A heat dissipation module

Abstract

The present invention discloses a heat dissipation module, which includes a heat dissipation fan and a heat sink. The heat dissipation fan includes a housing and a fan wheel. The fan wheel is installed inside the housing. The housing includes a bottom plate (1), a circumferential enclosing plate (2), and a cover plate (3). The fan wheel includes a hub (4) and blades (5). A first air inlet (6) is provided on the cover plate, and a second air inlet (7) is provided on the bottom plate. A plurality of flow guiding ribs (10) are provided inside the second air inlet (7). It is characterized in that: the circumferential thicknesses H of the first flow guiding rib (101), the second flow guiding rib (102), and the third flow guiding rib (103) are not equal to each other. Through the design of a plurality of flow guiding ribs, the circumferential thicknesses H of the plurality of flow guiding ribs are not equal to each other, and the present invention can effectively reduce the noise level of the heat dissipation fan.

Description

Technical Field

[0001] The present invention relates to the technical field of heat dissipation for electronic products, and particularly relates to a heat dissipation module for electronic products. Background Art

[0002] The heat dissipation module includes a heat dissipation fan and a heat sink, and the heat dissipation module is widely used for heat dissipation of various electronic products / electronic devices. However, the existing heat dissipation fans have the problem of relatively large noise. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a heat dissipation module. Through the design of multiple flow guiding ribs, the circumferential thicknesses H of the first flow guiding rib, the second flow guiding rib, and the third flow guiding rib are not equal (H1 < H2 < H3), which can effectively reduce the noise level of the heat dissipation fan. Through the design of the inclined section, multiple grooves are provided on the inclined section, and the multiple grooves are arranged in an array along the inclined section, which can further reduce the noise level of the heat dissipation fan.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] A heat dissipation module, which includes a heat dissipation fan and a heat sink. The heat dissipation fan includes a housing and an impeller. The impeller is installed inside the housing. The housing includes a bottom plate (1), a circumferential enclosing plate (2), and a cover plate (3). The circumferential enclosing plate is connected between the bottom plate and the cover plate. The impeller includes a hub (4) and blades (5). Multiple blades are evenly distributed along the circumferential direction on the outer periphery of the hub. The impeller rotates under the drive of a motor. The motor is arranged on the hub and connected to the bottom plate. A first air inlet (6) is provided on the cover plate, a second air inlet (7) is provided on the bottom plate, the housing has an air outlet (8), and a heat sink (9) is provided on the downstream side of the air outlet (8). Multiple flow guiding ribs (10) are provided in the second air inlet (7), and the characteristics are that: the flow guiding ribs include a first flow guiding rib (101), a second flow guiding rib (102), and a third flow guiding rib (103), and the circumferential thicknesses H of the first flow guiding rib, the second flow guiding rib, and the third flow guiding rib are not equal.

[0006] Further, along the air flow direction, the circumferential thicknesses H1, H2, and H3 of the first flow guiding rib (101), the second flow guiding rib (102), and the third flow guiding rib (103) increase in sequence, that is, H1 < H2 < H3.

[0007] Further, the multiple flow guiding ribs (10) are evenly distributed along the circumferential direction. An X - Y coordinate system is established with the center of the impeller as the origin. The Y axis is parallel to the direction of the air outlet (8). The third flow guiding rib (103) is parallel to the Y axis, and there is a spacing G between the third flow guiding rib and the Y axis. The multiple flow guiding ribs (10) are respectively tangent to the base of the motor.

[0008] Further, the blade (5) includes a straight section (51) and an inclined section (52). The radially outer end of the inclined section is connected to the straight section, and the radially inner end of the inclined section is connected to the outer periphery of the hub (4). A plurality of grooves (53) are provided on the inclined section, and the plurality of grooves are distributed in an array along the inclined section.

[0009] Further, the plurality of grooves (53) correspond to and are adjacent to the second air inlet (7), and the outer diameter of the inclined section (52) is equal to the outer diameter of the second air inlet, and the inner diameter of the inclined section is greater than the inner diameter of the second air inlet.

[0010] Further, the groove (53) is a U-shaped groove or a semi-circular groove.

[0011] In a heat dissipation module of the present invention, through the design of a plurality of flow guiding ribs, the circumferential thicknesses H of the first flow guiding rib, the second flow guiding rib, and the third flow guiding rib are not equal (H1 < H2 < H3), which can effectively reduce the noise level of the cooling fan. Through the design of the inclined section, a plurality of grooves are provided on the inclined section, and the plurality of grooves are distributed in an array along the inclined section, which can further reduce the noise level of the cooling fan. Description of the Drawings

[0012] Figure 1 is a front view structural schematic diagram of the heat dissipation module of the present invention;

[0013] Figure 2 is a top view structural schematic diagram of the heat dissipation module of the present invention.

[0014] In the figure: bottom plate 1, circumferential enclosing plate 2, cover plate 3, hub 4, blade 5, first air inlet 6, second air inlet 7, air outlet 8, heat sink 9, flow guiding rib 10, straight section 51, inclined section 52, groove 53, first flow guiding rib 101, second flow guiding rib 102, third flow guiding rib 103. Detailed Embodiments

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0016] The present invention will be further described in detail below with reference to the drawings.

[0017] As Figure 1-2As shown, a heat dissipation module includes a heat dissipation fan and a heat sink 9. The heat dissipation fan includes a housing and a fan wheel. The fan wheel is installed inside the housing. The housing includes a bottom plate 1, a circumferential enclosing plate 2, and a cover plate 3. The circumferential enclosing plate 2 is connected between the bottom plate 1 and the cover plate 3. The fan wheel includes a hub 4 and blades 5. A plurality of blades 5 are evenly distributed circumferentially on the outer periphery of the hub 4. The fan wheel rotates driven by a motor. The motor is arranged on the hub 4 and connected to the bottom plate 1. A first air inlet 6 is provided on the cover plate 3, and a second air inlet 7 is provided on the bottom plate 1. The housing has an air outlet 8, and a heat sink 9 is provided on the downstream side of the air outlet 8. A plurality of flow guiding ribs 10 are provided in the second air inlet 7. It is characterized in that: the flow guiding ribs 10 include a first flow guiding rib 101, a second flow guiding rib 102, and a third flow guiding rib 103, and the circumferential thicknesses H of the first flow guiding rib 101, the second flow guiding rib 102, and the third flow guiding rib 103 are not equal to each other.

[0018] Further, along the air flow direction, the circumferential thicknesses H1, H2, and H3 of the first flow guiding rib 101, the second flow guiding rib 102, and the third flow guiding rib 103 increase in sequence, that is, H1 < H2 < H3.

[0019] A heat dissipation module of the present invention, through the design of a plurality of flow guiding ribs 10, makes the circumferential thicknesses H of the first flow guiding rib 101, the second flow guiding rib 102, and the third flow guiding rib 103 not equal to each other (H1 < H2 < H3), and can effectively reduce the noise level of the heat dissipation fan.

[0020] Further, a plurality of flow guiding ribs 10 are evenly distributed circumferentially. An X - Y coordinate system is established through the center of the fan wheel. The Y axis is parallel to the direction of the air outlet 8. The third flow guiding rib 103 is parallel to the Y axis, and there is a spacing G between the third flow guiding rib 103 and the Y axis. A plurality of flow guiding ribs 10 are respectively tangent to the base of the motor.

[0021] Further, the blade 5 includes a straight section 51 and an inclined section 52. The radially outer end of the inclined section 52 is connected to the straight section 51, and the radially inner end of the inclined section 52 is connected to the outer periphery of the hub 4. A plurality of grooves 53 are provided on the inclined section 52, and the plurality of grooves 53 are distributed in an array along the inclined section 52.

[0022] The plurality of grooves 53 correspond to and are adjacent to the second air inlet 7, and the outer diameter of the inclined section 52 is equal to the outer diameter of the second air inlet 7, and the inner diameter of the inclined section 52 is greater than the inner diameter of the second air inlet 7. The groove 53 is a U - shaped groove or a semi - circular groove.

[0023] A heat dissipation module of the present invention, through the design of the inclined section 52, with a plurality of grooves 53 provided on the inclined section 52 and distributed in an array along the inclined section 52, can further reduce the noise level of the heat dissipation fan.

[0024] A heat dissipation module of the present invention, through the design of a plurality of flow guiding ribs 10, makes the circumferential thicknesses H of the first flow guiding rib 101, the second flow guiding rib 102, and the third flow guiding rib 103 unequal (H1 < H2 < H3), which can effectively reduce the noise level of the cooling fan. Through the design of the inclined section 52, a plurality of grooves 53 are provided on the inclined section 52, and the plurality of grooves 53 are arranged in an array along the inclined section 52, which can further reduce the noise level of the cooling fan.

[0025] The above embodiments are illustrative of the present invention, not restrictive thereof. It will be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the protection scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat dissipation module, which includes a heat dissipation fan and a heat sink. The heat dissipation fan includes a housing and a fan wheel. The fan wheel is installed inside the housing. The housing includes a bottom plate (1), a circumferential enclosing plate (2), and a cover plate (3). The circumferential enclosing plate is connected between the bottom plate and the cover plate. The fan wheel includes a hub (4) and blades (5). A plurality of blades are evenly distributed circumferentially on the outer periphery of the hub. The fan wheel rotates driven by a motor. The motor is arranged on the hub and connected to the bottom plate. A first air inlet (6) is provided on the cover plate, and a second air inlet (7) is provided on the bottom plate. The housing has an air outlet (8), and a heat sink (9) is provided on the downstream side of the air outlet. A plurality of flow guiding ribs (10) are provided in the second air inlet (7); It is characterized in that: The flow guiding ribs include a first flow guiding rib (101), a second flow guiding rib (102), and a third flow guiding rib (103). The circumferential thickness H of the first flow guiding rib, the second flow guiding rib, and the third flow guiding rib are not equal to each other. And along the air flow direction, the circumferential thicknesses H1, H2, and H3 of the first flow guiding rib (101), the second flow guiding rib (102), and the third flow guiding rib (103) increase in sequence, that is, H1 < H2 < H3; A plurality of flow guiding ribs (10) are evenly distributed circumferentially. An X - Y coordinate system is established passing through the center of the fan wheel. The Y - axis is parallel to the direction of the air outlet (8). The third flow guiding rib (103) is parallel to the Y - axis, and there is a spacing G between the third flow guiding rib and the Y - axis. A plurality of flow guiding ribs (10) are respectively tangent to the base of the motor; The blade (5) includes a straight section (51) and an inclined section (52). The outer end in the radial direction of the inclined section is connected to the straight section, and the inner end in the radial direction of the inclined section is connected to the outer periphery of the hub (4). A plurality of grooves (53) are provided on the inclined section, and the plurality of grooves are arranged in an array on the inclined section.

2. The heat dissipation module according to claim 1, characterized in that, The plurality of grooves (53) correspond to and are adjacent to the second air inlet (7), and the outer diameter of the inclined section (52) is equal to the outer diameter of the second air inlet, and the inner diameter of the inclined section is greater than the inner diameter of the second air inlet.

3. The heat dissipation module according to claim 2, wherein The groove (53) is a U - shaped groove or a semi - circular groove.

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