Drying oven device capable of recycling hot air

Abstract

The utility model relates to a drying oven of printing equipment, in particular to a drying oven device capable of recycling hot air, which comprises a first drying oven assembly, the first drying oven assembly comprises a first drying chamber and a first hot air chamber, the first drying chamber is provided with a first air inlet and a first air outlet, and the first hot air chamber is provided with a second air inlet and a second air outlet. The first drying oven assembly comprises a first drying chamber and a first hot air chamber, the first air inlet is communicated with the first hot air chamber, the second drying oven assembly comprises a second drying chamber and a second hot air chamber, the second drying chamber is provided with a second air inlet, and the second hot air chamber is connected with the first air outlet and the second air inlet. The first hot air chamber and the second hot air chamber are each provided with a fan and a heating piece, the drying oven device is designed in a segmented mode, the second hot air chamber takes hot air from the first air outlet of the first drying chamber, the temperature of air is higher than that of air at the room temperature, the needed temperature can be achieved through slight heating, and energy consumption is lower.

Description

Technical Field

[0001] This utility model relates to an oven for printing equipment, and more particularly to an oven device that utilizes hot air circulation. Background Technology

[0002] Existing printing equipment ovens use centrifugal fans to blow hot air into the oven shell through a heating chamber. The hot air is then evenly distributed to various nozzles through channels in the oven, allowing the hot air to directly blow onto the substrate for rapid drying. However, the hot air after drying is not collected and reused, especially for drying long pieces of paper, resulting in high energy consumption. Utility Model Content

[0003] In view of the technical problems existing in the background art, the present invention aims to provide a hot air recycling oven device, wherein the second oven assembly draws hot air from the first oven assembly to reduce energy consumption.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: the oven device for hot air circulation includes a first oven assembly, the first oven assembly includes a first drying chamber and a first hot air chamber, the first drying chamber is provided with a first air inlet and a first air outlet, the first air inlet is connected to the first hot air chamber, and the device also includes a second oven assembly, the second oven assembly includes a second drying chamber and a second hot air chamber, the second drying chamber is provided with a second air inlet, the second hot air chamber is connected to the first air outlet and the second air inlet, and both the first hot air chamber and the second hot air chamber are equipped with a fan and a heating element.

[0005] In this design, the oven unit is designed in sections. The second hot air chamber draws hot air from the first air outlet of the first drying chamber. The air temperature is higher than that of room temperature gas, and it can reach the required temperature with slight heating. The energy consumption is lower, and the hot air flow rate is fast, making it easy to be drawn away by the fan in the second hot air chamber.

[0006] Preferably, the second oven assembly further includes a second return air chamber, and the second drying chamber is also provided with a second air outlet. The first air outlet, the second air outlet and the second hot air chamber are all connected to the second return air chamber.

[0007] In this scheme, the second hot air chamber draws air from the second air outlet of the second drying chamber through the second return air chamber to supplement the air volume. Moreover, during the drying process, the temperature of the gas in the second drying chamber is higher than the room temperature, which saves more electricity.

[0008] Preferably, the first oven assembly further includes a first return air chamber, and the first drying chamber is also provided with a third air outlet, the first return air chamber connecting the third air outlet and the first hot air chamber.

[0009] In this scheme, the first return air chamber and the second return air chamber are independent of each other to avoid interference between the first hot air chamber and the second hot air chamber. The first hot air chamber draws air from the third air outlet through the first return air chamber. During the drying process, the temperature of the gas in the first drying chamber is higher than the room temperature, which saves more electricity.

[0010] Preferably, a radiator is connected between the second return air chamber and the second hot air chamber, and between the first return air chamber and the first hot air chamber, and the heating element is disposed on the air inlet side of the fan.

[0011] In this solution, the radiator controls the temperature of the circulating hot air to prevent the hot air temperature from being too high when directly blown onto the substrate after heating.

[0012] Preferably, both the first hot air chamber and the second hot air chamber are provided with air supply ports, the air supply ports are connected to the air supply chambers, and the air supply chambers are equipped with baffles.

[0013] In this scheme, the degree to which the wind deflector blocks the passage is adjusted by moving the wind deflector, thereby controlling the amount of air passing through the air supply chamber.

[0014] Preferably, both the first drying chamber and the second drying chamber are provided with a fourth air outlet, the make-up air chamber is connected to the external environment and the fourth air outlet respectively, and there are two baffles, which are rotatably configured.

[0015] In this scheme, the corresponding hot air chamber draws low-temperature air from the external environment and the corresponding drying chamber, which can both supplement the air volume and regulate the temperature.

[0016] Preferably, both the first drying chamber and the second drying chamber include a shell, and guide rollers are arranged inside the shell. The number of guide rollers is at least four. The shell is provided with an opening for material to pass through. The guide rollers are equipped with air nozzles. The air nozzles are provided with air outlets. The number of air outlets is two. The air outlets are connected to corresponding air inlets.

[0017] In this scheme, the substrate is wrapped around the guide roller through an opening, and hot air is blown directly onto the substrate through the air nozzle. The number of air nozzles is increased, and compared with a single air nozzle, the air nozzles are narrower, the air speed is increased, and the drying effect is better.

[0018] Preferably, the housing is further provided with an exhaust pipe, which includes a horizontal section and a vertical section that are connected. The horizontal section is arranged between adjacent guide rollers and has air inlets. The vertical section has an exhaust outlet, which is located at a corresponding air outlet and is smaller than the corresponding air outlet.

[0019] In this scheme, the hot air blowing directly onto the substrate reaches the exhaust port through the air inlet, allowing the corresponding hot air chamber to accurately draw air. The high air speed makes it easier for the fan to draw the air away. The exhaust port is smaller than the outlet, and the outlet can also draw air from the drying chamber.

[0020] Preferably, the housing is provided with an installation plate, the installation plate is connected to the housing, the air nozzle is disposed below the installation plate, an inner box is disposed above the installation plate, the inlet of the inner box is connected to the corresponding air inlet, the outlet of the inner box is connected to the air nozzle, and the installation plate is provided with air outlets.

[0021] In this design, the inner chamber distributes hot air to the nozzles, and the air vents allow gas to pass through.

[0022] Preferably, the inner box is provided with a guide plate, the guide plate has an inclined guide surface, and the guide plate is located below the inlet of the inner box.

[0023] In this design, high-speed hot air enters the inner chamber and hits the deflector plate, then flows away along the deflector plate's direction.

[0024] The beneficial effects of this invention are as follows: the drying oven is designed in sections, and the second hot air chamber draws hot air from the first air outlet of the first drying chamber. This hot air is at a higher temperature than room temperature, requiring only slight heating to reach the desired temperature, resulting in lower energy consumption. Furthermore, the hot air flows quickly and is easily drawn away by the fan in the second hot air chamber. Therefore, this invention has substantial features and represents a significant advancement compared to existing technologies. Attached Figure Description

[0025] The following description, in conjunction with the accompanying drawings, details the embodiments and working principles of this utility model.

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0027] Figure 2 This is a three-dimensional structural diagram of the first drying chamber and the second drying chamber in this utility model.

[0028] Figure 3 This is a bottom view of the first hot air chamber, the first return air chamber, and the make-up air chamber in this utility model.

[0029] Figure 4 This is a cross-sectional view of the first hot air chamber and the make-up air chamber in this utility model.

[0030] Figure 5 This is a bottom view of the second hot air chamber, the second return air chamber, and the make-up air chamber in this utility model.

[0031] Figure 6 This is a three-dimensional structural diagram of the mounting plate and inner box in this utility model.

[0032] Figure 7 This is a three-dimensional structural diagram of the guide roller and exhaust pipe in this utility model.

[0033] Figure 8 This is a cross-sectional view of the inner box and the air nozzle in this utility model.

[0034] Figure 9 This is a schematic diagram of the synchronous belt and synchronous pulley in this utility model.

[0035] In the diagram: 1. First drying oven assembly; 2. First drying chamber; 3. First hot air chamber; 4. First air outlet; 5. First air inlet; 6. Second drying oven assembly; 7. Second drying chamber; 8. Second hot air chamber; 9. Second air inlet; 10. Fan; 11. Heating element; 12. Second return air chamber; 13. Second air outlet; 14. First return air chamber; 15. Third air outlet; 16. Radiator; 17. Make-up air inlet; 18. Make-up air chamber; 19. 20. Wind deflector; 21. Fourth air outlet; 22. Housing; 23. Guide roller; 24. Opening; 25. Nozzle; 26. Air outlet; 27. Exhaust pipe; 28. Horizontal section; 29. ​​Vertical section; 30. Air inlet; 31. Exhaust outlet; 32. Mounting plate; 33. Inner box; 34. Air passage; 35. Guide plate; 36. Synchronous pulley; 37. Synchronous belt; 38. Pressure roller; 39. Upper shell; 40. Lower shell; 41. Cylinder; 42. Guide column; 43. Guide block. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the implementation of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0037] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0038] In the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0039] See appendix Figure 1-9In an embodiment of this invention, a hot air recycling oven device includes a first oven assembly 1. The first oven assembly 1 includes a first return air chamber 14, a first drying chamber 2, and a first hot air chamber 3. The first drying chamber 2 is provided with a third air outlet 15, a first air inlet 5, and a first air outlet 4. The first air inlet 5 is connected to the first hot air chamber 3. The first return air chamber 14 is connected to the third air outlet 15 and the first hot air chamber 3.

[0040] The oven also includes a second oven assembly 6, which includes a second return air chamber 12, a second drying chamber 7, and a second hot air chamber 8. The second drying chamber 7 is provided with a second air inlet 9 and a second air outlet 13. The second hot air chamber 8 is connected to the first air outlet 4 and the second air inlet 9. The first hot air chamber 3 and the second hot air chamber 8 are both equipped with a fan 10 and a heating element 11. The first air outlet 4, the second air outlet 13, and the second hot air chamber 8 are all connected to the second return air chamber 12.

[0041] A radiator 16 is connected between the second return air chamber 12 and the second hot air chamber 8, and between the first return air chamber 14 and the first hot air chamber 3. The heating element 11 is located on the air inlet side of the fan 10. Both the first hot air chamber 3 and the second hot air chamber 8 are provided with a makeup air inlet 17. The makeup air inlet 17 is connected to a makeup air chamber 18. The makeup air chamber 18 is equipped with a baffle plate 19. Both the first drying chamber 2 and the second drying chamber 7 are provided with a fourth air outlet 20. The makeup air chamber 18 is connected to the external environment and the fourth air outlet 20 respectively. There are two baffle plates 19, and the baffle plates 19 are rotatably set.

[0042] Both the first drying chamber 2 and the second drying chamber 7 include a shell 21. Guide rollers 22 are arranged inside the shell 21, with at least four guide rollers 22. The shell 21 has an opening 23 for material to pass through. Each guide roller 22 is equipped with a nozzle 24, and each nozzle 24 has two air inlets 25 connected to corresponding air inlets. The shell 21 also includes an exhaust pipe 26, which comprises a horizontal section 27 and a vertical section 28. The horizontal section 27 is positioned between adjacent guide rollers 22 and has air inlets 29 distributed within it. The vertical section 28... Section 28 is provided with an exhaust port 30, which is located at the corresponding air outlet and is smaller than the corresponding air outlet. The housing 21 is provided with an installation plate 31, which is connected to the housing 21. The nozzle 24 is located below the installation plate 31. An inner box 32 is provided above the installation plate 31. The inlet of the inner box 32 is connected to the corresponding air inlet, and the outlet of the inner box 32 is connected to the nozzle 24. The installation plate 31 is provided with air outlets 33. The inner box 32 is provided with a guide plate 34, which has an inclined guide surface and is located below the inlet of the inner box 32.

