CN117811246A - Stator double permanent magnet type bilateral linear oscillating motor - Google Patents
Stator double permanent magnet type bilateral linear oscillating motor Download PDFInfo
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- CN117811246A CN117811246A CN202311826286.4A CN202311826286A CN117811246A CN 117811246 A CN117811246 A CN 117811246A CN 202311826286 A CN202311826286 A CN 202311826286A CN 117811246 A CN117811246 A CN 117811246A
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- mover
- core
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- 238000004804 winding Methods 0.000 claims abstract description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 10
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- 230000008901 benefit Effects 0.000 abstract description 5
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- 230000010355 oscillation Effects 0.000 abstract description 4
- 230000000737 periodic effect Effects 0.000 abstract description 4
- 238000005057 refrigeration Methods 0.000 description 4
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- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
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- 230000006835 compression Effects 0.000 description 1
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- 229910052742 iron Inorganic materials 0.000 description 1
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- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
The invention discloses a stator double permanent magnet type bilateral linear oscillating motor, which belongs to the technical field of linear oscillating motors, and comprises: a stator assembly, an armature winding and a mover assembly; the stator assembly includes: a stator core group and a stator permanent magnet group; the mover assembly includes: the first rotor permanent magnet, the rotor iron core and the second rotor permanent magnet are sequentially connected through the rotor fixing piece; when the rotor component performs reciprocating oscillation motion, the rotor component and the stator component interact to enable the rotor component to integrally generate periodic restoring force to form a magnetic spring, so that dependence on a traditional mechanical spring is weakened, and the integral volume of the linear compressor system can be reduced. Moreover, as the permanent magnets are arranged on the stator side and the rotor side, the overall magnetic load of the motor is increased, the output power of the motor is increased, and the yoke part of the motor is not easy to saturate, so that the overall power density of the linear compressor system is remarkably improved, and the advantages of the linear compressor are more obvious.
Description
Technical Field
The invention belongs to the technical field of linear oscillating motors, and particularly relates to a stator double-permanent-magnet type double-sided linear oscillating motor.
Background
At present, the refrigeration compressors adopted in the market are realized by adopting a mode of a traditional rotating motor and a crank connecting rod mechanism, and the structure has the defects of more friction points, low efficiency and the like. The linear refrigeration compressor adopting the linear oscillation motor can not only omit structures such as a crank connecting rod in the middle, but also reduce the volume of the compressor while reducing friction points and improving efficiency.
However, the linear oscillating motor does not replace the rotary compressor in a large scale at present, because on one hand, the traditional linear oscillating motor needs to be externally added with a mechanical spring to realize resonance, the existence of the mechanical spring increases the whole volume of the linear compressor, so that the volume advantage of the linear compressor is weakened, and on the other hand, the refrigeration power density and the maximum refrigeration power of the linear compressor on the market are generally lower than those of the rotary compressor, so that the design of the linear oscillating motor with low dependence on the mechanical spring, small volume and high power density is critical to the application and development of the linear compressor.
Disclosure of Invention
Aiming at the defects or improvement demands of the prior art, the invention provides a stator-rotor double-permanent-magnet type bilateral linear oscillating motor, which aims at enabling a rotor component and a stator component to interact to enable the whole rotor component to generate periodic restoring force to form a magnetic spring when the rotor component of the linear oscillating motor performs reciprocating oscillating motion; permanent magnets are arranged on the stator side and the rotor side so that the overall magnetic load of the motor is increased, the output power of the motor is increased, and the yoke part of the motor is not easy to saturate, so that the overall power density of the linear compressor system is remarkably improved, and the existing technical problem is solved.
To achieve the above object, according to one aspect of the present invention, there is provided a stator double permanent magnet type double sided linear oscillating motor comprising: a stator assembly, an armature winding and a mover assembly;
the stator assembly includes: a stator core group and a stator permanent magnet group; the stator core pack includes: two stator cores symmetrically distributed along the moving plane of the rotor; each side of the stator core comprises two stator modules; the stator permanent magnet group comprises a first stator permanent magnet and a second stator permanent magnet, and the first stator permanent magnet is arranged between two stator modules of the stator core at one side; the second stator permanent magnet is arranged between the two stator modules of the stator core at the other side;
the armature winding includes: a first coil wound around the two stator modules of the stator core on one side and a second coil wound around the two stator modules of the stator core on the other side;
the mover assembly includes: the first rotor permanent magnet, the rotor iron core and the second rotor permanent magnet are sequentially connected through the rotor fixing piece;
the permanent magnetic fields generated by the first stator permanent magnet and the second stator permanent magnet not only jointly act with the armature magnetic field generated by the armature winding to generate electromagnetic thrust for the rotor assembly, but also generate restoring force for the rotor core to form a magnetic spring.
In one embodiment, the first stator permanent magnet and the second stator permanent magnet are magnetized along a first direction and the magnetizing directions of the first stator permanent magnet and the second stator permanent magnet are opposite; the first mover permanent magnet and the second mover permanent magnet are magnetized along a second direction, and the magnetizing directions of the first mover permanent magnet and the second mover permanent magnet are opposite; wherein the first direction and the second direction are perpendicular.
In one embodiment, the first stator permanent magnet and the second stator permanent magnet are both longitudinally magnetized; the first mover permanent magnet and the second mover permanent magnet are transversely magnetized.
In one embodiment, the stator core is laminated in the transverse direction, and the mover core is laminated in the longitudinal direction, and the minimum lamination units are made of unoriented silicon steel sheets.
In one embodiment, the polarities of the magnetic fields generated by the first rotor permanent magnet and the second rotor permanent magnet and the first stator permanent magnet and the second stator permanent magnet at the corresponding stator core teeth are the same.
In one embodiment, the mover fixing member is an i-shaped fixing member, which fixes the first mover permanent magnet, the mover core, and the second mover permanent magnet as one body, preventing separation in a stationary state.
In one embodiment, the stator module is C-shaped.
In one embodiment, the bearing is a flange type linear bearing, and the bearing is matched with the guide groove of the end cover of the end part of the armature winding to play a supporting role, so that the mover assembly can reciprocate along the axial direction between the two sides of the stator core.
In one embodiment, the rotor assembly is provided with a rotor protective sleeve between two lateral ends and an end cover guide groove of the armature winding, and is fastened with the rotor core into a whole.
In one embodiment, the shaft is integrated with the mover fixing member and penetrates out from two sides of the mover fixing member, external threads are formed on the outer surfaces of two ends of the shaft, and multistage serial connection or load connection is carried out through nuts.
In general, the above technical solutions conceived by the present invention, compared with the prior art, enable the following beneficial effects to be obtained:
(1) According to the linear oscillating motor provided by the invention, when the rotor component performs reciprocating oscillating motion, the rotor component and the stator component interact to enable the whole rotor component to generate periodic restoring force to form the magnetic spring, so that the dependence on the traditional mechanical spring is reduced, and the whole volume of the linear compressor system can be reduced. Moreover, as the permanent magnets are arranged on the stator side and the rotor side, the overall magnetic load of the motor is increased, the output power of the motor is increased, and the yoke part of the motor is not easy to saturate, so that the overall power density of the linear compressor system is remarkably improved, and the advantages of the linear compressor are more obvious. In addition, the permanent magnets are arranged on the stator side and the rotor side, so that the output power of the magnetic load rising motor is increased, and compared with the traditional moving-magnet type and moving-iron type linear oscillating motor which increases the magnetic load by increasing the using amount of the permanent magnets so as to promote the output power, the structure stator core yoke is not easy to saturate.
Drawings
Fig. 1 is a schematic three-dimensional cutaway view of a stator permanent magnet type double-sided linear oscillating motor of the invention.
Fig. 2 is a longitudinal sectional view of a stator permanent magnet type double-sided linear oscillating motor of the present invention.
Fig. 3 is a transverse sectional view of a stator permanent magnet type double-sided linear oscillating motor of the present invention.
Fig. 4 is a three-dimensional overall view of a mover fixing member and a shaft thereof of a stator permanent magnet type double-sided linear oscillating motor of the present invention.
Fig. 5 is a three-dimensional overall view of a mover assembly mode of a stator permanent magnet type double-sided linear oscillating motor of the present invention.
Fig. 6 is a three-dimensional overall view of a flange-type linear bearing of a stator permanent magnet type double-sided linear oscillating motor.
Fig. 7 is a three-dimensional overall view of a winding and a rotor end cover of a stator permanent magnet type double-sided linear oscillating motor.
Fig. 8 is a three-dimensional overall view of end covers on two sides of a shaft of a stator permanent magnet type double-sided linear oscillating motor.
Detailed Description
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. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Fig. 1 is a schematic three-dimensional sectional view of a permanent magnet type double-sided linear oscillating motor with a stator (excluding windings, end covers of rotor cores and rotor protective sleeves) according to an embodiment of the present invention, and referring to fig. 1, with reference to fig. 2-7, a permanent magnet type double-sided linear oscillating motor with a stator according to an embodiment of the present invention will be described in detail.
The embodiment comprises a stator core 1, an armature winding 2, a stator permanent magnet 3, a rotor core 4, a rotor permanent magnet 5, a rotor fixing piece 6, a shaft 7 thereof, a linear bearing 8, a machine shell 9, a fixing screw 10, a winding and rotor end cover 11, a rotor protective sleeve 12 and a guide groove 13 of the winding and rotor end cover. The stator iron cores 1 are symmetrically distributed along the two sides of the moving plane of the rotor; each side of the stator core 1 comprises two C-shaped stator modules; a stator permanent magnet 3 magnetized longitudinally is clamped between the two C-shaped stator modules at each side; two coils of the armature winding 2 are respectively wound on two C-shaped stator modules at each side, and the winding direction and the positive direction of current are the same; two mover permanent magnets 5 magnetized along the normal direction clamp one mover iron core 4 to form a mover, and the three are combined together by a mover fixing piece 6.
According to the embodiment of the invention, referring to fig. 1-3, two stator permanent magnets 3 magnetized along the longitudinal direction are magnetized in opposite directions; the magnetizing directions of the two mover permanent magnets 5 magnetized along the normal direction are opposite, and the polarities generated by the two mover permanent magnets 3 on the tooth parts of the stator iron core 1 are the same as those generated by the stator permanent magnets; the shell 9 integrally comprises end covers on two sides of a motor shaft, end covers on the end parts of the armature winding 2 and upper and lower side shells 9 of the motor; a rotor protective sleeve 12 is arranged between the two transverse ends of the rotor and the guide grooves of the winding and the end covers of the rotor end, and is fastened with the rotor iron core 4 into a whole, and the rotor protective sleeve is made of high-strength wear-resistant PEEK or polytetrafluoroethylene material and can prevent the rotor from being worn; the stator core 1 is laminated in the transverse direction, the mover core 4 is laminated in the longitudinal direction, i.e., the moving direction, and each of them is made of unoriented silicon steel sheet into a minimum lamination unit.
Referring to fig. 4 and 5, a three-dimensional overall view of a mover fixing member 6 and an axis thereof of a stator permanent magnet type double-sided linear oscillating motor is shown, respectively. The mover fixing member 6 is an i-shaped fixing member, which fixes the mover permanent magnet 5 and the mover core 4 as a whole, and prevents the mover permanent magnet 5 from being separated from the mover core 4 by the repulsive force of the stator permanent magnet 3 in a stationary state.
Referring to fig. 6, a three-dimensional overall view and an axial cross-section of a linear bearing are shown, the linear bearing is a flange-type linear bearing, the flange is used for connecting the linear bearing with a casing, the flange is matched with a guide groove of an end cover of an armature winding end to play a supporting role, and a mover composed of a mover iron core, a mover permanent magnet and a mover fixing piece is ensured to reciprocate along the axial direction between stator iron cores at two sides.
Referring to fig. 7 and 8, there are shown a three-dimensional overall view of the armature winding and the end covers of the mover end and a three-dimensional overall view of the end covers on both sides of the shaft; the winding and rotor end covers and the middle positions of the shaft two side end covers are respectively provided with a guide groove, the winding and rotor end covers are used for supporting the rotor and preventing the rotor from being influenced by unbalanced normal force in the moving process so as to move along the vertical direction, and the shaft two side end covers are used for preventing the rotor from impacting the end covers and leaving enough space for the rotor to move.
Under this design, when the mover of linear oscillation motor is reciprocating oscillation motion, the whole periodic restoring force that can make the whole production of mover of rotor with stator interact constitutes the magnetic spring, and then weakens the dependence to traditional mechanical spring, can reduce the holistic volume of linear compressor system. Moreover, as the permanent magnets are arranged on the stator side and the rotor side, the overall magnetic load of the motor is increased, the output power of the motor is increased, and the yoke part of the motor is not easy to saturate, so that the overall power density of the linear compressor system is remarkably improved, and the advantages of the linear compressor are more obvious.
Simulation analysis and analysis calculation prove that the stator permanent magnet type bilateral linear oscillating motor has high power density, low dependence on mechanical springs, compact structure, convenient assembly, high integration degree, high utilization rate of permanent magnets, low saturation degree of stator iron cores and small volume, and is suitable for application occasions of bidirectional reciprocating linear motions such as compression or pumps.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. A stator double permanent magnet type double-sided linear oscillating motor, characterized by comprising: a stator assembly, an armature winding and a mover assembly;
the stator assembly includes: a stator core group and a stator permanent magnet group; the stator core pack includes: two stator cores symmetrically distributed along the moving plane of the rotor; each side of the stator core comprises two stator modules; the stator permanent magnet group comprises a first stator permanent magnet and a second stator permanent magnet, and the first stator permanent magnet is arranged between two stator modules of the stator core at one side; the second stator permanent magnet is arranged between the two stator modules of the stator core at the other side;
the armature winding includes: a first coil wound around the two stator modules of the stator core on one side and a second coil wound around the two stator modules of the stator core on the other side;
the mover assembly includes: the first rotor permanent magnet, the rotor iron core and the second rotor permanent magnet are sequentially connected through the rotor fixing piece;
the permanent magnetic fields generated by the first stator permanent magnet and the second stator permanent magnet not only jointly act with the armature magnetic field generated by the armature winding to generate electromagnetic thrust for the rotor assembly, but also generate restoring force for the rotor core to form a magnetic spring.
2. The stator double permanent magnet type double side linear oscillating motor according to claim 1, wherein,
the first stator permanent magnet and the second stator permanent magnet are magnetized along a first direction, and the magnetizing directions of the first stator permanent magnet and the second stator permanent magnet are opposite; the first mover permanent magnet and the second mover permanent magnet are magnetized along a second direction, and the magnetizing directions of the first mover permanent magnet and the second mover permanent magnet are opposite; wherein the first direction and the second direction are perpendicular.
3. The stator double permanent magnet type double side linear oscillating motor according to claim 2, wherein,
the first stator permanent magnet and the second stator permanent magnet are longitudinally magnetized;
the first mover permanent magnet and the second mover permanent magnet are transversely magnetized.
4. The stator double permanent magnet type double sided linear oscillating motor according to claim 2, wherein the first and second mover permanent magnets have the same polarity as the magnetic field generated by the first and second stator permanent magnets at the respective corresponding teeth of the stator core.
5. The stator double permanent magnet type double sided linear oscillating motor as claimed in claim 1, wherein the stator core is laminated in a transverse direction, the mover core is laminated in a longitudinal direction, and the minimum lamination units are made of non-oriented silicon steel sheets.
6. The stator double permanent magnet type double sided linear oscillating motor according to claim 1, wherein the mover fixing member is an i-shaped fixing member that fixes the first mover permanent magnet, the mover core and the second mover permanent magnet as one body, preventing separation in a stationary state.
7. The stator double permanent magnet type double sided linear oscillating motor of claim 1, wherein the stator module is C-shaped.
8. The stator double permanent magnet type bilateral linear oscillating motor according to claim 1, wherein the bearing is a flange type linear bearing, and the bearing is matched with a guide groove of an end cover of the armature winding to play a supporting role, so that the rotor component can reciprocate along the axial direction between the two sides of the stator iron core.
9. The stator double permanent magnet type double side linear oscillating motor according to claim 8, wherein the rotor assembly is provided with a rotor protective sleeve between two lateral ends and an end cover guide groove of the armature winding, and is fastened with the rotor core into a whole.
10. The stator double permanent magnet type bilateral linear oscillating motor according to claim 8, wherein the shaft is integrated with the rotor fixing piece and penetrates out from two sides of the rotor fixing piece, external threads are arranged on the outer surfaces of two ends of the shaft, and multistage serial connection or load connection is carried out through nuts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311826286.4A CN117811246A (en) | 2023-12-27 | 2023-12-27 | Stator double permanent magnet type bilateral linear oscillating motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311826286.4A CN117811246A (en) | 2023-12-27 | 2023-12-27 | Stator double permanent magnet type bilateral linear oscillating motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117811246A true CN117811246A (en) | 2024-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311826286.4A Pending CN117811246A (en) | 2023-12-27 | 2023-12-27 | Stator double permanent magnet type bilateral linear oscillating motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117811246A (en) |
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2023
- 2023-12-27 CN CN202311826286.4A patent/CN117811246A/en active Pending
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