A control method of an air treatment device

Abstract

The application relates to the air conditioning technical field and discloses a control method of an air treatment equipment. The filter screen device of the air treatment equipment comprises a filter screen body used for air filtration, and an ultrasonic generator connected to the filter screen body in contact mode to transmit vibration energy of the ultrasonic generator to the filter screen body. Dust attached to the filter screen body is vibrated and cleaned by high-frequency vibration of the ultrasonic generator, almost no dust is left on the filter screen body, the cleaning is complete, the cleaning efficiency is high, noise during operation of the ultrasonic generator is small, energy consumption is low, and the self-cleaning filter screen device can effectively improve the use experience of users. The vibration intensity and vibration frequency of the ultrasonic generator are controlled according to the environmental temperature and / or humidity, so that the cleaning effect is ensured.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more specifically to a control method for air handling equipment. Background Technology

[0002] Air conditioners and air purifiers, as air handling equipment, are widely used in homes, hospitals, offices, and other places. However, the filters of existing air handling equipment are easily contaminated by dust and particulate matter during use, leading to decreased air handling efficiency and even affecting air quality. Filter cleaning mostly relies on manual disassembly and washing or regular replacement, which is cumbersome and costly. Some related technologies use reverse airflow cleaning methods, but these suffer from incomplete cleaning, high noise levels, and high energy consumption. Summary of the Invention

[0003] In view of this, the present invention provides a control method for an air handling device to solve the problems of incomplete cleaning, high noise, and high energy consumption associated with reverse airflow for cleaning filters.

[0004] In a first aspect, the present invention provides a control method for an air handling device, the air handling device comprising:

[0005] Controllers and sensing components;

[0006] A filter device includes a filter body and an ultrasonic generator that is in contact with the filter body; the ultrasonic generator and the sensing component are respectively connected to a controller, which is adapted to receive monitoring signals from the sensing component to control the switching and operating status of the ultrasonic generator.

[0007] The control method includes:

[0008] Acquire the monitoring data of the sensing component;

[0009] When the monitoring data meets the filter cleaning conditions, the ultrasonic generator (2) is activated to vibrate and clean the filter body.

[0010] Obtain ambient temperature and / or ambient humidity;

[0011] When the ambient temperature is greater than the temperature threshold or the ambient humidity is greater than the humidity threshold, the vibration intensity and / or vibration frequency of the ultrasonic generator are controlled and adjusted, and the ultrasonic generator continues to run until the pressure difference across the filter body is less than or equal to the pressure threshold, at which point the ultrasonic generator is turned off.

[0012] Beneficial Effects: Utilizing the high-frequency vibration of an ultrasonic generator to clean impurities adhering to the filter body, virtually eliminating dust and other residues on the filter body, resulting in more thorough and efficient cleaning. Furthermore, the ultrasonic generator operates with low noise and low energy consumption. Incorporating this self-cleaning filter device into air handling equipment significantly enhances the user experience. In high-temperature environments (e.g., T>30℃), increasing the vibration intensity maintains effective vibration energy on the filter surface, preventing cleaning failure. At high temperatures, increased material energy absorption and transmission path losses amplify, enhancing impurity adhesion and weakening the medium's auxiliary effect, leading to a significant attenuation of effective vibration energy on the filter body surface. Therefore, increasing the vibration intensity is necessary to offset energy losses at multiple stages, ensuring sufficient energy to ultimately remove impurities and maintain cleaning effectiveness. In high-humidity environments (e.g., relative humidity H>60%), lowering the frequency avoids water molecule resonance absorption, significantly improving sound wave penetration and cleaning efficiency.

[0013] As an optional implementation, the control adjustment of the vibration intensity or vibration frequency of the ultrasonic generator includes:

[0014] Based on the relation A=A base +k1·(T-30) adjusts the vibration intensity of the ultrasonic generator, where A is the target vibration intensity of the ultrasonic generator. base The basic vibration intensity of the ultrasonic generator is given by k1, which is the vibration intensity adjustment coefficient, and T is the real-time monitored ambient temperature.

[0015] Based on the relation f=f base -k2·(H-60) adjusts the vibration frequency of the ultrasonic generator, where f is the target vibration frequency of the ultrasonic generator. base K is the fundamental vibration frequency of the ultrasonic generator, k2 is the vibration frequency adjustment coefficient, and H is the ambient humidity monitored in real time.

[0016] Beneficial effects: Based on the fundamental vibration intensity and frequency of the ultrasonic generator, and real-time monitoring of ambient temperature and humidity, the vibration intensity of the ultrasonic generator is adjusted using the above-mentioned relationship, making the adjustment more precise. By precisely coupling environmental variables with energy output, the limitations of ultrasonic generators operating with fixed parameters are overcome, improving cleaning stability, optimizing energy consumption control, and enhancing system adaptability. This upgrade from passive adjustment to active optimization allows the filter cleaning device to adapt to more complex application requirements.

[0017] As an optional implementation, after controlling the start of the ultrasonic generator, the following further steps are included:

[0018] The feedback information from the sensing components is obtained to determine the dirt level of the filter body;

[0019] According to the level of dirt, the vibration intensity, vibration frequency and cleaning time of the ultrasonic generator (2) are controlled and adjusted according to a preset algorithm.

[0020] Beneficial effects: The vibration intensity, vibration frequency, and cleaning time of the ultrasonic generator are matched and adjusted according to the different levels of dirt on the filter body. The targeted cleaning method avoids over-cleaning, which increases energy consumption, or incomplete cleaning, thus improving energy efficiency.

[0021] As an optional implementation, the level of dirtiness is represented by Level, where Level∈{1,2,3}; the preset algorithm includes:

[0022] A=A base +x1·Level+x2·(C VOCs / C VOCs,threshold ), where A is the target vibration intensity of the ultrasonic generator, A base The basic vibration intensity of the ultrasonic generator is given by C, where x1 and x2 are vibration intensity adjustment coefficients, respectively. VOCs To monitor VOCs concentration in real time, C VOCs,threshold VOCs concentration threshold;

[0023] f=f base +x3·Level+x4·(C PM2.5 / C PM2.5,threshold ), where f is the target vibration frequency of the ultrasonic generator, f base The fundamental vibration frequency of the ultrasonic generator is given by C, where x3 and x4 are vibration frequency adjustment coefficients. PM2.5 To monitor PM2.5 concentration in real time, C PM2.5,threshold The PM2.5 concentration threshold;

[0024] t=t base +m·Level, where t is the target cleaning time, t base The base cleaning time is denoted by m, where m is the pollution level coefficient.

[0025] Beneficial effects: The ultrasonic generator's vibration intensity, frequency, and cleaning time can be adaptively adjusted according to the environment (air quality, ambient temperature and humidity) and the level of dirt on the filter body. This precise matching achieves effective cleaning while saving energy and improving the user experience.

[0026] As an optional implementation, the step of the monitoring data meeting the filter cleaning conditions includes:

[0027] The pressure difference across the filter body is greater than the pressure threshold; and / or

[0028] The light transmittance of the filter body is lower than the preset light transmittance value.

[0029] Beneficial effects: The pressure threshold corresponds to the degree of dirtiness of the filter body when cleaning is required. When the pressure difference across the filter body exceeds the pressure threshold, and / or the light transmittance of the filter body is lower than the preset transmittance value, it indicates that filter cleaning needs to be initiated. Using pressure difference to determine the cleanliness of the filter body provides rapid judgment and feedback, allowing for quick control. Using light transmittance to characterize the cleanliness of the filter body offers a direct assessment.

[0030] As an optional implementation, the filter body includes:

[0031] A cylindrical filter screen, wherein the ultrasonic generator is disposed on the inner side of the cylindrical filter screen.

[0032] Beneficial effects: Cylindrical filters offer a larger filtration area within the same space compared to traditional sheet filters or filter bags, improving filtration efficiency. Due to the large filtration area, fluid flows through the filter at a relatively slower speed when processing the same flow rate, resulting in less pressure loss and maintaining a low and stable pressure differential. This ensures good fluid flow during filtration, reducing the impact on the overall system pressure and promoting stable system operation. Cylindrical filters are typically compact, small in size, and lightweight, eliminating the need for complex installation structures such as additional cages. Replacement is also convenient. Furthermore, cylindrical filters are better suited for use with ultrasonic generators, effectively removing impurities accumulated on the filter. When the ultrasonic generator is placed inside the cylindrical filter, its vibration energy can directly act on the inner surface of the filter (the side in contact with the filtered clean medium) without passing through the outer medium to be filtered (which may contain a large amount of impurities, have high viscosity, or be corrosive). This results in less energy loss and more concentrated vibration intensity. Even if stubborn impurities (such as viscous substances or fine particle scale) adhere to the outer side of the filter, the high-frequency vibration on the inner side can be efficiently transmitted to the outer side through the filter body, quickly removing impurities and significantly improving the anti-clogging and cleaning effects. When the ultrasonic generator is placed inside the cylindrical filter, it can continuously vibrate the inner surface at high frequency, preventing the small amount of tiny impurities that pass through the filter from adhering to and accumulating on the inner side, ensuring that the inner side of the filter remains clean at all times, avoiding secondary pollution from the source, and ensuring stable filtration accuracy. If the ultrasonic generator is installed on the outer side of the cylindrical filter, its vibration may directly interfere with the flow field of the medium to be filtered on the outer side (such as disrupting the flow velocity distribution and causing unfiltered impurities to diffuse excessively on the outer side), thereby affecting the filtration efficiency (such as uneven flow velocity leading to excessively rapid accumulation of impurities in certain areas). By using the inner-side installation method, the vibration of the ultrasonic generator mainly acts on the filter body and the clean medium inside (which has been filtered and has extremely low impurity content), with less interference to the flow field of the main fluid to be filtered outside the filter. This can keep the medium passing through the filter body smoothly, reduce local pressure fluctuations or filtration efficiency reduction caused by flow field turbulence, and ensure the stable operation of the entire filtration system.

[0033] As an optional implementation, the ultrasonic generator includes:

[0034] The annular oscillating sections are distributed at intervals along the axial direction of the cylindrical filter screen.

[0035] Beneficial Effects: The ultrasonic generator, by setting multiple annular oscillating sections spaced apart along the axial direction of the cylindrical filter, forms a three-dimensional vibration field, eliminating dead zones in filter cleaning and preventing vibration blind spots. Each annular oscillating section can cover one circumference of the cylindrical filter. The vibration energy of multiple annular sections is superimposed along the axial direction, forming a 360-degree three-dimensional vibration field without dead zones inside the filter. This not only ensures uniform vibration in the circumferential direction of the cylindrical filter, but also allows the vibration energy to fully act on different positions along the axial direction of the cylindrical filter, ensuring consistent vibration at the top, middle, and bottom. This three-dimensional vibration field can specifically address the issue of easy deposition at both ends of the cylindrical filter. The superimposed vibration of the annular oscillating sections allows viscous impurities at both ends of the filter to be peeled off simultaneously, avoiding hidden blockages caused by localized accumulation (i.e., the surface appears clean, but the ends are actually partially blocked, affecting the overall flow rate). In actual use, due to the influence of fluid inlet direction, gravity, and flow velocity distribution, filter contamination is often not uniform. The amount of impurities attached to different areas inside the filter varies greatly. For example, the bottom may have more particles deposited due to gravity, while the area near the inlet may have a higher flow velocity and more concentrated impurity impact. Multiple independently controllable annular oscillators, with adjustable power and frequency for each, can be tailored to the specific contamination levels in different areas of the filter. This zoned controllability allows for power enhancement of the bottom annular oscillator when there are more impurities in the bottom annular region of the cylindrical filter, while maintaining low power operation in the top region. This precisely cleans heavily contaminated areas while avoiding energy waste and excessive filter fatigue caused by high-power vibration across the entire area, achieving intelligent adaptive energy-saving effects. When multiple annular oscillators are working, the ultrasonic vibration waves from adjacent annular sections interfere on the filter surface. At the overlapping wave crests, the local vibration intensity is significantly enhanced, generating a more intense cavitation effect. Meanwhile, the micro-flow fields formed by the vibrations in the wave troughs mutually propel each other, creating annular micro-jets along the filter surface. These interference-generated micro-jets actively flush away the tiny pores on the filter surface. For the common problem of pore clogging in cylindrical filters, the micro-jets can cut into the pores along the annular direction, removing trapped fine impurities rather than simply stripping surface impurities, significantly improving the filter's cleaning effect. The inner surface of a cylindrical filter screen is curved. When a single rigid oscillating section or a non-annular design is used, the contact area with the filter screen is limited, easily leading to stress concentration at the contact point. Long-term use may cause cracks or pore deformation in the filter screen. In contrast, the curvature of the annular oscillating section matches the inner surface of the filter screen. With multiple annular sections distributed axially, vibrational energy is transferred to the cylindrical filter screen through the entire annular contact surface, resulting in more uniform stress distribution. This flexible vibration through surface contact avoids damage to the filter screen due to excessive localized vibration, while allowing vibrational energy to be more efficiently converted into the filter screen's own vibration (rather than wasted in rigid collisions). When the clean medium flows inside the filter screen, the vibration of multiple annular oscillating sections causes the inner fluid to form an axially spiral rotating flow. This is because each annular vibration generates radial thrust, which, when superimposed, forms a spiral trajectory.This spiral flow significantly enhances the self-cleaning ability of the inner cleaning medium. Impurities stripped by ultrasonic waves move rapidly towards the outlets at both ends of the filter screen with the spiral flow, preventing impurities from suspending inside the filter screen and re-attaching, reducing the circulation and pollution of impurities within the system, and indirectly improving the overall filtration efficiency.

[0036] As an optional implementation, the filter device further includes:

[0037] A filter frame, wherein the filter body is mounted on the filter frame, and the ultrasonic generator is embedded within the filter frame.

[0038] Beneficial Effects: The ultrasonic generator is embedded within the filter frame, preventing vibration attenuation zones at the connection edges between the filter body and the frame that could lead to impurity buildup. When the ultrasonic generator is embedded in the filter frame, the frame itself becomes the vibration conductor, evenly transmitting vibration energy to the entire filter, including the edges, thoroughly eliminating blind spots for edge cleaning. This avoids secondary contamination caused by edge buildup. Since filters typically use flexible filter media, resonance can easily occur if the ultrasonic vibration frequency is close to its natural frequency, potentially leading to filter tearing or pore deformation under high-frequency conditions. However, the filter frame, as a rigid structure, has a natural frequency much higher than the filter body. Therefore, when the ultrasonic generator is embedded in the filter frame, the frame constrains the vibration frequency of the filter body. The ultrasonic generator's vibration is first filtered out by the frame, removing potential resonance-inducing frequencies before being transmitted to the filter body, ensuring the filter body remains in a stable, non-resonant vibration state and extending its lifespan. Furthermore, the filter frame provides a physical barrier for the ultrasonic generator, preventing it from directly contacting the filtered medium. This makes it less susceptible to failure due to corrosion, impact, or high-temperature aging, and allows it to withstand harsher environments. During installation, misalignment between the ultrasonic generator and the filter can lead to uneven vibration; loose assembly of the frame and filter can weaken vibration transmission efficiency. To avoid affecting filtration and cleaning performance, repeated adjustments by professionals are necessary. However, with the filter body, filter frame, and ultrasonic generator integrated, no separate adjustments to component alignment are required, allowing even non-professionals to quickly complete installation or replacement. The vibration of the filter frame creates flow field disturbances, enhancing impurity removal efficiency. The vibration of the frame, with its embedded ultrasonic generator, simultaneously creates a turbulent flow field in the surrounding fluid. The high-frequency vibration of the filter frame generates micro-vortices on both the filtered and clean sides of the filter body. These vortices carry away the detached impurities and move them quickly towards the discharge port, preventing impurity retention.

[0039] As an optional implementation, the sensing component includes:

[0040] The first sensor group is located at the filter body and is suitable for monitoring the dirt status of the filter body;

[0041] The second sensor group is located at the air outlet of the air handling equipment and is suitable for monitoring air quality.

[0042] Beneficial effects: The first sensor group monitors the dirt status of the filter body, which serves as the basis for determining whether the filter body needs to be cleaned; the second sensor group monitors air quality, which serves as the basis for adjusting the operating parameters of the ultrasonic generator, thereby precisely controlling the self-cleaning process of the filter device and improving control accuracy.

[0043] As an optional implementation, the first sensing group includes:

[0044] A photoelectric sensor is used to monitor the light transmittance of the filter body; and / or

[0045] A pressure sensor is used to monitor the pressure difference across the filter body.

[0046] Beneficial effects: Light transmittance detection can directly reflect the cleanliness of every part of the filter body through the penetrability of light. Even if there are small impurities in a local area, they can be accurately identified. Monitoring light transmittance can accurately locate the location and degree of blockage, avoiding filtration failure caused by local blockage. The cleanliness of the filter body is reflected by the pressure difference on both sides of the filter body. The feedback is fast and can be deeply correlated with dynamic response and system energy consumption. It has become a core indicator with multiple functions such as real-time monitoring, risk warning, and energy-saving optimization. It is especially reliable in extreme working conditions and complex systems.

[0047] As an optional implementation, the second sensing group includes:

[0048] Pollutant monitoring sensors are used to monitor the concentration of pollutants in the air;

[0049] Humidity sensor, used to monitor ambient humidity;

[0050] Temperature sensor used to monitor ambient temperature.

[0051] Beneficial effects: Ambient temperature and humidity significantly affect cleaning efficiency. By monitoring temperature and humidity in real time, cleaning parameters can be dynamically adjusted. For example, in hot and humid summer weather, the ultrasonic cleaning time is automatically shortened, avoiding over-cleaning or under-cleaning due to fixed parameters. Combined with monitoring of ambient temperature and humidity, vibration cleaning is upgraded from simply removing impurities to full-chain pollution control. This is especially beneficial during allergy seasons, reducing allergen rebound after cleaning and making it more suitable for asthma and rhinitis sufferers. Furthermore, through precise matching of environment, pollutants, and cleaning parameters, the air purifier can maintain efficient filter filtration in complex environments (such as kitchens, bathrooms, and pet rooms) while preventing the filter from becoming a source of pollution due to incomplete cleaning.

