JPH057575Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a self-temperature-controlled cassette-type capillary column unit having a heating section.

<Prior art> Capillary column units are used in analytical instruments such as gas chromatographs and liquid chromatographs, and have a considerable length. It is used by wrapping it around a frame.

<Problems to be solved by the invention> However, due to its structure, the conventional structure described above is difficult to connect to an analyzer, is difficult to handle, and does not require heating of the capillary column during use. However, in this case, it was necessary to put it in a heating device such as an oven, which inevitably increased the size of the entire system, and it was not possible to adequately handle cases where heating and cooling were repeated. .

The present invention has been made in view of such conventional problems.

<Means for Solving the Problems> The features of the present invention include a capillary column 1 wound in a loop shape (ring shape), and an inlet port side 1a and an outlet port at both ends of the column 1. side 1b
are fixed through the thin plate near both edges, and the suction port side 1a and the discharge port side 1 are provided on the opposite side of the thin plate.
a connector plate 2 on which joint joint packings 3, 3 are protrudingly attached and communicated with b;
It is shaped like a bag formed of a sheet or the like (including foil, thin plate, etc.), and the capillary column 1 is housed inside the bag, and the opening thereof is connected to the connector plate 2.
A bag body 4 attached to the bag body 4 and having cooling holes 6 formed therein at appropriate positions of the bag-like sheet, and a connecting electrode portion 5 formed on the surface of the bag body 4.
a and 5b consist of heating parts 5 for temperature control of the capillary column 1 formed in the connector plate 2 portion, and when installed in the mounting hole 9 of the analyzer main body 7, the inlet side of both ends of the column 1 1a and the discharge port side 1b are connected to the injection passage 8a and the discharge passage 8b of the mounting hole 9 via the joint packings 3, 3, and the connection electrode parts 5a, 5b of the temperature control heating part 5 are connected to the injection passage 8a and the discharge passage 8b of the mounting hole 9. It is a self-temperature-controlled cassette-type capillary column unit that is connected to an external power source.

<Function> With this configuration, the capillary column and the bag body are integrated into the connector plate, making it possible to use the cassette method, making the entire system more compact, and making it more effective due to the heating section and cooling holes. Temperature control is possible.

<Example> FIGS. 1 and 2 show an example of a self-temperature-controlled cassette-type capillary column unit CU according to the present invention.

In the figure, 1 is a capillary column of a desired length that is wound into a loop (ring shape) and bundled.
Inlet side 1 extending in the tangential direction of both ends of this column 1
a and the outlet side 1b are fixed by penetrating into members near both edges of the connector plate 2 made of a thin plate. Joint packings 3, 3 made of graphite or the like are attached to the protrusions on the opposite side thereof for connection to an analysis device to be described later.

Reference numeral 4 denotes a rectangular (quadrangular) bag made of heat-resistant sheet material, film material, metal foil, thin plate, etc. The capillary column 1 is placed inside the bag, and in this state, one end is The opening 4a is attached to the inner edge of the connector plate 2.

A heating section 5 for temperature control of the capillary column 1 housed inside is formed on the outer surface of the bag 4. The method of forming the heating part 5 is not particularly limited, but in the case of metal foil, it may be formed by a printing method, or a sheet-like (film-like) heater wrapped in mica foil, etc. may be attached. is also possible. Further, it may be provided on both the upper and lower sides of the bag body 4. Also, when connecting connector plate 2,
Connection electrodes 5a and 5b are provided on the upper surface of the plate 2 so that the heating section 5 is automatically connected to an external power source. The bag body 4 is also provided with a large number of cooling holes 6 penetrating inside and outside.

Therefore, when the heating section 5 generates heat, the bag body 4 is efficiently and uniformly heated, and the capillary column 1 inside is heated efficiently.
While the temperature can be controlled extremely smoothly, when the heat generation stops, it is effectively cooled by the action of the cooling holes 6.

The above capillary column 1 used in the present invention
Since it is protected by the bag 4, it may be made of glass or quartz and left bare, but it is preferably coated with a protective coating. For example, the resin coat may include a polyimide resin coat, and the metal coat may include an aluminum coat.

In particular, metal coats are highly flexible and can be bent into extremely small loops.
The unit can be made even more compact. Also, this metal coat capillary column 1
In the case of a combination with the metal connector plate 2, it is possible to solder (molten aluminum solder, etc.) to the plates on the inlet side 1a and outlet side 1b of the column 1, making it easy to integrally join the parts. I can do it. Moreover, due to the metal properties, good heat transfer to the entire column 1 can be obtained, and heat retention is also good.

By making the capillary column unit CU into a unit according to the present invention, it is possible to mount the unit CU on the analyzer body 7 in a cassette-like manner with a single touch, as shown in FIG.

That is, the opening positions of the inlet side 1a and the outlet side 1b of the capillary column 1 are matched with the corresponding injection passages 8a and discharge passages 8b of the analyzer main body 7, and It is sufficient to simply insert the connector plate 2 in a cassette style. Then, the inlet side 1a and the outlet side 1b of the capillary column 1 are connected to the injection passage 8a of the analyzer main body 7 via the joint packings 3, 3.
and the discharge passage 8b, respectively. Of course, the heating part 5 also has a connecting electrode 5 provided on the connector plate 2.
It is connected to an external power source through a and 5b. At this time, remove the inserted main capillary column unit.
In order to stably hold the CU, for example, a locking portion 10 may be provided in a part of the mounting hole 9, and a hook 11 that engages with the locking portion 10 may be provided on the connector plate 2.

In this analyzer main body 7, 12 is a material injector, 13 is a detector for analysis results, and 14 is a recorder for analysis results.

Incidentally, when we performed gas chromatographic analysis using a normal packed column and gas chromatographic analysis using the capillary column unit of the present invention using a mixed gas of benzene, toluene, and xylene (BTX gas), we found that the capillary column unit of the present invention The separation ability using the column unit was better than when using the above-mentioned ordinary packed column. In each case, SE-30 (silicon-based) was applied inside the column to form a separation layer.

<Effects of the Invention> As is clear from the above explanation, according to the self-temperature-controlled cassette-type capillary column unit of the present invention, the entire unit can be made more compact. In particular, when a metal-coated capillary column is used, further compactness can be achieved due to its great flexibility. This unitization allows for easy attachment and detachment from the main body of the analyzer. Furthermore, due to this easy attachment and detachment, if several types of capillary column units are prepared in advance, a wide range of analysis modes can be handled. It also becomes easier to store and is more resistant to damage. Furthermore, by forming a heating section, it is possible to quickly control the temperature of the column, and when cooling holes are provided, it is possible to perform repeated cycles of heating and cooling efficiently. Of course, energizing the heating section can be done with one touch by attaching the connector plate.

[Brief explanation of the drawing]

1 is a perspective view showing an example of a self-temperature-controlled cassette-type capillary column unit according to the present invention; FIG. 2 is a perspective view of the capillary column unit shown in FIG. 1 with the bag body removed; FIG. 3 is a partially exploded side view showing the capillary column unit of FIG. 1 in a state immediately before it is installed in the main body of the analyzer. In the figure, CU: self-temperature-controlled cassette-type capillary column unit, 1: capillary column, 1a: suction side of the capillary column,
1b... Capillary column discharge port side, 2...
Connector plate, 3... Joint packing, 4... Bag, 5... Heating section, 5a... Connection electrode, 5b... Connection electrode, 6... Cooling hole, 7...
Analyzer body, 8a... Injection passage, 8b... Discharge passage, 9... Mounting hole.

Claims (1)

[Scope of utility model registration request] A capillary column 1 wound in a loop shape (ring shape), an inlet side 1a and an outlet side 1b at both ends of the column 1 are fixed by penetrating toward both edges of the thin plate, and are fixed to the opposite side of the thin plate. The suction port side 1a
and a connector plate 2 on which joint joint packings 3, 3 for joining are protrudingly attached and communicated with the discharge port side 1b, and a bag-like bag formed of a sheet or the like in which the capillary column 1 is housed. A bag body 4 whose opening is attached to the connector plate 2 and cooling holes 6 are formed through the bag-like sheet at appropriate positions, and a connecting electrode portion formed on the surface of the bag body 4. 5a and 5b are heating parts 5 for temperature control of the capillary column 1 formed in the connector plate 2 portion, and when installed in the mounting hole 9 of the analyzer main body 7, the inlet side of both ends of the column 1 1a and outlet side 1b
are connected to the injection passage 8a and the discharge passage 8b of the mounting hole 9 via the joint packings 3, 3, and the connection electrode parts 5a, 5b of the temperature control heating part 5 are connected to an external power source. A self-temperature controlled cassette type capillary column unit.