CN220838330U

CN220838330U - Brazing device

Info

Publication number: CN220838330U
Application number: CN202322302788.9U
Authority: CN
Inventors: 吴凯; 胡程; 吴开灿
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2023-08-25
Filing date: 2023-08-25
Publication date: 2024-04-26
Anticipated expiration: 2033-08-25

Abstract

The application discloses a brazing device which comprises a coil, two connecting pipes and a supporting piece, wherein the coil defines an induction heating area, the induction heating area is used for penetrating a workpiece to be welded, the two connecting pipes are arranged side by side, the coil is connected to first ends of the two connecting pipes, the connecting pipes are provided with a power supply connection structure and are used for being connected to a power supply, one end of the supporting piece is connected with the coil, and the other end of the supporting piece is connected with the connecting pipes. According to the embodiment of the application, one end of the supporting piece is connected with the coil, and the other end of the supporting piece is connected with the connecting pipe, so that the stress state of the cantilever of the coil is improved, the fixing effect of the coil is enhanced, and the deformation phenomenon of the coil in the use process is reduced; secondly, through setting up support piece, can make the position of coil keep better uniformity, reduce the beat possibility of coil to realize treating the more even heating effect of welded work piece.

Description

Brazing device

Technical Field

The application relates to the technical field of welding, in particular to a brazing device.

Background

Induction brazing is a method of brazing using the principle of induction heating. It generates eddy currents induced by an electromagnetic field on the surface of the work pieces to be welded by means of an induction heating device such as a coil, heats the brazing area to a desired temperature, and then melts it by adding solder, and enables a strong connection to be formed after cooling.

The coil is a core component in the induction brazing system, and the heating uniformity, the brazing qualification rate and the like of the workpiece are directly affected.

In the related art, the coil is easy to deform when being subjected to external force in the using process.

Disclosure of utility model

In order to solve the technical problems, the application provides a brazing device for reducing deformation of a coil in the using process.

The application is realized by the following technical scheme.

The present application provides a brazing apparatus comprising:

the coil is used for defining an induction heating area, and the induction heating area is used for penetrating a workpiece to be welded;

The coils are connected to the first ends of the two connecting pipes, and the connecting pipes are provided with power supply connecting structures and are used for connecting power supplies;

and one end of the supporting piece is connected with the coil, and the other end of the supporting piece is connected with the connecting pipe.

In the technical scheme, one end of the supporting piece is connected with the coil, and the other end of the supporting piece is connected with the connecting pipe, so that the stress state of the cantilever of the coil is improved, the fixing effect of the coil is enhanced, and the deformation phenomenon of the coil in the use process is reduced; secondly, through setting up support piece, can make the position of coil keep better uniformity, reduce the beat possibility of coil to realize treating the more even heating effect of welded work piece.

In some embodiments, the coil is formed from tubing that is wound with an outer diameter of the connecting tube that is greater than the outer diameter of the tubing.

According to the technical scheme, the outer diameter of the connecting pipe is larger than that of the pipe, so that the strength and stability of the connecting part of the connecting pipe and the coil are improved, the shearing resistance is better, the coil can be better supported by the cantilever, and the possibility of deformation or damage caused by torque application is reduced; in addition, the outer diameter of the connecting pipe is larger than that of the pipe, so that a larger area of a connecting part can be provided, accurate control of the position of the coil is facilitated, and the position and fixation of the coil can be determined by arranging a proper clamping device or adjusting a connecting mode in the connecting pipe, thereby ensuring the correct positioning of the coil and a workpiece

In some embodiments, the coil has a dimension in the first direction that is greater than a dimension in the second direction, wherein the connection tube is connected to one end of the coil in the first direction, and the two connection tubes are arranged side by side in the second direction; the first direction is perpendicular to the second direction.

In the technical scheme, the coil can adapt to workpieces to be welded with different sizes and shapes by enabling the size of the coil along the first direction to be larger than that along the second direction, and the support piece is convenient to install in the first direction of the coil, so that the fixing effect of the support piece on the coil is improved.

In some embodiments, the coil is provided with a support on opposite sides in the second direction.

According to the technical scheme, the supporting pieces are arranged on the two opposite sides of the coil along the second direction, the supporting pieces on the two sides of the coil can more stably support the coil, the mechanical strength of the coil is further improved, the vibration resistance and deformation resistance of the coil are improved, and the deformation phenomenon of the coil in the heating process is reduced.

In some embodiments, the coil, the two connection tubes, and the two supports are all symmetrically arranged about the same plane.

In the technical scheme, the symmetrical arrangement can more effectively utilize space, so that the distance and the position among the coil, the two connecting pipes and the two supporting pieces are uniform, and the structure is more compact; secondly, the symmetrical arrangement can improve the stability of the brazing device; in addition, the whole installation of the brazing device is facilitated.

In some embodiments, the brazing device comprises a plurality of studs and a plurality of nuts, wherein one end of one part of the studs is connected with the coil, one end of the other part of the studs is connected with the connecting pipe, the support piece is provided with a plurality of mounting holes, the studs pass through the mounting holes, and the nuts are sleeved on the studs and fasten the support piece on the studs.

In the technical scheme, the stud is arranged on the coil and the connecting pipe, the mounting hole is formed in the supporting piece, and the supporting piece is convenient to assemble and disassemble and easy to assemble and disassemble for many times.

In some embodiments, the stud fixed to the coil is a first stud, the first stud being welded to the coil; and/or the stud fixed on the connecting pipe is a second stud, and the second stud is welded with the connecting pipe.

In the technical scheme, the first stud is welded with the coil, the second stud is welded with the connecting pipe, the working procedure is simple, and the production cost is reduced.

In some embodiments, the stud fixed to the coil is a first stud, the tube of the coil is provided with a first through hole, the first through hole penetrates through the tube walls on two opposite sides of the tube, and the first stud penetrates through the first through hole; and/or the stud fixed on the connecting pipe is a second stud, the connecting pipe is provided with a second through hole, the second through hole penetrates through the pipe walls on the two opposite sides of the connecting pipe, and the second stud penetrates through the second through hole.

According to the technical scheme, the first stud penetrates through the first through hole to be fixed on the coil, so that the connection strength of the first stud and the coil is improved, the second stud penetrates through the second through hole to be fixed on the connecting pipe, the connection strength of the second stud and the connecting pipe is improved, and the fixing effect of the supporting piece on the coil is further improved.

In some embodiments, the number of turns of the coil does not exceed 3.

According to the technical scheme, shaking deformation caused by overlarge coil gravity can be reduced, and stability of the coil in the working process is improved.

In some embodiments, the tubing of the coil has a flow passage inside, the connection tube has a cooling passage, and the flow passage communicates with the cooling passages of the two connection tubes.

In the technical scheme, the cooling channel does not occupy the space outside the connecting pipe, the coil does not additionally occupy the space outside the pipe of the coil, and cooling after coil brazing is completed, so that the brazing device is compact in structure and space occupation is reduced.

In some embodiments, the interior of the connecting tube has a first cavity, the first cavity and the cooling channel are not in communication with each other, the side wall of the first cavity is provided with a first threaded hole, the support is provided with a first through hole, and the brazing device comprises a first screw which passes through the first through hole and the first threaded hole and extends into the first cavity.

In the technical scheme, the first screw only utilizes the space in the first cavity, and the space of the cooling channel is not occupied, so that the influence of cooling liquid on the first screw is reduced, the fixing effect of the first screw is improved, and the connection strength of the connecting pipe and the supporting piece is further improved.

In some embodiments, the tube of the coil has a second cavity inside, the second cavity and the flow channel are not communicated with each other, the side wall of the second cavity is provided with a second threaded hole, the support piece is provided with a second through hole, and the brazing device comprises a second screw which penetrates through the second through hole and the second threaded hole and stretches into the second cavity.

In the technical scheme, the second screw only utilizes the space in the second cavity, so that the space of the flow channel is not occupied, the influence of cooling liquid on the second screw is reduced, the fixing effect of the second screw is improved, and the connection strength of the coil and the supporting piece is further improved.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the accompanying drawings. In the drawings:

FIG. 1 is a schematic view of a brazing apparatus according to some embodiments of the application;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;

FIG. 3 is a schematic illustration of the connection of a coil and a support according to some embodiments of the application;

fig. 4 is a schematic diagram of the connection of a connection tube and a support member according to some embodiments of the present application.

Description of the reference numerals

A coil 1; an induction heating region 1a; a second cavity 1b; a flow channel 1c; a second screw hole 1d; a connecting pipe 2; a power supply connection structure 2a; a first cavity 2b; a cooling passage 2c; a first screw hole 2d; a liquid inlet 2e; a liquid outlet 2f; a support 3; a first through hole 3a; a second through hole 3b; a mounting hole 3c; a stud 4; a first stud 41; a second stud 42; a nut 5; a first screw 6; a second screw 7.

Detailed Description

Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present application, the technical terms "first," "second," "third," etc. are used merely to distinguish between different objects and should not be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In this context, the character "/" generally indicates that the associated object is an "or" relationship.

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "length", "width", "thickness", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc. are orientation or positional relationship based on the drawings, and are merely for convenience of describing the embodiments of the present application and for simplifying the description, and are not intended to indicate or imply that the apparatus or element in question must have a specific orientation, be constructed, operated, or used in a specific orientation, and thus should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the term "contact" is to be understood in a broad sense as either direct contact or contact across an intermediate layer, as either contact with substantially no interaction force between the two in contact or contact with interaction force between the two in contact.

Induction brazing is a method of brazing using the principle of induction heating. It generates eddy currents induced by an electromagnetic field on the surface of the work pieces to be welded by means of an induction heating device, such as an induction coil, so that the brazing area is heated to a desired temperature, and then the brazing filler metal is added to melt it, and a strong connection can be formed after cooling.

The coil is a core component in the induction brazing system, and the heating uniformity, the brazing qualification rate and the like of the workpiece are directly affected. In the induction brazing process, alternating current is introduced into the coil to generate an alternating magnetic field, the alternating magnetic field interacts with a working magnetic field to generate electromagnetic force, when the electromagnetic force reaches a certain degree, vibration or shaking of the coil can be caused, the structural design of the coil is possibly not firm or stable enough, shaking is easily caused by the influence of external vibration or internal electromagnetic force, and the coil is easy to deform due to shaking. In the related art, the stability of the coil structure may be improved by increasing the coil size and modifying the coil structure.

However, the applicant has found that in the related art, increasing the coil size increases the space occupation of the brazing device, changing the coil structure affects the induction heating efficiency of the coil, and increasing the coil size and improving the coil strength of the changed coil structure are insufficient to suppress the deformation of the coil.

Based on the above-mentioned considerations, in order to solve the problem of deformation of the coil during use, the inventors have conducted intensive studies and devised a soldering apparatus which is connected to the coil and the connection pipe through the support member, respectively, thereby achieving fixation of the coil. The coil can be supported and fixed in a reinforced manner, and deformation of the coil due to shaking is reduced.

The brazing device disclosed by the embodiment of the application can be used in the fields of automobile manufacturing, aerospace industry, railway traffic, electronic and electrical appliance industry, chemical equipment and the like. For example, induction brazing is used in the automotive field for joining automotive parts, such as engine parts, exhaust systems, brake systems, etc. As another example, induction soldering is used to connect electronic and electrical components, such as circuit boards, connectors, heat sinks, and the like.

The brazing device disclosed by the embodiment of the application can be used for connecting metal materials and non-metal materials. For example, the brazing apparatus is suitable for connection between various metals, such as steel, aluminum, copper, nickel alloys, and the like; for another example, the brazing apparatus may also be used for joining metallic and non-metallic materials, such as joining metals to ceramics, metals to graphite, and the like.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a brazing apparatus according to some embodiments of the present application.

The embodiment of the application provides a brazing device which comprises a coil 1, a connecting pipe 2 and a supporting piece 3. The coil 1 defines an induction heating region 1a, the induction heating region 1a being intended to be threaded through a workpiece to be welded. The number of the connection pipes 2 is two, the two connection pipes 2 are arranged side by side, the coil 1 is connected to the first ends of the two connection pipes 2, and the connection pipes 2 are provided with a power connection structure 2a for connecting in a power supply. One end of the supporting member 3 is connected with the coil 1, and the other end is connected with the connecting tube 2.

The induction heating region 1a refers to a region that can be heated by electromagnetic induction. It can be understood that the workpiece to be welded is placed in the induction heating area 1a of the coil 1, the coil 1 is electrified with alternating current to generate an induction electromagnetic field, and the surface of the workpiece to be welded is coupled to generate induction electromotive force, so that induction eddy current is formed on the surface of the workpiece to be welded, and heating is performed by virtue of the eddy current.

By side-by-side is meant that one of the connecting pipes 2 is located at a side of the other connecting pipe 2, and the length directions of the two are parallel or intersecting.

The power supply connection structure 2a refers to a structure or interface for connecting a power supply. For example, the power supply connection structure 2a may be a connection wire, a plug, a connection terminal, or the like.

The power supply is capable of providing electrical energy to the coil 1. The power supply device may be a high frequency generator, for example.

The coil 1 is connected to the first ends of the two connection pipes 2, that is, the power output from the power source flows into the connection pipe 2 through the power connection structure 2a, and is transmitted to the coil 1 through the first ends of the connection pipes 2. The coil 1 and the two connection pipes 2 are connected to a circuit, and the two are connected in series in the circuit.

One end of the supporting member 3 is connected with the coil 1, and the other end is connected with the connecting pipe 2, that is, one end of the supporting member 3 can abut against the coil 1, and the supporting and fixing of the coil 1 are enhanced.

According to the brazing device provided by the embodiment of the application, one end of the supporting piece 3 is connected with the coil 1, and the other end of the supporting piece is connected with the connecting pipe 2, so that the cantilever stress state of the coil 1 is improved, the fixing effect on the coil 1 is enhanced, and the deformation phenomenon of the coil 1 in the use process is reduced; secondly, through setting up support piece 3, can make the position of coil 1 keep better uniformity, reduce the beat possibility of coil 1 to realize treating the more even heating effect of waiting the welded work piece.

The material of the supporting member 3 is not limited.

In some embodiments, the support 3 is made of a flame-resistant and high-temperature-resistant material. In this way, the support 3 is able to withstand the temperature of the induction heating region 1a without deformation and erosion during operation of the coil 1.

The support 3 is illustratively made of an insulating material. Illustratively, the material of the support 3 may be silicon carbide ceramic, aluminum silicate fiber, or the like. It can be appreciated that by making the support 3 of an insulating material, the phenomenon that current leakage occurs between the coil 1 and the support 3 to break through the insulating layer of the coil 1 can be reduced, and the phenomenon that the support 3 causes damage to the coil 1 during the brazing process can be reduced.

In some embodiments, the coil 1 is formed by winding a tube, and the outer diameter of the connecting tube 2 is larger than the outer diameter of the tube.

The coil 1 is formed by bending a pipe material, and the coil 1 is a ring-shaped or spiral structure formed by bending a section of pipe material in a bending manner. Wherein, cyclic refers to: in the plane defined by the ring-like structure, the ring-like structure encloses a closed contour shape, e.g. circular, elliptical, rectangular, etc.

Illustratively, the tubing may be copper tubing, aluminum tubing, copper aluminum composite tubing, or other alloy materials, and the like.

It will be appreciated that by winding the tubing into the coil 1, the length of the coil 1 can be increased, thereby increasing the contact area between the coil 1 and the workpiece to be welded, and achieving more efficient electromagnetic induction heating.

In the embodiment, the outer diameter of the connecting pipe 2 is larger than that of the pipe, so that the strength and stability of the joint of the connecting pipe 2 and the coil 1 can be improved, the shearing resistance is better, the coil 1 can be better supported by a cantilever, and the possibility of deformation or damage caused by torque application is reduced; in addition, the external diameter of the connecting pipe 2 is larger than that of the pipe, so that larger area of the connecting part can be provided, accurate control of the position of the coil 1 is facilitated, and the position and fixation of the coil 1 can be determined by arranging a proper clamping device or adjusting a connecting mode in the connecting pipe 2, so that correct positioning of the coil 1 and a workpiece is ensured.

The number of windings of the coil 1 is not limited. Illustratively, one or more turns may be provided.

Referring to fig. 2, fig. 2 is a schematic structural diagram of fig. 1 at another view angle. In some embodiments, the number of turns of the coil 1 does not exceed 3.

That is, the number of turns of the coil 1 may be 1, 2 or 3.

In this embodiment, the number of windings of the coil 1 is not more than 3, so that shaking deformation caused by excessive gravity of the coil 1 can be reduced, and stability of the coil 1 in the working process is improved.

It will be appreciated that when the number of turns of the coil 1 is 2 or 3, the support 3 may be mounted for each turn of the coil 1; the support 3 can be installed only through one circle of the coil 1, the coil 1 can be fixed, and the cost is reduced.

In some embodiments, the dimension of the coil 1 in the first direction is larger than the dimension in the second direction, wherein the connection tube 2 is connected to one end of the coil 1 in the first direction, and the two connection tubes 2 are arranged side by side in the second direction, the first direction being perpendicular to the second direction.

The two connection pipes 2 are arranged side by side in a second direction, the first direction being perpendicular to the second direction, that is, each connection pipe 2 extends in the first direction.

Like this, through with the size of coil 1 along the first direction be greater than along the size of second direction, coil 1 can adapt to the work piece of waiting of different sizes and shapes, and has made things convenient for support piece 3 to install in the first direction of coil 1, has improved support piece 3 to the fixed effect of coil 1.

The number of the supporting members 3 is not limited and may be one or more.

In some embodiments, the coil 1 is provided with a support 3 on opposite sides in the second direction.

It will be appreciated that at least one support 3 is provided on each of the opposite sides of the coil 1 in the second direction, i.e. at least two supports 3 are provided on each of the two connection pipes 2.

In this embodiment, by providing the supporting members 3 on both opposite sides of the coil 1 in the second direction, the supporting members 3 on both sides of the coil 1 can more stably support the coil 1, further increasing the mechanical strength of the coil 1, improving its vibration and deformation resistance, and reducing the deformation phenomenon of the coil 1 during heating.

The surface of the support 3 for supporting and fixing the coil 1 is illustratively a support surface, i.e. the coil 1 is fitted in the support 3 with the support surface, which may be a plane or a curved surface. When the supporting surface is a plane, the supporting member 3 may be a plate-like structure; when the support surface is curved, the support member 3 may be a curved plate-like structure.

In some embodiments, the coil 1, the two connection pipes 2 and the two supports 3 are all symmetrically arranged about the same plane.

In this embodiment, the symmetrical arrangement can more effectively utilize space, make the distance and position between the coil 1, the two connection pipes 2, and the two supports 3 uniform, and further make the structure more compact; secondly, the symmetrical arrangement can improve the stability of the brazing device; in addition, the whole installation of the brazing device is facilitated.

In some embodiments, the tube of the coil 1 has a flow channel 1c inside, the connection tube 2 has a cooling channel 2c, and the flow channel 1c communicates with the cooling channels 2c of the two connection tubes 2.

It will be appreciated that the cooling fluid flows through the cooling channel 2c, and after the brazing operation is completed, the cooling fluid can flow into the interior of the tube of the coil 1 through the cooling channel 2c to cool the coil 1.

It will be appreciated that the two connection pipes 2 are respectively formed with a liquid inlet 2e and a liquid outlet 2f, the first ends of the two connection pipes 2 are respectively formed with a passage opening of a cooling passage 2c, the connection ends of the coil 1 and the two connection pipes 2 are respectively formed with an inlet and an outlet of a flow passage 1c, the two connection pipes 2 are respectively a first connection pipe 2 and a second connection pipe 2, the cooling liquid flows into the cooling passage 2c through the liquid inlet 2e of the first connection pipe 2, flows into the inlet of the flow passage 1c through the passage opening, flows into the cooling passage 1c to cool the coil 1, flows into the cooling passage 2c through the passage opening of the second connection pipe 2 from the outlet of the flow passage 1c, and flows out from the liquid outlet 2f of the second connection pipe 2.

The cooling liquid may be water, glycerin, glycol-based solution, or the like for cooling.

In this embodiment, the cooling channel 2c does not occupy the space outside the connecting pipe 2, the coil 1 does not occupy the space outside the pipe of the coil 1 additionally, and cooling after the brazing work of the coil 1 is completed, so that the brazing device has a compact structure, and space occupation is reduced.

The connection manner of the coil 1, the support 3 and the connection pipe 2 is not limited.

Referring to fig. 4, fig. 4 is a schematic diagram illustrating connection between the connecting pipe 2 and the supporting member 3 according to some embodiments of the present application. In some embodiments, the connecting tube 2 has a first cavity 2b inside, the first cavity 2b and the cooling channel 2c are not communicated with each other, a first threaded hole 2d is provided on a side wall of the first cavity 2b, a first through hole 3a is provided on the support 3, and the brazing device includes a first screw 6, and the first screw 6 penetrates through the first through hole 3a and the first threaded hole 2d and extends into the first cavity 2 b.

The first cavity 2b and the cooling passage 2c are not in communication with each other, meaning that the cooling liquid does not flow from the cooling passage 2c into the first cavity 2b, nor from the first cavity 2b into the cooling passage 2c.

The first cavity 2b can provide a space for the first screw 6 to fix the connection pipe 2 and the support 3. That is, the first screw 6 uses only the space in the first cavity 2b, and does not occupy the space of the cooling channel 2c, thereby reducing the influence of the cooling liquid on the first screw 6, improving the fixing effect of the first screw 6, and further improving the connection strength of the connection pipe 2 and the support member 3.

In other embodiments, referring to fig. 3, fig. 3 is a schematic diagram illustrating connection between a coil 1 and a support 3 according to some embodiments of the present application. The inside of the tubular product of coil 1 has second cavity 1b, and second cavity 1b and runner 1c are not mutually linked, and the lateral wall of second cavity 1b is provided with second screw hole 1d, and support piece 3 is provided with second through-hole 3b, and the brazing device includes second screw 7, and second screw 7 passes second through-hole 3b and second screw hole 1d and stretches into in the second cavity 1 b.

The second cavity 1b and the flow passage 1c are not communicated with each other, which means that the coolant does not flow from the flow passage 1c into the second cavity 1b nor from the second cavity 1b into the flow passage 1c.

The second cavity 1b can provide space for the second screw 7 to fix the coil 1 and the support 3. That is, the second screw 7 only uses the space in the second cavity 1b, and does not occupy the space of the flow channel 1c, thereby reducing the influence of the cooling liquid on the second screw 7, improving the fixing effect of the second screw 7, and further improving the connection strength of the coil 1 and the supporting member 3.

With continued reference to fig. 1-2, in some embodiments, the brazing apparatus includes a plurality of studs 4 and a plurality of nuts 5, wherein one end of a portion of the studs 4 is connected to the coil 1, one end of another portion of the studs 4 is connected to the connecting tube 2, the support member 3 is formed with a plurality of mounting holes 3c, the studs 4 pass through the mounting holes 3c, and the nuts 5 are sleeved on the studs 4 and fasten the support member 3 to the studs 4.

Stud 4 refers to a type of fastener that has no head and is externally threaded at only two ends.

The nut 5 refers to a part that can be screwed together with the stud 4 for tightening.

It will be appreciated that the nut 5 is capable of tightening the support 3 onto the stud 4 by means of external threading on the stud 4.

In this embodiment, by providing the stud 4 on the coil 1 and the connection pipe 2, the mounting hole 3c is provided on the support member 3, and the support member 3 is easy to be assembled and disassembled and replaced for a plurality of times.

The connection mode between the stud 4 and the coil 1 and the connection mode between the stud 4 and the connection pipe 2 are not limited.

The connection mode of the stud 4 and the coil 1 and the connection mode of the stud 4 and the connecting pipe 2 can be welding.

Illustratively, in some embodiments, the stud 4 fixed to the coil 1 is a first stud 41, and the first stud 41 is welded to the coil 1; in other embodiments, the stud 4 fixed on the connecting tube 2 is a second stud 42, and the second stud 42 is welded with the connecting tube 2; in still other embodiments, the stud 4 fixed to the coil 1 is a first stud 41, the first stud 41 is welded to the coil 1, the stud 4 fixed to the connection tube 2 is a second stud 42, and the second stud 42 is welded to the connection tube 2.

It can be appreciated that the first stud 41 is welded with the coil 1, and the second stud 42 is welded with the connection pipe 2, so that the process is simple and the production cost is reduced.

The cross section of the connection pipe 2 in the second direction is illustratively rectangular. In this way, the welding of the second stud 42 on the connection tube 2 is facilitated, and the efficiency is improved.

Illustratively, in some embodiments, the tubing of the coil 1 is provided with first through-holes penetrating the walls of the opposite sides of the tubing, through which the first studs 41 pass; in other embodiments, the connecting tube 2 is provided with a second through hole penetrating the tube wall on opposite sides of the connecting tube 2, through which the second stud 42 passes; in still other embodiments, the tubing of the coil 1 is provided with a first through-hole penetrating the tube wall on opposite sides of the tubing, the first stud 41 penetrating the first through-hole, the connecting tube 2 is provided with a second through-hole penetrating the tube wall on opposite sides of the connecting tube 2, and the second stud 42 penetrating the second through-hole.

It can be understood that the first stud 41 passes through the first through hole to be fixed on the coil 1, so as to improve the connection strength between the first stud 41 and the coil 1, and the second stud 42 passes through the second through hole to be fixed on the connecting pipe 2, so as to improve the connection strength between the second stud 42 and the connecting pipe 2, and further enhance the fixing effect of the support 3 on the coil 1.

Specifically, referring to fig. 1 to 2, in an embodiment, two connection pipes 2 are arranged side by side along a second direction, first ends of the two connection pipes 2 are connected to one end of the coil 1 along the first direction, and second ends of the two connection pipes 2 are formed with a power connection structure 2a for connecting to a power source. The number of windings of the coil 1 is 2, and one of the windings of the coil 1 is provided with a support 3 on opposite sides in the second direction. Two first studs 41 are respectively arranged on two opposite sides of the coil 1 along the second direction, and the two first studs 41 are arranged at intervals along the first direction, wherein the first studs 41 are welded with the coil 1. Each connecting tube 2 is provided with two second studs 42, the two second studs 42 being arranged at intervals along the first direction, wherein the second studs 42 are welded with the connecting tube 2. The plurality of nuts 5 are sleeved on the first stud 41 and the second stud 42 and fasten the support 3 on the first stud 41 and the second stud 42. The inside of the pipe material of the coil 1 is provided with a flow passage 1c, the connecting pipes 2 are provided with cooling passages 2c, the flow passage 1c is communicated with the cooling passages 2c of the two connecting pipes 2, and after the brazing device works, cooling liquid flows into the flow passage 1c through the cooling passages 2c to cool the coil 1. In this embodiment, the support 3 enhances the stability of the coil 1 and reduces deformation of the coil 1 during use.

The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. A brazing apparatus, comprising:

The coils are connected to first ends of the two connecting pipes, and the connecting pipes are provided with power supply connecting structures and are used for connecting power supplies;

2. The brazing device according to claim 1, wherein the coil is formed by winding a tube, and the outer diameter of the connecting tube is larger than the outer diameter of the tube.

3. Brazing device according to claim 1, wherein the coil has a dimension in a first direction that is larger than a dimension in a second direction, wherein the connection pipe is connected to one end of the coil in the first direction, and wherein two connection pipes are arranged side by side in the second direction; the first direction is perpendicular to the second direction.

4. A brazing apparatus according to claim 3, wherein the coil is provided with the support on opposite sides in the second direction.

5. Brazing device according to claim 4, wherein the coil, the two connecting tubes and the two supports are all symmetrically arranged about the same plane.

6. The brazing apparatus according to claim 1, wherein the brazing apparatus comprises a plurality of studs and a plurality of nuts, wherein one end of a part of the studs is connected with the coil, one end of another part of the studs is connected with the connection pipe, the support member is formed with a plurality of mounting holes, the studs pass through the mounting holes, and the nuts are sleeved on the studs and fasten the support member to the studs.

7. The brazing device according to claim 6, wherein the stud fixed to the coil is a first stud welded to the coil; and/or the stud fixed on the connecting pipe is a second stud, and the second stud is welded with the connecting pipe.

8. The brazing device according to claim 6, wherein the stud fixed to the coil is a first stud, the tube of the coil being provided with first through holes penetrating the tube wall on opposite sides of the tube, the first stud passing through the first through holes; and/or the stud fixed on the connecting pipe is a second stud, the connecting pipe is provided with a second through hole, the second through hole penetrates through the pipe walls on two opposite sides of the connecting pipe, and the second stud penetrates through the second through hole.

9. Brazing device according to claim 1, wherein the number of turns of the coil is not more than 3.

10. Brazing apparatus according to claim 1, wherein the tube of the coil has a flow passage inside, the connection tube has cooling channels, and the flow passage communicates the cooling channels of two connection tubes.

11. The brazing apparatus according to claim 10, wherein the connecting tube has a first cavity inside, the first cavity and the cooling passage are not communicated with each other, a side wall of the first cavity is provided with a first screw hole, the support is provided with a first through hole, and the brazing apparatus comprises a first screw penetrating the first through hole and the first screw hole and extending into the first cavity.

12. The brazing device according to claim 10, wherein the tube of the coil has a second cavity inside, the second cavity being not in communication with the flow passage, a side wall of the second cavity being provided with a second threaded hole, the support being provided with a second through hole, the brazing device comprising a second screw passing through the second through hole and the second threaded hole and extending into the second cavity.