CN112367009A - High-efficient photovoltaic board power generation equipment outside glass curtain wall - Google Patents

High-efficient photovoltaic board power generation equipment outside glass curtain wall Download PDF

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Publication number
CN112367009A
CN112367009A CN202011248351.6A CN202011248351A CN112367009A CN 112367009 A CN112367009 A CN 112367009A CN 202011248351 A CN202011248351 A CN 202011248351A CN 112367009 A CN112367009 A CN 112367009A
Authority
CN
China
Prior art keywords
cavity
bevel gear
end wall
shaft
driven
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.)
Withdrawn
Application number
CN202011248351.6A
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Chinese (zh)
Inventor
原金恒
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Jiubao Energy Equipment Technology Co ltd
Original Assignee
Qingdao Jiubao Energy Equipment Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qingdao Jiubao Energy Equipment Technology Co ltd filed Critical Qingdao Jiubao Energy Equipment Technology Co ltd
Priority to CN202011248351.6A priority Critical patent/CN112367009A/en
Publication of CN112367009A publication Critical patent/CN112367009A/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • H02S20/20—Supporting structures directly fixed to an immovable object
    • H02S20/22—Supporting structures directly fixed to an immovable object specially adapted for buildings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/88—Curtain walls
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • H02S20/20—Supporting structures directly fixed to an immovable object
    • H02S20/22—Supporting structures directly fixed to an immovable object specially adapted for buildings
    • H02S20/26—Building materials integrated with PV modules, e.g. façade elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
    • 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
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/10—Photovoltaic [PV]
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Load-Bearing And Curtain Walls (AREA)

Abstract

The invention relates to the field of photovoltaic panels, in particular to high-efficiency photovoltaic panel power generation equipment outside a glass curtain wall, which comprises a box body, a roller shutter cavity is arranged in the box body, a belt cavity is arranged in the box body, a roller shutter shaft extending rightwards to the right end wall of the belt cavity is rotatably arranged between the left end wall and the right end wall of the roller shutter cavity, the roller shutter shaft is fixedly provided with a driven belt wheel in the belt cavity, a transmission cavity is arranged in the box body, the invention provides a high-efficiency photovoltaic panel power generation device outside a glass curtain wall, which can realize that a photovoltaic panel device which is rolled up at any time is arranged outside the glass curtain wall, meanwhile, the irradiation angle of the photovoltaic panel can be adjusted to achieve the maximum daylighting rate, and eye light passing through the slit of the roller shutter can enter a room more uniformly through the prism.

Description

High-efficient photovoltaic board power generation equipment outside glass curtain wall
Technical Field
The invention relates to the field of photovoltaic panels, in particular to high-efficiency photovoltaic panel power generation equipment outside a glass curtain wall.
Background
Glass curtain wall often is good because of daylighting, and reasons such as pleasing to the eye are widely used, when sunshine penetrates directly, glass curtain wall also often the temperature is higher, and the daylighting rate is higher, but sunshine often can not get the utilization, and traditional photovoltaic board is put at fixed position through the support, not only occupies an area of big and inefficiency, combines glass curtain wall and photovoltaic board can improve work efficiency when improving the daylighting rate, consequently is necessary to set up the outer high-efficient photovoltaic board power generation equipment of a glass curtain wall and improves above-mentioned problem.
Disclosure of Invention
The invention aims to provide high-efficiency photovoltaic panel power generation equipment outside a glass curtain wall, which can overcome the defects in the prior art, so that the practicability of the equipment is improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to high-efficiency photovoltaic panel power generation equipment outside a glass curtain wall, which comprises a box body, wherein a roller shutter cavity is arranged in the box body, a belt cavity is arranged in the box body, a roller shutter shaft which extends rightwards to the right end wall of the belt cavity is rotatably arranged between the left end wall and the right end wall of the roller shutter cavity, a driven belt wheel is fixedly arranged in the belt cavity by the roller shutter shaft, a transmission cavity is arranged in the box body, a small driven bevel gear shaft which extends rightwards into the transmission cavity is rotatably arranged between the left end wall and the right end wall of the belt cavity, a battery cavity is arranged in the box body, a battery is fixedly arranged in the battery cavity, a motor which is electrically connected with the battery is arranged in the box body, the motor is in power connection with the gear shaft which extends leftwards to the left end wall of the transmission cavity, a transmission device is arranged on the gear shaft, a transmission shaft which, the driving shaft is provided with a driving pinion in the driven pinion cavity, a worm gear cavity is arranged in the box body, the lower end wall of the driven pinion cavity is rotatably provided with a worm shaft extending downwards to the lower end wall of the worm gear cavity, the worm shaft is fixedly provided with a driven pinion meshed with the driving pinion in the driven pinion cavity, the worm shaft is provided with a worm in the worm gear cavity, the roller blind shaft is provided with a roller blind in the roller blind cavity, the roller blind is provided with a plurality of bent plates, the large bevel gear cavity is provided with a plurality of large fixing plates alternately connected with the bent plates, a steering device is arranged in each large fixing plate, the lower end wall of the box body is fixedly provided with a prism light-diffusing plate positioned at the rear side of the large fixing plate, and a plurality of large bevel gear cavities are arranged in the large fixing plates, the bevel gear shaft that extends right to outside the big fixed plate is provided with to rotate between big bevel gear chamber left and right ends wall, the last fixed safety device that is provided with of bevel gear shaft.
Furthermore, the transmission device comprises a spline fixedly arranged on the gear shaft, a large shaft sleeve matched with the spline is arranged on the gear shaft in a sliding manner, a large driven bevel gear is fixedly arranged in the transmission cavity of the transmission shaft, a small driven bevel gear is fixedly arranged in the transmission cavity of the belt cavity, a cylinder is arranged in the box body, the cylinder is in power connection with a push rod extending leftwards into the transmission cavity, a push plate rotatably connected with the large shaft sleeve is fixedly arranged at the tail end of the push rod, and a double-sided bevel gear meshed with the large driven bevel gear and the small driven bevel gear is fixedly arranged on the large shaft sleeve.
Further, turn to the device and include it rotates the chamber to be provided with the photovoltaic board in the big fixed plate, it is provided with downwardly extending to rotate between the upper and lower end wall in photovoltaic board rotation chamber a plurality of driven bull bevel gear axles in the bull bevel gear intracavity, driven bull bevel gear axle is in photovoltaic board rotates the intracavity fixed be provided with the photovoltaic board of battery power connection, driven bull bevel gear axle is in the bull bevel gear intracavity fixed is provided with driven big bevel gear, the bevel gear axle is in the bull bevel gear intracavity fixed be provided with driven big bevel gear's the big bevel gear of initiative that meshes with driven big bevel gear.
Further, the safety device comprises a small fixing plate fixedly arranged on the bevel gear shaft, a sliding block cavity is symmetrically formed in the small fixing plate, a sliding block capable of sliding is arranged in the sliding block cavity, a reset spring is fixedly arranged between the bottom wall of the sliding block and the lower end wall of the sliding block cavity, the tail end of the sliding block slides on the inner wall of the small shaft sleeve, and a worm gear meshed with the worm is fixedly arranged in the worm gear cavity.
The invention has the beneficial effects that: the high-efficiency photovoltaic panel power generation equipment outside the glass curtain wall can realize that the photovoltaic panel equipment which is rolled up at any time is arranged outside the glass curtain wall, the irradiation angle of the photovoltaic panel can be adjusted to achieve the maximum daylighting rate, and simultaneously, eye light passing through a gap of the roller shutter is reflected by the prism to enter a room more uniformly.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of the overall structure of a high-efficiency photovoltaic panel power generation device outside a glass curtain wall according to the invention.
Fig. 2 is a schematic view of the structure a-a in fig. 1.
FIG. 3 is a schematic diagram of B-B in FIG. 1.
Fig. 4 is an enlarged schematic view of C in fig. 1.
Detailed Description
The invention will now be described in detail with reference to fig. 1-4, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
With reference to the accompanying drawings 1-4, the outer high-efficiency photovoltaic panel power generation equipment of glass curtain wall comprises a box body 10, a rolling curtain cavity 49 is arranged in the box body 10, a belt cavity 40 is arranged in the box body 10, a rolling curtain shaft 45 which extends to the right end wall of the belt cavity 40 rightwards is arranged between the left end wall and the right end wall of the rolling curtain cavity 49 in a rotating manner, a driven pulley 43 is fixedly arranged in the belt cavity 40 by the rolling curtain shaft 45, a transmission cavity 30 is arranged in the box body 10, a small driven bevel gear shaft 38 which extends to the right end wall of the transmission cavity 30 is arranged between the left end wall and the right end wall of the belt cavity 40 in a rotating manner, a battery cavity 46 is arranged in the box body 10, a battery 47 is fixedly arranged in the battery cavity 46, a motor 29 which is electrically connected with the battery 47 is arranged in the box body 10, the motor 29 is connected, the gear shaft 35 is provided with a transmission device 101, a driven pinion cavity 26 and a transmission shaft 50 extending leftwards into the driven pinion cavity 26 are arranged in the box body 10 between the left end wall and the right end wall of the transmission cavity 30 in a rotating manner, the transmission shaft 50 is provided with a driving pinion 25 in the driven pinion cavity 26, a worm gear cavity 11 is arranged in the box body 10, a worm shaft 23 extending downwards to the lower end wall of the worm gear cavity 11 is arranged on the lower end wall of the driven pinion cavity 26 in a rotating manner, the worm shaft 23 is fixedly provided with a driven pinion 24 engaged with the driving pinion 25 in the driven pinion cavity 26, the worm shaft 23 is provided with a worm 14 in the worm gear cavity 11, a roller blind 48 is arranged in the roller blind cavity 49 by the roller blind shaft 45, and a plurality of bent plates 16 are arranged on the roller blind 48, the large bevel gear cavity 18 is provided with a plurality of large fixing plates 15 alternately connected with the bending plates 16, a steering device 102 is arranged in the large fixing plate 15, the lower end wall of the box body 10 is fixedly provided with a prism light-diffusing plate 52 positioned at the rear side of the large fixing plate 15, a plurality of large bevel gear cavities 18 are arranged in the large fixing plate 15, bevel gear shafts 55 extending rightwards to the outside of the large fixing plate 15 are rotatably arranged between the left end wall and the right end wall of each large bevel gear cavity 18, and safety devices 103 are fixedly arranged on the bevel gear shafts 55.
Advantageously, the transmission device 101 includes a spline 31 fixedly arranged on the gear shaft 35, a large sleeve 36 slidably arranged on the gear shaft 35 and engaged with the spline 31, a large driven bevel gear 27 fixedly arranged in the transmission cavity 30 of the transmission shaft 50, a small driven bevel gear 37 fixedly arranged in the transmission cavity 30 of the belt cavity 40, a cylinder 32 arranged in the box body 10, a push rod 33 extending leftwards into the transmission cavity 30 and connected with the cylinder 32 in a power manner, a push plate 51 rotatably connected with the large sleeve 36 and fixedly arranged at the end of the push rod 33, and a double-sided bevel gear 39 engaged with the large driven bevel gear 27 and the small driven bevel gear 37 and fixedly arranged on the large sleeve 36.
Beneficially, the steering device 102 includes a photovoltaic panel rotating cavity 22 disposed in the large fixing plate 15, a plurality of driven large bevel gear shafts 20 extending downward into the large bevel gear cavity 18 are rotatably disposed between the upper end wall and the lower end wall of the photovoltaic panel rotating cavity 22, the driven large bevel gear shafts 20 are fixedly disposed in the photovoltaic panel rotating cavity 22 and are electrically connected to the photovoltaic panel 21 of the battery 47, the driven large bevel gear shafts 20 are fixedly disposed in the large bevel gear cavity 18 and are provided with driven large bevel gears 19, and the bevel gear shaft 55 is fixedly disposed in the large bevel gear cavity 18 and is provided with a driving large bevel gear 17 meshed with the driven large bevel gears 19.
Advantageously, the safety device 103 includes a small fixing plate 59 fixedly disposed on the bevel gear shaft 55, a slider cavity 57 symmetrically disposed on the small fixing plate 59, a slidable slider 58 disposed in the slider cavity 57, a return spring 56 fixedly disposed between a bottom wall of the slider 58 and a lower end wall of the slider cavity 57, a distal end of the slider 58 sliding on an inner wall of the small bushing 12, a worm wheel 61 disposed in the small bushing 12, and a worm wheel 13 engaged with the worm 14 and fixedly disposed in the worm gear cavity 11 of the worm wheel 61.
The fixing and connecting method in this embodiment includes, but is not limited to, bolting, welding, and the like.
As shown in fig. 1-4, the sequence of mechanical actions of the entire device of the invention:
when the apparatus is in the initial state, the double-sided bevel gear 39 is not engaged with the small driven bevel gear 37, and the double-sided bevel gear 39 is not engaged with the large driven bevel gear 27.
When the device of the present invention starts to work, in a sunny day, the motor 29 is started to drive the gear shaft 35 to rotate, so as to drive the large shaft sleeve 36 to rotate, the cylinder 32 is started to drive the push rod 33 to move leftwards, so as to drive the push plate 51 to move leftwards, so as to drive the large shaft sleeve 36 to move rightwards, until the double-sided bevel gear 39 is meshed with the small driven bevel gear 37, so as to drive the small driven bevel gear shaft 38 to rotate, so as to drive the driving pulley 41 to rotate, the belt 42 drives the driven pulley 43 to rotate, so as to drive the rolling shutter shaft 45 to rotate, the rolling shutter shaft 45 rotates to lower the rolling shutter 48 downwards, and when the device is put in a proper position, the motor 29 is turned off; the motor 29 is started again to drive the large shaft sleeve 36 to rotate, so as to drive the large shaft sleeve 36 to rotate, the cylinder 32 is started to drive the push rod 33 to move rightwards, so as to drive the push plate 51 to move rightwards, until the double-sided bevel gear 39 is meshed with the large driven bevel gear 27, so as to drive the transmission shaft 50 to rotate, so as to drive the driving pinion 25 to rotate, the driving pinion 25 is meshed with the driven pinion 24, so as to drive the worm shaft 23 to rotate, so as to drive the worm 14 to rotate, the worm 14 is meshed with the worm wheel 13, so as to drive the small shaft sleeve 12 to rotate, so as to drive the bevel gear shaft 55 to rotate, so as to drive the driving large bevel gear 17 to rotate, and the driving large bevel gear 17 is meshed with the driven large bevel gear 19, so as to drive the driven large bevel gear, thereby driving the photovoltaic panel 21 to rotate, controlling the rotation angle of the photovoltaic panel 21 by controlling the motor 29 to rotate forward and backward, and reflecting the sunlight to the photovoltaic panel 21 again by the prism diffusion sheet 52 and scattering the sunlight by the prism diffusion sheet 52.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (4)

1. The utility model provides an outer high-efficient photovoltaic board power generation equipment of glass curtain wall, includes the box, its characterized in that: a roller shutter cavity is arranged in the box body, a belt cavity is arranged in the box body, a roller shutter shaft extending to the right end wall of the belt cavity is rotatably arranged between the left end wall and the right end wall of the roller shutter cavity, a driven belt wheel is fixedly arranged in the belt cavity, a transmission cavity is arranged in the box body, a small driven bevel gear shaft extending to the right end wall of the transmission cavity is rotatably arranged between the left end wall and the right end wall of the belt cavity, a battery cavity is arranged in the box body, a battery is fixedly arranged in the battery cavity, a motor electrically connected with the battery is arranged in the box body, the motor is in power connection with a gear shaft extending to the left end wall of the transmission cavity, a transmission device is arranged on the gear shaft, a transmission shaft extending to the left end wall of the transmission cavity is rotatably arranged between the left end wall and, the driving shaft is provided with a driving pinion in the driven pinion cavity, a worm gear cavity is arranged in the box body, the lower end wall of the driven pinion cavity is rotatably provided with a worm shaft extending downwards to the lower end wall of the worm gear cavity, the worm shaft is fixedly provided with a driven pinion meshed with the driving pinion in the driven pinion cavity, the worm shaft is provided with a worm in the worm gear cavity, the roller blind shaft is provided with a roller blind in the roller blind cavity, the roller blind is provided with a plurality of bent plates, the large bevel gear cavity is provided with a plurality of large fixing plates alternately connected with the bent plates, a steering device is arranged in each large fixing plate, the lower end wall of the box body is fixedly provided with a prism light-diffusing plate positioned at the rear side of the large fixing plate, and a plurality of large bevel gear cavities are arranged in the large fixing plates, the bevel gear shaft that extends right to outside the big fixed plate is provided with to rotate between big bevel gear chamber left and right ends wall, the last fixed safety device that is provided with of bevel gear shaft.
2. A high efficiency photovoltaic panel power plant outside a glass curtain wall as claimed in claim 1 wherein: the transmission device comprises a gear shaft, a spline is fixedly arranged on the gear shaft, a large shaft sleeve matched with the spline is arranged on the gear shaft in a sliding mode, a large driven bevel gear is fixedly arranged in the transmission cavity, a small driven bevel gear is fixedly arranged in the transmission cavity, a cylinder is arranged in the box body, the cylinder is in power connection with a push rod extending leftwards into the transmission cavity, a push plate rotatably connected with the large shaft sleeve is fixedly arranged at the tail end of the push rod, and a double-sided bevel gear meshed with the large driven bevel gear and the small driven bevel gear is fixedly arranged on the large shaft sleeve.
3. A high efficiency photovoltaic panel power plant outside a glass curtain wall as claimed in claim 1 wherein: the steering device comprises a photovoltaic plate rotating cavity arranged in the large fixing plate, a plurality of driven large bevel gear shafts extending downwards into the large bevel gear cavity are arranged between the upper end wall and the lower end wall of the photovoltaic plate rotating cavity in a rotating mode, the driven large bevel gear shafts are fixedly arranged in the photovoltaic plate rotating cavity and are connected with the photovoltaic plate through battery power, the driven large bevel gear shafts are fixedly arranged in the large bevel gear cavity and are provided with driven large bevel gears, and the bevel gear shafts are fixedly arranged in the large bevel gear cavity and are provided with driving large bevel gears meshed with the driven large bevel gears.
4. A high efficiency photovoltaic panel power plant outside a glass curtain wall as claimed in claim 1 wherein: the safety device comprises a small fixing plate fixedly arranged on the bevel gear shaft, a sliding block cavity is symmetrically formed in the small fixing plate, a slidable sliding block is arranged in the sliding block cavity, a reset spring is fixedly arranged between the bottom wall of the sliding block and the lower end wall of the sliding block cavity, the tail end of the sliding block slides on the inner wall of the small shaft sleeve, and the small shaft sleeve is internally provided with a worm gear meshed with a worm fixedly arranged in the worm gear cavity.
CN202011248351.6A 2020-11-10 2020-11-10 High-efficient photovoltaic board power generation equipment outside glass curtain wall Withdrawn CN112367009A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011248351.6A CN112367009A (en) 2020-11-10 2020-11-10 High-efficient photovoltaic board power generation equipment outside glass curtain wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011248351.6A CN112367009A (en) 2020-11-10 2020-11-10 High-efficient photovoltaic board power generation equipment outside glass curtain wall

Publications (1)

Publication Number Publication Date
CN112367009A true CN112367009A (en) 2021-02-12

Family

ID=74509298

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011248351.6A Withdrawn CN112367009A (en) 2020-11-10 2020-11-10 High-efficient photovoltaic board power generation equipment outside glass curtain wall

Country Status (1)

Country Link
CN (1) CN112367009A (en)

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Application publication date: 20210212

WW01 Invention patent application withdrawn after publication