JP2008194608A - Draft chamber - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To constitute the front end part of a working table of a draft chamber so as to prevent a tube and a cord connected to equipment used for working from obstructing. <P>SOLUTION: In the draft chamber, a rectifying plate 31 installed at the front end part 4a of the working table 4 is rotatably held, and the tube 36 and the cord 35 are held by opening the rectifying plate 31, thereafter the rectifying plate 31 is closed, thereby enabling holding them so as to prevent the tube 36 and the cord 35 from obstructing in working of workers. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

    The present invention relates to a draft chamber, and more particularly, to a configuration of a tip portion of a work table in the draft chamber.

    As is well known, the draft chamber generates dangerous substances such as gas and particles during experiments using chemicals, etc., and in order to eliminate the adverse effects on workers (experimenters) etc. due to this, A device that encloses and exhausts substances.

    In such a draft chamber, there is known a draft chamber in which a rectifying plate called an airfoil is provided at the end of the work surface on the front surface for the purpose of smoothing the exhaust airflow on the work surface and reducing the backflow.

As a conventional example of a draft chamber provided with such a rectifying plate, there is an apparatus described in the following patent document.
JP, 8-131850, A The conventional example of this patent documents 1 is the composition as shown in Drawing 6 and Drawing 7. That is, in the figure, 1 is a draft chamber main body, which has a work room 2 and a storage room 3, and a work table 4 is provided in the work room 2. Work is done.

    A lift door 9 is provided at the front opening of the work chamber 2 to open and close the opening. On the other hand, a rear partition plate that forms an exhaust path is formed on the rear surface of the work chamber 2, an exhaust port 14 is formed on the upper part of the main body, and gas in the work chamber is discharged from the exhaust port 14 through the exhaust channel 13. I try to do it. As a result, dangerous substances such as gas generated in the operation as described above are discharged and the air is replaced.

    In addition, an air passage forming plate (a rectifying plate called the above-described air foil) 24 is provided at the distal end portion (opening side) of the work table 4.

    By providing this air passage forming plate 24, the exhaust airflow on the work surface is smoothed and the backflow is reduced, and further, when the worker stands on the front, the turbulent flow near the work surface is reduced.

    When working in such a draft chamber, depending on the type of work, various types of equipment may be installed on the work table.

    On the other hand, the power outlets are provided on the left and right post portions outside the work room or the utility supply panel portion below the air foil in order to prevent corrosion due to gas or the like. For example, in the case of the conventional example shown in FIG. 7, a power outlet 30 is provided on the surface of an air passage forming plate (air foil), and when working in such a conventional draft chamber, When working with various devices, it is necessary to connect the cord to an external outlet.

    Furthermore, various devices are installed in the lower base (storage chamber) 3, and cooling water tubes, vacuum tubes, gas tubes, wirings, etc. from these devices may be introduced into the working chamber 2 of the draft chamber. Many.

    Therefore, these various tubes and cords are placed on the front surface of the work table. For example, the state is as shown in FIG.

    In this way, a tube, a cord, or the like is placed at the position where the worker stands, which interferes with the work. Even if the tube or the cord is placed at the left or right end so as not to disturb the work, the tube or the cord may move due to the movement of the device or the movement of the worker, which may hinder the work.

    The present invention has been made in order to eliminate the drawbacks of the conventional draft chamber as described above, and the configuration of the working table tip of the draft chamber, in particular, the air foil (rectifier plate) can be arranged in a preferable arrangement of tubes and cords. A draft chamber configured as described above is provided.

    The draft chamber of the present invention is characterized in that a current plate is provided on the front surface of a work table in a work room, and the current plate is held so as to be openable and closable.

    As a result, when working with equipment that needs to use tubes, cords, etc. on the workbench, work to open the current plate and form tubes, cords, etc., air flow paths The current plate was closed after passing between the base and the current plate.

    As a result, after the current plate is closed, the tubes and cords are placed in the narrow gap between the work table tip and the current plate, so that they do not touch the operator directly and do not interfere with the work. The movement of tubes and cords can be prevented, and work is not hindered at all.

    Further, the present invention is characterized in that a rack is disposed at the lower end (inside) of the above-described openable / closable current plate at the tip of the work table.

    As described above, by arranging the rack under the current plate, even when a cord to be used is long, it can be held so as not to hinder the work by being housed in this rack. In particular, the rack is configured to be positioned below the rectifying plate, and cords housed and arranged thereby are covered with the rectifying plate, which is extremely preferable for work. This rack is fixed at an appropriate position below the current plate on the front portion of the workbench, but may simply be placed. Then, the arrangement position may be changed or moved as necessary.

    Further, a guide groove may be provided in the lower part of the current plate of the work table. By holding the rack slidably, the stored cords can be placed at an appropriate position.

    Further, if the rack shape is shown in a later embodiment, it is preferable in that the air permeability can be sufficiently maintained and the tube and the cord can be securely held.

    In the draft chamber of the present invention, by making the current plate openable and closable, it is possible to arrange the tubes and cords of various devices necessary for the work without causing any trouble. In addition, by arranging a rack under the current plate, it is possible to arrange long cords together.

    Embodiments of the draft chamber of the present invention will be described based on examples shown in the drawings.

    The embodiment of the draft chamber of the present invention is configured as shown in FIGS.

    FIG. 1 is a front view of a draft chamber of the present invention, FIG. 2 is a side view, and FIG. 3 is an enlarged schematic view showing the vicinity of a current plate for explaining the structure of the current plate.

    1 and 2, the draft chamber of the present invention comprises a main body 1, a work chamber 2, a storage chamber 3, and the like, and has a structure in which a rectifying plate 31 is provided in the vicinity of the tip 4a of the work table 4 so as to be rotatable. . That is, it is rotatably held by the shaft 32a provided on the side wall 32 of the draft chamber.

    Since the rectifying plate 31 is movable, the draft chamber can be moved from the closed state of the rectifying plate 31 as shown in FIG. 3A to the open state as shown in (B).

    As a result, the tube or cord disposed at the tip 4a of the work table 4 when working is opened between the work table 4 and the current plate 31 after the current plate 31 is opened as shown in FIG. In the meantime, it is connected to an outlet through a cord 35, for example. If the current plate 31 is then closed, the cord is held in a state covered with the current plate 31.

    FIG. 4 shows a state in which the cord 35 and the tube 36 are disposed between the tip 4 a of the work table 4 and the rectifying plate 31 and the rectifying plate 31 is closed. As shown in this figure, on the front surface of the work surface, the tube and the cord pass through the lower part of the current plate 31 and are covered with the current plate 31.

    Therefore, even if an operator works while standing on the front surface of the draft chamber (the tip of the work table), the tube and the cord are not disturbed.

    In the draft chamber of the illustrated embodiment, a rack 34 having a shape as shown in FIG. And by using this rack 34, it can prevent that a tube and a code | cord | chord move, for example by arrange | positioning a tube and the code | cord | chord 35 (36) as shown in FIG.5 (B). Further, it is preferable to fold the tubes and cords and arrange them in the rack 34 because the tubes and cords can be arranged without taking more space than necessary.

    This rack is fixed to the lower part of the current plate 31 of the work table 4. However, the rack 34 may be placed at an appropriate position below the current plate 31 without being fixed to the work table 4. And you may move in the lower part of the baffle plate 31 as needed. In that case, if a rack guide groove is provided in the lower part of the current plate and the rack 34 is made slidable along the rack guide groove, the rack is moved so that the tube or cord is placed at the most desirable position by the work. It becomes easy to install.

    The structure of the rack 34 is not limited as long as it can store and hold tubes and cords. By forming a large number of holes 34a as shown in the figure, the air flow path between the work table 4 and the rectifying plate 31 is provided. Even if it is disposed inside, it is desirable because air can flow through the hole 34a to ensure ventilation. Further, it is preferable that the tube or the cord can be held so as not to move by passing the tube or the cord through any of the holes 34a of the rack 34.

    The draft chamber of the present invention is provided at the tip of the workbench and is rotated so that the current plate can be opened and closed. By opening the current plate, the tube and the cord are held by the current plate. For easy operation, and by closing the baffle plate, the tube and cord will not interfere with the work, and the air flow on the work surface on the workbench will be smooth and prevent backflow, etc. A sufficient effect as a current plate can be secured.

Front view of the draft chamber of the present invention Side view of the draft chamber of the present invention The expanded sectional view of the principal part of the draft chamber of the present invention The expanded perspective view of the principal part of the draft chamber of the present invention Enlarged perspective view of a rack used in the draft chamber of the present invention Side view showing air flow in a conventional draft chamber Front view of conventional draft chamber The figure which shows the arrangement state of the cord and tube of the conventional draft chamber

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Draft chamber body 2 Work room 3 Storage room 4 Work table 31 Current plate 34 Rack 35 Code 36 Tube

Claims (3)

A draft chamber comprising a work chamber, a work table on a lower surface thereof, and a current plate provided at a tip of the work table, wherein the current plate can be opened and closed. 2. The draft chamber according to claim 1, wherein a rack is provided at a lower end of the current plate at a tip portion of the work table. 3. The draft chamber according to claim 2, wherein the rack has a shape having a large number of holes on its side wall.

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