Air filtration monitoring system

Abstract

Embodiments herein relate to air filtration monitoring systems that may measure the amount of air and / or the velocity of air. In an embodiment, a monitoring system for an industrial dust collector is included, the monitoring system having a pressure sensor and a control circuit, where the control circuit may be in signal communication with the pressure sensor. The monitoring system may store a value of a previously measured air quantity and / or a value of an air velocity, and may calculate a value of a real-time air quantity and / or a value of a real-time air velocity using the previously measured value of the air quantity and / or the value of the air velocity and data from the pressure sensor. Other embodiments are also included herein.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application was filed as a PCT international application on April 26, 2023 in the name of Donaldson Company Inc. as a U.S. national corporation and as the applicant for all designated countries, with U.S. citizen Brent R. Nelson as the inventor for all designated countries, and this application claims priority to U.S. Provisional Patent Application No. 63 / 336,610 filed on April 29, 2022, the entire contents of which are incorporated herein by reference. Technical Field

[0003] Embodiments herein relate to monitoring devices for filtration systems. More specifically, embodiments herein relate to monitoring systems that can measure air volume and / or air velocity. Background Art

[0004] Various fluid filtration systems have been developed to remove particles and pollutants. In some cases, a system for cleaning air or other gas streams loaded with particles includes an air filter assembly having a filter element arranged in a housing. The filter element can take various forms including a bag, a sock or a cartridge, and the bag, sock or cartridge include suitable filter media, such as fabric, pleated paper, etc. In operation, a gas stream contaminated with particles will usually pass through the housing so that the particles are captured and retained by one or more filter elements. This filtration system is very reliable in operation. However, regular maintenance is required. In addition, events that cause system performance to be lower than expected levels may occur sometimes. Summary of the invention

[0005] Embodiments herein relate to an air filtration monitoring system that can measure air volume and / or air velocity. In a first aspect, a monitoring system for an industrial dust collector is included, the monitoring system having a pressure sensor and a control circuit, wherein the control circuit can communicate with the pressure sensor in a signal manner. The monitoring system can store previously measured values ​​of air volume and / or air velocity, and can use previously measured values ​​of air volume and / or air velocity and data from the pressure sensor to calculate real-time values ​​of air volume and / or real-time values ​​of air velocity.

[0006] In a second aspect, in addition to one or more of the above or following aspects, or in an alternative to certain aspects, the monitoring system can calculate the real-time air volume and / or air velocity value by multiplying the previously measured air volume and / or air velocity value by the square of the quotient of the current relative airflow value divided by the relative airflow value measured when the air volume and / or air velocity was previously measured. The relative airflow value can be obtained using data from a pressure sensor.

[0007] In a third aspect, in addition to one or more of the above or following aspects, or in an alternative to certain aspects, the monitoring system may calculate the real-time air volume and / or air speed value by multiplying the previously measured air volume value and / or air speed value by the square of the quotient of the current pressure value divided by the pressure value measured when the air volume and / or air speed was previously measured.

[0008] In a fourth aspect, in addition to one or more of the above or below aspects, or in alternative to certain aspects, the pressure sensor may include a static pressure sensor.

[0009] In a fifth aspect, in addition to or in the alternative to one or more of the above or below aspects, a static pressure sensor may be configured to measure pressure within a main duct portion of the industrial dust collector.

[0010] In a sixth aspect, in addition to one or more of the above or below aspects, or in the alternative of certain aspects, the static pressure sensor may be configured to measure the pressure within a branch of a main duct of the industrial dust collector.

[0011] In a seventh aspect, in addition to one or more of the above or below aspects, or in the alternative of certain aspects, the static pressure sensor can be configured to measure the pressure within a duct of the industrial dust collector upstream of the air filter.

[0012] In an eighth aspect, in addition to one or more of the above or following aspects, or in an alternative to certain aspects, the static pressure sensor can be configured to measure the pressure within a duct of an industrial dust collector or a duct having a diameter of 4 inches to 48 inches that is fluidly connected to the industrial dust collector.

[0013] In a ninth aspect, in addition to one or more of the above or following aspects, or in an alternative to certain aspects, the pressure sensor can be configured to be: mounted on the industrial dust collector, mounted in the industrial dust collector, and / or mounted to be in fluid communication with the industrial dust collector.

[0014] In a tenth aspect, in addition to one or more of the above or following aspects, or in an alternative to certain aspects, the pressure sensor may include a plurality of static pressure sensors, wherein the plurality of static pressure sensors may be configured to measure pressure within air ducts associated with different industrial dust collectors.

[0015] In an eleventh aspect, in addition to one or more of the above or following aspects, or in an alternative to certain aspects, the monitoring system can be configured to: issue an alarm when the real-time air volume value and / or the real-time air speed value is outside the target range.

[0016] In a twelfth aspect, in addition to or in the alternative to one or more of the above or below aspects, the system can be configured to receive input related to the target range from a system user.

[0017] In a thirteenth aspect, in addition to one or more of the above or following aspects, or in an alternative to certain aspects, the monitoring system can be configured to: issue an alarm if the real-time air volume value and / or the real-time air speed value is outside the target range without considering the relative airflow value.

[0018] In a fourteenth aspect, in addition to one or more of the above or following aspects, or in the alternative of certain aspects, previously measured air volume and / or air velocity can be input into the system based on manually obtained measurement results.

[0019] In a fifteenth aspect, in addition to one or more of the above or following aspects, or in an alternative to certain aspects, previously measured air volume and / or air velocity can be input into the system based on measurement results obtained using at least one of a Pitot tube, a vane anemometer, or a hot wire anemometer.

[0020] In a sixteenth aspect, in addition to or in the alternative to one or more of the above or below aspects, the monitoring system can be configured to transmit real-time data to a remote computing source.

[0021] In the seventeenth aspect, in addition to one or more of the above or following aspects, or in an alternative to certain aspects, the real-time data may include at least one selected from the following: real-time pressure data, real-time air volume value and real-time air speed value.

[0022] In an eighteenth aspect, in addition to one or more of the above or following aspects, or in the alternative of certain aspects, the value of the real-time air volume can be in the range of 500 cfm (cubic feet per minute) to 50,000 cfm.

[0023] In a nineteenth aspect, in addition to one or more of the above or following aspects, or in the alternative of certain aspects, the pressure sensor and the control circuit can be co-located relative to the monitored industrial dust collector.

[0024] In a twentieth aspect, in addition to or in the alternative to one or more of the above or below aspects, the pressure sensor and the control circuit may be located remote from each other.

[0025] In a twenty-first aspect, a method for monitoring an industrial dust collector may be included. The method may include: storing previously measured values ​​of air volume and / or air velocity; measuring a real-time pressure value in an area in fluid communication with the industrial air collector; and calculating a real-time air volume value and / or real-time air velocity value using the real-time pressure value and the previously measured values ​​of air volume and / or air velocity.

[0026] In a twenty-second aspect, in addition to one or more of the above or following aspects, or in alternatives to certain aspects, the method may further include measuring a real-time pressure value within a main duct portion of the industrial dust collector.

[0027] In a twenty-third aspect, in addition to one or more of the above or following aspects, or in alternatives to certain aspects, the method may further include measuring a real-time pressure value within a branch portion of a main duct of the industrial dust collector.

[0028] In a twenty-fourth aspect, in addition to one or more of the above or following aspects, or in an alternative to certain aspects, the method may further include measuring a real-time pressure value of the industrial dust collector located upstream of the air filter.

[0029] In a twenty-fifth aspect, in addition to one or more of the above or following aspects, or in an alternative to certain aspects, the method may also include measuring a real-time pressure value within an industrial dust collector or a pipe with a diameter of 4 inches to 48 inches that is fluidly connected to the industrial dust collector.

[0030] In a twenty-sixth aspect, in addition to one or more of the above or following aspects, or in an alternative to certain aspects, the pressure sensor can be mounted on the industrial dust collector, mounted in the industrial dust collector, and / or mounted to be in fluid communication with the industrial dust collector.

[0031] In a twenty-seventh aspect, in addition to or in the alternative to one or more of the above or below aspects, the method may further include measuring pressure within air ducts associated with different industrial air collectors.

[0032] In a twenty-eighth aspect, in addition to one or more of the above or following aspects, or in an alternative to certain aspects, the method may also include: issuing an alarm when the real-time air volume value and / or the real-time air speed value is outside the target range.

[0033] In a twenty-ninth aspect, in addition to one or more of the above or following aspects, or in the alternative of certain aspects, the method may further include receiving input related to the target range from a system user.

[0034] In the thirtieth aspect, in addition to one or more of the above or following aspects, or in an alternative to certain aspects, the method may also include: issuing an alarm if the real-time air volume value and / or the real-time air speed value is outside the target range without considering the relative airflow value.

[0035] In a thirty-first aspect, in addition to one or more of the above or following aspects, or in the alternative of certain aspects, the method may also include transmitting the real-time data to a remote computing source.

[0036] In aspect 32, in addition to one or more of the above or following aspects, or in alternatives to certain aspects, the real-time data may include at least one selected from the following: a real-time pressure value, a real-time air volume value, and a real-time air velocity value.

[0037] The present invention is an overview of some of the teachings in the teaching of this application, and is not intended to be exclusive or exhaustive of this subject matter. Further details can be found in the detailed description and the appended claims. Other aspects will become apparent to those skilled in the art upon reading and understanding the following detailed description and viewing the accompanying drawings that form a part thereof, and each of the drawings in the accompanying drawings should not be considered as limiting. The scope of this article is limited by the appended claims and their legal equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Various aspects may be more fully understood in conjunction with the following drawings, in which:

[0039] Figure 1 is a schematic front perspective view of an air filtration system according to various embodiments herein.

[0040] Figure 2 is a schematic rear perspective view of an air filtration system with a monitoring system according to various embodiments herein.

[0041] Figure 3 is a schematic cross-sectional view of some aspects of an air filtration system according to various embodiments herein.

[0042] Figure 4 is a schematic diagram illustrating elements of a monitoring device according to various embodiments herein.

[0043] Figure 5 is a graph showing the relative air flow rate of an industrial dust collector over time.

[0044] Figure 6 is a graph showing the relative air flow rate of an industrial dust collector over time.

[0045] Figure 7 is a schematic diagram of various portions of an industrial dust collector with monitoring capabilities according to various embodiments herein.

[0046] Fig. 8A is a schematic diagram of various portions of an industrial dust collector system with a monitoring system according to various embodiments herein.

[0047] Figure 8B is a schematic diagram of various portions of an industrial dust collector system with a monitoring system according to various embodiments herein.

[0048] Fig. 9 is a schematic front perspective view of an air filtration system with a monitoring system according to various embodiments herein.

[0049] Fig.10 is a schematic diagram illustrating elements of a filtration monitoring device according to various embodiments herein.

[0050] Fig.11 is a schematic diagram illustrating a filtering system data communication environment according to various embodiments herein.

[0051] Fig.12 is a schematic diagram illustrating a filtering system data communication environment according to various embodiments herein.

[0052] Fig.13 is a schematic front perspective view of an air filtration system with a monitoring device according to various embodiments herein.

[0053] Although various embodiments are susceptible to various modifications and alternative forms, the details of various embodiments have been shown by way of example and the accompanying drawings, and the details of various embodiments will be described in detail. However, it should be understood that the scope of this article is not limited to the specific embodiments described. On the contrary, the purpose is to cover modifications, equivalents and alternatives that fall within the spirit and scope of this article. DETAILED DESCRIPTION

[0054] As mentioned above, there are many situations where it is useful to filter out dust, particulate matter or other pollutants from fluid flow, and there are many various types of filter systems to achieve this. For example, a type of air filtration system (or industrial dust collector) has a clean air chamber (or clean side / downstream side) and a dirty air chamber (or dirty side / upstream side). The two chambers can be separated by a structure that can be called a tube sheet (tube sheet). In many cases, the tube sheet has a plurality of openings so that air can pass between the clean air chamber and the dirty air chamber. The filter element can be positioned on the opening so that the air (dirty air) loaded with particles introduced into the dirty air chamber must pass through the filter element and move into the clean air chamber. When air moves through the filter element, the particulate matter in the dirty air is collected on the filter element. Cleaned air is discharged into the environment from the clean air chamber or is recirculated for other purposes.

[0055] Industrial air filtration systems / dust collector systems are usually designed to operate under specific air volume movement levels. For example, a specific dust collector system can be designed to operate with an amount of 4000cfm in a specific factory. The design amount can vary based on many factors, such as the size of the factory, the type of particles produced in the factory, the quantity of other filtration systems present, the safety factor considered in the system design, etc. In any case, the air volume that passes through the dust collector system is insufficient (for example, less than the amount of the design amount) and may mean that dust / particles accumulate in various places, such as accumulating in air ducts, at specific places, in equipment parts and / or in the air. The accumulated dust / particles may cause various environmental, health and safety issues that the factory may need to solve.

[0056] While measurements of relative air flow can be useful for some purposes, measurements alone may be insufficient because the relative air flow may remain essentially constant over time while the air volume may still be at undesirable levels. It is therefore important to monitor the volume of air passing through an air filtration system to ensure that the system is operating properly.

[0057] Unfortunately, real-time measurement of air volume may not be feasible. Typical air volume measurement devices / sensors such as pitot tubes, vane anemometers, or hot wire anemometers are generally not suitable for real-time measurement in industrial dust collectors (complexity, cost, reliability, etc.).

[0058] However, the embodiments of the monitoring system herein can be used to reliably measure the air volume in the dust collector system in the venue in real time. In various embodiments, a monitoring system for an industrial dust collector is included herein, the monitoring system having a pressure sensor and a control circuit that communicates with the pressure sensor in a signal manner. The monitoring system can store previously measured values ​​of air volume and / or air velocity, and then use the data from the pressure sensor and the previously measured values ​​of air volume and / or air velocity to calculate the real-time value of air volume and / or the real-time value of air velocity.

[0059] In various embodiments, methods for monitoring industrial dust collectors are included. Exemplary methods may include: storing previously measured values ​​of air volume and / or air velocity; measuring real-time pressure values ​​in an area in fluid communication with an industrial air collector; and calculating real-time air volume values ​​and / or real-time air velocity values ​​using real-time pressure values ​​and previously measured values ​​of air volume and / or air velocity. As used herein, the term "real-time" shall include real-time measurements as well as near real-time measurements, wherein measurements of air volume and / or air velocity are provided immediately or nearly immediately, so that the current state of the underlying system can be monitored.

[0060] It is understood that the value of air velocity can be converted to the value of air volume by multiplying the air velocity by the cross-sectional area of ​​the duct or other air passage. Therefore, the technology for monitoring air volume mentioned in this article can also be applied to air velocity, and vice versa.

[0061] Now refer to Figure 1 , shows a schematic front perspective view of an exemplary air filtration system 100 according to various embodiments herein. In this example, Figure 1 The air filtration system 100 shown in FIG. 1 is generally in the shape of a box and includes an upper wall panel 116 and two pairs of opposing side wall panels 117 ( Figure 1 1. However, it will be appreciated that the air filtration system 100 may take many different shapes and configurations.

[0062] The air filtration system 100 includes a dirty air duct 111 for receiving dirty or polluted air (i.e., air having dust / particulate matter therein) into the air filtration system 100. A clean air duct 113 may be provided for exhausting clean or filtered air from the air filtration system 100. The air filtration system 100 includes a plurality of filter elements ( Figure 1 In use, each of the inlet openings 112 is sealed by a cover (not shown) so that dirty air entering the air filtration system 100 does not escape from the inlet openings 112.

[0063] The air filtration system 100 may also include a funnel 118 to collect particulate matter separated from the dirty air flow as described herein. The funnel 118 may include an inclined wall to facilitate the collection of particulate matter, and in some embodiments, the funnel 118 may include a driven auger or other mechanism for removing the collected particulate matter.

[0064] In some embodiments, the air filtration system 100 can include a fan 132 to provide movement of air through the air filtration system 100. However, in other embodiments, air can be moved through the air filtration system 100 by a fan or other device that is not part of the system.

[0065] The ventilation filtration system 100 may also include a pre-existing control box 140, which may include a pre-existing control circuit to control the filtration system. In some embodiments, the monitoring system herein may be combined with the pre-existing control box 140 and / or may communicate with the pre-existing control box 140. However, in some embodiments, such as in some retrofit scenarios, there is no electrical communication between the pre-existing control box 140 and / or components thereof such as the pre-existing control circuit and the monitoring device herein. Although not intending to be bound by theory, it is believed that such electrical separation may provide a safety advantage because the pre-existing control box 140 and components therein are responsible for the operation of the filtration system 100, while the monitoring device is only responsible for monitoring the filtration system 100. In this way, the monitoring device cannot be used as a means to gain control of the operation of the filtration system 100.

[0066] Now refer to Figure 2 , shows a schematic rear perspective view of an air filtration system with a monitoring device according to various embodiments herein. Figure 2 Shown with Figure 1 Many of the same elements are shown in FIG. 1 , but are shown in a rear perspective view. Figure 2 A compressed air manifold 248 is also shown.

[0067] Now refer to Figure 3 , shows a schematic cross-sectional view of some aspects of an exemplary air filtration system 100 according to various embodiments herein. The interior of the air filtration system 100 includes a tube sheet 322 that divides the interior of the housing into a clean air chamber 324 and a dirty air chamber 326. The air filtration system 100 includes a clean air duct 113 through which clean air exits the clean air chamber 324 during operation of the air filtration system 100. The illustrated air filtration system 100 includes a filter element 340 located in the dirty air chamber 326 (on the dirty or upstream side).

[0068] A pulse collector 330 may be included and may be disposed within the clean air chamber and may be removed through an aperture ( Figure 3 322) is attached to and / or adjacent to the tube sheet 322 so that air pulses from the pulse generator 350 pass through the pulse collector 330 and enter the interior volume of the filter element 340. Air can be provided to the pulse generator 350 from the compressed air manifold 248, which itself can receive compressed air from an air compressor or a central source of plant compressed air. The release of air from the compressed air manifold 248 to the pulse generator 350 can be controlled by a valve (pulse valve), which can be of various types, including but not limited to diaphragm valves, solenoid valves, and other valves for controlling fluid flow.

[0069] According to various embodiments herein, one or more pressure sensors may be positioned at various points in or near the filtration system to provide pressure data from which real-time air volume measurements may be made, as described herein. Figure 3 The sensor 360 is shown located within the dirty air chamber 326. However, in some embodiments, one or more pressure sensors may be located in addition to the air filtration system 100. Figure 3 In some embodiments, the position of the sensor described may refer to a location where the sensor can be configured to detect, rather than the physical location of the sensor. For example, the sensor itself may not actually be positioned in a particular area, but can still generate data reflecting the pressure value at that location.

[0070] Now refer to Figure 4, a schematic diagram of elements of a monitoring device 400 according to various embodiments herein is shown. It will be appreciated that various embodiments may include a greater or lesser number of components, and that the schematic diagram is merely illustrative. The monitoring device 400 may include a housing 402 and a control circuit 404. The control circuit 404 may include various electronic components, including but not limited to a microprocessor, a microcontroller, an FPGA (field programmable gate array) chip, an application specific integrated circuit (ASIC), and the like.

[0071] In various embodiments, the monitoring device 400 may include a first pressure sensor channel interface 406 (as used herein, references to a pressure sensor shall include a pressure transducer unless the context dictates otherwise) and a first pressure sensor 426. In various embodiments, the monitoring device 400 may optionally include a second pressure sensor channel interface 414 and a second pressure sensor 424. In various embodiments, the monitoring device 400 may optionally include additional one or more sensor channel interfaces 422 and additional one or more sensors 448.

[0072] The pressure sensor herein can be of various types. The pressure sensor herein can include, but is not limited to, a static pressure sensor, a differential pressure sensor, a gauge pressure sensor, etc. In various specific embodiments herein, one or more static pressure sensors are used. The pressure sensor herein can include a pressure sensor based on resistance, capacitance, piezoelectricity, optics, metal film, ceramic thick film and / or MEMS components. The pressure sensor herein can also include a design based on a diaphragm and / or a strain gauge.

[0073] In some embodiments, the additional sensors used herein may include a microphone. The microphone herein may include a vibration sensor. The microphone and / or vibration sensor herein may be of various types, including but not limited to unidirectional, omnidirectional, MEMS-based microphones, piezoelectric microphones, magnetic microphones, electret condenser microphones, accelerometers, etc.

[0074] In some embodiments, the monitoring device 400 may include one or more additional sensors, such as an accelerometer, a temperature sensor, an optical sensor, etc. For example, in some embodiments, the monitoring device 400 may include a 3-axis accelerometer 430 .

[0075] In various embodiments, monitoring device 400 may include power supply circuit 432. In some embodiments, power supply circuit 432 may include various components including, but not limited to, battery 434, capacitors, power receivers such as wireless power receivers, transformers, rectifiers, and the like.

[0076] In various embodiments, monitoring device 400 may include output device 436. Output device 436 may include various components for visual and / or video output, including but not limited to lamps (such as LED lamps), display screens, speakers, etc. In some embodiments, output device may be used to provide notification or alarm to system users, such as current system status, problem indication, required user intervention, appropriate time for performing maintenance operations, etc. In some embodiments, output device may also be used as input device such as via touch screen interface or another input mode. User input may include information related to target range of air volume and / or air velocity, dust collector model information, configuration information, information related to duct size, diameter or cross-sectional area, etc.

[0077] In various embodiments, the monitoring device 400 may include a memory 438 and / or a memory controller. The memory may include various types of memory components, including dynamic RAM (D-RAM), read-only memory (ROM), static RAM (S-RAM), disk storage, flash memory, EEPROM, battery-backed RAM such as S-RAM or D-RAM, and any other type of digital data storage component. In some embodiments, the electronic circuit or electronic component includes volatile memory. In some embodiments, the electronic circuit or electronic component includes non-volatile memory. In some embodiments, the electronic circuit or electronic component may include interconnected transistors to provide positive feedback that operates as a latch or flip-flop, thereby providing a circuit with two or more metastable states and remaining in one of these states until changed by an external input. The data storage device may be based on such a circuit including a flip-flop. The data storage device may also be based on the storage of charge in a capacitor or based on other principles. In some embodiments, the non-volatile memory 438 may be combined with the control circuit 404.

[0078] In various embodiments, monitoring device 400 may include clock circuit 440. In some embodiments, clock circuit 440 may be combined with control circuit 404. Figure 4 It is not shown, but it is understood that various embodiments herein may include a data / communication bus to provide data transmission between components. In some embodiments, an analog signal interface may be included. In some embodiments, a digital signal interface may be included.

[0079] In various embodiments, monitoring device 400 can include communication circuitry 442. In various embodiments, communication circuitry can include components such as antenna 444, amplifiers, filters, digital-to-analog and / or analog-to-digital converters, and the like.

[0080] In various embodiments, the monitoring device 400 herein can be designed such that: the monitoring device 400 can operate using only battery power and the battery will not be depleted for a long period of time, such as weeks, months, or even years. Therefore, in various embodiments, the operation of the monitoring device 400 can be optimized to save energy consumption.

[0081] In some embodiments, one or more pressure sensors generate signals continuously or substantially continuously. However, in some embodiments, one or more pressure sensors generate signals discontinuously. In some embodiments, one or more pressure sensors may generate signals at predetermined time intervals. In some embodiments, one or more pressure sensors may generate signals based on a duty cycle. In some embodiments, the control circuit may initiate a change in sensor operation, such as a change (temporary or otherwise) in the frequency at which sensor measurements are taken and / or a change in the bandwidth or resolution of the sensor data. In some embodiments, a temporary change in a data logging parameter includes increasing the bandwidth or resolution of the recorded data.

[0082] However, now refer to Figure 5 , shows the following graph: The graph shows the relative air flow 502 through the industrial dust collector over time. In this view, it can be seen that when the system is in use, the relative air flow 502 reaches a point 504 where the flow rate decreases. This decrease can be significant and indicate that system maintenance is required.

[0083] However, as discussed above, while measurements of relative air flow can be useful for certain purposes, measurements alone may be insufficient because the relative air flow may remain substantially constant over time while the air volume may still be at undesirable levels. Therefore, it is important to monitor the volume of air moving through the air filtration system to ensure proper system operation and safety. For example, referring now to Figure 6 , shows the following graph: The graph shows the relative air flow rate 602 of an industrial dust collector over time. In this view, it can be seen that the relative air flow rate oscillates between a higher level 604 when the system is in use and a lower level 606 (off level) when the system is not in use. In this example, the relative air flow rate at the higher level 604 is stable and substantially constant over time (e.g., the magnitude of the higher level 604 is substantially constant over time). However, only observing Figure 6 The data in the data cannot determine whether the air volume and / or air speed are at an appropriate level. The embodiments herein can be used to determine the air volume and / or air speed.

[0084] The pressure sensor used with the system herein can be positioned in the air filter system, adjacent to the air filter system or otherwise communicated with the air filter system fluid at various points, and the air filter system is such as an industrial dust collector. In various embodiments, the pressure sensor can be positioned at the point of air filter or filter system upstream (dirty side). Therefore, in various embodiments, the system herein can use a static pressure sensor, which can be positioned at the point of air filter or filter system upstream (dirty side). Although the size of the pipeline that can measure the air volume is not particularly limited, in some embodiments, the monitoring system is configured to measure the pressure in the pipeline of the industrial dust collector or the pressure in the pipeline with a diameter of 4 inches to 48 inches that is communicated with the industrial dust collector fluid.

[0085] Now refer to Figure 7 , a schematic diagram of various parts of an industrial dust collector with monitoring capabilities according to various embodiments herein is shown. In this view, an air flow duct 702 is shown to be in fluid communication with an air filter 706 (the air filter 706 can represent one or more air filter elements, cartridges, bags, etc. or air filtration systems). The air filter 706 separates the upstream or dirty side 704 from the downstream or clean side 708. According to embodiments herein, a pressure sensor 710, such as a static pressure sensor, can be positioned to be located in the upstream or dirty side 704, adjacent to the upstream or dirty side 704, or otherwise in fluid communication with the upstream or dirty side 704.

[0086] Now refer to Fig. 8A , shows a schematic diagram of the various parts of an industrial dust collector system 800 with a monitoring system according to various embodiments herein. In this example, the dust collector system 800 includes a plurality of industrial dust collector units (802, 804, 806). The dust collector system located in a factory or at a specific location may include any number of single units from one to ten or more. In this example, the main duct 810 delivers the air loaded with dust / particles to the branch 808. The monitoring system 816 can communicate with a pressure sensor 812 in a signal manner, and the pressure sensor 812 is positioned to be located in any or all branches in the main duct 810 or the branch 808, adjacent to any or all branches in the main duct 810 or the branch 808, or otherwise communicated with any or all branches in the main duct 810 or the branch 808 fluid. The air volume and / or air velocity in any part of the system including the pressure sensor 812, such as in any or all branches in the main duct 810 or the branch 808, can be tracked in real time.

[0087] Now refer to Figure 8B, a schematic diagram of various parts of an industrial dust collector system 860 with a monitoring system according to various embodiments herein is shown. In this example, the dust collector system 800 includes a single dust collector unit 802, but includes multiple workstations or equipment pieces (850, 852, 854) that generate dust / particles, such as a plasma cutter or another type of machine. In this example, a branch 808 delivers air laden with dust / particles from the equipment pieces (850, 852, 854) to a main duct 810, which then delivers the air laden with dust / particles to the dust collector unit 802. The monitoring system 816 can communicate with a pressure sensor 812 in a signal manner, and the pressure sensor 812 is positioned to be located in the main duct 810 or any or all branches in the branch 808 (or in this example, the input duct), adjacent to the main duct 810 or any or all branches in the branch 808 (or in this example, the input duct), or otherwise in fluid communication with the main duct 810 or any or all branches in the branch 808 (or in this example, the input duct). The air volume and / or air velocity can be tracked in real time in any part of the system including the pressure sensor 812, such as the main duct 810 or any or all branches in the branch 808. In this way, the air volume and / or velocity at the level of multiple individual workstations or equipment pieces can be monitored, even if there is only one dust collector.

[0088] Therefore, the monitoring system herein can track the air volume at one or more points of an industrial collector device or system, thereby allowing the air volume passing through the entire system or being located in any subunit of the system to be detected / measured. Therefore, in some embodiments, the static pressure sensor of the system can be configured to measure the pressure in the main duct portion of an industrial dust collector. In some embodiments, the static pressure sensor of the system can be configured to measure the pressure in the branch portion of the main duct of an industrial dust collector. In some embodiments, the monitoring system may include a plurality of static pressure sensors, wherein the plurality of static pressure sensors are configured to measure the pressure in the air duct associated with different industrial air collectors or the air duct of the same industrial air collector.

[0089] In some embodiments, such as in a retrofit solution, the monitoring system herein may be connected to a dust collector unit / system via one or more fluid conduits, such that the pressure sensor need not be mounted directly on or in the dust collector unit, but may be placed in fluid communication with the dust collector unit for pressure measurement or other sensing. Fig. 9 , Fig. 9is a schematic front perspective view of an air filtration system with a monitoring system according to various embodiments herein. Fig. 9 Overall similar to Figure 1 .However, Fig. 9 Also shown is a monitoring device 950, which can be connected to a first fluid conduit 952, a second fluid conduit 954, and a third fluid conduit 956. Fluid conduits can provide fluid communication between various parts of a filtration system (such as dirty side / upstream side, clean side / downstream side, compressed air supply device, etc.) and sensors / converters that can be located in or otherwise associated with the monitoring device 950. Therefore, in this embodiment, the sensor used may not be directly located in the position, but may be in fluid communication with the position so that the sensor used can measure the pressure in the position. In some embodiments, the first fluid conduit 952 can be connected to an existing fluid conduit 962 of an air filtration system, which provides fluid communication with a fluid flow region located upstream of one or more filter elements. In some embodiments, a coupling 966 (such as a T-shaped coupling, a splicing coupling, or other connecting structural members) can be used to connect the first fluid conduit 952 to an existing fluid conduit 962. The second fluid conduit 954 can be connected to an existing fluid conduit 964 of the air filtration system, which provides fluid communication with a fluid flow region located upstream of one or more filter elements. In some embodiments, a coupling 968 (such as a T-shaped coupling, a splicing coupling or other similar connecting structural members) can be used to connect the second fluid conduit 954 to the existing fluid conduit 964.

[0090] Now refer to Fig.10 , which shows a schematic diagram of various elements of a monitoring device 950 according to various embodiments herein. Fig.10 Including Figure 4 However, Fig.10 The embodiment shown in may also include: a first fluid conduit 952 (fluidically connected to the filtration system 100), the first fluid conduit 952 including an internal portion 1008 and an external portion 1010; and a second fluid conduit 954 (fluidically connected to the filtration system 100), the second fluid conduit 954 including an internal portion 1016 and an external portion 1020; and a third fluid conduit 956 (fluidically connected to the filtration system 100), the third fluid conduit 956 including an internal portion 1024 and an external portion 1026.

[0091] In some embodiments, the monitoring device 950 may also include an input interface 1002 and / or a user input device. The monitoring device 950 may also include a low-energy local wireless communication component 1004. In some embodiments, the low-energy local wireless communication component 1004 may include a Bluetooth component. In some embodiments, the system can communicate with various sensors and / or the following devices: the device has a sensor and exchanges or receives data from the sensor through the low-energy local wireless communication component 1004. In some embodiments, the monitoring device 950 may also include a wired I / O interface 1006 and one or more connection ports or plug receiving portions. In some embodiments, the system can communicate with various sensors and / or the following devices: the device has a sensor and exchanges or receives data from the sensor through the wired I / O interface 1006.

[0092] In some embodiments, in addition to including a pressure sensor or a differential pressure sensor, the monitoring device 950 may also include various other sensors. In some embodiments, the monitoring device 950 may also include a temperature sensor 1014. The temperature sensor 1014 may be in fluid communication with at least one of the first fluid conduit, the second fluid conduit, and the third fluid conduit.

[0093] In some embodiments, the monitoring device 950 may further include a sound sensor or a vibration sensor, such as a microphone. In some embodiments, the sound sensor may be in fluid communication with at least one of the first fluid conduit, the second fluid conduit, and the third fluid conduit. In some embodiments, the monitoring device 950 may further include a humidity sensor.

[0094] In some embodiments, the pressure sensor and the control circuit are co-located at the same location relative to the monitored industrial dust collector. However, in some embodiments, the pressure sensor and the control circuit are located away from each other.

[0095] Now refer to Fig.11 , a schematic diagram of a filtration monitoring system data communication environment 1100 according to various embodiments herein is shown. The communication environment 1100 may include an air filtration system 100, such as an industrial dust collector, a gas turbine filtration system, or another filtration system for various fluids including air. In some embodiments, the filtration system 100 may be located within a working environment 1102. The working environment 1102 may represent a geographic area in which the air filtration system operates. For example, the working environment 1102 may be a shipping or distribution center, a manufacturing facility or factory, a power plant, etc.

[0096] In some embodiments, wireless signals from the filtration system 100 can be exchanged with a wireless communication tower 1120 (or antenna array), which can be a cellular tower or other wireless communication tower. The wireless communication tower 1120 can be connected to a data network 1122, such as the Internet or another type of public or private data network, packet-switched or otherwise.

[0097] The data network can provide one-way or two-way communication with other components outside the working environment 1102. For example, the server 1124 or other processing device or cloud computing source can receive electronic signals containing data from one or more components, such as the filtration system 100. Therefore, in various embodiments, the monitoring system can be configured to transmit real-time data to a remote computing source. In various embodiments, the real-time data includes at least one selected from the following: real-time pressure data, real-time air volume values, and real-time air velocity values.

[0098] The server 1124 (real or virtual) can interface with a database 1126 (real or virtual) to store data. In some embodiments, the server 1124 (or a device as part of a server system) can interface with a user device 1128, which can allow a user to query the data stored in the database 1126 through a user interface. Specifically, the user interface can include a display of air volume and / or air velocity data. The server 1124 and / or the database 1126 can be located in different physical locations or can be located in the cloud.

[0099] Now refer to Fig.12 , shows a schematic diagram of a filtering system data communication environment 1100 according to various embodiments herein. In some embodiments, a gateway or repeater unit 1210 may be provided within the working environment 1102. In some embodiments, the gateway or repeater unit 1210 may communicate wirelessly with the filtering system 100 and / or one or more sensors that collect data that may be used by the filtering system. In some embodiments, the gateway or repeater unit 1210 may be connected to an external data network 1122, such as the Internet or various private networks. In some embodiments, the data network 1122 may be a packet-switched network. In some embodiments, the gateway or repeater 1210 may also include a data network router function.

[0100] It is understood that the monitoring system herein can work with many different types of filtration systems. Figures 1 to 3A cartridge-based air filtration system is shown, but it will be appreciated that a bag-type air filtration system may also be tested using the monitoring system described herein. Fig.13 , Fig.13 1 is a schematic front perspective view of an air filtration system 1300 with a filter system monitoring device 400 according to various embodiments herein. In this view, for ease of illustration, the connection with the filter system monitoring device 400 is not shown. In operation, the filter bag can be pulse-cleaned periodically to maintain or reduce the operating pressure drop, and the filter bag is often pulse-cleaned during operation. During the pulse cleaning operation, the air pulse is directed to pass through the filter bag in the opposite direction to the normal filtering operation. The effect of the air pulse has two important results. First, the pulse tends to bend the filter bag in response to the increased internal pressure. This outward bending motion tends to mechanically remove any particles accumulated in the form of filter cake on the outside of the bag. In addition, the increase in air flow through the filter bag surface in the opposite direction tends to remove particles through the action of air passing through the porous openings in the filter bag structure. The result of the action of air passing through the bag-shaped piece in the opposite direction during operation tends to reduce the amount of any particles or filter cakes formed on the outside of the filter bag-shaped piece, thereby restoring the filter bag-shaped piece to a pressure drop that is generally more commensurate with the effective operation of the structure. This pulse cleaning operation can be performed using various internal structures in a bag house. The bag house can include an internal fan that can guide the air flow to pass through the housing structure in the opposite direction. Alternatively, the housing can include an air orifice or nozzle that can be installed in a support structure or can be moved from a support structure to a support structure to introduce a reverse pulse air flow into the interior of the bag house. The monitoring device herein can be connected to such a filtration system so that an area of ​​the filtration system (such as a clean side or downstream side of a filter bag-shaped piece or a dirty side or upstream side of a filter bag-shaped piece) and a sensor in the monitoring device or a sensor fluid that is otherwise electrically communicated with the monitoring device is in communication. Other aspects of the bag air filtration system are described in U.S. Patent No. 6,740,412, the contents of which are incorporated herein by reference.

[0101] System calculations and volume / speed calculations

[0102] In various embodiments, the monitoring system can be configured to use real-time static pressure measurements and data representing the initial measurement of air volume and the static pressure during the initial measurement of air volume to measure the value of real-time air volume and / or the value of air velocity. For example, when an industrial dust collector or air filtration system is initially installed, the air volume can be measured manually, such as by a pitot tube, a wing anemometer or a hot wire anemometer, or another flow or speed measurement device or technology to measure the air volume and simultaneously measure the static pressure. Alternatively, during configuration or calibration, the air volume can be measured manually and the static pressure can be measured simultaneously.

[0103] It will be appreciated that if static pressure is tracked in another manner and can be correlated via a timestamp to the time at which the air volume measurement was manually taken, then a simultaneous manual measurement of static pressure need not be performed.

[0104] Equation 1 below shows the relationship between pressure measurements (real-time measurements and initial / manual / calibration measurements), the air volume measured during the initial / manual / calibration measurements, and the real-time air volume, and Equation 1 can be used by the system herein to calculate air volume and / or air velocity.

[0105]

[0106] in:

[0107] Q Act : Real-time air volume.

[0108] Q Meas : Air volume at initial / manual / calibration event.

[0109] pressure Act : To pressure Meas Real-time static pressure at the same location where the measurement was taken.

[0110] pressure Meas : Static pressure at the time of the initial / manual / calibration measurement, usually on the dirty or upstream side of the air filter of the system.

[0111] Therefore, the monitoring system herein can calculate the real-time air volume and / or air velocity value by multiplying the previously measured air volume and / or air velocity value with the square of the quotient of the current pressure value divided by the pressure value measured when the air volume and / or air velocity was previously measured. Alternatively, the monitoring system herein can calculate the real-time air volume and / or air velocity value by multiplying the previously measured air volume and / or air velocity value with the square of the quotient of the current relative airflow value divided by the relative airflow value measured when the air volume and / or air velocity was previously measured, wherein the relative airflow value is obtained using data from the pressure sensor.

[0112] As mentioned above, it is understood that the value of air velocity can be converted to the value of air volume by multiplying the air velocity by the cross-sectional area of ​​the air duct or other passage. Conversely, the value of air volume can be converted to the value of air velocity by dividing the air volume by the cross-sectional area of ​​the air duct or other passage.

[0113] In various embodiments, if a predetermined alarm condition is met, the control circuit can start an alarm and / or issue an alarm. The alarm condition can include detecting a specific operating state or event of the filtration system. In some embodiments, the alarm condition can include detecting that the real-time air volume and / or the real-time air speed exceed a threshold value and / or fall outside the target range. In some embodiments, the monitoring system can be configured to receive input related to the target range from a system user. In some embodiments, the monitoring system can be configured to: if the value of the real-time air volume and / or the value of the real-time air speed is outside the target range, an alarm is issued without considering the relative airflow value (for example, without considering whether the relative airflow value remains substantially constant). The specific target range set is not particularly limited. However, the air filtration system monitored herein can generally be designed to have an air volume within the following range: 500cfm, 2,000cfm, 5,000cfm, 10,000cfm, 20,000cfm, 30,000cfm or 50,000cfm or more, or an amount within the range between any ranges in the above ranges.

[0114] In some embodiments, multiple levels of alarm or warning thresholds may be set. For example, when the real-time air volume or air speed measurement exceeds (e.g., falls below) a first threshold, an informational or less urgent alarm or warning may be triggered, wherein when the real-time air volume or air speed measurement exceeds a second threshold, an urgent alarm or warning may be triggered.

[0115] In various embodiments, the control circuitry may calculate the time to service the system and / or replace the filter element and / or generate a signal related to the time to replace the filter. In various embodiments, the control circuitry may calculate the time to service the system and / or its filter element and issue a notification related to the time to replace via a user output device. In various embodiments, the control circuitry may calculate the time to service the system and / or its filter element based on the calculated real-time values ​​of air volume and / or air velocity.

[0116] In addition to the above operations, the monitoring system herein (including the control circuitry of the monitoring system and / or other circuitry or components with processing capabilities) can be configured to perform various operations, including various operations on data from sensors, but not limited to: averaging, time averaging, statistical analysis, normalization, aggregation, sorting, deletion, traversal, conversion, simplification (such as eliminating selected data and / or converting data to a smaller granularity form), compression (such as using a compression algorithm), merging, insertion, time stamping, filtering, shaving outliers, calculating trends and trend lines (linear, logarithmic, polynomial, power, exponential, moving average, etc.), predicting EOL (end of life) of filter system components (valves, timing boards, filter elements, etc.), determining EOL status, predicting performance, predicting costs associated with replacing filter system components and not replacing components, normalizing data / signals, performing peak detection and / or peak fitting algorithms, etc. Fourier analysis can decompose physical signals into multiple discrete frequencies or a spectrum within a continuous range. In various embodiments herein, the operation on the signal / data can include a fast Fourier transform (FFT) to convert the data / signal from the time domain to the frequency domain. Other operations on the signal / data may include spectral estimation, frequency domain analysis, root mean square acceleration value (G RMS ), calculation of acceleration spectral density, power spectral density, Fourier series, Z transform, resonant frequency determination, harmonic frequency determination, etc. It should be understood that although the various operations described herein (such as fast Fourier transform) can be performed by a general-purpose microprocessor, these operations can also be more efficiently performed by a digital signal processor (DSP), which in some embodiments can be combined with the control circuit or can exist as a separate discrete component.

[0117] method

[0118] Many different methods are contemplated herein, including but not limited to methods of monitoring filtration systems or industrial dust collectors, methods of detecting malfunctioning systems, methods of determining whether these systems require repair or maintenance, etc. Aspects of the operation of the systems / devices described elsewhere herein may be performed as operations of one or more methods according to various embodiments herein.

[0119] In various embodiments, the operations and / or method steps described herein may be performed as part of a computer-implemented method executed by one or more processors of one or more computing devices. In various embodiments, the operations and method steps described herein may be implemented as instructions stored on a non-transitory computer-readable medium that, when executed by one or more processors, causes the system to perform the operations and / or steps.

[0120] In an embodiment, a method for monitoring an industrial dust collector is included. The method may include: storing previously measured values ​​of air volume and / or air velocity; measuring a real-time pressure value in an area in fluid communication with the industrial air collector; and calculating a real-time air volume value and / or a real-time air velocity value using the real-time pressure value and the previously measured values ​​of air volume and / or air velocity.

[0121] In an embodiment, the method may further include measuring a real-time pressure value in a main duct portion of an industrial dust collector. In an embodiment, the method may further include measuring a real-time pressure value in a branch portion or other portion of a main duct of an industrial dust collector.

[0122] In an embodiment, the method may further include measuring a real-time pressure value in a duct upstream of an air filter of an industrial dust collector. In an embodiment, the method may further include measuring a real-time pressure value in a duct having a diameter of 4 inches to 48 inches of an industrial dust collector or in fluid communication with an industrial dust collector.

[0123] In embodiments of the method, the pressure sensor is mounted on, mounted in, and / or mounted in fluid communication with the industrial dust collector.

[0124] In embodiments, the method may further comprise measuring pressure within air ducts associated with different industrial air collectors.

[0125] In an embodiment, the method may further include: if the real-time air volume value and / or the real-time air speed value is outside the target range, then issuing an alarm. In an embodiment, the method may further include receiving input related to the target range from a system user. In an embodiment, the method may further include: if the real-time air volume value and / or the real-time air speed value is outside the target range, then issuing an alarm, regardless of the relative airflow value.

[0126] In an embodiment, the method herein may further include transmitting the real-time data to a remote computing source. In an embodiment, the real-time data may include at least one selected from the following: a real-time pressure value, a real-time air volume value, and a real-time air velocity value.

[0127] Various aspects have been described with reference to various specific and preferred embodiments and techniques. However, it should be understood that many variations and modifications may be made while remaining within the spirit and scope herein. Therefore, the embodiments described herein are not intended to be exhaustive or to limit the invention to the precise forms disclosed in the above detailed description. Instead, the embodiments are selected and described so that those skilled in the art can appreciate and understand the principles and practices.

[0128] It should be noted that, as used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural forms unless the content clearly dictates otherwise. It should also be noted that the term "or" is generally used in its sense including "and / or" unless the content clearly dictates otherwise.

[0129] It should also be noted that, as used in this specification and the appended claims, the term "configuration" describes a system, device, or other structure that is constructed or configured to perform a specific task or adopt a specific configuration. The term "configuration" may be used interchangeably with other similar terms, such as arrange and construct, construct and arrange, construct, manufacture and arrange, etc.

[0130] All publications and patent applications in this application document are indicative of the level of ordinary technicians in the field to which the invention belongs. All publications and patent applications are incorporated herein by reference to the same extent as if each individual publication or patent application was specifically and individually described by reference.

Claims

1. A monitoring system for an industrial dust collector, the monitoring system comprising: Pressure sensor; as well as a control circuit, wherein the control circuit communicates with the pressure sensor in the form of signals; wherein the monitoring system stores previously measured values ​​of air volume and / or previously measured values ​​of air velocity; and The monitoring system calculates the real-time air volume value and / or the real-time air velocity value using the previously measured air volume value and / or the previously measured air velocity value and the data from the pressure sensor.

2. The monitoring system according to any one of claims 1 and 3 to 19, wherein: The monitoring system calculates the real-time air volume value and / or the real-time air speed value by multiplying the previously measured air volume value and / or the previously measured air speed value by the square of the following quotient: the quotient is the current relative airflow value divided by the relative airflow value measured when the air volume and / or the previously measured air speed were measured, wherein the relative airflow value is obtained using data from the pressure sensor.

3. A monitoring system according to any one of claims 1 to 2 and claims 4 to 19, wherein: The monitoring system calculates the real-time air volume value and / or the real-time air speed value by multiplying the previously measured air volume value and / or the previously measured air speed value by the square of the following quotient: the quotient is the current pressure value divided by the pressure value measured when the air volume and / or the previously measured air speed were measured.

4. A monitoring system according to any one of claims 1 to 3 and claims 5 to 19, the pressure sensor comprising a static pressure sensor.

5. A monitoring system according to any one of claims 1 to 4 and claims 6 to 19, wherein: The static pressure sensor is configured to measure pressure within a main duct section of the industrial dust collector.

6. A monitoring system according to any one of claims 1 to 5 and claims 7 to 19, wherein: The static pressure sensor is configured to measure the pressure within a branch of a main duct of the industrial dust collector.

7. A monitoring system according to any one of claims 1 to 6 and claims 8 to 19, wherein: The static pressure sensor is configured to measure pressure within a duct of the industrial dust collector upstream of an air filter.

8. A monitoring system according to any one of claims 1 to 7 and claims 9 to 19, wherein: The static pressure sensor is configured to measure pressure within a duct of the industrial dust collector or a 4 inch to 48 inch diameter duct in fluid communication with the industrial dust collector.

9. A monitoring system according to any one of claims 1 to 8 and claims 10 to 19, wherein: The pressure sensor is configured to be mounted on, mounted in, and / or mounted in fluid communication with an industrial dust collector.

10. The monitoring system according to any one of claims 1 to 9 and claims 11 to 19, wherein: The pressure sensor includes a plurality of static pressure sensors, wherein the plurality of static pressure sensors are configured to measure pressure within air ducts associated with different industrial air collectors.

11. A monitoring system according to any one of claims 1 to 10 and claims 12 to 19, wherein: The monitoring system is configured to issue an alarm when the real-time air volume value and / or the real-time air speed value is outside a target range.

12. A monitoring system according to any one of claims 1 to 11 and claims 13 to 19, wherein: The monitoring system is configured to receive input from a system user regarding the target range.

13. A monitoring system according to any one of claims 1 to 12 and claims 14 to 19, wherein: The monitoring system is configured to generate an alarm if the real-time air volume value and / or the real-time air velocity value is outside a target range without considering the relative airflow value.

14. A monitoring system according to any one of claims 1 to 13 and claims 15 to 19, wherein: The previously measured air volume and / or the previously measured air velocity are input into the system based on manually taken measurements.

15. A monitoring system according to any one of claims 1 to 14 and claims 16 to 19, wherein: The previously measured air volume and / or the previously measured air velocity are input into the system based on measurements taken using at least one of a pitot tube, a vane anemometer, or a hot wire anemometer.

16. A monitoring system according to any one of claims 1 to 15 and claims 17 to 19, wherein: The monitoring system is configured to transmit real-time data to a remote computing source.

17. A monitoring system according to any one of claims 1 to 16 and claims 18 to 19, wherein: The real-time data includes at least one selected from the following: real-time pressure data, real-time air volume value, and real-time air speed value.

18. A monitoring system according to any one of claims 1 to 17 and claim 19, wherein: The real-time air volume value is in the range of 500 cfm to 50,000 cfm.

19. A monitoring system according to any one of claims 1 to 18, wherein: The pressure sensor and the control circuit are co-located relative to the industrial dust collector being monitored.

20. A method for monitoring an industrial dust collector, the method comprising: storing previously measured values ​​of the air volume and / or previously measured values ​​of the air velocity; Measuring a real-time pressure value in an area in fluid communication with the industrial air collector; as well as The real-time air volume value and / or the real-time air velocity value are calculated using the real-time pressure value and the previously measured air volume value and / or the previously measured air velocity value.

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