JP3780006B2 - Co-rotating scroll compressor - Google Patents

Co-rotating scroll compressor Download PDF

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Publication number
JP3780006B2
JP3780006B2 JP04853094A JP4853094A JP3780006B2 JP 3780006 B2 JP3780006 B2 JP 3780006B2 JP 04853094 A JP04853094 A JP 04853094A JP 4853094 A JP4853094 A JP 4853094A JP 3780006 B2 JP3780006 B2 JP 3780006B2
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JPH07259760A (en
Inventor
弘通 谷和
昌稔 澤潟
弘毅 上石田
祥孝 芝本
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Daikin Industries Ltd
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Daikin Industries Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/023Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where both members are moving

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Description

【0001】
【産業上の利用分野】
本発明は、2つのスクロールを同じ方向に回転させて圧縮を行う共回りスクロール圧縮機に関する。
【0002】
【従来の技術】
従来、例えば、特開平3−194180号公報に記載されているように、密閉ケーシング内に駆動軸の軸受部をもつ駆動側ハウジングと、従動軸の軸受部をもつ従動側ハウジングとを備え、これら各ハウジングをボルト結合して、密閉ケーシングの内部空間と区画した空間を形成し、この空間に駆動スクロールと従動スクロールとから成る圧縮要素を内装して、前記駆動スクロールの駆動軸の回転駆動に伴って、前記従動スクロールを従動させ、該従動スクロールをこの従動スクロールに設ける従動軸で前記従動側ハウジングの軸受部に回転自由に軸受支持するようにした共回りスクロール圧縮機が知られている。
【0003】
この共回りスクロール圧縮機は、図6に示すように、密閉ケーシングA内にモータBとスクロール圧縮要素Cとを内装し、前記モータBの下方に前記密閉ケーシングAに固定される筒状の駆動側ハウジングHを配設し、この駆動側ハウジングHの中央に軸受部H1を設けて、前記モータBの回転子B1に連結される駆動軸Eを軸受支持するようにしている。さらに、前記駆動側ハウジングHの下部に筒状の従動側ハウジングJを配設するのであって、該従動側ハウジングJは、ほぼ中央部に軸受部J1を設けている。そして、前記従動側ハウジングJの筒部と前記駆動側ハウジングHの筒部とを対向させた状態で各ハウジングH,JをボルトLで結合して、前記密閉ケーシングAの内部空間と区画された低圧空間Kを形成している。
【0004】
さらに、この低圧空間Kに、前記駆動軸Eの軸端部に連結される駆動スクロールDと、前記従動側ハウジングJの軸受部J1に軸受支持される従動軸Gを有する従動スクロールFとから成る圧縮要素Cを内装し、前記駆動スクロールDの前記駆動軸Eによる回転駆動に伴って、前記従動スクロールFを従動回転させて、前記低圧空間Kに取り入れるガス流体を圧縮し、前記ケーシングAの内部空間に吐出するようにしている。
【0005】
【発明が解決しようとする課題】
しかしながら、上記した共回りスクロール圧縮機では、前記低圧空間Kを、前記ケーシングAの内部空間と区画するため、前記駆動側ハウジングHと従動側ハウジングJとをボルトLで結合しているが、前記低圧空間K内に前記圧縮要素Cを内装する必要があることから、前記各ハウジングH,Jには、前記各スクロールD,Fを内装可能な径とした筒部を設けて、これら筒部の端部を突き合わせ、前記駆動側ハウジングHと従動側ハウジングJとの一方から挿入する前記ボルトLにより結合している。このため、前記筒部は、その肉厚をボルト穴を設け得る肉厚としているのであって、この結果、前記各ハウジングG,Jの筒部外径寸法が大きくなって、前記ケーシングAの胴部外径が必要以上に大きくなり、圧縮機全体が大型化する問題があった。
【0006】
本発明は、以上の問題に鑑みてなしたもので、その目的は、各スクロールによる圧縮容積を変更することなく、共回りのスクロール圧縮要素を内装するハウジングの外径が必要以上に大きくなることなく、圧縮機全体としての小型化を可能とする共回りスクロール圧縮機を提供することにある。
【0007】
【課題を解決するための手段】
請求項1記載の発明は、駆動軸4の軸受部81をもつ駆動側ハウジング8と、従動軸6の軸受部91をもつ従動側ハウジング9とを備え、これら各ハウジング8,9をボルト結合して、密閉ケーシング1の内部空間と区画された低圧空間10を形成し、この空間10に駆動スクロール5と従動スクロール7とから成る圧縮要素3を内装した共回りスクロール圧縮機において、前記駆動側ハウジング8と従動側ハウジング9との一方に前記各スクロール5,7の外周を取囲む囲壁82または94を形成し、前記駆動側ハウジング8と従動側ハウジング9との結合部を、前記各スクロール5,7の外周に対し、軸方向に離れた位置に形成して、前記囲壁82または94をもった前記駆動側ハウジング8または従動側ハウジング9の前記結合部に、前記囲壁82または94より内方に張り出して径方向厚さを厚くしたボルト取付部83または95‥‥を周方向に断続して設けると共に、前記駆動スクロール5及び従動スクロール7の少なくとも一方の外周部に、前記ボルト取付部83または95‥‥を回避して前記囲壁82または94内に挿入可能とする切欠52,72を設けたのである。
【0008】
請求項2記載の発明は、前記駆動側ハウジング8に駆動スクロール5及び従動スクロール7の外周を取囲む囲壁82を設け、この囲壁82に設けるボルト取付部83に、従動側ハウジング9の外側から挿入する取付ボルトLを締め込むようにしたのである。
【0009】
請求項3記載の発明は、前記従動側ハウジング9に駆動スクロール5及び従動スクロール7の外周を取囲む囲壁94を設け、この囲壁94に設けるボルト取付部95に、駆動側ハウジング8の外側から挿入する取付ボルトLを締め込むようにしたのである。
【0010】
【作用】
請求項1記載の発明では、前記駆動側ハウジング8と従動側ハウジング9との結合部を、前記各スクロール5,7の外周に対し、軸方向に離れた位置に形成して、前記囲壁82または94をもった前記ハウジング8,9の一方に、前記ボルト取付部83または95‥‥を周方向に断続して設け、前記各スクロール5,7の少なくとも一方には、前記切欠52,72を設けたから、前記囲壁82または94の肉厚をボルト穴を開けるのに必要な肉厚に確保することなく、前記駆動側ハウジング8と従動側ハウジング9とをボルト結合により結合でき、しかも、前記各スクロール5,7の前記囲壁82または94内への挿入も、前記各スクロール5,7に形成した切欠52,72によって前記駆動側ハウジング8に形成したボルト取付部83または95を回避して簡単に挿入することができるのであるから、各スクロール5,7による圧縮容積を変更することなく、共回りの前記圧縮要素3を内装する各ハウジング8,9の外径が必要以上に大きくなるのを防止でき、圧縮機全体として従来に比べて小型化できるのである。
【0011】
さらに、請求項2記載の発明では、前記駆動側ハウジング8に駆動スクロール5及び従動スクロール7の外周を取囲む囲壁82を設け、この囲壁82に設けるボルト取付部83に、従動側ハウジング9の外側から挿入する取付ボルトLを締め込むようにしたから、各ハウジング8,9内に前記圧縮要素3を内装する際、前記駆動側ハウジング8に、長い前記駆動軸4を有する前記駆動スクロール5及び従動スクロール7を内装した後、前記駆動軸4を軸受支持しなくてよい前記従動側ハウジング9を前記囲壁82を閉鎖してボルト結合するだけでよいので、組付けを良好に行えるのである。
【0012】
また、請求項3記載の発明では、前記従動側ハウジング9に駆動スクロール5及び従動スクロール7の外周を取囲む囲壁94を設け、この囲壁94に設けるボルト取付部95に、駆動側ハウジング8の外側から挿入する取付ボルトLを締め込むようにしたから、各ハウジング8,9内に前記圧縮要素3を内装して、前記取付ボルトLを締め込んで結合した後、密閉ケーシング1に内装する場合、前記従動側ハウジング9の背面、即ち反モータ側には前記取付ボルトLが突出することなく平坦に形成でき、従って、該平坦面を支持面として前記各ハウジング8,9の結合体を密閉ケーシング1に内装することができ、このため、前記結合体の密閉ケーシング1への組付け性を良好にできるのである。
【0013】
【実施例】
本発明の第1実施例を図1に基づいて説明する。図1に示す第1実施例は、横形の共回りスクロール圧縮機であって、この圧縮機は、横長密閉ケーシング1の内部で長手方向一側に、ロータ21とステータ22とから成るモータ2を配設すると共に、前記ケーシング1の内方他側に共回り形のスクロール圧縮要素3を配設している。この圧縮要素3は、前記モータ2のロータ21に結合される駆動軸4と、一体に突設した駆動スクロール5と、前記駆動軸4の軸心に対し偏心する従動軸6を突設し、前記駆動スクロール5の駆動に伴い従動回転しながら旋回運動する従動スクロール7とから成り、これら各スクロール5,7を次に説明する駆動側ハウジング8と従動側ハウジング9とにより形成する低圧空間10に内装している。前記駆動側ハウジング8は、前記駆動軸4を支持する第1軸受部81を備えると共に、前記従動側ハウジング9は、前記従動軸6を支持する第2軸受部91を設けている。
【0014】
即ち、前記駆動スクロール5を軸受支持する駆動側ハウジング8と、前記従動スクロール7を軸受支持する従動側ハウジング9とを対設させて、これら各ハウジング8,9を取付ボルトLなどで結合することにより前記ケーシング1の内部空間と区画された低圧空間10を形成するのであって、この低圧空間10に、前記圧縮要素3の前記駆動及び従動スクロール5,7を対向状に内装すると共に、前記駆動軸4を前記駆動側ハウジング8に設ける第1軸受部81を介して軸受支持し、また、前記従動側ハウジング9の第2軸受部91に前記従動軸6を回転自由に軸受支持している。尚、前記ロータ21から外方に突出される先端側は、前記ケーシング1における前記モータ2の反圧縮要素側空間に設けた支持体11に軸受11aを介して両持ち状に軸受支持している。また、前記駆動軸4の中心部には、一端側を前記駆動スクロール5に開設した吐出口16に連通させ、かつ、他端側を前記モータ2の反圧縮要素側空間に開口させる吐出通路15を形成しており、さらに、前記従動側ハウジング9には、前記低圧空間10に低圧ガスを導入される吸入管14を接続している。
【0015】
また、前記駆動スクロール5に、前記従動スクロール7の鏡板71を挟み込むようにスラストプレート12をボルト結合し、このスラストプレート12と前記鏡板71との間の収容空間12aに、前記駆動スクロール5の駆動に伴い前記従動スクロール7を従動回転させながら旋回運動させるためのオルダム継手13を介装している。
【0016】
従って、以上の構成において、前記モータ2の回転に伴い前記駆動軸4を介して駆動スクロール5が回転駆動されるとき、前記オルダム継手13とスラストプレート12とを介して前記従動スクロール7を駆動スクロール5に従動させながら前記従動軸6を中心に旋回運動させ、この旋回運動によって、前記ケーシング1を貫通して前記従動側ハウジング9に接続した吸入管14から低圧ガスが前記低圧空間10内に導入され、このガスが前記各スクロール5,7間の圧縮室内に吸入されて圧縮され、圧縮された高圧のガスは、前記駆動スクロール5に設けた吐出口16から前記駆動軸4内の吐出通路15を経て前記モータ2の反圧縮要素側空間へと吐出され、該反圧縮要素側空間に開口する吐出管17から外部に吐出されるのである。
【0017】
しかして図1の第1実施例では、前記駆動側ハウジング8に前記各スクロール5,7の外周を取囲む囲壁82を形成し、前記駆動側ハウジング8と従動側ハウジング9との結合部を、前記各スクロール5,7の外周に対し、軸方向に離れた位置に形成して、前記囲壁82をもった前記駆動側ハウジング8の前記結合部に、図2に示したように前記囲壁82より内方に張り出して径方向厚さを厚くしたボルト取付部83‥‥を周方向に断続して設けると共に、前記駆動スクロール5及び従動スクロール7の外周部に、図2及び図3のように前記各ボルト取付部83‥‥を回避して前記囲壁82内に挿入可能とする切欠52,72を設けて、前記囲壁82に設ける前記各ボルト取付部83‥‥に、前記従動側ハウジング9の外側から挿入する取付ボルトLを締め込むようにしたのである。
【0018】
具体的には、図1に示すように、前記駆動側ハウジング8は、前記モータ2に対向し、前記ケーシング1の内径とほぼ同径の外径をもち、該ケーシング1内を画成する画成部84と、該画成部84の中央に設ける筒状の前記第1軸受部81と、前記画成部84の周縁部から反モータ側に延び、前記駆動スクロール5及び従動スクロール7の外周を取囲む筒状の囲壁82とから構成し、また、前記従動側ハウジング9は、前記ケーシング1の内径とほぼ同径で前記囲壁82の開口部を閉鎖する円板状の閉鎖部92と、該円板状閉鎖部92に一体に設けるか、または、図1のように、溶接又はボルト止めだけにより一体に固定され、前記囲壁82内に内装可能な筒状の前記第2軸受部91とから構成している。また、図1において、前記第2軸受部91は、前記円板状閉鎖部92に固定するための径大なフランジ部91aを形成しており、また、前記駆動側ハウジング8と従動側ハウジング9との結合部、即ち、前記囲壁82の端部と前記従動側ハウジング9の前記円板状閉鎖部92の周縁部との結合部が、前記各スクロール5,7の外周に対し、反モータ側で軸方向に離れた位置に形成するごとく成している。
【0019】
そして、図1及び図2に示した実施例では、前記囲壁82の内径より内方に張り出して径方向厚さを厚くしたボルト取付部83‥‥を、前記駆動側ハウジング8の軸心を対称に2箇所設けて、該各ボルト取付部83‥‥にそれぞれ2つのボルト穴85‥‥を形成している。また、前記従動側ハウジング9における前記円板状閉鎖部92には、前記ボルト穴85との対向位置に、前記取付ボルトLを挿通させる4つ貫通穴93‥‥を形成している。
【0020】
また、前記駆動スクロール5及び従動スクロール7の外周部には、図2及び図3に示すように、前記した2つのボルト取付部83‥‥を回避して前記囲壁82内に挿入可能とする2つの切欠52,72、即ち、前記各ボルト取付部83‥‥の張り出し形状に沿う2つの前記切欠52,72を設けている。従って、前記各スクロール5,7を前記囲壁82内に挿入する際、前記切欠52,72を前記各ボルト取付部83‥‥に対向させることにより挿入することができるのであり、また、この挿入後、前記囲壁82の端部に前記従動側ハウジング9を重ね合わせて、前記各ボルト取付部83‥‥の前記各ボルト穴85‥‥に、前記取付ボルトLを前記従動側ハウジング9の外側から前記貫通穴93‥‥を挿通させて締め込むことにより、結合できるのであって、前記駆動側ハウジング8を前記ケーシング1に内装固定した状態でも、前記従動ハウジング9の結合が可能となる。
【0021】
尚、前記駆動側ハウジング8及び従動側ハウジング9には、一端が前記ケーシング1内底部の油溜Oに連通し、他端が前記各軸受部81,91に開口される給油路18を形成している。即ち、図1の実施例において、前記給油路18は、前記各ハウジング8,9の下部側に形成するのであって、詳記すると、この給油路18は、前記駆動側ハウジング8の下部側を軸方向にそって切り込み、その一端側を、前記油溜Oに開口する第1給油路18aと、前記駆動側ハウジング8に形成され、一端が前記第1給油路18aに連通し、他端が駆動側ハウジング8の前記第1軸受部81に開口する第2給油路18bと、前記従動側ハウジング9に形成され、一端が前記第1給油路18aに連通し、他端が前記従動軸6を軸受支持する前記第2軸受部91に連通する第3給油路18cとから形成している。
【0022】
そして、前記各ハウジング8,9で形成される前記低圧空間10は、前記油溜Oに対し低圧に保持されることから、該油溜Oに開口する前記給油路18から、これらの差圧により前記油溜Oの油を前記第1〜第3給油路18a〜18cを介して前記各軸受部81,92に給油されるのである。
【0023】
以上のように、前記駆動側ハウジング8に前記各スクロール5,7の外周を取囲む囲壁82を形成し、前記駆動側ハウジング8と従動側ハウジング9との結合部を、前記各スクロール5,7の外周に対し、軸方向に離れた位置に形成して、前記囲壁82をもった前記駆動側ハウジング8の前記結合部に、前記囲壁82より内方に張り出して径方向厚さを厚くしたボルト取付部83‥‥を周方向に断続して設けると共に、前記駆動スクロール5及び従動スクロール7の外周部に、前記各ボルト取付部83‥‥を回避して前記囲壁82内に挿入可能とする切欠52,72を設けて、前記各ボルト取付部83‥‥に、従動側ハウジング9の外側から挿入する取付ボルトLを締め込むようにしたから、前記囲壁82の肉厚をボルト穴を開けるのに必要な肉厚に確保することなく、シールに必要な最小厚さにできながら、前記駆動側ハウジング8と従動側ハウジング9とをボルト結合により結合でき、しかも、前記各スクロール5,7の前記囲壁82内への挿入も、前記各スクロール5,7に形成した切欠52,72によって前記駆動側ハウジング8に形成したボルト取付部83を回避して簡単に挿入することができるのであるから、各スクロール5,7による圧縮容積を変更することなく、共回りの前記圧縮要素3を内装する各ハウジング8,9の外径が必要以上に大きくなるのを防止でき、圧縮機全体として従来に比べて小型化できるのである。
【0024】
しかも、前記第1実施例では、前記駆動側ハウジング8に囲壁82を形成したから、各ハウジング8,9内に前記圧縮要素3を内装する際、前記駆動側ハウジング8に、長い前記駆動軸4を有する前記駆動スクロール5及び従動スクロール7を内装した後、前記駆動軸4を軸受支持しなくてよい前記従動側ハウジング9を前記囲壁82を閉鎖してボルト結合するだけでよいので、組付けを良好に行えるのである。
【0025】
また、前記第1実施例では、前記駆動スクロール5と従動スクロール7との双方に前記切欠52,72を形成したが、図2の二点破線で示すように、どちらか一方のスクロールの鏡板を前記切欠52,72に沿った円形に形成するようにして、スクロールの鏡板の外周全体を切欠いた状態に形成するようにしてもよい。斯くするときには、鏡板の小さいスクロールの前記囲壁82内に内装する際の挿入をより簡単に行えるのである。
【0026】
次に、第2実施例について図4及び図5に基づいて説明する。図4に示す第2実施例は、従動側ハウジング9に駆動スクロール5と従動スクロール7との外周を取囲む囲壁94を形成し、駆動側ハウジング8と前記従動側ハウジング9との結合部を、前記各スクロール5,7の外周に対し、軸方向に離れた位置に形成して、前記囲壁94をもった前記従動側ハウジング9の前記結合部に、前記囲壁94より内方に張り出して径方向厚さを厚くしたボルト取付部95を周方向に断続して設け、このボルト取付部95にボルト穴95aを形成すると共に、前記駆動側ハウジング8に前記ボルト穴95aに対向するボルト挿通用貫通穴86を設け、前記駆動スクロール5及び従動スクロール7の外周部に、前記ボルト取付部95を回避して前記囲壁94内に挿入可能とする切欠52,72を設けて、前記囲壁94に設けるボルト取付部95に、前記駆動側ハウジング8の外側から前記貫通穴86を介して挿入する取付ボルトLを締め込むことにより、結合するようにしたのである。
【0027】
また、図4に示した第2実施例は、図5に示すように、3つの前記ボルト取付部95‥‥を設けると共に、前記駆動スクロール5及び従動スクロール7の外周部には、前記各ボルト取付部95‥‥を回避して前記囲壁94内に挿入可能とする3つの切欠52,72、即ち、前記各ボルト取付部95‥‥の張り出し形状に沿う3つの前記切欠52,72を設けている。
【0028】
以上のように第2実施例においても、前記第1実施例のように、前記囲壁94の肉厚をボルト穴を開けるのに必要な肉厚に確保することなく、前記駆動側ハウジング8と従動側ハウジング9とをボルト結合により結合でき、しかも、前記各スクロール5,7の前記囲壁94内への挿入も、前記各スクロール5,7に形成した切欠52.72によって前記従動側ハウジング9に形成した前記各ボルト取付部95‥‥を回避して簡単に挿入することができるのであるから、各スクロール5,7による圧縮容積を変更することなく、共回りの前記圧縮要素3を内装する各ハウジング8,9の外径が必要以上に大きくなるのを防止でき、圧縮機全体として従来に比べて小型化できるのである。
【0029】
しかも、前記第2実施例では、前記従動側ハウジング9に囲壁94を形成したから、各ハウジング8,9内に前記圧縮要素3を内装して、前記取付ボルトLを締め込んで結合した後、密閉ケーシング1に内装する場合、前記従動側ハウジング9の背面、即ち反モータ側には前記取付ボルトLが突出することなく平坦に形成でき、従って、該平坦面を支持面として前記各ハウジング8,9の結合体を密閉ケーシング1に内装することができ、このため、前記結合体の密閉ケーシング1への組付け性を良好にできるのである。
【0030】
以上の各実施例では、前記圧縮機として横形式のものを示したが、本発明は縦形式のものに適用できることは勿論である。
【0031】
【発明の効果】
請求項1記載の発明によれば、共回りスクロール圧縮機において、前記駆動側ハウジング8と従動側ハウジング9との一方に前記各スクロール5,7の外周を取囲む囲壁82または94を形成し、前記駆動側ハウジング8と従動側ハウジング9との結合部を、前記各スクロール5,7の外周に対し、軸方向に離れた位置に形成して、前記囲壁82または94をもった前記駆動側ハウジング8または従動側ハウジング9の前記結合部に、前記囲壁82または94より内方に張り出して径方向厚さを厚くしたボルト取付部83または95‥‥を周方向に断続して設けると共に、前記駆動スクロール5及び従動スクロール7の外周部に、前記ボルト取付部83または95‥‥を回避して前記囲壁82または94内に挿入可能とする切欠52,72を設けたから、前記囲壁82または94の肉厚をボルト穴を開けるのに必要な肉厚に確保することなく、前記駆動側ハウジング8と従動側ハウジング9とをボルト結合により結合でき、しかも、前記各スクロール5,7の前記囲壁82または94内への挿入も、前記各スクロール5,7に形成した切欠52,72によって前記駆動側ハウジング8に形成したボルト取付部83または95を回避して簡単に挿入することができるのであるから、各スクロール5,7による圧縮容積を変更することなく、共回りの前記圧縮要素3を内装する各ハウジング8,9の外径が必要以上に大きくなるのを防止でき、圧縮機全体として従来に比べて小型化できるのである。
【0032】
さらに、請求項2記載の発明によれば、前記駆動側ハウジング8に駆動スクロール5及び従動スクロール7の外周を取囲む囲壁82を設け、この囲壁82に設けるボルト取付部83に、従動側ハウジング9の外側から挿入する取付ボルトLを締め込むようにしたから、各ハウジング8,9内に前記圧縮要素3を内装する際、前記駆動側ハウジング8に、長い前記駆動軸4を有する前記駆動スクロール5及び従動スクロール7を内装した後、前記駆動軸4を軸受支持しなくてよい前記従動側ハウジング9を前記囲壁82を閉鎖してボルト結合するだけでよいので、組付けを良好に行えるのである。
【0033】
また、請求項3記載の発明によれば、前記従動側ハウジング9に駆動スクロール5及び従動スクロール7の外周を取囲む囲壁94を設け、この囲壁94に設けるボルト取付部95に、駆動側ハウジング8の外側から挿入する取付ボルトLを締め込むようにしたから、各ハウジング8,9内に前記圧縮要素3を内装して、前記取付ボルトLを締め込んで結合した後、密閉ケーシング1に内装する場合、前記従動側ハウジング9の背面、即ち反モータ側には前記取付ボルトLが突出することなく平坦に形成でき、従って、該平坦面を支持面として前記各ハウジング8,9の結合体を密閉ケーシング1に内装することができ、このため、前記結合体の密閉ケーシング1への組付け性を良好にできるのである。
【図面の簡単な説明】
【図1】本発明の第1実施例の共回りスクロール圧縮機を示す縦断面図。
【図2】同第1実施例で駆動側ハウジングに従動スクロールを挿入する時を示す説明図。
【図3】同第1実施例の駆動スクロールの平面図。
【図4】本発明の第2実施例を示す縦断面図。
【図5】同第2実施例で従動側ハウジングに従動スクロールを挿入する時を示す説明図。
【図6】従来の共回りスクロール圧縮機を示す縦断面図。
【符号の説明】
1 密閉ケーシング 8 駆動側ハウジング
10 低圧空間 81 軸受部(第1)
3 圧縮要素 82 囲壁
4 駆動軸 83 ボルト取付部
5 駆動スクロール 9 従動側ハウジング
52 切欠 91 軸受部(第2)
6 従動軸 94 囲壁
7 従動スクロール 95 ボルト取付部
72 切欠 L 取付ボルト
[0001]
[Industrial application fields]
The present invention relates to a co-rotating scroll compressor that performs compression by rotating two scrolls in the same direction.
[0002]
[Prior art]
Conventionally, for example, as described in JP-A-3-194180, a drive-side housing having a bearing portion of a drive shaft in a hermetic casing and a driven-side housing having a bearing portion of a driven shaft are provided. Each housing is bolted together to form a space that is partitioned from the internal space of the sealed casing, and a compression element composed of a drive scroll and a driven scroll is provided in this space, and the drive shaft of the drive scroll is driven to rotate. A co-rotating scroll compressor is known in which the driven scroll is driven and the driven scroll is rotatably supported on a bearing portion of the driven housing by a driven shaft provided on the driven scroll.
[0003]
As shown in FIG. 6, this co-rotating scroll compressor has a cylindrical drive in which a motor B and a scroll compression element C are housed in a hermetic casing A and fixed to the hermetic casing A below the motor B. A side housing H is provided, and a bearing portion H1 is provided in the center of the drive side housing H so that the drive shaft E connected to the rotor B1 of the motor B is supported by the bearing. Further, a cylindrical driven side housing J is disposed below the drive side housing H, and the driven side housing J is provided with a bearing portion J1 at a substantially central portion. Then, the housing H and J are coupled with a bolt L in a state where the cylinder portion of the driven housing J and the cylinder portion of the drive side housing H are opposed to each other, thereby being partitioned from the internal space of the sealed casing A. A low pressure space K is formed.
[0004]
Further, the low pressure space K includes a driving scroll D connected to the shaft end of the driving shaft E, and a driven scroll F having a driven shaft G supported by a bearing portion J1 of the driven housing J. A compression element C is housed, and the driven scroll F is driven to rotate in accordance with the rotational drive of the drive scroll D by the drive shaft E to compress the gas fluid taken into the low-pressure space K, and the inside of the casing A It discharges into the space.
[0005]
[Problems to be solved by the invention]
However, in the above-described co-rotating scroll compressor, the drive side housing H and the driven side housing J are coupled with the bolt L in order to partition the low pressure space K from the internal space of the casing A. Since the compression element C needs to be housed in the low-pressure space K, each housing H, J is provided with a cylindrical portion having a diameter capable of housing the scrolls D, F. The ends are abutted and connected by the bolt L inserted from one of the drive side housing H and the driven side housing J. For this reason, the cylindrical portion has a thickness that can be provided with a bolt hole. As a result, the outer diameter of the cylindrical portion of each of the housings G and J increases, and the barrel of the casing A There was a problem that the outer diameter of the part became larger than necessary and the entire compressor was enlarged.
[0006]
The present invention has been made in view of the above problems, and an object of the present invention is to increase the outer diameter of the housing in which the co-rotating scroll compression element is built more than necessary without changing the compression volume of each scroll. In addition, the present invention is to provide a co-rotating scroll compressor that enables downsizing of the entire compressor.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 includes a drive side housing 8 having a bearing portion 81 of the drive shaft 4 and a driven side housing 9 having a bearing portion 91 of the driven shaft 6, and these housings 8 and 9 are bolted together. In the co-rotating scroll compressor in which the low pressure space 10 partitioned from the internal space of the hermetic casing 1 is formed, and the compression element 3 including the driving scroll 5 and the driven scroll 7 is housed in the space 10, 8 or the driven housing 9 is formed with a surrounding wall 82 or 94 surrounding the outer periphery of each of the scrolls 5, 7, and a connecting portion between the driving housing 8 and the driven housing 9 is connected to each of the scrolls 5, 5. 7 is formed at a position away from the outer periphery in the axial direction, and the connecting portion of the driving side housing 8 or the driven side housing 9 having the surrounding wall 82 or 94 A bolt mounting portion 83 or 95... Projecting inward from the surrounding wall 82 or 94 to increase the radial thickness is provided intermittently in the circumferential direction, and at least one outer peripheral portion of the drive scroll 5 and the driven scroll 7. Further, notches 52 and 72 that can be inserted into the surrounding wall 82 or 94 while avoiding the bolt mounting portion 83 or 95... Are provided.
[0008]
According to the second aspect of the present invention, the drive side housing 8 is provided with a surrounding wall 82 that surrounds the outer periphery of the driving scroll 5 and the driven scroll 7, and the bolt mounting portion 83 provided on the surrounding wall 82 is inserted from the outside of the driven side housing 9. The mounting bolt L to be tightened is tightened.
[0009]
According to the third aspect of the present invention, the driven housing 9 is provided with a surrounding wall 94 that surrounds the outer periphery of the driving scroll 5 and the driven scroll 7, and the bolt mounting portion 95 provided on the surrounding wall 94 is inserted from the outside of the driving side housing 8. The mounting bolt L to be tightened is tightened.
[0010]
[Action]
In the first aspect of the present invention, the coupling portion between the driving side housing 8 and the driven side housing 9 is formed at a position separated in the axial direction with respect to the outer periphery of each of the scrolls 5, 7. .. Are provided intermittently in the circumferential direction on one of the housings 8 and 9 having 94, and the notches 52 and 72 are provided on at least one of the scrolls 5 and 7. Therefore, the drive-side housing 8 and the driven-side housing 9 can be coupled by bolt coupling without securing the thickness of the surrounding wall 82 or 94 to a thickness necessary for making a bolt hole, and the scrolls can be combined. 5 and 7 can also be inserted into the surrounding wall 82 or 94 by the bolt mounting portion 83 formed in the drive side housing 8 by the notches 52 and 72 formed in the scrolls 5 and 7, respectively. 95 can be easily inserted without changing the compression volume of the scrolls 5 and 7, and the outer diameters of the housings 8 and 9 that house the co-rotating compression element 3 are required. It is possible to prevent the size of the compressor from becoming larger, and it is possible to reduce the size of the compressor as a whole as compared with the conventional one.
[0011]
According to the second aspect of the present invention, the drive side housing 8 is provided with a surrounding wall 82 that surrounds the outer periphery of the driving scroll 5 and the driven scroll 7, and the bolt mounting portion 83 provided on the surrounding wall 82 is provided outside the driven side housing 9. Since the mounting bolt L to be inserted is tightened, when the compression element 3 is housed in each of the housings 8 and 9, the drive scroll 5 having the long drive shaft 4 and the driven scroll are driven in the drive side housing 8. After the scroll 7 is installed, the driven housing 9 that does not need to support the drive shaft 4 only needs to be bolted with the surrounding wall 82 closed, so that the assembly can be carried out satisfactorily.
[0012]
According to a third aspect of the present invention, the driven housing 9 is provided with a surrounding wall 94 that surrounds the outer periphery of the driving scroll 5 and the driven scroll 7, and the bolt mounting portion 95 provided on the surrounding wall 94 is provided outside the driving side housing 8. Since the mounting bolt L to be inserted is tightened, the compression element 3 is installed in each of the housings 8 and 9, and after the mounting bolt L is tightened and joined, the sealed casing 1 is installed, The mounting bolt L can be formed flat on the back surface of the driven housing 9, that is, on the side opposite to the motor, so that the combined body of the housings 8 and 9 can be formed in the sealed casing 1 using the flat surface as a support surface. Therefore, the assembling property of the combined body to the closed casing 1 can be improved.
[0013]
【Example】
A first embodiment of the present invention will be described with reference to FIG. The first embodiment shown in FIG. 1 is a horizontal co-rotating scroll compressor. This compressor has a motor 2 comprising a rotor 21 and a stator 22 on one side in the longitudinal direction inside a horizontally long sealed casing 1. In addition, a co-rotating scroll compression element 3 is disposed on the other inner side of the casing 1. The compression element 3 is provided with a drive shaft 4 coupled to the rotor 21 of the motor 2, a drive scroll 5 provided integrally therewith, and a driven shaft 6 that is eccentric with respect to the axis of the drive shaft 4. The drive scroll 5 is driven by a driven scroll 7 that rotates while being driven to rotate. The scrolls 5 and 7 are formed in a low-pressure space 10 formed by a drive-side housing 8 and a driven-side housing 9 described below. Decorated. The drive-side housing 8 includes a first bearing portion 81 that supports the drive shaft 4, and the driven-side housing 9 includes a second bearing portion 91 that supports the driven shaft 6.
