JPH08193589A - Horizontally type motor-driven compressor - Google Patents
Horizontally type motor-driven compressorInfo
- Publication number
- JPH08193589A JPH08193589A JP420895A JP420895A JPH08193589A JP H08193589 A JPH08193589 A JP H08193589A JP 420895 A JP420895 A JP 420895A JP 420895 A JP420895 A JP 420895A JP H08193589 A JPH08193589 A JP H08193589A
- Authority
- JP
- Japan
- Prior art keywords
- compression mechanism
- oil
- notches
- axial direction
- notch
- 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.)
- Pending
Links
Landscapes
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は空気調和装置等に使用さ
れる横置き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 horizontal electric compressor used in an air conditioner or the like.
【０００２】[0002]
【従来の技術】この種の従来の特許に特開平２−２７１
８６号「横置き形スクロール圧縮機」があるので、従来
例として図面とともに簡単に説明する。2. Description of the Related Art JP-A-2-271 discloses a conventional patent of this type.
Since there is No. 86 "Horizontal scroll compressor", it will be briefly described as a conventional example with reference to the drawings.
【０００３】図５はこの圧縮機の縦断面図、図６は同圧
縮機の固定スクロールと旋回スクロールの組み合わせ状
態を示す図、そして図７は軸受け部品を示す図である。FIG. 5 is a longitudinal sectional view of this compressor, FIG. 6 is a view showing a combined state of a fixed scroll and an orbiting scroll of the compressor, and FIG. 7 is a view showing bearing parts.
【０００４】この圧縮機は、底部に油溜り１５２を有す
る内部低圧の密閉容器内に圧縮機構部１５３と、この圧
縮機構部１５３を駆動する電動機１５６、１５７と、こ
の電動機の回転力を前記圧縮機構部に伝達する主軸１５
９と、この主軸の一端に取付けられたオイルポンプ１６
２などで構成されている。主軸１５９は密閉容器のシェ
ル１５１の内周面に焼き嵌め固定された軸受け部品１５
８に支持され、また電動機のステータ１５６も軸受け部
品１５８の取付部にボルト等で固定される構成である。In this compressor, a compression mechanism portion 153, an electric motor 156 and 157 for driving the compression mechanism portion 153, and a rotational force of the electric motor are compressed in an internal low-pressure closed container having an oil sump 152 at the bottom. Main shaft 15 transmitted to the mechanical section
9 and an oil pump 16 attached to one end of the main shaft
It is composed of 2 etc. The main shaft 159 is a bearing component 15 that is shrink-fitted and fixed to the inner peripheral surface of the shell 151 of the closed container.
8 and the stator 156 of the electric motor is also fixed to the mounting portion of the bearing component 158 with a bolt or the like.
【０００５】まず最初に、この圧縮機における圧縮機構
部への給油について説明する。電動機１５７が駆動され
ると、主軸１５９の回転によってオイルポンプ１６２が
作動し、油溜め１５２から潤滑油が吸い上げられて、主
軸内部に設けられた給油通路１５９ａから圧縮機構部お
よび軸受け各摺動部へ供給される。そして、この潤滑油
は、軸受け摺動部１１８から流出して油排出室１５８ａ
内に流入し、油排出室１５８ａの開口部から油溜め１５
２に戻される。一方、油溜め１５２内部では、オイルポ
ンプの作動により軸受け部品１５８側から切欠き部１５
８ｄと、電動機ステータ１５６とシェル１５１間の間隙
を経由してオイルポンプ１６２側へ向かう流れが発生
し、圧縮機構部および軸受け各摺動部への潤滑油の供給
は維持される。First, the oil supply to the compression mechanism portion of this compressor will be described. When the electric motor 157 is driven, the oil pump 162 operates due to the rotation of the main shaft 159, the lubricating oil is sucked up from the oil sump 152, and the compression mechanism part and the bearing sliding parts are supplied from the oil supply passage 159a provided inside the main shaft. Is supplied to. Then, this lubricating oil flows out from the bearing sliding portion 118 and flows out into the oil discharge chamber 158a.
Flowing into the oil discharge chamber 158a through the opening of the oil sump 15
Returned to 2. On the other hand, inside the oil sump 152, the cutout 15 is formed from the bearing component 158 side by the operation of the oil pump.
