CN112803647A - Inner rotor brushless DC motor and oxygen-increasing machine - Google Patents
Inner rotor brushless DC motor and oxygen-increasing machine Download PDFInfo
- Publication number
- CN112803647A CN112803647A CN202110124843.2A CN202110124843A CN112803647A CN 112803647 A CN112803647 A CN 112803647A CN 202110124843 A CN202110124843 A CN 202110124843A CN 112803647 A CN112803647 A CN 112803647A
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- Prior art keywords
- inner rotor
- motor
- rotor brushless
- stator core
- output shaft
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- 238000004804 winding Methods 0.000 claims abstract description 34
- 238000005276 aerator Methods 0.000 claims abstract description 17
- 238000007667 floating Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 8
- 230000004323 axial length Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000006698 induction Effects 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- 230000001133 acceleration Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
- A01K63/042—Introducing gases into the water, e.g. aerators, air pumps
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
-
- 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
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
- H02K2203/12—Machines characterised by the bobbins for supporting the windings
Abstract
The invention discloses an inner rotor brushless direct current motor and an aerator, wherein the inner rotor brushless direct current motor comprises a shell, a stator core, a coil framework, a plurality of winding coils, a rotor core, a permanent magnet and an output shaft; the stator core is arranged in the shell, and the inner side wall of the stator core is provided with a plurality of tooth parts; the coil framework comprises two insulating wire frames, one side of each insulating wire frame, which faces the stator core, is provided with a plurality of convex parts, and the two insulating wire frames are oppositely embedded at the two sides of the stator core; a plurality of winding coils are wound on the coil framework, and each winding coil is respectively penetrated through the two winding grooves of the two insulating wire frames; the rotor core is arranged on the inner side of the stator core. According to the inner rotor brushless direct current motor disclosed by the invention, when the inner rotor brushless direct current motor is applied to an aerator, the whole device has a simpler structure, lighter weight and easiness in maintenance, and the pollution to a fishpond is not easily caused.
Description
Technical Field
The invention relates to the technical field of motors, in particular to an inner rotor brushless direct current motor and an aerator.
Background
At present, with the rapid development of the fish pond culture industry, the oxygen increasing machine is widely applied. However, the conventional aerator drives the impeller to rotate by the induction motor and the reduction gear box, and such an arrangement has the following disadvantages: firstly, the adopted driving structure is complex, the operation noise is high, the weight of the whole device is too heavy, the production cost is high, and the production efficiency is low; secondly, the gear box is not easy to maintain and easy to leak oil, so that the fishpond is polluted; the output power of the structure of the induction motor matched with the gear box is lower, which is not beneficial to saving energy; and fourthly, the aerator can splash huge water splash on the water surface in the operation process, and the splashed water splash can damage the induction motor and the gear box.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the inner rotor brushless direct current motor, when the inner rotor brushless direct current motor is applied to an aerator, the whole device has a simple structure, light weight and easy maintenance, and the pollution to a fish pond is not easy to cause.
The invention also provides an aerator with the inner rotor brushless direct current motor.
An inner rotor brushless dc motor according to an embodiment of a first aspect of the present invention includes: a housing; the stator core is arranged in the shell, a plurality of tooth parts which are uniformly distributed in the circumferential direction are arranged on the inner side wall of the stator core, and a winding slot is formed between every two adjacent tooth parts; the coil framework comprises two insulating wire frames, one side of each insulating wire frame, facing the stator core, is provided with a plurality of protrusions which are uniformly distributed in the circumferential direction, each protrusion is provided with a through groove, a abdicating groove matched with the tooth part is formed between every two adjacent protrusions, and the two insulating wire frames are oppositely embedded on two sides of the stator core; the winding coils are wound on the coil framework, and each winding coil is respectively penetrated through two adjacent winding grooves; a rotor core disposed inside the stator core; the permanent magnet is arranged on the outer wall of the rotor iron core; and the output shaft is rotatably connected with the axis of the rotor core and penetrates through the shell.
The inner rotor brushless direct current motor according to the embodiment of the invention at least has the following beneficial effects: the coil framework is composed of two insulating wire frames, and the insulating wire frames can be directly buckled on the stator core, so that insulating paper does not need to be independently inserted into each winding groove of the stator coil when a winding coil is arranged, the installation of the coil framework is facilitated on one hand, the direct winding by using an automatic winding machine is facilitated on the other hand, and the production efficiency is greatly improved; when the inner rotor brushless direct current motor is applied to an aerator, only the output shaft is connected with the impeller, and the traditional driving structure of an induction motor acceleration and deceleration gear box is replaced, so that the whole device is simpler in structure and lighter in weight, the production cost is reduced, and the production efficiency is improved; meanwhile, because a reduction gear box is omitted, the whole device is easier to maintain, the pollution of the gear box to the fishpond is avoided, and the running noise of the whole device is reduced; in addition, because the motor is the inner rotor structure, splash that the oxygen-increasing machine operation splashes is difficult to enter into the motor inside, just also is difficult to cause the harm to the motor, and life is longer.
According to some embodiments of the invention, the rotor core comprises: the permanent magnet is arranged on the outer wall of the outer ring; the inner ring is provided with a through hole, the output shaft penetrates through the through hole, and the outer ring is connected with the inner ring through a connecting shaft arranged at intervals.
According to some embodiments of the invention, the rotor core is of a flat structure, and the radial length of the rotor core is 5 to 10 times the axial length.
According to some embodiments of the invention, the housing comprises: a housing; the end cover is detachably connected with one side of the shell, one end of the output shaft is rotatably connected with the end cover, and the other end of the output shaft extends out of the shell.
According to some embodiments of the invention, a receiving groove is formed in a side of the housing abutting against the end cap, and a sealing ring is arranged in the receiving groove.
According to some embodiments of the invention, the inner side wall of the end cover is provided with a first step hole, the side wall of the housing opposite to the end cover is provided with a second step hole, the first step hole is internally provided with a first bearing, the second step hole is internally provided with a second bearing, and the output shaft is respectively connected with the first bearing and the second bearing in a rotating manner.
According to some embodiments of the invention, a seal is provided where the output shaft passes through the housing.
According to some embodiments of the invention, the permanent magnet comprises 2N magnetic shoes connected end to end, the material of the magnetic shoes is sintered neodymium iron boron, and N is a positive integer.
According to the second aspect embodiment of the invention, the aerator comprises: an inner rotor brushless dc motor according to the first aspect of the present invention; the controller is electrically connected with the inner rotor brushless direct current motor and is used for controlling the inner rotor brushless direct current motor to work; the impeller is in transmission connection with the output shaft; and the plurality of floating bodies are fixedly connected with the shell.
The aerator provided by the embodiment of the invention at least has the following beneficial effects: the inner rotor brushless direct current motor is adopted to replace a traditional driving structure of an acceleration and deceleration gear box of an induction motor, so that the structure of the whole device is simpler, the whole weight is lighter, and the output power of the inner rotor brushless direct current motor is far greater than that of the acceleration and deceleration gear box of the induction motor, thereby being beneficial to energy conservation; meanwhile, the condition that the reduction gear box is likely to leak oil or be damaged is avoided, and the whole device is more environment-friendly and easy to maintain.
According to some embodiments of the invention, each of the floating bodies is fixedly connected to the housing by a corresponding connecting rod, and a plurality of the floating bodies are arranged in a circumferentially uniform manner.
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
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of an inner rotor brushless dc motor according to an embodiment of the present invention;
fig. 2 is a sectional view of an inner rotor brushless dc motor according to an embodiment of the present invention;
fig. 3 is an exploded view of an inner rotor brushless dc motor according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a stator core according to an embodiment of the present invention;
FIG. 5 is an exploded view of a bobbin of an embodiment of the present invention;
fig. 6 is a schematic view of an overall structure of a stator core and a bobbin according to an embodiment of the present invention;
fig. 7 is a schematic view of an overall structure of a stator core, a bobbin, and a winding coil according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an inner rotor brushless dc motor according to an embodiment of the present invention after a housing is hidden;
fig. 9 and 10 are schematic structural views of rotor cores and permanent magnets from two different viewing angles according to an embodiment of the present invention;
FIG. 11 is a schematic structural view of an aerator according to an embodiment of the present invention;
reference numerals:
the rotor comprises a housing 100, a shell 110, an end cover 120, a first bearing 140, a second bearing 150, a sealing member 160, a stator core 200, a tooth 210, a winding groove 220, an insulating bobbin 300, a protrusion 310, a through groove 311, a relief groove 320, a winding coil 400, a rotor core 500, an outer ring 510, an inner ring 520, a connecting shaft 530, a permanent magnet 600, an output shaft 700, a controller 800, an impeller 900, a floating body 1000, a controller housing 1100, and a connecting rod 1200.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 3, an inner rotor brushless dc motor according to an embodiment of a first aspect of the present invention includes a housing 100, a stator core 200, a bobbin, a plurality of winding coils 400, a rotor core 500, a permanent magnet 600, and an output shaft 700; wherein, the stator core 200 is disposed in the housing 100, as shown in fig. 4, the inner side wall of the stator core 200 is provided with a plurality of teeth 210 uniformly distributed in a circumference, and a winding slot 220 is disposed between every two adjacent teeth 210; as shown in fig. 5 to 7, the bobbin includes two insulating bobbins 300, a plurality of protrusions 310 are uniformly distributed on one side of each insulating bobbin 300 facing the stator core 200, a through groove 311 is formed on each protrusion 310, an abdicating groove 320 adapted to the tooth portion 210 is formed between each two adjacent protrusions 310, and the two insulating bobbins 300 are relatively embedded on two sides of the stator core 200; as shown in fig. 7, a plurality of winding coils 400 are wound on the coil bobbin, and each winding coil 400 is respectively inserted into two winding slots 220 of two insulating bobbins 300; as shown in fig. 8 to 10, the rotor core 500 is disposed inside the stator core 200, and the permanent magnet 600 is disposed on the outer wall of the rotor core 500; the output shaft 700 is rotatably connected to the axial center of the rotor core 500, and the output shaft 700 is inserted into the housing 100.
Specifically, referring to fig. 4 to 7, two insulating wire frames 300 are respectively embedded at two sides of the stator core 200, the two insulating wire frames 300 in mirror image are just spliced into a coil frame, at this time, each tooth 210 of the stator core 200 is just located in the corresponding abdicating slot 320, the through slot 311 on the convex portion 310 and the winding slot 220 of the stator core 200 form a space for a coil to pass through, so as to perform winding, and each winding coil 400 respectively passes through two adjacent winding slots 220 and is sleeved on the coil frame; in the present invention, the total number of the winding slots 220 of the stator core 200 is 3n, and n is a positive integer, which facilitates the arrangement of the three-phase winding coil 400; meanwhile, in order to improve the efficiency of setting the winding coil 400, the traditional mode of independently inserting insulating paper into each winding slot 220 is not adopted, but the insulating wire frame 300 formed by one-time injection molding is adopted, so that the insulating wire frame can be quickly buckled on the stator core 200, the automatic winding machine can be conveniently used for directly winding wires, and the production efficiency is greatly improved. According to the inner rotor brushless direct current motor disclosed by the invention, when the inner rotor brushless direct current motor is applied to an aerator, only the output shaft 700 is connected with the impeller 900, and the traditional driving structure of an acceleration and deceleration gear box of an induction motor is replaced, so that the structure of the whole device is simpler, the production cost is reduced, and the production efficiency is improved; meanwhile, because a reduction gear box is omitted, the whole device is easier to maintain, the pollution of the gear box to the fishpond is avoided, and the running noise of the whole device is reduced; in addition, because the motor is an inner rotor structure, splashed splash is not easy to enter the motor, and the motor is not easy to be damaged.
As shown in fig. 9 and 10, the rotor core 500 includes an outer ring 510 and an inner ring 520, the permanent magnet 600 is disposed on an outer wall of the outer ring 510, a through hole is disposed on the inner ring 520, the output shaft 700 is disposed through the through hole, and the outer ring 510 and the inner ring 520 are connected by a connecting shaft 530 disposed at an interval. By such arrangement, it is convenient to fixedly mount the rotor core 500 and the permanent magnet 600; meanwhile, a through hole is formed between every two adjacent connecting shafts 530, so that the weight of the entire rotor core 500 can be reduced, and the weight of the entire motor can be further reduced.
In the present invention, the rotor core 500 has a flat structure, and the radial length of the rotor core 500 is 5 to 10 times the axial length. As shown in fig. 1, the whole motor is also a flat structure, and the diameter of the rotor core 500 is much larger than that of a common motor, so that the effects of low rotation speed and large torque can be directly achieved, the impeller 900 can be better driven to rotate, the output power of the motor is effectively improved, and the effect of energy saving is achieved. It is understood that the specific ratio of the radial length to the axial length of the rotor core 500 can be adjusted according to actual needs.
As shown in fig. 1, the housing 100 includes a casing 110 and an end cap 120, the end cap 120 is detachably connected to one side of the casing 110, one end of the output shaft 700 is rotatably connected to the end cap 120, and the other end of the output shaft 700 extends out of the casing 110. Specifically, the end cap 120 may be connected to the housing 110 by a screw connection, but may also be riveted, snapped, welded, or the like. The end cap 120 functions to support the output shaft 700 and seal.
In some embodiments of the present invention, a receiving groove is formed at a side of the housing 110 abutting against the end cap 120, and a sealing ring (not shown) is disposed in the receiving groove. Through such setting, can further promote the leakproofness of shell 100, can effectively prevent that the splash that the oxygen-increasing machine splashes in the operation process from entering into the motor inside, avoid causing the harm to the motor, improve the running life of whole device.
As shown in fig. 2, the inner side wall of the end cover 120 is provided with a first stepped hole, the side wall of the housing 110 opposite to the end cover is provided with a second stepped hole, the first stepped hole is provided with the first bearing 140, the second stepped hole is provided with the second bearing 150, and the output shaft 700 is respectively rotatably connected with the first bearing 140 and the second bearing 150. By providing the first bearing 140 and the second bearing 150, it is possible to support the output shaft 700 and reduce friction with the housing 100 during movement thereof.
As shown in fig. 2, the output shaft 700 is provided with a seal 160 through the housing 110. In the invention, the adopted sealing element 160 is an oil seal, so that the sealing property of the shell 100 is further improved, water splashed by the aerator in the operation process is prevented from entering the motor, the damage to the motor is avoided, and the service life of the whole device is prolonged. Of course, a sealing ring or other dynamic sealing method can be adopted.
As shown in fig. 9, the permanent magnet 600 includes 2N magnetic tiles connected end to end, and the material of the magnetic tiles is sintered neodymium iron boron. In the invention, the rotor core 500 is formed by one-step die-casting of the magnetic conductive material, so that the use amount of high-cost silicon steel plates is reduced, the turning amount is reduced, and the dimensional accuracy is ensured; the permanent magnet 600 is made of tile-type sintered ndfeb, the number of the tiles is 2N, the number of pole pairs is P2N/2N, N is a positive integer, and the magnetic tiles are bonded along the outer surface of the rotor core 500 with a high-strength bonding adhesive and then baked at a high temperature to achieve the required bonding strength. The arrangement mode makes the installation of the permanent magnet 600 and the rotor core 500 more convenient, and is beneficial to improving the production efficiency.
As shown in fig. 1, 2 and 11, an aerator according to a second embodiment of the present invention includes an inner rotor brushless dc motor according to the first embodiment of the present invention, a controller 800, an impeller 900 and a floating body 1000; the controller 800 is electrically connected to the inner rotor brushless dc motor and configured to control the inner rotor brushless dc motor to operate, and the impeller 900 is in transmission connection with the output shaft 700; a plurality of floats 1000 are fixedly coupled to the housing 100. Specifically, as shown in fig. 2, the controller 800 is disposed inside the controller housing 1100, and a preset program is set on the controller 800, and the controller 800 drives the inner rotor brushless dc motor according to the preset program, and further drives the impeller 900 to rotate through the output shaft 700; the whole aerator floats on the water surface by the floating body 1000.
In order to more conveniently arrange the floating bodies 1000, as shown in fig. 11, each floating body 1000 is fixedly connected with the housing 100 by a corresponding connecting rod 1200, and a plurality of floating bodies 1000 are arranged in a circumferentially and uniformly distributed manner, so that the whole device floats on the water surface in a relatively balanced manner.
According to the aerator, the inner rotor brushless direct current motor is adopted to replace a traditional driving structure of the acceleration and deceleration gear box of the induction motor, so that the structure of the whole device is simpler, the whole weight is lighter, and the output power of the inner rotor brushless direct current motor is far greater than that of the acceleration and deceleration gear box of the induction motor, thereby being beneficial to energy conservation; meanwhile, the condition that the reduction gear box is likely to leak oil or be damaged is avoided, and the whole device is more environment-friendly and easy to maintain.
In the description herein, references to the description of "one embodiment," "a further embodiment," "some specific embodiments," or "some examples," etc., mean that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. Inner rotor brushless DC motor, its characterized in that includes:
a housing;
the stator core is arranged in the shell, a plurality of tooth parts which are uniformly distributed in the circumferential direction are arranged on the inner side wall of the stator core, and a winding slot is formed between every two adjacent tooth parts;
the coil framework comprises two insulating wire frames, one side of each insulating wire frame, facing the stator core, is provided with a plurality of protrusions which are uniformly distributed in the circumferential direction, each protrusion is provided with a through groove, a abdicating groove matched with the tooth part is formed between every two adjacent protrusions, and the two insulating wire frames are oppositely embedded on two sides of the stator core;
the winding coils are wound on the coil framework, and each winding coil is respectively penetrated through two adjacent winding grooves;
a rotor core disposed inside the stator core;
the permanent magnet is arranged on the outer wall of the rotor iron core;
and the output shaft is rotatably connected with the axis of the rotor core and penetrates through the shell.
2. The inner rotor brushless dc motor of claim 1, wherein the rotor core includes:
the permanent magnet is arranged on the outer wall of the outer ring;
the inner ring is provided with a through hole, the output shaft penetrates through the through hole, and the outer ring is connected with the inner ring through a connecting shaft arranged at intervals.
3. An inner rotor brushless dc motor according to claim 1 or 2, wherein the rotor core has a flat structure, and a radial length of the rotor core is 5 to 10 times an axial length.
4. The inner rotor brushless dc motor of claim 1, wherein the housing includes:
a housing;
the end cover is detachably connected with one side of the shell, one end of the output shaft is rotatably connected with the end cover, and the other end of the output shaft extends out of the shell.
5. The inner rotor brushless dc motor of claim 4, wherein a receiving groove is formed at a side of the housing abutting the end cap, and a sealing ring is disposed in the receiving groove.
6. The inner rotor brushless dc motor of claim 4 or 5, wherein an inner sidewall of the end cap is provided with a first stepped hole, a sidewall opposite to the end cap in the housing is provided with a second stepped hole, the first stepped hole is provided with a first bearing, the second stepped hole is provided with a second bearing, and the output shaft is rotatably connected to the first bearing and the second bearing, respectively.
7. An inner rotor brushless dc motor according to claim 4 or 5, wherein a seal is provided where the output shaft passes through the housing.
8. The inner rotor brushless dc motor of claim 1, wherein the permanent magnet comprises 2N magnetic shoes connected end to end, the material of the magnetic shoes is sintered neodymium iron boron, and N is a positive integer.
9. Oxygen-increasing machine, its characterized in that includes:
an inner rotor brushless dc motor according to any of claims 1-8;
the controller is electrically connected with the inner rotor brushless direct current motor and is used for controlling the inner rotor brushless direct current motor to work;
the impeller is in transmission connection with the output shaft;
and the plurality of floating bodies are fixedly connected with the shell.
10. The aerator according to claim 9, wherein each floating body is fixedly connected with the housing by a corresponding connecting rod, and a plurality of floating bodies are arranged in a circumferentially and uniformly distributed manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110124843.2A CN112803647A (en) | 2021-01-29 | 2021-01-29 | Inner rotor brushless DC motor and oxygen-increasing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110124843.2A CN112803647A (en) | 2021-01-29 | 2021-01-29 | Inner rotor brushless DC motor and oxygen-increasing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112803647A true CN112803647A (en) | 2021-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110124843.2A Pending CN112803647A (en) | 2021-01-29 | 2021-01-29 | Inner rotor brushless DC motor and oxygen-increasing machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN112803647A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW391079B (en) * | 1994-09-09 | 2000-05-21 | Asmo Co Ltd | Commutator mounting structure, motor core insulator, motor rotor and motor construction |
| CN101278465A (en) * | 2005-10-06 | 2008-10-01 | 博格华纳公司 | DC motor with asymmetrical poles |
| CN201256312Y (en) * | 2008-08-31 | 2009-06-10 | 溧阳市宏达电机有限公司 | Brushless motor |
| CN208739928U (en) * | 2018-08-23 | 2019-04-16 | 无锡市灵鸿电子有限公司 | A kind of energy conservation low-power consumption oxygen-enriching machine in fish pond |
| CN109889002A (en) * | 2019-03-08 | 2019-06-14 | 孙建林 | One kind being closely integrated formula rotor |
| CN210957959U (en) * | 2019-11-19 | 2020-07-07 | 江苏云睿汽车电器系统有限公司 | Insulating sheet structure of wiper motor |
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2021
- 2021-01-29 CN CN202110124843.2A patent/CN112803647A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW391079B (en) * | 1994-09-09 | 2000-05-21 | Asmo Co Ltd | Commutator mounting structure, motor core insulator, motor rotor and motor construction |
| CN101278465A (en) * | 2005-10-06 | 2008-10-01 | 博格华纳公司 | DC motor with asymmetrical poles |
| CN201256312Y (en) * | 2008-08-31 | 2009-06-10 | 溧阳市宏达电机有限公司 | Brushless motor |
| CN208739928U (en) * | 2018-08-23 | 2019-04-16 | 无锡市灵鸿电子有限公司 | A kind of energy conservation low-power consumption oxygen-enriching machine in fish pond |
| CN109889002A (en) * | 2019-03-08 | 2019-06-14 | 孙建林 | One kind being closely integrated formula rotor |
| CN210957959U (en) * | 2019-11-19 | 2020-07-07 | 江苏云睿汽车电器系统有限公司 | Insulating sheet structure of wiper motor |
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Application publication date: 20210514 |