JPH0237182A - Lubrication pump unit for compressor - Google Patents
Lubrication pump unit for compressorInfo
- Publication number
- JPH0237182A JPH0237182A JP18766188A JP18766188A JPH0237182A JP H0237182 A JPH0237182 A JP H0237182A JP 18766188 A JP18766188 A JP 18766188A JP 18766188 A JP18766188 A JP 18766188A JP H0237182 A JPH0237182 A JP H0237182A
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- oil
- vane
- eccentric groove
- drive shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005461 lubrication Methods 0.000 title abstract description 10
- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- 238000005192 partition Methods 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
- Compressor (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は主として冷凍装置に使用する圧縮機の給油ポン
プ装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates primarily to a refueling pump device for a compressor used in a refrigeration system.
(従来の技術)
一般に、圧縮機における圧縮要素の駆動軸への軸受箇所
などの給油箇所に油を給油する場合、特開昭82−25
3972号公報に見られ、第7図に示したごとく、遠心
ポンプが使用されている。(Prior Art) Generally, when oil is supplied to oil supply points such as bearings to drive shafts of compression elements in compressors, Japanese Patent Laid-Open No. 82-25
As seen in Japanese Patent No. 3972 and shown in FIG. 7, a centrifugal pump is used.
この遠心ポンプは、前記駆動軸(A)に、圧縮機におけ
るケーシング内底部の油溜め(B)に臨む一端から他端
側に向って延びる給油通路(C)を設けると共に、前記
駆動軸(A)の軸端部に逆円錐形の内面をもったポンプ
要素(P)を取付けて、前記駆動軸(A)の回転により
前記ポンプ要素(P)において生じる遠心力を利用して
油溜め(B)から油を汲上げ、前記給油通路(C)を介
して潤滑箇所に油を給油するごとく構成されている。This centrifugal pump is provided with an oil supply passage (C) extending from one end facing the oil reservoir (B) at the inner bottom of the casing of the compressor toward the other end on the drive shaft (A). A pump element (P) having an inverted conical inner surface is attached to the shaft end of the oil sump (B ), and the oil is supplied to the lubrication points via the oil supply passage (C).
(発明が解決しようとする課題)
所が、従来のごとく遠心ポンプを使用した場合、油溜め
から汲上げる汲上げ油量は、前記駆動軸の回転数の2乗
に比例して2次曲線的に増大することになるため、圧縮
機の高速運転時と、低速運転時とにおける給油量の差が
大きくて、高速運転時は、過剰給油となり、又、低速運
転時は、給油不足となる問題があった。(Problem to be Solved by the Invention) However, when a centrifugal pump is used as in the past, the amount of oil pumped up from the oil reservoir is proportional to the square of the rotation speed of the drive shaft and follows a quadratic curve. As a result, there is a large difference in the amount of lubrication between high-speed and low-speed operation of the compressor, resulting in excessive lubrication during high-speed operation and insufficient lubrication during low-speed operation. was there.
本発明は以上の問題点に鑑み発明したもので、目的は、
シリンダ室と、該シリンダ室を吸入室と吐出室とに仕切
るベーンを備えた定容積形のポンプ構造を採用すること
により、前記した問題を解決できながら、しかも、前記
シリンダ室のシールを簡単にでき、かつ小形にできると
共に、組付は性を良好にでき、更に、前記偏心溝とベー
ンとの位置関係が狂うのを確実に防ぐことができる給油
ポンプ装置を提供できるようにするものである。The present invention was invented in view of the above problems, and its purpose is to:
By adopting a constant displacement pump structure that includes a cylinder chamber and a vane that partitions the cylinder chamber into a suction chamber and a discharge chamber, the above-mentioned problems can be solved, and the cylinder chamber can be easily sealed. To provide an oil supply pump device which can be made compact and easy to assemble, and which can reliably prevent the positional relationship between the eccentric groove and the vane from becoming out of alignment. .
(課題を解決するための手段)
しかして、本発明は、圧縮要素(10)を駆動する駆動
軸(6)の軸内に形成した給油通路(61)に、油溜め
(1a)から油を汲上げる圧縮機の給油ポンプ装置であ
−っで、前記駆動軸(6)に套嵌する円筒形ロータ(2
0)と、該ロータ(20)の円筒外面(20b)に摺接
する円孔(41)をもつハウジング(4)とを備え、前
記円筒外面(20b)の中間胴部周りに、偏心溝(21
)を形成して、該偏心溝(21)と前記円孔(41)と
でシリンダ室(30)を形成すると共に、前記ハウジン
グ(4)に、前記偏心溝(21)に頂部を当接し、かつ
、前記シリンダ室(30)を吸入室(31)と吐出室(
32)とに仕切るベーン(33)を設け、前記吸入室(
31)を前記油溜め(1a)に、又、前記吐出室(32
)を前記給油通路(61)にそれぞれ連通させる一方、
前記ハウジング(4)における前記ベーン(33)の径
方向対向側に、前記偏心溝(21)に頂部を嵌合し、か
つ、前記吸入室(31)と吐出室(32)とを連通ずる
連通部(51)をもうた係止体(50)を設けたもので
ある。(Means for Solving the Problems) Accordingly, the present invention supplies oil from an oil reservoir (1a) to an oil supply passage (61) formed in the shaft of a drive shaft (6) that drives a compression element (10). A cylindrical rotor ( 2
0) and a housing (4) having a circular hole (41) in sliding contact with the cylindrical outer surface (20b) of the rotor (20), and an eccentric groove (21
), the eccentric groove (21) and the circular hole (41) form a cylinder chamber (30), and the top of the eccentric groove (21) abuts on the housing (4); And, the cylinder chamber (30) is divided into a suction chamber (31) and a discharge chamber (
A vane (33) is provided to partition the suction chamber (32) into the suction chamber (32).
31) into the oil reservoir (1a), and the discharge chamber (32).
) are communicated with the oil supply passageway (61), respectively;
A communication device is provided on the radially opposite side of the vane (33) in the housing (4), the top of which fits into the eccentric groove (21), and communicates the suction chamber (31) with the discharge chamber (32). A locking body (50) having a portion (51) is provided.
(作用)
定容積形のポンプ構造であるため、潤滑箇所に、駆動軸
(6)の回転数に対応した定量の油を給油することがで
きるのであって、駆動軸(6)の回転により、油溜め(
1a)の油をシリンダ室(30)の吸入室(31)に吸
入し、吐出室(32)から前記駆動軸(6)の給油通路
(61)を経て潤滑箇所に適正に給油できるのである。(Function) Since the pump has a fixed displacement type structure, it is possible to supply a fixed amount of oil to the lubricating location according to the rotation speed of the drive shaft (6), and by the rotation of the drive shaft (6), Oil sump (
The oil 1a) can be sucked into the suction chamber (31) of the cylinder chamber (30) and properly supplied to the lubricated points from the discharge chamber (32) through the oil supply passage (61) of the drive shaft (6).
又、ロータ0の円筒外面(20b)に偏心溝(21)を
設けてこの偏心溝(21)とハウジング(4)の円孔(
41)とでシリンダ室(30)を形成する構造としてい
るため、前記偏心溝(21)両側の円筒外面(20b)
と円孔(41)内面とを高精度に加工するだけで前記シ
リンダ室(30)をシールすることができ、従って、特
別のシール構造を採用しなくともシールを簡単に行うこ
とができると共に、ポンプ装置全体を小形化でき、又、
圧縮機への組付性も良好となるのである。又、偏心溝(
21)と円孔(41)との間でシリンダ室(30)を形
成したに拘らず、前記係止体(50)を設けたことによ
り前記駆動軸(6)の駆動により、前記偏心溝(21)
の最小深さ部がベーン(33)との対接位置に位置した
場合でも前記ロータ(20)の軸方向移動を阻止でき、
前記偏心溝(21)とベーン(33)との位置関係を確
実に保持できるのである。Further, an eccentric groove (21) is provided on the cylindrical outer surface (20b) of the rotor 0, and the eccentric groove (21) and the circular hole (20b) of the housing (4) are connected to each other.
41) to form the cylinder chamber (30), the cylindrical outer surface (20b) on both sides of the eccentric groove (21)
The cylinder chamber (30) can be sealed by simply machining the inner surface of the circular hole (41) with high precision, and therefore, the sealing can be easily performed without adopting a special sealing structure. The entire pump device can be downsized, and
This also makes it easier to assemble into the compressor. In addition, eccentric groove (
Although the cylinder chamber (30) is formed between the circular hole (41) and the circular hole (41), the provision of the locking body (50) allows the eccentric groove ( 21)
The rotor (20) can be prevented from moving in the axial direction even when the minimum depth portion of the rotor (20) is located in a position facing the vane (33);
The positional relationship between the eccentric groove (21) and the vane (33) can be maintained reliably.
(実施例)
図示した給油ポンプ装置は、横型開放圧縮機内に組み込
んだものであるがその他、密閉形圧縮機内に組み込んで
もよいのである。(Embodiment) Although the illustrated oil supply pump device is installed in a horizontal open compressor, it may also be installed in a closed type compressor.
図示した圧縮機は、一端を開放し、底部に油溜め(1a
)をもった横長ケーシング(1)内に、固定スクロール
(2)と架橋(3)及びこの架橋(3)の一端に取付け
る軸受ケース(3a)とを内装して、これら架橋(3)
の中心部と、軸受ケース(3a)の中心部とに一対の軸
受(5)(5)を介して駆動軸(6)を回転自由に支持
し、この駆動軸(8)の前記架橋(3)側端部に、中心
部に軸受(7)を保持した公転機構(8)と、この公転
機構(8)の前記軸受(5)に回転自由に支持する公転
スクロール(9)とから成る圧縮要素(10)を支持し
、前記駆動軸(6)の前記軸受ケース(3a)側端部を
前記ケーシング(1)の開放口から外方に突出させて、
この突出部に駆動輪(11)を取付けると共に、前記開
放口には前記駆動軸(6)とケーシング(1)の開放口
との間をシールするメカニカルシール(12)を設けて
いる。又、前記駆動軸(6)の中心部には、一端から他
端側に向って延びる給油通路(61)を設けている。The illustrated compressor has one end open and an oil sump (1a) at the bottom.
), a fixed scroll (2), a bridge (3), and a bearing case (3a) attached to one end of this bridge (3) are housed inside a horizontally elongated casing (1), and these bridges (3)
A drive shaft (6) is rotatably supported through a pair of bearings (5) (5) at the center of the bearing case (3a) and at the center of the bearing case (3a). ) side end, a compression mechanism consisting of a revolving mechanism (8) holding a bearing (7) in the center, and a revolving scroll (9) rotatably supported by the bearing (5) of this revolving mechanism (8). supporting the element (10) and causing the end of the drive shaft (6) on the bearing case (3a) side to protrude outward from the open opening of the casing (1);
A drive wheel (11) is attached to this protrusion, and the opening is provided with a mechanical seal (12) for sealing between the drive shaft (6) and the opening of the casing (1). Further, an oil supply passage (61) extending from one end toward the other end is provided in the center of the drive shaft (6).
しかして、図示した実施例では、前記駆動軸(6)にお
ける軸受(5)(5)への支持位置間外周に、中心部に
套嵌孔(20a)をもった円筒形ロータ(20)を套嵌
してキー(100)により相対回転不能に結合すると共
に、前記軸受ケース(3a)に、前記ロータ(20)の
円筒外面(20b)に摺接する円孔(41)をもったハ
ウジング(4)を設ける一方、前記ロータ(20)にお
ける前記円筒外面(20b)の中間胴部周りに、ロータ
(20)の中心線に対し偏位する偏心溝(21)を形成
して、該偏心溝(21)と前記円孔(41)とでシリン
ダ室(30)を形成すると共に、前記ハウジング(4)
に、前記偏心溝(21)の底面に頂部を当接し、かつ、
前記シリンダ室(30)を吸入室(31)と吐出室(3
2)とに仕切るベーン(33)を設け、前記吸入室(3
1)を前記油溜め(1a)に、又、前記吐出室(32)
を前記給油通路(61)にそれぞれ連通させる一方、前
記ハウジング(4)における前記ベーン(33)の径方
向対向側に、前記偏心溝(21)に頂部を嵌合し、かつ
、前記吸入室(31)と吐出室(32)とを連通ずる連
通部(51)をもった係止体(50)を設けたのである
。Therefore, in the illustrated embodiment, a cylindrical rotor (20) having a sleeve fitting hole (20a) in the center is provided on the outer periphery between the support positions for the bearings (5) (5) on the drive shaft (6). A housing (4) that is fitted onto the housing (4) and coupled to the key (100) so as not to rotate relative to each other, and that has a circular hole (41) in the bearing case (3a) that slides into contact with the cylindrical outer surface (20b) of the rotor (20). ), and an eccentric groove (21) that is offset with respect to the center line of the rotor (20) is formed around the middle body part of the cylindrical outer surface (20b) of the rotor (20). 21) and the circular hole (41) form a cylinder chamber (30), and the housing (4)
, the top portion is brought into contact with the bottom surface of the eccentric groove (21), and
The cylinder chamber (30) is divided into a suction chamber (31) and a discharge chamber (3).
A vane (33) is provided to partition the suction chamber (3) into
1) into the oil sump (1a), and into the discharge chamber (32).
are connected to the oil supply passageway (61), while a top portion of the housing (4) is fitted into the eccentric groove (21) on the side radially opposite to the vane (33), and the suction chamber ( 31) and the discharge chamber (32) are provided.
以上の構成において、前記偏心溝(21)は、第2図の
如(真円に形成して、その最小深さ部(21a)が前記
円孔(41)内周面と面一となるように形成して、この
最小深さ部(21a)と前記ベーン(33)との間に前
記吸入室(31)と吐出室(32)とが形成できるよう
にするのである。In the above configuration, the eccentric groove (21) is formed into a perfect circle as shown in FIG. The suction chamber (31) and the discharge chamber (32) can be formed between the minimum depth portion (21a) and the vane (33).
又、前記ベーン(33)は、前記偏心溝(21)の溝幅
と同径の有底筒状に形成して、その閉鎖側頂面を前記偏
心溝(21)の底面に当接させるのであって、このベー
ン(33)の内側頂面と、前記ハウジング(4)に設け
るばね受け(42)との間に゛ベーンばね(34)を設
けて、前記ベーン(33)を前記偏心溝(21)に圧接
している。Further, the vane (33) is formed into a bottomed cylindrical shape with the same diameter as the groove width of the eccentric groove (21), and the top surface of the closed side is brought into contact with the bottom surface of the eccentric groove (21). A vane spring (34) is provided between the inner top surface of the vane (33) and a spring receiver (42) provided in the housing (4), and the vane (33) is inserted into the eccentric groove ( 21).
又、前記ハウジング(4)には、前記ベーン(33)を
案内するガイド孔(43)と、前記係止体(50)を保
持する保持孔(44)とを180度の位相差で設け、前
記ガイド孔(43)に前記ベーン(33)を摺゛動自由
に内装し、又、前記保持孔(44)に前記係止体(5o
)を移動自由に保持している。尚、前記保持孔(44)
は、前記ガイド孔(43)に対し180度の位相差で設
ける他、180度以下の位相差で設けてもよいのであっ
て、要はガイド孔(43)に対し偏位した位置であれば
よい。Further, the housing (4) is provided with a guide hole (43) for guiding the vane (33) and a holding hole (44) for holding the locking body (50) with a phase difference of 180 degrees, The vane (33) is slidably installed in the guide hole (43), and the locking body (5o) is installed in the holding hole (44).
) is kept free to move. In addition, the holding hole (44)
may be provided with a phase difference of 180 degrees or less with respect to the guide hole (43); good.
前記係止体(50)は、前記ベーン(33)が偏心溝(
21)の最小深さ部(21a)に位置しているとき、前
記ロータ(20)が、前記駆動軸(6)の軸方向への許
容移動範囲内で該駆動軸(6)と共に軸方向に移動して
前記ベーン(33)と偏心溝(21)との位置関係が狂
うのを防ぐものであって、前記ベーン(33)と同様、
前記偏心溝(21)の溝幅と同径の存置筒状に形成して
、その閉鎖側頂面を前記偏心溝(21)の底面に当接さ
せている。そして、このベーン(33)の内側頂面と、
前記ハウジング(4)に設けるばね受ピン(45)との
間に押圧ばね(52)を設けて、前記係止体(50)を
前記偏心溝(21)に押圧している。又、前記係止体(
50)には、その閉鎖側頂面に凹溝を設けて、この凹溝
を前記連通部(51)とし、前記吸入室(31)内に吸
入した油を前記連通部(51)を介して流通可能として
いる。又、前記係止体(50)の開放端側には、前記ば
ね受ピン(45)を受入れる割溝(53)を設けて、こ
の割溝(53)と前記ばね受ピン(45)とにより前記
係止体(50)の回転を阻止し、前記連通部(51)の
位置が変らないようにしている。尚、前記係止体(50
)1′1、実施例の如(−個通路ける他、複数個設けて
もよい。The locking body (50) is configured such that the vane (33) has an eccentric groove (
21), the rotor (20) moves axially with the drive shaft (6) within the permissible axial movement range of the drive shaft (6). This prevents the vane (33) and the eccentric groove (21) from moving out of alignment, and similarly to the vane (33),
It is formed into a cylindrical shape with the same diameter as the groove width of the eccentric groove (21), and its closed side top surface is brought into contact with the bottom surface of the eccentric groove (21). And the inner top surface of this vane (33),
A pressing spring (52) is provided between the housing (4) and a spring receiving pin (45) to press the locking body (50) into the eccentric groove (21). Moreover, the locking body (
50) is provided with a groove on its top surface on the closed side, and this groove serves as the communication part (51), and the oil sucked into the suction chamber (31) is passed through the communication part (51). It is available for distribution. Further, a split groove (53) for receiving the spring receiving pin (45) is provided on the open end side of the locking body (50), and the split groove (53) and the spring receiving pin (45) Rotation of the locking body (50) is prevented to prevent the position of the communication portion (51) from changing. In addition, the locking body (50
) 1'1, as in the embodiment (-), or a plurality of passages may be provided.
又、前記ハウジング(4)における前記ガイド孔(43
)の両側部位には、前記吸入室(31)に開口する吸入
路(4B)と、前記吐出室(32)に開口する吐出路(
47)とを設けて、前記吸入路(46)を、前記油溜め
(1a)に開口する吸油口をもった給油管(13)に接
続しており、又、前記吐出路(47)は、ハウジング(
4)の軸方向に延びる長孔状に形成している。Further, the guide hole (43) in the housing (4)
) is provided with a suction passage (4B) opening into the suction chamber (31) and a discharge passage (4B) opening into the discharge chamber (32).
47) to connect the suction passage (46) to an oil supply pipe (13) having an oil suction port opening into the oil reservoir (1a), and the discharge passage (47) to housing(
4) is formed into a long hole shape extending in the axial direction.
そして、前記ロータ(20)の円筒外面(20b)に、
前記偏心溝(21)と軸方向に所定間隔を置いて前記吐
出路(47)と連通ずる環状溝(22)及びこの環状溝
(22)の一箇所から半径方向内方に延びて前記套嵌孔
(20a)に開口する連通路(23)を設けると共に、
前記駆動軸(6)に、前記給油通路(61)から半径方
向に延びて前記連通路(23)と連通ずる連通路(62
)を設けて、前記吐出室(32)の油を、前記給油通路
(61)に給油できるようにしている。And on the cylindrical outer surface (20b) of the rotor (20),
an annular groove (22) that communicates with the discharge passage (47) at a predetermined interval in the axial direction from the eccentric groove (21); A communicating path (23) that opens to the hole (20a) is provided, and
The drive shaft (6) has a communication passage (62) extending radially from the oil supply passage (61) and communicating with the communication passage (23).
) is provided so that the oil in the discharge chamber (32) can be supplied to the oil supply passage (61).
本発明は以上のごとく構成するもので、駆動軸(6)を
駆動することにより、ケーシング(1)底部における油
溜め(1a)の油が、給油管(13)、吸入路(48)
を経てシリンダ室(30)の吸入室(31)に吸い込ま
れ、前記駆動軸(6)の回転に伴い前記偏心溝(21)
の最小深さ部(21a)とベーン(33)との位置関係
が変って、前記吸入室(31)に吸入された油が、前記
吐出室(32)から吐出され、この吐出室(32)から
吐出路(47)、環状溝(22)、連通路(23)(8
2)を経て給油通路(61)に給油され、更に、この給
油通路(61)の開放口から前記圧縮要素(10)の軸
受部分に給油できるのである。The present invention is constructed as described above, and by driving the drive shaft (6), the oil in the oil reservoir (1a) at the bottom of the casing (1) is supplied to the oil supply pipe (13), the suction passage (48), and the like.
through the suction chamber (31) of the cylinder chamber (30), and as the drive shaft (6) rotates, the eccentric groove (21)
The positional relationship between the minimum depth part (21a) and the vane (33) changes, and the oil sucked into the suction chamber (31) is discharged from the discharge chamber (32). From the discharge passage (47), the annular groove (22), the communication passage (23) (8
2), the oil is supplied to the oil supply passage (61), and furthermore, the bearing portion of the compression element (10) can be supplied with oil from the open mouth of this oil supply passage (61).
又、前記駆動軸(6)の駆動時、前記偏心溝(21)の
最小深さ部(21a)がベーン(33)との対接位置に
位置した場合、前記ロータ(20)は、前記ベーン(3
3)に対し軸方向に移動可能な状態となるのであるが、
この場合、第5.6図の如く前記偏心溝(21)の最大
深さ部が、前記ベーン(33)との対向位置に設けた係
止体(50)との対接位置に位置することになるため、
ロータ(20)の軸方向への移動は、前記係止体(50
)で確実に防止できるのである。従って、偏心溝(21
)と円孔(41)との間にシリンダ室(30)を形成し
ても、前記ロータ(20)の軸方向への移動を確実に防
止でき、偏心溝(21)とベーン(33)との位置関係
を確実に保持できるのである。Further, when the drive shaft (6) is driven, if the minimum depth portion (21a) of the eccentric groove (21) is located in a position facing the vane (33), the rotor (20) (3
3), it becomes possible to move in the axial direction,
In this case, as shown in Fig. 5.6, the maximum depth of the eccentric groove (21) is located at a position facing the locking body (50) provided at a position opposite to the vane (33). In order to become
The movement of the rotor (20) in the axial direction is controlled by the locking body (50).
) can definitely prevent this. Therefore, the eccentric groove (21
) and the circular hole (41), the rotor (20) can be reliably prevented from moving in the axial direction, and the eccentric groove (21) and the vane (33) can be This allows the positional relationship between the two to be reliably maintained.
又、シリンダ室(30)と、該シリンダ室(30)を吸
入室(31)と吐出室(32)とに仕切るベーン(33
)とを備えた定容積形のポンプ構造であるため、潤滑箇
所に、駆動軸(6)の回転数に対応した定量の油を給油
することができるのであり、又、駆動軸(6)と一体回
転するロータ(20)の円筒外面(20b)に偏心溝(
21)を設けて、この偏心溝(21)と、前記円筒外面
(20b)に摺接するハウジング(4)の円孔(41)
との間にシリンダ室(30)を形成するのであるから、
前記ロータ(20)における偏心溝(21)の両側円筒
外面(20b)と前記円孔(41)内周面とを高精度に
加工するだけで、前記シリンダ室(30)をシールする
ことができるのである。即ち、前記円筒外面(20b)
と円孔(41)とは何れも切削加工で高精度の真円に形
成できるので、特別のシール構造を用いなくとも前記シ
リンダ室(30)をシールすることができるし、また、
装置全体を小形化できると共に、圧縮機への組付性を良
好にできるのである。Further, a cylinder chamber (30) and a vane (33) that partitions the cylinder chamber (30) into a suction chamber (31) and a discharge chamber (32) are provided.
), it is possible to supply a fixed amount of oil to the lubrication points corresponding to the rotation speed of the drive shaft (6). An eccentric groove (
21), and the eccentric groove (21) and the circular hole (41) of the housing (4) that is in sliding contact with the cylindrical outer surface (20b).
Since a cylinder chamber (30) is formed between
The cylinder chamber (30) can be sealed by simply machining the cylindrical outer surfaces (20b) on both sides of the eccentric groove (21) in the rotor (20) and the inner peripheral surface of the circular hole (41) with high precision. It is. That is, the cylindrical outer surface (20b)
Both the circular hole (41) and the circular hole (41) can be formed into a highly accurate perfect circle by cutting, so the cylinder chamber (30) can be sealed without using a special sealing structure.
The entire device can be made smaller and can be easily assembled into a compressor.
(発明の効果)
以上のごとく本発明は、シリンダ室(30)と、該シリ
ンダ室(30)を吸入室(31)と吐出室(32)とに
仕切るベーン(33)とを備えた定容積形のポンプ構造
を採用しているため、潤滑箇所に、駆動軸(6)の回転
数に対応した定量の油を給油することができるのであり
、しかも、ロータ(20)の円筒外面(20b)に偏心
溝(21)を設けて、この偏心溝(21)とノ1ウジン
グ(4)の円孔(41)とでシリンダ室(30)を形成
しているため、前記偏心溝(21)両側の円筒外面(2
0b)と前記円孔(41)内周面とを高精度に加工する
だけで前記シリンダ室(30)をシールすることができ
、従って、そのシール構造を簡単にできると共に、円筒
形ロータ(20)に偏心溝(21)を設ける構造として
いるから全体として小形にできるし、また、圧縮機への
組付性も良好となるのである。その上、連通部(51)
をもった係止体(50)を前記ベーン(33)とは別に
設けて、前記偏心溝(21)の最小深さ部が前記ベーン
(33)との対接位置に位置した場合における前記ロー
タ(20)の軸方向移動を阻止するようにしているため
、前記偏心J(21)とベーン(33)との位置関係を
確実に保持でき、確実に給油できるのである。(Effects of the Invention) As described above, the present invention has a constant volume that includes a cylinder chamber (30) and a vane (33) that partitions the cylinder chamber (30) into a suction chamber (31) and a discharge chamber (32). Since it adopts a shaped pump structure, it is possible to supply a certain amount of oil to the lubrication points corresponding to the rotational speed of the drive shaft (6), and it is also possible to supply a certain amount of oil to the lubrication points corresponding to the rotation speed of the drive shaft (6). Since the eccentric groove (21) and the circular hole (41) of the no. 1 housing (4) form the cylinder chamber (30), both sides of the eccentric groove (21) The outer surface of the cylinder (2
0b) and the inner peripheral surface of the circular hole (41) with high precision, the cylinder chamber (30) can be sealed. Therefore, the sealing structure can be simplified, and the cylindrical rotor (20 ), the eccentric groove (21) is provided, so the overall size can be made smaller, and the assembly into the compressor is also easier. Moreover, the communication part (51)
The rotor in the case where a locking body (50) having a locking body (50) is provided separately from the vane (33), and the minimum depth part of the eccentric groove (21) is located at a position facing the vane (33). (20) is prevented from moving in the axial direction, the positional relationship between the eccentric J (21) and the vane (33) can be maintained reliably, and oil can be reliably supplied.
第1図は本発明ポンプHWlの一部切欠断面図、第2図
は要部のみの断面図、第3図はハウジングにおける円孔
部分のみの断面図、第4図はロータとベーンとの関係を
示す斜視図、第5図は第2図に対応した作動杖態の説明
図、第6図は第5図中央縦断断面図、第7図は従来例の
説明図である。
(1a)・・・・油溜め
(4)・・・・ハウジング
(41)・・・・円孔
(5)・・・・軸受
(6)・・・・駆動軸
(61)・・・・給油通路
(20)・・・・ロータ
(20a)・・・・套嵌孔
(20b)・・・・円筒外面
(21)・・・・偏心溝
(30)・・・・シリンダ室
(31)・・・・吸入室
(32)・・・・吐出室
(33)・・・・ベーン
(10)・・・・圧縮要素
(50)・・・・係止体
(51)・・・・連通部
0bFig. 1 is a partially cutaway sectional view of the pump HWl of the present invention, Fig. 2 is a sectional view of only the main parts, Fig. 3 is a sectional view of only the circular hole in the housing, and Fig. 4 is the relationship between the rotor and vanes. FIG. 5 is an explanatory diagram of an operating cane state corresponding to FIG. 2, FIG. 6 is a longitudinal sectional view at the center of FIG. 5, and FIG. 7 is an explanatory diagram of a conventional example. (1a)... Oil reservoir (4)... Housing (41)... Circular hole (5)... Bearing (6)... Drive shaft (61)... Oil supply passage (20)... Rotor (20a)... Mantle fitting hole (20b)... Cylindrical outer surface (21)... Eccentric groove (30)... Cylinder chamber (31) ... Suction chamber (32) ... Discharge chamber (33) ... Vane (10) ... Compression element (50) ... Locking body (51) ... Communication Part 0b
Claims (1)
形成した給油通路(61)に、油溜め(1a)から油を
汲上げる圧縮機の給油ポンプ装置であって、前記駆動軸
(6)に套嵌する円筒形ロータ(20)と、該ロータ(
20)の円筒外面(20b)に摺接する円孔(41)を
もつハウジング(4)とを備え、前記円筒外面(20b
)の中間胴部周りに、偏心溝(21)を形成して、該偏
心溝(21)と前記円孔(41)とでシリンダ室(30
)を形成すると共に、前記ハウジング(4)に、前記偏
心溝(21)に頂部を当接し、かつ、前記シリンダ室(
30)を吸入室(31)と吐出室(32)とに仕切るベ
ーン(33)を設け、前記吸入室(31)を前記油溜め
(1a)に、又、前記吐出室(32)を前記給油通路(
61)にそれぞれ連通させる一方、前記ハウジング(4
)における前記ベーン(33)の径方向対向側に、前記
偏心溝(21)に頂部を嵌合し、かつ、前記吸入室(3
1)と吐出室(32)とを連通する連通部(51)をも
つた係止体(50)を設けたことを特徴とする圧縮機の
給油ポンプ装置。1) An oil supply pump device for a compressor that pumps oil from an oil reservoir (1a) into an oil supply passage (61) formed in the shaft of a drive shaft (6) that drives a compression element (10), the drive a cylindrical rotor (20) that fits over the shaft (6);
a housing (4) having a circular hole (41) in sliding contact with the cylindrical outer surface (20b) of the cylindrical outer surface (20b);
), an eccentric groove (21) is formed around the middle body of the cylinder chamber (30), and the eccentric groove (21) and the circular hole (41)
), the housing (4) has its top abutted on the eccentric groove (21), and the cylinder chamber (
30) into a suction chamber (31) and a discharge chamber (32), the suction chamber (31) is used as the oil reservoir (1a), and the discharge chamber (32) is used as the oil supply chamber. aisle(
61), while the housing (4
), the top part of which fits into the eccentric groove (21) on the radially opposite side of the vane (33), and the suction chamber (3
1) and a discharge chamber (32).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63187661A JPH0646034B2 (en) | 1988-07-27 | 1988-07-27 | Refueling pump device for compressor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63187661A JPH0646034B2 (en) | 1988-07-27 | 1988-07-27 | Refueling pump device for compressor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0237182A true JPH0237182A (en) | 1990-02-07 |
JPH0646034B2 JPH0646034B2 (en) | 1994-06-15 |
Family
ID=16209969
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63187661A Expired - Fee Related JPH0646034B2 (en) | 1988-07-27 | 1988-07-27 | Refueling pump device for compressor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0646034B2 (en) |
-
1988
- 1988-07-27 JP JP63187661A patent/JPH0646034B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0646034B2 (en) | 1994-06-15 |
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