CN108599406B - Single-phase brushless DC motor - Google Patents
Single-phase brushless DC motor Download PDFInfo
- Publication number
- CN108599406B CN108599406B CN201810077016.0A CN201810077016A CN108599406B CN 108599406 B CN108599406 B CN 108599406B CN 201810077016 A CN201810077016 A CN 201810077016A CN 108599406 B CN108599406 B CN 108599406B
- Authority
- CN
- China
- Prior art keywords
- tooth
- rotor
- phase brushless
- motor
- stator
- 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
- 238000004804 winding Methods 0.000 claims abstract description 55
- 230000008859 change Effects 0.000 claims abstract description 24
- 238000009413 insulation Methods 0.000 claims description 11
- 239000000446 fuel Substances 0.000 description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- 238000000746 purification Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- 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
- 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
- H02K1/165—Shape, form or location of the slots
-
- 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
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
-
- 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
- H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The invention provides a single-phase brushless direct current motor, which comprises a stator and a rotor, wherein the stator comprises a stator core and windings, the rotor comprises permanent magnets and a rotating shaft, the stator core comprises at least N yokes and teeth which are arranged in an annular array and are arranged at equal intervals, each yoke is enclosed to form a fixed ring, the permanent magnets are sleeved in the fixed rings, each yoke is provided with a winding, each tooth is respectively connected with one end part of one yoke, each tooth comprises a tooth head extending to the center of the fixed ring, the side surface of the tooth head, facing the center axis of the fixed ring, is a tooth end surface, a gap is reserved between the tooth end surface and the permanent magnets, the tooth end surface is divided into an equidistant surface and a gradual change surface, the equidistant surface is provided with an arc surface, the distance between any point on the equidistant surface and the center axis of the fixed ring is equal, and the distance between the point on the gradual change surface and the center axis of the fixed ring is gradually reduced or gradually increased along the rotating direction of the rotor, wherein N is an even number and is greater than or equal to 4. The single-phase brushless direct current motor can reduce starting current.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a single-phase brushless direct current motor.
Background
At present, in order to prevent the fuel vapor in the oil tank from entering the atmosphere to cause the atmosphere pollution and the increase of oil consumption, an automobile is generally provided with a fuel vapor purification system, the fuel vapor purification system comprises an activated carbon tank, a separating valve arranged at an oil outlet of the oil tank, a pipeline for communicating the activated carbon tank with the separating valve and the electromagnetic valve arranged between the pipeline outlet and the activated carbon tank, the fuel vapor in the oil tank enters the activated carbon tank from the separating valve outlet through the pipeline, fuel molecules in the fuel vapor are adsorbed by the activated carbon, the electromagnetic valve can not actively suck the fuel vapor into an air inlet manifold, and the working efficiency of the fuel vapor purification system is low. In order to solve the above problems, a technical solution is proposed in the prior art that a vacuum pump assembly is added in a fuel vapor purification system to actively extract fuel vapor in a pipeline, so as to improve the working efficiency of the fuel vapor purification system, where the vacuum pump assembly includes a vacuum pump and a motor for driving the vacuum pump, but the current motor is excessively large in starting current.
Disclosure of Invention
The invention aims to provide a single-phase brushless direct current motor and aims to solve the technical problem that the motor in the prior art is overlarge in operation starting current.
The invention discloses a single-phase brushless direct current motor, which comprises a stator and a rotor, wherein the stator comprises a stator core and windings arranged on the stator core, the rotor comprises permanent magnets which are arranged in a tubular shape and rotating shafts sleeved in the permanent magnets, the stator core comprises at least N yoke parts which are arranged in an annular array at equal intervals and at least N tooth parts which are arranged in an annular array at equal intervals, the yoke parts encircle to form a stator ring, the permanent magnets are sleeved in the stator ring, each yoke part is provided with one winding, each tooth part is respectively connected with one end part of one yoke part, each tooth part comprises a tooth head which extends to the center of the stator ring, the side surface of the tooth head, facing the center axis of the stator ring, is a tooth end surface, the tooth end surface and the permanent magnets are provided with gaps, the tooth end surface is divided into an equidistant surface and a gradual change surface which are connected in the radial direction of the stator ring, the equidistant surface is arranged in an arc surface, any point on the equidistant surface is equal to the center axis of the stator ring, the distance between the tooth surface and the center axis of the stator ring is equal to or greater than the even number of the center axis, and the distance between the tooth surface and the tooth surface is equal to the even number or greater than the rotation direction 4.
Further, the tooth part further comprises a rod piece with an extending direction pointing to the ring centering ring from one end part of the yoke part, one end of the rod piece is fixedly connected with the tooth head, the other end of the rod piece is fixedly connected with the end part of the yoke part, and the rod piece and the tooth head fixedly connected with the rod piece form a T-shaped structure together.
Further, the paths corresponding to the equidistant surfaces are equal to the paths corresponding to the gradual change surfaces, the yoke heads are spliced and installed in a tail-to-head mode, and tooth grooves are formed between every two adjacent tooth heads.
Further, each winding comprises an insulation framework inserted into the yoke part and the winding wire wound on the insulation framework, and the winding wires of each winding are electrically connected.
Further, the winding is a fractional slot concentrated winding.
Further, the insulating framework comprises a body fixedly connected with the yoke part and used for winding the winding, baffles are arranged at two ends of the body, the winding is wound on the body, and the winding is located between the two baffles.
Further, the rotor further comprises a rotor iron core tightly clamped between the rotating shaft and the permanent magnets, and the rotating shaft, the permanent magnets and the rotor iron core are coaxially arranged with the equidistant surfaces.
Further, the gradual change surface is provided with an arc-shaped surface, and the distance from the point on the gradual change surface to the central axis of the stator ring is gradually reduced along the rotation direction of the rotor.
Further, the gradual change surface is arranged in a plane, and the distance from the point on the gradual change surface to the central axis of the stator ring gradually increases along the rotation direction of the rotor.
Further, the stator core comprises a mounting shell, and the stator core is fixedly connected with the mounting shell.
Compared with the prior art, the invention has the technical effects that: when the single-phase brushless direct current motor is not electrified, the whole magnetic field of the single-phase brushless direct current motor is provided by the permanent magnet of the rotor, the change of the size of a gap between the tooth end face of the tooth head and the side face of the rotor can change the magnetic resistance in the gap, as the tooth end face is divided into an equidistant surface and a gradual change surface which are connected along the radial direction of the stator ring, the equidistant surface is provided with an arc surface, the distance between any point on the equidistant surface and the central axis of the stator ring is equal, the distance between the point on the gradual change surface and the central axis of the stator ring is gradually reduced or gradually increased along the rotating direction of the rotor, so that the permanent magnet and the stator core can rotate relative to the stator core through the magnetic force effect and stay at the position with minimum magnetic resistance in the gap, and after each time the single-phase brushless direct current motor is powered off, the rotor stays at the position with minimum magnetic resistance in the gap all the time through the magnetic force between the permanent magnet and the stator core, after the single-phase brushless direct current motor is electrified, the distance between the arbitrary point on the equidistant surface and the central axis of the stator ring is equal, the distance between the permanent magnet and the stator core is reduced, and the single-phase direct current motor is driven, and the single-phase direct current motor is started under the condition that the brushless direct current motor is started, and the brushless direct current motor is started at the minimum torque is started, and the current is at the maximum torque is started, and the current is at the starting position.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the embodiments of the present invention or the drawings used in the description of the prior art, and it is obvious that the drawings described below are only some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a perspective view of a single-phase brushless dc motor according to an embodiment of the present invention.
Fig. 2 is a perspective view of the stator core of fig. 1.
Fig. 3 is a perspective view of an insulating skeleton in an embodiment of the present invention.
Fig. 4 is an exploded perspective view of a rotor in an embodiment of the present invention.
