JP3624110B2

JP3624110B2 - Horizontal oil separation and recovery unit for oil-cooled compressor

Info

Publication number: JP3624110B2
Application number: JP03314399A
Authority: JP
Inventors: 真富澤
Original assignee: Kobe Steel Ltd
Current assignee: Kobe Steel Ltd
Priority date: 1999-02-10
Filing date: 1999-02-10
Publication date: 2005-03-02
Anticipated expiration: 2019-02-10
Also published as: JP2000234826A

Description

【０００１】
【発明の属する技術分野】
本発明は、冷却油を伴った圧縮ガスから冷却油を分離して圧縮機本体内のガス圧縮空間に導くようにした油冷式圧縮機の横置き型油分離回収器に関する。
【０００２】
【従来の技術】
従来の油分離回収器を用いた油冷式圧縮機の要部構成の配管系統図が図８に示される。この圧縮機周辺の構成は、吸込流路１６と、これに接続した圧縮機本体２２と、圧縮機本体２２の吐出側に延びるとともに、油分離回収器２１を介在させた吐出流路１７ａ，１７ｂと、油分離回収器２１の下部から油冷却器２５を経て圧縮機本体２２内のガス圧縮空間、軸受・軸封部等の油注入部に至る油供給流路１８とからなっている。油分離回収器２１は、圧縮機本体２２から油を伴って吐出された圧縮ガスが流れ込む流入口２３と、上部に油と分離された圧縮ガスが油分離エレメント２４を介して出て行くガス流出口２６と、下部に分離された油を溜める油溜まり部２７およびこの油溜まり部２７の油を流出させる油流出口２８とを備えている。
【０００３】
このような圧縮機周辺の配管系統においては、吸込流路１６から圧縮機本体２２に吸込まれたガスは、油供給流路１８から油注入を受けつつ圧縮され、油を伴った状態で吐出流路１７ａに吐出される。さらにこの吐出された圧縮ガスは油とともに流入口２３より油分離回収器２１に導かれ、油分離エレメント２４で油と圧縮ガスが分離され、クリーンな圧縮ガスはガス流出口２６から吐出流路１７ｂに送り出される。一方、油はいったん油溜まり部２７に溜められ、油流出口２８より油供給流路１８に出て行く。そして、この油は油冷却器２５にて冷却されて、上述した油注入部に送られた後、圧縮機本体２２の吐出口に導かれ、以後、上記同様の循環を繰り返す。
【０００４】
【発明が解決しようとする課題】
図８における従来の油分離回収器２１は、器体の水平断面における何れの方向の長さをとっても垂直方向の高さよりも短尺となっている縦長形状の所謂、縦置き型構造であって、これはミスト状の油が混在している圧縮ガスに対し器体内での圧縮ガスと油との質量差を利用した分離能を効率良く行わせるためとして、高さ方向に十分な長さを持つ空間が必要であるからに他ならないが、このような縦長形状の油分離回収器２１では圧縮機本体２２と一体化しようとした場合、水平断面積が小さいため上下に段積みさせることは困難であるから横に相接近させた状態で並べる据付け方法がとられ、そのため設置スペースを広くとって油冷式圧縮機全体のコンパクト化には対応できないという不都合な面があった。
【０００５】
このような問題点に鑑みて、縦置き型油分離回収器に代えて、段積みのための十分な取付けスペースを有する横置き型の油分離回収器を採用することは容易に考えられることであって、例えば、図３及び図４に示されるものに類似した構造の油冷式圧縮機が当然想到されることである。即ち、横置き型の油分離回収器の頂面部を圧縮機本体等の据付けスペースとして利用することにより設置面積を広くとらなくてコンパクトな構造とすることが可能である。
【０００６】
しかしながら、横長形状の油分離回収器では、横置きとしたために器体内における油面が低くなり、その結果、底部に設けられる油出口部の流速が速くなると、油面が近いことから、直上部の油面の油を直接引き込む現象が生じて、そのためにガスが混入し易くなって油分離効率が低下する。すると、本来、油のみを供給したい油注入部にガスの混入した油が送られることになり、その結果、圧縮機本体のガス圧縮空間にあっては油冷却効果が減殺され、また、軸受・軸封部にあっては潤滑或いはシール効果が劣るなどの不具合が生じることになる。
【０００７】
一方、縦長形状、横長形状を問わず器体内での油分離効率を向上させるためとして、器体内に板部材を設けてなる油分離回収器が特開平５−２０３２９３号公報、特開平６−２３５５７１号公報等により公知の先行技術として挙げられる。前者の先行技術は、気液混合の流体を油分離回収器に導入後、衝突板と称される板部材に衝突させて気液分離を促進させようとするものであり、そのためには、油面が到達するレベルよりも上方でかつ縦方向に板部材を配設する必要があって、横長形状の器体の場合、油出口部と油面が近いことによる上記問題点が依然として解消されなく、また、後者の先行技術は、気液混合の流体を油分離回収器に導入後、デミスタで先ず気液分離し、次いで衝突板と称される板部材に衝突させて更に気液分離させるものであって、この例も横長形状の器体に適用した場合、油面が到達するレベルよりも上方でかつ縦方向に板部材を配設する必要があって、やはり前者と同様の問題が生じる。
【０００８】
本発明は、このような従来技術が有する問題点の解消を図るために成されたものであり、したがって本発明の目的は、油冷式圧縮機ユニットの構造のコンパクト化を図るとともに、器内での油中への気体（ガス）流入を確実に防止し、圧縮ガスからの油の分離を確実かつ高効率下に行わせ得る横置き型油分離回収器を提供することにある。
【０００９】
【課題を解決するための手段】
本発明は、上記の目的を達成するため以下に述べる如き構成としたものである。即ち、本発明における請求項１の発明は、水平断面での少なくとも一方向の長さが垂直方向の高さよりも長尺である横長形状の容器からなる油分離回収器本体の上部に圧縮機本体から油を伴って吐出された圧縮ガスが流れ込む流入口および油と分離された圧縮ガスが出て行くガス流出口が備えられ、下部に圧縮ガスから分離された油を溜める油溜まり部およびこの油溜まり部の油を流出させる油流出口が備えられてなる横置き型油分離回収器であって、上記油溜まり部の油面よりも下方に、貯留油に浸漬させかつ油分離回収器本体の横長手方向の全長に亘らせて、少なくとも上記油流出口の上方を覆わせて、油分離回収器本体のケーシング内壁面と板部材の長手側一辺との間に間隙が保持されるように上記板部材が配設されてなることを特徴とする油冷式圧縮機の横置き型油分離回収器である。
【００１０】
また、本発明における請求項２の発明は、上記請求項１の発明に係る油冷式圧縮機の横置き型油分離回収器において、上記流入口と上記油流出口との少なくとも何れか一方が、上記油分離回収器本体のケーシングと上記板部材との間に存する間隙に対し水平方向の相互位置関係をずらした個所に設けられる構成としたことを特徴とする。
【００１１】
また、本発明における請求項３の発明は、上記請求項１又は上記請求項２の発明に係る油冷式圧縮機の横置き型油分離回収器において、圧縮機本体が上記油分離回収器本体の上部に搭載されてなる構成としたことを特徴とする。
【００１２】
また、本発明における請求項４の発明は、上記請求項１、２又は３の発明に係る油冷式圧縮機の横置き型油分離回収器において、上記流入口の上記油分離回収器本体の内部側に、油を伴った圧縮ガスを上記油溜まり部に向かわせない方向に流入させるエルボー部が備えられてなる構成としたことを特徴とする。
【００１３】
また、本発明における請求項５の発明は、上記請求項１、２、３又は４の発明に係る油冷式圧縮機の横置き型油分離回収器において、油分離エレメントが上記油分離回収器本体とは別体の独立的に構成されて該油分離回収器本体の上部に搭載されてなる構成としたことを特徴とする。
【００１４】
【発明の実施の形態】
以下、本発明の好ましい実施形態を、添付図面を参照しながら具体的に説明する。
【００１５】
図１には、本発明の第１の実施形態に係る油分離回収器を用いた油冷式圧縮機の要部構成が配管系統図として示され、また、図２には、図１における油分離回収器が（イ）に断面示正面図で表され、（ロ）に断面示側面図で表される。図１における油冷式圧縮機の要部構成は、図８に示すものとは油分離回収器本体１、油分離エレメント３、油フィルタ４からなる油分離回収器を除いて他の構成が実質的に同一であり、相互に対応する部材については、同一の参照符号を付してここでは説明を省略する。
【００１６】
図１、２に示される油分離回収器における油分離回収器本体１は、水平断面での少なくとも一方向（例えば左右の器幅方向）の長さが垂直方向の高さよりも長尺に形成されてなる横長形状の圧力容器からなっていて、その上部の例えばケーシング上面部には、圧縮機本体２から油を伴って吐出された圧縮ガスが流れ込む流入口５および油と分離された圧縮ガスが出て行くガス流出口６がそれぞれ備えられ、下部の例えばケーシング側面最下方部には、圧縮ガスから分離された油を流出させる油流出口８が備えられるとともに、容器内の下部が圧縮ガスから分離された油を溜める油溜まり部７に形成されており、この油分離回収器本体１は、機械室床面等に水平に設置して分離エレメント３及び油フィルタ４と組み合わせることによって、横置き型油分離回収器として圧縮機本体２に付設される。
【００１７】
上記油分離回収器本体１は、器内における油溜まり部７の油面（Ｏ．Ｌ）よりも下方位置に、平板から形成された板部材９が水平の横置きに配設されている。この板部材９は、油溜まり部７に貯溜する油に浸漬させるようにして、油流出口８の上方を覆わせることができる水平面積を必要最小範囲として所定個所に設けるものであって、この所定個所及び必要最小範囲は、周りの緩やかな速度で流動する油層とは明らかな差を有する速い流速で油流出口８に吸い込まれる油の流動層に対して、これを該層の途中において水平方向に横断することができる個所及び範囲（面積）に対応するものであり、油流出口８との離隔距離にもよるが、例えば該油流出口８の直上方位置において油流出口８の開口面積の数倍の水平面積を持つ平板を横設することによって所期の目的が達成されるものである。なお、図示の実施形態における板部材９は、油分離回収器本体１の横長手方向の全長に亘らせて、三辺支持の棚板状に横設させていて、油分離回収器本体１のケーシング内壁面と板部材９の長手側一辺との間に適当な寸法の間隙１１が保持されるように設けられている。
