CN220416500U - Connecting pipe and air conditioning system - Google Patents

Abstract

The utility model relates to the technical field of air conditioning systems, in particular to a connecting pipe and an air conditioning system. The connecting pipe comprises a copper pipe, a transition pipe and an aluminum alloy pipe, wherein the copper pipe is connected with the aluminum alloy pipe through the transition pipe; the transition pipe is connected with the copper pipe through pipe joints respectively. The utility model provides a connecting pipe, its advantage lies in, through transition union coupling copper pipe and aluminum alloy pipe, the transition pipe adopts the rubber tube, through rubber transition pipe transition, produces electrochemical corrosion when avoiding the coolant liquid to flow through the aluminum alloy pipe, between copper pipe and the transition pipe, connect through nonrust steel pipe joint between transition pipe and the aluminum alloy pipe, nonrust steel pipe joint is established in the outside of transition pipe, with copper pipe and aluminum alloy pipe threaded connection respectively, replace welded connection with threaded connection, the junction that avoids welding performance variability to lead to seals inadequately.

Description

Connecting pipe and air conditioning system

Technical Field

The utility model relates to the technical field of air conditioning systems, in particular to a connecting pipe and an air conditioning system.

Background

Air conditioning has now become one of the indispensable appliances for people's daily life and work. Along with the increasing of the living standard of people, the requirements of users on the quality of the air conditioner are higher and higher, the market competition of the air conditioner is also more and more vigorous, each air conditioner manufacturer is continuously researching and improving the quality of the air conditioner, and meanwhile, because of the curing of the air conditioner technology, each manufacturer is striving to reduce the cost of the product.

Because of the high cost of copper pipes, most manufacturers change at least a portion of copper pipes to aluminum alloy pipes, so that the connecting pipes become pipes for interconnecting the copper pipes and the aluminum alloy pipes. For example, chinese patent No. CN203147095U relates to an energy-saving copper-aluminum tape glue air conditioner connecting pipe, which comprises a copper pipe and an aluminum alloy pipe, wherein both ends of the aluminum alloy pipe are welded with the copper pipe, and a hot melt glue sleeve with glue on the inner wall is arranged at the welding position of the aluminum alloy pipe and the copper pipe, and a heat shrinking pipe is tightly sleeved on the surfaces of the copper pipe and the aluminum alloy pipe. The energy-saving copper-aluminum tape glue type air conditioner connecting pipe also comprises a dustproof blocking cap for blocking pipe orifices at two ends. In order to reduce the cost, the copper pipe is replaced by the aluminum alloy pipe, the copper pipe is welded at two ends, two materials of the copper pipe and the aluminum alloy pipe are welded, the welding performance is more, the welding effect is poorer, the joint is not tightly sealed, and in addition, the electrochemical corrosion problem can be generated when the cooling liquid flows through the aluminum alloy pipe.

Disclosure of Invention

In view of the above, the present utility model aims to provide a connecting pipe, which connects a copper pipe and an aluminum alloy pipe through a transition pipe, wherein the transition pipe is a rubber pipe, the copper pipe and the transition pipe are connected through a stainless steel pipe joint, the stainless steel pipe joint is sleeved on the outer side of the transition pipe and is in threaded connection with the copper pipe and the aluminum alloy pipe respectively, so that the problems of poor welding effect, poor sealing of the connection part, electrochemical corrosion caused by the coolant flowing through the aluminum alloy pipe, and the like are solved.

In order to solve the above problems, the present utility model provides a connection pipe comprising:

the copper pipe is connected with the aluminum alloy pipe through the transition pipe;

the transition pipe is connected with the copper pipe through pipe joints respectively.

Further, the inner diameter of the transition pipe is the same as the outer diameters of the copper pipe and the aluminum alloy pipe;

the copper pipe and the aluminum alloy pipe are inserted into the transition pipe.

Further, the copper pipe and the aluminum alloy pipe are provided with external thread ends;

the pipe joint is provided with internal threads matched with the copper pipe and the aluminum alloy pipe.

Further, the pipe joint is sleeved outside the transition pipe.

Further, the other ends of the copper pipe and the aluminum alloy pipe, which are opposite to the external thread end, are bell mouth ends.

Further, copper nuts and aluminum alloy nuts are sleeved at the bell mouth ends of the copper pipe and the aluminum alloy pipe respectively.

Further, the transition pipe is a rubber pipe.

Further, the pipe joint is a stainless steel pipe joint.

An air conditioning system, comprising:

an indoor unit and an outdoor unit connected to each other by the connecting pipe according to any one of the above.

Further, the copper pipe is in threaded connection with the copper pipe of the air conditioning system through a copper nut;

the aluminum alloy pipe is in threaded connection with an aluminum alloy pipe of the air conditioning system through an aluminum alloy nut.

Compared with the prior art, the connecting pipe and the air conditioning system have the following advantages:

the technical scheme has the advantages that the copper pipe and the aluminum alloy pipe are connected through the transition pipe, the rubber pipe is adopted for the transition pipe, electrochemical corrosion is avoided when cooling liquid flows through the aluminum alloy pipe through the rubber transition pipe, the copper pipe and the transition pipe are connected through the stainless steel pipe joint, the stainless steel pipe joint is sleeved on the outer side of the transition pipe and is in threaded connection with the copper pipe and the aluminum alloy pipe respectively, the threaded connection replaces welded connection, and the joint sealing caused by the difference of welding performance is avoided.

Drawings

FIG. 1 is a front view of a connecting tube according to an embodiment of the present utility model;

fig. 2 is an enlarged view of a portion a of fig. 1 of a connection pipe according to an embodiment of the present utility model.

Reference numerals illustrate:

1-transition pipe, 2-pipe joint, 3-copper pipe, 4-copper nut, 5-aluminum alloy pipe, 6-aluminum alloy nut.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

The description of "first," "second," "upper," "lower," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or the number of technical features indicated. Thus, a feature defining "first", "second", "upper", "lower" may include at least one such feature, either explicitly or implicitly. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the combination between the embodiments, and all the technical solutions are within the scope of protection claimed by the present utility model.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

As shown in fig. 1 and 2, a connection pipe includes: copper pipe 3, transition pipe 1 and aluminum alloy pipe 5, copper pipe 3 with aluminum alloy pipe 5 passes through transition pipe 1 connects. The transition pipe 1 and the copper pipe 3 are connected through pipe joints 2 respectively, and the transition pipe 1 and the aluminum alloy pipe 5 are connected through pipe joints 2 respectively.

Copper pipe 3 and aluminum alloy pipe 5 are connected through transition pipe 1, and electrochemical corrosion is avoided when the coolant flows through aluminum alloy pipe 5, and between transition pipe 1 and aluminum alloy pipe 5, between transition pipe 1 and copper pipe 3 are respectively connected through coupling 2 to coupling 1 is connected and is replaced welded connection, and the joint that the welding performance difference caused is avoided is sealed not tightly.

Further, the inner diameter of the transition pipe 1 is the same as the outer diameters of the copper pipe 3 and the aluminum alloy pipe 5. The copper pipe 3 and the aluminum alloy pipe 5 are inserted into the transition pipe 1.

The outer diameters of the copper pipe 3 and the aluminum alloy pipe 5 are in common specifications such as phi 6/phi 9/phi 12/phi 16, and the inner diameter of the transition pipe 1 is required to be the same as the outer diameters of the copper pipe 3 and the aluminum alloy pipe 5 so as to avoid overlarge gaps.

Further, the copper tube 3 and the aluminum alloy tube 5 each have an externally threaded end. The pipe joint 2 has internal threads which mate with the copper pipe 3 and the aluminum alloy pipe 5.

The pipe joint 2 is connected with the copper pipe 3 and the aluminum alloy pipe 5 through threads respectively, and the outer diameters of two ends of the connecting pipe are required to be the same when the pipe is used.

Further, the pipe joint 2 is sleeved outside the transition pipe 1.

The pipe joint 2 is sleeved on the end face of the transition pipe 1, and the threaded ends of the copper pipe 3 and the aluminum alloy pipe 5 are inserted into the transition pipe 1.

Further, the other ends of the copper tube 3 and the aluminum alloy tube 5, which are opposite to the external thread end, are bell mouth ends.

Further, copper nuts 4 and aluminum alloy nuts 6 are respectively sleeved at the bell mouth ends of the copper pipe 3 and the aluminum alloy pipe 5.

The copper nut 4 and the aluminum alloy nut 6 are arranged at the bell mouth end of the connecting pipe, and after the copper pipe 3, the transition pipe 1, the aluminum alloy pipe 5 and the pipe joint 2 are arranged according to the structure, the copper pipe 3, the transition pipe 1 and the pipe joint 2 and the aluminum alloy pipe 5, the transition pipe 1 and the pipe joint 2 are in press fit by a special buckling press. The tight fit after compaction can stop refrigerant leakage, effectively reduces the leakage problem that poor welding brought.

Further, the transition pipe 1 is a rubber pipe.

The rubber does not react with refrigerant, such as R32/R410A/R22 and refrigerating oil, and has the characteristics of high temperature resistance and high pressure resistance.

Preferably, the pipe joint 2 is a stainless steel pipe joint.

The pipe joint 2 is prevented from being corroded and rusted.

An air conditioning system, comprising:

an indoor unit and an outdoor unit connected to each other by the connecting pipe according to any one of the above.

The indoor unit and the outdoor unit are connected through the connecting pipe, the copper pipe 3 and the aluminum alloy pipe 5 are connected through the transition pipe 1, the transition pipe 1 adopts a rubber pipe, electrochemical corrosion is avoided when cooling liquid flows through the aluminum alloy pipe 5 through rubber transition pipe transition, the copper pipe 3 and the transition pipe 1 are connected through a stainless steel pipe joint, the stainless steel pipe joint is sleeved on the outer side of the transition pipe 1, the copper pipe 3 and the aluminum alloy pipe 5 are respectively connected in a threaded mode, welding connection is replaced by threaded connection, and the phenomenon that the joint caused by the difference of welding performance is sealed untight is avoided.

Further, the copper pipe 3 is connected with copper pipe threads of an air conditioning system through a copper nut 4. The aluminum alloy pipe 5 is in threaded connection with an aluminum alloy pipe of an air conditioning system through an aluminum alloy nut 6.

The connecting pipe can be suitable for different refrigerant requirements, and can be a copper pipe or an aluminum alloy pipe according to the requirements by matching with the connecting pipe, so that the contact material of the connecting pipe is consistent. The copper pipe and the aluminum alloy pipe can be matched and used in such a way to avoid the problem of electrochemical corrosion caused by direct contact of the copper pipe and the aluminum alloy pipe. When in use, one end of the connecting pipe is connected with the inner machine, and the other end is connected with the outer machine, so that the air conditioner refrigerant circulation system is formed.

Although the present utility model is disclosed above, the present utility model is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model, and the scope of the utility model should be assessed accordingly to that of the appended claims.

Claims (10)

1. A connection tube, comprising:

the copper pipe is connected with the aluminum alloy pipe through the transition pipe;

the transition pipe is connected with the copper pipe through pipe joints respectively.

2. The connecting tube of claim 1, wherein the connecting tube is configured to connect to the connecting tube,

the inner diameter of the transition pipe is the same as the outer diameters of the copper pipe and the aluminum alloy pipe;

the copper pipe and the aluminum alloy pipe are inserted into the transition pipe.

3. The connecting tube of claim 2, wherein the connecting tube is configured to connect to the connecting tube,

the copper pipe and the aluminum alloy pipe are provided with external thread ends;

the pipe joint is provided with internal threads matched with the copper pipe and the aluminum alloy pipe.

4. A connecting tube according to claim 3, wherein,

the pipe joint is sleeved outside the transition pipe.

5. The connecting tube of claim 4, wherein the connecting tube is configured to connect to the connecting tube,

the other ends of the copper pipe and the aluminum alloy pipe, which are opposite to the external thread end, are bell mouth ends.

6. The connecting tube of claim 5, wherein the connecting tube is configured to connect to the connecting tube,

and a copper nut and an aluminum alloy nut are respectively sleeved at the bell mouth ends of the copper pipe and the aluminum alloy pipe.

7. The connecting tube of claim 1, wherein the connecting tube is configured to connect to the connecting tube,

the transition pipe is a rubber pipe.

8. The connecting tube of claim 1, wherein the connecting tube is configured to connect to the connecting tube,

the pipe joint is a stainless steel pipe joint.

9. An air conditioning system, comprising:

an indoor unit and an outdoor unit connected by a connection pipe according to any one of claims 1 to 8.

10. An air conditioning system according to claim 9, wherein,

the copper pipe is in threaded connection with the copper pipe of the air conditioning system through a copper nut;

the aluminum alloy pipe is in threaded connection with an aluminum alloy pipe of the air conditioning system through an aluminum alloy nut.