Intelligent aerospace air purification device

Abstract

This invention relates to the field of air purification technology, specifically to an intelligent air purification device for aerospace applications. The device includes a housing with a central shaft rotatably mounted inside, and fan blades fixedly connected to the central shaft. Symmetrical filter holes are formed on the side walls of the housing, and filter elements are symmetrically arranged inside the housing. Several discharge ports are formed on the top of the housing. A rotating ring is rotatably mounted on the inner wall of the housing, with the filter elements fixedly connected to the top of the rotating ring. Baffles are symmetrically fixedly connected to the top of the rotating ring. A drive mechanism for rotating the central shaft is provided on the bottom wall of the housing; a rotation mechanism for rotating the rotating ring is also provided on the side walls of the housing; and a cleaning mechanism is provided on the central shaft for cleaning the filter elements when the central shaft reverses direction. This invention enhances the continuous working capability of the device in long-term confined environments, meeting the requirements of manned spacecraft for high reliability and uninterrupted operation in life support systems.

Description

Technical Field

[0001] This invention relates to the field of air purification technology, and more specifically to an intelligent air purification device for aerospace applications. Background Technology

[0002] In the aerospace field, especially in manned spacecraft, space station, and deep space exploration missions, the cabin air circulation and purification system is the lifeline for maintaining the safety of astronauts. Its core function is to continuously remove particulate matter, microorganisms, volatile organic compounds (VOCs), and carbon dioxide produced by human metabolism from the cabin air, ensuring that air quality meets hygiene standards. Existing aerospace air purification devices typically use fans to drive airflow through high-efficiency composite filters (such as a combination of HEPA and activated carbon) to achieve purification.

[0003] However, during long-term operation, the filter element gradually accumulates dust and becomes clogged, leading to a continuous increase in filtration resistance and a decrease in purified airflow. Due to the special nature of the aerospace environment, it is often difficult to frequently shut down the device to replace the filter element. If the filter element is not dealt with in time after clogging, it will affect the reliability of cabin air circulation and endanger the lives of astronauts. Secondly, the cleaning and maintenance of the filter element in existing devices usually requires manual disassembly or shutdown operation, and online self-cleaning is not possible. In the microgravity environment of space stations or spacecraft, manual filter element replacement is cumbersome and carries the risk of pollutant dispersion, making it difficult to meet the needs of long-term on-orbit operation. Furthermore, aerospace equipment has stringent requirements for lightweight design and size. Existing air purification devices are often complex in structure, with filter elements, fans, air ducts, and other components scattered and with low integration, making it difficult to adapt to the limited space resources inside spacecraft. At the same time, some devices are cumbersome to operate, and purification and cleaning modes often require manual intervention or rely on complex electronic controls, increasing the operational burden on astronauts.

[0004] Therefore, this invention proposes an intelligent air purification device for aerospace applications to solve the technical problems of easy filter clogging, difficult maintenance, high structural complexity, and poor adaptability in the prior art. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides an intelligent air purification device for aerospace applications, which enhances the device's continuous operation capability in long-term enclosed environments, meeting the requirements of manned spacecraft for highly reliable and uninterrupted life support.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: an intelligent aerospace air purification device includes a housing, a central shaft rotatably fitted inside the housing, and a fan blade fixedly connected to the central shaft; symmetrically opened filter holes are provided on the side wall of the housing, and filter elements are also symmetrically arranged inside the housing; a plurality of discharge ports are opened on the top of the housing; a rotating ring is rotatably fitted on the inner wall of the housing, and the filter elements are fixedly connected to the top of the rotating ring, and baffles are also symmetrically fixedly connected to the top of the rotating ring.

[0007] The bottom wall of the housing is provided with a drive mechanism for rotating the central shaft; the side wall of the housing is also provided with a rotation mechanism for rotating the ring; and the central shaft is provided with a cleaning mechanism for cleaning the filter element when the central shaft reverses.

[0008] In the purification mode, the rotating mechanism drives the rotating ring to rotate until the filter element is aligned with the filter hole, and the drive mechanism drives the central shaft to rotate in the forward direction. External gas is drawn in through the filter hole, purified by the filter element, and discharged from the exhaust port.

[0009] In cleaning mode, when the filter element resistance reaches the preset value, the rotating mechanism drives the rotating ring to rotate until the baffle is aligned with the filter hole, and the drive mechanism drives the central shaft to rotate in the opposite direction. External air is drawn in from the exhaust port, and at the same time, the cleaning mechanism starts when the central shaft reverses to clean the filter element.

[0010] The technical principles of the above solution are as follows:

[0011] In purification mode, the rotating ring aligns the filter element with the filter holes, the central shaft rotates clockwise, and the fan blades draw in outside air, which is then purified by the filter element and discharged from the top outlet. When the filter element resistance reaches a preset value, the rotating ring aligns the baffle with the filter holes, the central shaft reverses, and the airflow is drawn in from the outlet in the opposite direction, passing through the baffle and backwashing the filter element. At the same time, the reverse-driven cleaning mechanism is activated, applying physical vibration or shearing force to the filter element, using a dual action to remove accumulated dust.

[0012] The above approach has the following beneficial effects:

[0013] 1. This design integrates the filter element and baffle onto the same rotating ring. The rotation mechanism controls the ring angle, allowing switching between purification and cleaning modes. In purification mode, the filter element aligns with the filter holes, the central axis rotates clockwise, and the airflow follows a forward path to complete filtration. When the filter element resistance reaches a preset value, the rotating ring automatically switches to the position where the baffle aligns with the filter holes, the central axis reverses, and the airflow reverses to flush the filter element. Simultaneously, the cleaning mechanism activates, applying physical force to remove accumulated dust. This design eliminates the need to disassemble the filter element for cleaning, avoiding the interruption of cabin air circulation caused by the need for filter replacement in traditional solutions. It enhances the device's continuous operation capability in long-term confined environments, meeting the high reliability and uninterrupted operation requirements for life support in manned spacecraft.

[0014] 2. This solution establishes a dual cleaning mechanism in cleaning mode: On one hand, the central shaft reverses, causing the fan blades to draw in air in the opposite direction, drawing in external air from the top exhaust port. The baffle blocks this, creating a directional reverse airflow that washes over the filter element. On the other hand, the cleaning mechanism starts simultaneously when the central shaft reverses, applying physical vibration or shearing force to the filter element, loosening and removing accumulated dust. The two cleaning methods work synergistically, using airflow to remove surface dust and physically disrupting the adhesion between the dust and the filter material, increasing cleaning efficiency. Simultaneously, the baffle seals the filter pores in cleaning mode, preventing the detached dust from escaping in the reverse direction and reducing secondary pollution during the cleaning process.

[0015] 3. This solution integrates filter element position switching and airflow direction adjustment into the same rotating ring and central shaft. The start of the cleaning mechanism and the reverse rotation of the central shaft are linked to trigger the cleaning function; it simplifies the structure and reduces the number of moving parts; it enables intelligent management of the purification and cleaning process, reduces manual intervention, and meets the requirements of aerospace equipment for automation, lightweighting, and high reliability.

[0016] Furthermore, the drive mechanism includes a controller and a first drive component, the controller being electrically connected to the first drive component; the first drive component is fixedly connected to the bottom wall inside the housing, and the output shaft of the first drive component is coaxially fixedly connected to the central shaft.

[0017] Beneficial effects: By controlling the forward and reverse rotation and speed of the first drive component through the controller, not only can the air volume requirements during purification be met, but the reverse state of the cleaning mode can also be switched to ensure the synchronous and efficient execution of airflow reverse flushing and mechanical cleaning action, simplifying the transmission chain and improving the reliability of the device.

[0018] Furthermore, the rotating mechanism includes a second driving member fixedly connected to the inner wall of the housing, and a gear is fixedly connected to the output shaft of the second driving member on the same axis; an internal gear ring is fixedly connected to the bottom of the rotating ring, and the gear and the internal gear ring mesh with each other.

[0019] Beneficial effects: By utilizing the large diameter of the internal gear ring through the gear meshing transmission structure, the rotating ring can be smoothly and precisely controlled with a small driving torque, ensuring that the filter element and baffle are switched into place. It can maintain high positioning accuracy even in microgravity and vibration environments, ensuring the reliability of airflow path switching.

[0020] Furthermore, the cleaning mechanism includes slide rods symmetrically sliding on the rotating ring, with a buffer layer fixedly connected to the end of each slide rod near the filter element; a base is eccentrically sleeved on the outer side of the central shaft, with a groove inside the base; a locking rod is fixedly connected to the end of each slide rod near the base, and the locking rod slides in cooperation with the groove; a collection cover is symmetrically and detachably connected to the bottom of the housing; and a reversing component is provided on the outer wall of the central shaft to drive the base to move.

[0021] Beneficial effects: By utilizing the central axis to drive the eccentric base in reverse, the rotational motion is converted into the reciprocating linear motion of the slide bar, allowing for physical vibration of the filter element without additional power. The buffer layer design prevents damage to the filter media, and the collection hood effectively captures the shaken-off dust. The purely mechanical linkage structure is compact and reliable, suitable for aerospace environments, and achieves efficient in-situ self-cleaning.

[0022] Furthermore, the reversing assembly includes a ratchet fixedly connected to the inner wall of the base, a pawl hinged to the side wall of the central shaft, the pawl engaging with the ratchet; and a torsion spring sleeved on the hinge shaft between the pawl and the central shaft.

[0023] Beneficial effects: By setting up a unidirectional transmission structure with ratchet and pawl engaging, combined with a torsion spring providing preload, a mechanical interlock function is achieved: when the central shaft rotates forward, the pawl disengages from the ratchet and the cleaning mechanism does not operate; when it rotates backward, the pawl engages with the ratchet and the cleaning mechanism starts synchronously. This purely mechanical structure requires no additional electrical control signals, has a reliable response, and ensures that the cleaning action is triggered in reverse mode.

[0024] Furthermore, the upper sidewall of the shell is also circumferentially provided with several bypass holes, and the inner wall of the upper part of the shell is fixedly connected with a filter layer.

[0025] Beneficial effects: By setting bypass holes and filter layers, an auxiliary airflow channel is formed in cleaning mode, which enhances the reverse flushing effect and improves the efficiency of dust removal; at the same time, the filter layer pre-treats the bypass airflow to prevent pollutants from escaping, achieving the dual functions of efficient cleaning and mechanical protection.

[0026] Furthermore, a UV lamp is fixedly connected to the outer wall of the central shaft, the controller is electrically connected to the UV lamp, and a photocatalyst layer is coated on the outer wall of the filter layer.

[0027] Beneficial effects: By placing a rotating UV lamp on the central axis and coating the outer wall of the filter layer with a photocatalytic layer, uniform ultraviolet irradiation and photocatalytic synergistic purification are achieved. The controller turns the UV lamp on and off as needed, decomposing volatile organic compounds and killing microorganisms in purification mode, thus improving the air quality inside the chamber; at the same time, the rotating irradiation enhances the photocatalytic action area, improving purification efficiency.

[0028] Furthermore, a gas flow sensor is fixedly connected to the inner wall of the filter element. The controller is used to acquire the flow signal emitted by the gas flow sensor and control the opening and closing of the first and second driving components based on the flow signal.

[0029] Beneficial effects: By installing a gas flow sensor on the inner wall of the filter element, the filter element's blockage status is detected. The controller intelligently determines the triggering timing based on the flow signal, controlling the drive mechanism and rotation mechanism to switch working modes in coordination. This achieves automated control of purification and cleaning, reduces manual intervention, and effectively ensures the reliable operation of the device in long-term closed environments.

[0030] Furthermore, the filter element has a composite structure consisting of an outer HEPA layer, a middle activated carbon layer, and an inner photocatalyst layer.

[0031] Beneficial effects: By adopting a composite filter structure, it achieves synergistic purification through particulate matter interception, harmful gas adsorption, and photocatalytic decomposition. Each layer complements the other's function: the outer layer intercepts large particles and extends the lifespan of the middle layer; the middle layer adsorbs volatile organic compounds; and the inner photocatalyst decomposes residual pollutants under ultraviolet irradiation, thus improving purification efficiency and filter lifespan.

[0032] Furthermore, several baffles are fixedly connected to the top of the rotating ring, and the baffles are located between the filter element and the baffle.

[0033] Beneficial effects: By setting a partition between the filter element and the baffle, a zone separation is established, guiding the airflow to flush the surface of the filter element and improving cleaning efficiency; at the same time, the rigidity of the rotating ring structure is enhanced to prevent the filter element from deforming or shaking during rotation, ensuring a stable and consistent vibration cleaning effect and extending the service life of the filter element. Attached Figure Description

[0034] Figure 1 This is an isometric view of the intelligent aerospace air purification device of the present invention.

[0035] Figure 2 For the present invention Figure 1 The side sectional view in the middle.

[0036] Figure 3 For the present invention Figure 2 Top sectional view of the inverted component.

[0037] Figure 4 For the present invention Figure 3 Axonometric cross-sectional view of the cleaning facility.

[0038] Figure 5 For the present invention Figure 2 Enlarged view of part A in the middle.

[0039] Figure 6 For the present invention Figure 3 Enlarged view of section B.

[0040] The reference numerals in the accompanying drawings include: 1. Housing; 2. Central shaft; 3. Fan blade; 4. Filter element; 5. Rotary ring; 6. Baffle; 7. First driving component; 8. Second driving component; 9. Gear; 10. Internal gear ring; 11. Slide rod; 12. Buffer layer; 13. Base; 14. Locking rod; 15. Racket tooth; 16. Pawl; 17. Filter layer; 18. UV lamp; 19. Partition. Detailed Implementation

[0041] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] The following detailed description illustrates the specific implementation method:

[0045] Example 1:

[0046] As attached Figures 1-6 As shown: An intelligent air purification device for aerospace applications includes a housing 1, a central shaft 2 rotatably fitted inside the housing 1, and a fan blade 3 fixedly connected to the central shaft 2 by screws; symmetrical filter holes are opened on the side wall of the housing 1, and filter elements 4 are also symmetrically arranged inside the housing 1; several discharge ports are opened on the top of the housing 1; a rotating ring 5 is rotatably fitted on the inner wall of the housing 1, and the filter elements 4 are fixedly connected to the top of the rotating ring 5 by screws; baffles 6 are also symmetrically fixedly connected to the top of the rotating ring 5 by screws.

[0047] The bottom wall of the housing 1 is provided with a drive mechanism for rotating the central shaft 2; the side wall of the housing 1 is also provided with a rotation mechanism for rotating the rotating ring 5; the central shaft 2 is provided with a cleaning mechanism for cleaning the filter element 4 when the central shaft 2 reverses.

[0048] In the purification mode, the rotating mechanism drives the rotating ring 5 to rotate until the filter element 4 is aligned with the filter hole, and the driving mechanism drives the central shaft 2 to rotate in the forward direction. External gas is drawn in from the filter hole, purified by the filter element 4, and discharged from the exhaust port.

[0049] In cleaning mode, when the resistance of filter element 4 reaches the preset value, the rotating mechanism drives the rotating ring 5 to rotate until the baffle 6 is aligned with the filter hole, and the drive mechanism drives the central shaft 2 to rotate in the opposite direction. External air is drawn in from the exhaust port, and at the same time, the cleaning mechanism starts when the central shaft 2 reverses to clean the filter element 4.

[0050] Combination Figure 2 As shown, the drive mechanism includes a controller and a first drive component 7, which are electrically connected. The first drive component 7 is bolted to the bottom wall of the housing 1, and the output shaft of the first drive component 7 is coaxially fixed to the central shaft 2 via a coupling. In this embodiment, the first drive component 7 is a stepper motor, and the controller is one or more of a PLC, CPU, or MCU.

[0051] Combination Figure 5 As shown, the rotating mechanism includes a second driving component 8 bolted to the inner wall of the housing 1, and a gear 9 coaxially and keyed to the output shaft of the second driving component 8; an internal gear ring 10 is screwed to the bottom of the rotating ring 5, and the gear 9 and the internal gear ring 10 mesh with each other. In this embodiment, the second driving component 8 is a servo motor.

[0052] Combination Figure 3 and Figure 4 As shown, the cleaning mechanism includes slide rods 11 symmetrically sliding on the rotating ring 5. In this embodiment, a retaining plate is also screwed to the rotating ring 5. The retaining plate is located on both sides of the slide rod 11, so that the slide rod 11 maintains a linear movement trajectory. A buffer layer 12 is fixedly bonded to the end of the slide rod 11 near the filter element 4. A base 13 is eccentrically sleeved on the outer side of the central shaft 2. The base 13 has a groove inside. A retaining rod 14 is screwed to the end of the slide rod 11 near the base 13. The retaining rod 14 slides in cooperation with the groove. A collection cover is symmetrically and detachably connected to the bottom of the housing 1. A reversing component for driving the base 13 to move is provided on the outer wall of the central shaft 2.

[0053] Combination Figure 6 As shown, the reversing assembly includes a ratchet 15 fixedly connected to the inner wall of the base 13 by screws, and a pawl 16 hinged to the side wall of the central shaft 2, the pawl 16 engaging with the ratchet 15; a torsion spring is sleeved on the hinge axis between the pawl 16 and the central shaft 2. In this embodiment, the torsion spring is used to provide torque so that the pawl 16 always remains in contact with the ratchet 15.

[0054] The specific implementation process is as follows: The air purification device in this embodiment includes a purification mode and a cleaning mode. The two modes are linked and transitioned by switching the position of the rotating ring 5. In the purification mode, the controller controls the second driving component 8 to operate. The output shaft of the second driving component 8 drives the gear 9 to rotate. The gear 9 drives the rotating ring 5 to rotate around the central axis 2 through meshing with the internal gear ring 10. When the rotating ring 5 rotates to the preset position, the filter element 4 fixed on the top of the rotating ring 5 aligns with the filter hole on the side wall of the housing 1. At this time, the controller controls the second driving component 8 to stop, completing the mode positioning.

[0055] Subsequently, the controller activates the first drive unit 7. The output shaft of the first drive unit 7 drives the central shaft 2 to rotate in the forward direction via a coupling. The fan blades 3, fixed on the central shaft 2, rotate in the forward direction accordingly, generating negative pressure inside the housing 1. External air enters the housing 1 through the filter holes on the side wall of the housing 1 and passes through the filter element 4 in sequence for purification. The purified air is then discharged into the chamber through the exhaust port at the top of the housing 1, completing the cycle of purification.

[0056] During this process, when the central shaft 2 rotates in the forward direction, the pawl 16 is pressed by the inclined surface of the ratchet 15, overcoming the torsion spring torque, causing the pawl 16 to disengage from the ratchet 15. The base 13 does not rotate with the central shaft 2, and the cleaning mechanism does not operate, ensuring no additional energy consumption in the purification mode. As the purification mode operation time accumulates, the filter element 4 gradually accumulates dust and becomes clogged, increasing the airflow resistance through the filter element 4. When the resistance of the filter element 4 reaches a preset threshold, it is determined that the resistance of the filter element 4 meets the cleaning requirements, triggering the cleaning mode.

[0057] The controller first stops the operation of the first drive component 7, causing the central shaft 2 to stop rotating; then it controls the second drive component 8 to rotate, and the gear 9 drives the internal gear ring 10 to rotate the rotating ring 5. The rotating ring 5 drives the filter element 4 and the baffle 6 on its top to rotate synchronously until the baffle 6 rotates to a position aligned with the filter holes. At this time, the baffle 6 covers the filter holes to prevent dust from escaping during the cleaning process.

[0058] After the position switch is completed, the controller controls the first drive component 7 to start in reverse, driving the central shaft 2 to rotate in the opposite direction. The fan blades 3 rotate in the opposite direction accordingly, generating a reverse airflow inside the housing 1. External air is drawn into the housing 1 through the exhaust port at the top of the housing 1, and the airflow reverses to wash the surface of the filter element 4, washing away the dust attached to the windward side of the filter element 4.

[0059] As the central shaft 2 rotates in the reverse direction, the cleaning mechanism is activated by the reversing assembly. The specific linkage process is as follows: When the central shaft 2 rotates in the reverse direction, the pawl 16, hinged to the side wall of the central shaft 2, remains in contact with the ratchet 15 on the inner wall of the base 13 under the action of the torsion spring. As the central shaft 2 rotates in the reverse direction, the pawl 16 engages with the ratchet 15, the rotational power of the central shaft 2 is locked and transmitted to the base 13, causing the base 13 to rotate synchronously with the central shaft 2.

[0060] Because the base 13 is eccentrically fitted outside the central shaft 2, and has a groove inside, the locking rod 14 fixed to the end of the slide rod 11 slides within the groove; therefore, when the base 13 rotates in the opposite direction with the central shaft 2, the groove rotates eccentrically with the base 13, driving the locking rod 14 to drive the slide rod 11 to slide back and forth along the rotating ring 5. A buffer layer 12 is fixedly bonded to one end of the slide rod 11 near the filter element 4, which applies physical impact to the surface of the filter element 4 during the reciprocating sliding process, generating a vibration effect.

[0061] The reciprocating vibration of the slide bar 11 and the scouring effect of the reverse airflow create a dual cleaning synergy: the reverse airflow washes away floating dust downwards, and the mechanical vibration breaks the adhesion between the accumulated dust and the filter element 4, causing the dust to detach. The detached dust falls into the detachable collection hood at the bottom of the housing 1 under gravity or airflow, facilitating unified cleaning during ground maintenance.

[0062] This solution integrates the functions of filter element 4, mode switching, airflow reverse flushing, and vibration cleaning into a single mechanical structure through the mechanical position switching of rotating ring 5, the forward and reverse rotation control of central shaft 2, and the unidirectional transmission mechanism of pawl 16 and ratchet 15. The components are interconnected: rotating ring 5 drives the filter element 4 to switch positions with baffle 6, and the reverse rotation of central shaft 2 simultaneously drives pneumatic and mechanical cleaning, achieving automatic connection between purification and cleaning, reducing manual intervention, and resulting in a compact and highly reliable structure.

[0063] Example 2:

[0064] As attached Figure 1 and Figure 2 As shown, the difference from Embodiment 1 is that the upper sidewall of the housing 1 is also provided with several bypass holes in the circumference, and the inner wall of the upper part of the housing 1 is fixedly connected with a filter layer 17 by screws; in this embodiment, the filter layer 17 is used to block the dust inside the housing 1, so that only clean gas can pass through.

[0065] The specific implementation process is as follows: When the device switches to cleaning mode, the central shaft 2 rotates in the opposite direction, and the fan blades 3 rotate in the opposite direction, generating a reverse airflow inside the housing 1. External clean air is drawn in from the exhaust port at the top of the housing 1, and the drawn-in air flows downward, carrying the detached dust downward after passing through the filter element 4.

[0066] During this process, the filter layer 17 acts as a barrier. When the reverse airflow carries the dust upwards, the filter layer 17 prevents the dust from escaping into the cabin environment through the bypass hole, ensuring that only clean gas can flow upwards through the filter layer 17. The dust is effectively intercepted inside the shell 1 and eventually falls into the bottom collection hood, ensuring the isolation and collection of pollutants during the operation of the device.

[0067] Example 3:

[0068] As attached Figure 2As shown, the difference from Embodiment 2 is that a UV lamp 18 is fixedly connected to the outer wall of the central shaft 2 with screws, the controller is electrically connected to the UV lamp 18, and a photocatalyst layer is coated on the outer wall of the filter layer 17.

[0069] The specific implementation process is as follows: During device operation, the UV lamp 18, fixed to the outer wall of the central shaft 2, rotates synchronously with the central shaft 2. The controller controls the opening and closing of the UV lamp 18 according to the requirements of the purification mode or cleaning mode. The outer wall of the filter layer 17 is coated with a photocatalyst layer. When airflow passes through it, the UV lamp 18 irradiates the photocatalyst layer to generate strong oxidizing free radicals, which decompose volatile organic compounds in the air and kill microorganisms, achieving photocatalytic synergistic purification. At the same time, the bypass holes circumferentially opened on the upper side wall of the shell 1 form an auxiliary airflow channel in the cleaning mode, ensuring that the purification work of the device is not interrupted and improving the cleaning efficiency.

[0070] Example 4:

[0071] The difference from Embodiment 3 is that a gas flow sensor is fixedly bonded to the inner wall of the filter element 4. The controller is used to acquire the flow signal emitted by the gas flow sensor and control the opening and closing of the first driving component 7 and the second driving component 8 based on the flow signal.

[0072] The specific implementation process is as follows: After the device is started, the gas flow sensor monitors the gas flow rate through the filter element 4 in real time and transmits the flow signal to the controller. In purification mode, the controller compares the received real-time flow value with the preset standard flow threshold: if the flow signal is stable and within the normal range, it indicates that the filter element 4 has good permeability. The controller maintains the continuous operation of the first drive component 7 (driving the central shaft 2 to rotate forward) and the second drive component 8 (keeping the filter element 4 aligned with the filter holes) to ensure efficient purification. Once dust accumulates on the surface of the filter element 4, causing increased resistance, the flow signal detected by the sensor will gradually decrease. When the signal is lower than the preset clogging threshold and remains so for a certain period of time, the controller determines that the filter element 4 needs cleaning, and then issues a command to cut off the forward rotation power of the first drive component 7 and initiate the mode switching program.

[0073] During the linkage process of entering the cleaning mode, the controller first instructs the second drive component 8 to rotate the rotating ring 5, causing the baffle 6 to block the filter holes and the filter element 4 to rotate away from the air inlet position. Subsequently, the controller instructs the first drive component 7 to start in reverse, causing the central shaft 2 to reverse to generate a backflushing airflow. During this stage, the gas flow sensor continues to work, monitoring the smoothness of the backflushing airflow and the cleaning effect. When the cleaning process has progressed to a certain extent, or in a subsequent purification attempt, if the flow signal fed back by the gas flow sensor rises back to the standard range, the controller determines that the cleaning is complete, stops the reverse rotation of the first drive component 7, and controls the second drive component 8 to reset the filter element 4 to the filter hole alignment state, switching back to the purification mode. If the flow signal still has not recovered, the controller can control the device to repeat the above cleaning cycle or issue a maintenance alarm, thereby realizing intelligent linkage between purification and cleaning.

[0074] Example 5:

[0075] The difference from Example 4 is that filter element 4 is a composite structure of outer HEPA, middle activated carbon and inner photocatalyst.

[0076] The specific implementation process is as follows: In purification mode, the central shaft 2 rotates in the forward direction, and the fan blades 3 draw in external air through the filter holes. The airflow first contacts the outer HEPA layer of the filter element 4. The HEPA layer intercepts suspended particulate matter, dust, bacteria, and microbial aerosols in the air, removing particles and ensuring that the airflow entering the middle layer is clean.

[0077] Air filtered through the HEPA layer enters the middle activated carbon layer. The activated carbon layer utilizes its rich microporous structure and strong adsorption capacity to adsorb volatile organic compounds, odors, and harmful gases in the air, effectively reducing the concentration of pollutants inside the cabin.

[0078] The airflow continues to penetrate into the inner photocatalyst layer. At this time, the UV lamp 18, fixed to the outer wall of the central shaft 2, rotates synchronously with the central shaft 2, uniformly irradiating the inner photocatalyst layer of the filter element 4. Under ultraviolet light excitation, the photocatalyst layer generates strong oxidizing free radicals, which deeply decompose the residual volatile organic compounds that have penetrated the first two layers, while killing any possible residual microorganisms, achieving synergistic purification.

[0079] In cleaning mode, the central shaft 2 rotates in the opposite direction, and the cleaning mechanism applies physical vibration to the filter element 4, while a reverse airflow washes the surface of the filter element 4. At this time, the composite structure of the filter element 4 plays the following role in the cleaning process:

[0080] Dust adhering to the surface of the outer HEPA layer is stripped off by physical vibration and reverse airflow, falling into the bottom collection hood. The middle activated carbon layer, through its microporous structure, is desorbed by reverse airflow, restoring some of its adsorption capacity and extending its lifespan. During the cleaning process, the inner photocatalyst layer is continuously irradiated by UV lamp 18. Under ultraviolet light, the photocatalyst decomposes the organic matter desorbed by the activated carbon layer, preventing it from re-adhering to the filter element 4, thus achieving degradation during the cleaning process and reducing secondary pollution.

[0081] Example 6:

[0082] As attached Figure 1 As shown, the difference from Embodiment 5 is that the top of the rotating ring 5 is fixedly connected with several partitions 19 by screws, and the partitions 19 are located between the filter element 4 and the baffle 6.

[0083] The specific implementation process is as follows: During device operation, the baffles 19 fixed to the top of the rotating ring 5 rotate synchronously with the rotating ring 5, filling and isolating the space between the filter element 4 and the baffle 6. When the rotating ring 5 drives the filter element 4 and the baffle 6 to switch modes (such as from the purification position to the clean position), these baffles 19 act as physical barriers, separating the dust-laden airflow area generated by the filter element 4 from the closed area of ​​the baffle 6. At the same time, under high-speed rotation or back-flushing vibration conditions, the baffles 19 enhance the overall rigidity of the rotating ring 5 structure, suppress the fluttering caused by airflow pulsation between the filter element 4 and the baffle 6, and ensure the positional accuracy and sealing stability of the two during the switching process.

[0084] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An intelligent air purification device for aerospace applications, comprising a housing (1), a central shaft (2) rotatably fitted inside the housing (1), and fan blades (3) fixedly connected to the central shaft (2); characterized in that, The shell (1) has symmetrically opened filter holes on its side wall, and the shell (1) also has symmetrically arranged filter elements (4) inside. The shell (1) has several discharge ports on its top. The inner wall of the shell (1) is rotatably fitted with a rotating ring (5), and the filter element (4) is fixedly connected to the top of the rotating ring (5). The top of the rotating ring (5) is also symmetrically fixedly connected with a baffle (6). The inner bottom wall of the housing (1) is provided with a drive mechanism for driving the central shaft (2) to rotate; the side wall of the housing (1) is also provided with a rotation mechanism for driving the rotating ring (5) to rotate; the central shaft (2) is provided with a cleaning mechanism for cleaning the filter element (4) when the central shaft (2) reverses; The cleaning mechanism includes a slide rod (11) symmetrically sliding on the rotating ring (5), and a buffer layer (12) is fixedly connected to the end of the slide rod (11) near the filter element (4); a base (13) is eccentrically sleeved on the outside of the central shaft (2), and a groove is opened inside the base (13); a locking rod (14) is fixedly connected to the end of the slide rod (11) near the base (13), and the locking rod (14) slides in the groove; a collection cover is symmetrically and detachably connected to the bottom of the housing (1); a reversing component is provided on the outer wall of the central shaft (2) for driving the base (13) to move; The reversing assembly includes a ratchet (15) fixedly connected to the inner wall of the base (13), a pawl (16) hinged to the side wall of the central shaft (2), the pawl (16) meshing with the ratchet (15); a torsion spring is sleeved on the hinge shaft between the pawl (16) and the central shaft (2); In the purification mode, the rotating mechanism drives the rotating ring (5) to rotate until the filter element (4) is aligned with the filter hole, and the driving mechanism drives the central shaft (2) to rotate in the positive direction. External gas is drawn in from the filter hole, purified by the filter element (4), and discharged from the outlet. In cleaning mode, when the resistance of the filter element (4) reaches the preset value, the rotating mechanism drives the rotating ring (5) to rotate until the baffle (6) is aligned with the filter hole, the driving mechanism drives the central shaft (2) to rotate in the opposite direction, and external air is drawn in from the exhaust port. At the same time, the cleaning mechanism starts when the central shaft (2) reverses to clean the filter element (4).

2. The intelligent aerospace air purification device according to claim 1, characterized in that, The drive mechanism includes a controller and a first drive component (7). The controller and the first drive component (7) are electrically connected. The first drive component (7) is fixedly connected to the bottom wall of the housing (1). The output shaft of the first drive component (7) is coaxially fixedly connected to the central shaft (2).

3. The intelligent aerospace air purification device according to claim 2, characterized in that, The rotating mechanism includes a second drive member (8) fixedly connected to the inner wall of the housing (1), and a gear (9) is fixedly connected to the output shaft of the second drive member (8); an internal gear ring (10) is fixedly connected to the bottom of the rotating ring (5), and the gear (9) and the internal gear ring (10) mesh with each other.

4. The intelligent aerospace air purification device according to claim 3, characterized in that, The upper sidewall of the shell (1) is also provided with several bypass holes in the circumferential direction, and the inner wall of the upper part of the shell (1) is fixedly connected with a filter layer (17).

5. The intelligent aerospace air purification device according to claim 4, characterized in that, A UV lamp (18) is fixedly connected to the outer wall of the central shaft (2), the controller is electrically connected to the UV lamp (18), and a photocatalyst layer is coated on the outer wall of the filter layer (17).

6. The intelligent aerospace air purification device according to claim 5, characterized in that, A gas flow sensor is fixedly connected to the inner wall of the filter element (4). The controller is used to obtain the flow signal emitted by the gas flow sensor and control the opening and closing of the first drive unit (7) and the second drive unit (8) based on the flow signal.

7. The intelligent aerospace air purification device according to claim 6, characterized in that, The filter element (4) is a composite structure consisting of an outer HEPA layer, a middle activated carbon layer, and an inner photocatalyst layer.

8. The intelligent aerospace air purification device according to claim 7, characterized in that, Several partitions (19) are fixedly connected to the top of the rotating ring (5), and the partitions (19) are located between the filter element (4) and the baffle (6).

Images