[0043] In this embodiment, the first drying oven assembly 1 is defined as the first section, and the second drying oven assembly 6 is defined as the second section. Regarding the hot air circulation, in the first section, the suction force generated by the fan 10 causes the gas in the drying chamber to enter the return air chamber, then enter the hot air chamber for heating, and finally enter the drying chamber through the air inlet, forming an internal hot air circulation. In the second section, the suction force generated by the fan 10 causes the gas in the drying chamber of the previous section and this section to enter the return air chamber, then enter the hot air chamber for heating, and finally enter the drying chamber through the air inlet, forming an external hot air circulation between sections and an internal hot air circulation. On this basis, increasing the number of sections can accommodate substrates with a length of meters, and the energy-saving effect is more prominent. The structure of the rear heating element 11 can be simplified, and the required heating amount is reduced.

[0044] For temperature control, a radiator 16 is installed between the return air chamber and the heat sealing chamber to cool the circulating hot air once, so as to avoid the hot air temperature after heating in the hot air chamber being too high. The heating element 11 is specifically a W-shaped heating tube, which is a mature technology, and is installed on the air inlet side of the fan 10 (based on the characteristic that the air velocity at the air outlet of the fan 10 is higher than that at the air inlet, it can fully heat the hot air).

[0045] For air volume control, the make-up air chamber 18 is set up to supply air to the hot air chamber. During the hot air circulation process, the air volume will decrease. The make-up air chamber 18 draws air from both the drying chamber and the external environment. It mixes with the hot air circulating in the return air chamber and heats it into hot air of the same temperature. The baffle 19 can be flipped (driven by the handle) to change the size of the make-up air channel in the make-up air chamber 18 and control the make-up air volume.

[0046] During operation, the hot air blown out of the hot air chamber enters the inner box 32 and is distributed to each air nozzle 24 (the edges of the first air nozzle 24 in the first section and the last air nozzle 24 in the last section extend downward to form air guides, preventing the hot air from escaping from the openings 23 of the first and last sections of the shell 21). The hot air is blown directly onto the substrate through the air outlets 25 of the air nozzles 24. With the support of the guide rollers 22, the substrate will not wrinkle. The air inlet 29 of the exhaust pipe 26 directly draws away the hot air and sends it to the air outlet for circulation, achieving positional air intake.

[0047] Specifically, the fan 10 is a centrifugal fan 10, driven by a motor to rotate the fan blades, a mature technology. The heating element 11 is located inside the hot air chamber, and the fan 10 housing is part of the hot air chamber. The exhaust pipe 26 accurately transmits the suction force generated by the fan 10 to the guide rollers 22. The hot air blowing directly onto the printing substrate has a high speed and is easily sucked away by the fan 10 through the exhaust pipe 26. Two guide rollers 22 form a group, each group corresponding to one exhaust pipe 26, and each exhaust pipe 26 corresponding to one air outlet. In this embodiment, one exhaust pipe 26 participates in the internal circulation, and two exhaust pipes 26 participate in the external circulation. Except for the first section, the air volume in the return air chamber of other sections is sufficient. The exhaust pipes 26 and the housing 21 together form a... The air cavities are arranged in rows, with the vertical section 28 designed in a split manner to accommodate the opening and closing of the housing 21. The guide rollers 22 are arranged in an arc shape, with the ends connected to the synchronous pulleys 35. A synchronous belt 36 is wound around the synchronous pulleys 35, and the synchronous belt 36 is also equipped with a pressure roller 37 to control the tension. The synchronous belt 36 is also wound around the drive wheel, which is connected to the output shaft of the motor. The housing 21 is divided into an upper housing 38 and a lower housing 39, which are hinged together. A cylinder 40 is hinged to the upper housing 38, and the output end of the cylinder 40 is hinged to the lower housing 39. The cylinder 40 opens and closes the upper housing 38 and the lower housing 39. A guide post 41 and a guide block 42 are provided for guidance. The guide block 42 is hinged to the upper housing 38, and the guide post 41 is hinged to the lower housing 39.

[0048] In other alternative embodiments, the heating element 11 may be located on the air outlet side of the fan 10.

[0049] The above description represents the preferred embodiment of this utility model. It should be noted that the scope of protection of this utility model is not limited thereto. For those skilled in the art, various improvements, modifications, or equivalent substitutions can be made without departing from the equivalent inventive concept disclosed in this utility model, and these can also be considered as part of the scope of protection of this utility model.

Claims

1. A hot air circulating oven device, comprising a first oven assembly (1), the first oven assembly (1) comprising a first drying chamber (2) and a first hot air chamber (3), the first drying chamber (2) being provided with a first air inlet (5) and a first air outlet (4), the first air inlet (5) being connected to the first hot air chamber (3), characterized in that: It also includes a second drying oven assembly (6), which includes a second drying chamber (7) and a second hot air chamber (8). The second drying chamber (7) is provided with a second air inlet (9). The second hot air chamber (8) is connected to the first air outlet (4) and the second air inlet (9). The first hot air chamber (3) and the second hot air chamber (8) are both equipped with a fan (10) and a heating element (11).

2. The oven device for hot air circulation as described in claim 1, characterized in that: The second oven assembly (6) also includes a second return air chamber (12), and the second drying chamber (7) is also provided with a second air outlet (13). The first air outlet (4), the second air outlet (13) and the second hot air chamber (8) are all connected to the second return air chamber (12).

3. The oven device for hot air circulation as described in claim 2, characterized in that: The first oven assembly (1) further includes a first return air chamber (14), and the first drying chamber (2) is also provided with a third air outlet (15). The first return air chamber (14) is connected to the third air outlet (15) and the first hot air chamber (3).

4. The oven device for hot air circulation as described in claim 3, characterized in that: A radiator (16) is connected between the second return air chamber (12) and the second hot air chamber (8), and between the first return air chamber (14) and the first hot air chamber (3). The heating element (11) is located on the air inlet side of the fan (10).

5. The oven device for hot air circulation as described in claim 1, characterized in that: Both the first hot air chamber (3) and the second hot air chamber (8) are provided with air supply ports (17), and the air supply ports (17) are connected to the air supply chamber (18), which is equipped with a baffle plate (19).

6. The oven device for hot air circulation as described in claim 5, characterized in that: The first drying chamber (2) and the second drying chamber (7) are both provided with a fourth air outlet (20). The supplementary air chamber (18) is connected to the external environment and the fourth air outlet (20) respectively. There are two baffles (19), and the baffles (19) are rotatably set.

7. The oven device for hot air circulation as described in claim 1, characterized in that: Both the first drying chamber (2) and the second drying chamber (7) include a shell (21). Guide rollers (22) are arranged inside the shell (21). There are at least four guide rollers (22). The shell (21) is provided with an opening (23) for material to pass through. The guide rollers (22) are equipped with air nozzles (24). The air nozzles (24) are provided with air outlets (25). There are two air outlets (25). The air outlets (25) are connected to the corresponding air inlets.

8. The oven device for hot air circulation as described in claim 7, characterized in that: The housing (21) is also provided with an exhaust pipe (26), which includes a horizontal section (27) and a vertical section (28) that are connected. The horizontal section (27) is arranged between adjacent guide rollers (22). The horizontal section (27) is provided with air inlets (29). The vertical section (28) is provided with an exhaust port (30). The exhaust port (30) is located at the corresponding air outlet. The exhaust port (30) is smaller than the corresponding air outlet.

9. The oven device for hot air circulation as described in claim 7, characterized in that: The housing (21) is provided with an installation plate (31), which is connected to the housing (21). The nozzle (24) is located below the installation plate (31). An inner box (32) is provided above the installation plate (31). The inlet of the inner box (32) is connected to the corresponding air inlet, and the outlet of the inner box (32) is connected to the nozzle (24). Air vents (33) are distributed on the installation plate (31).

10. The oven apparatus for hot air circulation as described in claim 9, characterized in that: The inner box (32) is provided with a flow guide plate (34), which has an inclined flow guide surface and is located below the inlet of the inner box (32).

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