JPH0727073A - Sealed compressor - Google Patents
Sealed compressorInfo
- Publication number
- JPH0727073A JPH0727073A JP17011393A JP17011393A JPH0727073A JP H0727073 A JPH0727073 A JP H0727073A JP 17011393 A JP17011393 A JP 17011393A JP 17011393 A JP17011393 A JP 17011393A JP H0727073 A JPH0727073 A JP H0727073A
- Authority
- JP
- Japan
- Prior art keywords
- crankshaft
- bearing
- supporting
- electric motor
- auxiliary bearing
- 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.)
- Granted
Links
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、冷凍空調用等の冷媒圧
縮機あるいは空気圧縮機として用いられる密閉型の電動
圧縮機に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hermetic electric compressor used as a refrigerant compressor or an air compressor for refrigeration and air conditioning.
【０００２】[0002]
【従来の技術】従来、この種の圧縮機は、図４に示すよ
うに、密閉容器１０１の内部に圧縮機構１０２を駆動す
る電動機１０３の固定子１０４が固定され、この電動機
１０３の回転子１０５に圧縮機構１０２を駆動するクラ
ンク軸１０６が結合され、このクランク軸１０６の回転
軸はほぼ水平に配置されている。また密閉容器１０１の
下部が潤滑油溜１０７となっている。2. Description of the Related Art Conventionally, in a compressor of this type, as shown in FIG. 4, a stator 104 of an electric motor 103 for driving a compression mechanism 102 is fixed inside a sealed container 101, and a rotor 105 of the electric motor 103 is fixed. A crankshaft 106 that drives the compression mechanism 102 is coupled to the crankshaft 106, and the rotation shaft of the crankshaft 106 is arranged substantially horizontally. Further, the lower part of the closed container 101 is a lubricating oil reservoir 107.
【０００３】前記クランク軸１０６はその主軸１０８を
支承する主軸受１０９を有する主軸受部材１１０と、主
軸とは反対側のクランク軸１０６の端部を支承する転が
り形の副軸受１１１で支持されており、副軸受１１１の
内輪は、隣接して固定されたもう一つの補助軸受１１２
の内輪との間に配設された弾性部材１１３により予圧を
受けている。The crankshaft 106 is supported by a main bearing member 110 having a main bearing 109 for supporting the main shaft 108, and a rolling type auxiliary bearing 111 for supporting the end of the crankshaft 106 on the side opposite to the main shaft. And the inner ring of the auxiliary bearing 111 has another auxiliary bearing 112 fixed adjacently.
The elastic member 113 arranged between the inner ring and the inner ring receives the preload.
【０００４】圧縮機の吸入管１１４から吸入した冷媒気
体は、圧縮機構１０２の吸入口１１５から入り、圧縮さ
れ、吐出口１１６から電動機側方通路１１７を経て、吐
出室１１８から吐出管１１９を通り圧縮機の外に吐出さ
れる。The refrigerant gas sucked from the suction pipe 114 of the compressor enters through the suction port 115 of the compression mechanism 102, is compressed, passes from the discharge port 116 through the electric motor side passage 117, and passes from the discharge chamber 118 through the discharge pipe 119. Discharged outside the compressor.
【０００５】[0005]
【発明が解決しようとする課題】上に述べた従来例の圧
縮機は、クランク軸１０６を両端で支持して回転子１０
５を保持する構造にしている為主軸受１０９にはほとん
どモーメントがかからず、更にクランク軸１０６を曲げ
ようとするモーメントも小さく信頼性が向上できる。In the conventional compressor described above, the rotor 10 is supported by supporting the crankshaft 106 at both ends.
Since the structure for holding 5 is applied, almost no moment is applied to the main bearing 109, and the moment to bend the crankshaft 106 is small, so that the reliability can be improved.
【０００６】しかし、転がり形の軸受を並列して使用す
ると、クランク軸の軸方向の移動量が大きく運転中に振
動する為、騒音・振動が大きく、更にクランク軸の傾き
による回転方向の調芯機能が低下する上、コストが高く
なるという問題があった。However, when rolling type bearings are used in parallel, a large amount of movement of the crankshaft in the axial direction vibrates during operation, resulting in large noise and vibration, and further, centering in the rotational direction due to the inclination of the crankshaft. There is a problem that the function is deteriorated and the cost is increased.
【０００７】本発明は上記の課題に鑑み、スクロール圧
縮機の振動、騒音特性および副軸受の調芯機能の改善を
図ることを目的とするものである。In view of the above problems, it is an object of the present invention to improve the vibration and noise characteristics of the scroll compressor and the centering function of the auxiliary bearing.
【０００８】また、本発明は、クランク軸の軸方向の挙
動により生じる振動・騒音を防止し、さらなる振動・騒
音特性の改善を図ることを目的とするものである。Another object of the present invention is to prevent vibration and noise caused by the behavior of the crankshaft in the axial direction and to further improve the vibration and noise characteristics.
【０００９】[0009]
【課題を解決するための手段】上記課題を解決するため
の第１の手段として、密閉容器の内部に、電動機と、こ
の電動機で駆動する圧縮機構を配設し、前記圧縮機構を
駆動させるクランク軸と、このクランク軸に形成した主
軸を支承する主軸受をすべり軸受とし、前記クランク軸
の主軸とは反対側の端部を支承する副軸受を転がり形の
ラジアル軸受とし、前記密閉容器の内壁に固定した隔壁
部材に前記副軸受を配設固定し、これと隣接させて、前
記クランク軸に固定部材（止め輪）により反主軸方向の
動きを規制された支持部材（ワッシャ）を設け、これら
副軸受内輪と支持部材との間に弾性部材を配設して内輪
に弾性力を付与させることである。課題を解決するため
の第２の手段は、前記の第１の解決手段に加えて前記ク
ランク軸の副軸受側にスラスト受部を設け、副軸受内輪
の弾性部材接触部からクランク軸のスラスト受部材迄の
距離と、支持部材（ワッシャ）から前記スラスト受部材
迄の距離を一定にすることにより、弾性部材のたわみ量
を一定量にすることである。課題を解決するための第３
の手段は、密閉容器の内部に、電動機と、この電動機で
駆動する圧縮機構を配設し、前記圧縮機構を駆動させる
クランク軸と、このクランク軸に形成した主軸を支承す
る主軸受をすべり軸受とし、前記クランク軸の主軸とは
反対側の端部を支承する副軸受を転がり形のラジアル軸
受とし、前記密閉容器の内壁に固定した隔壁部材に前記
副軸受を配設固定し、これと隣接させて、前記クランク
軸に固定部材（止め輪）により反主軸方向の動きを規制
された支持部材（ワッシャ）を設け、これら副軸受内輪
と支持部材との間に弾性部材を配設して内輪に弾性力を
付与させ、前記電動機の回転子の軸方向の中心と固定子
の軸方向の中心をずらすことである。As a first means for solving the above problems, an electric motor and a compression mechanism driven by the electric motor are provided inside a closed container, and a crank for driving the compression mechanism is provided. The shaft and the main bearing that supports the main shaft formed on the crankshaft are sliding bearings, and the sub bearing that supports the end of the crankshaft opposite to the main shaft is a rolling radial bearing, and the inner wall of the hermetic container is The sub-bearing is arranged and fixed to the partition wall member that is fixed to the crankshaft, and a supporting member (washer) whose movement in the anti-main-axis direction is restricted by a fixing member (retaining ring) is provided on the crankshaft so as to be adjacent thereto. An elastic member is arranged between the inner ring of the auxiliary bearing and the support member to apply an elastic force to the inner ring. A second means for solving the problem is, in addition to the above-described first means, providing a thrust receiving portion on the sub-bearing side of the crankshaft so that the thrust receiving portion of the crankshaft is received from the elastic member contact portion of the inner ring of the sub-bearing. By making the distance to the member and the distance from the support member (washer) to the thrust receiving member constant, the amount of deflection of the elastic member is made constant. Third to solve the problem
The means is a sliding bearing, in which an electric motor and a compression mechanism driven by the electric motor are provided inside a closed container, and a crankshaft for driving the compression mechanism and a main bearing for supporting a main shaft formed on the crankshaft. The sub-bearing supporting the end portion of the crankshaft opposite to the main shaft is a rolling radial bearing, and the sub-bearing is arranged and fixed on a partition wall member fixed to the inner wall of the hermetically sealed container. The crankshaft is provided with a supporting member (washer) whose movement in the direction opposite to the main axis is restricted by a fixing member (retaining ring), and an elastic member is disposed between the inner ring of the auxiliary bearing and the supporting member. By applying an elastic force to the center of the rotor of the electric motor and the center of the stator in the axial direction.
【００１０】[0010]
【作用】上に述べた本発明の第１の手段の作用は、弾性
部品の弾性力を予圧として転がり形の副軸受の内輪、お
よびクランク軸に作用させることにより、軸系の軸方向
の振動および共振による副軸受から発生する異音等を防
止すると同時に、クランク軸の軸方向の振動により発生
する異音・振動を防止することができる。また、副軸受
の内輪規制部材を従来の密閉容器固定の転がり軸受から
クランク軸固定の支持部材（ワッシャ）に変更すること
により、副軸受の調芯機能が向上される為組立の際に発
生する両軸受の軸芯ずれ等の問題点を回避することがで
き、また従来の転がり軸受の内輪間のすべりにより弾性
部材に発生する摩耗をなくすことができる。本発明の第
２の手段の作用は、前記クランク軸の副軸受側にスラス
ト受部を設け、副軸受からクランク軸のスラスト受部材
迄の距離と、支持部材（ワッシャ）からスラスト受部材
迄の距離を一定にすることにより、弾性部材のたわみ量
を一定量にすることにより弾性部材の破損の防止と常に
安定した予圧を副軸受の内輪およびクランク軸に作用さ
せることができる。本発明の第３の手段の作用は、電動
機の回転子の軸方向の中心と固定子の軸方向の中心をず
らすことにより、副軸受内輪の予圧を変化させることな
く、クランク軸の弾性部材より受ける軸力を磁気吸引力
により緩和させて、クランク軸のスラスト部とスラスト
軸受部材の間に発生する摩耗の低減および摩擦による損
失を低減することができる。The action of the first means of the present invention described above is that the elastic force of the elastic component acts as a preload on the inner ring of the rolling-type auxiliary bearing and on the crankshaft to cause axial vibration of the shaft system. Moreover, it is possible to prevent abnormal noise and the like generated from the auxiliary bearing due to resonance, and at the same time, to prevent abnormal noise and vibration caused by the axial vibration of the crankshaft. Also, by changing the inner ring restricting member of the auxiliary bearing from the conventional rolling bearing fixed to the closed container to a supporting member (washer) fixed to the crankshaft, the centering function of the auxiliary bearing is improved, which occurs during assembly. It is possible to avoid problems such as shaft misalignment of both bearings, and it is possible to eliminate wear generated in the elastic member due to slippage between the inner rings of the conventional rolling bearing. The operation of the second means of the present invention is to provide a thrust receiving portion on the side of the auxiliary bearing of the crankshaft, and to measure the distance from the auxiliary bearing to the thrust receiving member of the crankshaft and the distance from the support member (washer) to the thrust receiving member. By keeping the distance constant, it is possible to prevent the elastic member from being damaged and to always exert a stable preload on the inner ring and the crankshaft of the auxiliary bearing by keeping the amount of deflection of the elastic member constant. The operation of the third means of the present invention is to shift the axial center of the rotor of the electric motor from the axial center of the stator, thereby changing the preload of the inner ring of the auxiliary bearing without changing the preload of the crankshaft. It is possible to reduce the axial force that is received by the magnetic attraction force, and reduce the wear and friction loss that occur between the thrust portion of the crankshaft and the thrust bearing member.
【００１１】[0011]
【実施例】以下、本発明の実施例のスクロール圧縮機に
ついて、図面を参照しながら説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS A scroll compressor according to an embodiment of the present invention will be described below with reference to the drawings.
【００１２】まず、図１により、本発明の第１の実施例
について説明する。同図において、密閉容器１の内部に
圧縮機構２を駆動する電動機３の固定子４が固定され、
この電動機３の回転子５に圧縮機構２を駆動するクラン
ク軸６が結合され、このクランク軸６の回転軸はほぼ水
平に配置されている。また密閉容器１の下部が潤滑油溜
７となっている。First, a first embodiment of the present invention will be described with reference to FIG. In the figure, the stator 4 of the electric motor 3 for driving the compression mechanism 2 is fixed inside the closed container 1,
A crankshaft 6 that drives the compression mechanism 2 is coupled to the rotor 5 of the electric motor 3, and the rotation shaft of the crankshaft 6 is arranged substantially horizontally. The lower part of the closed container 1 is a lubricating oil reservoir 7.
【００１３】前記クランク軸６はその主軸８を支承する
主軸受９を有する主軸受部材１０と、主軸８とは反対側
のクランク軸６の端部を支承する副軸受（転がり形のラ
ジアル軸受）１２を有する隔壁部材１１で支持されてい
る。この隔壁部材１１は前記密閉容器１の内壁に固定さ
れており、前記クランク軸６で駆動される潤滑油ポンプ
１７が係合されている。また、前記副軸受１２に隣接し
て前記クランク軸６に固定部材（止め輪）１３により反
主軸方向の動きを規制された支持部材（ワッシャ）１４
が配設されている。前記副軸受１２の内輪と支持部材１
４の間には金属波形ワッシャ（弾性部材）１５が配設さ
れ、これら副軸受１２と支持部材１４により前記金属波
形ワッシャ１５に弾性力をもたせている。The crankshaft 6 has a main bearing member 10 having a main bearing 9 for supporting the main shaft 8 thereof, and a sub-bearing (rolling radial bearing) for supporting an end portion of the crankshaft 6 opposite to the main shaft 8. It is supported by a partition member 11 having 12. The partition member 11 is fixed to the inner wall of the closed container 1, and a lubricating oil pump 17 driven by the crankshaft 6 is engaged with the partition member 11. Further, a supporting member (washer) 14 adjacent to the sub bearing 12 and fixed to the crankshaft 6 by a fixing member (retaining ring) 13 so as to prevent movement in the opposite main axis direction.
Is provided. Inner ring of the auxiliary bearing 12 and support member 1
A metal corrugated washer (elastic member) 15 is disposed between the metal corrugations 4 and 4, and the metal corrugated washer 15 has an elastic force by the auxiliary bearing 12 and the support member 14.
【００１４】圧縮機の吸入管１８から吸入した冷媒気体
は、圧縮機構２に入り、圧縮され、吐出口１９から電動
機側方通路２０を経て、吐出室２１から吐出管２２を通
り圧縮機の外に吐出される。The refrigerant gas sucked from the suction pipe 18 of the compressor enters the compression mechanism 2, is compressed, passes from the discharge port 19 to the electric motor side passage 20, and from the discharge chamber 21 to the discharge pipe 22 outside the compressor. Is discharged.
【００１５】上記構成において、副軸受１２内輪と支持
部材１４に金属波形ワッシャ（弾性部品）１５の弾性力
が予圧として作用するので、軸系の軸方向の振動および
共振による副軸受から発生する異音等を防止すると同時
に、クランク軸６の軸方向の振動により発生する異音・
振動を防止することができる。また、副軸受の内輪規制
部材を従来の密閉容器固定の転がり軸受からクランク軸
固定の支持部材（ワッシャ）１４に変更することによ
り、副軸受１２の調芯機能が向上される為組立の際に発
生する両軸受の軸芯ずれ等の問題点を回避することがで
き、また従来の転がり軸受の内輪間のすべりにより金属
波形ワッシャ（弾性部品）１５に発生する摩耗をなくす
ことができる。In the above structure, since the elastic force of the metal corrugated washer (elastic component) 15 acts on the inner ring of the sub bearing 12 and the support member 14 as a preload, a difference generated from the sub bearing due to axial vibration and resonance of the shaft system. While preventing noise, abnormal noise generated due to axial vibration of the crankshaft 6
Vibration can be prevented. Further, by changing the inner ring restricting member of the auxiliary bearing from the conventional rolling bearing fixed to the closed container to the supporting member (washer) 14 fixed to the crankshaft, the centering function of the auxiliary bearing 12 is improved, so that the auxiliary bearing 12 can be easily assembled. It is possible to avoid problems such as shaft misalignment of both bearings that occur, and to eliminate wear that occurs in the metal corrugated washer (elastic component) 15 due to slippage between the inner rings of the conventional rolling bearing.
【００１６】次に、図２により、本発明の第２の実施例
について説明する。ここで、先の実施例と同一のものに
ついては、同一の符号を付して説明を省略する。Next, a second embodiment of the present invention will be described with reference to FIG. Here, the same components as those in the previous embodiment are designated by the same reference numerals and the description thereof will be omitted.
【００１７】同図において、第１の実施例の構成に加え
て、副軸受１２からクランク軸のスラスト受部材１６迄
の距離Ａと、支持部材（ワッシャ）１４から前記スラス
ト受部材１６迄の距離Ｂを一定にすることにより、弾性
部材１５のたわみ量Ｃを一定量することにより弾性部材
の破損の防止と常に安定した予圧を副軸受１２の内輪お
よびクランク軸６に作用させることができる。In the figure, in addition to the structure of the first embodiment, the distance A from the auxiliary bearing 12 to the thrust receiving member 16 of the crankshaft and the distance from the supporting member (washer) 14 to the thrust receiving member 16 are shown. By keeping B constant, the amount of flexure C of the elastic member 15 can be kept constant, whereby damage to the elastic member can be prevented and a stable preload can always be applied to the inner ring of the auxiliary bearing 12 and the crankshaft 6.
【００１８】さらに、図３により、本発明の第３の実施
例について説明する。ここで、先の実施例と同一のもの
については、同一の符号を付して説明を省略する。A third embodiment of the present invention will be described with reference to FIG. Here, the same components as those in the previous embodiment are designated by the same reference numerals and the description thereof will be omitted.
【００１９】同図において、電動機の回転子５の軸方向
の中心と固定子４の軸方向の中心をずらして配設させて
いる。In the figure, the axial center of the rotor 5 and the axial center of the stator 4 of the electric motor are displaced from each other.
【００２０】上記構成において、副軸受１２内輪の予圧
を変化させることなく、クランク軸６の弾性部品１５よ
り受ける軸力を磁気吸引力により緩和させて、クランク
軸のスラスト部スラスト軸受部材１６の間に発生する摩
耗の低減および摩擦による損失を低減することができ
る。In the above structure, the axial force received from the elastic component 15 of the crankshaft 6 is alleviated by the magnetic attraction force without changing the preload of the inner ring of the auxiliary bearing 12, and the thrust bearing member 16 between the thrust portion of the crankshaft is It is possible to reduce wear generated in the machine and loss due to friction.
【００２１】[0021]
【発明の効果】上記実施例より明らかなように本発明の
請求項１に係わる効果は、スクロール圧縮機のクランク
軸の両端支持構造において、圧縮機構と反対側のクラン
ク軸端部の支承に転がり形の副軸受を用いても、弾性部
品の弾性力を予圧として転がり形の副軸受の内輪、およ
びクランク軸に作用させることにより、軸系の軸方向の
振動および共振による副軸受から発生する異音等を防止
すると同時に、クランク軸の軸方向の振動により発生す
る異音・振動を防止することができる。また、副軸受の
内輪規制部材を従来の密閉容器固定の転がり軸受からク
ランク軸固定の支持部材（ワッシャ）に変更することに
より副軸受の調芯機能が向上される為組立の際に発生す
る両軸受の軸芯ずれ等の問題点を回避することができ、
また従来の転がり軸受の内輪間のすべりにより弾性部材
に発生する摩耗をなくすことができる。本発明の請求項
２に係わる効果は、請求項１に係わる効果に加えて、副
軸受からクランク軸のスラスト受部材迄の距離と、支持
部材（ワッシャ）から前記スラスト受部材迄の距離を一
定にすることにより、弾性部材のたわみ量を一定にする
ことにより弾性部材の破損の防止と常に安定した予圧を
副軸受の内輪およびクランク軸に作用させることができ
る。本発明の請求項３に係わる効果は、電動機の回転子
の軸方向の中心と固定子の軸方向の中心をずらすことに
より、副軸受内輪の予圧を変化させることなく、クラン
ク軸の弾性部材より受ける軸力を磁気吸引力により緩和
させて、クランク軸のスラスト部とスラスト軸受部材の
間に発生する摩耗の低減および摩擦による損失を低減す
ることができる。As is apparent from the above-described embodiment, the effect according to claim 1 of the present invention is that the structure of supporting both ends of the crankshaft of the scroll compressor is supported by the bearing of the crankshaft end opposite to the compression mechanism. Even if a sub-bearing of the shape is used, the elastic force of the elastic component acts as a preload on the inner ring of the rolling-type sub-bearing and on the crankshaft, and the vibration generated in the sub-bearing due to axial vibration and resonance of the shaft system It is possible to prevent noise and the like, and at the same time, to prevent abnormal noise and vibration caused by vibration of the crankshaft in the axial direction. Also, by changing the inner ring restricting member of the auxiliary bearing from the conventional rolling bearing fixed to the closed container to a supporting member (washer) fixed to the crankshaft, the centering function of the auxiliary bearing is improved, so that both It is possible to avoid problems such as shaft misalignment of the bearing,
Further, it is possible to eliminate the wear generated in the elastic member due to the slip between the inner rings of the conventional rolling bearing. The effect of claim 2 of the present invention is, in addition to the effect of claim 1, that the distance from the auxiliary bearing to the thrust receiving member of the crankshaft and the distance from the supporting member (washer) to the thrust receiving member are constant. By making the amount of deflection of the elastic member constant, damage to the elastic member can be prevented and a stable preload can always be applied to the inner ring and the crankshaft of the auxiliary bearing. The effect according to claim 3 of the present invention is that by shifting the axial center of the rotor of the electric motor and the axial center of the stator, the preload of the sub bearing inner ring is not changed and the elastic member of the crankshaft is It is possible to reduce the axial force that is received by the magnetic attraction force, and reduce the wear and friction loss that occur between the thrust portion of the crankshaft and the thrust bearing member.
【図１】本発明の第１の実施例を示す密閉型圧縮機の断
面図FIG. 1 is a sectional view of a hermetic compressor showing a first embodiment of the present invention.
【図２】本発明の第２の実施例を示す密閉型圧縮機の部
分断面図FIG. 2 is a partial sectional view of a hermetic compressor showing a second embodiment of the present invention.
【図３】本発明の第３の実施例を示す密閉型圧縮機の断
面図FIG. 3 is a sectional view of a hermetic compressor showing a third embodiment of the present invention.
【図４】従来の密閉型圧縮機の断面図FIG. 4 is a sectional view of a conventional hermetic compressor.
１ 密閉容器 ２ 圧縮機構 ３ 電動機 ４ 固定子 ５ 回転子 ６ クランク軸 ７ 潤滑油溜 ８ 主軸 ９ 主軸受 １０ 主軸受部材 １１ 隔壁部材 １２ 副軸受 １３ 固定部材 １４ 支持部材 １５ 弾性部材 １６ スラスト受部材 １７ 潤滑油ポンプ １８ 吸入管 １９ 吐出口 ２０ 電動機側方通路 ２１ 吐出室 ２２ 吐出管 DESCRIPTION OF SYMBOLS 1 Airtight container 2 Compression mechanism 3 Electric motor 4 Stator 5 Rotor 6 Crankshaft 7 Lubricating oil reservoir 8 Main shaft 9 Main bearing 10 Main bearing member 11 Partition member 12 Sub bearing 13 Fixing member 14 Supporting member 15 Elastic member 16 Thrust receiving member 17 Lubricating oil pump 18 Suction pipe 19 Discharge port 20 Electric motor side passage 21 Discharge chamber 22 Discharge pipe
Claims (3)
で駆動する圧縮機構を配設し、前記圧縮機構を、駆動さ
せるクランク軸とこのクランク軸に形成した主軸を支承
する主軸受をすべり軸受とし、前記クランク軸の主軸と
は反対側の端部を支承する副軸受を転がり形のラジアル
軸受とし、前記密閉容器の内壁に固定した隔壁部材に前
記副軸受を配置固定し、これと隣接させて、前記クラン
ク軸に固定部材（止め輪）により反主軸方向の動きを規
制された支持部材（ワッシャ）を設け、これら副軸受内
輪と支持部材との間に弾性部材を配設して内輪に弾性力
を付与させた密閉型圧縮機。1. An electric motor and a compression mechanism driven by the electric motor are arranged inside a closed container, and a crankshaft for driving the compression mechanism and a main bearing for supporting a main shaft formed on the crankshaft are slid. As a bearing, a sub-bearing that supports an end of the crankshaft opposite to the main shaft is a rolling radial bearing, and the sub-bearing is arranged and fixed on a partition wall member fixed to the inner wall of the hermetic container, and adjacent to this. The crankshaft is provided with a supporting member (washer) whose movement in the direction opposite to the main axis is restricted by a fixing member (retaining ring), and an elastic member is disposed between the inner ring of the auxiliary bearing and the supporting member. A hermetic compressor that gives elasticity to the.
を設け、副軸受からクランク軸のスラスト受部材迄の距
離と、支持部材（ワッシャ）から前記スラスト受部材迄
の距離を一定にすることにより、弾性部材のたわみ量を
一定量にした請求項１記載の密閉型圧縮機。2. A thrust receiving portion is provided on the side of the auxiliary bearing of the crankshaft so that the distance from the auxiliary bearing to the thrust receiving member of the crankshaft and the distance from the supporting member (washer) to the thrust receiving member are constant. The hermetic compressor according to claim 1, wherein the amount of deflection of the elastic member is kept constant.
で駆動する圧縮機構を配設し、前記圧縮機構を、駆動さ
せるクランク軸とこのクランク軸に形成した主軸を支承
する主軸受をすべり軸受とし、前記クランク軸の主軸と
は反対側の端部を支承する副軸受を転がり形のラジアル
軸受とし、前記密閉容器の内壁に固定した隔壁部材に前
記副軸受を配置固定し、これと隣接させて、前記クラン
ク軸に固定部材（止め輪）により反主軸方向の動きを規
制された支持部材（ワッシャ）を設け、これら副軸受内
輪と支持部材との間に弾性部材を配設して内輪に弾性力
を付与させ前記電動機の回転子の軸方向の中心と固定子
の軸方向の中心をずらした密閉型圧縮機。3. An electric motor and a compression mechanism driven by the electric motor are provided inside a closed container, and a crankshaft for driving the compression mechanism and a main bearing for supporting a main shaft formed on the crankshaft are slid. As a bearing, a sub-bearing that supports an end of the crankshaft opposite to the main shaft is a rolling radial bearing, and the sub-bearing is arranged and fixed on a partition wall member fixed to the inner wall of the hermetic container, and adjacent to this. The crankshaft is provided with a supporting member (washer) whose movement in the direction opposite to the main axis is restricted by a fixing member (retaining ring), and an elastic member is disposed between the inner ring of the auxiliary bearing and the supporting member. A hermetic compressor in which the axial center of the rotor of the electric motor is offset from the axial center of the stator by applying elastic force to the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17011393A JP3379156B2 (en) | 1993-07-09 | 1993-07-09 | Hermetic compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17011393A JP3379156B2 (en) | 1993-07-09 | 1993-07-09 | Hermetic compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0727073A true JPH0727073A (en) | 1995-01-27 |
| JP3379156B2 JP3379156B2 (en) | 2003-02-17 |
Family
ID=15898885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17011393A Expired - Fee Related JP3379156B2 (en) | 1993-07-09 | 1993-07-09 | Hermetic compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3379156B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6371739B1 (en) | 1999-01-22 | 2002-04-16 | Matsushita Electric Industrial Co., Ltd. | Method and apparatus for applying pre-load to the bearing structure of a drive shaft that is directly driven by an electric motor |
| WO2006001342A1 (en) * | 2004-06-28 | 2006-01-05 | Matsushita Electric Industrial Co., Ltd. | Air pump |
| US9206804B2 (en) | 2011-11-18 | 2015-12-08 | Kabushiki Kaisha Toyota Jidoshokki | Compressor for vehicle with reduced vibrations |
-
1993
- 1993-07-09 JP JP17011393A patent/JP3379156B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6371739B1 (en) | 1999-01-22 | 2002-04-16 | Matsushita Electric Industrial Co., Ltd. | Method and apparatus for applying pre-load to the bearing structure of a drive shaft that is directly driven by an electric motor |
| WO2006001342A1 (en) * | 2004-06-28 | 2006-01-05 | Matsushita Electric Industrial Co., Ltd. | Air pump |
| EP1754889A1 (en) * | 2004-06-28 | 2007-02-21 | Matsushita Electric Industrial Co., Ltd. | Air pump |
| JPWO2006001342A1 (en) * | 2004-06-28 | 2008-04-17 | 松下電器産業株式会社 | Air pump |
| US7942648B2 (en) | 2004-06-28 | 2011-05-17 | Panasonic Corporation | Air pump |
| EP1754889A4 (en) * | 2004-06-28 | 2012-03-21 | Panasonic Corp | Air pump |
| US9206804B2 (en) | 2011-11-18 | 2015-12-08 | Kabushiki Kaisha Toyota Jidoshokki | Compressor for vehicle with reduced vibrations |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3379156B2 (en) | 2003-02-17 |
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|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |