Improved ultra-thin heat exchange fin

Abstract

The utility model discloses an improved ultra -thin heat exchange fin, including fin main part, the fin main part on the forming has a plurality of pipe -through connection through -hole, the left and right sides department of every pipe -through connection through -hole all form on the fin main part and have a plurality of left and right extension's front -back arrangement's breathable through -groove, and the all breathable through -groove of one side of pipe -through connection through -hole forms the breathable through -groove group, and the top of breathable through -groove is equipped with the long convex part, and the bottom end of the left and right sides of long convex part's oblique department forms in the left and right ends of breathable through -groove, the front and rear of every breathable through -groove group's middle part form on the fin main part and have the left and right extension's long through -groove, and the left side wall of one side's long through -groove forms and has the vertical bending's support positioning piece that extends upwards, and the right side wall of the other side's long through -groove forms and has the vertical bending's support positioning piece that extends upwards. It is thin, light in weight, and the manufacturing cost is low.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation and heat exchange equipment technology, and more specifically to an improved ultra-thin heat exchange fin. 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 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, existing 5mm diameter tube heat exchangers generally use copper tubes with aluminum fins or aluminum tubes with aluminum fins. Considering the cost, copper tubes with aluminum fins are very expensive. Therefore, aluminum tubes with aluminum fins are much cheaper, making more tube heat exchangers using this material available.

[0005] Meanwhile, the spacing between existing fins is controlled by a sleeve formed at the pipe installation through-hole, such as... Figure 6 As 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 spacing control. Since the sleeve needs to be stamped and drawn from the fin, and the height of the sleeve is generally above 1.2mm, the thickness of the fin needs to be around 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

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide an improved ultra-thin heat exchange fin that is thin, lightweight, and has low manufacturing cost.

[0007] The solution of this utility model to the aforementioned technical problem is: An improved ultrathin heat exchange fin includes a fin body, on which a plurality of through holes for connecting tubes are formed; On the fin body at both sides of each through-hole, there are multiple ventilation slots that extend left and right and are arranged front and back. All the ventilation slots on one side of the through-hole form a ventilation slot group. A long protrusion is provided above the ventilation slot. The bottom ends of the oblique parts on the left and right sides of the long protrusion are formed at the left and right ends of the ventilation slot. Each ventilated channel group has elongated channels extending to the left and right on the fin body at the middle of the front and rear. On the left side wall of one elongated channel, there is an upwardly extending vertically bent support and positioning piece, and on the right side wall of the other elongated channel, there is an upwardly extending vertically bent support and positioning piece.

[0008] The ventilation channel group includes three elongated channels arranged in a front-to-back manner. The distance between the left and right ends of the front and rear elongated channels is greater than the distance between the left and right ends of the middle elongated channel. The ends of the elongated protrusions at the front and rear are close to the sidewalls of the corresponding through-holes.

[0009] 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 (14) forms an arc-shaped air guide groove between the side of 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 between the side of the sleeve and the outer wall of the sleeve.

[0010] The fin body is a horizontal aluminum foil sheet with a thickness of 0.06 mm to 0.1 mm, and the height of the supporting positioning piece is 1.0 mm to 2.0 mm. The top of the support positioning piece has a horizontally bent end bend on the side away from the corresponding elongated through groove. The bottom of the support positioning piece has an outwardly extending vertical protrusion on the side wall away from the corresponding elongated through groove. A vertical groove is formed on the inner side of the support positioning piece corresponding to the vertical protrusion.

[0011] 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.

[0012] The outstanding effect of this utility model is: Compared with existing technologies, its support spring device uses a stamped elongated slot to form two upward-extending support positioning pieces in the original part of the elongated slot. The support positioning pieces press against the upper fin body to achieve spacing control and support, instead of using a drawn 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.

[0013] 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.

[0014] 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 improves the heat exchange effect. Attached Figure Description

[0015] 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 support and positioning piece of this utility model; Figure 6 This is a partial structural diagram of the existing fin stacking; Figure 7 This is a partial structural schematic diagram of the fin body of this utility model. Detailed Implementation

[0016] For example, see below. Figures 1 to 7 As shown, an improved ultrathin heat exchange fin includes a fin body 10, on which a plurality of through holes 11 for tube connection 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 5.3 ± 0.03 mm.

[0017] 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.

[0018] On the left and right sides of each through-hole 11, there are multiple ventilation slots 12 arranged in a front-to-back pattern extending left and right. All the ventilation slots 12 on one side of the through-hole 11 form a ventilation slot group. An elongated protrusion 13 is provided above the ventilation slot 12. The bottom ends of the oblique portions on the left and right sides of the elongated protrusion 13 are formed at the left and right ends of the ventilation slot 12. An upwardly extending sleeve portion 14 is formed on the sidewall of the through-hole 11. An arc-shaped air guide groove 1 is formed between the side of all corresponding elongated protrusions 13 on the left side of the sleeve portion 14 and the outer wall of the sleeve portion 14. Similarly, an arc-shaped air guide groove 1 is formed between the side of all corresponding elongated protrusions 13 on the right side of the sleeve portion 14 and the outer wall of the sleeve portion 14. In this embodiment, the height of the sleeve portion 14 is 0.7 mm.

[0019] Furthermore, each ventilated channel group has elongated channels 21 extending to the left and right on the fin body 10 at the middle of the front and rear. On the left side wall of one elongated channel 21, there is an upwardly extending vertically bent support and positioning piece 22, and on the right side wall of the other elongated channel 21, there is an upwardly extending vertically bent support and positioning piece 22.

[0020] The breathable channel group includes three elongated channels 21 arranged in a front-to-back manner. The distance between the left and right ends of the front and rear elongated channels 21 is greater than the distance between the left and right ends of the middle elongated channel 21. The ends of the elongated protrusions 13 at the front and rear are close to the sidewalls of the corresponding through-holes 11.

[0021] The fin body 10 is a horizontal aluminum foil sheet with a thickness of 0.06 mm to 0.1 mm. In this embodiment, the fin body 10 has a thickness of 0.095 mm, and the height of the supporting positioning piece 22 is 1.0 mm to 2.0 mm. Since the sleeve part 14 in this embodiment is not used to support and realize 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 supporting positioning piece 22. Therefore, the thickness of the fin body can be 0.06 mm to 0.1 mm, which greatly reduces its manufacturing cost and weight.

[0022] The top of the support positioning piece 22 has a horizontally bent end bend 221 formed on the side away from the corresponding elongated through groove 21. The bottom of the support positioning piece 22 has an outwardly extending vertical protrusion formed on the side wall away from the corresponding elongated through groove 21. A vertical groove is formed on the inner side of the support positioning piece 22 corresponding to the vertical protrusion. The end bend 221 and the vertical protrusion increase the strength of the support positioning piece 22. During installation and use, the spacing is controlled by the top of the support positioning piece 22 pressing against the bottom surface of the upper fin body 10.

[0023] The height of the support positioning piece 22 is 1.0mm to 2.0mm, and in this embodiment it is 1.2mm.

[0024] Furthermore, in the adjacent rows of through holes 11, the distance between the transverse centerline of the center of the previous row of through holes 11 and the transverse centerline of the center of the next row of through holes 11 is 4.0 mm to 16.0 mm; in this embodiment, it is 12.7 ± 0.03 mm.

[0025] 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, and in this embodiment it is 14.7 ± 0.03 mm.

[0026] Furthermore, the foremost and rearmost parts of all the elongated protrusions 13 on the left side of the sleeve portion 14 are inclined walls, extending obliquely tangentially along the front or rear of the left side of the sleeve portion 14. The foremost and rearmost parts of all the elongated protrusions 13 on the right side of the sleeve portion 14 are inclined walls, extending obliquely tangentially along the front or rear of the left side of the sleeve portion 14.

[0027] 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.

[0028] 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.

[0029] 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 improved ultrathin heat exchange fin, comprising a fin body (10), characterized in that: The fin body (10) has multiple through holes (11) formed on it. On the left and right sides of each through-hole (11), there are multiple air vents (12) extending left and right and arranged front and back. All the air vents (12) on one side of the through-hole (11) form an air vent group. An elongated protrusion (13) is provided above the air vent (12). The bottom ends of the oblique portions on the left and right sides of the elongated protrusion (13) are formed at the left and right ends of the air vent (12). Each ventilated channel group has elongated channels (21) extending to the left and right on the fin body (10) at the middle of the front and rear. On the left side wall of one elongated channel (21), there is an upwardly extending vertically bent support and positioning piece (22), and on the right side wall of the other elongated channel (21), there is an upwardly extending vertically bent support and positioning piece (22). The breathable channel group includes three elongated channels (21) arranged in front and back. The distance between the left and right ends of the elongated channels (21) at the front and rear is greater than the distance between the left and right ends of the elongated channels (21) in the middle. The ends of the elongated protrusions (13) at the front and rear are close to the sidewalls of the corresponding through-holes (11). The fin body (10) is a horizontal aluminum foil sheet with a thickness of 0.06 mm to 0.1 mm, and the height of the supporting positioning piece (22) is 1.0 mm to 2.0 mm. The top of the support positioning piece (22) is formed with a horizontally bent end bend (221) on the side away from the corresponding elongated through groove (21). The bottom of the support positioning piece (22) is formed with an outwardly extending vertical protrusion strip on the side wall away from the corresponding elongated through groove (21). A vertical groove is formed on the inner side of the support positioning piece (22) corresponding to the vertical protrusion strip.

2. The improved ultrathin heat exchange fin according to claim 1, characterized in that: The sidewall of the through hole (11) is formed with an upwardly extending sleeve portion (14). 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).

3. The improved ultrathin heat exchange fin 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.

4. An improved ultrathin heat exchange fin according to claim 3, 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 16.0 mm. 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.

5. An improved ultrathin heat exchange fin according to claim 2, characterized in that: The frontmost and rearmost parts of all the 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 of the left side of the sleeve part (14). The frontmost and rearmost parts of all the elongated protrusions (13) on the right 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 of the left side of the sleeve part (14).

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