Reference numerals illustrate:
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent.
As shown in fig. 1 to 4, the present invention provides a single-phase brushless dc motor, specifically, as shown in fig. 1, 2 and 3, the single-phase brushless dc motor includes a stator 111 and a rotor 131, the stator 111 includes a stator core 112 and a winding 123 mounted on the stator core 112, the rotor 131 includes a permanent magnet 132 disposed in a tubular shape and a rotating shaft 133 sleeved in the permanent magnet 132, the stator core 112 includes at least N yokes 113 disposed in an annular array and disposed at equal intervals, and at least N teeth 114 disposed in an annular array and disposed at equal intervals, each yoke 113 encloses to form a stator ring, and the permanent magnet 132 is sleeved in the stator ring.
Each yoke 113 is provided with one winding 123, each tooth 114 is connected to one end of one yoke 113, each tooth 114 comprises a tooth head 115 extending towards the center of the fixed ring, the side surface of the tooth head 115 facing the center axis of the fixed ring is a tooth end surface 116, a gap is reserved between the tooth end surface 116 and the permanent magnet 132, the tooth end surface 116 is divided into an equidistant surface 117 and a gradual change surface 118 which are connected along the radial direction of the fixed ring, the equidistant surface 117 is arranged in an arc surface, the distance between any point on the equidistant surface 117 and the center axis of the fixed ring is equal, and the distance between a point on the gradual change surface 118 and the center axis of the fixed ring is gradually reduced or gradually increased along the rotation direction of the rotor 131, wherein N is an even number and is greater than or equal to 4.
In this embodiment, when the single-phase brushless dc motor is not energized, the total magnetic field of the single-phase brushless dc motor is provided by the permanent magnet 132 of the rotor 131, the change in the size of the gap between the tooth end face 116 of the tooth head 115 and the side face of the rotor 131 can change the magnetic resistance in the gap, since the tooth end face 116 is divided into the equidistant surface 117 and the gradual change surface 118 which are connected along the radial direction of the stator ring, the equidistant surface 117 is arranged in an arc surface, the distance between any point on the equidistant surface 117 and the central axis of the stator ring is equal, and the distance between the point on the gradual change surface 118 and the central axis of the stator ring is gradually reduced or gradually increased along the rotation direction of the rotor 131, so that the magnetic resistance between the permanent magnet 132 and the stator core 112 can be kept at the minimum position in the gap by the rotor 131 relative to the stator core 112 through the magnetic force, and the rotor 131 stays at the minimum position in the gap through the magnetic force between the permanent magnet 132 and the stator core 112 after each power failure.
After the single-phase brushless dc motor is energized, the winding 123 is energized and generates a magnetic field, the stator 111 generates a starting torque and drives the rotor 131 to rotate, when the rotor 131 is located at a position with minimum magnetic resistance in the gap, the starting torque generated by the stator 111 is maximum at this time, so that the starting current of the single-phase brushless dc motor can be reduced, and the single-phase brushless dc motor can be started under a smaller initial current condition.
Further, the permanent magnet 132 includes two pairs of north and south magnetic poles alternately distributed along the rotation direction of the rotor 131.
Further, as shown in fig. 1 and 2, the tooth 114 further includes a rod 119 extending in a direction pointing from one end of the yoke 113 to the centering ring, one end of the rod 119 is fixedly connected to the tooth head 115, the other end of the rod is fixedly connected to the end of the yoke 113, and the rod 119 and the tooth head 115 fixedly connected thereto form a T-shaped structure together.
Further, as shown in fig. 1 to 3, each winding 123 includes an insulation skeleton 124 inserted into the yoke 113 and the winding wire 128 wound on the insulation skeleton 124, and the winding 123 is mounted on the yoke 113 to reduce the requirement of the single-phase brushless dc motor for input current, and the winding wires 128 of each winding 123 are electrically connected.
Further, the insulation skeleton 124 includes a body 125 for winding the winding wire 128, two ends of the body 125 are provided with baffles 126, the winding wire 128 is wound on the body 125, the winding wire 128 is located between the two baffles 126, the two baffles 126 can prevent the winding wire 128 wound on the body 125 from being scattered, the body 125 is further provided with a skeleton through hole 122 through which the yoke 113 passes, and when the winding wire 128 is wound on the insulation skeleton 124 and forms the winding wire 123 together with the insulation skeleton 124, the yoke 113 is inserted into the insulation skeleton 124 through the skeleton through hole 122 and is fixedly connected with the insulation skeleton 124.
Further, as shown in fig. 1 and 2, the paths corresponding to the equidistant surfaces 117 are equal to the paths corresponding to the gradual change surfaces 118, the yoke portions 113 are assembled end to end, and tooth grooves 121 are formed between every two adjacent tooth heads 115.
In the prior art, when the winding 123 is mounted, the winding wire 128 is wound on the stator core 112 through the slot 121, the mounting efficiency of the winding 123 is low, and in order to increase the winding speed of the winding 123, the slot 121 needs to be left with a sufficient width.
In this embodiment, the yokes 113 are mounted in a head-to-tail manner, so that the mounting efficiency of the winding 123 can be improved, specifically, the winding 123 is mounted to the yokes 113 first, and then the yokes 113 are mounted in a head-to-tail manner, so that the mounting efficiency of the winding 123 is improved compared with the prior art in which the winding 128 is wound on the stator 111 via the tooth slots 121. And, when the winding 123 is installed, the winding 128 is not required to be wound on the stator 111 through the tooth slot 121, so that the width of the tooth slot 121 can be reduced to achieve the effect of increasing magnetic flux, and then the output torque and the rotating speed of the single-phase brushless direct current motor are increased under the same input current, so that the single-phase brushless direct current motor meets the high-speed performance requirement, and when the output torque or the rotating speed of the direct current motor is fixed, the requirement of the direct current motor on the input current can be reduced, and the running current of the single-phase brushless direct current motor can be reduced.
Further, the winding 123 is a fractional slot concentrated winding 123. The frequency of the cogging 121 torque fundamental wave can be increased, and the cogging 121 torque ripple amount can be significantly reduced.
Further, as shown in fig. 1 and 2, the rotor 131 further includes a rotor core 134 tightly sandwiched between the rotating shaft 133 and the permanent magnet 132, and the rotating shaft 133, the permanent magnet 132, and the rotor core 134 are all coaxially disposed with the equidistant surface 117.
Further, the external surface of the rotor core 134 is pressed with ribs or knurls, so that torque can be conveniently transmitted to the permanent magnet 132, the rotor core 134 is fixedly connected with the rotating shaft 133, the rotor core 134 can be integrally injection molded with the permanent magnet 132, the high-speed running strength is enhanced, and the permanent magnet 132 is prevented from cracking under the action of centrifugal force.
Further, as shown in fig. 1 and 2, the gradual change surface 118 is provided in an arc shape, and the distance from the point on the gradual change surface 118 to the central axis of the stator ring gradually decreases along the rotation direction of the rotor 131.
In other embodiments of the present invention, the gradual surface 118 may be disposed in a plane, and the distance from the point on the gradual surface 118 to the central axis of the stator ring gradually increases along the rotation direction of the rotor 131.
Further, a mounting housing (not shown) is included, and the stator core 112 is fixedly connected to the mounting housing.
Further, as shown in fig. 1, the single-phase brushless dc motor further includes two wire holders 141 electrically connected to the windings 123, at least N through holes 122 are formed in the stator core 112, in this embodiment, four through holes 122 are formed in the stator core 112, two through holes 122 located on a diagonal are used for installing two wire holders 141, and two through holes 122 located on another diagonal are used for installing and connecting the stator core 112 with the installation housing.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. The single-phase brushless DC motor comprises a stator and a rotor, wherein the stator comprises a stator core and windings arranged on the stator core, the rotor comprises permanent magnets arranged in a tubular shape and a rotating shaft sleeved in the permanent magnets, the stator core is characterized by comprising at least N yokes which are arranged in an annular array at equal intervals and teeth which are arranged in the annular array at equal intervals, one end of each yoke is integrally connected with one tooth, the other end of each yoke can form a winding opening with the other tooth, each yoke is spliced and installed in a tail manner to form a fixed ring, the permanent magnets are sleeved in the fixed rings, each yoke is provided with one winding, each tooth part is respectively connected with one end part of one yoke part, each tooth part comprises a tooth head extending to the center of the fixed ring, the side surface of the tooth head, facing the center axis of the fixed ring, is a tooth end surface, a gap is reserved between the tooth end surface and the permanent magnet, the tooth end surface is divided into an equidistant surface and a gradual change surface which are connected along the radial direction of the fixed ring, the equidistant surface is provided with an arc surface, the distance between any point on the equidistant surface and the center axis of the fixed ring is equal, and the distance between the point on the gradual change surface and the center axis of the fixed ring is gradually reduced or gradually increased along the rotating direction of the rotor, wherein N is an even number and is more than or equal to 4;
when the single-phase brushless direct current motor is not electrified, the whole magnetic field of the single-phase brushless direct current motor is provided by the permanent magnets of the rotor, and the magnetic resistance in the gap can be changed by changing the size of the gap between the tooth end face of the tooth head and the side face of the rotor, so that the rotor always stays at the position with the minimum magnetic resistance in the gap through the magnetic force between the permanent magnets and the stator core after the single-phase brushless direct current motor is powered off each time;
after the single-phase brushless direct current motor is electrified, the winding is electrified and generates a magnetic field, the stator generates starting torque and drives the rotor to rotate, when the rotor is positioned at the position with minimum magnetic resistance in the gap, at the moment, the starting torque generated by the stator is maximum, and the starting current of the single-phase brushless direct current motor can be reduced, so that the single-phase brushless direct current motor can be started under the condition of smaller initial current.
2. The single-phase brushless dc motor of claim 1, wherein the teeth further comprise a rod extending in a direction from one end of the yoke toward the center of the stator ring, one end of the rod being fixedly connected to the tooth head, the other end of the rod being fixedly connected to the end of the yoke, the rod and the tooth head fixedly connected thereto together forming a T-shaped structure.
3. The single-phase brushless dc motor as claimed in claim 2, wherein the paths corresponding to the equidistant surfaces are equal to the paths corresponding to the gradual change surfaces, and tooth grooves are formed between every two adjacent tooth heads.
4. The single-phase brushless dc motor as claimed in claim 3, wherein each of the windings includes an insulation bobbin inserted in the yoke and a wire wound around the insulation bobbin, and the wire of each of the windings is electrically connected.
5. The single-phase brushless dc motor of claim 4 wherein the windings are fractional-slot concentrated windings.
6. The single-phase brushless dc motor of claim 4, wherein the insulating frame comprises a body fixedly connected to the yoke for winding the winding, the two ends of the body are provided with baffles, the winding is wound on the body, and the winding is located between the two baffles.
7. The single-phase brushless dc motor of claim 6 wherein the rotor further comprises a rotor core tightly sandwiched between the shaft and the permanent magnets, the shaft, the permanent magnets, and the rotor core being coaxially disposed with the equidistant surfaces.
8. The single-phase brushless dc motor as claimed in any one of claims 1 to 5, wherein the gradual surface is provided with an arc surface, and a distance from a point on the gradual surface to a central axis of the stator ring is gradually reduced in a rotation direction of the rotor.
9. The single-phase brushless dc motor as claimed in any one of claims 1 to 5, wherein the gradual surface is provided in a plane, and a distance from a point on the gradual surface to a central axis of the stator ring is gradually increased in a rotation direction of the rotor.
10. The single-phase brushless dc motor as claimed in any one of claims 1 to 5, comprising a mounting housing, the stator core being fixedly connected to the mounting housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810077016.0A CN108599406B (en) | 2018-01-26 | 2018-01-26 | Single-phase brushless DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810077016.0A CN108599406B (en) | 2018-01-26 | 2018-01-26 | Single-phase brushless DC motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108599406A CN108599406A (en) | 2018-09-28 |
| CN108599406B true CN108599406B (en) | 2024-04-09 |
Family
ID=63608334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810077016.0A Active CN108599406B (en) | 2018-01-26 | 2018-01-26 | Single-phase brushless DC motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108599406B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113346701A (en) * | 2021-06-16 | 2021-09-03 | 李应光 | Direct current motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102629811A (en) * | 2012-03-05 | 2012-08-08 | 浙江亿利达风机股份有限公司 | Brushless direct current motor |
| CN203119732U (en) * | 2013-02-26 | 2013-08-07 | 珠海格力电器股份有限公司 | Single-phase brushless DC motor |
| CN203674819U (en) * | 2013-12-18 | 2014-06-25 | 广东美的环境电器制造有限公司 | Motor |
| CN106921272A (en) * | 2015-12-25 | 2017-07-04 | 德昌电机(深圳)有限公司 | Electric machine |
| CN207947657U (en) * | 2018-01-26 | 2018-10-09 | 捷和电机制品(深圳)有限公司 | Single-phase brushless direct-current motor |
-
2018
- 2018-01-26 CN CN201810077016.0A patent/CN108599406B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102629811A (en) * | 2012-03-05 | 2012-08-08 | 浙江亿利达风机股份有限公司 | Brushless direct current motor |
| CN203119732U (en) * | 2013-02-26 | 2013-08-07 | 珠海格力电器股份有限公司 | Single-phase brushless DC motor |
| CN203674819U (en) * | 2013-12-18 | 2014-06-25 | 广东美的环境电器制造有限公司 | Motor |
| CN106921272A (en) * | 2015-12-25 | 2017-07-04 | 德昌电机(深圳)有限公司 | Electric machine |
| CN207947657U (en) * | 2018-01-26 | 2018-10-09 | 捷和电机制品(深圳)有限公司 | Single-phase brushless direct-current motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108599406A (en) | 2018-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8622722B2 (en) | Fuel pump | |
| JP5743409B2 (en) | Electric motor | |
| US9385567B2 (en) | Rotating electric machine | |
| JP6032769B2 (en) | Electric compressor for vehicles | |
| KR101558349B1 (en) | Rotor structure of drive motor | |
| JP2004028083A (en) | Fuel pump | |
| JP2015095997A (en) | Motor | |
| WO2021100292A1 (en) | Slotless electric motor, electric blower, and electric vacuum cleaner | |
| EP1324472B1 (en) | Inner and outer rotor slotless electric motor with ring-type winding | |
| KR102277265B1 (en) | Motor assembly | |
| KR100706193B1 (en) | Insulator for motor stator | |
| CN108599406B (en) | Single-phase brushless DC motor | |
| KR20110058057A (en) | Permanent magnet type motor | |
| EP4027488A1 (en) | Stator | |
| US5910697A (en) | High-power, low-voltage axial air-gap electrical machine having a compact stator | |
| CN115085430A (en) | Electric machine | |
| KR20110008749A (en) | Stator having structure of division type skew core, bldc motor using the same, and battery cooling apparatus | |
| WO2020156139A1 (en) | Electric motor, stator assembly, and winding support therefor | |
| KR101259679B1 (en) | Electric motor-driven compressor for vehicle | |
| KR102654659B1 (en) | Arc type permanent magnet and flux concentrate type rotor having the same | |
| CN215949880U (en) | Fan device | |
| JP4325065B2 (en) | Rotating electric machine for vehicles | |
| CN112688519B (en) | Stator permanent magnet type axial magnetic field permanent magnet motor | |
| CN110582926A (en) | Permanent magnet motor | |
| CN114039435B (en) | Rotor structure, motor structure, compressor structure and refrigeration equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |