JP4443749B2 - Hermetic compressor - Google Patents

Hermetic compressor Download PDF

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JP4443749B2
JP4443749B2 JP2000294828A JP2000294828A JP4443749B2 JP 4443749 B2 JP4443749 B2 JP 4443749B2 JP 2000294828 A JP2000294828 A JP 2000294828A JP 2000294828 A JP2000294828 A JP 2000294828A JP 4443749 B2 JP4443749 B2 JP 4443749B2
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terminal
stator
oil
plate
terminal plate
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JP2002098054A (en
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泉 小野田
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Toshiba Carrier Corp
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Toshiba Carrier Corp
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Description

【0001】
【発明の属する技術分野】
本発明は長配管やマルチエアコンシステム等の空気調和機や冷凍装置の圧縮機として好適な密閉型圧縮機に係り、特に、吐油の低減と、圧縮機組立時の口出線と回転子等回転体との接触防止の容易化とを図った密閉型圧縮機に関する。
【0002】
【従来の技術】
従来の分布巻24スロットモータを備え、インバータにより高周波運転が行なわれる密閉型圧縮機では、吐油防止策として、油分離用の吐油防止板を回転子上に固定している。すなわち、圧縮機構部から密閉ケース内に潤滑油を含むガス冷媒が吐出されると、この冷媒ガスが密閉ケース内で上昇して吐油防止板に衝突する。すると、この吐油防止板は回転子と共に回転しているので、潤滑油を含むオイルミスト状の冷媒ガスから油分が遠心分離され、吐油防止板の周囲にある固定子巻線端部のコイルエンドに飛散されて衝突させる。このために、密閉ケースから冷凍サイクルへ吐出される冷媒ガス中の油分を低減できる。一方、この固定子コイルエンドに飛散付着された油分はその固定子に伝って滴下して下方の油溜りに自重落下して戻る。
【0003】
しかし、この24スロットモータの場合、固定子巻線コイルエンドの高さが高いために吐油防止板形状は特定の形状にせずとも油分離効率ひいては吐油特性に大きな影響はなく、容易にオイルミストが衝突可能である。
【0004】
また密封端子と固定子巻線とを接続する口出線としては、塑性変形する被覆銅線を使用することにより、この口出線を密閉ケース内へ組込み際の手作業による接続の容易を図っている。また、この口出線の取付位置は、口出線の手作業成形によって上下に若干ばらついても、固定子巻線のコイルエンドが高いため、この口出線と回転子との接触事故が発生する可能性は低い。
【0005】
一方、永久磁石を有する回転子と、磁極歯が12個以下の固定子とを備えた電動機を組み込む密閉型圧縮機では、直に固定子に巻線を施すことができるため、巻線コイルエンドの高さを低くできる。このため、銅損が少なく、省エネルギ性に優れているうえに、スロット断面積が大きいために吐油量を上記従来例よりも大幅に低減することができる。
【0006】
【発明が解決しようとする課題】
しかしながら、上記永久磁石等を備えた電動機を組み込む密閉型圧縮機では、次の課題がある。
【0007】
1.まず、冷凍サイクルが長いマルチエアコンや長配管の大形でインバータ駆動の空気調和機では、吐油防止手段として吐油防止板が必要であるが、固定子の巻線コイルエンドが吐油防止板よりも低くなるので、回転中の吐油防止板により遠心分離されたオイルミストが遠心方向水平へ飛散しても巻線コイルエンドに衝突する可能性が低く、油溜りへ戻す効率が低い。
【0008】
2.また、口出線を密閉ケース内へ組み込むときには、口出線の手成形が巻線コイルエンドが低いために容易ではない。さらに、口出線の取付位置の上下方向のばらつきによっては、口出線に吐油防止板が接触して破損させる可能性もある。
【0009】
さらに、口出線は、その取付作業のためには長い方が効率がよいが、長い場合には、その分、吐油防止板との接触事故が発生する可能性が高くなるので、その接触事故を防止するためには、短かい方が好ましい。
【0010】
本発明は、このような事情を考慮してなされたもので、その目的は、圧縮機組立時の口出線と回転子等回転体との接触防止の容易化と吐油低減とを共に図ることができる省エネルギ特性の高い密閉型圧縮機を提供することにある。
【0011】
【課題を解決するための手段】
本願の請求項1に係る発明は、永久磁石および回転軸を有する回転子、および12個以下の磁極歯を有し、これら各磁極歯に巻線を集中巻した固定子とからなる電動機部と、上記回転軸により駆動される圧縮機構部と、上記圧縮機構部を下部に収容するとともに上記電動機部を上部に収容する一方、上面に密封端子を固着した密閉ケーシングと、上記回転子またはその回転軸に固定されて設けられ、中央部周辺が上記固定子の巻線コイルエンド上面より上方に位置し、外周部が上記固定子の巻線コイルエンド上面より下方に位置する油分離用の吐油防止板と、を備えた密閉型圧縮機において、上記固定子の巻線の端部を環状絶縁体からなる端子板及び口出線を介して上記密封端子に接続すると共に、上記端子板の一端面を、上記吐油防止板よりも上記圧縮機構部の反対側に位置させるとともに、上記口出線の端子板からの立上り部を端子板の上記一端面側に配置したことを特徴とする密閉型圧縮機である。
【0012】
この発明によれば、圧縮機構部を駆動する電動機部として、直に固定子に巻線を施すことができるために巻線コイルエンド高さを低くでき、そのために銅損が少なく省エネルギ性に優れている電動機を使用するので、密閉型圧縮機としても省エネルギ性に優れている。
【0013】
また、固定子巻線の端部と、密封端子に接続される口出線とを環状絶縁体からなる端子板を介して接続するので、端子板を回転する吐油防止板から離間配置することにより、口出線が吐油防止板に接触して破損するのを防止することができる。
【0014】
さらに、潤滑油を含有しているオイルミスト状の冷媒ガスから当該潤滑油分を油分離用の吐油防止板により遠心分離して密閉ケース内の油溜りに戻すので、密閉型圧縮機から冷凍サイクル等へ吐出される吐油量を減少させることができる。
【0025】
【発明の実施の形態】
以下、本発明の実施形態を図1〜図12に基づいて説明する。なお、これらの図中、同一または相当部分には同一符号を付している。
【0026】
図1は本発明の第1実施形態に係るツインロータリ式密閉型圧縮機1の縦断面図、図2は図1のII−II線切断部の端面図である。この圧縮機1は密閉ケース2内に、冷媒を圧縮するツインロータリ式圧縮機構部3と、この圧縮機構部3を駆動する電動機部4とを収容している。密閉ケース2は有底円筒状のメインケース2aの図1中上部開口端部に、有蓋円筒状の上部ケース2bの下部開口端部を挿入し、その挿入端部を溶接等により固着して形成される。メインケース2aの内底部上には所要量の潤滑油を溜める油溜り2cを形成している。
【0027】
電動機部4は永久磁石を有する回転子であるロータ5と、メインケース2aの内周面に圧入等により固定される固定子であるステータ6とを備えており、ロータ5には回転軸7を同心状に固定している。
【0028】
ステータ6は12個以下の磁極歯を有し、例えば図2に示すように環状の積層鉄心8の内周部に、例えば6個の磁極歯9を突設し、これら各磁極歯9には巻線10をそれぞれ集中巻しており、その巻線端部であるコイルエンド10aが図1に示すように軸方向両端から外方へそれぞれ突出している。
【0029】
一方、ツインロータリ式圧縮機構部3は仕切板3aの図1中上,下両面を上下一対のシリンダ11,12により挟持し、これら各シリンダ11,12内にはローラ13,14を偏心回転自在に収容し、各シリンダ11,12内の吸込口にはアキュムレータ15に接続された上下一対の吸込管16a,16bをそれぞれ接続している。
【0030】
また、両シリンダ11,12の各軸方向開口端(図1では上下端)を上下一対の主軸受17と副軸受18とにより気密に密閉し、これら主,副軸受17,18により回転軸7を回転自在に支承している。この回転軸7の上下一対のクランク部7a,7bが各ローラ13,14内に偏心回転自在に内嵌され、各クランク部7a,7bの偏心回転により各ローラ13,14がシリンダ11,12内で転動しつつ偏心回転してシリンダ11,12内の冷媒を圧縮して吐出ポート19から密閉ケース2内へ一旦吐出するようになっている。
【0031】
そして、図1に示すように環状のステータ6上には、これより若干小径で電気絶縁体よりなる環状の第1の端子板20を同心状に載置固定している。
【0032】
図3に示すように第1の端子板20は、その電気絶縁体により環状に形成された軸方向断面形状が角形の本体20aの一面(図1と図2では下面)に、図中下方に突出する複数のストッパ21を周方向に所定の間隔を置いて一体に突設している。また、環状の本体20aの一端部(図1と図3では右端部)には、複数の導電ピン22を板厚方向に貫通するように植設して上下両端部を上下方向に突出させ、その下部突出端部をステータ6の巻線の図示しない給電ピンに電気的に接続するように構成する一方、これら導電ピン22の上部突出端部22aを口出線23の下コネクタ23aに着脱自在かつ電気的に接続されるようになっている。
【0033】
口出線23は撓曲自在の例えば被覆銅線よりなる本体23bの図3中上端部に、密封端子24に着脱自在かつ電気的に接続される上コネクタ23cを設けている。
【0034】
図1に示すように密封端子24は有蓋円筒状の上部ケース2bの外面に配設され、図示しない給電ケーブルのコネクタに着脱自在かつ電気的に接続され、受電するようになっている。また、上部ケース2bには密閉ケース2内に吐出された冷媒ガスを外部の冷凍サイクル等に吐出させる吐出管25を設けている。
【0035】
そして、図1に示すように油分離用の吐油防止板26を回転軸7の図中上端部に固定している。図4に示すように吐油防止板26は円形平板よりなり、回転軸7に固定される円筒状の固定端部26aを同心状に一体ないし一体的に形成している。
【0036】
図1に示すように吐油防止板26はその円筒状固定端部26aの外周よりも外側の外周部を、圧縮機構部3側へ下り勾配で傾斜するように形成され、その傾斜角θは回転軸7の中心軸Oに対して90°以内の鋭角に設定されている。
【0037】
したがって、この密閉型圧縮機1によれば、圧縮機構部3を駆動する電動機部4として、直にステータ6に巻線を施すことができるために巻線コイルエンド10aの高さを低くでき、そのために銅損が少なく省エネルギ性に優れている電動機を使用するので、密閉型圧縮機1としても省エネルギ性に優れている。
【0038】
また、コイルエンド10aと、密封端子24に接続される口出線23とを環状絶縁体からなる第1の端子板20を介して接続するので、第1の端子板20を、回転する吐油防止板26から離間配置することにより、口出線23が吐油防止板26に接触して破損するのを防止することができる。
【0039】
さらに、潤滑油を含有しているオイルミスト状の冷媒ガスから当該潤滑油を油分離用の吐油防止板26により遠心分離して密閉ケース2内の油溜り2cに戻すので、密閉型圧縮機1から冷凍サイクル等へ吐出される吐油量を減少させることができる。
【0040】
また、第1の端子板20を、その一端面が吐油防止板26よりも圧縮機構部3の反対側に配置することにより、第1の端子板20を吐油防止板26から離間させたので、第1の端子板20が吐油防止板26に接触するのを防止することができるうえに、吐油防止板26により遠心分離された潤滑油分が第1の端子板20における密封端子24とコイルエンド10aとの接続部に飛散し、その接続部の導電性を低減させるのを防止することができる。
【0041】
さらに、吐油防止板26を電動機部4側に傾斜させたので、この吐油防止板26により遠心分離された冷媒ガス中の油分が電動機部4のコイルエンド10aに飛散衝突させる効率を向上させることができる。これにより、コイルエンド10aに付着した油分がこのステータ6を伝わって自重落下し、密閉ケース2の内底面上の油溜り2cに戻り、その油面を安定させることができる。
【0042】
図5は本発明の第2の実施形態に係る密閉型圧縮機1Aの縦断面図である。この密閉型圧縮機1Aは上記第1の端子板20を第2の端子板30に置換する一方、図7に示すように密封端子24を自動挿入可能に改良した点に主な特徴がある。
【0043】
図6に示すように第2の端子板30は電気絶縁体によりステータ6よりも若干小径の環状に形成された軸方向断面形状が角形の本体30aに、図中下方に突出する複数のストッパ30bを周方向に所定の間隔を置いて一体的に突設する一方、本体30aの一端部上に、図中上方に突出する例えば小円筒状の接続ガイド部31を一体的に突設している。
【0044】
図7に示すように接続ガイド部31は上部ケース2bの内方へ突出する密封端子24の複数の端子ピン内端部24bをそれぞれ挿入せしめて着脱自在かつ電気的に接続せしめるソケット孔31aをそれぞれ穿設している。これら各ソケット孔31aは、その開口先端部にて、各端子ピン内端部24bの挿入をガイドする外方に向けて拡開するテーパ面31bをそれぞれ形成する一方、各ソケット孔31aの図中下端面はステータ6の各巻線の図示しない給電ピンに電気的に接続されるようになっている。また、接続ガイド部31の図7中上端面31cを、上部ケース2bの内方の密封端子24の傾斜内端面24cに適合する傾斜面のガイド面に形成している。
【0045】
そして、図7中矢印に示すように上部ケース2bをメインケース2aの開口上端部内に自動挿入し得るように、密封端子24の各端子ピン24aの内端部24bを、上部ケース2bの下り傾斜面に対してほぼ直角に立設された外端部24dに対して所要角θa折曲してほぼ垂直に垂下させている。
【0046】
また、第2の端子板30は、その本体30aがステータ6のコイルエンド10a上に載置されたときに、各ストッパ30bがステータ6の積層鉄心8上端部との間で若干の間隔dが形成されるようになっており、その後、コイルエンド10aの弾性変形により第2の端子板30が沈み込んだときには、各ストッパ30bがステータ6の積層鉄心8の上端上に当接してこの第2の端子板30の荷重を複数のストッパ30bを介して積層鉄心8により支持することができる。
【0047】
この密閉型圧縮機1Aによれば、上部ケース2bをメインケース2a内に自動挿入する際に、第2の端子板30の接続ガイド31に密封端子24の端子ピンまたはステータ6の図示しない給電部ピンの先端が当って、その接続方向が接続ガイド31のテーパ面31bにより案内されて各ソケット孔31内に挿入されるので、上記ケース2bの自動挿入位置の誤差を解消することができる。したがって、上部ケース2bのメインケース2a内への自動挿入により上部ケース2bの密封端子24を第2の端子板30に自動的に接続することができる自動挿入組立が可能となり、密封端子24に接続される上記口出線23とその取付作業とを共に省略することができる。
【0048】
また、メインケース2a内の所定位置に第2の端子板30を設置すると、この第2の端子板30の各ストッパ30bがステータ6の積層鉄心8軸方向等の端面に当接して第2の端子板30の荷重をステータ6により支持するので、第2の端子板30の荷重がコイルエンド10aに負荷されて過剰にストレスが加わるのを防止することができる。
【0049】
図8は本発明の第3実施形態に係る密閉型圧縮機1Bの概略縦断面図である。この密閉型圧縮機1Bは密閉ケース2内の上方に、圧縮機構部3を配設する一方、この圧縮機構部3を駆動する電動機部4を圧縮機構部3の下方に配設する一方、メインケース2bの側面に密封端子24を設け、電動機部4と圧縮機構部3との間に、第3の端子板40を設けた点に主な特徴がある。
【0050】
図9に示すように第3の端子板40は電気絶縁体によりステータ6よりも若干小径の環状に形成された軸方向断面形状が角形の本体40aに、図中下方に突出する複数のストッパ40bを周方向に所定の間隔を置いて突設する一方、ステータ6の三相等の各巻線の図示しない給電ピンに電気的に接続される複数の電気接続端子40cを図中下方に突出するように突設している。
【0051】
そして、第3の端子板40は、その本体40aの一端部の側面に、角板状の係合部41を一体に連成している。図10にも示すように係合部41はその外側面に、密封端子24の各端子ピン24aの内端部24bを着脱自在に嵌入せしめる複数のソケット孔41aを密封端子24の各端子ピン24aの配置に対応して設けている。これら各ソケット孔41aに端子ピン内端部24bの挿入をガイドする例えば断面形状が半円形のガイド溝41bをそれぞれ形成している。これらの各ガイド溝41bは各ソケット孔41aから係合部41の下端まで形成されて下端で開口している。
【0052】
したがって、図8に示すように密封端子24を側面に既に取り付けてあるメインケース2a内に、第3の端子板40を、図8中上方から徐々に挿入して行くと、密封端子24の各端子ピン24aの内端部24bがまず、第3の端子板40の係合部41の各ガイド溝41bの図9,10中下端開口から直角方向から挿入されていき、さらに、第3の端子板40を図中下方へ落とし込むことにより案内されて、各端子ピン内端部24bが各ソケット孔41a内に案内されて挿入されると、係合部41のほぼ全体の弾性復元力により係合部41の外側面が密封端子24の内端面側に戻って吻合する。これにより密封端子24の各端子ピン24aが第3の端子板40の各ソケット孔41aに電気的に接続される。
【0053】
図11は第4の端子板50の外観斜視図である。この第4の端子板50は電気絶縁体によりステータ6よりも若干小径の環状に形成された軸方向断面形状が角形の本体50aに、図中下方に突出する複数のストッパ50bを周方向に所定の間隔を置いて突設する一方、ステータ6の三相等の各巻線の図示しない給電ピンに電気的に接続される複数の電気接続端子50cを図中下方に突出するように突設している。
【0054】
そして、第4の端子板50は、その本体50aの一端部上に、角板状の係合部51をこれより小幅の括れ部52を介して一体に連成している。係合部51はその外側面に、密封端子24の各端子ピン24aの内端部24bを嵌入せしめる複数のソケット孔53を各端子ピン24aの配置に対応して設けている。そして、図12に示すようにこれら各ソケット孔53の開口先端部には端子ピン内端部24bの挿入をガイドするように、先方に向けて拡開するテーパ孔53aをそれぞれ形成している。これらの各テーパ孔53aの後方(奥)には端子ピン24aに着脱自在に挿入されて電気的に接続される導電スリーブ53bが配設され、これら各導電スリーブ53bは各導線53cを介して上記各電気接続端子50cにそれぞれ電気的に接続されている。
【0055】
したがって、図8に示すように密封端子24を側面に既に取り付けてあるメインケース2a内に、第4の端子板50を、メインケース2aの図8中上部開口端から徐々に挿入して行くと、密封端子24の各端子ピン内端部24bがまず、第4の端子板50の係合部51の外側面に当接して係合部51をその内方へ押し付ける。このために、括れ部52が弾性変形して係合部51がその内方へ傾斜する。この後、さらに、第4の端子板50を図中下方へ押し込むと、各端子ピン内端部24bが各ソケット孔53のテーパ孔52a内に挿入される。すると、括れ部52の弾性復元力により係合部52全体が外方へ戻され、各導電スリーブ53b内に案内されて挿入される。これにより、密封端子24の各端子ピン24が第4の端子板50の各ソケット孔53に電気的に接続される。
【0056】
したがって、この第4の端子板50によっても、密閉ケース2の側面に密封端子24を設けた密閉型圧縮機1Bにも適用することができる。
【0057】
【発明の効果】
以上説明したように本発明によれば、圧縮機構部を駆動する電動機部として、直に固定子に巻線を施すことができるために巻線コイルエンド高さを低くでき、そのために銅損が少なく省エネルギ性に優れている電動機を使用するので、密閉型圧縮機としても省エネルギ性に優れている。
【0058】
また、固定子巻線の端部と、密封端子に接続される口出線とを環状絶縁体からなる端子板を介して接続するので、端子板を回転する吐油防止板から離間配置することにより、口出線が吐油防止板に接触して破損するのを防止することができる。
【0059】
さらに、潤滑油を含有しているオイルミスト状の冷媒ガスから当該潤滑油を油分離用の吐油防止板により遠心分離して密閉ケース内の油溜りに戻すので、密閉型圧縮機から冷凍サイクル等へ吐出される吐油量を減少させることができる。
【0060】
そして、端子板を、その一端面が吐油防止板よりも圧縮機構部の反対側に配置することにより、端子板を吐油防止板から離間させたので、端子板が吐油防止板に接触するのを防止することができるうえに、吐油防止板により遠心分離された潤滑油分が端子板の密封端子と固定子巻線端部との接続部に飛散し、その接続部の導電性を低減させるのを防止することができる。
【0061】
さらに、吐油防止板を圧縮機構部側に傾斜させたので、この吐油防止板により遠心分離された冷媒ガス中の油分が圧縮機構部側にある電動機部の固定子巻線端部に飛散衝突させる効率を向上させることができる。これにより、固定子巻線端に付着した油分がこの固定子を伝わって自重落下し、密閉ケースの内底面上の油溜りに戻り、その油面を安定させることができる。
【0062】
そして、例えば電動機部と端子板を密閉ケースの有底円筒状のメインケース内の所定位置に設置する一方、密閉端子を密閉ケースの上部(蓋部)ケースの所定位置に設置した場合、この上部ケースをメインケース内に自動挿入する際に、端子板の接続ガイドに密封端子のピンまたは固定子の給電部ピンの先端が当って、その接続方向が接続ガイドにより案内されるので、その自動挿入位置の誤差を解消することができる。したがって、上部ケースのメインケース内への自動挿入により上部ケースの密封端子を端子板に自動的に接続することができる自動挿入組立が可能となり、密封端子に接続される口出線とその取付作業とを共に省略することができる。
【図面の簡単な説明】
【図1】本発明の第1の実施形態に係る密閉型圧縮機の縦断面図。
【図2】図1のII−II線切断部の端面図。
【図3】図1で示す口出線と第1の端子板の分解斜視図。
【図4】図1で示す吐油防止板の分解斜視図。
【図5】本発明の第2の実施形態に係る密閉型圧縮機の縦断面図。
【図6】図5で示す第2の端子板の外観斜視図。
【図7】図5で示す密封端子の端子ピンと図6で示す第2の端子板のソケット孔との嵌合状態を示す部分縦断面図。
【図8】本発明の第3の実施形態に係る密閉型圧縮機の縦断面図。
【図9】図8で示す第3の端子板の外観斜視図。
【図10】図9のX矢視図。
【図11】本発明の第4の端子板の外観斜視図。
【図12】図11で示す第4の端子板のソケット孔の縦断面図。
【符号の説明】
1,1A,1B 密閉型圧縮機
2 密閉ケース
2a 密閉ケースの上部ケース
2b 密閉ケースのメインケース
2c 油溜り
3 圧縮機構部
4 電動機部
5 ロータ
6 ステータ
7 回転軸
9 磁極歯
10 巻線
11,12 シリンダ
13,14 ローラ
20 第1の端子板
20a 第1の端子板の本体
21 第1の端子板のストッパ
22 導電ピン
23 口出線
24 密封端子
26 吐油防止板
30 第2の端子板
30a 第2の端子板の本体
30b 第2の端子板のストッパ
31 接続ガイド部
31a ソケット孔
31b テーパ面
40 第3の端子板
40a 第3の端子板の本体
40b 第3の端子板のストッパ
41 係合部
41a ソケット孔
50 第4の端子板
50a 第4の端子板の本体
50b 第4の端子板のストッパ
50c 電気接続端子
51 係止部
52a テーパ孔
53 ソケット孔
53b 導電スリーブ
53c 導線
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hermetic compressor suitable as an air conditioner such as a long pipe or a multi-air conditioner system, or a compressor of a refrigeration apparatus, and more particularly, a reduction in oil discharge, an outlet wire and a rotor at the time of compressor assembly, etc. The present invention relates to a hermetic compressor that facilitates prevention of contact with a rotating body.
[0002]
[Prior art]
In a hermetic compressor that includes a conventional distributed winding 24-slot motor and performs high-frequency operation with an inverter, an oil separation preventing plate for oil separation is fixed on the rotor as a measure for preventing oil ejection. That is, when a gas refrigerant containing lubricating oil is discharged from the compression mechanism into the sealed case, the refrigerant gas rises in the sealed case and collides with the oil discharge prevention plate. Then, since the oil discharge prevention plate rotates with the rotor, the oil component is centrifuged from the oil mist refrigerant gas containing the lubricating oil, and the coil at the end of the stator winding around the oil discharge prevention plate It is scattered at the end and made to collide. For this reason, the oil content in the refrigerant gas discharged from the sealed case to the refrigeration cycle can be reduced. On the other hand, the oil component scattered and adhered to the stator coil end is dropped onto the stator and drops back to the oil reservoir below and returns.
[0003]
However, in the case of this 24-slot motor, the height of the stator winding coil end is high, so that the oil discharge prevention plate does not have a specific shape and does not have a significant effect on the oil separation efficiency and oil discharge characteristics. Mist can collide.
[0004]
In addition, as the lead wire connecting the sealed terminal and the stator winding, a plastically deformed coated copper wire is used to facilitate easy manual connection when the lead wire is assembled in the sealed case. ing. In addition, even if the lead wire mounting position varies slightly up and down due to manual molding of the lead wire, the coil end of the stator winding is high, so a contact accident between the lead wire and the rotor occurs. The possibility of doing is low.
[0005]
On the other hand, in a hermetic compressor incorporating a motor having a rotor having a permanent magnet and a stator having 12 or less magnetic pole teeth, the stator can be wound directly. Can be lowered. For this reason, there is little copper loss, it is excellent in energy saving, and since a slot cross-sectional area is large, the amount of oil discharge can be reduced significantly from the said prior art example.
[0006]
[Problems to be solved by the invention]
However, the hermetic compressor incorporating the electric motor including the permanent magnet has the following problems.
[0007]
1. First, in multi-air conditioners with a long refrigeration cycle and long-pipe large air conditioners driven by inverters, an oil discharge prevention plate is required as an oil discharge prevention means, but the winding coil end of the stator is the oil discharge prevention plate. Therefore, even if the oil mist centrifuged by the rotating oil discharge prevention plate is scattered horizontally in the centrifugal direction, the possibility of colliding with the winding coil end is low, and the efficiency of returning to the oil sump is low.
[0008]
2. Further, when the lead wire is incorporated into the sealed case, hand forming of the lead wire is not easy because the winding coil end is low. Furthermore, depending on the vertical variation in the attachment position of the lead wire, there is a possibility that the oil discharge preventing plate contacts the lead wire and is damaged.
[0009]
Furthermore, the longer the lead wire is, the better the efficiency for the mounting work. However, if the lead wire is long, there is a higher possibility that a contact accident with the oil discharge prevention plate will occur. In order to prevent an accident, the shorter one is preferable.
[0010]
The present invention has been made in consideration of such circumstances, and an object of the present invention is to facilitate both prevention of contact between the lead wire during compressor assembly and a rotating body such as a rotor, and reduction of oil discharge. Another object of the present invention is to provide a hermetic compressor with high energy saving characteristics.
[0011]
[Means for Solving the Problems]
The invention according to claim 1 of the present application includes an electric motor unit including a rotor having a permanent magnet and a rotating shaft, and a stator having twelve or less magnetic pole teeth and concentrated windings around the magnetic pole teeth. A compression mechanism driven by the rotating shaft; a compression casing that houses the compression mechanism in the lower part; and a motor-operated part in the upper part, and a sealed casing having a sealing terminal fixed on the upper surface; and the rotor or its rotation Oil separation oil is provided by being fixed to the shaft, and the periphery of the central portion is located above the upper surface of the winding coil end of the stator and the outer peripheral portion is located below the upper surface of the winding coil end of the stator. In the hermetic compressor provided with a prevention plate, the end of the stator winding is connected to the sealing terminal via a terminal plate made of an annular insulator and a lead wire. The end face should be the oil discharge prevention plate Also causes disposed opposite to the compression mechanism unit, a hermetic compressor, characterized in that a rising portion of the terminal board of the port output line to the one end face of the terminal plate.
[0012]
According to the present invention, as the motor part for driving the compression mechanism part, the winding can be wound directly on the stator, so that the winding coil end height can be lowered, and therefore copper loss is small and energy saving is achieved. Since an excellent electric motor is used, it is excellent in energy saving as a hermetic compressor.
[0013]
In addition, since the end of the stator winding and the lead wire connected to the sealed terminal are connected via a terminal plate made of an annular insulator, the terminal plate is arranged away from the rotating oil discharge prevention plate. Thus, it is possible to prevent the lead wire from coming into contact with the oil discharge prevention plate and being damaged.
[0014]
Furthermore, since the lubricating oil component is centrifuged from the oil mist refrigerant gas containing lubricating oil by the oil discharge prevention plate for oil separation and returned to the oil sump in the hermetic case, it can be refrigerated from the hermetic compressor. The amount of oil discharged to the cycle or the like can be reduced.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. In these drawings, the same or corresponding parts are denoted by the same reference numerals.
[0026]
FIG. 1 is a longitudinal sectional view of a twin rotary type hermetic compressor 1 according to the first embodiment of the present invention, and FIG. 2 is an end view of a section taken along line II-II in FIG. The compressor 1 houses a twin rotary compression mechanism 3 that compresses refrigerant and an electric motor 4 that drives the compression mechanism 3 in a sealed case 2. The sealed case 2 is formed by inserting the lower opening end of the covered cylindrical upper case 2b into the upper opening end in FIG. 1 of the bottomed cylindrical main case 2a and fixing the insertion end by welding or the like. Is done. An oil sump 2c for accumulating a required amount of lubricating oil is formed on the inner bottom of the main case 2a.
[0027]
The electric motor unit 4 includes a rotor 5 that is a rotor having permanent magnets, and a stator 6 that is a stator that is fixed to the inner peripheral surface of the main case 2 a by press-fitting or the like. It is fixed concentrically.
[0028]
The stator 6 has twelve or fewer magnetic pole teeth. For example, as shown in FIG. 2, for example, six magnetic pole teeth 9 project from the inner peripheral portion of the annular laminated iron core 8. Each of the windings 10 is concentratedly wound, and coil ends 10a, which are the ends of the windings, project outward from both ends in the axial direction as shown in FIG.
[0029]
On the other hand, the twin rotary compression mechanism 3 holds the upper and lower surfaces of the partition plate 3a in FIG. 1 with a pair of upper and lower cylinders 11 and 12, and rollers 13 and 14 are eccentrically rotatable in these cylinders 11 and 12, respectively. A pair of upper and lower suction pipes 16a and 16b connected to an accumulator 15 are connected to the suction ports in the cylinders 11 and 12, respectively.
[0030]
Also, the axially open ends (upper and lower ends in FIG. 1) of both cylinders 11 and 12 are hermetically sealed by a pair of upper and lower main bearings 17 and sub-bearings 18, and the rotary shaft 7 is sealed by these main and sub-bearings 17 and 18. Is supported rotatably. A pair of upper and lower crank portions 7a and 7b of the rotary shaft 7 are fitted into the rollers 13 and 14 so as to be eccentrically rotatable, and the rollers 13 and 14 are moved into the cylinders 11 and 12 by the eccentric rotation of the crank portions 7a and 7b. The cylinder 11 and 12 are eccentrically rotated while rolling, and the refrigerant in the cylinders 11 and 12 is compressed and discharged from the discharge port 19 into the sealed case 2 once.
[0031]
As shown in FIG. 1, an annular first terminal plate 20 made of an electrical insulator having a slightly smaller diameter is placed and fixed concentrically on the annular stator 6.
[0032]
As shown in FIG. 3, the first terminal board 20 is formed on one surface (the lower surface in FIGS. 1 and 2) of the main body 20 a that is formed in an annular shape by the electrical insulator and has a rectangular shape in the axial direction. A plurality of protruding stoppers 21 are integrally projected at a predetermined interval in the circumferential direction. In addition, at one end of the annular main body 20a (the right end in FIGS. 1 and 3), a plurality of conductive pins 22 are implanted so as to penetrate in the plate thickness direction, and the upper and lower ends protrude in the vertical direction. The lower protruding end portion is configured to be electrically connected to a power supply pin (not shown) of the winding of the stator 6, while the upper protruding end portion 22 a of these conductive pins 22 is detachably attached to the lower connector 23 a of the lead wire 23. And it is designed to be electrically connected.
[0033]
The lead wire 23 is provided with an upper connector 23c that is detachably and electrically connected to the sealing terminal 24 at the upper end portion in FIG.
[0034]
As shown in FIG. 1, the sealing terminal 24 is disposed on the outer surface of the upper cylindrical case 2b with a lid, and is detachably and electrically connected to a power cable connector (not shown) so as to receive power. The upper case 2b is provided with a discharge pipe 25 for discharging the refrigerant gas discharged into the sealed case 2 to an external refrigeration cycle or the like.
[0035]
As shown in FIG. 1, an oil discharge preventing plate 26 for oil separation is fixed to the upper end portion of the rotating shaft 7 in the drawing. As shown in FIG. 4, the oil discharge preventing plate 26 is formed of a circular flat plate, and a cylindrical fixed end portion 26 a fixed to the rotary shaft 7 is integrally or integrally formed.
[0036]
As shown in FIG. 1, the oil discharge prevention plate 26 is formed so that the outer peripheral portion outside the outer periphery of the cylindrical fixed end portion 26a is inclined downward toward the compression mechanism portion 3 side, and the inclination angle θ is The acute angle is set within 90 ° with respect to the central axis O of the rotating shaft 7.
[0037]
Therefore, according to this hermetic compressor 1, since the stator 6 can be directly wound as the electric motor unit 4 that drives the compression mechanism unit 3, the height of the winding coil end 10a can be reduced, For this reason, since an electric motor with less copper loss and excellent energy saving is used, the hermetic compressor 1 is also excellent in energy saving.
[0038]
Moreover, since the coil end 10a and the lead wire 23 connected to the sealing terminal 24 are connected via the first terminal plate 20 made of an annular insulator, the first terminal plate 20 is rotated with oil that rotates. By arranging the lead wire 23 away from the prevention plate 26, it is possible to prevent the lead wire 23 from coming into contact with the oil discharge prevention plate 26 and being damaged.
[0039]
Further, since the lubricating oil is centrifuged from the oil mist refrigerant gas containing the lubricating oil by the oil discharge prevention plate 26 for oil separation and returned to the oil reservoir 2c in the sealed case 2, the hermetic compressor The amount of oil discharged from 1 to the refrigeration cycle or the like can be reduced.
[0040]
In addition, the first terminal plate 20 is arranged on the opposite side of the compression mechanism portion 3 with respect to the oil discharge preventing plate 26 at one end surface thereof, thereby separating the first terminal plate 20 from the oil discharge preventing plate 26. Therefore, it is possible to prevent the first terminal plate 20 from coming into contact with the oil discharge prevention plate 26, and the lubricating oil centrifuged by the oil discharge prevention plate 26 is sealed terminal in the first terminal plate 20. It is possible to prevent scattering at the connection portion between the coil end 10a and the coil end 10a and reducing the conductivity of the connection portion.
[0041]
Further, since the oil discharge prevention plate 26 is inclined toward the electric motor unit 4, the oil content in the refrigerant gas centrifuged by the oil discharge prevention plate 26 is improved in the efficiency of scattering and colliding with the coil end 10 a of the electric motor unit 4. be able to. As a result, the oil adhering to the coil end 10a travels along the stator 6 and falls by its own weight, returns to the oil sump 2c on the inner bottom surface of the sealed case 2, and the oil level can be stabilized.
[0042]
FIG. 5 is a longitudinal sectional view of a hermetic compressor 1A according to the second embodiment of the present invention. The hermetic compressor 1A is characterized in that the first terminal plate 20 is replaced with the second terminal plate 30 while the sealed terminal 24 is improved so as to be automatically inserted as shown in FIG.
[0043]
As shown in FIG. 6, the second terminal plate 30 is formed of a body 30 a having a square axial cross-sectional shape formed by an electric insulator and having a slightly smaller diameter than the stator 6, and a plurality of stoppers 30 b protruding downward in the figure. Are integrally projected at predetermined intervals in the circumferential direction, and a small cylindrical connection guide portion 31 projecting upward in the figure is integrally projected on one end portion of the main body 30a. .
[0044]
As shown in FIG. 7, the connection guide portion 31 has socket holes 31a that are detachably and electrically connected by inserting a plurality of terminal pin inner end portions 24b of the sealing terminal 24 protruding inward of the upper case 2b. It is drilled. Each of these socket holes 31a forms a tapered surface 31b that expands outward at the opening tip portion to guide the insertion of each terminal pin inner end portion 24b. The lower end surface is electrically connected to a power supply pin (not shown) of each winding of the stator 6. Moreover, the upper end surface 31c in FIG. 7 of the connection guide part 31 is formed in the guide surface of the inclined surface which fits the inclination inner end surface 24c of the sealing terminal 24 inside the upper case 2b.
[0045]
Then, as shown by an arrow in FIG. 7, the inner end 24b of each terminal pin 24a of the sealing terminal 24 is inclined downward from the upper case 2b so that the upper case 2b can be automatically inserted into the upper end of the opening of the main case 2a. A required angle θa is bent with respect to the outer end 24d erected substantially perpendicular to the surface and is suspended substantially vertically.
[0046]
In addition, when the main body 30 a of the second terminal plate 30 is placed on the coil end 10 a of the stator 6, there is a slight distance d between each stopper 30 b and the upper end of the laminated core 8 of the stator 6. After that, when the second terminal plate 30 sinks due to elastic deformation of the coil end 10a, each stopper 30b comes into contact with the upper end of the laminated core 8 of the stator 6 and this second. The load of the terminal plate 30 can be supported by the laminated iron core 8 via a plurality of stoppers 30b.
[0047]
According to the hermetic compressor 1A, when the upper case 2b is automatically inserted into the main case 2a, the terminal pin of the sealed terminal 24 or the power supply unit (not shown) of the stator 6 is connected to the connection guide 31 of the second terminal plate 30. Since the tip of the pin hits and the connection direction is guided by the tapered surface 31b of the connection guide 31 and inserted into each socket hole 31, the error in the automatic insertion position of the case 2b can be eliminated. Accordingly, automatic insertion assembly is possible in which the sealing terminal 24 of the upper case 2b can be automatically connected to the second terminal plate 30 by automatic insertion of the upper case 2b into the main case 2a. Both the lead wire 23 and its mounting work can be omitted.
[0048]
Further, when the second terminal plate 30 is installed at a predetermined position in the main case 2a, each stopper 30b of the second terminal plate 30 comes into contact with the end surface of the stator 6 in the axial direction of the laminated core 8 and the like. Since the load of the terminal plate 30 is supported by the stator 6, it is possible to prevent the load of the second terminal plate 30 from being applied to the coil end 10a and being excessively stressed.
[0049]
FIG. 8 is a schematic longitudinal sectional view of a hermetic compressor 1B according to the third embodiment of the present invention. The hermetic compressor 1B is provided with a compression mechanism part 3 above the inside of the hermetic case 2, while an electric motor part 4 for driving the compression mechanism part 3 is arranged below the compression mechanism part 3, while The main feature is that a sealing terminal 24 is provided on the side surface of the case 2 b and a third terminal plate 40 is provided between the electric motor unit 4 and the compression mechanism unit 3.
[0050]
As shown in FIG. 9, the third terminal plate 40 is formed of a body 40 a having a square axial cross-sectional shape formed in an annular shape having a slightly smaller diameter than the stator 6 by an electrical insulator, and a plurality of stoppers 40 b protruding downward in the figure. Are projected at predetermined intervals in the circumferential direction, and a plurality of electrical connection terminals 40c electrically connected to power supply pins (not shown) of the respective windings such as the three phases of the stator 6 are projected downward in the figure. It is protruding.
[0051]
And the 3rd terminal board 40 has integrally formed the square-plate-shaped engaging part 41 on the side surface of the one end part of the main body 40a. As shown in FIG. 10, the engaging portion 41 has a plurality of socket holes 41 a in which the inner end portions 24 b of the terminal pins 24 a of the sealing terminal 24 are detachably fitted on the outer surface thereof. It is provided corresponding to the arrangement of. For example, a guide groove 41b having a semicircular cross section is formed in each socket hole 41a to guide insertion of the terminal pin inner end 24b. Each of these guide grooves 41b is formed from each socket hole 41a to the lower end of the engaging portion 41 and opens at the lower end.
[0052]
Therefore, when the third terminal plate 40 is gradually inserted from the upper side in FIG. 8 into the main case 2a in which the sealing terminal 24 is already attached to the side surface as shown in FIG. First, the inner end portion 24b of the terminal pin 24a is inserted from the lower end opening in FIGS. 9 and 10 of each guide groove 41b of the engaging portion 41 of the third terminal plate 40 from a right angle direction. When the terminal 40 is guided by being dropped downward in the drawing and each terminal pin inner end 24b is guided and inserted into each socket hole 41a, the engagement portion 41 is engaged by almost the entire elastic restoring force. The outer surface of the portion 41 returns to the inner end surface side of the sealing terminal 24 and anastomoses. Thereby, each terminal pin 24 a of the sealing terminal 24 is electrically connected to each socket hole 41 a of the third terminal plate 40.
[0053]
FIG. 11 is an external perspective view of the fourth terminal board 50. The fourth terminal board 50 is formed of a body 50a having a square axial cross-sectional shape formed in an annular shape having a slightly smaller diameter than the stator 6 by an electrical insulator, and a plurality of stoppers 50b protruding downward in the figure are predetermined in the circumferential direction. The plurality of electrical connection terminals 50c that are electrically connected to power supply pins (not shown) of the three-phase windings of the stator 6 are provided so as to protrude downward in the figure. .
[0054]
And the 4th terminal board 50 has integrally linked the square-plate-shaped engaging part 51 via the narrow part 52 narrower than this on the one end part of the main body 50a. The engaging portion 51 is provided on the outer surface thereof with a plurality of socket holes 53 into which the inner end portions 24b of the terminal pins 24a of the sealing terminal 24 are fitted in correspondence to the arrangement of the terminal pins 24a. Then, as shown in FIG. 12, a tapered hole 53a that widens toward the front is formed at the opening tip of each socket hole 53 so as to guide the insertion of the terminal pin inner end 24b. Conductive sleeves 53b, which are detachably inserted into the terminal pins 24a and electrically connected thereto, are disposed behind the respective taper holes 53a. The conductive sleeves 53b are electrically connected to each other through the conductors 53c. Each electrical connection terminal 50c is electrically connected.
[0055]
Therefore, as shown in FIG. 8, when the fourth terminal plate 50 is gradually inserted from the upper opening end in FIG. 8 of the main case 2a into the main case 2a in which the sealing terminal 24 is already attached to the side surface. Each terminal pin inner end 24b of the sealing terminal 24 first contacts the outer surface of the engaging portion 51 of the fourth terminal plate 50 and presses the engaging portion 51 inward. For this reason, the constricted part 52 is elastically deformed and the engaging part 51 is inclined inwardly. Thereafter, when the fourth terminal plate 50 is further pushed downward in the figure, each terminal pin inner end 24 b is inserted into the taper hole 52 a of each socket hole 53. Then, the entire engaging portion 52 is returned outward by the elastic restoring force of the constricted portion 52, and is guided and inserted into each conductive sleeve 53b. Thereby, each terminal pin 24 of the sealing terminal 24 is electrically connected to each socket hole 53 of the fourth terminal plate 50.
[0056]
Therefore, the fourth terminal plate 50 can also be applied to the hermetic compressor 1B in which the hermetic terminal 24 is provided on the side surface of the hermetic case 2.
[0057]
【The invention's effect】
As described above, according to the present invention, the winding coil end height can be reduced because the stator can be directly wound as the motor part for driving the compression mechanism part, and therefore the copper loss is reduced. Since an electric motor that is small and excellent in energy saving is used, it is excellent in energy saving as a hermetic compressor.
[0058]
In addition, since the end of the stator winding and the lead wire connected to the sealed terminal are connected via a terminal plate made of an annular insulator, the terminal plate is arranged away from the rotating oil discharge prevention plate. Thus, it is possible to prevent the lead wire from coming into contact with the oil discharge prevention plate and being damaged.
[0059]
Furthermore, the lubricating oil is centrifuged from the oil mist refrigerant gas containing the lubricating oil by the oil discharge prevention plate for oil separation and returned to the oil reservoir in the hermetic case, so that the refrigeration cycle from the hermetic compressor The amount of discharged oil can be reduced.
[0060]
And the terminal plate is separated from the oil discharge prevention plate by placing one end face of the terminal plate on the opposite side of the compression mechanism part from the oil discharge prevention plate, so that the terminal plate contacts the oil discharge prevention plate. In addition, the lubricating oil centrifugally separated by the oil discharge prevention plate is scattered at the connection between the sealing terminal of the terminal plate and the end of the stator winding, and the conductivity of the connection is Can be prevented from being reduced.
[0061]
Further, since the oil discharge prevention plate is inclined toward the compression mechanism section, the oil in the refrigerant gas centrifuged by the oil discharge prevention plate is scattered at the stator winding end of the motor section on the compression mechanism section side. The collision efficiency can be improved. As a result, the oil adhering to the end of the stator windings travels along the stator and falls by its own weight, returns to the oil reservoir on the inner bottom surface of the sealed case, and can stabilize the oil level.
[0062]
For example, when the motor part and the terminal plate are installed at a predetermined position in the bottomed cylindrical main case of the sealed case, the upper part of the sealed case is installed at a predetermined position of the upper (lid) case. When the case is automatically inserted into the main case, the connection guide of the terminal plate contacts the tip of the sealing terminal pin or the feed pin of the stator, and the connection direction is guided by the connection guide. Position errors can be eliminated. Therefore, automatic insertion assembly that allows the upper case sealing terminal to be automatically connected to the terminal plate by automatic insertion of the upper case into the main case becomes possible, and the lead wire connected to the sealing terminal and its mounting work And can be omitted together.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a hermetic compressor according to a first embodiment of the present invention.
FIG. 2 is an end view of the II-II line cutting portion of FIG.
3 is an exploded perspective view of the lead wire and the first terminal board shown in FIG. 1. FIG.
4 is an exploded perspective view of the oil discharge preventing plate shown in FIG. 1. FIG.
FIG. 5 is a longitudinal sectional view of a hermetic compressor according to a second embodiment of the present invention.
6 is an external perspective view of a second terminal board shown in FIG. 5. FIG.
7 is a partial longitudinal sectional view showing a fitting state between the terminal pin of the sealed terminal shown in FIG. 5 and the socket hole of the second terminal plate shown in FIG. 6;
FIG. 8 is a longitudinal sectional view of a hermetic compressor according to a third embodiment of the present invention.
9 is an external perspective view of the third terminal board shown in FIG. 8. FIG.
10 is a view taken in the direction of arrow X in FIG. 9;
FIG. 11 is an external perspective view of a fourth terminal board of the present invention.
12 is a longitudinal sectional view of a socket hole of the fourth terminal board shown in FIG.
[Explanation of symbols]
1, 1A, 1B Sealed compressor 2 Sealed case 2a Sealed case upper case 2b Sealed case main case 2c Oil sump 3 Compression mechanism section 4 Motor section 5 Rotor 6 Stator 7 Rotating shaft 9 Magnetic pole teeth 10 Windings 11, 12 Cylinders 13 and 14 Roller 20 First terminal board 20a First terminal board main body 21 First terminal board stopper 22 Conductive pin 23 Lead wire 24 Sealed terminal 26 Oil discharge prevention board 30 Second terminal board 30a First 2 terminal board body 30b second terminal board stopper 31 connection guide part 31a socket hole 31b taper surface 40 third terminal board 40a third terminal board body 40b third terminal board stopper 41 engaging part 41a Socket hole 50 4th terminal board 50a 4th terminal board main body 50b 4th terminal board stopper 50c Electrical connection terminal 51 Locking part 52a Taper hole 53 Soke DOO hole 53b conductive sleeve 53c conductor

Claims (1)

永久磁石および回転軸を有する回転子、および12個以下の磁極歯を有し、これら各磁極歯に巻線を集中巻した固定子とからなる電動機部と、
上記回転軸により駆動される圧縮機構部と、
上記圧縮機構部を下部に収容するとともに上記電動機部を上部に収容する一方、上面に密封端子を固着した密閉ケーシングと、
上記回転子またはその回転軸に固定されて設けられ、中央部周辺が上記固定子の巻線コイルエンド上面より上方に位置し、外周部が上記固定子の巻線コイルエンド上面より下方に位置する油分離用の吐油防止板と、
を備えた密閉型圧縮機において、
上記固定子の巻線の端部を環状絶縁体からなる端子板及び口出線を介して上記密封端子に接続すると共に、上記端子板の一端面を、上記吐油防止板よりも上記圧縮機構部の反対側に位置させるとともに、上記口出線の端子板からの立上り部を端子板の上記一端面側に配置したことを特徴とする密閉型圧縮機。
An electric motor unit comprising a rotor having a permanent magnet and a rotating shaft, and a stator having twelve or less magnetic pole teeth and concentrated windings around the magnetic pole teeth;
A compression mechanism driven by the rotating shaft;
A sealed casing having the compression mechanism portion accommodated in the lower portion and the electric motor portion accommodated in the upper portion, and a sealing terminal fixed to the upper surface,
The rotor is fixed to the rotating shaft of the rotor or the rotating shaft thereof, and the periphery of the central portion is located above the upper surface of the winding coil end of the stator, and the outer peripheral portion is located below the upper surface of the winding coil end of the stator. An oil discharge prevention plate for oil separation;
In a hermetic compressor with
The end of the winding of the stator is connected to the sealing terminal via a terminal plate made of an annular insulator and a lead wire, and one end surface of the terminal plate is connected to the compression mechanism rather than the oil discharge prevention plate. A hermetic compressor characterized in that the rising portion of the lead wire from the terminal plate is disposed on the one end face side of the terminal plate.
JP2000294828A 2000-09-27 2000-09-27 Hermetic compressor Expired - Fee Related JP4443749B2 (en)

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Cited By (1)

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CN106884797A (en) * 2015-12-15 2017-06-23 上海日立电器有限公司 Compressor and its wiring mechanism

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CN100379996C (en) * 2002-12-30 2008-04-09 大金工业株式会社 Closed compressor
JP4799180B2 (en) * 2006-01-05 2011-10-26 サンデン株式会社 Electric compressor
JP2009216025A (en) * 2008-03-12 2009-09-24 Panasonic Corp Hermetic compressor
JP5669586B2 (en) * 2011-01-07 2015-02-12 三菱重工業株式会社 Compressor motor and electric compressor using the same
CN103982427B (en) * 2014-05-19 2016-01-06 广东美芝精密制造有限公司 Compressor
JP6601246B2 (en) 2016-02-08 2019-11-06 株式会社豊田自動織機 Electric compressor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106884797A (en) * 2015-12-15 2017-06-23 上海日立电器有限公司 Compressor and its wiring mechanism
CN106884797B (en) * 2015-12-15 2019-11-26 上海海立新能源技术有限公司 Compressor and its wiring mechanism

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