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1. 发明授权

US4948389A Gas chromatograph having cyro blast coolings 失效
标题翻译：气相色谱仪具有电喷风冷
公开(公告)号：US4948389A
公开(公告)日：1990-08-14
申请号：US355934
申请日：1989-05-22
申请人： Kenneth J. Klein , Wei J. Song , Michael Thompson
发明人： Kenneth J. Klein , Wei J. Song , Michael Thompson
IPC分类号： G01N30/12 , G01N30/30
CPC分类号： G01N30/30 , G01N2030/3007 , G01N2030/3023 , G01N2030/3046 , G01N2030/3084 , G01N30/12
摘要： Apparatus and methods are disclosed for performing a chromatographic separation of a given compound wherein the compound and a carrier gas are passed through an injection port and onto a column and wherein a portion of the column is contained in an oven. The apparatus and method are shown to include a first heater for heating the injection port in response to a first control signal, a first temperature sensor for sensing the temperature of the injection port and for generating a first temperature signal representative of the temperature of the injection port, a second heater for heating the oven in response to a second control signal, a second temperature sensor for sensing the temperature of the oven and for generating a second temperature signal representative of the temperature of the oven and a cooling member for simultaneously cooling the injection port and the column. The cooling member can include various conduit arrangements for directing a flow of cryogen fluid. There is also shown a valve for controlling the flow of cryogen fluid through the cooling member in response to a third control signal, and a control member for receiving the first and second temperature signals, and for generating the first, second and third control signals in relation to the first and second temperature signals, so that the temperature in the injection port and the oven are maintained at a desired level.
摘要翻译：公开了用于进行给定化合物的色谱分离的装置和方法，其中化合物和载气通过注射口并进入柱，并且其中一部分塔被包含在烘箱中。该装置和方法被示为包括用于响应于第一控制信号加热喷射口的第一加热器，用于感测喷射口的温度的第一温度传感器，以及用于产生代表喷射温度的第一温度信号端口，用于响应于第二控制信号加热烤箱的第二加热器，用于感测烤箱温度并产生代表烤箱温度的第二温度信号的第二温度传感器和用于同时冷却烘箱的冷却部件注射口和柱。冷却构件可以包括用于引导冷冻剂流体流的各种导管装置。还示出了用于响应于第三控制信号控制通过冷却构件的冷冻剂流体流动的阀，以及用于接收第一和第二温度信号的控制构件，以及用于产生第一，第二和第三控制信号与第一和第二温度信号的关系，使得注入口和烘箱中的温度保持在期望的水平。

2. 发明授权

US5032151A System and method for automated cool on-column injection with column diameters less than 530 .mu.m 失效
标题翻译：柱直径小于530微米的自动冷却柱内注射系统和方法
公开(公告)号：US5032151A
公开(公告)日：1991-07-16
申请号：US466181
申请日：1990-01-17
申请人： Kenneth J. Klein , Wei J. Song , Ismael Rodriguez , Richard J. Phillips
发明人： Kenneth J. Klein , Wei J. Song , Ismael Rodriguez , Richard J. Phillips
IPC分类号： G01N30/18 , G01N1/00 , G01N30/16 , G01N30/24 , G01N30/30
CPC分类号： G01N30/24 , G01N2030/185 , G01N2030/3046 , G01N35/1079
摘要： A system and method are shown for performing cool, on-column sample injection into a chromatographic device having a capillary column which injection is achieved through the use of a syringe having a needle. The column diameter is minimized by the provision of an inlet assembly connected to the inlet end of the column, a sealing member disposed in the inlet assembly, for forming a fluid tight seal in the inlet end when the sample is injected onto the column to prevent the sample from escaping and for reducing the effective length of the needle at the point of insertion of the needle into the column and a guide member for reducing the effective length and for supporting the needle during insertion into the column. A temperature controller for controlling the temperature of the column in the region where the sample is injected is also disclosed. The sealing member is shown to include an elastomeric member and further the system includes a mechanism for continuously cooling the elastomeric member. The elastomeric member is shown to include a septum having a bore formed therein for passage of the needle therethrough. A new sample vial closure is also shown for use in the system, which closure applies only a minimal axial force on the needle. In such a system and method the need for a long syringe is obviated. The column inner diameter can be minimized by the system and method which permits the needle of the syringe to having a minimum outer circumference.

3. 发明授权

US5400666A Methods and apparatus for automated on-column injection using a slender needle 失效
标题翻译：使用细针的自动柱上注射的方法和装置
公开(公告)号：US5400666A
公开(公告)日：1995-03-28
申请号：US252955
申请日：1994-06-01
申请人： Wei J. Song
发明人： Wei J. Song
IPC分类号： G01N1/00 , G01N30/02 , G01N30/16 , G01N30/18 , G01N35/06
CPC分类号： G01N35/1079 , G01N30/18 , G01N2030/025 , G01N2030/165
摘要： Methods and apparatus for preventing the failure of slender syringe needles used for on column injection in gas chromatographs are disclosed. A needle holder designed to support the needle precludes bucking deflection beyond the maximum allowable value. In a preferred embodiment, the needle used is a tapered needle that has a proximal diameter and a distal diameter that is smaller that the proximal diameter. In these embodiments, the diameter of the bore through the needle holder is slightly larger than the proximal diameter to permit the full insertion of the entire needle structure. The needle holder bore diameter is sufficiently small, however, to preclude catastrophic failure due to buckling.
摘要翻译：公开了用于防止在气相色谱仪中用于柱注射的细长注射器针筒失效的方法和装置。设计用于支撑针的针架可防止超过最大允许值的翘曲偏移。在优选实施例中，使用的针是具有近端直径和远端直径小于近端直径的锥形针。在这些实施例中，通过针保持器的孔的直径略大于近端直径，以允许整个针结构的完全插入。针保持器孔直径足够小，但是防止由于弯曲引起的灾难性故障。

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