Drying oven and coating apparatus

Abstract

A drying oven (100) and a coating apparatus. The drying oven (100) comprises: an oven body (10), a gas flow channel (11) being formed within the oven body (10), the gas flow channel (11) being adapted to allow an object to be dried (200) to pass therethrough along a first direction, the gas within the gas flow channel (11) being adapted to flow along the first direction, and the gas flow channel (11) being configured such that, when the gas flows through the gas flow channel (11), the object to be dried (200) is suspended within the gas flow channel (11); and a heating device (20), the heating device (20) being disposed on the oven body (10) and being used to heat the object to be dried (200).

Description

Drying ovens and coating equipment

[0001] Cross-reference of related applications

[0002] This application is based on and claims priority to Chinese Patent Application No. 202411913029.9, filed on December 24, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of drying ovens, and more particularly to a drying oven and a coating apparatus having the drying oven. Background Technology

[0004] In related technologies, during the production of battery cells (e.g., current collectors), after the current collector coating and printing are completed, it needs to be heated in a drying oven to remove moisture from the wet film, making the current collector drier and more stable. Existing drying ovens use nozzles to blow hot air vertically towards the current collector for drying, which makes the current collector prone to shaking during the drying process. This results in uneven drying, cracking, and affects the product quality of the current collector. Furthermore, the shaking of the current collector during movement can easily cause the current collector tape to break, affecting the current collector production efficiency.

[0005] Furthermore, the hot air used to dry the collector is exhausted through the exhaust port of the drying oven. This exhaust carries away a significant portion of the heat, resulting in substantial heat loss and low energy utilization. Existing drying ovens require a hot air circulation system, leading to a large oven size, increased space requirements, and higher factory costs.

[0006] Application content

[0007] This application aims to at least partially address one of the technical problems in the related art.

[0008] Therefore, one objective of this application is to provide a drying oven that facilitates uniform drying of the current collector, reduces the risk of cracking, thereby improving the product quality of the current collector and increasing the production efficiency of the current collector.

[0009] In a first aspect, embodiments of this application provide a drying oven, comprising:

[0010] The oven body has a gas flow channel formed inside it. The gas flow channel is suitable for the object to be dried to pass through in a first direction. The gas in the gas flow channel is suitable for flowing in the first direction. The gas flow channel is configured to suspend the object to be dried in the gas flow channel when the gas flows through it.

[0011] A heating device is located in the oven body and is used to heat the object to be dried.

[0012] In the above technical solution, the gas flow channel is configured to suspend the object to be dried in the gas flow channel when the gas flows through it. This can stabilize the position of the object to be dried and reduce its vibration. Compared with the prior art, the risk of vibration of the object to be dried can be reduced during the drying process, which is conducive to the uniform drying of the object and reduces the risk of cracking. This is beneficial to improving the product quality of the object to be dried. In addition, it reduces the risk of tape breakage, which is beneficial to improving the production efficiency of the object to be dried.

[0013] Secondly, embodiments of this application also provide a coating apparatus, including the aforementioned drying oven.

[0014] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0015] Figure 1 is a schematic diagram of a drying oven according to an embodiment of this application;

[0016] Figure 2 is a schematic diagram of a drying oven according to an embodiment of this application from another angle;

[0017] Figure 3 is a front view of a drying oven according to an embodiment of this application;

[0018] Figure 4 is a side view of a drying oven according to an embodiment of this application;

[0019] Figure 5 is a cross-sectional view of section AA in Figure 4;

[0020] Figure 6 is a top view of a drying oven according to an embodiment of this application;

[0021] Figure 7 is a cross-sectional schematic diagram of a drying oven according to an embodiment of this application.

[0022] The reference numerals in the accompanying drawings are as follows: Drying oven 100; Oven body 10; Gas flow channel 11; Material passage 111; Inlet 1111; Outlet 1112; First gas flow channel 112; First gas flow channel inlet 1121; First gas flow channel outlet 1122; Second gas flow channel 113; Second gas flow channel inlet 1131; Second gas flow channel outlet 1132; Second inspection door 12; Heating device 20; Gas conveying device 30; Inlet flow channel 31; Main inlet flow channel 311; First inlet branch channel 312; Second inlet branch channel 313; Exhaust flow channel 32; Main exhaust flow channel 321; First exhaust branch channel 322; Second exhaust branch channel 323; First fan 33; Second fan 34; Inlet 35; Exhaust port 36; First chamber 37; First chamber body 371; Second chamber body 372; Third chamber body 373; Second chamber 38; Fourth chamber body 381; Fifth chamber body 382; Sixth chamber body 383; First inspection door 384; Third chamber 39; Gas filtration device 40; Heating mechanism reserved area 50; Negative pressure exhaust pipe 60; First exhaust pipe 61; Second exhaust pipe 62; Partition 70; Transparent part 71; First guide plate 80; Second guide plate 90; Observation window 91; Object to be dried 200. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0025] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, C and / or D can represent: C existing alone, C and D existing simultaneously, or D existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0028] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0029] In this application, "multiple" means two or more (including two).

[0030] In the battery cell coating production process, during the production of the object to be dried for the battery cell, for example, the object to be dried is the current collector, which needs to be dried.

[0031] In this application, the battery cell may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and the embodiments of this application are not limited to these. The battery cell may be cylindrical, flat, cuboid, or other shapes, etc., and the embodiments of this application are not limited to these. Battery cells are generally divided into three types according to their packaging method: cylindrical battery cells, square battery cells, and pouch battery cells, and the embodiments of this application are not limited to these.

[0032] A single battery cell includes a casing, electrode assembly, and electrolyte. The casing houses the electrode assembly and electrolyte. The electrode assembly consists of a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrode plates. The positive electrode includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector, while the uncoated positive current collector protrudes beyond the coated one, serving as the positive electrode tab. Taking a lithium-ion battery as an example, the positive current collector can be made of aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector, and the negative current collector without the negative active material layer protrudes from the one with the negative active material layer. The negative current collector without the negative active material layer serves as the negative electrode tab. The material of the negative current collector can be copper, and the negative active material can be carbon or silicon, etc. To ensure that a large current can be passed without melting, there are multiple positive electrode tabs stacked together, and there are multiple negative electrode tabs stacked together.

[0033] The separator can be made of PP (polypropylene) or PE (polyethylene), etc. Furthermore, the electrode assembly can be a wound structure or a stacked structure; the embodiments of this application are not limited to these.

[0034] In recent years, new energy vehicles have experienced rapid development. In the field of electric vehicles, battery cells, as the power source, play an irreplaceable and crucial role. As a core component of new energy vehicles, battery cells have high requirements for reliability.

[0035] In the production process of battery cells (such as current collectors), after the current collector coating and printing are completed, it needs to be heated in a drying oven to remove moisture from the wet film and make the current collector drier and more stable. Existing drying ovens use nozzles to blow hot air vertically towards the current collector for drying, which makes the current collector prone to shaking during the drying process. This results in uneven drying, cracking, and affects the product quality of the current collector. Furthermore, the shaking of the current collector during movement can easily cause the current collector tape to break, affecting the production efficiency of the current collector.

[0036] Based on the above considerations, to address the issue of vibration in the current collector during the drying process, a drying oven was designed after in-depth research. The oven includes: an oven body with a gas flow channel formed within it, suitable for the object to be dried to pass through in a first direction; the gas flow channel is configured to suspend the object in the gas flow channel as the gas flows through it; and a heating device located within the oven body for heating the object to be dried. By suspending the object in the gas flow channel as the gas flows through it, the position of the object can be stabilized, reducing vibration. Compared to existing technologies, this reduces the risk of vibration during the drying process, promotes uniform drying, reduces the risk of cracking, and thus improves product quality. Furthermore, it reduces the risk of belt breakage, thereby increasing production efficiency.

