JPS61241482A - Vane type compressor - Google Patents

Abstract

PURPOSE:To prevent vane noise to enable smooth running and achieve the attainment of high efficiency of the whole refrigerating cycle due to the reduction in the filling quantity of refrigerator oil by providing a ring-form fitting and a spring which provide vanes with elastic force in a prescribed position of vane in the interior of a rotor. CONSTITUTION:It is so constituted that a ring-form fitting 18 which is concentric with a rotor 12 and a spring 19 whose one end is suspended on the ring-form fitting 18 and the other end on the rotor 12 are provided in the rotor 12, and that the back of vane 14 is pressed by the ring-form fitting 18 approximately for the zone in which the vane 14 passes the place where the rotor 12 is in close vicinity to a cylinder 11. Thus, the vane noise due to vane jump can be prevented, and the smooth running of the vanes 14 can be enabled. In other words, this provides a secure vane noise prevention means not relying on a refrigerator, and simple constitution. Further, since refrigerator oil for the prevention of vane noise becomes unnecessary and a great extent of reduction in the filling quantity of oil can be obtained, the enhancement in the filling quantity of oil can be obtained, the enhancement in the efficiency of whole refrigerating cycle can be achieved and further, since the space for filling refrigerator oil can be reduced, the compressor itself can be made lightweight as well as miniaturized.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は自動車冷房用等に供されるベーン式コンプレッ
サの改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an improvement in a vane compressor used for cooling automobiles and the like.

従来の技術 近年、自動車の空調装置は安全性、快適性の面から今や
必需品であシ、自動車の高級化、高性能化と共に、空調
装置における高性能化はもちろん、静粛性、高効率化等
の要求が高まっている。とりわけ、小型、静粛性を大き
な特徴とするベーン式コンプレッサは自動車のＦＦ化等
のニーズともマツチし、その数は年々増えつつある。Conventional technology In recent years, air conditioning systems for automobiles have become a necessity in terms of safety and comfort.As automobiles become more sophisticated and high-performance, air conditioning systems are becoming more efficient, quieter, and more efficient. Demand is increasing. In particular, vane compressors, which are characterized by their small size and quietness, meet the needs of automobiles such as front-wheel drive, and their number is increasing year by year.

ベーン式コンプレッサは古くからその構造は良く知られ
、特有の問題とされてきたべ−７のチャタリング現象は
、以下に述べる方法で解決されている。真円または楕円
状シリンダのマルチベーンタイプでは、ベーンの背部空
間の圧縮過程を利用した油の閉じ込みによる背圧増加法
がある（例えば冷凍空調技術’　８２−１１　、Ｖｏｌ
　３３，４３９３．Ｐ４７）。The structure of the vane type compressor has been well known for a long time, and the chattering phenomenon, which has been regarded as a unique problem, has been solved by the method described below. For multi-vane type cylinders with perfect circular or elliptical cylinders, there is a method of increasing back pressure by trapping oil using the compression process of the back space of the vanes (for example, Refrigeration and Air Conditioning Technology' 82-11, Vol.
33,4393. P47).

第６図はその具体例で、以下にその原理を説明する。FIG. 6 shows a specific example of this, and the principle thereof will be explained below.

第６図において、１は円筒状内壁を有するシリンダで、
その内側に偏心して配設された真円のロータ２がある。In FIG. 6, 1 is a cylinder having a cylindrical inner wall;
There is a perfectly circular rotor 2 that is eccentrically arranged inside the rotor.

ロータ２には複数個の放射状スリット３があり、その中
をヘ−７（４ａ、４ｂ、４ｃ　）が出没自在に挿入され
ている。図中、Ａ、Ｈの位置のべ一７４ａ、４ｂの背後
空間！ａ、５ｂは側板（図示せず）に設けられた馬蹄形
の油溝６に連通し、ベー７４ａ、４ｂは油圧にょシシリ
ンダ１の内壁に押圧される。Ｃの位置のべ一７４ｃの背
後空間５ｃは、油溝６には連通せず、ベーン４ｃのスリ
ット３内への進入による圧縮作用により、ベーン４Ｃの
背後空間６ｃの油圧はロータ２の回転と共に上昇する。The rotor 2 has a plurality of radial slits 3, into which the grooves 7 (4a, 4b, 4c) are inserted so as to be freely retractable. In the figure, the space behind the benches 74a and 4b at positions A and H! a, 5b communicate with a horseshoe-shaped oil groove 6 provided in a side plate (not shown), and bees 74a, 4b are pressed against the inner wall of the hydraulic cylinder 1. The space 5c behind the bevel 74c at position C does not communicate with the oil groove 6, and due to the compression effect caused by the entry of the vane 4c into the slit 3, the oil pressure in the space 6c behind the vane 4C increases with the rotation of the rotor 2. Rise.

この機構により、吐出孔７からロータ２とシリンダ１の
近接点８付近で発生するベーンのジャンプはシリンダ１
内のガス圧縮による圧力上昇に対し、ベーン背後空間５
ｃ内の油圧高揚により打勝たせ、防止されている。With this mechanism, the vane jump that occurs near the point 8 where the rotor 2 and cylinder 1 are close to each other from the discharge hole 7 can be avoided.
The space behind the vane 5
This is overcome and prevented by increasing the oil pressure in c.

また、別の方法として、ロータを買通するベーンと、特
殊形状のシリンダとを組合せた、いわゆるスルースロッ
トタイプも実用化されている。この方法は、高い加工精
度と共に高粘度の冷凍機油を使い、ベーンとシリンダ内
壁のシールを実現している。In addition, as another method, a so-called through-slot type, which combines vanes that pass through the rotor and a specially shaped cylinder, has also been put into practical use. This method uses high processing precision and high viscosity refrigeration oil to achieve a seal between the vane and the cylinder inner wall.

発明が解決しようとする問題点 しかしながら、両者の方法とも、冷凍機油に依存した構
成であり、冷凍機油が不充分ないし、粘度が低下した場
合にはベーン音の発生、効率の低下、吐出濃度の上昇な
どの問題を生ずる。特に、冷凍サイクル全体の効率の向
上には冷凍機油の量を減少させるか、粘度の低下の方向
があり、高効率化の障害となっている。Problems to be Solved by the Invention However, both methods rely on refrigerating machine oil, and if there is insufficient refrigerating machine oil or its viscosity decreases, vane noise may occur, efficiency may decrease, and discharge concentration may decrease. This causes problems such as rising. In particular, in order to improve the efficiency of the entire refrigeration cycle, the amount of refrigerating machine oil must be reduced or the viscosity must be lowered, which is an obstacle to increasing efficiency.

問題点を解決するための手段 本発明は上記欠点を解消するものであり、ベーンのロー
タ内の所定の位置で弾性力をベーンに与える環状金具及
びバネをロータに設けることによシ、ベーン式コンプレ
ッサの更なる静粛化と、冷凍機油の充てん量の削減によ
−る冷凍サイクル全体の高効率化を同時に図ることを目
的とし、このため円筒状内壁を有するシリンダと、前記
シリンダ内に配設され、複数の放射状スリットを有する
ロータと、前記スリット内を滑動するベーンによって構
成されるベーン式コンプレッサにおいて、前記ロータ内
に、ロータと同心の環状金具と、一方が前記環状金具に
、他方がロータに懸架されたバネを装備したものである
。Means for Solving the Problems The present invention solves the above-mentioned drawbacks by providing the rotor with an annular fitting and a spring that apply elastic force to the vane at a predetermined position within the rotor. The aim is to simultaneously make the compressor even quieter and to increase the efficiency of the entire refrigeration cycle by reducing the amount of refrigeration oil filled.To this end, a cylinder with a cylindrical inner wall and a A vane compressor comprising a rotor having a plurality of radial slits and a vane that slides within the slits, wherein the rotor includes an annular fitting concentric with the rotor, one of which is attached to the annular fitting, and the other of which is attached to the rotor. It is equipped with a spring suspended from.

作　　用 ベーンがロータとシリンダの近接部を通過する前後の走
行区間で、ベーン背後を前記環状金具で押圧せしめる構
成であり、油に頼らない確実な方法であると共に、冷凍
機油の充てん量の削減が出来るなど、多くの利点を有す
る。The structure is such that the back of the vane is pressed by the annular metal fitting in the travel section before and after the vane passes near the rotor and cylinder, which is a reliable method that does not rely on oil and reduces the amount of refrigerating machine oil filled. It has many advantages, such as the ability to

実施例 以下に、本発明の一実施例を第１〜６図にもとづいて説
明する。第１図において、１１は真円で円筒状内壁を有
するシリンダで、内部には近接部１１ａで近接して配設
されたロータ１２がある。EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 to 6. In FIG. 1, a cylinder 11 is a perfect circle and has a cylindrical inner wall, and inside thereof there is a rotor 12 disposed adjacently at a proximal portion 11a.

