CN205536229U - Force clean filtration system for indoor environment - Google Patents
Force clean filtration system for indoor environment Download PDFInfo
- Publication number
- CN205536229U CN205536229U CN201620260197.7U CN201620260197U CN205536229U CN 205536229 U CN205536229 U CN 205536229U CN 201620260197 U CN201620260197 U CN 201620260197U CN 205536229 U CN205536229 U CN 205536229U
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- Prior art keywords
- filter
- indoor environment
- shell
- filtration system
- clean air
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Air Conditioning Control Device (AREA)
- Ventilation (AREA)
Abstract
The utility model discloses a force clean filtration system for indoor environment, it is including filtering the tube, the intelligent control ware, filter the embedded dress filtering component of tube through -hole of tube, outside filtering component includes, inboard filter, outside filter includes that the outside fixes the frame, the filter core is crossed in the outside, inboard filter is including inboard fixed frame, the inboard filter core of crossing, in the tube through -hole outside in, inlay dress fan mount between the inboard filter, the spiral shell is adorned and is installed the drive flabellum in the driving motor's of fan mount power output shaft, outside filtration in -core portion inlays and adorns a dust concentration sensor, and inboard filtration in -core portion inlays and adorns the 2nd dust concentration sensor, air matter level sensor, air current level sensor, the intelligent control ware includes controller casing, microprocessor controller, and display screen, control button are installed to controller casing surface. The utility model discloses can improve indoor air quality effectively to guarantee human the breathing healthily, structural design is novel, air purification is effectual.
Description
Technical field
This utility model relates to air filter technical field, particularly relates to a kind of pressure being applied to indoor environment clear
Clean air filtering system.
Background technology
Along with people's living standard constantly improves, the healthy degree of concern of self is the most constantly improved by people；
Along with industrialization constantly progress, environmental pollution becomes the emphasis of social concerns, especially in urban life, and haze powder
Dustiness dye is particularly acute.
For the health that ensures respiration, the air purifier product of existence form various kinds in prior art；But, for existing
For air purifier, it can only carry out air cleaning process to indoor regional area, and scope is the biggest, air purification effect
Inconspicuous.
It addition, there is also the air cleaner of a kind of ventilation fan structure in prior art, it is mainly by by indoor
The mode that air is discharged reaches the purpose of air cleaning；But, during being discharged by room air, the interior space can shape
Becoming a relatively low subnormal ambient, outdoor air can enter in indoor by spaces such as crack between a door and its frames, the powder entrained by outdoor air
Dirt also can enter in indoor environment in the lump, does not substantially reach the purpose of indoor air purification.
Utility model content
The purpose of this utility model is to provide a kind of pressure being applied to indoor environment for the deficiencies in the prior art
Clean air filtration system, this be applied to indoor environment pressure clean air filtration system novel in structural design and can be effective
Ground improves IAQ (indoor air quality), to ensure human body respiratory health.
For reaching above-mentioned purpose, this utility model is achieved through the following technical solutions.
A kind of pressure clean air filtration system being applied to indoor environment, this is applied to the pressure cleaning sky of indoor environment
Gas filtration system is installed in the filtration channel of indoor wall, and with outdoor in this filtration channel communication chamber, this filtration channel is offered
In body of wall position or window position, this pressure clean air filtration system being applied to indoor environment includes and is flush-mounted in filtration
Filtration shell in passage, filter the inside of shell offer completely through and communication chamber in outdoor shell through hole, shell
Filter assemblies it is embedded with in through hole；
Filter assemblies includes outer filter, inner side filter, and outer filter is positioned at the outer side of inner side filter
And outer filter and inner side filter interval arrange, outer filter includes outside fixed frame and to be installed in outside fixing
The outside filtration core of frame, inner side filter includes inner side fixed frame and is installed in the inner side filtration core of inner side fixed frame, pipe
Being embedded with fan Fixture between outer filter and inner side filter in shell through hole, fan Fixture is screwed on shell through hole
Inwall, the centre position of fan Fixture is screwed with driving motor, drives the power output shaft of motor to be equiped with driving flabellum；
The inside of outside filtration core is embedded with the first sensor of dust concentration, and the inside of inner side filtration core is embedded with the second powder
Dust concentration sensor, air mass sensor and air flow sensor；
This pressure clean air filtration system being applied to indoor environment is fitted with intelligent controller, and intelligent controller includes
The microprocessor controller in having controller housing and being flush-mounted in controller housing and electrically connected with external power source, controller housing
Outer surface be equiped with display screen, control knob, drive motor, the first sensor of dust concentration, the second sensor of dust concentration,
Air mass sensor, air flow sensor, display screen and control knob electrically connect with microprocessor controller respectively.
Wherein, this pressure clean air filtration system being applied to indoor environment also includes for monitoring in indoor environment
The 3rd sensor of dust concentration of dust concentration signal, the 3rd sensor of dust concentration is electrically connected with described microprocessor controller
Connect.
Wherein, the outer surface of described controller housing is equiped with LED light, LED light and described micro-processing controls
Device electrically connects.
Wherein, described microprocessor controller is fitted with wireless communication module, wireless communication module and described micro-processing controls
Device electrically connects.
Wherein, described wireless communication module is wireless WIFI communication module.
Wherein, described wireless communication module is wireless blue tooth communication module.
Wherein, described wireless communication module is wireless GPRS communication module.
Wherein, the opening direction of the air inlet 111 of described shell through hole down, is installed at the air outlet 112 of shell through hole
There is wind deflector.
Wherein, it is embedded with between described inner side filter and described driving flabellum and described micro-place in described shell through hole
The electric heater of reason controller electrical connection.
Wherein, it is embedded with between described inner side filter and described driving flabellum and described micro-place in described shell through hole
The refrigerator of reason controller electrical connection.
The beneficial effects of the utility model are: a kind of pressure cleaning sky being applied to indoor environment described in the utility model
Gas filtration system, it includes the filtration shell being flush-mounted in filtration channel, filters setting-in filtration in the shell through hole within shell
Assembly；Filter assemblies includes outer, inner side filter, and outer filter includes outside fixed frame, outside filtration core, inner side filter
Including inner side fixed frame, inner side filtration core, being embedded in fan Fixture in shell through hole between outer, inner side filter, fan is solid
Determine frame centre position spiral shell dress and drive motor, drive the power output shaft installing of motor to drive flabellum；The internal setting-in of outside filtration core
First sensor of dust concentration, inner side filtration core internal setting-in the second sensor of dust concentration, air mass sensor, air stream
Quantity sensor；This pressure clean air filtration system being applied to indoor environment is equipped with intelligent controller, and intelligent controller includes
Controller housing, microprocessor controller, controller housing outer surface installing display screen, control knob.Designed by said structure,
This utility model can improve IAQ (indoor air quality) effectively, to ensure that human body respiratory health, i.e. this utility model have structure
Novel in design, the advantage of good air purification effect.
Accompanying drawing explanation
Below with accompanying drawing, this utility model is further detailed, but the embodiment in accompanying drawing do not constitute right
Any restriction of the present utility model.
Fig. 1 is structural representation of the present utility model.
Include in FIG:
1 filters shell 11 shell through hole
111 air inlet 111 112 air outlets 112
2 filter assemblies 21 outer filter
Filtration core outside fixed frame 212 outside 211
Fixed frame inside filter 221 inside 22
Filtration core 231 fan Fixture inside 222
232 drive motor 233 to drive flabellum
31 first sensor of dust concentration 32 second sensor of dust concentration
33 air mass sensor 34 air flow sensor
4 intelligent controller 41 controller housings
42 display screen 43 control knobs
44 LED light 5 wind deflectors
6 electric heater 7 refrigerators.
Detailed description of the invention
Below in conjunction with specific embodiment, this utility model is illustrated.
As it is shown in figure 1, a kind of pressure clean air filtration system being applied to indoor environment, this is applied to indoor environment
Clean air filtration system is forced to be installed in the filtration channel of indoor wall, with outdoor in this filtration channel communication chamber, this mistake
Filter passage is opened in body of wall position or window position, and this pressure clean air filtration system being applied to indoor environment includes
The filtration shell 1 being flush-mounted in filtration channel, filter the inside of shell 1 offer completely through and communication chamber in outdoor pipe
Shell through hole 11, is embedded with filter assemblies 2 in shell through hole 11.
Further, filter assemblies 2 includes outer filter 21, inner side filter 22, and outer filter 21 is positioned at
The outer side of side filter 22 and outer filter 21 and inner side filter 22 interval are arranged, outer filter 21 includes outside
Fixed frame 211 and be installed in outside fixed frame 211 outside filtration core 212, inner side filter 22 include inner side fixed frame
221 and be installed in the inner side filtration core 222 of inner side fixed frame 221, in outer filter 21 and inner side mistake in shell through hole 11
Being embedded with fan Fixture 231 between filter 22, fan Fixture 231 is screwed on shell through hole 11 inwall, fan Fixture 231
Centre position be screwed with driving motor 232, drive motor 232 power output shaft be equiped with driving flabellum 233.
Further, the inside of outside filtration core 212 is embedded with the first sensor of dust concentration 31, inner side filtration core
The inside of 222 is embedded with the second sensor of dust concentration 32, air mass sensor 33 and air flow sensor 34.
It addition, this pressure clean air filtration system being applied to indoor environment is fitted with intelligent controller 4, Based Intelligent Control
The micro-processing controls in device 4 includes controller housing 41 and is flush-mounted in controller housing 41 and electrically connected with external power source
Device, the outer surface of controller housing 41 is equiped with display screen 42, control knob 43, drives motor the 232, first dust concentration sensing
Device the 31, second sensor of dust concentration 32, air mass sensor 33, air flow sensor 34, display screen 42 and control
Button 43 electrically connects with microprocessor controller respectively.
Need to be explained further, during inner side of the present utility model filter 22, outer filter 21 are installed, outside
The outside fixed frame 211 of filter 21 can be fixed on the inwall of shell through hole 11 by lock screw spiral shell dress, it is also possible to by lock
Tight screw spiral shell dress is fixed on fan Fixture 231；The inner side fixed frame 221 of inner side filter 22 can be solid by lock screw spiral shell dress
Inwall due to shell through hole 11；Certainly, above-mentioned inner side filter 22, the fixed installation mode of outer filter 21 are not intended that
To restriction of the present utility model, outside the most of the present utility model fixed frame 211, inner side fixed frame 221 can also use other
Mode carries out installing fixes.It addition, the shape of outer filter 21, inner side filter 22 is not limited by this utility model
System, outer filter 21, inner side filter 22 that i.e. this practicality is thought can be designed to plate-like structure, naturally it is also possible to be designed to
Cylinder-like structure.
Below in conjunction with air purification process this utility model is described in detail, particularly as follows: user passes through
Controller starts driving motor 232, drives the power output shaft of motor 232 to drive and drives flabellum 233 to rotate, is driving flabellum
Under the driving effect of 233, outdoor air enters to indoor via outside filtration core 212, inner side filtration core 222 successively, outside
Filtration core 212, inner side filtration core 222 can carry out double filtration process to by the air of shell through hole 11, and then effectively
Dust granules in air is filtered；Clean air after filtering enters to indoor, and now, the interior space can produce a high pressure
The air pressure of environment and indoor environment is big the air pressure of outdoor environment, and under the effect of this pressure differential, room air can be via door
The gap of seam and discharge, and then the dust granules in room air is also taken out of, to reach the purpose purified the air of a room.
Need to be explained further, inner side filtration core 222, outside filtration core 212 can respectively dehumidify moistureproof filtration core, dehumidifying
Moistureproof filtration core has the advantage that filtering accuracy is high, and then improves dust-filtering effect further.Certainly, above-mentioned filtration core
Material is not intended that inner side the most of the present utility model filtration core 222, outside filtration core 212 are all right to restriction of the present utility model
The filtration being prepared from for other material.
It should further be noted that during utility model works, outside the first sensor of dust concentration 31 Real-time Collection
Dust concentration signal is also fed back to microprocessor controller by the dust concentration signal of filtration core 212 in real time, and the second dust concentration passes
Inside sensor 32 Real-time Collection, dust concentration signal is also fed back to micro-processing controls by the dust concentration signal of filtration core 222 in real time
Device, air mass sensor 33 Real-time Collection enters to the mass parameter of the air of indoor and in real time by institute via shell through hole 11
The mass parameter gathered feeds back to microprocessor controller, air flow sensor 34 Real-time Collection flow by shell through hole 11
Data on flows is also fed back to microprocessor controller by data in real time, and microprocessor controller passes through display screen 42 by above-mentioned signal data
Show intuitively, and the obtained air quality data of air mass sensor 33 can facilitate user understanding to enter to room
The quality condition of interior air；The Dust Capacity accumulated when outside filtration core 212, inner side filtration core 222 reaches micro-processing controls
During upper limit threshold values set by device, microprocessor controller controls to drive motor 232 to invert, and i.e. comes outside by the way of blowback
Filtration core 212, inner side filtration core 222 carry out automatic maintenance clean；When the obtained flow value of air flow sensor 34 is less than micro-
During lower limit threshold values set by processing controller, then it represents that outside filtration core 212, inner side filtration core 222 block seriously, i.e. need
Change filtration core 212, inner side filtration core 222 outside safeguarding immediately.
It addition, for indoor environment, when door and window is turned off tight, the time one is long, and indoor environment there will be air
Muddy and give a kind of comparison of people vexed sensation；For this utility model, it connects by filtering the shell through hole 11 of shell 1
Outdoor and indoor, even if indoor environment is in the state that door and window closes, indoor and outdoor also can carry out air exchange, to ensure room
The air cleaner of interior environment.
Summary situation understands, and is designed by said structure, and this utility model can improve Interior Space makings effectively
Amount, to ensure the advantage that human body respiratory health, i.e. this utility model have novel in structural design, good air purification effect.
As preferred embodiment, this pressure clean air filtration system being applied to indoor environment also include for
3rd sensor of dust concentration (not shown) of the dust concentration signal in monitoring indoor environment, the 3rd dust concentration sensing
Device electrically connects with microprocessor controller.This utility model can use two kinds of mode of operations, i.e. automatic operation mode and artificial
Control mode of operation；For Artificial Control mode of operation, user can be pressed by the control of controller housing 41 outer surface
Button 43 is controlled；For automatic operation mode, when the 3rd sensor of dust concentration obtained dust concentration value exceedes
During lower limit threshold values set by microprocessor controller, microprocessor controller automatically controls driving motor 232 and starts, so realize from
Dynamic control.
As preferred embodiment, as it is shown in figure 1, the outer surface of controller housing 41 is equiped with LED light 44,
LED light 44 electrically connects with microprocessor controller.During utility model works, when the dust concentration value of indoor environment
When reaching the appropriate threshold set by microprocessor controller, LED light 44 lights green light, then it represents that indoor air clean；When
When LED light 44 flashes the redlight, then it represents that room air dust content is high.
As preferred embodiment, microprocessor controller is fitted with wireless communication module, wireless communication module and Wei Chu
Reason controller electrical connection.Wherein, wireless communication module of the present utility model can use wireless WIFI, wireless blue tooth or wireless
GPRS mode realizes wireless telecommunications, and wireless communication module the most of the present utility model can be wireless WIFI communication module, wireless
Bluetooth communication module, wireless GPRS communication module；Certainly, above-mentioned wireless communication mode constituting restriction of the present utility model.
Need to be explained further, microprocessor controller can carry out coupling by wireless communication module with the smart mobile phone of user and dock, phase
Answering, smart mobile phone is provided with APP control program, i.e. user can realize remote wireless control, intelligence by APP control program
Degree can be changed high.
As preferred embodiment, as it is shown in figure 1, the opening direction of the air inlet 111 of shell through hole 11 is down, shell
It is equiped with wind deflector 5 at the air outlet 112 of through hole 11；Need to be explained further, as it is shown in figure 1, the air inlet 111 of shell through hole 11
Can be opened in the lower surface filtering shell 1 outer end, i.e. the opening direction of the air inlet 111 of shell through hole 11 is down, this structure
Design air inlet 111 design have the advantage that be effectively prevented from rainwater enter to via air inlet 111 shell lead to
In hole 11, and then reach waterproof purpose.For being installed on the wind deflector 5 at air outlet 112, it can carry out air-out and draw
The effect led, and then guide air-flow in indoor moveable.It addition, lead to for avoiding the bulky grain foreign material such as leaves, shredded paper to enter to shell
In hole 11, this utility model can install corresponding filtration filter structure in air inlet.
As preferred embodiment, as it is shown in figure 1, in inner side filter 22 and driving flabellum 233 in shell through hole 11
Between be embedded with the electric heater 6 electrically connected with microprocessor controller.In the environment of winter cold, user can be by intelligence
Controller 4 starts electric heater 6, produces heat after electric heater 6 energising, and heat produced by electric heater 6 diffuses to pipe
In the air-flow of shell through hole 11 and along with said flow enters in indoor environment, and then realize indoor environment is carried out heat temperature raising
Effect, beneficially winter is warming.
As preferred embodiment, as it is shown in figure 1, in inner side filter 22 and driving flabellum 233 in shell through hole 11
Between be embedded with the refrigerator 7 electrically connected with microprocessor controller.In the environment of sweltering heat in summer, user can be controlled by intelligence
Device 4 processed starts refrigerator 7, produces cold, and cold produced by refrigerator 7 diffuses to shell through hole 11 after refrigerator 7 energising
Air-flow in and along with said flow enters in indoor environment, and then realize effect that indoor environment is lowered the temperature, favorably
In preventing heatstroke in summer.
Above content is only preferred embodiment of the present utility model, for those of ordinary skill in the art, according to this reality
By novel thought, the most all will change, this specification content should not be construed as
To restriction of the present utility model.
Claims (10)
1. being applied to a pressure clean air filtration system for indoor environment, this is applied to the pressure clean air of indoor environment
Filtration system is installed in the filtration channel of indoor wall, and with outdoor in this filtration channel communication chamber, this filtration channel is opened in
Body of wall position or window position, it is characterised in that: this pressure clean air filtration system being applied to indoor environment includes
The filtration shell (1) being flush-mounted in filtration channel, filter shell (1) inside offer completely through and communication chamber in outdoor
Shell through hole (11), be embedded with filter assemblies (2) in shell through hole (11)；
Filter assemblies (2) includes outer filter (21), inner side filter (22), and outer filter (21) is positioned at inner side and filters
The outer side of device (22) and outer filter (21) and inner side filter (22) interval are arranged, outside outer filter (21) includes
Side fixed frame (211) and be installed in outside fixed frame (211) outside filtration core (212), inner side filter (22) includes
Inner side fixed frame (221) and be installed in the inner side filtration core (222) of inner side fixed frame (221), in outward in shell through hole (11)
Being embedded with fan Fixture (231) between side filter (21) and inner side filter (22), fan Fixture (231) is screwed on pipe
Shell through hole (11) inwall, the centre position of fan Fixture (231) is screwed with driving motor (232), drives the dynamic of motor (232)
Power output shaft is equiped with driving flabellum (233)；
The inside in outside filtration core (212) is embedded with the first sensor of dust concentration (31), and the inside of inner side filtration core (222) is embedding
Equipped with the second sensor of dust concentration (32), air mass sensor (33) and air flow sensor (34)；
This pressure clean air filtration system being applied to indoor environment is fitted with intelligent controller (4), and intelligent controller (4) wraps
The microprocessor controller in including controller housing (41) and being flush-mounted in controller housing (41) and electrically connected with external power source,
The outer surface of controller housing (41) is equiped with display screen (42), control knob (43), drives motor (232), the first dust dense
Spend sensor (31), the second sensor of dust concentration (32), air mass sensor (33), air flow sensor (34), show
Display screen (42) and control knob (43) electrically connect with microprocessor controller respectively.
A kind of pressure clean air filtration system being applied to indoor environment the most according to claim 1, it is characterised in that:
Also include the 3rd sensor of dust concentration for monitoring the dust concentration signal in indoor environment, the 3rd dust concentration sensing
Device electrically connects with described microprocessor controller.
A kind of pressure clean air filtration system being applied to indoor environment the most according to claim 2, it is characterised in that:
The outer surface of described controller housing (41) is equiped with LED light (44), LED light (44) and described microprocessor controller
Electrical connection.
A kind of pressure clean air filtration system being applied to indoor environment the most according to claim 3, it is characterised in that:
Described microprocessor controller is fitted with wireless communication module, and wireless communication module electrically connects with described microprocessor controller.
A kind of pressure clean air filtration system being applied to indoor environment the most according to claim 4, it is characterised in that:
Described wireless communication module is wireless WIFI communication module.
A kind of pressure clean air filtration system being applied to indoor environment the most according to claim 4, it is characterised in that:
Described wireless communication module is wireless blue tooth communication module.
A kind of pressure clean air filtration system being applied to indoor environment the most according to claim 4, it is characterised in that:
Described wireless communication module is wireless GPRS communication module.
A kind of pressure clean air filtration system being applied to indoor environment the most according to claim 1, it is characterised in that:
The opening direction of the air inlet 111 of described shell through hole (11) down, is equiped with wind-guiding at the air outlet 112 of shell through hole (11)
Plate (5).
A kind of pressure clean air filtration system being applied to indoor environment the most according to claim 1, it is characterised in that:
It is embedded with between described inner side filter (22) and described driving flabellum (233) and described micro-place in described shell through hole (11)
The electric heater (6) of reason controller electrical connection.
A kind of pressure clean air filtration system being applied to indoor environment the most according to claim 1, its feature exists
In: it is embedded with described between described inner side filter (22) and described driving flabellum (233) in described shell through hole (11)
The refrigerator (7) of microprocessor controller electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620260197.7U CN205536229U (en) | 2016-03-31 | 2016-03-31 | Force clean filtration system for indoor environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620260197.7U CN205536229U (en) | 2016-03-31 | 2016-03-31 | Force clean filtration system for indoor environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205536229U true CN205536229U (en) | 2016-08-31 |
Family
ID=56785897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620260197.7U Active CN205536229U (en) | 2016-03-31 | 2016-03-31 | Force clean filtration system for indoor environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205536229U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105757815A (en) * | 2016-03-31 | 2016-07-13 | 吴焕雄 | Forced cleaning type air filtering system applied to indoor environments |
| CN107339765A (en) * | 2017-02-18 | 2017-11-10 | 深圳市玖品空气净化科技有限公司 | A kind of multifunctional air purifying equipment easy to maintain |
-
2016
- 2016-03-31 CN CN201620260197.7U patent/CN205536229U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105757815A (en) * | 2016-03-31 | 2016-07-13 | 吴焕雄 | Forced cleaning type air filtering system applied to indoor environments |
| CN107339765A (en) * | 2017-02-18 | 2017-11-10 | 深圳市玖品空气净化科技有限公司 | A kind of multifunctional air purifying equipment easy to maintain |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200619 Address after: 523808 room 808, building 1, No. 20, headquarters Third Road, Songshanhu Park, Dongguan City, Guangdong Province Patentee after: Guangdong Dedao New Energy Technology Co., Ltd Address before: 523000 Guangdong province Dongguan Dongkeng jute ridge Phoenix Avenue Qinsheng industrial city Patentee before: Wu Huanxiong |