KR102001066B1 - Brazing sheet manufacturing method for use in air conditioning or refrigeration system by ultrasonic welding and brazing sheet using of the same - Google Patents

Abstract

Unlike an extruded product having a conventional mechanical structure rod or a prefabricated tank structure, a sheet obtained by ultrasonically fusing a clad to the surface of a substrate using an ultrasonic welding method is manufactured, and the clad is fused only to the joint portion with the component, A method of manufacturing a brazing sheet for an air conditioner by ultrasonic welding which can enhance the completeness of an air-conditioning product which integrally forms a tank member and a header member having high rigidity and durability by performing a brazing process through a process The present invention also relates to a brazing sheet produced by the method, comprising: an aluminum sheet feeding step of supplying an aluminum base material sheet at a constant speed; A clad sheet supplying step of supplying a sheet, The clad sheet supplied through the cladding step is partially melted and adhered to the joint surface of the aluminum base material sheet at an equal interval according to the size of the brazing sheet to be manufactured by fusion welding so that the clad sheet is not separated from the surface of the aluminum base material sheet step; And a brazing sheet forming step of forming a cladding sheet by cooling and rolling the brazing sheet welded to the joint surface of the aluminum base material sheet by fusion bonding through the clad joining step. A method of manufacturing a brazing sheet for an air conditioner is provided.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a brazing sheet for an air conditioner by ultrasonic welding and a brazing sheet produced by the brazing sheet.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a brazing sheet for an air conditioner by ultrasonic welding and a brazing sheet produced by the method and more particularly to a method of manufacturing a brazing sheet using an ultrasonic welding method A clad is fused only to a part where the clad is bonded to the part, and a brazing treatment is performed through an altar or a molding process, so that a tank member having high rigidity and durability and a header member and a brazing sheet produced by the ultrasonic welding. The present invention relates to a method of manufacturing a brazing sheet for an air conditioner by ultrasonic welding capable of enhancing the completeness of an air conditioning product which integrally forms a header member.

Generally, automobiles are equipped with a cooling system that keeps the engine temperature at an appropriate level to prevent malfunctions and to provide the best engine efficiency.

The cooling system may include a radiator, a water pump, a thermostat, a coolant level sensor, a cooling fan, a radiator pressure cap, a water jacket jacket, etc. In most automobiles, water-cooled cooling system using cooling water with antifreeze is adopted.

Particularly, the radiator is a cooling device that cools the cooling water heated by the operation of the engine through contact with air. The radiator is a structure that facilitates heat conduction. The cooling fan is installed on the rear side of the radiator. It is installed in the front part of the engine room of the vehicle and is cooled by the wind which flows into the vehicle during running, Lt; RTI ID = 0.0 > air < / RTI >

The radiator has a 'down flow type' in which a tank is installed above and below the radiator core so that the cooling water flows from the top to the bottom according to the flow direction of the cooling water, and a tank is installed on both the left and right sides of the radiator core. There is a 'cross flow type'.

The structure of the radiator according to the related art is composed of an upper tank, a radiator core, and a lower tank.

Here, a water inlet for connecting the overflow tube and the radiator cap, a cooling water inlet pipe for the upper hose, and various mounts are formed and arranged in the upper tank. A cooling water outlet pipe for a lower hose and a drain cock for discharging cooling water are formed in the lower tank and an oil cooler connected to the oil cooler hose for cooling the transmission oil may be further provided for the automatic transmission vehicle.

The radiator core is disposed and coupled between the upper tank and the lower tank. That is, the radiator core includes a plurality of heat radiating tubes, which are arranged in a plurality of rows and which are disposed between the upper and lower tanks in the vertical direction or the left-to-right direction so as to allow cooling water to flow therethrough, And a cooling fin interposed between the heat-radiating tubes.

For example, the radiator core may be classified into a plate fin type in which flat cooling pins are arranged at regular intervals and a corrugated fin type in which cooling fins are formed in a wave shape between the radiating tubes corrugated fin type ', and' ribbon cellular type ', which forms a tube into a honeycomb shape.

The upper tank or the like includes a plastic tank portion formed of a predetermined synthetic resin; A header portion made of a metal or a non-ferrous metal alloy through which the heat dissipation tube is connected; A rubber type o-ring or gasket interposed between the tank portion and the header portion to maintain watertightness; An assembly assembled with a fixture for bonding the tank portion and the header portion to each other. The fasteners may be formed in the header portion or may be tied together as a securing clip.

Particularly, the header portion is very sensitive to the squareness tolerance, the straightness tolerance, the outline tolerance of the surface, the tolerance of the parallelism, and the like, and forms a plurality of tube connection holes. Then, a plurality of heat radiation tubes are inserted into the tube connection holes It is where it is bound by the next brazing.

Since the header portion is a part requiring precise hole drilling of the tube connection hole corresponding to the brazing process, it is difficult to form or manufacture the header portion and the tank portion integrally.

On the other hand, the radiator having a plastic tank portion according to the prior art is made of different materials and is required to be separated, so that it is difficult to recycle. Because of the manufacturing process such as assembling and caulking each of the upper and lower tanks, It has a disadvantage in that it is very low in production and productivity, is complicated in the assembling process, and is expensive.

In addition, the conventional radiator having a tank portion of a plastic material has a drawback that the coupling structure between the header portion and the tank portion is very weak.

Further, the tank portion of the plastic material according to the prior art is manufactured by injection molding, and has a disadvantage in that the lifetime is relatively short due to the characteristics of the plastic. For example, even if the automobile antifreeze which can be used permanently is developed and mass produced, if the radiator genuine article is changed about 2 times for 200 years of use for 10 years, that is, when the new radiator is run at the time of shipment, 3 radiators are used , It can be seen that the average lifetime of existing conventional radiators is only about five years.

As described in Korean Patent Laid-Open Publication No. 77366 and Korean Patent Laid-Open No. 307 of 2001, the aluminum radiator tank has a header member and a tank portion and the brackets of the lower left and right ends of the tank are inserted into the inserting portions of the tank portion of the header and then brazed so as to improve the joining strength with the member of the tank and the brazing performance of the skirt portion and the header skirt, .

However, the above-described prior art technologies still have complexity in manufacturing and manufacturing processes in which the tank portion and the header portion must be assembled, as in the case of the conventional plastic radiator tank described above.

That is, the above-described patented technologies can replace the conventional plastic tank with an aluminum material to increase the binding force and the rigidity by the characteristics of the aluminum alloy itself. However, the quality of the tie between the tank and the header affects the quality of the entire radiator And the thickness of the tank portion and the header portion can not be made relatively thick in order to secure the mutual bonding force, which is disadvantageous in manufacturing cost increase.

In addition, the above-mentioned prior art techniques are also applied to the press method for the use of the clad aluminum alloy material, or even if the U-shaped tank part is formed by the roll forming method, A curling portion is formed at the lower left and right sides of the tank portion, and then the tube portion and the header portion are assembled with the header portion. Therefore, the hollow body shape is formed by assembling the tank portion and the header portion. Thus, durability is weakened, product life is shortened, It has a disadvantage that it is relatively lower than that of the integral steel pipe product.

1. Korean Patent No. 10-0865119 (entitled "Brazing Composition for Aluminum Air-Conditioning Machine and Brazing Method") 2. Korean Patent No. 10-0773339 (entitled Clad Tank for HVAC Components and Method of Manufacturing the Same)

The object of the present invention is to solve the problems of the prior art as described above, and it is an object of the present invention to provide an integrated brazed sheet structure by ultrasonic welding, in which a clad sheet has a uniform thickness and distribution To provide parts for an air conditioner machine having excellent structural rigidity and durability by a brazing method in manufacturing components of an air conditioner for forming a brazing sheet by ultrasonic welding.

It is another object of the present invention to provide a method of manufacturing a brazing sheet by ultrasonic welding which is excellent in accuracy of forming a plate or a pipe for molding a brazing sheet into a part of an air conditioner and is easy to manufacture and has a high productivity and yield And to provide a method of manufacturing a brazing sheet for an air conditioner by ultrasonic welding capable of performing a brazing process of precise air-conditioning equipment parts.

A clad sheet feeding step of supplying a clad sheet to both upper and lower surfaces of an aluminum base material sheet fed through the aluminum sheet feeding step, And the clad sheet supplied through the clad sheet feeding step is partially melted and bonded to the bonding surface of the aluminum base material sheet at equal intervals according to the size of the brazing sheet to be manufactured, A clad joining step of not separating; And a brazing sheet forming step of forming a cladding sheet by cooling and rolling the brazing sheet welded to the joint surface of the aluminum base material sheet by fusion bonding through the clad joining step. A method of manufacturing a brazing sheet for an air conditioner is provided.

The present invention also provides a method of manufacturing a brazing sheet for an air conditioner by ultrasonic welding, wherein the fusion bonding means of the clad sheet fused to the bonding surface of the clad bonding step comprises ultrasonic bonding means.

According to another aspect of the present invention, there is provided a method of manufacturing a brazing sheet for an air conditioner by ultrasonic welding, wherein the ultrasonic bonding means comprises an ultrasonic cushioning material for buffering ultrasonic waves on an outer surface of one or more surfaces of the joint surface.

On the other hand, in the ultrasonic bonding means, ultrasound energy is applied so that the clad sheet is melted in a thickness of 40 to 80% of the entire thickness by a frequency of 20 to 50 KHz, and the ultrasonic welding is performed on the brazing sheet for an air conditioner And a manufacturing method thereof.

The ultrasonic bonding means has an amplitude for compressing the clad sheet to a thickness of 10 to 50% at a frequency of 20 to 50 KHz. The ultrasonic bonding method comprises the steps of:

Since the aluminum base material sheet and the clad sheet-integrated brazing sheet of the present invention have a structure integrally formed by the ultrasonic welding of the present invention, the product life and the durability are much better than the pressed products and the assembled products.

Further, since the brazing sheet of the present invention has a uniform distribution and a bonding thickness of the clad sheet on the bonding surface of the aluminum base material sheet, it is possible to form a plurality of tube connection holes in an airtight manner by precise drilling, Is inserted and fused in the tube connection hole in the brazing process, a sufficient amount of the clad sheet can be uniformly and precisely fed to the tube side, thereby maximizing the quality of the brazing.

In addition, when the air conditioning equipment is manufactured by the brazing sheet of the present invention by the joining process, productivity can be improved by manufacturing facilities arranged according to the flow production method for each process.

Further, by molding the component by the uniform distribution of the clad sheet of the brazing sheet of the present invention, it is possible to mass produce the parts of the air conditioner having high precision and high quality and good hardness difference of the joint portion corresponding to the welded portion and non- welded portion There are advantages to be able to.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. Further, it is obvious that various modifications and variations can be made without departing from the scope of the technical idea of the present invention by anyone having ordinary skill in the art.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front schematic view showing a method of manufacturing a brazing sheet for an air conditioner by ultrasonic welding according to the present invention; FIG.
2 is a schematic plan view showing a method of manufacturing a brazing sheet for an air conditioner by ultrasonic welding according to the present invention.
Fig. 3 is a plan view (a) and a front view (b) of a brazing sheet manufactured by the method for producing a brazing sheet for an air conditioner by ultrasonic welding according to the present invention.
FIG. 4 is a structural view (a) of a molding die and a combined perspective view (b) of a forming part and a compression roller in a method of manufacturing a brazing sheet for an air conditioner by ultrasonic welding according to the present invention.
FIG. 5 is a plan view (a) (b) of a method of manufacturing a brazing sheet for an air conditioner by ultrasonic welding according to the present invention, in which a knife net is expressed on a compression roller of a molding die in a compression molding step.
6 is a process diagram showing a method of manufacturing a brazing sheet for an air conditioner by ultrasonic welding according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, like reference numerals refer to like elements throughout. The same reference numerals in the drawings denote like elements throughout the drawings.

Generally, a heat exchanger used as an air conditioner in an automobile includes a header tank on both sides, a plurality of tubes connecting between the header tanks on both sides, and a cooling fin installed between the tubes. In the header tank, (Water, coolant) flowing through the heat exchanger (not shown) is introduced and discharged through the bracket.

Although the brazing sheet 300 produced by the ultrasonic welding of the present invention is intended to be used for the cooling fin of the heat exchanger described above, the present invention is not limited to the brazing sheet 300 applied to the cooling fin, 300) to be used in brackets, header tanks or tubes in addition to the cooling fins of the heat exchanger.

As shown in FIGS. 3A and 3B, the brazing sheet 300 for an air conditioner manufactured by the ultrasonic welding and the flow production method in the brazing sheet for an air conditioner by ultrasonic welding has the above- The cladding sheet 200 of the object is coated on the surface of the aluminum base material sheet 100 by the ultrasonic welding to form the brazing sheet 300. In the case of forming the aluminum material base sheet 100, The brazing sheet for an air conditioner according to the present invention is characterized in that the cladding sheet (200) is a brazing sheet (300) coated by ultrasonic welding.

1 and 2, an aluminum sheet feeding step (S10) for feeding the aluminum base material sheet 100 at a constant speed is performed in a method of manufacturing a brazing sheet for an air conditioner by ultrasonic welding, A clad sheet feeding step (S20) of supplying a clad sheet (200) to the upper, lower, or both upper and lower surfaces of the aluminum base material sheet (100) supplied through the aluminum sheet feeding step (S10); And the clad sheet 200 supplied through the clad sheet feeding step S20 is fused to the bonding surface 110 of the aluminum base material sheet 100 at equal intervals according to the size of the brazing sheet 300 to be manufactured. (S30) for preventing the clad sheet (200) from being separated from the surface of the aluminum base material sheet (100) by partially melting and adhering the clad sheet (200) by the adhesive layer (400). The clad sheet 200 is formed by cooling and rolling the brazing sheet 300 welded to the bonding surface 110 of the aluminum base material sheet 100 through the bonding step S30 And a brazing sheet forming step (S40) of forming a brazing sheet by ultrasonic welding.

The brazing sheet 300 of the present invention is characterized in that the clad sheet 200 which is a brazing material composed of an aluminum alloy containing Si and Zn is bonded to only the bonding surface 110 formed on the surface of the base material sheet 100 made of an aluminum alloy by ultrasonic welding The brazing sheet 300 may be used for a fin member of an air conditioner or a header pipe and a tube portion of a condenser of an air conditioner, and may be applied to a bracket, a receiver, a cap, and a flange of another condenser.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of a brazing sheet manufactured by a method of manufacturing a brazing sheet for an air conditioner by ultrasonic welding according to the present invention and a method of manufacturing the same will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1, 2 and 6, in the aluminum sheet feeding step S10 and the clad sheet feeding step S20, the aluminum base material sheet 100 and the clad sheet 200 are fed in the form of rolls And the aluminum base material sheet 100 and the clad sheet 200 are rolled into a cylindrical rod shape so that the aluminum base material sheet 100 and the clad sheet 200 are wrapped around the outside of the shaft in a cylindrical shape So that the abutting surfaces of both sides are joined by the fusing unit 400 described later.

A bonding surface 110 is formed on the aluminum base material sheet 100 such that the clad sheet 200 is partially or completely fused to the top, bottom or both the top and bottom surfaces of the aluminum base material sheet 100, The clad sheet 200 is formed on the aluminum base material sheet 100 corresponding to the width and the length of the clad sheet 200. That is, do.

As shown in FIGS. 1, 2 and 6, the fusion bonding means of the clad sheet 200, which is fused to the bonding face 110 of the clad bonding step S30 in the clad bonding step S30, And the clad sheet 200 is fused to the bonding surface 110 of the aluminum base material sheet 100 by ultrasonic waves by the fusion bonding work 400 as the fusion bonding means.

1 and 2, the fusing unit 400 emits ultrasound waves to the clad sheet 200 so that the clad sheet 200 is bonded to the bonding surface of the aluminum base material sheet 100, And is connected to the end of the shaft 420 to rotate and rotate the shaft 420. The horizontal shaft 420 is connected to the driving motor 430 horizontally and transmits power, And a horn 430 for generating ultrasonic waves while being rotated. The clad sheet 200 is subjected to fusion bonding in a state where the outer circumferential surface of the horn 430 is in contact with the clad sheet 200 while being rotated on the fused surface of the clad sheet 200, The clad sheet 200 and the aluminum base material sheet 100 are horizontally moved in the same moving direction as the rotation direction of the driving motor 410. When the operation of the driving motor 410 is stopped, And the welding process is stopped at the same time.

The horn 430 constituting the fusing unit 400 generally has a structure in which ultrasonic welding is performed by converting an electrical oscillation made through an oscillator from a ultrasonic transducer to a mechanical oscillation and amplifying vibration through a booster and a tool horn, Refers to a welding method in which mechanical energy is transmitted and frictional heat generated on an adhesive surface by ultrasonic vibration of an object to be welded softens and melts the adhesive surface and thereby fusion is performed. The clad sheet 200 is fused and fused to the bonding surface 110 of the aluminum base material sheet 100 by softening and melting the clad sheet 200 on the bonding surface 110 formed on the upper surface of the base material sheet 100, The aluminum alloy material sheet 100 and the clad sheet 200 are rotated at the same speed and direction as the moving speed of the aluminum base material sheet 100 and the clad sheet 200 The horn 430 may be provided on both sides of the upper surface of the aluminum base material sheet 100 if the bonding surface 110 is formed on both sides of the upper surface of the aluminum base material sheet 100, The horn 430 rotates with respect to the central axis 420 and the driving motor 410 is connected to the shaft 420 at one end to rotate the horn 430. [ .

The fusing work 400 may be provided in the form of a plate-like horn that is vertically movable instead of the roller-type horn 410 formed by the rotation of the driving motor 430.

The aluminum base material sheet 100 is bonded to the lower surface of the aluminum base material sheet 100 to support the aluminum base material sheet 100 while rotating at the same speed and direction as the moving speed of the aluminum base material sheet 100 and the clad sheet 200, The aluminum mother material sheet 100 and the clad sheet 200 are moved in the same speed and direction as the moving speed of the aluminum base material sheet 100 and the clad sheet 200, 200, the clad sheet 200 is bonded to the bonding surface 110 formed on the upper surface of the aluminum base material sheet 100 at the time of the fusing process so that the clad sheet 200 is welded while being bonded.

1, the die 440 supports the lower surface of the aluminum base material sheet 100 and the clad sheet 200 to perform a smooth fusion process, and at the same time, the horn 430 of the fusion welding part 400, The aluminum base material sheet 100 and the clad sheet 200 which are closely contacted with each other and the die 440 are moved to a predetermined position without being separated from each other. The aluminum base material sheet 100 is formed of a drum, The aluminum base material sheet 100 is placed on the lower side supporting the aluminum base material sheet 100 and spaced apart from the lower side of the horn 430 so that a space between the horn 430 of the fusion bonding material 400 and the die 440 The outer circumferential surface of the horn 430 of the fusion bonding work 400 is bonded to the bonding surface 110 on the upper surface of the aluminum base material sheet 100 and the cladding sheet 200 The upper surface of the clad sheet 200, And the die 440 supports the entire lower surface of the aluminum base material sheet 100 and the lower surface of the clad sheet 200 to prevent the force of the aluminum base material sheet 100 and the clad sheet 200 being conveyed, The aluminum base material sheet 100 and the clad sheet 200 are adhered to each other by the rotating driving force of the die 440 and the clad sheet 200 is bonded to the bonding surface 110 of the aluminum base material sheet 100 by the ultrasonic welding generated by the horn 430, The sheet 200 is subjected to fusion bonding.

As shown in FIGS. 1 and 6, when brazing is performed while supplementing the external handicap due to the adhesion mark of the fused portion on the outer side of the brazing sheet 300 after the fusing process is completed, Further comprising a compression molding step (S30-1) of molding a surface of the clad sheet (200) with a molding die (500) having one or more compression rollers coupled to perform additional extrusion processing to increase the bonding efficiency, 1 and 4, the molding die 500 includes a compression roller 510 corresponding to the upper surface of the clad sheet 200 fused to the joint surface 110 of the aluminum base material sheet 100, The support roller 520 is disposed to face the entire lower surface of the aluminum base material sheet 100 corresponding to the position of the roller 510. The compression roller 510 is driven by a driving motor 501 ) Operation To have a structure in which the rotation of the compression roller (510).

The supporting portion 520 may have a horizontal plate shape or a roller shape and the height of the supporting portion 520 may be adjusted so that the interval between the supporting portion 520 and the outer peripheral surface of the pressing roller 510 can be adjusted. So that it can be adjusted.

5 (a), a knife net 540 is formed on the outer circumferential surface of the compression roller 510 or the outer circumferential surface of the cylindrical forming part 530 detachably attached to the outer circumferential surface of the compression roller 510, The knife net 540 is subjected to the contact compression on the upper surface of the clad sheet 200 which is in contact with the compression roller 510 and the net shape corresponding to the blade net 540 is formed on the upper surface of the clad sheet 200 as a clad sheet 200).

The knife blade 540 may have a triangular cross section, and the blade may have a height (thickness) smaller than the thickness of the clad sheet 200.

The surface of the clad sheet 200 is formed with a net-like net so that the clad sheet 200 is uniformly melted and distributed on the surface bonded to the clad sheet 200 fused to the brazing sheet 300 during the brazing process. The clad sheet 200 is formed on the surface of the clad sheet 200 as a net (not shown), and the recessed blade forming the net (not shown) The groove (not shown) is formed in a " V " shape so that the clad sheet 200 is melted during the brazing process so that the melting temperature is concentrated in the groove of the blade, The melt of the melt 200 is uniformly distributed and the surface bonded to the clad sheet 200 has a rigid bonding structure.

As shown in FIG. 5B, a plurality of circumferential blade nails 540 may be spaced apart from the outer circumferential surface of the compression roller 510, or may be detachably attached to the outer circumferential surface of the compression roller 510, And a plurality of cylindrical forming portions 530 formed with a plurality of cutting edges 540 may be spaced apart from each other.

At this time, a plurality of meshes with blade grooves (not shown) are formed on the surface of the clad sheet 200 formed by the compression roller 510 so as to be spaced apart from each other in the longitudinal direction of the clad sheet 200, 200, the surface of the net between the net and the net and the netting solve the following functions.

That is, the problem that the fatigue is concentrated on the joint portion due to the heat deformation caused by the fluid movement of the heat exchanger manufactured after the brazing process is applied to the surface of the brazing sheet 300 bonded to the clad sheet 200, There is a difference in the crystal and distribution during the melting process of the part, and there is a difference in the hardness strain rate which is deformed compared to the unit interview at the mutual joining part, so that the fatigue is relieved by the mutual thermal deformation.

The ultrasonic joining means through the horn 430 provided in the fusion welding part 400 is designed to melt the ultrasonic wave at a frequency of 20 to 50 KHz to melt the entirety of the clad sheet 200 in the bonding surface 110 in a thickness of 40 to 80% Energy is applied and the clad sheet 200 is compressed to a thickness of 10 to 50%. The preferable frequency is 20 to 50 KHz, and if the frequency is 20 KHz or less, the productivity is low due to the slow production rate, and if the frequency is 50 KHz or more, the clad sheet 200 is melted excessively, resulting in poor bonding.

The horn 430 of the fusing unit 400 is not shown but may be formed in the shape of a cylindrical drum and provided on the upper surface of the bonding surface and may include a receiving unit on the outer circumferential surface and an ultrasonic header provided in the receiving unit. have.

The outer surface of the die 440 of the fusing unit 400 absorbs a portion of the ultrasonic waves applied by the ultrasonic headers to prevent excessive ultrasonic waves from being applied to the bonding surfaces and to secure a constant amplitude for ultrasonic vibration. A buffer (not shown) may be provided.

The ultrasonic cushioning unit (not shown) is formed of any one of a urethane support pad made of urethane material and a Teflon support pad made of Teflon, a wooden support pad made of wood, and a paper support pad made of paper on the outer peripheral surface of the die 440.

As shown in FIGS. 1, 2 and 6, in the brazing sheet forming step S40, the brazing sheet produced in the clad joining step S30 or the compression molding step S30-1 is cooled and rolled The brazing sheet 300 for forming the components of the heat exchanger, which is an air conditioner, is manufactured.

After the brazing sheet 300 is bonded to the bonding surface 110 of the aluminum base material sheet 100 by ultrasonic welding, the brazing sheet 300 is formed and formed into parts of the air conditioner through the pipe or altar. After the machining process, the brazing process is performed.

In the brazing process, the parts are brazed in a brazing furnace under an inert atmosphere, such as nitrogen atmosphere, at temperatures ranging from 300 ° C to 640 ° C.

As described above, the aluminum base material sheet 100 in which the clad coating layer is not formed and the clad sheet is not attached, and the brazing sheet 300 integrated with the clad sheet 200 are used to form the cooling fin, the bracket, the header pipe, The brazing sheet according to the present invention can be brazed to each other to seal each other, thereby reliably preventing the refrigerant flowing inside the brazing sheet from leaking.

The joining of the header pipe and the tube is not limited to the condenser in the aluminum air-conditioning equipment, and can be used for joining the parts to be applied to the aluminum air-conditioning equipment including the oil cooler and the like.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. Will be clear to those who have knowledge of.

Aluminum base material sheet 100 Joint surface 110 Clad sheet 200
Blade groove 201 Brazing sheet 300 Fusing step 400
Horn 410 Axis 420 Driving Motor 430
Die 440 molding die 500 compression roller 510
Supporting part 520 Molding part 530 Knife blade 540

Claims (9)

delete delete delete delete delete delete delete A method of manufacturing a brazing sheet for an air conditioner by ultrasonic welding,
An aluminum sheet feeding step of feeding the aluminum base material sheet at a constant speed,
A clad sheet feeding step of supplying a clad sheet to the upper, lower, or both upper and lower surfaces of the aluminum base material sheet supplied through the aluminum sheet feeding step;
The clad sheet supplied through the clad sheet supplying step is horizontally connected to the driving motor and the driving motor on the joint surface of the aluminum base material sheet at equal intervals according to the size of the brazing sheet to be manufactured, And a cylindrical horn which is connected to an end of the shaft and rotated simultaneously with the rotation of the shaft to form a receiving portion of the outer circumferential surface and an ultrasonic head provided in the receiving portion to generate ultrasonic waves, Ultrasonic wave energy is applied so that the entire thickness of the clad sheet is melted to 40 to 80% by the frequency of 20 to 50 KHz by the ultrasonic bonding means through the horn, and the clad sheet To an amplitude of 10 to 50% And a die rotatable in the same speed and direction as the moving speed of the aluminum base material sheet and the clad sheet while being held on the lower surface of the aluminum base material sheet to support the aluminum base material sheet, And the ultrasonic vibration is absorbed by the outer surface of the die of the fusion welding so that excessive ultrasonic waves are prevented from being applied to the bonding surface, A clad joining step including an ultrasonic cushioning part for securing a constant amplitude for the ultrasonic wave,
A cladding layer formed on the bonding surface of the aluminum base material sheet so as to perform an additional extrusion forming process in order to increase the bonding efficiency when the brazing is performed while complementing the apparent handicap due to the adhesion mark of the fusion bonding site on the outer side of the brazing sheet after the clad- And a molding die composed of at least one compression roller corresponding to the upper surface of the sheet and a supporting portion for inspecting the entire lower surface of the aluminum base material sheet corresponding to the position of the compression roller to form the surface of the clad sheet, A plurality of circumferential blade nails having a triangular cross section may be spaced apart or may be detachably attached to the outer circumferential surface of the pressing roller and a plurality of cylindrical forming portions having a blade net having a triangular cross section may be spaced apart, Of the clad sheet to be adhered to the roller Forming a net shape corresponding to a blade net or a forming portion on the upper surface of the clad sheet while the blade net is subjected to an in-situ compression on the side of the blade, and the concave blade groove forming the net is formed into a " V &; And
And a brazing sheet forming step of forming a clad sheet by cooling and rolling the clad sheet by fusing and welding the joint surface of the aluminum base material sheet through the compression molding step. (EN) METHOD FOR MANUFACTURING BRAZING SHEET. delete

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