CN112378031A - Meeting room that facilitates use is with portable air purification device - Google Patents
Meeting room that facilitates use is with portable air purification device Download PDFInfo
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- CN112378031A CN112378031A CN202011275689.0A CN202011275689A CN112378031A CN 112378031 A CN112378031 A CN 112378031A CN 202011275689 A CN202011275689 A CN 202011275689A CN 112378031 A CN112378031 A CN 112378031A
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- groove
- grooves
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- air purification
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/082—Grilles, registers or guards
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/32—Supports for air-conditioning, air-humidification or ventilation units
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The invention belongs to the field of air purification equipment, and particularly relates to a convenient-to-use movable air purification device for a meeting room, which aims at solving the problems that the use position of the existing air purification equipment is fixed, the position is inconvenient to flexibly adjust, and the use stability is poor. The air purification equipment is reasonable in structure, convenient to operate, flexible in use position, capable of flexibly adjusting the position, the use height and the use stability, good in use stability, convenient to disassemble and assemble in the whole structure and convenient to replace the filter element.
Description
Technical Field
The invention relates to the technical field of air purification equipment, in particular to a convenient-to-use mobile air purification device for a meeting room.
Background
An air purifier, also known as an air cleaner, an air freshener and a purifier, is a product capable of adsorbing, decomposing or converting various air pollutants and effectively improving the air cleanliness, and is mainly divided into household, commercial, industrial and building types. Common air purification techniques are: adsorption technology, anion technology, catalytic technology, photocatalyst technology, superstructure mineralization by light technology, HEPA high efficiency filtration technology, electrostatic precipitation technology, etc.; the material technology mainly comprises the following steps: photocatalyst, active carbon, synthetic fiber, HEPA high-efficiency material, negative ion generator and the like. The existing air purifier is mostly of a composite type, namely, a plurality of purification technologies and material media are adopted at the same time;
however, the existing air purification equipment is fixed in use position, inconvenient and flexible in position adjustment and poor in use stability.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a convenient mobile air purification device for a meeting room.
In order to achieve the purpose, the invention adopts the following technical scheme:
a convenient movable air purification device for a meeting room comprises a movable base, wherein a plurality of connecting seats are fixedly arranged at the bottom of the movable base, rollers are rotatably arranged at the bottoms of the connecting seats, two fixed plates are fixedly arranged at the top of the movable base, moving grooves are formed in the sides, close to each other, of the two fixed plates, moving blocks are slidably arranged in the two moving grooves, the same purification box is fixedly arranged at the side, close to each other, of the two moving blocks, an air outlet grid is fixedly arranged at the top of the purification box, a connecting frame is fixedly arranged in the purification box, a centrifugal fan is fixedly arranged on the connecting frame, a mounting hole is formed in the bottom of the purification box, a bottom cover is arranged in the mounting hole, an air inlet grid is arranged on the bottom cover, a filter element is arranged at the top of the bottom cover, clamping plates are slidably mounted in the two fixing grooves, one sides of the two clamping plates, which are far away from each other, are contacted with the filter element, springs are fixedly mounted on one sides of the two clamping plates, which are close to each other, one ends of the springs are fixedly mounted on the inner walls of the corresponding fixing grooves, grooves are formed in both sides of the bottom cover, stoppers are slidably mounted in the two grooves, limiting grooves are formed in the inner walls of both sides of the mounting hole, the stoppers are mounted in the corresponding limiting grooves, first thread grooves are formed in one ends of the two stoppers, first lead screws are rotatably mounted on the inner walls of one sides of the two grooves, the first lead screws are threadedly mounted in the corresponding first thread grooves, first bevel gears are fixedly sleeved on the two first lead screws, a fixing cavity is formed in the bottom cover, a connecting hole is formed in the inner wall of the top of the fixing cavity, a connecting rod is rotatably mounted in, second bevel gear and the meshing of first bevel gear, the other end fixed mounting of connecting rod has first band pulley, the spread groove has been seted up on one side inner wall of fixed slot, one side fixed mounting of grip block has the rack, rack slidable mounting has in the spread groove, the control hole has been seted up on one side inner wall in fixed chamber, the control lever is installed to the downthehole internal rotation of control, the one end fixed mounting of control lever has the gear, wheel and rack toothing, the other end fixed mounting of control lever has the second band pulley, the second band pulley has same belt with the meshing of first band pulley, it installs rotatory piece to rotate on one side inner wall in fixed chamber, the one end fixed mounting of rotatory piece has the third band pulley, third band pulley and belt meshing, the other end fixed mounting of rotatory.
Preferably, the mounting groove has all been seted up to the bottom of two connecting seats, and the gyro wheel rotates to be installed in the mounting groove that corresponds, has all seted up the transmission hole on the inner wall of one side of two mounting grooves, and same transfer line is installed in two transmission downtheholes rotations, and fixed cover is equipped with the control wheel on the transfer line, has seted up a plurality of draw-in grooves on the control wheel, and the control groove has been seted up to the bottom of removal base.
Preferably, slidable mounting has the control post in the control groove, and the bottom fixed mounting of control post has the fixture block, and the fixture block is installed in the draw-in groove, and the second thread groove has been seted up on the top of control post, has seted up on the top inner wall of mounting groove and has rotated the hole, rotates downthehole rotation and install the screw rod, and the screw rod screw thread is installed in the second thread groove, and the top fixed mounting of screw rod has the rotation wheel.
Preferably, the inner wall of the control groove is provided with a sliding groove, the control column is fixedly provided with a sliding block, the sliding block is slidably mounted in the sliding groove, the sliding block is driven to slide in the sliding groove when the control column moves, and the stability of the control column during moving can be improved.
Preferably, threaded holes are formed in the tops of the two moving blocks, extension grooves are formed in the inner walls of the bottoms of the two moving grooves, the second lead screws are rotatably mounted in the two extension grooves, and the second lead screws are mounted in the corresponding threaded holes in a threaded mode.
Preferably, all fixed the cover on two second lead screws is equipped with the worm wheel, and same round bar is installed to two extension inslot rotations, and the equal fixed mounting in both ends of round bar has the worm, and worm and the worm wheel meshing that corresponds, fixed the cover on the round bar are equipped with the handle, and the worm wheel drives the second lead screw rotation that corresponds, and the second lead screw drives the movable block that corresponds and removes, and the movable block drives the purifying box and removes.
Preferably, a sliding groove is formed in the inner wall of the moving groove, a sliding block is fixedly mounted on the moving block, the sliding block is slidably mounted in the sliding groove, and the moving block drives the sliding block to slide in the sliding groove when moving, so that the position of the moving block during moving can be stabilized.
Preferably, the centrifugal fan is fixedly connected to the connecting frame through a bolt.
Compared with the prior art, the invention has the beneficial effects that:
in the scheme, the rotating wheel is rotated, the screw rod drives the control column to move, the clamping block slides out of the clamping groove, the fixing limit of the control wheel can be cancelled, the moving base is moved, the roller wheel can drive the purifying equipment to move, the rotating wheel is rotated reversely, the position of the purifying equipment can be fixed again, the handle is rotated, the round rod drives the two worms to rotate, the worm wheel drives the corresponding second screw rod to rotate, the moving block drives the purifying box to move, the purifying position can be adjusted, the centrifugal fan drives the air in the purifying box to flow, the external air enters the purifying box from the air inlet grille, the filter element can filter and purify the air, and finally the air is discharged from the air outlet grille to purify the surrounding air, the adjusting seat is rotated, the belt drives the first belt wheel and the second wheel to rotate, the second bevel wheel drives the first bevel wheel to rotate, the first bevel wheel drives the first screw rod to rotate, the fixed limit of the bottom cover can be cancelled, meanwhile, the second belt wheel drives the control rod to rotate, the control rod drives the gear to rotate, the rack drives the clamping plates to move, and the clamping plates extrude the spring, so that the two clamping plates cancel the fixed limit of the filter element, and the filter element is convenient to replace;
the air purification equipment is reasonable in structure, convenient to operate, flexible in use position, capable of flexibly adjusting the position, the use height and the use stability, good in use stability, convenient to disassemble and assemble in the whole structure and convenient to replace the filter element.
Drawings
FIG. 1 is a schematic view of a front view structure according to the present invention;
FIG. 2 is a perspective view of the bottom cap and filter cartridge of the present invention;
FIG. 3 is a schematic structural view of a clamping plate, a rack and a gear according to the present invention;
FIG. 4 is a schematic view of part A of the structure proposed by the present invention;
FIG. 5 is a schematic view of a portion B according to the present invention;
FIG. 6 is a schematic view of a portion C according to the present invention;
fig. 7 is a schematic structural diagram of part D according to the present invention.
In the figure: 1. moving the base; 2. a connecting seat; 3. a roller; 4. a fixing plate; 5. a moving block; 6. a purification box; 7. an air outlet grille; 8. a centrifugal fan; 9. a bottom cover; 10. an air intake grille; 11. a filter element; 12. a clamping plate; 13. a spring; 14. a limiting groove; 15. a limiting block; 16. a first lead screw; 17. a first bevel gear; 18. a connecting rod; 19. a second bevel gear; 20. a first pulley; 21. a gear; 22. a rack; 23. a control lever; 24. a second pulley; 25. a belt; 26. an adjusting seat; 27. a third belt pulley; 28. a second lead screw; 29. a worm gear; 30. a round bar; 31. a worm; 32. a handle; 33. a transmission rod; 34. a control wheel; 35. a card slot; 36. a control column; 37. a clamping block; 38. a rotating wheel; 39. a screw.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of this patent does not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one.
Referring to fig. 1-7, a portable air purification device for a conference room, which is convenient to use, comprises a movable base 1, a plurality of connecting seats 2 are fixedly installed at the bottom of the movable base 1, rollers 3 are rotatably installed at the bottoms of the connecting seats 2, two fixed plates 4 are fixedly installed at the top of the movable base 1, moving grooves are respectively formed at the adjacent sides of the two fixed plates 4, moving blocks 5 are respectively and slidably installed in the two moving grooves, the same purification box 6 is fixedly installed at the adjacent side of the two moving blocks 5, an air outlet grille 7 is fixedly installed at the top of the purification box 6, a connecting frame is fixedly installed in the purification box 6, a centrifugal fan 8 is fixedly installed on the connecting frame, an installation hole is formed at the bottom of the purification box 6, a bottom cover 9 is installed in the installation hole, an air inlet grille 10 is installed on the bottom cover 9, the filter element 11 is arranged in the purification box 6, two fixing grooves are arranged at the top of the bottom cover 9, clamping plates 12 are arranged in the two fixing grooves in a sliding manner, one sides, far away from each other, of the two clamping plates 12 are contacted with the filter element 11, springs 13 are arranged at one sides, close to each other, of the two clamping plates 12, one ends of the springs 13 are fixedly arranged on the inner walls of the corresponding fixing grooves, grooves are arranged at two sides of the bottom cover 9, limiting blocks 15 are arranged in the two grooves in a sliding manner, limiting grooves 14 are arranged on the inner walls at two sides of the mounting hole, the limiting blocks 15 are arranged in the corresponding limiting grooves, first thread grooves are arranged at one ends of the two limiting blocks 15, first lead screws 16 are rotatably arranged on the inner walls at one sides of the two grooves, the first lead screws 16 are arranged in the corresponding first thread grooves in a threaded manner, first bevel gears 17 are fixedly sleeved on, a connecting hole is formed in the inner wall of the top of the fixed cavity, a connecting rod 18 is rotatably mounted in the connecting hole, a second bevel gear 19 is fixedly mounted at one end of the connecting rod 18, the second bevel gear 19 is meshed with a first bevel gear 17, a first belt wheel 20 is fixedly mounted at the other end of the connecting rod 18, a connecting groove is formed in the inner wall of one side of the fixed groove, a rack 22 is fixedly mounted at one side of the clamping plate 12, the rack 22 is slidably mounted in the connecting groove, a control hole is formed in the inner wall of one side of the fixed cavity, a control rod 23 is rotatably mounted in the control hole, a gear 21 is fixedly mounted at one end of the control rod 23, the gear 21 is meshed with the rack 22, a second belt wheel 24 is fixedly mounted at the other end of the control rod 23, the same belt 25 is meshed with the first belt wheel 20, the third belt wheel 27 is engaged with the belt 25, and the other end of the rotating block is fixedly provided with an adjusting seat 26.
In this embodiment, the mounting groove has all been seted up to the bottom of two connecting seats 2, and gyro wheel 3 rotates to be installed in the mounting groove that corresponds, has all seted up the transmission hole on the inner wall of one side of two mounting grooves, and two transmission downtheholes rotate and install same transfer line 33, and fixed cover is equipped with control wheel 34 on the transfer line 33, has seted up a plurality of draw-in grooves 35 on the control wheel 34, and the control groove has been seted up to the bottom of moving base 1.
In this embodiment, slidable mounting has control post 36 in the control groove, and the bottom fixed mounting of control post 36 has fixture block 37, and fixture block 37 is installed in draw-in groove 35, and the second thread groove has been seted up on the top of control post 36, has seted up the rotation hole on the top inner wall of mounting groove, and the rotation downthehole rotation of rotating is installed screw rod 39, and screw rod 39 is threaded-installed in the second thread groove, and the top fixed mounting of screw rod 39 has rotating wheel 38.
In this embodiment, seted up the spout on the inner wall of control groove, fixed mounting has the slider on the control post 36, and slider slidable mounting drives the slider and slides in the spout when control post 36 removes in the spout, can promote the stability when control post 36 removes.
In this embodiment, threaded holes are formed in the tops of the two moving blocks 5, extending grooves are formed in the inner walls of the bottoms of the two moving grooves, the second lead screws 28 are rotatably mounted in the two extending grooves, and the second lead screws 28 are threadedly mounted in the corresponding threaded holes.
In this embodiment, all fixed cover is equipped with worm wheel 29 on two second lead screws 28, and same round bar 30 is installed to two extension inslot rotations, and the equal fixed mounting in both ends of round bar 30 has worm 31, and worm 31 meshes with corresponding worm wheel 29, and fixed cover is equipped with handle 32 on the round bar 30, and worm wheel 29 drives corresponding second lead screw 28 and rotates, and second lead screw 28 drives corresponding movable block 5 and removes, and movable block 5 drives purifying box 6 and removes.
In this embodiment, a sliding groove has been seted up on the inner wall of shifting chute, and fixed mounting has the sliding block on the movable block 5, and the sliding block slidable mounting is in the sliding groove, drives the sliding block and slides in the sliding groove when the movable block 5 removes, can stabilize the position when the movable block 5 removes.
In this embodiment, the centrifugal fan 8 is fixedly connected to the connecting frame by bolts.
In this embodiment, by rotating the rotating wheel 38, the rotating wheel 38 drives the screw rod 39 to rotate, the screw rod 39 drives the control column 36 to move, the control column 36 drives the fixture block 37 to move, the fixture block 37 slides out of the slot 35, so that the fixing restriction of the control wheel 34 can be cancelled, the mobile base 1 is moved, the mobile base 1 drives the plurality of rollers 3 to rotate, the rollers 3 can drive the mobile position of the purifying device, the rotating wheel 38 is rotated reversely, so that the position of the purifying device can be fixed again, the handle 32 is rotated, the handle 32 drives the round bar 30 to rotate, the round bar 30 drives the two worms 31 to rotate, the worms 31 drive the corresponding worm wheels 29 to rotate, the worm wheels 29 drive the corresponding second lead screws 28 to rotate, the second lead screws 28 drive the corresponding moving blocks 5 to move, the moving blocks 5 drive the purifying box 6 to move, so that the purifying position can be adjusted, the centrifugal fan 8 drives the air in the purifying box 6 to flow, and, the filter element 11 can filter and purify air, and finally the air is discharged from the air outlet grille 7, so that the purification of surrounding air can be realized, the adjusting seat 26 is rotated, the adjusting seat 26 drives the third belt wheel 27 to rotate, the third belt wheel 27 drives the belt 25 to move, the belt 25 drives the first belt wheel 20 and the second belt wheel 24 to rotate, the first belt wheel 20 drives the connecting rod 18 to rotate, the connecting rod 18 drives the second bevel gear 19 to rotate, the second bevel gear 19 drives the first bevel gear 17 to rotate, the first bevel gear 17 drives the first lead screw 16 to rotate, the first lead screw 16 drives the corresponding limiting block 15 to move, the limiting block 15 slides out of the limiting groove 14, so that the fixed limit of the bottom cover 9 can be cancelled, meanwhile, the second belt wheel 24 drives the control rod 23 to rotate, the control rod 23 drives the gear 21 to rotate, the gear 21 drives the rack 22 to move, the rack 22 drives the clamping plate, the two clamping plates 12 can eliminate the fixed limit of the filter element 11, and the filter element 11 can be conveniently replaced.
Compared with the prior art, the invention has the technical progress that: the air purification device is reasonable in structure, convenient to operate, flexible in use position, capable of flexibly adjusting the position, the use height and the use stability, good in use stability, convenient to disassemble and assemble in the whole structure and convenient to replace the filter element 11.
Claims (8)
1. A conveniently used movable air purification device for a meeting room comprises a movable base (1) and is characterized in that a plurality of connecting seats (2) are fixedly installed at the bottom of the movable base (1), rollers (3) are rotatably installed at the bottoms of the connecting seats (2), two fixing plates (4) are fixedly installed at the top of the movable base (1), moving grooves are formed in the mutually close sides of the two fixing plates (4), moving blocks (5) are slidably installed in the two moving grooves, the same purification box (6) is fixedly installed at the mutually close sides of the two moving blocks (5), an air outlet grating (7) is fixedly installed at the top of the purification box (6), a connecting frame is fixedly installed in the purification box (6), a centrifugal fan (8) is fixedly installed on the connecting frame, and a mounting hole is formed in the bottom of the purification box (6), a bottom cover (9) is arranged in the mounting hole, an air inlet grille (10) is arranged on the bottom cover (9), a filter element (11) is arranged at the top of the bottom cover (9), the filter element (11) is arranged in the purification box (6), two fixing grooves are formed in the top of the bottom cover (9), clamping plates (12) are arranged in the two fixing grooves in a sliding mode, one sides, far away from each other, of the two clamping plates (12) are contacted with the filter element (11), springs (13) are fixedly arranged on one sides, close to each other, of the two clamping plates (12), one ends of the springs (13) are fixedly arranged on the inner walls of the corresponding fixing grooves, grooves are formed in both sides of the bottom cover (9), limiting blocks (15) are arranged in the two grooves in a sliding mode, limiting grooves (14) are formed in the inner walls of both sides of the mounting hole, the limiting blocks (15) are arranged in, the inner walls of one sides of the two grooves are respectively and rotatably provided with a first screw rod (16), the first screw rods (16) are arranged in corresponding first thread grooves in a threaded manner, the two first screw rods (16) are respectively and fixedly sleeved with a first bevel gear (17), the bottom cover (9) is provided with a fixed cavity, the inner wall of the top of the fixed cavity is provided with a connecting hole, a connecting rod (18) is rotatably arranged in the connecting hole, one end of the connecting rod (18) is fixedly provided with a second bevel gear (19), the second bevel gear (19) is meshed with the first bevel gear (17), the other end of the connecting rod (18) is fixedly provided with a first belt wheel (20), the inner wall of one side of the fixed groove is provided with a connecting groove, one side of the clamping plate (12) is fixedly provided with a rack (22), the rack (22) is slidably arranged in the connecting groove, the inner wall, one end fixed mounting of control lever (23) has gear (21), gear (21) and rack (22) meshing, the other end fixed mounting of control lever (23) has second band pulley (24), second band pulley (24) and first band pulley (20) meshing have same belt (25), it installs rotatory piece to rotate on one side inner wall in fixed chamber, the one end fixed mounting of rotatory piece has third band pulley (27), third band pulley (27) and belt (25) meshing, the other end fixed mounting of rotatory piece has regulation seat (26).
2. The portable air purification device for meeting rooms convenient to use according to claim 1, wherein the bottoms of the two connection bases (2) are respectively provided with a mounting groove, the rollers (3) are rotatably mounted in the corresponding mounting grooves, one inner wall of each of the two mounting grooves is respectively provided with a transmission hole, the same transmission rod (33) is rotatably mounted in the two transmission holes, the transmission rod (33) is fixedly sleeved with the control wheel (34), the control wheel (34) is provided with a plurality of clamping grooves (35), and the bottom of the movable base (1) is provided with a control groove.
3. The portable air purification device for meeting rooms convenient to use according to claim 2, wherein a control post (36) is slidably mounted in the control groove, a clamping block (37) is fixedly mounted at the bottom end of the control post (36), the clamping block (37) is mounted in the clamping groove (35), a second threaded groove is formed in the top end of the control post (36), a rotating hole is formed in the inner wall of the top of the mounting groove, a screw rod (39) is rotatably mounted in the rotating hole, the screw rod (39) is threadedly mounted in the second threaded groove, and a rotating wheel (38) is fixedly mounted at the top end of the screw rod (39).
4. The portable air purification device for meeting rooms convenient to use of claim 3, wherein the inner wall of the control groove is provided with a sliding groove, the control column (36) is fixedly provided with a sliding block, and the sliding block is slidably arranged in the sliding groove.
5. The portable air purification device for meeting rooms convenient to use of claim 1, wherein the top of each of the two moving blocks (5) is provided with a threaded hole, the inner wall of the bottom of each of the two moving blocks is provided with an extension groove, the two extension grooves are rotatably provided with a second lead screw (28), and the second lead screw (28) is threadedly mounted in the corresponding threaded hole.
6. The portable air purification device for meeting rooms convenient to use according to claim 5, wherein the two second screw rods (28) are fixedly sleeved with worm gears (29), the same round rod (30) is rotatably installed in the two extending grooves, the two ends of the round rod (30) are fixedly installed with worms (31), the worms (31) are engaged with the corresponding worm gears (29), and the round rod (30) is fixedly sleeved with handles (32).
7. The portable air purification device for meeting room convenient to use of claim 1, wherein the inner wall of the moving groove is provided with a sliding groove, the moving block (5) is fixedly provided with a sliding block, and the sliding block is slidably arranged in the sliding groove.
8. The portable air cleaning apparatus for conference room convenient to use according to claim 1, wherein the centrifugal fan (8) is fixedly connected to the connection frame by bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011275689.0A CN112378031A (en) | 2020-11-13 | 2020-11-13 | Meeting room that facilitates use is with portable air purification device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011275689.0A CN112378031A (en) | 2020-11-13 | 2020-11-13 | Meeting room that facilitates use is with portable air purification device |
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| CN112378031A true CN112378031A (en) | 2021-02-19 |
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| CN202011275689.0A Pending CN112378031A (en) | 2020-11-13 | 2020-11-13 | Meeting room that facilitates use is with portable air purification device |
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| CN112984700A (en) * | 2021-04-06 | 2021-06-18 | 华北理工大学 | Air purification sterilization machine |
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