ロータ１２には複数の放射状スリット１３があり、その
中をベーン１４が滑動する。ペー７１４は両端に段付部
１５が設けである。さらにロータ１２の両側面には内ぐ
り部１６があり、その中には、ペー７１４に対応した押
接部１７をもち、ロータと同心の環状金具１８と、一端
が環状金具１８に、地対がロータ１２に懸架されたコイ
ル状のバネ１９が装備されている。The rotor 12 has a plurality of radial slits 13 through which the vanes 14 slide. The page 714 is provided with stepped portions 15 at both ends. Further, there is a hollow part 16 on both sides of the rotor 12, which has a pressing part 17 corresponding to the page 714, an annular metal fitting 18 concentric with the rotor, and one end of which is connected to the annular metal fitting 18, and has a pressing part 17 corresponding to the page 714. A coil spring 19 suspended from the rotor 12 is installed.

上ｉ成において、動作原理を説明すると、べ一７１４は
、近接部１１ａに近づくにつれ、スリット１３の中に徐
々に没入してゆくが、近接部１１ａの前方の所定角度で
、前記環状金具１８の押圧部１７と、ベーン１４の段付
部１５は接触し、以降近接部１１ａまで、ベーン１４は
没入運動を継続するため、バネ１９は捩られ、ベーン１
４の没入ストロークに対応したバネ力が発生し、ベーン
１４はシリンダ壁に押圧される。一方、シリンダ１１の
内部では、ロータ１２の回転と共に、吸入された冷媒ガ
スは圧縮され、ペー７１４が近接部１１ａに近づくにつ
れ、圧力が上昇するため、ペー７１４は先端部にその圧
力を受け、スリット１３内に没入する方向に押圧される
。ゆえに、ペー７１４がシリンダ１１の内壁から離脱す
ることなく摺動するためには、前記バネ圧は少なくとも
、上述したシリンダ内ガス圧とベーン背後圧の圧力差以
上でなければならない。（むろん、遠心力。To explain the principle of operation in the above formation, the bead 714 gradually sinks into the slit 13 as it approaches the proximal part 11a. The pressing portion 17 of the vane 14 comes into contact with the stepped portion 15 of the vane 14, and since the vane 14 continues its retracting movement up to the proximal portion 11a, the spring 19 is twisted and the vane 1
A spring force corresponding to the retraction stroke of 4 is generated, and the vane 14 is pressed against the cylinder wall. On the other hand, inside the cylinder 11, the sucked refrigerant gas is compressed as the rotor 12 rotates, and as the page 714 approaches the proximal part 11a, the pressure increases, so the page 714 receives that pressure at the tip, It is pressed in the direction of sinking into the slit 13. Therefore, in order for the page 714 to slide without coming off the inner wall of the cylinder 11, the spring pressure must be at least equal to or higher than the pressure difference between the cylinder internal gas pressure and the vane back pressure. (Of course, centrifugal force.

慣性力等も作用するが、低速回転時には無視できるオー
ダーである。） このように、一対の環状金具とバネにより、複数のベー
ンを必要な区間のみ有効にバネ圧を作用させる構造であ
り、取付の為の形状の拡大をすることなく、かつ、少な
い部品点数で構成されている。Although inertial force etc. also act, it is of the order that can be ignored at low speed rotation. ) In this way, the structure uses a pair of annular metal fittings and a spring to effectively apply spring pressure to only the necessary sections of multiple vanes, without enlarging the shape for installation, and with a small number of parts. It is configured.

この実施例では、真円のシリンダの場合を示したが、楕
円状のシリンダの場合でも同様に構成できる。さらには
、バネとしてコイル状の線バネを示したが、板状のつる
巻状バネにし、懸架部をロータの軸部に設ゆても良い。In this embodiment, a case of a perfectly circular cylinder is shown, but the same structure can be applied to an elliptical cylinder. Further, although a coiled wire spring is shown as the spring, a plate-shaped helical spring may be used, and the suspension portion may be provided on the shaft of the rotor.

