Gas heating device for a baking oven and baking oven

Abstract

The utility model discloses a gas heating device for baking oven and baking oven, the utility model relates to the field of battery production equipment, and the gas heating device for baking oven includes: first body, and the first body forms gas flow channel, and the gas flow channel is used for the gas flow, heat exchange structure, and at least part of heat exchange structure is located in gas flow channel, and heat exchange structure forms heat exchange flow channel, and heat exchange flow channel is used for the first heat exchange medium flow and at least part is located in gas flow channel. Therefore, by setting heat exchange structure on the gas heating device, it is favorable to reduce the risk of battery temperature sudden drop caused by the direct entry of gas into the baking oven, it is favorable to the uniform heating of the gas in the gas flow channel, it is favorable to reduce the energy consumption of the gas heating device, and it is also favorable to reduce the maintenance workload and maintenance cost of the gas heating device.

Description

Technical Field

[0001] This utility model relates to the field of battery cell production equipment, and in particular to a gas heating device for a baking oven and a baking oven having the gas heating device for the baking oven. Background Technology

[0002] In the prior art, the gas heating device used in the baking oven introduces gas during the gas replacement stage, which causes the temperature of the battery cell being baked to drop sharply. This results in a long baking time for the battery cell and affects its performance, leading to low battery cell production efficiency and negatively impacting battery cell performance. Consequently, battery cell quality declines and the defect rate of the battery cell increases.

[0003] Existing gas heating devices for baking ovens mostly use heating elements. During operation, these elements are prone to localized overheating or underheating, leading to uneven temperature control and inconsistent heating of the battery cells during baking, severely impacting their consistency and stability. Furthermore, heating elements consume a lot of energy, resulting in high operating costs and increasing the production cost burden on companies. As a vulnerable component, the heating element requires regular maintenance and replacement, further increasing the operating costs and maintenance workload of the gas heating device. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a gas heating device for an oven, which helps reduce the risk of a sudden drop in battery cell temperature caused by direct gas entry into the oven, facilitates uniform heating of the gas flowing through the channel, reduces the energy consumption of the gas heating device, and also helps reduce the maintenance workload and costs of the gas heating device.

[0005] This invention further proposes a baking oven.

[0006] According to a first aspect embodiment of the present invention, a gas heating device for an oven includes: a first body having a gas flow channel for gas to flow through; and a heat exchange structure having at least a portion located within the gas flow channel, the heat exchange structure having a heat exchange channel for a first heat exchange medium to flow through and at least a portion located within the gas flow channel.

[0007] According to the first aspect of the utility model, a gas heating device for an oven is provided on the gas heating device for the oven. At least part of the heat exchange structure is located in the gas flow channel. This facilitates heat exchange between the gas and the heat exchange structure in the gas flow channel when the gas flows through it. It also facilitates heat exchange between the first heat exchange medium and the gas through the heat exchange structure, thereby increasing the gas temperature. This reduces the risk of a sudden drop in battery cell temperature caused by the gas directly entering the oven, thus shortening the battery cell baking time, improving the battery cell baking efficiency, ensuring battery cell performance, improving battery cell quality, and reducing the defect rate of the battery cell.

[0008] At least a portion of the heat exchange structure is located within the gas flow channel, which facilitates uniform contact between the gas and the heat exchange structure within the channel, ensuring uniform heating of the gas. This results in consistent heating of the battery cell during baking, reducing uneven temperature control issues caused by the gas heating device, thus improving the consistency and stability of the battery cell and reducing the energy consumption of the gas heating device. Furthermore, at least a portion of the heat exchange structure directly exchanges heat with the gas within the gas flow channel, minimizing heat transfer paths and thus reducing heat loss.

[0009] Compared to traditional heating elements, gas heating devices reduce energy consumption, thereby lowering operating costs. The heat exchange structure of this application has no complex or easily damaged components (such as heating elements), and the first heat exchange medium within the heat exchange channel circulates stably, which helps reduce the risk of damage to the heat exchange structure, reduces maintenance and replacement work, and consequently reduces maintenance workload and costs for gas heating devices used in baking ovens.

[0010] In some examples of this invention, the portion of the heat exchange structure located within the gas flow channel extends along the extension direction of the gas flow channel.

[0011] In some examples of this invention, the portion of the heat exchange structure located within the gas flow channel has a spiral structure that extends along the direction of the gas flow channel.

[0012] In some examples of this utility model, the gas heating device further includes: a second body, which is sleeved on the first body, the second body and the first body together defining a temperature-conducting space, a second heat exchange medium in the temperature-conducting space, a heat exchange structure passing through the temperature-conducting space, and at least a portion of the heat exchange channel located in the temperature-conducting space.

[0013] In some examples of this utility model, the second body and the first body are integrally formed.

[0014] In some examples of this utility model, the gas heating device further includes: a heat insulation layer, which is sleeved on the second body.

[0015] In some examples of this utility model, the heat exchange structure is a heat exchange tube, which defines a heat exchange flow channel.

[0016] In some examples of this utility model, the heat exchange structure has a structural inlet section and a structural outlet section, the heat exchange flow channel connects the structural inlet section and the structural outlet section, and the structural inlet section and the structural outlet section are located outside the first body.

[0017] In some examples of this utility model, the inlet section of the structure is provided with a first check valve, and / or the outlet section of the structure is provided with a second check valve.

[0018] The baking oven according to a second aspect embodiment of the present invention includes the gas heating device for the baking oven described above.

[0019] Additional aspects and advantages of this invention 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 the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a schematic diagram of the structure of a gas heating device according to an embodiment of the present utility model;

[0022] Figure 2 This is a cross-sectional view of a gas heating device according to an embodiment of the present utility model.

[0023] Figure label:

[0024] Gas heating device 100;

[0025] First body 200; Gas flow channel 210;

[0026] Heat exchange structure 300; heat exchange channel 310; structural inlet section 320; structural outlet section 330;

[0027] Second body 400;

[0028] Temperature conduction space 500;

[0029] 600mm insulation layer. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] The following is for reference. Figures 1-2 This invention describes a gas heating device 100 for an oven according to an embodiment of the present invention. A battery cell is disposed inside the oven, which is used to dry the battery cell.

[0032] like Figure 1 , Figure 2 As shown, a gas heating device 100 for an oven according to a first aspect embodiment of the present invention includes: a first body 200, the first body 200 having a gas flow channel 210 for gas to flow through; a heat exchange structure 300, at least a portion of the heat exchange structure 300 being located within the gas flow channel 210, the heat exchange structure 300 having a heat exchange channel 310 for a first heat exchange medium to flow through and at least a portion being located within the gas flow channel 210.

[0033] The first body 200 can be made of materials such as stainless steel or aluminum alloy, and can be constructed in the shape of a cylindrical tube or a square tube. The heat exchange structure 300 can be made of materials such as nickel alloy or copper. For example, nitrogen is used as the gas in this application. The first heat exchange medium can be a gas or a heat transfer oil, and can circulate in the heat exchange channel 310. This facilitates the transfer of heat from the first heat exchange medium to the gas flowing through the heat exchange structure 300, thereby allowing the gas heating device 100 to preheat the gas entering the chamber.

[0034] At least a portion of the heat exchange structure 300 is located within the gas flow channel 210. This facilitates contact between the gas and the heat exchange structure 300 within the gas flow channel 210 as the gas flows through it. This allows the first heat exchange medium to exchange heat with the gas through the heat exchange structure 300, thereby increasing the gas temperature within the gas flow channel 210. This reduces the risk of a sudden drop in cell temperature caused by the gas directly entering the baking oven, thus shortening the cell baking time, improving the cell baking efficiency, ensuring cell performance, improving cell quality, and ultimately reducing the defect rate of the cells.

[0035] At least a portion of the heat exchange structure 300 is located within the gas flow channel 210, which facilitates heat exchange between the gas in the gas flow channel 210 and the heat exchange structure 300. This promotes uniform heating of the gas in the gas flow channel 210, thereby ensuring consistent heating of the battery cell during the baking process. It also helps reduce uneven temperature control by the gas heating device 100, thus improving the consistency and stability of the battery cell and reducing the energy consumption of the gas heating device 100. Furthermore, the fact that at least a portion of the heat exchange structure 300 directly exchanges heat with the gas in the gas flow channel 210 reduces the heat transfer path and thus minimizes heat loss.

[0036] Compared with traditional heating elements, the gas heating device 100 can reduce energy consumption, thereby reducing its operating costs. The heat exchange structure 300 of this application has no complex or easily damaged components (such as heating elements), and the first heat exchange medium in the heat exchange channel 310 circulates stably, which helps reduce the risk of damage to the heat exchange structure 300, reduces maintenance and replacement work, minimizes downtime of the gas heating device 100, ensures continuous battery cell production, and reduces maintenance workload and costs, thus reducing the overall production and operating costs of the enterprise.

[0037] According to some embodiments of this utility model, such as Figure 2 As shown, the portion of the heat exchange structure 300 located within the gas flow channel 210 extends along the extension direction of the gas flow channel 210.

[0038] In one embodiment, the portion of the heat exchange structure 300 located within the gas flow channel 210 is a straight tube extending along the extension direction of the gas flow channel 210. In another embodiment, the portion of the heat exchange structure 300 located within the gas flow channel 210 has a spiral structure extending along the extension direction of the gas flow channel 210. This extension of the heat exchange structure 300 within the gas flow channel 210 along the extension direction of the gas flow channel 210 increases the contact area between the gas and the heat exchange structure 300 as the gas flows through the gas flow channel 210, and prolongs the contact time between the gas and the heat exchange structure 300, thereby improving the heat exchange efficiency between the gas and the first heat exchange medium within the gas flow channel 210. Compared to the heat exchange structure 300 in the gas flow channel 210 extending in a direction perpendicular to the extension direction of the gas flow channel 210, the heat exchange structure 300 in the gas flow channel 210 extending in the extension direction of the gas flow channel 210 helps to reduce the obstruction area of ​​the heat exchange structure 300 on the gas, and helps to reduce the obstruction force of the heat exchange structure 300 on the gas, thereby helping to stabilize the gas flow rate.

[0039] According to some embodiments of this utility model, such as Figure 2 As shown, the portion of the heat exchange structure 300 located within the gas flow channel 210 has a spiral structure that extends along the extension direction of the gas flow channel 210.

[0040] The heat exchange structure 300 located in the gas flow channel 210 has a spiral structure that extends along the extension direction of the gas flow channel 210. This is beneficial to further increase the contact area between the gas and the heat exchange structure 300 when the gas flows through the gas flow channel 210, and to further extend the contact time between the gas and the heat exchange structure 300. This is beneficial to further improve the heat exchange efficiency between the gas and the first heat exchange medium in the gas flow channel 210, and thus to make the gas in the gas flow channel 210 heated evenly.

[0041] According to some embodiments of this utility model, such as Figure 2 As shown, the gas heating device further includes: a second body 400, which is sleeved on the first body 200. The second body 400 and the first body 200 together define a temperature-conducting space 500. The temperature-conducting space 500 contains a second heat exchange medium. A heat exchange structure 300 passes through the temperature-conducting space 500. At least a portion of the heat exchange channel 310 is located within the temperature-conducting space 500.

[0042] The second body 400 can be made of materials such as stainless steel or aluminum alloy, and the second heat exchange medium can be a gas or heat transfer oil. As an example, the second heat exchange medium can circulate in the heat exchange channel 310. As another example, the temperature-conducting space 500 is a closed space containing the second heat exchange medium. The presence of the second heat exchange medium in the temperature-conducting space 500 facilitates the transfer of heat to the first body 200, thereby enhancing the preheating effect of the gas heating device 100 on the gas entering the baking oven, ensuring uniform heating of the gas flowing through the channel 210. The temperature-conducting space 500 allows the second heat exchange medium to uniformly and stably transfer heat to all areas of the first body 200 and the gas flowing through the channel 210, resulting in uniform and stable heating of the gas in each area of ​​the channel 210. This also allows for more uniform temperature control by the gas heating device 100, leading to consistent heating of the battery cells during baking and improving the quality and consistency of the battery cells.

[0043] According to some embodiments of this utility model, such as Figure 2 As shown, the second body 400 and the first body 200 are integrally formed.

[0044] The first body 200 and the second body 400 can be integrally formed by methods such as mold casting and stamping. Integral forming of the first body 200 and the second body 400 helps to reduce the gap between them, improves the sealing performance of the heat-conducting space 500, and thus reduces the risk of leakage of the second heat exchange medium or intrusion of external impurities into the heat-conducting space 500. Compared to a separate structure, integral forming of the first body 200 and the second body 400 reduces assembly steps and time, thereby improving assembly efficiency.

[0045] According to some embodiments of this utility model, such as Figure 2 As shown, the gas heating device also includes: a heat insulation layer 600, which is fitted onto the second body 400.

[0046] The heat insulation layer 600 can be made of materials such as glass wool or aluminum silicate fiber. As one embodiment, the heat insulation layer 600 can be constructed as a hollow cylindrical tube, with its inner diameter matching the outer diameter of the second body 400, allowing it to be directly fitted onto the outer surface of the second body 400. As another embodiment, the heat insulation layer 600 can be constructed as multiple semi-circular annular heat insulation components, each with an inner curvature matching the outer diameter of the second body 400. These multiple semi-circular annular heat insulation components are spliced ​​together to form a complete annular heat insulation layer 600, allowing it to be fitted onto the outer surface of the second body 400. As one embodiment, the heat insulation layer 600 is fitted onto the second body 400, adhering to its outer surface. As another embodiment, the heat insulation layer 600 is fitted onto the second body 400, forming an insulating space between them.

[0047] The insulation layer 600 helps reduce the risk of heat conduction, convection, and radiation from the gas heating device 100 to the external environment, reduces heat loss from the gas heating device 100, improves the temperature stability of the gas heating device 100, facilitates precise and uniform temperature control of the heated gas by the gas heating device 100, and maximizes the heating of the gas flowing through the gas channel 210, thereby improving heat utilization, energy efficiency, and reducing operating costs.

[0048] According to some embodiments of this utility model, such as Figure 1 , Figure 2 As shown, the heat exchange structure 300 is a heat exchange tube, which defines the heat exchange flow channel 310.

[0049] When the first heat exchange medium flows in the heat exchange channel 310 of the heat exchange tube, heat can be transferred from the first heat exchange medium to the heat exchange tube. The gas flowing through the channel 210 can directly contact the outer wall of the heat exchange tube located in the gas flow channel 210. This is beneficial for heat to be transferred directly from the tube wall of the heat exchange tube to the gas flowing through the channel 210, which helps to reduce the heat transfer path from the heat exchange structure 300 to the gas flowing through the channel 210, thereby reducing heat transfer loss and improving heat transfer efficiency. In addition, the heat exchange tube has a simple structure and low price, which helps to simplify the construction of the heat exchange structure 300 and facilitates the production and manufacturing of the heat exchange structure 300. At the same time, it helps to reduce the manufacturing cost of the gas heating device 100.

[0050] According to some embodiments of this utility model, such as Figure 1 As shown, the heat exchange structure 300 has a structural inlet section 320 and a structural outlet section 330. The heat exchange channel 310 connects the structural inlet section 320 and the structural outlet section 330, and the structural inlet section 320 and the structural outlet section 330 are located outside the first body 200.

[0051] The structural inlet section 320 defines the inlet of the first medium, and the structural outlet section 330 defines the outlet of the first medium. For example, the heat exchange structure 300 passes through the first body 200, the second body 400, and the insulation layer 600, with the structural inlet section 320 and the structural outlet section 330 located on the outer surface of the insulation layer 600. The structural inlet section 320 and the structural outlet section 330 can be directly connected to the heat source pipeline, which simplifies the assembly process of connecting the gas heating device 100 to the heat source pipeline.

[0052] Specifically, the first heat exchange medium flows into the first medium inlet through the heat source pipeline, the first heat exchange medium flows into the heat exchange channel 310 along the first medium inlet, and the first heat exchange medium in the heat exchange channel 310 flows into the first medium outlet along the heat exchange channel 310, so that the first heat exchange medium flows out of the heat exchange structure 300 through the first medium outlet.

