WO2013180371A1

WO2013180371A1 - Electromagnetic air compressor

Info

Publication number: WO2013180371A1
Application number: PCT/KR2013/000077
Authority: WO
Inventors: 임주생
Original assignee: 주식회사 미래브이씨
Priority date: 2012-05-30
Filing date: 2013-01-07
Publication date: 2013-12-05
Also published as: KR20130134345A

Abstract

The present invention relates to an electromagnetic air compressor which causes a change in the polarity of an electromagnet by means of a change in the current circuit using an inverter, generates high load power using attraction and repulsion generated by a difference in polarity through a permanent magnet, and compresses air using the power source to generate high pressure compressed air. The present invention includes: a first cylinder and a second cylinder which are hollow and are arranged parallel to each other in the axial direction; a first piston and a second piston which have magnets of different polarities and are disposed in a linearly movable manner while being in internal contact with the cylinders; a first central body and a second central body which are inserted in an airtight manner and are in contact with each other between the first and second cylinders; an electromagnet part which is coaxially inserted between the first and second central bodies and forms a magnetic force between the magnet and the electromagnet portion when power is supplied; and a first side cover and a second side cover which are inserted in an airtight manner into the outer side end portions of the first and second cylinders and are coupled to each other to support the cylinder and the central body therebetween. A magnetic force between the magnet and the electromagnet part causes the piston to reciprocate along the inner wall of the cylinder so as to generate compressed air.

Description

Electromagnetic air compressor

The present invention relates to an electromagnetic air compressor that compresses air to produce high pressure compressed air.

Generally, a compressor is divided into a refrigerant compressor that compresses a predetermined refrigerant to form high temperature and high pressure, and an air compressor that compresses air in the atmosphere to form compressed air. Among them, the air compressor is configured as a compressor main body of a system that stores the generated compressed air at a high pneumatic pressure and supplies it to the corresponding actuator as needed. The system stores the compressed compressor body and the generated compressed air. It is configured to include air tanks and is used in various fields such as factories and vehicles to which an air system is applied.

As is known, air compressors come in a variety of varieties, typically rotary and piston types. The rotary type air compressor is configured to transport air by rotating the rotor without a valve for intake and delivery of air, and is suitable for use when low flow and high pressure lift is required, and the structure is simple. Easy to handle In addition, the piston-type air compressor is configured to suck and discharge air by the reciprocating motion of the piston, and generates compressed air in the order of suction, compression, and exhaust, and is relatively superior to other air compressors.

The conventional rotary type and piston type air compressors use oil to prevent mechanical friction and improve airtight performance. There is a problem in that compressed air discharged by the oil is mixed with oil dust to reduce air cleanliness.

The present invention has been made to solve the above-mentioned problems, by electro-magnetically changing the polarity of the center rod periodically to repeatedly create an alternating force and repulsive force acting between the piston and the center rod to generate the compressed air It is an object to provide a conventional air compressor.

In order to achieve the above object, the present invention, the first cylinder and the second cylinder is arranged side by side in the axial direction; A first piston and a second piston having magnets of different polarities and installed in the cylinder in a linearly movable manner; A first center body and a second center body which are hermetically inserted to face each other between the first and second cylinders; An electromagnet portion inserted coaxially between the first and second center bodies and forming a magnetic force between the magnet when the electric power is supplied; And a first side cover and a second side cover which are hermetically inserted at the outer ends of the first and second cylinders, and are coupled to each other to support the cylinder and the center body therebetween. Provided is an electromagnetic air compressor characterized by a magnetic force between the piston to reciprocate along the inner wall of the cylinder to produce compressed air.

Preferably, the electromagnet portion is composed of a cylindrical core made of ferromagnetic material and a conductive wire wound on the core, and an inverter connected to supply the alternating DC power to AC power is electrically connected to the conductive wire to periodically change the polarity of the core. It is characterized by.

The first and second pistons are configured to be integrally connected by a center rod penetrating the electromagnet portion in the axial direction, and the piston is provided with a piston o-ring for increasing the airtight performance between the cylinders.

The first and second center bodies are provided with inlets and outlets for air inlet and outlet of each cylinder, and check valves are provided for fluid flow in only one direction.

In addition, the side cover is provided with a damper member for mitigating the impact impact of the piston.

The electromagnetic air compressor according to the present invention has the following advantages.

1. Through efficient use of manpower and repulsive force formed between the piston and the center rod, it is possible to generate various air pressures from low pressure to high pressure, thereby increasing energy conversion efficiency compared to the prior art by miniaturizing and optimizing the air system. have.

2. The air cleanliness is improved by not using the lubricating oil used to prevent mechanical friction in the conventional air compressor, so that no separate filtering system is required.

3. When applied to vehicles, it can reduce fuel consumption and improve environmental friendliness.

4. The magnetocaloric effect and the magnetic cooling effect can be obtained by using the electromagnet, and the compressed air can be cooled without a separate air cooler.

1 is an exploded perspective view showing an electromagnetic air compressor according to an embodiment of the present invention

2 and 3 is an exploded perspective view showing a part of the configuration of the electromagnetic air compressor according to an embodiment of the present invention

4 is a perspective view showing a combined electromagnetic air compressor according to an embodiment of the present invention

5 is a cross-sectional view taken from the line A-A of FIG.

6 is a circuit diagram illustrating a system including an electromagnetic air compressor according to an embodiment of the present invention.

7a and 7b is a view showing the operating state of the electromagnetic air compressor according to an embodiment of the present invention

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Electromagnetic air compressor according to the present invention is a piston-type reciprocating air compressor, by using an inverter to promote the change of the polarity of the electromagnet through the change of the current circuit and to use the attraction and the force generated by the difference in polarity with the permanent magnet It generates high load power and compresses air with this power source to generate high pressure compressed air, and is configured to generate compressed air of various pressures from low pressure to high pressure.

As shown in FIG. 1, an electromagnetic air compressor 10 according to an exemplary embodiment of the present invention includes a hollow first cylinder 11 and a second cylinder 12; A first piston 13 and a second piston 14 which are internally inscribed into the first and

second cylinders

11 and 12 so as to be linearly inserted and installed therein; A first center body 21 and a second center body 22 which are installed in a gastight manner to face each other between the first and

second cylinders

11 and 12; An electromagnet portion 32 which is coaxially hermetically inserted between the first and

second center bodies

21 and 22; And a first side cover 41 and a second side cover 42 which are hermetically installed at outer ends of the first and

second cylinders

11 and 12.

The first and

second cylinders

11 and 12 are formed in a cylindrical shape using a nonmagnetic material such as aluminum, and are arranged side by side with the

center bodies

21 and 22 therebetween in the axial direction as shown in FIG. 5. The first and

second pistons

13 and 14 have

magnets

15 and 16 formed of permanent magnets having different polarities, and the

piston snap rings

17 and 16 are provided to prevent the

magnets

15 and 16 from being separated. 18) is installed. In addition, piston o-

rings

19 and 20 are installed on the outer circumferential surfaces of the

pistons

13 and 14. The piston o-

rings

19, 20 increase the airtight performance between the

pistons

13, 14 and the

cylinders

11, 12.

The electromagnet part 32 is composed of a cylindrical core 33 made of a ferromagnetic material and a conductive wire 24 wound around the core 33. A magnetic field is formed when a current flows through the conductive wire 34 wound in a cylindrical shape. As a result, the core 33 is magnetized to act as a magnet. The electromagnet part 32 is supported between the first and

second center bodies

21 and 22, which are hermetically sandwiched between the first and

second cylinders

11 and 12, and is supported in a built-in form. It is configured to be fixed between (11, 12), and the attraction force and repulsive force is formed between the magnets (15, 16) of the piston (13, 14) as the current flows through the conductive wire (34), the core 33 is magnetized Done.

As shown in FIG. 6, the electromagnet part 32 is connected to and installed with an inverter 52 that transmits and supplies DC power supplied from the DC power source 51 to AC power.

Accordingly, the electromagnet portion 32 periodically changes the polarity of the core 33 due to the alternating current power supplied to the conductive wire through the inverter 52, and attracts the magnets between the

magnets

15 and 16 of the

pistons

13 and 14. And the repulsive force is alternately formed, so that the first and

second pistons

13 and 14 reciprocate along the inner walls of the

cylinders

11 and 12 as shown in FIGS. 7A and 7B. Compressed air is generated by compressing the internal air of.

That is, the inverter 52 serves to periodically change the polarity of the core 33 of the electromagnet portion 32 as a result. The compressed air generated in the

cylinders

11 and 12 is stored in the air tank 56 via the air separator 54 and the air filter 55 as shown in FIG. 6, and is supplied to the actuator as necessary. The actuator operates the machine by performing mechanical work using the supplied compressed air.

In addition, the inverter 52 may be controlled by the controller 53 connected to change the frequency of the alternating current output, and by controlling the period of polarity change of the core 33 to vary the air pressure from low to high pressure It allows the creation of compressed air having In addition, the electromagnet portion 32 includes a center bush 35 disposed between the conductive wire 34 and the core 33 to insulate the conductive wire 34 from the core 33.

Meanwhile, as shown in FIG. 5, the first and

second pistons

13 and 14 are integrally connected by a center rod 38 penetrating the core 33 of the electromagnet portion 32 in the axial direction. It is composed.

Both ends of the center rod 38 are press-fitted to the upper ends of the first and

second pistons

13 and 14 so as to integrally connect the first and

second pistons

13 and 14, and the first and second pistons. Support (13,14) for stable linear movement. In addition, when the center rod 38 linearly moves together with the

pistons

13 and 14, the center rod 38 is moved while maintaining the airtightness of the

cylinders

11 and 12 by the core O-ring 36 installed on the inner wall surface of the core 33. .

As shown in FIG. 5, the first and

second center bodies

21 and 22 have

inlets

23 and 25 and outlets 24 for inlet and outlet air of the first and

second cylinders

11 and 12, respectively. , 26 are formed. The

inlets

23 and 25 and the

outlets

24 and 26 serve as air passages connecting the inside and the outside of the

cylinders

11 and 12, and each of the

inlets

23 and 25 and the

outlets

24 and 26. Check valves 27 to 30 that allow fluid flow in only one direction are provided. Accordingly, only the air supplied into the

cylinders

11 and 12 is introduced into the

inlets

23 and 25, and only the compressed air generated inside the

cylinders

11 and 12 is discharged into the

outlets

24 and 26, and the inlet 23 It is possible to prevent the air discharge into the (25) and the air inflow into the discharge port (24, 26).

The first and

second center bodies

21 and 22 are formed to have stepped ends so as to be inserted into respective cylinders, and have a structure in which a central portion thereof is axially drilled.

The first and

second center bodies

21 and 22 are formed in a shape in which the stepped portions are hermetically inserted into one end of each

cylinder

11 and 12 and the other end faces face each other, and are coaxially in the center thereof. The opposite ends of the first and

second cylinders

11 and 12 are sealed together with the electromagnet portion 32 and the center rod 38 penetrating the electromagnet portion 32.

In addition, between the

center body

21 and 22 and the

cylinders

11 and 12 and between the

center body

21 and 22 and the core 33 of the electromagnet part 32, a center body o-ring for increasing the airtight performance ( 31) and the electromagnet portion O-ring 37 is mounted.

On the other hand, the other ends of the

cylinders

11 and 12, that is, the outer ends of the first and

second cylinders

11 and 12 arranged in a line, are sealed by the first and second side covers 41 and 42.

One end of the first and second side covers 41 and 42 is hermetically inserted into the other end of each

cylinder

11 and 12, and is coupled by a fastening member 39 such as a long bolt. In this case, as shown in FIG. 4, the fastening member 39 penetrates the

center bodies

21 and 22 from the outside of the

cylinders

11 and 12 to couple the first and second side covers 41 and 42. It supports and fixes the

center bodies

21 and 22 assembled between the first and

second cylinders

11 and 12.

In addition, the first and second side covers 41 and 42 are provided with damper members 43 to 46 for mitigating impact when the

pistons

13 and 14 collide.

As the damper members 43 to 46,

rubber dampers

43 and 44 made of urethane and

magnetic dampers

45 and 46 made of permanent magnets are used, and the

magnetic dampers

45 and 46 are formed of the

pistons

13 and 14. It has the same polarity as the

magnets

15 and 16.

The

magnetic dampers

45 and 46 are inserted into one end of the side covers 41 and 42, and the cover snap rings 47 and 46 are inserted into the side covers 41 and 42 to prevent the

magnetic dampers

45 and 46 from being separated. 48) are assembled.

In addition, the side covers 41 and 42 have an inner space (particularly, a space between the side cover and the piston) of the

cylinders

11 and 12 through the side covers 41 and 42 when the

pistons

13 and 14 are linearly moved. Air filters 49 and 50 for entering and exiting air filtration are installed.

10 electromagnetic electromagnetic compressor 11 first cylinder

12: 2nd cylinder 13: 1st piston

14: 2nd piston 15, 16: magnet

17,18: piston snap ring 19,20: piston o-ring

21: 1st center body 22: 2nd center body

23,25: inlet 24,26: outlet

27 ~ 30: Check valve 31: Center body O-ring

32: electromagnet 33: core

34: conductor 35: center bush

36: core O-ring 37: electromagnet portion O-ring

38: center rod 39: fastening member

41: first side cover 42: second side cover

43,44: Rubber damper 45,46: Magnetic damper

47,48: Cover snap ring 49,50: Air filter

51: DC power supply 52: inverter

53 controller 54 air separator

55: air filter 56: air tank

Claims

A hollow first cylinder 11 and a second cylinder 12 arranged side by side in the axial direction;

A first piston (13) and a second piston (14) having magnets (15, 16) of different polarities and installed in a linearly movable manner in contact with the cylinders (11, 12), respectively;

A first center body (21) and a second center body (22) which are hermetically inserted to face each other between the first and second cylinders (11, 12);

An electromagnet portion 32 inserted coaxially between the first and second center bodies 21 and 22 and forming a magnetic force between the magnets 15 and 16 when electric power is supplied;

The first side cover 41 is hermetically inserted in the outer ends of the first and second cylinders 11 and 12, and coupled to each other to support the cylinders 11 and 21 and the center bodies 21 and 22 therebetween. )

And a second side cover 42;

And a piston reciprocates along the inner wall of the cylinder by the magnetic force between the magnet and the electromagnet portion to produce compressed air.
The method according to claim 1,

The electromagnet part 32 is composed of a cylindrical core 33 made of a ferromagnetic material and a conductive wire 34 wound around the core 33, and an inverter 52 for supplying the conductive wire 34 by converting DC power into AC power. ) Is electrically connected so that the polarity of the core 33 can be changed periodically.
The method according to claim 1,

The first and second pistons (13, 14) is an electromagnetic air compressor, characterized in that configured to be integrally connected by a center rod (38) penetrating the electromagnet portion (32) in the axial direction.
The method according to claim 1,

The first and second center bodies 21 and 22 are formed with inlets 23 and 25 and outlets 24 and 26 for air inlet and outlet of the cylinders 11 and 12, respectively. 25) and the discharge port (24,26) electromagnetic air compressor, characterized in that the check valve (27-30) that is capable of fluid flow in only one direction.
The method according to claim 1,

Electromagnetic air compressor, characterized in that the piston (13,14) is provided with a piston o-ring (19,20) for increasing the airtight performance between the cylinder (11,12).
The method according to claim 1,

Electromagnetic air compressor, characterized in that the side cover (41,42) is provided with a damper member (43 ~ 46) for mitigating the impact impact of the piston (13,14).