公开(公告)号：US20060053812A1

公开(公告)日：2006-03-16

申请号：US11222809

申请日：2005-09-12

申请人： Hisatoshi Hirota

发明人： Hisatoshi Hirota

IPC分类号： F25B41/04

CPC分类号： F04B27/1804 ,  F04B49/225 ,  F04B2027/1827 ,  F04B2027/1854 ,  F04B2027/1872

摘要： To provide a control valve for use in a variable displacement compressor, for fixed flow rate control, which can be constructed compact in size without necessitating pressure sensors for detecting a differential pressure. The control valve comprises a first valve having configuration of a check valve that opens and closes by the differential pressure between discharge pressure from a discharge chamber and discharge pressure at an outlet port of the compressor, a second valve that opens and closes by sensing the differential pressure between the discharge pressure Pdh and pressure in the crankcase, and a solenoid that sets the differential pressure across the first valve. The motion of a valve element of the first valve is transmitted to a valve element of the second valve via a shaft. With this arrangement, the second valve controls the pressure in the crankcase such that the differential pressure across the first valve becomes equal to a fixed value set by the solenoid, whereby the flow rate of refrigerant discharged from an outlet port of the compressor can be controlled to be constant.

摘要翻译： 为了提供用于可变排量压缩机的控制阀，用于固定流量控制，其可以被构造成紧凑的尺寸，而不需要用于检测差压的压力传感器。 控制阀包括第一阀，其具有通过来自排出室的排出压力与压缩机出口处的排出压力之间的差压而打开和关闭的止回阀的结构，通过感测差速器而打开和关闭的第二阀 排出压力Pdh和曲轴箱内的压力之间的压力，以及设定跨越第一阀的压差的螺线管。 第一阀的阀元件的运动通过轴传递到第二阀的阀元件。 通过这种布置，第二阀控制曲轴箱内的压力，使得第一阀门两端的压差等于由螺线管设定的固定值，从而可以控制从压缩机出口排出的制冷剂的流量 要恒定

公开(公告)号：US20060045758A1

公开(公告)日：2006-03-02

申请号：US11213902

申请日：2005-08-30

申请人： Hisatoshi Hirota

发明人： Hisatoshi Hirota

IPC分类号： F04B49/00 ,  F04B1/26

CPC分类号： F04B27/1804 ,  F04B2027/1813 ,  F04B2027/1827 ,  F04B2027/1854 ,  F04B2027/1859

摘要： To provide a control valve for a variable displacement compressor, which is capable of promptly restoring a high-sensitivity variable displacement compressor to a predetermined discharge capacity without causing hunting even when the rotational speed of the compressor is rapidly changed. A valve section controls the flow rate of refrigerant flowing from a discharge chamber to a crankcase, based on the differential pressure between discharge pressure and suction pressure. A pressure-sensing section is provided in a high-pressure port, and when a pressure-sensing piston having a pressure-receiving area larger than that of a valve element is exposed to a rapid change in the discharge pressure, the differential pressure generated between the discharge pressure and pressure in a pressure-adjusting chamber acts on the valve element in a direction opposite to a valve-opening/closing direction, to thereby temporarily make slower the motion of the valve element which is to be opened or closed by the differential pressure between the discharge pressure and the suction pressure. This makes it possible to promptly restore a high-sensitivity variable displacement compressor to a predetermined discharge capacity without hunting.

摘要翻译： 为了提供一种用于可变排量压缩机的控制阀，其能够即使当压缩机的转速快速变化时也可以迅速将高灵敏度可变排量压缩机恢复到预定的排放容量而不引起振动。 基于排出压力和吸入压力之间的压差，阀部分控制从排出室流向曲轴箱的制冷剂的流量。 压力传感部设置在高压端口中，并且当具有大于阀元件的受压面积的压力感测活塞暴露于排出压力的快速变化时，在 压力调节室中的排出压力和压力在与阀打开/关闭方向相反的方向作用在阀元件上，从而暂时使通过差速器打开或关闭的阀元件的运动变慢 排气压力与吸入压力之间的压力。 这使得可以在不进行狩猎的情况下将高灵敏度可变排量压缩机迅速恢复到预定的放电容量。

公开(公告)号：US20060039799A1

公开(公告)日：2006-02-23

申请号：US11205119

申请日：2005-08-17

申请人： Hisatoshi Hirota

发明人： Hisatoshi Hirota

IPC分类号： F04B1/26 ,  F04B27/08

CPC分类号： F04B27/1804 ,  F04B2027/1813 ,  F04B2027/1827 ,  F04B2027/185 ,  F04B2027/1854 ,  F04B2027/1859

摘要： To provide a control valve for a variable displacement compressor, which is capable of promptly restoring the compressor to a predetermined discharge capacity even when the rotational speed of an engine is rapidly changed. In a valve section for controlling the flow rate of refrigerant flowing from a discharge chamber into a crankcase of a variable displacement compressor, a pressure-sensing section is provided in a high-pressure port that receives discharge pressure. In the pressure-sensing section, when a pressure-sensing piston which is larger in pressure-receiving area than a valve element receives a change in discharge pressure caused by a rapid change in rotational speed of the engine, differential pressure is produced between discharge pressure Pd and pressure in a pressure-adjusting chamber, which temporarily produces a force for axially moving the piston. This force is transmitted to the valve element via a shaft, to thereby accelerate the opening/closing motion of the valve element caused by the differential pressure between discharge pressure and suction pressure, whereby the compressor is promptly restored to a predetermined discharge capacity.

摘要翻译： 为了提供一种用于可变排量压缩机的控制阀，即使当发动机的转速快速变化时，也能够将压缩机迅速地恢复到预定的排放容量。 在用于控制从排气室流入可变排量压缩机的曲轴箱的制冷剂的流量的阀部分中，在接受排出压力的高压口中设置有压力感测部。 在压力检测部中，当压力接收面积大于压力容纳区域的压力感测活塞受到由发动机的转速急剧变化引起的排出压力的变化时，在排出压力 压力调节室中的Pd和压力暂时产生用于轴向移动活塞的力。 该力通过轴传递给阀体，从而加速由排出压力和吸入压力之间的压差引起的阀芯的打开/关闭运动，从而将压缩机迅速恢复到预定的排出容量。

公开(公告)号：US06997000B2

公开(公告)日：2006-02-14

申请号：US10720167

申请日：2003-11-25

申请人： Hisatoshi Hirota

发明人： Hisatoshi Hirota

IPC分类号： F25B41/00 ,  F25B43/00

CPC分类号： B60H1/3225 ,  B60H1/00978 ,  B60H1/3217 ,  F25B41/04 ,  F25B41/043 ,  F25B2341/0683 ,  F25B2400/19 ,  F25B2500/06 ,  F25B2500/18 ,  F25B2500/27

摘要： The object of the present invention is to prevent refrigerant from flowing out into a vehicle compartment due to damage to an evaporator or piping associated therewith. A solenoid valve is arranged at an inlet of an evaporator, and a check valve is arranged at an outlet of the evaporator. When operation of a system is to be stopped, the solenoid valve is closed while a compressor is kept operating for a predetermined time to suck out refrigerant from the evaporator to a downstream side of the check valve, so that during stoppage of the operation, the check valve prevents the refrigerant from flowing back into the evaporator. Thus, even if the evaporator arranged in the vehicle compartment or piping associated therewith is damaged, a situation where a large amount of refrigerant flows out of the evaporator into the vehicle compartment does not occur because no refrigerant remains in the evaporator, making it possible to prevent occupants in the vehicle compartment from being put in a grave situation.

摘要翻译： 本发明的目的是防止制冷剂由于与其相关联的蒸发器或管道的损坏而流出到车厢内。 电磁阀设置在蒸发器的入口处，并且在蒸发器的出口处布置有止回阀。 当停止系统的操作时，在压缩机保持运行预定时间以将制冷剂从蒸发器吸入止回阀的下游侧时，电磁阀关闭，使得在停止操作期间， 止回阀防止制冷剂回流到蒸发器中。 因此，即使布置在车辆隔室中的蒸发器或与其相关联的管道被损坏，也不会发生大量制冷剂从蒸发器流出到车厢内的情况，因为在蒸发器中没有制冷剂残留， 防止车厢内的乘客处于严重状况。

公开(公告)号：US20050265853A1

公开(公告)日：2005-12-01

申请号：US11137672

申请日：2005-05-26

申请人： Hisatoshi Hirota

发明人： Hisatoshi Hirota

IPC分类号： F04B27/18 ,  F04B49/22 ,  F04B1/12 ,  F04B1/26

CPC分类号： F04B27/1804 ,  F04B49/225 ,  F04B2027/1813 ,  F04B2027/1854 ,  F04B2027/1872 ,  F04B2027/1895

摘要： To provide a control valve for a variable displacement compressor, which is simple in construction and excellent in controllability. Between a port for introducing refrigerant at discharge pressure Pd1 delivered from a discharge chamber and a port for allowing refrigerant at discharge pressure Pd2 to flow out at a controlled flow rate, there are provided a main valve the valve lift of which is varied according to the flow rate of refrigerant passing therethrough, and a solenoid valve that uses a valve element of the main valve as a variable valve seat and supplies to the crankcase the refrigerant at pressure Pc the flow rate of which is controlled according to the size of a gap formed between the variable valve seat and the hollow cylindrical valve element. The main valve not only senses the flow rate but also serves as the valve seat of the solenoid valve, and the solenoid valve controls the small flow rate of refrigerant supplied to the crankcase. Therefore, the control valve is simple in construction, and capable of performing stable flow rate control.

摘要翻译： 提供一种可变排量压缩机的控制阀，结构简单，控制性好。 在从排出室排出的排出压力Pd 1和用于允许制冷剂在排出压力Pd 2以受控流量流出的端口之间引入制冷剂的端口之间，设有主阀，其阀升程根据 与通过其的制冷剂的流量相对应的电磁阀;以及电磁阀，其使用主阀的阀元件作为可变阀座，并将曲轴箱供给压力为Pc的制冷剂，其流量根据 在可变阀座和中空圆柱形阀元件之间形成的间隙。 主阀不仅检测流量，而且还用作电磁阀的阀座，电磁阀控制供给曲轴箱的制冷剂的小流量。 因此，控制阀结构简单，能够进行稳定的流量控制。

公开(公告)号：US20050210894A1

公开(公告)日：2005-09-29

申请号：US11083024

申请日：2005-03-18

申请人： Hisatoshi Hirota

发明人： Hisatoshi Hirota

IPC分类号： F25B49/02 ,  B60H1/32 ,  F16K17/16 ,  F25B45/00 ,  F25B49/00 ,  F16K17/14 ,  F16K17/40 ,  F25B41/00

CPC分类号： F25B45/00 ,  F25B49/005 ,  F25B2345/006 ,  Y10T137/1767

摘要： To provide a refrigerant relief device which releases refrigerant in a refrigeration cycle to the outside of a vehicle compartment, when the refrigerant releases into the vehicle compartment, or when there is a fear that the refrigerant releases into the vehicle compartment. A metal thin film is welded in advance to a body connected to piping of a refrigeration cycle such that it blocks a refrigerant inlet passage. When leakage of refrigerant into a vehicle compartment or collision of an automotive vehicle is detected, pulse current is applied to a coil of a solenoid, whereby a movable core is attracted to a fixed core. This causes a piercing rod fixed to the movable core to pierce the metal thin film with its pointed tip to make a hole through the metal thin film. When application of the pulse current is stopped, the piercing rod is returned to the standby position by a spring, so that the refrigerant is released to the outside of the vehicle compartment by passing through a conduit via the opened hole.

摘要翻译： 提供一种制冷剂释放装置，其将致冷循环中的制冷剂释放到车厢的外部，当制冷剂释放到车厢内时，或者当担心制冷剂释放到车厢时。 预先将金属薄膜焊接到连接到制冷循环的管道的主体，从而阻止制冷剂入口通道。 当检测到制冷剂泄漏到车厢或碰撞汽车时，脉冲电流被施加到螺线管的线圈，由此将可动铁心吸引到固定铁心。 这导致固定在可动铁芯上的穿刺杆用其尖端刺穿金属薄膜，以穿过金属薄膜形成一个孔。 当停止施加脉冲电流时，穿刺杆通过弹簧返回到备用位置，使得制冷剂经由开孔穿过导管而释放到车厢外部。

公开(公告)号：US20050053474A1

公开(公告)日：2005-03-10

申请号：US10918420

申请日：2004-08-16

申请人： Hisatoshi Hirota ,  Morimitsu Kajiwara ,  Ryosuke Yoshihiro

发明人： Hisatoshi Hirota ,  Morimitsu Kajiwara ,  Ryosuke Yoshihiro

IPC分类号： F04B49/00 ,  B60H1/32 ,  F04B27/18 ,  F04B49/06 ,  F04B1/26 ,  F04B1/12

CPC分类号： F04B27/1804 ,  F04B2027/1813 ,  F04B2027/1827 ,  F04B2027/1831 ,  F04B2027/1854 ,  F04B2027/1877

摘要： To provide a capacity control valve for a variable displacement compressor of a Pd-Ps differential pressure-controlled type, which suppresses overshooting of the differential pressure between the discharge pressure Pd and the suction pressure Ps which can occur when the differential pressure is changed in response to a stepwise change in the solenoid current. The capacity control valve includes a valve section having a Pd-Pc valve for control of the flow rate of refrigerant flowing from a discharge chamber to a crankcase and a Pc-Ps valve for control of the flow rate of refrigerant flowing from the crankcase to a suction chamber operating in a manner interlocked with the Pd-Pc valve. A spool valve element is provided on a valve element of the Pc-Ps valve, whereby in a stroke region where the Pd-Pc valve is toward the fully-closed position, refrigerant is allowed to pass through the clearance between the spool valve element and the valve hole of the Pc-Ps valve, to cause the Pc-Ps valve to have a characteristic that the opening area thereof does not change in response to a change in stroke. This makes it possible to suppress sharp changes in the pressure Pc in the crankcase due to the existence of the clearance, even if the solenoid current is stepwise sharply changed.

摘要翻译： 为了提供用于Pd-Ps差压控制型的可变排量压缩机的容量控制阀，其抑制当压差响应变化时可能发生的排出压力Pd和吸入压力Ps之间的压差过大 到螺线管电流的逐步变化。 容量控制阀包括具有用于控制从排出室向曲轴箱流动的制冷剂的流量的Pd-Pc阀的阀部和用于控制从曲轴箱流向曲轴箱的制冷剂流量的Pc-Ps阀 吸入室以与Pd-Pc阀互锁的方式操作。 在Pc-Ps阀的阀元件上设置有滑阀元件，由此在Pd-Pc阀朝向完全关闭位置的行程区域中，允许制冷剂通过滑阀元件和 Pc-Ps阀的阀孔，以使Pc-Ps阀具有响应于行程变化而使其开口面积不变化的特性。 这使得即使螺线管电流逐步急剧变化，也可以抑制由于存在间隙而导致的曲轴箱中的压力Pc的急剧变化。

公开(公告)号：US06783110B2

公开(公告)日：2004-08-31

申请号：US10308211

申请日：2002-12-02

申请人： Hisatoshi Hirota ,  Tokumi Tsugawa ,  Katsumi Koyama ,  Toshiyuki Shiota ,  Yuusuke Inoue

发明人： Hisatoshi Hirota ,  Tokumi Tsugawa ,  Katsumi Koyama ,  Toshiyuki Shiota ,  Yuusuke Inoue

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。

公开(公告)号：US06279331B1

公开(公告)日：2001-08-28

申请号：US09543538

申请日：2000-04-05

申请人： Hisatoshi Hirota

发明人： Hisatoshi Hirota

IPC分类号： F25B500

CPC分类号： F04B27/1804 ,  B60H1/00885 ,  B60H1/3205 ,  B60H1/3211 ,  B60H1/3219 ,  B60H2001/325 ,  B60H2001/3252 ,  B60H2001/3255 ,  B60H2001/3263 ,  B60H2001/3275 ,  F04B2027/1813 ,  F04B2027/1831 ,  F04B2027/189 ,  F25B41/04 ,  F25B49/022 ,  F25B2400/0403 ,  F25B2400/0411 ,  F25B2400/16

摘要： A vehicular refrigerating cycle with a by-pass line is provided, whereby even in an environment of extremely low temperature with the refrigerating cycle left at rest after being operated in cooling mode, refrigerant accumulated in a condenser can be driven out of the condenser to provide subsequent heating functions by an evaporator in a prescribed manner. A capacity control can be set such that the capacity of a compressor only is allowed to start to decrease from a maximum capacity when a compressor suction pressure ps has dropped to a value of 2 atmospheres (absolute pressure) or less in a state in which refrigerant flows through a condenser without passing through a bypass line.

摘要翻译： 提供了具有旁路线路的车辆制冷循环，由此即使在冷却模式下运转后，在冷冻循环静止的极低温环境中，也可以将冷凝器中积聚的制冷剂从冷凝器驱出， 随后通过蒸发器以规定的方式加热功能。 可以设定容量控制，使得仅当压缩机吸入压力ps已经下降到2个大气压（绝对压力）以下的值时，才允许压缩机的容量从最大容量开始降低，在制冷剂 流经冷凝器而不通过旁路管线。

公开(公告)号：US06267562B1

公开(公告)日：2001-07-31

申请号：US09411293

申请日：1999-10-04

申请人： Hisatoshi Hirota

发明人： Hisatoshi Hirota

IPC分类号： F04B126

CPC分类号： F04B27/1804 ,  F04B2027/1813 ,  F04B2027/1827 ,  F04B2027/1859 ,  F04B2027/1881

摘要： At the suction side of a variable displacement compressor a valve structure is provided which either responds to a relative differential pressure value or a relative pressure value or a relative temperature value of the refrigerant processed by the variable displacement compressor such that in case of small load and a minimum operation state of the compressor the suction side will be cut-off or in case of large load and simultaneous minimum operation state of the compressor will not be cut-off. The valve structure automatically decides and responds to parameter changes representing in case of the minimum operation state of the compressor a large load or a small load, in order to avoid freezing of the fins of the evaporator in case of small load and to improve the fuel efficiency of the engine driving the compressor in case of large load.

摘要翻译： 在可变排量压缩机的吸入侧，提供阀结构，其响应于可变排量压缩机处理的制冷剂的相对压差值或相对压力值或相对温度值，使得在小负载和 压缩机的最小操作状态为吸入侧将被切断，或者在大负载的情况下，压缩机的同时最小操作状态将不被切断。 阀结构自动地决定并响应表示在压缩机的最小操作状态的情况下的大负载或小负载的参数变化，以便在小负载的情况下避免冷凝蒸发器的散热片并改善燃料 发动机在大负载情况下驱动压缩机的效率。