JPH1099749A - Coating booth - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the receipt of power in an arbitrary place in a coating booth without using a long power code. SOLUTION: Since feed parts 20 in which an insulation coated conductor 22 to be a primary circuit of electromagnetic induction are formed continuously or at prescribed intervals along the longitudinal direction in an air supply chamber 2, in a coating chamber 3, an an air purifying chamber 5, an air intake duct 10 or in an exhaust duct 7, in a state in which high frequency electric current is caused to flow in the insulation covered conductor 22, pickup coils 31 connected to electric equipment 30 are arranged opposite to the feed parts 20, thereby producing induction electromotive force in the pickup coils 31 each which become a secondary circuit of electromagnetic induction. Therefore, since the electric equipment 30 is used taking the electromotive force as a power source, in the case of the inside of the coating booth 1 being cleaned, it is unnecessary that a long power code is drawn around from a receptacle installed outside the coating booth 1 to feed power.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a painting booth for performing painting while purifying and exhausting contaminated air containing paint mist generated in a painting room.

[0002]

2. Description of the Related Art As a painting booth used for painting an automobile body, etc., a conditioned air flowing down from an air supply chamber formed in a ceiling portion into a painting room and contaminated air mixed with paint mist in the painting room are painted. A paint booth with an air supply that sucks into the air purification chamber formed under the floor, makes paint and liquid contact with the venturi section formed in the air purification chamber, removes paint mist, and then discharges purified air to the outside is often used. Have been. And, for example, a gap at the center portion where the ends of the flow plates that face each other from the pair of left and right overflow tanks arranged under the floor of the coating room are formed in the venturi portion, and the flow plate overflows from each overflow tank When the water flowing down flows down through the venturi section, it becomes droplets and catches paint mist, and droplets containing this paint mist soar up and adhere to the inner wall, so the inner wall of the air purification chamber is Large amounts of paint components removed from contaminated air adhere. Therefore, on a weekend or the like when the painting booth is not operated, the cleaning operation of the air purification chamber is performed before the dirt becomes too severe.

[0003] In this case, even if lighting equipment is installed inside the air purifying chamber, a large amount of paint components adhere to the inner wall of the air purifying chamber as described above. There is no internal lighting, and it is a dark tunnel where light leaks through a slight gap between the overflow tanks on the left and right over a hundred and several hundred meters. For this reason, when cleaning the inside, headlights were attached to the helmet of each worker, or a separate lighting device was brought in for lighting.

[0004]

However, even when headlights are mounted on the helmet of the worker, the range of illumination is narrow, so that the entire area of the air purification chamber must be brightly illuminated so that it can be seen over a wide range. Therefore, there was a problem that workability was poor. Of course, if the lighting device is brought into the air purification room and illuminated, it can be made bright over a wide range. However, since an electrical outlet cannot be installed in the air purification chamber due to high humidity, it is necessary to supply power to the lighting device in the air purification chamber via a very long power cord connected to the electrical outlet provided outside the furnace. However, there was a problem that the handling of the power cord was troublesome.

[0005] These problems are not limited to the case where the lighting device is used in the air purifying room, but also the case where electric equipment such as an electric floor brush is used in the air purifying room, the air supply room, and the painting room. It is. In other words, lighting equipment is installed in the coating room and air supply room, but these lighting equipment is a special thing that has been subjected to explosion-proof measures, and the contact electrode part is exposed to air like an electric outlet. Cannot be installed on explosion proof. Therefore, when an electric device such as an electric floor brush is used in a painting room or an air supply room at an arbitrary place in the painting room or the air supply room, there is a problem that the power supply cords are also troublesome.

Accordingly, it is a technical object of the present invention to enable power to be supplied to an arbitrary location in a coating booth without using a long power cord.

[0007]

SUMMARY OF THE INVENTION To solve this problem, the present invention is directed to an air-conditioning air flowing down from a supply chamber formed on a ceiling into a coating chamber, and contaminated air containing paint mist is removed from the coating chamber. From a supply booth, a coating room, and an air purification chamber, which sucks the paint mist into the air purification chamber formed below or on the side of the floor to separate and remove the paint mist, and then discharges the purified air to the outside. At least one of a room, an air supply duct for supplying conditioned air to the air supply chamber, and an exhaust duct for exhausting clean air from the air purification chamber is provided with a secondary electromagnetic induction connected to an electric device. A power supply unit facing a pickup coil to be a circuit is formed continuously or at a predetermined interval along the longitudinal direction of each chamber or each duct, and a primary circuit of electromagnetic induction is provided in the power supply unit. Characterized by comprising the sheathed wires is provided.

