Free-diaphragm pump
    61.
    发明授权
    Free-diaphragm pump 有权
    自由隔膜泵

    公开(公告)号:US06402486B1

    公开(公告)日:2002-06-11

    申请号:US09946752

    申请日:2001-09-04

    Abstract: A pump for ultra-pure fluids comprises a flexible diaphragm separating a fluid chamber from an air chamber. The diaphragm creates an airtight seal between the fluid chamber and the air chamber when a self-centering and trapezoidal shaped wedge compressively forces the diaphragm into a trapezoidal shaped perimeter cavity surrounding the chambers. Any leak from the fluid chamber into the air chamber is detected by a fiber optic system comprising two optical fibers that are disposed at an angle that is calculated to enable light to pass between the fibers only in the presence of a liquid having a predetermined index of refraction. The fiber optic system can also be used to determine the stroke of the pump by disposing the fiber optic lines at an angle calculated to reflect light off of the oscillating diaphragm when the diaphragm arrives at a predetermined location.

    Abstract translation: 用于超纯流体的泵包括将流体室与空气室分开的柔性隔膜。 当自定心和梯形形状的楔形物压缩地将隔膜压迫到围绕室的梯形周边空腔时,隔膜在流体室和空气室之间产生气密密封。 从流体室进入空气室的任何泄漏由包括两个光纤的光纤系统检测,该光纤系统被设置成一角度,以使光仅在存在具有预定指数 折射。 光纤系统还可以用于通过将光纤线设置成当光阑到达预定位置时被计算为反射光离开振荡光阑的角度来确定泵的行程。

    Two stage reciprocating compressors and associated HVAC system and methods
    63.
    发明授权
    Two stage reciprocating compressors and associated HVAC system and methods 有权
    两级往复式压缩机及相关HVAC系统及方法

    公开(公告)号:US06389823B1

    公开(公告)日:2002-05-21

    申请号:US09606412

    申请日:2000-06-29

    Abstract: A two stage reciprocating compressor and associated HVAC systems and methods are disclosed. The reciprocating compressor includes a crankshaft having an eccentric crankpin, a reversible motor for rotating the crankshaft in a forward and a reverse direction, and an eccentric, two position cam rotatably mounted over the crankpin. The crankshaft and cam combine to cause the piston to have a first stroke when the motor operates in the forward direction and a second stroke when the motor operates in the reverse direction. The cam and crankpin also include stabilization means to restrict the relative rotation of the cam about the crankpin. A lubrication system is provided to lubricate the engaging surfaces of the crankshaft and cam and between the cam and the bearing surface of the connecting rod. There is also provided a control for selectively operating the motor either in the forward direction at a first power load or in the reverse direction at a reduced second power load. A protector for the motor is also provided. In addition, the application of the reciprocating compressor to both air conditioning and heat pump systems is disclosed.

    Abstract translation: 公开了两级往复式压缩机和相关的HVAC系统和方法。 往复式压缩机包括具有偏心曲柄销的曲轴,用于使曲轴向前和向后旋转的可逆电动机和可旋转地安装在曲柄销上的偏心的两位置凸轮。 当电动机在正向工作时,曲轴和凸轮组合以使活塞具有第一冲程,并且当电动机沿相反方向工作时,该活塞具有第一冲程。 凸轮和曲柄销还包括限制凸轮围绕曲柄销的相对旋转的稳定装置。 提供润滑系统以润滑曲轴和凸轮的接合表面以及凸轮与连杆的支承表面之间。 还提供了一种用于在减小的第二功率负载下在第一功率负载或反向的方向上选择性地操作电动机的控制。 还提供电机保护器。 此外,公开了往复式压缩机对空调和热泵系统的应用。

    Variable capacity compressor having adjustable crankpin throw structure

    公开(公告)号:US20020038554A1

    公开(公告)日:2002-04-04

    申请号:US09820983

    申请日:2001-03-30

    CPC classification number: F04B39/0094 F04B49/126 F04B2201/0206

    Abstract: A two-stage reciprocating compressor is provided. The compressor includes a block with a single cylinder and associated single compression chamber and single piston. The compressor further includes a crankshaft. The crankshaft has an eccentric crankpin that is operatively connected to the piston. A reversible motor is provided to rotate the crankshaft in a forward direction and in a reverse direction. An eccentric cam is rotatably mounted on the eccentric crankpin. The eccentric cam is held stationary with respect to the crankpin when the crankshaft is rotating in the forward direction. When rotating in the forward direction, the crankshaft drives the piston at a full stroke between a bottom position and a top dead center position. The eccentric cam rotates with respect to the crankpin when the crankshaft is rotating in the reverse direction. When rotating in the reverse direction, the crankshaft drives the piston at a reduced stroke between an intermediate position and the top dead center position.

    Hydraulic displacement pump having two stroke length
    66.
    发明授权
    Hydraulic displacement pump having two stroke length 有权
    液压位移泵具有两个行程长度

    公开(公告)号:US06267571B1

    公开(公告)日:2001-07-31

    申请号:US09376144

    申请日:1999-08-17

    Abstract: A pump having both a short stroke pumping mode and a long stroke pumping mode. The pump has two material cylinders, each with an attached hydraulic cylinder for operating a piston rod extending through both the material and hydraulic cylinders. The piston rods are driven by hydraulic fluid supplied to the hydraulic cylinders and are synchronized so that as one piston rod extends, the other piston rod retracts. The piston rods draw material into the material cylinders when retracting, and pump material out of the material cylinders when extending. To pump in a short stroke mode, a diverter valve is placed between the hydraulic pump and the hydraulic cylinders which diverts an amount of hydraulic fluid to the cylinders, causing the hydraulic pistons to only be extended about half the length of the hydraulic cylinder.

    Abstract translation: 具有短行程泵送模式和长行程泵送模式的泵。 泵具有两个材料缸,每个气缸具有连接的液压缸,用于操作延伸穿过材料和液压缸的活塞杆。 活塞杆由供应到液压缸的液压流体驱动并且同步,使得当一个活塞杆延伸时,另一个活塞杆缩回。 当收回时,活塞杆将材料拉入料筒,延伸时将材料从料筒中取出。 为了在短行程模式下泵送,在液压泵和液压缸之间放置一个转向阀,该液压缸将一定数量的液压流体转向缸体,使得液压活塞只能延伸大约液压缸长度的一半。

    Free-diaphragm pump
    67.
    发明授权
    Free-diaphragm pump 有权
    自由隔膜泵

    公开(公告)号:US6106246A

    公开(公告)日:2000-08-22

    申请号:US166490

    申请日:1998-10-05

    Abstract: A pump for ultra-pure fluids, such as hot, de-ionized water, processing acids, and the like, such as those used in the semiconductor processing industries, is designed to operate at greater than 10 and often 30 or 50 million cycles without failure, and to be failclean. A diaphragm pump maintains a free diaphragm, supported in a contoured chamber for driving and being driven by a piston, able to move radially, rather than absorbing misalignment or distortions. A self-energizing, self-centering, trapezoidal seal captures a constant-thickness diaphragm between a head and body forming the chamber of the pump, separating a body portion and a head portion. An oriented, calendered, multi-layered chlorofluorocarbon diaphragm may be the same material chemically as the body, head, or both. Non-reactive pilots control an operating (motive) fluid, detecting the end-of-stroke whether near the head or near the body. An integrated base controller for the operating fluid supports the apparatus, has a quick exhaust for dumping external-controller air overboard after use, and a bias disk to provide precise, digital, spool positioning within an operational range of pressure differentials. The heads may connect to the body by slip rings, so heads remain registered. Cantilevered portions of the head may absorb secondary creep and provide continued spring loading using exclusively non-reactive materials, no metals, and no elastomers, as a failclean system.

    Abstract translation: 用于超纯流体的泵,例如热,去离子水,加工酸等,例如在半导体加工工业中使用的那些,被设计为在大于10次,通常为30或5000万次循环的情况下操作,而没有 失败,失败。 隔膜泵保持自由的隔膜,支撑在轮廓室中,用于驱动并由能够径向移动的活塞驱动,而不是吸收不对准或扭曲。 自动自动定心的梯形密封件在形成泵的腔室的头部和主体之间捕获恒定厚度的隔膜,分离主体部分和头部部分。 取向的,压延的多层氯氟烃隔膜可以是与身体,头部或两者化学相同的材料。 非反应性驾驶员控制操作(动力)流体,无论是靠近头部还是靠近身体,都可以检测行程终点。 用于工作流体的集成基座控制器支持该装置,具有用于在使用后倾倒外部控制器空气的快速排气,以及偏置盘,以在压力差的操作范围内提供精确的数字式阀芯定位。 头部可以通过滑环连接到身体,因此头部保持注册。 头部的悬臂部分可以吸收二次蠕变,并且使用专门的非反应性材料,没有金属,没有弹性体作为故障清洁系统来提供持续的弹簧加载。

    Variable capacity compressor
    68.
    发明授权
    Variable capacity compressor 失效
    可变容量压缩机

    公开(公告)号:US06099259A

    公开(公告)日:2000-08-08

    申请号:US13154

    申请日:1998-01-26

    CPC classification number: F04B49/126 F04B39/0094 F04B2201/0206

    Abstract: For a refrigerant compressor having two capacities, a camming structure operable in different manners depending on direction of crankshaft rotation, to achieve each capacity while providing top dead center piston operation thru the use of a circular cam bushing which is eccentrically, rotatably mounted on the crankshaft eccentric and within the connecting rod bearing wherein the combined eccentricities of the bushing and the eccentric equal the primary stroke of the piston. A first stop mechanism is provided for stabilizing the bushing on the eccentric upon rotation of the crankshaft in one direction whereby the eccentricities of the eccentric and bushing become aligned and remain so during synchronous rotational orbiting motion of the eccentric and bushing during rotation of the crankshaft for producing full stroke and full capacity. A second stop mechanism is provided for stabilizing the bushing within the bearing upon opposite rotation of the crankshaft whereby the bushing eccentricity becomes and remains substantially aligned with the connecting rod stroke axis while the eccentric moves alone thru its rotational orbit for producing reduced stroke and reduced capacity. A unique electrical control system is also provided for a reversible electric induction motor for selectively and efficiently driving the compressor crankshaft in either direction for providing the different capacities.

    Abstract translation: 对于具有两个容量的制冷剂压缩机,可以根据曲轴旋转的方向以不同的方式操作的凸轮结构,以通过使用偏心地可旋转地安装在曲轴上的圆形凸轮衬套来提供上止点活塞操作来实现每个容量 偏心的和在连杆轴承内,其中衬套和偏心轮的组合偏心等于活塞的主冲程。 提供了第一止动机构,用于在曲轴在一个方向上旋转时使偏心轮上的衬套稳定,由此偏心轮毂和衬套的偏心度变得对准并且在曲轴旋转期间在偏心轮和衬套的同步旋转轨道运动期间保持 产生全中风和全能力。 提供了第二止动机构,用于在曲轴的相反转动时使轴承内的轴承稳定,由此套筒偏心度变得并保持与连杆行程轴线基本上对准,而偏心通过其旋转轨道单独移动以产生减小的行程和减小的容量 。 还提供了一种用于可逆电感应电动机的独特的电气控制系统,用于在任一方向上有选择地和有效地驱动压缩机曲轴,以提供不同的容量。

    Method of controlling the magnetic gap length and the initial stroke
length of a pressure surge fuel pump
    69.
    发明授权
    Method of controlling the magnetic gap length and the initial stroke length of a pressure surge fuel pump 失效
    控制压力喘振燃油泵的磁隙长度和初始行程长度的方法

    公开(公告)号:US5661895A

    公开(公告)日:1997-09-02

    申请号:US507646

    申请日:1995-07-25

    Abstract: Disclosed herein is a method of machining and assembling members of a solenoid fuel pump to produce a magnetic gap length between an armature assembly which includes an armature member having first and second axially spaced end surfaces, and a radially outwardly extending surface forming a part of a housing member having an axis and including an axial bore defined by an inner surface having therein a magnetic gap defined, in part, by the radially outwardly extending surface which extends from the inner surface, and having a counterbore located in spaced axial relation from the radially outwardly extending surface and defined, in part, by an annular shoulder, which method comprises the steps of fabricating the housing member with the axis and including the axial bore defined by the inner surface having therein the magnetic gap defined, in part, by the surface extending radially outwardly from the inner surface, and the counterbore located in spaced outward axial relation from the radially outwardly extending surface and defined, in part, by the annular shoulder, machining the radially outwardly extending surface at a first given length from the annular shoulder, fabricating the armature member with the axially spaced first and second end surfaces, and machining the axial length between the first and second end surfaces of the armature at a second given length, whereby the magnetic gap length is the difference between the first and second lengths.

    Abstract translation: 本文公开了一种加工和组装螺线管燃料泵的构件以在电枢组件之间产生磁隙长度的方法,该电枢组件包括具有第一和第二轴向间隔开的端面的电枢构件和形成一部分 壳体构件具有轴线并且包括由内表面限定的轴向孔,所述轴向孔具有在其中具有由所述内表面延伸的径向向外延伸的表面部分地限定的磁隙,并且具有与径向间隔开的轴向关系的沉孔 该方法包括以下步骤:制造具有轴线的壳体构件,并且包括由内表面限定的轴向孔,其中具有部分由表面限定的磁隙 从所述内表面径向向外延伸,并且所述沉孔位于与所述径向方向间隔开的向外轴向关系中 部分地由环形肩部限定,从环形肩部以第一给定长度加工径向向外延伸的表面,制造具有轴向间隔开的第一和第二端面的电枢构件,并加工轴向长度 在第二给定长度处在衔铁的第一和第二端面之间,由此磁隙长度是第一和第二长度之间的差。

    Method for providing constant flow in liquid chromatography system
    70.
    发明授权
    Method for providing constant flow in liquid chromatography system 失效
    在液相色谱系统中提供恒定流动的方法

    公开(公告)号:US5450743A

    公开(公告)日:1995-09-19

    申请号:US179406

    申请日:1994-01-10

    Inventor: William J. Buote

    Abstract: A method of operating liquid chromatography apparatus. The method includes the steps of determining a given rate of liquid flow desired from a piston pump to the column; establishing for the piston a predetermined stroke length and rate of reciprocation for providing the given rate of liquid flow; determining for each cycle of the pump a desired liquid volume that would be delivered to the column by the pump if producing the given rate of liquid flow; ascertaining for each cycle of the pump the actual liquid volume delivered thereby to the column; determining for a predetermined operating period of the pump the total desired liquid volume that would have been delivered to the column by the pump if producing the given rate of liquid flow during each cycle of the predetermined operating period; and determining the total actual liquid volume delivered to said column by said pump during all cycles of said predetermined operating period. After comparing the total desired liquid volume with the total actual liquid volume one or more subsequent piston cycles are produced that provide a compensating liquid flow rate different than the given rate of liquid flow in response to a determination during the comparing step that a difference exists between the total actual liquid volume and the total desired liquid volume. The compensating rates of liquid flow correct pumping cycle errors that produce incorrect liquid volume flow.

    Abstract translation: 一种操作液相色谱仪的方法。 该方法包括以下步骤:确定从活塞泵到柱的期望的给定液体流速; 为活塞建立预定行程长度和往复运动速率以提供给定的液体流速; 确定泵的每个循环的期望液体体积,如果产生给定的液体流速,将被泵输送到塔中; 确定泵的每个循环,由此输送到塔的实际液体体积; 在泵的预定操作周期中,如果在预定操作周期的每个循环期间产生给定的液体流量,则确定泵的预定操作周期将被泵输送到塔的总期望液体体积; 以及在所述预定操作周期的所有循环期间确定由所述泵输送到所述塔的总实际液体体积。 在将所需总液体体积与总实际液体体积进行比较之后,产生一个或多个后续活塞循环,其响应于比较步骤期间的确定而提供不同于给定液体流速的补偿液体流量, 总实际液体体积和总所需液体体积。 液体流量的补偿率校正泵循环错误,产生不正确的液体体积流量。

Patent Agency Ranking