JPH0669384U - Scroll compressor - Google Patents
Scroll compressorInfo
- Publication number
- JPH0669384U JPH0669384U JP009804U JP980493U JPH0669384U JP H0669384 U JPH0669384 U JP H0669384U JP 009804 U JP009804 U JP 009804U JP 980493 U JP980493 U JP 980493U JP H0669384 U JPH0669384 U JP H0669384U
- Authority
- JP
- Japan
- Prior art keywords
- drive shaft
- bearing
- scroll
- orbiting scroll
- lubricating oil
- 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)
Abstract
(57)【要約】
【目的】潤滑油の循環が容易なスクロール圧縮機を得
る。
【構成】中央に透孔８を具える凹陥部９を設けて駆動軸
軸受１０を配設し、その外側に環状凹部１１を設けてそ
の中間の高所に環状溝１２を設け、シールリング１３を
配設してスラスト軸受１４とする。駆動軸軸受１０に駆
動軸６を挿入し、その上端に偏心して設けた偏心軸受７
に旋回スクロール軸４ｃを挿入して旋回スクロール４を
スラスト軸受１４にて支持する。凹陥部９と環状凹部１
１を連結する環状溝１２より深い潤滑油供給溝１８を設
ける。
(57) [Summary] [Objective] To obtain a scroll compressor in which the circulation of lubricating oil is easy. [Structure] A drive shaft bearing 10 is provided by providing a recess 9 having a through hole 8 in the center, an annular recess 11 is provided on the outside thereof, and an annular groove 12 is provided at an intermediate high position, and a seal ring 13 is provided. Is provided to form the thrust bearing 14. An eccentric bearing 7 in which the drive shaft 6 is inserted in the drive shaft bearing 10 and eccentrically provided at the upper end thereof.
The orbiting scroll shaft 4c is inserted into the shaft and the orbiting scroll 4 is supported by the thrust bearing 14. Recess 9 and annular recess 1
A lubricating oil supply groove 18 that is deeper than the annular groove 12 that connects 1 is provided.
Description
【０００１】[0001]
本考案はスクロール圧縮機に関し、詳しくは潤滑油の通路構造に関する。 The present invention relates to a scroll compressor, and more particularly, to a passage structure for lubricating oil.
【０００２】[0002]
従来例によるこの種のスクロール圧縮機としては、図３に示すフロン等のガス 体の圧縮機がある。同図において、内部を高圧室２とした密閉容器１内に、鏡板 ３ａに渦巻状のラップ３ｂを立設させると共にほぼ中央に吐出孔３ｃを穿設して なる固定スクロール３が固定され、その下方に同じく鏡板４ａの一面に渦巻状の ラップ４ｂを立設させると共に他面に旋回スクロール軸４ｃを設けた旋回スクロ ール４がラップを噛み合わせて偏心して配設され、上記両ラップ間に圧縮室５が 形成されている。上記旋回スクロール軸４ｃは図示していないモーターにより駆 動される駆動軸６の上端に偏心して設けた偏心軸受７に挿入され、一方、中央に 透孔８を具える凹陥部９を設けて駆動軸軸受１０を配設し、その外側に環状凹部 １１を設けて図示していないオルダムリングを配設し、その中間の高所に環状溝 １２を設けてシールリング１３を配設してスラスト軸受１４としてなるフレーム １５の上記駆動軸軸受１０に駆動軸６を挿入し、上記スラスト軸受１４にて旋回 スクロール４を支持し、上記駆動軸６の下端にポンプ部を設けて密閉容器１底部 の油溜に浸漬し、同軸内に送油孔１６を穿設してしてポンプ部と各軸受部を結ん でいる。また上記送油孔１６上部は分岐されてフレーム１５に穿設した貫通送油 孔１７を通して環状凹部１１に連通され、同部には旋回スクロール４が臨んでい る。更に、固定スクロール３とフレーム１５の側壁には密閉容器１との間に潤滑 油の戻り孔１９が設けられて、固定スクロール３が臨む密閉容器１の上部と油溜 のある下部を連絡している。 従って、圧縮機が運転されると、圧縮室５外側から入る低圧ガスが圧縮されて 吐出孔３ｃから高圧室２に吐出されて外部負荷に供給される。一方、油溜の潤滑 油はポンプ部から送油孔１６内を上昇して偏心軸受７に供給され、凹陥部９に流 出して駆動軸軸受１０に給油し、さらに環状溝１２に達する。又送油孔１６上部 で分岐した潤滑油は貫通送油孔１７を経て環状凹部１１を満たし、オルダムリン グに給油すると共に旋回スクロール４を介して圧縮室５内に到り、ラップに給油 して吐出孔３ｃより高圧室２に噴出され、戻り孔１９を経て油溜に戻る。このよ うにして、高圧側である凹陥部と低圧側である環状凹部間にガス洩れ防止用のシ ールリングを設けて圧縮効率を高めた小型圧縮機の各部に給油が行われている。 しかしながら、貫通送油孔１７の穿孔は技術を要する上に兎角閉塞される欠点 がある。 