KR19980068223U - Mover structure of linear motor - Google Patents

Abstract

The present invention facilitates the assembly work when assembling the linear motor by fixing a plurality of permanent magnets and frames with bolts without using epoxy bonds, and increases the operating efficiency of the linear compressor using the linear motor. Relates to the structure of the mover.

The present invention for this purpose in the linear motor consisting of a plurality of permanent magnets in the shape of an arc, upper and lower frames for supporting both ends of the permanent magnets and bolts for fixing the permanent magnets and the upper and lower frames,

The same semicircular groove is formed at both ends of the permanent magnets, and the bolt is inserted into the semicircular groove to fix and fix the permanent magnets and the frame.

Accordingly, the present invention is bolted to the permanent magnets and the frame is very easy to assemble, prevent the gap between the permanent magnet and the permanent magnet, and at the same time to maintain a constant amount of magnetic flux generated in the permanent magnet linear The operating efficiency of the linear compressor using the motor can be increased.

Description

Mover structure of linear motor

The present invention relates to a mover structure of a linear motor, and in particular, the present invention is to bolt a plurality of permanent magnets and frames without using an epoxy bond to facilitate the assembly work when assembling a linear motor, using a linear motor The present invention relates to a mover structure of a linear motor capable of increasing the operation efficiency of a compressor.

FIG. 1A is an assembly view of a mover of a conventional linear motor, and as shown in FIG. 1A, a bolt 70 fixing a plurality of permanent magnets to an upper frame 60 ^{1 of a} lower frame 60 and the permanent member. The magnets are assembled with an epoxy bond 80 to bond the permanent magnets 40 so as not to leave the frame.

1B is a cross-sectional view taken along the line A-A of FIG. 1A, and FIG. 2 shows the shape of the permanent magnet.

However, such a linear motor is fixed to the upper and lower frames by fixing the side of the permanent magnets with a thermosetting epoxy resin, or bolts to fix the permanent magnets to the upper and lower frames during assembly.

In addition, since both the inner and outer diameters of the rare earth permanent magnets are formed with the same polarity on the mover frame, if the same poles of permanent magnets and permanent magnets are assembled during linear motor assembly, the repulsive force during assembly is considerably large, resulting in considerable high speed during compression operation. (60 reciprocating operations per minute).

However, the linear motor as described above has a permanent magnet material of Nd (neodymium) -Fe (iron) -B (boron) series, which is not easy to assemble during assembly, and the permanent magnet tries to escape the frame even after operation. There is a problem.

In addition, the gap between the permanent magnets and the permanent magnets is filled with non-magnetic epoxy resin, which creates a gap between the permanent magnets and the permanent magnets. There are problems, such as a decrease.

Therefore, the present invention facilitates the assembly work when assembling the linear motor by fixing a plurality of permanent magnets and frames with bolts without using epoxy bonds to solve the conventional problems as described above, the gap between the permanent magnets and permanent magnets The purpose of the present invention is to prevent the occurrence of the magnetic flux generated at the permanent magnet and to increase the operating efficiency of the linear compressor using the linear motor.

Figure 1a is an assembly formation of the mover of the conventional linear motor

FIG. 1B is a cross-sectional view taken along the line A-A of FIG. 1A

2 is a conventional magnet shape diagram

3 is a structural cross-sectional view of a compressor using a general linear motor

Figure 4a is a plan view of a linear motor cross section of the present invention

4B is an external front view of the linear motor

Figure 5a is an assembly formation of the mover of the linear motor of the present invention

FIG. 5B is a cross-sectional view taken along the line B-B in FIG. 5A

6 is an enlarged view of a portion C of FIG. 5B.

7 is a shape of the permanent magnet of the present invention

<Description of the symbols used in the main parts of the drawing>

10: Out core 20: Inner core

30: coil 40,90: permanent magnet

50: shaft 60: lower frame

60 ¹ : Upper frame 70: Bolt

80: Epoxy bond 90 ^1, 90 ^2: grooves on the semi-circular

The present invention to achieve the above object is a plurality of permanent magnets made of an arc shape;

Upper and lower frames supporting both ends of the permanent magnets; And

In the linear motor made of bolts for fixing the permanent magnets and the upper, lower frames,

The same semicircular grooves are formed at both ends of the permanent magnets, and a bolt is inserted into the semicircular grooves to fix the permanent magnets and the frame.

Hereinafter, a configuration according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a structural cross-sectional view of a compressor using a general linear motor, the coil 30 is wound in a slot of the outer core 10, and the inner core 20 is fixedly installed with the cylinder 100 of the compressor. The permanent magnet 40 of the mover is connected to the piston 110 of the compressor.

And 50 is a shaft, 120 is a valve gear for controlling the opening and closing of the valve, 130 is a silencer to silence the exhaust sound during the compression operation of the compressor, 140 is a vibration absorber for absorbing shock or vibration during the compression operation of the compressor, 150 is a linear motor Each of the springs to adjust the rotational speed of the compressor for low power consumption.

4A is a plan view of a cross section of the linear motor of the present invention, and FIG. 4B is a front view of the linear motor compressor. As shown in FIGS. 4A and 4B, the outer core 10 and the inner core 20 are excited to generate a magnetic field. It consists of a coil 30 to be made up, a plurality of permanent magnets 40 to excite the outer core and the inner core to create a magnetic field, the inner core 20 to form a magnetic path, and the shaft 50 to take out the torque.

FIG. 5A is an assembly view of the mover of the linear motor of the present invention, and FIG. 5B is a cross-sectional view taken along line BB of FIG. 5A, as shown in FIGS. 5A and 5B, and a plurality of permanent magnets 90 having an arc shape. In the linear motor consisting of a lower frame 60 or an upper frame 60 ¹ for supporting both ends of the permanent magnets 90, and a bolt 70 for fixing the frames with the permanent magnets,

It is configured to fix the permanent magnets 90 and the lower frame 60 or the upper frame 60 ¹ by inserting a bolt 70 in the same semi-circular groove in both ends of the permanent magnets (90).

FIG. 6 is an enlarged view of portion C of FIG. 5B, and as shown in FIG. 6, the same semicircular grooves 90 ¹ and 90 ² are formed at both ends of the permanent magnets 90, and the semicircular shape is formed. The concave groove 90 ¹ , 90 ² is configured to be fastened to the bolt 70.

In addition, Figure 7 is a shape of the permanent magnet of the present invention, semi-circular groove 90 ¹ , 90 ² is formed so that the bolt is fastened to both ends of the permanent magnet (90).

As such, the present invention processes both ends of the plurality of permanent magnets 90 having one cylindrical shape in the same semicircular shape (see FIG. 7), and processes the semicircular grooves 90 ¹ and 90 ² with bolts 70. (See Fig. 6).

In this way, the bolts 70 are inserted into the grooves 90 ¹ and 90 ² which are processed at both ends of the magnet 90 in a semicircular shape, and the plurality of permanent magnets 90 and the lower frame are inserted into the inserted bolts 70. By fixing the 60 or the upper frame 60 ¹ to prevent the gap between the permanent magnet and the permanent magnet.

In addition, when assembling the linear motor as shown in FIG.

On the other hand, when the direction of the permanent magnet 40 of the mover toward the outer core 10, the force received by the permanent magnet 40 is raised upward by the left hand law of Fleming.

At this time, when the alternating current of the current is applied to the permanent magnet 40 of the mover (+), (-) alternately, the permanent magnet 40 of the mover is operated in a reciprocating motion to compress the fluid in the permanent magnet The distribution of generated magnetic flux becomes constant, which increases the operating efficiency (approximately 11% increase) of the linear compressor.

According to the present invention as described above, by inserting the bolt into the groove of the permanent magnet processed in a semi-circular shape to fix the permanent magnets and the frame, the assembly work is easy when assembling the linear motor, the gap between the permanent magnet and the permanent magnet There is an advantage to prevent the occurrence.

In addition, by maintaining a constant amount of magnetic flux generated in the permanent magnet has the advantage of increasing the operating efficiency of the linear compressor, improving the reliability.

Claims (1)

A plurality of permanent magnets having an arc shape; Upper and lower frames supporting both ends of the permanent magnets; And In the compressor consisting of bolts for fixing the permanent magnets and the frame, Forming the same semi-circular grooves on both ends of the permanent magnets, and inserting a bolt in the semi-circular grooves to fix the permanent magnets and the frame fixedly fixed.