JP3789825B2 - Balance weight of rotor for motor, method for adjusting weight thereof, and rotary compressor - Google Patents

Balance weight of rotor for motor, method for adjusting weight thereof, and rotary compressor Download PDF

Info

Publication number
JP3789825B2
JP3789825B2 JP2002023405A JP2002023405A JP3789825B2 JP 3789825 B2 JP3789825 B2 JP 3789825B2 JP 2002023405 A JP2002023405 A JP 2002023405A JP 2002023405 A JP2002023405 A JP 2002023405A JP 3789825 B2 JP3789825 B2 JP 3789825B2
Authority
JP
Japan
Prior art keywords
rotor
weight
balance weight
attached
electric motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP2002023405A
Other languages
Japanese (ja)
Other versions
JP2003230260A (en
Inventor
剛 樋口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP2002023405A priority Critical patent/JP3789825B2/en
Publication of JP2003230260A publication Critical patent/JP2003230260A/en
Application granted granted Critical
Publication of JP3789825B2 publication Critical patent/JP3789825B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • F04C18/3562—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
    • F04C18/3564—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/70—Microphotolithographic exposure; Apparatus therefor
    • G03F7/70483—Information management; Active and passive control; Testing; Wafer monitoring, e.g. pattern monitoring
    • G03F7/70491—Information management, e.g. software; Active and passive control, e.g. details of controlling exposure processes or exposure tool monitoring processes
    • G03F7/705—Modelling or simulating from physical phenomena up to complete wafer processes or whole workflow in wafer productions
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/70—Microphotolithographic exposure; Apparatus therefor
    • G03F7/70483—Information management; Active and passive control; Testing; Wafer monitoring, e.g. pattern monitoring
    • G03F7/70491—Information management, e.g. software; Active and passive control, e.g. details of controlling exposure processes or exposure tool monitoring processes
    • G03F7/70525—Controlling normal operating mode, e.g. matching different apparatus, remote control or prediction of failure
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/70—Microphotolithographic exposure; Apparatus therefor
    • G03F7/708—Construction of apparatus, e.g. environment aspects, hygiene aspects or materials
    • G03F7/70991—Connection with other apparatus, e.g. multiple exposure stations, particular arrangement of exposure apparatus and pre-exposure and/or post-exposure apparatus; Shared apparatus, e.g. having shared radiation source, shared mask or workpiece stage, shared base-plate; Utilities, e.g. cable, pipe or wireless arrangements for data, power, fluids or vacuum

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Environmental & Geological Engineering (AREA)
  • Epidemiology (AREA)
  • Public Health (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Manufacture Of Motors, Generators (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、電動機の回転子端面に取り付けられるバランスウエイト及びその重量調整方法、並びに、ロータリコンプレッサに関するものである。
【０００２】
【従来の技術】
従来よりロータリコンプレッサにおいては、密閉容器内に電動機と回転圧縮要素を設け、電動機の回転軸によって回転圧縮要素を駆動する構成とされている。そして、この回転圧縮要素のシリンダ内には回転軸に設けた偏心部に嵌合されたローラとベーンが設けられており、回転軸が回転することによって偏心部とローラがシリンダ内で偏心回転し、冷媒ガスを圧縮する。一方、偏心部を有する回転軸のバランスを調整するため、通常電動機の回転子にはバランスウエイトが設けられる。
【０００３】
図４に従来のバランスウエイトを示す。図４のバランスウエイトは、所定厚みの金属板体をプレスにて打ち抜き加工することにより、回転軸を挿入するための中央の回転軸孔１２０と、当該バランスウエイトを回転子の積層体（鉄心）に固定するために用いるリベットを通すための４つの貫通孔１２２と、回転軸孔１２０を中心として略半円形状に形成されたウエイト部１２４とから成る。
【０００４】
このウエイト部１２４は、側面が回転子の周面に沿った円弧形状を呈している。そして、回転圧縮要素とのバランス調整のために重量を軽くする際には、従来では図５に示すように、ウエイト部１２４の内部を適宜打ち抜いて打ち抜き孔１２６（ハッチング部分）を形成することにより重量調整を行っていた。
【０００５】
【発明が解決しようとする課題】
しかしながら、このようにバランスウエトのウエイト部１２４の内部に打ち抜き孔１２６を設けることにより重量調整を行うと、バランスウエイトを回転子の積層体に取り付け、更にオイル分離板などが取り付けられた場合、打ち抜き孔１２６が外部から隠蔽されてしまう。そのため、例えば打ち抜き孔１２６を形成しないバランスウエイトを使用する回転子を用いる機種のロータリコンプレッサの製造工程に、打ち抜き孔１２６を形成したバランスウエイトが取り付けられた回転子が混入しても、それを外部から判断することができず、誤ったバランスウエイトを取り付けた回転子を組み付けてしまい、運転中の振動や騒音を発生させてしまうと云う問題が生じていた。
【０００６】
本発明は係る従来技術の課題を解決するために成されたものであり、電動機の回転子に取り付けられた状態で異機種混入を回避できるバランスウエイト及びその重量調整方法及びロータリコンプレッサを提供することを目的とする。
【０００７】
【課題を解決するための手段】
即ち、請求項１のバランスウエイトは、電動機の回転軸を挿入するための中央の回転軸孔と、この回転軸孔を中心として略半円形状を呈するウエイト部を備えており、回転子に取り付けられた状態で当該回転子の周面側となるウエイト部の側面に、重量調整用の切欠を形成したので、通常は他の部品が取り付けられない回転子の周面側にバランスウエイトの重量調整用の切欠が位置することになる。
【０００８】
これにより、バランスウエイトを回転子に取り付けた状態で、当該バランスウエイトの切欠を外部から確認することができるようになり、異機種混入による不都合の発生を容易に回避することができるようになるものである。特に、中央の回転軸孔を中心として略半円形状を呈するウエイト部の側面に切欠を形成するので、慣性力を大きくとれる利点もある。
【０００９】
請求項２の発明の電動機用回転子のバランスウエイトの重量調整方法は、回転子に取り付けられた状態で当該回転子の周面側となるウエイト部の側面を切り欠くことにより重量を調整するので、回転子にバランスウエイトを取り付けた状態で、当該バランスウエイトの重量調整用の切欠は、通常は他の部品が取り付けられない回転子の周面側に位置することになる。
【００１０】
これにより、同様にバランスウエイトを回転子に取り付けた状態で、当該バランスウエイトの切欠を外部から確認することができるようになり、異機種混入による不都合の発生を容易に回避することができるようになるものである。特に、中央の回転軸孔を中心として略半円形状を呈するウエイト部を有するバランスウエイトの当該ウエイト部の側面に切欠を形成するので、慣性力を大きくとれる利点もある。
【００１１】
請求項３の発明のロータリコンプレッサは、密閉容器内に電動機と、該電動機にて駆動される回転圧縮要素を備えており、回転圧縮要素を構成するためのシリンダ及び電動機の回転軸に形成された偏心部に嵌合されてシリンダ内で偏心回転するローラと、電動機の回転子端面に取り付けられたバランスウエイトと、このバランスウエイトに重合して取り付けられるオイル分離板とを備え、バランスウエイトは、回転軸を挿入するための中央の回転軸孔と、この回転軸孔を中心として略半円形状を呈するウエイト部を有し、回転子に取り付けられた状態で当該回転子の周面側となる前記ウエイト部の側面に、重量調整用の切欠が形成されているので、通常は他の部品が取り付けられない回転子の周面側にバランスウエイトの重量調整用の切欠が位置することになる。
【００１２】
これにより、バランスウエイトが回転子に取り付けられ、オイル分離板に隠れてしまっ た状態でも、当該バランスウエイトの切欠を外部から確認することができるようになり、当該ロータリコンプレッサ用とは異なるバランスウエイトが取り付けられた回転子が組み付けられることによって生じるロータリコンプレッサの振動や騒音の発生を未然に回避し、信頼性の向上を図ることができるようになるものである。特に、中央の回転軸孔を中心として略半円形状を呈するウエイト部の側面に切欠を形成するので、慣性力を大きくとれる利点もある。
【００１３】
【発明の実施の形態】
次に、図面に基づき本発明の実施形態を詳述する。図１は本発明を適用した実施例として、第１及び第２の回転圧縮要素３２、３４を備えた内部中間圧型多段（２段）圧縮式ロータリコンプレッサ１０の縦断面図である。
【００１４】
この図において、１０は二酸化炭素（ＣＯ2）を冷媒として使用する内部中間圧型多段圧縮式ロータリコンプレッサで、この多段圧縮式ロータリコンプレッサ１０は、鋼板からなる円筒状の密閉容器１２と、この密閉容器１２の内部空間の上側に配置収納された電動機１４及びこの電動機１４の下側に配置され、電動機１４の回転軸１６により駆動される第１の回転圧縮要素３２（１段目）及び第２の回転圧縮要素３４（２段目）からなる回転圧縮機構部１８にて構成されている。
【００１５】
密閉容器１２は底部をオイル溜めとし、電動機１４と回転圧縮機構部１８を収納する容器本体１２Ａと、この容器本体１２Ａの上部開口を閉塞する略椀状のエンドキャップ（蓋体）１２Ｂとで構成され、且つ、このエンドキャップ１２Ｂの上面中心には円形の取付孔１２Ｄが形成されており、この取付孔１２Ｄには電動機１４に電力を供給するためのターミナル（配線を省略）２０が溶接固定されている。
【００１６】
電動機１４は、密閉容器１２の上部空間の内周面に沿って環状に取り付けられた固定子２２と、この固定子２２の内側に若干の間隔を設けて挿入配置された回転子２４とからなる。この回転子２４は中心を通り鉛直方向に延びる回転軸１６に固定されている。
【００１７】
固定子２２は、ドーナッツ状の電磁鋼板を積層した積層体２６と、この積層体２６の歯部に直巻き（集中巻き）方式により巻装された固定子コイル２８を有している。
【００１８】
また、回転子２４も固定子２２と同様に電磁鋼板を積層してカシメ固定した積層体３０から形成されている。そして、この積層体３０内に永久磁石ＭＧを挿入した後、この積層体３０の上下端面を非磁性体の端面部材１０８で覆い、この端面部材１０８の積層体３０とは接していない面には後述するバランスウエイト１００を取り付け（上側２枚、下側３枚）、更に、積層体３０の上側に位置するバランスウエイト１００の上側にオイル分離板１０２を重合して取り付けている（図２）。
【００１９】
そして、これらの回転子２４、バランスウエイト１００・・及びオイル分離板１０２を貫通するリベット１０４にてそれらを一体に結合して構成されている。
【００２０】
他方、前記第１の回転圧縮要素３２と第２の回転圧縮要素３４との間には中間仕切板３６が挟持されている。即ち、回転圧縮機構部１８の第１の回転圧縮要素３２と第２の回転圧縮要素３４は、中間仕切板３６と、この中間仕切板３６の上下に配置されたシリンダ３８、４０と、この上下シリンダ３８、４０内を１８０度の位相差を有して回転軸１６に設けた上下偏心部４２、４４に嵌合されて偏心回転する上下ローラ４６、４８と、この上下ローラ４６、４８に当接して上下シリンダ３８、４０内をそれぞれ低圧室側と高圧室側に区画する図示しない上下ベーンと、上シリンダ３８の上側の開口面及び下シリンダ４０の下側の開口面を閉塞して回転軸１６の軸受けを兼用する支持部材としての上部支持部材５４及び下部支持部材５６にて構成される。
【００２１】
尚、前述するバランスウエイト１００は、回転軸１６に設けられた回転圧縮機構部１８の上下偏心部４２、４４の重量バランスをとるために回転子に取り付けられるものである。
【００２２】
このバランスウエイト１００は、所定厚みの金属板体をプレスにって打ち抜き加工することにより、回転軸１６を挿入するための中央の回転軸孔１２０と、バランスウエイト１００を回転子２４の積層体３０に固定するために用いる前記リベット１０４を通すための４つの貫通孔１２２と、回転軸孔１２０を中心として略半円形状を呈するウエイト部１２４から成る。そして、バランスウエイト１００の重量調整（例えば軽くする）を行う場合には、当該バランスウエイト１００のウエイト部１２４の、回転子２４（積層体３０）の周面側となる側面に切欠１１０、１１０を形成することで行う（図３）。
【００２３】
このように、バランスウエイト１００は回転子２４の周面側となる側面を切り欠くことにより重量が調整されているので、その上側にオイル分離板１０２が重合して取り付けられた状態でも、回転子２４の周面側からバランスウエイト１００の切欠１１０を確認することができるようになる。このため、どの機種のロータリコンプレッサに取り付けられる回転子２４であるかを、バランスウエイト１００のウエイト部１２４側面に形成した切欠１１０により区別することができるようになり、誤ったバランスウエイトの回転子をロータリコンプレッサに組み付けてしまう不都合を未然に回避することができるようになる。
【００２４】
一方、上部支持部材５４及び下部支持部材５６内には、吸込ポート１６１、１６２にて上下シリンダ３８、４０の内部とそれぞれ連通する吸込通路５８、６０と、一部を凹陥させ、この凹陥部を上カバー６６、下カバー６８にて閉塞することにより形成された吐出消音室６２、６４とが設けられている。
【００２５】
尚、吐出消音室６４と密閉容器１２内とは、上下シリンダ３８、４０や中間仕切板３６を貫通する図示しない連通路にて連通されており、連通路の上端には中間吐出管１２１が立設され、この中間吐出管１２１から第１の回転圧縮要素３２で圧縮された中間圧の冷媒が密閉容器１２内に吐出される。
【００２６】
また、上シリンダ３８の下側の開口面及び下シリンダ４０の上側の開口面を閉塞する中間仕切板３６内には、上シリンダ３８内の吸込側に対応する位置に、外周面と内周面を連通して給油路を構成する貫通孔１３１が穿設されており、この貫通孔１３１の外周面側の封止材１３２を圧入して外周面側の開口を封止している。また、この貫通孔１３１の中途部には上側に延在する連通孔１３３が穿設されている。
【００２７】
上シリンダ３８の吸込ポート１６１（吸込側）には中間仕切板３６の連通孔１３３に連通する連通孔１３４が穿設されている。また、回転軸１６内には軸中心に延直方向の図示しないオイル孔と、このオイル孔に連通する横方向の給油孔８２、８４（上下偏心部４２、４４にも形成されている）が形成されており、中間仕切板３６の貫通孔１３１の内周面側の開口は、これらの給油孔８２、８４を介して図示しないオイル孔に連通している。
【００２８】
ここで、冷媒としては地球環境にやさしく、可燃性及び毒性等を考慮して自然冷媒である前記二酸化炭素（ＣＯ2）を使用し、潤滑油としてのオイルは、例えば鉱物油（ミネラルオイル）、アルキルベンゼン油、エーテル油、エステル油、ＰＡＧ（ポリアルキルグリコール）等既存のオイルが使用される。
【００２９】
密閉容器１２の容器本体１２Ａの側面には、上部支持部材５４と下部支持部材５６の吸込通路５８、６０、吐出消音室６２、上部カバー６６の上側（電動機１４の下端に略対応する位置）に対応する位置に、スリーブ１４１、１４２、１４３及び１４４がそれぞれ溶接固定されている。スリーブ１４１と１４２は上下に隣接すると共に、スリーブ１４３はスリーブ１４１の略対角線上にある。また、スリーブ１４４はスリーブ１４１と略９０度ずれた位置にある。
【００３０】
そして、スリーブ１４１内には上シリンダ３８に冷媒ガスを導入するための冷媒通路としての冷媒導入管９２の一端が挿入接続され、この冷媒導入管９２の一端は上シリンダ３８の吸込通路５８と連通する。この冷媒導入管９２は密閉容器１２の上側を通過してスリーブ１４４に至り、他端はスリーブ１４４内に挿入接続されて密閉容器１２内に連通する。
【００３１】
また、スリーブ１４２内には下シリンダ４０に冷媒ガスを導入するための冷媒導入管９４の一端が挿入接続され、この冷媒導入管９４の一端は下シリンダ４０の吸込通路６０と連通する。また、スリーブ１４３内には冷媒吐出管９６が挿入接続され、この冷媒導入管９６の一端は吐出消音室６２と連通する。
【００３２】
以上の構成で次にロータリコンプレッサ１０の動作を説明する。ターミナル２０及び図示しない配線を介して電動機１４の固定子コイル２８に通電されると、電動機１４が起動して回転子２４が回転する。この回転により回転軸１６と一体に設けられた偏心部４２、４４に嵌合された上下ローラ４６、４８がシリンダ３８、４０内で偏心回転する。このとき、回転軸１６に設けられた偏心部４２、４４と回転子２４のバランスウエイト１００とで重量バランスがとられているので、振動や騒音の発生は最小限に抑えられる。
【００３３】
これにより、冷媒導入管９４及び下部支持部材５６に形成された吸込通路６０を経由して吸込ポート１６２から下シリンダ４０の低圧室側に吸入された低圧の冷媒は、ローラ４８とベーンの動作により圧縮されて中間圧となり、下シリンダ４０の高圧室側より図示しない吐出ポート、下部支持部材５６に形成された吐出消音室６４から図示しない連通路を経て中間吐出管１２１から密閉容器１２内に吐出される。これによって、密閉容器１２内は中間圧となる。
【００３４】
そして、密閉容器１２内の中間圧の冷媒ガスは、スリーブ１４４から出て冷媒導入管９２及び上部支持部材５４に形成された吸込通路５８を経由して吸込ポート１６１から上シリンダ３８の低圧室側に吸入される。吸入された中間圧の冷媒ガスは、ローラ４６とベーンの動作により２段目の圧縮が行われて高温高圧の冷媒ガスとなり、高圧室側から図示しない吐出ポートを通り上部支持部材５４に形成された吐出消音室６２、冷媒吐出管９６を経由して外部に設けられた放熱器に流入する。
【００３５】
このように本発明では、回転子２４に取り付けるバランスウエイト１００において、回転子２４に取り付けられた状態でこの回転子２４の周面側となるバランスウエイト１００の側面に、重量調整用の切欠１１０を形成しているので、通常は他の部品が取り付けられない回転子２４の周面側にバランスウエイト１００の重量調整用の切欠１１０が位置することになる。
【００３６】
これにより、バランスウエイト１００を回転子２４に取り付けた状態で、当該バランスウエイト１００の切欠１１０を外部から確認することができるようになり、当該ロータリコンプレッサ１０用とは異なるバランスウエイトが取り付けられた回転子が組み付けられることによって生じるロータリコンプレッサの振動や騒音の発生を未然に回避し、信頼性の向上を図ることができるようになる。
【００３７】
尚、実施例では縦置型の多段圧縮式ロータリコンプレッサ１０について説明したが、これに限らず、回転軸を横方向とした横置型のロータリコンプレッサにも適応できることは云うまでもない。更に、ロータリコンプレッサを第１及び第２の回転圧縮要素を備えた２段圧縮式ロータリコンプレッサで説明したが、これに限らず、単一の回転圧縮要素を有するロータリコンプレッサや、回転圧縮要素を三つ以上備えた多段圧縮式ロータリコンプレッサに適応しても本発明は有効である。また、請求項１及び請求項２の発明はロータリコンプレッサ用の電動機に限定されるものではない。
【００３８】
【発明の効果】
以上詳述した如く請求項１のバランスウエイトによれば、電動機の回転軸を挿入するための中央の回転軸孔と、この回転軸孔を中心として略半円形状を呈するウエイト部を備えており、回転子に取り付けられた状態で当該回転子の周面側となるウエイト部の側面に、重量調整用の切欠を形成したので、通常は他の部品が取り付けられない回転子の周面側にバランスウエイトの重量調整用の切欠が位置することになる。
【００３９】
これにより、バランスウエイトを回転子に取り付けた状態で、当該バランスウエイトの切欠を外部から確認することができるようになり、異機種混入による不都合の発生を容易に回避することができるようになるものである。特に、中央の回転軸孔を中心として略半円形状を呈するウエイト部の側面に切欠を形成するので、慣性力を大きくとれる利点もある。
【００４０】
請求項２の発明の電動機用回転子のバランスウエイトの重量調整方法によれば、回転子に取り付けられた状態で当該回転子の周面側となるウエイト部の側面を切り欠くことにより重量を調整するので、回転子にバランスウエイトを取り付けた状態で、当該バランスウエイトの重量調整用の切欠は、通常は他の部品が取り付けられない回転子の周面側に位置することになる。
【００４１】
これにより、同様にバランスウエイトを回転子に取り付けた状態で、当該バランスウエイトの切欠を外部から確認することができるようになり、異機種混入による不都合の発生を容易に回避することができるようになるものである。特に、中央の回転軸孔を中心として略半円形状を呈するウエイト部を有するバランスウエイトの当該ウエイト部の側面に切欠を形成するので、慣性力を大きくとれる利点もある。
【００４２】
請求項３の発明のロータリコンプレッサによれば、密閉容器内に電動機と、この電動機にて駆動される回転圧縮要素を備えており、回転圧縮要素を構成するためのシリンダ及び電動機の回転軸に形成された偏心部に嵌合されてシリンダ内で偏心回転するローラと、電動機の回転子端面に取り付けられたバランスウエイトと、このバランスウエイトに重合して取り付けられるオイル分離板とを備え、バランスウエイトは、回転軸を挿入するための中央の回転軸孔と、この回転軸孔を中心として略半円形状を呈するウエイト部を有し、回転子に取り付けられた状態で当該回転子の周面側となる前記ウエイト部の側面に、重量調整用の切欠が形成されているので、通常は他の部品が取り付けられない回転子の周面側にバランスウエイトの重量調整用の切欠が位置することになる。
【００４３】
これにより、バランスウエイトが回転子に取り付けられ、オイル分離板に隠れてしまった状態でも、当該バランスウエイトの切欠を外部から確認することができるようになり、当該ロータリコンプレッサ用とは異なるバランスウエイトが取り付けられた回転子が組み付けられることによって生じるロータリコンプレッサの振動や騒音の発生を未然に回避し、信頼性の向上を図ることができるようになるものである。特に、中央の回転軸孔を中心として略半円形状を呈するウエイト部の側面に切欠を形成するので、慣性力を大きくとれる利点もある。
【図面の簡単な説明】
【図１】 本発明を適用した実施例の内部中間圧型多段圧縮式ロータリコンプレッサの縦断面図である。
【図２】 本発明を適用した実施例の電動機の回転子の縦断面図である。
【図３】 本発明のバランスウエイトの正面図である。
【図４】 従来のバランスウエイトの正面図である。
【図５】 同じく従来のバランスウエイトの正面図である。
【符号の説明】
１０ 内部中間圧型多段圧縮式ロータリコンプレッサ
１２ 密閉容器
１４ 電動機
１６ 回転軸
２２ 固定子
２４ 回転子
３０ 積層体
４２、４４ 偏心部
１００ バランスウエイト
１０２ オイル分離板
１０４ リベット
１０８ 端面部材
１１０ 切欠
１２０ 回転軸孔
１２２ 貫通孔
１２４ ウエイト部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a balance weight attached to a rotor end face of an electric motor, a weight adjustment method thereof, and a rotary compressor.
[0002]
[Prior art]
Conventionally, in a rotary compressor, an electric motor and a rotary compression element are provided in an airtight container, and the rotary compression element is driven by a rotary shaft of the electric motor. In the cylinder of the rotary compression element, a roller and a vane fitted to an eccentric part provided on the rotary shaft are provided, and the eccentric part and the roller rotate eccentrically in the cylinder by rotating the rotary shaft. Compress the refrigerant gas. On the other hand, in order to adjust the balance of the rotating shaft having the eccentric portion, a balance weight is usually provided on the rotor of the electric motor.
[0003]
FIG. 4 shows a conventional balance weight. The balance weight shown in FIG. 4 is formed by punching a metal plate having a predetermined thickness with a press, so that a central rotary shaft hole 120 for inserting a rotary shaft and the balance weight is a laminated body of irons (iron core). 4 through-holes 122 for passing rivets used for fixing, and a weight part 124 formed in a substantially semicircular shape around the rotation shaft hole 120.
[0004]
The weight portion 124 has an arc shape whose side surface is along the circumferential surface of the rotor. When the weight is reduced for balance adjustment with the rotary compression element, conventionally, as shown in FIG. 5, the inside of the weight portion 124 is appropriately punched to form a punching hole 126 (hatched portion). The weight was adjusted.
[0005]
[Problems to be solved by the invention]
However, when weight adjustment is performed by providing the punching hole 126 inside the weight portion 124 of the balance weight in this way, the balance weight is attached to the rotor stack, and when an oil separator or the like is attached, the punching is performed. The hole 126 is concealed from the outside. Therefore, for example, even if a rotor with a balance weight formed with a punch hole 126 is mixed in the manufacturing process of a rotary compressor of a model that uses a rotor that uses a balance weight that does not form the punch hole 126, the rotor is attached to the outside. Therefore, there is a problem in that a rotor with an incorrect balance weight is assembled and vibration and noise during operation are generated.
[0006]
The present invention has been made to solve the problems of the related art, and provides a balance weight, a weight adjusting method thereof, and a rotary compressor capable of avoiding mixing of different models while being attached to a rotor of an electric motor. With the goal.
[0007]
[Means for Solving the Problems]
That is, the balance weight according to claim 1 includes a central rotation shaft hole for inserting the rotation shaft of the electric motor, and a weight portion having a substantially semicircular shape around the rotation shaft hole, and is attached to the rotor. Since the weight adjustment notch is formed on the side of the weight part, which is the peripheral surface side of the rotor in this state, the weight of the balance weight is normally adjusted on the peripheral surface side of the rotor to which no other parts can be attached. The notch for the position will be located.
[0008]
As a result, with the balance weight attached to the rotor, it becomes possible to check the notch of the balance weight from the outside, and it is possible to easily avoid the occurrence of inconvenience due to mixing of different models. It is. In particular, since the notch is formed in the side surface of the weight portion having a substantially semicircular shape with the central rotation shaft hole as the center, there is an advantage that the inertia force can be increased.
[0009]
The weight adjustment method for the balance weight of the rotor for an electric motor according to the second aspect of the present invention adjusts the weight by notching the side surface of the weight portion which is the peripheral surface side of the rotor in a state of being attached to the rotor. In a state where the balance weight is attached to the rotor, the weight adjustment notch for the balance weight is normally positioned on the peripheral surface side of the rotor to which no other part is attached.
[0010]
