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    • 1. 发明授权
    • Bellows-type pressure responsive valve
    • 波纹管式压力响应阀
    • US06250600B1
    • 2001-06-26
    • US09554256
    • 2000-05-11
    • Kiyoshi KumagaiIchiro OhkawaraTomoo OkadaShigeyuki Hidaka
    • Kiyoshi KumagaiIchiro OhkawaraTomoo OkadaShigeyuki Hidaka
    • F16K31165
    • G05D16/0619F04B27/1804
    • A bellows-type pressure responsive valve comprising bellows 66 of a closed structure as a pressure sensing element adapted to vary an opening amount of the valve by transmitting expansions and contractions of the bellows 66 to a valve body 61 by means of a valve rod 65 which is supported on a valve housing 51 so as to move in a valve lifting direction, characterized in that the bellows 66 and the valve rod 65 are spherically connected by means of a spherical coupling structure which is incorporated at a connecting portion of the bellows 66 and the valve rod 65 and composed of a ball 77 which is rotatably disposed coaxially with the valve rod 65, and a spherical recess 78 which is formed at a closed end face 67a of a bellows body 67 of the bellows 66 at a central position thereof. With this structure, centripetal motions of the bellows and the valve rod are automatically effected by means of the spherical coupling between the bellows and the valve rod. Therefore, even though the bellows is weaving or inclined, the unsymmetrical abutment between the bellows and the valve rod can be avoided. Further, forces based on the weaving of the bellows in directions intersecting the valve lifting direction, that is, other directions than the valve lifting direction will be absorbed by the spherical movement of the first spherical coupling structure. Thus, the forces in the other directions than the valve lifting direction will not be transmitted to the valve rod, the hysteresis in the valve motions will be minimized, and a high controlling accuracy can be obtained.
    • 一种波纹管型压力响应阀,包括封闭结构的波纹管66,其作为压力感测元件,适于通过阀杆65将波纹管66的膨胀和收缩传递到阀体61来改变阀的开启量,阀杆65 被支撑在阀壳体51上以沿阀提升方向移动,其特征在于,波纹管66和阀杆65通过球形联接结构球形连接,球形联接结构结合在波纹管66的连接部分和 阀杆65由与阀杆65同轴地可旋转地设置的球77构成,球形凹部78形成在波纹管66的波纹管体67的中心位置的封闭端面67a处。 利用这种结构,波纹管和阀杆的向心运动通过波纹管和阀杆之间的球形联接自动实现。 因此,即使波纹管编织或倾斜,也可以避免波纹管与阀杆之间的不对称邻接。 此外,基于波纹管在与气门提升方向相交的方向(即,比气门提升方向的其他方向)的编织的力将被第一球形联轴节结构的球形运动所吸收。 因此,除阀提升方向以外的其他方向上的力不会传递到阀杆,阀运动中的滞后将被最小化,并且可以获得高的控制精度。
    • 3. 发明授权
    • Control valve for variable displacement compressor
    • 变排量压缩机控制阀
    • US06334759B1
    • 2002-01-01
    • US09565076
    • 2000-05-04
    • Morio KanekoIchiro OhkawaraMasaki OtaKen SuitoMasanori SonobeTomoji Tarutani
    • Morio KanekoIchiro OhkawaraMasaki OtaKen SuitoMasanori SonobeTomoji Tarutani
    • F04B1704
    • F04B27/1804F04B2027/1813F04B2027/1827F04B2027/1831F04B2027/185F04B2027/1859
    • A valve housing of the control valve has a communication passage communicating a suction port of the compressor with a crank chamber of the compressor. A main valve is provided in the valve housing for opening and closing the communication passage. A spring member resiliently biases the main valve toward its closed position. A pressure actuated unit moves the main valve toward the open position by receiving a suction pressure of the compressor. A flow adjustment valve is disposed in the valve housing for adjusting an open degree of a leak passage and receives the discharge pressure exerting a force on the flow adjustment valve toward its closed position. The flow adjustment valve increases a leak flow rate of a fluid flowing from a discharge port of the compressor to a crank chamber through a leak passage when the compressor provides a lower discharge pressure. A correction spring is disposed between the main valve and the flow adjustment valve. The correction spring resiliently biases a valve element of the main valve toward the open position and increases in spring force with transfer of a valve element of the flow adjustment valve toward its closed position.
    • 控制阀的阀壳具有将压缩机的吸入口与压缩机的曲轴室连通的连通通道。 主阀设置在阀壳体中,用于打开和关闭连通通道。 弹簧构件将主阀弹性偏压到其关闭位置。 压力致动单元通过接收压缩机的吸入压力将主阀移动到打开位置。 流量调节阀设置在阀壳体中,用于调节泄漏通道的开度,并将流量调节阀上的压力接收到其关闭位置。 当压缩机提供较低的排出压力时,流量调节阀增加了从压缩机的排出口流向曲轴室的流体的泄漏流量。 校正弹簧设置在主阀和流量调节阀之间。 校正弹簧将主阀的阀元件弹性地偏压到打开位置,并且通过将流量调节阀的阀元件转移到其关闭位置而增加弹簧力。
    • 4. 发明授权
    • Control valve for variable displacement compressor
    • 变排量压缩机控制阀
    • US06332757B1
    • 2001-12-25
    • US09565127
    • 2000-05-04
    • Morio KanekoIchiro OhkawaraMasaki OtaKen SuitouKenta NishimuraTaku Adaniya
    • Morio KanekoIchiro OhkawaraMasaki OtaKen SuitouKenta NishimuraTaku Adaniya
    • F04B126
    • F04B27/1804F04B2027/1813F04B2027/1831F04B2027/1854F04B2027/1859F05C2251/08
    • A valve housing has a communication passage communicating a suction port of the compressor with a crank chamber of the compressor. A valve element opens and closes the communication passage, and a spring member resiliently biases the valve element toward the closed position. A pressure actuated unit moves the valve element toward the open position by a suction pressure of the compressor. The spring member includes a spring made of a temperature responsive material. The spring decreases in its resilient force in an opening direction of the valve element with increase of an outer-air temperature. The spring member has a primary spring made of an ordinary resilient material for resiliently biasing the valve element toward the closed position and a correction spring made of a material having a temperature positive characteristic. The correction spring provides a correction spring force smaller than a primary force of the primary spring in the opposite direction to the primary force. The combined spring force of the primary spring and the correction spring acting on the valve element.
    • 阀壳体具有将压缩机的吸入口与压缩机的曲轴室连通的连通通道。 阀元件打开和关闭连通通道,并且弹簧构件弹性地偏压阀元件朝向关闭位置。 压力驱动单元通过压缩机的吸入压力将阀元件移向打开位置。 弹簧构件包括由温度响应材料制成的弹簧。 随着外部空气温度的增加,弹簧在阀元件的打开方向上的弹性减小。 弹簧构件具有由普通弹性材料制成的弹簧弹簧弹簧偏压阀元件朝向关闭位置的弹簧构件和由具有温度正特性的材料制成的校正弹簧。 校正弹簧提供的校正弹簧力小于主弹簧的主力与主力相反的方向。 主弹簧的组合弹簧力和作用在阀元件上的校正弹簧。