As a scroll compressor of this type according to the conventional example, there is a compressor of a gas body such as Freon shown in FIG. In the figure, in a closed container 1 having a high-pressure chamber 2 inside, a fixed scroll 3 having a spiral wrap 3b standing on a mirror plate 3a and a discharge hole 3c formed substantially at the center is fixed. Similarly, a spiral wrap 4b is provided upright on one surface of the end plate 4a, and a swivel scroll 4 provided with a swivel scroll shaft 4c on the other surface is eccentrically arranged by engaging the wraps, and between the both laps. A compression chamber 5 is formed. The orbiting scroll shaft 4c is inserted into an eccentric bearing 7 which is eccentrically provided at the upper end of a drive shaft 6 driven by a motor (not shown), while a recess 9 having a through hole 8 is provided at the center for driving. A shaft bearing 10 is provided, an annular recess 11 is provided on the outside thereof, an Oldham ring (not shown) is provided, an annular groove 12 is provided at an intermediate high position, and a seal ring 13 is provided. The drive shaft 6 is inserted into the drive shaft bearing 10 of the frame 15 serving as a frame 14, the orbiting scroll 4 is supported by the thrust bearing 14, and the pump portion is provided at the lower end of the drive shaft 6 so that the oil in the bottom of the closed container 1 is The pump portion and each bearing portion are connected by immersing in an oil reservoir and forming an oil feed hole 16 coaxially. The upper part of the oil feed hole 16 is branched and communicated with the annular recess 11 through the through oil feed hole 17 formed in the frame 15, and the orbiting scroll 4 faces the same portion. Further, a lubricating oil return hole 19 is provided between the fixed scroll 3 and the side wall of the frame 15 between the closed container 1 and the fixed scroll 3 so as to connect the upper part of the closed container 1 facing the fixed scroll 3 to the lower part with the oil reservoir. There is. Therefore, when the compressor is operated, the low pressure gas entering from the outside of the compression chamber 5 is compressed and discharged from the discharge hole 3c to the high pressure chamber 2 and supplied to the external load. On the other hand, the lubricating oil in the oil reservoir rises from the pump portion in the oil feed hole 16 and is supplied to the eccentric bearing 7, flows out into the recess 9 and supplies the drive shaft bearing 10, and further reaches the annular groove 12. Further, the lubricating oil branched at the upper part of the oil feed hole 16 fills the annular recess 11 through the through oil feed hole 17, feeds the Oldham ring, reaches the compression chamber 5 through the orbiting scroll 4, and feeds the lap. It is ejected from the discharge hole 3c into the high pressure chamber 2, and returns to the oil reservoir through the return hole 19. In this way, oil is supplied to each part of the small compressor in which a seal ring for preventing gas leakage is provided between the concave portion on the high pressure side and the annular concave portion on the low pressure side to improve the compression efficiency. However, the drilling of the penetrating oil feed hole 17 requires a technique and has a drawback that the rabbit angle is closed.
【０００３】[0003]
本考案は上記従来例の問題点に鑑みてなされたもので、環状凹部への給油を容 易にしたスクロール圧縮機を提供することを目的としている。 The present invention has been made in view of the problems of the above-described conventional example, and an object thereof is to provide a scroll compressor in which oil supply to an annular recess is facilitated.
【０００４】[0004]
上記課題を解決するため、この考案においては、内部を高圧室とした密閉容器 内に鏡板に渦巻状のラップを立設させた固定スクロールを固定し、同じく鏡板の 一方の面に渦巻状のラップを立設させると共に他面に旋回スクロール軸を設けた 旋回スクロールをラップを噛み合わせて偏心して対向させ、モーターにより駆動 される駆動軸の上端に偏心して設けた偏心軸受に上記旋回スクロール軸を挿入し 、中央に透孔を具える凹陥部を設けて駆動軸軸受を配設し、その外側に環状凹部 を設けてオルダムリングを配設し、その中間の高所に環状溝を設けてシールリン グを配設してスラスト軸受としてなるフレームの上記駆動軸軸受に駆動軸を挿入 し、上記スラスト軸受にて旋回スクロールを支持し、上記駆動軸の下部にポンプ 部を設けて密閉容器底部の油溜の潤滑油を同軸内に設けた送油孔を通して各部に 供給してなるスクロール圧縮機において、上記スラスト軸受に上記凹陥部と環状 凹部に連通する、環状溝より深い潤滑油供給溝を設けてなることを特徴としてい る。 In order to solve the above problems, in the present invention, a fixed scroll in which a spiral wrap is erected on a mirror plate is fixed in an airtight container whose inside is a high-pressure chamber, and a spiral wrap is also provided on one surface of the mirror plate. And the orbiting scroll shaft is provided on the other surface.The orbiting scroll is inserted into the eccentric bearing eccentrically provided on the upper end of the drive shaft driven by the motor. Then, the drive shaft bearing is installed by providing a recessed portion with a through hole in the center, the Old recess ring is provided by providing an annular recess on the outside of the drive shaft bearing, and an annular groove is provided at a high position in the middle between them for sealing. The drive shaft is inserted into the drive shaft bearing of the frame that is used as a thrust bearing, the orbiting scroll is supported by the thrust bearing, and the pump part is provided under the drive shaft to seal it. In a scroll compressor in which the lubricating oil in the oil reservoir at the bottom of the vessel is supplied to each part through the oil feed holes provided in the same axis, in the thrust bearing, the lubricating oil that is deeper than the annular groove and communicates with the recessed portion and the annular recessed portion It is characterized by the provision of grooves.
【０００５】[0005]
潤滑油は凹陥部より潤滑油供給溝を通して環状凹部に供給されるので、貫通送 油孔を必要としない。 Lubricating oil is supplied from the recess to the annular recess through the lubricating oil supply groove, so that no through-hole oil supply hole is required.
【０００６】[0006]
以下、本考案による圧縮機の一実施例を本機の部分縦断面図である図１及びフ レーム１５の平面図である図２に基づいて説明する。図示するように、内部を高 圧室２とした密閉容器１内に、鏡板３ａに渦巻状のラップ３ｂを立設させると共 にほぼ中央に吐出孔３ｃを穿設してなる固定スクロール３が固定され、その下方 に同じく鏡板４ａの一面に渦巻状のラップ４ｂを立設させると共に他面に旋回ス クロール軸４ｃを設けた旋回スクロール４がラップを噛み合わせて偏心して配設 され、上記両ラップ間に圧縮室５が形成されている。上記旋回スクロール軸４ｃ は図示していないモーターにより駆動される駆動軸６の上端に偏心して設けた偏 心軸受７に挿入され、一方、中央に透孔８を具える凹陥部９を設けて駆動軸軸受 １０を配設し、その外側に環状凹部１１を設けて図示していないオルダムリング を配設し、その中間の高所に環状溝１２を設けてシールリング１３を配設してス ラスト軸受１４としてなるフレーム１５の上記駆動軸軸受１０に駆動軸６を挿入 し、上記スラスト軸受１４にて旋回スクロール４を支持し、上記駆動軸６の下端 にポンプ部を設けて密閉容器１底部の油溜に浸漬し、同軸内に送油孔１６を穿設 してしてポンプ部と各軸受部を結んでいる。