CN109939497A - A kind of portable type air cleaning facility with long service life - Google Patents
A kind of portable type air cleaning facility with long service life Download PDFInfo
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- CN109939497A CN109939497A CN201910121251.8A CN201910121251A CN109939497A CN 109939497 A CN109939497 A CN 109939497A CN 201910121251 A CN201910121251 A CN 201910121251A CN 109939497 A CN109939497 A CN 109939497A
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- main body
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- filter core
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Abstract
The present invention relates to a kind of portable type air cleaning facilities with long service life, including main body and filter core, it further include cleaning mechanism and collecting mechanism, the cleaning mechanism includes driving assembly, elevating lever, cleaning brush, two slide bars and two connecting sleeves, the collecting mechanism includes collecting tank, first dust collecting opening, second dust collecting opening, stop collar, block component and two strainers, the driving component includes motor, first drive rod and the second drive rod, the component that blocks includes baffle, two connecting rods and two springs, in the portable type air cleaning facility with long service life, cleaning brush is gone up and down along slide bar under the action of cleaning mechanism, it is cleaned by side of the cleaning brush to the close air purifier air inlet of filter core, to extend the service life of filter core, the dust of body interior can be collected by collecting mechanism To the inside of collecting tank, to reduce the quantity of air purifier internal dust, the practicability of air purifier is improved.
Description
Technical field
The present invention relates to air cleaning facility field, in particular to a kind of portable type air cleaning with long service life is set
It is standby.
Background technique
Air cleaning facility is the product for referring to filter out or kill air pollutants, effectively improve air cleanliness, mesh
It is preceding to remove based on the household and business air cleaning equipment of room air pollution, air cleaning facility can filter air suspension
The pollutants such as particle, bacterium, virus, fungal spore, pollen, asbestos, radon gas decay constant.
The one kind of air purifier as air cleaning facility, substantially increases people's lives quality, the prior art
Air purifier is after by prolonged use, and accumulation has a large amount of dust on the filter core of air purifier, causes filter core
Reduced service life, so as to shorten the service life of air purifier, moreover, the dust on filtering element for air purifier
The inside of air purifier will be deposited in after falling, since the space inside air purifier is smaller, user is difficult to carry out
It removes, to reduce the practicability of air purifier.
Summary of the invention
The technical problem to be solved by the present invention is for overcome the deficiencies in the prior art, providing a kind of with long service life
Portable type air cleaning facility.
The technical solution adopted by the present invention to solve the technical problems is: a kind of portable type air cleaning with long service life
The inside of main body is arranged in equipment, including main body and filter core, the filter core, further includes cleaning mechanism and collecting mechanism, described clear
The inside of main body is arranged in clean mechanism, and the lower section of main body is arranged in the collecting mechanism；
The cleaning mechanism includes driving assembly, elevating lever, cleaning brush, two slide bars and two connecting sleeves, two cunnings
Bar is separately positioned on the both ends of the side of filter core, and two slide bars are parallel to each other, and two connecting sleeves are respectively sleeved at two slide bars
On, the both ends of the elevating lever are connect with two connecting sleeves respectively, and the elevating lever is vertical with slide bar, the cleaning brush setting
In the side of the close filter core of elevating lever, the cleaning brush is resisted against on filter core, and the inner wall of main body is arranged in the driving component
Side, the driving component be arranged between two slide bars, the driving component is connect with elevating lever；
The collecting mechanism includes collecting tank, the first dust collecting opening, the second dust collecting opening, stop collar, blocks component and two filters
Net, second dust collecting opening are arranged in the side of the separate driving assembly of main body, the collecting tank be arranged in main body close to the
The side of two dust collecting openings, first dust collecting opening are arranged in the side of the close main body of collecting tank, first dust collecting opening and the
Two dust collecting openings are interconnected, and the two sides of the collecting tank are respectively equipped with a blow vent, and two strainers are separately positioned on two and lead to
The inside of port, the component that blocks are covered at the first dust collecting opening, and the close main body of collecting tank is arranged in the stop collar
The inside of stop collar is arranged in one end of side, the close collecting tank of the main body, and the inner wall of the stop collar is resisted against main body
Periphery on.
Preferably, in order to provide power to elevating lever, the driving component includes motor, the first drive rod and the second biography
The side of the inner wall of main body, the fixed company in one end of the drive shaft of the motor and the first drive rod is arranged in lever, the motor
It connects, one end of the other end and the second drive rod of first drive rod is hinged, the other end of second drive rod and lifting
The middle part of bar is hinged.
Preferably, enter the probability of the inside of main body in order to reduce dust from the inside of collecting tank, it is described to block component
Including baffle, two connecting rods and two springs, two connecting rods are separately positioned on the two sides of the first dust collecting opening, two connecting rods
It is arranged at the side of the close main body of the inner wall of collecting tank, two connecting rods are parallel to each other, and the both ends of the baffle are set respectively
There is a through-hole, two connecting rods are each passed through two through-holes, and two springs are respectively sleeved in two connecting rods, the connection
One end of the separate main body of bar is fixedly connected by spring with baffle, and the spring is in compressive state.
Preferably, in order to improve the sealing performance of baffle, the side close to the first dust collecting opening of the baffle is equipped with close
Block is sealed, the baffle is tightly connected by the inner wall of sealing block and collecting tank.
Preferably, in order to improve the stability that main body is connect with collecting tank, the side of the close main body of the collecting tank
Equipped at least two first permanent magnets, the side of the close collecting tank of the main body is equipped at least two second permanent magnets, described
The quantity of first permanent magnet is equal with the quantity of the second permanent magnet, and first permanent magnet and the second permanent magnet correspond, institute
The first permanent magnet is stated to abut each other with the second permanent magnet.
Preferably, in order to improve the accuracy that main body is docked with stop collar, the side of the inner wall of the stop collar is equipped with
The side of locating piece, one end of the close collecting tank of the main body is equipped with a locating slot, and the locating piece is matched with locating slot,
The inside of locating slot is arranged in the locating piece.
Preferably, in order to reduce the probability that baffle falls off from connecting rod, one end of the separate main body of the connecting rod
It is equipped with a limited block.
Preferably, being coated with lubricating grease on the slide bar to improve connecting sleeve mobile smooth degree.
Preferably, in order to improve the sealing performance of filter core Yu main body junction, the periphery of the filter core is equipped with sealing
Circle, the strainer are tightly connected by sealing ring and the inner wall of main body.
Preferably, in order to improve the clean-up effect of filter core, the filter core is active carbon filter core.
The invention has the advantages that in the portable type air cleaning facility with long service life, in the work of cleaning mechanism
Cleaning brush is gone up and down along slide bar under, is carried out by side of the cleaning brush to the close air purifier air inlet of filter core clear
Clean, to extend the service life of filter core, compared with existing cleaning mechanism, the cleaning mechanism is simple in sturcture, ingenious in design, greatly
The practicability of the mechanism is improved greatly, moreover, the dust of body interior can be collected by collecting tank by collecting mechanism
Inside improve the practicability of air purifier to reduce the quantity of air purifier internal dust, with existing collection
Mechanism compares, which it is net to improve air to reduce consumption of the air purifier to electric energy without power drives
Change the energy-efficient performance of device.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the structural schematic diagram of portable type air cleaning facility with long service life of the invention；
Fig. 2 is the structural schematic diagram of the cleaning mechanism of portable type air cleaning facility with long service life of the invention；
Fig. 3 is the structural schematic diagram of the collecting mechanism of portable type air cleaning facility with long service life of the invention；
Fig. 4 is that the main body of portable type air cleaning facility with long service life and the connection structure of stop collar of the invention are shown
It is intended to；
In figure: 1. slide bars, 2. motors, 3. first drive rods, 4. second drive rods, 5. connecting sleeves, 6. elevating levers, 7. is clear
Clean brush, 8. filter cores, 9. stop collars, 10. collecting tanks, 11. strainers, 12. connecting rods, 13. first dust collecting openings, 14. baffles, 15. is close
Envelope block, 16. springs, 17. first permanent magnets, 18. second permanent magnets, 19. second dust collecting openings, 20. main bodys, 21. locating pieces, 22.
Locating slot.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant to the invention.
As shown in Figure 1, a kind of portable type air cleaning facility with long service life, including main body 20 and filter core 8, the filter
The inside of main body 20 is arranged in core 8, further includes cleaning mechanism and collecting mechanism, and the cleaning mechanism is arranged in main body 20
The lower section of main body 20 is arranged in portion, the collecting mechanism；
In fact, being additionally provided with air inlet and air outlet on air purifier, external air enters filter by air inlet
In core 4, air is purified by filter core 4 later, the air after purification is blown out by air outlet, to realize
Purification to air can clean the dust of the side of the close air inlet of filter core 11 by cleaning mechanism, to prolong
The service life of filter core 11 has been grown, while the dust fallen on filter core 11 can be collected by collecting mechanism, to mention
The high clean convenient degree of air purifier, improves the practicability of air purifier；
As shown in Fig. 2, the cleaning mechanism includes driving assembly, elevating lever 6,7, two slide bars 1 of cleaning brush and two companies
Female connector pipe 5, two slide bars 1 are separately positioned on the both ends of the side of filter core 8, and two slide bars 1 are parallel to each other, two connecting sleeves 5
Be respectively sleeved on two slide bars 1, the both ends of the elevating lever 6 are connect with two connecting sleeves 5 respectively, the elevating lever 6 with
Slide bar 1 is vertical, and the side of the close filter core 8 of elevating lever 6 is arranged in the cleaning brush 7, and the cleaning brush 7 is resisted against on filter core 8,
The side of the inner wall of main body 20 is arranged in the driving component, and the driving component is arranged between two slide bars 1, the driving
Component is connect with elevating lever 6；
Under the supporting role of two slide bars 1, the stability of elevating lever 6, Zhi Houtong are improved by two connecting sleeves 5
Component of overdriving provides power, and driving elevating lever 6 is gone up and down along slide bar 1, thus drive cleaning brush 7 to go up and down by elevating lever 6,
During cleaning brush 7 is gone up and down, cleaned by side of the cleaning brush 7 to the close air inlet of filter core 8, to make filter core 8
Cleaning is kept, the service life of filter core 8 is extended；
As shown in figure 3, the collecting mechanism include collecting tank 10, the first dust collecting opening 13, the second dust collecting opening 19, stop collar 9,
Component and two strainers 11 are blocked, the side of the separate driving assembly of main body 20, the receipts are arranged in second dust collecting opening 19
The side close to the second dust collecting opening 19 of main body 20 is arranged in collection slot 10, and leaning on for collecting tank 10 is arranged in first dust collecting opening 13
The side of nearly main body 20, first dust collecting opening 13 and the second dust collecting opening 19 are interconnected, the two sides difference of the collecting tank 10
Equipped with a blow vent, two strainers 11 are separately positioned on the inside of two blow vents, and the component that blocks is covered on the first collection
At dirt mouth 13, the side of the close main body 20 of collecting tank 10, the close collecting tank 10 of the main body 20 is arranged in the stop collar 9
One end the inside of stop collar 9 is set, the inner wall of the stop collar 9 is resisted against on the periphery of main body 20；
During air purifier use, the air-flow a part entered inside main body 20 by air inlet passes through strainer
It is blown out from air outlet after 8, another part is by entering collecting tank 10 after the first dust collecting opening 13 and the second dust collecting opening 19
Inside, while so that the air pressure inside collecting tank 10 is kept balance under the action of venthole, so that air-flow endlessly will
Dust is sent into the inside of collecting tank 10, while under the action of strainer 11, the dust inside collecting tank 10 being made not pass through ventilation
Hole blowout, to realize the cleaning to the dust inside main body 20, improves the practicability of air purifier, while blocking
Under the action of component, the probability that dust returns to the inside of main body 20 inside collecting tank 10 is reduced, so that it is net to improve air
The dust collecting effect for changing device, further improves the practicability of air purifier.
As shown in Fig. 2, the driving component includes motor 2, the first drive rod 3 and the second drive rod 4, the motor 2 is set
It sets in the side of the inner wall of main body 20, the drive shaft of the motor 2 is fixedly connected with one end of the first drive rod 3, and described first
The other end of drive rod 3 and one end of the second drive rod 4 are hinged, the other end of second drive rod 4 and the middle part of elevating lever 6
Hingedly；
The rotation of the first drive rod 3 is driven by motor 2, under the transmission effect of the second drive rod 4, passes through the first drive rod
3 driving elevating levers 6 are moved along slide bar 1.
As shown in figure 3, the component that blocks includes 14, two connecting rods 12 of baffle and two springs 16, two connecting rods
12 are separately positioned on the two sides of the first dust collecting opening 13, and two connecting rods 12 are arranged at the close main body 20 of the inner wall of collecting tank 10
Side, two connecting rods 12 are parallel to each other, and the both ends of the baffle 14 are respectively equipped with a through-hole, and two connecting rods 12 are distinguished
Across two through-holes, two springs 16 are respectively sleeved in two connecting rods 12, and the one of the separate main body 20 of the connecting rod 12
End is fixedly connected by spring 16 with baffle 14, and the spring 16 is in compressive state；
Under the supporting role of two connecting rods 12, improve the stability of baffle 14, at the same allow baffle 14 along
Connecting rod 12 is mobile, when air-flow flows through the first dust collecting opening 13 and the second dust collecting opening 19, pushes 14 edge of baffle by air-flow
Connecting rod 12 it is mobile to the direction far from the first dust collecting opening 13, to make the first dust collecting opening 13 open, later in the work of air-flow
The inside of collecting tank 10 is sent into the lower dust by inside main body 20, when air purifier stops working, air-flow is to gear
The thrust of plate 14 disappears, and drives baffle 14 along connecting rod 12 to the direction close to the first dust collecting opening 13 under the action of the spring 16
It is mobile, to be covered the first dust collecting opening 13 by baffle 14, reduces the dust inside collecting tank 10 and enter inside main body 20
Probability.
Preferably, in order to improve the sealing performance of baffle 14, the side close to the first dust collecting opening 13 of the baffle 14
Equipped with sealing block 15, the baffle 14 is tightly connected by the inner wall of sealing block 15 and collecting tank 10.
Preferably, in order to improve the stability that main body 20 is connect with collecting tank 10, the close main body of the collecting tank 10
20 side is equipped at least two first permanent magnets 17, and the side of close the collecting tank 10 of the main body 20 is equipped at least two the
Two permanent magnets 18, the quantity of first permanent magnet 17 is equal with the quantity of the second permanent magnet 18, first permanent magnet 17 with
Second permanent magnet 18 corresponds, and first permanent magnet 17 is abutted each other with the second permanent magnet 18；
In fact, user can separate collecting tank 10 with main body 20, cleared up inside collecting tank 10 to improve user
The convenient degree of dust improve the stability that main body 20 is connect with collecting tank 10, simultaneously under the position-limiting action of stop collar 9
Under adelphotaxy between the first permanent magnet 17 and the second permanent magnet 18, main body 20 and collecting tank 10 are further improved
The stability of connection.
As shown in figure 4, the side of the inner wall of the stop collar 9 is equipped with locating piece 21, the close collecting tank of the main body 20
The side of 10 one end is equipped with a locating slot 22, and the locating piece 21 is matched with locating slot 22, and the setting of locating piece 21 exists
The inside of locating slot 22；
Under the action of locating piece 21 and locating slot 22, when being directed at locating slot 22 with locating piece 21, user's ability
Main body 20 is inserted into the inside of stop collar 9, to improve the accuracy that main body 20 is docked with collecting tank 10.
Preferably, in order to reduce the probability that baffle 14 falls off from connecting rod 12, the separate main body of the connecting rod 12
20 one end, which is equipped with a limited block, reduces what baffle 14 fell off from connecting rod 12 by the position-limiting action of limited block
Probability.
Preferably, being coated with lubricating grease in order to improve the mobile smooth degree of connecting sleeve 5 on the slide bar 1, passing through lubrication
Rouge reduces the frictional force between connecting sleeve 5 and slide bar 1, to improve the mobile smooth degree of connecting sleeve 5.
Preferably, in order to improve the sealing performance of filter core 8 Yu 20 junction of main body, the periphery of the filter core 8 is equipped with
Sealing ring, the strainer 11 are tightly connected by sealing ring and the inner wall of main body 20, reduce strainer 11 and master by sealing ring
Gap between body 20, so that the probability that gap of the air-flow between strainer 11 and main body 20 is flowed through is reduced, to improve
The sealing performance of filter core 8 and 20 junction of main body.
Preferably, the filter core 8 is active carbon filter core, due to active carbon filter core in order to improve the clean-up effect of filter core 8
There is preferable purifying property to air, to improve the clean-up effect of filter core 8.
Power is provided by driving assembly, drives cleaning brush 7 to go up and down by elevating lever 6, by cleaning brush 7 to filter core 8
Side close to air inlet is cleaned, so that filter core 8 be made to keep cleaning, the service life of filter core 8 is extended, in air cleaning
During device use, the air-flow inside main body 20 is entered by air inlet, will build up the dust of 20 bottom of main body by the
One dust collecting opening 13 and the second dust collecting opening 19 are sent into the inside of collecting tank 10, while under the action of blocking component, reducing dust
The probability that the inside of main body 20 is returned to inside collecting tank 10 improves sky to improve the dust collecting effect of air purifier
The practicability of gas purifier.
Compared with prior art, in the portable type air cleaning facility with long service life, under the action of cleaning mechanism
It goes up and down cleaning brush 7 along slide bar 1, is carried out by side of the cleaning brush 7 to the close air purifier air inlet of filter core 8 clear
Clean, to extend the service life of filter core 8, compared with existing cleaning mechanism, the cleaning mechanism is simple in sturcture, ingenious in design,
The practicability of the mechanism is substantially increased, moreover, can be collected into the dust inside main body 20 by collecting mechanism
The inside of collection slot 10 improves the practicability of air purifier to reduce the quantity of air purifier internal dust, and existing
There is collecting mechanism to compare, which improves without power drives to reduce consumption of the air purifier to electric energy
The energy-efficient performance of air purifier.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (10)
1. a kind of portable type air cleaning facility with long service life, including main body (20) and filter core (8), the filter core (8) set
Set the inside in main body (20), which is characterized in that further include cleaning mechanism and collecting mechanism, the cleaning mechanism is arranged in main body
(20) inside, lower section of the collecting mechanism setting in main body (20)；
The cleaning mechanism includes driving assembly, elevating lever (6), cleaning brush (7), two slide bars (1) and two connecting sleeves
(5), two slide bars (1) are separately positioned on the both ends of the side of filter core (8), and two slide bars (1) are parallel to each other, two connecting sleeves
(5) it is respectively sleeved on two slide bars (1), the both ends of the elevating lever (6) are connect with two connecting sleeves (5) respectively, described
Elevating lever (6) is vertical with slide bar (1), the side of close filter core (8) of cleaning brush (7) setting in elevating lever (6), described clear
Clean brush (7) is resisted against on filter core (8), and the driving component is arranged in the side of the inner wall of main body (20), and the driving component is set
It sets between two slide bars (1), the driving component is connect with elevating lever (6)；
The collecting mechanism includes collecting tank (10), the first dust collecting opening (13), the second dust collecting opening (19), stop collar (9), blocks group
Part and two strainers (11), second dust collecting opening (19) are arranged in the side of the separate driving assembly of main body (20), the receipts
Collect slot (10) setting in the side close to the second dust collecting opening (19) of main body (20), the first dust collecting opening (13) setting is being collected
The side of the close main body (20) of slot (10), first dust collecting opening (13) and the second dust collecting opening (19) are interconnected, the receipts
The two sides of collection slot (10) are respectively equipped with a blow vent, and two strainers (11) are separately positioned on the inside of two blow vents, described
It blocks component to be covered at the first dust collecting opening (13), the close main body (20) of the stop collar (9) setting in collecting tank (10)
Side, one end of the close collecting tank (10) of the main body (20) are arranged in the inside of stop collar (9), the stop collar (9)
Inner wall is resisted against on the periphery of main body (20).
2. portable type air cleaning facility with long service life as described in claim 1, which is characterized in that the driving component
Including motor (2), the first drive rod (3) and the second drive rod (4), the motor (2) setting main body (20) inner wall one
The drive shaft of side, the motor (2) is fixedly connected with one end of the first drive rod (3), the other end of first drive rod (3)
Hinged with one end of the second drive rod (4), the middle part of the other end and elevating lever (6) of second drive rod (4) is hinged.
3. portable type air cleaning facility with long service life as described in claim 1, which is characterized in that described to block component
Including baffle (14), two connecting rods (12) and two springs (16), two connecting rods (12) are separately positioned on the first dust collecting opening
(13) two sides, two connecting rods (12) are arranged at the side of the close main body (20) of the inner wall of collecting tank (10), two companies
Extension bar (12) is parallel to each other, and the both ends of the baffle (14) are respectively equipped with a through-hole, and two connecting rods (12) are each passed through two
A through-hole, two springs (16) are respectively sleeved on two connecting rods (12), the separate main body (20) of the connecting rod (12)
One end is fixedly connected by spring (16) with baffle (14), and the spring (16) is in compressive state.
4. portable type air cleaning facility with long service life as claimed in claim 3, which is characterized in that the baffle (14)
Close to the first dust collecting opening (13) side be equipped with sealing block (15), the baffle (14) pass through sealing block (15) and collecting tank
(10) inner wall is tightly connected.
5. portable type air cleaning facility with long service life as described in claim 1, which is characterized in that the collecting tank
(10) side of close main body (20) is equipped at least two first permanent magnets (17), the close collecting tank of the main body (20)
(10) side is equipped at least two second permanent magnets (18), quantity and the second permanent magnet (18) of first permanent magnet (17)
Quantity it is equal, first permanent magnet (17) and the second permanent magnet (18) correspond, first permanent magnet (17) and the
Two permanent magnets (18) abut each other.
6. portable type air cleaning facility with long service life as described in claim 1, which is characterized in that the stop collar
(9) side of inner wall is equipped with locating piece (21), and the side of one end of the close collecting tank (10) of the main body (20) is equipped with one
A locating slot (22), the locating piece (21) match with locating slot (22), and the locating piece (21) is arranged in locating slot (22)
It is internal.
7. portable type air cleaning facility with long service life as described in claim 1, which is characterized in that the connecting rod
(12) one end of separate main body (20) is equipped with a limited block.
8. portable type air cleaning facility with long service life as described in claim 1, which is characterized in that the slide bar (1)
On be coated with lubricating grease.
9. portable type air cleaning facility with long service life as described in claim 1, which is characterized in that the filter core (8)
Periphery be equipped with sealing ring, the strainer (11) is tightly connected by the inner wall of sealing ring and main body (20).
10. portable type air cleaning facility with long service life as described in claim 1, which is characterized in that the filter core (8)
For active carbon filter core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910121251.8A CN109939497A (en) | 2019-02-19 | 2019-02-19 | A kind of portable type air cleaning facility with long service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910121251.8A CN109939497A (en) | 2019-02-19 | 2019-02-19 | A kind of portable type air cleaning facility with long service life |
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| Publication Number | Publication Date |
|---|---|
| CN109939497A true CN109939497A (en) | 2019-06-28 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910121251.8A Withdrawn CN109939497A (en) | 2019-02-19 | 2019-02-19 | A kind of portable type air cleaning facility with long service life |
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| CN110496463A (en) * | 2019-07-04 | 2019-11-26 | 杨平 | A kind of refuse gasification gas, which is reformed, utilizes equipment |
| CN110671867A (en) * | 2019-09-26 | 2020-01-10 | 齐宽宽 | Refrigeration house with buffering function and good refrigeration effect |
| CN111532107A (en) * | 2020-04-28 | 2020-08-14 | 东莞市存洁科技有限公司 | Air purifier |
| CN111643974A (en) * | 2020-05-13 | 2020-09-11 | 王翠霞 | Convenient type formaldehyde treatment equipment |
| CN113531759A (en) * | 2021-07-29 | 2021-10-22 | 朱志辉 | Environment-friendly sterilizing equipment is used in air purification with dustproof mechanism |
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Application publication date: 20190628 |