JPH0139828B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention has a structure most suitable as an exhaust booth for harmful gases and dust generated during painting or polishing of medium-sized products such as automobiles, wooden products, and machinery. This article relates to a high-performance exhaust booth for painting, etc.

[Prior art]

When painting automobiles or painting or polishing large wooden furniture or steel products, where moving or turning is difficult, it is necessary to install equipment from the ceiling to the floor in order to effectively protect workers from organic solvent gas and fine dust. Vertical flow booths that direct air toward the target are recommended. However, conventional vertical flow booths are designed according to the specifications of each painting job and assembled into a single structure, resulting in equipment costs.

[Purpose of the invention]

The present invention aims to eliminate these drawbacks of the prior art, and its purpose is to provide an exhaust booth for painting, etc., which can reduce manufacturing costs and assembly costs, and is also easy to maintain. There is a particular thing.

[Structure of the invention]

The present invention provides a main ceiling frame having the same area and shape as a work floor surface that requires ventilation, and which suspends a fire prevention curtain from the periphery toward the work floor surface, and is arranged above the central part of the main ceiling frame. A main duct of unit length is installed and has branch pipes on both sides, a pair of flexible pipes whose upper ends are connected to each of the branch pipes and extend symmetrically in the width direction of the main ceiling frame, and a main duct above the floor surface. Install multiple exhaust booth units for painting, etc. in the longitudinal direction, each consisting of a box body with a suction opening that opens toward the work space directly under the main frame of the ceiling and a connecting opening that connects to the lower end of the branch pipe. The present invention relates to a unit assembly type painting booth characterized by being constructed by: Note that in the above configuration,
Each painting exhaust booth unit may further include an air filter having unit length and width.

〔Example〕

Hereinafter, the present invention will be specifically explained based on embodiments shown in the accompanying drawings. Note that this embodiment is a case in which an air filter is provided.

Fig. 1 is a perspective view of the first embodiment, Fig. 2 is a plan view of the same, Fig. 3 is a side view of the same, Fig. 4 is a view taken along the line shown in Fig. 3, and Fig. 5 is a view of the second embodiment. FIG. 6 is a sectional view taken along the line of FIG. 5.

In FIGS. 1 to 4, 50 has the same shape and area as the work floor surface that requires exhaust,
It is also a rectangular ceiling main frame placed above the work floor. Reference numeral 1 denotes an air filter having a constant width (W) and unit length (L) and placed on the main frame 50 of the ceiling, and as is clear from FIGS. 2 and 4, Two sets of frame frames 2 that can be opened and closed
It consists of an air filter element 3 with a In the illustrated embodiment, the air filter element 3 has a bracket 4 on one side thereof projecting in the width direction of the booth, and the bracket 4 has a pivot pin 5 attached to a bracket 4a provided on a side wall of a main ceiling frame 50.
is supported by. On the other hand, a bracket 6 having a through hole is attached to the other side of the air filter element 3, and after the brackets 6, 6 are joined together, the two brackets 6, 6 are removably connected by a connecting rod 7.

Although various configurations are possible for the filter configuration of the air filter element 3, it is formed by a filter part 8 and a lighting part 9, and further includes a filter part 8.
It is conceivable that this could be formed by stretching a crimp wire mesh over the filter frame and pasting a plurality of ultrafoam layers on the crimp wire mesh.

10 is a main duct disposed above the center of the air filter 1, and each duct 10 is
It has connection openings at both ends for connection to the adjacent main ducts 10, respectively. However, the most advanced main duct 10 is blocked. In addition, each main duct 10 has branch pipes 11 and 1 symmetrically arranged on both sides thereof.
1 is provided.

Reference numeral 13 denotes a flexible pipe whose one end is connected to the branch pipe 11 and whose other end extends beyond the ceiling main frame 50 and further downward along both sides of the pipe. The pressure loss of the air flowing inside can be adjusted by appropriately changing . Furthermore, when the flexible tube 13 is shaped like a bellows, paint particles can be effectively attached to the inner surface of the flexible tube 13, and the paint particles in the exhaust gas can be removed. Moreover, after a certain period of use, it can be easily replaced with inexpensive commercially available parts.

14 is a box placed on the floor below both sides of the ceiling main frame 50, and the top surface of the box 14 communicates with the lower end of the flexible pipe 13, as shown in FIG. It has a connection opening 15, and a suction opening 17 that opens toward a work space 16 located directly below the ceiling main frame 50 on its inner side surface.

Moreover, the box body 14 has a plurality of baffle plates 18 inside thereof.
By attaching dust and paint particles to these baffle plates 18, the paint particles in the exhaust gas are removed in the same manner as the bellows structure of the flexible tube 13 described above.

The box body 14 also has a guide plate 19 extending downward like an eave on the upper side surface of the suction opening 17. This guide plate 19 allows the air to pass through the air filter 1 into the work space 16 for painting, etc. As shown in FIG. 4, the air flow flowing into the box body 14 flows down while taking vertical streamlines shown by dotted lines, and is sucked into the box body 14. Such air flow can protect workers engaged in painting and the like from generated organic solvents and fine dust.

A fire prevention curtain 21 is hung from at least the side edge of the ceiling main frame 1 to the floor below, and serves the purpose of shielding the work space 16 and at the same time satisfies the disaster prevention performance regulated by the Fire Service Act. That is, it is possible to completely shield paint particles from scattering outside the booth, and to prevent the spread of fire in the event that a fire occurs.

Booth unit A having such a configuration has the first
As best shown in the figure, only the number (6 in the illustrated embodiment) that meets the required specifications of each factory.
) are connected.

In such a connection, first the main ducts 10 are connected in series, and then both ends of the air filter 1 are connected to both ends of the adjacent air filter 1 by a necessary means. Further, the main duct 10 and the main ceiling frame 50 are suspended and supported from a component (not shown) of the factory building by a hanging rod 22, as shown in FIG. Further, an exhaust fan 23 such as an axial fan is connected to the main duct 10 at the rearmost position, and the exhaust fan 23 is connected to an exhaust duct 24 .

The operation of the unit assembly type painting, etc. exhaust booth having such a configuration will be described below.

If you operate the exhaust fan 23 now, the exhaust fan 23 will discharge the air in the work space 16 for painting etc. to the outside through the box body 14, the flexible pipe 13, the main duct 10, the exhaust fan 23, and the exhaust duct 24. do.

Accordingly, fresh air flows into the work space 16 through the air filter 1 provided in the ceiling main frame 50. Such air draws vertical streamlines as shown in Figure 4,
This protects the operator from organic solvents and dust particles. Moreover, as mentioned above, the box body 1
4 has a baffle plate 18 inside thereof, and since the flexible tube 13 is bellows-shaped, paint particles in the air flow effectively adhere to these inner surfaces, significantly reducing the amount of paint particles in the exhaust gas. I can do it. Furthermore, the pressure loss of the flexible pipe 13 can be adjusted by appropriately changing the connection angle with the branch pipe 11.
The suction force at all the suction openings 17 provided on the inner surface of the box body can be made equal, making it possible to exhaust air uniformly over the entire length of the booth.

Therefore, there is no need for a damper to be inserted into each branch for the previously used resistance adjustment balancing method.

Regarding other components in the above embodiment, reference numeral 26 is a detachable side plate forming the outer surface of the box 14, and is provided to facilitate cleaning of the inside of the box 14.

Further, FIGS. 5 and 6 show an exhaust booth according to another embodiment of the present invention, in which the floor surface of the painting work space 16 is substantially made into a hollow structure as an extension of the box body in the above embodiment. In addition to using
It is characterized in that any position on the floor surface can be freely set as a suction opening.

In the illustrated embodiment, such a hollow structure is
A pair of partition members 30 connecting both ends to the partition members 4 and 14 are extended at a required parallel interval, and a plurality of plates are placed between them in the width direction of the booth unit to create a decompression space 34 between them. furthermore, some of them are made into fixed plates 31 and other plates are made into movable plates 32, and by moving the movable plates 32, an arbitrary floor can be created between the fixed plate 31 or the movable plate 32. A suction opening 33 is formed at the surface position.

With this configuration, a vertical flow can be reliably formed even when the workpiece on the floor is small. Further, the suction opening 33 can be formed at a position where the exhaust gas suction effect is highest, and the suction efficiency can be increased.

〔Effect of the invention〕

With the configuration and operation described above, the present invention can achieve the following effects.

(1) A legal and rational painting, etc. exhaust booth that complies with organic regulations and dust regulations can be easily constructed by connecting any number of booth units that can be mass-produced at low cost, so it can be manufactured at low cost. .

(2) Furthermore, since each booth unit has an extremely simple structure, installation, removal, and maintenance are easy.

[Brief explanation of drawings]

1 is a perspective view of a first embodiment of a unit assembly type painting booth according to the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a side view of the same, and FIG. 4 is a view taken along the line shown in FIG. 5 is a cross-sectional explanatory diagram of the second embodiment, and FIG.
The figure is a sectional view taken along the line of FIG. In the figure, 1: air filter, 2: edge frame, 3: air filter element, 4, 4a: bracket,
5: Pivot, 6: Bracket, 7: Connecting rod, 8: Filter section, 9: Lighting section, 10: Main duct, 1
1: Branch pipe, 13: Flexible pipe, 14: Box body, 15:
Connection opening, 16: Working space, 17: Suction opening, 1
8: Baffle plate, 19: Guide plate, 21: Fire curtain, 22: Hanging rod, 23: Exhaust fan, 24: Exhaust duct, 26: Side plate, 30: Partition member, 31: Fixed plate, 32: Movable plate, 33: Suction opening, 34: Decompression space, 50: Ceiling main frame, A: Booth unit.

Claims (1)

[Scope of Claims] 1. A main ceiling frame having the same area and shape as the work floor surface that requires ventilation, and from which the fire curtain is suspended from the periphery toward the work floor surface; (a) a ceiling main frame; A main duct of unit length arranged above the center of the frame and having branch pipes on both sides; (b) The upper end is connected to each of the branch pipes, and extends symmetrically in the width direction of the main ceiling frame. a pair of flexible tubes; (c) a box body installed on the floor surface and having a suction opening that opens toward the work space directly below the ceiling main frame and a connecting opening that connects to the lower end of the flexible tube; This unit-assembled type exhaust booth for painting, etc. is constructed by attaching a plurality of exhaust booth units for painting, etc. in the longitudinal direction. 2. Install an air filter having the same area and shape as the work floor surface that requires ventilation, and having unit length and width, on the main ceiling frame from which the fire curtain is suspended from the periphery toward the work floor surface. (b) A main duct of unit length installed above the center of the main ceiling frame and having branch pipes on both sides; (c) A main duct of unit length that is connected to each of the branch pipes at its upper end and connected to the main ceiling frame. A pair of flexible tubes extending symmetrically in the width direction; (d) A suction opening that is installed on the floor and opens toward the work space directly under the main ceiling frame, and a connecting opening that connects to the lower end of the flexible tube. A unit-assembled type exhaust booth for painting, etc., constructed by attaching a plurality of exhaust booth units for painting, etc., in the longitudinal direction, consisting of a box body having .