TWI571378B - The pipe joint structure and manufacturing method of heat exchanger - Google Patents

Description

Pipe joint structure and manufacturing method of heat exchanger

The invention relates to a pipe joint structure and a manufacturing method thereof, in particular to a pipe joint structure and a manufacturing method of a heat exchanger.

According to the conventional method for manufacturing a pipe joint, the method for manufacturing a fluororesin pipe joint of the No. I392580, which is issued on April 11, 2013, is a method of manufacturing a conventional method. After the bundles are arranged in a bundle, they are bounded by a base ring that is annular as a joint, and the piping is in contact with the welded portion of the base. Further, a ring-shaped reinforcing portion is provided in the base chamber, and the reinforcing portion is provided. A hole passes through a plurality of outer edges of the bundled tube, whereby the reinforcing portion is looped on the outer edge of the bundle pipe and closely fits the inner wall and the welded portion, and a pressure tube is placed from the open portion of the base into the extrusion reinforcement portion. At this time, when the welding operation is performed, the piping distributed on the outer edge can be integrally welded to the welded portion and the reinforcing portion, and the outer walls of the adjacent pipes are welded, and the contact faces between the reinforcing portion and the base are welded to each other. In one, finally exit the heating mold and cool the forming crucible to complete the pipe joint of a heat exchanger.

It is not difficult to find out the shortcomings of the above-mentioned conventional structure. The main reason is as follows: Since the conventional pipe joint is manufactured, some of the bundled pipes are only in contact with the welded portion of the outer ring and the reinforcing portion, thereby causing the heating mold When the heating operation is performed, some of the pipes have only the outer ring portion and the base portion and the reinforcing portion have a welded integral shape, and the outer wall of the pipe in which the inner ring is not in contact with the welded portion and the reinforcing portion is not possible due to temperature Effectively transmitted and lost to be welded In the fixed state, the piping can not be reliably fixed by welding, and the gap between the piping is also easy to occur, and the piping is welded and fixed by heating and then welded and fixed to the welded portion and the reinforcing portion of the adjacent contact, since the inside of the piping is not seen. Any anti-melting type of articles makes these pipes easy to be deformed by being softened, and in severe cases, the pipes are too deformed to close, resulting in the closure of the aperture, resulting in an increase in the defective rate of the pipe joints, lack of manufacturing efficiency and improved processing. Cost, not economical.

In view of this, the inventors have been engaged in the manufacturing development and design experience of related products for many years, and after detailed design and careful evaluation of the above objectives, the present invention has finally become practical.

The technical problem to be solved by the present invention is to provide a heat exchange tube joint structure and a manufacturing method in view of the above-mentioned shortcomings existing in the prior art.

A method for manufacturing a pipe joint of a heat exchanger, which comprises the steps of mold clamping, placing a base pipe, placing a pipe, welding a work, and cooling demolding, wherein the mold of the pipe joint is clamped, and the mold includes a mold Heating the mold and a heating ring, wherein the heating mold is provided at the center of the end surface with a plurality of heating mold columns arranged in a predetermined shape, the heating ring system has a shaft through hole hollow, and the through hole through the shaft is stacked by the heating mold column and the heating mold. And forming a nesting space between the inner wall of the shaft perforation and the heating mold column to provide a fluororesin base tube for making the pipe joint; and inserting a fluororesin base pipe for forming the pipe joint, the base pipe having an open end and a welded end And forming a communicating chamber between the open end and the welding end, and forming a welding surface of the inner wall of the chamber, the base tube is matched with the nesting space between the heating mold and the heating ring, and the chamber is surrounded by a plurality of heating Outside the mold column, and bonding the welded end to the end surface of the heating mold, thereby making the base tube compatible between the heating mold and the heating ring; and arranging a plurality of fluororesin pipes for providing a carrier fluid, the Lines are sequentially sleeved on the column was heated mold a predetermined shape, while limiting the substrate tube to a receiving chamber, each adjacent piping system and against each other, and The outer peripheral pipe is attached to the welding surface of the chamber, and one end of the pipe is connected to the end face of the heating die corresponding to the welded end of the base pipe, and the other end is extended by the open end of the base pipe; the welding operation is performed through the heating mold and Heating and heating of the heating ring, the welding surface of the base pipe and the piping of the outer periphery are welded together, and the adjacently fitting pipes are welded and integrated by the heating mold and the heating mold column, and the heating mold column is utilized. The shaping of each pipe is achieved, the welding is softened to avoid deformation or forming a closed state, and finally, after cooling, the heating mold and the heating ring are demolded from the base pipe and the plurality of pipes, and the heat exchanger is completed. Pipe connector.

Compared with the effect of the prior art: the pipe joint of the heat exchanger comprises a base pipe and a plurality of pipes arranged in a predetermined shape, and the heat-sealing type is integrated through the heating mold and the mold clamping limit of the heating ring, and the heating mold is provided A plurality of heating mold columns arranged in a predetermined shape can not only provide a plurality of pipe through sleeves to achieve an accurate arrangement limit, but on the other hand, when the welding operation step is performed, the adjacent pipes can be welded and fixed to each other through the heating mold column, and the piping is added. The range of integration with the base pipe can reduce the generation of the gap, and can also be shaped by the plug of the heated mold column to prevent the inner diameter of the pipe from being deformed and sealed due to heat softening, so that the position of the welded end of the base pipe can be effectively completed. Hole forming, which greatly improves the yield of pipe joint manufacturing, and has the advantages of both manufacturing efficiency and processing cost reduction.

A‧‧‧Mold clamping

B‧‧‧Into the base pipe

C‧‧‧Input piping

D‧‧‧ welding operation

E‧‧‧cooling and demoulding

10‧‧‧ pipe joint

11‧‧‧Base tube

111‧‧‧Open end

112‧‧‧welding end

113‧‧ ‧ room

114‧‧‧welding joint

12‧‧‧Pipe

121‧‧‧ hole

13‧‧‧welding column

20‧‧‧Mold

21‧‧‧heating mould

211‧‧‧heated mold column

22‧‧‧heating ring

221‧‧‧Axis perforation

222‧‧‧ Nesting space

Figure 1 is a block diagram of the manufacturing steps of the present invention.

Fig. 2 is a schematic view showing the cooperation between the mold and the pipe joint in the manufacturing step of the present invention.

Fig. 3 is a schematic view showing the steps of mold clamping and base pipe placement of the present invention.

Fig. 4 is a schematic view showing the steps of piping of the present invention.

Fig. 5 is a schematic view showing the steps of the welding operation of the present invention.

Figure 6 is a schematic view showing the steps of cooling demolding of the present invention.

Figure 7 is a perspective view of the finished pipe joint of the present invention.

Figure 8 is a perspective view of another perspective view of the finished pipe joint of the present invention.

Figure 9 is a cross-sectional view showing the finished pipe joint of the present invention.

In order to enable your review committee to have a better understanding and understanding of the purpose, features and effects of the present invention, please follow the [simplified description of the drawings] as follows: First, please refer to Figure 1 in conjunction with Figure 2. A method for manufacturing a pipe joint of a heat exchanger, comprising the following steps: a mold clamping A, a base pipe B, a pipe C, a welding operation D, a cooling release E, and the like, wherein: For the mold clamping A step of the pipe joint 10, please refer to FIG. 3 at the same time, the mold 20 includes a heating mold 21 and a heating ring 22, and the heating mold 21 has a plurality of heating arranged in a predetermined shape at the center of the end surface. The mold column 211 has a shaft through hole 221 hollowed through the shaft through hole 221 and is stacked with the heating mold 21 by the heating mold column 211, and a nesting space 222 is formed between the inner wall of the shaft hole 221 and the heating mold column 211. The fluororesin-based tube 11 for forming the pipe joint 10 is provided; the step B of inserting the fluororesin-based tube 11 for forming the pipe joint 10, and also referring to FIG. 3, the base pipe 11 having an open end 111 And a fusion end 112, and A communicating chamber 113 is formed between the discharge end 111 and the welding end 112, and the inner wall of the chamber 113 forms a welding surface 114. The base tube 11 is fitted into the nesting space 222 between the heating mold 21 and the heating ring 22, and simultaneously The chamber 113 is surrounded by a plurality of heating mold columns 211, and the welding end 112 is brought into contact with the end surface of the heating mold 21, thereby the base tube 11 is compatible with the nesting space 222 between the heating mold 21 and the heating ring 22. ; The C step of providing a plurality of fluororesin pipes 12 for carrying a fluid is continued. Referring to FIG. 4 at the same time, the pipes 12 are sequentially sleeved on the heating mold column 211 to form a predetermined shape, and are limited to the base pipe 11. In the chamber 113, the adjacent pipes 12 abut each other, and the outer peripheral pipe 12 is fitted to the welding surface 114 of the chamber 113, and one end of the pipe 12 corresponds to the welded end 112 of the base pipe 11. The other end is extended by the open end 111 of the base pipe 11, and a plurality of welding posts 13 are additionally provided. The welded posts 13 are placed in the base pipe 11 before being welded. The chamber 113 and the piping 12 arranged around the outer periphery enhance the tightness between the plurality of pipes 12, and are softened by the heat of the welded post 13 to fill the gap formed between the pipe 12 and the base pipe 11, thereby providing a space between the pipe 12 and the base pipe 11. A better welding type; a welding operation D step, and as shown in Fig. 5, the heating mold 21 and the heating ring 22 of the mold 20 are heated and heated, so that the welding surface 114 of the base pipe 11 and the piping 12 at the outer periphery gradually become mutually The welding is integrated, and the pipes 12 adjacent to each other are re-attached The overheating mold 21 and the heating mold column 211 are heated and integrated to be welded together, and the heating mold column 211 is used to fix the shape of each of the pipes 12, thereby avoiding the softening of the welding and deforming or forming the closed state of the pipe 12; cooling the demoulding step E, and finally As shown in Fig. 6, after being cooled, the heating mold 21 and the heating ring 22 are demolded from the base pipe 11 and the plurality of pipes 12 to complete the manufacturing steps of the pipe joint 10 of the heat exchanger.

By the above manufacturing process, a finished pipe joint 10 is completed, as shown in Figures 7, 8, and 9, the pipe joint 10 has a fluororesin base pipe 11, and a plurality of arrangements integrally welded and fixed in the base pipe 11. a fluororesin pipe 12 having a predetermined shape, the base pipe 11 having a hollow end having an open end 111 and a welded end 112, wherein one end of the pipe 12 is flush with the welded end 112 of the base pipe 11, and the other end is The open end 111 of the base pipe 11 extends out, and the base pipe 11 is matched with several by the welding operation. The tubes 12 are integrally welded to each other, and at the same time, the gap between the base tube 11 and the plurality of tubes 12 is filled, and a plurality of tubes 12 are formed at the end faces of the welded ends 112 to form a plurality of holes 121 arranged in a predetermined shape to provide a fluid passage therethrough. The structure is configured to form a pipe joint structure of a heat exchanger.

With the structure of the above specific embodiment, the following benefits can be obtained: the pipe joint 10 of the heat exchanger includes the base pipe 11 and a plurality of pipes 12 arranged in a predetermined shape, and the mold clamping limit of the heating die 21 and the heating ring 22 is transmitted. Further, the heating and welding type is integrated, and the heating mold 21 is provided with a plurality of heating mold columns 211 arranged in a predetermined shape on the end surface, which not only provides a plurality of pipes 12 to pass through the sleeve to achieve an accurate arrangement limit, but also performs a welding operation D. In the step, the adjacent pipes 12 can be welded and fixed to each other through the heating mold column 211, and the range in which the pipe 12 and the base pipe 11 are welded integrally is increased, the generation of the gap is reduced, and the fixing of the heating mold column 211 can be used to prevent the piping. The inner diameter of the 12 is deformed and sealed by heat softening, so that the position of the welded end 112 of the base pipe 11 can effectively form the hole 121 of the pipe 12, which greatly improves the manufacturing yield of the pipe joint 10, and has both manufacturing efficiency and processing cost. The benefit.

In summary, the present invention has indeed achieved a breakthrough structural design, and has improved invention content, and at the same time, can achieve industrial utilization and progress, and the present invention is not found in any publication, but also novel, when In accordance with the provisions of the relevant laws and regulations of the Patent Law, the application for invention patents is filed according to law, and the examination authority of the bureau is required to grant legal patent rights.

The above is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto; that is, the equivalent variations and modifications made by the scope of the present invention should still belong to the present invention. Within the scope of the patent.

10‧‧‧ pipe joint

11‧‧‧Base tube

111‧‧‧Open end

112‧‧‧welding end

113‧‧ ‧ room

114‧‧‧welding joint

12‧‧‧Pipe

13‧‧‧welding column

20‧‧‧Mold

21‧‧‧heating mould

211‧‧‧heated mold column

22‧‧‧heating ring

221‧‧‧Axis perforation

Claims (2)

A method for manufacturing a pipe joint of a heat exchanger, comprising the steps of: forming a mold clamping of a pipe joint, the mold comprising a heating mold and a heating ring, wherein the heating mold is arranged at a center of the end surface to be arranged in a predetermined manner a heating mold column having a shape, the heating ring has a shaft perforation, and the through hole is perforated through the heating mold column and the heating mold, and a nesting space is formed between the inner wall of the shaft perforation and the heating mold column to provide fluorine for making the pipe joint. a resin-based tube is incorporated; a fluororesin-based tube for forming a pipe joint is provided, the base pipe having an open end and a welded end, and a communicating chamber is formed between the open end and the welded end, and the inner wall is formed The welding surface is matched with the nesting space between the heating mold and the heating ring, and the chamber is surrounded by a plurality of heating mold columns, and the welding end is attached to the end surface of the heating mold, thereby the base tube is Compatible with the nesting space between the heating mold and the heating ring; placing a plurality of fluororesin pipes for providing a carrier fluid, and the pipes are sequentially sleeved on the heating mold column to form a predetermined shape, and at the same time In the chamber of the base pipe, and the adjacent pipes are abutted against each other, and the pipe of the outer periphery is fitted to the welding surface of the chamber, and one end of the pipe is stacked on the heating die corresponding to the welding end of the base pipe. The other end is extended from the open end of the base pipe; the welding operation is performed by heating and heating the heating mold and the heating ring, so that the welding surface of the base pipe and the outer peripheral pipe are welded together, and the adjacent fitting pipes are integrated. Then, through the heating mold and the heating mold column, the heating mold is heated and integrated, and the heating mold column is used to fix the shape of each pipe, thereby avoiding the softening of the welding and deforming the pipe or forming a closed state, and finally, after cooling, the heating mold and the heating ring are further heated. The pipe joint is removed from the base pipe and a plurality of pipes, and the pipe joint of the heat exchanger is completed. The method for manufacturing a pipe joint of a heat exchanger according to the first aspect of the invention, further comprising: a plurality of welding columns, the fusion columns are arranged before the welding operation, and are arranged in the chamber of the base pipe and arranged Between the outer piping, the tightness between the pipes is increased, and the gap between the piping and the base pipe is filled by the heat-softening of the welding post to provide a better fusion type between the piping and the base pipe.