CN106225033A - A kind of blower fan structure forming artificial spout and range hood - Google Patents
A kind of blower fan structure forming artificial spout and range hood Download PDFInfo
- Publication number
- CN106225033A CN106225033A CN201610586966.7A CN201610586966A CN106225033A CN 106225033 A CN106225033 A CN 106225033A CN 201610586966 A CN201610586966 A CN 201610586966A CN 106225033 A CN106225033 A CN 106225033A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- fan blade
- blower fan
- artificial spout
- structure forming
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
Abstract
The present invention relates to a kind of blower fan structure forming artificial spout and range hood, including motor, the output shaft of described motor connects the first fan blade；It is characterized in that: the outside Driven by Coaxial of described first fan blade connects the oppositely oriented of the second fan blade, described first fan blade and described second fan blade；Described first fan blade is contained in the first sleeve, or described first fan blade is arranged on the port of described first sleeve；Described first bush outer sleeve is provided with the second sleeve；Described second fan blade is contained in the air channel between described first sleeve and the second sleeve, or described second fan blade is arranged on the port in described air channel.The present invention enormously simplify the structure of tornado device, reduces the volume of tornado device, and tornado is effective.
Description
Technical field
The present invention relates to a kind of axial flow blower, refer specifically to a kind of blower fan structure forming artificial spout and fume-exhausting
Machine.
Background technology
For improving the suction effect of range hood, people have developed artificial spout device for assisting the centrifugal wind of routine
Machine fume exhaust.Lampblack absorber tornado device generally has two ways at present: one is the extra at least two group blower fans that arrange, and one
Group is used for drying, and one group in order to blow；It is more that this structure adds parts, and structure is complicated, and is limited to the inner space of range hood,
Tornado effect is more weak.Besides by ejector jet-stream wind in the original air channel of range hood, utilize jet-stream wind band
Dynamic oil smoke is up, coordinates centrifugal blower；This structure energy consumption is high and noise is big.
Summary of the invention
The technical problem to be solved is that the present situation for prior art provides a kind of tornado effective and knot
Structure simply can form the blower fan structure of artificial spout.
To be solved by this invention another technical problem is that the present situation for prior art provide a kind of simple in construction and
The range hood with artificial spout device of the suction effect of range hood can be significantly improved.
The present invention solves the technical scheme that above-mentioned technical problem used: this can form blower fan knot of artificial spout
Structure, including motor, the output shaft of described motor connects the first fan blade；It is characterized in that:
The outside Driven by Coaxial of described first fan blade connects the second fan blade, described first fan blade and described second fan blade
Oppositely oriented；
Described first fan blade is contained in the first sleeve, or described first fan blade is arranged on the port of described first sleeve
On；
Described first bush outer sleeve is provided with the second sleeve；
Described second fan blade is contained in the air channel between described first sleeve and the second sleeve, or described second fan blade
It is arranged on the port in described air channel.
Preferably, described air channel cross-sectional area become larger to air outlet from air inlet so that exit flow accelerate,
Concurrently form stronger rotary wind screen, be used for covering and treat suction air-flow, further enhance the suction effect of tornado.
The cross-sectional area of the upper port meeting described air channel has multiple more than the structure of the cross-sectional area of air channel lower port, example
Such as tubaeform first sleeve or the second sleeve, preferably, the sidewall longitudinal section of described first sleeve can be S-shaped；This structure pair
In air channel, air-flow has certain good guiding and acceleration, and gas-flow resistance is little.
For convenience of the location of the second fan blade, can connect at the external end edge of described first fan blade and have the first lasso, described the
Two fan blades are connected on described first lasso；Described first lasso can connect the osculum of described first sleeve rotationally；
Described second housing supports is arranged on the spaced support member of polylith, and each described support member is arranged on described
On the outer wall of one sleeve.
In above-mentioned each scheme, the upper port area of described first sleeve is less than the lower port area of described first sleeve.Loudspeaker
Second sleeve institute blow flow can be guided by the first sleeve of shape, forms the air curtain that extends out, simultaneously the second sleeve with
The ducting outlet of the first sleeve diminishes, it is possible to accelerates the flow velocity of air-flow, further enhances the effect of air curtain and tornado.
The height of described second sleeve is less than the height of described first sleeve, and described second sleeve is set in described the
The upper outside of one sleeve.This structure is more beneficial for forming strength air curtain, thus covers utensil corresponding below.
Preferably, the cone angle of described first sleeve can be 60～120 °.
Preferably, it is also possible between described first sleeve and described second sleeve, be additionally provided with intermediate sleeve, described centre
In sleeve is contained in described air channel and be positioned at the lower section of described second fan blade；
The first air outlet, described first sleeve and institute is formed between described second sleeve and the lower port of described intermediate sleeve
State and between the lower port of intermediate sleeve, form the second air outlet；
The air supply direction of described second air outlet is less than described first air outlet relative to lead relative to the angle β of plumb line
The angle α of vertical line.
Described angle α is 30～60 °, and described angle β is 20～50 °, and described alpha-beta is 5～10 °.
The upper port area of described second sleeve is less than the lower port area of described second sleeve, and described second sleeve
Height more than described first sleeve and the height of described intermediate sleeve.
In above-mentioned each scheme, described motor can select support member as required, preferably, and can be at described first lasso
Being provided with support, described motor is arranged on the bracket.The position of program motor and the assembling structure interference to tornado
Minimum.
The blower fan structure of the formed artificial spout in above-mentioned each scheme can make by the most supporting arbitrary equipment
With, it is especially suitable for being matched with on range hood using.
Use the range hood of above-mentioned a kind of blower fan structure forming artificial spout, it is characterised in that described first set
Cylinder connects volute inlet or the smoke collecting chamber entrance of range hood；Described first fan blade is to up-draught, and described second fan blade blows downwards
Wind.
Preferably, can also be connected between described volute inlet or described smoke collecting chamber entrance with described first sleeve and have connection
Sleeve, to reduce the generation position of tornado, thus promotes cooking fume exhausting effect further.
Compared with prior art, the blower fan structure forming artificial spout provided by the present invention and range hood pass through
One blower fan simultaneously drives two groups of oppositely oriented fan blades and rotates, mating sleeve produces tornado, it is to avoid making of multiple blower fans
With, enormously simplify the structure of the blower fan structure that can form artificial spout, reduce the blower fan knot that can form artificial spout
The volume of structure；This blower fan structure that can form artificial spout is applied on range hood, coordinates range hood centrifugal fan,
Oil smoke can be covered and formed in fan housing the vortex of upwards quickly flowing, help the suction of centrifugal blower, significantly improve oil
The suction effect of cigarette.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of the blower fan structure that can form artificial spout in the embodiment of the present invention 1；
Fig. 2 is the longitudinal sectional view of Fig. 1；
Fig. 3 is the schematic perspective view of the embodiment of the present invention 1 decomposition texture；
Fig. 4 is the flow direction schematic diagram (positive apparent direction) of air-flow in each air channel in the embodiment of the present invention 1；
Fig. 5 is the flow direction schematic diagram (vertical view direction) of air-flow in each air channel in the embodiment of the present invention 1；
Fig. 6 is the schematic perspective view that the embodiment of the present invention 1 uses state；
Fig. 7 is the first sleeve in the embodiment of the present invention 2, the second sleeve and the longitudinal sectional view of intermediate sleeve assembling structure.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As shown in Figures 1 to 6, the range hood of this blower fan structure with artificial spout includes:
Spiral case 91, is provided with centrifugal blower 92 in spiral case 91, the entrance of spiral case connects branch sleeve 9, branch sleeve 9
Lower section connects the blower fan that can produce artificial spout.
This blower fan that can produce artificial spout includes the first sleeve 4 being connected with branch sleeve 9.
Branch sleeve 9 can also be arranged between the entrance of the smoke collecting chamber of range hood and the first sleeve 4.
Motor 1, is arranged over the mount 10, and in the present embodiment, support 10 is arranged on the first lasso 6, the output shaft of motor 1
Drive connection the first fan blade 2.
Support 10 can also be arranged as required on matching used equipment.
The external end edge of the first fan blade 2 connects the first lasso 6, and the periphery wall of the first lasso 6 connects the second fan blade 3.This
Embodiment is also associated with the second lasso 13 at the external end edge of the second fan blade 3；The second lasso 13 can also be not provided with as required.
Motor 1 drives the first fan blade 2 to rotate, and the first fan blade 2 drives the first lasso 6 to rotate, and the first lasso 6 drives the second wind
Leaf 3 rotates together with the second lasso 13.
In the present embodiment, the first fan blade 2 and the second fan blade 3 is oppositely oriented, so that the first fan blade 2 is to up-draught, and second
Fan blade 3 is dried downwards.
First lasso 6 can be rotatably arranged in the upper port of the first sleeve 4, so that the first fan blade 2 is to first set
The inner chamber of cylinder 4.First sleeve 4 is horn-like, and the upper port of the first sleeve 4 is osculum, and lower port is big mouth.
The longitudinal section sidewall of the first sleeve 4 can also be designed as other shape as required, such as waveform, sector or
Person's arc etc., makes the upper port area in air channel 14 be more than the area of lower port and be conducive to increasing wind speed.
It is interval with polylith support member 7 on the lateral wall of the first sleeve 4；Second sleeve 5 is set in outside the first sleeve 4 and props up
Support is arranged on each support member 7.
In the present embodiment, the height of the second sleeve 5 is less than the height of the first sleeve 4, and the second sleeve 5 is set in the first sleeve
The upper outside of 4.
Second fan blade 3 is contained in the air channel 14 between the second sleeve 5 and the first sleeve 4 and branch sleeve 9.
During work, motor 1 simultaneously drives the first fan blade 2 and the second fan blade 3 rotates；Second fan blade 3 rotates produced gas
Stream blows out downwards in air channel 14, and owing to air channel 14 cross section from top to bottom tapers into, therefore the flow velocity of air-flow is in air channel
Outlet is accelerated, the air-flow blown out in the air channel in along the outer wall helical rotation of the first sleeve 4, along the first sleeve 4 inclined-plane to
Lower formation rotary wind screen, covers the oil smoke of lower section, is prevented effectively from oil smoke and leaks, and produces malleation；Meanwhile, the first fan blade
2 rotate the air-flow that generation is drawn up, and produce negative pressure in air curtain；Malleation and negative pressure act on jointly, are formed the most upwards
The quickly vortex of flowing, produces tornado, is drawn up by the oil smoke covered, oil smoke under the suction of centrifugal blower 92 in air curtain
It is discharged.
Embodiment 2
As it is shown in fig. 7, in the blower fan structure of the formed artificial spout of the present embodiment:
It is additionally provided with intermediate sleeve 7, in intermediate sleeve 7 is contained in air channel 14 and be positioned between first sleeve 4 and the second sleeve 5
The lower section of the second fan blade 3, intermediate sleeve 7 is fixed on support member 41.
The first air outlet 81, the first sleeve 4 and intermediate sleeve 7 is formed between second sleeve 5 and the lower port of intermediate sleeve 7
Lower port between form the second air outlet 82；
The air supply direction of the second air outlet 82 is less than described first air outlet 81 relative to lead relative to the angle β of plumb line
The angle α of vertical line.
Angle α is 40 °, and described angle β is 30 °, and described alpha-beta is 10 °.
The upper port area of the second sleeve 5 is less than the lower port area of the second sleeve 5, and the height of the second sleeve 5 is big
In the first sleeve 4 and the height of intermediate sleeve 7.
During work, the second fan blade 3 rotates a produced air-flow part and sends from the first air outlet 81, in rotation formed below
The air bell turned, produces malleation to the smog of lower section；Another part is sent from the second air outlet 82, and smog is micro-to center
Micro-gathering, prevents smog from scattering under the effect of malleation air-flow；First fan blade produce air-flow in the cavity of the first sleeve 4 to
Upper suction, produces negative pressure at middle part；Both mating reactions, form the vortex of the most quickly flowing, produce tornado
Effect；Further, the tornado device in the present embodiment will not break up smog to be pumped, and suction effect is more preferable.
Remaining content is same as in Example 1.
Claims (12)
1. can form a blower fan structure for artificial spout, including motor (1), the output shaft of described motor (1) connects first
Fan blade (2)；It is characterized in that:
The outside Driven by Coaxial of described first fan blade (2) connects the second fan blade (3), described first fan blade (2) and described second
Fan blade (3) oppositely oriented；
Described first fan blade (1) is contained in the first sleeve (4), or described first fan blade (1) is arranged on described first sleeve
(4) on port；
It is arranged with the second sleeve (5) outside described first sleeve (4)；
Described second fan blade (3) is contained in the air channel (14) between described first sleeve (4) and the second sleeve (5) Nei, or institute
State the second fan blade (3) to be arranged on the port of described air channel (14).
The blower fan structure forming artificial spout the most according to claim 1, it is characterised in that described air channel (14)
Cross-sectional area becomes larger to air outlet from air inlet.
The blower fan structure forming artificial spout the most according to claim 2, it is characterised in that described first sleeve (4)
Sidewall longitudinal section be serpentine.
4. according to the blower fan structure of the formed artificial spout described in claims 1 to 3 any claim, it is characterised in that
The external end edge of described first fan blade (2) connects has the first lasso (6), described second fan blade (3) to be connected to described first lasso (6)
On；Described first lasso (6) can connect the osculum of described first sleeve (4) rotationally；
Described second housing supports is arranged on the spaced support member of polylith (41), and each described support member (41) is arranged on institute
State on the outer wall of the first sleeve (4).
The blower fan structure forming artificial spout the most according to claim 4, it is characterised in that described first sleeve (4)
Upper port area less than the lower port area of described first sleeve (4).
The blower fan structure forming artificial spout the most according to claim 5, it is characterised in that described second sleeve (5)
Height less than the height of described first sleeve (4), and described second sleeve (5) is set in the upper of described first sleeve (4)
Outside portion.
The blower fan structure forming artificial spout the most according to claim 5, it is characterised in that described first sleeve (4)
Cone angle be 60～120 °.
The blower fan structure forming artificial spout the most according to claim 4, it is characterised in that described first sleeve (4)
And it being additionally provided with intermediate sleeve (7) between described second sleeve (5), described intermediate sleeve (7) is contained in described air channel (14) also
It is positioned at the lower section of described second fan blade (3)；
The first air outlet (81), described first set is formed between the lower port of described second sleeve (5) and described intermediate sleeve (7)
The second air outlet (82) is formed between cylinder (4) and the lower port of described intermediate sleeve (7)；
The air supply direction of described second air outlet (82) is relative less than described first air outlet (81) relative to the angle β of plumb line
Angle α in plumb line.
The blower fan structure forming artificial spout the most according to claim 8, it is characterised in that described angle α be 30～
60 °, described angle β is 20～50 °, and described alpha-beta is 5～10 °.
The blower fan structure forming artificial spout the most according to claim 9, it is characterised in that described second sleeve
(5) upper port area is less than the lower port area of described second sleeve (5), and the height of described second sleeve (5) is more than
Described first sleeve (4) and the height of described intermediate sleeve (7).
11. range hoods using the tornado device as described in claim 1 to 10 any claim, it is characterised in that institute
State the first sleeve (4) and connect spiral case (91) entrance or the smoke collecting chamber entrance of range hood；The updraft of described first fan blade (2),
Described second fan blade (3) is dried downwards.
12. range hoods according to claim 11, it is characterised in that described spiral case (91) entrance or described smoke collecting chamber enter
Mouth has branch sleeve (9) with being connected between described first sleeve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610586966.7A CN106225033B (en) | 2016-07-22 | 2016-07-22 | A kind of blower fan structure and range hood forming artificial spout |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610586966.7A CN106225033B (en) | 2016-07-22 | 2016-07-22 | A kind of blower fan structure and range hood forming artificial spout |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106225033A true CN106225033A (en) | 2016-12-14 |
| CN106225033B CN106225033B (en) | 2018-11-06 |
Family
ID=57531504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610586966.7A Active CN106225033B (en) | 2016-07-22 | 2016-07-22 | A kind of blower fan structure and range hood forming artificial spout |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106225033B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594834A (en) * | 2016-12-23 | 2017-04-26 | 宁波方太厨具有限公司 | Rotational flow assisting device of extractor hood |
| CN110006623A (en) * | 2019-05-23 | 2019-07-12 | 重庆大学 | The two-in-one simulator of cyclone, downburst and its analogy method |
| CN110454830A (en) * | 2019-08-02 | 2019-11-15 | 华帝股份有限公司 | Air suction and exhaust device |
| CN110657109A (en) * | 2019-09-23 | 2020-01-07 | 江南造船(集团)有限责任公司 | Fan capable of generating spiral wind |
| CN114309893A (en) * | 2022-01-12 | 2022-04-12 | 江西瑞升科技股份有限公司 | Digital contravariant gas shielded welding machine |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5877198A (en) * | 1981-10-30 | 1983-05-10 | Kiyoto Matsuhashi | Blower |
| DE3236353A1 (en) * | 1982-10-01 | 1984-04-05 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Fan drive, in particular for an extractor hood |
| CN1172217A (en) * | 1996-06-14 | 1998-02-04 | Smc美蚬贸易公司 | Low drag fan assembly |
| JP2001020893A (en) * | 1999-07-05 | 2001-01-23 | Leben Co Ltd | Ventilator |
| CN201027680Y (en) * | 2007-03-26 | 2008-02-27 | 周征 | Bidirectional fresh air blower |
| CN201159494Y (en) * | 2008-01-12 | 2008-12-03 | 鞠俊 | Axial flow type series connection multifunctional fume exhauster |
| CN203785038U (en) * | 2014-03-27 | 2014-08-20 | 宁波方太厨具有限公司 | Range hood with double fans connected in series |
| CN104654403A (en) * | 2013-11-20 | 2015-05-27 | 顾逸民 | Cross-flow fan bi-directional rotating oil fume separation device of integrated cooker |
| CN205979942U (en) * | 2016-07-22 | 2017-02-22 | 宁波方太厨具有限公司 | Can form fan structure and range hood of artificial tornado |
-
2016
- 2016-07-22 CN CN201610586966.7A patent/CN106225033B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5877198A (en) * | 1981-10-30 | 1983-05-10 | Kiyoto Matsuhashi | Blower |
| DE3236353A1 (en) * | 1982-10-01 | 1984-04-05 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Fan drive, in particular for an extractor hood |
| CN1172217A (en) * | 1996-06-14 | 1998-02-04 | Smc美蚬贸易公司 | Low drag fan assembly |
| JP2001020893A (en) * | 1999-07-05 | 2001-01-23 | Leben Co Ltd | Ventilator |
| CN201027680Y (en) * | 2007-03-26 | 2008-02-27 | 周征 | Bidirectional fresh air blower |
| CN201159494Y (en) * | 2008-01-12 | 2008-12-03 | 鞠俊 | Axial flow type series connection multifunctional fume exhauster |
| CN104654403A (en) * | 2013-11-20 | 2015-05-27 | 顾逸民 | Cross-flow fan bi-directional rotating oil fume separation device of integrated cooker |
| CN203785038U (en) * | 2014-03-27 | 2014-08-20 | 宁波方太厨具有限公司 | Range hood with double fans connected in series |
| CN205979942U (en) * | 2016-07-22 | 2017-02-22 | 宁波方太厨具有限公司 | Can form fan structure and range hood of artificial tornado |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594834A (en) * | 2016-12-23 | 2017-04-26 | 宁波方太厨具有限公司 | Rotational flow assisting device of extractor hood |
| CN106594834B (en) * | 2016-12-23 | 2019-08-23 | 宁波方太厨具有限公司 | A kind of eddy flow auxiliary device of range hood |
| CN110006623A (en) * | 2019-05-23 | 2019-07-12 | 重庆大学 | The two-in-one simulator of cyclone, downburst and its analogy method |
| CN110006623B (en) * | 2019-05-23 | 2024-02-02 | 重庆大学 | Tornado and downburst two-in-one simulation device and simulation method thereof |
| CN110454830A (en) * | 2019-08-02 | 2019-11-15 | 华帝股份有限公司 | Air suction and exhaust device |
| CN110657109A (en) * | 2019-09-23 | 2020-01-07 | 江南造船(集团)有限责任公司 | Fan capable of generating spiral wind |
| CN114309893A (en) * | 2022-01-12 | 2022-04-12 | 江西瑞升科技股份有限公司 | Digital contravariant gas shielded welding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106225033B (en) | 2018-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106225033B (en) | A kind of blower fan structure and range hood forming artificial spout | |
| CN205979942U (en) | Can form fan structure and range hood of artificial tornado | |
| CN1113193C (en) | Cooking bonnet type exhausting fan | |
| CN105180238B (en) | A kind of cyclone range hood for revolving curtain formula | |
| WO2018094788A1 (en) | Range hood | |
| CN108194953A (en) | A kind of two-chamber kitchen ventilator with air curtain | |
| CN106051866B (en) | A kind of wind turbine and range hood forming artificial spout | |
| CN205505131U (en) | Help and inhale range hood | |
| CN207471639U (en) | A kind of range hood | |
| CN206291282U (en) | A kind of range hood | |
| CN206001562U (en) | A kind of blower fan for forming artificial spout and range hood | |
| CN109595630A (en) | A kind of range hood | |
| CN106439964B (en) | A kind of range hood | |
| CN209445454U (en) | A kind of range hood | |
| CN207230683U (en) | A kind of range hood | |
| TWI629438B (en) | Kitchen cooking equipment with range hood | |
| CN109595641A (en) | A kind of range hood | |
| CN208547015U (en) | Kitchen ventilator | |
| CN106642261B (en) | A kind of range hood property regulation device and application have the range hood of the device | |
| CN106765393A (en) | A kind of range hood | |
| CN108105816A (en) | A kind of side extraction cooking fume extractor | |
| CN206222429U (en) | One kind rotation sucking kitchen ventilator | |
| CN207214200U (en) | A kind of range hood | |
| CN207230685U (en) | A kind of range hood | |
| CN207674519U (en) | A kind of noise reduction guiding device and application have the range hood of the noise reduction guiding device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |