JP3838500B2

JP3838500B2 - Scroll compressor

Info

Publication number: JP3838500B2
Application number: JP2002153044A
Authority: JP
Inventors: イン−フェクー; ヨウンイルチャン
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2002-05-27
Filing date: 2002-05-27
Publication date: 2006-10-25
Anticipated expiration: 2022-05-27
Also published as: JP2003343453A

Description

【０００１】
【発明の属する技術分野】
本発明は、スクロール圧縮機に係るもので、詳しくは、圧縮室の旋回方向に作用する流体の容積変化に適切に対応することで、スクロールの破損を防止して信頼性を向上し得るスクロール圧縮機に関するものである。
【０００２】
【従来の技術】
一般に、スクロール圧縮機は、一対の固定スクロール及び旋回スクロールにより形成される圧縮室の容積を変化させて流体を圧縮する圧縮機であって、往復動式圧縮機及びロータリ圧縮機に比べて効率が高くて振動及び騷音が低く、小型軽量化が可能であるために、近来、その使用領域が拡大されつつある。
【０００３】
そして、従来のスクロール圧縮機においては、図１２及び図１３に示したように、流体が吸入される吸入管１０２が上方向に連結され、圧縮された流体が吐出される吐出管１０４が側面に連結されて密閉した空間を有するケーシング１０６と、該ケーシング１０６の内部下方向に装着されて駆動力を発生する駆動部１０８と、前記ケーシング１０６の内部上方向に装着されて、前記駆動部１０８及び後述するクランクシャフト１１０に連結されることで流体の圧縮作用を行う圧縮部１１２と、を包含して構成されていた。
【０００４】
且つ、上記駆動部１０８は、上記ケーシング１０６の内周面に固定された固定子１１４と、該固定子１１４の内周面に回動自在に挿入された回転子１１６と、該回転子１６の内部に回動自在に挿入されたクランクシャフト１１０と、から構成されて、前記固定子１１４に電源が印加されると、該固定子１１４と回転子１１６との相互作用により前記クランクシャフト１１０が回動される。
【０００５】
又、上記圧縮部１１２は、インボリュート形状の固定ラップ１１８が複数形成されて、上記吸入管１０２が連結されることで、上記ケーシング１０６内部の上方向壁面に吐出孔１４２を有して固定された固定スクロール１２０と、前記固定ラップ１１８間に夫々圧縮室１２６を有するように前記固定ラップ１１８と対応されるインボリュート状の旋回ラップ１２２が複数形成されることで、上記クランクシャフト１１０に偏心して連結されて旋回運動を行う旋回スクロール１２４と、を包含して構成されている。
【０００６】
又、上記クランクシャフト１１０は、上記ケーシング１０６の内部上方向壁に固定されたメインフレーム１２８に回動自在に支持され、前記クランクシャフト１１０の上部には前記旋回スクロール１２４のボス１３０に挿入されて上記旋回スクロール１２４を旋回運動させる偏心部１３２が形成されることで、前記ケーシング１０６の下部に充満されたオイルが吸入され、前記旋回スクロール１２４と偏心部１３２間の摩擦部に供給されるオイル流路１３４が切削形成されている。
【０００７】
又、上記メインフレーム１２８と旋回スクロール１２４間には、圧縮された流体が出入されて吸入圧と吐出圧との中間程度の圧力が形成される背圧室１３６が形成され、前記旋回スクロール１２４の下面には該旋回スクロール１２４の自転を防止するためのオールダムリング１３８が装着されている。
又、上記クランクシャフト１１０の偏心部１３２と旋回スクロール１２４のボス１３０間には、上記オイル流路１３４に吸入されたオイルが背圧室１３６に流出されることを防止するシーリング１４０が挿入されている。
【０００８】
以下、このように構成された従来のスクロール圧縮機の動作に対して、説明する。先ず、上記駆動部１０８に電源が印加されると、上記回転子１１６と連結されたクランクシャフト１１０が回転されることで、上記偏心部１３２が回転されながら上記旋回スクロール１２４が旋回運動を行い、よって、上記吸入管１０２を通って上記圧縮室１２６に流入された流体は、前記旋回スクロール１２４の旋回運動により上記圧縮室１２６の中心部に移動しながら圧縮されて、該圧縮された流体は、上記固定スクロール１２０の吐出口１４２を通ってケーシング１０６の内部に吐出される。次いで、上記吐出口１４２から吐出された高圧状態の流体は、上記ケーシング１０６の側面に連結された上記吐出管１０４を通って外部に吐出される。
【０００９】
一方、上記ケーシング１０６の内部に吐出された高圧状態の流体が上記ケーシング１０６の下部に貯蔵されたオイルを加圧すると、該加圧されたオイルは、上記オイル流路１３４を沿って上記旋回スクロールのボス１３０と上記偏心部１３２間に供給されて潤滑作用を行うことで、上記旋回スクロール１２４を上方向に加圧して上記各旋回ラップ１２２と上記各固定ラップ１１８間の密着状態を維持させる。
【００１０】
且つ、上記偏心部１３２の横断面積と上記クランクシャフト１１０の横断面積とを同様に形成することで、前記クランクシャフト１１０に軸方向の荷重が発生しないようにし、上記偏心部１３２を下方向に加圧するオイルの圧力と上記クランクシャフト１１０を上方向に加圧する流体圧力とを同様にさせることで、前記クランクシャフト１１０には軸方向荷重が作用しないようにする。
【００１１】
【発明が解決しようとする課題】
然るに、このような従来のスクロール圧縮機においては、クランクシャフトの横断面積と偏心部の横断面積とが同様に形成されているが、旋回スクロールが円周方向に移動することができないために、圧縮動作中、非圧縮性流体が包含された液体状態の冷媒、オイル又は異質物が圧縮室に流入されて圧縮室の内部圧力が非正常的に上昇すると、圧縮室の容積が可変されないので、旋回スクロールの旋回ラップ及び固定スクロールの固定ラップが破損されることで、駆動部又はクランクシャフトに捩れ応力が集中されるという不都合な点があった。
【００１２】
本発明は、このような従来の課題に鑑みて成されたもので、クランクシャフトの偏心部と旋回スクロール間で、旋回スクロールを旋回円周方向に移動し得るようにし、非圧縮性流体が流入して圧縮室の容積が変化しても適切に対応することで、スクロールの破損を防止して圧縮機の信頼性を向上し得るスクロール圧縮機を提供することを目的とする。
【００１３】
【課題を解決するための手段】
このような目的を達成するため、本発明に係るスクロール圧縮機においては、内部に高圧が形成されるケーシングと、該ケーシングの内部下方向に装着されてクランクシャフトが挿入連結されて駆動力を発生する駆動部と、前記クランクシャフトの上方に該クランクシャフトと偏心して係合される旋回スクロールと、該旋回スクロール間に圧縮室を形成する固定スクロールから構成されて、流体の圧縮作用を行う圧縮部と、該圧縮部の旋回スクロールと前記クランクシャフト間に挿入されて、前記圧縮室に非圧縮性物質（例えば、潤滑油）が流入されると、前記旋回スクロールを前記固定スクロールから離隔させる順応手段と、を包含して構成されることを特徴とする。
【００１４】
又、本発明に係るスクロール圧縮機のクランクシャフトは、長さ方向中央にオイル流路が穿孔形成されて、上部に前記クランクシャフトの断面積に比べて小さい断面積を有するように縮小された偏心部が延長して形成されることを特徴とする。
又、本発明に係るスクロール圧縮機の順応手段は、上記旋回スクロールの下面に形成されたボスの内周面に回転可能に挿入されて中央には上記クランクシャフトの偏心部がスライディング移動可能に挿入されるスロットが穿孔形成される順応部材から構成されることを特徴とする。
【００１５】
又、本発明に係るクランクシャフトの偏心部は、該偏心部が前記旋回スクロールのボスに挿入されたとき、所定高さの段を有するように、上面方向に長く延長されて、その延長された部分の断面は左右側の対向方向に湾曲され、上下対向方向には相互平行する直線部が形成されることを特徴とする。
又、本発明に係る順応部材のスロットは、上記クランクシャフトの偏心部の外周直線部が直線方向にスライディング可能に挿入されて、前記クランクシャフトの偏心部が所定距離直線方向にスライディング移動されるように前記偏心部の直線部に対応する直線部が形成されることを特徴とする。
【００１６】
又、本発明に係るスクロール圧縮機の順応部材の外周面と上記旋回スクロールのボスの内周面間にはシーリングが挿入されることを特徴とする。
又、本発明に係るスクロール圧縮機のクランクシャフトの断面積は、上記順応部材の外径断面積と同様であることを特徴とする。
又、本発明に係るスクロール圧縮機のクランクシャフトの上面には、外方側に所定径を有するフランジ部が突成されることを特徴とする。
又、本発明に係るスクロール圧縮機の順応部材の下面の外方側に上記クランクシャフトの上面と密着されるリブが突成されることを特徴とする。
【００１７】
又、本発明に係るスクロール圧縮機の順応部材の下面の内方側に上記クランクシャフトの上面と密着されるリブが突成されることを特徴とする。
又、本発明に係るスクロール圧縮機の順応部材４０の下面と上記クランクシャフトの上面間にはシーリング部材が挿入されることを特徴とする。
又、本発明に係るスクロール圧縮機の順応部材の下面には、上記シーリング部材が挿入されるための挿入溝が切削形成されることを特徴とする。
又、本発明に係るスクロール圧縮機の順応部材の下面と前記クランクシャフトの上面間には、上記シーリング部材が挿入されることを特徴とする。
【００１８】
又、本発明に係るスクロール圧縮機のシーリング部材はテフロン（登録商標）材質にて形成されることを特徴とする。
又、本発明に係るスクロール圧縮機の順応部材の内周面とクランクシャフトの偏心部の外周面間には弾性体が挿入されて、その両方端が夫々係止されることを特徴とする。
又、本発明に係るスクロール圧縮機の弾性体は、コイルスプリングであることを特徴とする。
【００１９】
又、本発明に係るスクロール圧縮機の順応手段は、上記旋回スクロールの下面に形成されたボスに回転可能に挿入されて、上記クランクシャフトの偏心部が挿入されるように中心の一方側に偏心される偏心ホールが穿孔形成された順応部材から構成されることを特徴とする。
又、本発明に係るクランクシャフトの偏心部は、上記クランクシャフトの上面から偏心されて下方向に延長されたリング状に形成されることを特徴とする。
又、本発明に係るスクロール圧縮機の順応部材は、上記ボスの内周面に回転可能に挿入されるリング状に形成され、その中央から所定距離だけ偏心された地点に前記クランクシャフトの中心が位置されることを特徴とする。
【００２０】
【発明の実施の形態】
以下、本発明の実施の形態に対し、図面を用いて説明する。
本発明に係るスクロール圧縮機においては、図１乃至図３に示したように、内部に高圧が形成されるケーシング２と、該ケーシング２の内部下方向に装着されて駆動力を発生する駆動部４と、該駆動部４及びクランクシャフト６に連結されて、前記駆動部４が駆動によって流体の圧縮作用を行う圧縮部８と、を包含して構成されている。
又、上記ケーシング２は、内部に高圧が形成される密閉容器であって、上方向には流体が吸入される吸入管２８が連結されて、側壁面一方側には圧縮された流体が排出される吐出管３０が連結されている。
【００２１】
又、上記駆動部４は、上記ケーシング２の内周壁面に固定された固定子１０と、該固定子１０の内周面に挿入されて上記クランクシャフト６が係合された回転子１２と、から構成されて、前記固定子１０に電源が印加されると、該固定子１０と回転子１２との相互作用により前記クランクシャフト６が回動される。
又、上記クランクシャフト６は、上記ケーシング２の内部に固定されたメインフレーム１４に回動自在に支持されて、上方向には偏心部１６が形成されて、軸方向中心にケーシング２の下部に貯蔵されたオイルを圧縮機内部の摩擦部に供給するオイル流路１８が穿孔形成されている。
【００２２】
又、上記圧縮部８は、上部にインボリュート状の複数の固定ラップ２０を有して、上記ケーシング２の内部に固定されることで一方側に前記吸入管２８が連結される固定スクロール２２と、前記固定ラップ２０間に圧縮室３２が形成されるように前記固定ラップ２０と対応する複数のインボリュート状の旋回ラップ２４を有して、下面に上記クランクシャフトの偏心部１６が挿入されるボス３４が形成された旋回スクロール２６と、を包含して構成されている。
【００２３】
又、上記固定スクロール２２の中央には、上記固定ラップ２０と旋回ラップ２４間の圧縮室３２の容積変化により圧縮された流体が上記ケーシング２の内部に排出される排出ホール３６が穿孔形成されることで、前記旋回スクロール２６とメインフレーム１４間の空間には、前記圧縮室３２の流体が出入して吸入圧と吐出圧との中間程度の圧力を維持する背圧室３８が形成されている。
【００２４】
又、上記旋回スクロール２６のボス３４の内周面と上記クランクシャフト６の偏心部１６の外周面間には、上記圧縮室３２に液状冷媒、オイル又は異質物のような非圧縮性流体が流入される場合、前記旋回スクロール２６が円周方向に移動されるように順応手段としての順応部材４０が挿入されている。
又、該順応部材４０は、上記旋回スクロール２６のボス３４の内周面に回動自在に挿入されて、中央に上記クランクシャフトの偏心部１６がスライディング可能に挿合されるスロット４２が穿孔形成されている。
【００２５】
又、上記クランクシャフトの偏心部１６は、上記クランクシャフト６の断面積に比べて小さい断面積を有するように前記クランクシャフト６の上面から下方向に延長形成されて、その延長された長さ方向に両方側が平行に切欠された形態の直線部４６が切削形成されている。且つ、それら直線部４６が切削形成された上記クランクシャフト６の境界上面には、上記偏心部１６が切削された部位の外周面に段部４４が形成されることで、動作の際、その段部４４に前記順応部材４０が密着されるようになっている。
【００２６】
又、上記順応部材４０のスロット４２は、上記偏心部１６に沿って直線移動するように両方側が直線状に切削形成されるが、そのスロット４２の長さは、上記旋回スクロール２６が外周方向に移動される移動量を確保し得る長さを有している。
又、上記順応部材４０の高さは、上記偏心部１６の延長された長さと同様又はやや小さく形成されて下面が上記クランクシャフトの段部４４に密着される。即ち、上記オイル流路１８を通ってオイルが圧入されると、上記順応部材４０を下方向に押さえて、該順応部材を押さえるオイルの圧力により前記順応部材４０の下面が上記クランクシャフト６の段部４４に密着された状態を維持することで、前記オイル流路１８に供給されたオイルが上記背圧室３８に漏洩されることを防止させる。
【００２７】
又、上記順応部材４０の外周面と前記旋回スクロール２６のボスの内周面間には密閉用のベアリング部材５０が嵌合されることで、上記ボス３４と順応部材４０間のオイルの漏洩を防止させる。
且つ、上記クランクシャフト６に軸方向荷重が作用しないように前記クランクシャフト６の断面積と上記順応部材４０の外径面積とが同様に形成される。即ち、上記ケーシング２の内部に作用する高圧状態の流体により上記クランクシャフト６が上方向に押される押力と、上記オイル流路１８に吐出されるオイルの圧力により上記偏心部１６及び順応部材４０を下方向に押す押力とが相互相殺されることで、前記クランクシャフト６に軸方向荷重が作用することが防止される。
【００２８】
以下、上記のように構成される本発明に係るスクロール圧縮機の動作に対して説明する。
先ず、上記駆動部４に電源が印加されると、上記回転子１２と一緒にクランクシャフト６が回転し、上記偏心部１６が偏心された状態に回転すると、該偏心部１６に軸方向移動可能に装着された上記順応部材４０が回転し、該順応部材４０の回転運動によって上記旋回スクロール２６が旋回運動する。次いで、上記旋回スクロール２６の旋回運動によって、上記吸入管２８を通って上記圧縮室３２に流入された流体が旋回ラップ２４と固定ラップ２０間の容積変化により圧縮されながら排出ホール３６を通って上記ケーシング２の内部に吐出され、該ケーシング２の内部に吐出された流体が上記吐出管３０を通って外部に吐出される。この時、上記順応部材４０は、上記偏心部１６の遠心力により該偏心部１６の直線部４６に沿って遠心力方向に移動して上記旋回ラップ２４と固定ラップ２０間の間隔を一定に維持させる。
【００２９】
次いで、上記ケーシング２の内部に吐出された高圧状態の流体が前記ケーシング２の下方向に貯蔵されたオイルを加圧すると、該オイルは上記オイル流路１８に沿って上記偏心部１６の上面に吐出されて摩擦部の潤滑作用を行う。この時、上記吐出されるオイルの圧力は流体の圧力と同様である。
又、上記偏心部１６の上面に吐出される高圧状態のオイルが前記偏心部１６及び順応部材４０の上面に作用して前記偏心部１６及び順応部材４０を下方向に加圧するが、上記ケーシング２の内部には流体の圧力が作用するために、上記クランクシャフト６を上方向に加圧させるようになると、上記偏心部１６及び順応部材４０を押す押力と前記クランクシャフト６を押す押力とが相互相殺されることで、前記クランクシャフト６の軸方向の作用力の発生が防止される。
【００３０】
即ち、上記偏心部１６と順応部材４０との断面積の合算値と上記クランクシャフト６の断面積とが同様で、上記オイルの圧力と流体の圧力とが同様であるために、前記クランクシャフト６の上方向及び下方向に作用する荷重が相互同様になって、前記クランクシャフト６は軸方向の力を受けなくなる。
又、上記順応部材４０は、オイルの圧力により下方向に力を受けて、上記クランクシャフト６の段部４４に密着されるため、前記順応部材４０と偏心部１６間にオイルが漏洩されることが防止され、前記順応部材４０とボス３４間に嵌合されたシーリング５０により前記順応部材４０とボス３４間からオイルの漏洩が防止される。
【００３１】
このような正常な圧縮機駆動中、非圧縮性物質の液体状の冷媒、オイル及び異質物が圧縮室３２に流入されると、上記圧縮室３２の容積変化が発生されて、上記旋回スクロール２６が前記圧縮室３２の容積変化に相応するように円周方向に直線移動される。
即ち、非圧縮性流体の流入により上記圧縮室３４に作用する圧力が正常値以上に大きくなると、上記旋回スクロール２６に円周方向に直線移動される力が作用して、上記順応部材４０のスロット４２が上記偏心部１６の円周方向にスライディング移動されながら前記旋回スクロール２６の円周方向直線移動が可能になる。
【００３２】
又、本発明に係るスクロール圧縮機の第２実施形態として、図４に示したように、上記クランクシャフト６の偏心部１６を切削して形成し始める原の太い部の外周面から所定長さ外側にフランジ部５６を拡大形成し、このように拡大された前記フランジ部５６の上面に順応部材４０が挿入される旋回スクロール２６のボス３４を形成し、その他は第１実施形態と同様に構成することで、オイルの漏洩を一層效果的に防止することができる。
又、本発明に係るスクロール圧縮機の第３実施形態として、図５に示したように、上記クランクシャフト６のフランジ部５６に接触される上記順応部材４０の下面の外周面に所定幅及び高さを有するほぼ環状のリブ６０を形成し、その他は第１実施形態と同様に構成することもできる。
【００３３】
即ち、上記順応部材４０の下面とクランクシャフト６のフランジ部５６の上面とは相互接触して密封しなければならないために加工をするときは、精密研削加工を必要とするが、前記フランジ部５６の上面を研削する時、上記偏心部１６の干渉により加工時間が長くかかって、加工費用が上昇するので、前記順応部材４０の下面外周縁にリブ６０を突成し、前記フランジ部５６の上面中、前記リブ６０と接触される部位のみを精密研削加工すれば良いので、加工時間を低減して原価を節減することができる。
【００３４】
又、本発明に係るスクロール圧縮機の第４実施形態として、図６に示したように、上記クランクシャフト６のフランジ部５６に接触される順応部材４０の下面から所定幅及び高さを有して突成されるリブ６２を突成し、その他は第１実施形態と同様に構成することもできる。
又、本発明に係るスクロール圧縮機の第５実施形態として、図７に示したように、上記クランクシャフト６のフランジ部５６の上面と順応部材４０の下面間にシーリング部材６６を係合することで、上記オイル流路１８を通って上記偏心部１６の上面に圧入されるオイルが上記背圧室３８に漏洩されることを防止するように構成し、その他は第１実施形態と同様に構成することもできる。
【００３５】
即ち、該シーリング部材６６は、リングタイプのテフロン（登録商標）材質を用い、該シーリング部材６６を装着するためにそのシーリング部材６６に対応する上記順応部材４０の下面には挿入溝６８が切削形成される。
又、本発明に係るスクロール圧縮機の第６実施形態として、図８に示したように、上記クランクシャフト６のフランジ部５６の上面の周囲方向に環状の挿入溝７２を切削形成し、該挿入溝７２にテフロン（登録商標）材質のシーリング部材７０を挿入して、その他は第１実施形態と同様に構成することもできる。
【００３６】
又、本発明に係るスクロール圧縮機の第７実施形態として、上記順応部材４０の内周面と上記クランクシャフト６の偏心部１６の外周面間に弾性体７６として、コイルスプリングを挿入して、該コイルスプリングの先方両方端をそれら順応部材４０及び偏心部１６の周面に係止させることで、前記順応部材４０がスライディング移動された後、元の状態に復帰される弾性力を附与させ、その他は第１実施形態と同様に構成することもできる。
【００３７】
又、本発明に係るスクロール圧縮機の第８実施形態として、図１０及び図１１に示したように、上記旋回スクロール２６のボス３４の内部に回転可能に挿入される環状の順応部材８０と、該順応部材８０の中心から何れ一方に偏心して穿孔形成された偏心ホール８２と、該偏心ホール８２に回転可能に挿入される円筒状の偏心部８４と、を包含して構成し、その他は第１実施形態と同様に構成することもできる。
【００３８】
又、このように構成される本発明に係るスクロール圧縮機の第８実施形態の動作は、上記クランクシャフト６が回転すると、上記偏心部８４が偏心された状態で回転されることで、上記順応部材８０が回転されながら上記旋回スクロール２６が旋回運動する。この時、上記旋回スクロール２６が円周方向に直線移動すると、上記順応部材８０が偏心ホール８２を中心に回転されながら円周方向に直線移動する。
【００３９】
【発明の効果】
以上説明したように、本発明に係るスクロール圧縮機においては、クランクシャフトの偏心部と旋回スクロールのボス間に前記旋回スクロールの円周方向直線移動を可能にする順応部材を係合し、圧縮室に非圧縮性流体の液状冷媒、オイル及び異質物が流入されることで圧縮室の圧力が増加する場合、前記旋回スクロールが円周方向に直線移動されるようになっているため、圧縮室の容積変化に能動的に対処することができるし、旋回スクロールの旋回ラップ及び固定スクロールの固定ラップの破損を防止することができるので、圧縮機の信頼性を向上し得るという効果がある。
【図面の簡単な説明】
【図１】本発明に係るスクロール圧縮機の第１実施形態の構成を示した断面図である。
【図２】図１のＢ部分を示した拡大図である。
【図３】図２のＩＩ−ＩＩ線断面図である。
【図４】本発明に係るスクロール圧縮機の第２実施形態を示した図１のＢ部分拡大断面図である。
【図５】本発明に係るスクロール圧縮機の第３実施形態を示した図１のＢ部分拡大断面図である。
【図６】本発明に係るスクロール圧縮機の第４実施形態を示した図１のＢ部分拡大断面図である。
【図７】本発明に係るスクロール圧縮機の第５実施形態を示した図１のＢ部分拡大断面図である。
【図８】本発明に係るスクロール圧縮機の第６実施形態を示した図１のＢ部分拡大断面図である。
【図９】本発明に係るスクロール圧縮機の第７実施形態を示した図２のＩＩ−ＩＩ線断面図である。
【図１０】本発明に係るスクロール圧縮機の第８実施形態を示した図１のＢ部分拡大断面図である。
【図１１】図１０のＩＩＩ−ＩＩＩ線断面図である。
【図１２】従来のスクロール圧縮機を示した断面図である。
【図１３】図１２のＡ部分を示した拡大図である。
【符号の説明】
２…ケーシング
４…駆動部
６…クランクシャフト
８…圧縮部
１０…固定子
１２…回転子
１４…メインフレーム
１６…偏心部
１８…オイル流路
２０…固定ラップ
２２…固定スクロール
２４…旋回ラップ
２６…旋回スクロール
２８…吸入管
３０…吐出管
３２…圧縮室
３４…ボス
３６…排出ホール
３８…背圧室
４０…順応部材
４２…スロット
４４…段部
４６、４６ａ…直線部
５０…シーリング
５６…フランジ部
６０、６２…リブ
６６…シーリング部材
７６…弾性体[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a scroll compressor. More specifically, the present invention relates to scroll compression that can prevent the breakage of the scroll and improve the reliability by appropriately responding to the volume change of the fluid acting in the swirling direction of the compression chamber. Related to the machine.
[0002]
[Prior art]
Generally, a scroll compressor is a compressor that compresses a fluid by changing the volume of a compression chamber formed by a pair of fixed scrolls and orbiting scrolls, and is more efficient than a reciprocating compressor and a rotary compressor. Since it is high, vibration and noise are low, and it is possible to reduce the size and weight, its use area is being expanded recently.
[0003]
In the conventional scroll compressor, as shown in FIGS. 12 and 13, the suction pipe 102 through which fluid is sucked is connected upward, and the discharge pipe 104 through which compressed fluid is discharged is formed on the side surface. A casing 106 that is connected and has a sealed space, a driving unit 108 that is mounted in the lower direction inside the casing 106 to generate a driving force, and a driving unit 108 that is mounted in the upper direction inside the casing 106, And a compression portion 112 that performs a fluid compression action by being connected to a crankshaft 110 described later.
[0004]
The drive unit 108 includes a stator 114 fixed to the inner peripheral surface of the casing 106, a rotor 116 rotatably inserted into the inner peripheral surface of the stator 114, and the rotor 16. When a power source is applied to the stator 114, the crankshaft 110 is rotated by the interaction between the stator 114 and the rotor 116. Moved.
[0005]
The compression unit 112 has a plurality of involute-shaped fixing wraps 118 and is connected to the suction pipe 102 so that the compression wall 112 has a discharge hole 142 on the upper wall surface inside the casing 106. A plurality of involute swivel wraps 122 corresponding to the fixed wrap 118 are formed so as to have compression chambers 126 between the fixed scroll 120 and the fixed wrap 118, respectively, so that they are eccentrically connected to the crankshaft 110. And the orbiting scroll 124 that performs the orbiting motion.
[0006]
The crankshaft 110 is rotatably supported by a main frame 128 fixed to the inner upper wall of the casing 106, and is inserted into a boss 130 of the orbiting scroll 124 at the upper part of the crankshaft 110. By forming the eccentric portion 132 for rotating the orbiting scroll 124, the oil filled in the lower portion of the casing 106 is sucked and the oil flow supplied to the friction portion between the orbiting scroll 124 and the eccentric portion 132. A path 134 is formed by cutting.
[0007]
Further, a back pressure chamber 136 is formed between the main frame 128 and the orbiting scroll 124 so that a compressed fluid enters and exits to form a pressure that is intermediate between suction pressure and discharge pressure. An old dam ring 138 for preventing the orbiting scroll 124 from rotating is mounted on the lower surface.
A sealing 140 is inserted between the eccentric portion 132 of the crankshaft 110 and the boss 130 of the orbiting scroll 124 to prevent the oil sucked into the oil passage 134 from flowing out into the back pressure chamber 136. Yes.
[0008]
Hereinafter, the operation of the conventional scroll compressor configured as described above will be described. First, when power is applied to the drive unit 108, the crankshaft 110 connected to the rotor 116 is rotated, so that the orbiting scroll 124 performs a orbiting motion while the eccentric portion 132 is rotated. Therefore, the fluid flowing into the compression chamber 126 through the suction pipe 102 is compressed while being moved to the center of the compression chamber 126 by the orbiting movement of the orbiting scroll 124, and the compressed fluid is It is discharged into the casing 106 through the discharge port 142 of the fixed scroll 120. Next, the high-pressure fluid discharged from the discharge port 142 is discharged to the outside through the discharge pipe 104 connected to the side surface of the casing 106.
[0009]
On the other hand, when the high-pressure fluid discharged into the casing 106 pressurizes the oil stored in the lower part of the casing 106, the pressurized oil flows along the oil flow path 134 with the orbiting scroll. By being supplied between the boss 130 and the eccentric portion 132 and performing a lubricating action, the orbiting scroll 124 is pressurized upward to maintain the contact state between the orbiting wrap 122 and the fixed wrap 118.
[0010]
In addition, by forming the cross-sectional area of the eccentric portion 132 and the cross-sectional area of the crankshaft 110 in the same manner, an axial load is not generated on the crankshaft 110, and the eccentric portion 132 is added downward. By making the oil pressure to be pressed and the fluid pressure to pressurize the crankshaft 110 upward, the axial load is prevented from acting on the crankshaft 110.
[0011]
[Problems to be solved by the invention]
However, in such a conventional scroll compressor, the cross-sectional area of the crankshaft and the cross-sectional area of the eccentric part are formed in the same way, but the orbiting scroll cannot move in the circumferential direction, so During operation, if a refrigerant, oil, or a foreign substance in a liquid state containing an incompressible fluid flows into the compression chamber and the internal pressure of the compression chamber rises abnormally, the volume of the compression chamber is not changed. There has been a disadvantage in that twisting stress is concentrated on the drive unit or the crankshaft due to the breakage of the scroll wrap and the fixed scroll.
[0012]
The present invention has been made in view of such a conventional problem, and enables the orbiting scroll to move in the orbiting circumferential direction between the eccentric portion of the crankshaft and the orbiting scroll so that an incompressible fluid flows in. An object of the present invention is to provide a scroll compressor capable of preventing the scroll from being damaged and improving the reliability of the compressor by appropriately dealing with the change in the volume of the compression chamber.
[0013]
[Means for Solving the Problems]
In order to achieve such an object, in the scroll compressor according to the present invention, a casing in which high pressure is formed, and a crankshaft is inserted and connected to the lower side of the casing to generate a driving force. A compressing unit that performs a fluid compressing action, and a driving scroll that is eccentrically engaged with the crankshaft above the crankshaft, and a fixed scroll that forms a compression chamber between the orbiting scrolls. And an adaptation means that is inserted between the orbiting scroll of the compression section and the crankshaft, and separates the orbiting scroll from the fixed scroll when an incompressible substance (for example, lubricating oil) flows into the compression chamber. And is configured to include.
[0014]
Also, the crankshaft of the scroll compressor according to the present invention has an eccentricity reduced so that an oil passage is formed in the center in the longitudinal direction and the upper portion has a smaller cross-sectional area than that of the crankshaft. The portion is formed to be extended.
Further, the adaptation means of the scroll compressor according to the present invention is rotatably inserted into the inner peripheral surface of the boss formed on the lower surface of the orbiting scroll, and the eccentric portion of the crankshaft is inserted into the center so that the sliding movement is possible. The slot to be formed is composed of a conforming member to be perforated.
[0015]
Further, the eccentric portion of the crankshaft according to the present invention is extended and extended in the upper surface direction so that the eccentric portion has a predetermined height when the eccentric portion is inserted into the orbiting scroll boss. The cross section of the portion is curved in the opposite direction on the left and right sides, and linear portions that are parallel to each other are formed in the opposite direction in the vertical direction.
In the slot of the adaptation member according to the present invention, the outer peripheral straight portion of the eccentric portion of the crankshaft is inserted so as to be slidable in a linear direction, and the eccentric portion of the crankshaft is slid in a linear direction by a predetermined distance. Further, a straight line portion corresponding to the straight line portion of the eccentric portion is formed.
[0016]
Further, a sealing is inserted between the outer peripheral surface of the adaptation member of the scroll compressor according to the present invention and the inner peripheral surface of the boss of the orbiting scroll.
Further, the cross-sectional area of the crankshaft of the scroll compressor according to the present invention is the same as the outer-diameter cross-sectional area of the adaptation member.
Further, the upper surface of the crankshaft of the scroll compressor according to the present invention is characterized in that a flange portion having a predetermined diameter is projected outward.
The rib may be in close contact with the upper surface of the crankshaft on the outer side of the lower surface of the adaptation member of the scroll compressor according to the present invention.
[0017]
The rib may be in close contact with the upper surface of the crankshaft on the inner side of the lower surface of the adaptation member of the scroll compressor according to the present invention.
Further, a sealing member is inserted between the lower surface of the adaptation member 40 of the scroll compressor according to the present invention and the upper surface of the crankshaft.
In addition, an insertion groove for inserting the sealing member is formed on the lower surface of the adaptation member of the scroll compressor according to the present invention.
The sealing member may be inserted between the lower surface of the adaptation member of the scroll compressor according to the present invention and the upper surface of the crankshaft.
[0018]
The sealing member of the scroll compressor according to the present invention is formed of a Teflon (registered trademark) material.
Further, an elastic body is inserted between the inner peripheral surface of the adaptation member of the scroll compressor according to the present invention and the outer peripheral surface of the eccentric portion of the crankshaft, and both ends thereof are respectively locked.
The elastic body of the scroll compressor according to the present invention is a coil spring.
[0019]
Further, the adaptation means of the scroll compressor according to the present invention is rotatably inserted into a boss formed on the lower surface of the orbiting scroll, and is eccentric to one side of the center so that the eccentric portion of the crankshaft is inserted. The eccentric hole is formed of a conforming member in which a perforated hole is formed.
The eccentric portion of the crankshaft according to the present invention is formed in a ring shape that is eccentric from the upper surface of the crankshaft and extends downward.
The adaptation member of the scroll compressor according to the present invention is formed in a ring shape that is rotatably inserted into the inner peripheral surface of the boss, and the center of the crankshaft is located at a point eccentric from the center by a predetermined distance. It is positioned.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the scroll compressor according to the present invention, as shown in FIG. 1 to FIG. 3, a casing 2 in which a high pressure is formed, and a driving unit that is mounted in the lower side of the casing 2 and generates a driving force. 4 and a compression unit 8 connected to the drive unit 4 and the crankshaft 6 to compress the fluid by the drive unit 4 being driven.
The casing 2 is a sealed container in which a high pressure is formed, and a suction pipe 28 for sucking fluid is connected to the upper side, and compressed fluid is discharged to one side of the side wall surface. The discharge pipe 30 is connected.
[0021]
The drive unit 4 includes a stator 10 fixed to the inner peripheral wall surface of the casing 2, a rotor 12 inserted into the inner peripheral surface of the stator 10 and engaged with the crankshaft 6, When the power is applied to the stator 10, the crankshaft 6 is rotated by the interaction between the stator 10 and the rotor 12.
The crankshaft 6 is rotatably supported by a main frame 14 fixed inside the casing 2, and an eccentric portion 16 is formed in the upper direction. An oil passage 18 for supplying the stored oil to the friction part inside the compressor is formed with perforations.
[0022]
The compression unit 8 has a plurality of involute fixed wraps 20 at the top, and is fixed inside the casing 2 so that the suction pipe 28 is connected to one side thereof. A boss 34 having a plurality of involute-shaped turning wraps 24 corresponding to the fixed wrap 20 so that a compression chamber 32 is formed between the fixed wraps 20, and the eccentric portion 16 of the crankshaft being inserted into the lower surface. And the orbiting scroll 26 in which is formed.
[0023]
A discharge hole 36 is formed in the center of the fixed scroll 22 through which the fluid compressed by the volume change of the compression chamber 32 between the fixed wrap 20 and the orbiting wrap 24 is discharged into the casing 2. Thus, in the space between the orbiting scroll 26 and the main frame 14, a back pressure chamber 38 is formed in which the fluid in the compression chamber 32 enters and exits and maintains an intermediate pressure between the suction pressure and the discharge pressure. .
[0024]
An incompressible fluid such as liquid refrigerant, oil, or a foreign material flows into the compression chamber 32 between the inner peripheral surface of the boss 34 of the orbiting scroll 26 and the outer peripheral surface of the eccentric portion 16 of the crankshaft 6. In this case, an adaptation member 40 as an adaptation means is inserted so that the orbiting scroll 26 is moved in the circumferential direction.
The adaptation member 40 is rotatably inserted into the inner peripheral surface of the boss 34 of the orbiting scroll 26, and a slot 42 into which the eccentric portion 16 of the crankshaft is slidably inserted is formed at the center. Has been.
[0025]
Further, the eccentric portion 16 of the crankshaft is formed to extend downward from the upper surface of the crankshaft 6 so as to have a cross-sectional area smaller than the cross-sectional area of the crankshaft 6, and its extended length direction. The straight portion 46 is cut and formed on both sides in parallel. Further, a stepped portion 44 is formed on the outer peripheral surface of the portion where the eccentric portion 16 is cut on the boundary upper surface of the crankshaft 6 where the straight portions 46 are cut and formed. The adaptation member 40 is brought into close contact with the portion 44.
[0026]
In addition, the slot 42 of the adaptation member 40 is cut and formed in a straight line on both sides so as to move linearly along the eccentric portion 16, but the length of the slot 42 is such that the orbiting scroll 26 extends in the outer circumferential direction. It has a length that can secure the amount of movement.
Further, the height of the adaptation member 40 is formed to be the same as or slightly smaller than the extended length of the eccentric portion 16, and the lower surface is in close contact with the step portion 44 of the crankshaft. That is, when the oil is press-fitted through the oil flow path 18, the adaptation member 40 is pressed downward, and the lower surface of the adaptation member 40 is lowered by the pressure of the oil holding the adaptation member. By maintaining the state of being in close contact with the portion 44, the oil supplied to the oil passage 18 is prevented from leaking into the back pressure chamber 38.
[0027]
Further, a sealing bearing member 50 is fitted between the outer peripheral surface of the adaptation member 40 and the inner peripheral surface of the boss of the orbiting scroll 26, so that oil leakage between the boss 34 and the adaptation member 40 is prevented. To prevent.
In addition, the cross-sectional area of the crankshaft 6 and the outer diameter area of the adaptation member 40 are similarly formed so that an axial load does not act on the crankshaft 6. That is, the eccentric portion 16 and the adaptation member 40 are pressed by the pressing force that pushes the crankshaft 6 upward by the high-pressure fluid acting inside the casing 2 and the pressure of the oil discharged to the oil passage 18. As a result, the axial force is prevented from acting on the crankshaft 6.
[0028]
Hereinafter, the operation of the scroll compressor according to the present invention configured as described above will be described.
First, when power is applied to the drive unit 4, the crankshaft 6 rotates together with the rotor 12, and when the eccentric part 16 rotates in an eccentric state, the eccentric part 16 can move in the axial direction. The adaptation member 40 attached to the rotating member 40 rotates, and the orbiting scroll 26 orbits due to the rotation of the adaptation member 40. Next, the fluid that has flowed into the compression chamber 32 through the suction pipe 28 by the orbiting motion of the orbiting scroll 26 is compressed by the volume change between the orbiting wrap 24 and the fixed wrap 20, and passes through the discharge hole 36. The fluid discharged into the casing 2 and discharged into the casing 2 is discharged outside through the discharge pipe 30. At this time, the adaptation member 40 moves in the direction of the centrifugal force along the straight portion 46 of the eccentric portion 16 by the centrifugal force of the eccentric portion 16 to keep the interval between the orbiting wrap 24 and the fixed wrap 20 constant. Let
[0029]
Next, when the high-pressure fluid discharged into the casing 2 pressurizes the oil stored in the downward direction of the casing 2, the oil is applied to the upper surface of the eccentric portion 16 along the oil flow path 18. It is discharged and lubricates the friction part. At this time, the pressure of the discharged oil is the same as the pressure of the fluid.
The high pressure oil discharged to the upper surface of the eccentric part 16 acts on the upper surface of the eccentric part 16 and the adaptation member 40 to pressurize the eccentric part 16 and the adaptation member 40 downward. Since the fluid pressure acts on the inside of the cylinder, when the crankshaft 6 is pressurized upward, the pressing force for pressing the eccentric portion 16 and the adaptation member 40 and the pressing force for pressing the crankshaft 6 Are mutually cancelled, so that generation of an acting force in the axial direction of the crankshaft 6 is prevented.
[0030]
That is, the sum of the cross-sectional areas of the eccentric portion 16 and the adaptation member 40 and the cross-sectional area of the crankshaft 6 are the same, and the oil pressure and the fluid pressure are the same. Since the loads acting in the upward and downward directions are the same as each other, the crankshaft 6 is not subjected to the axial force.
Further, since the adaptation member 40 receives a downward force due to the pressure of the oil and is brought into close contact with the step portion 44 of the crankshaft 6, oil leaks between the adaptation member 40 and the eccentric portion 16. The sealing 50 fitted between the adaptation member 40 and the boss 34 prevents oil leakage from between the adaptation member 40 and the boss 34.
[0031]
When such a normal compressor is driven, when the liquid refrigerant, oil, and foreign substances of the incompressible substance flow into the compression chamber 32, the volume change of the compression chamber 32 is generated and the orbiting scroll 26 is turned on. Is linearly moved in the circumferential direction so as to correspond to the volume change of the compression chamber 32.
That is, when the pressure acting on the compression chamber 34 becomes larger than a normal value due to the inflow of the incompressible fluid, a force that is linearly moved in the circumferential direction acts on the orbiting scroll 26, and the slot of the adaptation member 40. The orbiting scroll 26 can be linearly moved in the circumferential direction while 42 is slidingly moved in the circumferential direction of the eccentric portion 16.
[0032]
Further, as a second embodiment of the scroll compressor according to the present invention, as shown in FIG. 4, a predetermined length from the outer peripheral surface of the original thick portion which starts to be formed by cutting the eccentric portion 16 of the crankshaft 6 is formed. The flange portion 56 is formed on the outside, and the boss 34 of the orbiting scroll 26 into which the conforming member 40 is inserted is formed on the upper surface of the flange portion 56 thus enlarged. The rest is configured in the same manner as in the first embodiment. By doing so, oil leakage can be more effectively prevented.
Further, as a third embodiment of the scroll compressor according to the present invention, as shown in FIG. 5, a predetermined width and height are formed on the outer peripheral surface of the lower surface of the adaptation member 40 which is in contact with the flange portion 56 of the crankshaft 6. A substantially annular rib 60 having a thickness is formed, and the others can be configured in the same manner as in the first embodiment.
[0033]
That is, since the lower surface of the conforming member 40 and the upper surface of the flange portion 56 of the crankshaft 6 must be brought into contact with each other to be sealed, precision grinding is required. When the upper surface of the flange portion 56 is ground, it takes a long processing time due to the interference of the eccentric portion 16 and the processing cost increases. Therefore, a rib 60 is formed on the outer peripheral edge of the lower surface of the conforming member 40, and In the middle, it is only necessary to perform precision grinding only on the portion in contact with the rib 60, so that the processing time can be reduced and the cost can be reduced.
[0034]
Further, as a fourth embodiment of the scroll compressor according to the present invention, as shown in FIG. 6, the scroll compressor has a predetermined width and height from the lower surface of the conforming member 40 that contacts the flange portion 56 of the crankshaft 6. The rib 62 to be projected can be formed, and the rest can be configured similarly to the first embodiment.
Further, as a fifth embodiment of the scroll compressor according to the present invention, as shown in FIG. 7, a sealing member 66 is engaged between the upper surface of the flange portion 56 of the crankshaft 6 and the lower surface of the conforming member 40. Thus, it is configured to prevent oil that is press-fitted into the upper surface of the eccentric portion 16 through the oil flow path 18 from leaking into the back pressure chamber 38, and the other configurations are the same as in the first embodiment. You can also
[0035]
That is, the sealing member 66 is made of a ring-type Teflon (registered trademark) material, and an insertion groove 68 is formed on the lower surface of the conforming member 40 corresponding to the sealing member 66 in order to mount the sealing member 66. Is done.
Further, as a sixth embodiment of the scroll compressor according to the present invention, as shown in FIG. 8, an annular insertion groove 72 is formed by cutting in the circumferential direction of the upper surface of the flange portion 56 of the crankshaft 6, and the insertion is performed. The sealing member 70 made of Teflon (registered trademark) can be inserted into the groove 72, and the others can be configured in the same manner as in the first embodiment.
[0036]
Further, as a seventh embodiment of the scroll compressor according to the present invention, a coil spring is inserted as an elastic body 76 between the inner peripheral surface of the adaptation member 40 and the outer peripheral surface of the eccentric portion 16 of the crankshaft 6, By locking both front ends of the coil springs to the peripheral surfaces of the conforming member 40 and the eccentric portion 16, an elastic force is applied to restore the original state after the conforming member 40 is slidingly moved. The others can also be configured in the same manner as in the first embodiment.
[0037]
Further, as an eighth embodiment of the scroll compressor according to the present invention, as shown in FIGS. 10 and 11, an annular adaptation member 80 rotatably inserted into the boss 34 of the orbiting scroll 26, The eccentric member 82 includes an eccentric hole 82 that is formed by being drilled eccentrically from the center of the adaptation member 80 and a cylindrical eccentric portion 84 that is rotatably inserted into the eccentric hole 82. It can also be configured in the same manner as in the first embodiment.
[0038]
Further, the operation of the eighth embodiment of the scroll compressor according to the present invention configured as described above is such that when the crankshaft 6 is rotated, the eccentric portion 84 is rotated in an eccentric state, so that the adaptation is performed. The orbiting scroll 26 orbits while the member 80 is rotated. At this time, when the orbiting scroll 26 moves linearly in the circumferential direction, the adaptation member 80 linearly moves in the circumferential direction while rotating around the eccentric hole 82.
[0039]
【The invention's effect】
As described above, in the scroll compressor according to the present invention, the adaptation member that enables linear movement of the orbiting scroll in the circumferential direction is engaged between the eccentric portion of the crankshaft and the boss of the orbiting scroll, and the compression chamber When the pressure of the compression chamber increases due to the inflow of liquid refrigerant, oil, and foreign substances of incompressible fluid, the orbiting scroll is linearly moved in the circumferential direction. Since the volume change can be actively dealt with, and the turning wrap of the orbiting scroll and the fixed wrap of the fixed scroll can be prevented from being damaged, the reliability of the compressor can be improved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing the configuration of a first embodiment of a scroll compressor according to the present invention.
FIG. 2 is an enlarged view showing a portion B in FIG.
3 is a cross-sectional view taken along line II-II in FIG.
FIG. 4 is an enlarged cross-sectional view of a B portion of FIG. 1 showing a second embodiment of the scroll compressor according to the present invention.
FIG. 5 is an enlarged cross-sectional view of part B of FIG. 1 showing a third embodiment of the scroll compressor according to the present invention.
6 is an enlarged cross-sectional view of a B portion of FIG. 1 showing a fourth embodiment of the scroll compressor according to the present invention.
7 is an enlarged cross-sectional view of part B of FIG. 1 showing a fifth embodiment of a scroll compressor according to the present invention.
FIG. 8 is an enlarged sectional view of part B of FIG. 1 showing a sixth embodiment of a scroll compressor according to the present invention.
9 is a cross-sectional view taken along the line II-II of FIG. 2 showing a seventh embodiment of the scroll compressor according to the present invention.
FIG. 10 is an enlarged sectional view of part B of FIG. 1 showing an eighth embodiment of a scroll compressor according to the present invention.
11 is a cross-sectional view taken along line III-III in FIG.
FIG. 12 is a cross-sectional view showing a conventional scroll compressor.
13 is an enlarged view showing a portion A of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 2 ... Casing 4 ... Drive part 6 ... Crankshaft 8 ... Compression part 10 ... Stator 12 ... Rotor 14 ... Main frame 16 ... Eccentric part 18 ... Oil flow path 20 ... Fixed wrap 22 ... Fixed scroll 24 ... Turning wrap 26 ... Orbiting scroll 28 ... Suction pipe 30 ... Discharge pipe 32 ... Compression chamber 34 ... Boss 36 ... Discharge hole 38 ... Back pressure chamber 40 ... Adaptation member 42 ... Slot 44 ... Step part 46, 46a ... Linear part 50 ... Sealing 56 ... Flange part 60, 62 ... rib 66 ... sealing member 76 ... elastic body

Claims

A casing (2) in which high pressure is formed;
A drive unit (4) that is mounted in a downward direction inside the casing (2) and into which a crankshaft (6) is inserted to generate a driving force;
An orbiting scroll (26) that is eccentrically engaged with the crankshaft (6) above the crankshaft (6), and a fixed scroll (22) that forms a compression chamber (32) between the orbiting scroll (26) And a compression section (8) configured to perform the compression action of the fluid,
When the incompressible substance is inserted into the compression chamber (32) by being inserted between the orbiting scroll (26) of the compression unit (8) and the crankshaft (6), the orbiting scroll (26) is moved to the orbiting scroll (26). Adaptation means for separating from the scroll (22),
The adaptation means is rotatably inserted into the inner peripheral surface of a boss (34) drilled in the lower surface of the orbiting scroll (26), and an eccentric part (16) of the crankshaft (6) is at the center. A slot (42) inserted for sliding movement is composed of a perforated conforming member (40),
On the outer side of the lower surface of the adaptation member (40), a rib (60) is formed which is in close contact with the upper surface of the boundary portion where the eccentric portion (16) of the crankshaft (6) is cut and formed. Scroll compressor characterized by.

A casing (2) in which high pressure is formed;
A drive unit (4) that is mounted in a downward direction inside the casing (2) and into which a crankshaft (6) is inserted to generate a driving force;
An orbiting scroll (26) that is eccentrically engaged with the crankshaft (6) above the crankshaft (6), and a fixed scroll (22) that forms a compression chamber (32) between the orbiting scroll (26) And a compression section (8) configured to perform the compression action of the fluid,
When the incompressible substance is inserted into the compression chamber (32) by being inserted between the orbiting scroll (26) of the compression unit (8) and the crankshaft (6), the orbiting scroll (26) is moved to the orbiting scroll (26). Adaptation means for separating from the scroll (22),
The adaptation means is rotatably inserted into the inner peripheral surface of a boss (34) drilled in the lower surface of the orbiting scroll (26), and an eccentric part (16) of the crankshaft (6) is at the center. A slot (42) inserted for sliding movement is composed of a perforated conforming member (40),
On the inner side of the lower surface of the adaptation member (40), a rib (62) is formed which is in close contact with the upper surface of the boundary portion where the eccentric portion (16) of the crankshaft (6) is formed by cutting. Scroll compressor characterized by.

A casing (2) in which high pressure is formed;
A drive unit (4) that is mounted in a downward direction inside the casing (2) and into which a crankshaft (6) is inserted to generate a driving force;
An orbiting scroll (26) that is eccentrically engaged with the crankshaft (6) above the crankshaft (6), and a fixed scroll (22) that forms a compression chamber (32) between the orbiting scroll (26) And a compression section (8) configured to perform the compression action of the fluid,
When the incompressible substance is inserted into the compression chamber (32) by being inserted between the orbiting scroll (26) of the compression unit (8) and the crankshaft (6), the orbiting scroll (26) is moved to the orbiting scroll (26). Adaptation means for separating from the scroll (22),
The adaptation means is rotatably inserted into the inner peripheral surface of a boss (34) drilled in the lower surface of the orbiting scroll (26), and an eccentric part (16) of the crankshaft (6) is at the center. A slot (42) inserted for sliding movement is composed of a perforated conforming member (40),
A scroll compressor, wherein a sealing member (66) is inserted between the lower surface of the adaptation member (40) and the upper surface of the crankshaft (6).

The scroll compressor according to claim 3, wherein an insertion groove (68) into which the sealing member (66) is inserted is cut and formed on a lower surface of the adaptation member (40).

The scroll compressor according to claim 3, wherein an insertion groove (68) into which the sealing member (66) is inserted is cut and formed on an upper surface of the crankshaft (6).

The scroll compressor according to claim 3, wherein the sealing member (66) is made of a Teflon (registered trademark) material.

The crankshaft (6) has an oil passage (18) drilled in the center in the lengthwise direction, and is decentered so as to have a smaller cross-sectional area at the top than the cross-sectional area of the crankshaft (6). Part (16) is formed to extend,
Eccentric portion of the crank shaft (16), as the eccentric portion (16) can be inserted into the boss (34) of the orbiting scroll (26), the stage of the upper surface from the predetermined height of the crankshaft (6) It is formed to extend long in the upper surface direction so as to have
The crankshaft (6) is formed so as to extend long in the upper surface direction so as to have a step of a predetermined height from the upper surface of the crankshaft (6), and the cross section of the extended portion is curved with the left and right sides facing each other and the upper and lower sides facing each other. The scroll compressor according to any one of claims 1 to 6, wherein parallel straight portions (46) are formed.

The adaptation means is rotatably inserted into the inner peripheral surface of a boss (34) drilled in the lower surface of the orbiting scroll (26), and an eccentric portion (16) of the crankshaft (6) is at the center. The scroll compressor according to claim 7, characterized in that the slot (42) inserted so as to be slidable comprises a conforming member (40) having a perforated hole.

The slot (42) of the conforming member (40) is inserted into the eccentric straight portion (16) of the crankshaft (6) so that the outer peripheral straight portion of the eccentric portion (16) can slide in the linear direction. The scroll compression according to claim 7, wherein a straight line portion (46a) corresponding to the straight line portion (46) of the eccentric portion (16) is formed so that 16) can slide in a straight line direction by a predetermined distance. Machine.

The adaptation means is rotatably inserted into the inner peripheral surface of a boss (34) drilled in the lower surface of the orbiting scroll (26), and an eccentric part (16) of the crankshaft (6) is at the center. A slot (42) inserted for sliding movement is composed of a perforated conforming member (40),
The sealing (50) is inserted between the outer peripheral surface of the adaptation member (40) and the inner peripheral surface of the boss (34) of the orbiting scroll (26). The scroll compressor described.

The scroll compressor according to claim 10, wherein a cross-sectional area of the crankshaft (6) is the same as an area of an outer diameter portion of the adaptation member (40).

The flange portion (56) having a predetermined diameter on the outer side is enlargedly formed on an upper surface of a boundary portion where the eccentric portion (16) of the crankshaft (6) starts to be cut and formed. The scroll compressor described in 10.

Both ends of the elastic body (76) are inserted and locked between the inner peripheral surface of the adaptation member (40) and the outer peripheral surface of the eccentric part (16) of the crankshaft (6). The scroll compressor according to any one of claims 1 to 6.

The scroll compressor according to claim 13, wherein the elastic body (76) is a coil spring.

The adaptation means is rotatably inserted into a boss (34) formed on the lower surface of the orbiting scroll (26) and is eccentric to one side of the center so that the eccentric part of the crankshaft (6) is inserted. The scroll compressor according to any one of claims 1 to 6, characterized in that the eccentric hole (82) is formed of a conforming member having a perforated hole.

The scroll compressor according to claim 15, wherein the eccentric portion of the crankshaft is formed in a ring shape that is eccentric from an upper surface of the crankshaft and extends downward.

The adaptation member (40) is formed in a ring shape that is rotatably inserted into the inner peripheral surface of the boss (34), and the center of the crankshaft is located at a point eccentric from the center by a predetermined distance. The scroll compressor according to claim 15.