Graphite gill purifier

Abstract

A purification device for intercepting, adsorbing and decomposing pollutants in air flow by high-voltage electrostatic field between graphite gill and electrostatic net disc. The graphite gill is parallel and uniformly distributed strip-shaped gill plate in air inlet section, and a plurality of equal-length graphite gill wires are uniformly fixed on one side of the strip-shaped gill plate. The graphite fibers at the end of the graphite gill wire are extended to the electrostatic net disc with equal electric field spacing. The electrostatic net disc is a frame air inlet provided with a plurality of layers of parallel insulated graphite wire net strips. The graphite gill purification device is provided with uniformly distributed steam nozzles at the lower part of the air inlet section, which are sealed connected with a steam generator. An ultraviolet lamp is arranged at the center position of the graphite gill purification device. The graphite wires of the electrostatic net disc are connected in series with a normally closed temperature control switch and a power supply. The graphite wires can be heated by power supply to remove the pollutants intercepted by the graphite wires, and restore the adsorption capacity and conductivity of the graphite gill wires and the electrostatic net disc.

Description

Technical Field

[0001] This invention relates to a purification device installed at the airflow cross-section, where polluted airflow passes through a high-voltage electrostatic field formed by graphite gills and an electrostatic mesh disk, intercepting, adsorbing, and decomposing pollutants in the airflow. It is equipped with steam nozzles and ultraviolet lamps to remove pollutants intercepted by the graphite gills, repeatedly restoring the adsorption capacity and conductivity of the graphite gills and electrostatic mesh disk. Background Technology

[0002] In both supplying fresh air to indoor environments and purifying polluted air, it is necessary to purify the airflow of pollutants such as dust, VOCs, bacteria, viruses, oil fumes, particulate matter, and non-methane hydrocarbons. Currently, various air purification technologies are used, but existing oil fume purification technologies have encountered developmental bottlenecks due to their inability to effectively remove VOCs from polluted airflows or their excessive air resistance, leading to secondary pollution. Especially in environments with high requirements for fresh air purification, where effective removal of VOCs and extremely fine particles such as bacteria and viruses is necessary, most systems employ multi-stage filtration, resulting in very high air resistance, high energy consumption, and high maintenance and costs.

[0003] Adsorption is considered a reasonable and effective method for removing fumes, dust, and VOCs from polluted airflows. In the purification of fumes from restaurant kitchens, activated carbon adsorption and high-voltage electrostatic precipitators are used to purify fumes, particulate matter, and VOCs from the airflow. However, various methods using activated carbon suffer from high wind resistance, high energy consumption, and the activated carbon, covered in grease, requires frequent replacement, resulting in high costs and non-reusability, causing secondary pollution. High-voltage electrostatic precipitators, with their large electrode gaps and high voltage, cannot achieve sufficiently high airflow rates and are still not effective at removing VOCs and bacteria / viruses. High-voltage electrostatic precipitators require frequent cleaning of their plates due to grease buildup, which significantly reduces purification efficiency. Furthermore, activated carbon and high-voltage electrostatic precipitators are bulky, requiring extensive maintenance. These devices are often installed at the end of the exhaust system, in the fume hood, or at the front of the main duct, where grease buildup poses a fire hazard, necessitating regular cleaning and increasing maintenance work and costs. Existing purification technologies, such as dynamic rotating mesh screens, filter purification, and high-voltage electrostatic precipitators, mostly employ fixed-structure passive purification techniques, relying on the passive collision of the purification structure. Due to structural limitations, such as electric field distance, wind speed, and size, there are inherent limitations. Therefore, existing purification technologies have encountered a development bottleneck. Summary of the Invention

[0004] To overcome the shortcomings of existing purification technologies, this invention aims to provide a graphite gill purification device made of graphite wires, based on the principle and structure of "fish gills." Installed within the purification channel of a ventilation duct or gas collection hood, the polluted airflow passes through a high-voltage electrostatic field between the graphite gills and the electrostatic mesh. The oscillating graphite gill wires are always uniformly distributed within the electric field. The adsorption effect of the graphite wires and the high-voltage electrostatic adsorption effect cause the graphite gill wires to actively attract pollutant particles. The graphite gill wires are always uniformly distributed across the airflow cross-section with very small gaps, greatly increasing the efficiency of intercepting and adsorbing oil fumes, dust, VOCs, and bacteria / viruses in the polluted airflow. The electric field strength exceeds the ionization field strength of the gas, generating ozone and plasma that oxidize the pollutant particles, dissolving them and improving purification efficiency.

[0005] Graphite fiber, as a high-performance carbon material, possesses excellent properties such as lower density, higher specific strength, higher specific modulus, lower coefficient of thermal expansion, better thermal and electrical conductivity, high-temperature resistance, flame retardancy, corrosion resistance, fatigue resistance, wear resistance, ease of cleaning and maintenance, good flexibility, convenient winding, and ease of processing compared to ordinary metal wires. Its unique three-dimensional ordered graphite layered structure gives it excellent mechanical, electrical, and adsorption properties, exhibiting hydrophobic and oleophilic characteristics, effectively adsorbing pollutants such as dust, VOCs, bacteria, viruses, oil fumes, and particulate matter. Graphite gill purification devices can be applied in air conditioning fresh air purification, industrial dust removal, and oil fume purification, showing broad application prospects. They can also be installed at the air vents of air conditioners and other fresh air supply systems to purify dust, VOCs, bacteria, viruses, and outdoor moisture in the fresh air, control the generation of small amounts of ozone in the high-voltage electrostatic field, and kill bacteria growing in the fresh air ducts.

[0006] The graphite wire can also be cleaned using steam heating, ultraviolet light cleaning, and electric heating to remove the dirt adsorbed on it. Regularly heating it to 290-300℃ can remove the condensed oil and dust from the graphite wire, restore its adsorption capacity and conductivity, and allow for repeated recycling without causing secondary pollution.

[0007] The graphite gill purification device consists of a high-voltage electrostatic field between graphite gills and electrostatic mesh discs. Based on the internal structure of the purification channel, the device is configured as a purification system with interconnected inlet and outlet graphite gills. Both purification chambers are formed into a barrel shape by graphite gills and electrostatic mesh discs. The inlet graphite gill has a bottom with a drain hole leading to an oil collection tank via a drain pipe. Both the inlet and outlet graphite gills have barrel-shaped graphite gills, each with identical upper and lower annular plates fixed to a central partition by insulating ceramic pillars. The central partition provides a flow area between the inlet graphite gill and the four electrostatic mesh discs on its four sides, connecting to the outlet graphite gill. The outlet graphite gill has a chamber cover. The graphite gills and electrostatic mesh discs of both the inlet and outlet graphite gills are arranged according to the airflow direction. Airflow enters through the graphite gills, with the gill lines following the airflow direction, and the airflow passes perpendicularly through the electrostatic mesh discs. All airflow must pass through the graphite gills of the inlet and outlet airflow gills and the electrostatic mesh for purification.

[0008] The graphite gills mimic the structure of fish gills, with gill filaments arranged along the water flow direction. Metal plates are used to create strip-shaped gill plates, and graphite filaments are used to create the gill lines. A waist-shaped opening is evenly spaced on the air-inlet side of the strip-shaped gill plate, and multiple graphite gill lines of equal length are fixedly wound inside the opening. The strip-shaped gill plates are evenly fixed between the upper and lower annular fixing plates on the air-inlet side of the graphite gill. In other words, the strip-shaped gill plates are evenly fixed on the outer edge of the air-inlet graphite gill, and on the inner edge of the air-outlet graphite gill. The graphite gills are connected to the positive terminal of a high-voltage electrostatic power supply, and the electrostatic mesh is connected to the negative terminal of the high-voltage electrostatic power supply. The graphite gill lines extend towards the electrostatic mesh, leaving equal electric field gaps. Multiple graphite gill filaments of equal length, fixed to the gill plates of the graphite gills, are dispersed at their ends. Under the influence of the high-voltage electric field of the graphite gills and the graphite gill filament network, the repulsive force of like charges and the attractive force of unlike charges cause each bundle of dispersed graphite gill filament fibers to radiate outwards towards the electrostatic mesh. The repulsive force of opposite charges in the high-voltage electrostatic field ensures that each graphite gill filament maintains an equal distance from the tips of other graphite gill filament fibers. When local airflow is disturbed, the graphite gill filament fibers also oscillate with the airflow. Due to the repulsive and attractive forces generated by the electric field, the oscillating graphite gill filaments and their tips automatically maintain a uniform distribution with very small spacing in the flow cross-section. When particles or pollutant particles with different charges approach each other, the mutual attraction pulls the graphite gill filaments and their tips closer together, dynamically adsorbing and intercepting them, thus changing the passive collision adsorption method. Due to the tip discharge effect of high-voltage electrostatics, the tips of graphite gill fibers become concentrated discharge areas, more effectively adsorbing or charging pollutants such as dust, VOCs, bacteria, viruses, fumes, and particulate matter, which are then adsorbed by the electrostatic field of the electrostatic mesh, purifying the airflow. When local airflow changes due to disturbances, the graphite gills also oscillate with the flow, slowing down the airflow velocity and widening the distance between the graphite gill fiber tips. When the airflow accelerates, the graphite fibers in the airflow experience lateral static pressure, narrowing the distance between the graphite gill fiber tips and increasing the purification rate of airflow pollutants. Due to the repulsive effect of the same electric field, the dynamic graphite gill fiber tips maintain a uniform distribution throughout the flow cross-section, with a very small and automatic uniform distribution. When particles with different charges approach each other, the attraction also pulls the graphite gill fiber tips closer together for adsorption. The small-range oscillations caused by airflow disturbances and tip contamination further increase the purification rate of airflow pollutants. The uniform and small spacing of the dynamic graphite gill fibers reduces electrostatic voltage, saves energy, and increases safety and reliability. Compared with existing high-voltage electrostatic purifier technology, it eliminates the drawbacks of high voltage between plates, large gaps, easy breakdown of electric field, and reduced purification rate when the airflow velocity is slightly fast.

[0009] The electrostatic mesh disc consists of a rectangular right-angled frame with multiple layers of graphite mesh lines at the airflow openings. The same layer of mesh lines is arranged parallel to each other on the same flow cross-section. The graphite mesh lines of the multiple layers maintain a flow distance, and the parallel, interlaced graphite lines increase the probability of pollutant collisions. Polluted airflow passes through the strip-shaped gill plates and radial graphite gill lines. Pollutant particles are adsorbed onto the graphite gill lines or charged by their electric field and flow towards the electrostatic mesh disc's electric field. In the electrostatic field of the multi-layered mesh lines, the adsorption effect of the graphite mesh and the high-voltage electrostatic field make it difficult for even extremely small particles such as VOCs, bacteria, and viruses to pass through the dense multi-layered mesh lines; they are adsorbed onto the graphite mesh lines of the electrostatic mesh disc. All polluted airflow passes through the high-voltage electrostatic field of the graphite gills and the electrostatic mesh disc. The high-voltage electrostatic field strength is controlled to exceed the ionization field strength of the gas, generating a small amount of ozone. This ozone reacts with the pollutant particles, causing oxidation and decomposition of the particulate matter.

[0010] The electrostatic mesh disk of the exhaust graphite gill is located around the barrel-shaped graphite gill. Airflow moves from the inlet graphite gill to the outlet graphite gill, increasing the cross-sectional area and rapidly decreasing the airflow velocity. The airflow flows smoothly and slowly through the high-voltage electrostatic field of the graphite gill and the electrostatic mesh disk. Tiny particles in the airflow become charged in the electrostatic field of the graphite mesh and are intercepted or adsorbed by the high-voltage electrostatic field of the graphite gills and the electrostatic mesh disk. The graphite gill purification device can be installed in fresh air ducts or air boxes to purify air, or in fume collection hoods to purify oil fumes. Through the fine purification process of the double-layered graphite gills and electrostatic mesh disk, the purification rate is greatly improved.

[0011] Multiple steam nozzles with spray angles directed towards the graphite gills are evenly distributed outside the air inlet of the barrel-shaped graphite gills. These nozzles are sealed and fixedly connected to the steam pipe of the instantaneous steam generator. The water supply pipe of the steam generator is fixedly connected to the main water pipe via a regulating water valve and a solenoid valve. The cleaning process is initiated by an intelligent programmable controller. The variable frequency fan, the electric air valve at the air inlet, and the temperature control switch are turned off. The power to the steam generator is turned on, and the solenoid valve of the water supply pipe is opened. The water flow regulated by the regulating water valve enters the instantaneous steam generator and immediately turns into high-temperature steam. This high-temperature steam is sprayed onto the graphite gills through the steam pipe nozzles, heating and cleaning the graphite gills and the graphite mesh lines of the electrostatic mesh. The purification channel is filled with high-temperature steam, and the high-temperature steam and condensed hot water remove contaminants adhering to the graphite lines. The cleaned stains and condensate flow to the drain port at the bottom of the graphite gill cavity. A drain pipe is located below the drain port, flowing to the oil collection tank below the gas collection hood, and finally, the waste liquid is discharged through the drain valve.

[0012] A normally open temperature control switch is installed on the electric air valve at the air inlet. When high-temperature airflow passes through the air inlet, the electric air valve automatically closes. The electric air valve, temperature control switch, electrostatic mesh, high-voltage electrostatic power supply, power supply and control circuit of the graphite gill purification device, and the exhaust variable frequency fan are all connected to the transmission circuit of the intelligent programmable controller to form an intelligent smoke exhaust and ventilation control system. The purification device can be manually controlled or controlled by the intelligent programmable controller to control the electric air valve, graphite gill, and electrostatic mesh of each purification channel for air purification. The steam cleaning switch, ultraviolet lamp, and graphite wire electric heating switch of the purification channel can also be controlled separately to periodically heat and clean the graphite wire for decontamination. The heating time and cycle are controlled according to the type and volume of flue gas being treated. The graphite wire has high-temperature resistance and flame retardant properties and can withstand moderate high temperatures. The graphite wire's adsorption capacity and conductivity are restored, allowing for reuse without causing secondary pollution.

[0013] The technical solution adopted by the graphite gill purification device of the present invention is as follows: The graphite gill purification device consists of a high-voltage electrostatic field between graphite gills and electrostatic mesh disks. Each set of graphite gill purification devices has a purification chamber with an inlet graphite gill and an outlet graphite gill connected according to the internal structure of the purification channel. Both purification chambers are surrounded by graphite gills and electrostatic mesh disks in a barrel shape. The bottom of the inlet graphite gill has a drain port that leads to the oil receiving tank via a drain pipe. The barrel-shaped graphite gills of the inlet and outlet graphite gills are fixed to the middle partition by insulating ceramic pillars. The middle partition has a flow area between the inlet graphite gill and the four electrostatic mesh disks inside, and is connected to the outlet graphite gill. The connection between the middle partition and the rear upright plate is provided with a drain port that connects to a gravity flow pipe, and the drain pipe leads to the oil receiving tank at the bottom of the gas collection hood. The four electrostatic mesh disks of the inlet graphite gill are located inside the graphite gill, and the four electrostatic mesh disks of the outlet graphite gill are located outside the outlet graphite gill. The straight sections of the graphite gill and the electrostatic mesh disk are parallel to each other, with equal high-voltage electrostatic field spacing. The graphite gill purification device can be designed as a straight plate, arc, or ring shape according to the structural environment requirements. Its characteristic is that: parallel strip gill plates are fixed at the cross-section of the air inlet, and multiple bundles of graphite gill lines of equal length are evenly fixed on the strip gill plates, equidistant from the electrostatic mesh disk, and respectively connected to the positive and negative electrodes of the high-voltage electrostatic field.

[0014] To improve the purification rate, the graphite gill purification device is designed as a double-layered purification device with interconnected inlet and outlet graphite gills. To increase the purification flow cross-sectional area, the graphite gills are designed as annular barrels, allowing airflow from all sides. The annular inlet graphite gill has upper and lower annular plates. The upper annular plate is fixed to the lower part of the central partition via evenly distributed insulating ceramic pillars and insulating plates. The lower annular plate is connected to the bottom plate of the cavity via evenly distributed insulating ceramic pillars and insulating plates. The bottom of the cavity has a drain hole sloping towards the center, leading to an oil collection tank via a drain pipe. The four electrostatic mesh disks of the inlet graphite gill are set inside the upper and lower annular plates, parallel to the straight section of the inlet graphite gill, and are fixedly sealed to the central partition and the bottom plate of the cavity with fixing screws to maintain the distance of the electric field. A rectangular air vent is left on the central partition between the four electrostatic mesh disks, connecting to the outlet graphite gill. The exhaust graphite gill has upper and lower annular plates. The lower annular plate is fixed to the upper part of the central partition by evenly distributed insulating ceramic pillars and insulating plates. Four electrostatic mesh discs are arranged around the graphite gill. A cavity cover is provided at the top, which is sealed and fixed to the four electrostatic mesh discs. The upper annular plate is fixedly connected to the cavity cover plate by evenly distributed insulating ceramic pillars and insulating plates. The electrostatic mesh discs of the exhaust graphite gill are sealed and fixed to the cavity cover plate and the central partition by fixing screws. The graphite gills and electrostatic mesh discs of the inlet and outlet graphite gills are arranged according to the direction of airflow. The graphite gill lines of the graphite gills follow the direction of airflow, allowing airflow to enter through the graphite gills and pass perpendicularly through the electrostatic mesh discs. All airflow enters through the inlet graphite gill and exits through the outlet graphite gill, undergoing purification by the graphite gills and electrostatic mesh discs.

[0015] Between the upper and lower annular plates of the inlet and outlet graphite gills, graphite gill strips are evenly fixed on the inlet side. These strips mimic the structure of fish gills, with gill filaments arranged along the water flow direction. Metal plates are used for the strips, and graphite filaments are used for the gill lines. Symmetrical waist-shaped holes are evenly arranged on the inlet side between the upper and lower annular plates of the inlet graphite gill. Axle plates, equal in height to the thickness of the annular plates, are inserted into the waist-shaped holes of the upper and lower annular plates for fixation. Waist-shaped openings are evenly spaced on the inlet side of the strips, and multiple graphite gill lines of equal length are wound inside these openings. The graphite gill lines are clamped and fixed on the inlet side of the strips using clamps with an opening equal to the distance between the upper and lower annular plates. The strips are evenly fixed to the outer edge of the inlet side of the graphite gill between the upper and lower annular plates. The opening clamp is made of a metal strip with one side having an arc. The diameter of the arc is larger than the thickness of the strip gill plate plus the diameter of the graphite wire. The length of both sides of the opening clamp exceeds the length of the waist-shaped opening of the strip gill plate. It has an outward-curving arc to facilitate the insertion of the strip gill plate into the opening clamp to clamp and fix the graphite gill wire. Each end of the strip gill plate and the opening clamp has a pin hole. The opening clamp clamps the strip gill plate and inserts a connecting wire for fixation. The parallel strip gill plates, evenly distributed between the upper and lower annular plates, are equidistant from the edge of the annular plates. Multiple graphite gill wires of equal length are wound around the strip gill plates and fixed to the graphite gill strip gill plates. Under the action of the high-voltage electric field of the graphite gill and graphite gill wire mesh, the repulsive force of like charges and the attractive force of unlike charges cause each bundle of multiple scattered graphite gill wire fibers to radiate. The graphite gill wires of the strip gill plate extend towards the electrostatic mesh disk at equal intervals. The upper annular plate is fixed to the lower part of the middle partition via insulating ceramic pillars and insulating plates, and the lower annular plate is fixedly connected to the bottom of the cavity via insulating ceramic pillars and insulating plates.

[0016] The inner edge of the air inlet of the upper and lower annular plates of the exhaust graphite gill has evenly distributed, symmetrical waist-shaped holes. The shaft plates at both ends of the air inlet side of the strip-shaped gill plate, with a height equal to the thickness of the annular plate, are inserted into the waist-shaped holes of the upper and lower annular plates for fixation. The air inlet side of the strip-shaped gill plate has evenly distributed waist-shaped openings, into which multiple graphite gill lines of equal length are wound. The graphite lines are clamped and fixed on the air inlet side of the strip-shaped gill plate using clamps with an opening equal to the distance between the upper and lower annular plates. The strip-shaped gill plates are evenly fixed between the upper and lower annular plates on the inner edge of the air inlet side of the graphite gill. The clamps secure the strip-shaped gill plates and graphite gill lines, and a connecting wire is inserted for further fixation. Because the air outlet direction is outward, the strip-shaped gill plates and graphite gill lines flow outward with the airflow and into the upper part of the central partition of the purification channel. The lower annular plate of the exhaust graphite gill is fixed to the upper part of the central partition via insulating ceramic pillars and insulating plates, while the upper annular plate is fixedly connected to the cavity cover of the exhaust graphite gill via insulating ceramic pillars and insulating plates. The airflow directions of the inlet and outlet graphite gills are different. Both the inlet and outlet graphite gills are connected to the positive terminal of the high-voltage electrostatic discharge device, and the corresponding electrostatic mesh is connected to the negative terminal of the high-voltage electrostatic power supply. The high-voltage electrostatic discharge device causes the graphite gill lines to extend towards the electrostatic mesh with equal electric field gaps.

[0017] Multiple bundles of graphite gill filaments of equal length, under the influence of the graphite gills and the high-voltage electric field of the electrostatic mesh disk, radiate outwards from each bundle, all extending towards the electrostatic mesh disk. The repulsive force of like charges in the high-voltage electrostatic field ensures that each graphite gill filament maintains an equal distance from the tips of other graphite gill filaments. Due to the point discharge effect of the high-voltage electrostatic field, the tips of the graphite gill filament fibers become concentrated discharge areas, more effectively adsorbing or charging pollutant particles such as dust, VOCs, bacteria, viruses, fumes, and particulate matter, which are then adsorbed by the electric field of the electrostatic mesh disk, purifying the airflow. When local airflow disturbances occur, the graphite gill filaments also oscillate with the flow, the airflow velocity slows down, and the distance between the tips of the graphite gill filament fibers increases. When the airflow accelerates, the graphite filaments in the airflow experience lateral static pressure, the distance between the tips of the graphite gill filament fibers decreases, and the purification rate of airflow pollutants increases. Due to the repulsive effect of the same electric field, the dynamic graphite gill fiber tips maintain a uniform distribution with a very small spacing throughout the flow cross-section. This automatic and uniform distribution also allows for attraction between particles with different charges, causing the graphite gill fiber tips to pull together and adhere. Furthermore, the graphite gills exhibit small-range oscillations caused by airflow disturbances and tip contamination, altering the passive collision adsorption method and increasing the purification rate of airflow pollutants. The uniform and small spacing of the dynamic graphite gills reduces electrostatic voltage, saving energy and increasing safety and reliability. Compared to existing high-voltage electrostatic purifier technology, this eliminates the drawbacks of high voltage between plates, large gaps, easy electric field breakdown, and reduced purification efficiency even with slightly faster airflow velocities.

[0018] The electrostatic mesh disc consists of a rectangular frame with multiple layers of graphite mesh lines at the airflow openings. The graphite mesh lines of the same layer are arranged parallel to each other on the same flow cross-section. The graphite mesh lines of the multiple layers maintain a flow distance, and the graphite lines of the multiple layers are parallel but staggered. The graphite lines of each layer are parallel to those of adjacent layers, offset by half a line spacing, increasing the probability of pollutant collision. Polluted airflow passes through the strip-shaped gill plates and radial graphite gill lines. Pollutant particles are adsorbed onto the graphite gill lines or charged by the electric field of the graphite gill lines and flow towards the electric field of the electrostatic mesh disc. In the electrostatic field of the multiple layers of mesh lines, the adsorption effect of the graphite mesh lines and the adsorption force of the high-voltage electrostatic field make it difficult for even extremely small particles such as VOCs, bacteria, and viruses to pass through the dense multiple layers of mesh lines; they are adsorbed onto the graphite mesh of the electrostatic mesh disc. All pollutant airflow passes through the high-voltage electrostatic field of the graphite gills and electrostatic mesh. The electric field strength exceeds the ionization field strength of the gas, causing the gas to ionize and produce ozone and plasma, which react with the pollutant particles to oxidize and decompose the pollutant particles.

[0019] The electrostatic mesh disk of the exhaust graphite gill is located around the barrel-shaped graphite gill. Airflow moves from the inlet graphite gill to the outlet graphite gill, increasing the cross-sectional area and rapidly decreasing the airflow velocity. The airflow flows smoothly and slowly through the high-voltage electrostatic field of the graphite gill and the electrostatic mesh disk. Tiny particles in the airflow are intercepted or adsorbed by the electrostatic field of the graphite gill and the electrostatic mesh disk. The graphite gill purification device can be installed in fresh air ducts or air boxes to purify air, or it can be installed in a fume collection hood to purify oil fumes. Through the fine purification process of the double-layered graphite gill and electrostatic mesh disk, the purification rate is greatly improved.

[0020] When the graphite gill purification device is installed in a bellows or duct, a central baffle is installed in the duct to seal the flow direction. At the center of the central baffle, the inlet and outlet graphite gills of the purification device are fixed. Airflow channels are provided between the purification device and the four wall panels to ensure smooth airflow and reduce flow resistance.

[0021] When installed within a gas collection hood, the graphite gill purification device is designed in conjunction with the internal structure of the hood. The gas collection hood features a hood panel, outside which is a gas storage hood. This storage hood, extending forward from the hood, consists of a sloping top plate, the hood panel, and surrounding panels. The storage space of this hood extends throughout the hood, allowing for temporary storage of rising, escaping steam during sudden large-scale steam generation. This steam is then slowly drawn into the purification channel within the hood through negative pressure suction ports on the hood panel, preventing overflow. The lower part of the storage hood's surrounding panels and the side panels of the hood are equipped with U-shaped guide channels that connect to the oil receiving groove at the bottom of the hood. A power control box is located on the front panel of the forward-extending storage hood. This box contains an intelligent programmable controller, a high-voltage electrostatic power supply, and a power source. The power control box panel includes control switches such as a steam cleaning switch and an electric heating switch, as well as a system operation display screen.

[0022] The fume hood is equipped with a three-section panel: an upper inspection plate, a lower inspection plate, and an electric damper slanted panel. The fume hood panel is fixedly connected to the side panels of the fume hood. The lower electric damper slanted panel is parallel to the U-shaped guide groove of the side panel, leaving space for cleaning the U-shaped guide groove. The lower part of the electric damper slanted panel is inserted into an oil collection groove and connects to the rear upright plate. The width of the upper and lower inspection plates and the electric damper slanted panel is designed in conjunction with the length of the fume hood, generally equal to the width of two purification channels. The height of the upper and lower inspection plates corresponds to the height of the exhaust and intake graphite gills, facilitating installation and maintenance. They are fixedly connected at the angle of the electric damper slanted panel. The upper panel is inserted into the lower panel, leaving a small gap at the connection point, which is secured with screws. Condensate from the fume hood panel flows into the connection gap along the panel, preventing dripping.

[0023] For each piece of equipment that generates flue gas, a purification channel is installed inside the gas collection hood. An electric damper and a purification channel vent are located on the slanted panel of the gas collection hood facing the flue gas source. The electric damper is mounted on the slanted panel facing forward via a flange. A normally open temperature control switch connected to the power supply is installed in the center of the electric damper inlet. Each purification channel is equipped with a partition, which is longitudinally fixed to the gas collection hood panel and the rear upright of the gas collection hood, with its lower part abutting against the slanted panel of the electric damper and its upper part fixedly sealed to the transverse central partition. The central partition is transversely sealed to the two purification channel partitions, the gas collection hood panel, and the rear upright of the gas collection hood via fixing angle strips and screws, dividing the purification channel and graphite gill purification device of the gas collection hood into upper and lower parts. The graphite gill purification device is installed in the center of the central partition within the purification channel. Airflow channels are provided between the graphite gill purification device and the four walls of the purification channel to ensure smooth airflow and reduce flow resistance. The graphite gill purification device is divided into an air inlet graphite gill and an air outlet graphite gill. The air inlet graphite gill is fixed at the lower part of the middle partition, and the air outlet graphite gill is fixed at the upper part of the middle partition. The middle partition has ventilation holes that connect the two graphite gill purification chambers.

[0024] The upper part of the central partition is a connecting space for multiple purification channels, increasing the flow cross-sectional area and forming a smoke collection box. The top plate of the smoke collection hood is directly connected to the exhaust duct. Each purification channel is equipped with an electric air valve. The airflow passes through the inlet and outlet graphite gills of the graphite gill purification device in the purification channel, the smoke collection box, and the exhaust duct to the smoke exhaust fan.

[0025] A negative pressure air intake is located on the upper part of the lower inspection plate in the middle of the purification channel, with a short negative pressure pipe connected to the purification channel. A one-way valve is installed inside the short negative pressure pipe. Under the negative pressure of the fan, the one-way valve opens; when the fan is turned off, the one-way valve closes, preventing steam from escaping during steam cleaning of the graphite gills inside the steam collection hood. The steam storage hood has a storage space the same length as the hood itself, capable of accommodating all the escaped steam. The negative pressure air intake is located inside the storage hood opening; the negative pressure of the fan intercepts and absorbs the escaped steam through the short negative pressure pipe. Multiple negative pressure air intakes have a very small cross-sectional area, only a fraction of the flow cross-sectional area of ​​the purification channel, and will not affect the exhaust effect of the electric air valve vents. The inhaled steam is purified by the graphite gill purification device before being discharged from the steam collection hood. A portion of the inhaled steam passes through the graphite gill purification device without a high-voltage electrostatic field. Due to the very small flow rate and low velocity, the graphite mesh of the graphite gill purification device has adsorption capacity, which also intercepts and purifies the steam.

[0026] The electrostatic mesh tray consists of multiple layers of identical mesh strips within a rectangular right-angle frame's airflow openings. Mesh strips within the same layer are installed parallel and enclosed on the same flow cross-section. Each layer's four corners are insulated by insulating gaskets to ensure proper electric field insulation. Symmetrical insulating mounting holes are located at each end of the mesh strip frame, securing it to bolts at both ends of the rectangular right-angle frame. Nuts are used to secure the multiple layers of mesh strips and insulating gaskets within the rectangular right-angle frame. Multiple fixed insulating cylinders are symmetrically arranged within the insulating strip frames of the mesh strips. A single graphite wire is wound parallel to each other on a plane, with the parallel graphite wires not touching and fixed to the insulating cylinders. The parallel, staggered graphite wires of the multiple mesh strips increase the probability of intercepting and colliding contaminants. Multiple graphite wire meshes are installed on the same flow cross section in each layer of the graphite wire mesh. The graphite wire meshes in each layer maintain a flow distance. Each layer of graphite wire mesh is connected to the electrostatic mesh disk via cables and conduits within an insulated frame. All layers of graphite wire mesh are connected to a high-voltage electrostatic power supply via these sockets. The graphite wires of the graphite wire mesh are connected in series to the power supply. Pollutant airflow passes through the strip-shaped gill plates and radial graphite gill lines. Pollutant particles are adsorbed onto the graphite gill lines or charged by the electric field of the graphite gill lines and flow towards the electric field of the electrostatic mesh disk. In the electrostatic field of the multi-layered graphite wire mesh, the adsorption effect of the graphite wire mesh and the adsorption force of the high-voltage electrostatic field cause extremely small particles such as VOCs, bacteria, and viruses to be adsorbed onto the graphite wire mesh of the electrostatic mesh disk.

[0027] The electrostatic mesh of the exhaust graphite gill is located around the barrel-shaped graphite gill. Airflow moves from the inlet graphite gill to the outlet graphite gill, increasing the cross-sectional area and rapidly decreasing the airflow velocity. The airflow flows smoothly and slowly through the high-voltage electrostatic field of the graphite gill and the electrostatic mesh. The repulsive force of the electric field causes the tips of the graphite gill fibers to be evenly distributed with very small spacing. Pollutant particles slowly pass through the flow cross-section and are then intercepted, collided with, and adsorbed by the high-voltage electrostatic multi-layer mesh. Even extremely small particles such as VOCs, bacteria, and viruses have difficulty passing through the dense multi-layer mesh and are adsorbed onto the graphite mesh of the electrostatic mesh. All polluted airflow passes through the high-voltage electrostatic field of the graphite gill and the electrostatic mesh. The electric field strength exceeds the ionization field strength of the gas, causing ionization and producing ozone and plasma that oxidize the pollutant particles, dissolving them and purifying the air.

[0028] Graphite gill purification devices can be installed in fresh air ducts and air boxes to purify the air, or they can be installed in fume collection hoods to purify cooking fumes. Through the fine purification process using double-layer graphite gills and electrostatic mesh discs, the purification rate is greatly improved.

[0029] After a period of use, the graphite gill purification device will accumulate dirt on the graphite lines, clogging the micropores of the graphite fibers, reducing the specific surface area, and causing the graphite lines to gradually lose their adsorption capacity. The dirt on the surface of the graphite lines also reduces their conductivity, the ability to discharge high-voltage electrostatic fields, and their ability to adsorb particulate matter. Multiple steam nozzles with spray angles directed towards the air inlet of the graphite gill are evenly distributed at the lower part of the air inlet graphite gill, and are sealed and fixedly connected to the steam pipe of the instantaneous steam generator. The water pipe of the steam generator is fixedly connected to the main water pipe via a regulating water valve and a solenoid valve. The cleaning process is initiated by an intelligent programmable controller or manual control. The variable frequency fan, electric air valve, and normally open temperature control switch are shut off. The steam generator is powered on, and the solenoid valve on the water inlet pipe is opened. Water, regulated by the regulating valve, enters the instantaneous steam generator and immediately transforms into high-temperature steam. This high-temperature steam is then sprayed through steam pipes and nozzles into the air inlet of the graphite gills, heating and cleaning the graphite lines on the graphite gills and electrostatic mesh. The purification channel is filled with high-temperature steam, which, along with condensed hot water, removes contaminants adhering to the graphite lines and cleans the purification channel and its components. A drain hole is located on the bottom plate of the graphite gill cavity, allowing condensate and cleaning waste to flow through a drain pipe to an oil collection tank, and then out through a drain valve into the gas collection hood. After steam cleaning, the variable frequency fan and electric air valve are opened to dry all condensate and moisture in the gas collection hood.

[0030] High-temperature steam and condensed hot water cleaning can remove most of the contaminants adhering to the graphite wires. However, to restore the graphite wires' adsorption capacity, further heating at higher temperatures for a period of time is required to restore their adsorption capacity and conductivity. The graphite wires possess high-temperature resistance and flame retardant properties, allowing them to withstand high temperatures. They also have excellent conductivity, which can be heated when energized to remove dirt from the wire mesh. Each layer and section of the electrostatic stencil has cables connected to the power supply. These cables are connected in series via multi-hole sockets in the stencil frame. The heating length and current are controlled based on the resistivity of the selected graphite wires. Turning on the electric heating switch on the power control box allows current to flow through the graphite wires in the electrostatic stencil. The conductive heating effect heats the connected graphite wires, oxidizing the adhering oil and dirt, and also heating the graphite gills. A normally closed temperature control switch is installed near the electrostatic stencil. This switch disconnects the current and stops power application when the temperature reaches 300 degrees Celsius. As the temperature drops, the temperature control switch activates, continuing heating. The graphite gill lines of the graphite gills, close to the electrostatic mesh, also heat the graphite gill lines, causing the graphite lines and any adhering dirt to the electrostatic mesh to oxidize. The temperature rise and heating time are controlled manually or by an intelligent programmable controller, restoring the graphite lines' adsorption capacity and conductivity. The system is reusable and does not cause secondary pollution.

[0031] A lamp holder is installed at the center of the lower annular plate of the inlet graphite gill and the cavity cover plate of the outlet graphite gill in the graphite gill purification device. The lamp holder of the lower annular plate is connected to the horizontal plate of the lower annular plate and has the same width as the ceramic lamp holder. Ceramic lamp holders are fixed at the center of both lamp holders. A single-end 4-pin ultraviolet lamp is sealed to the socket of the lamp holder through a protective silicone sleeve. The ultraviolet lamp is parallel to the center line of the graphite gill purification device, allowing ultraviolet light to irradiate the graphite lines of the graphite gill and electrostatic mesh. Ultraviolet light has strong irradiation energy, and hydrocarbons have a strong absorption capacity for ultraviolet light. When ultraviolet light irradiates organic pollutants, a photosensitive reaction occurs, decomposing the pollutants into carbon dioxide and water vapor, thus removing the adhering organic pollutants from the surface of the graphite lines in the purification device. The ultraviolet lamp has ceramic lamp holders at both ends, and the lamp itself is made of explosion-proof quartz glass, resistant to high temperatures and water immersion, and can be used in polluted environments. The irradiation time is controlled by an intelligent programmable controller to ensure that the graphite lines reach the preset irradiation time, restoring the adsorption and conductivity of the graphite lines.

[0032] A normally open temperature control switch is installed in the air outlet of the electric air valve, connected to the power supply of the electric air valve motor and the solenoid valve power supply of the water supply pipe. This switch continuously monitors the temperature of the airflow passing through the air valve outlet. When the temperature reaches a preset limit, it automatically activates the geared motor power, closing the electric air valve. Simultaneously, it activates the solenoid valve power supply of the water supply pipe, spraying water mist into the air inlet of the graphite gill purification device. Alternatively, the normally open temperature control switch can be connected to the electric air valve motor power supply via an intelligent programmable controller. When the temperature reaches a preset limit, it automatically activates the geared motor power supply, closing the electric air valve and cutting off the high-temperature airflow and ignition source. At the same time, it activates the solenoid valve connected to the water supply pipe, spraying water mist into the air inlet of the graphite gill purification device, isolating the high-temperature airflow and cutting off the ignition source, thus preventing fires inside the gas collection hood and air duct. When the water mist sprays into the purification channel, it cools and extinguishes the fire. As the temperature drops, the normally open temperature control switch returns to the closed state. The intelligent programmable controller detects the sampling signal from the normally open temperature control switch and controls the solenoid valve of the water supply pipe to close, stopping the water mist spraying.

[0033] The graphite gill purification device can be controlled by an intelligent programmable controller or manually. When the device is turned on, the intelligent programmable controller initiates the airflow purification process, controlling the high-voltage electrostatic power supply and power supply in the power control box to supply power to the equipment based on the number of flue gas equipment in operation. This controls the electric dampers and graphite gill purification devices in multiple corresponding purification channels to perform airflow purification. Opening the electric dampers of the purification channels connects the high-voltage electrostatic power supply to the graphite gill purification devices, generating a high-voltage electrostatic field between the graphite gills and the electrostatic mesh. Under the influence of the high-voltage electric field between the graphite gills and the electrostatic mesh, multiple bundles of graphite wires of equal length repel like charges and attract unlike charges. Each bundle of graphite gill wires radiates outwards, with each wire maintaining an equal distance from the fiber tips of other graphite gill wires, extending towards the electrostatic mesh, forming an evenly spaced electric field. The negative pressure generated by the rotation of the variable frequency fan draws in airflow through the main duct, and the airflow is drawn in polluted airflow through the opened electric dampers. The polluted airflow enters around the periphery of the inlet graphite gills, flows in through the gaps between the strip-shaped gill plates, and passes through the gaps between the radially arranged high-voltage positively charged graphite gill lines. There, it collides with, intercepts, and adsorbs pollutant particles in the airflow, or charges the pollutant particles, which are then attracted by the high-voltage negative charge of the parallel, interlaced screen of the electrostatic grating, further colliding with, intercepting, and adsorbing the pollutant particles in the airflow. Under the negative pressure of the fan, the airflow flows towards the inlet of the upper and lower annular plates of the outlet graphite gills, flows in through the gaps between the strip-shaped gill plates, and passes through the gaps between the radially arranged high-voltage positively charged graphite gill lines. There, it collides with, intercepts, and adsorbs pollutant particles in the airflow, or charges the pollutant particles, which are then attracted by the high-voltage negative charge of the parallel, interlaced screen of the electrostatic grating, further colliding with, intercepting, and adsorbing the pollutant particles in the airflow. When the electric field strength exceeds the ionization field strength of the gas, the gas ionizes, producing ozone and plasma that react with the pollutant particles to oxidize them, causing them to be adsorbed, discharged, and decomposed. Due to the high density, high conductivity, small gaps, light weight, and oleophilic / hydrophobic adsorption capacity of the graphite gill lines and the parallel, interlaced electrostatic mesh, polluted airflow passes through and adsorbs particulate matter at close range. This reduces the voltage of the high-voltage electrostatic field, increasing the adsorption force and probability of particulate matter adsorption. The smooth and slow flow of air through the graphite gill lines, the parallel, interlaced mesh, and the electrostatic field results in multiple rounds of fine purification, significantly improving the purification rate. Because the graphite gill purification device has a large flow cross-sectional area, low air velocity, and no rotating equipment, there is no mechanical vibration or aerodynamic noise, further enhancing adsorption and purification efficiency. The graphite gill purification device fully utilizes the space of the gas collection hood, installed within the purification channel, purifying oily fume pollutants within the hood. This front-end purification prevents oil buildup in the duct, greatly reducing the risk of duct fires and maintenance workload.

[0034] Because graphite wires are resistant to high temperatures and corrosion, the graphite gill purification device can also be removed from the inspection port and soaked in a cleaning solution to remove contaminants such as oil and dust, thus more fully restoring the adsorption activity and conductivity of the graphite wires.

[0035] Graphite gill purification devices can also be installed at the air vents of air conditioners and other fresh air supply systems to purify dust, VOCs, bacteria, viruses, and outdoor moisture in the fresh air, control the generation of a small amount of ozone from the high-voltage electrostatic field, and kill bacteria that grow in the fresh air ducts.

[0036] Compared with existing technologies, the present invention has the following advantages: The graphite gill purification device differs from existing purification technologies in structure and method. It integrates multiple technologies, including dynamic interception and collision, carbon active adsorption, electrostatic adsorption, and ozone and negative oxygen ion generation via high-voltage electrostatic field ionization. Utilizing the high-voltage electrostatic field between the graphite gills and the electrostatic mesh, the device effectively adsorbs and intercepts dust, bacteria, viruses, odors, and other particles in the air. These particles are adsorbed by electrodes, discharged, and decomposed, purifying the air. This solution overcomes the limitations of passive purification mechanisms relying on relative motion and collision, such as dynamic mesh, filters, and water mist purification; and also addresses the shortcomings of fixed-structure interception and electrostatic adsorption, where the gaps are too large to effectively adsorb extremely small VOC particles. This significantly improves purification efficiency.

[0037] The graphite gill purification device utilizes the repulsive force of like charges in high-voltage electrostatics to ensure that each graphite gill filament maintains an equal distance from the tips of other graphite gill filaments. The graphite gill filaments radiate outwards, all extending towards the electrostatic mesh. With high density, small gaps, high conductivity, light weight, and both oleophilic and hydrophobic adsorption forces, the device utilizes carbon active adsorption and electrostatic field adsorption. The gaps are significantly reduced, allowing polluted airflow to pass through close-range adsorption of particulate matter. This reduces the high-voltage electrostatic voltage, increasing the adsorption force and probability of particle adsorption.

[0038] Graphite gills and electrostatic mesh discs are made using high-performance carbon materials such as carbon fiber and graphite fiber. In addition to having excellent properties such as low density, high specific strength, high specific modulus, low coefficient of thermal expansion, thermal conductivity, electrical conductivity, high temperature resistance, flame retardancy, corrosion resistance, fatigue resistance, wear resistance, easy cleaning and maintenance, good flexibility, convenient winding, and easy processing, they also have hydrophobic and oleophilic properties and active adsorption properties that other materials do not have. They are suitable for removing various dust, oil fumes, water vapor, VOCs, bacteria, viruses and other extremely small particles.

[0039] The graphite gill purification device uses inlet and outlet graphite gills and electrostatic mesh disks for multi-layered wired purification, which reduces electrostatic voltage, saves energy and reduces consumption, and greatly improves purification efficiency from a technical perspective.

[0040] The use of graphite wires, which have a small diameter and high strength, makes them easy to densely wind and process. This method offers advantages such as convenient processing and manufacturing, reduced processing of the housing and larger metal parts, elimination of complex and time-consuming welding processes, smaller purification structure, and installation in the gas collection hood, thus reducing manufacturing costs.

[0041] The graphite gill purification device incorporates high-temperature steam cleaning, ultraviolet light cleaning, and electric heating cleaning methods to periodically remove various adhering contaminants, restore the adsorption and conductivity of the mesh, and improve purification efficiency. It is easy to reuse and recycle, and cleaning and maintenance are simple and convenient, with no secondary pollution.

[0042] The graphite gill purification device is installed within multiple purification channels of the gas collection hood, reducing the structure of the smoke collection box and making full use of the structural space of the gas collection hood; the negative pressure air outlet is brought closer to the flue gas source, reducing the exhaust volume and wind speed; the flow cross-sectional area is increased, reducing resistance loss and ensuring smooth exhaust; the graphite gill purification device, installed within the purification channel, has no power unit, and the wind speed is very low, resulting in no rotational noise or airflow noise; the graphite gill purification device is easy to integrate with intelligent control devices for intelligent control, which can greatly reduce energy consumption and improve purification efficiency.

[0043] The graphite gill purification device is installed in the purification channel of the gas collection hood, realizing front-end purification of the system. The graphite lines and graphite mesh have the fireproof function of high temperature resistance and preventing open flame from passing through. A normally open temperature control switch is set in the electric air valve. The electric air valve is automatically closed by the intelligent programming controller, and water mist is sprayed onto the inlet graphite gill to isolate the high temperature airflow or cut off the fire source, realizing the automatic fire prevention and fire extinguishing function.

[0044] The gas collection hood and graphite gill purification device are designed with supporting features such as guide channels, sewage outlets, sewage pipes, and sewage valves to meet actual sewage discharge needs. The panel is designed with a joint structure to intercept condensed oily and wastewater, which is all guided into the gas collection hood. This facilitates the flow of condensed and cleaned oily and wastewater into the guide channel and oil collection tank of the gas collection hood, reducing maintenance and cleaning work and lowering maintenance costs.

[0045] The purification technology of graphite gill purification devices can also be used in professional fields such as air conditioning, household kitchen exhaust hoods, and industrial dust removal, and has universal applicability. Attached Figure Description

[0046] Figure 1 This is a side cross-sectional view of an embodiment of the graphite gill purification device of the present invention installed inside the gas collection hood.

[0047] Figure 2 yes Figure 1 A frontal cross-sectional view of an implementation example of a graphite gill purification device installed inside a gas collection hood.

[0048] Figure 3 yes Figure 1 A top-view cross-sectional diagram of the graphite gill exhaust gas purification device.

[0049] Figure 4 yes Figure 1 A top-view cross-sectional diagram of the graphite gill air intake of the graphite gill purification device.

[0050] Figure 5 yes Figure 1 A magnified front view of the strip-shaped gill plate of the graphite gill purification device.

[0051] Figure 6 yes Figure 1 A top-down enlarged schematic diagram of the graphite gill purification device with strip-shaped gill plates.

[0052] Figure 7 yes Figure 1 A magnified front view of the electrostatic mesh disk of the graphite gill purification device.

[0053] Figure 8 yes Figure 1 A magnified side view of the electrostatic mesh disk of the graphite gill purification device.

[0054] In the diagram, Z1. Fume hood, Z2. Smoke collection box, Z3. Purification channel, Z4. Electric air valve, Z5. Gas storage hood, Z6. Oil receiving trough, Z7. Fume hood panel, Z8. Steam generator, Z9. Normally open temperature control switch, Z10. Upper inspection plate, Z11. Lower inspection plate, Z12. Middle partition, Z13. Main exhaust pipe, Z14. Cable conduit, Z15. Power control box, Z16. Purification channel partition, Z17. Guide channel, Z18. Drain valve, Z19. Solenoid valve, Z20. Regulating water valve, Z21. Fixed angle strip, Z22. Steam nozzle, Z23. Steam pipe, Z25. Intelligent programmable controller, Z26. Power supply, Z27. High-voltage electrostatic power supply, Z28. Negative pressure air intake, Z29. One-way air valve, Z30. Drain pipe, Z31. Drain outlet. D1. Graphite gills, D2. Electrostatic mesh disc, D3. Strip gill plate, D4. Graphite gill line, D5. Mesh disc frame, D6. Lower annular plate, D7. Upper annular plate, D8. Screw, D9. Mesh line mesh, D10. Cable, D11. Gasket, D12. Socket, D13. Insulating ceramic post, D14. Insulating board, D15. Pin hole, D16. Connecting wire, D17. Cavity bottom, D18. Cavity cover, D19. Waist-shaped mouth, D20. Shaft plate, D21. Opening clamp, D22. Insulating cylinder, D23. Ultraviolet lamp tube, D24. Lamp tube bracket, D25. Normally closed temperature control switch. Detailed Implementation

[0055] The invention will be further illustrated by the examples shown in the accompanying drawings. Figure 1 This is a side cross-sectional view of an embodiment of the graphite gill purification device of the present invention installed inside the gas collection hood. Figure 2 yes Figure 1 A frontal cross-sectional view of an implementation example of a graphite gill purification device installed inside a gas collection hood.

[0056] When installing the graphite gill purification device in the gas collection hood Z1, the internal structure of the graphite gill purification device and the gas collection hood are designed to be compatible. The gas collection hood has a gas collection hood panel Z7, and an air storage hood Z5 is located outside the gas collection hood panel. The air storage hood, which extends forward from the gas collection hood, is composed of a sloping air storage hood top plate, a gas collection hood panel, and a surrounding plate. The air storage space of the air storage hood runs through the gas collection hood, allowing it to temporarily store the rising and escaping flue gas when a large amount of flue gas is suddenly generated. The flue gas is then slowly drawn into the purification channel inside the gas collection hood by the negative pressure air intake Z28 provided on the gas collection hood panel, preventing it from overflowing. The lower part of the air storage hood surrounding plate has a U-shaped guide groove Z17, and the U-shaped guide groove on the side plate of the gas collection hood connects to the oil receiving groove Z6 at the bottom of the gas collection hood. The front panel of the gas storage hood, which extends forward from the gas collection hood, is equipped with a power control box Z15. The power control box contains an intelligent programmable controller Z25, a high-voltage electrostatic power supply Z27, and a power supply Z26. The power control box panel is equipped with control switches such as a steam cleaning switch and an electric heating switch, as well as a system operation display screen.

[0057] The fume hood is equipped with a fume hood panel, which consists of three sections: an upper inspection plate (Z10), a lower inspection plate (Z11), and an electric damper slanted panel. The fume hood panel is fixedly connected to the side panels of the fume hood. The lower electric damper slanted panel is parallel to the U-shaped guide groove of the side panel, with sufficient clearance for cleaning the U-shaped guide groove. The lower part of the electric damper slanted panel is inserted into an oil collection groove and connects to the rear upright plate. The widths of the upper and lower inspection plates and the electric damper slanted panel are designed in conjunction with the length of the fume hood, generally equal to the width of two purification channels (Z3). The heights of the upper and lower inspection plates correspond to the heights of the exhaust and intake graphite gills, facilitating installation and maintenance. The electric damper slanted panel is fixedly connected at an angle. The upper section of the three panels is inserted into the lower section, leaving a small gap at the connection point, which is secured with screws. Condensate from the fume hood panel flows into the connection gap along the panel, preventing dripping.

[0058] For each piece of equipment that generates flue gas, a purification channel Z3 is installed inside the gas collection hood. An electric damper Z4 and a purification channel air outlet are installed on the inclined panel of the gas collection hood facing the flue gas source. The electric damper is mounted on the inclined panel of the electric damper via an electric damper flange. A normally open temperature control switch Z9 is installed in the middle of the electric damper inlet and connected to the power supply. Each purification channel is equipped with a purification channel partition Z16, which is longitudinally fixed to the gas collection hood panel and the rear upright plate of the gas collection hood, with its lower part abutting against the inclined panel of the electric damper, and its upper part fixedly sealed to the transverse middle partition Z12. The middle partition is transversely sealed to the two purification channel partitions, the gas collection hood panel, and the rear upright plate of the gas collection hood via fixing angle strips and screws, dividing the purification channel and graphite gill purification device of the gas collection hood into upper and lower parts. The graphite gill purification device is installed in the center of the middle partition inside the purification channel. Airflow channels are left between the graphite gill purification device and the four walls of the purification channel to ensure smooth airflow and reduce flow resistance. The graphite gill purification device is divided into an air inlet graphite gill and an air outlet graphite gill. The air inlet graphite gill is fixed at the lower part of the middle partition, and the air outlet graphite gill is fixed at the upper part of the middle partition. The middle partition has ventilation holes that connect the two graphite gill purification chambers.

[0059] The upper part of the central partition is a connecting space for multiple purification channels, increasing the flow cross-sectional area and forming the smoke collection box Z2. The top plate of the air collection hood is directly connected to the exhaust main pipe Z13. Each purification channel is equipped with an electric air valve. The airflow passes through the inlet and outlet graphite gills of the graphite gill purification device in the purification channel, the smoke collection box, and the exhaust main pipe before reaching the smoke exhaust fan.

[0060] A negative pressure suction port Z28 is installed on the upper part of the lower inspection plate in the middle of the purification channel, with a negative pressure short pipe inside connecting to the purification channel. A one-way valve Z29 is installed inside the negative pressure short pipe. Under the negative pressure of the fan, the one-way valve opens; when the fan is turned off, the one-way valve closes, preventing steam from escaping during steam cleaning of the graphite gills inside the steam collection hood. The steam storage hood of the steam collection hood has a storage space of the same length as the hood itself, capable of accommodating all the escaped flue gas. The negative pressure suction port is located inside the opening of the storage hood; the negative pressure of the fan intercepts and absorbs the escaped flue gas through the negative pressure short pipe. Multiple negative pressure suction ports have a very small cross-sectional area, only a fraction of the flow cross-sectional area of ​​the purification channel, and will not affect the exhaust effect of the electric damper vents. The inhaled flue gas is purified by the graphite gill purification device and then discharged from the steam collection hood. A portion of the inhaled flue gas passes through a graphite gill purification device without a high-voltage electrostatic field. Due to the very small flow rate and low velocity, the graphite mesh of the graphite gill purification device has adsorption capacity and can also be used for interception, adsorption, and purification.

[0061] The graphite gill purification device consists of a high-voltage electrostatic field between graphite gills D1 and electrostatic mesh disks D2. Installed inside the air collection hood, to improve the purification rate, the device is designed as a double-layered purification unit with interconnected inlet and outlet graphite gills. To increase the purification flow cross-sectional area, the graphite gills are designed as annular barrels, allowing airflow from all sides. The annular inlet graphite gill has upper and lower annular plates. The upper annular plate D7 is fixed to the lower part of the central partition via evenly distributed insulating ceramic pillars and insulating plates. The lower annular plate is connected to the bottom plate D17 via evenly distributed insulating ceramic pillars D13 and insulating plates D14. The bottom of the cavity has a drain outlet Z31 sloping towards the center, leading to the oil collection tank Z6 via a drain pipe Z30. The four electrostatic mesh disks of the inlet graphite gill are located within the upper and lower annular plates, parallel to the straight section of the inlet graphite gill, and are fixedly sealed to the central partition and the bottom plate with fixing screws to maintain the distance of the electric field. A rectangular air vent is located between four electrostatic mesh trays on the central partition, connecting to the exhaust graphite gills. The exhaust graphite gills have upper and lower annular plates. The lower annular plate is fixed to the upper part of the central partition by evenly distributed insulating ceramic pillars and insulating plates. The four electrostatic mesh trays are located around the graphite gills. A cavity cover D18, which is sealed and fixed to the four electrostatic mesh trays, is located at the top. The upper annular plate is fixed to the cavity cover plate by evenly distributed insulating ceramic pillars and insulating plates. The electrostatic mesh trays of the exhaust graphite gills are sealed and fixed to the cavity cover plate and the central partition by fixing screws. The graphite gills and electrostatic mesh trays of the inlet and outlet graphite gills are arranged according to the airflow direction. The graphite gill line D4 of the graphite gills follows the airflow direction, allowing airflow to enter through the graphite gills. The graphite gill line also follows the airflow direction, allowing airflow to pass perpendicularly through the electrostatic mesh trays. All airflow enters through the inlet graphite gills and exits through the outlet graphite gills, undergoing purification by the graphite gills and electrostatic mesh trays.

[0062] Between the upper and lower annular plates of the inlet and outlet graphite gills, graphite gill strips D3 are evenly fixed on the inlet side. These strips mimic the structure of fish gills, with gill filaments distributed along the water flow direction. Metal plates are used for the strips, and graphite wires are used for the gill lines D4. Symmetrical waist-shaped holes D19 are evenly arranged on the inlet side between the upper and lower annular plates of the inlet graphite gill. Axle plates D20, with a height equal to the thickness of the annular plates, are installed at both ends of the inlet side of the strip gill plate and inserted into the waist-shaped holes of the upper and lower annular plates for fixation. Waist-shaped openings are evenly made on the inlet side of the strip gill plate, and multiple graphite gill lines of equal length are wound inside these openings. The graphite gill lines are clamped and fixed on the inlet side of the strip gill plate using clamps D21 with an opening distance equal to the distance between the upper and lower annular plates. The strip gill plates are evenly fixed to the outer edge of the inlet side between the upper and lower annular plates of the graphite gill. The opening clamp is made of a metal strip with one side having an arc. The diameter of the arc is larger than the thickness of the strip gill plate plus the diameter of the graphite wire. The length of both sides of the opening clamp exceeds the length of the waist-shaped opening of the strip gill plate. It has an outward-curving arc to facilitate the insertion of the strip gill plate into the opening clamp to clamp and fix the graphite gill wire. Each end of the strip gill plate and the opening clamp has a pin hole D15. The opening clamp clamps the strip gill plate and inserts the connecting wire D16 for fixation. The parallel strip gill plates, evenly distributed between the upper and lower annular plates, are equidistant from the edge of the annular plates. Multiple graphite gill wires of equal length are wound around the strip gill plates and fixed to the graphite gill strip gill plates. Under the action of the high-voltage electric field of the graphite gill and graphite gill wire mesh, the repulsive force of like charges and the attractive force of unlike charges cause each bundle of multiple scattered graphite gill wire fibers to radiate. The graphite gill wires of the strip gill plate extend towards the electrostatic mesh disk at equal intervals. The upper annular plate is fixed to the lower part of the middle partition via insulating ceramic pillars and insulating plates, and the lower annular plate is fixedly connected to the bottom of the cavity via insulating ceramic pillars and insulating plates.

[0063] The inner edge of the air inlet of the upper and lower annular plates of the exhaust graphite gill has evenly distributed, symmetrical waist-shaped holes. The shaft plates at both ends of the air inlet side of the strip-shaped gill plate, with a height equal to the thickness of the annular plate, are inserted into the waist-shaped holes of the upper and lower annular plates for fixation. The air inlet side of the strip-shaped gill plate has evenly distributed waist-shaped openings, into which multiple graphite gill lines of equal length are wound. The graphite lines are clamped and fixed on the air inlet side of the strip-shaped gill plate using clamps with an opening equal to the distance between the upper and lower annular plates. The strip-shaped gill plates are evenly and parallelly fixed to the inner edge of the air inlet side between the upper and lower annular plates of the graphite gill. The clamps secure the graphite gill lines to the strip-shaped gill plates, and a connecting wire is inserted for further fixation. Because the air outlet direction is outward, the strip-shaped gill plates and graphite gill lines flow outward with the airflow and into the upper part of the central partition of the purification channel. The lower annular plate of the exhaust graphite gill is fixed to the upper part of the central partition via insulating ceramic pillars and insulating plates, while the upper annular plate is fixedly connected to the cavity cover of the exhaust graphite gill via insulating ceramic pillars and insulating plates. The airflow directions of the inlet and outlet graphite gills are different. Both the inlet and outlet graphite gills are connected to the positive terminal of the high-voltage electrostatic discharge device, and the corresponding electrostatic mesh is connected to the negative terminal of the high-voltage electrostatic power supply. The high-voltage electrostatic discharge device causes the graphite gill lines to extend towards the electrostatic mesh with equal electric field gaps.

[0064] Multiple bundles of graphite gill filaments of equal length, under the influence of the high-voltage electric field of the graphite gills and electrostatic mesh disk, radiate outwards from each bundle, all extending towards the electrostatic mesh disk. The repulsive force of like charges in the high-voltage electrostatic field ensures that each graphite gill filament maintains an equal distance from the tips of other graphite gill filaments. Due to the tip discharge effect of the high-voltage electrostatic field, the tips of the graphite gill filament fibers become concentrated discharge areas, more effectively adsorbing or charging pollutant particles such as dust, VOCs, bacteria, viruses, fumes, and particulate matter. These particles are then adsorbed, discharged, and decomposed by the electric field of the electrostatic mesh disk, purifying the airflow. When local airflow disturbances occur, the graphite gill filaments also oscillate with the airflow. Due to the repulsive and attractive forces generated by the electric field, the oscillating graphite gill filaments and their tips always maintain a uniform distribution with very small spacing in the flow cross-section. When particles or pollutant particles with different charges approach each other, the mutual attraction pulls the graphite gill filaments and their tips closer together, dynamically adsorbing and intercepting them, changing the passive collision adsorption method and increasing the purification rate of airflow pollutants. Due to the repulsive effect of the same electric field, the tips of the graphite gill fibers are evenly distributed in the flow cross-section with a very small and uniform spacing. When particles with different charges approach each other, the attraction also pulls the graphite gill fiber tips closer together. The graphite gills also exhibit airflow disturbance and small-range oscillation caused by dirt on the tips. The dynamic, uniform, and very small spacing of the graphite gills reduces electrostatic voltage, saves energy, and increases safety and reliability. Compared with existing high-voltage electrostatic purifier technology, this eliminates the drawbacks of high voltage between plates, large gaps, easy electric field breakdown, and the impact of slightly faster airflow on purification efficiency.

[0065] The electrostatic mesh disk D2 consists of a rectangular right-angle frame D5 with multiple identical mesh strips D9 inside the air vent. Mesh strips of the same layer are installed parallel and enclosed on the same flow section. Each layer of mesh strips is insulated at its four corners by insulating gaskets D11 to ensure electric field insulation. Two symmetrical insulating mounting holes are provided at each end of the mesh strip frame, which are fixed to screws D8 at both ends of the rectangular right-angle frame of the mesh disk. Nuts are used to secure the multiple layers of mesh strips and insulating gaskets within the rectangular right-angle frame of the mesh disk. Multiple fixed insulating cylinders D22 are symmetrically arranged within the insulating frame of the mesh strips. A graphite wire mesh is formed by parallel winding of a single graphite wire on a plane; the parallel graphite wires do not contact each other and are fixed to the insulating cylinders. The graphite wires of the multiple mesh strips are parallel and staggered by half a wire spacing, increasing the probability of intercepting collision contaminants. Multiple graphite wire meshes are installed on the same flow cross section in each layer of the graphite wire mesh. The graphite wire meshes in each layer maintain a flow distance. Each layer of graphite wire mesh is connected to the electrostatic mesh disk via a cable and conduit within an insulated frame (D12). All layers of graphite wire mesh are connected to a high-voltage electrostatic power supply (Z27) via the multi-hole socket. The graphite wires of the graphite wire mesh are connected in series to the power supply (Z26). The polluted airflow passes through the strip-shaped gill plates and radial graphite gill lines. Pollutant particles are adsorbed onto the graphite gill lines or charged by the electric field of the graphite gill lines and flow towards the electric field of the electrostatic mesh disk. In the electrostatic field of the multi-layered graphite wire mesh, the adsorption effect of the graphite wire mesh and the adsorption force of the high-voltage electrostatic field make it difficult for even extremely small particles such as VOCs, bacteria, and viruses to pass through the dense multi-layered graphite wire mesh; they are adsorbed onto the graphite wire mesh of the electrostatic mesh disk. All pollutant airflow passes through the high-voltage electrostatic field of the graphite gills and electrostatic mesh, controlling the electric field strength to exceed the ionization field strength of the gas, causing the gas to ionize and produce ozone and plasma to react with the pollutant particles, thus decomposing the pollutant particles.

[0066] The electrostatic mesh disk of the exhaust graphite gill is located around the barrel-shaped graphite gill. Airflow moves from the inlet graphite gill to the outlet graphite gill, increasing the cross-sectional area and rapidly decreasing the airflow velocity. The airflow flows smoothly and slowly through the high-voltage electrostatic field of the graphite gill and the electrostatic mesh disk. Particulate matter in the airflow is intercepted or adsorbed and decomposed by the electrostatic field of the graphite gill and the electrostatic mesh disk. The graphite gill purification device can be installed in fresh air ducts or air boxes to purify air, or it can be installed in a fume collection hood to purify oil fumes. Through the fine purification of the double-layered graphite gill and electrostatic mesh disk, the purification rate is greatly improved.

[0067] After a period of use, the graphite gill purification device will accumulate dirt on the graphite lines, clogging the micropores of the graphite fibers, reducing the specific surface area, and causing the graphite lines to gradually lose their adsorption capacity. The dirt on the surface of the graphite lines also reduces their conductivity, the ability to discharge high-voltage electrostatic fields, and their ability to adsorb particulate matter. Multiple steam nozzles Z22, evenly distributed at the lower part of the graphite gill inlet in the purification channel, are directed towards the air inlet of the graphite gill and are sealed and fixedly connected to the instantaneous steam generator Z8 and steam pipe Z23. The water supply pipe of the steam generator is fixedly connected to the water supply pipe via regulating water valve Z20 and solenoid valve Z19. The cleaning process is initiated by an intelligent programmable controller or manual control. The variable frequency fan, electric air valve, and normally open temperature control switch are shut off. The steam generator power is turned on, and the solenoid valve on the water inlet pipe is opened. Water, regulated by the regulating valve, enters the instantaneous steam generator and immediately becomes high-temperature steam. This high-temperature steam is then sprayed through steam pipes and nozzles into the air inlet of the graphite gills, heating and cleaning the graphite lines on the graphite gills and electrostatic mesh. The purification channel is filled with high-temperature steam, which, along with condensed hot water, removes contaminants adhering to the graphite lines and cleans the purification channel and components. A drain port is located on the bottom plate of the graphite gill cavity, allowing condensate and cleaning waste to flow through a drain pipe to an oil receiving tank, and then out through a drain valve to the gas collection hood. After steam cleaning, the variable frequency fan and electric air valve are opened to dry all condensate and moisture in the gas collection hood.

[0068] High-temperature steam and condensed hot water cleaning can remove most of the contaminants adhering to the graphite wires. However, to restore the graphite wires' adsorption capacity, further heating at higher temperatures for a period of time is required to restore their adsorption capacity and conductivity. The graphite wires possess high-temperature resistance and flame retardant properties, allowing them to withstand high temperatures. They also have excellent conductivity, which can be heated when energized to remove stains from the wire mesh. Each layer and section of the electrostatic stencil has a cable connected to the power supply. The length of the heated graphite wires and the heating current are controlled based on the resistivity of the selected graphite wires. Turning on the electric heating switch on the power control box allows the power supply current to flow through the graphite wires of the electrostatic stencil. The conductive heating effect heats the graphite wires and also bakes and heats the graphite gills, oxidizing the adhering oil and stains. A normally closed temperature control switch D25 is installed near the electrostatic stencil. This switch disconnects the current and stops power supply when the temperature reaches 300 degrees Celsius. As the temperature drops, the temperature control switch activates, continuing heating. The graphite gill lines of the graphite gills, close to the electrostatic mesh, also heat the graphite gill lines, causing the graphite lines and any adhering dirt to the electrostatic mesh to oxidize. The temperature rise and heating time are controlled manually or by an intelligent programmable controller, restoring the graphite lines' adsorption capacity and conductivity. The process allows for reuse without causing secondary pollution.

[0069] A lamp holder D24 is installed at the center of the lower annular plate of the inlet graphite gill and the cavity cover plate of the outlet graphite gill in the graphite gill purification device. The lamp holder of the lower annular plate is connected to the horizontal plate of the lower annular plate and has the same width as the ceramic lamp holder. Ceramic lamp holders are fixed at the center of both lamp holders. A single-end 4-pin ultraviolet lamp D23 is sealed to the socket of the lamp holder through a protective silicone sleeve. The ultraviolet lamp is parallel to the center line of the graphite gill purification device, allowing ultraviolet light to irradiate the graphite lines of the graphite gill and electrostatic mesh. Ultraviolet light has strong irradiation energy, and hydrocarbons have a strong absorption capacity for ultraviolet light. When ultraviolet light irradiates organic pollutants, a photosensitive reaction occurs, decomposing the pollutants into carbon dioxide and water vapor, thus removing the adhering organic pollutants from the surface of the graphite lines of the purification device. The ultraviolet lamp has ceramic lamp holders at both ends, and the lamp itself is made of explosion-proof quartz glass, resistant to high temperatures and water immersion, and can be used in polluted environments. The irradiation time is controlled by an intelligent programmable controller to ensure that the graphite lines reach the preset irradiation time. To restore the adsorption and conductivity of graphite wires.

[0070] A normally open temperature control switch is installed in the air outlet of the electric air valve, connected to the power supply of the electric air valve motor and the power supply of the solenoid valve controlling the water distribution pipe. This switch continuously monitors the temperature of the airflow passing through the air valve outlet. When the temperature reaches a preset limit, it automatically activates the geared motor, closing the electric air valve. Simultaneously, it activates the solenoid valve controlling the water distribution pipe, spraying water mist into the air inlet of the graphite gill purification device. The normally open temperature control switch can also be connected to the electric air valve motor power supply via an intelligent programmable controller. When the temperature reaches a preset limit, it automatically activates the geared motor, closing the electric air valve and cutting off the high-temperature airflow and ignition source. At the same time, it activates the solenoid valve controlling the water distribution pipe, connected to the main water pipe, spraying water mist into the air inlet of the graphite gill purification device, isolating the high-temperature airflow and cutting off the ignition source, thus preventing fires inside the gas collection hood and in the air duct. When the water mist sprays into the purification channel, it cools and extinguishes the fire. As the temperature drops, the normally open temperature control switch returns to the closed state. The intelligent programmable controller detects the sampling signal from the normally open temperature control switch and controls the closure of the water supply pipe solenoid valve, stopping the water mist spraying. When the kitchen stove corresponding to the purification channel starts to ignite, the intelligent programmable controller controls the oil fume purification equipment and electric air valve to resume working.

[0071] The graphite gill purification device can be controlled by an intelligent programmable controller or manually. When the device is turned on, the intelligent programmable controller initiates the airflow purification process, controlling the high-voltage electrostatic power supply and power supply in the power control box to supply power to the equipment based on the number of flue gas equipment in operation. This controls the electric dampers and graphite gill purification devices in multiple corresponding purification channels to perform airflow purification. Opening the electric dampers of the purification channels connects the high-voltage electrostatic power supply to the graphite gill purification devices, generating a high-voltage electrostatic field between the graphite gills and the electrostatic mesh. Under the influence of the high-voltage electric field between the graphite gills and the electrostatic mesh, multiple bundles of graphite gill wires of equal length repel like charges and attract unlike charges. Each bundle of multiple equal-length graphite gill wires radiates outwards, with each wire maintaining an equal distance from the fiber tips of other graphite gill wires, extending towards the electrostatic mesh, forming an evenly spaced electric field. The negative pressure generated by the rotation of the variable frequency fan draws in airflow through the main duct, and the airflow is drawn in polluted airflow through the opened electric dampers. The polluted airflow enters around the periphery of the inlet graphite gills, flows in through the gaps between the strip-shaped gill plates, and passes through the gaps between the radially arranged high-voltage positively charged graphite gill lines. There, it collides with, intercepts, and adsorbs pollutant particles in the airflow, or charges the pollutant particles, which are then attracted by the high-voltage negative charge of the parallel, interlaced screen of the electrostatic grating, resulting in repeated collisions, interceptions, and adsorptions of pollutant particles. Under the negative pressure of the fan, the airflow flows towards the inlet of the upper and lower annular plates of the outlet graphite gills, flows in through the gaps between the strip-shaped gill plates, and passes through the gaps between the radially arranged high-voltage positively charged graphite gill lines. There, it collides with, intercepts, and adsorbs pollutant particles in the airflow, or charges the pollutant particles, which are then attracted by the high-voltage negative charge of the parallel, interlaced screen of the electrostatic grating, resulting in further collisions, interceptions, and adsorptions of pollutant particles. By controlling the high-voltage electrostatic field strength to exceed the ionization field strength of the gas, a small amount of ozone is generated, which reacts with the pollutant particles to produce oxidation, and the particles are then adsorbed, discharged, and decomposed. Due to the high density, high conductivity, small gaps, light weight, and oleophilic / hydrophobic adsorption capacity of the graphite gill lines and the parallel, interlaced electrostatic mesh, polluted airflow passes through and adsorbs particulate matter at close range. This reduces the voltage of the high-voltage electrostatic field, increasing the adsorption force and probability of particulate matter adsorption. The smooth and slow flow of air through the graphite gill lines, the parallel, interlaced mesh, and the electrostatic field results in multiple rounds of fine purification, significantly improving the purification rate. Because the graphite gill purification device has a large flow cross-sectional area, low air velocity, and no rotating equipment, there is no mechanical vibration or aerodynamic noise, further enhancing adsorption and purification efficiency. The graphite gill purification device fully utilizes the space of the gas collection hood, installed within the purification channel, purifying oily fume pollutants within the hood. This front-end purification prevents oil buildup in the duct, greatly reducing the risk of duct fires and maintenance workload.

[0072] Because graphite wires are resistant to high temperatures and corrosion, the graphite gill purification device can also be removed from the inspection port and soaked in a cleaning solution to remove contaminants such as oil and dust, thus more fully restoring the adsorption activity and conductivity of the graphite wires.

[0073] Graphite gill purification devices can also be installed at the air vents of air conditioners and other fresh air supply systems to purify dust, VOCs, bacteria, viruses, and outdoor moisture in the fresh air, control the generation of a small amount of ozone from the high-voltage electrostatic field, and kill bacteria that grow in the fresh air ducts.

Claims

1. A device installed within a purification channel, utilizing a high-voltage electrostatic field between graphite gills and an electrostatic mesh disk to purify polluted air. Each purification channel is equipped with a steam nozzle, an ultraviolet lamp, and an electric air valve. The electric air valve is equipped with a normally open temperature control switch. A programmable controller controls the steam generator and electrostatic mesh disk to energize and heat them, removing pollutants trapped by the graphite gills and restoring the adsorption capacity and conductivity of the graphite gills and the electrostatic mesh disk. Its features include: Parallel strip gill plates are fixed at the air inlet section of the graphite gill purification device. Multiple graphite gill lines of equal length with spreading ends are evenly fixed on the strip gill plates and are equidistant from the electrostatic mesh disk. They are connected to a high-voltage electrostatic power supply.

2. The graphite gill purification device according to claim 1, characterized in that: The graphite gill air intake section has parallel strip gill plates that are evenly fixed. Multiple bundles of graphite gill lines of equal length are evenly distributed on the strip gill plates. The graphite fibers that spread out at the ends of the graphite gill lines maintain an equal high-voltage electrostatic field distance with the electrostatic mesh disk.

3. The graphite gill purification device according to claim 1, characterized in that: An air vent is provided in the middle partition of the purification channel, which is vertically fixed to connect the inlet graphite gill and the outlet graphite gill.

4. The graphite gill purification device according to claim 1, characterized in that: The electrostatic mesh is fixed with multiple fixed cylinders symmetrically arranged in the insulating frame of the multi-layer mesh. Graphite wires are continuously and parallelly wound and fixed. The multi-layer mesh is insulated by insulating pads, and the graphite wires are staggered by half the wire spacing.

5. The graphite gill purification device according to claim 1, characterized in that: The electrostatic mesh frame air vents are equipped with multi-layered mesh lines, which are interleaved with the high-voltage electrostatic power supply.

6. The graphite gill purification device according to claim 1, characterized in that: A temperature control switch is installed near the electrostatic mesh. The mesh consists of multiple layers of mutually insulated mesh, with graphite wires connected in series via a multi-hole socket. The normally closed temperature control switch is connected to the power supply.

7. The graphite gill purification device according to claim 1, characterized in that: At the bottom of the graphite gill purification device, steam nozzles are evenly distributed facing the air inlet of the graphite gill purification device. They are sealed to the steam generator via a steam pipe, and the steam generator is connected to the water supply pipe via a solenoid valve.

8. The graphite gill purification device according to claim 1, characterized in that: At the center between the two ends of the graphite gill purification device, an ultraviolet lamp tube parallel to the graphite line of the electrostatic mesh is installed and connected to the power supply.

9. The graphite gill purification device according to claim 1, characterized in that: A normally open temperature control switch is installed in the air outlet of the electric air valve and connected to the power supply of the electric air valve motor and the power supply of the solenoid valve of the water inlet pipe.

10. The graphite gill purification device according to claim 1, characterized in that: Graphite gill lines and electrostatic mesh discs are made using graphite wire.

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