CN111313648B - Electromagnetic linear actuator based on reed valve heat dissipation - Google Patents
Electromagnetic linear actuator based on reed valve heat dissipation Download PDFInfo
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- CN111313648B CN111313648B CN202010338761.3A CN202010338761A CN111313648B CN 111313648 B CN111313648 B CN 111313648B CN 202010338761 A CN202010338761 A CN 202010338761A CN 111313648 B CN111313648 B CN 111313648B
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- Prior art keywords
- reed valve
- air gap
- magnetic yoke
- reed
- linear actuator
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- 235000014676 Phragmites communis Nutrition 0.000 title claims abstract description 86
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 21
- 238000005086 pumping Methods 0.000 claims abstract description 10
- 238000004804 winding Methods 0.000 claims description 18
- 230000005489 elastic deformation Effects 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 claims description 2
- 244000089486 Phragmites australis subsp australis Species 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
-
- 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
Abstract
The invention relates to an electromagnetic linear actuator based on reed valve heat dissipation, which comprises a reed valve seat, reeds, a reed valve cover, an end cover, an outer magnetic yoke, an inner magnetic yoke, a permanent magnet array, a coil and a framework, and is characterized in that: an air gap is formed between the outer magnetic yoke and the inner magnetic yoke, an air gap magnetic field is enhanced by adopting a Halbach permanent magnet array layer, and the magnetic yoke, the end cover, the reed valve seat and the reed valve cover are fixedly connected to form a stator; the coil group is wound on the framework and can reciprocate in the air gap to serve as a mover; the framework is of a circular barrel-shaped structure with one end open, the inner magnetic yoke is of a hollow cylindrical structure, and the inner cavity of the inner magnetic yoke and the inner cavity of the framework form a pumping cavity together; the reed valve cover limits the openable travel of the reed; in the process of the moving element moving back and forth, the reed is opened and closed, pumping gas enters the actuator from the reed and the air gap and is discharged from the air gap, so that heat in the electromagnetic linear actuator is taken away; the invention effectively improves the heat dissipation performance and the power density of the electromagnetic linear actuator.
Description
Technical Field
The invention relates to the technical field of actuators, in particular to an electromagnetic linear actuator.
Background
The rotating motor has wide application in various fields of industry due to the excellent performance, however, in some occasions needing linear driving, a technical scheme of combining the rotating motor with a rotary-to-linear motion conversion mechanism is often adopted, and along with the development of a direct driving technology, a linear actuator is more and more favored in some fields needing quick response and high-precision control.
At present, the power density and the output power density of the linear actuator are key for determining the application performance of the linear actuator, however, the increase of the power density and the output power density often causes the energy consumption of the linear actuator to be increased rapidly, so that serious temperature rise is caused, and the working stability and the working reliability of the actuator are directly influenced. The heat dissipation measures such as the cooling device are added, so that the volume and the mass of the device are increased, the complexity of the system is increased, and the power density and the output force density of the linear actuator are adversely affected. How to increase the power density and the output power density and simultaneously to effectively dissipate heat becomes an important limiting factor for the technical development.
According to the electromagnetic linear actuator based on reed valve heat dissipation, the Halbach permanent magnet array is adopted to enhance the air gap magnetic field intensity, the power density and the output force density of the linear actuator are improved, and the reed valve is adopted to pump gas, so that the heat in the electromagnetic linear actuator is taken away, forced air cooling heat dissipation in the electromagnetic linear actuator is enhanced, meanwhile, the reed valve is compact in structure and does not need additional energy supply, the problem that the electromagnetic linear actuator heats seriously is solved on the premise that the structural compactness of the actuator is not affected, and the power density and the working reliability of the electromagnetic linear actuator are improved.
Disclosure of Invention
The electromagnetic linear actuator based on reed valve heat dissipation is designed, the Halbach permanent magnet array is adopted to enhance the air gap magnetic field intensity, the power density and the output force density of the linear actuator are improved, and the reed valve is adopted to pump gas, so that the problem of serious heating of the electromagnetic linear actuator is solved on the premise that the structural compactness of the actuator is not affected, and the power density and the working reliability of the electromagnetic linear actuator are improved.
The utility model provides an electromagnetism straight line executor based on reed valve heat dissipation, includes reed disk seat (1), reed (2), reed valve gap (3), end cover (4), outer yoke (5), permanent magnetism array (6), skeleton (7), interior yoke (8), coil (9), its characterized in that includes: the permanent magnet array (6) is a Halbach permanent magnet array layer formed by alternately and closely arranging axial magnetizing permanent magnets and radial magnetizing permanent magnets, and the permanent magnet array (6) is surface-mounted on the inner side of the outer magnetic yoke (5); the inner magnetic yoke (8) and the outer magnetic yoke (5) are coaxially fixed through the end cover (4), and an air gap is arranged between the inner magnetic yoke and the outer magnetic yoke; the outer magnetic yoke (5) is coaxially and fixedly connected with the reed valve seat (1), the reed valve cover (3) and the end cover (4) to serve as a stator; the coil (9) is wound in a groove of the framework (7) and can do reciprocating linear motion in the air gap to serve as a rotor; the framework (7) is of a circular barrel-shaped structure with one end open, the inner magnetic yoke (8) is of a hollow cylindrical structure, and the inner cavity of the inner magnetic yoke (8) and the inner cavity of the framework (7) together form a pumping cavity A; the reed (2) is composed of three parts: an inner disk (2.1), a beam arm (2.2) and an outer ring (2.3); the outer ring (2.3) is fixed with the reed valve seat (1) and the reed valve cover (3), the inner disc (2.1) can move in a hollow area of the reed valve cover (3), the beam arm (2.2) is always in an elastic deformation state, and the inner disc (2.1) is clung to the reed valve seat (1) when the actuator does not work.
The coil (9) consists of a forward winding coil and a reverse winding coil, and the winding directions of coils of adjacent windings are opposite, wherein the number of the forward windings is m, the number of the reverse windings is n, m and n are positive integers, and m=n or m-n= ±1; the number of the radial magnetizing permanent magnets in the permanent magnet array (6) is (m+n), and the number of the axial magnetizing permanent magnets is equal to (m+n+1).
The diameter of a circular flow passage on the reed valve seat (1) is smaller than that of the inner disc (2.1), and the flow passage in the reed valve cover (3) is divided into two parts: the diameter of the main runner (3.1) is larger than the inner diameter of the outer ring (2.3) and smaller than the outer diameter of the outer ring (2.3), and the diameter of the main runner (3.1) is also larger than the inner diameter of the air gap and smaller than the outer diameter of the air gap; the length of the main runner (3.1) is the movable travel of the inner disk (2.1).
The axle center of the end cover (4) is provided with a circular through hole, the air gap is provided with a vent hole, and the auxiliary runner (3.2) is communicated with the axle center through hole of the end cover (4) and the vent hole at the air gap.
The width of the air gap between the coil (9) and the permanent magnet array (6) is far smaller than the width of the air gap between the inner magnetic yoke (8) and the outer magnetic yoke (5).
The pumping cavity A is communicated with the environment only through an air gap between the coil (9) and the permanent magnet array (6) and a reed valve formed by the reed valve seat (1), the reed (2) and the reed valve cover (3).
According to the electromagnetic linear actuator based on reed valve heat dissipation, the Halbach permanent magnet array is adopted to enhance the air gap magnetic field intensity, the power density and the output force density of the linear actuator are improved, and the reed valve is adopted to pump gas, so that the heat in the electromagnetic linear actuator is taken away, forced air cooling heat dissipation in the electromagnetic linear actuator is enhanced, meanwhile, the reed valve is compact in structure and does not need additional energy supply, the problem that the electromagnetic linear actuator heats seriously is solved on the premise that the structural compactness of the actuator is not affected, and the power density and the working reliability of the electromagnetic linear actuator are improved.
According to the electromagnetic linear actuator based on reed valve heat dissipation, the electromagnetic linear actuator rotor directly drives a load to cancel a rotary-to-linear motion conversion mechanism, and a power transmission path is shortened; the Halbach permanent magnet array is adopted to enhance the air gap field intensity, so that the driving force and the response speed are improved, and the advantages of efficiency improvement and quick response are achieved in the field requiring linear driving.
According to the self-radiating electromagnetic direct-drive plunger pump, the framework is of a circular barrel-shaped structure with one end open, the inner magnetic yoke is of a hollow cylindrical structure, and the inner cavity of the inner magnetic yoke and the inner cavity of the framework form a pumping cavity together; during the reciprocating motion of the rotor, the reed is opened and closed, pumping gas enters the actuator from the reed and the air gap and is discharged from the air gap, so that heat in the electromagnetic linear actuator is taken away.
The self-radiating electromagnetic direct-drive plunger pump provided by the invention has the advantages that the adopted reed valve consists of the reed, the reed valve seat and the reed valve cover, the structure is compact, the accessory function is not needed, the actuator has self-radiating capability, the influence on the structural compactness of the actuator is small, and the power density of the actuator is further improved.
The electromagnetic linear actuator based on reed valve heat dissipation has the advantages of compact structure, rapid response, self heat dissipation and the like, and brings great economic benefit after being put into industrial application.
Drawings
Fig. 1 is a schematic structural view of an electromagnetic linear actuator based on reed valve heat dissipation.
Fig. 2 is a schematic view of a reed valve cover of an electromagnetic linear actuator based on reed valve heat dissipation.
Fig. 3 is a schematic view of a reed of an electromagnetic linear actuator based on reed valve heat dissipation according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
As shown in fig. 1 to 3, the device comprises a reed valve seat (1), a reed (2), a reed valve cover (3) and an end cover (4), an outer magnetic yoke (5), a permanent magnet array (6), a framework (7), an inner magnetic yoke (8) and a coil (9), and is characterized by comprising:
the permanent magnet array (6) is a Halbach permanent magnet array layer formed by alternately and closely arranging axial magnetizing permanent magnets and radial magnetizing permanent magnets, and the permanent magnet array (6) is surface-mounted on the inner side of the outer magnetic yoke (5); the inner magnetic yoke (8) and the outer magnetic yoke (5) are coaxially fixed through the end cover (4), and an air gap is arranged between the inner magnetic yoke and the outer magnetic yoke; the outer magnetic yoke (5) is coaxially and fixedly connected with the reed valve seat (1), the reed valve cover (3) and the end cover (4) to serve as a stator; the coil (9) is wound in a groove of the framework (7) and can do reciprocating linear motion in the air gap to serve as a rotor; the framework (7) is of a circular barrel-shaped structure with one end open, the inner magnetic yoke (8) is of a hollow cylindrical structure, and the inner cavity of the inner magnetic yoke (8) and the inner cavity of the framework (7) together form a pumping cavity A; the reed (2) is composed of three parts: an inner disk (2.1), a beam arm (2.2) and an outer ring (2.3); the outer ring (2.3) is fixed with the reed valve seat (1) and the reed valve cover (3), the inner disc (2.1) can move in a hollow area of the reed valve cover (3), the beam arm (2.2) is always in an elastic deformation state, and the inner disc (2.1) is clung to the reed valve seat (1) when the actuator does not work.
The coil (9) consists of a forward winding coil and a reverse winding coil, and the winding directions of coils of adjacent windings are opposite, wherein the number of the forward windings is m, the number of the reverse windings is n, m and n are positive integers, and m=n or m-n= ±1; the number of the radial magnetizing permanent magnets in the permanent magnet array (6) is (m+n), and the number of the axial magnetizing permanent magnets is equal to (m+n+1).
The diameter of a circular flow passage on the reed valve seat (1) is smaller than that of the inner disc (2.1), and the flow passage in the reed valve cover (3) is divided into two parts: the diameter of the main runner (3.1) is larger than the inner diameter of the outer ring (2.3) and smaller than the outer diameter of the outer ring (2.3), and the diameter of the main runner (3.1) is also larger than the inner diameter of the air gap and smaller than the outer diameter of the air gap; the length of the main runner (3.1) is the movable travel of the inner disk (2.1).
The axle center of the end cover (4) is provided with a circular through hole, the air gap is provided with a vent hole, and the auxiliary runner (3.2) is communicated with the axle center through hole of the end cover (4) and the vent hole at the air gap.
The width of the air gap between the coil (9) and the permanent magnet array (6) is far smaller than the width of the air gap between the inner magnetic yoke (8) and the outer magnetic yoke (5).
The pumping cavity A is communicated with the environment only through an air gap between the coil (9) and the permanent magnet array (6) and a reed valve formed by the reed valve seat (1), the reed (2) and the reed valve cover (3).
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (4)
1. The utility model provides an electromagnetism straight line executor based on reed valve heat dissipation, includes reed disk seat (1), reed (2), reed valve gap (3), end cover (4), outer yoke (5), permanent magnetism array (6), skeleton (7), interior yoke (8), coil (9), its characterized in that includes: the permanent magnet array (6) is a Halbach permanent magnet array layer formed by alternately and closely arranging axial magnetizing permanent magnets and radial magnetizing permanent magnets, and the permanent magnet array (6) is surface-mounted on the inner side of the outer magnetic yoke (5); the inner magnetic yoke (8) and the outer magnetic yoke (5) are coaxially fixed through the end cover (4), and an air gap is arranged between the inner magnetic yoke and the outer magnetic yoke; the outer magnetic yoke (5) is coaxially and fixedly connected with the reed valve seat (1), the reed valve cover (3) and the end cover (4) to serve as a stator; the coil (9) is wound in a groove of the framework (7) and can do reciprocating linear motion in the air gap to serve as a rotor; the framework (7) is of a circular barrel-shaped structure with one end open, the inner magnetic yoke (8) is of a hollow cylindrical structure, and the inner cavity of the inner magnetic yoke (8) and the inner cavity of the framework (7) together form a pumping cavity A; the reed (2) is composed of three parts: an inner disk (2.1), a beam arm (2.2) and an outer ring (2.3); the outer ring (2.3) is fixed with the reed valve seat (1) and the reed valve cover (3), the inner disc (2.1) can move in a hollow area of the reed valve cover (3), the beam arm (2.2) is always in an elastic deformation state, and the inner disc (2.1) is clung to the reed valve seat (1) when the actuator does not work; the coil (9) consists of a forward winding coil and a reverse winding coil, and the winding directions of coils of adjacent windings are opposite, wherein the number of the forward windings is m, the number of the reverse windings is n, m and n are positive integers, and m=n or m-n= ±1; the number of the radial magnetizing permanent magnets in the permanent magnet array (6) is (m+n), and the number of the axial magnetizing permanent magnets is equal to (m+n+1); the diameter of a circular flow passage on the reed valve seat (1) is smaller than that of the inner disc (2.1), and the flow passage in the reed valve cover (3) is divided into two parts: the diameter of the main runner (3.1) is larger than the inner diameter of the outer ring (2.3) and smaller than the outer diameter of the outer ring (2.3), and the diameter of the main runner (3.1) is also larger than the inner diameter of the air gap and smaller than the outer diameter of the air gap; the length of the main runner (3.1) is the movable travel of the inner disk (2.1).
2. The electromagnetic linear actuator based on reed valve heat dissipation according to claim 1, wherein the axle center of the end cover (4) is provided with a circular through hole, the air gap is provided with a vent hole, and the auxiliary runner (3.2) is communicated with the axle center through hole of the end cover (4) and the vent hole at the air gap.
3. Electromagnetic linear actuator based on reed valve heat dissipation according to claim 1, characterized in that the air gap width between the coil (9) and the permanent magnet array (6) is much smaller than the air gap width between the inner yoke (8) and the outer yoke (5).
4. Electromagnetic linear actuator based on reed valve heat dissipation according to claim 1, characterized in that the pumping chamber a is in communication with the environment only through the air gap between the coil (9) and the permanent magnet array (6) and the reed valve constituted by the reed valve seat (1), reed (2) and reed valve cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010338761.3A CN111313648B (en) | 2020-04-26 | 2020-04-26 | Electromagnetic linear actuator based on reed valve heat dissipation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010338761.3A CN111313648B (en) | 2020-04-26 | 2020-04-26 | Electromagnetic linear actuator based on reed valve heat dissipation |
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| Publication Number | Publication Date |
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| CN111313648A CN111313648A (en) | 2020-06-19 |
| CN111313648B true CN111313648B (en) | 2024-04-09 |
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| CN202010338761.3A Active CN111313648B (en) | 2020-04-26 | 2020-04-26 | Electromagnetic linear actuator based on reed valve heat dissipation |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116260307B (en) * | 2023-05-15 | 2023-07-18 | 深圳市三雅科技有限公司 | Linear motor sliding rail |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1615242A2 (en) * | 2004-07-06 | 2006-01-11 | Saia-Burgess Dresden GmbH | Electromagnetic actuator |
| CN101127474A (en) * | 2007-09-19 | 2008-02-20 | 南京理工大学 | High power density motive loop permanent magnetic linear electromotor |
| CN102011822A (en) * | 2010-10-20 | 2011-04-13 | 哈尔滨工程大学 | Hybrid vibration isolator |
| CN105186828A (en) * | 2015-10-15 | 2015-12-23 | 山东理工大学 | Diaphragm heat dissipation type electromagnetic linear actuator |
| CN211908622U (en) * | 2020-04-26 | 2020-11-10 | 山东理工大学 | Electromagnetic linear actuator based on heat dissipation of reed valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011014192B4 (en) * | 2011-03-16 | 2014-03-06 | Eto Magnetic Gmbh | Electromagnetic actuator device |
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2020
- 2020-04-26 CN CN202010338761.3A patent/CN111313648B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1615242A2 (en) * | 2004-07-06 | 2006-01-11 | Saia-Burgess Dresden GmbH | Electromagnetic actuator |
| CN101127474A (en) * | 2007-09-19 | 2008-02-20 | 南京理工大学 | High power density motive loop permanent magnetic linear electromotor |
| CN102011822A (en) * | 2010-10-20 | 2011-04-13 | 哈尔滨工程大学 | Hybrid vibration isolator |
| CN105186828A (en) * | 2015-10-15 | 2015-12-23 | 山东理工大学 | Diaphragm heat dissipation type electromagnetic linear actuator |
| CN211908622U (en) * | 2020-04-26 | 2020-11-10 | 山东理工大学 | Electromagnetic linear actuator based on heat dissipation of reed valve |
Non-Patent Citations (1)
| Title |
|---|
| 一种无铁心单边永磁同步直线电机及其永磁体阵列设计;毛军红；罗俊航；姜强；谢友柏;西安交通大学学报;-;20070320;第-卷(第03期);全文 * |
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