[0037] The following describes a drying oven 100 according to an embodiment of the present application with reference to Figures 1-7. The drying oven 100 is used to dry an object 200 to be dried, which may be a current collector.

[0038] As shown in Figures 1-7, the drying oven 100 according to an embodiment of this application includes: an oven body 10, a gas flow channel 11 formed inside the oven body 10, the gas flow channel 11 being adapted to allow an object 200 to be dried to pass through in a first direction, gas within the gas flow channel 11 being adapted to flow in the first direction, and the gas flow channel 11 being configured to suspend the object 200 to be dried in the gas flow channel 11 when the gas flows through the gas flow channel 11; and a heating device 20 disposed in the oven body 10, the heating device 20 being used to heat the object 200 to be dried.

[0039] The oven body 10 can be constructed as a metal box or a glass box, allowing the interior of the oven body 10 to be viewed. A gas flow channel 11 is formed inside the oven body 10. Gas can be blown into the gas flow channel 11, and gas can flow out of the gas flow channel 11. When gas is blown into the gas flow channel 11, it flows along the gas flow channel 11, and when it flows out of the gas flow channel 11, it carries away the water vapor generated by drying the object 200 inside the drying oven 100. The gas flow channel 11 can extend along a first direction, through which the object 200 passes and through the oven body 10. This application uses the drying oven 100 placed in the direction shown in Figure 5 as an example, where the first direction refers to the X direction in Figure 5. Along the first direction, gas can flow into the gas channel 11 from one end, and gas in the gas channel 11 can flow out of the gas channel 11 from the other end.

[0040] The heating device 20 is disposed within the oven body 10. The heating device 20 can be configured as a light-emitting heating device 20 or an electromagnetic heating device 20. The light-emitting heating device 20 can be an infrared lamp, an infrared plate, a UV lamp, etc., while the electromagnetic heating device 20 can be an electromagnetic heating plate, etc. The heating device 20 can be disposed inside the oven body 10. Compared to the drying oven 100 using nozzles to dry the object 200, the drying oven 100 of this application does not require a hot air circulation system, which helps to reduce the volume of the drying oven 100, reduce the space occupied by the drying oven 100, and reduce factory costs.

[0041] When the object to be dried 200 passes through the gas flow channel 11 along the first direction, it also flows along the second direction (Z direction in Figure 5). Both sides of the object to be dried 200 have gas flow channels 11, and the gas flowing into the gas flow channels 11 is at room temperature, which is more energy-efficient than hot air. When the gas flows along the first direction within the gas flow channels 11 on both sides of the object to be dried 200, it can suspend the object to be dried 200 within the gas flow channels 11, stabilizing its position and reducing its vibration. Compared with existing technologies, this reduces the risk of vibration during the drying process, promoting uniform drying and reducing the risk of cracking, thus improving product quality. Furthermore, the movement of the object to be dried 200 along the first direction reduces the risk of belt breakage, thereby improving production efficiency.

[0042] In the above technical solution, the gas flow channel 11 is configured to suspend the object to be dried 200 in the gas flow channel 11 when the gas flows through the gas flow channel 11. This can stabilize the position of the object to be dried 200 and reduce the shaking of the object to be dried 200. Compared with the prior art, the risk of shaking of the object to be dried 200 can be reduced during the drying process, which is conducive to the uniform drying of the object to be dried 200 and reduces the risk of cracking of the object to be dried 200, thereby improving the product quality of the object to be dried 200. In addition, the risk of belt breakage of the object to be dried 200 is reduced, which is conducive to improving the production efficiency of the object to be dried 200.

[0043] According to some embodiments of this application, as shown in FIG5, the gas flow channel 11 includes: an object channel 111, a first gas flow channel 112 and a second gas flow channel 113. Along the second direction, the object channel 111 is located between the first gas flow channel 112 and the second gas flow channel 113. The object channel 111 connects the first gas flow channel 112 and the second gas flow channel 113. The object channel 111 is adapted to be passed through by the object 200 to be dried. The first direction and the second direction are perpendicular.

[0044] The gas flow channel 11 includes an object channel 111, a first gas flow channel 112, and a second gas flow channel 113. The object channel 111, the first gas flow channel 112, and the second gas flow channel 113 are arranged along a second direction. The object channel 111 is located between the first gas flow channel 112 and the second gas flow channel 113, as shown in Figure 5. Along the second direction, the first gas flow channel 112 is located above the second gas flow channel 113. The object channel 111 is open at its end facing the first gas flow channel 112 and at its end facing the second gas flow channel 113, thus connecting the object channel 111 with the first gas flow channel 112 and the second gas flow channel 113. The object 200 to be dried passes through the object channel 111, thereby achieving the effect that both sides of the object 200 to be dried have gas flow channels 11, and thus, when the gas flows through the first gas flow channel 112 and the second gas flow channel 113, the object 200 to be dried is suspended in the gas flow channels 11.

[0045] In the above technical solution, along the second direction, the object channel 111 is located between the first gas flow channel 112 and the second gas flow channel 113, and the object channel 111 connects the first gas flow channel 112 and the second gas flow channel 113. When the object to be dried 200 passes through the object channel 111, the object to be dried 200 has the effect of having gas flow channels 11 on both sides. Then, when the gas flows through the first gas flow channel 112 and the second gas flow channel 113, the object to be dried 200 is suspended in the gas flow channels 11.

[0046] According to some embodiments of this application, as shown in FIG5, the object channel 111, the first gas flow channel 112, and the second gas flow channel 113 are parallel to each other.

[0047] In this configuration, along the first direction, the object channel 111, the first gas flow channel 112, and the second gas flow channel 113 are arranged parallel to each other, or the object channel 111, the first gas flow channel 112, and the second gas flow channel 113 are arranged approximately parallel to each other. After the object to be dried 200 passes through the object channel 111, when the gas flows through the first gas flow channel 112 and the second gas flow channel 113, it is beneficial to make the object to be dried 200 stably suspended, thereby further reducing the amount of shaking of the object to be dried 200.

[0048] In the above technical solution, the object channel 111, the first gas flow channel 112 and the second gas flow channel 113 are arranged in parallel to each other. When the gas flows through the first gas flow channel 112 and the second gas flow channel 113, it is beneficial to make the object to be dried 200 stably suspended, thereby further reducing the shaking of the object to be dried 200.

[0049] According to some embodiments of this application, as shown in FIG5, the gas flow direction in the first gas flow channel 112 is the same as the gas flow direction in the second gas flow channel 113. Alternatively, the gas flow direction in the first gas flow channel 112 is opposite to the gas flow direction in the second gas flow channel 113.

[0050] As shown in Figure 5, the gas flow direction in the first gas channel 112 is the same as that in the second gas channel 113. As an example, gas flows into the first gas channel 112 from its right end and out from its left end; similarly, gas flows into the second gas channel 113 from its right end and out from its left end. As another example, gas flows into the first gas channel 112 from its left end and out from its right end; similarly, gas flows into the second gas channel 113 from its left end and out from its right end.

[0051] Alternatively, the gas flow direction in the first gas channel 112 may be opposite to that in the second gas channel 113. As shown in Figure 5, as an example, gas flows into the first gas channel 112 through its right end and exits from its left end; gas flows into the second gas channel 113 through its left end and exits from its right end. As another example, gas flows into the first gas channel 112 through its left end and exits from its right end; gas flows into the second gas channel 113 through its right end and exits from its left end.

[0052] In the above technical solution, the gas flow direction in the first gas flow channel 112 is the same as the gas flow direction in the second gas flow channel 113, or the gas flow direction in the first gas flow channel 112 is opposite to the gas flow direction in the second gas flow channel 113, so that the object to be dried 200 is suspended in the gas flow channel 11 when the gas flows through the first gas flow channel 112 and the second gas flow channel 113.

