Control system for an extraction installation

Abstract

The invention relates to a control system (10) for an extraction installation (100) that comprises an air conveying device (126a, 126b), at least one air filter (112a-112d) and a cleaning apparatus (120a, 120b) for the air filter (112a-112d), the control system having an electronic control device (14) that is designed to control the operation of the air conveying device (126a, 126b) and / or the operation of the cleaning apparatus (120a, 120b).

Description

[0001] Applicant: Hengst SE

[0002] Nienkamp 55-85 48147 Münster

[0003] Control system for an extraction system

[0004] The invention relates to a control system for an extraction system comprising an air conveying device, at least one air filter and a cleaning device for the air filter, with an electronic control device which is designed to control the operation of the air conveying device and / or the operation of the cleaning device.

[0005] The invention further relates to an extraction system with an air conveying device for generating an air flow in the extraction system, at least one air filter, a cleaning device for cleaning the at least one air filter and a control system for controlling the operation of the air conveying device and / or the operation of the cleaning device.

[0006] Furthermore, the invention relates to a method for controlling an extraction system comprising an air conveying device, at least one air filter and a cleaning device for the air filter, with a control system, comprising the step of: controlling the operation of the air conveying device and / or the operation of the cleaning device by means of an electronic control device of the control system.

[0007] Extraction systems of this type are used in various processing and manufacturing processes to remove dust, chips, flakes, or fibers from an air stream. Such extraction systems are used to clean exhaust gas or exhaust air streams, for example, for flue gas cleaning or in cement plants, foundries, lime works, or the chemical industry.

[0008] During operation of such extraction systems, a filter cake forms on the surface of the air filters, which impairs filter performance. To remove the filter cake, the air filters of the extraction system are subjected to compressed air at regular or irregular intervals. The pressure surge breaks up the filter cake and causes it to fall under the influence of gravity into a collection container located below the air filters.

[0009] To ensure that even finer dust particles have sufficient time to settle into the collection container located below the filter, the operation of the air conveying system in conventional extraction systems is temporarily interrupted for a so-called run-on time after compressed air is applied to the air filter. During this run-on time, even finer dust particles have sufficient time to settle into the collection container.

[0010] However, switching off the air conveying system leads to an interruption of the air extraction and thus impairs the processing or treatment process in which the extraction system is used.

[0011] Furthermore, a system is known from DE 10 2013 110 269 A1 in which the extraction fan is switched off or its speed is reduced while compressed air is applied to a blower nozzle of a cleaning device. However, this and other cleaning concepts do not take into account the actual cleaning success or the actual cleaning effect during filter cleaning and thus continue to lead to an avoidable impairment of the processing or manufacturing process in which the extraction system is used. The object underlying the invention is therefore to further reduce cleaning-related operational adjustments or interruptions of extraction systems.

[0012] The object is achieved by a control system of the type mentioned at the outset, wherein the electronic control device is designed to adapt the operation of the air conveying device and / or the operation of the cleaning device during a cleaning process depending on the achievement of a predetermined cleaning success during the cleaning process.

[0013] The control system therefore allows the cleaning process to be adjusted as required, thus avoiding unnecessary disruptions to the extraction system's operation due to cleaning.

[0014] The air conveying device generates an air flow in the extraction system. By adjusting the air flow in the extraction system, filter cleaning can be improved during a cleaning process. Using the cleaning device, the air filter can be subjected to one or more fluid discharges during a cleaning process to loosen particles adhering to the air filter. By adjusting the one or more fluid discharges, filter cleaning can be improved during a cleaning process. Instead of air, another fluid, such as a liquid, can also be conveyed through the conveying device. The air conveying device can therefore be a fluid conveying device.

[0015] By using the control system, compressed air, process air, and thus energy can be saved. Furthermore, the service life of the filter media used can be significantly extended. The control system can have multiple interfaces, for example, for signal-conducting the control device with the air conveying device and / or the cleaning device. The control system can include a memory for storing values ​​for defining the desired cleaning success. The specified cleaning success can also be a specified cleaning effect. The control system can include a housing in which the electronic control device is arranged.

[0016] In a preferred embodiment of the control system according to the invention, the control device is configured to evaluate the achievement of the specified cleaning success during the cleaning process based on whether a differential pressure generated by the at least one air filter during the cleaning process reaches, exceeds, or falls below a specified differential pressure limit. The differential pressure refers to the pressure difference upstream and downstream of the at least one air filter of the extraction system. The specified differential pressure limit can be a dynamic target value that depends on the current air volume flow generated by the air conveying device. The specified cleaning success can be achieved, for example, if a static or dynamic differential pressure limit is undershot.The control device can be configured to evaluate the achievement of the specified cleaning success during the cleaning process based on whether a specified differential pressure change was caused during the cleaning process. The specified differential pressure change can be a dynamic target value that depends on the current air volume flow generated by the air conveying device. Values ​​for the desired differential pressure changes or the desired differential pressure limit values ​​can be stored in a memory of the control system. The desired differential pressure changes or the desired differential pressure limit values ​​can be adjustable.

[0017] In a further development of the control system according to the invention, the control device is configured to adapt the operation of the air conveying device depending on whether the specified cleaning success has been achieved during the cleaning process by changing, in particular reducing, the air volume flow generated by the air conveying device during the cleaning process, in particular stepwise. The control device preferably implements volume flow control. The air volume flow is preferably reduced by at least one percent and / or at most 99%, particularly preferably by at least 5% and / or at most 50%. By adjusting, in particular reducing, the air volume flow, the settling and sinking of the particles is promoted, so that they are not conveyed towards the air filter.When gradually adjusting the air volume flow generated by the air conveying device during the cleaning process, the adjustment takes place in several volume flow change steps. If the specified cleaning success is achieved, the air conveying device is controlled such that a specified operating volume flow is established during the next cleaning process. The extent of the air volume flow change or the volume flow change steps can be stored in a memory of the control system and / or can be adjustable. The control device is preferably configured to gradually adapt the operation of the conveying device if the specified cleaning success is continually missed by changing, in particular reducing, the air volume flow generated by the air conveying device. The gradual reduction of the air volume flow takes place until a volume flow limit value, in particular a minimum volume flow value, is reached.Alternatively, the air volume flow is gradually reduced until a predetermined number of adjustment steps is reached. The extent of the steps of the volume flow change can be stored and / or adjustable in a memory of the control system. Preferably, the control device is configured to at least partially, in particular gradually, reverse the change in the air volume flow upon achieving the predetermined cleaning success during the cleaning process.

[0018] The control system according to the invention is advantageously further developed in that the control device is configured to predetermine an operation of the cleaning device during the cleaning process in which a predetermined number of fluid ejections is generated by the cleaning device in several consecutive pressure surge cycles. The fluid ejections can be ejected from one or more ejection nozzles. If multiple fluid ejections are generated, they are generated at different times so that the fluid pressure in the cleaning device can build up again.

[0019] Furthermore, a control system according to the invention is advantageous in which the control device is configured to adapt the operation of the cleaning device depending on whether the predetermined cleaning success has been achieved during the cleaning process by changing, in particular increasing, the discharge pressure of the fluid discharges generated by the cleaning device, in particular step by step. The control device preferably implements pressure regulation. The extent of the discharge pressure change can be stored and / or adjustable in a memory of the control system. The discharge pressure set upon achievement of the predetermined cleaning success is preferably stored. During the subsequent cleaning process, an discharge pressure is then initially set which is reduced by one pressure change step or by several pressure change steps compared to the stored discharge pressure.When gradually adjusting the discharge pressure of the fluid discharges generated by the cleaning device during the cleaning process, the adjustment takes place in several pressure change steps. The control device is preferably configured to gradually adjust the operation of the cleaning device if the specified cleaning success is continuously missed by changing, in particular increasing, the discharge pressure of the fluid discharges generated by the cleaning device. The characteristics of the discharge pressure change steps can be stored and / or adjustable in a memory of the control system. Preferably, the control device is configured to at least partially, in particular gradually, reverse the change in the discharge pressure upon achievement of the specified cleaning success during the cleaning process.In a further preferred embodiment of the control system according to the invention, the control device is configured to gradually adapt the operation of the air conveying device in the event of a persistent failure to achieve the predetermined cleaning success by changing, in particular reducing, the air volume flow generated by the air conveying device during each pressure surge cycle. Preferably, the air volume flow is reduced by one volume flow change step during each pressure surge cycle. Alternatively or additionally, the control device is configured to gradually adapt the operation of the cleaning device in the event of a persistent failure to achieve the predetermined cleaning success by changing, in particular increasing, the discharge pressure of the fluid discharges generated by the cleaning device during each pressure surge cycle. Preferably, the discharge pressure of the generated fluid discharges is increased by one pressure change step during each pressure surge cycle.

[0020] Furthermore, a control system according to the invention is preferred in which the control device is configured to determine the influences of various operating adjustments during the cleaning process on the cleaning success and / or one or more system-specific and / or filter-specific operating parameters and, on the basis of the determined influences, to determine a sequence of operating adjustments to be observed during subsequent cleaning processes. The control system thus optimally adjusts the operation of the extraction system to its specific use. System-specific operating parameters can be, for example, the energy consumption of the extraction system, in particular related to a specific form of energy, for example compressed air energy, or the duration of uninterrupted filtration without interruption in cleaning.Filter-specific operating parameters can be, for example, the service life of the filter or filter medium or the long-term filtration performance, i.e. the differential pressure change over time. In order to optimise energy consumption, for example, in flue gas filtration, the control system can specify that the operation of the air conveying device is first adjusted until a predefined air volume flow limit is reached before the operation of the cleaning device is adjusted by the control device. On the other hand, in order to optimise the filter service life in flue gas filtration, the control system can, for example, specify that the operation of the cleaning device is first adjusted until a predefined discharge pressure limit of the fluid discharges generated by the cleaning device is reached before the operation of the air conveying device is adjusted by the control device.

[0021] In another preferred embodiment of the control system according to the invention, the control device is configured to adapt the operation of the air conveying device until a predefined air volume flow limit is reached if the predefined cleaning success is persistently missed, before the operation of the cleaning device is adjusted by the control device. Alternatively, the control device can be configured to adapt the operation of the cleaning device until a predefined discharge pressure limit of the fluid discharges generated by the cleaning device is reached if the predefined cleaning success is persistently missed, before the operation of the air conveying device is adjusted by the control device. Preferably, the air volume flow is first gradually reduced before the discharge pressure of the fluid discharges is gradually increased.Alternatively, the discharge pressure of the fluid discharges is first gradually increased before the air volume flow generated by the air conveying device is gradually reduced.

[0022] Furthermore, a control system according to the invention is preferred in which the control device is configured to adapt the operation of the cleaning device, in particular stepwise, depending on whether the specified cleaning success is achieved during the cleaning process by changing, in particular shortening, the time intervals between the pressure surge cycles. When adjusting the time intervals between the pressure surge cycles stepwise, the adjustment takes place in several time interval change steps. Preferably, the control device is configured to at least partially, in particular stepwise, reverse the change in the time intervals between the pressure surge cycles upon achieving the specified cleaning success during the cleaning process.The control device can also be configured to adapt the operation of the cleaning device, in particular stepwise, depending on whether the specified cleaning success is achieved during the cleaning process by changing, in particular extending, the ejection time of the fluid ejections generated by the cleaning device. When adjusting the ejection time of the fluid ejections generated by the cleaning device, the adjustment takes place in several ejection time change steps. The control device can be configured to adapt the operation of the cleaning device, in the event of a persistent failure to achieve the specified cleaning success, by changing, in particular extending, the ejection time of one or more fluid ejections generated by the cleaning device. Preferably, a pressure source without a limited compressed air quantity is used here.The extent of the ejection time change can be stored and / or adjustable in a memory of the control system. Preferably, the control device is configured to at least partially, in particular gradually, reverse the change in the ejection time upon achieving the specified cleaning success during the cleaning process.

[0023] In a further development of the control system according to the invention, the control device is configured to adapt the operation of the cleaning device, in particular stepwise, depending on whether the specified cleaning success is achieved during the cleaning process by changing, in particular increasing, the number of fluid ejections generated by the cleaning device per pressure surge cycle. When gradually adjusting the number of fluid ejections generated by the cleaning device per pressure surge cycle, the adjustment takes place in several ejection number change steps. The control device can be configured to gradually adapt the operation of the cleaning device if the specified cleaning success is continuously missed by changing, in particular increasing, the number of fluid ejections generated by the cleaning device.The extent of the change in the number of fluid discharges can be stored and / or adjustable in a memory of the control system. Preferably, the control device is configured to at least partially, in particular gradually, reverse the change in the number of fluid discharges upon achieving the specified cleaning success during the cleaning process.

[0024] In another preferred embodiment of the control system according to the invention, the control device is configured to at least partially, in particular gradually, reverse or cancel the change in the air volume flow upon achieving the predetermined cleaning success during a cleaning process after a follow-up time has elapsed after the predetermined cleaning success has been achieved. The follow-up time can be in a range between 2 seconds and 600 seconds, in particular in a range between 5 seconds and 200 seconds. There are dusts that require a comparatively long time to settle into the one or more collection containers below the air filter. The air volume flow set upon achieving the predetermined cleaning success is preferably stored.During the following cleaning process, an air volume flow is initially set which is increased by several volume flow change steps compared to the stored air volume flow.

[0025] The object underlying the invention is further achieved by an extraction system of the type mentioned above, wherein the control system of the extraction system according to the invention is designed according to one of the embodiments described above. With regard to the advantages and modifications of the extraction system according to the invention, reference is first made to the advantages and modifications of the control system according to the invention. The air conveying device of the extraction system can be a fan or a ventilator. The air filter can be a replaceable filter and / or a round filter. The cleaning device can be a compressed air device with which compressed air pulses can be generated in the direction of the at least one filter.

[0026] The extraction system according to the invention is further advantageously further developed by a sensor arrangement configured to detect the pressure on the raw side of the extraction system and the pressure on the clean side of the extraction system. Alternatively or additionally, the sensor arrangement is configured to detect the differential pressure between the raw side of the extraction system and the clean side of the extraction system. The sensor arrangement preferably comprises a pressure sensor on the raw side of the extraction system and a pressure sensor on the clean side of the extraction system.

[0027] The object underlying the invention is further achieved by a method of the type mentioned at the outset, wherein the control device adapts the operation of the air conveying device and / or the cleaning device within the scope of the method according to the invention during a cleaning process depending on the achievement of a predetermined cleaning success during the cleaning process. By means of the method, preferably an extraction system with a control system according to one of the embodiments described above and / or an extraction system according to one of the embodiments described above is controlled. With regard to the advantages and modifications of the method according to the invention, reference is therefore first made to the advantages and modifications of the control system according to the invention and the advantages and modifications of the extraction system according to the invention.

[0028] The predetermined cleaning success, depending on which the control device adapts the operation of the air conveying device and / or the cleaning device, can also be a predetermined cleaning effect. In a preferred embodiment of the method according to the invention, the control device evaluates the achievement of the predetermined cleaning success during the cleaning process based on whether a differential pressure generated by the at least one air filter during the cleaning process reaches, falls below, or exceeds a predetermined differential pressure limit. The control device can also evaluate the achievement of the predetermined cleaning success during the cleaning process based on whether a predetermined differential pressure change is caused during the cleaning process.

[0029] The method according to the invention is further advantageously developed in that the control device of the cleaning device predetermines an operation during the cleaning process in which a predetermined number of fluid discharges is generated by the cleaning device in several consecutive pressure surge cycles. Furthermore, a method according to the invention is advantageous in which the control device adapts the operation of the air conveying device depending on the achievement of the predetermined cleaning success during the cleaning process by changing, in particular reducing, the air volume flow generated by the air conveying device during the cleaning process.Alternatively or additionally, the control device adapts the operation of the cleaning device depending on the achievement of the predetermined cleaning success during the cleaning process by changing, in particular increasing, the discharge pressure of the fluid discharges generated by the cleaning device during the cleaning process.

[0030] Preferred embodiments of the invention are explained and described in more detail below with reference to the accompanying drawings.

[0031] Fig. 1 shows an embodiment of the extraction system according to the invention in a perspective view; Fig. 2 shows the extraction system shown in Fig. 1 in a further perspective view;

[0032] Fig. 3 shows the extraction system shown in Fig. 1 in a sectional view; and

[0033] Fig. 4 shows the development of operating and control parameters of an extraction system according to the invention over time in a diagrammatic representation.

[0034] Figs. 1 and 2 show an external view of an extraction system 100. The extraction system 100 has a housing 102 into which an air flow to be filtered can be introduced via inlets 104a, 104b. Air filters are arranged in the housing 102, through which the air flow can flow to filter the air flow. The filtered air flow can then be discharged from the housing 102 of the extraction system 100 via outlets 106a, 106b.

[0035] The extraction system 100 has collecting containers 108a, 108b in a lower area, which serve to collect material that has been removed from the air filters arranged in the housing 102 by a cleaning process.

[0036] The extraction system 100 further comprises a control system 10 for controlling the operation of the extraction system 100. The control system 10 comprises a housing 12, an electronic control device 14, and a memory 16 connected to the electronic control device 14.

[0037] Fig. 3 shows that the air flow to be filtered initially flows into the housing 102 on the raw side 110. The air flow to be filtered is then passed through the air filters 112a-112d, through which the air flow is filtered and reaches the clean side 114. The air filters 112a-112d are replaceable round filters. On the raw side 110 there is a pressure sensor 116a, which is configured to detect the pressure on the raw side 110 in the housing 102 of the extraction system 100. On the clean side 114 there is a pressure sensor 116b, which is configured to detect the pressure on the clean side 114 in the housing 102 of the extraction system 100. The pressure sensors 116a, 116b form a sensor arrangement 118, via which the differential pressure between the raw side 110 of the extraction system 100 and the clean side 114 of the extraction system 100 can be detected.

[0038] Above the air filters 112a-112d are cleaning devices 120a, 120b for cleaning the air filters 112a-112d. The cleaning devices 120a, 120b are compressed air devices with which fluid discharges, namely compressed air bursts, can be generated in the direction of the air filters 112a-112d. For this purpose, the cleaning devices 120a, 120b each have a compressed air reservoir 122a, 122b. The compressed air reservoir 122a is connected to the air nozzles 124a, 124b. The compressed air reservoir 122b is connected to the air nozzles 124c, 124d. The air filter 112a can be cleaned via fluid discharges from the air nozzle 124a. The air filter 112b can be cleaned by fluid discharged from the air nozzle 124b. The air filter 112c can be cleaned by fluid discharged from the air nozzle 124c. The air filter 112d can be cleaned by fluid discharged from the air nozzle 124d.

[0039] The extraction system 100 further comprises two air conveying devices 126a, 126b for generating an air flow in the extraction system 100. The air conveying devices 126a, 126b are fans via which air can be sucked in through the inlets 104a, 104b and air can be blown out via the outlets 106a, 106b.

[0040] The electronic control device 14 of the control system 10 serves to control the operation of the air conveying devices 126a, 126b and the operation of the cleaning devices 120a, 120b. The control device 14 of the control system 10 is configured to adapt the operation of the air conveying devices 126a, 126b and the operation of the cleaning devices 120a, 120b during a cleaning process depending on the achievement of a predetermined cleaning success during the cleaning process.

[0041] The cleaning concept implemented by a control system 10 is shown in Fig. 4.

[0042] The sensor arrangement 118 monitors the differential pressure dp between the raw side 110 and the clean side 114 of the extraction system 100. When the differential pressure dp reaches a cleaning limit value dpA, the electronic control device 14 initiates a cleaning process to remove the particulate material from the filter surface of the air filters 112a-112d facing the raw side 110. The cleaning process extends over a cleaning duration tA. The control device 14 is configured to predetermine an operation mode for the cleaning devices 120a, 120b during the cleaning process, in which a predetermined number of fluid discharges A1-A5 are generated by the cleaning devices 120a, 120b in several consecutive pressure surge cycles z1-z11. The fluid discharges A1-A5 of a pressure surge cycle z1-z11 are generated with a time delay so that the fluid pressure in the cleaning devices 120a, 120b can build up again.

[0043] The control device 14 is designed to control the operation of the air conveying devices 126a, 126b and the operation of the

[0044] Cleaning devices 120a, 120b are adapted during the cleaning process depending on whether a predetermined cleaning success has been achieved during the cleaning process. The control device 14 evaluates the achievement of the predetermined cleaning success based on whether a predetermined differential pressure limit value dpG was reached during the cleaning process. The predetermined differential pressure limit value dpG is a dynamic target value which depends on the current air volume flow v generated by the air conveying devices 126a, 126b. At the beginning of the cleaning process, the air volume flow v generated by the air conveying devices 126a, 126b is at the level v1, which corresponds to an operating volume flow vB that occurs during proper filter operation of the extraction system 100. The fluid discharges A1-A5 assigned to the pressure surge cycle z1 initially have a discharge pressure p1.Since the pressure surge cycle z1 does not reduce the differential pressure dp to the differential pressure limit value dpG, the control device 14 causes the air volume flow v generated by the air conveying devices 126a, 126b to be reduced by a volume flow change Av to the level v2. Since the differential pressure limit value dpG depends on the current air volume flow v, the differential pressure limit value dpG is also reduced by the limit change AdpG.

[0045] Since the differential pressure limit value dpG is again not reached by the pressure surge cycle z2, the control device 14 initiates a further reduction of the air volume flow v generated by the air conveying devices 126a, 126b to level v3 and, in the next step, to level v4. The control device 14 is thus configured to gradually adjust the operation of the air conveying devices 126a, 126b depending on whether the specified cleaning success is achieved during the cleaning process by reducing the air volume flow v generated by the air conveying devices 126a, 126b during the cleaning process.

[0046] After the pressure surge cycle z4, the target value of the differential pressure limit dpG is still not reached. If the specified cleaning success is continuously missed, the control device 14 is configured to first adjust the operation of the air conveying devices 126a, 126b until a specified air volume flow limit vG is reached before the operation of the cleaning devices 120a, 120b is adjusted by the control device 14. Since the level v4 of the air volume flow v corresponds to the air volume flow limit vG, the control device 14 initiates a gradual increase in the discharge pressure by a pressure change Ap starting with the pressure surge cycle z5. Thus, the fluid discharges generated by the cleaning devices 120a, 120b have the discharge pressure p2 during the pressure surge cycle z5, the discharge pressure p3 during the pressure surge cycle z6, and the discharge pressure p4 during the pressure surge cycle z7.The control device 14 is thus configured to gradually adapt the operation of the cleaning devices 120a, 120b depending on the achievement of the predetermined cleaning success during the cleaning process by increasing the discharge pressure p1-p4 of the fluid discharges A1-A5 generated by the cleaning devices 120a, 120b.

[0047] Since the differential pressure limit dpG is still not reached after the pressure surge cycle z8, the control device 14 initiates a shortening of the time intervals dt1-dt3 ​​between the pressure surge cycles z9-z11. The time interval dt1 maintained between the pressure surge cycles z1-z9 is first reduced to the time period dt2 and then to the time period dt3. After the end of the pressure surge cycle z11, the differential pressure dp falls below the differential pressure limit dpG, so that the intended cleaning success has been achieved.

[0048] The control device 14 is configured to reverse or cancel the change in the air volume flow v upon achieving the specified cleaning success only after a follow-up time tN has elapsed. After the last pressure surge cycle z11, the air volume flow v is therefore only increased back to the operating volume flow vB after the follow-up time tN has elapsed.

[0049] Reference symbol

[0050] 10 Control system 12 Housing 14 Electronic control device 16 Memory

[0051] 100 Extraction system 102 Housing

[0052] 104a, 104b Inlets 106a, 106b Outlets 108a, 108b Collecting container 110 Raw side 112a-112d Air filter 114 Clean side

[0053] 116a, 116b Pressure sensors 118 Sensor arrangement

[0054] 120a, 120b Cleaning devices 122a, 122b Compressed air reservoirs 124a-124d Air nozzles 126a, 126b Air conveying devices

[0055] A1-A5 Fluid discharges dp Differential pressure dpA Cleaning limit dpG Differential pressure limit dt1-dt3 ​​Time intervals p1-p4 Discharge pressures tA Cleaning duration tN Run-on time v Air volume flow v1-v4 Air volume flows vG Air volume flow limit vB Operating volume flow z1-z11 Pressure surge cycles Av Volume flow change

[0056] Ap pressure change

[0057] AdpG limit change

Claims

Claims Control system (10) for an extraction system (100) comprising an air conveying device (126a, 126b), at least one air filter (112a-112d) and a cleaning device (120a, 120b) for the air filter (112a-112d), with an electronic control device (14) which is configured to control the operation of the air conveying device (126a, 126b) and / or the operation of the cleaning device (120a, 120b); characterized in that the control device (14) is configured to adapt the operation of the air conveying device (126a, 126b) and / or the operation of the cleaning device (120a, 120b) during a cleaning process depending on the achievement of a predetermined cleaning success during the cleaning process.Control system (10) according to claim 1, characterized in that the control device (14) is configured to evaluate the achievement of the predetermined cleaning success during the cleaning process based on whether a differential pressure (dp) generated by the at least one air filter (112a-112d) reaches, exceeds, or falls below a predetermined differential pressure limit value (dpG) during the cleaning process. Control system (10) according to claim 1 or 2, characterized in that the control device (14) is configured to adapt the operation of the air conveying device (126a, 126b) depending on the achievement of the predetermined cleaning success during the cleaning process by changing, in particular reducing, the air volume flow (v) generated by the air conveying device (126a, 126b) during the cleaning process, in particular stepwise. Control system (10) according to one of the preceding claims, characterized in that the control device (14) is configured to predetermine an operation of the cleaning device (120a, 120b) during the cleaning process, in which a predetermined number of fluid ejections (A1-A5) are generated by the cleaning device (120a, 120b) in several consecutive pressure surge cycles (z1-z11). Control system (10) according to claim 4, characterized in that the control device (14) is configured to adapt the operation of the cleaning device (120a, 120b) depending on the achievement of the predetermined cleaning success during the cleaning process by changing, in particular increasing, the ejection pressure (p1-p4) of the fluid ejections (A1-A5) generated by the cleaning device (120a, 120b), in particular stepwise.Control system (10) according to one of claims 3 to 5, characterized in that the control device (14) is configured to gradually adapt the operation of the air conveying device (126a, 126b) in the event of a persistent failure to achieve the predetermined cleaning success by changing, in particular reducing, the air volume flow (v) generated by the air conveying device (126a, 126b) during each pressure surge cycle (z1-z11); and / or to gradually adapt the operation of the cleaning device (120a, 120b) in the event of a persistent failure to achieve the predetermined cleaning success by changing, in particular increasing, the discharge pressure (p1-p4) of the fluid discharges (A1-A5) generated by the cleaning device (120a, 120b) during each pressure surge cycle (z1-z11). Control system (10) according to one of the preceding claims. characterized in that the control device (14) is designed to determine the influences of various operating adjustments during the cleaning process on the cleaning success and / or one or more system-specific and / or filter-specific operating parameters and, on the basis of the determined influences, to determine a sequence of operating adjustments to be observed during subsequent cleaning processes.Control system (10) according to one of the preceding claims, characterized in that the control device (14) is configured to adapt the operation of the air conveying device (126a, 126b) until a predetermined air volume flow limit value (vG) is reached, if the predetermined cleaning success is continuously missed, before the operation of the cleaning device (120a, 120b) is adjusted by the control device (14); or to adapt the operation of the cleaning device (120a, 120b) until a predetermined discharge pressure limit value of the fluid discharges (AI-AS) generated by the cleaning device (120a, 120b) is reached, before the operation of the air conveying device (126a, 126b) is adjusted by the control device (14).Control system (10) according to one of claims 4 to 8, characterized in that the control device (14) is configured to adapt the operation of the cleaning device (120a, 120b) depending on the achievement of the predetermined cleaning success during the cleaning process by changing, in particular shortening, the time intervals (dt1-dt3) between the pressure surge cycles (z1-z11), in particular stepwise. Control system (10) according to one of the preceding claims, characterized in that the control device (14) is configured to adapt the operation of the cleaning device (120a, 120b) in. Depending on the achievement of the predetermined cleaning success during the cleaning process, by changing, in particular increasing, the number of fluid ejections (AI-AS) generated by the cleaning device (120a, 120b) per pressure surge cycle (z1-z11), in particular step by step, to adapt.

11. Control system (10) according to one of the preceding claims, characterized in that the control device (14) is designed to at least partially, in particular step by step, reverse or cancel the change in the air volume flow (v) upon achievement of the predetermined cleaning success during a cleaning process after expiry of a follow-up time (tN) after achievement of the predetermined cleaning success.

12. Extraction system (100), comprising an air conveying device (126a, 126b) for generating an air flow in the extraction system (100); at least one air filter (112a-112d); a cleaning device (120a, 120b) for cleaning the at least one air filter (112a-112d); and a control system (10) for controlling the operation of the air conveying device (126a, 126b) and / or the operation of the cleaning device (120a, 120b); characterized in that the control system (10) is designed according to one of the preceding claims.

13. Extraction system (100) according to claim 12, characterized by a sensor arrangement (118) which is designed to detect the pressure on the raw side (110) of the extraction system (100) and the pressure on the clean side (114) of the extraction system (100) and / or the differential pressure (dp) between the raw side (110) of the extraction system (100) and the clean side (114) of the extraction system (100). Method for controlling an extraction system (100) comprising an air conveying device (126a, 126b), at least one air filter (112a-112d) and a cleaning device (120a, 120b) for the air filter (112a-112d) with a control system (10), in particular an extraction system (100) with a control system (10) according to one of claims 1 to 11 and / or an extraction system (100) according to one of claims 12 to 13, comprising the step: Controlling the operation of the air conveying device (126a, 126b) and / or the operation of the cleaning device (120a, 120b) by means of an electronic control device (14) of the control system (10), characterized in that the control device (14) adapts the operation of the air conveying device (126a, 126b) and / or the cleaning device (120a, 120b) during a cleaning process depending on the achievement of a predetermined cleaning success during the cleaning process. Method according to claim 14, characterized in that the control device (14) evaluates the achievement of the predetermined cleaning success during the cleaning process based on whether a differential pressure (dp) generated by the at least one air filter (112a-112d) reaches, falls below, or exceeds a predetermined differential pressure limit value (dpG) during the cleaning process.Method according to claim 14 or 15, characterized in that the control device (14) of the cleaning device (120a, 120b) specifies an operation during the cleaning process in which a predetermined number of fluid ejections (A1-A5) are generated by the cleaning device (120a, 120b) in several consecutive pressure surge cycles (z1-z11). Method according to one of claims 14 to 16. characterized in that the control device (14) controls the operation of the air conveying device (126a, 126b) depending on the achievement of the predetermined cleaning success during the cleaning process by changing, in particular reducing, the air flow supplied by the air conveying device during the cleaning process (126a, 126b) generated air volume flow (v); and / or the operation of the cleaning device (120a, 120b) depending on the achievement of the predetermined cleaning success during the cleaning process by changing, in particular increasing, the discharge pressure (p1-p4) of the Cleaning device (120a, 120b) adapts to the fluid discharges (A1-A5) generated during the cleaning process.

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