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。

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：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。

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：US06315266B1

公开(公告)日：2001-11-13

申请号：US09612640

申请日：2000-07-07

申请人： Hisatoshi Hirota ,  Tokumi Tsugawa ,  Yusuke Inoue

发明人： Hisatoshi Hirota ,  Tokumi Tsugawa ,  Yusuke Inoue

IPC分类号： F16K3142

CPC分类号： F25B41/062 ,  F16K31/406 ,  F25B9/008 ,  F25B2309/061 ,  F25B2341/067

摘要： In a silently operating pilot-operated flow regulating valve, a main valve element is not allowed to vibrate freely, e.g., in lateral direction in an opened state and cannot constitute a noise source because while the main valve element is brought into its open position, an urging force acts upon the main valve element so as to tilt it into vibration suppressing contact with the valve seat whereby vibration of the main valve element is restricted.

摘要翻译： 在静音操作的先导式流量调节阀中，主阀元件不允许在打开状态下例如横向振动，并且不能构成噪声源，因为在主阀元件进入其打开位置时， 推动力作用在主阀体上，以便将其倾斜成与阀座的振动抑制接触，从而限制主阀元件的振动。