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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
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。
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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
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。
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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。
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公开(公告)号：US20050066674A1
公开(公告)日：2005-03-31
申请号：US10942124
申请日：2004-09-16
CPC分类号： F25B1/04 , F25B41/062 , F25B49/022 , F25B2341/065 , F25B2341/0683 , F25B2400/0411 , F25B2500/15 , Y02B30/72
摘要： To provide a refrigeration cycle which is capable of reducing power consumption while solving the problems of hunting and oil circulation. The refrigeration cycle is formed by combining an expansion valve that controls the flow rate of refrigerant supplied to an evaporator such that refrigerant at the outlet of the evaporator always maintains a predetermined level of superheat, in normal times, and is equipped with a minimum flow rate-securing device capable of allowing the refrigerant to flow at a predetermined minimum flow rate when the flow rate is most restricted, with a variable displacement compressor.
摘要翻译： 提供一种在解决狩猎和油循环的问题的同时能够降低功耗的制冷循环。 制冷循环通过组合一个膨胀阀来形成，该膨胀阀控制供应到蒸发器的制冷剂的流量，使得在蒸发器的出口处的制冷剂在正常时间内始终保持预定的过热水平，并且配备有最小流量 能够允许制冷剂在流量最大限制的情况下以预定的最小流量流动的可变排量压缩机。
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公开(公告)号：US20050053474A1
公开(公告)日：2005-03-10
申请号：US10918420
申请日：2004-08-16
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。
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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：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。
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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。
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公开(公告)号：US06192695B1
公开(公告)日：2001-02-27
申请号：US09179775
申请日：1998-10-27
申请人： Hisatoshi Hirota
发明人： Hisatoshi Hirota
IPC分类号： F25B4100
CPC分类号： F25B41/04 , F25B41/043 , F25B43/006
摘要： A refrigerating cycle with a by-pass duct 5 in which heat exchange for heating is arranged to be performed in an evaporator 4 without passing refrigerant through a condenser 2 is designed to perform an auxiliary heating mode suitable for the instantaneous conditions by controlling the amount of refrigerant circulating in response to the load and the like. A by-pass duct 5 for supplying the refrigerant from the compressor 1 to the evaporator 4 without passing it through the condenser 2 is placed in juxtaposition. Between the outlet of the evaporator 4 and the inlet of the compressor 1 an accumulator 6 for temporarily storing low-pressure refrigerant liquid is provided so that the amount of refrigerant circulating is controlled by accumulator 6 while the refrigerant circulates via by-pass duct 5 without passage through condenser 2.
摘要翻译： 通过在不使制冷剂通过冷凝器2的情况下在蒸发器4中配置进行加热用热交换的旁通管道5的制冷循环，设计为通过控制即时状态来进行适合瞬时状态的辅助加热模式 制冷剂响应负载等循环。 用于将制冷剂从压缩机1供给到蒸发器4而不通过冷凝器2的旁通管道5并列放置。 在蒸发器4的出口和压缩机1的入口之间设置有用于临时存储低压制冷剂液体的蓄能器6，以便制冷剂循环的量由蓄能器6控制，同时制冷剂经由旁路管道5循环而没有 通过冷凝器2。
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公开(公告)号：US6152178A
公开(公告)日：2000-11-28
申请号：US467323
申请日：1999-12-20
申请人： Hisatoshi Hirota , Katsumi Koyama
发明人： Hisatoshi Hirota , Katsumi Koyama
IPC分类号： F16K11/07 , F16K11/048 , F16K31/06 , F16K31/42 , F25B41/04 , F16K11/044
CPC分类号： F25B41/046 , F16K11/048 , F16K31/423 , Y10T137/86839
摘要： In a four-way directional control valve of simplified construction and reduced manufacturing costs, first and second hollow cylindrical valve elements are arranged coaxially. Adjacent to opposite ends of the valve elements, first and second valve seats and first and second valve closure elements are provided. First and second pressure-regulating chambers are arranged between separator walls of the valve elements and first and second partition walls associated to the first and second valve seats. A pilot valve can be switched between switching positions for introducing high-pressure fluid originating from a first pipe into the first or second pressure-regulating chamber via a common high-pressure passage, a high pressure introducing hole and two pilot holes, respectively, associated to the pressure-regulating chambers. The control valve can be switched into a state where the first pipe communicates with the fourth and the second pipe communicates with the third pipe and to another state where the first pipe communicates with the third pipe and the second pipe communicates with the fourth pipe.
摘要翻译： 在简化结构并降低制造成本的四通方向控制阀中，第一和第二中空圆柱形阀元件同轴布置。 邻近阀元件的相对端，提供第一和第二阀座以及第一和第二阀闭合元件。 第一和第二压力调节室设置在阀元件的分离器壁与与第一和第二阀座相关联的第一和第二分隔壁之间。 可以在用于将来自第一管的高压流体经由共同的高压通道，高压引入孔和两个引导孔分别引入第一或第二压力调节室的切换位置之间切换导阀 到压力调节室。 控制阀可以切换到第一管与第四管连通的状态，第二管与第三管连通，第二管与第三管连通，第二管与第四管连通。
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