本考案の特徴である潤滑油供給溝１ ８が上記スラスト軸受１４に穿設されている。同溝１８は凹陥部９と環状凹部１ １を連結するようにスラスト軸受１４上面に穿設され、深さを環状溝１２よりや や大としてシールリング１３の下側に連通部を設けると共に、連通部の断面積を 潤滑油が通過する際十分に圧力降下して低圧側の圧力に影響しない大きさに選ば れている。この環状凹部１１には旋回スクロール４が臨み、固定スクロール３と フレーム１５の側壁には密閉容器１との間に潤滑油の戻り孔１９が設けられて、 固定スクロール３が臨む密閉容器１の上部と油溜のある下部を連絡している。 Hereinafter, an embodiment of a compressor according to the present invention will be described with reference to FIG. 1 which is a partial longitudinal sectional view of the compressor and FIG. 2 which is a plan view of a frame 15. As shown in the figure, in a closed container 1 having a high-pressure chamber 2 inside, a fixed scroll 3 formed by vertically arranging a spiral wrap 3b on an end plate 3a and forming a discharge hole 3c at substantially the center is provided. A swirl wrap 4b is fixed to the end of the end plate 4a, and a swivel scroll 4 having a swirl scroll shaft 4c on the other surface is eccentrically arranged by engaging the wraps. A compression chamber 5 is formed between the wraps. The orbiting scroll shaft 4c is inserted into an eccentric bearing 7 which is eccentrically provided at the upper end of a drive shaft 6 driven by a motor (not shown), and on the other hand, a concave portion 9 having a through hole 8 is provided at the center for driving. A shaft bearing 10 is provided, an annular recess 11 is provided on the outside thereof, an Oldham ring (not shown) is provided, an annular groove 12 is provided at an intermediate high position, and a seal ring 13 is provided. The drive shaft 6 is inserted into the drive shaft bearing 10 of the frame 15 serving as the bearing 14, the orbiting scroll 4 is supported by the thrust bearing 14, and the pump portion is provided at the lower end of the drive shaft 6 to close the bottom of the closed container 1. The pump portion and each bearing portion are connected by immersing in an oil sump and forming an oil feed hole 16 coaxially. A lubricating oil supply groove 18, which is a feature of the present invention, is formed in the thrust bearing 14. The groove 18 is bored on the upper surface of the thrust bearing 14 so as to connect the recess 9 and the annular recess 11 with the depth slightly larger than that of the annular groove 12 to provide a communicating portion below the seal ring 13. The size is selected so that the cross-sectional area of the communication part will not drop enough pressure when the lubricating oil passes through and will not affect the pressure on the low pressure side. The circular scroll 11 faces the orbiting scroll 4, and the side wall of the fixed scroll 3 and the frame 15 is provided with a lubricating oil return hole 19 between the fixed scroll 3 and the frame 1, so that the fixed scroll 3 faces the upper part of the closed container 1. And the bottom with the oil sump is in contact.
【０００７】 次にこの圧縮機の動作を説明する。図示していないモータの回転軸と一体とな って駆動される駆動軸６の回転により、偏心して支持されている旋回スクロール 軸４ｃはこの偏心距離を半径とする円を描いて旋回する。そして図示を省略した オルダムリングに規制されて旋回スクロール４は固定スクロール３に対して見掛 け上自転しないように旋回し、固定スクロール３に対してラップを構成する各円 の一点を常にほぼ接触させながら旋回運動を行い、その接触点を外周から中心に 連続して移動させていく。これにより圧縮室５の外周から吸入される低圧ガスは 中心に送られるにつれて空間容積が減少するので圧縮されて高圧ガスとなり、吐 出口３ｃから高圧室２に入って外部機器に供給される。一方、油溜の潤滑油はポ ンプ部から送油孔１６内を上昇して偏心軸受７に供給され、凹陥部９に流出して 駆動軸軸受１０に給油し、さらに環状溝１２に達する。又凹陥部９と環状凹部１ １は潤滑油供給溝１８により連通しているので、凹陥部９に流出した潤滑油は潤 滑油供給溝１８を通って環状凹部１１を満たし、オルダムリングに給油すると共 に旋回スクロール４を介して圧縮室５内に到り、ラップに給油して吐出孔３ｃよ り高圧室２に噴出され、戻り孔１９を経て油溜に戻る。このようにして、高圧側 である凹陥部９と低圧側である環状凹部１１間にガス洩れ防止用のシールリング １３を設けて圧縮効率を高めた小型圧縮機の環状凹部１１に給油が行われ、連通 部の断面積を適正に選んでいるので低圧側に影響することがない。Next, the operation of this compressor will be described. The orbiting scroll shaft 4c, which is supported eccentrically, orbits in a circle having a radius of this eccentric distance by the rotation of the drive shaft 6 that is driven integrally with the rotating shaft of the motor (not shown). The orbiting scroll 4 is regulated by an Oldham ring (not shown), so that the orbiting scroll 4 orbits relative to the fixed scroll 3 so that it does not apparently rotate, and one point of each circle forming a wrap almost always contacts the fixed scroll 3. While doing so, a turning motion is performed, and the contact point is continuously moved from the outer circumference to the center. As a result, the low-pressure gas sucked from the outer periphery of the compression chamber 5 decreases in volume as it is sent to the center and is compressed into high-pressure gas, which enters the high-pressure chamber 2 from the discharge port 3c and is supplied to external equipment. On the other hand, the lubricating oil in the oil sump rises in the oil feed hole 16 from the pump portion and is supplied to the eccentric bearing 7, flows into the recess 9 and supplies the drive shaft bearing 10, and further reaches the annular groove 12. Further, since the concave portion 9 and the annular concave portion 11 are communicated with each other by the lubricating oil supply groove 18, the lubricating oil flowing into the concave portion 9 fills the annular concave portion 11 through the lubricating oil supply groove 18 to supply oil to the Oldham ring. At the same time, it reaches the inside of the compression chamber 5 via the orbiting scroll 4, is supplied with oil to the lap and is ejected to the high pressure chamber 2 from the discharge hole 3c, and returns to the oil reservoir via the return hole 19. In this way, oil is supplied to the annular recess 11 of the small compressor in which the seal ring 13 for preventing gas leakage is provided between the recess 9 on the high pressure side and the annular recess 11 on the low pressure side to improve the compression efficiency. Since the cross-sectional area of the communication part is properly selected, it does not affect the low pressure side.
【０００８】[0008]
上述したように、凹陥部９と環状凹部１１を連結するようにスラスト軸受１４ 上面に潤滑油供給溝１８を穿設したので、環状凹部１１への給油通路の製作が容 易となると共に閉塞のおそれがなくなり、その連通部の断面積を適正に選んで低 圧側の圧力に影響しないようにしたので、シールリング１３により低圧側と高圧 側間のガス洩れが防止され、圧縮効率を高くして高能率にするという優れた効果 を奏することができる。 As described above, since the lubricating oil supply groove 18 is formed on the upper surface of the thrust bearing 14 so as to connect the concave portion 9 and the annular recess 11, the manufacturing of the oil supply passage to the annular recess 11 becomes easy and the obstruction of the obstruction is prevented. There is no fear, and the cross-sectional area of the communicating part is properly selected so that it does not affect the pressure on the low pressure side. Therefore, the seal ring 13 prevents gas leakage between the low pressure side and the high pressure side, increasing the compression efficiency. The excellent effect of high efficiency can be achieved.
【図１】本考案によるスクロール圧縮機の部分断面図で
ある。FIG. 1 is a partial sectional view of a scroll compressor according to the present invention.
【図２】本考案によるスクロール圧縮機の要部の内部平
面図である。FIG. 2 is an internal plan view of a main part of a scroll compressor according to the present invention.
【図３】従来例によるスクロール圧縮機の部分断面図で
ある。FIG. 3 is a partial sectional view of a scroll compressor according to a conventional example.
１ 密閉容器 ２ 高圧室 ３ 固定スクロール ３ａ 鏡板 ３ｂ ラップ ４ 旋回スクロール ４ａ 鏡板 ４ｂ ラップ ４ｃ 旋回スクロール軸 ６ 駆動軸 ７ 偏心軸受 ８ 透孔 ９ 凹陥部 １０ 駆動軸軸受 １１ 環状凹部 １２ 環状溝 １３ シールリング １４ スラスト軸受 １５ フレーム １６ 送油孔 １８ 潤滑油供給溝 DESCRIPTION OF SYMBOLS 1 Airtight container 2 High pressure chamber 3 Fixed scroll 3a End plate 3b Wrap 4 Orbiting scroll 4a End plate 4b Wrap 4c Orbiting scroll shaft 6 Drive shaft 7 Eccentric bearing 8 Through hole 9 Recessed portion 10 Drive shaft bearing 11 Annular recess 12 Ring groove 13 Seal ring 14 Thrust bearing 15 Frame 16 Oil feed hole 18 Lubricating oil supply groove
Claims (1)
渦巻状のラップを立設させた固定スクロールを固定し、
同じく鏡板の一方の面に渦巻状のラップを立設させると
共に他面に旋回スクロール軸を設けた旋回スクロールを
ラップを噛み合わせて偏心して対向させ、モーターによ
り駆動される駆動軸の上端に偏心して設けた偏心軸受に
上記旋回スクロール軸を挿入し、中央に透孔を具える凹
陥部を設けて駆動軸軸受を配設し、その外側に環状凹部
を設けてオルダムリングを配設し、その中間の高所に環
状溝を設けてシールリングを配設してスラスト軸受とし
てなるフレームの上記駆動軸軸受に駆動軸を挿入し、上
記スラスト軸受にて旋回スクロールを支持し、上記駆動
軸の下部にポンプ部を設けて密閉容器底部の油溜の潤滑
油を同軸内に設けた送油孔を通して各部に供給してなる
スクロール圧縮機において、上記スラスト軸受に上記凹
陥部と環状凹部に連通する、環状溝より深い潤滑油供給
溝を設けてなることを特徴とするスクロール圧縮機。1. A fixed scroll in which a spiral wrap is erected on an end plate is fixed in a closed container having a high pressure chamber inside,
Similarly, a spiral wrap is erected on one surface of the end plate and an orbiting scroll having an orbiting scroll shaft on the other surface is made to eccentrically face the wrap and eccentric to the upper end of the drive shaft driven by the motor. Insert the orbiting scroll shaft into the provided eccentric bearing, provide a drive shaft bearing with a recessed portion having a through hole in the center, and provide an annular recess on the outside thereof with an Oldham ring, and the middle thereof. The drive shaft is inserted into the drive shaft bearing of the frame which serves as a thrust bearing by providing an annular groove at a high place of the drive shaft, and the thrust bearing supports the orbiting scroll, and the lower part of the drive shaft is supported. In a scroll compressor in which a pump portion is provided and lubricating oil in an oil reservoir at the bottom of a closed container is supplied to each portion through oil feeding holes provided coaxially, in the thrust bearing, the concave portion and the annular concave portion are provided. Passing scroll compressor characterized by comprising providing a deep lubricating oil supply groove from the annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP009804U JPH0669384U (en) | 1993-03-09 | 1993-03-09 | Scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP009804U JPH0669384U (en) | 1993-03-09 | 1993-03-09 | Scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0669384U true JPH0669384U (en) | 1994-09-30 |
Family
ID=18529212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP009804U Pending JPH0669384U (en) | 1993-03-09 | 1993-03-09 | Scroll compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0669384U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010156348A (en) * | 2010-04-12 | 2010-07-15 | Mitsubishi Heavy Ind Ltd | Scroll compressor |
-
1993
- 1993-03-09 JP JP009804U patent/JPH0669384U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010156348A (en) * | 2010-04-12 | 2010-07-15 | Mitsubishi Heavy Ind Ltd | Scroll compressor |
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