Aluminum-based copper-clad composite pipe and heating ventilation air conditioner radiator using same

Abstract

The utility model discloses an aluminum-based copper-clad composite tube and a heating ventilation air conditioner radiator using the same, the aluminum-based copper-clad composite tube comprises a pure aluminum-based tube and a pure copper-clad tube, and the pure copper-clad tube is arranged on the inner side of the pure aluminum-based tube; wherein a polymer interface agent is arranged between the bonding surfaces of the pure aluminum base tube and the pure copper clad tube to provide interlayer bonding force of the bonding surfaces, or the bonding surfaces of the pure aluminum base tube and the pure copper clad tube are directly and tightly combined through extrusion, rolling, drawing or welding processes. The aluminum pipe is used as a base pipe, and the overall strength is borne by the base pipe; interlayer bonding force exists between the bonding surfaces of the pure aluminum-based tube and the pure copper-clad tube, so that the layering phenomenon cannot occur or is difficult to occur in the use process; the usage amount of copper can be reduced, so that the cost and the weight are reduced; due to the design of inner copper and outer aluminum, inner copper is fast in heat conduction, outer aluminum is low in specific heat and fast in heat dissipation, and therefore heat exchange efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchange pipe technical field, concretely relates to an aluminium base inner copper clad composite pipe and the heating ventilation air conditioner radiator of application of the aluminium base inner copper clad composite pipe. BACKGROUND

[0002] Metal pipe material is modern industry bulk basic raw material, according to public data disclosure, domestic market annual consumption copper pipe is about 300 million tons, stainless steel pipe is about 800 million tons, and only these two market scale reaches every year ten billion yuan.

[0003] In the refrigeration industry, pure (purple) copper pipe is widely used as evaporator, condenser pipe and corresponding connecting pipe. According to public data disclosure, the copper pipe consumed in refrigeration industry is about 1 million tons per year, accounting for about 1 / 3 of the domestic market. China's copper resources are scarce, and it is highly dependent on imports, which is easily affected by the international market. In addition, the high price and heavy weight of copper pipes result in high cost.

[0004] To solve the above problems, some merchants use pure aluminum pipe instead of pure copper pipe (known as "aluminum instead of copper" in the industry), which can reduce the price and weight, but it is not accepted by users, so the aluminum instead of copper technology only accounts for about 3% of the market. Some merchants use copper-aluminum pipe, which is actually copper plating on the wall of aluminum pipe, and the performance is quite different from that of pure copper pipe. Some merchants use aluminum-clad copper, that is, a copper pipe is inserted into an aluminum pipe, but there is no or low bonding force between the aluminum pipe and the copper pipe, which easily causes "two layers of skin" and affects the heat conduction and heat dissipation effect. CONTENT OF THE UTILITY MODEL

[0005] Therefore, the utility model provides an aluminium base inner copper clad composite pipe and the heating ventilation air conditioner radiator of application of the aluminium base inner copper clad composite pipe to solve the technical problems of pure copper pipe dependence on imports, high cost, aluminum instead of copper not accepted by the market, and aluminum-clad copper easy to separate and poor heat conduction and heat dissipation effect.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] The utility model discloses a kind of aluminium base inner copper clad composite pipe, including pure aluminium base pipe and pure copper clad pipe, the pure copper clad pipe is set in the inner side of the pure aluminium base pipe;Wherein, high molecular interface agent is arranged between the combination surface of the pure aluminium base pipe and pure copper clad pipe to provide the interlayer bonding force of combination surface, alternatively, the combination surface layer of the pure aluminium base pipe and pure copper clad pipe is directly formed by extrusion, rolling, drawing or welding process Tight combination.

[0008] Further, the pipe diameter of the aluminium base inner copper clad composite pipe is 5-163mm.

[0009] Further, the wall thickness ratio of the pure aluminium base pipe and pure copper clad pipe is 1:1-10:1.

[0010] The second aspect of the utility model provides a heating ventilation air conditioner radiator, it includes the aluminum base inner copper clad composite pipe provided by the first aspect of the utility model.

[0011] Further, the heating ventilation air conditioner radiator further comprises at least two end plates, a plurality of fixing columns and a plurality of aluminum heat dissipation fins, the two end plates are oppositely arranged and connected and fixed through the fixing columns arranged at the edges of the plates, the aluminum heat dissipation fins are arranged at intervals between the two end plates, and the aluminum heat dissipation fins are provided with perforations for tightly penetrating the aluminum base inner copper clad composite pipe.

[0012] The utility model has the following advantages:

[0013] The aluminum base inner copper clad composite pipe provided by the utility model uses an aluminum pipe as a base pipe, and the overall strength is borne by the base pipe. The copper pipe is tightly combined in the aluminum pipe through extrusion, rolling, drawing or welding (welding can use "friction stir welding" or "a welding method for an aluminum base dissimilar material light metal composite pipe for a structure" or other welding methods). Alternatively, the copper pipe and the aluminum pipe are combined using a high molecular interface agent, so that the aluminum pipe and the copper pipe are combined together, and the interface between the pure aluminum base pipe and the pure copper clad pipe has interlayer bonding force. During use (such as after bending), delamination does not occur or is difficult to occur, and poor heat transfer effect caused by two layers of skin does not occur. The aluminum pipe replaces part of the wall thickness of the existing pure copper pipe, thereby reducing the use amount of the copper pipe and reducing the cost and weight (the cost can be reduced by 20-35%, the weight can be reduced by 35-50%, and the specific reduction is determined according to the situation). More importantly, the instantaneous heat absorption capacity of copper is much greater than that of aluminum (about 1.6 times), and the heat dissipation speed of aluminum is much higher than that of copper (about 2.3 times). This inner copper outer aluminum composite pipe can combine the advantages of both, with fast internal heat conduction and fast external heat dissipation, thereby improving the heat exchange efficiency, and is particularly suitable for occasions with high heat transfer requirements. Therefore, the aluminum base inner copper clad composite pipe has excellent comprehensive performance, and is a perfect replacement pipe material for the evaporator and the condenser in the refrigeration industry and the corresponding connecting pipe.

[0014] The above summary is intended to illustrate the present description and is not intended to limit in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features will be readily apparent to those skilled in the art by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed in the embodiments or prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be derived from the provided drawings without creative labor.

[0016] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, for understanding and reading by those skilled in the art, and are not used to limit the implementation conditions of the present application, so they do not have technical substantive significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that the present application can produce, should still fall within the scope of the technical content disclosed by the present application.

[0017] Figure 1 A structural schematic view of an aluminum-based inner copper-coated composite pipe provided for the embodiment 1 of the present application;

[0018] Figure 2 A structural schematic view of a heating ventilation air conditioner radiator provided for the embodiment 2 of the present application;

[0019] Figure 3 A schematic view of the close connection of the aluminum-based inner copper-coated composite pipe and the aluminum-made heat dissipation fin of the heating ventilation air conditioner radiator provided for the embodiment 2 of the present application;

[0020] Figure 4 A local structural schematic view of the aluminum-made heat dissipation fin of the heating ventilation air conditioner radiator provided for the embodiment 2 of the present application.

[0021] In the figure: 1, aluminum-based inner copper-coated composite pipe; 11, pure aluminum base pipe; 12, pure copper coated pipe; 13, high polymer interface agent; 2, end plate; 3, fixed column; 4, aluminum-made heat dissipation fin; 41, perforation; 42, convex part; 5, U-shaped joint. DETAILED DESCRIPTION

[0022] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and description are considered to be exemplary in nature rather than limiting.

[0023] Embodiment 1

[0024] As Figure 1As shown, the embodiment provides an aluminum-based inner copper clad composite pipe, which comprises a pure aluminum base pipe 11 and a pure copper clad pipe 12, and the pure copper clad pipe 12 is arranged on the inner side of the pure aluminum base pipe 11. Wherein, a high polymer interface agent 13 is arranged between the bonding surface of the pure aluminum base pipe 11 and the pure copper clad pipe 12 to provide the interlayer bonding force of the bonding surface, or the bonding surface layer of the pure aluminum base pipe 11 and the pure copper clad pipe 12 is directly formed into a close combination through an extrusion, rolling, drawing or welding process. Optionally, the pipe diameter of the aluminum-based inner copper clad composite pipe is 5-163mm; of course, other sizes can be produced according to customer requirements or market needs. Generally, the design of thin copper and thick aluminum is adopted, and the wall thickness ratio of the pure aluminum base pipe 11 to the pure copper clad pipe 12 is 1:1-10:1, and of course other wall thickness ratios can also be adopted.

[0025] The aluminum-based inner copper clad composite pipe provided by the embodiment takes the aluminum pipe as the base pipe, and the overall strength is borne by the base pipe. The copper pipe is closely combined in the aluminum pipe through an extrusion, rolling, drawing or welding (the welding can use "friction stir welding" or "a welding method of an aluminum-based dissimilar material lightweight metal composite pipe for structure" or other welding methods) process, or the copper pipe and the aluminum pipe are combined by using a high polymer interface agent 13, so that the aluminum pipe and the copper pipe are combined together, the interlayer bonding force is provided between the bonding surface of the pure aluminum base pipe 11 and the pure copper clad pipe 12, and the delamination phenomenon does not occur or is difficult to occur in the use process (such as after bending), and the poor heat transfer effect caused by the two layers is avoided. The aluminum pipe replaces part of the wall thickness of the existing pure copper pipe, so that the use amount of the copper pipe can be reduced, and thus the cost and the weight can be reduced (the cost can be reduced by 20-35%, the weight can be reduced by 35-50%, and the specific value is determined according to the situation), and more importantly, the instantaneous heat absorption capacity of copper is far greater than that of aluminum (about 1.6 times), and the heat dissipation speed of aluminum is far higher than that of copper (about 2.3 times). The composite pipe with the inner copper and the outer aluminum can combine the advantages of both, the internal heat conduction is fast, and the external heat dissipation is fast, so that the heat exchange efficiency is improved, and the composite pipe is especially suitable for occasions with high heat transfer requirements. Therefore, the aluminum-based inner copper clad composite pipe has excellent comprehensive performance, and is a perfect replacement pipe material for the evaporator and the condenser and the corresponding connecting pipe in the refrigeration industry.

[0026] Embodiment 2

[0027] Embodiment 2 provides a heating, ventilation and air conditioning radiator, which comprises the aluminum-based inner copper clad composite pipe 1 of embodiment 1.

[0028] As Figures 2-4As shown, in the present embodiment, the air conditioning radiator further comprises at least two end plates 2, a plurality of fixing columns 3 and a plurality of aluminum radiating fins 4. The two end plates 2 are oppositely arranged and connected and fixed by the fixing columns 3 arranged at the edges of the plates. The aluminum radiating fins 4 are arranged at intervals between the two end plates 2. The aluminum radiating fins 4 are provided with perforations 41 for tightly penetrating the aluminum inner copper clad composite pipes 1. The aluminum inner copper clad composite pipes 1 penetrate the perforations 41 of each aluminum radiating fin 4 in sequence. Optionally, the air conditioning radiator comprises a plurality of aluminum inner copper clad composite pipes 1. The end plates 2 and the aluminum radiating fins 4 are provided with a plurality of perforations 41. The pipe ends of the aluminum inner copper clad composite pipes 1 are located outside the end plates 2 and are connected by U-shaped joints 5. The U-shaped joints 5 can be bent from the aluminum inner copper clad composite pipes 1 or can be bent from other pipes. Optionally, the aluminum radiating fins 4 are integrally formed by pressure casting (casting or stamping process) and are provided with protrusions 42 extending outwardly along the thickness direction of the wall of the aluminum radiating fins 4 at the perforations 41. The protrusions 42 can increase the tightly connected area with the aluminum inner copper clad composite pipes 1 and ensure the heat conduction effect.

[0029] Two air conditioning units of the same type are provided by the air conditioning manufacturer. One unit is installed with pure copper pipes for refrigeration circulation pipeline, and the other unit is installed with aluminum inner copper clad composite pipes of the same inner diameter specification. After filling the same refrigerant and completing installation and debugging, the two units are set under the same external environmental conditions and are run for comparison test to examine and collect refrigeration efficiency parameters such as energy efficiency ratio. The air conditioning radiator using the aluminum inner copper clad composite pipe has better refrigeration efficiency.

[0030] Embodiment 3

[0031] Embodiment 3 provides a liquid cooling heat dissipation pipeline of a big data cloud computing data center computing device, which is manufactured by using the aluminum inner copper clad composite pipe of embodiment 1.

[0032] The liquid cooling heat dissipation pipeline of the present embodiment is manufactured by using the aluminum inner copper clad composite pipe, which can improve the heat exchange efficiency.

[0033] In the description of the present specification, it should be understood that the orientations or positional relationships indicated by the terms “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential” are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0034] In addition, the terms "first", "second", etc. are used herein only to describe different instances, and do not imply or suggest relative importance or a number of the technical features indicated. Thus, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0035] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, or detachable connection, or integrated; can be mechanical connection, or electrical connection, or communication; can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or the contact of the first and second features through another feature between them. Moreover, the "upper", "above" and "on" of the first feature to the second feature includes the first feature above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "under" and "under" of the first feature to the second feature includes the first feature below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0037] The above disclosure provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of the specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to the same reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed.

[0038] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can easily think of various changes or replacements within the technical scope disclosed by the present application, which should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An aluminum-based inner-copper clad composite tube, characterized by, The pure aluminum base pipe and the pure copper cladding pipe are combined with a high polymer interface agent between the combined surface of the pure aluminum base pipe and the pure copper cladding pipe to provide the interlayer bonding force of the combined surface, or the combined surface of the pure aluminum base pipe and the pure copper cladding pipe is directly formed into a close combination through extrusion, rolling, drawing or welding process.

2. The aluminum-based inner-copper clad composite tube according to claim 1, wherein, The pipe diameter of the aluminum base inner copper cladding composite pipe is 5-163 mm.

3. The aluminum-based inner-copper clad composite tube of claim 1, wherein, The wall thickness ratio of the pure aluminum base pipe to the pure copper cladding pipe is 1:1-10:

1.

4. A heating, ventilation, air conditioning and radiator, characterized by The aluminum base inner copper cladding composite pipe of any one of claims 1-3 is included.

5. The space heating, air conditioning, and refrigeration radiator of claim 4, wherein, The heating, ventilation and air conditioner radiator further comprises at least two end plates, a plurality of fixing columns and a plurality of aluminum radiating fins, the two end plates are oppositely arranged and connected and fixed through the fixing columns arranged at the edges of the plates, the aluminum radiating fins are arranged at intervals between the two end plates, and the aluminum radiating fins are provided with perforations for closely penetrating the aluminum base inner copper cladding composite pipe.

6. A liquid cooling heat dissipation pipeline of a big data cloud computing data center computing device, characterized in that, The aluminum base inner copper cladding composite pipe of any one of claims 1-3 is adopted.

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