Dust-free spray painting booth

Abstract

A dust-free spray painting booth includes a main body, a roll-up door, an air circulation system, an air exhaust system, and a heating and air guiding system. The main body of the booth provides a space for spray painting and baking operations on vehicles. The roll-up door, air circulation system, and air exhaust system are located on one side of the main body, and the heating and air guiding system is located within the air circulation system. The heating and air guiding system includes a flow divider and a movable baffle. The flow divider defines a main air duct and two side air ducts. The movable baffle is hinged to the lower end of the flow divider, and heat pipes are installed within the side air ducts. During spray painting, the main air duct is open at the bottom, allowing high-speed airflow to pass through and avoid the heat pipes. During baking operations, the movable baffle blocks the area below the main air duct, closing it off. Slower airflow can then pass through the side air ducts and be heated into hot air for the vehicle baking process.

Description

Dust-free spray painting booth Technical Field

[0001] This invention relates to a dust-free spray painting booth, and more particularly to an automotive paint booth that features air circulation, paint filtration, air heating and temperature control, and a fast-rolling door mechanism. Prior Technology

[0002] Conventional automotive paint booths still require improvement in the efficiency and transition between spraying and baking modes. Traditional paint booths often use fixed heating elements when switching from spraying to baking. Furthermore, conventional technologies pose significant safety concerns regarding the application of electric heating systems. Because paints contain highly volatile and low-ignition-point organic solvents, traditional electric heating systems are often installed near the wall panels. If electric heating is activated simultaneously with spraying, it poses a high risk of fire or explosion, making it impossible to achieve a "spray and bake simultaneously" operation. Moreover, conventional heaters consume enormous amounts of electricity due to a lack of effective heat exchange space planning; and in cold regions, traditional technologies often rely on diesel or gas heating, making the efficiency and cost competitiveness of electric heating systems insufficient. When high-volume, high-speed airflow passes through the heating area during the spraying stage, it may cause potential damage to the heating elements due to airflow impact, or affect heating efficiency due to the lack of an effective airflow guidance mechanism.

[0003] In addition, conventional paint booth entrance roller doors are mostly simple in structure or manually operated, with slow door lifting speed. This not only reduces the efficiency of vehicle entry and exit and affects the overall workflow, but also makes it difficult to integrate a transparent observation window into the door panel, preventing external personnel from observing the working conditions inside the vehicle storage space at any time. Summary of the Invention

[0004] One of the objectives of this invention is to provide a dust-free spray painting booth equipped with an improved heating and airflow guiding device. This device can automatically or controllably adjust the airflow path according to the airflow characteristics during the spraying or baking stage, thereby improving heating efficiency and protecting the heating elements. Furthermore, by independently setting up the heating source and utilizing the principle of hot air delivery, it ensures that the heat source does not directly contact the spraying area, thus solving the safety and energy consumption problems of conventional electric heating systems.

[0005] Another objective of this invention is to provide a dust-free spray painting booth that integrates a flexible door panel and a drive mechanism to provide a quick and convenient vehicle entrance and exit. The door panel is equipped with a transparent panel to allow operators to observe the internal conditions from the outside.

[0006] This dust-free spray painting booth comprises a main body, a roll-up door device, an air circulation device, an air exhaust device, and a heating and airflow guiding device. The main body includes an outer shell, a vehicle storage space, an air inlet duct, an air outlet duct, and a vehicle entrance / exit. The outer shell defines the vehicle storage space, the air inlet duct, the air outlet duct, and the vehicle entrance / exit. The vehicle storage space is for accommodating vehicles, personnel, and various tools. The air inlet duct is formed above and connects to the vehicle storage space. The air outlet duct is formed below and connects to the vehicle storage space. The vehicle entrance / exit is located in front of the vehicle storage space. The roll-up door device is located at the vehicle entrance / exit. The air circulation device includes a first housing, an air inlet device, a regulating valve, a filter device, a blower, and a circulation valve. The first housing defines an air inlet area, an air channel regulating area, a first air channel, an air filter area, an air extraction area, an air heating area, a second air channel, and an air supply channel. The air inlet device is located in the air inlet area, which is situated to the right of the air channel regulating area. The regulating valve is located in the air channel regulating area. The first air channel is situated to the left of the air channel regulating area. The air filter area is located below the first air channel. The filter device is located in the air filtration zone, the air extraction zone is located below the first air channel on the left side, the blower is located in the air extraction zone, the blower is used to draw in air from the air filtration zone and filter the air through the filter device, the air heating zone is located above the air filtration zone, the second air channel is located above the air heating zone and also above the first air channel on the left side, the left side of the second air channel is connected to the air supply channel, the circulation valve is located between the second air channel and the first air channel, and the air supply channel is connected to the air inlet channel. The air emission device includes a base, a second housing, a water flow guide plate, a water collection area, a water curtain area, a pumping device, and an exhaust device. The base defines an exhaust area that communicates with the air outlet channel. The second housing defines an exhaust channel that communicates with the exhaust area. The water flow guide plate is disposed between the exhaust channel and the exhaust area. The water collection area is disposed at a predetermined distance below the water flow guide plate, forming the water curtain area between the water flow guide plate and the water collection area. The pumping device is disposed in the water collection area and includes a pumping pipe that connects from the water collection area to the top of the water flow guide plate. The exhaust device is disposed above the exhaust channel for extracting air from inside the exhaust channel to the outside.The heating and airflow guiding device is installed in the air heating zone and includes a flow divider, a main air duct, two side air ducts, a movable baffle, and a plurality of heat pipes. The flow divider defines one main air duct and two side air ducts in the air heating zone. The main air duct is formed between the flow dividers, and the diameter of the main air duct is larger than the diameter of the side air ducts. The movable baffle is hinged to the lower end of the flow divider, and a stop member is provided below the movable baffle. The heat pipes are all installed in the side air ducts. In the first position, the movable baffle rests against the stop member to block the area below the main air duct, thus closing the area below the main air duct. In the second position, the movable baffle is close to the flow divider, thus opening the area below the main air duct.

[0007] In a preferred embodiment, the air inlet channel extends upward from the top surface of the vehicle compartment, and the air inlet channel and the vehicle compartment are separated by a mesh structure. An air inlet filter structure is provided between the air inlet channel and the vehicle compartment.

[0008] In a preferred embodiment, the air outlet duct extends downward from the bottom surface of the vehicle compartment, and the air outlet duct and the vehicle compartment are separated by a mesh structure. An air outlet filter structure is provided between the air outlet duct and the vehicle compartment.

[0009] In a preferred embodiment, the outer shell of the computer room defines a personnel entrance / exit, which is formed on the side of the vehicle accommodating space.

[0010] In a preferred embodiment, the rolling door device includes a track, a roller, a drive unit, and a door panel. The track is arranged in pairs on both sides of the vehicle entrance / exit, and each track includes a vertical portion and a spiral portion. The vertical portion extends upward along the vertical walls on both sides of the vehicle entrance / exit, and the spiral portion is connected to the upper end of the vertical portion. The roller is disposed on one side of the spiral portion, and the drive unit is disposed at one end of the roller. The door panel includes a plurality of plates that are continuously hinged to each other. The door panel is provided with a roller, which is connected to the roller through a connector.

[0011] In a preferred embodiment, the door panel has a transparent area.

[0012] In a preferred embodiment, the first shell system is mounted on the base.

[0013] In a preferred embodiment, the surface of the water flow guide plate is inclined at the top and extends longitudinally at the bottom.

[0014] In a preferred embodiment, the upper part of the data center is integrated into a plurality of upper data center modules, which are mounted across the upper part of the data center and arranged adjacent to each other.

[0015] In a preferred embodiment, each of the components includes a support frame, a plurality of wall panels, and a plurality of lighting fixtures. The support frame is horizontally positioned above the main body of the equipment room. The wall panels and an air inlet filter structure are disposed within the support frame, and the wall panels are located on the left and right sides of the air inlet filter structure. The lighting fixtures are mounted on the wall panels.

[0016] In summary, the dust-free spray painting booth provided in this invention has the following advantages compared to other conventional technologies: 1. The structural design of the diversion baffle and the movable baffle allows the airflow to automatically bypass the heat pipes during the high-speed painting stage, effectively preventing airflow from impacting and damaging the heat pipes. Conversely, during the low-speed baking stage, the movable baffle automatically or in a controlled manner blocks the main air duct, forcing the airflow to be directed to the side air ducts, allowing it to flow completely through the heat pipes, significantly improving the heat exchange contact area and efficiency, and accelerating the generation of hot air. 2. This roller door device controls the rotation of the roller shaft via a drive unit, and the door panel, in conjunction with the track, rapidly raises and lowers, significantly improving the convenience and efficiency of vehicles entering and exiting the vehicle storage space. The viewing area of ​​the door panel allows operators to observe the painting or baking process inside the vehicle storage space from the outside. 3. The installation of this air emission device ensures that the air discharged during the painting stage can effectively filter and adsorb paint when passing through the water curtain area, reducing environmental pollution. Simple Explanation of the Diagram

[0017] [Figure 1] is a cross-sectional schematic diagram of the machine room body and roller door device of the dust-free spray painting booth of this creation.

[0018] [Figure 2] is a partial cross-sectional schematic diagram of the air circulation device and air exhaust device of the dust-free spray painting booth of this creation.

[0019] [Figure 3] is a cross-sectional schematic diagram of the air circulation device and heating guide device of the dust-free spray painting booth of this creation.

[0020] [Figure 4] is a 3D exploded view of the main body and upper module of the dust-free spray painting booth in this creation.

[0021] [Figure 5] is a front view schematic diagram of the dust-free spray painting booth for this creation.

[0022] Figure 6A is a cross-sectional schematic diagram of the air circulation device of the dust-free spray painting booth during the spray painting stage.

[0023] [Figure 6B] is a cross-sectional schematic diagram of the air exhaust device of the dust-free spray painting booth during the spray painting stage.

[0024] [Figure 7A] is a cross-sectional schematic diagram of the air circulation device of the dust-free spray painting booth of this creation during the painting stage.

[0025] [Figure 7B] is a cross-sectional schematic diagram of the air emission device of the dust-free spray painting booth of this invention during the painting stage. Implementation

[0026] Other technical contents, features, and effects of this invention will be clearly presented in the detailed description of the preferred embodiments with reference to the following drawings. To achieve simplicity and clarity, some commonly known structures and parts will be shown in a simplified schematic manner or omitted without affecting the interpretation of the patent's technical features. Furthermore, the dimensions of each structure and part in the drawings will be drawn to a scale suitable for the reader's viewing, not to the actual prototype scale.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this work pertains.

[0028] As used herein, the articles “a,” “one,” and “any” refer to one or more (i.e., at least one) items unless a specific quantity is specified. For example, “an element” means one element or more.

[0029] As used herein, the terms "first," "second," etc., are used only to distinguish descriptive elements and should not be construed as indicating or implying relative importance, order of use, or order of arrangement.

[0030] As used in this article, the terms "up," "down," "front," "back," "left," "right," "side," "top," and "bottom" used to describe component names or positional relationships are intended to help identify the positional relationships between various feature structures. The actual orientation of the feature structures may change depending on the placement angle or the user's location, and therefore should not be used to limit the scope equally covered in this article.

[0031] As shown in Figures 1 to 3, Figure 1 is a cross-sectional view of the machine room body 20 and the roller door device 30 of the dust-free spray painting booth 10 of this invention; Figure 2 is a partial cross-sectional view of the air circulation device 40 and the air exhaust device 50 of the dust-free spray painting booth 10 of this invention; and Figure 3 is a cross-sectional view of the air circulation device 40 and the heating and airflow guiding device 60 of the dust-free spray painting booth 10 of this invention. The dust-free spray painting booth 10 includes the machine room body 20, the roller door device 30, the air circulation device 40, the air exhaust device 50, and the heating and airflow guiding device 60. The machine room body 20 is used to accommodate vehicles and serves as a space for spray painting and baking operations on vehicles. The roller door device 30 is located on one side of the machine room body 20 and is used to provide an entrance and exit for opening and closing the machine room body 20. Both the air circulation device 40 and the air exhaust device 50 are located on one side of the computer room body 20. The air circulation device 40 is used to control the air circulation inside the computer room body 20, and the air exhaust device 50 is used to filter paint adhering to the air. The heating and airflow guiding device 60 is located on the air circulation device 40 and is used to heat the air.

[0032] In one embodiment, as shown in Figure 1, the computer room body 20 includes a computer room shell 21, a vehicle storage space 22, an air intake duct 23, an air exhaust duct 24, a vehicle entrance / exit 25, and a personnel entrance / exit 26. The computer room shell 21 is constructed of rigid steel and sheet metal, and internally defines the vehicle storage space 22, the air intake duct 23, and the air exhaust duct 24. The vehicle storage space 22 is used to accommodate vehicles, personnel, and various tools, serving as a space for painting and baking vehicles. The air intake duct 23 is formed above the vehicle storage space 22 and communicates with it. Specifically, the air intake duct 23 extends upward from the top surface of the vehicle storage space 22, and is separated from the vehicle storage space 22 by a mesh structure, allowing air to enter the vehicle storage space 22 through the mesh structure from the air intake duct 23. An air intake filter structure 231 may be installed between the air intake duct 23 and the vehicle compartment 22 to filter dust from the air entering the vehicle compartment 22. An air outlet duct 24 is formed below the vehicle compartment 22 and communicates with it. Specifically, the air outlet duct 24 extends downwards from the bottom surface of the vehicle compartment 22, and is separated from the vehicle compartment 22 by a mesh structure, allowing air to pass through the mesh structure from the vehicle compartment 22 into the air outlet duct 24. An air outlet filter structure 241 may also be installed between the air outlet duct 24 and the vehicle compartment 22 to filter toxic paint from the air entering the air outlet duct 24. The outer shell 21 of the server room also defines a vehicle entrance / exit 25 and a personnel entrance / exit 26. The vehicle entrance / exit 25 is formed in front of the vehicle compartment 22 for vehicle entry and exit, and the personnel entrance / exit 26 is formed on the side of the vehicle compartment 22 for personnel entry and exit.

[0033] Further, as shown in Figure 4, which is a three-dimensional exploded view of the dust-free spray painting booth 10 of this invention, the main body 20 and the upper module 27 of the main body 20 are integrated above the main body 20. The upper module 27 of the main body 20 adopts a modular design to simplify the overall assembly process and improve construction efficiency. Specifically, there are multiple upper modules 27, which are directly mounted above the main body 20 and arranged in sequence. In one embodiment, the upper module 27 includes a support frame 271, multiple wall panels 272, and multiple lighting fixtures 273. The support frame 271 is horizontally mounted above the main body 20. Each wall panel 272 and the air inlet filter structure 231 are disposed within the support frame 271, and each wall panel 272 is located on the left and right sides of the air inlet filter structure 231. Each lamp 273 is installed on each wall panel 272 and is used to provide lighting within the computer room body 20.

[0034] In one embodiment, as shown in Figures 1 and 5, Figure 4 is a front view of the dust-free spray painting booth 10 of this invention, and the roller door device 30 is a turbine high-speed roller door. It includes a pair of tracks 31, a roller 32, a drive device 33, and a door panel 34. The tracks 31 are arranged in pairs on both sides of the vehicle entrance / exit 25, each including a vertical portion 311 and a spiral portion 312. The vertical portion 311 of the track 31 extends upward along the vertical walls on both sides of the vehicle entrance / exit 25, providing a door panel 34 for shielding the vehicle entrance / exit 25; the spiral portion 312 of the track 31 is connected to the upper end of the vertical portion 311, providing a storage space for the door panel 34. The roller 32 is arranged laterally on one side of the spiral portion 312. The drive device 33 is located at one end of the roller 32 and drives the roller 32 to rotate through mechanical coupling. The door panel 34 comprises a plurality of plates 341 continuously hinged together and has a viewing area 342. Specifically, most of the panels 341 are made of opaque materials, such as, but not limited to, aluminum alloy heat insulation panels; some panels 341 are made of transparent materials, such as, but not limited to, PC or PMMA. Through the transparent panels 341, a viewing area 342 is formed, which is used to observe the interior of the vehicle's storage space 22. The top of the door panel 34 is connected to the roller 32. Specifically, both sides of the door panel 34 are provided with wear-resistant rollers (not shown in the figure), which engage in the guide grooves of the track 31. The rollers are fixedly connected to the roller 32 via special connectors (such as pull ropes) to ensure that the rotational power of the roller 32 can reliably drive the entire door panel 34 through the rollers. Apart from the door panel 34, how the turbine high-speed rolling door opens and closes is not directly related to the technical features of this invention, therefore its driving principle will not be described further.

[0035] In one embodiment, as shown in Figures 1 and 3, the air circulation device 40 includes a first housing 41, an air inlet device 42, a regulating valve 43, a filter device 44, a blower 45, and a circulation valve 46. The first housing 41 is constructed of rigid steel and sheet metal and is mounted on a base 51. The interior of the first housing 41 defines an air inlet area 411, an air channel regulating area 412, a first air channel 413, an air filter area 414, an air extraction area 415, an air heating area 416, a second air channel 417, and an air supply channel 418. The air inlet device 42 is an exhaust fan or blower, which is located in the air inlet area 411 to draw outside air into the first housing 41. The air inlet area 411 is located to the right of the air channel regulating area 412, and the regulating valve 43 is located in the air channel regulating area 412. The regulating valve 43 is a baffle that can rotate around its midpoint. Its rotation can be controlled by a motor or cylinder to regulate the amount of air entering the air passage regulating zone 412 from the air inlet zone 411. The first air passage 413 is located to the left of the air passage regulating zone 412, serving as a space for the flow or circulation of external air with the air inside the first housing 41. The air filtration zone 414 is located below the first air passage 413, and the filter device 44 is installed in the air filtration zone 414. The air extraction zone 415 is located to the left below the air filtration zone 414, and the blower 45 is installed in the air extraction zone 415. The blower 45 is used to draw in air from the first air passage 413 and filter the air through the filter device 44. The air heating zone 416 is located above the air extraction zone 415, and the heating guide device 60 is installed in the air heating zone 416 to heat the passing air. The second air passage 417 is located above the air heating zone 416 and also above the first air passage 413 on the left. The left side of the second air passage 417 is also connected to the air supply passage 418, which connects the air heating zone 416, the first air passage 413, and the air supply passage 418. The recirculation valve 46 is a baffle that can rotate around its midpoint, and its rotation can be controlled by a motor or cylinder. The recirculation valve 46 is located between the second air passage 417 and the first air passage 413 to open or block the air flowing between them. The air supply passage 418 is connected to the air inlet passage 23, serving as the space through which air flows when it enters the vehicle's interior space 22.

[0036] In one embodiment, as shown in Figure 2, the air emission device 50 includes a base 51, a second housing 52, a water flow guide plate 53, a water collection area 54, a water curtain area 55, a water pumping device 56, and an exhaust device 57. The base 51 is constructed of rigid steel and sheet metal, and defines an exhaust area 511 within it. The exhaust area 511 communicates with the air outlet duct 24, serving as a space for air to circulate when the vehicle's interior space 22 is exhausted. The second housing 52 is also constructed of rigid steel and sheet metal, and defines an exhaust duct 521 within it, which communicates with the exhaust area 511. The water flow guide plate 53 is disposed between the exhaust duct 521 and the exhaust area 511, with an inclined upper surface and a longitudinally extending lower surface. The water collection area 54 is disposed at a predetermined distance below the water flow guide plate 53, forming a water curtain area 55 between them. The water pumping device 56 is a pumping unit located in the water collection area 54. The water pumping device 56 also includes a water pumping pipe 561, which connects from the water collection area 54 to the top of the water flow guide plate 53 to draw water from the water collection area 54 to the top of the water flow guide plate 53. The water flows down the surface above the water flow guide plate 53 back to the water collection area 54, forming a water curtain in the water curtain area 55. When air enters the exhaust area 511 through the regulating valve 43, it passes through the water curtain to filter paint particles from the air. The exhaust device 57 is an exhaust fan or blower located above the exhaust duct 521 to extract air from inside the exhaust duct 521 to the outside.

[0037] In one embodiment, as shown in Figure 3, the heating and airflow guiding device 60 is disposed in the air heating zone 416 and includes a flow divider 61, a main air duct 62, side air ducts 63, movable baffles 64, and a plurality of heat pipes 65. Two flow dividers 61 are provided, both arranged longitudinally. The two flow dividers 61 define one main air duct 62 and two side air ducts 63 in the air heating zone 416. The main air duct 62 is formed between the two flow dividers 61, and the two side air ducts 63 are respectively formed on the left or right side of the two flow dividers 61, with the diameter of the main air duct 62 being larger than the diameter of the side air ducts 63. Two movable baffles 64 are provided, each hinged to the lower end of the two flow dividers 61, and each movable baffle 64 can rotate about the hinge point as an axis. Each movable baffle 64 is also provided with a stop 641 below it. When the movable baffle 64 is not under force, each movable baffle 64 can be tilted and rest against the stop 641, so that the two movable baffles 64 can block the bottom of the main air duct 62, making the bottom of the main air duct 62 closed. When the movable baffle 64 is under force and rotates upward, each movable baffle 64 can rotate upward and approach the diversion baffle 61, making the bottom of the main air duct 62 open. Both side air ducts 63 are provided with a plurality of heat pipes 65. The heat pipes 65 are heat-conducting pipes with a plurality of fins (not shown) extending outward from the surface.

[0038] The operation of this dust-free spray painting booth is mainly divided into the "spray painting stage" and the "baking stage".

[0039] I. Painting Stage. As shown in Figures 1, 6A, and 6B, Figure 6A is a cross-sectional view of the air circulation device 40 and the heating guide device 60 of this invention during the painting stage, and Figure 6B is a cross-sectional view of the air exhaust device 50 of the dust-free spray booth 10 of this invention during the painting stage. This stage is used for vehicle painting operations, and its purpose is to maintain the cleanliness of the vehicle's storage space 22 and effectively remove paint mist and volatile organic compounds generated during the painting operation. In this stage: the multiple heat pipes 65 of the heating guide device 60 are not activated for heating, while the air intake device 42 is activated, drawing air from the external environment into the air intake area 411. The exhaust device 57 is activated, drawing air from the exhaust channel 521 to the outside. The regulating valve 43 is opened, allowing a large amount of air from the air intake area 411 to enter the first air channel 413. The circulation valve 46 is adjusted to block the flow between the second air channel 417 and the first air channel 413. At that time, air can enter the first air passage 413 through the air intake area 411, and then be drawn in by the blower 45. The air is filtered sequentially through the filter device 44, then flows through the air heating area 416, and then enters the second air passage 417 and the air supply passage 418. Due to the high airflow speed and large air volume, the airflow force pushes the movable baffle 64 to a position close to the diversion baffle 61, so that the bottom of the main air passage 62 is open. The airflow mainly flows through the main air passage 62, and some can flow through the side air passage 63, bypassing the multiple heat pipes 65 to ensure the supply of room temperature air. The air is sent into the air intake passage 23 through the air supply passage 418, and enters the vehicle compartment 22 after passing through the air intake filter structure 231. The paint mist air in the vehicle compartment 22 is guided downward and enters the air outlet passage 24 through the bottom mesh structure. After being initially filtered by the air outlet filter structure 241, the air enters the exhaust area 511. Next, the air flows through the water curtain area 55, where the air exhaust device 50 uses the water curtain to adsorb the paint adhering to the air and knock it down into the water collection area 54. Finally, the purified air enters the exhaust duct 521 and is then extracted to the external environment by the exhaust device 57.

[0040] II. Baking Stage. As shown in Figures 7A and 7B, Figure 7A is a cross-sectional view of the air circulation device 40 and heating guide device 60 of this invention during the baking stage, and Figure 7B is a cross-sectional view of the air exhaust device 50 of the dust-free spray booth 10 of this invention during the baking stage. This stage is used for vehicle baking operations. The purpose of this stage is to use controlled hot air to accelerate the drying of the paint surface and maintain heat energy to improve efficiency. In this stage: the multiple heat pipes 65 of the heating guide device 60 are activated to heat. The air intake device 42 is activated, drawing air from the external environment into the air intake area 411. The exhaust device 57 is also activated, drawing air from the exhaust duct 521 to the outside. The regulating valve 43 is closed, allowing air from the intake zone 411 to enter the first air passage 413 only through the gap. The air in the first air passage 413 is then drawn in by the blower 45, filtered sequentially by the filter device 44, and then flows through the air heating zone 416 before entering the second air passage 417 and the air supply passage 418. The circulation valve 46 is turned open, connecting the second air passage 417 with the first air passage 413, establishing an internal circulation path. Due to the restricted air intake, the airflow velocity is significantly reduced, resulting in a light breeze. Under low-speed airflow conditions, the movable baffle 64 tilts against the abutment 641 due to gravity, blocking the area below the main air duct 62. At this time, the airflow is guided to the two side air ducts 63, forced to flow through the multiple heat pipes 65 installed therein, and undergoes efficient heat exchange through the fins on the surface of the heat pipes 65, rapidly heating the air. At this time, a portion of the heated air returns to the first air channel 413 through the second air channel 417 via the circulation valve 46, and is then repeatedly drawn in by the blower 45, causing the heated air to continuously circulate inside the first housing 41. It is constantly reheated by the heating guide device 60, thereby increasing and maintaining the set temperature within the vehicle compartment 22. Another portion of the heated air enters the air supply channel 418 and the air inlet channel 23 sequentially through the second air channel 417. The hot air enters the vehicle compartment 22, providing baking heat. The hot air enters the exhaust channel 24 through the mesh structure at the bottom of the vehicle compartment 22. After preliminary filtration by the exhaust filter structure 241, the air enters the exhaust area 511. Next, the air flows through the water curtain area 55, where the air exhaust device 50 uses the water curtain to adsorb paint adhering to the air and knock it down into the water collection area 54. Finally, the purified air enters the exhaust channel 521 and is then drawn out to the external environment by the exhaust device 57.

[0041] In summary, the dust-free spray painting booth provided in this invention has the following advantages compared to other conventional technologies: 1. Optimized heating flow and component protection: Through the structural design of the flow divider 61 and movable baffle 64 in the heating flow device 60, the airflow can automatically bypass the multiple heat pipes 65 during the high-speed painting stage, effectively preventing the airflow from impacting and damaging the heat pipes. 2. Improved heat exchange efficiency: During the low-speed airflow baking stage, the movable baffle 64 automatically or in a controlled manner blocks the main air duct 62, forcing the airflow to be guided to the side air duct 63, so that it flows completely through the fins (not shown) on the surface of the multiple heat pipes 65, greatly improving the heat exchange contact area and efficiency, and accelerating the generation of hot air. 3. Efficiency of Entrance and Exit Operation: The roller door device 30 controls the rotation of the roller 32 via the drive device 33, enabling the rapid raising and lowering of the door panel 34, significantly improving the convenience and efficiency of vehicles entering and exiting the vehicle storage space 22. External Operation Visualization: The door panel 34 includes a transparent panel 341, allowing operators to observe the painting or baking process inside the vehicle storage space 22 from the outside without opening the door. 4. Paint Filtration and Environmental Protection: The air emission device 50 ensures that the air discharged during the painting stage can effectively filter and adsorb paint when passing through the water curtain zone 55, reducing environmental pollution.

[0042] The embodiments disclosed above are merely preferred embodiments of this invention and are not intended to limit the invention. Details disclosed in some embodiments of this invention are necessary for clarity in the specification, and those skilled in the art should understand that these details are not essential and should not limit the invention. Any equivalent changes or modifications made by those skilled in the art, after understanding the foregoing technical features and embodiments of this invention and without departing from the spirit and scope of this invention, are still within the scope of this invention, and the patent protection scope of this invention shall be determined by the claims appended to this specification.

[0043] 10: Dust-free spray painting booth 20: The main body of the computer room 21: Server room exterior 22: Vehicle storage space 23: Air Inlet Channel 231: Inlet air filtration structure 24: Air outlet duct 241: Air outlet filter structure 25: Vehicle entrances and exits 26: Personnel entrances and exits 27: Upper module of the computer room 271: Supporting Frame 272: Wall panel 273: Lighting Fixtures 30: Roller door assembly 31: Track 311: Vertical section 312: Spiral section 32: Scroll 33: Drive unit 34: Door panel 341: Plate 342: Perspective Zone 40: Air circulation device 41: First shell 411: Air Intake Area 412: Air passage control area 413: First Air Passage 414: Air Filtration Zone 415: Air Extraction Area 416: Air Heating Zone 417: Second Air Passage 418: Air Supply Channel 42: Air intake device 43: Adjusting valve 44: Filtration device 45: Blower 46: Circulation valve 50: Air emission device 51: Base 511: Ventilation Area 52: Second shell 521: Exhaust duct 53: Water flow guide plate 54: Catchment Area 55: Water Curtain Area 56: Pumping device 561: Water pump pipe 57: Exhaust system 60: Heating and diversion device 61: Diversion baffle 62: Main air duct 63: Side air duct 64: Movable baffle 641: Supporting Item 65: Complex heat pipes

Claims

1. A dust-free spray painting booth, comprising: a machine room body, including a machine room shell, a vehicle storage space, an air inlet duct, an air outlet duct, and a vehicle entrance / exit, the machine room shell defining the vehicle storage space, the air inlet duct, the air outlet duct, and the vehicle entrance / exit, the vehicle storage space being for accommodating vehicles, personnel, and various tools, the air inlet duct being formed and communicating with the upper part of the vehicle storage space, the air outlet duct being formed and communicating with the lower part of the vehicle storage space, and the vehicle entrance / exit being formed at the front side of the vehicle storage space; and a roller door device disposed at the vehicle entrance / exit. An air circulation device includes a first housing, an air inlet device, a regulating valve, a filter device, a blower, and a circulation valve. The first housing defines an air inlet area, an air channel regulating area, a first air channel, an air filtration area, an air extraction area, an air heating area, a second air channel, and an air supply channel. The air inlet device is located in the air inlet area, which is situated to the right of the air channel regulating area. The regulating valve is located in the air channel regulating area, the first air channel is situated to the left of the air channel regulating area, and the air filtration area is situated below the first air channel. The filter device is located in the air filtration zone. The air extraction zone is located on the lower left side of the first air channel. The blower is located in the air extraction zone. The blower is used to draw in air from the air filtration zone and filter the air through the filter device. The air heating zone is located above the air filtration zone. The second air channel is located above the air heating zone and also on the upper left side of the first air channel. The left side of the second air channel is connected to the air supply channel. The circulation valve is located between the second air channel and the first air channel. The air supply channel is connected to the air inlet channel. An air exhaust device includes a base, a second housing, a water flow guide plate, a water collection area, a water curtain area, a pumping device, and an exhaust device. The base defines an exhaust area that is connected to an air outlet channel. The second housing defines an exhaust channel that is connected to the exhaust area. The water flow guide plate is disposed between the exhaust channel and the exhaust area. The water collection area is disposed at a predetermined distance below the water flow guide plate, forming the water curtain area between the water flow guide plate and the water collection area. The pumping device is disposed in the water collection area and includes a pumping pipe that connects from the water collection area to the top of the water flow guide plate. The exhaust device is disposed above the exhaust channel for extracting air from inside the exhaust channel to the outside.A heating and airflow guiding device is provided in the air heating zone, comprising a flow divider, a main air duct, a side air duct, a movable baffle, and a plurality of heat pipes. The flow divider defines one main air duct and two side air ducts in the air heating zone. The main air duct is formed between the flow dividers, and the diameter of the main air duct is larger than the diameter of the side air ducts. The movable baffle is hinged to the lower end of the flow divider, and a stop member is provided below the movable baffle. The heat pipes are all disposed within the side air ducts. When the movable baffle is in the first position, it rests against the abutment to block the area below the main air duct, thus closing the area below the main air duct. When the movable baffle is in the second position, it is close to the diversion baffle, thus opening the area below the main air duct.

2. As in request item 1, the dust-free spray painting booth, wherein the air inlet duct extends upward from the top surface of the vehicle housing space, the air inlet duct and the vehicle housing space are separated by a mesh structure, and an air inlet filter structure is provided between the air inlet duct and the vehicle housing space.

3. As in request item 1, the dust-free spray painting booth, wherein the air outlet duct extends downward from the bottom surface of the vehicle housing space, the air outlet duct and the vehicle housing space are separated by a mesh structure, and an air outlet filter structure is provided between the air outlet duct and the vehicle housing space.

4. As in request item 1, a dust-free spray painting booth, wherein the outer shell of the booth defines a personnel entrance / exit, which is formed on the side of the vehicle storage space.

5. As in claim 1, the dust-free spray painting booth, wherein the rolling door device includes a track, a roller, a drive unit, and a door panel. The track is arranged in pairs on both sides of the vehicle entrance / exit, each track including a vertical portion and a spiral portion. The vertical portion extends upward along the vertical walls on both sides of the vehicle entrance / exit. The spiral portion is connected to the upper end of the vertical portion. The roller is located on one side of the spiral portion. The drive unit is located at one end of the roller. The door panel includes a plurality of plates that are continuously hinged to each other. The door panel is provided with a roller, which is connected to the roller through a connector.

6. As requested in item 5, a dust-free spray painting booth, wherein the door panel has a transparent area.

7. The dust-free spray painting booth as requested in item 1, wherein the first shell system is mounted on the base.

8. As in request item 1, the dust-free spray painting booth, wherein the surface of the water flow guide plate is inclined at the top and extends longitudinally at the bottom.

9. As in claim 1, a dust-free spray painting booth, wherein the upper part of the booth body is integrated into a plurality of upper booth modules, which are mounted across the upper part of the booth body and arranged adjacent to each other.

10. As claimed in item 9, a dust-free spray painting booth, wherein each upper module of the booth includes a support frame, a plurality of wall panels and a plurality of lighting fixtures, the support frame being horizontally positioned above the booth body, the wall panels and an air inlet filter structure being disposed within the support frame, and the wall panels being located on the left and right sides of the air inlet filter structure, and the lighting fixtures being mounted on the wall panels.

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