Heater and drying device

Abstract

The utility model provides a kind of heater and drying device, in the heater, shell includes the main body shell with two open ends and the connecting baffle that extends from the first open end of main body shell inward;Protective net includes main body net and the connecting frame that extends outward from the periphery of main body net;Protective net is assembled in shell, connecting frame is stacked with connecting baffle, can increase contact area, avoid due to long-term stress and lead to shell or protective net deformation, main body net protrudes in shell, can disperse the stress of shell edge, to improve the explosion-proof performance of heater.Cover plate is detachably installed in the second open end of main body shell, and there is installation space between protective net;Heating plate is arranged in installation space;Compared with prior art, the overall structure of heater is simple, positive electrode sheet is dried by heating plate in heater, heating plate directly converts electric energy into radiated medium-long wave infrared rays, acts on the surface of positive electrode sheet, improves the problem of long heat transfer path.

Description

Technical Field

[0001] This utility model relates to the field of heater technology, and in particular to a heater and drying device. Background Technology

[0002] A heater is a device that converts electrical energy, chemical energy, or thermal energy into heat energy to raise the temperature of an object or environment. It is widely used in industry, households, and scientific research. However, many fields still do not utilize heaters. For example, the drying equipment used for positive electrode sheets in the lithium battery industry is a coating machine oven. The heater in this oven is typically supplied by heating steam or heat transfer oil through gas combustion. The heat transfer path is long, from gas to steam or hot oil, through a medium like air, and finally to the material being dried, resulting in significant heat loss. Furthermore, this type of heater requires numerous auxiliary devices, occupies a large space, and operates at high ambient temperatures. Additionally, the positive electrode drying section has explosion-proof requirements. To address these issues, there is an urgent need to design a heater that can improve the heat transfer path and meet explosion-proof requirements. Summary of the Invention This invention provides a heater and a drying device to solve the problems of long heat transfer paths and poor explosion-proof performance of existing heaters.

[0003] A heater includes a housing, a protective mesh, a cover plate, and a heating plate; The outer shell includes a main shell with two open ends and a connecting baffle extending inward from the first open end of the main shell; The protective netting includes a main net and a connecting frame extending outward from the periphery of the main netting; The protective net is assembled inside the outer shell, the connecting frame is overlapped with the connecting baffle, and the main net protrudes outside the outer shell; The cover plate is detachably installed at the second opening end of the main body shell, and there is an installation space between it and the protective net; The heating plate is disposed within the installation space.

[0004] Preferably, the connecting frame includes a first support portion extending from the periphery of the main mesh along the same side and a first connecting portion extending outward from one end of the first support portion in a direction perpendicular to the first support portion; The first connecting part overlaps with the connecting baffle, and the outer wall of the first supporting part abuts against the inner wall of the connecting baffle.

[0005] Preferably, the cover plate includes a main plate, a second support portion extending from the periphery of the main plate in a direction perpendicular to the main plate, and a second connecting portion extending inward from one end of the second support portion in a direction perpendicular to the second support portion; The second support portion is in close contact with the inner wall of the second opening end of the main body shell, and the second connecting portion is stacked with the heating plate.

[0006] Preferably, the main body plate is provided with wiring holes; The wiring holes are used to arrange internal power lines and signal lines.

[0007] Preferably, the heater further includes a sealing gasket; a sealing gasket is provided between the connecting frame and the connecting baffle, between the heating plate and the connecting frame, and between the heating plate and the cover plate.

[0008] Preferably, the heater further includes a connecting structure, through which the cover plate is mounted on the second opening end of the main body shell.

[0009] Preferably, the connection structure includes any one of a bolt structure, a snap-fit ​​structure, a magnetic structure, and an adhesive structure.

[0010] Preferably, the heater further includes a temperature sensor, which is bonded to the heating plate with high-temperature heat-resistant adhesive.

[0011] A drying apparatus, comprising the aforementioned heater.

