CN-224230820-U - Light-weight finned tube

Abstract

The utility model relates to the technical field of heat exchanger manufacturing, in particular to a lightweight finned tube which comprises a base tube, wherein the base tube is a titanium alloy tube, a fin structure component is fixedly arranged on the outer wall of the base tube, the fin structure component is a three-dimensional aluminum alloy structural component with turbulent flow micro-channels and is used for improving the heat exchange efficiency of the finned tube through the turbulent flow micro-channels, and the fin structure component is fixed on the outer wall of the base tube through vacuum brazing.

Inventors

• WANG BAISHI

Assignees

• 西安沣飞新能源科技有限公司

Dates

Publication Date

20260512

Application Date

20250616

Claims (9)

1. 1. The utility model provides a lightweight finned tube, its characterized in that includes the base pipe, the base pipe is the titanium alloy pipe, the fixed fin structure subassembly that is provided with of base pipe outer wall, fin structure subassembly is the three-dimensional aluminum alloy structure spare that has the turbulent flow microchannel for promote the heat exchange efficiency of finned tube through the turbulent flow microchannel.
2. 2. The lightweight finned tube of claim 1, wherein the fin structure assembly is integrally formed into a three-dimensional aluminum alloy structural member using 3D printing.
3. 3. The lightweight finned tube of claim 1, wherein the fin structure assembly comprises a plurality of parallel annular fins, a plurality of tree-shaped support columns connected between adjacent fins, forming the turbulent micro-channels.
4. 4. A lightweight finned tube according to claim 3 wherein the tree-like support column comprises a main stem and a plurality of furcation legs connected to the main stem.
5. 5. A lightweight finned tube according to claim 3 wherein the spacing between adjacent annular fins in the fin structure assembly is 6-10mm, the annular fin height is 8-20mm, and the annular fin thickness is 0.4-0.6mm.
6. 6. The light-weight finned tube of claim 4 wherein the support column has a diameter of 0.4mm to 0.8mm and the branch legs of the support column form an angle of 50 ° to 80 ° with the primary stem.
7. 7. The lightweight finned tube of claim 1, wherein the fin structure assembly is secured to the base tube outer wall by vacuum brazing.
8. 8. The lightweight finned tube of claim 1, wherein the base tube outer surface is provided with a barrier layer located at least at the junction of the base tube and fin structure assembly.
9. 9. The lightweight finned tube of claim 8, wherein the barrier layer is a Ni-Cu-Ti alloy layer.

Description

Light-weight finned tube Technical Field The utility model relates to the technical field of heat exchanger manufacturing, in particular to a lightweight finned tube. Background The existing compact air cooler finned tube generally adopts a single metal material, such as an all-titanium finned tube, an all-aluminum finned tube or a steel-aluminum composite finned tube, however, the adoption of the single metal material has the following defects: The all-titanium finned tube has the advantages of corrosion resistance and high temperature resistance, low heat conductivity coefficient, large mass (the mass per unit length is usually more than or equal to 2.9 kg/m) and difficult to meet the light weight requirement, the all-aluminum finned tube has excellent heat conductivity and light mass, but has insufficient pressure resistance and high-temperature strength (the strength is obviously reduced above 250 ℃) and cannot adapt to high-pressure working conditions (such as 3MPa design pressure), the steel-aluminum composite finned tube adopts a high-frequency welding or mechanical expansion process to coat a spiral fin formed by a metal belt on the outer surface of a base tube, the method is limited by the specification of a mould, the complicated fin form is difficult to manufacture, and meanwhile, the heat exchange performance is limited and the weight is increased. Meanwhile, when titanium and aluminum dissimilar metals are welded, poor wettability and the formation of brittle ti—al intermetallic compounds lead to difficulty in mass production. Accordingly, there is a need for a lightweight finned tube that ameliorates the above-described problems. Disclosure of Invention In order to solve the problems in the prior art, the utility model provides a lightweight finned tube which comprises a base tube, wherein the base tube is a titanium alloy tube, a fin structure component is fixedly arranged on the outer wall of the base tube, and the fin structure component is a three-dimensional aluminum alloy structural member with turbulent flow micro-channels and is used for improving the heat exchange efficiency of the finned tube through the turbulent flow micro-channels. Further, the fin structure component is integrally formed into a three-dimensional aluminum alloy structural component by 3D printing. Further, the fin structure assembly comprises a plurality of annular fins which are arranged in parallel, and a plurality of tree-shaped support columns are connected between the adjacent fins to form the turbulence micro-channel. Further, the tree-shaped support column comprises a main rod and a plurality of bifurcation branches connected with the main rod. Further, the spacing between adjacent annular fins in the fin structure assembly is 6-10mm, the height of the annular fins is 8-20mm, and the thickness of the annular fins is 0.4-0.6mm. Further, the diameter of the support column is 0.4mm-0.8mm, and the included angle between the branch of the support column and the main rod is 50-80 degrees. Further, the fin structure assembly is fixed on the outer wall of the base pipe through vacuum brazing. Further, a barrier layer is arranged on the outer surface of the base tube, and the barrier layer is at least positioned at the joint of the base tube and the fin structure assembly. Further, the barrier layer is a Ni-Cu-Ti alloy layer. The utility model has the beneficial effects that: The light-weight finned tube is provided with the finned structure component and the base tube, the finned structure component is fixed on the outer wall of the base tube through vacuum brazing, the finned tube structure is light, has light weight, high strength and high-efficiency heat exchange performance, is particularly suitable for compact heat exchange equipment such as air coolers, condensers and the like, is a 3D printing integrated aluminum alloy structural member, liberates a die, and can manufacture complex fin forms. Drawings FIG. 1 is a schematic perspective view of a lightweight finned tube of the present utility model; FIG. 2 is a front view of a lightweight finned tube of the present utility model; FIG. 3 is a schematic view of the inventive stent structure. Reference numerals: In the figure, a 1-base tube, a 2-fin structure assembly and a 3-support column are shown. Detailed Description The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. Referring to fig. 1-3, the utility model provides a lightweight finned tube, which comprises a base tube 1, wherein the base tube 1 is a titanium alloy tube, a fin stru