JPH0635876B2 - Scroll compressor - Google Patents
Scroll compressorInfo
- Publication number
- JPH0635876B2 JPH0635876B2 JP17836188A JP17836188A JPH0635876B2 JP H0635876 B2 JPH0635876 B2 JP H0635876B2 JP 17836188 A JP17836188 A JP 17836188A JP 17836188 A JP17836188 A JP 17836188A JP H0635876 B2 JPH0635876 B2 JP H0635876B2
- Authority
- JP
- Japan
- Prior art keywords
- scroll
- outer peripheral
- fixed
- fixed scroll
- housing
- 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
- 230000002093 peripheral effect Effects 0.000 claims description 20
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000013585 weight reducing agent 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
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
- F04C18/0269—Details concerning the involute wraps
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】 本発明はスクロール型圧縮機に関するものである。The present invention relates to a scroll compressor.
［従来の技術］ スクロール型圧縮機全体の大径化を回避するため、固定
ハウジングの渦巻部の終端側をハウジングの一部とする
スクロール型圧縮機がある。固定スクロールの渦巻部の
終端側をハウジングの一部とする構成はハウジングの内
側に固定スクロールの渦巻部の終端側を配設する構成に
比して圧縮機全体の縮径化を可能とし、圧縮機全体の軽
量化にも繋がる。[Prior Art] In order to avoid an increase in the diameter of the entire scroll compressor, there is a scroll compressor in which the end side of the spiral portion of the fixed housing is part of the housing. The structure in which the end side of the spiral portion of the fixed scroll is part of the housing enables the diameter of the entire compressor to be reduced as compared with the structure in which the end side of the spiral portion of the fixed scroll is arranged inside the housing. It also leads to weight reduction of the entire machine.
［発明が解決しようとする課題］ 渦巻部の壁面間の溝の切削は予め鋳込み形成された粗溝
の側面をエンドミルで精密切削することにより行われる
が、固定スクロールの渦巻部の終端部からなるハウジン
グは円形状であり、前記粗溝は終端付近で狭くなる。そ
のため、渦巻部の内外壁面を同時に切削可能な大径のエ
ンドミルを用いた場合には固定スクロールの渦巻部と一
体のハウジング部位の肉薄化が避けられず、小径のエン
ドミルを用いればエンドミル自体の変形が起き、渦巻部
の壁面加工の精度が低下する。大径のエンドミルで最後
まで切削加工しようとすれば固定スクロールと一体のハ
ウジングを大径化せざるを得ず、圧縮機全体の大径化回
避ができない。勿論、終端部の手前まで大径のエンドミ
ルを用い、次いで小径のエンドミルに取り替えて行なう
こともできるが、この取替は両倒であるばかりでなく、
スクロール底面の平面度を得ることも困難となる。[Problems to be Solved by the Invention] Cutting of the groove between the wall surfaces of the spiral portion is performed by precisely cutting the side surface of the rough groove formed in advance with an end mill, but it is composed of the end portion of the spiral portion of the fixed scroll. The housing has a circular shape, and the rough groove narrows near the end. Therefore, when using a large-diameter end mill that can simultaneously cut the inner and outer wall surfaces of the spiral part, it is unavoidable to thin the housing part that is integral with the spiral part of the fixed scroll. Occurs, and the accuracy of the wall surface processing of the spiral part decreases. If a large-diameter end mill is used to perform cutting to the end, the housing integral with the fixed scroll must be increased in diameter, and it is impossible to avoid increasing the overall diameter of the compressor. Of course, it is possible to use a large-diameter end mill up to the front of the end part and then replace it with a small-diameter end mill, but this replacement is not only a two-sided,
It is also difficult to obtain the flatness of the bottom of the scroll.
本発明は圧縮機全体の大径化をもたらすことなく大径の
エンドミルを用いて精度の高い切削加工を可能とする固
定スクロール−ハウジング一体化のスクロール型圧縮機
を提供することを目的とするものである。SUMMARY OF THE INVENTION It is an object of the present invention to provide a fixed scroll-housing integrated scroll type compressor capable of highly accurate cutting using a large diameter end mill without increasing the overall diameter of the compressor. Is.
［課題を解決するための手段］ そのために本発明では固定スクロールの渦巻部の終端側
をハウジングの外周壁とした固定スクロール−ハウジン
グ一体化のスクロール型圧縮機を対象とし、可動スクロ
ールの渦巻部と摺動接触する固定スクロールの渦巻部の
終端外周壁を他部位の外周壁よよりも外方へはみ出し形
成し、このはみ出し部位の内壁面をインボリュート曲線
とした。[Means for Solving the Problems] Therefore, in the present invention, a scroll type compressor integrated with a fixed scroll in which the terminal end side of the spiral portion of the fixed scroll is the outer peripheral wall of the housing is used. The terminal outer peripheral wall of the spiral portion of the fixed scroll which is in sliding contact is formed so as to protrude outward from the outer peripheral walls of other parts, and the inner wall surface of this protruding part is an involute curve.
［作用］ 固定スクロールと一体に形成されたハウジングの外周壁
に前記はみ出し部位を設けたことにより、肉薄化をもた
らすことなくこのはみ出し部位の内壁面を大径のエンド
ミルによりインボリュート曲線に切削加工することがで
きる。従って、固定スクロールの渦巻部の始端側から終
端側にかけて単一の大径のエンドミルを連続使用するこ
とができ、切削加工の精度を高めることができる。[Operation] Since the protruding portion is provided on the outer peripheral wall of the housing integrally formed with the fixed scroll, the inner wall surface of the protruding portion can be cut into an involute curve by a large-diameter end mill without causing thinning. You can Therefore, a single large-diameter end mill can be continuously used from the starting end side to the terminating end side of the spiral portion of the fixed scroll, and the cutting accuracy can be improved.
［実施例］ 以下、本発明を具体化した一実施例を図面に基づいて説
明する。[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.
第２図に示すように１はリヤハウジングを兼ねる固定ス
クロールであり、固定スクロール１とフロントハウジン
グ２とが接合固定されていると共に、固定スクロール１
の外周壁５の先端部内面には環状の固定基板６がフロン
トハウジング２先端面に接するように嵌入固定されてい
る。フロントハウジング２内には回転軸３が回転可能に
収容されており、回転軸３の大径部３ａの内端面上の偏
心位置には偏心軸４が固定基板６中央部の通路を通って
固定スクロール１の外周壁５の包囲領域内に突設されて
いる。As shown in FIG. 2, reference numeral 1 denotes a fixed scroll that also serves as a rear housing. The fixed scroll 1 and the front housing 2 are joined and fixed together, and the fixed scroll 1
An annular fixed substrate 6 is fitted and fixed on the inner surface of the outer peripheral wall 5 at the front end so as to be in contact with the front end surface of the front housing 2. A rotary shaft 3 is rotatably accommodated in the front housing 2, and the eccentric shaft 4 is fixed at an eccentric position on the inner end face of the large diameter portion 3a of the rotary shaft 3 through a passage in the central portion of the fixed substrate 6. The scroll 1 is provided so as to project in the surrounding region of the outer peripheral wall 5.
偏心軸４には円弧板からなるバランスウェイト７及びブ
ッシュ８が回動可能に支持されていると共に、ブッシュ
８には可動スクロール１０が固定スクロール１と対向接
合して回転可能に支持されており、両スクロール１，１
０の基端壁1a，10a及び渦巻部１ｂ，１０ｂにより圧縮
室が形成されている。The eccentric shaft 4 rotatably supports a balance weight 7 and a bush 8 formed of an arc plate, and a movable scroll 10 is rotatably supported on the bush 8 by being joined to the fixed scroll 1 so as to face each other. Both scrolls 1, 1
A compression chamber is formed by the 0 base end walls 1a and 10a and the spiral portions 1b and 10b.
可動スクロール１０と対向する固定基板６の面上には固
定リング１１が止着されており、固定リング１１には円
形状の複数の公転位置規制孔11aが等間隔位置に透設さ
れている。可動スクロール１０の基端壁１０ａ背面には
可動リング１２が止着されていると共に、可動リング１
２には円形状の公転位置規制孔１２ａが公転位置規制孔
１１ａと対応して等間隔位置に透設されている。各公転
位置規制孔１１ａ，１２ａにはこれより小径の円板状シ
ュー９Ａ，９Ｂが挿入されており、対向するシュー９
Ａ，９Ｂ間にはボール１３が介在されている。即ち、公
転位置規制孔１１ａ，１２ａ及びボール１３により自転
阻止機能を備えた公転機構が構成されており、回転軸３
の回転に対して可動スクロール１０が自転することなく
公転する。A fixed ring 11 is fixed to the surface of the fixed base plate 6 facing the movable scroll 10, and a plurality of circular revolution position restriction holes 11a are formed in the fixed ring 11 at equal intervals. The movable ring 12 is fixed to the rear surface of the base end wall 10a of the movable scroll 10, and the movable ring 1
In FIG. 2, circular revolving position regulating holes 12a are provided at equal intervals corresponding to the revolving position regulating holes 11a. Disc-shaped shoes 9A, 9B having a smaller diameter than that are inserted in the respective revolution position regulating holes 11a, 12a, and the opposing shoes 9 are formed.
A ball 13 is interposed between A and 9B. That is, the revolution position regulating holes 11a and 12a and the ball 13 constitute a revolution mechanism having a rotation preventing function.
The movable scroll 10 revolves around its rotation without rotating.
自転を阻止されつつ公転する可動スクロール１０の公転
位置を規制する固定基板６の近傍における外周壁５には
冷媒ガス導入用の入口５ａが設けられており、両スクロ
ール１，１０間の圧縮室へ導入される。そして、両スク
ロール１，１０間にて圧縮された冷媒ガスは吐出弁１４
により開放可能に閉塞されている吐出ポート１ｃから固
定スクロール１の基端壁１ａの背面側の吐出室１５内へ
吐出される。An inlet 5a for introducing a refrigerant gas is provided in the outer peripheral wall 5 in the vicinity of the fixed substrate 6 that regulates the revolving position of the movable scroll 10 that revolves while being prevented from rotating. be introduced. The refrigerant gas compressed between the scrolls 1 and 10 is discharged from the discharge valve 14
Is discharged into the discharge chamber 15 on the back side of the base end wall 1a of the fixed scroll 1 from the discharge port 1c which is openably closed.
第１図に示すように固定スクロール１の外周壁５の周面
は半径線ｒ１から半径線ｒ２にわたる角度領域θ１では
半径ｒの円弧に形成してあり、半径線ｒ２から半径線ｒ
１にわたる角度領域θ２（＜θ１）では円Ｃ０を基礎と
するインボリュート曲線に形成されている。従って、外
周壁５の周面は角度領域θ２では半径ｒの円から外方へ
はみ出す。そして、渦巻部１ｂの外壁面１ｄは始端部か
ら半径線ｒ１付近の終端部にかけて円Ｃ０を基礎とする
インボリュート曲線に形成されており、内壁面１ｅも始
端部から半径線ｒ１付近の終端部にかけて円Ｃ０を基礎
とするインボリュート曲線に形成されている。As shown in FIG. 1, the peripheral surface of the outer peripheral wall 5 of the fixed scroll 1 is formed into an arc of radius r in the angular region θ 1 extending from the radius line r 1 to the radius line r 2 , and from the radius line r 2 to the radius line r 2. r
In the angular region θ 2 (<θ 1 ) over 1 , an involute curve based on the circle C 0 is formed. Therefore, the peripheral surface of the outer peripheral wall 5 protrudes outward from the circle having the radius r in the angular region θ 2 . The outer wall surface 1d of the spiral portion 1b is formed in an involute curve based on the circle C 0 from the start end portion to the end portion near the radius line r 1 , and the inner wall surface 1e also extends from the start end portion to the radius line r 1 near the radius line r 1 . It is formed in an involute curve based on the circle C 0 toward the terminal end.
半径線ｒ１は可動スクロール１０の渦巻部10bの終端の
公転領域よりも若干伸開角増大方向へずれた位置に設定
されており、内壁面１ｅは始端部から半径線ｒ１付近ま
での領域で可動スクロール１０の渦巻部１０ｂと摺動接
触する。半径線ｒ２は半径ｒの外周円とインボリュート
曲線の内壁面１ｅとの間の壁厚が必要厚以上となってい
る境であり、外周壁５の外周面全てを半径ｒの円とした
場合には角度領域θ２では外周壁５の壁厚が必要厚以下
となる。しかしながら、本実施例では角度領域θ２にお
ける外周壁５の外周面の形状を半径ｒの円から外方へは
み出す略インボリュート曲線としたことにより、角度領
域θ２のはみ出し部位５ｂにおいても必要な壁厚を維持
しつつこの内壁面１ｅ′及びこの内壁面１ｅ′に対向す
る外壁面１ｄを大径のエンドミル１６にてインボリュー
ト曲線に精密加工することができる。しかも外周壁５の
円周から外方へはみ出すはみ出し部位５ｂが全体の一部
であることから固定スクロール１全体の大径化を抑制す
ることができ、圧縮機全体の大径化が回避される。The radius line r 1 is set at a position slightly displaced from the revolving region at the end of the spiral portion 10b of the orbiting scroll 10 in the direction of increasing the expansion angle, and the inner wall surface 1e is a region from the start end to the vicinity of the radius line r 1. The sliding contact is made with the spiral portion 10b of the orbiting scroll 10. The radius line r 2 is a boundary where the wall thickness between the outer circumference circle of the radius r and the inner wall surface 1e of the involute curve is equal to or greater than the required thickness, and when the entire outer circumference surface of the outer circumference wall 5 is a circle of the radius r In the angular region θ 2 , the wall thickness of the outer peripheral wall 5 is less than or equal to the required thickness. However, in this embodiment, since the shape of the outer peripheral surface of the outer peripheral wall 5 in the angle region θ 2 is a substantially involute curve protruding outward from the circle having the radius r, the wall required in the protruding portion 5b in the angle region θ 2 is also required. The inner wall surface 1e 'and the outer wall surface 1d facing the inner wall surface 1e' can be precisely machined into an involute curve by the large-diameter end mill 16 while maintaining the thickness. Moreover, since the protruding portion 5b protruding outward from the circumference of the outer peripheral wall 5 is a part of the whole, it is possible to suppress an increase in the diameter of the fixed scroll 1 as a whole, and avoid an increase in the diameter of the entire compressor. .
［発明の効果］ 以上詳述したように本発明は、可動スクロールの渦巻部
と摺動接触する固定スクロールの渦巻部の終端側の外周
壁を他部位の外周壁よりも外方へはみ出し形成し、この
はみ出し部位の内壁面をインボリュート曲線としたの
で、渦巻部の内外壁面を同時に切削加工する大径のエン
ドミルを終始一貫して使用可能となり、これにより圧縮
機全体の大径化を抑制しつつ渦巻部の内外壁面の精密加
工を行い得るという優れた効果を奏する。[Effect of the Invention] As described in detail above, according to the present invention, the outer peripheral wall on the terminal end side of the spiral portion of the fixed scroll, which is in sliding contact with the spiral portion of the movable scroll, is formed to protrude outward from the outer peripheral walls of other parts. Since the inner wall surface of this protruding portion is an involute curve, it is possible to consistently use a large-diameter end mill that simultaneously cuts the inner and outer wall surfaces of the spiral part, thereby suppressing the increase in overall diameter of the compressor. It has an excellent effect that the inner and outer wall surfaces of the spiral portion can be precisely processed.
第１図は第２図のＡ−Ａ線断面図、第２図は側断面図で
ある。 固定スクロール１、渦巻部１ｂ、外周壁５、はみ出し部
位５ｂ。1 is a sectional view taken along the line AA of FIG. 2, and FIG. 2 is a side sectional view. Fixed scroll 1, spiral portion 1b, outer peripheral wall 5, protruding portion 5b.
Claims (1)
成され、この固定スクロールに対向して自転不能かつ公
転可能にハウジング内に収容支持された可動スクロール
との間に可動スクロールの公転に基づいて容積減少する
密閉空間を形成するスクロール型圧縮機において、可動
スクロールの渦巻部と摺動接触する固定スクロールの渦
巻部の終端外周壁を他部位の外周壁よりも外方へはみ出
し形成し、このはみ出し部位の内壁面をインボリュート
曲線としたスクロール型圧縮機。Claim: What is claimed is: 1. A fixed scroll and a housing are formed integrally with each other, and a volume is formed between the fixed scroll and a movable scroll that is non-rotatably and revolvably accommodated in the housing. In a scroll compressor that forms a reduced hermetic space, the end outer peripheral wall of the spiral part of the fixed scroll that is in sliding contact with the spiral part of the movable scroll is formed to protrude outward from the outer peripheral walls of other parts. Scroll type compressor with the inner wall surface of the involute curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17836188A JPH0635876B2 (en) | 1988-07-18 | 1988-07-18 | Scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17836188A JPH0635876B2 (en) | 1988-07-18 | 1988-07-18 | Scroll compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0227182A JPH0227182A (en) | 1990-01-29 |
| JPH0635876B2 true JPH0635876B2 (en) | 1994-05-11 |
Family
ID=16047147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17836188A Expired - Lifetime JPH0635876B2 (en) | 1988-07-18 | 1988-07-18 | Scroll compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0635876B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3144611B2 (en) * | 1993-10-15 | 2001-03-12 | 株式会社豊田自動織機製作所 | Scroll compressor |
| US6478556B2 (en) * | 1999-12-24 | 2002-11-12 | Lg Electronics Inc. | Asymmetric scroll compressor |
-
1988
- 1988-07-18 JP JP17836188A patent/JPH0635876B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0227182A (en) | 1990-01-29 |
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