CN106953587A - A kind of building external solar energy photovoltaic panel shading system - Google Patents
A kind of building external solar energy photovoltaic panel shading system Download PDFInfo
- Publication number
- CN106953587A CN106953587A CN201710297396.4A CN201710297396A CN106953587A CN 106953587 A CN106953587 A CN 106953587A CN 201710297396 A CN201710297396 A CN 201710297396A CN 106953587 A CN106953587 A CN 106953587A
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- photovoltaic
- solar energy
- building
- photovoltaic panel
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 238000010276 construction Methods 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims description 10
- 230000000151 anti-reflux effect Effects 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 4
- 239000000565 sealant Substances 0.000 claims description 4
- 238000012806 monitoring device Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 230000008859 change Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000003203 everyday effect Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- 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
- H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
-
- H02J3/383—
-
- 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
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
-
- 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
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a kind of solar energy photovoltaic panel shading system for building external, including supporting construction, photovoltaic sun plate, transmission mechanism, control system and photovoltaic generating system；Supporting construction includes section bar and steel structure frame, and photovoltaic sun plate is fixed on section bar, and the axle sleeve being respectively fixed at two ends with anti-drive end cover and Driving terminal, Driving terminal of section bar is connected on the connecting bolt of bearing, and bearing is fixed with steel structure frame；The axle sleeve that transmission mechanism is included on pull bar and drive disk, pull bar is hinged by axle sleeve connecting rod and Driving terminal, and drive disk one end is fixedly connected with pull bar；Control system includes motor, speed changer and push rod, and motor is connected by speed changer driving push rod, push rod with the drive disk other end；Photovoltaic generating system is electrically connected with being arranged on the terminal box that anti-drive end is covered.The photovoltaic sun blade plays sunshade effect both as architectural shading component, and carrying again is integrated with photovoltaic cell, output power.
Description
【Technical field】
The invention belongs to architectural design field, and in particular to a kind of solar energy photovoltaic panel sunshade system for building external
System.
【Background technology】
In the world today, energy-conservation has become themes of the times, and China's building energy consumption account for the 27.8% of whole society's total energy consumption
More than, exterior window ranks first as the most weak link of energy-conservation in architectural exterior-protecting construction, energy consumption row.Therefore architectural shading has become
The hot issue of current building energy saving field.In addition, solar energy is used as a kind of renewable and clean energy resource, extensive use.It is existing
Some Building Outside Shading of Window products, sunshading board structure whether fix or adjustable, all simply only meet sunshade requirement, but
It can not effectively be combined with solar energy photovoltaic panel, reach and not only meet sunshade requirement but also can collect the effect of solar power generation.
【The content of the invention】
It is an object of the invention to solve above-mentioned existing energy consumption problem, there is provided a kind of sun for building external with deficiency
Energy photovoltaic panel shading system, described photovoltaic sun blade plays sunshade effect both as architectural shading component, carries integrated again
Photovoltaic cell, output power.It can change automatic according to the sun irradiation angle and outdoor light intensity of different time sections every day
Adjustment angle.
In order to realize above-mentioned task, the present invention uses following technical measures：
A kind of solar energy photovoltaic panel shading system for building external, including supporting construction, photovoltaic sun plate, driver
Structure, control system and photovoltaic generating system；Described supporting construction includes section bar and steel structure frame, and photovoltaic sun plate is fixed on
On section bar, the axle sleeve being respectively fixed at two ends with anti-drive end cover and Driving terminal, Driving terminal of section bar is connected on the company of bearing
On connecting bolt, bearing is fixed with steel structure frame；The axle sleeve that described transmission mechanism is included on pull bar and drive disk, pull bar passes through
Axle sleeve connecting rod is hinged with Driving terminal, and drive disk one end is fixedly connected with pull bar；Described control system includes motor, speed change
Device and push rod, motor are connected by speed changer driving push rod, push rod with the drive disk other end；Described photovoltaic generating system is with setting
Put the terminal box electrical connection covered in anti-drive end.
Drive tab is provided with described section bar, axle one end is connected with the axle lock in drive tab.
Described photovoltaic sun plate is connected by fluid sealant with section bar.
Described solar energy photovoltaic panel shading system is fixed on building south orientation and west on window by steel structure frame.
Described photovoltaic generating system is accessed by combining inverter in the AC power distribution cabinet/AC distribution panel of building, for building
Interior offer electric energy.
Described combining inverter is also accessed in the AC power distribution cabinet/AC distribution panel of building by Anti-reflux controller, anti-reverse flow control
Device and the voltage of grid side, current monitoring device are connected.
Also include automatic control system, automatic control system includes temperature and luminance sensor and PLC；Described
Motor is connected by motor controller controls, described temperature and luminance sensor, electric machine controller with PLC.
Invention compared with prior art, with advantages below：
The present invention includes supporting construction and sunshading board, motor and transmission mechanism, control system, photovoltaic generating system.Photovoltaic
Sunshade blade plays sunshade effect both as architectural shading component, and carrying again is integrated with photovoltaic cell, output power.While by
To the driving of motor and transmission mechanism, sunshading board angle can be adjusted and change, can be according to different time sections every day
Sun irradiation angle and outdoor light intensity change adjust automatically angle.The electric energy produced by its photovoltaic cell fills to battery simultaneously
Electricity, is that motor, single-chip microcomputer or other DC equipments are powered, alternating current used in everyday can be also converted into through inverter.
Further, the external light sensor of single-chip microcomputer and clock chip, the outdoor light intensity change of light sensor test, is single
Piece machine provides light intensity signal input, and clock chip generation time signal is read for single-chip microcomputer.When outdoor light is stronger, monolithic
Machine-readable to take current time, the time with storage --- motor operating time table is compared, inquired about, output control signal, through motor control
Device processed, motor, transmission mechanism, sunshading board is run to specified angle.
【Brief description of the drawings】
Fig. 1 is the photovoltaic sunshading board schematic cross-section of shading system of the present invention；
Fig. 2 is solar energy photovoltaic panel of the present invention and agent structure connection diagram；
Fig. 3 is the side structure schematic diagram of shading system of the present invention；
Fig. 4 is that solar energy photovoltaic system of the present invention exchanges access and counterflow-preventing design principle schematic diagram；
Fig. 5 is solar energy photovoltaic system grid-connected system electronic schematic diagram of the present invention；
Fig. 6 is solar energy photovoltaic system Anti-reflux controller operation principle schematic diagram of the present invention.
Wherein, 1, photovoltaic sun blade；2nd, fluid sealant；3rd, section bar；4th, waterproof junction box；5th, anti-drive end cover；6th, bearing
Block；7th, axle is locked；8th, Driving terminal；9th, axle；10th, axle sleeve；11st, axle sleeve connecting rod；12nd, pull bar；13rd, connecting bolt；14th, bearing；
15th, steel structure frame；16th, drive disk；17th, push rod；18th, motor.
【Embodiment】
The present invention is described in detail below in conjunction with the accompanying drawings：
As shown in Figure 1 to Figure 3, a kind of solar energy photovoltaic panel shading system for building external of the invention, including support
Structure and sunshading board (photovoltaic sun plate 1), motor and transmission mechanism, control system, photovoltaic generating system.Supporting construction includes type
Material 3 and steel structure frame 15, photovoltaic sun plate 1 are connected by fluid sealant 2 with section bar 3.Section bar 3 is respectively fixed at two ends with non-drive
Axle 9 on moved end lid 5 and Driving terminal 8, Driving terminal 8 is socketed on the connecting bolt 13 of bearing 14, bearing 14 and steel construction
Framework 15 is fixed；The axle sleeve 10 that described transmission mechanism is included on pull bar 12 and drive disk 16, pull bar 12 passes through axle sleeve connecting rod
11 are hinged with Driving terminal 8, and the one end of drive disk 16 is fixedly connected with pull bar 12；Be provided with drive tab 6 on section bar 3, the one end of axle 9 with
Axle lock 7 in drive tab 6 is connected.Described control system includes motor 18, speed changer and push rod 17, and motor 18 is by becoming
Fast device driving push rod 17, push rod 17 is connected with the other end of drive disk 16；Described photovoltaic generating system is with being arranged on anti-drive end
Terminal box electricity 4 on lid 5 is connected.