【００１８】
油分離回収器本体１内に配設されてなる上記板部材９は、油溜まり部７に貯溜される油層中にあって、油流出口８とその近くの直上部の油面（Ｏ．Ｌ）との間に邪魔板状に介在される配置形態をとっていることから、油流出口８に相当の流速で吸い込まれる油の流れにより直近の油面（Ｏ．Ｌ）で油が直接吸い込まれようとするのを防ぐ役割をなすことは明らかであり、したがって油流出口８に吸い込まれる油の中に油分離回収器本体１中の気体（ガス）の一部量が混入するのを防止することが可能である。また、この板部材９は、ケーシング内壁面と板部材９の長手側一辺との間に適当な寸法の間隙１１が保持されるように設けていることから、油流出口８に向けて流れる油に対して堰となってその流速を速めるように作用することがなく、さらに、油流出口８から離れた場所での油の滞留を起こさせるようなこともない。
【００１９】
第１の実施形態に係る上記油分離回収器にあっては、図２（ロ）を参照して明らかなように、上記間隙１１と、流入口５および油流出口８とが、相互の水平方向の位置関係をずらした個所にそれぞれ設けられていて、間隙１１を流入口５および油流出口８に対して接近させないようにできるだけ相互に離れた位置にそれぞれ形成させている。このように間隙１１を設けてなることによって、油を伴って流入口５から流れ込んだ圧縮ガスの流れが間隙１１の部分に直接的に作用することがなくなり、また、間隙１１の部分を流れる油が油流出口８に対して直接的な影響を与えることがなくなり、その結果、油流出口８に吸い込まれる油の流れがスムーズになって、該油中への気体（ガス）流入をより一層確実に防止することができる。
【００２０】
なお、本発明においては、流入口５および油流出口８が何れも間隙１１に対して水平方向に位置がずれている構成である必要はなく、流入口５と油流出口８との少なくとも何れか一方が水平方向の相互位置関係をずらした個所に設けられていればよくて、これによって、油流出口８に吸い込まれる油中への気体流入は効果的に防止されるものである。
【００２１】
また、第１の実施形態に係る上記油分離回収器では、油分離エレメント３が油分離回収器本体１とは別体の独立的に形成して、例えば該本体１のケーシング上部に前記ガス流出口６に直結して搭載されているが、油分離エレメント３を油分離回収器本体１内に収設するようにした構成とすることも勿論可能であって、このような変型も当然本発明の範囲に包含されるものである。
【００２２】
図３には、本発明の第２の実施形態に係る油分離回収器を用いた油冷式圧縮機の外観が正面図で示され、図４には、図３に対応する平面図が、また、図５には、図３に対応する左側面図が（イ）に、同じく右側面図が（ロ）にそれぞれ示される。図３乃至図５に示される本発明の第２の実施形態に係る油冷式圧縮機は、圧縮機本体２と横置き型油分離回収器とが段積みによる一体形に構成されてなる点に特徴が存している。
【００２３】
上記油冷式圧縮機は、圧縮機本体２が油分離回収器本体１の上部に搭載されるとともに、前記流入口５がこの油分離回収器本体１のケーシング上部に圧縮機本体２の吸入口（図示せず）の直下に位置して設けられてこの吸入口に直結されており、さらに、油分離エレメント３及び油フィルタ４が何れも別体の独立構造に形成されて、油分離回収器本体１のケーシング上部に圧縮機本体２の側方に並べて搭載されている。
【００２４】
上記油分離エレメント３は、油分離回収器本体１のケーシング上部に設けられたガス流出口６に直結させて油分離回収器本体１上に搭載され、一方、油フィルタ４は、上記油流出口８からＬ字状に上方に延びる配管等からなる油通路１２に接続して同じく搭載されている。
【００２５】
このように段積みの一体構造になる油冷式圧縮機は、油分離回収器本体１を設置するに略足りる水平面積があれば良いので設置スペースが狭小で済み、さらに段積み構造によって上下方向の空間が有効に利用されるため、コンパクト化をより一層推進することができる。
【００２６】
図６には、本発明の第３の実施形態に係る油分離回収器を用いた油冷式圧縮機の外観が正面図で示され、図７には、図６に対応する右側面図が示される。両図に示される第３の実施形態に係る油冷式圧縮機は、エルボー部１０が流入口５に備えられる点を除いて他の構成が第２の実施形態に係る上記油冷式圧縮機と実質的に同一であり、したがって相互に対応する部材については、同一の参照符号を付してここでは重複を避けて説明を省略する。
【００２７】
図６及び図７に示される上記油冷式圧縮機に係る油分離回収器は、前述するように流入口５にエルボー部１０が備えられる。すなわち、油分離回収器本体１のケーシング上部に設けられる流入口５に該本体１内側に臨ませて、略直角に急峻に湾曲して形成される曲げ管からなるエルボー部１０が取付けられていて、圧縮機本体２から吐出されて油分離回収器本体１内に流れ込む油分を含む圧縮ガスを油溜まり部７に直接向かわせない方向、すなわちこの油溜まり部７の油面（Ｏ．Ｌ）に直接吹き当たることがないようになっている。
【００２８】
このようにエルボー部１０が備えられることによって、上記油面（Ｏ．Ｌ）が圧縮ガスの衝突に伴って波立つようになるのを未然に防ぐことが可能であり、したがって、油流出口８から流出する油中に気体（ガス）が混入する恐れがなくなり、油だけを油注入部に供給することが可能である。
【００２９】
なお、上記した第１から第３の実施形態において、いずれも流入口５は油分離回収器本体１の器内の最も上方の、ケーシング上部に設置したものを記したが、本発明はこれに限られるものではなく、上下方向の位置については、上記流入口５は油分離回収器本体１内の油面より上方であれば足りる。
例えば、上記流入口５は、上記した第１から第３の実施形態に記載されたものより側方にずれた位置、即ち図２の（ロ）に示したＡの位置や、横長形状の油分離回収器本体１の短尺側で且つ上方の位置、即ち図２の（イ）に示したＢの位置に設置されていてもよい。
油流出口８についても、上記した第１から第３の実施形態に記された位置のものに限られるものではなく、上下方向の位置については、上記流出口８は油分離回収器本体１内の油面より下方、さらには板部材９より下方であれば足りる。よって、例えば、横長形状の油分離回収器本体１の短尺側で且つ下方の位置、即ち図２の（イ）に示したＣの位置に設置されていてもよい。
【００３０】
【発明の効果】
以上説明した内容により明らかなように、請求項１の発明によれば、横長形状の容器からなる油分離回収器本体の上部に圧縮機本体から油を伴って吐出された圧縮ガスが流れ込む流入口および油と分離された圧縮ガスが出て行くガス流出口が備えられ、下部に圧縮ガスから分離された油を溜める油溜まり部およびこの油溜まり部の油を流出させる油流出口が備えられてなる横置き型油分離回収器であって、上記油溜まり部の油面よりも下方に、貯留油に浸漬させかつ油分離回収器本体の横長手方向の全長に亘らせて、少なくとも上記油流出口の上方を覆わせて、油分離回収器本体のケーシング内壁面と板部材の長手側一辺との間に間隙が保持されるように上記板部材が配設されてなるものである。このため、横置き型油分離回収器に形成したことにより、油分離回収器本体のケーシング上部を圧縮機本体などの所要機器の据付け部に利用できることから油冷式圧縮機のコンパクト化への対応を可能とし得る。また、上記板部材を配設したことで、油流出口と油面との距離を実質的に拡大するとともに、油面の波立ちを防いで油得湧出口への器体の混入を防ぐことが可能である。
【００３１】
また、請求項２の発明によれば、流入口と油流出口との少なくとも何れか一方が、油分離回収器本体のケーシングと板部材との間に存する間隙に対し水平方向の相互位置関係をずらした個所に設けられる。
このため、流入口又は／及び油流出口と間隙との実質的な距離を広げ、かつ、間隙部での油の流れが油流出口に直接的な影響を与えないようにすることができて、油流出口での油中への気体流入をより一層確実に防ぐことができるという効果が奏される。
【００３２】
また、請求項３の発明によれば、圧縮機本体が上記油分離回収器本体の上部に搭載される。さらに、請求項５の発明によれば、油分離エレメントが上記油分離回収器本体とは別体の独立的に構成されて該油分離回収器本体の上部に搭載される。
このため、油冷式圧縮機のコンパクト化が実現される。
【００３３】
また、請求項４の発明によれば、流入口に油を伴った圧縮ガスを油分離回収器本体の内部の油溜まり部に向かわせない方向に流入させるエルボー部が備えられる。このため、油分離回収器本体に流入する圧縮ガスが油溜まり部の油面に直接当たることがなくなって、油流出口での油中への気体流入をより一層確実に防いで確実かつ円滑な潤滑・冷却作用を実現するという効果を奏する。
【図面の簡単な説明】
【図１】本発明の第１の実施形態に係る油分離回収器を用いた油冷式圧縮機の要部構成を示す配管系統図である。
【図２】（イ）は図１に示す油分離回収器の断面示正面図、（ロ）は同じく断面示側面図である。
【図３】本発明の第２の実施形態に係る油分離回収器を用いた油冷式圧縮機の外観を示す正面図である。
【図４】図３に対応する平面図である。
【図５】（イ）は図３に対応する左側面図、（ロ）は同じく右側面図である。
【図６】本発明の第３の実施形態に係る油分離回収器を用いた油冷式圧縮機の外観を示す正面図である。
【図７】図６に対応する右側面図である。
【図８】従来の油分離回収器を用いた油冷式圧縮機の要部構成を示す配管系統図である。
【符号の説明】
１…油分離回収器本体２…圧縮機本体３…油分離エレメント
４…油フィルタ５…流入口６…ガス流出口
７…油溜まり部８…油流出口９…板部材
１０…エルボー部１１…間隙１２…油通路[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a horizontal oil separation and recovery unit for an oil-cooled compressor that separates cooling oil from compressed gas accompanied by cooling oil and guides it to a gas compression space in a compressor body.
[0002]
[Prior art]
FIG. 8 shows a piping system diagram of a main part configuration of an oil-cooled compressor using a conventional oil separator / collector. The configuration around the compressor is composed of a suction flow path 16, a compressor main body 22 connected to the suction flow path 16, and discharge paths 17 a and 17 b that extend to the discharge side of the compressor main body 22 and interpose an oil separator / collector 21. And an oil supply passage 18 that extends from the lower part of the oil separator / collector 21 through the oil cooler 25 to the gas compression space in the compressor body 22 and the oil injection part such as the bearing / shaft seal part. The oil separator / recovery unit 21 has an inlet 23 through which compressed gas discharged from the compressor body 22 with oil flows, and a gas flow through which compressed gas separated from oil exits through an oil separation element 24. An outlet 26, an oil reservoir 27 for storing the oil separated in the lower portion, and an oil outlet 28 for allowing the oil in the oil reservoir 27 to flow out are provided.
[0003]
In such a piping system around the compressor, the gas sucked into the compressor main body 22 from the suction passage 16 is compressed while receiving oil injection from the oil supply passage 18 and is discharged in a state accompanied by oil. It is discharged to the passage 17a. Further, the discharged compressed gas is guided to the oil separator / collector 21 together with the oil from the inlet 23, and the oil and the compressed gas are separated by the oil separation element 24, and the clean compressed gas is discharged from the gas outlet 26 to the discharge passage 17b. Sent out. On the other hand, the oil is once stored in the oil reservoir 27 and goes out to the oil supply passage 18 from the oil outlet 28. Then, this oil is cooled by the oil cooler 25 and sent to the oil injection section described above, and then guided to the discharge port of the compressor body 22 and thereafter repeats the same circulation as described above.
[0004]
[Problems to be solved by the invention]
The conventional oil separator / recovery unit 21 in FIG. 8 is a so-called vertical installation structure having a vertically long shape that is shorter than the height in the vertical direction regardless of the length in any direction in the horizontal cross section of the container body. This has sufficient length in the height direction to efficiently perform separation using the mass difference between the compressed gas and oil in the container for compressed gas containing mist-like oil. This is because the space is necessary, but in such a vertically long oil separator / collector 21, when trying to integrate with the compressor body 22, it is difficult to stack up and down because the horizontal cross-sectional area is small. For this reason, there is an inconvenience that an installation method in which the two are arranged side by side is used, and therefore the installation space is wide and the entire oil-cooled compressor cannot be made compact.
[0005]
In view of such problems, it is easy to think of adopting a horizontal oil separation and recovery device having sufficient installation space for stacking instead of a vertical oil separation and recovery device. Thus, for example, an oil-cooled compressor having a structure similar to that shown in FIGS. 3 and 4 is naturally conceivable. That is, by using the top surface portion of the horizontal oil separation and recovery device as an installation space for the compressor main body or the like, a compact structure can be achieved without taking a large installation area.
[0006]
However, in the horizontally long oil separator / collector, the oil level in the container is lowered because it is placed horizontally, and as a result, if the flow speed of the oil outlet provided at the bottom increases, the oil level is close, so This causes a phenomenon of directly drawing the oil on the oil surface, which makes it easy for gas to be mixed in and lowers the oil separation efficiency. Then, the oil mixed with the gas is sent to the oil injection section where it is desired to supply only the oil. As a result, the oil cooling effect is reduced in the gas compression space of the compressor body, and the bearing / In the shaft seal portion, problems such as lubrication or inferior sealing effect occur.
[0007]
On the other hand, in order to improve the oil separation efficiency in the vessel regardless of the vertically long shape or the horizontally long shape, an oil separation and recovery device in which a plate member is provided in the vessel is disclosed in JP-A-5-203293 and JP-A-6-235571. Is known as a known prior art. The former prior art, after the introduction of the fluid of the gas-liquid mixture into the oil separator collector, which collide with called plate member and the collision plate to try to accelerate the gas-liquid separation, in order that the oil It is necessary to dispose a plate member in the vertical direction above the level at which the surface reaches, and in the case of a horizontally long container, the above problem due to the oil outlet part being close to the oil surface is still not solved In the latter prior art, after the gas-liquid mixed fluid is introduced into the oil separator / collector , the gas-liquid separation is first performed by the demister, and then the gas-liquid is further separated by colliding with a plate member called a collision plate. However, when this example is also applied to a horizontally long container, it is necessary to dispose a plate member above the level at which the oil level reaches and in the vertical direction, and the same problem as the former arises. .
[0008]
The present invention has been made in order to solve such problems of the prior art. Accordingly, the object of the present invention is to reduce the structure of the oil-cooled compressor unit, It is an object of the present invention to provide a horizontal type oil separation and recovery device that can reliably prevent gas (gas) from flowing into oil and can separate oil from compressed gas reliably and with high efficiency.
[0009]
[Means for Solving the Problems]
The present invention has the following configuration in order to achieve the above object. That is, the invention of claim 1 in the present invention is such that the compressor main body is disposed above the oil separator / collector main body comprising a horizontally long container whose length in at least one direction in the horizontal section is longer than the height in the vertical direction. And an oil reservoir for storing the oil separated from the compressed gas at the bottom, and an inlet for the compressed gas discharged along with the oil to flow in and a gas outlet from which the compressed gas separated from the oil exits. A horizontal oil separator / collector provided with an oil outlet for allowing oil in the reservoir to flow out, immersed in the stored oil below the oil level of the oil reservoir and of the oil separator / collector body A gap is maintained between the inner wall surface of the casing of the oil separator / collector body and one side of the longitudinal side of the plate member by covering at least the upper part of the oil outlet and covering the entire length in the horizontal longitudinal direction. wherein said plate member is disposed A horizontal type oil separator collector of the oil-cooled compressor.
[0010]
According to a second aspect of the present invention, in the horizontal oil separation and recovery device for an oil-cooled compressor according to the first aspect of the present invention, at least one of the inlet and the oil outlet is at least one of the inlet and the oil outlet. Further, the present invention is characterized in that it is provided at a location where the mutual positional relationship in the horizontal direction is shifted with respect to the gap existing between the casing of the oil separator / collector body and the plate member.
[0011]
According to a third aspect of the present invention, there is provided a horizontal oil separation / recovery unit for an oil-cooled compressor according to the first or second aspect of the invention, wherein the compressor body is the oil separation / recovery body. It is characterized in that it is configured to be mounted on the top of.
[0012]
According to a fourth aspect of the present invention, there is provided a horizontal oil separation / recovery unit for an oil-cooled compressor according to the first, second, or third aspect of the invention, wherein the oil separation / recovery unit main body at the inlet is provided. An elbow part is provided on the inner side to allow compressed gas with oil to flow in a direction not to face the oil reservoir part.
[0013]
According to a fifth aspect of the present invention, there is provided a horizontal oil separation / recovery unit for an oil-cooled compressor according to the first, second, third or fourth aspect of the present invention, wherein the oil separation element is the oil separation / recovery unit. It is characterized in that it is configured separately from the main body and mounted on the upper part of the oil separator / collector main body.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0015]
FIG. 1 shows a main configuration of an oil-cooled compressor using an oil separator / recovery unit according to the first embodiment of the present invention as a piping system diagram, and FIG. 2 shows the oil in FIG. The separator / collector is shown in (a) in a sectional front view, and (b) in a sectional side view. The main structure of the oil-cooled compressor in FIG. 1 is substantially the same as that shown in FIG. 8 except for the oil separator / collector including the oil separator / collector body 1, the oil separation element 3, and the oil filter 4. The members that are the same and correspond to each other are assigned the same reference numerals, and the description thereof is omitted here.
[0016]
The oil separator / collector body 1 in the oil separator / collector shown in FIGS. 1 and 2 is formed such that the length in at least one direction (for example, the left and right vessel width directions) in the horizontal section is longer than the height in the vertical direction. In the upper part of the casing, for example, on the upper surface of the casing, there is an inlet 5 into which compressed gas discharged with oil flows from the compressor body 2 and compressed gas separated from the oil. Each outlet gas outlet 6 is provided, and the lower part of the casing side surface, for example, is provided with an oil outlet 8 for allowing the oil separated from the compressed gas to flow out. It is formed in an oil reservoir 7 for storing the separated oil, and this oil separator / collector body 1 is installed horizontally on the floor surface of the machine room and combined with the separation element 3 and the oil filter 4 so as to be placed horizontally. It is attached to the compressor body 2 as type oil separating and collecting device.
[0017]
In the oil separator / collector body 1, a plate member 9 formed of a flat plate is disposed horizontally in a position below the oil level (OL) of the oil reservoir 7 in the container. The plate member 9 is provided at a predetermined location with a horizontal area that can cover the upper part of the oil outlet 8 as a necessary minimum range so as to be immersed in the oil stored in the oil reservoir 7. The predetermined location and the minimum required range are in the middle of the fluidized bed of oil sucked into the oil outlet 8 at a high flow rate having an obvious difference from the surrounding fluidized bed. It corresponds to the location and range (area) that can be traversed in the direction, and depends on the separation distance from the oil outlet 8, for example, at the position directly above the oil outlet 8, the opening of the oil outlet 8 The intended purpose is achieved by laying a flat plate having a horizontal area several times the area. In addition, the plate member 9 in the illustrated embodiment extends horizontally in the form of a three-side supported shelf over the entire length of the oil separator / collector body 1 in the transverse longitudinal direction. A gap 11 having an appropriate size is provided between the inner wall surface of the casing and the longitudinal side of the plate member 9.
[0018]
The plate member 9 disposed in the oil separator / collector body 1 is in the oil layer stored in the oil reservoir 7 and has an oil surface (OL) in the oil outlet 8 and the immediate upper part thereof. The oil is directly sucked at the nearest oil level (OL) by the flow of oil sucked into the oil outlet 8 at a considerable flow velocity. It is clear that it plays a role of preventing this, and therefore, a part of the gas (gas) in the oil separator / collector body 1 is prevented from being mixed into the oil sucked into the oil outlet 8. Is possible. Further, since the plate member 9 is provided so that a gap 11 having an appropriate dimension is held between the inner wall surface of the casing and the longitudinal side of the plate member 9, the oil flowing toward the oil outlet 8 is provided. Therefore, the oil does not act as a weir to increase the flow velocity, and further, oil does not stay in a place away from the oil outlet 8.
[0019]
In the oil separator / collector according to the first embodiment, as apparent with reference to FIG. 2 (b), the gap 11, the inlet 5 and the oil outlet 8 are mutually horizontal. The gaps 11 are respectively formed at positions separated from each other as much as possible so as not to approach the inlet 5 and the oil outlet 8. By providing the gap 11 as described above, the flow of the compressed gas flowing from the inlet 5 with the oil does not directly act on the portion of the gap 11, and the oil flowing in the portion of the gap 11 Does not directly affect the oil outlet 8, and as a result, the flow of oil sucked into the oil outlet 8 becomes smoother, and gas (gas) inflow into the oil is further increased. It can be surely prevented.
[0020]
In the present invention, it is not necessary that the inlet 5 and the oil outlet 8 are displaced in the horizontal direction with respect to the gap 11, and at least either the inlet 5 or the oil outlet 8 is not required. It is sufficient that one of them is provided at a position where the mutual positional relationship in the horizontal direction is shifted, and thereby, gas inflow into the oil sucked into the oil outlet 8 is effectively prevented.
[0021]
Further, in the oil separation and recovery device according to the first embodiment, the oil separation element 3 is formed independently of the oil separation and recovery device main body 1 and is formed, for example, on the casing upper portion of the main body 1. Although it is mounted directly connected to the outlet 6, it is of course possible to adopt a configuration in which the oil separation element 3 is accommodated in the oil separator / collector body 1. It is included in the range.
[0022]
In FIG. 3, the external appearance of the oil-cooled compressor using the oil separation and recovery device according to the second embodiment of the present invention is shown in a front view, and FIG. 4 is a plan view corresponding to FIG. In FIG. 5, a left side view corresponding to FIG. 3 is shown in (a), and a right side view is shown in (b). The oil-cooled compressor according to the second embodiment of the present invention shown in FIGS. 3 to 5 is configured such that the compressor body 2 and the horizontal oil separator / recoverer are integrally formed by stacking. Features exist.
[0023]
In the oil-cooled compressor, the compressor body 2 is mounted on the upper part of the oil separator / collector body 1, and the inlet 5 is provided at the upper part of the casing of the oil separator / collector body 1. The oil separation element 3 and the oil filter 4 are both formed as separate and independent structures, and are provided directly below (not shown) and directly connected to the suction port. The main body 1 is mounted on the casing upper side by side on the side of the compressor main body 2.
[0024]
The oil separation element 3 is mounted on the oil separator / collector body 1 by being directly connected to a gas outlet 6 provided in the upper part of the casing of the oil separator / collector body 1, while the oil filter 4 is connected to the oil outlet / outlet 1. It is also mounted by connecting to an oil passage 12 composed of a pipe or the like extending upwardly in an L shape from 8.
[0025]
In this way, the oil-cooled compressor that has an integrated structure of stacking needs only a horizontal area that is substantially sufficient to install the oil separator / collector body 1, so that the installation space can be small, and the stacking structure can be used in the vertical direction. This space can be used effectively, so that compactness can be further promoted.
[0026]
FIG. 6 is a front view of the appearance of an oil-cooled compressor using an oil separation and recovery device according to the third embodiment of the present invention, and FIG. 7 is a right side view corresponding to FIG. Indicated. The oil-cooled compressor according to the third embodiment shown in both drawings is the same as the oil-cooled compressor according to the second embodiment except that the elbow portion 10 is provided in the inflow port 5. Therefore, members corresponding to each other are denoted by the same reference numerals, and description thereof is omitted here to avoid duplication.
[0027]
6 and 7, the oil separator / collector according to the oil-cooled compressor is provided with the elbow portion 10 at the inlet 5 as described above. In other words, the inflow port 5 provided to case Sing top of the oil separating and collecting body 1 so as to face to the body 1 inside, elbow 10 is attached consisting of bent tube formed by bending substantially at a right angle abruptly The compressed gas containing the oil discharged from the compressor body 2 and flowing into the oil separator / collector body 1 is not directed directly to the oil reservoir 7, that is, the oil level (OL) of the oil reservoir 7 ) Directly.
[0028]
By providing the elbow portion 10 in this way, it is possible to prevent the oil surface (OL) from undulating due to the collision of the compressed gas, and therefore the oil outlet 8 There is no risk of gas (gas) mixing into the oil flowing out of the oil, and only oil can be supplied to the oil injection section.
[0029]
In each of the first to third embodiments described above, the inflow port 5 is described as being installed at the uppermost part of the casing of the oil separation / recovery unit main body 1, but the present invention is not limited thereto. The position in the vertical direction is not limited, and the inflow port 5 only needs to be above the oil level in the oil separator / collector body 1.
For example, the inflow port 5 has a position shifted laterally from that described in the first to third embodiments, that is, the position A shown in FIG. It may be installed on the short side of the separator / collector main body 1 and in an upper position, that is, a position B shown in FIG.
The oil outlet 8 is not limited to the position described in the first to third embodiments, and the outlet 8 is located in the oil separator / collector body 1 in the vertical direction. It suffices if it is below the oil level, and below the plate member 9. Therefore, for example, it may be installed on the short side of the horizontally long oil separator / collector body 1 and on the lower side, that is, the position C shown in FIG.
[0030]
【The invention's effect】
As apparent from the above description, according to the invention of claim 1, the inlet into which the compressed gas discharged with oil from the compressor body flows into the upper part of the oil separator / collector body composed of a horizontally long container. And a gas outlet through which the compressed gas separated from the oil exits, and an oil reservoir for storing the oil separated from the compressed gas and an oil outlet for discharging the oil in the oil reservoir at the bottom. A horizontal oil separation / recovery device, wherein the oil is immersed in the stored oil below the oil level of the oil reservoir , and at least the oil in the horizontal longitudinal direction of the oil separation / recovery device body. The plate member is disposed so as to cover the upper part of the outlet and to maintain a gap between the inner wall surface of the casing of the oil separator / collector body and the one side of the plate member on the longitudinal side . For this reason, by forming it in a horizontal oil separation and recovery unit, the upper part of the casing of the oil separation and recovery unit can be used as an installation part for the required equipment such as the compressor body. Can be possible. In addition, the arrangement of the plate member substantially increases the distance between the oil outlet and the oil surface, and prevents the oil surface from undulating and preventing the mixing of the vessel into the oil obtaining spring outlet. Is possible.
[0031]
According to the invention of claim 2, at least one of the inlet and the oil outlet has a horizontal mutual positional relationship with respect to the gap existing between the casing and the plate member of the oil separator / collector body. It is provided at a shifted location.
For this reason, the substantial distance between the inlet or / and the oil outlet and the gap can be increased, and the oil flow in the gap can not directly affect the oil outlet. There is an effect that the gas inflow into the oil at the oil outlet can be more reliably prevented.
[0032]
According to the invention of claim 3, the compressor main body is mounted on the upper part of the oil separator / collector main body. According to a fifth aspect of the present invention, the oil separation element is configured separately from the oil separation / recovery unit main body and mounted on the oil separation / recovery unit main body.
For this reason, the oil-cooled compressor can be made compact.
[0033]
According to the invention of claim 4, the elbow part is provided for allowing the compressed gas accompanied by the oil to flow into the inflow port in a direction not to be directed to the oil reservoir inside the oil separator / collector body. For this reason, the compressed gas flowing into the oil separator / collector body does not directly hit the oil surface of the oil reservoir, and the gas inflow into the oil at the oil outlet is further prevented more reliably and smoothly. It has the effect of realizing lubrication and cooling action.
[Brief description of the drawings]
FIG. 1 is a piping system diagram showing the main configuration of an oil-cooled compressor using an oil separation and recovery device according to a first embodiment of the present invention.
2A is a cross-sectional front view of the oil separation and recovery device shown in FIG. 1, and FIG. 2B is a cross-sectional side view of the same.
FIG. 3 is a front view showing an appearance of an oil-cooled compressor using an oil separator / recovery device according to a second embodiment of the present invention.
4 is a plan view corresponding to FIG. 3. FIG.
5A is a left side view corresponding to FIG. 3, and FIG. 5B is a right side view of the same.
FIG. 6 is a front view showing the appearance of an oil-cooled compressor using an oil separator / recovery device according to a third embodiment of the present invention.
7 is a right side view corresponding to FIG. 6. FIG.
FIG. 8 is a piping system diagram showing a main configuration of an oil-cooled compressor using a conventional oil separation and recovery device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Oil separator collection body 2 ... Compressor body 3 ... Oil separation element 4 ... Oil filter 5 ... Inlet 6 ... Gas outlet 7 ... Oil reservoir 8 ... Oil outlet 9 ... Plate member 10 ... Elbow part 11 ... Gap 12 ... Oil passage

Claims

The compressed gas discharged with oil flows from the compressor body into the upper part of the oil separator / collector body composed of a horizontally long container whose length in at least one direction in the horizontal section is longer than the height in the vertical direction. An inlet and a gas outlet through which compressed gas separated from the oil exits are provided, and an oil reservoir for storing the oil separated from the compressed gas and an oil outlet for discharging the oil in the oil reservoir are provided at the bottom. A horizontal oil separator / collector that is immersed in the stored oil below the oil level of the oil reservoir and extends over the entire length of the oil separator / collector body in the transverse longitudinal direction. The plate member is disposed so as to cover the upper part of the oil outlet and to maintain a gap between the inner wall surface of the casing of the oil separator / collector body and one side of the plate member on the long side. Horizontal oil separation and recovery of oil-cooled compressor .

At least one of the inflow port and the oil outflow port is provided at a position where the mutual positional relationship in the horizontal direction is shifted with respect to a gap existing between the casing of the oil separator / collector body and the plate member. Item 2. A horizontal oil separation and recovery device for an oil-cooled compressor according to Item 1.

The horizontal oil separation / recovery unit for an oil-cooled compressor according to claim 1, wherein a compressor main body is mounted on an upper portion of the oil separation / recovery body.

The oil according to claim 1, 2 or 3, wherein an elbow part is provided on the inner side of the oil separator / collector main body of the inflow port to allow compressed gas accompanied by oil to flow in a direction not to face the oil reservoir part. Horizontal type oil separator / collector for cold compressor.

The oil-cooled compression according to claim 1, 2, 3 or 4, wherein the oil separation element is configured separately from the oil separator / collector body and is mounted on the upper part of the oil separator / collector body. Horizontal oil separation and recovery machine for the machine.