Method for controlling a coating oven, system, controller, storage medium therefor

Abstract

The application discloses a kind of coating machine oven control method and system, controller, storage medium thereof, wherein control method includes: by first temperature sensor, the first exhaust temperature in exhaust duct is obtained;By second temperature sensor, the second exhaust temperature of exhaust outlet is obtained;By third temperature sensor, the first fresh air temperature of fresh air of fresh air inlet is obtained;According to first exhaust temperature, second exhaust temperature and first fresh air temperature, calculation processing is carried out, and the second fresh air temperature after heat exchange is obtained;Second fresh air temperature and at least one temperature threshold are compared, and the heating power of heater is determined according to the comparison result;According to heating power, heater is controlled to work.The application can be adjusted by setting heat exchange core and the heating power of heater according to the temperature of fresh air after heat exchange, which is conducive to reducing the energy consumption of heater, prolonging the service life of heater under the condition of ensuring the normal operation of drying oven.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coating machine oven, and particularly to a control method and system of a coating machine oven, a controller and a storage medium. BACKGROUND

[0002] The coating machine is mainly used for the surface coating process production of films, papers and the like, and the machine is used to coat a certain functional glue, paint or ink on the substrate in a roll form. In the process of manufacturing lithium batteries, after the coating process on the substrate, the slurry (commonly known as foil tape) coated on the substrate needs to be dried, and this process step is usually realized by the oven part of the coating machine.

[0003] In the related art, the heater needs to work continuously, and the new air is continuously heated to blow into the oven to dry the materials. As a result, the energy consumption of the heater is high, and the service life is short. SUMMARY

[0004] The following is a summary of the subject matter described in detail herein.

[0005] The present application provides a control method and system of a coating machine oven, a controller and a storage medium, which can adjust the heating power of the heater according to the temperature of the new air after heat exchange by setting a heat exchange core, so as to reduce the energy consumption of the heater and prolong the service life of the heater while ensuring the normal operation of the drying oven.

[0006] In a first aspect, the present application provides a control method of a coating machine oven, the coating machine oven comprising: an oven body and a hot air device, wherein the oven body comprises an upper body, a drying oven and a lower body, the upper body is provided with an air outlet, and the lower body is provided with an air inlet; the hot air device comprises a new air pipeline, an exhaust pipeline, a heat exchange core arranged at the intersection of the new air pipeline and the exhaust pipeline, the new air pipeline is sequentially provided with a new air inlet, the heat exchange core, a heater, a new air channel and a new air fan connected with the air inlet of the lower body along the direction of new air inlet; the exhaust pipeline is sequentially provided with an exhaust fan connected with the air outlet, the heat exchange core and an exhaust outlet along the direction of exhaust; a first temperature sensor arranged in the exhaust pipeline, a second temperature sensor arranged at the exhaust outlet and a third temperature sensor arranged at the new air inlet.

[0007] The control method of the coating machine oven comprises:

[0008] acquiring a first exhaust temperature in the exhaust pipeline through the first temperature sensor;

[0009] acquiring a second exhaust temperature of the exhaust outlet through the second temperature sensor;

[0010] obtaining, by the third temperature sensor, a first fresh air temperature of fresh air of the fresh air inlet;

[0011] performing calculation processing according to the first exhaust air temperature, the second exhaust air temperature and the first fresh air temperature to obtain a second fresh air temperature after heat exchange;

[0012] performing comparison processing on the second fresh air temperature and at least one temperature threshold, and determining a heating power of the heater according to a comparison result;

[0013] controlling the heater to work according to the heating power.

[0014] According to some embodiments of the present application, the calculation processing according to the first exhaust air temperature, the second exhaust air temperature and the first fresh air temperature to obtain the second fresh air temperature after heat exchange comprises:

[0015] performing difference calculation according to the first exhaust air temperature and the second exhaust air temperature to obtain a fresh air heat exchange degree;

[0016] performing calculation processing according to the first fresh air temperature and the fresh air heat exchange degree to obtain the second fresh air temperature after heat exchange.

[0017] According to some embodiments of the present application, the temperature threshold comprises a first temperature threshold and a second temperature threshold, wherein the second temperature threshold is a target heating temperature, and the second temperature threshold is greater than the first temperature threshold; and the determination of the heating power of the heater according to the comparison result comprises:

[0018] determining a power adjustment parameter according to the comparison result;

[0019] obtaining a rated power of the heater;

[0020] performing calculation processing according to the rated power and the power adjustment parameter to obtain the heating power.

[0021] According to some embodiments of the present application, the determination of the power adjustment parameter according to the comparison result comprises:

[0022] in a case where the second fresh air temperature is greater than the first temperature threshold and less than the second temperature threshold, performing calculation processing according to the second fresh air temperature and the second temperature threshold to obtain a temperature difference;

[0023] determining a power adjustment parameter according to the temperature difference and a preset function relationship.

[0024] According to some embodiments of the present application, the determination of the power adjustment parameter according to the temperature difference and the preset function relationship comprises:

[0025] determining a temperature difference threshold according to the second temperature threshold and the first temperature threshold;

[0026] establishing the preset function relationship according to the temperature difference threshold, a preset first parameter value and a preset second parameter value; wherein the second parameter value is greater than the first parameter value; the preset function relationship represents a positive correlation between the power adjustment parameter and the temperature difference value.

[0027] According to some embodiments of the present application, the determining the power adjustment parameter according to the comparison result comprises:

[0028] in the case that the second fresh air temperature is less than or equal to the first temperature threshold, determining the power adjustment parameter as the second parameter value.

[0029] According to some embodiments of the present application, the determining the power adjustment parameter according to the comparison result comprises:

[0030] in the case that the second fresh air temperature is greater than or equal to the second temperature threshold, determining the power adjustment parameter as the first parameter value.

[0031] In a second aspect, embodiments of the present application provide a control system of a coating machine oven, the coating machine oven comprising: an oven body and a hot air device, wherein the oven body comprises an upper oven body, a drying oven and a lower oven body, the upper oven body is provided with an air outlet, and the lower oven body is provided with an air inlet; the hot air device comprises a fresh air pipeline, an exhaust air pipeline, a heat exchange core arranged at the intersection of the fresh air pipeline and the exhaust air pipeline, the fresh air pipeline is sequentially provided with a fresh air inlet, the heat exchange core, a heater, a fresh air channel and a fresh air fan connected with the air inlet of the lower oven body along a fresh air inlet direction; the exhaust air pipeline is sequentially provided with an exhaust air fan connected with the air outlet, the heat exchange core and an exhaust air outlet along an exhaust air direction; a first temperature sensor arranged in the exhaust air pipeline, a second temperature sensor arranged at the exhaust air outlet and a third temperature sensor arranged at the fresh air inlet.

[0032] The control system comprises:

[0033] a first temperature acquisition module configured to acquire a first exhaust air temperature in the exhaust air pipeline through the first temperature sensor;

[0034] a second temperature acquisition module configured to acquire a second exhaust air temperature of the exhaust air outlet through the second temperature sensor;

[0035] a third temperature acquisition module configured to acquire a first fresh air temperature of fresh air of the fresh air inlet through the third temperature sensor;

[0036] A computing processing module is configured to perform computing processing according to the first exhaust air temperature, the second exhaust air temperature and the first fresh air temperature, so as to obtain a second fresh air temperature after heat exchange.

[0037] A heating power determination module is configured to perform comparison processing on the second fresh air temperature and at least one temperature threshold, and determine the heating power of the heater according to a comparison result.

[0038] A heating control module is configured to control the heater to work according to the heating power.

[0039] In a third aspect, an embodiment of the present application provides a controller, which comprises a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor implements the control method of the coating machine oven according to any one of the embodiments of the first aspect when executing the computer program.

[0040] In a fourth aspect, an embodiment of the present application provides a computer readable storage medium, which stores computer executable instructions, and the computer executable instructions are used to implement the control method of the coating machine oven according to any one of the embodiments of the first aspect when executed by a computer.

[0041] The embodiment of the present application comprises: during the drying work of the coating oven, fresh air enters the heat exchange core from the fresh air inlet, and the exhaust air that has been heated in the drying box flows into the heat exchange core under the action of the exhaust air fan; the exhaust air has heat, and the temperature of the fresh air is increased after the heat exchange between the exhaust air and the fresh air in the heat exchange core; the heat-exchanged exhaust air flows out from the exhaust air outlet, and the heat-exchanged fresh air enters the next box and the drying box in turn through the heater, the fresh air channel and the air inlet under the action of the fresh air fan, so as to heat the materials in the drying box; the residual heat in the exhaust air is recycled twice by the heat exchange core, which is beneficial to reducing the energy consumption of the heater. When the coating oven provided with the heat exchange core is used for drying work, first, the control system of the coating oven obtains the first exhaust air temperature in the exhaust air pipeline by the first temperature sensor through the first temperature acquisition module, obtains the second exhaust air temperature of the exhaust air outlet by the second temperature sensor through the second temperature acquisition module, and obtains the first fresh air temperature of the fresh air inlet by the third temperature sensor through the third temperature acquisition module; then, the second fresh air temperature after heat exchange is obtained by the calculation and processing module according to the first exhaust air temperature, the second exhaust air temperature and the first fresh air temperature; it is beneficial to know the temperature change of the fresh air after the first heat exchange and the second fresh air temperature after the heat exchange, and provides a reliable data reference basis for subsequent adjustment of the heating power of the heater; then, the second fresh air temperature and at least one temperature threshold are compared by the heating power determination module, and the heating power of the heater is determined according to the comparison result; the heating power of the heater can be flexibly adjusted according to the comparison result; finally, the heater is controlled to work according to the heating power by the heating control module; thereby reducing the energy consumption of the heater and prolonging the service life of the heater. That is to say, the scheme of the embodiment of the present application can adjust the heating power of the heater according to the temperature of the fresh air after heat exchange by setting the heat exchange core, which is beneficial to reducing the energy consumption of the heater and prolonging the service life of the heater while ensuring the normal drying work in the drying box.

[0042] Additional features and advantages of the present application will be set forth in the description that follows, and in part will be apparent from the description, or can be learned by practice of the present application. The objectives and other advantages of the present application will be realized and attained by the structure particularly pointed out in the description and the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0043] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0044] Figure 1 is the overall structure schematic diagram of the coating oven provided by an embodiment of the present application;

[0045] Figure 2is a front view of a coating machine oven provided by an embodiment of the present application;

[0046] Figure 3 is a flow chart of a control method of a coating machine oven provided by an embodiment of the present application;

[0047] Figure 4 is a flow chart of determining a heating power of a heater according to a comparison result provided by an embodiment of the present application;

[0048] Figure 5 is a preset function relationship diagram provided by an embodiment of the present application;

[0049] Figure 6 is a whole flow chart of step S210 provided by an embodiment of the present application;

[0050] Figure 7 is a functional module diagram of a control system of a coating machine oven provided by an embodiment of the present application;

[0051] Figure 8 is a hardware structure diagram of a controller provided by an embodiment of the present application. DETAILED DESCRIPTION

[0052] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0053] It should be noted that although a logical sequence is shown in the flow chart in the description of the present application, the steps shown or described can be executed in an order different from that in the flow chart in some cases. In the description of the present application, the meaning of "one or more" is one or more, and the meaning of "multiple" is two or more. The description of "first", "second" is only for distinguishing technical features for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used herein are only for the purpose of describing the embodiments of the present application, and are not intended to limit the present application.

[0055] The application provides a coating machine oven control method, a coating machine oven control system, a controller and a computer readable storage medium.

[0056] The application is further described below with reference to the drawings.

[0057] Referring to Figure 1 and Figure 2 , the coating machine oven 100 comprises an oven body 200 and a hot air device 300, wherein the oven body 200 comprises an upper body 210, a drying box 220 and a lower body 230, the upper body 210 is provided with an air outlet 211, and the lower body 230 is provided with an air inlet 231; the hot air device 300 comprises a fresh air duct 310, an exhaust air duct 320, a heat exchange core 330 arranged at the intersection of the fresh air duct 310 and the exhaust air duct 320, the fresh air duct 310 is sequentially provided with a fresh air inlet 311, the heat exchange core 330, a heater 312, a fresh air fan 314 connected with the air inlet 231 of the lower body 230 along the fresh air inlet direction; the exhaust air duct 320 is sequentially provided with an exhaust air fan 321 connected with the air outlet 211, the heat exchange core 330 and an exhaust air outlet 322 along the exhaust air direction; a first temperature sensor 410 arranged in the exhaust air duct 320, a second temperature sensor 420 arranged at the exhaust air outlet 322 and a third temperature sensor 430 arranged at the fresh air inlet 311.

[0058] It should be noted that the heat exchange core 330 includes a first heat exchange channel and a second heat exchange channel which are independent of each other, the first heat exchange channel is communicated with the fresh air inlet and the fresh air pipeline, and the second heat exchange pipeline is communicated with the exhaust air pipeline 320 and the exhaust air outlet 322; so that the fresh air and the exhaust air are isolated and heat exchanged in the heat exchange core 330, thereby avoiding that the moisture in the exhaust air enters the fresh air, so as to ensure that the fresh air has good drying effect.

[0059] The fresh air fan 314 is used to provide power to suck the fresh air from the fresh air inlet 311 into the heat exchange core 330, and to provide power for the heat exchanged fresh air, so that the fresh air flows through the heater 312, the pipeline and the fresh air fan 314 in turn, and enters the lower box body 230.

[0060] In the oven box body 200, the box body 210, the drying box 220 and the lower box body 230 are arranged in the vertical direction in sequence and communicated with each other. The upper box body 210 and the upper end of the drying box 220 are communicated through the flow guide assembly; the lower end of the drying box 220 and the lower box body 230 are communicated through the flow guide assembly; and the drying box 220 is arranged with the material to be heated and dried. The fresh air with increased temperature blows to the drying box 220 through the flow guide assembly in the lower box body 230, so as to dry the material; and the fresh air after drying the material continues to blow to the upper box body 210 through the flow guide assembly.

[0061] The exhaust air fan 321 is used to provide power to suck the exhaust air from the upper box body 210 through the exhaust port 211, and to guide the exhaust air into the heat exchange core 330 to be heat exchanged with the fresh air.

[0062] The first temperature sensor 410 is used to collect the first exhaust air temperature in the exhaust air pipeline 320; the second temperature sensor 420 is used to collect the second exhaust air temperature of the exhaust air outlet 322; and the third temperature sensor 430 is used to collect the first fresh air temperature of the fresh air inlet 311; so as to provide data reference for adjusting the heating power of the heater 312.

[0063] According to the oven 100 of the coating machine provided by the embodiment of the present application, in the process of drying work, the fresh air enters the heat exchange core 330 from the fresh air inlet 311, and the exhaust air after heating the material in the drying box 220 enters the heat exchange core 330 under the action of the exhaust air fan 321; the exhaust air has heat, and the fresh air temperature is increased after the heat exchange between the exhaust air and the fresh air in the heat exchange core 330; the heat exchanged exhaust air flows out from the exhaust air outlet 322, and the heat exchanged fresh air enters the lower box body 230 and the drying box 220 through the heater 312, the fresh air pipeline and the air inlet in turn under the action of the fresh air fan 314, so as to heat the material in the drying box 220; the residual heat in the exhaust air is recycled twice by the heat exchange core 330, which is beneficial to reducing the energy consumption of the heater.

[0064] The coating machine oven provided by the embodiment is used for further explaining the control method of the coating machine oven provided by the embodiment.

[0065] In a first aspect, referring to Figure 3 The control method of the coating machine oven can include, but is not limited to, steps S110 to S160.

[0066] Step S110: obtaining a first exhaust air temperature in the exhaust air pipeline by the first temperature sensor.

[0067] In this step, the first temperature sensor is used to collect the temperature of the exhaust air before heat exchange in the exhaust air pipeline, which is beneficial to subsequent calculation of the fresh air heat exchange degree.

[0068] Step S120: obtaining a second exhaust air temperature at the exhaust air outlet by the second temperature sensor.

[0069] In this step, the second temperature sensor is used to collect the temperature of the exhaust air after heat exchange at the exhaust air outlet, which is beneficial to subsequent calculation of the fresh air heat exchange degree.

[0070] Step S130: obtaining a first fresh air temperature of fresh air at the fresh air inlet by the third temperature sensor.

[0071] In this step, the third temperature sensor is used to collect the temperature of the fresh air before heat exchange at the fresh air inlet, which is beneficial to subsequent calculation of the temperature of the fresh air after heat exchange.

[0072] Step S140: performing calculation processing according to the first exhaust air temperature, the second exhaust air temperature and the first fresh air temperature to obtain a second fresh air temperature after heat exchange.

[0073] In this step, the temperature sensor arranged in the heat exchange core will affect the heat exchange effect, and it is difficult to detect the fresh air temperature after heat exchange by arranging the temperature detection device in the heat exchange core. Therefore, after collecting the first exhaust air temperature in the exhaust air pipeline, the second exhaust air temperature at the exhaust air outlet and the first fresh air temperature of the fresh air at the fresh air inlet, the fresh air heat exchange degree can be obtained by simple calculation. The installation cost is low and easy to implement. In addition, the temperature change of the fresh air after one-time heat exchange and the fresh air temperature after heat exchange can be obtained by simple calculation, which provides a reliable data reference basis for subsequent adjustment of the heating power of the heater.

[0074] According to some embodiments of the present application, step S140 includes, but is not limited to, the following steps: performing difference calculation according to the first exhaust air temperature and the second exhaust air temperature to obtain a fresh air heat exchange degree; and performing calculation processing according to the first fresh air temperature and the fresh air heat exchange degree to obtain a second fresh air temperature after heat exchange.

[0075] Specifically, the first exhaust air temperature is subtracted from the second exhaust air temperature to obtain a fresh air heat exchange degree; then, the first fresh air temperature and the fresh air heat exchange degree are added to obtain the second fresh air temperature, which provides a reliable data reference basis for subsequent adjustment of the heating power of the heater.

[0076] Step S150: comparing the second fresh air temperature with at least one temperature threshold value, and determining the heating power of the heater according to the comparison result.

[0077] In this step, the temperature threshold value includes a first temperature threshold value and a second temperature threshold value, wherein the second temperature threshold value is a target heating temperature, and the second temperature threshold value is greater than the first temperature threshold value. By setting the temperature interval through step S150, it is determined whether the fresh air with the second fresh air temperature meets the drying demand in the coating machine oven, and then the heating power of the heater is adjusted.

[0078] Step S160: controlling the heater to work according to the heating power.

[0079] In this step, the heater is controlled to work according to the adjusted heating power, which is beneficial to reduce the energy consumption of the heater and prolong the service life of the heater while ensuring the normal operation of the drying oven.

[0080] In the process that the coating machine oven performs the drying work, the fresh air enters the heat exchange core from the fresh air inlet, and the exhaust air that has been heated in the drying box flows into the heat exchange core under the action of the exhaust air fan; the exhaust air has heat, and the fresh air temperature is increased after the heat exchange between the fresh air and the exhaust air in the heat exchange core; the heat-exchanged exhaust air flows out from the exhaust air outlet, and the heat-exchanged fresh air enters the next box and the drying box under the action of the fresh air fan in sequence through the heater, the fresh air channel and the air inlet, so as to heat the materials in the drying box; the residual heat in the exhaust air is recycled twice by the heat exchange core, which is beneficial to reduce the energy consumption of the heater. When the coating machine oven provided with the heat exchange core performs the drying work, first, the control system of the coating machine oven obtains the first exhaust air temperature in the exhaust air pipeline through the first temperature sensor, the second exhaust air temperature at the exhaust air outlet through the second temperature sensor and the first fresh air temperature of the fresh air at the fresh air inlet through the third temperature sensor; then, the second fresh air temperature after the heat exchange is obtained by calculating and processing the first exhaust air temperature, the second exhaust air temperature and the first fresh air temperature; it is beneficial to know the temperature change of the fresh air after the first heat exchange and the second fresh air temperature after the heat exchange, and provides a reliable data reference basis for subsequent adjustment of the heating power of the heater; then, the second fresh air temperature is compared with at least one temperature threshold, and the heating power of the heater is determined according to the comparison result; the heating power of the heater can be flexibly adjusted according to the comparison result; finally, the heater is controlled to work according to the heating power; thereby the energy consumption of the heater is reduced, and the service life of the heater is prolonged. That is to say, the scheme of the embodiment of the present application can adjust the heating power of the heater by setting the heat exchange core and adjusting the heating power of the heater according to the fresh air temperature after the heat exchange, which is beneficial to reduce the energy consumption of the heater and prolong the service life of the heater while ensuring the normal drying work in the drying box.

[0081] According to some embodiments of the present application, with reference to Figure 4 , the step of determining the heating power of the heater according to the comparison result in step S150 includes but is not limited to steps S210 to S230.

[0082] Step S210: determining a power adjustment parameter according to the comparison result.

[0083] Step S220: obtaining the rated power of the heater.

[0084] Step S230: obtaining the heating power by calculating and processing the rated power and the power adjustment parameter.

[0085] Through steps S210 to S230, after the power adjustment parameter is determined according to the comparison result, the rated power of the heater is multiplied by the power adjustment parameter to obtain the heating power, which realizes the adjustment of the heating power and is beneficial to reduce the energy consumption of the heater.

[0086] According to some embodiments of the present application, step S220 is further explained as follows. Specifically, the at least one temperature threshold includes a first temperature threshold and a second temperature threshold, and the comparison result between the second fresh air temperature, the first temperature threshold and the second temperature threshold includes three kinds. One is that the second fresh air temperature is greater than the first temperature threshold and less than the second temperature threshold; the second is that the second fresh air temperature is less than or equal to the first temperature threshold; and the third is that the second fresh air temperature is greater than or equal to the second temperature threshold. Corresponding to the three comparison results, there are three ways to determine the power adjustment parameter.

[0087] One is that according to some embodiments of the present application, when the second fresh air temperature is greater than the first temperature threshold and less than the second temperature threshold, the temperature difference is obtained by calculating and processing according to the second fresh air temperature and the second temperature threshold; and the power adjustment parameter is determined according to the temperature difference and the preset function relationship.

[0088] Specifically, after the second temperature threshold minus the second fresh air temperature obtains the temperature difference, the power adjustment parameter is determined according to the preset function relationship.

[0089] According to some embodiments of the present application, before the power adjustment parameter is determined according to the temperature difference and the preset function relationship, the following steps are included:

[0090] A temperature difference threshold is determined according to the second temperature threshold and the first temperature threshold; a preset function relationship is established according to the temperature difference threshold, a preset first parameter value and a preset second parameter value; wherein the second parameter value is greater than the first parameter value; and the preset function relationship represents a positive correlation between the power adjustment parameter and the temperature difference.

[0091] Specifically, specifically, the first parameter value is 0.1, and the second parameter value is 1. The temperature difference threshold is obtained by subtracting the first temperature threshold from the second temperature threshold, and the preset function relationship can be established according to the temperature difference threshold, the first parameter value and the second parameter value.

[0092] For example, in combination with Figure 5 , Figure 5 is a preset function relationship diagram provided by an embodiment of the present application. The second temperature threshold is 50, the first temperature threshold is 14, and the temperature difference threshold is 36 obtained by subtracting the first temperature threshold from the second temperature threshold. When the temperature difference T1 is 36, the second parameter value f2 is 1 correspondingly; when the temperature difference T2 is 0, the first parameter value f1 is 0.1 correspondingly. Based on the two coordinate points (36, 1) and (0, 0.1), a power adjustment parameter f(T) can be determined, which is expressed in a function form as follows: f(T) = 0.025T + 0.1

[0093] f(T) = (0.9 / 40)T + 0.1 = 0.025T + 0.1.

[0094] It can be understood that the preset function relationship, i.e., the power adjustment parameter function, can be determined in the same manner according to other specific temperature difference threshold, first parameter value and second parameter value.

[0095] Secondly, according to some embodiments of the present application, the power adjustment parameter is determined as the second parameter value in a case that the second fresh air temperature is less than or equal to the first temperature threshold.

[0096] Specifically, the second parameter value is 1. It can be understood that, in a case that the second fresh air temperature is less than or equal to the first temperature threshold, it indicates that the heat energy recovered from the exhaust air is less, and the fresh air with the second fresh air temperature cannot meet the drying demand in the drying cabinet after one heat exchange, thus the heater needs to perform secondary heating on the fresh air with the second fresh air temperature. Since the difference between the second fresh air temperature and the second temperature threshold (i.e., the target heating temperature) is large, the heater needs to have a large heating power to increase the second fresh air temperature to the second temperature threshold in a short time; but in order to reduce the loss of the heater and prolong its service life, the power adjustment parameter is determined as the second parameter value 1. That is, in a case that the second fresh air temperature is less than or equal to the first temperature threshold, the power adjustment parameter is determined as the second parameter value 1, and since the heating power = rated power * power adjustment parameter, the rated power is determined as the heating power.

[0097] Thirdly, according to some embodiments of the present application, the power adjustment parameter is determined as the first parameter value in a case that the second fresh air temperature is greater than or equal to the second temperature threshold.

[0098] Specifically, the first parameter value is 0.1. It can be understood that, in a case that the second fresh air temperature is greater than or equal to the second temperature threshold, it indicates that the heat energy recovered from the exhaust air is more, and the fresh air with the second fresh air temperature can meet the drying demand in the drying cabinet after one heat exchange, thus in order to reduce the loss of the heater, the heater does not need to perform secondary heating on the fresh air with the second fresh air temperature; but in order to reduce the loss and time consumption caused by repeatedly starting and stopping the heater, the heater needs to work at a smaller heating adjustment power. That is, in a case that the second fresh air temperature is greater than or equal to the second temperature threshold, the power adjustment parameter is determined as the first parameter value 0.1, the smaller heating adjustment power is obtained by multiplying the first parameter value with the rated power, and the heating adjustment power is determined as the heating power.

[0099] In combination with Figure 6 , Figure 6 is the overall flowchart of step S210 provided by an embodiment of the present application.

[0100] Step S310: obtaining the second fresh air temperature, the first temperature threshold and the second temperature threshold.

[0101] Step S320: determining whether the second fresh air temperature is greater than or equal to the second temperature threshold; if yes, executing step S330; if no, executing step S340.

[0102] Step S330: determining that the power adjustment parameter is the first parameter value.

[0103] Step S340: determining whether the second fresh air temperature is less than or equal to the first temperature threshold; if yes, executing step S350; if no, executing step S360.

[0104] Step S350: determining that the power adjustment parameter is the second parameter value.

[0105] Step S360: performing calculation processing according to the second fresh air temperature and the second temperature threshold to obtain a temperature difference value.

[0106] Step S370: determining the power adjustment parameter according to the temperature difference value and a preset function relationship; wherein the second parameter value is greater than the first parameter value.

[0107] Through steps S310 to S370, the power adjustment parameter is determined, so that the heater heating power is determined, which is beneficial to reducing the energy consumption of the heater and prolonging the service life of the heater under the condition of ensuring that the drying work in the drying oven is normally performed.

[0108] In a second aspect, referring to Figure 7 The control system 700 of the coating oven comprises a first temperature acquisition module 710, a second temperature acquisition module 720, a third temperature acquisition module 730, a calculation processing module 740, a heating power determination module 750 and a heating control module 760. Wherein:

[0109] The first temperature acquisition module 710 is configured to acquire the first exhaust air temperature in the exhaust air duct through the first temperature sensor.

[0110] The second temperature acquisition module 720 is configured to acquire the second exhaust air temperature of the exhaust air outlet through the second temperature sensor.

[0111] The third temperature acquisition module 730 is configured to acquire the first fresh air temperature of the fresh air at the fresh air inlet through the third temperature sensor.

[0112] The calculation processing module 740 is configured to perform calculation processing according to the first exhaust air temperature, the second exhaust air temperature and the first fresh air temperature to obtain the second fresh air temperature after heat exchange.

[0113] The heating power determination module 750 is configured to compare the second fresh air temperature with at least one temperature threshold, and determine the heating power of the heater according to the comparison result.

[0114] The heating control module 760 is configured to control the heater to work according to the heating power.

[0115] The control system 700 of the coating machine oven provided by the embodiment of the present application can obtain the first exhaust air temperature in the exhaust air duct through the first temperature acquisition module 710 and the first temperature sensor, obtain the second exhaust air temperature at the exhaust air outlet through the second temperature acquisition module 720 and the second temperature sensor, and obtain the first fresh air temperature of the fresh air at the fresh air inlet through the third temperature acquisition module 730 and the third temperature sensor. Then, the second fresh air temperature after heat exchange is obtained through the calculation processing module 740 according to the first exhaust air temperature, the second exhaust air temperature and the first fresh air temperature. The temperature change of the fresh air after the first heat exchange and the second fresh air temperature after the heat exchange are obtained, which provides a reliable data reference basis for subsequent adjustment of the heating power of the heater. Then, the second fresh air temperature is compared with at least one temperature threshold through the heating power determination module 750, and the heating power of the heater is determined according to the comparison result. The heating power of the heater can be flexibly adjusted according to the comparison result. Finally, the heater is controlled to work according to the heating power through the heating control module 760. Therefore, the control system 700 of the coating machine oven can adjust the heating power of the heater, reduce the energy consumption of the heater and prolong the service life of the heater under the condition that the drying work in the drying oven is normally performed.

[0116] It should be noted that the control system of the coating machine oven can realize the control method of the coating machine oven of any of the foregoing embodiments, and therefore, the control system of the coating machine oven of the present embodiment has the same technical principles and effects as the control method of the coating machine oven of any of the foregoing embodiments. To avoid redundant content, no further description is given here.

[0117] In a third aspect, referring to Figure 8 The controller 800 includes a memory 820, a processor 810 and a computer program stored in the memory 820 and executable on the processor. When the processor 810 executes the computer program, the control method of the coating machine oven of the first aspect is realized.

[0118] The processor 810 and the memory 820 can be connected through a bus or other means.

[0119] The processor 810 can be implemented by a general-purpose central processing unit, a microprocessor, an application-specific integrated circuit, or one or more integrated circuits, and is configured to execute related programs to implement the technical solutions provided by the embodiments of the present application.

[0120] The memory 820 is a non-transitory computer readable storage medium, and is configured to store non-transitory software programs and non-transitory computer executable programs. In addition, the memory can include a high-speed random access memory, and can further include a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state memory device. In some embodiments, the memory 820 can optionally include a memory remotely arranged relative to the processor, and the remote memory can be connected to the processor through a network. Examples of the network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0121] The non-transitory software programs and instructions required to implement the control method of the coating oven of the above-mentioned embodiments are stored in the memory, and when executed by the processor, the control method of the coating oven in the above-mentioned embodiments is executed, for example, the method steps shown in Figure 3 、 Figure 4 、 Figure 6 described above are executed.

[0122] The apparatus embodiments or system embodiments described above are only schematic, and the units described as separate units can or can not be physically separated, that is, can be located in one place, or can be distributed on multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the present embodiment.

[0123] In a fourth aspect, an embodiment of the present application further provides a computer readable storage medium, which stores computer executable instructions, and the computer executable instructions are executed by a processor or a controller, for example, a processor in the above-mentioned apparatus embodiment, so that the above-mentioned processor executes the control method of the coating oven in the above-mentioned embodiments, for example, executes the method steps shown in Figure 3 、 Figure 4 、 Figure 6 described above.

[0124] It will be understood by those skilled in the art that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0125] The above is a detailed description of the preferred embodiments of the present invention. However, the present invention is not limited to the above embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the present invention.

Claims

1. A control method of a coater oven, characterized by, The coating machine oven comprises an oven body and a hot air device, wherein the oven body comprises an upper box, a drying box and a lower box, the upper box is provided with an air outlet, and the lower box is provided with an air inlet; the hot air device comprises a fresh air pipeline, an exhaust pipeline, a heat exchange core arranged at the intersection of the fresh air pipeline and the exhaust pipeline, a fresh air inlet, the heat exchange core, a heater, a fresh air channel and a fresh air fan connected with the air inlet of the lower box are arranged in sequence on the fresh air pipeline along the fresh air inlet direction; the exhaust pipeline is sequentially provided with an exhaust fan connected with the air outlet, the heat exchange core and an exhaust outlet along the exhaust direction; a first temperature sensor arranged in the exhaust pipeline, a second temperature sensor arranged at the exhaust outlet and a third temperature sensor arranged at the fresh air inlet; The control method of the coating machine oven comprises: obtaining a first exhaust temperature in the exhaust pipeline through the first temperature sensor; obtaining a second exhaust temperature of the exhaust outlet through the second temperature sensor; obtaining a first fresh air temperature of the fresh air inlet through the third temperature sensor; performing calculation processing according to the first exhaust temperature, the second exhaust temperature and the first fresh air temperature to obtain a second fresh air temperature after heat exchange; comparing the second fresh air temperature with at least one temperature threshold value, and determining the heating power of the heater according to the comparison result; controlling the heater to work according to the heating power; wherein the temperature threshold value comprises a first temperature threshold value and a second temperature threshold value, wherein the second temperature threshold value is a target heating temperature, and the second temperature threshold value is greater than the first temperature threshold value; the determination of the heating power of the heater according to the comparison result comprises: determining a power adjustment parameter according to the comparison result; obtaining the rated power of the heater; performing calculation processing according to the rated power and the power adjustment parameter to obtain the heating power; the determination of the power adjustment parameter according to the comparison result comprises: in the case that the second fresh air temperature is greater than the first temperature threshold value and less than the second temperature threshold value, performing calculation processing according to the second fresh air temperature and the second temperature threshold value to obtain a temperature difference value; determining a power adjustment parameter according to the temperature difference value and a preset function relationship; the preset function relationship represents a positive correlation between the power adjustment parameter and the temperature difference value.

2. The control method of a coater oven according to claim 1, characterized by, the calculation processing according to the first exhaust temperature, the second exhaust temperature and the first fresh air temperature to obtain the second fresh air temperature after heat exchange comprises: performing difference calculation according to the first exhaust temperature and the second exhaust temperature to obtain a fresh air heat exchange degree; performing calculation processing according to the first fresh air temperature and the fresh air heat exchange degree to obtain the second fresh air temperature after heat exchange.

3. The control method of a coater oven according to claim 1, characterized by, the determination of the power adjustment parameter according to the temperature difference value and the preset function relationship comprises: determining a temperature difference threshold value according to the second temperature threshold value and the first temperature threshold value; The preset function relationship is established according to the temperature difference threshold, a preset first parameter value and a preset second parameter value, wherein the second parameter value is greater than the first parameter value.

4. The control method of a coater oven according to claim 3, characterized in that, The power adjustment parameter is determined according to the comparison result, including: In the case that the second fresh air temperature is less than or equal to the first temperature threshold, the power adjustment parameter is determined as the second parameter value.

5. The control method of a coater oven according to claim 3, characterized by, The power adjustment parameter is determined according to the comparison result, including: In the case that the second fresh air temperature is greater than or equal to the second temperature threshold, the power adjustment parameter is determined as the first parameter value.

6. A control system for a coater oven, characterized by The coating machine oven comprises an oven box body and a hot air device, wherein the oven box body comprises an upper box body, a drying box and a lower box body, the upper box body is provided with an air outlet, and the lower box body is provided with an air inlet; the hot air device comprises a fresh air pipeline, an exhaust pipeline, a heat exchange core arranged at the intersection of the fresh air pipeline and the exhaust pipeline, a fresh air inlet, the heat exchange core, a heater, a fresh air channel and a fresh air fan connected with the air inlet of the lower box body are arranged on the fresh air pipeline in sequence along the fresh air inlet direction; the exhaust pipeline is sequentially provided with an exhaust fan connected with the air outlet, the heat exchange core and an exhaust outlet along the exhaust direction; a first temperature sensor arranged in the exhaust pipeline, a second temperature sensor arranged at the exhaust outlet and a third temperature sensor arranged at the fresh air inlet; The control system comprises: A first temperature acquisition module is configured to acquire a first exhaust temperature in the exhaust pipeline through the first temperature sensor; A second temperature acquisition module is configured to acquire a second exhaust temperature of the exhaust outlet through the second temperature sensor; A third temperature acquisition module is configured to acquire a first fresh air temperature of fresh air at the fresh air inlet through the third temperature sensor; A calculation processing module is configured to perform calculation processing according to the first exhaust temperature, the second exhaust temperature and the first fresh air temperature to obtain a second fresh air temperature after heat exchange; A heating power determination module is configured to compare the second fresh air temperature with at least one temperature threshold, and determine a heating power of the heater according to the comparison result; A heating control module is configured to control the heater to work according to the heating power; The temperature threshold comprises a first temperature threshold and a second temperature threshold, wherein the second temperature threshold is a target heating temperature, and the second temperature threshold is greater than the first temperature threshold; the heating power of the heater is determined according to the comparison result, including: A power adjustment parameter is determined according to the comparison result; a rated power of the heater is acquired; and the heating power is obtained by performing calculation processing according to the rated power and the power adjustment parameter. The determining the power adjustment parameter according to the comparison result comprises: in the case that the second fresh air temperature is greater than the first temperature threshold and less than the second temperature threshold, performing a calculation process according to the second fresh air temperature and the second temperature threshold to obtain a temperature difference value; and determining the power adjustment parameter according to the temperature difference value and a preset function relationship, wherein the preset function relationship represents a positive correlation between the power adjustment parameter and the temperature difference value.

7. A controller comprising: The memory, the processor and the computer program stored in the memory and executable on the processor, wherein the processor implements the control method of the coating machine oven according to any one of claims 1 to 5 when executing the computer program.

8. A computer-readable storage medium, characterized in that, The computer executable instructions are stored, and the computer executable instructions are used to implement the control method of the coating machine oven according to any one of claims 1 to 5 when executed by a computer.

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