Medical infection prevention and control ultraviolet disinfection equipment

Abstract

The present application belongs to the technical field of ultraviolet disinfection, and particularly relates to a medical infection prevention and control ultraviolet disinfection device, which comprises a casing, an air inlet pipe and an air outlet pipe are arranged on the casing, an air flow channel is formed in the casing, an ultraviolet lamp is fixedly arranged in the air flow channel, a reflection assembly comprises at least one reflection blade, the reflection blade has a reflection surface, and the reflection blade is rotatably arranged on the periphery of the ultraviolet lamp. The present application is characterized in that the rotatable reflection blade is arranged around the lamp tube, the high-reflection coating reflection surface realizes directional strengthening projection of ultraviolet light, the microstructure scattering surface realizes multi-angle uniform diffusion, the rotation movement makes the light path dynamically cover the whole space of the air flow channel, the direct blind area and the disinfection dead angle are completely eliminated, the uniformity of the ultraviolet light intensity and the energy density in the flow channel are significantly improved, it is ensured that the air flowing through the air flow channel can receive sufficient irradiation, the efficient inactivation of pathogenic microorganisms is realized, and the probability of cross infection in the hospital is greatly reduced.

Description

Technical Field

[0001] This invention belongs to the field of ultraviolet disinfection technology, and in particular relates to an ultraviolet disinfection device for medical infection control. Background Technology

[0002] In medical settings such as hospital wards, operating rooms, and treatment rooms, pathogenic microorganisms in the air and on object surfaces can easily cause cross-infection. Ultraviolet disinfection, due to its lack of chemical residues and high disinfection efficiency, has become a core means of medical infection control. Medical infection control ultraviolet disinfection equipment refers to specialized equipment that uses ultraviolet radiation to destroy the structure of pathogenic microorganisms such as bacteria, viruses, and fungi, thereby causing them to lose their ability to replicate and infect, thus achieving physical disinfection of air, object surfaces, water, etc. in medical institutions and preventing hospital infections.

[0003] Existing equipment mostly uses fixed reflectors or non-reflective structures. Ultraviolet rays travel in a straight line, and there are a large number of direct radiation blind spots in the airflow channel. When the airflow passes through at high speed, it cannot be fully irradiated. Moreover, the reflective surface has no partition design and can only reflect simply. It cannot take into account both directional enhancement and global scattering, resulting in uneven distribution of ultraviolet intensity in the flow channel, insufficient local dose, inability to stably achieve efficient inactivation of pathogenic microorganisms, and difficulty in controlling the risk of cross-infection. Summary of the Invention

[0004] The purpose of this invention is to address the problems mentioned in the background section by providing a medical infection control ultraviolet disinfection device.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions:

[0006] A medical infection control ultraviolet disinfection device includes a housing, on which an air inlet pipe and an air outlet pipe are provided, and an air flow channel is formed inside;

[0007] The ultraviolet lamp tube is fixedly installed inside the airflow channel;

[0008] A reflective assembly includes at least one reflective blade having a reflective surface, the reflective blade being rotatably mounted on the periphery of the ultraviolet lamp tube with the reflective surface facing the ultraviolet lamp tube, for reflecting ultraviolet light emitted by the ultraviolet lamp tube into the airflow channel.

[0009] Preferably, the reflective blades comprise a plurality of blades, which are arranged circumferentially at intervals around the periphery of the ultraviolet lamp tube.

[0010] The reflective blade has a scattering surface arranged opposite to its reflective surface. The scattering surface is provided with light scattering microstructures, which are used to scatter part of the ultraviolet rays into the airflow channel when the reflective blade rotates.

[0011] Preferably, the system further includes a cleaning component, which includes a base on which a cleaning member is rotatably connected. An elastic element is fixedly connected inside the cleaning member. A limiting strip is fixed to the end of the elastic element away from the cleaning member, and a support strip is fixed to the end of the limiting strip away from the cleaning member.

[0012] Preferably, a movable rod is rotatably connected to the support bar, and a cleaning strip that is rotatably connected to the movable rod is provided on the side of the second cleaning part away from the cleaning component.

[0013] Preferably, the reflective surface is a hard metal-based high-reflectivity coating surface, and the scattering surface is a dust-repellent polymer microstructure surface;

[0014] The cleaning strip includes a first cleaning part and a second cleaning part arranged sequentially along the radial direction of the reflective blade. The first cleaning part is a hard scraper that contacts the rotation trajectory of the reflective surface, and the second cleaning part is a soft brush that contacts the rotation trajectory of the scattering surface.

[0015] Preferably, the movable rod that is not in contact with the reflective blade rotates downward, and the cleaning strip is in a retracted state.

[0016] Preferably, it also includes a photosensitive sensor fixedly disposed inside the housing, with its photosensitive surface facing the rotation path of the reflective blade, for receiving ultraviolet light reflected by the reflective and scattering surfaces, so as to determine the cleanliness of the reflective blade based on the received light intensity fluctuation signal.

[0017] Preferably, it further includes an adjustment component disposed within the airflow channel for driving and controlling the air pressure of air flowing from the air inlet pipe into the housing. The adjustment component includes a sealed housing connected to the air inlet pipe, an air outlet is provided on the outer surface of the sealed housing, and a rotating blade is provided inside the sealed housing.

[0018] Preferably, a connecting shaft is provided at the connection between the rotating blade and the sealing housing, and an electromagnetic damping bearing is provided between the connecting shaft and the inner wall of the rotating blade. The connecting shaft and the electromagnetic damping bearing are coaxially arranged, and electricity is supplied to the electromagnetic damping bearing to adjust the damping value when the connecting shaft rotates.

[0019] Preferably, the inner wall of the housing is provided with an arc-shaped groove, a cover is provided in the arc-shaped groove, a reflective hole is provided on the inner wall of the cover, and an irradiation tube is provided on the bottom wall of the housing.

[0020] Compared with existing technologies, the advantages of this medical infection control ultraviolet disinfection device are:

[0021] 1. This invention features rotatable reflective blades distributed around the lamp tube. The high-reflectivity coating on the reflective surface enables directional and enhanced ultraviolet radiation projection, while the microstructured scattering surface achieves uniform diffusion at multiple angles. The rotational motion dynamically covers the entire airflow channel with light, completely eliminating direct blind spots and disinfecting angles. This significantly improves the uniformity of ultraviolet intensity and energy density within the airflow channel, ensuring that all airflow receives sufficient irradiation, achieving efficient inactivation of pathogenic microorganisms, and greatly reducing the probability of nosocomial cross-infection.

[0022] 2. This invention, by setting up a cleaning component with an elastic adaptive structure, allows the hard scraper and soft brush to closely adhere to the reflective and scattering surfaces respectively. It utilizes the rotational power of the blades to achieve automatic cleaning without external drive, continuously removing dust and oil stains, maintaining the reflection and scattering efficiency without attenuation. With the help of a photosensitive sensor to monitor light intensity fluctuations in real time, it can automatically determine the cleanliness status and switch to a backup cleaning component, transforming passive maintenance into active self-cleaning, significantly extending the continuous working cycle and reducing downtime and manual operation.

[0023] 3. This invention, by setting up an adjustment component, uses electromagnetic damping bearings to dynamically adjust the damping of the rotating blades, and combines this with air outlet wind speed detection to form a closed-loop control. Based on real-time exhaust data, it automatically adjusts the air inlet resistance and precisely controls the residence time of air in the disinfection chamber, achieving adaptive matching between flow rate and disinfection intensity. This avoids both incomplete disinfection due to excessive flow rate and reduced treatment efficiency due to excessively low flow rate. It enables long-term stable output of compliant disinfected air without human intervention, improving the reliability and safety of the equipment.

[0024] 4. This invention achieves rapid switching between air disinfection and surface disinfection by setting up an arc-shaped groove, a cover, a reflective hole, and an irradiation tube. In air mode, the cover seals the lower light path, and the reflective component completes the circulating air disinfection. In surface mode, the electromagnetic drive moves the cover, the light path converges downward and is output directionally through the irradiation tube, which can perform targeted high-intensity disinfection on medical devices, work surfaces, etc., meet the diversified disinfection needs of the medical environment, and reduce equipment investment and space occupation. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a medical infection control ultraviolet disinfection device provided by the present invention;

[0026] Figure 2 This is a schematic diagram of the internal structure of a medical infection control ultraviolet disinfection device provided by the present invention;

[0027] Figure 3 This is a partial internal structure diagram of a medical infection control ultraviolet disinfection device provided by the present invention;

[0028] Figure 4 This is a schematic diagram of the irradiation tube position structure of a medical infection control ultraviolet disinfection device provided by the present invention;

[0029] Figure 5 This is a schematic diagram of the reflector component structure of a medical infection control ultraviolet disinfection device provided by the present invention.

[0030] Figure 6 This is a schematic diagram of the cleaning component structure of a medical infection control ultraviolet disinfection device provided by the present invention;

[0031] Figure 7 This invention provides Figure 6 Enlarged schematic diagram of the structure at point A in the diagram;

[0032] Figure 8 This is a schematic diagram of the cleaning strip structure of a medical infection control ultraviolet disinfection device provided by the present invention;

[0033] Figure 9 This is a schematic diagram of the internal structure of the adjustment component of a medical infection control ultraviolet disinfection device provided by the present invention;

[0034] Figure 10 This is a schematic diagram of the rotating blade structure of a medical infection control ultraviolet disinfection device provided by the present invention.

[0035] In the diagram: 1. Housing; 2. Adjustment assembly; 3. Ultraviolet lamp; 4. Reflector assembly; 5. Cleaning assembly; 11. Air inlet duct; 12. Air outlet duct; 21. Sealed housing; 22. Air outlet; 23. Rotating blade; 231. Connecting shaft; 232. Electromagnetic damping bearing; 31. Arc groove; 32. Cover; 33. Reflector hole; 34. Irradiation tube; 41. Reflector blade; 42. Reflector surface; 43. Scattering surface; 51. Cleaning component; 52. Elastic component; 53. Restriction strip; 54. Support strip; 541. Movable rod; 542. Cleaning strip; 543. First cleaning section; 544. Second cleaning section. Detailed Implementation

[0036] The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0037] Example: Refer to Figures 1 to 10 A medical infection control ultraviolet disinfection device includes a housing 1, an air inlet pipe 11 and an air outlet pipe 12 on the housing 1, forming an air flow channel inside, an ultraviolet lamp 3 fixedly installed in the air flow channel, and a reflective component 4 including at least one reflective blade 41, the reflective blade 41 having a reflective surface 42, the reflective blade 41 being rotatably mounted on the periphery of the ultraviolet lamp 3, with the reflective surface 42 facing the ultraviolet lamp 3, for reflecting the ultraviolet rays emitted by the ultraviolet lamp 3 into the air flow channel.

[0038] To further explain, such as Figure 2 , Figure 3 and Figure 5 As shown, the reflective blades 41 include multiple reflective blades 41, which are arranged circumferentially around the ultraviolet lamp tube 3. Each reflective blade 41 has a scattering surface 43 opposite to its reflective surface 42. The scattering surface 43 is provided with light scattering microstructures, which are used to scatter part of the ultraviolet light into the airflow channel when the reflective blades 41 rotate.

[0039] It should be noted that when the airflow passes through the disinfection area where the ultraviolet lamp tube 3 is located, the reflective blades 41 of the reflective component 4 rotate around the ultraviolet lamp tube 3. The reflective surface 42 of the reflective blade 41 uses a hard metal-based high reflective coating to directionally project ultraviolet light onto the entire airflow channel. The scattering surface 43 of the reflective blade 41 uses a dust-repellent polymer microstructure to evenly diffuse ultraviolet light, thereby improving the uniformity and coverage of ultraviolet irradiation, killing pathogenic microorganisms in the airflow channel, and reducing the risk of cross-infection in the medical environment.

[0040] To elaborate further, such as Figure 2 , Figure 6 and Figure 7 As shown, it also includes a cleaning component 5, which includes a base, on which a cleaning member 51 is rotatably connected. An elastic member 52 is fixedly connected inside the cleaning member 51. A limiting strip 53 is fixed to one end of the elastic member 52 away from the cleaning member 51, and a support strip 54 is fixed to one end of the limiting strip 53 away from the cleaning member 51.

[0041] To further explain, such as Figure 8 As shown, a movable rod 541 is rotatably connected to the support bar 54. A cleaning strip 542, rotatably connected to the movable rod 541, is provided on the side of the second cleaning part 544 away from the cleaning component 51. The reflective surface 42 is a hard metal-based high-reflective coating surface, and the scattering surface 43 is a dust-repellent polymer microstructure surface. The cleaning strip 542 includes a first cleaning part 543 and a second cleaning part 544 arranged sequentially along the radial direction of the reflective blade 41. The first cleaning part 543 is a hard scraper that contacts the rotation trajectory of the reflective surface 42, and the second cleaning part 544 is a soft brush that contacts the rotation trajectory of the scattering surface 43. The movable rod 541, which is not in contact with the reflective blade 41, rotates downward, and the cleaning strip 542 is in a retracted state.

[0042] To elaborate further, such as Figure 2 and Figure 3 As shown, it also includes a photosensitive sensor fixedly installed inside the housing 1, with its photosensitive surface facing the rotation path of the reflective blade 41, for receiving ultraviolet rays reflected by the reflective surface 42 and the scattering surface 43, so as to determine the cleanliness of the reflective blade 41 based on the received light intensity fluctuation signal.

[0043] It should be noted that during the rotation of the reflector blade 41, the elastic element 52 pushes the cleaning strip 542. The first cleaning part 543 and the second cleaning part 544, used for cleaning, are respectively attached to the surfaces of the reflector surface 42 and the scattering surface 43. The first cleaning part 543 uses a hard scraper to clean the surface of the reflector surface 42, and the second cleaning part 544 uses a soft brush to sweep the dust on the surface of the scattering surface 43. This maintains the high reflectivity of the reflector surface 42 and the light scattering effect of the scattering surface 43, extends the stable working cycle of the reflector blade 41, reduces the frequency of manual maintenance, and the photosensitive sensor fixed in the housing 1 continuously collects the ultraviolet signals reflected from the reflector surface 42 and the scattering surface 43. When the surface of the reflector blade 41 is clean, the optical performance of the reflector surface 42 and the scattering surface 43 remains stable, and the photosensitive sensor receives... The received light intensity signal exhibits a uniform and regular state. When dust or deposits accumulate on the surface of the reflective blade 41, the reflection and scattering efficiency decreases, and the light intensity signal received by the photosensitive sensor shows obvious fluctuations. This indicates that the cleaning strip 542 is unable to effectively clean the reflective blade 41 due to wear. At this time, a new cleaning strip 542 can be switched to clean the reflective blade 41 by rotating the cleaning component 51. It should be noted that only the movable rod 541 on the cleaning strip 542 used for cleaning is in a horizontal state, allowing the first cleaning part 543 and the second cleaning part 544 to fully contact the reflective blade 41. The other movable rods 541 will rotate downwards, thereby driving the cleaning strip 542 to move towards the support strip 54, so that it is in a retracted state, without affecting the reflection and scattering effect of the reflective blade 41 on ultraviolet rays.

[0044] To further explain, such as Figure 9 As shown, it also includes an adjustment component 2, which is set in the air flow channel and is used to drive and control the air pressure of air flowing from the air inlet pipe 11 into the housing 1. The adjustment component 2 includes a sealed housing 21 connected to the air inlet pipe 11. An air outlet 22 is opened on the outer surface of the sealed housing 21, and a rotating blade 23 is provided inside the sealed housing 21.

[0045] To elaborate further, such as Figure 10 As shown, a connecting shaft 231 is provided at the connection between the rotating blade 23 and the sealing housing 21. An electromagnetic damping bearing 232 is provided between the connecting shaft 231 and the inner wall of the rotating blade 23. The connecting shaft 231 and the electromagnetic damping bearing 232 are coaxially arranged. Electricity is supplied to the electromagnetic damping bearing 232 to adjust the damping value when the connecting shaft 231 rotates.

[0046] Specifically, the air to be disinfected is introduced into the air inlet duct 11 through an external fan and ductwork. The air passes through the air inlet duct 11 and then into the sealed housing 21. The air in the sealed housing 21 drives the rotating blade 23 to rotate and finally flows from the sealed housing 21 into the housing 1, rather than directly entering the housing 1. This allows the air in the housing 1 sufficient time to come into contact with the ultraviolet light irradiated by the ultraviolet lamp tube 3, thus ensuring the disinfection intensity of the air. The wind speed detector installed in the air outlet duct 12 can detect the disinfected air discharged from the air outlet duct 12 in real time. When the wind speed in the air outlet duct 12 is high, the air will stay in the housing 1 for a shorter time and cannot be effectively disinfected. At this time, the electromagnetic damping bearing 232 can be energized to increase its damping value. The rotating blade 23 will then need a longer time to rotate. By blocking the air in the air inlet duct 11 through the rotating blade 23, the air in the housing 1 can be disinfected.

[0047] To further explain, such as Figure 4 As shown, the inner wall of the housing 1 is provided with an arc-shaped groove 31, the arc-shaped groove 31 is provided with a cover 32, the inner wall of the cover 32 is provided with a reflective hole 33, and the bottom wall of the housing 1 is provided with an irradiation tube 34.

[0048] Specifically, when disinfecting the air, the cover 32, located below the ultraviolet lamp tube 3, can block the irradiation tube 34 and also assist the reflector blades 41 in reflecting and diffusing the ultraviolet rays irradiated by the ultraviolet lamp tube 3. When it is necessary to disinfect an object, since there is an electromagnetic block in the arc groove 31, the magnetism generated by energizing the electromagnetic block will push the cover 32 to move along the arc groove 31 until the cover 32 moves directly above the ultraviolet lamp tube 3. At this time, the reflector hole 33 in the cover 32 will reflect the ultraviolet rays irradiated by the ultraviolet lamp tube 3 downwards, and then irradiate the surface of the object through multiple irradiation tubes 34, so as to treat medical items that need ultraviolet disinfection.

[0049] The functional principle of this invention can be explained through the following operation: External air to be disinfected is directed through the air inlet pipe 11 to the sealed housing 21 by an external fan and duct. The thrust generated by the airflow directly acts on the blade surface of the rotating blade 23, causing it to rotate around the connecting shaft 231. During the rotation of the rotating blade 23, the air undergoes velocity buffering and path reversal, and then flows from the sealed housing 21 into the airflow channel inside the casing 1, completing the initial airflow regulation. The anemometer at the outlet pipe 12 forms a closed-loop linkage with the electromagnetic damping bearing 232, the connecting shaft 231, and the rotating blade 23. The anemometer collects the exhaust air volume in real time. According to the control signal, after the signal is triggered, the electromagnetic damping bearing 232 is connected to the current. The electromagnetic damping bearing 232 increases the rotational resistance of the connecting shaft 231 through magnetic damping. The connecting shaft 231 and the rotating blade 23 are kept coaxially fixed. The increase in damping directly reduces the rotational angular velocity of the rotating blade 23. After the rotational speed of the rotating blade 23 decreases, it restricts the flow of air, thereby slowing down the air flow speed in the air channel and prolonging the residence time of the air in the disinfection area, so that the air can have more sufficient contact with the ultraviolet light emitted by the ultraviolet lamp tube 3. This linkage mechanism realizes the adaptive matching of airflow and disinfection intensity, and can stably maintain the disinfection effect without manual intervention.

[0050] The ultraviolet lamp tube 3 is fixed inside the airflow channel to provide a stable light source for disinfection. The reflective blades 41 are rotatably installed around the ultraviolet lamp tube 3. Multiple reflective blades 41 are evenly spaced along the circumference. The reflective blades 41 rotate continuously under the drive mechanism. The reflective surface 42 maintains a corresponding angle with the light-emitting surface of the ultraviolet lamp tube 3. The reflective surface 42 is made of a hard metal-based high-reflection coating, which can directionally reflect the ultraviolet rays emitted by the ultraviolet lamp tube 3 to various areas of the airflow channel, fill the dead corners that cannot be covered by direct ultraviolet rays, and increase the distribution density of ultraviolet rays in the airflow channel. The scattering surface 43 is set back to the reflective surface 42. The dust-repellent polymer microstructure on the surface of the scattering surface 43 can diffuse the ultraviolet rays that are not completely oriented by the reflective surface 42 at multiple angles, so that the ultraviolet rays are more evenly distributed in the airflow channel. The rotation of the reflective blades 41 is synchronized with the reflection and scattering of ultraviolet rays. The reflective surface 42 and the scattering surface 43 in the rotating state can dynamically cover the entire airflow channel, allowing the air flowing through to continuously receive high-intensity and uniform ultraviolet irradiation, thereby achieving efficient inactivation of pathogenic microorganisms.

[0051] Furthermore, when the electromagnetic block is energized, it generates an axial magnetic field. The magnetic field force directly pushes the cover 32 to slide along the inner wall of the arc groove 31. The sliding path of the cover 32 is limited by the arc groove 31, and it eventually stops precisely above the ultraviolet lamp tube 3. At this time, the cover 32 blocks the upward light path of the ultraviolet lamp tube 3, and the reflection hole 33 guides the ultraviolet light downward. The ultraviolet light is gathered through the reflection hole 33 and then enters the irradiation tube 34. The irradiation tube 34 extends vertically and projects the ultraviolet light onto the surface of the medical item below, completing the surface disinfection. In this linkage process, the arc groove 31 provides sliding support and positioning constraint for the cover 32, the electromagnetic block provides power, the cover 32 completes the light path switching, and the reflection hole 33 and the irradiation tube 34 achieve directional light path output, meeting the multi-purpose disinfection needs of medical scenarios. Moreover, since the irradiation tube 34 and the housing 1 are sealed, it will not affect the normal air disinfection function.

[0052] The cleaning component 51 is rotatably connected to the base. One end of the elastic element 52 is fixed inside the cleaning component 51, and the other end is connected to the limiting strip 53. The end of the limiting strip 53 away from the elastic element 52 is fixed to the support strip 54. The elastic element 52 continuously generates elastic thrust, pushing the support strip 54 towards the reflector blade 41. The support strip 54 drives the movable rod 541 and the cleaning strip 542 to approach the reflector blade 41 synchronously, so that the cleaning strip 542 and the surface of the reflector blade 41 remain stably attached. The first cleaning part 543 of the cleaning strip 542 contacts the rotation trajectory of the reflector surface 42, and the second cleaning part 544 contacts the scattering surface. When the reflective blade 41 rotates, the first cleaning part 543 slides relative to the reflective surface 42 with a hard scraper structure, scraping off dust, oil and other impurities attached to the surface of the reflective surface 42. The second cleaning part 544 rubs relative to the scattering surface 43 with a soft brush structure, cleaning the fine dust accumulated on the surface of the scattering surface 43. The rotational motion of the reflective blade 41 provides power for the cleaning action, without the need for an additional drive device. The elastic force of the elastic element 52 adaptively compensates for the wear of the cleaning element, maintaining the adhesion between the cleaning strip 542 and the surface of the reflective blade 41, thus achieving continuous automatic cleaning.

[0053] The photosensitive sensor, along with the reflective blade 41 and the cleaning assembly 5, forms a monitoring linkage. The photosensitive sensor is fixed inside the housing 1, with its photosensitive surface facing the rotation path of the reflective blade 41. It continuously receives ultraviolet light reflected by the reflective surface 42 and scattered by the scattering surface 43. When the surface of the reflective blade 41 is clean, the optical performance of the reflective surface 42 and the scattering surface 43 is stable, and the light intensity signal received by the photosensitive sensor remains uniform and regular. When impurities accumulate on the surface of the reflective blade 41, the reflection and scattering efficiency decreases, and the light intensity signal fluctuates significantly. This fluctuation signal can directly reflect the cleanliness status of the reflective blade 41, providing a clear indication for the cleaning assembly. The system provides a basis for maintenance and replacement. When the cleaning strip 542 wears down and the cleaning effect decreases, the cleaning component 51 is automatically driven to rotate around the base. The cleaning component 51 drives multiple sets of support strips 54, movable rods 541 and cleaning strips 542 to rotate synchronously, switching the new cleaning strip 542 to the working position and completing the quick replacement of the cleaning components. The movable rod 541 corresponding to the non-working cleaning strip 542 rotates downward, driving the cleaning strip 542 to retract towards the support strip 54, so that the cleaning strip 542 is separated from the surface of the reflective blade 41 and is in a retracted state, avoiding interference with the reflective blade 41.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A medical infection control ultraviolet disinfection device, comprising a housing (1), characterized in that: The housing (1) is provided with an air inlet pipe (11) and an air outlet pipe (12), forming an air flow channel inside; The ultraviolet lamp tube (3) is fixedly installed in the air flow channel; The reflective assembly (4) includes at least one reflective blade (41) having a reflective surface (42). The reflective blade (41) is rotatably mounted on the periphery of the ultraviolet lamp tube (3), and the reflective surface (42) faces the ultraviolet lamp tube (3) to reflect the ultraviolet rays emitted by the ultraviolet lamp tube (3) into the airflow channel.

2. The medical infection control ultraviolet disinfection device according to claim 1, characterized in that, The reflective blades (41) include a plurality of them, and the plurality of reflective blades (41) are arranged circumferentially at intervals around the periphery of the ultraviolet lamp tube (3); The reflective blade (41) has a scattering surface (43) arranged opposite to its reflective surface (42). The scattering surface (43) is provided with light scattering microstructures, which are used to scatter part of the ultraviolet rays into the airflow channel when the reflective blade (41) rotates.

3. The medical infection control ultraviolet disinfection device according to claim 1, characterized in that, It also includes a cleaning component (5), which includes a base on which a cleaning member (51) is rotatably connected. An elastic element (52) is fixedly connected inside the cleaning member (51). A limiting strip (53) is fixed to one end of the elastic element (52) away from the cleaning member (51), and a support strip (54) is fixed to one end of the limiting strip (53) away from the cleaning member (51).

4. The medical infection control ultraviolet disinfection device according to claim 3, characterized in that, A movable rod (541) is rotatably connected to the support bar (54), and a cleaning bar (542) is provided on the side of the second cleaning part (544) away from the cleaning component (51) and rotatably connected to the movable rod (541).

5. A medical infection control ultraviolet disinfection device according to claim 4, characterized in that, The reflective surface (42) is a hard metal-based high-reflectivity coating surface, and the scattering surface (43) is a dust-repellent polymer microstructure surface; The cleaning strip (542) includes a first cleaning part (543) and a second cleaning part (544) arranged sequentially along the radial direction of the reflective blade (41). The first cleaning part (543) is a hard scraper that contacts the rotation trajectory of the reflective surface (42), and the second cleaning part (544) is a soft brush that contacts the rotation trajectory of the scattering surface (43).

6. A medical infection control ultraviolet disinfection device according to claim 4, characterized in that, The movable rod (541) that is not in contact with the reflective blade (41) rotates downward, and the cleaning strip (542) is in the retracted state.

7. The medical infection control ultraviolet disinfection device according to claim 1, characterized in that, It also includes a photosensitive sensor fixedly installed inside the housing (1), with its photosensitive surface facing the rotation path of the reflective blade (41), for receiving ultraviolet rays reflected by the reflective surface (42) and the scattering surface (43), so as to determine the cleanliness of the reflective blade (41) based on the received light intensity fluctuation signal.

8. The medical infection control ultraviolet disinfection device according to claim 1, characterized in that, It also includes an adjustment component (2), which is set in the air flow channel and is used to drive and control the air pressure of air flowing from the air inlet pipe (11) into the housing (1). The adjustment component (2) includes a sealed housing (21) connected to the air inlet pipe (11). An air outlet (22) is provided on the outer surface of the sealed housing (21). A rotating blade (23) is provided inside the sealed housing (21).

9. A medical infection control ultraviolet disinfection device according to claim 8, characterized in that, A connecting shaft (231) is provided at the connection between the blade (23) and the sealing housing (21). An electromagnetic damping bearing (232) is provided between the connecting shaft (231) and the inner wall of the blade (23). The connecting shaft (231) and the electromagnetic damping bearing (232) are coaxially arranged. Electricity is supplied to the electromagnetic damping bearing (232) to adjust the damping value when the connecting shaft (231) rotates.

10. A medical infection control ultraviolet disinfection device according to claim 4, characterized in that, The inner wall of the housing (1) is provided with an arc-shaped groove (31), and a cover (32) is provided in the arc-shaped groove (31). The inner wall of the cover (32) is provided with a reflective hole (33), and the bottom wall of the housing (1) is provided with an irradiation tube (34).

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