JP2543275B2 - Horizontal scroll compressor - Google Patents
Horizontal scroll compressorInfo
- Publication number
- JP2543275B2 JP2543275B2 JP3200701A JP20070191A JP2543275B2 JP 2543275 B2 JP2543275 B2 JP 2543275B2 JP 3200701 A JP3200701 A JP 3200701A JP 20070191 A JP20070191 A JP 20070191A JP 2543275 B2 JP2543275 B2 JP 2543275B2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- fixed scroll
- end plate
- scroll
- oil supply
- 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
Landscapes
- Rotary Pumps (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は冷凍、空調用冷媒圧縮機
あるいは空気圧縮機として使用される横形スクロール圧
縮機に係り、特に旋回スクロールと固定スクロールの摺
動面への給油構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horizontal scroll compressor used as a refrigerating or air-conditioning refrigerant compressor or an air compressor, and more particularly to an oil supply structure for sliding surfaces of an orbiting scroll and a fixed scroll.
【0002】[0002]
【従来の技術】空調用冷媒圧縮機としてのスクロール圧
縮機は、密閉容器内に旋回スクロールと噛み合った固定
スクロールを該密閉容器に対して固定し、旋回スクロー
ルを該密閉容器内に設置した電動機に結合した駆動軸で
駆動する様になっており、縦形のものと横形のものがあ
る。2. Description of the Related Art A scroll compressor as a refrigerant compressor for an air conditioner is an electric motor in which a fixed scroll meshing with an orbiting scroll is fixed in the closed container and the orbiting scroll is installed in the closed container. It is designed to be driven by a combined drive shaft, and there are vertical type and horizontal type.
【0003】従来、縦形スクロール圧縮機における旋回
スクロールと固定スクロールの鏡板摺動面への給油方式
は、特公昭59−141794に記載されているよう
に、固定スクロール外周部と密閉容器の間の吐出室内に
て固定スクロール外周部上部に油溜りを形成し、固定ス
クロール内に、一端は該油溜りに開口し他端は旋回スク
ロールと固定スクロールの鏡板摺動面に開口している給
油穴を設け、高圧部(吐出室)と低圧部(上記摺動面)
との差圧を利用して上記油溜りの潤滑油を該給油穴を通
って直接旋回スクロールと固定スクロールの鏡板摺動面
に供給する構造であった。Conventionally, as described in Japanese Patent Publication No. Sho 59-141794, the oil supply system for the end plate sliding surfaces of the orbiting scroll and the fixed scroll in the vertical scroll compressor is such that the discharge between the outer peripheral portion of the fixed scroll and the closed container is performed. An oil sump is formed in the upper part of the outer periphery of the fixed scroll in the room, and an oil supply hole is formed in the fixed scroll, one end of which opens to the oil sump and the other end of which opens to the orbiting scroll and the end plate sliding surface of the fixed scroll. , High pressure part (discharge chamber) and low pressure part (above sliding surface)
The lubricating oil in the oil sump is directly supplied to the end plate sliding surfaces of the orbiting scroll and the fixed scroll by utilizing the differential pressure between
【0004】これに対して従来、横形スクロール圧縮機
における旋回スクロールと固定スクロールの鏡板摺動面
への給油方式は、特公昭61−87994に記載されて
いるように、高圧部と低圧部の差圧を利用して密閉容器
内下部の油溜りの潤滑油を給油パイプより駆動軸外周の
主軸受又は駆動軸内の給油穴を経て旋回スクロール背面
の背圧室に導き、そこで油滴となった潤滑油を旋回スク
ロールの回転運動により旋回スクロールと固定スクロー
ルの鏡板摺動面に跳ねかける方式を採用していた。On the other hand, the conventional oil supply system for the end plate sliding surfaces of the orbiting scroll and the fixed scroll in the horizontal scroll compressor is, as described in JP-B-61-87994, a difference between the high pressure portion and the low pressure portion. Using pressure, the lubricating oil in the oil reservoir in the lower part of the closed container is guided from the oil supply pipe to the back pressure chamber on the back of the orbiting scroll through the main bearing on the outer circumference of the drive shaft or the oil supply hole in the drive shaft, and becomes oil droplets there. A method has been adopted in which the lubricating oil is splashed on the sliding surfaces of the orbiting scroll and the fixed scroll by the rotating motion of the orbiting scroll.
【0005】[0005]
【発明が解決しようとする課題】しかしながら上記従来
の横形スクロール圧縮機の給油方式は潤滑油を直接上記
摺動面に供給するのではなく、一旦ガスと接触させてか
ら上記摺動面に供給する方式であるので、潤滑油にガス
が混入しており、油切れ(給油不足)を起こして上記摺
動面の摩耗、かじりが発生することがあった。However, in the conventional lubrication system for a horizontal scroll compressor, the lubricating oil is not directly supplied to the sliding surface but is first contacted with gas and then supplied to the sliding surface. Since this is a system, the lubricating oil contains gas, which may cause oil shortage (insufficient oil supply), resulting in wear and galling of the sliding surface.
【0006】本発明の目的は横形スクロール圧縮機にお
いて、固定スクロール鏡板と旋回スクロール鏡板とが摺
動する面に直接確実に給油を行うことにある。An object of the present invention is to reliably and directly supply oil to the surface of a horizontal scroll compressor on which the fixed scroll end plate and the orbiting scroll end plate slide.
【0007】[0007]
【課題を解決するための手段】上記目的の達成のため、
本発明は特許請求の範囲の各請求項に夫々記載の構成を
採用した。[Means for Solving the Problems] To achieve the above object,
The present invention employs the configurations described in each of the claims.
【0008】[0008]
【作用】密閉容器内の底部油溜りには吐出圧縮ガス圧力
(吐出室側においてもモータ室側においても)が作用し
ており、これに比べて固定、旋回両スクロールの鏡板外
周部摺動面に作用するガス圧力は低い。従って該油溜り
の油は、それに1端が通じている給油通路を通って、固
定スクロールの鏡板外周部摺動面に開口する該給油通路
の他端から、該摺動面に確実に直接給油され、この給油
にはガスが途中で混入することはなく、安定した給油が
可能となる。Operation: The discharge compressed gas pressure (both on the discharge chamber side and the motor chamber side) acts on the bottom oil sump in the closed container. The gas pressure acting on is low. Therefore, the oil in the oil sump passes through the oil supply passage having one end communicating therewith, and from the other end of the oil supply passage opened to the end plate outer peripheral sliding surface of the fixed scroll, the oil is surely directly supplied to the sliding surface. As a result, gas is not mixed in this refueling on the way, and stable refueling is possible.
【0009】[0009]
【実施例】図1は本発明による横形冷媒スクロール圧縮
機の1実施例の全体構造を示す断面図である。密閉容器
1内にはスクロール圧縮機構2とこれを駆動する電動機
3とが水平に配置されて収納されている。密閉容器1の
内部下方の油溜りは、フレーム11とこれに一体化され
た固定スクロール4によりモータ室1b側の油溜り6b
と吐出室1a側の油溜り6aとに二分されている。FIG. 1 is a sectional view showing the overall structure of one embodiment of a horizontal refrigerant scroll compressor according to the present invention. In the closed container 1, a scroll compression mechanism 2 and an electric motor 3 for driving the scroll compression mechanism 2 are horizontally arranged and housed. An oil sump 6b on the motor chamber 1b side is formed by the frame 11 and a fixed scroll 4 integrated with the frame 11 in the oil sump 6b inside the closed container 1.
And the oil reservoir 6a on the side of the discharge chamber 1a.
【0010】スクロール圧縮機構2は、鏡板5aに直立
した渦巻き状のラップ5bを有する旋回スクロール5
と、同じく鏡板4aに直立した渦巻き状のラップ4bを
有する固定スクロール4と、固定スクロール4と一体化
されて密閉容器1に固定され旋回スクロール5を支持す
るフレーム11とを具え、旋回スクロール5のラップ5
bと固定スクロール4のラップ4bを噛合せた構成とな
っている。The scroll compression mechanism 2 includes an orbiting scroll 5 having an end plate 5a and a spiral wrap 5b.
And a fixed scroll 4 having a spiral wrap 4b that is also upright on the end plate 4a, and a frame 11 that is integrated with the fixed scroll 4 and fixed to the closed container 1 to support the orbiting scroll 5. Wrap 5
b and the wrap 4b of the fixed scroll 4 are engaged with each other.
【0011】旋回スクロール5とフレーム11との間に
は、旋回スクロール5の自転を防止するオルダム機構1
2が設けられており、電動機3は駆動軸14,その先端
のクランクピン14a,それに軸受嵌合した旋回スクロ
ールの軸受ボス部5cを介して旋回スクロール5を旋回
運動させるようになっている。駆動軸14はフレーム1
1内に配置された主軸受(本例では転がり軸受)37、
シール軸受36及びモータ側軸受38により支持され、
そのクランクピン14aは旋回スクロール5の背面に設
けられたボス部5c内の旋回軸受35と嵌合されてい
る。Between the orbiting scroll 5 and the frame 11, the Oldham mechanism 1 for preventing the orbiting scroll 5 from rotating.
2 is provided, and the electric motor 3 is adapted to orbit the orbiting scroll 5 via the drive shaft 14, the crank pin 14a at the tip thereof, and the bearing boss portion 5c of the orbiting scroll fitted in the bearing thereof. Drive shaft 14 is frame 1
Main bearings (rolling bearings in this example) 37 arranged in 1;
Supported by the seal bearing 36 and the motor side bearing 38,
The crank pin 14a is fitted with the orbiting bearing 35 in the boss portion 5c provided on the back surface of the orbiting scroll 5.
【0012】フレーム11の延長部である上記軸受配置
用の軸受ハウジング32の下部には、モータ室1b側の
油溜り6b内に下端が開口する給油管30が設けられ、
その上端は上記軸受ハウジング32内の油溜め33内に
連通している。駆動軸14内には一端が前記油溜め33
に開口し、他端が旋回スクロール軸受ボス5c内に開口
する差圧給油通路34が設けてある。At a lower portion of the bearing housing 32 for arranging the bearing, which is an extension of the frame 11, an oil supply pipe 30 having a lower end opened in an oil sump 6b on the motor chamber 1b side is provided.
The upper end thereof communicates with the oil sump 33 in the bearing housing 32. One end of the drive shaft 14 is provided with the oil sump 33.
A differential pressure oil supply passage 34, which is open to the other side and whose other end opens into the orbiting scroll bearing boss 5c, is provided.
【0013】また、固定スクロール4の鏡板4a内に
は、旋回スクロール5の鏡板5aの外周部と固定スクロ
ール4の鏡板4aの外周部とが摺動する面41に開口し
ている給油通路8cに通じる給油通路8aが設けられて
いる。該給油通路8aは、フレーム11を貫通しモータ
室1b側の油溜り6bに開口している給油通路8bに連
通している。図2は上記給油通路8a,8b,8cの配
置関係を示す部分拡大図であり、図3は固定スクロール
鏡板内における該給油通路の配置を示した図である。Further, in the end plate 4a of the fixed scroll 4, an oil supply passage 8c opened to a surface 41 on which the outer peripheral part of the end plate 5a of the orbiting scroll 5 and the outer peripheral part of the end plate 4a of the fixed scroll 4 slide. An oil supply passage 8a that communicates is provided. The oil supply passage 8a communicates with an oil supply passage 8b penetrating the frame 11 and opening to the oil sump 6b on the motor chamber 1b side. FIG. 2 is a partially enlarged view showing the arrangement relationship of the oil supply passages 8a, 8b, 8c, and FIG. 3 is a view showing the arrangement of the oil supply passages in the fixed scroll end plate.
【0014】電動機3により駆動軸14及びクランクピ
ン14aを介して旋回スクロール5が旋回運動すると、
旋回スクロール5と固定スクロール4により形成される
複数の圧縮室9がスクロール中心方向に移動しながら容
積を減少し、吸入管17から吸入した冷媒ガスを圧縮す
る。圧縮されたガスは、固定スクロール4の鏡板4aの
中央吐出孔10から吐出室1aに吐出され、固定スクロ
ール4の鏡板4aおよびフレーム11の外周部に形成さ
れた通路18a、18bを通ってモータ室1bに入り、
電動機3を冷却した後、吐出管19より吐出される。When the orbiting scroll 5 orbits by the electric motor 3 via the drive shaft 14 and the crank pin 14a,
A plurality of compression chambers 9 formed by the orbiting scroll 5 and the fixed scroll 4 reduce the volume while moving in the scroll center direction, and compress the refrigerant gas sucked from the suction pipe 17. The compressed gas is discharged into the discharge chamber 1a from the central discharge hole 10 of the end plate 4a of the fixed scroll 4, passes through the end plate 4a of the fixed scroll 4 and the passages 18a and 18b formed in the outer peripheral portion of the frame 11, and the motor chamber is discharged. Enter 1b,
After cooling the electric motor 3, it is discharged from the discharge pipe 19.
【0015】両スクロールが圧縮作用を行うと、旋回ス
クロール5と固定スクロール4により形成される複数の
圧縮室9内のガス圧によるスラスト方向のガス力が、旋
回スクロール5と固定スクロール4を引き離そうとする
ので、これを防止するために、旋回スクロール5の背面
とフレーム11で囲まれた背圧室20に旋回スクロール
鏡板5aに設けられた細孔5dを介して圧縮途中のガス
を導き、旋回スクロール5の背面に該ガスを作用させ
る。上記背圧室20内の圧力は冷媒ガスの吸入圧力と吐
出圧力の中間である。When both scrolls perform a compression action, the gas force in the thrust direction due to the gas pressure in the plurality of compression chambers 9 formed by the orbiting scroll 5 and the fixed scroll 4 tends to separate the orbiting scroll 5 and the fixed scroll 4. Therefore, in order to prevent this, the gas in the middle of compression is guided to the back pressure chamber 20 surrounded by the back surface of the orbiting scroll 5 and the frame 11 through the pores 5d provided in the orbiting scroll end plate 5a, and the orbiting scroll is rotated. The gas is made to act on the back surface of 5. The pressure in the back pressure chamber 20 is between the suction pressure and the discharge pressure of the refrigerant gas.
【0016】モータ室1b側の油溜り6bの潤滑油は、
吐出圧力と上記背圧室20内の圧力との差により、給油
パイプ30、軸受ハウジング32内の油溜め33及び駆
動軸14内の給油通路34を経て軸受ボス5c内の旋回
軸受35を潤滑した後、背圧室20に導かれる。さら
に、油溜め33の潤滑油の一部は上記差圧により、シー
ル軸受36及び主軸受37を通り、背圧室20に導かれ
る。モータ側軸受38への給油は油溜め33の潤滑油を
駆動軸14外周部の粘性ポンプ31で加圧することによ
り行われる。背圧室20に導かれた前記潤滑油は細孔5
dを経て圧縮室9に入り、冷媒ガスと共に吐出室1aに
吐出され、一部は密閉容器内の吐出室1aの下部の油溜
り6aに、また一部は前記通路18a,18bを経てモ
ータ室1b内の油溜り6bに戻る。The lubricating oil in the oil sump 6b on the motor chamber 1b side is
Due to the difference between the discharge pressure and the pressure in the back pressure chamber 20, the orbiting bearing 35 in the bearing boss 5c is lubricated through the oil supply pipe 30, the oil sump 33 in the bearing housing 32 and the oil supply passage 34 in the drive shaft 14. After that, it is guided to the back pressure chamber 20. Further, part of the lubricating oil in the oil sump 33 is guided to the back pressure chamber 20 through the seal bearing 36 and the main bearing 37 due to the above-mentioned differential pressure. Oil supply to the motor side bearing 38 is performed by pressurizing the lubricating oil in the oil sump 33 with the viscous pump 31 on the outer peripheral portion of the drive shaft 14. The lubricating oil introduced into the back pressure chamber 20 has pores 5
After passing through d, it enters the compression chamber 9 and is discharged together with the refrigerant gas into the discharge chamber 1a, partly in the oil reservoir 6a below the discharge chamber 1a in the closed container, and partly through the passages 18a, 18b in the motor chamber. Return to the oil sump 6b in 1b.
【0017】一方、旋回スクロール5と固定スクロール
4との摺動面441への給油は、背圧室20内で油滴と
なった潤滑油を旋回スクロール5の旋回による跳ねかけ
によって行われるが、それ以外にさらに、フレーム11
の外周部に形成された通路8bからモータ室1bの油溜
り6bの潤滑油が固定スクロール鏡板4a内に設けた給
油通路8a,8cを通って、直接、摺動面41に供給さ
れる。On the other hand, the sliding surface 441 of the orbiting scroll 5 and the fixed scroll 4 is supplied with oil by lubricating the oil which has become an oil drop in the back pressure chamber 20 by splashing the orbiting scroll 5 by the orbit. Besides that, the frame 11
Lubricating oil in the oil sump 6b of the motor chamber 1b is directly supplied to the sliding surface 41 from oil passages 8a and 8c provided in the fixed scroll end plate 4a from a passage 8b formed in the outer peripheral portion of the motor.
【0018】摺動面41への直接給油通路の他の例を図
4〜図8に示す。図4および図5に示す1実施例におい
ては、モータ室1b側の油溜り6bと吐出室1a側の油
溜り6aとを、フレーム11の外周部および固定スクロ
ール4の外周部に設けた溝と密閉容器1の内面とで形成
された通路8dにより、連絡し、この通路8dに給油通
路8aを連通させたものである。図6に示す例では、フ
レーム11の外周部に設けた溝と密閉容器1の内面とで
形成される通路8fをモータ室1b側の油溜り6bに連
通させ、この通路8fに給油通路8aを連通させたもの
である。図7においては、吐出室1a側に油溜り6aよ
り、固定スクロール外周部の溝8gおよび固定スクロー
ル鏡板内に設けた給油通路8a,8cを介して、直接、
摺動面41に潤滑油が供給される。図8においては、密
閉容器内の吐出室1aの下部の油溜り6a中に固定スク
ロール外部に設けた配管8kの下端を開口させ、この配
管8kを介して油溜り6aから固定スクロール鏡板内に
設けた給油通路8cを通って直接、摺動面41に潤滑油
が供給される。配管8kの下端はモータ室1b側の油溜
り6b中に開口させてもよい。Another example of the direct oil supply passage to the sliding surface 41 is shown in FIGS. In the embodiment shown in FIGS. 4 and 5, the oil sump 6b on the motor chamber 1b side and the oil sump 6a on the discharge chamber 1a side are provided with grooves provided on the outer peripheral portion of the frame 11 and the outer peripheral portion of the fixed scroll 4, respectively. A passage 8d formed by the inner surface of the closed container 1 communicates with the oil passage 8a to communicate with the passage 8d. In the example shown in FIG. 6, the passage 8f formed by the groove provided on the outer peripheral portion of the frame 11 and the inner surface of the closed container 1 is communicated with the oil sump 6b on the motor chamber 1b side, and the oil supply passage 8a is connected to the passage 8f. It is a communication. In FIG. 7, from the oil sump 6a to the discharge chamber 1a side, directly through the groove 8g of the fixed scroll outer peripheral portion and the oil supply passages 8a and 8c provided in the fixed scroll end plate,
Lubricating oil is supplied to the sliding surface 41. In FIG. 8, the lower end of the pipe 8k provided outside the fixed scroll is opened in the oil sump 6a below the discharge chamber 1a in the closed container, and the oil sump 6a is provided in the fixed scroll end plate through this pipe 8k. The lubricating oil is directly supplied to the sliding surface 41 through the oil supply passage 8c. The lower end of the pipe 8k may be opened in the oil sump 6b on the motor chamber 1b side.
【0019】図9は固定スクロール4の鏡板外周部と旋
回スクロール5の鏡板外周部との摺動面41付近の拡大
断面図である。摺動面41に開口する給油通路8cより
摺動面41に潤滑油が供給されるのであるが、給油通路
8cは常に旋回スクロール5の鏡板5aによって密封さ
れていなければならない。そのためには、旋回スクロー
ル5の鏡板5a外周縁と固定スクロール4のラップ4b
のインボリュートの基礎円の中心Cとの距離の最小値を
L、給油通路8cと固定スクロールの該インボリュート
の基礎円の中心Cとの距離をL1 とし、L−L1 =l1
とした場合に、O<l1 の関係が成立しなければならな
い。又、両スクロール間にて外周部側に形成される吸入
室56の圧力Psは吸入圧力であり、背圧室20の圧力
Pbは中間圧力、給油通路8cの圧力Pdは吐出圧力と
なっているので、背圧室20から吸入室56へのガス洩
れを防止する為には、固定スクロール4の歯底部最外壁
4cと固定スクロール4のインボリュートの基礎円の中
心Cとの距離をL2 とし、L1 −L2 =l2 とした場合
に、l1 <l2 とすることが好ましい。FIG. 9 is an enlarged sectional view of the vicinity of the sliding surface 41 between the outer peripheral portion of the fixed scroll 4 and the outer peripheral portion of the orbiting scroll 5. Lubricating oil is supplied to the sliding surface 41 from the oil supply passage 8c that opens in the sliding surface 41, but the oil supply passage 8c must always be sealed by the end plate 5a of the orbiting scroll 5. For that purpose, the end plate 5a of the orbiting scroll 5 and the wrap 4b of the fixed scroll 4 are
Let L be the minimum value of the distance from the center C of the basic circle of the involute, and L 1 be the distance between the oil supply passage 8c and the center C of the basic circle of the involute of the fixed scroll, and L−L 1 = l 1
Then, the relationship of O <l 1 must be established. The pressure Ps of the suction chamber 56 formed on the outer peripheral side between the scrolls is the suction pressure, the pressure Pb of the back pressure chamber 20 is the intermediate pressure, and the pressure Pd of the oil supply passage 8c is the discharge pressure. Therefore, in order to prevent gas leakage from the back pressure chamber 20 to the suction chamber 56, the distance between the outermost tooth bottom wall 4c of the fixed scroll 4 and the center C of the involute base circle of the fixed scroll 4 is set to L 2 , When L 1 -L 2 = l 2 , it is preferable that l 1 <l 2 .
【0020】図10は給油通路の更に他の実施例を示す
部分拡大図であり、モータ室1b側の油溜り6bの潤滑
油はフレーム11内の給油通路8b、絞り機構60を介
して、固定スクロール4内の給油通路8aを通り、摺動
面41に開口する給油通路8cより摺動面41に供給さ
れる。絞り機構60を入れたことにより摺動面41への
給油量を調整することができ、最適給油量を決定でき
る。FIG. 10 is a partially enlarged view showing still another embodiment of the oil supply passage. Lubricating oil in the oil sump 6b on the motor chamber 1b side is fixed via the oil supply passage 8b in the frame 11 and the throttle mechanism 60. It is supplied to the sliding surface 41 through an oil supply passage 8c in the scroll 4 and an opening in the sliding surface 41. By inserting the throttle mechanism 60, the amount of oil supplied to the sliding surface 41 can be adjusted, and the optimum amount of oil supplied can be determined.
【0021】図11は給油通路の更に別の実施例を示す
部分拡大図であり、モータ室1b側の油溜り6bの潤滑
油は、フレーム11の外周に設けた溝状給油通路8Pお
よび固定スクロール4の外周部に設けた溝状の給油通路
8Q,そこから固定スクロール鏡板内に真直ぐに穿った
給油通路8a,更に、摺動面41へ向う給油通路8cを
通って摺動面41に直接供給される。本実施例において
は、固定スクロール内の給油通路8aの加工は非常に容
易であり、加工数も抑えることができる。FIG. 11 is a partially enlarged view showing still another embodiment of the oil supply passage. The lubricating oil in the oil sump 6b on the motor chamber 1b side is a groove-shaped oil supply passage 8P provided on the outer periphery of the frame 11 and a fixed scroll. 4, a groove-shaped oil supply passage 8Q provided in the outer peripheral portion, an oil supply passage 8a straightly drilled in the fixed scroll end plate from the grooved oil supply passage 8Q, and further supplied to the sliding surface 41 through the oil supply passage 8c facing the sliding surface 41. To be done. In this embodiment, the oil supply passage 8a in the fixed scroll is very easily machined, and the number of machining can be reduced.
【0022】図12は旋回スクロール5をラップ側から
見た図である。旋回スクロールの鏡板外縁部には周方向
に給油溝61が設けてあり、固定スクロール4の前記給
油通路8cより供給された潤滑油は給油溝61により摺
動面41に均一に供給される。なお、この様な潤滑油均
一化用の周方向溝61は固定スクロールの鏡板摺動面に
設けてもよい。FIG. 12 is a view of the orbiting scroll 5 viewed from the lap side. An oil supply groove 61 is provided in the outer peripheral portion of the end plate of the orbiting scroll in the circumferential direction, and the lubricating oil supplied from the oil supply passage 8c of the fixed scroll 4 is uniformly supplied to the sliding surface 41 by the oil supply groove 61. The circumferential groove 61 for uniformizing the lubricating oil may be provided on the sliding surface of the end plate of the fixed scroll.
【0023】[0023]
【発明の効果】以上説明したように本発明によれば、密
閉容器内下部の油溜りの潤滑油を、直接、固定スクロー
ル鏡板外周部と旋回スクロール鏡板外周部との摺動面
に、ガスの混入なしに、安定して確実に給油することが
でき、上記摺動面の摩耗、かじりを防止し、圧縮機の信
頼性を高めることができる。又、上記摺動面の潤滑状態
が良好となるので摺動損失を低減でき、圧縮機の性能を
上げることができる。As described above, according to the present invention, the lubricating oil in the oil sump in the lower portion of the closed container is directly supplied to the sliding surface between the outer peripheral portion of the fixed scroll end plate and the outer peripheral portion of the orbiting scroll end plate. Stable and reliable oil supply can be achieved without mixing, wear and galling of the sliding surface can be prevented, and the reliability of the compressor can be improved. Further, since the lubricating condition of the sliding surface is improved, sliding loss can be reduced and the performance of the compressor can be improved.
【図1】 本発明の横形スクロール圧縮機の1実施例の
断面図。FIG. 1 is a sectional view of one embodiment of a horizontal scroll compressor of the present invention.
【図2】 同実施例の給油通路の部分拡大断面図。FIG. 2 is a partially enlarged cross-sectional view of an oil supply passage of the same embodiment.
【図3】 同実施例の給油通路の固定スクロール鏡板内
配置を示す図。FIG. 3 is a view showing an arrangement of a fuel supply passage in the fixed scroll end plate of the embodiment.
【図4】 給油通路の他の実施例の部分拡大断面図。FIG. 4 is a partially enlarged cross-sectional view of another embodiment of the oil supply passage.
【図5】 図4の実施例の固定スクロール鏡板内の給油
通路配置を示す図。5 is a view showing the arrangement of oil supply passages in the fixed scroll end plate of the embodiment of FIG.
【図6】 給油通路の更に他の実施例の部分拡大断面
図。FIG. 6 is a partially enlarged cross-sectional view of still another embodiment of the oil supply passage.
【図7】 給油通路の更に別の実施例の部分拡大断面
図。FIG. 7 is a partially enlarged sectional view of yet another embodiment of the oil supply passage.
【図8】 一部を管路とした給油通路の実施例を示す部
分断面図。FIG. 8 is a partial cross-sectional view showing an embodiment of a fuel supply passage having a pipe as a part thereof.
【図9】 本発明の実施例の各部寸法関係の説明図。FIG. 9 is an explanatory diagram of dimensional relationships of each part of the embodiment of the present invention.
【図10】 給油通路中に絞り機構を持つ実施例の部分
拡大断面図。FIG. 10 is a partially enlarged cross-sectional view of an embodiment having a throttle mechanism in the oil supply passage.
【図11】 給油通路の更に別の実施例を示す部分拡大
断面図。FIG. 11 is a partially enlarged cross-sectional view showing still another embodiment of the oil supply passage.
【図12】 旋回スクロール鏡板外周部に周方向の給油
溝を用いた平面図。FIG. 12 is a plan view in which a circumferential oil supply groove is used on the outer peripheral portion of the orbiting scroll end plate.
1…密閉容器 2…スクロール圧縮
機構 3…電動機 4…固定スクロール 5…旋回スクロール 6a,6b…油溜り 8a〜8Q…(給油)通路 11…フレーム 14…駆動軸DESCRIPTION OF SYMBOLS 1 ... Airtight container 2 ... Scroll compression mechanism 3 ... Electric motor 4 ... Fixed scroll 5 ... Orbiting scroll 6a, 6b ... Oil sump 8a-8Q ... (lubrication) passage 11 ... Frame 14 ... Drive shaft
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐渡 慎太郎 静岡県清水市村松390番地 株式会社日 立製作所清水工場内 (72)発明者 久野裕幸 静岡県清水市村松390番地 株式会社日 立製作所清水工場内 (72)発明者 村山 朗 静岡県清水市村松390番地 株式会社日 立製作所清水工場内 (72)発明者 福石 忠 静岡県清水市村松390番地 株式会社日 立製作所清水工場内 (72)発明者 萩田直巳 静岡県清水市村松390番地 日立清水エ ンジニアリング株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shintaro Sado, 390 Muramatsu, Shimizu City, Shizuoka Prefecture, inside the Shimizu Plant, Hiritsu Manufacturing Co., Ltd. (72) Hiroyuki Kuno, 390, Muramatsu, Shimizu City, Shizuoka, Ltd. (72) Inventor Akira Murayama 390 Muramatsu, Shimizu-shi, Shizuoka Prefecture Shimizu Plant, Shimizu Plant (72) Inventor Tadashi Fukuishi 390 Muramatsu, Shimizu-shi, Shizuoka Prefecture, Shimizu Plant, Hirate Plant (72) Inventor Naomi Hagita, 390 Muramatsu, Shimizu City, Shizuoka Prefecture Within Hitachi Shimizu Engineering Co., Ltd.
Claims (8)
プを各々有し互にラップを向い合せて鏡板外周部にて互
に摺動する様に噛み合せられた固定スクロールおよび旋
回スクロールと、固定スクロールの鏡板外周部を固定し
ているフレームであって固定スクロールとフレームとの
間に旋回スクロールを配置したフレームと、フレームに
軸受された駆動軸を介して旋回スクロールを固定スクロ
ールに対して旋回運動させるためのモータと、以上の全
要素を収納した密閉容器と、を具備し、密閉容器に固定
支持されたフレームと固定スクロールとによって密閉容
器内部はモータ室と固定スクロール鏡板のラップとは反
対側に存する吐出室とに区分され、密閉容器内部の底部
は油溜りをなし、固定スクロールの鏡板中央の吐出孔か
ら吐出室に吐出された圧縮ガスがモータ室を経て密閉容
器外に排出される様に構成された密閉形の横形スクロー
ル圧縮機において、1端が上記油溜りの油中に通じ、他
端が旋回スクロール鏡板外周部と摺動する固定スクロー
ル鏡板外周部の摺動面に開口している給油通路を設けた
ことを特徴とする横形スクロール圧縮機。1. A fixed scroll and an orbiting scroll, each of which has an end plate and a spiral wrap standing upright and meshed with each other so that the wraps face each other and slide on each other at an outer peripheral portion of the end plate, and a fixed scroll. To rotate the orbiting scroll with respect to the fixed scroll via a frame that fixes the outer peripheral portion of the end plate and has an orbiting scroll arranged between the fixed scroll and the frame, and a drive shaft bearing in the frame. The motor and the hermetically-sealed container containing all of the above-mentioned elements are provided, and the hermetically-sealed container inside is on the opposite side of the motor chamber and the fixed scroll end plate wrap by the frame and the fixed scroll fixedly supported by the hermetically-sealed container. It is divided into a discharge chamber and the bottom of the closed container forms an oil reservoir, which is discharged into the discharge chamber through the discharge hole in the center of the end plate of the fixed scroll. In a hermetic horizontal scroll compressor configured so that the compressed gas is discharged to the outside of the hermetic container through the motor chamber, one end communicates with the oil in the oil sump, and the other end with the outer peripheral portion of the orbiting scroll end plate. A horizontal scroll compressor characterized in that an oil supply passage opening to the sliding surface of the sliding fixed scroll end plate is provided.
内の油溜りと吐出室内の油溜りとに分かれており、前記
給油通路の1端はこれら油溜りのいずれかの油中に通じ
ている請求項1記載の横形スクロール圧縮機。2. An oil sump at the bottom of the closed container is divided into an oil sump in the motor chamber and an oil sump in the discharge chamber, and one end of the oil supply passage communicates with oil in one of these oil sumps. The horizontal scroll compressor according to claim 1.
と吐出室との間の底部連絡油路で連通しており、この連
通油路中に前記給油通路の1端が通じている請求項1記
載の横形スクロール圧縮機。3. An oil sump at the bottom of the closed container communicates with a bottom connecting oil passage between the motor chamber and the discharge chamber, and one end of the oil supply passage communicates with this communicating oil passage. Item 1. The horizontal scroll compressor according to Item 1.
またはフレームおよび固定スクロール鏡板内に延びてい
る請求項1,2または3記載の横形スクロール圧縮機。4. The horizontal scroll compressor according to claim 1, wherein the oil supply passage extends in the fixed scroll end plate or the frame and the fixed scroll end plate.
クロールの鏡板外にある管路よりなる請求項1,2又は
3記載の横形スクロール圧縮機。5. The horizontal scroll compressor according to claim 1, wherein at least a part of the oil supply passage is formed by a pipe line outside the end plate of the fixed scroll.
り機構を設けた請求項1,2,3,4又は5記載の横形
スクロール圧縮機。6. The horizontal scroll compressor according to claim 1, wherein a throttle mechanism for adjusting the amount of oil supply is provided in the middle of the oil supply passage.
たは固定スクロールの鏡板外周部の摺動面に周方向の給
油溝を設けた請求項1ないし6のいずれかに記載の横形
スクロール圧縮機。7. The horizontal scroll compressor according to claim 1, wherein a circumferential oil supply groove is provided on the sliding surface of the outer peripheral portion of the end plate of the orbiting scroll or the sliding surface of the outer peripheral portion of the end plate of the fixed scroll. .
ル鏡板外周部の摺動面において開口する位置と固定スク
ロールの渦巻状ラップを形成するインボリュートの基礎
円の中心と間の距離をL1 、固定スクロール歯底部最外
壁と固定スクロールの前記インボリュートの基礎円の中
心との間の距離をL2 、旋回スクロール鏡板外周縁と固
定スクロールの前記インボリュートの基礎円の中心との
間の距離の最小値をLとし、L−L1 =l1 、L1 −L
2 =l2 とするとき、O<l1<l2 の寸法関係を満た
すことを特徴とする請求項1ないし7のいずれかに記載
の横形スクロール圧縮機。8. The distance between the position where the other end of the oil supply passage opens on the sliding surface of the outer peripheral portion of the fixed scroll end plate and the center of the base circle of the involute forming the spiral wrap of the fixed scroll is L 1 , The distance between the outermost wall of the fixed scroll bottom and the center of the base circle of the involute of the fixed scroll is L 2 , and the minimum value of the distance between the outer peripheral edge of the orbiting scroll end plate and the center of the base circle of the involute of the fixed scroll. It was used as a L, L-L 1 = l 1, L 1 -L
8. The horizontal scroll compressor according to claim 1 , wherein when 2 = l 2 , the dimensional relationship of O <l 1 <l 2 is satisfied.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3200701A JP2543275B2 (en) | 1991-08-09 | 1991-08-09 | Horizontal scroll compressor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3200701A JP2543275B2 (en) | 1991-08-09 | 1991-08-09 | Horizontal scroll compressor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0544664A JPH0544664A (en) | 1993-02-23 |
JP2543275B2 true JP2543275B2 (en) | 1996-10-16 |
Family
ID=16428798
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3200701A Expired - Fee Related JP2543275B2 (en) | 1991-08-09 | 1991-08-09 | Horizontal scroll compressor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2543275B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011089493A (en) * | 2009-10-23 | 2011-05-06 | Hitachi Appliances Inc | Scroll compressor |
EP2863059A4 (en) * | 2012-06-14 | 2016-02-17 | Daikin Ind Ltd | Scroll compression device |
-
1991
- 1991-08-09 JP JP3200701A patent/JP2543275B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011089493A (en) * | 2009-10-23 | 2011-05-06 | Hitachi Appliances Inc | Scroll compressor |
EP2863059A4 (en) * | 2012-06-14 | 2016-02-17 | Daikin Ind Ltd | Scroll compression device |
Also Published As
Publication number | Publication date |
---|---|
JPH0544664A (en) | 1993-02-23 |
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