JPS62255501A - Scroll member for scroll-type fluid suction/discharge device - Google Patents
Scroll member for scroll-type fluid suction/discharge deviceInfo
- Publication number
- JPS62255501A JPS62255501A JP61098797A JP9879786A JPS62255501A JP S62255501 A JPS62255501 A JP S62255501A JP 61098797 A JP61098797 A JP 61098797A JP 9879786 A JP9879786 A JP 9879786A JP S62255501 A JPS62255501 A JP S62255501A
- Authority
- JP
- Japan
- Prior art keywords
- scroll
- scroll member
- spiral
- area
- end 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.)
- Granted
Links
- 239000012530 fluid Substances 0.000 title claims description 22
- 238000005520 cutting process Methods 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 4
- 238000003754 machining Methods 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C1/00—Rotary-piston machines or engines
- F01C1/02—Rotary-piston machines or engines 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
- F01C1/0207—Rotary-piston machines or engines 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
- F01C1/0246—Details concerning the involute wraps or their base, e.g. geometry
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明はスクロール型流体吸俳装置に用いられるスクロ
ール部材に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a scroll member used in a scroll type fluid absorption device.
［従来の技術］
一般にスクロール型流体吸俳装置は、互いに組み合わさ
れた二つのうず巻部品、即ち、スクロール部材を有して
いる。それらのスクロール部材はいずれも、−軸の回り
にうず巻状に形成されたうず巻要素と、このうず巻要素
の軸方向一端面に一体に設けた端板とを有している。二
つのスクロール部材の組み合わせ状態において、一方の
うず巻要素を他方のうず巻要素によろうず巻状間隔に配
置し、かつその他方のうず巻要素に接触させる。こうし
て両うず巻要素間に流体を閉じ込める密封空間を形成す
る。[Prior Art] Generally, a scroll-type fluid absorption device has two spiral parts, that is, scroll members, which are combined with each other. Each of these scroll members has a spiral element formed in a spiral shape around a -axis, and an end plate integrally provided on one end surface in the axial direction of the spiral element. In the assembled state of the two scroll members, one spiral element is spaced apart from and in contact with the other spiral element. In this way, a sealed space that confines the fluid is formed between both spiral elements.
一方のスクロール部材は固定される。（したがって以下
これを固定スクロール部材と呼ぶ。）他方のスクロール
部材は円軌道に沿って回動可能であるが、その回転は阻
止される。（従って以下これを可動スクロール部材と呼
ぶ。）運転に際し、可動スクロール部材をモータ等によ
って駆動すると、上述の密封空間がうず巻に沿って運ば
れる。One scroll member is fixed. (Thus, this is hereinafter referred to as a fixed scroll member.) The other scroll member is rotatable along a circular orbit, but its rotation is prevented. (Therefore, this is hereinafter referred to as a movable scroll member.) During operation, when the movable scroll member is driven by a motor or the like, the above-mentioned sealed space is conveyed along the spiral.
この結果、流体吸排作用を得ることができる。As a result, a fluid sucking and discharging action can be obtained.
両スクロール部材はいずれも、一般に、ケーシング内に
収容される。＝Ｊ動ススクロール部材駆動するためのモ
ータをもそのケーンング内に収容したものもある。固定
スクロール部材がケーシングを兼ねたものもあり、その
場合にはケーシングはもちろん不要となる。Both scroll members are generally housed within a casing. =J There is also a motor for driving the scroll member housed within the caning. In some cases, the fixed scroll member also serves as a casing, in which case the casing is of course unnecessary.
上述したようなスクロール型流体吸体装置は、例えば特
開昭６０−１９０６９０号公報や米国特許第４４９４９
１４号明細書等にて既によく知られている。The scroll-type fluid absorbing device as described above is disclosed in, for example, Japanese Patent Application Laid-open No. 190690/1983 and US Pat. No. 44949.
It is already well known from the specification of No. 14.
ところで運転時には、両うず巻要素は互いにスライドす
る。このスライドを円滑に行わせるため、従来、うず巻
要素の内壁面及び外壁面には仕上加工が施されている。However, during operation, both spiral elements slide relative to each other. In order to perform this sliding smoothly, the inner and outer wall surfaces of the spiral element have conventionally been finished.
この仕上加工は、うず巻要素の内壁面及び外壁面の全体
にわたって、切削加工により行われている。This finishing process is performed by cutting the entire inner and outer wall surfaces of the spiral element.
