CN105186823A - Double-rotor transverse-flux moving magnet type linear oscillatory motor and method - Google Patents

Abstract

The invention discloses a double mover transverse magnetic flux moving magnet linear oscillating motor, which includes a stator and a mover; the direction of the main magnetic flux and the moving direction of the mover are perpendicular to each other; the stator is a C-shaped stator core ( 7), the stator winding (6) is embedded in the C-shaped slot; the mover is arranged in the middle of the upper and lower teeth of the C-shaped tooth in the C-shaped stator core (7); the mover is two magnetized A mover permanent magnet (9) composed of permanent magnets in opposite directions; two permanent magnets with opposite magnetization directions in the mover permanent magnet (9) are separated from each other by a partition made of a non-magnetic material.

Description

Double mover transverse flux moving magnet linear oscillating motor and method

technical field

The invention relates to a linear oscillating motor. Specifically, it is a moving magnet linear oscillating motor with transverse flux.

Background technique

The traditional technology uses transmission mechanisms such as cranks and leadscrews to convert the rotary motion of the rotary motor into linear reciprocating motion, which has problems such as complex structure, low efficiency, and poor mechanical reliability. Using a linear oscillating motor to realize linear reciprocating motion can save the transmission mechanism, reduce friction loss, and improve system efficiency and reliability.

The double mover linear compressor proposed in the Chinese patent application number 201110383620.4 includes a casing, a cylinder, a piston, a stator core, a winding coil, a mover, a permanent magnet, an end cover, a linear bearing, a resonance spring, and an adjusting nut. It has the advantages of high efficiency and compact structure, but the stator core is dumbbell-shaped and formed by radially stacking silicon steel sheets in the axial direction, so the structure is complex and the processing technology requirements are high.

The structure of LG's linear compressor is a cylindrical structure. The outer stator is composed of 16 small stator core blocks. The inner stator must be stacked into a radial structure with tight inner and outer loose, which is difficult to process and has large magnetic flux leakage. , limiting the further increase of its thrust density.

Contents of the invention

The technical problem to be solved by the invention is to provide a double mover transverse flux moving magnet linear oscillating motor with simple structure.

In order to solve the above technical problems, the present invention provides a double mover transverse flux moving magnet linear oscillating motor, including a stator and a mover; the direction of the main magnetic flux and the moving direction of the mover are perpendicular to each other.

As an improvement to the double mover transverse flux moving magnet linear oscillating motor described in the present invention: the stator is a C-shaped stator core, and a stator winding is embedded in a C-shaped slot; C in the C-shaped stator core A mover is arranged in the middle of the upper and lower teeth of the profile tooth; the mover is a mover permanent magnet composed of two permanent magnets with opposite magnetization directions; two permanent magnets with opposite magnetization directions in the mover permanent magnet They are separated from each other by partitions made of non-magnetic materials.

As a further improvement to the double mover transverse flux moving magnet linear oscillating motor described in the present invention: the stator winding adopts a concentrated winding arrangement.

As a further improvement to the double mover transverse flux moving magnet linear oscillating motor of the present invention: the stator and the mover are wrapped by a casing; the casing is surrounded by a casing and end covers arranged at both ends thereof.

As a further improvement to the double mover transverse flux moving magnet linear oscillating motor of the present invention: the two permanent magnets of the mover permanent magnet with opposite magnetization directions are fixed to each other after being penetrated by a linear shaft; The two ends and the end caps at both ends are respectively connected to each other by linear bearings.

As a further improvement to the double mover transverse flux moving magnet linear oscillating motor of the present invention: springs are respectively arranged between the mover permanent magnet and the linear bearings on both sides.

As a further improvement to the double mover transverse flux moving magnet linear oscillating motor described in the present invention: the C-shaped stator core is fixed to the end covers at both ends by limiting blocks.

The double mover transverse magnetic flux moving magnet linear oscillation method includes the following steps: the stator winding is energized to generate a magnetic field; the magnetic field increases the magnetic field of one of the permanent magnets of the double mover permanent magnets, and demagnetizes the other permanent magnet magnetic field to generate The electromagnetic thrust pointing to the magnetization side; the linear axis is driven to move in the corresponding direction by the electromagnetic thrust.

As an improvement of the double mover transverse magnetic flux moving magnet linear oscillation method described in the present invention: through the alternating electromagnetic thrust of the same frequency, the linear axis is driven to realize linear reciprocating motion.

Compared with the prior art, the present invention has the following advantages:

1. The present invention is a linear oscillating motor with transverse magnetic flux. The main magnetic flux direction is perpendicular to the moving direction of the mover. Therefore, the silicon steel sheets of the outer stator core are arranged in the axial direction and have the same thickness, which is similar to the stacking process of the traditional rotating motor core. Same, easy to process.

2. The stator core is a "C" type structure, and the mover permanent magnet is located in the middle of the upper and lower teeth of the "C" type teeth. There is no need to set the inner stator core, which solves the difficulty of stacking the inner stator core of the moving magnet linear oscillation motor. The problem has the advantages of simple and compact structure.

3. Within the effective stroke range, the magnetic resistance is basically 0, the output electromagnetic thrust is smooth, and the electromagnetic thrust is easy to control.

Description of drawings

The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings.

Fig. 1 is the main structural representation of the present invention;

FIG. 2 is a schematic diagram of the left cross-sectional structure of FIG. 1 .

Detailed ways

Embodiment 1, Figure 1 shows a double mover transverse flux moving magnet linear oscillating motor, including a stator and a mover; its main magnetic flux is perpendicular to the moving direction of the mover.

The above-mentioned stator is a C-shaped stator core 7, and the stator winding 6 is embedded in the C-shaped slot; the above-mentioned mover is a mover permanent magnet 9 composed of two permanent magnets with opposite directions of magnetization. The permanent magnets with opposite directions of magnetization are connected to each other after passing through the linear axis 1, and are separated by partitions made of non-magnetic materials.

The mover permanent magnet 9 traverses through the middle of the upper and lower teeth of the "C"-shaped teeth in the C-shaped stator core 7, and the magnetic field generated by the stator winding 6 after electrification increases the magnetic field of one of the permanent magnets of the mover permanent magnet 9. Magnetization: demagnetize the magnetic field of another permanent magnet, thereby generating an electromagnetic thrust pointing to the magnetization side, and then pushing the mover permanent magnet 9 to move along the direction perpendicular to the main magnetic flux.

The above-mentioned stator winding 6 adopts a concentrated winding arrangement, and the winding and embedding of the concentrated winding are relatively simple.

When the present invention is actually used, it is wrapped with a shell; the shell includes a casing 5 and left and right end covers 3; linear bearings 2 are respectively installed on the left and right end covers 3 to ensure the air gap between the mover and the stator constant; and between the permanent magnet 9 of the mover and the linear bearings 2 on the left and right sides, a recovery spring 8 is respectively arranged. Through the elastic force of the recovery spring 8, the resistance when the permanent magnet 9 of the mover returns is reduced, and the entire motor system is improved. s efficiency.

The use steps of the present invention are as follows:

1. The stator winding 6 is energized (alternating current) to generate a magnetic field;

2. The magnetic field intensifies the magnetic field of one of the permanent magnets of the double mover permanent magnet 9, and demagnetizes the magnetic field of the other permanent magnet; produces an electromagnetic thrust directed to the magnetization side;

3. Drive the linear axis 1 to move in the corresponding direction through the electromagnetic thrust.

4. Through the alternating electromagnetic thrust of the same frequency, the linear axis 1 is driven to realize linear reciprocating motion.

Finally, it should also be noted that what is listed above is only a specific embodiment of the present invention. Obviously, the present invention is not limited to the above embodiments, and many variations are possible. All deformations that can be directly derived or associated by those skilled in the art from the content disclosed in the present invention should be considered as the protection scope of the present invention.

Claims (9)

1. A double mover transverse flux moving magnet linear oscillating motor, comprising a stator and a mover; it is characterized in that: the direction of the main magnetic flux and the direction of motion of the mover are perpendicular to each other. 2. The double mover transverse flux moving magnet linear oscillating motor according to claim 1, characterized in that: the stator is a C-shaped stator core (7), and the C-shaped slot is embedded with a stator winding (6 ); A mover is arranged in the middle of the upper and lower teeth of the C-shaped teeth in the C-shaped stator core (7); The mover is a mover permanent magnet (9) composed of two permanent magnets with opposite magnetization directions; Two permanent magnets with opposite directions of magnetization in the mover permanent magnet (9) are separated from each other by a separator made of non-magnetic material. 3. The double mover transverse flux moving magnet linear oscillating motor according to claim 2, characterized in that: the stator winding (6) adopts a centralized winding arrangement. 4. The double mover transverse flux moving magnet linear oscillating motor according to claim 3, characterized in that: the stator and the mover are wrapped by a casing; The casing includes a casing (5) and end covers (3) arranged at both ends thereof. 5. The double mover transverse flux moving magnet linear oscillating motor according to claim 4, characterized in that: the two permanent magnets of the mover permanent magnet (9) with opposite directions of magnetization are formed by the linear axis (1 ) are fixed to each other after penetrating; The two ends of the linear shaft (1) and the end caps (3) at both ends are respectively connected to each other through linear bearings (2). 6. The double mover transverse flux moving magnet linear oscillating motor according to claim 5, characterized in that springs ( 8). 7. The double mover transverse flux moving magnet linear oscillating motor according to claim 6, characterized in that: the C-shaped stator core (7) is fixed on the upper and lower end covers ( 3). 8. The double mover transverse magnetic flux moving magnet linear oscillation method is characterized in that it comprises the following steps: The stator winding (6) is energized to generate a magnetic field; The magnetic field increases the magnetic field of one of the permanent magnets of the double mover permanent magnet (9), demagnetizes the magnetic field of the other permanent magnet, and generates an electromagnetic thrust directed to the magnetization side; The linear shaft (1) is driven to move in the corresponding direction by the electromagnetic thrust. 9 . The double mover transverse flux moving magnet linear oscillation method according to claim 8 , characterized in that: the linear shaft ( 1 ) is driven to realize linear reciprocating motion through alternating electromagnetic thrust of the same frequency.