An ultra-thin fin with high heat exchange effect

Abstract

The utility model discloses a kind of fin of ultrathin high heat exchange effect, including fin main body, the fin main body is horizontal sheet body, its thickness is 0.06mm to 0.1mm;The long shape through slot is the through slot of left and right extension, the left and right ends of its two ends shaped elastic positioning sheet include lower bending part, the lower end of the lower bending part of two corresponding left and right is far away, upper end is close, the top of two lower bending parts is shaped upper bending part, the lower end of two upper bending parts is close, upper part is far away;It is small, small, thin, light in volume, in the case where cost is reduced, can improve its heat exchange performance.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation and heat exchange equipment technology, and more specifically to an ultra-thin fin with high heat exchange efficiency. Background Technology

[0002] In existing refrigeration systems, such as the heat pump system of a clothes dryer and the refrigeration system of an air conditioner, both the evaporator and condenser use heat dissipation and heat exchange structures.

[0003] Existing heat exchange structures employ tube heat exchangers, microchannel heat exchangers, and other heat exchange structures. According to the national Class I energy consumption regulations, the corresponding condenser needs to use at least 8 rows of heat exchange tubes, and the refrigerant needs to be R290, with the injection amount controlled within 150g. Under these requirements, if the refrigerant injected into the microchannel heat exchanger exceeds 150g, then it cannot meet the Class I energy consumption requirements.

[0004] Therefore, only tubular heat exchangers can be used. Similarly, since the refrigerant cannot exceed 150g, the piping can only use small-diameter pipes. Existing conventional piping generally uses 5mm diameter pipes to meet the requirements. However, in existing 5mm diameter tube heat exchangers, copper tubes with aluminum fins or aluminum tubes with aluminum fins are generally used. In terms of cost, copper tubes with aluminum fins are very expensive. Therefore, the cost of aluminum tubes with aluminum fins is much lower, which makes more tube heat exchangers using this material available. However, the problem is that its heat exchange effect is not as good as that of tube heat exchangers with copper tubes and aluminum fins because copper tubes have higher thermal conductivity and heat transfer performance than aluminum tubes. Meanwhile, in existing 5mm diameter tube heat exchangers, and even in various tube heat exchangers, the spacing between adjacent rows of tube mounting holes on the fins is generally between 10 and 20, such as 18.2mm, 16.5mm, 19.5mm, and 14.5mm. However, due to the national first-level energy consumption regulations, condensers need to meet this requirement, requiring at least 8 rows of tubes. This greatly increases the area of ​​the entire fins, which in turn greatly increases the volume of the entire tube heat exchanger and its manufacturing cost. Moreover, due to the increase in column spacing, the distance between the pipes also increases, which reduces the turbulence effect of the airflow, resulting in an unsatisfactory heat exchange effect. Furthermore, the spacing between existing fins is controlled by a sleeve formed at the pipe installation through-hole, such as... Figure 9As shown, after the fins are stamped, the inner side of the pipe installation through hole needs to be drawn to form a sleeve. The top surface of the sleeve of the lower fin presses against the bottom surface of the adjacent upper fin to achieve the spacing. Since the sleeve needs to be stamped and drawn from the fin, and the height of the sleeve is generally more than 1.2mm, the thickness of the fin needs to be about 0.15mm or even thicker to draw such a height. This further increases the cost of the fin, as well as the weight and cost of the entire heat exchanger. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an ultra-thin fin with high heat exchange efficiency. It is small in size, small in area, thin in thickness, and light in weight, and can improve its heat exchange performance while reducing costs.

[0006] The solution of this utility model to the aforementioned technical problem is: An ultra-thin fin with high heat exchange efficiency includes a fin body, wherein the fin body is a horizontal fin with a thickness of 0.06 mm to 0.1 mm; The elongated through groove is a through groove that extends left and right. The elastic positioning pieces formed at its left and right ends include lower bent portions. The lower ends of the two corresponding lower bent portions are far apart and the upper ends are close together. The top ends of the two lower bent portions form upper bent portions. The lower ends of the two upper bent portions are close together and the upper ends are far apart. The fin body around the through hole of the tube is formed with multiple left and right extending ventilation grooves. An elongated protrusion is provided above the ventilation groove. The bottom ends of the vertical parts on the left and right sides of the elongated protrusion are formed at the left and right ends of the ventilation groove.

[0007] The sidewall of the through hole is formed with an upwardly extending sleeve. The side of all the corresponding elongated protrusions on the left side of the sleeve forms an arc-shaped air guide groove with the side of the sleeve near the sleeve and the outer wall of the sleeve. The side of all the corresponding elongated protrusions on the right side of the sleeve forms an arc-shaped air guide groove with the side of the sleeve near the sleeve and the outer wall of the sleeve. The elongated protrusions at the front and rear of the sleeve are located near the front or rear side of the sleeve.

[0008] A supporting spring device is provided in the middle of the elongated protrusion at the front or rear of the through hole of the pipe connection. Its specific structure is as follows: the elongated protrusions at the front or rear of the through hole are the left elongated protrusion and the right elongated protrusion. The fin body directly below the left elongated protrusion and the right elongated protrusion has a through groove. The fin body between the two through grooves has an elongated through groove. The left and right sides of the elongated through groove have upwardly bent and extended elastic positioning pieces.

[0009] In all the aforementioned through-holes, all through-holes at the same lateral position are arranged in a row. Multiple rows of through-holes are formed on the fin body. The through-holes in adjacent rows are parallel to each other. The spacing between any two adjacent through-holes is the same. The distance between the central axes of any two adjacent through-holes in the same row is the same.

[0010] In the adjacent rows of through-holes, the distance between the transverse centerline of the center of the through-hole in the preceding row and the transverse centerline of the center of the through-hole in the following row is 4.0 mm to 10.0 mm.

[0011] The pipe body installed in the through-hole needs to match the through-hole. The outer diameter of the installed pipe body is 4.0mm to 10.0mm. Therefore, the inner diameter of the through-hole is 4.2mm to 8.2mm. For example, when the inner diameter of the through-hole is 5.2mm, the outer diameter of the installed pipe body is 5.0mm.

[0012] In each column of through-holes, the distance between the central axes of any two adjacent through-holes is 10.0 mm to 20.0 mm.

[0013] The outstanding effect of this utility model is: Compared with existing technologies, 1. Because its support spring device adopts a stamping and forming of an elongated through slot, the part originally in the elongated through slot is formed into two upwardly extending elastic positioning pieces. The spacing is controlled and supported by pressing the elastic positioning pieces against the upper fin body, instead of using a drawn and stamped sleeve body for support. Therefore, the thickness of its fin body can be 0.06mm to 0.1mm, which greatly reduces its manufacturing cost and weight.

[0014] 2. The distance between the transverse centerline of the center of the pipe connection through hole in the preceding column and the transverse centerline of the center of the pipe connection through hole in the following column is 4.0mm to 10.0mm. This distance allows for the installation of the same number of pipe connection through holes as the existing ones, while greatly reducing the volume of the fin body, thereby reducing the manufacturing cost and weight of the fin body. Moreover, the reduced spacing increases the turbulence effect of the airflow and improves the heat exchange effect.

[0015] 3. On the left side of the sleeve, all the corresponding elongated protrusions form an arc-shaped air guide groove between the side of the sleeve and the outer wall of the sleeve. On the right side of the sleeve, all the corresponding elongated protrusions form an arc-shaped air guide groove between the side of the sleeve and the outer wall of the sleeve. The arc-shaped guide grooves increase the guiding effect of airflow at this location, thereby improving the heat exchange effect between the airflow and the tube at the sleeve.

[0016] 4. Its elongated protrusion is also formed by stamping the fin body and then stamping the corresponding air passage upward into an elongated protrusion. This not only increases the strength of the entire fin body, but also increases the turbulence effect of the split flow and increases the heat exchange effect. Attached Figure Description

[0017] Figure 1 This is a partial structural schematic diagram of the present invention; Figure 2 This is a partial structural diagram of the angle-changing part of this utility model; Figure 3 This is a partial enlarged view of the present invention; Figure 4 This is a partial top view of the present invention; Figure 5 This is a partial structural schematic diagram of the elastic positioning piece of this utility model; Figure 6 This is a partial structural diagram of the two finned bodies of this utility model stacked together. Figure 7 The diagram shows a comparison of airflow between a radiator made with a finned body without a supporting spring device and a radiator made with a finned body of this invention. Figure 8 This is a temperature comparison chart of a radiator made with a finned body without a supporting spring device and a radiator made with a finned body of this utility model. Figure 9 This is a partial structural diagram of the existing fin stacking; Figure 10 This is a data comparison chart of existing copper condensers, copper evaporators, existing aluminum condensers and evaporators, and aluminum condensers and evaporators made using this utility model; Figure 11 yes Figure 10 Screenshot of simulation data software for a copper evaporator; Figure 12 yes Figure 10 Screenshot of simulation data software for the aluminum evaporator fabricated using this embodiment; Figure 13 This is a weight comparison chart of existing copper evaporators, existing aluminum evaporators, and aluminum evaporators made using this utility model; Figure 14 This is a weight comparison chart of existing copper condensers, existing aluminum condensers, and aluminum condensers made using this utility model; Figure 15This is a temperature comparison chart showing the heat exchangers with finned bodies without supporting spring devices and those with inlet speeds of 1m / s, 3m / s, and 5m / s, and the heat exchangers with finned bodies of this invention. Detailed Implementation

