JPH034760B2 - - Google Patents
Info
- Publication number
- JPH034760B2 JPH034760B2 JP63174952A JP17495288A JPH034760B2 JP H034760 B2 JPH034760 B2 JP H034760B2 JP 63174952 A JP63174952 A JP 63174952A JP 17495288 A JP17495288 A JP 17495288A JP H034760 B2 JPH034760 B2 JP H034760B2
- Authority
- JP
- Japan
- Prior art keywords
- center housing
- air
- chamber
- rotating sleeve
- contact
- 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 - Lifetime
Links
- 238000009423 ventilation Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000012661 Dyskinesia Diseases 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F04C18/348—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the vanes positively engaging, with circumferential play, an outer rotatable member
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Description
【発明の詳細な説明】
本発明は内燃機関の過給機として使用し得るベ
ーン型回転圧縮機に関するものであり、さらに詳
言するとセンターハウジングとロータの間にベー
ンと共に回転するスリーブを備えた回転圧縮機の
改良に係わるものである。Detailed Description of the Invention The present invention relates to a vane-type rotary compressor that can be used as a supercharger for an internal combustion engine, and more specifically, the present invention relates to a vane-type rotary compressor that can be used as a supercharger for an internal combustion engine. This relates to the improvement of compressors.
ロータとセンターハウジングの間に回転スリー
ブを介在させ、その回転スリーブを空気等の圧縮
性流体で支持してベーンと共に回転させるベーン
型回転圧縮機は、ベーン先端の摺動とそれに伴う
摩擦がないため、低速から高速までの広い範囲の
回転数で運転される自動車エンジン等の過給機と
して適している。しかし、内部の吐出側の作動室
の圧力により回転スリーブが吐出側に寄つてセン
ターハウジングに接触すると、接触個所にスカツ
フイングを生じ、回転スリーブの回転に支障をき
たすおそれがある。そこで、回転スリーブの吐出
側への寄りを解明したところ、回転スリーブは直
線的に吐出側へ寄るのではなく、中心がダ円を描
きながら吐出側へ寄ることが明らかになつた。こ
のことから回転スリーブ外周面はセンターハウジ
ング内周面の一個所で接触するのではなく、幅の
ある領域で接触することが判明した。さらに、こ
の接触領域はベーンの枚数、ポートの位置等に左
右されることもわかつた。例えば、四枚のベーン
の場合、一枚のベーンが吐出ポートをまたぐと、
そのベーンの前後の作動室が連通し、それまで最
大の圧力となつていた前方の作動室が後方の作動
室と連通するために圧力が急低下する。その時、
回転スリーブが異常な動作をするので、センター
ハウジングとの接触も起きるが、その接触領域は
ベーンの前後の作動室の領域となる。 A vane-type rotary compressor has a rotating sleeve interposed between the rotor and center housing, supports the rotating sleeve with compressible fluid such as air, and rotates together with the vane. This eliminates the sliding of the vane tip and the accompanying friction. It is suitable as a supercharger for automobile engines, etc., which are operated at a wide range of rotation speeds from low to high speeds. However, if the rotary sleeve moves toward the discharge side and contacts the center housing due to the pressure in the internal working chamber on the discharge side, scuffing may occur at the contact location, which may impede the rotation of the rotary sleeve. When we investigated the movement of the rotating sleeve toward the discharge side, we found that the rotating sleeve does not move linearly toward the discharge side, but moves toward the discharge side while its center draws a circle. From this, it has been found that the outer circumferential surface of the rotating sleeve does not come into contact with the inner circumferential surface of the center housing at one location, but rather in a wide area. Furthermore, it was found that this contact area depends on the number of vanes, the position of the ports, etc. For example, in the case of four vanes, if one vane straddles the discharge port,
The front and rear working chambers of the vane communicate with each other, and the pressure in the front working chamber, which had been at its highest until then, now communicates with the rear working chamber, causing a sudden drop in pressure. At that time,
Due to the abnormal movement of the rotating sleeve, contact with the center housing also occurs, but the area of contact is in the area of the working chambers before and after the vanes.
この接触を防止するため、流入口を設けて、吐
出室若しくは吐出室に通気直前の隣合う二枚のベ
ーンにより仕切られた作動室の圧力空気をセンタ
ーハウジング内周面吐出側の接触領域に導入する
と、接触領域における回転スリーブとセンターハ
ウジング内周面の接触は防止されるが、接触領域
を流れる空気量が増大しすぎると、センターハウ
ジング内周面の吸入側において回転スリーブとの
接触が生ずるという問題が生ずる。 In order to prevent this contact, an inlet is provided to introduce pressurized air from the discharge chamber or the working chamber partitioned by two adjacent vanes immediately before ventilation into the contact area on the discharge side of the inner peripheral surface of the center housing. This prevents contact between the rotating sleeve and the inner circumferential surface of the center housing in the contact area, but if the amount of air flowing through the contact area increases too much, contact with the rotating sleeve will occur on the suction side of the inner circumferential surface of the center housing. A problem arises.
本発明の課題は接触領域を流れる空気量が増大
しても回転スリーブが吸入側のセンターハウジン
グ内周面に接触するおそれのない回転圧縮機を提
供することにある。 An object of the present invention is to provide a rotary compressor in which there is no risk of the rotary sleeve coming into contact with the inner peripheral surface of the center housing on the suction side even if the amount of air flowing through the contact area increases.
前記課題を達成するため本発明の回転圧縮機は
センターハウジング内周面に大気又は吐出室若し
くは吐出室に通気直前前の隣合う二枚のベーンに
より仕切られた作動室と連通する流入口を設けて
センターハウジングと回転スリーブの間の空気軸
受室に空気を流入させ、センターハウジング内周
面吐出側の空気軸受室が最大圧を受ける位置と、
センターハウジング内周面吸入側の対称な位置及
びその対称な位置から左右に同角度ずれた位置の
いずれか一方又は双方にバランス溝を設け、回転
スリーブが接触するセンターハウジング内周面上
の接触領域を流れる空気量とバランス溝位置の圧
力を共に増大して空気軸受効果を高めることによ
り、回転スリーブがセンターハウジングの内周面
に接触することを防止する。接触領域を通過した
空気の一部を外部へ放出するため、センターハウ
ジング内周面に大気又は吸入室と連通する流出口
を設けることが望ましい。 In order to achieve the above object, the rotary compressor of the present invention is provided with an inlet on the inner circumferential surface of the center housing that communicates with the atmosphere, a discharge chamber, or a working chamber partitioned by two adjacent vanes just before ventilation in the discharge chamber. a position where air flows into the air bearing chamber between the center housing and the rotating sleeve, and the air bearing chamber on the discharge side of the inner peripheral surface of the center housing receives maximum pressure;
A balance groove is provided at a symmetrical position on the suction side of the inner circumferential surface of the center housing, and at a position shifted by the same angle to the left and right from the symmetrical position, or both, and a contact area on the inner circumferential surface of the center housing where the rotating sleeve comes into contact. By increasing both the amount of air flowing through the center housing and the pressure at the balance groove position to enhance the air bearing effect, the rotating sleeve is prevented from coming into contact with the inner circumferential surface of the center housing. In order to release a portion of the air that has passed through the contact area to the outside, it is desirable to provide an outlet in the inner peripheral surface of the center housing that communicates with the atmosphere or the suction chamber.
本発明の回転圧縮気を図面に示す実施例に基づ
いて説明する。第１図及び第３図に示すように、
圧縮機のロータ１０と一体の回転軸１２はフロン
ト及びリヤサイドハウジング２１，２３内のベア
リング１８，１９に軸受けされ、そのフロント側
の軸端には、エンジンの回転駆動を受けるプーリ
１４が取付けられる。ロータ１０の複数個のベー
ン溝１５にはそれぞれベーン１６が出入自在に嵌
装され、ベーン１６の先端はロータ１０を囲む回
転スリーブ３０に接する。回転スリーブ３０はセ
ンターハウジング２２に内装されるが、両者の間
には薄膜状の空気軸受室４０が介在する。リヤサ
イドハウジング２３の背面にリヤカバー２４がガ
スケツトを介して固定され、そのリヤカバーには
吐出室４１と吸入室５１が設けられる。吐出室４
１は吐出弁６０を介して吐出孔４２と連通し、そ
の吐出孔はロータ１０と回転スリーブ３０の間の
吐出側作動室４３と連通する。吸入室５１は吸入
孔５２を介して反対側の吸入側作動５３に連通す
る。フロント及びリヤサイドハウジング２１，２
３の回転スリーブ３０との摺動面に環状溝２６を
設けその中に無潤滑摺動部材２５を嵌着する。ボ
ルト２７はセンターハウジング２２の肉厚部２８
を貫通し、フロント及びリヤハウジング２１，２
３、センターハウジング２２、リヤカバー２４を
軸方向に締着する。 The rotary compressed air of the present invention will be explained based on an embodiment shown in the drawings. As shown in Figures 1 and 3,
A rotary shaft 12 integral with the rotor 10 of the compressor is supported by bearings 18 and 19 in front and rear side housings 21 and 23, and a pulley 14 that receives the rotational drive of the engine is attached to the front end of the shaft. A vane 16 is fitted into each of the plurality of vane grooves 15 of the rotor 10 so as to be removable and removable, and the tip of the vane 16 contacts a rotating sleeve 30 surrounding the rotor 10 . The rotating sleeve 30 is housed inside the center housing 22, and a thin film-like air bearing chamber 40 is interposed between the two. A rear cover 24 is fixed to the back surface of the rear side housing 23 via a gasket, and a discharge chamber 41 and a suction chamber 51 are provided in the rear cover. Discharge chamber 4
1 communicates with a discharge hole 42 via a discharge valve 60, and the discharge hole communicates with a discharge side working chamber 43 between the rotor 10 and the rotating sleeve 30. The suction chamber 51 communicates with a suction side actuator 53 on the opposite side via a suction hole 52 . Front and rear side housings 21, 2
An annular groove 26 is provided on the sliding surface with the rotating sleeve 30 of No. 3, and the non-lubricated sliding member 25 is fitted into the annular groove 26. The bolt 27 is attached to the thick part 28 of the center housing 22.
through the front and rear housings 21, 2
3. Tighten the center housing 22 and rear cover 24 in the axial direction.
第２図に示すように、吐出室４１と吸入室５２
からリヤサイドハウジング２３を通りセンターハ
ウジング２２の端面に至る高圧孔４４と低圧孔４
５を穿設し、その高圧孔と低圧孔に接するセンタ
ーハウジング２２の端面から軸方向に延びる流入
口７１と流入口７２をそれぞれ設ける。流入口７
１と流出口７２はセンターハウジング２２の内周
面に溝状に開口しそれぞれリヤサイドハウジング
２３の高圧孔４４と低圧孔５４と連通する。回転
スリーブ３０が接触するセンターハウジング２２
の内周面上の接触領域は吐出側にあるから、第３
図に示すように、流入口７１と流出口７２を吐出
側の始端と終端に設けると、接触領域の空気流は
増大する。しかし、接触領域の位置が始めから決
定し得る場合は、接触領域に合わせて流入口と流
出口を設ける。 As shown in FIG. 2, a discharge chamber 41 and a suction chamber 52
A high pressure hole 44 and a low pressure hole 4 extend from the rear side housing 23 to the end surface of the center housing 22.
5, and an inlet 71 and an inlet 72 extending axially from the end surface of the center housing 22 in contact with the high pressure hole and the low pressure hole, respectively. Inlet 7
1 and the outlet 72 are groove-shaped openings on the inner peripheral surface of the center housing 22 and communicate with the high pressure hole 44 and the low pressure hole 54 of the rear side housing 23, respectively. Center housing 22 with which rotating sleeve 30 contacts
Since the contact area on the inner circumferential surface of is on the discharge side, the third
As shown in the figure, when an inlet 71 and an outlet 72 are provided at the beginning and end of the discharge side, the air flow in the contact area is increased. However, if the position of the contact area can be determined from the beginning, the inlet and outlet are provided in accordance with the contact area.
高速回転時の回転スリーブ３０は流入口７１に
対して吸引作用をするので、流入口７１を大気に
接続して外部の空気を流入口から吸入してもよ
い。接触領域を流れた空気は回転スリーブ３０の
端面から吸入側の作動室に入ることができるの
で、流出口７２は省略してもよい。又、第４図に
示すように、流出口の代りに細長い矩形溝の空気
ため溝７２２を設けてもよい。 Since the rotating sleeve 30 during high-speed rotation exerts a suction action on the inlet 71, the inlet 71 may be connected to the atmosphere and external air may be sucked in from the inlet. Since the air flowing through the contact area can enter the working chamber on the suction side from the end face of the rotary sleeve 30, the outlet 72 may be omitted. Further, as shown in FIG. 4, an elongated rectangular air groove 722 may be provided instead of the outlet.
第３図に示すように、センターハウジング内周
面上の空気軸受室４０が最大圧を受ける位置Ｐ１
の対称位置Ｐ２と、その位置Ｐ２から同角度左右
に移動した位置のいずれか一方又は双方にバラン
ス溝９を設ける。このバランス溝９は、第４図に
示す空気ため溝と同様な形を有する溝であり、こ
のバランス溝９を設けることによつて、そのバラ
ンス溝位置の圧力を高め、回転スリーブを支承さ
せる。 As shown in FIG. 3, a position P1 where the air bearing chamber 40 on the inner peripheral surface of the center housing receives maximum pressure.
A balance groove 9 is provided at either or both of a symmetrical position P2 and a position moved left and right by the same angle from the position P2. This balance groove 9 is a groove having a similar shape to the air reservoir groove shown in FIG. 4, and by providing this balance groove 9, the pressure at the position of the balance groove is increased and the rotating sleeve is supported.
流入口７１と流出口７２は製作上、第５図に示
すような細長い短形溝の形にするか、又は、第６
図に示すような二等辺三角形の溝の形にするか、
あるいは、第７図に示すようなジグザグ状の溝の
形にするか、もしくは、第８図と第９図に示すよ
うな中央にランド部７１１を有する細長い矩形の
溝７１にして軸方向に設けられた盲穴と連通させ
た形にすることが望ましいが、軸方向の盲穴に複
数の噴出孔を穿設した形状にするすることも可能
である。 The inlet 71 and the outlet 72 are manufactured in the form of elongated rectangular grooves as shown in FIG.
Either form the groove into an isosceles triangle as shown in the figure, or
Alternatively, it may be formed into a zigzag groove as shown in FIG. 7, or an elongated rectangular groove 71 having a land portion 711 in the center as shown in FIGS. 8 and 9. Although it is desirable to have a shape that communicates with a blind hole in the axial direction, it is also possible to have a shape in which a plurality of ejection holes are bored in the blind hole in the axial direction.
回転圧縮機を作動させると、吐出側の作動室４
３が高圧になり回転スリーブ３０を吐出側へ押圧
する。この押圧力はベーン１６の位置により変化
するので、回転スリーブ３０の中心はダ円を描き
外周面はセンターハウジング２２の内周面の吐出
側の接触領域において接触しようとするが、流入
口７１から吸引された外部の空気により増加した
空気流とバランス溝９により高められた空気圧が
空気軸受室４０の接触領域の空気軸受負荷力を増
大させ、回転スリーブ３０がセンターハウジング
２２の内周面に接触することを阻止する。回転ス
リーブ３０は接触領域の負荷力が増大した空気軸
受室４０に支承されるから、センターハウジング
２２の内周面には接触せずに円滑に回転する。接
触領域を流れた空気の一部は流出口７２を経て外
部へ抜ける。 When the rotary compressor is operated, the working chamber 4 on the discharge side
3 becomes high pressure and presses the rotating sleeve 30 toward the discharge side. Since this pressing force changes depending on the position of the vane 16, the center of the rotating sleeve 30 draws a circle and the outer circumferential surface tries to come into contact with the inner circumferential surface of the center housing 22 in the contact area on the discharge side. The increased air flow due to the sucked external air and the increased air pressure due to the balance groove 9 increase the air bearing load force in the contact area of the air bearing chamber 40, and the rotating sleeve 30 comes into contact with the inner circumferential surface of the center housing 22. prevent something from happening. Since the rotating sleeve 30 is supported by the air bearing chamber 40 with increased load force in the contact area, it rotates smoothly without contacting the inner circumferential surface of the center housing 22. A portion of the air flowing through the contact area escapes to the outside through the outlet 72.
上記の通り、本発明の回転圧縮機においては、
流入口から導入した空気により空気軸受室の接触
領域の負荷力を一層増大させて回転スリーブ外周
面とセンターハウジング吐出側内周面に接触を防
止すると共に、吸入側のバランス溝により回転ス
リーブ外周面のセンターハウジング吸入側内周面
への接触も防止するので、回転数に急激な変動を
生じた場合でも、回転スリーブは異常な動きをせ
ず、常に円滑に作動するため、一層良好なスカツ
フイング防止効果が得られる。 As mentioned above, in the rotary compressor of the present invention,
The air introduced from the inlet further increases the load force on the contact area of the air bearing chamber to prevent contact between the outer peripheral surface of the rotating sleeve and the inner peripheral surface on the discharge side of the center housing, and the balance groove on the suction side further increases the load force on the contact area of the air bearing chamber. This prevents contact with the inner peripheral surface of the center housing suction side, so even if there is a sudden change in rotational speed, the rotating sleeve does not move abnormally and always operates smoothly, further preventing scuffing. Effects can be obtained.
第１図は本発明の一実施例の回転圧縮機の斜視
図、第２図は第１図の回転圧縮機の断面図、第３
図は第２図の−線に沿う断面を90度回して示
す図、第４図はセンターハウジングの部分展開
図、第５図ないし第９図は他の実施例の第４図に
相当する図である。
１０：ロータ、１６：ベーン、２２：センター
ハウジング、３０：回転スリーブ、４０：空気軸
受室、４１：吐出室、５１：吸入室、７１：流入
口、７２：流出口、９：バランス溝。
FIG. 1 is a perspective view of a rotary compressor according to an embodiment of the present invention, FIG. 2 is a sectional view of the rotary compressor of FIG. 1, and FIG.
The figure shows the cross section taken along the - line in Figure 2 rotated by 90 degrees, Figure 4 is a partially exploded view of the center housing, and Figures 5 to 9 are views corresponding to Figure 4 of other embodiments. It is. 10: rotor, 16: vane, 22: center housing, 30: rotating sleeve, 40: air bearing chamber, 41: discharge chamber, 51: suction chamber, 71: inlet, 72: outlet, 9: balance groove.
Claims (1)
転スリーブと、前記回転スリーブの偏心位置にお
いて回転するロータと、前記ロータに出入自在に
嵌装したベーンとを備えた回転圧縮機において、
前記センターハウジングの内周面に大気又は吐出
室若しくは前記吐出室に通気直前の隣合う二枚の
前記ベーンにより仕切られた作動室と連通する流
入口を設け、前記流入口を通じて前記センターハ
ウジングと前記回転スリーブの間に形成される空
気軸受室へ空気を送入して前記回転スリーブが接
触しようとする前記センターハウジング内周面の
接触領域の空気流を増大させ、前記センターハウ
ジング内周面上の前記空気軸受室が最大圧を受け
る位置と対称な位置及びその対称な位置から左右
に同角度ずれた位置のいずれか一方又は双方にバ
ランス溝を設けたことを特徴とする回転圧縮機。1. A rotary compressor comprising a rotary sleeve rotatably supported on a center housing, a rotor rotating at an eccentric position of the rotary sleeve, and a vane fitted into the rotor so as to be removable and removable,
An inlet is provided on the inner circumferential surface of the center housing to communicate with the atmosphere, a discharge chamber, or a working chamber partitioned by two adjacent vanes immediately before ventilation in the discharge chamber, and through the inlet, the center housing and the Air is introduced into the air bearing chamber formed between the rotating sleeves to increase the air flow in the contact area of the inner circumferential surface of the center housing where the rotating sleeves are about to come into contact with each other. A rotary compressor characterized in that a balance groove is provided at one or both of a position symmetrical to the position where the air bearing chamber receives maximum pressure and a position shifted from the symmetrical position by the same angle to the left and right.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17495288A JPS6435094A (en) | 1988-07-15 | 1988-07-15 | Rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17495288A JPS6435094A (en) | 1988-07-15 | 1988-07-15 | Rotary compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6435094A JPS6435094A (en) | 1989-02-06 |
| JPH034760B2 true JPH034760B2 (en) | 1991-01-23 |
Family
ID=15987604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17495288A Granted JPS6435094A (en) | 1988-07-15 | 1988-07-15 | Rotary compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6435094A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3913908A1 (en) * | 1989-04-27 | 1990-10-31 | Schmid & Wezel | COMPRESSED AIR BLADE MOTOR |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59105990A (en) * | 1982-12-11 | 1984-06-19 | Nippon Piston Ring Co Ltd | Rotary compressor |
-
1988
- 1988-07-15 JP JP17495288A patent/JPS6435094A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59105990A (en) * | 1982-12-11 | 1984-06-19 | Nippon Piston Ring Co Ltd | Rotary compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6435094A (en) | 1989-02-06 |
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