JPS59176492A - Vane-type compressor - Google Patents

Vane-type compressor

Info

Publication number
JPS59176492A
JPS59176492A JP5205983A JP5205983A JPS59176492A JP S59176492 A JPS59176492 A JP S59176492A JP 5205983 A JP5205983 A JP 5205983A JP 5205983 A JP5205983 A JP 5205983A JP S59176492 A JPS59176492 A JP S59176492A
Authority
JP
Japan
Prior art keywords
pressure chamber
vane
chamber
compressor
pump 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.)
Granted
Application number
JP5205983A
Other languages
Japanese (ja)
Other versions
JPH0121358B2 (en
Inventor
Tsunenori Shibuya
渋谷 常則
Yutaka Ishizuka
豊 石塚
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.)
Bosch Corp
Original Assignee
Diesel Kiki Co Ltd
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 Diesel Kiki Co Ltd filed Critical Diesel Kiki Co Ltd
Priority to JP5205983A priority Critical patent/JPS59176492A/en
Publication of JPS59176492A publication Critical patent/JPS59176492A/en
Publication of JPH0121358B2 publication Critical patent/JPH0121358B2/ja
Granted 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
    • F04C29/00Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02Lubrication; Lubricant separation
    • F04C29/021Control systems for the circulation of the lubricant

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

PURPOSE:To facilitate the vane projection and feed the lubricating oil to a roller bearing when starting and quickly release a high pressure when stopping by providing a check valve opened or closed in resonse to the pressure of a discharge chamber in a vane back-pressure introducing passage. CONSTITUTION:A through hole 22 communicating a discharge pressure chamber 18 and a rear roller bearing 9b is bored on a rear side block 2b, and a check valve 23 is provided on this through hole 22. When the fluid pressure of the discharge chamber 19 is at a predetermined value or lower, a ball valve body 23a is pressed by a spring 23b and the check valve 23 opens the through hole 22. When the fluid pressure of the discharge chamber 18 is at a predetermined value or higher, the ball valve body 23a compresses the spring 23b to close the through hole 22.

Description

【発明の詳細な説明】 本発明は、ベーン型圧縮機において、その起動時ベーン
とポンプハウジング内周面との接触を良好にしだベーン
型圧縮機に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vane type compressor that allows good contact between the vanes and the inner circumferential surface of a pump housing at the time of startup.

ベーン型圧縮機は構成が簡単で高速回転に適するため、
車輌用空気調和装置の冷媒圧縮機として多く適用されて
いる。このムーン型圧縮機ではロータの回転と共にベー
ンがポンプハウジングの内周面に接触して回転しポンプ
室の容積を変化させ、流体を吸入、圧縮、吐出するが、
上記ポンプ室を形成するにはベーンはポンプハウジング
の内周面に十分圧接されなければならない。この圧接力
を発生させるのはロータの回転によるベーンの遠心力と
ロータのスリット下部にベーン背圧室に働く圧力とによ
る。ベーン背圧室の圧力はポンプ室の圧縮流体がベーン
とスリット、ロータ両端面及びヘーン両端面とポンプハ
ウジング内側面との間の各クリアランス等を通ってベー
ン背圧室に流入することによ−)でj5えられる。しか
しながら圧縮機が長時間停止1.された場合、一部のベ
ーンが自重によりスリン1〜内をロータの中心方向に落
込みベーン先端がポンプハウジングの内周面から離れて
いる場合がある。この状態で圧縮機を起動し、特に起動
直後の回転数が低い時はベーンに働く遠心力も小さく、
又圧縮機の圧力も上昇していないためヘーン背圧室の空
間を拡大させてベーンを突出させるに必要なベーン背圧
室の圧力が十分得られず、ベーンはポンプハウジングの
内周面に追従できない。このため起動後圧縮流体の圧力
が上昇するまで暫くの間ベーンがポンプハウジングの内
周面に離着を繰返して打撃音を発生し、又部材を損傷し
たりする。一方フロントヘッドの軸シール室へは。
Vane type compressors have a simple configuration and are suitable for high-speed rotation.
It is often used as a refrigerant compressor in vehicle air conditioners. In this moon-type compressor, as the rotor rotates, the vanes rotate in contact with the inner peripheral surface of the pump housing, changing the volume of the pump chamber, sucking in, compressing, and discharging fluid.
In order to form the pump chamber, the vane must be brought into sufficient pressure contact with the inner peripheral surface of the pump housing. This pressing force is generated by the centrifugal force of the vanes due to the rotation of the rotor and the pressure acting in the vane back pressure chamber below the slits of the rotor. The pressure in the vane back pressure chamber is determined by the compressed fluid in the pump chamber flowing into the vane back pressure chamber through the vane and the slit, the clearances between both end surfaces of the rotor, and the inner surface of the pump housing and both end surfaces of the vane. ) gives you j5. However, the compressor stopped for a long time.1. In this case, some of the vanes may fall down toward the center of the rotor inside the sulin 1 due to their own weight, and the tips of the vanes may be separated from the inner circumferential surface of the pump housing. When the compressor is started in this state, especially when the rotation speed is low immediately after startup, the centrifugal force acting on the vanes is small.
Also, since the pressure of the compressor has not increased, sufficient pressure in the vane back pressure chamber necessary to expand the space in the Hoehn back pressure chamber and cause the vane to protrude cannot be obtained, and the vane follows the inner peripheral surface of the pump housing. Can not. For this reason, the vanes repeatedly detach from and detach from the inner circumferential surface of the pump housing for a while after startup until the pressure of the compressed fluid rises, causing impact noise and damage to the members. On the other hand, to the front head shaft seal chamber.

