CN110030639A - A kind of intelligent air purification device - Google Patents
A kind of intelligent air purification device Download PDFInfo
- Publication number
- CN110030639A CN110030639A CN201810010184.8A CN201810010184A CN110030639A CN 110030639 A CN110030639 A CN 110030639A CN 201810010184 A CN201810010184 A CN 201810010184A CN 110030639 A CN110030639 A CN 110030639A
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- CN
- China
- Prior art keywords
- wall
- fixed
- clean room
- purification device
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
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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
- F24F13/28—Arrangement or mounting of filters
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
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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
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
- F24F8/158—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using active carbon
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/192—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by electrical means, e.g. by applying electrostatic fields or high voltages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/30—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Electrostatic Separation (AREA)
Abstract
The invention discloses a kind of intelligent air purification devices, a kind of intelligent air purification device, including mounting plate, the bottom end side wall of the mounting plate offers groove, and groove inner wall is fixed with sliding rail by rivet, the side walls of sliding rail are connected with hydraulic stem, mounting plate is fixed with display screen by screw close to the side wall of sliding rail, one end of hydraulic stem is fixed with clean room by screw, the inner wall of clean room opens up fluted, and the inner wall of groove is placed with motor, the output end of motor is connected with axle sleeve, and the outer wall of axle sleeve is welded with the second flabellum, axle sleeve slidably connects connecting rod close to the outer wall of the second flabellum, pass through filter chamber, high efficiency particulate air, adsorbing sphere, activated carbon adsorption net, net occurs for anion, the setting of Electrostatic Absorption net and HEPA filter screen, the air for being inhaled into clean room by admission line can be made successively abundant Purification guarantees the pure and fresh property of air after purification, improves the safety of air after purification.
Description
Technical field
The present invention relates to purification technology field more particularly to a kind of intelligent air purification devices.
Background technique
Air purifier is also known as " air cleaner ", air cleaner, clarifier, is to refer to absorption, decompose or convert
Various air pollutants generally comprise finishing pollution, bacterium, anaphylactogen of PM2.5, dust, pollen, peculiar smell, formaldehyde etc etc.,
The household appliances for effectively improving air cleanliness are broadly divided into household, commercialization, industry, building, and existing air purifier is not
It can carry out freely adjusting height acording to the requirement of user, horizontal clarifier can not be also adjusted, reduce purification and set
Standby service performance reduces the efficiency of purification air.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of intelligent air purifying proposed is set
It is standby.
To achieve the goals above, present invention employs following technical solutions:
The bottom end side wall of a kind of intelligent air purification device, including mounting plate, the mounting plate offers groove, and groove inner wall
It is fixed with sliding rail by rivet, the side walls of sliding rail are connected with hydraulic stem, and mounting plate is solid by screw close to the side wall of sliding rail
Surely there is a display screen, one end of hydraulic stem is fixed with clean room by screw, and the inner wall of clean room opens up fluted, and groove is interior
Wall is placed with motor, and the output end of motor is connected with axle sleeve, and the outer wall of axle sleeve is welded with the second flabellum, and axle sleeve is close to the second fan
The outer wall of leaf slidably connects connecting rod, and one end of connecting rod is welded with connecting rod, and one end of connecting rod is fixed with by screw
The both ends of HEPA filter screen, HEPA filter screen are fixed with connecting plate by screw, and connecting plate is fixed with Electrostatic Absorption by screw
Net, in the through-hole that the bottom end side wall that Electrostatic Absorption net is fixed by screws in clean room opens up, and through-hole is close to Electrostatic Absorption net
Sidewall thread be connected with exhaust duct.
Preferably, the clean room opens up fluted close to the inner wall of the second flabellum, and the inside of groove is placed with motor,
The output end of motor is connected with rotary shaft, and one end outer wall of rotary shaft is cased with high efficiency particulate air.
Preferably, the inner wall of the high efficiency particulate air opens up fluted, and the inner wall of groove is connected with fixed link, fixed link
Inside be placed with spring, the threaded one end of spring is connected with motion bar, and the side wall of motion bar opens up fluted, the inner wall of groove
It is connected with rotating bar, the outer wall of rotating bar slidably connects adsorbing sphere.
Preferably, the side walls of the adsorbing sphere are connected with attachment base, and the sidewall weld of attachment base has link block, even
The sidewall thread for connecing block is connected with spring, and the threaded one end of spring is connected with link block, and link block is welded on the side wall of attachment base
, the side walls of attachment base are connected with another adsorbing sphere.
Preferably, the outer wall splicing of the high efficiency particulate air has fixed block, and the side walls hinged of fixed block has folding rod, folding
One end of folded bar is hinged with fixed block, and fixed block splicing has fixed block, and fixed block is glued to the outer wall of rotary shaft.
Preferably, the side wall of the connecting rod opens up fluted, and the inside of groove is placed with motor, and the output of motor
End is connected with axle sleeve, and the outer wall of axle sleeve is welded with the first flabellum.
Preferably, the clean room is fixed with anion generation net, purification by screw close to the inner wall of high efficiency particulate air
Room offers through-hole close to the side wall that anion is netted, and through-hole is interior to be fixed with activated carbon adsorption net by screw, and through-hole is examined for the levels
The sidewall thread of activated carbon adsorption net is connected with admission line.
Preferably, the clean room opens up fluted close to the side wall of hydraulic stem, and the inside of groove is connected with track, rail
The side walls in road are connected with sliding button, and sliding the side walls hinged of button has the first interlocking lever, and one end of the first interlocking lever is fixed with
Baffle, one end side wall of baffle offer through-hole, and swingle is inserted in through-hole, and swingle is fixed on the interior of clean room by rivet
Portion, the outer wall of swingle are hinged with the second interlocking lever, and the outer wall of the second interlocking lever is hinged on the outer wall of sliding button.
Preferably, the display screen is electrically connected with motor, and electrical connection of motor has hydraulic stem, and display screen is wirelessly connected with
Remote controler.
The beneficial effects of the present invention are:
1, net, Electrostatic Absorption net and HEPA are occurred by filter chamber, high efficiency particulate air, adsorbing sphere, activated carbon adsorption net, anion
The setting of filter screen can make the air for being inhaled into clean room by admission line successively sufficiently cleaned up, guarantee air after purification
Pure and fresh property, improve purification after air safety；
2, by high efficiency particulate air, fixed link, adsorbing sphere, spring, motion bar and rotating bar setting, the first flabellum is made to drive gas
Impact is generated to adsorbing sphere, adsorbing sphere is made to slide up and down shuttling movement in rotating bar, is carried out to by the impurity in gas
Adequately absorption, improves the quality of purification；
3, by the setting of clean room, sliding rail and hydraulic stem, can height to clean room and length be adjusted, meet air
The diversity requirements of purification guarantee the air cleaning rate of different location, improve the speed of air cleaning；
4, it by the setting of display screen, can use the direct intelligent control of wireless remote control device cleaning equipment, improve cleaning equipment
Service performance, increase the convenience of cleaning equipment.
Detailed description of the invention
Fig. 1 is a kind of schematic view of the front view of intelligent air purification device proposed by the present invention；
Fig. 2 is a kind of local main view structure figure of intelligent air purification device proposed by the present invention；
Fig. 3 is a kind of partial enlargement structural representation of intelligent air purification device proposed by the present invention.
