JP3571549B2

JP3571549B2 - refrigerator

Info

Publication number: JP3571549B2
Application number: JP30072498A
Authority: JP
Inventors: 宏吉村; 孝信打矢; 泰治大城; 善一井上; 覚長谷川
Original assignee: Sharp Corp
Current assignee: Sharp Corp
Priority date: 1998-10-22
Filing date: 1998-10-22
Publication date: 2004-09-29
Anticipated expiration: 2018-10-22
Also published as: JP2000130910A

Abstract

PROBLEM TO BE SOLVED: To realize delicate preservation of an article while preventing odor from spreading to other article preserved in other than an isolation chamber by arranging a vertical two stage case movably back and forth in the isolation chamber provided at the lower section of a refrigeration chamber and setting both cases in different time bands. SOLUTION: Chill is fed from a chiller 25 to a pressure chamber 28 by means of a fan 27 of a blower 26 and then fed to a lower case 10 through a lower case chill inlet 14 located closely to the chill distribution chamber 15 of a refrigerator chill distribution passage 16a. It is also delivered to a refrigeration chamber 2 from a plurality of refrigeration chamber chill inlets 17 and the remaining chill is fed to an upper case 7 from an upper case chill inlet 13. Furthermore, a part of chill fed to the upper and lower cases 7, 10 passed between the outside of case side face and the side wall 9 of an isolation chamber 4 along with odor in the case. Since the temperature of chill is lower in the lower case 10 than in the upper case 7, the chill does not flow back upward thus preventing upward transfer of odor.

Description

【０００１】
【発明の属する技術分野】
本発明は、冷蔵室の下部に隔離室を持つ冷蔵庫に関するものである。
【０００２】
【従来の技術】
従来のこの種の冷蔵庫は、特許第２６９８５６６号公報に開示されているように、冷蔵室の下部に隔離室（貯蔵室）を構成するケース（収納容器）を設けてなるものがあり、また、特開平２−２４２０６２号公報に開示されているように、一つの独立室（チルド室）内にケース（チルドケース）を縦に複数個配設してなるものもある。
【０００３】
【発明が解決しようとする課題】
上記のような従来の冷蔵庫では、特許第２６９８５６６号公報に開示のものにあっては、冷蔵室の下部に設けた隔離室内のケースが単独であるため、ケース内温度も設定された値のみに限られ、また、特開平２−２４２０６２号公報に開示のものにあっては、複数個のケース（チルドケース）内に送り込まれる各々の冷気は温度調節器にてコントロールされたチルド食品を保存するための同一温度の冷気であり、ケース内に貯蔵される多種の貯蔵物に対して、必ずしも適当な温度での貯蔵ができないという課題がある。また、特に魚などの臭いの強い生鮮食品を同時に貯蔵すると、隔離室内のケースが単独である場合、その臭いが同じケース内の他の貯蔵物に移ってしまうという課題もある。さらに、ケースを複数個設けたものであっても、上段のケースに臭いの強い生鮮食品等を貯蔵した場合、冷気がケース側壁の外側を通り下段に下りるため、その臭いが他の貯蔵物に移ってしまうという課題もある。
【０００４】
【課題を解決するための手段】
本発明の冷蔵庫は上記のような課題を解決したもので、冷蔵室の下部に配された隔離室内に前後方向へ移動可能な上下に二段の上ケース及び下ケースを設け、前記下ケースが前記上ケースの底面外側に臨んで開口するとともに、前記下ケース内の温度を前記上ケース内の温度よりも低い温度にしたことを特徴としている。この構成によると、隔離室内の上下２段のケース内温度が異なる温度帯に保たれ、所定の温度で保存する貯蔵物を収納するためのケースと、それよりさらに低温で保存する貯蔵物を収納するためのケースとが隔離室内に得られるため、簡単な構造で貯蔵物の臭いが隔離室以外の他の貯蔵物に移りにくく乾燥のしにくい、新鮮な魚や肉等の鮮度の落ちにくい、さらには、各々の貯蔵物にいっそう適した温度帯をもつ、きめ細かな貯蔵物の保存が可能となる冷蔵庫が得られる。
【０００５】
また、ケース内の冷気の一部がケースの側面外側と隔離室側壁との間を上方から下方へケース内の臭いとともに流れても、温度の低い下ケースに特に魚などの臭いの強い生鮮食品を収納したとき、その魚などの強い臭いは上方へは流れにくく、上ケース内の貯蔵物へ上記下ケース内の貯蔵物の強い臭いが移りにくい隔離室をもつ冷蔵庫が得られる。
【０００６】
また本発明は上記構成の冷蔵庫において、前記冷蔵室の後方下方に設けられた冷気分配室から前記冷蔵室背面を上方に延びた冷蔵室冷気分配通路と、前記隔離室に形成されるとともに前記上ケース及び前記下ケースにそれぞれ冷気を吹出す上ケース冷気吹出口及び下ケース冷気吹出口とを備え、前記冷気分配室から流出した直後の冷気を前記下ケース冷気吹出口から吹出し、前記冷蔵室冷気分配通路を流通した後の冷気を前記上ケース冷気吹出口から吹出したことを特徴としている。この構成によると、下ケース冷気吐き出し口からは冷気分配室から出た直後の低温の冷気が下ケース内へ吐き出され下ケース内温度を低温に保ち、また、上ケース冷気吐き出し口からは冷気分配室から出た後、冷蔵室に設けられた冷蔵室冷気分配通路を通ったことにより、冷蔵室内の熱を吸収し少し温度の上昇した冷気が上ケース内へ適度に吐き出されるため、下ケース内温度は簡単な構造で効率よく上ケース内温度よりも更に低く保つことができる隔離室をもつ冷蔵庫が得られる。
また本発明は上記構成の冷蔵庫において、前記冷蔵室冷気分配通路は、前記冷蔵室背面の中央部を上方に延び、前記冷蔵室上部で屈曲して前記冷蔵室背面の両側部を下方に延びることを特徴としている。
【０００７】
また本発明は上記構成の冷蔵庫において、前記上ケースの底面外側を前面仕切部よりも上方に配置するとともに前記下ケース冷気吹出口を前記冷気分配室の近傍に設け、前記上ケース冷気吹出口を前記下ケース冷気吹出口よりも後方に配置したことを特徴としている。この構成によると、上ケースの底面外側は前面仕切部より上方にあり、上ケース吐き出し口は下ケース吐き出し口より後方にあるため、ケースの隔離室からの取り出しに関係なく上ケースの背面壁は下ケースの背面壁より後方に設けられ、ケースの隔離室からの取り出しが可能で、ケースの収納容積が増した上ケースを隔離室にもつ冷蔵庫が得られる。
【０００８】
また本発明は上記構成の冷蔵庫において、前記下ケース冷気吹出口は左右に冷気を拡散するための冷気ガイドを有することを特徴としている。この構成によると、冷気分配室の近くに設けられた略中央にある下ケース冷気吐き出し口から、左右方向に冷気が拡散されて下ケース内へ送り込まれるようになり、巾広い下ケース内にある貯蔵物を効率よく低温で均一に冷却できる隔離室をもつ冷蔵庫が得られる。
【０００９】
また本発明は上記構成の冷蔵庫において、前記冷気ガイドは前記隔離室背面側を断熱する通路断熱に傾斜して形成されたダクト部から成ることを特徴としている。この構成によると、隔離室内に飛び出した余分に場所を取る冷気ガイドを設けなくても、下ケース内へ均一に冷気を送り込むことができ、下ケースの容積が大きくとれ、容積効率のよい下ケースの貯蔵物を均一に冷却できる隔離室をもつ冷蔵庫が得られる。
【００１０】
また本発明は上記構成の冷蔵庫において、前記下ケースの底面外側を前面仕切部上面よりも下方に配置し、前記下ケースの側面上端の一部に前記下ケースの前方上端よりも低い面を有する凹部を設けたことを特徴としている。この構成によると、上ケースの底面外側と下ケースの上端との間の隙間が少なくでき容積効率がよくなり、貯蔵物を多量に収納できるとともに、凹部からも冷気が下ケースの側面外側へ流れ出やすくなるため、隙間を少なくしたことによる流量抵抗の増大がこの部で減少し冷気流量が増し、効率よくよりいっそう低温に貯蔵物を冷却できる隔離室をもつ冷蔵庫が得られる。
【００１１】
【発明の実施の形態】
以下、本発明の冷蔵庫の実施の形態を図面とともに説明する。
【００１２】
図１は本発明による冷蔵庫の本体の側面から見た要部断面図、図２は冷気分配器からでた冷気を隔離室および冷蔵室に導く冷蔵室冷気分配通路をもつ冷蔵室通路組品付近の正面図、図３は図２に示す下ケース吐き出し口付近のＡ−Ａ線の要部断面図、図４は上ケースを前方へ引き出したときの要部断面図、図５は下ケースを前方へ引き出したときの要部断面図である。
【００１３】
図１において、１は冷蔵庫本体、２は冷蔵室、３は野菜室、４は前記冷蔵室２の下部に設けられた隔離室、５は上記冷蔵室２と野菜室３との間に設けた仕切部である。６は前面仕切部、７は隔離室４の上部に納まる上ケースである。８は上記上ケース７の側面外側に設けられた上ケースガイドであり点線で描いている。９ａおよび９ｂは、隔離室側壁９に各々設けられた側壁ガイドで、上ケースガイド８を上下より挟み込んでおり、９ａは上部側壁ガイドウエ、９ｂは上部側壁ガイドシタで、各々を２点鎖線で描いている。
【００１４】
なお、上ケースガイド８，上部側壁ガイドウエ９ａ，上部側壁ガイドシタ９ｂは上ケース７を前後方向に移動可能にし、その動きを導いている。また、上ケースガイド８の下面前方には上ケース７が隔離室４へ収納されるとき、収納完了直前に自動的に上ケース７の自重で収納できるよう、上ケースガイド傾斜面８ａを設けている。
【００１５】
また、１０は隔離室４の下部に納まる下ケースである。１１は前記下ケース１０の側面外側に設けられた下ケースガイドであり点線で描いている。９ｃおよび９ｄは、隔離室側壁９に各々設けられた側壁ガイドで、下ケースガイド１１を上下より挟み込んでおり、９ｃは下部側壁ガイドウエ、９ｄは下部側壁ガイドシタで各々を２点鎖線で描いている。
【００１６】
なお、下ケースガイド１１，下部側壁ガイドウエ９ｃ，下部側壁ガイドシタ９ｄは下ケース１０を前後方向に移動可能にし、その動きを導いている。また、下ケースガイド１１の下面前方には下ケース１０が隔離室４へ収納されるとき、収納完了直前に自動的に下ケース１０の自重で収納できるよう、下ケースガイド傾斜面１１ａを設けている。
【００１７】
１２は隔離室４の天井の働きをするケース棚で、１３は上ケース７内に冷気を吐き出すための上ケース冷気吐き出し口、１４は下ケース１０内に冷気を吐き出すための下ケース冷気吐き出し口である。なお、本図では上ケース冷気吐き出し口１３および下ケース冷気吐き出し口１４を同一断面図にあらわすため、上ケース冷気吐き出し口１３および下ケース冷気吐き出し口１４を通る位置で切断して描いている。
【００１８】
１５はダンパー１５ａを備えた冷気分配室で本図ではダンパー１５ａは分配室入り口１５ｂを閉じた状態を表わしている。なお、ダンパー１５ａの点線部分はダンパー１５ａが開いたときの状態を表している。１６は冷気分配室１５から吐き出された冷気を冷蔵室２および隔離室４に送るための冷蔵室冷気分配通路１６ａと断熱のための通路断熱１６ｂと保護カバーの通路カバー１６ｃをもつ冷蔵室通路組品で、上ケース冷気吐き出し口１３、下ケース冷気吐き出し口１４、および冷蔵室冷気吐き出し口１７をもっている。
【００１９】
なお、１８は冷蔵室扉であり、冷蔵室扉１８の扉背面部にドアポケット１９・２０をもっている。２１は野菜室扉、２２は野菜ケースでドアアングル（図示せず）にて野菜室扉２１に取り付けられている。２３は小物ケースで、野菜ケース２２の上部に取り付けられている。
【００２０】
２４は野菜室カバーで、野菜ケース２２および小物ケース２３の上方に位置し、野菜ケース２２および小物ケース２３を所定の湿度に保つように配慮されている。なお、２５は冷却器、２６はファン２７をもつ送風機組品で、２８は冷気分配室１５に通じる圧力室である。
【００２１】
そして、冷却器２５で冷却された冷気は、送風機２６のファン２７で圧力室２８に送られる。その後、圧力室２８から冷凍室（図示せず）に冷気が送り込まれる。また、冷蔵室２に設けられた温度感知部（図示せず）にて冷蔵室２の室温を感知し、室温が所定の温度より高くなったとき冷気分配室１５のダンパー１５ａが開き、圧力室２８から分配室入り口１５ｂを通り冷気分配室１５へ入った冷気は冷蔵室冷気分配通路１６ａへ送られる。
【００２２】
その後、冷気は冷蔵室冷気分配通路１６ａの冷気分配室１５に近い位置に設けられた下ケース冷気吐き出し口１４を通り下ケース１０へ送られるとともに、冷蔵室冷気分配通路１６ａを通りながら複数個の冷蔵室冷気吐き出し口１７から冷蔵室２に吐き出され、残りの冷気は上ケース冷気吐き出し口１３から上ケース７に送り込まれる。
【００２３】
上ケース７に送り込まれた冷気は上ケース７内の貯蔵物を冷却し、その前方上端７ａとケース棚１２との間の隙間７ｂから冷蔵室２へ流れ出す。その後、隙間７ｂから流れ出た冷気は冷蔵室２の上方から降りて来る比較的暖かい冷気と混ざり合い下方へ降りて行く。
【００２４】
このとき、上ケース７へ送り込まれる冷気（例えば冷気温度＝１℃）は、冷蔵室冷気分配通路１６ａを通った後に上ケース冷気吐き出し口１３から吐き出されるため、冷蔵室冷気分配通路１６ａを通っている間に冷蔵室２内の熱の一部を冷気が吸収するので、冷蔵室２内の温度（例えば３℃）よりは低いが、下ケース１０へ送り込まれる冷気（例えば冷気温度＝−１℃）である冷気分配室１５から冷蔵室冷気分配通路１６ａに送り込まれた直後の冷気よりは高くなっている。
【００２５】
また、上ケース冷気吐き出し口１３から上ケース７に送り込まれる冷気の量を、上ケース７内の温度が冷蔵室２より低い温度に保たれるように、各々の吐き出し口の開口面積等で冷気吐出量は調整されている。
【００２６】
下ケース１０に送り込まれた冷気は下ケース１０内の貯蔵物を冷却し、その前方上端１０ａと上ケース７の底面外側との間の隙間１０ｂから冷蔵室２へ流れ出す。その後、上ケース７の前方から降りて来る比較的暖かい冷気と混ざり合い、下ケース１０の底面外側と仕切部５の間の空間を通り、仕切部５の一部に設けられた仕切開口部５ａを通って野菜室３に流れ込む。
【００２７】
下ケース１０へは冷気分配室１５から流れ出た直後の外部からの熱の吸収の少ない冷気が下ケース冷気吐き出し口１４を通り適量流れ込むため上ケース７より低い温度に効率よく保たれ、上ケース７内温度と下ケース１０内温度は互いに異なる温度帯（例えば上ケース７内温度＝２±１℃ 下ケース１０内温度＝０±１℃）になる。
上ケース７および下ケース１０に送り込まれた冷気の一部は、ケースの側面上端から漏れ出して、各々のケースの側面外側と隔離室側壁９との間を上方から下方へケース内の臭いとともに流れる。このとき、上ケース７より下ケース１０の冷気の温度が低いため、各々のケースの側面外側と隔離室側壁９との間の冷気流は上方へ逆向することなく下ケース１０の底面外側と仕切部５との間に流れ込む。そのため、上ケース７より温度の低い下ケース１０に臭いの強い魚などの生鮮食品を収納したとき、その魚などの強い臭いは上方へは逆行しにくく、上ケース７への下ケース１０の強い臭いが移りにくいことになる。
【００２８】
野菜室３に流れ込んだ冷気は仕切部５と野菜室カバー２４で形成された冷気通路を通り、野菜ケース２２と野菜室扉２１の扉背面との間を通った後、野菜ケース２２の底面外側へ達する。その後冷気は野菜ケース２２の底面外側を通り野菜室３からダクト（図示せず）にて冷却器２５の下方へ戻る。なお、図中矢印は冷気の流れをあらわす。
【００２９】
室内温度にあまり差のない冷蔵室２と野菜室３が上下に隣り合って設けられているため、仕切部５の断熱層の厚さは薄くてもよく、室内容積の有効利用のため仕切部５は上に凹の形状にしてその凹部に下ケース１０が入り込み、下ケース１０の底面外側は前面仕切部６の上面より下方に位置している。また、上ケース７の底面外側は下ケース１０の高さ確保のため前面仕切部６より上方になるように設けている。
【００３０】
冷気分配室１５はダンパー１５ａの大きさの関係から、左右方向の巾はあまり大きくとれず、通風面積を確保するため前後方向で大きく巾を取っている。そのため、冷気分配室１５から冷蔵室冷気分配通路１６ａへ通じる冷気通路も通風効率を下げないために、前後方向で同様の巾を取る必要があり、さらには、冷気分配室１５に近い下ケース冷気吐き出し口１４も同様に冷気通路を確保するため、前方へ出た所に位置することになる。
【００３１】
上ケース冷気吐き出し口１３は冷気分配室１５から離れた所の冷蔵室冷気分配通路１６ａにあり、その付近の冷蔵室冷気分配通路１６ａは左右方向の通路巾が大きくとれ、前後方向には巾が少なくてもよい。そのため、上ケース冷気吐き出し口１３の前後方向の位置は下ケース冷気吐き出し口１４の位置より後方に設けることができる。
【００３２】
また、上ケース７の底面外側は前面仕切部６より上方にあるため、上ケース７の隔離室４からの取り出しに関係なく上ケース７の背面壁７ｂは下ケース１０の背面壁１０ｂより後方に設けることができる。これらのため、上ケース７の隔離室４からの取り出しが可能でケースの収納容積の増した上ケース７が得られることになる。
【００３３】
なお、上記左右方向とは、冷蔵庫を正面から見て左右の方向を意味し、前後方向とは、冷蔵庫を正面から見て前後の方向を意味する。
【００３４】
図２において、冷気分配室１５から冷蔵室冷気分配通路１６ａ（点線にて表示）の下方に送られた冷気は送風機２６のファン２７によって生じた圧力により左右の２つの通路に分かれ冷蔵室冷気分配通路１６ａ内を上方に押し上げられる。その後、左右の２つの通路を冷蔵室２の上端近くまで押し上げられた冷気は左右に反転する通路に導かれ冷蔵室冷気分配通路１６ａ内を通り冷蔵室２の下方に下がり冷蔵室冷気分配通路１６ａの最後にある上ケース冷気吐き出し口１３まで冷気は降りてくる。
【００３５】
この間、冷気はその一部を下ケース冷気吐き出し口１４から下ケース１０へ送り出され、各々の冷蔵室冷気吐き出し口１７から冷蔵室２へ送り出された後、残りの冷気は上ケース冷気吐き出し口１３から上ケース７へ送り出される。なお、図中矢印は冷気の流れをあらわす。
【００３６】
通路カバー１６ｃの冷蔵室冷気吐き出し口１７に相当する開口部は内部に貯蔵物等が入り込まないようにスリット状にしてある。また、１６ｃには冷蔵室２内の室温を感知する温度感知部２９が設けられており、その上方の冷蔵室冷気吐き出し口１７からの冷気が温度感知部２９に直接当たらないようにリブ状のひさし３０が設けられている。また、３１はランプカバーで、その裏側には冷蔵室２内を照らすランプ（図示せず）が設けられている。
【００３７】
図３において、下ケース１０へは冷気分配室１５から流れ出た直後の冷気が下ケース冷気吐き出し口１４から適量流れ込むようになっているため、冷蔵室冷気分配通路１６ａの左右方向の巾は冷気分配室１５のダンパー１５ａの大きさの関係からあまり広くできず、また、下ケース冷気吐き出し口１４は左右方向の略中央の限られた位置に設けることになる。
【００３８】
そのため、巾の広い下ケース１０内へ均一に冷気を送り込むように、通路断熱１６ｂの下ケース冷気吐き出し口１４を左右２個所に設け通路断熱１６ｂの下ケース冷気吐き出し口１４を冷気が通過中に左右に広がるように、冷気ガイドとして下ケース冷気吐き出し口１４のダクト部１４ａを左右方向に斜めに傾けている。こうすることにより、通路カバー１６ｃの前方に隔離室４側へ突き出て左右に傾斜した余分に場所を取る傾斜グリルを設けなくても、簡単な構造で下ケース１０内へ均一に冷気を送り込むことが可能となり、下ケース１０内の貯蔵物を効率よく冷却できる。なお、図中矢印は冷気の流れをあらわす。
【００３９】
なお、ダクト部１４ａの通路は、開口面積を充分取れるのであれば、ダクトの内部に冷気ガイドのための風向板を設けると、いっそう効率よく冷気を案内できることは明白である。
【００４０】
図４において、上ケース７の前方に位置する上ケース取っ手部７ｃを下方から指をかけ、上ケースガイド８の上ガイド下部突起部８ｂが、上部側壁ガイドシタ９ｂの上ガイドシタ上部突起部９ｃに当たるまで、前方に引き出される。通常はこの状態で上ケース７の中にある貯蔵物の出し入れが行われる。
【００４１】
上ケース７の底面外側は前面仕切部６より上方にあるため、上ケース７の隔離室４からの取り出しは、前面仕切部６に関係なく上ケース取っ手部７ｃを下方から指をかけ上ガイド下部突起部８ｂが上ガイドシタ上部突起部９ｃを乗り越すように上方に引き上げながら手前に引き出すことにより可能となる。このとき、上ケース７の側面上端７ｄがケース棚１２に当たらないように部分的に低くしてある。
【００４２】
図５において、下ケース１０の前方に位置する下ケース取っ手部１０ｃを上方から指をかけ、下ケースガイド１１の下ガイド下部突起部１１ｂが、下部側壁ガイドシタ９ｄの下ガイドシタ上部突起部９ｅに当たるまで、前方に引き出される。通常はこの状態で下ケース１０の中にある貯蔵物の出し入れが行われる。
【００４３】
下ケース１０の底面外側は前面仕切部６の上面より下方にあるため、下ケース１０の隔離室４からの取り出しは、下ケース取っ手部１０ｃを下方から指をかけ下ガイド下部突起部１１ｂが下ガイドシタ上部突起部９ｅを乗り越すように上方に引き上げながら手前に引き出すことにより可能となる。
【００４４】
このとき、下ケース１０の底面外側の前端は、仕切部５の上面に当たらない位置となっており、また、下ケース１０の側面上端１０ｄの一部に上ケース７が当たらないよう部分的に低い凹部１０ｅが設けられている。なお、下ケース取っ手部１０ｃを上方に引き上げたときの図を点線で描いている。
【００４５】
前記凹部１０ｅが下ケース１０に設けられているため、上ケース７と下ケース１０との間の隙間が少なくでき収納容積の効率がよくなり、貯蔵物を多量に収納でき、凹部１０ｅからも冷気が下ケース１０の側面外側へ流れでやすくなるため、この付近の流量抵抗が減少し冷気流が増し、下ケース１０は効率よくよりいっそう低温に貯蔵物を冷却できるようになる。
【００４６】
なお、上ケース７と下ケース１０との間の隙間が少ないとき、下ケース１０内の冷却状態の悪い付近の前方上端１０ａや側面上端１０ｄに貯蔵物がはみ出さない程度の巾の凹部を設けることにより、その付近の冷気流を多くし冷却状態が改善でき、また、流量抵抗が減少し送風効率が上がることは明白である。
【００４７】
【発明の効果】
本発明は、冷蔵室の下部に配された隔離室内に前後方向へ移動可能な上下に二段の上ケース及び下ケースを設け、下ケース内の温度を上ケース内の温度よりも低い温度にしたので、簡単な構造で貯蔵物の臭いが隔離室以外の他の貯蔵物に移りにくく乾燥のしにくい、新鮮な魚や肉等の鮮度の落ちにくい、さらには、各々の貯蔵物にいっそう適した温度帯をもつ、きめ細かな貯蔵物の保存が可能となる冷蔵庫が得られる。
【００４８】
また、温度の低い下ケースに特に魚などの臭いの強い生鮮食品を収納したとき、上ケース内の貯蔵物へ下ケース内の貯蔵物の強い臭いが移りにくい隔離室をもつ冷蔵庫が得られる。
【００４９】
また本発明によると、冷気分配室から流出した直後の冷気を下ケース冷気吹出口から吹出し、冷蔵室冷気分配通路を流通した後の冷気を上ケース冷気吹出口から吹出したので、下ケース内温度は簡単な構造で効率よく上ケース内温度よりも更に低く保つことができる隔離室をもつ冷蔵庫が得られる。
【００５０】
また本発明によると、上ケースの底面外側を前面仕切部よりも上方に配置するとともに下ケース冷気吹出口を前記冷気分配室の近傍に設け、上ケース冷気吹出口を下ケース冷気吹出口よりも後方に配置したので、ケースの隔離室からの取り出しに関係なく上ケースの背面壁は下ケースの背面壁より後方に設けられ、ケースの隔離室からの取り出しが可能で、ケースの収納容積が増した上ケースを隔離室にもつ冷蔵庫が得られる。
【００５１】
また本発明によると、下ケース冷気吹出口は左右に冷気を拡散するための冷気ガイドを有するので、冷気分配室の近くに設けられた略中央にある下ケース冷気吐き出し口から、左右方向に冷気が拡散されて下ケース内へ送り込まれるようになり、巾広い下ケース内にある貯蔵物を効率よく低温で均一に冷却できる隔離室をもつ冷蔵庫が得られる。
【００５２】
また本発明によると、冷気ガイドは通路断熱に形成されたダクト部から成るので、隔離室内に飛び出した余分に場所を取る冷気ガイドを設けなくても、下ケース内へ均一に冷気を送り込むことができ、下ケースの容積が大きくとれ、容積効率のよい下ケースの貯蔵物を均一に冷却できる隔離室をもつ冷蔵庫が得られる。
【００５３】
また本発明によると、下ケースの底面外側を前面仕切部上面よりも下方に配置し、ケースの側面上端の一部に下ケースの前方上端よりも低い面を有する凹部を設けたので、上ケースの底面外側と下ケースの上端との間の隙間が少なくでき容積効率がよくなり、貯蔵物を多量に収納できるとともに、凹部からも冷気が下ケースの側面外側へ流れ出やすくなるため、隙間を少なくしたことによる流量抵抗の増大がこの部で減少し冷気流量が増し、効率よくよりいっそう低温に貯蔵物を冷却できる隔離室をもつ冷蔵庫が得られる。
【図面の簡単な説明】
【図１】本発明の冷蔵庫の実施の形態を示す本体の側面から見た要部断面図である。
【図２】本発明の冷蔵庫の実施の形態を示す冷気分配器からでた冷気を隔離室および冷蔵室に導く冷蔵室冷気分配通路をもつ冷蔵室通路組品付近の正面図である。
【図３】図２に示す下ケース吐き出し口付近のＡ−Ａ線の要部断面図である。
【図４】本発明の冷蔵庫の実施の形態を示す上ケースを前方へ引き出したときの要部断面図である。
【図５】本発明の冷蔵庫の実施の形態を示す下ケースを前方へ引き出したときの要部断面図である。
【符号の説明】
２冷蔵室
４隔離室
６前面仕切部
７上ケース
１０下ケース
１０ｅ凹部
１３上ケース吐き出し口
１４下ケース吐き出し口
１４ａダクト部
１５冷気分配室
１６ａ冷蔵室冷気分配通路
１６ｂ通路断熱[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a refrigerator having an isolation room at a lower part of a refrigerator room.
[0002]
[Prior art]
As disclosed in Japanese Patent No. 2698566, this type of conventional refrigerator is provided with a case (storage container) that constitutes an isolation room (storage room) below the refrigerator compartment. As disclosed in Japanese Patent Application Laid-Open No. 2-242062, there is a case where a plurality of cases (chilled cases) are vertically arranged in one independent room (chilled room).
[0003]
[Problems to be solved by the invention]
In the conventional refrigerator as described above, in the refrigerator disclosed in Japanese Patent No. 2698566, since the case in the isolation room provided at the lower part of the refrigerator compartment is single, the temperature in the case is also limited to the set value. In the case disclosed in Japanese Patent Application Laid-Open No. Hei 2-242062, each cold air sent into a plurality of cases (chilled cases) stores chilled foods controlled by a temperature controller. Therefore, there is a problem that it is not always possible to store at a proper temperature with respect to various kinds of storage materials stored in a case because the air is cold at the same temperature. In addition, when fresh foods with a strong smell such as fish are stored at the same time, there is also a problem that, when the case in the isolation room is a single case, the smell is transferred to another storage in the same case. Furthermore, even if a plurality of cases are provided, when fresh foods with a strong smell are stored in the upper case, the cool air goes down to the lower stage through the outside of the case side wall, so that the smell may be stored in other storage items. There is also the problem of moving.
[0004]
[Means for Solving the Problems]
The refrigerator of the present invention has solved the above-described problems, and has an upper and lower two-stage upper and lower cases movable in the front-rear direction in an isolated room arranged at the lower part of the refrigerator compartment , wherein the lower case is provided. An opening is provided facing the outside of the bottom surface of the upper case, and the temperature in the lower case is lower than the temperature in the upper case . According to this configuration, the temperature in the upper and lower two-stage case in the isolation room is kept at different temperature zones, and the case for storing the storage items stored at a predetermined temperature and the storage item for storing the storage items at a lower temperature than the case are stored. And the case to be obtained in the isolation room, the odor of the stored material is not easily transferred to other storages other than the isolated room with a simple structure, it is difficult to dry, the freshness of fresh fish and meat is hardly reduced, and Thus, a refrigerator having a temperature zone more suitable for each of the stored items and capable of storing finely stored items can be obtained.
[0005]
Even if a part of the cool air inside the case flows from above to below between the outside of the side surface of the case and the side wall of the isolation chamber together with the smell inside the case, fresh foods with strong smell such as fish, especially in the lower case where the temperature is low. When stored, the strong odor of the fish or the like is unlikely to flow upward, and a refrigerator having an isolated room where the strong odor of the storage material in the lower case is difficult to transfer to the storage material in the upper case.
[0006]
The present invention also relates to a refrigerator having the above-described structure, wherein a refrigerator air distribution passage extending upward from the cold air distribution chamber provided at the rear lower portion of the refrigerator compartment to the refrigerator compartment rear surface, An upper case cold air outlet and a lower case cold air outlet for blowing cold air to the case and the lower case, respectively, and the cool air immediately after flowing out of the cold air distribution chamber is blown out from the lower case cool air outlet, and the cold room cold air is blown out. The cool air after flowing through the distribution passage is blown out from the upper case cool air outlet. According to this configuration, low-temperature cold air immediately after exiting the cold air distribution chamber is discharged from the lower case cold air discharge port into the lower case to keep the temperature in the lower case low, and cool air is distributed from the upper case cold air discharge port. After exiting the compartment, it passed through the refrigerator compartment cold air distribution passage provided in the refrigerator compartment, absorbing the heat inside the refrigerator compartment and discharging the slightly elevated temperature cool air into the upper case. A refrigerator having an isolated room that can efficiently maintain the temperature even lower than the temperature in the upper case with a simple structure can be obtained.
Further, in the refrigerator having the above-described structure, in the refrigerator having the above-described configuration, the refrigerator air distribution passage may extend upward at a central portion of the rear surface of the refrigerator, bend at an upper portion of the refrigerator, and extend downward at both sides of the rear surface of the refrigerator. It is characterized by.
[0007]
The present invention, in the refrigerator structured as described above, provided the lower case cold air outlet in the vicinity of the cool air distribution chamber with placing a bottom outer side of the upper case above the front partition portion, said upper case cold air outlet It is characterized in that arranged in the rear than the lower case cold air outlet. According to this configuration, the bottom outside of the upper case is above the front partition, and the upper case discharge port is behind the lower case discharge port. The refrigerator is provided behind the rear wall of the lower case and can be taken out of the isolated room, and the upper case in the isolated room has an increased storage capacity.
[0008]
The present invention, in the refrigerator structured as described above, the lower case cold air outlet is characterized by having a cool air guide for diffusing cold air to the left and right. According to this configuration , the cool air is diffused in the left-right direction and is sent into the lower case from the lower case cool air discharge port located substantially at the center provided near the cool air distribution chamber, and is located in the wide lower case. A refrigerator having an isolated room capable of efficiently and uniformly cooling the stock at a low temperature is obtained.
[0009]
Further, the present invention is characterized in that in the refrigerator having the above-mentioned configuration, the cold air guide is formed of a duct portion which is formed so as to be inclined for heat insulation of a passage which insulates the back side of the isolation chamber . According to this configuration, it is possible to uniformly feed the cool air into the lower case without providing a cool air guide that takes extra space that protrudes into the isolated room, the lower case has a large volume, and the lower case has good volume efficiency. Refrigerator having an isolated room capable of uniformly cooling the stored product is obtained.
[0010]
The present invention, in the refrigerator structured as described above, the bottom surface outside of the lower case is disposed below the front partition part top, has a lower surface than the front upper end of the lower case part of the side surface upper end of the lower case It is characterized in that a concave portion is provided . According to this configuration, the gap between the outer bottom surface of the upper case and the upper end of the lower case can be reduced to improve the volumetric efficiency, and a large amount of storage can be stored, and cool air flows out of the concave portion to the outer side surfaces of the lower case. As a result, the increase in flow resistance due to the reduced gap is reduced at this point, the flow rate of cold air is increased, and a refrigerator having an isolated room that can efficiently cool the stored material at a lower temperature can be obtained.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the refrigerator of the present invention will be described with reference to the drawings.
[0012]
FIG. 1 is a cross-sectional view of a main part of a refrigerator body according to the present invention, as viewed from the side, and FIG. FIG. 3 is a cross-sectional view of a main part taken along the line AA near the discharge outlet of the lower case shown in FIG. 2, FIG. 4 is a cross-sectional view of the main part when the upper case is pulled out forward, and FIG. It is principal part sectional drawing at the time of pulling out front.
[0013]
In FIG. 1, 1 is a refrigerator main body, 2 is a refrigerator room, 3 is a vegetable room, 4 is an isolation room provided below the refrigerator room 2, and 5 is provided between the refrigerator room 2 and the vegetable room 3. It is a partition. Numeral 6 denotes a front partition, and numeral 7 denotes an upper case that fits in the upper part of the isolation chamber 4. Reference numeral 8 denotes an upper case guide provided outside the side surface of the upper case 7 and is drawn by a dotted line. Reference numerals 9a and 9b denote side wall guides provided on the side wall 9 of the isolation chamber, sandwiching the upper case guide 8 from above and below. 9a is an upper side wall guideway, 9b is an upper side wall guide sita, and each is drawn by a two-dot chain line. I have.
[0014]
The upper case guide 8, the upper side wall guideway 9a, and the upper side wall guide shifter 9b enable the upper case 7 to move in the front-rear direction, and guide the movement. An upper case guide inclined surface 8a is provided in front of the lower surface of the upper case guide 8 so that when the upper case 7 is stored in the isolation chamber 4, the upper case 7 can be automatically stored by its own weight immediately before the storage is completed. I have.
[0015]
Reference numeral 10 denotes a lower case that fits in the lower part of the isolation room 4. Reference numeral 11 denotes a lower case guide provided outside the side surface of the lower case 10 and is drawn by a dotted line. Reference numerals 9c and 9d denote side wall guides provided on the isolation chamber side wall 9, respectively, sandwiching the lower case guide 11 from above and below, 9c being a lower side wall guideway, and 9d being a lower side wall guide shutter, each being drawn by a two-dot chain line. .
[0016]
The lower case guide 11, the lower side wall guideway 9c, and the lower side wall guide shifter 9d allow the lower case 10 to move in the front-rear direction and guide the movement. Further, a lower case guide inclined surface 11a is provided in front of the lower surface of the lower case guide 11 so that when the lower case 10 is stored in the isolation chamber 4, the lower case 10 can be automatically stored by its own weight immediately before completion of storage. I have.
[0017]
Reference numeral 12 denotes a case shelf serving as a ceiling of the isolation room 4, reference numeral 13 denotes an upper case cold air outlet for discharging cold air into the upper case 7, and reference numeral 14 denotes a lower case cold air outlet for discharging cool air into the lower case 10. It is. In this figure, the upper case cold air outlet 13 and the lower case cold air outlet 14 are cut away at positions passing through the upper case cold air outlet 13 and the lower case cold air outlet 14 in order to represent the same sectional view.
[0018]
Reference numeral 15 denotes a cold air distribution chamber provided with a damper 15a. In this drawing, the damper 15a represents a state in which the entrance 15b of the distribution chamber is closed. In addition, the dotted line part of the damper 15a represents the state when the damper 15a is opened. A refrigerating compartment passage set 16 includes a refrigerating compartment cold air distribution passage 16a for sending the cold air discharged from the cold air distributing compartment 15 to the refrigerating compartment 2 and the isolation compartment 4, a heat insulating passage 16b for heat insulation, and a passage cover 16c for a protective cover. It has an upper case cold air outlet 13, a lower case cold air outlet 14, and a cold room cold air outlet 17.
[0019]
Reference numeral 18 denotes a refrigerator compartment door, which has door pockets 19 and 20 on the rear side of the refrigerator compartment door 18. Reference numeral 21 denotes a vegetable room door, and 22 denotes a vegetable case, which is attached to the vegetable room door 21 by a door angle (not shown). Reference numeral 23 denotes a small case, which is attached to an upper portion of the vegetable case 22.
[0020]
Reference numeral 24 denotes a vegetable room cover, which is located above the vegetable case 22 and the accessory case 23, and is designed to keep the vegetable case 22 and the accessory case 23 at a predetermined humidity. In addition, 25 is a cooler, 26 is a blower assembly having a fan 27, and 28 is a pressure chamber communicating with the cool air distribution chamber 15.
[0021]
Then, the cool air cooled by the cooler 25 is sent to the pressure chamber 28 by the fan 27 of the blower 26. Thereafter, cool air is sent from the pressure chamber 28 to a freezing chamber (not shown). Further, the room temperature of the refrigerator room 2 is sensed by a temperature sensor (not shown) provided in the refrigerator room 2, and when the room temperature becomes higher than a predetermined temperature, the damper 15a of the cool air distribution chamber 15 is opened, and the pressure chamber is opened. The cold air that has entered the cold air distribution chamber 15 from 28 through the distribution chamber entrance 15b is sent to the cold room cold air distribution passage 16a.
[0022]
Thereafter, the cold air is sent to the lower case 10 through the lower case cold air discharge port 14 provided at a position close to the cold air distribution chamber 15 in the refrigerator compartment cold air distribution passage 16a, and a plurality of cooling air passes through the refrigerator compartment cold air distribution passage 16a. The cold air is discharged from the cold room discharge port 17 into the cold room 2, and the remaining cool air is sent into the upper case 7 through the cold air discharge port 13 in the upper case.
[0023]
The cool air sent to the upper case 7 cools the stored material in the upper case 7 and flows out to the refrigerator compartment 2 through a gap 7b between the front upper end 7a and the case shelf 12. Thereafter, the cool air flowing out of the gap 7b mixes with the relatively warm cool air descending from above the refrigerator compartment 2 and descends downward.
[0024]
At this time, the cool air (for example, cool air temperature = 1 ° C.) sent into the upper case 7 is discharged from the upper case cool air discharge port 13 after passing through the cool room cool air distribution passage 16a, and thus passes through the cool room cold air distribution passage 16a. Since the cool air absorbs a part of the heat in the refrigerator compartment 2 while it is in operation, it is lower than the temperature in the refrigerator compartment 2 (for example, 3 ° C.), but is sent to the lower case 10 (for example, cold air temperature = −1 ° C.) ), Which is higher than the cool air immediately after being sent from the cool air distribution chamber 15 to the cold room distribution passage 16a.
[0025]
In addition, the amount of cool air sent from the upper case cool air outlet 13 to the upper case 7 is controlled by the open area of each outlet so as to keep the temperature in the upper case 7 lower than that of the refrigerator compartment 2. The discharge amount has been adjusted.
[0026]
The cool air sent into the lower case 10 cools the stored material in the lower case 10 and flows out to the refrigerator compartment 2 through a gap 10b between the front upper end 10a and the outer bottom surface of the upper case 7. Thereafter, it mixes with the relatively warm and cold air coming down from the front of the upper case 7, passes through the space between the outer bottom surface of the lower case 10 and the partition 5, and has a partition opening 5 a provided in a part of the partition 5. And flows into the vegetable room 3.
[0027]
Cold air having little heat absorption from the outside immediately after flowing out of the cold air distribution chamber 15 flows into the lower case 10 through the lower case cold air discharge port 14 so that an appropriate amount of the cool air is efficiently maintained at a lower temperature than the upper case 7. The internal temperature and the internal temperature of the lower case 10 are different from each other (for example, the internal temperature of the upper case 7 = 2 ± 1 ° C. and the internal temperature of the lower case 10 = 0 ± 1 ° C.).
Part of the cool air sent into the upper case 7 and the lower case 10 leaks from the upper end of the side surface of the case, and the space between the outer side surface of each case and the side wall 9 of the isolation chamber moves downward from above with the odor in the case. Flows. At this time, since the temperature of the cool air of the lower case 10 is lower than that of the upper case 7, the cool air flow between the outside of the side surface of each case and the side wall 9 of the isolation chamber does not reverse to the upper side and is separated from the outside of the bottom surface of the lower case 10. It flows between the unit 5. Therefore, when fresh food such as a fish with a strong smell is stored in the lower case 10 having a lower temperature than the upper case 7, the strong smell of the fish or the like is unlikely to move upward, and the lower case 10 The smell will be difficult to transfer.
[0028]
The cool air that has flowed into the vegetable compartment 3 passes through a cool air passage formed by the partition 5 and the vegetable compartment cover 24, passes between the vegetable case 22 and the back of the vegetable compartment door 21, and then out of the bottom of the vegetable case 22. To reach. Thereafter, the cool air passes through the outside of the bottom surface of the vegetable case 22 and returns from the vegetable compartment 3 to below the cooler 25 by a duct (not shown). In addition, the arrow in a figure represents the flow of cool air.
[0029]
Since the refrigerator compartment 2 and the vegetable compartment 3 which have little difference in the room temperature are provided vertically adjacent to each other, the thickness of the heat insulating layer of the partition 5 may be thin, and the partition 5 is used for effective use of the room volume. Reference numeral 5 denotes an upwardly concave shape, into which the lower case 10 enters, and the lower surface of the lower case 10 is located below the upper surface of the front partition 6. Further, the outer surface of the bottom surface of the upper case 7 is provided above the front partition 6 in order to secure the height of the lower case 10.
[0030]
Due to the size of the damper 15a, the width of the cool air distribution chamber 15 cannot be so large in the left-right direction, but is large in the front-rear direction to secure a ventilation area. Therefore, it is necessary for the cold air passage leading from the cold air distribution chamber 15 to the refrigerator compartment cold air distribution passage 16a to have the same width in the front-rear direction so as not to lower the ventilation efficiency. Similarly, the discharge port 14 is located at a position where the discharge port 14 is forwardly protruded in order to secure a cool air passage.
[0031]
The upper case cold air discharge port 13 is located in a cold room cold air distribution passage 16a away from the cold air distribution chamber 15, and the cold room cold air distribution passage 16a in the vicinity thereof has a large width in the left-right direction and a large width in the front-rear direction. It may be less. Therefore, the position of the upper case cool air outlet 13 in the front-rear direction can be provided behind the position of the lower case cool air outlet 14.
[0032]
Further, since the outer surface of the bottom surface of the upper case 7 is located above the front partition 6, the rear wall 7 b of the upper case 7 is located rearward of the rear wall 10 b of the lower case 10 regardless of the removal of the upper case 7 from the isolation chamber 4. Can be provided. For these reasons, the upper case 7 can be taken out of the isolation chamber 4 and the upper case 7 with an increased storage capacity of the case can be obtained.
[0033]
The left-right direction means the left-right direction when the refrigerator is viewed from the front, and the front-rear direction means the front-back direction when the refrigerator is viewed from the front.
[0034]
In FIG. 2, the cool air sent from the cool air distribution chamber 15 to below the cool room cool air distribution passage 16 a (indicated by a dotted line) is divided into two passages on the left and right sides by the pressure generated by the fan 27 of the blower 26. The inside of the passage 16a is pushed upward. After that, the cold air pushed up the two right and left passages to near the upper end of the refrigerator compartment 2 is led to a passage that is reversed right and left, passes through the refrigerator compartment cold air distribution passage 16a, falls below the refrigerator compartment 2 and falls below the refrigerator compartment 2 and the refrigerator compartment cold air distribution passage 16a. The cool air falls to the upper case cool air outlet 13 at the end of the above.
[0035]
During this time, a part of the cool air is sent out from the lower case cool air outlet 14 to the lower case 10, and is sent out from each cold room cool air outlet 17 to the cold room 2, and the remaining cool air is discharged into the upper case cool air outlet 13. From the upper case 7. In addition, the arrow in a figure represents the flow of cool air.
[0036]
The opening of the passage cover 16c, which corresponds to the cold-air outlet 17 of the refrigerator compartment, is formed in a slit shape so as to prevent a stored article or the like from entering the inside. Further, a temperature sensor 29 for sensing the room temperature in the refrigerator compartment 2 is provided at 16c, and a rib-like shape is provided so that cold air from the refrigerator air outlet 17 above it does not directly hit the temperature sensor 29. An eave 30 is provided. Reference numeral 31 denotes a lamp cover, on the back side of which a lamp (not shown) for illuminating the inside of the refrigerator compartment 2 is provided.
[0037]
In FIG. 3, since the cool air immediately after flowing out of the cold air distribution chamber 15 flows into the lower case 10 from the lower case cold air discharge port 14, an appropriate amount of the cold air distribution passage 16a in the left-right direction is provided. Due to the size of the damper 15a of the chamber 15, it cannot be made too wide, and the lower case cold air discharge port 14 is provided at a limited position substantially at the center in the left-right direction.
[0038]
Therefore, lower case cold air outlets 14 are provided at the left and right of the heat insulating passage 16b so that the cool air is uniformly fed into the wide lower case 10 while the cool air is passing through the lower case cold air outlet 14 of the heat insulating passage 16b. The duct portion 14a of the lower case cold air discharge port 14 is inclined obliquely in the left-right direction so as to spread right and left. By doing so, it is possible to uniformly feed cool air into the lower case 10 with a simple structure without providing an inclined grill that projects toward the isolation chamber 4 in front of the passage cover 16c and inclines left and right to take extra space. And the stored matter in the lower case 10 can be efficiently cooled. In addition, the arrow in a figure represents the flow of cool air.
[0039]
It should be noted that if the opening of the passage of the duct portion 14a has a sufficient opening area, it is obvious that a cool air can be guided more efficiently by providing a wind direction plate for a cool air guide inside the duct.
[0040]
In FIG. 4, a finger is put on the upper case handle 7c located in front of the upper case 7 from below, until the upper guide lower protrusion 8b of the upper case guide 8 hits the upper guide lower protrusion 9c of the upper side wall guide shutter 9b. Pulled out, forward. Usually, in this state, the storage in the upper case 7 is taken in and out.
[0041]
Since the outside of the bottom of the upper case 7 is above the front partition 6, the upper case 7 can be taken out of the isolation chamber 4 by putting a finger on the upper case handle 7c from below regardless of the front partition 6 and lowering the upper guide. This is possible by pulling out the front while raising the projection 8b upward so that the projection 8b rides over the upper projection 9c. At this time, the upper end 7 d of the side surface of the upper case 7 is partially lowered so as not to hit the case shelf 12.
[0042]
In FIG. 5, a finger is put on the lower case handle 10c located in front of the lower case 10 from above, until the lower guide lower projection 11b of the lower case guide 11 hits the lower guide shutter upper projection 9e of the lower side wall guide shutter 9d. Pulled out, forward. Usually, in this state, the storages in the lower case 10 are taken in and out.
[0043]
Since the bottom outside of the lower case 10 is below the upper surface of the front partition 6, the lower case 10 can be taken out of the isolation chamber 4 by placing a finger on the lower case handle 10c from below and lowering the lower guide lower projection 11b. This can be achieved by pulling out the front side while pulling up the guide-sita upper projection 9e so as to get over it.
[0044]
At this time, the front end outside the bottom surface of the lower case 10 is at a position where it does not come into contact with the upper surface of the partition 5, and the upper case 7 is partially prevented from coming into contact with a part of the upper end 10 d of the side surface of the lower case 10. A low recess 10e is provided. The drawing when the lower case handle portion 10c is pulled up is drawn by a dotted line.
[0045]
Since the concave portion 10e is provided in the lower case 10, the space between the upper case 7 and the lower case 10 can be reduced, the storage capacity can be improved, a large amount of storage can be stored, and cold air can be supplied from the concave portion 10e. Flows easily to the outside of the side surface of the lower case 10, the flow resistance in the vicinity of the lower case 10 decreases, and the cool air flow increases, so that the lower case 10 can efficiently cool the stored material at a lower temperature.
[0046]
When the gap between the upper case 7 and the lower case 10 is small, a concave portion having a width such that the stored matter does not protrude is provided at the front upper end 10a or the side upper end 10d in the lower case 10 where the cooling state is poor. By doing so, it is clear that the cooling state can be improved by increasing the amount of cold airflow in the vicinity, and the flow resistance is reduced and the blowing efficiency is increased.
[0047]
【The invention's effect】
The present invention provides a vertically movable upper and lower two-stage upper case and a lower case in an isolation room arranged in a lower part of a refrigerator room, and lowers the temperature in the lower case to a temperature lower than the temperature in the upper case. Because of the simple structure, the smell of the stored material is not easily transferred to other stored materials other than the isolation room, it is difficult to dry, the freshness of fresh fish and meat is hardly lost, and it is more suitable for each stored material A refrigerator having a temperature zone and capable of storing finely-deposited goods can be obtained.
[0048]
In addition, when a fresh food having a particularly strong smell such as fish is stored in the lower case having a low temperature, a refrigerator having an isolated room in which the strong smell of the stock in the lower case is not easily transferred to the stock in the upper case is obtained.
[0049]
Further, according to the present invention, the cool air immediately after flowing out of the cool air distribution chamber is blown out from the lower case cool air outlet, and the cool air flowing through the cold room cool air distribution passage is blown out from the upper case cool air outlet, so that the temperature inside the lower case is reduced. Can obtain a refrigerator having an isolated room that can efficiently keep the temperature lower than the upper case temperature with a simple structure.
[0050]
Further, according to the present invention, the bottom outer side of the upper case is disposed above the front partition portion, and the lower case cold air outlet is provided near the cold air distribution chamber, and the upper case cold air outlet is located lower than the lower case cold air outlet. The rear wall of the upper case is located behind the rear wall of the lower case, regardless of the case being removed from the isolation room , so the case can be removed from the isolation room, increasing the storage capacity of the case. A refrigerator having the separated upper case in an isolated room is obtained.
[0051]
Further, according to the present invention, since the lower case cool air outlet has a cool air guide for diffusing cool air to the left and right, the cool air outlet in the left and right direction is provided from the lower case cool air discharge port provided near the cool air distribution chamber at the substantially center. Is diffused and sent into the lower case, and a refrigerator having an isolated room capable of efficiently and efficiently cooling the stored material in the wide lower case at a low temperature can be obtained.
[0052]
Further, according to the present invention, since the cool air guide comprises a duct portion formed in the heat insulating passage, it is possible to uniformly feed the cool air into the lower case without providing a cool air guide that takes extra space that protrudes into the isolation room. As a result, it is possible to obtain a refrigerator having an isolated room in which the volume of the lower case can be increased and the storage of the lower case can be uniformly cooled with high volume efficiency.
[0053]
Further, according to the present invention, since the bottom outer side of the lower case is arranged below the upper surface of the front partition portion, and a concave portion having a surface lower than the front upper end of the lower case is provided at a part of the upper end of the side surface of the case, The gap between the outside of the bottom of the lower case and the upper end of the lower case can be reduced, improving the volumetric efficiency, storing a large amount of storage, and making it easier for cold air to flow from the recess to the outside of the side of the lower case. The increase in flow resistance due to this is reduced at this point, the flow rate of cold air is increased, and a refrigerator having an isolated room that can efficiently cool the stored material at a lower temperature is obtained.
[Brief description of the drawings]
FIG. 1 is a sectional view of a main part of a refrigerator according to an embodiment of the present invention as viewed from a side surface of a main body.
FIG. 2 is a front view of the vicinity of a refrigerating room passage assembly having a refrigerating room cold air distribution passage for guiding cold air from a cold air distributor to an isolating room and a refrigerating room, showing an embodiment of the refrigerator of the present invention.
FIG. 3 is a cross-sectional view of a main part taken along line AA near the lower case discharge port illustrated in FIG. 2;
FIG. 4 is a sectional view of a main part when the upper case showing the embodiment of the refrigerator of the present invention is drawn forward.
FIG. 5 is a cross-sectional view of main parts when the lower case showing the embodiment of the refrigerator of the present invention is drawn forward.
[Explanation of symbols]
2 Refrigeration room 4 Isolation room 6 Front partition 7 Upper case 10 Lower case 10e Recess 13 Upper case discharge port 14 Lower case discharge port 14a Duct 15 Cold air distribution chamber 16a Cold room cold air distribution passage 16b Passage heat insulation

Claims

An upper and lower two-stage upper case and a lower case movable in the front-rear direction are provided in an isolated room arranged at the lower part of the refrigerator compartment, and the lower case is opened facing the outside of the bottom surface of the upper case, and the lower case is opened. To a temperature lower than the temperature in the upper case,
A cold air distribution passage extending upward from the cold air distribution chamber provided rearward and rearward of the cold storage chamber to the rear of the cold storage chamber; and a cold air blown into the upper case and the lower case respectively formed in the isolation chamber. An upper case cool air outlet and a lower case cool air outlet are provided. A refrigerator, wherein the cool air after flowing upward is blown out from the cool air outlet of the upper case .

The refrigerating chamber cold air distribution passage extends a central portion of the back surface the cooling chamber upward, according to claim 1, characterized in that extending both side portions of the refrigerating compartment rear bent in the refrigerating compartment upper downwardly refrigerator.

The lower case cold air outlet is provided near the cold air distribution chamber while the bottom outer surface of the upper case is disposed above the front partition, and the upper case cold air outlet is located rearward of the lower case cold air outlet. The refrigerator according to claim 1 or 2 , wherein the refrigerator is arranged.

The refrigerator according to any one of claims 1 to 3 , wherein the lower case cool air outlet has a cool air guide for diffusing cool air to the left and right.

5. The refrigerator according to claim 4 , wherein the cold air guide is formed of a duct portion which is formed so as to be inclined to a heat insulating passage which insulates the back side of the isolation chamber.

The bottom surface of the lower case is disposed below the upper surface of the front partition, and a recess having a surface lower than the front upper end of the lower case is provided in a part of the upper end of the side surface of the lower case. The refrigerator according to any one of claims 1 to 5 .