JP2004125213A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase defrosting efficiency and reliability by reducing a variation in mounting a cooler when the cooler of a refrigerator is installed. <P>SOLUTION: After a water receiving pan 34 is fitted to an inner box 13, foamed insulator 14 is filled and foamed therein, and a lower claw 35 as a fixing member for fixing the refrigerator cooler 28 to the water receiving pan 34 is formed on both right and left sides thereof integrally with the water receiving pan 34. By this, the lower claw can be surely positioned, and the refrigerator cooler 28 can be mounted at the normal position. Accordingly, the defrosting efficiency can be prevented from being deteriorated or the remaining of frost can be prevented from occurring due to the inhibition of heat transfer by a thermo syphon effect in defrosting even if the refrigerant cooler 28 is installed aslant. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、冷蔵庫の冷却器の取付、固定構造に関するものである。
【０００２】
【従来の技術】
図６は従来の冷蔵庫の側面断面図である。図において、１は冷蔵庫本体、２はこの冷蔵庫本体１最上部に配置された冷蔵室、３は冷蔵庫本体１最下部に配置された冷凍室、４は冷蔵室２と冷凍室３の間に配置された野菜室、５は冷蔵室２と野菜室４を区画する中仕切り、６は野菜室４と冷凍室３とを区画する他の中仕切りである。７は冷凍室３後方に設けられた冷却器で、冷却器７上方に送風機８が設けられている。
図７は従来の冷蔵庫の冷却器周辺の斜視図で、水受皿に冷却器を取り付けた状態を示す斜視図である。水受皿９の取付は、ウレタン発泡時の発泡圧により変形が生じないように冷蔵庫本体１の発泡断熱材注入、発泡後に取り付けられるもので、水受皿９に冷却器７の二ヶ所のパイプ部を固定する冷却器保持部１０を設け前後左右の位置決めを行う。図８は冷却器保持部１０の側面断面拡大図である。図において、水受皿９の冷却器保持部１０により、冷却器７のＵ型パイプ部分を受けて冷却器７を支持している（例えば、特許文献１参照。）。
【０００３】
【特許文献１】
特開平１１−１１８３２８号公報
【０００４】
【発明が解決しようとする課題】
しかしながら、上記従来の構成では、水受皿９は冷蔵庫本体１の発泡断熱材注入、発泡後に取付けられるものであるが、ウレタン発泡時の発泡圧により水受皿９を取付ける部分の内箱は若干変形する場合があり、水受皿９と内箱との間にすき間が生じる。そのため、すき間をなくすためのシール部材が必要となるという課題があった。
【０００５】
また、水受皿９はウレタン発泡後に取付けるため取付バラツキが生じやすく、左右方向の傾きが生じた場合、冷却器７の固定は水受皿９の冷却器保持部１０で行なうため、冷却器７自身が傾いて配置される恐れがあった。傾いて設置されると冷却器７の内部に存在する液冷媒が冷却器７除霜時、サーモサイフォン効果による熱移動が阻害され除霜効率が悪くなったり、霜残りが生じる場合があるという課題があった。
【０００６】
本発明は、上記従来の課題を解決するもので、水受皿と内箱とのシールを確実にし、信頼性を高めるとともに、余分なシール部材を減らし、低コスト化を図ることを目的とする。
【０００７】
また、冷却器の取付時の左右傾きを低減し、除霜効率、信頼性を高める冷蔵庫を提供することを目的とする。
【０００８】
【課題を解決するための手段】
本発明の請求項１に記載の発明は、内箱と外箱と発泡断熱材とよりなる断熱箱体の内部に冷却器および前記冷却器の下部に位置し前記冷却器の除霜水を受ける水受皿を有する冷蔵庫において、前記水受皿を前記内箱に取り付けた後、前記発泡断熱材を注入、発泡するとともに前記水受皿に前記冷却器を固定するための固定部材を設けたものであり、水受皿の取付位置を規制することで水受皿に設けた冷却器の固定部材の位置決めが確実となり、冷却器の正規の取付設置ができる。
【０００９】
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、内箱に水受皿を載置する土手を設け、前記水受皿底面は中央部に向かい傾斜を設け排水管を形成し、前記排水管とドレンホースを連結させるとともに、水受皿の前面フランジ部と奥面フランジ部に発泡冶具を接して発泡断熱材を注入、発泡するものであり、発泡時の水受皿奥面の内箱と水受皿底面の土手を形成する内箱、および水受皿の変形を防止できる。
【００１０】
請求項３に記載の発明は、請求項２に記載の発明において、水受皿の奥面に凸部を設け、前記凸部の上端面高さは前記水受皿の前面フランジ部と略同一もしくは若干上方とし、水受皿の前面フランジ部と凸部に発泡冶具を接して発泡断熱材を注入、発泡するものであり、水受皿の前面フランジ部と奥面凸部とで押さえることで水受皿底面の変形を確実に防止できる。
【００１１】
請求項４に記載の発明は、請求項３に記載の発明において、発泡冶具と接する面の水受皿の前面フランジ部および凸部上端面を結んだ仮想線を前記水受皿底面の傾斜形状と同一とするものであり、断熱箱体の前面開口部から移動し固定される水受皿奥面の発泡冶具の当たり面をより広くでき、水受皿奥面の内箱変形を確実に防止できる。
【００１２】
請求項５に記載の発明は、請求項１から請求項４のいずれか一項に記載の発明において、水受皿の奥面上部に上端フランジ部を有し、前記上端フランジ部の上端高さを水受皿の前面フランジ部の上端高さより高くするとともに、前記上端フランジ部に接する内箱面に凹部を設け、前記上端フランジ部を前記凹部に配置し、前記上端フランジ部と内箱をアルミテープで固定するものであり、水受皿奥面上端フランジ部の面と、その上部の内箱の面を同一面として発泡冶具により確実に押さえることができるので特別なシール部材を必要としない。また、前記上端フランジ部の上端高さを水受皿の前面フランジ部の上端高さより高くしているので、断熱箱体の前面開口部から移動し固定される水受皿奥面の発泡冶具の当たり面をより広くでき、水受皿奥面の内箱変形を確実に防止できる。また、凹部に配置した上端フランジ部と内箱をアルミテープで固定することで、除霜時、水受皿奥面と内箱の間への水の侵入を防止することができる。
【００１３】
請求項６に記載の発明は、請求項３または４に記載の発明において、水受皿の奥面に設ける凸部は水平断面を三角形状としたものであり、除霜時の排水がスムーズに行なわれる。また、水平断面を三角形状とすることで凸部の強度を高めることが出来る。
【００１４】
請求項７に記載の発明は、請求項２から請求項６のいずれか一項に記載の発明において、水受皿を載置するために内箱に設けた土手と水受皿の下面との間に空間を設け、前記空間高さは発泡断熱材を注入、発泡時の内箱変形を吸収できる寸法としたものであり、発泡時に水受皿の下面に直接、発泡圧がかかることがないので水受皿底面の変形を防止することができる。
【００１５】
請求項８に記載の発明は、請求項２から請求項７のいずれか一項に記載の発明において、水受皿の前部下面の左右方向に下面フランジを設け、前記下面フランジの排水管近傍に切欠き部を設け前記排水管とドレンホースの連結を確認できるようにしたものであり、万一ドレンホースと内箱接続部からの断熱材が洩れドレンホースを詰まらした場合でも目視でその状況を一目で確認できるので、断熱材詰まりによる庫内水洩れを未然に防止することができる。
【００１６】
請求項９に記載の発明は、請求項１に記載の発明において、冷却器を固定するための固定部材を水受皿と一体に形成したものであり、部品点数を低減でき低コスト化を図ることができる。
【００１７】
請求項１０に記載の発明は、請求項１に記載の発明において、冷却器を固定するための固定部材の近傍に、冷却器側面のフィンを有しない部分への冷気の流れを遮断するリブを設けたものであり、冷気の流れを冷却器のフィン部に集中させることで熱交換効率が高まる。また、冷却器側面のフィンを有しない部分への着霜を防止できる。
【００１８】
請求項１１に記載の発明は、請求項１から請求項１０のいずれか一項に記載の発明において、冷却器の冷却パイプの入口あるいは出口に接続する配管近傍を補強する補強板を発泡断熱材の注入、発泡前に内箱に配設し、前記補強板には前記冷却器の冷却パイプの入口あるいは出口に接続する配管を固定する固定部材を設けたものであり、冷却器との接続配管を正規の位置に収めることができ、冷却器の前面を覆い風路を形成する断熱カバーへの配管当たりを防止でき、正規の風路を形成することができる。
【００１９】
請求項１２に記載の発明は、請求項１１に記載の発明において、冷却器の前面を覆い風路を形成する断熱カバーを有し、補強板には冷却器側面のフィンを有しない部分への冷気の流れを遮断するリブを前記断熱カバーと前記冷却器の上端フィン近傍まで形成したものであり、除湿しきれていない冷却器側面のフィンを有しない部分からの冷気の流れをさらに減少できる。
【００２０】
【発明の実施の形態】
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。
【００２１】
（実施の形態１）
図１は本発明の実施の形態１による冷蔵庫の側面断面図、図２は同実施の形態の冷蔵庫の冷蔵室冷却器近傍の正面図、図３は同実施の形態の冷蔵庫の冷蔵室冷却器近傍の要部斜視図、図４は、図３のＡ−Ａ部分断面図、図５は、図３のＢ矢視図である。
【００２２】
図１から図５において、１１は冷蔵庫本体で、鋼板で形成した外箱１２と樹脂で成形した内箱１３の内部に樹脂発泡したウレタンフォーム１４で断熱箱体を形成し前面を開口している。そして断熱仕切壁１５により上部貯蔵室と下部貯蔵室に区画している。上部貯蔵室の上方には冷蔵室１６、上部貯蔵室の下方には仕切板１７を介して野菜室１８を有する。また、下部貯蔵室は断熱仕切壁２０を介して上下に区画し、上方には切替室１９と製氷室（図示せず）、下部貯蔵室の下方には冷凍室２１を有している。また冷蔵庫本体１１の下部後方には機械室を有し内部に圧縮機（図示せず）を配置している。
【００２３】
また、冷蔵室扉２２は冷蔵室１６の前面開口部に位置し、一端を支点として回動するヒンジ式の扉である。２３、２４、２５、はそれぞれ、野菜室１８、切替室１９、冷凍室２１の前方開口部に位置する引出し式の扉である。
【００２４】
冷却ダクト２６は冷蔵室１６の背面の上下方向に形成し、内箱１３とダクトカバー２７とにより構成される。そして、冷却ダクト２６の上方には冷蔵室用冷却器２８、さらにその上部には冷蔵室用ファン２９を有している。また、冷蔵室用冷却器２８の前面には発泡断熱樹脂からなる断熱カバー３０を設けている。冷凍室用冷却器３１は冷凍室２１の背面に設けられ、冷凍室用冷却器３１の上部には冷凍室用ファン３２を配置している。また、上部ダクトカバー３３は前面に吐出口を有し冷蔵室１６の天面に配置され、ダクトカバー２７の上部で接続されている。
【００２５】
図２において、３４は樹脂成形からなる水受皿で、冷蔵室用冷却器２８の下方に位置し、水受皿３４の背面から冷蔵室用冷却器２８を固定するための固定部材としての下部ツメ３５を左右両側に水受皿３４と一体に成形している。そして、水受皿３４の下方には内箱から一体に形成した土手３６を設け、水受皿３４を内箱１３から一体に形成した土手３６の上部に取り付けた後、発泡断熱材１４を注入、発泡し断熱箱体を成形している。
【００２６】
図３において、水受皿３４の底面形状は中央部に向かい傾斜を設け、中央部には一体に排水管３７を形成し、排水管３７の外径はドレンホース３８の内径より小さくし排水管３７をドレンホース３８内に差し込んで、排水管３７とドレンホース３８を連結させてから発泡冶具（図示せず）を水受皿３４の前面フランジ部３９と奥面フランジ部４０に接して固定し発泡断熱材１４を注入、発泡し断熱箱体を成形する。
【００２７】
また、水受皿３４の奥面に水平断面を三角形状とした凸部４１を設け、凸部４１の上端面高さは水受皿３４の前面フランジ部３９の上端と略同一高さ、もしくは５〜１０ｍｍ高くし、水受皿３４の前面フランジ部３９と奥面フランジ部４０と凸部４１の上端面に発泡冶具を接した状態で発泡断熱材１４を注入、発泡し断熱箱体を成形することが望ましい。
【００２８】
また、加えて、発泡冶具と接する面の水受皿３４の前面フランジ部３９および凸部４１上端面を結んだ仮想線を水受皿３４の底面傾斜形状と同一としている。
【００２９】
また、水受皿３４の奥面上部に上端フランジ部４２を有し、上端フランジ部４２の上端高さを水受皿３４の前面フランジ部３９の上端高さより高くするとともに、上端フランジ部４２に接する内箱面に凹部４３を設け、上端フランジ部４２を凹部４３に配置し、上端フランジ部４２と内箱１３をアルミテープ４３ａで固定している。
【００３０】
また、水受皿３４を載置するために内箱に設けた土手３６と水受皿３４の下面との間に空間４４を設け、空間４４の高さは発泡断熱材を注入、発泡時の内箱変形を吸収できる寸法である１０ｍｍ程度としている。
【００３１】
また、水受皿３４の前部下面の左右方向に下面フランジ４５を設け、下面フランジ４５の排水管３７近傍に切欠き部４６を設け、排水管３７とドレンホース３８の連結を確認できるようにしている。
【００３２】
また、冷蔵室用冷却器２８を固定するための固定部材３５の近傍に、冷却器側面のフィンを有しない部分への冷気の流れを遮断する下部遮断リブ４７を冷蔵室用冷却器２８の最側面のフィンに当接するか若干の隙間（１〜５ｍｍ）を有するように形成している。
【００３３】
また、冷蔵室用冷却器２８の入口冷却パイプ４８に接続する入口配管４９、および出口冷却パイプ５０に接続する出口配管５１の内箱近傍を補強する樹脂成形の補強板５２を発泡断熱材１４の注入、発泡前に内箱１３に配設し、補強板５２には冷蔵室用冷却器２８の入口冷却パイプ４８あるいは出口冷却パイプ５０を固定する固定部材としての上部ツメ５３を補強板５２と一体に奥面から成形して設けている。
【００３４】
また、冷蔵室用冷却器２８の前面を覆い風路を形成する断熱カバー３０を有しており、補強板５２には冷蔵室用冷却器２８の側面のフィンを有しない部分への冷気の流れを遮断する上部遮断リブ５４を一体に成形し、上部遮断リブ５４は断熱カバー３０および冷蔵室用冷却器２８の上端フィンに接するか若干の隙間を有する位置まで形成している。そして、上部遮断リブ５４は内箱側部より冷蔵室用冷却器２８側へ下る傾斜を有するように形成している。
【００３５】
なお、冷蔵室用冷却器２８の組み込み方法は、水受皿３４および補強板５２を内箱１３に組み込み後、発泡冶具で押さえながら外箱１２と内箱１３の間に発泡断熱材１４を注入、発泡し断熱箱体を成形した後、入口冷却パイプ４８と入口配管４９、および出口冷却パイプ５０と出口配管５１をそれぞれ溶接部５５にて接続し、その後、冷蔵室用冷却器２８の両側面の下部パイプ５６と下部ツメ３５で冷蔵室用冷却器２８の下部を固定する。また、冷蔵室用冷却器２８の出口冷却パイプ５０には残留液冷媒を蒸発させるアキュームレータ５７を有し、アキュームレータ５７の上部の出口冷却パイプ５０の一部を上部ツメ５３で固定している。
【００３６】
上記構成において、水受皿３４を内箱１３に取り付けた後、発泡断熱材１４を注入、発泡するとともに水受皿３４に冷蔵室用冷却器２８を固定するための固定部材としての下部ツメ３５を左右両側に水受皿３４と一体に成形しているので、水受皿３４の取付位置を規制することで水受皿３４に設けた冷蔵室用冷却器２８の固定部材としての下部ツメ３５の位置決めが確実となり、冷蔵室用冷却器２８が正規の位置に取付られる。したがって、冷蔵室用冷却器２８が傾いて設置されることによって、除霜時、サーモサイフォン効果による熱移動が阻害され除霜効率が悪くなったり、霜残りが生じることがなくなる。
【００３７】
また、固定部材としての下部ツメ３５を左右両側に水受皿３４と一体に成形しているので、部品点数を低減でき低コスト化を図ることができる。
【００３８】
内箱１３に水受皿３４を載置する土手３６を設け、水受皿底面は中央部に向かい傾斜を設け排水管３７を形成し、前記排水管３７とドレンホース３８を連結させるとともに、水受皿３４の前面フランジ部３９と奥面フランジ部４０に発泡冶具を接して発泡断熱材１４を注入、発泡することにより、発泡時の水受皿奥面の内箱と水受皿底面の土手３６を形成する内箱１３、および水受皿３４の変形を防止でき、下部ツメ３５の位置決めが確実となり冷蔵室用冷却器２８が正規の位置に取付られる。したがって、除霜効率、除霜信頼性が高まる。
【００３９】
また、水受皿３４の奥面に水平断面を三角形状とした凸部４１を設け、凸部４１の上端面高さは水受皿３４の前面フランジ部３９の上端と略同一高さ、もしくは５〜１０ｍｍ高くし、水受皿３４の前面フランジ部３９と奥面フランジ部４０と凸部４１の上端面に発泡冶具を接した状態で発泡断熱材１４を注入、発泡することにより、発泡冶具での押さえるポイントが増加し、水受皿３４の底面の変形を確実に防止できる。
【００４０】
また、凸部４１の水平断面を三角形状とすることで、除霜時の排水がスムーズに行なわれる。また、水平断面を三角形状とすることで凸部４１の強度を高めることが出来る。
【００４１】
また、発泡冶具と接する面の水受皿３４の前面フランジ部３９および凸部４１上端面を結んだ仮想線を水受皿３４の底面傾斜形状と同一とすることで、断熱箱体の前面開口部から移動し固定される水受皿３４の奥面の発泡冶具の当たり面をより広くでき、水受皿３４の奥面の内箱変形を確実に防止できる。
【００４２】
また、水受皿３４の奥面上部に上端フランジ部４２を有し、上端フランジ部４２の上端高さを水受皿３４の前面フランジ部３９の上端高さより高くするとともに、上端フランジ部４２に接する内箱面に凹部４３を設け、上端フランジ部４２を凹部４３に配置し、上端フランジ部４２と内箱１３をアルミテープ４４で固定することにより、水受皿３４の奥面の上端フランジ部４２の面と、その上部の内箱の面を同一面として発泡冶具により確実に押さえることができるので特別なシール部材を必要としない。また、上端フランジ部４２の上端高さを水受皿３４の前面フランジ部３９の上端高さより高くしているので、断熱箱体の前面開口部から移動し固定される水受皿奥面の発泡冶具の当たり面をより広くでき、水受皿奥面の内箱変形を確実に防止できる。また、凹部４３に配置した上端フランジ部４２と内箱１３をアルミテープ４４で固定することで、除霜時、水受皿奥面と内箱の間への水の侵入を防止することができ、除霜信頼性が高まる。
【００４３】
また、水受皿３４を載置するために内箱に設けた土手３６と水受皿３４の下面との間に空間４４を設け、空間４４の高さは発泡断熱材を注入、発泡時の内箱変形を吸収できる寸法である１０ｍｍ程度としているので、発泡時に水受皿３４の下面に直接、発泡圧がかかることがなく水受皿３４の底面の変形を防止することができる。
【００４４】
また、水受皿３４の前部下面の左右方向に下面フランジ４５を設け、下面フランジ４５の排水管３７近傍に切欠き部４６を設け、排水管３７とドレンホース３８の連結を確認できるようにしているので、断熱材発泡時の排水管３７とドレンホース３８の連結部の詰まりによる庫内水洩れを未然に防止することができ、排水信頼性が高まる。
【００４５】
また、冷蔵室用冷却器２８を固定するための固定部材３５の近傍に、冷却器側面のフィンを有しない部分への冷気の流れを遮断する下部遮断リブ４７を冷蔵室用冷却器２８の最側面のフィンに当接するか若干の隙間（１〜５ｍｍ）を有するように形成することにより、冷気の流れを冷蔵室用冷却器２８のフィン部に集中させることで熱交換効率が高まる。また、冷却器側面のフィンを有しない部分への着霜を防止できる。
【００４６】
また、冷蔵室用冷却器２８の入口冷却パイプ４８に接続する入口配管４９、および出口冷却パイプ５０に接続する出口配管５１の内箱近傍を補強する樹脂成形の補強板５２を発泡断熱材１４の注入、発泡前に内箱１３に配設し、補強板５２には冷蔵室用冷却器２８の入口冷却パイプ４８あるいは出口冷却パイプ５０を固定する固定部材としての上部ツメ５３を補強板５２と一体に奥面から成形して設けることにより、冷蔵室用冷却器２８との接続配管を正規の位置に収めることができ、冷蔵室用冷却器２８の前面を覆い風路を形成する断熱カバー３０への配管当たりを防止でき、正規の風路を形成することができる。また、配管当たりによる音の発生を防止できる。
【００４７】
また、補強板５２には冷蔵室用冷却器２８の側面のフィンを有しない部分への冷気の流れを遮断する上部遮断リブ５４を一体に成形し、上部遮断リブ５４は断熱カバー３０および冷蔵室用冷却器２８の上端フィンに接するか若干の隙間を有する位置まで形成し、さらに、上部遮断リブ５４は内箱側部より冷蔵室用冷却器２８側へ下る傾斜を有するように形成しているので、除湿しきれていない冷却器側面のフィンを有しない部分からの冷気の流れをさらに減少でき、冷蔵室用ファン２９周辺への着霜を防止できる。また、上部遮断リブ５４は内箱側部より冷蔵室用冷却器２８側へ下る傾斜を有するように形成しているので除霜時の冷蔵室用冷却器２８との接続配管部からの排水が確実に行なわれる。
【００４８】
なお、本実施の形態では、冷蔵室、冷凍室それぞれに冷却器を有する冷蔵庫の冷蔵室用冷却器について説明したが、これは冷蔵室用冷却器は冷凍室冷却器に比べ奥行寸法を小さくでき、内箱にあらかじめ水受皿を取り付けた後、発泡断熱材を注入、発泡した時の内箱あるいは水受皿の変形を抑え易いからである。したがって、冷凍室用冷却器に対しても、内箱あるいは水受皿の変形を抑えることができる形状、寸法であれば、もちろん適用可能であり、同様の作用効果を得ることができる。
【００４９】
【発明の効果】
以上説明したように、請求項１に記載の発明は、内箱と外箱と発泡断熱材とよりなる断熱箱体の内部に冷却器および前記冷却器の下部に位置し前記冷却器の除霜水を受ける水受皿を有する冷蔵庫において、前記水受皿を前記内箱に取り付けた後、前記発泡断熱材を注入、発泡するとともに前記水受皿に前記冷却器を固定するための固定部材を設けたものであり、水受皿の取付位置を規制することで水受皿に設けた冷却器の固定部材の位置決めが確実となり、冷却器の正規の取付設置ができ、除霜効率、除霜信頼性が高まる。
【００５０】
また、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、内箱に水受皿を載置する土手を設け、前記水受皿底面は中央部に向かい傾斜を設け排水管を形成し、前記排水管とドレンホースを連結させるとともに、水受皿の前面フランジ部と奥面フランジ部に発泡冶具を接して発泡断熱材を注入、発泡するものであり、発泡時の水受皿奥面の内箱と水受皿底面の土手を形成する内箱、および水受皿の変形を防止でき、除霜効率、除霜信頼性が高まる。
【００５１】
また、請求項３に記載の発明は、請求項２に記載の発明において、水受皿の奥面に凸部を設け、前記凸部の上端面高さは前記水受皿の前面フランジ部と略同一もしくは若干上方とし、水受皿の前面フランジ部と凸部に発泡冶具を接して発泡断熱材を注入、発泡するものであり、水受皿の前面フランジ部と奥面凸部とで押さえることで水受皿底面の変形を確実に防止でき、除霜効率、除霜信頼性がさらに高まる。
【００５２】
また、請求項４に記載の発明は、請求項３に記載の発明において、発泡冶具と接する面の水受皿の前面フランジ部および凸部上端面を結んだ仮想線を前記水受皿底面の傾斜形状と同一とするものであり、断熱箱体の前面開口部から移動し固定される水受皿奥面の発泡冶具の当たり面をより広くでき、水受皿奥面の内箱変形を確実に防止できる。
【００５３】
また、請求項５に記載の発明は、請求項１から請求項４のいずれか一項に記載の発明において、水受皿の奥面上部に上端フランジ部を有し、前記上端フランジ部の上端高さを水受皿の前面フランジ部の上端高さより高くするとともに、前記上端フランジ部に接する内箱面に凹部を設け、前記上端フランジ部を前記凹部に配置し、前記上端フランジ部と内箱をアルミテープで固定するものであり、水受皿周辺に特別なシール部材を必要としない。また、断熱箱体の前面開口部から移動し固定される水受皿奥面の発泡冶具の当たり面をより広くでき、水受皿奥面の内箱変形を確実に防止できる。また、凹部に配置した上端フランジ部と内箱をアルミテープで固定することで、除霜時、水受皿奥面と内箱の間への水の侵入を防止することができる。
【００５４】
また、請求項６に記載の発明は、請求項３または４に記載の発明において、水受皿の奥面に設ける凸部は水平断面を三角形状としたものであり、除霜時の排水がスムーズに行なわれる。また、水平断面を三角形状とすることで凸部の強度を高めることが出来る。
【００５５】
また、請求項７に記載の発明は、請求項２から請求項６のいずれか一項に記載の発明において、水受皿を載置するために内箱に設けた土手と水受皿の下面との間に空間を設け、前記空間高さは発泡断熱材を注入、発泡時の内箱変形を吸収できる寸法としたものであり、発泡時に水受皿の下面に直接、発泡圧がかかることがないので水受皿底面の変形を防止することができる。
【００５６】
また、請求項８に記載の発明は、請求項２から請求項７のいずれか一項に記載の発明において、水受皿の前部下面の左右方向に下面フランジを設け、前記下面フランジの排水管近傍に切欠き部を設け前記排水管とドレンホースの連結を確認できるようにしたものであり、万一ドレンホースと内箱接続部からの断熱材が洩れドレンホースを詰まらした場合でも目視でその状況を一目で確認できるので、断熱材詰まりによる庫内水洩れを未然に防止することができ、排水信頼性が高まる。
【００５７】
また、請求項９に記載の発明は、請求項１に記載の発明において、冷却器を固定するための固定部材を水受皿と一体に形成したものであり、部品点数を低減でき低コスト化を図ることができる。
【００５８】
また、請求項１０に記載の発明は、請求項１に記載の発明において、冷却器を固定するための固定部材の近傍に、冷却器側面のフィンを有しない部分への冷気の流れを遮断するリブを設けたものであり、冷気の流れを冷却器のフィン部に集中させることで熱交換効率が高まる。また、冷却器側面のフィンを有しない部分への着霜を防止できる。
【００５９】
また、請求項１１に記載の発明は、請求項１から請求項１０のいずれか一項に記載の発明において、冷却器の冷却パイプの入口あるいは出口に接続する配管近傍を補強する補強板を発泡断熱材の注入、発泡前に内箱に配設し、前記補強板には前記冷却器の冷却パイプの入口あるいは出口に接続する配管を固定する固定部材を設けたものであり、冷却器との接続配管を正規の位置に収めることができ、冷却器の前面を覆い風路を形成する断熱カバーへの配管当たりを防止でき、正規の風路を形成することができる。また、配管当たりによる音の発生を防止できる。
【００６０】
また、請求項１２に記載の発明は、請求項１１に記載の発明において、冷却器の前面を覆い風路を形成する断熱カバーを有し、補強板には冷却器側面のフィンを有しない部分への冷気の流れを遮断するリブを前記断熱カバーと前記冷却器の上端フィン近傍まで形成したものであり、冷蔵室用ファン２９周辺への着霜を防止できる。
【図面の簡単な説明】
【図１】本発明の実施の形態１による冷蔵庫の側面断面図
【図２】同実施の形態の冷蔵庫の冷蔵室冷却器近傍の正面図
【図３】同実施の形態の冷蔵庫の冷蔵室冷却器近傍の要部斜視図
【図４】図３のＡ−Ａ部分断面図
【図５】図３のＢ矢視図
【図６】従来の冷蔵庫の側面断面図
【図７】従来の冷蔵庫の冷却器周辺の斜視図
【図８】従来の冷蔵庫の冷却器保持部の側面断面図
【符号の説明】
１１　冷蔵庫本体
１２　内箱
１３　外箱
１４　発泡断熱材
２８　冷蔵室用冷却器
３０　断熱カバー
３４　水受皿
３５　下部ツメ
３６　土手
３７　排水管
３８　ドレンホース
３９　前面フランジ部
４０　奥面フランジ部
４１　凸部
４２　上端フランジ部
４３　凹部
４３ａ　アルミテープ
４４　空間
４５　下面フランジ
４６　切欠き部
４７　下部遮断リブ
４８　入口冷却パイプ
４９　入口配管
５０　出口冷却パイプ
５１　出口配管
５２　補強板
５３　上部ツメ
５４　上部遮断リブ[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a refrigerator mounting and fixing structure.
[0002]
[Prior art]
FIG. 6 is a side sectional view of a conventional refrigerator. In the figure, 1 is a refrigerator main body, 2 is a refrigerator room arranged at the top of the refrigerator main body 1, 3 is a freezing room arranged at the bottom of the refrigerator main body 1, 4 is a space between the refrigerator room 2 and the freezer room 3. Vegetable compartment 5 is a partition that divides refrigerator compartment 2 and vegetable compartment 4, and 6 is another partition that compartments vegetable compartment 4 and freezer compartment 3. Reference numeral 7 denotes a cooler provided at the rear of the freezing compartment 3, and a blower 8 is provided above the cooler 7.
FIG. 7 is a perspective view around a cooler of a conventional refrigerator, and is a perspective view showing a state where the cooler is attached to a water tray. The water receiving tray 9 is attached after the foam insulating material is injected into the refrigerator main body 1 and foamed so that the foaming pressure at the time of urethane foaming does not cause deformation, and two pipe portions of the cooler 7 are attached to the water receiving tray 9. A fixed cooler holder 10 is provided to perform front-rear, left-right positioning. FIG. 8 is an enlarged side cross-sectional view of the cooler holding unit 10. In the figure, a cooler holding portion 10 of a water receiving tray 9 receives a U-shaped pipe portion of the cooler 7 and supports the cooler 7 (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-11-118328
[0004]
[Problems to be solved by the invention]
However, in the above-described conventional configuration, the water tray 9 is attached after the foam insulation material is injected and foamed in the refrigerator body 1, but the inner box of the part where the water tray 9 is attached is slightly deformed by the foaming pressure at the time of urethane foaming. In some cases, a gap is created between the water receiving tray 9 and the inner box. Therefore, there is a problem that a seal member for eliminating the gap is required.
[0005]
In addition, since the water receiving tray 9 is attached after urethane foaming, mounting variation tends to occur. If the water receiving tray 9 is tilted in the left-right direction, the cooler 7 is fixed by the cooler holding portion 10 of the water receiving tray 9, so that the cooler 7 itself is used. There was a risk of being placed at an angle. When the liquid refrigerant present inside the cooler 7 is installed at an angle, the heat transfer due to the thermosiphon effect is hindered when the cooler 7 is defrosted, and the defrosting efficiency may deteriorate or frost may remain. was there.
[0006]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and it is an object of the present invention to secure the seal between a water tray and an inner box, to enhance reliability, to reduce an extra seal member, and to reduce the cost.
[0007]
It is another object of the present invention to provide a refrigerator that reduces the left-right inclination when a cooler is attached and improves defrosting efficiency and reliability.
[0008]
[Means for Solving the Problems]
The invention according to claim 1 of the present invention is configured such that a cooler and a lower part of the cooler are located inside a heat insulating box made of an inner box, an outer box and a foamed heat insulating material, and receive defrost water of the cooler. In a refrigerator having a water tray, after attaching the water tray to the inner box, the foam insulating material is injected and foamed, and a fixing member for fixing the cooler to the water tray is provided, By regulating the mounting position of the water receiving tray, the positioning of the fixing member of the cooler provided on the water receiving tray is ensured, and the proper mounting and installation of the cooler can be performed.
[0009]
According to a second aspect of the present invention, in the first aspect of the present invention, a bank for mounting a water tray on the inner box is provided, and a bottom surface of the water tray is inclined toward a central portion to form a drain pipe; Along with connecting the drain pipe and drain hose, a foaming jig is brought into contact with the front and rear flanges of the water pan to inject and foam foam insulation. The inner box forming the bank on the bottom surface of the water tray and the water tray can be prevented from being deformed.
[0010]
According to a third aspect of the present invention, in the second aspect of the invention, a convex portion is provided on a back surface of the water tray, and a height of an upper end surface of the convex portion is substantially the same as or slightly equal to a front flange portion of the water tray. The upper side, the foaming jig is in contact with the front flange part and the convex part of the water tray, and the foam insulation is injected and foamed. Deformation can be reliably prevented.
[0011]
According to a fourth aspect of the present invention, in the invention of the third aspect, an imaginary line connecting the front flange portion and the upper end surface of the water receiving tray on the surface in contact with the foaming jig is the same as the inclined shape of the bottom surface of the water receiving tray. The contact surface of the foaming jig on the back surface of the water tray that is moved and fixed from the front opening of the heat insulating box body can be made wider, and the inner box deformation on the back surface of the water tray can be reliably prevented.
[0012]
According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, an upper end flange portion is provided at an upper part on the back side of the water receiving tray, and an upper end height of the upper end flange portion is set. With the height higher than the upper end height of the front flange portion of the water receiving tray, a concave portion is provided on the inner box surface in contact with the upper end flange portion, the upper end flange portion is arranged in the concave portion, and the upper end flange portion and the inner box are aluminum tape. The surface of the upper end flange portion of the back surface of the water tray and the surface of the inner box on the upper side thereof can be securely pressed by the foaming jig, so that a special sealing member is not required. In addition, since the upper end height of the upper end flange portion is higher than the upper end height of the front flange portion of the water receiving pan, the contact surface of the foaming jig at the back of the water receiving pan which is moved and fixed from the front opening of the heat insulating box body. Can be made wider, and deformation of the inner box at the back of the water tray can be reliably prevented. In addition, by fixing the upper end flange portion disposed in the concave portion and the inner box with aluminum tape, it is possible to prevent water from entering between the inner surface of the water tray and the inner box during defrosting.
[0013]
According to a sixth aspect of the present invention, in the third or fourth aspect, the convex portion provided on the inner surface of the water receiving tray has a triangular horizontal section, so that drainage during defrosting is performed smoothly. It is. In addition, the strength of the convex portion can be increased by making the horizontal cross section a triangular shape.
[0014]
According to a seventh aspect of the present invention, in the invention according to any one of the second to sixth aspects, between a bank provided on the inner box for placing the water tray and a lower surface of the water tray. A space is provided, and the height of the space is set to a size capable of absorbing foam insulation and absorbing inner box deformation at the time of foaming. The foaming pressure is not directly applied to the lower surface of the water tray at the time of foaming. Deformation of the bottom surface can be prevented.
[0015]
According to an eighth aspect of the present invention, in the invention according to any one of the second to seventh aspects, a lower surface flange is provided in a left-right direction of a front lower surface of the water receiving tray, and the lower surface flange is provided near a drain pipe. A notch is provided so that the connection between the drain pipe and the drain hose can be confirmed.Even if the insulation material leaks from the drain hose and the inner box connection part and the drain hose is clogged, the situation is visually observed. Since it can be confirmed at a glance, it is possible to prevent water leakage in the refrigerator due to clogging of the heat insulating material.
[0016]
According to a ninth aspect of the present invention, in the first aspect of the present invention, a fixing member for fixing the cooler is formed integrally with the water tray, so that the number of parts can be reduced and cost can be reduced. Can be.
[0017]
According to a tenth aspect of the present invention, in the first aspect, a rib for blocking a flow of cool air to a portion having no fin on a side surface of the cooler is provided near a fixing member for fixing the cooler. The heat exchange efficiency is increased by concentrating the flow of cool air on the fins of the cooler. In addition, it is possible to prevent the formation of frost on a portion having no fin on the side surface of the cooler.
[0018]
According to an eleventh aspect of the present invention, in the invention according to any one of the first to tenth aspects, a reinforcing plate for reinforcing the vicinity of a pipe connected to an inlet or an outlet of a cooling pipe of a cooler is a foamed heat insulating material. The reinforcing plate is provided with a fixing member for fixing a pipe connected to an inlet or an outlet of a cooling pipe of the cooler, and the reinforcing pipe is connected to the cooler. Can be accommodated in a proper position, and it is possible to prevent a pipe from hitting a heat insulating cover which covers the front surface of the cooler and forms an air passage, and can form a proper air passage.
[0019]
According to a twelfth aspect of the present invention, in the eleventh aspect, there is provided a heat insulating cover that covers a front surface of the cooler and forms an air passage, and a reinforcing plate is provided on a portion having no fin on the side surface of the cooler. A rib for blocking the flow of cool air is formed up to the vicinity of the heat insulating cover and the upper end fin of the cooler, so that the flow of cool air from a portion of the cooler that has not been dehumidified and has no fins can be further reduced.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of a refrigerator according to the present invention will be described with reference to the drawings.
[0021]
(Embodiment 1)
FIG. 1 is a side sectional view of a refrigerator according to a first embodiment of the present invention, FIG. 2 is a front view near a refrigerator compartment cooler of the refrigerator of the embodiment, and FIG. 3 is a refrigerator compartment cooler of the refrigerator of the embodiment. FIG. 4 is a partial sectional view taken along line AA of FIG. 3, and FIG. 5 is a view taken in the direction of arrow B in FIG.
[0022]
In FIG. 1 to FIG. 5, reference numeral 11 denotes a refrigerator main body, and a heat insulating box body is formed by a resin foamed urethane foam 14 inside an outer box 12 formed of a steel plate and an inner box 13 formed of a resin, and the front surface is opened. . And it is divided into an upper storage room and a lower storage room by the heat insulating partition wall 15. A refrigerator compartment 16 is provided above the upper storage compartment, and a vegetable compartment 18 is provided below the upper storage compartment via a partition plate 17. The lower storage room is vertically divided via a heat insulating partition wall 20, and has a switching room 19 and an ice making room (not shown) above, and a freezing room 21 below the lower storage room. A refrigerator (not shown) is disposed inside a machine room at a lower rear portion of the refrigerator main body 11.
[0023]
The refrigerating compartment door 22 is a hinge type door that is located at the front opening of the refrigerating compartment 16 and rotates around one end as a fulcrum. Reference numerals 23, 24, and 25 denote drawer-type doors located at the front openings of the vegetable compartment 18, the switching compartment 19, and the freezing compartment 21, respectively.
[0024]
The cooling duct 26 is formed in the vertical direction on the back surface of the refrigerator compartment 16, and includes the inner box 13 and the duct cover 27. Further, a refrigerator cooler 28 is provided above the cooling duct 26, and a refrigerator fan 29 is provided above the cooler 28. Further, a heat insulating cover 30 made of a foamed heat insulating resin is provided on the front surface of the refrigerator cooler 28. The freezer compartment cooler 31 is provided on the back surface of the freezer compartment 21, and a freezer compartment fan 32 is disposed above the freezer compartment cooler 31. The upper duct cover 33 has a discharge port on the front surface, is arranged on the top surface of the refrigerator compartment 16, and is connected to the upper portion of the duct cover 27.
[0025]
In FIG. 2, reference numeral 34 denotes a water receiving tray made of resin molding, which is located below the refrigerator cooler 28, and has a lower claw 35 as a fixing member for fixing the refrigerator cooler 28 from the back of the water tray 34. Are integrally formed with the water receiving tray 34 on both left and right sides. A bank 36 integrally formed from the inner box is provided below the water receiving tray 34, and the water receiving tray 34 is attached to an upper portion of the bank 36 integrally formed from the inner box 13, and then the foamed heat insulating material 14 is injected and foamed. The heat insulation box is molded.
[0026]
In FIG. 3, the bottom shape of the water receiving pan 34 is inclined toward the center, and a drain pipe 37 is integrally formed at the center. The outer diameter of the drain pipe 37 is smaller than the inner diameter of the drain hose 38, and the drain pipe 37 is formed. Is inserted into the drain hose 38 to connect the drain pipe 37 and the drain hose 38, and then a foaming jig (not shown) is fixed in contact with the front flange portion 39 and the back flange portion 40 of the water receiving tray 34. The material 14 is injected and foamed to form a heat insulating box.
[0027]
Further, a convex portion 41 having a triangular horizontal cross section is provided on the inner surface of the water tray 34, and the height of the upper end surface of the convex portion 41 is substantially the same as the upper end of the front flange portion 39 of the water tray 34, or 5 to 5. It is possible to increase the height by 10 mm, inject the foamed heat insulating material 14 in a state where the foaming jig is in contact with the front flange portion 39, the backside flange portion 40, and the upper end surface of the convex portion 41 of the water receiving tray 34, foam the foamed material, and form a heat insulating box. desirable.
[0028]
In addition, an imaginary line connecting the front flange portion 39 and the upper end surface of the convex portion 41 of the surface of the water tray 34 in contact with the foaming jig has the same shape as the inclined bottom surface of the water tray 34.
[0029]
In addition, an upper end flange 42 is provided at the upper part on the back side of the water receiving tray 34, and the upper end height of the upper end flange 42 is higher than the upper end height of the front flange 39 of the water receiving tray 34, and the upper end flange 42 is in contact with the upper end flange 42. A concave portion 43 is provided on the box surface, the upper end flange portion 42 is disposed in the concave portion 43, and the upper end flange portion 42 and the inner box 13 are fixed with aluminum tape 43a.
[0030]
Further, a space 44 is provided between a bank 36 provided in the inner box for mounting the water tray 34 and the lower surface of the water tray 34, and the height of the space 44 is adjusted by injecting foam insulation material and forming the inner box at the time of foaming. It is about 10 mm, which is a dimension capable of absorbing deformation.
[0031]
Further, a lower surface flange 45 is provided in the left and right direction of the front lower surface of the water receiving tray 34, and a notch 46 is provided in the lower surface flange 45 near the drain pipe 37 so that the connection between the drain pipe 37 and the drain hose 38 can be confirmed. I have.
[0032]
In addition, near the fixing member 35 for fixing the refrigerator compartment cooler 28, a lower cut-off rib 47 for blocking the flow of cold air to the portion having no fin on the side of the refrigerator is provided with the lowermost rib 47 of the refrigerator compartment cooler 28. It is formed so as to be in contact with the side fins or to have a slight gap (1 to 5 mm).
[0033]
Further, a resin-molded reinforcing plate 52 for reinforcing the vicinity of the inner box of an inlet pipe 49 connected to the inlet cooling pipe 48 of the refrigerator cooler 28 and an outlet pipe 51 connected to the outlet cooling pipe 50 is formed of the foamed heat insulating material 14. It is arranged in the inner box 13 before injection and foaming, and the reinforcing plate 52 is integrated with the upper plate 53 as a fixing member for fixing the inlet cooling pipe 48 or the outlet cooling pipe 50 of the refrigerator cooler 28. Formed from the back side.
[0034]
Further, it has a heat insulating cover 30 that covers the front surface of the refrigerator compartment cooler 28 and forms an air passage, and the flow of cold air to the portion of the side of the refrigerator compartment cooler 28 that does not have fins is provided on the reinforcing plate 52. The upper blocking rib 54 is formed integrally with the heat insulating cover 30 and the upper end fin of the refrigerator cooler 28 or formed to a position having a slight gap. The upper cut-off rib 54 is formed so as to have a slope descending from the inner box side to the refrigerator compartment cooler 28 side.
[0035]
In addition, the method of installing the refrigerator cooler 28 is as follows. After the water receiving tray 34 and the reinforcing plate 52 are assembled in the inner box 13, the foam insulating material 14 is injected between the outer box 12 and the inner box 13 while being held down by a foaming jig. After foaming to form a heat insulating box, the inlet cooling pipe 48 and the inlet pipe 49, and the outlet cooling pipe 50 and the outlet pipe 51 are connected at the welded portions 55, respectively. The lower portion of the refrigerator cooler 28 is fixed by the lower pipe 56 and the lower claw 35. The outlet cooling pipe 50 of the refrigerator cooler 28 has an accumulator 57 for evaporating the residual liquid refrigerant, and a part of the outlet cooling pipe 50 above the accumulator 57 is fixed by an upper claw 53.
[0036]
In the above configuration, after attaching the water receiving tray 34 to the inner box 13, the foamed heat insulating material 14 is injected and foamed, and the lower claw 35 as a fixing member for fixing the refrigerator cooler 28 to the water receiving tray 34 is moved right and left. Since the water receiving tray 34 is integrally formed on both sides, the mounting position of the water receiving tray 34 is regulated, so that the positioning of the lower claw 35 as a fixing member of the refrigerator cooler 28 provided on the water receiving tray 34 is ensured. , The refrigerator cooler 28 is mounted at a proper position. Therefore, by installing the refrigerator cooler 28 at an angle, the heat transfer due to the thermosiphon effect is prevented during defrosting, so that the defrosting efficiency does not deteriorate and no frost remains.
[0037]
Further, since the lower claws 35 as the fixing members are integrally formed on the left and right sides with the water receiving tray 34, the number of parts can be reduced and the cost can be reduced.
[0038]
A bank 36 on which the water tray 34 is placed is provided in the inner box 13, the bottom surface of the water tray is inclined toward the center to form a drain pipe 37, and the drain pipe 37 is connected to the drain hose 38. A foam jig is brought into contact with the front flange portion 39 and the back flange portion 40 of the above, and the foam insulation material 14 is injected and foamed, thereby forming the inner box at the back of the water tray and the bank 36 at the bottom of the water tray at the time of foaming. The deformation of the box 13 and the water receiving tray 34 can be prevented, and the positioning of the lower claw 35 is ensured, so that the refrigerator cooler 28 is mounted at a proper position. Therefore, defrosting efficiency and defrosting reliability are improved.
[0039]
Further, a convex portion 41 having a triangular horizontal cross section is provided on the inner surface of the water tray 34, and the height of the upper end surface of the convex portion 41 is substantially the same as the upper end of the front flange portion 39 of the water tray 34, or 5 to 5. The height is increased by 10 mm, and the foam heat insulating material 14 is injected and foamed in a state where the foam jig is in contact with the front flange portion 39, the back flange portion 40, and the upper end surface of the convex portion 41 of the water receiving tray 34, so that the foam jig is pressed down. The points are increased, and the deformation of the bottom surface of the water tray 34 can be reliably prevented.
[0040]
Further, by making the horizontal cross section of the convex portion 41 a triangular shape, drainage during defrosting is performed smoothly. In addition, the strength of the convex portion 41 can be increased by making the horizontal cross section triangular.
[0041]
In addition, by making a virtual line connecting the front flange portion 39 and the upper end surface of the convex portion 41 of the water receiving tray 34 on the surface in contact with the foaming jig with the bottom inclined shape of the water receiving tray 34, the front opening of the heat insulating box body The contact surface of the foaming jig on the back surface of the water tray 34 to be moved and fixed can be made wider, and the inner box deformation of the back surface of the water tray 34 can be reliably prevented.
[0042]
In addition, an upper end flange 42 is provided at the upper part on the back side of the water receiving tray 34, and the upper end height of the upper end flange 42 is higher than the upper end height of the front flange 39 of the water receiving tray 34, and the upper end flange 42 is in contact with the upper end flange 42. A concave portion 43 is provided on the box surface, the upper end flange portion 42 is arranged in the concave portion 43, and the upper end flange portion 42 and the inner box 13 are fixed with aluminum tape 44, so that the surface of the upper end flange portion 42 on the back surface of the water receiving tray 34 is formed. In addition, since the upper surface of the inner box can be made the same surface and can be securely pressed by the foaming jig, no special sealing member is required. Further, since the upper end height of the upper end flange portion 42 is higher than the upper end height of the front flange portion 39 of the water receiving pan 34, the foam jig on the back side of the water receiving pan which is moved and fixed from the front opening of the heat insulating box body. The contact surface can be made wider and the inner box deformation at the back of the water tray can be reliably prevented. Further, by fixing the upper flange portion 42 arranged in the concave portion 43 and the inner box 13 with the aluminum tape 44, it is possible to prevent water from entering between the inner surface of the water tray and the inner box during defrosting, Defrosting reliability is improved.
[0043]
Further, a space 44 is provided between a bank 36 provided in the inner box for mounting the water tray 34 and the lower surface of the water tray 34, and the height of the space 44 is adjusted by injecting foam insulation material and forming the inner box at the time of foaming. Since it is about 10 mm, which is a dimension capable of absorbing deformation, the bottom surface of the water tray 34 can be prevented from being deformed without foaming pressure being directly applied to the lower surface of the water tray 34 during foaming.
[0044]
Further, a lower surface flange 45 is provided in the left and right direction of the front lower surface of the water receiving tray 34, and a notch 46 is provided in the lower surface flange 45 near the drain pipe 37 so that the connection between the drain pipe 37 and the drain hose 38 can be confirmed. Because of this, it is possible to prevent water leakage in the refrigerator due to clogging of the connecting portion between the drain pipe 37 and the drain hose 38 when the heat insulating material is foamed, and the drainage reliability is improved.
[0045]
In addition, near the fixing member 35 for fixing the refrigerator compartment cooler 28, a lower cut-off rib 47 for blocking the flow of cold air to the portion having no fin on the side of the refrigerator is provided with the lowermost rib 47 of the refrigerator compartment cooler 28. By contacting the fins on the side surfaces or forming them so as to have a slight gap (1 to 5 mm), the flow of cold air is concentrated on the fins of the refrigerator cooler 28, thereby increasing the heat exchange efficiency. In addition, it is possible to prevent the formation of frost on a portion having no fin on the side surface of the cooler.
[0046]
Further, a resin-molded reinforcing plate 52 for reinforcing the vicinity of the inner box of an inlet pipe 49 connected to the inlet cooling pipe 48 of the refrigerator cooler 28 and an outlet pipe 51 connected to the outlet cooling pipe 50 is formed of the foamed heat insulating material 14. It is arranged in the inner box 13 before injection and foaming, and the reinforcing plate 52 is integrated with the upper plate 53 as a fixing member for fixing the inlet cooling pipe 48 or the outlet cooling pipe 50 of the refrigerator cooler 28. The connection pipe to the refrigerator compartment cooler 28 can be accommodated in a proper position by being formed from the inner surface of the refrigerator, and the heat insulating cover 30 that covers the front surface of the refrigerator compartment cooler 28 and forms an air passage is formed. Can be prevented, and a regular air path can be formed. In addition, it is possible to prevent generation of noise due to contact with the pipe.
[0047]
In addition, the reinforcing plate 52 is integrally formed with an upper blocking rib 54 for blocking the flow of cold air to a portion having no fin on the side surface of the refrigerator cooler 28, and the upper blocking rib 54 is formed by the heat insulating cover 30 and the refrigerator compartment. The upper cooling rib is formed so as to be in contact with the upper end fin of the cooling device or to a position having a slight gap, and the upper blocking rib is formed so as to have a slope descending from the side of the inner box toward the cooling room cooler. Therefore, it is possible to further reduce the flow of the cool air from the portion having no fin on the side surface of the cooler that has not been completely dehumidified, and it is possible to prevent frost formation around the refrigerator compartment fan 29. In addition, since the upper cut-off rib 54 is formed so as to have a slope descending from the inner box side to the refrigerator compartment cooler 28 side, drainage from the connection piping portion with the refrigerator compartment cooler 28 at the time of defrosting. It is done reliably.
[0048]
In this embodiment, the refrigerator for the refrigerator compartment having a refrigerator in each of the refrigerator compartment and the freezer compartment has been described, but the refrigerator for the refrigerator compartment can have a smaller depth dimension than the refrigerator in the freezer compartment. This is because, after the water tray is attached to the inner box in advance, the foamed heat insulating material is poured and the inner box or the water tray is easily deformed when foaming is performed. Accordingly, the present invention can be applied to the refrigerator for the freezer compartment as long as the inner box or the water tray can be prevented from being deformed, and the same operation and effect can be obtained.
[0049]
【The invention's effect】
As described above, the invention according to claim 1 provides a cooler and a lower part of the cooler in a heat insulating box made of an inner box, an outer box, and a foamed heat insulating material, and defrosts the cooler. In a refrigerator having a water tray for receiving water, a fixing member for fixing the cooler to the water tray while injecting and foaming the foamed heat insulating material after attaching the water tray to the inner box is provided. By restricting the mounting position of the water receiving tray, the positioning of the fixing member of the cooler provided on the water receiving tray is ensured, the proper mounting and installation of the cooler can be performed, and the defrosting efficiency and the defrosting reliability are improved.
[0050]
According to a second aspect of the present invention, in the first aspect of the present invention, a bank for mounting the water tray on the inner box is provided, and the bottom surface of the water tray is inclined toward the center to form a drain pipe. The drain pipe and the drain hose are connected, and a foaming jig is brought into contact with a front flange portion and a back flange portion of the water pan to inject and foam foam insulating material. Deformation of the inner box that forms the bank on the bottom of the box and the water pan and the water pan can be prevented, and the defrosting efficiency and defrosting reliability can be improved.
[0051]
According to a third aspect of the present invention, in the second aspect of the present invention, a convex portion is provided on a back surface of the water tray, and the height of the upper end surface of the convex portion is substantially the same as the front flange portion of the water tray. Alternatively, it is slightly upward, and a foaming jig is brought into contact with the front flange portion and the convex portion of the water tray to inject and foam foam insulating material, and the water tray is pressed by the front flange portion and the rear convex portion of the water tray. Deformation of the bottom surface can be reliably prevented, and defrosting efficiency and defrosting reliability are further improved.
[0052]
According to a fourth aspect of the present invention, in the invention according to the third aspect, an imaginary line connecting the front flange portion and the upper end surface of the water tray on the surface in contact with the foaming jig is formed by tilting the bottom surface of the water tray. The contact surface of the foaming jig at the back of the water tray fixed from the front opening of the heat insulating box can be made wider, and the inner box at the back of the water tray can be reliably prevented from being deformed.
[0053]
According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, an upper end flange portion is provided on an upper part of a back surface of the water receiving tray, and an upper end height of the upper end flange portion is provided. The height is higher than the height of the upper end of the front flange of the water pan, and a recess is provided on the inner box surface in contact with the upper flange, the upper flange is disposed in the recess, and the upper flange and the inner box are made of aluminum. It is fixed with tape and does not require a special sealing member around the water tray. In addition, the contact surface of the foaming jig at the back of the water tray, which is moved and fixed from the front opening of the heat insulating box, can be made wider, and the inner box at the back of the water tray can be reliably prevented from being deformed. In addition, by fixing the upper end flange portion disposed in the concave portion and the inner box with aluminum tape, it is possible to prevent water from entering between the inner surface of the water tray and the inner box during defrosting.
[0054]
According to a sixth aspect of the present invention, in the third or fourth aspect of the invention, the convex portion provided on the inner surface of the water tray has a triangular horizontal section, so that drainage during defrosting is smooth. It is performed in. In addition, the strength of the convex portion can be increased by making the horizontal cross section a triangular shape.
[0055]
According to a seventh aspect of the present invention, in the invention according to any one of the second to sixth aspects, a bank provided in the inner box for mounting the water tray and a lower surface of the water tray are provided. A space is provided between them, and the height of the space is set to a size capable of injecting foam insulation and absorbing inner box deformation at the time of foaming, so that foaming pressure is not directly applied to the lower surface of the water tray during foaming. Deformation of the bottom surface of the water tray can be prevented.
[0056]
The invention according to claim 8 is the invention according to any one of claims 2 to 7, wherein a lower surface flange is provided in the left-right direction of a lower surface of a front portion of the water receiving tray, and a drain pipe of the lower surface flange is provided. A notch is provided in the vicinity so that the connection between the drain pipe and the drain hose can be confirmed, and even if the heat insulating material leaks from the drain hose and the inner box connection part and the drain hose is clogged, the drain hose can be visually checked. Since the situation can be checked at a glance, it is possible to prevent water leakage in the refrigerator due to clogging of the heat insulating material, and the reliability of drainage is improved.
[0057]
According to a ninth aspect of the present invention, in the first aspect of the present invention, the fixing member for fixing the cooler is formed integrally with the water tray, so that the number of parts can be reduced and the cost can be reduced. Can be planned.
[0058]
According to a tenth aspect of the present invention, in the first aspect of the present invention, the flow of the cool air to a portion having no fin on the side surface of the cooler near the fixing member for fixing the cooler is blocked. The ribs are provided, and the heat exchange efficiency is increased by concentrating the flow of the cool air on the fins of the cooler. In addition, it is possible to prevent the formation of frost on a portion having no fin on the side surface of the cooler.
[0059]
According to an eleventh aspect of the present invention, in the invention according to any one of the first to tenth aspects, a reinforcing plate for reinforcing a vicinity of a pipe connected to an inlet or an outlet of a cooling pipe of a cooler is foamed. Insulation material is arranged in the inner box before foaming and foaming, and the reinforcing plate is provided with a fixing member for fixing a pipe connected to an inlet or an outlet of a cooling pipe of the cooler. The connection pipe can be accommodated in a proper position, the pipe can be prevented from hitting the heat insulating cover that forms the air path by covering the front surface of the cooler, and the proper air path can be formed. In addition, it is possible to prevent generation of noise due to contact with the pipe.
[0060]
According to a twelfth aspect of the present invention, in accordance with the eleventh aspect of the present invention, there is provided a heat insulating cover that covers the front surface of the cooler and forms an air passage, and the reinforcing plate has no fin on the side surface of the cooler. A rib for blocking the flow of cool air to the vicinity of the heat insulating cover and the upper end fin of the cooler is formed, so that frost formation around the refrigerator compartment fan 29 can be prevented.
[Brief description of the drawings]
FIG. 1 is a side sectional view of a refrigerator according to a first embodiment of the present invention.
FIG. 2 is a front view showing the vicinity of a refrigerator compartment cooler of the refrigerator according to the embodiment;
FIG. 3 is a perspective view of a main part near a refrigerator cooler of the refrigerator according to the embodiment;
FIG. 4 is a partial cross-sectional view taken along line AA of FIG. 3;
FIG. 5 is a view taken in the direction of arrow B in FIG. 3;
FIG. 6 is a side sectional view of a conventional refrigerator.
FIG. 7 is a perspective view of a conventional refrigerator around a cooler;
FIG. 8 is a side sectional view of a cooler holding portion of a conventional refrigerator.
[Explanation of symbols]
11 Refrigerator body
12 inner box
13 Outer box
14 Foam insulation
28 Refrigerator cooler
30 Insulation cover
34 water tray
35 Lower claws
36 Embankment
37 drainpipe
38 Drain hose
39 Front flange
40 Back flange
41 convex
42 Upper flange
43 recess
43a Aluminum tape
44 Space
45 Bottom flange
46 Notch
47 Lower cut-off rib
48 Inlet cooling pipe
49 Inlet piping
50 outlet cooling pipe
51 Outlet piping
52 Reinforcement plate
53 Upper claws
54 Upper cut-off rib

Claims (12)

内箱と外箱と発泡断熱材とよりなる断熱箱体の内部に冷却器および前記冷却器の下部に位置し前記冷却器の除霜水を受ける水受皿を有する冷蔵庫において、前記水受皿を前記内箱に取り付けた後、前記発泡断熱材を注入、発泡するとともに前記水受皿に前記冷却器を固定するための固定部材を設けた冷蔵庫。In a refrigerator having a water cooler and a water tray located at a lower portion of the cooler and receiving defrost water of the cooler inside an insulated box made of an inner box, an outer box, and foamed heat insulating material, A refrigerator provided with a fixing member for injecting and foaming the foamed heat insulating material after being attached to the inner box and fixing the cooler to the water receiving pan. 内箱に水受皿を載置する土手を設け、前記水受皿底面は中央部に向かい傾斜を設け排水管を形成し、前記排水管とドレンホースを連結させるとともに、水受皿の前面フランジ部と奥面フランジ部に発泡冶具を接して発泡断熱材を注入、発泡することを特徴とする請求項１に記載の冷蔵庫。A bank on which the water tray is placed is provided in the inner box, the bottom surface of the water tray is inclined toward the center to form a drain pipe, and the drain pipe and the drain hose are connected, and the front flange part of the water tray and the back are formed. The refrigerator according to claim 1, wherein a foaming jig is brought into contact with the face flange portion, and a foamed heat insulating material is injected and foamed. 水受皿の奥面に凸部を設け、前記凸部の上端面高さは前記水受皿の前面フランジ部と略同一もしくは若干上方とし、水受皿の前面フランジ部と凸部に発泡冶具を接して発泡断熱材を注入、発泡することを特徴とする請求項２に記載の冷蔵庫。A convex portion is provided on the back surface of the water tray, and the height of the upper end surface of the convex portion is substantially the same as or slightly above the front flange portion of the water tray, and a foam jig is in contact with the front flange portion and the convex portion of the water tray. The refrigerator according to claim 2, wherein a foamed heat insulating material is injected and foamed. 発泡冶具と接する面の水受皿の前面フランジ部および凸部上端面を結んだ仮想線を前記水受皿底面の傾斜形状と同一とすることを特徴とする請求項３に記載の冷蔵庫。The refrigerator according to claim 3, wherein an imaginary line connecting the front flange portion and the upper end surface of the convex portion of the water tray on the surface in contact with the foaming jig has the same shape as the inclined shape of the bottom surface of the water tray. 水受皿の奥面上部に上端フランジ部を有し、前記上端フランジ部の上端高さを水受皿の前面フランジ部の上端高さより高くするとともに、前記上端フランジ部に接する内箱面に凹部を設け、前記上端フランジ部を前記凹部に配置し、前記上端フランジ部と内箱をアルミテープで固定することを特徴とする請求項１から請求項４のいずれか一項に記載の冷蔵庫。An upper end flange portion is provided at an upper part on the back side of the water receiving tray, and an upper end height of the upper end flange portion is higher than an upper end height of the front flange portion of the water receiving tray, and a concave portion is provided on an inner box surface in contact with the upper end flange portion. The refrigerator according to any one of claims 1 to 4, wherein the upper end flange portion is disposed in the recess, and the upper end flange portion and the inner box are fixed with aluminum tape. 水受皿の奥面に設ける凸部は水平断面を三角形状としたことを特徴とする請求項３または４に記載の冷蔵庫。The refrigerator according to claim 3 or 4, wherein the convex portion provided on the inner surface of the water receiving tray has a triangular horizontal cross section. 水受皿を載置するために内箱に設けた土手と水受皿の下面との間に空間を設け、前記空間高さは発泡断熱材を注入、発泡時の内箱変形を吸収できる寸法としたことを特徴とする請求項２から請求項６のいずれか一項に記載の冷蔵庫。A space is provided between a bank provided in the inner box and a lower surface of the water tray for mounting the water tray, and the height of the space is set to a size capable of absorbing the deformation of the inner box during foaming by injecting foam insulation. The refrigerator according to any one of claims 2 to 6, wherein: 水受皿の前部下面の左右方向に下面フランジを設け、前記下面フランジの排水管近傍に切欠き部を設け前記排水管とドレンホースの連結を確認できるようにしたことを特徴とする請求項２から請求項７のいずれか一項に記載の冷蔵庫。3. The water receiving tray according to claim 2, wherein a lower surface flange is provided in the left-right direction of a lower surface of a front portion of the water receiving tray, and a notch portion is provided near a drain pipe of the lower surface flange so that connection between the drain pipe and a drain hose can be confirmed. The refrigerator according to any one of claims 1 to 7. 冷却器を固定するための固定部材を水受皿と一体に形成したことを特徴とする請求項１に記載の冷蔵庫。The refrigerator according to claim 1, wherein a fixing member for fixing the cooler is formed integrally with the water pan. 冷却器を固定するための固定部材の近傍に、冷却器側面のフィンを有しない部分への冷気の流れを遮断するリブを設けた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 a rib is provided near a fixing member for fixing the cooler, the rib blocking a flow of cool air to a portion having no fin on a side surface of the cooler. 冷却器の冷却パイプの入口あるいは出口に接続する配管近傍を補強する補強板を発泡断熱材の注入、発泡前に内箱に配設し、前記補強板には前記冷却器の冷却パイプの入口あるいは出口に接続する配管を固定する固定部材を設けたことを特徴とする請求項１から請求項１０のいずれか一項に記載の冷蔵庫。A reinforcing plate for reinforcing the vicinity of the pipe connected to the inlet or outlet of the cooling pipe of the cooler is provided in the inner box before the injection of the foamed heat insulating material and foaming, and the reinforcing plate is provided at the inlet of the cooling pipe of the cooler or The refrigerator according to any one of claims 1 to 10, further comprising a fixing member for fixing a pipe connected to the outlet. 冷却器の前面を覆い風路を形成する断熱カバーを有し、補強板には冷却器側面のフィンを有しない部分への冷気の流れを遮断するリブを前記断熱カバーと前記冷却器の上端フィン近傍まで形成したことを特徴とする請求項１１に記載の冷蔵庫。A heat insulating cover that covers the front surface of the cooler and forms an air passage; and a reinforcing plate includes a rib that blocks a flow of cool air to a portion having no fin on the side of the cooler, the heat insulating cover and an upper fin of the cooler. The refrigerator according to claim 11, wherein the refrigerator is formed up to the vicinity.

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