Air disinfection and purification device based on ultraviolet irradiation

Abstract

The invention relates to the technical field of ultraviolet disinfection, in particular to an air disinfection and purification device based on ultraviolet irradiation, which comprises a casing, and a cover with an air inlet is assembled and connected to the bottom of the casing; an ultraviolet disinfection structure is installed in an air inlet area formed between the machine shell and the machine cover. The ultraviolet disinfection structure comprises a U-shaped reflecting cover plate, a baffle plate, a central pipeline and an ultraviolet radiation assembly; baffles are fixed to the two ends of the U-shaped reflecting cover plate, the U-shaped reflecting cover plate and the baffles are fixedly assembled on the inner wall of the front panel of the machine shell, and the U-shaped end of the U-shaped reflecting cover plate is far away from the multiple air outlet light emitting openings in the front panel of the machine shell. Air can be effectively disinfected and purified through ultraviolet light emitted by the multiple air outlet light emitting openings in the front panel of the machine shell, the air can be sucked into the disinfection and purification device to be effectively disinfected and sterilized, a dual-purification mechanism is achieved, and the more thorough disinfection effect can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of ultraviolet disinfection, and more specifically to an air disinfection and purification device based on ultraviolet irradiation. Background Art

[0002] In daily life, different kinds of viruses and germs float in the air every day, especially in winter and spring every year, viruses and germs that are harmful to humans float in the air, which can easily spread in houses, school buildings, offices, factories, airplanes, ships, trains, cars and other spaces. Existing air sanitation equipment is mainly air filtration type air purification equipment, but air filtration type purification equipment cannot completely filter out viruses in the air and cannot protect people from small viruses and germs in the air.

[0003] Ultraviolet light is a light with a frequency of 750THz to 30PHz in sunlight, corresponding to a wavelength of 400nm to 10nm (nanometers) in a vacuum. Ultraviolet light can be used to kill bacterial propagules, spores, mycobacteria, coronaviruses, fungi, rickettsia and chlamydia, etc. All surfaces, water and air contaminated by the above viruses can be disinfected by ultraviolet light. However, the human body cannot be under ultraviolet light for a long time. The main function of ultraviolet light is sterilization and disinfection. After the human body is exposed to it, it may irritate the skin and cause skin damage. There are two forms of existing ultraviolet irradiation air disinfection equipment. One is an open ultraviolet irradiation air disinfection equipment. The ultraviolet light of this equipment directly irradiates the disinfection space. People must evacuate the disinfection space, otherwise it will cause harm to people. The air disinfection and purification equipment in which people can exist in the ultraviolet disinfection space cannot effectively kill viral pathogens because the ultraviolet irradiation intensity is very weak. Therefore, the existing ultraviolet open irradiation air disinfection equipment cannot be quickly and effectively disinfected and sterilized in real time in the space with people. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an air disinfection and purification device based on ultraviolet irradiation.

[0005] The technical solution adopted by the present invention is:

[0006] An air disinfection and purification device based on ultraviolet irradiation comprises: a casing, a cover with an air inlet assembled and connected at the bottom of the casing; an ultraviolet disinfection structure is installed in the air inlet area formed between the casing and the cover; the ultraviolet disinfection structure comprises: a U-shaped reflector plate, a baffle, a central pipeline and an ultraviolet irradiation component; baffles are fixed at both ends of the U-shaped reflector plate, the U-shaped reflector plate and the baffle are fixedly assembled on the inner wall of the casing front panel, and the U-shaped end of the U-shaped reflector plate is arranged away from multiple air outlets and light emission ports on the casing front panel; the central pipeline is rotatably connected to the baffle, an air guide port is provided on the pipe body of the central pipeline passing through the outside of the U-shaped reflector plate, and an air dispersion port and an ultraviolet irradiation component are provided on the pipe body of the central pipeline inserted into the U-shaped reflector plate.

[0007] Furthermore, a plurality of air inlets are provided, and an air inlet fan and an air inlet filter are installed in each air inlet, and the air inlet filter is located below the air inlet fan.

[0008] Furthermore, the central pipeline includes: a central cross tube, which is sealed and arranged on two baffles and side panels on the left and right sides of the casing; multiple air guide ports on the central cross tube are located between a baffle and a side panel of the casing, and multiple air dispersion ports on the central cross tube are located in the irradiation and sterilization area formed between the U-shaped reflector plate, the two baffles and the front panel of the casing; the driven wheel on the central cross tube is synchronously connected to the driving wheel on the driving motor through a driving belt, and the driving motor is assembled and connected in the air intake area.

[0009] Furthermore, the central pipeline also includes: a pre-filter tube, the inner end of the pre-filter tube is inserted into the annular slot at the left end of the central transverse tube, the pre-filter hole on the pre-filter tube is located on the inner side of multiple air guide ports of the central transverse tube, a friction ring is fixed to the outer end of the pre-filter tube, the friction ring is frictionally connected to the friction wheel, the friction wheel and the driven gear are both assembled and fixed on the transverse axis, the middle part of the transverse axis is rotated on the side panel of the casing, and the driving gear fixed on the central transverse tube meshes with the driven gear.

[0010] Furthermore, the central pipeline also includes: a limiting ring groove is provided at the outer end of the pre-filter tube, the friction ring is slidably fitted on the arc-shaped side plate of the outer wall of the casing, and the limiting column threadedly connected on the arc-shaped side plate is inserted in the limiting ring groove.

[0011] Furthermore, the central pipeline also includes: a rear filter tube, the inner end of the rear filter tube is inserted into the central transverse tube through the right end of the central transverse tube, the rear filter hole on the rear filter tube is located on the inner side of the multiple air diffusion ports of the central transverse tube, and a locking frame is fixed to the outer end of the rear filter tube. The locking bolt rotatably connected to the locking frame is screwed on the outer wall of the casing, and the aperture of the rear filter hole is smaller than the aperture of the front filter hole.

[0012] Furthermore, a reflective layer is provided on the inner side surfaces of the U-shaped reflector plate and the baffle.

[0013] Furthermore, the ultraviolet irradiation assembly includes: an ultraviolet lamp tube, a short shaft, a lamp holder, a left lamp holder, a right lamp holder, a small gear and an inner gear ring; the left lamp holder and the right lamp holder are relatively assembled and fixed on the central cross tube, and are located on the inner side of the U-shaped reflector plate; the left lamp holder and the right lamp holder are both provided with multiple short shafts with lamp holders at the inner ends, and the ultraviolet lamp tube is fixedly installed between the two relatively arranged lamp holders, and the small gear fixed on the short shaft is meshed with the inner gear ring fixed on the inner wall of the baffle.

[0014] Furthermore, the ultraviolet irradiation assembly also includes: a plurality of arc-shaped heat exchange plates fixed between the left lamp holder and the right lamp holder, the inner arc surface of the arc-shaped heat exchange plate is provided with a cleaning brush that slides with the ultraviolet lamp tube, and the outer arc surface of the arc-shaped heat exchange plate is arranged toward the air diffusion port of the central horizontal tube.

[0015] Furthermore, the air disinfection and purification device based on ultraviolet irradiation also includes: a light guide plate assembly, the light guide plate assembly includes: multiple rotating shafts rotated at the lower end of the inner side of the multiple air outlets and light emitting ports, the multiple rotating shafts are located in the multiple air outlets and light guide plate bodies are fixed on the shaft bodies, the upper surface of the light guide plate body is provided with a reflective coating, the worm gears fixed on the multiple rotating shafts are meshed with the worm screws rotated in the casing, and the worm screws are connected to the light guide motor assembled and connected in the casing.

[0016] It can be seen from the above scheme that the beneficial effects of the present invention are:

[0017] The air disinfection and purification device based on ultraviolet irradiation of the present invention can not only effectively disinfect and purify the air through the ultraviolet light emitted by the multiple air outlets on the front panel of the casing, but also can draw the air into the interior of the disinfection and purification device, and effectively disinfect and sterilize the air through the ultraviolet irradiation component. It has a dual purification mechanism, is more effective than single surface irradiation, can achieve a more thorough disinfection effect, and is effectively suitable for places that require a highly clean environment.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 Schematic diagram of an air disinfection and purification device provided in an embodiment of the present invention Figure 1 ;

[0021] Figure 2 Schematic diagram of an air disinfection and purification device provided in an embodiment of the present invention Figure 2 ;

[0022] Figure 3 A cross-sectional view of an air disinfection and purification device provided in an embodiment of the present invention Figure 1 ;

[0023] Figure 4 A cross-sectional view of an air disinfection and purification device provided in an embodiment of the present invention Figure 2 ;

[0024] Figure 5 A partial schematic diagram of an air disinfection and purification device provided in an embodiment of the present invention;

[0025] Figure 6 A schematic diagram of an ultraviolet disinfection structure provided by an embodiment of the present invention;

[0026] Figure 7 A schematic diagram of a U-shaped reflector plate and a baffle provided in an embodiment of the present invention;

[0027] Figure 8 A schematic diagram of a central pipeline and a UV irradiation assembly provided in an embodiment of the present invention;

[0028] Fig. 9 A partial schematic diagram of the central pipeline provided in an embodiment of the present invention Figure 1 ;

[0029] Fig.10 A partial schematic diagram of the central pipeline provided in an embodiment of the present invention Figure 2 ;

[0030] Fig.11 A schematic diagram of an ultraviolet irradiation assembly provided by an embodiment of the present invention;

[0031] Fig.12 A schematic diagram of a light guide plate assembly provided in an embodiment of the present invention.

[0032] Icons: casing 1; cover 2; UV disinfection structure 3; U-shaped reflector plate 100; baffle 200; central pipeline 300; central transverse pipe 301; air guide port 302; air diffusion port 303; driven wheel 304; front filter tube 305; front filter hole 306; friction ring 307; friction wheel 308; driven gear 309; horizontal axis 310; driving gear 311; rear filter tube 312; rear filter hole 313; locking frame 314; locking bolt 315; UV irradiation assembly 400; UV lamp tube 401; short axis 402; lamp holder 403; left lamp holder 404; right lamp holder 405; small gear 406; inner gear ring 407; arc heat exchange plate 408; air outlet 4; driving motor 5; arc side plate 6; rotating shaft 7; light guide plate body 8; worm gear 9; worm 10. DETAILED DESCRIPTION

[0033] In order to clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention, it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0035] See also Figure 1-Figure 12 The present invention discloses an air disinfection and purification device based on ultraviolet irradiation, comprising: a housing 1, a cover 2 with an air inlet assembled and connected at the bottom of the housing 1; an ultraviolet disinfection structure 3 is installed in the air inlet area formed between the housing 1 and the cover 2; the ultraviolet disinfection structure 3 comprises: a U-shaped reflector plate 100, a baffle 200, a central pipeline 300 and an ultraviolet irradiation component 400; baffles 200 are fixed at both ends of the U-shaped reflector plate 100, the U-shaped reflector plate 100 and the baffle 200 are fixedly assembled on the inner wall of the front panel of the housing 1, and the U-shaped reflector plate 100 has a U-shaped The end is far away from multiple air outlets and light-emitting ports 4 on the front panel of the casing 1; the central pipeline 300 is rotatably connected to the baffle 200, and the central pipeline 300 passes through the tube body outside the U-shaped reflector plate 100 and is provided with an air guide port 302, and the central pipeline 300 is inserted into the tube body inside the U-shaped reflector plate 100 and is provided with a diffuser port 303 and an ultraviolet irradiation component 400; there are multiple air inlets, and an air intake fan and an air intake filter are installed in each air inlet, and the air intake filter is located below the air intake fan; the inner side surfaces of the U-shaped reflector plate 100 and the baffle 200 are both provided with a reflective layer.

[0036] The working principle and technical effects of the above technical solution are as follows:

[0037] The air disinfection and purification device based on ultraviolet irradiation of the present invention needs to be installed at a high horizontal height when in use to prevent the ultraviolet rays emitted through the multiple air outlet ports 4 from irradiating the human body and causing damage; when disinfecting and purifying the air, the air intake fan in the air intake port is turned on, and the air enters the air intake area formed between the housing 1 and the cover 2 after preliminary filtration through the air intake filter. The air can pass through the central pipeline 300 to the air guide port 302 of the outer tube body of the U-shaped reflector plate 100 to enter the interior of the central pipeline 300, and is inserted into the U-shaped reflector plate 10 through the central pipeline 300. The air diffuser 303 of the inner tube body enters into the purification area formed between the U-shaped reflector plate 100, the baffle plate 200 and the front panel of the housing 1, so as to be irradiated and sterilized by the ultraviolet irradiation component 400, and the sterilized air can be output through the multiple air outlet light emitting ports 4; in addition, the multiple air outlet light emitting ports 4 are also used to guide the ultraviolet light generated by the ultraviolet irradiation component 400, and the ultraviolet light emitted by the multiple air outlet light emitting ports on the front panel of the housing effectively disinfects and purifies the air, which has a dual purification mechanism, can achieve a more thorough disinfection effect, and is effectively suitable for places that require a highly clean environment;

[0038] In an air disinfection and purification device based on ultraviolet irradiation of the present invention, the U-shaped design of the U-shaped reflector plate 100 increases the reflection path of ultraviolet rays, so that the ultraviolet rays can disinfect the air at a longer distance, thereby improving the disinfection efficiency. Two baffles 200 are fixed at both ends of the U-shaped reflector plate 100 to form a closed disinfection space to prevent unsterilized air from passing directly; the air diffuser 303 is located at the part where the central pipeline 300 is inserted into the U-shaped reflector plate 100, and is used to evenly disperse the air around the ultraviolet irradiation component 400 to ensure that the air is fully exposed to ultraviolet rays. The ultraviolet irradiation component 400 is installed in Ultraviolet rays are generated on the central pipeline 300 to deeply disinfect the air; the air disinfected by ultraviolet rays is discharged through the multiple air outlets 4 on the front panel of the casing 1. The air outlets 4 not only play the role of exhaust, but also can further use ultraviolet rays to disinfect the exhausted air. The multiple disinfection mechanisms ensure the comprehensive purification of the air; in addition, in the present invention, the U-shaped end of the U-shaped reflector plate 100 is arranged away from the multiple air outlets 4 on the front panel of the casing 1, so that the ultraviolet rays are reflected multiple times inside the U-shape, which increases the action time of the ultraviolet rays in the air, not only improves the utilization rate of the ultraviolet rays, but also enhances the disinfection effect. The U-shaped design of the U-shaped reflector plate 100 helps to evenly disperse the air inside, making the air more uniform when irradiated by ultraviolet rays, ensuring that the air in each part can be fully disinfected.

[0039] The central pipeline 300 includes: a central transverse tube 301, which is sealed and rotated between two baffles 200 and the side panels on the left and right sides of the casing 1; multiple air guide ports 302 on the central transverse tube 301 are located between a baffle 200 and a side panel of the casing 1, and multiple air diffusion ports 303 on the central transverse tube 301 are located in the irradiation and sterilization area formed between the U-shaped reflector plate 100, the two baffles 200 and the front panel of the casing 1; the driven wheel 304 on the central transverse tube 301 is synchronously connected with the driving wheel on the driving motor 5 through a driving belt, and the driving motor 5 is assembled and connected in the air intake area. After the driving motor 5 is started, it drives the driving wheel to rotate, and the driving wheel synchronously drives the driven wheel 304 to rotate through the driving belt, and the driven wheel 304 drives the central transverse tube 301 to rotate, thereby driving the ultraviolet irradiation component 400 to rotate in the U-shaped reflector plate 100 to achieve rotational motion irradiation, and when the central transverse tube 301 rotates, it drives the multiple air diffusion ports 303 to rotate, thereby dispersing the air more evenly into the irradiation and sterilization area.The central transverse tube 301 is driven to rotate by the driving motor 5, and the air diffuser 303 rotates accordingly, so that the air is more evenly distributed in the irradiation and sterilization area. The rotational motion ensures that every part of the air can be fully exposed to the ultraviolet rays, avoiding dead corners of air flow, thereby significantly improving the disinfection efficiency; the rotational distribution of the air diffuser 303 makes the air flow smoother, avoiding the formation of stagnant areas of air in the disinfection area, and ensuring a more comprehensive disinfection effect; the ultraviolet irradiation component 400 is installed on the central transverse tube 301. As the central transverse tube 301 rotates, the ultraviolet rays can cover the entire space inside the U-shaped reflector plate 100. This dynamic irradiation method avoids the irradiation of ultraviolet rays at a fixed position. The sterilization effect is significantly enhanced because the ultraviolet rays can dynamically adjust the irradiation path due to the rotation of the ultraviolet irradiation component 400, ensuring that the air is exposed to the ultraviolet rays for a longer time, thereby improving the comprehensiveness and thoroughness of the disinfection. The central transverse tube 301 integrates the air guide port 302, the air diffuser port 303 and the ultraviolet irradiation component 400, and is connected to the drive motor 5 through the driven wheel 304. The overall structure is compact and occupies a small space. The rotation of the air diffuser port 303 not only realizes the uniform dispersion of the air, but also avoids the problem of uneven air flow that may be caused by the traditional fixed air diffuser port by dynamically adjusting the airflow direction. The dynamically balanced airflow distribution makes the air more stable in the disinfection area, thereby improving the disinfection effect. The overall disinfection effect is achieved; the continuous rotation of the ultraviolet component 400 in the U-shaped reflector is achieved by driving the driving motor 5, forming a dynamic annular irradiation trajectory, which is effectively improved compared with the traditional fixed layout. The rotation mechanism makes the ultraviolet rays have an adjustable speed of 0.2-2RPM, and cooperates with the secondary reflection of the reflector to form a spatial dose superposition effect, and the sterilization intensity is improved; the rotating air outlet 303 forms a non-steady-state jet field, constructs a three-dimensional turbulent structure in the sterilization area, prolongs the air residence time, and prolongs the effective exposure time of microbial aerosols. In addition, through the rotation design of the ultraviolet irradiation component 400, the light source works at different positions, and the heat can be more evenly distributed to the entire device to avoid heat concentration. The rotation design makes the UV irradiation component 400 contact with the surrounding air more frequently, and the air flow takes away heat more efficiently, thereby reducing the temperature of the light source. The light source works in different positions, avoiding long-term operation in a high-temperature environment, thereby reducing the risk of light decay and device damage. In summary, the rotation design of the UV irradiation component 400 can effectively reduce the junction temperature of the light source, extend the service life of the light source, improve the photoelectric conversion efficiency, optimize the heat dissipation performance of the light source, and use the dynamic heat dissipation mechanism to improve the operating efficiency of the overall disinfection device, providing users with a safer, more durable and efficient air disinfection and purification solution.

[0040] The central pipeline 300 also includes: a pre-filter tube 305, the inner end of which is inserted into the annular slot at the left end of the central transverse tube 301, and the pre-filter hole 306 on the pre-filter tube 305 is located on the inner side of the multiple air guide ports 302 of the central transverse tube 301. A friction ring 307 is fixed to the outer end of the pre-filter tube 305, and the friction ring 307 is frictionally connected to the friction wheel 308. The friction wheel 308 and the driven gear 309 are both assembled and fixed on the horizontal shaft 310, and the middle part of the horizontal shaft 310 is rotated on the side panel of the casing 1, and the driving gear 311 fixed on the central transverse tube 301 meshes with the driven gear 309. The pre-filter hole 306 on the pre-filter tube 305 is located inside the multiple air guide ports 302 of the central transverse tube 301. When the air enters the central transverse tube 301 through the multiple air guide ports 302, it needs to be filtered through the pre-filter hole 306 on the pre-filter tube 305. The pre-filter tube 305 is set to filter the air entering the irradiation and sterilization area from the air intake area, reduce the contamination of impurities in the air to the ultraviolet irradiation component 400, ensure the irradiation effect of the ultraviolet irradiation component 400, and reduce the ultraviolet irradiation component 400. The cleaning frequency of the component 400 is increased. When the central transverse tube 301 rotates, the driving gear 311 can be driven to rotate. The driving gear 311 meshes with the driven gear 309 to rotate. The driven gear 309 drives the horizontal shaft 310 and the friction wheel 308 to rotate. When the friction wheel 308 rotates, the friction transmission friction ring 307 rotates, thereby driving the pre-filter tube 305 to rotate. The pre-filter tube 305 rotates in the central transverse tube 301. The pre-filter holes 306 at different positions of the pre-filter tube 305 cooperate with the multiple air guide ports 302 to filter the air.

[0041] The advantages of the above technical solution include:

[0042] 1. Efficient filtration to reduce impurity pollution

[0043] The pre-filter hole 306 on the pre-filter tube 305 is located on the inner side of the multiple air guide ports 302 of the central transverse tube 301. The air needs to be filtered through the pre-filter hole 306 before entering the central transverse tube 301, which can effectively filter impurities such as dust and particulate matter in the air, reduce the contamination of these impurities to the ultraviolet irradiation component 400, and ensure the effect of ultraviolet irradiation; through the efficient filtration of the pre-filter tube 305, the contamination of the ultraviolet irradiation component 400 is reduced, thereby reducing the cleaning frequency, reducing maintenance costs and workload.

[0044] 2. Dynamic filtration to improve filtration efficiency

[0045] When the central transverse tube 301 rotates, the pre-filter tube 305 also rotates through the linkage of the driving gear 311, the driven gear 309, the transverse shaft 310 and the friction wheel 308. This rotation design enables the pre-filter holes 306 at different positions on the pre-filter tube 305 to cooperate with multiple air guide ports 302, thereby realizing dynamic filtration, avoiding blockage of the filter holes at a single position and improving the filtration efficiency. The rotational motion also allows the air to be evenly filtered at the pre-filter holes 306 at different positions, thereby avoiding excessive local filtration burden and extending the service life of the filter tube.

[0046] 3. Extend the service life of the filter tube

[0047] The rotating design of the pre-filter tube 305 enables the filter holes 306 to be used evenly at different positions, thereby avoiding local wear and tear and extending the service life of the filter tube.

[0048] The rotational motion helps to reduce the blockage of the filter holes 306. The airflow generated by the rotation can take away some of the impurities attached to the filter holes. The pre-filter tube 305 and the central transverse tube 301 rotate in the opposite direction, so that the filter holes 306 and the air guide port 302 are periodically misaligned, forming a shear airflow, which is conducive to automatically peeling off the attached particles, reducing the blockage rate by 80%, and further extending the service life of the filter tube; and when the pre-filter tube 305 rotates, the impurities filtered on the pre-filter tube 305 contact the side wall of the air guide port 302 of the central transverse tube 301, which can scrape off some of the impurities, play a role in automatic impurity removal, reduce the cleaning frequency, and reduce maintenance costs.

[0049] In the present invention, the pre-filter hole 306 can adopt a gradient aperture design (800 μm in the outer layer → 200 μm in the inner layer), combined with rotary dynamic filtration, to achieve a higher PM10-PM2.5 particle interception efficiency.

[0050] The central pipeline 300 also includes: a limiting ring groove is provided at the outer end of the pre-filter tube 305, the friction ring 307 is slidably fitted on the arc-shaped side plate 6 of the outer wall of the housing 1, and the limiting column threadedly connected on the arc-shaped side plate 6 is inserted in the limiting ring groove. The setting of the arc-shaped side plate 6 improves the stability of the friction ring 307 during movement, and can scrape off the impurities adhering to the friction ring 307. The limiting column threadedly connected on the arc-shaped side plate 6 is inserted in the limiting ring groove, which plays a role in limiting the pre-filter tube 305, preventing the pre-filter tube 305 from being separated from the central pipeline 300 when rotating or vibrating at high speed, and ensuring the safety and stability of the device. The limiting column threadedly connected on the arc-shaped side plate 6 is inserted in the limiting ring groove, making the installation and removal process of the pre-filter tube 305 more convenient. The user only needs to rotate the limiting column to complete the installation or removal of the pre-filter tube 305, which is simple to operate and saves time.

[0051] The central pipeline 300 also includes: a rear filter tube 312, the inner end of the rear filter tube 312 is inserted into the central transverse tube 301 through the right end of the central transverse tube 301, the rear filter hole 313 on the rear filter tube 312 is located on the inner side of the multiple air diffusion ports 303 of the central transverse tube 301, and a locking frame 314 is fixed to the outer end of the rear filter tube 312. A locking bolt 315 rotatably connected to the locking frame 314 is screwed on the outer wall of the casing 1, and the aperture of the rear filter hole 313 is smaller than the aperture of the front filter hole 306. The rear filter tube 312 is used to filter the air that enters the irradiation sterilization area through the multiple air diffusion ports 303. After the air is filtered through the front filter tube 305 and enters the central transverse tube 301, it can be filtered for the second time through the rear filter holes 313 of the rear filter tube 312. The aperture of the rear filter holes 313 is smaller than the aperture of the front filter holes 306, so as to achieve a double filtering effect. A locking frame 314 is fixed to the outer end of the rear filter tube 312. A locking bolt 315 rotatably connected to the locking frame 314 is screwed on the outer wall of the casing 1, so that the rear filter tube 312 is in a relatively fixed state. When the central transverse tube 301 rotates, the matching positions of the multiple air diffusion ports 303 thereon and the rear filter holes 313 on the rear filter tube 312 are changed, so that the rear filter holes 313 at different positions can all be filtered. In addition, the structural setting of the rear filter tube 312 makes it easy to disassemble and install the rear filter tube 312.

[0052] The front filter tube 305 and the rear filter tube 312 are used together. Before the air enters the irradiation and sterilization area, it needs to be initially filtered through the front filter hole 306 of the front filter tube 305, and then filtered twice through the rear filter hole 313 of the rear filter tube 312. Since the aperture of the rear filter hole 313 is smaller than that of the front filter hole 306, it can filter out finer particles and impurities, achieving a double filtering effect; the aperture design of the rear filter hole 313 enables the device to capture finer particles, further improving the filtering accuracy and ensuring that the air entering the irradiation and sterilization area is cleaner; when the central cross tube 301 rotates, the multiple air diffusion ports 303 on it will align with the rear filter holes on the rear filter tube 312. The filter holes 313 are matched at different positions, so that the rear filter holes 313 at different positions can all be filtered, avoiding excessive use and clogging of a single filter hole; the rotation design allows the rear filter holes 313 to filter evenly at different positions, avoiding excessive local filtering burden and extending the service life of the filter tube; the outer end of the rear filter tube 312 is fixed with a locking frame 314, and is screwed to the outer wall of the housing 1 through a locking bolt 315, so that the rear filter tube 312 remains relatively fixed when the central transverse tube 301 rotates, ensuring the stability of the filtering process; the fixed design of the rear filter tube 312 cooperates with the rotation mechanism of the central transverse tube 301, so that the air is more evenly distributed when entering the irradiation and sterilization area. Uniform air distribution helps to increase the coverage of ultraviolet irradiation and enhance the disinfection effect.

[0053] The ultraviolet irradiation assembly 400 includes: an ultraviolet lamp tube 401, a short shaft 402, a lamp holder 403, a left lamp holder 404, a right lamp holder 405, a small gear 406 and an inner gear ring 407; the left lamp holder 404 and the right lamp holder 405 are relatively assembled and fixed on the central cross tube 301, and are located on the inner side of the U-shaped reflector plate 100; a plurality of short shafts 402 with lamp holders 403 at the inner ends are rotated on the left lamp holder 404 and the right lamp holder 405, and the ultraviolet lamp tube 401 is fixedly assembled between the two relatively arranged lamp holders 403, and the small gear 406 fixed on the short shaft 402 is meshed with the inner gear ring 407 fixed on the inner wall of the baffle 200. When the central transverse tube 301 rotates, it can drive the left lamp holder 404 and the right lamp holder 405 to perform a rotational and circling motion, thereby driving the multiple ultraviolet lamp tubes 401 to perform a rotational and circling motion. When the ultraviolet lamp tubes 401 circling motion, it can drive the pinion 406 on the short shaft 402 to roll in the inner gear ring 407, thereby driving the pinion 406 to rotate around its own axis through the engagement with the inner gear ring 407. When the pinion 406 rotates, it drives the ultraviolet lamp tube 401 to rotate through the short shaft 402 and the lamp holder 403, thereby improving the uniformity of the ultraviolet lamp tube 401 in contact with the air at different positions, and making the ultraviolet lamp tube 401 emit light through the air outlet 4 at different positions, which has the following advantages:

[0054] 1. All-round and uniform sterilization, the ultraviolet lamp 401 simultaneously performs circling and self-rotation movements, so that the ultraviolet rays can cover a larger space and reduce sterilization blind spots. Different positions of the lamp tube alternately emit light through the air outlet 4 to ensure uniform air contact and improve the overall sterilization efficiency.

[0055] 2. Dynamic contact enhances purification effect. The rotation and circling motion of the ultraviolet lamp tube 401 stir the surrounding air, promote air circulation, increase the frequency and time of contact between air and ultraviolet rays, and thus kill microorganisms more efficiently.

[0056] 3. Extend the service life of the lamp. The self-rotation design of the UV lamp 401 avoids long-term local exposure or overheating of the UV lamp, evenly disperses the loss, reduces the light decay rate, and extends the service life.

[0057] 4. High-efficiency mechanical linkage design, through the meshing of the pinion 406 and the inner gear ring 407, only the central cross tube 301 needs to be driven to realize the double movement of the lamp tube, without the need for an additional power source, with a simple structure and low energy consumption.

[0058] 5. Optimization of light utilization: The U-shaped reflector 100 cooperates with the rotation of the ultraviolet lamp 401 to concentrate and reflect scattered ultraviolet rays and enhance the effective light intensity; the directional design of the air outlet 4 further focuses the light and improves the energy utilization efficiency.

[0059] 6. Potential anti-fouling ability: the continuous movement of the UV lamp 401 may reduce the deposition of dust on the surface, reduce the cleaning frequency, and maintain long-term stable sterilization performance.

[0060] The ultraviolet irradiation assembly 400 further includes: a plurality of arc-shaped heat exchange plates 408 fixed between the left lamp holder 404 and the right lamp holder 405, the inner arc surface of the arc-shaped heat exchange plate 408 is provided with a cleaning brush that slides with the ultraviolet lamp tube 401, and the outer arc surface of the arc-shaped heat exchange plate 408 is arranged toward the air diffusion port 303 of the central transverse tube 301. A plurality of strip-shaped corrugated grooves are evenly arranged on the outer arc surface of the arc-shaped heat exchange plate 408. A cleaning brush is provided on the inner curved surface of the arc-shaped heat exchange plate 408. When the ultraviolet lamp 401 rotates, different positions of the ultraviolet lamp 401 will contact the cleaning brush, which can effectively remove dust and dirt on the surface of the ultraviolet lamp 401, avoid the attenuation of light intensity caused by dust and dirt, and ensure that the light output of the ultraviolet lamp 401 is always in the best state. The outer curved surface of the arc-shaped heat exchange plate 408 is arranged toward the air diffusion port 303 of the central transverse tube 301, and the air is diverted through the outer curved surface of the arc-shaped heat exchange plate 408 to prevent air from directly blowing the ultraviolet lamp 401, reduce wind speed impact, and prevent the direct airflow from causing wind speed impact on the ultraviolet lamp 401, causing the lamp to vibrate or be damaged. The arc-shaped heat exchange plate 408 blocks the airflow and disperses it, thereby protecting the stability of the ultraviolet lamp 401; the outer curved surface of the arc-shaped heat exchange plate 408 can evenly disperse the airflow in multiple directions, avoid the airflow from being concentrated in a certain area, and achieve uniform distribution of air flow. Through the diversion design, the air can flow more smoothly, reducing the possible airflow dead corners, ensuring that air flows evenly in the sterilization area and avoiding blind spots in disinfection; in addition, the arc heat exchange plate 408 contacts the ultraviolet lamp tube 401 and absorbs the heat of the ultraviolet lamp tube 401 when it is working. The design of the strip corrugated grooves significantly increases the surface area of ​​the arc heat exchange plate 408, making the contact area between the air and the heat exchange plate larger, thereby improving the heat exchange efficiency. The strip corrugated grooves can cause turbulence in the air when flowing through the heat exchange plate, thereby enhancing the heat exchange effect between the air and the heat exchange plate. The heat generated by the ultraviolet lamp tube 401 can be taken away by the air more quickly, thereby reducing the temperature of the ultraviolet lamp tube 401, avoiding the problem of local overheating of the ultraviolet lamp tube 401, and extending the service life of the lamp tube. Through the diversion and turbulence effects, the air can flow more efficiently, take away more heat, and improve the heat dissipation effect of the arc heat exchange plate 408; by optimizing air flow and thermal management, the working environment of the ultraviolet lamp tube 401 is more stable, ensuring the uniform output of ultraviolet light, and improving the uniformity and thoroughness of disinfection.

[0061] The air disinfection and purification device based on ultraviolet irradiation further includes: a light guide plate assembly, which includes: multiple rotating shafts 7 rotated at the lower end of the inner side of multiple air outlet light emitting ports 4, multiple rotating shafts 7 are located in the multiple air outlet light emitting ports 4 and are fixed with light guide plate bodies 8, and the upper surface of the light guide plate body 8 is provided with a reflective coating, and the worm gears 9 fixed on the multiple rotating shafts 7 are meshed with the worm 10 rotated in the housing 1, and the worm 10 is connected to the light guide motor assembled and connected in the housing 1. After the light guide motor is started, it can drive the worm 10 to rotate, and the worm 10 rotates and meshes with multiple worm gears 9 to rotate, thereby driving the multiple rotating shafts 7 to rotate forward or reverse, and finally realize the control of the opening amplitude and irradiation angle of the light guide plate body 8 to the air outlet light emitting ports 4, and the upper surface of the light guide plate body 8 is provided with a reflective coating to facilitate the upward reflection of ultraviolet light, improve the safety of use, and can adjust the irradiation angle according to actual needs to ensure that the ultraviolet light can cover the target area, and improve the accuracy and effect of disinfection. The upper surface of the light guide plate body 8 is provided with a reflective coating, which can reflect the ultraviolet light upward and reduce the scattering and loss of light; the reflective coating design of the light guide plate body 8 ensures that the ultraviolet light is reflected upward, reducing the direct exposure of the ultraviolet light to the operator and surrounding personnel, and improving the safety of use. By precisely controlling the irradiation angle, the ultraviolet light can be prevented from leaking to non-target areas, further improving safety. By adjusting the angle of the light guide plate body 8, the airflow distribution of the air outlet 4 can be optimized, so that the air flows more evenly.

[0062] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0063] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. An air disinfection and purification device based on ultraviolet irradiation, characterized in that: include: A casing, the bottom of which is connected to a cover with an air inlet; An ultraviolet disinfection structure is installed in the air intake area formed between the casing and the cover; The ultraviolet disinfection structure comprises: a U-shaped reflector plate, a baffle, a central pipeline and an ultraviolet irradiation component; baffles are fixed at both ends of the U-shaped reflector plate, the U-shaped reflector plate and the baffle are fixedly assembled on the inner wall of the front panel of the casing, and the U-shaped end of the U-shaped reflector plate is arranged away from multiple air outlets and light emission ports on the front panel of the casing; the central pipeline is rotatably connected to the baffle, an air guide port is provided on the pipe body where the central pipeline passes through the outside of the U-shaped reflector plate, and an air dispersion port and an ultraviolet irradiation component are provided on the pipe body where the central pipeline is inserted into the U-shaped reflector plate.

2. The air disinfection and purification device based on ultraviolet irradiation according to claim 1 is characterized in that: There are multiple air inlets, each of which is equipped with an air inlet fan and an air inlet filter, and the air inlet filter is located below the air inlet fan.

3. The air disinfection and purification device based on ultraviolet irradiation according to claim 1 is characterized in that: The central pipeline includes: a central transverse pipe, which is sealed and arranged on two baffles and the side panels on the left and right sides of the casing; multiple air guide ports on the central transverse pipe are located between a baffle and a side panel of the casing, and multiple air dispersion ports on the central transverse pipe are located in an irradiation and sterilization area formed between a U-shaped reflector plate, two baffles and a front panel of the casing; a driven wheel on the central transverse pipe is synchronously connected with a driving wheel on a driving motor through a driving belt, and the driving motor is assembled and connected in the air intake area.

4. The air disinfection and purification device based on ultraviolet irradiation according to claim 3 is characterized in that: The central pipeline also includes: a pre-filter tube, the inner end of the pre-filter tube is inserted into the annular slot at the left end of the central transverse tube, the pre-filter hole on the pre-filter tube is located on the inner side of multiple air guide ports of the central transverse tube, a friction ring is fixed to the outer end of the pre-filter tube, the friction ring is frictionally connected to the friction wheel, the friction wheel and the driven gear are both assembled and fixed on the transverse axis, the middle part of the transverse axis is rotated on the side panel of the casing, and the driving gear fixed on the central transverse tube meshes with the driven gear.

5. The air disinfection and purification device based on ultraviolet irradiation according to claim 4 is characterized in that: The central pipeline also includes: a limiting ring groove is arranged at the outer end of the pre-filter tube, a friction ring is slidably fitted on the arc-shaped side plate of the outer wall of the casing, and a limiting column threadedly connected on the arc-shaped side plate is inserted in the limiting ring groove.

6. The air disinfection and purification device based on ultraviolet irradiation according to claim 4 is characterized in that: The central pipeline also includes: a rear filter tube, the inner end of the rear filter tube is inserted into the central transverse tube through the right end of the central transverse tube, the rear filter holes on the rear filter tube are located on the inner side of multiple air diffusion ports of the central transverse tube, a locking frame is fixed to the outer end of the rear filter tube, and a locking bolt rotatably connected to the locking frame is screwed on the outer wall of the casing, and the aperture of the rear filter hole is smaller than the aperture of the front filter hole.

7. The air disinfection and purification device based on ultraviolet irradiation according to claim 6 is characterized in that: The inner sides of the U-shaped reflector plate and the baffle are both provided with reflective layers.

8. The air disinfection and purification device based on ultraviolet irradiation according to claim 7 is characterized in that: The ultraviolet irradiation assembly includes: an ultraviolet lamp tube, a short shaft, a lamp holder, a left lamp holder, a right lamp holder, a small gear and an inner gear ring; the left lamp holder and the right lamp holder are relatively assembled and fixed on the central cross tube, and are located on the inner side of the U-shaped reflector plate; a plurality of short shafts with lamp holders at the inner ends are rotated on the left lamp holder and the right lamp holder, and the ultraviolet lamp tube is fixedly assembled between the two relatively arranged lamp holders, and the small gear fixed on the short shaft is meshed with the inner gear ring fixed on the inner wall of the baffle.

9. The air disinfection and purification device based on ultraviolet irradiation according to claim 8, characterized in that: The ultraviolet irradiation assembly also includes: a plurality of arc-shaped heat exchange plates fixed between the left lamp holder and the right lamp holder, the inner arc surface of the arc-shaped heat exchange plate is provided with a cleaning brush that slides with the ultraviolet lamp tube, and the outer arc surface of the arc-shaped heat exchange plate is arranged toward the air diffusion port of the central horizontal tube.

10. The air disinfection and purification device based on ultraviolet irradiation according to claim 1, characterized in that: Also includes: A light guide plate assembly, the light guide plate assembly includes: multiple rotating shafts rotatably arranged at the lower end of the inner side of multiple air outlets and light emitting ports, the multiple rotating shafts are located in the multiple air outlets and light guide plate bodies are fixed on the shaft bodies, the upper surface of the light guide plate body is provided with a reflective coating, the worm gears fixed on the multiple rotating shafts are meshed with the worm rotatably arranged in the casing, and the worm is connected to the light guide motor assembled and connected in the casing.

Images