JP5487019B2 - Variable capacity compressor - Google Patents

Variable capacity compressor Download PDF

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Publication number
JP5487019B2
JP5487019B2 JP2010140145A JP2010140145A JP5487019B2 JP 5487019 B2 JP5487019 B2 JP 5487019B2 JP 2010140145 A JP2010140145 A JP 2010140145A JP 2010140145 A JP2010140145 A JP 2010140145A JP 5487019 B2 JP5487019 B2 JP 5487019B2
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Prior art keywords
communication hole
disposed
storage chamber
oil
variable capacity
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JP2012002196A (en
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勉 石川
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Sanden Holdings Corp
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Sanden Corp
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Priority to JP2010140145A priority Critical patent/JP5487019B2/en
Priority to DE112011102085T priority patent/DE112011102085T5/en
Priority to CN2011800293810A priority patent/CN102947591A/en
Priority to PCT/JP2011/062212 priority patent/WO2011162072A1/en
Priority to US13/805,800 priority patent/US20130101443A1/en
Publication of JP2012002196A publication Critical patent/JP2012002196A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/18—Lubricating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1036—Component parts, details, e.g. sealings, lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1036—Component parts, details, e.g. sealings, lubrication
    • F04B27/109—Lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/02—Lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/02—Lubrication
    • F04B39/0207—Lubrication with lubrication control systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/02—Lubrication
    • F04B39/0284—Constructional details, e.g. reservoirs in the casing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/04—Measures to avoid lubricant contaminating the pumped fluid

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Compressor (AREA)

Description

本発明は、冷媒に含有されるオイルによって被潤滑部を潤滑する可変容量圧縮機に関し、特に、被潤滑部へのオイル供給量を調整する装置に関する。   The present invention relates to a variable capacity compressor that lubricates a lubricated part with oil contained in a refrigerant, and more particularly to an apparatus that adjusts the amount of oil supplied to the lubricated part.

車両のヒートポンプ式空調装置等において使用される可変容量圧縮機においては、圧縮機の摺動部等の被潤滑部の潤滑を、圧縮機内を循環する冷媒に含有されるオイルを供給して行っている。
しかし、圧縮機運転中に圧縮機内のクランク室にオイルが過度に貯留されてしまう場合がある。クランク室に過度にオイルが貯留されてしまうとクランク室内の回転体が低速時は問題無いが、高速で回転した場合オイルを高速で攪拌することとなり、その攪拌による摩擦熱が発生する。その摩擦熱でオイルやクランク室内は著しく高温となり、圧縮機全体も高温になってしまう。高温になると樹脂材料やゴム材料部材の耐久性低下を招く。 In variable capacity compressors used in vehicle heat pump air conditioners and the like, lubrication of lubricated parts such as sliding parts of the compressor is performed by supplying oil contained in refrigerant circulating in the compressor. Yes.
However, oil may be excessively stored in the crank chamber in the compressor during compressor operation. If the oil is excessively stored in the crank chamber, there is no problem when the rotating body in the crank chamber is at a low speed. However, when the oil rotates at a high speed, the oil is stirred at a high speed, and frictional heat is generated by the stirring. The frictional heat causes the oil and crank chamber to become extremely hot, and the entire compressor also becomes hot. When the temperature is high, the durability of the resin material or rubber material member is lowered.

このため、特許文献１では、圧縮機内部空間（クランク室）と連通させて圧縮機外部にオイルの貯留室を配設し、回転部材の高速回転時にオイルに作用する遠心力を大きくして、過剰なオイルをオイル貯留室に貯留することにより、摩擦熱抑制を図った技術が開示されている。   For this reason, in Patent Document 1, an oil storage chamber is provided outside the compressor in communication with the compressor internal space (crank chamber), and the centrifugal force acting on the oil during high speed rotation of the rotating member is increased. A technique for suppressing frictional heat by storing excess oil in an oil storage chamber is disclosed.

特開２００９−１５０２６１号公報JP 2009-150261 A

しかし、特許文献１に開示された技術では、オイル導入通路より上位の貯留室内にオイルが貯留すると、貯留室内に閉塞された冷媒が加圧されてオイルが貯留室にスムーズに流入しにくく、貯留室に十分な量のオイルを貯留することが困難な構造であった。
本発明は、このような従来の課題に着目してなされたもので、可変容量圧縮機において圧縮機内の回転部材の回転速度に応じて被潤滑部へのオイル供給量を適量に調整することにより、潤滑性能の確保、各部材の耐久性を確保することを目的とする。 However, in the technique disclosed in Patent Document 1, when oil is stored in the storage chamber above the oil introduction passage, the refrigerant blocked in the storage chamber is pressurized and the oil does not easily flow into the storage chamber. It was difficult to store a sufficient amount of oil in the chamber.
The present invention has been made paying attention to such a conventional problem, and in a variable capacity compressor, by adjusting the oil supply amount to the lubricated part to an appropriate amount according to the rotational speed of the rotating member in the compressor. It aims at ensuring lubrication performance and ensuring the durability of each member.

この目的を達成するため、本発明は、
円筒状収納部材と、該円筒状収納部材の中心軸周りに非水平面内を回転駆動される回転部材と、前記円筒状収納部材の中心軸外側周囲に形成された複数のシリンダ内に、前記中心軸と平行な軸方向に往復動して冷媒を吸入／吐出する複数のピストンと、前記回転部材の回転運動を前記ピストンの往復動に変換する運動方向変換機構と、前記運動方向変換機構における回転部材回転量に対するピストン往復動の変換量を制御して冷媒吐出量を制御する制御機構と、を含んで構成される可変容量圧縮機において、以下の構成を備える。 In order to achieve this object, the present invention provides:
A cylindrical storage member; a rotation member that is driven to rotate in a non-horizontal plane around a central axis of the cylindrical storage member; and a plurality of cylinders formed around the outer side of the central axis of the cylindrical storage member. A plurality of pistons that reciprocate in an axial direction parallel to the shaft to suck / discharge refrigerant, a movement direction conversion mechanism that converts the rotational movement of the rotating member into a reciprocating movement of the piston, and rotation in the movement direction conversion mechanism A variable displacement compressor that includes a control mechanism that controls the amount of piston reciprocation relative to the amount of rotation of the member to control the refrigerant discharge amount includes the following configuration.

前記円筒状収納部材の前記回転部材を収容する内側空間にあって前記回転部材の回転軌跡の外側に、遠心力が作用する冷媒中のオイルを受けるオイル受け部が配設される。
前記円筒状収納部材の内外を貫通して形成され、前記オイル受け部に対し、前記回転部材の回転方向上流側に近接する第１の連通孔と、該第１の連通孔とは前記回転方向を離して配置した第２の連通孔と、を含む複数の連通孔が配設される。 An oil receiving portion for receiving the oil in the refrigerant to which the centrifugal force acts is disposed outside the rotation locus of the rotating member in the inner space that houses the rotating member of the cylindrical storage member.
A first communication hole that is formed through the inside and outside of the cylindrical storage member and is close to the oil receiving portion on the upstream side in the rotation direction of the rotation member, and the first communication hole is the rotation direction. A plurality of communication holes including a second communication hole disposed apart from each other are disposed.

前記複数の連通孔を介して前記円筒状収納部材の内側空間と連通するように、前記円筒状収納部材の外側に形成され、冷媒中のオイルを貯留する貯留室が配設される。   A storage chamber for storing oil in the refrigerant is provided outside the cylindrical storage member so as to communicate with the inner space of the cylindrical storage member via the plurality of communication holes.

円筒状収納部材の内側空間内で、回転部材の回転により、冷媒と共に攪拌されて遠心力が作用するオイルは、オイル受け部で受け止められ、該受け止められたオイルは近接する第１の連通孔を介して貯留室内に流入する。
この際、複数の連通孔のうち、上側に位置する連通孔を介してオイル貯留室内の冷媒が円筒状収納部材の内側空間に排出されて貯留室内の加圧が抑制されることにより、オイルはスムーズに貯留室内に流入する。 In the inner space of the cylindrical storage member, the oil that is stirred together with the refrigerant and subjected to centrifugal force by the rotation of the rotating member is received by the oil receiving portion, and the received oil passes through the first communication hole that is close. Through the storage chamber.
At this time, among the plurality of communication holes, the refrigerant in the oil storage chamber is discharged into the inner space of the cylindrical storage member through the communication hole located on the upper side, and the pressurization in the storage chamber is suppressed, so that the oil Smoothly flows into the storage chamber.

そして、第１の連通孔から流入する（または流入しようとする）オイル量と、貯留室内に貯留されたオイルの自重によっていずれかの連通孔から流出する（または流出しようとする）オイル量とが平衡した状態で、貯留室に過剰なオイルを貯留することができる。
ここで、回転部材の高速回転時は、貯留室に多くの過剰オイルを貯留して回転部材で攪拌されるオイル量を減少することにより、該オイル攪拌による摩擦熱の発生を抑制して潤滑性能、耐久性を確保することができる。 The amount of oil flowing in (or about to flow in) from the first communication hole and the amount of oil flowing out (or about to flow out) from any of the communication holes due to the weight of the oil stored in the storage chamber In an equilibrium state, excess oil can be stored in the storage chamber.
Here, during high-speed rotation of the rotating member, a large amount of excess oil is stored in the storage chamber and the amount of oil stirred by the rotating member is reduced, thereby suppressing the generation of frictional heat due to the oil stirring and lubricating performance. , Durability can be ensured.

一方、回転部材の低速時には、オイルに作用する遠心力の低下により貯留室内へのオイルの貯留が抑制され、円筒状収納部材の内側空間内に留まるオイル量を増大することができ、圧縮機内の被潤滑部に供給されるオイル量を多くして良好な潤滑性能を確保することができる。   On the other hand, when the rotating member is at a low speed, the reduction of the centrifugal force acting on the oil suppresses the oil from being stored in the storage chamber, so that the amount of oil remaining in the inner space of the cylindrical storage member can be increased. A good lubricating performance can be ensured by increasing the amount of oil supplied to the portion to be lubricated.

本発明に係る第１の実施形態の可変容量圧縮機を示す縦断面図。1 is a longitudinal sectional view showing a variable capacity compressor according to a first embodiment of the present invention. 図１のＦ−Ｆ矢視断面図。FIG. 2 is a cross-sectional view taken along line FF in FIG. 同上圧縮機を前方から視た図。The figure which looked at the compressor same as the above from the front. 図３のＣ−Ｃ矢視断面図。CC sectional view taken on the line of FIG. 第１の実施形態同様、上方から下方に向かって回転する側に貯留室を設ける別の例を示す第２の実施形態及び第３の実施形態を示す模式図。The schematic diagram which shows 2nd Embodiment and 3rd Embodiment which show another example which provides a storage chamber in the side rotated toward the downward direction from upper direction like 1st Embodiment. 下方から上方に向かって回転する側に貯留室を設ける第４〜第６の実施形態を示す模式図。The schematic diagram which shows the 4th-6th embodiment which provides a storage chamber in the side rotated upwards from the downward direction. 下方から上方に向かって回転する側に貯留室を設ける異なる第４〜第６の実施形態とは形態の第７の実施形態を示す模式図。Schematic diagram showing a seventh embodiment different from the fourth to sixth embodiments in which a storage chamber is provided on the side rotating from the lower side to the upper side. 複数の貯留室を設ける第８の実施形態を示す模式図。The schematic diagram which shows 8th Embodiment which provides a some storage chamber. 通しボルトとは別にオイル受け部を設ける第９の実施形態を示す縦断面図。The longitudinal cross-sectional view which shows 9th Embodiment which provides an oil receiving part separately from a through bolt. 異なるタイプの可変容量圧縮機に適用した第１０の実施形態を示す縦断面図。The longitudinal cross-sectional view which shows 10th Embodiment applied to the variable displacement compressor of a different type.

以下に、本発明の実施の形態を、図面を参照して説明する。
図１〜図４は、本発明を適用する可変容量圧縮機の縦断面図を示す。
車両用空調装置に使用される可変容量圧縮機１００は、中心軸の外側周囲に複数（本実施形態では６個）のシリンダ１０１ａを備えたシリンダブロック１０１と、シリンダブロック１０１の一端に設けられたフロントハウジング１０２と、シリンダブロック１０１の他端にバルブプレート１０３を介して設けられたリアハウジング１０４とを備えている。 Embodiments of the present invention will be described below with reference to the drawings.
1 to 4 are longitudinal sectional views of a variable capacity compressor to which the present invention is applied.
A variable capacity compressor 100 used in a vehicle air conditioner is provided at one end of a cylinder block 101 having a plurality of (six in this embodiment) cylinders 101a around an outer periphery of a central axis. A front housing 102 and a rear housing 104 provided at the other end of the cylinder block 101 via a valve plate 103 are provided.

これら円筒状収納部材を構成するフロントハウジング１０２、シリンダブロック１０１、バルブプレート１０３及びリアハウジング１０４は、これらの周縁部を貫通する複数本（本実施形態では６本）の通しボルト２０１によって、相互に締結されている。
シリンダブロック１０１と、フロントハウジング１０２とによって規定されるクランク室（円筒状収納部材の内側空間）１０５内を横断して、駆動軸１０６が設けられ、その中心部の周囲には、斜板１０７が配置されている。 The front housing 102, the cylinder block 101, the valve plate 103, and the rear housing 104 constituting these cylindrical storage members are mutually connected by a plurality of (six in this embodiment) through bolts 201 penetrating these peripheral portions. It is concluded.
A drive shaft 106 is provided across the crank chamber (inner space of the cylindrical storage member) 105 defined by the cylinder block 101 and the front housing 102, and a swash plate 107 is provided around the center thereof. Has been placed.

斜板１０７は、駆動軸１０６に固着されたロータ１０８と連結部１０９を介して結合し、駆動軸１０６に沿ってその傾斜角が可変に構成されている。ロータ１０８と斜板１０７との間には斜板１０７をその最小傾角側に向けて付勢するコイルばね１１０が装着されており、また、斜板１０７を挟んで反対側には斜板１０７をその傾斜角を増大する方向に向けて付勢するコイルばね１１１が装着されている。   The swash plate 107 is coupled to a rotor 108 fixed to the drive shaft 106 via a connecting portion 109, and the inclination angle of the swash plate 107 is variable along the drive shaft 106. A coil spring 110 is mounted between the rotor 108 and the swash plate 107 to urge the swash plate 107 toward the minimum inclination side, and the swash plate 107 is disposed on the opposite side of the swash plate 107. A coil spring 111 that biases the inclination angle toward the increasing direction is mounted.

駆動軸１０６の一端は、フロントハウジング１０２の外側に突出したボス部１０２ａ内を貫通して、外側まで延在しており、図示しないエンジンの圧縮機駆動ベルトに係合するプーリ１３１に、電磁クラッチ１３２を介して断接自由に連結されている。
駆動軸１０６とボス部１０２ａとの間には、軸封装置１１２が挿入され、圧縮機内部と外部とを遮断している。 One end of the drive shaft 106 penetrates through a boss portion 102a protruding to the outside of the front housing 102 and extends to the outside, and is connected to a pulley 131 that engages with a compressor drive belt (not shown) of the electromagnetic clutch. It is connected through a connection 132 freely.
A shaft seal device 112 is inserted between the drive shaft 106 and the boss portion 102a to block the inside and outside of the compressor.

シリンダ１０１ａ内には、ピストン１１７が往復動自在に挿入されており、ピストン１１７内側の一端のくぼみ１１７ａ内には、斜板１０７の外周部の周囲が収容され、斜板１０７の外周両側面に摺接する一対のシュー１１８を介して、ピストン１１７と斜板１０７とが互いに連動する構成となっている。したがって、駆動軸１０６の回転によりピストン１１７がシリンダ１０１ａ内を往復動することが可能となり、これら一連の部材は、運動方向変換機構を構成している。   A piston 117 is inserted into the cylinder 101 a so as to be able to reciprocate. The periphery of the outer peripheral portion of the swash plate 107 is accommodated in a recess 117 a at one end inside the piston 117. The piston 117 and the swash plate 107 are configured to interlock with each other via a pair of shoes 118 that are in sliding contact. Therefore, the piston 117 can reciprocate in the cylinder 101a by the rotation of the drive shaft 106, and these series of members constitute a motion direction conversion mechanism.

リアハウジング１０４には、吸入室１１９及び吐出室１２０が区画形成され、吸入室１１９は、シリンダ１０１ａとは、バルブプレート１０３に設けられた連通孔１０３ａ（吸入孔）、図示しない吸入弁を介して連通し、吐出室１２０は、シリンダ１０１ａとは、図示しない吐出弁、バルブプレート１０３に設けられた連通孔１０３ｂ（吐出孔）を介して連通している。   A suction chamber 119 and a discharge chamber 120 are defined in the rear housing 104. The suction chamber 119 is connected to the cylinder 101a through a communication hole 103a (suction hole) provided in the valve plate 103 and a suction valve (not shown). The discharge chamber 120 communicates with the cylinder 101a via a discharge valve (not shown) and a communication hole 103b (discharge hole) provided in the valve plate 103.

吸入室１１９は図示しない吸入ポートを介して空調装置システム側と接続され、吐出室１２０は図示しない吐出ポートを介して空調装置システム側と接続されている。
リアハウジング１０４には容量制御弁２００が設けられている。容量制御弁２００は吐出室１２０とクランク室１０５とを連通する給気通路１２１（１２１ａ、１２１ｂ）の開度を調整し、クランク室１０５への吐出ガス導入量を制御する。また、クランク室１０５内の冷媒は、駆動軸１０６外周とベアリング１１５との隙間、空間１２２及びバルブプレート１０３に形成された開度固定の固定オリフィス１０３ｃを経由した抽気通路を介して吸入室１１９に流れる。したがって、容量制御弁２００によりクランク室１０５への吐出ガス導入量を調整してクランク室１０５の圧力を変化させることにより吐出容量を制御することができる。 The suction chamber 119 is connected to the air conditioner system side via a suction port (not shown), and the discharge chamber 120 is connected to the air conditioner system side via a discharge port (not shown).
The rear housing 104 is provided with a capacity control valve 200. The capacity control valve 200 adjusts the opening of an air supply passage 121 (121a, 121b) that communicates the discharge chamber 120 and the crank chamber 105, and controls the amount of discharge gas introduced into the crank chamber 105. In addition, the refrigerant in the crank chamber 105 enters the suction chamber 119 via a bleed passage through a clearance between the outer periphery of the drive shaft 106 and the bearing 115, a space 122 and a fixed orifice 103c formed in the valve plate 103 and having a fixed opening. Flowing. Therefore, the discharge capacity can be controlled by adjusting the discharge gas introduction amount into the crank chamber 105 by the capacity control valve 200 and changing the pressure in the crank chamber 105.

かかる基本的な構造を有した可変容量圧縮機１００において、クランク室１０５内の冷媒に含有されるオイルを運転状態（回転速度）に応じて適量貯留し、それによって、圧縮機１００内の被潤滑部へのオイル供給量を適正に維持する貯留室を以下のように形成する。
図２に示すように、既述した６本の通しボルト２０１のうち、真下に位置する通しボルト２０１より１本上側で、かつ斜板１０７等回転部材の回転方向（以下単に回転方向という）上流側に位置する通しボルト２０１ａに対し、その回転方向上流側に近接するフロントハウジング１０２周壁内外を貫通する第１の連通孔２０２を形成する。 In the variable capacity compressor 100 having such a basic structure, an appropriate amount of oil contained in the refrigerant in the crank chamber 105 is stored in accordance with the operation state (rotational speed), and thereby the lubrication target in the compressor 100 is stored. A storage chamber that appropriately maintains the amount of oil supplied to the section is formed as follows.
As shown in FIG. 2, of the six through bolts 201 described above, one is above the through bolt 201 positioned directly below and upstream of the rotational member (hereinafter simply referred to as the rotational direction) of the rotating member such as the swash plate 107. A first communication hole 202 penetrating the inside and outside of the peripheral wall of the front housing 102 adjacent to the upstream side in the rotation direction is formed with respect to the through bolt 201a located on the side.

また、前記通しボルト２０１ａより１本上側で、かつ回転方向上流側に位置する通しボルト２０１ｂに対し、その回転方向下流側に近接するフロントハウジング１０２周壁内外を貫通する第２の連通孔２０３を形成する。
なお、これら第１の連通孔２０２及び第２の連通孔２０３は、フロントハウジング１０２の前端部付近に形成されている。これにより、最大容量時、すなわち斜板１０７の最大傾斜時でピストン１１７の最大ストローク時でも、冷媒中のオイルがピストン１１７と干渉することなく高密度となる部位に、第１の連通孔２０２及び第２の連通孔２０３が形成される。 In addition, a second communication hole 203 is formed that penetrates the inside and outside of the peripheral wall of the front housing 102 adjacent to the downstream side in the rotational direction with respect to the through bolt 201b positioned one upstream from the through bolt 201a and upstream in the rotational direction. To do.
The first communication hole 202 and the second communication hole 203 are formed near the front end portion of the front housing 102. As a result, even when the maximum capacity, that is, when the swash plate 107 is at the maximum tilt and the piston 117 is at the maximum stroke, the first communication hole 202 and the oil in the refrigerant become dense without interfering with the piston 117. A second communication hole 203 is formed.

そして、フロントハウジング１０２の周壁を、前記第１の連通孔２０２及び第２の連通孔２０３を内側に含んで矩形状に取り囲む突出壁１０１ｂを形成し、該突出壁１０１ｂの外側開口端をカバー２０４を当接させて密閉し、矩形状の４個の角部をボルト２０５によって締結する。
これにより、フロントハウジング１０２の周壁、前記突出壁１０１ｂ及びカバー２０４で囲まれた内側空間にオイルの貯留室２０６が形成される。 Then, a protruding wall 101b that surrounds the peripheral wall of the front housing 102 in a rectangular shape including the first communication hole 202 and the second communication hole 203 inside is formed, and the outer opening end of the protruding wall 101b is covered with the cover 204. Are brought into contact with each other and sealed, and four rectangular corners are fastened by bolts 205.
Thus, an oil storage chamber 206 is formed in the inner space surrounded by the peripheral wall of the front housing 102, the protruding wall 101 b and the cover 204.

次に、前記貯留室２０６の作用を説明する。
可変圧縮機１００の駆動源であるエンジンあるいはモータの回転速度に応じたロータ１０８及びロータ１０８に連結する斜板１０７等の回転部材の回転により、クランク室１０５内の冷媒もクランク室１０５内を回転し、冷媒に含まれるオイルが回転遠心力を受ける。 Next, the operation of the storage chamber 206 will be described.
The refrigerant in the crank chamber 105 also rotates in the crank chamber 105 by the rotation of the rotating member such as the rotor 108 and the swash plate 107 connected to the rotor 108 according to the rotational speed of the engine or motor that is the driving source of the variable compressor 100. Then, the oil contained in the refrigerant receives a rotational centrifugal force.

遠心力を受けたオイルはクランク室１０５内の外周側に沿って回転しつつ、通しボルト２０１の上流側に当たって受け止められ、特に、通しボルト２０１ａで受け止めたオイルは、上流側に近接する第１の連通孔２０２を通って貯留室２０６内に流入する。このように、本実施形態では、通しボルト２０１ａのクランク室１０５内に露出する中間部分がオイル受け部を構成する。   The oil subjected to the centrifugal force rotates along the outer peripheral side in the crank chamber 105 and is received by the upstream side of the through-bolt 201. In particular, the oil received by the through-bolt 201a is the first adjacent to the upstream side. It flows into the storage chamber 206 through the communication hole 202. Thus, in this embodiment, the intermediate part exposed in the crank chamber 105 of the through-bolt 201a comprises an oil receiving part.

そして、回転速度が低速でオイルに作用する遠心力が所定値以下であるときは、貯留室２０６に流入したオイルの液面が第１の連通孔２０２に達すると、貯留室２０６への流入量と貯留室２０６からの流出量とがバランスして、貯留室２０６への貯留を抑制できる。
一方、他の通しボルト２０１で受け止められたオイルは遠心力相当の受け止め量に達すると、それ以上のオイルは自重で落下ないしフロントハウジング１０２内壁を伝って流下し、クランク室１０５の底部に溜まる。 When the rotational speed is low and the centrifugal force acting on the oil is less than or equal to a predetermined value, when the oil level flowing into the storage chamber 206 reaches the first communication hole 202, the amount of flow into the storage chamber 206 And the amount of outflow from the storage chamber 206 are balanced, and storage in the storage chamber 206 can be suppressed.
On the other hand, when the oil received by the other through-bolts 201 reaches a receiving amount corresponding to the centrifugal force, the more oil falls by its own weight or flows down along the inner wall of the front housing 102 and accumulates at the bottom of the crank chamber 105.

低速回転時には、上記のように、貯留室２０６内に貯留されるオイル量は少なく、大部分のオイルがクランク室１０５内に留められる。
低速時には、被潤滑部となる斜板１０７等の回転部材やピストン１１７等の摺動部で油膜切れの発生傾向が高く、潤滑に必要なオイル量が増大するが、上記のようにクランク室１０５内に多くのオイルが留まり、斜板１０７等の回転部材によってオイルを掻き上げて十分な量のオイルを被潤滑部へ供給することにより、油膜切れを防止して良好な潤滑性能を確保することができる。 During low-speed rotation, the amount of oil stored in the storage chamber 206 is small as described above, and most of the oil is retained in the crank chamber 105.
At low speed, the oil film is more likely to be cut off at the rotating member such as the swash plate 107 and the sliding portion such as the piston 117 that are to be lubricated, and the amount of oil necessary for lubrication increases. A large amount of oil stays inside, and the oil is scraped up by a rotating member such as the swash plate 107 and a sufficient amount of oil is supplied to the lubricated part, thereby preventing oil film breakage and ensuring good lubricating performance. Can do.

また、斜板１０７等の回転部材の回転によりオイルを含む冷媒が攪拌されることにより摩擦熱を生じるが、低速時には発熱量が十分低く抑えられるので、圧縮機への熱の影響は無視できる。
回転速度が増大してオイルに作用する遠心力が増大すると、通しボルト２０１ａの上流側に受け止められているオイルに遠心力を強化されたオイルが当たって、オイルを貯留室２０６内に押し込む力が増大する。これにより、貯留室２０６へのオイルの流入量が増大し、貯留室２０６内に貯留されるオイルの液面は第１の連通孔２０１ａより上昇するが、一方、貯留室２０５内の貯留量が増大するとオイルの自重による液圧が増大して第１の連通孔２０１ａからのオイルの排出量も増大し、流入量と流出量とがバランスするところまで液面が上昇する。 In addition, the frictional heat is generated by stirring the refrigerant containing oil by the rotation of the rotating member such as the swash plate 107. However, since the heat generation amount is sufficiently low at low speed, the influence of the heat on the compressor can be ignored.
When the rotational speed increases and the centrifugal force acting on the oil increases, the oil received at the upstream side of the through bolt 201a hits the oil with enhanced centrifugal force, and the force that pushes the oil into the storage chamber 206 is increased. Increase. As a result, the amount of oil flowing into the storage chamber 206 increases, and the liquid level of the oil stored in the storage chamber 206 rises from the first communication hole 201a. If it increases, the fluid pressure due to the weight of the oil increases, the amount of oil discharged from the first communication hole 201a also increases, and the liquid level rises until the inflow amount and the outflow amount are balanced.

このように、回転速度が高速となるほど貯留室２０６内に貯留されるオイル量は増大する。
高速時には摺動部の油膜切れ発生傾向が低下して潤滑に必要なオイル量が減少する一方、冷媒中のオイルを攪拌することによる発熱が問題となる。しかし、高速となるほど貯留室２０６内に貯留されるオイル量を増大させてクランク室１０５内で攪拌されるオイル量を減少させることにより、発熱を抑制し、熱的影響による圧縮機各部の耐久性低下を抑制できる。 Thus, the amount of oil stored in the storage chamber 206 increases as the rotational speed increases.
At high speed, the tendency of oil film breakage at the sliding portion decreases, and the amount of oil necessary for lubrication decreases, while heat generation due to stirring of the oil in the refrigerant becomes a problem. However, by increasing the amount of oil stored in the storage chamber 206 as the speed increases, the amount of oil stirred in the crank chamber 105 is decreased, thereby suppressing heat generation and durability of each part of the compressor due to thermal effects. Reduction can be suppressed.

また、貯留室２０６内に貯留されるオイルにより貯留室２０６内の冷媒は第２の連通孔２０３からクランク室１０５内に排出される、いわゆるガス抜き機能により、貯留室２０６内にオイルをスムーズに流入させることができる。特に、本実施形態では、第２の連通孔２０３は、上側の通しボルト２０１ｂの下流側に近接して配設され、この位置には負圧を生じるため、貯留室２０６内の冷媒をクランク室１０５に排出するガス抜き作用が促進され、貯留室２０６へのオイルの流入が、よりスムーズとなる。   Further, the oil stored in the storage chamber 206 causes the refrigerant in the storage chamber 206 to be discharged into the crank chamber 105 from the second communication hole 203, so that the oil is smoothly discharged into the storage chamber 206 by a so-called gas venting function. Can flow in. In particular, in the present embodiment, the second communication hole 203 is disposed close to the downstream side of the upper through bolt 201b, and a negative pressure is generated at this position, so that the refrigerant in the storage chamber 206 is supplied to the crank chamber. The degassing action discharged to 105 is promoted, and the oil flows into the storage chamber 206 more smoothly.

上記のように高速回転時に貯留室２０６内にオイルを貯留後、回転部材の回転速度が低下するとオイルの受ける遠心力の低下により、通しボルト２０１ａに受け止められるオイル量が減少すると共に貯留室２０６への押し込み力が低下し、貯留室２０６内のオイルが自重によって第１の連通孔２０２からクランク室１０５内へ戻される。
上記第１の実施形態のように第１の連通孔２０２をクランク室１０５の最下部より上方に配設し、貯留室２０６をクランク室１０５の側方に配設することにより、オイルの貯留量を確保しやすいが、貯留室を別の位置に配設することもできる。 As described above, after oil is stored in the storage chamber 206 during high-speed rotation, if the rotational speed of the rotating member decreases, the amount of oil received by the through bolt 201a decreases due to the decrease in centrifugal force received by the oil, and the storage chamber 206 is returned to. And the oil in the storage chamber 206 is returned to the crank chamber 105 from the first communication hole 202 by its own weight.
As in the first embodiment, the first communication hole 202 is disposed above the lowermost part of the crank chamber 105, and the storage chamber 206 is disposed on the side of the crank chamber 105. However, it is also possible to arrange the storage chamber at another position.

図５〜図７は、第１の実施形態以外の貯留室２０６の各種の可能な配設位置を示す。
図５（Ａ）、（Ｂ）に示した第２，第３の実施形態では、第１の実施形態に対し、第１の連通孔２０２、第２の連通孔２０３に近接する通しボルト２０１ａ，２０１ｂが、それぞれ１本ずつ上側にあるもの、及び下側にあるものをそれぞれ示している。貯留室２０６内の冷媒を第２の連通孔２０３からクランク室１０５内に排出しつつ、通しボルト２０１ａの回転方向上流側で受け止めたオイルを第１の連通孔２０２から貯留室２０６内に流入させ、流出量と平衡する液面まで貯留することは同様である。ただし、（Ｂ）の場合は、（Ａ）に比較し、第１の連通孔２０２の下方に貯留室２０６が位置しているので、貯留室２０６にオイルが流入しやすく、流出しにくい特性となる。したがって、それぞれの特性に応じて、回転速度に対して適正量のオイルが貯留されるように、第１の連通孔２０２の開口面積、開口方向、形状等を設定すればよい。 5 to 7 show various possible arrangement positions of the storage chamber 206 other than the first embodiment.
In the second and third embodiments shown in FIGS. 5A and 5B, through bolts 201a, which are close to the first communication hole 202 and the second communication hole 203, compared to the first embodiment. Reference numerals 201b respectively denote one on the upper side and one on the lower side. While discharging the refrigerant in the storage chamber 206 from the second communication hole 203 into the crank chamber 105, the oil received on the upstream side in the rotation direction of the through bolt 201a is caused to flow into the storage chamber 206 from the first communication hole 202. Storing up to the liquid level in equilibrium with the outflow amount is the same. However, in the case of (B), as compared with (A), since the storage chamber 206 is located below the first communication hole 202, the oil is easy to flow into the storage chamber 206 and not easily flow out. Become. Therefore, the opening area, opening direction, shape, and the like of the first communication hole 202 may be set so that an appropriate amount of oil is stored with respect to the rotation speed in accordance with each characteristic.

図６（Ａ）〜（Ｃ）に示した第４〜第６の実施形態は、回転部材が下方から上方に向かって回転する側（図示左側）に貯留室２０６を配設する例を示し、貯留室２０６の周方向中央部に位置する１本の共通な通しボルト２０１ｃに対して、その上流側（下側）に第１の連通孔２０２を配設し、下流側（上側）に第２の連通孔２０３を配設する。
この場合も、通しボルト２０１ｃの上流側でオイルが受け止められて第１の連通孔２０２を介してオイルを貯留室２０６内に流入させ、その際に、通しボルト２０１ｃ下流の負圧発生側に配設された第２の連通孔２０３を介して貯留室２０６内の冷媒をクランク室２０６内に排出することにより、オイルをスムーズに流入させることができる。 The fourth to sixth embodiments shown in FIGS. 6A to 6C show examples in which the storage chamber 206 is disposed on the side (the left side in the drawing) where the rotating member rotates upward from below. The first communication hole 202 is disposed on the upstream side (lower side) of the common through-bolt 201c located in the central portion in the circumferential direction of the storage chamber 206, and the second on the downstream side (upper side). The communication hole 203 is provided.
Also in this case, the oil is received on the upstream side of the through bolt 201c and flows into the storage chamber 206 through the first communication hole 202. At this time, the oil is disposed on the negative pressure generation side downstream of the through bolt 201c. By discharging the refrigerant in the storage chamber 206 into the crank chamber 206 through the provided second communication hole 203, the oil can flow smoothly.

以上の実施形態では、下側の第１の連通孔２０２からオイルを流入させ、上側の第２の連通孔２０３からガス抜きを行うものを示した。
これに対し、図７に示す第７の実施形態では、図６と同じく回転部材が下方から上方に向かって回転する側（図示左側）に貯留室２０６を配設する例において、上側の通しボルト２０１ｄの回転方向上流側に近接して第１の連通孔２０２を配設し、下側の通しボルト２０１ｅの下流側に近接して第２の連通孔２０３を配設する。つまり、各連通孔に近接する通しボルトが２本別々であることは、第１の実施形態及び図５（Ａ），（Ｂ）と同様であるが、第１の連通孔２０２が上側、第２の連通孔２０３が下側に位置する点で相違する。 In the above embodiment, the oil is introduced from the lower first communication hole 202 and the gas is vented from the upper second communication hole 203.
On the other hand, in the seventh embodiment shown in FIG. 7, in the example in which the storage chamber 206 is disposed on the side (the left side in the drawing) where the rotating member rotates upward from below as in FIG. A first communication hole 202 is disposed close to the upstream side in the rotational direction of 201d, and a second communication hole 203 is disposed close to the downstream side of the lower through bolt 201e. That is, it is the same as that of the first embodiment and FIGS. 5A and 5B that the two through bolts adjacent to each communication hole are separate, but the first communication hole 202 is the upper side, The difference is that the two communication holes 203 are located on the lower side.

このものでも、通しボルト２０１ｄの上流側で受けたオイルを第１の連通孔２０２を介して貯留室２０６に流入させることは同様である。
一方、貯留室２０６の下位に配設された第２の連通孔２０３は、第１の連通孔２０２から貯留室２０６内に流入して貯留されたオイルを流出する機能を有する。そして、第２の連通孔２０３の開口面積を小さくして絞り機能を持たせることにより、貯留室２０６内の貯留量を調整する。具体的には、回転速度の上昇により第１の連通孔２０２からのオイル流入量が増大し、貯留室２０６への貯留量が増大するが、一方、貯留室２０６内のオイルの自重による液圧も増大して第２の連通孔２０３からのオイルの排出量も増大し、流入量と流出量とがバランスするところまで液面が上昇する。 Even in this case, it is the same that oil received on the upstream side of the through bolt 201 d flows into the storage chamber 206 through the first communication hole 202.
On the other hand, the second communication hole 203 arranged below the storage chamber 206 has a function of flowing into the storage chamber 206 from the first communication hole 202 and discharging stored oil. Then, the storage amount in the storage chamber 206 is adjusted by reducing the opening area of the second communication hole 203 to provide a throttle function. Specifically, the amount of oil inflow from the first communication hole 202 increases due to the increase in the rotational speed, and the amount of oil stored in the storage chamber 206 increases. On the other hand, the hydraulic pressure due to the weight of the oil in the storage chamber 206 increases. The amount of oil discharged from the second communication hole 203 also increases, and the liquid level rises to a point where the inflow amount and the outflow amount are balanced.

ここで、第１の連通孔２０２は、貯留室２０６の上側で連通しているため下方に貯留されたオイルで閉塞されることはない。したがって、第１の連通孔２０２は、ある程度以上の開口面積を持たせれば、貯留室２０６へのオイルの流入と同時に貯留室２０６内の冷媒をクランク室１０５に排出するガス抜き機能を持たせることができ、貯留室２０６内へオイルをスムーズに流入させることができる。   Here, since the 1st communicating hole 202 is connected on the upper side of the storage chamber 206, it is not obstruct | occluded with the oil stored below. Therefore, if the first communication hole 202 has an opening area of a certain extent or more, it has a degassing function for discharging the refrigerant in the storage chamber 206 to the crank chamber 105 simultaneously with the inflow of oil into the storage chamber 206. Thus, the oil can smoothly flow into the storage chamber 206.

このように、本第７の実施形態では、第１の連通孔２０２のオイル流入機能、第２の連通孔２０３のオイル流出機能を、分離している点で相違するが、上位側の連通孔でガス抜きを行うことは同様である。
また、図８に示すようにクランク室１０５周りに、複数（図では２個）の貯留室２０６を配設する構成としてもよい。 As described above, the seventh embodiment is different in that the oil inflow function of the first communication hole 202 and the oil outflow function of the second communication hole 203 are separated, but the upper communication hole is different. The degassing is the same.
In addition, as shown in FIG. 8, a plurality (two in the figure) of storage chambers 206 may be disposed around the crank chamber 105.

以上示したように、貯留室２０６は、クランク室１０５周りの多様な位置にさせることが可能であり、圧縮機１００が配設されるエンジンルーム等の他の機器との干渉を回避する位置に配設することができる。
ただし、真下の位置は、回転速度の高低に関わり無く常に貯留室にオイルが貯留されることになるため除外する。真上の位置も実質的に十分なオイルを貯留することが難しいので除外すべきである。 As described above, the storage chamber 206 can be placed in various positions around the crank chamber 105, and is in a position that avoids interference with other equipment such as an engine room in which the compressor 100 is disposed. It can be arranged.
However, the position immediately below is excluded because oil is always stored in the storage chamber regardless of the rotational speed. The position directly above should be excluded because it is difficult to store substantially enough oil.

以上の実施形態は、締結用の通しボルトをオイル受け部として利用したものを示したが、通しボルトとは、別にオイル受け部を設けて、オイル受け機能を促進する構成とすることもできる。
図９は、かかる実施形態を示し、上記第１の実施形態において、第１の連通孔２０２下端周縁付近のフロントハウジング１０１内壁部分から、軸方向に所定の長さを有したオイル受け部３０１を、内側（クランク室１０５側）に向けて突出させて配設する。該オイル受け部３０１は、フロンとハウジング１０２と一体に形成してよいが、別体に形成したものをフロンとハウジング１０２に固定してもよい。なお、オイル受け部３０１は、その下端面を下流側に近接する通しボルト２０１の上面に連接するように配設するのがよく、このようにすれば、オイル受け部３０１側方の通しボルト２０１で受けたオイルもオイル受け部３０１を介して第１の連通孔２０２から貯留室２０６に導くことができる。 In the above embodiment, the fastening bolt is used as the oil receiving portion. However, the oil receiving portion may be provided separately from the through bolt to promote the oil receiving function.
FIG. 9 shows such an embodiment. In the first embodiment, an oil receiving portion 301 having a predetermined length in the axial direction is formed from the inner wall portion of the front housing 101 near the lower end periphery of the first communication hole 202. , And projecting toward the inside (crank chamber 105 side). The oil receiving portion 301 may be formed integrally with the chlorofluorocarbon and the housing 102, but may be formed separately from the chlorofluorocarbon and the housing 102. The oil receiving portion 301 is preferably disposed so that the lower end surface thereof is connected to the upper surface of the through bolt 201 close to the downstream side. In this way, the through bolt 201 on the side of the oil receiving portion 301 is disposed. The oil received in step 1 can be guided from the first communication hole 202 to the storage chamber 206 through the oil receiving portion 301.

かかる構成とすれば、第１の連通孔２０２に連なるオイル受け部３０１の上面でクランク室１０５内のオイルを、より効率的に受け止めて貯留室２０６にオイルが流入されやすくすることができる。
さらに、以上の実施形態で適用した可変容量圧縮機とは、一部機構が異なるタイプの可変容量圧縮機にも本発明を適用することができる。 With such a configuration, the oil in the crank chamber 105 can be more efficiently received on the upper surface of the oil receiving portion 301 connected to the first communication hole 202, and the oil can easily flow into the storage chamber 206.
Furthermore, the present invention can also be applied to a variable capacity compressor that is partially different in mechanism from the variable capacity compressor applied in the above embodiment.

例えば、特公平４−２８９１１号等に開示される可変容量圧縮機は、図１０（Ａ）に示すように、斜板４０１とピストン４０２とを同様に備えるが、斜板４０１の回転運動をピストン４０２の往復動に変換する機構が相違する。具体的には、斜板４０１の傾斜面に沿って斜板４０１に対し相対回転自由に揺動板４０３を配設し、この揺動板４０３を収納ハウジング４０４内壁に軸方向に沿って配設されたガイド板４０５に係合させて回転を拘束しつつ揺動させ、該揺動板４０５にロッド４０６を介して連係したピストン４０２を往復動させている。   For example, a variable displacement compressor disclosed in Japanese Patent Publication No. 4-28911 or the like includes a swash plate 401 and a piston 402 as shown in FIG. The mechanism for converting to 402 reciprocating motion is different. Specifically, a swing plate 403 is disposed along the inclined surface of the swash plate 401 so as to be freely rotatable relative to the swash plate 401, and the swing plate 403 is disposed on the inner wall of the storage housing 404 along the axial direction. The piston 402 engaged with the guide plate 405 is swung while restraining rotation, and the piston 402 linked to the swing plate 405 via the rod 406 is reciprocated.

かかる可変容量圧縮機では、前記ガイド板４０５は、斜板４０１等の回転部材の外周側に配設されるので、該ガイド板４０５に冷媒中のオイルが当たって受け止められる。したがって、軸方向に分割して形成される収納ハウジング４０４が通しボルト以外の手段で締結されている場合でも、前記ガイド板４０５をオイル受け部として利用して本発明を適用することができる。   In such a variable capacity compressor, the guide plate 405 is disposed on the outer peripheral side of a rotating member such as the swash plate 401, so that the oil in the refrigerant hits the guide plate 405 and is received. Therefore, even when the storage housing 404 formed by being divided in the axial direction is fastened by means other than through bolts, the present invention can be applied using the guide plate 405 as an oil receiving portion.

具体的には、同図（Ｂ）に示すように、前記ガイド板４０５の斜板４０１回転方向上流側に近接してシリンダブロックを貫通する第１の連通孔４０７と、該第１の連通孔４０７と回転方向に離れた位置に第２の連通孔４０８とを配設し、これら第１の連通孔４０７及び第２の連通孔４０８とを内包する貯留室４０９を収納ハウジング４０４外側に形成する。そして、第１の連通孔より上位に第２の連通孔４０８を配置して第２の連通孔４０８にガス抜き機能を持たせつつ第１の連通孔４０７から貯留室４０９にオイルを導入させる。または、第１の連通孔４０７を第２の連通孔４０８より上位に配置して第１の連通孔４０７にガス抜き機能を持たせつつオイルを流入させ、第２の連通孔４０８からオイルを流出させるようにすればよい。   Specifically, as shown in FIG. 5B, the first communication hole 407 penetrating the cylinder block close to the upstream side of the swash plate 401 in the rotational direction of the guide plate 405, and the first communication hole A second communication hole 408 is disposed at a position away from the rotation direction 407, and a storage chamber 409 that includes the first communication hole 407 and the second communication hole 408 is formed outside the storage housing 404. . Then, the second communication hole 408 is disposed above the first communication hole, and oil is introduced into the storage chamber 409 from the first communication hole 407 while the second communication hole 408 has a gas venting function. Alternatively, the first communication hole 407 is disposed higher than the second communication hole 408 so that the first communication hole 407 has a gas venting function and the oil flows in, and the oil flows out from the second communication hole 408. You can make it.

また、以上の実施形態において、貯留室内をシリンダへの吸入室とチューブ，パイプ等の負圧導入通路を介して連通接続し、吸入室の負圧を貯留室に導く構成としてもよく、貯留室へオイルが導入されやすくなる。この場合、ガス抜き機能を有する連通孔を、吸入室に連通接続する構成とすることもできる。
また、貯留室２０６は、フロントハウジングのみならず、シリンダブロック、さらにはリアハウジングにまで跨るように軸方向に延ばして形成して、貯留容量を拡大してもよい。 In the above embodiment, the storage chamber may be connected to the cylinder via a negative pressure introduction passage such as a tube and a pipe, and the negative pressure in the suction chamber may be guided to the storage chamber. It becomes easy to introduce oil into the water. In this case, a communication hole having a gas venting function can be connected to the suction chamber.
Further, the storage chamber 206 may be formed to extend in the axial direction so as to extend not only to the front housing but also to the cylinder block and further to the rear housing, thereby expanding the storage capacity.

１００…可変容量圧縮機、１０１…シリンダブロック、１０１ａ…シリンダ、１０２…フロントハウジング、１０３…バルブプレート、１０４…リアハウジング、１０５…クランク室、１０６…駆動軸、１０７…斜板、１０８…ロータ、１１７…ピストン、１１８…シュー、１１９…吸入室、１２０…吐出室、１２１…給気通路、２００…容量制御弁、２０１，２０１ａ〜２０１ｅ…通しボルト、２０２…第１の連通孔、２０３…第２の連通孔、２０４…カバー、２０５…ボルト、２０６…貯留室、３０１…オイル受け部、４０１…斜板、４０２…ピストン、４０３…揺動板、４０４…収納ハウジング、４０５…ガイド板、４０６…ロッド、４０７…第１の連通孔、４０８…第２の連通孔   DESCRIPTION OF SYMBOLS 100 ... Variable capacity compressor, 101 ... Cylinder block, 101a ... Cylinder, 102 ... Front housing, 103 ... Valve plate, 104 ... Rear housing, 105 ... Crank chamber, 106 ... Drive shaft, 107 ... Swash plate, 108 ... Rotor, 117 ... Piston, 118 ... Shoe, 119 ... Suction chamber, 120 ... Discharge chamber, 121 ... Air supply passage, 200 ... Volume control valve, 201, 201a to 201e ... Through bolt, 202 ... First communication hole, 203 ... No. 2 communication holes, 204 ... cover, 205 ... bolt, 206 ... storage chamber, 301 ... oil receiving part, 401 ... swash plate, 402 ... piston, 403 ... swing plate, 404 ... storage housing, 405 ... guide plate, 406 ... Rod, 407 ... First communication hole, 408 ... Second communication hole

Claims (10)

円筒状収納部材と、該円筒状収納部材の中心軸周りに非水平面内を回転駆動される回転部材と、前記円筒状収納部材の中心軸外側周囲に形成された複数のシリンダ内に、前記中心軸と平行な軸方向に往復動して冷媒を吸入／吐出する複数のピストンと、前記回転部材の回転運動を前記ピストンの往復動に変換する運動方向変換機構と、前記運動方向変換機構における回転部材回転量に対するピストン往復動の変換量を制御して冷媒吐出量を制御する制御機構と、を含んで構成される可変容量圧縮機において、
前記円筒状収納部材の前記回転部材を収容する内側空間にあって前記回転部材の回転軌跡の外側に配設され、遠心力が作用する冷媒中のオイルを受けるオイル受け部と、
前記円筒状収納部材の内外を貫通して形成され、前記オイル受け部に対し、前記回転部材の回転方向上流側に近接する第１の連通孔と、該第１の連通孔とは前記回転方向に離して配置した第２の連通孔と、を含む複数の連通孔と、
前記複数の連通孔を介して前記円筒状収納部材の内側空間と連通するように、前記円筒状収納部材の外側に形成され、冷媒中のオイルを貯留する貯留室と、
を含んで構成されることを特徴とする可変容量圧縮機。 A cylindrical storage member; a rotation member that is driven to rotate in a non-horizontal plane around a central axis of the cylindrical storage member; and a plurality of cylinders formed around the outer side of the central axis of the cylindrical storage member. A plurality of pistons that reciprocate in an axial direction parallel to the shaft to suck / discharge refrigerant, a movement direction conversion mechanism that converts the rotational movement of the rotating member into a reciprocating movement of the piston, and rotation in the movement direction conversion mechanism In a variable capacity compressor configured to include a control mechanism that controls a refrigerant discharge amount by controlling a conversion amount of piston reciprocation with respect to a member rotation amount,
An oil receiving portion for receiving oil in the refrigerant, which is disposed in an inner space for accommodating the rotating member of the cylindrical storage member and is disposed outside the rotation locus of the rotating member, and subjected to centrifugal force;
A first communication hole that is formed through the inside and outside of the cylindrical storage member and is close to the oil receiving portion on the upstream side in the rotation direction of the rotation member, and the first communication hole is the rotation direction. A plurality of communication holes including a second communication hole disposed apart from each other,
A storage chamber that is formed outside the cylindrical storage member so as to communicate with the inner space of the cylindrical storage member via the plurality of communication holes, and stores oil in the refrigerant;
A variable capacity compressor characterized by comprising. 前記可変容量圧縮機は、前記円筒状収納部材の中心軸が略水平方向に配設され、車両の駆動源によって駆動される請求項１に記載の可変容量圧縮機。   The variable capacity compressor according to claim 1, wherein a central axis of the cylindrical storage member is disposed in a substantially horizontal direction and is driven by a vehicle drive source. 前記第１の連通孔は貯留室の下部、前記第２の連通孔は貯留室の上部に配設される請求項１または請求項２に記載の可変容量圧縮機。   3. The variable capacity compressor according to claim 1, wherein the first communication hole is disposed at a lower portion of the storage chamber, and the second communication hole is disposed at an upper portion of the storage chamber. 前記円筒状収納部材は、軸方向に複数個に分割して形成され、前記オイル受け部は、前記分割された複数個の円筒状収納部材相互を締結する中心軸周り複数本の通しボルトの円筒状収納部材内側空間に露出する中間部分である請求項１〜請求項３のいずれか１つに記載の可変容量圧縮機。   The cylindrical storage member is divided into a plurality of parts in the axial direction, and the oil receiving portion is a cylinder of a plurality of through-bolts around a central axis for fastening the divided cylindrical storage members to each other. The variable capacity compressor according to any one of claims 1 to 3, wherein the compressor is an intermediate portion exposed to the inner space of the cylindrical storage member. 前記貯留室は、前記回転部材が上方から下方に回転する側に配設され、前記第１の連通孔は、前記貯留室下部に近接する通しボルトの上流側に近接して配設され、前記第２の連通孔は、前記貯留室上部に近接する別の通しボルトの下流側に近接して前記第１の連通孔より上方に配設される請求項４に記載の可変容量圧縮機。   The storage chamber is disposed on a side where the rotating member rotates from above to below, and the first communication hole is disposed close to an upstream side of a through bolt that is close to a lower portion of the storage chamber, 5. The variable capacity compressor according to claim 4, wherein the second communication hole is disposed above the first communication hole adjacent to a downstream side of another through bolt adjacent to the upper portion of the storage chamber. 前記貯留室は、前記回転部材が下方から上方に回転する側に配設され、前記第１の連通孔は、前記貯留室下部の上下方向中間部に配置される通しボルトの下方に配設され、前記第２の連通孔は、同一の通しボルトの上方に配設される請求項４に記載の可変容量圧縮機。   The storage chamber is disposed on a side where the rotating member rotates upward from below, and the first communication hole is disposed below a through bolt disposed in an intermediate portion in the vertical direction of the lower portion of the storage chamber. The variable capacity compressor according to claim 4, wherein the second communication hole is disposed above the same through bolt. 前記貯留室は、前記回転部材が下方から上方に回転する側に配設され、前記第１の連通孔は、前記貯留室上部に近接する通しボルトの上流側に近接して配設され、前記第２の連通孔は、前記貯留室下部に近接する別の通しボルトの下流側に近接して前記第１の連通孔より下方に配設される請求項４に記載の可変容量圧縮機。   The storage chamber is disposed on a side where the rotating member rotates from below to above, and the first communication hole is disposed in proximity to an upstream side of a through bolt that is close to the upper portion of the storage chamber, 5. The variable capacity compressor according to claim 4, wherein the second communication hole is disposed below the first communication hole adjacent to a downstream side of another through bolt adjacent to the lower portion of the storage chamber. 前記回転部材は、前記駆動軸に回転面を傾斜させて連結され、前記制御機構は、前記回転部材の回転面傾斜角を制御することにより、前記運動方向変換機構における回転部材回転量に対するピストン往復動の変換量を制御して冷媒吐出量を制御する請求項１〜請求項７のいずれか１つに記載の可変容量圧縮機。   The rotating member is coupled to the drive shaft with an inclined rotation surface, and the control mechanism controls a rotation surface inclination angle of the rotating member, thereby reciprocating the piston with respect to the rotation amount of the rotating member in the motion direction conversion mechanism. The variable capacity compressor according to any one of claims 1 to 7, wherein a refrigerant discharge amount is controlled by controlling a dynamic conversion amount. 前記運動方向変換機構は、前記回転部材の回転運動を該回転運動によって揺動する揺動板を介して前記ピストンの往復動に変換し、前記オイル受け部は、前記揺動板の回転を阻止しつつ揺動させるように前記円筒状収納部材の内壁に配設されたガイド板によって構成される請求項８に記載の可変容量圧縮機。   The movement direction conversion mechanism converts the rotary motion of the rotating member into a reciprocating motion of the piston through a swing plate that swings by the rotary motion, and the oil receiving portion prevents the swing plate from rotating. The variable capacity compressor according to claim 8, comprising a guide plate disposed on an inner wall of the cylindrical housing member so as to be swung. 前記貯留室は、前記シリンダ内に冷媒を吸入する吸入室と連通される請求項１〜請求項９のいずれか１つに記載の可変容量圧縮機。   The variable capacity compressor according to any one of claims 1 to 9, wherein the storage chamber communicates with a suction chamber that sucks a refrigerant into the cylinder.
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JP2012002196A (en) 2012-01-05
CN102947591A (en) 2013-02-27
WO2011162072A1 (en) 2011-12-29
DE112011102085T5 (en) 2013-07-11

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