CN110374481A - From discoloration window and its indoor environment regulating system - Google Patents
From discoloration window and its indoor environment regulating system Download PDFInfo
- Publication number
- CN110374481A CN110374481A CN201910691930.9A CN201910691930A CN110374481A CN 110374481 A CN110374481 A CN 110374481A CN 201910691930 A CN201910691930 A CN 201910691930A CN 110374481 A CN110374481 A CN 110374481A
- Authority
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- China
- Prior art keywords
- windowpane
- window
- optically variable
- solar radiation
- frame
- 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
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/28—Other arrangements on doors or windows, e.g. door-plates, windows adapted to carry plants, hooks for window cleaners
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Power-Operated Mechanisms For Wings (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
The present invention discloses a kind of from discoloration window and its indoor environment regulating system, discoloration window is provided with window frame, windowpane is installed on the window frame, tiling has stretching optically variable films in the hollow region of the glass plate of windowpane, after one end of the stretching optically variable films is pierced by glass plate, it is connect with the servo-actuated tensioning system being arranged in the frame, which is used to inwardly rotate with the windowpane, stretches the stretching optically variable films.Indoor environment regulating system is arranged from discoloration window, and angular transducer, solar radiation parameter detecting instrument, ventilation regulation unit, temperature adjustment unit, the rotational angle for the windowpane that ventilation regulation unit is detected according to angular transducer adjusts indoor ventilation quantity；The solar radiation parameter that temperature adjustment unit is detected according to the rotational angle and solar radiation parameter detecting instrument of windowpane, adjusts indoor temperature.
Description
Technical field
The present invention relates to the control system fields of on-electric variable, more particularly to a kind of from discoloration window and its indoor environment
Regulating system.
Background technique
The window of existing most of smart classrooms is all made of electrochomeric glass, by controlling the size of voltage, changes
The color of electrochomeric glass achievees the purpose that control religion indoor illumination intensity to change the light transmittance of glass.Due to electroluminescent
Photo chromic glass needs continual and steady voltage to supply, and is just able to maintain that color is constant, and therefore, it is necessary to consume the more energy.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of from discoloration window and its indoor environment regulating system, passes through
Fully mechanical drawing mechanism stretches the stretching optically variable films in hollow glass, changes the color of windowpane, to change windowpane
Light transmittance, achieve the purpose that control religion indoor illumination intensity.
Technical solution is as follows:
In a first aspect, providing a kind of discoloration window certainly, it is provided with window frame, windowpane is installed on the window frame, the windowpane
Frame side and window frame it is hinged, the glass plate of the windowpane is insulating glass unit, and hollow region is enclosed with the frame
At region it is corresponding, and in hollow region tiling have stretching optically variable films, one end of the stretching optically variable films is pierced by glass
After plate, connect with the servo-actuated tensioning system being arranged in the frame, the servo-actuated tensioning system be used for the windowpane to
Interior rotation stretches the stretching optically variable films.
With reference to first aspect, the first in first aspect can be in realization mode, and the servo-actuated tensioning system is provided with master
Roller, which is vertically arranged in frame and the hinged side of window frame, and connect with the stretching optically variable films；The window frame
On along the rotation direction of windowpane be provided with arc groove, the arc-shaped rack matched is provided in the arc groove, the master roller
It after roll shaft one end is pierced by frame, protrudes into the arc groove, and is engaged by stud wheel with arc-shaped rack.
With reference to first aspect the first can realize mode, in second of achievable mode of first aspect, the master
The roll shaft of roller is provided with home roll axis and from roll shaft, and one end of the home roll axis is connect with the cylinder of the master roller, other end warp
Retaining mechanism is connect with one end from roll shaft, described to connect stud wheel from the other end of roll shaft.
The achievable mode of second with reference to first aspect, the third in first aspect can be in realization mode, the lock
Tight mechanism is provided with connecting column, and one end and the home roll axis of the connecting column are fixed, the other end be provided with matched with from roll shaft it is slotting
Hole is provided with locking anchor ear at the aperture of the jack, after the clamping screw of the locking anchor ear is pierced by the frame, is connected with rotation
Handle.
Any achievable mode with reference to first aspect or in second and third kind of first aspect, the 4th of first aspect the
In the achievable mode of kind, the stretching optically variable films is optically variable films made of polyurethane elastomer material.
Second aspect provides a kind of indoor environment regulating system, is provided with above-mentioned discoloration window certainly.
In conjunction with second aspect, the first in second aspect can be in realization mode, and indoor environment regulating system is additionally provided with:
Angular transducer generates rotation information for detecting the rotational angle of windowpane；
Solar radiation parameter detecting instrument, for sensing chamber outside solar radiation parameter；
Ventilation regulation unit, for adjusting indoor ventilation quantity according to rotation information；
Temperature adjustment unit, for adjusting indoor temperature according to rotation information and solar radiation parameter.
The first in conjunction with second aspect can realize mode, described logical in second of achievable mode of second aspect
Wind adjusts unit and is provided with
Ventilation blower is used for room ventilation；
Processor generates power adjustment for calculating the draught area of window according to rotation information, and according to draught area
Signal；
Frequency converter, for obtaining power adjustment signal, and according to the supply frequency of power adjustment signal adjustment ventilation blower.
The first in conjunction with second aspect can realize mode, the third in second aspect can be in realization mode, the lamp
Light adjustment unit is provided with
Processing module, for estimating indoor solar radiation quantity, and according to too according to rotation information and solar radiation parameter
Positive amount of radiation generates temperature control information；
Air-conditioning, for the operating temperature according to temperature control information adjustment setting.
The third in conjunction with second aspect can realize mode, in the 4th kind of achievable mode of second aspect, the place
Module is managed according to rotation information and illuminance information, estimates indoor solar radiation quantity, comprising:
It is determined according to rotation information and stretches stress intensity suffered by optically variable films；
The color depth for stretching optically variable films is determined according to stress intensity；
The light transmittance of corresponding windowpane is determined by color depth；
According to light transmittance and solar radiation parameter, indoor solar radiation quantity is estimated.
The utility model has the advantages that being changed by the way of mechanical using of the invention from discoloration window and its indoor environment regulating system
The color for becoming glass achievees the purpose that control indoor light intensity；The color that electric power maintains glass is not needed, energy consumption is reduced.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of windowpane 2 in Fig. 1；
Fig. 3 is the schematic diagram of internal structure of windowpane；
Fig. 4 is main roll shaft 11 and the attachment structure schematic diagram from roll shaft 12；
Fig. 5 is the structural schematic diagram of arc groove 8；
Fig. 6 is the system block diagram of environment adjustment system；
Fig. 7 is the system principle diagram of ventilation adjustment unit；
Fig. 8 is the system principle diagram of thermostat unit.
Specific embodiment
Below with reference to embodiment and attached drawing, the invention will be further described.
Structural schematic diagram from the window that changes colour as shown in Figure 1 should be provided with window frame 1 from discoloration window, pacify on the window frame 1
Equipped with windowpane 2, the side of the frame 3 of the windowpane 2 and window frame 1 are hinged, as shown in Figure 2 and Figure 3, the glass of the windowpane 2
Plate 4 is insulating glass unit, and hollow region 5 is corresponding with the region that the frame 3 surrounds, and tiles and have in hollow region 5
Optically variable films 6 is stretched, after one end of the stretching optically variable films 6 is pierced by glass plate 4, with the servo-actuated drawing being arranged in the frame 3
System connection is stretched, which is used to stretch the stretching optically variable films 6 with the inwardly rotation of windowpane 2.
Specifically, in the present embodiment, in order to which the technical solution of the application is explicitly described, selecting with regular rectangular shape
For windowpane 2.The left border 3 and window frame 1 of windowpane 2 are hinged.In the rectangular area that 4 frames 3 of windowpane 2 are surrounded
Interior, insulating glass unit is provided with the identical rectangular hollow region 5 of shape, and tiling is just like stretching color-changing polyurethane in hollow region 5
Optically variable films 6 is stretched made of elastomeric material, is equivalent to stretching optically variable films 6 and is covered the rectangle that entire frame 3 is surrounded
Region.
The servo-actuated tensioning system being arranged in left border 3 belongs to mechanical servo, stretches a left side for photo chromic glass
The left side wall across glass plate 4 is held, is connect with servo-actuated tensioning system, right end and glass plate 4 are fixed.When windowpane 2 inwardly rotates
When, servo-actuated tensioning system can stretch the stretching optically variable films 6 being arranged in glass plate 4, stretch optically variable films 6 in the work of stress
It under, darkens, to reduce the light transmittance of windowpane 2.
And when windowpane 2 is turned out, servo-actuated tensioning system can loosen to the pulling force for stretching optically variable films 6, stretch
The stress of optically variable films 6 reduces, and color gradually becomes shallower as, until being returned to original state.As long as windowpane 2 does not rotate, glass
The color of window 2 would not change, and reach and do not need electric power, also can control the purpose of indoor light intensity.
In the present embodiment, it is preferred that as shown in Figure 4, Figure 5, the servo-actuated tensioning system is provided with master roller 7, the master
Roller 7 is vertically arranged in frame 3 and the hinged side of window frame 1, and connect with the stretching optically variable films 6；Edge on the window frame 1
The rotation direction of windowpane 2 is provided with arc groove 8, and the arc-shaped rack 9 matched is provided in the arc groove 8, the master roller 7
It after roll shaft one end is pierced by frame 3, protrudes into the arc groove 8, and is engaged by stud wheel 10 with arc-shaped rack 9.
Specifically, arc groove 8 is arranged along the rotation path of windowpane 2, the roll shaft upper end of master roller 7 passes through bearing
15 is fixed with the frame 3 of top, after the lower end of roll shaft is pierced by the frame 3 of lower section, protrudes into arc groove 8, and pass through stud wheel 10
It is engaged with the arc-shaped rack 9 being fitted on 8 cell wall of arc groove.During windowpane 2 inwardly rotates, in arc-shaped rack 9
Under effect, stud wheel 10 can rotate rotating forward, to drive master roller 7 is horizontal to rotate forward, the tightening of master roller 7 stretches optically variable films 6, right
It stretches optically variable films 6 and applies stress, stretch darkening for optically variable films 6.
During windowpane 2 is turned out, the stud wheel 10 connecting with roll shaft is under the action of arc-shaped rack 9, meeting
7 horizontal inversion of master roller is driven, master roller 7, which loosens, stretches optically variable films 6, stretches optically variable films 6 gradually under the action of elastic force
It is restored to original state, color also returns to original state.
In the present embodiment, it is preferred that as shown in figure 4, the roll shaft of the master roller 7 is provided with home roll axis 11 and from roll shaft
12, one end of the home roll axis 11 is connect with the cylinder of the master roller 7, the other end through retaining mechanism 13 with from one end of roll shaft 12
Connection, it is described to connect stud wheel 10 from the other end of roll shaft 12.
Specifically, when needing to adjust indoor intensity of illumination 11 He of home roll axis can be locked by retaining mechanism 13
From roll shaft 12, in this way, master roller 7 can be driven to rotate by stud wheel 10 when windowpane 2 is rotated.When needing to close window,
When without adjustment illuminance, when as cold such as wintry weather, retaining mechanism 13 can be unclamped, when being rotated further by windowpane 2 at this time, only
Have from roll shaft 12 as stud wheel 10 rotates, and home roll axis 11 not can rotate, therefore master roller 7 will not stretch optically variable films 6, glass
The light transmittance of glass window 2 will not change, and injecting indoor intensity of illumination will not be affected.
In the present embodiment, it is preferred that as shown in figure 4, the retaining mechanism 13 is provided with connecting column 14, the connecting column 14
One end and home roll axis 11 it is fixed, the other end is provided with the jack matched with from roll shaft 12, is provided at the aperture of the jack
Locking anchor ear 16 is connected with swing handle 17 after the clamping screw of the locking anchor ear 16 is pierced by the frame 3.
Specifically, when needing to adjust light intensity, home roll axis 11 can be locked and from roll shaft by rotating forward swing handle 17
12, when not needing adjustment light intensity, rotates backward that handle 17 can unclamp home roll axis 11 and from roll shaft 12, structure is simple, facilitate behaviour
Make.
A kind of indoor environment regulating system, the regulating system are provided with above-mentioned discoloration window certainly.By this from color-changing window
Family can manually adjust the color of windowpane 2, change the light transmittance of windowpane 2, so as to adjust indoor intensity of illumination, and
Certain intensity of illumination can also be maintained by not needing electric power, save the energy.
In the present embodiment, it is preferred that as shown in fig. 6, regulating system is additionally provided with:
Angular transducer generates rotation information for detecting the rotational angle of windowpane 2；
Solar radiation parameter detecting instrument, for sensing chamber outside solar radiation parameter；
Ventilation regulation unit, for adjusting indoor ventilation quantity according to rotation information；
Temperature adjustment unit, for adjusting indoor temperature according to rotation information and solar radiation parameter.
Specifically, the draught area of window can be had an impact after being changed due to the color of windowpane 2, from
And influence indoor air quality.Therefore, it can detecte the rotational angle of windowpane 2 by angular transducer, and windowpane 2
Width is it is known that can calculate the draught area of window with this, to estimate the general air mass flow of window, ventilation parameters list
Member can compensate indoor ventilation quantity according to general air mass flow, so that indoor air is maintained at relatively preferably
In mass range.
And after the color of windowpane 2 changes, absorption due to windowpane 2 to solar radiation can be to indoor temperature
Degree generates certain influence.Therefore the solar radiation parameter that outdoor environment can be detected by solar radiation parameter detecting instrument, such as may be used
Light-exposed intensity, uitraviolet intensity and infra-red intensity etc..
The pulling force for stretching the application of optically variable films 6 due to 11 pairs of home roll axis is directly proportional to rotational angle, while it is thin to stretch discoloration
The color depth of film 6 is directly proportional to tensile stress, and the color depth for stretching optically variable films 6 is deeper, and the ability for absorbing radiation is got over
By force, therefore, the color depth for stretching optically variable films 6 can be determined by rotational angle, to estimate that windowpane 2 absorbs sun spoke
The ability penetrated is injected indoor after can substantially estimating adjustment indoor illumination intensity in conjunction with the solar radiation parameter of outdoor environment
Radiation variation amount.Temperature adjustment unit can adjust indoor temperature according to radiation variation amount, to weaken because of illuminance adjusting pair
The influence of room temperature.In the present embodiment, angular transducer, solar radiation parameter detecting instrument, ventilation regulation unit, temperature tune
Whole unit is all made of existing equipment.
In the present embodiment, it is preferred that as shown in fig. 7, the ventilation regulation unit is provided with
Ventilation blower is used for room ventilation；
Processor generates power adjustment for calculating the draught area of window according to rotation information, and according to draught area
Signal；
Frequency converter, for obtaining power adjustment signal, and according to the supply frequency of power adjustment signal adjustment ventilation blower.
Specifically, processor calculates reduction draught area according to the rotational angle in rotation information, just pass through frequency conversion
Device increases the supply frequency of ventilation blower, so that the ventilation quantity of ventilation blower is improved, to weaken since illuminance is adjusted to room air
The influence of quality.Conversely, then weakening the ventilation quantity of ventilation blower, in the present embodiment, processor can use existing embedded place
Manage device, if STM32 series, peripheral circuit, and with angular transducer, frequency converter connection type with existing frequency conversion control
The connection type of system processed is identical.
In the present embodiment, it is preferred that as shown in figure 8, the light adjustment unit is provided with
Processing module, for estimating indoor solar radiation quantity, and according to too according to rotation information and solar radiation parameter
Positive amount of radiation, generation temperature control information, the data processing unit that processing module is made of existing embedded control chip,
Its peripheral circuit, and be with existing control with the connection type of angular transducer, solar radiation parameter detecting instrument, air-conditioning
The connection type of system is identical.
Air-conditioning, for the operating temperature according to temperature control information adjustment setting.
Specifically, after windowpane 2 inwardly rotates, processing module can according to the rotational angle in rotation information, from
Transfer the ability parameter that the corresponding windowpane 2 that prestores absorbs solar radiation in the memory of itself, which can be with
It detects to obtain by test of many times.
Processing module binding ability parameter and extraneous solar radiation parameter inject indoor solar radiation after estimation rotation
Variable quantity generate temperature control information, and be sent to air-conditioning so that it is determined that the adjusting temperature of air-conditioning.Air-conditioning can be according to temperature
Adjusting temperature in degree control information controls the temperature control system work of its own.
In the present embodiment, it is preferred that for the processing module according to rotation information and illuminance information, estimation is indoor too
Positive amount of radiation, comprising:
It is determined according to rotation information and stretches stress intensity suffered by optically variable films 6；
The color depth for stretching optically variable films 6 is determined according to stress intensity；
The light transmittance of corresponding windowpane 2 is determined by color depth；
According to light transmittance and solar radiation parameter, indoor solar radiation quantity is estimated.
Specifically, rotational angle and the corresponding relationship of stress intensity can be obtained by test, corresponding relationship can be with
There are in processor and the memory of processing module itself, between same stress intensity and the color depth for stretching optically variable films 6
Corresponding relationship, corresponding relationship can be obtained by existing test between color depth and the light transmittance of windowpane 2.It is above-mentioned
Corresponding relationship is stored in processor and the memory of processing module itself, to transfer.Pass through light transmittance and solar radiation
Parameter can be estimated substantially and inject indoor amount of radiation through glass, so that it is determined that the change of light intensity indoor amount of radiation adjusted
Change range.
Finally, it should be noted that foregoing description is only the preferred embodiment of the present invention, the ordinary skill people of this field
Member under the inspiration of the present invention, without prejudice to the purpose of the present invention and the claims, can make multiple similar tables
Show, such transformation is fallen within the scope of protection of the present invention.
Claims (10)
1. a kind of be provided with window frame, be equipped with windowpane on the window frame from discoloration window, the side of the frame of the windowpane and window
Frame is hinged, it is characterised in that:
The glass plate of the windowpane is insulating glass unit, and hollow region is corresponding with the region that the frame surrounds, and
Tiling has stretching optically variable films in hollow region, after one end of the stretching optically variable films is pierced by glass plate, with setting on the side
Servo-actuated tensioning system connection in frame, the servo-actuated tensioning system are used to inwardly rotate with the windowpane, stretch the stretching
Optically variable films.
2. according to claim 1 from discoloration window, it is characterised in that: the servo-actuated tensioning system is provided with master roller,
The master roller is vertically arranged in frame and the hinged side of window frame, and connect with the stretching optically variable films；Edge on the window frame
The rotation direction of windowpane is provided with arc groove, and the arc-shaped rack matched, the roll shaft of the master roller are provided in the arc groove
It after one end is pierced by frame, protrudes into the arc groove, and is engaged by stud wheel with arc-shaped rack.
3. it is according to claim 2 from discoloration window, it is characterised in that: the roll shaft of the master roller be provided with home roll axis and
From roll shaft, one end of the home roll axis is connect with the cylinder of the master roller, and the other end connects through retaining mechanism with from one end of roll shaft
It connects, it is described to connect stud wheel from the other end of roll shaft.
4. according to claim 3 from discoloration window, it is characterised in that: the retaining mechanism is provided with connecting column, the company
The one end and home roll axis for connecing column are fixed, and the other end is provided with the jack matched with from roll shaft, are provided at the aperture of the jack
Locking anchor ear is connected with swing handle after the clamping screw of the locking anchor ear is pierced by the frame.
5. according to claim 1 to 4 from discoloration window, it is characterised in that: the stretching optically variable films is polyurethane
Optically variable films made of elastomeric material.
6. a kind of indoor environment regulating system, which is characterized in that be provided with as claimed in claim 5 from discoloration window.
7. indoor environment regulating system according to claim 6, which is characterized in that be additionally provided with:
Angular transducer generates rotation information for detecting the rotational angle of windowpane；
Solar radiation parameter detecting instrument, for sensing chamber outside solar radiation parameter；
Ventilation regulation unit, for adjusting indoor ventilation quantity according to rotation information；
Temperature adjustment unit, for adjusting indoor temperature according to rotation information and solar radiation parameter.
8. indoor environment regulating system according to claim 7, which is characterized in that the ventilation regulation unit is provided with
Ventilation blower is used for room ventilation；
Processor generates power adjustment signal for calculating the draught area of window according to rotation information, and according to draught area；
Frequency converter, for obtaining power adjustment signal, and according to the supply frequency of power adjustment signal adjustment ventilation blower.
9. indoor environment regulating system according to claim 7, which is characterized in that the light adjustment unit is provided with
Processing module, for estimating indoor solar radiation quantity, and according to sun spoke according to rotation information and solar radiation parameter
The amount of penetrating generates temperature control information；
Air-conditioning, for the operating temperature according to temperature control information adjustment setting.
10. indoor environment regulating system according to claim 9, which is characterized in that the processing module is believed according to rotation
Breath and illuminance information, estimate indoor solar radiation quantity, comprising:
It is determined according to rotation information and stretches stress intensity suffered by optically variable films；
The color depth for stretching optically variable films is determined according to stress intensity；
The light transmittance of corresponding windowpane is determined by color depth；
According to light transmittance and solar radiation parameter, indoor solar radiation quantity is estimated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910691930.9A CN110374481B (en) | 2019-07-30 | 2019-07-30 | Self-color-changing window and indoor environment adjusting system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910691930.9A CN110374481B (en) | 2019-07-30 | 2019-07-30 | Self-color-changing window and indoor environment adjusting system thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110374481A true CN110374481A (en) | 2019-10-25 |
| CN110374481B CN110374481B (en) | 2020-06-26 |
Family
ID=68256748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910691930.9A Active CN110374481B (en) | 2019-07-30 | 2019-07-30 | Self-color-changing window and indoor environment adjusting system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110374481B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113110080A (en) * | 2021-04-14 | 2021-07-13 | 武汉奥果果网络科技有限公司 | Household environment intelligent monitoring, regulation and control management cloud system based on Internet of things and cloud computing |
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| CN201557947U (en) * | 2009-11-25 | 2010-08-25 | 维泰机电（广州）有限公司 | Novel clutch |
| CA2829648C (en) * | 2013-01-29 | 2017-06-06 | The Boeing Company | Window shading assembly |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110374481B (en) | 2020-06-26 |
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