KR101783687B1 - Variable speed power transmission using magnetic coupling - Google Patents

Variable speed power transmission using magnetic coupling Download PDF

Info

Publication number
KR101783687B1
KR101783687B1 KR1020160005458A KR20160005458A KR101783687B1 KR 101783687 B1 KR101783687 B1 KR 101783687B1 KR 1020160005458 A KR1020160005458 A KR 1020160005458A KR 20160005458 A KR20160005458 A KR 20160005458A KR 101783687 B1 KR101783687 B1 KR 101783687B1
Authority
KR
South Korea
Prior art keywords
load
magnetic coupling
disk
pole
coupling surfaces
Prior art date
Application number
KR1020160005458A
Other languages
Korean (ko)
Other versions
KR20170085829A (en
Inventor
성환호
Original Assignee
주식회사 피에스텍
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 피에스텍 filed Critical 주식회사 피에스텍
Priority to KR1020160005458A priority Critical patent/KR101783687B1/en
Publication of KR20170085829A publication Critical patent/KR20170085829A/en
Application granted granted Critical
Publication of KR101783687B1 publication Critical patent/KR101783687B1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
    • H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
    • H02K49/104—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H49/00—Other gearings
    • F16H49/005—Magnetic gearings with physical contact between gears
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0231—Magnetic circuits with PM for power or force generation
    • H01F7/0242—Magnetic drives, magnetic coupling devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a variable speed power transmission apparatus using magnetic coupling, and more particularly, to a variable speed power transmission apparatus using a variable speed power transmission system for facilitating variable speed operation of a load driven by a motor Transmitting device.
The present invention has the following effects.
By applying the power connection method between the motor and the load through magnetic coupling, it is possible to freely adjust the rotational speed of the load driven by the motor by adjusting the magnetic force of the permanent magnet by the electromagnetic method, Minimizing the power usage of the driven system and minimizing installation and maintenance costs with a simple structure.

Description

Variable speed power transmission device using magnetic coupling

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a variable speed power transmission apparatus using magnetic coupling, and more particularly, to a variable speed power transmission apparatus using a variable speed power transmission system for facilitating variable speed operation of a load driven by a motor Transmitting device.

The method of controlling the operation speed of the load driven by the motor can be roughly classified into an electric system and a mechanical system.

There is a method of using an inverter in an electric way.

Inverter is a device that controls the speed by converting the voltage and frequency supplied to the motor. During the power conversion process, the inverter circuit for converting the AC to DC is turned on and the power is again supplied to the motor .

Such an inverter method has advantages such as simple control of a conventional induction motor, non-step variable speed operation in a wide range, and precision speed control, but it has a high installation cost and durability is lower than a fluid coupling And maintenance is difficult.

A mechanical approach is to use fluid coupling.

The fluid coupling is a power transmission element that transmits the rotational force of the input shaft to the output shaft through the fluid. In other words, fluid coupling absorbs impact and torsional vibration due to the characteristics of power transmission method through fluid, and slip occurs during overloading to realize smooth power transmission.

Since the fluid coupling is a fluid power transmission device, there is no coupling wear, durability, and installation cost is high. However, the power loss at high speed (70% speed: power transmission efficiency 65% , 60% speed: power transmission efficiency 52%), a cooling device is required to cool the loss (heat) generated in the fluid coupling, and it is difficult to control the speed precisely according to irregular slip of the fluid coupling itself.

Korean Patent Publication No. 10-2012-0130040 (November 28, 2012)

The problems to be solved in the present invention are as follows.

To minimize the power consumption, adjust the operation speed freely, and reduce the installation and maintenance cost through the variable speed operation of the load driven by the motor (motor).

In order to solve the above problems,

A load disc portion 120 coupled to the load shaft 110 at the center thereof and connected to the load 100; And a driving disc unit 220 coupled to the driving shaft 210 at the center thereof and connected to the motor 200,

The load disk unit 120 is a ferromagnetic body and has a plurality of load disk poles 121a, 121b, 121c, ... and conductor receiving slots 121ab, 121bc, A load disk 121, and an induction current coil 123 formed as a metal conductor and connected to the conductor receiving slot to form a closed circuit,

The induction current coil 123 includes a plurality of slot conductors 123ab, 123bc, ..., the slot conductors 123ab, 123bc, ... provided corresponding to the conductor receiving slots 121ab, 121bc, And an outer circumferential conductor 123s joined to the other end of the slot conductors 123ab, 123bc, ...,

The driving disc unit 220 is a nonmagnetic member and includes a nonmagnetic disc 1226 whose center is coupled to the driving shaft 210 and a permanent magnet 223 and an electromagnet in which a control current coil 225 is wound around the magnetizing iron core 224 And a yoke 221,

The yoke 221 includes a plurality of pawls 221a, 221b, 221c, ..., and a plurality of pawls 221a, 221b, 221c, ..., which are arranged in a radial manner and have a lower end surface coupled to a top surface of the non- , ..., and magnet accommodating cells 221ab, 221bc, ...,

Each of the magnet accommodating cells 221ab, 221bc, ... is provided with at least one permanent magnet and at least one electromagnet,

The lower end faces of the load disc poles 121a, 121b, 121c, ... are connected to the upper end faces of the load magnetic coupling surfaces 122a, 122b, 122c, ..., the radial pawls 221a, 221b, 221c, The drive disc portion 220 is disposed at the lower end of the load disc portion 120 as the drive magnetic coupling surfaces 222a, 222b, 222c, ...,

A predetermined gap is formed between the load magnetic coupling surfaces 122a, 122b, 122c, ... and the drive magnetic coupling surfaces 222a, 222b, 222c,

And the power transmission speed is controlled by controlling the current of the control current coil (225).

The present invention has the following effects.

By applying the power connection method between the motor and the load through magnetic coupling, it is possible to freely adjust the rotational speed of the load driven by the motor by adjusting the magnetic force of the permanent magnet by the electromagnetic method, Minimizing the power usage of the driven system and minimizing installation and maintenance costs with a simple structure.

1 is a view showing a load disk unit 120 according to a first embodiment of the present invention.
2 is a view showing a driving disc portion 220 according to the first embodiment of the present invention.
3 is an exploded view of a variable power transmission apparatus according to a first embodiment of the present invention;
4 is a perspective view and a coupling view of a variable speed power transmission apparatus according to a first embodiment of the present invention;
5 is a sectional view of the load disk unit 120 and the driving disk unit 220 according to the first embodiment of the present invention.
6 is a diagram illustrating the operation principle of one cell in the coupling mode according to the first embodiment of the present invention.
7 is a diagram illustrating the operation principle of one cell in the non-coupling mode according to the first embodiment of the present invention.
8 is a diagram showing an overall operation principle in a coupling mode (upper diagram) and a non-coupling mode (lower diagram) according to the first embodiment of the present invention.
9 shows a drive disk unit 220 according to a second embodiment of the present invention.
10 is an exploded view of a variable power transmission apparatus according to a second embodiment of the present invention.
11 is a perspective view of a variable speed power transmission apparatus according to a second embodiment of the present invention.
12 is a diagram illustrating an overall operation principle in a coupled mode according to a second embodiment of the present invention;
13 is a diagram illustrating the operation principle of one cell in the coupling mode according to the second embodiment of the present invention.
FIG. 14 is a diagram showing an overall operation principle in a coupling mode (upper diagram) and a non-coupling mode (lower diagram) according to the third embodiment of the present invention; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, it should be noted that, in the drawings, the same components or parts have the same reference numerals as much as possible.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted so as to avoid obscuring the subject matter of the present invention.

The terms "about "," substantially ", etc. used to the extent that they are used herein are intended to approximate the numerical values when the manufacturing and material tolerances inherent in the meanings mentioned are presented, Absolute numbers are used to prevent unauthorized exploitation by unauthorized intruders of the mentioned disclosure.

The present invention is summarized as follows.

That is, the load disk unit 120 has a load shaft 110 connected to the center and connected to the load 100;

And a driving disc unit 220 coupled to the driving shaft 210 at the center thereof and connected to the motor 200,

The load disk unit 120 includes:

A load disk 121 made of a ferromagnetic material,

The driving disc unit 220 includes a driving-

A non-magnetic disk 1226 having a non-magnetic body and a center coupled with the driving shaft 210,

A permanent magnet 223 and a yoke 221 having an electromagnet in which a control current coil 225 is wound around the magnetized iron core 224,

The yoke (221)

A plurality of poles 221a, 221b, 221c, ..., which are arranged in a radial fashion and whose lower surfaces are coupled with the upper surface of the non-magnetic disk 1226,

And magnet receiving cells 221ab, 221bc, ... separated by the respective pawls 221a, 221b, 221c, ...,

Each of the magnet accommodating cells 221ab, 221bc, ... is provided with at least one permanent magnet and at least one electromagnet,

The lower end faces of the load disk poles 121a, 121b, 121c, ... are connected to the load magnetic coupling surfaces 122a, 122b, 122c,

The top surfaces of the radial pawls 221a, 221b, 221c, ... are driven magnetic coupling surfaces 222a, 222b, 222c,

The driving disc portion 220 is disposed at the lower end of the load disc portion 120,

A predetermined gap is formed between the load magnetic coupling surfaces 122a, 122b, 122c, ... and the drive magnetic coupling surfaces 222a, 222b, 222c,

And a power transmission speed is controlled by controlling a current of the control current coil (225).

In the present invention, the direction indications such as up, down, left, and right directions are for explaining with reference to the accompanying drawings, and therefore it is clarified that they are not related to the constitution of the invention. That is, the structure in which the load disk unit 120 is disposed at the lower end of the drive disk unit 220 is referred to as a relative positional relationship, As shown in FIG. 4, when the shaft is laid horizontally, the load disc portion 120 is disposed on the right side and the drive disc portion 220 is disposed on the left side. It does not limit the location configuration.

(Operation Principle)

The principle of operation used in the present invention will be described first with reference to Figs.

For convenience of explanation, when each pole (or a pole to be described later) is defined by a, b, c, etc., a slot (or cell, magnet, etc.) between each pole Pole), bc (between b and c pole), and so on. The following is an example.

The first conductor receiving slot 121ab and the first slot conductor 123ab are located between the first load pole 121a and the second load pole 121b

The second conductor receiving slot 121bc and the second slot conductor 123bc are located between the second load pole 121b and the third load pole 121c

The first magnet accommodating cell 221ab, the first permanent magnet 223ab, the first magnetization core 224ab and the first current control coil 225ab are disposed between the first pole 221a and the second pole 221b

The second magnet accommodating cell 221bc, the second permanent magnet 223bc, the second magnetized iron core 224bc and the second current control coil 225bc are disposed between the second pole 221b and the third pole 221c

At this time, the load magnetic coupling surfaces 122, the drive magnetic coupling surfaces 222a, 222b, 222c, ... are collectively referred to as driving magnetic coupling surfaces 122a, 122b, 122c, The permanent magnet 223 and the magnetized iron cores 224ab and 224bc are collectively referred to collectively as the magnetic coupling surface 222 and the respective permanent magnets 223ab and 223bc, The control current coils 225ab, 225bc, ... are collectively referred to as a control current coil 225. [

The symbols ⊙ and 표시된 shown in the figure indicate the current flow direction and are defined as follows.

⊙: Direction coming out of the ground based on the drawing reference

Ⓧ: Direction to penetrate the ground as a drawing reference

Referring to FIG. 5, the basic configuration for operation of the present invention is as follows.

A first slot conductor 123ab through which an induction current can flow at the lower center of the load disc 121 and a second slot conductor 123ab through which the first load 122a serving as a ferromagnetic protruding portion is provided on both sides of the first slot conductor 123ab. The pole 121a and the second load pole 121b are provided to constitute the load disk unit 120.

The first pole 221a and the second pole 221b which are ferromagnetic bodies are disposed at the lower ends of the load poles 121a and 121b and the driving magnetic coupling surfaces 222a and 222b, which are the upper surfaces of the pawls 221a and 221b, And a predetermined gap with the load magnetic coupling surfaces 122a and 122b which are the lower end surfaces of the load poles 121a and 121b. The lower end faces of the respective pawls 221a and 221b are joined to the nonmagnetic disk 226 which is a nonmagnetic material and the first permanent magnet 223ab, the first magnetized iron core 224ab, 1 control current coil 225ab. The positive pole of the first permanent magnet 223ab is joined to each of the pawls 221a and 221b and both ends of the first magnetized iron core 224ab are joined to the respective pawls 221a and 221b at the lower end of the first permanent magnet 223ab , The first control current coil 225ab is wound on the first magnetized iron core 224ab.

As described above, the structure between the first load pole 121a and the second load pole 121b and between the first pole 221a and the second pole 221b is the same as that between the second load pole 121b and the third load pole 121c and between the second pole 221b and the third pole 221c. The first magnet accommodating cells 221ab are defined by the first permanent magnets 223ab, 221bc, ..., and the first magnet accommodating cells 221ab are defined by the magnet accommodating cells 221ab, 221bc, ), A first magnetized iron core 224ab, and a first control current coil 225ab.

The present invention includes an electromagnet composed of a magnetized iron core 224 and a control current coil 225 to control the power transmission speed by controlling the current of the control current coil 225. [

The operation according to the current flow of the first control current coil 225ab in the first magnet accommodating cell 221ab is as follows.

- Non-bonded state -

When the current flowing in the control current coil 225 of the electromagnet is controlled such that the pole of the permanent magnet 223 bonded to one pole 221 and the pole of the magnetized core 224 of the electromagnet are formed opposite to each other, Gap between the permanent magnet 223 and the magnetized iron core 224 is stronger than air which is a paramagnetic material formed in an air gap between the magnet 122 and the drive magnetic coupling surface 222. Therefore, to form a magnetic circuit (non-coupling path).

7, when the S pole of the first permanent magnet 223ab is joined to the first pole 221a, the pole connected to the first pole 221a of the first magnetized iron core 224ab is connected to the N pole (The upper conductor of the first magnetized core 224ab is ⓧ, and the lower conductor is ⊙). At this time, the path of the magnetic flux is as follows.

N pole of the first permanent magnet 223ab → second pole 221b → S pole of the first magnetized iron core 224ab → N pole of the first magnetized iron core 224ab → first pole 221a → the S pole of the first permanent magnet 223ab

Therefore, since the magnetic coupling between the load magnetic coupling surfaces 122a and 122b and the drive magnetic coupling surfaces 222a and 222b is not formed, the load disc portion 120 and the drive disc portion 220 are magnetically decoupled condition ).

- Coupled state -

When the current flowing in the control current coil 225 of the electromagnet is controlled so that the pole of the permanent magnet 223 bonded to one pole 221 and the pole of the electromagnet magnetized core 224 are formed to be the same, Gap between the permanent magnet 223 and the load disk 121 (coupling path 1), the magnetization core 224 and the load disk 121 (coupling path 1) through the air-gap between the permanent magnet 223 and the drive magnetic coupling surface 222, (Coupling path 2).

6, when the S pole of the first permanent magnet 223ab is joined to the first pole 221a, the pole connected to the first pole 221a of the first magnetized iron core 224ab is connected to the S pole (The upper conductor of the first magnetized core 224ab is ⊙, and the lower conductor is ⓧ). At this time, the path of the magnetic flux is as follows.

Coupling path 1: N pole of first permanent magnet 223ab → second pole 221b → second driving magnetic coupling surface 222b → air gap → second load magnetic coupling surface 122b → second load pole ( 121b → load disk 121 → first load pole 121a → first load magnetic coupling surface 122a → first drive magnetic coupling surface 222a → first pole 221a → first permanent magnet 223ab ) S pole

Coupling path 2: N pole of first magnetization core 224ab → second pole 221b → second driving magnetic coupling surface 222b → air gap → second load magnetic coupling surface 122b → second load pole ( 121b → load disk 121 → first load pole 121a → first load magnetic coupling surface 122a → first drive magnetic coupling surface 222a → first pole 221a → first magnetization core 224ab ) S pole

The induction current flows in the first slot conductor 123ab by the closed magnetic path formed in this way. (⊙ direction) In addition, the second load magnetic coupling surface 122b is an S pole, the first load magnetic coupling surface 122a is an N pole And serves as an electromagnet to be formed. Therefore, magnetic coupling is formed between the load magnetic coupling surfaces 122a and 122b and the drive magnetic coupling surfaces 222a and 222b.

With this principle, the load disk unit 120 and the drive disk unit 220 are magnetically coupled to each other.

A control device (not shown) for controlling the current flow may be additionally provided in the present invention and is similar to the operation principle of a general electromagnet, so a detailed description of a control method, a direction of an electric pole according to a current flow, and the like will be omitted.

A preferred embodiment of the present invention will be described based on the above-mentioned operation principle.

The first embodiment of the present invention is a sectional structure in which one drive disc portion 220 having a central axis on a straight line and one load disc portion 120 are magnetically coupled to each other, Respectively. In the first embodiment, the nonmagnetic disk 226 is a nonmagnetic disk 1226 constituting the bottom surface of the driving disk unit 220, which can be seen in FIG.

The second embodiment of the present invention is a two-sided embodiment, which comprises a single drive disc portion 220 having a central axis on a straight line and two load disc portions 120 and 120 ' And the load disk unit 120 and the sub-load disk unit 120 'are opposed to each other to be magnetically coupled to each other, as shown in FIGS. In the second embodiment, the nonmagnetic disk 226 is a nonmagnetic disk 2226 constituting a central pole of the driving disk unit 220, which can be seen in FIG.

( First Embodiment )

The variable speed power transmission apparatus using magnetic coupling according to the present invention comprises a load disk unit 120 and a drive disk unit 220.

1 is a view showing a load disk unit 120 according to a first embodiment of the present invention. 1B, the load disk unit 120 includes a load shaft 110 coupled to the load 100 and a load disk 121, an induction current coil 123, .

The load disk 121 is a ferromagnetic body and a plurality of load disk poles 121a, 121b, 121c, ... and conductor receiving slots 121ab, 121bc, ... are alternately radially formed on one surface. That is, when the flat surface of the load disk 121 is referred to as a bottom surface, the load disk poles 121a, 121b, 121c, ..., and 123d protruding radially from the center of the load disk 121z are formed on the upper surface. Is formed. The grooves formed between the protruding load disc poles 121a, 121b, 121c, ... are conductor receiving slots 121ab, 121bc, .... Therefore, when the load disk 121 is viewed from the side (x direction or y direction) with the upside and downside of the load disk 121 being in the z direction, the protrusion and the groove Are alternately formed. That is, along the outer circumference of the load disk 121, a first load pole 121a as a protrusion, a first conductor receiving slot 121ab as a groove, a second load pole 121b as a protrusion, a second conductor receiving slot 121bc as a groove, A third load pole 121c as a protruding portion, and so on.

As shown in FIG. 1A, the induction current coil 123 is a metal conductor which is coupled to the conductor receiving slot to form a closed circuit, and an induced current is generated by an external magnetic field. A plurality of slot conductors 123ab, 123bc , ...), an inner conductor 123r, and an outer conductor 123s.

Each of the slot conductors 123ab, 123bc, ... is a linear conductor radially placed so as to correspond to the respective conductor receiving slots 121ab, 121bc, And a circular outer circumference conductor 123s is joined to the other end of each of the slot conductors 123ab, 123bc ... so as to form a wheel-shaped closed circuit 123r. do.

As mentioned above in the description of the principle of operation, the induction current coil 123 is caused to induce a current by a magnetic field formed through a gap in the magnetic coupling mode, thereby forming a magnetic flux path around the slot conductors 123ab, 123bc, ... .

FIG. 2 is a view showing a driving disc unit 220 according to the first embodiment of the present invention. As shown in FIG. 2, the driving disc unit 220 is composed of a nonmagnetic disc 1226 and a yoke 221.

The nonmagnetic disk 1226 is a nonmagnetic body and its center is coupled with the drive shaft 210 to form the bottom surface of the drive disk unit 220.

The yoke 221 is a portion where a permanent magnet 223 and an electromagnet in which a control current coil 225 is wound around the magnetizing iron core 224 are provided and a plurality of pawls 221a, 221b, 221c, . Each of the pawls 221a, 221b, 221c, ... is radially arranged with respect to the center portion 221z of the nonmagnetic disk, and the lower end surface thereof is engaged with the upper end surface of the nonmagnetic disk 1226.

Each of the magnet accommodating cells 221ab, 221bc, ... has one of the magnet accommodating cells 221ab, 221bc, ..., and the other of the magnet accommodating cells 221ab, 221bc, Permanent magnets 223 and at least one electromagnet 224, 225 are provided.

In this embodiment, the S pole of the first permanent magnet 223ab is connected to the first pole 221a, and the N pole is connected to the second pole 221b on the upper side of the magnet accommodating cell with reference to the first magnet accommodating cell 221ab A first magnetized iron core 224ab having both ends connected to the pawls 221a and 221b and a first control current coil 225ab wound on the iron core are attached to the lower end of the first permanent magnet 223ab, .

However, the relationship between the vertical position of the permanent magnet and the position of the electromagnet can be changed as shown in Fig. 14, and the same operation principle is applied, so that it is clarified that the positional relationship between the electromagnet and the permanent magnet and the quantity thereof are not limited.

The lower end faces of the load disc poles 121a, 121b, 121c, ... are connected to the upper end faces of the load magnetic coupling surfaces 122a, 122b, 122c, ..., the radial pawls 221a, 221b, 221c, The drive magnetic coupling surfaces 222a, 222b, 222c, ... are preferably formed as flat cut surfaces so that a constant magnetic flux path can be formed.

The driving disc portion 220 is disposed at the lower end of the load disc portion 120,

A predetermined gap is formed between the load magnetic coupling surfaces 122a, 122b, 122c, ... and the drive magnetic coupling surfaces 222a, 222b, 222c, .... FIGS. 5 and 8 show plan views of the structure along the outer periphery of the load disk unit 120 and the drive disk unit 220 combined in this manner.

Referring to FIG. 8, permanent magnets 223ab, 223bc,..., 223b are provided in the magnet accommodating cells 221ab, 221bc, ..., and are connected to the poles 221a, 221b, 221c, ... of the yoke. ...) are arranged so that the poles of two permanent magnets coupled to either pole of the plurality of poles are the same. That is, the first permanent magnet 223ab coupled to the second pole 221b and the second permanent magnet 223bc are disposed to be coupled to each other with the S pole facing, and the second permanent magnet 223ab coupled to the third pole 221c, And the third permanent magnets 223cd are arranged so as to face each other with N poles. This is a design in which the magnetic flux path formed by each permanent magnet is directed toward the load disk poles 121a, 121b, 123c, ... or toward magnetized iron cores 224ab, 225bc, ... of the electromagnets.

FIG. 3 is an exploded view of a variable power transmission apparatus according to a first embodiment of the present invention, and FIG. 4 is a perspective view and a coupling view. The motor 200 is connected to the drive shaft 210 and the drive disc 220 from the left side of FIG. 3 and integrally rotates so that the load 100, the load shaft 110, the housing 130, The load disc portion 120, the second housing surface 132, and the bearing 140 are combined and rotated integrally. The load shaft 110 is coupled to the center of the first surface 131 of the housing 130 and the load disc portion 120 is coupled to the left side of the first surface 131 of the housing. A bearing 140 is provided at the center of the housing second surface 132 to support the drive shaft 210 passing therethrough.

That is, referring to the perspective view (left side) of FIG. 4, the driving disc portion 220 is rotated by the driving shaft 210 at the driving speed Vs of the motor 200. In this case, when the current of the control current coil 225 is controlled in the coupling mode, the driving magnetic coupling surface 222 and the load magnetic coupling surface 122 are magnetically coupled to each other. As the driving disc portion 220 rotates, (120) also rotates. However, the speed is not physically fully coupled but slip occurs like a fluid coupling, resulting in a motor speed drop. 8, the rotational speed of the load disc portion 120 is Vs (1-s) with respect to the rotational speed Vs of the driving disc portion 220. (s is a slip)

When the current control of the control current coils 225ab, 225bc, ... per magnet accommodating cell 221ab, 221bc, ... is individually performed, the drive magnetic coupling surface 222 and the load magnetic coupling surface 122 The magnetic coupling strength can be adjusted.

For example, when the currents of the control current coils 225ab, 225bc, ... are caused to flow in a certain direction so that the electromagnets of all the magnet accommodating cells 221ab, 221bc, ... are operated in the coupling mode, The load magnetic coupling surfaces 122a, 122b, 122c, ... are magnetically coupled with each other to cause less slip (s1). Therefore, the load can be rotated at a speed of Vs (1-s1) close to the driving speed Vs.

When the current of the control current coil 225bc is made to flow in a direction opposite to the coupling mode so that the electromagnets of the portion 221bc of the magnet accommodating cells 221ab, 221bc, ... operating in the coupling mode operate in the non-coupling mode The magnetic coupling between the driving magnetic coupling surfaces 222b and 222c and the load magnetic coupling surfaces 122b and 122c of the corresponding cell 221bc is released to cause further slip (s2, where s1 <s2). Therefore, the load can be rotated at a speed of Vs (1-s2) which is much slower than the driving speed Vs.

On the other hand, when the currents of the control current coils 225ab, 225bc, ... are caused to flow in the direction opposite to the coupling mode so that the electromagnets of all the magnet accommodating cells 221ab, 221bc, The magnetic coupling between the magnetic coupling surfaces 222a, 222b, 222c, ... and the load magnetic coupling surfaces 122a, 122b, 122c, ... is released and the rotational force of the motor 200 is no longer applied to the load disk portion 120 , And the rotation of the load 100 is stopped.

Taken together, when the motor rotational speed Vs and the load rotational speed Vs (1-s)

Motor 200, drive shaft 210, and drive disc unit 220 are integrally rotated

The load 100, the load shaft 110, the load disc portion 120, the housing 130,

( Second Embodiment )

The load disk unit 120, the driving disk unit 220, and the sub-load disk unit 120 ', which are vertically inverted in the same structure as the load disk unit 120, according to another embodiment of the present invention. However, the sub-load disk unit 120 'has a hole 120h' formed at its center as shown in FIG. 1 (c) so that the drive shaft 210 passes through the sub-load disk unit 120 '.

FIG. 9 is a view showing a driving disk unit 220 according to a second embodiment of the present invention.

As shown in FIG. 9, the driving disc unit 220 is composed of a nonmagnetic disc 2226 and a yoke 221.

The nonmagnetic disk 2226 is a nonmagnetic body and the center of the driving disk unit 220 is connected to the driving shaft 210. The diameter of the nonmagnetic disk 2226 is smaller than the diameter of the load disk 121.

The yoke 221 is a portion where a permanent magnet 223 and an electromagnet in which a control current coil 225 is wound around the magnetizing iron core 224 are provided and a plurality of pawls 221a, 221b, 221c, . The respective pawls 221a, 221b, 221c, ... are radially arranged with respect to the center of the non-magnetic disk 221z, and the inner side is coupled to the outer side of the non-magnetic disk 2226.

Each of the magnet accommodating cells 221ab, 221bc, ... has one of the magnet accommodating cells 221ab, 221bc, ..., and the other of the magnet accommodating cells 221ab, 221bc, Permanent magnets 223 and at least one electromagnet 224, 225 are provided. Preferably two permanent magnets 223 and 223 'and one electromagnet 224 and 225 between them as shown in FIGS.

In this embodiment, the S pole of the first permanent magnet 223ab is connected to the first pole 221a, and the N pole is connected to the second pole 221a on the upper side of the magnet accommodating cell with reference to the first magnet accommodating cell 221ab The S pole of the first sub-permanent magnet 223ab 'is connected to the first pole 221a and the N pole is connected to the second pole 221b at the lower end of the magnet accommodating cell, and two permanent magnets A first magnetized iron core 224ab having both ends connected to the pawls 221a and 221b and a first control current coil 225ab wound on the iron core are positioned between the electromagnets 223ab and 223ab '

However, the same operation principle is applied even if the relationship between the up-down position and the quantity of the permanent magnet and the electromagnet is changed.

The lower end faces of the load disk poles 121a, 121b, 121c, ... are connected to the load magnetic coupling surfaces 122a, 122b, 122c,

The top surfaces of the sub-load disk poles 121a ', 121b', 121c ', ... are connected to the sub-load magnetic coupling surfaces 122a', 122b ', 122c'

The top surfaces of the radial pawls 221a, 221b, 221c, ... are connected to the driving magnetic coupling surfaces 222a, 222b, 222c, ...,

The lower end surfaces of the radial pawls 221a, 221b, 221c, ... are sub-drive magnetic coupling surfaces 222a ', 222b', 222c ', ... formed as flat cut surfaces so that a constant magnetic flux path can be formed. .

The drive disc portion 220 is disposed at the lower end of the load disc portion 120 and the sub load disc portion 120 'is disposed at the lower end of the drive disc portion 220. At this time,

A predetermined air gap is formed between the load magnetic coupling surfaces 122a, 122b, 122c, ... and the drive magnetic coupling surfaces 222a, 222b, 222c,

Gap between the sub-load magnetic coupling surfaces 122a ', 122b', 122c ', ... and the sub-drive magnetic coupling surfaces 222a', 222b ', 222c' . FIG. 12 is a plan view of the structure along the outer periphery of the load disk unit 120, the drive disk unit 220, and the sub-load disk unit 120 combined in this manner.

Referring to FIG. 12, permanent magnets 223ab, 223bc,..., And 223c are provided in the magnet accommodating cells 221ab, 221bc, ..., and the poles 221a, 221b, 221c,. ..., 223ab ', 223bc', ...) are arranged so that the poles of the four permanent magnets coupled to any one of the poles are the same. That is, the first permanent magnet 223ab, the first sub-permanent magnet 223ab ', the second permanent magnet 223bc, and the second sub-permanent magnet 223bc', which are coupled to the second pole 221b, A second sub-permanent magnet 223bc ', a third permanent magnet 223cd, and a third sub-permanent magnet 223cd', which are disposed to face each other and are coupled to the third pole 221c, ) Are arranged so as to face each other with N poles facing each other. This is a design for preventing the magnetic flux path formed by each permanent magnet from being offset.

10 is an exploded view of a variable speed power transmission apparatus according to a second embodiment of the present invention, and Fig. The motor 200, the drive shaft 210 and the drive disk unit 220 are combined and rotated integrally from the left side of FIG. 10 and the load 100, the load shaft 110, the housing 130, The load disk unit 120, the sub-load disk unit 120 ', the housing second surface 132, and the bearing 140 are combined and rotated integrally. The load shaft 110 is coupled to the center of the first surface 131 of the housing 130 and the load disc 120 is coupled to the left side of the first surface 131 of the housing. A sub-load disc portion 120 'is coupled to the right side of the housing second side 132 and a bearing 140 is provided at the center of the second side 132 of the housing to support the drive shaft 210 passing therethrough.

That is, referring to the perspective view of FIG. 11, the driving disc portion 220 is rotated by the driving shaft 210 at the driving speed Vs of the motor 200. In this case, when the current of the control current coil 225 is controlled in the coupling mode, the driving magnetic coupling surface 222 and the load magnetic coupling surface 122 and the sub-driving magnetic coupling surface 222 ' ', So that the load disk unit 120 and the sub-load disk unit 120' rotate as the driving disk unit 220 rotates. However, the speed is not physically fully coupled but slip occurs like a fluid coupling, resulting in a motor speed drop. 12, the rotational speed of the load disk unit 120 and the sub-load disk unit 120 'is Vs (1-s) with respect to the rotational speed Vs of the driving disk unit 220. (s denotes a slip )

When the current control of the control current coils 225ab, 225bc, ... per magnet accommodating cell 221ab, 221bc, ... is individually performed, the drive magnetic coupling surface 222, the load magnetic coupling surface 122, The magnetic coupling strength at the sub-drive magnetic coupling surface 222 'and the sub-load magnetic coupling surface 122' can be adjusted. The detailed control method is the same as that of the first embodiment, but the sub-drive magnetic coupling surface 222 ', which operates as in the drive magnetic coupling surface 222 and the load magnetic coupling surface 122 as shown in FIG. 13, Coupling at the load magnetic coupling surface 122 'is added. Therefore, the currents of the control current coils 225ab, 225bc, ... are individually controlled to adjust the load rotation speed.

The present invention has the following effects.

By applying the power connection method between the motor and the load through magnetic coupling, it is possible to freely adjust the rotational speed of the load driven by the motor by adjusting the magnetic force of the permanent magnet by the electromagnetic method, Minimizing the power usage of the driven system and minimizing installation and maintenance costs with a simple structure.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be clear to those who have knowledge.

100: Load
110: Load shaft
120: load disk portion
121: load disk
121a: first load pole
121ab: slot for receiving first conductor
121b: second load pole
121bc: second conductor receiving slot
121c: third load pole
122: load magnetic coupling surface
122a: first load magnetic coupling surface
122b: second load magnetic coupling surface
122c: third load magnetic coupling surface
123: Induction current coil
123ab: first slot conductor
123bc: second slot conductor
123r: inner conductor
123s: Outer conductor
130: housing
131: housing first side
132: housing second side
140: Bearings
200: motor
210: drive shaft
220: driving disc portion
221: York
221a: first pole
221ab: first magnet receiving cell
221b: second pole
221bc: second magnet receiving cell
221c: third pole
222: drive magnetic coupling surface
222a: first drive magnetic coupling surface
222b: second drive magnetic coupling surface
222c: third drive magnetic coupling surface
223: permanent magnet
223ab: first permanent magnet
223bc: second permanent magnet
224: Magnetization iron core
224ab: 1st magnetized iron core
224bc: Second magnetization iron core
225: Control current coil
225ab: first control current coil
225bc: second control current coil
226: Non-magnetic disk
1226: Non-magnetic disk of the sectional type embodiment
2226: Non-magnetic disk of double-sided embodiment

Claims (3)

A load disc portion 120 coupled to the load shaft 110 at the center thereof and connected to the load 100;
And a driving disc unit 220 coupled to the driving shaft 210 at the center thereof and connected to the motor 200,

The load disk unit 120 includes:
A load disk 121 made of a ferromagnetic material,

The driving disc unit 220 includes a driving-
A non-magnetic disk 1226 having a non-magnetic body and a center coupled with the driving shaft 210,
A permanent magnet 223 and a yoke 221 having an electromagnet in which a control current coil 225 is wound around the magnetized iron core 224,

The yoke (221)
A plurality of poles 221a, 221b, 221c, ..., which are arranged in a radial fashion and whose lower surfaces are coupled with the upper surface of the non-magnetic disk 1226,
And magnet receiving cells 221ab, 221bc, ... separated by the respective pawls 221a, 221b, 221c, ...,
Each of the magnet accommodating cells 221ab, 221bc, ... is provided with at least one permanent magnet and at least one electromagnet,

The lower end faces of the load disk poles 121a, 121b, 121c, ... are connected to the load magnetic coupling surfaces 122a, 122b, 122c,
The top surfaces of the radial pawls 221a, 221b, 221c, ... are driven magnetic coupling surfaces 222a, 222b, 222c,

The driving disc portion 220 is disposed at the lower end of the load disc portion 120,
A predetermined gap is formed between the load magnetic coupling surfaces 122a, 122b, 122c, ... and the drive magnetic coupling surfaces 222a, 222b, 222c,

And the power transmission speed is controlled by controlling the current of the control current coil (225).

The method according to claim 1,

The load disk unit 120 includes:
A load disk 121 having a plurality of load disk poles 121a, 121b, 121c, ... and conductor accommodating slots 121ab, 121bc, ... formed alternately in a radial shape,
And an induction current coil 123 coupled to the conductor receiving slot as a metal conductor to form a closed circuit,

The induction current coil 123,
A plurality of slot conductors 123ab, 123bc, ... provided corresponding to the conductor receiving slots 121ab, 121bc, ...,
An inner conductor 123r joined to one end portion of the slot conductors 123ab, 123bc, ... facing the central portion,
And an outer circumferential conductor 123s joined to the other end of the slot conductors 123ab, 123bc, ...,


The permanent magnets 223ab, 223bc, ... provided in the respective magnet accommodating cells 221ab, 221bc, ... are connected to the poles 221a, 221b, 221c, ... of the yoke,
Two permanent magnets 223ab and 223bc coupled to one of the pawls 221a, 221b, 221c, ... are arranged so that the same poles face each other,

By controlling the currents flowing in the respective control current coils 225ab, 225bc, ...
Wherein the power transmission speed is controlled according to the degree of magnetic coupling between the load disk unit (120) and the drive disk unit (220).

The method according to claim 1,
And a sub-load disk unit 120 'which is inverted in the same manner as the load disk unit 120,

The nonmagnetic disk 1226 is a nonmagnetic disk 2226 whose diameter is smaller than the diameter of the load disk 121,
And the outer side surface thereof is engaged with the inner side surface facing the center of the plurality of pawls 221a, 221b, 221c, ...,

The lower end faces of the load disk poles 121a, 121b, 121c, ... are connected to the load magnetic coupling surfaces 122a, 122b, 122c,
The top surfaces of the sub-load disk poles 121a ', 121b', 121c ', ... are connected to the sub-load magnetic coupling surfaces 122a', 122b ', 122c'
The top surfaces of the radial pawls 221a, 221b, 221c, ... are connected to the driving magnetic coupling surfaces 222a, 222b, 222c, ...,
The lower end faces of the radial pawls 221a, 221b, 221c, ... are sub-drive magnetic coupling surfaces 222a ', 222b', 222c ', ...,

The driving disc portion 220 is disposed at the lower end of the load disc portion 120,
The sub-load disk unit 120 'is disposed at the lower end of the driving disk unit 220,
A predetermined air gap is formed between the load magnetic coupling surfaces 122a, 122b, 122c, ... and the drive magnetic coupling surfaces 222a, 222b, 222c,
Gap between the sub-load magnetic coupling surfaces 122a ', 122b', 122c ', ... and the sub-drive magnetic coupling surfaces 222a', 222b ', 222c' As a result,

By controlling the currents flowing in the respective control current coils 225ab, 225bc, ...
Wherein the power transmission speed is controlled according to the degree of magnetic coupling between the load disk unit (120) and the drive disk unit (220).
KR1020160005458A 2016-01-15 2016-01-15 Variable speed power transmission using magnetic coupling KR101783687B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160005458A KR101783687B1 (en) 2016-01-15 2016-01-15 Variable speed power transmission using magnetic coupling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160005458A KR101783687B1 (en) 2016-01-15 2016-01-15 Variable speed power transmission using magnetic coupling

Publications (2)

Publication Number Publication Date
KR20170085829A KR20170085829A (en) 2017-07-25
KR101783687B1 true KR101783687B1 (en) 2017-10-10

Family

ID=59422762

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020160005458A KR101783687B1 (en) 2016-01-15 2016-01-15 Variable speed power transmission using magnetic coupling

Country Status (1)

Country Link
KR (1) KR101783687B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102229129B1 (en) * 2020-07-27 2021-03-18 주식회사 태영팬가드 Non-contact no-load power transmit device

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102180705B1 (en) * 2018-12-19 2020-11-20 주식회사 포스코 Variable speed magnetic coupling
CN111711338A (en) * 2020-05-11 2020-09-25 南京玛格耐特智能科技有限公司 Speed-regulating horizontal air-cooled permanent magnet coupler
CN111981025B (en) * 2020-08-07 2022-04-08 中国石油大学(华东) Magnetic control suction disc device and using method thereof
CN113765330B (en) * 2021-08-09 2024-06-04 自然资源部第三海洋研究所 Deep sea motor based on magnetic coupling transmission and transmission method
CN117498646A (en) * 2023-12-12 2024-02-02 东莞市素派驱动科技有限公司 Magnetic conduction ultra-silent speed changing device of submersible motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102229129B1 (en) * 2020-07-27 2021-03-18 주식회사 태영팬가드 Non-contact no-load power transmit device
WO2022025307A1 (en) * 2020-07-27 2022-02-03 주식회사 태영팬가드 Non-contact no-load power transmission device

Also Published As

Publication number Publication date
KR20170085829A (en) 2017-07-25

Similar Documents

Publication Publication Date Title
KR101783687B1 (en) Variable speed power transmission using magnetic coupling
JP6919631B2 (en) Magnetic generator of electric motor and manufacturing method of magnet
US7535145B2 (en) Axial air gap-type electric motor
RU2388132C2 (en) Brushless electric machine
KR100674286B1 (en) Rotary electric motor having at least two axially air gaps separating stator and rotor segments
US7999432B2 (en) Field controllable rotating electric machine system with magnetic excitation part
JP2020523792A (en) Electromagnetically switchable permanent magnetic device
US20090045691A1 (en) Field controllable rotating electric machine system with magnetic excitation part
JP4337989B1 (en) Magnetic excitation variable magnetic rotating machine system with magnet excitation
KR20030009035A (en) Motor having characteristic structure in armature and disc apparatus
JP2009050068A (en) Magnetic flux shunt controlling dynamo-electric machine system
US6469412B1 (en) Universal electric motor with variable air gap
KR20050004288A (en) Rotary electric motor having a plurality of shifted stator poles and/or rotor poles
CN111030402B (en) Directional silicon steel sheet axial magnetic field motor
JP7277068B2 (en) Motor with rotational force output device and rotational starting force assist
JPH1155907A (en) Electromagnetic driver having moving permanent magnet
KR100440514B1 (en) Axial Core Type Brushless DC Motor
KR20150114879A (en) A rotor and a motor using the same
WO2012043446A1 (en) Dynamo-electric machine
JP4238298B1 (en) Magnetic flux shunt control rotating electrical machine system
JP2016208737A (en) Brake device
JP2004104853A (en) Motor
JP2014105796A (en) Clutch mechanism and manufacturing method of permanent magnet for clutch mechanism
CN110138161A (en) Outer disc type motor with fence type stator
KR100429616B1 (en) Rotary linear motor

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant