Corrosion-resistant copper-aluminum pipe for refrigerating system

Abstract

The utility model relates to the technical field of DC modules, in particular to a corrosion-resistant copper-aluminum pipe for a refrigerating system, which comprises a copper pipe and an aluminum pipe, one end of the copper pipe is connected with one end of the aluminum pipe, a reinforcing connection mechanism is arranged on the inner side of the copper pipe, and a fastening connection mechanism is arranged on the outer side of the copper pipe; the reinforcing connecting mechanism comprises a brazing filler metal layer and a reinforcing pipe. The connecting structure has the beneficial effects that the reinforcing connecting mechanism is arranged on the inner side of the joint between the copper pipe and the aluminum pipe, so that the positioning column is fixed on the outer side of the reinforcing pipe through the connecting plate, and the copper pipe and the aluminum pipe are positioned and connected through the first positioning hole and the second positioning hole; relative rotation and shaking between the copper pipe and the aluminum pipe are avoided, the connection stability between the copper pipe and the aluminum pipe is improved, and refrigeration leakage caused by gaps is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to DC module technical field especially relates to a kind of corrosion-resistant copper-aluminum pipe for refrigeration system. BACKGROUND

[0002] The heat exchanger used in air conditioning system needs to input and output refrigerant by inlet (liquid) connector and outlet (gas) connector, so that the refrigerant forms a cycle in the system and plays a role of heat exchange. With the continuous rise of copper material price and the increasing requirement of users for the performance of air conditioning system, aluminum microchannel heat exchanger gradually becomes a development trend.

[0003] For example, the prior art Chinese patent publication "CN208204242U" provides a high-efficiency fluid transmission air conditioner copper-aluminum pipe, which includes a copper pipe and an aluminum pipe. The pipe diameter and wall thickness of the copper pipe and the aluminum pipe are consistent. The end of the aluminum pipe is provided with a tenon joint embedded in the copper pipe. The outer diameter of the tenon joint is smaller than the outer diameter of the aluminum pipe body. The front end of the tenon joint is a tapered surface structure that gradually decreases towards the side of the copper pipe. The inner wall of the end of the copper pipe near the aluminum pipe is provided with a matching cavity that matches the structure of the tenon joint. The tenon joint and the matching cavity are welded. The inner walls at the joint of the copper pipe and the aluminum pipe are provided with embedded grooves, and the embedded grooves are embedded with inner connecting rings.

[0004] The inner diameter of the inner connecting ring of the device is consistent with the inner diameters of the copper pipe and the aluminum pipe. The inner connecting ring is welded at the embedded groove, with high connection strength. The inner wall at the joint is smooth, the flow rate of the refrigerant is stable, and the transmission of the refrigerant is efficient.

[0005] The existing corrosion-resistant copper-aluminum pipe for refrigeration system has unstable connection between the copper pipe and the aluminum pipe, which is prone to relative rotation and gap, resulting in refrigeration leakage. Moreover, the gap at the external joint between the copper pipe and the aluminum pipe is prone to corrosion, which leads to corrosion and gap between the copper pipe and the aluminum pipe, and lack of corrosion resistance.

[0006] Therefore, a corrosion-resistant copper-aluminum pipe for refrigeration system is proposed. INVENTION CONTENTS

[0007] The utility model aims at solving the problem of unstable connection between the copper pipe and the aluminum pipe in the prior art, which is prone to relative rotation and gap, resulting in refrigeration leakage. A corrosion-resistant copper-aluminum pipe for refrigeration system is proposed.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0009] The utility model provides a kind of corrosion-resistant copper-aluminum pipe for refrigeration system, including copper pipe and aluminium pipe, the one end of the copper pipe is connected with the one end of the aluminium pipe, and the inside is provided with reinforcing connection mechanism, and its outside is provided with fastening connection mechanism;The reinforcing connection mechanism includes solder layer and reinforcing pipe, the solder layer is welded between the copper pipe and the aluminium pipe, the reinforcing pipe is sleeved in the inside between the copper pipe and the aluminium pipe;The fastening connection mechanism includes fastening ring and heat shrink tube, the fastening ring is fastened to the outside surface of the copper pipe and the aluminium pipe, and the heat shrink tube is wrapped outside the fastening ring and the connecting place of the copper pipe and the aluminium pipe.

[0010] Further, the connecting end of the copper pipe is provided with a first positioning hole, and the connecting end of the aluminium pipe is provided with a second positioning hole.

[0011] Further, the first positioning hole and the second positioning hole are aligned with each other, the reinforcing pipe is fixed with a connecting plate on the outside, and the connecting plate is fixed with positioning columns on both sides of the surface, and the positioning columns are respectively inserted into the first positioning hole and the second positioning hole.

[0012] Further, the connecting plate is located between the copper pipe and the aluminium pipe and wrapped inside the solder layer, and the positioning columns are horizontally arranged.

[0013] Further, the inner surface of the reinforcing pipe is bonded with a glass fiber sleeve, the outer surface of the reinforcing pipe is bonded with a first sealing sleeve, and the first sealing sleeve is tightly attached to the inner surface of the connecting place of the copper pipe and the aluminium pipe.

[0014] Further, the outside of the connecting place between the copper pipe and the aluminium pipe is wrapped with a second sealing sleeve, the outer surface of the second sealing sleeve is bonded with a corrosion-resistant sleeve, and the fastening ring is fastened to the outside of the corrosion-resistant sleeve.

[0015] Further, a reinforcing rod is connected between the two fastening rings, and the reinforcing rod is located outside the connecting place between the copper pipe and the aluminium pipe and attached to the outside of the corrosion-resistant sleeve.

[0016] The corrosion-resistant copper-aluminum pipe for refrigeration system has the beneficial effects that:

[0017] 1. The utility model discloses a reinforcing connection mechanism is arranged on the inside of the connecting place between the copper pipe and the aluminium pipe, so that the positioning columns are fixed on the outside of the reinforcing pipe through the connecting plate, and the connecting between the copper pipe and the aluminium pipe is positioned and connected through the first positioning hole and the second positioning hole, to avoid relative rotation and shaking between the copper pipe and the aluminium pipe, improve the stability of the connection between the copper pipe and the aluminium pipe, and avoid the gap to cause refrigeration leakage.

[0018] 2. The utility model discloses a second sealing sleeve and corrosion -resistant cover are set to the outside between copper pipe and aluminium pipe, and set fastening ring and reinforcing rod to the outside of corrosion -resistant cover, can therefore carry out corrosion -resistant protection to the outside of the connecting place between aluminium pipe and copper pipe, and improve the connecting fastening, keep the connecting fastening degree between copper pipe and aluminium pipe. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the whole structure schematic diagram of the utility model;

[0020] Figure 2 It is the fastening ring part schematic diagram of the utility model; Figure 1

[0021] Figure 3 It is the corrosion -resistant cover part schematic diagram of the utility model; Figure 1

[0022] Figure 4 It is the filler layer part schematic diagram of the utility model; Figure 1

[0023] Figure 5 It is the first positioning hole part schematic diagram of the utility model; Figure 1

[0024] Figure 6 It is the second positioning hole part schematic diagram of the utility model; Figure 1

[0025] Figure 7 It is the reinforcing pipe and positioning column part schematic diagram of the utility model. Figure 1 In the drawing: 1, copper pipe; 2, heat shrink tube; 3, aluminium pipe; 4, fastening ring; 5, corrosion -resistant cover; 6, reinforcing rod; 7, second sealing sleeve; 8, filler layer; 9, first positioning hole; 10, second positioning hole; 11, positioning column; 12, connecting plate; 13, first sealing sleeve; 14, reinforcing pipe; 15, glass fiber cover.

[0026] DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0028] Embodiment 1

[0029] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and​​​​​​Figure 7 The corrosion-resistant copper-aluminum pipe for refrigeration system shown in the figure comprises a copper pipe 1 and an aluminum pipe 3, the copper pipe 1 is connected with one end of the aluminum pipe 3, and a reinforcing connecting mechanism is arranged on the inner side, and a fastening connecting mechanism is arranged on the outer side.

[0030] The reinforcing connecting mechanism comprises a solder layer 8 and a reinforcing pipe 14, the solder layer 8 is welded and connected between the copper pipe 1 and the aluminum pipe 3, and the reinforcing pipe 14 is sleeved on the inner side between the copper pipe 1 and the aluminum pipe 3.

[0031] The fastening connecting mechanism comprises a fastening ring 4 and a heat shrink tube 2, the fastening ring 4 is fastened and connected on the outer side surface of the copper pipe 1 and the aluminum pipe 3, and the heat shrink tube 2 is wrapped on the outer side of the connection part of the fastening ring 4 and the copper pipe 1 and the aluminum pipe 3.

[0032] The connecting end of the copper pipe 1 is provided with a first positioning hole 9, and the connecting end of the aluminum pipe 3 is provided with a second positioning hole 10.

[0033] The first positioning hole 9 and the second positioning hole 10 are aligned with each other, the outer side of the reinforcing pipe 14 is fixedly provided with a connecting plate 12, the surface of the connecting plate 12 is fixedly provided with positioning columns 11 on both sides, and the positioning columns 11 are respectively inserted into the first positioning hole 9 and the second positioning hole 10.

[0034] The connecting plate 12 is located between the copper pipe 1 and the aluminum pipe 3 and wrapped in the inside of the solder layer 8, and the positioning columns 11 are horizontally arranged.

[0035] The inner surface of the reinforcing pipe 14 is bonded with a glass fiber sleeve 15, the outer surface of the reinforcing pipe 14 is bonded with a first sealing sleeve 13, and the first sealing sleeve 13 is tightly attached to the inner surface of the connection part of the copper pipe 1 and the aluminum pipe 3.

[0036] The positioning columns 11 are fixed on the outer side of the reinforcing pipe 14 through the connecting plate 12, and the connection between the copper pipe 1 and the aluminum pipe 3 is positioned and connected through the first positioning hole 9 and the second positioning hole 10, so that the relative rotation and shaking between the copper pipe 1 and the aluminum pipe 3 are avoided, the stability of the connection between the copper pipe 1 and the aluminum pipe 3 is improved, and the gap leading to refrigeration leakage is avoided.

[0037] Embodiment 2

[0038] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , the corrosion-resistant copper-aluminum pipe for refrigeration system shown in the figure comprises a copper pipe 1 and an aluminum pipe 3, the copper pipe 1 is connected with one end of the aluminum pipe 3, and a reinforcing connecting mechanism is arranged on the inner side, and a fastening connecting mechanism is arranged on the outer side.

[0039] The fastening connecting mechanism comprises a fastening ring 4 and a heat shrink tube 2, the fastening ring 4 is fastened to the outer side surface of the copper pipe 1 and the aluminum pipe 3, and the heat shrink tube 2 is wrapped on the outer side of the connecting position of the fastening ring 4, the copper pipe 1 and the aluminum pipe 3.

[0040] The outer side of the connecting position between the copper pipe 1 and the aluminum pipe 3 is wrapped with a second sealing sleeve 7, the outer surface of the second sealing sleeve 7 is bonded with a corrosion-resistant sleeve 5, and the fastening ring 4 is fastened to the outer side of the two ends of the corrosion-resistant sleeve 5.

[0041] The two fastening rings 4 are connected with a reinforcing rod 6, the reinforcing rod 6 is located on the outer side of the connecting position between the copper pipe 1 and the aluminum pipe 3 and is attached to the outer side of the corrosion-resistant sleeve 5.

[0042] The second sealing sleeve 7 and the corrosion-resistant sleeve 5 are arranged on the outer side between the copper pipe 1 and the aluminum pipe 3, the fastening ring 4 and the reinforcing rod 6 are arranged on the outer side of the corrosion-resistant sleeve 5, and the copper pipe 1 and the aluminum pipe 3 are connected through the solder layer 8, so that the outer side of the connecting position between the aluminum pipe 3 and the copper pipe 1 is protected from corrosion, the connecting fastening is improved, and the connecting fastening degree between the copper pipe 1 and the aluminum pipe 3 is maintained.

[0043] Working mode: the reinforcing connecting mechanism is arranged on the inner side of the connecting position between the copper pipe 1 and the aluminum pipe 3, the positioning column 11 is fixed on the outer side of the reinforcing pipe 14 through the connecting plate 12, the connecting position between the copper pipe 1 and the aluminum pipe 3 is positioned and connected through the first positioning hole 9 and the second positioning hole 10, the relative rotation and shaking between the copper pipe 1 and the aluminum pipe 3 are avoided, the stability of the connection between the copper pipe 1 and the aluminum pipe 3 is improved, and the gap leading to refrigeration leakage is avoided.

[0044] The second sealing sleeve 7 and the corrosion-resistant sleeve 5 are arranged on the outer side between the copper pipe 1 and the aluminum pipe 3, the fastening ring 4 and the reinforcing rod 6 are arranged on the outer side of the corrosion-resistant sleeve 5, and the copper pipe 1 and the aluminum pipe 3 are connected through the solder layer 8, so that the outer side of the connecting position between the aluminum pipe 3 and the copper pipe 1 is protected from corrosion, the connecting fastening is improved, and the connecting fastening degree between the copper pipe 1 and the aluminum pipe 3 is maintained.

[0045] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the application concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A corrosion resistant copper-aluminum tube for use in a refrigeration system comprising a copper tube (1) and an aluminum tube (3), characterized in that: One end of the copper pipe (1) and one end of the aluminum pipe (3) are connected to each other, and the inner side is provided with a reinforced connection mechanism, and the outer side is provided with a fastening connection mechanism; The reinforced connection mechanism comprises a solder layer (8) and a reinforcing pipe (14), the solder layer (8) is welded between the copper pipe (1) and the aluminum pipe (3), and the reinforcing pipe (14) is sleeved on the inner side between the copper pipe (1) and the aluminum pipe (3); The fastening connection mechanism comprises a fastening ring (4) and a heat shrink tube (2), the fastening ring (4) is fastened to the outer side surface of the copper pipe (1) and the aluminum pipe (3), and the heat shrink tube (2) is wrapped on the outer side of the fastening ring (4) and the connection between the copper pipe (1) and the aluminum pipe (3).

2. A corrosion resistant copper-aluminum tube for use in a refrigeration system as defined in claim 1, wherein: The connecting end of the copper pipe (1) is provided with a first positioning hole (9), and the connecting end of the aluminum pipe (3) is provided with a second positioning hole (10).

3. A corrosion resistant copper-aluminum tube for use in a refrigeration system as defined in claim 2, wherein: The first positioning hole (9) and the second positioning hole (10) are aligned with each other, the outer side of the reinforcing pipe (14) is fixedly connected with a connecting plate (12), the surface of the connecting plate (12) is fixedly connected with a positioning column (11) on both sides, and the positioning column (11) is respectively inserted into the first positioning hole (9) and the second positioning hole (10).

4. A corrosion resistant copper-aluminum tube for use in a refrigeration system as defined in claim 3, wherein: The connecting plate (12) is located between the copper pipe (1) and the aluminum pipe (3), and is wrapped in the inside of the solder layer (8), and the positioning column (11) is horizontally arranged.

5. A corrosion resistant copper-aluminum tube for use in a refrigeration system as defined in claim 1, wherein: The inner surface of the reinforcing pipe (14) is bonded with a glass fiber sleeve (15), the outer surface of the reinforcing pipe (14) is bonded with a first sealing sleeve (13), and the first sealing sleeve (13) is tightly attached to the inner surface of the connection between the copper pipe (1) and the aluminum pipe (3).

6. A corrosion resistant copper-aluminum tube for use in a refrigeration system as defined in claim 1, wherein: The outer side of the connection between the copper pipe (1) and the aluminum pipe (3) is wrapped with a second sealing sleeve (7), the outer surface of the second sealing sleeve (7) is bonded with a corrosion-resistant sleeve (5), and the fastening ring (4) is fastened to the outer side of the corrosion-resistant sleeve (5).

7. A corrosion resistant copper-aluminum tube for use in a refrigeration system as defined in claim 6, wherein: The two fastening rings (4) are connected by a reinforcing rod (6), and the reinforcing rod (6) is located on the outer side of the connection between the copper pipe (1) and the aluminum pipe (3), and is attached to the outer side of the corrosion-resistant sleeve (5).

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