JP3647343B2

JP3647343B2 - refrigerator

Info

Publication number: JP3647343B2
Application number: JP2000004248A
Authority: JP
Inventors: 政雄宮本; 泰治大城; 宏吉村
Original assignee: Sharp Corp
Current assignee: Sharp Corp
Priority date: 2000-01-13
Filing date: 2000-01-13
Publication date: 2005-05-11
Anticipated expiration: 2020-01-13
Also published as: JP2001194047A

Abstract

PROBLEM TO BE SOLVED: To eliminate some disadvantages that a segment near a deep central location in a refrigerator chamber having an air circulation duct installed therein is hardly cooled due to a non-smooth circulation of cold air cooled by the cooler, only a location near a cold air discharging port of the cold air discharging duct has a tendency to be well cooled and there occurs a certain poor state in a uniform cooling capability in the refrigerator. SOLUTION: This refrigerator is characterized in that the same is comprised of a storing chamber 11 for storing some items to be stored; coolers 21, 25 for generating cold air flowed into the storing chamber 11; cold air passages 23, 27, 28 and 30 for guiding the cold air into the storing chamber 11; a member 42 for use in discharging cold heat generated by the cold air flowing in the cold air passages 23, 27, 28 and 30; and a temperature sensing means 75 installed around the member 42.

Description

【０００１】
【発明の属する技術分野】
本発明は冷気を貯蔵室内に送出する冷蔵庫に関する。
【０００２】
【従来の技術】
従来この種の冷蔵庫は、例えば特開平１０−５４６３８号公報に示されるように、冷蔵室内の奥中央部に上下方向に設けた空気循環ダクトと、前記空気循環ダクトの下方に設けられた圧縮機の停止時に運転される空気循環用送風機と、前記空気循環ダクトと所定の間隔をおいて奥両端部に上下方向に設けられ、圧縮機が運転され冷却器で冷却された送風機からの冷気を吐出する吐出口をもつ冷気吐出ダクトと、前記冷気吐出ダクトに前記冷蔵室の温度を検知する温度検知手段を設けたものがある。
【０００３】
【発明が解決しようとする課題】
前記のような冷蔵庫では、圧縮機の運転時、前記空気循環ダクトのある冷蔵室の奥中央付近では、冷却器で冷却された冷気がまわりにくいため冷えにくく、前記冷気吐出ダクトの冷気の吐出口近くのみがよく冷える傾向にあり、庫内の均一な冷却能力に不足があるという課題があり、また、前記温度検知手段の多くの部分が、棚により区画された同一区画内の前記吐出口の下方の位置にあり、圧縮機の運転時、庫内での冷気の流れる道筋に温度検知手段の一部が位置するため、冷気が温度検知手段に触れる恐れがあり、正確な庫内温度の検知ができず、適正な温度に庫内を保てないという課題があり、さらに、空気循環用送風機の運転時、中央にある前記空気循環ダクトの、空気吸入口で左右を挟まれる中央付近の領域は、庫内空気の循環流がまわりにくく、貯蔵物が冷却されにくいという課題があった。
【０００４】
本発明の冷蔵庫は上記のような課題を解決したもので、本発明の冷蔵庫は、貯蔵物を収納する貯蔵室と、前記貯蔵室に流入する冷気を生成する冷却器と、前記貯蔵室に隣接するとともに前記冷却器を内設して該冷気を前記貯蔵室に導く冷気通路と、前記冷気通路内を流通する冷気による冷熱を前記貯蔵室内に放出する部材と、前記冷気通路の前記冷却器と前記部材との間の前記貯蔵室側に設けられるとともに前記貯蔵室と前記冷気通路とを断熱する断熱部材と、前記部材の左右の周辺に配されて前記冷却通路を流通する冷気を前記貯蔵室に吐出する吐出口と、一の前記吐出口に近接した上方かつ前記部材の側方に配されて前記貯蔵室の温度を検知する温度検知手段とを備えたことを特徴とするものである。
【０００５】
また本発明の冷蔵庫は、貯蔵物を収納する貯蔵室と、前記貯蔵室に流入する冷気を生成する冷却器と、前記貯蔵室に隣接するとともに前記冷却器を内設して該冷気を前記貯蔵室に導く冷気通路と、前記冷気通路内を流通する冷気による冷熱を前記貯蔵室内に放出する部材と、前記部材の前記冷気通路側の両側部に設けられるとともに前記貯蔵室と前記冷気通路とを断熱する断熱部材と、前記部材の左右の周辺に配されて前記冷却通路を流通する冷気を前記貯蔵室に吐出する吐出口と、一の前記吐出口に近接した上方かつ前記部材の側方に配されて前記貯蔵室の温度を検知する温度検知手段とを備えたことを特徴とするものである。
【０００６】
また本発明の冷蔵庫は、上記各構成の冷蔵庫において、前記温度検知手段の下方に配される前記吐出口の通路の上側を前方に行くほど下方へ傾斜したことを特徴とするものである。
【０００７】
また本発明の冷蔵庫は、上記各構成の冷蔵庫において、前記部材を着脱自在に設けたことを特徴とするものである。
【０００９】
【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。
【００１０】
図１は本発明の第１実施形態の冷蔵庫を示す側面断面図、図２は図１の冷蔵庫の冷蔵室の正面図、図３は図１の冷蔵庫の要部詳細図、図４は図１の冷蔵庫の上面断面図、図５は部材を示す斜視図、図６は他の部材を示す斜視図、図７は図５の部材付近の要部断面図、図８は図５の部材付近の要部断面図、図９は本発明の第２実施形態の冷蔵庫の側面断面図、図１０は図９の冷蔵庫の冷蔵室の正面図である。
【００１１】
図１において、冷蔵庫１は外部を覆う外箱２ａの内側に内箱２ｂが配され、外箱２ａと内箱２ｂとの隙間には発泡ポリウレタン等の断熱材２ｃが充填されている。そして、１ａは前記冷蔵庫１の運転を制御する制御装置１ｂを含む電装ボックスであり、前記制御装置１ｂは冷蔵庫１の後述する各々の電気部品と電気的に接続されている。また、冷蔵庫１の内部は上から冷蔵室１１、野菜室１２、冷凍室１３の順に区分けされている。
【００１２】
野菜室１２と冷凍室１３は断熱部材から成る仕切枠１７及び断熱部材から成る仕切板１９に仕切られており、冷凍室１３は更に断熱部材から成る仕切枠１８により上部と下部に仕切られている。冷蔵室１１と野菜室１２は断熱部材から成る仕切枠１６及び樹脂成形品から成る仕切板３１、３２によって仕切られている。仕切板３２には貫通口３２ａが設けられている。
【００１３】
冷蔵室１１の下部には仕切板４６で仕切られる隔離室である氷温室１４が設けられている。冷蔵室１１には複数の棚４５が設けられ、棚４５、仕切板４６で冷蔵室１１は複数個に区画されている。冷蔵室１１の前面は回動式の断熱扉３により開閉可能になっている。野菜室１２、冷凍室１３の上部及び冷凍室１３の下部は前面が各々スライド式の断熱扉４、５、６により開閉可能になっており、収納容器５４、５５、５６を引出せるようになっている。
【００１４】
冷凍室１３の後部には圧縮機２０が配されている。圧縮機２０には吐出パイプ２０ａを介して凝縮器（不図示）が連結されており、吸込パイプ２０ｂを介して冷却器２１、２５が直列に連結されている。凝縮器と冷却器２５は第１キャピラリーチューブ（不図示）を介して連結されている。冷却器２１、２５の間には第２キャピラリーチューブ（不図示）が配されている。
【００１５】
これにより冷凍サイクルが構成され、冷凍サイクル運転が行われると冷却器２１、２５が冷却されるようになっている。冷却器２１、２５の下方には冷却器２１、２５の除霜を行う除霜ヒータ６１、６２が設けられている。６３、６４はドレン受け部材である。
【００１６】
また、凝縮器と第１キャピラリーチューブとの間には冷媒流の切換手段が設けられ、切換手段と冷却器２１とが第３キャピラリーチューブ（不図示）を介して連結されている。そして、切換手段を切り替えることにより、冷却器２１のみの冷却を可能にしている。
【００１７】
冷却器２１は冷気通路２３内に配されており、冷気通路２３は内箱２ｂと樹脂成形品から成るエバカバー３３とにより形成されている。冷気通路２３内の冷却器２１の上方には送風機２２が配されている。冷気通路２３は背面板３３ａに設けられた冷凍室１３への吐出口１３ａ及び戻り口１３ｂにより冷凍室１３と連通している。
【００１８】
冷却器２５は冷気通路２７内に配されている。冷気通路２７の下部は内箱２ｂと野菜室１２の背面板３４とにより形成されている。背面板３４は断熱部材から成り、冷却器２５に近設される野菜室１２の過冷却を防止している。冷気通路２７内の冷却器２５の上方には送風機２６が配されている。冷気通路２７は戻り口１２ｂにより野菜室１２と連通している。
【００１９】
冷気通路２７の上部は氷温室１４の背面板３５に固着される断熱部材３６と内箱２ｂとにより形成されている。断熱部材３６には吐出口３６ａが設けられている。冷蔵室１１の正面図を図２に示すと、背面板３５には吐出口３６ａと同じ位置に吐出口３５ａが設けられている。吐出口３５ａ、３６ａにより冷蔵室１１は冷気通路２７と連通している。
【００２０】
冷気通路２７は冷蔵室１１の背面部分の冷気通路２８と連通している。図２において、冷気通路２８は略中央に配される中央通路２８ａ（第２通路）と、中央通路２８ａの両側部に設けられる側方通路２８ｂ（第１通路）とにリブ２８ｄにより分岐されている。リブ２８ｄは後述する背面板７０と一体に形成されている。また、冷気通路２７も冷気通路２８に対応して分岐通路２７ａ、２７ｂに分岐されている。
【００２１】
中央通路２８ａの下端には送風機２９が配されている。送風機２９の前面には冷蔵室１１に臨む送風機カバー４１が取り付けられている。送風機カバー４１には複数の開口部４１ａが形成されている。
【００２２】
送風機２９部分の詳細図を図３に示すと、中央通路２８ａは、送風機２９により開口部４１ａを介して冷蔵室１１から取入れられる空気と、送風機２６（図１参照）により冷気通路２７を流通する冷気とが混流するようになっている。冷気通路２７を流通する冷気は送風機カバー４１の壁面４１ｂに衝突し、案内部４１ｃにより送風機２９の方向に導かれる。案内部４１ｃは、送風機カバー４１が金属の場合には切り起して一体に形成してもよい。
【００２３】
この時、送風機カバー４１の内面には相応の断熱部材を冷気通路２７からの冷気の流域に設け、結露対策としてもよい。また、送風機カバー４１を金属等により形成すると、中央通路２８ａを通る冷気の冷熱が送風機カバー４１から冷蔵室１１内に放出されることになる。
【００２４】
開口部４１ａは案内部４１ｃよりも上方に形成され、冷気通路２７を流通する冷気の進路外に配されている。これにより、冷気通路２７を流通する冷気が開口部４１ａから冷蔵室１１内へ侵入することを防止している。その結果、冷気漏れによる冷蔵室１１の局部の過冷却を防止できるようになっている。
【００２５】
冷気通路２８は冷蔵室１１の内壁を形成する部材４２と内箱２ｂ上に設けられた背面板７０とにより形成されている。背面板７０は前記の背面板３５と一体に形成されている。部材４２は図５に示すような形状の熱伝導性を有する熱伝導部材（例えば、加工性が良く防錆効果の高いアルミニウムやその合金やステンレス等）から形成されている。
【００２６】
これにより蓄冷及び冷熱の放出を可能にしている。なお、前記熱伝導部材の厚みが厚い場合は蓄冷能力が上がり、強度も増加する。厚みが薄い場合は冷熱の放出効率が上がり、軽量化にも有利である。そのため、目的に応じて薄板材や厚板材を適時適所に選び設ければよい。
【００２７】
部材４２の表面に凹凸形状をプレス加工等により設けると、表面積を増加させることができる。これにより蓄冷や冷熱の放出量が増加して冷却効率の向上を図ることができる。更に、線状に連続する凹部または凸部を設けることにより、部材４２の強度を補強することができる。
【００２８】
また、部材４２の上端と下端部分の断面詳細図を図７、図８に示す。これらの図によると、部材４２は背面板７０に設けられた上取付部７１及び背面板３５に設けられた下取付部７２により係止される。上取付部７１のレバー部７１ａを手指で押上げると爪部７１ｂの係合が解除される。
【００２９】
この状態で部材４２の上部を手前に倒して、上方に引上げることにより部材４２は下取付部７２からはずすことができ、部材４２は着脱自在になっている。これにより冷気通路２８や部材４２の冷気通路２８側の清掃等を容易に行うことができるようになっている。なお、部材４２の下部は断熱部材３６に固着されるシール材７３により密閉されている。
【００３０】
また、前記制御装置１ｂと電気的に接続されている後述する温度検知手段７５は、前記部材４２上にはなく、その周辺に設けられているため、さらに、前記部材４２は着脱しやすくなっている。
【００３１】
冷蔵室１１の上面断面図を図４に示すと、側方通路２８ｂを覆う部材４２の側方通路２８ｂ側の面には、側方通路２８ｂを通る冷気の冷熱の多くを部材４２に伝達させないように断熱部材２８ｃが配されている。側方通路２８ｂの側壁は背面板７０により形成されており、側壁には複数の開口部７０ａが設けられている。
【００３２】
背面板７０には部材４２の外側周辺を覆う壁面部７０ｃが形成されている。壁面部７０ｃには開口部７０ａと連通する複数の吐出部７０ｂが凹設されている。従って、吐出部７０ｂ及び開口部７０ａを介して、側方通路２８ｂは冷蔵室１１と連通し、冷気を冷蔵室１１に吐出できるようになっている。
【００３３】
図２において、壁面部７０ｃは載置部７４に載置される棚４５と同じ高さ付近に形成され、棚４５上に載置される食品等が吐出部７０ｂに落下しないようになっている。そして、開口部７０ａは貯蔵物が側方通路２８ｂに落込まないようにスリット状になっている。また、背面板７０には冷気を吐出部７０ｂに導くリブ７０ｄが形成されている。なお、本図においては棚４５と仕切板４６は、それらの後方をわかりやすくするため、２点鎖線で描いている。
【００３４】
そして、冷蔵室１１は棚４５にて複数に区画され、そのうちの上下方向で中央よりの区画内の吐出部７０ｂ上方に温度検知手段７５は設けられている。なお、前記温度検知手段７５は例えばサーミスターからなり、背面板７０の壁面部７０ｃやその付近の一部を冷蔵室１１側に突出させ、その部をスリット状に開口させた開口部７０ｅの裏側（内箱２ｂ側）付近に温度検知手段７５は取り付けられている。
【００３５】
そのため、開口部７０ａを通り吐出部７０ｂから吐出された冷気は、温度検知手段７５には直接当たることなく、前記棚４５、４５で区画された空間の庫内空気と混ざりながら、前記棚４５に収められた貯蔵物を冷却した後、冷蔵室１１の下方にある貫通口３２ａに導かれ、前記棚４５の前方から下方へ流れる。
【００３６】
このとき、棚４５、４５で区画された空間の吐出部７０ｂから吐出された冷気と混ざった庫内空気が、前記温度検知手段７５周辺にも充満し、前記部材４２の冷熱の直接の影響もなく冷蔵室１１の庫内温度として検出される。なお、前記開口部７０ｅの冷蔵室１１側周辺には、吐出部７０ｂから吐出された冷気が温度検知手段７５に直接当たらないように、必要に応じて遮蔽リブ７０ｆが設けられている。
【００３７】
また、前記温度検知手段７５はその中心部が前記吐出部７０ｂの上方約５０ｍｍの位置にあり、棚４５の水平面裏面の下方約４０ｍｍの位置にあり、冷蔵室１１のほぼ平均室温に相当する庫内温度を検出する。
【００３８】
なお、前記温度検知手段７５は、棚４５、４５で区画された同一区画内の吐出部７０ｂの上方１０ｍｍ以上、前記棚４５で上側にある棚４５の水平面裏面の下方２０ｍｍ以上離れていれば、前記吐出部７０ｂからの冷気流や上側の前記棚４５の裏面に漂う比較的暖かい冷気等の影響もなく、冷蔵室１１のほぼ平均室温に相当する庫内温度を検出する。
【００３９】
そして、部材４２の冷熱で冷却された庫内の冷気は、前記部材４２の冷蔵室１１側付近を下方へおりるとともに、吐出部７０ｂから吐出された冷気と混ざりあいながら庫内の空間を流れるため、前記冷熱による冷気が直接前記温度検知手段７５に当たることもなく、さらに適正な温度に庫内を保つことができる。
【００４０】
なお、開口部７０ａと連通する前記吐出部７０ｂは、場合によっては、棚４５にて複数に区画された全ての空間に各々設ける必要はなく、前記冷蔵室１１の下方の空間には前記吐出部７０ｂを設けずにしておき、上方の棚４５、４５の２段のみに左右に開口部７０ａと連通する前記吐出部７０ｂを設け、前記棚４５の後端と冷蔵室１１の背面（部材４２の面も含む）部とに隙間を設けておくと、冷蔵室１１の前後の上方から冷気が下がり、下方の空間をも冷却し、送風機２９による庫内空気の撹拌効果と同時に、部材４２の冷熱効果も働き、前記冷蔵室１１は均一に冷却されることになる。
【００４１】
また、前記温度検知手段７５は左右方向を長手方向としたため、温度検知手段７５の上下方向の領域が少なくてすみ、吐出口の位置する領域を広くとれ、条件にあわせて開口部７０ａや吐出部７０ｂが設けられ、さらに庫内温度の均一化がはかれる。
【００４２】
また、前記吐出部７０ｂの前記開口部７０ａに通じる上側壁面部を、吐出部７０ｂ側へ行くほど下方になるように若干傾斜させて形成しておくと、吐出される冷気が下方へ流出するようになり、さらに、上方に設けられた温度検知手段７５への前記冷気の影響はなくなり、さらに適正な温度に庫内を保つことができる。なお、前記吐出部７０ｂの上部に前記遮蔽板７０ｆに相当する突出部を前方に行くほど下方に傾斜するように設けても前記同様の効果が得られる。
【００４３】
冷蔵室１１の天井部分には樹脂成形品から成る上面板４３と内箱２ｂにより天井ダクト５４が形成されている。天井ダクト５４は左右に並設されており、中央通路２８ａと連通している。中央通路２８ａを通る冷気は背面板７０に形成されるリブ７０ｇにより左右に拡散されて天井ダクト５４に導かれる。
【００４４】
そして、上面板４３の前後方向に複数設けられた天井吐出口４３ａにより左右に分散して冷気を吐出できるようになっている。中央通路２８ａを通る冷気は天井ダクト５４に流入する前に左右に拡散されているため、冷蔵室１１の背面板７０に近い位置に設けられた天井吐出口４３ａからも充分冷気が吐出される。
【００４５】
そのため、冷蔵室１１の天井部の全域から冷気が降りることになり庫内温度の均一化に役立つ。なお、左右の天井ダクト５４の間には透明な照明カバー５３で覆われる照明灯５１が設けられている。
【００４６】
また、前記部材４２は冷蔵室１１の背面の多くの領域をしめており、前記照明灯５１の反射板の役目をもはたしており、前記部材４２による照明灯５１の反射光は冷蔵室１１の多くの領域を照らす。そして、前記温度検知手段７５は前記部材４２以外の所に位置するため、部材４２は欠ける所なく充分広くとれ、前記反射板としての効果は充分得られる。
【００４７】
そして、前記天井ダクト５４を部材４２と同様のもの（例えば、熱伝導部材）にて形成されていると、天井ダクト５４の冷蔵室１１側全域からも冷熱効果による庫内への冷却が行われ、より庫内温度の均一化に役立ち、また、光の反射板としての効果も得られることは明白である。
【００４８】
前記構成の冷蔵庫１において、冷凍室１３の庫内温度が上昇し、前記冷凍室１３に設けられた温度検知手段（不図示）で検出された温度が所定の温度（例えば−１８℃）を越えたとき、圧縮機２０および送風機２２が制御装置１ｂにて駆動されると、冷凍室１３内の空気は戻り口１３ｂから冷気通路２３に導かれる。該空気は冷却器２１と熱交換して冷却され、吐出口１３ａから冷凍室１３に流入する。これにより冷凍室１３内が所定の温度に冷却される。
【００４９】
また、冷蔵室１１の庫内温度が上昇し、冷蔵室１１の背面に設けられた前記温度検知手段７５で検出された温度が所定の温度（例えば５℃）を越えたとき、圧縮機２０および送風機２６、２９が制御装置１ｂにて駆動されると、野菜室１２内の空気は戻り口１２ｂから冷気通路２７に導かれる。
【００５０】
該空気は冷却器２５と熱交換して冷却され冷気が生成される。該冷気の一部は開口部３５ａ、３６ａから氷温室１４に流入する。これにより氷温室１４内が例えば−１℃に冷却される。
【００５１】
他の冷気は中央通路２８ａ及び側方通路２８ｂに分岐して進行する。側方通路２８ｂを通る冷気はリブ７０ｄに案内されて吐出部７０ｂから冷蔵室１１内に吐出される。中央通路２８ａを通る冷気は、開口部４１ａから中央通路２８ａに導かれる冷蔵室１１内の空気と混流される。そして、天井ダクト５４を通り、天井吐出口４３ａから吐出される。
【００５２】
また、中央通路２８ａ内を流通する冷気による冷熱の一部は部材４２に伝えられ、側方通路２８ｂの前面を含む全面から冷蔵室１１に冷熱として放出される。従って、部材４２からの冷熱と、吐出部７０ｂ及び天井吐出口４３ａから分散して吐出される冷気とにより、冷蔵室１１内が効率良く均一に冷却される。
【００５３】
冷蔵室１１内の空気は棚４５の間や棚４５の前面を通り氷温室１４の下方から開口部３２ａを介して冷気通路３０を流通し、野菜室１２内の前方に流入する。更に収納容器５４の前面から下方を通り、野菜室１２内が冷却される。そして、戻り口１２ｂから冷却器２５の下部に導かれて冷気が循環する。
【００５４】
そして、前記温度検知手段７５の検出結果に基づいて圧縮機２０及び送風機２６が運転及び停止するよう制御装置１ｂで制御され、冷蔵室１１及び野菜室１２の温度は例えば３℃前後の温度に維持されるようになっている。
【００５５】
また、前記温度検知手段７５で検出された温度が所定の温度（例えば５℃）を越えたとき、前記圧縮機２０及び送風機２６、２９が運転され、冷却器２５にて冷却された冷気により、冷蔵室１１及び野菜室１２が冷却され、温度検知手段７５で所定の検出温度（例えば１℃）になったとき、前記圧縮機２０及び送風機２６、２９が停止される。
【００５６】
その後、温度検知手段７５で所定の検出温度（例えば３℃）になったとき、冷却器２５による冷却を停止したままで送風機２６、２９の一方または両方を運転するように制御装置１ｂで制御すると、部材４２に蓄積された冷熱により中央通路２８ａを通る冷気が冷却され、該冷気によって冷蔵室１１内の冷却が行われるため、長時間冷蔵室１１を低温に保て、圧縮機２０のＯＮ−ＯＦＦのサイクル数が削減され、圧縮機２０の起動時の多量な消費電力が削減でき、エネルギーの省力化につながる。
【００５７】
さらには、前記送風機２９の運転により、冷蔵室１１内の空気は撹拌され、貯蔵物への冷気送風が増し冷却効率も良好になり、また、庫内の冷気温度はさらに均一になる。なお、圧縮機２０を停止して送風機２６を運転する場合は、さらに冷却器２５の除霜をして冷蔵室１１内の加湿を行うこともできる。
【００５８】
なお、本実施形態によると、前記冷媒流の切換手段（不図示）により冷却器２１のみの冷却にて前記冷凍室１３のみを冷却することが可能であり、冷蔵室１１を冷却する場合は、前記切換手段にて冷却器２５、２１の冷却にて、冷蔵室１１、野菜室１２、冷凍室１３を冷却するようになっている。
【００５９】
また、本実施形態によると、中央通路２８ａを通る冷気の冷熱の一部は熱伝導板として機能する部材４２を熱伝導し、全面から冷蔵室１１内に放出される。従って、冷蔵室１１は中央通路２８ａと側方通路２８ｂを覆う広い面積から一様に放出される冷熱により均一に冷却される。そして、前記部材４２内に前記温度検知手段７５が位置しないため、温度検知手段７５は前記冷熱による影響をうけにくく、より正確な冷蔵室１１の庫内温度を検出する。
【００６０】
この時、断熱部材２８ｃにより、側方通路２８ｂを通る冷気から部材４２に多くの冷熱は伝達されない。このため、冷気通路２７に多くの冷気を流した際に部材４２や吐出部７０ｂの結露を防止し、冷蔵室１１内の乾燥を防止することができる。そして、断熱部材２８ｃを設置する面積を可変することにより、所望の温度や流量の冷気を流通させることができる。
【００６１】
また、冷気通路２８を通る冷気の温度を低くするか冷気の流量を増やして冷却能力を上げることにより、中央通路２８ａ付近の部材４２の冷蔵室１１側に結露が生じる恐れのある場合や、部材４２の冷気による冷却を和らげるために、薄い断熱部材を中央通路２８ａの部材４２側に設けてもよい。
【００６２】
また、吐出部７０ｂ及び天井吐出口４３ａは冷蔵室１１の背面及び上面に複数設けられるため、冷気が分散して冷蔵室１１に流入する。このため、冷蔵室１１は均一且つ迅速に冷却される。
【００６３】
吐出部７０ｂは、部材４２を開口して形成してもよいが、本実施形態のように部材４２の外側周辺に設ける方が望ましい。即ち、正面側に開口しないため、第１に、冷気通路２８が覆われて美観が向上する。第２に、前面へ直接冷気が吐出されないので、側方通路２８ｂ内の騒音や開口部７０ａでの吐出風の音が正面へ直接出ず、それらの騒音の低減がなされる。
【００６４】
第３に、部材４２に冷気吐出や温度検出等のための開口部がないため部材４２の全面が均一な冷熱の放出に寄与して更に庫内温度が均一となるとともに、照明灯５１等の光反射面としてもムラなく広範囲に利用できる。等の効果を得ることができる。
【００６５】
また、中央通路２８ａに面した部材４２は冷気による冷熱が直接伝えられるが、側方通路２８ｂに面した部材４２は中央通路２８ａ部分から冷熱が伝えられる。このため、放出される冷熱は側方通路２８ｂ部分で若干減少し、冷蔵室１１内の温度ばらつきが生じる。
【００６６】
そして、吐出部７０ｂを例えば中央通路２８ａ上に配するとこの温度ばらつきがより大きくなるが、本実施形態では吐出部７０ｂを中央通路２８ａの側壁を成すリブ２８ｄと冷蔵室１１の側壁との間の略中央に配している。これにより、側方通路２８ｂ部分の前方や冷蔵室１１の側壁付近を含めた領域を前記吐出部７０ｂからの冷気で冷却するので、前記温度ばらつきが低減されてより均一な冷熱放出による冷却を行うことができる。さらに、部材４２も吐出部７０ｂの配置を考慮した上で最大限の広さが採れ、双方の吐出部７０ｂの冷気吐出しと部材４２の冷熱放出とで冷蔵室１１内をより均一に冷却できる。
【００６７】
また、部材４２は図６に示すようなゼリー状や液状の保冷材４２ａを包装材４２ｂ、４２ｃにより封入した蓄冷部材にしてもよい。このようにすると、部材４２は冷気通路２８内を流通する冷気の冷熱でより蓄冷され、冷蔵室１１内の温度分布に応じて冷熱として放出する。従って、冷蔵室１１が均一に冷却される。
【００６８】
さらに、蓄冷部材により圧縮機２０の停止中や冷気通路２８内の冷気温度の変動に対して吸熱や放熱を行い、冷気通路２８内の冷気温度を維持することができるようになる。この時、蓄冷部材が冷蔵室１１の内壁を形成しているので冷蔵室１１のスペースを広くすることができ、冷蔵庫１の省スペース化を図ることができる。包装材４２ｂ、４２ｃを熱伝導性を有するアルミニウム合金やステンレスにするとより望ましい。
【００６９】
また、冷却器２５により低温に生成された冷気は、冷蔵室１１内の空気と混合することにより若干昇温される。これにより、部材４２や天井吐出口４３ａ付近に生じる結露や氷結をより防止することができ、冷蔵室１１及び野菜室１２の乾燥を防止することができる。
【００７０】
さらに、冷蔵室１１及び野菜室１２を冷却する冷却器２５と冷凍室１３を冷却する冷却器２１を設けることにより、冷気通路２７、２８を流通する冷気の温度を冷気通路２３内の冷気の温度より高く設定することができる。これにより、部材４２に生じる結露や氷結をより防止することができる。
【００７１】
また、部材４２は冷蔵室１１の背面に立設されて上下方向に延在している。このため、断熱扉３の開閉回数が多く冷蔵室１１内の温度や湿度が非常に上昇した際に、部材４２に結露して水滴が生じても貯蔵物上に直接滴下することがない。従って、貯蔵物を傷めず、良好な保存状態を維持できる。
【００７２】
この時、冷却器２５で冷却された冷気通路２８内の冷気の送風を停止すると、部材４２が冷蔵室１１内の温度に近づくとともに温度上昇により冷蔵室１１内が乾燥する。これにより、該水滴は部材４２や背面板３５を流下する間に一部が蒸発する。従って、再び冷蔵室１１内の湿度を上昇させることができる。さらに、部材４２の前方に空気流通可能な多孔性（例えば、小判穴、丸穴等）のフェンス状の防護壁を設けると、部材４２をさらに薄くできるので、冷熱の放出効果が向上し、キズ付防止や破損防止にもなる。
【００７３】
次に、図９は第２実施形態の冷蔵庫を示す側面断面図である。説明の便宜上図１〜図４の第１実施形態と同一の部分には同一の符号を付している。冷蔵庫１は外部を覆う外箱２ａの内側に内箱２ｂが配され、外箱２ａと内箱２ｂとの隙間には発泡ウレタン等の断熱材２ｃが充填されている。
【００７４】
そして、１ａは前記冷蔵庫１の運転を制御する制御装置１ｂを含む電装ボックスであり、前記制御装置１ｂは冷蔵庫１の後述する各々の電気部品と電気的に接続されている。また、冷蔵庫１の内部は上から冷蔵室１１、野菜室１２、冷凍室１３の順に区分けされている。
【００７５】
野菜室１２と冷凍室１３は断熱部材から成る仕切枠１７及び断熱部材から成る仕切板１９に仕切られており、冷凍室１３はさらに断熱部材から成る仕切枠１８により上部と下部に仕切られている。冷蔵室１１と野菜室１２は断熱部材から成る仕切枠１６及び樹脂成形品から成る仕切板３１、３２によって仕切られている。仕切板３２には貫通口３２ａが設けられている。
【００７６】
冷蔵室１１の下部には仕切板４６で仕切られる隔離室である氷温室１４が設けられている。冷蔵室１１には複数の棚４５が設けられている。冷蔵室１１の前面は回動式の断熱扉３により開閉可能になっている。野菜室１２、冷凍室１３の上部及び冷凍室１３の下部は前面が夫々スライド式の断熱扉４、５、６により開閉可能になっており、収納容器５４、５５、５６を引出せるようになっている。
【００７７】
冷凍室１３の後部には圧縮機２０が配されている。圧縮機２０には吐出パイプ２０ａを介して凝縮器（不図示）が連結されており、吸込パイプ２０ｂを介して冷却器２１が連結されている。凝縮器と冷却器２１はキャピラリーチューブ（不図示）を介して連結されている。
【００７８】
これにより冷凍サイクルが構成され、冷凍サイクル運転が行われると冷却器２１が冷却されるようになっている。冷却器２１の下方には冷却器２１の除霜を行う除霜ヒータ６２が設けられている。６４はドレン受け部材である。
【００７９】
冷却器２１は冷気通路２３内に配されており、冷気通路２３の下部は内箱２ｂと樹脂成形品から成るエバカバー３３とにより形成されている。冷気通路２３内の冷却器２１の上方には送風機２２が配されている。冷気通路２３は背面板３３ａに設けられた吐出口１３ａ、１３ｃおよび戻り口カバー３３ｂに設けられた戻り口１３ｂにより冷凍室１３と連通している。
【００８０】
野菜室１２の背面は前述の仕切板１９に覆われており、冷気通路２３の上部の圧力室２３ａはエバカバー３３と仕切板１９とにより形成されている。断熱部材から成る仕切板１９により、冷却器２１に近設される野菜室１２の過冷却を防止している。
【００８１】
冷気通路２３は送風機２２の上方に配される冷気通路２８とダンパー６５を介して連通している。冷気通路２８の下部は氷温室１４の背面板３５に固着される断熱部材３６と内箱２ｂとにより形成されている。図１０に示すように、背面板３５と断熱部材３６には同じ位置に開口部３５ａ、３６ａが設けられている。開口部３５ａ、３６ａにより氷温室１４は冷気通路２８と連通している。
【００８２】
冷気通路２８は略中央に配される中央通路２８ａと、中央通路２８ａの両側部に設けられる側方通路２８ｂとにリブ２８ｄにより分岐されている。リブ２８ｄは後述する背面板７０と一体に形成されている。
【００８３】
冷気通路２８の上部は冷蔵室１１の内壁を形成する部材４２と内箱２ｂ上に設けられた背面板７０とにより形成されている。部材４２は第１実施形態と同様に、アルミニウム合金やステンレス等の熱伝導性を有する熱伝導部材から形成されている。
【００８４】
冷蔵室１１は前述の図４と同様に、側方通路２８ｂを覆う部材４２の内面には、側方通路２８ｂを通る冷気の冷熱の多くを部材４２に伝達させないように断熱部材２８ｃが配されている。側方通路２８ｂの側壁は背面板７０により形成されており、側壁には複数の開口部７０ａが設けられている。
【００８５】
背面板７０には部材４２の外側周辺を覆う壁面部７０ｃが形成されている。壁面部７０ｃには開口部７０ａと連通する複数の吐出部７０ｂが凹設されている。従って、吐出部７０ｂ及び開口部７０ａにより、側方通路２８ｂは冷蔵室１１と連通し、冷気を冷蔵室１１に吐出できるようになっている。
【００８６】
壁面部７０ｃは載置部７４に載置される棚４５と同じ高さ付近に形成され、棚４５に載置される食品等が吐出部７０ｂに落下しないようになっている。また、背面板７０には冷気を吐出部７０ｂに導くリブ７０ｄが形成されている。そして、開口部７０ａは貯蔵物が側方通路２８ｂに落込まないようにスリット状になっている。なお、図１０においては棚４５と仕切板４６は、それらの後方をわかりやすくするため、２点鎖線で描いている。
【００８７】
そして、冷蔵室１１は棚４５にて複数に区画され、そのうちの上下方向で中央よりの区画内の吐出部７０ｂ上方に温度検知手段７５は設けられている。なお、前記温度検知手段７５は例えばサーミスターからなり、背面板７０の壁面部７０ｃやその付近の一部を冷蔵室１１側に突出させ、その部をスリット状に開口させた開口部７０ｅの裏側（内箱２ｂ側）付近に温度検知手段７５は取り付けられている。
【００８８】
冷蔵室１１の天井部分には樹脂成形品から成る上面板４３と内箱２ｂにより天井ダクト５４が形成されている。天井ダクト５４は左右に並設されており、中央通路２８ａと連通している。中央通路２８ａを通る冷気は背面板７０に形成されるリブ７０ｇにより左右に拡散されて天井ダクト５４に導かれる。
【００８９】
そして、上面板４３に設けられた天井吐出口４３ａにより左右に分散して冷気を吐出できるようになっている。左右の天井ダクト５４の間には透明な照明カバー５３で覆われる照明灯５１が設けられている。
【００９０】
前記構成の冷蔵庫１において、冷凍室１３の庫内温度が上昇し、前記冷凍室１３に設けられた温度検知手段（不図示）で検出された温度が所定の温度（例えば−１８℃）を越えたとき、圧縮機２０および送風機２２が制御装置１ｂにて駆動されると、冷凍室１３内の空気は戻り口１３ｂから冷気通路２３に導かれる。該空気は冷却器２１と熱交換して冷却され、吐出口１３ａ、１３ｃから冷凍室１３に流入する。これにより冷凍室１３内が所定の温度に冷却される。
【００９１】
また、冷蔵室１１の庫内温度が上昇し、冷蔵室１１の背面に設けられた前記温度検知手段７５で検出された温度が所定の温度（例えば５℃）を越えたとき、制御装置１ｂにて圧縮機２０および送風機２２が駆動されダンパー６５を開くことにより、冷却器２１と熱交換した冷気はダンパー６５を介して冷却通路２８内を流通するようになり、該冷気の一部は開口部３５ａ、３６ａから氷温室１４に流入する。これにより氷温室１４内が例えば−１℃に冷却される。
【００９２】
他の冷気は中央通路２８ａ及び側方通路２８ｂに分岐して進行する。側方通路２８ｂを通る冷気はリブ７０ｄに案内されて吐出部７０ｂから冷蔵室内に吐出される。中央通路２８ａを通る冷気は、天井ダクト５４を通り、天井吐出口４３ａから吐出される。
【００９３】
また、中央通路２８ａ内を流通する冷気による冷熱の一部は部材４２に伝えられ、側方通路２８ｂの前面を含む全面から冷蔵室１１に冷熱として放出される。従って、部材４２からの冷熱と、吐出部７０ｂ及び天井吐出口４３ａから分散して吐出される冷気とにより冷蔵室１１内が効率良く均一に冷却される。
【００９４】
冷蔵室１１内の空気は棚４５の間や棚４５の前面を通り氷温室１４の下方から開口部３２ａを介して冷気通路３０を流通し、野菜室１２内の前方に流入する。更に収納容器５４の前面から下方を通り、野菜室１２内が冷却される。そして、流出口（不図示）からダクト（不図示）を通り冷却器２１の下部に導かれて冷気が循環する。図２と同様の温度検知手段７５で検出された（冷蔵室１１の）温度に応じてダンパー６５が開閉し、冷蔵室１１及び野菜室１２の温度を例えば３℃に維持するようになっている。
【００９５】
本実施形態によると、第１実施形態と同様に、部材４２は中央通路２８ａを通る冷気の冷熱の一部を熱伝導させて冷蔵室１１内に放出する熱伝導板として機能している。従って、冷蔵室１１は広い面積から一様に放出される冷熱により均一に冷却される。
【００９６】
この時、断熱部材２８ｃにより側方通路２８ｂを通る冷気から部材４２に冷熱の多くは伝達されない。このため、冷気通路２７に多くの冷気を流しても部材４２や吐出部７０ｂに結露が生じることがない。断熱部材２８ｃを設置する面積を可変することにより、所望の温度や流量の冷気を流通させることができる。
【００９７】
また、吐出部７０ｂを部材４２の外側周辺に設けることにより、美観の向上、騒音を防止、全面から均一な冷熱の放出、及び光反射面として広範囲の利用を図ることができる。そして、吐出部７０ｂを中央通路２８ａの側壁を成すリブ２８ｄと冷蔵室１１の側壁との間の略中央に配しているので、温度ばらつきが低減され、より均一な冷却を行うことができる。部材４２は前記と同様に図６に示すような蓄冷部材にしてもよい。
【００９８】
本実施形態の中央通路２８ａに前述の図３に示す送風機２９を設けると、冷蔵室１１内の冷気と中央通路２８ａを通る冷気とが混合され、第１実施形態と同様の効果を得ることができる。
【００９９】
そして、温度検知手段７５および遮蔽リブ７０ｆを部材４２周辺の吐出部７０ｂ上方に設けてあるため、冷気吐出や温度検出等のための開口部もなく、広い領域に前記部材４２を設けることができ部材４２全面が均一な冷熱の放出に役立ち、庫内温度が均一となるとともに、光反射面としてもむらなく広範囲に利用でき、さらに、温度検知手段７５に関しては、前記部材４２の冷熱や庫内に吐出された冷気の影響もうけにくく、正確な庫内温度の検出ができ、庫内をより適正な温度に保てる冷蔵庫が得られる。
【０１００】
また、前記温度検知手段７５は左右方向を長手方向としたため、温度検知手段７５の上下方向の領域が少なくてすみ、吐出口の位置する領域を広くとれ、条件にあわせて開口部７０ａや吐出部７０ｂが設けられ、さらに庫内温度の均一化がはかれ、前記吐出部７０ｂの前記開口部７０ａに通じる上側壁面部を、吐出部７０ｂ側へ行くほど下方になるように若干傾斜させて形成しておくと、吐出される冷気が下方へ流出するようになり、さらに、上方に設けられた温度検知手段７５への前記冷気の影響はなくなり、さらに適正な温度に庫内を保つことができる。
【０１０１】
また、第１、第２実施形態は、冷気通路２８を中央通路２８ａと２つの側方通路２８ｂとの３分割に分岐した実施例であるが、冷気通路２８を４個以上の分岐通路に分岐して冷気供給量に合わせて適所に断熱材を設けた場合であっても同様の効果を得ることができる。例えば、冷気通路２８を５分割とし、中央部以外に断熱部材を上記と同様に設ける。そして、左右の各２通路の内、中央側の通路を通って上昇する冷気を外側の通路を通って下降させて冷蔵室１１内に吐出するようにしてもよい。
【０１０２】
また、前記氷温室１４は冷気量の調整にて他の温度帯の隔離室（例えば：パーシャル室＝−３℃、野菜室＝３℃）となるようにしてもよい。
【０１０３】
なお、本発明において、冷気通路を通る冷気による冷熱の一部が部材を介して貯蔵室内に放出されるとは、冷気通路を通る冷気の一部が部材から吸熱して該部材を冷却し、部材が貯蔵室内から吸熱して貯蔵室内を冷却することを意味する。
【０１０４】
また、前記で左右方向とは、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。
【０１０５】
【発明の効果】
本発明によると、冷気通路を通る冷気の冷熱の一部は蓄冷部材や熱伝導部材から成る部材に伝えられ、全面から貯蔵室内に放出される。従って、貯蔵室は広い面積から一様に放出される冷熱により均一に冷却される。しかも、前記部材内には温度検知手段がないため、広い領域に部材を設けることができ、さらに冷却効率はあがり、また、温度検知手段が部材の冷熱の影響を受けにくいため、より正確に庫内温度が検知でき、庫内をより適正な温度に保てる。
【０１０６】
また、本発明によると、冷気通路を通る冷気の冷熱の一部は蓄冷部材や熱伝導部材から成るさらに広い面積の部材に伝えられ、全面から貯蔵室内に放出される。従って、貯蔵室はさらに広い面積から一様に放出される冷熱により均一に冷却される。しかも、部材周辺の冷気吐出口上方に温度検知手段があるため、広い領域に前記部材を設けることができ、さらに冷却効率はあがり、また、温度検知手段が部材の冷熱や吐き出された冷気の影響を受けにくいため、さらに正確な庫内温度が検知でき、庫内をより適正な温度に保てる。
【０１０７】
そしてまた、本発明によると、棚にて適度の空間に分割された区画内に、条件にあわせて吐出口が設けられ、上下方向で中央寄りの吐出口上方に温度検知手段が設けられており、温度検知手段が部材の冷熱や吐き出された冷気の影響を受けにくいため、いっそう正確な平均的庫内温度が検知でき、しかも、部材周辺の冷気吐出口上方に温度検知手段があるため、広い領域に部材を設けることができ、いっそう冷却効率はあがり、貯蔵室内は部材全面から貯蔵室内に放出される冷熱と吐出口からの冷気によりさらに均一に適正な温度に冷却される。
【０１０８】
また、本発明によると、温度検知手段の上下方向の領域が少なくてすみ、吐出口の位置する領域を広くとれ、条件にあわせて吐出口が設けられ、さらに庫内温度の均一化がはかれる。
【０１０９】
そしてまた、本発明によると、上方に温度検知手段を設けた吐出口の通路の上側が、前方に行くほど下方へ傾斜しているため、吐出される冷気が下方へ流出するようになり、さらに温度検知手段への冷気の影響はなくなり、さらに適正な温度に庫内を保つことができる。
【図面の簡単な説明】
【図１】本発明の第１実施形態の冷蔵庫の側面断面図である。
【図２】本発明の第１実施形態の冷蔵庫の冷蔵室の正面図である。
【図３】本発明の第１実施形態の冷蔵庫の要部詳細図である。
【図４】本発明の第１実施形態の冷蔵庫の上面断面図である。
【図５】本発明の第１実施形態の冷蔵庫の部材を示す斜視図である。
【図６】本発明の第１実施形態の冷蔵庫の他の部材を示す斜視図である。
【図７】本発明の第１実施形態の冷蔵庫の部材の要部断面図である。
【図８】本発明の第１実施形態の冷蔵庫の部材の要部断面図である。
【図９】本発明の第２実施形態の冷蔵庫の側面断面図である。
【図１０】本発明の第２実施形態の冷蔵庫の冷蔵室の正面図である。
【符号の説明】
１１冷蔵室（貯蔵室）
２１、２５冷却器
２３、２７、２８、３０冷気通路
４２部材
４５棚
７０ｂ吐出部（吐出口）
７５温度検知手段[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a refrigerator that delivers cold air into a storage room.
[0002]
[Prior art]
Conventionally, this type of refrigerator is disclosed in, for example, Japanese Patent Laid-Open No. 10-54638, an air circulation duct provided in the vertical direction at the back center of the refrigerator compartment, and a compressor provided below the air circulation duct. Cooling air is discharged from a blower for air circulation that is operated when the engine is stopped, and a blower that is provided vertically at both ends at a predetermined distance from the air circulation duct and that is operated by a compressor and cooled by a cooler. There is a cool air discharge duct having a discharge port, and a temperature detection means for detecting the temperature of the refrigerator compartment in the cold air discharge duct.
[0003]
[Problems to be solved by the invention]
In the refrigerator as described above, during the operation of the compressor, in the vicinity of the back center of the refrigerator compartment where the air circulation duct is located, it is difficult to cool because the cool air cooled by the cooler is difficult to rotate, and the cool air discharge duct of the cool air discharge duct There is a problem that only the vicinity tends to cool well, there is a problem that there is a lack of uniform cooling capacity in the warehouse, and many parts of the temperature detection means are the parts of the discharge ports in the same section partitioned by shelves. It is in the lower position, and when the compressor is operating, part of the temperature detection means is located along the path of the cold air in the warehouse, so there is a risk of cold air coming into contact with the temperature detection means, and accurate detection of the internal temperature There is a problem that the inside of the cabinet cannot be maintained at an appropriate temperature, and when the air circulation blower is operated, the area around the center of the air circulation duct at the center sandwiched between the right and left by the air inlet Is the circulating air flow Hardly around reservoir there is a problem that it is difficult to cool.
[0004]
  The refrigerator of the present inventionthe aboveIn the refrigerator of the present invention, a refrigerator that stores stored items, a cooler that generates cold air flowing into the storage chamber,Adjacent to the storage room and installing the coolerA cool air passage for guiding the cool air to the storage chamber, and cooling by the cool air flowing through the cool air passage.AboveA member that discharges into the storage chamber;A heat insulating member that is provided on the storage chamber side between the cooler and the member of the cold air passage, and that insulates the storage chamber and the cold air passage; Cool air flowing through the storage chamberA discharge port;A temperature detecting means arranged to be close to the one discharge port and on the side of the member to detect the temperature of the storage chamber;It is characterized by comprising.
[0005]
  The refrigerator of the present invention includes a storage chamber for storing stored items, a cooler for generating cold air flowing into the storage chamber, an adjoining storage chamber, and an internal cooling device to store the cold air. A cool air passage leading to the chamber, a member for releasing cool heat from the cold air flowing through the cool air passage into the storage chamber, and provided on both sides of the member on the cold air passage side, and the storage chamber and the cold air passage A heat insulating member that insulates, a discharge port that discharges cool air that is arranged around the left and right sides of the member and flows through the cooling passage to the storage chamber, and close to the one discharge port and on the side of the member. And a temperature detecting means for detecting the temperature of the storage chamber.
[0006]
  Moreover, the refrigerator of the present invention is characterized in that, in the refrigerator having each of the above-described configurations, the upper side of the passage of the discharge port arranged below the temperature detecting means is inclined downward as it goes forward.
[0007]
  The refrigerator of the present invention is characterized in that in the refrigerator having the above-described configuration, the member is detachably provided.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the refrigerator of the present invention will be described with reference to the drawings.
[0010]
1 is a side sectional view showing a refrigerator according to a first embodiment of the present invention, FIG. 2 is a front view of a refrigerator compartment of the refrigerator of FIG. 1, FIG. 3 is a detailed view of a main part of the refrigerator of FIG. 1, and FIG. 5 is a perspective view showing a member, FIG. 6 is a perspective view showing another member, FIG. 7 is a cross-sectional view of the main part in the vicinity of the member in FIG. 5, and FIG. 8 is in the vicinity of the member in FIG. FIG. 9 is a side sectional view of a refrigerator according to a second embodiment of the present invention, and FIG. 10 is a front view of a refrigerator compartment of the refrigerator of FIG.
[0011]
In FIG. 1, the refrigerator 1 has an inner box 2b disposed inside an outer box 2a that covers the outside, and a gap between the outer box 2a and the inner box 2b is filled with a heat insulating material 2c such as polyurethane foam. Reference numeral 1a denotes an electrical box including a control device 1b for controlling the operation of the refrigerator 1, and the control device 1b is electrically connected to each electrical component described later of the refrigerator 1. Moreover, the inside of the refrigerator 1 is divided into the refrigerator compartment 11, the vegetable compartment 12, and the freezer compartment 13 in order from the top.
[0012]
The vegetable compartment 12 and the freezer compartment 13 are partitioned by a partition frame 17 made of a heat insulating member and a partition plate 19 made of a heat insulating member, and the freezer compartment 13 is further partitioned into an upper part and a lower part by a partition frame 18 made of a heat insulating member. . The refrigerator compartment 11 and the vegetable compartment 12 are partitioned by a partition frame 16 made of a heat insulating member and partition plates 31 and 32 made of a resin molded product. The partition plate 32 is provided with a through hole 32a.
[0013]
An ice greenhouse 14, which is an isolation room partitioned by a partition plate 46, is provided at the lower part of the refrigerator compartment 11. The refrigerator compartment 11 is provided with a plurality of shelves 45, and the refrigerator compartment 11 is partitioned into a plurality of shelves 45 and partition plates 46. The front surface of the refrigerator compartment 11 can be opened and closed by a rotating heat insulating door 3. The upper part of the vegetable compartment 12, the freezer compartment 13, and the lower part of the freezer compartment 13 can be opened / closed by heat-insulating doors 4, 5 and 6, respectively, so that the storage containers 54, 55 and 56 can be pulled out. ing.
[0014]
A compressor 20 is disposed at the rear of the freezer compartment 13. A condenser (not shown) is connected to the compressor 20 via a discharge pipe 20a, and coolers 21 and 25 are connected in series via a suction pipe 20b. The condenser and the cooler 25 are connected via a first capillary tube (not shown). A second capillary tube (not shown) is disposed between the coolers 21 and 25.
[0015]
Thus, a refrigeration cycle is configured, and when the refrigeration cycle operation is performed, the coolers 21 and 25 are cooled. Defrost heaters 61 and 62 for defrosting the coolers 21 and 25 are provided below the coolers 21 and 25. 63 and 64 are drain receiving members.
[0016]
In addition, a refrigerant flow switching means is provided between the condenser and the first capillary tube, and the switching means and the cooler 21 are connected via a third capillary tube (not shown). And only the cooler 21 can be cooled by switching the switching means.
[0017]
The cooler 21 is disposed in the cool air passage 23, and the cool air passage 23 is formed by the inner box 2b and an evaporative cover 33 made of a resin molded product. A blower 22 is disposed above the cooler 21 in the cool air passage 23. The cold air passage 23 communicates with the freezer compartment 13 through a discharge port 13a and a return port 13b to the freezer compartment 13 provided in the back plate 33a.
[0018]
The cooler 25 is disposed in the cold air passage 27. The lower part of the cold air passage 27 is formed by the inner box 2 b and the back plate 34 of the vegetable compartment 12. The back plate 34 is made of a heat insulating member, and prevents overcooling of the vegetable compartment 12 that is provided close to the cooler 25. A blower 26 is disposed above the cooler 25 in the cool air passage 27. The cold air passage 27 communicates with the vegetable compartment 12 through the return port 12b.
[0019]
The upper part of the cold air passage 27 is formed by a heat insulating member 36 fixed to the back plate 35 of the ice greenhouse 14 and the inner box 2b. The heat insulating member 36 is provided with a discharge port 36a. When the front view of the refrigerator compartment 11 is shown in FIG. 2, the discharge port 35a is provided in the back plate 35 in the same position as the discharge port 36a. The refrigerator compartment 11 communicates with the cold air passage 27 through the discharge ports 35a and 36a.
[0020]
The cold air passage 27 communicates with the cold air passage 28 in the rear portion of the refrigerator compartment 11. In FIG. 2, the cool air passage 28 is branched by a rib 28d into a central passage 28a (second passage) disposed substantially at the center and side passages 28b (first passages) provided on both sides of the central passage 28a. Yes. The ribs 28d are formed integrally with a back plate 70 described later. The cold air passage 27 is also branched into branch passages 27 a and 27 b corresponding to the cold air passage 28.
[0021]
A blower 29 is disposed at the lower end of the central passage 28a. A blower cover 41 facing the refrigerator compartment 11 is attached to the front surface of the blower 29. A plurality of openings 41 a are formed in the blower cover 41.
[0022]
When the detailed view of the blower 29 is shown in FIG. 3, the central passage 28a circulates through the cold air passage 27 by the air taken in from the refrigerator compartment 11 by the blower 29 through the opening 41a and the blower 26 (see FIG. 1). Cold air is mixed. The cold air flowing through the cold air passage 27 collides with the wall surface 41b of the blower cover 41 and is guided toward the blower 29 by the guide portion 41c. When the blower cover 41 is made of metal, the guide portion 41c may be cut and raised and formed integrally.
[0023]
At this time, an appropriate heat insulating member may be provided on the inner surface of the blower cover 41 in the cold air flow area from the cold air passage 27 to prevent condensation. In addition, when the blower cover 41 is formed of metal or the like, cold heat of the cold air passing through the central passage 28 a is released from the blower cover 41 into the refrigerator compartment 11.
[0024]
The opening 41 a is formed above the guide portion 41 c and is arranged outside the course of the cold air flowing through the cold air passage 27. This prevents cold air flowing through the cold air passage 27 from entering the refrigerator compartment 11 from the opening 41a. As a result, it is possible to prevent local overcooling of the refrigerator compartment 11 due to cold air leakage.
[0025]
The cold air passage 28 is formed by a member 42 forming the inner wall of the refrigerating chamber 11 and a back plate 70 provided on the inner box 2b. The back plate 70 is formed integrally with the back plate 35. The member 42 is formed of a heat conductive member having a heat conductivity having a shape as shown in FIG. 5 (for example, aluminum having good workability and high antirust effect, an alloy thereof, stainless steel, or the like).
[0026]
This makes it possible to store cold and release cold. In addition, when the thickness of the said heat conductive member is thick, cold storage capacity goes up and intensity | strength also increases. When the thickness is small, the efficiency of releasing cold heat increases, which is advantageous for weight reduction. Therefore, a thin plate material or a thick plate material may be selected and provided at an appropriate place according to the purpose.
[0027]
The surface area can be increased by providing an uneven shape on the surface of the member 42 by pressing or the like. As a result, the amount of cold storage and the amount of released heat is increased, and the cooling efficiency can be improved. Furthermore, the intensity | strength of the member 42 can be reinforced by providing the recessed part or convex part which continues in a linear form.
[0028]
Moreover, the cross-sectional detailed drawing of the upper end of the member 42 and a lower end part is shown in FIG. 7, FIG. According to these drawings, the member 42 is locked by an upper mounting portion 71 provided on the back plate 70 and a lower mounting portion 72 provided on the back plate 35. When the lever portion 71a of the upper mounting portion 71 is pushed up with fingers, the engagement of the claw portion 71b is released.
[0029]
In this state, the member 42 can be detached from the lower mounting portion 72 by tilting the upper part of the member 42 forward and pulling it upward, so that the member 42 is detachable. As a result, the cold air passage 28 and the member 42 can be easily cleaned on the cold air passage 28 side. The lower part of the member 42 is hermetically sealed with a sealing material 73 fixed to the heat insulating member 36.
[0030]
Further, since the temperature detecting means 75 described later, which is electrically connected to the control device 1b, is not provided on the member 42 but is provided in the vicinity thereof, the member 42 is further easily attached and detached. Yes.
[0031]
When the top sectional view of the refrigerator compartment 11 is shown in FIG. 4, most of the cold heat of the cold air passing through the side passage 28 b is not transmitted to the member 42 on the surface on the side passage 28 b side of the member 42 covering the side passage 28 b. Thus, the heat insulating member 28c is arranged. A side wall of the side passage 28b is formed by a back plate 70, and a plurality of openings 70a are provided on the side wall.
[0032]
A wall surface portion 70 c that covers the outer periphery of the member 42 is formed on the back plate 70. A plurality of discharge portions 70b communicating with the opening 70a are recessed in the wall surface portion 70c. Accordingly, the side passage 28b communicates with the refrigerating chamber 11 through the discharge portion 70b and the opening 70a, and the cool air can be discharged into the refrigerating chamber 11.
[0033]
In FIG. 2, the wall surface portion 70 c is formed in the vicinity of the same height as the shelf 45 placed on the placement portion 74, so that food or the like placed on the shelf 45 does not fall onto the discharge portion 70 b. . The opening 70a has a slit shape so that the stored item does not fall into the side passage 28b. The back plate 70 is formed with ribs 70d that guide the cool air to the discharge part 70b. In addition, in this figure, the shelf 45 and the partition plate 46 are drawn with the dashed-two dotted line in order to make those backs intelligible.
[0034]
The refrigerator compartment 11 is divided into a plurality of shelves 45, and a temperature detecting means 75 is provided above the discharge part 70b in the compartment from the center in the vertical direction. The temperature detecting means 75 is made of, for example, a thermistor, and projects the wall surface portion 70c of the back plate 70 and a part of the wall surface portion 70c to the refrigerating chamber 11 side, and the back side of the opening 70e in which the portion is opened in a slit shape. The temperature detection means 75 is attached near (inner box 2b side).
[0035]
Therefore, the cold air discharged from the discharge portion 70b through the opening 70a does not directly hit the temperature detection means 75, and mixes with the air in the space partitioned by the shelves 45, 45, and enters the shelf 45. After the stored product is cooled, it is led to the through-hole 32a below the refrigerator compartment 11 and flows downward from the front of the shelf 45.
[0036]
At this time, the internal air mixed with the cool air discharged from the discharge portion 70b of the space partitioned by the shelves 45, 45 is also filled around the temperature detecting means 75, and the direct influence of the cold of the member 42 is also affected. Without being detected as the internal temperature of the refrigerator compartment 11. In addition, a shielding rib 70f is provided around the refrigerator compartment 11 side of the opening 70e as necessary so that the cold air discharged from the discharge portion 70b does not directly hit the temperature detecting means 75.
[0037]
The temperature detecting means 75 has a central portion at a position about 50 mm above the discharge portion 70 b and a position about 40 mm below the back surface of the horizontal surface of the shelf 45. The internal temperature is detected.
[0038]
The temperature detection means 75 is 10 mm or more above the discharge section 70b in the same section divided by the shelves 45, 45, and 20 mm or less below the rear surface of the horizontal surface of the shelf 45 located above the shelf 45. The inside temperature corresponding to the average room temperature of the refrigerator compartment 11 is detected without being influenced by the cold air flow from the discharge section 70b or the relatively warm air drifting on the back surface of the upper shelf 45.
[0039]
The cool air in the cabinet cooled by the cold heat of the member 42 flows downward in the vicinity of the refrigerator compartment 11 side of the member 42 and flows in the interior space while mixing with the cool air discharged from the discharge portion 70b. Therefore, the cool air by the cold heat does not directly hit the temperature detecting means 75, and the inside of the cabinet can be kept at a more appropriate temperature.
[0040]
In some cases, the discharge part 70b communicating with the opening part 70a does not need to be provided in each of the spaces partitioned into a plurality of sections by the shelf 45, and the discharge part 70b is provided in the space below the refrigerator compartment 11. 70b is not provided, and only the upper two shelves 45, 45 are provided with the discharge portion 70b communicating with the opening 70a on the left and right sides, and the rear end of the shelf 45 and the rear surface of the refrigerator compartment 11 (of the member 42). If a gap is provided between the front and rear of the refrigerating chamber 11, the cool air is lowered from the upper part of the refrigerator compartment 11, and the lower space is also cooled. The effect also works and the refrigerator compartment 11 is uniformly cooled.
[0041]
Further, since the temperature detecting means 75 has the left-right direction as the longitudinal direction, the area of the temperature detecting means 75 in the vertical direction can be reduced, and the area where the discharge port is located can be widened. 70b is provided, and the internal temperature is further uniformed.
[0042]
Further, if the upper wall surface portion communicating with the opening portion 70a of the discharge portion 70b is formed to be slightly inclined so as to go downward toward the discharge portion 70b, the discharged cold air flows out downward. Further, the influence of the cold air on the temperature detecting means 75 provided above is eliminated, and the interior of the refrigerator can be kept at a more appropriate temperature. Note that the same effect as described above can be obtained even if a protrusion corresponding to the shielding plate 70f is provided on the upper part of the discharge part 70b so as to be inclined downward as it goes forward.
[0043]
A ceiling duct 54 is formed on the ceiling portion of the refrigerator compartment 11 by an upper plate 43 made of a resin molded product and the inner box 2b. The ceiling duct 54 is arranged side by side and communicates with the central passage 28a. The cold air passing through the central passage 28 a is diffused left and right by ribs 70 g formed on the back plate 70 and guided to the ceiling duct 54.
[0044]
Then, a plurality of ceiling discharge ports 43 a provided in the front-rear direction of the upper surface plate 43 can be dispersed left and right to discharge cool air. Since the cold air passing through the central passage 28 a is diffused to the left and right before flowing into the ceiling duct 54, the cold air is sufficiently discharged also from the ceiling outlet 43 a provided near the back plate 70 of the refrigerator compartment 11.
[0045]
For this reason, cold air comes down from the entire ceiling of the refrigerator compartment 11, which helps to make the internal temperature uniform. An illumination lamp 51 covered with a transparent illumination cover 53 is provided between the left and right ceiling ducts 54.
[0046]
The member 42 covers many areas on the back surface of the refrigerator compartment 11 and serves as a reflector of the illumination lamp 51. The reflected light of the illumination lamp 51 by the member 42 is much of the refrigerator compartment 11. Illuminate the area. Since the temperature detecting means 75 is located at a place other than the member 42, the member 42 can be taken sufficiently wide without lacking, and the effect as the reflecting plate can be sufficiently obtained.
[0047]
If the ceiling duct 54 is formed of the same material as the member 42 (for example, a heat conducting member), cooling to the interior by the cooling effect is also performed from the entire area of the ceiling duct 54 on the refrigerator compartment 11 side. It is obvious that the temperature inside the chamber can be made more uniform and the effect as a light reflector can be obtained.
[0048]
In the refrigerator 1 having the above-described configuration, the internal temperature of the freezer compartment 13 rises, and the temperature detected by temperature detection means (not shown) provided in the freezer compartment 13 exceeds a predetermined temperature (for example, −18 ° C.). When the compressor 20 and the blower 22 are driven by the control device 1b, the air in the freezer compartment 13 is guided to the cold air passage 23 from the return port 13b. The air is cooled by exchanging heat with the cooler 21 and flows into the freezer compartment 13 from the discharge port 13a. Thereby, the inside of the freezer compartment 13 is cooled to a predetermined temperature.
[0049]
When the internal temperature of the refrigerator compartment 11 rises and the temperature detected by the temperature detecting means 75 provided on the back of the refrigerator compartment 11 exceeds a predetermined temperature (for example, 5 ° C.), the compressor 20 and When the blowers 26 and 29 are driven by the control device 1b, the air in the vegetable compartment 12 is guided to the cold air passage 27 from the return port 12b.
[0050]
The air is cooled by exchanging heat with the cooler 25 to generate cold air. A part of the cold air flows into the ice greenhouse 14 from the openings 35a and 36a. Thereby, the inside of the ice greenhouse 14 is cooled to −1 ° C., for example.
[0051]
The other cold air branches into the central passage 28a and the side passage 28b and proceeds. The cold air passing through the side passage 28b is guided by the rib 70d and discharged from the discharge portion 70b into the refrigerator compartment 11. The cold air passing through the central passage 28a is mixed with the air in the refrigerator compartment 11 guided from the opening 41a to the central passage 28a. And it passes through the ceiling duct 54 and is discharged from the ceiling discharge port 43a.
[0052]
A part of the cold heat generated by the cold air flowing through the central passage 28a is transmitted to the member 42, and is released as cold heat from the entire surface including the front surface of the side passage 28b. Therefore, the inside of the refrigerator compartment 11 is efficiently and uniformly cooled by the cold heat from the member 42 and the cold air discharged from the discharge part 70b and the ceiling discharge port 43a.
[0053]
The air in the refrigerator compartment 11 passes between the shelves 45 and the front of the shelves 45, circulates through the cold air passage 30 from below the ice greenhouse 14 through the opening 32 a, and flows into the front of the vegetable compartment 12. Furthermore, the inside of the vegetable compartment 12 is cooled through the lower side from the front surface of the storage container 54. Then, the cool air is circulated through the return port 12b to the lower part of the cooler 25.
[0054]
Then, based on the detection result of the temperature detecting means 75, the compressor 20 and the blower 26 are controlled by the control device 1b so as to operate and stop, and the temperatures of the refrigerator compartment 11 and the vegetable compartment 12 are maintained at a temperature of about 3 ° C., for example. It has come to be.
[0055]
When the temperature detected by the temperature detecting means 75 exceeds a predetermined temperature (for example, 5 ° C.), the compressor 20 and the blowers 26 and 29 are operated, and the cool air cooled by the cooler 25 When the refrigerator compartment 11 and the vegetable compartment 12 are cooled and the temperature detection means 75 reaches a predetermined detection temperature (for example, 1 ° C.), the compressor 20 and the blowers 26 and 29 are stopped.
[0056]
Thereafter, when the temperature detection means 75 reaches a predetermined detection temperature (for example, 3 ° C.), the control device 1b controls to operate one or both of the blowers 26 and 29 while the cooling by the cooler 25 is stopped. The cool air accumulated in the member 42 cools the cold air passing through the central passage 28a, and the cool air cools the inside of the refrigerating chamber 11. Therefore, the refrigerating chamber 11 is kept at a low temperature for a long time, and the compressor 20 is turned on. The number of OFF cycles is reduced, and a large amount of power consumption at the start of the compressor 20 can be reduced, leading to energy saving.
[0057]
Furthermore, by the operation of the blower 29, the air in the refrigerator compartment 11 is agitated, the cool air blowing to the storage is increased, the cooling efficiency is improved, and the cool air temperature in the refrigerator is further uniform. When the compressor 20 is stopped and the blower 26 is operated, the cooler 25 can be further defrosted to humidify the refrigerator compartment 11.
[0058]
In addition, according to this embodiment, it is possible to cool only the freezer compartment 13 by cooling only the cooler 21 by the refrigerant flow switching means (not shown), and when cooling the refrigerator compartment 11, The refrigerating room 11, the vegetable room 12, and the freezing room 13 are cooled by cooling the coolers 25 and 21 by the switching means.
[0059]
Further, according to the present embodiment, a part of the cold heat of the cold air passing through the central passage 28a conducts heat through the member 42 functioning as a heat conduction plate and is discharged into the refrigerator compartment 11 from the entire surface. Therefore, the refrigerator compartment 11 is uniformly cooled by the cold heat uniformly discharged from a large area covering the central passage 28a and the side passage 28b. And since the said temperature detection means 75 is not located in the said member 42, the temperature detection means 75 is hard to receive the influence by the said cold, and detects the temperature in the refrigerator compartment 11 more correctly.
[0060]
At this time, not much cold heat is transmitted to the member 42 from the cold air passing through the side passage 28b by the heat insulating member 28c. For this reason, when a lot of cool air flows through the cool air passage 27, the condensation of the member 42 and the discharge portion 70b can be prevented, and drying in the refrigerator compartment 11 can be prevented. And the cold air of desired temperature and flow volume can be distribute | circulated by changing the area which installs the heat insulation member 28c.
[0061]
Further, when the temperature of the cold air passing through the cold air passage 28 is lowered or the cooling capacity is increased by increasing the flow rate of the cold air, there is a possibility that dew condensation may occur on the refrigerating chamber 11 side of the member 42 near the central passage 28a. In order to reduce the cooling by the cool air of 42, a thin heat insulating member may be provided on the member 42 side of the central passage 28a.
[0062]
Moreover, since the discharge part 70b and the ceiling discharge port 43a are provided with two or more by the back surface and upper surface of the refrigerator compartment 11, cold air disperse | distributes and flows into the refrigerator compartment 11. For this reason, the refrigerator compartment 11 is cooled uniformly and rapidly.
[0063]
Although the discharge part 70b may be formed by opening the member 42, it is desirable to provide the discharge part 70b around the outside of the member 42 as in the present embodiment. That is, since it does not open to the front side, first, the cool air passage 28 is covered and the aesthetic appearance is improved. Secondly, since cold air is not discharged directly to the front surface, noise in the side passage 28b and sound of the discharge air at the opening 70a are not directly emitted to the front surface, and the noise is reduced.
[0064]
Thirdly, since the member 42 does not have an opening for discharging cold air or detecting temperature, the entire surface of the member 42 contributes to uniform discharge of cold heat, and the inside temperature is further uniformed. As a light reflecting surface, it can be used in a wide range without unevenness. Etc. can be obtained.
[0065]
In addition, the member 42 facing the central passage 28a is directly transmitted with cold by cold air, but the member 42 facing the side passage 28b is transmitted with cold from the central passage 28a portion. For this reason, the released cold heat is slightly reduced in the side passage 28b, and temperature variations in the refrigerator compartment 11 occur.
[0066]
For example, if the discharge portion 70b is arranged on the central passage 28a, the temperature variation becomes larger. In this embodiment, the discharge portion 70b is disposed between the rib 28d forming the side wall of the central passage 28a and the side wall of the refrigerator compartment 11. Almost in the center. As a result, the region including the front of the side passage 28b and the vicinity of the side wall of the refrigerator compartment 11 is cooled by the cool air from the discharge section 70b, so that the temperature variation is reduced and cooling by more uniform cooling heat release is performed. be able to. Further, the member 42 can take the maximum size in consideration of the arrangement of the discharge portion 70b, and the inside of the refrigerator compartment 11 can be cooled more uniformly by discharging the cold air from both the discharge portions 70b and releasing the cold heat of the member 42. .
[0067]
Further, the member 42 may be a cold storage member in which a jelly-like or liquid cold insulating material 42a as shown in FIG. 6 is enclosed by packaging materials 42b and 42c. If it does in this way, the member 42 will be cold-stored more by the cold heat | fever of the cold air which distribute | circulates the inside of the cold passage 28, and it discharge | releases as cold heat according to the temperature distribution in the refrigerator compartment 11. FIG. Therefore, the refrigerator compartment 11 is cooled uniformly.
[0068]
Furthermore, the cool storage member can absorb heat and dissipate heat when the compressor 20 is stopped or the temperature of the cool air passage 28 fluctuates, so that the cool air temperature in the cool air passage 28 can be maintained. At this time, since the cold storage member forms the inner wall of the refrigerator compartment 11, the space of the refrigerator compartment 11 can be widened, and the space saving of the refrigerator 1 can be achieved. More preferably, the packaging materials 42b and 42c are made of an aluminum alloy or stainless steel having thermal conductivity.
[0069]
Further, the cold air generated at a low temperature by the cooler 25 is slightly heated by mixing with the air in the refrigerator compartment 11. Thereby, the dew condensation and icing which arise in the member 42 and the ceiling discharge opening 43a vicinity can be prevented more, and drying of the refrigerator compartment 11 and the vegetable compartment 12 can be prevented.
[0070]
Furthermore, by providing a cooler 25 that cools the refrigerator compartment 11 and the vegetable compartment 12 and a cooler 21 that cools the freezer compartment 13, the temperature of the cold air flowing through the cold air passages 27 and 28 is changed to the temperature of the cold air inside the cold air passage 23. It can be set higher. Thereby, the dew condensation and freezing which generate | occur | produce on the member 42 can be prevented more.
[0071]
Further, the member 42 is erected on the back surface of the refrigerator compartment 11 and extends in the vertical direction. For this reason, when the heat insulation door 3 is frequently opened and closed and the temperature and humidity in the refrigerator compartment 11 are extremely increased, even if condensation occurs on the member 42 and water droplets are generated, they are not directly dropped on the stored items. Therefore, a good preservation state can be maintained without damaging the stored product.
[0072]
At this time, when the blowing of the cold air in the cold air passage 28 cooled by the cooler 25 is stopped, the member 42 approaches the temperature in the refrigerator compartment 11 and the inside of the refrigerator compartment 11 is dried due to the temperature rise. Thereby, part of the water droplets evaporates while flowing down the member 42 and the back plate 35. Therefore, the humidity in the refrigerator compartment 11 can be raised again. Furthermore, if a fence-like protective wall having a porous shape (for example, an oval hole, a round hole, etc.) capable of air circulation is provided in front of the member 42, the member 42 can be further thinned. It also prevents sticking and breakage.
[0073]
Next, FIG. 9 is a side sectional view showing the refrigerator of the second embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. In the refrigerator 1, an inner box 2b is arranged inside an outer box 2a that covers the outside, and a gap between the outer box 2a and the inner box 2b is filled with a heat insulating material 2c such as urethane foam.
[0074]
Reference numeral 1a denotes an electrical box including a control device 1b for controlling the operation of the refrigerator 1, and the control device 1b is electrically connected to each electrical component described later of the refrigerator 1. Moreover, the inside of the refrigerator 1 is divided into the refrigerator compartment 11, the vegetable compartment 12, and the freezer compartment 13 in order from the top.
[0075]
The vegetable compartment 12 and the freezer compartment 13 are partitioned by a partition frame 17 made of a heat insulating member and a partition plate 19 made of a heat insulating member, and the freezer compartment 13 is further partitioned into an upper part and a lower part by a partition frame 18 made of a heat insulating member. . The refrigerator compartment 11 and the vegetable compartment 12 are partitioned by a partition frame 16 made of a heat insulating member and partition plates 31 and 32 made of a resin molded product. The partition plate 32 is provided with a through hole 32a.
[0076]
An ice greenhouse 14, which is an isolation room partitioned by a partition plate 46, is provided at the lower part of the refrigerator compartment 11. The refrigerator compartment 11 is provided with a plurality of shelves 45. The front surface of the refrigerator compartment 11 can be opened and closed by a rotating heat insulating door 3. The upper part of the vegetable compartment 12, the freezer compartment 13, and the lower part of the freezer compartment 13 can be opened / closed by heat-insulating doors 4, 5, 6 with sliding front surfaces, respectively, and the storage containers 54, 55, 56 can be drawn out. ing.
[0077]
A compressor 20 is disposed at the rear of the freezer compartment 13. A condenser (not shown) is connected to the compressor 20 via a discharge pipe 20a, and a cooler 21 is connected via a suction pipe 20b. The condenser and the cooler 21 are connected via a capillary tube (not shown).
[0078]
Thus, a refrigeration cycle is configured, and the cooler 21 is cooled when the refrigeration cycle operation is performed. A defrost heater 62 that defrosts the cooler 21 is provided below the cooler 21. Reference numeral 64 denotes a drain receiving member.
[0079]
The cooler 21 is disposed in the cool air passage 23, and the lower portion of the cool air passage 23 is formed by an inner box 2b and an evaporative cover 33 made of a resin molded product. A blower 22 is disposed above the cooler 21 in the cool air passage 23. The cold air passage 23 communicates with the freezer compartment 13 through discharge ports 13a and 13c provided in the back plate 33a and a return port 13b provided in the return port cover 33b.
[0080]
The back of the vegetable compartment 12 is covered with the aforementioned partition plate 19, and the pressure chamber 23 a above the cool air passage 23 is formed by the evaporation cover 33 and the partition plate 19. The partition plate 19 made of a heat insulating member prevents overcooling of the vegetable compartment 12 provided in the vicinity of the cooler 21.
[0081]
The cold air passage 23 communicates with a cold air passage 28 disposed above the blower 22 via a damper 65. The lower part of the cold air passage 28 is formed by a heat insulating member 36 fixed to the back plate 35 of the ice greenhouse 14 and the inner box 2b. As shown in FIG. 10, the back plate 35 and the heat insulating member 36 are provided with openings 35 a and 36 a at the same position. The ice greenhouse 14 communicates with the cold air passage 28 through the openings 35a and 36a.
[0082]
The cold air passage 28 is branched by a rib 28d into a central passage 28a disposed substantially at the center and side passages 28b provided on both sides of the central passage 28a. The ribs 28d are formed integrally with a back plate 70 described later.
[0083]
The upper portion of the cold air passage 28 is formed by a member 42 that forms the inner wall of the refrigerator compartment 11 and a back plate 70 provided on the inner box 2b. As in the first embodiment, the member 42 is formed of a heat conductive member having heat conductivity such as an aluminum alloy or stainless steel.
[0084]
In the refrigerator compartment 11, as in FIG. 4 described above, a heat insulating member 28 c is arranged on the inner surface of the member 42 covering the side passage 28 b so that most of the cold heat of the cold air passing through the side passage 28 b is not transmitted to the member 42. ing. A side wall of the side passage 28b is formed by a back plate 70, and a plurality of openings 70a are provided on the side wall.
[0085]
A wall surface portion 70 c that covers the outer periphery of the member 42 is formed on the back plate 70. A plurality of discharge portions 70b communicating with the opening 70a are recessed in the wall surface portion 70c. Accordingly, the side passage 28b communicates with the refrigerating chamber 11 by the discharge portion 70b and the opening 70a, and the cool air can be discharged into the refrigerating chamber 11.
[0086]
The wall surface portion 70c is formed in the vicinity of the same height as the shelf 45 placed on the placement portion 74, so that food or the like placed on the shelf 45 does not fall onto the discharge portion 70b. The back plate 70 is formed with ribs 70d that guide the cool air to the discharge part 70b. The opening 70a has a slit shape so that the stored item does not fall into the side passage 28b. In FIG. 10, the shelf 45 and the partition plate 46 are drawn by a two-dot chain line for easy understanding of the rear thereof.
[0087]
The refrigerator compartment 11 is divided into a plurality of shelves 45, and a temperature detecting means 75 is provided above the discharge part 70b in the compartment from the center in the vertical direction. The temperature detecting means 75 is made of, for example, a thermistor, and projects the wall surface portion 70c of the back plate 70 and a part of the wall surface portion 70c to the refrigerating chamber 11 side, and the back side of the opening 70e in which the portion is opened in a slit shape The temperature detection means 75 is attached near (inner box 2b side).
[0088]
A ceiling duct 54 is formed on the ceiling portion of the refrigerator compartment 11 by an upper plate 43 made of a resin molded product and the inner box 2b. The ceiling duct 54 is arranged side by side and communicates with the central passage 28a. The cold air passing through the central passage 28 a is diffused left and right by ribs 70 g formed on the back plate 70 and guided to the ceiling duct 54.
[0089]
And it can disperse | distribute left and right by the ceiling discharge port 43a provided in the upper surface board 43, and can discharge cold air | gas. An illumination lamp 51 covered with a transparent illumination cover 53 is provided between the left and right ceiling ducts 54.
[0090]
In the refrigerator 1 having the above-described configuration, the internal temperature of the freezer compartment 13 rises, and the temperature detected by temperature detection means (not shown) provided in the freezer compartment 13 exceeds a predetermined temperature (for example, −18 ° C.). When the compressor 20 and the blower 22 are driven by the control device 1b, the air in the freezer compartment 13 is guided to the cold air passage 23 from the return port 13b. The air is cooled by exchanging heat with the cooler 21 and flows into the freezer compartment 13 through the discharge ports 13a and 13c. Thereby, the inside of the freezer compartment 13 is cooled to a predetermined temperature.
[0091]
Further, when the internal temperature of the refrigerator compartment 11 rises and the temperature detected by the temperature detecting means 75 provided on the back surface of the refrigerator compartment 11 exceeds a predetermined temperature (for example, 5 ° C.), the controller 1b is informed. When the compressor 20 and the blower 22 are driven and the damper 65 is opened, the cold air exchanged with the cooler 21 flows through the cooling passage 28 via the damper 65, and a part of the cold air is an opening portion. It flows into the ice greenhouse 14 from 35a, 36a. Thereby, the inside of the ice greenhouse 14 is cooled to −1 ° C., for example.
[0092]
The other cold air branches into the central passage 28a and the side passage 28b and proceeds. The cold air passing through the side passage 28b is guided by the rib 70d and discharged from the discharge portion 70b into the refrigerator compartment. The cold air passing through the central passage 28a passes through the ceiling duct 54 and is discharged from the ceiling outlet 43a.
[0093]
A part of the cold heat generated by the cold air flowing through the central passage 28a is transmitted to the member 42, and is released as cold heat from the entire surface including the front surface of the side passage 28b. Therefore, the inside of the refrigerator compartment 11 is efficiently and uniformly cooled by the cold heat from the member 42 and the cold air dispersed and discharged from the discharge portion 70b and the ceiling discharge port 43a.
[0094]
The air in the refrigerator compartment 11 passes between the shelves 45 and the front of the shelves 45, circulates through the cold air passage 30 from below the ice greenhouse 14 through the opening 32 a, and flows into the front of the vegetable compartment 12. Furthermore, the inside of the vegetable compartment 12 is cooled through the lower side from the front surface of the storage container 54. Then, the cool air circulates from the outlet (not shown) through the duct (not shown) to the lower part of the cooler 21. The damper 65 opens and closes according to the temperature (in the refrigerator compartment 11) detected by the temperature detecting means 75 similar to that in FIG. 2, and the temperature of the refrigerator compartment 11 and the vegetable compartment 12 is maintained at 3 ° C., for example. .
[0095]
According to the present embodiment, as in the first embodiment, the member 42 functions as a heat conduction plate that conducts a part of the cold air passing through the central passage 28 a and releases it into the refrigerating chamber 11. Therefore, the refrigerator compartment 11 is uniformly cooled by the cold heat uniformly discharged from a large area.
[0096]
At this time, most of the cold heat is not transmitted to the member 42 from the cold air passing through the side passage 28b by the heat insulating member 28c. For this reason, even if a lot of cool air flows through the cool air passage 27, condensation does not occur in the member 42 and the discharge portion 70b. By changing the area where the heat insulating member 28c is installed, cold air having a desired temperature and flow rate can be circulated.
[0097]
Further, by providing the discharge portion 70b around the outside of the member 42, it is possible to improve aesthetics, prevent noise, emit uniform cold heat from the entire surface, and use the light widely as a light reflecting surface. And since the discharge part 70b is distribute | arranged to the approximate center between the rib 28d which comprises the side wall of the center channel | path 28a, and the side wall of the refrigerator compartment 11, temperature variation is reduced and more uniform cooling can be performed. The member 42 may be a cold storage member as shown in FIG.
[0098]
When the blower 29 shown in FIG. 3 is provided in the central passage 28a of the present embodiment, the cold air in the refrigerator compartment 11 and the cold air passing through the central passage 28a are mixed, and the same effect as in the first embodiment can be obtained. it can.
[0099]
Since the temperature detecting means 75 and the shielding rib 70f are provided above the discharge portion 70b around the member 42, the member 42 can be provided in a wide area without an opening for cold air discharge or temperature detection. The entire surface of the member 42 is useful for releasing uniform cold heat, the inside temperature is uniform, and the light reflecting surface can be used in a wide range. Further, with respect to the temperature detecting means 75, the temperature of the member 42 can be reduced. It is difficult to be affected by the cool air discharged to the refrigerator, the accurate temperature inside the refrigerator can be detected, and a refrigerator that can keep the interior at a more appropriate temperature can be obtained.
[0100]
Further, since the temperature detecting means 75 has the left-right direction as the longitudinal direction, the area of the temperature detecting means 75 in the vertical direction can be reduced, and the area where the discharge port is located can be widened. 70b is provided, and the inside temperature is made uniform, and the upper wall surface portion communicating with the opening portion 70a of the discharge portion 70b is slightly inclined so as to become lower toward the discharge portion 70b side. Accordingly, the discharged cool air flows downward, and further, the influence of the cool air on the temperature detecting means 75 provided above is eliminated, and the inside of the cabinet can be kept at a more appropriate temperature.
[0101]
The first and second embodiments are embodiments in which the cold air passage 28 is divided into three parts, that is, the central passage 28a and the two side passages 28b, but the cold air passage 28 is divided into four or more branch passages. The same effect can be obtained even when a heat insulating material is provided at an appropriate position according to the amount of cold air supplied. For example, the cold air passage 28 is divided into five parts, and a heat insulating member is provided in the same manner as described above in addition to the central part. And you may make it cool air which goes up through the channel | path of the center side among 2 channel | paths of right and left to descend | fall through the channel | path outside, and to discharge in the refrigerator compartment 11. FIG.
[0102]
The ice greenhouse 14 may be an isolation room (for example: partial room = −3 ° C., vegetable room = 3 ° C.) in another temperature zone by adjusting the amount of cold air.
[0103]
In the present invention, when a part of the cold due to the cold air passing through the cold air passage is released into the storage chamber through the member, a part of the cold air passing through the cold air passage absorbs heat from the member to cool the member, It means that the member absorbs heat from the storage chamber and cools the storage chamber.
[0104]
Moreover, 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-rear direction when the refrigerator is viewed from the front.
[0105]
【The invention's effect】
According to the present invention, a part of the cold heat of the cold air passing through the cold air passage is transmitted to the member composed of the cold storage member and the heat conduction member, and is discharged from the entire surface into the storage chamber. Therefore, the storage chamber is uniformly cooled by the cold heat uniformly discharged from a large area. In addition, since there is no temperature detection means in the member, the member can be provided in a wide area, the cooling efficiency is improved, and the temperature detection means is not easily affected by the cold of the member, so that the storage can be performed more accurately. The internal temperature can be detected and the interior can be kept at a more appropriate temperature.
[0106]
Further, according to the present invention, part of the cold heat of the cold air passing through the cold air passage is transmitted to a member having a larger area including a cold storage member and a heat conduction member, and discharged from the entire surface into the storage chamber. Accordingly, the storage chamber is uniformly cooled by the cold heat that is uniformly discharged from a larger area. In addition, since the temperature detection means is located above the cold air discharge port around the member, the member can be provided in a wide area, and the cooling efficiency is further improved. Further, the temperature detection means is affected by the cold of the member or the discharged cold air. Because it is hard to receive, it can detect the more accurate inside temperature and keep the inside temperature more appropriate.
[0107]
Further, according to the present invention, the discharge port is provided in accordance with the conditions in the section divided into appropriate spaces on the shelf, and the temperature detection means is provided above the discharge port closer to the center in the vertical direction. Since the temperature detection means is not easily affected by the cold of the member or the exhaled cold air, a more accurate average inside temperature can be detected, and the temperature detection means above the cold air outlet around the member A member can be provided in the region, and the cooling efficiency is further improved. The storage chamber is further uniformly cooled to an appropriate temperature by the cold heat discharged from the entire surface of the member into the storage chamber and the cool air from the discharge port.
[0108]
Further, according to the present invention, the area in the vertical direction of the temperature detecting means can be reduced, the area where the discharge port is located can be widened, the discharge port is provided according to the conditions, and the internal temperature can be made uniform.
[0109]
In addition, according to the present invention, the upper side of the passage of the discharge port provided with the temperature detection means is inclined downward toward the front, so that the discharged cool air flows downward, and The influence of the cold air on the temperature detection means is eliminated, and the interior can be kept at an appropriate temperature.
[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 of the refrigerator compartment of the refrigerator according to the first embodiment of the present invention.
FIG. 3 is a detailed view of a main part of the refrigerator according to the first embodiment of the present invention.
FIG. 4 is a top sectional view of the refrigerator according to the first embodiment of the present invention.
FIG. 5 is a perspective view showing members of the refrigerator according to the first embodiment of the present invention.
FIG. 6 is a perspective view showing another member of the refrigerator according to the first embodiment of the present invention.
FIG. 7 is a cross-sectional view of a main part of a member of the refrigerator according to the first embodiment of the present invention.
FIG. 8 is a cross-sectional view of a main part of the refrigerator member according to the first embodiment of the present invention.
FIG. 9 is a side sectional view of a refrigerator according to a second embodiment of the present invention.
FIG. 10 is a front view of a refrigerator compartment of a refrigerator according to a second embodiment of the present invention.
[Explanation of symbols]
11 Refrigerated room (storage room)
21, 25 Cooler
23, 27, 28, 30 Cold air passage
42 members
45 shelves
70b Discharge part (discharge port)
75 Temperature detection means

Claims

A storage chamber for storing stored items; a cooler for generating cold air flowing into the storage chamber; a cold air passage adjacent to the storage chamber and provided with the cooler to guide the cold air to the storage chamber; a member that emits cold by cold air flowing through the cool air passage into the storage compartment, and said cool air passage and the reservoir chamber together is provided in the storage compartment side between said cooler and said member of said cool air passage A heat insulating member that insulates the left and right sides of the member, a discharge port that discharges cold air flowing through the cooling passage to the storage chamber, and an upper side adjacent to the one discharge port and a side of the member And a temperature detecting means for detecting the temperature of the storage room .

A storage chamber for storing stored items; a cooler for generating cold air flowing into the storage chamber; a cold air passage adjacent to the storage chamber and provided with the cooler to guide the cold air to the storage chamber; a member that emits cold by cold air flowing through the cool air passage into the storage chamber, and the heat insulating member to insulate and said cool air passage and the reservoir chamber together provided on both sides of the cool air passage-side of the member, the A discharge port for discharging cool air flowing through the cooling passage to the right and left of the member to the storage chamber; and an upper portion adjacent to the one discharge port and on a side of the member to A refrigerator comprising temperature detecting means for detecting temperature .

The refrigerator according to claim 1 or claim 2, characterized in that inclined downward toward the upper side of the discharge port of the passage that is disposed below the temperature detecting means forward.

The refrigerator according to any one of claims 1 to 3, wherein the member is detachably provided .