Low-noise cooling fin

Abstract

The utility model relates to the technical field of cooling fins, in particular to a low-noise cooling fin which comprises a lower cooling fin, a plurality of containing grooves are formed in the upper end face of the lower cooling fin, a connecting frame is welded to the side wall of the lower cooling fin, a fixing frame is welded to the outer wall of the connecting frame, and an installation groove used for containing the lower cooling fin is reserved in the middle of the fixing frame. Positioning installation holes are formed in the four corners of the fixing frame, the upper end face of the lower cooling fin covers the upper cooling fin, installation bolts are arranged in the positioning installation holes, according to the low-noise cooling fin, the overall structure of the cooling fin is changed into the upper cooling fin and the lower cooling fin, and the cooling performance is guaranteed while noise is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fin technical field especially relates to a low noise fin. BACKGROUND

[0002] The electric control unit of new energy automobile plays an important role in new energy automobile, including various electronic components, such as controller, sensor, battery management system etc., to realize the electric drive, energy management, data transmission etc. of vehicle. Part of components such as main control unit need to be heat treated to meet the environmental and performance requirements of new energy automobile to high temperature, high pressure, high frequency etc., and through the search of relevant technology such as patent (CN118201195A) a kind of fin for new energy automobile PCB, heat generated on the surface of new energy automobile PCB is sucked away by fan, so that heat can be dissipated through the surface of fin and heat dissipation fin, so that fan, fin and heat dissipation fin can dissipate the heat on the surface of new energy automobile PCB, so that heat dissipation is more rapid, but due to the blowing of fan air flow and the vibration generated in the working process of fan, the whole fin will produce larger noise. CONTENT OF UTILITY MODEL

[0003] The utility model aims at solving the shortcomings in the prior art and provides a low noise fin.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] Design a kind of low noise fin, including lower fin, the upper end surface of the lower fin is equipped with multiple accommodating grooves, the side wall of the lower fin is welded with connecting frame, the outer wall of the connecting frame is welded with fixed frame, the middle part of the fixed frame is left with the installation groove for placing lower fin, the four corners of the fixed frame are equipped with positioning mounting hole, the upper end surface of the lower fin is covered with upper fin, mounting bolt is arranged in the positioning mounting hole, and the upper fin is fastened and connected with the fixed frame by mounting bolt.

[0006] Preferably, the upper end surface of the lower fin is equipped with sealing groove, and the outer wall of the upper fin is equipped with sealing frame matched with the sealing groove.

[0007] Preferably, the outer wall of the upper fin is integrally formed with multiple protrusions, and the outer wall of the multiple protrusions is distributed with multiple special-shaped holes.

[0008] Preferably, the upper end surface of the upper fin is provided with a chemical conversion film coating.

[0009] Preferably, the outer wall of the mounting bolt is sleeved with a shock-absorbing spring, and the shock-absorbing spring is clamped between the upper fin and the fixed frame.

[0010] The utility model provides a low noise fin has beneficial effect at in: through setting up upper fin and lower fin, change present integral type's fin, destroy the overall structure of fin, reduce the resonance of fin along with the rotation process of fan, thereby realize the function of reducing noise, the convex block, the accommodating groove structure of setting up further break the structure integrality of fin, further reduce the possibility of resonance with fan, and in order to guarantee the heat dissipation performance of fin, the accommodating groove of setting up injects heat conducting oil, and when the convex block is pressed down, heat conducting oil overflows from the accommodating groove and covers the connecting contact surface of entire upper fin, lower fin, and heat conducting performance is improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is an explosion view of the low noise fin provided by the utility model;

[0012] Figure 2 It is an upper fin structure schematic view of the low noise fin provided by the utility model;

[0013] Figure 3 It is an axial side view of the low noise fin provided by the utility model;

[0014] Figure 4 It is a side view of the low noise fin provided by the utility model.

[0015] In the drawing: 1 chemical conversion film coating, 2 mounting bolt, 3 shock absorbing spring, 4 upper fin, 5 accommodating groove, 6 sealing groove, 7 lower fin, 8 connecting frame, 9 fixed frame, 10 mounting groove, 11 positioning mounting hole, 12 convex block, 13 special-shaped hole, 14 sealing frame. DETAILED DESCRIPTION

[0016] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0017] Referring to Figure 1 A low noise fin, comprising a lower fin 7, a plurality of accommodating grooves 5 are formed on the upper end face of the lower fin 7, a connecting frame 8 is welded to the side wall of the lower fin 7, a fixed frame 9 is welded to the outer wall of the connecting frame 8, the connecting frame 8, the fixed frame 9 and the lower fin 7 are different types of metal components, so as to destroy the overall structure of the entire fin, the mounting groove 10 for placing the lower fin 7 is left in the middle of the fixed frame 9, the positioning mounting hole 11 is formed at the four corners of the fixed frame 9, the upper end face of the lower fin 7 is covered by the upper fin 4, the mounting bolt 2 is arranged in the positioning mounting hole 11, and the upper fin 4 is tightly connected with the fixed frame 9 through the mounting bolt 2.

[0018] Referring to Figure 2, the outer wall of the upper heat dissipation sheet 4 is integrally formed with a plurality of protrusions 12, the sealing groove 6 matches the sealing frame 14 to form a sealing structure, the heat-conducting oil can be injected into the accommodating groove 5, the protrusions 12 move downward into the accommodating groove 5, part of the heat-conducting oil overflows the accommodating groove 5 to fill the gap between the upper heat dissipation sheet 4 and the lower heat dissipation sheet 7, the overall heat conduction performance of the explosion heat dissipation sheet is improved, the overall structure of the heat dissipation sheet is damaged, the resonance of the heat dissipation sheet during the rotation of the fan is inhibited, and the noise reduction function is realized, the outer wall of the plurality of protrusions 12 is distributed with a plurality of special-shaped holes 13, the overall structure of the heat dissipation sheet is further damaged, and the noise reduction effect is improved.

[0019] With reference to Figure 1 The upper end surface of the upper heat dissipation sheet 4 is provided with a chemical conversion film coating 1, the surface flatness of the upper heat dissipation sheet 4 is improved, the friction sound with the airflow of the heat dissipation fan is reduced, and the noise reduction effect is further improved.

[0020] With reference to Figure 3 The outer wall of the mounting bolt 2 is sleeved with a damping spring 3, the damping spring 3 is clamped between the upper heat dissipation sheet 4 and the fixing frame 9, and the damping spring 3 is arranged in cooperation with the mounting bolt 2, so that the upper heat dissipation sheet 3 and the lower heat dissipation sheet 7 can be stably and firmly connected together.

[0021] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A low-noise finned heat sink comprising a lower fin (7), characterized in that, The upper end surface of the lower heat dissipation fin (7) is provided with a plurality of accommodating grooves (5), the side wall of the lower heat dissipation fin (7) is welded with a connecting frame (8), the outer wall of the connecting frame (8) is welded with a fixed frame (9), the middle part of the fixed frame (9) is provided with a mounting groove (10) for placing the lower heat dissipation fin (7), the four corners of the fixed frame (9) are provided with positioning mounting holes (11), the upper end surface of the lower heat dissipation fin (7) is covered with an upper heat dissipation fin (4), mounting bolts (2) are arranged in the positioning mounting holes (11), and the upper heat dissipation fin (4) is fastened and connected with the fixed frame (9) through the mounting bolts (2).

2. A low noise finned heat sink according to claim 1, wherein, The outer edge of the upper end surface of the lower heat dissipation fin (7) is provided with a sealing groove (6), and the outer wall of the upper heat dissipation fin (4) is provided with a sealing frame (14) matched with the sealing groove (6).

3. A low noise finned heat sink according to claim 1 wherein, The outer wall of the upper heat dissipation fin (4) is integrally provided with a plurality of protrusions (12), and the outer wall of the plurality of protrusions (12) is distributed with a plurality of special-shaped holes (13).

4. The low noise finned heat sink of claim 1 wherein, The upper end surface of the upper heat dissipation fin (4) is provided with a chemical conversion film coating (1).

5. The low noise finned heat sink of claim 1 wherein, The outer wall of the mounting bolt (2) is sleeved with a damping spring (3), and the damping spring (3) is clamped between the upper heat dissipation fin (4) and the fixed frame (9).

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