Air conditioner branch pipe manufactured based on copper sheets

Abstract

The utility model discloses an air conditioner branch pipe manufactured on the basis of copper sheets, and aims to improve the technical performance of compression resistance, leakage prevention and the like of the air conditioner branch pipe. The air conditioner branch pipe manufactured based on the copper sheet comprises a three-way pipe fitting, three connecting pipes of the three-way pipe fitting are connected with a main pipe, a first branch pipe and a second branch pipe respectively, and the three-way pipe fitting comprises a main connecting pipe, a first branch connecting pipe and a second branch connecting pipe which are communicated with one another. The main connecting pipe, the first branch connecting pipe and the second branch connecting pipe are integrally manufactured and formed through copper sheets, a copper sheet body is arranged at the junction of the main connecting pipe, the first branch connecting pipe and the second branch connecting pipe, and the main connecting pipe, the first branch connecting pipe and the second branch connecting pipe are all formed by extending copper sheets.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning pipeline equipment, in particular to a multi-way pipe for air-conditioning manufactured based on copper sheets. Background Art

[0002] In the existing air-conditioning industry, the multi-way pipe formed by a three-way U-shaped pipe is usually welded by multiple pipes. One pipe is bent into a U shape, and the other pipe is welded to the bent U-shaped pipe. This design has many welding points, complex processes, the produced three-way U-shaped pipe is heavy, it is difficult to ensure its accuracy, and with multi-point welding, the labor cost is high, and it is easy to have missed welding. There are welding points inside the pipe, which affects the flow rate inside the pipe. Currently, there is also a three-way pipe fitting formed by extruding one pipe as disclosed in Chinese Utility Model Patent No. ZL202220517402.9. The three-way pipe fitting includes a first through pipe, a second through pipe, and a third through pipe. One end of the first through pipe is connected and communicated with one end of the second through pipe to form a U-shaped through pipe, and the other end is open. The third through pipe is arranged at the connection of the first through pipe and the second through pipe. This forming structure is based on one pipe and forms a U-shaped pipe and a third pipe by extruding from both ends or one end of the pipe towards the middle. This forming structure is formed by pipe bending and extrusion. During the process of pipe bending, not only the distance between the U-shaped pipes is limited by the minimum turning radius, but also fatigue cracks are likely to occur, resulting in refrigerant leakage. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a multi-way pipe for air-conditioning manufactured based on copper sheets to solve the defects and deficiencies of the prior art, so that the distance between the U-shaped pipes is no longer limited by the minimum turning radius, and fatigue cracks of the pipes are avoided.

[0004] To achieve the above purpose, the utility model provides a multi-way pipe for air-conditioning manufactured based on copper sheets, which includes a three-way pipe fitting. The three connecting pipes of the three-way pipe fitting are respectively connected to a main pipe, a first branch pipe, and a second branch pipe. The three connecting pipes of the three-way pipe fitting include a main connecting pipe that is interconnected, and a first branch connecting pipe and a second branch connecting pipe. The main connecting pipe, the first branch connecting pipe, and the second branch connecting pipe are integrally formed by a copper sheet. The junction of the main connecting pipe, the first branch connecting pipe, and the second branch connecting pipe is the copper sheet body. The main connecting pipe, the first branch connecting pipe, and the second branch connecting pipe are all formed by extending the copper sheet. Since the whole three-way pipe fitting of this multi-way pipe for air-conditioning manufactured based on copper sheets is made of one copper sheet, the three-way pipe fitting itself does not need to be welded, there is no bending and no fatigue cracks are generated. The main connecting pipe, the first branch connecting pipe, and the second branch connecting pipe form a crotch-shaped structure. The copper sheet body is equivalent to the crotch of the crotch-shaped structure. Compared with the traditional U-shaped turning structure, not only is the distance between the first branch connecting pipe and the second branch connecting pipe no longer limited by the minimum turning radius, but also fatigue cracks of the pipes are avoided, preventing leakage.

[0005] One end of the main connecting pipe is an open structure, and the other end is a copper sheet body. The outer side of the copper sheet body is an integral extension structure with the pipe wall of the main connecting pipe. The inner sides of the copper sheet body are respectively integral extension structures with the first branch connecting pipe and the second branch connecting pipe. The extension structure effectively ensures the integral performance of the main connecting pipe with the first branch connecting pipe and the second branch connecting pipe, and avoids fatigue breakage.

[0006] The main connecting pipe intersects with the first branch connecting pipe and the second branch connecting pipe at one end of the copper sheet body. This intersecting structure is more conducive to the uniform extension of the main connecting pipe and the copper sheet body to the first branch connecting pipe and the second branch connecting pipe, and improves the uniformity during the extension process.

[0007] The copper sheet described is a circular copper sheet. The diameter of the copper sheet is 55 - 182 mm, and the thickness is 1 - 1.6 mm. After the copper sheet is integrally formed, the diameter of the main connecting pipe is 9.5 - 47 mm, the diameter of the first branch connecting pipe is 9.5 - 45 mm, and the diameter of the second branch connecting pipe is 9.5 - 35 mm.

[0008] The diameter of the copper sheet is 55 mm, and the thickness is 1 mm. After the copper sheet is integrally formed, the diameter of the main connecting pipe is 9.5 mm, the diameter of the first branch connecting pipe is 9.5 mm, and the diameter of the second branch connecting pipe is 9.5 mm. Or the diameter of the copper sheet is 65 mm, and the thickness is 1 mm. After the copper sheet is integrally formed, the diameter of the main connecting pipe is 12.7 mm, the diameter of the first branch connecting pipe is 12.7 mm, and the diameter of the second branch connecting pipe is 12.7 mm.

[0009] The diameter of the copper sheet is 80 mm, and the thickness is 1.3 mm. After the copper sheet is integrally formed, the diameter of the main connecting pipe is 19 mm, the diameter of the first branch connecting pipe is 15 mm, and the diameter of the second branch connecting pipe is 15 mm. Or the diameter of the copper sheet is 90 mm, and the thickness is 1.3 mm. After the copper sheet is integrally formed, the diameter of the main connecting pipe is 25 mm, the diameter of the first branch connecting pipe is 19 mm, and the diameter of the second branch connecting pipe is 19 mm.

[0010] The diameter of the copper sheet is 120 mm, and the thickness is 1.6 mm. After the copper sheet is integrally formed, the diameter of the main connecting pipe is 34 mm, the diameter of the first branch connecting pipe is 25 mm, and the diameter of the second branch connecting pipe is 25 mm.

[0011] The diameter of the copper sheet is 150 mm, and the thickness is 1.6 mm. After the copper sheet is integrally formed, the diameter of the main connecting pipe is 39 mm, the diameter of the first branch connecting pipe is 35 mm, and the diameter of the second branch connecting pipe is 32 mm.

[0012] The copper sheet has a diameter of 182 mm and a thickness of 1.6 mm. After the copper sheet is integrally manufactured, the diameter of the main connecting pipe is 47 mm, the diameter of the first branch connecting pipe is 45 mm, and the diameter of the second branch connecting pipe is 35 mm.

[0013] The first branch connecting tube and the second branch connecting tube are formed by integrally extending from the outer side of the copper sheet body and the wall of the main connecting tube to form a part of the tube body, another part of the tube body of the first branch connecting tube is extended from the inner side of the copper sheet body to form the inner hole of the first branch connecting tube, and another part of the tube body of the second branch connecting tube is extended from the inner side of the copper sheet body to form the inner hole of the second branch connecting tube. The overall uniformity of the three-way pipe fitting is greatly improved by jointly extruding and extending inside and outside.

[0014] The copper sheet body is a planar structure, and the first branch connecting tube and the second branch connecting tube are perpendicular to the copper sheet body. The walls of the first branch connecting tube and the second branch connecting tube are not adhered to each other, thereby improving the straightness of the air conditioning branch pipes during connection and avoiding connection deviation.

[0015] A method for integrally manufacturing an air-conditioning branch pipe based on copper sheet manufacturing comprises the following steps:

[0016] Step 1: Get a round copper sheet;

[0017] Step 2: The copper sheet of step 1 is passed through a punch press and a hydraulic stretching machine to be stretched into a straight tube with a closed structure at one end and an open structure at the other end;

[0018] Step 3, putting the straight pipe into the mold of the hydraulic press, wherein the mold is provided with a main model pipe, a first branch model pipe, and a second branch model pipe, and a partition column is provided between the first branch model pipe and the second branch model pipe, and the partition column abuts against the closed structure, and under the action of the extrusion fluid of the hydraulic press, the closed structure cooperates with the straight pipe to extend from one pipe to form a first branch connection pipe and a second branch connection pipe, forming a three-way pipe fitting, at which time, one end of the first branch connection pipe of the three-way pipe fitting is the first closed structure, and one end of the second branch connection pipe is the second closed structure, and the straight pipe forms the main connection pipe after being extruded by the hydraulic press;

[0019] Step 4: Cut off the first closed structure and the second closed structure of the three-way pipe obtained in step 3 by a sawing machine, and then expand the first branch connecting pipe and the second branch connecting pipe by a hydraulic press;

[0020] Step 5. Connect the three-way pipe fitting obtained in step 4 to the main pipe by welding the main connecting pipe, connect the first branch connecting pipe by welding the first branch pipe, and connect the second branch connecting pipe by welding the second branch pipe to obtain the air conditioning branch pipe.

[0021] The width of the partition column determines the spacing between the first branch connecting pipe and the second branch connecting pipe, such that the spacing between the first branch connecting pipe and the second branch connecting pipe is not limited by the turning radius. Instead, the first branch connecting pipe and the second branch connecting pipe are extruded on both sides of the partition column by diameter, successively reducing the spacing between the first branch connecting pipe and the second branch connecting pipe, and expanding the minimum space where the air-conditioning manifold can be installed.

[0022] The hydraulic press extrudes a straight pipe to form a tee fitting under a pressure of 6 - 15 MPa, while the maximum pressure in actual central air-conditioning applications is 6 MPa. This means that the pressure above 6 MPa has been fully inspected during manufacturing, and the problem of tee leakage has been completely solved, further enhancing the safety and reliability of the use and installation of central air-conditioning.

[0023] Adopting the above technical solution, the beneficial effects of the present utility model are as follows:

[0024] 1. Since the air-conditioning manifold based on a copper sheet is made of a single copper sheet for the overall tee fitting, the tee fitting itself does not require welding, has no bends and does not generate fatigue cracks. The main connecting pipe, the first branch connecting pipe, and the second branch connecting pipe form a crotch-like structure, and the copper sheet body is equivalent to the crotch of the crotch-like structure. Compared with the traditional U-shaped turning structure, it is not only not limited by the minimum turning radius to shorten the spacing between the first branch connecting pipe and the second branch connecting pipe, but also avoids the occurrence of pipeline fatigue cracks and prevents leakage.

[0025] 2. The width of the partition column determines the spacing between the first branch connecting pipe and the second branch connecting pipe, such that the spacing between the first branch connecting pipe and the second branch connecting pipe is not limited by the turning radius of the U-shaped pipe. Instead, the first branch connecting pipe and the second branch connecting pipe are extruded on both sides of the partition column by diameter, successively reducing the spacing between the first branch connecting pipe and the second branch connecting pipe, and expanding the minimum space where the air-conditioning manifold can be installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0027] FIG. 1 is a front view structural schematic diagram of an air-conditioning manifold based on a copper sheet according to the present utility model;

[0028] FIG. 2 is a flow structural schematic diagram of an integrated manufacturing method of an air-conditioning manifold based on a copper sheet according to the present utility model;

[0029] Figure 3 is a schematic upward view of the three-way pipe fitting in the present utility model;

[0030] Figure 4 is a schematic downward view of the three-way pipe fitting in the present utility model;

[0031] Figure 5 is a schematic view of the installation structure of the mold of the hydraulic press and the straight pipe in the present utility model;

[0032] Figure 6 is a schematic view of the forming structure of the mold of the hydraulic press and the three-way pipe fitting in the present utility model. Detailed implementation manners

[0033] Next, in conjunction with the accompanying drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0034] As shown in Figures 1-6 a kind of air-conditioning manifold based on copper sheet manufacturing includes a three-way pipe fitting 1. The three connecting pipes of the three-way pipe fitting 1 are respectively connected to a main pipe 2, a first manifold 5, and a second manifold 4. The three connecting pipes of the three-way pipe fitting 1 include a main connecting pipe 7 that is interconnected, a first manifold connecting pipe 6, and a second manifold connecting pipe 3. The main connecting pipe 7, the first manifold connecting pipe 6, and the second manifold connecting pipe 3 are integrally formed by a copper sheet 12. The junction of the main connecting pipe 7, the first manifold connecting pipe 6, and the second manifold connecting pipe 3 is a copper sheet body 13. The main connecting pipe 7, the first manifold connecting pipe 6, and the second manifold connecting pipe 3 are all extended from the copper sheet 12. Of course, the copper sheet 12 can also be switched to other suitable metal materials, and the air-conditioning manifolds manufactured by other metal materials should also be within the technical protection scope of the present utility model.

[0035] As a structural preference, one end of the main connecting pipe 7 is an open structure, and the other end is a copper sheet body 13. The outer side of the copper sheet body 13 is an integral extension structure with the pipe wall of the main connecting pipe 7, and the inner side of the copper sheet body 13 is respectively an integral extension structure with the first manifold connecting pipe 6 and the second manifold connecting pipe 3. The main connecting pipe 7 intersects with the first manifold connecting pipe 6 and the second manifold connecting pipe 3 at one end of the copper sheet body 13. That is, the entire pipe bodies of the first manifold connecting pipe 6 and the second manifold connecting pipe 3 are formed by the inner and outer extensions of the pipe wall of the main connecting pipe 7 and the copper sheet body 13 under the action of a hydraulic press.

[0036] The copper sheet 12 is a circular copper sheet with a diameter of 55 to 182 mm and a thickness of 1 to 1.6 mm. After the copper sheet 12 is integrally formed, the main connecting pipe 7 has a diameter of 9.5 to 47 mm, the first branch connecting pipe 6 has a diameter of 9.5 to 45 mm, and the second branch connecting pipe 3 has a diameter of 9.5 to 35 mm.

[0037] As specific implementation plan 1: The diameter of the copper sheet is 55 mm, the thickness is 1 mm. After the copper sheet 12 is integrally formed, the main connecting pipe 7 has a diameter of 9.5 mm, the first branch connecting pipe 6 has a diameter of 9.5 mm, and the second branch connecting pipe 3 has a diameter of 9.5 mm.

[0038] As specific implementation plan 2: The diameter of the copper sheet is 65 mm, the thickness is 1 mm. After the copper sheet 12 is integrally formed, the main connecting pipe 7 has a diameter of 12.7 mm, the first branch connecting pipe 6 has a diameter of 12.7 mm, and the second branch connecting pipe 3 has a diameter of 12.7 mm.

[0039] As specific implementation plan 3: The diameter of the copper sheet is 80 mm, the thickness is 1.3 mm. After the copper sheet 12 is integrally formed, the main connecting pipe 7 has a diameter of 19 mm, the first branch connecting pipe 6 has a diameter of 15 mm, and the second branch connecting pipe 3 has a diameter of 15 mm.

[0040] As specific implementation plan 4: The diameter of the copper sheet is 90 mm, the thickness is 1.3 mm. After the copper sheet 12 is integrally formed, the main connecting pipe 7 has a diameter of 25 mm, the first branch connecting pipe 6 has a diameter of 19 mm, and the second branch connecting pipe 3 has a diameter of 19 mm.

[0041] As specific implementation plan 5: The diameter of the copper sheet is 120 mm, the thickness is 1.6 mm. After the copper sheet 12 is integrally formed, the main connecting pipe 7 has a diameter of 34 mm, the first branch connecting pipe 6 has a diameter of 25 mm, and the second branch connecting pipe 3 has a diameter of 25 mm.

[0042] As specific implementation plan 6: The diameter of the copper sheet is 150 mm, the thickness is 1.6 mm. After the copper sheet 12 is integrally formed, the main connecting pipe 7 has a diameter of 39 mm, the first branch connecting pipe 6 has a diameter of 35 mm, and the second branch connecting pipe 3 has a diameter of 32 mm.

[0043] As specific implementation plan 7: The diameter of the copper sheet is 182 mm, the thickness is 1.6 mm. After the copper sheet 12 is integrally formed, the main connecting pipe 7 has a diameter of 47 mm, the first branch connecting pipe 6 has a diameter of 45 mm, and the second branch connecting pipe 3 has a diameter of 35 mm.

[0044] In order to further improve the uniformity of the extended forming of the three-way pipe fitting 1, the first branch connecting tube 6 and the second branch connecting tube 3 are extended from the outer side of the copper sheet body 13 and the tube wall of the main connecting tube 7 to form a part of the tube body, and another part of the tube body of the first branch connecting tube 6 is extended from the inner side of the copper sheet body 13 to form the first branch connecting tube inner hole 14, and another part of the tube body of the second branch connecting tube 3 is extended from the inner side of the copper sheet body 13 to form the second branch connecting tube inner hole 15.

[0045] In order to ensure that the distance between the first branch connecting tube and the second branch connecting tube is no longer limited by the turning radius of the U-shaped pipe, the copper sheet body 13 is a planar structure, the first branch connecting tube 6 and the second branch connecting tube 3 are perpendicular to the copper sheet body 13, and the tube walls of the first branch connecting tube 6 and the second branch connecting tube 3 are not adhered to each other, which greatly reduces the distance between the first branch connecting tube 6 and the second branch connecting tube 3 and avoids the leakage problem caused by the most traditional welding connection between the first branch connecting tube 6 and the second branch connecting tube 3.

[0046] A method for integrally manufacturing an air-conditioning branch pipe based on copper sheet manufacturing comprises the following steps:

[0047] Step 1, obtaining a circular copper sheet 12;

[0048] Step 2: The copper sheet 12 of step 1 is passed through a punch press and a hydraulic stretching machine to be stretched into a straight tube 10 with a closed structure 11 at one end and an open structure at the other end;

[0049] Step 3, put the straight pipe 10 into the mold 17 of the hydraulic press, the mold 17 is provided with the main model pipe 4, the first branch model pipe 19, and the second branch model pipe 18, and a partition column 20 is provided between the first branch model pipe 19 and the second branch model pipe 18, and the partition column 20 abuts against the closed structure 11, and under the action of the extrusion fluid of the hydraulic press, the closed structure 11 cooperates with the straight pipe 10 to extend from one pipe to form the first branch connection pipe 6 and the second branch connection pipe 3, forming the three-way pipe fitting 1, at this time, one end of the first branch connection pipe 6 of the three-way pipe fitting 1 is the first closed structure 8, and one end of the second branch connection pipe 3 is the second closed structure 9, and the straight pipe 10 forms the main connection pipe 7 after being extruded by the hydraulic press;

[0050] Step 4: Cut off the first closed structure 8 and the second closed structure 9 from the three-way pipe fitting 1 obtained in step 3 by a sawing machine, and then expand the first branch connecting pipe 6 and the second branch connecting pipe 3 by a hydraulic press;

[0051] Step 5: Weld the three-way pipe fitting 1 obtained in Step 4 to the main pipe 2 through the main connecting pipe 7, weld the first branch connecting pipe 6 to the first branch pipe 5, and weld the second branch connecting pipe 3 to the second branch pipe 4 to obtain an air-conditioning manifold. The obtained air-conditioning manifold can continue to improve the surface performance of the air-conditioning manifold through processes such as deburring and pickling.

[0052] As a preferred method, the width of the partition column 20 determines the spacing between the first branch connecting pipe 6 and the second branch connecting pipe 3. The straight pipe 10 is extruded by a hydraulic press with a pressure of 6 - 15 MPa to form the three-way pipe fitting 1. Since the three-way pipe fitting of the present utility model is made by a 6 - 15 MPa hydroforming process of the hydraulic press, and the maximum pressure in the actual central air-conditioning application is 6 MPa, which is equivalent to a full inspection of pressures above 6 MPa, the problem of three-way leakage is completely solved, and the safety and reliability of the use and installation of the central air-conditioning are further improved.

[0053] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model without departing from the principle and purpose of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An air-conditioning manifold made of copper sheets, comprising a tee fitting (1), wherein three connecting pipes of the tee fitting (1) are respectively connected to a main pipe (2), a first manifold (5), and a second manifold (4), and it is characterized in that: The three connecting pipes of the three-way pipe fitting (1) include a main connecting pipe (7) that communicates with each other, a first branch connecting pipe (6), and a second branch connecting pipe (3). The main connecting pipe (7), the first branch connecting pipe (6), and the second branch connecting pipe (3) are integrally formed by a copper sheet (12). The junction of the main connecting pipe (7), the first branch connecting pipe (6), and the second branch connecting pipe (3) is the copper sheet body (13).

2. The air conditioner manifold made of copper sheets according to claim 1, wherein: One end of the main connecting pipe (7) is an open structure, and the other end is the copper sheet body (13). The outside of the copper sheet body (13) is an integral extension structure with the wall of the main connecting pipe (7), and the inside of the copper sheet body (13) is an integral extension structure with the first branch connecting pipe (6) and the second branch connecting pipe (3) respectively.

3. The air-conditioning manifold made based on copper sheets according to claim 2, wherein: The main connecting pipe (7) intersects with the first branch connecting pipe (6) and the second branch connecting pipe (3) at one end of the copper sheet body (13).

4. The air-conditioning manifold manufactured based on copper sheets according to claim 1, wherein: The copper sheet (12) is a circular copper sheet with a diameter of 55 - 182 mm and a thickness of 1 - 1.6 mm. After being integrally formed, the diameter of the main connecting pipe (7) is 9.5 - 47 mm, the diameter of the first branch connecting pipe (6) is 9.5 - 45 mm, and the diameter of the second branch connecting pipe (3) is 9.5 - 35 mm.

5. The refrigerant manifold for air conditioner manufactured based on copper sheet according to claim 4, wherein: The copper sheet has a diameter of 55 mm and a thickness of 1 mm. After the copper sheet (12) is integrally formed, the main connecting pipe (7) has a diameter of 9.5 mm, the first branch connecting pipe (6) has a diameter of 9.5 mm, and the second branch connecting pipe (3) has a diameter of 9.5 mm. Or the copper sheet has a diameter of 65 mm and a thickness of 1 mm. After the copper sheet (12) is integrally formed, the main connecting pipe (7) has a diameter of 12.7 mm, the first branch connecting pipe (6) has a diameter of 12.7 mm, and the second branch connecting pipe (3) has a diameter of 12.7 mm. Or the copper sheet has a diameter of 80 mm and a thickness of 1.3 mm. After the copper sheet (12) is integrally formed, the main connecting pipe (7) has a diameter of 19 mm, the first branch connecting pipe (6) has a diameter of 15 mm, and the second branch connecting pipe (3) has a diameter of 15 mm. Or the copper sheet has a diameter of 90 mm and a thickness of 1.3 mm. After the copper sheet (12) is integrally formed, the main connecting pipe (7) has a diameter of 25 mm, the first branch connecting pipe (6) has a diameter of 19 mm, and the second branch connecting pipe (3) has a diameter of 19 mm. Or the copper sheet has a diameter of 120 mm and a thickness of 1.6 mm. After the copper sheet (12) is integrally formed, the main connecting pipe (7) has a diameter of 34 mm, the first branch connecting pipe (6) has a diameter of 25 mm, and the second branch connecting pipe (3) has a diameter of 25 mm. Or the copper sheet has a diameter of 150 mm and a thickness of 1.6 mm. After the copper sheet (12) is integrally formed, the main connecting pipe (7) has a diameter of 39 mm, the first branch connecting pipe (6) has a diameter of 35 mm, and the second branch connecting pipe (3) has a diameter of 32 mm. Or the copper sheet has a diameter of 182 mm and a thickness of 1.6 mm. After the copper sheet (12) is integrally formed, the main connecting pipe (7) has a diameter of 47 mm, the first branch connecting pipe (6) has a diameter of 45 mm, and the second branch connecting pipe (3) has a diameter of 35 mm.

6. A split air duct for an air conditioner manufactured based on a copper sheet, characterized in that: The first branch connecting pipe (6) and the second branch connecting pipe (3) are formed by a part of the pipe body extending integrally from the outside of the copper sheet body (13) to the wall of the main connecting pipe (7). Another part of the pipe body of the first branch connecting pipe (6) is formed by the inner side of the copper sheet body (13) extending to form the inner hole (14) of the first branch connecting pipe. Another part of the pipe body of the second branch connecting pipe (3) is formed by the inner side of the copper sheet body (13) extending to form the inner hole (15) of the second branch connecting pipe.

7. The air conditioner manifold made of copper sheet according to claim 1, characterized in that: The copper sheet body (13) is a planar structure. The first branch connecting pipe (6) and the second branch connecting pipe (3) are both perpendicular to the copper sheet body (13), and the walls of the first branch connecting pipe (6) and the second branch connecting pipe (3) are not adhered to each other.

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