Drying oven of coating machine

Abstract

The utility model discloses a coating machine drying oven which comprises at least one first drying oven, at least one second drying oven, at least one third drying oven and at least one second drying oven, wherein an air inlet used for supplying air to the coating machine drying oven is formed in at least one first drying oven; the exhaust pipe is communicated with the first drying oven; at least one fresh air branch pipe is arranged on the first drying oven, air outside the drying oven can enter the drying oven through the fresh air branch pipe, and a filter element is arranged in the fresh air branch pipe. The coating machine oven can absorb high-temperature gas in the area outside the oven to be used as fresh air, so that the energy consumption required for heating the fresh air is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coating machines, in particular to a coating machine oven. Background Art

[0002] At present, in the industry, the energy consumption and operating costs of the coating machine oven heating and fresh air supply equipment in the coating process account for 40% of the energy consumption of the entire battery production process, which is a high-energy consumption process.

[0003] During the drying process of the coating machine oven, in order to ensure that the exhaust gas and water vapor generated during the drying process can be discharged from the oven, the exhaust volume of each oven section must be much greater than the fresh air volume when debugging the parameters. Therefore, the inside of the oven will be in a negative pressure state. The oven in a negative pressure state will draw fresh air into the oven, and the fresh air needs to be reheated to the preset temperature. During this process, the device for heating the oven consumes a lot of energy. For example, CN215235623U, published on December 21, 2021, is a voltage stabilizer on the outside of a coating machine oven. This mechanism uses a heat circulation fan to continuously provide fresh air to the oven, and a heating chamber is set between the heat circulation fan and the oven to heat the fresh air. In order to maintain the temperature in the oven, the heating chamber needs to work uninterruptedly, which consumes a lot of energy.

[0004] The environment of the oven area belongs to a non-clean room. In order to ensure the isolation of the non-clean room from the clean room, the oven area at the actual production site is isolated into a closed environment space. At the same time, the coating oven is a steam heating equipment. The operation of the steam high-temperature equipment in a closed environment will cause a high temperature environment in the oven area. During the actual production process on site, the temperature outside the oven area reaches about 70 degrees. High ambient temperature will reduce the service life of the electrical components on the oven, and at the same time increase the energy consumption of the exhaust fan and fresh air fan on the oven. Utility Model Content

[0005] In order to overcome the defects in the prior art, the utility model provides a coating machine oven, which can utilize high-temperature unclean gas in the area outside the oven, thereby reducing the energy consumption of exhaust components and fresh air ducts.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a coating machine oven, comprising:

[0007] at least one first oven, and at least one of the first ovens is provided with an air inlet;

[0008] an exhaust duct, the exhaust duct being in communication with the first oven;

[0009] A fresh air branch pipe is provided on the first oven, the fresh air branch pipe connects the first oven with an area outside the oven, and the fresh air branch pipe is provided with a filter element.

[0010] The coating machine oven is a steam heating device. The operation of the steam high-temperature equipment in a closed environment will increase the temperature of the area outside the oven. Through the above technical solution, the first oven can directly obtain high-temperature fresh air from the area outside the oven through the fresh air branch pipe, thereby reducing the energy consumption of heating the fresh air.

[0011] Furthermore, the air inlet is connected to a negative pressure cabin, which is used to adjust the air pressure in the oven.

[0012] Furthermore, the negative pressure cabin is provided with a negative pressure cabin air duct, which connects the negative pressure cabin with the area outside the oven, and a filter element is provided in the negative pressure cabin air duct. During the drying process of the electrode, the inside of the oven is in a negative pressure state. At this time, the negative pressure cabin will continuously absorb low-temperature fresh air from the clean room, causing the temperature inside the oven to drop and increase the energy consumption for heating. Therefore, a negative pressure cabin air duct connecting the negative pressure cabin and the area outside the oven is added to the negative pressure cabin, so that the negative pressure cabin can also directly absorb high-temperature air from the area outside the oven.

[0013] Furthermore, a rotary fan is provided in the negative pressure cabin air duct, and the rotary fan is used to provide power for the negative pressure cabin air duct to absorb high temperature wind from the outside area of ​​the oven.

[0014] Furthermore, the negative pressure cabin is connected to the clean room, and clean air in the clean room is sucked into the oven through the negative pressure cabin, so as to ensure that the cleanliness of the air entering the oven is qualified and avoid pitting of the electrode during the drying process.

[0015] Furthermore, it comprises at least two first ovens connected in sequence, one of which is provided with the air inlet. A plurality of first ovens connected in sequence can satisfy the requirement of drying a plurality of electrodes at the same time.

[0016] Furthermore, a heat exchange device is provided in the exhaust pipe, and the heat exchange device is used to recover heat energy in the exhaust gas.

[0017] Furthermore, it comprises a fresh air duct, which is connected with the heat exchange device and the first oven in sequence, and a filter element is arranged in the fresh air duct. The fresh air in the fresh air duct is heated by the heat exchange device and then sent to the first oven, so that the heat energy in the exhaust gas is recovered and utilized.

[0018] Furthermore, it includes a second oven and a fresh air duct connected to the second oven, the second oven is connected to the innermost first oven, the fresh air duct is connected to the heat exchange device and the second oven in sequence, and a filter element is arranged in the fresh air duct. In the drying process of the electrode, the temperature in the second oven located on the inner side is generally higher than that in the first oven located on the outer side. The temperature in the first oven on the outer side is generally set at about 80 degrees, while the temperature outside the oven is generally about 70 degrees, which meets the temperature requirement of the first oven but does not meet the requirement of the second oven with a higher temperature. Therefore, the fresh air of the second oven is provided by the fresh air duct and the heat exchange device.

[0019] Furthermore, it comprises a closed box, wherein the first oven and the second oven are both arranged in the closed box. The area outside the oven is between the closed box and the first oven and the second oven. The area outside the oven is affected by the steam heating device, and the temperature is about 70 degrees.

[0020] By means of the above technical solution, the beneficial effects of the utility model are as follows:

[0021] 1. In the present application, a fresh air branch pipe is provided to connect the first oven and the area outside the oven, and a filter element capable of filtering unclean gas into clean gas is provided in the fresh air branch pipe, so that the first oven can directly obtain high-temperature clean air from the area outside the oven, thereby reducing the energy consumption required to heat the fresh air;

[0022] 2. In this application, the high-temperature air in the area outside the oven is absorbed by the fresh air branch pipe, which can reduce the ambient temperature of the area outside the oven, thereby increasing the service life of the electrical components in the coating machine oven;

[0023] 3. In this application, a heat exchange device is provided to recover heat energy in the exhaust gas, and the recovered heat energy is used to heat the fresh air to achieve the purpose of saving resources.

[0024] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of the coating machine oven in the embodiment of the utility model;

[0027] Figure 2 It is a structural schematic diagram of a coating machine oven in an embodiment of the utility model in which a fresh air duct is not provided;

[0028] Figure 3 It is a structural schematic diagram of a coating machine oven in an embodiment of the utility model in which no fresh air branch pipe is provided.

[0029] The figure numbers of the above drawings are: 1. first oven; 11. fresh air branch pipe; 111. second filter element; 12. negative pressure cabin; 121. negative pressure cabin air duct; 122. third filter element; 2. second oven; 31. exhaust duct; 32. heat exchanger; 4. fresh air duct; 41. first filter element; 5. clean room; 6. closed box. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] It should be noted that in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0032] Example: Combination Figure 1-3 As shown, this embodiment discloses a coating machine oven, comprising:

[0033] The first oven 1, the four first ovens 1 are connected in pairs to form two groups of first oven groups, one of the first ovens 1 in the first oven group is connected to a negative pressure cabin 12, and the other first oven 1 is connected to the second oven 2. The negative pressure cabin 12 is connected to the clean room 5, and the clean room 5 can continuously provide clean air for the oven. Because during the drying process of the coater electrode, if the cleanliness of the wind entering the oven is unqualified and there are many foreign objects, it will cause problems such as electrode pits and particles on the surface during the drying process, and lithium precipitation will occur during the subsequent process of componentization. Therefore, the present application sets a clean room 5 for the coater oven to ensure that the cleanliness of the fresh air is qualified.

[0034] The first oven 1 and the second oven 2 are both connected to an exhaust assembly, and the exhaust assembly includes an exhaust pipe 31 connected to the first oven 1 and the second oven 2, and a heat exchange device connected to the exhaust pipe, and the heat exchange device includes a heat exchanger 32, and the heat exchanger 32 is used to recover the heat of the exhaust gas discharged from the ovens. The recovered heat is used to heat the fresh air injected into the ovens.

[0035] The second oven 2 is connected with a fresh air pipe 4, and the fresh air pipe 4 is connected with the heat exchanger 32 and the second oven 2 in sequence along the flow direction of the fresh air. When the fresh air passes through the heat exchanger 32, the heat exchanger 32 heats the fresh air with the heat recovered from the exhaust gas, so that the temperature of the fresh air reaches 80° and the fresh air is sent into the second oven 2. The fresh air pipe is provided with a first filter element 41, and the first filter element 41 is used to filter the fresh air so that the cleanliness of the fresh air entering the oven is qualified.

[0036] In order to ensure that the non-clean room is isolated from the clean room 5, the first oven 1 and the second oven 2 are wrapped by a closed box 6, and the space between the closed box 6 and the first oven 1 and the second oven 2 is the oven outer area. Because the coater is a steam heating device, the operation of the steam high-temperature equipment in a closed environment will cause a high temperature environment in the oven outer area. During operation, the temperature of the oven outer area is about 70 degrees.

[0037] The first oven 1 is connected to a fresh air branch pipe 11, which connects the inner cavity of the first oven 1 with the area outside the oven, so that the first oven 1 can directly absorb high-temperature air from the area outside the oven. A second filter element 111 is arranged in the fresh air branch pipe 11, and the second filter element 111 is used to filter the high-temperature air in the area outside the oven to make it meet the cleanliness requirements.

[0038] Through the above technical solution, the first oven 1 can directly obtain fresh air from the area outside the oven through the fresh air branch pipe 11, thereby reducing the amount of fresh air obtained through the fresh air pipe 4, thereby reducing the energy consumption required to heat the fresh air.

[0039] In addition, high ambient temperature will reduce the service life of electrical components in the oven and increase the energy consumption of the exhaust fan and fresh air fan in the oven. The present application absorbs the high-temperature air in the area outside the oven through the fresh air branch pipe 11, which can reduce the ambient temperature in the area outside the oven, thereby increasing the service life of electrical components in the coating machine oven.

[0040] The negative pressure cabin 12 is connected to a negative pressure cabin air duct 121, and the negative pressure cabin air duct 121 connects the inner cavity of the negative pressure cabin 12 and the outer area of ​​the oven, so that the negative pressure cabin 12 can directly absorb high-temperature air from the outer area of ​​the oven. A rotary fan is provided in the negative pressure cabin air duct 121, and the rotary fan is used to provide power for the negative pressure cabin air duct 121 to absorb high-temperature air from the outer area of ​​the oven. It should be noted that a third filter element 122 is provided in the negative pressure cabin air duct 121, and the third filter element 122 is used to filter the high-temperature air absorbed by the negative pressure cabin air duct 121 to meet the cleanliness requirements. During the drying process of the electrode, the inside of the oven is in a negative pressure state. At this time, the negative pressure cabin 12 will continuously absorb low-temperature fresh air from the clean room 5, causing the temperature inside the oven to drop and increasing the heating energy consumption. Therefore, the present application adds a negative pressure cabin air duct 121 to the negative pressure cabin 12, which connects the negative pressure cabin 12 and the area outside the oven, so that the negative pressure cabin 12 can also directly absorb high-temperature air from the area outside the oven, thereby reducing the amount of low-temperature fresh air obtained, so as to reduce heating energy consumption.

[0041] Through the above solution, the two second ovens 2 are connected to the same fresh air duct 4, and the four first ovens 1 are connected to the same exhaust assembly, thereby fully utilizing the power consumption of the fresh air duct 4 and the exhaust assembly.

[0042] It should be noted that in the drying process of the electrode, the temperature inside the second oven 2 is generally higher than that inside the first oven 1. The temperature inside the first oven 1 is generally set at around 80 degrees, while the temperature outside the oven is generally around 70 degrees, which meets the temperature requirement of the first oven 1 but does not meet the requirement of the second oven 2 with a higher temperature. Therefore, the fresh air of the second oven 2 is provided by the fresh air duct 4 and the heat exchanger 32.

[0043] In another possible embodiment, if Figure 2 As shown, the fresh air branch pipe 11 is provided on the first oven 1 and the second oven 2, and the fresh air in the ovens is obtained from the area outside the ovens.

[0044] In another possible embodiment, if Figure 3 As shown, the first oven 1 and the second oven 2 are both connected to the fresh air pipe 4, and the fresh air branch pipe 11 is provided on the first oven 1. It should be noted that in this solution, the fresh air branch pipe 11 is provided with an opening and closing device. Through this solution, when the heat recovered by the heat exchanger 32 is sufficient, the fresh air pipe 4 can be used to provide fresh air for the first oven 1.

[0045] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A coating machine oven, characterized in that, include: at least one first oven, wherein at least one of the first ovens is provided with an air inlet for supplying air to the coater oven; an exhaust duct, the exhaust duct being in communication with the first oven; Fresh air branch pipe: at least one fresh air branch pipe is provided on the first oven, and the gas outside the oven can enter the oven through the fresh air branch pipe, and a filter element is provided in the fresh air branch pipe.

2. The coating machine oven according to claim 1, characterized in that: The air inlet is connected with a negative pressure cabin.

3. The coating machine oven according to claim 2, characterized in that: The negative pressure cabin is provided with a negative pressure cabin air duct, the negative pressure cabin air duct connects the negative pressure cabin with the area outside the oven, and a filter element is provided in the negative pressure cabin air duct.

4. The coating machine oven according to claim 3, characterized in that: A rotary fan is arranged in the air duct of the negative pressure cabin.

5. The coating machine oven according to claim 2, characterized in that: The negative pressure cabin is connected to the clean room.

6. The coating machine oven according to claim 1 or 4, characterized in that: It comprises at least two first ovens which are connected in sequence, and one of the first ovens is provided with the air inlet.

7. The coating machine oven according to claim 6, characterized in that: A heat exchange device is arranged in the exhaust pipe.

8. The coating machine oven according to claim 7, characterized in that: It comprises a fresh air duct, which is connected with the heat exchange device and the first oven in sequence, and a filter element is arranged in the fresh air duct.

9. The coating machine oven according to claim 7, characterized in that: It includes a second oven and a fresh air duct connected to the second oven, the second oven is connected to the innermost first oven, the fresh air duct is connected to the heat exchange device and the second oven in sequence, and a filter element is arranged in the fresh air duct.

10. The coating machine oven according to claim 9, characterized in that: It comprises a closed box, wherein the first oven and the second oven are both arranged in the closed box.

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