JPH1047283A - Scroll compressor - Google Patents
Scroll compressorInfo
- Publication number
- JPH1047283A JPH1047283A JP19872796A JP19872796A JPH1047283A JP H1047283 A JPH1047283 A JP H1047283A JP 19872796 A JP19872796 A JP 19872796A JP 19872796 A JP19872796 A JP 19872796A JP H1047283 A JPH1047283 A JP H1047283A
- Authority
- JP
- Japan
- Prior art keywords
- lubricating oil
- oil
- main shaft
- shell
- scroll
- 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.)
- Pending
Links
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、空調あるいは冷凍
ユニットなどに用いられるスクロール圧縮機に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scroll compressor used for an air conditioning or refrigeration unit.
【０００２】[0002]
【従来の技術】従来のスクロール圧縮機としては特公平
４−７２９９８号公報に示されているものがある。以
下、図面を参照にしながら上記従来のスクロール圧縮機
を説明する。2. Description of the Related Art A conventional scroll compressor is disclosed in Japanese Patent Publication No. 4-72998. Hereinafter, the conventional scroll compressor will be described with reference to the drawings.
【０００３】図４は従来のスクロール圧縮機の断面図で
ある。また、図５は図４のシェル下部断面図である。FIG. 4 is a sectional view of a conventional scroll compressor. FIG. 5 is a sectional view of the lower part of the shell of FIG.
【０００４】図４において、１は固定スクロール、２は
旋回スクロール、３は吸入口（吸入室）、４は吐出ポー
ト、５は圧縮室、６は主軸、７は吸入口７ａを有し、主
軸６下端と一定隙間を持って主軸下端部を覆うように装
着されたオイルキャップ、８，９は軸受フレーム、１０
はモータ・ロータ、１１はモータ・ステータ、１２はシ
ェル、１３はオルダム継手、１４は邪魔板、１５はシェ
ル１２底部に設けた油溜で潤滑油１５ａがたまってい
る。In FIG. 4, 1 is a fixed scroll, 2 is a revolving scroll, 3 is a suction port (suction chamber), 4 is a discharge port, 5 is a compression chamber, 6 is a main shaft, 7 is a main shaft, and 7 has a main shaft. 6, an oil cap mounted so as to cover the lower end of the spindle with a certain gap from the lower end, 8, 9 are bearing frames, 10
Denotes a motor / rotor, 11 denotes a motor / stator, 12 denotes a shell, 13 denotes an Oldham coupling, 14 denotes a baffle plate, and 15 denotes an oil reservoir provided at the bottom of the shell 12 and stores lubricating oil 15a.
【０００５】１６は吸入管、１７は吐出管、１８は主軸
６に偏心して設けられた旋回スクロール軸２ｂと回転自
在に嵌入された旋回軸受、１９は主軸６上部の大径部６
ａを支承する第１の主軸受、２０は主軸６下部の小径部
６ｂを支承する第２の主軸受、２１は旋回スクロール２
の下端の軸方向から支承する第１のスラスト軸受、２２
は主軸６の大径部６ａと小径部６ｂ間の段部６ｃを軸方
向から支承する第２のスラスト軸受、２３は主軸６下端
に開口部２３ａを有し、主軸６内にその軸心より偏心し
て設けられた給油口で、各軸受１８、２０部へ連通して
いる。[0005] Reference numeral 16 denotes a suction pipe, 17 denotes a discharge pipe, 18 denotes a revolving bearing rotatably fitted to a revolving scroll shaft 2b eccentrically provided on the main shaft 6, and 19 denotes a large diameter portion 6 on the upper portion of the main shaft 6.
a is a first main bearing, 20 is a second main bearing that supports the small diameter portion 6b below the main shaft 6, and 21 is the orbiting scroll 2.
Thrust bearing, which is supported from the axial direction at the lower end of the first thrust bearing, 22
Is a second thrust bearing that axially supports a step 6c between the large-diameter portion 6a and the small-diameter portion 6b of the main shaft 6, and 23 has an opening 23a at the lower end of the main shaft 6, and is provided inside the main shaft 6 from its axial center. An eccentric oil supply port communicates with each of the bearings 18 and 20.
【０００６】２４は主軸６内に設けられたガス抜き穴、
２５，２６は潤滑油経路用の返油穴、２７，２８は吸入
ガス経路用の連通口、３０は主軸６下端部を貫通させる
貫通穴３０ａと外縁部３０ｂと返油穴３０ｃを有し、主
軸６の下端部において油溜１５の上方を覆う仕切板で、
貫通穴３０ａは大径の押出基部３００ａと、小径の押出
基部３００ｂからなり、大径の押出基部３００ａと小径
の押出基部３００ｂで形成される一定長さの流通路３０
０ｃと、押出基部３００ａから押出基部３００ｂへ至る
に従い貫通穴３０ａの径が小さくするように油溜１５側
に突出した油上がり抑制通路３００ｄを有する。３１は
返油穴３０ｃを覆うように取りつけられた逆止弁であ
る。Reference numeral 24 denotes a gas vent hole provided in the main shaft 6,
25 and 26 are oil return holes for a lubricating oil path, 27 and 28 are communication ports for an intake gas path, 30 has a through hole 30a penetrating the lower end of the main shaft 6, an outer edge 30b, and an oil return hole 30c. A partition plate that covers the upper part of the oil reservoir 15 at the lower end of the main shaft 6,
The through hole 30a includes a large-diameter extruded base 300a and a small-diameter extruded base 300b, and the flow passage 30 having a fixed length formed by the large-diameter extruded base 300a and the small-diameter extruded base 300b.
0c and an oil rise suppression passage 300d protruding toward the oil reservoir 15 so that the diameter of the through hole 30a decreases from the extrusion base 300a to the extrusion base 300b. Reference numeral 31 denotes a check valve attached so as to cover the oil return hole 30c.
【０００７】以上のように構成されたスクロール圧縮機
について以下その動作を説明する。モータ・ロータ１０
が回転すると、主軸６及びオルダム継手１３を介して旋
回スクロール２が旋回運動を始め、圧縮が開始する。こ
の時、冷媒ガスは吸入館１６よりシェル１２内に吸入さ
れ実線矢印に示すように軸受フレーム９とモータ・ステ
ータ１１との間の連通口２７、モータ・ロータ１０とモ
ータ・ステータ１１との間のエアギャップなどを通過し
てモータを冷却した後、シェル１２と軸受フレーム８，
９との間の連通口２８を通って固定スクロール１に設け
た吸入口３より圧縮室５へ取り込まれ圧縮される。The operation of the scroll compressor constructed as described above will be described below. Motor rotor 10
Is rotated, the orbiting scroll 2 starts orbiting via the main shaft 6 and the Oldham coupling 13, and compression starts. At this time, the refrigerant gas is sucked into the shell 12 from the suction hall 16 and communicates with the communication port 27 between the bearing frame 9 and the motor / stator 11 as shown by the solid arrow, and between the motor rotor 10 and the motor / stator 11. After cooling the motor through an air gap or the like, the shell 12 and the bearing frame 8,
9 is taken into the compression chamber 5 through a suction port 3 provided in the fixed scroll 1 through a communication port 28 between the pressure chamber 9 and the compressed scroll 1.
【０００８】圧縮されたガスは、吐出ポート４を経て吐
出管１７より圧縮機外へ排出される。又潤滑油１５ａ
は、油溜１５より破線矢印で示すように、主軸６に配設
されたオイル・キャップ７及び給油口２３による遠心ポ
ンプ作用によりオイル・キャップ７の吸入口７ａから給
油口２３を通して各軸受１８，２０を給油し、さらに軸
受１８からは軸受２１，１９，２２に給油される。[0008] The compressed gas is discharged from the compressor through the discharge pipe 17 through the discharge port 4. Lubricating oil 15a
As shown by a broken line arrow from the oil reservoir 15, the bearings 18, 18 through the oil supply port 23 through the oil supply port 23 of the oil cap 7 by the centrifugal pump action of the oil cap 7 and the oil supply port 23 disposed on the main shaft 6. Oil is supplied from the bearing 18 to the bearings 21, 19, and 22.
【０００９】軸受２１等から漏れ出た潤滑油１５ａが直
接吸入口３へ吸引されないよう邪魔板１４が軸受フレー
ム８と旋回スクロール２の外周面との間の隙間を閉鎖す
るように設けられ、邪魔板１４と旋回スクロール２によ
り吸入口３と摺動機構部とを分離している。又、主軸６
に設けられたガス抜き穴２４は、圧縮機の機動時、オイ
ルキャップ７内のガスを迅速に軸外へ排出し、ポンプ効
率を高めるためのものである。A baffle plate 14 is provided so as to close the gap between the bearing frame 8 and the outer peripheral surface of the orbiting scroll 2 so that the lubricating oil 15a leaking from the bearing 21 or the like is not directly sucked into the suction port 3. The plate 14 and the orbiting scroll 2 separate the inlet 3 from the sliding mechanism. Also, spindle 6
The gas vent hole 24 is provided for quickly discharging the gas in the oil cap 7 to the outside of the shaft when the compressor operates, thereby improving the pump efficiency.
【００１０】返油口２６から排油された潤滑油１５ａ
は、いったん仕切板３０上面にたまる。仕切板３０上面
にたまった潤滑油１５ａは、潤滑油１５ａのヘッド差圧
により逆止弁３１が開いているため、返油穴３０ｃ及
び、貫通穴３０ａを通過して油溜１５へ戻される。一
方、圧縮機の停止中に油溜１５内の潤滑油１５ａ中に冷
媒が寝込んだ状態で起動時などにフォーミングが生じた
場合、図５に示すように、発砲による差圧の為に逆止弁
３１の自動端側が押しあげられ、返油穴３０ｃは閉じら
れるため、返油穴３０ｃを通過して潤滑油が上方へ逆流
することはない。The lubricating oil 15a discharged from the oil return port 26
Once accumulate on the upper surface of the partition plate 30. The lubricating oil 15a accumulated on the upper surface of the partition plate 30 is returned to the oil reservoir 15 through the oil return hole 30c and the through hole 30a because the check valve 31 is opened due to the head pressure difference of the lubricating oil 15a. On the other hand, when forming occurs at the time of start-up or the like with the refrigerant stagnating in the lubricating oil 15a in the oil reservoir 15 while the compressor is stopped, as shown in FIG. Since the automatic end of the valve 31 is pushed up and the oil return hole 30c is closed, the lubricating oil does not flow upward through the oil return hole 30c.
【００１１】又、貫通穴３０ａは主軸下端部のオイル・
キャップ７の側周面と仕切板の押出基部３００ａからそ
の先端部３００ｂで形成される一定長さの流通路３００
ｃを有し、しかも押出基部３００ａからその先端部３０
０ｂへ至るに従いその径が小さくなるように油溜１５側
に突出した油上がり抑制通路３００ｄを備えているた
め、貫通穴３０ａを通しての、潤滑油１５ａの上方への
逆流は、一定長さの流通路３００ｃ及び前記油上がり抑
制通路３００ｄによる流通抵抗により抑制でき、潤滑油
１５ａの流路は図５の破線矢印に示すようになる。The through hole 30a is provided with an oil hole at the lower end of the spindle.
A constant-length flow passage 300 formed from the side peripheral surface of the cap 7 and the extruded base 300a of the partition plate to its tip 300b.
c from the extruding base 300a to the tip 30
0b, the upward flow of the lubricating oil 15a through the through-hole 30a is restricted by a certain length of oil flow. The flow can be suppressed by the flow resistance of the passage 300c and the oil rise suppression passage 300d, and the flow passage of the lubricating oil 15a becomes as shown by the broken arrow in FIG.
【００１２】更に、この仕切板３０は下方から上方への
流体のながれを抑制する特性を持つため、仕切板３０よ
り下方にある油溜１５の潤滑油１５ａは、圧縮機の起動
時、仕切板３０より下面のない圧が下がりにくく、フォ
ーミング自体も抑えている。Further, since the partition plate 30 has a characteristic of suppressing the flow of fluid from below to above, the lubricating oil 15a of the oil reservoir 15 below the partition plate 30 is supplied to the partition plate 30 when the compressor is started. The pressure without the lower surface is less than that of 30, and the forming itself is suppressed.
【００１３】[0013]
【発明が解決しようとする課題】しかしながら、上記従
来の機構は、仕切板３０上面にたまった潤滑油１５ａが
油溜１５に返油されるには、返油穴３０ｃ及び貫通穴３
０ａを通過しなければならないが、吸入管１６からシェ
ル１２内に吸入された冷媒ガスは主にシェル１２内壁と
モータ・ステータ１１との隙間を通過する上方から下方
への流れと、主軸６及びモータ・ロータ１０による遠心
力によるシェル１２内壁方向への流れを持つため、仕切
板３０上面に溜まった潤滑油１５ａはシェル１２内壁下
方へ流れようとし、水平方向の流れを持つため、返油穴
３０ｃ及び貫通穴３０ａを通過しない潤滑油１５ａがで
き、再び冷媒ガスと潤滑油１５ａが混合し、冷凍サイク
ル中に流出するという欠点があった。However, in the above-mentioned conventional mechanism, the lubricating oil 15a accumulated on the upper surface of the partition plate 30 is returned to the oil reservoir 15 in order to return the lubricating oil 15a to the oil reservoir 15 and the through-hole 3c.
0a, but the refrigerant gas sucked into the shell 12 from the suction pipe 16 flows mainly from the upper side to the lower side passing through the gap between the inner wall of the shell 12 and the motor / stator 11, and the main shaft 6 and The lubricating oil 15a accumulated on the upper surface of the partition plate 30 tends to flow below the inner wall of the shell 12 due to the flow toward the inner wall of the shell 12 due to the centrifugal force of the motor / rotor 10, and has a horizontal flow. Lubricating oil 15a that does not pass through 30c and through hole 30a is formed, and there is a disadvantage that the refrigerant gas and lubricating oil 15a are mixed again and flow out during the refrigeration cycle.
【００１４】また、逆止弁３１が圧縮機運転中の圧力脈
動により開閉を繰り返し、仕切板３０に接触、非接触
し、異常音が発生するという欠点があった。Further, there is a disadvantage that the check valve 31 repeatedly opens and closes due to the pressure pulsation during the operation of the compressor, and comes into contact with the non-contact with the partition plate 30 to generate an abnormal sound.
【００１５】本発明は従来の過大を解決するもので、一
端冷媒ガス中より分離された潤滑油を冷媒と潤滑油の再
混合する前に、効率よく油溜に回収し圧縮機外への潤滑
油の持ち出しを防止するとともに、圧力脈動の影響によ
り異常音が発生することのないスクロール圧縮機を提供
するものである。The present invention solves the problem of the prior art, in which lubricating oil once separated from the refrigerant gas is efficiently collected in an oil reservoir and lubricated to the outside of the compressor before the refrigerant and the lubricating oil are remixed. An object of the present invention is to provide a scroll compressor which prevents oil from being taken out and does not generate abnormal noise due to the influence of pressure pulsation.
【００１６】[0016]
【課題を解決するための手段】この目的を解決するため
本発明は、中央部主軸を貫通させる貫通穴、外周部の下
面側にアール形状を有した潤滑油分離面、潤滑油分離面
とシェルとの間に形成される返油通路から構成される潤
滑油量保持装置を設けたものである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a through hole through which a central main shaft passes, a lubricating oil separating surface having a round shape on the lower surface side of an outer peripheral portion, a lubricating oil separating surface and a shell. And a lubricating oil amount holding device constituted by an oil return passage formed between the two.
【００１７】これにより、一端冷媒ガス中より分離され
た潤滑油を冷媒と潤滑油の再混合する前に、効率よく油
溜に回収し圧縮機外への潤滑油の持ち出しを防止すると
ともに、圧力脈動の影響により異常音が発生することの
ないスクロール圧縮機を提供することができる。Thus, before the lubricating oil once separated from the refrigerant gas is remixed with the refrigerant and the lubricating oil, the lubricating oil is efficiently collected in the oil sump to prevent the lubricating oil from being taken out of the compressor, It is possible to provide a scroll compressor that does not generate abnormal noise due to pulsation.
【００１８】[0018]
【発明の実施の形態】本発明のスクロール圧縮機は、そ
れぞれ渦巻を有し、これらの渦巻を互いに組み合わせる
ことにより前記渦巻間に圧縮室を形成する固定スクロー
ル及び旋回スクロールと、前記旋回スクロールに旋回運
動を与え、前記圧縮室内に吸入された冷媒ガスを圧縮さ
せる主軸及びオルダム継手と、前記主軸を回転可能に支
承する主軸受を有するフレームと、前記フレームの下方
に設けられ前記主軸を回転させるモータと、前記主軸下
方に設けられ潤滑油を溜める油溜と、前記固定スクロー
ル及び旋回スクロールを上部に前記モータを下部に位置
させて前記主軸の下端を油溜内に浸漬するように収納す
るシェルと、前記主軸の回転または差圧により前記油溜
内の潤滑油を前記主軸下端に形成された吸入口を介して
前記主軸受部に供給する給油口と、中央部に前記主軸を
貫通させる貫通穴と、外周部の下面側にアール形状を有
した潤滑油分離面と、前記潤滑油分離面と前記シェルと
の間に形成される返油通路から構成されている潤滑油量
保持装置と、前記潤滑油量保持装置をシェル内に支持す
る潤滑油量保持装置支持板から構成されており、吸入管
から吸入された冷媒ガスがシェル内に入り、シェル内
壁、モータ・ステータ表面、潤滑油分離面で分離した潤
滑油を、冷媒ガスと潤滑油との再混合する前に油溜内に
効率よく返油し、圧縮機外への油の持ち出しを防止する
ことができる。又、潤滑油量保持装置は、従来のスクロ
ール圧縮機での、圧縮機運転中の圧力脈動により、逆止
弁が開閉を繰り返し、仕切板に接触、非接触することに
よる異常音の発生を防ぐことができる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A scroll compressor according to the present invention has spirals, and a fixed scroll and an orbiting scroll which form a compression chamber between the spirals by combining the spirals with each other; A frame having a main shaft and an Oldham coupling for providing motion and compressing the refrigerant gas sucked into the compression chamber, a frame having a main bearing rotatably supporting the main shaft, and a motor provided below the frame and rotating the main shaft An oil reservoir provided below the main shaft for storing lubricating oil, and a shell for storing the fixed scroll and the orbiting scroll at an upper portion, the motor positioned at a lower portion, and immersing a lower end of the main shaft in the oil reservoir. The lubricating oil in the oil reservoir is supplied to the main bearing portion through a suction port formed at the lower end of the main shaft by rotation or differential pressure of the main shaft. A lubrication port, a through hole through the main shaft at the center, a lubricating oil separating surface having a round shape on the lower surface side of the outer peripheral portion, and a return hole formed between the lubricating oil separating surface and the shell. A lubricating oil amount holding device configured by an oil passage; and a lubricating oil amount holding device supporting plate that supports the lubricating oil amount holding device in the shell. The lubricating oil separated on the inner wall of the shell, the surface of the motor / stator, and the lubricating oil separating surface is efficiently returned to the oil sump before remixing with the refrigerant gas and the lubricating oil. Can be prevented from being taken out. Also, the lubricating oil amount holding device prevents the occurrence of abnormal noise caused by the check valve repeatedly opening and closing due to pressure pulsation during the operation of the conventional scroll compressor and coming into contact with or not contacting the partition plate. be able to.
【００１９】[0019]
【実施例】以下、本発明によるスクロール圧縮機の第１
の実施例について、図面を参照にしながら説明する。な
お、従来と同一構成については、同一付号を付してその
詳細な説明を省略する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of a scroll compressor according to the present invention will be described.
Will be described with reference to the drawings. In addition, about the same structure as a conventional, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.
【００２０】図１は本発明の第１の実施例におけるスク
ロール圧縮機の断面図である。また図２は図１のＩ−Ｉ
線断面図で、図３は図２のII−II線断面図でありフォー
ミング時の油の流れを示したものである。FIG. 1 is a sectional view of a scroll compressor according to a first embodiment of the present invention. FIG. 2 is a sectional view taken along the line II of FIG.
FIG. 3 is a sectional view taken along line II-II of FIG. 2 and shows the flow of oil during forming.
【００２１】図１において、１は固定スクロール、２は
旋回スクロール、３は吸入口（吸入室）、４は吐出ポー
ト、５は圧縮室、６は主軸、７は吸入口７ａを有し、主
軸６下端と一定隙間を持って主軸下端部を覆うように装
着されたオイルキャップ、８，９は軸受けフレーム、１
０はモータ・ロータ、１１はモータ・ステータ、１２は
シェル、１３はオルダム継手、１４は邪魔板、１５はシ
ェル１２底部に設けた油溜で潤滑油１５ａがたまってい
る。In FIG. 1, 1 is a fixed scroll, 2 is an orbiting scroll, 3 is a suction port (suction chamber), 4 is a discharge port, 5 is a compression chamber, 6 is a main shaft, 7 is a main shaft, and 7 is a main shaft. 6, an oil cap mounted so as to cover the lower end of the spindle with a certain gap from the lower end, 8, 9 are bearing frames, 1
Numeral 0 denotes a motor rotor, 11 denotes a motor / stator, 12 denotes a shell, 13 denotes an Oldham coupling, 14 denotes a baffle plate, and 15 denotes an oil reservoir provided at the bottom of the shell 12 in which lubricating oil 15a is accumulated.
【００２２】１６は吸入管、１７は吐出管、１８は主軸
６に偏心して設けられた旋回スクロール軸２ｂと回転自
在に嵌入された旋回軸受、１９は主軸６上部の大径部６
ａを支承する第１の主軸受、２０は主軸６下部の小径部
６ｂを支承する第２の主軸受、２１は旋回スクロール２
の下端の軸方向から支承する第１のスラスト軸受、２２
は主軸６の大径部６ａと小径部６ｂ間の段部６ｃを軸方
向から支承する第２のスラスト軸受、２３は主軸６下端
に開口部２３ａを有し、主軸６内にその軸心より偏心し
て設けられた給油口で、各軸受１８、２０部へ連通して
いる。Reference numeral 16 denotes a suction pipe, 17 denotes a discharge pipe, 18 denotes a revolving bearing rotatably fitted to a revolving scroll shaft 2b provided eccentrically on the main shaft 6, and 19 denotes a large diameter portion 6 on the upper portion of the main shaft 6.
a is a first main bearing, 20 is a second main bearing that supports the small diameter portion 6b below the main shaft 6, and 21 is the orbiting scroll 2.
Thrust bearing, which is supported from the axial direction at the lower end of the first thrust bearing, 22
Is a second thrust bearing that axially supports a step 6c between the large-diameter portion 6a and the small-diameter portion 6b of the main shaft 6, and 23 has an opening 23a at the lower end of the main shaft 6, and is provided inside the main shaft 6 from its axial center. An eccentric oil supply port communicates with each of the bearings 18 and 20.
【００２３】２４は主軸６内に設けられたガス抜き穴、
２５，２６は潤滑油経路用の返油穴、２７，２８は吸入
ガス経路用の連通口である。24 is a gas vent hole provided in the main shaft 6,
25 and 26 are oil return holes for a lubricating oil path, and 27 and 28 are communication ports for a suction gas path.
【００２４】４０は、主軸６の下端部において油溜１５
の上方を覆う潤滑油量保持装置である。潤滑油量保持装
置４０は、中央部に主軸６を貫通させる貫通穴４１、外
周部の下面側にアール形状を有した潤滑油分離面４２、
潤滑油分離面４２とシェル１２との間に形成される返油
通路４３から構成されている。４４は、潤滑油量保持装
置４０をシェル１２内に支持する潤滑油量保持装置支持
板である。Reference numeral 40 denotes an oil sump 15 at the lower end of the main shaft 6.
Is a lubricating oil amount holding device that covers the upper part of the device. The lubricating oil amount holding device 40 includes a through hole 41 through which the main shaft 6 penetrates in a central portion, a lubricating oil separating surface 42 having a round shape on a lower surface side of an outer peripheral portion,
It comprises an oil return passage 43 formed between the lubricating oil separating surface 42 and the shell 12. Reference numeral 44 denotes a lubricating oil amount holding device support plate that supports the lubricating oil amount holding device 40 in the shell 12.
【００２５】以上のように構成されたスクロール圧縮機
について以下その動作を説明する。冷媒ガスの主となる
流通空間で、かつ冷媒ガスの流速が著しく低下し、冷媒
と潤滑油１５ａとの分離が行われるシェル１２下方で
は、冷媒ガスがシェル１２内壁、モータ・ステータ１１
表面、潤滑油分離面４２を通過する際、冷媒と潤滑油１
５ａとの分離が行われ一端潤滑油分離面４２上面にたま
る。The operation of the scroll compressor configured as described above will be described below. In the main flow space of the refrigerant gas, and below the shell 12 where the flow rate of the refrigerant gas is remarkably reduced and the refrigerant and the lubricating oil 15a are separated, the refrigerant gas flows through the inner wall of the shell 12 and the motor / stator 11.
When passing through the surface, the lubricating oil separating surface 42, the refrigerant and the lubricating oil 1
The lubricating oil is separated from the lubricating oil 5a and once accumulates on the upper surface of the lubricating oil separating surface 42.
【００２６】一方、前記潤滑油分離面４２上面での冷媒
ガスの流れは、シェル１２内壁とモータ・ステータ１１
との隙間を通過する上方から下方への流れと、主軸６及
びモータ・ロータ１０による遠心力によりシェル１２内
壁の下方に流れようとする。On the other hand, the flow of the refrigerant gas on the upper surface of the lubricating oil separating surface 42 depends on the inner wall of the shell 12 and the motor / stator 11.
And the centrifugal force of the main shaft 6 and the motor / rotor 10 to flow below the inner wall of the shell 12.
【００２７】そのため、潤滑油分離面４２上面に一端た
まった潤滑油１５ａは、シェル１２内壁に沿って設けら
れている潤滑油分離面４２とシェル１２との間に形成さ
れる返油通路４３に向かって移動し、油流１５内に返油
され、圧縮機外への油の持ち出しを防ぐことができる。Therefore, the lubricating oil 15 a, which has accumulated on the upper surface of the lubricating oil separating surface 42, is transferred to the lubricating oil return passage 43 formed between the lubricating oil separating surface 42 provided along the inner wall of the shell 12 and the shell 12. The oil moves toward the oil flow 15 and is returned to the oil flow 15 to prevent the oil from being taken out of the compressor.
【００２８】また、潤滑油分離面４２とシェル１２との
間に形成される返油通路４３は、シェル１２内壁に沿っ
て設けられているため、シェル１２内壁で分離された潤
滑油１５ａを潤滑油分離面４２にためると同時に、直接
シェル１２内壁を伝わって油溜１５に返油することがで
き、効率よく油溜１５に潤滑油１５ａの返油を行うこと
ができる。Since the oil return passage 43 formed between the lubricating oil separating surface 42 and the shell 12 is provided along the inner wall of the shell 12, the lubricating oil 15a separated on the inner wall of the shell 12 is lubricated. At the same time as the oil accumulates on the oil separating surface 42, the oil can be returned to the oil reservoir 15 by directly traveling along the inner wall of the shell 12, and the lubricating oil 15a can be efficiently returned to the oil reservoir 15.
【００２９】また、油溜１５内の潤滑油１５ａ中に冷媒
が寝込んだ状態の起動時などでフォーミングが生じた場
合、潤滑油１５ａが圧縮機外へ持ち出される恐れがある
が、油溜１５から潤滑油量保持装置４０上面への油の流
路となる潤滑油分離面４２とシェル１２との間に形成さ
れる返油通路４３では、潤滑油分離面４２の外周部に設
けられているアール形状の影響により、潤滑油分離面４
２上面から油溜１５へは潤滑油１５ａが流れやすく、油
溜１５から潤滑油分離面４２へは流路抵抗により流れに
くいためフォーミング時に、潤滑油１５ａが圧縮機外へ
持ち出されることはない。Further, when forming occurs at the time of starting, for example, when the refrigerant is laid in the lubricating oil 15a in the oil reservoir 15, the lubricating oil 15a may be taken out of the compressor. In an oil return passage 43 formed between the shell 12 and the lubricating oil separating surface 42 serving as an oil flow path to the upper surface of the lubricating oil amount holding device 40, an R is provided on the outer peripheral portion of the lubricating oil separating surface 42. Due to the shape, lubricating oil separation surface 4
2. Since the lubricating oil 15a easily flows from the upper surface to the oil reservoir 15, and hardly flows from the oil reservoir 15 to the lubricating oil separating surface 42 due to flow path resistance, the lubricating oil 15a is not taken out of the compressor during forming.
【００３０】更に、潤滑油量保持装置は可動体を有して
いないため、従来のスクロール圧縮機での、圧縮機運転
中の圧力脈動により、逆止弁３１が開閉を繰り返し、仕
切板３０に接触、非接触をすることによる異常音の発生
を防ぐことができる。Further, since the lubricating oil amount holding device does not have a movable body, the check valve 31 repeatedly opens and closes due to the pressure pulsation of the conventional scroll compressor during the operation of the compressor. It is possible to prevent the occurrence of abnormal noise due to contact and non-contact.
【００３１】[0031]
【発明の効果】以上説明したように本発明によるスクロ
ール圧縮機は、中央部に主軸を貫通させる貫通穴、外周
部の下面側にアール形状を有した潤滑油分離面、潤滑油
分離面とシェルとの間に形成される返油通路から構成さ
れる潤滑油量保持装置を備えることにより、シェル内で
冷媒ガス中から分離された潤滑油を再び冷媒と混合する
前に効率よく油溜に返油することができる。As described above, the scroll compressor according to the present invention has a through hole through which the main shaft passes through the center, a lubricating oil separating surface having a round shape on the lower surface side of the outer peripheral portion, a lubricating oil separating surface and the shell. And a lubricating oil amount holding device formed of an oil return passage formed between the lubricating oil and the refrigerant. The lubricating oil separated from the refrigerant gas in the shell is efficiently returned to the oil reservoir before being mixed with the refrigerant again. Oil can be.
【００３２】また、潤滑油量保持装置は可動体を有して
いないため、従来のスクロール圧縮機での、圧縮機運転
中の圧力脈動により、逆止弁が開閉を繰り返し、仕切板
３０に接触、非接触をすることによる異常音の発生を防
ぐことができる。Further, since the lubricating oil amount holding device does not have a movable body, the check valve repeatedly opens and closes due to pressure pulsation during the operation of the conventional scroll compressor, and comes into contact with the partition plate 30. The occurrence of abnormal sound due to non-contact can be prevented.
【００３３】更に、起動時のフォーミング減少による潤
滑油の持ち出しについても、潤滑油分離面の外周部に設
けたアール形状による流路抵抗の作用により抑えること
ができ、潤滑油附則による摺動部の損傷あるいは焼きつ
けといった事故を抑制するものである。Further, the take-out of the lubricating oil due to the reduction of the forming at the time of starting can be suppressed by the action of the flow path resistance by the round shape provided on the outer peripheral portion of the lubricating oil separating surface. It suppresses accidents such as damage or burning.
【図１】本発明によるスクロール圧縮機の第１の実施例
の断面図FIG. 1 is a sectional view of a first embodiment of a scroll compressor according to the present invention.
【図２】同実施例のスクロール圧縮機の図１のＩ−Ｉ線
断面図FIG. 2 is a cross-sectional view of the scroll compressor according to the embodiment taken along line II of FIG. 1;
【図３】同実施例のスクロール圧縮機の図２のII−II線
断面図FIG. 3 is a sectional view of the scroll compressor according to the embodiment, taken along the line II-II in FIG. 2;
【図４】従来のスクロール圧縮機の断面図FIG. 4 is a cross-sectional view of a conventional scroll compressor.
【図５】従来のスクロール圧縮機のシェル下部断面図FIG. 5 is a sectional view of a lower portion of a shell of a conventional scroll compressor.
１ 固定スクロール ２ 旋回スクロール ５ 圧縮室 ６ 主軸 ７ａ 吸入口 ８ フレーム ９ フレーム １０ モータ・ロータ １１ モータ・ステータ １２ シェル １３ オルダム継手 １５ 油溜 ２３ 給油口 ４０ 潤滑油量保持装置 ４１ 貫通穴 ４２ 潤滑油分離面 ４３ 返油通路 ４４ 潤滑油量保持装置支持板 REFERENCE SIGNS LIST 1 fixed scroll 2 orbiting scroll 5 compression chamber 6 main shaft 7 a suction port 8 frame 9 frame 10 motor rotor 11 motor / stator 12 shell 13 Oldham coupling 15 oil reservoir 23 oil supply port 40 lubricating oil amount holding device 41 through hole 42 lubricating oil separation Surface 43 Oil return passage 44 Lubricating oil amount holding device support plate
Claims (1)
いに組み合わせることにより前記渦巻間に圧縮室を形成
する固定スクロール及び旋回スクロールと、前記旋回ス
クロールに旋回運動を与え、前記圧縮室内に吸入された
冷媒ガスを圧縮させる主軸及びオルダム継手と、前記主
軸を回転可能に支承する主軸受を有するフレームと、前
記フレームの下方に設けられ前記主軸を回転させるモー
タと、前記主軸下方に設けられた潤滑油を溜める油溜
と、前記固定スクロール及び旋回スクロールを上部に前
記モータを下部に位置させて前記主軸の下端を油溜内に
浸漬するように収納するシェルと、前記主軸の回転また
は差圧により前記油溜内の潤滑油を前記主軸下端に形成
された吸入口を介して前記主軸受部に供給する給油口
と、中央部に前記主軸を貫通させる貫通穴と、外周部の
下面側にアール形状を有した潤滑油分離面と、前記潤滑
油分離面と前記シェルとの間に形成される返油通路から
構成されている潤滑油量保持装置と、前記潤滑油量保持
装置をシェル内に支持する潤滑油量保持装置支持板から
なるスクロール圧縮機。1. A fixed scroll and an orbiting scroll each having a spiral and combining the spirals with each other to form a compression chamber between the spirals, and imparting an orbiting motion to the orbiting scroll and being sucked into the compression chamber. A main shaft and an Oldham coupling for compressing the refrigerant gas, a frame having a main bearing rotatably supporting the main shaft, a motor provided below the frame to rotate the main shaft, and a lubrication provided below the main shaft. An oil reservoir for storing oil, a shell for storing the fixed scroll and the orbiting scroll at an upper portion, the motor at a lower portion, and immersing a lower end of the spindle in the oil reservoir, and a rotation or a differential pressure of the spindle. An oil supply port for supplying lubricating oil in the oil reservoir to the main bearing portion through a suction port formed at a lower end of the main shaft, and a main shaft at a central portion. A lubricating oil amount holding comprising a through hole to be penetrated, a lubricating oil separating surface having a round shape on the lower surface side of the outer peripheral portion, and an oil return passage formed between the lubricating oil separating surface and the shell. A scroll compressor comprising a device and a lubricating oil amount holding device support plate for supporting the lubricating oil amount holding device in a shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19872796A JPH1047283A (en) | 1996-07-29 | 1996-07-29 | Scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19872796A JPH1047283A (en) | 1996-07-29 | 1996-07-29 | Scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1047283A true JPH1047283A (en) | 1998-02-17 |
Family
ID=16395990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19872796A Pending JPH1047283A (en) | 1996-07-29 | 1996-07-29 | Scroll compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1047283A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7748969B2 (en) | 2005-12-30 | 2010-07-06 | Lg Electronics Inc. | Foam reduction device for a compressor |
| CN102261552A (en) * | 2011-04-28 | 2011-11-30 | 北京科技大学 | Lubricating device for traction motor bearing |
| US8162636B2 (en) | 2008-05-16 | 2012-04-24 | Kabushiki Kaisha Toyota Jidoshokki | Scroll compressor having partition wall in oil reservoir |
| WO2023110623A1 (en) * | 2021-12-17 | 2023-06-22 | Danfoss Commercial Compressors | A compressor scroll provided with an oil sump fairing |
-
1996
- 1996-07-29 JP JP19872796A patent/JPH1047283A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7748969B2 (en) | 2005-12-30 | 2010-07-06 | Lg Electronics Inc. | Foam reduction device for a compressor |
| US8162636B2 (en) | 2008-05-16 | 2012-04-24 | Kabushiki Kaisha Toyota Jidoshokki | Scroll compressor having partition wall in oil reservoir |
| CN102261552A (en) * | 2011-04-28 | 2011-11-30 | 北京科技大学 | Lubricating device for traction motor bearing |
| WO2023110623A1 (en) * | 2021-12-17 | 2023-06-22 | Danfoss Commercial Compressors | A compressor scroll provided with an oil sump fairing |
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