JP3564903B2 - Scroll compressor - Google Patents

Scroll compressor Download PDF

Info

Publication number
JP3564903B2
JP3564903B2 JP31911896A JP31911896A JP3564903B2 JP 3564903 B2 JP3564903 B2 JP 3564903B2 JP 31911896 A JP31911896 A JP 31911896A JP 31911896 A JP31911896 A JP 31911896A JP 3564903 B2 JP3564903 B2 JP 3564903B2
Authority
JP
Japan
Prior art keywords
scroll
orbiting scroll
oil
end plate
crankshaft
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
Application number
JP31911896A
Other languages
Japanese (ja)
Other versions
JPH10159759A (en
Inventor
澤井  清
修一 山本
大成 小早川
昭三 長谷
敬 森本
博正 芦谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corp, Matsushita Electric Industrial Co Ltd filed Critical Panasonic Corp
Priority to JP31911896A priority Critical patent/JP3564903B2/en
Publication of JPH10159759A publication Critical patent/JPH10159759A/en
Application granted granted Critical
Publication of JP3564903B2 publication Critical patent/JP3564903B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は空調用あるいは空気圧縮用に用いられるスクロール圧縮機に関するものである。
【0002】
【従来の技術】
従来この種の圧縮機は、例えば図3のような構造(特開平8−193583号公報)になっていた。図3に示す構造においては、圧縮機の動作時にクランク軸110の端部に設けたオイルポンプ115によって汲み上げられた冷凍機油は、クランク軸110の中心部のオイル経路126を経て、旋回スクロールの被駆動軸109の端部に到達する。この部位で冷凍機油は2分割され、主な冷凍機油は旋回スクロール軸109の外周部を潤滑し、クランク軸の大軸部111を潤滑した後、密閉容器1内に戻る。一方、旋回スクロールの被駆動軸109の端部で分かれた冷凍機油の一部は、その軸109の中心部に設けたオイル経路127、端板に設けたオイル経路128、およびこれらオイル経路内に設置された絞り部129を経て、旋回スクロール105の外周部に到達し、圧縮室108に供給され、冷媒ガス圧縮時の密封オイルとして供される。
【0003】
【発明が解決しようとする課題】
しかしながら、このような構造のものでは、圧縮機を低速度で運転時にはオイルポンプ115が汲み上げる冷凍機油の量が少なくなり、旋回スクロールの被駆動軸109の端部でのオイル油面が低下し、場合によっては旋回スクロールの被駆動軸109の中心部に設けたオイル経路127の入り口から冷凍機油が入らなくなるという現象も起こっていた。このような場合には、低速にもかかわらず圧縮室108に密封オイルが供給されず、圧縮中の冷媒ガスが低圧側へ漏れて圧縮効率が低下してしまうという課題があった。
【0004】
本発明はこのような従来の課題を解決するものであり、潤滑用に供給される冷凍機油の一部を低速時においても確実に圧縮室108に供給し、また、その冷凍機油を用いてオルダムリングのキー部の潤滑をも確保することを目的とする。
【0005】
【課題を解決するための手段】
上記課題を解決するために本発明は、低速時のオイルポンプの油量が少ない時においても確実に圧縮室に密封オイルが供給されるように、旋回スクロールの被駆動軸にオイル経路を設定したものである。さらに、その圧縮室に供給されるオイルを利用してオルダムリングのキー部を潤滑するように、旋回スクロールの端板にオイル経路を設けたものである。
【0007】
請求項記載の発明は、旋回スクロールの端板に設けたオイル経路の出口を、その端板の中央より上方に設けたもので、圧縮室に供給される密封オイルを端板の上方から噴出させることで、オルダムリングの上方および下方のいずれのキー部にもオイルを供給し、キー部の摩耗低減を図るものである。
【0008】
【実施例】
以下、本発明の一実施例を添付図面に基づいて説明する。
【0009】
図1は、本発明に係わるスクロール圧縮機を、例えば、空調用冷媒圧縮機として構成したものである。1は円筒状の密閉容器で略水平状態に設置してある。2は固定スクロールであって、端板3の上に渦巻状の羽根4を備えている。5は旋回スクロールであって、端板6の上に渦巻状の羽根7を備えており、この渦巻羽根7は固定スクロール2の渦巻羽根4と噛み合って圧縮室8を構成している。また、旋回スクロール5は端板6の背面に旋回スクロールの被駆動軸9を備えている。10はクランク軸であり、その一端11は大軸であり、その外周部を軸受部材12で支承している。さらに、大軸11は内部に旋回軸受13を備え、この旋回軸受13に旋回スクロール軸9が勘合している。また、クランク軸10の他端は転がり軸受14で支承され、先端部には容積型のオイルポンプ15を備えている。旋回スクロール5の端板6と軸受部品12の間にはオルダムリング16が配設されており、このオルダムリング16は端板6および軸受部品12の両者に係合して、旋回スクロール5の自転を防止している。また、オルダムリング16の内側には、円環状のシール部材17が配設され、圧縮機構部を高圧と低圧に分離する役割を果たしている。18は電動機であり、固定子19と回転子20で構成されている。21は圧縮機構部側の鏡板、22は吸入管、23はオイルポンプ15側の鏡板、24は吐出管である。
【0010】
このスクロール圧縮機の動作について説明する。電動機の固定子20およびクランク軸10が回転すると、旋回スクロール5が旋回運動する。これによって2つの渦巻羽根によって形成された圧縮室8は、外周部から中心部に向かって移動しながら順次容積が減少する。その結果、吸入管22から新たな冷媒ガスが圧縮室8へと吸い込まれるとともに、高圧となった冷媒ガスは固定スクロール2の中心部の吐出孔25から密閉容器1内へと吐き出される。この後、高圧の冷媒ガスは、圧縮機構部と密閉容器1との隙間、電動機18の隙間を経て吐出管24より冷凍サイクル(図示せず)へと出ていく。
【0011】
一方、密閉容器1内には適量の冷凍機油が封入されているが、オイルポンプ15が汲み上げ、クランク軸10の中心部のオイル経路26を経てスクロール圧縮機構部に供給する。旋回スクロールの被駆動軸9の端部に到達した冷凍機油は、この部位で2つに分かれ、主な量は旋回スクロールの被駆動軸9の外周部を潤滑し、その後大軸11の外周部を潤滑した後、密閉容器1内に戻る。一方、旋回スクロール軸9の端部で分かれた冷凍機油の一部は、旋回スクロールの被駆動軸9の中心部に設けたオイル経路27、端板6に設けたオイル経路28、およびオイル経路28内に設置された絞り部29を経て、端板6の上方より旋回スクロール5の外周部に噴出する。
【0012】
図2に示すように、旋回スクロールの被駆動軸9にはオイル経路27の入り口を円断面の中央より下方に設けているので、低速運転時にオイルポンプが汲み上げる冷凍機油の量が少なくなり旋回スクロールの被駆動軸9の端部でのオイル油面が低下した場合にも、確実に旋回スクロールの被駆動軸9のオイル経路27から冷凍機油を圧縮室8に供給することになり、効率の高い運転を維持することができる。
【0013】
また、旋回スクロール5の端板6には、出口が端板6の上方に位置するようにオイル経路28を設けているので、オイル経路27,28および絞り部29を経て圧縮室8に供給される冷凍機油が端板6の上方から噴出されることになり、この冷凍機油によってオルダムリング16の上方および下方のいずれのキー部も潤滑が良好となり、往復摺動するキー部および相手方のキー溝部の摩耗が低減される。
【0014】
【発明の効果】
上記実施例から明らかなように、請求項1記載の発明によれば、旋回スクロールの端板に設けたオイル経路の出口を、その端板の中央より上方に設けたので、圧縮室に供給される密封オイルを端板の上方から噴出させることで、オルダムリングの上方および下方のいずれのキー摺動部にもオイルを供給し、キー部の摩耗を低減することができる。
【図面の簡単な説明】
【図1】本発明に係るスクロール圧縮機の縦断面図
【図2】(a)同スクロール圧縮機の旋回スクロール断面図
(b)(a)中のA−A断面図
【図3】従来のスクロール圧縮機の横断面図
【符号の説明】
1 密閉容器
2 固定スクロール
5 旋回スクロール
8 圧縮室
9 旋回スクロールの被駆動軸
10 クランク軸
12 軸受部品
13 旋回軸受
16 オルダムリング
18 電動機
27 旋回スクロール軸のオイル経路
28 旋回スクロール端板のオイル経路
29 絞り部
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a scroll compressor used for air conditioning or air compression.
[0002]
[Prior art]
Conventionally, this type of compressor has, for example, a structure as shown in FIG. 3 (Japanese Patent Application Laid-Open No. Hei 8-193584). In the structure shown in FIG. 3, the refrigerating machine oil pumped by the oil pump 115 provided at the end of the crankshaft 110 during the operation of the compressor passes through the oil path 126 at the center of the crankshaft 110 and is subjected to the orbiting scroll. The end of the drive shaft 109 is reached. The refrigerating machine oil is divided into two parts at this portion, and the main refrigerating machine oil lubricates the outer peripheral portion of the orbiting scroll shaft 109, lubricates the large shaft portion 111 of the crankshaft, and then returns to the inside of the closed container 1. On the other hand, a part of the refrigerating machine oil divided at the end of the driven shaft 109 of the orbiting scroll is divided into an oil path 127 provided at the center of the shaft 109, an oil path 128 provided at the end plate, and these oil paths. After reaching the outer peripheral portion of the orbiting scroll 105 through the installed throttle portion 129, the compressed gas is supplied to the compression chamber 108 and is provided as a sealed oil when the refrigerant gas is compressed.
[0003]
[Problems to be solved by the invention]
However, in such a structure, when the compressor is operated at a low speed, the amount of the refrigerating machine oil pumped by the oil pump 115 decreases, and the oil level at the end of the driven shaft 109 of the orbiting scroll decreases, In some cases, the phenomenon that the refrigerating machine oil does not enter from the entrance of the oil path 127 provided at the center of the driven shaft 109 of the orbiting scroll has occurred. In such a case, there is a problem that the sealing oil is not supplied to the compression chamber 108 despite the low speed, and the refrigerant gas being compressed leaks to the low pressure side, and the compression efficiency is reduced.
[0004]
The present invention solves such a conventional problem, and reliably supplies a part of the refrigerating machine oil supplied for lubrication to the compression chamber 108 even at a low speed. The purpose is to ensure lubrication of the key portion of the ring.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention sets an oil path on a driven shaft of a orbiting scroll so that the sealed oil is reliably supplied to the compression chamber even when the oil amount of the oil pump at a low speed is small. Things. Further, an oil path is provided in the end plate of the orbiting scroll so as to lubricate the key portion of the Oldham ring using oil supplied to the compression chamber.
[0007]
According to the first aspect of the invention, the outlet of the oil path provided in the end plate of the orbiting scroll is provided above the center of the end plate, and the sealing oil supplied to the compression chamber is ejected from above the end plate. By doing so, oil is supplied to both the upper and lower key portions of the Oldham ring to reduce the wear of the key portions.
[0008]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
[0009]
FIG. 1 illustrates a scroll compressor according to the present invention configured as, for example, an air-conditioning refrigerant compressor. Reference numeral 1 denotes a cylindrical closed container which is installed in a substantially horizontal state. Reference numeral 2 denotes a fixed scroll having a spiral blade 4 on an end plate 3. Reference numeral 5 denotes an orbiting scroll, which is provided with a spiral blade 7 on an end plate 6. The spiral blade 7 meshes with the spiral blade 4 of the fixed scroll 2 to form a compression chamber 8. Further, the orbiting scroll 5 has a driven shaft 9 of the orbiting scroll on the back surface of the end plate 6. Reference numeral 10 denotes a crankshaft, one end 11 of which is a large shaft, the outer periphery of which is supported by a bearing member 12. Further, the large shaft 11 has a swivel bearing 13 therein, and the orbiting scroll shaft 9 is engaged with the swivel bearing 13. The other end of the crankshaft 10 is supported by a rolling bearing 14, and a tip end portion is provided with a positive displacement oil pump 15. An Oldham ring 16 is disposed between the end plate 6 of the orbiting scroll 5 and the bearing component 12, and the Oldham ring 16 engages with both the end plate 6 and the bearing component 12 to rotate the orbiting scroll 5. Has been prevented. An annular seal member 17 is provided inside the Oldham ring 16 and serves to separate the compression mechanism into a high pressure and a low pressure. Reference numeral 18 denotes an electric motor, which includes a stator 19 and a rotor 20. 21 is a head plate on the compression mechanism side, 22 is a suction pipe, 23 is a head plate on the oil pump 15 side, and 24 is a discharge pipe.
[0010]
The operation of the scroll compressor will be described. When the stator 20 and the crankshaft 10 of the electric motor rotate, the orbiting scroll 5 orbits. As a result, the volume of the compression chamber 8 formed by the two spiral blades decreases sequentially while moving from the outer periphery toward the center. As a result, new refrigerant gas is sucked into the compression chamber 8 from the suction pipe 22, and the high-pressure refrigerant gas is discharged from the discharge hole 25 at the center of the fixed scroll 2 into the closed container 1. Thereafter, the high-pressure refrigerant gas flows out of the discharge pipe 24 to a refrigeration cycle (not shown) through a gap between the compression mechanism and the closed casing 1 and a gap between the electric motors 18.
[0011]
On the other hand, although an appropriate amount of refrigerating machine oil is sealed in the closed container 1, the oil pump 15 pumps up the oil and supplies it to the scroll compression mechanism via an oil path 26 at the center of the crankshaft 10. The refrigerating machine oil that has reached the end of the driven shaft 9 of the orbiting scroll is divided into two parts at this portion, and the main amount is to lubricate the outer periphery of the driven shaft 9 of the orbiting scroll, and then the outer periphery of the large shaft 11 After lubricating, the inside of the closed container 1 is returned. On the other hand, part of the refrigerating machine oil divided at the end of the orbiting scroll shaft 9 is divided into an oil path 27 provided at the center of the driven shaft 9 of the orbiting scroll, an oil path 28 provided at the end plate 6, and an oil path 28. Through the narrowing portion 29 installed in the inside, it is jetted from above the end plate 6 to the outer peripheral portion of the orbiting scroll 5.
[0012]
As shown in FIG. 2, since the entrance of the oil path 27 is provided below the center of the circular cross section on the driven shaft 9 of the orbiting scroll, the amount of refrigerating machine oil pumped by the oil pump during low-speed operation is reduced, and the orbiting scroll is driven. Even if the oil level at the end of the driven shaft 9 is lowered, the refrigerating machine oil is reliably supplied to the compression chamber 8 from the oil path 27 of the driven shaft 9 of the orbiting scroll, and the efficiency is high. Driving can be maintained.
[0013]
Further, since the oil path 28 is provided in the end plate 6 of the orbiting scroll 5 so that the outlet is located above the end plate 6, the oil is supplied to the compression chamber 8 through the oil paths 27 and 28 and the throttle portion 29. The refrigerating machine oil is ejected from above the end plate 6, and the refrigerating machine oil improves the lubrication of both the upper and lower key portions of the Oldham ring 16, and the reciprocating key portion and the mating key groove portion. Wear is reduced.
[0014]
【The invention's effect】
As is apparent from the above embodiment, according to the first aspect of the present invention, the outlet of the oil path provided in the end plate of the orbiting scroll is provided above the center of the end plate, so that the oil is supplied to the compression chamber. By discharging the sealing oil from above the end plate, oil can be supplied to both the key sliding portions above and below the Oldham ring, and wear of the key portion can be reduced.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a scroll compressor according to the present invention; FIG. 2 (a) is a sectional view taken along line AA in FIG. 2 (a), and FIG. Cross-sectional view of scroll compressor
DESCRIPTION OF SYMBOLS 1 Closed container 2 Fixed scroll 5 Orbiting scroll 8 Compression chamber 9 Drive shaft 10 of orbiting scroll 10 Crankshaft 12 Bearing part 13 Orbiting bearing 16 Oldham ring 18 Electric motor 27 Oil path of orbiting scroll shaft 28 Oil path of orbiting scroll end plate 29 Throttle Department

Claims (1)

各々の端板の一方の面に渦巻状の羽根を設けるとともにそれぞれの羽根を互いに噛み合わせた固定スクロール及び旋回スクロールと、前記旋回スクロールを偏心駆動するクランク軸と、前記クランク軸を支承する軸受部品と、前記旋回スクロールの自転を拘束するオルダムリングを含んでスクロール圧縮機構を構成し、略水平に設置した円筒状の密閉容器内に、前記クランク軸を駆動する電動機と前記スクロール圧縮機構とを配設し、前記密閉容器内の空間には吐出ガス圧力を作用させ、前記クランク軸の端部より吸い上げた冷凍機油を前記スクロール圧縮機構に供給し摺動部の潤滑に供するとともに、前記旋回スクロールの軸と端板に設けたオイル経路を経て冷凍機油の一部を渦巻状の羽根で形成される圧縮室に供給する構成となし、この旋回スクロールの被駆動軸に設けたオイル経路の入り口をその円断面の中央より下方に設けるとともに、この旋回スクロールの端板に設けたオイル経路の出口を、その端板の中央より上方に設けてなるスクロール圧縮機。A fixed scroll and an orbiting scroll in which spiral blades are provided on one surface of each end plate and the respective blades are meshed with each other; a crankshaft for eccentrically driving the orbiting scroll; and a bearing component for supporting the crankshaft. And a scroll compression mechanism including an Oldham ring for restraining the rotation of the orbiting scroll, and an electric motor for driving the crankshaft and the scroll compression mechanism are arranged in a cylindrical hermetic container installed substantially horizontally. The discharge gas pressure is applied to the space in the closed container, and the refrigerating machine oil sucked up from the end of the crankshaft is supplied to the scroll compression mechanism for lubrication of a sliding portion. A part of the refrigerating machine oil is supplied to a compression chamber formed by spiral blades through an oil path provided on a shaft and an end plate. The entrance of the oil path provided on the driven shaft of the rotary scroll is provided below the center of the circular cross section, and the exit of the oil path provided on the end plate of the orbiting scroll is provided above the center of the end plate. Become a scroll compressor.
JP31911896A 1996-11-29 1996-11-29 Scroll compressor Expired - Fee Related JP3564903B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31911896A JP3564903B2 (en) 1996-11-29 1996-11-29 Scroll compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31911896A JP3564903B2 (en) 1996-11-29 1996-11-29 Scroll compressor

Publications (2)

Publication Number Publication Date
JPH10159759A JPH10159759A (en) 1998-06-16
JP3564903B2 true JP3564903B2 (en) 2004-09-15

Family

ID=18106671

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31911896A Expired - Fee Related JP3564903B2 (en) 1996-11-29 1996-11-29 Scroll compressor

Country Status (1)

Country Link
JP (1) JP3564903B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005083290A (en) * 2003-09-10 2005-03-31 Fujitsu General Ltd Scroll compressor

Also Published As

Publication number Publication date
JPH10159759A (en) 1998-06-16

Similar Documents

Publication Publication Date Title
US8215933B2 (en) Scroll compressor and refrigerating machine having the same
EP1122436B1 (en) Horizontal scroll compressor
KR930008349B1 (en) Scroll compressor
US6071100A (en) Scroll compressor having lubrication of the rotation preventing member
US20060057012A1 (en) Scroll compressor having function of preventing outflow of lubrication oil
JPH109160A (en) Scroll compressor
EP1260713A2 (en) Scroll compressor with Oldham coupling
CN111133197B (en) Scroll compressor having a scroll compressor with a suction chamber
KR20100042168A (en) Scoroll compressor and refrigsrator having the same
KR100677521B1 (en) Oil separation apparatus for scroll compressor
KR100951551B1 (en) Scroll type compressor
KR101474460B1 (en) Scoroll compressor and refrigsrator having the same
JP3564903B2 (en) Scroll compressor
KR101442547B1 (en) Scoroll compressor
KR100620999B1 (en) Apparatus for reducing oil discharge of high pressure scroll compressor
JPH07332258A (en) Scroll compressor
US6079967A (en) Fluid compressor
JPH1122665A (en) Hermetic electric scroll compressor
JP3039072B2 (en) Hermetic compressor
JPS5929791A (en) Scroll compressor
JP6471525B2 (en) Refrigerant compressor
KR100724377B1 (en) Apparatus for reducing oil discharge of high pressure scroll compressor
JP3596063B2 (en) Scroll compressor
KR20010107309A (en) structure for scroll in scroll-type fluid machine
JPH11280679A (en) Scroll compressor

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20040123

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20040127

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040315

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20040518

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20040531

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080618

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090618

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100618

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100618

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110618

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120618

Year of fee payment: 8

LAPS Cancellation because of no payment of annual fees