JP6194843B2 - Painting booth equipment - Google Patents

Description

  The present invention relates to a painting booth apparatus used for painting products.

When painting a product such as an automobile body, a painting booth apparatus having a painting chamber is used, the product is placed in the painting chamber (painting booth), and spray paint is sprayed on the product. When this coating is performed, air whose temperature and humidity are adjusted is supplied from an air conditioner installed outside the coating booth device into the coating chamber. In addition, the spray-like paint mist remaining after the product is painted in the painting room is collected in water and collected.
For example, in the paint spraying chamber of Patent Document 1, air is allowed to flow into the painting chamber by the blowing means, and the air inflow speed from the blowing means to the painting chamber is adjusted to control excessive spraying of the paint generated during the painting process. It is described. Further, in the circulation type painting booth device for automobiles of Patent Document 2, it is described that a circulation fan that blows air downward in the painting booth is provided in the suction chamber at the front part of the painting booth.

JP-A-6-79207 JP 2002-336749 A

  However, in a conventional painting booth device, an air supply fan for supplying air to the painting booth is disposed outside the painting booth device as in Patent Document 1 or the like, or painted as in Patent Document 2 or the like. It is arranged adjacent to the booth device in the lateral direction. Therefore, there exists a problem that the installation of the whole painting booth apparatus including an air supply fan will enlarge. There is also a problem that the distance from the supply fan to the painting booth becomes long.

  The present invention has been made in view of such a background, and has been obtained in an attempt to provide a painting booth apparatus that can reduce the distance from the supply fan to the painting chamber and reduce the size of the apparatus. .

One aspect of the present invention is a painting chamber in which a product is painted,
Provided above the coating chamber, and the air supply chamber provided upper air supply path and the lower air supply path for supplying air to said paint chamber adjacent to the vertical,
Provided on at least one of said upper air supply path and the lower air supply path, and the temperature and humidity adjusting means for performing the temperature and adjust the humidity of the air supplied to the painting chamber,
An air supply fan that is disposed in the lower intake path and rotates about the vertical axis of rotation to suck air from the upper surface and discharge the sucked air from the side surface ;
Air in the upper air supply path passes in the horizontal direction and is sucked into the upper surface of the air supply fan, and air discharged from the side surface of the air supply fan passes in the lower air supply path in the horizontal direction. In the painting booth device, the painting booth device is configured to be guided from both sides of the lower air supply path to the painting chamber .

  In the painting booth apparatus, an air supply chamber in which an air supply fan is disposed is provided above the painting chamber, and temperature / humidity adjusting means is provided in the air supply chamber or the painting chamber. With this configuration, the painting booth apparatus can be provided with a function of supplying air whose temperature and humidity are adjusted to the supply chamber in one apparatus.

In addition, the air supply fan disposed in the air supply chamber rotates around the rotation axis in the vertical direction and sucks air from the top surface and discharges the sucked air from the side surface. Thereby, an air supply chamber having a small vertical height can be formed above the coating chamber.
Moreover, since the air supply chamber in which the air supply fan is disposed is provided above the painting chamber, the distance from the air supply fan to the painting chamber can be shortened as much as possible. The air supply fan is not disposed outside the painting booth apparatus, and is not disposed adjacent to the painting booth apparatus in the lateral direction.

  Therefore, according to the painting booth apparatus, the distance from the supply fan to the painting chamber can be reduced, and the apparatus can be downsized.

Cross-sectional explanatory drawing shown in the state which looked at the coating booth apparatus concerning the Example from the front. Explanatory drawing which shows the state which looked at the coating booth apparatus concerning the Example from the upper surface. Cross-sectional explanatory drawing which shows the state which looked at the coating booth apparatus connected to multiple according to an Example from the side. Cross-sectional explanatory drawing which expands and shows the periphery of the air supply chamber in the coating booth apparatus of FIG. 1 concerning an Example. Cross-sectional explanatory drawing which expands and shows the periphery of the collection | recovery exhaust chamber in the coating booth apparatus of FIG. 1 concerning an Example. The graph which shows typically the operation | movement on the wet air diagram in the case of adjusting the temperature and humidity of air concerning an Example (a) about winter and (b) about summer.

A preferred embodiment of the above-described coating booth apparatus will be described.
In the painting booth apparatus, an upper air supply path for guiding air to the upper surface of the air supply fan and air discharged from the side surface of the air supply fan are introduced into the air supply chamber. is provided with a lower air supply path, the temperature and humidity adjusting means that is arranged on at least one of said upper air supply path and the lower air supply path.

  In this case, the upper air supply path and the lower air supply path are provided in the air supply chamber, and the temperature / humidity adjusting means is disposed in at least one of them, so that the temperature / humidity adjusting means and the air supply path are arranged. Fans can be placed in a small space. Then, the temperature and humidity of the air supplied to the painting chamber can be adjusted in a small space, and the painting booth apparatus can be further miniaturized.

The painting booth device is provided below the painting chamber, and collects spray-like paint mist remaining after the product is painted in the painting chamber and collects air from the painting chamber. An exhaust chamber may be further provided.
In this case, the painting booth apparatus can be equipped with functions of supplying and exhausting air, adjusting temperature and humidity, and collecting paint mist in one apparatus.

The recovery exhaust chamber is provided with a cyclone container that forms a swirling flow to suck the paint mist and separates the paint mist into liquid or solid paint residue and air. The central axis line may be oriented in a substantially horizontal direction or a direction inclined with respect to the horizontal direction.
In this case, a recovery exhaust chamber having a small vertical height can be formed below the coating chamber by using a cyclone container oriented in a substantially horizontal or inclined direction. Thereby, the further miniaturization of the painting booth device can be achieved.
The swirl flow of the paint mist formed in the cyclone container refers to a flow in which the paint mist flows in the direction of the central axis while forming a vortex around the central axis of the cyclone container.

  The substantially horizontal direction includes not only a state where the center axis of the cyclone container is oriented in the horizontal direction but also a state where the center axis of the cyclone container is slightly inclined from the horizontal direction. In addition, the state where the center axis of the cyclone container is directed in a direction inclined with respect to the horizontal direction means that the center axis of the cyclone container is lowered in the flow direction of the paint mist at an angle within 45 degrees with respect to the horizontal direction. It means the state of being inclined.

Further, the air exhausted from the recovery exhaust chamber may be configured to be sucked again into the air supply fan in the air supply chamber.
In this case, the air once adjusted for temperature and humidity is circulated to the supply chamber, the coating chamber, and the recovery exhaust chamber. Therefore, the temperature and humidity of the air supplied to the painting chamber can be adjusted efficiently.

Moreover, the said coating booth apparatus has a unit structure which can be connected to a horizontal direction, and when a plurality of said coating booth apparatuses are connected, a plurality of the above-mentioned coating chambers are communicated to allow the product to pass therethrough. You may be comprised so that a communication painting chamber may be formed.
In this case, a communication paint chamber having a required length can be easily formed by connecting a plurality of paint booth apparatuses having a unit structure. Thereby, the required coating line can be formed according to the length of the object to be coated using the painting booth device.

Below, the Example concerning a painting booth apparatus is described with reference to drawings.
As shown in FIG. 1, the painting booth apparatus 1 of this example includes a painting chamber 2, an air supply chamber 3, a recovery exhaust chamber 6, and temperature / humidity adjusting means 5. The painting room 2 is formed as a room where spray painting is performed on the automobile body 7 as a product. The air supply chamber 3 is provided above the painting chamber 2 and is formed for sucking air A from the outside and supplying the air A to the painting chamber 2. The recovery exhaust chamber 6 is provided below the painting chamber 2, collects the spray-like paint mist M remaining after the automobile body 7 is painted in the painting chamber 2, and moves from the inside of the painting chamber 2 to the outside. The air A is exhausted. The temperature / humidity adjusting means 5 is provided in the air supply chamber 3 and is configured to adjust the temperature and humidity of the air A supplied to the painting chamber 2. As shown in FIGS. 2 and 4, the air supply chamber 3 rotates around the rotation axis O in the vertical direction and sucks air A from the upper surface 41 and discharges the sucked air A from the side surface 42. Is arranged.

Below, the coating booth apparatus 1 of this example is explained in detail with reference to FIGS.
As shown in FIGS. 1 and 3, the painting booth apparatus 1 of this example is used for painting an automobile body 7. The painting booth apparatus 1 has a unit structure that can be connected in the lateral direction. The painting booth apparatus 1 serves as a painting facility in a painting line that performs spray painting on the automobile body 7 by connecting a plurality of painting booth apparatuses 1 in the lateral direction. When a plurality of painting booth apparatuses 1 are connected, a plurality of painting chambers 2 are communicated to form a communication painting chamber 22 for allowing the automobile body 7 to pass therethrough. A coating line having a required length can be formed by appropriately changing the number of connecting the coating booth apparatuses 1.

As shown in FIG. 1, the painting booth apparatus 1 includes an air supply chamber 3 that creates air A that has been adjusted in temperature and humidity, a painting chamber 2 for painting an automobile body 7, and a paint mist M A recovery exhaust chamber 6 for recovery is integrally formed side by side in the vertical direction (vertical direction).
As shown in FIGS. 2 and 4, in the air supply chamber 3, the air supplied from the upper air supply path 31 for guiding the air A to the upper surface 41 of the air supply fan 4 and the side surface 42 of the air supply fan 4. A lower air supply path 32 for guiding A to the painting chamber 2 is provided. The air supply fan 4 is provided between an upper partition wall 33 that divides the upper air supply path 31 and the lower air supply path 32 vertically and a lower partition wall 34 disposed below the upper partition wall 33. . The upper air supply path 31 is formed by being surrounded by the upper partition wall 33, the ceiling plate 11 of the painting booth device 1, and the side plate upper portion 12 of the painting booth. The lower air supply path 32 is formed by being surrounded by the upper partition wall 33, the lower partition wall 34, and the side plate upper part 12 of the painting booth.

  As shown in FIG. 4, the air supply fan 4 is disposed between the upper air supply path 31 and the lower air supply path 32. The air A sucked into the upper surface 41 of the air supply fan 4 through the upper air supply path 31 is discharged from the side surface 42 of the air supply fan 4 to the lower air supply path 32. The air supply fan 4 includes a rotating fin provided with a plurality of blades in the circumferential direction and a motor that rotates the rotating fin.

A rectifying plate 35 having a plurality of through holes through which the air A passes is provided below the lower air supply path 32 and at the boundary between the air supply chamber 3 and the coating chamber 2. The size of the plurality of through holes in the rectifying plate 35 varies depending on the location so that the air A supplied from the supply chamber 3 to the coating chamber 2 flows as uniformly as possible downward in the entire coating chamber 2. Yes. The size of the through hole provided in the outer portion near the outlet 321 of the lower air supply path 32 is small, and the size of the through hole provided in the inner portion far from the outlet 321 of the lower air supply path 32 is large. . A filter 36 is disposed at the boundary between the supply chamber 3 and the coating chamber 2 and below the rectifying plate 35. In addition, a grating plate 37 provided with a plurality of through holes through which the paint mist M passes is disposed in the lower part of the coating chamber 2.

  As shown in FIG. 1 and FIG. 4, the temperature / humidity adjusting means 5 of this example is distributed and arranged in an upper air supply path 31 and a lower air supply path 32. The temperature / humidity adjusting means 5 is configured to generate air A having a target temperature and humidity in response to changes in the outside air temperature during the four seasons. The temperature / humidity adjusting means 5 includes a preheating coil 51 for heating, a washer 52 for humidification, a cooling coil 53 for cooling / dehumidification, and a reheating coil 54 for heating. A preheat coil 51, a washer 52, and a cooling coil 53 are located on the upstream side of the flow of the air A from the arrangement position of the air supply fan 4 in the upper air supply path 31. It is arranged side by side in order. A reheat coil 54 is arranged on the downstream side of the flow of the air A with respect to the arrangement position of the supply fan 4 in the lower supply path 32.

  Each of the preheat coil 51, the washer 52, the cooling coil 53, and the reheat coil 54 is disposed to be inclined obliquely in order to keep the arrangement height as low as possible. In the upper air supply path 31, an inlet filter 55 for preventing entry of dust and the like into the air supply chamber 3 is disposed at a position upstream of the preheat coil 51 in the flow of air A.

  FIG. 6A schematically shows the operation on the wet air diagram when the temperature and humidity of the air A are adjusted in winter. In winter, the temperature and humidity of the air A as outside air are low. Therefore, the air A1 taken into the air supply chamber 3 in the winter season is heated by the preheat coil 51, is then humidified by the washer 52, the humidity is increased, and the temperature is decreased. The air A2 having the target temperature and humidity is adjusted.

  FIG. 6B schematically shows an operation on the wet air diagram when the temperature and humidity of the air A are adjusted in the summer. In summer, the temperature and humidity of the air A as the outside air are high. Therefore, the air A1 taken into the air supply chamber 3 in the summer is humidified by the washer 52 to increase the humidity and decrease in temperature, and then cooled and dehumidified by the cooling coil 53 to decrease the humidity and decrease in temperature. Then, it is heated by the reheat coil 54 and adjusted to air A2 having target temperature and humidity.

As shown in FIGS. 1 and 3, a coating nozzle 21 for performing spray coating is disposed in the coating chamber 2. The coating chamber 2 is opened in the communication direction L that is one of the lateral directions, and the coating nozzle 21 is provided on the side plate 13 that is positioned in a direction orthogonal to the communication direction L. The air A whose temperature and humidity are adjusted in the air supply chamber 3 passes through the rectifying plate 35 and the filter 36 and passes through the coating chamber 2 from the top to the bottom. The paint C sprayed by the paint nozzle 21 is applied as uniformly as possible to the automobile body 7 by the flow of air A.
A recovery chamber 23 for collecting the paint mist M recovered in the recovery exhaust chamber 6 is formed between the painting chamber 2 and the recovery exhaust chamber 6.

  As shown in FIG. 5, the recovery exhaust chamber 6 is provided with a cyclone container 61 into which the paint mist M and air A remaining after the painting is performed in the painting chamber 2 are sucked. The cyclone container 61 is disposed in a state where the central axis thereof is slightly inclined from the horizontal direction (a state where the cyclone container 61 is inclined at an angle within 15 degrees from the horizontal direction). The cyclone container 61 sucks the spray-like paint mist M in a swirl flow and separates the paint mist M into a liquid or solid paint residue N and air A. In the portion located on the downstream side of the cyclone container 61, a portion in which the container shape is narrowed in a triangular pyramid shape is formed.

  The paint mist M is sucked into the cyclone container 61 from an inlet 611 formed on the outer periphery on the upstream side of the cyclone container 61. When the paint mist M swirls and flows in the cyclone container 61, the paint residue N in the paint mist M falls from the residue outlet 612 formed at the downstream end of the cyclone container 61, and the paint mist M The air A inside is exhausted from an air outlet 613 formed at the upstream end of the cyclone container 61.

  As shown in FIGS. 1 and 5, a collection box 62 for collecting and collecting the paint residue N is disposed below the residue outlet 612 of the cyclone container 61. The air outlet 613 of the cyclone container 61 is connected to an exhaust chamber 63 formed on the side plate 13 of the painting booth apparatus 1. The exhaust chamber 63 is connected to the inlet 311 of the upper air supply path 31 in the air supply chamber 3 by a circulation path 64 provided on the side of the painting chamber 2, the air supply chamber 3, and the recovery exhaust chamber 6. Then, the air A exhausted into the exhaust chamber 63 is again sucked into the air supply fan 4 in the air supply chamber 3. Then, the air A once adjusted for temperature and humidity is circulated to the air supply chamber 3, the coating chamber 2, and the recovery exhaust chamber 6. In addition, the air A exhausted from the air outlet 613 of the cyclone container 61 can be exhausted to the outside of the coating booth apparatus 1.

Next, the operation of the painting booth apparatus 1 will be described.
In the painting booth apparatus 1, the air A is sucked into the air supply chamber 3 by the operation of the air supply fan 4, and the temperature and humidity of the air A sucked into the air supply chamber 3 by the temperature / humidity adjusting means 5 are adjusted. Adjustments are made. And the air A in which the temperature and humidity have been adjusted flows downward in the coating chamber 2. At this time, the paint C sprayed from the paint nozzle 21 in the paint chamber 2 is mixed with the flow of the air A, and the automobile body 7 is painted with the air A mixed with the paint C. Next, the paint mist M remaining after the painting is performed flows downward together with the air A and is sucked into the cyclone container 61 in the recovery exhaust chamber 6. Then, the paint mist M is separated into the paint residue N and the air A by the cyclone container 61.

Next, the effect of the painting booth apparatus 1 will be described.
In the painting booth apparatus 1, an air supply chamber 3 in which an air supply fan 4 and temperature / humidity adjusting means 5 are arranged is provided above the painting chamber 2, and a paint mist M is provided below the coating chamber 2. And a recovery exhaust chamber 6 for exhausting air A is provided. With this configuration, the painting booth apparatus 1 can have the functions of supplying and exhausting air A and adjusting the temperature and humidity, and the function of collecting the paint mist in one apparatus.

The air supply fan 4 disposed in the air supply chamber 3 rotates around the rotation axis O in the vertical direction, and sucks air A from the upper surface 41 and discharges the sucked air A from the side surface 42. ing. The temperature / humidity adjusting means 5 is arranged in the air supply chamber 3 with the vertical dimension as small as possible. Thereby, the air supply chamber 3 having a small vertical height can be formed above the coating chamber 2.
Further, since the air supply chamber 3 in which the air supply fan 4 is disposed is provided above the painting chamber 2, the distance from the air supply fan 4 to the painting chamber 2 can be shortened as much as possible. The supply fan 4 is not disposed outside the painting booth apparatus 1 and is not disposed adjacent to the painting booth apparatus 1 in the lateral direction.

  Therefore, according to the painting booth apparatus 1 of this example, the distance from the supply fan 4 to the painting chamber 2 can be reduced, and the apparatus can be downsized.

DESCRIPTION OF SYMBOLS 1 Painting booth apparatus 2 Painting room 3 Supply room 31 Upper supply path 32 Lower supply path 4 Supply fan 41 Upper surface 42 Side surface 5 Temperature / humidity adjustment means 6 Recovery exhaust chamber 61 Cyclone container 7 Automobile body (product)
A Air M Paint mist

Claims (6)

A painting room where the product is painted,
Provided above the coating chamber, and the air supply chamber provided upper air supply path and the lower air supply path for supplying air to said paint chamber adjacent to the vertical,
Provided on at least one of said upper air supply path and the lower air supply path, and the temperature and humidity adjusting means for performing the temperature and adjust the humidity of the air supplied to the painting chamber,
An air supply fan that is disposed in the lower intake path and rotates about the vertical axis of rotation to suck air from the upper surface and discharge the sucked air from the side surface ;
Air in the upper air supply path passes in the horizontal direction and is sucked into the upper surface of the air supply fan, and air discharged from the side surface of the air supply fan passes in the lower air supply path in the horizontal direction. A painting booth apparatus configured to be guided from both sides of the lower air supply path to the painting chamber . The rectifying plate having a plurality of through holes through which air passes is provided below the lower air supply path and at the boundary between the air supply chamber and the coating chamber. The painting booth apparatus according to 1. In the lower air supply path, air is heated as one of the temperature / humidity adjusting means on the side of the air supply fan and on the downstream side of the air flow from the position of the air supply fan. The coating booth apparatus according to claim 1, wherein a coil for the purpose is disposed. A recovery exhaust chamber which is provided below the coating chamber and which collects spray-like paint mist remaining after the product is coated in the coating chamber and exhausts air from the coating chamber ;
The painting booth apparatus according to any one of claims 1 to 3, wherein the air exhausted from the recovery exhaust chamber is configured to be sucked into the air supply fan again . The recovery exhaust chamber is provided with a cyclone container that forms a swirling flow and sucks the paint mist, and separates the paint mist into a liquid or solid paint residue and air,
The coating booth apparatus according to claim 4 , wherein the center axis of the cyclone container is oriented in a substantially horizontal direction or a direction inclined with respect to the horizontal direction. The painting booth device has a unit structure that can be connected in the lateral direction,
The plurality of coating chambers are connected to each other when a plurality of the coating booth apparatuses are connected to each other, and a communication coating chamber for allowing a product to pass therethrough is formed. The painting booth apparatus as described in any one of.

Images