JP3334467B2 - Draft chamber - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a draft chamber, and more particularly, to a draft chamber which has a simple structure and can be easily assembled on site.

[0002]

2. Description of the Related Art With respect to a conventional draft chamber,
There is one disclosed in Japanese Patent Publication No. Hei 6-16857. Such a draft chamber is intended to reduce transportation costs by enabling on-site assembly. Has a pair of side panels, a back panel, and a ceiling panel. Then, the pair of side panels and the rear panel have a structure in which a heat insulating material is sandwiched between an outer plate and an inner plate made of a metal plate, for example, when connecting the side panel and the rear panel,
A coupling device is provided in several places, and this coupling device is
In one adjacent panel, a hook is mounted so as to be able to start and rotate around a shaft, and an opening is provided in the inner plate of the panel so that it can be operated from the outside with a tool such as a wrench. This is a structure in which a pin is provided on which the hook can be locked. By rotating the shaft using a tool such as a wrench, the hook can be locked on the pin and the panels can be connected to each other. Further, the ceiling panel is fixed to the side panel and the rear panel thus erected by screws from above.

[0003]

Therefore, in the conventional draft chamber, the connection between the panels is performed by using a connecting device comprising a hook and a pin provided on a rotatable shaft. However, there is a problem in that the structure becomes complicated and the assembling work with the connecting device is troublesome. In addition, when installing the draft chamber on the site, the ceiling panel is screwed from the top to the side panel and the rear panel. There is also a problem that the draft chamber cannot be assembled when the ceiling is low because a space for the draft chamber is required.

Accordingly, the present invention is to provide a draft chamber which is easy to assemble on site and can be constructed even when the distance between the draft chamber and the ceiling is almost negligible at the installation site. is there.

[0005]

Means for Solving the Problems The inventor of the present invention has made intensive studies to solve the above-mentioned problems, and as a result, the rear panel is erected by fitting the rear of the upper surface of the lower base and the lower surface of the rear panel into concave and convex. The side panels are engaged with the hook pieces and the locking holes on both sides of the rear panel, the side panels are erected on both sides of the lower base, and a fitting portion capable of fitting to the upper end of the rear panel and the side panels is provided. Developed a draft chamber characterized in that the ceiling panel was attached by fitting and the upper part of the back panel and both side panels and the fitting part of the ceiling panel were assembled by screwing from the horizontal direction, and the present invention was provided. Is what you do.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
An embodiment that embodies the draft chamber of the present invention will be described. The draft chamber A shown in FIGS. 1 to 14 relates to a representative embodiment according to the present invention.

As shown in FIGS. 1 and 2, the draft chamber A is provided with a front door 3 slidably up and down on the front of the processing chamber 2 of the draft chamber main body 1.
The balance weight is hung on the other end of the support strip on which the front door 3 is hung to open and close the front door 3.

As shown in FIGS. 1 to 3, the draft chamber A mainly includes a lower base 4, a rear panel 5, a pair of side panels 6, 6, a ceiling panel 7, a lighting box 8, a front door 3, and the like. I have.

The lower base 4 is assembled by a pair of leg panels 9, 9, a door 10, an operation panel 11, and a top plate 12, as shown in FIG.

Further, a rear panel ground rail 13 is provided behind the upper surface of the lower base 4. This ground rail 13,
As shown in FIGS. 4 and 8, an opening 15 is provided in the length direction except for both ends of the lower surface of the rectangular cylindrical body 14, and is set to have substantially the same width as the width of the lower base 4. . And FIG.
As shown in the figure, the ground rail 13 is placed behind the upper surface of the lower base 4 with the opening 15 down, and passes through the opening 15,
A screw 16 is fixed to the lower base 4 from above the rear ground rail 13 and fixed.

As shown in FIGS. 8 and 9, the rear panel 5 is provided with a substantially U-shaped member on the lower surface of the rear panel main body 17 having a size that can be externally fitted to the ground rail 13. A concave groove 18 is formed, and a through hole 20 is formed in the upper piece 19 of the substantially U-shaped member at a position where the ground rail 13 is screwed to the screw 16. 14 to form an L-shaped first fitting ridge 21. Further, as shown in FIG. Pin 23 screwed in the axial direction
And a plurality of locking holes 24 are provided on both sides at predetermined intervals. In the illustrated draft chamber A, as shown in FIG. 6, a pair of left and right rear panels 5a and 5b are provided on the side of the upper surface of the lower base 4, and as shown in FIG. On the contact surface between the panel 5b and the left rear panel 5a, a claw piece 25 and a fixing hole 26 which can be respectively engaged are provided, so that two rear panels 5a, 5b can be provided side by side.

As shown in FIG. 12, the side panel 6 has a support portion 28 which is bent outward in an L-shape and extends from the lower surface of the side panel body 27, and the upper surface of the side panel body 27. An upper portion 29 bent outward in an L shape is formed, and a recess is provided at a corner of the upper portion 29 to form a receiving portion 30. As shown in FIG. Downward hook pieces 31 that can be locked in the locking holes 24 of the rear panel 5 are provided at predetermined intervals. In the above-described example, the locking holes 24 are provided on both sides of the surface of the back panel 5 and the hook pieces 31 are provided on the back face of the side panel 6, but the hook pieces 31 bent upward are used. The mounting of the locking holes 24 and the hook pieces 31 can be reversed.

As shown in FIG. 3, the ceiling panel 7 has an exhaust port 32 at the center of the ceiling panel main body 33, and the upper part of the rear panel 5 and a part of the upper parts of the side panels 6, 6 inside. It is a structure that can be fitted. Specifically, as shown in FIG. 11 and FIG. The second fitting concave groove 35 is formed by bending from the rear surface of the rear panel 5 into a U-shape so as to be able to be fitted to the first fitting ridge 21 of the rear panel 5 to form a second fitting concave groove 35. From the front surface, the second fitting ridge 36 is formed by bending forward into an L shape.

As shown in FIGS. 11 and 13, the lighting box 8 has a box-shaped box body 37 having an open top, and is a member for installing a fluorescent lamp. The third fitting concave groove is bent in an L shape with the tip of
A third fitting ridge 41 that can be fitted into the receiving portion 30 of the side panel 6 by forming a front end portion of the side plate 40 outwardly and bending it into a U-shape. Is formed.

A ceiling panel 7 and a lighting box 8 are provided on a rear panel 5 and a pair of side panels 6 and 6 erected on the lower base 4, but the ceiling panel 7 is provided integrally with the upper surface.
The ceiling panel 7 may be provided with a fluorescent lamp.

When assembling the draft chamber A, as shown in FIG.
The panels 25 are connected to each other by engaging the fixing holes 26 of the left rear panel 5a, and the ground is inserted into the U-shaped member through hole 20 provided below the rear panel 5 as shown in FIG. Positioning is performed by positioning the head of a screw 16 protruding from the surface of the rail 13, and the first fitting groove 18 of the rear panel 5 is provided on the ground rail 13 provided behind the upper surface of the lower base 4 as shown in FIG. 5, the hook pieces 31 of the side panel 6 are locked in the locking holes 24 of the rear panel 5, and the side panels 6 are assembled on both sides of the rear panel 5, as shown in FIG. Panel 6 support
A back panel 5 and a pair of side panels 6 and 6 can be erected on the upper surface of the lower base 4 with screws 16 fixed to 28.

Further, as shown in FIGS. 7, 11 and 12, the second fitting groove 35 of the ceiling panel 7 is fitted to the first fitting ridge 21 of the rear panel 5, and Side of
The ceiling panel 7 is engaged with the rear panel 5 and the upper part of the pair of side panels 6 and 6 by fitting 34 into the receiving portions 30 of the side panels 6 and 6, and then shown in FIG. 11 and FIG. The third fitting groove 39 of the lighting box 8 is
The third fitting of the lighting box 8 is fitted together with the fitting ridge 36.
By fitting the fitting ridges 41 to the receiving portions 30 of the side panels 6, 6, the lighting box 8 is engaged with the rear panel 5 and the pair of side panels 6, 6, as shown in FIGS. The ceiling panel 7 and the rear panel 5 are fixed with screws 16 from the inside, and the ceiling panel 7 and the side panels 6, 6 are screwed from the inside.
16 and assemble by fixing the lighting box 8 and the ceiling panel 7 with screws 16 from the inside as shown in FIGS. Can be. In the example described above, the screws 16 are fixed horizontally from the inside to the outside, but the screws 16 can be fixed horizontally from the outside to the inside.

As shown in FIGS. 2 and 14, a baffle having a through hole 42, which is vertically divided into two parts on the front surface of the rear panel 5 and is formed in accordance with the position of the pin 23 of the rear panel 5, is provided. 43, the mounting bolt 22 is screwed into a screw hole formed in the axial direction of the pin 23 through the through hole 42, and pinched and fixed.
As shown in FIG. 3, the front panel 49 is fixed to the front surfaces of the side panels 6 and 6 with screws 16 via the support metal fittings 50, and the side cover 44 is provided on the outer surface of the side panel 6, and the upper surface of the ceiling panel 7 is provided. An exhaust pipe 45 having a damper therein is provided, and a side air guide 4 is provided in front of side panels 6 and 6.
6 and 46 are provided, and an aerowheel 47 communicating with both side air guides 46 and 46 is attached to the upper surface of the top plate 12 of the lower base 4 via a mounting bracket 48, so that the whole can be assembled.

As described above, according to the draft chamber A of the present embodiment, as shown in FIGS. 4 to 7, the rear panel 5 is erected on the upper surface of the lower base 4 by fitting of the unevenness, and the hook of the side panel 6 is formed. The side panels 6, 6 are erected on the upper surface of the lower base 4 by locking the pieces 31 into the locking holes 24 on both sides of the rear panel 5, and the ceiling is provided on the upper part of the rear panel 5 and the both side panels 6, 6 thus erected. Panel 7 and lighting box 8 are attached by fitting of unevenness,
The ceiling panel 7, the side panels 6, 6 and the rear panel 5 are fixed with screws 16 from the inside, and the lighting box 8 and the ceiling panel 7
Can be screwed from the inside and the lighting box 8 and both side panels 6 and 6 can be screwed from the inside, so that the screw 16 can be fastened from the horizontal direction and the draft chamber A can be easily assembled. In addition, since a working space between the upper surface of the draft chamber A and the ceiling is not required, the height of the draft chamber A is not restricted by the height of the ceiling unlike the conventional draft chamber A.

Further, according to the draft chamber A of this embodiment, the back panel 5 and the pair of side panels are provided on the upper surface of the lower base 4 by utilizing the fitting of the unevenness and the engagement between the hook pieces 31 and the locking holes 24. 6, 6, ceiling panel 7, lighting box 8
Since the structure is fixed with the screw 16, the structure is very simple.

It should be noted that the above-described embodiment is merely an example, and the assembly can be made possible by using various other fitting structures such as reversing the fitting unevenness.

[0022]

As apparent from the above description, the following operations and effects are obtained. According to the draft chamber according to the present invention, the rear panel is erected on the upper surface of the lower base by fitting of the unevenness, and the side panel and the hook pieces provided on the rear panel are engaged with the locking holes, and the side panel is positioned on the upper surface of the lower base. Standing in
The ceiling panel is fitted to the upper part of the rear panel and both side panels that are erected in this way, and the ceiling panel, both side panels and the rear panel can be screwed from inside, so screws can be fastened from the horizontal direction. , Not only can the draft chamber be easily assembled,
Since no working space is required between the upper surface of the draft chamber and the ceiling, the height of the draft chamber is not restricted by the height of the ceiling unlike the conventional draft chamber.

Further, according to the draft chamber of the present invention, the rear panel, the pair of side panels, and the ceiling panel are assembled on the upper surface of the lower base by using the fitting of the unevenness and the engagement between the hook pieces and the locking holes. , Because the structure is fixed with screws
It has a very simple structure.

[Brief description of the drawings]

FIG. 1 is a perspective view of a draft chamber of an exemplary embodiment according to the present invention.

FIG. 2 is a longitudinal sectional view of a draft chamber.

FIG. 3 is an exploded perspective view of the draft chamber.

FIG. 4 is a perspective view showing a procedure for assembling the draft chamber.

FIG. 5 is a perspective view showing a procedure for assembling the draft chamber.

FIG. 6 is a perspective view showing a procedure for assembling the draft chamber.

FIG. 7 is a perspective view showing a procedure for assembling the draft chamber.

FIG. 8 is an explanatory sectional view showing a fitted state of the ground rail and the back panel.

FIG. 9 is an explanatory cross-sectional view showing a connection state between a rear panel and a side panel.

FIG. 10 is an explanatory sectional view showing a connection state between the back panel and the back panel.

FIG. 11 is an explanatory sectional view showing a fitting state of the ceiling panel and the lighting box.

FIG. 12 is an explanatory cross-sectional view showing a fitted state between the side panels and the ceiling panel.

FIG. 13 is an explanatory cross-sectional view showing a connection state between the side panels and the lighting box.

FIG. 14 is an enlarged sectional view of a main part with a baffle attached to a rear panel.

[Explanation of symbols]

A Draft chamber 1 Draft chamber main body 2 Processing room 3 Front door 4 Lower stand 5 Back panel 6 Side panel 7 Ceiling panel 8 Lighting box 9 Leg panel 10 Door 11 Operation panel 12 Top plate 13 Ground rail 14 Cylindrical body 15 Opening 16 Screw 17 Back panel body 18 1st
Fitting groove 19 Upper piece 20 Through hole 21 First fitting ridge 22 Mounting bolt 23 Pin 24 Locking hole 25 Claw piece 26 Fixing hole 27 Side panel main body 28 Support part 29 Upper part 30 Receiving part 31 Hook piece 32 Exhaust port 33 Ceiling panel body 34 Side 35 Second fitting groove 36 Second
Fitting ridge 37 Box body 38 Back plate 39 Third fitting concave groove 40 Side plate 41 Third fitting ridge 42 Through hole 43 Baffle 44 Side cover 45 Exhaust cylinder 46 Side air guide 47 Aero foil 48 Mounting bracket 49 Front panel 50 Support bracket

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B01L 1/00-1/04 F24F 7/06

Claims (1)

(57) [Claims] 1. A rear panel is erected by fitting the rear of the upper surface of the lower table and the lower surface of the rear panel into concave and convex, and engaging the side panel with hook pieces and locking holes on both sides of the rear panel. A side panel is erected on both sides of the rear panel, and a ceiling panel having a fitting portion that can be fitted to an upper end of the back panel and the both side panels is attached by fitting. A draft chamber characterized in that the fitting portion is assembled with screws from a horizontal direction.