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：US20040244845A1

公开(公告)日：2004-12-09

申请号：US10856853

申请日：2004-06-01

申请人： TGK CO., LTD.

发明人： Katsumi Koyama

IPC分类号： F15B013/043

CPC分类号： F16K31/42 ,  F16K31/406 ,  Y10T137/87201

摘要： The object of the present invention is to provide a three-way valve reduced in the number of component parts and man-hours for assembling the component parts. A pressure chamber of a piston for urging a first main valve in a valve-closing direction by a spring, and a pressure chamber of a piston for urging a second main valve in a valve-opening direction against the urging force of a spring are connected to a medium-pressure port B via a pilot valve and a pressure passage. When the pilot valve is open, the pressure in the pressure chambers into which high-pressure fluid is introduced from a high-pressure port A via an orifice is permitted to escape to the medium-pressure port B, whereby the piston is pushed upward by the high pressure to open the first main valve, and a plug is urged by the spring to close the second main valve. When the pilot valve is closed, the pressure in the pressure chambers becomes high, so that the piston is pushed downward by the spring to close the first main valve, and the piston is pushed downward by the high pressure to open the second main valve. Since the pilot valve is formed by a two-way solenoid valve, and the pressure passage is formed within a body, it is possible to reduce the number of component parts.

摘要翻译： 本发明的目的是提供一种减少组件数量和组装部件的工时的三通阀。 活塞的压力室，连接有用于通过弹簧向阀闭合方向推压第一主阀的活塞，以及抵抗弹簧的推压力使第二主阀朝阀打开方向推压的活塞的压力室 通过先导阀和压力通道连接到中压口B。 当先导阀打开时，允许高压流体经由孔口从高压端口A引入高压流体的压力室中的压力逸出到中压端口B，由此活塞被向上推动通过 打开第一主阀的高压力，弹簧推动塞子关闭第二主阀。 当先导阀关闭时，压力室中的压力变高，使得活塞被弹簧向下推动以关闭第一主阀，并且通过高压将活塞向下推动以打开第二主阀。 由于先导阀由双向电磁阀形成，并且压力通道形成在主体内，因此可以减少部件的数量。

公开(公告)号：US20040091369A1

公开(公告)日：2004-05-13

申请号：US10700462

申请日：2003-11-05

申请人： TGK CO., LTD

发明人： Hisatoshi Hirota ,  Tomokazu Nakazawa

IPC分类号： F04B001/26

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, Pdnull 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：US20030213516A1

公开(公告)日：2003-11-20

申请号：US10428107

申请日：2003-05-02

申请人： TGK CO., LTD.

发明人： Hisatoshi Hirota ,  Tokumi Tsugawa

IPC分类号： G05D011/00

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：US20030210988A1

公开(公告)日：2003-11-13

申请号：US10429025

申请日：2003-05-05

申请人： TGK CO., LTD.

发明人： Hisatoshi Hirota

IPC分类号： F04B001/26

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.

摘要翻译： 本发明的目的是提供一种用于可变排量压缩机的容量控制阀，其不受来自压力调节室的压力的不利影响。 形成三通阀结构，其中高压阀元件和低压阀元件在两端一体地形成，并且具有相同直径的阀孔的阀座以与各个阀相对的方式布置 元素。 从阀座的上游侧供给排出压力，从阀座的下游侧供给吸入压力。 来自压力调节室的压力被接收在高压阀元件的下游侧和低压阀元件的上游侧。 此外，包括螺线管，用于通过阀经由阀的阀孔将可变排量压缩机开始容量控制的压差与负荷相对应地施加到高压阀元件和低压阀元件 座位。 阀孔形成为具有相同的直径，由此可以抵消来自压力调节室的压力，并且仅根据排出压力a和吸入压力之间的压差来执行容量控制。

公开(公告)号：US20030066303A1

公开(公告)日：2003-04-10

申请号：US10263915

申请日：2002-10-03

申请人： TGK Co., Ltd.

发明人： Hisatoshi Hirota ,  Takeshi Kaneko

IPC分类号： F25B041/04 ,  F25B041/06

CPC分类号： F25B41/062 ,  F25B2341/0683 ,  F25B2700/191

摘要： The object of the present Invention is to provide an expansion valve including a pressure sensor which enables reduction of parts cost. A pressure sensor is screwed into an opening of a body block, which communicates with a space accommodating a valve element and a compression coil spring for urging the valve element toward a valve seat. A set value for an expansion valve is adjusted by changing the amount of screwing of the pressure sensor to thereby change the load of the compression coil spring. An adjusting screw for adjusting the set value for the expansion valve can be dispensed with, which makes it possible to reduce the manufacturing costs of the expansion valve.

摘要翻译： 本发明的目的是提供一种包括能够降低部件成本的压力传感器的膨胀阀。 压力传感器被拧入体块的开口中，该体块与容纳阀元件的空间和用于将阀元件推向阀座的压缩螺旋弹簧连通。 通过改变压力传感器的拧紧量来调节膨胀阀的设定值，从而改变压缩螺旋弹簧的负荷。 可以省略用于调节膨胀阀的设定值的调节螺钉，这样可以降低膨胀阀的制造成本。

公开(公告)号：US20030024257A1

公开(公告)日：2003-02-06

申请号：US10199650

申请日：2002-07-19

申请人： TGK Co., Ltd.

发明人： Hisatoshi Hirota ,  Tomokazu Nakazawa

IPC分类号： F25B001/00 ,  F25B049/00

CPC分类号： F04B27/1804 ,  F25B9/008 ,  F25B2309/061

摘要： The object of the invention is to provide 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： 本发明的目的是提供一种位移控制阀，其能够缩短操作位移中的过渡时间，并且即使阀的尺寸增大也不需要大的螺线管力而进行操作，从而增加 制冷剂 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：US20030000586A1

公开(公告)日：2003-01-02

申请号：US10180851

申请日：2002-06-26

申请人： TGK Co., Ltd.

发明人： Hisatoshi Hirota ,  Toshiyuki Shiota ,  Katsumi Koyama

IPC分类号： F16K011/10

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. A pressure-regulating chamber is switchably connected to a low-pressure chamber or a high-pressure chamber by a three-way solenoid valve, and a pressure-regulating chamber is communicated with a chamber by a tube. When the three-way solenoid valve connects the pressure-regulating chamber to the low-pressure chamber, a plug is urged by the high pressure, thereby permitting port A and a port B to communicate with each other, while inhibiting the port B and a port D from communicating with each other. The pressure within the chamber is increased to thereby increase the pressure within the pressure-regulating chamber. Consequently, a plug is urged by a piston to thereby inhibit the port A and a port C from communicating with each other, and permitting the port C and the port D to communicate with each other. Inversely, when the three-way solenoid valve connects the pressure-regulating chamber to the high-pressure chamber, the plug is urged by a piston to thereby inhibit the port A and the port B from communicating with each other, and permitting the port B and the port D to communicate with each other. The pressure within the chamber is reduced to thereby reduce the pressure within the pressure-regulating chamber. Consequently, the plug is urged by the high pressure to thereby permitting the port A and the port C to communicate with each other, while inhibiting the port C and the port D from communicating with each other. This makes it unnecessary to cause leakage of the refrigerant to reduce pressures within the pressure-regulating chambers.

摘要翻译： 没有制冷剂泄漏的四通切换阀。 压力调节室通过三通电磁阀可切换地连接到低压室或高压室，并且压力调节室通过管与室连通。 当三通电磁阀将压力调节室连接到低压室时，由于高压力而迫使阀塞A和端口B相互连通，同时阻止端口B和 端口D相互通信。 室内的压力增加，从而增加压力调节室内的压力。 因此，塞子被活塞推动，从而阻止端口A和端口C彼此连通，并允许端口C和端口D彼此连通。 相反，当三通电磁阀将压力调节室连接到高压室时，塞子被活塞推动，从而阻止端口A和端口B相互连通，并允许端口B 和端口D相互通信。 室内的压力减小，从而降低压力调节室内的压力。 因此，插头被高压推动，从而允许端口A和端口C彼此连通，同时阻止端口C和端口D相互连通。 这使得不需要使制冷剂泄漏以减小压力调节室内的压力。

公开(公告)号：US10883480B2

公开(公告)日：2021-01-05

申请号：US15871667

申请日：2018-01-15

申请人： TGK CO., LTD.

发明人： Kazuhiro Irie ,  Masaaki Tonegawa ,  Hiroshi Hamada

IPC分类号： F04B27/18 ,  F04B49/06 ,  F16K31/06 ,  F25B49/02 ,  F04C28/12

摘要： A control valve includes: a first valve to control a flow rate of refrigerant flowing from a discharge chamber to a control chamber of a compressor; a second valve to control a flow rate of the refrigerant flowing from the control chamber to a suction chamber; a solenoid to generate a drive force in a first valve closing direction and a second valve opening direction; a biasing member to generate a biasing force in an first valve opening direction and a second valve closing direction; and a pressure sensing part to sense a pressure in the suction chamber or the control chamber, and generate a counterforce against the drive force. A state in which both of the first and second valves are open is present during an increase in the current supplied to the solenoid from zero to an upper limit current value, and an increase rate of an opening degree of the first valve is increased during a decrease in the current supplied to the solenoid, a predetermined lower limit current value being an inflection point of the increase.