JPH07318246A - Dryer for panel and dryer for building unit - Google Patents

Abstract

PURPOSE:To uniformly dry the panel of an outer wall panel, etc., or a painted surface of a building unit without drying unevenness, to improve its thermal efficiency, to shorten a drying time and to reduce power consumption of thermal energy in the case of drying them by blowing hot air. CONSTITUTION:A dryer (drying board) 1 for a panel to be dried and a dryer for a building unit dry the painted surface 2 of an outer wall panel 22 for forming the unit 20 with hot air, and comprise hot air outlets 12 at many positions opposed to the surface 2, and hot air recovery ports 15 provided at the periphery of the outlets 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drying device for panels such as outer wall panels and a drying device for building units.

[0002]

2. Description of the Related Art Conventionally, a drying apparatus for a building unit having an outer wall panel has a hot air blowout port provided above the coating surface of the outer wall panel of the building unit, as disclosed in Japanese Patent Publication No. 2-35230. By providing a hot air recovery port below, the painted surface was dried by the flow of hot air parallel to the painted surface.

[0003]

However, the prior art has the following two problems. 1. Since the flow of hot air parallel to the coated surface is used, there is a difference in wind speed and air volume between the top, bottom, left and right of the coated surface, and the entire coated surface cannot be uniformly dried, resulting in uneven drying. 2. The hot air is blown out from the blow-out port, and after being subjected to a long range of drying from the upper side to the lower side of the coated surface, the temperature is largely lowered and the hot air is collected from the recovery port. Therefore, the difference between the blowing temperature of hot air and the recovery temperature is large, and as a result, the thermal efficiency is poor, the drying time is long, and the amount of heat energy consumed is large.

The present invention, when drying the painted surface of a panel such as an outer wall panel or a building unit by blowing hot air,
It is an object of the present invention to achieve uniform drying without causing unevenness of drying, improve thermal efficiency, shorten the drying time, and reduce the consumption of heat energy.

[0005]

According to a first aspect of the present invention, there is provided a panel drying apparatus for drying a coated surface of a panel by blowing hot air on the panel. And a hot air collecting port is provided around each hot air blowing port.

According to a second aspect of the present invention, there is provided a drying apparatus for a building unit, wherein the coating surface of the building unit is dried by blowing hot air onto the coating surface of the building unit. A hot air outlet is provided in each of the hot air outlets, and a hot air recovery opening is provided around each hot air outlet.

A drying apparatus for a building unit according to a third aspect of the present invention is the drying apparatus for a building unit according to the second aspect, wherein the hot air outlet has an air volume adjusting device.

A drying apparatus for a building unit according to a fourth aspect of the present invention is a drying apparatus for a building unit for drying a coated surface of the building unit by blowing hot air, and the building unit is carried in and out of a drying work area. Transport conveyor,
It has a drying board provided around the drying work area.The drying board has hot air outlets at each of a number of positions facing the painted surface of the building unit, and hot air outlets are provided around each hot air outlet. The drying board is provided and configured, and the drying work position with respect to the painted surface of the building unit can be changed according to the size of the building unit.

A drying device for a building unit according to a fifth aspect of the present invention is the drying device for a building unit according to the fourth aspect, wherein the drying device is provided in the drying plate at a right angle to a transport direction of a transport conveyor. The drying plate can be opened and closed with respect to the transportation area of the building unit.

[0010]

According to the present invention described in claims 1 and 2, there are the following two functions. 1. The hot air is blown out from the hot air outlet and hits the coated surface, and is then collected in the hot air outlet around the hot air outlet. As a result, the flow of hot air becomes perpendicular to the painted surface. For this reason, the wind speed and the air volume are uniform on the upper, lower, left and right sides of the coated surface, and the entire coated surface can be dried uniformly and evenly.

2. The coated surface, the hot air outlet, and the hot air recovery port are close to each other. Therefore, the hot air is recovered immediately after it is blown out, and the decrease in the recovery temperature can be suppressed. Therefore, the difference between the blowing temperature and the recovery temperature can be made extremely small, and as a result, the thermal efficiency can be improved, the drying time can be shortened, and the thermal energy consumption can be reduced.

According to the present invention described in claim 3, the following effects are obtained. Since the air flow rate adjusting device is provided at the hot air flow outlet, the hot air flow rate can be reliably and easily adjusted to the optimum air flow rate according to the drying condition of the coated surface, and the drying quality and the drying efficiency can be improved.