As a result, with the balance weight attached to the rotor, the notch of the balance weight can be confirmed from the outside, and the occurrence of inconvenience due to mixing of different models can be easily avoided. It will be. In particular, since the notch is formed in the side surface of the balance portion having a weight portion having a substantially semicircular shape with the central rotation shaft hole as a center, there is an advantage that the inertia force can be increased.
[0011]
The rotary compressor of the invention of claim 3 includes an electric motor and a rotary compression element driven by the electric motor in a sealed container, and is formed on a cylinder for constituting the rotary compression element and a rotary shaft of the electric motor. A roller that is fitted to the eccentric part and rotates eccentrically in the cylinder, a balance weight attached to the rotor end face of the electric motor, and an oil separation plate that is superposed on the balance weight , and the balance weight rotates. and the center pivot hole for inserting the shaft, has a weight portion having a substantially semicircular shape around the rotation shaft hole, the peripheral surface of the rotor in a state of being attached to the rotor the the side surface of the weight portion, the notch for adjusting weight is formed, usually notches for adjusting weight of the balance weight on the peripheral surface of the rotor other components is not attached It will be location.
[0012]
Thus, the balance weight is attached to the rotor, even when had hidden oil separation plate, it becomes possible to confirm the notches of the balance weight from the outside, are different balance weights and for the rotary compressor Thus, it is possible to avoid the occurrence of vibration and noise of the rotary compressor caused by assembling the attached rotor and to improve the reliability. In particular, since the notch is formed in the side surface of the weight portion having a substantially semicircular shape with the central rotation shaft hole as the center, there is an advantage that the inertia force can be increased.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a longitudinal sectional view of an internal intermediate pressure type multi-stage (two-stage) compression rotary compressor 10 having first and second rotary compression elements 32 and 34 as an embodiment to which the present invention is applied.
[0014]
In this figure, reference numeral 10 denotes an internal intermediate pressure type multistage compression rotary compressor that uses carbon dioxide (CO 2 ) as a refrigerant. The multistage compression rotary compressor 10 includes a cylindrical sealed container 12 made of a steel plate and the sealed container. 12 and the first rotary compression element 32 (first stage) and the second motor 14 arranged below the motor 14 and driven by the rotary shaft 16 of the motor 14. The rotary compression mechanism section 18 is composed of a rotary compression element 34 (second stage).
[0015]
The sealed container 12 has an oil reservoir at the bottom, and is composed of a container body 12A that houses the electric motor 14 and the rotary compression mechanism 18 and a substantially bowl-shaped end cap (lid body) 12B that closes the upper opening of the container body 12A. In addition, a circular mounting hole 12D is formed in the center of the upper surface of the end cap 12B, and a terminal (wiring is omitted) 20 for supplying power to the motor 14 is welded and fixed to the mounting hole 12D. ing.
[0016]
The electric motor 14 includes a stator 22 that is annularly attached along the inner peripheral surface of the upper space of the hermetic container 12, and a rotor 24 that is inserted into the stator 22 with a slight space therebetween. . The rotor 24 is fixed to a rotating shaft 16 that passes through the center and extends in the vertical direction.
[0017]
The stator 22 includes a laminate 26 in which donut-shaped electromagnetic steel plates are laminated, and a stator coil 28 wound around the teeth of the laminate 26 by a direct winding (concentrated winding) method.
[0018]
The rotor 24 is also formed of a laminated body 30 in which electromagnetic steel plates are laminated and caulked and fixed similarly to the stator 22. After the permanent magnet MG is inserted into the laminated body 30, the upper and lower end surfaces of the laminated body 30 are covered with a nonmagnetic end face member 108, and the end face member 108 is not in contact with the laminated body 30. A balance weight 100 to be described later is attached (upper two pieces, lower three pieces), and an oil separating plate 102 is superposed and attached to the upper side of the balance weight 100 located on the upper side of the laminate 30 (FIG. 2).
[0019]
The rotor 24, the balance weight 100,... And the oil separating plate 102 are integrally coupled by a rivet 104.
[0020]
On the other hand, an intermediate partition plate 36 is sandwiched between the first rotary compression element 32 and the second rotary compression element 34. That is, the first rotary compression element 32 and the second rotary compression element 34 of the rotary compression mechanism section 18 include an intermediate partition plate 36, cylinders 38 and 40 disposed above and below the intermediate partition plate 36, and the upper and lower The cylinders 38 and 40 are fitted with upper and lower eccentric portions 42 and 44 provided on the rotary shaft 16 with a phase difference of 180 degrees, and the upper and lower rollers 46 and 48 rotate eccentrically. An upper and lower vane (not shown) that divides the upper and lower cylinders 38 and 40 into a low-pressure chamber side and a high-pressure chamber side, an upper opening surface of the upper cylinder 38, and an lower opening surface of the lower cylinder 40 are closed. The upper support member 54 and the lower support member 56 are used as support members that also serve as 16 bearings.
[0021]
The balance weight 100 described above is attached to the rotor in order to balance the weight of the upper and lower eccentric parts 42 and 44 of the rotary compression mechanism 18 provided on the rotary shaft 16.
[0022]
The balance weight 100 is formed by punching a metal plate having a predetermined thickness by pressing, so that a central rotary shaft hole 120 for inserting the rotary shaft 16 and the balance weight 100 are laminated 30 of the rotor 24. 4 through-holes 122 for passing the rivet 104 used for fixing to the shaft, and a weight part 124 having a substantially semicircular shape centering on the rotation shaft hole 120. When the weight of the balance weight 100 is adjusted (for example, lightened), the notches 110 and 110 are formed on the side surface of the weight portion 124 of the balance weight 100 that is the peripheral surface side of the rotor 24 (laminated body 30). This is done by forming (FIG. 3).
[0023]
Thus, since the weight of the balance weight 100 is adjusted by notching the side surface on the peripheral surface side of the rotor 24, the rotor can be operated even when the oil separation plate 102 is superposed on the upper side. The cutout 110 of the balance weight 100 can be confirmed from the peripheral surface side of 24. For this reason, the rotor 24 to be attached to which type of rotary compressor can be distinguished by the notch 110 formed on the side surface of the weight portion 124 of the balance weight 100, and an incorrect balance weight rotor can be identified. The inconvenience of assembling the rotary compressor can be avoided beforehand.
[0024]
On the other hand, in the upper support member 54 and the lower support member 56, the suction passages 58 and 60 communicating with the inside of the upper and lower cylinders 38 and 40 respectively through the suction ports 161 and 162 are partially recessed, and the recessed portions are formed. Discharge silencer chambers 62 and 64 formed by closing with an upper cover 66 and a lower cover 68 are provided.
[0025]
The discharge silencing chamber 64 and the inside of the sealed container 12 are communicated with each other through a communication passage (not shown) that penetrates the upper and lower cylinders 38 and 40 and the intermediate partition plate 36, and an intermediate discharge pipe 121 stands at the upper end of the communication passage. The intermediate pressure refrigerant compressed by the first rotary compression element 32 is discharged from the intermediate discharge pipe 121 into the sealed container 12.
[0026]
Further, in the intermediate partition plate 36 that closes the lower opening surface of the upper cylinder 38 and the upper opening surface of the lower cylinder 40, the outer peripheral surface and the inner peripheral surface are located at positions corresponding to the suction side in the upper cylinder 38. A through-hole 131 is formed so as to constitute an oil supply path, and a sealing material 132 on the outer peripheral surface side of the through-hole 131 is press-fitted to seal the opening on the outer peripheral surface side. A communication hole 133 extending upward is formed in the middle of the through hole 131.
[0027]
A communication hole 134 communicating with the communication hole 133 of the intermediate partition plate 36 is formed in the suction port 161 (suction side) of the upper cylinder 38. Further, in the rotary shaft 16, there are oil holes (not shown) extending in the straight direction at the center of the shaft and lateral oil supply holes 82 and 84 (also formed in the upper and lower eccentric portions 42 and 44) communicating with the oil holes. The opening on the inner peripheral surface side of the through hole 131 of the intermediate partition plate 36 communicates with an oil hole (not shown) through these oil supply holes 82 and 84.
[0028]
Here, the refrigerant is environmentally friendly, uses the carbon dioxide (CO 2 ), which is a natural refrigerant in consideration of flammability and toxicity, and the oil as the lubricating oil is, for example, mineral oil (mineral oil), Existing oils such as alkylbenzene oil, ether oil, ester oil and PAG (polyalkyl glycol) are used.
[0029]
On the side surface of the container body 12 </ b> A of the sealed container 12, the suction passages 58 and 60 of the upper support member 54 and the lower support member 56, the discharge muffler chamber 62, and the upper cover 66 (position substantially corresponding to the lower end of the electric motor 14). The sleeves 141, 142, 143, and 144 are fixed by welding at corresponding positions. The sleeves 141 and 142 are adjacent to each other vertically, and the sleeve 143 is substantially diagonal to the sleeve 141. Further, the sleeve 144 is located at a position shifted by approximately 90 degrees from the sleeve 141.
[0030]
One end of a refrigerant introduction pipe 92 as a refrigerant passage for introducing refrigerant gas into the upper cylinder 38 is inserted and connected in the sleeve 141, and one end of the refrigerant introduction pipe 92 communicates with the suction passage 58 of the upper cylinder 38. To do. The refrigerant introduction pipe 92 passes through the upper side of the sealed container 12 to reach the sleeve 144, and the other end is inserted and connected into the sleeve 144 to communicate with the sealed container 12.
[0031]
In addition, one end of a refrigerant introduction pipe 94 for introducing refrigerant gas into the lower cylinder 40 is inserted and connected in the sleeve 142, and one end of the refrigerant introduction pipe 94 communicates with the suction passage 60 of the lower cylinder 40. In addition, a refrigerant discharge pipe 96 is inserted and connected into the sleeve 143, and one end of the refrigerant introduction pipe 96 communicates with the discharge silencer chamber 62.
[0032]
Next, the operation of the rotary compressor 10 with the above configuration will be described. When the stator coil 28 of the electric motor 14 is energized through the terminal 20 and a wiring (not shown), the electric motor 14 is activated and the rotor 24 rotates. By this rotation, the upper and lower rollers 46 and 48 fitted to the eccentric portions 42 and 44 provided integrally with the rotary shaft 16 are eccentrically rotated in the cylinders 38 and 40. At this time, since the weight balance is achieved by the eccentric parts 42 and 44 provided on the rotating shaft 16 and the balance weight 100 of the rotor 24, the generation of vibration and noise is minimized.
[0033]
As a result, the low-pressure refrigerant sucked into the low-pressure chamber side of the lower cylinder 40 from the suction port 162 through the refrigerant introduction pipe 94 and the suction passage 60 formed in the lower support member 56 is caused by the operation of the roller 48 and the vane. Compressed to an intermediate pressure, discharged from the discharge port (not shown) from the high pressure chamber side of the lower cylinder 40 and the discharge silencer chamber 64 formed in the lower support member 56 from the intermediate discharge pipe 121 into the sealed container 12 via a communication path (not shown). Is done. Thereby, the inside of the sealed container 12 becomes an intermediate pressure.
[0034]
The intermediate-pressure refrigerant gas in the sealed container 12 exits from the sleeve 144, passes through the refrigerant introduction pipe 92 and the suction passage 58 formed in the upper support member 54, and passes from the suction port 161 to the low pressure chamber side of the upper cylinder 38. Inhaled. The sucked intermediate-pressure refrigerant gas is compressed in the second stage by the operation of the roller 46 and the vane to become a high-temperature / high-pressure refrigerant gas, which is formed on the upper support member 54 from the high-pressure chamber side through a discharge port (not shown). Then, the air flows into the radiator provided outside via the discharge silencer chamber 62 and the refrigerant discharge pipe 96.
[0035]
As described above, according to the present invention, in the balance weight 100 attached to the rotor 24, the weight adjustment notch 110 is provided on the side surface of the balance weight 100 which is the peripheral surface side of the rotor 24 in a state of being attached to the rotor 24. Therefore, the weight adjustment notch 110 of the balance weight 100 is positioned on the peripheral surface side of the rotor 24 to which other components are not normally attached.
[0036]
Thereby, in a state where the balance weight 100 is attached to the rotor 24, the notch 110 of the balance weight 100 can be confirmed from the outside, and rotation with a balance weight different from that for the rotary compressor 10 is attached. It is possible to avoid the occurrence of vibration and noise of the rotary compressor caused by the assembly of the child, and to improve the reliability.
[0037]
Although the vertical type multi-stage compression rotary compressor 10 has been described in the embodiment, it is needless to say that the present invention is not limited to this and can be applied to a horizontal type rotary compressor having a rotating shaft in the horizontal direction. Further, although the rotary compressor has been described as a two-stage compression type rotary compressor including the first and second rotary compression elements, the rotary compressor is not limited to this, and a rotary compressor having a single rotary compression element or three rotary compression elements are provided. The present invention is effective even when applied to a multistage compression rotary compressor having at least two. Further, the inventions of claims 1 and 2 are not limited to the electric motor for the rotary compressor.
[0038]
【The invention's effect】
As described above in detail, according to the balance weight of the first aspect, the center rotation shaft hole for inserting the rotation shaft of the electric motor and the weight portion having a substantially semicircular shape centering on the rotation shaft hole are provided. Since the weight adjustment notch is formed on the side surface of the weight portion, which is the peripheral surface side of the rotor in a state of being attached to the rotor , normally, on the peripheral surface side of the rotor to which other components cannot be attached A notch for adjusting the weight of the balance weight is located.
[0039]
As a result, with the balance weight attached to the rotor, it becomes possible to check the notch of the balance weight from the outside, and it is possible to easily avoid the occurrence of inconvenience due to mixing of different models. It is. In particular, since the notch is formed in the side surface of the weight portion having a substantially semicircular shape with the central rotation shaft hole as the center, there is an advantage that the inertia force can be increased.
[0040]
According to the method for adjusting the weight of the balance weight of the rotor for an electric motor according to the second aspect of the invention, the weight is adjusted by notching the side surface of the weight portion that is the peripheral surface side of the rotor while attached to the rotor. Therefore, in a state where the balance weight is attached to the rotor, the weight adjustment notch for the balance weight is normally positioned on the peripheral surface side of the rotor to which no other part is attached.
[0041]
As a result, with the balance weight attached to the rotor, the notch of the balance weight can be confirmed from the outside, and the occurrence of inconvenience due to mixing of different models can be easily avoided. It will be. In particular, since the notch is formed in the side surface of the balance portion having a weight portion having a substantially semicircular shape with the central rotation shaft hole as a center, there is an advantage that the inertia force can be increased.
[0042]
According to the rotary compressor of the invention of claim 3, the motor and the rotary compression element driven by the motor are provided in the hermetic container, and formed on the cylinder for constituting the rotary compression element and the rotary shaft of the motor. a roller that eccentrically rotates is fitted into an eccentric portion which is in the cylinder, a balance weight attached to the rotor end face of the electric motor, an oil separation plate attached by polymerization in the balance weight, the balance weight is A rotation shaft hole in the center for inserting the rotation shaft, and a weight portion having a substantially semicircular shape centering on the rotation shaft hole, and attached to the rotor, and on the peripheral surface side of the rotor a side surface of the weight portion made, since notches for weight adjustment is formed, usually for weight adjustment of the balance weight on the peripheral surface of the rotor other components can not be mounted Cut-out is to be located.
[0043]
As a result, even when the balance weight is attached to the rotor and hidden behind the oil separation plate, the notch of the balance weight can be confirmed from the outside, and a balance weight different from that for the rotary compressor can be obtained. Thus, it is possible to avoid the occurrence of vibration and noise of the rotary compressor caused by assembling the attached rotor and to improve the reliability. In particular, since the notch is formed in the side surface of the weight portion having a substantially semicircular shape with the central rotation shaft hole as the center, there is an advantage that the inertia force can be increased.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an internal intermediate pressure multi-stage compression rotary compressor according to an embodiment to which the present invention is applied.
FIG. 2 is a longitudinal sectional view of a rotor of an electric motor according to an embodiment to which the present invention is applied.
FIG. 3 is a front view of the balance weight of the present invention.
FIG. 4 is a front view of a conventional balance weight.
FIG. 5 is a front view of a conventional balance weight.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Internal intermediate pressure type multistage compression type rotary compressor 12 Sealed container 14 Electric motor 16 Rotating shaft 22 Stator 24 Rotor 30 Laminated body 42, 44 Eccentric part 100 Balance weight 102 Oil separation plate 104 Rivet 108 End surface member 110 Notch 120 Rotating shaft hole 122 Through hole 124 Weight part

Claims (3)

電動機の回転子端面に取り付けられるバランスウエイトにおいて、
前記電動機の回転軸を挿入するための中央の回転軸孔と、該回転軸孔を中心として略半円形状を呈するウエイト部を備え、
前記回転子に取り付けられた状態で当該回転子の周面側となる前記ウエイト部の側面に、重量調整用の切欠を形成したことを特徴とする電動機用回転子のバランスウエイト。In the balance weight attached to the rotor end face of the motor,
A rotation shaft hole in the center for inserting the rotation shaft of the electric motor, and a weight portion having a substantially semicircular shape around the rotation shaft hole,
A balance weight of a rotor for an electric motor, wherein a weight adjustment notch is formed on a side surface of the weight portion which is a peripheral surface side of the rotor in a state of being attached to the rotor. 電動機の回転子端面に取り付けられ、前記電動機の回転軸を挿入するための中央の回転軸孔と、該回転軸孔を中心として略半円形状を呈するウエイト部を備えたバランスウエイトの重量調整方法であって、
前記回転子に取り付けられた状態で当該回転子の周面側となる前記ウエイト部の側面を切り欠くことにより、重量を調整することを特徴とする電動機用回転子のバランスウエイトの重量調整方法。A weight adjustment method for a balance weight, which is attached to a rotor end face of an electric motor and includes a central rotary shaft hole for inserting the rotary shaft of the electric motor, and a weight portion having a substantially semicircular shape centering on the rotary shaft hole Because
A weight adjustment method for a balance weight of a rotor for an electric motor, wherein the weight is adjusted by notching a side surface of the weight portion which is a peripheral surface side of the rotor in a state of being attached to the rotor. 密閉容器内に電動機と、該電動機にて駆動される回転圧縮要素を備えたロータリコンプレッサにおいて、
前記回転圧縮要素を構成するためのシリンダ及び前記電動機の回転軸に形成された偏心部に嵌合されて前記シリンダ内で偏心回転するローラと、
前記電動機の回転子端面に取り付けられたバランスウエイトと、
該バランスウエイトに重合して取り付けられるオイル分離板とを備え、
該バランスウエイトは、前記回転軸を挿入するための中央の回転軸孔と、該回転軸孔を中心として略半円形状を呈するウエイト部を有し、前記回転子に取り付けられた状態で当該回転子の周面側となる前記ウエイト部の側面に、重量調整用の切欠が形成されていることを特徴とするロータリコンプレッサ。In a rotary compressor including an electric motor in a sealed container and a rotary compression element driven by the electric motor,
A cylinder for constituting the rotary compression element and a roller fitted into an eccentric part formed on a rotary shaft of the electric motor and rotated eccentrically in the cylinder;
A balance weight attached to the rotor end face of the electric motor ;
An oil separator plate that is attached to the balance weight in a superposed manner ;
The balance weight has a central rotation shaft hole for inserting the rotation shaft, and a weight portion having a substantially semicircular shape centering on the rotation shaft hole, and the balance weight is attached to the rotor. A rotary compressor characterized in that a weight adjusting notch is formed on a side surface of the weight portion which is a peripheral surface side of the child.
JP2002023405A 2002-01-31 2002-01-31 Balance weight of rotor for motor, method for adjusting weight thereof, and rotary compressor Expired - Lifetime JP3789825B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002023405A JP3789825B2 (en) 2002-01-31 2002-01-31 Balance weight of rotor for motor, method for adjusting weight thereof, and rotary compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002023405A JP3789825B2 (en) 2002-01-31 2002-01-31 Balance weight of rotor for motor, method for adjusting weight thereof, and rotary compressor

Publications (2)

Publication Number Publication Date
JP2003230260A JP2003230260A (en) 2003-08-15
JP3789825B2 true JP3789825B2 (en) 2006-06-28

Family

ID=27746127

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002023405A Expired - Lifetime JP3789825B2 (en) 2002-01-31 2002-01-31 Balance weight of rotor for motor, method for adjusting weight thereof, and rotary compressor

Country Status (1)

Country Link
JP (1) JP3789825B2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5128840B2 (en) * 2007-04-10 2013-01-23 アイチエレック株式会社 Manufacturing method of embedded permanent magnet rotor and embedded permanent magnet rotor using the manufacturing method
US9581160B2 (en) 2011-03-24 2017-02-28 Panasonic Intellectual Property Management Co. Ltd. Scroll compression device
WO2012127755A1 (en) 2011-03-24 2012-09-27 三洋電機株式会社 Scroll compression device
JP2012202252A (en) * 2011-03-24 2012-10-22 Sanyo Electric Co Ltd Scroll compression device
JP5413491B2 (en) 2012-07-30 2014-02-12 ダイキン工業株式会社 Rotating machine and compressor
CN104659989A (en) * 2015-01-09 2015-05-27 广东威灵电机制造有限公司 Motor and split washer thereof
DE102018121645A1 (en) 2018-09-05 2020-03-05 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Process for balancing rotors of electrical machines

Also Published As

Publication number Publication date
JP2003230260A (en) 2003-08-15

Similar Documents

Publication Publication Date Title
EP1703129B1 (en) Rotary vane compressor
KR101099810B1 (en) Hermetically sealed rotary compressor
TWI381095B (en) Rotary compressor
JP3143327B2 (en) Hermetic rotary compressor
JP2006152950A (en) Multi-stage compression type rotary compressor
JP3789825B2 (en) Balance weight of rotor for motor, method for adjusting weight thereof, and rotary compressor
JP4289975B2 (en) Multi-stage rotary compressor
WO2011125652A1 (en) Rotary compressor
JP2004245067A (en) Rotary compressor
JP2007085254A (en) Compressor
JP2004084568A (en) Multistage compression type rotary compressor and displacement capacity ratio setting method therefor
WO2007114020A1 (en) Compressor
JP3935854B2 (en) Rotary compressor
JP3096628B2 (en) Hermetic rotary compressor
JP4171331B2 (en) Manufacturing method of airtight container for compressor
JP4024067B2 (en) Horizontal multi-stage rotary compressor
JP2004150370A (en) Sealed electric compressor
JP3819795B2 (en) Internal intermediate pressure type multi-stage compression rotary compressor
JP4100969B2 (en) Rotary compressor
JP4508883B2 (en) Rotary compressor
JP2011074814A (en) Rotary compressor and manufacturing method for the same
JP3896020B2 (en) Rotary compressor
JP3863799B2 (en) Multi-stage rotary compressor
JP2003293952A (en) Refrigerant compressor and balance weight for refrigerant compressor
WO2012117598A1 (en) Rotary compressor

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20040405

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20051125

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20051205

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20060131

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20060228

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20060329

R151 Written notification of patent or utility model registration

Ref document number: 3789825

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R151

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100407

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110407

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120407

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130407

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140407

Year of fee payment: 8

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term