CN207021783U - The motor of the stator core of each phase salient pole centralized arrangement and each phase salient pole centralized arrangement - Google Patents
The motor of the stator core of each phase salient pole centralized arrangement and each phase salient pole centralized arrangement Download PDFInfo
- Publication number
- CN207021783U CN207021783U CN201720871843.8U CN201720871843U CN207021783U CN 207021783 U CN207021783 U CN 207021783U CN 201720871843 U CN201720871843 U CN 201720871843U CN 207021783 U CN207021783 U CN 207021783U
- Authority
- CN
- China
- Prior art keywords
- salient pole
- phase
- group
- stator core
- centralized arrangement
- 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.)
- Active
Links
Abstract
The utility model discloses the stator core of each phase salient pole centralized arrangement and the motor of each phase salient pole centralized arrangement, belong to machine field.The salient pole of the stator core divides q phase n groups to arrange, every group per mutually having a z salient pole and the adjacent centralized arrangement of z salient pole, wherein q, n, z are natural number, and q >=2, z >=2；Order of placement of the salient pole on the circumferencial direction of stator core be the 1st group of salient pole, the 2nd group of salient pole ..., n-th group salient pole, the order of placement of the salient pole in every group is the 1st phase salient pole, the 2nd phase salient pole ..., q phase salient poles.The motor is the motor for the stator core for employing above-mentioned each phase salient pole centralized arrangement.The utility model is by that by the salient pole centralized arrangement of each phase in stator core, can simplify split-phase wiring work and reduce alternate mutual inductance.
Description
【Technical field】
It the utility model is related to machine field, more particularly to the stator core of each phase salient pole centralized arrangement and each phase salient pole collection
The motor of middle arrangement.
【Background technology】
Existing each phase salient pole of motor is all interlaced arrangement, i.e., a pair of pole coils certainty and another phase of any phase
A pair of pole coils intersect, the also not design on each phase salient pole centralized arrangement of existing design of electrical motor theory.For permanent magnetism
Motor or switched reluctance machines, the pole coil of interlaced arrangement can all cause split-phase wiring work complex.Especially for
Switched reluctance machines, each phase salient pole interlaced arrangement, yoke portion are common magnetic circuit, and during single-phase energization, alternate mutual inductance is weaker, now magnetic linkage
Relatively simple, control calculating is also relatively easy, and when commutation, two-phase has overlapping working region, and two-phase needs to share yoke portion magnetic circuit
And exchange using salient pole magnetic circuit, now just produce than more serious alternate mutual inductance, cause magnetic field extreme complicated difficult accurately to calculate,
And then cause control strategy complicated.It is that existing motor is badly in need of accordingly, it is capable to which a kind of motor of each phase salient pole centralized arrangement can not be designed
The technical problem of solution.
【Utility model content】
In order to improve the deficiencies in the prior art, the purpose of this utility model is to provide a kind of determining for each phase salient pole centralized arrangement
Sub- iron core and a kind of motor of each phase salient pole centralized arrangement, the motor can simplify split-phase wiring by salient pole centralized arrangement and work
And reduce alternate mutual inductance.
The utility model is to solve the technical scheme that uses of its technical problem：
A kind of stator core of each phase salient pole centralized arrangement, the salient pole of the stator core divide q phase n groups to arrange, every group per phase
There is a z salient pole and the adjacent centralized arrangement of z salient pole, wherein q, n, z are natural number, and q >=2, z >=2；The salient pole is in stator
Order of placement on the circumferencial direction of iron core is the 1st group of salient pole, the 2nd group of salient pole ..., n-th group salient pole, the cloth of the salient pole in every group
Put order for the 1st phase salient pole, the 2nd phase salient pole ..., q phase salient poles.
Applied to the number of phases it is q such as by said stator iron core, rotor iron core salient pole number is, then excellent in y switched reluctance machines
Selection of land, rotor iron core salient pole number y are y=n (qz+1), number of phases q >=3, and it is highly preferred that every group per phase between adjacent salient pole
Angle be A=360/y, adjacent mutually alternate mechanical angle is B=360/nq.
Applied to the number of phases it is q such as by said stator iron core, rotor core number of magnetic poles is y magneto, then preferably, turns
Sub- iron core magnetic number of poles y is that y=n (qz+1) and y take even number, and it is highly preferred that every group per phase in angle between adjacent salient pole
It is A=360/y, adjacent mutually alternate mechanical angle is B=360/nq.
Preferably, in said stator iron core, the packet count n of salient pole is even number, and purpose makes each phase separation torque symmetrical.
Preferably, in said stator iron core, every group of salient pole number z=2 per phase, purpose make each phase winding coiling number of poles compared with
It is few simpler.
The utility model also protects the motor using said stator iron core as chief component, and the species of motor can be with
For switched reluctance machines or magneto, the motor includes stator core, rotor core and winding, and the stator core is each
The stator core of phase salient pole centralized arrangement, the salient pole of the stator core divide q phase n groups to arrange, every group often mutually has z salient pole and z
The adjacent centralized arrangement of individual salient pole, wherein q, n, z are natural number, and q >=2, z >=2；The salient pole is in the circumference side of stator core
Upward order of placement be the 1st group of salient pole, the 2nd group of salient pole ..., n-th group salient pole, the order of placement of the salient pole in every group is the 1st
Phase salient pole, the 2nd phase salient pole ..., q phase salient poles；The winding is concentrated around on every group of every phase salient pole of stator core respectively.
When above-mentioned motor is switched reluctance machines, it is assumed that rotor iron core salient pole number is y, then y=n (qz+1), q >=3, and
Preferably, the angle between salient pole adjacent in every group of every phase is A=360/y, and adjacent mutually alternate mechanical angle is B=360/
nq。
When above-mentioned motor is magneto, it is assumed that rotor core number of magnetic poles is y, then y=n (qz+1) and y takes even number, often
Angle in the every phase of group between adjacent salient pole is A=360/y, and adjacent mutually alternate mechanical angle is B=360/nq.
When above-mentioned motor is magneto, the stator core is a circular entirety, i.e., with common stator iron
Core is similar, all has public yoke portion between phase and phase.Can also be surrounded by n × q independent single-phase modules it is circular form, mutually with
There is no public yoke portion between phase.
Principle of the present utility model is：By the way that by the salient pole centralized arrangement of each phase, just energy centralized arrangement exists each phase coil
On each phase salient pole, coil does not have to staggeredly between phase and phase, so as to simplify split-phase wiring work.Particularly switching magnetic-resistance electricity
Machine, each phase salient pole centralized arrangement, when two-phase is powered, the salient pole magnetic circuit of each phase itself is respectively mutually used, therefore can substantially reduce
Alternate mutual inductance.
Due to being using above-mentioned technical proposal, the beneficial effects of the utility model：The utility model discloses a kind of each phase
The motor of the stator core of salient pole centralized arrangement and each phase salient pole centralized arrangement, its can simplify split-phase wiring work, particularly pair
Switched reluctance machines can reduce alternate mutual inductance, while it is theoretical to open a kind of new design of electrical motor.
【Brief description of the drawings】
Fig. 1 is a kind of structural representation of the stator core of each phase salient pole centralized arrangement in the utility model.
Fig. 2 is a kind of structural representation of the switched reluctance machines of each phase salient pole centralized arrangement of the present utility model.
Fig. 3 is a kind of structural representation of the magneto of each phase salient pole centralized arrangement of the present utility model.
Fig. 4 is another structural representation of the magneto of each phase salient pole centralized arrangement of the present utility model.
Mark and be meant that in figure：The stator core of each phase salient pole centralized arrangements of 10-, the phase salient poles of 11- the 1st, the phases of 12- the 2nd
Salient pole, the phase salient poles of 13- the 3rd, 20- rotor cores, 30- windings.
【Embodiment】
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below by way of specific embodiment
And with reference to accompanying drawing 1-4, the utility model is further elaborated.It should be appreciated that specific embodiment described herein
Only to explain the utility model, it is not used to limit the utility model.
