【０００１】
【発明の属する技術分野】
本発明は、前面に開口した冷蔵庫本体内を仕切って複数の貯蔵室が形成され前記冷蔵庫本体の下部には冷却システムの電動圧縮機と凝縮器が配置された機械室が形成された冷蔵庫に関する。
【０００２】
【従来の技術】
前面に開口した冷蔵庫本体内を仕切って複数の貯蔵室が形成され前記冷蔵庫本体の下部には冷却システムの電動圧縮機と凝縮器が配置された機械室が形成された冷蔵庫において、冷蔵庫本体の背面左右の稜部に切り欠き形状によって機械室の空気が上昇する上下方向の空気通路を形成した冷蔵庫に係る技術がある（例えば、特許文献１、特許文献２参照）。
【０００３】
最近の冷蔵庫は液晶表示器を冷蔵庫の前面扉に配置して、冷蔵室や冷凍室の温度表示や時計表示に限らず、タイマー表示や、急速冷凍モード、急速製氷モード、冷蔵室の除菌モード、自動製氷機の清掃モード及び節電モード等の表示、さらにはレシピ等の表示もできるようにしている。これらの制御がマイクロコンピュータ方式によって行われるため、冷蔵庫の電気回路部品が多くなり、これらの部品を取り付ける基板も大きくなる。従来、図４に示すように、冷蔵庫本体の背面中央部に大きな収納凹部を形成して、ここにこの基板を収納する形態が採られている。
【０００４】
図４のような形態においては、冷蔵庫本体背面中央部に収納凹部が配置されることにより、収納凹部の深さだけ冷蔵庫本体の背面の断熱厚さが薄くなるため、断熱効果が低下する。この断熱効果の低下を防止するために、冷蔵庫本体背壁部分の断熱厚みを厚くする必要が生じ、冷蔵庫の外形寸法を大きくしない場合には庫内容積が減少するという問題が生じる。また、最近の冷蔵庫は、断熱効果の向上のために真空断熱材が採用される（例えば、特許文献３参照）が、図４のような形態においては、基板の収納凹部によってこの真空断熱材を冷蔵庫の背壁に広く配置することができず、この背壁部分の断熱効果が低下する。このため、背壁部分の断熱厚みを厚くする必要が生じ、冷蔵庫の外形寸法を大きくしない場合には、庫内容積が減少するという問題が生じる。
【０００５】
【特許文献１】
特開２００２−１０７０４２号公報（第１〜３頁、図１〜３）
【特許文献２】
特公平４−７１１４９号公報（第１〜５頁、図１０〜１１）
【特許文献３】
特開平１０−２０５９９５号公報（第３〜４頁、図３〜５）
【０００６】
【発明が解決しようとする課題】
本発明は、このような問題点に鑑み、冷蔵庫の背面を台所等の部屋の壁に近接又は当接させて設置できる冷蔵庫の効果を損なわないように、機械室の空気の排気通路を確保して機械室の圧縮機や凝縮器の放熱効果を得ると共に、冷蔵庫本体の貯蔵室の冷却に悪影響を与えない部分に電気回路部品が取り付けられた電装部の収納部を形成するものである。
【０００７】
【課題を解決するための手段】
本発明の冷蔵庫は、前面に開口した冷蔵庫本体内を仕切って複数の貯蔵室が形成され前記冷蔵庫本体の下部には冷却システムの電動圧縮機と凝縮器が配置された機械室が形成された冷蔵庫において、前記冷蔵庫本体背面の左右稜部のうちの一方の稜部に沿った部分には、前記機械室の空気が上昇する上下方向の空気通路が切り欠き形状に形成され、他方の稜部に沿った部分には冷蔵庫の電気回路部品が取り付けられた電装部の収納凹部が上下方向に長く形成されたことを特徴とする。
【０００８】
これによって、前記機械室の空気は、前記冷蔵庫本体の背面左右の稜部のうちの一方の稜部に形成された上下方向の空気通路から排気されて、機械室の圧縮機や凝縮器の放熱効果が得られる。また、断熱厚みの厚い他方の稜部には電装部が上下方向に長く収納されるため、冷蔵庫本体の貯蔵室の冷却に悪影響を与えない部分に電装部を収納できる。このため、冷蔵庫の背面を台所等の部屋の壁に近接又は当接させて設置できる冷蔵庫の効果を損なわない。
【０００９】
また、本発明の冷蔵庫は、前面に開口した冷蔵庫本体内を仕切って複数の貯蔵室が形成され前記冷蔵庫本体の下部には冷却システムの電動圧縮機と凝縮器が配置された機械室が形成された冷蔵庫において、前記冷蔵庫本体背面の左右稜部のうちの一方の稜部に沿った部分には、前記機械室の空気が上昇する上下方向の空気通路が切り欠き形状に形成され、他方の稜部に沿った部分には冷蔵庫の電気回路部品が取り付けられた電装部の収納凹部が上下方向に長く形成され、前記冷蔵庫本体の背壁の断熱材中にはこの背壁の上部から下部に渡る範囲に真空断熱材を配置したことを特徴とする。
【００１０】
これによって、前記機械室の空気は、送風機によって冷蔵庫本体の底面と前面側の吸い込み口から吸い込まれて、前記冷蔵庫本体の背面左右の稜部のうちの一方の稜部に形成された上下方向の空気通路から排気されて、機械室の圧縮機や凝縮器の放熱効果が得られる。また、断熱厚みの厚い他方の稜部には電装部が上下方向に長く収納されるため、冷蔵庫本体の貯蔵室の冷却に悪影響を与えない部分に電装部を収納できる。このため、冷蔵庫の背面を台所等の部屋の壁に近接又は当接させて設置できる冷蔵庫の効果を損なわない。更に、真空断熱材を冷蔵庫の背壁中の広い面積に配置できるため、冷蔵庫の断熱効果の向上として大きな効果が期待できる。