前記ベーン背圧室に流入する圧縮ガスの一部が更に軸受
部を通じて流入しシール部を潤滑して1)るため、圧縮
機の停止時にはこの高圧力が長時間軸シール室に残存し
て軸シール室からの流体洩れ、潤滑油洩れの原因となっ
ている。
A portion of the compressed gas flowing into the vane back pressure chamber further flows through the bearing section and lubricates the seal section (1), so when the compressor is stopped, this high pressure remains in the shaft seal chamber for a long time and the shaft This causes fluid leakage and lubricant oil leakage from the seal chamber.

上記圧縮機の起動時におけるベーンの突出不良を解決す
るため特開昭56−] 07992においてポンプハウ
ジングの側板にベーン溝底部(前記説明におけるベーン
背圧室)と連通ずるオイル溝を設け、このオイル溝と吐
出通路室(前記説明における吐出圧室と同じ)とを絞り
部を有する連通孔で連通し、又は前記連通孔に弁を設け
て吐出通路室とオイル溝との内圧力の差が所定圧以下の
時連通孔を開き、吐出通路室内圧がオイル溝の内圧より
所定圧以上高い時には連通孔を閉じるようにし、圧縮機
の起動時に吐出通路室から流体をベーン溝底部に導くよ
うにしてベーンの突出を容易にした構成が提案されてい
る。しかしながらこの構成ではオイル溝の形成が複雑で
あり、また連通孔の絞り部は極めて小径の孔とする必要
があり、これらの加工性に不利がある。
In order to solve the problem of vane protrusion at the time of starting the compressor, in JP-A-56-07992, an oil groove communicating with the bottom of the vane groove (the vane back pressure chamber in the above description) is provided in the side plate of the pump housing, and the oil groove is The groove and the discharge passage chamber (same as the discharge pressure chamber in the above description) are communicated through a communication hole having a constriction part, or a valve is provided in the communication hole to maintain a predetermined difference in internal pressure between the discharge passage chamber and the oil groove. The communication hole is opened when the pressure is below the oil groove, and the communication hole is closed when the internal pressure of the discharge passage is higher than the internal pressure of the oil groove by a predetermined pressure or more, and the fluid is guided from the discharge passage chamber to the bottom of the vane groove when the compressor is started. A configuration has been proposed in which the vane can easily protrude. However, with this configuration, the formation of the oil groove is complicated, and the constricted portion of the communication hole must have an extremely small diameter, which is disadvantageous in terms of workability.

本発明は上記の諸問題を解決することを目的とし、円筒
形のケースとフロントヘッドとにより密閉された圧縮機
ケース内にロータを内装したポンプハウジングが収容さ
れ、上記ロータはポンプハウジングのl′Iir後の側
壁に設けられたローラベアリングに両端部を支持された
回転軸に嵌着され、半径方向に設けられた複数のスリッ
トにベーンが進退自在に挿入され、又前後両端面にスリ
ット下部のベーン背圧室とローラベアリングに通じる環
状溝が形成され、前記回転軸が貫通するフロン1−ヘッ
ドの貫通部には軸シール室が設けられ、前記ポンプハウ
ジング内面、ロータ及びベーンによって形成されるポン
プ室の容積変化によって流体が吸入、圧縮され、圧縮流
体がポンプハウジングと圧縮機ケースとの間に形成され
る吐出圧室に吐出されるベーン型圧縮機において、ポン
プハウジング側壁に前記吐出圧室とローラベアリングと
を連通ずる連通孔を穿設して吐出圧室とベーン背圧室及
び軸シール室とをローラベアリングを介して連通せしめ
、上記連通孔には、吐出圧室の圧力が所定値より低い時
には連通孔を開き、吐出圧室の圧力が所定値より高い時
には連通孔を閉じるチェック弁を設けたことにより、圧
縮機の起動時のベーンの突出容易にすると共にローラベ
アリングへ潤滑油を供給し、かつ圧縮機の停止時は速か
に軸シール室に付加している流体の高圧力が解放される
ベーン型圧縮機を提供するものである。
The present invention aims to solve the above-mentioned problems, and a pump housing with a rotor inside is housed in a compressor case that is sealed by a cylindrical case and a front head. The vanes are fitted onto a rotating shaft whose both ends are supported by roller bearings provided on the side wall after the Iir, and vanes are inserted into a plurality of slits provided in the radial direction so as to be able to move forward and backward. An annular groove communicating with the vane back pressure chamber and the roller bearing is formed, and a shaft seal chamber is provided in the Freon 1-head penetrating portion through which the rotating shaft passes, and the pump is formed by the inner surface of the pump housing, the rotor, and the vane. In a vane type compressor, fluid is sucked and compressed by a change in the volume of the chamber, and the compressed fluid is discharged into a discharge pressure chamber formed between a pump housing and a compressor case. A communication hole communicating with the roller bearing is bored to communicate the discharge pressure chamber with the vane back pressure chamber and the shaft seal chamber via the roller bearing, and the pressure in the discharge pressure chamber is lower than a predetermined value through the communication hole. A check valve that opens the communication hole when the pressure in the discharge pressure chamber is low and closes the communication hole when the pressure in the discharge pressure chamber is higher than a predetermined value makes it easier for the vanes to protrude when the compressor is started, and supplies lubricating oil to the roller bearings. The present invention also provides a vane type compressor in which the high pressure of the fluid applied to the shaft seal chamber is quickly released when the compressor is stopped.

以下1本発明の一実施例を図面を参照して説明する。An embodiment of the present invention will be described below with reference to the drawings.

第1図は本ヘーン型圧縮機の垂直縦断面図、第2図は第
1図の■−■線矢視断面図、第3図はチェック弁部の詳
細断面図、第4図は第3図のTV−IV線矢視断面図で
ある。
Figure 1 is a vertical cross-sectional view of this Hoehne type compressor, Figure 2 is a cross-sectional view taken along the line ■-■ in Figure 1, Figure 3 is a detailed cross-sectional view of the check valve section, and Figure 4 is the third It is a sectional view taken along the line TV-IV in the figure.

図において円筒形のケースl日内にポンプハウジング2
の前後の側壁をなすフロントサイドブロック2a、リヤ
サイドブロック2b及びカムリンク2cとにより形成さ
れたポンプハウジング2が収容され、フロン1−サイ1
くブロック2aにフロン1〜ヘツド1bが外接されてケ
ース1aの前面を密閉し圧縮機ケース1を形成している
。上記ポンプハウジング2内には、回転軸3に嵌着され
、半径方向に設けられたトM数のスリンl−4aに板状
のベーン5が進退自在に挿入された円筒形のロータ4が
嵌装され、ポンプハウシング2の内面、ロータ4及びベ
ーン5によって囲まれた空間はポンプ室6を形成する。
In the figure the cylindrical case l day pump housing 2
A pump housing 2 formed by a front side block 2a, a rear side block 2b, and a cam link 2c forming the front and rear side walls of
The compressor case 1 is formed by surrounding the block 2a with the freon 1 to the head 1b and sealing the front surface of the case 1a. Inside the pump housing 2, a cylindrical rotor 4 is fitted onto the rotating shaft 3, and plate-shaped vanes 5 are movably inserted into M number of sills 1-4a provided in the radial direction. A space surrounded by the inner surface of the pump housing 2, the rotor 4, and the vanes 5 forms a pump chamber 6.

ロータ4の前後両端面には環状溝7a 、 7bが形成
され、この環状溝7a、7bけスリンh/laの下部に
形成されるベーン背圧室4bに連通されている。一方フ
ロン1〜サイトブロック2a及びリヤサイ1〜ブロツク
2bの内面に」−記環状溝7a 、 7bに対面し一部
重合する環状油溝88.81)が設けられ、ロータ4と
フロン1−及びリヤサイ1−ブロック2a、2bとの摺
動面の潤滑を確保するようにしている。回転軸3はフロ
ン1−サイ1〜ブロツク2a及びリヤサイトフロック2
bに設けられた前部及び後部ローラベアリング9a、9
bに支持さ戟ると共に、フロントヘット1bに形成され
た軸シール室10を軸シール部10aに気密を保持され
て貫通している。リヤサイドブロック2bの後部には隔
壁12aが接合され、リヤサイドブロック2bの後面と
の間に吸入室12か形成されている。この吸入室12は
圧縮機ケース1の後部に設けられた吸入口13に接続さ
れ、又リヤサイドブロック2bに設けられた吸入ポー1
へ14によりポンプ室6の吸入部に連通される。吸入室
12内にはベーン背圧室4bの圧力を吸入室12に逃が
さないためのキャップ状の隔壁15か後部ローラベアリ
ング9bの外端面を覆って設けられている。ポンプ室6
の吐出部においてカムリング2cに吐出ポー1へ16が
吐出弁17を備えて設けられ、ポンプハウジング2外面
と圧縮機ケース1内面との間に吐出圧室18が形成され
ている。吐出圧室18にはオイルセパレータ19が取付
けられ、ポンプ室6で圧縮された圧縮ガスは吐出弁17
を押上げて吐出圧室18に吐出される時オイルセパレー
タ1つを通過して混入している潤滑油が分離され、更に
S字通路20を通って脈動が緩和されて圧縮機ケース1
後部に設けられた吐出口21より吐出されるようになっ
ている。
Annular grooves 7a and 7b are formed on both front and rear end surfaces of the rotor 4, and these annular grooves 7a and 7b communicate with a vane back pressure chamber 4b formed at the lower part of the ring h/la. On the other hand, annular oil grooves 88 and 81) which face and partially overlap the annular grooves 7a and 7b are provided on the inner surfaces of the front cylinder 1 to the sight block 2a and the rear cylinder 1 to the rear cylinder 2b. 1- It is designed to ensure lubrication of the sliding surfaces with the blocks 2a and 2b. The rotating shaft 3 includes front 1, side 1, block 2a, and rear sight block 2.
Front and rear roller bearings 9a, 9 provided in b
The shaft seal chamber 10 formed in the front head 1b is maintained airtight by the shaft seal portion 10a and passes through the shaft seal chamber 10 formed in the front head 1b. A partition wall 12a is joined to the rear part of the rear side block 2b, and a suction chamber 12 is formed between the partition wall 12a and the rear surface of the rear side block 2b. This suction chamber 12 is connected to a suction port 13 provided at the rear of the compressor case 1, and is also connected to a suction port 13 provided at the rear side block 2b.
14 communicates with the suction section of the pump chamber 6. A cap-shaped partition wall 15 is provided in the suction chamber 12 to cover the outer end surface of the rear roller bearing 9b in order to prevent the pressure of the vane back pressure chamber 4b from escaping into the suction chamber 12. Pump room 6
At the discharge part of the cam ring 2c, a discharge port 1 16 is provided with a discharge valve 17, and a discharge pressure chamber 18 is formed between the outer surface of the pump housing 2 and the inner surface of the compressor case 1. An oil separator 19 is attached to the discharge pressure chamber 18, and the compressed gas compressed in the pump chamber 6 is passed through the discharge valve 17.
When the lubricating oil is pushed up and discharged into the discharge pressure chamber 18, it passes through one oil separator to separate the mixed lubricating oil, and further passes through the S-shaped passage 20, where pulsation is alleviated and the compressor case 1
It is designed to be discharged from a discharge port 21 provided at the rear.

ここで本発明では、リヤサイドブロック2bに吐出圧室
18と後部ローラベアリング9bとを連通ずる連通孔2
2が穿設され、この連通孔22にチェック弁23が設け
られる。詳しくは連通孔22はチェノクブ?23のボー
ル弁体23 aを収容する大径孔22a、ボール弁体2
3aを吐出圧室18側に付勢して該連通孔22を開くス
プリング23bを収容した中径孔22b、その下部の小
径孔22c。
Here, in the present invention, a communication hole 2 is provided in the rear side block 2b that communicates the discharge pressure chamber 18 with the rear roller bearing 9b.
2 is bored, and a check valve 23 is provided in this communication hole 22. For details, is the communication hole 22 a chenokbu? Large diameter hole 22a that accommodates 23 ball valve bodies 23a, ball valve body 2
3a toward the discharge pressure chamber 18 side to open the communication hole 22; a medium diameter hole 22b;

後部ローラヘアリング9bのアウタレース9b。Outer lace 9b of rear roller hair ring 9b.

を取り巻く環状溝22d、アウタレース9h、を゛1′
径方向に貫通する孔が順次連設されてなる。そして大径
孔22aと中径孔22bとの段部はテーパが付されボー
ル弁体23aの弁座23cを成し、又大径孔22aの上
部にはボール弁体23aの抜けIFめのピン23dか挿
入されている。そしてチェック弁23は、吐出圧室I8
の流体圧力が所定値以下の時はボール弁体23aがスプ
リング23F)に押圧されて連通孔22を開き、吐出圧
室18の流体圧力が所定値以上となるとボール弁体23
aはスプリング23bを圧縮して連通孔22を閉じるよ
うに設定されている。
The annular groove 22d surrounding the outer race 9h,
It is formed by sequentially connecting holes that penetrate in the radial direction. The step between the large diameter hole 22a and the medium diameter hole 22b is tapered to form a valve seat 23c of the ball valve body 23a, and the upper part of the large diameter hole 22a is provided with a pin for removing the ball valve body 23a. 23d is inserted. The check valve 23 is connected to the discharge pressure chamber I8.
When the fluid pressure in the discharge pressure chamber 18 is below a predetermined value, the ball valve body 23a is pressed by the spring 23F) to open the communication hole 22, and when the fluid pressure in the discharge pressure chamber 18 is above the predetermined value, the ball valve body 23a is pressed by the spring 23F) to open the communication hole 22.
a is set to compress the spring 23b and close the communication hole 22.

ここで該圧縮機の運転中の吐出中の吐出圧をPd、吸入
圧をPsとすると、圧縮機の運転中のベーン背圧室4b
の圧力Pvは Pv=(Ps+Pd)/2  にほぼ等
しく維持され、又圧縮機停止後の吐出圧18の圧力は流
体(冷媒)の外気温に対する飽和圧力Poまで降下し、
この圧力はP g ) P v  である。そこで前記
チェック弁23を開閉する所定圧PcはほぼPc=Pv
= (Pv十Pd)/2  に設定される。
Here, if the discharge pressure during discharge during operation of the compressor is Pd, and the suction pressure is Ps, then the vane back pressure chamber 4b during operation of the compressor
The pressure Pv of is maintained approximately equal to Pv=(Ps+Pd)/2, and the pressure of the discharge pressure 18 after the compressor is stopped drops to the saturation pressure Po of the fluid (refrigerant) relative to the outside temperature.
This pressure is P g ) P v . Therefore, the predetermined pressure Pc for opening and closing the check valve 23 is approximately Pc=Pv
= (Pv+Pd)/2 is set.

以上のように構成される本発明の作用について次に説明
する。回転軸3が機関等により駆動されロータ4が回転
されるとベーン5の先端はカムリング4cの内周面に密
接し、ポンプハウジング2の内面、ロータ4及びベーン
5によって形成されたポンプ室6はその容積を拡大する
吸入行程で流体を吸入口13から吸入室12及び吸入ポ
ー1−14を通して吸入し、容積を縮小する圧縮行程で
流体を圧縮し、圧縮行程末期の吐出行程で吐出弁17を
押上げて吐出ポート16から吐出圧室18に吐出し、こ
の圧縮流体は吐出圧室18のオイルセパレータ19を通
過する時混入している潤滑油を分離して蓄圧され、その
後吐出口21より外部回路に供給される。」;記正規の
作動に対して圧縮機が長時間停止され一部のベーン5が
自重によりスリット4a内をロータ4の中心方向に落込
み先端がカムリンク2cの内周面から離れている状態で
圧縮機を起動させ、しかも起動直後の回転数が低い場合
ベーン5に働く遠心力は小さく、かつ圧縮機の圧力も上
肩していないためベーン5を突出させるに必要なベーン
背圧室4hの圧力が十分でない。
The operation of the present invention configured as described above will be explained next. When the rotating shaft 3 is driven by an engine or the like and the rotor 4 is rotated, the tip of the vane 5 comes into close contact with the inner peripheral surface of the cam ring 4c, and the pump chamber 6 formed by the inner surface of the pump housing 2, the rotor 4, and the vane 5 is closed. In the suction stroke to expand the volume, fluid is sucked from the suction port 13 through the suction chamber 12 and the suction port 1-14, the fluid is compressed in the compression stroke to reduce the volume, and the discharge valve 17 is closed in the discharge stroke at the end of the compression stroke. The compressed fluid is pushed up and discharged from the discharge port 16 to the discharge pressure chamber 18. When this compressed fluid passes through the oil separator 19 of the discharge pressure chamber 18, the lubricating oil mixed in is separated and the pressure is accumulated, and then the fluid is released from the discharge port 21 to the outside. Supplied to the circuit. '': The compressor is stopped for a long time in contrast to normal operation, and some of the vanes 5 fall into the slit 4a toward the center of the rotor 4 due to their own weight, and their tips are separated from the inner peripheral surface of the cam link 2c. When the compressor is started, and the rotational speed is low immediately after startup, the centrifugal force acting on the vanes 5 is small, and the compressor pressure has not reached its peak, so the vane back pressure chamber 4 hours required to make the vanes 5 protrude. pressure is not sufficient.

そして従来の圧縮機ではベーン5とスリン1〜4a、ロ
ータ4の両端面及びベーン5の両端とフロント及びリヤ
サイドブロック2a、2bの内側面との間の各クリアラ
ンスには潤滑油が残留していてベーン背圧室4bは密封
状態になっていてベーン5は突出を阻害され、前記した
ようにベーンがカムリング2cの内周面に離着を繰返し
て打撃音を発し、又部材を損傷する。ここで本圧縮機で
はリヤサイトブロック2bに突出圧室18と後部ローラ
ベアリング9bとを連通ずる連通孔22が穿設され、こ
こに吐出圧室18の圧力が所定圧力以下の時は連通孔2
2を開き、吐出圧室18の圧力が所定値以上になった時
は連通孔22を閉じるチェック弁23が設けられている
ため2ベーン5がスリット4a内を落込み先端が力11
リング2cの内周面から離れ、かつ該圧縮機の圧力か一
ヒ昇していない起動時、突出圧室■8の圧力は所定値以
ドであって連通孔22は開かれ、ベーン背圧室は後部ロ
ーラベアリング9bの間隙、後部環状溝7F)を通して
吐出圧室18に開放されている。従って該圧縮機の起動
時、ベーン5に働く遠心力が小さく、ベーン背圧室4b
の背圧が上昇していなくてもベーン背圧室4hにベーン
5が突出するのに必要な量の流体が吐出圧室18から連
通孔22.後部ローラベアリング9b、後部環状(!!
obを通して補給され、ベーン5は遠心力で速やかに突
出しカムリンク2cの内周面に密接して圧縮機は直ちに
正常な作動状態に入ることができる。圧縮機の作動によ
り吐出圧室18の圧力が所定値以上に」二昇するとチェ
ック弁23は連通孔22を閉じ、高圧の吐出圧がベーン
背圧室4bに動くのを防止するからベーン5先端の圧接
力は適正に保持される。尚上記圧縮機の起動時において
吐出圧室18の流体は後部ローうへアリング9hと共に
前部ローラベアリング9aに後部環状溝7b、ベーン背
圧室4b、前部環状溝7aを通して流れ、更に軸シール
室1゜に流入し混入している潤滑油を供給するから圧縮
機か長時間停止1−されていてローラベアリング及び軸
シール部]Oaが油切れを起していても潤滑及びシール
か支障なく開始される。圧縮機が停止され吐出圧室18
の流体圧力が所定値以下に低下するとチェックク弁23
は連通孔22を開(から軸シール室10に付加していた
流体の高圧力は吐出圧室18に解放され、圧縮機停止中
の軸シール室10からの流体洩九、潤滑油洩れを防くこ
とができる。
In conventional compressors, lubricating oil remains in the clearances between the vane 5 and the sulins 1 to 4a, both end surfaces of the rotor 4, and the inner surfaces of the front and rear side blocks 2a and 2b. Since the vane back pressure chamber 4b is in a sealed state, the vane 5 is prevented from protruding, and as described above, the vane repeatedly attaches to and detaches from the inner peripheral surface of the cam ring 2c, producing a striking sound and damaging the member. Here, in this compressor, a communication hole 22 is bored in the rear sight block 2b to communicate the protrusion pressure chamber 18 and the rear roller bearing 9b.
Since a check valve 23 is provided which opens the valve 2 and closes the communication hole 22 when the pressure in the discharge pressure chamber 18 exceeds a predetermined value, the vane 5 falls into the slit 4a and the tip ends under the force 11.
At startup, when the compressor is away from the inner circumferential surface of the ring 2c and the pressure of the compressor has not yet risen, the pressure in the protruding pressure chamber 8 is below a predetermined value, the communication hole 22 is opened, and the vane back pressure is increased. The chamber is open to the discharge pressure chamber 18 through the gap between the rear roller bearings 9b and the rear annular groove 7F. Therefore, when the compressor is started, the centrifugal force acting on the vanes 5 is small, and the vane back pressure chamber 4b
Even if the back pressure of the vane 5 does not increase, the amount of fluid necessary for the vane 5 to protrude into the vane back pressure chamber 4h flows from the discharge pressure chamber 18 to the communication hole 22. Rear roller bearing 9b, rear annular (!!
The vanes 5 are replenished through the compressor ob, and the vanes 5 quickly protrude due to centrifugal force and come into close contact with the inner peripheral surface of the cam link 2c, so that the compressor can immediately enter a normal operating state. When the pressure in the discharge pressure chamber 18 rises above a predetermined value due to the operation of the compressor, the check valve 23 closes the communication hole 22 and prevents the high discharge pressure from moving to the vane back pressure chamber 4b. The pressure contact force is maintained appropriately. When the compressor is started, the fluid in the discharge pressure chamber 18 flows through the rear row bearing 9h, the front roller bearing 9a, the rear annular groove 7b, the vane back pressure chamber 4b, and the front annular groove 7a, and further flows through the shaft seal. The lubricating oil that flows into the chamber 1° is supplied, so even if the compressor is stopped for a long time and the roller bearing and shaft seal parts Oa run out of oil, there will be no problem with the lubrication and sealing. Begins. The compressor is stopped and the discharge pressure chamber 18
When the fluid pressure decreases below a predetermined value, the check valve 23
opens the communication hole 22 (the high pressure of the fluid applied to the shaft seal chamber 10 is released to the discharge pressure chamber 18, preventing fluid leakage and lubricating oil leakage from the shaft seal chamber 10 when the compressor is stopped). You can

以上詳細に説虹したように本発明では、円筒形のケース
とフロントヘッドとにより密閉された圧縮機ケース内に
ロータを内装したポンプハウジングが収容され、上記ロ
ータはポンプハウジングの前後の側壁に設けられたロー
ラベアリングに両端部を支持された回転軸に嵌着され、
半径方向に設けられた複数のスリンi−にベーンが進退
自在に挿入され、又前後両端面にスリン1〜下部のベー
ン背圧室とローラベアリングに通じる環状溝が形成され
、前記回転軸が貫通するフロントヘッドめ貫通部には軸
シール室が設けられ、前記ポンプハウジング内面、ロー
タ及びベーンによって形成されるポンプ室の容積変化に
よって流体が吸入、圧縮され、圧縮流体がポンプハウジ
ングと圧縮機ケースとの間に形成される吐出圧室に吐出
されるベーン型圧縮機において、ポンプハウジング側壁
に前記吐出圧室とローラベアリングとを連通ずる連通孔
を穿設して吐出圧室とベーン背圧室及び軸シール室とを
ローラベアリングを介して連通せしめ、上記連通孔には
、吐出圧室の圧力が所定値より低い時には連通孔を開き
、吐出圧室の圧力が所定値より高い時には連通孔を閉じ
るチェック弁を設けたことにより、該圧縮機の起動時ベ
ーンに働く遠心力が小さく、ベーン背圧室の背圧がhm
−していなくてもベーン背圧室にベーンが突出するのに
必要な量の流体が吐出圧室18から補給されてスリット
内に落込んでいたベーンは遠心力で速やかに突出し、力
11リングの内周面に密接して圧縮機は直ちに正常な作
動状態に入ることができ、ベーンがカムリンクの内周面
を叩く打撃音を解消し、かつ部材のMJ傷を防止する。
As described in detail above, in the present invention, a pump housing with a rotor inside is housed in a compressor case that is sealed by a cylindrical case and a front head, and the rotor is installed on the front and rear side walls of the pump housing. It is fitted onto a rotating shaft whose both ends are supported by roller bearings.
A vane is inserted into a plurality of sulins I- provided in the radial direction so as to be able to move forward and backward, and an annular groove is formed on both the front and rear end surfaces of the sulins 1 to the lower vane back pressure chamber and the roller bearing, and the rotating shaft passes through the vanes. A shaft seal chamber is provided in the front head penetration part, and fluid is sucked and compressed by the change in volume of the pump chamber formed by the inner surface of the pump housing, the rotor, and the vanes, and the compressed fluid is transferred between the pump housing and the compressor case. In a vane type compressor that discharges into a discharge pressure chamber formed between the pump housing and the roller bearing, a communication hole is bored in the side wall of the pump housing to communicate the discharge pressure chamber and the roller bearing. The communication hole is communicated with the shaft seal chamber via a roller bearing, and the communication hole is opened when the pressure in the discharge pressure chamber is lower than a predetermined value, and closed when the pressure in the discharge pressure chamber is higher than a predetermined value. By providing a check valve, the centrifugal force acting on the vanes when the compressor is started is small, and the back pressure in the vane back pressure chamber is reduced to hm.
-Even if the vane does not do so, the amount of fluid necessary for the vane to protrude into the vane back pressure chamber is replenished from the discharge pressure chamber 18, and the vane that had fallen into the slit immediately protrudes due to the centrifugal force, and the force of the force 11 ring Being in close contact with the inner circumferential surface, the compressor can immediately enter a normal operating state, eliminating the impact sound of the vane hitting the inner circumferential surface of the cam link, and preventing MJ damage to the member.

又起動時ローラヘアリング及び軸シール室に潤滑油を混
入した流体がdε人するから圧縮機が長時間停止にされ
ていてローラベアリング及び軸シール部が油切れを起し
ていても潤滑及びシールが支障なく開始される。更に圧
縮機の停止時は軸シール室に付加していた流体の高圧力
は連通孔から吐出圧室へ解放され軸シール室は低圧に保
たれるから。
In addition, since fluid containing lubricating oil enters the roller hair ring and shaft seal chamber at startup, even if the compressor is stopped for a long time and the roller bearing and shaft seal run out of oil, the lubrication and sealing will continue. starts without any problem. Furthermore, when the compressor is stopped, the high pressure of the fluid applied to the shaft seal chamber is released from the communication hole to the discharge pressure chamber, and the shaft seal chamber is maintained at a low pressure.

圧縮機停止中の軸シール室からの流体洩れ、潤111油
洩れを防ぐことができる。
Fluid leakage and oil leakage from the shaft seal chamber when the compressor is stopped can be prevented.

尚本発明では加工に不利な小径孔や複雑なオイル溝がな
いため製作が容易であり、かつ従来の圧縮機を簡単に改
造することも可能である。
The present invention is easy to manufacture because it does not have small-diameter holes or complicated oil grooves that are disadvantageous to machining, and it is also possible to easily modify a conventional compressor.

又曲記実施例におけるチェック弁を設けた連通孔はフロ
ン1−サイドブロックに穿設し、吐出圧室と前部ローラ
ベアリングとを連通しても同等の作用効果を呈するもの
である。
Furthermore, the same effect can be obtained even if the communication hole provided with the check valve in the embodiment described above is bored in the front 1 side block to communicate the discharge pressure chamber and the front roller bearing.

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

図面は本発明の一実施例を示し、第1図は本ベーン型圧
縮機の垂直縦断面図、第2図は第1図のn−n線矢視断
面図、第3図はチェック弁部の詳細断面図、第4図は第
3図のIV −rV線矢視断面図である。 1・・・圧縮機ケース、1a・・・I′T7筒形のケー
ス。 ■b・・・フロン1−ヘッド、2・・・ポンプハウジン
グ、2a・・・フロントサイドブロック、2b・・・リ
ヤサイドブロック、2c・・・カムリング、3・・・回
転軸、4・・・ロータ、4a・・・スリンl−,4b・
・・ベーン背圧室。 5・・・ベーン、6・・・ポンプ室、7a 、 7b・
・・環状孔、9a、 9b・・・ローラベアリング、1
o・・・軸シール室、18・・・吐出圧室、22・・・
連通孔、23・・・チェック弁。 出願人  ヂーゼル機器株式会社 代理人  弁理士 横部 緻彦 第2図 手続補正書 (自発) 昭和58年10月17日 特許庁長官 若 杉 和 夫 殿 1、事件の表示 昭和58年特許願第52059号 2、発明の名称 ベーン型圧縮機 3、補正をする者 事件との関係  特許出願人 住所 東京都渋谷区渋谷 3丁目6番7号名称 (33
3)   ヂーゼル機器株式会社代表者   望  月
  −成 4、代理人 住所 東京都豊島区東池袋3丁目2番4号サンシャイン
コーケンプラザ301号 〒170  電話03(983)0926 (代)氏名
 弁理士(81,88)  渡  部  敏  彦5、
補正の対象 明細書の発明の詳細な説明の欄 6、補正の内容 明細書の発明の詳細な説明の欄 イ) 明細書の第2頁の最下行の[下部にベーン背圧室
に働く」を[下部に働くベーン背圧室の」ど補正する6 0) 同第6頁の第3行目の「出容易に」を「出を容易
に」と補正する。 ハ) 同第9百下かL′:、第3行目の[運転中の吐出
中の吐出圧を」を「運転中の吐出圧を」と補正する。 二) 同第11頁の下から第5行目の「突出圧室」を「
吐出圧室」と補正する。 ホ) 同第12頁の第4行目の「突出圧室」を「吐出圧
室Jと補正する。 以上
The drawings show one embodiment of the present invention; FIG. 1 is a vertical cross-sectional view of the vane type compressor, FIG. 2 is a cross-sectional view taken along line nn in FIG. 1, and FIG. 3 is a check valve section. 4 is a sectional view taken along the line IV-rV in FIG. 3. 1...Compressor case, 1a...I'T7 cylindrical case. ■b...Freon 1-head, 2...Pump housing, 2a...Front side block, 2b...Rear side block, 2c...Cam ring, 3...Rotating shaft, 4...Rotor , 4a... Surin l-, 4b.
...Vane back pressure chamber. 5... Vane, 6... Pump chamber, 7a, 7b.
...Annular hole, 9a, 9b...Roller bearing, 1
o...Shaft seal chamber, 18...Discharge pressure chamber, 22...
Communication hole, 23...check valve. Applicant: Diesel Kiki Co., Ltd. Agent, Patent Attorney: Tomohiko Yokobe Figure 2 Procedural Amendment (Spontaneous) October 17, 1980 Commissioner of the Japan Patent Office Kazuo Wakasugi 1, Indication of Case 1988 Patent Application No. 52059 No. 2, Name of the invention Vane type compressor 3, Relationship to the case of the person making the amendment Patent applicant address 3-6-7, Shibuya, Shibuya-ku, Tokyo Name (33
3) Diesel Kiki Co., Ltd. Representative: Mochizuki-4, Agent Address: 301 Sunshine Koken Plaza, 3-2-4 Higashiikebukuro, Toshima-ku, Tokyo Address: 170 Telephone: 03 (983) 0926 (Representative) Name: Patent Attorney (81, 88) Toshihiko Watanabe5,
Column 6 of the detailed description of the invention in the specification to be amended, Column 6 of the detailed description of the invention in the description of the contents of the amendment. 60) On page 6, in the 3rd line, ``Easy to come out'' is changed to ``Easy to come out''. c) No. 9, L': Correct "discharge pressure during operation" in the third line to "discharge pressure during operation." 2) "Protrusion pressure chamber" in the 5th line from the bottom of page 11
"Discharge pressure chamber". e) "Protrusion pressure chamber" in the 4th line of page 12 is corrected to "discharge pressure chamber J."

Claims (1)

【特許請求の範囲】[Claims] 1、 円筒形のケースとフロントヘッドとにより密閉さ
れた圧縮機ケース内にロータを内装したポンプハウシン
グが収容され、上記ロータはポンプハウジングの前後の
側壁に設けられたローラベアリングに両端部を支持され
た回転軸に嵌着され、半径方向に設けられた複数のスリ
ットにベーンが進退自在に挿入され、又前後両端面にス
リット下部のベーン背圧室とローラベアリングに通じる
環状溝が形成され、前記回転軸が貫通するフロン1−ヘ
ッドの貫通部には軸シール室が設けられ、前記ポンプハ
ウジング内面、ロータ及びベーンによって形成されるポ
ンプ室の容積変化によって流体が吸入、圧縮され、圧縮
流体がポンプハウジングと圧縮機ケースとの間に形成さ
れる吐出圧室に吐出されるベーン型圧縮機において、ポ
ンプハウジング側壁に前記吐出圧室とローラベアリング
とを連通ずる連通孔を穿設して吐出圧室とベーン背圧室
及び軸シール室とをローラベアリングを介して連通せし
め、上記連通孔には、吐出圧室の圧力が所定値より低い
時には連通孔を開き、吐出圧室の圧力が所定値より高い
時には連通孔を閉じるチェック弁を設けたことを特徴と
するベーン型圧縮機。
1. A pump housing containing a rotor is housed in a compressor case that is sealed by a cylindrical case and a front head, and the rotor is supported at both ends by roller bearings provided on the front and rear side walls of the pump housing. The vane is inserted into a plurality of slits provided in the radial direction so as to be able to move forward and backward, and an annular groove communicating with the vane back pressure chamber at the bottom of the slit and the roller bearing is formed on both front and rear end surfaces. A shaft seal chamber is provided in the penetration part of the Freon 1-head through which the rotating shaft passes, and fluid is sucked and compressed by the change in volume of the pump chamber formed by the inner surface of the pump housing, the rotor, and the vanes, and the compressed fluid is pumped. In a vane type compressor that discharges into a discharge pressure chamber formed between a housing and a compressor case, a communication hole is bored in the side wall of the pump housing to communicate the discharge pressure chamber and the roller bearing. and a vane back pressure chamber and a shaft seal chamber through a roller bearing, and the communication hole is opened when the pressure in the discharge pressure chamber is lower than a predetermined value, and when the pressure in the discharge pressure chamber is lower than a predetermined value. A vane type compressor characterized by a check valve that closes the communication hole when the temperature is high.
JP5205983A 1983-03-28 1983-03-28 Vane-type compressor Granted JPS59176492A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5205983A JPS59176492A (en) 1983-03-28 1983-03-28 Vane-type compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5205983A JPS59176492A (en) 1983-03-28 1983-03-28 Vane-type compressor

Publications (2)

Publication Number Publication Date
JPS59176492A true JPS59176492A (en) 1984-10-05
JPH0121358B2 JPH0121358B2 (en) 1989-04-20

Family

ID=12904238

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5205983A Granted JPS59176492A (en) 1983-03-28 1983-03-28 Vane-type compressor

Country Status (1)

Country Link
JP (1) JPS59176492A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4776778A (en) * 1985-11-20 1988-10-11 Diesel Kiki Co., Ltd. Refrigerant compressor with shaft bearing having improved wear resistance
DE3936357A1 (en) * 1988-11-04 1990-05-10 Diesel Kiki Co WING CELL COMPRESSORS
US5096387A (en) * 1989-03-20 1992-03-17 Diesel Kiki Co., Ltd. Vane compressor with means for obtaining sufficient back pressure upon vanes at the start of compressor
KR102177683B1 (en) * 2019-10-30 2020-11-16 영신정공주식회사 Electronic Oil Pump

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018157715A (en) * 2017-03-21 2018-10-04 ファナック株式会社 Electric motor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4834243A (en) * 1971-09-06 1973-05-17

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4834243A (en) * 1971-09-06 1973-05-17

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4776778A (en) * 1985-11-20 1988-10-11 Diesel Kiki Co., Ltd. Refrigerant compressor with shaft bearing having improved wear resistance
DE3936357A1 (en) * 1988-11-04 1990-05-10 Diesel Kiki Co WING CELL COMPRESSORS
US4986741A (en) * 1988-11-04 1991-01-22 Diesel Kiki Co., Ltd. Vane compressor with ball valve located at the end of vane biasing conduit
US5096387A (en) * 1989-03-20 1992-03-17 Diesel Kiki Co., Ltd. Vane compressor with means for obtaining sufficient back pressure upon vanes at the start of compressor
KR102177683B1 (en) * 2019-10-30 2020-11-16 영신정공주식회사 Electronic Oil Pump

Also Published As

Publication number Publication date
JPH0121358B2 (en) 1989-04-20

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