[0012] The heater provided in this embodiment of the utility model has a shell, protective net, and cover plate combined into a whole. The heating plate is directly installed inside the whole. Compared with the prior art, the heater has a simple overall structure. The heating plate inside the heater dries the positive electrode plate. The heating plate directly converts electrical energy into radiated medium and long-wave infrared rays, which act on the surface of the positive electrode plate, improving the problem of long heat transfer path. Moreover, this heating method does not require complex auxiliary equipment, reducing many failure points and safety hazards caused by numerous devices. The protective net is assembled inside the shell, and the connecting frame and connecting baffle are stacked to form a double mechanical lock, which can better disperse stress and resist loosening caused by vibration or impact. The stacked structure can increase the contact area, reduce local pressure, and avoid deformation of the shell or protective net due to long-term stress. The main net protrudes outside the shell, which can disperse the force on the edge of the shell. The protruding part can act as a buffer space, reducing the probability of the shell being directly subjected to force, thereby improving the explosion-proof performance of the heater. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1This is an exploded view of the heater in one embodiment of this utility model; Figure 2 This is a top view of the protective netting in one embodiment of this utility model; Figure 3 This is a first cross-sectional view of the heater in one embodiment of the present invention; Figure 4 yes Figure 3 Enlarged view of point A in the middle; Figure 5 This is a cross-sectional view of the heater in one embodiment of the present invention.

[0015] The components include: 1. Outer shell; 11. Main shell; 12. Connecting baffle; 2. Protective net; 21. Main net; 22. Connecting frame; 221. First support part; 222. First connecting part; 3. Cover plate; 31. Main plate; 32. Second support part; 33. Second connecting part; 34. Wiring hole; 4. Heating plate; 5. Sealing gasket; 51. First sealing gasket; 52. Second sealing gasket; 53. Third sealing gasket; 6. Temperature sensor. Detailed Implementation

[0016] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0017] In the description of this application, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this application. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0018] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0019] This utility model provides a heater, as shown in the following embodiment. Figures 1-5 The heater includes a housing 1, a protective net 2, a cover plate 3, and a heating plate 4. The housing 1 includes a main body shell 11 with two open ends and a connecting baffle 12 extending inward from the first open end of the main body shell 11. The protective net 2 includes a main net 21 and a connecting frame 22 extending outward from the periphery of the main net 21. The protective net 2 is assembled inside the housing 1, the connecting frame 22 overlaps with the connecting baffle 12, and the main net 21 protrudes outside the housing 1. The cover plate 3 is detachably installed at the second open end of the main body shell 11, and there is an installation space between it and the protective net 2. The heating plate 4 is disposed within the installation space.

[0020] As an example, the heater can be used, but is not limited to, for drying the positive electrode sheet; specifically, it includes a housing 1, a protective net 2, a cover plate 3, and a heating plate 4; the housing 1 includes a main body shell 11 with two open ends and a connecting baffle 12, the connecting baffle 12 being a component extending inward from the first open end of the main body shell 11; the protective net 2 includes a main net 21 and a connecting frame 22, the connecting frame 22 being a component extending outward from the periphery of the main net 21. During installation, the protective net 2 is assembled inside the outer shell 1. The connecting frame 22 and the connecting baffle 12 are overlapped (such as nested, snap-fit, or bolted) to form a double mechanical lock. Compared with a single connection method (such as welding or gluing), it can better disperse stress and resist loosening caused by vibration or impact. The overlapping structure can increase the contact area, reduce local pressure, and avoid deformation of the outer shell 1 or the protective net 2 due to long-term stress. It can also realize tool-less disassembly and assembly of the protective net 2, reducing maintenance costs and time. The main net 21 protrudes outside the outer shell 1 and can form an "extended support frame" to disperse the stress on the edge of the outer shell 1. The protruding part can serve as a buffer space to reduce the probability of the outer shell 1 being directly subjected to stress, thereby improving the explosion-proof performance of the heater and extending the service life of the equipment. The cover plate 3 is detachably installed at the second opening end of the main shell 11, with an installation space between it and the protective net 2. The heating plate 4 is set within the installation space. With this configuration, the outer shell 1, protective net 2, and cover plate 3 are combined into a single unit, with the heating plate 4 directly installed within this unit. Compared to existing technologies, the heater has a simpler overall structure. The heating plate 4 within the heater dries the positive electrode sheet. The heater is powered by 220V or 380V AC. The heating plate 4 directly converts electrical energy into radiated mid-to-long-wave infrared rays, which act on the surface of the positive electrode sheet, improving the problem of long heat transfer paths. Furthermore, this heating method does not require complex auxiliary equipment, reducing many potential failure points and safety hazards caused by numerous devices. Additionally, the detachable cover plate 3 at the second opening end of the main shell 11 facilitates disassembly and assembly, allowing for easy replacement of the heating plate 4 according to actual needs. Both the outer shell 1 and cover plate 3 can be composed of sheet metal parts, and the protective net 2 can withstand impacts up to level 7 (not limited to the material or weaving method of the protective net 2).

[0021] In one embodiment, reference is made to Figure 3 and Figure 4 The connecting frame 22 includes a first support portion 221 extending from the periphery of the main mesh 21 along the same side and a first connecting portion 222 extending outward from one end of the first support portion 221 in a direction perpendicular to the first support portion 221; the first connecting portion 221 overlaps with the connecting baffle 12, and the outer wall of the first support portion 222 abuts against the inner wall of the connecting baffle 12.

[0022] As an example, the connecting frame 22 includes a first support portion 221 and a first connecting portion 222; the first support portion 221 is a component extending from the periphery of the main mesh 21 along the same side, and the first connecting portion 222 is a component extending outward from one end of the first support portion 221 in a direction perpendicular to the first support portion 221; during installation, the first connecting portion 221 overlaps with the connecting baffle 12, and the outer wall of the first support portion 222 abuts against the inner wall of the connecting baffle 12, so that the protective mesh 2 is embedded in the outer shell 1, and the main mesh 21 protrudes out of the outer shell 1. With this arrangement, the protective mesh 2 and the outer shell 1 are... The connection between them forms a double mechanical lock, which can better disperse stress and resist loosening caused by vibration or impact compared to a single connection method. The overlapping structure can increase the contact area, reduce local pressure, and avoid deformation of the outer shell 1 or protective net 2 due to long-term stress. It can also realize tool-less disassembly and assembly of protective net 2, reducing maintenance costs and time. The main net 21 protrudes from the outer shell 1 and can form an "extended support frame" to disperse the stress on the edge of the outer shell 1. The protruding part can serve as a buffer space to reduce the probability of the outer shell 1 being directly subjected to stress, thereby improving the explosion-proof performance of the heater and extending the service life of the equipment.

[0023] In one embodiment, reference is made to Figure 1 and Figure 4 The cover plate 3 includes a main plate 31, a second support portion 32 extending from the periphery of the main plate 31 in a direction perpendicular to the main plate 31, and a second connecting portion 33 extending inward from one end of the second support portion 32 in a direction perpendicular to the second support portion 32; the second support portion 32 is in close contact with the inner wall of the second opening end of the main shell 11, and the second connecting portion 33 is stacked with the heating plate 4.

[0024] As an example, the cover plate 3 includes a main body plate 31, a second support portion 32, and a second connecting portion 33. The main body plate 31 serves as a reference. The second support portion 32 is a component extending from the periphery of the main body plate 31 in a direction perpendicular to the main body plate 31. The second connecting portion 33 is a component extending inward from one end of the second support portion 32 in a direction perpendicular to the second support portion 32. During installation, the second support portion 32 is fitted to the inner wall of the second opening end of the main body shell 11, which increases the connection area between the cover plate 3 and the outer shell 1, making the connection between the cover plate 3 and the outer shell 1 more secure. The second connecting portion 33 overlaps with the heating plate 4, which increases the overlap area between the cover plate 3 and the heating plate 4, disperses the force exerted by the cover plate 3 on the heating plate 4, avoids damage to the heating plate 4, and thus improves the explosion-proof capability of the heater.

[0025] In one embodiment, reference is made to Figure 1 The main board 31 is provided with wiring holes 34; the wiring holes 34 are used to arrange internal power lines and signal lines.

[0026] As an example, the main board 31 is provided with wiring holes 34; the wiring holes 34 are provided to facilitate the arrangement of internal power lines and signal lines.

[0027] In one embodiment, reference is made to Figure 1 and Figure 4 The heater also includes a sealing gasket 5; a sealing gasket 5 is provided between the connecting frame 22 and the connecting baffle 12, between the heating plate 4 and the connecting frame 22, and between the heating plate 4 and the cover plate 3.

[0028] As an example, the heater also includes a sealing gasket 5; during installation, a sealing gasket 5 is provided between the connecting frame 22 and the connecting baffle 12, between the heating plate 4 and the connecting frame 22, and between the heating plate 4 and the cover plate 3; specifically, a first sealing gasket 51 is provided between the connecting frame 22 and the connecting baffle 12, which enhances the connection sealing between the connecting frame 22 and the connecting baffle 12; a second sealing gasket 52 is provided between the heating plate 4 and the connecting frame 22, which enhances the connection sealing between the heating plate 4 and the connecting frame 22; and a third sealing gasket 53 is provided between the heating plate 4 and the cover plate 3, which enhances the connection sealing between the heating plate 4 and the cover plate 3; thus ensuring the connection sealing between the various parts of the heater. The first sealing gasket 51 is a high-temperature resistant sealing gasket.

[0029] In one embodiment, the heater further includes a connecting structure, through which the cover plate 3 is mounted on the second opening end of the main body shell 11.

[0030] As an example, the heater also includes a connecting structure. During installation, the cover plate 3 is installed at the second opening end of the main body shell 11 through the connecting structure. This arrangement facilitates the disassembly and assembly of the cover plate 3, thereby making it easy to replace the heating plate 4 according to actual needs.

[0031] In one embodiment, the connection structure includes any one of a bolt structure, a snap-fit ​​structure, a magnetic structure, and an adhesive structure.

[0032] As an example, several forms of connection structures are introduced. For example, the connection structure includes a bolt structure, specifically, a first fixing hole is provided on the cover plate 3, and a second fixing hole is provided on the main body shell 11. Bolts are passed through the first fixing hole and the second fixing hole to realize the installation of the cover plate 3 on the main body shell 11.

[0033] For example, the connection structure includes a snap-fit ​​structure. Specifically, a first snap-fit ​​structure is provided on the cover plate 3, and a second snap-fit ​​structure is provided on the main body shell 11. The first snap-fit ​​structure and the second snap-fit ​​structure snap-fit ​​together to realize the installation of the cover plate 3 on the main body shell 11.

[0034] For example, the connection structure includes a magnetic structure. Specifically, a first magnetic element is provided on the cover plate 3, and a second magnetic element is provided on the main body shell 11. The first magnetic element and the second magnetic element are magnetically connected to each other to realize the installation of the cover plate 3 on the main body shell 11.

[0035] For example, the connection structure includes an adhesive structure. Specifically, a first adhesive is provided on the cover plate 3, and a second adhesive is provided on the main body shell 11. The first adhesive and the second adhesive are bonded together to realize the installation of the cover plate 3 on the main body shell 11.

[0036] In one embodiment, reference is made to Figure 3 and Figure 5 The heater also includes a temperature sensor 6, which is bonded to the heating plate 4 with high-temperature heat-resistant adhesive.

[0037] As an example, the heater also includes a temperature sensor 6. During installation, the temperature sensor 6 is bonded to the heating plate 4 using high-temperature heat-resistant adhesive. This allows for real-time sensing of the actual temperature of the heating plate 4, avoiding measurement errors caused by air gaps or heat conduction delays (such as the potential interference from environmental reflections in infrared thermometry). The high-temperature heat-resistant adhesive (such as silicone, epoxy resin, or ceramic-based adhesive) can withstand the high temperatures of the heating plate 4 (typically above 200℃~1000℃), preventing the adhesive from melting, falling off, or releasing harmful gases, ensuring the long-term stable operation of the temperature sensor 6. The adhesive bonding can isolate external electromagnetic interference (such as noise generated by motors or frequency converters), preventing signal distortion from the temperature sensor 6 and improving temperature control accuracy. The insulating properties of the heat-resistant adhesive can prevent short circuits between the heating plate 4 and the temperature sensor 6, ensuring electrical safety.

[0038] This utility model provides a drying device, including a heater.

[0039] As an example, the drying device includes a heater; the heater is a mesh-type explosion-proof industrial heater, which can be used, but is not limited to, for drying positive electrode sheets; specifically, it includes a housing 1, a protective mesh 2, a cover plate 3, and a heating plate 4; the housing 1 includes a main body shell 11 with two open ends and a connecting baffle 12, the connecting baffle 12 being a component extending inward from the first open end of the main body shell 11; the protective mesh 2 includes a main mesh 21 and a connecting frame 22, the connecting frame 22 being a component extending outward from the periphery of the main mesh 21. During installation, the protective net 2 is assembled inside the outer shell 1. The connecting frame 22 and the connecting baffle 12 are overlapped (such as nested, snap-fit, or bolted) to form a double mechanical lock. Compared with a single connection method (such as welding or gluing), it can better disperse stress and resist loosening caused by vibration or impact. The overlapping structure can increase the contact area, reduce local pressure, and avoid deformation of the outer shell 1 or the protective net 2 due to long-term stress. It can also realize tool-less disassembly and assembly of the protective net 2, reducing maintenance costs and time. The main net 21 protrudes outside the outer shell 1 and can form an "extended support frame" to disperse the stress on the edge of the outer shell 1. The protruding part can serve as a buffer space to reduce the probability of the outer shell 1 being directly subjected to stress, thereby improving the explosion-proof performance of the heater and extending the service life of the equipment. The cover plate 3 is detachably installed at the second opening end of the main body shell 11, with an installation space between it and the protective net 2. The heating plate 4 is set within the installation space. With this configuration, the outer shell 1, protective net 2, and cover plate 3 are combined into a single unit, with the heating plate 4 directly installed within this unit. Compared to existing technologies, the heater has a simple overall structure. The heating plate 4 within the heater dries the positive electrode sheet. The heater is powered by 220V or 380V AC. The heating plate 4 directly converts electrical energy into radiated mid-to-long-wave infrared rays, which act on the surface of the positive electrode sheet, improving the problem of long heat transfer paths. Moreover, this heating method does not require complex auxiliary equipment, reducing many potential failure points and safety hazards caused by numerous devices. Furthermore, the detachable cover plate 3 at the second opening end of the main body shell 11 facilitates disassembly and assembly, allowing for easy replacement of the heating plate 4 according to actual needs.

[0040] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A heater, characterized in that, Includes the outer casing, protective mesh, cover plate, and heating plate; The outer shell includes a main shell with two open ends and a connecting baffle extending inward from the first open end of the main shell; The protective netting includes a main net and a connecting frame extending outward from the periphery of the main netting; The protective net is assembled inside the outer shell, the connecting frame is overlapped with the connecting baffle, and the main net protrudes outside the outer shell; The cover plate is detachably installed at the second opening end of the main body shell, and there is an installation space between it and the protective net; The heating plate is disposed within the installation space.

2. The heater according to claim 1, characterized in that, The connecting frame includes a first support portion extending from the periphery of the main mesh along the same side and a first connecting portion extending outward from one end of the first support portion in a direction perpendicular to the first support portion. The first connecting part overlaps with the connecting baffle, and the outer wall of the first supporting part abuts against the inner wall of the connecting baffle.

3. The heater according to claim 1, characterized in that, The cover plate includes a main plate, a second support portion extending from the periphery of the main plate in a direction perpendicular to the main plate, and a second connecting portion extending inward from one end of the second support portion in a direction perpendicular to the second support portion; The second support portion is in close contact with the inner wall of the second opening end of the main body shell, and the second connecting portion is stacked with the heating plate.

4. The heater according to claim 3, characterized in that, The main body plate is provided with wiring holes; The wiring holes are used to arrange internal power lines and signal lines.

5. The heater according to claim 1, characterized in that, The heater also includes a sealing gasket; a sealing gasket is provided between the connecting frame and the connecting baffle, between the heating plate and the connecting frame, and between the heating plate and the cover plate.

6. The heater according to claim 1, characterized in that, The heater also includes a connecting structure, through which the cover plate is mounted on the second opening end of the main body shell.

7. The heater according to claim 6, characterized in that, The connection structure includes any one of the following: bolt structure, snap-fit ​​structure, magnetic structure, and adhesive structure.

8. The heater according to claim 1, characterized in that, The heater also includes a temperature sensor, which is bonded to the heating plate with high-temperature heat-resistant adhesive.

9. A drying apparatus, characterized in that, Includes the heater as described in any one of claims 1-8.

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