びるリブを設けると共に、筒部周壁に下端が開口する上下方向のスリットを対向形成し、一方、前記結合筒に接続されるドレンパイプの先端部には、前記リブに内径部が接して結合される筒状の接続口を設け、この接続口と前記結合筒を互いに嵌合しドレンパイプを接続した時、前記リブにより形成される接続口と前記結合筒との間の空間と前記スリットにより冷蔵室の空気を前記結合筒を経て冷凍室に戻すための空気戻し通路が形成される排水装置としたものである。
【0009】
また本発明は、前記ドレンパイプの接続口の長さを、前記結合筒の長さより短くし、冷蔵庫の天面部から一定の距離を隔てて接続口が結合筒の下端に結合連結されるようにしたものである。
【0010】
さらに、本発明は、前記スリットの長さを、ドレンパイプの接続口の長さより長くして、結合筒に接続した接続口の上方にスリットの上方部分が表出するようにしたものである。
【0011】
そして、本発明は、前記結合筒には前記スリットにより、ドレンパイプの接続口の挿入を容易とする弾性変形可能な円弧状の筒部壁片が形成されるようにしたものである。
【0012】
【発明の実施の形態】
以下、本発明の実施態様を、図面に基づき説明する。
【0013】
図1は冷蔵庫の断面図であり、図2は冷気吐出ダクトで冷蔵室への冷気送給の様相を説明する冷蔵庫の正面図であり、また図3は樹脂成形により冷凍室部と冷蔵室部とか区画形成されている内箱とその上下室区画用に用いられる中仕切断熱材との分解斜視図である。
【0014】
各図において、先ず冷蔵庫10は、発泡ウレタン等の断熱材16が充填され、前方に開口した断熱箱体17内を断熱仕切壁18にて上下に区画することにより、断熱仕切壁18の上方に冷凍室1を、下方に冷蔵室5を構成したものであり、冷凍室1および冷蔵室5の前方開口は回動式の断熱扉19a、19bによって、開閉自在に閉塞されている。
【0015】
また、前記断熱箱体17は詳しくは、塗装鋼板等金属製の外箱20と、冷凍室部1Bと冷蔵室部5Bとが一体形成されている図3に示すような、ABS等合成樹脂製の内箱21とが所要空間を隔てて組み合わされ、それら内外箱間に形成される空間に発泡ウレタン16が発泡充填されて形成される。その場合に、冷凍室部1Bと冷蔵室部5Bとの間に存在する前記断熱仕切壁18中には、該断熱仕切壁18内に充填された発泡ウレタン等とともに断熱作用を果たす発泡スチロール等にて成形された中仕切断熱材22が収納され、断熱仕切壁18を形成する一部材として介挿された構成となっている。また、後述するが、該中仕切断熱材22には、冷気を冷蔵室5に送る冷気通路や冷却器からの除霜水を排出する排水路などが形成されている。
【0016】
さて、前記冷凍室1の後部には冷却室2が画成され、そこには冷却器3が下部に、送風機4が上部に位置させて設けれられており、さらに、冷却器3の下方には除霜時に冷却器3から滴下する除霜水を受ける上部露受け部19が設けられている。
【0017】
そして、冷凍室1では、冷却器3にて冷却された冷気が図1の矢印に示すように、冷気の吹出口15aから吹出し、吸込口15bから冷却室2に戻るように前記送風機4により送風循環され、冷凍室1が冷却される。
【0018】
また、一方、冷却器3より冷却された冷気は、図2に示すように、冷凍室1へ送風される冷気と分流して、冷蔵室5へ延びている冷気送給用ダクト23により冷蔵室5にも送られている。そして、この冷気送給用ダクト23は、冷蔵室5内に設けた冷気吹出部26に開口し、その下方吹出口27aと前方吹出口27bから冷気が冷蔵室5へ吹き出す。この場合に前記冷気吐出ダクト23と冷気吹出部26との間は、前記中仕切断熱材22内に形成した冷気吹出用通路で連絡し、また冷蔵室5からの冷気も中仕切断熱材22内に形成した冷気戻り通路28で、冷却室2に戻るような構造となっている。これにより、冷却室2からの冷気が冷蔵室5に、矢印のように吹出し循環して冷却される。
【0019】
さて、図4は、前記中仕切断熱材22中に形成される冷気吹出用通路および冷気戻り通路28を形成する構造部品を示し、中仕切断熱材22の上側には、その後端部において片側部に、上下方向に貫通する角孔形状の冷気導入口30が設けられ、この冷気導入口30と前記冷気送給用のダクト23の下端部とが連結されるようになっている。また冷気導入口30と並んで、冷却器3からのドレン水を受けるように底面を両側から中央に向けて低くなるように傾斜させた樋状の露受け部31が設けられ、この露受け部31の中央部には角孔32が形成されて、露の流出口となると共に、冷蔵室5から冷気が冷却室2に戻る上部冷気戻り口ともなっている。また、露受け部31の上面は、アルミ製の露受け板33を被せて設けている。
【0020】
また、35は、材質が中仕切断熱材22と同じ発泡スチロールから成り、上方の開放口を前記冷気導入口30と連絡する冷気入口36とするとともに、冷蔵室5へ冷気を下方と前方に吹き出させる下方吹出口37aと前方吹出口37bを設けた吹出ダクトであり、該吹出ダクト35は、前記中仕切断熱材22の冷気導入口30と対応する下部に設けた凹所に下から嵌合して取付けられるようになっている。この結果、この結果、発泡成形する前に、中仕切断熱材22を内箱21の冷凍室部1Bと冷蔵室部5Bとの間29に挿入したとき、この冷気吹出ダクト35は、中仕切断熱材22の下部に出っ張った突出部として存在するため、この突出する吹出ダクト35を受け入れできるように、図3に示すように、内箱21の方にはその冷蔵室部5Bの表側を段状に凹ませて設けた前記吹出ダクト35と合致する形状の受嵌部46を冷蔵室5の内側に突出するように一体形成している。なお、前記中仕切断熱材22において、内箱21の冷凍室部1Bの底面と対応するその上面部は、一様の深さで凹ませて凹面部44を形成している。こうして凹面部44を設けると、内箱21と外箱20との空間に発泡ウレタン16を充填し冷蔵庫の本体を発泡形成する際に、発泡ウレタンがこの凹面部44にも充填され、充填後固化すると、冷凍室部1の底面を裏側から頑丈に支えられるという堅牢な構造にすることができるようになる。
【0021】
