JP2008135489A - Electromagnetic coil with thin-type cooling unit comprised of thin rectangular pipes - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electromagnetic coil provided with a thin-type cooling unit that can suppress the rise of temperature of the electromagnetic coil by tightly fixing the electromagnetic coil within a housing space of the thin-type cooling unit, and enhance magnetic flux density so as to improve performance and reliability of an electric/electronics apparatus to great extent. <P>SOLUTION: A fused wire is tightly wound in a space of a thin-type cooling unit in air core or alpha winding manner, and a clearance between the windings is eliminated as much as possible by heating and compressing if needed, so as to improve thermal conductivity. Thus, the electromagnetic coil is tightly fixed to the housing space of the thin-type cooling unit, utilizing the thermal conduction efficiency to utmost extent. The thin-type cooling unit is tightly fixed to the lamination surface of lamination high-density air core winding or lamination high-density alpha winding electromagnetic coil. The thin-type cooling unit uses a cooling unit comprised of thin-type rectangular pipes with a short side of 0.2 to 1.0 mm so that the basic performance of the electromagnetic coil may be maintained. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is characterized in that the electromagnetic coil can be tightly fixed in the storage space of the thin cooling unit in order to remarkably improve the performance and reliability of the air core winding or the alpha winding electromagnetic coil using the fusion conducting wire. The present invention relates to an electromagnetic coil having a thin cooling unit.

  In order to remarkably improve the performance and reliability of the electromagnetic coil, it is necessary to efficiently dissipate the Joule heat generated in the electromagnetic coil to the outside and reduce the temperature rise. As a method, the conductor diameter is increased in order to suppress heat generation. Alternatively, the electromagnetic coil is cooled with a cooling plate having a copper pipe. Or cool by forced air cooling. The method of improving the performance and reliability by a method such as manufacturing an electromagnetic coil with a copper pipe and directly cooling it is general, but the conventional method has problems such as shape, cooling efficiency, cost, etc. There is a drawback that it can be used only under limited conditions due to restrictions.

Further, when the diameter of the conductive wire used for the electromagnetic coil is increased, there is a problem that the size of the electromagnetic coil increases and cannot be stored in the device. Further, when the electromagnetic coil is cooled by a cooling plate having a copper pipe, the entire size including the electromagnetic coil becomes large, and problems such as being unable to be accommodated in the equipment as described above have been revealed.

Furthermore, even in forced air cooling of the electromagnetic coil, there are problems such as space and cost, and there is a method of using a copper pipe for the electromagnetic coil as a method of directly cooling the electromagnetic coil, but there is a disadvantage that the electromagnetic coil cannot be reduced in size and is not practical. there were.

The problem to be solved is to manufacture an electromagnetic coil that can be effectively cooled in a limited space of a thin cooling unit.

In order to solve the above-mentioned problems, the present invention uses an air core or an alpha winding for the fusion lead wire so as to be in close contact with the space of the thin cooling unit, and heat-compresses as necessary to reduce the gap between the windings as much as possible. The purpose is to improve heat conduction and to make the best use of heat conduction efficiency by tightly fixing in the storage space of the thin cooling unit.

In addition, a high-performance, high-reliability electromagnetic coil can efficiently cool the heat generated by the electromagnetic coil by tightly fixing a thin cooling unit to the laminated surface of the laminated high-density air core winding or laminated high-density alpha winding electromagnetic coil. Is to provide.

  The configuration of the thin cooling unit used in the present invention uses a cooling unit composed of a thin rectangular pipe having a rectangular short side of 0.2 mm to 1.0 mm so as not to impair the basic performance of the electromagnetic coil. .

  The electromagnetic coil characterized by having the thin cooling unit of the present invention can control the temperature rise lower by cooling the thin cooling unit than the electromagnetic coil alone, and has a magnetomotive force several times that of the equivalent electromagnetic coil. Not only can it be obtained, but the temperature can be kept low, so that the deterioration of the insulating layer can be suppressed, and the life can be remarkably improved as compared with the electromagnetic coil without cooling. Accordingly, it is an object of the present invention to provide a high-performance and high-reliability electromagnetic coil as compared with a conventional electromagnetic coil. Since the magnetomotive force can be increased several times by cooling, it can be miniaturized as a coil for a motor or the like that requires a large torque, and it can be miniaturized if it has the same magnetomotive force.

  Cooling effect is achieved by improving heat conduction by making the gap between coil windings as small as possible by tightly fixing or thermoforming the air core or alpha-wound electromagnetic coil in the storage space of the thin cooling unit using a fused conductor. It was possible to greatly improve the current flowing through the electromagnetic coil. As a result, the magnetomotive force can be greatly increased, and a motor and solenoid with greatly improved torque can be realized.

  FIG. 1 is a three-dimensional view of an electromagnetic coil with a thin cooling unit according to the present invention, where 1 is an electromagnetic coil, 2 is a lead wire, 3 is a fusion lead, 4 is a thin cooling unit, and 5 is a cooling medium inlet. , 6 indicate cooling medium outlets. FIG. 2 is a three-dimensional view of the present invention before assembly shown in FIG. 1, in which 7 is a lead wire, 8 is a fusion lead, 9 is a thin cooling unit, 10 is a cooling medium inlet, and 11 is a cooling medium. Indicates the outlet.

FIG. 3 is a three-dimensional view with a laminated thin cooling unit of the present invention, wherein 12 is a thin cooling unit for lamination, 13 is a cooling medium inlet, 14 is a cooling medium outlet, 15 is a laminated coil, A lead lead 17 represents a fusion lead. 4 is a three-dimensional view before assembly of FIG. 3, wherein 18 is a thin cooling unit for stacking, 19 is a stacked coil, 20 is a cooling medium inlet, 21 is a cooling medium outlet, and 22 is a lead lead wire. , 23 is a connecting lead wire, and 24 is a fused lead wire.

FIG. 5 is a three-dimensional view of an electromagnetic coil provided with a conventional cooling unit, in which 25 is a cooling unit, 26 is an electromagnetic coil, 27 is a cooling medium inlet, 28 is a cooling medium outlet, and 29 is a cooling pipe. Indicates.

  A thin cooling unit is manufactured with a rectangular pipe with a rectangular short side of 0.2 mm to 1.0 mm in accordance with the dimensions of the air core winding or alpha winding of the fused lead, and the air core winding or alpha winding electromagnetic coil is used as the storage part. In close contact. Heat molding is performed for the purpose of reducing the gap between the electromagnetic coils as much as possible to improve heat conduction. The electromagnetic coil is tightly fixed to the storage portion of the thin cooling unit. By closely fixing, the heat generated in the electromagnetic coil is efficiently transmitted to the thin cooling unit and can be radiated efficiently.

In addition, by fixing the thin cooling unit to the laminated surface of the laminated high-precision coil, the cooling surface of the cooling unit can be effectively used, and an electromagnetic coil having a thin cooling unit with an increased cooling effect can be provided.

The electromagnetic coil provided with the thin cooling unit of the present invention has a contact surface with extremely low thermal resistance, greatly improving heat dissipation and greatly improving heat dissipation. A large magnetomotive force was obtained by the increase, and a high torque motor was obtained.

  The electromagnetic coil provided with the thin cooling unit of the present invention provides an electromagnetic coil that can flow a large amount of current with a small temperature rise. A large magnetic force can be obtained by increasing the current. In the case of the same current, the temperature rise can be kept low, the coil temperature is low, the deterioration of the insulating layer is extremely small, and the reliability can be improved. Suitable for electromagnetic coils such as linear motors and solenoids that generate large torque.

The solid view of the electromagnetic coil with a thin cooling unit of this invention. FIG. 3 is a three-dimensional view of the present invention before assembly in FIG. 1. The three-dimensional figure with the lamination | stacking thin cooling unit of this invention. FIG. 4 is a three-dimensional view before assembly of FIG. 3 of the present invention. The three-dimensional view of the electromagnetic coil provided with the conventional cooling unit.

Explanation of symbols

1, 2, 26 Electromagnetic coil 2, 7, 16, 22 Lead wire 3, 8, 17 Fusion conducting wire 4, 9, 24 Thin cooling unit 5, 10, 13, 20, 27 Cooling medium inlet 6, 11 , 14, 21, 28 Cooling medium outlets 12, 18 Laminate thin cooling unit 15, 19 Laminated coil 23 Connection lead wire 25 Cooling unit 29 Cooling pipe

Claims (4)

Air core winding or alpha winding was performed using a flat wire or a round wire (hereinafter referred to as a fusion lead wire) having a conductive wire, an insulating coating covering the conductive wire, and a fusion coating further covering the insulating coating. An electromagnetic coil comprising an electromagnetic coil and a thin cooling unit composed of a thin rectangular pipe. An electromagnetic coil comprising an air core winding or alpha winding using a fusion-bonded lead wire, and a thin cooling unit comprising a thin rectangular pipe on a laminated surface. An electromagnetic coil comprising a thin cooling unit composed of a thin rectangular pipe on a high-density air-core electromagnetic coil or high-density alpha-wound electromagnetic coil using a fused conductor. An electromagnetic coil comprising a thin cooling unit composed of a thin rectangular pipe on a laminated surface of a laminated high-density air-core wound electromagnetic coil or laminated high-density alpha-wound electromagnetic coil using a fusion lead.

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