Medical air purification sterilizer

Abstract

The present application relates to a kind of medical air purification sterilization machine, including shell, be located on the air inlet and air outlet of shell, be located in shell for the air duct of intercommunication air inlet and air outlet, be located in air duct for filtering device for carrying out filtration to air, air can be inhaled into air duct from air inlet and air is discharged from air outlet by fan and can be carried out to air by ultraviolet generator, shell also has a for installing ultraviolet generator and with the installation space of shell communication, operating shell can open installation space to make ultraviolet generator lose the shade of shell, the sterilization machine except having conventional air purification sterilization function, after operating shell, ultraviolet generator can be removed to the shade of ultraviolet generator, to make the ultraviolet of ultraviolet generator emission can be directly in room, to directly carry out disinfection to the bacteria of environment, which can reduce the frequency of hospital using drug to carry out disinfection to room to some extent.

Description

Technical Field

[0001] This invention belongs to the field of air disinfection technology, specifically relating to a medical air purification and disinfection machine. Background Technology

[0002] Hospitals typically install air purification and disinfection equipment in their rooms to purify and disinfect the air. The most common type of air purification and disinfection equipment is the air purification and disinfection machine. Some air purification and disinfection machines are equipped with ultraviolet lamps to irradiate germs in the air and kill them. However, the ultraviolet lamps in the disinfection machine usually cannot directly irradiate the interior of the room, so they do not have the function of directly disinfecting the interior of the room. Therefore, in order to address the above problem, we propose a medical air purification and disinfection machine. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a medical air purification and disinfection machine that can directly disinfect the surrounding environment.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A medical air purification and disinfection machine includes a housing, an air inlet and an air outlet disposed on the housing, an air duct located inside the housing for connecting the air inlet and the air outlet, a filter device located inside the air duct for filtering air, a fan capable of drawing air from the air inlet into the air duct and expelling air from the air outlet, and an ultraviolet generator capable of disinfecting the air. The housing also has an installation space for installing the ultraviolet generator and communicating with the housing. By manipulating the housing, the installation space can be opened so that the ultraviolet generator is no longer covered by the housing.

[0006] Furthermore, the housing includes a fixed housing and a movable housing that is longitudinally slidably assembled with the fixed housing. The movable housing can be fixed to the fixed housing to restrict the longitudinal sliding of the movable housing relative to the fixed housing. At the same time, the movable housing can be released from the fixed housing to allow the movable housing to return to a state where it can slide longitudinally relative to the fixed housing. The air inlet is located on the lower side of the fixed housing. The air duct is located inside the fixed housing and extends upward through the fixed housing to form the air outlet at the upper end of the fixed housing. The ultraviolet generator is connected to the fixed housing and located above the air outlet. The housing also includes a first vent plate connected to the fixed housing and located above the ultraviolet generator. The upper side of the fixed housing, the lower side of the first vent plate, and the inner side of the movable housing enclose the installation space. The movable housing can slide up and down to close or open the installation space. When the movable housing slides upward to the uppermost end of its sliding stroke, it can cooperate with the first vent plate to close the air outlet.

[0007] Furthermore, the housing also includes a bracket disposed on the upper end of the fixed housing for supporting the ultraviolet generator. The upper side of the bracket, the lower side of the first vent plate, and the inner side of the movable housing enclose the installation space. The ultraviolet generator includes at least one ultraviolet generating unit. The ultraviolet generating unit includes a lamp holder rotatably connected to the upper end of the bracket and an ultraviolet lamp mounted on the lamp holder. Rotating the lamp holder allows the ultraviolet lamp to extend from the side of the installation space.

[0008] Furthermore, the bracket includes a support member and a second vent plate fixed to the upper end of the support member. The upper side of the second vent plate, the lower side of the first vent plate, and the inner side of the moving housing enclose the installation space. The ultraviolet generator is located on the upper side of the second vent plate.

[0009] Furthermore, the ultraviolet generator has N ultraviolet generating units, and the number of ultraviolet generating units N is greater than or equal to 2.

[0010] Furthermore, the ultraviolet generating unit has a gear portion coaxially arranged with the rotation axis of the lamp holder, and the housing also includes a gear ring rotatably connected to the fixed housing. N ultraviolet generating units are distributed at equal angles around the rotation axis of the gear ring, and the gear portion of each ultraviolet generating unit meshes with the inner side of the gear ring.

[0011] Furthermore, the toothed ring has at least one locking mechanism on its side. The locking mechanism includes an assembly shell located inside the toothed ring, a locking bolt slidably assembled in the assembly shell and able to extend outward from the toothed ring, and an elastic member on the assembly shell for pushing the locking bolt outward. The locking bolt cannot be completely detached from the assembly shell.

[0012] The moving housing has at least one locking hole that penetrates the inner and outer sides of the moving housing. The number of locking holes is the same as the number of locking bolts and their positions correspond one-to-one with the positions of the locking bolts. The moving housing can only slide longitudinally relative to the fixed housing. When the locking bolt is inserted into the locking hole, it can restrict the moving housing from sliding longitudinally relative to the fixed housing. In this state, the moving housing can cooperate with the first vent plate to seal the air outlet.

[0013] Furthermore, the moving housing is a cylindrical structure and coaxially arranged with the toothed ring. At least one combined sliding groove is provided on the inner side of the moving housing. The number of combined sliding grooves is the same as the number of lock holes and their positions correspond one-to-one. The combined sliding groove includes a straight sliding groove parallel to the sliding direction of the moving housing and a spiral sliding groove connected to the upper end of the straight sliding groove and extending spirally upward around the axis of the moving housing. The lower end of the straight sliding groove of each combined sliding groove is connected to the corresponding lock hole. The bolt can extend into the combined sliding groove and slide relative to the combined sliding groove. When the bolt is at the upper end of the straight sliding groove or above, the installation space is in an open state. When the bolt is at the upper end of the spiral sliding groove, the ultraviolet lamp is in a state of extending from the side of the installation space.

[0014] Furthermore, the lower side of the fixed housing is provided with an air inlet that extends through both the inside and outside to form the air inlet.

[0015] Furthermore, the movable housing is slidably disposed outside the fixed housing, and the inner wall of the movable housing near the air inlet has a cleaning element that contacts the side wall of the fixed housing and corresponds to the position of the air inlet.

[0016] The present invention provides a medical air purification and disinfection machine. In addition to having conventional air purification and disinfection functions, the machine can remove the shield of the ultraviolet generator by manipulating its casing, so that the ultraviolet rays emitted by the ultraviolet generator can directly shine into the room to directly disinfect germs in the environment. This can reduce the frequency of hospitals using drugs to disinfect rooms to a certain extent. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a schematic diagram showing the installation space being closed in one embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram showing the installation space being open in one embodiment of the present invention;

[0020] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0021] Figure 4 This is an exploded view of an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the moving housing in one embodiment of the present invention;

[0023] Figure 6 This is a schematic cross-sectional view of the toothed ring in one embodiment of the present invention;

[0024] Figure 7 for Figure 6 Enlarged schematic diagram of the structure at point B.

[0025] The meanings of the labels in the attached diagram are as follows:

[0026] Housing 1, Fixed housing 11, Air inlet 111, Connecting rod 112, Limiting slide bar 113, Moving housing 12, Lock hole 121, Combined slide groove 122, Straight slide groove 1221, Spiral slide groove 1222, Limiting slide groove 123, First vent plate 13, Bracket 14, Support component 141, Second vent plate 142, Rotating shaft 1421, Rotating shaft through groove 1422, Nut 1423, Gear ring 15, Locking mechanism 151, Assembly housing 1511, Locking bolt 1512, Elastic component 1513, Limiting plate 1514, Slide hole 152, Air inlet 2, Ultraviolet generator 5, Ultraviolet generating unit 51, Lamp holder 511, Ultraviolet lamp 512, Gear part 513, Limiting ring 514, Installation space 6. Detailed Implementation

[0027] The invention will now be further described with reference to the accompanying drawings.

[0028] like Figure 1 As shown, Figure 1 This is a schematic diagram of the installation space being closed in one embodiment of the present invention. The medical air purification and disinfection machine of this embodiment includes a housing 1, an air inlet 2 and an air outlet provided on the housing 1, an air duct (not shown in the figure) located inside the housing 1, a filter device located in the air duct 13, a fan, and an ultraviolet generator 5. The fan is located in the air duct. When the fan is working, it can draw outside air into the air duct through the air inlet 2. The air will be filtered by the filter device, which can be a filter element that can filter dust particles or / and activated carbon with adsorption capacity. The air entering the air duct will also pass through the ultraviolet generator 5. The ultraviolet generator 5 can emit ultraviolet light to disinfect germs in the air. The filtered and disinfected air can be discharged through the air outlet. This cycle can purify and disinfect the air in the surrounding environment. For example, the medical air purification and disinfection machine can be placed in a hospital room to purify and disinfect the air in the room to provide a better air environment.

[0029] This application incorporates the following features to enable the medical air purification and disinfection machine to directly disinfect its surrounding environment: Figure 2 As shown, Figure 2This is a schematic diagram showing the installation space in one embodiment of the present invention when it is open. Specifically, the housing 1 also has an installation space 6 for mounting an ultraviolet generator 5 and communicating with the housing 1. Operating the housing 1 can open the installation space 6, allowing the ultraviolet generator 5 to be unshielded by the housing 1. When disinfection and sterilization of the environment is required, such as disinfection of a hospital room, operating the housing 1 to open the installation space 6 allows the ultraviolet generator 5 to be unblocked, and the ultraviolet rays emitted by the ultraviolet generator 5 can then irradiate the room to directly disinfect germs. In actual use, if there are people in the room, the installation space 6 can be closed, allowing the medical air purification and disinfection machine to operate in a circulating disinfection mode. If there is no one in the room, the installation space 6 can be opened, allowing the medical air purification and disinfection machine to directly disinfect the room, thereby improving disinfection efficiency.

[0030] like Figure 2 As shown, in this embodiment, the housing 1 includes a fixed housing 11, a movable housing 12 that is longitudinally slidably assembled with the fixed housing 11, and a first ventilated plate 13 located above the fixed housing 11. The upper side of the fixed housing 11, the lower side of the first ventilated plate 13, and the inner side of the movable housing 12 enclose an installation space 6. The movable housing 12 can be fixed to the fixed housing 11 to restrict the movable housing 12 from sliding longitudinally relative to the fixed housing 11. At the same time, the movable housing 12 can be released from the fixed housing 11 to restore the movable housing 12 to a state where it can slide longitudinally relative to the fixed housing 11. This fixing method can be any of the existing technologies. For example, a fixing structure can be set together on the fixed housing 11 and the movable housing 12 for fixing. More specifically, hook and loop fasteners and hook and loop fasteners can be respectively set on the movable housing 12 and the fixed housing 11. The fixing is achieved by bonding the hook and loop fasteners to the hook and loop fasteners and the fixing is achieved by separating the hook and loop fasteners from the hook and loop fasteners. This embodiment is only an example. In fact, other fixing methods that can fix the fixed housing 11 and the movable housing 12 can also be considered.

[0031] like Figure 1 and Figure 2 As shown, in this embodiment, the lower side of the fixed housing 11 has several air inlets 111 that penetrate both internally and externally. These air inlets 111 form air inlets 2, and are evenly distributed around the perimeter of the fixed housing 11. This structure can perform preliminary filtration of the incoming air to intercept coarse particles such as hair, willow catkins, dander, and cotton fibers. The arrangement of the air inlets 2 is only one example, and is not limited to the above-described implementation. For example, in some embodiments, the air inlets 2 can also be located at the bottom of the moving housing 12. In this embodiment, the air duct is located inside the fixed housing 11 and extends upward through the fixed housing 11 to form an air outlet at the upper end of the fixed housing 11. The ultraviolet generator 5 is connected to the fixed housing 11 and is located above the air outlet.

[0032] In the initial state, the moving housing 12 is located at the uppermost end of its sliding stroke. In this state, the upper end of the moving housing 12 is aligned with the upper end of the first vent plate 13 to seal the air outlet. The first vent plate 13 protects the upper side of the ultraviolet generator 5. The installation space 6 is closed in this state, and the ultraviolet generator 5 is shielded by the housing 1. When the medical air purifier and sterilizer operates in this state, the filtered air in the duct will be discharged into the installation space 6 through the air outlet. The air entering the installation space 6 will be sterilized by the ultraviolet light emitted by the ultraviolet generator 5 to remove germs from the air. The sterilized air can be discharged through the first vent plate 13. Since this working method does not radiate ultraviolet light to the surroundings, it is suitable for use when there are people in the room.

[0033] When the housing 1 opens the installation space 6, the movable housing 12 is released from the fixed housing 11, and then the movable housing 12 is slid down until it is below the upper end of the fixed housing 11, so that the installation space 6 is in the open state. At this time, the ultraviolet generator 5 loses the shielding of the housing 1. When the medical air purification and disinfection machine is working in this state, the ultraviolet rays emitted by the ultraviolet generator 5 can irradiate the room to directly disinfect germs in the room. This can reduce the frequency of hospitals using drugs to disinfect rooms to a certain extent. This working mode is suitable for use when the room is unoccupied.

[0034] After prolonged use of the medical air purification and disinfection machine, coarse particles such as dust and lint may adhere to the air inlet 111 on the side wall of the fixed housing 11. To clean these coarse particles, the following improvements are made in this embodiment: Specifically, the movable housing 12 is slidably disposed outside the fixed housing 11. The inner wall of the movable housing 12 near the air inlet 111 has a cleaning element (not shown in the figure) that contacts the side wall of the fixed housing 11 and corresponds to the position of the air inlet 111. The cleaning element may be an annular rubber ring or a sponge ring. When the housing 1 is operated to open the installation space 6, the movable housing 12 will slide downwards below the upper end of the fixed housing 11. During this process, the cleaning element will completely wipe across all the air inlets 111, scraping off the attached coarse particles to achieve a cleaning effect.

[0035] like Figure 4 As shown, Figure 4This is an exploded view of an embodiment of the present invention. To enhance the disinfection capabilities of the medical air purification and disinfection machine for rooms, this embodiment also makes the following improvements. Specifically, the housing 1 further includes a bracket 14 disposed at the upper end of the fixed housing 11 for supporting the ultraviolet generator 5, and a toothed ring 15 rotatably connected to the fixed housing 11. The bracket 14 includes a support member 141 and a second vent plate 142 fixed to the upper end of the support member 141. The upper side of the second vent plate 142, the lower side of the first vent plate 13, and the inner side of the moving housing 12 enclose an installation space 6. It is worth mentioning that the fixed housing 11 also includes a connecting rod 112 detachably connected between the lower middle part of the first vent plate 13 and the upper middle part of the second vent plate 142, thereby connecting the first vent plate 13 to the fixed housing 11.

[0036] In addition to the above-described content, this embodiment also provides a detailed description of the ultraviolet generator 5. Specifically, the ultraviolet generator 5 includes four ultraviolet generating units 51. Each ultraviolet generating unit 51 includes a lamp holder 511 rotatably connected to the upper end of the second vent plate 142, an ultraviolet lamp 512 mounted on the lamp holder 511, and a gear part 513 coaxially arranged with the rotation axis of the lamp holder 511. The four ultraviolet generating units 51 are distributed at equal angles around the rotation axis of the gear ring 15, and the gear part 513 of each ultraviolet generating unit 51 meshes with the inner side of the gear ring 15.

[0037] like Figure 3 and Figure 4 As shown, in order to achieve a rotatable connection between the lamp holder 511 and the second vent plate 142, in this embodiment, a vertically arranged rotating shaft 1421 is fixedly connected to the upper end of the second vent plate 142. A rotating shaft through groove 1422 is opened in the middle of the lamp holder 511, which can be sleeved on the outside of the rotating shaft 1421. The lamp holder 511 is sleeved on the outside of the rotating shaft 1421 through the rotating shaft through groove 1422. A nut 1423 for restricting the upward movement of the lamp holder 511 is also threaded on the upper side of the rotating shaft 1421. In this way, a rotatable connection can be achieved between the lamp holder 511 and the second vent plate 142. It should be understood that the above-mentioned rotatable connection method is only an example and is not used to limit the rotatable connection method between the lamp holder 511 and the second vent plate 142.

[0038] To enable a rotatable connection between the gear ring 15 and the housing 11, in this embodiment, the gear ring 15 abuts against the upper end of the housing 11. A limiting ring 514 for restricting the upward movement of the gear ring 15 is also provided on the side of the lamp holder 511. Four gear portions 513 are distributed at equal angles around the rotation axis of the gear ring 15 to laterally limit the gear ring 15. In this way, a rotatable connection can be achieved between the gear ring 15 and the housing 11. It should be understood that the above-described rotatable connection method is only an example and is not used to limit the rotatable connection method between the gear ring 15 and the housing 11.

[0039] When direct disinfection of the room is required, the movable housing 12 is released from the fixed housing 11, and the movable housing 12 is slid down to a position below the upper end of the fixed housing 11, so that the installation space 6 is in an open state. Then, the gear ring 15 is rotated. When the gear ring 15 rotates, it will drive the four lamp holders 511 and the ultraviolet lamps 512 on the lamp holders 511 to rotate synchronously through the four gear parts 513 meshing with it. After the ultraviolet lamps 512 extend from the side of the installation space 6, the rotation stops. After the ultraviolet lamps 512 extend from the side of the installation space 6, the upper and lower sides of the ultraviolet radiation direction will not be blocked by the first vent plate 13 and the second vent plate 142. This can expand the disinfection area and increase the amount of ultraviolet radiation. It can be seen that after the ultraviolet lamps 512 extend from the side of the installation space 6, the disinfection ability of the medical air purification and disinfection machine in the room will be greatly enhanced, and the disinfection efficiency is high.

[0040] The operation of turning the ultraviolet lamp 512 back into the installation space 6 is the same as the operation described above, and will not be repeated here.

[0041] like Figure 4-7 As shown, to facilitate the user's rotation of the ultraviolet lamp 512, this embodiment also makes the following settings. Specifically, the side of the toothed ring 15 is provided with two locking mechanisms 151 symmetrically distributed around the axis of the toothed ring 15. The locking mechanism 151 includes an assembly shell 1511 located inside the toothed ring 15, a locking bolt 1512 slidably assembled inside the assembly shell 1511 and capable of extending outward from the toothed ring 15, and an elastic element 1513 located on the assembly shell 1511 for pushing the locking bolt 1512 outward. The elastic element 1513 is specifically a helical spring. The bolt 1512 cannot be completely detached from the assembly housing 1511. Specifically, a limiting plate 1514 is provided at the end of the bolt 1512 near the elastic member 1513. The diameter of the limiting plate 1514 is larger than the diameter of the sliding hole 152 on the toothed ring 15 for the bolt 1512 to extend out. Thus, the limiting plate 1514 can restrict the bolt 1512 from completely detaching from the assembly housing 1511. It should be understood that the above-mentioned structure for restricting the bolt 1512 from completely detaching from the assembly housing 1511 is only an example. In other embodiments, other structures that can restrict the bolt 1512 from completely detaching from the assembly housing 1511 may also be considered.

[0042] To cooperate with the above structure, the side of the moving housing 12 is also provided with two locking holes 121 that penetrate the inner and outer sides of the moving housing 12 and two combined sliding grooves 122. The positions of the locking holes 121 and the combined sliding grooves 122 correspond one-to-one with the positions of the bolts 1512. When the bolts 1512 are inserted into the locking holes 121, they can restrict the moving housing 12 from sliding longitudinally relative to the fixed housing 11. In this state, the moving housing 12 can cooperate with the first vent plate 13 to close the air outlet. The combined slide groove 122 includes a straight slide groove 1221 parallel to the sliding direction of the moving housing 12 and a spiral slide groove 1222 connected to the upper end of the straight slide groove 1221 and spirally extending upward around the axis of the moving housing 12. The lower end of the straight slide groove 1221 of each combined slide groove 122 is connected to the corresponding lock hole 121. The bolt 1512 can extend into the combined slide groove 122 and slide relative to the combined slide groove 122. When the bolt 1512 is at or above the upper end of the straight slide groove 1221, the installation space 6 is in the open state. When the bolt 1512 is at the upper end of the spiral slide groove 1222, the ultraviolet lamp 512 is in the state of extending out from the side of the installation space 6. The movable housing 12 can only slide longitudinally relative to the fixed housing 11. Specifically, the fixed housing 11 has a longitudinally arranged limiting slide bar 113 on its side, and the movable housing 12 has a limiting slide groove 123 on its inner side for sliding assembly with the limiting slide bar 17. The limiting slide bar 113 and the limiting slide groove 123 can restrict the movable housing 12 from rotating relative to the fixed housing 11. In this way, the movable housing 12 can only slide longitudinally relative to the fixed housing 11. It should be understood that the above-mentioned structure for restricting the rotation of the movable housing 12 relative to the fixed housing 11 is only an example. In other embodiments, other structures that can restrict the rotation of the movable housing 12 relative to the fixed housing 11 can also be considered.

[0043] Based on the above limitations, when using a medical air purification and disinfection machine to disinfect a room, the two locking bolts 1512 can be pressed against the moving housing 12. After the two locking bolts 1512 overcome the elastic force of the elastic element 1513 and retract into the two straight sliding grooves 1221, the moving housing 12 is released from the fixed housing 11. At this time, the moving housing 12 can be slid downwards. During the downward sliding of the moving housing 12, the two locking bolts 1512 will slide in the two combined sliding grooves 122 respectively. When the moving housing 12 slides to a position lower than the upper end of the fixed housing 11, the locking bolts 1512 will be at the upper end of the straight sliding groove 1221. Afterwards, as the moving housing 12 continues to slide downwards, the locking bolts 1512 will enter the spiral sliding groove 1222 and slide. During this process, since the moving housing 12 cannot rotate, the spiral groove 1222 will cooperate with the locking bolt 1512 to force the toothed ring 15 to rotate. The toothed ring 15 will then drive each ultraviolet lamp 512 to rotate. When the locking bolt 1512 is at the upper end of the spiral groove 1222, the moving housing 12 will no longer be able to slide downwards. At this time, each ultraviolet lamp 512 will be in a state of extending from the side of the installation space 6. In this way, the user does not need to rotate the toothed ring 15 separately. Correspondingly, when the moving housing 12 slides upwards to close the installation space 6, each ultraviolet lamp 512 can also automatically retract into the installation space 6 without deliberately rotating the toothed ring 15. This saves operating steps and is convenient for users.

[0044] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A medical air purification and disinfection machine, characterized in that: The shell further has a mounting space for mounting the ultraviolet generator and communicating with the shell, and the shell can be operated to open the mounting space to remove the ultraviolet generator from the cover of the shell. The shell comprises a fixed shell and a movable shell longitudinally slidingly assembled with the fixed shell, the movable shell can be fixed with the fixed shell to limit the longitudinal sliding of the movable shell relative to the fixed shell, and the movable shell can be released from the fixed shell to restore the state of longitudinal sliding of the movable shell relative to the fixed shell, the air inlet is located on the lower side of the fixed shell, the air duct is located in the fixed shell and penetrates the fixed shell upward to form the air outlet on the upper end of the fixed shell, the ultraviolet generator is connected with the fixed shell and located above the air outlet, the shell further comprises a first air-permeable plate connected with the fixed shell and located above the ultraviolet generator, the upper side of the fixed shell, the lower side of the first air-permeable plate and the inner side of the movable shell form the mounting space, and the upper and lower sliding of the movable shell can close or open the mounting space, and when the movable shell slides upward to the uppermost end of the sliding stroke, the first air-permeable plate can cooperate with the movable shell to close the air outlet.

2. The medical air purification and sterilization machine according to claim 1, characterized in that: The shell further comprises a support provided on the upper end of the fixed shell for supporting the ultraviolet generator, the upper side of the support, the lower side of the first air-permeable plate and the inner side of the movable shell form the mounting space, the ultraviolet generator comprises at least one ultraviolet generating unit, the ultraviolet generating unit comprises a lamp holder rotatably connected to the upper end of the support and an ultraviolet lamp assembled on the lamp holder, and rotating the lamp holder can make the ultraviolet lamp extend from the side of the mounting space.

3. The medical air purification and sterilization machine according to claim 2, characterized in that: The support comprises a supporting member and a second air-permeable plate fixed to the upper end of the supporting member, the upper side of the second air-permeable plate, the lower side of the first air-permeable plate and the inner side of the movable shell form the mounting space, and the ultraviolet generator is provided on the upper end of the second air-permeable plate.

4. The medical air purification and sterilization machine according to claim 2, characterized in that: The ultraviolet generator has N ultraviolet generating units, and the number N of the ultraviolet generating units is greater than or equal to 2.

5. A medical air purification and disinfection machine according to claim 4, characterized in that: The ultraviolet generating unit has a gear portion coaxially arranged with the rotation axis of the lamp holder, the shell further comprises a gear ring rotatably connected with the fixed shell, and N ultraviolet generating units are distributed at equal angles around the rotation axis of the gear ring, and the gear portion of each ultraviolet generating unit is engaged in the inner side of the gear ring.

6. A medical air purification and disinfection machine according to claim 5, characterized in that: The side of the gear ring is provided with at least one lock bolt mechanism, the lock bolt mechanism comprises an assembly shell provided in the inner side of the gear ring, a lock bolt slidingly assembled in the assembly shell and capable of extending outward from the gear ring, and an elastic member provided on the assembly shell for pushing the lock bolt outward, and the lock bolt cannot completely separate from the assembly shell. The movable shell is provided with at least one lock hole penetrating the inside and outside of the movable shell, the number of the lock holes is consistent with the number of the lock bolts and the positions of the lock holes correspond to the positions of the lock bolts one by one, the movable shell can only slide longitudinally relative to the fixed shell, the longitudinal sliding of the movable shell relative to the fixed shell can be limited when the lock bolt is inserted into the lock hole, and the movable shell can close the air outlet together with the first air permeable plate in this state.

7. A medical air purification and disinfection machine according to claim 6, characterized in that: The movable shell is a cylindrical structure and coaxially arranged with the tooth ring, at least one combined sliding groove is formed in the inside of the movable shell, the number of the combined sliding grooves is consistent with the number of the lock holes and the positions of the combined sliding grooves correspond to the positions of the lock holes one by one, the combined sliding groove comprises a straight sliding groove parallel to the sliding direction of the movable shell and a spiral sliding groove connected to the upper end of the straight sliding groove and spirally extending upwards along the axis of the movable shell, the lower end of the straight sliding groove of each combined sliding groove is communicated with the corresponding lock hole, the lock bolt can extend into the combined sliding groove and slide relative to the combined sliding groove, when the lock bolt is located above the upper end of the straight sliding groove, the installation space is in the open state, when the lock bolt is located at the upper end of the spiral sliding groove, the ultraviolet lamp is in the state of extending from the side of the installation space.

8. The medical air purification and sterilization machine according to any one of claims 2-7, characterized in that: The lower part of the side wall of the fixed shell is provided with an air inlet hole penetrating the inside and outside to form the air inlet.

9. A medical air purification and disinfection machine according to claim 8, characterized in that: The movable shell is slidably arranged outside the fixed shell, the inner wall of the side of the movable shell close to the air inlet hole is provided with a cleaning member in contact with the side wall of the fixed shell and corresponding to the position of the air inlet hole.

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