CN208871187U - A kind of anti-pull copper-aluminium joint - Google Patents

A kind of anti-pull copper-aluminium joint Download PDF

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Publication number
CN208871187U
CN208871187U CN201820804181.7U CN201820804181U CN208871187U CN 208871187 U CN208871187 U CN 208871187U CN 201820804181 U CN201820804181 U CN 201820804181U CN 208871187 U CN208871187 U CN 208871187U
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China
Prior art keywords
bulge loop
copper
internal diameter
outer diameter
pipe
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Active
Application number
CN201820804181.7U
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Chinese (zh)
Inventor
江周沛
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Jiangsu Jiahe Cold And Heating Equipment Engineering Co Ltd
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Jiangsu Jiahe Cold And Heating Equipment Engineering Co Ltd
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Priority to CN201820804181.7U priority Critical patent/CN208871187U/en
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Abstract

The utility model relates to the copper-aluminium joints on a kind of refrigeration piping, more particularly to a kind of anti-pull copper-aluminium joint, belong to technical field of refrigeration equipment, including copper pipe and aluminum pipe, it is characterized in that, the copper pipe End is equipped with the first bulge loop, and the internal diameter of the first bulge loop is greater than the internal diameter of copper pipe, and the outer diameter of the first bulge loop is less than the outer diameter of copper pipe;Aluminum pipe connecting pin is equipped with the second bulge loop, third bulge loop, the internal diameter of second bulge loop is slightly larger than the outer diameter of the first bulge loop, the outer diameter of third bulge loop is slightly smaller than the internal diameter of the first bulge loop, first bulge loop is arranged between the second bulge loop, third bulge loop, the first bulge loop, the second bulge loop, resistance spot welding connection between third bulge loop.Copper pipe End is designed as the first bulge loop by the utility model, the second bulge loop, third bulge loop are designed into aluminum pipe connecting pin, the connection that copper pipe and aluminum pipe are realized between second bulge loop, third bulge loop is set by the first bulge loop, and the contact area of connecting pin is big, and anti-pull performance is good.

Description

A kind of anti-pull copper-aluminium joint
Technical field
The utility model relates to the copper-aluminium joints on a kind of refrigeration piping, and in particular to a kind of anti-pull copper-aluminium joint, Belong to technical field of refrigeration equipment.
Background technique
For refrigeration equipments such as air-conditioning, refrigerators, refrigerant is the refrigerating medium for realizing heat exchange, it is in refrigeration piping It circulates, refrigeration effect is related to the flow of refrigerant.Refrigeration piping generally uses copper pipe, good refrigeration effect, but I State is the country of copper resource relative shortage, bauxite resource relative abundance, and in order to reduce cost, being using aluminum pipe on portions can Capable, but since copper pipe differs about 400 DEG C with aluminum pipe fusing point, it often needs in the junction of copper pipe and aluminum pipe using copper aluminium Connector realizes that the pipeline between different tubing connects.Generally required in refrigeration piping section it is smooth as far as possible, without unexpected undergauge or expansion The case where, therefore, existing copper-aluminium joint generally requires the internal diameter of joint structure equal or close with aluminum pipe internal diameter, copper-aluminium joint Outer diameter and aluminum pipe outer diameter it is essentially identical.Existing the copper-aluminium joint copper pipe and aluminum pipe socket joint type knot same or similar using outer diameter The connection of structure, copper and aluminium is by the way of hot extrusion, and in copper aluminium junction, tube wall is than relatively thin, and the bond strength of copper and aluminum pipe is not Height is easy to be torn, and separates copper pipe mutually with aluminum pipe section.
Utility model content
The purpose of the utility model is to provide a kind of anti-pull copper-aluminium joint, copper pipe End is designed as by the utility model The second bulge loop, third bulge loop are designed in aluminum pipe connecting pin by the first bulge loop, are arranged by the first bulge loop convex in the second bulge loop, third The connection of copper pipe and aluminum pipe is realized between ring, the contact area of connecting pin is big, and anti-pull performance is good.
The purpose of this utility model is achieved through the following technical solutions, a kind of anti-pull copper-aluminium joint, including copper Pipe and aluminum pipe, characterized in that the copper pipe End is equipped with the first bulge loop, and the internal diameter of the first bulge loop is greater than the internal diameter of copper pipe, and first The outer diameter of bulge loop is less than the outer diameter of copper pipe;Aluminum pipe connecting pin is equipped with the second bulge loop, third bulge loop, and the internal diameter of the second bulge loop is slightly larger In the outer diameter of the first bulge loop, the outer diameter of third bulge loop is slightly smaller than the internal diameter of the first bulge loop, and the setting of the first bulge loop is in the second bulge loop, the Between three bulge loops, the first bulge loop, the second bulge loop, resistance spot welding connection between third bulge loop.
Preferably, the internal diameter of the third bulge loop is equal to the internal diameter of aluminum pipe, and the internal diameter of third bulge loop is equal to the internal diameter of copper pipe.
Preferably, the outer diameter of second bulge loop is equal to the outer diameter of aluminum pipe.
Preferably, the outer diameter of the third bulge loop is greater than the outer diameter of aluminum pipe, copper pipe.
Preferably, first bulge loop, the second bulge loop, third bulge loop length are identical.
Compared with prior art, the utility model has the following beneficial effects:
First, copper pipe End is designed as the first bulge loop by the utility model, and the second bulge loop, third are designed in aluminum pipe connecting pin The connection that copper pipe and aluminum pipe are realized between the second bulge loop, third bulge loop, the contact of connecting pin are arranged in by the first bulge loop for bulge loop Area is big, and anti-pull performance is good.
Second, the internal diameter of third bulge loop is designed as the internal diameter of equivalent aluminum pipe by the utility model, and the internal diameter of third bulge loop is set It is calculated as the internal diameter of equivalent copper pipe, to guarantee the flatness inside refrigeration piping.
The outer diameter of third bulge loop is designed as being greater than the outer diameter of aluminum pipe, copper pipe, be connected by increasing by third, the utility model The thickness in portion, so that the mechanical strength of copper-aluminium joint is further enhanced.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the anti-pull copper-aluminium joint of the utility model (positioning mechanism is rectangular channel, rectangular block).
Specific embodiment
As shown in Figure 1, a kind of anti-pull copper-aluminium joint, including copper pipe 1 and aluminum pipe 2.
1 end of copper pipe is equipped with the first bulge loop 11, and the internal diameter of the first bulge loop 11 is greater than the internal diameter of copper pipe 1, the first bulge loop 11 Outer diameter is less than the outer diameter of copper pipe 1.
2 connecting pin of aluminum pipe is equipped with the second bulge loop 21, third bulge loop 22, and the internal diameter of the second bulge loop 21 is slightly larger than the first bulge loop 11 outer diameter, the outer diameter of third bulge loop 22 are slightly smaller than the internal diameter of the first bulge loop 11.
First bulge loop 11 is arranged between the second bulge loop 21, third bulge loop 22, the first bulge loop 11, the second bulge loop 21, third Resistance spot welding connects between bulge loop 22.
Preferably, the internal diameter of the third bulge loop 22 is equal to the internal diameter of aluminum pipe 2, and the internal diameter of third bulge loop 22 is equal to copper pipe 1 Internal diameter.
Preferably, the outer diameter of second bulge loop 21 is equal to the outer diameter of aluminum pipe 2.
Preferably, the outer diameter of the third bulge loop 22 is greater than the outer diameter of aluminum pipe 2, copper pipe 1.
Preferably, first bulge loop 11, the second bulge loop 21,22 length of third bulge loop are identical.
Copper pipe End is designed as the first bulge loop by the utility model, and the second bulge loop, third bulge loop are designed in aluminum pipe connecting pin, The connection that copper pipe and aluminum pipe are realized between second bulge loop, third bulge loop, the contact area of connecting pin are set by the first bulge loop Greatly, anti-pull performance is good.
The internal diameter of third bulge loop is designed as the internal diameter of equivalent aluminum pipe by the utility model, and the internal diameter of third bulge loop is designed as With the internal diameter of copper pipe, to guarantee the flatness inside refrigeration piping.
The outer diameter of third bulge loop is designed as being greater than the outer diameter of aluminum pipe, copper pipe by the utility model, by increasing interconnecting piece Thickness, so that the mechanical strength of copper-aluminium joint is further enhanced.

Claims (5)

1. a kind of anti-pull copper-aluminium joint, including copper pipe (1) and aluminum pipe (2), characterized in that copper pipe (1) end is equipped with First bulge loop (11), the internal diameter of the first bulge loop (11) are greater than the internal diameter of copper pipe (1), and the outer diameter of the first bulge loop (11) is less than copper pipe (1) outer diameter;Aluminum pipe (2) connecting pin is equipped with the second bulge loop (21), third bulge loop (22), and the internal diameter of the second bulge loop (21) is slightly larger Outer diameter in the first bulge loop (11), the outer diameter of third bulge loop (22) are slightly smaller than the internal diameter of the first bulge loop (11), the first bulge loop (11) Be arranged between the second bulge loop (21), third bulge loop (22), the first bulge loop (11), the second bulge loop (21), third bulge loop (22) it Between resistance spot welding connect.
2. the anti-pull copper-aluminium joint of one kind according to claim 1, characterized in that the internal diameter of the third bulge loop (22) Equal to the internal diameter of aluminum pipe (2), the internal diameter of third bulge loop (22) is equal to the internal diameter of copper pipe (1).
3. the anti-pull copper-aluminium joint of one kind according to claim 1 or 2, characterized in that second bulge loop (21) Outer diameter is equal to the outer diameter of aluminum pipe (2).
4. the anti-pull copper-aluminium joint of one kind according to claim 1 or 2, characterized in that the third bulge loop (22) Outer diameter is greater than the outer diameter of aluminum pipe (2), copper pipe (1).
5. the anti-pull copper-aluminium joint of one kind according to claim 1, characterized in that first bulge loop (11), second Bulge loop (21), third bulge loop (22) length are identical.
CN201820804181.7U 2018-05-28 2018-05-28 A kind of anti-pull copper-aluminium joint Active CN208871187U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820804181.7U CN208871187U (en) 2018-05-28 2018-05-28 A kind of anti-pull copper-aluminium joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820804181.7U CN208871187U (en) 2018-05-28 2018-05-28 A kind of anti-pull copper-aluminium joint

Publications (1)

Publication Number Publication Date
CN208871187U true CN208871187U (en) 2019-05-17

Family

ID=66461848

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820804181.7U Active CN208871187U (en) 2018-05-28 2018-05-28 A kind of anti-pull copper-aluminium joint

Country Status (1)

Country Link
CN (1) CN208871187U (en)

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