さらに、38は同じく発泡スチロール等から成り、下部に形成した前後方向に取付け凹所に下から嵌着され、中仕切断熱材22中に冷蔵室5からの冷気を冷却室2に戻す冷気戻りダクト28を形成する冷気戻りダクト断熱材である。そして、冷気戻りダクト断熱材38はその前端部に冷蔵室5からの冷気吸込口28aが設けられ、また後端部には、前記中仕切断熱材22に設けた上部冷気戻り口(角孔)32と連通する下部冷気戻り口39が樋状に凹ませて形成されている。なおこの下部冷気戻り口39は前記上部冷気戻り口32より大きい開口面積の角孔となっていると共に、そこには合成樹脂製の露受け板40が嵌着されるようになっている。ここでも、この露受け板40の上方開放口は除霜水の受け口であると共に、冷蔵室5からの冷気を前記上部冷気戻り口32から冷却室2へ戻すための冷気戻り口ともなっている。
【0022】
ここで、この露受け板40にはその内底面に排水孔41が有るとともに、底部からは、ドレンパイプ50の先端が接続されるドレンパイプ結合筒42(以下結合筒と略記する)が突出しており、該結合筒42は冷気戻りダクト断熱材38における下部冷気戻り口39の中央に穿設した受け孔43に差し込まれるようになっている。
【0023】
さて、ドレンパイプ50は、断熱箱体17の発泡成形時に、内外箱間の断熱材16中にその大部分を埋め込まれ、上端部分が冷蔵室5内に抜き出て、前記露受け板40の結合筒42と冷蔵室5内で接続されることにより、図5に示すようにして、本発明の除霜水の排水構造が形成される。
【0024】
次にその排水構造について、図5乃至図9に従って説明する。図6に示すように、露受け板40の下部から突出する結合筒42の外周面には、放射状に突出する複数の上下方向に延びるリブ53が突設形成されている。また、その筒部壁には、下端が開口し、上方に向かって或る高さHまで切欠き形成して設けたスリット54、54が対向形成されている。
【0025】
一方、ドレンパイプ50には、その先端部の蛇腹部51の先に、前記リブ53の突出寸法分だけ径大な口径となっている筒状の接続口55を設けており、その接続口55の内径部55aが、前記結合筒42のリブ53に接して嵌合結合されるものとなっている。
【0026】
従って、接続口55が結合筒42に嵌合して、ドレンパイプ50が接続されると、接続口55と結合筒42との間には、前記リブ53によって空間56が形成され、この空間56はスリット54と連通するので、冷蔵室5内の空気を結合筒42を通して、冷凍室1に戻すことのできる空気戻し路58が構成されるようになる。この空気戻し路58は、接続口55と結合筒42を結合作業するだけで形成でき、従来のように、空気流通のための通孔を持った連結筒を用いずとも、簡単に達成できる。
【0027】
ここで、接続筒55の長さLは、図8、9に示すように、結合筒42の長さDより短くなるように寸法設定して(D<L)、接続口55と冷蔵室5の天面部5dとの間に一定の距離Eが確保されるようにしている。このようにすると、ドレンパイプ50の接続時にその接続口55が冷蔵室5の天面部5dに当たらず、天面部5dが傷付けられることがない。
【0028】
また、スリット54の長さHと接続口55との長さ関係も、スリット54の方が接続口55の長さLより長くしている(H>L)。このようにすれば、スリット54が接続筒55で全て隠されず、スリット54の上部部分が表出し、冷蔵室5内の空気のスリット54への進入を容易とすることができる。
【0029】
また、スリット54、54を設けることで、結合筒42には、すり割りした2部分の弾性変形可能な円弧状壁片42b、42bが作られるので、ドレンパイプ50の接続筒55を結合筒42に挿入するとき、円弧状壁片42b、42bが内方に撓み、結合筒42が縮径するので、接続口55を挿入するのが容易に行えるようになり、ドレンパイプ50の接続作業が簡単に行えるようになる。従って、スリットの長さHは、このような弾性力が十分に出るような長さともなるように寸法設定している。
【0030】
さらに、接続口55が蛇腹部51でドレンパイプ50につなげられており、この蛇腹部51があると、接続口55の動きが自由となり、狭い冷蔵室5でドレンパイプ50先端のこの接続口55を結合筒42につなげるのが容易になる。
【0031】
このように、ドレンパイプ50が結合筒42に、その接続筒55でもって結合された時、リブ53によって結合筒42と接続筒55との間にできる空間56と、スリット54を通じて、空気戻し路58が形成されるので、図9の矢印のように冷蔵室5内の空気を冷凍室1の方へと戻すことができるようになり、冷却時にドレンパイプ50を通じての外気流入を抑えることができるようになっている。
【0032】
【発明の効果】
以上のように、本発明によれば、露受け板の冷蔵室内へ突出する結合筒に、放射状のリブと、上下方向のスリットを設け、ドレンパイプの方には、前記リブに内径部が接して結合される筒状の接続口を設け、この接続口を結合筒に結合すれば、両部材に間にできる空間と前記スリットとが連通し、冷蔵室内の空気を冷凍室に戻せる空気戻し路が、接続と同時に構成できる。これにより、露受け板の方の結合筒と、ドレンパイプの方の筒状の接続口という2部品だけで、ドレンパイプと露受け板との接続が行えるので、部品点数が削減し、接続作業も容易に行うことができる。
【0033】
そして、このように簡単にドレンパイプの接続部が構成でき、かつ冷却時に外気がドレンパイプから吸い込まれる前に、冷蔵室内の空気を先に冷凍室に戻すための空気戻し路が形成されることにより、従来生じていた除霜水に気泡が生じて発生する不快音を防止できる
【0034】
また、接続口の長さを結合筒の長さより短くし、ドレンパイプを接続した時、接続口と冷蔵庫の天面との間に一定の距離が保たれるようにしたので、接続作業時に接続口が冷蔵庫の天面と当たり、傷をつけるようなことがないように防止できる。
【0035】
また、結合筒につないだ接続口で、結合筒に設けてある空気戻し用のスリットが隠れないように、接続口をスリットより短くして、スリットに冷蔵室からの空気の進入をし易くして、順調に空気が戻るようなる。
【0036】
さらに、前記スリットにより、結合筒は弾性変化可能な円弧状の壁片となり、接続口の結合筒への挿入を容易にすることができるようになり、ドレンパイプの接続が簡単となる等の効果が得られる。
【図面の簡単な説明】
【図1】本発明に係る冷蔵庫の縦断側面図である。
【図2】冷気がダクトにより冷蔵室に送られて、冷蔵室が冷却される様相を説明した冷蔵庫のドアを外した正面図である。
【図3】冷凍室部と冷蔵室部とが成形された内箱と、発泡成形前に、内箱のその冷凍室部と冷蔵室部との間に介在される発泡スチロール製の中仕切断熱材とを示す構成要素の分解斜視図である。
【図4】中仕切断熱材と組み合わされ、除霜水の露を受け、冷蔵室の方へ導出させる排水部などを構成する各種部品との分解斜視図である。
【図5】中仕切断熱材に設けた露受け板の結合筒部に、ドレンパイプを接続した様相を示す構造斜視図である。
【図6】中仕切断熱材に設けた露受け板の結合筒部と、これにドレンパイプ先端の筒状の接続口を結合するその結合の仕方を示す構成要素分解斜視図と結合部の構造図である。
【図7】露受け板の結合筒部と、ドレンパイプ先端の接続口とを結合し接続部の要部平断面図である。
【図8】図7と同趣旨のドレンパイプ接続部の要部縦断断面図である。
【図9】図7と同趣旨のドレンパイプの接続により形成される空気戻り路により、冷蔵室から空気が冷凍室に戻る様相を、露受け板の結合筒部と、それに設けたスリット、およびドレンパイプの方の接続口との寸法関係を含めて示した構造図である。
【符号の説明】
1 冷凍室
3 冷却器
4 送風機
5 冷蔵室
18 断熱仕切壁
19 露受け部
21 内箱
22 中仕切断熱材
32 露の排水口
40 露受け板
42 結合筒
42a 円弧状の壁片
50 ドレンパイプ
51 蛇腹部
53 リブ
54 スリット
55 接続口
55a 内径部
56 空間
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a refrigerator-freezer having a freezer compartment at the top and a refrigerator compartment at the bottom, and more particularly to a drainage structure for draining defrost water from a cooler in the freezer compartment through a drain pipe.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, small refrigerators (hereinafter collectively referred to as refrigerators) that have been used for singles and the like are provided with a cooler and a blower at the back of the freezer and cooled by the cooler. The cool air is blown out into the freezer compartment and sent to the refrigerator compartment by a duct to cool the refrigerator compartment.
[0003]
Here, frost that grows in the cooler in the freezer compartment during the cooling operation is defrosted by a defrosting heater that is energized periodically. For example, as shown in Japanese Patent Laid-Open No. 6-249568, the defrost water drainage falls on a bowl-shaped dew receiving plate located below the cooler, and penetrates the heat insulating partition wall from the dew receiving plate. It was made to discharge | emit out of the warehouse by the drain pipe in the refrigerator compartment connected to the extended drainage combined connection part (cylinder).
[0004]
With such a drainage structure, the air in the freezer compartment and the external air are in circulation through the drain pipe. For this reason, in particular, the external warm air that has entered for a moment due to the opening and closing of the freezer compartment contracts by being cooled, creating a pressure difference between the freezer compartment and the outside, and the outside air being sucked in via the drain pipe The U trap was used to collect water to prevent communication between the freezer compartment and the outside, but when the air passed through the U trap where water accumulated due to the pressure difference, it became dangerous and an unpleasant sound was heard. It occurred.
[0005]
