JP4607047B2 - Variable displacement compressor discharge capacity control valve - Google Patents

Variable displacement compressor discharge capacity control valve Download PDF

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JP4607047B2
JP4607047B2 JP2006125346A JP2006125346A JP4607047B2 JP 4607047 B2 JP4607047 B2 JP 4607047B2 JP 2006125346 A JP2006125346 A JP 2006125346A JP 2006125346 A JP2006125346 A JP 2006125346A JP 4607047 B2 JP4607047 B2 JP 4607047B2
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valve
hole
cylindrical space
valve body
discharge capacity
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JP2007297946A (en
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幸彦 田口
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Sanden Holdings Corp
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Description

本発明は、可変容量圧縮機の吐出容量制御弁に関するものである。   The present invention relates to a discharge capacity control valve of a variable capacity compressor.

クランク室と連通し且つ弁孔と連通孔とを介して吐出圧領域と連通する弁室と、弁室内に配設された一端部が弁孔を開閉する弁体と、弁体の他端部を摺動可能に支持する支持孔を有し弁体の他端を吐出圧領域から遮断して弁体を収容するバルブハウジングと、弁体を弁孔開閉方向へ駆動する駆動手段とを備え、弁孔と支持孔との間に弁孔及び支持孔と同径の筒状空間が形成され、筒状空間を介して連通孔と弁孔とが連通し、弁室は弁孔と筒状空間と連通孔とを介して吐出圧領域と連通し、連通孔は筒状空間の中心軸線と交差するように配設されていることを特徴とする可変容量圧縮機の吐出容量制御弁が特許文献１に開示されている。
特許文献１には、支持孔に挿通された弁体の他端部の断面積と弁孔の断面積とを等しくすることにより、弁体に対して吐出圧力が弁孔開閉方向へ作用しない吐出容量制御を実現できる旨記載されている。
特開２０００−１８４２０号公報 A valve chamber that communicates with the crank chamber and communicates with the discharge pressure region via the valve hole and the communication hole, a valve body having one end portion disposed in the valve chamber for opening and closing the valve hole, and the other end portion of the valve body A valve housing that has a support hole that slidably supports the valve body and shuts off the other end of the valve body from the discharge pressure region and accommodates the valve body, and driving means that drives the valve body in the valve hole opening and closing direction, A cylindrical space having the same diameter as the valve hole and the support hole is formed between the valve hole and the support hole, the communication hole and the valve hole communicate with each other through the cylindrical space, and the valve chamber has the valve hole and the cylindrical space. A discharge capacity control valve for a variable capacity compressor is characterized in that the communication hole communicates with a discharge pressure region through a communication hole, and the communication hole is disposed so as to intersect the central axis of the cylindrical space. 1 is disclosed.
Patent Document 1 discloses a discharge in which discharge pressure does not act on the valve body in the valve hole opening / closing direction by making the cross-sectional area of the other end of the valve body inserted through the support hole equal to the cross-sectional area of the valve hole. It is described that capacity control can be realized.
JP 2000-18420 A

特許文献１の吐出容量制御弁においては、弁孔と支持孔と両者の接続部である筒状空間とが同一径であり、連通孔が前記筒状空間に交差している。これらの孔は穴加工により形成されるので、前記筒状空間と連通孔との交差部に加工バリが発生する。加工バリを完全に除去するためには中グリ加工等の工程を追加しなければならず、生産性、コストの点で問題があった。また、吐出圧領域から連通孔を介して筒状空間に流入する冷媒ガスに異物が含まれていると、当該異物が弁体他端部と支持孔の間の微小隙間に侵入し、弁体他端部ひいては弁体の動きが阻害され、吐出容量制御弁の作動が阻害されて、スムーズな吐出容量制御ができなくなるおそれがある。
本発明は上記問題に鑑みてなされたものであり、特許文献１の容量制御弁よりも穴加工が容易であり、弁体他端部と支持孔の間の微小隙間への異物侵入が防止された可変容量圧縮機の吐出容量制御弁を提供することを目的とする。 In the discharge capacity control valve of Patent Document 1, the valve hole, the support hole, and the cylindrical space that is the connection portion between them have the same diameter, and the communication hole intersects the cylindrical space. Since these holes are formed by drilling, a processing burr is generated at the intersection between the cylindrical space and the communication hole. In order to completely remove the processing burr, it is necessary to add a process such as a medium grind processing, and there is a problem in terms of productivity and cost. In addition, if foreign material is contained in the refrigerant gas flowing into the cylindrical space from the discharge pressure region through the communication hole, the foreign material enters the minute gap between the other end of the valve body and the support hole, and the valve body The movement of the other end portion and the valve body is hindered, and the operation of the discharge capacity control valve is hindered, and there is a possibility that smooth discharge capacity control cannot be performed.
The present invention has been made in view of the above problems, and is more easily drilled than the capacity control valve of Patent Document 1, and foreign matter intrusion into a minute gap between the other end of the valve body and the support hole is prevented. Another object of the present invention is to provide a discharge capacity control valve for a variable capacity compressor.

上記課題を解決するために、本発明においては、クランク室と連通し且つ弁孔と連通孔とを介して吐出圧領域と連通する弁室と、弁室内に配設された一端部が弁孔を開閉する弁体と、弁体の他端部を摺動可能に支持する支持孔を有し弁体の他端を吐出圧領域から遮断して弁体を収容するバルブハウジングと、弁体を弁孔開閉方向へ駆動する駆動手段とを備え、弁孔と支持孔との間に筒状空間が形成され、筒状空間の少なくとも支持孔寄りの部位は弁孔及び支持孔よりも大径に形成され、連通孔は筒状空間の前記大径に形成された部位に連通し、筒状空間を介して連通孔と弁孔とが連通し、弁室は弁孔と筒状空間と連通孔とを介して吐出圧領域と連通し、連通孔は筒状空間の中心軸線から径方向外方へオフセットして配設されていることを特徴とする可変容量圧縮機の吐出容量制御弁を提供する。
本発明に係る吐出容量制御弁においては、連通孔は筒状空間の支持孔よりも大径の部位と交差するので、中グリ加工等の追加の工程を必要とせず、特許文献１の吐出容量制御弁よりも穴加工が容易である。連通孔は筒状空間の中心軸線から径方向外方へオフセットして配設されているので、弁孔開放時に吐出圧領域から連通孔を通って筒状空間へ流入した冷媒ガスは、筒状空間内で旋回する。旋回により生じた遠心力を受けて、冷媒ガスに含まれる異物は筒状空間の周壁面方向へ移動し、支持孔と筒状空間との接続部から径方向外方へ離れる。この結果、弁体他端部と支持孔の間の微小隙間への異物侵入が防止される。
In order to solve the above problems, in the present invention, a valve chamber that communicates with a crank chamber and communicates with a discharge pressure region through a valve hole and a communication hole, and one end portion disposed in the valve chamber has a valve hole. A valve body that has a support hole that slidably supports the other end portion of the valve body, and that shuts off the other end of the valve body from the discharge pressure region and accommodates the valve body, Driving means for driving in the valve hole opening and closing direction, a cylindrical space is formed between the valve hole and the support hole, and at least a portion of the cylindrical space near the support hole has a larger diameter than the valve hole and the support hole. Formed, the communication hole communicates with the portion of the cylindrical space formed in the large diameter, the communication hole communicates with the valve hole through the cylindrical space, and the valve chamber communicates with the valve hole, the cylindrical space, and the communication hole. And communicating with the discharge pressure region, and the communication hole is arranged to be offset radially outward from the central axis of the cylindrical space. Providing discharge capacity control valve of a variable displacement compressor.
In the discharge capacity control valve according to the present invention, the communication hole intersects with a portion having a larger diameter than the support hole in the cylindrical space, so that an additional step such as machining of a center hole is not required, and the discharge capacity of Patent Document 1 is disclosed. Hole drilling is easier than control valves. Since the communication hole is disposed offset radially outward from the central axis of the cylindrical space, the refrigerant gas that has flowed from the discharge pressure region into the cylindrical space through the communication hole when the valve hole is opened is cylindrical. Swirl in space. In response to the centrifugal force generated by the turning, the foreign matter contained in the refrigerant gas moves in the direction of the peripheral wall surface of the cylindrical space, and leaves radially outward from the connection portion between the support hole and the cylindrical space. As a result, entry of foreign matter into the minute gap between the other end of the valve body and the support hole is prevented.

本発明の好ましい態様においては、弁孔と弁孔開口部周囲の弁座とはバルブハウジングとは別体の弁座形成体に形成され、弁座形成体がバルブハウジングに嵌合固定されて、筒状空間が形成されている。
弁孔と弁孔開口部周囲の弁座とをバルブハウジングとは別体の弁座形成体に形成し、弁座形成体をバルブハウジングに嵌合固定して、筒状空間を形成することにより、大径の筒状空間を容易に形成することができる。大径の筒状空間の形成により、連通孔の筒状空間中心軸線から径方向外方へのオフセット量を大きくすることができるので、弁体他端部と支持孔の間の微小隙間への異物侵入がより効果的に防止される。 In a preferred aspect of the present invention, the valve hole and the valve seat around the valve hole opening are formed in a valve seat forming body separate from the valve housing, and the valve seat forming body is fitted and fixed to the valve housing. A cylindrical space is formed.
By forming the valve hole and the valve seat around the valve hole opening in a valve seat forming body separate from the valve housing, and fitting and fixing the valve seat forming body to the valve housing to form a cylindrical space A large-diameter cylindrical space can be easily formed. By forming the large-diameter cylindrical space, it is possible to increase the amount of offset from the cylindrical space central axis of the communication hole radially outward, so that the minute gap between the other end of the valve body and the support hole can be reduced. Foreign matter intrusion is more effectively prevented.

本発明の好ましい態様においては、吐出容量制御弁は、周方向に互いに間隔を隔てて且つ筒状空間の周壁面に開口する一端を同一旋回方向へ差し向けて配設された複数の連通孔を備える。
周方向に互いに間隔を隔てて且つ筒状空間の周壁面に開口する一端を同一旋回方向へ差し向けて複数の連通孔が配設されることにより、筒状空間内での旋回流の発生が促進され、弁体他端部と支持孔の間の微小隙間への異物侵入がより効果的に防止される。
本発明の好ましい態様においては、連通孔は筒状空間の周壁面に対して接線方向へ差し向けられている。
連通孔が筒状空間の周壁面に対して接線方向へ差し向けられることにより、筒状空間内での旋回流の発生が促進され、弁体他端部と支持孔の間の微小隙間への異物侵入がより効果的に防止される。 In a preferred aspect of the present invention, the discharge capacity control valve has a plurality of communication holes disposed at intervals in the circumferential direction and with one end opened to the circumferential wall surface of the cylindrical space directed in the same turning direction. Prepare.
A plurality of communication holes are arranged with one end opened at the circumferential wall surface of the cylindrical space spaced apart from each other in the circumferential direction so that a swirling flow is generated in the cylindrical space. It is promoted and foreign matter intrusion into the minute gap between the other end of the valve body and the support hole is more effectively prevented.
In a preferred embodiment of the present invention, the communication hole is directed in a tangential direction with respect to the peripheral wall surface of the cylindrical space.
The communication hole is directed in a tangential direction with respect to the peripheral wall surface of the cylindrical space, whereby the generation of a swirling flow in the cylindrical space is promoted, and the minute gap between the other end of the valve body and the support hole is promoted. Foreign matter intrusion is more effectively prevented.

本発明の好ましい態様においては、筒状空間の弁孔側端部は弁孔へ向けて漏斗状に傾斜している。
筒状空間の弁孔側端部を弁孔へ向けて漏斗状に傾斜させることにより、弁孔開放時の連通孔から弁孔への冷媒ガスの流れがスムーズになる。この結果、筒状空間からの異物の排出性能が向上する。 In a preferred embodiment of the present invention, the valve hole side end of the cylindrical space is inclined in a funnel shape toward the valve hole.
By inclining the end portion on the valve hole side of the cylindrical space in a funnel shape toward the valve hole, the flow of the refrigerant gas from the communication hole to the valve hole when the valve hole is opened becomes smooth. As a result, the foreign substance discharge performance from the cylindrical space is improved.

本発明の好ましい態様においては、弁体はバルブハウジングよりも硬度の高い材料で形成されている。
本発明の好ましい態様においては、弁体が表面硬化処理されている。
弁体他端部と支持孔の間の微小隙間へ万一異物が侵入しても、異物は弁体よりも硬度の低いバルブハウジング側に食い込みながら前記隙間から排出されるので、弁体他端部ひいては弁体の動きをあまり阻害しない。 In a preferred embodiment of the present invention, the valve body is made of a material having a hardness higher than that of the valve housing.
In the preferable aspect of this invention, the valve body is surface-hardened.
Even if a foreign object enters the minute gap between the other end of the valve body and the support hole, the foreign object is discharged from the gap while biting into the valve housing having a lower hardness than the valve body. As a result, the movement of the valve body is not so hindered.

本発明の好ましい態様においては、駆動手段は、弁体の他端に連結し、吸入圧力の変化により変位して弁体を駆動する感圧部材を有する自律制御機構と、弁体に電磁力を作用させることにより自律制御機構の吸入圧力制御特性を変化させる外部制御機構とを備えている。
外部環境に応じて、吸入圧力を最適制御することができる。 In a preferred aspect of the present invention, the driving means is connected to the other end of the valve body, and has an autonomous control mechanism having a pressure-sensitive member that is displaced by a change in suction pressure to drive the valve body, and electromagnetic force is applied to the valve body. And an external control mechanism that changes the suction pressure control characteristic of the autonomous control mechanism by acting.
The suction pressure can be optimally controlled according to the external environment.

本発明の好ましい態様においては、駆動手段は、弁体の他端に連結し、冷媒回路の二つの圧力監視点間の圧力差の変化により変位して弁体を駆動する感圧部材を有する自律制御機構と、弁体に電磁力を作用させることにより自律制御機構の差圧制御特性を変化させる外部制御機構とを備えている。
外部環境に応じて、圧力監視点間の圧力差を最適制御することができる。 In a preferred aspect of the present invention, the driving means is connected to the other end of the valve body, and is autonomous with a pressure-sensitive member that is displaced by a change in pressure difference between two pressure monitoring points of the refrigerant circuit and drives the valve body. A control mechanism and an external control mechanism that changes the differential pressure control characteristic of the autonomous control mechanism by applying electromagnetic force to the valve body are provided.
The pressure difference between the pressure monitoring points can be optimally controlled according to the external environment.

本発明に係る吐出容量制御弁においては、連通孔は支持孔よりも大径の筒状空間と交差するので、中グリ加工等の追加の工程を必要とせず、特許文献１の吐出容量制御弁よりも穴加工が容易である。連通孔は筒状空間の中心軸線から径方向外方へオフセットして配設されているので、弁孔開放時に吐出圧領域から連通孔を通って筒状空間へ流入した冷媒ガスは、筒状空間内で旋回する。旋回により生じた遠心力を受けて、冷媒ガスに含まれる異物は筒状空間の周壁面方向へ移動し、支持孔と筒状空間との接続部から径方向外方へ離れる。この結果、弁体他端部と支持孔の間の微小隙間への異物侵入が防止される。 In the discharge capacity control valve according to the present invention, the communication hole intersects with the cylindrical space having a diameter larger than that of the support hole. Drilling is easier than this. Since the communication hole is disposed offset radially outward from the central axis of the cylindrical space, the refrigerant gas that has flowed from the discharge pressure region into the cylindrical space through the communication hole when the valve hole is opened is cylindrical. Swirl in space. In response to the centrifugal force generated by the turning, the foreign matter contained in the refrigerant gas moves in the direction of the peripheral wall surface of the cylindrical space, and leaves radially outward from the connection portion between the support hole and the cylindrical space. As a result, foreign matter can be prevented from entering the minute gap between the other end of the valve body and the support hole.

本発明の実施例に係る可変容量圧縮機の吐出容量制御弁を説明する。   A discharge capacity control valve of a variable capacity compressor according to an embodiment of the present invention will be described.

図１に示すように、可変容量斜板式圧縮機１００は、複数のシリンダボア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、バルブプレート１０３を介してシリンダブロック１０１の他端に設けられたリアハウジング１０４とを備えている。
シリンダブロック１０１とフロントハウジング１０２とによって画成されるクランク室１０５内を横断して、駆動軸１０６が配設されている。駆動軸１０６は斜板１０７に挿通されている。斜板１０７は、駆動軸１０６に固定されたロータ１０８と連結部１０９を介して結合し、駆動軸１０６により傾角可変に支持されている。ロータ１０８と斜板１０７との間に、斜板１０７を最小傾角へ向けて付勢するコイルバネ１１０が配設されている。斜板１０７を挟んでコイルバネ１１０の反対側に、最小傾角状態にある斜板１０７を傾角増大方向へ付勢するコイルバネ１１１が配設されている。 As shown in FIG. 1, a variable capacity swash plate compressor 100 includes a cylinder block 101 having a plurality of cylinder bores 101a, a front housing 102 provided at one end of the cylinder block 101, and a cylinder block via a valve plate 103. And a rear housing 104 provided at the other end of 101.
A drive shaft 106 is disposed across the crank chamber 105 defined by the cylinder block 101 and the front housing 102. The drive shaft 106 is inserted through the swash plate 107. The swash plate 107 is coupled to a rotor 108 fixed to the drive shaft 106 via a connecting portion 109 and is supported by the drive shaft 106 so that the tilt angle is variable. A coil spring 110 is disposed between the rotor 108 and the swash plate 107 to urge the swash plate 107 toward the minimum inclination angle. On the opposite side of the coil spring 110 across the swash plate 107, a coil spring 111 for urging the swash plate 107 in the minimum tilt state in the direction of increasing the tilt angle is disposed.

駆動軸１０６の一端はフロントハウジング１０２のボス部１０２ａを貫通してハウジング外まで延在しており、電磁クラッチを介することなく、図示しない動力伝達装置を介して図示しない車両エンジンに直結している。駆動軸１０６とボス部１０２ａとの間に軸封装置１１２が配設されている。
駆動軸１０６は、ベアリング１１３、１１４、１１５、１１６によりラジアル方向及びスラスト方向に支持されている。 One end of the drive shaft 106 passes through the boss portion 102a of the front housing 102 and extends to the outside of the housing, and is directly connected to a vehicle engine (not shown) via a power transmission device (not shown) without using an electromagnetic clutch. . A shaft seal device 112 is disposed between the drive shaft 106 and the boss portion 102a.
The drive shaft 106 is supported in the radial direction and the thrust direction by bearings 113, 114, 115, and 116.

シリンダボア１０１ａ内に、ピストン１１７が配設され、ピストン１１７の一端部の窪み１１７ａ内に収容された一対のシュー１１８が斜板１０７の外周部を相対摺動可能に挟持している。駆動軸１０６の回転は、斜板１０７とシュー１１８とを介してピストン１１７の往復動に変換される。 A piston 117 is disposed in the cylinder bore 101a, and a pair of shoes 118 housed in a recess 117a at one end of the piston 117 sandwich the outer peripheral portion of the swash plate 107 so as to be slidable relative to each other. The rotation of the drive shaft 106 is converted into a reciprocating motion of the piston 117 via the swash plate 107 and the shoe 118.

リアハウジング１０４には、吸入室１１９と吐出室１２０とが形成されている。吸入室１１９は、バルブプレート１０３に形成された連通孔１０３ａと図示しない吸入弁とを介してシリンダボア１０１ａに連通し、吐出室１２０は図示しない吐出弁とバルブプレート１０３に形成された連通孔１０３ｂとを介してシリンダボア１０１ａに連通している。吸入室１１９は吸入ポート１０４ａを介して図示しない車両空調装置の蒸発器に接続している。
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、リアハウジング１０４は、協働して、駆動軸１０６、ロータ１０８、連結部１０９、斜板１０７、シュー１１８、ピストン１１７、シリンダボア１０１ａ、吸入弁、吐出弁等で形成される圧縮機構を収容するハウジングを形成している。 A suction chamber 119 and a discharge chamber 120 are formed in the rear housing 104. The suction chamber 119 communicates with the cylinder bore 101a via a communication hole 103a formed in the valve plate 103 and a suction valve (not shown), and the discharge chamber 120 communicates with a discharge hole (not shown) and a communication hole 103b formed in the valve plate 103. Is communicated with the cylinder bore 101a. The suction chamber 119 is connected to an evaporator of a vehicle air conditioner (not shown) through a suction port 104a.
Front housing 102, cylinder block 101, valve plate 103, and rear housing 104 cooperate to drive shaft 106, rotor 108, connecting portion 109, swash plate 107, shoe 118, piston 117, cylinder bore 101a, intake valve, discharge valve. A housing for accommodating a compression mechanism formed by a valve or the like is formed.

シリンダブロック１０１の外側にマフラ１２１が配設されている。マフラ１２１は、シリンダブロック１０１とは別体の有底筒状の蓋部材１２２を、シリンダブロック１０１の外面に立設した筒状壁１０１ｂにシール部材を介して接合することにより、形成されている。蓋部材１２２に、吐出ポート１２２ａが形成されている。吐出ポート１２２ａは図示しない車両空調装置の凝縮器に接続している。
マフラ１２１を吐出室１２０に連通させる連通路１２３が、シリンダブロック１０１とバルブプレート１０３とリアハウジング１０４とに亙って形成されている。マフラ１２１と連通路１２３とは、吐出室１２０と吐出ポート１２２ａとの間で延在する吐出通路を形成しており、マフラ１２１は当該吐出通路の途上に配設された拡張空間を形成している。
マフラ１２１の入口を開閉する逆止弁２００がマフラ１２１内に配設されている。 A muffler 121 is disposed outside the cylinder block 101. The muffler 121 is formed by joining a bottomed cylindrical lid member 122 separate from the cylinder block 101 to a cylindrical wall 101b erected on the outer surface of the cylinder block 101 via a seal member. . A discharge port 122 a is formed in the lid member 122. The discharge port 122a is connected to a condenser of a vehicle air conditioner (not shown).
A communication passage 123 that allows the muffler 121 to communicate with the discharge chamber 120 is formed across the cylinder block 101, the valve plate 103, and the rear housing 104. The muffler 121 and the communication passage 123 form a discharge passage extending between the discharge chamber 120 and the discharge port 122a, and the muffler 121 forms an expansion space arranged in the middle of the discharge passage. Yes.
A check valve 200 that opens and closes the inlet of the muffler 121 is disposed in the muffler 121.

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、リアハウジング１０４は図示しないガスケットを介して隣接し、複数の通しボルトを用いて一体に組付けられている。 The front housing 102, the cylinder block 101, the valve plate 103, and the rear housing 104 are adjacent to each other through a gasket (not shown), and are integrally assembled using a plurality of through bolts.

リアハウジング１０４に吐出容量制御弁３００が取り付けられている。吐出容量制御弁３００は、吐出室１２０とクランク室１０５との間の連通路１２４の開度を調整し、クランク室１０５への吐出冷媒ガスの導入量を制御する。クランク室１０５内の冷媒ガスは、ベアリング１１５、１１６と駆動軸１０６との間の隙間と、シリンダブロック１０１に形成された空間１２５と、バルブプレート１０３に形成されたオリフィス孔１０３ｃとを介して吸入室１１９へ流入する。
吐出容量制御弁３００により、クランク室１０５の内圧を可変制御して、可変容量斜板式圧縮機１００の吐出容量を可変制御することができる。吐出容量制御弁３００は、外部信号に基づいて内蔵するソレノイドへの通電量を調整し、連通路１２６を介して吐出容量制御弁３００の感圧室に導入される吸入室１１９の内圧が所定値になるように、可変容量斜板式圧縮機１００の吐出容量を可変制御し、また内蔵するソレノイドへの通電をＯＦＦすることにより連通路１２４を強制開放して、可変容量斜板式圧縮機１００の吐出容量を最小に制御する。吐出容量制御弁３００は、外部環境に応じて、吸入圧力を最適制御することができる。 A discharge capacity control valve 300 is attached to the rear housing 104. The discharge capacity control valve 300 adjusts the opening degree of the communication passage 124 between the discharge chamber 120 and the crank chamber 105 and controls the amount of refrigerant gas introduced into the crank chamber 105. The refrigerant gas in the crank chamber 105 is sucked through a gap between the bearings 115 and 116 and the drive shaft 106, a space 125 formed in the cylinder block 101, and an orifice hole 103 c formed in the valve plate 103. Flows into chamber 119.
The discharge capacity control valve 300 can variably control the internal pressure of the crank chamber 105 to variably control the discharge capacity of the variable capacity swash plate compressor 100. The discharge capacity control valve 300 adjusts the energization amount to the built-in solenoid based on the external signal, and the internal pressure of the suction chamber 119 introduced into the pressure sensing chamber of the discharge capacity control valve 300 via the communication path 126 is a predetermined value. Thus, the discharge capacity of the variable capacity swash plate compressor 100 is variably controlled and the communication passage 124 is forcibly opened by turning off the energization of the built-in solenoid, so that the discharge of the variable capacity swash plate compressor 100 is performed. Control capacity to a minimum. The discharge capacity control valve 300 can optimally control the suction pressure according to the external environment.

吐出容量制御弁３００の構成を詳述する。
図２に示すように、吐出容量制御弁３００は、バルブハウジング３０１に形成された感圧室３０２内に配設され、連通孔３０１ａを介して吸入圧力を受圧し、内部を真空にしてばねを配設した感圧手段として機能するベローズ３０３と、一端部がバルブハウジング３０１に形成された弁室３１２内に配設されクランク圧力を受圧すると共に吐出室１２０とクランク室１０５との間の連通路１２４に配設された弁孔３０５ａを開閉し、他端部である感圧ロッド３０４ｃがバルブハウジング３０１の支持孔３０１ｂに摺動可能に支持され、他端がベローズ３０３に連結する弁体３０４と、弁孔３０５ａと弁座３０５ｂとが形成され、バルブハウジング３０１の収容孔３０１ｃの一端部に圧入固定された弁座形成体３０５と、弁体３０４に一体形成され、一端に可動鉄心３０６を圧入固定したソレノイドロッド３０４ａと、ソレノイドロッド３０４ａを内挿し、所定隙間を隔てて可動鉄心３０６に対向配置された固定鉄心３０７と、固定鉄心３０７と可動鉄心３０６の間に配設され、可動鉄心３０６を開弁方向に付勢するばね３０８と、固定鉄心３０７と可動鉄心３０６とを内挿してソレノイドケース３０９に固定された筒状部材３１０と、筒状部材３１０を取り囲み、ソレノイドケース３０９に収容された電磁コイル３１１とから構成されている。 The configuration of the discharge capacity control valve 300 will be described in detail.
As shown in FIG. 2, the discharge capacity control valve 300 is disposed in a pressure-sensitive chamber 302 formed in the valve housing 301, receives the suction pressure through the communication hole 301a, and evacuates the inside to provide a spring. A bellows 303 functioning as a pressure sensing means and a communication path between the discharge chamber 120 and the crank chamber 105 while receiving one end portion of the bellows 303 in a valve chamber 312 formed in the valve housing 301. A valve body 304 that opens and closes a valve hole 305 a disposed in 124, a pressure-sensitive rod 304 c at the other end is slidably supported by a support hole 301 b of the valve housing 301, and the other end is connected to a bellows 303; , A valve hole 305a and a valve seat 305b are formed, and a valve seat forming body 305 that is press-fitted and fixed to one end of the accommodation hole 301c of the valve housing 301, and a valve body 304 are integrally formed. The solenoid rod 304a having the movable iron core 306 press-fitted and fixed at one end thereof, the fixed iron core 307 disposed to be opposed to the movable iron core 306 with a predetermined gap therebetween, and between the fixed iron core 307 and the movable iron core 306 are inserted. A spring 308 that biases the movable iron core 306 in the valve opening direction, a cylindrical member 310 that is fixed to the solenoid case 309 by inserting the fixed iron core 307 and the movable iron core 306, and the cylindrical member 310. The electromagnetic coil 311 is enclosed and accommodated in a solenoid case 309.

バルブハウジング３０１は切削性の良好な軟質金属である黄銅で形成されており、弁座形成体３０５は黄銅よりも硬度の高いステンレス鋼で形成されている。弁体３０４はステンレス鋼で構成されている。弁体３０４の弁座当接面３０４ｂは円錐状のテーパ面であり、弁座３０５ｂは平面であり、弁孔３０５ａと弁座３０５ｂとの繋ぎ部は直角を形成している。従って、閉弁時には、弁体３０４の弁座当接面３０４ｂは弁孔３０５ａの開口端部周縁の直角の角部に線接触する。 The valve housing 301 is made of brass, which is a soft metal with good machinability, and the valve seat forming body 305 is made of stainless steel having a hardness higher than that of brass. The valve body 304 is made of stainless steel. The valve seat contact surface 304b of the valve body 304 is a conical tapered surface, the valve seat 305b is a flat surface, and the joint between the valve hole 305a and the valve seat 305b forms a right angle. Accordingly, when the valve is closed, the valve seat abutting surface 304b of the valve body 304 is in line contact with a right-angled corner at the periphery of the opening end of the valve hole 305a.

収容孔３０１ｃの他端部は、弁孔３０５ａと支持孔３０１ｂとの間に配設された、弁孔３０５ａ及び支持孔３０１ｂよりも大径の筒状空間３０１ｅを形成している。弁座形成体３０５の筒状空間３０１ｅに対峙する端面は、漏斗状に窪んでいる。従って筒状空間３０１ｅの弁孔３０５ａ側端部は弁孔３０５ａへ向けて漏斗状に傾斜している。
弁孔３０５ａと筒状空間３０１ｅと支持孔３０１ｂとは同軸に整列している。バルブハウジング３０１に弁孔３０５ａと直交方向に形成された連通孔３０１ｄは、筒状空間３０１ｅと交差すると共に吐出室１２０に連通している。連通孔３０１ｄは筒状空間３０１ｅを介して弁孔３０５ａに連通している。２個の連通孔３０１ｄが、周方向に互いに間隔を隔てて且つ筒状空間３０１ｅの中心軸線Ｘから径方向外方へオフセットして配設されている。前記２個の連通孔３０１ｄの、筒状空間３０１ｅ周壁面に開口する一端は、同一旋回方向へ差し向けられている。連通孔３０１ｄは筒状空間３０１ｅの周壁面に対して接線方向へ差し向けられている。
弁室３１２は、弁孔３０５ａと筒状空間３０１ｅと連通孔３０１ｄとを介して吐出室１２０に連通している。支持孔３０１ｂは筒状空間３０１ｅに連通している。弁体３０４の他端部である感圧ロッド３０４ｃが支持孔３０１ｂに摺動可能に挿通されることにより、ベローズ３０３に連結する弁体３０４の他端は筒状空間３０１ｅから遮断され、ひいては吐出室１２０から遮断されている。弁室３１２は連通孔３０１ｆを介してクランク室１０５と連通している。連通孔３０１ｄ、筒状空間３０１ｅ、弁孔３０５ａ、弁室３１２、連通孔３０１ｆは、吐出室１２０とクランク室１０５との間の連通路１２４の一部を形成している。 The other end of the accommodation hole 301c forms a cylindrical space 301e having a larger diameter than the valve hole 305a and the support hole 301b, which is disposed between the valve hole 305a and the support hole 301b. An end surface of the valve seat forming body 305 facing the cylindrical space 301e is recessed in a funnel shape. Therefore, the end of the cylindrical space 301e on the valve hole 305a side is inclined in a funnel shape toward the valve hole 305a.
The valve hole 305a, the cylindrical space 301e, and the support hole 301b are aligned coaxially. A communication hole 301 d formed in the valve housing 301 in a direction orthogonal to the valve hole 305 a intersects the cylindrical space 301 e and communicates with the discharge chamber 120. The communication hole 301d communicates with the valve hole 305a through the cylindrical space 301e. The two communication holes 301d are arranged spaced apart from each other in the circumferential direction and offset radially outward from the central axis X of the cylindrical space 301e. One ends of the two communication holes 301d that open to the peripheral wall surface of the cylindrical space 301e are directed in the same turning direction. The communication hole 301d is directed in a tangential direction with respect to the peripheral wall surface of the cylindrical space 301e.
The valve chamber 312 communicates with the discharge chamber 120 through the valve hole 305a, the cylindrical space 301e, and the communication hole 301d. The support hole 301b communicates with the cylindrical space 301e. When the pressure-sensitive rod 304c, which is the other end of the valve body 304, is slidably inserted into the support hole 301b, the other end of the valve body 304 connected to the bellows 303 is cut off from the cylindrical space 301e, and thus discharged. It is cut off from the chamber 120. The valve chamber 312 communicates with the crank chamber 105 through the communication hole 301f. The communication hole 301 d, the cylindrical space 301 e, the valve hole 305 a, the valve chamber 312, and the communication hole 301 f form a part of the communication path 124 between the discharge chamber 120 and the crank chamber 105.

弁体３０４の他端に連結し吸入圧力の変化により変位して弁体３０４を駆動する感圧部材であるベローズ３０３を有する自律制御機構と、可動鉄心３０６、固定鉄心３０７、電磁コイル３１１等を有し弁体３０４に電磁力を作用させることにより自律制御機構の吸入圧力制御特性を変化させる外部制御機構とにより、弁体３０４を弁孔開閉方向へ駆動する駆動手段が形成されている。 An autonomous control mechanism having a bellows 303 that is a pressure-sensitive member that is connected to the other end of the valve body 304 and is displaced by a change in suction pressure to drive the valve body 304, a movable iron core 306, a fixed iron core 307, an electromagnetic coil 311, etc. Driving means for driving the valve body 304 in the valve opening / closing direction is formed by an external control mechanism that changes the suction pressure control characteristic of the autonomous control mechanism by applying electromagnetic force to the valve body 304.

弁体３０４に作用する力は図３の式（１）で与えられる。吐出容量制御弁３００においては、電磁コイル３１１への通電量が増加すると吸入圧力が低下する制御特性が得られる。
式（１）のＳｖとＳｒとは実質的に同一値であり、図３の式（１）は図３の式（２）となる。
図３の式（２）から分かるように、吐出容量制御弁３００は、実質的に吐出圧力の影響を受けない吸入圧力制御特性を有している。 The force acting on the valve body 304 is given by equation (1) in FIG. In the discharge capacity control valve 300, a control characteristic is obtained in which the suction pressure decreases as the amount of current supplied to the electromagnetic coil 311 increases.
Sv and Sr in Expression (1) are substantially the same value, and Expression (1) in FIG. 3 becomes Expression (2) in FIG.
As can be seen from the equation (2) in FIG. 3, the discharge capacity control valve 300 has a suction pressure control characteristic that is substantially unaffected by the discharge pressure.

吐出容量制御弁３００においては、連通孔３０１ｄは支持孔３０１ｂよりも大径の筒状空間３０１ｅと交差するので、中グリ加工等の追加の工程を必要としない。筒状空間３０１ｅと連通孔３０１ｄとの交差部に生じた加工バリが残存しても、弁体３０４の他端部である感圧ロッド３０４ｃを支持孔３０１ｂに挿通する作業を阻害しない。
吐出容量制御弁３００が連通路１２４を開くと、吐出室１２０内の冷媒ガスが連通孔３０１ｄを通って筒状空間３０１ｅに流入する。連通路３０１ｄの入口に図示しないフィルターが装着され、冷媒ガスに含まれる異物が除去されるが、フィルターの細孔径は数十ミクロン乃至１００ミクロン程度なので、数ミクロン乃至２０ミクロン程度の大きさの異物はフィルターを通過して筒状空間３０１ｅへ流入する。連通路３０１ｄは筒状空間３０１ｅの中心軸線Ｘから径方向外方へオフセットして配設されているので、図２（ｃ）に矢印で白抜矢印で示すように、吐出室１２０から連通孔３０１ｄを通って筒状空間３０１ｅへ流入した冷媒ガスは、筒状空間３０１ｅ内で旋回する。旋回により生じた遠心力を受けて、冷媒ガスに含まれる異物は筒状空間３０１ｅの周壁面方向へ移動し、支持孔３０１ｂと筒状空間３０１ｅとの接続部から径方向外方へ離れる。この結果、弁体他端部である感圧ロッド３０４ｃと支持孔３０１ｂとの間の微小隙間への異物侵入が防止される。 In the discharge capacity control valve 300, the communication hole 301d intersects the cylindrical space 301e having a diameter larger than that of the support hole 301b, and therefore, an additional process such as a centering process is not required. Even if the machining burr generated at the intersection between the cylindrical space 301e and the communication hole 301d remains, the operation of inserting the pressure-sensitive rod 304c, which is the other end of the valve body 304, into the support hole 301b is not hindered.
When the discharge capacity control valve 300 opens the communication passage 124, the refrigerant gas in the discharge chamber 120 flows into the cylindrical space 301e through the communication hole 301d. A filter (not shown) is attached to the inlet of the communication passage 301d to remove foreign substances contained in the refrigerant gas. Since the filter has a pore diameter of about several tens to 100 microns, foreign substances with a size of about several microns to 20 microns. Passes through the filter and flows into the cylindrical space 301e. Since the communication passage 301d is disposed to be offset radially outward from the central axis X of the cylindrical space 301e, as shown by the white arrow in FIG. The refrigerant gas that has flowed into the cylindrical space 301e through 301d turns in the cylindrical space 301e. In response to the centrifugal force generated by the turning, the foreign matter contained in the refrigerant gas moves toward the peripheral wall surface of the cylindrical space 301e, and moves away from the connecting portion between the support hole 301b and the cylindrical space 301e radially outward. As a result, entry of foreign matter into the minute gap between the pressure sensitive rod 304c, which is the other end of the valve body, and the support hole 301b is prevented.

弁孔３０５ａと弁孔開口部周囲の弁座３０５ｂとをバルブハウジング３０１とは別体の弁座形成体３０５に形成し、弁座形成体３０５をバルブハウジング３０１に嵌合固定して、筒状空間３０１ｅを形成することにより、大径の筒状空間３０１ｅを容易に形成することができる。大径の筒状空間３０１ｅの形成により、連通孔３０１ｄの筒状空間中心軸線Ｘから径方向外方へのオフセット量を大きくすることができるので、弁体他端部である感圧ロッド３０４ｃと支持孔３０１ｂとの間の微小隙間への異物侵入がより効果的に防止される。 The valve hole 305a and the valve seat 305b around the opening of the valve hole are formed in a valve seat forming body 305 separate from the valve housing 301, and the valve seat forming body 305 is fitted and fixed to the valve housing 301 to form a tubular shape. By forming the space 301e, a large-diameter cylindrical space 301e can be easily formed. By forming the large-diameter cylindrical space 301e, it is possible to increase the offset amount radially outward from the cylindrical space center axis X of the communication hole 301d, so that the pressure-sensitive rod 304c, which is the other end of the valve body, Foreign matter intrusion into the minute gap between the support hole 301b is more effectively prevented.

周方向に互いに間隔を隔てて且つ筒状空間３０１ｅの周壁面に開口する一端を同一旋回方向へ差し向けて複数の連通孔３０１ｄが配設されることにより、筒状空間３０１ｅ内での旋回流の発生が促進され、弁体他端部である感圧ロッド３０４ｃと支持孔３０１ｂとの間の微小隙間への異物侵入がより効果的に防止される。
連通孔３０１ｄが筒状空間３０１ｅの周壁面に対して接線方向へ差し向けられることにより、筒状空間３０１ｅ内での旋回流の発生が促進され、弁体他端部である感圧ロッド３０４ｃと支持孔３０１ｂとの間の微小隙間への異物侵入がより効果的に防止される。 A plurality of communication holes 301d are arranged with one end opened at the circumferential wall surface of the cylindrical space 301e spaced apart from each other in the circumferential direction in the same swiveling direction, whereby a swirling flow in the cylindrical space 301e Is promoted, and foreign matter intrusion into the minute gap between the pressure-sensitive rod 304c, which is the other end of the valve body, and the support hole 301b is more effectively prevented.
The communication hole 301d is directed in a tangential direction with respect to the peripheral wall surface of the cylindrical space 301e, whereby the generation of a swirling flow in the cylindrical space 301e is promoted, and the pressure sensing rod 304c, which is the other end of the valve body, Foreign matter intrusion into the minute gap between the support hole 301b is more effectively prevented.

筒状空間３０１ｅの弁孔側端部を弁孔３０５ａへ向けて漏斗状に傾斜させることにより、弁孔開放時の連通孔３０１ｄから弁孔３０５ａへの冷媒ガスの流れがスムーズになる。この結果、筒状空間３０１ｅからの異物の排出性能が向上する。 By inclining the end portion on the valve hole side of the cylindrical space 301e toward the valve hole 305a in a funnel shape, the flow of the refrigerant gas from the communication hole 301d to the valve hole 305a when the valve hole is opened becomes smooth. As a result, the foreign matter discharge performance from the cylindrical space 301e is improved.

弁体３０４がバルブハウジング３０１よりも硬度の高い材料で形成されているので、弁体他端部である感圧ロッド３０４ｃと支持孔３０１ｂとの間の微小隙間へ万一異物が侵入しても、異物は弁体３０４よりも硬度の低いバルブハウジング３０１側に食い込みながら前記隙間から排出されるので、弁体他端部である感圧ロッド３０４ｃひいては弁体３０４の動きをあまり阻害せず、吐出容量制御弁３００の作動をあまり阻害しない。弁体３０４に侵炭法、窒化法、硬化クロムメッキ法等の方法により表面硬化処理を施しても良い。弁体他端部である感圧ロッド３０４ｃと支持孔３０１ｂとの間の微小隙間へ万一異物が侵入した場合の、弁体３０４の動作不良が更に効果的に抑制される。 Since the valve body 304 is formed of a material having a hardness higher than that of the valve housing 301, even if a foreign object enters the minute gap between the pressure-sensitive rod 304c, which is the other end of the valve body, and the support hole 301b. Since the foreign matter bites into the valve housing 301 having a hardness lower than that of the valve body 304 and is discharged from the gap, the pressure sensing rod 304c, which is the other end of the valve body, and thus the movement of the valve body 304 are not significantly disturbed and discharged. The operation of the displacement control valve 300 is not significantly inhibited. The valve body 304 may be subjected to surface hardening treatment by a method such as a carburizing method, a nitriding method, or a hardened chrome plating method. In the unlikely event that foreign matter enters a minute gap between the pressure-sensitive rod 304c, which is the other end of the valve body, and the support hole 301b, the malfunction of the valve body 304 is further effectively suppressed.

図４に示すように、弁体を開閉方向に駆動する駆動手段を、冷媒回路の二つの圧力監視点である、吐出室１２０とマフラ空間１２１の圧力差の変化により変位して弁体を駆動する差圧検知部材４０１を備える自律制御機構と、弁体に電磁力を作用させることにより前記自律制御機構の差圧制御特性を変化させる外部制御機構とにより構成した吐出容量制御弁４００にも、前述の技術は適用可能である。
吐出容量制御弁４００は、外部環境に応じて、圧力監視点間の圧力差を最適制御することができる。 As shown in FIG. 4, the driving means for driving the valve body in the opening / closing direction is displaced by the change in the pressure difference between the discharge chamber 120 and the muffler space 121, which are two pressure monitoring points of the refrigerant circuit, thereby driving the valve body. The discharge capacity control valve 400 constituted by the autonomous control mechanism including the differential pressure detecting member 401 and the external control mechanism that changes the differential pressure control characteristic of the autonomous control mechanism by applying electromagnetic force to the valve body, The techniques described above are applicable.
The discharge capacity control valve 400 can optimally control the pressure difference between the pressure monitoring points according to the external environment.

弁座形成体３０５には吐出圧力とクランク圧力の差圧が作用するので、弁座形成体３０５をバルブハウジング３０１に圧入固定した後、かしめ等の弁座形成体脱落防止策を施しても良い。特に二酸化炭素を圧縮する場合には好適である。 Since the differential pressure between the discharge pressure and the crank pressure acts on the valve seat forming body 305, after the valve seat forming body 305 is press-fitted and fixed to the valve housing 301, measures to prevent the valve seat forming body from falling off such as caulking may be taken. . It is particularly suitable when compressing carbon dioxide.

バルブハウジング３１１と弁座形成体３０５とを同種材料で形成しても良い。
弁座形成体３０５を表面硬化処理しても良い。弁座の磨耗を防止することができる。 The valve housing 311 and the valve seat forming body 305 may be formed of the same kind of material.
The valve seat forming body 305 may be subjected to surface hardening treatment. Wear of the valve seat can be prevented.

本発明は、上記実施例に限定されず、弁孔径が支持孔径よりも大きく、吐出圧力が増加すると制御吸入圧力が上昇する吐出容量制御弁、弁孔径が支持孔径よりも小さく、吐出圧力が増加すると制御吸入圧力が低下する吐出容量制御弁、低圧側の２点間の差圧を制御する吐出容量制御弁、高圧側と低圧側の２点間の差圧を制御する吐出容量制御弁、開位置と閉位置の二位置制御の吐出容量制御弁、モータ駆動の可変容量圧縮機に使用される吐出容量制御弁、現状のＲ１３４ａに代えてＣＯ２やＲ１５２ａを圧縮する可変容量圧縮機に使用される吐出容量制御弁等に広く利用可能である。 The present invention is not limited to the above-described embodiment, and a discharge capacity control valve in which the valve hole diameter is larger than the support hole diameter and the control suction pressure increases as the discharge pressure increases. The valve hole diameter is smaller than the support hole diameter and the discharge pressure increases. Then, a discharge capacity control valve for reducing the control suction pressure, a discharge capacity control valve for controlling the differential pressure between the two points on the low pressure side, a discharge capacity control valve for controlling the differential pressure between the two points on the high pressure side and the low pressure side, Displacement capacity control valve for two-position control of position and closed position, discharge capacity control valve used for motor-driven variable capacity compressor, used for variable capacity compressor that compresses CO2 and R152a instead of current R134a It can be widely used for discharge capacity control valves and the like.

本発明の第１実施例に係る吐出容量制御弁を備える可変容量斜板式圧縮機の断面図である。It is sectional drawing of the variable capacity | capacitance swash plate type compressor provided with the discharge capacity control valve based on 1st Example of this invention. 本発明の第１実施例に係る吐出容量制御弁の断面図である。（ａ）は全体図であり、（ｂ）は閉弁状態での部分拡大断面図であり、（ｃ）は（ｂ）の弁体を除いたｃ−ｃ矢視図である。It is sectional drawing of the discharge capacity | capacitance control valve which concerns on 1st Example of this invention. (A) is a general view, (b) is a partially enlarged sectional view in a valve-closed state, and (c) is a cc arrow view excluding the valve body of (b). 本発明の第１実施例に係る吐出容量制御弁の制御特性式を示す図である。It is a figure which shows the control characteristic type | formula of the discharge capacity | capacitance control valve concerning 1st Example of this invention. 本発明の第２実施例に係る吐出容量制御弁の断面図である。It is sectional drawing of the discharge capacity | capacitance control valve which concerns on 2nd Example of this invention.

符号の説明Explanation of symbols

１００ 可変容量斜板式圧縮機
１０５ クランク室
１０６ 駆動軸
１０７ 斜板
１１７ ピストン
１１９ 吸入室
１２０ 吐出室
３００ 容量制御弁
３０１ｄ 連通孔
３０１ｅ 筒状空間
３０５ 弁座形成体 100 variable capacity swash plate compressor 105 crank chamber 106 drive shaft 107 swash plate 117 piston 119 suction chamber 120 discharge chamber 300 capacity control valve 301d communication hole 301e cylindrical space 305 valve seat forming body

Claims (9)

クランク室と連通し且つ弁孔と連通孔とを介して吐出圧領域と連通する弁室と、弁室内に配設された一端部が弁孔を開閉する弁体と、弁体の他端部を摺動可能に支持する支持孔を有し弁体の他端を吐出圧領域から遮断して弁体を収容するバルブハウジングと、弁体を弁孔開閉方向へ駆動する駆動手段とを備え、弁孔と支持孔との間に筒状空間が形成され、筒状空間の少なくとも支持孔寄りの部位は弁孔及び支持孔よりも大径に形成され、連通孔は筒状空間の前記大径に形成された部位に連通し、筒状空間を介して連通孔と弁孔とが連通し、弁室は弁孔と筒状空間と連通孔とを介して吐出圧領域と連通し、連通孔は筒状空間の中心軸線から径方向外方へオフセットして配設されていることを特徴とする可変容量圧縮機の吐出容量制御弁。 A valve chamber that communicates with the crank chamber and communicates with the discharge pressure region via the valve hole and the communication hole, a valve body having one end portion disposed in the valve chamber for opening and closing the valve hole, and the other end portion of the valve body A valve housing that has a support hole that slidably supports the valve body and shuts off the other end of the valve body from the discharge pressure region and accommodates the valve body, and driving means that drives the valve body in the valve hole opening and closing direction, A cylindrical space is formed between the valve hole and the support hole , at least a portion near the support hole of the cylindrical space is formed to have a larger diameter than the valve hole and the support hole, and the communication hole is the large diameter of the cylindrical space. The communication hole and the valve hole communicate with each other through the cylindrical space, the valve chamber communicates with the discharge pressure region through the valve hole, the cylindrical space and the communication hole, and the communication hole. Is a discharge capacity control valve for a variable capacity compressor, which is arranged to be offset radially outward from the central axis of the cylindrical space. 弁孔と弁孔開口部周囲の弁座とはバルブハウジングとは別体の弁座形成体に形成され、弁座形成体がバルブハウジングに嵌合固定されて、筒状空間が形成されていることを特徴とする請求項１に記載の可変容量圧縮機の吐出容量制御弁。 The valve hole and the valve seat around the valve hole opening are formed in a valve seat forming body separate from the valve housing, and the valve seat forming body is fitted and fixed to the valve housing to form a cylindrical space. The discharge capacity control valve of the variable capacity compressor according to claim 1. 周方向に互いに間隔を隔てて且つ筒状空間の周壁面に開口する一端を同一旋回方向へ差し向けて配設された複数の連通孔を備えることを特徴とする請求項１又は２に記載の可変容量圧縮機の吐出容量制御弁。 The apparatus according to claim 1, further comprising: a plurality of communication holes arranged at intervals in the circumferential direction and having one end opened to the circumferential wall surface of the cylindrical space directed in the same turning direction. Discharge capacity control valve for variable capacity compressor. 連通孔は筒状空間の周壁面に対して接線方向へ差し向けられていることを特徴とする請求項１乃至３の何れか１項に記載の可変容量圧縮機の吐出容量制御弁。 The discharge capacity control valve for a variable capacity compressor according to any one of claims 1 to 3, wherein the communication hole is directed in a tangential direction with respect to the peripheral wall surface of the cylindrical space. 筒状空間の弁孔側端部は弁孔へ向けて漏斗状に傾斜していることを特徴とする請求項１乃至４の何れか１項に記載の可変容量圧縮機の吐出容量制御弁。 The discharge capacity control valve for a variable capacity compressor according to any one of claims 1 to 4, wherein an end portion on the valve hole side of the cylindrical space is inclined in a funnel shape toward the valve hole. 弁体はバルブハウジングよりも硬度の高い材料で形成されていることを特徴とする請求項１乃至５の何れか１項に記載の可変容量圧縮機の吐出容量制御弁。 6. The discharge capacity control valve for a variable capacity compressor according to claim 1, wherein the valve body is made of a material having a hardness higher than that of the valve housing. 弁体が表面硬化処理されていることを特徴とする請求項１乃至６の何れか１項に記載の可変容量圧縮機の吐出容量制御弁。 The discharge capacity control valve for a variable capacity compressor according to any one of claims 1 to 6, wherein the valve body is subjected to a surface hardening treatment. 駆動手段は、弁体の他端に連結し、吸入圧力の変化により変位して弁体を駆動する感圧部材を有する自律制御機構と、弁体に電磁力を作用させることにより自律制御機構の吸入圧力制御特性を変化させる外部制御機構とを備えていることを特徴とする請求項１乃至７の何れか１項に記載の可変容量圧縮機の吐出容量制御弁。 The drive means is connected to the other end of the valve body, and has an autonomous control mechanism having a pressure-sensitive member that is displaced by a change in suction pressure to drive the valve body, and an autonomous control mechanism by applying an electromagnetic force to the valve body. 8. The discharge capacity control valve for a variable capacity compressor according to claim 1, further comprising an external control mechanism that changes suction pressure control characteristics. 駆動手段は、弁体の他端に連結し、冷媒回路の二つの圧力監視点間の圧力差の変化により変位して弁体を駆動する感圧部材を有する自律制御機構と、弁体に電磁力を作用させることにより自律制御機構の差圧制御特性を変化させる外部制御機構とを備えていることを特徴とする請求項１乃至７の何れか１項に記載の可変容量圧縮機の吐出容量制御弁。 The driving means is connected to the other end of the valve body, and has an autonomous control mechanism having a pressure-sensitive member that is displaced by a change in pressure difference between two pressure monitoring points of the refrigerant circuit to drive the valve body, The discharge capacity of the variable capacity compressor according to any one of claims 1 to 7, further comprising an external control mechanism that changes a differential pressure control characteristic of the autonomous control mechanism by applying a force. Control valve.
JP2006125346A 2006-04-28 2006-04-28 Variable displacement compressor discharge capacity control valve Expired - Fee Related JP4607047B2 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000018420A (en) * 1998-04-27 2000-01-18 Toyota Autom Loom Works Ltd Control valve
JP2002161853A (en) * 2000-11-30 2002-06-07 Mitsubishi Heavy Ind Ltd Capacity control valve of compressor
JP2002276545A (en) * 2001-01-12 2002-09-25 Toyota Industries Corp Control valve for variable displacement compressor
JP2003148338A (en) * 2001-11-07 2003-05-21 Zexel Valeo Climate Control Corp Control valve for variable displacement compressor
JP2004162640A (en) * 2002-11-14 2004-06-10 Toyota Industries Corp Control valve for variable displacement compressor
JP2004257328A (en) * 2003-02-26 2004-09-16 Calsonic Kansei Corp Variable displacement compressor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000018420A (en) * 1998-04-27 2000-01-18 Toyota Autom Loom Works Ltd Control valve
JP2002161853A (en) * 2000-11-30 2002-06-07 Mitsubishi Heavy Ind Ltd Capacity control valve of compressor
JP2002276545A (en) * 2001-01-12 2002-09-25 Toyota Industries Corp Control valve for variable displacement compressor
JP2003148338A (en) * 2001-11-07 2003-05-21 Zexel Valeo Climate Control Corp Control valve for variable displacement compressor
JP2004162640A (en) * 2002-11-14 2004-06-10 Toyota Industries Corp Control valve for variable displacement compressor
JP2004257328A (en) * 2003-02-26 2004-09-16 Calsonic Kansei Corp Variable displacement compressor

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