According to the present invention, the power supply unit provided with the insulated wire serving as the primary circuit of the electromagnetic induction is provided in the air supply room, the coating room, the air purification room, the air supply duct, or the exhaust duct. Are formed continuously or at predetermined intervals along a line, so that a pickup coil connected to an electric device such as a lighting device is arranged to face a power supply unit in a state where a high-frequency current is applied to the insulated wire. For example, an induced electromotive force is generated in a pickup coil serving as a secondary circuit of electromagnetic induction. Therefore, this electromotive force can be used as a power source to turn on the lighting device or use other electric devices.For example, when cleaning the air purification chamber on a weekend when the operation of the painting booth is suspended. In addition, there is no need to route a long power cord from an electrical outlet installed outside the painting booth to supply power. In addition, since power can be received at any place in the air supply room, there is no need to install expensive lighting equipment with explosion proof measures in the air supply room that uses the lighting device only for cleaning and maintenance. Equipment costs can be reduced accordingly.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a front sectional view showing an example of a coating booth according to the present invention, FIG. 2 is a view of a power supply section viewed from the inside of the coating booth, and FIGS.
FIG. 4 is a plan view of an inner wall portion of a painting booth showing another example of a power supply unit, and FIG. 5 is a front sectional view of an inner wall portion of a painting booth showing still another example of a power supply unit. FIG.

The coating booth 1 according to the present embodiment causes conditioned air to flow down from an air supply chamber 2 formed in a ceiling into a coating chamber 3, and paints a workpiece W from a coating machine 4 installed in the coating chamber 3. And the contaminated air mixed with the oversprayed paint mist is sucked into an air purification chamber 5 formed under the floor of the coating chamber 3 and brought into gas-liquid contact by a venturi section 6 formed in the air purification chamber 5. After removing the paint mist, the purified air is discharged from the exhaust duct 7 to the outside.

In the air supply chamber 2, an upper half is formed as a dynamic pressure chamber 2 A and a lower half is formed as a static pressure chamber 2 B with a flow straightening plate 8 interposed therebetween. An air supply duct 10 for supplying conditioned air with humidity is connected, and a filter 11 is interposed between the static pressure chamber 2B and the coating chamber 3 thereunder. Thereby, the conditioned air sent from the air conditioner 9 flows from the dynamic pressure chamber 2A through the rectifying plate 8 into the static pressure chamber 2B, and from the static pressure chamber 2B, passes through the filter 11 and enters the coating chamber 3 uniformly. Flowed down.

The air purification chamber 5 is formed below the grating 12 which is the floor of the coating chamber 3 and is connected to the left and right overflow tanks 13R and 13L.
A gap is formed in the venturi section 6 at the center where the ends of the 4R and 14L face each other, and the water purifying chamber 5 further stores water flowing down from the venturi section 6 temporarily. Exhaust chamber 1 having tank 15
6 is formed, and the exhaust duct 7 is connected to the exhaust chamber 16. Reference numeral 17 denotes a guide plate that guides water flowing down from the venturi section 6 to the storage tank 15 and drains water droplets contained in the exhaust gas.

The dynamic pressure chamber 2 A, the static pressure chamber 2 B, the coating chamber 3, the air purification chamber 5, the exhaust duct 7 and the inner wall 1 a of the air supply duct 10 of the air supply chamber 2 are provided along the longitudinal direction thereof. A power supply unit 20 is formed. FIG. 2 is a view of the power supply section viewed from the inside of the painting booth, and FIGS. 3A and 3B are A-
FIG. 3 is a cross-sectional view taken along line A and line BB. A power supply unit 20 includes a rail body 21 laid in the longitudinal direction of the coating booth 1 and a continuous insulating coated electric wire 22 serving as a primary circuit of electromagnetic induction. 23, and the insulating coated electric wire 22
Is connected to a high-frequency current supply device (not shown) provided outside the coating booth 1 so that a high-frequency current of, for example, about 300 V and about 10 kHz is supplied. The rail body 21 has a detachable portion 24a formed thin to attach and detach the pickup coil 31 of the lighting device (electric device) 30 to and from the rail body 21 (see FIG. 4A).
, A pickup coil 31 and each of the insulated wires 2
Thick opposing disposition part 2 that opposes the second and second power supply states.
4b (see FIG. 4 (b)) are formed at predetermined intervals, and the illumination device 30 mounted on the rail body 21 is slid to the power supply unit 20 in the longitudinal direction of the rail body 21 by the attachment / detachment portion 24a, thereby the rail body. Tapered surface 2 formed on 21
4c, the pickup coil 31 is connected to each of the electric wires 2
2,22.

A lighting device (electric device) 30 used in the painting booth 1 is connected to a power supply device 32 to which a pickup coil 31 serving as a secondary circuit for electromagnetic induction is connected, and charges power output from the power supply device 32. A rechargeable battery 33 and an illumination lamp 34 that is turned on by a power supply supplied through the rechargeable battery 33 are integrally attached to a base 35.

The pickup coil 31
Is formed by solidifying a coil winding with an insulating resin, and is formed with two engaging concave portions 31a and 31b so as to fit with the insulated wires 22 and 22. In the engaged state, the insulated wire 22 is fitted into the engaging recesses 31a and 31b, and both are electrically opposed to each other in a non-contact state. The power supply device 32 adjusts the induced electromotive force generated in the pickup coil 31 to a predetermined voltage and a predetermined current when a high-frequency current is supplied to the power supply unit 20 in a state where the power supply unit 20 and the pickup coil 31 are engaged. And output.

The above is an example of the configuration of the present invention, and its operation will be described below. The interior of the painting booth 1 is cleaned on a weekend or the like when the operation is not performed. For example, when cleaning the inside of the air purification chamber 5, first, a high-frequency current is supplied to the insulated wire 22 of the power supply unit 20. Then, the user enters the air purification chamber 5 with the lighting device 30. At this time, the rechargeable battery 33 of the illuminating device 30 is charged in advance, and the illuminating lamp 34 is first turned on by the electric power and brought to a predetermined washing position.

Next, at a predetermined cleaning position, the lighting device 3
When the pickup coil 31 of No. 0 is opposed to the power supply section 20, a high-frequency current flows through the insulated wire 22, so that the pickup coil 3 serving as a secondary circuit of electromagnetic induction
1, the rechargeable battery 33 is charged by the power output from the power supply device 32, and the rechargeable battery 3
3 supplies power to the illumination lamp 34 and the illumination lamp 3
4 is continuously lit.

Therefore, power can be supplied from the power supply unit 20 without turning around a long power cord from outside the booth 1, and the lighting device 30 can be turned on in the drying furnace 1, and the inside of the air purification chamber 5 can be illuminated brightly. The cleaning operation can be performed in a state in which the cleaning is performed. At this time, the pickup coil 31
Since the insulated wire 22 is provided in the power supply unit 20 for generating an induced electromotive force, there is no risk of electric shock or short-circuit due to water being touched by the operator during the cleaning operation. Since the power can be reliably supplied even if some dents adhere to the surface, there is no possibility that power cannot be supplied due to these during cleaning.

The rechargeable battery 33 is continuously charged while the pickup coil 31 is disposed to face the power supply unit 20. Therefore, when the illumination device 30 moves along with the movement of the washing position, the pickup coil 31 Even if the power supply unit 31 is temporarily disconnected from the power supply unit 20, power is supplied from the rechargeable battery 33 to the illumination lamp 34.
The inside of the air purification chamber 5 does not become completely dark when moving. In this way, when cleaning while moving sequentially from one end to the other end of the coating booth 1, without drawing a long power cord, at any place of the coating booth over a hundred and several tens of meters, The lighting device 30 and other electric devices can be used.

The dynamic pressure chamber 2 A and the static pressure chamber 2 of the air supply chamber 2
B, coating room 3, exhaust duct 7, air supply duct 1
When cleaning inside 0, when using lighting device 30, electric floor brush, or other electric equipment in each room 2A, 2B, 3 or duct 7, 10, it is connected to lighting device 30 or other electric equipment. What is necessary is just to make the picked-up coil 31 engaged with each feed part 20. In this case, in particular, the air supply chamber 2 uses the illumination device only for cleaning or maintenance, and in this example, power can be supplied to the illumination device 30 from the power supply unit 20 formed in the air supply chamber 2. Since it is possible to bring in the lighting device 30 each time, it is not necessary to integrally install an expensive lighting device provided with explosion-proof measures in the air supply chamber 2, and the equipment cost can be reduced accordingly.

