JPH0466792A - Scroll fluid machine - Google Patents

Scroll fluid machine

Info

Publication number
JPH0466792A
JPH0466792A JP18021690A JP18021690A JPH0466792A JP H0466792 A JPH0466792 A JP H0466792A JP 18021690 A JP18021690 A JP 18021690A JP 18021690 A JP18021690 A JP 18021690A JP H0466792 A JPH0466792 A JP H0466792A
Authority
JP
Japan
Prior art keywords
scroll
spiral
wall surface
driven
fluid machine
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.)
Pending
Application number
JP18021690A
Other languages
Japanese (ja)
Inventor
Shin Sekiya
慎 関屋
Yoshihisa Kitora
木藤良 善久
Masayuki Tsunoda
昌之 角田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP18021690A priority Critical patent/JPH0466792A/en
Publication of JPH0466792A publication Critical patent/JPH0466792A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02Rotary-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
    • F04C18/0207Rotary-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
    • F04C18/023Rotary-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 where both members are moving

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

PURPOSE:To reduce a pressing force and a frictional force both of which act on each spiral projecting body portion so as to prevent baking and abrasion and also reduce vibration and noise by forming a thin film portion on such a part as an inside wall surface within the limit of about one turn from the outer end of the spiral projecting body of either of scrolls. CONSTITUTION: A scroll fluid machine is provided with a driving scroll 1 which is put in a rotary motion by a drive source and the driven scroll 1 has a spiral projecting body 1a. The scroll fluid machine is also provided with a driven scroll which is put in a rotary motion in synchronization with rotation of the driving scroll 1 and the driven scroll has a spiral projecting body 2a and a discharge opening 2c which is formed at the center of the projecting body 2a and from which high pressure gases are discharged. A thin film portion 17 is formed on the inside wall surface 1d of the spiral projecting body 1a of the driving scroll 1. The thin film portion 7 is provided on the inside wall surface 1d within the limit of one turn from the outer end of the spiral projecting body 1a and is formed by a thin coat which is formed when uniformly and closely attached to the inside wall surface 1d with thickness delta by coating method etc.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明はスクロール流体機械に関し、更に詳細には駆動
スクロールと従動スクロールとを回転さ廿る全系回転型
のスクロール流体機械に関する。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a scroll fluid machine, and more particularly to a full-system rotating scroll fluid machine that rotates a driving scroll and a driven scroll.

(従来の技術) スクロール流体機械が一対の渦巻突起体を組合せて圧縮
作用を行なう容積形流体機械の一種であることは既によ
く知られている。一般に、スクロール流体機械は、渦巻
突起体の一方を固定し、他方を揺動運動させて圧縮作用
を行なうが、双方の渦巻突起体を異なる軸心を中心に回
転させる所謂全系回転型のスクロール流体機械も米国特
許第3884599号明細書などによって公知である。
(Prior Art) It is already well known that a scroll fluid machine is a type of displacement fluid machine that performs compression by combining a pair of spiral protrusions. Generally, scroll fluid machines perform compression by fixing one of the spiral protrusions and oscillating the other. Fluid machines are also known, such as from US Pat. No. 3,884,599.

また、全系回転型のスクロール流体機械の中でも駆動ス
クロールの渦巻突起体を直接従動スクロールの渦巻突起
体に接触させることによって従動スクロールに回転力を
伝達する駆動方式のものも米国特許第3600114号
明細書に記載され公知である。
In addition, among all-rotation type scroll fluid machines, there is also a drive system that transmits rotational force to the driven scroll by bringing the spiral protrusions of the driving scroll into direct contact with the spiral protrusions of the driven scroll, as disclosed in US Pat. No. 3,600,114. It is described in the book and is publicly known.

このような全系回転型で従動スクロールを駆動スクロー
ルとの接触により回転させる従来のスクロール流体機械
は第4図ないし第7図に示されているように構成されて
いた。すなわち、この種のスクロール流体機械は電動機
、機関またはタービンなどの駆動tA(図示せず)によ
り、その軸中心01を中心として回転運動する駆動スク
ロール1を備え、この駆動スクロール1は渦巻突起体1
aを有している。他方、軸中心0□を中心として駆動ス
クロール1の回転に同期して回転運動される従動スクロ
ール2は渦巻突起体2aと、この中心に形成され且つ高
圧気体が吐出される吐出口2Cとを有している。双方の
スクロール1.2により形成される圧縮室3は両スクロ
ールの回転により中心側へ容積を滅しながら圧縮気体の
圧力を上昇させる。その際、両スクロール1.2におけ
る渦巻突起体1a、2aの接触部すなわちシール部Sは
、半径方向に一直線上に並んで静止状態で一定位置を占
めている。なお、第4図において、符号4は、駆動スク
ロール1を支承する第1の枠体、5は従動スクロール2
を支承する軸、6はこの軸を支承する第2の枠体をそれ
ぞれ示している。
A conventional scroll fluid machine of the entire system rotation type in which a driven scroll is rotated by contact with a driving scroll is constructed as shown in FIGS. 4 to 7. That is, this type of scroll fluid machine includes a drive scroll 1 that rotates around its axial center 01 by a drive tA (not shown) such as an electric motor, an engine, or a turbine.
It has a. On the other hand, the driven scroll 2, which is rotated around the shaft center 0□ in synchronization with the rotation of the driving scroll 1, has a spiral protrusion 2a and a discharge port 2C formed at the center thereof and from which high-pressure gas is discharged. are doing. The compression chamber 3 formed by both scrolls 1.2 increases the pressure of the compressed gas while decreasing its volume toward the center due to the rotation of both scrolls. At this time, the contact portions of the spiral protrusions 1a and 2a of both scrolls 1.2, that is, the seal portions S are lined up in a straight line in the radial direction and occupy a fixed position in a stationary state. In addition, in FIG. 4, reference numeral 4 denotes a first frame supporting the driving scroll 1, and 5 denotes a driven scroll 2.
, and 6 indicates a second frame that supports this shaft.

このように構成された従来のスクロール流体機械におい
て、駆動スクロール1は駆動源によりその軸中心0.を
中心として回転運動され、従動スクロール2もその軸中
心02を中心として駆動スクロール1の回転に同期して
回転運動する。従って、双方のスクロールの回転により
圧縮室3が中心側に移動することによってその容積が城
しられ、圧縮気体の圧力が上昇し、その気体は吐出口2
Cから吐出される。
In the conventional scroll fluid machine configured as described above, the drive scroll 1 is moved to its axial center 0.0 by a drive source. The driven scroll 2 also rotates about its shaft center 02 in synchronization with the rotation of the driving scroll 1. Therefore, as the compression chamber 3 moves toward the center due to the rotation of both scrolls, its volume is restricted, the pressure of the compressed gas increases, and the gas is transferred to the discharge port 2.
It is discharged from C.

第5図tal〜第5図(d+は両スクロールの回転によ
る圧縮動作を示す図であり、第5図talは圧縮室3に
気体が吸入された、回転位置O°の状態であり、第5図
(1))〜第5図(d+はそれぞれ回転位置90゜18
0°、270°の状態を示している。これらの図から明
らかなように両スクロール1,2の回転により、圧縮室
3は次第に中心側に移動し容積が減少する。この間、双
方のスクロール1,2の渦巻突起体1a、2aによる半
径方向のシール部Sは半径方向に一直線上に並んで静止
状態で一定位置を占めていることがわかる。
Fig. 5 tal - Fig. 5 (d+ is a diagram showing the compression operation due to the rotation of both scrolls, Fig. 5 tal is a state in which gas is sucked into the compression chamber 3 at the rotational position 0°, Figure (1)) to Figure 5 (d+ is the rotational position of 90°18
The states of 0° and 270° are shown. As is clear from these figures, as the scrolls 1 and 2 rotate, the compression chamber 3 gradually moves toward the center and its volume decreases. During this time, it can be seen that the radial seal portions S formed by the spiral protrusions 1a and 2a of both scrolls 1 and 2 are lined up in a straight line in the radial direction and occupy a fixed position in a stationary state.

次に、駆動スクロール1の回転力が従動スクロル2に伝
達する過程を説明する。第6図6=おいて、駆動スクロ
ール1が矢印11の方向に、駆動源によって回転しよう
とすると、駆動スクロール渦巻突起体1aは従動スクロ
ール渦巻突起体2aを押し付け、接触点Sにおいて従動
スクロール渦巻突起体2aに押付は力F。を与える。そ
うすると、従動スクロール2には、押付は力F。の他に
押付は力に直角で回転方向の摩擦力F、が作用する。こ
の摩擦力Ffによって従動スクロール2が回転させられ
る。なお、上記過程において、駆動スクロール渦巻突起
体1aには、接触点Sにおいて当然従動スクロール渦巻
突起体2aに作用する押付は力F。および摩擦力Ffと
反対方向の反力が発生する。
Next, a process in which the rotational force of the driving scroll 1 is transmitted to the driven scroll 2 will be explained. In FIG. 6, when the driving scroll 1 attempts to rotate in the direction of the arrow 11 by the driving source, the driving scroll spiral protrusion 1a presses the driven scroll spiral protrusion 2a, and at the contact point S, the driven scroll spiral protrusion Force F is pressed against body 2a. give. Then, the driven scroll 2 is pressed with a force F. In addition, during pressing, a frictional force F, which is perpendicular to the force and in the direction of rotation, acts. The driven scroll 2 is rotated by this frictional force Ff. In the above process, force F is naturally applied to the driven scroll spiral projection 2a at the contact point S on the driving scroll spiral projection 1a. A reaction force in the opposite direction to the frictional force Ff is generated.

(発明が解決しようとする課題) 従来のスクロール流体機械は上述のように構成されてい
るので、双方のスクロールは原理的には複数の接触点で
接触しながら回転することになるが、実際には加工誤差
や組立誤差によりいづれか1箇所で接触することになる
。そうすると、従動スクロールを駆動するのに必要な回
転力を与えるのに、第7図(alに示されるように内方
側で接触する場合には摩擦力Ft は大きくなり、一方
第7図(blに示されるように外方側で接触する場合に
は摩擦力Ffは小さくなる。なお、押付は力F。は当然
第7図(a)の場合の方が第7図(blの場合よりも大
きくなる。
(Problem to be Solved by the Invention) Since the conventional scroll fluid machine is configured as described above, in principle both scrolls rotate while contacting each other at multiple contact points, but in reality, will come into contact at one point due to processing errors or assembly errors. Then, in order to provide the rotational force necessary to drive the driven scroll, the frictional force Ft becomes large when contact is made on the inside as shown in Fig. 7 (al); As shown in Figure 7(a), the frictional force Ff becomes smaller when the contact is made on the outside.The force F for pressing is naturally greater in the case of Figure 7(a) than in the case of Figure 7(bl). growing.

そうすると、両スクロール渦巻突起体は回転中に内方側
から外方側に至る間の任意の位置で接触する可能性があ
るため、回転中に押付は力F。や摩擦力F、が変動する
こととなり、振動や騒音が増大発生するという問題があ
る。また、特に内方側で接触した場合には、押付は力F
。や摩擦力F。
In this case, since both scroll spiral protrusions may come into contact at any position from the inner side to the outer side during rotation, the pressing force F is applied during rotation. , and the frictional force F will fluctuate, resulting in a problem of increased vibration and noise. In addition, especially when contact is made on the inside side, the pressing force is F
. and frictional force F.

が大きくなって、振動や騒音の増大だけでなく渦巻突起
体部分の摩耗・焼き付きなどの恐れが生しることになる
As a result, not only vibration and noise increase, but also there is a risk of wear and seizure of the spiral protrusion.

本発明の目的は、かかる従来の問題点を解消するために
なされたもので、双方の渦巻突起体部分に作用する押付
は力および摩擦力を小さくしてスクロール渦巻部に焼付
きや摩耗の発生を防止し、振動や騒音も低減するスクロ
ール流体機械を提供することにある。
The purpose of the present invention has been made to solve such conventional problems, and the pressing force acting on both spiral protrusions reduces the force and frictional force, thereby causing seizure and wear on the scroll spiral portion. The object of the present invention is to provide a scroll fluid machine that prevents vibrations and reduces vibration and noise.

(課題を解決するための手段) 本発明は、互いに異なる軸心上で自転し、平板上に渦巻
状の突起体を設けた駆動スクロールおよび従動スクロー
ルを備え、従動スクロールは駆動スクロールの渦巻突起
体が従動スクロールの渦巻突起体に接触してトルクを伝
達することにより回転され、駆動スクロールおよび従動
スクロールの双方が協働して圧縮室を構成するスクロー
ル流体機械において、一方のスクロールの渦巻突起体の
外端から約1巻の範囲の内側壁面および回転牛歩なくと
もこの外端から約1巻の範囲の内側壁面に接触する他方
のスクロールの渦巻突起体の外側壁面のいずれか一方に
薄膜部を形成したことを特徴とする。
(Means for Solving the Problems) The present invention includes a driving scroll and a driven scroll that rotate on mutually different axes and have a spiral projection on a flat plate, and the driven scroll has a spiral projection of the driving scroll. In a scroll fluid machine in which the scroll is rotated by contacting the spiral projection of the driven scroll and transmitting torque, and both the driving scroll and the driven scroll cooperate to form a compression chamber, the spiral projection of one scroll A thin film portion is formed on either the inner wall surface within a range of about one turn from the outer end and the outer wall surface of the spiral protrusion of the other scroll that contacts the inner wall surface within a range of about one turn from this outer end. It is characterized by what it did.

(作 用) 本発明のスクロール流体機械によると、駆動スクロール
渦巻突起体の外端から約1巻の範囲の内側壁面若しくは
従動スクロール渦巻突起体の外端から少なくとも約0.
5〜約1.5巻の範囲の外側壁面のいずれか一方に薄膜
部を形成したことにより、双方のスクロール渦巻突起体
同士は回転中この薄膜部のみの範囲で接触し、そのため
、接触点において双方の渦巻突起体に作用する押付は力
や摩擦力は回転中宮に小さくかつ変動も小さくなる。
(Function) According to the scroll fluid machine of the present invention, the inner wall surface within a range of about one turn from the outer end of the driving scroll spiral protrusion or at least about 0.0 mm from the outer end of the driven scroll spiral protrusion.
By forming a thin film part on either side of the outer wall surface in the range of 5 to about 1.5 turns, both scroll spiral protrusions come into contact with each other only within this thin film part during rotation, and therefore, at the point of contact, The pressing force and frictional force acting on both spiral protrusions are small and the fluctuations are small in the rotation medium.

(実施例) 以下、本発明のスクロール流体機械を添付図面に示され
る実施例6二ついて更に詳細に説明する。
(Embodiments) Hereinafter, the scroll fluid machine of the present invention will be described in further detail using two embodiments shown in the accompanying drawings.

第1図には本発明の第1の実施例に係るスクロール流体
機械において組合された両スクロールの渦巻突起体が示
されている。これら両スクロールの内、従動スクロール
は第4図ないし第7図に示された従来のものと同様であ
るが、駆動スクロール20は従来のものと異にしている
。すなわち、本実施例のスクロール流体機械において、
駆動スクロール20の渦を突起体1aそのものは従来と
同しであるが、その渦巻突起体1aの内側壁面1dに薄
膜部7が形成されている。このmW部7は渦巻突起体1
aの外端から1巻の範囲の内側壁面1dに設けられ、こ
の薄膜部7はコーティング等の方法により一様緊密に内
側壁面1dに厚みδで付着させて形成した薄い皮膜であ
る。
FIG. 1 shows the spiral protrusions of both scrolls combined in a scroll fluid machine according to a first embodiment of the present invention. Of these two scrolls, the driven scroll is similar to the conventional scroll shown in FIGS. 4 to 7, but the driving scroll 20 is different from the conventional scroll. That is, in the scroll fluid machine of this embodiment,
The spiral protrusion 1a of the drive scroll 20 itself is the same as the conventional one, but a thin film portion 7 is formed on the inner wall surface 1d of the spiral protrusion 1a. This mW part 7 is the spiral protrusion 1
This thin film portion 7 is provided on the inner wall surface 1d in a range of one turn from the outer end of a, and is a thin film formed by uniformly and tightly adhering to the inner wall surface 1d with a thickness δ by a method such as coating.

このような第1の実施例におけるスクロール流体機械に
よると、従動スクロール2を適宜の方法心こよって駆動
スクロール20に、渦巻突起体同士が接触するように矢
印12で示す径方向に押し付ければ、駆動スクロール2
0と従動スクロール2とは駆動スクロール20の渦巻突
起体1aに設けられた薄膜部7でのみ従動スクロール渦
巻突起体2aの外側壁面2fと接触することになる。こ
のとき、接触点S3以外の薄膜部7を有しない接触予定
位置S4においては、薄膜部7の厚みδに相当する量の
すきまがでることになる。この状態で駆動スクロール2
0を回転駆動させると、第4図の作動原理から明らかな
ように、駆動スクロール20と従動スクロール2とは、
従動スクロール渦巻突起体2aの外側壁面2fと駆動ス
クロール渦巻突起体1aに形成した薄膜部7とでのみ接
触しながら双方のスクロールは回転することになる。
According to the scroll fluid machine of the first embodiment, if the driven scroll 2 is pressed against the driving scroll 20 in an appropriate manner in the radial direction shown by the arrow 12 so that the spiral protrusions are in contact with each other, Drive scroll 2
0 and the driven scroll 2 come into contact with the outer wall surface 2f of the driven scroll spiral projection 2a only at the thin film portion 7 provided on the spiral projection 1a of the driving scroll 20. At this time, a gap corresponding to the thickness δ of the thin film portion 7 will appear at the expected contact position S4, which does not have the thin film portion 7 other than the contact point S3. In this state, drive scroll 2
0 is rotated, as is clear from the operating principle shown in FIG. 4, the driving scroll 20 and the driven scroll 2 are
Both scrolls rotate while contacting only the outer wall surface 2f of the driven scroll spiral projection 2a and the thin film portion 7 formed on the driving scroll spiral projection 1a.

ここで、上記薄膜部屋みδを回転中に渦を突起体同士が
薄膜部7以外で接触することのない限度で小さくとれば
、接触位置S、基以外薄膜部7を有しない接触予定位置
S4において、双方のスクロール渦巻突起体同士は接触
することなく、径方向すきまは常に微小に保たれること
により、十分な気密性が保たれる。
Here, if the vortex is kept small while rotating the thin film chamber δ to the extent that the protrusions do not come into contact with each other other than the thin film part 7, the contact position S and the planned contact position S4 where there is no thin film part 7 other than the base In this case, the scroll spiral protrusions do not come into contact with each other, and the radial gap is always kept very small, so that sufficient airtightness is maintained.

従って、双方スクロールの渦巻突起体同士は、常に駆動
スクロール渦巻突起体1aの内側壁面1dに形成された
薄膜部7でのみ接触するため、双方の渦巻突起体1a、
2aに作用する押付は力Foおよび摩擦力Ffは、常に
小さく、かつ変動も小さくなる。
Therefore, since the spiral projections of both scrolls always contact each other only at the thin film portion 7 formed on the inner wall surface 1d of the driving scroll spiral projection 1a, both spiral projections 1a,
The pressing force Fo and frictional force Ff acting on 2a are always small and their fluctuations are also small.

前述の第1の実施例では駆動スクロール渦巻突起体1a
の内側壁面ldに外端1eから1巻の範囲に薄膜部7を
設けたが、第2図に示されるような従動スクロール25
としてもよい。すなわち、この従動スクロール25は渦
巻突起体の外端2eから外側壁面2fに0.5巻〜1.
5Sの範囲で薄膜部を設けて構成されている。このよう
な第2の実施例のスクロール流体機械でも第1の実施例
と同様の効果が得られる。なお、従動スクロール渦巻突
起体2aの外側壁面に薄膜部7を設ける場合には、第3
図に示されるように外端2eから1.5巻の範囲に皮膜
を設けても第2の実施例と同様の効果が得られる。但し
、従動スクロール渦巻突起体2aの外側壁面において、
外端2eから0.5巻の範囲は駆動スクロール渦巻突起
体1aと接触しないので、コーティングに要するコスト
を考えると、第2図に示されるように薄膜部の形成範囲
を外周端から0.5巻〜1.5巻の範囲にした方が有利
である。
In the first embodiment described above, the driving scroll spiral protrusion 1a
A thin film portion 7 is provided on the inner wall surface ld in a range of one turn from the outer end 1e, but the driven scroll 25 as shown in FIG.
You can also use it as That is, this driven scroll 25 has 0.5 to 1.5 turns from the outer end 2e of the spiral protrusion to the outer wall surface 2f.
It is constructed by providing a thin film part in the range of 5S. The scroll fluid machine of the second embodiment also provides the same effects as the first embodiment. In addition, when providing the thin film portion 7 on the outer wall surface of the driven scroll spiral protrusion 2a, the third
As shown in the figure, even if the film is provided within a range of 1.5 turns from the outer end 2e, the same effect as in the second embodiment can be obtained. However, on the outer wall surface of the driven scroll spiral protrusion 2a,
Since the range of 0.5 turns from the outer end 2e does not come into contact with the driving scroll spiral protrusion 1a, considering the cost required for coating, the forming range of the thin film part is set to 0.5 turns from the outer end as shown in FIG. It is more advantageous to range from 1.5 turns to 1.5 turns.

前述した各実施例において、薄膜部7は耐摩耗性の優れ
た樹脂材料で構成することができる。このような薄膜部
7によれば同し摩擦力Ffに対する摩耗の度合が小さく
なり、このため、さらに渦巻突起体1a、2aの摩耗お
よび焼付きの恐れが軽減される。
In each of the embodiments described above, the thin film portion 7 can be made of a resin material with excellent wear resistance. With such a thin film portion 7, the degree of wear against the same frictional force Ff is reduced, which further reduces the risk of wear and seizure of the spiral protrusions 1a, 2a.

また、前述の各実施例において、渦巻を形成する曲線は
、インボリュート曲線、アルキメデス曲線、円弧曲線、
又はインボリュート曲線とこれと滑らかに接続する円弧
曲線の組み合わせなど、いずれの形状でもよい。
Furthermore, in each of the above embodiments, the curve forming the spiral is an involute curve, an Archimedean curve, a circular arc curve,
Alternatively, any shape may be used, such as a combination of an involute curve and an arcuate curve smoothly connected to the involute curve.

(発明の効果) 以上説明したように、本発明のスクロール流体機械によ
れば、一方のスクロールの渦巻突起体の外端から約1巻
の範囲の内側壁面および回転中小なくとも前記外端から
約1巻の範囲の内側壁面に接触する他方のスクロールの
渦巻突起体の外側壁面のいずれか一方に薄膜部を形成し
たことにより、双方スクロールの渦巻突起体同士は、回
転中宮に薄膜部でのみで接触することになり、従動スク
ロールおよび駆動スクロールに作用する押付は力および
摩擦力は従来のものに比べて、常に小さく、かつ変動も
小さくなる。この結果、スクロール渦巻突起体部分での
摩耗や焼付きの発生の恐れが従来のものに比べて、大幅
ムこ軽減され、かつ振動や騒音も低減されることによっ
て、信頼性が向上する。
(Effects of the Invention) As explained above, according to the scroll fluid machine of the present invention, the inner wall surface within a range of about one turn from the outer end of the spiral protrusion of one scroll, and the inner wall surface within a range of about one turn from the outer end of the spiral protrusion of one scroll, and at least about about one turn from the outer end during rotation. By forming a thin film part on one of the outer wall surfaces of the spiral protrusions of the other scroll that contacts the inner wall surface of the range of one turn, the spiral protrusions of both scrolls can be connected to the rotating center only by the thin film part. As a result of the contact, the pressing force and frictional force acting on the driven scroll and the driving scroll are always smaller and less variable than in the conventional case. As a result, the risk of wear and seizure occurring in the scroll spiral protrusions is significantly reduced compared to conventional scroll scroll protrusions, and vibration and noise are also reduced, thereby improving reliability.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の第1の実施例に係るスクロール流体機
械の要部を示す断面図、第2図および第3図は本発明の
第2および第3の実施例に係るスクロール流体機械の要
部を示す断面図、第4図は従来のスクロール流体機械を
示す断面図、第5図ないし第7図はそれぞれ従来のスク
ロール流体機械の作動原理を示す要部断面図である。 1・・・駆動スクロール、2・・・従動スクロール、l
a、2a・・・渦巻突起体、ld、le・・・駆動スク
ロール渦巻突起体の内側壁面および外端、2e2f・・
・従動スクロール渦巻突起体の外端および外側壁面、7
・・・薄膜部、20・・・駆動スクロール、25・・・
従動スクロール。 なお、各図中、同一符号は同一部分または相当部分を示
す。 ld 第1図 代理人    大  岩  増  雄 #: J区罰スフロール 第2図 第 図 第 図 a 第 図 (b) 手 続 補 正 土 (自発) 発明の名称 ス ク ロール流体機械 補正をする者 代表者 志 岐 寸 哉 5、 補正の対象 明細書の特許請求の範囲および発明の詳細な説明の欄並
びに図面 6、 補正の内容 (1)  本願特許請求の範囲の記載を別紙の通り訂正
致します。 (2)  本願において、明細書の記載を下記の如く訂
正致します。 (3)  本願において、図面の第1図を別紙の通り訂
正致します。 7、 添付書類の目録 (1)  訂正特許請求の範囲      1通(2)
  訂正図面(第1図)      1通2、特許請求
の範囲 互いに異なる軸心上で自転し、平板上に渦巻状の突起体
を設けた駆動スクロールおよび従動スクロールを備え、
該従動スクロールは前記駆動スクロールの渦巻突起体が
従動スクロールの渦巻突起体ムこ接触してトルクを伝達
することにより回転され、前記駆動スクロールおよび前
記従動スクロールの双方が協働して圧縮室を構成するス
クロール流体機械において、[スクロールの渦巻突起体
の外端から約1巻の範囲の内側壁面および回転牛歩なく
とも前記外端から約1巻の範囲の内側壁面に接触するm
スクロールの渦巻突起体の外側壁面のいずれか一方に薄
膜部を形成したことを特徴とするスクロール流体機械。 以  上
FIG. 1 is a sectional view showing the main parts of a scroll fluid machine according to a first embodiment of the present invention, and FIGS. 2 and 3 are sectional views of scroll fluid machines according to second and third embodiments of the present invention. FIG. 4 is a cross-sectional view showing a conventional scroll fluid machine, and FIGS. 5 to 7 are cross-sectional views of main parts showing the operating principle of the conventional scroll fluid machine. 1... Drive scroll, 2... Followed scroll, l
a, 2a... Spiral projection body, ld, le... Inner wall surface and outer end of driving scroll spiral projection body, 2e2f...
・Outer end and outer wall surface of driven scroll spiral protrusion, 7
... Thin film portion, 20... Drive scroll, 25...
Driven scroll. In each figure, the same reference numerals indicate the same or equivalent parts. ld Figure 1 Agent Masuo Oiwa#: J Ward Punishment Suflore Figure 2 Figure A Figure (b) Procedure amendment soil (spontaneous) Title of invention Scroll Fluid machine Correction person Representative Shiki Sakuya 5. Scope of Claims and Detailed Description of the Invention in the Specification Subject to Amendment, and Drawing 6. Contents of Amendment (1) The description of the scope of the claims of the patent application will be corrected as shown in the attached sheet. (2) In this application, the description in the specification will be corrected as follows. (3) In this application, Figure 1 of the drawings will be corrected as shown in the attached sheet. 7. List of attached documents (1) Amended patent claims 1 copy (2)
Corrected Drawing (Figure 1) 1. Claims: A driving scroll and a driven scroll that rotate on mutually different axes and have spiral protrusions on a flat plate,
The driven scroll is rotated by the spiral projection of the driving scroll contacting the spiral projection of the driven scroll to transmit torque, and both the driving scroll and the driven scroll cooperate to form a compression chamber. In a scroll fluid machine, [m that contacts the inner wall surface within a range of about one turn from the outer end of the spiral protrusion of the scroll and the inner wall surface within a range of about one turn from the outer end without rotating the
A scroll fluid machine characterized in that a thin film portion is formed on either one of the outer wall surfaces of the spiral protrusion of the scroll. that's all

Claims (1)

【特許請求の範囲】[Claims]  互いに異なる軸心上で自転し、平板上に渦巻状の突起
体を設けた駆動スクロールおよび従動スクロールを備え
、該従動スクロールは前記駆動スクロールの渦巻突起体
が従動スクロールの渦巻突起体に接触してトルクを伝達
することにより回転され、前記駆動スクロールおよび前
記従動スクロールの双方が協働して圧縮室を構成するス
クロール流体機械において、一方の前記スクロールの渦
巻突起体の外端から約1巻の範囲の内側壁面および回転
中少なくとも前記外端から約1巻の範囲の内側壁面に接
触する他方のスクロールの渦巻突起体の外側壁面のいず
れか一方に薄膜部を形成したことを特徴とするスクロー
ル流体機械。
A driving scroll and a driven scroll are provided, which rotate on mutually different axes and have a spiral protrusion on a flat plate, and the driven scroll has a spiral protrusion of the driving scroll in contact with a spiral protrusion of the driven scroll. In a scroll fluid machine that is rotated by transmitting torque and in which both the driving scroll and the driven scroll cooperate to form a compression chamber, an area of about one turn from the outer end of the spiral protrusion of one of the scrolls. A scroll fluid machine characterized in that a thin film portion is formed on either the inner wall surface of the spiral protrusion of the other scroll and the outer wall surface of the spiral protrusion of the other scroll that contacts the inner wall surface within a range of at least one turn from the outer end during rotation. .
JP18021690A 1990-07-06 1990-07-06 Scroll fluid machine Pending JPH0466792A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18021690A JPH0466792A (en) 1990-07-06 1990-07-06 Scroll fluid machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18021690A JPH0466792A (en) 1990-07-06 1990-07-06 Scroll fluid machine

Publications (1)

Publication Number Publication Date
JPH0466792A true JPH0466792A (en) 1992-03-03

Family

ID=16079434

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18021690A Pending JPH0466792A (en) 1990-07-06 1990-07-06 Scroll fluid machine

Country Status (1)

Country Link
JP (1) JPH0466792A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5419690A (en) * 1993-02-09 1995-05-30 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Scroll type refrigerant compressor with means for preventing mechanical crack of the housing
EP1753959A2 (en) * 2004-01-13 2007-02-21 Scroll Technologies Scroll compressor with wrap walls provided with an abradable coating and a load-bearing surface at radially outer locations

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5419690A (en) * 1993-02-09 1995-05-30 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Scroll type refrigerant compressor with means for preventing mechanical crack of the housing
EP1753959A2 (en) * 2004-01-13 2007-02-21 Scroll Technologies Scroll compressor with wrap walls provided with an abradable coating and a load-bearing surface at radially outer locations
JP2007518022A (en) * 2004-01-13 2007-07-05 スクロール テクノロジーズ Scroll compressor with lap wall with abradable coating and load bearing surface at radially outer part
EP1753959A4 (en) * 2004-01-13 2010-01-20 Scroll Tech Scroll compressor with wrap walls provided with an abradable coating and a load-bearing surface at radially outer locations

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