JPH03516B2 - - Google Patents
Info
- Publication number
- JPH03516B2 JPH03516B2 JP22767285A JP22767285A JPH03516B2 JP H03516 B2 JPH03516 B2 JP H03516B2 JP 22767285 A JP22767285 A JP 22767285A JP 22767285 A JP22767285 A JP 22767285A JP H03516 B2 JPH03516 B2 JP H03516B2
- Authority
- JP
- Japan
- Prior art keywords
- spiral
- seal member
- scroll
- fluid
- side plate
- 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.)
- Expired
Links
- 238000007789 sealing Methods 0.000 claims description 20
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 239000012530 fluid Substances 0.000 description 19
- 230000007246 mechanism Effects 0.000 description 6
- 239000010687 lubricating oil Substances 0.000 description 5
- 239000003595 mist Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Rotary Pumps (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、一般にスクロール型圧縮機と呼ばれ
る容積式流体圧縮機、特にその圧縮空間をシール
するシール部材に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a positive displacement fluid compressor, generally called a scroll compressor, and particularly to a seal member for sealing a compression space thereof.
この種の圧縮機は、側板の一面上にうず巻体を
形成したスクロール部材を二つ含む。これらのス
クロール部材は、両うず巻体が互いに角度をずら
せてかみ合い、かつ側壁が互いに接触してうず巻
体間に密閉された圧縮空間即ち流体ポケツトを形
成するよう重ね合わされる。運転に際し、一方の
スクロール部材を自転を防止しながら円軌道運動
させることにより、流体ケツトをうず巻体の中心
方向へ容積の減少を伴なつて移動させる。この結
果、一方向性流体圧縮作用が得られる。（例えば、
米国特許第801182号明細書）。
This type of compressor includes two spiral members formed on one side of the side plate. The scroll members are stacked such that the spirals are intermeshing with each other and the side walls are in contact with each other to form a sealed compression space or fluid pocket between the spirals. During operation, one scroll member is caused to move in a circular orbit while being prevented from rotating, thereby moving the fluid bucket toward the center of the spiral body while reducing its volume. This results in a unidirectional fluid compression effect. (for example,
(U.S. Patent No. 801182).
ところで、二つのスクロール部材の夫々のうず
巻体の軸方向端部には普通、うず巻体の軸方向端
面とこれに対向した側板との隙間を塞ぐためにシ
ール部材が備えられている。一般的なシール部材
は、うず巻体の軸方向端面にうず巻に沿つて形成
した溝に嵌入されている。この種のシール機構と
して、両方のシール部材をいずれも軸方向で少し
可動であるように組み込み、うず巻体の溝の底部
に組み込んだばね部材の反発力、若しくは圧縮流
体による背圧によつて、そのシール部材を側板に
押しつけるものがある。（例えば、特開昭51−
117304号公報、実開昭57−83293号公報）。その場
合、圧縮機運転時にうず巻体の軸方向端面とこれ
に対向した側板とが摺動してしまうことを防止す
るために、これらの間に熱膨張を考慮した寸法の
軸方向間隔をもたせている。 Incidentally, a sealing member is usually provided at the axial end of each of the spiral bodies of the two scroll members in order to close the gap between the axial end surface of the spiral body and the side plate facing thereto. A typical sealing member is fitted into a groove formed along the spiral in the axial end face of the spiral wound body. This type of sealing mechanism incorporates both sealing members so that they are both slightly movable in the axial direction, and is operated by the repulsive force of a spring member incorporated at the bottom of the groove of the spiral body or by back pressure from compressed fluid. , there is one in which the sealing member is pressed against the side plate. (For example, JP-A-51-
117304, Utility Model Application Publication No. 57-83293). In that case, in order to prevent the axial end face of the spiral wound body and the side plate facing it from sliding during compressor operation, an axial distance of a size that takes thermal expansion into consideration is provided between them. ing.
ところでスクロール型圧縮機では、スクロール
部材のうず巻外周部分からうず巻中央部分に向つ
て流体がしだいに圧縮されていくので、うず巻外
周部分からうず巻中央部分へ向うにしたがつて流
体の圧力と温度は上昇していく。その結果、流体
はうず巻中央部分すなわち流体吐出孔近傍では温
度約150℃、圧力約30Kg／cm2Ｇ、を示す場合もあ
る。そのような場合には、背圧によつてシール部
材をスクロール部材側板に押しつけるシール機構
では、シール部材のうず巻中央部分は高い背圧を
高温下で受けてスクロール部材の側板上を摺動す
ることになるので、シール部材の損傷の危険性が
増大する。
By the way, in a scroll compressor, the fluid is gradually compressed from the spiral outer periphery to the spiral center of the scroll member, so the pressure of the fluid increases from the spiral outer periphery to the spiral center. and the temperature rises. As a result, the fluid may exhibit a temperature of about 150° C. and a pressure of about 30 Kg/cm 2 G at the center of the spiral, that is, near the fluid discharge hole. In such a case, in a seal mechanism that presses the seal member against the side plate of the scroll member by back pressure, the spiral center portion of the seal member receives high back pressure at high temperature and slides on the side plate of the scroll member. This increases the risk of damage to the sealing member.
それ故、本発明の目的は、上述のような損傷の
危険性を消去もしくは減少させたスクロール型圧
縮機用シール部材の提供にある。 SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a sealing member for a scroll compressor in which the risk of damage as described above is eliminated or reduced.
本発明によれば、スクロール型圧縮機のうず巻
体の先端に備えられ、圧縮空間をシールするうず
巻状のシール部材において、うず巻中央部分に複
数の貫通孔をうず巻の軸方向に平行にのびるよう
設けたことを特徴とするスクロール型圧縮機用シ
ール部材が得られる。
According to the present invention, in a spiral seal member that is provided at the tip of a spiral body of a scroll compressor and seals a compression space, a plurality of through holes are formed in the center of the spiral parallel to the axial direction of the spiral. A seal member for a scroll type compressor is obtained, which is characterized in that it is provided so as to extend over the entire length.
以下本発明を実施例を示す図面を参照して説明
する。
The present invention will be described below with reference to drawings showing embodiments.
第１図は本発明の一実施例によるシール部材を
用いたスクロール型圧縮機の縦断面図である。圧
縮機はフロントエンドプレート１１とこれに設置
されたカツプ状部分１２とから成る圧縮機ハウジ
ング１０を有している。 FIG. 1 is a longitudinal sectional view of a scroll compressor using a seal member according to an embodiment of the present invention. The compressor has a compressor housing 10 consisting of a front end plate 11 and a cup-shaped part 12 mounted thereon.
ハウジング１０の内部には、固定スクロール部
材１３と可動スクロール部材１４とが配設されて
いる。固定スクロール部材１３は、側板１３１
と、その一面上に形成したうず巻体１３２と、反
対面上に設けた脚部１３３とより構成されてい
る。固定スクロール部材１３は、カツプ状部分１
２を貫通して脚部１３３のねじ穴に螺合したボル
ト１５によつて、カツプ状部分１２の底部１２１
内壁上に固定されている。またカツプ状部分１２
内に固定された固定スクロール部材１３の側板１
３１は、その外周面とカツプ状部分１２の内壁面
間をシールすることにより、カツプ状部分１２の
内部空間を吐出室１６と吸入室１７とに仕切つて
いる。 A fixed scroll member 13 and a movable scroll member 14 are disposed inside the housing 10. The fixed scroll member 13 has a side plate 131
, a spiral body 132 formed on one surface thereof, and a leg portion 133 provided on the opposite surface. The fixed scroll member 13 has a cup-shaped portion 1
The bottom part 121 of the cup-shaped part 12 is secured to the bottom part 121 of the cup-shaped part 12 by a bolt 15 that passes through the bottom part 121 of the cup-shaped part 12 and is screwed into the threaded hole of the leg part 133.
Fixed on the inner wall. Also, the cup-shaped part 12
Side plate 1 of fixed scroll member 13 fixed inside
31 partitions the internal space of the cup-shaped portion 12 into a discharge chamber 16 and a suction chamber 17 by sealing between its outer peripheral surface and the inner wall surface of the cup-shaped portion 12 .
可動スクロール部材１４は、側板１４１とその
一面上に形成したうず巻体１４２より構成されて
いる。可動スクロール部材１４のうず巻体１４２
は固体スクロール部材１３のうず巻体１３２に対
し、所定の圧縮作用を行なえるように組合わされ
ている。フロントエンドプレート１１には主軸１
８が回転自在となるよう貫通支承されている。可
動スクロール部材１４は主軸１８の回転にしたが
つて自転することなく公転運動する如く、主軸１
８に接合されている。可動スクロール部材１４の
自転を禁止しつつ公転運動をさせる機構について
は、種々の公知機構にて実施され得るため詳細な
説明は省略する。 The movable scroll member 14 includes a side plate 141 and a spiral body 142 formed on one side thereof. Spiral body 142 of movable scroll member 14
are combined so as to be able to perform a predetermined compression action on the spiral body 132 of the solid scroll member 13. The front end plate 11 has a main shaft 1
8 is supported through the shaft so as to be rotatable. The movable scroll member 14 revolves around the main shaft 18 without rotating as the main shaft 18 rotates.
8. A detailed explanation of the mechanism for causing the movable scroll member 14 to revolve while inhibiting its rotation will be omitted since it can be implemented by various known mechanisms.
可動スクロール部材１４が駆動されると、カツ
プ状部分１２上に形成した吸入ポート１９からハ
ウジング１０内の吸入室１７に流入した流体は両
うず巻体１３２，１４２間に形成される流体ポケ
ツトに取り込まれる。この流体は、圧縮流体の他
に、圧縮機の可動部分および摺動部分を円滑に作
動させるための潤滑油を含む。潤滑油は主軸１８
の回転やこれに伴う可動スクロール部材１４の運
動によつてミスト化され、圧縮流体と同一相とな
る。流体はさらに、可動スクロール部材１４の運
動に伴なつて徐々に圧縮されつつ中央部へ送られ
る。流体は最後に、固体スクロール部材１３の側
板１３１上に穿設した吐出口１３５から吐出室１
６へ圧送され、さらに吐出ポート２０からハウジ
ング１０外へ送り出される。 When the movable scroll member 14 is driven, fluid flowing into the suction chamber 17 in the housing 10 from the suction port 19 formed on the cup-shaped portion 12 is taken into the fluid pocket formed between the spiral bodies 132 and 142. It will be done. In addition to compressed fluid, this fluid includes lubricating oil for smoothly operating the movable and sliding parts of the compressor. Lubricating oil is on the main shaft 18
The rotation of the mist and the accompanying movement of the movable scroll member 14 turn the mist into a mist, which has the same phase as the compressed fluid. Further, as the movable scroll member 14 moves, the fluid is gradually compressed and sent to the center. Finally, the fluid enters the discharge chamber 1 through a discharge port 135 formed on the side plate 131 of the solid scroll member 13.
6, and further sent out of the housing 10 from the discharge port 20.
第１図に加えて第２図をも参照して、固体スク
ロール部材１３の側板１３１から突出したうず巻
体１３２の先端面即ち軸方向端面には、うず巻形
状に沿つて延びた溝１３４を形成する。溝１３４
にはそのうず巻形状とほぼ同じうず巻形状のシー
ル部材２２を嵌入させる。可動スクロール部材１
４の側板１４１から突出したうず巻体１４２の先
端にもうず巻状の溝を形成し、この溝にシール部
材２３を嵌入させる。ここで両方のシール部材２
２，２３は互いに同一の形状及び寸法を有したも
のでよく、それ故、以下では一方のシール部材２
２についてのみ説明する。 Referring to FIG. 2 in addition to FIG. 1, a groove 134 extending along the spiral shape is formed on the tip end surface, that is, the axial end surface of the spiral body 132 protruding from the side plate 131 of the solid scroll member 13. Form. Groove 134
A sealing member 22 having a spiral shape that is almost the same as the spiral shape is fitted into the hole. Movable scroll member 1
A spiral groove is also formed at the tip of the spiral body 142 protruding from the side plate 141 of No. 4, and the sealing member 23 is fitted into this groove. Here, both seal members 2
2 and 23 may have the same shape and dimensions, therefore, in the following, only one seal member 2 will be used.
Only 2 will be explained.
さらに第３図をも参照して、シール部材２２は
横断面角形のものであり、その幅と厚みを、うず
巻体１３２の溝１３４の溝幅と溝深さよりもそれ
ぞれ少しだけ小さく作られている。シール部材２
２のうず巻中央部分にはうず巻に沿つて互いに間
隔をおいた複数の貫通孔３２が形成されている。
貫通孔３２の夫々は、横断面円形であり、かつシ
ール部材２２の延在平面に対し垂直な方向（即
ち、うず巻の基礎円の中心軸線と平行な方向）に
のびるよう形成されている。各貫通孔３２の両端
はテーパ状に少し広げられている。 Further, referring to FIG. 3, the seal member 22 has a rectangular cross section, and its width and thickness are made slightly smaller than the groove width and groove depth of the groove 134 of the spiral body 132. There is. Seal member 2
A plurality of through holes 32 are formed at the center of the spiral 2 at intervals along the spiral.
Each of the through holes 32 has a circular cross section and is formed to extend in a direction perpendicular to the plane of extension of the seal member 22 (that is, in a direction parallel to the central axis of the base circle of the spiral). Both ends of each through hole 32 are tapered and slightly widened.
さらに第４図を参照して、一方のシール部材２
２を用いたシール機構の作用について説明する。 Further, with reference to FIG. 4, one seal member 2
The operation of the sealing mechanism using No. 2 will be explained.
第４図では、P1側がP2側に対してより中央部
にあるものとする。したがつて流体の圧力及び温
度はいずれもP1側の方がP2側よりも高い。この
結果、シール部材２２はP1側とP2側との差圧を
背圧として受け、可動スクロール部材１４の側板
１４１に圧接され、同時に、溝１３４のP2側の
側壁へ圧接される。一方、シール部材２２の底面
と溝１３４の底面との間、及びシール部材２２の
側壁と溝１３４のP1側の側壁との間には、それ
ぞれ間隙G1，G2を生じる。したがつて、圧縮空
間に存在するミスト状潤滑油を含む圧縮流体は、
この間隙G1，G2を通り、そしてうず巻中央部分
においてはシール部材２２の貫通孔３２を通過し
てシール部材２２と固定スクロール部材１４の側
板１４１との摺動面へと導かれ、両者の摺動をそ
の潤滑性によつて大幅に柔らげることになる。こ
こで貫通孔３２の両端はテーパー状になつている
ので、ミスト状潤滑油が貫通孔３２に流入しやす
く、かつ上述の摺動面により広い範囲で導かれる
ことになる。 In FIG. 4, it is assumed that the P 1 side is more central than the P 2 side. Therefore, both the pressure and temperature of the fluid are higher on the P1 side than on the P2 side. As a result, the seal member 22 receives the differential pressure between the P 1 side and the P 2 side as a back pressure, and is pressed against the side plate 141 of the movable scroll member 14 and, at the same time, against the side wall of the groove 134 on the P 2 side. On the other hand, gaps G 1 and G 2 are created between the bottom surface of the seal member 22 and the bottom surface of the groove 134 and between the side wall of the seal member 22 and the side wall of the groove 134 on the P 1 side, respectively. Therefore, the compressed fluid containing mist lubricating oil existing in the compression space is
It passes through the gaps G 1 and G 2 , and in the central part of the spiral, passes through the through hole 32 of the seal member 22 and is guided to the sliding surface between the seal member 22 and the side plate 141 of the fixed scroll member 14 , and both Its lubricity greatly softens the sliding motion of the surface. Since both ends of the through hole 32 are tapered, the lubricating oil mist easily flows into the through hole 32 and is guided over a wide range by the above-mentioned sliding surface.
シール部材２２の貫通孔３２は、第５図に示す
ように、横断面長円形であつてもよい。その場合
にも、貫通孔３２の両端をテーパ状に少し広げる
ことは好ましい。 The through hole 32 of the seal member 22 may have an oval cross section, as shown in FIG. Even in that case, it is preferable that both ends of the through hole 32 be slightly widened in a tapered shape.
他方のシール部材２３を用いたシール機構も、
上述と同様に作用することはいうまでもない。 The sealing mechanism using the other sealing member 23 also
Needless to say, it works in the same way as described above.
上述のシール部材２２，２３はいずれもプラス
チツクの射出成形にて作ることができるので、量
産性の向上を計ることができる。 Since both of the seal members 22 and 23 described above can be made by injection molding of plastic, it is possible to improve mass productivity.
なお、上述の他にも、例えば貫通孔３２の数や
位置などについて各種の設計変更が可能なことは
いうまでもない。 In addition to the above, it goes without saying that various design changes can be made, for example, regarding the number and position of the through holes 32.
以上説明したように、本発明のスクロール型圧
縮機用シール部材によれば、使用時にうず巻体中
央部分で高い背圧を受け、対向するスクロール部
材の側板に強く押しつけられて摺動しても、圧縮
流体に含まれる潤滑油がその摺動面に比較的多量
に供給されるので、良好な潤滑性が得られ、した
がつて損傷の危険が消去若しくは減少する。
As explained above, according to the sealing member for a scroll type compressor of the present invention, when in use, the spiral body is subjected to high back pressure at the central portion, and even if it is strongly pressed against the side plate of the opposing scroll member and slides. Since the lubricating oil contained in the compressed fluid is supplied to the sliding surfaces in relatively large quantities, good lubricity is obtained and the risk of damage is therefore eliminated or reduced.
第１図は本発明によるシール部材を用いたスク
ロール型圧縮機の縦断面図、第２図は固定スクロ
ール部材とシール部材とを示した分解斜視図、第
３図は本発明によるシール部材の一実施例を示
し、ａは正面図、ｂはB3−B3断面図、ｃはC3−
C3断面図、第４図はシール部材の組込み状態を
示す断面図、第５図は本発明によるシール部材の
他の実施例を示し、ａは正面図、ｂはB5−B5断
面図、ｃはC5−C5断面図である。
１３……固定スクロール部材、１３１……側
板、１３２……うず巻体、１３４……溝、１４…
…可動スクロール部材、１４１……側板、１４２
……うず巻体、２２，２３……シール部材、３２
……貫通孔。
FIG. 1 is a longitudinal sectional view of a scroll compressor using a seal member according to the present invention, FIG. 2 is an exploded perspective view showing a fixed scroll member and a seal member, and FIG. 3 is an illustration of a seal member according to the present invention. Examples are shown, a is a front view, b is a B 3 - B 3 sectional view, and c is a C 3 -
C3 sectional view, FIG. 4 is a sectional view showing the assembled state of the sealing member, and FIG. 5 shows another embodiment of the sealing member according to the present invention, a is a front view, and b is a B5 - B5 sectional view. , c is a C5 - C5 sectional view. 13... Fixed scroll member, 131... Side plate, 132... Spiral body, 134... Groove, 14...
...Movable scroll member, 141...Side plate, 142
... Spiral body, 22, 23 ... Seal member, 32
...through hole.
Claims (1)
られ、圧縮空間をシールするうず巻状のシール部
材において、うず巻中央部分に複数の貫通孔をう
ず巻の軸方向に平行にのびるよう設けたことを特
徴とするスクロール型圧縮機用シール部材。 ２ 上記貫通孔はその断面形状が円形のものであ
ることを特徴とする特許請求の範囲第１項記載の
スクロール型圧縮機用シール部材。 ３ 上記貫通孔はその断面形状が長円形のもので
あることを特徴とする特許請求の範囲第１項記載
のスクロール型圧縮機用シール部材。 ４ 上記貫通孔はその両端の径が拡大されている
ことを特徴とする特許請求の範囲第１〜３項のい
ずれかに記載のスクロール型圧縮機用シール部
材。[Claims] 1. In a spiral sealing member provided at the tip of a spiral body of a scroll compressor and sealing a compression space, a plurality of through holes are formed in the center of the spiral in the axial direction of the spiral. A seal member for a scroll type compressor, characterized in that it is provided so as to extend in parallel. 2. The seal member for a scroll compressor according to claim 1, wherein the through hole has a circular cross-sectional shape. 3. The sealing member for a scroll compressor according to claim 1, wherein the through hole has an oval cross-sectional shape. 4. The seal member for a scroll compressor according to any one of claims 1 to 3, wherein the through hole has an enlarged diameter at both ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22767285A JPS6287684A (en) | 1985-10-15 | 1985-10-15 | Seal member for scroll type compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22767285A JPS6287684A (en) | 1985-10-15 | 1985-10-15 | Seal member for scroll type compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6287684A JPS6287684A (en) | 1987-04-22 |
| JPH03516B2 true JPH03516B2 (en) | 1991-01-08 |
Family
ID=16864518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22767285A Granted JPS6287684A (en) | 1985-10-15 | 1985-10-15 | Seal member for scroll type compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6287684A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023017776A1 (en) * | 2021-08-10 | 2023-02-16 | アネスト岩田株式会社 | Tip seal member and scroll fluid machine |
-
1985
- 1985-10-15 JP JP22767285A patent/JPS6287684A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6287684A (en) | 1987-04-22 |
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