The present invention principle be：Solar energy photovoltaic panel shading system by steel structure frame 15 be fixed on building south orientation and
West is on window.Described photovoltaic sun plate 1 plays sunshade effect both as architectural shading component, and carrying again is integrated with photovoltaic electric
Pond, output power.The angle change of photovoltaic sun plate 1, can shining upon according to different time sections every day by Single-chip Controlling
Angle and outdoor light intensity change adjust automatically angle.The electric energy produced by its photovoltaic cell charges to battery simultaneously, is electricity
Machine, single-chip microcomputer or other DC equipments are powered, and alternating current used in everyday can be also converted into through inverter.The external light of single-chip microcomputer
Dependent sensor and clock chip, the outdoor light intensity change of light sensor test, light intensity signal input, clock core are provided for single-chip microcomputer
Piece generation time signal, reads for single-chip microcomputer.When outdoor light is stronger, single-chip microcomputer read current time, with storage when
Between --- motor operating time table compares, inquired about, output control signal, through electric machine controller, motor, transmission mechanism, by sunshade
Plate is run to specified angle.The rotating of every motor is by respective motor controller controls.Concrete structure is as follows：
As illustrated in fig. 1 and 2, the key element of solar energy photovoltaic panel is solar cell, and solar cell is after series connection
The solar module of large area can be formed by being packaged protection, then be formed photovoltaic hair with the parts such as power controller are closed
Electric installation.Photovoltaic sun plate 1 is assembled using section bar 3 with photovoltaic power generation apparatus, as shown in Figure 1.Every block of photovoltaic sun plate 1 passes through axle
Supporting block 6, axle 9, axle lock 7, connecting bolt 13, bearing 14 are connected with steel institutional framework 15.Driving terminal is connected in one end of component
8, it is connected by axle sleeve 10, shaft housing connector 11 with stainless reinforcing pull rod 12, driving pull bar 12 can realize the control to photovoltaic sun plate 1
System.Anti-drive end cover 5 is connected in the other end of component, waterproof junction box 4 is installed thereon, the output of photovoltaic generation electric power is realized.
As shown in figure 3, rotary solar photovoltaic panel shading system includes motion actuators and solar energy photovoltaic panel, it is described
Motion actuators include direct current generator 18, speed changer, push rod 17.Motor 18, which is rotated, drives the flexible rotation of push rod 17, so that band
Dynamic drive disk 16 and stainless reinforcing pull rod 12, realize that the rotation to photovoltaic sun plate 1 is controlled.
As shown in figure 4, using combining inverter as device for converting electric energy, solar components array being sent out into direct current and turned
It is changed into 380V alternating currents, is incorporated in building power distribution cabinet.The combining inverter can build existing city's electrical parameter from motion tracking, its
Produced 380V alternating currents change on voltage and frequency with electricity network Complete Synchronization, so as to realize the nothing with original power network
Seam connection.Due to the different periods in different seasons, and every day, sunshine to the irradiation condition of component all with
Shi Bianhua, the combining inverter using advanced MPPT (Maximum Power Point Tracking, maximum power point with
Track) technology, it is ensured that under all conditions, solar cell module is all operated under the conditions of optimal voltage and current, with most
Big power is exported.
Exchange access, counterflow-preventing and grid-connected design principle are as follows：
Fig. 5 sets forth this photovoltaic generating system with Fig. 6 and exchange access, counterflow-preventing design and grid-connected electrical schematic diagram.
As shown in figure 5, the 380V three-phase alternating currents produced by this photovoltaic plant, are matched somebody with somebody by accessing building exchange after Anti-reflux controller
In electric cabinet.As shown in fig. 6, when photovoltaic plant generates electricity and can be more than the electric energy that office building is consumed, office building will be adopted preferentially
With photovoltaic plant generate electricity can, no longer to public electric wire net power taking, the electric energy meter that power distribution cabinet city is electrically accessed side does not turn；Work as photovoltaic plant
When the energy that generates electricity is not enough, shortcoming part is supplemented by public electric wire net, and the electric energy meter that power distribution cabinet city is electrically accessed side is rotated forward；Work as electricity network
During interruption maintenance, the automatic connection disconnected with public electric wire net is prevented from causing harm to public electric wire net by combining inverter.To ensure
Photovoltaic plant, which generates electricity, preferentially to be powered to this building, without being fed to power network, need to install Anti-reflux controller additional.The equipment
The voltage and electric current of common electrical net side can be monitored at any time, once find to power network input energy, can control inverter reduction immediately
Output current, reduces photovoltaic power station power generation power；When there is communication failure or other system failures, Anti-reflux controller can be controlled
Output contactor processed disconnects, so as to thoroughly stop powering to power network.
In addition, automatic control system includes temperature and luminance sensor and PLC；Temperature and luminance sensor are used for
Temperature in collection building and brightness in real time, described temperature and luminance sensor, electric machine controller and PLC connect
Connect.
More than, only presently preferred embodiments of the present invention is not limited only to the practical range of the present invention, all according to patent of the present invention
Equivalence changes and modification that the content of scope is done, all should be the technology category of the present invention.
Claims (7)
1. a kind of solar energy photovoltaic panel shading system for building external, it is characterised in that：Including supporting construction, photovoltaic sun
Plate (1), transmission mechanism, control system and photovoltaic generating system；Described supporting construction includes section bar (3) and steel structure frame
(15), photovoltaic sun plate (1) is fixed on section bar (3), section bar (3) be respectively fixed at two ends with anti-drive end cover (5) and driving
Axle (9) on end cap (8), Driving terminal (8) is socketed on the connecting bolt of bearing (14) (13), bearing (14) and steel construction frame
Frame (15) is fixed；The axle sleeve (10) that described transmission mechanism is included on pull bar (12) and drive disk (16), pull bar (12) passes through axle
Set connecting rod (11) is hinged with Driving terminal (8), and drive disk (16) one end is fixedly connected with pull bar (12)；Described control system
Including motor (18), speed changer and push rod (17), motor (18) passes through speed changer driving push rod (17), push rod (17) and drive disk
(16) other end is connected；Described photovoltaic generating system is connected with the terminal box electric (4) being arranged on anti-drive end cover (5).
2. a kind of solar energy photovoltaic panel shading system for building external according to claim 1, it is characterised in that：Institute
Drive tab (6) is provided with the section bar (3) stated, axle (9) one end is connected with the axle lock (7) in drive tab (6).
3. a kind of solar energy photovoltaic panel shading system for building external according to claim 1, it is characterised in that：Institute
The photovoltaic sun plate (1) stated is connected by fluid sealant (2) with section bar (3).
4. a kind of solar energy photovoltaic panel shading system for building external according to claim 1, it is characterised in that：Institute
The solar energy photovoltaic panel shading system stated is fixed on building south orientation and west on window by steel structure frame (15).
5. a kind of solar energy photovoltaic panel shading system for building external according to claim 1, it is characterised in that：Institute
The photovoltaic generating system stated is accessed by combining inverter in the AC power distribution cabinet/AC distribution panel of building, for offer electricity in building
Energy.
6. a kind of solar energy photovoltaic panel shading system for building external according to claim 5, it is characterised in that：Institute
The combining inverter stated also is accessed in the AC power distribution cabinet/AC distribution panel of building by Anti-reflux controller, Anti-reflux controller and grid side
Voltage, current monitoring device connection.
7. a kind of solar energy photovoltaic panel shading system for building external according to claim 1, it is characterised in that：Also
Including automatic control system, automatic control system includes temperature and luminance sensor and PLC；Described motor (18) by
Motor controller controls, described temperature and luminance sensor, electric machine controller are connected with PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710297396.4A CN106953587A (en) | 2017-04-28 | 2017-04-28 | A kind of building external solar energy photovoltaic panel shading system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710297396.4A CN106953587A (en) | 2017-04-28 | 2017-04-28 | A kind of building external solar energy photovoltaic panel shading system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106953587A true CN106953587A (en) | 2017-07-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710297396.4A Pending CN106953587A (en) | 2017-04-28 | 2017-04-28 | A kind of building external solar energy photovoltaic panel shading system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106953587A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185177A (en) * | 2019-06-25 | 2019-08-30 | 中联西北工程设计研究院有限公司 | A kind of cavity curtain wall of foldable variation |
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| US6421966B1 (en) * | 2000-04-28 | 2002-07-23 | Kawneer Company Inc. | Sunshade for building exteriors |
| CN202444279U (en) * | 2012-02-23 | 2012-09-19 | 盐城正邦环保科技有限公司 | Countercurrent prevention system |
| CN202978763U (en) * | 2012-11-26 | 2013-06-05 | 西安大昱光电科技有限公司 | Louver type photovoltaic assembly |
| CN203257308U (en) * | 2013-04-26 | 2013-10-30 | 北京艾德意科技有限责任公司 | Solar photovoltaic power generating sun-shading louver |
| CN204040858U (en) * | 2014-08-22 | 2014-12-24 | 朱耀 | Be arranged on the photovoltaic sun unit on outdoor glass window |
| KR20150028865A (en) * | 2013-08-13 | 2015-03-17 | 주식회사 비엔엘 | Electrically-Powered Blind with Solar Power |
| CN105133798A (en) * | 2015-09-22 | 2015-12-09 | 大连理工大学 | Building integrated photovoltaics shutter external sunshade system |
| CN105674381A (en) * | 2016-01-21 | 2016-06-15 | 倪爱环 | Automatic window opening type environment-friendly house heated by solar energy and control method thereof |
| JP2016163522A (en) * | 2015-03-05 | 2016-09-05 | 株式会社ジェンク | Angle variable photovoltaic power generation system |
-
2017
- 2017-04-28 CN CN201710297396.4A patent/CN106953587A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6421966B1 (en) * | 2000-04-28 | 2002-07-23 | Kawneer Company Inc. | Sunshade for building exteriors |
| CN202444279U (en) * | 2012-02-23 | 2012-09-19 | 盐城正邦环保科技有限公司 | Countercurrent prevention system |
| CN202978763U (en) * | 2012-11-26 | 2013-06-05 | 西安大昱光电科技有限公司 | Louver type photovoltaic assembly |
| CN203257308U (en) * | 2013-04-26 | 2013-10-30 | 北京艾德意科技有限责任公司 | Solar photovoltaic power generating sun-shading louver |
| KR20150028865A (en) * | 2013-08-13 | 2015-03-17 | 주식회사 비엔엘 | Electrically-Powered Blind with Solar Power |
| CN204040858U (en) * | 2014-08-22 | 2014-12-24 | 朱耀 | Be arranged on the photovoltaic sun unit on outdoor glass window |
| JP2016163522A (en) * | 2015-03-05 | 2016-09-05 | 株式会社ジェンク | Angle variable photovoltaic power generation system |
| CN105133798A (en) * | 2015-09-22 | 2015-12-09 | 大连理工大学 | Building integrated photovoltaics shutter external sunshade system |
| CN105674381A (en) * | 2016-01-21 | 2016-06-15 | 倪爱环 | Automatic window opening type environment-friendly house heated by solar energy and control method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185177A (en) * | 2019-06-25 | 2019-08-30 | 中联西北工程设计研究院有限公司 | A kind of cavity curtain wall of foldable variation |
| CN110185177B (en) * | 2019-06-25 | 2024-01-30 | 中联西北工程设计研究院有限公司 | Cavity curtain wall capable of folding and changing |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170714 |
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