KR20060055118A - Manufacturing apparatus for heat pipe and manufacturing method therefor - Google Patents

Abstract

The present invention discloses a welding unit for primary seam resistance welding by overlapping both ends of a conveyed pipe, and a driving unit for bonding the pipe and the stopper by welding to seal the pipe by moving the welding unit up and down. And a cooling unit for cooling the heat generated by the primary seam resistance welding.

The heat pipe manufacturing apparatus and its manufacturing method, using a seam welding machine that can be welded at a relatively low temperature, by maintaining the characteristics of the raw material by adding the cooling water, and the oxidation of the pipe material, physical property softening and fine cracks By preventing the occurrence of the heat pipe provides the effect of extending the life.

Heat Pipe, Head, Water Pipe, Thermal Efficiency, Boiler, Packing, Coolant

Description

Manufacturing pipe and manufacturing method therefor {Manufacturing Apparatus for Heat Pipe and Manufacturing Method therefor}

1 is a schematic side view showing a preferred embodiment of a heat pipe manufacturing apparatus according to the present invention.

FIG. 2 is a side cross-sectional view showing one end of a heat pipe in which a primary seam resistance welding of a heat pipe made by the heat pipe manufacturing apparatus shown in FIG. 1 is performed.

3 is a side cross-sectional view illustrating one end of a heat pipe in which a flange rolling operation is secondly performed in a heat pipe in which seam resistance welding shown in FIG. 2 is performed.

<Brief description of the main symbols in the drawings>

100: heat pipe 110: cap

120: welded area 130: pipe end

200: welding unit 210: chromium copper phase electrode

220: nut 230: chromium copper lower electrode

240: lower electrode rotation axis 300: drive unit

310: air cylinder 320: phase electrode rotation axis

330: piston 400: rotary drive unit

410: drive motor 420: gearbox

500: cooling unit 510: cooling water tank

520: cooling water supply pump 530: cooling water pipe

540: control unit

The present invention relates to a method for manufacturing a heat pipe and a manufacturing apparatus thereof, and more particularly, to a heat pipe manufactured by using a seam welder that can be welded at a lower temperature than argon welding, and maintaining a property of raw materials by adding cooling water. It relates to a method and a manufacturing apparatus thereof.

In general, heat pipes, also called heat pipes, were manufactured by General Motors of the United States in 1942 for heat dissipation of spacecraft.

This is a pipe exhausted from the inside with a heat medium inside a large hole, and when heat is applied to one end of the pipe, the liquid evaporates and moves to the other end with thermal energy. Heat dissipates at the end, passes through the inside, and returns to its original position.

Copper, stainless steel, ceramics, tungsten, etc. are used for the material of the said pipe, and a porous fiber etc. are used for the inner wall.

These heat pipes have a higher heat transfer capacity than the ordinary metal pipe, have the same surface temperature of the entire heat pipe, have a simple physical structure, light weight, require little maintenance, and have a separate heat transfer. It is widely used because it requires no energy.

Conventionally, in the manufacture of heat pipes, a cap is fitted and welded at one end of the pipe, and another cap having a fluid inlet is welded at the other end, and a working fluid is injected into the inside through the inlet, and a sealing screw is tightened under vacuum. And welding is completed again.

However, the heat pipe manufactured by the conventional method not only damages the pipe life due to oxidation during the welding process of the cap, but also the physical properties of the material in the process of expansion and contraction caused by welding heat during welding. As a result of the deformation and the microscopic cracking which is not visible to the naked eye, the injected working fluid is gradually lost through the cracks, resulting in damage to the life of the heat pipe. As a result, there is a disadvantage in that reliability is lost from consumers due to a decrease in lifespan, an increase in defect rate, and an increase in cost.

1 shows a heat pipe manufacturing apparatus according to the prior art, which has been disclosed in Korean Utility Model Model No. 215782.

Referring to the drawings, a heat pipe manufacturing apparatus comprising a vacuum chamber for inserting a heat pipe to be hermetically fixed, comprising a vacuum pump for vacuuming the vacuum chamber, and a heat medium injection device for injecting a heat medium into the fixed heat pipe, It has a support groove for supporting one end of the pipe inserted and fixed inside the heat pipe manufacturing apparatus, on the opposite side is provided with a pressurized shaft airtightly penetrated toward the support groove, the end of the press shaft is supported by the end of the pipe A press head for pressing against the groove is provided, and a pressure cylinder for operating the press shaft is installed at the side of the heat pipe manufacturing apparatus.

In this structure, when the heat pipe is evacuated and the heat medium is injected, and then the inlet is sealed, the end of the pipe is pressed and pressed to seal it, so that it can be sealed quickly and easily. Therefore, there is an effect that can maintain a more good and sure sealing state for a long time.

Conventionally, when manufacturing a heat pipe, a cap is attached to both ends of the pipe and argon welding, a working fluid is injected, sealed and fastened, and finally argon welding is performed.

However, in this manufacturing method, oxidation of SUS304, which is a raw material of the pipe, occurs during the argon welding of the main pipe and the cap, and the components of the material are changed and cured in the process of expansion and contraction caused by the heat of welding. In addition to shortening the lifespan of the heat pipe, the working fluid injected into the pipe is often lost through cracks.

Therefore, the present invention is to preserve the material of the heat pipe as it is, to produce a better product in large quantities to ensure the price and quality that can satisfy the consumer by using a dedicated equipment for permanently preserving the life of the pipe, the product defect rate When minimizing resistance seam welding, coolant is added to keep the material of SUS304 intact.

SUMMARY OF THE INVENTION The present invention has been made in view of the above necessity, and provides a method for manufacturing a heat pipe and an apparatus for manufacturing the same, by using a seam welder that can be welded at a relatively low temperature, and maintaining the properties of raw materials by adding cooling water. Its purpose is to.

In addition, another object of the present invention, by welding the heat pipe using low temperature welding and cooling water, the heat pipe which can prevent the oxidation of the pipe material, the softening of the properties and the occurrence of minute cracks, and can extend the life of the heat pipe It is to provide a method of manufacturing and an apparatus for manufacturing the same.

In addition, another object of the present invention is to provide a method and apparatus for manufacturing a heat pipe that can increase productivity and lower manufacturing costs by dramatically lowering a defective rate by using low temperature welding and cooling water.

The present invention for achieving the above object, the welding unit for the primary seam resistance welding overlapping the both ends of the conveyed pipe, and welding the pipe and the cap to move the welding unit up and down to seal the pipe And a cooling unit for cooling heat generated in the primary seam resistance welding.

In addition, in the heat pipe manufactured by joining and sealing both ends of a pipe by welding, seam resistance welding is performed by using a seam resistance welding machine, and at the same time the seam resistance welding is performed. It relates to a heat pipe manufacturing method characterized by cooling the heat generated in the welding.

At this time, it is preferable to finish by flange rolling to reinforce and seal the pipe after the seam resistance welding is completed.

Hereinafter, a preferred embodiment of a heat pipe manufacturing apparatus according to the present invention with reference to the drawings.

A simplified side view of the heat pipe manufacturing apparatus according to the present invention is shown in FIG.

Referring to the drawings, the cap unit 110 is coupled to both ends 130 of the pipe 100, and then the welding unit 200 performs seam resistance welding, and the pipe 100 and the cap 110. And the heat generated in the primary seam resistance welding and the drive unit 300 for moving the welding unit 200 up and down to seal both ends 130 of the pipe 100 by welding by welding. It shows a heat pipe manufacturing apparatus having a cooling unit 500 for cooling the.

In this case, the flange rolling operation is performed by a flange rolling device (not shown) for reinforcing and sealing the both ends 130 of the pipe 100 subjected to the seam resistance welding, thereby improving the appearance. Rather, it reinforces the junction between the cap 110 and the pipe 100 to reinforce the airtightness.

It does not adopt the conventional welding method, and keeps the ingredients of SUS304 as raw materials, minimizes the defect rate, provides a large amount of production effect, and can provide a low-cost and high-quality product so that consumers can use it casually. .

Hereinafter, each unit of the heat pipe manufacturing apparatus will be described in detail.

First, the welding unit 200 includes a chromium copper (Cu-Cr) upper electrode 210, a chromium copper lower electrode 230 corresponding to the upper electrode, and the chromium copper upper electrode ( A current supply unit (not shown) for generating an arc is provided at the 210 and the lower electrode 230.

The chromium copper is a precipitation hardening alloy containing about 0.5% to 1% of chromium (Cr) in copper (Cu), and has excellent electrical conductivity, high hardness, and excellent wear resistance.

By supplying electricity to the upper electrode 210 and the lower electrode 230 made of chromium copper, the pipe to be plated by the arc heat generated therebetween, and at the same time to plate the positive electrode (210, 230) ( Since the pressure is brought into close contact with the 100 and the cap 110, the welding state is not only airtight, but also welding is possible at a relatively low temperature than the conventional welding using argon (Ar).

Of course, a power supply unit for supplying current for seam resistance welding is connected to the chromium copper upper electrode 210 and the lower electrode 230 to generate arc heat, and the chromium copper upper electrode 210 is rotated ( A nut 220 is provided as a fastening means secured to the 320.

In addition, it looks at the drive unit 300.

The driving unit 300 is coupled to the air cylinder 310 for vertical movement of the chromium copper upper electrode 210 and the chromium copper upper electrode 210 and reciprocates in the air cylinder 310. By driving the chromium copper upper electrode 210 in contact with the pipe 100, a piston 330 for welding seam resistance, and a driving motor for generating a driving force for the reciprocating motion of the piston 330 (not shown) It is provided.

The piston 330 in the air cylinder 310 moves up and down by the driving force of the drive motor to press the chromium copper upper electrode 210 in close contact with the pipe 100 and to perform welding.

At this time, the air supply device (not shown) for generating a pneumatic pressure so that the piston 330 in the air cylinder 310 can move up and down, and supply the pneumatic pressure to the air cylinder 310 is the air cylinder 310 It is apparent that a control unit (not shown) coupled to the control unit (not shown) and a valve (not shown) controlled by the control unit (not shown) are provided to the air cylinder 310.

In addition, it looks at the rotation drive unit 400.

The rotation driving unit 400 is coupled to the driving motor 410 and the driving motor 410 to generate a driving force for rotating the chromium copper upper electrode 210 and the lower electrode 230, and rotates, Rotating shafts 240 and 320 to which the chromium copper upper electrode 210 and the lower electrode 230 are coupled to one end thereof, and the other ends of the rotating shafts 240 and 320 to control the speed of the driving motor 410, respectively. It is provided with a gear box 420 is coupled to the drive box, the drive motor 410 is connected to the gear box 420 to supply a driving force and the control unit 540 for controlling it.

Therefore, the speed is controlled by the gearbox 420 for adjusting the rotation speed of the rotation shafts 320 and 240 according to the rotation of the drive motor 410, and the rotation shafts 320 and 240 rotate, and the rotation shaft 320 The lower and upper chromium copper 230 and the upper electrode 210 coupled to one end of the 240 is rotated by the respective rotation shafts 320 and 240, thereby the pipe 100 and the cap by the welding unit 200. The welding surface of the 110 is rotated.

That is, the pipe 100 rotates according to the rotation of the rotating shaft 240 of the chromium copper lower electrode 230, and the chromium copper upper electrode 210 is heated by the air cylinder 310. Resistance welding is performed while applying pressure to the surface of (100).

In addition, it looks at the cooling unit 500.

The cooling unit 500, the cooling water tank 510 for storing the cooling water to supply the cooling water to cool the heat generated by the welding unit 200, and the cooling water stored in the cooling water tank 510 Cooling water supply pump 520 for generating power to supply a portion to the welded portion, a cooling water pipe 530 is coupled to the cooling water tank 510 to supply the cooling water directly to the welding unit 200, and the welding It characterized in that it comprises a control unit 540 for controlling the supply of cooling water to the unit 200.

The coolant filled in the coolant tank 510 is introduced into the welded portion by the operation of the coolant supply pump 520 to cool the heat generated during the welding process.

That is, the coolant is supplied from the coolant tank 510 to a portion to be welded through the coolant pipe 530, and when the welding is completed, the driving of the coolant supply pump 520 is stopped by the controller 540 to supply the coolant. Will be over.

The present invention also relates to a heat pipe manufacturing method, and looks at a manufacturing method for manufacturing a heat pipe using the heat pipe manufacturing apparatus according to the above configuration.

2 is a cross-sectional view showing a state of the pipe in which the seam resistance welding is completed.

Referring to the drawings, in the heat pipe manufactured by joining and sealing the cap 110 to the both ends 130 of the pipe 100 by welding, the cap (on both ends 130 of the pipe 100) By combining the 110 and seam resistance welding using the seam resistance welding unit 200, the welding portion 120 is formed while rotating to form a junction.

That is, as described above, after the main pipe 100 and the cap 110 are assembled into the chromium copper lower electrode 230, the upper electrode 210 is turned on when the current supply unit is turned on. ) Rotates, and thus the chromium copper upper electrode 210 rotates, and welding is performed by arc heat generated between the chromium copper lower electrode 230.

At this time, the heat pipe 100 and the cap 110 rotate together as the chromium copper lower electrode 230 rotates. Accordingly, the junction of the heat pipe 100 and the cap 110 is connected to the seam welding. To be bonded.

In addition, in the process of seam resistance welding is performed, in order to cool the heat generated in the welding process, the cooling unit 500 is cooled by injecting a cooling water to the welded portion.

That is, while performing seam resistance welding at a lower temperature than the conventional high temperature welding such as argon welding, by cooling the heat generated in the welding process by the cooling water input, the physical property change of the material due to the high temperature generated in the welding process and the welding part It is possible to prevent the leakage phenomenon of the heat medium material filled inside due to the poor.

In addition, Figure 3 is a cross-sectional view showing that the ring operation was made with a flange flanged seam resistance welding shown in FIG.

That is, the seam resistance welding is completed pipe 100 is flanged to work to strengthen and seal the welded portion 120 as necessary to the outer portion 130 of the cap 110 and the welded portion 120 It is finished by bending by the flange rolling work.

After the seam resistance welding the flange rolling work is to protect the appearance and the cap 110 of both ends 130 of the pipe 100, the work is completed according to the needs of the user and the user.

A welding unit for primary seam resistance welding by overlapping both ends of the conveyed pipe as described above, a driving unit for welding the pipe and the cap by welding to seal the pipe by moving the welding unit up and down; The heat pipe manufacturing apparatus and the manufacturing method including a cooling unit for cooling the heat generated in the primary seam resistance welding provides the following effects.

First, by using a seam welding machine that can be welded at a relatively low temperature, by providing a coolant to provide the effect of maintaining the characteristics of the raw material.

Second, by welding the heat pipe using low temperature welding and cooling water, it prevents the oxidation of the pipe material, the softening of the properties and the occurrence of minute cracks, and provides the effect of extending the life of the heat pipe.

Third, by dramatically lowering the defect rate by using low temperature welding and cooling water, it provides an effect of increasing productivity and lowering manufacturing costs.                     

It is to be understood that the invention is not limited to that described above and illustrated in the drawings, and that more modifications and variations are possible within the scope of the following claims.

Claims (3)

A welding unit for coupling seam to both ends of the transferred pipe and performing seam resistance welding; A drive unit for moving the welding unit up and down to seal both ends of the pipe by adhering the pipe and the cap by welding; A rotary drive unit rotating the welding unit to weld the pipe and the cap; And a cooling unit for cooling the heat generated in the primary seam resistance welding. In the method of manufacturing a heat pipe produced by joining and sealing a cap to both ends of the pipe by welding, Coupling caps at both ends of the pipe, seam resistance welding using a seam resistance welding machine, and cooling the heat generated in the resistance welding process simultaneously with the seam resistance welding by introducing cooling water through a cooling water pipe. Heat pipe manufacturing method characterized in that. The method of claim 2, Heat pipe manufacturing method characterized in that to finish by performing a flange rolling (flange rolling) for reinforcing and airtight the pipe is completed seam resistance welding.

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