CN110336440B - Brushless motor for dust collector - Google Patents
Brushless motor for dust collector Download PDFInfo
- Publication number
- CN110336440B CN110336440B CN201910383521.2A CN201910383521A CN110336440B CN 110336440 B CN110336440 B CN 110336440B CN 201910383521 A CN201910383521 A CN 201910383521A CN 110336440 B CN110336440 B CN 110336440B
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- Prior art keywords
- guide plate
- brushless motor
- wheel
- silicon steel
- air guide
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- 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
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- 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
- 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)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Brushless Motors (AREA)
Abstract
The invention discloses a brushless motor for a dust collector, which comprises a support, wherein a rotor assembly and a stator assembly are assembled in the support, a circuit board is fixed on the support, a movable impeller is fixed at the lower end of the rotor assembly, a fan cover is arranged outside the movable impeller, an air guide wheel is arranged between the lower part of the stator assembly and the fan cover and positioned above the movable impeller, the air guide wheel comprises a wheel body and a guide plate arranged on the outer wall of the wheel body, the guide plate is of an arc-shaped structure bent towards the right side, the lower end of the guide plate is vertical to the outer wall of the wheel body, the upper end of the guide plate is inclined towards the right side compared with the vertical surface of the outer wall of the wheel body, the surface of the guide plate is a smooth spiral arc surface, and an air guide channel is formed. The invention has the advantages that: reasonable structure and high air suction efficiency.
Description
Technical Field
The invention relates to the field of dust collector manufacturing, in particular to a brushless motor for a dust collector.
Background
The dust collector utilizes a motor to drive a fan to rotate at a high speed, so that partial vacuum is formed in a dust collecting chamber, air pressure difference is formed between the partial vacuum and the outside of the dust collecting chamber to generate air flow, dust is sucked into the dust collecting chamber along with the air flow, and the dust is filtered, retained in the dust collecting chamber and discharged with clean air.
Therefore, the structure of the motor 1 directly influences the suction force and the suction efficiency of the dust collector, and further influences the efficiency value of the dust collector.
In order to improve the air suction efficiency, most of the vacuum cleaner motors are designed with a flow guide structure, the flow guide structure of the existing vacuum cleaner motor is arranged between the movable impeller and the fan housing, and the flow guide channel is a simple vertical channel or a simple arc-shaped channel, for example, the patent application with the application number of 201710202140.0 and the name of "a brushless motor" is that the air guide wheel is arranged between the movable impeller and the fan housing.
The test of the diversion structure (the inducer is arranged between the impeller and the fan cover, and the diversion plate is of an arc structure) of the existing dust collector motor, the motor is connected with a 20mm inner diameter vent pipe (the existing household dust collector mostly adopts a 20mm inner diameter pipe as a vent connecting pipe) in the test process, the test result is shown in fig. 10, when the test opening is 13mm, the efficiency value is the highest, and the efficiency value at this time is 48.09; from the test results, it can be found that the efficiency peak is reached when the opening is 13mm, and the inner diameter of the vent pipe is 20mm, which indicates that the ventilation amount of the vent pipe is not fully utilized, so that the motor structure and the efficiency value of the existing dust collector have further improved space.
Disclosure of Invention
The invention aims to make up the defects and disclose a brushless motor for a dust collector with reasonable structure and high air suction efficiency to the society.
The technical scheme of the invention is realized as follows:
a brushless motor for a dust collector comprises a support, wherein a rotor assembly and a stator assembly are assembled in the support, a circuit board is fixed on the support, a movable impeller is fixed at the lower end of the rotor assembly, a fan cover is arranged outside the movable impeller, an air guide wheel is arranged between the lower part of the stator assembly and the fan cover and positioned above the movable impeller, the air guide wheel comprises a wheel body and a guide plate arranged on the outer wall of the wheel body, the guide plate is of an arc-shaped structure bent towards the right side, the lower end of the guide plate is perpendicular to the outer wall of the wheel body, the upper end of the guide plate is inclined towards the right side compared with the vertical surface of the outer wall of the wheel body, the surface of the guide plate is a smooth spiral arc surface, and an air guide channel is formed between.
The measures for further optimizing the technical scheme are as follows:
the lower end of each guide plate extends into the lower part of the upper end of the adjacent guide plate, and the upper air inlet and the lower air inlet of each air guide channel are arranged in a staggered mode.
The tail part of the lower end of the guide plate is in a horizontal state.
The fan cover is internally embedded with a sealing ring, and the lower end of the movable impeller is embedded and sealed with the sealing ring.
The upper end of the air guide wheel is provided with an assembly groove, and the lower end of the support is inserted into the assembly groove.
Stator module include by the multilayer silicon steel sheet fold the stator core that forms and the coil of coiling on stator core, the silicon steel sheet form by three silicon steel blocks that the structure is the same fixed, the silicon steel block including outer yoke portion and wire winding portion, wire winding portion set up in the center of outer yoke portion, the one end of outer yoke portion be provided with outer convex part, the other end of outer yoke portion be provided with the interior concave part of evagination looks adaptation, outer convex part and interior concave part adopt laser welding to fix after amalgamating.
The outer convex part be the trapezium structure, the apex angle of trapezium structure be the arc structure, the base angle of trapezium structure with adopt the arc transition between the tip of outer yoke portion.
The inner end of the winding part extends towards two sides to form an inner arc part.
And the outer side center of the outer yoke part is respectively provided with a limiting groove.
The silicon steel sheet is in a regular hexagon structure.
Compared with the prior art, the invention has the advantages that:
the brushless motor for the dust collector is characterized in that an air guide wheel is arranged between the lower part of a stator assembly and a fan cover, the air guide wheel is positioned above a movable impeller, the position of the air guide wheel is adjusted, a guide plate of the air guide wheel is of an arc-shaped structure bent towards the right side, the lower end of the guide plate is perpendicular to the outer wall of a wheel body, the upper end of the guide plate is obliquely arranged towards the right side compared with the vertical surface of the outer wall of the wheel body, and the surface of the guide plate is a smooth spiral arc surface; through detection, the brushless motor for the dust collector reaches the efficiency peak when the opening is 19mm, and the efficiency value reaches 52.58.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an exploded schematic view of the present invention;
FIG. 4 is a schematic view of the wind-guiding wheel of FIG. 3;
FIG. 5 is a schematic structural view of a silicon steel sheet according to the present invention;
FIG. 6 is a schematic structural view of the silicon steel block of FIG. 5;
FIG. 7 is an enlarged view of portion B of FIG. 6;
fig. 8 is a comparison graph of the utilization rate of the silicon steel sheet and the integral silicon steel sheet according to the present invention;
FIG. 9 is a graph showing the result of testing the suction efficiency of the brushless motor according to the present invention;
fig. 10 is a graph showing the result of testing the suction efficiency of the brushless motor having the conventional structure.
Detailed Description
The names of the reference numbers in the drawings of the invention are as follows:
the wind shield comprises a support 1, a rotor assembly 2, a stator assembly 3, a stator core 31, a coil 32, a circuit board 4, an impeller 5, a wind shield 6, a sealing ring 61, an air guide wheel 7, an assembly groove 7a, a wheel body 71, a guide plate 72, an air guide channel 73, an upper air inlet 73a, a lower air inlet 73b, a silicon steel sheet 8, a silicon steel block 9, an outer yoke part 91, an outer convex part 91a, an inner concave part 91b, a limiting groove 91c, a winding part 92 and an inner arc part 92 a.
The invention is described in further detail below with reference to the accompanying drawings:
a brushless motor for dust collector comprises a bracket 1, a rotor component 2 and a stator component 3 are assembled in the bracket 1, a circuit board 4 is fixed on the bracket 1, a movable impeller 5 is fixed at the lower end of the rotor component 2, a fan cover 6 is covered outside the movable impeller 5, an air guide wheel 7 is arranged between the lower part of the stator component 3 and the fan cover 6, the inducer 7 is positioned above the movable impeller 5, the inducer 7 comprises a wheel body 71 and a guide plate 72 arranged on the outer wall of the wheel body 71, the guide plate 72 is of an arc structure which is bent towards the right side, the lower end of the guide plate 72 is vertical to the outer wall of the wheel body 71, the upper end of the guide plate 72 is inclined towards the right side than the vertical plane of the outer wall of the wheel body 71, the surface of the guide plate 72 is a smooth spiral arc surface, and a wind guide channel 73 is formed between the adjacent guide plates 72.
The lower end of the guide plate 72 extends into the lower part of the upper end of the adjacent guide plate 72, and the upper air inlet 73a and the lower air inlet 73b of the air guide channel 73 are arranged in a staggered manner.
The tail part of the lower end of the guide plate 72 is in a horizontal state.
A sealing ring 61 is embedded in the fan cover 6, and the lower end of the movable impeller 5 is embedded and sealed with the sealing ring 61.
The upper end of the inducer 7 is provided with an assembly groove 7a, and the lower end of the bracket 1 is inserted into the assembly groove 7 a.
As shown in fig. 7, the outer protrusion 91a has a trapezoid structure, the top angle of the trapezoid structure has an arc structure, and the bottom angle of the trapezoid structure and the end of the outer yoke 91 are in arc transition.
The inner end of the winding portion 92 extends to both sides to form an inner arc portion 92 a.
The outer centers of the outer yokes 91 are respectively provided with a limit groove 91 c.
The silicon steel sheets 8 are in a regular hexagon structure.
The brushless single machine for the dust collector adopts three-phase electricity, three groups of coils 32 need to be wound on a stator core, the silicon steel sheet 8 is formed by fixing three silicon steel blocks 9 with the same structure, the winding parts 92 of the three silicon steel blocks 9 are respectively wound with one group of coils 32, a split structure is adopted, an outer yoke with an annular periphery is decomposed into three parts, the winding parts 92 are exposed outside (the winding parts 92 are prevented from being surrounded by the outer yoke), and the coils 32 are convenient to wind.
The three silicon steel blocks 9 of the split structure have the same structure, so that the uniformity of parts is improved, and the processing, the storage and the arrangement are convenient.
And (3) comparing the material utilization rate:
as shown in FIG. 8, if the silicon steel sheet with the complete structure is manufactured by using square raw materials, the raw materials with the side length of 50.61MM are required, and the area of the raw materialsIs 2561.37mm2(ii) a Is made of round raw materials, needs the raw materials with the diameter of 50.61MM and the area of the raw materials is 2010.68MM2The silicon steel plate is made into a round raw material, and the waste of partial raw materials is also caused.
The silicon steel sheet with the split structure in the invention is manufactured by adopting a rectangular raw material with the length of 86.25mm and the width of 21.04mm to manufacture three silicon steel blocks 9, and the area of the raw material is 1814.7 mm2It is 9% less than the round material and 29% less than the square material.
The above dimensional data are measured by CAD software.
The utilization rate of the raw materials is compared, and only a single silicon steel sheet is considered to be manufactured; the three silicon steel blocks 9 have the same structure, and when the silicon steel blocks 9 are manufactured, the silicon steel blocks can be continuously manufactured on the strip-shaped raw material plate, so that the utilization rate of the raw material can be further improved, and therefore, the split structure can greatly improve the utilization rate of the raw material and reduce the production cost.
The brushless motor of the invention adjusts the position of the air guide wheel 7, the air guide wheel 7 is arranged between the lower part of the stator component 3 and the fan cover 6, the air guide wheel 7 is positioned above the movable impeller 5, the guide plate 72 not only has an arc structure, but also has a micro-spiral structure, the lower end of the guide plate 72 is vertical to the outer wall of the wheel body 71, and the upper end of the guide plate 72 is inclined towards the right side than the vertical surface of the outer wall of the wheel body 71.
In addition, the upper air inlet 73a and the lower air inlet 73b of the air guide channel 73 are arranged in a staggered mode, so that the upper air inlet 73a and the lower air inlet 73b of the air guide channel 73 are prevented from being directly communicated, the generated rotational flow driving force is enhanced, and the air suction efficiency can be further improved.
Under the same test conditions, a 20mm inner diameter air pipe is connected to test the air suction efficiency of the brushless motor of the present invention and the test results of the brushless motor of the conventional structure (the air guide wheel is disposed between the impeller and the fan housing, and the air guide plate is in an arc structure) are shown in fig. 9 (test results of the brushless motor of the present invention) and fig. 10 (test results of the brushless motor of the conventional structure).
Through comparison, the brushless motor of the invention can reach the efficiency peak when the opening is 19mm, and the peak efficiency value reaches 52.58; the brushless motor with the existing structure reaches the peak efficiency when the opening is 13mm, and the peak efficiency value is 48.09.
The size of the opening corresponding to the peak of the efficiency value is close to the inner diameter of the vent pipe, so that the ventilation quantity of the vent pipe can be utilized, and the waste of the ventilation quantity is avoided.
In a well-developed dust collector mechanism, it is very difficult to improve the air suction efficiency of the motor by 1%, and the efficiency value of the brushless motor structure is improved by more than 4%, which is greatly beneficial to the improvement of the performance of the dust collector.
While the preferred embodiments of the present invention have been illustrated, various changes and modifications may be made by one skilled in the art without departing from the scope of the present invention.
Claims (8)
1. The utility model provides a brushless motor for dust catcher, including support (1), support (1) in be equipped with rotor subassembly (2) and stator module (3), support (1) on be fixed with circuit board (4), the lower extreme of rotor subassembly (2) be fixed with movable vane wheel (5), this movable vane wheel (5) dustcoat is equipped with fan housing (6), its characterized in that: an air guide wheel (7) is arranged between the lower part of the stator assembly (3) and the fan cover (6), the air guide wheel (7) is positioned above the movable impeller (5), the air guide wheel (7) comprises a wheel body (71) and a guide plate (72) arranged on the outer wall of the wheel body (71), the guide plate (72) is of an arc-shaped structure bent towards the right side, the guide plate (72) is of a micro-spiral structure, the lower end of the guide plate (72) is vertical to the outer wall of the wheel body (71), the upper end of the guide plate (72) is inclined towards the right side compared with the vertical surface of the outer wall of the wheel body (71), the surface of the guide plate (72) is a smooth spiral arc surface, and an air guide channel (73) is formed between the adjacent guide plates (72); the lower end of each guide plate (72) extends into the lower part of the upper end of the adjacent guide plate (72), and an upper air opening (73a) and a lower air opening (73b) of each air guide channel (73) are arranged in a staggered mode; the tail part of the lower end of the guide plate (72) is in a horizontal state.
2. The brushless motor for a vacuum cleaner according to claim 1, wherein: a sealing ring (61) is embedded in the fan cover (6), and the lower end of the movable impeller (5) is embedded and sealed with the sealing ring (61).
3. A brushless motor for a vacuum cleaner according to claim 2, wherein: the upper end of the air guide wheel (7) is provided with an assembling groove (7a), and the lower end of the bracket (1) is inserted into the assembling groove (7 a).
4. A brushless motor for a vacuum cleaner according to claim 3, wherein: stator module (3) include stator core (31) and coil (32) of coiling on stator core (31) that form by the fold of multilayer silicon steel sheet (8), silicon steel sheet (8) form by three silicon steel blocks (9) that the structure is the same are fixed, silicon steel block (9) including outer yoke portion (91) and wire winding portion (92), wire winding portion (92) set up in the center of outer yoke portion (91), the one end of outer yoke portion (91) be provided with outer convex part (91a), the other end of outer yoke portion (91) be provided with interior concave part (91b) of outer convex part (91a) looks adaptation, outer convex part (91a) and interior concave part (91b) adopt laser welding after amalgamation to fix.
5. The brushless motor for a vacuum cleaner according to claim 4, wherein: the outer convex part (91a) is of a trapezoid structure, the top angle of the trapezoid structure is of an arc structure, and the bottom angle of the trapezoid structure and the end part of the outer yoke part (91) are in arc transition.
6. The brushless motor for a vacuum cleaner according to claim 5, wherein: the inner end of the winding part (92) extends towards two sides to form an inner arc part (92 a).
7. The brushless motor for a vacuum cleaner according to claim 6, wherein: the outer side center of the outer yoke part (91) is respectively provided with a limiting groove (91 c).
8. The brushless motor for a vacuum cleaner according to claim 7, wherein: the silicon steel sheets (8) are in a regular hexagon structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910383521.2A CN110336440B (en) | 2019-05-09 | 2019-05-09 | Brushless motor for dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910383521.2A CN110336440B (en) | 2019-05-09 | 2019-05-09 | Brushless motor for dust collector |
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| Publication Number | Publication Date |
|---|---|
| CN110336440A CN110336440A (en) | 2019-10-15 |
| CN110336440B true CN110336440B (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910383521.2A Active CN110336440B (en) | 2019-05-09 | 2019-05-09 | Brushless motor for dust collector |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001042653A1 (en) * | 1999-12-10 | 2001-06-14 | Medquest Products, Inc. | Electromagnetically suspended and rotated centrifugal pumping apparatus and method |
| CN108521210A (en) * | 2018-06-12 | 2018-09-11 | 鲍真 | A kind of brshless DC motor for dust catcher |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE60325790D1 (en) * | 2002-09-20 | 2009-02-26 | Panasonic Corp | Electric blower and vacuum cleaner equipped therewith |
| KR20060007637A (en) * | 2004-07-20 | 2006-01-26 | 엘지전자 주식회사 | Guide vane structure of fan-motor for vacuum cleaner |
| CN205753683U (en) * | 2016-05-23 | 2016-11-30 | 阜新德尔汽车部件股份有限公司 | Electric hydraulic power-assisted steering system motor block-partitioned type stator iron core structure |
| CN205882888U (en) * | 2016-08-11 | 2017-01-11 | 苏州永捷电机有限公司 | Efficient D type motor for dust catcher |
| CN206452196U (en) * | 2017-01-21 | 2017-08-29 | 浙江悍马光电设备有限公司 | A kind of brushless motor of dust collector |
| CN206668619U (en) * | 2017-04-18 | 2017-11-24 | 苏州普发机电有限公司 | A kind of blower of cleaner determines impeller |
| CN207554429U (en) * | 2017-12-12 | 2018-06-29 | 江苏美的清洁电器股份有限公司 | Determine impeller and with its wind turbine, dust catcher |
| CN109236737A (en) * | 2018-11-23 | 2019-01-18 | 常州朗奇威电器有限公司 | A kind of centrifugal impeller for motor radiating |
-
2019
- 2019-05-09 CN CN201910383521.2A patent/CN110336440B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001042653A1 (en) * | 1999-12-10 | 2001-06-14 | Medquest Products, Inc. | Electromagnetically suspended and rotated centrifugal pumping apparatus and method |
| CN108521210A (en) * | 2018-06-12 | 2018-09-11 | 鲍真 | A kind of brshless DC motor for dust catcher |
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| CN110336440A (en) | 2019-10-15 |
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