In order to simplify the alternate mutual inductance of the split-phase wiring of motor work and reduction between phase and phase, the utility model provides
A kind of stator core of each phase salient pole centralized arrangement, its basic principle designed are：Divide the salient pole of stator core to q phase n groups
Arrangement, every group per mutually having a z salient pole and the adjacent centralized arrangement of z salient pole, wherein q, n, z are natural number, and number of phases q >=2, often
Group is per phase salient pole number z >=2；Order of placement of all salient poles on the circumferencial direction of stator core is the 1st group of salient pole, the 2nd group
Salient pole ..., n-th group salient pole, the order of placement of the salient pole in every group is the 1st phase salient pole, the 2nd phase salient pole ..., q phase salient poles.
Seeing Fig. 1, thus it is shown that number of phases q is 3, and packet count n is 2, when every group of every phase salient pole number z is 2, the structure of stator core
Schematic diagram.Its order arranged is to be followed successively by first group of the 1st phase salient pole 11 in the counterclockwise direction (in 2 salient pole Neighbor Sets of the phase
Arrangement), first group of the 2nd phase salient pole 12 (the adjacent centralized arrangement of 2 salient poles of the phase), (phase 2 is convex for first group of the 3rd phase salient pole 13
Extremely adjacent centralized arrangement)；Second group of the 1st phase salient pole 11 (the adjacent centralized arrangement of 2 salient poles of the phase), second group of the 2nd phase salient pole 12
(the adjacent centralized arrangement of 2 salient poles of the phase), second group of the 3rd phase salient pole 13 (the adjacent centralized arrangement of 2 salient poles of the phase).
Applied to the number of phases it is q such as by said stator iron core, rotor iron core salient pole number is, then excellent in y switched reluctance machines
Selection of land, rotor iron core salient pole number y are y=n (qz+1), number of phases q >=3, and it is highly preferred that every group per phase between adjacent salient pole
Angle be A=360/y, adjacent mutually alternate mechanical angle is B=360/nq.Certainly, this is taken for A and B optimization
Value, those skilled in the art can make small change according to gained is calculated.
Applied to the number of phases it is q such as by said stator iron core, rotor core number of magnetic poles is y magneto, then preferably, turns
Sub- iron core magnetic number of poles y is that y=n (qz+1) and y take even number, and it is highly preferred that every group per phase in angle between adjacent salient pole
It is A=360/y, adjacent mutually alternate mechanical angle is B=360/nq.Equally, this is also for the value of A and B optimization, sheet
Art personnel can make small change according to gained is calculated.
The stator core of each phase salient pole centralized arrangement of the present utility model can be applied in switched reluctance machines, the motor bag
Include stator core, rotor core and winding, the salient pole of stator core divides q phase n groups to arrange, every group per mutually having z salient pole and z is individual convex
Extremely adjacent centralized arrangement, wherein q, n, z are natural number, and q >=3, z >=2；All salient poles are on the circumferencial direction of stator core
Order of placement be the 1st group of salient pole, the 2nd group of salient pole ..., n-th group salient pole, the order of placement of the salient pole in every group is mutually convex for the 1st
Pole, the 2nd phase salient pole ..., q phase salient poles；Winding is concentrated around on every group of every phase salient pole respectively.Assuming that rotor iron core salient pole number
For y, then y=n (qz+1), q >=3, and the angle between salient pole adjacent in every group of every phase is A=360/y are adjacent mutually alternate
Mechanical angle is B=360/nq.Using the technical solution of the utility model, during each parameter value difference, the reluctance motor part is real
Example design parameter reference table 1-2, those skilled in the art can design and produce different reluctance motors according to relevant parameter.
Table 1
| Number of phases q | 3 | 3 | 3 | 3 | 3 | 4 | 4 | … |
| Every group of each phase salient pole number z | 2 | 2 | 2 | 3 | 3 | 2 | 2 | … |
| Packet count n | 1 | 2 | 3 | 1 | 2 | 1 | 2 | … |
| Rotor with salient pole number y=n (qz+1) | 7 | 14 | 21 | 10 | 20 | 9 | 18 | … |
| Adjacent salient poles included angle A=360/y | 51.4 | 25.7 | 17.1 | 36.0 | 18.0 | 40.0 | 20.0 | … |
| Alternate mechanical angle B=360/nq | 120.0 | 60.0 | 40.0 | 120.0 | 60.0 | 90.0 | 45.0 | … |
Table 2
| Number of phases q | 3 | 3 | 3 | 4 | 4 | 5 | 5 | … |
| Every group of each phase salient pole number z | 2 | 2 | 2 | 2 | 2 | 2 | 2 | … |
| Packet count n, n are even number | 2 | 4 | 6 | 2 | 4 | 2 | 4 | … |
| Rotor with salient pole number y=n (qz+1) | 14 | 28 | 42 | 18 | 36 | 22 | 44 | … |
| Adjacent salient poles included angle A=360/y | 25.7 | 12.9 | 8.6 | 20.0 | 10.0 | 16.4 | 8.2 | … |
| Alternate mechanical angle B=360/nq | 60.0 | 30.0 | 20.0 | 45.0 | 22.5 | 36.0 | 18.0 | … |
See Fig. 2, thus it is shown that number of phases q is 3, and the salient pole packet count n of stator core 10 is 2, and every group is 2 per phase salient pole number z；
When the salient pole number y of rotor core 20 is 14, the structural representation of reluctance motor, winding 30 is concentrated around every mounted in stator core 10 respectively
On salient pole of the group per phase.Wherein, the salient-pole structure of stator core 10 is same as shown in Figure 1, two salient poles in every group of every phase
Between included angle A be 25.7 °, the alternate mechanical angle B between adjacent two-phase is 60 °.
The stator core of each phase salient pole centralized arrangement of the present utility model can be applied in magneto, and the motor includes fixed
Sub- iron core, rotor core and winding, the salient pole of stator core divide q phase n groups to arrange, every group often mutually has z salient pole and z salient pole phase
Adjacent centralized arrangement, wherein q, n, z are natural number, and q >=2, z >=2；Cloth of all salient poles on the circumferencial direction of stator core
Put order for the 1st group of salient pole, the 2nd group of salient pole ..., n-th group salient pole, the order of placement of the salient pole in every group is the 1st phase salient pole, the
2 phase salient poles ..., q phase salient poles；Winding is concentrated around on every group of every phase salient pole respectively.Assuming that rotor core number of magnetic poles is y,
Then y=n (qz+1) and y take even number, every group per phase in angle between adjacent salient pole be A=360/y, adjacent mutually alternate machine
Tool angle is B=360/nq.Using the technical solution of the utility model, during each parameter value difference, the reluctance motor certain embodiments
Design parameter reference table 3, those skilled in the art can design and produce different magnetoes according to relevant parameter.
Table 3
| Number of phases q | 2 | 2 | 3 | 3 | 4 | … |
| Every group of each phase salient pole number z | 2 | 3 | 2 | 3 | 2 | … |
| Packet count n | 2 | 2 | 2 | 1 | 2 | … |
| Rotor magnetic pole number y=n (qz+1), y are even number | 10 | 14 | 14 | 10 | 18 | … |
| Adjacent salient poles included angle A=360/y | 36 | 25.7 | 25.7 | 36.0 | 20.0 | … |
| Alternate mechanical angle B=360/nq | 90.0 | 90.0 | 60 | 120.0 | 45.0 | … |
See Fig. 3, thus it is shown that number of phases q is 3, and the salient pole packet count n of stator core 10 is 2, and every group is 2 per phase salient pole number z；
When the number of magnetic poles y of rotor core 20 is 14, the structural representation of magneto, winding 30 is concentrated around every mounted in stator core 10 respectively
On salient pole of the group per phase.Wherein, the salient-pole structure of stator core 10 is same as shown in Figure 1, two salient poles in every group of every phase
Between included angle A be 25.7 °, the alternate mechanical angle B between adjacent two-phase is 60 °.
Stator core illustrated above is circular overall situation, i.e., has between phase and phase, between salient pole and salient pole
There is public yoke portion.In magneto, it can also use by n × q independent single-phase modules around forming, i.e., between phase and phase
There is no a stator core 10 in public yoke portion, its structure may be referred to Fig. 4, be connected in figure by yoke portion by 2 salient poles single
Module is single-phase module, the stator core 10 of the magneto, share 6 single-phase modules point, 2 groups of 3 phase in a circumferential direction by
Sequence arranges that the number of magnetic poles of rotor core 20 is 14, and winding 30 is concentrated around on the salient pole of single-phase module, actual production motor
When, several grooves for accommodating single-phase module can be opened up on the circumferencial direction of motor case, single-phase module is fixed on
In groove.
The utility model by by the salient pole centralized arrangement of each phase, each phase coil just can centralized arrangement in each phase salient pole
On, coil does not have to staggeredly between phase and phase, so as to simplify split-phase wiring work.Particularly switched reluctance machines, it is each mutually convex
Pole centralized arrangement, when two-phase is powered, the salient pole magnetic circuit of each phase itself is respectively mutually used, therefore alternate mutual inductance can be substantially reduced.
Described above is only the description of the utility model preferred embodiment, it should be pointed out that limited due to literal expression
Property, and unlimited concrete structure objectively be present, it is new not departing from this practicality for those skilled in the art
On the premise of type principle, some improvement can also be made, these improvement also should be regarded as the scope of protection of the utility model.
Claims (10)
- A kind of 1. stator core of each phase salient pole centralized arrangement, it is characterised in that：The salient pole of the stator core divides q phase n group cloth Put, every group per mutually having a z salient pole and the adjacent centralized arrangement of z salient pole, wherein q, n, z are natural number, and q >=2, z >=2；Institute State order of placement of the salient pole on the circumferencial direction of stator core for the 1st group of salient pole, the 2nd group of salient pole ..., n-th group salient pole, every group The order of placement of interior salient pole be the 1st phase salient pole, the 2nd phase salient pole ..., q phase salient poles.
- 2. the stator core of each phase salient pole centralized arrangement according to claim 1, it is characterised in that：The stator core should Be q for the number of phases, rotor iron core salient pole number is y switched reluctance machines, wherein, y=n (qz+1), q >=3, every group per phase in phase Angle between adjacent salient pole is A=360/y, and adjacent mutually alternate mechanical angle is B=360/nq.
- 3. the stator core of each phase salient pole centralized arrangement according to claim 1, it is characterised in that：The stator core should Be q for the number of phases, rotor core number of magnetic poles is y magneto, wherein, y=n (qz+1) and y take even number, every group per phase in phase Angle between adjacent salient pole is A=360/y, and adjacent mutually alternate mechanical angle is B=360/nq.
- 4. the stator core of each phase salient pole centralized arrangement according to claim 3, it is characterised in that：The stator core is It is made up of n × q independent single-phase modules, i.e., between phase and phase without public yoke portion.
- 5. the stator core of each phase salient pole centralized arrangement according to any one of claim 1-4, it is characterised in that：N is Even number.
- 6. the stator core of each phase salient pole centralized arrangement according to any one of claim 1-4, it is characterised in that：It is described Every group of salient pole number per phase z=2.
- 7. a kind of motor, it is switched reluctance machines or magneto, including stator core, rotor core and winding, its feature It is, the stator core is the stator core of each phase salient pole centralized arrangement, and the salient pole of the stator core divides q phase n groups to arrange, Every group per mutually having a z salient pole and the adjacent centralized arrangement of z salient pole, wherein q, n, z are natural number, and q >=2, z >=2；It is described convex Order of placement of the pole on the circumferencial direction of stator core be the 1st group of salient pole, the 2nd group of salient pole ..., n-th group salient pole, in every group The order of placement of salient pole be the 1st phase salient pole, the 2nd phase salient pole ..., q phase salient poles；The winding is concentrated around mounted in described fixed respectively On sub- every group of salient pole per phase of iron core.
- 8. motor according to claim 7, it is characterised in that：The motor is switched reluctance machines, the rotor core Salient pole number is y, wherein, y=n (qz+1), q >=3, every group is A=360/y per the angle between adjacent salient pole in phase, phase Adjacent mutually alternate mechanical angle is B=360/nq.
- 9. motor according to claim 7, it is characterised in that：The motor is magneto, the rotor core magnetic pole Number is y, wherein, y=n (qz+1) and y take even number, every group per phase in angle between adjacent salient pole be A=360/y, phase Adjacent mutually alternate mechanical angle is B=360/nq.
- 10. motor according to claim 9, it is characterised in that：The stator core is n × q independent single-phase modules Composition, i.e., between phase and phase without public yoke portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720871843.8U CN207021783U (en) | 2017-07-18 | 2017-07-18 | The motor of the stator core of each phase salient pole centralized arrangement and each phase salient pole centralized arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720871843.8U CN207021783U (en) | 2017-07-18 | 2017-07-18 | The motor of the stator core of each phase salient pole centralized arrangement and each phase salient pole centralized arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207021783U true CN207021783U (en) | 2018-02-16 |
Family
ID=61480685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720871843.8U Active CN207021783U (en) | 2017-07-18 | 2017-07-18 | The motor of the stator core of each phase salient pole centralized arrangement and each phase salient pole centralized arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207021783U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019015413A1 (en) * | 2017-07-18 | 2019-01-24 | 深圳华引动力科技有限公司 | Stator core having centrally-arranged salient poles of each phase, and motor having centrally-arranged salient poles of each phase |
-
2017
- 2017-07-18 CN CN201720871843.8U patent/CN207021783U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019015413A1 (en) * | 2017-07-18 | 2019-01-24 | 深圳华引动力科技有限公司 | Stator core having centrally-arranged salient poles of each phase, and motor having centrally-arranged salient poles of each phase |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107171459A (en) | The motor of the stator core of each phase salient pole centralized arrangement and each phase salient pole centralized arrangement | |
| CN107528400A (en) | Rotor, magneto and compressor | |
| CN206807158U (en) | Single phase multi module and single phase multi module combined type switched reluctance machines | |
| CN105811696B (en) | Composite excitation type compound flux switch permanent magnet motor | |
| CN106877607A (en) | Using the winding divergence type bearingless synchronous reluctance motor of Halbach permanent magnet arrays | |
| CN105656228B (en) | A kind of transverse flux permanent magnetic motor | |
| CN105048740A (en) | Permanent magnet and variable reluctance parallel hybrid excitation brushless motor | |
| CN102157993A (en) | Modularized flux switching permanent magnet (FSPM) motor | |
| CN107579636A (en) | A kind of axial block form mixed rotor motor | |
| CN104967271B (en) | The passive rotor transverse magnetic flux monophase machine of Crossed Circle winding | |
| CN104201852A (en) | Winding-complementary permanent magnet rotor magnetic-flux switching motor | |
| CN104052180A (en) | Multiple symmetrical winding magnetic flux switching motor and winding design method thereof | |
| CN104426315A (en) | Three-phase electromagnetic motor | |
| CN202334229U (en) | Stator surface-mounted-type doubly salient permanent magnet motor with complementary winding magnetic circuits | |
| CN106849567A (en) | A kind of flux switch permanent magnet motor of high power density | |
| CN107947511A (en) | The six mutually fault-tolerant permasyn morots without electromagnetic coupled between each phase winding | |
| CN207021783U (en) | The motor of the stator core of each phase salient pole centralized arrangement and each phase salient pole centralized arrangement | |
| CN107040059A (en) | Single phase multi module and single phase multi-stage module combined type switched reluctance machines | |
| CN207200398U (en) | Motor | |
| CN207124493U (en) | Step motor stator and the motor with the stator | |
| CN102403857A (en) | Stator surface-mounted doubly salient permanent-magnet motor with complementary winding magnetic paths | |
| CN206595867U (en) | A kind of three-phase double-iron core double acting position switch reluctance motor | |
| CN102231576B (en) | Self-fault tolerance magnetic flux switching permanent magnet motor | |
| CN103746525A (en) | Stator-module-type hybrid-excitation fault-tolerant motor | |
| CN102611219A (en) | High-reliability half stator-tooth winded stator-surface mounted permanent magnet motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |