Drying oven temperature control structure and coating machine

Abstract

The utility model provides a drying oven temperature control structure and a coating machine. The drying oven temperature control structure comprises a drying chamber; the two ends of the circulating air duct are located in the drying area of the drying chamber, and a parallel air duct is partially or completely formed; the parallel air duct comprises a first air duct and a second air duct, and a heat exchanger is arranged on the first air duct; and the regulation and control assembly is arranged on the circulating air duct and can regulate the ventilation ratio of the first air duct to the second air duct. According to the arrangement, the ventilation proportion of the first air duct and the second air duct is controlled through the regulation and control assembly, the air outlet temperature of the circulating air duct can be adjusted, the steam amount of the heat exchanger does not need to be controlled, and adjustment is convenient, stable and reliable; only part of air passes through the heat exchanger in the drying process, so that the wind resistance loss is reduced, and the energy consumption is reduced; when cooling is needed, circulating air does not need to pass through the heat exchanger, and the cooling effect is good.

Description

Technical Field

[0001] The present application relates to the field of battery processing technology, and in particular to an oven temperature control structure and a coating machine. Background Art

[0002] In the production process of new energy lithium batteries, the coating process of the coater is one of the most important key processes, and oven drying is a very critical process link in the coating process. The drying process is divided into preheating stage, heating stage, constant drying rate stage and speed reduction stage. The requirements for air volume, wind speed and air temperature are different in different drying stages, so the oven needs to have temperature regulation and control capabilities.

[0003] At present, the oven temperature control of the coating machine is to control the steam volume of the heat exchanger through an electric proportional valve, thereby adjusting the oven temperature. However, there are the following problems: 1. Under different heat exchange requirements, all circulating air in the heating room needs to pass through the heat exchanger, resulting in large wind resistance losses. 2. The temperature control linearity of the steam proportional valve is poor and overshoot is prone to occur; frequent adjustment of the proportional valve reduces reliability and causes large fluctuations in oven temperature. 3. When the oven needs to be cooled, the circulating air volume will still pass through the heat exchanger, and cooling takes a long time, affecting the production rhythm. Utility Model Content

[0004] In view of this, the present application provides an oven temperature control structure and a coating machine, which have small wind resistance, fast cooling, easy regulation, and are stable and reliable.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] An oven temperature control structure, comprising:

[0007] Drying room;

[0008] The circulating air duct has two ends located in the drying area of ​​the drying chamber and partially or completely forms a parallel air duct; the parallel air duct includes a first air duct and a second air duct, and a heat exchanger is arranged on the first air duct;

[0009] The regulating component is arranged on the circulating air duct and is capable of adjusting the ventilation ratio of the first air duct and the second air duct.

[0010] Optionally, a portion of the circulating air duct forms the parallel channel;

[0011] A first converging air duct is arranged upstream of the parallel air ducts, and / or a second converging air duct is arranged downstream of the parallel air ducts.

[0012] Optionally, the control component includes:

[0013] A fan, arranged on the first converging air duct or the second converging air duct;

[0014] The first air valve and the second air valve are respectively arranged on the first air duct and the second air duct, so as to adjust the ventilation ratio of the first air duct and the second air duct by adjusting the opening of the first air valve and the second air valve.

[0015] Optionally, the control component includes:

[0016] A plurality of fans are respectively arranged on the first air duct and the second air duct, so that the ventilation ratio of the first circulation air duct and the second circulation air duct can be adjusted by adjusting the frequency of the plurality of fans.

[0017] Optionally, the control component includes:

[0018] A plurality of fans are respectively arranged on the first air duct and the second air duct;

[0019] The first air valve and the second air valve are respectively arranged on the first air duct and the second air duct, so as to adjust the ventilation ratio of the first air duct and the second air duct by adjusting the opening of the first air valve and the second air valve.

[0020] Optionally, a sensing component is further included, for sensing circulating air parameters of the drying chamber;

[0021] The regulating component is communicatively connected to the sensing component so as to be able to adjust the ventilation ratio of the first circulating air duct and the second circulating air duct according to the circulating air parameter.

[0022] Optionally, the sensing component includes at least one of a temperature sensor, a wind speed sensor and a solvent concentration sensor.

[0023] Optionally, the temperature sensor and the wind speed sensor are arranged at the air outlet end of the circulating air duct, and the solvent concentration sensor is arranged at the air inlet end of the circulating air duct.

[0024] Optionally, a heating chamber is included, and the first air duct, the second air duct, the heat exchanger and the regulating component are arranged in the heating chamber.

[0025] Optionally, the drying chamber is provided with a first drying member and a second drying member connected to the air outlet end of the circulating air duct, and the first drying member and the second drying member are respectively used to dry the two coated sides.

[0026] A coating machine comprises an oven temperature control structure as described in any one of the above items.

[0027] The oven temperature control structure and coating machine provided by the present application, when in use, the circulating air is heated by the heat exchanger in the first air duct to form hot air, the circulating air passes through the second air duct without passing through the heat exchanger to maintain the original temperature, the air blown out from the first air duct and the second air duct is mixed and then blown out from the air outlet end of the circulating air duct, so that the outlet air temperature of the circulating air duct is the average of the outlet air temperatures of the first air duct and the second air duct, and then by controlling the ventilation ratio of the first air duct and the second air duct, the total outlet air temperature of the circulating air duct can be controlled to adjust the drying outlet air temperature of the drying chamber. In this way, the outlet air temperature of the circulating air duct can be adjusted by controlling the ventilation ratio of the first air duct and the second air duct through the regulating component, without controlling the steam volume of the heat exchanger, and the adjustment is convenient, stable and reliable; during the drying process, only a part of the air passes through the heat exchanger, which is conducive to reducing wind resistance loss and energy consumption; when cooling is required, the circulating air does not need to pass through the heat exchanger, and the cooling effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application 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 embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0029] Figure 1 This is a schematic diagram of a temperature control structure of an oven shown in the first embodiment;

[0030] Figure 2 This is a schematic diagram of a temperature control structure of an oven according to a second embodiment;

[0031] Figure 3 This is a schematic diagram of the oven temperature control structure shown in the third embodiment.

[0032] In the figure: 1. drying chamber; 11. first drying element; 12. second drying element; 13. solvent concentration sensor; 2. heating chamber; 21. first air valve; 22. second air valve; 23. heat exchanger; 24. fan; 25 wind speed sensor; 26. temperature sensor. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] like Figure 1-Figure 3As shown, an embodiment of the present application provides a temperature control structure of an oven, including a drying chamber 1, a circulating air duct and a regulating component.

[0035] The circulating air duct has an air inlet end and an air outlet end, both of which are located in the drying area of ​​the drying chamber 1. The circulating air duct forms a flowing circulating air in the drying area of ​​the drying chamber 1 to dry the coating in the drying area. For example, the air inlet end and the air outlet end of the circulating air duct are located on both sides of the drying area of ​​the drying chamber 1, respectively.

[0036] Part or all of the circulating air duct forms a parallel air duct, and the parallel air duct can be set as the whole of the circulating air duct or a part of the circulating air duct. For example, a converging air duct can be set upstream and / or downstream of the parallel air duct to form a circulating air duct. During the flow of wind, the wind first flows through the converging air duct, then flows in parallel in multiple air ducts of the parallel air duct, and finally converges into the converging air duct. Moreover, the parallel air duct has at least two air ducts arranged in parallel, for example, the parallel air duct has a first air duct and a second air duct arranged in parallel, wherein a heat exchanger 23 is arranged in the first air duct, and the wind in the first air duct can be heated by the heat exchanger 23, and the heat exchanger 23 is not arranged in the second air duct, and the wind in the second air duct will not pass through the heat exchanger 23 for heat exchange, and will not be affected by the heat and resistance of the heat exchanger 23, and has good fluidity, which is conducive to timely temperature control of the circulating air.

[0037] The regulating component is arranged on the circulating air duct (which can be a parallel air duct or a parallel air duct and a converging air duct), and is used to adjust the ventilation ratio of the first air duct and the second air duct. When in use, the circulating air is heated by the heat exchanger 23 in the first air duct to form hot air, and the circulating air passes through the second air duct without passing through the heat exchanger 23 to maintain the original temperature. The air blown out of the first air duct and the second air duct is mixed and then blown out from the air outlet end of the circulating air duct, so that the outlet air temperature of the circulating air duct is the average of the outlet air temperatures of the first air duct and the second air duct, and then by controlling the ventilation ratio of the first air duct and the second air duct, the total outlet air temperature of the circulating air duct can be controlled to achieve the adjustment of the drying outlet air temperature of the drying chamber 1.

[0038] With such arrangement, the outlet air temperature of the circulating air duct can be adjusted by controlling the ventilation ratio of the first air duct and the second air duct through the regulating component, without controlling the steam amount of the heat exchanger 23, and the adjustment is convenient, stable and reliable; during the drying process, only a part of the wind passes through the heat exchanger 23, which is beneficial to reduce wind resistance loss and energy consumption; when cooling is required, the circulating air does not need to pass through the heat exchanger 23, and the cooling effect is good.

[0039] In the present solution, a parallel air duct is partially provided in the circulating air duct, wherein a first converging air duct is provided upstream of the parallel air duct, and a second converging air duct is provided downstream of the parallel air duct, so that the circulating air passes through the first converging air duct, the parallel air duct and the second converging air duct in sequence. In this way, by adopting the form of first diversion and then converging, it is beneficial to connect the circulating air duct, reduce the use of pipelines, and save costs.

[0040] Of course, the first converging air duct may be provided only upstream of the parallel air duct, or the second converging air duct may be provided only downstream of the parallel air duct.

[0041] In the first embodiment, the control component includes a fan 24, a first air valve 21 and a second air valve 22. Figure 2 As shown, the fan 24 is arranged on the first converging air duct, the first air valve 21 and the heat exchanger 23 are arranged on the first air duct, and the second air valve 22 is arranged on the second air duct. During the drying operation, the circulating air from the drying chamber 1 is divided into two paths after passing through the fan 24, one of which passes through the first air valve 21 and the heat exchanger 23 on the first air duct; the other passes through the second air valve 22 on the second air duct (without passing through the heat exchanger 23). By adjusting the opening of the first air valve 21 and the second air valve 22 according to different heating requirements, the ventilation ratio of the first air duct and the second air duct can be changed, and then the air outlet temperature of the circulating air duct is adjusted to control the temperature in the drying chamber 1.

[0042] In the second embodiment, the control component includes a fan 24, a first air valve 21 and a second air valve 22. Figure 1 As shown, the fan 24 is arranged on the second converging air duct, the first air valve 21 and the heat exchanger 23 are arranged on the first air duct, and the second air valve 22 is arranged on the second air duct. During the drying operation, the circulating air from the drying chamber 1 is divided into two paths, one of which first passes through the first air valve 21 and the heat exchanger 23 on the first air duct, and then enters the fan 24; the other air first passes through the second air valve 22 on the second air duct (without passing through the heat exchanger 23), and then enters the fan 24. According to different heating requirements, the opening of the first air valve 21 and the second air valve 22 can be adjusted to change the ventilation ratio of the first air duct and the second air duct, thereby adjusting the air outlet temperature of the circulating air duct to control the temperature in the drying chamber 1.

[0043] In a third embodiment, the control component includes a plurality of fans 24, such as Figure 3As shown, the plurality of fans 24 include a first fan 24 and a second fan 24, the first fan 24 is arranged on the first air duct, and the second fan 24 is arranged on the second air duct. During drying operation, the circulating air from the drying chamber 1 is in two routes, one of which passes through the first fan 24 and the heat exchanger 23 on the first air duct; the other passes through the second fan 24 on the second air duct. According to different heating requirements, the ventilation ratio passing through the first air duct and the second air duct is adjusted by controlling the frequency of the first fan 24 and the second fan 24, and then adjusting the air outlet temperature of the circulating air duct to control the temperature in the drying chamber 1.

[0044] In addition, based on the third embodiment, the regulating component may further include a first air valve 21 and a second air valve 22, wherein the first air valve 21 is arranged on the first air duct, and the second air valve 22 is arranged on the second air duct. During drying operation, the circulating air from the drying chamber 1 is in two routes, wherein the air volume of one route passes through the first fan 24, the first air valve 21 and the heat exchanger 23 on the first air duct; the air volume of the other route passes through the second fan 24 and the second air valve 22 on the second air duct. According to different heating requirements, the frequency of the first fan 24 and the second fan 24 can be kept unchanged. By adjusting the opening of the first air valve 21 and the second air valve 22, the ventilation ratio passing through the first air duct and the second air duct can be adjusted, and then the air outlet temperature of the circulating air duct can be adjusted to control the temperature in the drying chamber 1.

[0045] In some embodiments, the oven temperature control structure includes a sensing component, which is used to sense the circulating air parameters of the drying chamber 1, including but not limited to wind speed, temperature, flow rate, solvent concentration and other parameters. The regulating component is connected to the sensing component in communication, and the regulating component can adjust the ventilation ratio of the first circulating air duct and the second circulating air duct according to the circulating air parameters obtained by the sensing component, which is conducive to timely and accurate regulation of the circulating air and improving the drying quality.

[0046] Among them, the sensing component includes at least one of the wind speed sensor 25, the temperature sensor 26 and the solvent concentration sensor 13. The circulating air parameters sensed by each sensor can provide data for the precise control of the air volume control component, improve the drying quality and reduce the operating energy consumption.

[0047] like Figure 1 As shown, the temperature sensor 26 and the wind speed sensor 25 are arranged at the outlet end of the circulating air duct, and are used to sense the inlet air temperature and wind speed in the drying chamber 1, which is conducive to accurately controlling the circulating air blown onto the coating. The solvent concentration sensor 13 is arranged at the inlet end of the circulating air duct, so that the data sensed by the solution concentration sensor 13 is close to the average data in the drying chamber 1, and the accuracy is high.

[0048] In some preferred embodiments, the temperature control structure of the oven includes a heating chamber 2, and the heating chamber 2 and the drying chamber 1 are two separate and independent chambers. For example, the oven is a split structure, one part of which is the heating chamber 2 and the other part is the drying chamber 1. The first air duct, the second air duct, the heat exchanger 23 and the regulating component are arranged in the heating chamber 2, and are independently arranged outside the drying chamber 1, thereby avoiding affecting the temperature of the drying chamber 1, which is conducive to improving the drying effect.

[0049] like Figure 1-3 As shown, a first drying member 11 and a second drying member 12 are provided in the drying chamber 1, and the first drying member 11 and the second drying member 12 are both connected to the air outlet end of the circulating air duct, so that the first drying member 11 and the second drying member 12 blow out the heated circulating air. The first drying member 11 and the second drying member 12 are respectively used to dry the two sides of the coating, which is conducive to improving the drying rate. For example, a plurality of drying ports are provided on the first drying member 11 and the second drying member 12, thereby improving the uniformity of drying.

[0050] The embodiment of the present application provides a coating machine, including the oven temperature control structure in the above embodiment. With such a configuration, the outlet temperature of the circulating air duct can be adjusted by controlling the ventilation ratio of the first air duct and the second air duct through the regulating component, without controlling the steam volume of the heat exchanger 23, and the adjustment is convenient, stable and reliable; during the drying process, only a part of the wind passes through the heat exchanger 23, which is conducive to reducing wind resistance loss and energy consumption; when cooling is required, the circulating air does not need to pass through the heat exchanger 23, and the cooling effect is good.

[0051] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0052] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0053] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0054] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0055] It should be understood that the qualifiers "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used to more clearly explain the technical solutions and cannot be used to limit the scope of protection of the present application.

[0056] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. An oven temperature control structure, characterized in that: include: Drying room; A circulating air duct, both ends of which are located in the drying area of ​​the drying chamber, and partially or completely form a parallel air duct; the parallel air duct includes a first air duct and a second air duct, and a heat exchanger is provided on the first air duct; The regulating component is arranged on the circulating air duct and is capable of adjusting the ventilation ratio of the first air duct and the second air duct.

2. The oven temperature control structure according to claim 1, characterized in that: Part of the circulation air duct forms the parallel air duct; A first converging air duct is arranged upstream of the parallel air ducts, and / or a second converging air duct is arranged downstream of the parallel air ducts.

3. The oven temperature control structure according to claim 2, characterized in that: The control components include: A fan, arranged on the first converging air duct or the second converging air duct; The first air valve and the second air valve are respectively arranged on the first air duct and the second air duct, so as to adjust the ventilation ratio of the first air duct and the second air duct by adjusting the opening of the first air valve and the second air valve.

4. The oven temperature control structure according to claim 1, characterized in that: The control components include: A plurality of fans are respectively arranged on the first air duct and the second air duct, so that the ventilation ratio of the first air duct and the second air duct can be adjusted by adjusting the frequencies of the plurality of fans.

5. The oven temperature control structure according to claim 1, characterized in that: The control components include: A plurality of fans are respectively arranged on the first air duct and the second air duct; The first air valve and the second air valve are respectively arranged on the first air duct and the second air duct, so as to adjust the ventilation ratio of the first air duct and the second air duct by adjusting the opening of the first air valve and the second air valve.

6. The oven temperature control structure according to claim 1, characterized in that: Also included is a sensing component for sensing circulating air parameters of the drying chamber; The regulating component is communicatively connected to the sensing component so as to be able to adjust the ventilation ratio of the first air duct and the second air duct according to the circulating air parameter.

7. The oven temperature control structure according to claim 6, characterized in that: The sensing component includes at least one of a temperature sensor, a wind speed sensor, and a solvent concentration sensor.

8. The oven temperature control structure according to claim 7, characterized in that: The temperature sensor and the wind speed sensor are arranged at the air outlet end of the circulating air duct, and the solvent concentration sensor is arranged at the air inlet end of the circulating air duct.

9. The oven temperature control structure according to claim 1, characterized in that: It comprises a heating chamber, wherein the first air duct, the second air duct, the heat exchanger and the regulating component are arranged in the heating chamber.

10. The oven temperature control structure according to claim 1, characterized in that: The drying chamber is provided with a first drying member and a second drying member connected to the air outlet end of the circulating air duct, and the first drying member and the second drying member are respectively used for drying the two coated sides.

11. A coating machine, characterized in that: The invention comprises the oven temperature control structure as described in any one of claims 1 to 10.

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