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：US07018179B2

公开(公告)日：2006-03-28

申请号：US10429025

申请日：2003-05-05

申请人： Hisatoshi Hirota

发明人： Hisatoshi Hirota

IPC分类号： F04B1/29

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

摘要： The object of the present invention is to provide a capacity control valve for a variable displacement compressor, which is not adversely affected by pressure from a pressure-regulating chamber. A three-way valve structure is formed in which a high-pressure valve element and a low-pressure valve element are integrally formed at both ends, and valve seats with valve holes having the same diameter are arranged in a manner opposed to the respective valve elements. A discharges pressure is supplied from the upstream side of the valve seat, and a suction pressure is supplied from the downstream side of the valve seat. Pressures from a pressure-regulating chamber are received at the downstream side of the high-pressure valve element and the upstream side of the low-pressure valve element. Further, a solenoid is included for applying a load corresponding to a differential pressure at which the variable displacement compressor starts capacity control, to the high-pressure valve element and the low-pressure valve element, by a shaft via a valve hole of the valve seat. The valve holes are formed to have the same diameter, whereby it is possible to cancel out the pressures from the pressure-regulating chamber and perform capacity control only in response to the differential pressure between the discharge pressure a and the suction pressure.

公开(公告)号：US20060005556A1

公开(公告)日：2006-01-12

申请号：US11229444

申请日：2005-09-02

申请人： Hisatoshi Hirota

发明人： Hisatoshi Hirota

IPC分类号： F25B41/04

CPC分类号： G05D7/0635 ,  F04B27/067 ,  F04B27/14 ,  F25B41/062 ,  F25B2341/063 ,  F25B2341/065 ,  F25B2600/2505 ,  F25B2600/2515 ,  G05D16/028 ,  G05D16/2022 ,  Y02B30/72

摘要： There is provided a flow rate control valve of a constant flow-rate control type, which is simple in construction. The flow rate control valve is configured, by regarding a evaporator as a restriction passage, to include a constant differential pressure control valve for controlling the differential pressure before and after pressure loss caused by passage of refrigerant through the evaporator to be substantially constant. In the constant differential pressure control valve, a valve element receives pressure from the outlet of the flow rate control valve in a valve-closing direction, and a piston receives pressure from the outlet of the evaporator in a valve-opening direction. By controlling the differential pressure between pressure at the inlet of the evaporator and the pressure at the outlet of the evaporator such that it is substantially constant, the constant differential pressure control valve causes the refrigerant to flow into the evaporator at a constant flow rate dependent on electric current that energizes a solenoid. This makes it unnecessary to form a restriction passage in the flow rate control valve, and hence the construction of the flow rate control valve can be simplified, which makes it possible to provide a flow rate control valve manufactured at low cost.

摘要翻译： 提供了一种恒定流量控制型的流量控制阀，结构简单。 流量控制阀通过将作为限制通道的蒸发器设置为包括用于控制由通过蒸发器的制冷剂通过而导致的压力损失之前和之后的压差基本恒定的恒定差压控制阀。 在恒定差压控制阀中，阀元件在阀关闭方向上从流量控制阀的出口接收压力，活塞在阀打开方向上从蒸发器的出口接收压力。 通过控制蒸发器入口处的压力和蒸发器出口处的压力之间的压差使得其基本上恒定，恒定差压控制阀使得制冷剂以恒定的流量流入蒸发器，依赖于 给螺线管通电的电流。 因此，不必在流量控制阀中形成限制通路，因此可以简化流量控制阀的结构，能够提供以低成本制造的流量控制阀。

公开(公告)号：US06966365B2

公开(公告)日：2005-11-22

申请号：US10428107

申请日：2003-05-02

申请人： Hisatoshi Hirota ,  Tokumi Tsugawa

发明人： Hisatoshi Hirota ,  Tokumi Tsugawa

IPC分类号： B60H1/00 ,  B60H1/32 ,  F25B41/00 ,  F25B41/04 ,  F25B49/02 ,  F16K17/20

CPC分类号： F25B41/04 ,  B60H1/00978 ,  B60H1/3225 ,  F25B41/003 ,  F28F2265/16 ,  Y10T137/2584 ,  Y10T137/87362

摘要： To provide an outflow prevention device which is capable of preventing refrigerant from flowing out into a vehicle compartment even when an evaporator has ruptured.The outflow prevention device comprises a shut valve arranged in a passage via which refrigerant introduced into a shut valve inlet from an expansion device is allowed to flow to the evaporator, and a check valve arranged in a passage via which refrigerant returned from the evaporator is allowed to flow to an accumulator. A chamber behind a piston fixed to a plug holding a valve sheet and a chamber on a downstream side of the check valve are communicated with each other via a bypass passage, so that differential pressure generated across the check valve by flow of refrigerant through the same can be applied to the shut valve to open and close the same. The valve sheet and the piston are formed to have the same diameters so as to prevent the shut valve from being influenced by introduced pressure, thereby enabling the shut valve to be operated only by the differential pressure generated across the check valve.

摘要翻译： 为了提供即使在蒸发器破裂时也能够防止制冷剂流入车厢的流出防止装置。 流出防止装置包括：关闭阀，其配置在允许从膨胀装置引入到关闭阀入口的制冷剂流入蒸发器的通路中，以及设置在允许从蒸发器返回的制冷剂的通路中的止回阀 流入累加器。 固定在保持阀片的塞子上的活塞和在止回阀的下游侧的腔室之间的腔室经由旁通通路彼此连通，从而通过制冷剂流过该止回阀而产生的差压 可以将其应用于关闭阀门打开和关闭。 阀片和活塞形成为具有相同的直径，以防止截止阀受到引入的压力的影响，从而使截止阀仅通过止回阀上产生的压差来操作。

公开(公告)号：US20050201866A1

公开(公告)日：2005-09-15

申请号：US11076853

申请日：2005-03-11

申请人： Hisatoshi Hirota

发明人： Hisatoshi Hirota

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

CPC分类号： F04B27/1804 ,  F04B2027/1827 ,  F04B2027/1854 ,  F04B2027/1859

摘要： To provide a control valve which is capable of maintaining the minimum operation of a variable displacement compressor, by causing a valve section thereof to be fully opened, irrespective of the expanded or compressed state of a bellows, even when the suction pressure of the compressor is high. In the control valve for a variable displacement compressor, a bellows is disposed between a pressure-sensing piston and a core in a pressure-sensing chamber, and a pressing force-transmitting member which is fixed to a plunger is interposed between the pressure-sensing piston and the bellows. Then, a spring which urges the pressing force-transmitting member toward a valve section is disposed between the pressing force-transmitting member and the bellows. As a result, even if the bellows contracts due to high suction pressure Ps, the pressing force-transmitting member is held in a state being urged toward the valve section by the spring, which causes a valve element to be pushed upward via the pressure-sensing piston, to make the valve section fully open, whereby the minimum operation of the compressor can be maintained.

摘要翻译： 为了提供一种能够维持可变排量压缩机的最小操作的控制阀，即使压缩机的吸入压力是压缩机的吸入压力，通过使其阀部分完全打开，而不管波纹管的膨胀或压缩状态如何 高。 在用于可变排量压缩机的控制阀中，波纹管设置在压力感测室中的压力感测活塞和芯之间，并且固定到柱塞的按压力传递构件插入在压力感测 活塞和波纹管。 然后，在按压力传递部件和波纹管之间设置有向压力传递部件向阀部侧推压的弹簧。 结果，即使波纹管由于高吸入压力Ps而收缩，按压力传递部件被保持在通过弹簧朝向阀部分被推动的状态，这通过压力传递部件向上推动阀元件， 检测活塞，使阀部分完全打开，从而可以保持压缩机的最小运行。

公开(公告)号：US20050056050A1

公开(公告)日：2005-03-17

申请号：US10935284

申请日：2004-09-08

申请人： Hisatoshi Hirota

发明人： Hisatoshi Hirota

IPC分类号： F16K31/06 ,  F25B41/06 ,  G05D16/20 ,  F25B41/00 ,  F25B1/00 ,  F25B49/00

CPC分类号： F16K31/0655 ,  F16K31/0651 ,  F25B41/062 ,  F25B2341/065 ,  F25B2600/2505 ,  G05D16/2013 ,  Y02B30/72

摘要： To provide a constant differential pressure valve which is compact in size and can be realized at low cost. In the constant differential pressure valve according to the present invention, a pipe forming a body thereof not only accommodates internal structures, such as a differential pressure control mechanism, a movable core, and a fixed core, but also serves as 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 differential pressure control mechanism into the piping of the refrigeration cycle can be achieved, which makes the entire constant differential pressure valve very simple in construction. As a result, reduction of the size of the constant differential pressure valve and resultant reduction of material costs and manufacturing costs can be achieved, which makes it possible to achieve low costs of the constant differential pressure valve.

摘要翻译： 提供一种尺寸紧凑并且可以以低成本实现的恒定差压阀。 在本发明的恒压差压阀中，形成本体的管不仅容纳差压控制机构，可动铁芯，固定铁心等内部结构，而且还可以作为 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，可以实现差压控制机构在制冷循环的配管中的大量集成，这使得整个恒压差压阀在结构上非常简单。 结果，可以实现恒定差压阀的尺寸的减小以及材料成本和制造成本的降低，这使得可以实现恒定差压阀的低成本。

公开(公告)号：US06866242B2

公开(公告)日：2005-03-15

申请号：US10653233

申请日：2003-09-03

申请人： Hisatoshi Hirota

发明人： Hisatoshi Hirota

IPC分类号： F16K31/06 ,  B60H1/32 ,  F25B41/06 ,  G05D16/20

CPC分类号： F25B41/062 ,  F25B2341/065 ,  F25B2600/2505 ,  G05D16/2013 ,  Y02B30/72

摘要： The object of the present invention is to provide a proportional valve which does not open or close by itself and is free of internal leakage. A valve element is formed integrally with a piston having a cross-sectional area equal to that of a valve hole constituting a valve seat, and a diaphragm having an outer peripheral portion secured to a body by a holder is disposed in contact with a pressure-receiving end face of the piston. The diaphragm is mounted in a displaced state such that when the valve element is seated on the valve seat, the pressure receiving area of the diaphragm is at a maximum and is equal to that of the valve element. Change in the pressure receiving area of the valve element corresponding to the lift amount thereof is canceled out by change in the pressure receiving area of the diaphragm corresponding to the amount of displacement thereof, thus preventing the valve from opening or closing by itself due to the difference between the pressure receiving areas. Also, a sliding portion of the piston is shut off by the diaphragm, whereby internal leakage can be completely prevented.

摘要翻译： 本发明的目的是提供一种比例阀，其不会自身打开或关闭并且没有内部泄漏。 阀元件与具有与构成阀座的阀孔的截面积相等的截面积的活塞一体地形成，并且具有通过保持件固定到主体的外周部分的隔膜设置成与压力传感器接触， 接收活塞的端面。 隔膜安装在移动状态，使得当阀元件就座在阀座上时，隔膜的受压面积最大并且等于阀元件的受压面积。 与其升程量对应的阀元件的压力接收面积的变化通过与其位移量对应的隔膜的受压面积的变化而被抵消，从而防止阀门因其自身的打开或闭合 受压区域之间的差异。 此外，活塞的滑动部分被隔膜切断，从而可以完全防止内部泄漏。

公开(公告)号：US06860294B2

公开(公告)日：2005-03-01

申请号：US10360493

申请日：2003-02-07

申请人： Hisatoshi Hirota ,  Tokumi Tsugawa ,  Katsumi Koyama

发明人： Hisatoshi Hirota ,  Tokumi Tsugawa ,  Katsumi Koyama

IPC分类号： B60H1/32 ,  F16K11/22 ,  F16K11/24 ,  F16K31/42 ,  F25B41/04 ,  F16K11/20

CPC分类号： F16K31/423 ,  F25B41/046 ,  Y10T137/86839 ,  Y10T137/87217

摘要： To provide a four-way solenoid valve having a three-way solenoid valve of which non-concentricity between a valve element and a valve hole is small, if any. A core of a three-way solenoid is integrally formed with a refrigerant passage extending axially therethrough, an annular projection forming a valve seat, and a guide for guiding reciprocating motion of a needle forming a valve element. A plug closing a cylinder of a body to define the pressure control chamber is also integrally formed with a valve seat and a guide for guiding reciprocating motion of a needle forming a valve element associated with the valve seat. This causes the needles to be seated on the valve seats associated therewith in respective states guided by the guides substantially concentric with the valve holes, which makes it possible to impart sufficient sealing properties to the valve portions when each valve is closed.

摘要翻译： 提供一种具有三通电磁阀的四通电磁阀，其中阀元件和阀孔之间的非同心度小，如果有的话。 三通螺线管的铁心与轴向延伸的制冷剂通道一体形成，形成阀座的环形突起和用于引导形成阀元件的针的往复运动的引导件。 闭合体的圆筒以限定压力控制室的塞子也与阀座和引导件一体地形成，用于引导形成与阀座相关联的阀元件的针的往复运动。 这使得针被引导在与阀孔基本上同心的导向的相应状态下与其相关联的阀座上，这使得当每个阀关闭时可以赋予阀部分足够的密封性能。

公开(公告)号：US06810911B2

公开(公告)日：2004-11-02

申请号：US10357891

申请日：2003-02-04

申请人： Hisatoshi Hirota ,  Katsumi Koyama

发明人： Hisatoshi Hirota ,  Katsumi Koyama

IPC分类号： F16K1104

CPC分类号： F16K31/426 ,  F25B41/046 ,  Y10T137/86839 ,  Y10T137/86887

摘要： A four-way switching valve includes a first three-way switching valve having a valve element for connecting a port B to a port A, or to a port D via a sleeve, in a switching manner; a second three-way switching valve having a valve element for connecting a port C to the port A, or to the port D, in a switching manner; and a piston for actuating these three-way switching valves. The three-way valves and piston are coaxially arranged within a hollow cylindrical body. A three-way solenoid valve introduces high pressure into a pressure chamber on the upper side of the piston to actuate the valve elements held on the sleeve downward, while the upward actuation is effected with a driving force produced by reducing the pressure in the pressure chamber and configuring guides to have a larger pressure-receiving area than that of a guide.

摘要翻译： 四通切换阀包括具有用于将端口B连接到端口A的阀元件或通过套筒连接到端口D的第一三通切换阀，以切换方式; 具有用于将端口C连接到端口A或端口D的阀元件的第二三通切换阀以切换方式; 以及用于致动这些三通切换阀的活塞。 三通阀和活塞同轴地布置在中空圆柱体内。 三通电磁阀将高压引入活塞上侧的压力室，以将保持在套筒上的阀元件向下驱动，而向上致动通过减小压力室中的压力产生的驱动力 并且配置引导件具有比引导件更大的受压面积。

公开(公告)号：US06694760B2

公开(公告)日：2004-02-24

申请号：US10160683

申请日：2002-06-01

申请人： Hisatoshi Hirota ,  Tokumi Tsugawa

发明人： Hisatoshi Hirota ,  Tokumi Tsugawa

IPC分类号： F25D1700

CPC分类号： F25B41/062 ,  F25B40/00 ,  F25B2341/065 ,  F25B2341/0662 ,  F25B2341/0683 ,  F25B2400/16 ,  Y02B30/72

摘要： A refrigerating cycle is capable of performing both an operation in which the maximum cooling power is desired to be unleashed and an operation in which the most excellent performance coefficient is attained. A refrigerating cycle is configured such that a differential pressure-regulating valve forming a pressure-reducing device is arranged between a condenser and a receiver. As a result, by setting the differential pressure regulated by the differential pressure-regulating valve 3 to 0, it is possible to cause the refrigerating cycle to perform an operation in which the maximum cooling power is desired to be unleashed, whereas by setting the same to a desired value, it is possible to cause the same to perform an operation in which an excellent performance coefficient is attained. By forming the differential pressure-regulating valve by an electromagnetic differential pressure-regulating valve, the regulated differential pressure can be changed from approximately 0 to a desired value by an electric signal from the outside.

摘要翻译： 制冷循环能够执行期望释放最大冷却功率的操作和达到最佳性能系数的操作。制冷循环被构​​造成使得形成压力的差压调节阀 减压装置设置在冷凝器和接收器之间。 结果，通过将由差压调节阀3调节的压差设定为0，可以使制冷循环进行希望释放最大冷却功率的动作，而通过设定相同 达到期望值，可以使其执行获得优异的性能系数的操作。 通过由电磁差压调节阀形成差压调节阀，通过来自外部的电信号将调节压差从大约0变化到期望值。