CN211908622U - Electromagnetic linear actuator based on heat dissipation of reed valve - Google Patents
Electromagnetic linear actuator based on heat dissipation of reed valve Download PDFInfo
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- CN211908622U CN211908622U CN202020651286.0U CN202020651286U CN211908622U CN 211908622 U CN211908622 U CN 211908622U CN 202020651286 U CN202020651286 U CN 202020651286U CN 211908622 U CN211908622 U CN 211908622U
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- reed valve
- reed
- air gap
- yoke
- linear actuator
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Abstract
The utility model relates to a radiating electromagnetism linear actuator based on reed valve, including reed disk seat, reed valve gap, end cover, outer yoke, inner yoke, permanent magnetism array, coil and skeleton, its characterized in that: an air gap is formed between the outer yoke and the inner yoke, a Halbach permanent magnet array layer is adopted to enhance an air gap magnetic field, and the 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 rotor; the framework is of a circular barrel-shaped structure with one open end, the inner yoke is of a hollow cylindrical structure, and an inner cavity of the inner yoke and an inner cavity of the framework form a pump air cavity together; the reed is arranged in the reed valve seat, and the reed valve cover limits the openable stroke of the reed; in the process of the reciprocating motion of the rotor, the reed is opened/closed, and pumped 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 utility model discloses effectively promote electromagnetism straight line executor heat dispersion, power density.
Description
Technical Field
The utility model relates to an executor technical field especially relates to an electromagnetism straight line executor.
Background
The rotating motor has wide application in various industrial fields due to excellent performance, however, in some occasions requiring linear driving, a technical scheme of combining the rotating motor with a rotating-to-linear motion conversion mechanism is often adopted, and with the development of direct drive technology, a linear actuator is more and more favored in some fields requiring quick response and high-precision control.
At present, the power density and the output force density of the linear actuator are the key for determining the application performance of the linear actuator, however, the improvement of the power density and the output force density often causes the sharp increase of the energy consumption of the linear actuator, thereby causing serious temperature rise and directly influencing the working stability and reliability of the actuator. The addition of cooling devices and other heat dissipation measures often increases the size and mass of the device, increases the complexity of the system, and adversely affects the power density and output power density of the linear actuator. How to improve the power density and the output power density and simultaneously carry out effective heat dissipation becomes an important limiting factor of technical development.
The utility model discloses a radiating electromagnetism linear actuator based on reed valve, adopt and strengthen air gap magnetic field intensity based on Halbach permanent magnetism array, promote linear actuator's power density and output power density, adopt reed valve pump suction body, thereby take away the inside heat of electromagnetism linear actuator, reinforce the forced air cooling heat dissipation to inside with this, reed valve compact structure simultaneously, need not additional energy supply, solve the serious problem that electromagnetism linear actuator generates heat under the prerequisite that does not influence actuator compact structure nature, be favorable to promoting electromagnetism linear actuator's power density and operational reliability.
Disclosure of Invention
The electromagnetic linear actuator based on the reed valve heat dissipation is designed, the Halbach-based 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, the reed valve is adopted to pump gas, the problem that the electromagnetic linear actuator generates heat seriously is solved on the premise of not influencing the structural compactness of the actuator, and the power density and the working reliability of the electromagnetic linear actuator are improved.
The utility model provides a radiating electromagnetism linear actuator based on reed valve, includes reed disk seat (1), reed (2), reed valve gap (3), end cover (4), outer yoke (5), permanent magnetism array (6), skeleton (7), inner yoke (8), coil (9), its characteristic 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 surface of the permanent magnet array (6) is attached to the inner side of the outer yoke (5); the inner yoke (8) and the outer yoke (5) are coaxially fixed through the end cover (4), and an air gap is formed between the inner yoke and the outer yoke; the outer 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 the groove of the framework (7) and can do reciprocating linear motion in the air gap to actuate the rotor; the framework (7) is of a round barrel-shaped structure with one open end, the inner yoke (8) is of a hollow cylindrical structure, and the inner cavity of the inner yoke (8) and the inner cavity of the framework (7) form a pump air cavity A together; the reed (2) is composed of three parts: an inner disc (2.1), a beam arm (2.2) and an outer ring (2.3); wherein the outer ring (2.3) is fixed by the reed valve seat (1) and the reed valve cover (3), the inner disc (2.1) can move in the 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 the 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 and is (m + n + 1).
The diameter of a circular flow channel on the reed valve seat (1) is smaller than that of the inner disc (2.1), and the flow channel in the reed valve cover (3) is divided into two parts: the main flow channel (3.1) and the auxiliary flow channel (3.2), the diameter of the main flow channel (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 flow channel (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 flow passage (3.1) is the movable stroke of the inner disc (2.1).
The axial center of the end cover (4) is provided with a circular through hole, the air gap is provided with an air vent, and the auxiliary flow channel (3.2) is communicated with the axial center through hole of the end cover (4) and the air vent at the air gap.
The width of an air gap between the coil (9) and the permanent magnet array (6) is far smaller than that of an air gap between the inner yoke (8) and the outer yoke (5).
The pump air 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 consisting of the reed valve seat (1), the reed (2) and the reed valve cover (3).
The utility model discloses a radiating electromagnetism linear actuator based on reed valve, adopt and strengthen air gap magnetic field intensity based on Halbach permanent magnetism array, promote linear actuator's power density and output power density, adopt reed valve pump suction body, thereby take away the inside heat of electromagnetism linear actuator, reinforce the forced air cooling heat dissipation to inside with this, reed valve compact structure simultaneously, need not additional energy supply, solve the serious problem that electromagnetism linear actuator generates heat under the prerequisite that does not influence actuator compact structure nature, be favorable to promoting electromagnetism linear actuator's power density and operational reliability.
According to the electromagnetic linear actuator based on the reed valve heat dissipation, the rotor of the electromagnetic linear actuator directly drives the load, a motion conversion mechanism from rotation to linear is cancelled, and the power transmission path is shortened; the Halbach-based permanent magnet array is adopted to enhance the air gap magnetic field intensity, the driving force and the response speed are improved, and the Halbach-based permanent magnet array has the advantages of efficiency improvement and quick response in the field needing linear driving.
The utility model discloses a self-radiating electromagnetic direct-drive plunger pump, wherein a framework is in a circular barrel-shaped structure with one open end, an inner yoke is in a hollow cylindrical structure, and an inner cavity of the inner yoke and an inner cavity of the framework form a pump air cavity together; during the reciprocating motion of the rotor, the reeds are opened/closed, and pumped gas enters the actuator from the reeds and the air gap and is discharged from the air gap, so that heat in the electromagnetic linear actuator is taken away.
The utility model discloses a directly drive plunger pump from heat dissipation formula electromagnetism, the reed valve of adoption comprises reed, reed disk seat, reed valve gap, compact structure, need not the annex function, and the executor has from heat-sinking capability, and is less to the compact structure nature influence of executor, is favorable to further promoting executor power density.
The utility model discloses a radiating electromagnetism linear actuator based on reed valve has compact structure, response rapidly, from advantages such as heat dissipation, will bring huge economic benefits after the input industrialization is used.
Drawings
Fig. 1 is the structural schematic diagram of an electromagnetic linear actuator based on heat dissipation of a reed valve of the present invention.
Fig. 2 is a schematic diagram of a reed valve cover of an electromagnetic linear actuator based on heat dissipation of a reed valve.
Fig. 3 is a reed schematic diagram of an electromagnetic linear actuator based on heat dissipation of a reed valve according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 3, including reed valve seat (1), reed (2), reed valve gap (3), end cover (4), outer yoke (5), permanent magnet array (6), skeleton (7), inner yoke (8), coil (9), its characteristic 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 surface of the permanent magnet array (6) is attached to the inner side of the outer yoke (5); the inner yoke (8) and the outer yoke (5) are coaxially fixed through the end cover (4), and an air gap is formed between the inner yoke and the outer yoke; the outer 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 the groove of the framework (7) and can do reciprocating linear motion in the air gap to actuate the rotor; the framework (7) is of a round barrel-shaped structure with one open end, the inner yoke (8) is of a hollow cylindrical structure, and the inner cavity of the inner yoke (8) and the inner cavity of the framework (7) form a pump air cavity A together; the reed (2) is composed of three parts: an inner disc (2.1), a beam arm (2.2) and an outer ring (2.3); wherein the outer ring (2.3) is fixed by the reed valve seat (1) and the reed valve cover (3), the inner disc (2.1) can move in the 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 the 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 and is (m + n + 1).
The diameter of a circular flow channel on the reed valve seat (1) is smaller than that of the inner disc (2.1), and the flow channel in the reed valve cover (3) is divided into two parts: the main flow channel (3.1) and the auxiliary flow channel (3.2), the diameter of the main flow channel (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 flow channel (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 flow passage (3.1) is the movable stroke of the inner disc (2.1).
The axle center of the end cover (4) is provided with a circular through hole, the air gap is provided with an air vent, and the auxiliary flow passage (3.2) is communicated with the axle center through hole of the end cover (4) and the air vent at the air gap.
The width of the air gap between the coil (9) and the permanent magnet array (6) is far smaller than that between the inner yoke (8) and the outer yoke (5).
The pump air 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 consisting of the reed valve seat (1), the reed (2) and the reed valve cover (3).
The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (6)
1. The utility model provides a radiating electromagnetism linear actuator based on reed valve, includes reed disk seat (1), reed (2), reed valve gap (3), end cover (4), outer yoke (5), permanent magnetism array (6), skeleton (7), inner 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 surface of the permanent magnet array (6) is attached to the inner side of the outer yoke (5); the inner yoke (8) and the outer yoke (5) are coaxially fixed through the end cover (4), and an air gap is formed between the inner yoke and the outer yoke; the outer 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 the groove of the framework (7) and can do reciprocating linear motion in the air gap to actuate the rotor; the framework (7) is of a round barrel-shaped structure with one open end, the inner yoke (8) is of a hollow cylindrical structure, and the inner cavity of the inner yoke (8) and the inner cavity of the framework (7) form a pump air cavity A together; the reed (2) is composed of three parts: an inner disc (2.1), a beam arm (2.2) and an outer ring (2.3); wherein the outer ring (2.3) is fixed by the reed valve seat (1) and the reed valve cover (3), the inner disc (2.1) can move in the 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.
2. The reed valve heat dissipation based electromagnetic linear actuator according to claim 1, wherein the coil (9) is composed of a forward winding coil and a reverse winding coil, the winding directions of the 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, 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 and is (m + n + 1).
3. The solenoid linear actuator based on the reed valve heat dissipation of claim 1 is characterized in that 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 main flow channel (3.1) and the auxiliary flow channel (3.2), the diameter of the main flow channel (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 flow channel (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 flow passage (3.1) is the movable stroke of the inner disc (2.1).
4. The reed valve heat dissipation-based electromagnetic linear actuator as claimed in claim 1, wherein a circular through hole is formed in the axis of the end cover (4), a vent hole is formed in the air gap, and the auxiliary flow passage (3.2) is communicated with the axis through hole of the end cover (4) and the vent hole in the air gap.
5. Reed valve heat dissipation based electromagnetic linear actuator according to claim 1, characterized in that the width of the air gap between the coil (9) and the permanent magnet array (6) is much smaller than the width of the air gap between the inner yoke (8) and the outer yoke (5).
6. The solenoid linear actuator based on reed valve heat dissipation of claim 1, wherein the pump air 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 composed of the reed valve seat (1), the reed (2) and the reed valve cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020651286.0U CN211908622U (en) | 2020-04-26 | 2020-04-26 | Electromagnetic linear actuator based on heat dissipation of reed valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020651286.0U CN211908622U (en) | 2020-04-26 | 2020-04-26 | Electromagnetic linear actuator based on heat dissipation of reed valve |
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| CN211908622U true CN211908622U (en) | 2020-11-10 |
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| CN202020651286.0U Expired - Fee Related CN211908622U (en) | 2020-04-26 | 2020-04-26 | Electromagnetic linear actuator based on heat dissipation of reed valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111313648A (en) * | 2020-04-26 | 2020-06-19 | 山东理工大学 | Electromagnetic linear actuator based on heat dissipation of reed valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111313648A (en) * | 2020-04-26 | 2020-06-19 | 山东理工大学 | Electromagnetic linear actuator based on heat dissipation of reed valve |
| CN111313648B (en) * | 2020-04-26 | 2024-04-09 | 山东理工大学 | Electromagnetic linear actuator based on reed valve heat dissipation |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201110 Termination date: 20210426 |
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| CF01 | Termination of patent right due to non-payment of annual fee |