JPH0466701A - Scroll type fluid machine - Google Patents
Scroll type fluid machineInfo
- Publication number
- JPH0466701A JPH0466701A JP2179062A JP17906290A JPH0466701A JP H0466701 A JPH0466701 A JP H0466701A JP 2179062 A JP2179062 A JP 2179062A JP 17906290 A JP17906290 A JP 17906290A JP H0466701 A JPH0466701 A JP H0466701A
- Authority
- JP
- Japan
- Prior art keywords
- end plate
- scroll
- fixed scroll
- partition wall
- boss
- 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
- 239000012530 fluid Substances 0.000 title claims abstract description 35
- 238000005192 partition Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 2
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000002265 prevention Effects 0.000 description 3
- 239000003921 oil Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は圧縮機、膨張機等として使用されるスクロール
型流体機械に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a scroll-type fluid machine used as a compressor, an expander, etc.
（従来の技術）
従来のスクロール型圧縮機の１例が第２図に示されてい
る。(Prior Art) An example of a conventional scroll compressor is shown in FIG.
第２図に示すように、密閉ハウジング８内上部にはスク
ロール型圧縮機構Ｃが、下部には電動モタ４が配設され
、これらは回転シャフト５によって互いに連動連結され
ている。As shown in FIG. 2, a scroll type compression mechanism C is disposed in the upper part of the closed housing 8, and an electric motor 4 is disposed in the lower part, and these are interlocked and connected to each other by a rotating shaft 5.
スクロール型圧縮機構Ｃは固定スクロールｌ、旋回スク
ロール２、旋回スクロール２の公転を許容するがその自
転を阻止するオルダムリング等の自転阻止機構３、固定
スクロール１及び電動モタ４が係止されるフレーム６、
回転シャフト５を軸支する上部軸受７１及び下部軸受７
２、旋回スクロール２を支持する旋回軸受７３及びスラ
スト軸受７４を具えている。The scroll type compression mechanism C includes a fixed scroll 1, an orbiting scroll 2, a rotation prevention mechanism 3 such as an Oldham ring that allows the orbiting scroll 2 to revolve but prevents its rotation, a frame on which the fixed scroll 1 and the electric motor 4 are locked. 6,
An upper bearing 71 and a lower bearing 7 that pivotally support the rotating shaft 5
2. It includes an orbiting bearing 73 and a thrust bearing 74 that support the orbiting scroll 2.
固定スクロール１は端板１１とうず巻体１２よりなり、
端板１１には吐出ボー目３とこれを開閉する吐出弁１７
が設けられている。The fixed scroll 1 consists of an end plate 11 and a spiral body 12,
The end plate 11 has a discharge bow 3 and a discharge valve 17 that opens and closes it.
is provided.
旋回スクロール２は端板２１とうず巻体２２とボス２３
よりなり、このボス２３内にはドライブブツシュ５４が
旋回軸受７３を介して軸支されている。そして、このド
ライブブツシュ５４には回転シャフト５の上端に突設さ
れた偏心ピン５３が回転自在に軸支されている。The orbiting scroll 2 includes an end plate 21, a spiral body 22, and a boss 23.
A drive bushing 54 is rotatably supported within this boss 23 via a swing bearing 73. An eccentric pin 53 protruding from the upper end of the rotary shaft 5 is rotatably supported on the drive bush 54.
ハウジング８内底部に貯溜された潤滑油８１は回転シャ
フト５の回転による遠心力によって入口孔５１から吸い
上げられ、給油孔５２を通って下部軸受７２、偏心ピン
５３、上部軸受７１、自転阻止機構３、旋回軸受７３、
スラスト軸受７４等を潤滑した後、室６１、排油孔６２
を経てハウジング８の底部に排出される。The lubricating oil 81 stored in the inner bottom of the housing 8 is sucked up from the inlet hole 51 by the centrifugal force caused by the rotation of the rotary shaft 5, and passes through the oil supply hole 52 to the lower bearing 72, the eccentric pin 53, the upper bearing 71, and the rotation prevention mechanism 3. , slewing bearing 73,
After lubricating the thrust bearing 74, etc., the chamber 61 and the oil drain hole 62
The liquid is discharged to the bottom of the housing 8 through this process.