8d, a flow toward the oil pump 162 side is generated via the gap between the electric motor stator 156 and the shell 151, and the supply of lubricating oil to the compression mechanism portion and each sliding portion of the bearing is maintained.
【０００６】次に、冷媒ガスの流れについて説明する。
電動機１５７が駆動されると、冷媒ガスは吸入配管１６
６から電動機ステータ１５６のコイルエンド上方の吸入
空間１２９内に吸入され、電動機ステータ１５６の外周
面とシェル１５１の内周面の間隙を通過して電動機を冷
却した後、軸受け部品１５８の上方の切欠き１５８ｃを
通過して冷媒ガス吸入孔１５４ｂから圧縮室１１３に取
り込まれ、圧縮された後、吐出管１２４からシェル１５
１外へ吐出される。Next, the flow of the refrigerant gas will be described.
When the electric motor 157 is driven, the refrigerant gas is sucked into the suction pipe 16
6 is sucked into the suction space 129 above the coil end of the electric motor stator 156, passes through the gap between the outer peripheral surface of the electric motor stator 156 and the inner peripheral surface of the shell 151 to cool the electric motor, and then cuts above the bearing component 158. After passing through the notch 158c and taken into the compression chamber 113 through the refrigerant gas suction hole 154b and compressed, the discharge pipe 124 is used to discharge the shell 15 into the compression chamber 113.
1 is discharged to the outside.
【０００７】以上説明したように、軸受け部品１５８の
上方の切欠き１５８ｃおよび下方の切欠き１５８ｄは冷
媒ガスおよび潤滑油の連通路として機能するので、大き
い寸法に設定されることが望ましい。As described above, since the upper cutout 158c and the lower cutout 158d of the bearing component 158 function as a communication passage for the refrigerant gas and the lubricating oil, it is desirable to set them to a large size.
【０００８】[0008]
【発明が解決しようとする課題】しかしながら、上述し
たような軸受け部品をシェル内部に焼き嵌めして固定
し、この軸受け部品の取付部に電動機ステータをボルト
等で固定する構成では、冷媒ガスおよび潤滑油通過の点
では良好であるが、圧縮機運転時に発生する振動に対し
て弱い構造になる。これを改善する一方策として電動機
ステータもシェル内部に焼き嵌め固定する方策がある
が、この場合は冷媒ガスや潤滑油の連通路を確保するた
めに、電動機ステータの円筒部側面すなわち軸線方向と
平行に複数個の切欠きを設ける必要が生ずる。この切欠
きの軸線方向への総開口面積の大きさが小さいほど振動
に対して強い構造になり、またモータ効率の面でも有利
になるが、反面冷媒ガスや潤滑油の流動抵抗の増大によ
る潤滑油や冷媒の連通不良を招く問題が生ずる。そこで
本発明はこの問題に鑑みて、振動に強い構造でありなが
ら、潤滑油や冷媒ガスの連通不良を回避でき、さらにコ
スト面で有利なシーム溶接によって形成されるシェルへ
の電動機焼き嵌め固定を容易にできるように電動機ステ
ータの切欠き配置を工夫し、信頼性の高い横置き電動圧
縮機を提供するものである。However, in the structure in which the bearing component as described above is shrink-fitted and fixed inside the shell, and the electric motor stator is fixed to the mounting portion of the bearing component with a bolt or the like, the refrigerant gas and the lubrication are eliminated. Although it is good in terms of oil passage, it has a structure that is vulnerable to vibration generated during compressor operation. One way to improve this is to fix the electric motor stator inside the shell by shrink fitting, but in this case, in order to secure a communication passage for the refrigerant gas and lubricating oil, the cylindrical surface of the electric motor stator should be parallel to the axial direction. It becomes necessary to provide a plurality of notches in the. The smaller the size of the total opening area of the notch in the axial direction, the stronger the structure against vibrations, and the more advantageous the motor efficiency. This causes a problem of poor communication of oil and refrigerant. Therefore, in view of this problem, the present invention has a structure that is resistant to vibration, but can avoid poor communication of lubricating oil and refrigerant gas, and can be fixed by shrink fitting the motor to the shell formed by seam welding, which is advantageous in terms of cost. It is an object of the present invention to provide a highly reliable horizontal electric compressor by devising the notch arrangement of the electric motor stator so that it can be easily performed.
