Strip fin of efficient heat exchanger and heat exchanger

Abstract

The long-strip fin of the efficient heat exchanger comprises at least two sets of fin bodies, a plurality of rows of heat exchange tube holes are formed in each set of fin bodies, the tube holes of heat exchange tubes are the same in size and are arranged in four rows, and the adjacent tube holes in each row are arranged at equal intervals. A plurality of pipe holes are formed in the fin body, a plurality of window units are arranged on the periphery of each pipe hole and used for increasing the heat exchange area of the fin body and improving the heat transfer efficiency, and symmetrical wavy reinforcing connecting pieces are arranged on the edges of the two sides of each fin body and used for reducing boundary turbulent flow, improving the strength of the fin body and facilitating overall assembly. The long-strip fin of the efficient heat exchanger is simple and reasonable in overall structure, good in heat exchange effect, high in strength, long in service life and capable of effectively reducing the size of equipment, saving materials and improving safety and economical efficiency of pressure-bearing equipment.

Description

TECHNICAL FIELD

[0001] The utility model belongs to heat exchange equipment technical field relates to a kind of long fin of high-efficiency heat exchanger and heat exchanger, more specifically, to a kind of long fin of high-efficiency heat exchanger concentric circle slitting and heat exchanger. BACKGROUND

[0002] In air separation system, compressor is pressurized to air or nitrogen by multi-stage compression, and heat exchanger needs to be set between each stage of compression to cool gas to a certain temperature. The cooling effect of the heat exchanger directly affects the energy and performance required for compression.

[0003] In recent years, with the continuous improvement of domestic air separation level, heat exchange equipment is also developing in the direction of high efficiency, fine and other directions. The existing heat exchanger has the problems of low heat exchange efficiency and low fin strength. Therefore, a kind of long fin of high-efficiency heat exchanger and heat exchanger is designed to overcome the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the deficiencies of prior art, and provides a kind of long fin of high-efficiency heat exchanger and heat exchanger with simple and reasonable structure, good heat exchange effect, high strength, long service life, effectively reduce equipment volume, save material, improve the safety and economy of pressure-bearing equipment.

[0005] The utility model is realized by the following technical scheme: a kind of long fin of high-efficiency heat exchanger, including at least two groups of fin body, multiple columns of heat exchange tube holes are respectively formed in each group of fin body, the size of the heat exchange tube hole is the same and is arranged in four columns, the adjacent tube holes in each column are arranged at equal intervals, and multiple window units are arranged around each tube hole, to increase the heat exchange area of the fin body and improve the heat transfer efficiency, wave-shaped reinforcing connecting pieces are respectively arranged at both side edges of each group of fin body, to reduce turbulence, improve the strength of the fin body and facilitate overall assembly.

[0006] As preferred: in the four columns of tube holes of the heat exchange tube, the centers of the tube holes in the same column are on the same straight line, the adjacent two columns of tube holes are arranged in an up-down staggered manner, and a circle of arc-shaped reinforcing stripes is arranged at the outer edge of each tube hole, so that the tube hole opening has a double-flanged structure, to improve the strength of each tube hole.

[0007] As preferred: the distance between the centers of the upper and lower two adjacent tube holes in the same column and the nearest tube hole in the adjacent column is the same, so that the three tube holes are arranged in an equilateral triangle.

[0008] As preferred: the window unit is four arc structures with the same size, respectively arranged at the four corners of the tube hole and arranged in concentric circles with the tube hole.

[0009] As preferred: in the four window units of each tube hole, two are arranged symmetrically on the upper side of the tube hole, and the other two are arranged symmetrically on the lower side of the tube hole, and the two upper window units and the two lower window units are arranged symmetrically.

[0010] As preferred: in the four window units of each tube hole, the separation interval between the two upper window units and the two lower window units is 30°.

[0011] As preferred: the circular arc radius of the reinforcing connecting piece of the fin body is 1.5-2mm, which is used to reduce smooth airflow and reduce resistance.

[0012] As preferred: a reinforcing rib with the same length as the fin body is arranged between the two adjacent rows of tube holes on the fin body, and the stripe width of the reinforcing rib is 2mm.

[0013] A heat exchanger is installed with the long strip fin of the high-efficiency heat exchanger.

[0014] Compared with the prior art, the utility model has the beneficial effects as follows:

[0015] The utility model discloses a high-efficiency heat exchanger's long strip fin for middle and high pressure supercharger interstage cooler heat exchange element research and development new structure, adopt specific fining ratio, corrugation and appearance structure and stamp, and the type of corrugation can not only increase the heat exchange surface area, and its special fluid passage design also can change airflow direction constantly to increase the flow condition of the flow of airflow, thereby play the role of heat transfer enhancement. And the interval airflow characteristic of middle and high pressure air cooler product is analyzed, under the specific heat exchange pipe diameter and pipe spacing, the fin heat transfer efficiency can obtain greater improvement, can effectively reduce the equipment volume, save the material, promote the safety and economy of pressure-bearing equipment, thereby design a kind of high-efficiency heat exchanger's long strip fin.

[0016] The utility model discloses a circle arc reinforcing stripe is arranged on the outside edge of each tube hole, makes the tube hole orifice present double flanging structure, the wave-shaped reinforcing connecting piece designed on both side edges is used to reduce boundary turbulence and improve overall strength, and for the characteristics of equipment middle and high pressure, use smaller heat exchange pipe outer diameter, so that heat exchange pipe has stronger pressure resistance under same thickness. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structure schematic diagram of the utility model.

[0018] Figure 2 It is Figure 1 The sectional view of middle A-A. DETAILED DESCRIPTION

[0019] In order to make ordinary skilled in the art more clearly understand the purpose, technical scheme and advantages of the utility model, the utility model will be further described below in conjunction with the drawings and examples.

[0020] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms such as 'up', 'down', 'left', 'right', 'inner', 'outer', 'horizontal','vertical' is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model, and does not indicate or imply that the indicated device or element must have a particular orientation, so it cannot be understood as a limitation on the utility model.

[0021] The utility model will be described in detail below in conjunction with the drawings: as Figure 1 The long strip fin of the high-efficiency heat exchanger shown in the figure, including at least two groups of fin bodies 1, a plurality of heat exchange tube holes 2 of heat exchange tubes are respectively formed on each group of fin bodies 1, characterized by: the heat exchange tube hole 2 is same in size and is arranged in four columns, the adjacent heat exchange tube holes 2 in each column are arranged at equal intervals, and a plurality of window units 3 are arranged around each heat exchange tube hole 2 for increasing the heat exchange area of the fin body 1 and improving the heat transfer efficiency, and wave-shaped reinforcing connecting plates 4 are respectively arranged at both side edges of each group of fin bodies 1 and are symmetrical to each other for reducing boundary turbulence, improving the strength of the fin body 1 and facilitating overall assembly.

[0022] In the four heat exchange tube holes 2, the centers of the heat exchange tube holes 2 in the same column are on the same straight line, the adjacent two columns of heat exchange tube holes 2 are arranged in an up-and-down staggered manner, and a circular-arc-shaped reinforcing stripe 5 is arranged at the outer side edge of each heat exchange tube hole 2, so that the hole opening of the heat exchange tube hole 2 has a double-flanged structure for improving the strength of each heat exchange tube hole 2.

[0023] The distance between the centers of the upper and lower two adjacent heat exchange tube holes 2 in the same column and the nearest heat exchange tube hole 2 in the adjacent column is the same, so that the three heat exchange tube holes 2 are arranged in an equilateral triangle. The window unit 3 is a four same circular-arc structure 6, which is arranged at the four corners of the heat exchange tube hole 2 and is distributed in a concentric circle with the heat exchange tube hole 2. In the four window units 3 of each heat exchange tube hole 2, two of them are distributed above the heat exchange tube hole 2 and arranged in a left-right symmetrical manner, and the other two are distributed below the heat exchange tube hole 2 and arranged in a left-right symmetrical manner, and the two window units 3 above and the two window units 3 below are arranged in an up-and-down symmetrical manner. Figure 2 As shown in the figure, the separation interval between the two window units 3 above and the two window units 3 below in the four window units 3 of each heat exchange tube hole 2 is 30°.

[0024] The circular arc radius of the reinforcing connecting piece 4 of the fin body 1 is 1.5-2 mm, which plays a role of reducing smooth airflow and reducing resistance. The fin body 1 is provided with a reinforcing rib 7 with the same length as the fin body between two adjacent rows of tube holes 2, and the stripe width of the reinforcing rib 7 is 2 mm.

[0025] A heat exchanger is installed with the long strip fin of the high-efficiency heat exchanger.

[0026] The fin type of the utility model is high in efficiency and reasonable in design, including window shape, angle, position, quantity and the like, obviously improves heat exchange capacity, and further improves heat exchange efficiency and energy efficiency ratio.

[0027] As Figure 1 shown, it is a schematic view of one of the embodiments of the utility model, four rows of heat exchange tube holes are arranged on each row of fins, and the three adjacent tube holes between two adjacent rows are arranged in a triangle, wherein, the window positions distributed between the two adjacent heat exchange tubes are equally divided between the heat exchange tubes, and the two window circle division points are equally divided between the lines BC. Along the width direction of the long strip fin, the external arc connecting line between the adjacent windows and the center line of the window and the tube hole center are perpendicular to each other. The external arc connecting line of the adjacent window and the window arc line and the center line of the heat exchange tube are perpendicular to each other. The window width is the distance between the two adjacent connecting lines of the heat exchange tube, that is, the length of the line AB shown in the figure is 1 / 4. The angle between the two adjacent windows in the length direction of the single heat exchange tube hole is 30°.

[0028] The utility model aims at improving the heat exchange effect with small resistance increase, so as to obtain higher heat exchange effect.

[0029] The heat exchanger with the fin of the utility model has the advantages of high heat transfer efficiency, convenient installation, good fin rigidity, stable operation, small equipment volume, small total pressure loss and the like, and the cost is greatly reduced.

[0030] The specific embodiments described in the present application are only illustrative of the principles and effects of the utility model, and are not used to limit the utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A long strip fin of a high efficiency heat exchanger, comprising at least two groups of fin bodies (1), and a plurality of rows of tube holes (2) for heat exchange tubes are respectively formed on each group of fin bodies (1), characterized in that: The tube holes (2) of the heat exchange pipe are of the same size and arranged in four columns, the adjacent tube holes (2) in each column are arranged at equal intervals, and a plurality of window units (3) are arranged around each tube hole (2) for increasing the heat exchange area of the fin body (1) and improving the heat transfer efficiency, and the reinforcing connecting plates (4) symmetrically arranged in waves are arranged at the two side edges of each group of fin bodies (1) for reducing boundary turbulence, improving the strength of the fin body (1) and facilitating overall assembly.

2. The high-efficiency heat exchanger's strip fin as claimed in claim 1, wherein: In the four columns of tube holes (2) of the heat exchange pipe, the centers of the tube holes (2) in the same column are on the same straight line, the adjacent two columns of tube holes (2) are arranged in an up-down staggered manner, and a circular arc reinforcing stripe (5) is arranged at the outer edge of each tube hole (2), so that the tube hole (2) has a double-flanged structure for improving the strength of each tube hole (2).

3. The high-efficiency heat exchanger's strip fin as claimed in claim 1, wherein: The distance between the centers of the upper and lower adjacent tube holes (2) in the same column and the nearest tube hole (2) in the adjacent column is the same, so that the three tube holes (2) are arranged in an equilateral triangle.

4. The high efficiency heat exchanger strip fin as claimed in claim 1, wherein: The window unit (3) is a circular arc structure (6) with four equal sizes, which is arranged at the four corners of the tube hole (2) and is arranged in concentric circles with the tube hole (2).

5. The high efficiency heat exchanger strip fin as claimed in claim 4 wherein: In the four window units (3) of each tube hole (2), two of them are arranged above the tube hole (2) in a left-right symmetrical manner, and the other two are arranged below the tube hole (2) in a left-right symmetrical manner, and the two window units (3) above and the two window units (3) below are arranged in an up-down symmetrical manner.

6. The high efficiency heat exchanger strip fin as claimed in claim 5 wherein: In the four window units (3) of each tube hole (2), the separation interval between the two window units (3) above and the two window units (3) below is 30°.

7. The high efficiency heat exchanger strip fin as claimed in claim 1 wherein: The radius of the arc of the reinforcing connecting plate (4) of the fin body (1) is 1.5-2mm for reducing smooth airflow and reducing resistance.

8. The high efficiency heat exchanger strip fin as claimed in claim 7 wherein: The reinforcing rib (7) with the same length as the fin body (1) is arranged between the adjacent two columns of tube holes (2) on the fin body (1), and the stripe width of the reinforcing rib (7) is 2mm.

9. A heat exchanger, characterized by: The heat exchanger is provided with the long strip fin of the high-efficiency heat exchanger according to any one of claims 1-8.

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