［発明が解決しようとする問題点］
しかしこの種のスクロール部材の製造において、切削に
よる仕上加工は望ましくない。なぜなら、切削加工は加
工時間が多くかかる上に、材料の無駄も多（なってしま
うからである。[Problems to be Solved by the Invention] However, in manufacturing this type of scroll member, finishing by cutting is not desirable. This is because cutting requires a lot of time and wastes a lot of material.
それ故に本発明の目的は、切削による仕上加工を施す部
分の面積を極力減少したスクロール型流体吸排装置用ス
クロール部材を提供することにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a scroll member for a scroll type fluid suction/discharge device in which the area of the portion to be finished by cutting is reduced as much as possible.
［問題を解決するための手段］
本発明によれば、−軸の回りにうず巻状に形成されたう
ず巻要素と、該うず巻要素の軸方向一端面に一体に設け
た端板とを有するスクロール部材において、上記うず巻
要素はそのうず巻外端から多くとも一周までの部分の外
壁面に素肌のままの部分を有していることを特徴とする
スクロール型流体吸排装置用スクロール部材が得られる
。[Means for Solving the Problem] According to the present invention, a spiral element formed in a spiral shape around a -axis and an end plate integrally provided on one end surface in the axial direction of the spiral element are provided. A scroll member for a scroll type fluid suction/drainage device, wherein the spiral element has a bare skin portion on the outer wall surface of the spiral element for at most one turn from the spiral outer end. can get.
［実施例コ 以下に本発明の詳細な説明する。[Example code] The present invention will be explained in detail below.
第１図は本発明に係るスクロール型流体吸排装置として
の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とこれにボルト等にて固定されたカップ状
部分１２とから成る圧縮機ハウジング１０を有している
。フロントエンドプレート１１は、中央部に中心孔をａ
し、該中心孔内にボールベリアリング１３を配設するこ
とによって中心孔に貫通する主軸１４を回転自在に支承
している。FIG. 1 is a longitudinal cross-sectional view of a compressor as a scroll type fluid suction/discharge device according to the present invention. The compressor has a compressor housing 10 consisting of a front end plate 11 and a cup-shaped portion 12 fixed to the front end plate 11 with bolts or the like. The front end plate 11 has a center hole a in the center.
However, by disposing a ball bearing ring 13 in the center hole, a main shaft 14 penetrating through the center hole is rotatably supported.
また圧縮機ハウジング１０内には、固定スクロール部材
１５と可動スクロール部材１６とが配設されている。こ
こで、固定スクロール部材１５は端板１５１とその一面
上に設けたうず巻要素１５２及び該うず巻要素１５２を
固着した面とは反対側の端板上に設けた脚部１５３とよ
り構成され、該脚部１５３をカップ状部分１２の外方よ
りカップ状部分貫通して螺合する複数のボルト１７によ
ってカップ状部分１２の底部１２１上に固定する。Furthermore, a fixed scroll member 15 and a movable scroll member 16 are disposed within the compressor housing 10. Here, the fixed scroll member 15 is composed of an end plate 151, a spiral element 152 provided on one surface thereof, and a leg portion 153 provided on the end plate on the opposite side to the surface to which the spiral element 152 is fixed. The leg portion 153 is fixed onto the bottom portion 121 of the cup-shaped portion 12 by a plurality of bolts 17 which pass through the cup-shaped portion from the outside of the cup-shaped portion 12 and are screwed together.
なお、カップ状部分１２内に固定された固定スクロール
部材１５の端板１５１は、その外周面とカップ状部分１
２の内壁間をシール部材２０でシールすることによって
カップ状部分１２の内部空間を吸入室１８と吐出室１９
とに仕切っている。Note that the end plate 151 of the fixed scroll member 15 fixed within the cup-shaped portion 12 is connected to the outer circumferential surface of the fixed scroll member 15.
By sealing between the inner walls of the cup-shaped portion 12 with the sealing member 20, the inner space of the cup-shaped portion 12 is separated into the suction chamber 18 and the discharge chamber 19.
It is divided into two parts.
端板１５１の中央には流体ポケット、即ち、密閉空間内
の圧縮された流体を吐出室１９へ吐出させる貫通孔１５
４を穿設している。At the center of the end plate 151 is a fluid pocket, that is, a through hole 15 through which the compressed fluid in the closed space is discharged into the discharge chamber 19.
4 is drilled.
可動スクロール部材１６は端板１６１とその一面上に設
けたうず巻要素１６２とより構成される。The movable scroll member 16 is composed of an end plate 161 and a spiral element 162 provided on one surface thereof.
うず巻要素１６２は、前述した固定スクロール部材１５
のうず巻要素１５２に対して１８０″の角度ずれをもっ
てかみ合わされている。また可動スクロール部材１６は
駆動機構及び回転阻止機構と連結され、主軸１４の回転
によって所定の円軌道上を公転運動し、流体の圧縮を行
う。なお、可動スクロール部材の駆動機構及び回転阻止
機構は種々の公知の機構にて実施され得るため、ここで
の詳細な説明は省略する。The spiral element 162 is connected to the fixed scroll member 15 described above.
The movable scroll member 16 is connected to the spiral element 152 with an angular deviation of 180''.The movable scroll member 16 is connected to a drive mechanism and a rotation prevention mechanism, and revolves around a predetermined circular orbit by the rotation of the main shaft 14. The fluid is compressed.The drive mechanism and rotation prevention mechanism for the movable scroll member can be implemented using various known mechanisms, so a detailed description thereof will be omitted here.
このような構成の圧縮機にあっては、主軸１４の回転に
伴って可動スクロール部材１６が所定の円軌道上を公転
運動すると、両うず巻要素間の線接触部がうず巻要素表
面に沿って中心方向へ移動する。この結果流体ポケ７）
が容積を減少しなからうず巻要素の中心方向へ移動する
。実際には外部流体回路からハウジング１０上の吸入ボ
ート２１を通って吸入室１８へ流入した流体は、両うす
巻要素の外路端部から取り込まれる。そして圧縮された
流体は両うず巻要素の中央部の流体ポケットから固定ス
クロール部材１５の端板１５１に穿設した貫通孔１５４
を通って吐出室１９へ吐出され、そこからハウジング１
０上の吐出ポート２２を通して外部流体回路へ流出する
こととなる。In a compressor with such a configuration, when the movable scroll member 16 revolves on a predetermined circular orbit as the main shaft 14 rotates, the line contact between both spiral elements moves along the surface of the spiral element. to move toward the center. This results in fluid pocket 7)
moves toward the center of the spiral element without decreasing its volume. In fact, fluid entering the suction chamber 18 from the external fluid circuit through the suction boat 21 on the housing 10 is taken in from the outer ends of both thinly wound elements. The compressed fluid flows from the fluid pocket at the center of both spiral elements to a through hole 154 formed in the end plate 151 of the fixed scroll member 15.
is discharged through the discharge chamber 19 from there to the housing 1
0 to the external fluid circuit through the discharge port 22 on the 0.
第２図は両うず巻要素１５２．１８２の相対的な関係を
示す。第２図から推察できるように、一方のうず巻要素
（例えば１５２）のうず圏外端からうず巻中心に向けて
約半周過ぎま゛での部分の外壁面は、他方のうず巻要素
１６２にスライドすることはない。この点は、他方のう
ず巻要素１６２に関しても同じことである。FIG. 2 shows the relative relationship of both spiral elements 152, 182. As can be inferred from FIG. 2, the outer wall surface of one spiral element (for example, 152) at a portion approximately half a turn from the outer end of the spiral toward the center of the spiral slides onto the other spiral element 162. There's nothing to do. This point also applies to the other spiral element 162.
第３図は本発明の一実施例による固定スクロール部材１
５を示す。この固定スクロール部材１５は鋳造された素
形材に、切削にて仕上加工を施したものである。うず巻
要素１５２は一軸の回りにうず巻状に形成されている。FIG. 3 shows a fixed scroll member 1 according to an embodiment of the present invention.
5 is shown. The fixed scroll member 15 is made of a cast material and finished by cutting. The spiral element 152 is formed in a spiral shape around one axis.
−万端板１５１はハウジング１０の内面に密着嵌合する
径の円板杖であり、うず巻要素１５２の軸方向一端面に
一体に設けられている。- The end plate 151 is a disc rod having a diameter that tightly fits into the inner surface of the housing 10, and is integrally provided on one end surface of the spiral element 152 in the axial direction.
さらにうず巻要素１５２の外壁面はそのうず圏外端Ａか
らうず巻中心に向かって約半周すぎの地点Ｂまでの部分
を素肌（鋳肌）のまま残されている。一方、端板１５１
の表面（即ち、うず巻要素１５２を設けた面）も、Ａ−
Ｂ−Ｃ−Ｄで囲まれる部分を素肌のまま残されている。Further, the outer wall surface of the spiral element 152 is left bare (cast surface) in a portion from the outer end A of the spiral to a point B approximately half way around the center of the spiral. On the other hand, the end plate 151
(i.e., the surface provided with the spiral element 152) is also A-
The area surrounded by B-C-D is left bare skin.
固定スクロール部材１５の残りの部分は切削による仕上
加工が施されている。The remaining portion of the fixed scroll member 15 is finished by cutting.
上述の固定スクロール部材１５によると、切削加工を施
す部分の面積が減少するため、加工時間の短縮が可能で
ある。可動スクロール部材１６についても同様に実施で
きかつ同等な効果が得られる。According to the above-described fixed scroll member 15, the area of the portion to be cut is reduced, so that the machining time can be shortened. The same method can be applied to the movable scroll member 16, and the same effect can be obtained.
また、上述のＡ−８間部分における壁厚は他の部分の壁
厚よりも薄くしておくことができる。これは、圧縮動作
においてうず巻要素に取り込まれた流体の圧縮がクラン
ク半回転まではゆるやかなため、うず巻中央部と同じ厚
さで得られるような強度は不要なことによる。Further, the wall thickness in the above-mentioned A-8 portion can be made thinner than the wall thickness in other portions. This is because the fluid taken into the spiral element during the compression operation is only slowly compressed up to half a revolution of the crank, so the strength that can be obtained with the same thickness as the center of the spiral is not necessary.
また、上述ではＡ−８間部分を全て素肌のまま残してい
るが、一部のみが素肌のままであってもよい。要するに
第２図においてうず巻要素１５２．１６２の互いにスラ
イドすることのない部分のみ素肌のまま残すことが可能
なのである。Further, in the above description, the entire area between A and 8 is left bare skin, but only a part of it may be left bare skin. In short, in FIG. 2, it is possible to leave only the portions of the spiral elements 152, 162 that do not slide relative to each other bare skin.
また上述では、スクロール部材が鋳造にて作られる場合
につき説明したが、鍛造又は切削にて作られる場合であ
っても同様である。Moreover, although the above description has been made regarding the case where the scroll member is made by casting, the same applies even if the scroll member is made by forging or cutting.
なお、本発明は第１図に示した圧縮機のスクロール部材
のみならず、上述した特開昭６０−１９０６９０号公報
や米国特許第４４９４９１４号明細書等に開示されたよ
うな流体吸排装置のスクロール部材においても同様に実
施できることはいうまでもない。Note that the present invention is applicable not only to the scroll member of the compressor shown in FIG. It goes without saying that the same method can be applied to members as well.
［発明の効果］
以上説明したように本発明によれば、切削による仕上加
工を施す部分の面積が減少するので、加工時間の削減が
できるとともに材料の無駄の少ないスクロール型流体吸
排装置用スクロール部材が得られる。[Effects of the Invention] As explained above, according to the present invention, the area of the part to be finished by cutting is reduced, so that machining time can be reduced and a scroll member for a scroll-type fluid suction/drainage device with less waste of material can be obtained. is obtained.