【００１１】
また、本発明の冷蔵庫は、前記冷蔵庫本体背面の左右稜部に沿って上下に配置した発泡断熱材の充填用孔を設け、前記収納凹部は、この上下配置の充填用孔の間に配置されたことを特徴とする。このため、上記の効果に加えて、充填用孔から充填される発泡断熱材は、収納凹部の裏側部分を含む外箱（外壁板）と内箱（内壁板）との間に良好に充填される。
【００１２】
また本発明の冷蔵庫は、前記収納凹部の深さが冷蔵庫の左右幅方向の中心に向かって徐々に浅くなる構成であり、前記収納凹部に収納される電気回路部品は、冷蔵庫の左右幅方向の中心に向かって高さが低くなる順に配置されたことを特徴とする。これによって、上記の効果に加えて、収納凹部の背面開口を閉じる蓋が冷蔵庫の背面側へ突出することが抑制されるため、背面が略フラットな冷蔵庫を提供できることとなり、台所等の壁に当接又は近接した設置が可能な冷蔵庫となる。
【００１３】
【発明の実施の形態】
次に、本発明冷蔵庫の実施の形態について説明する。各図は本発明の実施形態を示しており、図１は本発明に係る冷蔵庫の縦断側面図、図２は本発明に係る冷蔵庫の背面斜視図、図３は本発明に係る冷蔵庫の背壁左右部分の構成を示す横断平面図、図４は本発明に至る前の発明に係る冷蔵庫の背面斜視図である。
【００１４】
図において、１は冷蔵庫Ｒを構成する冷蔵庫本体であり、外箱（外壁板）３と内箱（内壁板）２との間に発泡断熱材４を充填した断熱構造である。前面に開口した冷蔵庫本体１内には、複数の貯蔵室として上から冷蔵室５、野菜室６、冷凍室７が仕切られて形成されている。冷蔵室５の前面開口は、冷蔵庫本体１の一側部にヒンジ装置にて横方向に回動して開閉される回動式扉１０にて閉塞される。野菜室６の前面開口は、野菜室６内に設けた左右のレールとローラの組み合わせによる引き出し装置８によって前後方向へ引き出し可能に支持した野菜貯蔵容器９と共に前方へ引き出される引き出し式扉１１にて閉塞されている。冷凍室７は野菜室６と同様に、冷凍室７内に設けた左右のレールとローラの組み合わせによる引き出し装置１３に対してそれぞれ前後方向へ引き出し可能に支持した容器１４と共に前方へ引き出される引き出し式扉１２にて閉塞されている。
【００１５】
１５は冷媒を圧縮する電動圧縮機、１６は冷媒の凝縮器、１７は冷媒を蒸発させる冷蔵室用蒸発器（冷却器）であり冷蔵室５の背部の冷気通路に設置されている。１８は冷媒を蒸発させる冷凍室用蒸発器（冷却器）であり冷凍室７の背部に設置されている。凝縮器１６で凝縮された冷媒は、それぞれ冷媒の減圧装置としてのキャピラリチューブを通って冷蔵室用蒸発器１７と冷凍室用蒸発器１８へ流入する。凝縮器１６を出た冷媒が冷蔵室用蒸発器１７と冷凍室用蒸発器１８のいずれか一方又は双方へ流れるかは、冷蔵室５と冷凍室７の温度を規定値に保つように三方切り替え弁によって制御される。これら符号１５〜１８の要素によって冷媒が循環する冷却システムが形成される。２２は冷蔵室用蒸発器１７で冷却した空気を冷蔵室５と野菜室６へ循環する電動送風機、２３は冷凍室用蒸発器１８で冷却した空気を冷凍室７へ循環する電動送風機である。
【００１６】
２７は冷蔵室用蒸発器１７の除霜水を受ける露受け部であり、野菜貯蔵容器９の後方位置で冷蔵庫本体１に設けられる。露受け部２７で受けた露は排水パイプ２８から蒸発皿２９へ導かれ、ここで凝縮器１６の熱によって蒸発する仕組みである。また、冷凍室用蒸発器（冷却器）１８の除霜水も排水パイプにて蒸発皿２９へ導かれ、そこで凝縮器１６の熱によって蒸発される。
【００１７】
野菜貯蔵容器９は、野菜室６の前面開口を開閉する扉１１と共に前方へ引き出し自在であり、通常の冷却運転サイクル中において野菜貯蔵容器９内の野菜の乾燥を防ぐために、扉１１を閉めた状態でこの野菜貯蔵容器９の上面開口が野菜室６の天井部に取り付けた上板２４によって略閉じられ、扉１１を引き出した状態で上面開口が開放されるように構成している。そして、野菜貯蔵容器９内は、主としてこの野菜貯蔵容器９の周囲に循環する冷気によって冷却される。
【００１８】
冷蔵室用蒸発器１７で冷却した空気は、電動送風機２２によって実線矢印の如く冷蔵室５の上方の通路から冷蔵室５の前面に吹き出されて冷蔵室５を冷却し、冷蔵室５と野菜室６との間に形成された冷気通路２５を流れて再び冷蔵室用蒸発器１７へ帰還する循環をする。この循環において、上板２４の前端部から冷気が野菜室６へ流入して野菜貯蔵容器９の周囲を流れた後、冷蔵室用蒸発器１７へ帰還する循環をする。
【００１９】
冷蔵庫本体１の下部に形成した機械室２０には、電動圧縮機１５と凝縮器１６が配置され、電動圧縮機１５と凝縮器１６の熱は、機械室２０に配置した送風機２１によって、機械室２０の前方から吸い込まれて後方へ排出される空気によって放熱される。
【００２０】
冷蔵庫本体１の背面３０の左右稜部のうちの一方の稜部に沿った部分には、機械室２０の空気が上昇する上下方向の空気通路３１が切り欠き形状に形成されている。具体的には、冷蔵庫本体１の外箱（外壁板）３の一部である背面板３Ａの左部分が、冷蔵庫本体１の外箱（外壁板）３の側面板３Ｂに向けて傾斜した面３Ｃを形成し、この傾斜した面３Ｃによって冷蔵庫本体１の背面３０と側面を台所等の壁面に沿って設置したとき、この台所等の壁面との間に横断面が三角形状のような空間が形成されるため、この空間が空気通路３１となる。
【００２１】
冷蔵庫本体１の背面３０の左右稜部のうちの他方の稜部に沿った部分には、空気通路３１のような通路は形成されておらず、そのために、冷蔵庫本体１の背面３０の右方側は略フラットであり、背面コーナ部の断熱厚みが厚い部分である。本発明では、この冷蔵庫本体１の背面３０の左右稜部のうち、空気通路３１となる稜部の他方の稜部に沿った部分に、冷蔵庫Ｒの電気回路部品３２が基板３４に取り付けられた電装部３３の収納凹部３５を上下方向に長く形成している。具体的には、冷蔵庫本体１の外箱（外壁板）３の一部である背面板３Ａの右部分を上下方向に長く断熱材４方向へ窪ませて、冷蔵庫Ｒの背面側に開口した収納凹部３５を形成している。収納凹部３５が形成される部分は冷蔵庫本体１の背面平面部の稜部に相当するため、外箱（外壁板）３と内箱（内壁板）２との間に充填した発泡断熱材４の厚みが厚い箇所である。４３は背面３０の左右稜部に沿って上下に配置した発泡断熱材４の充填用孔であり、収納凹部３５は、この上下配置の充填用孔４３の間に配置されている。このため、充填用孔４３から充填される発泡断熱材４は、収納凹部３５の裏側部分を含む外箱（外壁板）３と内箱（内壁板）２との間に良好に充填される。
【００２２】
この発泡断熱材４の厚みが厚い箇所に収納凹部３５を形成するため、この収納凹部３５の形成によって断熱効果が低下して冷蔵庫本体１内の冷えが悪くなることがない状態である。この好ましい形態として、図３に示すように収納凹部３５は、その底面は背面３０の右稜部に近接する側が深くなるように傾斜している。これによって、基板３４に取り付ける電気回路部品３２のうち、トランス等のように背の高い部品３２Ａを収納凹部３５の深い側に配置し、収納凹部３５の浅い側には背の低い部品３２Ｂを配置した収納状態としている。即ち、収納凹部３５の深さが冷蔵庫Ｒの左右幅方向の中心に向かって徐々に浅くなるように収納凹部３５の底面３５Ａを傾斜構成しており、収納凹部３５に収納される電気回路部品３２は、冷蔵庫Ｒの左右幅方向の中心に向かって高さが低くなる順に配置されている。これによって、収納凹部３５の背面開口を水密状態に閉じる蓋３６が冷蔵庫Ｒの背面側へ突出することが抑制されるため、背面が略フラットな冷蔵庫Ｒを提供できることとなり、台所等の壁に当接又は近接した設置が可能な冷蔵庫Ｒとなる。
【００２３】
機械室２０は、冷蔵庫本体１の前面側に空気の吸い込み口を備え、左右側面は冷蔵庫本体１の外箱（外壁板）３の左右側壁によって覆われており、背面側は蓋板４０によって覆われた構成である。この蓋板４０は、冷蔵庫本体１の背面板３Ａの傾斜した面３Ｃの形状に合わせて、その左側には傾斜した面４０Ｃが形成され、この傾斜した面４０Ｃの上下方向には、機械室２０内の温風が排出される複数の温風排出孔４１が形成されている。これによって、傾斜した面４０Ｃと３Ｃが略連続した空気通路３１を形成する。機械室２０内の空気は、送風機２１によって冷蔵庫本体１の底面と前面側の吸い込み口から吸い込まれて温風排出孔４１から排出され、空気通路３１を上昇して冷蔵庫Ｒの上方へ排出される。また、蓋板４０の右方の側は、傾斜した面４０Ｃと同様の傾斜した形状でもよいが、この蓋板４０上方の冷蔵庫本体１の背面３０の右方側は略フラットであるため、この形状に合わせた形状であってもよい。４２は電装部３３に接続したＡＣ電源用プラグである。
【００２４】
３７は真空断熱材であり、冷蔵庫本体１の背壁の断熱材４中に、この背壁の上部から下部に渡る範囲に配置されている。真空断熱材３７は、ガスの透過を阻止する多層ラミネート構造のフィルム（これを、ガスバリアフィルムという）の袋にシリカ、パーライト等の微粉末と、グラスファイバや連続気泡性の発泡ポリウレタン等からなる断熱材（これをコア材という）を収納し、このガスバリアフィルムの袋内を真空状態にして密封した構成である。具体的には、冷蔵庫本体１の外箱（外壁板）３の一部である背面板３Ａの内側に沿って、冷蔵室５、野菜室６及び冷凍室７の背面側に位置する広い範囲に存在する。
【００２５】
これによって、機械室２０の空気は、冷蔵庫本体１の背面左右の稜部のうちの一方の稜部に形成された上下方向の空気通路３１から排気されて、機械室２０の圧縮機１５や凝縮器１６の放熱効果が得られる。また、断熱厚みの厚い他方の稜部には電装部３３が上下方向に長く収納されるため、冷蔵庫本体１の貯蔵室の冷却に悪影響を与えない部分に電装部３３を収納できる。このため、冷蔵庫Ｒの背面３０を台所等の部屋の壁に近接又は当接させて設置できる冷蔵庫の効果を損なわない。また、冷蔵庫Ｒの背壁中央部に電装部の収納凹部を設ける場合に比して冷蔵庫Ｒの背壁の断熱厚みが薄くなることもない。更に、真空断熱材３７を冷蔵庫Ｒの背壁中の広い面積に配置できるため、冷蔵庫Ｒの断熱効果の向上として大きな効果が期待できる。
【００２６】
図４には本発明に至る前の発明に係る冷蔵庫Ｒの背面斜視図を示している。この冷蔵庫Ｒは、冷蔵庫本体１の背面３０の左右稜部に沿った部分に、機械室２０の空気が上昇する上下方向の空気通路３１が背面３０の傾斜した面３０Ｃによって形成されている。機械室２０の背面の蓋板４０にも、機械室２０内の温風が排出される複数の温風排出孔４１が形成された傾斜した面４０Ｃが形成され、傾斜した面３０Ｃと４０Ｃによって上下方向に空気通路３１が形成される。これによって、冷蔵庫本体１の背面３０の左右両側に空気通路３１が形成された構成である。冷蔵庫本体１の背面の中間部には、冷蔵庫Ｒの電気回路部品３２が基板３４に取り付けられた電装部３３の収納凹部３５が、左右の傾斜した面３０Ｃの間のフラット部分に長テ方向を上下方向にして形成している。収納凹部３５の背面開口は蓋３６によって水密状態に閉じられている。
【００２７】
図４の構成では、電装部３３の収納凹部３５の存在によって、真空断熱材３７は収納凹部３５の上方の冷蔵庫Ｒの背壁に配置されるため、本発明に比して真空断熱材３７の範囲が狭くなり、この背壁部分の断熱効果が低下する。このため、背壁部分の断熱厚みを厚くする必要が生じ、冷蔵庫Ｒの外形寸法を大きくしない場合には、庫内容積が減少するという問題が生じる。
【００２８】
図示した上記の構成では、空気通路３１が左側に形成され、電装部３３の収納凹部３５が右側に形成されたが、空気通路３１を右側に形成し、電装部３３の収納凹部３５を左側に形成した構成でも、本発明の範囲を逸脱するものではなく、上記と同様の効果が期待できる。
【００２９】
本発明は特許請求の範囲に記載した事項によって特徴を有する。このため、上記実施形態に限定されるものではなく、その範囲を逸脱しない部分における種種の実施形態を包含するものである。
【００３０】
【発明の効果】
本発明によれば、機械室の空気は、冷蔵庫本体の背面左右の稜部のうちの一方の稜部に形成された上下方向の空気通路から排気されて、機械室の圧縮機や凝縮器の放熱効果が得られる。また、断熱厚みの厚い他方の稜部には電装部が上下方向に長く収納されるため、冷蔵庫本体の貯蔵室の冷却に悪影響を与えない部分に電装部を収納できる。このため、冷蔵庫の背面を台所等の部屋の壁に近接又は当接させて設置できる冷蔵庫の効果を損なわない。
【００３１】
また、請求項２の発明によって、機械室の空気は、冷蔵庫本体の背面左右の稜部のうちの一方の稜部に形成された上下方向の空気通路から排気されて、機械室の圧縮機や凝縮器の放熱効果が得られる。また、断熱厚みの厚い他方の稜部には電装部が上下方向に長く収納されるため、冷蔵庫本体の貯蔵室の冷却に悪影響を与えない部分に電装部を収納できる。このため、冷蔵庫の背面を台所等の部屋の壁に近接又は当接させて設置できる冷蔵庫の効果を損なわない。更に、真空断熱材を冷蔵庫の背壁中の広い面積に配置できるため、冷蔵庫の断熱効果の向上として大きな効果が期待できる。
【００３２】
また、請求項３の発明によって、上記の効果に加えて、充填用孔から充填される発泡断熱材は、収納凹部の裏側部分を含む外箱（外壁板）と内箱（内壁板）との間に良好に充填される。
【００３３】
また、請求項４の発明によって、上記の効果に加えて、収納凹部の背面開口を閉じる蓋が冷蔵庫の背面側へ突出することが抑制されるため、背面が略フラットな冷蔵庫を提供できることとなり、台所等の壁に当接又は近接した設置が可能な冷蔵庫となる。
【図面の簡単な説明】
【図１】本発明に係る冷蔵庫の縦断側面図である。
【図２】本発明に係る冷蔵庫の背面斜視図である。
【図３】本発明に係る冷蔵庫の背壁左右部分の構成を示す横断平面図である。
【図４】本発明に至る前の発明に係る冷蔵庫の背面斜視図である。
【符号の説明】
１・・・冷蔵庫本体
２・・・内箱（内壁板）
３・・・外箱（外壁板）
３Ａ・・・外箱（外壁板）の背面板
３Ｃ・・・傾斜した面
４・・・発泡断熱材
５・・・冷蔵室
６・・・野菜室
７・・・冷凍室
１５・・・圧縮機
１６・・・凝縮器
２１・・・送風機
３１・・・空気通路
３２・・・気回路部品
３３・・・電装部
３４・・・基板
３５・・・収納凹部
３６・・・蓋
３７・・・真空断熱材
４０・・・機械室の蓋板
４３・・・発泡断熱材の充填用孔[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a refrigerator in which a plurality of storage compartments are formed by partitioning the inside of a refrigerator main body having an open front, and a machine room in which an electric compressor and a condenser of a cooling system are arranged is formed below the refrigerator main body.
[0002]
[Prior art]
A refrigerator in which a plurality of storage rooms are formed by partitioning the inside of a refrigerator body opened to the front and a machine room in which an electric compressor and a condenser of a cooling system are arranged at a lower part of the refrigerator body is formed. There is a technology related to a refrigerator in which a vertical air passage in which air in a machine room rises is formed by cutout shapes at left and right ridges (for example, see Patent Documents 1 and 2).
[0003]
In recent refrigerators, a liquid crystal display is placed on the front door of the refrigerator, and not only the temperature display and clock display of the refrigerator and freezer compartments, but also the timer display, rapid freezing mode, rapid ice making mode, and disinfection mode of the refrigerator compartment In addition, it is possible to display the cleaning mode and the power saving mode of the automatic ice maker, and also display the recipe and the like. Since these controls are performed by the microcomputer system, the number of electric circuit components of the refrigerator increases, and the size of the substrate on which these components are mounted also increases. Conventionally, as shown in FIG. 4, a large accommodating recess is formed in the center of the rear surface of the refrigerator main body, and the substrate is accommodated here.
[0004]
In the embodiment as shown in FIG. 4, since the storage recess is arranged at the center of the rear surface of the refrigerator main body, the heat insulation thickness of the rear surface of the refrigerator main body is reduced by the depth of the storage recess, and the heat insulating effect is reduced. In order to prevent this decrease in the heat insulating effect, it is necessary to increase the heat insulating thickness of the back wall portion of the refrigerator main body, and if the external dimensions of the refrigerator are not increased, the capacity of the refrigerator decreases. In recent refrigerators, a vacuum heat insulating material is employed to improve the heat insulating effect (see, for example, Patent Document 3). However, in the embodiment shown in FIG. It cannot be widely arranged on the back wall of the refrigerator, and the heat insulating effect of this back wall portion is reduced. For this reason, it is necessary to increase the heat insulation thickness of the back wall portion, and if the external dimensions of the refrigerator are not increased, there is a problem that the internal volume of the refrigerator is reduced.
[0005]
[Patent Document 1]
JP 2002-107042 A (pages 1 to 3, FIGS. 1 to 3)
[Patent Document 2]
Japanese Patent Publication No. 4-71149 (pages 1 to 5, FIGS. 10 to 11)
[Patent Document 3]
JP-A-10-205995 (pages 3 and 4, FIGS. 3 to 5)
[0006]
[Problems to be solved by the invention]
The present invention has been made in view of such a problem, and secures an exhaust passage of air in a machine room so as not to impair the effect of a refrigerator that can be installed with a rear surface of a refrigerator close to or in contact with a wall of a room such as a kitchen. In addition to obtaining the heat radiating effect of the compressor and the condenser in the machine room, a storage part of the electrical component part in which the electric circuit component is attached is formed in a portion that does not adversely affect the cooling of the storage room of the refrigerator body.
[0007]
[Means for Solving the Problems]
The refrigerator of the present invention is a refrigerator in which a plurality of storage rooms are formed by partitioning the inside of a refrigerator body opened on the front surface, and a machine room in which an electric compressor and a condenser of a cooling system are arranged is formed below the refrigerator body. In the portion along one of the left and right ridges on the back side of the refrigerator body, a vertical air passage through which the air in the machine room rises is formed in a cutout shape, and the other ridge is formed on the other ridge. Along the vertical portion, a storage recess of an electrical component part to which an electric circuit component of the refrigerator is attached is formed to be long in the vertical direction.
[0008]
Accordingly, the air in the machine room is exhausted from a vertical air passage formed on one of the left and right ridges on the rear surface of the refrigerator body, and the heat of the compressor and the condenser in the machine room is radiated. The effect is obtained. In addition, since the electrical component is accommodated vertically in the other ridge having a large heat insulation thickness, the electrical component can be accommodated in a portion that does not adversely affect the cooling of the storage room of the refrigerator body. For this reason, the effect of the refrigerator that can be installed with the back surface of the refrigerator close to or in contact with the wall of a room such as a kitchen is not impaired.
[0009]
In addition, the refrigerator of the present invention has a plurality of storage compartments formed by partitioning the inside of the refrigerator compartment opened on the front surface, and a machine compartment in which an electric compressor and a condenser of a cooling system are arranged at a lower portion of the refrigerator compartment. In the refrigerator, a vertical air passage through which air in the machine room rises is formed in a cutout shape at a portion along one of the left and right ridges on the rear surface of the refrigerator body, and the other ridge is formed. The storage recess of the electrical component part to which the electric circuit component of the refrigerator is attached is formed in the part along the part vertically long, and extends from the upper part to the lower part of the heat insulating material of the back wall of the refrigerator body. A vacuum heat insulating material is arranged in the range.
[0010]
Thereby, the air in the machine room is sucked by the blower from the suction port on the bottom surface and the front side of the refrigerator main body, and the air in the vertical direction formed on one of the left and right ridges on the rear surface of the refrigerator main body. The air is exhausted from the air passage, and the heat radiation effect of the compressor and the condenser in the machine room is obtained. In addition, since the electrical component is accommodated vertically in the other ridge having a large heat insulation thickness, the electrical component can be accommodated in a portion that does not adversely affect the cooling of the storage room of the refrigerator body. For this reason, the effect of the refrigerator that can be installed with the back surface of the refrigerator close to or in contact with the wall of a room such as a kitchen is not impaired. Further, since the vacuum heat insulating material can be arranged in a large area on the back wall of the refrigerator, a great effect can be expected as an improvement in the heat insulating effect of the refrigerator.
[0011]
Further, the refrigerator of the present invention is provided with filling holes for foamed heat insulating material arranged vertically along the left and right ridges on the back of the refrigerator main body, and the storage recess is disposed between the vertically arranged filling holes. It is characterized by having. For this reason, in addition to the above effects, the foam insulation material filled from the filling hole is well filled between the outer box (outer wall plate) and the inner box (inner wall plate) including the back side of the storage recess. You.
[0012]
Further, the refrigerator of the present invention is configured such that the depth of the storage recess gradually decreases toward the center of the refrigerator in the left-right width direction, and the electric circuit components stored in the storage recess are formed in the left-right width direction of the refrigerator. It is characterized by being arranged in order of decreasing height toward the center. Thereby, in addition to the above effects, the lid that closes the rear opening of the storage recess is prevented from protruding toward the rear side of the refrigerator, so that it is possible to provide a refrigerator having a substantially flat rear surface, and it is possible to provide a refrigerator with a flat wall. It becomes a refrigerator that can be installed in close or close proximity.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the refrigerator of the present invention will be described. Each figure shows an embodiment of the present invention. FIG. 1 is a longitudinal side view of a refrigerator according to the present invention, FIG. 2 is a rear perspective view of the refrigerator according to the present invention, and FIG. 3 is a back wall of the refrigerator according to the present invention. FIG. 4 is a rear perspective view of the refrigerator according to the invention before reaching the present invention.
[0014]
In the figure, reference numeral 1 denotes a refrigerator main body constituting the refrigerator R, which has a heat insulating structure in which a foam heat insulating material 4 is filled between an outer box (outer wall plate) 3 and an inner box (inner wall plate) 2. In the refrigerator main body 1 opened to the front, a refrigerator compartment 5, a vegetable compartment 6, and a freezer compartment 7 are formed as a plurality of storage compartments from above. The front opening of the refrigerator compartment 5 is closed by a pivotable door 10 which is opened and closed by being laterally rotated by a hinge device on one side of the refrigerator body 1. A front opening of the vegetable compartment 6 is provided by a drawer-type door 11 which is pulled out forward together with a vegetable storage container 9 supported so as to be able to be pulled out in the front-rear direction by a drawer 8 provided by a combination of left and right rails and rollers provided in the vegetable compartment 6. It is closed. Like the vegetable compartment 6, the freezer compartment 7 is drawn out forward with a container 14 supported in a releasable manner by a combination of left and right rails and rollers provided in the freezer compartment 7, together with a container 14 supported to be able to be pulled out in the front-rear direction. The door 12 is closed.
[0015]
Reference numeral 15 denotes an electric compressor for compressing the refrigerant, 16 denotes a refrigerant condenser, and 17 denotes a refrigerator evaporator (cooler) for evaporating the refrigerant, which is installed in a cold air passage behind the refrigerator 5. Reference numeral 18 denotes a freezer evaporator (cooler) for evaporating the refrigerant, which is installed at the back of the freezer 7. The refrigerant condensed by the condenser 16 flows into the refrigerator evaporator 17 and the freezer evaporator 18 through a capillary tube as a refrigerant decompression device. Whether the refrigerant flowing out of the condenser 16 flows to one or both of the refrigerator compartment evaporator 17 and the freezer compartment evaporator 18 is switched three-way so that the temperatures of the refrigerator compartment 5 and the freezer compartment 7 are maintained at specified values. Controlled by a valve. A cooling system in which the refrigerant circulates is formed by these elements 15 to 18. Reference numeral 22 denotes an electric blower that circulates the air cooled by the refrigerator compartment evaporator 17 to the refrigerator compartment 5 and the vegetable compartment 6, and 23 denotes an electric blower that circulates the air cooled by the freezer compartment evaporator 18 to the freezer compartment 7.
[0016]
Reference numeral 27 denotes a dew receiving portion for receiving defrost water from the refrigerator evaporator 17, which is provided in the refrigerator main body 1 at a position behind the vegetable storage container 9. The dew received by the dew receiving part 27 is guided from a drain pipe 28 to an evaporating dish 29, where the dew is evaporated by heat of the condenser 16. The defrost water of the freezer evaporator (cooler) 18 is also guided to the evaporating dish 29 by the drain pipe, where it is evaporated by the heat of the condenser 16.
[0017]
The vegetable storage container 9 can be pulled out forward together with a door 11 that opens and closes the front opening of the vegetable compartment 6, and the door 11 is closed to prevent drying of the vegetables in the vegetable storage container 9 during a normal cooling operation cycle. In this state, the upper surface opening of the vegetable storage container 9 is substantially closed by the upper plate 24 attached to the ceiling of the vegetable room 6, and the upper surface opening is opened when the door 11 is pulled out. The inside of the vegetable storage container 9 is cooled mainly by cold air circulating around the vegetable storage container 9.
[0018]
The air cooled by the refrigerator evaporator 17 is blown out by the electric blower 22 from the passage above the refrigerator compartment 5 to the front of the refrigerator compartment 5 as shown by the solid line arrow to cool the refrigerator compartment 5 and cool the refrigerator compartment 5 and the vegetable compartment. 6 and circulates back to the refrigerating room evaporator 17 again through the cold air passage 25 formed between them. In this circulation, cool air flows into the vegetable compartment 6 from the front end of the upper plate 24 and flows around the vegetable storage container 9, and then returns to the refrigerator compartment evaporator 17.
[0019]
An electric compressor 15 and a condenser 16 are arranged in a machine room 20 formed at a lower portion of the refrigerator body 1, and heat of the electric compressor 15 and the condenser 16 is generated by a blower 21 arranged in the machine room 20. Heat is dissipated by air that is sucked in from the front of 20 and discharged to the rear.
[0020]
A vertical air passage 31 through which air in the machine room 20 rises is formed in a cutout shape at a portion along one of the left and right ridges of the rear surface 30 of the refrigerator body 1. Specifically, the left portion of the back plate 3A, which is a part of the outer box (outer wall plate) 3 of the refrigerator body 1, is inclined toward the side plate 3B of the outer box (outer wall plate) 3 of the refrigerator body 1. When the back surface 30 and the side surface of the refrigerator body 1 are installed along a wall surface of a kitchen or the like by the inclined surface 3C, a space having a triangular cross section is formed between the back surface 30 and the wall surface of the kitchen or the like. This space forms the air passage 31 because it is formed.
[0021]
A passage such as an air passage 31 is not formed in a portion along the other ridge of the left and right ridges of the back surface 30 of the refrigerator body 1, and therefore, the right side of the back surface 30 of the refrigerator body 1 The side is substantially flat, and the rear corner has a large heat insulation thickness. In the present invention, the electric circuit component 32 of the refrigerator R is attached to the board 34 at a portion along the other ridge of the ridge serving as the air passage 31 in the left and right ridges of the back surface 30 of the refrigerator body 1. The storage recess 35 of the electrical component 33 is formed to be long in the vertical direction. Specifically, the right portion of the back plate 3A, which is a part of the outer box (outer wall plate) 3 of the refrigerator body 1, is vertically depressed in the heat insulating material 4 direction so as to be opened toward the back side of the refrigerator R. A recess 35 is formed. Since the portion where the storage recess 35 is formed corresponds to the ridge of the flat rear surface of the refrigerator body 1, the foam heat insulating material 4 filled between the outer box (outer wall plate) 3 and the inner box (inner wall plate) 2 is formed. It is a thick part. Reference numeral 43 denotes a filling hole for the foamed heat insulating material 4 arranged vertically along the left and right ridges of the back surface 30, and the storage recess 35 is disposed between the filling holes 43 arranged vertically. For this reason, the foamed heat insulating material 4 filled from the filling hole 43 is favorably filled between the outer box (outer wall plate) 3 and the inner box (inner wall plate) 2 including the back side of the storage recess 35.
[0022]
Since the storage recess 35 is formed in a place where the thickness of the foamed heat insulating material 4 is large, the formation of the storage recess 35 does not reduce the heat insulating effect and the cooling in the refrigerator body 1 does not deteriorate. In this preferred embodiment, as shown in FIG. 3, the storage recess 35 is inclined such that the bottom surface of the back surface 30 is deeper on the side close to the right ridge. As a result, of the electric circuit components 32 attached to the substrate 34, a tall component 32A such as a transformer is disposed on the deep side of the storage recess 35, and a short component 32B is disposed on the shallow side of the storage recess 35. Storage state. That is, the bottom surface 35 </ b> A of the storage recess 35 is inclined so that the depth of the storage recess 35 gradually decreases toward the center of the refrigerator R in the left-right width direction, and the electric circuit components 32 stored in the storage recess 35. Are arranged in order of decreasing height toward the center in the left-right width direction of the refrigerator R. As a result, the lid 36 that closes the rear opening of the storage recess 35 in a water-tight state is prevented from protruding toward the rear side of the refrigerator R, so that the refrigerator R having a substantially flat rear surface can be provided, and the refrigerator R can be applied to a wall such as a kitchen. The refrigerator R can be installed in contact with or in proximity to the refrigerator.
[0023]
The machine room 20 is provided with an air suction port on the front side of the refrigerator body 1, the left and right sides are covered by left and right side walls of an outer box (outer wall plate) 3 of the refrigerator body 1, and the back side is covered by a cover plate 40. It is a configuration that has been changed. The lid plate 40 has an inclined surface 40C formed on the left side thereof in accordance with the shape of the inclined surface 3C of the rear plate 3A of the refrigerator body 1, and the machine room 20 has a vertical direction with respect to the inclined surface 40C. A plurality of hot air discharge holes 41 through which warm air is discharged are formed. As a result, the air passage 31 where the inclined surfaces 40C and 3C are substantially continuous is formed. The air in the machine room 20 is sucked by the blower 21 from the suction ports on the bottom and front sides of the refrigerator main body 1 and is discharged from the hot air discharge holes 41, rises in the air passage 31 and is discharged above the refrigerator R. . The right side of the lid plate 40 may have the same inclined shape as the inclined surface 40C. However, the right side of the rear surface 30 of the refrigerator body 1 above the lid plate 40 is substantially flat. The shape may be adapted to the shape. Reference numeral 42 denotes an AC power plug connected to the electrical unit 33.
[0024]
Reference numeral 37 denotes a vacuum heat insulating material, which is arranged in the heat insulating material 4 on the back wall of the refrigerator main body 1 in a range from the upper part to the lower part of the back wall. The vacuum heat insulating material 37 is a heat insulating material made of fine powder of silica, perlite, etc., glass fiber, open-cell foamed polyurethane, or the like in a bag of a multilayer laminated structure film (which is called a gas barrier film) for preventing gas permeation. A material (this is called a core material) is housed, and the inside of the bag of the gas barrier film is sealed in a vacuum state. Specifically, along the inside of the back plate 3A which is a part of the outer box (outer wall plate) 3 of the refrigerator main body 1, a wide range located on the back side of the refrigerator compartment 5, the vegetable compartment 6, and the freezer compartment 7 is provided. Exists.
[0025]
As a result, the air in the machine room 20 is exhausted from the vertical air passage 31 formed on one of the left and right ridges on the rear surface of the refrigerator body 1, and the compressor 15 and the condensate in the machine room 20 are condensed. The heat radiation effect of the vessel 16 can be obtained. In addition, since the electrical component 33 is accommodated vertically in the other ridge having a large heat insulation thickness, the electrical component 33 can be accommodated in a portion that does not adversely affect the cooling of the storage room of the refrigerator body 1. For this reason, the effect of the refrigerator in which the rear surface 30 of the refrigerator R can be installed close to or in contact with the wall of a room such as a kitchen is not impaired. Further, the heat insulation thickness of the back wall of the refrigerator R does not become thin as compared with the case where the housing recess of the electrical component is provided at the center of the back wall of the refrigerator R. Further, since the vacuum heat insulating material 37 can be arranged in a large area on the back wall of the refrigerator R, a great effect can be expected as an improvement in the heat insulating effect of the refrigerator R.
[0026]
FIG. 4 is a rear perspective view of the refrigerator R according to the invention before the present invention is reached. In the refrigerator R, a vertical air passage 31 in which the air in the machine room 20 rises is formed by an inclined surface 30C of the rear surface 30 at a portion along the left and right ridges of the rear surface 30 of the refrigerator main body 1. The inclined surface 40C formed with a plurality of hot air discharge holes 41 through which the warm air in the machine room 20 is formed is also formed on the lid plate 40 on the rear surface of the machine room 20, and the inclined surfaces 30C and 40C vertically move. An air passage 31 is formed in the direction. Thus, the air passages 31 are formed on both left and right sides of the back surface 30 of the refrigerator body 1. In the middle part on the back surface of the refrigerator main body 1, a storage recess 35 of the electrical component part 33 in which the electric circuit component 32 of the refrigerator R is attached to the substrate 34 has a flat portion between the left and right inclined surfaces 30C. It is formed vertically. The back opening of the storage recess 35 is closed by a lid 36 in a watertight state.
[0027]
In the configuration of FIG. 4, the vacuum heat insulating material 37 is disposed on the back wall of the refrigerator R above the housing recess 35 due to the presence of the storage recess 35 of the electrical component unit 33. The area is narrowed, and the heat insulating effect of this back wall portion is reduced. For this reason, it is necessary to increase the heat insulation thickness of the back wall portion, and when the outer dimensions of the refrigerator R are not increased, there is a problem that the internal volume of the refrigerator is reduced.
[0028]
In the above-described configuration, the air passage 31 is formed on the left side, and the housing recess 35 of the electrical unit 33 is formed on the right side. However, the air passage 31 is formed on the right side, and the housing recess 35 of the electrical unit 33 is on the left side. Even with the formed configuration, the same effects as described above can be expected without departing from the scope of the present invention.
[0029]
The present invention is characterized by the matters described in the claims. For this reason, the present invention is not limited to the above-described embodiment, but includes various embodiments in portions that do not deviate from the scope thereof.
[0030]
【The invention's effect】
According to the present invention, the air in the machine room is exhausted from the vertical air passage formed on one of the left and right ridges on the rear surface of the refrigerator body, and the compressor and the condenser in the machine room are exhausted. A heat radiation effect is obtained. In addition, since the electrical component is accommodated vertically in the other ridge having a large heat insulation thickness, the electrical component can be accommodated in a portion that does not adversely affect the cooling of the storage room of the refrigerator body. For this reason, the effect of the refrigerator that can be installed with the back surface of the refrigerator close to or in contact with the wall of a room such as a kitchen is not impaired.
[0031]
According to the second aspect of the present invention, the air in the machine room is exhausted from a vertical air passage formed on one of the left and right ridges on the rear surface of the refrigerator body, and the compressor in the machine room and The heat radiation effect of the condenser is obtained. In addition, since the electrical component is accommodated vertically in the other ridge having a large heat insulation thickness, the electrical component can be accommodated in a portion that does not adversely affect the cooling of the storage room of the refrigerator body. For this reason, the effect of the refrigerator that can be installed with the back surface of the refrigerator close to or in contact with the wall of a room such as a kitchen is not impaired. Further, since the vacuum heat insulating material can be arranged in a large area on the back wall of the refrigerator, a great effect can be expected as an improvement in the heat insulating effect of the refrigerator.
[0032]
According to the third aspect of the present invention, in addition to the above-described effects, the foamed heat insulating material filled from the filling hole is provided between the outer box (outer wall plate) including the back side of the storage recess and the inner box (inner wall plate). Good filling in between.
[0033]
According to the fourth aspect of the present invention, in addition to the above effects, the lid that closes the rear opening of the storage recess is suppressed from protruding toward the rear side of the refrigerator, so that a refrigerator with a substantially flat rear surface can be provided. The refrigerator can be installed in contact with or close to a wall such as a kitchen.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional side view of a refrigerator according to the present invention.
FIG. 2 is a rear perspective view of the refrigerator according to the present invention.
FIG. 3 is a cross-sectional plan view showing a configuration of left and right portions of a back wall of the refrigerator according to the present invention.
FIG. 4 is a rear perspective view of the refrigerator according to the invention before reaching the present invention.
[Explanation of symbols]
1 Refrigerator body 2 Inner box (inner wall plate)
3 ... Outer box (outer wall plate)
3A: back plate of outer box (outer wall plate) 3C: inclined surface 4: foam insulation material 5: refrigerator compartment 6: vegetable compartment 7: freezer compartment 15: compression Machine 16: Condenser 21 ... Blower 31 ... Air passage 32 ... Air circuit component 33 ... Electrical part 34 ... Substrate 35 ... Storage recess 36 ... Lid 37 ...・ Vacuum heat insulating material 40 ・ ・ ・ Cover plate 43 for machine room ・ ・ ・ Filling hole for foam heat insulating material
