CN112448530A - Switched reluctance motor with shock-absorbing function - Google Patents
Switched reluctance motor with shock-absorbing function Download PDFInfo
- Publication number
- CN112448530A CN112448530A CN201910801758.8A CN201910801758A CN112448530A CN 112448530 A CN112448530 A CN 112448530A CN 201910801758 A CN201910801758 A CN 201910801758A CN 112448530 A CN112448530 A CN 112448530A
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- Prior art keywords
- motor
- shell
- shock absorption
- bearing seat
- improved
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention discloses a switched reluctance motor with a shock absorption function, which comprises a sound absorption material layer, a rotating shaft, a shell, a water jacket, a telescopic device and a shock absorption material layer, wherein the sound absorption material layer is arranged for absorbing noise generated in the working process of the motor, so that the environment pollution caused by overlarge noise is avoided, the practicability of the motor is improved, the rotating shaft is used for rotating to drive fan blades to rotate to radiate the motor, the heat in the water jacket is heated by utilizing the heat on the surface of the shell, the full utilization of the heat is realized, the practicability of the motor is improved, meanwhile, the water enters the water jacket through a water inlet pipe, the water heated in the water jacket is discharged through a water outlet pipe, the circulating flow of the water in the water jacket is realized, the temperature reduction of the motor is realized, the practicability of the motor is improved, and the shock absorption material layer is arranged for absorbing shock generated in the working process of, avoid shaking too big and cause the damage to motor itself, improved the practicality of equipment.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a switched reluctance motor with a damping function.
Background
The switched reluctance motor is a latest generation stepless speed regulating system developed after a variable frequency speed regulating system and a brushless direct current motor speed regulating system, and is an optical, mechanical and electrical integration high and new technology integrating modern microelectronic technology, digital technology, power electronic technology, infrared photoelectric technology, modern electromagnetic theory, design and manufacturing technology. Nowadays, the application and development of the switched reluctance motor are obviously improved, and the switched reluctance motor is successfully applied to various fields such as electric vehicle drive, general industry, household appliances, textile machinery and the like, the power range is from 10W to 5MW, and the maximum speed is as high as 100,000 r/min;
the current switched reluctance motor can produce certain noise pollution in the use, the motor can produce a large amount of heats simultaneously in the course of the work, the long-time high temperature can reduce the life of motor, the heat that the motor during operation produced generally directly gives off in the air simultaneously, thermal waste has been caused, the motor can produce vibrations at the during operation, vibrations are too big to cause the damage to motor itself, the motor during operation can lead to the motor to take place to remove because the reason of vibrations simultaneously, influence the normal use of motor.
Disclosure of Invention
The present invention aims to overcome the above-mentioned shortcomings and provide a technical solution to solve the above-mentioned problems.
A switched reluctance motor with a damping function comprises a shell, a first bearing seat, a rotating shaft, a telescopic device, a damping fixing seat, a supporting rod and a second bearing seat, wherein the first bearing seat and the second bearing seat are arranged inside the shell, the first bearing seat and the second bearing seat are fixedly arranged at the bottom of the inner side of the shell through the supporting rod respectively, the rotating shaft is rotatably arranged in the shell through the first bearing seat and the second bearing seat, the telescopic device is arranged at the bottom of the shell and comprises a hydraulic cylinder and a hydraulic rod, the hydraulic cylinder is fixedly arranged at the bottom of the shell through bolts, the hydraulic cylinder is hydraulically connected with the hydraulic rod, the damping fixing seat is arranged at the bottom of the hydraulic rod and comprises a locking bolt, a second screw rod, a second threaded groove, a fastener, a top plate, a damping material layer, a bottom plate, a supporting column and, the bottom of second screw rod is connected to second screw thread recess internal thread, second screw rod top fixed mounting is in the hydraulic stem bottom, the roof below is provided with the bottom plate, be provided with the shock-absorbing material layer between bottom plate and the roof, roof and bottom plate both sides are provided with the fastener respectively, roof, bottom plate and fastener correspond the position and have been offered respectively and be used for with locking bolt screw thread through-hole, there is the rubber bottom plate bottom the bottom plate through support column fixed mounting. The end face of one end, located at the output shaft of the motor, of the shell is welded with an annular baffle around the output shaft, a plurality of conical silencing holes are formed in the surface of the annular baffle, and when the output shaft is protected by the annular baffle, the silencing holes can eliminate noises generated by the connection of the output shaft with a coupler and the operation of the output shaft; the utility model discloses a motor, including casing, pivot fixed mounting has the rotor, be provided with the insulating layer between the rotor core of rotor and the pivot, the inboard top of casing and bottom fixed mounting have the stator, the laminating of shells inner wall has the one deck to inhale the sound material layer.
As a further scheme of the invention: and a plurality of radiating fins are fixedly arranged at the top and the bottom of the shell.
As a further scheme of the invention: the casing is stretched out to the one end of pivot, has seted up a plurality of first thread groove on the other end of pivot, first thread groove female connection has the bottom of first screw rod, the top fixed mounting of first screw rod has the flabellum.
As a further scheme of the invention: a dust filter screen is arranged between the top and the bottom of the first bearing seat and the top and the bottom of the inner side of the shell respectively, and a plurality of air inlet through holes are formed in the right side of the shell.
As a further scheme of the invention: and heat dissipation convex ribs are formed on the outer surface of the shock absorption fixing seat.
Compared with the prior art, the invention has the beneficial effects that: the utility model has the advantages of avoiding the pollution to the environment due to the excessive noise by arranging the sound absorption material layer for absorbing the noise generated in the working process of the equipment, improving the practicability of the equipment, utilizing the rotation of the rotating shaft to drive the fan blade to rotate for radiating the heat of the motor, avoiding the reduction of the service life of the motor due to the overhigh temperature of the motor, improving the practicability of the equipment, simultaneously realizing the fixation of the fan blade on the rotating shaft by the threaded connection of the first screw rod and the first threaded groove, being convenient for installation and disassembly, improving the practicability of the equipment, avoiding the pollution to the rotor and the stator due to the dust in the air by arranging the dust filter screen for filtering the air entering the shell through the air inlet through hole, improving the practicability of the equipment, utilizing the heat on the surface of the shell to heat the water in the water jacket, realizing the full utilization of the heat, and improving the practicability of the equipment, meanwhile, water enters the water jacket through the water inlet pipe, the water heated in the water jacket is discharged through the water outlet pipe, the circulating flow of the water in the water jacket is realized, the cooling of the equipment is further realized, the practicability of the equipment is improved, the heat dissipation area of the shell is improved by arranging the heat dissipation fins, the heat dissipation effect and speed of the shell are further improved, the practicability of the equipment is improved, the universal wheels are arranged to facilitate the movement of the equipment, the practicability of the equipment is improved, the damping material layer is arranged to absorb the vibration generated in the working process of the motor, the damage to the motor due to the excessive vibration is avoided, the practicability of the equipment is improved, the friction force between the motor and the ground is improved by arranging the rubber bottom plate, the fixing effect of the motor is improved, the motor is prevented from moving due to the self vibration during the working, and the normal work of the motor is further influenced, the practicability of the equipment is further improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a schematic structural view of the shock-absorbing fixing seat.
In the figure: the heat dissipation device comprises a shell 1, heat dissipation fins 2, a water inlet pipe 3, a stator 4, a water jacket 5, a first bearing seat 6, a sound absorption material layer 7, a dust filter screen 8, an air inlet through hole 9, fan blades 10, a first screw rod 11, a rotating shaft 12, a first threaded groove 13, a supporting leg 14, a universal wheel 15, a water outlet pipe 16, a telescopic device 17, a shock absorption fixing seat 18, a hydraulic cylinder 19, a first supporting rod 20, an insulating layer 21, a hydraulic rod 22, a second bearing seat 23, a rotor 24, a second supporting rod 25, a locking bolt 26, a second screw rod 27, a second threaded groove 28, a fastener 29, a top plate 30, a shock absorption material layer 31, a bottom plate 32, a supporting column 33, a rubber bottom plate 34, an annular groove 35, an annular baffle 36.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, in an embodiment of the present invention, a switched reluctance motor with a damping function includes a housing 1, a heat dissipating fin 2, a water inlet pipe 3, a stator 4, a water jacket 5, a first bearing block 6, a dust filter screen 8, an air inlet through hole 9, a fan blade 10, a first screw 11, a rotating shaft 12, a first threaded groove 13, a support leg 14, a universal wheel 15, a water outlet pipe 16, a telescopic device 17, a damping fixing seat 18, a support rod 20, an insulating layer 21, a second bearing block 23, a rotor 24, and an annular groove 25, the first bearing block 6 and the second bearing block 23 are disposed inside the housing 1, the first bearing block 6 and the second bearing block 23 are respectively and fixedly mounted at the bottom of the inner side of the housing 1 through the support rod 20, the rotating shaft 12 is rotatably mounted in the housing 1 through the first bearing block 6 and the second, an insulating layer 21 is arranged between a rotor iron core of the rotor 24 and the rotating shaft 12, the insulating layer 21 plays an insulating role between the rotor iron core and the rotating shaft 12, stators 4 are fixedly arranged at the top and the bottom of the inner side of the shell 1, a sound absorbing material layer 7 is attached to the inner wall of the shell 1, and the sound absorbing material layer 7 is arranged to absorb noise generated in the working process of equipment, so that environmental pollution caused by overlarge noise is avoided, and the practicability of the equipment is improved; one end of the rotating shaft 12 extends out of the shell 1, a plurality of first threaded grooves 13 are formed in the other end of the rotating shaft 12, the first threaded grooves 13 are in threaded connection with the bottom end of the first screw 11, fan blades 10 are fixedly mounted at the top end of the first screw 11, the rotating shaft 12 is utilized to rotate so as to drive the fan blades 10 to rotate to radiate heat of the motor, the problem that the service life of the motor is shortened due to overhigh temperature of the motor is avoided, the practicability of equipment is improved, meanwhile, the fan blades 10 are fixed on the rotating shaft 12 through the threaded connection of the first screw 11 and the first threaded grooves 13, the installation and disassembly are convenient, the practicability of the equipment is improved, a dust filter screen 8 is respectively arranged between the top and the bottom of the first bearing seat 6 and the top and the bottom of the inner side of the shell 1, a plurality of air inlet through holes 9 are formed in the right side of the shell 1, and the dust filter screen 8 is used, the pollution of dust in the air to the rotor 24 and the stator 4 is avoided, and the practicability of the equipment is improved;
the shell 1 is provided with an annular groove 25, the outer side of the annular groove 25 is sleeved with a water jacket 5, the water inlet of the water jacket 5 is connected with one end of a water inlet pipe 3, the water outlet of the water jacket 5 is connected with one end of a water outlet pipe 16, the water in the water jacket 5 is heated by utilizing the heat on the surface of the shell 1, the full utilization of the heat is further realized, the practicability of the equipment is improved, meanwhile, the water enters the water jacket 5 through the water inlet pipe 3, the water heated in the water jacket 5 is discharged through the water outlet pipe 16, the circulating flow of the water in the water jacket 5 is realized, the temperature reduction of the equipment is realized, the practicability of the equipment is improved, the top and the bottom of the shell 1 are fixedly provided with a plurality of radiating fins 2, the radiating area of the shell 1 is improved by arranging the radiating fins 2, the radiating effect and the speed of the radiation of the shell 1 are further improved, the practicability of, the universal wheel 15 is installed to supporting leg 14 bottom, is used for making things convenient for the removal of equipment through setting up universal wheel 15, has improved the practicality of equipment, the surface of shock attenuation fixing base (18) takes shape to have the protruding stupefied 38 of heat dissipation. The bottom of the shell 1 is provided with a telescopic device 17, the telescopic device 17 comprises a hydraulic cylinder 19 and a hydraulic rod 22, the hydraulic cylinder 19 is fixedly installed at the bottom of the shell 1 through bolts, and the hydraulic cylinder 19 is hydraulically connected with the hydraulic rod 22;
the hydraulic stem 22 bottom is provided with shock attenuation fixing base 18, shock attenuation fixing base 18 includes locking bolt 26, second screw 27, second screw thread recess 28, fastener 29, roof 30, shock-absorbing material layer 31, bottom plate 32, support column 33 and rubber bottom plate 34, second screw thread recess 28 has been seted up on the roof 30, second screw thread recess 28 female connection has the bottom of second screw 27, second screw 27 top fixed mounting is in hydraulic stem 22 bottom, roof 30 below is provided with bottom plate 32, be provided with shock-absorbing material layer 31 between bottom plate 32 and the roof 30, be used for absorbing the vibrations that produce in the motor working process through setting up shock-absorbing material layer 31, avoid vibrations too big to cause the damage to motor itself, improved the practicality of equipment, roof 30 and bottom plate 32 both sides are provided with fastener 29 respectively, roof 30, Bottom plate 32 and fastener 29 correspond the position and have been offered respectively and be used for with 26 screw thread through-holes of locking bolt, be used for making roof 30 and bottom plate 32 together fixed through setting up locking bolt 26, there is rubber bottom plate 34 bottom plate 32 through support column 33 fixed mounting, when needs fix the motor, utilize pneumatic cylinder 19 to drive hydraulic stem 22 and move down and then make rubber bottom plate 34 and ground contact, improved the frictional force between motor and the ground through setting up rubber bottom plate 34, improved the fixed effect of motor, avoid the motor to move because self vibrations take place at the during operation, and then influence the normal work of motor, the practicality of equipment has further been improved.
The working principle of the invention is as follows: the insulating layer 21 is arranged between the rotor iron core and the rotating shaft 12 to play an insulating role, the sound absorbing material layer 7 is arranged to absorb noise generated in the working process of the equipment, the environmental pollution caused by excessive noise is avoided, the practicability of the equipment is improved, the rotating shaft 12 is used for rotating and then driving the fan blade 10 to rotate to radiate the heat of the motor, the service life of the motor is prevented from being reduced due to overhigh temperature of the motor, the practicability of the equipment is improved, meanwhile, the fan blade 10 is fixed on the rotating shaft 12 through the threaded connection of the first screw rod 11 and the first threaded groove 13, the installation and the disassembly are convenient, the practicability of the equipment is improved, the dust filter screen 8 is arranged to filter air entering the shell 1 through the air inlet through hole 9, the pollution of dust in the air to the rotor 24 and the stator 4 is avoided, and the practicability of the equipment is improved, the water in the water jacket 5 is heated by utilizing the heat on the surface of the shell 1, the full utilization of the heat is realized, the practicability of the equipment is improved, meanwhile, the water enters the water jacket 5 through the water inlet pipe 3, the heated water in the water jacket 5 is discharged through the water outlet pipe 16, the circulating flow of the water in the water jacket 5 is realized, the temperature reduction of the equipment is realized, the practicability of the equipment is improved, the heat dissipation area of the shell 1 is improved by arranging the heat dissipation fins 2, the heat dissipation effect and the speed of the shell 1 are further improved, the practicability of the equipment is improved, the universal wheels 15 are arranged for facilitating the movement of the equipment, the practicability of the equipment is improved, the damping material layer 31 is arranged for absorbing the vibration generated in the working process of the motor, the damage to the motor is avoided due to the excessive vibration, the practicability of the equipment is improved, when the motor needs to be fixed, the hydraulic cylinder 19 is utilized for driving the liquid 22 to move downwards so as to enable the rubber bottom plate 34 to be contacted, the friction force between the motor and the ground is improved by arranging the rubber bottom plate 34, the fixing effect of the motor is improved, the motor is prevented from moving due to self vibration during working, the normal work of the motor is further influenced, and the practicability of the equipment is further improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. A switched reluctance motor with a damping function comprises a shell (1), a first bearing seat (6), a rotating shaft (12), a telescopic device (17), a damping fixing seat (18), a supporting rod (20) and a second bearing seat (23), and is characterized in that the first bearing seat (6) and the second bearing seat (23) are arranged inside the shell (1), the first bearing seat (6) and the second bearing seat (23) are fixedly installed at the bottom of the inner side of the shell (1) through the supporting rod (20), the rotating shaft (12) is rotatably installed in the shell (1) through the first bearing seat (6) and the second bearing seat (23), the telescopic device (17) is arranged at the bottom of the shell (1), the telescopic device (17) comprises a hydraulic cylinder (19) and a hydraulic rod (22), and the hydraulic cylinder (19) is fixedly installed at the bottom of the shell (1) through bolts, the hydraulic cylinder (19) is hydraulically connected with a hydraulic rod (22), a shock absorption fixing seat (18) is arranged at the bottom of the hydraulic rod (22), the shock absorption fixing seat (18) comprises a locking bolt (26), a second screw rod (27), a second thread groove (28), a fastener (29), a top plate (30), a shock absorption material layer (31), a bottom plate (32), a supporting column (33) and a rubber bottom plate (34), the top plate (30) is provided with the second thread groove (28), the second thread groove (28) is in internal thread connection with the bottom end of the second screw rod (27), the top end of the second screw rod (27) is fixedly installed at the bottom of the hydraulic rod (22), the bottom plate (32) is arranged below the top plate (30), the shock absorption material layer (31) is arranged between the bottom plate (32) and the top plate (30), and the fasteners (29) are respectively arranged on two sides of the top plate, the top plate (30), the bottom plate (32) and the fastener (29) are respectively provided with a threaded through hole for being matched with a locking bolt (26), and the bottom of the bottom plate (32) is fixedly provided with a rubber bottom plate (34) through a supporting column (33); an annular baffle plate (36) is welded on the end face, located at one end of the output shaft of the motor, of the shell (1) around the output shaft, a plurality of conical silencing holes (37) are formed in the surface of the annular baffle plate (36), and when the output shaft is protected by the annular baffle plate (36), the silencing holes (37) can eliminate noises generated by the connection of the output shaft and a coupler of the output shaft and the operation of the output shaft; pivot (12) fixed mounting has rotor (24), be provided with insulating layer (21) between the rotor core of rotor (24) and pivot (12), casing (1) inboard top and bottom fixed mounting have stator (4), casing (1) inner wall laminating has one deck sound absorbing material layer (7).
2. The switched reluctance motor with a shock absorption function according to claim 1, wherein a plurality of heat dissipation fins (2) are fixedly installed at the top and bottom of the housing (1).
3. The switched reluctance motor with the shock absorption function according to claim 1, wherein one end of the rotating shaft (12) extends out of the housing (1), the other end of the rotating shaft (12) is provided with a plurality of first threaded grooves (13), the first threaded grooves (13) are internally threaded with the bottom end of the first screw (11), and the top end of the first screw (11) is fixedly provided with the fan blades (10).
4. The switched reluctance motor with the shock absorption function according to claim 1, wherein a dust filter screen (8) is respectively disposed between the top and the bottom of the first bearing seat (6) and the top and the bottom of the inner side of the housing (1), and a plurality of air inlet through holes (9) are formed in the right side of the housing (1).
5. The switched reluctance motor with a shock absorption function according to claim 1, wherein the shock absorption fixing base (18) has a heat dissipation protrusion (38) formed on an outer surface thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910801758.8A CN112448530A (en) | 2019-08-28 | 2019-08-28 | Switched reluctance motor with shock-absorbing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910801758.8A CN112448530A (en) | 2019-08-28 | 2019-08-28 | Switched reluctance motor with shock-absorbing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112448530A true CN112448530A (en) | 2021-03-05 |
Family
ID=74742316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910801758.8A Withdrawn CN112448530A (en) | 2019-08-28 | 2019-08-28 | Switched reluctance motor with shock-absorbing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112448530A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114603532A (en) * | 2022-03-09 | 2022-06-10 | 苏州江创智能科技有限公司 | Pipeline robot communication transceiver |
| CN115133713A (en) * | 2022-08-30 | 2022-09-30 | 中山市启胜电器有限公司 | Motor capable of cooling in self-circulation mode |
-
2019
- 2019-08-28 CN CN201910801758.8A patent/CN112448530A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114603532A (en) * | 2022-03-09 | 2022-06-10 | 苏州江创智能科技有限公司 | Pipeline robot communication transceiver |
| CN115133713A (en) * | 2022-08-30 | 2022-09-30 | 中山市启胜电器有限公司 | Motor capable of cooling in self-circulation mode |
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| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
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Application publication date: 20210305 |