公开(公告)号：US06662582B2

公开(公告)日：2003-12-16

申请号：US10199650

申请日：2002-07-19

申请人： Hisatoshi Hirota ,  Tomokazu Nakazawa

发明人： Hisatoshi Hirota ,  Tomokazu Nakazawa

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。

公开(公告)号：US07021901B2

公开(公告)日：2006-04-04

申请号：US10700462

申请日：2003-11-05

申请人： Hisatoshi Hirota ,  Tomokazu Nakazawa

发明人： Hisatoshi Hirota ,  Tomokazu Nakazawa

IPC分类号： F04B1/26

CPC分类号： F04B27/1804 ,  F04B2027/1813 ,  F04B2027/1827 ,  F04B2027/1831 ,  F04B2027/1854 ,  F04B2027/1895

摘要： An object of the invention is to provide a variable displacement compressor which is capable of using a solenoid control valve which does not require a large solenoid force. The compressor is configured such that an electromagnetic proportional flow rate control valve is arranged in a refrigerant passage leading from a discharge chamber to a condenser, that a differential pressure regulating valve is arranged in a refrigerant passage leading from the discharge chamber to a crank chamber, and that a fixed orifice is arranged in a refrigerant passage leading from the crank chamber to a suction chamber, whereby the differential pressure regulating valve senses a differential pressure Pd, Pd′ generated across the electromagnetic proportional flow rate control valve, for control of pressure introduced into the crank chamber. Due to this configuration, the differential pressure regulating valve controls pressure Pc in the crank chamber such that the difference of pressure of refrigerant before and after passing through a restriction having openness set by the electromagnetic proportional flow rate control valve becomes constant, which makes the flow rate Qd of discharged refrigerant constant irrespective of changes in the engine rotational speed, etc. Since the differential pressure can be controlled by a small solenoid force, the variable displacement compressor can be made compact in size.

摘要翻译： 本发明的目的是提供一种能够使用不需要大的螺线管力的电磁控制阀的可变排量压缩机。 压缩机构成为使电磁比例流量控制阀配置在从排出室向冷凝器通过的制冷剂通路中，差压调节阀配置在从排出室向曲轴室通过的制冷剂通路中， 并且在从曲柄室引导到吸入室的制冷剂通路中设置固定孔，由此差压调节阀感测跨越电磁比例流量控制阀产生的压差Pd，Pd'，用于控制所引入的压力 进入曲柄室。 由于该构造，差压调节阀控制曲柄室内的压力Pc，使得在通过电磁比例流量控制阀所设定的开度的限制之前和之后的制冷剂的压力差变得恒定，这使得流动 排出的制冷剂的速率Qd与发动机转速等的变化无关。由于压差可以通过小的电磁力来控制，所以可变排量压缩机的尺寸可以小型化。

公开(公告)号：US06662581B2

公开(公告)日：2003-12-16

申请号：US10197970

申请日：2002-07-18

申请人： Hisatoshi Hirota ,  Tomokazu Nakazawa

发明人： Hisatoshi Hirota ,  Tomokazu Nakazawa

IPC分类号： F25B100

CPC分类号： F04B27/1804 ,  F04B2027/1827 ,  F04B2027/1831 ,  F04B2027/1854 ,  F25B9/008 ,  F25B2309/061

摘要： A displacement control valve that performs transition between operating capacities in a reduced time period. A valve element for introducing refrigerant from a discharge chamber into a pressure-regulating chamber after reducing discharge pressure Pd of the refrigerant to pressure Pc1, and a valve element for introducing refrigerant having pressure Pc2 from the pressure-regulating chamber into a suction chamber under suction pressure Ps are configured to open and close in an interlocked fashion, and a displacement control valve is comprised of the valve elements and a solenoid section that applies to a solenoid force corresponding to a predetermined differential pressure to these valve elements. When control to the minimum operating displacement is carried out, the valve element is fully opened, and the valve element is fully closed, while control to the maximum operating displacement is carried out, the valve element is fully closed, and the valve element is fully opened, whereby transmission between operating capacities is performed in a reduced time period.

摘要翻译： 一种位移控制阀，其在减少的时间段内执行操作容量之间的转换。 一种用于将制冷剂的排出压力Pd降低到压力Pc1后将制冷剂从排出室引入压力调节室的阀元件，以及用于将来自压力调节室的压力Pc2的制冷剂引入吸入室内的阀元件 压力Ps被构造成以互锁方式打开和关闭，并且位移控制阀由阀元件和螺线管部分构成，螺线管部分施加对应于这些阀元件的预定压差的螺线管力。 当进行最小操作位移的控制时，阀元件完全打开，并且阀元件完全关闭，同时执行到最大操作位移的控制，阀元件完全关闭，并且阀元件完全 打开，由此在减少的时间段内执行操作能力之间的传输。

公开(公告)号：US08956127B2

公开(公告)日：2015-02-17

申请号：US13344591

申请日：2012-01-05

申请人： Hisatoshi Hirota

发明人： Hisatoshi Hirota

IPC分类号： F04B1/26 ,  F04B1/32 ,  F04B1/29 ,  F04B49/22 ,  F04B27/18

CPC分类号： F04B1/324 ,  F04B1/295 ,  F04B49/22 ,  F04B2027/1813 ,  F04B2027/1827 ,  F04B2027/1831 ,  F04B2027/1854 ,  F04B2027/1859

摘要： A control valve includes a body having a crankcase communicating port, a discharge chamber communicating port and a suction chamber communicating port, which are arranged in this order from one end side of the body, a solenoid, provided at the other end side of the body, for driving a main valve in accordance with the amount of current supplied, a power element, provided in an inner space surrounded by the body and the solenoid, capable of exerting the drive force to resist the solenoidal force created by a displacement of a pressure-sensing member of the power element, and a shaft by which the drive force of the power element is adjustable by adjusting the fixed position of one end side of the shaft, the shaft being fixed to one end of the body and the other end of the shaft being joined with the power element.

摘要翻译： 控制阀包括具有曲轴箱连通口的主体，排气室连通口和抽吸室连通口，该主体从主体的一个端部以该顺序排列，设置在主体的另一端侧的螺线管 ，用于根据供给的电流量驱动主阀，设置在由主体和螺线管包围的内部空间中的功率元件，能够施加驱动力以抵抗由压力移位产生的螺线管力 功率元件的传感构件，以及通过调节所述轴的一端侧的固定位置来调节所述动力元件的驱动力的轴，所述轴固定在所述主体的一端，所述轴固定在所述主体的另一端 该轴与功率元件连接。

公开(公告)号：US07263857B2

公开(公告)日：2007-09-04

申请号：US11362871

申请日：2006-02-28

申请人： Hisatoshi Hirota

发明人： Hisatoshi Hirota

IPC分类号： F25B41/06

CPC分类号： F25B41/062 ,  F25B2341/062 ,  F25B2341/0671

摘要： To reduce the degree of influence of differential pressure on a pilot valve of a constant flow rate expansion valve. The constant flow rate expansion valve comprises a restriction passage for restricting the flow rate of refrigerant introduced from a refrigerant inlet port, a main valve for controlling the flow rate of refrigerant having flowed out from the restriction passage for discharging the refrigerant to a refrigerant outlet port, a piston for actuating the main valve in the valve-opening/closing direction by the differential pressure between intermediate pressure on the inlet port side of the main valve and pressure in a pressure chamber formed on the opposite side of the main valve, and a pilot valve for sensing the differential pressure proportional to the flow rate of refrigerant flowing through the restriction passage, thereby controlling the pressure in the pressure chamber set by a solenoid. In parallel with the main valve are arranged the pilot valve, the pressure chamber, and a fixed orifice in series in the direction of flow of refrigerant. This makes it possible to apply only the same level of differential pressure as that of small differential pressure applied to opposite end faces of the piston to the pilot valve, thereby making it possible to lessen the degree of influence of differential pressure on the pilot valve.

摘要翻译： 减小压差对恒定流量膨胀阀的先导阀的影响程度。 恒定流量膨胀阀包括用于限制从制冷剂入口引入的制冷剂的流量的限制通道，用于控制从用于将制冷剂排出到制冷剂出口的限制通道流出的制冷剂的流量的主阀 用于通过主阀的入口侧的中间压力与形成在主阀的相反侧的压力室的压力之间的压差来以阀开闭方向致动主阀的活塞，以及 用于感测与流过限制通道的制冷剂流量成比例的压差的控制阀，从而控制由螺线管设定的压力室中的压力。 与主阀并联配置有先导阀，压力室和固定孔，在制冷剂流动方向上串联。 这使得可以仅将施加到活塞的相对端面的小差压的差压水平施加到先导阀，从而可以减小差压对先导阀的影响程度。

公开(公告)号：US20060150649A1

公开(公告)日：2006-07-13

申请号：US11324234

申请日：2006-01-04

申请人： Hisatoshi Hirota

发明人： Hisatoshi Hirota

IPC分类号： F25B41/00

CPC分类号： F04B27/1804 ,  F04B27/1036 ,  F04B2027/1813 ,  F04B2027/1827 ,  F04B2027/1854

摘要： To provide a control valve for a variable displacement compressor, which is capable of stably operating in a pressure control area, and causing the compressor to quickly shift to operation with the minimum displacement. The control valve for a variable displacement compressor is capable of realizing stable pressure control, since a force applied to a valve element in a valve-closing direction increases when the valve element is in a pressure control area, and is balanced with a force applied to the valve element in a valve-opening direction by the pressure of refrigerant. Further, when the valve element moves past an end point of the pressure control area, the force applied to the valve element in the valve-closing direction decreases to thereby increase the valve-opening degree of a valve portion when the valve portion is fully open. Therefore, when a solenoid is not energized, it is possible to ensure a sufficient flow rate of refrigerant, thereby making it possible to cause the compressor to quickly shift to operation with the minimum displacement.

摘要翻译： 提供一种可变排量压缩机的控制阀，其能够在压力控制区域中稳定地操作，并使压缩机以最小排量快速转换到操作。 用于可变排量压缩机的控制阀能够实现稳定的压力控制，因为当阀元件处于压力控制区域中时，在阀关闭方向上施加到阀元件的力增加，并且与施加到 通过制冷剂的压力使阀元件处于阀打开方向。 此外，当阀元件移动超过压力控制区域的终点时，在阀门关闭方向施加到阀元件的力减小，从而当阀部分完全打开时增加阀部分的开阀度 。 因此，当螺线管未通电时，可以确保制冷剂的足够的流量，从而可以使压缩机以最小的位移快速地转换到操作。

公开(公告)号：US06997001B2

公开(公告)日：2006-02-14

申请号：US10604847

申请日：2003-08-21

申请人： Hisatoshi Hirota

发明人： Hisatoshi Hirota

IPC分类号： F25B43/02

CPC分类号： F25B31/004 ,  B60H1/3205 ,  B60H1/3214 ,  B60H1/3225 ,  B60H2001/3285 ,  F25B41/062 ,  F25B49/022 ,  F25B2341/065 ,  F25B2600/21 ,  F25B2600/2513 ,  Y02B30/72

摘要： The object of the present invention is to provide a method of operating a refrigeration cycle which is capable of preventing oil from staying in an evaporator and ensures high coefficient of performance as well as sufficient circulation of oil. An electronic expansion valve is controlled such that during normal operation, refrigerant is always in a superheated state at the outlet of an evaporator, and the refrigerant is periodically forced to have negative superheat for a predetermined time by a superheat control device. Thus, during normal operation, the refrigerant sucked into a variable displacement compressor always has superheat, whereby the refrigeration cycle can operate with high coefficient of performance and an engine driving the variable displacement compressor can be operated at high fuel efficiency. Also, the refrigerant is temporarily controlled so as to have negative superheat. Accordingly, lubricating oil stayed in the evaporator can be made to flow out to the variable displacement compressor, thus making it possible to prevent the compressor from seizing due to shortage of the lubricating oil.

摘要翻译： 本发明的目的是提供一种操作制冷循环的方法，其能够防止油停留在蒸发器中并确保高性能系数以及油的充分循环。 控制电子膨胀阀使得在正常操作期间，制冷剂在蒸发器的出口处始终处于过热状态，并且由过热控制装置周期性地将制冷剂强制为负过热一段预定时间。 因此，在正常运转时，吸入可变排量压缩机的制冷机始终具有过热性，由此能够以较高的性能系数运转制冷循环，并且能够以高燃料效率运转可变排量压缩机的发动机驱动。 此外，制冷剂被暂时控制为具有负的过热。 因此，可以使滞留在蒸发器中的润滑油流出到可变排量压缩机，从而可以防止压缩机由于润滑油不足而卡死。

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。

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

IPC分类号： F04B49/00 ,  F04B27/14 ,  F04B27/18 ,  F04B49/22 ,  F04B1/26

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。

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

IPC分类号： F16K31/06 ,  F25B41/06 ,  F25D17/00 ,  F25B41/04

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。