Integrated rectangular disc finned tube

Abstract

An integrated rectangular disc finned tube comprises a base tube and a plurality of parallel rectangular disc fins which are located on the outer contour of the base tube and form an integrated structure with the base tube. The gap between every two adjacent rectangular disc fins is 0.2-50 times of the thickness of each rectangular disc fin, and the diameter of each rectangular disc fin does not exceed 10 times of the diameter of the base tube. According to the integrated rectangular disc finned tube, the rectangular section is easy to manufacture, the flow equalizing effect is good, the heat exchange efficiency is good, machining forming is facilitated, the production efficiency is high, machining stress is reduced, working media are evenly distributed, the heat exchange uniformity is improved, dust accumulation is reduced or even avoided, contact thermal resistance is eliminated, the heat transfer efficiency is high, stability is high, and the service life is long; and a self-rectification effect is achieved on smoke, and airflow flowing is facilitated. The heat exchanger can be widely applied to the technical field of heat exchangers.

Description

Technical Field

[0001] This invention relates to an integrated rectangular disc finned tube, which can be widely used in the field of heat exchanger technology. Background Technology

[0002] Currently, the main existing technologies are H-type finned tubes and spiral finned tubes, each with its own advantages and disadvantages. In the existing H-type finned tube technology, the fins are welded to the base tube, and there is a gap between the fins and the base tube where the weld is not fully penetrated. This easily generates contact thermal resistance, affecting the heat transfer effect. Furthermore, when the weld is not fully penetrated, the fins are prone to detachment, and the fin tips will burn when exposed to high temperatures, resulting in a short service life.

[0003] Existing spiral finned tubes are generally formed by welding, which inevitably results in the aforementioned welding defects. Moreover, the spiral structure has high resistance and severe wear. Of course, spiral finned tubes can also be formed by integral extrusion, with the fins and base tube integrally formed. However, there is an angle between the fins and the base tube, resulting in high wind resistance, high power consumption, and easy accumulation of dust, slag, and wear under high dust conditions, leading to a short service life. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated rectangular disc finned tube that features simple manufacturing of a rectangular cross-section, good flow uniformity, good heat exchange efficiency, is easy to process and form, has high production efficiency, helps reduce processing stress, uniformly distributes the working fluid, improves heat exchange uniformity, reduces or even avoids ash accumulation, eliminates contact thermal resistance, has high heat transfer efficiency, strong stability, long service life, has a self-rectifying effect on flue gas, and is conducive to airflow.

[0005] To achieve the above objectives, the present invention provides an integrated rectangular disc finned tube, comprising a base tube, and a plurality of parallel rectangular disc fins located on the outer contour of the base tube and forming an integral structure with the base tube; wherein the gap between the rectangular disc fins is 0.2 to 50 times the thickness of the rectangular disc fins, and the diameter of the rectangular disc fins does not exceed 10 times the diameter of the base tube.

[0006] The present invention relates to an integral rectangular disc finned tube, wherein the rectangular disc fin is an annular disc fin.

[0007] The present invention relates to an integrated rectangular disc finned tube, wherein the rectangular disc fin is a trapezoidal notched disc fin.

[0008] The present invention relates to an integrated rectangular disc finned tube, wherein the rectangular disc fin is a rectangular notched disc fin.

[0009] The present invention relates to an integrated rectangular disc finned tube, wherein the rectangular disc fin is a triangular notched disc fin.

[0010] The present invention relates to an integral rectangular disc finned tube, wherein the rectangular disc fins are located on the outer contour of the base tube, and the base tube and the rectangular disc fins are integrally formed without welding. Each integral rectangular disc finned tube consists of a base tube and several parallel rectangular disc fins, and a certain gap is maintained between the rectangular disc fins.

[0011] This invention relates to an integrated rectangular disc finned tube, wherein the diameter of the rectangular disc fins does not exceed 10 times the diameter of the base tube. If the diameter of the rectangular disc fins is too small, the expansion rate is low; if the diameter of the rectangular disc fins is too large, the thermal resistance is high, it occupies a large space, the rectangular disc fins are prone to burning and wear, and it is also uneconomical.

[0012] This invention relates to an integrated rectangular disc finned tube. The parallel rectangular disc fins are connected via a base tube, but are not directly connected to each other. A certain gap is maintained between the rectangular disc fins. A small gap increases the expanded heat exchange surface area, but increases resistance and easily leads to dust accumulation; therefore, it should not be less than 0.2 times the thickness of the rectangular disc fin. A large gap reduces resistance and prevents dust accumulation, but decreases the expansion rate and reduces economic efficiency. Even with the thinnest rectangular disc fins, the gap should not exceed 50 times the thickness of the rectangular disc fin. Therefore, the gap should be 0.2 to 50 times the thickness of the rectangular disc fin. The effective process of this invention is to directly use a thick-walled tube for integral forming, with all expanded rectangular disc fins connected to the base tube.

[0013] The present invention is an integrated rectangular disc finned tube with a rectangular cross-section along the axial direction. The rectangular cross-section is simple to manufacture, has high manufacturing efficiency, good flow uniformity, and good heat exchange efficiency.

[0014] The present invention relates to an integral rectangular disc finned tube, wherein the annular disc finned tube is advantageous for processing and forming, and has high production efficiency.

[0015] This invention relates to an integrated rectangular disc finned tube. The trapezoidal, rectangular, and triangular notched disc fins have openings along the circumference at the edge of the disc, which helps reduce processing stress, distribute the working fluid evenly, and improve heat exchange uniformity. The openings around the disc also help reduce or even prevent dust accumulation.

[0016] The present invention is an integrated rectangular disc finned tube with an integral structure. There is no gap between the rectangular disc fins and the base tube, which eliminates the contact thermal resistance between the rectangular disc fins and the base tube, and also eliminates the loosening of the rectangular disc fins.

[0017] This invention relates to an integrated rectangular disc finned tube, which employs rectangular disc fins, each with a large fin-to-weight ratio. By externally expanding the base tube with rectangular disc fins, the heat exchange area of ​​the rectangular disc finned tube is increased, resulting in high heat transfer efficiency, strong stability, resistance to dust accumulation, and a long service life.

[0018] The integrated rectangular disc finned tube of the present invention, by employing annular disc fins, trapezoidal notched disc fins, rectangular notched disc fins, or triangular notched disc fins, can divide the flue gas into several linearly arranged rectangular flow regions, which has a self-rectifying effect on the flue gas, is conducive to airflow, thereby reducing ash accumulation and slag buildup between the rectangular disc fins and ensuring heat transfer efficiency.

[0019] In summary, the integrated rectangular disc finned tube of the present invention has a simple rectangular cross-section, good flow uniformity, good heat exchange efficiency, is easy to process and form, has high production efficiency, helps to reduce processing stress, uniformly distributes the working fluid, improves heat exchange uniformity, reduces or even avoids ash accumulation, eliminates contact thermal resistance, has high heat transfer efficiency, strong stability, long service life, and has a self-rectifying effect on flue gas, which is beneficial to airflow. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 , Figure 3 , Figure 4 , Figure 5 yes Figure 1 AA section view in the image. Detailed Implementation

[0022] exist Figures 1-5 The present invention relates to an integral rectangular disc finned tube, comprising a base tube 1, and a plurality of parallel rectangular disc fins 2 located on the outer contour of the base tube and forming an integral structure with the base tube; wherein the gap between the rectangular disc fins is 0.2 to 50 times the thickness of the rectangular disc fins, and the diameter of the rectangular disc fins does not exceed 10 times the diameter of the base tube.

[0023] exist Figure 2 In this invention, the integral rectangular disc finned tube, wherein the rectangular disc fin 2 is an annular disc fin.

[0024] exist Figure 3 In this invention, the integral rectangular disc finned tube, wherein the rectangular disc fin 2 is a trapezoidal notched disc fin.

[0025] exist Figure 4 In this invention, the integral rectangular disc finned tube, wherein the rectangular disc fin 2 is a rectangular notched disc fin.

[0026] exist Figure 5In this invention, the integral rectangular disc finned tube, wherein the rectangular disc fin 2 is a triangular notched disc fin.

[0027] The present invention relates to an integrated rectangular disc finned tube. The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments without departing from the scope of the present invention, based on the technical essence of the present invention, and within the spirit and principles of the present invention, shall still fall within the protection scope of the present invention.

Claims

1. A one-piece rectangular disc finned tube, characterized in that, It includes a base tube, and several parallel rectangular disc fins located on the outer contour of the base tube and forming an integral structure with the base tube; the gap between the rectangular disc fins is 0.2 to 50 times the thickness of the rectangular disc fins, and the diameter of the rectangular disc fins does not exceed 10 times the diameter of the base tube.

2. The integrated rectangular disc finned tube according to claim 1, characterized in that, The rectangular disc fin is an annular disc fin.

3. The integrated rectangular disc finned tube according to claim 1, characterized in that, The rectangular disc fin is a trapezoidal notched disc fin.

4. The integrated rectangular disc finned tube according to claim 1, characterized in that, The rectangular disc fin is a rectangular notched disc fin.

5. The integrated rectangular disc finned tube according to claim 1, characterized in that, The rectangular disc fin is a triangular notched disc fin.

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