KR101061005B1 - Heat resistant dustproof electromagnet - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to electromagnets having heat dissipation and dustproof structures for use in devices such as magnetic levitation systems, magnetic bearings, magnetic guides, etc. that apply magnetic forces derived from electromagnets.

To this end, the present invention includes an electromagnet core disposed to face the stator core and a mover connected to the electromagnet core, and vibration between the mover and the electromagnet core through a damping member such as rubber, paper, or plastic. It is configured to prevent the transition to the moving part side.

In addition, in the electromagnet core of the heat-resistant dust-proof electromagnet according to the present invention, while forming a certain void, the electromagnet coil is wound, one side of the electromagnet coil is configured to be directly connected to the guide member formed on the mover, Forming a heat-resistant dust-proof electromagnet structure that can effectively cope with vibrations acting as an electromagnet core or excessive heat generated in the electromagnet coil.

Therefore, the heat-dissipating dustproof electromagnet according to the present invention has a damping member and employs an independent vibration structure of the electromagnet core, so that disturbance due to high frequency noise generated in the process of controlling current to generate magnetic force acts as a system. The present invention provides an electromagnet having a heat dissipation structure which forms a dustproof structure capable of suppressing vibrations generated by the vibration, and which performs a function of releasing heat generated to suppress the heat generation of the coil by a guide member connected to the electromagnet coil.

Maglev, Magnetic Bearing, Magnetic Guide, Electromagnet, Damping Member, Heat Dissipation, Dustproof, High Frequency Noise, Disturbance

Description

Heat Resistant Dustproof Electromagnet {Electromagnet comprises vibroisolating and radiation structure}

The present invention relates to a heat dissipation dustproof electromagnet, and more particularly, to an electromagnet having a heat dissipation and dustproof structure in an electromagnet used in a device such as a magnetic levitation system, a magnetic bearing, a magnetic guide, etc. that applies a magnetic force derived from the electromagnet. .

Devices such as magnetic levitation systems and magnetic bearings require high magnetic forces depending on the situation, and electromagnets are used to generate such high magnetic forces, and in particular, the magnetic levitation system (MAGnetic LEVitation system, MAGLEV) is suction or repulsion. A device that magnetically floats an object by using the interaction of a magnetic field formed from an electromagnet constituted by an electromagnet, which is coupled to a means for supplying a driving force such as a linear induction motor, can be used to transport the object more efficiently and safely. Provide a floating transport system.

For example, research and development have been attempted to commercialize a magnetic levitation train that transfers trains by applying a magnetic levitation system, and in order to solve friction problems caused by contact in various production processes requiring high precision movement. A transport system using a magnetic Levitation system (MAGLEV) has been developed.

In particular, in the case of an apparatus for conveying wafers in a semiconductor manufacturing process, wafer conveyances employing a magnetic levitation system capable of transferring wafers in a non-contact manner in order to prevent damage caused by fine dust particles due to mechanical contact or lubrication at the lubrication part. The device is being studied.

Since the transport system using the magnetic levitation floats the vehicle body by magnetic force, it can minimize the energy loss due to friction, and can realize a noiseless, low vibration, ultra-clean transport system without mechanical contact or friction. In addition, in the magnetic levitation system, there is no friction, so that the precision can be increased, and the lubricant does not use a lubricant to reduce the friction and has an environmentally friendly characteristic.

In addition, as in the magnetic levitation system, magnetic bearings that support a rotating member or function as a guide, and magnetic guides share these characteristics, and as described above, have high efficiency, high precision, and environmentally friendly characteristics.

However, in such a magnetic bearing, magnetic guide, and magnetic levitating system using the magnetic force of the electromagnet, there is a problem in that a large amount of heat is generated in the coil to introduce a separate cooling system in the process of generating a magnetic force by flowing an electric current through the electromagnet. As the high frequency noise is generated in the process of controlling the flow of current, the shock is propagated, and thus durability is degraded, and precise work has been difficult.

The present invention has been made to solve the above problems, in the present invention, in the heat-resistant dust-proof electromagnet, including a dust-proof structure by a damping member to minimize the influence of disturbance due to high frequency noise, the electromagnet core And it provides an electromagnet including a heat dissipation structure of the guide member for performing a heat dissipation function to suppress the amount of heat generated by the coil.

In order to achieve the above object, the present invention provides an electromagnet core; A mover connected to the electromagnet core; A damping member interposed between the electromagnet core and the mover; A guide member formed on the mover; It includes an electromagnet coil wound while forming a predetermined gap with the electromagnet core, the electromagnet coil provides a heat-resistant dust-proof electromagnet, characterized in that made to be connected to the guide member.

In addition, it is configured to surround it along the circumference of the electromagnet coil, and further comprises a coil support for fixing and supporting the electromagnet coil, the guide member is characterized in that it is made to be directly connected to the coil support and the mover To provide a heat dissipation dust-proof electromagnet.

In this case, the damping member provides a heat-resistant dust-proof electromagnet, characterized in that made of any one selected from rubber, paper, plastic.

In addition, the guide member provides a heat-resistant dust-proof electromagnet, characterized in that the outer surface is formed in a curved form.

In addition, the guide member provides a heat-resistant dust-proof electromagnet, characterized in that made of any one selected from thermally conductive plastic, silicon, epoxy, aluminum alloy.

Here, the mover provides a heat-resistant dust-proof electromagnet, characterized in that the aluminum alloy formed of a honeycomb (honeycomb).

In addition, the electromagnet core provides a heat-resistant dust-proof electromagnet, characterized in that a plurality of plate-shaped magnetic core is laminated.

On the other hand, the present invention provides a heat-resistant dust-proof electromagnet characterized in that it further comprises a closed cooling circuit surrounding the electromagnet core and the electromagnet coil.

In this case, the cooling circuit is configured to be water-cooled according to the flow of cooling water, comprising a cooling water pipe formed in the outer periphery of the electromagnet core and the electromagnet coil and the guide member, and a heat exchanger formed outside the mover. To provide a heat dissipation dust-proof electromagnet.

Here, the damping member provides a heat-resistant dust-proof electromagnet, characterized in that made of a thermoelectric plastic or epoxy.

In addition, the electromagnet core and the mover are fastened by fastening bolts, respectively, wherein the damping member interposed therebetween is configured not to be fastened with the fastening bolts as it passes through the fastening bolts. Provide heat dissipation dustproof electromagnet.

As described above, the heat-dissipating dustproof electromagnet according to the present invention has the following effects.

First, a damping member is interposed between the mover and the electromagnet core, and the coil is fixed to the guide of the mover, thereby reducing the disturbance vibration caused by the high frequency noise.

Second, by connecting a guide member which is an electrical insulator, a nonmagnetic material, and having excellent thermal conductivity and mechanical strength, the system forms a heat dissipation structure capable of dissipating heat generated when current is applied to the coil to the outside. There is an effect that can control more precisely by reducing the heat remaining in the inside.

Third, the heat dissipation dust-proof electromagnet according to the present invention can obtain excellent heat dissipation and dust-proof effect without adding a separate cooling device or a configuration for blocking vibration, there is an effect that can be miniaturized the whole system using an electromagnet.

Fourth, if a separate cooling device is configured in the magnetic levitation or magnetic guide system consisting of a heat-dissipating dust-proof electromagnet according to the present invention, it is possible to obtain an excellent dustproof effect, and at the same time an electromagnet capable of producing a large force per unit volume. This has the effect of miniaturizing the system.

In the present invention for achieving the above object is provided with a damping member between the electromagnet core and the mover, the guide member of the mover electrically connected to the coil on the outer periphery of the pair of coils wound so as not to interlock with the electromagnet core It provides an electromagnet that can perform dust and heat dissipation.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. A singular expression includes a plural expression unless the context clearly indicates otherwise. In this application, the terms “comprises” or “having” are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described in the specification, and one or more other It is to be understood that the present invention does not exclude the possibility of the presence or the addition of features, numbers, steps, operations, components, parts, or a combination thereof.

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

The heat radiation dustproof electromagnet according to the present invention includes an electromagnet core disposed oppositely to form a magnetic flux with the stator core and an electromagnet coil wound about the electromagnet core, and in FIG. The cross section of the heat-dissipating dustproof all-magnet structure for utilizing the magnetic levitation force generated in the gap between the electromagnet cores is shown in detail.

'형으로 형성된 전자석 코어(20)의 좌우 양측에 코일을 감아 형성한 전자석 코일(60)을 포함하는 구조를 사용할 수 있으며, 이 경우, 실제 이송 시스템의 이송부에 연결된 이동자(40)가 상기 전자석 코어(20)의 상측 또는 하측에 직접적으로 연결되도록 구성된다. 첨부된 도 1의 전자석 구조의 경우, 레일 역할을 수행하는 고정부가 상측에 배치된 오버 행잉 자기 부상 시스템에 적용될 수 있는 구조로서, 이동자(40)가 전자석 코어(20)의 하측에 배치된 형태이다. 한편, 본 발명에서 지칭하는 '이동자'는 그 명칭에 국한되지 않고, 고정자에 대응하는 모든 구성을 의미하는 것으로 해석된다.Heat dissipation type electromagnet according to the present invention, as shown in Figure 1, preferably '

It can be used a structure including an electromagnet coil 60 formed by winding the coils on both the left and right sides of the electromagnet core 20 formed in a 'shape, in which case the mover 40 connected to the conveying part of the actual conveying system is the electromagnet core. It is configured to be directly connected to the upper side or the lower side of the (20). In the attached electromagnet structure of FIG. 1, a structure that can be applied to an overhanging magnetic levitation system in which a fixing part serving as a rail is disposed on the upper side thereof is configured such that the mover 40 is disposed below the electromagnet core 20. . On the other hand, the term "mover" referred to in the present invention is not limited to the name, it is interpreted to mean all configurations corresponding to the stator.

Looking at the specific configuration of the heat-dissipating dustproof electromagnet according to the present invention, as shown in Figure 1, the electromagnet core 20 disposed to face the stator core 10 and the mover 40 connected to the electromagnet core 20 It includes, the mover 40 is configured to be directly connected to the electromagnet core 20 in order to share the effects of the magnetic levitation force with the transport.

Typically, high frequency noise is generated in the process of controlling the current in a manner such as pulse width modulation to generate a magnetic force in the electromagnet, and the high frequency noise acts as a disturbance of the system, so that unexpected force is applied to the electromagnet core 20. And the mover 40 connected thereto.

Accordingly, in the present invention, in order to remove the influence of the high frequency noise, the vibration due to disturbance is prevented from being transferred to the moving part side through the damping member 30 between the mover 40 and the electromagnet core 20. Configure.

In addition, in the electromagnet core 20 of the heat-resistant dust-proof electromagnet according to the present invention, the electromagnet coil 60 is wound while forming a constant void d, and a part of the electromagnet coil 60 is the mover ( Is configured to be directly connected to the guide member 50 formed in the 40, the heat-resistant dust-proof electromagnet structure that can effectively cope with the vibration acting as the electromagnet core 20 or the heat generated excessively in the electromagnet coil 60 Form.

The electromagnet coil may be configured such that the circumference of the electromagnet coil is wrapped by a coil support for fixing and supporting the electromagnet coil, and the heat dissipation dust-proof electromagnet including the coil support is directly connected to the coil support. It can be configured to.

In this case, as a structure for further reducing heat generated from the electromagnet core, the electromagnet core is configured such that a plurality of plate-shaped magnetic cores having a thickness of several hundred micrometers are stacked, so that eddy current loss generated in the electromagnet core is reduced. Can be configured to reduce. In addition, the mover is preferably made of a light and durable material, and particularly preferably an aluminum alloy having a honeycomb.

In this case, the damping member 30 may be made of rubber (including an elastomer, for example, RUBLOC ^® ) or a dustproof material such as plastic or paper so that the electromagnet of the present invention can effectively perform a heat dissipation and a dustproof function. It is manufactured to be configured to prevent the shock caused by the disturbance is transmitted to the mover 40 side.

In addition, the guide member 50 formed on the mover 40 is preferably made of a material having excellent thermal conductivity so that the heat generated from the electromagnet coil 60 is effectively conducted to be discharged to the outside, the electromagnet coil 60 It is preferable to use a material with low electrical conductivity so as not to interfere with the formation of a magnetic field in accordance with the flow of current between the and the core 20.

In order to satisfy such electrical and thermal characteristics, a thermally conductive plastic, which is a thermal conductor and an electrical insulator, may be used as the material of the guide member. The thermally conductive plastics are not magnetic, are electrical insulators, are materials having thermal conductivity efficiencies comparable to those of metals, and are light in weight and have excellent design flexibility.

In addition, the guide member of the present invention may be made of a silicon-based material or an epoxy or the like which is an electrical non-conductor and has excellent thermal conductivity. In some cases, an aluminum alloy-based material may be used. The aluminum alloy-based materials may generate heat due to the eddy current caused by the magnetic field generated by the coil due to the high conductivity of the conductor, but may be negligible at a long distance, and thus may be used as a material for the guide member. Can be considered

Although not shown, in the heat-resistant dust-proof electromagnet according to the present invention, the damping member may be made of a material such as thermally conductive plastic or epoxy, and thus may be configured to allow thermal movement between the electromagnet core and the mover without passing through the guide member. In the case where both the guide member and the damping member are made of a thermally conductive plastic, the heat dissipation can be more effectively performed.

Similarly, the connecting member 51 for connecting the guide member 50 and the electromagnet coil 60 is also preferably configured to use a material having excellent thermal conductivity but low electrical conductivity.

'형의 전자석 코어(20)를 사용하는 경우에는 그 양쪽에 감겨지는 전자석 코일(60) 각각을 연결 부재(51)로 상기 가이드 부재(50)에 연결시키는 한편, 중앙에 두 개의 전자석 코일(60)이 인접하는 위치에서도, 또 다른 연결 부재(52)에 의하여 이를 결속시켜 서로 연동될 수 있도록 구성함이 바람직하다.As shown in FIG. 1,

In the case of using the electromagnet core 20 of the '' type, each of the electromagnet coils 60 wound on both sides thereof is connected to the guide member 50 by the connecting member 51, while the two electromagnet coils 60 are formed at the center. ) Is preferably configured to be linked to each other by binding it by another connecting member 52 in the adjacent position.

Therefore, the heat-resistant dust-proof electromagnet according to the present invention is impacted by the high frequency noise generated from the electromagnet core 20 by the damping member 30 interposed between the electromagnet core 20 and the mover 40. It can be prevented from being transferred to the mover 40 side, the high heat generated from the electromagnet coil 60 by the guide member 50 functioning as a heat sink is made of a structure that can be released to the outside because the self-cooling The heat dissipation structure is formed as much as possible. In this case, although not shown, the outer wall of the guide member 50 may be configured as a curved outer wall having a large surface area to form a wider contact surface to perform a more effective heat dissipation function.

In the present invention, the damping member 30 interposed between the electromagnet core 20 and the mover 40 prevents vibration caused by disturbance from the electromagnet core 20 directly to the mover 40. In addition, the electromagnet core 20 and the electromagnet coil 60 are wound in a structure spaced apart by a predetermined interval, so that the vibration from the electromagnet core 20 through the electromagnet coil 60 and the guide member 50. Do not transfer. Therefore, unlike the conventional coil, the electromagnet coil 60 included in the heat radiation dustproof electromagnet according to the present invention is not directly fixed to the electromagnet core 20 and spaced apart from the electromagnet core 20 at a predetermined distance. And as it is wound, it is configured to form a constant void d. Therefore, the electromagnet core 20 and the electromagnet coil 60 are separated within the range of the gap d formed at regular intervals, so that the electromagnet core 20 and the electromagnet coil 60 are interlocked. It can be configured to move independently.

2 shows a state in which the vibration caused by disturbance does not transfer from the electromagnet core 20 to the mover 40 by the heat dissipation dustproof electromagnet of the present invention.

If a disturbance such as high frequency noise occurs and an unexpected force acts on the electromagnet core 20, as shown in FIG. 2, a gap at regular intervals with respect to both ends of the electromagnet core 20 is shown. As the electromagnet coil 60 is wound while forming (d), since the electromagnet core 20 vibrates independently without direct contact with the electromagnet coil 60, the vibration generated in the electromagnet core 20 This does not reach the mover 40.

In the heat-resistant dust-proof electromagnet according to the present invention includes a guide member directly fixed to the mover and the electromagnet coil, through the guide member, the heat generated during the operation of the system is easily moved, but the mover If the structure does not sufficiently dissipate, it may be configured to include a separate cooling system for the electromagnet coil and the guide member to improve the heat dissipation performance of the guide member.

Although not shown, the heat radiation dustproof electromagnet implemented according to another embodiment of the present invention provides a heat radiation dustproof electromagnet including a cooling system in the coil support and the guide member to improve heat radiation performance.

In the heat-dissipating dustproof electromagnet according to this embodiment, it may be configured as a structure including a coil support configured to surround and support the electromagnet coil, and a guide member fixed directly to the coil support and the mover. In this case, the guide member may have heat transfer. It is preferable to have a structure that forms a sufficiently large contact area to facilitate, but the cross-sectional area of the guide member can be appropriately adjusted in consideration of the relationship with vibration.

In addition, a separate cooling system for assisting the heat dissipation performance may be configured as a general water-cooled system, and is connected to the closed loop cooling pipe and the cooling pipe formed by being disposed in the coil support and the guide member to exchange heat with the outside. This is done by including a heat exchanger configured to be possible.

Preferably, the cooling pipe is configured to surround the electromagnet core and the electromagnet coil so as to evenly cool a large area, and the cooling pipe is an area sufficient to further improve the heat dissipation performance of the guide member. Configure to be excreted in the guide member. At this time, in order to circulate the cooling water of the cooling system, a non-contact source device (CPS) or a battery power source may be used.

On the other hand, in the heat-resistant dust-proof electromagnet according to the present invention, with respect to the fastening structure between the electromagnet core and the damping member and the mover, each can be connected in a conventional manner, as shown in Figure 3, the electromagnet core Through a fastening structure for fastening the bolts and the mover by a bolt, it is possible to form a more excellent dustproof structure.

Figure 3 illustrates a preferred fastening structure of the heat-dissipating dustproof electromagnet according to the present invention, as shown in Figure 3, the electromagnet core, the damping member, the fastener between the fasteners using a fastening bolt, the electromagnet The core and the mover are configured to be directly fastened to the fastening bolt, and in the case of the damping member, a diameter of an insertion hole into which the fastening bolt is inserted is sufficiently large so that the damping member is directly connected by the fastening bolt. It is configured not to be fastened to, so that the damping force can be adjusted by adjusting the torque for the fastening bolt is fastened.

Thus, the damping member functions as a washer of a fastening structure using bolts, and the surface contact between the electromagnet core and the damping member and between the damping member and the mover and the point contact made between the electromagnet core and the mover. Accordingly, the vibration generated in the electromagnet core is not easily transmitted to the mover, and thus corresponds to a structure capable of reducing vibration due to the excitation force caused by the electromagnet coil current.

Therefore, as shown in FIG. 3, it is not directly fastened with the damping member, and as a fastening bolt for fastening the mover and the electromagnet core to an appropriate position, it is possible to secure more excellent dustproof performance.

Heat dissipation dustproof electromagnet according to the present invention having such a configuration can be converted to a magnetic bearing system, as well as a magnetic bearing and magnetic guide employing the same structure in order to achieve the same purpose and effect in the configuration having the same technical idea. Yes will be apparent in the light of the skill level of those skilled in the art.

Therefore, while the present invention has been described with reference to preferred embodiments, those skilled in the art will appreciate that modifications and variations of the elements of the present invention are possible without departing from the scope of the present invention. In addition, many modifications may be made to particular circumstances or materials without departing from the essential scope of the invention. Accordingly, the invention is not limited to the details of the preferred embodiments of the invention, but will include all embodiments within the scope of the appended claims.

1 is a cross-sectional view of a heat dissipation dust-proof electromagnet according to the present invention.

Figure 2 is an operating state of the disturbance in the cross-sectional view of the heat radiation dust-proof electromagnet according to the present invention.

3 is a fastening structure of the heat dissipation dust-proof electromagnet according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: stator core 20: electromagnet core

30: damping member 40: mover

50: guide member 60: electromagnet coil

Claims (11)

An electromagnet core; A mover connected to the electromagnet core; A damping member interposed between the electromagnet core and the mover; A guide member formed on the mover; An electromagnet coil wound while forming a constant void with the electromagnet core; Includes, wherein the electromagnet coil is heat radiation dustproof electromagnet, characterized in that made to be connected to the guide member. According to claim 1, It is configured to surround it along the circumference of the electromagnet coil, and further comprises a coil support for fixing and supporting the electromagnet coil, the guide member is made to be directly connected to the coil support and the mover Heat-resistant dust-proof electromagnet, characterized in that. The method of claim 1 or claim 2, wherein the damping member is heat-resistant dust-proof electromagnet, characterized in that made of any one selected from rubber, paper, plastic. The heat dissipation dust-proof electromagnet according to claim 1 or 2, wherein the guide member has a curved outer surface. The heat dissipation type electromagnet according to claim 1 or 2, wherein the guide member is made of any one selected from a thermally conductive plastic, silicon, epoxy, and an aluminum alloy. The heat dissipation type electromagnet according to claim 1 or 2, wherein the mover is an aluminum alloy formed of a honeycomb. The electrostatic electromagnet of claim 1 or 2, wherein the electromagnet core is formed by stacking a plurality of plate-shaped magnetic cores. 3. The heat resistant dustproof electromagnet according to claim 1 or 2, further comprising a closed cooling circuit surrounding the electromagnet core and the electromagnet coil. The cooling circuit of claim 8, wherein the cooling circuit is configured to be water-cooled according to a flow of cooling water, and includes a cooling water pipe formed in an outer circumference of the electromagnet core and the electromagnet coil and inside the guide member, and a heat exchanger formed outside the mover. Heat-resistant dust-proof electromagnet characterized by the above-mentioned. The heat dissipation type electromagnet according to claim 1 or 2, wherein the damping member is made of a thermoelectric plastic or epoxy. The method according to claim 1 or 2, wherein the electromagnet core and the mover are each fastened by a fastening bolt, the damping member interposed therebetween so as not to be fastened with the fastening bolt as passing through the fastening bolt. Heat dissipation dust-proof electromagnet, characterized in that configured.

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