In addition, electric devices such as the lighting device 30 include:
It is not always necessary to provide the power supply device 32 and the rechargeable battery 33. For example, the illumination lamp 34 may be directly turned on by the induced electromotive force generated in the pickup coil 31. Furthermore, although the case where the pickup coil 31 is integrally attached to the base 35 as the lighting device 30 has been described, the case where the pickup coil 31 is provided at the end of a power cord having a required length like an electric plug may be used. In this case, it is sufficient that the power cord is extremely short enough to reach each power supply unit 20. And the power supply unit 20
The present invention is not limited to the case where the insulated wires 22 are continuously laid along the longitudinal direction of the coating booth 1, but may be a case where they are formed at predetermined intervals. For example, as shown in the plan view of the inner wall portion of the coating booth in FIG. 4, concave portions 35 for mounting the pickup coils 17 on the inner wall 1 a of the coating booth 1 are formed at predetermined intervals along the longitudinal direction in the coating booth 1. ,
An insulated wire 36 serving as a primary circuit of electromagnetic induction may be provided in the recess 35, or a primary coil of electromagnetic induction may be formed in the recess 35 although not shown. Further, as shown in the front cross-sectional view of the inner wall portion of the coating booth in FIG. 5, a support rail 38 laid on the inner wall 1a of the coating booth 1 along the longitudinal direction thereof supports an insulated wire 37. An engaging groove 41 is formed at the upper end surface of the frame 38 for engaging and disengaging a hook 40 formed at an upper end of a frame 39 supporting the pickup coil 31, so that the power supply unit 20 can be extended in the longitudinal direction of the painting booth 1. It may be formed continuously along the direction.

Further, as the painting booth 1, the painting booth with the air supply provided with the air supply chamber 2 in the ceiling portion has been described as an example. However, the present invention does not provide the air supply chamber 2 but simply paints through a filter. A coating booth in which outside air is introduced into the chamber 3 and a coating booth in which the air purification chamber 5 is juxtaposed beside the coating chamber 3 can also be applied.

[0023]

As described above, according to the present invention, power can be supplied at an arbitrary position by the power supply unit formed in the painting booth without using a long power supply cord. Since the insulated wire is provided, there is provided a very excellent effect that the power supply section is not short-circuited by water and the power supply cannot be disabled even if some paint components adhere.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing an example of a coating booth according to the present invention.

FIG. 2 is a diagram of a power supply unit viewed from inside a painting booth.

3A and 3B are a sectional view taken along line AA and a sectional view taken along line BB of FIG. 2;

FIG. 4 is a plan view of an inner wall portion of a painting booth showing another example of a power supply unit.

FIG. 5 is a front sectional view of an inner wall portion of a coating booth showing still another example of the power supply unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Painting booth 2 ... Air supply room 3 ... Painting room 4 ... Painting machine 5 ... Air purification room 6 ... Venturi part 7 ... Exhaust duct 10 ... Air supply Supply duct 20 Power supply unit 22 Insulated wire 30 Lighting device (electric equipment) 31 Pickup coil

Claims (2)

[Claims] An air-conditioning air flows from an air supply chamber (2) formed in a ceiling into a coating room (3), and contaminated air containing paint mist is discharged from the coating room (3) under the floor or laterally. In a coating booth adapted to suction and separate and remove paint mist into an air purification chamber (5) formed in the air supply chamber (5), the inside of the air supply chamber (2), the coating chamber (3) ), An air purification chamber (5), an air supply duct (10) for supplying conditioned air to the air supply chamber (2), or an exhaust duct for exhausting clean air from the air purification chamber (5). 7) At least one of the chambers includes a power supply unit (20) facing a pickup coil (31) serving as a secondary circuit of electromagnetic induction connected to the electric device (30). 5) or continuously or at predetermined intervals along the longitudinal direction of the respective ducts (7, 10). A coating booth, characterized in that the power supply section (20) is provided with an insulated wire (21) serving as a primary circuit of electromagnetic induction. 2. A contaminated air containing a paint mist is sucked from a paint chamber (3) into an air purification chamber (5) formed under or on the floor thereof to separate and remove the paint mist. A coating booth adapted to discharge air to at least one of the coating chamber (3), the air purification chamber (5) or the exhaust duct (7) for discharging clean air from the air purification chamber (5). Is a pickup coil that is a secondary circuit of electromagnetic induction connected to electrical equipment (30)
The feeder (20) facing (31) is connected to each room (3, 5).
Alternatively, the ducts (10) are formed continuously or at predetermined intervals along the longitudinal direction, and the feeder (20) is provided with an insulated wire (21) serving as a primary circuit of electromagnetic induction. A painting booth characterized by: