JP3291484B2 - 2-stage compression type rotary compressor - Google Patents

2-stage compression type rotary compressor

Info

Publication number
JP3291484B2
JP3291484B2 JP24946099A JP24946099A JP3291484B2 JP 3291484 B2 JP3291484 B2 JP 3291484B2 JP 24946099 A JP24946099 A JP 24946099A JP 24946099 A JP24946099 A JP 24946099A JP 3291484 B2 JP3291484 B2 JP 3291484B2
Authority
JP
Japan
Prior art keywords
compression
stage compression
crankshaft
stage
oil
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
JP24946099A
Other languages
Japanese (ja)
Other versions
JP2001073977A (en
Inventor
俊行 江原
昌也 只野
貴志 山川
淳志 小田
健夫 小松原
研治 安藤
Original Assignee
三洋電機株式会社
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 三洋電機株式会社 filed Critical 三洋電機株式会社
Priority to JP24946099A priority Critical patent/JP3291484B2/en
Publication of JP2001073977A publication Critical patent/JP2001073977A/en
Application granted granted Critical
Publication of JP3291484B2 publication Critical patent/JP3291484B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • F04C18/3562Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
    • F04C18/3564Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/001Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008Hermetic pumps

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】この発明は2段圧縮式ロータリコ
ンプレッサに関し、特にたとえば密閉容器の内部空間を
低圧または中間圧とする2シリンダ型の2段圧縮式ロー
タリコンプレッサに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-stage compression type rotary compressor, and more particularly to a two-cylinder type two-stage compression type rotary compressor in which the internal space of a closed vessel is set at a low or intermediate pressure.

【0002】[0002]

【従来の技術】従来、電動要素およびこの電動要素に連
結されるクランク軸により駆動される回転圧縮要素を収
納する密閉容器の内部空間を吐出冷媒ガスにより高圧と
する所謂内部高圧式ロータリコンプレッサにおいては、
ストレート溝でクランク軸中心のオイル穴と連通する横
穴が設けてあり、回転圧縮要素のシリンダに形成された
圧縮室から偏心回転するローラ側への冷媒ガスのリーク
はないが、密閉容器の内部空間を低圧または中間圧とす
る所謂内部低圧(又は中間圧)式ロータリコンプレッサ
においては、高圧圧縮室(高圧室)からローラ側へのリ
ークガスにより、各摺動部、例えばクランク軸とその軸
受部、あるいはクランク軸の偏心部とローラへの給油が
阻害される。
2. Description of the Related Art Conventionally, in a so-called internal high pressure type rotary compressor in which the internal space of a closed vessel containing an electric element and a rotary compression element driven by a crankshaft connected to the electric element is pressurized by refrigerant gas discharged, ,
A straight groove is provided with a horizontal hole communicating with the oil hole at the center of the crankshaft, and there is no leakage of refrigerant gas from the compression chamber formed in the cylinder of the rotary compression element to the eccentrically rotating roller side, but the internal space of the sealed container In a so-called internal low pressure (or intermediate pressure) type rotary compressor in which the pressure is low or intermediate pressure, each sliding portion, for example, a crankshaft and its bearing, or a leakage gas from the high pressure compression chamber (high pressure chamber) to the roller side, or Oil supply to the eccentric part of the crankshaft and the rollers is hindered.

【0003】また、2段圧縮式ロータリコンプレッサに
おいては、高段側、すなわち2段目の圧縮要素が、低段
側、すなわち1段目の圧縮要素より中間仕切板の下側に
ある場合、高圧圧縮室(高圧室)からローラ内側へガス
リークが発生し、このリークガスにより上側に位置する
低段側圧縮要素のオイルシールが不充分となり低段側の
効率を低下させることになる。
In a two-stage compression type rotary compressor, when the high-stage side, that is, the second stage compression element is located on the low-stage side, ie, below the first stage compression element, the high-pressure side, A gas leak occurs from the compression chamber (high-pressure chamber) to the inside of the roller, and this leak gas causes an insufficient oil seal of the lower-stage compression element located on the upper side, thereby lowering the efficiency of the lower-stage side.

【0004】[0004]

【発明が解決しようとする課題】特に、地球環境に与え
る影響が少なくかつ可燃性や毒性のないCO2冷媒の場
合、分子の大きさがCFC(クロロフルオロカーボン)
より小さくリークガス量が多いため効率の低下が著し
い。また、2段圧縮式の場合、低段側の性能低下により
高段側を含むコンプレッサ全体の性能が低下するという
問題がある。
In particular, in the case of a CO2 refrigerant having little influence on the global environment and having no flammability or toxicity, the molecular size is CFC (chlorofluorocarbon).
Since the flow rate is smaller and the amount of leak gas is larger, the efficiency is significantly reduced. Further, in the case of the two-stage compression type, there is a problem that the performance of the entire compressor including the high-stage side is reduced due to the performance reduction on the low-stage side.

【0005】それゆえに、この発明の主たる目的は、簡
単な構成により高圧室からのリークガスの防止を行い各
摺動部に対するオイル潤滑を良好にできる、2段圧縮式
ロータリコンプレッサを提供することである。
[0005] Therefore, a main object of the present invention is to provide a two-stage compression type rotary compressor capable of preventing leak gas from a high-pressure chamber and improving oil lubrication for each sliding portion with a simple structure. .

【0006】[0006]

【課題を解決するための手段】この発明は、底部にオイ
ル溜を有する密閉容器、この密閉容器内の上部空間に配
置される電動機、密閉容器内の下部空間に配置され電動
機に連結されるクランク軸により駆動される回転圧縮機
構を備え、この回転圧縮機構は中間仕切板を介して配置
される低段側圧縮要素と高段側圧縮要素、および各圧縮
要素の開口面を閉塞しクランク軸の軸受部を兼用する上
部支持部材と下部支持部材を含む、2段圧縮式ロータリ
コンプレッサにおいて、低段側圧縮要素を中間仕切板の
上側に配置すると共に、クランク軸に設けた上下偏心部
のオイル溝は中間仕切板へオイルが流れ込む方向に傾き
を設置し、さらに、中間仕切板にガス抜き穴を水平方向
に形成したことを特徴とする、2段圧縮式ロータリコン
プレッサである。
SUMMARY OF THE INVENTION The present invention provides a closed container having an oil reservoir at the bottom, a motor disposed in an upper space in the closed container, and a crank disposed in a lower space in the closed container and connected to the motor. The rotary compression mechanism is driven by a shaft, and the rotary compression mechanism closes the opening surfaces of the low-stage compression element and the high-stage compression element, and each compression element, which are arranged via an intermediate partition plate, and closes the crankshaft. In a two-stage compression type rotary compressor including an upper support member and a lower support member that also serves as a bearing portion, a low-stage compression element is arranged above an intermediate partition plate, and an oil groove of an upper and lower eccentric portion provided on a crankshaft. Is a two-stage compression type rotary compressor characterized in that an inclination is set in a direction in which oil flows into the intermediate partition plate, and a vent hole is formed in the intermediate partition plate in a horizontal direction.

【0007】また、この発明は、底部にオイル溜を有す
る密閉容器、この密閉容器内の上部空間に配置される電
動機、密閉容器内の下部空間に配置され電動機に連結さ
れるクランク軸により駆動される回転圧縮機構を備え、
この回転圧縮機構は中間仕切板を介して配置される低段
側圧縮要素と高段側圧縮要素、および各圧縮要素の開口
面を閉塞しクランク軸の軸受部を兼用する上部支持部材
と下部支持部材を含む、2段圧縮式ロータリコンプレッ
サにおいて、低段側圧縮要素を中間仕切板の下側に配置
すると共に、クランク軸に設けた上下偏心部のオイル溝
は上部支持部材へオイルが流れ込む方向に傾きを設置
し、さらに、上部支持部材にガス抜き穴を水平方向に形
成したことを特徴とする、2段圧縮式ロータリコンプレ
ッサである。
The present invention also provides a closed container having an oil reservoir at the bottom, a motor disposed in an upper space in the closed container, and a crankshaft disposed in a lower space in the closed container and connected to the motor. Rotation compression mechanism,
The rotary compression mechanism includes a low-stage compression element and a high-stage compression element arranged via an intermediate partition plate, and an upper support member and a lower support member which close an opening surface of each compression element and also serve as a bearing of a crankshaft. In the two-stage compression type rotary compressor including the member, the low-stage compression element is arranged below the intermediate partition plate, and the oil groove of the upper and lower eccentric part provided on the crankshaft is in the direction in which oil flows into the upper support member. A two-stage compression type rotary compressor characterized in that an inclination is provided and a gas vent hole is formed in a horizontal direction in an upper support member.

【0008】[0008]

【作用】低段側圧縮要素が中間仕切板の上側に配置され
る場合、クランク軸の上下偏心部のオイル溝は中間仕切
板へオイルが流れ込む方向に傾斜して設置されており、
中間仕切板に設けたガス抜き穴よりリークガスは密閉容
器内へ排出される。
When the low-stage compression element is disposed above the intermediate partition plate, the oil groove of the vertical eccentric portion of the crankshaft is installed so as to be inclined in the direction in which oil flows into the intermediate partition plate.
Leak gas is discharged into the closed container through a gas vent hole provided in the intermediate partition plate.

【0009】また、低段側圧縮要素が中間仕切板の下側
に配置される場合、上下偏心部のオイル溝は上部支持部
材へオイルが流れ込む方向に傾斜して設置されているの
で、リークガスは上部支持部材に設けたガス抜き穴より
密閉容器内へ排出される。
Further, when the low-stage compression element is disposed below the intermediate partition plate, since the oil groove of the upper and lower eccentric portion is installed so as to be inclined in the direction in which oil flows into the upper support member, leak gas is reduced. The gas is discharged into the closed container through a gas vent hole provided in the upper support member.

【0010】[0010]

【発明の効果】この発明によれば、リークガスをオイル
溝とガス抜き穴で低段側の各摺動部への流入を防止し、
良好なオイル潤滑を行い、信頼性が確保できる。
According to the present invention, the leak gas is prevented from flowing into each sliding portion on the lower stage side by the oil groove and the gas vent hole,
Good oil lubrication and reliability can be ensured.

【0011】この発明の上述の目的、その他の目的、特
徴および利点は、図面を参照して行う以下の実施例の詳
細な説明により一層明らかとなろう。
The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the accompanying drawings.

【0012】[0012]

【実施例】図1に示すこの発明の一実施例である内部低
圧式の2シリンダ型2段圧縮式ロータリコンプレッサ1
0は、鋼板からなる円筒状密閉容器12、この密閉容器
12の上部空間に配置された電動機14、この電動機1
4の下部空間に配置されかつこの電動機14に連結され
るクランク軸16により駆動される回転圧縮機構18を
含む。また、密閉容器12は底部をオイル溜とし、電動
機14および回転圧縮機構18を収納する容器本体12
Aと、この容器本体12Aの上部開口を密閉する蓋体1
2Bとの2部材で構成され、蓋体12Bには電動機14
に外部電力を供給するターミナル端子(配線を省略)2
0を取り付けている。
DESCRIPTION OF THE PREFERRED EMBODIMENTS An internal low-pressure two-cylinder two-stage compression type rotary compressor 1 according to an embodiment of the present invention shown in FIG.
Numeral 0 denotes a cylindrical airtight container 12 made of a steel plate, an electric motor 14 arranged in an upper space of the airtight container 12,
4 and includes a rotary compression mechanism 18 driven by a crankshaft 16 connected to the electric motor 14. The hermetically sealed container 12 has an oil reservoir at the bottom, and has a container body 12 containing an electric motor 14 and a rotary compression mechanism 18.
A and a lid 1 for sealing the upper opening of the container body 12A.
2B, and an electric motor 14 on the lid 12B.
Terminal for supplying external power to the device (wiring omitted) 2
0 is attached.

【0013】また、電動機14は、密閉容器12の上部
空間の内周に沿って環状に取り付けられたステ−タ22
と、このステ−タ22の内側に若干の間隙を設けて配置
されたロータ24とからなる。このロータ24にはその
中心を通り鉛直方向に延びるクランク軸16が一体に設
けられている。
The electric motor 14 has a stator 22 mounted annularly along the inner periphery of the upper space of the sealed container 12.
And a rotor 24 arranged with a slight gap inside the stator 22. The rotor 24 is provided integrally with a crankshaft 16 extending vertically through the center thereof.

【0014】ステ−タ22は、リング状の電磁鋼板を積
層した積層体26と、この積層体26に巻装された複数
のコイル28を有している。また、ロータ24もステ−
タ22と同じように電磁鋼板の積層体30で構成された
交流モータである。また、永久磁石を埋装したDCモー
タとすることも可能である。
The stator 22 has a laminated body 26 in which ring-shaped electromagnetic steel sheets are laminated, and a plurality of coils 28 wound around the laminated body 26. Also, the rotor 24 is
This is an AC motor constituted by a laminated body 30 of electromagnetic steel sheets in the same manner as the motor 22. It is also possible to use a DC motor in which permanent magnets are embedded.

【0015】回転圧縮機構18は、低段側圧縮要素32
と高段側圧縮要素34を含み、かつ低段側圧縮要素32
は中間仕切板36の上側に配置され、高段側圧縮要素3
4は中間仕切板36の下側に配置されている。すなわ
ち、中間仕切板36と、この中間仕切板36の上下に設
けられた上下シリンダ38、40と、この上下シリンダ
38、40内をクランク軸16に設けた上下偏心部4
2、44に連結されて回転する上下ローラ46、48
と、この上下ローラ46、48に当接して上下各シリン
ダ38、40内を低圧室(吸込側)と高圧室(吐出側)
に区画する上下ベーン50、52と、上下シリンダ3
8、40の各開口面を閉塞しクランク軸16の各軸受部
を兼用する上部支持部材54と下部支持部材56とで構
成される。また、上部支持部材54および下部支持部材
56には、上下シリンダ38、40と適宜連通する図示
されない吸込通路58、60および吐出消音室62、6
4が夫々形成されると共に、これら各消音室62、64
の開口部は上部プレート66と下部プレート68で閉塞
されている。上下ベーン50、52は上下シリンダ3
8、40のシリンダ壁に形成された半径方向の案内溝7
0、72に往復摺動可能に配置され、かつスプリング7
4、76により上下ローラ46、48に常時当接するよ
うに付勢されている。
The rotary compression mechanism 18 includes a low-stage compression element 32.
And the low-stage compression element 32
Is disposed above the intermediate partition plate 36, and the high-stage compression element 3
4 is arranged below the intermediate partition plate 36. That is, an intermediate partition plate 36, upper and lower cylinders 38 and 40 provided above and below the intermediate partition plate 36, and an upper and lower eccentric portion 4 provided inside the upper and lower cylinders 38 and 40 on the crankshaft 16.
Upper and lower rollers 46 and 48 connected to and rotated by
The lower and upper cylinders 38 and 40 are brought into contact with the upper and lower rollers 46 and 48 to form a low pressure chamber (suction side) and a high pressure chamber (discharge side).
Upper and lower vanes 50 and 52 and upper and lower cylinders 3
An upper support member 54 and a lower support member 56 that close the respective opening surfaces of the crankshafts 8 and 40 and also serve as the bearings of the crankshaft 16. The upper support member 54 and the lower support member 56 have suction passages 58, 60 (not shown) and discharge muffle chambers 62, 6, which are communicated with the upper and lower cylinders 38, 40 as appropriate.
4 are formed respectively, and each of these muffling chambers 62, 64
Is closed by an upper plate 66 and a lower plate 68. The upper and lower vanes 50 and 52 are the upper and lower cylinders 3
Radial guide grooves 7 formed in the cylinder walls 8 and 40
0, 72 and reciprocally slidable, and a spring 7
The rollers 4 and 76 are urged to always contact the upper and lower rollers 46 and 48.

【0016】そして、上シリンダ38では1段目(低圧
側)の圧縮作用が行なわれ、下シリンダ40では上シリ
ンダ38で1段圧縮された冷媒ガスを更に圧縮する2段
目(高圧側)の圧縮作用が行なわれる。
The upper cylinder 38 performs a first-stage (low-pressure side) compression operation, and the lower cylinder 40 performs a second-stage (high-pressure side) compression of the refrigerant gas compressed by the upper cylinder 38 in the first stage. A compression action is performed.

【0017】上述の回転圧縮機構18を構成する各エレ
メントは、上部支持部材54、上シリンダ38、中間仕
切板36、下シリンダ40および下部支持部材56の順
に配置され、上部プレート66および下部プレート68
と共に複数本の取付ボルト78を用いて一体的に連結さ
れている。
The elements constituting the rotary compression mechanism 18 are arranged in the order of an upper support member 54, an upper cylinder 38, an intermediate partition plate 36, a lower cylinder 40 and a lower support member 56, and an upper plate 66 and a lower plate 68.
And are integrally connected using a plurality of mounting bolts 78.

【0018】そして、図4に示すように、クランク軸1
6には軸中心に鉛直方向のオイル穴80が形成されると
共に、このクランク軸16の上下偏心部42、44には
中間仕切板36へ潤滑オイルが流れ込む方向に傾きを設
けた螺旋状オイル溝82、84が夫々形成され、さらに
中間仕切板36にはガス抜き穴86が水平方向に形成さ
れている。なお、螺旋状オイル溝82、84は横方向に
設けた給油孔83、85によりクランク軸16に設けら
れたオイル穴80と連通している。
Then, as shown in FIG.
6, a vertical oil hole 80 is formed at the center of the shaft, and a vertically extending eccentric portion 42, 44 of the crankshaft 16 has a helical oil groove inclined in a direction in which lubricating oil flows into the intermediate partition plate 36. 82 and 84 are formed respectively, and a gas vent hole 86 is formed in the intermediate partition plate 36 in the horizontal direction. The spiral oil grooves 82 and 84 communicate with oil holes 80 provided in the crankshaft 16 through oil supply holes 83 and 85 provided in the lateral direction.

【0019】冷媒としては、地球環境、可燃性および毒
性等を配慮して自然冷媒である二酸化炭素(CO2)を
使用し、また、潤滑油としてのオイルは、例えば鉱物油
(ミネラルオイル)、アルキルベンゼン油、エーテル
油、エステル油等既存のオイルが使用される。
As the refrigerant, carbon dioxide (CO2), which is a natural refrigerant, is used in consideration of the global environment, flammability and toxicity, and the lubricating oil is, for example, mineral oil (mineral oil) or alkylbenzene. Existing oils such as oil, ether oil and ester oil are used.

【0020】また、上部支持部材54および下部支持部
材56には吸込通路58、60および吐出消音室62、
64を経由して上下シリンダ38、40に冷媒を導入す
る上下冷媒導入管88、90と、圧縮された冷媒を吐出
する上下冷媒吐出管92、94が夫々接続されている。
そして、これらの上下冷媒導入管88、90と上下冷媒
吐出管92、94には冷媒配管96、98、100およ
び102が夫々接続されている。さらに、冷媒配管98
と100の間にはアキュムレータ104が接続されてい
る。なお、円筒状密閉容器12の外底部には取付用台座
106が溶接等により固定されている。
The upper support member 54 and the lower support member 56 have suction passages 58, 60 and a discharge muffling chamber 62,
Upper and lower refrigerant introduction pipes 88 and 90 for introducing the refrigerant to the upper and lower cylinders 38 and 40 via 64 and upper and lower refrigerant discharge pipes 92 and 94 for discharging the compressed refrigerant are connected respectively.
Refrigerant pipes 96, 98, 100, and 102 are connected to the upper and lower refrigerant introduction pipes 88, 90 and the upper and lower refrigerant discharge pipes 92, 94, respectively. Further, the refrigerant pipe 98
An accumulator 104 is connected between and. A mounting pedestal 106 is fixed to the outer bottom of the cylindrical airtight container 12 by welding or the like.

【0021】次に上述の実施例の動作概要について説明
する。
Next, an outline of the operation of the above embodiment will be described.

【0022】まず、ターミナル端子20および図示され
ない配線を介して電動機14に通電すると、電動機14
が起動してロータ24に固定されたクランク軸16が回
転する。この回転によりクランク軸16の上下偏心部4
2、44に連結された上下ロ−ラ46、48が上下シリ
ンダ38、40内を偏心回転する。
First, when the motor 14 is energized through the terminal 20 and wiring (not shown), the motor 14
Is started, and the crankshaft 16 fixed to the rotor 24 rotates. This rotation causes the vertical eccentric portion 4 of the crankshaft 16 to rotate.
The upper and lower rollers 46 and 48 connected to the upper and lower cylinders 44 rotate eccentrically in the upper and lower cylinders 38 and 40.

【0023】これにより、冷媒配管96、冷媒導入管8
8および上部支持部材54に形成された吸込通路58を
経由して、図3に示す如く吸込ポート108から上シリ
ンダ38の低圧室38aに吸入された低圧冷媒ガスは、
上ローラ46と上ベーン50の動作により1段目の圧縮
が行われて上シリンダ38の高圧室38bより吐出ポー
ト110、上部支持部材54に形成された吐出消音室6
2、冷媒吐出管92および冷媒配管98より密閉容器1
2外に配置されるアキュムレータ104に送出されて気
液分離が行われる。
Thus, the refrigerant pipe 96 and the refrigerant introduction pipe 8
The low-pressure refrigerant gas sucked into the low-pressure chamber 38a of the upper cylinder 38 from the suction port 108 through the suction passage 58 formed in the upper support member 54 as shown in FIG.
The first-stage compression is performed by the operation of the upper roller 46 and the upper vane 50, and the high-pressure chamber 38 b of the upper cylinder 38 discharges the discharge port 110 and the discharge muffling chamber 6 formed in the upper support member 54.
2. Closed container 1 from refrigerant discharge pipe 92 and refrigerant pipe 98
The gas is sent out to the accumulator 104 disposed outside to perform gas-liquid separation.

【0024】次に、アキュムレータ104から冷媒配管
100、冷媒導入管90、下部支持部材56に形成され
た吸込通路60を経由して、図3に示す如く吸込ポート
109から下シリンダ40の低圧室40aに導入された
中間圧の冷媒ガスは、下ローラ48と下ベーン52の動
作により2段目の圧縮が行われて高圧圧縮ガスとなり下
シリンダ40の高圧室40bより吐出ポート111、下
部支持部材56に形成された吐出消音室64、冷媒吐出
管94および冷媒配管102を経由して冷凍サイクルを
構成する外部冷媒回路(図示せず)に送出される。
Next, from the accumulator 104, through the refrigerant pipe 100, the refrigerant introduction pipe 90, and the suction passage 60 formed in the lower support member 56, as shown in FIG. The intermediate-pressure refrigerant gas introduced into the first cylinder is compressed by the operation of the lower roller 48 and the lower vane 52 in the second stage to become a high-pressure compressed gas, from the high-pressure chamber 40 b of the lower cylinder 40 to the discharge port 111 and the lower support member 56. The refrigerant is sent to an external refrigerant circuit (not shown) constituting a refrigeration cycle via a discharge muffling chamber 64, a refrigerant discharge pipe 94, and a refrigerant pipe 102 formed in the refrigeration cycle.

【0025】また、クランク軸16の回転により、密閉
容器12の底部に貯溜されている潤滑オイル(図示せ
ず)は、図4に示すようにクランク回転軸16の軸中心
に形成された鉛直方向のオイル穴80を上昇し、途中に
設けた横方向の給油孔112、83、85より軸受部お
よび上下偏心部42、44に給油される。そして、オイ
ルに含まれる冷媒ガスは上下偏心部42、44に形成し
た螺旋状オイル溝82、84より中間仕切板36に設け
たガス抜き穴86を通り密閉容器12内に排出される。
As the crankshaft 16 rotates, the lubricating oil (not shown) stored at the bottom of the closed casing 12 is formed at the center of the crankshaft 16 as shown in FIG. And oil is supplied to the bearings and the upper and lower eccentric portions 42 and 44 from the horizontal oil supply holes 112, 83 and 85 provided on the way. The refrigerant gas contained in the oil is discharged from the spiral oil grooves 82 and 84 formed in the upper and lower eccentric portions 42 and 44 through the gas vent holes 86 provided in the intermediate partition plate 36 into the closed container 12.

【0026】従って、リークガスにより低圧側の各摺動
部に対する潤滑オイルの供給を阻害されることはない。
Therefore, the supply of the lubricating oil to each sliding portion on the low pressure side is not hindered by the leak gas.

【0027】次に図2に示す他の実施例である2シリン
ダ型2段圧縮式ロータリコンプレッサ10について説明
する。
Next, a two-cylinder two-stage compression type rotary compressor 10 as another embodiment shown in FIG. 2 will be described.

【0028】この実施例においては、上述の第1の実施
例と比較して、以下の3点が構成上相違し、それに伴い
冷媒導入管88、90、冷媒吐出管92、94、および
冷媒配管96、98、100、102の接続位置が変更
されているだけでその他の構成は同じにつきその説明は
省略する。
This embodiment is different from the first embodiment in the following three points in terms of configuration, and accordingly, refrigerant introduction pipes 88 and 90, refrigerant discharge pipes 92 and 94, and refrigerant pipes Other configurations are the same except that the connection positions of 96, 98, 100, and 102 are changed, and description thereof is omitted.

【0029】まず、回転圧縮機構18の低段側圧縮要素
32が中間仕切板36の下側に配置され、高段側圧縮要
素34が中間仕切板36の上側に配置されている。つぎ
に、中間仕切板36にガス抜き穴86はなく、このガス
抜き穴86は上部支持部材54に水平方向に形成されて
いる。そして、図5に示すようにクランク軸16の上下
偏心部42、44に形成される螺旋状オイル溝82、8
4は共に右肩上がりに傾斜して設けられている。なお、
図6に示すように、螺旋状オイル溝82、84は、横方
向に設けた給油孔83、85によりクランク軸16の軸
中心に設けたオイル穴80に連通してオイルの供給を受
ける。
First, the low-stage compression element 32 of the rotary compression mechanism 18 is disposed below the intermediate partition plate 36, and the high-stage compression element 34 is disposed above the intermediate partition plate 36. Next, there is no gas vent hole 86 in the intermediate partition plate 36, and the gas vent hole 86 is formed in the upper support member 54 in the horizontal direction. Then, as shown in FIG. 5, spiral oil grooves 82, 8 formed in the upper and lower eccentric portions 42, 44 of the crankshaft 16.
4 are both provided so as to rise to the right. In addition,
As shown in FIG. 6, the spiral oil grooves 82 and 84 communicate with oil holes 80 provided in the center of the crankshaft 16 through oil supply holes 83 and 85 provided in the lateral direction to receive oil.

【0030】それゆえに、ターミナル端子20および図
示されない配線を介して電動機14に通電して、電動機
14を起動した場合、クランク回転軸16の回転により
上下偏心部42、44に連結された上下ローラ46、4
8が上下シリンダ38、40内を偏心回転する。この偏
心回転により上下シリンダ38、40内で冷媒ガスの圧
縮作用が行われる。すなわち、下シリンダ38で1段目
の圧縮、上シリンダ40で2段目の圧縮が行われる。
Therefore, when the motor 14 is activated by energizing the motor 14 via the terminal 20 and the wiring (not shown), the upper and lower rollers 46 connected to the upper and lower eccentric portions 42 and 44 by the rotation of the crank rotation shaft 16. , 4
8 rotates eccentrically in the upper and lower cylinders 38 and 40. Due to the eccentric rotation, the refrigerant gas is compressed in the upper and lower cylinders 38 and 40. That is, the lower cylinder 38 performs the first-stage compression, and the upper cylinder 40 performs the second-stage compression.

【0031】そして、クランク軸16の回転により密閉
容器12の底部に貯溜されている潤滑オイルはクランク
軸16の軸中心に沿って鉛直方向に延びるオイル穴80
より上昇し、途中に設けた横方向の給油孔112、11
3、83、85より軸受部や上下偏心部42、44に対
する給油を行う。一方、潤滑オイルに含まれるリークガ
スは給油孔83、85を経由して上下偏心部42、44
に形成されて一方向に傾斜した螺旋状オイル溝82、8
4を通り上部支持部材54に設けた横方向のガス抜き穴
86より密閉容器12内に排出される。
As the crankshaft 16 rotates, the lubricating oil stored at the bottom of the closed casing 12 is filled with oil holes 80 extending vertically along the axis of the crankshaft 16.
The horizontal lubrication holes 112, 11
The oil is supplied to the bearings and the vertical eccentric parts 42 and 44 from 3, 83 and 85. On the other hand, the leak gas contained in the lubricating oil passes through the oil supply holes 83 and 85 and the vertical eccentric portions 42 and 44
Spiral oil grooves 82, 8 formed in one direction and inclined in one direction
4 and is discharged into the closed container 12 through a lateral gas vent hole 86 provided in the upper support member 54.

【0032】従って、リークガスをクランク軸16の上
下偏心部42、44に設けた螺旋状オイル溝82、84
と上部支持部材54に形成した横方向のガス抜き穴86
により排出して低段側の摺動部への流入を防止し、良好
なオイル潤滑を行うことができ、信頼性が確保できる。
Accordingly, the helical oil grooves 82, 84 provided in the upper and lower eccentric portions 42, 44 of the crankshaft 16 leak gas.
And a lateral gas vent hole 86 formed in the upper support member 54
By this, it is possible to prevent discharge and inflow into the sliding portion on the lower stage side, to perform good oil lubrication, and to ensure reliability.

【0033】なお、上述の実施例は、いずれも密閉容器
12内を低圧式とするものであったが、密閉容器12内
に1段目の圧縮ガスを放出し、この圧縮ガスを2段目の
吸入ガスとして2段目の吐出ガスを配管で密閉容器外に
送出する中間圧式でも同様の効果を得ることが出来る。
In each of the above-described embodiments, the inside of the closed vessel 12 is of a low pressure type. However, the first-stage compressed gas is discharged into the closed vessel 12 and the compressed gas is discharged to the second-stage. The same effect can be obtained by an intermediate pressure type in which the discharge gas of the second stage is sent out of the closed container as a suction gas through a pipe.

【図面の簡単な説明】[Brief description of the drawings]

【図1】この発明の一実施例を示す内部低圧式の2シリ
ンダ型2段圧縮式ロータリコンプレッサの要部縦断面図
である。
FIG. 1 is a longitudinal sectional view of a main part of an internal low-pressure two-cylinder two-stage compression type rotary compressor showing an embodiment of the present invention.

【図2】他の実施例を示す同じく内部低圧式2シリンダ
型2段圧縮式ロータリコンプレッサの要部縦断面図であ
る。
FIG. 2 is a longitudinal sectional view of a main part of an internal low-pressure two-cylinder two-stage compression rotary compressor showing another embodiment.

【図3】図1および図2における各圧縮部の要部構成を
模式的に示す図解図である。
FIG. 3 is an illustrative view schematically showing a main part configuration of each compression unit in FIGS. 1 and 2;

【図4】図1における上下偏心部を含むクランク軸の要
部斜面図である。
FIG. 4 is a perspective view of a main part of the crankshaft including a vertical eccentric part in FIG. 1;

【図5】図2における上下偏心部を含むクランク軸の要
部斜面図である。
FIG. 5 is a perspective view of a main part of a crankshaft including a vertical eccentric part in FIG. 2;

【図6】図5におけるA−A矢視の断面図である。FIG. 6 is a sectional view taken along the line AA in FIG. 5;

【符号の説明】[Explanation of symbols]

10 …2段圧縮式ロータリコンプレッサ 12 …円筒状密閉容器 14 …電動機 16 …クランク軸 18 …回転圧縮機構 32 …低段側圧縮要素 34 …高段側圧縮要素 36 …中間仕切板 38、40 …上下シリンダ 42、44 …上下偏心部 46、48 …上下ローラ 50、52 …上下ベーン 54、56 …上部支持部材および下部支持部材 58、60 …吸込通路 62、64 …吐出消音室 82、84 …螺旋状オイル溝 83、85 …給油孔 86 …ガス抜き穴 DESCRIPTION OF SYMBOLS 10 ... Two-stage compression type rotary compressor 12 ... Cylindrical closed container 14 ... Electric motor 16 ... Crankshaft 18 ... Rotary compression mechanism 32 ... Low-stage compression element 34 ... High-stage compression element 36 ... Intermediate partition plate 38,40 ... Cylinders 42, 44 Vertical eccentric portions 46, 48 Vertical rollers 50, 52 Vertical vanes 54, 56 Upper support member and lower support member 58, 60 Suction passages 62, 64 Discharge silence chambers 82, 84 spiral Oil groove 83, 85 ... Oil supply hole 86 ... Gas vent hole

───────────────────────────────────────────────────── フロントページの続き (72)発明者 小田 淳志 大阪府守口市京阪本通2丁目5番5号 三洋電機株式会社内 (72)発明者 小松原 健夫 大阪府守口市京阪本通2丁目5番5号 三洋電機株式会社内 (72)発明者 安藤 研治 大阪府守口市京阪本通2丁目5番5号 三洋電機株式会社内 (56)参考文献 特開 平11−223395(JP,A) 特開 平5−133367(JP,A) 特開 平7−83185(JP,A) 特開 平6−137291(JP,A) 特開 平7−83182(JP,A) 特開 平11−13667(JP,A) 実開 昭63−78184(JP,U) 実開 平5−17190(JP,U) 実開 昭62−43196(JP,U) (58)調査した分野(Int.Cl.7,DB名) F04C 23/00 F04C 18/356 F04C 29/02 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Atsushi Oda 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Takeo Komatsubara 2-5-2 Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd. (72) Inventor Kenji Ando 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (56) References JP-A-11-223395 (JP, A) JP JP-A-5-13367 (JP, A) JP-A-7-83185 (JP, A) JP-A-6-137291 (JP, A) JP-A-7-83182 (JP, A) JP-A-11-13667 (JP, A) , A) Japanese Utility Model 63-184 (JP, U) Japanese Utility Model 5-17190 (JP, U) Japanese Utility Model 62-43196 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB Name) F04C 23/00 F04C 18/356 F04C 29/02

Claims (4)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】底部にオイル溜を有する密閉容器、前記密
閉容器内の上部空間に配置される電動機、前記密閉容器
内の下部空間に配置され前記電動機に連結されるクラン
ク軸により駆動される回転圧縮機構を備え、前記回転圧
縮機構は中間仕切板を介して配置される低段側圧縮要素
と高段側圧縮要素、および前記各圧縮要素の開口面を閉
塞し前記クランク軸の軸受部を兼用する上部支持部材と
下部支持部材を含む、2段圧縮式ロータリコンプレッサ
において、 前記低段側圧縮要素を前記中間仕切板の上側に配置する
と共に、前記クランク軸に設けた上下偏心部のオイル溝
は前記中間仕切板へオイルが流れ込む方向に傾きを設置
し、さらに、前記中間仕切板にガス抜き穴を水平方向に
形成したことを特徴とする、2段圧縮式ロータリコンプ
レッサ。
1. A closed container having an oil reservoir at the bottom, a motor disposed in an upper space in the closed container, and a rotation driven by a crankshaft disposed in a lower space in the closed container and connected to the motor. A compression mechanism is provided, and the rotary compression mechanism also serves as a low-stage compression element and a high-stage compression element, which are arranged via an intermediate partition plate, and a bearing portion of the crankshaft by closing an opening surface of each compression element. A two-stage compression type rotary compressor including an upper support member and a lower support member, wherein the low-stage side compression element is arranged above the intermediate partition plate, and an oil groove of an upper and lower eccentric portion provided on the crankshaft is provided. A two-stage compression type rotary compressor, wherein an inclination is set in a direction in which oil flows into the intermediate partition plate, and a vent hole is formed in the intermediate partition plate in a horizontal direction. .
【請求項2】底部にオイル溜を有する密閉容器、前記密
閉容器内の上部空間に配置される電動機、前記密閉容器
内の下部空間に配置され前記電動機に連結されるクラン
ク軸により駆動される回転圧縮機構を備え、前記回転圧
縮機構は中間仕切板を介して配置される低段側圧縮要素
と高段側圧縮要素、および前記各圧縮要素の開口面を閉
塞し前記クランク軸の軸受部を兼用する上部支持部材と
下部支持部材を含む、2段圧縮式ロータリコンプレッサ
において、 前記低段側圧縮要素を前記中間仕切板の下側に配置する
と共に、前記クランク軸に設けた上下偏心部のオイル溝
は前記上部支持部材へオイルが流れ込む方向に傾きを設
置し、さらに、前記上部支持部材にガス抜き穴を水平方
向に形成したことを特徴とする、2段圧縮式ロータリコ
ンプレッサ。
2. A closed container having an oil reservoir at the bottom, a motor disposed in an upper space in the closed container, and a rotation driven by a crankshaft disposed in a lower space in the closed container and connected to the motor. A compression mechanism is provided, and the rotary compression mechanism also serves as a low-stage compression element and a high-stage compression element, which are arranged via an intermediate partition plate, and a bearing portion of the crankshaft by closing an opening surface of each compression element. A two-stage compression type rotary compressor including an upper support member and a lower support member, wherein the low-stage compression element is arranged below the intermediate partition plate, and an oil groove of an upper and lower eccentric portion provided on the crankshaft. A two-stage compression type rotary compressor, wherein an inclination is set in a direction in which oil flows into the upper support member, and a vent hole is formed in the upper support member in a horizontal direction. Ssa.
【請求項3】前記密閉容器の内部圧力を低圧または中間
圧とする、請求項1または2記載の2段圧縮式ロータリ
コンプレッサ。
3. The two-stage compression type rotary compressor according to claim 1, wherein the internal pressure of the closed container is set to a low pressure or an intermediate pressure.
【請求項4】前記回転圧縮機構で圧縮される冷媒は、二
酸化炭素(CO2)である、請求項1ないし3のいずれ
かに記載の2段圧縮式ロータリコンプレッサ。
4. The two-stage compression type rotary compressor according to claim 1, wherein the refrigerant compressed by said rotary compression mechanism is carbon dioxide (CO2).
JP24946099A 1999-09-03 1999-09-03 2-stage compression type rotary compressor Expired - Fee Related JP3291484B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24946099A JP3291484B2 (en) 1999-09-03 1999-09-03 2-stage compression type rotary compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24946099A JP3291484B2 (en) 1999-09-03 1999-09-03 2-stage compression type rotary compressor

Publications (2)

Publication Number Publication Date
JP2001073977A JP2001073977A (en) 2001-03-21
JP3291484B2 true JP3291484B2 (en) 2002-06-10

Family

ID=17193298

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24946099A Expired - Fee Related JP3291484B2 (en) 1999-09-03 1999-09-03 2-stage compression type rotary compressor

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Country Link
JP (1) JP3291484B2 (en)

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* Cited by examiner, † Cited by third party
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CN100376799C (en) * 2001-09-27 2008-03-26 三洋电机株式会社 Compressor and its producing method, frost removing device of coolant loop, and freezing device
JP3728227B2 (en) * 2001-09-27 2005-12-21 三洋電機株式会社 Rotary compressor
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