また、環状金具とバネは一対でなく、片側のみでも原理
上は同じである。Further, the principle is the same even if the annular fitting and the spring are not a pair, but only one side.

発明の効果 以上のように、本発明では、円筒状内壁を有するシリン
ダと、前記シリンダ内に配設され、複数の放射状スリッ
トを有するロー夛と、前記スリット内を滑動するベーン
からなるベーン式コンプレッサにおいて、前記ロータ内
にロータと同心の環状金具と、一方が環状金具に、他方
がロータに懸架ｌされたバネを装備し、ベーンがロータ
とシリンダの近接部を通過する前後の区間、前記環状金
具でベーン背後を押圧せしめる構成であり、冷凍機油に
頼らない確実なベーン音防止手段であると共Ｋ、複数の
ベーンを最低１ケづつの環状金具とバネにより押圧する
シンプルな構成である。さらには、冷凍機油は、ベーン
音防止のためには必要がなくなシ、大幅な充ても量の削
減が出来るため、冷凍サイクル全体の効率の向上が図れ
ると共に、コンプレッサ自体も冷凍機油光てんの為のス
ペースの縮小ができ、小型・軽量化ができるなど、その
波及効果は大なるものがある。Effects of the Invention As described above, the present invention provides a vane compressor comprising a cylinder having a cylindrical inner wall, a row member disposed within the cylinder and having a plurality of radial slits, and a vane sliding within the slit. The rotor is equipped with an annular metal fitting concentric with the rotor, and a spring suspended on one side by the annular metal fitting and on the other side by the rotor, and the area before and after the vane passes near the rotor and the cylinder, It has a configuration in which the back of the vane is pressed by a metal fitting, and is a reliable vane noise prevention means that does not rely on refrigerating machine oil.It is also a simple configuration in which a plurality of vanes are pressed by at least one annular metal fitting and a spring. Furthermore, refrigeration oil is no longer needed to prevent vane noise, and the amount of oil required can be significantly reduced, improving the efficiency of the entire refrigeration cycle. The ripple effects are significant, such as reducing the amount of space required for the device, making it smaller and lighter, and so on.

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

ｔｓ１図は本発明のベーン式コンプレッサの圧縮部の横
断面図、第２図は第１図の縦断面図である。 第３図は本発明の一実施例のベーン式コンプレッサに装
備される環状金具の斜視図、第４図はバネの斜視図、第
５図はベーンの斜視図である。第６図は従来のべ−７式
コンプレッサの圧縮部の横断面図である。 １２・・・・・・Ｃ２−タ、１４・・・・・・ベーン、
１８・・・・・・環状金具、１９・・・・・・バネ。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名第３
図 第４図ts1 is a cross-sectional view of the compression section of the vane compressor of the present invention, and FIG. 2 is a vertical cross-sectional view of FIG. 1. FIG. 3 is a perspective view of an annular fitting installed in a vane compressor according to an embodiment of the present invention, FIG. 4 is a perspective view of a spring, and FIG. 5 is a perspective view of a vane. FIG. 6 is a cross-sectional view of the compression section of a conventional Ba-7 type compressor. 12...C2-ta, 14...Vane,
18... Annular metal fitting, 19... Spring. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 3
Figure 4

Claims (1)

【特許請求の範囲】[Claims] 円筒状内壁を有するシリンダと、前記シリンダ内に配設
され、複数の放射状スリットを有するロータと、前記ス
リット内を滑動する複数のベーンを有するベーン式コン
プレッサにおいて、前記ロータ内に、このロータと同心
の環状金具を設けると共に一方が前記環状金具に、他方
が前記ロータに懸架されたバネを装備し、前記環状金具
は前記ベーンの後端部と当接し、前記ベーンのロータ内
への没入時に前記バネの弾性力で前記ベーンをシリンダ
内壁へ押圧する構造としたベーン式コンプレッサ。A vane type compressor having a cylinder having a cylindrical inner wall, a rotor disposed within the cylinder and having a plurality of radial slits, and a plurality of vanes sliding within the slits, the rotor having a plurality of vanes concentric with the rotor. an annular metal fitting is provided, and one side is equipped with a spring suspended on the annular metal fitting and the other side is suspended on the rotor, the annular metal fitting abuts the rear end of the vane, and when the vane is retracted into the rotor, the annular metal fitting A vane compressor having a structure in which the vane is pressed against the inner wall of the cylinder by the elastic force of a spring.