WO2023080446A1

WO2023080446A1 - Brazing device using induction heating coil

Info

Publication number: WO2023080446A1
Application number: PCT/KR2022/014414
Authority: WO
Inventors: 홍민재; 양대현; 전윤섭
Original assignee: 천복기계(주); 주식회사 트인공조; 홍민재
Priority date: 2021-11-05
Filing date: 2022-09-27
Publication date: 2023-05-11
Also published as: KR102698303B1; KR102502606B1; KR20230065927A

Abstract

A brazing device using an induction heating coil is disclosed. The disclosed brazing device using an induction heating coil comprises: a core body in which a pair of u-shaped or E-shaped cores are arranged such that open sides thereof face each other to form a magnetic path; a support gap which is formed by the disconnection of the magnetic path of the core body, and in which an object to be welded, made of a ferromagnetic or inverse magnetic body, is inserted so as to be fixed and supported in a clamped state by means of the core body; and a heating coil which is provided on the core body in a state of crossing the support gap while forming a groove corresponding to the support gap, so as to receive high frequency power, and which performs thermogenic action for brazing a welding part of the object to be welded while generating eddy currents caused by magnetic flux flowing through the object to be welded when the high frequency power is supplied.

Description

Brazing device using induction heating coil

The present invention relates to a brazing device using an induction heating coil, and in particular, by changing the structure of the heating coil to have a magnetic path of high frequency high permeability for heating not only a ferromagnetic material but also a reverse magnetic material (diamagnetic material). It relates to a brazing device using an induction heating coil.

In general, welding is largely fusion (

; fusion welding), pressure welding (

, pressure welding)

) and soldering (or soldering) (soldering, brazing), etc. Among these types of welding, in the case of the soldering, a solder having a melting point of about 50 to 1,400 ° C is used. It is called soldering, and when it is over 450 ℃, it is called brazing.

Conventional welding of copper pipes connecting the outdoor and indoor units of air conditioners in general households, that is, brazing, uses flame welding using acetylene and oxygen. There were various problems such as unnecessary waste of time such as transportation of heavy objects such as oxygen cylinders or safety checks.

Brazing welding machines developed to solve the above problems are published in Patent Documents 1 and 2 below.

The 'copper pipe brazing device' of Patent Document 1 includes a hand-held housing, a pair of clamp members that are pivotally connected to a fixed shaft of the housing so as to face each other and have shaft holes formed at the rear end of the fixed shaft, respectively, and a housing It is fixed to an air cylinder whose piston end extends toward the rear end of the pair of clamp members, and is located between the piston and the rear end of the pair of clamp members, and one end of the pair is rotatable in the shaft hole of the pair of clamp members, respectively. A groove extending in the longitudinal direction of the copper pipe so as to surround the outer half surface of the overlapping copper pipe, which is fixed to the front end of the bracket member and the pair of clamp members, respectively, to face each other, and the other end is coupled to the piston end. It includes a pair of carbon heating element electrode members respectively formed on the clamping surface, and a power supply unit built into the housing and inputting commercial alternating current to supply electric energy to the pair of carbon heating element electrode members.'

'Portable resistance brazing welding machine of Patent Document 2, a first metal tube forming an expansion part having a larger diameter than the diameter of the tube body at one end, and a protrusion formed protruding in the outer radial direction from the outer circumferential surface of the tube body and supported by the expansion unit A portable resistance brazing welder for performing brazing welding of a second metal pipe having a second metal pipe and a filler material provided between the protruding portion and the expanded pipe and heat-sealed to join the first metal pipe and the second metal pipe. , a body case provided with a handle so as to be portable; a pair of electrode bars spaced apart from each other and installed in parallel to the body case, supplied with power from the outside, and having a seating portion on one end of which the object to be welded is seated to supply resistance heat to the object to be welded; a pair of clamping parts provided to each of the pair of electrode bars to be reciprocally movable and fixing the object to be welded on the seating part; A first driving unit provided in the body case to reciprocate the pair of clamping parts so that the welded object seated on the seating part is fixed and unfixed to the seating part, so that the operator can hold the handle and carry it. As a result, it is possible to conveniently perform a brazing welding operation regardless of a working space. In addition, it is possible to perform resistance brazing welding quickly and conveniently by directly mounting it on a long or multi-layered bent object, thereby increasing work efficiency and improving productivity. In addition, it is an innovative brazing device that does not require a professional brazing welder like gas brazing welding and anyone can do brazing welding.'

In addition, there is a brazing device for heterogeneous materials using an induction coil and an electron beam that can maximize yield and shorten process time in Patent Document 3 to prevent denaturation of material properties during the process.

However, the brazing device as described above directly flows current through the object to be welded through resistance welding, and welds with heat generated by carbon resistance or contact resistance and resistance inside the object to be welded, so there is a risk of damage such as damage to the object to be welded.

In order to solve this problem, there is a brazing device for an induction coil such as Patent Document 3, but when brazing a reverse magnetic material such as a copper pipe, for example, the voltage or frequency applied to the heating coil is increased by 100khz or more or the voltage is increased. There is a problem that it was only available in factories and cannot be used with normal household electricity capacity.

Therefore, there is an urgent need for the development of a brazing device capable of brazing objects to be welded with low power consumption and interconnecting copper pipes, which are ferromagnetic materials as well as inverse magnetic materials, with household electricity.

[Prior art literature]

[Patent Literature]

(Patent Document 1) KR Patent Registration No. 10-0829546

(Patent Document 2) KR Patent Registration No. 10-0984225

(Patent Document 3) KR Patent Registration No. 10-2287257

The present invention was developed to solve the problems of the prior art, and by changing the structure of a heating coil that generates vortex with high-frequency magnetic flux to generate heat, it has versatility for brazing ferromagnetic materials as well as inverse magnetic materials. In addition, it is to provide a brazing device using an induction heating coil that has economical efficiency that can easily braze a to-be-welded product even with household electric capacity.

The above object is achieved by a brazing device using an induction heating coil provided according to the present invention.

In the brazing apparatus using an induction heating coil provided according to one aspect of the present invention, a core body in which a pair of u-type or E-type cores are disposed facing each other to form a magnetic path ; A gap for support formed by cutting the core body and inserting a ferromagnetic or inverse magnetic material to be welded to fix and support the core body in a clamped state; And while forming a groove corresponding to the support gap, it is installed on the core body in a state of crossing the support gap to receive high frequency power, and when the high frequency power is supplied, the eddy current caused by the magnetic flux flowing to the work to be welded It includes a heating coil that generates heat for brazing the welded portion of the welded object while generating.

The heating coil is made of a hollow copper tube, and cooling water for cooling off heat is supplied to the inside of the copper tube so that it can flow.

The u-type or E-type cores are slidably connected to each other by an auxiliary magnetic tube, and the gap between the support gaps is adjusted according to the diameter of the welded object, and the u-type or E-type core ) is characterized in that a magnetic path is formed as it is without being disconnected by the auxiliary magnetic tube.

Another brazing device using an induction heating coil of the present invention includes a core body for forming a magnetic path by arranging a pair of u-type or E-type cores in a state facing the open portion side; A gap for support formed by cutting the core body and inserting a ferromagnetic or inverse magnetic material to be welded to fix and support the core body in a clamped state; While forming a groove corresponding to the support gap, it is installed on the core body in a state of crossing the support gap to receive high-frequency power, and generates a vortex due to magnetic flux flowing through the work to be welded when the high-frequency power is supplied A heating coil that generates heat while brazing the welded portion of the welded object; and an outer enclosure for accommodating and supporting the core body in a state of holding the core body from both sides, including the heating coil, with the support gap open to the outside.

The heating coil is made of a hollow copper tube, and water for cooling heat is supplied to the inside of the copper tube so that it can flow.

It is characterized in that the u-type or E-type cores are slidably connected to each other by an auxiliary magnetic tube.

A stopper is included on both side walls of the outer enclosure for fixing and supporting while adjusting the interval of the support gap according to the diameter of the object to be welded, and the stopper cuts a portion of the side wall of the outer enclosure to form the u-shaped or E The shaft is rotated through the fixing pieces protruding from the outer enclosure by forming a state in which the type core is positioned in contact with the u-type or E-type core through the opening formed to be exposed to the outside and the opening. Consists of a supported rotational shaft and a four-way fixing plate installed eccentrically on the rotational shaft to adjust the gap between the support gaps of the u-shaped or E-shaped core while rotating together when the rotational shaft is rotated, and the rotational shaft It is characterized in that it can be manually operated or automatically operated by a small motor.

According to the following embodiment of the present invention, a general-purpose effect capable of brazing a ferromagnetic body and/or a reverse magnetic body is provided by a structural change to a heating coil that generates heat, and the welded object is reduced to a factory electric capacity (approximately 6kw). ), but with household electric capacity (1000 Watt), it is convenient and economical to braze.

1 is a diagram schematically showing the configuration of a first embodiment of a brazing apparatus using an induction heating coil according to the present invention;

2 is a view schematically showing a modified example of FIG. 1 as viewed from the front;

Figure 3 is an exploded perspective view showing only the right part of Figure 2,

4 is a view schematically showing a modified example of FIG. 2 as viewed from the front.

Figure 5 is an exploded perspective view showing only the left part of Figure 4,

Figure 6 is a view showing only the stopper 115 of Figure 5 as viewed from the direction of arrow a, (a), (b), (c), and (d) are cases in which the diameter of the welded object gradually decreases from the maximum diameter indicates the operating status of

7 is a diagram schematically showing the configuration of a second embodiment of a brazing apparatus using an induction heating coil according to the present invention;

8 is a view schematically showing a modified example of FIG. 7 as viewed from the front;

FIG. 9 is an exploded perspective view showing only the right part of FIG. 8 in isolation.

The terms used in the present invention are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of the user or operator, so the definitions of these terms are meanings consistent with the technical details of the present invention. and should be interpreted as a concept.

In addition, the embodiments of the present invention do not limit the scope of the present invention, but are only illustrative of the components presented in the claims of the present invention, are included in the technical idea throughout the specification of the present invention, and constitute the claims. It is an embodiment that includes elements that can be replaced as equivalents in elements.

In addition, optional terms in the following embodiments are used to distinguish one element from other elements, and elements are not limited by the terms.

1 to 9 are views each showing detailed configurations of a brazing apparatus using an induction heating coil according to the present invention.

1 is a diagram schematically showing the configuration of a brazing apparatus using an induction heating coil according to an embodiment of the present invention.

As shown in the drawing, the brazing apparatus 100 using an induction heating coil according to an embodiment of the present invention, when viewed from the front, faces a pair of

u-shaped cores

101a and 101b of ferrite material facing the open portion side It is provided with a core body 101 that is arranged to face each other in a state to form a magnetic path.

The u-shaped

cores

101a and 101b of the core body 101 are formed by cutting with a ruler provided by the connection of the

u-shaped cores

101a and 101b A gap 102 for support is provided. The reason for forming the support gap 102 is to provide a space for inserting a polygonal or tubular ferromagnetic or inverse magnetic material to be welded 10 when viewed in cross section. When the object to be welded 10 is inserted and placed in the support gap 102 in a horizontal state, the welded portion of the object to be welded 10 is cross-sectioned in the

u-shaped cores

101a and 101b facing each other ( It forms a state of being held by the end surface and forms a magnetic path continuous with the

u-shaped cores

101a and 101b while being in close contact with the end surface. The reason why the object to be welded 10 forms a magnetic path continuous with the

u-shaped cores

101a and 101b is to allow heat generated when magnetic flux passes through the object to be welded 10 to weld the portion to be welded.

As shown in FIG. 1, the support gap 102 formed by the disconnection of the

u-shaped cores

101a and 101b has a diameter of the object to be welded 10 to be inserted into the support gap 102. If it is larger or smaller than the spacing of the gaps 102 for support, it is necessary to adjust the spacing of the gaps 102 for support. In this case, the facing ends of the

u-shaped cores

101a and 101b on the lower side where the support gap 102 is formed are made of the same ferrite material as the

u-shaped cores

101a and 101b and have a hollow shape with both ends open. Connected to the auxiliary magnetic tube 103, the facing ends of the

u-shaped cores

101a and 101b slide from the auxiliary magnetic tube 103 to a spaced or approached position while supporting the support The interval of the dragon gap 102 can be freely adjusted.

In the case where there is no need to adjust the distance between the support gaps 102 and a fixed distance is always maintained, the auxiliary magnetic tube 103 may be omitted. When the auxiliary magnetic tube 103 is omitted, the facing ends of the

u-shaped cores

101a and 101b in which the auxiliary magnetic tube 103 is installed are always in contact without interruption. You have to keep the state.

As shown in the drawing, in the support gap 102 formed by the magnetic break of the core body 101, a heating coil 105 is installed in a state of crossing the support gap 102, the heating coil ( 105) is supplied with high frequency power (approximately 100 KHz) generated from the high frequency generator 4 electrically connected to the rectifier 2 to which commercial power (110 or 220V) is input. When high-frequency power is supplied to the heating coil 105, the heating coil 105 generates a vortex due to the magnetic flux flowing through the object to be welded 10, while generating heat for brazing the welded portion of the object to be welded 10 Initiate. At a portion corresponding to the support gap 102 of the heating coil 105, the welded object 10 is positioned in the support gap 102 to be in close contact with the facing ends of the

u-shaped cores

101a and 101b It is preferable to form the coil groove part 105-1 corresponding to the interval of the gap 102 for support so that there is no great difficulty in doing so.

The reason why the gap between the coil grooves 105-1 is wider than that of the gap 102 for support is that the gap between the gaps 102 for support is adjusted so that even if a large-diameter welded object is located, the welded object is This is to increase the vortex generation efficiency by being positioned as closely as possible to the facing ends of the

u-shaped cores

101a and 101b.

The heating coil 105 may be formed of a hollow copper tube. The reason for this is to continuously flow by supplying cooling water to cool the high-temperature heat of the heating coil 105 into the inside of the copper tube forming the heating coil 105 . In the drawing, the flow of cooling water is shown as being cut off, but in reality it is continuously circulated.

In this embodiment, the to-be-welded object 10 is shown as an example of using a tubular copper pipe (inverse magnetic material) used in an air conditioner. Since a filler metal such as silver or lead is previously attached to the connection portion of the welded object 10, that is, the welded portion, the filler metal is melted when the heating coil 105 generates heat, The object to be welded 10 can be integrally brazed.

When the air-core inductor, which is the heating coil 105, is inserted into the

u-shaped cores

101a and 101b, the magnetic resistance can be reduced compared to the air-core inductor made only of the heating coil 105, and the same voltage Even at overfrequency, the magnetic flux increases a lot and high heat is generated, so it gives the benefit of being able to braze the welded object even with household electric capacity.

FIG. 2 is a schematic view of FIG. 1 as seen from the front, and FIG. 3 is an exploded perspective view showing only the right portion of FIG. 2 in isolation. The same parts as those of the above embodiment are denoted by the same reference numerals to avoid redundant description.

As shown in the drawing, in the brazing apparatus 100a using an induction heating coil according to the present embodiment, a pair of

u-shaped cores

101a and 101b are placed in a state in which the open portion side faces each other, thereby forming a magnetic path The core body 101 and the core body 101 are formed by disconnection of the core body 101, and a welded product of a ferromagnetic or inverse magnetic body is inserted to cause the core body 101 to be clamped and supported While forming a gap 102 for support and a groove 105-1 corresponding to the gap 102 for support, the core body is in a state of crossing the gap 102 for support It is installed in (101) so that power can be supplied, and when power is supplied, generating eddy currents due to magnetic flux flowing to the object to be welded 10 Heating to generate heat for brazing the welded portion of the object to be welded 10 The configuration of the coil 105 is all the same as that of the above embodiment, and only the configuration of the outer enclosure 110 for receiving and supporting the core body 101 is different from the above embodiment.

Therefore, hereinafter, only the configuration of the external enclosure 110 will be described with emphasis. The outer enclosure 110 accommodates and supports the core body 101 and the other components in order to protect the core body 101 and other components from the outside and give them a sense of beauty. (110) is long from the lower side of the housing portion 112 and the housing portion 112 forming the receiving space 113 for directly receiving and supporting the core body 101 on both sides of the core body 101 It consists of a handle part 111 that extends and can be held by hand, and by bringing the handle part 111 into contact with each other and fastening with a screw or bolt, the housing part 112 holds the core body 101 The core body 101 is accommodated and supported while achieving a pinched state.

The auxiliary magnetic tube 103 may be installed on the core body 101 or may be omitted. In the case of installing the auxiliary magnetic tube 103, a screw or By separating the bolt or the like, the gap 102 for support can be adjusted to a larger interval according to the diameter of the object to be welded. According to the gap 102 for support adjusted to be larger, the handle parts 111 of the receiving part 112 of the outer enclosure 110 can also be adjusted and fixed with bolts while being spaced apart from each other. can The drawings indicate that the minimum diameter of the welded object is brazed.

The configuration of the outer enclosure 110 is the same on both sides, so only the right portion is separately displayed in FIG. 2 . Other configurations and operations in the above embodiment are the same as those of the above embodiment, so a separate description thereof will be omitted.

Reference numerals 103-1 and 103-2 denote guide protrusions and guide grooves installed on the auxiliary magnetic tube 103 and the u-shaped core 101b to function as rails, respectively.

FIG. 4 is a schematic view of FIG. 2 as viewed from the front as a modification of FIG. 2, and FIG. 5 is an exploded perspective view showing only the left portion of FIG.

As shown in the drawings, this embodiment is different from the embodiments of FIGS. 2 and 3 only in the configuration of having the stopper 115, but other configurations are the same. Therefore, hereinafter, only the configuration of the stopper 115 will be mainly described. In addition, since the stopper 115 is the same on both sides, only the stopper 115 installed on the left side as seen in the drawing will be described as an example.

The stopper 115 is formed by cutting a portion of the central portion of the outer wall on both sides outside the housing portion 112 of the enclosure 110 so that the u-shaped core 101a is exposed to the outside. (115-1) and fixing pieces (115-1) protruding from the outside of the receiving compartment (112) through the opening (115-1) to be positioned in contact with the u-shaped core (101a). 2) a rotational shaft 115-3 supported to rotate through and eccentrically installed on the rotational shaft 115-3 so that the rotational shaft 115-3 is rotated together using a driver while rotating the u-shaped It is composed of a four-way fixing plate 115-4 that adjusts the spacing of the support gap 102 of the core 101a, and the rotating shaft 115-3 is manually operated by a driver or not shown It can be operated automatically by linking with a small motor.

The reason why the stopper 115 is installed is to maintain the adjusted state by adjusting the interval of the support gap 102 supporting the welded object 10 . An operation of adjusting the distance of the gap 102 for support by the stopper 115 will be described with reference to FIG. 6 . Figure 6 is a view showing only the stopper 115 of Figure 5 as viewed from the direction of arrow a, (a), (b), (c), and (d) are cases in which the diameter of the welded object gradually decreases from the maximum diameter indicates the operating status of

As shown in the drawing, FIGS. 6 (a), (b), (c), and (d) show the case where the welded object is positioned between the gaps 102 for support, for example, the welded object of the gap 102 for support. Whenever something smaller than the gap is located, the fixing plate 115-4 according to the manipulation of the rotating shaft 115-3 is also rotated together by the operator using a screwdriver to accommodate the housing unit 112 of the enclosure 110 The

u-shaped cores

101a and 101b are moved inward as much as the length of the fixing plate 115-4 to adjust the interval of the support gap 102 according to the diameter of the welded object, and the above In the case of the opposite in the same adjusted state, the fixing plate 115-4 may be rotated in the opposite direction to the above.

The

u-shaped cores

101a and 101b move more stably and smoothly from the assistant tube 103 by the rail function of the guide groove 103-1 and the guide protrusion 103-2 during movement. Other configurations and operations in the above embodiment are the same as those of the above embodiments, so a separate description is omitted.

7 is a diagram schematically showing the configuration of a second embodiment of a brazing apparatus using an induction heating coil according to the present invention. The same parts as those of the above embodiment are marked with the same reference numerals to avoid redundant description.

As shown in the drawing, in the brazing apparatus 200 using an induction heating coil according to the present embodiment, only the ferrite core body 101 is configured using

E-type cores

101a and 101b, Unlike the example, the magnetic path of the E-type core (101a, 101b) is disconnected to form a support gap 102 for the object to be welded, and the heating coil 105 is applied to the support gap 102 It is installed by crossing and installed on the E-shaped core (101a, 101b), and the auxiliary magnetic tube (103) is installed at the disconnected part of the E-shaped core (101a, 101b) to continue Brazing the welded part of the welded object with the heat generated at this time by inducing a vortex in the heating coil 105 by the magnetic flux flowing through the welded object 10 located in the support gap 102 while forming a magnetic path same as example

However, in the case of the

E-shaped cores

101a and 101b, unlike the

U-shaped cores

101a and 101b, a gap is formed in the center to support the weld to be brazed, a heating coil is installed, and Brazing can be performed with less power consumption by placing an auxiliary rotor tube to reduce magnetic resistance, allowing more magnetic flux to flow and increasing vortex generation efficiency.

Other configurations and operations in the above embodiment are the same as those of the above embodiments, so a separate description is omitted.

FIG. 8 is a view schematically showing a modified example of FIG. 7 as viewed from the front, and FIG. 9 is an exploded perspective view showing only the right portion of FIG. 8 in isolation. The same parts as those in the above embodiment are denoted by the same reference numerals to avoid redundant description.

As shown in the drawing, in the brazing apparatus 200a using an induction heating coil according to the present embodiment, a pair of

E-type cores

101a and 101b are placed in a state in which the open portion side faces each other to form a magnetic path The core body 101 and the core body 101 are formed by disconnection of the core body 101, and a welded product of a ferromagnetic or inverse magnetic body is inserted to cause the core body 101 to be clamped and supported While forming a gap 102 for support and a groove 105-1 corresponding to the gap 102 for support, the core body is in a state of crossing the gap 102 for support It is installed in 101 so that it can receive high-frequency power, and when the high-frequency power is supplied, a vortex caused by the magnetic flux flowing through the object to be welded 10 is generated while generating heat for brazing the welded portion of the object to be welded 10 The configuration of the heating coil 105 is the same as that of the above embodiment, and only the configuration of the outer enclosure 210 for receiving and supporting the core body 101 is different from the above embodiment.

Therefore, hereinafter, only the configuration of the external enclosure 210 will be described with emphasis. The outer enclosure 210 is to receive and support the core body 101 and other components in order to have a sense of beauty while protecting the core body 101 and other components from the outside, the outer enclosure ( 210) is the left and right accommodating portion 212 forming an accommodating space 213 for directly accommodating and supporting the core body 101 on both left and right sides of the core body 101, and the lower side of the left and right accommodating portion 212 It is made of a handle part 211 that extends from the handle part 211 so that it can be held by hand, and by connecting the handle part 211 to each other and fastening with a screw or bolt, ) While achieving a state of clamping, the core body 101 is accommodated and supported.

By the support gap (Gap) 102 formed in the central part of the core body 101, the broken parts of the ruler formed in the upper and lower parts of the core body 101 are interconnected using auxiliary rulers 201 and 202 A magnetic path can be formed by The

auxiliary passages

201 and 202 are formed in a flat plate shape with the same ferrite as the core body 101. As seen in the drawing, the upper auxiliary passage 201 located on the upper side of the

auxiliary passages

201 and 202 has a predetermined height. By forming a protruding locking jaw 201-1, as seen in the drawing, it is caught in the locking groove 213-1 formed inside the upper part of the open portion of the left and right storage compartments 213, so that the left and right storage compartments 213 act as upper assistants. (201) can prevent it from easily escaping. On the other hand, the lower auxiliary path 202 formed flat without a locking jaw is positioned on the lower side of the core body 101 and inserted into the inner bottom of the left and right receiving compartments 213 to form an auxiliary path , In the lower auxiliary passage 202, the handle 211 extending long from the left and right accommodating parts 213 is coupled with a bolt or the like, and the upper part of the left and right accommodating parts 213 is the upper auxiliary passage ( 201) is in a state where the locking jaws 201-1 are caught in the locking grooves 213-1 of the left and right housing parts 213, so that they are stably positioned without being separated from the left and right housing parts 213.

This embodiment can be used for brazing only the welded object having a diameter corresponding to the support gap 102 .

In the above embodiment, the core body 101 has been described as being configured in a rectangular shape as an example, but it may be configured in a rod shape.

The configuration of the outer enclosure 210 is the same on both sides, so only the right portion is shown separately in FIG. 8, and other configurations and actions are the same as those of the above embodiment, so a separate description is omitted.

Although the present invention has been described in detail through specific examples, this is for explaining the present invention in detail, the present invention is not limited thereto, and within the technical spirit of the present invention, by those skilled in the art It is clear that modifications and improvements are possible. All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific protection scope of the present invention will be clarified by the appended claims.

[Description of code]

4: high frequency generator

10: Work to be welded

100: brazing device using an induction heating coil

101a, 101b: u-shaped core made of ferrite

102: gap for support

103: auxiliary magnetic tube

105: heating coil

110,210: external enclosure

115: 4-way stopper

According to the present invention, it can be used with a general household electric capacity, and there is usefulness that it can be provided for brazing of to-be-welded objects anywhere outside.

Claims

a core body in which a pair of u-shaped or E-shaped cores are disposed facing each other to form a magnetic path;

A gap for support formed by cutting the core body and inserting a ferromagnetic or inverse magnetic material to be welded to fix and support the core body in a clamped state; and

While forming a groove corresponding to the support gap, it is installed on the core body in a state of crossing the support gap to receive power, and while generating a vortex due to magnetic flux flowing to the welded object when power is supplied, A brazing device using an induction heating coil including a heating coil that generates heat for brazing a welded portion of a welded object.
According to claim 1,

The heating coil is made of a hollow copper tube, and a brazing device using an induction heating coil, characterized in that the cooling water for cooling the heat is supplied to the inside of the copper tube so that it can flow.
According to claim 1,

The u-type or E-type cores are slidably connected to each other by an auxiliary magnetic tube, and the gap between the support gaps is adjusted according to the diameter of the welded object, and the u-type or E-type core ) A brazing device using an induction heating coil, characterized in that the mutually formed magnetic path that is not disconnected by the auxiliary magnetic tube (管) as it is.
a core body in which a pair of u-shaped or E-shaped cores are disposed facing each other to form a magnetic path;

A gap for support formed by cutting the core body and inserting a ferromagnetic or inverse magnetic material to be welded to fix and support the core body in a clamped state;

While forming a groove corresponding to the support gap, it is installed on the core body in a state of crossing the support gap to receive power, and while generating a vortex due to magnetic flux flowing to the welded object when power is supplied, A heating coil that generates heat for brazing the welded part of the object to be welded; and

Brazing device using an induction heating coil comprising: an outer enclosure for receiving and supporting the core body in a state of holding the core body from both sides, including the heating coil, with the support gap open to the outside.
According to claim 4,

The heating coil is made of a hollow copper tube, and brazing device using an induction heating coil, characterized in that the inside of the copper tube is supplied with water to cool the heat so that it can flow.
According to claim 5,

Brazing device using an induction heating coil, characterized in that the u-type or E-type cores are slidably connected to each other by an auxiliary magnetic tube.
According to claim 6,

A stopper is included on both side walls of the enclosure body for fixing and supporting while adjusting the interval of the support gap according to the diameter of the object to be welded,

The stopper is in contact with the u-type or E-type core through an opening formed by cutting a part of the side wall of the outer enclosure so that the u-type or E-type core is exposed to the outside and the opening A rotation shaft supported to be rotated through the fixing pieces protruding from the outer enclosure and installed eccentrically on the rotation shaft to rotate together during the rotation operation of the rotation shaft, so that the u-type or E-type core Brazing device using an induction heating coil, characterized in that it is composed of a four-way fixing plate that supports to adjust the spacing of the support gap, and the rotating shaft can be operated manually or automatically by a small motor.