Conventionally, with respect to this problem, the connecting portion is provided with several holes that communicate with the refrigerator compartment, and when cooling, compared to the warm air flowing from the outside through the drain pipe, much more return air from the refrigerator compartment is connected to the connecting portion. This problem was addressed by adopting a method of sucking through the holes.
[0006]
[Problems to be solved by the invention]
However, such an air return structure requires a part called a connecting part for connection between the dew receiving part and the drain pipe, and has a large number of parts. In addition to the processing of forming several holes for return air, there were problems such as disadvantages in terms of cost.
[0007]
The present invention has been made in view of the above problems, and it has a drainage part with a simple structure that can be achieved by simply and reliably connecting a drain pipe and a dew receiving part without the need for a connecting part. Provide a drainage structure for the refrigerator that can easily configure the return air passage formation by assembling the drainage section, which suppresses the inflow of outside air through the drain pipe by returning the air from the inside of the refrigerator. The purpose is to do.
[0008]
In order to achieve the above object, the present invention provides a cooler at the back of an upper freezer compartment partitioned by a heat insulating wall, and a dew receiving plate below the cooler. In the refrigerator in which the received dew is discharged to the cold room below by a drainage channel passing through the heat insulating wall, and then drained out of the warehouse by a drain pipe, the ceiling of the cold room is discharged from the bottom of the dew receiving plate. A connecting cylinder extending so as to protrude downward is provided, and a plurality of vertically extending ribs projecting radially are provided on the outer peripheral surface of the connecting cylinder, and a vertical slit having a lower end is formed on the peripheral wall of the cylinder so as to face each other. On the other hand, at the tip of the drain pipe connected to the coupling cylinder, a cylindrical connection port is provided that is coupled with the inner diameter portion in contact with the rib, and the drain and the coupling cylinder are fitted to each other. When connecting the pipe, The connection port formed between the space and the slit between the coupling tube in which the air in the refrigerating compartment and a drain device air return passage for returning to the freezer compartment through said coupling tube is formed.
[0009]
In the present invention, the length of the connection port of the drain pipe is shorter than the length of the coupling tube, and the connection port is coupled and coupled to the lower end of the coupling tube at a certain distance from the top surface of the refrigerator. It is a thing.
[0010]
Furthermore, in the present invention, the length of the slit is made longer than the length of the connection port of the drain pipe so that the upper part of the slit is exposed above the connection port connected to the coupling cylinder.
[0011]
According to the present invention, an elastically deformable arc-shaped cylindrical wall piece that facilitates insertion of a connection port of a drain pipe is formed in the coupling cylinder by the slit.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0013]
FIG. 1 is a cross-sectional view of the refrigerator, FIG. 2 is a front view of the refrigerator for explaining the state of cold air supply to the refrigerating room with a cold air discharge duct, and FIG. 3 is a freezing room part and a refrigerating room part by resin molding. It is a disassembled perspective view of the inner box in which division is formed, and the partition heat insulating material used for the upper and lower chamber division.
[0014]
In each figure, first, the refrigerator 10 is filled with a heat insulating material 16 such as urethane foam, and the heat insulating box 17 that is opened forward is partitioned vertically by a heat insulating partition wall 18 so that the heat insulating box 17 is located above the heat insulating partition wall 18. The freezer compartment 1 comprises a refrigerator compartment 5 below, and the freezer compartment 1 and the front opening of the refrigerator compartment 5 are closed by pivotal heat insulating doors 19a and 19b so as to be freely opened and closed.
[0015]
The heat insulating box 17 is made of a synthetic resin such as ABS as shown in FIG. 3 in which a metal outer box 20 such as a coated steel plate, a freezer compartment 1B and a refrigerator compartment 5B are integrally formed. The inner box 21 is combined with a required space, and foamed urethane 16 is foamed and filled in a space formed between the inner and outer boxes. In that case, in the heat insulation partition wall 18 existing between the freezer compartment 1B and the refrigerator compartment portion 5B, with foamed polystyrene or the like that performs a heat insulation action together with urethane foam filled in the heat insulation partition wall 18 or the like. The formed middle partition heat insulating material 22 is housed and is configured to be inserted as one member forming the heat insulating partition wall 18. Further, as will be described later, the partition heat insulating material 22 is formed with a cool air passage for sending cool air to the refrigerating chamber 5, a drainage channel for discharging defrost water from the cooler, and the like.
[0016]
A cooling chamber 2 is defined at the rear of the freezing chamber 1, in which a cooler 3 is provided at the lower part and a blower 4 is provided at the upper part, and further below the cooler 3. Is provided with an upper dew receiving portion 19 for receiving defrost water dripping from the cooler 3 during defrosting.
[0017]
In the freezer compartment 1, the cool air cooled by the cooler 3 is blown out by the blower 4 so as to blow out from the cool air outlet 15 a and return from the inlet 15 b to the cooling chamber 2 as indicated by the arrow in FIG. 1. It is circulated and the freezer compartment 1 is cooled.
[0018]
On the other hand, the cool air cooled by the cooler 3 is separated from the cool air blown into the freezer compartment 1 as shown in FIG. Also sent to 5. The cool air supply duct 23 opens to a cool air outlet 26 provided in the refrigerator compartment 5, and cool air blows out from the lower outlet 27 a and the front outlet 27 b to the refrigerator compartment 5. In this case, the cold air discharge duct 23 and the cold air outlet 26 communicate with each other through a cold air outlet passage formed in the middle partition heat insulating material 22, and the cold air from the refrigerator compartment 5 is also in the middle partition heat insulating material 22. The cooling air return passage 28 is formed to return to the cooling chamber 2. As a result, the cool air from the cooling chamber 2 is blown out and circulated into the refrigerating chamber 5 as indicated by the arrows to be cooled.
[0019]
FIG. 4 shows structural parts forming the cool air blowing passage and the cool air return passage 28 formed in the partition heat insulating material 22, and one side portion at the rear end portion is located above the partition heat insulating material 22. In addition, a cold air inlet 30 having a square hole shape penetrating in the vertical direction is provided, and the cold air inlet 30 and a lower end portion of the cold air supply duct 23 are connected to each other. Aside from the cold air inlet 30, a bowl-shaped dew receiving portion 31 is provided that has a bottom surface inclined so as to be lowered from both sides toward the center so as to receive drain water from the cooler 3. A square hole 32 is formed in the central portion of 31 and serves as a dew outlet, and also serves as an upper cold air return port from which cold air returns from the refrigerator compartment 5 to the cooling chamber 2. The upper surface of the dew receiving part 31 is provided with an aluminum dew receiving plate 33 covered.
[0020]
35 is made of the same foamed polystyrene as the partition heat insulating material 22, and the upper opening is used as the cold air inlet 36 communicating with the cold air inlet 30, and the cold air is blown out downward and forward to the refrigerator compartment 5. A blowout duct provided with a lower blowout opening 37a and a front blowout opening 37b. The blowout duct 35 is fitted from below into a recess provided in a lower portion corresponding to the cold air inlet 30 of the partition heat insulating material 22. It can be installed. As a result, when the partition heat insulating material 22 is inserted into the space 29 between the freezer compartment 1B and the refrigerator compartment 5B of the inner box 21 before foam molding, the cold air outlet duct 35 is provided with the partition heat insulator. As shown in FIG. 3, the inner box 21 has a stepped front side of the refrigerator compartment 5B so that the protruding duct 35 can be received because it exists as a protruding portion protruding from the lower part of the material 22. A receiving portion 46 having a shape matching the blowing duct 35 provided in a recessed shape is integrally formed so as to protrude inside the refrigerator compartment 5. In the partition heat insulating material 22, the upper surface portion corresponding to the bottom surface of the freezer compartment 1 </ b> B of the inner box 21 is recessed at a uniform depth to form a concave surface portion 44. When the concave surface portion 44 is provided in this way, when the foamed urethane 16 is filled in the space between the inner box 21 and the outer box 20 and the refrigerator main body is foamed, the urethane foam is also filled into the concave surface portion 44 and solidifies after filling. Then, it becomes possible to make a robust structure in which the bottom surface of the freezer compartment 1 can be firmly supported from the back side.
[0021]
Further, 38 is also made of polystyrene foam or the like, and is fitted from below into a mounting recess in the front-rear direction formed in the lower part, and a cold air return duct 28 that returns cold air from the refrigerator compartment 5 to the cooling chamber 2 in the partition heat insulating material 22. It is a cold return duct insulation material that forms The cool air return duct heat insulating material 38 is provided with a cold air suction port 28a from the refrigerator compartment 5 at the front end, and the upper cold air return port (square hole) provided in the partition heat insulating material 22 at the rear end. A lower cold air return port 39 communicating with 32 is formed in a bowl shape. The lower cold air return port 39 is a square hole having an opening area larger than that of the upper cold air return port 32, and a synthetic resin dew receiving plate 40 is fitted therein. Here, the upper opening of the dew receiving plate 40 is a receiving port for defrost water, and also serves as a cold air return port for returning the cold air from the refrigerator compartment 5 from the upper cold air return port 32 to the cooling chamber 2.
[0022]
Here, the dew receiving plate 40 has a drain hole 41 on its inner bottom surface, and a drain pipe coupling cylinder 42 (hereinafter abbreviated as a coupling cylinder) to which the tip of the drain pipe 50 is connected protrudes from the bottom. The coupling cylinder 42 is inserted into a receiving hole 43 formed in the center of the lower cold air return port 39 in the cold air return duct heat insulating material 38.
[0023]
Now, the drain pipe 50 is mostly embedded in the heat insulating material 16 between the inner and outer boxes at the time of foam molding of the heat insulating box 17, and the upper end portion is extracted into the refrigerator compartment 5, so that the dew receiving plate 40 By connecting with the coupling cylinder 42 in the refrigerator compartment 5, as shown in FIG. 5, the drainage structure of the defrost water of this invention is formed.
[0024]
Next, the drainage structure will be described with reference to FIGS. As shown in FIG. 6, a plurality of vertically extending ribs 53 projecting radially are formed on the outer peripheral surface of the coupling cylinder 42 projecting from the lower part of the dew receiving plate 40. In addition, the cylindrical wall is formed with slits 54 and 54 facing each other so that the lower end is opened and the upper wall is notched to a certain height H.
[0025]
On the other hand, the drain pipe 50 is provided with a cylindrical connection port 55 having a diameter that is larger by the protruding dimension of the rib 53 at the tip of the bellows portion 51 at the tip thereof. The inner diameter portion 55a is fitted and coupled to the rib 53 of the coupling cylinder 42.
[0026]
Therefore, when the connection port 55 is fitted into the coupling cylinder 42 and the drain pipe 50 is connected, a space 56 is formed between the connection port 55 and the coupling cylinder 42 by the rib 53, and the space 56 Since it communicates with the slit 54, an air return path 58 that can return the air in the refrigerator compartment 5 to the freezer compartment 1 through the coupling cylinder 42 is configured. The air return path 58 can be formed simply by joining the connection port 55 and the coupling cylinder 42, and can be easily achieved without using a coupling cylinder having a through hole for air circulation as in the prior art.
[0027]
Here, as shown in FIGS. 8 and 9, the length L of the connecting tube 55 is set to be shorter than the length D of the connecting tube 42 (D <L), and the connecting port 55 and the refrigerator compartment 5 are set. A certain distance E is ensured between the top surface portion 5d of the head and the head. In this way, when the drain pipe 50 is connected, the connection port 55 does not hit the top surface portion 5d of the refrigerator compartment 5, and the top surface portion 5d is not damaged.
[0028]
Further, the length relationship between the length H of the slit 54 and the connection port 55 is also longer than the length L of the connection port 55 (H> L). In this way, the slits 54 are not completely hidden by the connection cylinder 55, and the upper part of the slits 54 is exposed, so that the air in the refrigerator compartment 5 can easily enter the slits 54.
[0029]
Further, by providing the slits 54 and 54, the joint cylinder 42 is formed with two portions of arc-shaped wall pieces 42b and 42b that can be elastically deformed, so that the connection cylinder 55 of the drain pipe 50 is connected to the joint cylinder 42. Since the arc-shaped wall pieces 42b, 42b bend inward and the coupling cylinder 42 is reduced in diameter when inserted into the connection port 55, the connection port 55 can be easily inserted, and the drain pipe 50 can be easily connected. Will be able to do. Accordingly, the length H of the slit is dimensioned so as to have such a length that such an elastic force is sufficiently generated.
[0030]
Further, the connection port 55 is connected to the drain pipe 50 at the bellows part 51. When the bellows part 51 is present, the movement of the connection port 55 becomes free, and the connection port 55 at the tip of the drain pipe 50 in the narrow refrigerator compartment 5 is provided. Can be easily connected to the coupling cylinder 42.
[0031]
In this way, when the drain pipe 50 is coupled to the coupling cylinder 42 with the connection cylinder 55, the air return path passes through the space 56 formed between the coupling cylinder 42 and the connection cylinder 55 by the rib 53 and the slit 54. Since 58 is formed, the air in the refrigerator compartment 5 can be returned to the freezer compartment 1 as indicated by the arrow in FIG. 9, and the inflow of outside air through the drain pipe 50 can be suppressed during cooling. It is like that.
[0032]
【The invention's effect】
As described above, according to the present invention, a radial rib and a vertical slit are provided in the coupling cylinder projecting into the refrigerator compartment of the dew receiving plate, and the inner diameter portion is in contact with the rib toward the drain pipe. If the connecting port is connected to the connecting cylinder, the space between the two members and the slit communicate with each other, and the air return path can return the air in the refrigerator compartment to the freezer compartment. Can be configured at the same time as the connection. As a result, the connection between the drain pipe and the dew plate can be done with only two parts: the coupling tube on the dew plate and the cylindrical connection port on the drain pipe. Can also be done easily.
[0033]
In addition, the drain pipe connection portion can be easily configured as described above, and an air return path for returning the air in the refrigerator compartment to the freezer compartment first before the outside air is sucked from the drain pipe during cooling is formed. Can prevent the unpleasant noise caused by the generation of bubbles in the defrosted water, which has been generated conventionally.
In addition, the length of the connection port is shorter than the length of the coupling cylinder, and when connecting the drain pipe, a certain distance is maintained between the connection port and the top of the refrigerator. This prevents the mouth from touching the top of the refrigerator and scratching it.
[0035]
In addition, the connection port connected to the coupling cylinder is made shorter than the slit so that the air return slit provided in the coupling cylinder is not hidden, making it easier for air to enter the slit from the refrigerator compartment. The air returns smoothly.
[0036]
Further, the slits make the coupling cylinder elastically changeable arc-shaped wall pieces, and the insertion of the connection port into the coupling cylinder can be facilitated, and the drain pipe can be easily connected. Is obtained.
[Brief description of the drawings]
FIG. 1 is a longitudinal side view of a refrigerator according to the present invention.
FIG. 2 is a front view with the refrigerator door removed, illustrating the manner in which cold air is sent to the refrigerator compartment by a duct and the refrigerator compartment is cooled.
FIG. 3 shows an inner box formed with a freezer compartment and a refrigeration compartment, and a foamed partition insulating heat insulating material interposed between the freezer compartment and the refrigeration compartment of the inner box before foam molding. It is a disassembled perspective view of the component which shows.
FIG. 4 is an exploded perspective view of various parts that constitute a drainage unit that is combined with a partition heat insulating material, receives defrosted water dew, and is led out toward a refrigerator compartment.
FIG. 5 is a structural perspective view showing an aspect in which a drain pipe is connected to a coupling cylinder portion of a dew receiving plate provided on a partition heat insulating material.
FIG. 6 is an exploded perspective view of components showing a coupling cylinder part of a dew receiving plate provided in a partition heat insulating material, and a coupling method for coupling a cylindrical connection port at a drain pipe tip, and a structure of the coupling part FIG.
FIG. 7 is a plan cross-sectional view of the main part of the connecting part, in which the connecting cylinder part of the dew receiving plate and the connection port at the end of the drain pipe are connected.
8 is a longitudinal sectional view of a main part of a drain pipe connecting portion having the same meaning as in FIG. 7;
9 shows how air is returned from the refrigerator compartment to the freezer compartment by the air return path formed by the connection of the drain pipe having the same meaning as in FIG. 7; It is the structural drawing shown including the dimensional relationship with the connection port of the drain pipe.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Freezing room 3 Cooler 4 Blower 5 Refrigerating room 18 Heat insulation partition wall 19 Dew receiving part 21 Inner box 22 Middle partition heat insulating material 32 Dew drain outlet 40 Dew receiving plate 42 Connecting cylinder 42a Arc-shaped wall piece 50 Drain pipe 51 Bellows Part 53 rib 54 slit 55 connection port 55a inner diameter part 56 space

Claims (4)

断熱壁にて区画された上方の冷凍室の奥部に冷却器を設けると共に、該冷却器の下方に、露受け板を設け、この露受け板で受けた露を、前記断熱壁中を通る排水路により下方の冷蔵室に流出させた後、ドレンパイプにより庫外に排出させるようにした冷蔵庫において、
前記露受け板の底部から前記冷蔵室の天面下方に突出するよう延びる結合筒を設け、この結合筒の外周面に放射状に突出する複数の上下方向に延びるリブを設けると共に、筒部周壁に下端が開口する上下方向のスリットを対向形成し、一方、前記結合筒に接続されるドレンパイプの先端部には、前記リブに内径部が接して結合される筒状の接続口を設け、この接続口と前記結合筒を互いに嵌合しドレンパイプを接続した時、前記リブにより形成される接続口と前記結合筒との間の空間と前記スリットにより冷蔵室の空気を前記結合筒を経て冷凍室に戻すための空気戻し通路が形成される排水装置としたことを特徴とする冷蔵庫。
A cooler is provided at the back of the upper freezer compartment partitioned by the heat insulating wall, and a dew receiving plate is provided below the cooler, and dew received by the dew receiving plate passes through the heat insulating wall. In a refrigerator that is made to drain out of the refrigerator by a drain pipe after flowing out into the refrigerator compartment below by the drainage channel,
A coupling cylinder extending from the bottom of the dew receiving plate to project downward from the top surface of the refrigerator compartment is provided, and a plurality of vertically extending ribs projecting radially are provided on the outer circumferential surface of the coupling cylinder, and the cylindrical wall is provided on the circumferential wall A slit in the vertical direction with the lower end opened is formed oppositely, and on the other hand, a cylindrical connection port is provided at the tip of the drain pipe connected to the coupling cylinder, and the inner diameter portion is in contact with and coupled to the rib. When the connection port and the coupling cylinder are fitted to each other and the drain pipe is connected, the air in the refrigerator compartment is refrigerated through the coupling cylinder by the space between the connection port formed by the rib and the coupling cylinder and the slit. A refrigerator characterized by a drainage device in which an air return passage for returning to a room is formed.
前記ドレンパイプの接続口の長さを、前記結合筒の長さより短くし、冷蔵庫の天面部から一定の距離を隔てて接続口が結合筒の下端に結合連結されるようにしたことを特徴とする請求項1に記載の冷蔵庫。The length of the connection port of the drain pipe is shorter than the length of the coupling tube, and the connection port is coupled and connected to the lower end of the coupling tube at a certain distance from the top surface of the refrigerator. The refrigerator according to claim 1. 前記スリットの長さを、ドレンパイプの接続口の長さより長くして、結合筒に接続した接続口の上方にスリットの上方部分が表出するようにしたことを特徴とする請求項1に記載の冷蔵庫。The length of the slit is made longer than the length of the connection port of the drain pipe so that the upper part of the slit is exposed above the connection port connected to the coupling cylinder. Refrigerator. 前記結合筒には、前記スリットにより、ドレンパイプの接続口の挿入を容易とする弾性変形可能な円弧状の筒部壁片が形成されることを特徴とする請求項1に記載の冷蔵庫。2. The refrigerator according to claim 1, wherein the coupling cylinder is formed with an elastically deformable arc-shaped cylindrical wall piece that facilitates insertion of a connection port of a drain pipe by the slit.
JP31468997A 1997-10-31 1997-10-31 refrigerator Expired - Fee Related JP3609594B2 (en)

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CN102331139B (en) * 2011-10-19 2013-04-17 合肥美的荣事达电冰箱有限公司 Refrigerator and drain pipe assembly used for same
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