1. The utility model provides a concurrent flow heat exchanger of double flat pipe and manufacturing method thereof, includes collector tube (1), its characterized in that: a long-strip through hole (11) is formed in the surface of one side of the liquid collecting pipe (1), a flat pipe (12) is fixedly welded on the surface of the long-strip through hole (11), the two end surfaces of the flat tube (12) are fixedly welded on one side surface of the liquid collecting tube (1), fins (13) are fixedly welded on the surfaces of the flat tubes (12), a clapboard (14) is fixedly welded on the other side surface of the liquid collecting tube (1), the surface of the clapboard (14) is positioned at one side position of the strip-shaped through hole (11), the surfaces of the two sides of the clapboard (14) are fixedly welded with middle connecting rods (15), the liquid collecting pipe (1) comprises a right-angle half pipe (16) and an arc half pipe (17), the two end surfaces of the right-angle half pipe (16) are fixedly welded on the side surface of the arc-shaped half pipe (17), the surfaces of two sides of the right-angle half pipe (16) and the arc half pipe (17) form a long-strip welding seam (18);

the manufacturing method comprises the following steps:

s1, selecting a stainless steel sheet as a basic raw material, and cutting the stainless steel sheet according to design specifications to form a lath raw material;

s2, placing the batten raw materials into a punching machine, and respectively punching and forming by adopting a die to form a right-angle half pipe and an arc-shaped half pipe;

s3, placing the batten raw material into a punching machine, and punching and forming the partition board;

s4, cutting the plane of the right-angle half pipe to form a long through hole, welding a partition plate on the other side to form a partition structure, and welding middle connecting rods on the two side faces to form a framework supporting structure;

s5, attaching the arc-shaped half pipe to one end of the partition plate, ensuring that the side surfaces of the two ends are matched with the two ends of the right-angle half pipe, and clamping and positioning;

s6, welding the fit positions of the right-angle half pipe and the arc-shaped half pipe to form a long-strip welding line, and finishing the manufacture of the liquid collecting pipe;

s7, aligning one end of the flat tube to the plane of the liquid collecting tube, aligning the flat tube to the through hole of the long body, welding, and positioning the two ends;

s8, clamping the fins to the positions of the two sides of the flat tube from the surfaces of the two sides, fitting the surfaces of all the flat tubes, and clamping and positioning;

and S9, brazing and fixing the fin combination positions, then sequentially positioning all the fins, cleaning and detecting the welding positions, and finishing the manufacture of the heat exchanger after the welding positions are qualified.

2. The parallel flow heat exchanger with double rows of flat tubes as claimed in claim 1, wherein: the surface of one end of baffle (14) is equipped with right angle limit (2), the surface of right angle limit (2) is through welding strip (25) fixed welding in the side of right angle half-pipe (16).

3. The parallel flow heat exchanger with double rows of flat tubes as claimed in claim 1, wherein: the surface of the other end of the clapboard (14) is provided with an arc edge (21), and the surface of the arc edge (21) is tightly connected with the inner side surface of the arc half pipe (17).

4. The parallel flow heat exchanger with double rows of flat tubes as claimed in claim 1, wherein: the fins (13) are of a split structure and are fixedly welded on the surfaces of the two sides of the flat tubes (12) respectively.

5. The parallel flow heat exchanger with double rows of flat tubes as claimed in claim 1, wherein: one end of the fin (13) is provided with a split gap (22), and the split gap (22) is positioned in the middle of the surface of the flat tube (12).

6. The parallel flow heat exchanger with double rows of flat tubes as claimed in claim 1, wherein: the side surfaces of the fins (13) are punched to form strip openings (23), and the side surfaces of the strip openings (23) are fixedly connected to the surfaces of the flat tubes (12).

7. The parallel flow heat exchanger with double rows of flat tubes as claimed in claim 6, wherein: brazing layers (24) are arranged on the surfaces of the two sides of the strip-shaped opening (23), and the surfaces of the brazing layers (24) are fixedly welded to the surfaces of the two sides of the flat tube (12).

8. The parallel flow heat exchanger with double rows of flat tubes and the manufacturing method thereof as claimed in claim 1, wherein: the manufacturing method of the fin (13) comprises the following steps:

p1, selecting a stainless steel sheet as a raw material, and cutting the stainless steel sheet by using a plate shearing machine to form a fin blank;

p2, placing the fin blank into a punching machine die, and punching and cutting to form a long strip opening;

p3, polishing the punching and cutting position, and taking out burrs;

and P4, chamfering the corner positions of the fin blank to form round corners, and finishing the manufacturing of the fin.

9. The parallel flow heat exchanger with double rows of flat tubes and the manufacturing method thereof as claimed in claim 1, wherein: the fins (13) are symmetrically connected to the surface of the flat tube (12) at equal intervals, and the interval size is not smaller than the thickness of the fins.

Background

In the current social life and industrial production, the heat exchanger is very commonly used, and the adopted structural form and the heat exchange mode are different according to different industries and use requirements, wherein the parallel flow heat exchanger is a common one.

But among the parallel flow heat exchanger structure of current, it is direct to dock the flat pipe through the pipe more and welds, then connects the fin of wave line, will cause flat pipe and pipe surface bonding area less like this, causes the welding degree of difficulty great, and easy desoldering separation, stability is not enough to inside baffle structure also does not benefit to accurate positioning, and easy dislocation is interfered, and fin structure joint gap is great, and the heat transfer effect is poor, and product quality is low, is unfavorable for manufacturing production, remains to improve.

Disclosure of Invention

The invention aims to provide a parallel flow heat exchanger with double rows of flat tubes and a manufacturing method thereof, aiming at solving the problems in the prior art, the liquid collecting tube with a split structure is adopted, the liquid collecting tube can be subjected to combined welding after split processing, the partition plate can be accurately positioned, the stability is ensured, the interference in manufacturing is avoided, the welding position can be ensured to be a plane structure, the stability of flat tube combination is improved, finally, the split fin structure can be aligned to the flat tubes from two sides through punch forming, the resistance is reduced, the gap generated at the combination position is further avoided, the stable welding is facilitated, the convenience and the quality of manufacturing can be greatly improved, and the effect and the safety of production and use are ensured.

In order to solve the above problems, the present invention adopts the following technical solutions.

The parallel flow heat exchanger comprises a liquid collecting pipe, wherein a long through hole is formed in one side surface of the liquid collecting pipe, a flat pipe is fixedly welded on the surface of the long through hole, the surfaces of two ends of the flat pipe are fixedly welded on one side surface of the liquid collecting pipe, a fin is fixedly welded on the surface of the flat pipe, a partition plate is fixedly welded on the other side surface of the liquid collecting pipe, the surface of the partition plate is located at one side position of the long through hole, intermediate connecting rods are fixedly welded on the surfaces of two sides of the partition plate, the liquid collecting pipe comprises a right-angle half pipe and an arc-shaped half pipe, the surfaces of two ends of the right-angle half pipe are fixedly welded on the side surface of the arc-shaped half pipe, and long welding seams are formed on the surfaces of two sides of the right-angle half pipe and the arc-shaped half pipe;

the manufacturing method comprises the following steps:

s1, selecting a stainless steel sheet as a basic raw material, and cutting the stainless steel sheet according to design specifications to form a lath raw material;

s2, placing the batten raw materials into a punching machine, and respectively punching and forming by adopting a die to form a right-angle half pipe and an arc-shaped half pipe;

s3, placing the batten raw material into a punching machine, and punching and forming the partition board;

s4, cutting the plane of the right-angle half pipe to form a long through hole, welding a partition plate on the other side to form a partition structure, and welding middle connecting rods on the two side faces to form a framework supporting structure;

s5, attaching the arc-shaped half pipe to one end of the partition plate, ensuring that the side surfaces of the two ends are matched with the two ends of the right-angle half pipe, and clamping and positioning;

s6, welding the fit positions of the right-angle half pipe and the arc-shaped half pipe to form a long-strip welding line, and finishing the manufacture of the liquid collecting pipe;

s7, aligning one end of the flat tube to the plane of the liquid collecting tube, aligning the flat tube to the through hole of the long body, welding, and positioning the two ends;

s8, clamping the fins to the positions of the two sides of the flat tube from the surfaces of the two sides, fitting the surfaces of all the flat tubes, and clamping and positioning;

and S9, brazing and fixing the fin combination positions, then sequentially positioning all the fins, cleaning and detecting the welding positions, and finishing the manufacture of the heat exchanger after the welding positions are qualified.

Further, the one end surface of baffle is equipped with the right angle limit, the surface on right angle limit passes through welding strip fixed welding in the side of right angle half pipe, sets up the right angle limit through the baffle, can agree with the right angle half pipe, guarantees welding position's stability.

Further, the other end surface of baffle is equipped with the arc limit, the surface top on arc limit tightly connects in the inboard surface of arc semi-pipe, through arc limit top tight arc semi-pipe, guarantees the degree of agreeing with of composition surface, improves product quality.

Furthermore, the fin is the components of a whole that can function independently structure, and fixed weld in the both sides surface of flat pipe respectively, through adopting split type fin structure, can follow both sides counterpoint welding, avoids interfering, and is convenient high-efficient.

Furthermore, one end of each fin is provided with a split gap, the split gaps are located in the middle of the surface of each flat tube, and the fins on two sides are prevented from interfering with each other by the split gaps, so that welding positioning is facilitated.

Further, the side punching press of fin is formed with rectangular opening, rectangular open-ended side fixed connection sets up rectangular opening through the fin in the surface of flat pipe, can counterpoint the welding after the stamping forming, and is convenient stable.

Further, rectangular open-ended both sides surface all is equipped with the brazing layer, the fixed surface on brazing layer welds in the both sides surface of flat pipe, connects rectangular opening through the brazing layer, can guarantee welded stability, reduces the gap and guarantees the heat transfer effect.

Further, the manufacturing method of the fin comprises the following steps:

p1, selecting a stainless steel sheet as a raw material, and cutting the stainless steel sheet by using a plate shearing machine to form a fin blank;

p2, placing the fin blank into a punching machine die, and punching and cutting to form a long strip opening;

p3, polishing the punching and cutting position, and taking out burrs;

and P4, chamfering the corner positions of the fin blank to form round corners, and finishing the manufacturing of the fin.

Further, the fins are symmetrically connected to the surfaces of the flat tubes at equal intervals, and the interval size is not smaller than the thickness of the fins.

Compared with the prior art, the invention has the advantages that:

this scheme is through the liquid collecting pipe that adopts the components of a whole that can function independently structure, can divide the body to process the back and carry out the combination welding, does benefit to accurate positioning baffle, guarantees stability, avoids making to interfere to can guarantee that the welding position is planar structure, improve the stability that the flat tube combines, through the fin structure of stamping forming components of a whole that can function independently at last, can counterpoint to the flat tube from both sides respectively, reduce the resistance, and then avoid the joint position to produce the clearance, do benefit to stable welding.

(2) Set up the right angle limit through the baffle, can agree with the right angle half pipe, guarantee welding position's stability.

(3) The arc-shaped half pipe is tightly propped through the arc-shaped edge, so that the integrating degree of the joint surface is ensured, and the product quality is improved.

(4) Through adopting split type fin structure, can follow both sides counterpoint welding, avoid interfering, convenient high-efficient.

(5) Through setting up the components of a whole that can function independently clearance, avoid the fin mutual interference of both sides, do benefit to welding position.

(6) Set up rectangular opening through the fin, can counterpoint the welding after the stamping forming, convenient stability.

(7) Connecting rectangular opening through the brazing layer can guarantee welded stability, reduces the gap and guarantees the heat transfer effect.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of a separator weld of the present invention;

FIG. 3 is a schematic side view of the separator of the present invention;

FIG. 4 is a side schematic view of a fin weld of the present invention;

fig. 5 is a schematic view of a split structure of the fin of the present invention.

The reference numbers in the figures illustrate:

1 liquid collecting pipe, 11 long through holes, 12 flat pipes, 13 fins, 14 partition plates, 15 middle connecting rods, 16 right-angle half pipes, 17 arc half pipes, 18 long welding lines, 2 right-angle sides, 21 arc sides, 22 split gaps, 23 long openings, 24 brazing layers and 25 welding strips.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

Referring to fig. 1-5, a parallel flow heat exchanger with double rows of flat tubes and a manufacturing method thereof include a liquid collecting tube 1, and referring to fig. 1 and 2, a long through hole 11 is formed in one side surface of the liquid collecting tube 1, a flat tube 12 is fixedly welded to the surface of the long through hole 11, both end surfaces of the flat tube 12 are fixedly welded to one side surface of the liquid collecting tube 1, a fin 13 is fixedly welded to the surface of the flat tube 12, a partition plate 14 is fixedly welded to the other side surface of the liquid collecting tube 1, the surface of the partition plate 14 is located at one side position of the long through hole 11, intermediate connecting rods 15 are fixedly welded to both side surfaces of the partition plate 14, the liquid collecting tube 1 includes a right-angle half tube 16 and an arc-shaped half tube 17, both end surfaces of the right-angle half tube 16 are fixedly welded to the side surface of the arc-shaped half tube 17, and both side surfaces of the right-angle half tube 16 and the arc-shaped half tube 17 form a long welding seam 18;

the manufacturing method comprises the following steps:

s1, selecting a stainless steel sheet as a basic raw material, and cutting the stainless steel sheet according to design specifications to form a lath raw material;

s2, placing the batten raw materials into a punching machine, and respectively punching and forming by adopting a die to form a right-angle half pipe and an arc-shaped half pipe;

s3, placing the batten raw material into a punching machine, and punching and forming the partition board;

s4, cutting the plane of the right-angle half pipe to form a long through hole, welding a partition plate on the other side to form a partition structure, and welding middle connecting rods on the two side faces to form a framework supporting structure;

s5, attaching the arc-shaped half pipe to one end of the partition plate, ensuring that the side surfaces of the two ends are matched with the two ends of the right-angle half pipe, and clamping and positioning;

s6, welding the fit positions of the right-angle half pipe and the arc-shaped half pipe to form a long-strip welding line, and finishing the manufacture of the liquid collecting pipe;

s7, aligning one end of the flat tube to the plane of the liquid collecting tube, aligning the flat tube to the through hole of the long body, welding, and positioning the two ends;

s8, clamping the fins to the positions of the two sides of the flat tube from the surfaces of the two sides, fitting the surfaces of all the flat tubes, and clamping and positioning;

and S9, brazing and fixing the fin combination positions, then sequentially positioning all the fins, cleaning and detecting the welding positions, and finishing the manufacture of the heat exchanger after the welding positions are qualified.

Please refer to fig. 2 and 3, one end surface of the partition plate 14 is provided with a right-angle side 2, the surface of the right-angle side 2 is fixedly welded on the side surface of the right-angle half pipe 16 through a welding strip 25, the right-angle side 2 is arranged through the partition plate 14, the right-angle half pipe 16 can be conformed, the stability of the welding position is ensured, the other end surface of the partition plate 14 is provided with an arc-shaped side 21, the surface top of the arc-shaped side 21 is tightly connected to the inner side surface of the arc-shaped half pipe 17, the arc-shaped side 21 tightly pushes the arc-shaped half pipe 17, the conformity degree of the joint surface is ensured, and the product quality is improved.

Referring to fig. 4 and 5, the fins 13 are of a split structure and are respectively fixedly welded on the surfaces of the two sides of the flat tubes 12, alignment welding can be performed from the two sides by adopting the split fin structure, interference is avoided, convenience and high efficiency are achieved, a split gap 22 is formed at one end of each fin 13 and is located in the middle position of the surface of each flat tube 12, mutual interference of the fins on the two sides is avoided by arranging the split gap, welding positioning is facilitated, strip-shaped openings 23 are formed in the side surfaces of the fins 13 in a stamping mode, the side surfaces of the strip-shaped openings 23 are fixedly connected to the surfaces of the flat tubes 12, the strip-shaped openings 23 are formed in the fins 13, alignment welding can be performed after stamping forming, convenience and stability are achieved, brazing layers 24 are arranged on the surfaces of the two sides of the strip-shaped openings 23, the surfaces of the brazing layers 24 are fixedly welded on the surfaces of the two sides of the flat tubes 12, the brazing layers 24 are connected with the strip-shaped openings 23, and welding stability can be guaranteed, the gap is reduced to ensure the heat exchange effect.

The manufacturing method of the fin 13 includes the steps of:

p1, selecting a stainless steel sheet as a raw material, and cutting the stainless steel sheet by using a plate shearing machine to form a fin blank;

p2, placing the fin blank into a punching machine die, and punching and cutting to form a long strip opening;

p3, polishing the punching and cutting position, and taking out burrs;

and P4, chamfering the corner positions of the fin blank to form round corners, and finishing the manufacturing of the fin.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.