In figure: 1 mounting plate, 2 sliding rails, 3 hydraulic stems, 4 display screens, 5 motors, 6 clean rooms, 7 rotary shafts, 8 high efficiency particulate airs,
81 adsorbing spheres, 82 fixed links, 83 springs, 84 motion bars, 85 rotating bars, 9 admission lines, 10 activated carbon adsorption nets, 11 anions
Net, 12 connecting plates, 13 connecting rods, 14 exhaust ducts, 15 Electrostatic Absorption nets, 16HEPA filter screen, 17 first flabellums, 18 the occur
Two flabellums.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1-3, a kind of intelligent air purification device is wirelessly connected by remote controler and display screen 4, utilizes remote controler
Display screen 4 is controlled, after starting display screen 4, the motor 5 of electric connection drives the first flabellum 17 and the second flabellum 18 respectively
While start, make the first flabellum 17 by admission line 9 by the air inspiration clean room 6 clean room 6 outside, lead in air
After crossing admission line 9, first passes around activated carbon adsorption net 10 and carry out first adsorption cleaning, be adsorbed the peculiar smell in air, so
Air continues to occur to flow at 11 position of net to anion afterwards, and the pernicious gas in air should be carried out by making negative ions that hair occur
Purification, gas continues to activity at high efficiency particulate air 8 under the absorption of the first flabellum 17 later, and high efficiency particulate air 8 is in 5 He of motor
Horizontal circular movement is done under the drive of rotary shaft 7 and folding rod, while high efficiency particulate air 8 rotates, gas is to adsorbing sphere 81
The impact of generation makes adsorbing sphere 81 slide up and down circular motion along attachment base, makes the gas by high efficiency particulate air 8, simultaneously
Under the suction-operated of high efficiency particulate air 8 and adsorbing sphere 81, it is adsorbed the suspended impurity particle in air, then air flows
When to the lower section of the second flabellum 18, blowing under guiding role for the second flabellum of water flowing 18 makes air flow to HEPA filter screen 16
Position continues through Electrostatic Absorption net 15, and purified air is discharged outside clean room 6 finally by exhaust duct 14, completes
Purification to air can be such that hydraulic stem 3 drives in 6 use process of clean room according to the dirty situation of spatial flow air
Horizontal rectilinear motion does along sliding rail 2 in filter chamber, transfers to the position of filter chamber 6, also the length of adjustable hydraulic stem 3,
The height of filter chamber 6 is adjusted, the purification requirement of different height air is met, guarantees the pure and fresh degree of air after purification.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (9)
1. a kind of intelligent air purification device, including mounting plate (1), which is characterized in that the bottom end side wall of the mounting plate (1) is opened
Equipped with groove, and groove inner wall is fixed with sliding rail (2) by rivet, and the side walls of sliding rail (2) are connected with hydraulic stem (3), peace
Side wall of the loading board (1) close to sliding rail (2) is fixed with display screen (4) by screw, and one end of hydraulic stem (3) is fixed with by screw
Clean room (6), the inner wall of clean room (6) open up fluted, and the inner wall of groove is placed with motor (5), the output end of motor (5)
It is connected with axle sleeve, and the outer wall of axle sleeve is welded with the second flabellum (18), outer wall of the axle sleeve close to the second flabellum (18) is slidably connected
Have connecting rod (13), one end of connecting rod (13) is welded with connecting rod, and one end of connecting rod is fixed with HEPA filter screen by screw
(16), the both ends of HEPA filter screen (16) are fixed with connecting plate (12) by screw, and connecting plate (12) is fixed with quiet by screw
Electro Sorb net (15), in the through-hole that the bottom end side wall that Electrostatic Absorption net (15) is fixed by screws in clean room (6) opens up, and it is logical
Hole is connected with exhaust duct (14) close to the sidewall thread of Electrostatic Absorption net (15).
2. a kind of intelligent air purification device according to claim 1, which is characterized in that the clean room (6) is close to the
The inner wall of two flabellums (18) opens up fluted, and the inside of groove is placed with motor (5), and the output end of motor (5) is connected with rotation
Shaft (7), one end outer wall of rotary shaft (7) are cased with high efficiency particulate air (8).
3. a kind of intelligent air purification device according to claim 2, which is characterized in that the high efficiency particulate air (8)
Inner wall opens up fluted, and the inner wall of groove is connected with fixed link (82), and the inside of fixed link (82) is placed with spring (83), bullet
The threaded one end of spring (83) is connected with motion bar (84), and the side wall of motion bar (84) opens up fluted, and the inner wall of groove is connected with
Rotating bar (85), the outer wall of rotating bar (85) slidably connect adsorbing sphere (81).
4. a kind of intelligent air purification device according to claim 3, which is characterized in that the side wall of the adsorbing sphere (81)
Attachment base is slidably connected, and the sidewall weld of attachment base has link block, the sidewall thread of link block is connected with spring (83), bullet
The threaded one end of spring (83) is connected with link block, and link block is welded on the side wall of attachment base, and the side walls of attachment base are connected with
Another adsorbing sphere (81).
5. a kind of intelligent air purification device according to claim 2, which is characterized in that the high efficiency particulate air (8)
Outer wall splicing has fixed block, and the side walls hinged of fixed block has folding rod, and one end of folding rod is hinged with fixed block, fixed block glue
It is connected to fixed block, fixed block is glued to the outer wall of rotary shaft (7).
6. a kind of intelligent air purification device according to claim 1, which is characterized in that the side wall of the connecting rod (13)
Open up fluted, and the inside of groove is placed with motor (5), and the output end of motor (5) is connected with axle sleeve, the outer wall weldering of axle sleeve
It is connected to the first flabellum (17).
7. a kind of intelligent air purification device according to claim 1, which is characterized in that the clean room (6) is close to high
The inner wall for imitating filter screen (8) is fixed with anion by screw and net (11) occurs, and close to anion net (11) occur for clean room (6)
Side wall offer through-hole, is fixed with activated carbon adsorption net (10) in through-hole by screw, through-hole is examined for the levels activated carbon adsorption net
(10) sidewall thread is connected with admission line (9).
8. a kind of intelligent air purification device according to claim 1, which is characterized in that the clean room (6) is close to liquid
The side wall of compression bar (3) opens up fluted, and the inside of groove is connected with track, and the side walls of track are connected with sliding button, sliding
Dynamic the side walls hinged of button has the first interlocking lever, and one end of the first interlocking lever is fixed with baffle, and one end side wall of baffle offers logical
Hole is inserted with swingle in through-hole, and swingle is fixed on the inside of clean room (6) by rivet, and the outer wall of swingle is hinged with
Two interlocking levers, the outer wall of the second interlocking lever are hinged on the outer wall of sliding button.
9. a kind of intelligent air purification device according to claim 1, which is characterized in that the display screen (4) electrically connects
It is connected to motor (5), motor (5) is electrically connected with hydraulic stem (3), and display screen (4) is wirelessly connected with remote controler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810010184.8A CN110030639A (en) | 2018-01-05 | 2018-01-05 | A kind of intelligent air purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810010184.8A CN110030639A (en) | 2018-01-05 | 2018-01-05 | A kind of intelligent air purification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110030639A true CN110030639A (en) | 2019-07-19 |
Family
ID=67234139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810010184.8A Pending CN110030639A (en) | 2018-01-05 | 2018-01-05 | A kind of intelligent air purification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110030639A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111151071A (en) * | 2019-12-03 | 2020-05-15 | 广东东方一哥新材料股份有限公司 | Movable multi-position adjustable glue spraying workshop air purification device |
| CN112156632A (en) * | 2020-09-28 | 2021-01-01 | 常江 | Intelligent manufacturing medicine midbody exhaust gas purification device's complementary unit |
| CN113639372A (en) * | 2021-07-05 | 2021-11-12 | 朱云峰 | Negative ion air purifier |
| CN114704130A (en) * | 2022-03-29 | 2022-07-05 | 重庆市人民医院 | Open epidemic situation isolation prevention and control device of three routes circulation for gynaecology's delivery room |
-
2018
- 2018-01-05 CN CN201810010184.8A patent/CN110030639A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111151071A (en) * | 2019-12-03 | 2020-05-15 | 广东东方一哥新材料股份有限公司 | Movable multi-position adjustable glue spraying workshop air purification device |
| CN112156632A (en) * | 2020-09-28 | 2021-01-01 | 常江 | Intelligent manufacturing medicine midbody exhaust gas purification device's complementary unit |
| CN113639372A (en) * | 2021-07-05 | 2021-11-12 | 朱云峰 | Negative ion air purifier |
| CN113639372B (en) * | 2021-07-05 | 2022-11-22 | 江西省源古宝健康管理有限公司 | Negative ion air purifier |
| CN114704130A (en) * | 2022-03-29 | 2022-07-05 | 重庆市人民医院 | Open epidemic situation isolation prevention and control device of three routes circulation for gynaecology's delivery room |
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Application publication date: 20190719 |