JP3060599B2 - Horizontal multi-cylinder compressor - Google Patents
Horizontal multi-cylinder compressorInfo
- Publication number
- JP3060599B2 JP3060599B2 JP3139200A JP13920091A JP3060599B2 JP 3060599 B2 JP3060599 B2 JP 3060599B2 JP 3139200 A JP3139200 A JP 3139200A JP 13920091 A JP13920091 A JP 13920091A JP 3060599 B2 JP3060599 B2 JP 3060599B2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- drive shaft
- space
- passage
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
- F04C18/3562—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
- F04C18/3564—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
Description
【０００１】[0001]
【産業上の利用分野】本発明は、横形密閉ケーシングの
一側にモータを、他側に、ミドルプレートを介して積層
する複数のシリンダと、フロントヘッドと、リヤヘッド
とを備えた圧縮要素を配設すると共に、該圧縮要素の各
シリンダ内に挿入する前記モータの駆動軸に給油通路を
設けて、該通路の前記リヤヘッド側端部を前記ケーシン
グの油溜部と連通し、前記モータ側端部を前記ケーシン
グ内に開口させて、開口部を前記モータの回転部材に固
定する遠心ポンプに連通させ、該遠心ポンプにより前記
油溜部から前記給油通路内に油を汲上げるごとくなした
横形多気筒圧縮機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horizontal hermetic casing having a motor on one side and a plurality of cylinders stacked on each other via a middle plate, a compression element having a front head and a rear head on the other side. An oil supply passage is provided in a drive shaft of the motor inserted into each cylinder of the compression element, and an end of the passage on the rear head side communicates with an oil reservoir of the casing; Is opened in the casing, and the opening is communicated with a centrifugal pump that fixes the opening to the rotating member of the motor, and the horizontal centrifugal pump is configured to pump oil from the oil reservoir into the oil supply passage by the centrifugal pump. Related to compressors.
【０００２】[0002]
【従来の技術】従来、横形圧縮機は、例えば、実開昭６
０−５２３９５号公報に記載され、また、図４に示すよ
うに、横形密閉ケーシングＣの一側に、回転子Ｍ１と固
定子Ｍ２から成るモータＭを、他側に、シリンダＳと、
フロントヘッドＦと、リヤヘッドＲとを備えた圧縮要素
ＣＰを配設すると共に、該圧縮要素ＣＰのシリンダＳ内
に挿入する前記モータＭの駆動軸Ｋに給油通路Ａを設け
て、該通路Ａの前記リヤヘッドＲ側端部を前記ケーシン
グＣの油溜部Ｏに連通させ、前記モータＭ側端部を前記
ケーシングＣ内に開口させて、この開口部を覆う遠心ポ
ンプＰを前記モータＭの回転子Ｍ１の非圧縮要素ＣＰ側
に固定したものが知られている。また、以上のごとく構
成する前記圧縮機における遠心ポンプＰは、前記回転子
Ｍ１の外径とほぼ同程度の大きさの外径をもつ円板状の
ポンプ板Ｐ１を前記通路Ａの開口部に対向させて、前記
回転子Ｍ１のエンドリングＭ３に固定し、前記回転子Ｍ
１の端面と前記エンドリングＭ３の内面及び前記ポンプ
板Ｐ１の対向内面部によりポンプ室Ｐ２を形成し、か
つ、前記エンドリングＭ３と前記ポンプ板Ｐ１との間
に、径方向外方に向かって開口する開口部Ｐ３を設け
て、前記遠心ポンプＰの回転により前記ポンプ室Ｐ２内
の流体を前記開口部Ｐ３から遠心力で径方向外方に放出
し、該ポンプ室Ｐ２内を負圧状態にして前記油溜部Ｏか
ら前記給油通路Ａ内に油を汲上げるごとくなしていたの
である。2. Description of the Related Art Conventionally, horizontal compressors are, for example,
As shown in FIG. 4, a motor M including a rotor M1 and a stator M2 is provided on one side of a horizontal sealed casing C, and a cylinder S is provided on the other side.
A compression element CP having a front head F and a rear head R is provided, and an oil supply passage A is provided on a drive shaft K of the motor M inserted into a cylinder S of the compression element CP. An end of the rear head R is communicated with an oil reservoir O of the casing C, an end of the motor M is opened in the casing C, and a centrifugal pump P covering the opening is connected to a rotor of the motor M. One fixed to the non-compression element CP side of M1 is known. The centrifugal pump P in the compressor configured as described above has a disk-shaped pump plate P1 having an outer diameter substantially equal to the outer diameter of the rotor M1 at the opening of the passage A. The rotor M1 is fixed to an end ring M3 of the rotor M1 so as to face the rotor M1.
1 and an inner surface of the end ring M3 and an opposing inner surface of the pump plate P1 to form a pump chamber P2, and between the end ring M3 and the pump plate P1 in a radially outward direction. An opening P3 that opens is provided, and by rotating the centrifugal pump P, fluid in the pump chamber P2 is discharged radially outward from the opening P3 by centrifugal force, and the inside of the pump chamber P2 is brought into a negative pressure state. Thus, oil is pumped from the oil reservoir O into the oil supply passage A.
【０００３】また、図４に示したものは、横形一気筒圧
縮機であるが、ミドルプレートを介して積層する複数の
シリンダをもつ横形多気筒圧縮機においても、前記した
構成と同様の遠心ポンプを用いて給油機構を構成するよ
うにしている。FIG. 4 shows a horizontal single-cylinder compressor. However, a horizontal multi-cylinder compressor having a plurality of cylinders stacked via a middle plate also has the same centrifugal pump as described above. Is used to constitute the refueling mechanism.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、横形多
気筒圧縮機に前記給油機構を構成した場合、図４に示す
フロントヘッドＦとリヤヘッドＲとの間に複数のシリン
ダＳ・・・・を配設することになるので、前記フロントヘッ
ドＦとリヤヘッドＲとの間の間隔が大きくなり、前記油
溜部Ｏに連通する前記給油通路Ａのリヤヘッド側端部か
ら前記フロントヘッドＦの軸受部への給油箇所までの距
離が長くなるし、また、複数のシリンダを設けることに
より給油箇所も増えることになるから、前記給油通路Ａ
から各給油箇所に給油される量は、前記リヤヘッドの軸
受部への給油箇所など前記油溜部Ｏからの距離が短いほ
ど充分な量を供給できるが、前記油溜部Ｏから離れてい
る前記フロントヘッドの軸受部への給油に不足が生じ、
この軸受部において焼き付けが生じる問題があった。特
に、圧縮機をインバータ制御により運転する場合、低速
回転で運転するようなときには、前記遠心ポンプＰの給
油能力が落ちるので、さらに前記フロントヘッドの軸受
部への給油不足が生じるのである。However, when the oil supply mechanism is configured in a horizontal multi-cylinder compressor, a plurality of cylinders S are provided between a front head F and a rear head R shown in FIG. Therefore, the distance between the front head F and the rear head R is increased, and lubrication from the rear head side end of the oil supply passage A communicating with the oil reservoir O to the bearing portion of the front head F is performed. Since the distance to the location is increased and the number of refueling locations is increased by providing a plurality of cylinders, the refueling passage A
The amount of oil to be supplied to each oil supply point from the oil supply point to the bearing portion of the rear head can be increased as the distance from the oil reservoir O becomes shorter, but the oil amount supplied to the oil reservoir O is increased. Insufficient lubrication to the front head bearing,
There was a problem that seizure occurred in this bearing portion. In particular, when the compressor is operated by inverter control, and when the compressor is operated at low speed, the oil supply capacity of the centrifugal pump P is reduced, so that the oil supply to the bearing portion of the front head is further insufficient.
【０００５】本発明は、以上の問題に鑑みて成したもの
で、その目的は、給油不足が生じ易いフロントヘッドの
軸受部への給油を確実に行え、該軸受部における焼き付
けを防止する横形多気筒圧縮機を提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to surely supply lubricating oil to a bearing portion of a front head, which is liable to cause a shortage of lubrication, and to prevent burning in the bearing portion. An object of the present invention is to provide a cylinder compressor.
【０００６】[0006]
【課題を解決するための手段】本発明は、上記目的を達
成するために、横型密閉ケーシング１の一側にモータ２
を、他側に、ミドルプレート５を介して積層する複数の
シリンダ３１ａ，３１ｂと、フロントヘッド３２と、リ
ヤヘッド３３とを備えた圧縮要素３を配設すると共に、
該圧縮要素３の各シリンダ３１ａ，３１ｂ内に挿入する
前記モータ２の駆動軸４に給油通路４２を設けて、該通
路４２の前記リヤヘッド３３側端部を前記ケーシング１
の油溜部１ａと連通し、前記モータ２側端部を前記ケー
シング１内に開口させて、開口部を前記モータ２の回転
部材に固定する遠心ポンプ７に連通させ、該遠心ポンプ
７により前記油溜部１ａから前記給油通路４２内に油を
汲上げるごとくなした横形多気筒圧縮機において、前記
ミドルプレート５に、一端が前記油溜部１ａに開口し、
他端が前記駆動軸４の外周面に向かって開口する給油穴
５１を形成すると共に、前記駆動軸４に設ける複数の偏
心部４１ａ，４１ｂのうち少なくともフロントヘッド側
に位置する偏心部４１ａに、該偏心部４１ａの軸方向両
側に位置し、ローラ３５ａ内周面との間に形成される空
間８１，８２を連通する油通路４４を形成し、前記油が
前記空間８１から前記空間８２に強制的に送られるよう
に、前記油通路４４は軸方向に対して角度を付けて傾斜
するように設けられ、前記空間８１は前記ミドルプレー
ト５に設けられる挿通穴５２と前記駆動軸４の外周面と
により形成される隙間５３に連通するように設けたもの
である。 SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a motor-equipped motor with a horizontal closed casing 1 on one side.
On the other side, a compression element 3 including a plurality of cylinders 31a and 31b stacked via a middle plate 5, a front head 32, and a rear head 33 is disposed,
An oil supply passage 42 is provided in the drive shaft 4 of the motor 2 inserted into each of the cylinders 31a and 31b of the compression element 3, and an end of the passage 42 on the rear head 33 side is connected to the casing 1
, The end of the motor 2 side is opened in the casing 1, and the opening is connected to a centrifugal pump 7 which is fixed to a rotating member of the motor 2. In a horizontal multi-cylinder compressor configured to pump oil from the oil reservoir 1a into the oil supply passage 42, one end opens to the middle plate 5 and the oil reservoir 1a,
The other end forms an oil supply hole 51 that opens toward the outer peripheral surface of the drive shaft 4, and at least an eccentric portion 41 a located on the front head side among a plurality of eccentric portions 41 a and 41 b provided on the drive shaft 4 includes: Oil passages 44 are formed on both sides of the eccentric portion 41a in the axial direction and communicate with spaces 81 and 82 formed between the eccentric portion 41a and the inner peripheral surface of the roller 35a.
Forcibly sent from the space 81 to the space 82
The oil passage 44 is inclined at an angle with respect to the axial direction.
The space 81 is provided in the middle play.
And the outer peripheral surface of the drive shaft 4
Provided so as to communicate with a gap 53 formed by
It is.
【０００７】[0007]
【作用】圧縮機の運転時、前記空間８１，８２及び前記
ミドルプレート５の内周面と駆動軸４の外周面との間の
隙間は、前記ケーシング１内空間の圧力に比較して低圧
となるので、前記油溜部１ａの潤滑油を、その圧力差に
より前記ミドルプレート５に形成した前記給油穴５１か
ら前記駆動軸４外周面との間の隙間に汲上げられるので
あり、また、偏心部４１ａ，４１ｂに形成する前記油通
路４４は軸方向に対して角度を付けて傾斜するように設
けられることにより遠心作用により、前記潤滑油が前記
油通路４４を通過し前記空間８１から前記空間８２に強
制的に送られて前記フロントヘッド３２及びリヤヘッド
３３の軸受部へ給油できるのである。特に、給油不足の
生じ易いフロントヘッド３２側の軸受部への給油を確実
に行うことができるので、この軸受部における焼付けを
確実に防止することができる。When the compressor is operating, the spaces between the inner surfaces of the spaces 81 and 82 and the inner surface of the middle plate 5 and the outer surface of the drive shaft 4 are lower in pressure than the pressure in the inner space of the casing 1. Therefore, the lubricating oil in the oil reservoir 1a is pumped by the pressure difference from the oil supply hole 51 formed in the middle plate 5 to the gap between the outer peripheral surface of the drive shaft 4 and the eccentricity. The oil passage formed in the portions 41a and 41b
The path 44 is set to be inclined at an angle to the axial direction.
The lubricating oil is centrifuged by the
Passes through the oil passage 44 and is strong from the space 81 to the space 82
The front head 32 and the rear head
Oil can be supplied to the 33 bearings. In particular, since lubrication can be reliably performed to the bearing portion on the front head 32 side where the shortage of lubrication is likely to occur, seizure in this bearing portion can be reliably prevented.
【０００８】[0008]
【実施例】図１は、横形多気筒圧縮機を示す縦断面図で
あり、横長の密閉ケーシング１内において、底部に油溜
部１ａを形成し、かつ、横方向一側にモータ２を、また
他側に圧縮要素３を配設し、該圧縮要素３と前記モータ
２とを、駆動軸４を介して連動連結している。FIG. 1 is a longitudinal sectional view showing a horizontal multi-cylinder compressor. An oil reservoir 1a is formed at the bottom in a horizontally long hermetic casing 1, and a motor 2 is provided on one side in the horizontal direction. Further, a compression element 3 is provided on the other side, and the compression element 3 and the motor 2 are linked to each other via a drive shaft 4.
【０００９】前記圧縮要素３は、ミドルプレート５を介
して積層する２つのシリンダ３１ａ，３１ｂと、積層し
た両シリンダ３１ａ，３１ｂを挟持するフロントヘッド
３２とリヤヘッド３３とから成り、前記各シリンダ３１
ａ，３１ｂのシリンダ室３４ａ，３４ｂにローラ３５
ａ，３５ｂを内装すると共に、前記駆動軸４の偏心部４
１ａ，４１ｂを前記ローラ３５ａ，３５ｂに嵌合してい
る。尚、前記偏心部４１ａ，４１ｂは、１８０°位相し
て形成している。また、前記ケーシング１には、前記各
シリンダ室３４ａ，３４ｂに連通する、吸入管１１ａ，
１１ｂを取付けると共に、該ケーシング１内における前
記モータ２の非圧縮要素側空間Ｔに開口する外部吐出管
１２を取付けており、前記各吸入管１１ａ，１１ｂから
シリンダ室３４ａ，３４ｂ内に低圧ガス冷媒を吸入して
前記駆動軸４の偏心部４１ａ，４１ｂの偏心回転により
前記シリンダ室３４ａ，３４ｂ内で圧縮し、この圧縮ガ
ス冷媒が前記密閉ケーシング１内に吐出されて、該ケー
シング１に設ける前記外部吐出管１２からケーシング外
部に吐出されるようにしている。The compression element 3 is composed of two cylinders 31a and 31b stacked via a middle plate 5, a front head 32 and a rear head 33 sandwiching both stacked cylinders 31a and 31b.
rollers 35a and 34b in the cylinder chambers 34a and 34b.
a, 35b and the eccentric part 4 of the drive shaft 4
1a and 41b are fitted to the rollers 35a and 35b. The eccentric portions 41a and 41b are formed to be 180 ° out of phase. Further, the casing 1 has a suction pipe 11a, which communicates with each of the cylinder chambers 34a, 34b.
11b, and an external discharge pipe 12 opening in the non-compression element side space T of the motor 2 in the casing 1, and a low-pressure gas refrigerant is introduced from the suction pipes 11a, 11b into the cylinder chambers 34a, 34b. And is compressed in the cylinder chambers 34a and 34b by the eccentric rotation of the eccentric portions 41a and 41b of the drive shaft 4, and the compressed gas refrigerant is discharged into the closed casing 1 and provided in the casing 1. The liquid is discharged from the external discharge pipe 12 to the outside of the casing.
【００１０】前記モータ２は、前記ケーシング１の内壁
に固定するステータ２１と、このステータ２１内で回転
するロータ２２とから成り、該ロータ２２に、前記駆動
軸４を一体に結合している。さらに、前記ロータ２２の
軸方向両端のエンドリング２３，２３には、バランスウ
エイト２４，２４を取付けており、このバランスウエイ
ト２４，２４は、前記エンドリング２３，２３の端面の
半周部に見合う板状に形成している。The motor 2 includes a stator 21 fixed to the inner wall of the casing 1 and a rotor 22 rotating in the stator 21. The drive shaft 4 is integrally connected to the rotor 22. Further, balance weights 24, 24 are attached to the end rings 23, 23 at both ends in the axial direction of the rotor 22, and the balance weights 24, 24 are plates corresponding to the semi-peripheral portions of the end surfaces of the end rings 23, 23. It is formed in a shape.
【００１１】また、前記リヤヘッド３３の端面には、オ
イルチャンバー６１をもつカバー６を取付け、該カバー
６に前記油溜部１ａに連通する給油管６２を接続すると
共に、前記駆動軸４に、軸方向に延びる給油通路４２を
形成し、該給油通路４２の前記リヤヘッド３３側端部を
前記オイルチャンバー６１に開口させて、前記給油通路
４２を前記油溜部１ａに連通する一方、前記給油通路４
２の前記モータ２側端部を前記ケーシング１の非圧縮要
素側空間Ｔ内に開口させると共に、前記モータ２の前記
ロータ２２における前記空間Ｔ側のバランスウエイト２
４に、ポンプ板７１を取付けて、該ポンプ板７１で形成
される空間に前記給油通路４２を開口させて、前記駆動
軸４の回転駆動により前記油溜部１ａから前記給油管６
２を介して前記給油通路４２内に潤滑油を汲上げ、前記
ポンプ板７１と前記エンドリング２３により形成される
開口部から潤滑油を流出させる遠心ポンプ７を形成する
のである。また、前記給油通路４２に、該給油通路４２
から半径方向外方に向けて延び、前記駆動軸４と前記両
ヘッド３２，３３及びローラ３５ａ，３５ｂとの摺接部
分に至る複数の分岐通路４３・・・・を形成して、該給油通
路４２に汲上げられた潤滑油を該分岐通路４３・・・・を介
して各摺接部分に給油する如くしている。A cover 6 having an oil chamber 61 is attached to an end face of the rear head 33, and an oil supply pipe 62 communicating with the oil reservoir 1a is connected to the cover 6, and a shaft is connected to the drive shaft 4. An oil supply passage 42 extending in the direction of the arrow is formed, and an end of the oil supply passage 42 on the rear head 33 side is opened to the oil chamber 61 so that the oil supply passage 42 communicates with the oil reservoir 1a.
2 is opened in the space T on the non-compression element side of the casing 1, and the balance weight 2 on the rotor T side of the motor 2 on the space T side.
4, a pump plate 71 is attached, the oil supply passage 42 is opened in a space defined by the pump plate 71, and the drive shaft 4 is driven to rotate so that the oil sump 1 a
2 to form a centrifugal pump 7 for pumping lubricating oil into the oil supply passage 42 and flowing out lubricating oil from an opening formed by the pump plate 71 and the end ring 23. Further, the oil supply passage 42 is provided in the oil supply passage 42.
And a plurality of branch passages 43 extending radially outward from the drive shaft 4 and reaching the sliding contact between the drive shaft 4 and the heads 32, 33 and the rollers 35a, 35b. The lubricating oil pumped up by 42 is supplied to each sliding contact portion through the branch passages 43.
【００１２】しかして、前記した横形多気筒圧縮機にお
いて、図１乃至図３に示す実施例のように、前記ミドル
プレート５に、一端が前記油溜部１ａに開口し、他端が
前記駆動軸４の外周面に向かって開口する給油穴５１を
形成するのであって、前記ミドルプレート５は、所定厚
みをもち、前記駆動軸４を挿通させる挿通穴５２をもつ
ドーナツ形状に形成しており、このプレート５に形成す
る前記給油穴５１は、前記ミドルプレート５の前記挿通
穴５２から外周面に至って貫通しており、該プレート５
を前記各シリンダ３１ａ，３１ｂ間に配設するときに、
前記給油穴５１の一端が前記油溜部１ａに開口し、他端
が前記駆動軸４の外周面に向かって開口することにな
る。In the horizontal multi-cylinder compressor described above, one end of the middle plate 5 is open to the oil reservoir 1a and the other end is the drive, as in the embodiment shown in FIGS. An oil supply hole 51 that opens toward the outer peripheral surface of the shaft 4 is formed. The middle plate 5 has a predetermined thickness and is formed in a donut shape having an insertion hole 52 through which the drive shaft 4 is inserted. The lubrication hole 51 formed in the plate 5 penetrates from the insertion hole 52 of the middle plate 5 to the outer peripheral surface.
Is disposed between the cylinders 31a and 31b,
One end of the oil supply hole 51 opens to the oil reservoir 1a, and the other end opens toward the outer peripheral surface of the drive shaft 4.
【００１３】また、前記駆動軸４の各偏心部４１ａ，４
１ｂに、該各偏心部４１ａ，４１ｂの軸方向両側に位置
し、ローラ３５ａの内周面との間に形成される空間８
１，８２を連通する油通路４４，４４を形成するのであ
り、これら油通路４４は、図１及び図２に示すように、
前記各偏心部４１ａ，４１ｂの軸方向端面と前記ローラ
３５ａ，３５ｂの内周面、及び、前記ミドルプレート５
により形成する空間８１と、前記各偏心部４１ａ，４１
ｂの軸方向端面と前記ローラ３５ａ，３５ｂの内周面、
及び、各ヘッド３２，３３とにより形成する空間８２と
にそれぞれ開口するように貫通させ、かつ、前記駆動軸
４の回転駆動により前記空間８１の潤滑油が前記空間８
２に強制的に送られるように前記油通路４４を軸方向に
対し角度を付けて傾斜させて形成するのである。また、
前記空間８１は、前記ミドルプレート５の前記挿通孔５
２と前記駆動軸４の外周面とにより形成される隙間５３
に連通している。The eccentric portions 41a, 41 of the drive shaft 4
1b, a space 8 formed on both sides of the eccentric portions 41a, 41b in the axial direction and formed between the eccentric portions 41a, 41b and the inner peripheral surface of the roller 35a.
The oil passages 44, 44 communicating with the oil passages 1, 82 are formed. These oil passages 44, as shown in FIGS.
The axial end surfaces of the eccentric portions 41a and 41b, the inner peripheral surfaces of the rollers 35a and 35b, and the middle plate 5
81 and the eccentric portions 41a, 41
b and the inner peripheral surfaces of the rollers 35a and 35b,
And, it penetrates so as to open to a space 82 formed by each of the heads 32, 33, and the lubricating oil in the space 81 is rotated by the rotation of the drive shaft 4 so that the space 8
The oil passage 44 is formed to be inclined at an angle with respect to the axial direction so as to be forcibly fed to the oil passage 2. Also,
The space 81 is provided with the insertion hole 5 of the middle plate 5.
2 and the gap 53 formed by the outer peripheral surface of the drive shaft 4
Is in communication with
【００１４】尚、前記油通路４４は、給油不足の生じ易
い前記フロントヘッド３２側の偏心部４１ａにのみ設け
るようにしてもよい。また、前記給油路４４は、前記偏
心部４１ａ，４１ｂに貫通させて形成したが、該偏心部
４１ａ，４１ｂの前記ローラ３５ａ，３５ｂとの摺接面
に溝を形成することにより形成してもよい。The oil passage 44 may be provided only in the eccentric portion 41a on the front head 32 side where the shortage of oil supply easily occurs. Further, the oil supply passage 44 is formed so as to penetrate the eccentric portions 41a and 41b, but may be formed by forming a groove in a sliding contact surface of the eccentric portions 41a and 41b with the rollers 35a and 35b. Good.
【００１５】斯くして、圧縮機の運転時、前記空間８
１，８２及び隙間５３は、前記ケーシング１内空間の圧
力に比較して低圧となるし、前記偏心部４１ａ，４１ｂ
に形成した前記油通路４４，４４を傾斜させ、その遠心
作用により前記空間８１から前記空間８２に強制的に潤
滑油を送るようにし、前記隙間５３がより低圧状態にな
るようにしているから、前記油溜部１ａの潤滑油は、そ
の圧力差により前記ミドルプレート５に形成した前記給
油穴５１から前記隙間５３へと汲上げられるのであり、
該隙間５３に汲上げられた潤滑油は、前記空間８１，８
１から前記油通路４４，４４を通過させて前記空間８
２，８２に送られ、前記フロントヘッド３２及び前記リ
ヤヘッド３３の軸受部へ給油されるのであり、各ヘッド
３２，３３の軸受部への給油が確実に行われるのであ
る。特に、給油不足の生じ易いフロントヘッド３２側の
軸受部への給油を確実に行うことができるので、この軸
受部における焼付けを確実に防止することができるので
ある。Thus, during operation of the compressor, the space 8
1, 82 and the gap 53 have a lower pressure than the pressure in the inner space of the casing 1, and the eccentric portions 41a, 41b
The lubricating oil is forcibly sent from the space 81 to the space 82 by the centrifugal action of the oil passages 44 and 44 formed in the space 53 so that the gap 53 is in a lower pressure state. The lubricating oil in the oil reservoir 1a is pumped from the oil supply hole 51 formed in the middle plate 5 to the gap 53 by the pressure difference,
The lubricating oil pumped into the gap 53 is supplied to the spaces 81 and 8.
1 through the oil passages 44
2 and 82, and is supplied to the bearings of the front head 32 and the rear head 33, so that the bearings of the heads 32 and 33 are reliably supplied with oil. In particular, since lubrication can be reliably performed to the bearing portion on the front head 32 side where shortage of lubrication is likely to occur, seizure in this bearing portion can be reliably prevented.
【００１６】以上説明した実施例は、二つのシリンダ３
１ａ，３１ｂを用い、２気筒としたが３気筒以上でも同
様に適用できるし、また、前記油通路４４を傾斜させ偏
心部４１ａ，４１ｂの回転による遠心作用で強制給油可
能としたが、前記油通路４４は駆動軸４の軸心と平行に
設けてもよい。The embodiment described above has two cylinders 3
1a and 31b are used and two cylinders are used, but three or more cylinders can be used in the same manner. In addition, the oil passage 44 is inclined so that centrifugal action by the rotation of the eccentric portions 41a and 41b enables forced oil supply. The passage 44 may be provided in parallel with the axis of the drive shaft 4.
【００１７】[0017]
【発明の効果】前記ミドルプレート５に、一端が前記油
溜部１ａに開口し、他端が前記駆動軸４の外周面に向か
って開口する給油穴５１を形成すると共に、前記駆動軸
４に設ける複数の偏心部４１ａ，４１ｂのうち少なくと
もフロントヘッド側に位置する偏心部４１ａに、該偏心
部４１ａの軸方向両側に位置し、ローラ３５ａ内周面と
の間に形成される空間８１，８２を連通する油通路４４
を形成し、前記油が前記空間８２に強制的に送られるよ
うに、前記油通路４４は軸方向に対して角度を付けて傾
斜するように設けられ、前記空間８１は前記ミドルプレ
ート５に設けられる挿通穴５２と前記駆動軸４の外周面
とにより形成される隙間５３に連通するように設けるこ
とにより、圧縮機の運転時、前記空間８１，８２及び前
記ミドルプレート５の内周面と駆動軸４の外周面との間
の隙間は、前記ケーシング１内空間の圧力に比較して低
圧となるので、前記油溜部１ａの潤滑油は、その圧力差
により前記ミドルプレート５に形成した前記給油穴５１
から前記駆動軸４外周面との間の隙間に汲上げられるの
であり、また、偏心部４１ａ，４１ｂに形成する前記油
通路４４は軸方向に対して角度を付けて傾斜するように
設けられることにより遠心作用により、前記潤滑油が前
記油通路４４を通過し前記空間８１から前記空間８２に
強制的に送られて前記フロントヘッド３２及びリヤヘッ
ド３３の軸受部へ給油させることができるのである。特
に、給油不足の生じ易いフロントヘッド３２側の軸受部
への給油をも確実に行うことができるので、この軸受部
における焼付けを確実に防止することができるのであ
る。According to the present invention, the middle plate 5 is provided with an oil supply hole 51 having one end opening to the oil reservoir 1a and the other end opening to the outer peripheral surface of the drive shaft 4. Among the plurality of eccentric portions 41a and 41b provided, at least at the eccentric portion 41a located on the front head side, spaces 81 and 82 formed on both sides in the axial direction of the eccentric portion 41a and formed between the inner peripheral surface of the roller 35a. Oil passage 44 that communicates
And the oil is forcibly sent to the space 82.
Thus, the oil passage 44 is inclined at an angle to the axial direction.
The space 81 is provided so as to be inclined.
Insertion hole 52 provided in the port 5 and the outer peripheral surface of the drive shaft 4
Are provided so as to communicate with the gap 53 formed by
Accordingly, during operation of the compressor, the gaps between the inner peripheral surfaces of the spaces 81 and 82 and the inner peripheral surface of the middle plate 5 and the outer peripheral surface of the drive shaft 4 are lower in pressure than the pressure in the inner space of the casing 1. Therefore, the lubricating oil in the oil reservoir 1a is supplied to the oil supply hole 51 formed in the middle plate 5 by the pressure difference.
From the outer peripheral surface of the drive shaft 4 and the oil formed on the eccentric portions 41a and 41b.
The passage 44 is inclined at an angle to the axial direction.
By being provided, the lubricating oil is
After passing through the oil storage passage 44 from the space 81 to the space 82
Forcibly sent to the front head 32 and rear head
The oil can be supplied to the bearing portion of the arm 33. Special
In addition, since the lubrication of the bearing portion on the front head 32 side where the lubrication shortage is likely to occur can be reliably performed, seizure in the bearing portion can be reliably prevented.
【図１】本発明の圧縮機を示す縦断面図。FIG. 1 is a longitudinal sectional view showing a compressor of the present invention.
【図２】本発明の実施例におけるミドルプレートを示す
断面図。FIG. 2 is a sectional view showing a middle plate according to the embodiment of the present invention.
【図３】本発明の実施例における駆動軸の偏心部を示す
斜視図。FIG. 3 is a perspective view showing an eccentric portion of a drive shaft in the embodiment of the present invention.
【図４】従来例を示す説明図。FIG. 4 is an explanatory view showing a conventional example.
１ 密閉ケーシング １ａ 油溜部 ２ モータ ３ 圧縮要素 ３１ａ，３１ｂ シリンダ ３２ フロントヘッド ３３ リヤヘッド ４ 駆動軸 ４１ａ，４１ｂ 偏心部 ４２ 給油通路 ４４ 油通路 ５ ミドルプレート ５１ 給油穴 ７ 遠心ポンプ ８１，８２ 空間 DESCRIPTION OF SYMBOLS 1 Closed casing 1a Oil reservoir 2 Motor 3 Compression element 31a, 31b Cylinder 32 Front head 33 Rear head 4 Drive shaft 41a, 41b Eccentric part 42 Oil supply passage 44 Oil passage 5 Middle plate 51 Oil supply hole 7 Centrifugal pump 81, 82 Space
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭63−162991（ＪＰ，Ａ) 実開 昭60−52395（ＪＰ，Ｕ) 実開 平３−1295（ＪＰ，Ｕ) 実開 昭63−134190（ＪＰ，Ｕ) 実公 昭56−48943（ＪＰ，Ｙ２) (58)調査した分野(Int.Cl.7，ＤＢ名) F04C 23/00 - 29/10 331 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-161291 (JP, A) JP-A 60-52395 (JP, U) JP-A 3-1295 (JP, U) JP-A 63-12995 134190 (JP, U) Jiko 56-48943 (JP, Y2) (58) Fields investigated (Int. Cl. 7 , DB name) F04C 23/00-29/10 331
Claims (1)
を、他側に、ミドルプレート５を介して積層する複数の
シリンダ３１ａ，３１ｂと、フロントヘッド３２と、リ
ヤヘッド３３とを備えた圧縮要素３を配設すると共に、
該圧縮要素３の各シリンダ３１ａ，３１ｂ内に挿入する
前記モータ２の駆動軸４に給油通路４２を設けて、該通
路４２の前記リヤヘッド３３側端部を前記ケーシング１
の油溜部１ａと連通し、前記モータ２側端部を前記ケー
シング１内に開口させて、開口部を前記モータ２の回転
部材に固定する遠心ポンプ７に連通させ、該遠心ポンプ
７により前記油溜部１ａから前記給油通路４２内に油を
汲上げるごとくなした横形多気筒圧縮機において、前記
ミドルプレート５に、一端が前記油溜部１ａに開口し、
他端が前記駆動軸４の外周面に向かって開口する給油穴
５１を形成すると共に、前記駆動軸４に設ける複数の偏
心部４１ａ，４１ｂのうち少なくともフロントヘッド側
に位置する偏心部４１ａに、該偏心部４１ａの軸方向両
側に位置し、ローラ３５ａ内周面との間に形成される空
間８１，８２を連通する油通路４４を形成し、 前記油が前記空間８１から前記空間８２に強制的に送ら
れるように、前記油通路４４は軸方向に対して角度を付
けて傾斜するように設けられ、 前記空間８１は前記ミドルプレート５に設けられる挿通
穴５２と前記駆動軸４の外周面とにより形成される隙間
５３に連通するように設けられる、 ことを特徴とする横
形多気筒圧縮機。1. A motor 2 is provided on one side of a horizontal sealed casing 1.
On the other side, a compression element 3 including a plurality of cylinders 31a and 31b stacked via a middle plate 5, a front head 32, and a rear head 33 is disposed,
An oil supply passage 42 is provided in the drive shaft 4 of the motor 2 inserted into each of the cylinders 31a and 31b of the compression element 3, and an end of the passage 42 on the rear head 33 side is connected to the casing 1
, The end of the motor 2 side is opened in the casing 1, and the opening is connected to a centrifugal pump 7 which is fixed to a rotating member of the motor 2. In a horizontal multi-cylinder compressor configured to pump oil from the oil reservoir 1a into the oil supply passage 42, one end opens to the middle plate 5 and the oil reservoir 1a,
The other end forms an oil supply hole 51 that opens toward the outer peripheral surface of the drive shaft 4, and at least an eccentric portion 41 a located on the front head side among a plurality of eccentric portions 41 a and 41 b provided on the drive shaft 4 includes: located on both sides in the axial direction of the eccentric portion 41a, forcing a space 81 formed between the inner roller 35a peripheral surface to form an oil passage 44 communicating the oil from the space 81 to the space 82 Sent
So that the oil passage 44 is angled with respect to the axial direction.
And the space 81 is inserted into the middle plate 5.
A gap formed between the hole 52 and the outer peripheral surface of the drive shaft 4
53. A horizontal multi-cylinder compressor , which is provided so as to communicate with 53 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3139200A JP3060599B2 (en) | 1991-06-11 | 1991-06-11 | Horizontal multi-cylinder compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3139200A JP3060599B2 (en) | 1991-06-11 | 1991-06-11 | Horizontal multi-cylinder compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04365991A JPH04365991A (en) | 1992-12-17 |
| JP3060599B2 true JP3060599B2 (en) | 2000-07-10 |
Family
ID=15239890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3139200A Expired - Fee Related JP3060599B2 (en) | 1991-06-11 | 1991-06-11 | Horizontal multi-cylinder compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3060599B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3585661B2 (en) * | 1995-09-29 | 2004-11-04 | 松下冷機株式会社 | Rotary compressor and refrigeration apparatus equipped with the compressor |
| US7223082B2 (en) * | 2003-03-25 | 2007-05-29 | Sanyo Electric Co., Ltd. | Rotary compressor |
| CN104033359A (en) * | 2014-06-25 | 2014-09-10 | 珠海凌达压缩机有限公司 | Horizontal compressor |
-
1991
- 1991-06-11 JP JP3139200A patent/JP3060599B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04365991A (en) | 1992-12-17 |
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