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11. 发明申请

US20050050916A1 Expansion device 审中-公开
标题翻译：扩充装置
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。

12. 发明授权

US06390441B2 Solenoid operated pilot valve 失效
标题翻译：电磁操纵先导阀
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。

13. 发明授权

US07165421B2 Refrigeration system 失效
标题翻译：制冷系统
公开(公告)号：US07165421B2
公开(公告)日：2007-01-23
申请号：US11097350
申请日：2005-04-04
申请人： Tokumi Tsugawa
发明人： Tokumi Tsugawa
IPC分类号： F25B41/06
CPC分类号： B60H1/3225 , F25B49/005 , F25B2341/0683 , F25B2500/06 , F25B2500/18
摘要： To prevent refrigerant in a refrigeration cycle from releasing into a vehicle compartment, in large amounts, due to breakage of an evaporator disposed on a compartment side or piping thereto. An expansion device is formed by an expansion valve that supplies throttled and expanded refrigerant to an evaporator, an electromagnetic valve connected in series to the expansion valve, and a check valve that prevents backflow of refrigerant flowing out of the evaporator, and a release-to-atmosphere device is provided in low-pressure piping connected to the compressor, for allowing the refrigerant therein to be released into the atmosphere. As a result, when refrigerant in the evaporator has released, or when there is a possibility of refrigerant releasing from the same, the electromagnetic valve is closed to isolate the evaporator from high-pressure piping of the refrigeration cycle, and at the same time the release-to-atmosphere device is opened to thereby dispose of the refrigerant in the low-pressure piping, outside the vehicle compartment. As a result, safety of occupants is ensured.
摘要翻译：为了防止制冷循环中的制冷剂由于设置在车厢侧的蒸发器的破损或其配管而被大量释放到车厢内。膨胀装置由膨胀阀形成，该膨胀阀将节流和膨胀的制冷剂供应到蒸发器，与膨胀阀串联连接的电磁阀和防止从蒸发器流出的制冷剂回流的止回阀，大气装置设置在连接到压缩机的低压管道中，用于使其中的制冷剂释放到大气中。结果，当蒸发器中的制冷剂被释放时，或者当可能从其释放制冷剂时，关闭电磁阀以将蒸发器与制冷循环的高压管道隔离，同时打开释放到大气的装置，从而将制冷剂置于车厢外的低压管道中。结果，确保了乘客的安全。

14. 发明申请

US20060117793A1 Expansion device 审中-公开
标题翻译：扩充装置
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
IPC分类号： F25B41/06 , F25B41/04
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。

15. 发明申请

US20050217313A1 Refrigeration system 失效
标题翻译：制冷系统
公开(公告)号：US20050217313A1
公开(公告)日：2005-10-06
申请号：US11097350
申请日：2005-04-04
申请人： Tokumi Tsugawa
发明人： Tokumi Tsugawa
IPC分类号： F25B41/06 , B60H1/00 , B60H1/32 , F25B49/00 , F25B49/02 , F25B1/00 , F25B41/04 , F25B45/00
CPC分类号： B60H1/3225 , F25B49/005 , F25B2341/0683 , F25B2500/06 , F25B2500/18
摘要： To prevent refrigerant in a refrigeration cycle from releasing into a vehicle compartment, in large amounts, due to breakage of an evaporator disposed on a compartment side or piping thereto. An expansion device is formed by an expansion valve that supplies throttled and expanded refrigerant to an evaporator, an electromagnetic valve connected in series to the expansion valve, and a check valve that prevents backflow of refrigerant flowing out of the evaporator, and a release-to-atmosphere device is provided in low-pressure piping connected to the compressor, for allowing the refrigerant therein to be released into the atmosphere. As a result, when refrigerant in the evaporator has released, or when there is a possibility of refrigerant releasing from the same, the electromagnetic valve is closed to isolate the evaporator from high-pressure piping of the refrigeration cycle, and at the same time the release-to-atmosphere device is opened to thereby dispose of the refrigerant in the low-pressure piping, outside the vehicle compartment. As a result, safety of occupants is ensured.
摘要翻译：为了防止制冷循环中的制冷剂由于设置在车厢侧的蒸发器的破损或其配管而被大量释放到车厢内。膨胀装置由膨胀阀形成，该膨胀阀将节流和膨胀的制冷剂供应到蒸发器，与膨胀阀串联连接的电磁阀和防止从蒸发器流出的制冷剂回流的止回阀，大气装置设置在连接到压缩机的低压管道中，用于使其中的制冷剂释放到大气中。结果，当蒸发器中的制冷剂被释放时，或者当可能从其释放制冷剂时，关闭电磁阀以将蒸发器与制冷循环的高压管道隔离，同时打开释放到大气的装置，从而将制冷剂置于车厢外的低压管道中。结果，确保了乘客的安全。

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