Electromagnetic charged hall driven dust removal device and dust removal method

Abstract

The application discloses a dust removal device and method driven by electromagnetic charging and Hall, which comprises a shell assembly, a power supply module, an electric field generating assembly, a magnetic field generating assembly and a dust collecting assembly. The shell assembly forms a battery compartment, a coupling cavity and a dust collecting cavity. The coupling cavity is provided with an open port, and the dust collecting cavity and the coupling cavity are connected with each other. The electric field generating assembly is installed in the coupling cavity to form a gradient alternating electric field in the coupling cavity. The magnetic field generating assembly is installed in the coupling cavity to form a gradient alternating magnetic field in the coupling cavity. The gradient alternating magnetic field and the gradient alternating electric field are orthogonally coupled in space. The dust collecting assembly is used to drive the dust in the coupling cavity to be collected into the dust collecting cavity. The application meets multiple requirements of efficient dust removal, low noise operation, no contact loss and scene universality.

Description

Technical Field

[0001] This invention relates to the field of intelligent cleaning and dust control technology, specifically to an electromagnetically charged Hall effect driven dust removal device and method. Background Technology

[0002] Consumers' demands for cleaning equipment have gradually evolved from basic "cleanliness" to "low-noise operation, no consumable wear and tear, protection of finishes, and ultra-clean dust removal." In particular, special scenarios such as hospital sanatoriums, high-end hotels, and precision instrument workshops place more stringent requirements on the quiet performance and fine particulate matter removal capabilities of dust removal equipment.

[0003] The current mainstream dust removal equipment technology still primarily relies on traditional negative pressure suction and mechanical wiping: a high-speed motor drives a fan to generate negative pressure suction airflow, which, combined with rotating brushes and mopping components, removes surface dust and stains. Extensive research and optimization have been conducted within the industry surrounding this technology. For example, some patented technologies focus on the coordination of cleaning liquid spraying and mechanical wiping, improving cleaning effectiveness by optimizing liquid concentration and wiping speed; some patents improve the positioning and installation structure of the mopping components, enhancing the reliability of the mechanical structure; and some patents introduce multispectral visual detection technology to achieve the identification and targeted cleaning of soiled areas.

[0004] However, all the above-mentioned improvement solutions do not deviate from the basic technical framework of "mechanical contact + negative pressure suction," and there are inherent defects that are difficult to overcome in practical applications: First, the mechanical contact cleaning structure is prone to scratches due to long-term friction with the surface to be cleaned, and consumables such as brushes and cloths wear out quickly and need to be replaced regularly, resulting in high usage and maintenance costs; Second, the high-speed fan and rotating moving parts generate significant noise during operation, making it difficult to meet the needs of quiet use scenarios; Third, relying on the action of negative pressure airflow and mechanical brushes, the efficiency of capturing fine particles of micron size and below is limited, making it difficult to achieve ultra-clean cleaning effects; Fourth, the high energy consumption of high-speed rotating parts directly reduces the battery life of mobile cleaning equipment, and mechanical wear also shortens the overall service life of the equipment.

[0005] In addition, existing technologies also include dust removal solutions based on electrostatic adsorption. However, these solutions are mostly fixed duct-type air purification structures, which are not suitable for mobile surface cleaning scenarios. Furthermore, relying solely on electrostatic adsorption is insufficient to effectively remove dust particles tightly adhered to object surfaces, resulting in a bottleneck in overall dust removal efficiency. There are also magnetic dust removal solutions for specific ferrous surfaces, but their applicability is highly limited and cannot universally address the cleaning needs of regular neutral dust.

[0006] In summary, existing dust removal technologies are always limited by the inherent bottlenecks of traditional technical approaches, and cannot simultaneously meet the multiple requirements of efficient dust removal, low-noise operation, no contact loss, and universal applicability. There is an urgent need for a dust removal technology solution based on a completely new principle to fundamentally break through the limitations of existing technologies. Summary of the Invention

[0007] Therefore, the present invention provides an electromagnetically charged Hall-driven dust removal device and method that simultaneously meets multiple requirements such as high-efficiency dust removal, low-noise operation, no contact loss, and universal applicability.

[0008] To solve the above-mentioned technical problems, the present invention provides an electromagnetically charged Hall-driven dust removal device, including a housing assembly, a power supply module, an electric field generating assembly, a magnetic field generating assembly, and a dust collection assembly; The housing assembly encloses to form a battery compartment, a coupling cavity, and a dust collection cavity. The coupling cavity has an open end along the first direction of the dust removal device, and the dust collection cavity is in communication with the interior of the coupling cavity. The power supply module is installed inside the battery compartment and is used to provide DC and AC power to the dust removal device. The electric field generating component is installed in the coupling cavity to form a gradient alternating electric field inside the coupling cavity, causing the dust at the opening to undergo surface polarization and accumulate surface charge. The magnetic field generating component is installed in the coupling cavity to form a gradient alternating magnetic field inside the coupling cavity. The gradient alternating magnetic field and the gradient alternating electric field are orthogonally coupled in space to form the Hall effect field. The dust collection assembly is used to drive the dust in the coupling cavity to be collected into the dust collection cavity; When the dust removal device moves along its second direction, the charged dust at the opening forms relative motion with the gradient alternating electric field and gradient alternating magnetic field. Under the action of the Lorentz force, it moves into the coupling cavity along the first direction of the dust removal device. The dust in the coupling cavity enters the dust collection cavity under the drive of the dust collection component. The first and second directions of the dust removal device are perpendicular to each other.

[0009] Furthermore, the electric field generating component includes a plurality of electrode plate units arranged sequentially along the second direction of the dust removal device; Each of the electrode plate units includes two electrode plates that are spaced apart and symmetrically arranged along a second direction of the dust removal device; Each of the electrode plates extends along the third direction of the dust removal device, and the plate surface forms an acute angle with the reference plane formed by the second direction and the third direction of the dust removal device. The distance between the ends of the two electrode plates in the same electrode plate unit facing the opening is greater than the distance between the ends facing away from the opening. The first direction, the second direction and the third direction of the dust removal device are perpendicular to each other. The multiple electrode units enable the main direction of the electric field to simultaneously have components along the first direction of the dust removal device and components along the second direction of the dust removal device, forming a gradient alternating electric field with gradually changing field strength along the first direction and the second direction of the dust removal device. The magnetic field generating component includes multiple coil units, and each coil unit corresponds to one of the pole plate units. Each coil unit includes two coils disposed on both sides of the corresponding electrode unit along the third direction of the dust removal device; The magnetic field generated by the coil unit extends along the third direction of the dust removal device and remains orthogonal to the component of the electric field along the second direction of the dust removal device.

[0010] Furthermore, the electrode plate is a porous rectangular electrode plate, and the angle between each electrode plate and the first direction is 15°-22°. The distance between two adjacent electrode plate units along the second direction of the dust removal device is 150mm-200mm. The coil is a rectangular electromagnetic coil.

[0011] Furthermore, the dust collection assembly includes a negative pressure mechanism and a dust collection drawer. The negative pressure mechanism is connected to the dust collection chamber and is used to create a negative pressure in the dust collection chamber. The dust collection drawer can be pulled out of the dust collection chamber to carry the dust entering the dust collection chamber.

[0012] Furthermore, the dust collection assembly also includes a negative ion mechanism, which is used to release negative ions to the charged dust at the inlet of the dust collection chamber, neutralize the polarization charge on the surface of the dust, and cause the dust to settle into the dust collection chamber after losing its charge.

[0013] Furthermore, the dust collection chamber is located at the rear end of the coupling chamber along the moving direction of the dust removal device.

[0014] Furthermore, the power supply module includes an energy storage component and an inverter control circuit; the inverter control circuit outputs two alternating electrical signals of the same frequency, which are respectively supplied to the electric field generating component and the magnetic field generating component. The inverter control circuit can adjust the phase difference between the two alternating signals to match the timing of dust polarization charging and magnetic field driving, so as to ensure that charged dust obtains a stable Lorentz force when it enters the orthogonal magnetic field region. The energy storage component is a lithium-ion battery pack that outputs a DC voltage of 12V-18V. The inverter control circuit converts the DC power output from the energy storage component into an alternating voltage output with a frequency of 50Hz-60Hz and a voltage of 30V-60V.

[0015] Furthermore, it also includes a moving component, which is installed on the side of the housing assembly near the opening. The moving component includes multiple drive wheels, each of which includes a drive motor, a drive shaft, and a moving wheel. The drive motor drives the moving wheel to rotate through the drive shaft, thereby driving the dust removal device as a whole to move at a constant speed along its own second direction.

[0016] The present invention also provides a dust removal method driven by electromagnetically charged Hall effect, which uses the aforementioned dust removal device to perform dust removal operations, and includes the following steps: S1. Place the dust removal device on the working surface, with the opening of the coupling cavity facing the working surface; S2. The electric field generating component generates a gradient alternating electric field in the coupling cavity. The gradient alternating electric field acts on the dust on the working surface, causing the dust surface to form a surface potential, resulting in charge accumulation and polarization. The magnetic field generating component synchronously generates a gradient alternating magnetic field. The gradient alternating magnetic field and the gradient alternating electric field are orthogonally coupled in space to form the Hall effect field. S3. The dust removal device moves at a constant speed along the working surface. The gradient alternating electric field and gradient alternating magnetic field in the coupling cavity generate relative displacement with respect to the stationary dust on the working surface. The charged dust cuts the magnetic field lines with the relative motion and undergoes uniform acceleration along the first direction of the dust removal device under the action of the Lorentz force. Combined with the relative uniform motion along the second direction of the dust removal device, it forms a projectile-like trajectory and moves away from the working surface into the coupling cavity. S4. The dust collection component drives the dust into the dust collection chamber to complete the dust removal operation on the working surface.

[0017] Furthermore, the dust on the working surface is in a moist state, and a water film forms on the surface of the dust to improve the dielectric properties of the dust.

[0018] Compared with the prior art, the above-mentioned technical solution of the present invention has the following advantages: Firstly, the electromagnetically charged Hall-driven dust removal device and method of the present invention, by imparting an electric charge to the dust particles through an electromagnetic field and driving them to detach from the working surface, eliminates the need for brushes, cloths, or other contact components to rub against the working surface, thus avoiding the risk of scratching the surface and eliminating the need for consumable replacement, significantly reducing usage and maintenance costs and extending the equipment's service life. Secondly, it abandons the traditional structure of high-speed fans and rotating brush groups; the core dust removal process relies on the action of an electromagnetic field. During operation, there is no mechanical noise from high-speed rotating parts, only a faint sound from low-power negative pressure airflow, which can meet the stringent requirements of quiet environments such as hospitals, libraries, and high-end residences. Thirdly, through electric field polarization charging and Lorentz force directional driving, it can effectively act on micron-sized and smaller fine particles, breaking through the bottleneck of low particle capture efficiency of traditional negative pressure airflow, and achieving an ultra-clean dust removal effect. Furthermore, the energy consumption of electromagnetic field-driven systems is far lower than that of traditional high-speed negative pressure fans. With the same battery capacity, the battery life of mobile cleaning equipment can be significantly extended. At the same time, the system has a compact structure, making it easy to integrate into various miniaturized cleaning devices. Attached Figure Description

[0019] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the dust removal device disclosed in an embodiment of the present invention; Figure 2 This is an internal schematic diagram of the dust removal device disclosed in an embodiment of the present invention; Figure 3 This is a side view of the dust removal device disclosed in an embodiment of the present invention; Figure 4 This is a schematic diagram of the magnetic field generating component disclosed in an embodiment of the present invention; Figure 5 This is a schematic diagram of the drive wheel disclosed in an embodiment of the present invention.

[0021] Among them, 1. Housing assembly; 11. Battery compartment; 12. Coupling cavity; 121. Opening; 13. Dust collection cavity; 2. Battery module; 3. Electric field generating component; 31. Electrode plate; 4. Magnetic field generating component; 41. Coil; 5. Dust collection assembly; 51. Negative pressure mechanism; 52. Dust collection drawer; 53. Negative ion mechanism 6. Dust; 7. Drive wheel; 71. Drive motor; 72. Drive shaft; 73. Moving wheel. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0023] See Figures 1 to 5 As shown, this invention discloses an embodiment of an electromagnetically charged Hall-driven dust removal device.

[0024] The electromagnetically charged Hall-driven dust removal device includes a housing assembly 1, a power supply module 2, an electric field generating assembly 3, a magnetic field generating assembly 4, and a dust collection assembly 5; The aforementioned housing assembly 1 encloses to form a battery compartment 11, a coupling cavity 12, and a dust collection cavity 13. The coupling cavity 12 has an open opening 121 at one end along the first direction of the dust removal device. The dust collection cavity 13 is internally connected to the coupling cavity 12. The power supply module 2 is installed in the battery compartment 11 and is used to provide DC and AC power to the dust removal device. The electric field generating component 3 is installed in the coupling cavity 12 to form a gradient alternating electric field inside the coupling cavity 12, so that the dust 6 at the opening 121 will undergo surface polarization and accumulate surface charge. The magnetic field generating component 4 is installed in the coupling cavity 12 to form a gradient alternating magnetic field inside the coupling cavity 12. The gradient alternating magnetic field and the gradient alternating electric field are orthogonally coupled in space to form the Hall effect field. The dust collection assembly 5 is used to drive the dust in the coupling cavity 12 into the dust collection cavity 13; When the dust removal device moves along its second direction, the charged dust 6 at the opening forms relative motion with the gradient alternating electric field and the gradient alternating magnetic field. Under the action of the Lorentz force, it moves into the coupling cavity 12 along the first direction of the dust removal device. The dust collection component 5 drives the dust 6 into the dust collection cavity 13. The first and second directions of the dust removal device are perpendicular to each other.

[0025] In the above description, the housing assembly 1 serves as the external support and protective shell for the dust removal device, and also as the installation reference for all internal functional units. The battery compartment 11 is an independently separated, enclosed chamber within the housing assembly, specifically designed to house the power supply module 2. Its independent separation design physically isolates the power supply module 2 from the coupling cavity 12 and the dust collection cavity 13, preventing dust and moisture from entering the battery area and causing electrical faults. It also provides electromagnetic shielding, reducing interference from the battery circuitry to the electromagnetic field and ensuring power supply safety and field stability. The coupling cavity 12 is the physical carrier of the orthogonal superposition of the spatial electric and magnetic fields, where two processes—dust polarization charging and Lorentz force directional removal—are simultaneously completed. One end of the coupling cavity 12 has an open opening, allowing the electromagnetic field to act on the dust to be cleaned at the open opening, while simultaneously driving the dust into the coupling cavity 12. The open opening 121 is the opening on the side of the coupling cavity 12 facing the working surface, serving as a common channel for the electromagnetic field to radiate outwards and for dust to enter inwards. Dust collection chamber 13 is an independent chamber inside the housing assembly used to collect and store dust.

[0026] Power supply module 2 is responsible for power conversion and distribution. One output is DC power to supply DC load, and the other output is two controllable alternating currents through inverter conversion, which drive electric field generating component 3 and magnetic field generating component 4 respectively.

[0027] The electric field generating component 3 constructs a gradient alternating electric field to achieve dust polarization loading. After the alternating voltage is applied, a gradient-distributed electric field space is formed within the coupling cavity 12. A gradient alternating electric field refers to an alternating electric field whose field strength gradually varies along the spatial direction, which can achieve gradient polarization loading of dust at different locations.

[0028] The magnetic field generating component 4 constructs a gradient alternating magnetic field to achieve Lorentz force driving. After the alternating current is connected, a uniform transverse magnetic field is formed in the coupling cavity 12, which is orthogonally coupled with the electric field to jointly constitute the Hall effect field. The gradient alternating magnetic field refers to an alternating magnetic field in which the amplitude of the magnetic induction intensity is continuously and gradually distributed along a specific direction in space, and the magnitude and direction of the magnetic field change periodically with time at a fixed frequency.

[0029] Orthogonal coupling refers to the principal directions of the electric field vector and the magnetic field vector intersecting perpendicularly at 90° in space, with their areas of action largely overlapping. Orthogonal coupling is a necessary spatial condition for generating directional Lorentz force. The Hall effect field refers to the spatial region jointly covered by orthogonal electric and magnetic fields, where charged particles exhibit relative motion.

[0030] The dust collection component 5 is only responsible for assisting in pulling away the dust that has been driven away by the Lorentz force, and has low noise and energy consumption.

[0031] The Lorentz force is a fundamental force in electromagnetism, referring to the electromagnetic force exerted on a moving charged particle in a magnetic field. The direction of the force is determined by the left-hand rule and is perpendicular to both the particle's direction of motion and the magnetic field direction. In this solution, the Lorentz force is the core driving force for dust removal, completely replacing the negative pressure suction and mechanical brushing forces of traditional dust removal equipment. By creating relative velocity through device movement, stationary charged dust is treated as moving charge carriers, thereby obtaining a directional driving force that vertically detaches from the working surface, achieving non-contact dust removal.

[0032] The dust removal device operates by including the following steps: S1. Position the dust removal device with its open end 121 facing the work surface; S2. The electric field generating component 3 generates a gradient alternating electric field in the coupling cavity 12. The electric field acts on the dust on the working surface, causing the dust surface to form a surface potential, resulting in charge accumulation and polarization. The magnetic field generating component 4 synchronously generates a gradient alternating magnetic field. The gradient alternating magnetic field and the gradient alternating electric field are orthogonally coupled in space to form the Hall effect field. S3. The dust removal device moves at a constant speed along the working surface. The orthogonal electromagnetic field in the coupling cavity 12 generates a relative displacement with respect to the stationary dust on the working surface. The charged dust cuts the magnetic field lines with the relative motion and undergoes uniform acceleration along the first direction of the dust removal device under the action of the Lorentz force. Combined with the relative uniform motion along the second direction of the dust removal device, it forms a projectile-like trajectory and moves away from the working surface into the coupling cavity. S4. The dust collection component 5 drives the dust into the dust collection chamber 13 to complete the dust removal operation on the working surface.

[0033] In the above text, step S1 completes the equipment placement. The open end of the dust removal device is placed facing the work surface, ensuring a suitable distance between the open end and the work surface. Too large a distance will lead to attenuation of the electric field strength and insufficient load, while too small a distance will easily cause it to bump into the work surface, affecting the smoothness of movement.

[0034] Step S2 establishes the field and charges the dust. After the device starts, the electric and magnetic field units work synchronously, rapidly constructing an orthogonally coupled electromagnetic field within the coupling cavity. Surface potential refers to the potential difference formed on the particle surface as positive and negative charges shift to both sides under the influence of the electric field. The gradient electric field acts on the dust on the working surface through the open opening. Free charges on the dust migrate directionally under the influence of the electric field force, accumulating stable polarized charges on the particle surface, completing the transformation from "neutral dust" to "charged carriers." The synchronously generated orthogonal magnetic field and electric field spatially overlap, forming a complete Hall effect region.

[0035] Step S3 achieves Hall-driven dust detachment. The dust collector moves at a constant speed, and the electromagnetic field sweeps across the working surface synchronously with it. The charged dust and the magnetic field form relative motion, cutting the magnetic field lines and generating a Lorentz force along the first direction. When the Lorentz force is greater than the adhesion force between the dust and the working surface, the dust is peeled off the surface. After peeling, the dust maintains a relatively uniform speed along the direction of travel and is continuously accelerated by a constant force along the first direction. The two perpendicular motions combine to form a projectile-like trajectory, which moves stably into the coupling cavity. The projectile-like trajectory refers to the parabolic trajectory formed by the dust maintaining a relatively uniform speed along the direction of travel and undergoing uniform acceleration under a constant Lorentz force along the normal direction. The motions in the two perpendicular directions are combined, and the trajectory is consistent with the laws of projectile motion.

[0036] Step S4 achieves dust collection and storage. The dust collection component 5 pulls the floating dust in the coupling cavity 12 to the dust collection cavity 13, completing the settling and storage; the device continues to move, and the above loading-dispersing-collection process is repeated cyclically to achieve continuous cleaning of the entire working surface.

[0037] The above technical solution achieves several key advantages. First, by applying an electromagnetic field to charge the dust particles and driving them away from the work surface, the entire process eliminates the need for brushes, cloths, or other contact components to rub against the surface. This avoids the risk of scratching the surface and eliminates the need for consumable replacements, significantly reducing usage and maintenance costs and extending the equipment's lifespan. Second, it abandons the traditional high-speed fan and rotating brush assembly structure. The core dust removal process relies on the electromagnetic field, eliminating mechanical noise from high-speed rotating parts and producing only a faint sound from the low-power negative pressure airflow. This meets the stringent requirements for quiet operation in environments such as hospitals, libraries, and high-end residences. Third, through electric field polarization charging and Lorentz force directional driving, it effectively targets micron-sized and smaller particles, overcoming the bottleneck of low particle capture efficiency in traditional negative pressure airflow and achieving ultra-clean dust removal. Fourth, the energy consumption of electromagnetic field-driven systems is far lower than that of traditional high-speed negative pressure fans. With the same battery capacity, this significantly extends the runtime of mobile cleaning equipment, while its compact structure facilitates integration into various miniaturized cleaning devices.

[0038] In this embodiment, the electric field generating component 3 includes a plurality of electrode plate units arranged sequentially along the second direction of the dust removal device; Each of the above-mentioned electrode plate units includes two electrode plates 31 arranged at intervals and symmetrically along the second direction of the dust removal device; The aforementioned electrode plate 31 extends along the third direction of the dust removal device, and the plate surface forms an acute angle with the reference plane formed by the second direction and the third direction of the dust removal device. The distance between the ends of the two electrode plates 31 of the same electrode plate unit facing the opening 121 is greater than the distance between the ends facing away from the opening 121. The first direction, the second direction and the third direction of the dust removal device are perpendicular to each other. The aforementioned multiple electrode units enable the main direction of the electric field to simultaneously possess components along the first direction of the dust removal device and the second direction of the dust removal device, forming a gradient alternating electric field with gradually varying field strength along the first direction and the second direction of the dust removal device. The aforementioned magnetic field generating component 4 includes multiple coil units, each corresponding to one of the aforementioned electrode units; Each of the above-mentioned coil units includes two coils 41 disposed on both sides of the corresponding electrode unit along the third direction of the dust removal device. The main direction of the magnetic field generated by the above-mentioned coil unit extends along the third direction of the dust removal device and remains orthogonal to the component of the main direction of the electric field along the second direction of the dust removal device.

[0039] In the above text, the electrode unit is the smallest modular charging unit of the electric field generating component. It consists of two symmetrically arranged electrode units and is the basic structure for realizing a spatial gradient electric field. Multiple sets of electrode units are arranged sequentially along the direction of travel. Electrode 31 is the basic building block of the electrode unit and is the electrode component that directly generates the electric field. The plate surface is parallel to the width direction of the device and arranged at an inclined angle, which is the structural basis for the formation of bidirectional components of the electric field and the construction of gradient distribution.

[0040] The coil unit is the smallest modular excitation unit of the magnetic field generating assembly. It consists of two symmetrically arranged electromagnetic coils, which are arranged one-to-one with the pole plate units. Each coil group corresponds to a set of pole plates, ensuring that the electric field charging area and the magnetic field action area precisely coincide. After the dust is polarized, it is immediately placed in the orthogonal magnetic field, and the removal process has no time or space difference, resulting in the highest energy utilization efficiency. When the coils wound in the same direction are energized, they form a uniform transverse magnetic field in the middle region, which is strictly orthogonal to the electric field propagation component. Coil 41 is the basic building block of the coil unit and is the excitation component that directly generates the magnetic field. It is symmetrically arranged on both sides of the pole plate along the width of the device, which is the structural guarantee that the magnetic field direction is orthogonal to the electric field propagation component.

[0041] When the dust removal device is working, each electrode plate 31 is tilted relative to the reference plane, so that the normal direction of the electrode plate simultaneously contains both a first direction component and a second direction component. After the alternating voltage is applied, an inclined electric field is formed between two electrodes in the same group, and the electric field lines simultaneously have components in the normal direction (first direction) and the direction of travel (second direction). Multiple groups of electrode plate units are arranged sequentially along the second direction, with potential differences and spacing differences between adjacent electrodes. The electric field strength gradually increases along the direction of travel, while the electric field strength decreases with distance along the first direction, ultimately forming a bidirectional gradually changing gradient alternating electric field. The function of the gradient field is to gradually deepen the polarization of dust as it enters the field area and fully enters the core area, avoiding charge escape caused by instantaneous strong electric fields, and achieving more complete and stable charging.

[0042] Each set of coils is symmetrically arranged on both sides of the third direction of the electrode unit. After the two coils are energized in the same direction, an alternating current is applied, generating a directional magnetic field according to the right-hand screw rule. A uniform magnetic field extending along the third direction is formed in the middle region of the coils. The direction of the magnetic field is strictly perpendicular to the second direction component of the electric field in the reference plane, ensuring that each charged area corresponds to an orthogonal magnetic field environment. The coils and electrode units are arranged in a one-to-one correspondence, ensuring that the electric field charging area and the magnetic field action area completely overlap. The dust enters the magnetic field action range immediately after completing polarization, and the Lorentz force continues to act, maximizing the removal efficiency.

[0043] Through the above technical solution, firstly, both the electrodes and coils adopt a modular integrated structure, which facilitates production assembly and subsequent maintenance. The number of groups can be flexibly increased or decreased according to the equipment size to adapt to different specifications of cleaning equipment. Secondly, the gradual field strength can avoid the charge escape caused by the instantaneous polarization of dust, increase the surface charge of the moist dust, and thus enhance the driving effect of the subsequent Lorentz force. In this embodiment, the electrode plate 31 is a porous rectangular electrode plate, and the angle of inclination between each electrode plate 31 and the reference plane is 15°-22°. The distance between two adjacent electrode plate units along the second direction of the dust removal device is 150mm-200mm. The coil 41 is a rectangular electromagnetic coil.

[0044] In the above text, the porous rectangular electrode plate is a rectangular flat plate electrode with an array of uniform through holes on its surface. The core functions of the perforation design are twofold: first, it significantly reduces the air resistance when the airflow passes through the electrode plate, thereby reducing the power loss of the negative pressure fan and the noise of the airflow; second, the holes do not obstruct the spatial distribution of the electric field, and the electrode plate as a whole can still form a uniform planar electric field, without affecting the dust polarization effect.

[0045] A rectangular electromagnetic coil is an excitation coil in which the conductor is wound in a rectangular outline. When energized, it can generate a uniformly distributed planar magnetic field within the space enclosed by the rectangle. Compared to a circular coil, the effective magnetic field coverage area of ​​a rectangular coil is highly matched with the shape of the rectangular plate, eliminating blind spots caused by magnetic field attenuation at the corners, resulting in higher utilization of the field space. At the same time, the rectangular structure is easier to embed into a flat coupling cavity, making it suitable for the structural layout of thin cleaning equipment such as robotic vacuum cleaners.

[0046] The angle between the electrode and the reference plane directly determines the proportion of the two components of the electric field. The smaller the angle, the stronger the second-direction (traveling direction) component and the weaker the first-direction (normal) component of the electric field. Although the charging effect is good, the normal force for repelling dust is insufficient. The larger the angle, the stronger the normal component and the weaker the traveling component. The repelling force is large, but the dust polarization is insufficient. The 15°-22° range is the verified optimal range. At this angle, the two components of the electric field are balanced, which can ensure that the wet dust is fully polarized and charged, and provide a sufficient normal electric field to assist the initial detachment of dust, thus cooperating with the Lorentz force. Specifically, it can be set to 15°, 16°, 17°, 18°, 19°, 20°, 21°, or 22°.

[0047] The spacing between adjacent electrode units in an electrode group determines the smoothness and coverage of the gradient field. When the spacing is less than 150mm, the electric fields of adjacent electrodes overlap significantly, resulting in a disordered field strength distribution and the destruction of gradient characteristics. When the spacing is greater than 200mm, the field strength in the middle region between the two electrode groups is too low, creating a charging blind zone and uneven dust charge. A spacing of 150mm-200mm ensures a continuous gradient and minimal field strength fluctuations, allowing dust particles at any location within the coupling cavity to achieve stable polarization. Specifically, the spacing can be set to 150mm, 160mm, 170mm, 180mm, 190mm, or 200mm.

[0048] The above technical solution achieves several advantages. First, it maximizes the reduction of the device's vertical height while ensuring effective dust removal, thus adapting to the form factor requirements of slim cleaning equipment such as robotic vacuum cleaners. Second, the porous electrode plate reduces wind resistance, thereby decreasing the power requirement of the negative pressure fan and further reducing energy consumption and operating noise. Third, the rectangular coil's manufacturing process is mature and cost-effective, and its magnetic field distribution uniformity is superior to that of circular coils, resulting in a higher degree of compatibility with the rectangular electrode plate.

[0049] In this embodiment, the dust collection component 5 includes a negative pressure mechanism 51 and a dust collection drawer 52. The negative pressure mechanism 51 is connected to the dust collection chamber 13 and is used to generate negative pressure in the dust collection chamber 13. The dust collection drawer 52 can be pulled in and out of the dust collection chamber 13 and is used to receive dust entering the dust collection chamber 13.

[0050] In the above text, the negative pressure mechanism 51 is the power source for the dust collection process, forming a directional negative pressure airflow through the suction of the fan. The negative pressure mechanism 51 is only responsible for assisting in pulling the dust that has been driven away by the Lorentz force, without relying on high-speed airflow to peel off the surface dust. Therefore, the fan speed and power are much lower than those of traditional vacuum cleaners, resulting in a significant reduction in noise and energy consumption.

[0051] The dust collection drawer 52 is a detachable dust collection container embedded inside the dust collection chamber 13, serving as the terminal dust-bearing component in the entire dust removal process. When the dust in the dust collection drawer 52 accumulates to a certain amount, the user can pull the entire drawer out from the housing assembly, empty the dust inside, and push it back into its original position to complete maintenance without disassembling the entire machine or replacing consumables.

[0052] The above technical solution, by setting up a negative pressure mechanism and a dust collection drawer, firstly collects the dust in the dust collection chamber, and facilitates dust cleaning.

[0053] In this embodiment, the dust collection component 5 further includes a negative ion mechanism 53, which is connected to the dust collection chamber 13 and cooperates with the negative pressure airflow path. The negative ion mechanism 53 releases negative ions into the dust-laden airflow in the dust collection chamber 13 to neutralize the polarization charge on the surface of the dust, so that the dust settles in the dust collection chamber after losing its charge.

[0054] In the above text, the negative ion mechanism 53 generates and releases negative oxygen ions. The function of the negative ion mechanism 53 is to fully mix the negative ions with the dust-laden airflow, thereby canceling the polarization charge on the surface of the dust. After being polarized by the electric field, the dust carries a positive charge. The negative ion mechanism releases negatively charged air ions. After the two mix in the dust collection chamber 13, the positive charge on the surface of the dust is canceled out by the negative charge carried by the negative ions, thus eliminating its electrical properties.

[0055] By employing the above technical solution and a negative ion mechanism, firstly, the electrostatic repulsion between particles is eliminated, making it easier for dust to agglomerate and settle, thus preventing it from escaping with the airflow; secondly, it prevents charged particles from being carried in the exhaust air, thus preventing secondary electrostatic pollution.

[0056] In this embodiment, the dust collection chamber 13 is located at the rear end of the coupling chamber 12 along the moving direction of the dust removal device.

[0057] In the above text, the rear end of the moving direction refers to the tail side position of the dust removal device when it travels in the second direction. After the dust is lifted by the Lorentz force, it maintains its original relative motion state due to inertia and will move relative to the rear end of the device in the opposite direction of travel. Placing the dust collection chamber at this position allows for collection following the natural trajectory of the dust, eliminating the need for additional airflow guiding structures to change the airflow direction. This is an optimal layout design based on the principle of projectile motion.

[0058] When the dust removal device is working, the dust moves in the coupling chamber in a projectile-like motion: it maintains a relatively uniform speed equal to the device's traveling speed along the second direction, and undergoes uniform acceleration with an initial velocity of 0 along the first direction under the Lorentz force. According to the composition of motion, the dust's trajectory is a parabola extending forward and upward; with the device as the reference frame, the dust exhibits a relative trajectory of backward and upward motion. The dust collection chamber is positioned at the rear end of the coupling chamber in the direction of travel, exactly coinciding with the endpoint of the dust's relative motion: after being lifted to the upper part of the coupling chamber by the Lorentz force, the dust flows naturally along the direction of relative motion towards the dust collection chamber inlet at the rear end, where it can be directly sucked in and collected with the help of negative pressure airflow.

[0059] The above technical solution achieves several advantages. First, by following the projectile-like trajectory of dust, the collection path is minimized, wind pressure loss is reduced, and collection efficiency is high. Second, the rear layout conforms to the conventional structural design of household robotic vacuum cleaners, with the battery compartment and drive wheels positioned at the front and bottom, resulting in balanced weight distribution and good stability. In this embodiment, the power supply module 2 includes an energy storage component and an inverter control circuit. The inverter control circuit outputs two alternating electrical signals of the same frequency, which are respectively supplied to the electric field generating component 3 and the magnetic field generating component 4. The inverter control circuit can adjust the phase difference between the two alternating signals to match the timing of dust polarization charging and magnetic field driving, so as to ensure that the charged dust obtains a stable Lorentz force when entering the orthogonal magnetic field region, thereby regulating the driving effect of the dust moving into the coupling cavity.

[0060] In the above text, the energy storage component is the energy storage carrier in the power supply module, providing the original energy for the entire device.

[0061] The inverter control circuit is a power electronic circuit that converts DC power into AC power of a specified frequency and amplitude. It adopts a dual-output architecture, with one output powering the electric field unit and the other powering the magnetic field unit. Compared with a single-output inverter circuit, the dual-output architecture allows for independent adjustment of the phase and amplitude of the two outputs, achieving precise timing coordination between the electric and magnetic fields.

[0062] Phase difference refers to the waveform offset of two alternating signals of the same frequency on the time axis, usually expressed in degrees, with a value ranging from 0° to 360°. In this scheme, phase difference specifically refers to the phase offset between the alternating electric field signal and the alternating magnetic field signal. By adjusting this parameter, the relative positions of the peak electric field and the peak magnetic field in space can be controlled, thereby matching the time required for dust polarization, so that the dust enters the region of strongest magnetic field just when its charge reaches its peak, obtaining the maximum Lorentz driving force.

[0063] When the dust removal device is working, the DC power output from the energy storage component is converted by the inverter control circuit into two alternating voltages with the same frequency, which are supplied to the electric field and magnetic field units respectively. Same frequency is a prerequisite for ensuring stable orthogonal coupling of the electromagnetic fields: if the two signals have different frequencies, the relative phase of the electric field and magnetic field will continuously change, the magnitude and direction of the Lorentz force will fluctuate periodically, the dust movement trajectory will be disordered, and it will be unable to move stably into the coupling cavity.

[0064] Phase difference control principle: Dust particles require a certain amount of time to become fully polarized after entering the edge of the electric field; when the device moves at a constant speed, this time corresponds to a certain distance traveled. By adjusting the phase difference between the electric field signal and the magnetic field signal, the relative spatial positions of the "electric field peak" and the "magnetic field peak" can be controlled. When the phase difference increases, the peak position of the electric field shifts forward, the dust completes polarization earlier, and the charge reaches its peak when entering the magnetic field region, the Lorentz force is the largest, and the repulsion effect is the strongest. When the phase difference decreases, the peak position of the magnetic field shifts forward, and the dust enters the strong magnetic field region before it is fully polarized, resulting in a weaker Lorentz force and a reduced repulsion effect. For dust with different particle sizes, humidity, and adhesion, the optimal driving intensity can be matched by adjusting the phase difference to ensure the repulsion effect while avoiding excessive energy consumption.

[0065] Through the above technical solutions, firstly, the phase-adjustable design significantly improves the equipment's adaptability to different operating conditions, allowing for adjustments to the drive intensity for various dust states, such as floating dust, accumulated dust, and large particles. Secondly, the synchronous alternating power supply ensures the coupling stability of the electromagnetic field, avoiding Lorentz force fluctuations caused by frequency differences, making the dust movement trajectory more controllable. Thirdly, the integrated inverter circuit reduces the number of discrete components, resulting in a compact structure, high reliability, and suitability for the power supply needs of mobile equipment.

[0066] In this embodiment, the energy storage component is a lithium-ion battery pack that outputs a DC voltage of 12V-18V. The inverter control circuit converts the DC voltage output by the energy storage component into an alternating voltage output with a frequency of 50Hz-60Hz and a voltage of 30V-60V.

[0067] As mentioned above, lithium-ion battery packs are energy storage components composed of lithium-ion cells connected in series or parallel, and are currently the mainstream energy storage solution for home mobile electronic devices. 12V-18V is a common battery voltage range for small household cleaning equipment, and the output voltage of lithium-ion battery packs is, for example, 12V, 14.4V, 14.8V, etc.

[0068] 30V-60V falls within the extra-low voltage range for human safety. Even with exposed electrodes or equipment leaks, there is no risk of electric shock, meeting the electrical safety standards for household products. Simultaneously, this voltage range allows for a sufficient electric field strength between the electrodes, ensuring adequate polarization of moist dust, thus balancing safety and dust removal efficiency. If the voltage is too high, safety risks and electromagnetic radiation increase simultaneously; if the voltage is too low, the polarization effect is insufficient, resulting in low dust charge and inadequate removal force.

[0069] 50Hz-60Hz is the civilian power frequency, and the corresponding inverter circuit components are highly versatile, low-cost, and technologically mature. At the same time, the electromagnetic radiation of the power frequency alternating electric field is extremely low, which meets the electromagnetic compatibility standards for household appliances and will not interfere with the human body or other household electronic devices, making it suitable for long-term use in home settings.

[0070] The above technical solution offers several advantages. First, by using a lithium-ion battery pack within the specified voltage range, it is compatible with the mainstream lithium battery specifications for robotic vacuum cleaners on the market, allowing for the direct use of existing batteries and reducing R&D and production costs. Second, the output voltage is within the safe voltage range for the human body, ensuring high safety during device use; even in the event of leakage or damage, there will be no risk of electric shock. Third, the electromagnetic radiation from the power frequency alternating electric field is extremely low, meeting the electromagnetic compatibility standards for household appliances and will not interfere with the human body or other household appliances.

[0071] As the device moves as a whole, it simultaneously drives the orthogonal electromagnetic field within the coupling cavity 12 to move as a whole, causing the stationary dust and the electromagnetic field to form a stable relative displacement, thus providing the necessary relative motion conditions for the generation of the Lorentz force.

[0072] In this embodiment, a moving component is also included. The moving component is located on the side of the housing assembly 1 near the opening 121 and is used to drive the dust removal device to move along its second direction. The moving component includes a plurality of drive wheels 7. Each drive wheel 7 includes a drive motor 71, a drive shaft 72 and a moving wheel 73. The drive motor 71 drives the moving wheel 73 to rotate through the drive shaft 72, driving the dust removal device as a whole to move at a constant speed along its own second direction, so that the orthogonal electromagnetic field in the coupling cavity 12 and the stationary dust at the opening form a stable relative displacement, providing relative motion conditions for the generation of Lorentz force.

[0073] In the above text, the four drive wheels are arranged at the four corners of the housing assembly, driving the dust removal device to move.

[0074] The drive motor 71 is the power source, converting electrical energy into rotational mechanical energy. The drive shaft 72 is a transmission component connecting the drive motor 71 and the moving wheels 73, used to transmit torque and support the rotation of the wheels. The moving wheels 73 are the traveling components that directly contact the working surface and drive the machine body to move. This design adopts a universal wheel structure, which takes into account both straight-line and steering functions. The wheel surface is made of non-slip and silent material to reduce walking noise and wear on the ground. Multiple sets of wheels jointly support the machine body, ensuring smooth movement and maintaining a stable distance between the coupling cavity and the working surface.

[0075] The above technical solution uses a moving component to drive the dust removal device, thereby achieving automatic dust removal.

[0076] In this embodiment, the dust on the working surface is in a moist state, and a water film is formed on the surface of the dust. The water film can improve the dielectric properties of the dust, enhance the polarization effect of the gradient alternating electric field on the dust, increase the surface charge, and thus improve the driving effect of the Lorentz force.

[0077] In the above text, dielectric properties, also known as dielectric characteristics, are physical attributes that measure the ease with which a dielectric material can be polarized under the influence of an external electric field. The core parameter is the relative permittivity. The higher the permittivity, the stronger the polarization of the material under the same electric field, and the more polarization charge can accumulate on the surface.

[0078] Through the above technical solution, the dust on the working surface is in a moist state. First, the water film enhances the charging effect, achieving stronger repulsion force without increasing the electric field voltage, thus balancing safety and dust removal efficiency. Second, the moist state makes the dust less likely to fly, preventing secondary dust dispersion during the repulsion process and resulting in a better cleaning experience. Third, it is suitable for cleaning scenarios involving slightly damp mopping, and can be combined with existing mopping processes to achieve integrated cleaning of "wetting-electromagnetic dust removal-collection".

[0079] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A dust removal device driven by an electromagnetically charged Hall effect, characterized in that, Includes housing components, power supply module, electric field generating component, magnetic field generating component, and dust collection component; The housing assembly encloses to form a battery compartment, a coupling cavity, and a dust collection cavity. The coupling cavity has an open end along the first direction of the dust removal device, and the dust collection cavity is in communication with the interior of the coupling cavity. The power supply module is installed inside the battery compartment and is used to provide DC and AC power to the dust removal device. The electric field generating component is installed in the coupling cavity to form a gradient alternating electric field inside the coupling cavity, causing the dust at the opening to undergo surface polarization and accumulate surface charge. The magnetic field generating component is installed in the coupling cavity to form a gradient alternating magnetic field inside the coupling cavity. The gradient alternating magnetic field and the gradient alternating electric field are orthogonally coupled in space to form the Hall effect field. The dust collection assembly is used to drive the dust in the coupling cavity to be collected into the dust collection cavity; When the dust removal device moves along its second direction, the charged dust at the opening forms relative motion with the gradient alternating electric field and gradient alternating magnetic field. Under the action of the Lorentz force, it moves into the coupling cavity along the first direction of the dust removal device. The dust in the coupling cavity enters the dust collection cavity under the drive of the dust collection component. The first and second directions of the dust removal device are perpendicular to each other.

2. The dust removal device according to claim 1, characterized in that, The electric field generating component includes multiple electrode units arranged sequentially along the second direction of the dust removal device; Each of the electrode plate units includes two electrode plates that are spaced apart and symmetrically arranged along a second direction of the dust removal device; Each of the electrode plates extends along the third direction of the dust removal device, and the plate surface forms an acute angle with the reference plane formed by the second direction and the third direction of the dust removal device. The distance between the ends of the two electrode plates in the same electrode plate unit facing the opening is greater than the distance between the ends facing away from the opening. The first direction, the second direction and the third direction of the dust removal device are perpendicular to each other. The multiple electrode units enable the main direction of the electric field to simultaneously have components along the first direction of the dust removal device and components along the second direction of the dust removal device, forming a gradient alternating electric field with gradually changing field strength along the first direction and the second direction of the dust removal device. The magnetic field generating component includes multiple coil units, and each coil unit corresponds to one of the pole plate units. Each coil unit includes two coils disposed on both sides of the corresponding electrode unit along the third direction of the dust removal device; The magnetic field generated by the coil unit extends along the third direction of the dust removal device and remains orthogonal to the component of the electric field along the second direction of the dust removal device.

3. The dust removal device according to claim 2, characterized in that, The electrode plate is a porous rectangular electrode plate, and the angle between each electrode plate and the first direction is 15°-22°. The distance between two adjacent electrode plate units along the second direction of the dust removal device is 150mm-200mm. The coil is a rectangular electromagnetic coil.

4. The dust removal device according to claim 1, characterized in that, The dust collection assembly includes a negative pressure mechanism and a dust collection drawer. The negative pressure mechanism is connected to the dust collection chamber and is used to create a negative pressure in the dust collection chamber. The dust collection drawer can be pulled in and out of the dust collection chamber and is used to carry the dust entering the dust collection chamber.

5. The dust removal device according to claim 4, characterized in that, The dust collection assembly also includes a negative ion mechanism, which is used to release negative ions to the charged dust at the entrance of the dust collection chamber, neutralize the polarization charge on the surface of the dust, and cause the dust to settle into the dust collection chamber after losing its charge.

6. The dust removal device according to claim 1, characterized in that, The dust collection chamber is located at the rear end of the coupling chamber along the moving direction of the dust removal device.

7. The dust removal device according to claim 1, characterized in that, The power supply module includes an energy storage component and an inverter control circuit. The inverter control circuit outputs two alternating electrical signals of the same frequency, which are respectively supplied to the electric field generating component and the magnetic field generating component. The inverter control circuit can adjust the phase difference between the two alternating signals to match the timing of dust polarization charging and magnetic field driving, so as to ensure that charged dust obtains a stable Lorentz force when it enters the orthogonal magnetic field region. The energy storage component is a lithium-ion battery pack that outputs a DC voltage of 12V-18V. The inverter control circuit converts the DC power output from the energy storage component into an alternating voltage output with a frequency of 50Hz-60Hz and a voltage of 30V-60V.

8. The dust removal device according to claim 1, characterized in that, It also includes a moving component, which is installed on the side of the housing assembly near the opening. The moving component includes multiple drive wheels, each of which includes a drive motor, a drive shaft, and a moving wheel. The drive motor drives the moving wheel to rotate through the drive shaft, thereby driving the dust removal device as a whole to move at a constant speed along its own second direction.

9. A dust removal method driven by electromagnetically charged Hall effect, characterized in that, The dust removal operation using the dust removal device according to any one of claims 1 to 8 includes the following steps: S1. Place the dust removal device on the working surface, with the opening of the coupling cavity facing the working surface; S2. The electric field generating component generates a gradient alternating electric field in the coupling cavity. The gradient alternating electric field acts on the dust on the working surface, causing the dust surface to form a surface potential, resulting in charge accumulation and polarization. The magnetic field generating component synchronously generates a gradient alternating magnetic field, which is orthogonally coupled with the gradient alternating electric field in space to form the Hall effect field. S3. The dust removal device moves at a constant speed along the working surface. The gradient alternating electric field and gradient alternating magnetic field in the coupling cavity generate relative displacement with respect to the stationary dust on the working surface. The charged dust cuts the magnetic field lines with the relative motion and undergoes uniform acceleration along the first direction of the dust removal device under the action of the Lorentz force. Combined with the relative uniform motion along the second direction of the dust removal device, it forms a projectile-like trajectory and moves away from the working surface into the coupling cavity. S4. The dust collection component drives the dust into the dust collection chamber to complete the dust removal operation on the working surface.

10. The electromagnetically charged Hall-driven dust removal method according to claim 9, characterized in that, The dust on the work surface is in a moist state, and a water film forms on the surface of the dust to improve its dielectric properties.

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