[0052] As an optional implementation, the air handling equipment further includes:

[0053] A dust collection device is located below the filter device to collect dust that is shaken off the filter body.

[0054] Beneficial effects: The dust collection device promptly collects dust and other impurities that fall from the filter body during ultrasonic cleaning, preventing secondary pollution.

[0055] As an optional implementation, the filter body is detachably installed in the air handling equipment.

[0056] Beneficial effects: The detachable installation method of the filter body allows the filter to be removed from the air handling unit for separate removal. When connected to an electric ultrasonic cleaner, it can also be used with ultrasonic cleaning fluid for better cleaning results. Attached Figure Description

[0057] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of the present invention, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0058] Figure 1 This is a top view of a filter device according to an embodiment of the present invention;

[0059] Figure 2 This is a schematic diagram of the connection structure between the filter body and the ultrasonic generator of a filter device according to an embodiment of the present invention;

[0060] Figure 3 This is a schematic diagram of the structure of an air handling device according to an embodiment of the present invention;

[0061] Figure 4 This is a schematic diagram of the control flow of a control method for an air handling device according to an embodiment of the present invention;

[0062] Figure 5 This is a schematic diagram of the working principle of the control device of the air handling equipment according to an embodiment of the present invention;

[0063] Figure 6 This is a schematic diagram illustrating the working principle of the data acquisition module of the air handling equipment according to an embodiment of the present invention.

[0064] Figure 7 This is a schematic diagram of the working principle of the processing and judgment module of the air handling equipment according to an embodiment of the present invention;

[0065] Figure 8 This is a schematic diagram of the working principle of the control execution module of the air handling equipment according to an embodiment of the present invention;

[0066] Figure 9 This is a schematic diagram illustrating the working principle of the feedback recording module of another air handling device according to an embodiment of the present invention.

[0067] Explanation of reference numerals in the attached figures:

[0068] 1. Filter body; 11. Outer layer; 12. Middle layer; 13. Inner layer;

[0069] 2. Ultrasonic generator; 21. Circular oscillating section;

[0070] 3. Filter frame;

[0071] 4. Controller;

[0072] 51. Second sensor group; 52. First sensor group;

[0073] 6. Dust collection device;

[0074] 7. Dust sensor. Detailed Implementation

[0075] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0076] In the description of the invention, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0077] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0078] In view of this, the present invention is proposed.

[0079] The following is combined with Figures 1 to 9 The following describes embodiments of the present invention.

[0080] According to embodiments of the present invention, in one aspect, such as Figure 1 and Figure 2 As shown, a filter device is provided, comprising:

[0081] Filter body 1, used for air filtration;

[0082] An ultrasonic generator 2 is connected to the filter body 1 in contact to transmit the vibration energy of the ultrasonic generator 2 to the filter body 1.

[0083] The high-frequency vibration of the ultrasonic generator 2 is used to clean the impurities attached to the filter body 1. Almost no dust or other residue remains on the filter body 1, resulting in more thorough cleaning and high cleaning efficiency. Moreover, the ultrasonic generator 2 operates with low noise and low energy consumption. The installation of this self-cleaning filter device in air handling equipment can effectively improve the user experience.

[0084] In some embodiments, the filter body 1 includes:

[0085] A cylindrical filter screen, with an ultrasonic generator 2 located inside the cylindrical filter screen.

[0086] Cylindrical filters offer a larger filtration area within the same space compared to traditional sheet filters or filter bags, improving filtration efficiency. Due to their large filtration area, fluid flows through the filter at a relatively slower speed when processing the same flow rate, resulting in less pressure loss and maintaining a low and stable pressure differential. This ensures good fluid flow during filtration, reducing the impact on overall system pressure and promoting stable system operation. Cylindrical filters are typically compact, small in size, and lightweight, requiring no additional cages or complex installation structures, and are easy to replace. Furthermore, cylindrical filters are better suited for use with ultrasonic generators, effectively removing impurities accumulated on the filter. When the ultrasonic generator 2 is placed inside the cylindrical filter, its vibration energy can directly act on the inner surface of the filter (the side in contact with the filtered clean medium) without passing through the outer medium to be filtered (which may contain a large amount of impurities, have high viscosity, or be corrosive). This results in less energy loss and more concentrated vibration intensity. Even if stubborn impurities (such as viscous substances or fine particle scale) adhere to the outer side of the filter, the high-frequency vibration on the inner side can be efficiently transmitted to the outer side through the filter body 1, quickly removing impurities and achieving more significant anti-clogging and cleaning effects. When the ultrasonic generator 2 is placed inside the cylindrical filter, it can continuously vibrate the inner surface at high frequency, preventing a small amount of tiny impurities that pass through the filter from adhering to and accumulating on the inner side, ensuring that the inner side of the filter remains clean at all times, avoiding secondary pollution from the source, and ensuring stable filtration accuracy. If the ultrasonic generator 2 is installed on the outer side of the cylindrical filter, its vibration may directly interfere with the flow field of the medium to be filtered on the outer side (such as disrupting the flow velocity distribution and causing unfiltered impurities to diffuse excessively on the outer side), thereby affecting the filtration efficiency (such as uneven flow velocity leading to excessively rapid accumulation of impurities in some areas). By using the internal installation method, the vibration of the ultrasonic generator 2 mainly acts on the filter body 1 and the clean medium inside (which has been filtered and has extremely low impurity content), with less interference to the flow field of the main fluid to be filtered outside the filter. This can keep the medium passing through the filter body 1 smoothly, reduce local pressure fluctuations or filtration efficiency reduction caused by flow field turbulence, and ensure the stable operation of the entire filtration system.

[0087] In some embodiments, the ultrasonic generator 2 includes:

[0088] Annular oscillation section 21, multiple annular oscillation sections 21 are distributed at intervals along the axial direction of the cylindrical filter screen.

[0089] The ultrasonic generator 2 forms a three-dimensional vibration field by setting multiple annular oscillating parts 21 spaced apart along the axial direction of the cylindrical filter, eliminating dead zones in filter cleaning and preventing vibration blind spots. Each annular oscillating part 21 can cover one circumference of the cylindrical filter. The vibration energy of multiple annular parts is superimposed along the axial direction to form a 360-degree three-dimensional vibration field without dead zones inside the filter. This not only makes the circumferential vibration of the cylindrical filter uniform, but also ensures that the vibration energy can be fully applied to different positions along the axial direction of the cylindrical filter, ensuring consistent vibration at the top, middle, and bottom. This three-dimensional vibration field can specifically solve the problem of easy deposition at both ends of the cylindrical filter. The superimposed vibration of the annular oscillating parts 21 can simultaneously peel off viscous impurities at both ends of the filter, avoiding hidden blockages caused by local accumulation (i.e., the surface appears clean, but the ends are actually partially blocked, affecting the overall flow rate). In actual use, the contamination of the filter screen is often uneven due to the influence of fluid inlet direction, gravity, and flow velocity distribution. The amount of impurities adhering to different areas inside the filter screen varies greatly. For example, the bottom may have more particles deposited due to gravity, while the area near the inlet may have a higher flow velocity and more concentrated impurity impact. Multiple annular oscillators 21 can be independently controlled, with adjustable power and frequency for each annular oscillator 21, allowing for targeted adjustments based on the contamination level of each area of ​​the filter screen. This zoned controllable approach allows for increased power of the bottom annular oscillator 21 when there are more impurities in the bottom annular area of ​​the cylindrical filter screen, while maintaining low power operation in the top area. This precisely removes heavily contaminated areas while avoiding energy waste and excessive filter screen fatigue caused by high-power vibration across the entire area, achieving intelligent adaptation and energy-saving effects. When multiple annular oscillators 21 are working, the ultrasonic vibration waves of adjacent annular sections interfere with each other on the filter screen surface. That is, at the point where the wave crests overlap, the local vibration intensity is significantly enhanced, producing a more intense cavitation effect. Meanwhile, the micro-flow fields formed by vibration in the wave trough areas mutually propel each other, forming annular micro-jet streams along the filter screen surface. The microjets generated by this interference can actively flush away the tiny pores on the filter screen surface. For the pore clogging problem commonly encountered with cylindrical filters, the microjets can cut into the pores along the annular direction, removing the trapped fine impurities, rather than simply stripping surface impurities, significantly improving the filter's cleaning effect. The inner side of a cylindrical filter screen is an arc-shaped surface. With a single rigid oscillating part or a non-annular design, the contact area with the filter screen is limited, easily leading to stress concentration at the contact point. Long-term use may cause cracks or pore deformation in the filter screen. However, the curvature of the annular oscillating part 21 matches the inner curved surface of the filter screen. With multiple annular rings distributed axially, the vibration energy is transferred to the cylindrical filter screen through the entire annular contact surface, resulting in more uniform force distribution. This flexible vibration through surface contact avoids damage to the filter screen due to excessive local vibration, while allowing vibration energy to be more efficiently converted into the filter screen's own vibration (rather than wasted in rigid collisions). When the clean medium inside the filter flows, the vibration of multiple annular oscillating parts 21 will drive the inner fluid to form a spiral rotating flow along the axial direction. This is because each annular vibration generates radial thrust, which, when superimposed, forms a spiral trajectory.This spiral flow significantly enhances the self-cleaning ability of the inner cleaning medium. Impurities stripped by ultrasonic waves move rapidly towards the outlets at both ends of the filter screen with the spiral flow, preventing impurities from suspending inside the filter screen and re-attaching, reducing the circulation and pollution of impurities within the system, and indirectly improving the overall filtration efficiency.

[0090] In some embodiments, the filter device further includes:

[0091] The filter frame 3, the filter body 1 are installed in the filter frame 3, and the ultrasonic generator 2 is embedded in the filter frame 3.

[0092] The ultrasonic generator 2 is embedded within the filter frame 3, preventing the formation of vibration attenuation zones at the connection edges between the filter body 1 and the filter frame 3, which would otherwise cause impurities to accumulate. When the ultrasonic generator 2 is embedded in the filter frame 3, the filter frame 3 itself becomes a vibration transmission carrier, evenly transmitting vibration energy to the entire filter, including the edge areas, thoroughly eliminating dead cleaning corners at the edges. This avoids secondary pollution caused by edge buildup. Since filters generally use flexible filter media, if the ultrasonic vibration frequency is close to its own natural frequency, resonance can easily occur, potentially leading to filter tearing or pore deformation under high-frequency conditions. However, the filter frame 3, as a rigid structure, has a natural frequency much higher than that of the filter body 1. Therefore, when the ultrasonic generator 2 is embedded in the filter frame 3, the filter frame 3 constrains the vibration frequency of the filter body 1. The vibration of the ultrasonic generator 2 is first filtered out by the filter frame 3 to remove potential resonance-inducing frequencies before being transmitted to the filter body 1, ensuring that the filter body 1 remains in a stable, non-resonant vibration state and extending its service life. Furthermore, the filter frame 3 provides a physical barrier for the ultrasonic generator 2, preventing it from directly contacting the filtered medium. This makes it less susceptible to failure due to corrosion, impact, or high-temperature aging, and allows it to withstand harsher environments. During installation, misalignment between the ultrasonic generator 2 and the filter screen can lead to uneven vibration; loose assembly of the filter frame 3 and the filter screen can weaken vibration transmission efficiency. To avoid affecting filtration and cleaning performance, repeated adjustments by professionals are necessary. However, with the filter body 1, filter frame 3, and ultrasonic generator 2 integrated, no separate adjustments to component alignment are required, allowing even non-professionals to quickly complete installation or replacement. The vibration of the filter frame 3 creates flow field disturbances, enhancing impurity removal efficiency. The vibration of the filter frame 3, with the embedded ultrasonic generator 2, simultaneously creates a turbulent flow field in the surrounding fluid. The high-frequency vibration of the filter frame 3 generates micro-vortices on both the filtered and clean sides of the filter body 1. These vortices can carry away detached impurities and move them quickly towards the discharge port, preventing impurity retention.

[0093] According to an embodiment of the present invention, on the other hand, such as Figure 3 As shown, an air handling device is also provided, comprising:

[0094] Controller 4;

[0095] Sensing components;

[0096] The filter device, ultrasonic generator 2 and sensing components are respectively connected to the controller 4. The controller 4 is adapted to receive the monitoring signals of the sensing components to control the switching and working status of the ultrasonic generator 2.

[0097] Since the air handling equipment includes the filter device of the present invention, it has the same technical effects as the filter device, which will not be described in detail here.

[0098] In some embodiments, the sensing component includes:

[0099] The first sensor group 52 is located at the filter body 1 and is suitable for monitoring the dirt status of the filter body 1.

[0100] The second sensor group 51 is located at the air outlet of the air handling equipment and is suitable for monitoring air quality.

[0101] The first sensor group 52 monitors the dirt status of the filter body 1, which serves as the basis for determining whether the filter body 1 needs to be cleaned; the second sensor group 51 monitors the air quality, which serves as the basis for adjusting the operating parameters of the ultrasonic generator 2, thereby precisely controlling the self-cleaning process of the filter device and improving control accuracy.

[0102] In some embodiments, the first sensing group 52 includes:

[0103] A photoelectric sensor is used to monitor the light transmittance of the filter body 1; and / or

[0104] A pressure sensor is used to monitor the pressure difference across the filter body 1.

[0105] Transmittance detection can directly reflect the cleanliness of every part of the filter body 1 through the penetrability of light. Even if there is a small accumulation of impurities in a local area, it can be accurately identified. The method of monitoring transmittance can accurately locate the location and degree of blockage, avoiding filtration failure caused by local blockage. The cleanliness of the filter body 1 is reflected by the pressure difference on both sides of the filter body 1. The feedback is fast, and it can become a core indicator with multiple functions such as real-time monitoring, risk warning, and energy-saving optimization through deep correlation with dynamic response and system energy consumption. It has high reliability, especially in extreme working conditions and complex systems.

[0106] In some embodiments, the second sensing group 51 includes:

[0107] Pollutant monitoring sensors are used to monitor the concentration of pollutants in the air;

[0108] Humidity sensor, used to monitor ambient humidity;

[0109] Temperature sensor used to monitor ambient temperature.

[0110] Ambient temperature and humidity significantly affect cleaning efficiency. By monitoring temperature and humidity in real time, cleaning parameters can be dynamically adjusted. For example, in hot and humid summer weather, the ultrasonic cleaning time is automatically shortened to avoid over-cleaning or under-cleaning due to fixed parameters. Combined with monitoring of ambient temperature and humidity, vibration cleaning is upgraded from simply removing impurities to full-chain pollution control. This is especially beneficial during allergy seasons, reducing allergen rebound after cleaning and making it more suitable for asthma and rhinitis sufferers. Furthermore, through precise matching of environment, pollutants, and cleaning parameters, the air purifier can maintain efficient filter filtration in complex environments (such as kitchens, bathrooms, and pet rooms) while preventing the filter from becoming a source of pollution due to incomplete cleaning.

[0111] In some embodiments, the air handling equipment further includes:

[0112] The dust collection device 6 is located below the filter device and collects the dust that falls off the filter body 1.

[0113] The dust collection device 6 is installed to collect the dust and other impurities that fall off the filter body 1 during the ultrasonic cleaning process in a timely manner, so as to avoid secondary pollution.

[0114] In some embodiments, the filter body 1 is detachably mounted on the air handling equipment.

[0115] The filter body 1 is detachable, allowing the filter to be removed from the air handling unit. When the filter body 1 is connected to an electric ultrasonic cleaner, it can also be used with an ultrasonic cleaning solution for better cleaning results.

[0116] According to embodiments of the present invention, in another aspect, such as Figure 4 As shown, a control method for an air handling device is also provided, comprising:

[0117] Acquire monitoring data from the sensing components;

[0118] When the monitoring data meets the filter cleaning conditions, the ultrasonic generator 2 is activated to vibrate and clean the filter body 1.

[0119] When the filter body 1 has reached a state of dirt that requires cleaning, the ultrasonic generator 2 is activated in time to vibrate and clean the filter body 1, achieving automatic cleaning. The control logic is simple and easy to implement.

[0120] In some embodiments, when the monitoring data meets the filter cleaning conditions, including:

[0121] The pressure difference across the filter body 1 is greater than the pressure threshold; and / or

[0122] The light transmittance value of filter body 1 is lower than the preset light transmittance value.

[0123] The pressure threshold is the pressure difference corresponding to the degree of dirtiness of the filter body 1 when cleaning is required. When the pressure difference across the filter body 1 exceeds the pressure threshold, it indicates that filter cleaning needs to be initiated. Using pressure difference to determine the cleanliness of the filter body 1 provides rapid judgment and feedback, allowing for quick control. Light transmittance is used to characterize the cleanliness of the filter body 1, providing a direct assessment.

[0124] In some embodiments, after activating the ultrasonic generator 2, the following is also included:

[0125] Obtain ambient temperature and / or ambient humidity;

[0126] When the ambient temperature is greater than the temperature threshold or the ambient humidity is greater than the humidity threshold, the vibration intensity and / or vibration frequency of the ultrasonic generator 2 are controlled and adjusted, and the ultrasonic generator 2 continues to run until the pressure difference on both sides of the filter body 1 is less than or equal to the pressure threshold, at which point the ultrasonic generator 2 is turned off.

[0127] In high-temperature environments (e.g., T>30℃), vibration intensity must be increased to maintain effective vibration energy on the filter surface and prevent cleaning failure. At high temperatures, material energy absorption increases, transmission path losses expand, impurity adhesion strengthens, and the medium's auxiliary effect weakens, leading to a significant attenuation of effective vibration energy on the filter body surface. Therefore, vibration intensity must be increased to offset energy losses at multiple stages, ensuring that the energy ultimately acting on the filter surface is sufficient to remove impurities and maintain cleaning effectiveness. Conversely, in high-humidity environments (e.g., relative humidity H>60%), lowering the frequency avoids water molecule resonance absorption, significantly improving sound wave penetration and cleaning efficiency.

[0128] In some embodiments, controlling the vibration intensity or vibration frequency of the ultrasonic generator 2 includes:

[0129] Based on the relation A=A base +k1·(T-30) adjusts the vibration intensity of ultrasonic generator 2, where A is the target vibration intensity of ultrasonic generator 2. base is the basic vibration intensity of ultrasonic generator 2, k1 is the vibration intensity adjustment coefficient, and T is the real-time monitored ambient temperature;

[0130] Based on the relation f=f base -k2·(H-60) adjusts the vibration frequency of the ultrasonic generator 2, where f is the target vibration frequency of the ultrasonic generator 2. base K is the fundamental vibration frequency of ultrasonic generator 2, k2 is the vibration frequency adjustment coefficient, and H is the ambient humidity monitored in real time.

[0131] Based on the fundamental vibration intensity and frequency of the ultrasonic generator 2, and the real-time monitored ambient temperature and humidity, the vibration intensity of the ultrasonic generator 2 is adjusted using the aforementioned relationship, making the adjustment more precise. By precisely coupling environmental variables with energy output, the limitations of the ultrasonic generator 2 operating with fixed parameters are overcome, improving cleaning stability, optimizing energy consumption control, and enhancing system adaptability. This upgrade from passive adjustment to active optimization enables the filter cleaning device to adapt to more complex application requirements.

[0132] In some embodiments, after controlling the start of the ultrasonic generator 2, the following is also included:

[0133] Obtain feedback information from the sensing components to determine the level of dirtiness of the filter body 1;

[0134] Based on the level of dirtiness, the vibration intensity, vibration frequency, and cleaning duration of the ultrasonic generator 2 are controlled and adjusted according to a preset algorithm.

[0135] The vibration intensity, vibration frequency, and cleaning time of the ultrasonic generator 2 are matched and adjusted according to the different levels of dirt on the filter body 1. The targeted cleaning method avoids over-cleaning, which increases energy consumption, or incomplete cleaning, thereby improving energy efficiency.

[0136] In some embodiments, the level of dirtiness is represented by Level, where Level∈{1,2,3}; the preset algorithm includes:

[0137] A=A base +x1·Level+x2·(C VOCs / C VOCs,threshold In the formula, A is the target vibration intensity of the ultrasonic generator 2. base The basic vibration intensity of ultrasonic generator 2 is given by C, where x1 and x2 are vibration intensity adjustment coefficients, respectively. VOCs To monitor VOCs concentration in real time, C VOCs,threshold VOCs concentration threshold;

[0138] f=f base +x3·Level+x4·(C PM2.5 / C PM2.5,threshold In the formula, f is the target vibration frequency of the ultrasonic generator 2. base x3 and x4 are the fundamental vibration frequency of ultrasonic generator 2, respectively, and C is the vibration frequency adjustment coefficient. PM2.5 To monitor PM2.5 concentration in real time, C PM2.5,threshold The PM2.5 concentration threshold;

[0139] t=t base +m·Level, where t is the target cleaning time, t baseWhere m is the base cleaning time and m is the contamination level coefficient. In one embodiment, t base =10s, m=2s.

[0140] The vibration intensity, vibration frequency, and cleaning time of the ultrasonic generator 2 can be adaptively adjusted according to the environment (air quality, ambient temperature and humidity) and the level of dirt on the filter body 1. This precise matching can achieve effective cleaning while saving energy and improving the user experience.

[0141] It should be noted that the pollution levels of the filter body 1 include light pollution, moderate pollution, and heavy pollution. In one embodiment, the pressure difference (filter resistance) across the filter is ΔR ∈ [50, 100] Pa when the filter is lightly polluted; ΔR ∈ [100, 150] Pa when the filter is moderately polluted; and ΔR > 150 Pa when the filter is heavily polluted.

[0142] Figure 5 The working principle of the control device of the air handling equipment is given. Figures 6-9 The working principles of the data acquisition module, processing and judgment module, control execution module, and feedback recording module of the air handling equipment are given.

[0143] This invention provides a smart air purifier based on ultrasonic vibration, comprising a housing, a filter device, an ultrasonic generator 2, sensing components, and a controller 4. The ultrasonic generator 2 is integrated inside the filter frame 3, generating high-frequency mechanical vibrations (frequency 20-40kHz, amplitude 5-15μm) through a piezoelectric ceramic sheet, directly acting on the fiber layer of the filter body 1 to detach attached pollutants. The sensing components are used to detect the degree of pollution on the filter and air quality, including but not limited to volatile organic compound (VOC) sensors, PM2.5 sensors, temperature sensors, and humidity sensors. Volatile organic compounds (VOCs) are important precursors to the formation of secondary pollutants such as fine particulate matter (PM2.5) and ozone. The filter body 1 is a cylindrical filter, comprising an outer layer 11, a middle layer 12, and an inner layer 13. The ultrasonic generator 2 is disposed in the inner layer 13.

[0144] Specifically, the filter body of the filter device adopts a three-layer composite design, with an outer layer of PP cotton (weighing 80g / m³). 2 The system pre-filters large particles, with a middle electret meltblown layer (fiber diameter 0.5μm) adsorbing PM2.5, and an inner layer loaded with 6 sets of annular ultrasonic generators (diameter 25mm, power 8W / set).

[0145] Controller 4 uses data detected by the sensing components (e.g., PM2.5 ≥ 75 μg / m³) 3(Or the light transmittance decreases by 30%), dynamically adjust the start and stop frequency of the ultrasonic generator 2, and adjust the cleaning cycle (adjustable from 5 to 120 minutes) based on the pollution accumulation curve fitted by historical data to optimize cleaning effect and energy consumption.

[0146] The ultrasonic generator 2 has a frequency range of 20kHz to 40kHz, and the vibration intensity can be adjusted according to the material of the filter body 1 and the type of contaminants to ensure cleaning effect while avoiding damage to the filter.

[0147] The sensing components include a filter contamination detection module and an air quality detection module. The filter contamination detection module determines the degree of pollution by measuring the filter resistance or pressure difference, while the air quality detection module assesses air quality by detecting indicators such as PM2.5, PM10, and VOCs.

[0148] The controller 4 uses a microprocessor or single-chip microcomputer to analyze sensor data through a preset algorithm and dynamically adjust the working mode of the ultrasonic generator 2, including the adjustment of cleaning frequency, vibration intensity and duration.

[0149] The air purifier also features a user interface that displays air quality data and filter status, and allows users to manually start or adjust the cleaning mode.

[0150] Placing a dust bin below the filter ensures that dust shaken off the filter falls into the bin, preventing it from settling on other parts of the air purifier and interfering with its operation. Simultaneously, an infrared dust sensor (acting as a dust full sensor 7) is installed inside the dust bin, positioned on both inner walls. This sensor determines the dust content and, when it reaches a certain level, sends a signal to the control system, triggering a cleaning signal to remind the user to empty the dust bin promptly.

[0151] This embodiment achieves efficient cleaning of the filter through ultrasonic vibration, effectively removing particulate matter and contaminants from the filter surface and improving purification efficiency. By monitoring the filter's contamination level and air quality in real time, the cleaning frequency is dynamically adjusted to avoid energy waste caused by over-cleaning. Intelligent cleaning extends the filter's lifespan, reduces the frequency of filter replacement, and lowers operating costs. Furthermore, the filter device of this invention has a compact structure, is easy to integrate, and is suitable for various types of air purifiers.

[0152] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by this application.

Claims

1. A control method for an air handling equipment, characterized in that, The air handling equipment includes: Controller (4) and sensing components; The filter device includes a filter body (1) and an ultrasonic generator (2) that is in contact with the filter body (1); the ultrasonic generator (2) and the sensing component are respectively connected to the controller (4), which is adapted to receive the monitoring signal of the sensing component to control the switching and working state of the ultrasonic generator (2). The control method includes: Acquire the monitoring data of the sensing component; When the monitoring data meets the filter cleaning conditions, the ultrasonic generator (2) is activated to vibrate and clean the filter body (1). Obtain ambient temperature and / or ambient humidity; When the ambient temperature is greater than the temperature threshold or the ambient humidity is greater than the humidity threshold, the vibration intensity and / or vibration frequency of the ultrasonic generator (2) are controlled and adjusted, and the ultrasonic generator (2) continues to run until the pressure difference on both sides of the filter body (1) is less than or equal to the pressure threshold and then the ultrasonic generator (2) is turned off. The control and adjustment of the vibration intensity or vibration frequency of the ultrasonic generator (2) includes: Based on the relation A=A base +k1·(T-30) adjusts the vibration intensity of the ultrasonic generator (2), where A is the target vibration intensity of the ultrasonic generator (2). base The basic vibration intensity of the ultrasonic generator (2) is given by k1, where k1 is the vibration intensity adjustment coefficient and T is the ambient temperature monitored in real time. Based on the relation f=f base -k2·(H-60) adjusts the vibration frequency of the ultrasonic generator (2), where f is the target vibration frequency of the ultrasonic generator (2), f base K is the basic vibration frequency of the ultrasonic generator (2), k2 is the vibration frequency adjustment coefficient, and H is the ambient humidity monitored in real time.

2. The control method according to claim 1, characterized in that, After the ultrasonic generator (2) is started, the control also includes: Obtain feedback information from the sensing components to determine the dirt level of the filter body (1); According to the level of dirt, the vibration intensity, vibration frequency and cleaning time of the ultrasonic generator (2) are controlled and adjusted according to a preset algorithm.

3. The control method according to claim 2, characterized in that, The level of dirtiness is represented by Level, where Level∈{1,2,3}; the preset algorithm includes: A=A base +x1·Level+x2·(C VOCs / C VOCs,threshold ), where A is the target vibration intensity of the ultrasonic generator (2), A base The basic vibration intensity of the ultrasonic generator (2) is given by x1 and x2, which are vibration intensity adjustment coefficients, respectively. VOCs To monitor VOCs concentration in real time, C VOCs,threshold VOCs concentration threshold; f=f base +x3·Level+x4·(C PM2.5 / C PM2.5,threshold ), where f is the target vibration frequency of the ultrasonic generator (2), f base The fundamental vibration frequency of the ultrasonic generator (2) is given by x3 and x4, which are vibration frequency adjustment coefficients, respectively. PM2.5 To monitor PM2.5 concentration in real time, C PM2.5,threshold The PM2.5 concentration threshold; t=t base +m·Level, where t is the target cleaning time, t base The base cleaning time is denoted by m, where m is the pollution level coefficient.

4. The control method according to claim 1, characterized in that, The condition that the monitoring data meets the filter cleaning requirements includes: The pressure difference across the filter body (1) is greater than the pressure threshold; and / or The transmittance value of the filter body (1) is lower than the preset transmittance value.

5. The control method according to claim 1, characterized in that, The filter body (1) includes: A cylindrical filter screen, wherein the ultrasonic generator (2) is disposed on the inner side of the cylindrical filter screen.

6. The control method according to claim 5, characterized in that, The ultrasonic generator (2) includes: Annular oscillating sections (21) are distributed at intervals along the axial direction of the cylindrical filter screen.

7. The control method according to claim 1, characterized in that, The filter device further includes: The filter frame (3) is installed on the filter frame (3), and the ultrasonic generator (2) is embedded in the filter frame (3).

8. The control method according to claim 1, characterized in that, The sensing component includes: The first sensor group (52) is disposed at the filter body (1) and is suitable for monitoring the dirt status of the filter body (1); The second sensor group (51) is located at the air outlet of the air handling equipment and is suitable for monitoring air quality.

9. The control method according to claim 8, characterized in that, The first sensor group (52) includes: A photoelectric sensor is used to monitor the light transmittance of the filter body (1); and / or A pressure sensor is used to monitor the pressure difference across the filter body (1).

10. The control method according to claim 8 or 9, characterized in that, The second sensor group (51) includes: Pollutant monitoring sensors are used to monitor the concentration of pollutants in the air; Humidity sensor, used to monitor ambient humidity; Temperature sensor used to monitor ambient temperature.

11. The control method according to claim 1, characterized in that, The air handling equipment also includes: A dust collection device (6) is disposed below the filter device to collect dust that is shaken off the filter body (1).

12. The control method according to claim 1, characterized in that, The filter body (1) is detachably installed in the air handling equipment.

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