KR970001792B1 - Painting and drying apparatus - Google Patents

Abstract

Disclosed is a method and apparatus to dry paint on a car body. The apparatus comprises dampers(a, b, c) and an inhalation filtering room(12). The damper(a) is installed between a supplying duct(14) and the inhalation filtering room(12). The damper(b) ejects pure air from the blower(181). The damper(c) is installed in a circular duct(19). The inhalation filtering room(12) is installed between the transmitting part and the inhalation part. Thereby, drying the paint on a car body is able to present best performance, and maintenance of the apparatus is convenient.

Description

Paint drying method and paint drying device for automobile

1 is a perspective view showing a partially cut paint drying apparatus according to the present invention.

Figure 2 (a) is a schematic side view showing the flow of air when painting the vehicle in the paint drying apparatus according to the present invention.

Figure 2 (b) is a schematic side view showing the flow of air when drying the vehicle in the paint drying apparatus according to the present invention.

Figure 3 (a) is a schematic side view showing the flow of air when painting the vehicle in a conventional paint drying apparatus.

Figure 3 (b) is a schematic side view showing the flow of air when drying the vehicle in a conventional paint drying apparatus.

4 shows an example of a relay circuit used in the paint drying apparatus according to the present invention.

* Explanation of symbols for main parts of the drawings

1: Paint drying device 3: Air suction part

11: suction duct 12: filter chamber

13: sending unit 14: supply doctor

15: Paint and drying unit 16: Exhaust duct

17: filter chamber 18: exhaust

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for painting and drying a vehicle, and more particularly, to a vehicle which can increase efficiency during drying and facilitate filter cleaning of a suction filter chamber by re-suctioning and circulating dry air supplied at a high temperature. It relates to a paint drying method and apparatus thereof.

In general, the device according to the painting and drying method of the car is configured to inhale and circulate the outdoor air when a worker paints the vehicle in one painting room, and then dry it with warm air after the painting is finished. have.

FIG. 3 illustrates such a prior art. The structure and operation of the conventional apparatus will be described with reference to FIG.

The painting and drying apparatus 20 is a painting and drying unit 23 for securing a work space for painting and drying the vehicle, and a painting and supplying unit for supplying air from the outdoors to the painting and drying unit 23. And a duct 22 extending from the upper portion of the drying unit 23 to the outside to form an air flow path, and the filter 222 is accommodated, and outdoor air in the painting and drying unit 23 through the air supply duct 22. It includes an air suction portion 21 extending from the air supply duct 22 constituting the air flow path to be sucked.

In addition, the painting and drying apparatus 20 is an exhaust duct extending from the lower portion of the painting and drying unit 23 to the outside so that the air circulated from the painting and drying unit 23 forms an air discharge passage ( 24, an air purifier 24 for purifying the contaminated air provided at the end of the exhaust duct 24 constituting the discharge passage, and an exhaust part 26 extending from the air purifier 25 It includes.

Conventional painting and drying apparatus 20 will be described in more detail for each part as follows.

The painting and drying unit 23 forms a painting and drying room 232 which is sealed to secure a work space into which a car can be entered in order to paint and dry the car, and a closed space is provided on the ceiling surface of the painting and drying room 232. It is composed of a distribution plate 231 formed with a hole 231a so that the air is evenly discharged therein, and the bottom surface has a grating 233 so that the air circulated in the sealed space can escape. The exhaust duct 24 is connected to the lower part.

The air suction unit 21 is a suction duct 211 for introducing air from the outside, a blower 213 located at the lower end of the suction duct 211, and is located at the outlet of the blower 213 to supply air. A heat exchanger 216 provided with a burner 215 heated to a high temperature, and the heat exchanger 216 is discharged through the suction duct 211 to supply only an appropriate amount of air to the painting and drying unit 23 at the rear end. Damper 214 for opening and closing the ball is provided to adjust the amount of air.

The exhaust duct 24, which is connected to the painting and drying unit 23 through the grating 233, is connected to the air purifying unit 25. The air purifying unit 25 connects the filter 251 and the blower 252. It purifies the air used in the painting and drying unit 23, and discharges through the exhaust (26).

Looking at the operation of the conventional painting and drying apparatus 20 having such a configuration as follows.

First, referring to FIG. 3A, which illustrates a painting operation, when the vehicle 10 is received in the painting and drying unit 23, the worker blows air 213 installed in the air suction unit 21 and the air purifying unit 25. , 252) to start the operation while discharging the unpainted and scattered unnecessary paint particles generated during the work process to the outside.

At this time, the air entering through the suction unit 21 is filtered through the filter 212, the contaminant is filtered, and sent to the supply duct 22 by the blower 213 through the hole 231a of the distribution plate 231 And it is discharged while spreading uniformly inside the drying unit (23). The air containing unnecessary paint particles which are not painted and scattered during the painting work in the painting and drying section 23 are exhausted through the grating 233 at the bottom of the painting and drying section 23. ), The polluted air is purified while passing through the filter 251 is discharged to the outside.

3 (b) is a view showing a process of drying the painted vehicle 10, the air flow in the drying operation is generally the same as the air flow in the painting operation. However, the air coming in through the air suction unit 21 is filtered through the filter 212 and then sent to the supply duct 22 while being heated by the burner 215 and the hole 231a of the distribution plate 231. Discharged by uniformly spreading through the paint and drying unit 23 through the through, the car painted by the heated air is dried, and the heated air soon exhaust gas through the grating 233 on the bottom surface (24) It is sent to and purified through the filter 251 is discharged to the outside.

However, since the heating air used to dry the painted vehicle 10 in the above-described conventional painting and drying apparatus 20 is discharged to the outside as it is, a lot of energy is consumed to heat the newly introduced external air. This long, unnecessary manufacturing cost was consumed and an uneconomical problem occurred, and when replacing the filter 222 installed in the air duct 22, dust and impurities accumulated in the filter 222 were replaced. Since the coating and drying chamber 232 is introduced from the filter 222 after the replacement work must be cleaned of the interior of the painting and drying chamber 232 has occurred.

On the other hand, Japanese Unexamined Utility Model Publication No. 4-87773 (published on July 30, 92) discloses a work coated with a paint having a first drying room and a second drying room through a first drying room, and a second drying room. In the drying apparatus which drying operation is complete when taken out from a drying chamber, The 1st drying chamber which installed the 1st heat source inside the preliminary drying, The 2nd drying chamber which provided the 2nd heat source in the interior which performs this drying, The said 1st 1, In the 2nd drying room which connects a 2nd drying room, while installing the 1st piping which installed the opening in the vicinity of the said 2nd heat source, the said 1st, 2nd drying room, and the branch which receives outside air on the way, A paint drying device comprising a second pipe provided with a filter in the middle thereof is disclosed.

However, the paint drying apparatus is simply drying through the first heat source of the first dry matter and the second heat source of the second drying chamber while moving the work already painted in the separate paint device by the chain conveyor. When the finished workpiece reaches the lower side of the first heat source and the second heat source, the heated air is directly dried, and the heated air is circulated with the outside air and exhausted at the same time. It is suitable as a small drying device for direct drying by heat source while transferring to the air. Therefore, it is unnecessary to adjust the air circulation and exhaust volume of the vent pipe and the exhaust pipe, so that the amount of heated air to be recycled, outside air sucked in from the outside and exhaust air are controlled. Heated air is exhausted through direct duct without being able to be recycled. There.

Therefore, the object of the present invention is to solve the problems and to exhaust only a small amount of high-temperature air discharged, and the rest is installed by the damper to each duct so that it can be used by re-absorption and painting and drying method to minimize the energy consumption and It is to provide a device accordingly.

It is another object of the present invention to prevent dust and impurities from entering the paint chamber when replacing a suction filter that filters circulating hot air and foreign substances such as paint powder and dust contained in new suction air. In order to provide a painting and drying method and a device according to which the filter chamber is separated and installed easily.

The present invention that can achieve the object is a paint and drying unit forming a space for entering the car for painting and drying the vehicle, and installed on top of the painting and drying unit to supply air to the painting and drying unit A supply duct provided therein, an exhaust duct provided at the bottom of the painting and drying section for discharging air in the painting and drying section, and a circulation installed at the bottom of the painting and drying section for reusing air in the painting and drying section An air supply having a duct, a first intake connected to the other end of the circulation duct, and a second intake for inhaling air from the outside; a blower, a burner, and a heat exchanger for heating the air supplied from the air supply; In the painting and drying apparatus comprising a discharge unit provided and an air exhaust unit connected to one end of the exhaust duct A damper c and a damper a are installed at the first inlet and the second inlet of the air suction unit, and a damper b is installed at the exhaust part to adjust the air volume. A filter is accommodated between the discharge unit and the air suction unit and the door is opened. By a painting and drying apparatus including a suction filter chamber having, and a method of using such a painting and drying apparatus; When painting the vehicle in the painting and drying unit, the outside air is sucked in the state in which the damper a of the second inlet of the air supply unit is completely opened, and the air mixing unit supplies air to the painting and drying unit through the supply duct, The air contaminated by contaminants generated during painting is discharged to the outside via the exhaust duct through the exhaust section where the damper b is completely opened, and when the vehicle is dried in the painting and drying unit, the second intake port of the air supply unit The outside air is sucked through the air supply unit to heat the air and supplies the heated air to the painting and drying unit through the supply duct, and the air of the painting and drying unit is discharged through the circulation duct. 1 Enter the air supply unit through the suction port, and heat it again, and heat the heated air through the supply duct. Air is supplied to the painting and drying unit, and the air of the painting and drying unit is discharged through the circulation duct to enter the air supply unit through the first suction port, and is heated again, and the heated air is again painted through the supply duct. And a part of the damper b of the exhaust part is opened, the damper c of the first inlet is complete, and the damper a of the second inlet is partially opened to compensate for the amount of air discharged to the exhaust part so as to be supplied to the drying part. It is achieved by a drying method.

In addition, the painting and drying apparatus using the method includes a filter housed between the air supply unit and the air supply unit for supplying air to a space into which the car can enter to paint and dry the car through a suction filter chamber having a door. When replacing the suction filter that filters the hot air circulated and foreign matter such as paint powder and dust contained in the new suction air, separate the filter chamber to prevent the dust and impurities from entering the paint chamber. It is achieved by a painting and painting device that is easy to replace.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a paint drying apparatus according to the present invention.

FIG. 2 (a) is a schematic side view showing the flow of air when painting an automobile.

Figure 2 (b) is a schematic side view showing the flow of air when building the car.

First, referring to FIG. 1, the paint apparatus 1 includes a damper a 111 arranged underneath the suction duct 11 for inducing the flow of external air, as necessary, to adjust the air inflow rate as necessary. The suction filter chamber 12 is configured to purify the contaminated air at one end of the filter, and a filter 121 for filtering contaminants is formed in the suction filter chamber 12 and the filter 121 can be replaced on the side wall. The door 122 is configured to allow the worker to enter and exit, and the blower 131, the burner 132, and the heat exchanger 133 are connected to the discharge part 13 formed to be connected to one side of the suction filter chamber 12. And a supply duct 14 formed at an upper portion thereof, and a painting and drying portion 15 are formed at a lower portion of the supply duct 14, and the painting plate and drying portion 15 has an upper hole 151a. And to form a grating 153 in the lower portion.

In addition, an exhaust duct 16 configured to guide the flow of exhaust air is formed at the lower part of the painting and drying unit 15, and an exhaust filter having a filter 171 for filtering contaminated exhaust air at the side of the exhaust duct 16 is provided. A chamber 17 is configured, and a blower 181 for forcibly discharging air in the painting and drying chamber 152 is formed in the exhaust unit 18 formed at the outlet 172 of the exhaust filter chamber 17 and above it. A damper b 182 is configured to adjust the amount of air discharged. In addition, a circulating duct 19 for inducing high temperature air flow in the painting chamber 152 is provided at the lower end of the painting and drying unit 15 and the side wall of the suction filter chamber 12 with a damper c 191.

Referring to the operation of the present invention configured as described above are as follows.

First, the flow of air in the process of painting the car, while the worker paints the car 10, as shown in Fig. 2 (a) while the blower (131, 181) while operating the inflow of outdoor air In this case, the air flows through the suction duct 11, passes through the damper a (11) that is completely open, and passes through the filter 121 of the suction filter chamber 12 to purify the contaminated air. The purified air is spread evenly by the blower 131 of the delivery unit 13 as it reaches the distribution plate 151 through the supply duct 14 and is discharged into the painting and drying chamber 152 through the hole 151a. The air is made into the grating 153 together with the paint particles generated while the worker paints, passes through the exhaust duct 16 and passes through the filter 171 of the exhaust filter chamber 17, and the filtered particles are filtered. Fully open by the blower 181 Through the buffer b (182) is discharged to the outside.

At this time, since the air entering the paint chamber by the blowers 131 and 181 is not heated air, there is almost no need to recycle such air.

On the other hand, when the painting operation is completed, the drying operation is performed. As shown in FIG. 2 (b), the damper a (111) configured in the suction duct 11 is partially closed, and the outdoor air, which is less introduced, is sent to the suction filter chamber 12. After entering the paint and drying chamber 152 through the unit 13 and the supply duct 14 to dry the surface of the paint chamber vehicle 10, some hot air (approximately 10%) is the exhaust duct 16 and the exhaust filter. It is discharged to the outside through the damper b 182 of the chamber 17 and the partly open exhaust 18, and the remaining hot air (approximately 10%) in the painting and drying chamber 152 is completely through the circulating duct 19. It is sucked back into the suction filter chamber 12 through the open damper c (191), and is sent to the painting and drying chamber 152 through the discharge unit 13 and the supply duct 14, and to the exhaust unit 18. To compensate for the amount of air discharged, the damper a (111) of the second inlet has hot air that is recirculated with fresh air while only partially open. The sum is continuously circulated and supplied.

This circulation of air heats the outside air, and is used for recycling it because a lot of energy is consumed, and in particular, some air is discharged to the outside of the exhaust port 18 and some hot air in the painting and drying chamber 152 When the damper b (182) passes through the damper c (191) completely through the circulation duct 19 and is sucked back into the suction filter chamber 12, the amount of air circulated can be appropriately adjusted so that the temperature inside the drying chamber can be adjusted. Can be adjusted to the optimum condition for drying.

In addition, when the painting apparatus 1 is used for a long time, the filters 121 and 171 provided in the suction filter chamber 12 and the exhaust filter chamber 17 need to be replaced. It is enough to enter and exchange, and is contained in the hot air circulated through the door 122 of the suction filter chamber 12 provided between the delivery unit 13 and the air suction unit 3, and the new suction air. It is very convenient to replace the suction filter 121 for filtering foreign substances such as paint powder and dust.

4 shows an example of a relay circuit used in the present invention.

Referring to FIG. 4, each operation state will be described. When the switch 3 is pressed, the relays R1 and R2 operate to close the contacts R1-a1 and R2-a1, and the blower ( Power is applied to the 131 to allow air to circulate into the paint chamber.

Pressing the switch 4 to dry the painted car after the painting is finished, the relay (R1) and relay (R2) is operated to close the contacts (R3-a1), the power is applied to the blower 131, In addition, by operating the relay (R5-1) to close the contact (R5-a1), the power is applied to the burner so that the air coming in through the blower 131 is heated to enter the air inside the contact (R4-a1) By closing the power supply to the circulation duct 19 is opened to circulate the heated air into the drying chamber.

At this time, the temperature inside the drying chamber is continuously detected by the detection sensor TEMP, and the operation of the relay R5-1 and the operation of the relay R4-1 are controlled according to the result, so that the temperature inside the drying chamber is optimal. Is maintained.

As described above, the present invention includes a damper a and a damper b in the suction duct and the exhaust duct, respectively, and constitutes a suction filter chamber between the suction duct and the discharge unit, and a damper c between the paint part and the suction filter chamber. The circulating duct makes it possible for the damper a and the damper b to be partially closed during the drying operation, so that the hot air stays in the painted room more as the outdoor air flows in less and the hot air is released. As the continuous damper c is used for continuous circulation, it does not have to be heated to the initial drying temperature, which reduces the heat loss.A separate filter chamber is constructed to prevent contaminants from entering the paint chamber from the filter. This will improve the inconvenience of re-cleaning.

Claims (2)

A painting and drying unit forming a space in which the vehicle can be entered to paint and dry the vehicle; A supply duct installed at an upper portion of the painting and drying unit and for supplying air to the painting and drying unit; An exhaust duct disposed on a bottom surface of the painting and drying unit for discharging air in the painting and drying unit; A circulating duct provided on a bottom surface of the painting and drying unit to reuse the air in the painting and drying unit; An air supply unit having a first suction port connected to the other end of the circulation duct and a second suction port for sucking air from the outside; A delivery unit having a blower, a burner, and a heat exchanger for heating the air supplied from the air supply unit; A painting and drying apparatus including an air exhaust portion connected to one end of the exhaust duct, comprising: a damper c provided at a first inlet of the air intake; A damper a installed at the second suction port of the air suction unit; A damper b provided at the exhaust portion; And a suction filter chamber accommodating a filter between the discharge unit and the air suction unit and having a door. A painting and drying unit forming a space in which the vehicle can be entered to paint and dry the vehicle; A supply duct installed at an upper portion of the painting and drying unit and for supplying air to the painting and drying unit; An exhaust duct disposed on a bottom surface of the painting and drying unit for discharging air in the painting and drying unit; A circulating duct provided on a bottom surface of the painting and drying unit to reuse the air in the painting and drying unit; An air supply unit having a first suction port connected to the other end of the circulation duct and a second suction port for sucking air from the outside; A delivery unit having a blower, a burner, and a heat exchanger for heating the air supplied from the air supply unit; A painting and drying apparatus including an air exhaust portion connected to one end of the exhaust duct, comprising: a damper c provided at a first inlet of the air intake; A damper a installed at the second suction port of the air suction unit; A damper b provided at the exhaust portion; In the painting and drying apparatus including a suction filter chamber, the filter is accommodated between the discharge portion and the air suction portion, the door; During the painting operation, the air flows, and in the drying process, the air is sucked in and discharged while the damper a installed at the second suction port of the air suction unit and the damper b installed at the exhaust unit are partially opened. 1 The method of driving a painting and drying apparatus to allow the air to be recycled by the circulating duct in the state that the damper c installed at the inlet is completely opened.