公开(公告)号：US5702235A

公开(公告)日：1997-12-30

申请号：US629606

申请日：1996-04-09

申请人： Hisatoshi Hirota ,  Naoyuki Ito

发明人： Hisatoshi Hirota ,  Naoyuki Ito

IPC分类号： F04B27/18 ,  F04B1/26

CPC分类号： F04B27/1804

摘要： A capacity control device for variable-capacity compressors with a high-pressure valve portion 36 for opening or closing the communication between the discharge chamber 21 and the crank case 12; a low-pressure valve portion 41 for opening or closing the communication between the suction chamber 20 and the crank case 12; a valve open-close member 35 for opening or closing so as to reverse the open-close relationship between the high-pressure valve portion 36 and the low-pressure valve portion 41 by advancing or retreating; a pressurising chamber 53 for applying pressure to the valve open-close member 35 in a direction that opens the high-pressure valve portion 36 by a wider effective pressure-receiving area than that of the high-pressure valve portion 36. The device is driven with only small actuation forces by an electromagnetic solenoid 50 to open or close a communicating path between the discharge chamber 21 and the pressurising chamber 53 (FIG. 1).

摘要翻译： 一种用于可变容量压缩机的容量控制装置，具有用于打开或关闭排出室21和曲轴箱12之间的连通的高压阀部分36; 用于打开或关闭吸入室20和曲轴箱12之间的连通的低压阀部分41; 用于打开或关闭的阀开启构件35，以通过前进或后退来反转高压阀部分36和低压阀部分41之间的开 - 关关系; 加压室53，其通过比高压阀部36更宽的有效受压面积向打开高压阀部36的方向向阀开闭部件35施加压力。该装置被驱动 仅通过电磁螺线管50的小的致动力来打开或关闭排出室21和加压室53（图1）之间的连通路径。

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。

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

IPC分类号： B60H1/32 ,  F25B41/06 ,  F25B41/00 ,  F25B41/04

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。

公开(公告)号：US06823897B2

公开(公告)日：2004-11-30

申请号：US10180851

申请日：2002-06-26

申请人： Hisatoshi Hirota ,  Toshiyuki Shiota ,  Katsumi Koyama

发明人： Hisatoshi Hirota ,  Toshiyuki Shiota ,  Katsumi Koyama

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。