KR20160022093A

KR20160022093A - Water cooling type cable for high frequency

Info

Publication number: KR20160022093A
Application number: KR1020140107749A
Authority: KR
Inventors: 허성종
Original assignee: 허성종
Priority date: 2014-08-19
Filing date: 2014-08-19
Publication date: 2016-02-29

Abstract

The present invention relates to a water-cooling cable for high frequency, which includes: a pair of cable main body which are embedded with a bare copper applying a high frequency current and have cooling water flowing in an inside; and a connection end which is comprised at both ends of the cable main body, and is connected to a high frequency device or a cooling water supply pipe. The connection end includes: a cylindrical conductive connection pipe grounded with the bare copper; a conductive finishing ring which has a ground part connected to the connection pipe and is compressed to be fixed to an outer circumference of an end part of the cable main body; a shrinkable tube which is coated to prevent the finishing ring from being exposed; and a connection nut which is inserted into a front end of the connection pipe, and fixes the connection pipe by connecting the connection pipe to the high frequency device or the cooling water supply pipe. According to the present invention, the water-cooling cable can obtain the effect of increasing safety and achieving long lifespan, because heat concentration at the connection end of the water-cooling cable supplying the high frequency current to the high frequency device does not occur.

Description

WATER COOLING TYPE CABLE FOR HIGH FREQUENCY

The present invention relates to a high-frequency water-cooled cable, and more particularly, to a high-frequency water-cooled cable which is used for stably sealing a brazed copper tube. In a high frequency device including a high- To an improved high-frequency water-cooled cable.

Generally, when bonding metals, most of them are formed by welding or soldering.

Among them, brazing is often used for bonding light metal such as copper (Cu), and brazing is mainly used among soldering.

That is, brazing is a kind of soldering, which means a non-ferrous metal having a melting point lower than that of the base material to be bonded, or an alloy thereof (brazing material) as a filler, and melting only the brazing material without melting the base material.

Such brazing has been used particularly for bonding refrigerant pipes such as refrigerators and air conditioners.

However, there is a disadvantage that the brazing joint portion does not have homogeneity and cracks, grooves, etc. are generated. This is because it is not a bonding surface formed by a stable heat treatment, and therefore it is difficult to have a bonding strength of a certain level or higher in terms of bonding strength.

For this reason, in a refrigerator or an air conditioner assembly line, a brazed joint is subjected to a heat treatment by applying a torch heat to improve the bonding strength at the joint surface.

However, when the torch is used, the quality of the treatment varies according to the skilled worker, and the quality deviation is large. When the torch is used, the synthetic resin around the part to be heated is melted to cause the product failure. It is not only difficult and difficult to work but also there is a high risk of safety accidents.

In order to solve this problem, a technique capable of heat treatment using a high-frequency induction heating method has been disclosed. For example, Japanese Patent Application Laid-Open No. 2012-0010429 can be cited.

Referring to the drawings, a high frequency induction heating system that converts an eddy current loss and a hysteresis loss into joule heat using a high frequency induction heating type jig, This is a useful technique.

However, since the high frequency induction heating technique, including the disclosed patent technology, is a type in which the unit (high frequency induction heating jig) is fixed to the housing, the mobility and portability are very limited.

In addition, as can be seen from the disclosure in the open patent application, it is practically impossible to heat-process members already assembled in an assembly line, only when the member and the member are in the form of a single piece, so that it can be used in a refrigerator or an air- There was no number.

This is because the assembled members can not be inserted into the jig disclosed in the above patent, so that it is virtually impossible to work, and since most of the units are installed in a fixed housing, the unit itself can be moved There is also no reason not to.

In order to improve this, Applicant has developed a high frequency gun in the form of a gun which is easy to use and convenient, and has been patented as a registered patent No. 1312817.

As well as the registered patent of the applicant of the present invention, a water-cooled cable capable of flowing cooling water is used because cooling is required in a high-frequency device (high-frequency induction heating) using other high-frequency waves.

The water-cooled cable is designed to allow the cooling water to flow inside and cool the heat generated when a high frequency current is applied to cool the water for a long time.

However, in the conventional water-cooled cable, a metallic member such as an annular ribbon or the like, particularly a copper ring or the like, is inserted and pressed to fix the connection end with the high frequency device. The heat generation is concentrated due to the potential difference between the conductive lines (or the conductive tubes) provided inside, and the coating of the water-cooled cable is expanded and deformed due to the concentration of heat, thereby causing a gap to occur and causing leakage of cooling water.

Therefore, until now, there is no way to solve such a phenomenon, and in the field, the string of the fishing line is tightly wrapped around the connection end, or the quality of the appearance is deteriorated in that state, so that the fishing line wrapped around the tube is not seen I am using the method.

However, this method is merely a temporary measure, and it has not been possible to solve the leakage due to the occurrence of the gap due to the heat generation, and it remains a problem that can not be solved until now, and the life of the water- Therefore, it is urgent to come up with a solution to this problem.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and solve the problems of the prior art as described above and to solve the problem of the prior art by eliminating the potential difference between the finishing ring and the connecting conduit connected to the cable, The present invention has been made to solve the above problems and to provide a high-frequency water-cooling cable capable of achieving improved stability and longevity by preventing the cooling water from leaking by suppressing the occurrence of cracks in the hose.

In order to achieve the above-mentioned object, the present invention provides a pair of cable main bodies, in which a bare copper for applying a high-frequency current is embedded and cooling water flows into the inside of the cable main body; And a connection terminal provided at both ends of the cable main body and connected to a high-frequency device or a cooling water supply pipe, wherein the connection terminal has a cylindrical conductive connection conduit grounded with the breeze wire and a grounding portion connected to the connection conduit, A conductive finishing ring press-fixed to an outer circumferential surface of the end portion of the main body, a shrinking tube covering the finishing ring so as not to be exposed, and a connection nut fitted to the distal end of the connection conduit to connect and fix the connection conduit with the high frequency device or the cooling water supply pipe The present invention provides a high-frequency water-cooled cable.

At this time, a plurality of knurling grooves are further formed on the outer circumferential surface of the connection conduit at intervals in the longitudinal direction.

According to the present invention, since the heat concentration is not generated at the connection end of the water-cooled cable for supplying the high-frequency current to the high-frequency device, the safety is increased and the longevity can be achieved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exemplary view of a high-frequency water-cooling cable according to the present invention. FIG.
2 is an exemplary partial cross-sectional view of a high-frequency water-cooling cable according to the present invention.

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

Before describing the present invention, the following specific structural or functional descriptions are merely illustrative for the purpose of describing an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention may be embodied in various forms, And should not be construed as limited to the embodiments described herein.

In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein. However, it should be understood that the embodiments according to the concept of the present invention are not intended to limit the present invention to specific modes of operation, but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

As is well known, the high-frequency device to which the present invention is applied is based on the electromagnetic induction principle discovered by Faraday in 1831. When the amount of magnetic flux lines passing through the conductor that conducts electricity is changed, electromotive force is generated in the conductor It is applied.

Particularly, when a coil for flowing an alternating current, that is, a heating coil is placed in the vicinity of a conductor to be heated, and a magnetic flux line that changes is made, the magnetic flux line passes through the conductor and generates an electromotive force in the conductor to induce a current. The power consumed in the heat exchanges with the heat energy so that the inside of the conductor is heated and melted. At this time, the generated heat is called Joule heat.

In high-frequency devices using such an electromagnetic induction heating principle, high-frequency currents must be flowed to generate a high temperature. Therefore, cooling is indispensable. Cooling is mainly a water-cooling type, that is, a structure in which cooling water is circulated. A water-cooled cable as in the present invention is used.

The high-frequency water-cooling cable according to the present invention includes a cable main body 100, as shown in Figs.

The cable main body 100 is a flexible hose covered with a bare copper 110, which is a conductive line capable of applying a high-frequency current.

At this time, as shown in the drawing, the cable main body 100 has a pair of the first cable 100a and the second cable 100b, which is easy to understand in terms of + and -.

That is, if + is applied to the first cable 100a and the cooling water is drawn in, the second cable 100b is applied with - and the cooling water is discharged.

In this case, the cooling water flows to the outside of the paddle 110 built in the first cable 100a, flows into the outside of the paddle 110 built in the second cable 100b after circulating inside the high frequency device (not shown) The coil part of the high frequency device is cooled while repeating the circulation of the exhaust gas.

The connecting end 200 is provided at both ends of the cable main body 100. The connecting end 200 has a fastening means necessary for connection with a high frequency device and connection with a cooling water supply pipe .

As shown in the drawing, the connecting means includes a connecting conduit 210 to which the paddle 110 is fixed, a closing ring 220 grounded to the connecting conduit 210 and crimped and fixed around the end of the cable body 100, A shrink tube 230 covering the finishing ring 220 so as not to expose the connection ring 210 and a connection nut 240 fitted to the distal end of the connection conduit 210 to connect and fix the connection conduit 210 with the high frequency device.

In this case, the connection conduit 210 is formed in a cylindrical shape and is configured to be fitted in the hollow of the cable body 100, and a paddle 110 is disposed in an inner space of the connection conduit 210, The end of the paddle 110 is grounded and fixed to one side of the inner circumferential surface of the connection conduit 210.

Therefore, the high-frequency current supplied through the gangway 110 flows through the connection conduit 210.

In particular, a plurality of nulling grooves 214 are formed on the outer circumferential surface of the connection conduit 210 at intervals in the longitudinal direction.

The knurling portion 214 increases the contact force with the inner circumferential surface of the cable body 100 as an adherend. For example, the knurling portion 214 has a wedge-shaped connection structure to increase the frictional force while widening the contact area. So that it can be fixed.

In addition, the distal end of the connection conduit 210 constitutes the enlarged diameter portion 212 in a state of being enlarged by a certain radius by using the expansion joint for connection with the high frequency device.

In this case, the enlarged diameter portion 212 can be machined at the time of on-site assembly because the connecting conduit 210 itself is a copper pipe, and the connecting nut 240 must be inserted before forming the enlarged diameter portion 212 .

This is because the distal end diameter of the connecting conduit 210 becomes large at the moment when the enlarged diameter portion 212 is formed, and the connecting nut 240 can not be inserted later.

In addition, the circumferential surface of the enlarged diameter portion 212 is formed to be tapered as shown in the drawing, and the inner circumferential surface of the connecting nut 240 should be machined to have a corresponding tapered shape.

The end of the cable conduit 210 protrudes from the end of the cable main body 100, that is, the connection end of the cable conduit 210 is fitted with a finishing ring 220 as shown in FIG.

In the present invention, the grounding part 222 is further formed at one end of the closing ring 220 so as to have a smaller diameter, and the grounding part 222 is formed on the outer circumferential surface of the connecting conduit 210 And grounded.

Accordingly, the connection conduit 210 is substantially extended to the outer circumferential surface of the connection end of the cable body 100.

The reason for doing this is to keep the end ring 220 connected to the connection conduit 210 so that the potentials do not become equal due to the equilibrium between them.

Therefore, since the potential difference is not generated, heat concentration does not occur during the passage of the high frequency current, so that the cable body 100 is not expanded or lifted at the corresponding portion, that is, the connection end, so that leakage of the cooling water can be fundamentally cut off.

The closing ring 220 is hermetically closed by covering the shrink tube 230.

Therefore, it is unnecessary to wind up fishing lines and the like complicatedly and complicatedly as before, which is a very stable and effective leakage prevention measure.

With such a structure, the water-cooled cable connection can be easily completed only by fastening the connection nut 240 to the connection terminal of the high-frequency device.

In addition, with respect to the potential difference, if the conductive wire is not a water-cooled cable, there is no problem even if the finish ring exists. Simply close the tube by inserting it into the tube so that the finish ring can not be seen.

However, in the case of the water-cooled cable, since the cooling water is passing through the cable, a serious situation occurs when the cable body is inflated by the heat, resulting in a problem of leakage.

Therefore, when the potential difference is eliminated as in the present invention, the heat concentration at the connection end is eliminated, so that the reason for the cable main body to inflate eventually becomes no longer. This makes it possible to prevent leakage of the cooling water from the source, It is now possible to solve serious problems that arise.

100: Cable main body 200: Connection terminal

Claims

A pair of cable bodies in which a bare copper for applying a high-frequency current is built in and cooling water flows inside;
And a connection end provided at each end of the cable main body and connected to the high frequency device or the cooling water supply pipe,
Wherein the connection end includes a conductive conductive connection pipe having a cylindrical conductive connection terminal to which the twisted wire is grounded, a conductive finishing ring having a grounding portion connected to the connection conduit and fixed to the outer circumferential surface of the end portion of the cable body, a shrinking tube, And a connection nut fitted to the tip of the connection conduit to connect and fix the connection conduit with the high frequency device or the cooling water supply pipe.

The method of claim 1,
Wherein a plurality of knurling grooves are further formed on an outer circumferential surface of the connection conduit at intervals in the longitudinal direction.