【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
の本発明の第１の手段は、密閉容器に焼き嵌め固定され
る電動機ステータの最外周部に軸線方向と略平行に複数
個の切欠きを設け、この切欠きのうち前記油溜りに臨む
底部の切欠きの軸線方向開口面積を最大にし、かつ他の
切欠きのうちいずれかを前記密閉容器の軸線方向のシー
ム溶接部の位置に配設する構成にしたものである。The first means of the present invention for solving the above-mentioned problems is to provide a plurality of cuts in an outermost peripheral portion of an electric motor stator which is shrink-fitted and fixed in an airtight container, in parallel with the axial direction. A notch is provided to maximize the axial opening area of the bottom notch of the notch facing the oil sump, and one of the other notches is located at the position of the seam weld in the axial direction of the closed container. It is configured to be arranged.
【００１０】また、上記課題を解決するための本発明の
第２の手段は、上記第１の手段に加えて、前記切欠きを
前記オイルポンプ側から前記圧縮機構部側に向けて軸方
向の開口面積が除々に大きくなる形状にしたものであ
る。A second means of the present invention for solving the above-mentioned problems is, in addition to the above-mentioned first means, an axial direction of the notch from the oil pump side toward the compression mechanism part side. The shape is such that the opening area gradually increases.
【００１１】また、上記課題を解決するための本発明の
第３の手段は、上記第１の手段、もしくは第１および第
２の手段に加えて、前記切欠きの前記圧縮機構部側に開
口するエッジ部をなだらかな曲面形状にしたものであ
る。A third means of the present invention for solving the above-mentioned problems is, in addition to the above-mentioned first means or the first and second means, an opening on the side of the compression mechanism of the notch. The edge part is formed into a gently curved surface.
【００１２】[0012]
【作用】本発明の第１の手段による作用は、上記のごと
く電動機ステータを密閉容器に焼き嵌め固定する方策で
あるので振動に強い構造にすることができ、電動機ステ
ータの最外周部に設けた複数の切欠きのうち前記油溜り
に臨む底部の切欠きの軸線方向開口面積のみを選択的に
最大にすることにより、焼き嵌め強度をほとんど低下さ
せることなく潤滑油の連通を良好にし、かつ他の切欠き
のうちいずれかを前記密閉容器の軸線方向のシーム溶接
部の位置に配設する構成にしたことにより、シーム溶接
部の盛り上がりを切欠きで逃げることができ、除去加工
することなしに焼き嵌めを可能にできるとともに冷媒ガ
スの連通孔の一つとして機能させ、電動機の冷却を行な
うことができることである。さらにまた、複数個の切欠
きを有していることにより、シーム溶接部の位置の選択
の幅を広げることができることである。The operation of the first means of the present invention is a measure for shrink-fitting and fixing the electric motor stator in the closed container as described above, so that a structure resistant to vibration can be provided and it is provided at the outermost peripheral portion of the electric motor stator. By selectively maximizing only the axial opening area of the bottom notch of the plurality of notches facing the oil sump, the communication of the lubricating oil is improved without substantially reducing the shrink fitting strength, and By arranging one of the notches at the position of the seam weld in the axial direction of the closed container, the swell of the seam weld can be escaped by the notch, and without removing processing. It is possible to perform shrink fitting and to function as one of the communication holes for the refrigerant gas to cool the electric motor. Furthermore, by having a plurality of notches, it is possible to widen the range of selection of the position of the seam weld portion.
【００１３】本発明の第２の手段による作用は、第１の
手段による作用に加えて、前記切欠きを前記オイルポン
プ側から前記圧縮機構部側に向けて軸方向の開口面積が
除々に大きくなる形状にして、潤滑油の流れの上流にあ
たる圧縮機構部側の油溜りとの段差を小さくしたことに
より流動抵抗損失を小さくし、潤滑油の連通をより良好
にすることができることである。In addition to the effect of the first means, the effect of the second means of the present invention is such that the opening area in the axial direction gradually increases from the oil pump side to the compression mechanism side. With this shape, the flow resistance loss can be reduced and the communication of the lubricating oil can be improved by reducing the level difference with the oil reservoir on the side of the compression mechanism that is upstream of the flow of the lubricating oil.
【００１４】本発明の第３の手段による作用は、上記第
１の手段、もしくは第１および第２の手段に加えて、前
記切欠きの前記圧縮機構部側に開口するエッジ部をなだ
らかな曲面形状にしたことにより、潤滑油の流れの上流
にあたる圧縮機構部側の油溜りの流動抵抗損失をさらに
小さくして潤滑油の連通をより良好にするとともに、潤
滑油のエッジ部への衝突によって発生する気泡によるオ
イルポンプの吸い込み効率の低下を抑えることができる
ことである。The effect of the third means of the present invention is that, in addition to the first means or the first and second means, the edge portion of the notch opening to the compression mechanism side is a gently curved surface. Due to the shape, the flow resistance loss of the oil reservoir on the compression mechanism side, which is upstream of the lubricating oil flow, is further reduced to improve the communication of the lubricating oil, and it is caused by the collision of the lubricating oil with the edge. That is, it is possible to suppress the decrease in the suction efficiency of the oil pump due to the bubbles that are generated.
【００１５】[0015]
【実施例】まず、本発明の請求項１記載の実施例を図
１、図２で説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an embodiment according to claim 1 of the present invention will be described with reference to FIGS.
【００１６】図１は本発明の請求項１記載の圧縮機の縦
断面図、図２は同圧縮機の電動機ステータの横断面図で
ある。FIG. 1 is a vertical sectional view of a compressor according to claim 1 of the present invention, and FIG. 2 is a horizontal sectional view of an electric motor stator of the compressor.
【００１７】本実施例は横置きのスクロール圧縮機で、
底部に油溜り７を有する内部高圧の密閉容器内に固定ス
クロール８、９および旋回スクロール１１、１２などを
含んで構成される圧縮機構部と、この圧縮機構部を駆動
する電動機３、４と、この電動機の回転力を圧縮機構部
に伝達する主軸６と、この主軸の一端に取付けられたオ
イルポンプ４２などで構成されている。主軸６は密閉容
器のシェル１の内周面に焼き嵌め固定された軸受け部品
１０にその一端を支持され、他端を圧縮機構部が存在す
る空間とオイルポンプ４２が存在する空間とに密閉容器
を２分割するガス連通孔５１と潤滑油連通孔５２を備え
た隔壁部材５０の中央部に取付けた軸受け５３に支障さ
れる。そして、外周部に複数個の切欠きをもった電動機
のステータ３はシーム溶接によって形成された密閉容器
のシェル１の内周面に、最大切欠き５４が油溜め７、
７’に臨む下方に、他の切欠きのうち一つ５５ｂがシー
ム溶接部５６の位置になるように焼き嵌め固定される構
成である。このため、電動機がシェルに直接固定されな
い方式に比べて、振動面で格段に有利になる。This embodiment is a horizontal scroll compressor,
A compression mechanism portion including fixed scrolls 8 and 9 and orbiting scrolls 11 and 12 in an internal high-pressure closed container having an oil sump 7 at the bottom, and electric motors 3 and 4 driving the compression mechanism portion; The main shaft 6 is configured to transmit the rotational force of the electric motor to the compression mechanism section, and an oil pump 42 attached to one end of the main shaft. The main shaft 6 has one end supported by a bearing component 10 that is shrink-fitted and fixed to the inner peripheral surface of the shell 1 of the hermetically sealed container, and the other end has a hermetically sealed container in the space where the compression mechanism portion is present and the space where the oil pump 42 is present. The bearing 53 attached to the central portion of the partition wall member 50 having the gas communication hole 51 and the lubricating oil communication hole 52 that divide into two is obstructed. The stator 3 of the electric motor having a plurality of cutouts on the outer peripheral portion is formed by seam welding, and the maximum notch 54 is formed on the inner peripheral surface of the shell 1 of the closed container.
One of the other notches 55b is shrink-fitted and fixed so as to be at the position of the seam welded portion 56 below the portion 7 '. For this reason, compared to the method in which the electric motor is not directly fixed to the shell, it is significantly advantageous in terms of vibration.
【００１８】次に、この圧縮機における圧縮機構部への
給油について説明する。電動機３、４が駆動されると、
主軸６の回転によってオイルポンプ４２が作動し、油溜
め７から潤滑油が吸い上げられて、主軸内に設けられた
給油通路４３から圧縮機構部および軸受け部品１０の摺
動部１９へ供給される。そして、この潤滑油は、軸受け
部品１０の摺動部１９から流出して油溜め７’内に流入
し、電動機ステータの最大切欠き５４とシェル１の内周
面の間隙、および隔壁部材５０のオイル連通孔５２を経
由してオイルポンプ側の油溜り７へ戻され、圧縮機運転
中はこの潤滑油の循環によって圧縮機構部および軸受け
各摺動部への潤滑油の供給は維持される。Next, the oil supply to the compression mechanism portion of this compressor will be described. When the electric motors 3 and 4 are driven,
The oil pump 42 is actuated by the rotation of the main shaft 6, the lubricating oil is sucked up from the oil sump 7, and is supplied from the oil supply passage 43 provided in the main shaft to the compression mechanism portion and the sliding portion 19 of the bearing component 10. Then, this lubricating oil flows out from the sliding portion 19 of the bearing component 10 and flows into the oil sump 7 ′, and the gap between the maximum notch 54 of the motor stator and the inner peripheral surface of the shell 1 and the partition member 50. The oil is returned to the oil sump 7 on the oil pump side through the oil communication hole 52, and during the operation of the compressor, the circulation of the lubricating oil maintains the supply of the lubricating oil to the compression mechanism portion and each sliding portion of the bearing.
【００１９】さらに、冷媒ガスの流れについて説明す
る。電動機３、４が駆動されると、冷媒ガスは吸入孔１
５から圧縮室１４に取り込まれ、圧縮された後、吐出孔
１６から密閉容器内に吐出される。そのため、密閉容器
内は高圧（吐出圧）となる。吐出された冷媒ガスは固定
スクロールのガス連通孔５１および軸受け部品１０の連
通孔１８から電動機ステータの複数の切欠き５５とシェ
ルの内周面の間隙に入り電動機を冷却した後、隔壁部材
５０のガス連通孔５１を経由して吐出管１６から吐出さ
れる。Further, the flow of the refrigerant gas will be described. When the electric motors 3 and 4 are driven, the refrigerant gas is sucked into the suction hole 1
After being taken into the compression chamber 14 from 5 and compressed, it is discharged from the discharge hole 16 into the closed container. Therefore, the inside of the closed container has a high pressure (discharge pressure). The discharged refrigerant gas enters the gaps between the plurality of notches 55 of the electric motor stator and the inner peripheral surface of the shell from the gas communication hole 51 of the fixed scroll and the communication hole 18 of the bearing component 10 to cool the electric motor, and then the partition wall member 50. The gas is discharged from the discharge pipe 16 via the gas communication hole 51.
【００２０】以上説明したように、電動機ステータ３の
切欠き５４、５５は潤滑油や冷媒ガスの長い通路となる
ため、通路抵抗の面でなるべく切欠きの大きさ（軸線方
向の開口面積）は大きい方が望ましい。しかし、この切
欠きを大きくすることは、密閉容器のシェル１の内周面
に焼き嵌めすることによる振動強度面での優位性を低下
させてしまうので、圧縮機構部および軸受け各摺動部の
潤滑油供給に大きな影響を及ぼす底部の切欠き５４のみ
を選択的に大きくする構成にしたことにより、焼き嵌め
強度と潤滑油の連通性の両立を可能にした。さらに、他
の切欠きのうちいずれかを前記密閉容器の軸線方向のシ
ーム溶接部の位置に配設する構成にしたことにより、シ
ーム溶接部の盛り上がりを切欠きで逃げることができ、
除去加工することなしに焼き嵌めを可能にできるととも
に冷媒ガスの連通孔の一つとして機能させ、電動機の冷
却も可能にした。これらの実現により、低コストで信頼
性の高い横置き電動圧縮機を提供できる。As described above, since the notches 54 and 55 of the motor stator 3 are long passages for lubricating oil and refrigerant gas, the size of the notches (the opening area in the axial direction) is as small as possible in terms of passage resistance. Larger is preferable. However, increasing this notch reduces the superiority in terms of vibration strength due to shrink fitting on the inner peripheral surface of the shell 1 of the closed container. By making only the bottom notch 54, which has a great influence on the supply of lubricating oil, selectively larger, it is possible to achieve both shrink fit strength and lubricating oil communication. Furthermore, by arranging any one of the other notches at the position of the seam weld in the axial direction of the closed container, the protrusion of the seam weld can be escaped by the notch,
It enables shrink fitting without removal processing and also functions as one of the refrigerant gas communication holes, enabling cooling of the electric motor. By realizing these, it is possible to provide a low-cost and highly reliable horizontal electric compressor.
【００２１】次に、本発明の請求項２記載の実施例を図
３で説明する。図３は本発明の請求項２記載の横置き電
動圧縮機のステータの部分詳細図である。同図に示すよ
うに底部のステータの切欠き５４ｂをオイルポンプ側か
ら圧縮機構部側に向けて軸方向の開口面積が除々に大き
くなる形状にしてその入口部と油溜り７’との段差を小
さくしている。そのため流動抵抗損失が小さくなり、潤
滑油の連通をより良好にすることができることにより、
さらに信頼性の高い横置き電動圧縮機を提供できる。Next, an embodiment according to claim 2 of the present invention will be described with reference to FIG. FIG. 3 is a partial detailed view of a stator of a horizontal electric compressor according to claim 2 of the present invention. As shown in the figure, the bottom notch 54b of the stator is formed in such a shape that the opening area in the axial direction gradually increases from the oil pump side toward the compression mechanism side, and the step difference between the inlet and the oil sump 7'is formed. I'm making it small. Therefore, the flow resistance loss is reduced and the communication of the lubricating oil can be improved,
Further, it is possible to provide a highly reliable horizontal electric compressor.
【００２２】最後に、本発明の請求項３記載の実施例を
図４で説明する。図４は本発明の請求項３記載の横置き
電動圧縮機のステータの部分詳細図である。同図に示す
ように底部のステータの切欠き５４ｃの圧縮機構部側に
開口するエッジ部をなだらかな曲面形状にしている。そ
のため、潤滑油の流れの上流にあたる圧縮機構部側の油
溜り７’の流動抵抗損失がさらに小さくなり潤滑油の連
通をより良好にするとともに、潤滑油のエッジ部への衝
突によって発生する気泡によるオイルポンプの吸い込み
効率の低下を抑えることができることにより、さらに信
頼性の高い横置き電動圧縮機を提供できる。Finally, an embodiment according to claim 3 of the present invention will be described with reference to FIG. FIG. 4 is a partial detailed view of a stator of a horizontal electric compressor according to claim 3 of the present invention. As shown in the drawing, the edge portion of the notch 54c of the bottom stator, which opens to the compression mechanism portion side, has a gentle curved surface shape. Therefore, the flow resistance loss of the oil reservoir 7 ′ on the compression mechanism side, which is upstream of the flow of the lubricating oil, is further reduced to improve the communication of the lubricating oil, and the bubbles generated by the collision of the lubricating oil with the edge portion are caused. Since it is possible to suppress a decrease in suction efficiency of the oil pump, it is possible to provide a more reliable horizontal electric compressor.
【００２３】[0023]
【発明の効果】本発明の第１の手段による効果は、前述
のごとく電動機ステータを密閉容器に焼き嵌め固定する
方策であるので振動に強い構造にすることができ、電動
機ステータの最外周部に設けた複数の切欠きのうち前記
油溜りに臨む底部の切欠きの軸線方向開口面積のみを選
択的に最大にすることにより、焼き嵌め強度をほとんど
低下させることなく潤滑油の連通を良好にし、かつ他の
切欠きのうちいずれかを前記密閉容器の軸線方向のシー
ム溶接部の位置に配設する構成にしたことにより、シー
ム溶接部の盛り上がりを切欠きで逃げることができ、除
去加工することなしに焼き嵌めを可能にできるとともに
冷媒ガスの連通孔の一つとして機能させ、電動機の冷却
を行なうことができることにより、低コストで信頼性の
高い横置き電動圧縮機を提供できることである。さらに
また、複数個の切欠きを有していることにより、シーム
溶接部の位置の選択の幅を広げることができることであ
る。As described above, the effect of the first means of the present invention is a measure for shrink-fitting and fixing the electric motor stator in a hermetically sealed container, so that a structure resistant to vibration can be provided, and the outermost peripheral portion of the electric motor stator can be provided. By selectively maximizing only the axial opening area of the notch of the bottom facing the oil reservoir among the plurality of notches provided, the communication of the lubricating oil is improved with almost no decrease in the shrink fitting strength, And by arranging any one of the other notches at the position of the seam weld in the axial direction of the closed container, the swell of the seam weld can be escaped by the notch and can be removed. It is possible to perform shrink fitting without using it and to function as one of the communication holes for the refrigerant gas to cool the electric motor. It is that it can provide an opportunity. Furthermore, by having a plurality of notches, it is possible to widen the range of selection of the position of the seam weld portion.
【００２４】本発明の第２の手段による効果は、第１の
手段による効果に加えて、前記切欠きを前記オイルポン
プ側から前記圧縮機構部側に向けて軸方向の開口面積が
除々に大きくなる形状にして、潤滑油の流れの上流にあ
たる圧縮機構部側の油溜りとの段差を小さくしたことに
より流動抵抗損失を小さくし、潤滑油の連通をより良好
にすることができることにより、さらに信頼性の高い横
置き電動圧縮機を提供できることである。The effect of the second means of the present invention is that, in addition to the effect of the first means, the opening area in the axial direction gradually increases from the oil pump side toward the compression mechanism part side. In addition, the flow resistance loss can be reduced by making the step difference with the oil reservoir on the compression mechanism side that is upstream of the flow of the lubricating oil smaller, and the communication of the lubricating oil can be improved. That is, it is possible to provide a horizontal electric compressor having high performance.
【００２５】本発明の第３の手段による効果は、上記第
１、第２の手段に加えて、前記切欠きの前記圧縮機構部
側に開口するエッジ部をなだらかな曲面形状にしたこと
により、潤滑油の流れの上流にあたる圧縮機構部側の油
溜りの流動抵抗損失をさらに小さくして潤滑油の連通を
より良好にするとともに、潤滑油のエッジ部への衝突に
よって発生する気泡によるオイルポンプの吸い込み効率
の低下を抑えることができることにより、さらに信頼性
の高い横置き電動圧縮機を提供できることである。The effect of the third means of the present invention is that, in addition to the above-mentioned first and second means, the edge portion of the notch opening to the side of the compression mechanism has a gently curved surface shape. The flow resistance loss of the oil reservoir on the side of the compression mechanism, which is upstream of the flow of the lubricating oil, is further reduced to improve the communication of the lubricating oil, and at the same time, the bubbles in the oil pump due to the bubbles generated by the collision of the lubricating oil with the edge portion are improved. By suppressing the reduction of suction efficiency, it is possible to provide a more reliable horizontal electric compressor.
【図１】本発明の請求項１記載の横置き電動圧縮機の縦
断面図FIG. 1 is a vertical sectional view of a horizontal electric compressor according to claim 1 of the present invention.
【図２】本発明の請求項１記載の横置き電動圧縮機のス
テータの横断面図FIG. 2 is a transverse cross-sectional view of the stator of the horizontal electric compressor according to claim 1 of the present invention.
【図３】本発明の請求項２記載の横置き電動圧縮機のス
テータの部分詳細図FIG. 3 is a partial detailed view of a stator of a horizontal electric compressor according to claim 2 of the present invention.
【図４】本発明の請求項３記載の横置き電動圧縮機のス
テータの部分詳細図FIG. 4 is a partial detailed view of a stator of a horizontal electric compressor according to claim 3 of the present invention.
【図５】従来の横置き電動圧縮機の縦断面図FIG. 5 is a vertical cross-sectional view of a conventional horizontal electric compressor.
【図６】従来の横置き電動圧縮機の圧縮機構部の横断面
図FIG. 6 is a cross-sectional view of a compression mechanism portion of a conventional horizontal electric compressor.
【図７】従来の横置き電動圧縮機の軸受け部品の横断面
図FIG. 7 is a cross-sectional view of a bearing component of a conventional horizontal electric compressor.
１ シェル ２ 電動機ステータ ４ 電動機ロータ ６ 主軸 ７、７’ 油溜り ８、９ 固定スクロール １０ 軸受け部品 １１、１２ 旋回スクロール １４ 圧縮室 １５ 吸入管 １６ 吐出管 ４２ オイルポンプ ４３ 給油通路 ５０ 隔壁部材 ５１ ガス連通孔 ５２ オイル連通孔 ５３ 軸受け ５４ ステータ最大切欠き ５５ ステータ切欠き ５６ シーム溶接部 DESCRIPTION OF SYMBOLS 1 shell 2 electric motor stator 4 electric motor rotor 6 main shaft 7, 7'oil sump 8, 9 fixed scroll 10 bearing parts 11, 12 orbiting scroll 14 compression chamber 15 suction pipe 16 discharge pipe 42 oil pump 43 oil supply passage 50 partition wall member 51 gas communication Hole 52 Oil communication hole 53 Bearing 54 Stator maximum notch 55 Stator notch 56 Seam weld
───────────────────────────────────────────────────── フロントページの続き (72)発明者 二上 義幸 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiyuki Nigami 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.
Claims (3)
りを有する内部高圧の密閉容器内に圧縮機構部と、この
圧縮機構部を駆動する電動機と、この電動機の回転力を
前記圧縮機構部に伝達する両端を軸受けによって支持さ
れた軸方向内部に給油貫通孔を有する主軸と、この主軸
の一端に取付けられ前記圧縮機構部とは反対側の吐出管
が存在する空間内で前記油溜りに臨むオイルポンプとを
含んで構成し、前記密閉容器に焼き嵌め固定される前記
電動機ステータの最外周部に軸線方向と略平行に複数個
の切欠きを設け、この切欠きのうち前記油溜りに臨む底
部の切欠きの軸線方向開口面積を最大にし、かつ他の切
欠きのうちいずれかを前記密閉容器の軸線方向のシーム
溶接部の位置に配設した横置き電動圧縮機。1. A compression mechanism section, an electric motor for driving the compression mechanism section, and a rotational force of the electric motor in the compression mechanism section in an internal high-pressure closed container having an oil sump at the bottom formed by seam welding. It faces the oil sump in a space in which there is a main shaft having an oil supply through hole in the axial direction whose both ends to be transmitted are supported by bearings, and a discharge pipe which is attached to one end of the main shaft and is opposite to the compression mechanism section. An oil pump is included, and a plurality of notches are provided in the outermost peripheral portion of the electric motor stator that is shrink-fitted and fixed in the hermetically sealed container, the notches being substantially parallel to the axial direction. The notches face the oil sump. A horizontal electric compressor in which the axial opening area of the bottom notch is maximized, and one of the other notches is arranged at the position of the seam weld in the axial direction of the closed container.
に向けて軸方向の開口面積が除々に大きくなる形状にし
た請求項１記載の横置き電動圧縮機。2. The horizontal electric compressor according to claim 1, wherein the notch has a shape such that an opening area in the axial direction gradually increases from the oil pump side toward the compression mechanism side.
をなだらかな曲面形状にした請求項１、２記載の横置き
電動圧縮機。3. The horizontally placed electric compressor according to claim 1, wherein an edge portion of the notch that opens toward the compression mechanism portion has a gently curved surface shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP420895A JPH08193589A (en) | 1995-01-13 | 1995-01-13 | Horizontally type motor-driven compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP420895A JPH08193589A (en) | 1995-01-13 | 1995-01-13 | Horizontally type motor-driven compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08193589A true JPH08193589A (en) | 1996-07-30 |
Family
ID=11578226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP420895A Pending JPH08193589A (en) | 1995-01-13 | 1995-01-13 | Horizontally type motor-driven compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08193589A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2019244259A1 (en) * | 2018-06-19 | 2021-04-22 | 東芝キヤリア株式会社 | Compressor and refrigeration cycle equipment |
-
1995
- 1995-01-13 JP JP420895A patent/JPH08193589A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2019244259A1 (en) * | 2018-06-19 | 2021-04-22 | 東芝キヤリア株式会社 | Compressor and refrigeration cycle equipment |
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