According to the present invention described in claim 4, the following effects are obtained. Depending on the size of the building unit placed on the transport conveyor and set in the drying work area, the drying board can be positioned at an appropriate drying work position. Therefore, in a building unit of any size, the flow of hot air to the painted surface can be optimized, and the drying quality and the drying efficiency can be improved.

According to the present invention described in claim 5, there is the following action. The drying plate, which is installed orthogonal to the transport direction of the transport conveyor, can be opened and closed with respect to the transport area of the building unit. Therefore, it is possible to easily form the drying work area for the building unit on the transport path of the transport conveyor.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a drying plate of the present invention (panel drying device)
FIG. 2 is a schematic diagram showing a building unit drying device of the present invention, and FIG. 3 is a schematic diagram showing a drying operation state according to the present invention.

The drying board 1 is a panel drying device for drying the painted surface 2 of the outer wall panel 22 constituting the building unit 20 by blowing hot air, and as shown in FIG. Constitute. The building unit drying device 30 is installed in the drying work area of the building unit assembly line. The building unit 20 includes a floor surface portion 21,
The outer wall panel 22 is provided upright around the floor surface portion 21. The building unit 20 is manufactured by appropriately selecting the shape, the interior, the installation equipment, and the exterior according to the unit building to be built, and therefore the number and the mounting position of the outer wall panels 22 are not limited to those shown in the drawing. After the outer wall panel 22 is attached to the floor surface portion 21, the building unit 20 is coated with the outer wall panel 22, and is carried into the drying device 30 of the building unit 20. In this embodiment, the painted surface of the building unit 20 is also the painted surface 2 of the outer wall pawl 22.

As shown in FIG. 2, the building unit drying device 30 has a conveyer conveyor 31 which is continuously provided in the building unit production plant, and the building conveyer 31 is used to move the building unit 20 to the building unit drying device. Carry it in to 30 and carry it out. Reference numeral 32 is a stool for placing the building unit 20 on the conveyor 31. A plurality of drying boards 1 are erected around the above-mentioned drying device 30 of the building unit along the conveyor 31. Drying board 1 is a conveyor 3
A plurality of them are provided on the lateral side of 1 (dryer 1A) in parallel with the transport direction, and at the entrance side of the transport conveyor 31 (dryer 1B).
And a conveyor 3 on each of the output side (drying board 1C)
It is provided orthogonal to 1.

Here, the drying platen 1 provided on the entrance side of the transport conveyor 31 is orthogonal to the transport direction of the transport conveyor 31.
B is composed of a pair of left and right sides, and can be opened and closed with respect to the transport area of the building unit 20 by a double-opening method. The entrance side drying board 1B is opened when the building unit 20 is loaded,
It is closed when the building unit 20 is dry. Further, the drying boards 1C provided on the exit side of the transport conveyor 31 orthogonal to the transport direction of the transport conveyor 31 are also composed of a pair of left and right, and can be opened and closed with respect to the transport area of the building unit 20 by a double-opening method. There is. The drying board 1C on the delivery side is opened when the building unit 20 is carried out, and is closed when the building unit 20 is dried.

The entrance side drying board 1B is supported by the traveling moving device 33 and can be moved in the carrying direction of the carrying conveyor 31, and the drying work position of the building unit 20 with respect to the outer wall panel 2 is set to the size of the building unit 20. It can be changed according to. It should be noted that the drying machine 1A on the side and the drying machine 1C on the exit side are also placed at the drying operation position of the building unit 20.
It may be changeable according to the size of the. Further, in the drying platen 1, for example, a plurality of drying plates 1
Among A, only the drying board 1A facing the outer wall panel 2 of the building unit 20 is operated, and the other drying boards 1A are stopped.

As shown in FIG. 1, the drying board 1 (panel drying apparatus of the present invention according to claim 1) comprises a hot air supply unit 10 and a hot air recovery chamber 11 provided in front of the hot air supply unit 10. The hot air supply unit 10 includes a large number of hot air outlets 12 provided on the side facing the coated surface 2 (front side), and the drying platen 1.
And a hot-air buffer chamber 13 occupying the latter half of the hot-air buffer chamber 13. The hot-air outlet 12 and the hot-air buffer chamber 13 are connected by a hot-air outlet tube 14. The hot air collecting chamber 11 has a hot air blowing tube 1 on the front surface.
A large number of hot air recovery ports 15 through which 4 is loosely inserted and openings 16 used for the air volume adjusting device 5 are opened.

In this embodiment, the drying platen 1 is shown by disassembling the hot air supply part 10 and the hot air recovery chamber 11 in FIG. 1, but it is a hollow rectangular parallelepiped box partitioned into approximately two layers in front and back. It is the body. The drying platen 1 is composed of a hot air buffer chamber 13 in the latter half part and a hot air recovery chamber 11 in the first half part, and a hot air blowing tube 14 penetrates the hot air recovery chamber 11 and the hot air recovery port 15 to face the surface part 2. Hot air outlet 12 at each of multiple positions
Is open. Since the hot-air blowing cylinder 14 is loosely inserted in the hot-air collecting port 15, the gap formed around each hot-air blowing port 12 becomes an effective hot-air collecting port. That is, a drying board (panel drying device) 1 and a building unit drying device 3
In No. 0, hot air outlets 12 are provided at each of a number of positions facing the coated surface 2 of the outer wall panel 22, and hot air recovery ports 15 are provided around each hot air outlet 12.

The hot air buffer chamber 13 communicates with the hot air supply duct 41 and forms a hot air supply path 4A. Each hot air recovery chamber 11 communicates with the hot air recovery duct 42 to form a hot air recovery path 4B. The hot air recovery duct 42 and the hot air supply duct 41 are connected by the blower 40, and the hot air circulation path 4 is formed. A burner capable of generating dry air in a hot air state, an air volume adjusting damper, a vibration damping canvas, and a fire damping damper are provided in an intermediate portion of the hot air supply duct 41. A fireproof damper, a vibration-proof canvas, and a metal filter are provided in the middle of the hot air collecting duct 42.

Further, as shown in FIG. 3, each hot air outlet 12 is provided with an air volume adjusting device 5 capable of adjusting the amount of air blown out. The air volume adjusting device 5 has an air volume adjusting needle 51.
And a shaft body 52 that is attached to the hot air blowing cylinder 14 and the air volume adjusting needle 51. The air volume adjusting needle 51 is
It is provided so as to be slidable back and forth with respect to the hot air buffer chamber 13, and adjusts the opening area of the hot air blowout port 12 with respect to the hot air buffer chamber 13. The air volume adjusting needle 51 is provided with a board 53 extending laterally. The shaft body 52 is the hot air collecting chamber 11
Further, it has a knob 54 on the front surface of the drying platen 1, penetrating through the opening 16 and a male screw 55 is screwed on the rear side. A female screw 56 is threaded on the board 53 and is screwed with a male screw 55 of the shaft body 52. That is, the amount of blown air can be adjusted by screwing the knob 54 protruding to the front surface of the surface drying device 1. Also, a knob (not shown) on the rear surface of the drying board 1
It is also possible to adjust the amount of air blown out by screwing.

The operation of this embodiment will be described below.
The hot air supplied from the hot air supply duct 41 to the drying board 1 is
Immediately before being blown out from the hot air outlet 12, the hot air buffer chamber 1
At 3, the flow velocity is once reduced, and the temperature and pressure of the hot air blown out from any of the hot air blowout ports 12 can be made uniform. Therefore, the wind speed and the air volume are uniform on the upper, lower, left and right sides of the coated surface 2, and the entire coated surface 2 can be dried uniformly and evenly. The hot air is blown out from the hot air outlet 12 and the coated surface 2
After hitting, it is recovered in the hot air recovery port 15 around the hot air outlet 12. As a result, the flow of hot air becomes perpendicular to the painted surface 2. Therefore, the wind speed and the air volume are uniform on the upper, lower, left and right sides of the coated surface 2, and the entire coated surface 2 can be dried uniformly and evenly.

Further, the coated surface 2, the hot air outlet 12,
The hot air recovery ports 15 are close to each other. Therefore, the hot air is recovered immediately after it is blown out, and the decrease in the recovery temperature can be suppressed. Therefore, the difference between the blowout temperature and the recovery temperature is extremely small, resulting in improved thermal efficiency.
The drying time can be shortened and the consumption of heat energy can be reduced. Further, a hot air recovery chamber 11 is provided on the front side of the hot air buffer chamber 13, and a hot air recovery port 15 opened on the front surface of the hot air recovery chamber 11 is provided.
Since the hot air blow-off tube 14 is loosely inserted thereinto, it is easy to manufacture.

Further, since each hot air outlet 12 is provided with an adjustable air amount adjusting device 5, the hot air outlet amount can be reliably and easily adjusted to the optimum air amount in accordance with the drying condition of the coated surface 2 and dried. Quality and drying efficiency can be improved.

Further, according to the size of the building unit 20 set on the transporting conveyor 31 and set in the building unit drying device 30, the drying board 1 can be positioned at an appropriate drying work position. Therefore, in a building unit of any size, the flow of hot air to the painted surface 2 can be optimized, and the drying quality and the drying efficiency can be improved.

Further, the drying board 1 provided orthogonally to the carrying direction of the carrying conveyor 31 can be opened and closed with respect to the carrying area of the building unit 20. Therefore, the drying work area for the building unit 20 can be easily formed on the transport path of the transport conveyor 31.

In a specific embodiment of the present invention, the outlet air velocity is 25 m / sec and the coating surface air velocity is 7.7 m / se.
c, the outlet temperature was 75 ° C., the tact time was 7 minutes, the production capacity was 1,000 units / month, and the production of building units was realized, and the conventional drying efficiency (tact time 10 minutes) was significantly improved.

The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific structure of the present invention is not limited to this embodiment, and changes in design within the scope not departing from the gist of the present invention can be made. Even if it exists, it is included in the present invention. For example, the drying apparatus for a panel and the drying apparatus for a building unit of the present invention include not only the outer wall surface of the building unit but also the inner wall surface, ceiling surface, roof surface,
It may be one that dries a painted surface such as a floor surface.

[0031]

As described above, according to the present invention, when a panel such as an outer wall panel and a painted surface of a building unit are dried by blowing hot air, it can be uniformly dried without causing unevenness in drying, and the thermal efficiency can be improved. It can improve, shorten the drying time, and reduce the consumption of heat energy.

[Brief description of drawings]

FIG. 1 is a schematic view showing a drying plate (panel drying device) of the present invention.

FIG. 2 is a schematic view showing a drying apparatus for a building unit according to the present invention.

FIG. 3 is a schematic diagram showing a drying operation state according to the present invention.

[Explanation of symbols]

 1, 1A, 1B, 1C Drying board (panel drying device) 10 Hot air supply unit 11 Hot air recovery chamber 12 Hot air outlet 13 Hot air buffer chamber 14 Hot air outlet tube 15 Hot air recovery port 2 Painted surface 20 Building unit 22 Exterior wall panel 30 Building Drying device for unit 31 Conveyor 4 Hot air circulation path 40 Blower 41 Hot air supply duct 42 Hot air recovery duct 5 Air volume adjustment device 51 Air volume adjustment needle 52 Shaft body 53 Board 54 Knob 6 Hot air recovery section

Claims (5)

[Claims] 1. A panel drying apparatus for drying a coated surface of a panel by blowing hot air, wherein hot air outlets are provided at a plurality of positions facing the coated surface of the panel, and hot air is collected around each hot air outlet. A panel drying apparatus having a mouth. 2. A drying apparatus for a building unit, which dries a painted surface of a building unit by blowing hot air, wherein hot air outlets are provided at a plurality of positions facing the painted surface of the building unit, and around each hot air outlet. A dryer for a building unit, characterized in that a hot air recovery port is provided in the. 3. The drying apparatus for a building unit according to claim 2, wherein an air flow rate adjusting device is provided at the hot air outlet. 4. A drying apparatus for a building unit for drying a coated surface of a building unit by blowing hot air, a conveyor for loading and unloading the building unit, and a drying board provided around the drying work area. The dryer has a hot air outlet at each of a number of positions facing the painted surface of the building unit, and a hot air recovery port is provided around each hot air outlet, and the dryer is The drying apparatus for a building unit, wherein the drying work position on the painted surface of the building unit can be changed according to the size of the building unit. 5. The drying apparatus for a building unit according to claim 4, wherein among the drying boards, a drying board provided orthogonally to a transfer direction of a transfer conveyor can be opened and closed with respect to a transfer area of the building unit. .