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公开(公告)号：US06986498B2
公开(公告)日：2006-01-17
申请号：US10347729
申请日：2003-01-21
申请人： Hisatoshi Hirota , Tokumi Tsugawa , Yuusuke Inoue
发明人： Hisatoshi Hirota , Tokumi Tsugawa , Yuusuke Inoue
IPC分类号： F16K31/12
CPC分类号： F25B41/062 , F16K31/406 , F25B9/008 , F25B2309/061 , F25B2341/0671 , F25B2600/2505
摘要： A differential pressure valve simplified in construction includes a piston integrally formed with a main valve element and arranged on the upstream side of a main valve to define a chamber for introducing refrigerant from an inlet port. The piston has an orifice and a refrigerant passage for communicating with a chamber on a back surface side of the piston. The chamber is configured such that it can be connected, via a refrigerant passage and a pilot valve element, to a chamber on the downstream side of the main valve, which communicates with an outlet port.
摘要翻译： 简化构造的差压阀包括与主阀元件整体形成并且设置在主阀的上游侧的活塞，以限定用于从入口引入制冷剂的室。 活塞具有孔口和制冷剂通道，用于与活塞的背面侧上的腔室连通。 该室被构造成使得其可以经由制冷剂通道和先导阀元件连接到与出口连通的主阀的下游侧的室。
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公开(公告)号：US20050276700A1
公开(公告)日：2005-12-15
申请号：US11148300
申请日：2005-06-09
申请人： Hisatoshi Hirota
发明人： Hisatoshi Hirota
CPC分类号： F04B27/1804 , F04B49/225 , F04B2027/1813 , F04B2027/1827 , F04B2027/1854 , F04B2027/1872 , F04B2027/1895
摘要： To provide a control valve for a variable displacement compressor, which can be realized with a simple construction, while being equipped with the function of a check valve to be disposed at an outlet port of the compressor. The control valve for a variable displacement compressor includes a main valve that sets a cross-sectional area-fixed passage in which the passage cross-sectional area thereof is substantially constant when refrigerant flows between a discharge chamber and an outlet port of the compressor, and closes the cross-sectional area-fixed passage due to inversion of the magnitudes of pressure across the cross-sectional area-fixed passage when the compressor is not in operation, a pilot valve that controls the flow rate of refrigerant flowing from the discharge chamber to a crankcase in a manner interlocked with the differential pressure across the cross-sectional area-fixed passage received by the main valve, and a solenoid that is capable of setting a valve lift of the pilot valve by an external signal. The pilot valve controls the flow rate of refrigerant allowed to flow into the crankcase so as to make constant the differential pressure across the cross-sectional area-fixed passage, to thereby provide control such that the flow rate of refrigerant allowed to flow to the outlet port of the compressor is constant.
摘要翻译： 提供一种用于可变排量压缩机的控制阀，其可以以简单的结构实现，同时具有设置在压缩机的出口处的止回阀的功能。 用于可变排量压缩机的控制阀包括主阀，当制冷剂在压缩机的排出室和出口之间流动时，设定横截面面积固定通道，其中通道横截面面积大致恒定， 当压缩机不运行时，由于横截面积固定通道的压力大小的反转而封闭横截面积固定通道;控制从排出室流动的制冷剂流量的先导阀 与主阀接收的横截面积固定通道的压差互锁的曲轴箱，以及能够通过外部信号设定先导阀的气门升程的螺线管。 先导阀控制允许流入曲轴箱的制冷剂的流量，使横跨横截面积固定通道的压差保持恒定，从而提供控制，使制冷剂的流量允许流向出口 压缩机的端口是恒定的。
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公开(公告)号：US20050056034A1
公开(公告)日：2005-03-17
申请号：US10933377
申请日：2004-09-03
申请人： Hisatoshi Hirota
发明人： Hisatoshi Hirota
CPC分类号： F25B41/062 , F25B2341/065 , F25B2600/2505 , Y02B30/72
摘要： To provide a small-sized solenoid-driven flow-regulating expansion valve which can be realized at low cost. In a flow-regulating expansion valve according to the present invention, a pipe forming a body thereof not only accommodates internal structures, such as a flow-regulating mechanism, a movable core, and a fixed core, but also serves as a part of piping of a refrigeration cycle. Further, a solenoid section including a solenoid coil is disposed outside the pipe in a manner surrounding the same. Therefore, substantial integration of the flow-regulating mechanism in the piping of the refrigeration cycle can be achieved, which makes the entire flow-regulating expansion valve very simple in construction. As a result, reduction of the size of the flow-regulating expansion valve and resultant reduction of material costs and manufacturing costs can be achieved, which makes it possible to achieve low costs of the flow-regulating expansion valve.
摘要翻译： 提供可以低成本实现的小型电磁式流量调节膨胀阀。 在根据本发明的流量调节膨胀阀中，形成其本体的管不仅容纳诸如流量调节机构，可动芯和固定芯的内部结构，而且还用作管道的一部分 的制冷循环。 此外，包括螺线管线圈的螺线管部分以围绕其的方式设置在管道的外部。 因此，可以实现流量调节机构在制冷循环的配管中的大量一体化，这使得整个调节膨胀阀的结构非常简单。 结果，可以实现减小流量调节膨胀阀的尺寸并减少材料成本和制造成本，这使得可以实现流量调节膨胀阀的低成本。
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公开(公告)号：US20050050916A1
公开(公告)日：2005-03-10
申请号：US10933447
申请日：2004-09-03
申请人： Hisatoshi Hirota , Katsumi Koyama , Tokumi Tsugawa
发明人： Hisatoshi Hirota , Katsumi Koyama , Tokumi Tsugawa
CPC分类号： F25B41/062 , F25B2341/062
摘要： To provide an expansion device that is configured compact in size and capable of effectively preventing an abnormal rise in pressure within the expansion device caused by the differential pressure across the expansion device. An expansion device according to the present invention cancels part of refrigerant pressure by a pressure-canceling structure. More specifically, by the amount of pressure received by a valve-closing pressure-receiving surface, the elastic force required of a spring can be reduced. As a result, a small-sized spring can be employed as the spring, and the entire expansion device can be made compact in construction. Further, when the differential pressure across the expansion device has become equal to or higher than a predetermined value, a relief mechanism enables refrigerant flowing in from the upstream side to escape into a passage other than a refrigerant passage through a valve element. This makes is possible to prevent an abnormal rise in the refrigerant pressure inside the expansion device, thereby preventing breakage or the like of the internal components.
摘要翻译： 提供一种尺寸紧凑的膨胀装置，能够有效地防止由膨胀装置的压差引起的膨胀装置内的压力异常升高。 根据本发明的膨胀装置通过压力消除结构抵消制冷剂压力的一部分。 更具体地，通过由关闭压力接收表面接收的压力的量，可以减少弹簧所需的弹性力。 结果，可以使用小型弹簧作为弹簧，并且可以使整个膨胀装置的结构紧凑。 此外，当膨胀装置两端的压差变得等于或高于预定值时，溢流机构使得从上游侧流入的制冷剂能够逸出通过阀元件的制冷剂通路以外的通路。 这样可以防止膨胀装置内的制冷剂压力的异常升高，从而防止内部部件的破损等。
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公开(公告)号：US06823897B2
公开(公告)日：2004-11-30
申请号：US10180851
申请日：2002-06-26
IPC分类号： F16K1122
CPC分类号： F16K31/423 , F16K11/044 , F16K11/10 , F25B9/008 , F25B41/046 , F25B2309/061 , Y10T137/86839 , Y10T137/87893
摘要： A four-way switching valve free from leakage of a refrigerant is disclosed. The valve includes two three-way switching valves arranged side by side, each having a pressure-regulating chamber, a piston, and a plug coaxially arranged. One of the pressure-regulating chambers selectively communicates with a low-pressure chamber or a high-pressure chamber via a three-way solenoid valve. The other pressure-regulating chamber communicates with another chamber in which the pressure increases or decreases as the pressure within one of the pressure-regulating chambers decreases or increases. As a result, refrigerant leakage is prevented, in turn preventing degradation of the refrigerating power of a system.
摘要翻译： 公开了一种没有制冷剂泄漏的四通切换阀。 该阀包括并排布置的两个三通切换阀，每个具有压力调节室，活塞和同轴布置的塞子。 一个压力调节室通过三通电磁阀选择性地与低压室或高压室连通。 另一个压力调节室与其中一个压力调节室内的压力降低或增加的压力增加或减小的另一个室连通。 结果，防止制冷剂泄漏，从而防止系统的制冷功率的劣化。
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公开(公告)号：US06662582B2
公开(公告)日：2003-12-16
申请号：US10199650
申请日：2002-07-19
IPC分类号： F25B100
CPC分类号： F04B27/1804 , F25B9/008 , F25B2309/061
摘要： A displacement control valve which is capable of shortening a time period for transition in operating displacement, and operating without necessitating a large solenoid force even if the size of the valve is increased so as to increase the amount of refrigerant. A differential pressure-sensing section is separated from a valve section, and caused to sense the differential pressure by a small-diameter piston rod such that even a small-sized solenoid section can set a differential pressure. A valve element, which is formed to have a larger diameter than that of the piston rod to increase the amount of refrigerant, is configured to operate as a member formed in one piece with a shaft. The pressure Pc from a pressure-regulating chamber is received at the axial opposite ends of a reduced-diameter portion of the shaft, and the suction pressure Ps from a suction chamber is received at the axial opposite ends of the one-piece member of the valve element and the shaft, thereby canceling out influence of the pressure Pc and the suction pressure Ps such that the valve element can be controlled only by the differential pressure sensed by the piston rod.
摘要翻译： 一种位移控制阀，其能够缩短操作位移中的过渡时间，并且即使阀的尺寸增加而不需要大的螺线管力而进行操作，从而增加制冷剂的量。 差压感测部分与阀部分分离，并通过小直径活塞杆感测到压差，使得即使小型螺线管部分也可以设定差压。 形成为具有比活塞杆大的直径以增加制冷剂量的阀元件被构造成作为与轴一体地形成的构件而起作用。 来自压力调节室的压力Pc被容纳在轴的缩径部分的轴向相对端，并且来自吸入室的吸入压力Ps被容纳在单件构件的轴向相对端 阀元件和轴，从而抵消压力Pc和吸入压力Ps的影响，使得阀元件仅能够由活塞杆感测到的压差来控制。
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公开(公告)号：US06394761B1
公开(公告)日：2002-05-28
申请号：US09543537
申请日：2000-04-05
申请人： Hisatoshi Hirota
发明人： Hisatoshi Hirota
IPC分类号： F04B126
CPC分类号： F04B27/1804 , F04B2027/1813 , F04B2027/1831
摘要： In a capacity control apparatus of a variable capacity compressor 10 a chamber 30 between a valve seat 26 and diaphragm 24 communicates with a pressure control chamber 12 of the compressor 10. Said valve seat 26 communicates outside said chamber 30 with an inhalation chamber 3 of said compressor. A valve element 25 which is pressure balanced in relation to the pressure Pc in pressure control chamber 12 is axially moveable within said chamber 30. The pressure effective areas of said valve seat 26 and of a diaphragm 24 co-acting with said valve element 25 are formed with equal sizes. Due to the relatively small diaphragm size a small sized and cheap solenoid can be used for the actuation of valve element 25. The cross-section area of valve seat 26 is relatively big and prevents a delayed control response behavior of the capacity control apparatus.
摘要翻译： 在可变容量压缩机10的容量控制装置中，阀座26和隔膜24之间的室30与压缩机10的压力控制室12连通。所述阀座26在所述室30的外部与所述腔室30的吸入室3连通 压缩机。 相对于压力控制室12中的压力Pc压力平衡的阀元件25可在所述腔室30内轴向移动。所述阀座26和与所述阀元件25共同作用的隔膜24的压力有效面积为 形成相同的尺寸。 由于膜片尺寸相对较小，可以使用小型和便宜的螺线管来驱动阀元件25.阀座26的横截面积相对较大并且防止了容量控制装置的延迟的控制响应行为。
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公开(公告)号：US06315266B1
公开(公告)日：2001-11-13
申请号：US09612640
申请日：2000-07-07
申请人： Hisatoshi Hirota , Tokumi Tsugawa , Yusuke Inoue
发明人： Hisatoshi Hirota , Tokumi Tsugawa , Yusuke Inoue
IPC分类号： F16K3142
CPC分类号： F25B41/062 , F16K31/406 , F25B9/008 , F25B2309/061 , F25B2341/067
摘要： In a silently operating pilot-operated flow regulating valve, a main valve element is not allowed to vibrate freely, e.g., in lateral direction in an opened state and cannot constitute a noise source because while the main valve element is brought into its open position, an urging force acts upon the main valve element so as to tilt it into vibration suppressing contact with the valve seat whereby vibration of the main valve element is restricted.
摘要翻译： 在静音操作的先导式流量调节阀中，主阀元件不允许在打开状态下例如横向振动，并且不能构成噪声源，因为在主阀元件进入其打开位置时， 推动力作用在主阀体上，以便将其倾斜成与阀座的振动抑制接触，从而限制主阀元件的振动。
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公开(公告)号：US4722229A
公开(公告)日：1988-02-02
申请号：US928452
申请日：1986-11-10
申请人： Hisatoshi Hirota , Etsumi Nakano
发明人： Hisatoshi Hirota , Etsumi Nakano
摘要： A pressure transducer having a magnetoresistive element and a magnet displaced with a diaphragm. A magnet supporting device is mounted on an element supporting device both for slidable movement in the displacement-direction of the magnet and for rotatable movement about an axis in the direction, so that the pressure transducer is capable of having a O-point adjustment and a magnetic sensitivity adjustment made independently of each other without interaction between the two when the transducer is assembled.
摘要翻译： 具有磁阻元件和用隔膜移位的磁体的压力传感器。 磁体支撑装置安装在元件支撑装置上，用于在磁体的位移方向上可滑动地移动，并且可绕轴线在该方向上旋转运动，使得压力传感器能够进行O点调节和 当传感器组装时，磁敏度调节彼此独立，两者之间没有相互作用。
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公开(公告)号：US4593166A
公开(公告)日：1986-06-03
申请号：US699152
申请日：1985-02-06
申请人： Hisatoshi Hirota , Toyoyuki Hara
发明人： Hisatoshi Hirota , Toyoyuki Hara
CPC分类号： H01H35/2657
摘要： There is provided a dual action pressure switch which comprises a casing having a pressure inlet, a diaphragm secured to and extending across the interior of the casing to define a pressure receiving chamber in the casing, a piston disposed on the side of the diaphragm opposite from the pressure receiving chamber for vertical movement subjected to pressure through the diaphragm, a holder biased to engage the piston under the force of a spring, a pair of stationary terminals having the lower ends extending downwardly beyond the lower end of the casing, a resilient disc disposed within the piston below the diaphragm for resiliently warping in one and the opposite directions and leaf springs subjected to the resilient force of the disc through a rod.
摘要翻译： 提供了双作用压力开关，其包括具有压力入口的壳体，固定到壳体内部并延伸穿过壳体内部的膜片，以在壳体内限定压力接收室;活塞，其设置在与膜片相对的侧面上 用于垂直运动的压力接收室受到通过隔膜的压力，在弹簧的作用下被偏压以接合活塞的保持器，具有向下延伸超过壳体下端的下端的一对固定端子，弹性盘 设置在隔膜下方的活塞内，以一个相反的方向弹性地翘曲，并通过杆受到盘的弹性力的板簧。
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