JPH038385Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement of a push-pull type painting booth used when painting automobiles and the like.

Painting booths are installed to carry out painting work indoors, isolated from the outside air, and do not adversely affect the health of the painting workers, especially since organic solvents that are harmful to health are used during painting work. It is necessary to take this into account.

The conventional painting booth 30 has an air supply chamber 31 arranged along the ceiling as shown in FIG. Air is flowed from the ceiling to the floor 33 as shown by the arrow from the air supply filter 35 installed at the bottom of the chamber 31, and the air is flowed along with the outside air to prevent the workers from coming into contact with the paint made of organic solvents that scatters during the painting process as much as possible. It is introduced into an exhaust duct 34 that is excavated under the floor so as to be guided outdoors from the floor surface 33. The paint is removed by a filter provided in the exhaust duct 34. However, such conventional painting booths3
0, the flow path of the air flowing inside the air supply chamber 31 is long, so the air resistance is large, and there is a considerable difference in the amount of circulating air depending on the position of the air supply filter 35. The disadvantages were that the capacity increased and the cost of the motor and power consumption became high.

This invention was made in order to eliminate such drawbacks of the conventional technology.

An embodiment of this invention will be described based on the drawings.

The painting booth has a shape in which a plurality of gate-shaped units 1 are connected, and outer panels such as iron plates and slate plates are attached to the roof 2 and side walls 3, respectively.
The painting booth is erected on the floor 4 and is large enough to accommodate automobiles and the like. Further, a horizontal push fan 6 for pushing air is attached to one end of the ceiling 5 of each gate type unit 1, and a suction duct 7 is connected to the ceiling 5 along the side wall 3 on the inflow side of the push fan 6. An air supply duct 20 is provided along the entire lower surface of the ceiling part 5 on the outflow side of the push fan 6. An air supply filter 21 is arranged on the lower surface of the air supply duct 20, and a baffle plate 22 is further arranged inside the air supply duct 20. A main suction port 8 with a wide opening area is provided at the lower end of the suction duct 7, and a plate-shaped main suction filter 9 with a large area is attached to the main suction port 8, and the back of the push fan 6 at the upper end of the suction duct 7 An auxiliary suction port 10 with a narrow opening area is provided in the auxiliary suction port 10, and an auxiliary suction filter 11 with a narrow opening area is also provided in this port.

Reference numeral 12 denotes an exhaust duct, which is installed in each gate-shaped unit (1) by excavating underground from the floor 4 and leading to the outdoors, and a chimney-shaped exhaust duct made of iron plate is connected to the outdoor ground. A duct 12a is provided upright for each gate-shaped unit 1. Exhaust duct 12a
A plate-shaped exhaust filter 13 and a pull fan 14 for discharging exhaust gas outdoors are provided in the middle of each of the exhaust filters.

Numeral 15 is a shower room, 16 is a drainage pit, and 17 is an entrance, which are provided at the front and rear ends of the painting booth and can be opened and closed by electric shutters, and are used for loading and unloading automobiles. 1
8 is the door.

Automobile painting is done at the front and rear entrances and exits of the paint booth.
This is done by closing the push fan 6 and rotating the pull fan 14. At that time, outside air is sucked in as shown by the arrow through the main suction filter 9 and the auxiliary suction filter 11, and is guided to the air guide plate 22 through the air supply duct 20 formed for each gate-shaped unit 1, and from the air supply filter 21 into the internal space. 19, causing airflow to flow in four directions on the floor surface. Dust contained in the outside air is removed by the main suction filter 9 and the auxiliary suction filter 11, so dust and small insects do not adhere to the painted surface, and the airflow always flows from top to bottom. Therefore, it is less likely that the scattered paint will stick to the worker or be inhaled into the mouth, thereby preventing the harmful effects on health caused by organic solvents. Further, the paint in the air discharged through the exhaust duct 12 is passed through the exhaust filter 13.
It is removed by water and is hardly emitted into the atmosphere.

Furthermore, since the main suction port 8 is provided at a position approximately at the height of a person, the main suction filter 9 can be easily replaced.

Furthermore, the small auxiliary suction port 10 provided at the back of the push fan 6 can significantly reduce the noise generated at the main suction port 8 during suction. This has been confirmed experimentally.

As described above, the push-pull type painting booth according to the present invention has a shape in which a plurality of gate-shaped units 1 are arranged in series, and a horizontal push-pull is installed at one end of the ceiling 5 of each gate-shaped unit 1. In addition to providing a fan 6, a pull fan 14 is provided in the exhaust duct 12a leading from the floor surface 4 to the outdoors for each gate-type unit 1, and a pull fan 14 is provided in the exhaust duct 12a leading from the floor surface 4 to the outdoors. A suction duct 7 is formed on the suction side of the push fan 6 and is lowered from the ceiling 5 to a position relatively close to the floor 4 along the side wall 3 of the gate-shaped unit 1, forming an air flow path flowing in four directions on the floor. A main suction port 8 having a large area main suction filter 9 is provided at the lower end of the suction duct 7, and an auxiliary suction filter 11 having a narrow area is provided at a high position near the push fan 6 of the suction duct 7. An auxiliary suction port 10 is provided.

According to this invention, each of the plurality of gate-shaped units 1 is provided with a push fan 6, which reduces the amount of air flowing out from the supply air filter compared to when a single push fan is provided in a conventional painting booth. Achieves uniform wind speed with less unevenness,
There is no need to feed extra air, and since the air supply flow path is short, the pressure drop in each push fan 6 is extremely small, so the capacity of the motor for all push fans 6 is about half that of conventional models, which reduces power consumption. Moreover, even if the number of electric motors purchased is large, the total cost is less than that of the conventional method, which is excellent in economical efficiency.

In addition, since the painting booth consists of a series of gate-type units 1, the number of gate-type units 1, ..., 1 used can be increased or decreased depending on the length of the car to be painted, and the gate-type units that do not face the car are unit push button
The fan 6 and pull fan 14 can be shut down to reduce power consumption.

Furthermore, the small auxiliary suction port 10 provided behind the push fan 6 can significantly reduce the noise generated at the main suction port 8 during suction.

Although the above embodiment has been described with reference to a push-pull type paint booth for automobiles, it goes without saying that the present invention can also be used in push-pull type paint booths other than automobiles.

[Brief explanation of the drawing]

Figures 1 and 2 show pushbuttons related to this invention.
This is for explaining one embodiment of a pull-type painting booth, in which FIG. 1 is an overall side view and FIG. 2 is a front view of FIG. 1. FIG. 3 is a vertical cutaway side view of a conventional paint booth. 1... Gate type unit, 2... Roof, 3... Side wall, 4... Floor, 5... Ceiling, 6... Push fan, 7... Suction duct, 8... Main intake port, 9 ... Main suction filter, 10 ... Auxiliary suction port, 11 ... Auxiliary suction filter, 12 ... Exhaust duct, 12a ... Exhaust duct, 13 ... Exhaust filter, 14 ... Pull fan, 15 ... Shower room , 16...Drain pit, 17...Entrance/exit, 18...Door, 19...Internal space, 20
... Air supply duct, 21 ... Air supply filter, 22
...Air guide plate, 30...Painting booth, 31...Air supply room, 32...Push fan, 33...Floor surface,
34...exhaust duct, 35...air supply filter.

Claims (1)

[Scope of utility model registration request] A painting booth is configured with a plurality of gate-shaped units connected in series, and each gate-shaped unit is provided with a horizontal push fan at one end of the ceiling, and each gate-shaped unit is connected to the outdoors from its floor surface. A pull fan is installed in the exhaust duct to form an air flow path flowing from the ceiling toward the floor in the internal space formed for each gate-type unit, and the suction duct is installed on the suction side of the push fan. The suction duct is lowered from the ceiling to a position relatively close to the floor along the side wall, and a main suction port with a large area main suction filter is provided at the lower end of the suction duct. A push-pull type paint booth with an auxiliary suction port with a small area auxiliary suction filter located at a high position.