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公开(公告)号：US6071085A
公开(公告)日：2000-06-06
申请号：US351735
申请日：1999-07-12
申请人： Karl-Heinz Bernhardt
发明人： Karl-Heinz Bernhardt
CPC分类号： F04B25/005 , F04B37/14 , F04B37/20 , F04B2205/061 , F04C2220/50
摘要： A gas ballast system for a multi-stage positive displacement pump in which a first stage includes at least one positive displacement pump stage, is equipped with an inlet valve and an outlet valve, and is connected with the following stage by an intermediate vacuum chamber, with the gas ballast system including a first conduit for supplying gas into the intermediate vacuum chamber, and a second conduit for supplying gas from the intermediate vacuum chamber into a pump chamber of the first stage or to a suction region of the first stage.
摘要翻译： 一种用于多级容积式泵的气镇压系统，其中第一级包括至少一个正排量泵级，配备有入口阀和出口阀，并通过中间真空室与后级连接， 所述气镇压系统包括用于将气体供应到中间真空室中的第一管道和用于将气体从中间真空室供应到第一级的泵室或第一级的抽吸区域的第二管道。
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公开(公告)号：US5486106A
公开(公告)日：1996-01-23
申请号：US321893
申请日：1994-10-14
申请人： Karl Hehl
发明人： Karl Hehl
IPC分类号： F04B49/08 , B29C45/82 , F04B49/06 , F15B11/00 , F15B11/028 , G05D3/20 , G05D16/20 , B29C45/80
CPC分类号： G05D16/208 , B29C45/82 , F04B49/065 , G05D3/20 , F04B2205/061
摘要： In a hydraulic device a variable capacity pump adapted to record a differential pressure via a control valve is actuated in such a way that a constant operational pressure gradient is maintained. Since the variable capacity pump is driven by a rotary current motor, which is connected to a current source by a frequency converter and is regulable with regard to its speed, it is possible to control hydraulic consumers in an energy-saving manner at a reasonable price.
摘要翻译： 在液压装置中，适于通过控制阀记录差压的可变容积泵被致动以保持恒定的操作压力梯度。 由于变容量泵由旋转电流电动机驱动，旋转电动机通过变频器连接到电流源，并且关于其速度可调节，可以以合理的价格以节能的方式控制液压消费者 。
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公开(公告)号：US08186172B2
公开(公告)日：2012-05-29
申请号：US11894320
申请日：2007-08-20
IPC分类号： F25B49/00
CPC分类号： F04B27/1804 , F04B2205/01 , F04B2205/061 , F04B2205/062 , F04B2205/08 , F04B2205/09 , F25B2700/13
摘要： A structure for sensing refrigerant flow rate in a compressor. The structure includes a passage forming member, a restriction hole, a differential pressure-type flow rate sensor, and a partition plate. The compressor includes a housing connected to an external refrigerant circuit via a refrigerant passage. The passage forming member is connected to an outer surface of the housing and forms a part of the refrigerant passage. The restriction hole divides the refrigerant passage into an upstream passage and a downstream passage. The upstream passage is formed in either the housing or the passage forming member. The sensor is provided in the passage forming member and detects pressure in the upstream passage and pressure in the downstream passage to sense flow rate of refrigerant in the refrigerant passage. The partition plate is disposed between the housing and the passage forming member. The restriction hole is formed in the partition plate to extend through the partition plate.
摘要翻译： 用于感测压缩机中的制冷剂流量的结构。 该结构包括通道形成构件，限制孔，差压式流量传感器和隔板。 压缩机包括通过制冷剂通道连接到外部制冷剂回路的壳体。 通道形成构件连接到壳体的外表面并形成制冷剂通道的一部分。 限制孔将制冷剂通道分成上游通道和下游通道。 上游通道形成在壳体或通道形成构件中。 传感器设置在通道形成构件中，并且检测上游通道中的压力和下游通道中的压力以感测制冷剂通道中制冷剂的流量。 分隔板设置在壳体和通道形成构件之间。 在隔板中形成限制孔以延伸穿过隔板。
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公开(公告)号：US5241821A
公开(公告)日：1993-09-07
申请号：US864626
申请日：1992-04-07
申请人： Tatsuyuki Hoshino , Kunifumi Goto
发明人： Tatsuyuki Hoshino , Kunifumi Goto
CPC分类号： B60R16/08 , F04B49/08 , F04B2205/061 , F04B2207/0413
摘要： An improved hydraulic system for a vehicle includes a swash plate type variable capacity hydraulic pump that is operably coupled to an engine. A hydraulic motor for driving an air conditioning compressor and a power steering hydraulic mechanism having less fluid demand than that of the hydraulic motor are disposed in a first and a second fluid lines respectively. First, second and third nozzles are disposed within the fluid lines. The volume of fluid controlled by the first nozzle is larger than that of the second nozzle, which is larger than that of the third nozzle. The first fluid line is depressurized by the first nozzle when the hydraulic motor is used, while the second fluid line is depressurized by the second nozzle when the power steering mechanism is used. When neither the hydraulic motor nor the power steering mechanism is used, the pressure in the fluid line on the circulation side is reduced to nearly zero by the third nozzle. The hydraulic cylinder is coupled to a swash plate, and a tracer valve adjusts the quantity of fluid in a hydraulic cylinder to control the inclination angle of the swash plate, as a function of the pressure in the fluid on the hydraulic pump side and the pressure in the depressurized fluid line on the power steering mechanism side.
摘要翻译： 用于车辆的改进的液压系统包括可操作地联接到发动机的斜盘式可变容量液压泵。 用于驱动空调压缩机的液压马达和具有比液压马达的流体需求少的动力转向液压机构分别设置在第一和第二流体管线中。 首先，第二和第三喷嘴设置在流体管线内。 由第一喷嘴控制的流体的体积大于第二喷嘴的流体体积，其大于第三喷嘴的体积。 当使用液压马达时，第一流体管线被第一喷嘴减压，而当使用动力转向机构时，第二流体管线被第二喷嘴减压。 当不使用液压马达和动力转向机构时，通过第三喷嘴将循环侧的流体管线中的压力降低到几乎为零。 液压缸联接到斜盘，示踪阀调节液压缸中的流体的量，以根据液压泵侧的流体压力和压力来控制斜盘的倾斜角度 在动力转向机构侧的减压流体管路中。
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5.发明授权Means and method for varying margin pressure as a function of pump displacement in a pump with load sensing control 失效用于在具有负载感测控制的泵中改变作为泵位移的函数的裕度压力的方法和方法
公开(公告)号：US6033188A
公开(公告)日：2000-03-07
申请号：US32052
申请日：1998-02-27
CPC分类号： F04B49/08 , F04B2201/1203 , F04B2205/061 , F04B2205/09
摘要： A pump system includes a variable fluid displacement pump having a pressure line which is connected to a pressure load and connected to a load sensing control. A variable orifice is located downstream from the load sensing control. The variable orifice is fluidly connected to the load sensing control in a servo pressure conduit such that the margin pressure varies proportionally with respect to the fluid displacement Of the pump. The variable orifice can take many different forms, including a variable cross sectional area gap between the housing and an elongated servo piston longitudinally slidable therein. A longitudinal slot having uniformly increasing depth along the length of the servo piston gives the servo piston a cross sectional area which varies along its length. Thus, a variable orifice results.
摘要翻译： 泵系统包括可变流体排量泵，其具有连接到压力负载并连接到负载感测控制的压力线。 可变孔口位于负载感测控制器的下游。 可变孔口在伺服压力管道中流体地连接到负载感测控制器，使得边缘压力相对于泵的流体位移成比例地变化。 可变孔可以采取许多不同的形式，包括壳体与可在其中纵向滑动的细长伺服活塞之间的可变横截面积间隙。 沿着伺服活塞的长度具有均匀增加的深度的纵向槽给予伺服活塞沿其长度变化的横截面积。 因此，产生可变孔口。
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公开(公告)号：US4432230A
公开(公告)日：1984-02-21
申请号：US381799
申请日：1982-05-25
申请人： John A. Stahler , Takashi Yamaguchi
发明人： John A. Stahler , Takashi Yamaguchi
CPC分类号： F04B51/00 , F04B2205/061 , F04B2207/041
摘要： A method and apparatus are disclosed for calibrating the flow rate of a pump. The apparatus includes a high pressure pump, a critical flow orifice and a receptacle or air bag. The high pressure pump pumps a fluid, such as air, through the orifice into the receptacle at pressure sufficient to maintain the flow rate past the orifice in the critical region wherein flow rate is essentially independent of pressure. The receptacle is filled for a precisely determined time thereby providing a known amount of air in the receptacle. Through a valving arrangement the receptacle is then evacuated by the pump to be calibrated and the time required to evacuate the receptacle is determined. This permits calibration of the flow rate of the pump under test. An electronic circuit including a microprocessor automatically performs the timing functions and flow rate calculations.
摘要翻译： 公开了用于校准泵的流量的方法和装置。 该装置包括高压泵，临界流量孔和容器或气囊。 高压泵将流体（例如空气）通过孔口泵送到容器中，压力足以将流速保持在临界区域中的流速，其中流速基本上不受压力的影响。 容器被填充精确确定的时间，从而在容器中提供已知量的空气。 通过阀门装置，然后由待校准的泵抽出容器，并确定排出容器所需的时间。 这允许校准被测泵的流量。 包括微处理器的电子电路自动执行定时功能和流量计算。
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公开(公告)号：US20020085929A1
公开(公告)日：2002-07-04
申请号：US09992452
申请日：2001-11-16
发明人： Paolo Passerini
IPC分类号： F04B049/00
CPC分类号： F04B35/06 , F04B41/02 , F04B49/022 , F04B49/22 , F04B2205/061 , F04B2205/063
摘要： An integrated instrument assembly for compressors, having a pressure switch and a pressure reducer connected to each other by a pneumatic circuit, is connectable to a compressor having a compressed-air tank communicating with the pneumatic circuit; the pressure switch and pressure reducer being supported on a supporting member having the pneumatic circuit.
摘要翻译： 一种用于压缩机的集成仪器组件，其具有通过气动回路连接的压力开关和减压器，可连接到具有与气动回路连通的压缩空气罐的压缩机; 压力开关和减压器被支撑在具有气动回路的支撑构件上。
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8.发明授权公开(公告)号：US06311489B1
公开(公告)日：2001-11-06
申请号：US09509243
申请日：2000-03-23
申请人： Helmut Stangl , Detlef van Bracht , Mikko Erkkilae
发明人： Helmut Stangl , Detlef van Bracht , Mikko Erkkilae
IPC分类号： F16D3102
CPC分类号： F04B49/08 , F04B2205/061
摘要： A control device for an adjustable hydraulic pump (1), wherein the hydraulic pump is connected to a plurality of users, by delivery lines (5a-d). A first control line (18a-d), is connected to each of the delivery lines downstream of a respective proportioning throttle (6a-d). A first pressure change device (17) selects a highest pressure prevailing in the first control lines and supplies it to a delivery flow control valve (15), which controls an adjusting pressure for an adjusting device (7) for the hydraulic pump, based on a pressure difference between the highest pressure from the first pressure change device and a pressure from a second control line (19) connected to the output of the pump. A power control valve (27) is connected between the first control lines of a power-controlled group of users and a pressure medium tank (19), with pressure from the first control lines acting to open the power control valve, and the adjusting device acting, via a measuring spring arrangement (29), to close the power control valve. The first control lines of a non-power-controlled group of users are separated from the power control valve.
摘要翻译： 一种用于可调节液压泵（1）的控制装置，其中所述液压泵通过输送管线（5a-d）连接到多个使用者。 第一控制管线（18a-d）连接到相应配比节流阀（6a-d）下游的每个输送管线。 第一压力改变装置（17）选择第一控制线中的最高压力并将其提供给输送流量控制阀（15），该控制阀控制用于液压泵的调节装置（7）的调节压力，基于 来自第一压力改变装置的最高压力与连接到泵的输出端的第二控制管线（19）的压力之间的压力差。 功率控制阀（27）连接在动力控制用户组的第一控制线和压力介质箱（19）之间，来自第一控制线的作用力用于打开动力控制阀，调节装置 通过测量弹簧装置（29）作用，以关闭功率控制阀。 非功率控制组用户的第一控制线与功率控制阀分离。
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9.发明申请公开(公告)号：US20080271793A1
公开(公告)日：2008-11-06
申请号：US12091595
申请日：2006-10-27
IPC分类号： F16K17/04
CPC分类号： F15B11/165 , F04B49/002 , F04B49/08 , F04B2205/061 , F04B2205/062 , F15B2211/20553 , F15B2211/253 , F15B2211/40515 , F15B2211/41572 , F15B2211/455 , F15B2211/6058 , G05D7/0126 , Y10T137/7925
摘要： The invention relates to a load-pressure-controlled fees flow regulator (1) for adjusting the feed volume of an adjustable hydraulic pump (2) which feeds in a working line (3). The load-pressure-controlled feed flow regulator (1) has an adjusting device (5) for adjusting the feed volume of the hydraulic pump (2). The adjusting device (5) is acted on with an adjusting pressure in order to adjust the feed volume of the hydraulic pump (2). The level of the adjusting pressure is generated by an adjusting pressure regulating device (17). In addition to the adjusting pressure regulating device (17), the fees flow regulator (1) has a damping device (30).
摘要翻译： 本发明涉及一种用于调节在工作线路（3）中进给的可调节液压泵（2）的进料量的负载压力控制费用流量调节器（1）。 负载压力控制进料流量调节器（1）具有用于调节液压泵（2）的进料量的调节装置（5）。 调节装置（5）以调节压力作用，以便调节液压泵（2）的进料量。 调节压力的水平由调节压力调节装置（17）产生。 除了调节压力调节装置（17）之外，费用流量调节器（1）具有阻尼装置（30）。
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公开(公告)号：US20080041080A1
公开(公告)日：2008-02-21
申请号：US11894320
申请日：2007-08-20
IPC分类号： F25B41/06
CPC分类号： F04B27/1804 , F04B2205/01 , F04B2205/061 , F04B2205/062 , F04B2205/08 , F04B2205/09 , F25B2700/13
摘要： A structure for sensing refrigerant flow rate in a compressor. The structure includes a passage forming member, a restriction hole, a differential pressure-type flow rate sensor, and a partition plate. The compressor includes a housing connected to an external refrigerant circuit via a refrigerant passage. The passage forming member is connected to an outer surface of the housing and forms a part of the refrigerant passage. The restriction hole divides the refrigerant passage into an upstream passage and a downstream passage. The upstream passage is formed in either the housing or the passage forming member. The sensor is provided in the passage forming member and detects pressure in the upstream passage and pressure in the downstream passage to sense flow rate of refrigerant in the refrigerant passage. The partition plate is disposed between the housing and the passage forming member. The restriction hole is formed in the partition plate to extend through the partition plate.
摘要翻译： 用于感测压缩机中的制冷剂流量的结构。 该结构包括通道形成构件，限制孔，差压式流量传感器和隔板。 压缩机包括通过制冷剂通道连接到外部制冷剂回路的壳体。 通道形成构件连接到壳体的外表面并形成制冷剂通道的一部分。 限制孔将制冷剂通道分成上游通道和下游通道。 上游通道形成在壳体或通道形成构件中。 传感器设置在通道形成构件中，并且检测上游通道中的压力和下游通道中的压力以感测制冷剂通道中制冷剂的流量。 分隔板设置在壳体和通道形成构件之间。 在隔板中形成限制孔以延伸穿过隔板。
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