WO2014007468A1

WO2014007468A1 - Method for manufacturing turn-fin condenser

Info

Publication number: WO2014007468A1
Application number: PCT/KR2013/004615
Authority: WO
Inventors: 조진욱
Original assignee: (주)하나
Priority date: 2012-07-04
Filing date: 2013-05-27
Publication date: 2014-01-09
Also published as: KR101223423B1; WO2014007469A1

Abstract

The present invention relates to a method for manufacturing a turn-fin condenser provided with a three-dimensionally shaped fastening tube for fixedly holding in place a turn-fin, which is wound around the outer surface of a refrigerant pipe. The method for manufacturing a turn-fin condenser according to the present invention comprises: an end fixing step (S400) for fixing the ends of a refrigerant pipe (112) and a turn-fin (114); a turn-fin fastening step (S410) for helically winding the turn-fin (114) around the refrigerant pipe (112); a planar bending step (S420) for bending a turn-fin tube (110) 180° in a zig-zag shape and arranging same horizontally and evenly; a bracket fastening step (S430) for fastening a bracket (150 or 200) to the turn-fin tube (110); a three-dimensional bending step (S440) for bending the turn-fin tube (110), which has passed the bracket fastening step (S430), perpendicularly with respect to the bending direction of the planar bending step (S420) so as to create a multi-sided three-dimensional shape; and a base coupling step (S450) for coupling and fixing the bracket (150 or 200) to a base frame (120); and a final bending step (S460). The present invention has the benefit of having a reduced volume and an improved working efficiency.

Description

Manufacturing Method of Turnpin Condenser

The present invention relates to a manufacturing method of a turn-pin condenser, the turn-pin tube is bent a number of times to have a three-dimensional shape, and relates to a manufacturing method of the turn-pin condenser in which the fastening tube is used for fixing the turn pin wound on the outer surface of the refrigerant pipe. .

In general, a condenser is mainly used in an air conditioner such as a refrigerator or a freezer, and is used for heat exchange between a refrigerant and air.

In the condenser, for efficient heat exchange, the turn pin is wound around the tube (refrigerant tube) to increase the heat exchange area, and the condenser that spirally turns the turn pin around the tube (refrigerator tube) is called a turn pin condenser.

[0003] In Patent Application No. 20-0403755, a number of turnpin tubes are disclosed in which such spiral tubes are wound.

As shown in the figure, a turn pin is wound spirally on the outer circumferential surface of the tube (refrigerator tube), and the welding or brazing process is performed to fix the turn pin to the outer circumferential surface of the tube (refrigerator tube). do.

However, if welding or brazing is performed to fix the turn pin to the tube (refrigerant tube), the tube (refrigerant tube) is damaged in this process. That is, a hole is formed in a tube (refrigerant tube) by heat, or it becomes relatively thin and becomes weak. Therefore, there is a problem that damage occurs when the internal refrigerant leaks or when the tube (refrigerant tube) is bent (when bending) for assembly.

Accordingly, an object of the present invention is to solve the problems of the prior art as described above, the turn pin tube is bent a number of times to have a three-dimensional shape and at the same time the end of the turn pin is wound on the outer surface of the refrigerant pipe to the fastening tube It is to provide a turn pin condenser coupled by.

Another object of the present invention is to provide a method of manufacturing a turn pin condenser, which compresses the end of the turn pin wound on the outer surface of the refrigerant pipe, and then contracts the coupling tube with heat.

According to a feature of the present invention for achieving the above object, the manufacturing method of the turn pin condenser according to the present invention, the end fixing step of fixing the end of the turn pin 114 to the end of the refrigerant pipe 112 (S400) Wow; A turn pin coupling step (S410) of spirally winding the turn pins 114 around the coolant tube 112; A planar bending step (S420) of bending the turnpin tube 110 which has undergone the turnpin coupling step (S410) at 180 ° in a zigzag shape to form a flat line; Bracket fastening step (S430) for fastening the bracket (150 or 200) to the turn pin tube 110 bent in a zigzag through the plane bending step (S420); A three-dimensional bending step (S440) of bending the turn pin tube (110) passed through the bracket fastening step (S430) to a polygonal three-dimensional shape by bending vertically with the bending direction in the planar bending step (S420); A base coupling step (S450) of fixing the

bracket

150 or 200 of the turn pin tube 110 formed into a polygonal shape by the three-dimensional bending step (S440) to the base frame 120; And a finishing bending step (S460) for finishing by bending the end of the turn pin tube 110 through the base coupling step (S450) again.

The end fixing step (S400) is a process of making the end of the turn pin 114 wound on the outer circumferential surface of the refrigerant pipe 112 to be in close contact with the refrigerant pipe 112 by using the fastening tube 300 of the elastic material. It features.

In addition, the end fixing step (S400),

Coupling process (S402) of spirally winding the end of the turn pin 114 to the outer peripheral surface of the end of the refrigerant pipe 112, and the pressing process to distort the end of the turn pin 114 wound on the outer peripheral surface of the refrigerant pipe 112 (S404), the insertion process (S406) for inserting the fastening tube 300 in the portion where the turn pin 114 is compressed by the pressing process (S404) and the fastening tube 300 inserted by the insertion process (S406) It is characterized in that it comprises a heating step (S408) to apply heat to the fastening tube 300 is contracted.

In the manufacturing method of the turnpin condenser according to the present invention has the following effects.

In the method for manufacturing a turnpin condenser according to the present invention, the turnpin tubes are bent in a plane and aligned, and then bent in three dimensions to have an overall shape. Therefore, the work efficiency is improved, there is an advantage that the installation space is reduced.

In addition, in the present invention, a fastening tube is further provided at the end of the turn pin which is spirally wound around the coolant tube, so that the turn pin is fixed to the coolant tube. Therefore, the welding or brazing process is unnecessary as in the related art, and thus there is an advantage in that the problem that the refrigerant tube is broken or the refrigerant leaks is prevented.

And, in the manufacturing method of the turn pin condenser according to the present invention, the step of compressing the end of the turn pin wound on the refrigerant pipe, the step of inserting the fastening tube to the outside of the compressed turn pin, and by applying heat to the fastening tube to shrink Steps and the like are used. Therefore, there is an effect that the turn pin is firmly fixed to the outer circumferential surface of the refrigerant pipe by the fastening tube.

1 is a perspective view showing the appearance of a turn pin condenser manufactured by the method for manufacturing a turn pin condenser according to the present invention;

Figure 2a is a perspective view of the alignment bracket constituting the turnpin condenser produced by the embodiment of the present invention.

FIG. 2B is a sectional view taken along the line AA ′ of FIG. 2A; FIG.

Figure 2c is a state of use of the alignment bracket constituting the turn pin condenser produced by the embodiment of the present invention.

Figure 3 is a perspective view showing the configuration of the fastening bracket constituting the turn pin condenser produced by the embodiment of the present invention.

Figure 4 is a partial perspective view showing a state in which a fastening tube constituting the turn pin condenser manufactured by the embodiment of the present invention was used.

Figure 5 is a block diagram showing the configuration of a preferred embodiment of a method for manufacturing a turnpin condenser according to the present invention.

Figure 6 is a process diagram showing a manufacturing method of a turnpin condenser according to the present invention.

Figure 7 is a block diagram showing a detailed process of the end fixing step constituting an embodiment of the present invention.

8 is a manufacturing process showing a detailed process of the end fixing step constituting an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of a method for manufacturing a turnpin condenser according to the present invention will be described in detail.

First, look at the configuration of the turn pin condenser produced by the present invention.

1 shows a perspective view of the turnpin condenser produced by the present invention.

As shown therein, the condenser 100 has a structure in which the turn pin tube 110 is wound several times. The turn pin tube 110 includes a coolant tube 112 through which a coolant flows, and a turn pin 114 spirally wound around the coolant tube 112.

The refrigerant pipe 112 is formed of a pipe through which a refrigerant flows, and is bent a plurality of times so that the condenser has a predetermined volume as shown.

Meanwhile, a plurality of alignment brackets 200 are provided to align the refrigerant pipes 112 wound at a plurality of times at regular intervals, and a base frame 120 is provided at a lower end thereof to support the refrigerant pipes 112 wound many times. Done. The alignment bracket 200 is to directly fix the refrigerant pipe 112, the detailed configuration of the alignment bracket 200 will be described below.

In addition, the fastening tube 300 is inserted into both ends of the turn pin 114 is wound on the refrigerant pipe (112). That is, the turn pin 114 wound around the coolant tube 112 is provided at the end of the turn pin 114 so that the fastening tube 300 is in close contact with the coolant tube 112.

The fastening tube 300 is formed to have elasticity so that the end of the turn pin 114 is tightly fixed to the refrigerant pipe 112. Preferably, the fastening tube 300 is made of a polyolefin that is shrunk by heat.

And, both ends of the base frame 120 is further provided with a connecting frame 130, so that the upper turn pin tube 110 is fixed.

Looking in more detail, the upper side of the base frame 120, the fastening bracket 150 is fitted to the refrigerant pipe 112 is further provided. The fastening bracket 150 is connected to the base frame 120 by the connection frame 130 and is fixed.

As such, the connection frame 130, the fastening bracket 150 is fixed to the base frame 120, so that the turn pin tube 110 wound a plurality of times is fixed to the upper side of the base frame 120. .

Therefore, the connection frame 130 is fastened to the base frame 120 and the fastening bracket 150, respectively. That is, the lower end of the connection frame 130 is coupled to the base frame 120, the upper end of the connection frame 130 is coupled to the side end of the fastening bracket 150 by the fastening bolt 140.

2A and 2B show detailed configurations of the alignment bracket 200, respectively. That is, FIG. 2A is a perspective view of the alignment bracket 200, and FIG. 2B is a cross-sectional view taken along the line AA ′ of FIG. 2A. In addition, the use state of the alignment bracket 200 is shown in Figure 2c.

As shown in these drawings, the alignment bracket 200 of the turn pin condenser according to the present invention includes a base 210 forming an appearance, a side plate 220 for coupling with other components, and a plurality of refrigerant tubes. It consists of a coupling plate 230 and the like to support the 112 is fitted.

The base 210, as shown, is made of a rectangular plate having a thickness of a predetermined size, such a base 210 forms the overall skeleton of the alignment bracket 200.

In addition, as illustrated, a plurality of heat generating holes 212 are formed to penetrate up and down in the base 210. The heat generating hole 212 serves to facilitate the flow and heat dissipation of air through the base 210. That is, since the heat exchange occurs in the condenser 100 having the configuration as shown in FIG. 1, the efficiency of the condenser 100 is increased only when heat exchange between the inside and the outside of the condenser 100 is easily performed. Therefore, when a plurality of heat generating holes 212 are formed through the base 210 as in the present invention, the air flow inside and outside the condenser 100 is smoothly formed through the heat generating holes 212, thereby exchanging heat exchange efficiency. This is augmented.

The side plate 220 is vertically bent from both ends of the left and right of the base 210 as shown, extending upward. In addition, the side plate 220 is formed through the side fastening holes 222 for coupling with other components. That is, the side plate 220 is formed with a side fastening hole 222 through which the fastening bolt 140 through which the connection frame 130 and the alignment bracket 200 are connected to each other.

The coupling plate 230 is vertically bent from the front and rear ends of the base 210 to extend upward. The plurality of refrigerant pipes 112 are fitted into and fixed to the coupling plate 230.

In the coupling plate 230, a pair of fastening ends 232 are formed in pairs to surround and fix the outer surface of the refrigerant pipe 112 from left and right. In addition, a plurality of such fastening ends 232 are provided at equal intervals along the longitudinal direction of the base 210.

An interval between the pair of fastening ends 232 has a size corresponding to the outer diameter of the refrigerant pipe 112. Therefore, the refrigerant pipe 112 is inserted and inserted between the pair of fastening ends 232.

Looking in more detail, between the pair of fastening end 232, the receiving groove 234, the accommodating the refrigerant pipe 112 is formed to be recessed downward. Therefore, the lower surface of the receiving groove 234 is formed to have a round curvature corresponding to the appearance of the refrigerant pipe (112).

Of course, the space between the pair of fastening ends 232 may be formed to have a size slightly smaller than the size of the outer diameter of the refrigerant pipe (112). In this case, the coolant pipe 112 will be inserted into and fixed between the pair of fastening ends 232.

At the lower end of the receiving groove 234, the inner groove 236 is formed to be recessed downward so that the pair of fastening end 232 is easily bent inward to each other. The inner groove 236 is formed to have a predetermined depth downward, as shown. Therefore, since the inner groove 236 serves as a gap between the pair of fastening ends 232, the pair of fastening ends 232 facilitates the proximity of each other.

Meanwhile, an outer groove 238 is further formed at an outer lower end of the pair of fastening ends 232 so that the pair of fastening ends 232 are easily bent inside each other. The outer groove 238 is formed to be recessed to the inner side, as shown. That is, it consists of a '⊃', '⊂' shape is configured to be recessed laterally. The outer groove 238 bends so that the pair of fastening ends 232 easily approach each other like the inner groove 236.

In addition, the pair of fastening ends 232, the upper surface 240, as shown, is formed to be inclined so that its height gradually lower toward the inside. As such, the reason why the upper surface 240 of the fastening end 232 is inclined is because the coolant pipe 112 is inserted into the receiving groove 234 between the pair of fastening ends 232. The pipe 112 is to be easily inserted into the receiving groove 234 by sliding along the upper surface 240 of the fastening end (232).

As such, the alignment of the refrigerant pipe 112 using the alignment bracket 200 is performed after the bending process of the turn pin tube 110.

Specifically, first, the turn pin tube 110 is bent a number of times to arrange several strands side by side. That is, the turn pin tube 110, the turn pin 114 is wound on the outer side of the coolant tube 112 is bent a plurality of times to align side by side, and then the turn pin tube bent several times using the alignment bracket 200 ( 110).

When the alignment bracket 200 is close to the turn pin tube 110, the coolant tube 112 is inserted into the receiving groove 234 of the alignment bracket 200. That is, the refrigerant pipe 112 is inserted into the receiving groove 234 as shown in (a) of FIG. 2C. Of course, at this time, since the upper surface 240 of the fastening end 232 is formed to be inclined, the refrigerant pipe 112 is guided to easily enter the receiving groove 234.

After the refrigerant pipe 112 is inserted into the receiving groove 234 as shown in FIG. 2C, the upper ends of the pair of fastening ends 232 are overlapped with each other by a user or a pressure press. That is, the pair of fastening ends 232 are bent to apply a force to approach each other. In this case, the upper ends of the pair of fastening ends 232 as shown in (b) of FIG. 2C overlap each other.

As such, when the upper ends of the pair of fastening ends 232 overlap each other, the upper ends of the receiving grooves 234 are shielded, thereby preventing external detachment of the refrigerant pipe 112 inserted into the receiving grooves 234. do.

Therefore, the fixing of the refrigerant pipe 112 is made firm. Since the fastening ends 232 are formed side by side at equal intervals, the plurality of refrigerant pipes 112 are firmly fixed side by side at equal intervals.

3 shows the configuration of the fastening bracket 150 in a perspective view.

The fastening bracket 150, as shown, the bottom plate 152 to form a lower surface, the side plate 154 is formed by extending vertically bent upwards from the left and right of the bottom plate 152 and the bottom plate 152 is vertically bent upwards and forwards from front and rear of 152 to be fitted into the coolant pipe 112 to be fitted with the fitting piece 156 or the like.

The fastening bracket 150 is similar to the configuration of the alignment bracket 200. That is, since the length is shorter than the alignment bracket 200 and the other configuration is the same, a detailed description of the same configuration will be omitted below.

Specifically, the bottom plate 152 corresponds to the base 210 of the alignment bracket 200, the side plate 154 is the side plate 220, and the fitting piece 156 is It corresponds to the coupling plate 230.

A vent hole 152a is further formed in the bottom plate 152 of the fastening bracket 150, and a side plate hole 154a is formed in the side plate 154. The vent hole 152a corresponds to the heating hole 212, and the side plate hole 154a corresponds to the side fastening hole 222 where the fastening bolt 140 penetrates.

The fitting piece 156 is provided with a pair of fitting ends 160 for fixing the refrigerant pipe 112 from side to side. The fitting end 160 corresponds to the fastening end 232 of the alignment bracket 200. Therefore, the space between the pair of fitting end 160 has a size corresponding to the outer diameter of the refrigerant pipe 112.

A fitting groove 162 corresponding to the accommodation groove 234 is formed between the pair of fitting ends 160, and a guide groove corresponding to the inner groove 236 is formed at a lower end of the fitting groove 162. 164 is formed to be recessed downward.

4 illustrates a state in which the fastening tube 300 is fitted to an end of the turn pin 114.

As shown in this, the fastening tube 300, a portion (right) surrounds the end of the turn pin 114, the other portion (left) is installed to surround the refrigerant pipe (112). Accordingly, the refrigerant pipe 112 and the turn pin 114 are firmly held by each other so as to be firmly fixed to each other.

On the other hand, the end of the turn pin 114 wound on the refrigerant pipe 112 is crushed by pressing so that the fastening tube 300 is fitted to the outside. That is, a part of the end of the turn pin 114 is crushed with a pressing jig, and then the fastening tube 300 is inserted into this part.

In the manufacture of a turn pin condenser according to the present invention having such a configuration, the turn pin tube 110 is bent in a zig-zag multiple times to volume and then the base frame 120 using the alignment bracket 200 and the fastening bracket 150. Turn pin tube 110 is fixed to. In this case, a turnpin condenser as shown in FIG. 1 is manufactured.

5 and 6 show a preferred embodiment of the method for manufacturing a turnpin condenser according to the present invention. That is, FIG. 5 is a block diagram showing a manufacturing method of the turn pin condenser according to the present invention, and FIG. 6 is a process diagram showing the manufacturing method of the turn pin condenser according to the present invention.

As shown in these figures, the manufacturing method of the turn pin condenser according to the present invention, the end fixing step (S400) for fixing the end of the turn pin 114 to the end of the refrigerant pipe 112, and the refrigerant pipe 112 Turn-pin coupling step (S410) of winding the turn pin 114 around the spiral), the planar bending step (S420) for bending the turn-pin tube 110 in a zigzag form to be arranged in a flat plane (S420) and the turn-pin tube ( Bracket fastening step (S430) for fastening the bracket (150 or 200) to the 110 and the turn pin tube 110 passed through the bracket fastening step (S430) is bent perpendicular to the bending direction in the plane bending step (S420) By connecting the bracket (150 or 200) of the three-dimensional bending step (S440) and the turn pin tube 110 formed into a polygonal shape by the three-dimensional bending step (S440) to the base frame 120 Fixing base coupling step (S450) and the base coupling step (S4) 50 is made of a finishing bending step (S460), etc. to finish by bending the end of the turn pin tube 110 again.

The end fixing step (S400), as shown in Figure 6 (a), is the step of fixing the turn pin 114 to the end of the outer peripheral surface of the refrigerant pipe 112, in this case the fastening tube 300 is used do. That is, the end fixing step (S400), by using the fastening tube 300 of the elastic material, so that the end of the turn pin 114 wound on the outer peripheral surface of the refrigerant pipe 112 is in close contact with the refrigerant pipe 112. It is a process.

The turn pin coupling step (S410) is a step of spirally winding the turn pin 114 around the coolant pipe 112. That is, a process of spirally winding the turn pin 114 around the refrigerant pipe 112 as shown in FIG. 6 (b) while fixing the end of the turn pin 114 in a state as shown in FIG. to be.

In this case, the turn pin tube 110 as described above is made.

The plane bending step (S420) is a process of bending the turnpin tube 110 through the turnpin coupling step (S410) at 180 ° in a zigzag shape to arrange them flat. That is, as shown in (c) of FIG. 6, the turn pin tube 110 is bent to have the same length in a zigzag direction from side to side. After passing through the planar bending step S420, the turn pin tube 110 has a two-dimensional planar shape alternately 180 ° in multiple stages, as shown in FIG. 6C.

The bracket fastening step (S430) is a process of fastening the

bracket

150 or 200 to the turn pin tube 110 bent in a zigzag through the plane bending interval.

The bracket fastening step (S430) is a process of aligning the refrigerant pipe 112 using the alignment bracket 200. That is, the turn-pin tube 110 is bent a number of times to align so that several strands are side by side as shown in Figure 6 (c), and then the turn-pin tube 110 is bent several times using the alignment bracket (200) To be fixed.

In this case, as described above, when the alignment bracket 200 is brought close to the turn pin tube 110, the refrigerant pipe 112 is inserted into the receiving groove 234 of the alignment bracket 200. That is, the refrigerant pipe 112 is inserted into the receiving groove 234 as shown in (a) of FIG. 2C.

Then, after the refrigerant pipe 112 is inserted into the receiving groove 234 as shown in (a) and 6 (d) of Figure 2c, the pair of fastening by the user or pressure press 500 or the like. The top of the stage 232 is pressed so as to overlap each other. That is, as shown in (b) of FIG. 2C, the upper ends of the pair of fastening ends 232 overlap each other.

On the other hand, in this case, the fastening bracket 150 is also coupled to a predetermined position of the aligned turn pin tube 110, respectively, the coupling process of the fastening bracket 150 is the alignment bracket 200 and the turn pin tube (described above) Same as the combination process of 110).

After the bracket fastening step S430 is performed, a three-dimensional bending step S440 is performed.

The three-dimensional bending step (S440) is a process of bending the turn pin tube 110 passed through the bracket fastening step (S430) perpendicular to the bending direction in the plane bending step (S420). That is, as shown in (e) of FIG. 6, the turn pin tubes 110 flatly aligned by the plane bending step S420 are wound in a three-dimensional shape of an angled square in the longitudinal direction.

The base coupling step (S450) is a process of coupling and fixing the

bracket

150 or 200 of the turn pin tube 110 formed in a polygonal shape by the three-dimensional bending step (S440) to the base frame 120. That is, the process of coupling the alignment bracket 200 or the fastening bracket 150 to the base frame 120 by using the connection frame 130.

Of course, in such a base coupling step (S450), it will be possible to make the alignment bracket 200 or the fastening bracket 150 is directly coupled to the base frame 120 using a bolt (bolt) or the like.

As such, after passing through the base coupling step (S450), a form of a turn pin condenser of the form shown in FIG. 6 (f) or FIG. 1 is provided.

In addition, the finishing bending step (S460) is a process of finishing by bending the end of the turn pin tube 110 through the base coupling step (S450) again. That is, after the base joining step (S450) to form as shown in Figure 6 (f), it is a process of bending and finishing the turn pin tube 110 protruding to the outer end.

7 and 8 show the detailed process of the end fixing step (S400).

7 is a block diagram showing a detailed process of the end fixing step (S400) is shown, Figure 8 is a manufacturing process diagram showing a detailed process of the end fixing step (S400) is shown.

As shown in these figures, the end fixing step (S400), the coupling process (S402) to spirally wound the end of the turn pin 114 on the outer peripheral surface of the end of the refrigerant pipe 112, and the refrigerant pipe 112 Compression process (S404) to distort the end of the turn pin 114 wound on the outer circumferential surface of the, and inserting process (S406) for inserting the fastening tube 300 to the portion where the turn pin 114 is compressed by the compression process (S404) ), And a heating process (S408) to apply heat to the fastening tube 300 inserted by the insertion process (S406) so that the fastening tube 300 is contracted.

The coupling process (S402), as shown in Figure 8 (a), is a step of spirally winding the turn pin 114 on the outer peripheral surface of the refrigerant pipe 112 of the pipe (pipe) shape.

And, in the pressing process (S404), as shown in Figure 8 (b), a portion of the end of the turn pin 114 wound on the outer surface of the refrigerant pipe 112, the pressing jig (not shown) By pressing from the outside by the turn pin 114 wound on the refrigerant pipe 112 is a process of distorting.

The insertion process (S406) is a step of inserting the fastening tube 300 so that the fastening tube 300 wraps the crushed portion of the turn pin 114. That is, the fastening tube 300 is a process of wrapping the distal end of the turn pin 114 and a part of the refrigerant pipe 112, respectively.

8 (c) shows the shape of the end of the turn pin tube 110, the fastening tube 300 is inserted by the insertion process (S406).

The heating process (S408), as shown in Figure 8 (d), is a process of applying heat to the fastening tube 300 fitted by the insertion process (S406). By applying heat to the fastening tube 300 by the heating process (S408) as described above, since the fastening tube 300 is made of a polyolefin material, it is contracted. Therefore, the turn pin 114 is more firmly fixed to the refrigerant pipe 112 by the contracting force of the fastening tube 300.

The scope of the present invention is not limited to the above-exemplified embodiments, and many other modifications based on the present invention will be possible to those skilled in the art within the above technical scope.

Claims

End fixing step (S400) for fixing the end of the turn pin 114 to the end of the refrigerant pipe (112);

A turn pin coupling step (S410) of spirally winding the turn pins 114 around the coolant tube 112;

A planar bending step (S420) of bending the turnpin tube 110 which has undergone the turnpin coupling step (S410) at 180 ° in a zigzag shape to form a flat line;

Bracket fastening step (S430) for fastening the bracket (150 or 200) to the turn pin tube 110 bent in a zigzag through the plane bending step (S420);

A three-dimensional bending step (S440) of bending the turn pin tube (110) passed through the bracket fastening step (S430) to a polygonal three-dimensional shape by bending vertically with the bending direction in the planar bending step (S420);

A base coupling step (S450) of fixing the bracket 150 or 200 of the turn pin tube 110 formed into a polygonal shape by the three-dimensional bending step (S440) to the base frame 120;

And a finishing bending step (S460) of finishing the bent end of the turn pin tube (110) through the base coupling step (S450).
The method of claim 1, wherein the end fixing step (S400),

Using a fastening tube 300 of the elastic material, the manufacturing method of the turn-pin condenser characterized in that the end of the turn pin 114 wound on the outer peripheral surface of the refrigerant pipe 112 is in close contact with the refrigerant pipe (112).
The method of claim 1 or 2, wherein the end fixing step (S400),

Coupling process (S402) of spirally winding the end of the turn pin 114 to the outer peripheral surface of the end of the refrigerant pipe 112, and the pressing process to distort the end of the turn pin 114 wound on the outer peripheral surface of the refrigerant pipe 112 (S404), the insertion process (S406) for inserting the fastening tube 300 in the portion where the turn pin 114 is compressed by the pressing process (S404) and the fastening tube 300 inserted by the insertion process (S406) Method of manufacturing a turn pin condenser, characterized in that it comprises a heating step (S408) by applying heat to the fastening tube 300 is contracted.