CN218763714U

CN218763714U - Air conditioner connecting pipe for indoor unit and outdoor unit

Info

Publication number: CN218763714U
Application number: CN202223061122.0U
Authority: CN
Inventors: 孙明连; 焦敬严; 王文华
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-03-28
Anticipated expiration: 2032-11-18

Abstract

The utility model relates to an air conditioner connecting pipe for indoor set and off-premises station, including the connecting tube monomer, the connecting tube monomer includes the aluminium system connecting pipe, and aluminium system connecting pipe one end forms the cloudy connecting portion of morning glory form and the positive connecting portion of one end formation taper in addition, and the aluminium system connecting pipe is equipped with the copper joint pipe in the one end at cloudy connecting portion place, and the copper joint pipe on the free cloudy connecting portion of a connecting tube is connected with the free positive connecting portion in close contact with of another connecting tube. The utility model discloses tip at aluminium system connecting pipe sets up the copper joint pipe, the tip of rethread pressurization and inflation aluminium system connecting pipe forms cloudy connecting portion, in-process copper joint pipe expands together with the connecting cap and the cladding outer peripheral face of the inner peripheral surface that forms the cloudy connecting portion of cladding and the locking cap of fixed connection cap, thereby can be relaxed with aluminium system connecting pipe and copper joint union coupling, simple process can ensure the excellent productivity ratio of product, excellent structural safety has, excellent price competitiveness has.

Description

Air conditioner connecting pipe for indoor unit and outdoor unit

Technical Field

The utility model relates to a technical field of air conditioner connecting pipe especially relates to an air conditioner connecting pipe that is used for indoor set and off-premises station.

Background

Generally, a connection pipe connecting an outdoor unit and an indoor unit of an air conditioner is made of a copper Cu material, but the connection pipe is made of an aluminum material which is cheaper than the copper material due to an increase in unit cost of the copper material.

Such connection of the connection pipe is performed by connecting a connection pipe having a female connection portion extending in a morning glory shape and another connection pipe having a male connection portion connected to the female connection portion. Even if the connection pipe is made of an aluminum material, the end portion connected to another connection pipe is made of a copper material due to corrosion or the like occurring when aluminum and the copper material are in direct contact. The above-described connection pipe is manufactured by forcibly joining a copper pipe to an end portion of an aluminum pipe by a joining process.

However, the connection between the aluminum pipe and the copper pipe of the connection pipe manufactured as described above is very weak, and there is a problem in that the connection pipe is easily broken or damaged by vibration or deformation in the process of connecting the outdoor unit and the indoor unit of the air conditioner. Meanwhile, a joining process performed to join an aluminum pipe and a copper pipe is rather complicated, and requires a lot of time, thus resulting in a problem that productivity of products is rather low.

Of course, there is a method in which the entire connecting pipe is made of an aluminum material and a method of connecting the connecting pipe to another connecting pipe by a separate joint is used, but this method has an economic problem in that the cost of the connecting pipe is excessively high due to the high unit cost of the joint used.

Disclosure of Invention

The utility model aims at solving the defects of the prior art and providing an air conditioner connecting pipe for an indoor unit and an outdoor unit.

The utility model discloses a realize above-mentioned purpose, adopt following technical scheme:

the air conditioner connecting pipe comprises a connecting pipe monomer, wherein the connecting pipe monomer comprises an aluminum connecting pipe, one end of the aluminum connecting pipe forms a morning glory-shaped female connecting part, the other end of the aluminum connecting pipe forms a cone-shaped male connecting part, a copper joint pipe is arranged at one end of the aluminum connecting pipe where the female connecting part is located, and the copper joint pipe on the female connecting part of one connecting pipe monomer is in close contact connection with the male connecting part of the other connecting pipe monomer.

The copper joint pipe comprises a connecting cap, a fixing cap and a joint part, wherein the connecting cap is coated on the inner circumferential surface of the female connection part, the fixing cap extends from the end part of the connecting cap to be coated on the outer circumferential surface of the female connection part and is stably fixed by virtue of the female connection part, and the joint part extends from the end part of the fixing cap to be coated on the outer wall of the aluminum connection pipe.

A plurality of compression bulges are arranged between the peripheral surface of the combination part and the outer wall of the aluminum connecting pipe, so that the aluminum connecting pipe is firmly connected and fixed.

The nut is arranged outside the female connecting part, the outer peripheral surface of the male connecting part forms a thread which is matched and installed with the nut, and the female connecting part and the male connecting part are connected in a fastening mode through the nut and the thread.

The utility model has the advantages that: the utility model discloses tip at aluminium system connecting pipe sets up the copper joint pipe, the tip of rethread pressurization and inflation aluminium system connecting pipe forms cloudy connecting portion, in-process copper joint pipe expands together with the connecting cap and the cladding outer peripheral face of the inner peripheral surface that forms the cloudy connecting portion of cladding and the locking cap of fixed connection cap, thereby can be relaxed with aluminium system connecting pipe and copper joint union coupling, moreover, the steam generator is simple in process, can ensure the excellent productivity of product, and can ensure that the structure of copper joint pipe cladding on the cloudy connecting portion of aluminium system connecting pipe has excellent structural safety as finished product air conditioner connecting pipe, different with the traditional method of connecting the connecting piping with the joining process, the material consumption is few, can ensure that the connecting piping as finished product has excellent price competitiveness.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a perspective view of the present invention;

FIG. 3 is a schematic view showing the connection of an aluminum connection pipe and a copper connection pipe;

FIG. 4 is a schematic view of step a in the preparation of the present invention;

FIG. 5 is a schematic view of step b of the present invention;

FIG. 6 is a schematic view of step c of the present invention;

FIG. 7 is a schematic view of step d of the present invention;

FIG. 8 is a schematic view of step e of the present invention;

in the figure: 1-connecting piping monomers; 2-a compression section;

10-aluminum connecting pipe; 11-a female connection; 12-male junction; 13-a nut; 14-screw thread;

21-a connecting cap; 22-a fixed cap; 23-a binding moiety; 24-a compression protrusion;

the following detailed description will be made with reference to the accompanying drawings in conjunction with embodiments of the present invention.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention. The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for purposes of illustration only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The invention will be further described with reference to the following drawings and examples:

an air conditioner connecting pipe for an indoor unit and an outdoor unit, as shown in fig. 1 to 3, comprises a connecting pipe unit 1, wherein the connecting pipe unit 1 comprises an aluminum connecting pipe 10, one end of the aluminum connecting pipe 10 forms a morning glory-shaped female connecting part 11, the other end of the aluminum connecting pipe forms a cone-shaped male connecting part 12, a copper joint pipe 20 is arranged at one end of the aluminum connecting pipe 10 where the female connecting part 11 is located, and the copper joint pipe 20 on the female connecting part 11 of one connecting pipe unit 1 is closely contacted and connected with the male connecting part 12 of the other connecting pipe unit 1.

The copper joint pipe 20 includes a connection cap 21, a fixing cap 22, and a joint portion 23, the connection cap 21 is coated on an inner circumferential surface of the female joint portion 11, the fixing cap 22 extends from an end portion of the connection cap 21 to be coated on an outer circumferential surface of the female joint portion 11 and stably fixes the connection cap 21 by the female joint portion 11, and the joint portion 23 extends from an end portion of the fixing cap 22 to be coated on an outer wall of the aluminum joint pipe 10.

A plurality of compression protrusions 24 are formed between the outer circumferential surface of the coupling portion 23 and the outer wall of the aluminum connection pipe 10, thereby firmly coupling and fixing the aluminum connection pipe 10. The connection portion 23 is compressed by the compression protrusion 24, and the aluminum connection pipe 10 is deformed in an uneven manner, so that the connection portion 23 is firmly connected to the aluminum connection pipe 10.

Generally, connecting pipes of an outdoor unit and an indoor unit of an air conditioner are made of copper materials, but as the cost of copper materials has increased greatly in recent years, connecting pipes are made of aluminum materials which are cheaper than copper materials. The end portions connected to the other connection pipes are preferably made of copper, even though most of the connection pipes are made of aluminum, for the reason that corrosion occurs when aluminum and copper are in direct contact, and the like.

Although the connection piping unit 1 for an air conditioner of the present invention is integrally made of aluminum, the female connection part 11 at the end of the aluminum connection pipe 10 is provided with the copper joint pipe 20, the female connection part 11 has the connection cap 21 formed on the inner peripheral surface, and the fixing cap 22 formed on the outer peripheral surface, so that, as shown in fig. 3, when the female connection part 11 of one connection piping unit 1 is connected to the male connection part 12 of another connection piping unit 1, the male connection part 12 is in direct contact with the copper connection cap 21, thereby preventing corrosion and the like caused by contact of copper and aluminum, and enabling the outdoor unit and the indoor unit of the air conditioner to be very stably connected through the connection piping unit 1. Compared with the conventional method of connecting a copper pipe to the end of an aluminum pipe by process bonding, the copper material consumed is very small, and therefore the unit cost of the finished connecting piping unit 1 can be remarkably reduced.

A nut 13 is provided outside the female connector 11, a screw 14 fitted to the nut 13 is formed on the outer peripheral surface of the male connector 12, and the female connector 11 and the male connector 12 are fastened and connected by the nut 13 and the screw 14.

Since the nut 13 is provided in the fixing cap 22 covering the female joint 11, the female joint 11 can be easily connected, and thus, a complicated process such as conventional joining (welding) of the ends of the copper pipe and the aluminum pipe is not required, and excellent productivity of the finished connection pipe unit 1 can be ensured.

Further, in the conventional connecting pipe, a portion where the aluminum pipe and the copper pipe are connected is very fragile, and thus the connected portion is easily torn, broken or damaged by deformation such as impact or bending in a process of connecting the connecting pipes to each other. The connection cap 21 and the fixing cap 22 cover the female connection part 11 and simultaneously perform a firm connection, so that structural weak parts in the conventional art do not occur, and thus problems caused by the process coupling can be naturally solved, thereby ensuring excellent structural safety of the finished connection piping unit 1.

The manufacturing method of the air conditioner connecting pipe for the indoor unit and the outdoor unit comprises the following steps:

a. cutting:

cutting the aluminum pipe into a certain length to manufacture an aluminum connection pipe 10, as shown in fig. 4;

b. the processing steps are as follows:

cutting a copper pipe to form a copper joint pipe 20, wherein the inner diameter of the copper joint pipe 20 is equal to or larger than the outer diameter of the aluminum joint pipe 10, and an extension piece 25 bent and extended toward the center is formed at one end of the copper joint pipe 20, as shown in fig. 5;

c. a configuration step:

inserting one end of the aluminum connection pipe 10 into the copper connection pipe 20, and covering the end of the aluminum connection pipe 10 with the extension piece 25 of the copper connection pipe 20, as shown in fig. 6;

d. a compression step:

several compression protrusions 24 are pressed at the joint of the aluminum connecting pipe 10 and the copper joint pipe 20 by the external compression part 2, so that the copper joint pipe 20 is firmly fixed on the aluminum connecting pipe 10, as shown in fig. 7;

e. a forming step:

the female connection part 11 is formed by pressure-expanding one end of the aluminum connection pipe 10 in a morning glory shape, the copper joint pipe 20 is pressurized and expanded together, and the extension piece 25 of the copper joint pipe 20 is molded into the connection cap 21 in close contact with the inner peripheral surface of the female connection part 11 and the fixing cap 22 in close contact with the outer peripheral surface of the female connection part 11, as shown in fig. 8.

The utility model discloses tip at aluminium system connecting pipe sets up copper joint pipe, the reentrant connecting portion of rethread pressurization and inflation aluminium system connecting pipe's tip, in-process copper joint pipe expands together with the connection cap and the cladding outer peripheral face of the inner peripheral surface that forms cladding cloudy connecting portion and the locking cap of fixed connection cap, thereby can be relaxed with aluminium system connecting pipe and copper joint union coupling, moreover, the steam generator is simple in process, can ensure the excellent productivity ratio of product, and can ensure that the structure of copper joint pipe cladding on the cloudy connecting portion of aluminium system connecting pipe has excellent structural safety as finished product air conditioner connecting pipe, different with the traditional method of being connected the connecting tubing with the joining process, the material consumption is few, can ensure that the connecting tubing as finished product has excellent price competitiveness.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and various improvements made by the method concept and technical solution of the present invention or directly applied to other occasions without improvement are all within the protection scope of the present invention.

Claims

1. The air conditioner connecting pipe for the indoor unit and the outdoor unit is characterized by comprising a connecting pipe single body (1), wherein the connecting pipe single body (1) comprises an aluminum connecting pipe (10), one end of the aluminum connecting pipe (10) forms a morning glory-shaped female connecting part (11) and the other end of the aluminum connecting pipe forms a conical male connecting part (12), a copper joint pipe (20) is arranged at one end of the aluminum connecting pipe (10) where the female connecting part (11) is located, and the copper joint pipe (20) on the female connecting part (11) of one connecting pipe single body (1) is in close contact connection with the male connecting part (12) of the other connecting pipe single body (1).

2. The air-conditioning connecting pipe for indoor and outdoor units of claim 1, wherein the copper joint pipe (20) comprises a connecting cap (21), a fixing cap (22) and a joint part (23), the connecting cap (21) is coated on the inner circumferential surface of the female joint part (11), the fixing cap (22) extends from the end of the connecting cap (21) to be coated on the outer circumferential surface of the female joint part (11) and is stably fixed by the female joint part (11), and the joint part (23) extends from the end of the fixing cap (22) to be coated on the outer wall of the aluminum connecting pipe (10).

3. The connecting pipe for an air conditioner of indoor unit and outdoor unit as claimed in claim 2, wherein a plurality of compression protrusions (24) are formed between the outer circumference of the combining part (23) and the outer wall of the aluminum connecting pipe (10) so as to be firmly connected and fixed to the aluminum connecting pipe (10).

4. An air-conditioning connecting pipe for an indoor unit and an outdoor unit according to claim 3, wherein a nut (13) is provided outside the female connecting portion (11), a screw (14) fitted to the nut (13) is formed on an outer circumferential surface of the male connecting portion (12), and the nut (13) and the screw (14) passing through the female connecting portion (11) and the male connecting portion (12) are fastened.