[0053] According to some embodiments of this application, as shown in Figures 1, 2 and 5, the drying oven 100 further includes a gas conveying device 30, which is connected to both a first gas flow channel 112 and a second gas flow channel 113. The gas conveying device 30 is configured to allow gas to flow into or out of the first gas flow channel 112, and the gas conveying device 30 is also configured to allow gas to flow into or out of the second gas flow channel 113.

[0054] The drying oven 100 may further include: a gas conveying device 30, wherein a first gas channel 112 has a first gas channel inlet 1121 and a first gas channel outlet 1122, and the gas conveying device 30 is connected to both the first gas channel inlet 1121 and the first gas channel outlet 1122; when the gas conveying device 30 is working, gas flows into the first gas channel 112 through the first gas channel inlet 1121, and gas in the first gas channel 112 flows out of the first gas channel 112 through the first gas channel outlet 1122. A second gas channel 113 has a second gas channel inlet 1131 and a second gas channel outlet 1132, and the gas conveying device 30 is connected to both the second gas channel inlet 1131 and the second gas channel outlet 1132; when the gas conveying device 30 is working, gas flows into the second gas channel 113 through the second gas channel inlet 1131, and gas in the second gas channel 113 flows out of the first gas channel 112 through the second gas channel outlet 1132. As shown in Figure 5, along the first direction, this application will describe the first gas flow channel 112 with the right end as the first gas flow channel inlet 1121 and the left end as the first gas flow channel outlet 1122 as an example, and will also describe the second gas flow channel 113 with the right end as the second gas flow channel inlet 1131 and the left end as the second gas flow channel outlet 1132 as an example.

[0055] As an example, the gas delivery device 30 is configured as a blower, which is connected to both the first gas flow channel inlet 1121 and the second gas flow channel inlet 1131. By blowing air into the first gas flow channel 112 and the second gas flow channel 113 through the blower, the gas in the first gas flow channel 112 flows in a first direction, and the gas in the second gas flow channel 113 flows in the first direction, so that the gas in the first gas flow channel 112 flows out of the first gas flow channel 112 through the first gas flow channel outlet 1122, and the gas in the second gas flow channel 113 flows out of the second gas flow channel 113 through the second gas flow channel outlet 1132.

[0056] As another example, the gas delivery device 30 is configured as an exhaust fan, which is connected to both the first gas flow channel outlet 1122 and the second gas flow channel outlet 1132. By operating the exhaust fan, gas is drawn from the first gas flow channel inlet 1121 into the first gas flow channel 112, causing the gas in the first gas flow channel 112 to flow in a first direction, and gas is drawn from the second gas flow channel inlet 1131 into the second gas flow channel 113, causing the gas in the second gas flow channel 113 to flow in the first direction, thereby causing the gas in the first gas flow channel 112 to flow out of the first gas flow channel 112 through the first gas flow channel outlet 1122, and causing the gas in the second gas flow channel 113 to flow out of the second gas flow channel 113 through the second gas flow channel outlet 1132.

[0057] In the above technical solution, the gas conveying device 30 is configured to allow gas to flow into or out of the first gas flow channel 112, and the gas conveying device 30 is also configured to allow gas to flow into or out of the second gas flow channel 113. Using one gas conveying device 30 can meet the gas flow requirements in the first gas flow channel 112 and the second gas flow channel 113, which helps to simplify the structure of the drying oven 100, thereby reducing the structural complexity of the drying oven 100 and facilitating the production and manufacturing of the drying oven 100.

[0058] According to some embodiments of this application, as shown in Figures 1, 2 and 7, the gas delivery device 30 has an inlet flow channel 31, an exhaust flow channel 32, a first fan 33 and a second fan 34. The inlet flow channel 31 is connected to both the first gas flow channel 112 and the second gas flow channel 113. The first fan 33 is configured to allow gas to flow into the first gas flow channel 112 and the second gas flow channel 113 through the inlet flow channel 31. The exhaust flow channel 32 is connected to both the first gas flow channel 112 and the second gas flow channel 113. The second fan 34 is configured to allow gas to flow out of the first gas flow channel 112 and the second gas flow channel 113.

[0059] The gas delivery device 30 includes an inlet flow channel 31, an exhaust flow channel 32, a first fan 33, and a second fan 34. The inlet flow channel 31 is connected to both the first gas flow channel 112 and the second gas flow channel 113. As an example, the inlet flow channel 31 is directly connected to both the first gas flow channel 112 and the second gas flow channel 113, thus enabling communication between them. As another example, the inlet flow channel 31 is indirectly connected to both the first gas flow channel 112 and the second gas flow channel 113 via a connecting pipe. The exhaust flow channel 32 is also connected to both the first gas flow channel 112 and the second gas flow channel 113. As an example, the exhaust flow channel 32 is directly connected to both the first gas flow channel 112 and the second gas flow channel 113, thus enabling communication between them. As yet another example, the exhaust flow channel 32 is indirectly connected to both the first gas flow channel 112 and the second gas flow channel 113 via a connecting pipe.

[0060] The first fan 33 can be a circulating fan. The first fan 33 can be installed in the air inlet channel 31. When the first fan 33 is working, the first fan 33 can make the gas outside the drying oven 100 flow into the air inlet channel 31. The gas flowing into the air inlet channel 31 flows into the first gas channel 112 and the second gas channel 113 under the action of the first fan 33, so that the gas flows in the first gas channel 112 and the second gas channel 113 in the first direction.

[0061] The second fan 34 can be an exhaust fan. The second fan 34 can be set at the exhaust port 36 of the exhaust channel 32. When the second fan 34 is working, the gas in the first gas channel 112 and the gas in the second gas channel 113 can flow into the exhaust channel 32. The gas flowing into the exhaust channel 32 can flow out of the drying oven 100 through the exhaust port 36 of the exhaust channel 32.

[0062] In the above technical solution, by setting the air inlet channel 31, the exhaust channel 32, the first fan 33 and the second fan 34, the effect of gas flowing into the first gas channel 112 and the second gas channel 113 can be achieved, and the effect of gas flowing out of the first gas channel 112 and the second gas channel 113 can also be achieved, which is conducive to achieving the effect of suspending the object to be dried 200 in the gas channel 11.

[0063] According to some embodiments of this application, as shown in Figures 1, 2 and 7, the air inlet channel 31 has an air inlet 35, which connects the air inlet channel 31 to the external environment of the drying oven 100, and the exhaust channel 32 has an exhaust outlet 36, which connects the exhaust channel 32 to the external environment of the drying oven 100.

[0064] The air intake duct 31 is connected to the air inlet 35, which in turn connects the air intake duct 31 to the external environment of the drying oven 100. When the first fan 33 is working, gas can flow into the air intake duct 31 through the air inlet 35, thus meeting the air supply requirements to the first gas flow duct 112 and the second gas flow duct 113. The exhaust duct 32 is connected to the exhaust port 36, which in turn connects the exhaust duct 32 to the external environment of the drying oven 100. When the second fan 34 is working, gas in the first gas flow duct 112 and the second gas flow duct 113 can be discharged from the drying oven 100 through the exhaust duct 32 and the exhaust port 36, thus meeting the exhaust requirements of the first gas flow duct 112 and the second gas flow duct 113. Furthermore, when the gas in the first gas flow channel 112 and the second gas flow channel 113 flows out from the exhaust port 36, it can carry away the water vapor generated by drying the object 200 inside the drying oven 100, thereby improving the drying efficiency of the object 200.

[0065] In the above technical solution, the air inlet 35 connects the air intake channel 31 to the external environment of the drying oven 100. When the first fan 33 is working, gas can flow into the air intake channel 31 through the air inlet 35, thus meeting the air supply requirements to the air intake channel 31 and consequently, the air supply requirements to the first gas channel 112 and the second gas channel 113. The exhaust port 36 connects the exhaust channel 32 to the external environment of the drying oven 100. When the second fan 34 is working, the gas in the first gas channel 112 and the second gas channel 113 can be discharged from the drying oven 100 through the exhaust channel 32 and the exhaust port 36, meeting the exhaust requirements of the first gas channel 112 and the second gas channel 113. Furthermore, when the gas in the first gas channel 112 and the second gas channel 113 flows out from the exhaust port 36, it can carry away the water vapor generated by drying the object 200 inside the drying oven 100, thereby improving the drying efficiency of the object 200.

[0066] According to some embodiments of this application, at least one of the air inlet 35 and the exhaust outlet 36 is provided with an on / off valve.

[0067] As an example, the air inlet 35 is equipped with an on / off valve. As another example, the exhaust port 36 is equipped with an on / off valve. As yet another example, both the air inlet 35 and the exhaust port 36 are equipped with on / off valves. This application uses the example of both the air inlet 35 and the exhaust port 36 being equipped with on / off valves for illustration. The on / off valve can be a mechanical valve, which can be manually opened or closed by the user. The on / off valve can also be an electric valve, which can be opened or closed electrically. When the object to be dried 200 is being dried in the drying oven 100, both the on / off valves at the air inlet 35 and the exhaust port 36 are open, allowing gas to flow into the first gas channel 112 and the second gas channel 113, and also allowing gas in the first gas channel 112 and the second gas channel 113 to flow out of the drying oven 100. When the drying oven 100 is not in use, closing the valves at the air inlet 35 and the exhaust outlet 36 can reduce the risk of objects (dust, animals, etc.) from the external environment entering the drying oven 100 through the air inlet 35 and the exhaust outlet 36. This helps to keep the drying oven 100 clean, reduces the risk of objects from the external environment affecting the operation of the drying oven 100, and helps the drying oven 100 meet the usage requirements.

[0068] In the above technical solution, at least one of the air inlet 35 and the exhaust outlet 36 is provided with an on / off valve. The on / off valve can be selectively opened or closed. When the drying oven 100 is drying the object 200 to be dried, the on / off valve is opened, allowing gas to flow into the first gas flow channel 112 and the second gas flow channel 113, or allowing gas in the first gas flow channel 112 and the second gas flow channel 113 to flow out of the drying oven 100. When the drying oven 100 is not in use, the on / off valve is closed, which can reduce the risk of objects in the external environment entering the drying oven 100 through the air inlet 35 and the exhaust outlet 36. This helps to keep the drying oven 100 clean, reduces the risk of objects in the external environment affecting the operation of the drying oven 100, and helps the drying oven 100 meet the usage requirements.

[0069] According to some embodiments of this application, as shown in Figures 2, 5 and 7, the intake passage 31 includes: an intake main passage 311, a first intake branch passage 312 and a second intake branch passage 313. The first intake branch passage 312 connects the intake main passage 311 and the first gas passage 112, and the second intake branch passage 313 connects the intake main passage 311 and the second gas passage 113.

[0070] The intake channel 31 may include an intake main channel 311, a first intake branch channel 312, and a second intake branch channel 313. One end of the intake main channel 311 is connected to the intake port 35, and the other end of the intake main channel 311 is connected to the first intake branch channel 312. The first intake branch channel 312 is connected to the first gas flow channel 112, thereby connecting the first intake branch channel 312 to the intake main channel 311 and the first gas flow channel 112, so that the gas flowing in from the intake port 35 can flow into the first gas flow channel 112 through the intake main channel 311 and the first intake branch channel 312. The other end of the main intake channel 311 is also connected to the second intake branch channel 313, which is connected to the second gas flow channel 113. This allows the second intake branch channel 313 to connect the main intake channel 311 and the second gas flow channel 113, so that the gas flowing in from the intake port 35 can flow into the second gas flow channel 113 through the main intake channel 311 and the second intake branch channel 313.

[0071] In the above technical solution, the first intake diversion channel 312 connects the main intake channel 311 and the first gas channel 112, and the second intake diversion channel 313 connects the main intake channel 311 and the second gas channel 113. This can achieve the effect of guiding gas into the first gas channel 112 and the second gas channel 113. Furthermore, by setting up a main intake channel 311, gas can be guided into the first intake diversion channel 312 and the second intake diversion channel 313, which helps to simplify the structure of the intake channel 31, thereby simplifying the structure of the gas delivery device 30 and reducing the manufacturing difficulty of the gas delivery device 30.

[0072] According to some embodiments of this application, as shown in Figures 2 and 7, a gas filter device 40 is provided in the main air intake channel 311.

[0073] The drying oven 100 includes a gas filtration device 40, which can be a medium-efficiency circulating filter. When gas flows through the gas filtration device 40, it can filter out particulate matter in the gas, such as dust, fibers, and some bacteria, thereby improving the cleanliness of the gas. The gas filtration device 40 can be installed in the main air intake channel 311. Since the gas flows into the intake channel 31 through the air inlet 35, it flows from the main air intake channel 311 into the first intake branch channel 312 and the second intake branch channel 313. Therefore, by installing the gas filtration device 40 in the main air intake channel 311, the gas can be filtered by the gas filtration device 40 before flowing into the first intake branch channel 312 and the second intake branch channel 313, thereby improving the cleanliness of the gas flowing into the first gas flow channel 112 and the second gas flow channel 113, reducing the risk of contamination of the object to be dried 200, and thus making the placement of the gas filtration device 40 reasonable.

[0074] In the above technical solution, by providing a gas filter device 40 in the main air intake channel 311, the gas can be filtered by the gas filter device 40 before flowing into the first air intake branch channel 312 and the second air intake branch channel 313, thereby improving the cleanliness of the gas flowing into the first gas flow channel 112 and the second gas flow channel 113, reducing the risk of the object to be dried 200 being contaminated, and thus making the gas filter device 40 reasonably positioned.

[0075] According to some embodiments of this application, as shown in Figures 2 and 7, a heating mechanism reserved area 50 is provided in the main intake channel 311.

[0076] In this system, along the gas flow direction within the main air intake channel 311, the reserved area 50 for the heating mechanism can be located upstream of the gas filter device 40, or downstream of the gas filter device 40. Alternatively, both upstream and downstream sides of the gas filter device 40 can have reserved areas 50 for the heating mechanism. A heating mechanism, such as a heating rod or heating tube, can be installed in the reserved area 50. Users can choose whether to install a heating mechanism in the reserved area 50 based on actual usage. When a heating mechanism is installed in the reserved area 50, the gas flowing through the main air intake channel 311 can be heated by the heating mechanism. The heated gas then flows into the first gas flow channel 112 and the second gas flow channel 113, drying the object 200 and further improving its drying efficiency, thereby enhancing the drying capacity of the drying oven 100.

[0077] In the above technical solution, by providing a heating mechanism reserved area 50 in the main air intake channel 311, the heating mechanism reserved area 50 can be reasonably selected to install a heating mechanism according to the actual use. When the heating mechanism reserved area 50 is equipped with a heating mechanism, the gas flowing through the main air intake channel 311 can be heated by the heating mechanism. When the heated gas flows into the first gas flow channel 112 and the second gas flow channel 113, the heated gas can dry the object to be dried 200, thereby further improving the drying efficiency of the object to be dried 200, which in turn helps to improve the drying capacity of the drying oven 100.

[0078] According to some embodiments of this application, as shown in Figures 2, 4, 5 and 7, the exhaust flow channel 32 includes: an exhaust main flow channel 321, a first exhaust branch flow channel 322 and a second exhaust branch flow channel 323. The first exhaust branch flow channel 322 connects the exhaust main flow channel 321 and the first gas flow channel 112, and the second exhaust branch flow channel 323 connects the exhaust main flow channel 321 and the second gas flow channel 113.

[0079] The exhaust channel 32 may include an exhaust main channel 321, a first exhaust branch channel 322, and a second exhaust branch channel 323. One end of the exhaust main channel 321 is connected to the exhaust port 36, and the other end of the exhaust main channel 321 is connected to the first exhaust branch channel 322. The first exhaust branch channel 322 is connected to the first gas channel 112, thereby connecting the first exhaust branch channel 322 with the exhaust main channel 321 and the first gas channel 112, allowing the gas in the first gas channel 112 to flow out of the drying oven 100 through the first exhaust branch channel 322, the exhaust main channel 321, and the exhaust port 36. The other end of the exhaust main channel 321 is also connected to the second exhaust branch channel 323, which is connected to the second gas channel 113, allowing the gas in the second gas channel 113 to flow out of the drying oven 100 through the second exhaust branch channel 323, the exhaust main channel 321, and the exhaust port 36.

[0080] In the above technical solution, the first exhaust diversion channel 322 connects the main exhaust channel 321 and the first gas channel 112, and the second exhaust diversion channel 323 connects the main exhaust channel 321 and the second gas channel 113. This can achieve the effect of diverting the gas in the first gas channel 112 and the second gas channel 113 out of the drying oven 100. Furthermore, by setting up a single main exhaust channel 321, the gas can be diverted out of the drying oven 100, which helps to simplify the structure of the exhaust channel 32, thereby further simplifying the structure of the gas conveying device 30 and reducing the manufacturing difficulty of the gas conveying device 30.

[0081] According to some embodiments of this application, as shown in Figures 2, 4 and 7, the gas delivery device 30 includes: a first housing 37, a second housing 38 and a third housing 39. The second housing 38 is connected between the first housing 37 and the third housing 39. A portion of the inlet channel 31 is formed in the first housing 37 and another portion is formed in the second housing 38. A portion of the exhaust channel 32 is formed in the third housing 39 and another portion is formed in the second housing 38. A first fan 33 and a second fan 34 are both disposed in the second housing 38.

[0082] The gas delivery device 30 may include a first chamber 37, a second chamber 38, and a third chamber 39. These chambers are disposed outside the oven body 10. The second chamber 38 is connected between the first chamber 37 and the third chamber 39, as shown in Figures 2 and 7. Along a first direction, the second chamber 38 is located between the first chamber 37 and the third chamber 39. The second chamber 38 can be fixedly connected to both the first and third chambers. A portion of the air inlet channel 31 is formed in the first chamber 37, and another portion is formed in the second chamber 38.

[0083] As an example, a first intake splitter 312 and a second intake splitter 313 are formed in a first housing 37, and a main intake duct 311 is formed in a second housing 38. The first housing 37 may include a first housing body 371, a second housing body 372, and a third housing body 373. The first housing body 371, the second housing body 372, and the third housing body 373 may be integrally formed. The first housing body 371 and the third housing body 373 are opposite to and spaced apart along a second direction. Both the first housing body 371 and the third housing body 373 extend along a first direction and may be parallel to each other. The second housing body 372 is connected between the first housing body 371 and the third housing body 373. The first housing body 371 is located in the third housing body. Above the housing body 373, a first intake diversion channel 312 is formed in the first housing body 371 and the second housing body 372, and a second intake diversion channel 313 is formed in the second housing body 372 and the third housing body 373. A second housing body inlet is formed on the side wall of the second housing body 372 facing the second housing body 38. One end of the first intake diversion channel 312 and one end of the second intake diversion channel 313 are both connected to the second housing body inlet. The other end of the first intake diversion channel 312 is connected to the first gas flow channel 112, and the other end of the second intake diversion channel 313 is connected to the second gas flow channel 113. A second housing outlet is formed on the side wall of the second housing body 38 facing the second housing body 372. The second housing outlet is connected to the second housing body inlet and the main intake channel 311. After the gas in the main intake channel 311 flows into the inlet of the second housing body through the outlet of the second housing, the gas is split in the second housing body 372. Part of the gas flows to the first intake split channel 312, and the other part of the gas flows to the second intake split channel 313, thereby achieving the effect of allowing the gas to flow into the first gas channel 112 and the second gas channel 113 at the same time.

[0084] As an example, a first exhaust diversion channel 322 and a second exhaust diversion channel 323 are formed in a third housing 39, and a main exhaust channel 321 is formed in a second housing 38. The third housing 39 may include a fourth housing body 381, a fifth housing body 382, ​​and a sixth housing body 383. The fourth housing body 381, the fifth housing body 382, ​​and the sixth housing body 383 may be integrally formed. The fourth housing body 381 and the sixth housing body 383 are opposite to each other and spaced apart along a second direction. The fifth housing body 382 is connected between the fourth housing body 381 and the sixth housing body 383. The fourth housing body 381 is located above the sixth housing body 383. The first exhaust diversion channel 322 is formed in the fourth housing body. The main body 381 and the fifth box body 382 are formed. The second exhaust diversion channel 323 is formed in the fifth box body 382 and the sixth box body 383. The fifth box body 382 has a fifth box body outlet on its side wall facing the second box body 38. One end of the first exhaust diversion channel 322 and one end of the second exhaust diversion channel 323 are both connected to the fifth box body outlet. The other end of the first exhaust diversion channel 322 is connected to the first gas flow channel 112. The other end of the second exhaust diversion channel 323 is connected to the second gas flow channel 113. The second box body 38 has a second box body inlet on its side wall facing the fifth box body 382. The second box body inlet is connected to the fifth box body outlet and the main exhaust channel 321. The gas flowing out of the first gas channel 112 and the gas flowing out of the second gas channel 113 converge in the fifth chamber body 382. The gas in the fifth chamber body 382 flows into the exhaust mainstream channel 321 through the fifth chamber body outlet and the second chamber body inlet, thereby achieving the effect of simultaneously allowing the gas in the first gas channel 112 and the gas in the second gas channel 113 to flow out of the drying oven 100.

[0085] As an example, both the air inlet 35 and the exhaust outlet 36 can be formed in the second housing 38. Along the second direction, both the air inlet 35 and the exhaust outlet 36 can be formed on the top wall of the second housing 38. The first fan 33 and the second fan 34 are both fixed to the second housing 38. The first fan 33 and the second fan 34 are both detachably connected to the second housing 38. The first fan 33 can be fixed to the side wall of the second housing 38, and the second fan 34 can be fixed to the top wall of the second housing 38. The second fan 34 can be located at the exhaust outlet 36.

[0086] In the above technical solution, by setting the first chamber 37, the second chamber 38 and the third chamber 39, gas can flow from the same side of the drying oven 100 into the first gas flow channel 112 and the second gas flow channel 113, and gas in the first gas flow channel 112 and the second gas flow channel 113 can also flow out from the same side of the drying oven 100. This simplifies the structure of the gas conveying device 30, which is beneficial to simplifying the structure of the drying oven 100, making the structure of the drying oven 100 more compact, and reducing the volume of the drying oven 100.

[0087] According to some embodiments of this application, as shown in Figures 2 and 5, a first guide plate 80 may be provided inside the first box body 371. The first guide plate 80 is located inside the first air inlet diversion channel 312. The connection between the second box body 372 and the first box body 371 forms a first arc-shaped connection structure. The first guide plate 80 is parallel to the first direction. After the gas flows into the first air inlet diversion channel 312, under the guiding effect of the first guide plate 80 and the first arc-shaped connection structure, it can help improve the gas flow rate in the first gas flow channel 112, so that the object to be dried 200 is more stably suspended in the gas flow channel 11.

[0088] As shown in Figures 2 and 5, a second guide plate 90 can be provided inside the third box body 373. The second guide plate 90 is located inside the second air inlet diversion channel 313. The connection between the second box body 372 and the third box body 373 forms a second arc-shaped connection structure. The second guide plate 90 is parallel to the first direction. After the gas flows into the second air inlet diversion channel 313, under the guiding effect of the second guide plate 90 and the second arc-shaped connection structure, it can help improve the gas flow rate in the second gas flow channel 113, so that the object to be dried 200 is more stably suspended in the gas flow channel 11.

[0089] According to some embodiments of this application, as shown in FIG2, the second housing 38 can form a first maintenance door 384. Users can open the first maintenance door 384 to enter the gas conveying device 30 and perform maintenance on the internal structural components of the gas conveying device 30. When maintenance is not required, the first maintenance door 384 can be closed to reduce the risk of external substances from the drying oven 100 entering the gas conveying device 30.

[0090] According to some embodiments of this application, as shown in FIG1, the oven body 10 can form a second maintenance door 12. Users can open the second maintenance door 12 to enter the oven body 10 and perform maintenance on the internal structural components of the oven body 10. When maintenance is not required, the second maintenance door 12 can be closed to reduce the risk of external substances entering the oven body 10.

[0091] According to some embodiments of this application, as shown in Figures 2 and 5, the drying oven 100 further includes a negative pressure suction pipe 60. Along a first direction, the opposite ends of the object channel 111 are respectively formed with an inlet 1111 and an outlet 1112, and the negative pressure suction pipe 60 is connected to at least one of the inlet 1111 and the outlet 1112.

[0092] The drying oven 100 may further include a negative pressure suction pipe 60. Along the first direction, the opposite ends of the object channel 111 are respectively formed with an inlet 1111 and an outlet 1112. The object channel 111 is connected to the inlet 1111 and the outlet 1112. The negative pressure suction pipe 60 is connected to at least one of the inlet 1111 and the outlet 1112. That is, the negative pressure suction pipe 60 is connected to the inlet 1111, or the negative pressure suction pipe 60 is connected to the outlet 1112, or the negative pressure suction pipe 60 is connected to both the inlet 1111 and the outlet 1112. This application uses the example of a negative pressure suction pipe 60 connected to both the inlet 1111 and the outlet 1112. The negative pressure suction pipe 60 may include a first suction pipe 61 and a second suction pipe 62. The first suction pipe 61 is connected to the inlet 1111 and the suction device. The first suction pipe 61 is connected to the inlet 1111 through the side wall of the inlet 1111. The second suction pipe 62 is connected to the outlet 1112 and the suction device. The second suction pipe 62 is connected to the outlet 1112 through the side wall of the outlet 1112. The suction device may be a second fan 34, or it may be a separately installed fan. When the exhaust device is working, the gas at the inlet 1111 is drawn away through the first exhaust pipe 61, creating a negative pressure inside the inlet 1111. The gas at the outlet 1112 is drawn away through the second exhaust pipe 62, creating a negative pressure inside the outlet 1112. The gas in the gas channel 11 can be drawn away through the negative pressure exhaust pipe 60, thereby reducing the risk of gas overflowing from the inlet 1111 and outlet 1112. Since the gas in the gas channel 11 has a certain temperature, the risk of users being burned by the gas overflowing from the inlet 1111 and outlet 1112 can be reduced, thus improving the safety of the drying oven 100.

[0093] In the above technical solution, by setting a negative pressure suction pipe 60, and the negative pressure suction pipe 60 being connected to at least one of the inlet 1111 and the outlet 1112, when the suction device is working, the gas at the inlet 1111 is drawn away through the first suction pipe 61 to form a negative pressure in the inlet 1111, and the gas at the outlet 1112 is drawn away through the second suction pipe 62 to form a negative pressure in the outlet 1112. The gas in the gas flow channel 11 can be drawn away through the negative pressure suction pipe 60, thereby reducing the risk of gas in the gas flow channel 11 overflowing from the inlet 1111 and the outlet 1112. Since the gas in the gas flow channel 11 has a certain temperature, the risk of the gas in the gas flow channel 11 overflowing from the inlet 1111 and the outlet 1112 and scalding the user can be reduced, thereby improving the safety of the drying oven 100.

[0094] According to some embodiments of this application, as shown in FIG5, the heating device 20 is disposed inside the oven body 10, and the heating device 20 is disposed on at least one side of the gas flow channel 11 along a second direction perpendicular to the first direction.

[0095] The heating device 20 is located inside the oven body 10. The heating device 20 can be installed within the oven body 10 along a second direction, perpendicular to the first direction (the second direction being the Z direction in Figure 5). The heating device 20 can be located on one side of the gas flow channel 11, or on both sides of the gas flow channel 11. This application uses the example of heating devices 20 being installed on both sides of the gas flow channel 11 along the second direction for illustration. After the object 200 to be dried passes through the gas flow channel 11, heating devices 20 are installed on both sides of the object 200 along the second direction.

[0096] In the above technical solution, a heating device 20 is provided on at least one side of the gas flow channel 11. The heating device 20 can be reasonably selected on one or both sides of the gas flow channel 11 according to actual needs. When the heating device 20 is provided on both sides of the gas flow channel 11, the heating device 20 located on both sides of the object to be dried 200 can dry the two surfaces of the object to be dried 200 respectively during the drying process. The simultaneous heating and drying of the two surfaces of the object to be dried 200 is beneficial to further improve the drying efficiency of the object to be dried 200.

[0097] According to some embodiments of this application, the heating device 20 is a light heating device 20 or an electromagnetic heating device 20.

[0098] The heating device 20 can be configured as a light heating device 20, or it can be configured as an electromagnetic heating device 20.

[0099] As an example, when the heating device 20 is configured as a light-based heating device 20, the light-based heating device 20 can be an infrared lamp, an infrared plate, a UV lamp, a laser heater, etc. This application uses a laser heater as an example for illustration. When using a laser heater to dry the object 200, the laser heater emits a continuous laser beam toward the object 200. The size of the laser spot can be adjusted, and the heating range of the laser heater is variable, making the laser heater compatible with various sizes of objects 200 to be dried. The laser beam penetrates deeply and directly acts on the slurry on the surface of the object 200. Electrons in the slurry on the surface of the object 200 absorb the energy of the laser, undergo transitions, and release heat, causing the object 200 to heat up rapidly. The released heat is conducted to the water, and the water absorbs heat and evaporates, thereby achieving the effect of drying the object 200. Furthermore, when using the light heating device 20 to dry the object 200, compared to drying the object 200 with hot air, the external environment of the drying oven 100 absorbs less energy, the object 200 absorbs more heat, and the overall energy utilization rate is higher than that of hot air heating.

[0100] It should be noted that the laser heater can be a continuous laser heater, which has a stable operating state, i.e., a steady state. In a continuous laser heater, the particle number at each energy level and the radiation field within the cavity have a stable distribution. The characteristic of a continuous laser heater is that the excitation of the working substance and the corresponding laser output can continue continuously over a relatively long period of time, making it very suitable for drying processes requiring long-term continuous operation.

[0101] As another example, when the heating device 20 is set as an electromagnetic heating device 20, the electromagnetic heating device 20 converts electrical energy into heat energy. The electromagnetic heating device 20 uses electromagnetic induction to generate eddy currents in the object to be dried 200 to electrically heat the object to be dried 200. It converts electrical energy into electromagnetic energy, and then converts electromagnetic energy back into electrical energy. The electrical energy is converted into heat energy inside the object to be dried 200 to achieve the purpose of heating the object to be dried 200.

[0102] In the above technical solution, the heating device 20 is set as a light heating device 20 or an electromagnetic heating device 20. Compared with the drying oven 100 using a nozzle to dry the object 200, the drying oven 100 of this application does not need to be equipped with a hot air circulation system. This is beneficial to reduce the volume of the drying oven 100, reduce the space occupied by the drying oven 100, reduce factory costs, and improve the heating efficiency and heating speed of the heating device 20. At the same time, the heating device 20 uses more energy for drying, which is beneficial to improve energy utilization. In addition, it is beneficial to reduce the internal temperature of the oven body 10, making the production process safer.

[0103] According to some embodiments of this application, as shown in FIG5, there are multiple heating devices 20. Along the second direction, the multiple heating devices 20 are respectively located on both sides of the gas flow channel 11, and the heating device 20 located on one side of the gas flow channel 11 and the heating device 20 located on the other side of the gas flow channel 11 are at least partially staggered along the first direction.

[0104] The heating device 20 is configured in multiple ways. Along the second direction, some heating devices 20 are located on one side of the gas flow channel 11, and others are located on the other side of the gas flow channel 11. Multiple heating devices 20 can be provided on both sides of the gas flow channel 11. This application uses two heating devices on both sides of the gas flow channel 11 as an example for explanation. As shown in Figure 5, the heating device 20 located on the lower side of the gas flow channel 11 and the heating device 20 located on the upper side of the gas flow channel 11 are at least partially staggered along the first direction. That is, the heating device 20 located on the lower side of the gas flow channel 11 and the heating device 20 located on the upper side of the gas flow channel 11 can be partially staggered along the first direction, or as shown in Figure 5, the heating device 20 located on the lower side of the gas flow channel 11 and the heating device 20 located on the upper side of the gas flow channel 11 can be completely staggered along the first direction. The orthographic projection of the heating device 20 located below the gas flow channel 11 and offset from the heating device 20 located above the gas flow channel 11 along the second direction can be offset from the orthographic projection of the heating device 20 located above the gas flow channel 11, or the orthographic projection of the heating device 20 located below the gas flow channel 11 and offset from the heating device 20 located above the gas flow channel 11 along the second direction can be adjacent to the orthographic projection of the heating device 20 located above the gas flow channel 11, or the orthographic projection of the heating device 20 located below the gas flow channel 11 and offset from the heating device 20 located above the gas flow channel 11 along the second direction can partially coincide with the orthographic projection of the heating device 20 located above the gas flow channel 11.

[0105] In the above technical solution, by having the heating device 20 located on one side of the gas flow channel 11 and the heating device 20 located on the other side of the gas flow channel 11 at least partially staggered along the first direction, it is beneficial to increase the heating coverage area of ​​the multiple heating devices 20, and further beneficial to improve the drying efficiency of the drying oven 100.

[0106] According to some embodiments of this application, the heating device 20 is adjustable along a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other.

[0107] In this diagram, the third direction is the Y-direction in Figure 2, and the first, second, and third directions are perpendicular to each other. The oven body 10 may be equipped with a guide rail extending along the third direction, and the heating device 20 is slidably mounted on the guide rail, thereby achieving an adjustable position of the heating device 20 along the third direction. Alternatively, the oven body 10 may be equipped with a lead screw, and the heating device 20 has a threaded hole. The lead screw extends along the third direction and passes through the threaded hole, and rotation of the lead screw achieves an adjustable position of the heating device 20 along the third direction.

[0108] In the above technical solution, the heating device 20 is adjustable along the third direction, and the position of the heating device 20 along the third direction can be adjusted according to the actual heating needs. This allows the heating device 20 to be adjusted to a suitable position, thereby enabling the heating device 20 to better heat the object to be dried 200, which is beneficial to improving the drying efficiency of the object to be dried 200.

[0109] According to some embodiments of this application, as shown in FIG5, the oven body 10 is provided with a partition 70, which is located between the heating device 20 and the gas flow channel 11. The partition 70 is constructed as the flow channel wall of the gas flow channel 11, and the partition 70 has a transparent portion 71, which corresponds to the corresponding heating device 20.

[0110] The oven body 10 is provided with a partition 70, which is fixed to the oven body 10. Along the second direction, the partition 70 is located between the heating device 20 and the gas flow channel 11. The partition 70 is constructed as the flow channel wall of the gas flow channel 11, and the partition 70 can separate the heating device 20 and the gas flow channel 11. As an example, as shown in Figure 5, heating devices 20 are provided on both sides of the gas flow channel 11. There are two partitions 70. One partition 70 is located between the upper heating device 20 and the gas flow channel 11, and the other partition 70 is located between the lower heating device 20 and the gas flow channel 11. Both partitions 70 are the flow channel walls of the gas flow channel 11. The gas flow channel 11 is located between the two partitions 70. One partition 70 is the flow channel wall of the first gas flow channel 112, and the other partition 70 is the flow channel wall of the second gas flow channel 113. The two partitions 70 can separate the gas flow channel 11 from the external space of the gas flow channel 11, so that the gas can flow more smoothly in the first gas flow channel 112 and the second gas flow channel 113, reducing the risk of the slurry on the surface of the object to be dried 200 affecting the laser homogenizer, and facilitating the arrangement and maintenance of the heating device 20. Furthermore, the partition 70 separates the heating device 20 from the gas flow channel 11, isolating the heating device 20 from the gas flow channel 11. The hot water vapor generated by the heating device 20 heating the object to be dried 200 is carried away by the gas in the first gas flow channel 112 and the second gas flow channel 113 and discharged from the drying oven 100, reducing the probability that the generated hot water vapor will affect the heating device 20, thereby extending the service life of the heating device 20 and reducing the maintenance cost of the drying oven 100.

[0111] The partition 70 has a transparent portion 71. The partition 70 may include multiple transparent glass panes, each of which is configured as a transparent portion 71. Along the second direction, the transparent portion 71 is correspondingly disposed with respect to the corresponding heating device 20. When the heating device 20 is configured as a light heating device 20, when the heating device 20 emits heating light toward the object 200 to be dried, the light can pass through the corresponding transparent portion 71 and act on the object 200 to be dried, thereby achieving the effect of heating and drying the object 200.

[0112] In the above technical solution, the partition 70 is located between the heating device 20 and the gas flow channel 11, and the partition 70 is constructed as the flow channel wall of the gas flow channel 11. This allows the gas to flow more smoothly in the first gas flow channel 112 and the second gas flow channel 113, reducing the risk of slurry or other substances on the surface of the object to be dried 200 affecting the laser homogenizing mirror. This is beneficial for the arrangement and maintenance of the heating device 20, and also reduces the probability of the generated hot water steam affecting the heating device 20, thereby extending the service life of the heating device 20 and reducing the maintenance cost of the drying oven 100. The partition 70 has a transparent portion 71. When the heating device 20 is configured as a light heating device 20, when the heating device 20 emits heating light towards the object to be dried 200, the light can pass through the corresponding transparent portion 71 and act on the object to be dried 200, achieving the effect of heating and drying the object to be dried 200. Alternatively, when the heating device 20 is configured as an electromagnetic heating device 20, it can also achieve the effect of heating and drying the object to be dried 200.

[0113] According to some embodiments of this application, as shown in Figures 1 and 5, the oven body 10 is provided with an observation window 91. The internal environment of the oven body 10 can be observed through the observation window 91, allowing the user to understand the internal conditions of the oven body 10. Furthermore, the observation window 91 can be correspondingly configured with the gas flow channel 11, and the observation window 91 is a side wall of the gas flow channel 11. The drying status of the object 200 to be dried within the gas flow channel 11 can be observed through the observation window 91.

[0114] It should be noted that the drying oven 100 of this application has one oven body 10. The oven body 10 is not provided with rollers to support the object to be dried 200. This can increase the internal space of the oven body 10, which is conducive to the uniform flow of gas in the gas channel 11. In addition, one oven body 10 is easy to control and does not require segmented scheduling.

[0115] The coating equipment according to the embodiments of this application includes the drying oven 100 of the above embodiments, which can improve the working efficiency of the coating equipment.

[0116] According to some embodiments of this application, referring to Figures 2 and 5, this application provides a drying oven 100, which includes an oven body 10 and a plurality of heating devices 20. The heating devices 20 are laser heaters. A gas flow channel 11 is formed inside the oven body 10. The gas flow channel 11 is adapted to be passed through by an object 200 to be dried in a first direction. Gas in the gas flow channel 11 is adapted to flow in the first direction. The gas flow channel 11 is configured to suspend the object 200 to be dried in the gas flow channel 11 when the gas flows through it. In a second direction, a plurality of heating devices 20 are disposed inside the oven body 10. Some of the heating devices 20 are disposed on the upper side of the gas flow channel 11, and other heating devices 20 are disposed on the lower side of the gas flow channel 11. Two partitions 70 are provided inside the oven body 10. The two partitions 70 are opposite to each other and spaced apart in the second direction. The two partitions 70 and the side wall of the oven body 10 together define the gas flow channel 11. A partition 70 is located between the heating device 20 and the gas flow channel 11, and the partition 70 is constructed as the flow channel wall of the gas flow channel 11. The partition 70 has a transparent portion 71, which corresponds to the heating device 20 along the second direction. The gas flow channel 11 includes an object channel 111, a first gas flow channel 112, and a second gas flow channel 113. Along the second direction, the object channel 111 is located between the first gas flow channel 112 and the second gas flow channel 113, and the object channel 111 connects the first gas flow channel 112 and the second gas flow channel 113. Along the first direction, an inlet 1111 and an outlet 1112 are formed at opposite ends of the object channel 111, and both the inlet 1111 and the outlet 1112 are connected to the negative pressure suction pipe 60.

[0117] The gas delivery device 30 has an inlet flow channel 31, an exhaust flow channel 32, a first fan 33, and a second fan 34. The inlet flow channel 31 is connected to both the first gas flow channel 112 and the second gas flow channel 113. The first fan 33 is configured to allow gas to flow into the first gas flow channel 112 and the second gas flow channel 113 through the inlet flow channel 31. The exhaust flow channel 32 is connected to both the first gas flow channel 112 and the second gas flow channel 113. The second fan 34 is configured to allow gas to flow out of the first gas flow channel 112 and the second gas flow channel 113.

[0118] The gas delivery device 30 includes a first housing 37, a second housing 38, and a third housing 39. The second housing 38 is connected between the first housing 37 and the third housing 39. A portion of an inlet duct 31 is formed in the first housing 37, and another portion is formed in the second housing 38. A portion of an exhaust duct 32 is formed in the third housing 39, and another portion is formed in the second housing 38. A first fan 33 and a second fan 34 are both located in the second housing 38. The inlet duct 31 has an inlet 35 that connects the inlet duct 31 to the external environment of the drying oven 100. The exhaust duct 32 has an exhaust port 36 that connects the exhaust duct 32 to the external environment of the drying oven 100. Both the inlet 35 and the exhaust port 36 are formed in the second housing 38. The heating device 20 is adjustable in a third-degree direction.

[0119] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Furthermore, the arrows in Figures 5 and 7 indicate the gas flow direction.

[0120] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0121] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A drying oven, wherein, include: The oven body has a gas flow channel formed inside the oven body. The gas flow channel is adapted to be passed through by the object to be dried in a first direction. The gas in the gas flow channel is adapted to flow in the first direction. The gas flow channel is configured to suspend the object to be dried in the gas flow channel when the gas flows through the gas flow channel. A heating device is provided on the oven body and is used to heat the object to be dried.

2. The drying oven according to claim 1, wherein, The gas flow channel includes: an object channel, a first gas flow channel, and a second gas flow channel; along a second direction, the object channel is located between the first gas flow channel and the second gas flow channel, the object channel connects the first gas flow channel and the second gas flow channel, the object channel is adapted to be passed through by the object to be dried, and the first direction and the second direction are perpendicular.

3. The drying oven according to claim 2, wherein, The object channel, the first gas flow channel, and the second gas flow channel are parallel to each other.

4. The drying oven according to claim 2 or 3, wherein, The gas flow direction in the first gas channel is the same as the gas flow direction in the second gas channel; or The gas flow direction in the first gas flow channel is opposite to that in the second gas flow channel.

5. The drying oven according to any one of claims 2-4, wherein, Also includes: A gas delivery device, wherein the gas delivery device is connected to both a first gas flow channel and a second gas flow channel, the gas delivery device being configured to allow gas to flow into or out of the first gas flow channel, and the gas delivery device being further configured to allow gas to flow into or out of the second gas flow channel.

6. The drying oven according to claim 5, wherein, The gas delivery device has an inlet flow channel, an exhaust flow channel, a first fan, and a second fan. The inlet flow channel is connected to both the first gas flow channel and the second gas flow channel. The first fan is configured to allow gas to flow into the first gas flow channel and the second gas flow channel through the inlet flow channel. The exhaust flow channel is connected to both the first gas flow channel and the second gas flow channel. The second fan is configured to allow gas to flow out of the first gas flow channel and the second gas flow channel.

7. The drying oven according to claim 6, wherein, The air intake channel has an air inlet, which connects the air intake channel to the external environment of the drying oven. The exhaust channel has an exhaust outlet, which connects the exhaust channel to the external environment of the drying oven.

8. The drying oven according to claim 7, wherein, At least one of the air inlet and the air outlet is provided with an on / off valve.

9. The drying oven according to any one of claims 6-8, wherein, The intake air passage includes: a main intake air passage, a first intake air diversion passage, and a second intake air diversion passage. The first intake air diversion passage connects the main intake air passage and the first gas passage, and the second intake air diversion passage connects the main intake air passage and the second gas passage.

10. The drying oven according to claim 9, wherein, The main air intake duct is equipped with a gas filtration device.

11. The drying oven according to claim 9 or 10, wherein, The main intake duct is provided with a reserved area for a heating mechanism.

12. The drying oven according to any one of claims 6-11, wherein, The exhaust flow channel includes: a main exhaust flow channel, a first exhaust flow channel, and a second exhaust flow channel. The first exhaust flow channel connects the main exhaust flow channel and the first gas flow channel, and the second exhaust flow channel connects the main exhaust flow channel and the second gas flow channel.

13. The drying oven according to any one of claims 6-12, wherein, The gas delivery device includes: a first housing, a second housing, and a third housing. The second housing is connected between the first housing and the third housing. A portion of the air intake channel is formed in the first housing and another portion is formed in the second housing. A portion of the exhaust channel is formed in the third housing and another portion is formed in the second housing. Both the first fan and the second fan are located in the second housing.

14. The drying oven according to any one of claims 2-13, wherein, Also includes: A negative pressure suction pipe is provided along the first direction, with an inlet and an outlet formed at opposite ends of the object channel, and the negative pressure suction pipe is connected to at least one of the inlet and the outlet.

15. The drying oven according to any one of claims 1-14, wherein, The heating device is either a light-based heating device or an electromagnetic heating device.

16. The drying oven according to any one of claims 1-15, wherein, The heating device is located inside the oven body, and is provided on at least one side of the gas flow channel along a second direction perpendicular to the first direction.

17. The drying oven according to claim 16, wherein, The oven body is provided with a partition, which is located between the heating device and the gas flow channel. The partition is constructed as the flow channel wall of the gas flow channel, and the partition has a transparent part, which corresponds to the corresponding heating device.

18. The drying oven according to claim 16 or 17, wherein, The heating device is a plurality of devices, and along the second direction, the plurality of heating devices are respectively located on both sides of the gas flow channel, and the heating device located on one side of the gas flow channel and the heating device located on the other side of the gas flow channel are at least partially staggered along the first direction.

19. The drying oven according to any one of claims 16-18, wherein, The heating device is adjustable along a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other.

20. A coating apparatus, wherein, Includes a drying oven according to any one of claims 1-19.

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