Welded structure of an air conditioning conduit

Abstract

The utility model belongs to air conditioning technical field, concretely relates to a kind of welding structure of air-conditioning guide pipe, including the first pipe and second pipe of metal material, the outer surface of first pipe or second pipe is provided with annular locating ring, the distance from the outer side of locating ring to the end surface of first pipe or second pipe is equal to the distance from the outer side of the shell of argon arc welding welding head to the center of the shell of argon arc welding welding head, after the end surface of first pipe and second pipe butt joint, the shell outer side of argon arc welding welding head is along locating ring outer side edge rotation welding a round to make first pipe and second pipe welded into integrated structure, advantage is: simple structure, the consistency of welding is good, structural strength is big, it is applicable to the welding connection structure of air-conditioning guide pipe.

Description

Technical Field

[0001] This utility model belongs to the field of air conditioning technology, and in particular relates to a welding structure for an air conditioning duct. Background Technology

[0002] The most common method for connecting traditional metal pipes is argon arc welding, which typically involves butt welding, such as... Figure 1 Typically, two pipes, 01 and 02, are first fixed with fixtures, then 03 is spot-welded for fixation, followed by a ring of argon arc welding. This welding technique has certain limitations: First, it is difficult to operate: before spot welding, the ends of the two pipes need to be aligned. If the two pipes are relatively long or heavy, it is difficult to align the ends even with fixtures. Moreover, the welding has high requirements for the ends of the two pipes, requiring no burrs, and the ends need to be flush and free of defects. Second, the welding environment is limited: after spot welding 03, argon arc welding is required. Before welding, the tungsten needle 04 must be aligned with the weld seam, and the base material is melted by electric discharge for welding. The alignment of the tungsten needle 04 requires constant adjustment and requires a spacious and well-lit space. However, some environments are not suitable for operation. When there are obstacles such as walls or pipes around, or when the lighting is dim, the welding quality cannot be guaranteed. Summary of the Invention

[0003] The purpose of this invention is to provide a welding structure for air conditioning ducts that is simple to operate, not limited by the scene, and has accurate welding position.

[0004] The purpose of this utility model is to solve the following problem:

[0005] A welding structure for an air conditioning duct includes a first pipe and a second pipe made of metal. An annular positioning ring is provided on the outer surface of the first pipe or the second pipe. The distance from the outer side of the positioning ring to one end face of the first pipe or the second pipe is equal to the distance from the outer side of the argon arc welding head shell to the center of the argon arc welding head shell. After the end faces of the first pipe and the second pipe are joined, the outer side of the argon arc welding head shell is rotated along the outer side of the positioning ring to weld the first pipe and the second pipe into an integral structure.

[0006] As a further optimization of the above technical solution, when the inner diameter of the first tube is equal to the outer diameter of the second tube, the positioning ring is set on the first tube. After the end of the second tube is inserted into the first tube, the outer side of the shell of the argon arc welding head is rotated and welded around the outer side of the positioning ring to make the first tube and the second tube welded into an integral structure.

[0007] As a further optimization of the above technical solution, when the inner diameter of the first pipe is equal to the inner diameter of the second pipe, the positioning ring is arranged on the first pipe or the second pipe. After the end faces of the first pipe and the second pipe are butted, the outer side surface of the shell of the argon arc welding head is welded for one circle while rotating along the outer side surface of the positioning ring, so that the first pipe and the second pipe are welded into an integrated structure.

[0008] As a further optimization of the above technical solution, the plane where the outer side surface of the positioning ring is located is perpendicular to the center line of the first pipe or the second pipe.

[0009] As a further optimization of the above technical solution, the positioning ring is fixed on the first pipe or the second pipe by means of welding connection.

[0010] As a further optimization of the above technical solution, the positioning ring is an inverted U-shaped structure directly extruded on the first pipe or the second pipe.

[0011] As a further optimization of the above technical solution, both the first pipe and the second pipe are made of stainless steel.

[0012] The positive effects of the present utility model compared with the prior art are:

[0013] 1. The present utility model provides an annular positioning ring on the outer surface of the first pipe or the second pipe, which enables accurate welding operation without a welder certificate, lowers the welding threshold, provides good welding consistency, and avoids the increased leakage risk caused by overburning.

[0014] 2. The present utility model has high welding accuracy, high welding efficiency, low production cost and high structural strength.

[0015] 3. The present utility model has a simple structure, good welding consistency and high structural strength, and is suitable for welded connection structures of air-conditioning ducts. Description of Drawings

[0016] Figure 1 is a schematic view of spot welding positioning after butt jointing of two pipes in the prior art.

[0017] Figure 2 is a sectional view of the present utility model when the pipe diameters of the first pipe and the second pipe are different.

[0018] Figure 3 is a sectional view of the present utility model when the pipe diameters of the first pipe and the second pipe are the same.

[0019] Figure 4 is a sectional view of the first pipe of the present utility model. Detailed Description

[0020] The present utility model is further described below with reference to the accompanying drawings through specific embodiments, see Figures 2-4 :

[0021] A welding structure for an air conditioner conduit, comprising a first pipe 10 and a second pipe 20 made of metal material, wherein an annular positioning ring 11 is provided on the outer surface of the first pipe 10 or the second pipe 20, a distance H1 from an outer side surface 12 of the positioning ring 11 to one end surface 13 of the first pipe 10 or the second pipe 20 is equal to a distance H2 from an outer edge 31 of a welding head housing 30 of argon arc welding to a center of the welding head housing 30 of argon arc welding, the center of the welding head housing 30 is the axial position of a tungsten electrode; after the end surfaces 13 of the first pipe 10 and the second pipe 20 are butted, the outer side surface 31 of the housing of the argon arc welding head 30 rotates along the outer side surface 12 of the positioning ring 11 while melting a welding position through electric discharge to achieve welding for one circle, so that the first pipe 10 and the second pipe 20 are welded into an integrated structure.

[0022] As a further optimization of the above technical solution, when an inner diameter R1 of the first pipe 10 is equal to an outer diameter R2 of the second pipe 20, the positioning ring 11 is provided on the first pipe 10, after an end of the second pipe 20 is inserted into the first pipe 10, the outer side surface 31 of the housing of the argon arc welding head 30 rotates along the outer side surface 12 of the positioning ring 11 while performing welding for one circle, so that the first pipe 10 and the second pipe 20 are welded into an integrated structure.

[0023] As a further optimization of the above technical solution, when the inner diameter R1 of the first pipe 10 is equal to the inner diameter R2 of the second pipe 20, the positioning ring 11 is provided on the first pipe 10 or the second pipe 20, after the end surfaces 13 of the first pipe 10 and the second pipe 20 are butted, the outer side surface 31 of the housing of the argon arc welding head 30 rotates along the outer side surface of the positioning ring 11 while performing welding for one circle, so that the first pipe 10 and the second pipe 20 are welded into an integrated structure.

[0024] As a further optimization of the above technical solution, a plane where the outer side surface 12 of the positioning ring 11 is located is perpendicular to a center line of the first pipe 10 or the second pipe 20.

[0025] As a further optimization of the above technical solution, the positioning ring 11 is fixed on the first pipe 10 or the second pipe 20 by means of welding connection.

[0026] As a further optimization of the above technical solution, the positioning ring 11 is an inverted U-shaped structure directly extruded on the first pipe 10 or the second pipe 20.

[0027] As a further optimization of the above technical solution, both the first pipe 10 and the second pipe 20 are made of stainless steel material.

[0028] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that simple substitutions or modifications can still be made to the technical solutions or technical features described in the foregoing embodiments, and these simple substitutions or modifications do not cause the essence of the corresponding technical solutions to deviate from the spirit and substance of the technical solutions of the embodiments of this utility model, and are still within the protection scope of this utility model.

Claims

1. A welded structure for an air conditioning duct, comprising a first pipe and a second pipe made of metal, characterized in that: An annular positioning ring is provided on the outer surface of the first pipe or the second pipe, the distance from the outer side surface of the positioning ring to one end surface of the first pipe or the second pipe is equal to the distance from the outer side surface of the welding head housing of the argon arc welding to the center of the welding head housing of the argon arc welding. After the end surfaces of the first pipe and the second pipe are butted, welding is performed for one circle while rotating along the outer side surface of the positioning ring by means of the outer side surface of the housing of the argon arc welding head, so that the first pipe and the second pipe are welded into an integrated structure.

2. The welding structure of an air conditioning duct according to claim 1, characterized in that: When the inner diameter of the first pipe is equal to the outer diameter of the second pipe, the positioning ring is arranged on the first pipe, and the end of the second pipe is inserted into the first pipe.

3. The welding structure of an air conditioning duct according to claim 1, characterized in that: When the inner diameter of the first pipe is equal to the inner diameter of the second pipe, the positioning ring is arranged on the first pipe or the second pipe.

4. The welding structure of an air conditioning duct according to claim 1, characterized in that: The plane where the outer side surface of the positioning ring is located is perpendicular to the central line of the first pipe or the second pipe.

5. The welding structure of an air conditioning duct according to claim 1, characterized in that: The positioning ring is fixed on the first pipe or the second pipe by means of welding connection.

6. The welding structure of an air conditioning duct according to claim 1, characterized in that: The positioning ring is an "Ω"-shaped structure directly extrusion-molded on the first pipe or the second pipe.

7. The welding structure of an air conditioning duct according to claim 1, characterized in that: Both the first pipe and the second pipe are made of stainless steel.

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