阅读说明：本技术 一种新型平行流换热器接管 (Novel parallel flow heat exchanger connecting pipe ) 是由 李小红 张平平 周盼盼 华路刚 于 2021-01-20 设计创作，主要内容包括：本发明公开了一种平行流换热器接管,其包括接管本体,所述接管本体的一端为与口琴管接口相配的扁口端,且该扁口端与口琴管接口密封焊接连接,所述接管本体的另一端与介质进/出液管密封连接。本发明有效解决了现有换热器接管焊接面积小、易泄漏的缺点。本发明设计的新型平行流换热器接管可以采用手工钎焊的方式与平行流冷凝器口琴管进行密封连接。(The invention discloses a parallel flow heat exchanger connecting pipe which comprises a connecting pipe body, wherein one end of the connecting pipe body is a flat port end matched with an harmonica pipe interface, the flat port end is connected with the harmonica pipe interface in a sealing and welding mode, and the other end of the connecting pipe body is connected with a medium liquid inlet/outlet pipe in a sealing mode. The invention effectively overcomes the defects of small welding area and easy leakage of the connecting pipe of the existing heat exchanger. The novel parallel flow heat exchanger connecting pipe designed by the invention can be hermetically connected with a parallel flow condenser harmonica pipe in a manual brazing mode.)

1. The parallel flow heat exchanger connecting pipe is characterized by comprising a connecting pipe body, wherein one end of the connecting pipe body is a flat port end matched with a mouth organ pipe interface, the flat port end is in sealing welding connection with the mouth organ pipe interface, and the other end of the connecting pipe body is in sealing connection with a medium liquid inlet/outlet pipe.

2. The parallel flow heat exchanger nozzle of claim 1, wherein: the connecting pipe body is a fixed-length aluminum pipe.

3. A method for processing a parallel flow heat exchanger connecting tube according to claim 1 or 2, characterized by comprising the following steps: firstly, flattening one end of a fixed length aluminum pipe through a punch or a stamping device, or flattening the end of an opposite-expansion hole through the punch or the stamping device after reaming one end of the fixed length aluminum pipe; and then, adding a sizing core with the same size as the mouth organ pipe joint into the flattening port, and then punching the flattening port by using a special-shaped punch to accurately punch and form the flat port end matched with the mouth organ pipe joint.

Technical Field

The invention belongs to the technical field of heat exchanger connecting pipes, and particularly relates to a novel parallel flow heat exchanger connecting pipe.

Background

The harmonica pipe has small inner diameter and single-hole section, greatly increases the heat exchange efficiency due to the increase of the heat exchange area, and is widely used in the industries of air conditioners and refrigerators. However, the conventional parallel flow heat exchanger connecting pipes are mainly connected by adopting the collecting pipe connecting pipes, a connecting port matched with the harmonica pipe is punched on the pipe wall by adopting a stamping die in the processing of the collecting pipe connecting pipes, and the collecting pipe connecting pipes and the harmonica pipe are welded and connected through the connecting port. The collecting main connecting pipe and the harmonica pipe only have the contact area of the pipe wall thickness, so the welding area is small, and the collecting main connecting pipe is processed by the pipe containing the welding flux. In the actual use process, a brazing furnace is almost used for welding, leakage is easy to generate, and the repair is difficult. In addition, one end of the collecting pipe connecting pipe in the structural form is connected with the medium liquid inlet/outlet pipe, and the other end of the collecting pipe connecting pipe is connected with the blocking cap in a welding mode to form a blind end, so that the leakage risk of the collecting pipe connecting pipe is increased to a certain extent.

Disclosure of Invention

Aiming at the defects of small welding area, easy leakage and difficult repair of welding in the process of welding the collecting pipe connecting pipe of the harmonica tube in the prior art, the invention provides the novel parallel flow heat exchanger connecting pipe which has large welding area, low welding leakage rate and easy repair.

The invention adopts the following technical scheme for solving the technical problems, and the parallel flow heat exchanger connecting pipe is characterized by comprising a connecting pipe body, wherein one end of the connecting pipe body is a flat port end matched with a mouth organ pipe interface, the flat port end is in sealed welding connection with the mouth organ pipe interface, and the other end of the connecting pipe body is in sealed connection with a medium liquid inlet/outlet pipe.

Further limited, the connecting pipe body is a fixed-length aluminum pipe.

The invention relates to a method for processing a connecting pipe of a parallel flow heat exchanger, which is characterized by comprising the following specific processes: firstly, flattening one end of a fixed length aluminum pipe through a punch or a stamping device, or flattening the end of an opposite-expansion hole through the punch or the stamping device after reaming one end of the fixed length aluminum pipe; and then, adding a sizing core with the same size as the mouth organ pipe joint into the flattening port, and then punching the flattening port by using a special-shaped punch to accurately punch and form the flat port end matched with the mouth organ pipe joint.

Compared with the prior art, the invention has the following beneficial effects:

1. the flat port end of the heat exchanger connecting pipe is connected with the harmonica pipe in a sealing and welding mode, the contact area of the flat port end and the harmonica pipe is large, the welding area is large, the welding leakage rate is low, and the defects that the contact welding area of the wall thickness of the collecting pipe connecting pipe and the harmonica pipe is small and leakage is easy in the prior art are effectively overcome;

2. the flat port end of the heat exchanger connecting pipe is connected with the harmonica pipe in a sealing and welding mode, the heat exchanger connecting pipe in the structural form can be even realized by manual brazing and is easy to repair, the production efficiency of products is improved to a certain extent, the production cost is reduced, and the technical barrier that the connection of the collecting pipe connecting pipe in the specific structural form and the harmonica pipe in the prior art is realized by entering a brazing furnace is effectively solved.

Drawings

FIG. 1 is a schematic structural diagram of a conventional heat exchanger adapter;

FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1;

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

FIG. 4 is a front view of the present invention;

FIG. 5 is a side view of the present invention;

fig. 6 is a top view of the present invention.

In the figure: 1-connecting pipe body and 2-flat opening end.

Detailed Description

The technical scheme of the invention is described in detail by combining the attached drawings, the parallel flow heat exchanger connecting pipe comprises a connecting pipe body 1, one end of the connecting pipe body 1 is a flat port end 2 matched with a harmonica pipe interface, the flat port end 2 is connected with the harmonica pipe interface in a sealing and welding mode, the other end of the connecting pipe body 1 is connected with a medium liquid inlet/outlet pipe in a sealing mode, and the connecting pipe body 1 is a fixed-length aluminum pipe.

The specific processing process of the parallel flow heat exchanger connecting pipe comprises the following steps: firstly, flattening one end of a fixed length aluminum pipe through a punch or a stamping device, or flattening the end of an opposite-expansion hole through the punch or the stamping device after reaming one end of the fixed length aluminum pipe; and then, adding a sizing core with the same size as the mouth organ pipe interface into the flattening port, and then precisely punching and forming the flattening port into a flat port end matched with the mouth organ pipe interface through a special-shaped punch.

The invention effectively overcomes the defects of small welding area and easy leakage of the connecting pipe of the existing heat exchanger. The novel parallel flow heat exchanger connecting pipe designed by the invention can be hermetically connected with a parallel flow condenser harmonica pipe in a manual brazing mode.

While there have been shown and described what are at present considered the fundamental principles of the invention, its essential features and advantages, the invention further resides in various changes and modifications which fall within the scope of the invention as claimed.