Resistance welding exhaust pipe

Abstract

The utility model relates to the technical field of metal processing, in particular to an electric resistance welding exhaust pipe which comprises an electric resistance welding exhaust pipe body, the electric resistance welding exhaust pipe body comprises a steel base and a copper pipe, the copper pipe is of an I-shaped structure with one end expanded, a first ventilation through hole is formed in the copper pipe in a penetrating mode, and a second ventilation through hole is formed in the steel base in a penetrating mode. An annular connecting groove is formed in the inner circumferential wall of the second ventilation through hole located in the steel base, the end, away from the expanding type, of the copper pipe is connected with the annular connecting groove in the steel base, and the connecting position of the steel base and the copper pipe is integrally welded. The structural design of the steel base is optimized, the copper pipe exposed below the steel base is changed into the integrated steel base, the product design structure can be met, the length of the copper pipe is reduced to 34.3 MM, the copper consumption is reduced by 11.3% on year-on-year basis, and the purpose of reducing cost is achieved on the premise that use of customers is not affected; and the copper pipe and the steel base are integrally welded, so that the leakage risk in the use process is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of metal processing, in particular to a resistance welding exhaust pipe. Background Art

[0002] Since the beginning of this year, with the severe changes in the market situation, the price of copper materials has exceeded the historical high in recent years. It is found that the copper tube materials of the exhaust pipes currently used account for a high proportion and the cost is relatively high, resulting in a tight supply of copper materials, which in turn affects the production cycle and delivery time of the exhaust pipes.

[0003] For example, the currently supplied exhaust pipe MC25390110 has an exposed copper tube after welding from a steel base to a copper tube. This has the advantages of good flow conductivity and high pressure resistance during operation. However, due to the high proportion of copper tube material and the high cost, it is highly dependent on copper materials. Utility Model Content

[0004] The purpose of the present utility model is to provide a resistance welding exhaust pipe to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A resistance welding exhaust pipe includes a resistance welding exhaust pipe body, the resistance welding exhaust pipe body includes a steel base and a copper tube, the copper tube is arranged in an I-shaped structure with one end expanded, a first ventilation hole is opened through the inside of the copper tube, a second ventilation hole is opened through the inside of the steel base, an annular connecting groove is opened on the inner circumferential wall of the second ventilation hole located inside the steel base, and the copper tube is connected to the annular connecting groove inside the steel base at the end away from the expansion.

[0007] As a preferred solution of the present invention, the connection between the steel seat and the copper tube is an integrated hot-melt connection.

[0008] As a preferred solution of the present invention, the outer circumferential wall of the copper tube located inside the steel seat abuts against the inner circumferential wall of the annular connecting groove inside the steel seat.

[0009] As a preferred solution of the present invention, the first ventilation hole inside the copper tube and the second ventilation hole at the connection with the steel seat have the same diameter.

[0010] As a preferred solution of the present invention, the length of the copper tube 2 is 34.3MM.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] In response to the problems raised in the background technology, this application optimizes the structural design of the steel base and replaces the copper tube exposed below the steel base with an integrated steel base. This can meet the product design structure and achieve the purpose of cost reduction without affecting customer use.

[0013] Without affecting customer use, the length of the copper tube was shortened to 34.3mm, and the copper consumption decreased by 11.3% year-on-year;

[0014] An annular connecting groove is provided on the inner circumferential wall of the second ventilation hole inside the steel base. The end of the copper tube away from the expansion is connected to the annular connecting groove inside the steel base. The connection between the steel base and the copper tube is an integrated hot-melt connection, which adopts built-in and integrated welding to prevent falling off. The improved structural process can reduce the risk of leakage during use.

[0015] The design of the steel seat has been optimized so that it can better cooperate with the copper tube, thereby reducing dependence on exposed copper tubes and lowering production costs. Secondly, by shortening the length of the copper tube, the cost of raw materials is further reduced. Finally, an annular connection groove is opened inside the steel seat, and the copper tube and the steel seat are welded together as one. This not only improves the firmness of the connection, but also effectively prevents the risk of leakage during use. The innovative structure and process design greatly improve the performance and service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the main view of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the steel seat of the utility model;

[0018] Figure 3 This is a schematic diagram of the integral copper tube of the utility model.

[0019] In the figure: 1, steel seat; 11, second ventilation hole; 111, annular connecting groove; 2, copper tube; 21, first ventilation hole. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the embodiments of the present invention.

[0021] Example

[0022] See also Figure 1-3The utility model provides a technical solution: a resistance welding exhaust pipe, including a resistance welding exhaust pipe body, the resistance welding exhaust pipe body includes a steel base 1 and a copper tube 2, the copper tube 2 is arranged in an I-shaped structure with one end expanded, a first ventilation hole 21 is opened through the inside of the copper tube 2, a second ventilation hole 11 is opened through the inside of the steel base 1, an annular connecting groove 111 is opened on the inner circumferential wall of the second ventilation hole 11 inside the steel base 1, and the copper tube 2 is connected to the annular connecting groove 111 inside the steel base 1 at one end away from the expansion; the connection between the steel base 1 and the copper tube 2 is an integrated hot-melt connection; the outer circumferential wall of the copper tube 2 inside the steel base 1 abuts against the inner circumferential wall of the annular connecting groove 111 inside the steel base 1; the first ventilation hole 21 inside the copper tube 2 and the second ventilation hole 11 at the connection of the steel base 1 have the same diameter; the length of the copper tube 2 is 34.3MM.

[0023] It should be noted that the currently supplied exhaust pipe MC25390110 has an exposed copper tube after welding the steel base and copper tube. The front tube is 43mm long, and the copper content is relatively high. In addition, the exposed tube ring is prone to falling off during the welding process, resulting in a high product defect rate and a high risk of leakage during use.

[0024] This application optimizes the structural design of the steel base 1 and replaces the copper tube 2 exposed below the steel base 1 with an integrated steel base 1, which can meet the product design structure and achieve the purpose of cost reduction without affecting customer use.

[0025] Furthermore, without affecting customer use, the length of copper tube 2 was shortened to 34.3mm, and the copper consumption decreased by 11.3% year-on-year;

[0026] Furthermore, an annular connecting groove 111 is provided on the inner circumferential wall of the second ventilation hole 11 inside the steel base 1. The end of the copper tube 2 away from the expansion is connected to the annular connecting groove 111 inside the steel base 1. The connection between the steel base 1 and the copper tube 2 is an integrated hot-melt connection, which adopts built-in and integrated welding to prevent falling off. The improved structural process can reduce the risk of leakage during use.

[0027] Furthermore, the design of the steel seat 1 is optimized so that it can better cooperate with the copper tube 2, thereby reducing the dependence on the exposed copper tube 2 and reducing the production cost. Secondly, by shortening the length of the copper tube 2, the cost of raw materials is further reduced. Finally, an annular connecting groove 111 is opened inside the steel seat 1, and the copper tube 2 and the steel seat 1 are welded as an integral whole. This not only improves the firmness of the connection, but also effectively prevents the risk of leakage during use. The innovative structure and process design greatly improve the performance and service life of the product.

[0028] The working process of this utility model:

[0029] During production, an annular connecting groove 111 is opened on the inner circumferential wall of the second ventilation hole 11 inside the steel base 1, and the end of the copper tube 2 away from the expansion is connected to the annular connecting groove 111 inside the steel base 1. The connection between the steel base 1 and the copper tube 2 is an integrated hot-melt connection, and the built-in and integrated welding is adopted to install the resistance welding exhaust pipe body on the equipment for use.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A resistance-welded exhaust pipe, comprising a resistance-welded exhaust pipe body, characterized in that: The resistance welding exhaust pipe body comprises a steel base (1) and a copper tube (2), wherein the copper tube (2) is arranged in an I-shaped structure with one end expanded, a first ventilation hole (21) is provided through the inside of the copper tube (2), a second ventilation hole (11) is provided through the inside of the steel base (1), an annular connecting groove (111) is provided on the inner circumferential wall of the second ventilation hole (11) inside the steel base (1), and the copper tube (2) is connected to the annular connecting groove (111) inside the steel base (1) at one end away from the expansion.

2. The resistance-welded exhaust pipe according to claim 1, characterized in that: The connection between the steel seat (1) and the copper tube (2) is an integrated hot-melt connection.

3. The resistance-welded exhaust pipe according to claim 1, characterized in that: The outer circumferential wall of the copper tube (2) located inside the steel seat (1) abuts against the inner circumferential wall of the annular connecting groove (111) inside the steel seat (1).

4. The resistance-welded exhaust pipe according to claim 1, characterized in that: The first ventilation hole (21) inside the copper tube (2) and the second ventilation hole (11) at the connection point of the steel seat (1) have the same diameter.

5. The resistance-welded exhaust pipe according to claim 1, characterized in that: The length of the copper tube (2) is 34.3MM.

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