[0053] According to some embodiments of this utility model, such as Figure 1 As shown, the inlet section 320 of the structure is equipped with a first check valve, and / or the outlet section 330 of the structure is equipped with a second check valve.

[0054] In one embodiment, the structural inlet section 320 is equipped with a first one-way valve. In another embodiment, the structural outlet section 330 is equipped with a second one-way valve. The first one-way valve ensures that the first heat exchange medium can only enter the heat exchange channel 310 from the structural inlet section 320, preventing it from flowing out of the channel 310 and effectively reducing the risk of backflow. The second one-way valve ensures that the first heat exchange medium can only flow out of the structural outlet section 330, preventing substances outside the heat exchange structure 300 from entering it. Both the first and second one-way valves help reduce the risk of backflow of the first heat exchange medium, thus promoting unidirectional flow of the first heat exchange medium within the heat exchange channel 310, improving the flow stability of the first heat exchange medium, and consequently enhancing the stability of the heat exchange process between the first heat exchange medium and the gas flowing through the channel 210.

[0055] The baking oven according to a second aspect of the present invention includes the gas heating device 100 for baking oven described in the above embodiment.

[0056] The baking oven mainly consists of a chamber, a ventilation system, and a gas heating device 100 for use in the baking oven. The baking oven can utilize exhaust gas from the baking process, waste heat from the factory, or heat generated by a boiler as a heat source. Through a heat exchange mechanism, the heat source can transfer heat to the first and second heat exchange media within the heat exchange channel 310 and the temperature conduction space 500, which helps reduce electricity consumption and thus lowers energy costs. By placing the gas heating device 100 of this application within the baking oven, the risk of a sudden drop in battery cell temperature caused by direct gas entry into the baking oven is reduced, thus lowering the energy consumption of the baking oven and reducing maintenance workload and costs.

[0057] The gas heating device 100 for baking oven and other components and operation of the baking oven according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0058] 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 the present invention. 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.

[0059] Although embodiments of the present invention 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 the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A gas heating device for an oven, characterized in that, include: A first body having a gas flow channel for gas to flow through; A heat exchange structure, at least a portion of which is located within the gas flow channel, the heat exchange structure having a heat exchange channel for a first heat exchange medium to flow through and at least a portion of which is located within the gas flow channel.

2. The gas heating device for a baking oven according to claim 1, characterized in that, The portion of the heat exchange structure located within the gas flow channel extends along the direction of the gas flow channel.

3. The gas heating device for a baking oven according to claim 2, characterized in that, The portion of the heat exchange structure located within the gas flow channel has a spiral structure that extends along the direction of the gas flow channel.

4. The gas heating device for a baking oven according to claim 1, characterized in that, The gas heating device further includes: a second body, which is sleeved on the first body, the second body and the first body together defining a temperature-conducting space, the temperature-conducting space containing a second heat exchange medium, the heat exchange structure passing through the temperature-conducting space, and at least a portion of the heat exchange channel located within the temperature-conducting space.

5. The gas heating device for a baking oven according to claim 4, characterized in that, The second body and the first body are integrally formed.

6. The gas heating device for a baking oven according to claim 4, characterized in that, The gas heating device further includes a heat insulation layer, which is sleeved on the second body.

7. The gas heating device for a baking oven according to any one of claims 1-6, characterized in that, The heat exchange structure is a heat exchange tube, which defines the heat exchange flow channel.

8. The gas heating device for a baking oven according to any one of claims 1-6, characterized in that, The heat exchange structure has a structural inlet section and a structural outlet section, the heat exchange channel connects the structural inlet section and the structural outlet section, and the structural inlet section and the structural outlet section are located outside the first body.

9. The gas heating device for a baking oven according to claim 8, characterized in that, The inlet section of the structure is equipped with a first check valve, and / or The outlet section of the structure is equipped with a second one-way valve.

10. A baking oven, characterized in that, Includes a gas heating device for an oven according to any one of claims 1-9.

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