電動モータ４を回転駆動すると、この回転は回転シャフ
ト５、偏心ピン５３、ドライブブツシュ５４、旋回軸受
７３を介して旋回スクロール２に伝達され、旋回スクロ
ール２は自転阻止機構３によって自転を阻止されながら
公転旋回運動する。When the electric motor 4 is driven to rotate, this rotation is transmitted to the orbiting scroll 2 via the rotating shaft 5, the eccentric pin 53, the drive bush 54, and the orbiting bearing 73, and the orbiting scroll 2 is prevented from rotating by the rotation prevention mechanism 3. It revolves and rotates.
すると、ガスが吸入管８２を経てハウジング８内に入り
、電動モータ４を冷却した後、固定スクロール１に設け
られた吸入通路１５から吸入室１６を経て固定スクロー
ル１と旋回スクロール２を噛み合せることによって限界
された複数の密閉空間２４内に吸入される。そして、旋
回スクロール２の公転旋回運動により密閉空間２４の容
積が減少するのに伴って圧縮されながら中央部に至り、
吐出ポート１３から吐出弁１７を押し上げて第１の吐出
キャビティ１４に吐出され、次いで、仕切壁３１に穿設
された穴１８を経て第２の吐出キャビティ１９に入り、
ここから吐出管８３を経て外部に吐出される。なお、８
４はドライブブツシュ５４に取り付けられたバランスウ
ェイトである。Then, the gas enters the housing 8 through the suction pipe 82, cools the electric motor 4, and then passes through the suction passage 15 provided in the fixed scroll 1 and the suction chamber 16, causing the fixed scroll 1 and the orbiting scroll 2 to engage with each other. is inhaled into a plurality of closed spaces 24 defined by. Then, as the volume of the closed space 24 decreases due to the orbiting movement of the orbiting scroll 2, it reaches the central part while being compressed.
The discharge valve 17 is pushed up from the discharge port 13 and the discharge is discharged into the first discharge cavity 14 , and then enters the second discharge cavity 19 through the hole 18 bored in the partition wall 31 .
From here, it is discharged to the outside via a discharge pipe 83. In addition, 8
4 is a balance weight attached to the drive bush 54.
（発明が解決しようとする課題）
上記従来のスクロール型圧縮機においては、吐出ポート
１３から吐出された高圧のガスが第１の吐出キャビティ
１４に入り、この吐出キャビティ１４内の高圧ガスが固
定スクロール１の端板１１の外面にその全面に亘って作
用してこれを中間に十数μ−程度変形させる。(Problems to be Solved by the Invention) In the conventional scroll compressor described above, the high pressure gas discharged from the discharge port 13 enters the first discharge cavity 14, and the high pressure gas in this discharge cavity 14 is transferred to the fixed scroll compressor. It acts on the entire outer surface of the end plate 11 of No. 1 and deforms it in the middle by about 10-odd microns.
かくして、端板１１の内面特にその中央部が旋回スクロ
ール２のうず巻体１２の先端と当接して所謂かじり現象
が発生するおそれがあった。As a result, there is a possibility that the inner surface of the end plate 11, particularly the central portion thereof, may come into contact with the tip of the spiral body 12 of the orbiting scroll 2, causing a so-called galling phenomenon.
（課題を解決しようとする手段）
本発明は上記課題を解決するために発明されたものであ
って、その要旨とするところは、それぞれ端板にうず巻
体を立設してなる一対の固定スクロールと旋回スクロー
ルとを噛合させてこれら両スクロールの間に旋回スクロ
ールの公転旋回運動によって容積が変化する密閉空間を
形成するとともに上記固定スクロールの端板の外側に高
圧流体室を形成してなるスクロール型流体機械において
、上記固定スクロールの端板と上記高圧流体室との間に
仕切壁を設けて、この仕切壁と上記固定スクロールの端
板との間に同端板に穿設された中間圧力導入孔を経て上
記密閉空間内の中間圧力流体が導入される中間圧力流体
室を形成したことを特徴とするスクロール型流体機械に
ある。(Means for Solving the Problems) The present invention was invented to solve the above problems, and its gist is to provide a pair of fixing devices each having a spiral body erected on each end plate. A scroll formed by meshing a scroll and an orbiting scroll to form a sealed space between the two scrolls whose volume changes due to the orbiting motion of the orbiting scroll, and a high-pressure fluid chamber formed outside the end plate of the fixed scroll. type fluid machine, a partition wall is provided between the end plate of the fixed scroll and the high pressure fluid chamber, and an intermediate pressure hole bored in the end plate is provided between the partition wall and the end plate of the fixed scroll. A scroll type fluid machine is characterized in that an intermediate pressure fluid chamber is formed into which intermediate pressure fluid in the closed space is introduced through an introduction hole.
（作用）
本発明においては、上記構成を具えているため、密閉空
間内の中間圧力流体が中間圧力導入孔を経て中間圧力流
体室内に導入され、固定スクロールの端板の外面に中間
圧力が作用する。(Function) Since the present invention has the above configuration, the intermediate pressure fluid in the closed space is introduced into the intermediate pressure fluid chamber through the intermediate pressure introduction hole, and intermediate pressure acts on the outer surface of the end plate of the fixed scroll. do.
（実施例） 本発明の１実施例が第１図に示されている。(Example) One embodiment of the invention is shown in FIG.
固定スクロール１の端板１１の上面に吐出ポート１３を
囲む筒状のボス３０が形成され、このボス３０の先端は
仕切壁３１の下面に封密的に当接している。A cylindrical boss 30 surrounding the discharge port 13 is formed on the upper surface of the end plate 11 of the fixed scroll 1, and the tip of the boss 30 is in sealing contact with the lower surface of the partition wall 31.
このボス３０の内周面と端板１１の外面と仕切壁３１の
内面とによって第１の吐出キャビティ３２が限界され、
この第１の吐出キャビティ３２内に吐出弁１７が配設さ
れている。The first discharge cavity 32 is limited by the inner peripheral surface of the boss 30, the outer surface of the end plate 11, and the inner surface of the partition wall 31,
A discharge valve 17 is disposed within this first discharge cavity 32 .
そして、端板１１の外面の外周に立設された円環状のフ
ランジ３４の内周面と円筒状のボス３０の外周面と端板
１１の外面と仕切壁３１の内面とによって環状の中間圧
力流体室３５が限界され、この中間圧力３≦
流体室３５は端板１１に穿設された中間圧力導入孔８４
を介して圧縮途中の密閉空間２４と連通している。An annular intermediate pressure is created by the inner circumferential surface of the annular flange 34 erected on the outer circumference of the end plate 11, the outer circumferential surface of the cylindrical boss 30, the outer surface of the end plate 11, and the inner surface of the partition wall 31. The fluid chamber 35 has a limit, and this intermediate pressure 3≦ The fluid chamber 35 has an intermediate pressure introduction hole 84 bored in the end plate 11.
It communicates with the closed space 24 which is in the middle of compression through.
他の構成は第２図に示す従来のものと同様であり、対応
する部材には同し符号が付されている。The rest of the structure is the same as the conventional one shown in FIG. 2, and corresponding members are given the same reference numerals.
しかして、圧縮機の運転中、密閉空間２４内の流体圧力
はうず巻の中心に向かうに従って増大固定スクロール１
の端板１１は密閉空間２４内の流体圧力によって上向に
押圧される。During operation of the compressor, the fluid pressure within the closed space 24 increases as it moves toward the center of the spiral.
The end plate 11 of is pressed upward by the fluid pressure within the closed space 24.
一方、圧縮途中の密閉空間２４内の中間圧力のガＢる
スが中間圧力導入孔１４を経て環状の中間圧力流体室３
５内に導入され、固定スクロール１の端板１１は中間圧
力流体室３５内の中間圧力流体によって下向に押圧され
る。On the other hand, gas at intermediate pressure in the closed space 24 during compression passes through the intermediate pressure introduction hole 14 into the annular intermediate pressure fluid chamber 3.
5 , and the end plate 11 of the fixed scroll 1 is pressed downward by the intermediate pressure fluid in the intermediate pressure fluid chamber 35 .
圧縮途中の密閉小室２４内の中間圧力 但し、ＬＰ は吸入圧力 ｖｔｈ は押し除は量 ■ は導入孔討に連通ずる密閉空間 の容積 に は断熱指数 で表され、この圧力肝は吸入圧力ＬＰに依存する。Intermediate pressure inside the closed chamber 24 during compression However, LP is suction pressure vth is the amount of displacement ■ is a closed space connected to the introduction hole volume of is the insulation index This pressure pressure depends on the suction pressure LP.
かくして、圧縮機の運転条件が変化しても中間圧力流体
室３５の流体によって端板１１を下向きに押圧する力と
密閉空間２４内の流体によって端板１１を上向きに押圧
する力との差を常時小さくできるので、端板１１の変形
を阻止又は軽減することができ（発明の効果）
本発明においては、固定スクロールの端板と高圧流体室
との間に仕切壁を設けて、この仕切壁と上記固定スクロ
ールの端板との間に同端板に穿設された中間圧力導入孔
を経て密閉空間内の中間圧力流体が導入される中間圧力
流体室を形成したため、固定スクロールの端板の外面に
は中間圧力が作用し、その端板の内面に作用する密閉空
間内の流体圧力を相殺する。In this way, even if the operating conditions of the compressor change, the difference between the force pressing the end plate 11 downward by the fluid in the intermediate pressure fluid chamber 35 and the force pressing the end plate 11 upward by the fluid in the closed space 24 can be maintained. Since it can be kept small at all times, deformation of the end plate 11 can be prevented or reduced (effects of the invention) In the present invention, a partition wall is provided between the end plate of the fixed scroll and the high pressure fluid chamber, and the partition wall An intermediate pressure fluid chamber is formed between the end plate of the fixed scroll and the intermediate pressure fluid in the sealed space is introduced through the intermediate pressure introduction hole bored in the end plate. An intermediate pressure acts on the outer surface to offset the fluid pressure within the enclosed space acting on the inner surface of the end plate.
この結果、固定スクロールの端板の変形を阻止又は軽減
できるので、固定スクロールの端板の内面と旋回スクロ
ールのうず巻体の先端との間の所謂かしり現象の発生を
防止して、スクロール型流体機械の信軌性を向上できる
。As a result, deformation of the end plate of the fixed scroll can be prevented or reduced, so that the occurrence of the so-called caulking phenomenon between the inner surface of the end plate of the fixed scroll and the tip of the spiral body of the orbiting scroll is prevented, and the scroll type The reliability of fluid machinery can be improved.
第１図は本発明の１実施例を示す部分的縦断面間、第２
図は従来のスクロール型圧縮機の縦断面図である。
固定スクロール−１、端板−１１、うず巻体−１２、旋
回スクロール−２、端板−２１、うず巻体−２２、密閉
空間 ２４、高圧流体室 １９、仕切壁Ｇ
間圧力導入孔−８４、中間圧力流体室 ３５３１、
中
第１ 図FIG. 1 shows an embodiment of the present invention between partial longitudinal sections,
The figure is a longitudinal sectional view of a conventional scroll compressor. Fixed scroll-1, end plate-11, spiral body-12, orbiting scroll-2, end plate-21, spiral body-22, sealed space 24, high-pressure fluid chamber 19, pressure introduction hole between partition wall G-84 , intermediate pressure fluid chamber 3531, Figure 1
Claims (1)
クロールと旋回スクロールとを噛合させてこれら両スク
ロールの間に旋回スクロールの公転旋回運動によって容
積が変化する密閉空間を形成するとともに上記固定スク
ロールの端板の外側に高圧流体室を形成してなるスクロ
ール型流体機械において、上記固定スクロールの端板と
上記高圧流体室との間に仕切壁を設けて、この仕切壁と
上記固定スクロールの端板との間に同端板に穿設された
中間圧力導入孔を経て上記密閉空間内の中間圧力流体が
導入される中間圧力流体室を形成したことを特徴とする
スクロール型流体機械。A pair of fixed scrolls each having a spiral body erected on an end plate and an orbiting scroll are meshed with each other to form a sealed space between the two scrolls whose volume changes according to the orbiting movement of the orbiting scroll, and the above-mentioned fixed scroll is meshed with the orbiting scroll. In a scroll-type fluid machine in which a high-pressure fluid chamber is formed outside the end plate of the scroll, a partition wall is provided between the end plate of the fixed scroll and the high-pressure fluid chamber, and a partition wall is provided between the end plate of the fixed scroll and the high-pressure fluid chamber. A scroll-type fluid machine characterized in that an intermediate pressure fluid chamber is formed between the end plate and the intermediate pressure fluid in the sealed space is introduced through an intermediate pressure introduction hole bored in the end plate.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2179062A JP2778808B2 (en) | 1990-07-06 | 1990-07-06 | Scroll compressor |
| EP91250141A EP0464970B1 (en) | 1990-07-06 | 1991-05-30 | Scroll type fluid machinery |
| DE69122809T DE69122809T2 (en) | 1990-07-06 | 1991-05-30 | Displacement machine based on the spiral principle |
| US07/708,714 US5186616A (en) | 1990-07-06 | 1991-05-31 | Scroll type fluid machinery with reduced pressure biasing the stationary scroll |
| CA002043933A CA2043933C (en) | 1990-07-06 | 1991-06-05 | Scroll type fluid machinery |
| AU78222/91A AU7822291A (en) | 1990-07-06 | 1991-06-06 | Scroll type fluid machinery |
| CN91104302A CN1019994C (en) | 1990-07-06 | 1991-06-29 | Scroll type fluid machinery |
| KR1019910011451A KR960000090B1 (en) | 1990-07-06 | 1991-07-06 | Scroll type fluid machinery |
| US07/972,911 US5330463A (en) | 1990-07-06 | 1992-11-06 | Scroll type fluid machinery with reduced pressure biasing the stationary scroll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2179062A JP2778808B2 (en) | 1990-07-06 | 1990-07-06 | Scroll compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0466701A true JPH0466701A (en) | 1992-03-03 |
| JP2778808B2 JP2778808B2 (en) | 1998-07-23 |
Family
ID=16059446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2179062A Expired - Fee Related JP2778808B2 (en) | 1990-07-06 | 1990-07-06 | Scroll compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2778808B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100416782B1 (en) * | 2001-08-20 | 2004-01-31 | 엘지전자 주식회사 | a scroll compressor |
| US9458847B2 (en) | 2005-10-26 | 2016-10-04 | Emerson Climate Technologies, Inc. | Scroll compressor having biasing system |
| WO2018207743A1 (en) * | 2017-05-12 | 2018-11-15 | ダイキン工業株式会社 | Scroll compressor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6463678A (en) * | 1987-09-04 | 1989-03-09 | Toshiba Corp | Scroll compressor |
| JPH02125986A (en) * | 1988-11-05 | 1990-05-14 | Daikin Ind Ltd | Scroll type compressor |
-
1990
- 1990-07-06 JP JP2179062A patent/JP2778808B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6463678A (en) * | 1987-09-04 | 1989-03-09 | Toshiba Corp | Scroll compressor |
| JPH02125986A (en) * | 1988-11-05 | 1990-05-14 | Daikin Ind Ltd | Scroll type compressor |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100416782B1 (en) * | 2001-08-20 | 2004-01-31 | 엘지전자 주식회사 | a scroll compressor |
| US9458847B2 (en) | 2005-10-26 | 2016-10-04 | Emerson Climate Technologies, Inc. | Scroll compressor having biasing system |
| WO2018207743A1 (en) * | 2017-05-12 | 2018-11-15 | ダイキン工業株式会社 | Scroll compressor |
| JP2018193869A (en) * | 2017-05-12 | 2018-12-06 | ダイキン工業株式会社 | Scroll compressor |
| CN110462216A (en) * | 2017-05-12 | 2019-11-15 | 大金工业株式会社 | Screw compressor |
| CN110462216B (en) * | 2017-05-12 | 2020-06-23 | 大金工业株式会社 | Scroll compressor having a plurality of scroll members |
| US11125232B2 (en) | 2017-05-12 | 2021-09-21 | Daikin Industries, Ltd. | Scroll compressor with cover member defining rear surface adjacent space |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2778808B2 (en) | 1998-07-23 |
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