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公开(公告)号：US20070180854A1
公开(公告)日：2007-08-09
申请号：US11701497
申请日：2007-02-02
CPC分类号： F25B41/062 , F25B40/00 , F25B2309/061 , F25B2341/0683 , F25B2500/18 , F25B2600/2505
摘要： To provide an expansion device which controls high pressure-side pressure such that the pressure does not exceed a predetermined pressure in terms of absolute pressure, while operating in response to differential pressure between pressure at an inlet thereof and pressure at an outlet thereof. An expansion device comprises an orifice for expanding refrigerant, a valve element disposed on a downstream side of a valve hole and urged by a shape-memory alloy spring in a valve-opening direction, a shaft disposed to extend through the valve hole and having one end thereof rigidly fixed to the valve element, and a spring provided at the other end of the shaft, for receiving load generated by differential pressure between pressure of refrigerant at an inlet of the device and pressure of refrigerant at an outlet thereof, in a valve-opening direction. The shape-memory alloy spring senses the temperature of refrigerant on the downstream side to perform temperature-dependent correction of a set value of the differential pressure for opening the valve element. Therefore, pressure on an upstream side of the valve hole is controlled as if by absolute pressure. Further, when the pressure on the upstream side exceeds a predetermined pressure, the spring is bent to open the expansion valve, and hence the pressure is prevented from rising above the predetermined pressure.
摘要翻译： 提供一种膨胀装置，其控制高压侧压力，使得压力绝对压力不超过预定压力，同时响应于其入口处的压力和其出口处的压力之间的压差而操作。 膨胀装置包括用于膨胀制冷剂的孔口，设置在阀孔的下游侧并由形状记忆合金弹簧沿阀打开方向推动的阀元件，设置成延伸穿过阀孔并具有一个 其端部刚性地固定到阀元件，以及设置在轴的另一端的弹簧，用于接收在装置的入口处的制冷剂的压力与其出口处的制冷剂的压力之间的差压产生的负载 开放方向 形状记忆合金弹簧感测下游侧的制冷剂的温度，以进行用于打开阀元件的压差的设定值的温度校正。 因此，通过绝对压力控制阀孔的上游侧的压力。 此外，当上游侧的压力超过预定压力时，弹簧被弯曲以打开膨胀阀，因此防止压力升高到高于预定压力。
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公开(公告)号：US20060117793A1
公开(公告)日：2006-06-08
申请号：US11293278
申请日：2005-12-05
申请人： Tokumi Tsugawa , Masaaki Tonegawa
发明人： Tokumi Tsugawa , Masaaki Tonegawa
CPC分类号： F25B41/06 , F25B2341/063 , F25B2500/01 , F25B2500/12 , F25B2600/2505
摘要： An expansion device which is capable of reducing generation of untoward noise due to vibration of a valve element and suppressing a valve element suction phenomenon which occurs when high-pressure refrigerant flows through a variable orifice formed between a valve seat and the valve element. A damper chamber is formed by a cylinder formed in a housing formed with a valve seat, a piston integrally formed with a valve element, and an adjustment screw. When the valve element undergoes a sudden change in pressure of introduced refrigerant, the volume of the damper chamber changes to accommodate sudden motion of the valve element, whereby vibration of the valve element is suppressed, to reduce generation of untoward noise. The ratio (b/a) of the valve element diameter (b) of the valve element to the port diameter (a) of a valve hole is set to a value not larger than 1.5 so as to suppress a valve element suction phenomenon and pass refrigerant at a flow rate corresponding to a differential pressure between a primary pressure and a secondary pressure.
摘要翻译： 一种膨胀装置，其能够减少由于阀元件的振动引起的不利噪声的产生，并且抑制当高压制冷剂流过形成在阀座和阀元件之间的可变孔口时发生的阀元件吸入现象。 阻尼室由形成在形成有阀座的壳体中的气缸形成，与阀元件整体形成的活塞和调节螺钉。 当阀体经受引入制冷剂的压力突然变化时，阻尼室的体积变化以适应阀元件的突然运动，从而抑制阀元件的振动，以减少不良噪声的产生。 阀元件的阀芯直径（b）与阀孔的口径（a）的比（b / a）被设定为不大于1.5的值，以便抑制阀元件吸入现象并通过 制冷剂以与一次压力和二次压力之间的压差相对应的流量。
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公开(公告)号：US06532764B1
公开(公告)日：2003-03-18
申请号：US09390152
申请日：1999-09-03
IPC分类号： F25B4106
CPC分类号： F25B41/062 , F25B2341/061 , F25B2341/062
摘要： An expansion valve of the degree-of-supercooling control type can be easily adjusted when assembling the degree of supercooling of a high-pressure refrigerant control to be held constant if an exerting force adjusting member is used for finely adjusting the exerting force. If either a throttling portion or a valve seat is formed with the exerting force adjusting member, a simple and compact design or construction can be achieved.
摘要翻译： 如果使用施加力调节构件来精细调节施加力，则可以容易地调节过冷度控制型的膨胀阀，以将组装高压制冷剂控制器的过冷却程度保持恒定。 如果通过施加力调节构件形成节流部或阀座，则可以实现简单紧凑的设计或构造。
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公开(公告)号：US06957663B2
公开(公告)日：2005-10-25
申请号：US10359822
申请日：2003-02-07
CPC分类号： F25B41/062 , F25B13/00 , F25B2309/061 , F25B2341/0671 , Y10T137/7766 , Y10T137/87917
摘要： The object of the present invention is to provide a solenoid control valve simple in construction and low in cost, realized by reducing the number of component parts, eliminating screw-joined portions, and minimizing the use of rubber O rings. A valve hole of a pilot valve, a hole of a bearing for supporting one end of a shaft of a solenoid, and a fitting hole in which is fitted one end of a sleeve, are formed along the same axis in a body. This makes it possible to accurately establish the concentricity of movable components of the solenoid when the sleeve is fitted in the fitting hole, and hence, a pilot valve element can be integrally formed with the shaft. Set values for a main valve and the pilot valve are adjusted by adjusting the amounts of insertions of a press-fit member and a bearing by press-fitting. At the same time, a space below a piston and an end of a hole through a core are closed by the press-fit members and the solenoid and the body are joined to each other by caulking a yoke to thereby eliminate screw portions, and minimize rubber sealed portions.
摘要翻译： 本发明的目的是提供一种结构简单，成本低廉的电磁控制阀，通过减少部件数量，消除螺纹接合部分，最大限度地减少橡胶O形环的使用。 在主体中沿着同一轴线形成有先导阀的阀孔，用于支撑螺线管的轴的一端的轴承的孔和套筒一端的嵌合孔。 这使得当套筒装配在装配孔中时，可以精确地确定螺线管的可动部件的同心度，因此可以将导向阀元件与轴一体地形成。 主阀和先导阀的设定值通过调整压配件和轴承的插入量进行调整。 同时，通过压配合构件将活塞下方的空间和孔的端部封闭，并且螺线管和主体通过铆接轭而彼此接合，从而消除螺纹部分，并且最小化 橡胶密封部分。
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公开(公告)号：US06783110B2
公开(公告)日：2004-08-31
申请号：US10308211
申请日：2002-12-02
IPC分类号： F16K3102
CPC分类号： F25B41/062 , F16K1/123 , F16K3/265 , F16K31/0651 , F16K31/0655 , F16K31/0668 , F25B2341/061 , F25B2341/065 , Y02B30/72
摘要： To provide a small-sized and low-cost proportional solenoid valve which is capable of controlling a bidirectional fluid flow. A core is fixed in a pipe, and a hollow shaft having an extreme end thereof closed by a valve seat and a portion adjacent thereto formed with valve holes is fixed in the core. Within the pipe, there are arranged a hollow cylindrical valve element axially movable using the shaft as a guide and urged in a direction away from the core by a spring, for opening and closing the valve holes, and a plunger, while outside the pipe, there is arranged a solenoid coil. The proportional solenoid valve has a body formed by the pipe, and the component parts for opening and closing the valve are arranged within the pipe, so that it is possible to reduce the size of the proportional solenoid valve, the number of component parts, and machining costs and material costs, which contributes to reduction of costs of the valve. Further, since the operation of the hollow cylindrical valve element for opening and closing the valve holes is not adversely affected by the direction of the fluid flow, it is possible to control a bidirectional flow of fluid.
摘要翻译： 提供能够控制双向流体流动的小型和低成本比例电磁阀。 芯部固定在管中，并且具有由阀座封闭的前端的空心轴和与阀孔相邻的部分固定在芯中。 在管内设有一个中空的圆柱形阀元件，该中空圆柱形阀元件可以使用该轴作为引导件而轴向移动，并且通过弹簧沿远离该芯的方向被推压，用于打开和关闭该阀孔，以及一个柱塞， 设置有螺线管线圈。 比例电磁阀具有由管形成的本体，并且用于打开和关闭阀的部件布置在管内，使得可以减小比例电磁阀的尺寸，部件的数量和 加工成本和材料成本，这有助于降低阀门的成本。 此外，由于用于打开和关闭阀孔的中空圆柱形阀元件的操作不会受到流体流动的方向的不利影响，因此可以控制流体的双向流动。
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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
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。
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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
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。
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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。
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公开(公告)号：US06390441B2
公开(公告)日：2002-05-21
申请号：US09779899
申请日：2001-02-08
申请人： Katsumi Koyama , Tokumi Tsugawa , Shinji Saeki
发明人： Katsumi Koyama , Tokumi Tsugawa , Shinji Saeki
IPC分类号： F16K3106
CPC分类号： F16K31/408
摘要： In a main valve having a solenoid pilot operated valve, a movable core and a hollow plunger are movably received in a sleeve extending from a pressure control chamber through an electromagnetic coil. The plunger is structurally separated from a main valve member. A shaft is slidably received in the plunger. One end of the shaft carries a pilot valve member. A spring engages at the plunger and the shaft such that the free end of the shaft projects a predetermined length beyond an end face of the plunger. As long as the coil is deenergized, the spring separates the pilot valve member from a pilot valve seat. As soon as the coil is energized, the plunger is attracted to the core, the shaft is displaced in relation to the plunger, and the pilot valve member projecting from the lower end of the plunger closes the pilot valve seat. Due to the developing pressure difference, the main valve is closed and kept in a closed state.
摘要翻译： 在具有螺线管先导阀的主阀中，可动铁心和中空柱塞可移动地容纳在从压力控制室通过电磁线圈延伸的套筒中。 柱塞在结构上与主阀构件分离。 轴可滑动地容纳在柱塞中。 轴的一端承载有先导阀构件。 弹簧在柱塞和轴处接合，使得轴的自由端突出超过柱塞的端面的预定长度。 只要线圈断电，弹簧将先导阀构件与先导阀座分离。 一旦线圈通电，柱塞被吸引到芯部，轴相对于柱塞移位，并且从柱塞的下端突出的先导阀构件将先导阀座关闭。 由于显影压力差，主阀关闭并保持关闭状态。
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公开(公告)号：US06314753B1
公开(公告)日：2001-11-13
申请号：US09588450
申请日：2000-06-06
申请人： Hisatoshi Hirota , Tokumi Tsugawa , Yusuke Inoue
发明人： Hisatoshi Hirota , Tokumi Tsugawa , Yusuke Inoue
IPC分类号： F25B4104
CPC分类号： F25B41/06 , F16K17/0433 , F25B43/003 , F25B2341/061 , F25B2341/063 , F25B2500/12 , G05D7/0133 , Y10T137/7939
摘要： To achieve a silent, noiseless operation supercooling degree-controlled expansion valve 10 wherein vibration of a valve element 14 induced by refrigerant flow changes is suppressed and a spring 18 presses valve element 14 in an oblique direction inclined with respect to an axial direction thereof against a surrounding member 12 to thereby restrict vibration of the valve element.
摘要翻译： 为了达到抑制由制冷剂流动引起的阀体14的振动变化的静音，无声操作的过冷度控制膨胀阀10，并且弹簧18沿相对于其轴向方向倾斜的倾斜方向按压阀元件14 从而限制阀元件的振动。
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