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    • 3. 发明授权
    • Vane compressor having a movable pressure plate and a unitary front head
and cam ring
    • 叶片式压缩机具有可移动的压力板和一体的前头和凸轮环
    • US5924856A
    • 1999-07-20
    • US755262
    • 1996-11-22
    • Toshihiro MurayamaShunji MutaTomoyasu Takahashi
    • Toshihiro MurayamaShunji MutaTomoyasu Takahashi
    • F01C21/10F04C18/344
    • F04C18/3446F01C21/10
    • A vane compressor has at least one of a front-side member and a rear-side member thereof formed with a suction chamber opening toward a cam ring, which has a substantially arcuate or annular shape and extends around a drive shaft. The cam ring has one end face formed with a refrigerant inlet port for supplying a low-pressure refrigerant into compression chambers formed between vanes. Alternatively, a front head is arranged on one end face of the cam ring. A shell encloses another end and an outer peripheral surface of the cam ring and holds a movable plate in a state opposed to the other end face of the cam ring such that the movable plate can be moved along a central axis of the drive shaft. An inside of the shell and the movable plate defines a high-pressure chamber therein. Each adjacent pair of the vanes, the front head, and the movable plate defines a compression chamber therein. The shell has a front-side end extending to an outer peripheral surface of the front head and fixed to the outer peripheral surface of the front head. The outer peripheral surface of the cam ring and an inner peripheral surface of the front-side end of the shell defines a low-pressure space therebetween. The cam ring is formed with an inlet port opening through an outer peripheral wall thereof for supplying a low-pressure refrigerant into the compression chambers during a suction stroke.
    • 叶片式压缩机具有至少一个前侧构件和后侧构件,其中形成有朝向凸轮环开口的吸入室,该抽吸室具有基本上为弧形或环形的形状并围绕驱动轴延伸。 凸轮环具有形成有用于将低压制冷剂供给到形成在叶片之间的压缩室中的制冷剂入口的一个端面。 或者,在凸轮环的一个端面上设置有前头。 壳体包围凸轮环的另一端和外周表面,并且将可动板保持在与凸轮环的另一端面相对的状态,使得可动板可以沿着驱动轴的中心轴线移动。 壳体和可动板的内部在其中限定高压室。 每个相邻的一对叶片,前头和可动板在其中限定一个压缩室。 外壳具有延伸到前头的外周表面并固定到前头的外周表面的前侧端。 凸轮环的外周面和壳体的前侧端部的内周面在它们之间限定了低压空间。 凸轮环形成有通过其外周壁开口的入口,用于在吸入冲程期间将低压制冷剂供应到压缩室中。
    • 4. 发明授权
    • Vane compressor having a single suction groove formed in a side member
which is in direct contact with a cam ring
    • 叶片压缩机具有形成在与凸轮环直接接触的侧构件中的单个吸入槽
    • US6022204A
    • 2000-02-08
    • US156165
    • 1998-09-17
    • Toshihiro MurayamaShunji MutaTomoyasu Takahashi
    • Toshihiro MurayamaShunji MutaTomoyasu Takahashi
    • F01C21/10F04C18/344
    • F04C18/3446F01C21/10
    • A vane compressor has at least one of a front-side member and a rear-side member thereof formed with a suction chamber opening toward a cam ring, which has a substantially arcuate or annular shape and extends around a drive shaft. The cam ring has one end face formed with a refrigerant inlet port for supplying a low-pressure refrigerant into compression chambers formed between vanes. Alternatively, a front head is arranged on one end face of the cam ring. A shell encloses another end and an outer peripheral surface of the cam ring and holds a movable plate in a state opposed to the other end face of the cam ring such that the movable plate can be moved along a central axis of the drive shaft. An inside of the shell and the movable plate defines a high-pressure chamber therein. Each adjacent pair of the vanes, the front head, and the movable plate defines a compression chamber therein. The shell has a front-side end extending to an outer peripheral surface of the front head and fixed to the outer peripheral surface of the front head. The outer peripheral surface of the cam ring and an inner peripheral surface of the front-side end of the shell defines a low-pressure space therebetween. The cam ring is formed with an inlet port opening through an outer peripheral wall thereof for supplying a low-pressure refrigerant into the compression chambers during a suction stroke.
    • 叶片式压缩机具有至少一个前侧构件和后侧构件,其中形成有朝向凸轮环开口的吸入室,该抽吸室具有基本上为弧形或环形的形状并围绕驱动轴延伸。 凸轮环具有形成有用于将低压制冷剂供给到形成在叶片之间的压缩室中的制冷剂入口的一个端面。 或者,在凸轮环的一个端面上设置有前头。 壳体包围凸轮环的另一端和外周表面,并且将可动板保持在与凸轮环的另一端面相对的状态,使得可动板可以沿着驱动轴的中心轴线移动。 壳体和可动板的内部在其中限定高压室。 每个相邻的一对叶片,前头和可动板在其中限定一个压缩室。 外壳具有延伸到前头的外周表面并固定到前头的外周表面的前侧端。 凸轮环的外周面和壳体的前侧端部的内周面在它们之间限定了低压空间。 凸轮环形成有通过其外周壁开口的入口,用于在吸入冲程期间将低压制冷剂供应到压缩室中。
    • 7. 发明申请
    • Control valve for variable displacement compressor
    • 变排量压缩机控制阀
    • US20050254961A1
    • 2005-11-17
    • US11187441
    • 2005-07-20
    • Yuji KawamuraKazutaka KowadaKazuhiro IrieShunji MutaYoshie Sato
    • Yuji KawamuraKazutaka KowadaKazuhiro IrieShunji MutaYoshie Sato
    • F04B27/18F04B1/26F04B1/12
    • F04B27/1804F04B2027/1813F04B2027/1827F04B2027/1831F04B2027/1854F04B2027/1859
    • In order to reduce the amount of refrigerant circulating within a variable displacement compressor to thereby improve compression efficiency, a control valve is configured to comprise a ball valve for controlling the flow rate of refrigerant flowing from a discharge chamber to a crankcase, a spool valve for controlling the flow rate of refrigerant flowing from the crankcase to a suction chamber, a diaphragm for sensing suction pressure, and a solenoid for setting the suction pressure, wherein the spool valve starts flow rate control after the ball valve is fully closed or nearly fully closed, and the ball valve starts flow rate control after the valve lift of the spool valve is minimized or nearly minimized. As a result, a region is almost eliminated in which the ball valve and the spool valve are both open simultaneously during switching of flow rate control between the ball valve and the spool valve, which makes it possible to minimize the flow rate of the refrigerant circulating within the compressor without contributing to a refrigerating operation, to thereby improve the efficiency of the compressor.
    • 为了减少在可变排量压缩机内循环的制冷剂量,从而提高压缩效率,控制阀被构造成包括用于控制从排出室流向曲轴箱的制冷剂的流量的球阀,用于 控制从曲轴箱流到吸入室的制冷剂的流量,用于感测吸入压力的隔膜和用于设定吸入压力的螺线管,其中滑阀在球阀完全关闭或几乎完全关闭之后启动流量控制 ,并且在阀芯的阀升程最小化或几乎最小化之后,球阀启动流量控制。 结果,几乎消除了在球阀和滑阀之间的流量控制切换期间球阀和滑阀同时打开的区域,这使得可以使制冷剂循环的流量最小化 在压缩机内不对制冷操作有贡献,从而提高压缩机的效率。
    • 9. 发明授权
    • Expansion device
    • 扩充装置
    • US06334324B1
    • 2002-01-01
    • US09743024
    • 2001-01-04
    • Shunji MutaHiroshi KanaiKenji IijimaShunichi Furuya
    • Shunji MutaHiroshi KanaiKenji IijimaShunichi Furuya
    • F25B4104
    • F25B9/008F25B40/00F25B41/062F25B49/005F25B2309/061F25B2341/063F25B2400/0411
    • An expansion device capable of preventing an abnormal increase in the high-pressure in a freezing cycle and having, as an integrated unit thereof, a mechanism capable of quickly responding to an abnormal increase in the high-pressure and the low-pressure is provided. A means for displacement (bellows) 28 which becomes displaced in correspondence to the high-pressure is linked to a valve element 24 of a restrictor valve mechanism 32 to displace a rod 34 provided with a safety valve mechanism 33. If the high-pressure reaches a level equal to or higher than a first specific pressure (the limit to the normal operating pressure), a first portion 26 of the safety valve mechanism 33 becomes disengaged from a relief hole 27 that communicates between a high-pressure space 29 and a low-pressure passage 31 to be replaced by a second portion 25 which allows passage through the relief hole 27, thereby leaking the coolant in the high-pressure space 29 to the low-pressure passage 31 and preventing a further increase in the high-pressure. In addition, a low-pressure side rupture disk mechanism 40 that becomes ruptured if the low-pressure reaches a level equal to a second specific pressure to communicate between the low-pressure passage 31 and the atmosphere is provided at the low-pressure passage 31. A high-pressure side rupture disk mechanism 50 that becomes ruptured if the high-pressure reaches a level equal to or higher than a third specific pressure to communicate between the high-pressure passage 30 and the atmosphere is provided at the high-pressure passage 30.
    • 提供一种能够防止冷冻循环中的高压异常增加的膨胀装置,并且具有能够快速响应高压和低压异常增加的机构的集成单元。 与限制阀机构32的阀元件24相连接,与高压相对应地移动的位移装置(波纹管)28连接到设置有安全阀机构33的杆34上。如果高压达到 等于或高于第一比压(正常工作压力的极限)的水平,安全阀机构33的第一部分26与高压空间29和低压空间29之间连通的排放孔27脱离 压力通道31被允许通过释放孔27的第二部分25代替,从而将高压空间29中的冷却剂泄漏到低压通道31并防止高压进一步增加。 另外,如果低压侧破裂盘机构40在低压通路31设置低压通路31和大气之间时,如果低压达到等于第二比压的水平而连通的低压侧破裂盘机构40 高压侧破裂盘机构50,如果在高压通路30和大气之间高压达到等于或高于第三比压的连通状态的高压侧破裂盘机构50, 30。