A control device, method, equipment and medium for a corona ozone extraction blower

Abstract

The present application relates to the technical field of ozone blowers, and in particular to a control device, method, equipment and medium for a corona ozone extraction blower. The corona ozone extraction blower includes an exhaust component and a corona component. The device includes: a frequency converter, a first PLC module and a second PLC module. The first PLC module, the second PLC module and the corona ozone extraction blower are respectively connected to the frequency converter; wherein the first PLC module is used to detect a fault alarm signal output by the frequency converter; the frequency converter is used to control the exhaust component to decelerate according to a preset deceleration time to reduce the operating frequency when the first PLC module detects the fault alarm signal; the second PLC module is used to stop receiving the operating feedback signal when the operating frequency of the exhaust component is lower than the preset frequency value, so as to stop the discharge of the electrodes of the corona component, so as to ensure that the exhaust component extracts all the ozone generated by the corona component, aiming to avoid the problem of ozone damaging the motor and shortening the service life of the blower.

Description

Technical Field

[0001] The present application relates to the technical field of ozone blowers, and in particular to a control device, method, equipment and medium for a corona ozone extraction blower. Background Art

[0002] In modern industrial production, film production line products are often subjected to corona treatment, which produces waste gas containing ozone. Therefore, specialized ozone treatment equipment is usually equipped to filter and purify this waste gas.

[0003] When a production line produces single-corona products, one of the fans may stop operating according to process requirements. At this time, due to the strong oxidizing properties of ozone, components such as the impeller and motor coils in the stopped fan are exposed to an ozone-containing environment. After a long period of accumulation, ozone will corrode the fan's motor coils and bearings, causing motor damage, increasing equipment maintenance costs and downtime. To avoid this damage, the current solution is to run both the upper and lower fans simultaneously, regardless of the product being produced, to ensure that the exhaust gas can continuously pass through the ozone treatment device. However, while this practice can prevent ozone backflow, long-term operation not only increases energy consumption, but also accelerates wear of the fan, shortening its service life, increasing production costs and the complexity of equipment maintenance.

[0004] In addition, when the fan fails, the ozone generated cannot be removed in time, further exacerbating the corrosion risk of the equipment and the deterioration of the production environment. Summary of the Invention

[0005] The main purpose of the embodiments of the present application is to propose a control device, method, equipment and medium for a corona ozone extraction blower, which aims to treat ozone in a timely manner to avoid ozone damaging the motor and shortening the service life of the blower.

[0006] To achieve the above-mentioned object, a first aspect of an embodiment of the present application provides a control device for a corona ozone extraction blower, wherein the corona ozone extraction blower includes an exhaust component and a corona component, and the device includes:

[0007] A frequency converter, a first PLC module and a second PLC module, wherein the first PLC module, the second PLC module and the corona ozone extraction blower are respectively connected to the frequency converter;

[0008] Wherein, the first PLC module is used to detect the fault alarm signal output by the frequency converter;

[0009] The frequency converter is used to control the exhaust component to decelerate according to a preset deceleration time to reduce the operating frequency when the first PLC module detects the fault alarm signal;

[0010] The second PLC module is used to stop receiving the operation feedback signal when the operating frequency of the exhaust component is lower than the preset frequency value, so as to stop the discharge of the electrodes of the corona component to ensure that the exhaust component can completely remove the ozone generated by the corona component.

[0011] Through the device provided in the first aspect, ozone can be treated in a timely manner when a motor fails, thereby protecting the motor from ozone erosion, ensuring the stable operation of the fan, and extending the service life of the fan, reducing the failure rate, maintenance cost and replacement frequency of the equipment, improving the efficiency of troubleshooting, and thus improving the reliability of the entire system.

[0012] In one possible implementation, the device also includes a third PLC module, which is connected to the frequency converter, wherein the third PLC module includes a first intermediate relay, which is used to output a start signal when the normally open contact of the first intermediate relay is closed, and send the start signal to the frequency converter, so that the frequency converter controls the start of the corona ozone extraction blower.

[0013] In one possible implementation, the device further includes a backflow prevention valve, which is connected to the frequency converter and the corona ozone extraction blower, wherein the backflow prevention valve further includes a second intermediate relay, which is used to close the valve of the backflow prevention valve of the corona ozone extraction blower in a shutdown state, so as to control the ozone generated by the corona ozone extraction blower in a running state to prevent it from entering the corona ozone extraction blower in a shutdown state.

[0014] In one possible implementation, the anti-backflow valve includes a valve position detection module, and the position detection module includes a position sensor. The position sensor is used to detect whether the valve position of the anti-backflow valve is in a fully open position or a fully closed position to ensure that the anti-backflow valve is in a fully open state or a fully closed state.

[0015] In one possible implementation, the position detection module further includes a fault alarm light for issuing an alarm when the position sensor detects that the valve position of the backflow prevention valve is neither in the fully open position nor in the fully closed position.

[0016] In a possible implementation, the device further includes an interactive module developed based on WINCC, which is connected to the frequency converter and configured to generate an alarm after the first PLC module receives a fault alarm signal output by the frequency converter.

[0017] To achieve the above-mentioned purpose, a second aspect of the embodiments of the present application provides a method for controlling a corona ozone extraction blower, the method comprising:

[0018] When the first PLC module receives the fault alarm signal output by the frequency converter, it detects that the corona ozone extraction blower has failed, and at the same time, the exhaust component decelerates according to the preset deceleration time of the frequency converter to reduce the operating frequency;

[0019] When the operating frequency of the exhaust component is lower than the preset frequency value, the second PLC module stops receiving the operation feedback signal, so that the electrodes of the corona component stop discharging, to ensure that the exhaust component extracts all the ozone generated by the corona component.

[0020] Through the method provided in the second aspect, ozone can be treated in a timely manner when a motor fails, thereby protecting the motor from ozone erosion, ensuring the stable operation of the fan, extending the service life of the fan, reducing the failure rate, maintenance cost and replacement frequency of the equipment, and improving the efficiency of troubleshooting, thereby improving the reliability of the entire system.

[0021] In one possible implementation, the device further includes a backflow prevention valve provided on the corona ozone extraction blower, wherein the backflow prevention valve further includes a second intermediate relay, and the method further includes:

[0022] The second intermediate relay is used to close the anti-backflow valve of the corona ozone extraction blower in the shutdown state, so as to prevent the ozone generated by the corona ozone extraction blower in the running state from entering the corona ozone extraction blower in the shutdown state.

[0023] In a third aspect, an electronic device is provided, comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the control method of the corona ozone extraction blower as described in any possible implementation method in the second aspect is implemented.

[0024] In a fourth aspect, a computer-readable storage medium is provided, wherein the storage medium stores a computer program, and when the computer program is executed by a processor, the control method of the corona ozone extraction blower as described in any possible implementation manner in the second aspect is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0026] Figure 1This is a structural block diagram of a control device for a corona ozone extraction blower provided in an embodiment of the present application;

[0027] Figure 2 This is a structural diagram of the anti-backflow valve provided in an embodiment of the present application;

[0028] Figure 3 This is a circuit schematic diagram of a control device for an upper corona ozone extraction blower provided in an embodiment of the present application;

[0029] Figure 4 This is a circuit schematic diagram of a control device for a lower corona ozone extraction blower provided in an embodiment of the present application;

[0030] Figure 5 This is a flow chart of a method for controlling a corona ozone extraction blower provided in an embodiment of the present application;

[0031] Figure 6 This is a structural block diagram of an electronic device according to an embodiment of the present application;

[0032] Figure numerals: upper corona inverter INV1, upper corona ozone extraction blower 100, upper corona first PLC module 200, upper corona second PLC module 300, upper corona third PLC module 400, upper corona backflow prevention valve 500, upper corona thermal protection circuit breaker QS1, upper corona first intermediate relay KA1, upper corona second intermediate relay KA2, first fault alarm light LED1, second fault alarm light LED2, lower corona inverter INV2, lower corona ozone extraction blower 600, lower corona first PLC module 700, lower corona second PLC module 800, lower corona third PLC module 900, lower corona backflow prevention valve 1000, lower corona thermal protection circuit breaker QS4, lower corona first intermediate relay KA3, lower corona second intermediate relay KA4, third fault alarm light LED3, fourth fault alarm light LED4. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in one or more embodiments of this specification will be clearly and completely described below in conjunction with the drawings in one or more embodiments of this specification. Obviously, the one or more embodiments described are only part of the embodiments of this specification, not all of the embodiments. Based on one or more embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this document.

[0034] It should be noted that although the device schematics illustrate functional module divisions and the flowcharts illustrate logical sequences, in certain circumstances, the steps shown or described may be performed in a sequence that differs from the module divisions in the device or the sequence in the flowcharts. The terms "first," "second," and so on, in the specification, claims, and drawings, are used to distinguish similar items and are not necessarily used to describe a specific sequence or precedence.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein are for the purpose of describing the embodiments of this application only and are not intended to limit this application.

[0036] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] In some industrial waste gas treatment processes, ozone is used to remove pollutants such as NOx and SOx from flue gases. While ozone easily decomposes at high concentrations and pressures, it is highly corrosive to equipment materials. In particular, ozone can erode the insulation of motors in equipment like fans, degrading insulation performance and potentially causing short circuits, overheating, and other faults, seriously shortening the fan's service life. If a fan malfunctions and ozone cannot be promptly removed, it can damage components such as the motor.

[0038] Based on this, the embodiments of the present application provide a control device, method, equipment and medium for a corona ozone extraction blower, which aims to promptly treat ozone to avoid ozone damaging the motor and shortening the service life of the blower.

[0039] The embodiments of the present application are further described below with reference to the accompanying drawings.

[0040] Figure 1 This is a structural block diagram of a control device for a corona ozone extraction blower provided in an embodiment of the present application.

[0041] First, as Figure 1 As shown, a control device for a corona ozone extraction blower is provided, wherein the corona ozone extraction blower includes an exhaust component and a corona component, and the device includes:

[0042] A frequency converter, a first PLC module and a second PLC module, wherein the first PLC module, the second PLC module and the corona ozone extraction blower are respectively connected to the frequency converter; wherein the first PLC module is used to detect the fault alarm signal output by the frequency converter; the frequency converter is used to control the exhaust component to decelerate according to a preset deceleration time to reduce the operating frequency when the first PLC module detects the fault alarm signal; the second PLC module is used to stop receiving the operating feedback signal when the operating frequency of the exhaust component is lower than the preset frequency value, so that the electrodes of the corona component stop discharging, so as to ensure that the exhaust component extracts all the ozone generated by the corona component.

[0043] It should be noted that the control device for the corona ozone extraction blower includes a frequency converter, a first PLC module, and a second PLC module. The first and second PLC modules are each connected to the frequency converter. The first PLC module is used to detect fault alarm signals output by the frequency converter. Specifically, the frequency converter also includes a thermal circuit breaker. When the corona ozone extraction blower fails, or the thermal circuit breaker trips due to a corona ozone extraction blower failure, the input of the first PLC module is energized, detecting the fault alarm signal output by the frequency converter. Using the first PLC module to determine whether the corona ozone extraction blower has failed allows for customizable complex fault detection logic. When production processes or equipment change, the detection logic can be adjusted by modifying the program without requiring large-scale hardware modifications, saving time and cost, and improving the flexibility and programmability of the control device. The PLC also has strong anti-interference capabilities and can accurately detect fault signals in harsh industrial environments, such as those exposed to electromagnetic interference, dust, and humidity, reducing false alarms and missed alarms. It also has a self-diagnostic function that monitors its own hardware status in real time and issues prompt alarms when faults are detected.

[0044] It should also be noted that the frequency converter is configured to control the exhaust assembly of the corona ozone extraction blower to decelerate according to a preset deceleration time to reduce the operating frequency when the first PLC module detects a fault alarm signal. Specifically, when the input terminal of the first PLC module is turned on, i.e., when the frequency converter detects a fault alarm signal, the frequency converter controls the motor in the exhaust assembly of the corona ozone extraction blower to decelerate according to a preset deceleration time to reduce the motor's operating frequency. In addition, the second PLC module is used to stop receiving the operation feedback signal when the operating frequency of the exhaust component of the corona ozone extraction blower is lower than the preset frequency value, so that the electrodes of the corona component of the corona ozone extraction blower stop discharging to ensure that the exhaust component extracts all the ozone generated by the corona component. Specifically, in some embodiments, the preset frequency value can be 25Hz. When the operating frequency of the exhaust component is greater than or equal to 25Hz, the exhaust component is in normal operation. When the operating frequency of the exhaust component is less than 25Hz, the exhaust component operates abnormally, the input end of the second PLC module is disconnected, and the operation feedback signal is stopped. The electrodes of the corona component of the corona ozone extraction blower stop discharging, that is, stop generating ozone, while the exhaust component is still running to ensure that the exhaust component extracts all the ozone generated by the corona component, avoiding the problem of motor erosion due to ozone not being processed in time when the corona ozone extraction blower fails.

[0045] Through the device provided in the first aspect, ozone can be treated in a timely manner when a motor fails, thereby protecting the motor from ozone erosion, ensuring the stable operation of the fan, and extending the service life of the fan, reducing the failure rate, maintenance cost and replacement frequency of the equipment, improving the efficiency of troubleshooting, and thus improving the reliability of the entire system.

[0046] In one possible implementation, Figure 1 As shown, the device also includes a third PLC module, which is connected to the frequency converter, wherein the third PLC module includes a first intermediate relay, which is used to output a start signal when the normally open contact of the first intermediate relay is closed, and send the start signal to the frequency converter, so that the frequency converter controls the start of the corona ozone extraction blower.

[0047] It should be noted that the third PLC module is used to output a start signal when the normally open contact of the first intermediate relay is closed, and send the start signal to the frequency converter, so that the frequency converter controls the start of the corona ozone extraction fan. By controlling the start of the corona ozone extraction fan by the frequency converter, the motor can start more smoothly, the fan impeller accelerates slowly, reducing mechanical impact force and extending the service life of the motor.

[0048] In one possible implementation, Figure 1As shown, the device also includes an anti-backflow valve, which is connected to the frequency converter and the corona ozone extraction blower, wherein the anti-backflow valve also includes a second intermediate relay, which is used to close the valve of the anti-backflow valve of the corona ozone extraction blower in the shutdown state, so as to control the ozone generated by the corona ozone extraction blower in the running state to prevent it from entering the corona ozone extraction blower in the shutdown state.

[0049] It should be noted that, in some embodiments, because the exhaust gas discharged by the two fans contains ozone and a common ozone treatment device is used to filter the exhaust gas, when the production line produces a single corona product, one of the fans may stop running according to the process requirements. At this time, due to the strong oxidizing property of ozone, the impeller and motor coil and other components in the stopped fan will be exposed to an environment containing ozone. After a long period of accumulation, ozone will corrode the motor coil and bearings of the fan, causing damage to the motor, increasing equipment maintenance costs and downtime. Based on this, the embodiment of the present application proposes to set an anti-backflow valve on each corona ozone extraction fan, wherein the anti-backflow valve also includes a second intermediate relay for closing the valve of the anti-backflow valve of the corona ozone extraction fan in the shutdown state, so as to control the ozone generated by the corona ozone extraction fan in the running state from entering the corona ozone extraction fan in the shutdown state. Preventing ozone from backflowing into the corona ozone extraction fan in the shutdown state through the anti-backflow valve not only protects the fan from ozone corrosion, but also reduces the risk of motor damage due to overheating, corrosion or electrical failure, thereby extending the service life of the motor. In addition, when the fan fails, by closing the anti-backflow valve in time, the fan failure rate can be significantly reduced, thereby reducing the maintenance and replacement costs required due to equipment damage, and can also reduce the risk of ozone leakage and improve the reliability and safety of the system.

[0050] In one possible implementation, Figure 2 As shown, the anti-backflow valve includes a valve position detection module, and the position detection module includes a position sensor. The position sensor is used to detect whether the valve position of the anti-backflow valve is in a fully open position or a fully closed position to ensure that the anti-backflow valve is in a fully open state or a fully closed state.

[0051] It should be noted that the anti-backflow valve includes a valve position detection module, and the position detection module includes a position sensor. The position sensor can be a position state sensing switch, which is used to detect whether the valve position of the anti-backflow valve is in a fully open position or a fully closed position to ensure that the anti-backflow valve is in a fully open state or a fully closed state. When the anti-backflow valve is fully open, it allows the fluid to flow in one direction, and the fluid can pass through the valve smoothly, reducing fluid resistance and energy consumption, and improving the operating efficiency of the system. When the anti-backflow valve is fully closed, it can completely isolate the fluid flow and prevent ozone from backflowing into the corona ozone extraction fan in the shutdown state, protecting the fan from ozone corrosion, and preventing fluid leakage, reducing resource waste and environmental pollution. Therefore, during operation and maintenance, it is necessary to ensure that the anti-backflow valve is in the correct state.

[0052] In one possible implementation, Figure 2 As shown, the position detection module further includes a fault alarm light for giving an alarm when the position sensor detects that the valve position of the anti-backflow valve is neither in the fully open position nor in the fully closed position.

[0053] It should be noted that the position detection module also includes a fault alarm light. When the position sensor detects that the valve position of the anti-backflow valve is neither in the fully open position nor in the fully closed position, the fault alarm light will be triggered to alarm, so that the staff can respond in time and take timely measures to help prevent the occurrence of corona ozone extraction fan failure, or prevent ozone leakage, and improve the safety, reliability and efficiency of the control device.

[0054] In one possible implementation, the device further includes an interactive module developed based on WINCC (Windows Control Center), which is connected to the frequency converter and configured to generate an alarm after the first PLC module receives a fault alarm signal output by the frequency converter.

[0055] It should be noted that WINCC is industrial monitoring software based on the Windows operating system. It features a user-friendly graphical user interface and powerful functionality, enabling users to monitor and manage complex industrial processes and equipment in real time. By connecting an interactive module developed based on WINCC to the inverter, the first PLC module can generate an alarm after receiving the inverter's fault alarm signal. This alarm displays data, trend charts, and alarm information, and provides flexible data recording and analysis capabilities. This allows users to monitor and control the corona ozone extraction blower in a timely manner, and conduct timely troubleshooting and repairs when the corona ozone extraction blower fails.

[0056] In some embodiments, two corona ozone extraction blowers are usually operated simultaneously, such as Figure 3 and Figure 4As shown, they are respectively the circuit principle diagram of the control device of the upper corona ozone extraction blower and the circuit principle diagram of the control device of the lower corona ozone extraction blower.

[0057] Specifically, if Figure 3 As shown, Figure 3 This is a circuit schematic diagram of the control device of the upper corona ozone extraction blower provided in an embodiment of the present application. The control device of the upper corona ozone extraction blower includes an upper corona inverter INV1, an upper corona ozone extraction blower 100, an upper corona first PLC module 200, an upper corona second PLC module 300, an upper corona third PLC module 400 and an upper corona backflow prevention valve 500. The upper corona ozone extraction blower 100, the upper corona first PLC module 200, the upper corona second PLC module 300 and the upper corona third PLC module 400 are respectively connected to the upper corona inverter INV1, and the upper corona backflow prevention valve 500 is connected to the upper corona ozone extraction blower 100 through the upper corona inverter INV1. Among them, the upper corona first PLC module 200 is used to detect the fault alarm signal output by the upper corona inverter INV1. Specifically, the upper corona inverter INV1 also includes an upper corona thermal protection circuit breaker QS1. When the upper corona ozone extraction fan 100 fails, or the upper corona thermal protection circuit breaker QS1 trips due to the failure of the upper corona ozone extraction fan 100, the input end of the upper corona first PLC module 200 is turned on, that is, the fault alarm signal output by the upper corona inverter INV1 is detected; the upper corona inverter INV1 is used to control the exhaust component of the upper corona ozone extraction fan 100 to decelerate according to the preset deceleration time to reduce the operating frequency when the upper corona first PLC module 200 detects the fault alarm signal; the upper corona second PLC module 300 is used to stop receiving the operating feedback signal when the operating frequency of the exhaust component of the upper corona ozone extraction fan 100 is lower than the preset frequency value, so as to reduce the operating frequency of the upper corona ozone extraction fan 100 The electrodes of the corona assembly stop discharging to ensure that the exhaust assembly extracts all the ozone generated by the corona assembly; the upper corona third PLC module 400 is used to output a start signal when the normally open contact of the upper corona first intermediate relay KA1 is closed, and send the start signal to the upper corona inverter INV1, so that the upper corona inverter INV1 controls the upper corona ozone extraction fan 100 to start; the upper corona anti-backflow valve 500 includes an upper corona second intermediate relay KA2, which is used to close the valve of the anti-backflow valve of the corona ozone extraction fan in the shutdown state to control the ozone generated by the corona ozone extraction fan in the running state to prevent it from entering the corona ozone extraction fan in the shutdown state. In particular, the upper corona anti-backflow valve 500 also includes a valve position detection module, which includes a position sensor, a first fault alarm light LED1 and a second fault alarm light LED2, for ensuring that the upper corona anti-backflow valve 500 is in a fully open state or a fully closed state.

[0058] Specifically, if Figure 4As shown, Figure 4 This is a circuit schematic diagram of the control device of the lower corona ozone extraction blower provided in an embodiment of the present application. The control device of the lower corona ozone extraction blower includes a lower corona inverter INV2, a lower corona ozone extraction blower 600, a lower corona first PLC module 700, a lower corona second PLC module 800, a lower corona third PLC module 900 and a lower corona backflow prevention valve 1000. The lower corona ozone extraction blower 600, the lower corona first PLC module 700, the lower corona second PLC module 800 and the lower corona third PLC module 900 are respectively connected to the lower corona inverter INV2, and the lower corona backflow prevention valve 1000 is connected to the lower corona ozone extraction blower 600 through the lower corona inverter INV2. Among them, the lower corona first PLC module 700 is used to detect the fault alarm signal output by the lower corona inverter INV2. Specifically, the lower corona inverter INV2 also includes a lower corona thermal protection circuit breaker QS4. When the lower corona ozone extraction fan 600 fails, or the lower corona thermal protection circuit breaker QS4 trips due to the failure of the lower corona ozone extraction fan 600, the input end of the lower corona first PLC module 700 is turned on, that is, the fault alarm signal output by the lower corona inverter INV2 is detected; the lower corona inverter INV2 is used to control the exhaust component of the lower corona ozone extraction fan 600 to decelerate according to the preset deceleration time to reduce the operating frequency when the lower corona first PLC module 700 detects the fault alarm signal; the lower corona first PLC module 700 is used to stop receiving the operating feedback signal when the operating frequency of the exhaust component of the lower corona ozone extraction fan 600 is lower than the preset frequency value, so that the corona of the lower corona ozone extraction fan 600 The electrodes of the component stop discharging to ensure that the exhaust component extracts all the ozone generated by the corona component; the lower corona third PLC module 900 is used to output a start signal when the normally open contact of the lower corona first intermediate relay KA3 is closed, and the start signal is sent to the lower corona inverter INV2, so that the lower corona inverter INV2 controls the lower corona ozone extraction fan 600 to start; the lower corona anti-backflow valve 1000 includes the lower corona second intermediate relay KA4, which is used to close the valve of the anti-backflow valve of the corona ozone extraction fan in the shutdown state to control the ozone generated by the corona ozone extraction fan in the running state to prevent it from entering the corona ozone extraction fan in the shutdown state. In particular, the lower corona anti-backflow valve 1000 also includes a valve position detection module, the position detection module includes a position sensor, a third fault alarm light LED3 and a fourth fault alarm light LED4, which is used to ensure that the lower corona anti-backflow valve 1000 is in a fully open state or a fully closed state.

[0059] Figure 5 This is an optional flow chart of the control method of the corona ozone extraction blower provided in the embodiment of the present application. Figure 5 The method may include but is not limited to steps S1100 to S1200.

[0060] In a second aspect, an embodiment of the present application provides a method for controlling a corona ozone extraction blower, the method comprising:

[0061] S1100. When the first PLC module receives the fault alarm signal output by the frequency converter, it detects that the corona ozone extraction fan has failed. At the same time, the exhaust component decelerates according to the preset deceleration time of the frequency converter to reduce the operating frequency.

[0062] It should be noted that the control device for the corona ozone extraction blower includes a frequency converter, a first PLC module, and a second PLC module. The first and second PLC modules, along with the corona ozone extraction blower, are each connected to the frequency converter. The first PLC module is used to detect fault alarm signals output by the frequency converter. Specifically, the frequency converter also includes a thermal circuit breaker. When the corona ozone extraction blower fails, or the thermal circuit breaker trips due to a corona ozone extraction blower failure, the input of the first PLC module is energized, detecting the fault alarm signal output by the frequency converter. Using the first PLC module to determine whether the corona ozone extraction blower has failed allows for customizable complex fault detection logic. Changes to production processes or equipment can be adjusted by modifying the program without requiring major hardware modifications, saving time and cost, and improving the flexibility and programmability of the control device. The PLC also boasts strong anti-interference capabilities, enabling accurate fault signal detection in harsh industrial environments, such as those exposed to electromagnetic interference, dust, and humidity, reducing false alarms and missed alerts. The PLC also features a self-diagnostic function that monitors hardware status in real time and issues prompt alerts when faults are detected.

[0063] It should also be noted that the frequency converter is configured to control the exhaust assembly of the corona ozone extraction blower to decelerate according to a preset deceleration time to reduce the operating frequency when the first PLC module detects a fault alarm signal. Specifically, when the input terminal of the first PLC module is turned on, i.e., when the frequency converter detects a fault alarm signal, the frequency converter controls the motor in the exhaust assembly of the corona ozone extraction blower to decelerate according to a preset deceleration time to reduce the motor's operating frequency.

[0064] S1200. When the operating frequency of the exhaust component is lower than the preset frequency value, the second PLC module stops receiving the operating feedback signal, so that the electrodes of the corona component stop discharging to ensure that the exhaust component extracts all the ozone generated by the corona component.

[0065] It should be noted that the second PLC module is used to stop receiving the operation feedback signal when the operating frequency of the exhaust component of the corona ozone extraction fan is lower than the preset frequency value, so that the electrodes of the corona component of the corona ozone extraction fan stop discharging to ensure that the exhaust component extracts all the ozone generated by the corona component. Specifically, in some embodiments, the preset frequency value can be 25Hz. When the operating frequency of the exhaust component is greater than or equal to 25Hz, the exhaust component is in normal operation. When the operating frequency of the exhaust component is less than 25Hz, the exhaust component operates abnormally, the input end of the second PLC module is disconnected, and the operation feedback signal is stopped. The electrodes of the corona component of the corona ozone extraction fan stop discharging, that is, ozone is stopped, while the exhaust component is still running to ensure that the exhaust component extracts all the ozone generated by the corona component, avoiding the problem of motor erosion due to ozone not being processed in time when the corona ozone extraction fan fails.

[0066] Through the method provided in the second aspect, ozone can be treated in a timely manner when a motor fails, thereby protecting the motor from ozone erosion, ensuring the stable operation of the fan, extending the service life of the fan, reducing the failure rate, maintenance cost and replacement frequency of the equipment, and improving the efficiency of troubleshooting, thereby improving the reliability of the entire system.

[0067] In one possible implementation, the device further includes a backflow prevention valve, which is provided on the corona ozone extraction blower, wherein the backflow prevention valve further includes a second intermediate relay, and the method further includes: using the second intermediate relay to close the valve of the backflow prevention valve of the corona ozone extraction blower in a shutdown state, so as to control the ozone generated by the corona ozone extraction blower in a running state to prevent it from entering the corona ozone extraction blower in a shutdown state.

[0068] It should be noted that, in some embodiments, because the exhaust gas discharged by the two fans contains ozone and a common ozone treatment device is used to filter the exhaust gas, when the production line produces a single corona product, one of the fans may stop running according to the process requirements. At this time, due to the strong oxidizing property of ozone, the impeller and motor coil and other components in the stopped fan will be exposed to an environment containing ozone. After a long period of accumulation, ozone will corrode the motor coil and bearings of the fan, causing damage to the motor, increasing equipment maintenance costs and downtime. Based on this, the embodiment of the present application proposes to set an anti-backflow valve on each corona ozone extraction fan, wherein the anti-backflow valve also includes a second intermediate relay for closing the valve of the anti-backflow valve of the corona ozone extraction fan in the shutdown state, so as to control the ozone generated by the corona ozone extraction fan in the running state from entering the corona ozone extraction fan in the shutdown state. Preventing ozone from backflowing into the corona ozone extraction fan in the shutdown state through the anti-backflow valve not only protects the fan from ozone corrosion, but also reduces the risk of motor damage due to overheating, corrosion or electrical failure, thereby extending the service life of the motor. In addition, when the fan fails, by closing the anti-backflow valve in time, the fan failure rate can be significantly reduced, thereby reducing the maintenance and replacement costs required due to equipment damage, and can also reduce the risk of ozone leakage and improve the reliability and safety of the system.

[0069] The present application also provides an electronic device, such as Figure 6 As shown, the electronic device 1400 includes:

[0070] one or more processors 1410;

[0071] The memory 1420 stores one or more programs. When the one or more programs are executed by the one or more processors 1410, the one or more processors 1410 implement the control method of the corona ozone extraction blower provided in any embodiment of the present application.

[0072] The memory 1420 is a non-transient network system that can be used to store non-transient software programs and non-transient computer executable programs. In addition, the memory 1420 may include a high-speed random access memory and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some embodiments, the memory 1420 may optionally include a memory 1420 remotely located relative to the processor 1410, and these remote memories 1420 may be connected to the processor 1410 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0073] The memory 1420 can be implemented in the form of a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 1420 can store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory 1420 and is called by the processor 1410 to execute the methods of the embodiments of this application.

[0074] The processor 1410 can be implemented using a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of the present application.

[0075] In some embodiments, the electronic device further comprises:

[0076] Input / output interface, used to realize information input and output;

[0077] Communication interface, used to realize communication interaction between this device and other devices. Communication can be achieved through wired means (such as USB, network cable, etc.) or wireless means (such as mobile network, Wi-Fi, Bluetooth, etc.);

[0078] A bus that transmits information between various components of the device (e.g., the processor 1410 , memory 1420 , input / output interfaces, and communication interfaces);

[0079] The processor 1410 , the memory 1420 , the input / output interface, and the communication interface can be communicatively connected to each other within the device via a bus.

[0080] An embodiment of the present application further provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are used to execute the control method of the corona ozone extraction blower provided in any embodiment of the present application.

[0081] An embodiment of the present application also provides a computer program product, including a computer program or computer instructions, which are stored in a computer-readable storage medium. The processor of a computer device reads the computer program or computer instructions from the computer-readable storage medium, and the processor executes the computer program or computer instructions, so that the computer device executes the control method of the corona ozone extraction blower provided in any embodiment of the present application.

[0082] The system architecture and application scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Those skilled in the art will appreciate that with the evolution of the system architecture and the emergence of new application scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems.

[0083] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0084] Those skilled in the art will appreciate that all or some of the steps and systems disclosed above can be implemented as software, firmware, hardware, or any suitable combination thereof. Some or all of the physical components may 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 may be distributed on computer-readable media, which may include computer storage media (or non-transitory media) and communication media (or transient media). As is well 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 disks (DVDs) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. Furthermore, as is well known to those skilled in the art, communication media typically embodies computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0085] The above description of some embodiments of the present application with reference to the accompanying drawings does not limit the scope of the present invention. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and essence of the present invention shall be within the scope of the present application.

[0086] Those skilled in the art will appreciate that all or some of the steps in the methods, systems, and functional modules / units in the devices disclosed above may be implemented as software, firmware, hardware, or appropriate combinations thereof.

[0087] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0088] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0089] The various embodiments in this specification are described in a progressive manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences between the other embodiments. In particular, the system embodiments are generally similar to the method embodiments, so the description is relatively simple. For relevant parts, refer to the description of the method embodiments.

[0090] The foregoing description of this specification describes specific embodiments. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in an order different from that described in the embodiments and still achieve the desired results. Furthermore, the processes depicted in the accompanying drawings do not necessarily require the specific order shown or the sequential order to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0091] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but are not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and essence of the present invention should be within the scope of the present invention.

Claims

1. A control device for a corona ozone extraction blower, characterized in that: The corona ozone extraction fan includes an exhaust component and a corona component, and the device includes: A frequency converter, a first PLC module and a second PLC module, wherein the first PLC module, the second PLC module and the corona ozone extraction blower are respectively connected to the frequency converter; Wherein, the first PLC module is used to detect the fault alarm signal output by the frequency converter; The frequency converter is used to control the exhaust component to decelerate according to a preset deceleration time to reduce the operating frequency when the first PLC module detects the fault alarm signal; The second PLC module is used to stop receiving the operation feedback signal when the operating frequency of the exhaust component is lower than the preset frequency value, so as to stop the discharge of the electrodes of the corona component to ensure that the exhaust component can completely remove the ozone generated by the corona component.

2. The device according to claim 1, characterized in that The device also includes a third PLC module, which is connected to the frequency converter, wherein the third PLC module includes a first intermediate relay, which is used to output a start signal when the normally open contact of the first intermediate relay is closed, and send the start signal to the frequency converter, so that the frequency converter controls the corona ozone extraction blower to start.

3. The device according to claim 1, characterized in that The device also includes an anti-backflow valve, which is connected to the frequency converter and the corona ozone extraction blower, wherein the anti-backflow valve also includes a second intermediate relay, which is used to close the valve of the anti-backflow valve of the corona ozone extraction blower in a stopped state, so as to control the ozone generated by the corona ozone extraction blower in a running state to prevent it from entering the corona ozone extraction blower in a stopped state.

4. The device according to claim 3, characterized in that The anti-backflow valve includes a valve position detection module, and the position detection module includes a position sensor. The position sensor is used to detect whether the valve position of the anti-backflow valve is in a fully open position or a fully closed position to ensure that the anti-backflow valve is in a fully open state or a fully closed state.

5. The device according to claim 4, characterized in that The position detection module further includes a fault alarm light for giving an alarm when the position sensor detects that the valve position of the backflow prevention valve is neither in the fully open position nor in the fully closed position.

6. The device according to claim 1, characterized in that The device further comprises an interactive module developed based on WINCC, the interactive module being connected to the frequency converter and configured to generate an alarm after the first PLC module receives a fault alarm signal output by the frequency converter.

7. A method for controlling a corona ozone extraction blower, characterized in that: The control device for the corona ozone extraction blower according to claim 1, wherein the method comprises: When the first PLC module receives the fault alarm signal output by the frequency converter, it detects that the corona ozone extraction blower has failed, and at the same time, the exhaust component decelerates according to the preset deceleration time of the frequency converter to reduce the operating frequency; When the operating frequency of the exhaust component is lower than the preset frequency value, the second PLC module stops receiving the operation feedback signal, so that the electrodes of the corona component stop discharging, to ensure that the exhaust component extracts all the ozone generated by the corona component.

8. The method according to claim 7, characterized in that The device further includes a backflow prevention valve, which is provided on the corona ozone extraction blower, wherein the backflow prevention valve further includes a second intermediate relay, and the method further includes: The second intermediate relay is used to close the anti-backflow valve of the corona ozone extraction blower in the shutdown state, so as to prevent the ozone generated by the corona ozone extraction blower in the running state from entering the corona ozone extraction blower in the shutdown state.

9. An electronic device, characterized in that: The electronic device includes a memory and a processor, the memory stores a computer program, and the processor implements the control method of the corona ozone extraction blower according to any one of claims 7 to 8 when executing the computer program.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the control method of the corona ozone extraction blower according to any one of claims 7 to 8.

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