JPH11309397A - Air cleaner for inside of coating booth - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air cleaner by which the environment in the inside of a coating booth is improved. SOLUTION: A water filter is used in combination with a fibrous filter 2 for a clean room. Many spray nozzles 5 are arranged in the upper part of the obliquely arranged fibrous filter 2. Spray water atomized in an umbrella shape is made vortical by high-speed air flow sucked into the fibrous filter 2 and is uniformly diffused. A regulation cover 3 is freely closably arranged in the rear part of the obliquely arranged fibrous filter 2. An air-cleaning chamber 1 holding the above filter or the like is joined to a coating booth through a fan. Thereby, not only fine particles in air but also volatile harmful substance are completely removed by adsorption of the water filter and the fibrous filter. Working environment and coating quality in the inside of the coating booth are improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifying apparatus for a coating booth used when a vehicle is coated with sheet metal. Work to improve the health of workers in the painting booth and improve painting quality.

[0002]

2. Description of the Related Art Volatile organic solvents (VO) which are solvents for paints
To protect workers from C), applicants have placed forced air exhaust at the bottom of the painting booth to prevent air pollution in the booth. This forced air discharging means (Japanese Patent Application No. Hei 7-2)
In paint booths not equipped with No. 87813), water-based paints are used dare to reduce the paint quality.

[0003]

The air introduced into the painting booth is unexpectedly contaminated. The adhesion of the fine particles to the painted surface lowers the coating quality. On dry days, static electricity is likely to be generated. A painting booth where static electricity is unlikely to occur and particles are hardly suspended is ideal. The present invention has been devised in response to this request, and will be described in detail below with reference to the drawings.

[0004]

SUMMARY OF THE INVENTION In an automobile painting booth that discharges contaminated air in a painting booth into the atmosphere from a purification passage arranged on a floor surface, an air purification system comprising a fiber filter and a plurality of spray nozzles in front of a fan. A chamber is arranged, and the fiber filter is arranged diagonally to clean the fiber filter with spray water.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A fiber filter 2 for a clean room is disposed obliquely in an air purification chamber 1, and an adjustable cover 3 which can be opened and closed is disposed behind the filter. A duct 4 extending from the air purification chamber 1 is connected to a fan 10. A large number of spray nozzles 5 are arranged at equal intervals above the entrance of the air purification chamber 1.
An attachment is attached to the tip of the spray nozzle 5 so as to be sprayed in an umbrella shape. In order to circulate the spray water collected at the bottom of the air purification chamber 1 to the spray nozzle 5 again, the submersible pump 8
And the communication pipe 9. Reference numeral 7 denotes a spray water receiver, 11 denotes a painting booth, and 12 denotes an underfloor air discharge path 12. The fiber filter 2 is a fiber filter widely used in a clean room, and is disposed obliquely as shown in FIG. 1 so as to be purified by spray water from a spray nozzle 5. The adjustment cover 3 has a fulcrum at an upper portion and a central portion.

Next, the operation will be described. Fresh air sucked from the air purification chamber 1 by the fan 10 is supplied into the painting booth 11 through the duct 4,
2 to the outside. The spray water discharged from the spray nozzle 5 spreads like an umbrella and adsorbs and removes fine particles such as dust. At the same time, the surface of the fiber filter 2 arranged obliquely is cleaned. Painting booth 1 depending on the degree of opening and closing of the adjustment cover 3
1. Adjust the air supply amount. The spray water changes into a vortex due to the high-speed air flow, which further functions as a water filter. The water collected at the bottom 6 of the air purification chamber 1 is returned by the submersible pump. Thus, fresh air is always supplied to the operator in the coating booth 1 by the synergistic effect of the water filter and the fiber filter. Room temperature 13.0 ℃, humidity 49%
The concentrations of methyl ethyl ketone, isobutyl acetate, toluene, butyl acetate and xylene were measured under the conditions of
Both were below 1.0 ppm.

In the underfloor air discharge path 12, an air purifying device including the fiber filter 2 and the spray nozzle 5 is arranged. In this case, the coating booth device will fully conform to the air pollution standards.

[0008] In short, the present invention provides a fiber filter 2 for a clean room to send fresh air into a painting booth.
And a number of spray nozzles 5 arranged in the upper front part thereof,
A pump 8 for circulating water collected at the bottom of the air purifying chamber 1 to the spray nozzle 5 and an adjusting cover 3 at the rear of the fiber filter 2 for adjusting the amount of inflow air constitute an air purifying device. The working environment in the painting booth is greatly improved, and the painting quality is improved by eliminating static electricity and fine particles.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view of an air purification chamber.

FIG. 2 is an explanatory diagram when an air purification chamber is connected to a painting booth.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air purification room 2 Fiber filter 3 Adjustment cover 5 Spray nozzle 10 Fan 11 Painting booth 12 Underfloor air discharge path

Claims (3)

[Claims] 1. To send fresh air into a painting booth,
A fiber filter 2 for a clean room, a large number of spray nozzles 5 arranged on the front upper part thereof, and a pump 8 for circulating water collected at the bottom of the air purification chamber 1 to the spray nozzles 5.
And an adjusting cover 3 at the rear of the fiber filter 2 for adjusting the amount of inflowing air. 2. In an automobile painting booth in which contaminated air in the coating boo coating is discharged into the atmosphere from an underfloor air discharge path 12 arranged on the floor, a fiber filter 2 is provided in front of the fan 10.
And an air purification chamber 1 comprising a plurality of spray nozzles 5,
An air purification device in a painting booth, wherein the fiber filter 2 is disposed obliquely to clean the fiber filter 2 with spray water. 3. An air purifier in a coating booth according to claim 2, wherein spray water is sprayed from each spray nozzle in an umbrella shape so as to lay a water curtain in front of the fiber filter.