以下余日Remaining days below
第１図は本発明に係るスクロール型流体吸排装置の縦断
面図、第２図はうず巻要素の相対的な関係を示す説明図
、第３図は本発明の一実施例の正面図である。
１０・・・圧縮機ハウジング、１５・・・固定スクロー
ル部材、１５１・・・端板、１５２・・・うず巻要素、
１６・・・可動スクロール部材、１６１・・・端板、１
６２・・・うず巻要素。
手続補正書（方式）
昭和ど／年Ｚ月夕日FIG. 1 is a longitudinal cross-sectional view of a scroll-type fluid intake and discharge device according to the present invention, FIG. 2 is an explanatory diagram showing the relative relationship of spiral elements, and FIG. 3 is a front view of an embodiment of the present invention. . DESCRIPTION OF SYMBOLS 10... Compressor housing, 15... Fixed scroll member, 151... End plate, 152... Spiral element,
16... Movable scroll member, 161... End plate, 1
62... Spiral element. Procedural amendment (method) Sunset in Z month, Showa era
Claims (1)
該うず巻要素の軸方向一端面に一体に設けた端板とを有
するスクロール部材において、上記うず巻要素はそのう
ず巻外端から多くとも一周までの部分の外壁面に素肌の
ままの部分を有していることを特徴とするスクロール型
流体吸排装置用スクロール部材。1) A spiral element formed in a spiral shape around a single axis,
In the scroll member having an end plate integrally provided on one end surface in the axial direction of the spiral element, the spiral element has a bare skin portion on the outer wall surface of the portion extending at most one turn from the spiral outer end. A scroll member for a scroll type fluid suction/drainage device, characterized in that the scroll member comprises:
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61098797A JPS62255501A (en) | 1986-04-28 | 1986-04-28 | Scroll member for scroll-type fluid suction/discharge device |
| EP87303700A EP0244183B1 (en) | 1986-04-28 | 1987-04-27 | Scroll member for scroll type fluid displacement apparatus |
| DE3788434T DE3788434T2 (en) | 1986-04-28 | 1987-04-27 | Spiral part for spiral displacement machine for fluids. |
| EP90203257A EP0429146B1 (en) | 1986-04-28 | 1987-04-27 | Scroll member for scroll type fluid displacement apparatus |
| AU72101/87A AU593098B2 (en) | 1986-04-28 | 1987-04-27 | Scroll member for scroll type fluid displacement apparatus |
| DE8787303700T DE3772615D1 (en) | 1986-04-28 | 1987-04-27 | SPIRAL ELEMENT FOR FLUIDUM DISPLACEMENT MACHINE WITH INTERLOCKING SPIRAL ELEMENTS. |
| US07/043,460 US4824345A (en) | 1986-04-28 | 1987-04-28 | Scroll member for scroll type fluid displacement apparatus |
| KR1019870004094A KR950011371B1 (en) | 1986-04-28 | 1987-04-28 | Scroll type compressor |
| CA000535801A CA1303418C (en) | 1986-04-28 | 1987-04-28 | Scroll member for scroll type fluid displacement apparatus |
| AU46133/89A AU615361B2 (en) | 1986-04-28 | 1989-12-12 | Scroll member for scroll type fluid displacement apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61098797A JPS62255501A (en) | 1986-04-28 | 1986-04-28 | Scroll member for scroll-type fluid suction/discharge device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62255501A true JPS62255501A (en) | 1987-11-07 |
| JPH0452842B2 JPH0452842B2 (en) | 1992-08-25 |
Family
ID=14229345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61098797A Granted JPS62255501A (en) | 1986-04-28 | 1986-04-28 | Scroll member for scroll-type fluid suction/discharge device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62255501A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0753667A2 (en) * | 1995-07-10 | 1997-01-15 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Method of manufacturing a movable scroll element and a scroll element produced by the same method |
| EP1225338A2 (en) | 2001-01-19 | 2002-07-24 | Kabushiki Kaisha Toyota Jidoshokki | Scroll-type compressor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3771666B2 (en) | 1997-04-10 | 2006-04-26 | サンデン株式会社 | Scroll member for scroll type fluid machinery |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5937289A (en) * | 1982-08-27 | 1984-02-29 | Hitachi Ltd | Scroll compressor |
| JPS6079189A (en) * | 1983-10-05 | 1985-05-04 | Hitachi Ltd | Scroll fluid machine |
-
1986
- 1986-04-28 JP JP61098797A patent/JPS62255501A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5937289A (en) * | 1982-08-27 | 1984-02-29 | Hitachi Ltd | Scroll compressor |
| JPS6079189A (en) * | 1983-10-05 | 1985-05-04 | Hitachi Ltd | Scroll fluid machine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0753667A2 (en) * | 1995-07-10 | 1997-01-15 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Method of manufacturing a movable scroll element and a scroll element produced by the same method |
| EP0753667A3 (en) * | 1995-07-10 | 1998-01-07 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Method of manufacturing a movable scroll element and a scroll element produced by the same method |
| US5920985A (en) * | 1995-07-10 | 1999-07-13 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Method of manufacturing a movable scroll element |
| EP1225338A2 (en) | 2001-01-19 | 2002-07-24 | Kabushiki Kaisha Toyota Jidoshokki | Scroll-type compressor |
| EP1225338A3 (en) * | 2001-01-19 | 2003-07-30 | Kabushiki Kaisha Toyota Jidoshokki | Scroll-type compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0452842B2 (en) | 1992-08-25 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |