JP3252404B2 - Scroll compressor - Google Patents
Scroll compressorInfo
- Publication number
- JP3252404B2 JP3252404B2 JP19939391A JP19939391A JP3252404B2 JP 3252404 B2 JP3252404 B2 JP 3252404B2 JP 19939391 A JP19939391 A JP 19939391A JP 19939391 A JP19939391 A JP 19939391A JP 3252404 B2 JP3252404 B2 JP 3252404B2
- Authority
- JP
- Japan
- Prior art keywords
- drive shaft
- compression mechanism
- electric motor
- swirl
- closed container
- 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】この発明は冷凍、空調用に使用さ
れる密閉型スクロール圧縮機の給油潤滑に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to lubrication and lubrication for a hermetic scroll compressor used for refrigeration and air conditioning.
【0002】[0002]
【従来の技術】図4のように、密閉容器の内部に電動機
と、この電動機で駆動する圧縮機構を配設し、前記圧縮
機構を、固定鏡板の上に固定渦巻羽根形成した固定渦巻
羽根部品と、前記固定渦巻羽根と噛み合い複数個の圧縮
作業空間を形成する旋回渦巻羽根を旋回鏡板の上に形成
した旋回渦巻羽根部品と、この旋回渦巻羽根部品の自転
を防止して旋回のみをさせる自転拘束部品と、前記渦巻
羽根部品を旋回駆動するクランク軸と、このクランク軸
の一端に形成した主軸を支承する主軸受を有する軸受部
品とを含んで構成し、前記圧縮機構の吐出気体を前記ク
ランク軸及び前記電動機を含む空間に吐出させ、前記旋
回鏡板の旋回渦巻羽根と反対側に旋回駆動軸を形成し、
前記クランク軸の主軸の内側に偏心して設けた偏心軸受
に前記旋回駆動軸を嵌入させ、前記旋回駆動軸の外方と
このクランク軸の主軸の中心と同心に設けた油ポンプ円
筒内壁との間に環状のポンプ環を介在させ、このポンプ
環とこの油ポンプ円筒内壁の間に吸い込み側と吐き出し
側に仕切る油ポンプ仕切り板を配設して油ポンプを形成
し、前記圧縮機構に近接して潤滑油溜を設け、この潤滑
油溜から前記油ポンプの吸い込み側に向かって油吸込通
路を設け、前記油ポンプの油吐出口から油吐出室を経て
前記偏心軸受及びまたは前記主軸受に向かって給油する
給油経路を形成する。2. Description of the Related Art As shown in FIG. 4, an electric motor and a compression mechanism driven by the electric motor are disposed inside a closed container, and the compression mechanism is a fixed spiral blade part having fixed spiral blades formed on a fixed head plate. A swirling spiral blade member formed on a swiveling head plate and having a plurality of swirling spiral blades meshing with the fixed swirling blade to form a plurality of compression working spaces; and a rotation preventing rotation of the swirling spiral blade component and only performing rotation. A constraining component, a crankshaft for driving the swirl vane component to rotate, and a bearing component having a main bearing for supporting a main shaft formed at one end of the crankshaft. Discharging to a space containing a shaft and the electric motor, forming a turning drive shaft on the opposite side of the turning spiral blade of the turning end plate,
The turning drive shaft is fitted into an eccentric bearing provided eccentrically inside the main shaft of the crankshaft, and between the outside of the turning drive shaft and an inner wall of an oil pump cylinder provided concentrically with the center of the main shaft of the crankshaft. An oil pump partition plate is provided between the pump ring and the inner wall of the oil pump cylinder to partition the suction side and the discharge side between the pump ring and the inner wall of the oil pump. A lubricating oil reservoir is provided, and an oil suction passage is provided from the lubricating oil reservoir toward the suction side of the oil pump, and from the oil discharge port of the oil pump to the eccentric bearing and / or the main bearing via an oil discharge chamber. A refueling path for refueling is formed.
【0003】[0003]
【発明が解決しようとする課題】上記の給油経路は油溜
めから摺動部への潤滑油の供給を、ポンプの力で行って
いるが、構造が複雑であること、また始動時等圧力が急
激に変化した場合、給油経路内で冷媒が発泡し、ポンプ
にガスをかみ、十分なポンプ能力が発揮できず、摺動部
への油給供が不十分となり、軸受損傷を起こす可能性が
あった。In the above-described oil supply path, the supply of lubricating oil from the oil reservoir to the sliding portion is performed by the power of the pump. In the case of a sudden change, the refrigerant foams in the oil supply path, gasses the pump, fails to exhibit sufficient pumping capacity, and insufficient oil supply to the sliding parts, possibly causing bearing damage. there were.
【0004】[0004]
【課題を解決するための手段】駆動軸に貫通穴を設け、
貫通穴の一端は偏心軸受周辺に開孔し、他方は電動機端
部と密閉容器からなる空間に開孔し、圧縮機構に近接し
て潤滑油溜を設け、この潤滑油溜から旋回駆動軸に向か
って油吸込通路を設け、偏心軸受を給油し、駆動軸貫通
穴の開口端に至る給油経路を形成する。A through hole is provided in the drive shaft,
One end of the through hole is opened in the vicinity of the eccentric bearing, the other is opened in the space consisting of the motor end and the sealed container, and a lubricating oil reservoir is provided near the compression mechanism. An oil suction passage is provided toward the eccentric bearing to supply oil to the eccentric bearing, thereby forming an oil supply path leading to the open end of the drive shaft through hole.
【0005】[0005]
【作用】駆動軸に設けた貫通穴が摺動部分の上部から電
動機の上部開孔しており、この両端には吐出冷媒ガスが
モータ周辺を流れる時に生ずる圧力差が生じており、そ
の圧力差分だけ、摺動部分が油溜り部より、圧力が下が
り、その差圧力で油を給供できるため、構造が簡単にな
り、しかも、駆動軸の貫通穴は、圧力の急変によって摺
動部付近に発生するガスを逃がす働きもし、摺動部、油
経路にガスかみが生きず、常に十分な量の油を供給する
作用をする。The through hole provided in the drive shaft is opened from the upper part of the sliding part to the upper part of the motor, and a pressure difference is generated at both ends when the discharged refrigerant gas flows around the motor. However, the sliding part has a lower pressure than the oil sump part, and the oil can be supplied with the pressure difference. This simplifies the structure, and the through hole of the drive shaft is located near the sliding part due to sudden change in pressure. It also works to release the generated gas, so that the gas is not alive in the sliding portion and the oil path, and always acts to supply a sufficient amount of oil.
【0006】[0006]
【実施例】本発明の実施例として、図1にスクロール圧
縮機の縦断面図、図2にその圧縮機構部の部分拡大図、
図3に主軸受への給油通路の詳細を示す。FIG. 1 is a longitudinal sectional view of a scroll compressor, FIG. 2 is a partially enlarged view of a compression mechanism, and FIG.
FIG. 3 shows details of the oil supply passage to the main bearing.
【0007】密閉容器1の内部の下方に圧縮機構2を固
定し、上方にこれを駆動する電動機3の固定子4を固定
し、この電動機3の回転子5に圧縮機構2を駆動するク
ランク軸6を結合し、密閉容器1の下方の圧縮機構2の
周囲を潤滑油溜7にする。[0007] A compression mechanism 2 is fixed below the inside of the closed container 1, a stator 4 of a motor 3 for driving the compression mechanism 2 is fixed above, and a crankshaft for driving the compression mechanism 2 on a rotor 5 of the motor 3. 6 to form a lubricating oil reservoir 7 around the compression mechanism 2 below the closed container 1.
【0008】圧縮機構2は、固定鏡板8に一体に形成し
た固定渦巻羽根9を有する固定渦巻羽根部品10と、こ
の固定渦巻羽根9と噛み合って複数個の圧縮作業空間1
4を形成する旋回渦巻羽根11を旋回鏡板12の上に形
成した旋回渦巻羽根部品13と、この旋回渦巻羽根部品
13の自転を防止して旋回のみをさせる自転拘束部品1
5と、この旋回鏡板12の旋回渦巻羽根11の反対側に
設けた旋回駆動軸16と、クランク軸6の主軸18の内
方に設けこの旋回駆動軸16が嵌入する偏心軸受17
と、このクランク軸6の主軸18を支承する主軸受19
を有する軸受部品21と、旋回鏡板12の背面の旋回鏡
板背面20から微小な間隔の隙間をおいてこの旋回渦巻
羽根部品13の軸方向の動きを制限する鏡板移動制限面
22を配置する。The compression mechanism 2 includes a fixed scroll blade part 10 having a fixed scroll blade 9 integrally formed with a fixed head plate 8, and a plurality of compression working spaces 1 engaged with the fixed scroll blade 9.
A swirl-vane component 13 in which a swirl-vane 11 forming a part 4 is formed on a revolving head plate 12 and a rotation-restricting component 1 that prevents the revolving-vortex-blade component 13 from rotating and only turns.
5, a turning drive shaft 16 provided on the opposite side of the turning spiral blade 11 of the turning end plate 12, and an eccentric bearing 17 provided inside the main shaft 18 of the crankshaft 6 and into which the turning drive shaft 16 fits.
And a main bearing 19 for supporting a main shaft 18 of the crankshaft 6.
And a head moving restriction surface 22 for restricting the axial movement of the swirling spiral blade part 13 with a small gap from the turning head back 20 on the back of the turning head 12.
【0009】圧縮機の吸入管23から吸入した冷媒気体
は、アキュムレーター24を経て、圧縮機構2の吸入口
25から圧縮機構2に入り、圧縮作業空間14で圧縮さ
れ、吐出口26から、吐出マフラー27の内部、固定鏡
板8に設けた吐出通路28、軸受部品21に設けた吐出
通路29を通り電動機3と圧縮機構2の間の電動機下方
吐出室30に吐出される。この吐出冷媒気体は、電動機
周辺通路31から電動機の上方の吐出室32を通過して
電動機3を冷却の後、吐出室33を経て、吐出管34か
ら圧縮機の外に導かれる。The refrigerant gas sucked from the suction pipe 23 of the compressor passes through the accumulator 24, enters the compression mechanism 2 from the suction port 25 of the compression mechanism 2, is compressed in the compression working space 14, and is discharged from the discharge port 26. The gas is discharged into a motor lower discharge chamber 30 between the electric motor 3 and the compression mechanism 2 through a discharge passage 28 provided in the fixed end plate 8 and a discharge passage 29 provided in the bearing component 21 inside the muffler 27. The discharged refrigerant gas passes through the discharge passage 32 above the electric motor from the electric motor peripheral passage 31 to cool the electric motor 3, and then is guided from the discharge pipe 34 to the outside of the compressor through the discharge chamber 33.
【0010】よって、電動機の上方と下方の間に圧力差
が生じる。潤滑油溜7の潤滑油は油吸込通路35から油
溜室36に入る。油溜室36の潤滑油の一部は、旋回駆
動軸16の表面の近傍から主軸給油路37、38を経由
して、主軸18の表面に油溜室36と直接連通しないよ
うに設けた主軸油溝39へ導かれ、主軸受19を潤滑し
た後、バランスウェイト室40へ排出される。油溜室3
6の潤滑油の他の部分は、旋回駆動軸16の表面に油溝
入口41を配置した旋回駆動油溝42を通って偏心軸受
17を潤滑した後、クランク軸6の両端の差圧により貫
通穴43を上昇し潤滑油排出口44を通って、バランス
ウェイト室40へ排出される。Therefore, a pressure difference occurs between the upper part and the lower part of the electric motor. The lubricating oil in the lubricating oil reservoir 7 enters the oil reservoir 36 from the oil suction passage 35. A part of the lubricating oil in the oil sump 36 is provided from the vicinity of the surface of the turning drive shaft 16 via the main shaft oil supply passages 37 and 38 to the surface of the main shaft 18 so as not to directly communicate with the oil sump 36. After being guided to the oil groove 39 and lubricating the main bearing 19, it is discharged to the balance weight chamber 40. Oil reservoir 3
The other part of the lubricating oil 6 lubricates the eccentric bearing 17 through the turning drive oil groove 42 in which the oil groove inlet 41 is arranged on the surface of the turning drive shaft 16, and then penetrates by the differential pressure between both ends of the crankshaft 6. The liquid is discharged to the balance weight chamber 40 through the lubricating oil discharge port 44 by ascending the hole 43.
【0011】また、貫通穴43は、フォーミング現象発
生時に、ガスを抜き去る働きもする。The through hole 43 also functions to remove gas when a forming phenomenon occurs.
【0012】[0012]
【発明の効果】圧縮機構より吐出された冷媒気体が、電
動機周辺通路を通過して吐出室へ至るため、電動機の両
端すなわちクランク軸貫通穴の両端に圧力差を生じる。
この圧力差を利用して旋回駆動軸・偏心軸受を給油する
ため、次のような効果が得られる。The refrigerant gas discharged from the compression mechanism passes through the peripheral passage of the motor and reaches the discharge chamber, so that a pressure difference is generated between both ends of the motor, that is, both ends of the crankshaft through hole.
Since the turning drive shaft and the eccentric bearing are lubricated using this pressure difference, the following effects can be obtained.
【0013】(1)安定した給油が可能となり、信頼性
が向上する。 (2)クランク軸貫通穴がガス抜きの作用も兼ねるた
め、フォーミング現象によりガスが発生した場合でも、
給油経路のガスかみ込みを防止することができ、信頼性
が向上する。(1) Stable lubrication is possible, and reliability is improved. (2) Since the crankshaft through hole also functions as a gas vent, even if gas is generated due to the forming phenomenon,
Gas entrapment in the oil supply path can be prevented, and reliability is improved.
【0014】(3)特別なポンプが不要のため、安価に
構成できる。(3) Since a special pump is not required, it can be constructed at a low cost.
【図1】本発明にかかるスクロール圧縮機の一実施例の
縦断面図FIG. 1 is a longitudinal sectional view of one embodiment of a scroll compressor according to the present invention.
【図2】同要部拡大断面図FIG. 2 is an enlarged sectional view of a main part of the same.
【図3】(a)は同要部一部切欠正面図 (b)は同要部正面図 (c)は同要部上面図FIG. 3 (a) is a front view of the main part with a partial cutaway, (b) is a front view of the main part, and (c) is a top view of the main part.
【図4】従来例の縦断面図FIG. 4 is a longitudinal sectional view of a conventional example.
1 密閉容器 2 圧縮機構部 3 電動機 6 クランク軸 7 潤滑油溜 9 固定渦巻羽根 11 旋回渦巻羽根 16 旋回駆動軸 17 偏心軸受 35 油吸込通路 43 貫通穴 44 潤滑油排出口 DESCRIPTION OF SYMBOLS 1 Closed container 2 Compression mechanism part 3 Electric motor 6 Crankshaft 7 Lubricating oil reservoir 9 Fixed spiral blade 11 Rotating spiral blade 16 Rotating drive shaft 17 Eccentric bearing 35 Oil suction passage 43 Through hole 44 Lubricating oil discharge port
Claims (2)
駆動する圧縮機構部を配設し、この電動機により密閉空
間を区切り、その一方の空間に前記圧縮機構部を配し、
その圧縮機構部によって圧縮された気体を、前記圧縮機
構部を配した空間に吐出し、前記電動機の周囲を経由
し、前記電動機の端部と前記密閉容器の一部からなる他
方の密閉空間に導き、この密閉空間より、前記密閉容器
外へ吐出させる密閉型圧縮機の前記圧縮機構部を、固定
鏡板の上に固定渦巻羽根形成した固定渦巻羽根部品と、
前記固定渦巻羽根と噛み合い複数個の圧縮作業空間を形
成する旋回渦巻羽根を旋回鏡板の上に形成した旋回渦巻
羽根部品と、この旋回渦巻羽根部品の自転を防止して旋
回のみをさせる自転拘束部品と、前記渦巻羽根部品を旋
回駆動する駆動軸と、この駆動軸端および旋回鏡板の旋
回渦巻羽根と反対側に、駆動軸中心より偏心して設けら
れた旋回駆動軸および偏心軸受と、前記駆動軸を支承す
る主軸受から構成し、前記駆動軸に貫通穴を設け、その
貫通穴の一端は偏心軸受周辺に開孔し、他方は前記電動
機の端部と前記密閉容器からなる空間に開孔し、前記圧
縮機構部に近接して潤滑油溜を設け、この潤滑油溜から
前記旋回駆動軸に向かって油吸込通路を設け、前記偏心
軸受を給油し、前記駆動軸貫通穴の開口端に至る給油経
路を形成したスクロール圧縮機。An electric motor and a compression mechanism driven by the electric motor are disposed inside the closed container, the enclosed space is separated by the electric motor, and the compression mechanism is disposed in one of the spaces.
The gas compressed by the compression mechanism is discharged into a space in which the compression mechanism is disposed, passes through the periphery of the electric motor, and flows into the other enclosed space including an end of the electric motor and a part of the closed container. Guided, from the closed space, the compression mechanism portion of the hermetic compressor that discharges out of the closed container, a fixed spiral blade component formed with a fixed spiral blade on a fixed head plate,
A swirling swirl blade part having a swirl swirl blade formed on a swivel head plate that meshes with the fixed swirl blade to form a plurality of compression work spaces; and a rotation restraint component that prevents the swirl swirl blade part from rotating and only turns A drive shaft for rotating and driving the swirl vane component, a swivel drive shaft and an eccentric bearing provided eccentrically from the center of the drive shaft on the drive shaft end and on the opposite side of the swirl vane of the swivel head plate, and the drive shaft The drive shaft is provided with a through hole, one end of the through hole is opened around the eccentric bearing, and the other is opened in a space formed by the end of the electric motor and the closed container. Providing a lubricating oil reservoir adjacent to the compression mechanism, providing an oil suction passage from the lubricating oil reservoir toward the turning drive shaft, supplying oil to the eccentric bearing, and reaching an opening end of the drive shaft through hole. A screen with a lubrication path Lumpur compressor.
部を下部に配し、圧縮機構部周辺を潤滑油溜とした、請
求項1記載のスクロール圧縮機。2. The scroll compressor according to claim 1, wherein an electric motor is disposed at an upper part and a compression mechanism is disposed at a lower part in the closed container, and a lubricating oil reservoir is provided around the compression mechanism.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19939391A JP3252404B2 (en) | 1991-08-08 | 1991-08-08 | Scroll compressor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19939391A JP3252404B2 (en) | 1991-08-08 | 1991-08-08 | Scroll compressor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0544666A JPH0544666A (en) | 1993-02-23 |
JP3252404B2 true JP3252404B2 (en) | 2002-02-04 |
Family
ID=16407037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19939391A Expired - Fee Related JP3252404B2 (en) | 1991-08-08 | 1991-08-08 | Scroll compressor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3252404B2 (en) |
-
1991
- 1991-08-08 JP JP19939391A patent/JP3252404B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0544666A (en) | 1993-02-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |