FREEZE VALVE
    7.
    发明授权
    FREEZE VALVE 有权
    冻结阀

    公开(公告)号:EP1090336B1

    公开(公告)日:2003-11-12

    申请号:EP99932899.0

    申请日:1999-06-21

    申请人: KAARTINEN, Niilo

    发明人: KAARTINEN, Niilo

    IPC分类号: G05D7/00 F16L55/10

    摘要: The invention concerns a freeze valve (2) for controlling the flow of small quantities of liquid in a conduit (1). Further objects of the invention are a network of conduits, a method of opening a freeze valve and a process for the separation of liquid fractions, which all involve the freeze valves (2) of the invention. The freeze valve (2) is defined by a tubular wall (3) integral with the conduit (1) and comprises a thermal bridge (4) connecting said wall to a heat sink (5), to close the valve by freezing the liquid inside the wall, as well as heating means (11) comprising a source of laser beam targeted at the wall, to open the valve by melting the frozen liquid (7). According to the invention the laser beam (13) is produced in the form of a transversally extended shroud and targeted at the wall (3) at a length extending to both sides of the point of connection (6) to the thermal bridge (4), so as to melt the block of frozen liquid (7) simultaneously along its entire length. The beam (13) can have the form of a divergent fan or flattened cone with a cross section corresponding to the elongate ice block (7) inside the wall and a radiation intensity higher in the center (15) of the beam and decreasing towards the beam edges (16). The beam can be obtained from a laser diode (11) and tailored and/or directed by optical means (12) as necessary. The network of conduits with freeze valves can be employed in analyzers for clinical chemistry, and the separation processes can be capillary electrophoresis or chromatography, where the freeze valves are used to immobilize the separated liquid samples.

    摘要翻译: 本发明涉及用于控制导管(1)中少量液体流动的冻结阀(2)。 本发明的其他目的是导管网络,打开冷冻阀的方法和分离液体部分的过程,所有这些都涉及本发明的冻结阀(2)。 冷冻阀(2)由与导管(1)一体的管状壁(3)限定,并且包括将所述壁连接到散热器(5)的热桥(4),通过冷冻内部液体来关闭阀 壁以及包括靶向壁的激光束源的加热装置(11),以通过熔化冷冻液体(7)来打开阀门。 根据本发明,激光束(13)以横向延伸的罩的形式产生并且以延伸到连接点(6)的两侧到热桥(4)的长度作用于壁(3) 以沿着其整个长度同时熔化冷冻液体块(7)。 梁(13)可以具有发散扇或扁平圆锥的形式,其横截面对应于壁内的细长冰块(7)并且辐射强度在梁的中心(15)处更高并且朝向 梁边缘(16)。 该光束可以从激光二极管(11)获得并且根据需要由光学装置(12)定制和/或引导。 具有冻结阀的导管网络可用于临床化学分析仪,分离过程可以是毛细管电泳或色谱法,其中冻结阀用于固定分离的液体样品。

    DISPENSING APPARATUS FOR VISCOUS LIQUIDS
    9.
    发明公开
    DISPENSING APPARATUS FOR VISCOUS LIQUIDS 有权
    液体供给装置为粘性液体

    公开(公告)号:EP1181106A2

    公开(公告)日:2002-02-27

    申请号:EP00937930.6

    申请日:2000-05-26

    IPC分类号: B05C17/00

    摘要: Apparatus (10) for dispensing viscous liquid, such as hot melt adhesive, includes a manifold (14), a dispensing module (12), a heater (50) thermally coupled to the manifold (14), and thermally insulating cover structure (70, 72) secured around both the module (12) and the manifold (14). Air gaps are formed between the cover structure and the heated components inside to further reduce heat transfer. The cover structure (70, 72) may also include heat dissipating fins (70a, 72a). A supply connector (64) associated with the manifold (14) includes an interior flow passage (90), an exterior annular recess (92) and at least one port (94) communicating therebetween. A valve includes a valve seat (107) having an orifice (106) and a sealing surface located around the orifice (106). The valve further includes a valve stem (108) movable between open and closed positions and having a recess (264) in one end and a sealing edge (266) located around the recess (264). A valve module (280) includes an integrated heating element (296) for providing localized heat to the adhesive immediately prior to dispensing.