[0014]
That is, the driving side housing 8 that supports the driving scroll 5 by bearing and the driven side housing 9 that supports the driven scroll 7 by bearing are paired, and the housings 8 and 9 are coupled by the mounting bolts L or the like. Thus, a low pressure space 10 is formed which is partitioned from the internal space of the casing 1, and the drive of the compression element 3 and the driven scrolls 5, 7 are installed in the low pressure space 10 so as to face each other. The shaft 4 is bearing-supported via a first bearing portion 81 provided in the drive-side housing 8, and the driven shaft 6 is rotatably supported by a second bearing portion 91 of the driven-side housing 9. In addition, the front end side protruding outward from the rotor 21 is supported by a support 11 provided in a space on the side opposite to the compression element of the motor 2 in the casing 1 through a bearing 11a. . Further, a discharge passage 15 having one end connected to the discharge port 16 provided in the drive scroll 5 and the other end opened to the anti-compression element side space of the motor 2 at the center of the drive shaft 4. Furthermore, a suction pipe 14 for introducing a low-pressure gas into the low-pressure space 10 is connected to the driven housing 9.
[0015]
Further, the thrust plate 12 is bolted to the drive scroll 5 so as to sandwich the end plate 71 of the driven scroll 7, and the drive scroll 5 is driven into the accommodating space 12 a between the thrust plate 12 and the end plate 71. Accordingly, an Oldham coupling 13 is provided for rotating the driven scroll 7 while being driven to rotate.
[0016]
Therefore, in the above configuration, when the drive scroll 5 is rotationally driven through the drive shaft 4 as the motor 2 rotates, the driven scroll 7 is driven through the Oldham coupling 13 and the thrust plate 12. 5, a low-pressure gas is introduced into the low-pressure space 10 through a suction pipe 14 that penetrates the casing 1 and is connected to the driven-side housing 9. The gas is sucked into the compression chamber between the scrolls 5 and 7 and compressed, and the compressed high-pressure gas is discharged from the discharge port 16 provided in the drive scroll 5 to the discharge passage 15 in the drive shaft 4. Then, it is discharged to the anti-compression element side space of the motor 2 and discharged to the outside from the discharge pipe 17 that opens to the anti-compression element side space.
[0017]
Accordingly, in the first embodiment of FIG. 1, a surrounding wall 82 surrounding the outer periphery of each of the scrolls 5, 7 is formed in the driving side housing 8, and a connecting portion between the driving side housing 8 and the driven side housing 9 is formed. As shown in FIG. 2, the outer wall of each of the scrolls 5, 7 is formed at a position separated in the axial direction from the surrounding wall 82 as shown in FIG. Bolt mounting portions 83 extending inwardly and having a thick radial direction are provided intermittently in the circumferential direction, and the outer periphery of the driving scroll 5 and the driven scroll 7 is provided with the above-mentioned as shown in FIGS. Notches 52 and 72 that can be inserted into the surrounding wall 82 while avoiding the bolt mounting portions 83 are provided, and the bolt mounting portions 83 provided on the surrounding wall 82 are provided outside the driven housing 9. Mounting to be inserted from It was so as to tighten the belt L.
[0018]
Specifically, as shown in FIG. 1, the drive-side housing 8 faces the motor 2 and has an outer diameter that is substantially the same as the inner diameter of the casing 1, and defines the inside of the casing 1. An outer periphery of the driving scroll 5 and the driven scroll 7 extending from the peripheral portion of the forming portion 84, the cylindrical first bearing portion 81 provided in the center of the defining portion 84, and the peripheral portion of the defining portion 84 to the non-motor side The driven-side housing 9 has a disk-shaped closing portion 92 that is substantially the same as the inner diameter of the casing 1 and closes the opening of the surrounding wall 82. The cylindrical second bearing portion 91 provided integrally with the disc-shaped closing portion 92 or fixed integrally by welding or bolting as shown in FIG. Consists of. Further, in FIG. 1, the second bearing portion 91 forms a large-diameter flange portion 91 a for fixing to the disc-shaped closing portion 92, and the driving side housing 8 and the driven side housing 9 are also formed. A connecting portion between the end portion of the surrounding wall 82 and the peripheral edge portion of the disc-shaped closing portion 92 of the driven housing 9 with respect to the outer periphery of the scrolls 5, 7. It is formed as if it is formed at a position separated in the axial direction.
[0019]
In the embodiment shown in FIGS. 1 and 2, bolt mounting portions 83... Projecting inward from the inner diameter of the surrounding wall 82 to increase the thickness in the radial direction are symmetrical with respect to the axis of the drive side housing 8. Two bolt holes 85 are formed in each bolt mounting portion 83. Further, the disc-shaped closing portion 92 in the driven side housing 9 is formed with four through holes 93 through which the mounting bolts L are inserted at positions facing the bolt holes 85.
[0020]
Further, as shown in FIGS. 2 and 3, the outer periphery of the driving scroll 5 and the driven scroll 7 can be inserted into the surrounding wall 82 while avoiding the two bolt mounting portions 83... Two notches 52 and 72, that is, the two notches 52 and 72 along the protruding shape of each bolt mounting portion 83... Are provided. Therefore, when the scrolls 5 and 7 are inserted into the surrounding wall 82, the notches 52 and 72 can be inserted so as to face the bolt mounting portions 83... The driven housing 9 is overlaid on the end of the surrounding wall 82, and the mounting bolt L is inserted into the bolt holes 85 of the bolt mounting portions 83 from the outside of the driven housing 9. The driven housing 9 can be connected even when the drive side housing 8 is fixed to the casing 1 by being inserted and tightened through the through holes 93.
[0021]
The drive-side housing 8 and the driven-side housing 9 form an oil supply passage 18 having one end communicating with the oil reservoir O at the bottom of the casing 1 and the other end opened to the bearing portions 81 and 91. ing. That is, in the embodiment of FIG. 1, the oil supply passage 18 is formed on the lower side of the housings 8 and 9. More specifically, the oil supply passage 18 is formed on the lower side of the drive side housing 8. Cut along the axial direction, one end of which is formed in the first oil supply passage 18a that opens to the oil reservoir O and the drive-side housing 8, one end communicates with the first oil supply passage 18a, and the other end A second oil supply passage 18b opening in the first bearing portion 81 of the drive side housing 8 and the driven housing 9 are formed. One end communicates with the first oil supply passage 18a and the other end connects the driven shaft 6 to the first oil supply passage 18a. The third oil supply passage 18c communicates with the second bearing portion 91 that supports the bearing.
[0022]
The low-pressure space 10 formed by the housings 8 and 9 is held at a low pressure with respect to the oil reservoir O, and therefore, from the oil supply passage 18 that opens to the oil reservoir O, a differential pressure between them. The oil in the oil reservoir O is supplied to the bearing portions 81 and 92 through the first to third oil supply passages 18a to 18c.
[0023]
As described above, the surrounding wall 82 surrounding the outer periphery of each of the scrolls 5, 7 is formed in the drive side housing 8, and the coupling portion between the drive side housing 8 and the driven side housing 9 is used as the scroll 5, 7. A bolt which is formed at a position axially distant from the outer periphery of the housing and protrudes inward from the surrounding wall 82 to the coupling portion of the drive-side housing 8 having the surrounding wall 82 to increase the radial thickness. Attaching portions 83... Are provided intermittently in the circumferential direction, and notches are provided on the outer peripheral portions of the drive scroll 5 and the driven scroll 7 so as to be inserted into the surrounding wall 82 while avoiding the bolt attaching portions 83. 52 and 72 are provided, and the mounting bolts L to be inserted from the outside of the driven housing 9 are tightened into the respective bolt mounting portions 83... necessary The drive-side housing 8 and the driven-side housing 9 can be coupled by bolt coupling while ensuring the minimum thickness necessary for sealing without securing the thickness, and the inside of the surrounding wall 82 of each of the scrolls 5, 7. Since the bolt mounting portion 83 formed in the drive-side housing 8 can be avoided by the notches 52 and 72 formed in the respective scrolls 5 and 7, the insertion into the scrolls 5 and 7 can be easily performed. 7 can prevent the outer diameters of the housings 8 and 9 that house the co-rotating compression element 3 from becoming larger than necessary without changing the compression volume of the compressor 7, and the compressor as a whole can be reduced in size compared to the conventional one. It is.
[0024]
In addition, in the first embodiment, since the surrounding wall 82 is formed in the drive side housing 8, when the compression element 3 is housed in each of the housings 8 and 9, the long drive shaft 4 is provided in the drive side housing 8. After the drive scroll 5 and the driven scroll 7 having the interior are installed, the driven housing 9 that does not need to support the drive shaft 4 only needs to be bolted with the enclosure wall 82 closed, so that assembly is possible. It can be done well.
[0025]
In the first embodiment, the notches 52 and 72 are formed in both the driving scroll 5 and the driven scroll 7. However, as shown by a two-dot broken line in FIG. It may be formed in a circular shape along the notches 52 and 72 so that the entire outer periphery of the end plate of the scroll is notched. In such a case, it is possible to more easily insert the scroll of the small end plate when it is installed inside the surrounding wall 82.
[0026]
Next, a second embodiment will be described with reference to FIGS. In the second embodiment shown in FIG. 4, an encircling wall 94 that surrounds the outer periphery of the driven scroll 5 and the driven scroll 7 is formed in the driven housing 9, and a connecting portion between the driven housing 8 and the driven housing 9 is formed. It is formed at a position away from the outer periphery of each of the scrolls 5 and 7 in the axial direction, and projects radially inwardly from the surrounding wall 94 to the coupling portion of the driven housing 9 having the surrounding wall 94. A bolt mounting portion 95 having an increased thickness is provided intermittently in the circumferential direction, a bolt hole 95a is formed in the bolt mounting portion 95, and a bolt insertion through hole facing the bolt hole 95a is formed in the drive side housing 8. 86 is provided, and notches 52 and 72 are provided on the outer peripheral portions of the drive scroll 5 and the driven scroll 7 so as to be able to be inserted into the surrounding wall 94 while avoiding the bolt mounting portion 95. The bolt mounting portion 95 provided on, by the outside of the drive housing 8 tightening the mounting bolt L to insert through the through-hole 86 is to that to bind.
[0027]
Further, in the second embodiment shown in FIG. 4, as shown in FIG. 5, the three bolt mounting portions 95 are provided, and the bolts are arranged on the outer peripheral portions of the drive scroll 5 and the driven scroll 7 respectively. Three notches 52 and 72 that can be inserted into the surrounding wall 94 while avoiding the mounting portions 95 are provided, that is, the three notches 52 and 72 that follow the protruding shape of each bolt mounting portion 95 are provided. Yes.
[0028]
As described above, also in the second embodiment, unlike the first embodiment, the thickness of the surrounding wall 94 and the driven-side housing 8 are driven without securing the wall thickness required to open the bolt hole. The side housing 9 can be coupled to the side housing 9 by bolts, and the scrolls 5 and 7 are inserted into the surrounding wall 94 by the notches 52.72 formed in the scrolls 5 and 7. Since each of the bolt mounting portions 95 can be easily inserted without being changed, each housing in which the compression element 3 is rotated without changing the compression volume of the scrolls 5 and 7 is provided. It is possible to prevent the outer diameters 8 and 9 from becoming unnecessarily large, and the compressor as a whole can be reduced in size compared to the conventional one.
[0029]
Moreover, in the second embodiment, since the surrounding wall 94 is formed in the driven housing 9, the compression element 3 is housed in each housing 8, 9, and the mounting bolt L is tightened and joined. When it is installed in the hermetic casing 1, the mounting bolt L can be formed flat without protruding on the back side of the driven housing 9, that is, on the side opposite to the motor, and accordingly, each housing 8, 9 can be built in the closed casing 1, and therefore, the assembly of the combined body to the closed casing 1 can be improved.
[0030]
In each of the above-described embodiments, the compressor has a horizontal type, but the present invention can be applied to a vertical type.
[0031]
【The invention's effect】
According to the first aspect of the present invention, in the co-rotating scroll compressor, the surrounding wall 82 or 94 surrounding the outer periphery of each of the scrolls 5, 7 is formed on one of the drive side housing 8 and the driven side housing 9, The drive-side housing having the surrounding wall 82 or 94 in which a connecting portion between the drive-side housing 8 and the driven-side housing 9 is formed at a position axially separated from the outer periphery of the scrolls 5, 7. 8 or the connecting portion of the driven housing 9 is provided with bolt mounting portions 83 or 95... Extending inwardly from the surrounding wall 82 or 94 to increase the radial thickness, and intermittently provided in the circumferential direction. Notches 52 and 72 that can be inserted into the surrounding wall 82 or 94 while avoiding the bolt mounting portions 83 or 95... On the outer peripheral portions of the scroll 5 and the driven scroll 7. Therefore, the drive-side housing 8 and the driven-side housing 9 can be coupled by bolt connection without securing the thickness of the surrounding wall 82 or 94 to a thickness necessary for opening a bolt hole. The scrolls 5 and 7 can be easily inserted into the surrounding wall 82 or 94 by avoiding the bolt mounting portions 83 or 95 formed in the drive-side housing 8 by the notches 52 and 72 formed in the scrolls 5 and 7. Since it can be inserted, it is possible to prevent the outer diameters of the respective housings 8 and 9 that house the co-rotating compression element 3 from becoming unnecessarily large without changing the compression volume of the scrolls 5 and 7. Therefore, the compressor as a whole can be reduced in size compared to the conventional one.
[0032]
Further, according to the second aspect of the present invention, the drive side housing 8 is provided with the surrounding wall 82 that surrounds the outer periphery of the drive scroll 5 and the driven scroll 7, and the bolt mounting portion 83 provided on the surrounding wall 82 is provided with the driven side housing 9. Since the mounting bolt L to be inserted from the outside is tightened, the drive scroll 5 having the long drive shaft 4 in the drive side housing 8 when the compression element 3 is housed in each housing 8, 9. In addition, after the driven scroll 7 is installed, the driven housing 9 that does not need to support the drive shaft 4 only needs to be bolted by closing the surrounding wall 82, so that the assembly can be carried out satisfactorily.
[0033]
According to the third aspect of the present invention, the driven housing 9 is provided with the surrounding wall 94 that surrounds the outer periphery of the driving scroll 5 and the driven scroll 7, and the bolt mounting portion 95 provided on the surrounding wall 94 is provided with the driving side housing 8. Since the mounting bolt L to be inserted from the outside is tightened, the compression element 3 is housed in the housings 8 and 9, the mounting bolt L is tightened and joined, and then the sealed casing 1 is housed. In this case, the mounting bolt L can be formed flat without protruding on the back surface of the driven housing 9, that is, on the non-motor side. The casing 1 can be installed in the interior, and therefore, the assembled property of the combined body to the sealed casing 1 can be improved.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a co-rotating scroll compressor according to a first embodiment of the present invention.
FIG. 2 is an explanatory view showing the time when a driven scroll is inserted in the drive-side housing in the first embodiment.
FIG. 3 is a plan view of a drive scroll according to the first embodiment.
FIG. 4 is a longitudinal sectional view showing a second embodiment of the present invention.
FIG. 5 is an explanatory view showing when a driven scroll is inserted in the driven housing in the second embodiment.
FIG. 6 is a longitudinal sectional view showing a conventional co-rotating scroll compressor.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sealed casing 8 Drive side housing 10 Low pressure space 81 Bearing part (1st)
3 Compression element 82 Enclosure 4 Drive shaft 83 Bolt mounting portion 5 Drive scroll 9 Driven housing 52 Notch 91 Bearing portion (second)
6 Driven shaft 94 Enclosure 7 Driven scroll 95 Bolt mounting part 72 Notch L Mounting bolt

Claims (3)

駆動軸(4)の軸受部(81)をもつ駆動側ハウジング(8)と、従動軸(6)の軸受部(91)をもつ従動側ハウジング(9)とを備え、これら各ハウジング(8)(9)をボルト結合して、密閉ケーシング(1)の内部空間と区画された低圧空間(10)を形成し、この空間(10)に駆動スクロール(5)と従動スクロール(7)とから成る圧縮要素(3)を内装した共回りスクロール圧縮機において、前記駆動側ハウジング(8)と従動側ハウジング(9)との一方に前記各スクロール(5)(7)の外周を取囲む囲壁(82または94)を形成し、前記駆動側ハウジング(8)と従動側ハウジング(9)との結合部を、前記各スクロール(5)(7)の外周に対し、軸方向に離れた位置に形成して、前記囲壁(82または94)をもった前記駆動側ハウジング(8)または従動側ハウジング(9)の前記結合部に、前記囲壁(82または94)より内方に張り出して径方向厚さを厚くしたボルト取付部(83または95)‥‥を周方向に断続して設けると共に、前記駆動スクロール(5)及び従動スクロール(7)の少なくとも一方の外周部に、前記ボルト取付部(83または95)‥‥を回避して前記囲壁(82または94)内に挿入可能とする切欠(52)(72)を設けたことを特徴とする共回りスクロール圧縮機。A drive side housing (8) having a bearing portion (81) of the drive shaft (4) and a driven side housing (9) having a bearing portion (91) of the driven shaft (6), each of these housings (8) (9) is bolted to form a low pressure space (10) partitioned from the internal space of the hermetic casing (1), and this space (10) is composed of a driving scroll (5) and a driven scroll (7). In the co-rotating scroll compressor equipped with a compression element (3), one of the drive side housing (8) and the driven side housing (9) surrounds the outer periphery of each scroll (5) (7) (82). Or 94), and the connecting portion between the drive side housing (8) and the driven side housing (9) is formed at a position axially separated from the outer periphery of each scroll (5) (7). The enclosure (82 or 94) A bolt mounting portion (83 or 95) that protrudes inward from the surrounding wall (82 or 94) and has a thicker radial thickness at the coupling portion of the driving housing (8) or the driven housing (9). Are provided intermittently in the circumferential direction, and at least one of the outer periphery of the drive scroll (5) and the driven scroll (7) avoids the bolt mounting portion (83 or 95). 82 or 94) provided with a notch (52) (72) that can be inserted into the co-rotating scroll compressor. 駆動側ハウジング(8)に駆動スクロール(5)及び従動スクロール(7)の外周を取囲む囲壁(82)を設け、この囲壁(82)に設けるボルト取付部(83)に、従動側ハウジング(9)の外側から挿入する取付ボルト(L)を締め込むようにしている請求項1記載の共回りスクロール圧縮機。A surrounding wall (82) surrounding the outer periphery of the driving scroll (5) and the driven scroll (7) is provided in the driving side housing (8), and the driven side housing (9 The co-rotating scroll compressor according to claim 1, wherein a mounting bolt (L) to be inserted from the outside is tightened. 従動側ハウジング(9)に駆動スクロール(5)及び従動スクロール(7)の外周を取り囲む囲壁(94)を設け、この囲壁(94)に設けるボルト取付部(95)に、駆動側ハウジング(8)の外側から挿入する取付ボルト(L)を締め込むようにしている請求項1記載の共回りスクロール圧縮機。The driven housing (9) is provided with a surrounding wall (94) surrounding the outer periphery of the driving scroll (5) and the driven scroll (7), and the bolt mounting portion (95) provided on the surrounding wall (94) is provided with the driving side housing (8). The co-rotating scroll compressor according to claim 1, wherein a mounting bolt (L) to be inserted from the outside is tightened.
JP04853094A 1994-03-18 1994-03-18 Co-rotating scroll compressor Expired - Fee Related JP3780006B2 (en)

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Application Number Priority Date Filing Date Title
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JPH07259760A JPH07259760A (en) 1995-10-09
JP3780006B2 true JP3780006B2 (en) 2006-05-31

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KR102280122B1 (en) 2017-03-06 2021-07-21 엘지전자 주식회사 Scroll compressor
KR102526939B1 (en) * 2019-01-21 2023-05-02 한온시스템 주식회사 Scroll compressor
KR102680628B1 (en) * 2020-01-31 2024-07-03 한온시스템 주식회사 Scroll compressor, cutting tool and scroll manufacturing method
US12104594B2 (en) 2021-11-05 2024-10-01 Copeland Lp Co-rotating compressor

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