[0018] For example, see below. Figures 1 to 8 As shown, an ultra-thin fin with high heat exchange efficiency includes a fin body 10, on which a plurality of through holes 11 for tube connection and a plurality of support spring devices 20 are formed; in this embodiment, the through holes 11 are for installing heat exchange tubes with a diameter of 5.0 mm, and the inner diameter of the through holes 11 is 5.2 mm.

[0019] In all the described through holes 11, all through holes 11 at the same lateral position are arranged in a row. Multiple rows of through holes 11 are formed on the fin body 10. The through holes 11 in adjacent rows are parallel to each other. The spacing between each pair of adjacent through holes 11 is the same. The distance between the central axes of each pair of adjacent through holes 11 in the same row is the same.

[0020] Furthermore, the fin body 10 surrounding the through hole 11 is formed with a plurality of left and right extending ventilation grooves 12, and an elongated protrusion 13 is provided above the ventilation groove 12. The bottom ends of the vertical parts on the left and right sides of the elongated protrusion 13 are formed at the left and right ends of the ventilation groove 12.

[0021] The sidewall of the through-hole 11 is formed with an upwardly extending sleeve portion 14 (in the partial drawing, it is cylindrical; in actual production, its top end is formed with an outwardly extending arc-shaped annular flange). On the left side of the sleeve portion 14, all the corresponding elongated protrusions 13 form an arc-shaped air guide groove 1 between the side of the sleeve portion 14 and the outer sidewall of the sleeve portion 14. On the right side of the sleeve portion 14, all the corresponding elongated protrusions 13 form an arc-shaped air guide groove 1 between the side of the sleeve portion 14 and the outer sidewall of the sleeve portion 14. The elongated protrusions 13 at the front and rear of the sleeve portion 14 are located near the front or rear side of the sleeve portion 14.

[0022] Among them, a support spring device 20 is provided in the middle of the elongated protrusion 13 at the front or rear of the through hole 11. Its specific structure is as follows: the elongated protrusion 13 at the front or rear of the through hole 11 is divided into a left elongated protrusion 131 and a right elongated protrusion 132. A through groove 133 is formed on the fin body 10 directly below the left elongated protrusion 131 and the right elongated protrusion 132. An elongated through groove 21 is formed on the fin body 10 between the two through grooves 133. Elastic positioning pieces 22 are formed on the left and right sides of the elongated through groove 21, which are bent upward and extended to realize the spacing between adjacent fin bodies 10.

[0023] Furthermore, the elongated through groove 21 is a through groove extending left and right, and the elastic positioning pieces 22 formed at its left and right ends include lower bent portions 221. The lower ends of the two corresponding lower bent portions 221 are far apart, and the upper ends are close together. The top ends of the two lower bent portions 221 are formed into upper bent portions 222. The lower ends of the two upper bent portions 222 are close together, and the upper ends are far apart. The upper bent portion 222 and the lower bent portion 221 of each elastic positioning piece 22 form an angle of 90° to 120°. In this embodiment, the angle is 110°. This angle can ensure that the elastic positioning piece 22 has sufficient elasticity and strength to provide support.

[0024] The height of the elastic positioning piece 22 is 1.0mm to 2.0mm. In this embodiment, its specific height is 1.5mm, the length from the upper bent portion 222 to the bent end is 0.7mm, and the length from the lower bent portion 221 to the bent end is 1.2mm.

[0025] Furthermore, the fin body 10 is a horizontal aluminum foil sheet with a thickness of 0.06mm to 0.1mm. In this embodiment, a 0.08mm aluminum foil sheet is used. Since the sleeve part 14 in this embodiment is not used to support the spacing between two adjacent fin bodies 10, its height is not required. Instead, the spacing between two adjacent fin bodies 10 is controlled by the elastic positioning piece 22. Therefore, the thickness of the fin body can be 0.06mm to 0.1mm, which greatly reduces its manufacturing cost and weight.

[0026] In this embodiment, the elongated protrusion 13 can improve the strength of the fin body 10. At the same time, the elongated protrusion 13 and the air vent 12 can increase the obstruction effect of airflow and improve the turbulence effect, thereby improving the heat exchange effect.

[0027] Furthermore, in the adjacent rows of through-holes 11, the distance between the transverse centerline of the center of the through-hole 11 in the preceding row and the transverse centerline of the center of the through-hole 11 in the following row, i.e., the row spacing, is 4.0 mm to 10.0 mm.

[0028] In this embodiment, the column spacing is 6.35±0.03mm. This distance allows for the installation of the same number of through-holes 11 as existing ones, while significantly reducing the volume of the fin body 10, thereby reducing the manufacturing cost and weight of the fin body 10. Furthermore, the reduced spacing increases the turbulence effect of the airflow and improves the heat exchange effect.

[0029] This embodiment has 9 rows of through holes 11 for pipe connection.

[0030] Furthermore, in each column of through-holes 11, the distance between the central axes of any two adjacent through-holes 11, i.e. the row spacing, is 10.0 mm to 20.0 mm. In this embodiment, the row spacing is 14.70 ± 0.03 mm. In this embodiment, the two adjacent columns of through holes 11 are staggered, that is, the corresponding through hole 11 in the front column is opposite to the two corresponding through holes 11 in the back column.

[0031] Furthermore, the foremost and rearmost parts of all the corresponding elongated protrusions 13 on the left side of the sleeve portion 14 are inclined walls, which extend obliquely tangentially along the front or rear part of the left side of the sleeve portion 14.

[0032] like Figure 7 and Figure 8 As shown, comparing the radiator made of aluminum heat exchanger with the fins removed after removing the support spring device 20 in this embodiment (left side of the figure) with the radiator made of aluminum heat exchange tube installed in this embodiment (right side of the figure), it can be seen that the turbulence effect is better with the support spring device 20, and the temperature control is also better.

[0033] like Figure 15 As shown, this is a comparison of the average outlet temperatures of the radiator with aluminum heat exchange tubes installed on the fins after removing the support spring device 20 (the first radiator in the figure) and the radiator with aluminum heat exchange tubes installed on the fins in this embodiment (the second radiator in the figure) at inlet velocities of 1m / s, 3m / s, and 5m / s. It can be seen from the figure that the radiator with aluminum heat exchange tubes installed on the fins after removing the support spring device 20 has a poor temperature performance. At the same time, it is more beneficial to the heat dissipation effect at lower flow rates, while increasing the flow rate reduces its heat dissipation effect.

[0034] Meanwhile, the condenser and evaporator manufactured by installing aluminum heat exchange tubes in this embodiment (shown in the figure as the modified evaporator and modified condenser) are compared with existing copper condensers, copper evaporators, and existing aluminum condensers and evaporators (shown in the figure as the original evaporator and original condenser). Figure 10As shown, it uses R134A refrigerant. The specifications and structures of the products being compared are basically similar. It can be seen that the heat exchange of the evaporator using this embodiment exceeds that of the copper evaporator, and the heat exchange of the condenser using this embodiment is the same as that of the copper condenser. This effect is comparable to that of copper heat exchangers, while the cost is greatly reduced.

[0035] in Figure 11 and Figure 12 yes Figure 10 The screenshots shown are simulation data software screenshots of the copper evaporator and the aluminum evaporator using this embodiment. The remaining screenshots are omitted and not shown.

[0036] And such Figure 13 and Figure 14 As shown, the condenser and evaporator made by installing aluminum heat exchange tubes in this embodiment under the condition that the heat exchange generated is the same or basically the same (the modified evaporator and modified condenser are shown in the figure), and their weights are compared with those of the existing copper condenser, copper evaporator, and existing aluminum condenser and evaporator (the original evaporator and original condenser are shown in the figure). In this embodiment, the evaporator fins made after installing aluminum heat exchange tubes are 335g lighter than the original evaporator fins, while the aluminum tubes are 62g heavier, resulting in a total weight reduction of 273g.

[0037] In this embodiment, the condenser fins made after installing aluminum heat exchange tubes weigh 951g less than the original condenser fins, while the aluminum tubes weigh 137g more, resulting in a total weight reduction of 814g.

[0038] In conclusion, this embodiment can significantly reduce weight, lower manufacturing costs, and improve heat exchange efficiency.

[0039] The radiator, condenser, and evaporator described in this embodiment are all types of heat exchangers.

[0040] Finally, the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, all equivalent technical solutions also fall within the scope of the present utility model, and the patent protection scope of the present utility model should be defined by the claims.

Claims

1. An ultra-thin fin with high heat exchange efficiency, comprising a fin body (10), characterized in that: The fin body (10) is formed with multiple through holes (11) for connecting pipes and multiple support spring devices (20). The support spring device (20) includes an elongated through groove (21) formed on the fin body (10), and elastic positioning pieces (22) that are bent upward and extended on the left and right sides of the elongated through groove (21) to achieve the spacing between adjacent fin bodies (10).

2. The ultra-thin fin with high heat exchange efficiency according to claim 1, characterized in that: The elongated through groove (21) is a through groove extending to the left and right. The elastic positioning pieces (22) formed at its left and right ends include lower bending portions (221). The lower ends of the two corresponding lower bending portions (221) are far apart, and the upper ends are close together. The top ends of the two lower bending portions (221) are formed into upper bending portions (222). The lower ends of the two upper bending portions (222) are close together, and the upper ends are far apart. The upper bend (222) and lower bend (221) of each elastic positioning piece (22) form an angle of 90° to 120°.

3. The ultra-thin fin with high heat exchange efficiency according to claim 1, characterized in that: Multiple left-right extending ventilation grooves (12) are formed on the fin body (10) around the through hole (11) of the tube connection. An elongated protrusion (13) is provided above the ventilation groove (12). The bottom ends of the vertical parts on the left and right sides of the elongated protrusion (13) are formed at the left and right ends of the ventilation groove (12).

4. The ultra-thin fin with high heat exchange efficiency according to claim 3, characterized in that: The sidewall of the through hole (11) is formed with an upwardly extending sleeve (14). On the left side of the sleeve (14), all the corresponding elongated protrusions (13) form an arc-shaped air guide groove (1) between the side of the sleeve (14) and the outer sidewall of the sleeve (14). On the right side of the sleeve (14), all the corresponding elongated protrusions (13) form an arc-shaped air guide groove (1) between the side of the sleeve (14) and the outer sidewall of the sleeve (14). The elongated protrusions (13) at the front and rear of the sleeve part (14) are located near the front or rear side of the sleeve part (14).

5. The ultra-thin fin with high heat exchange efficiency according to claim 1, characterized in that: The fin body (10) is a horizontal aluminum foil sheet with a thickness of 0.06 mm to 0.1 mm.

6. The ultra-thin fin with high heat exchange efficiency according to claim 5, characterized in that: The height of the elastic positioning piece (22) is 1.0 mm to 2.0 mm.

7. The ultra-thin fin with high heat exchange efficiency according to claim 1, characterized in that: In all the described through holes (11), all through holes (11) at the same lateral position are arranged in a row. Multiple rows of through holes (11) are formed on the fin body (10). The through holes (11) in adjacent rows are parallel to each other. The spacing between each pair of adjacent through holes (11) is the same. The distance between the central axes of each pair of adjacent through holes (11) in the same row is the same.

8. The ultra-thin fin with high heat exchange efficiency according to claim 7, characterized in that: In the adjacent rows of through holes (11), the distance between the transverse center line of the center of the through hole (11) in the preceding row and the transverse center line of the center of the through hole (11) in the following row is 4.0 mm to 10.0 mm.

9. The ultra-thin fin with high heat exchange efficiency according to claim 7, characterized in that: In each column of through-holes (11), the distance between the central axes of any two adjacent through-holes (11) is 10.0 mm to 20.0 mm.

10. The ultra-thin fin with high heat exchange efficiency according to claim 4, characterized in that: The foremost and rearmost parts of all the corresponding elongated protrusions (13) on the left side of the sleeve part (14) are inclined walls on the side closest to the sleeve part (14), which extend obliquely tangentially along the front or rear part of the left side of the sleeve part (14).

11. The ultra-thin fin with high heat exchange efficiency according to claim 1, characterized in that: A support spring device (20) is provided in the middle of the elongated protrusion (13) at the front or rear of the through hole (11). Its specific structure is as follows: the elongated protrusion (13) at the front or rear of the through hole (11) is divided into a left elongated protrusion (131) and a right elongated protrusion (132). A through groove (133) is formed on the fin body (10) directly below the left elongated protrusion (131) and the right elongated protrusion (132). An elongated through groove (21) is formed on the fin body (10) between the two through grooves (133). An elastic positioning piece (22) that bends upward and extends is formed on the left and right sides of the elongated through groove (21).

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