CN115066139B - Cooling modules and electronic equipment - Google Patents

Abstract

The application provides a heat radiation module and electronic equipment, comprising a volute, a fan and a diversion support body; the volute comprises a heat dissipation cavity and an air outlet, the heat dissipation cavity comprises a cavity side wall and a cavity bottom wall, the cavity side wall is arranged at the edge of the cavity bottom wall and is provided with an arc section, the fan is arranged in the heat dissipation cavity, and the flow guide support body is convexly arranged at the cavity bottom wall; the area where the fan is located is a fan area, a first air channel is arranged between the arc section and the fan area, and a second air channel is arranged between the air outlet and the first air channel; the second air duct comprises a first area and a second area, the first area and the second area are arranged along the width direction of the air outlet, the second area is connected with the first air duct, the air flow generated by the rotation of the fan is higher than the flow rate of the partial air flow passing through the first area; the flow guiding support body is positioned in the second area of the second air duct, the length extending direction of the flow guiding support body is intersected with the width direction of the air outlet, and the flow guiding support body is used for dividing the air flow in the second area and guiding the air flow into the first area.

Description

Cooling modules and electronic equipment

This application claims the priority of the Chinese patent application with the application number 202111470698.X and the application name "radiation module and electronic equipment" submitted to the China Patent Office on December 03, 2021.

technical field

The present application relates to the technical field related to heat dissipation, in particular to a heat dissipation module and electronic equipment.

Background technique

In the thermal system of electronic equipment such as notebook computers, the heat dissipation module composed of fans and fin radiators is the most important heat dissipation part. For example, in a notebook computer, the heat generated by the main heat source is conducted to the volute case and the heat sink, and then the airflow generated by the fan blows away the heat to achieve the purpose of reducing the temperature of the computer.

Existing fan heat dissipation modules are all composed of a fan and a heat dissipation fin set, the fan is used to provide the air volume required for heat dissipation, and the fin set is responsible for heat exchange. The higher the flow rate of the heat dissipation fins, the higher the heat transfer coefficient between the air and the heat dissipation fins, the more heat will be taken away per unit time, and the better the heat dissipation performance will be. Due to the open design of the conventional heat dissipation shell, there will be a high-speed zone and a low-velocity zone at the outlet of the heat dissipation shell. The thermal performance of the module is reduced.

Contents of the invention

The present application provides a heat dissipation module to solve the technical problem that the heat dissipation performance of the entire module is reduced due to the large difference in the outlet airflow velocity of the heat dissipation shell.

The present application also provides an electronic device.

The heat dissipation module described in the present application includes a volute, a fan, and a flow guide support; the volute includes an air outlet through which the heat dissipation cavity communicates with the heat dissipation cavity; the heat dissipation cavity includes a cavity side wall and a cavity bottom wall, The side wall of the cavity is arranged on the edge of the bottom wall of the cavity and has an arc section, the fan and the flow guide support are arranged in the heat dissipation cavity, and the flow guide support is protruded from the cavity bottom wall;

The area where the fan is located is the fan area, the first air duct is between the arc section and the fan area, and the second air duct is connected between the air outlet and the first air duct; The second air passage includes a first area and a second area, the first area and the second area are arranged along the width direction of the air outlet, the first area and the second area are connected with the first air passage connect,

The air guiding support is located in the second air duct, the starting end of the air guiding supporting body is located in the second area, the length extending direction of the air guiding supporting body intersects the width direction of the air outlet, The air guiding support is used to divide the airflow in the second area, and guide part of the airflow divided to the first area.

The volute of the heat dissipation module in this embodiment is provided with a thermally conductive support body, which can improve the velocity distribution of the airflow at the air outlet of the volute, make the flow velocity of the airflow discharged from the air outlet uniform, and improve the heat dissipation efficiency of the heat dissipation fin group. For example, in the airflow generated by the rotation of the fan, the flow velocity of the partial airflow passing through the second area is greater than the flow velocity of the partial airflow passing through the first area, and the airflow can be divided by the flow guiding support, thereby increasing the airflow velocity in the first area, Uniform air outlet flow rate.

In one embodiment, the heat dissipation cavity includes a cavity top wall, the cavity top wall is connected to the cavity side wall and is opposite to the cavity bottom wall; the flow guiding support is supported on the cavity top wall and the cavity bottom wall. between the cavity bottom walls. In this example, the diversion support is used to replace the ordinary cylindrical support between the cover plate and the plate body, so as to prevent the fan from being damaged when the volute is subjected to external pressure, and can ensure the rigidity of the volute.

In one embodiment, the flow guide support body is a plate body, and the cross-sectional shape of the plate body is an airfoil shape, a rectangle or an arc shape. Specifically, the airfoil-shaped plate body and the arc-shaped plate body of the air-guiding support body can be more suitable for the arc-shaped airflow generated by the rotation of the fan, and it is more convenient to control the flow direction of the diverted airflow.

In one embodiment, the fan area has a first preset angle θ1 and a second preset angle θ2, and a straight line passing through the radius of the fan area and the minimum position of the first air duct width is the reference line,

The two sides constituting the first preset angle θ1 are the reference line and the first coordinate line R1 respectively, the length of the first coordinate line R1 satisfies R1=K1*D/2, and D is the diameter of the fan area , the end of the first coordinate line R1 away from the center of the circle is the starting end of the flow guiding support;

The two sidelines constituting the second preset angle θ1 are respectively the reference line and the second coordinate line R2, the length of the second coordinate line R2 satisfies R2=K2*D/2, and D is the radius of the fan area , K2 is greater than K1, and the end of the second coordinate line R2 away from the center of the circle is the end of the flow guiding support. The confirmation of the starting end and the end of the flow guiding support in this embodiment can better achieve the purpose of splitting the flow and ensure the flow of the airflow entering the first area.

In one embodiment, the angle values of the first preset angle θ1 and the second preset angle θ2 are greater than 180 degrees and less than 360 degrees, and the angle of the first preset angle θ1 is smaller than the second preset angle θ1. Let the angle θ2 be the angle.

In one embodiment, both K1 and K2 are greater than 1 and less than 10.

In one embodiment, the first area is provided with flow guide supports, and the flow guide supports in the first area are arranged at intervals from the flow guide supports in the second area, and in the first area The length extension direction of the air guiding support intersects with the width direction of the air outlet, and the air guiding supporting body is used to divide the airflow in the first region. The air guide support in the first area can further divide the airflow in the first area, so that the airflow can evenly pass through the air outlet, so as to realize the uniform heat dissipation of the heat dissipation fins.

In one embodiment, the volute further includes a baffle, the baffle protrudes from the bottom wall of the cavity and is located in the first air channel, and the baffle is along the length direction of the first air channel extending, and the profiled line of the partition is spaced from and opposite to the profiled line of the arc segment. Along the direction of fan rotation, the baffle divides the first air duct into two sub-channels, diverting the accumulated air volume in the first air duct during the fan rotation, and avoiding the continuous accumulation of air flow in the first air duct to generate flow velocity If it is too large, the problem of uneven heat dissipation can improve the uniformity of the flow velocity of the airflow in the first air duct, avoid increasing the flow velocity in a local area when entering the second air duct, and make the flow velocity of the air outlet more uniform.

In one embodiment, the profile of the partition is a circular arc, or a plurality of arcs with different curvatures connected in sequence, or a Bezier curve, or an unclosed spline curve. It is equivalent to having partitions that are partly the same as or similar to the profile of the side wall in the volute, ensuring smooth air flow and improving uniformity.

In one embodiment, the arc segment includes a first arc segment and a second arc segment, and the profile of the separator has the same curvature as the profile of the second arc segment. In this embodiment, the profile of the baffle is the same as that of the arc section, so that the baffle, the fan area and the second air duct of the volute form a double volute structure, improving the uniformity of the air outlet. In one embodiment, the width of the first air channel gradually increases along the rotation direction of the fan, and the first arc segment and the second arc segment are arranged along the rotation direction of the fan. The direction in which the width of the first air duct becomes larger is also the flow direction of the airflow, which avoids excessive flow velocity and uneven heat dissipation caused by the large amount of air accumulated during the rotation of the fan, and can increase the flow velocity of the airflow in the first air duct. Uniformity, thereby improving the uniformity of the flow velocity at the air outlet.

Further, the width of the sub-air duct between the profile of the baffle and the fan area is the same as the width between the second arc segment and the fan area. When designing the partition, you can directly select the profile of the second arc section, and you can also improve the smoothness of the air flow in the air duct.

In one embodiment, the fan area has a third preset angle θ3 and a fourth preset angle θ4, the angle of θ4 is K5*θ3, and K5 is greater than 1 and less than 5; the radius of the fan area and the fourth preset angle The straight line at the minimum position of the air duct width is the reference line,

The two sidelines forming the third preset angle θ3 are respectively the reference line and the third dividing line, and the two sidelines forming the fourth preset angle θ4 are respectively the reference line and the fourth dividing line,

The starting end of the partition is located on the line between the third boundary line and the fan area and the side wall of the chamber, and the end of the partition is located on the line between the fourth boundary line and the fan area. and the line between the side walls of the cavity. The air flow in the first air duct is continuously accumulated and the flow velocity is too high, and by properly setting the positions of the partitions to divert the flow, a uniform flow velocity can be achieved, thereby realizing the purpose of uniform heat dissipation.

In one embodiment, the third coordinate line R3 is determined on the third boundary line, the length of the first coordinate line R3 satisfies R3=K1*D/2, D is the diameter of the fan area, and the first The end of the coordinate line R3 away from the center of the circle is the starting end of the partition;

Determine the fourth coordinate line R4 on the third boundary line, the length of the fourth coordinate line R4 satisfies R4=K4**R3, K4 is greater than K1, and the fourth coordinate line R4 is far away from the end of the center of the circle is the end of the separator.

In one embodiment, the third preset angle θ3 is greater than 30 degrees and less than 180 degrees; K3 is greater than 1 and less than 2, and K4 is greater than 1 and less than 2.

In one embodiment, the arc section and the fan area are two walls of the air channel, the first air channel has a preset width, and the first air channel and the second air channel There is a port between the ducts, and the straight line where the port is located passes through the radius of the fan area; the starting end of the partition is located at the position where the width of the air duct is equal to the preset width, and the end of the partition is located at the The location of the above port. The position of the start end and the end of the separator in the width direction of the first air channel is not limited, which is convenient for processing, and only needs to achieve flow splitting.

In one embodiment, the side wall of the chamber includes two opposite first and second plate segments connected by the arc segment, and the first and second plate segments are respectively located at the outlet On the opposite sides in the width direction of the tuyere,

The arc section includes a connected first arc plate and a second arc plate, and the shape line in the length direction of the first arc section is an arc line or a plurality of arc connections with different curvatures; The shape line in the length direction of the second arc segment is a circular arc line, or a plurality of arc connections with different curvatures. The arc design of the arc segment of the volute facilitates the consistency of the air outlet direction at each position when the fan rotates.

In one embodiment, the heat dissipation module further includes a heat conduction element, and the heat conduction element is connected to the outer surface of the volute. The heat conduction element is used for transferring external heat to the volute for heat dissipation.

In one embodiment, the heat dissipation module further includes a heat dissipation fin set, and the heat dissipation fin set is arranged outside the volute and connected to the air outlet. The cooling fin group is used to dissipate the heat discharged from the volute.

The electronic equipment provided by the present application includes a main body and the heat dissipation module, the heat dissipation module is assembled in the main body, and the heat dissipation fin group is exposed from the main body. The application adopts the heat dissipation module, which can realize uniform heat dissipation.

To sum up, the heat dissipation module of the present application is provided with a guide support body in the heat dissipation shell to support between the cover plate and the plate body, so as to prevent the fan from being damaged when the volute is subjected to external pressure, and can ensure the rigidity of the volute; The speed distribution of the airflow at the position of the air outlet of the volute can be improved, the flow velocity of the airflow discharged from the air outlet can be made uniform, the heat dissipation efficiency of the heat dissipation fin group can be improved, and the heat dissipation efficiency of the electronic equipment can be further improved.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiment of the present application or the background art, the following will describe the drawings that need to be used in the embodiment of the present application or the background art.

FIG. 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application;

FIG. 2 is a schematic structural diagram of the heat dissipation module shown in FIG. 1;

Fig. 3 is a schematic structural view of the cooling module shown in Fig. 2 after the cover plate is removed;

Fig. 4 is a schematic top view of the cooling module shown in Fig. 3;

Figure 5 and Figure 6 are schematic diagrams of the process of forming the position of the flow guiding support body shown in Figure 3;

Fig. 7 is a schematic diagram of the heat dissipation module shown in Fig. 3 having a plurality of guide supports;

Fig. 8 is a velocity distribution diagram of the air outlet of the heat dissipation module of the present application provided with a guide support body;

FIG. 9 and FIG. 10 are schematic diagrams of the process of forming the positions of the partitions shown in FIG. 3 .

Detailed ways

Please refer to FIG. 1 . FIG. 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application. The electronic device may be an electronic device that requires internal heat dissipation, such as a desktop computer or a notebook computer. In the embodiment of the present application, the notebook computer 200 is taken as an example for description.

The notebook computer 200 includes a main body 210 , a display screen rotatably mounted on the main body 210 and a cooling module 100 inside the main body 210 . The main body 210 includes a housing and electronic components such as a processor and a circuit board installed inside the housing, as well as related structural components for realizing computer functions, and the processor and the circuit board are components with high heat generation. The casing is provided with a heat dissipation air vent for communicating with the outside world, and the heat in the notebook computer 200 is dissipated through the heat dissipation air vent through the heat dissipation module.

The heat dissipation module described in this application will be described in detail below in conjunction with specific embodiments.

Please refer to Fig. 2 and Fig. 3 together, Fig. 2 is the structure schematic diagram of the cooling module shown in Fig. Schematic diagram of the structure of the group after removing the cover plate; the heat dissipation module 100 includes a volute 10 , a fan 20 installed in the volute 10 , a flow guide support 30 and a cooling fin set 70 in the volute 10 . The volute 10 includes a plate body 14 , a side wall 15 and a cover plate 16 . The volute 10 includes a cooling cavity 11 and an air outlet 12 communicating with the cooling cavity 11 . Specifically, the fan 20 and the flow guiding support 30 are located in the heat dissipation cavity 11 , and the flow guiding support 30 is protruded from the wall of the heat dissipation cavity, and the flow guiding support 30 is used to support between the side wall 15 and the cover plate 16 . The air outlet 12 is located on one side of the volute 10 for the hot air in the cooling cavity 11 to flow out. The cooling fin group 70 is located at the position of the air outlet 12 and is used for cooling and dissipating the hot air coming out of the cooling chamber 11 . In this application, the guide support body 30 prevents the fan 20 from being damaged when the volute 10 is subjected to external pressure, and can ensure the rigidity of the volute; it can also improve the velocity distribution of the airflow at the air outlet 12 of the volute 10, and improve the heat dissipation of the cooling fin group. efficiency.

In this embodiment, the side wall 15 of the volute protrudes from the plate body 14 to form a body, and the cover plate 16 covers the side wall and faces the plate body 14 at intervals. The body and the cover plate 16 form a cooling chamber 11 and an air outlet 12 . The side wall of the side wall 15 facing the cooling cavity 11 is the cavity side wall of the cooling cavity 11, the surface of the plate body 14 facing the cooling cavity 11 is the bottom wall of the cavity; The flow support body 30 is protruded on the bottom wall of the cavity and supported between the top wall and the bottom wall of the cavity. The volute 10 of this embodiment has a volute shape as a whole, and has a heat dissipation chamber 11 with a volute outline and a side wall 15 extending along a volute shape.

The heat dissipation chamber 11 of the volute 10 includes a fan installation area, the plate body 14 is provided with a fan air inlet (not shown in the figure), and the cover plate 16 covering the body is provided with a fan air inlet corresponding to the fan air inlet (not shown in the figure) ; The fan air inlet and the fan air inlet of the plate body 14 correspond to the fan installation area. When the fan is displaced in the fan installation area, when the fan 20 rotates, the external airflow enters the inside of the volute 10 through the fan air inlet of the plate body 14 and the fan air inlet. The fan 20 of this embodiment includes a fan shaft 21 and a plurality of fan blades 22, the plurality of fan blades 22 are spaced and evenly arranged around the fan shaft 21, and the gap between every two adjacent fan blades 22 is a flow channel (not shown in the figure) mark), a plurality of fan blades 22 are evenly spaced to ensure that the flow channel spacing between every two adjacent fan blades 22 is the same. Wherein, one end of each fan blade 22 is connected to the fan shaft, and the other end is a free end, and between the free ends of every two adjacent fan blades is an outlet of the flow channel for the air flow in the flow channel to flow out.

When the plurality of fan blades 22 rotate around the fan shaft 21 , the ends away from the fan shaft 21 form a circular ring profile. A plurality of fan blades 22 are evenly arranged around the fan shaft 21 to ensure that when the fan blades rotate, the air output of the flow channel between every two fan blades is the same, that is to say, when the fan 20 rotates, it blows out the fan through each flow channel. The air volume outside is the same and uniform. The fan 20 is installed in the heat dissipation cavity 11, and is connected to the plate body 14 through the fan shaft 21. The axis of the fan shaft 21 of the fan 20 is perpendicular to the plate body 14, and the fan blades 22 are arranged at intervals from the side wall 15, that is, the fan blades 22 and the side wall 15 The distance between them should ensure the passage of airflow and the safe distance between the fan and the heat dissipation module when it rotates.

Please also refer to FIG. 4 . FIG. 4 is a schematic top view of the cooling module shown in FIG. 3 . Specifically, the plate body 14 includes an inner surface 141 (cavity bottom wall) and an end edge 142 ; the end edge 142 is an edge of the plate body 14 extending in a straight line, and can also be understood as a side edge of the inner surface 141 . The length direction of the end edge 142 is the width direction of the heat dissipation module 100 and also the width direction of the air outlet. The sidewall 15 includes a first end 151 and a second end 152 . The side wall 15 protrudes from the inner surface 141 and extends along a part of the edge of the inner surface 141. The first end 151 of the side wall 15 is located at one end of the end edge 142, and the second end 152 is located at the other end of the end edge 142; An opening is formed between the first end 151 and the second end 152 , and the end edge 142 is located at the opening. It can be understood that the side wall 15 is a strip-shaped thin plate, the side of which is connected to the inner surface, and extends from one end of the end edge 142 to the other end of the end edge 142 along the edge of the inner surface. The profile of the cover plate 16 is the same as that of the plate body 14, the cover plate 16 is covered on the side wall 15, the heat dissipation cavity 11 is formed between the cover plate 16, the side wall 15 and the plate body 14, and at the opening position The air outlet 12 is formed. It can also be understood that the side wall 15 is arranged around the edge of the inner surface of the plate body 14 , and the ventilation opening is opened on the side wall 15 . The end side 142 is a side surrounding the air outlet 12 . The length square of the end edge 142 is the width direction of the air outlet 12 .

For ease of description, define the width direction of the volute 10 (the direction parallel to the end edge 142, that is, the width direction of the air outlet 12) as the X-axis direction, and the length direction of the volute 10 (the direction perpendicular to the end edge 142, also That is, the direction perpendicular to the plane where the air outlet is located) is the Y-axis direction, the thickness direction of the volute 10 is the Z-axis direction; the X-axis direction, the Y-axis direction and the Z-axis direction are perpendicular to each other. It should be noted that the parallel described below in this application is allowed to have a certain tolerance range, and the values such as the diameter value, radius value, and spacing value described below in this application are all allowed to have a certain tolerance range.

The heat dissipation module 100 is also provided with a heat conduction element (not shown in the figure), and the heat conduction element is installed on the outside of the volute 10, specifically on the outer surface of the plate body 14 opposite to the inner surface 141, for use with the notebook computer. contact with the heating element to transfer the heat in the notebook computer 200 to the volute 10, the volute 10 and the flow guide support in the volute 10 receive the heat transferred by the heat conduction element, and the airflow generated by the fan 20 The belt takes away the heat to dissipate heat, so as to achieve the purpose of cooling the computer. Specifically, the heat conducting member may be a metal plate body or a metal pipe body, and is directly connected to electronic components such as a processor and a circuit board of a notebook computer that generate a large amount of heat. In other embodiments, the heat conducting element is disposed along the outer peripheral surface of the side wall 15 , that is, the side wall 15 faces away from the outer surface of the heat dissipation cavity 11 .

Please also refer to FIG. 4. FIG. 4 is a schematic top view of the cooling module shown in FIG. 3; Shape segment 154, the second arc segment 155, the arc connecting segment 159 and the second flat segment 156, the first flat segment 153, the first arc segment 154, the second arc segment 155, the arc connecting segment 159 and the second segment The two flat plate segments 156 are connected in sequence to form the shape of the volute 10 , and the profile of the side wall 15 can be understood as the profile of the volute 10 . The first arc segment 154 , the second arc segment 155 and the arc connection segment 159 are arc-shaped plates, and the first flat plate segment 153 and the second flat plate segment 156 are rectangular plate bodies. Along the width direction of the volute 10, the first flat section 153 is opposite to the second arc section 155 and the second flat section 156 connected by the arc connecting section 159, the first flat section 153 and the second flat section 156 Located on opposite sides of the air outlet 12. Along the length direction of the volute 10 , the first arc segment 154 is opposite to the air outlet 12 . In other embodiments, the sidewalls 15 may also all be flat or arc-shaped, which is determined according to practical applications.

In this embodiment, the side wall 15 is perpendicular to the inner surface 141, that is, the first flat section 153, the first arc section 154, the second arc section 155, the arc connecting section 159 and the second flat section 156 are all vertical on the inner surface 141 . The first flat section 153 , the first arc section 154 , the second arc section 155 , the arc connecting section 159 and the second flat section 156 are thin plates with uniform thickness and dimension. Wherein, the first arc segment 154 and the second arc segment 155 are connected to form an arc segment. The thickness dimensions of the first flat section 153 , the first arc section 154 , the second arc section 155 , the arc connecting section 159 and the second flat section 156 refer to the dimensions along the X-axis direction. It can be understood that the thicknesses of the first flat section 153, the first arc section 154, the second arc section 155, the arc connection section 159 and the second flat section 156 are consistent or different from each other, but the thickness of each section is average. Wherein, the first flat section 153, the first arc section 154, the second arc section 155, the arc connecting section 159 and the second flat section 156 can directly form the side wall through in-mold integral molding, or can be the first A flat plate segment 153 , a first arc segment 154 , a second arc segment 155 , an arc connecting segment 159 and a second flat segment 156 are respectively formed and then connected. In other embodiments, the side wall 15 may also be a board with uneven thickness.

The thickness of the side wall 15 in this embodiment is uniformly set. For the convenience of description, the volute 10 and the fan 20 are shown in the form of lines in the top view of FIG. , that is, the profiles of the first flat segment 153 , the first arc segment 154 , the second arc segment 155 , the arc connecting segment 159 and the second flat segment 156 . Of course, the lines of the side wall 15 shown in the figure can be the connection of the respective profile lines of the first flat section 153, the first arc section 154, the second arc section 155, the arc connecting section 159 and the second flat section 156. Wire. In the case that the thickness of the sidewall 15 is inconsistent, the profile line is the side contour line of the sidewall surface of the sidewall 15 facing the heat dissipation cavity 11 . It should be noted that the first arc segment 154 and the second arc segment 155 form the arc segment.

For the description of the above-mentioned molded line, taking the first flat plate section 153 as an example, the molded line of the first flat plate section 153 is a line extending through the center of the first flat section 153 along its length direction (also forming the first flat section 153). The center line of the overall outline of the flat plate section 153), the width and thickness of the first flat plate section 153 are all symmetrical lines with the molding line; The contour line is parallel to the mold line and has the same bending direction and curvature. The first plate section 153 actually has two sides extending in the lengthwise direction. One side faces the heat dissipation cavity, and the other side faces the outside of the volute. The two sides are arc-shaped surfaces. The contours of the flow guiding support body, the first arc segment 154 , the second arc segment 155 , the arc connecting segment 159 and the second flat segment 156 are exactly the same as those of the first flat segment 153 . The shape of the molded line described later may represent the shape of the flow guide support or the side wall corresponding to the molded line.

Both the first arc section 154 and the second arc section 155 are arc-shaped plates, and the first arc section 154 and the second arc section 155 are smoothly connected. The profile lines of the first arc segment 154 and the second arc segment 155 in the length direction are a circular arc, or the profile lines of the first arc segment 154 and the second arc segment 155 are connected by multiple arcs with different curvatures . In this embodiment, the profile lines in the length direction of the first arc segment 154 and the second arc segment 155 are Bezier curves. Of course, the contour lines in the length direction of the first arc segment 154 and the second arc segment 155 can also be formed by sequentially connecting multiple arcs, and the arc bending direction of the first arc segment 154 and the second arc segment 155 faces fan. In this embodiment, the centers of one or more arcs constituting the profiles of the first arc segment 154 and the second arc segment 155 are located in the fan area 20A.

The first flat section 153 is a rectangular plate, which is smoothly connected with the end of the first arc section 154 away from the second arc section 155 , and the end of the first flat section 153 away from the first arc section 154 is the first end 151 . The second flat section 156 is a rectangular plate connected to an end of the second arc section 155 away from the first arc section 154 , and the end of the second flat section 156 located at the air outlet 12 is the second end 152 . In this embodiment, the second flat section 156 and the second arc section 155 are connected through the arc connecting section 159, and the second flat section 156 is connected with the second arc section 155 through the arc connecting section 159 to realize a smooth transition, ensuring that the entire side The profile of the wall 15 is relatively smooth, thereby making the air flow in the cooling chamber 11 flow smoothly.

The arc bending direction of the arc connecting section 159 faces away from the fan area, and the profile of the arc connecting section 159 may be an arc with only one curvature. It can be understood that the arc connecting section 159 is formed by chamfering the connection between the second flat section 156 and the second arc section 155 . It can also be understood as an extension of the arc connecting segment 159 to the second flat segment 156 . In other embodiments, the second flat section 156 is directly connected to the second arc section 155 at an included angle.

Please also refer to FIG. 4 , the area where the fan 20 is located is named as the fan area 20A. It can be understood that the outline and volume of the fan area are exactly the same as the outline and volume of the fan 20, that is, the fan area 20A is equivalent to the stereoscopic projection of the fan 20, which is similar to the fan 20. completely coincident. The outer contour of the fan area 20A is also embodied in the form of lines, specifically a circle. When the fan blade 22 rotates, the end of the fan blade 22 away from the center O forms an annular surface with the fan 20 as the center O, and the annular surface is the outer contour surface of the fan area 20A. The distance from the fan area 20A to the side wall or the partition 40 described below refers to the distance from the outer contour surface of the fan area 20A to the side wall 15 or the partition 40 .

The plane where the two radii of the fan area 20A are connected at an included angle is the interface F. The interface F passes through the center O of the fan area 20A. The interface F is actually a virtual surface, which is presented in the form of a line in the figure. The interface F divides the fan area 20A into a first fan area 201A (the part corresponding to the included angle A1 in FIG. 4 ) and a second fan area 201B (the part corresponding to the included angle A2 in FIG. 4 ). Along the length direction of the volute 10 , that is, the Y-axis direction, the second fan area 201B is close to the air outlet 12 ; the first fan area 201A is opposite to the first arc segment 154 and the second arc segment 155 at intervals. Along the width direction of the volute 10 , that is, the X-axis direction, the first plate segment 153 and the second plate segment 156 (including the arc-shaped connecting segment 159 ) are located on opposite sides of the second fan area 201B. Wherein, the centers of the first arc segment 154 and the second arc segment 155 are located on a diameter passing through the interface F and spaced apart from the center O. It should be noted that the included angle A1 is two connecting lines that pass through the center of the circle with the connection point of the first flat segment 153 and the first arc segment 154 as the starting point and the connection point of the second arc segment 155 and the arc segment 159 as the end point. The included angle; the sum of the included angle A2 and the included angle A1 is 360 degrees, that is, the interface F passes through the starting point and the ending point.

In this embodiment, there is a gap between the fan area 20A, the side wall 15 and the air outlet 12 located in the cooling cavity 11 , and the gap can be understood as an air duct. The air duct communicates with the air outlet 12 , and the overall outline of the air duct in this embodiment can be understood as a volute shape, which is actually arranged around the fan area 20A. The gap between the first fan area 201A and the first arc section 154 and the second arc section 155 is the first air duct 50 . The area between the second fan area 201B and the first flat section 153, the second flat section 156 (including the arc connecting section 159) and the air outlet 12 is the second air duct 60, and the second air duct 60 communicates with the air outlet 12 ; Along the width direction of the volute 10, it is the length direction of the second air passage 60, and the length direction of the volute 10 is the width direction of the second air passage 60.

In this embodiment, the two ports of the first air duct 50 are the first port 51 and the second port 52 respectively, and the first port 51 is located at the junction of the second arc section 155 and the arc connection section 159, that is, the interface F Pass through the fan area 20A to the position between the second arc segment 155 and the arc connection segment 159 . The second port 52 is located at the junction of the first flat section 153 and the first arc section 154 ; that is, the interface F passes through the fan area 20A to the junction of the first flat section 153 and the first arc section 154 . The first air passage 50 communicates with the second air passage 60 through the first port 51 and the second port 52 . Along the width direction of the fan 20 is the length direction of the second air passage 60 , and the length direction of the fan 20 is the width direction of the second air passage 60 . It can be understood that the first air duct 50 is between the arc segment and the fan area 20A, and the second air duct 60 is connected between the air outlet 12 and the first air duct 50 .

In one embodiment, along the radial direction of the fan area 20A (diameter direction with the center O as the circle point), the width of the first port 51 is smaller than the width of the second port 52, and along the first port 51 to the second In the direction of the port 52 , that is, the length direction of the first air duct 50 (clockwise direction ω), the width of the first air duct 50 gradually increases. In this embodiment, the fan rotates clockwise as an example for illustration. After the fan 20 is started, the fan blades rotate clockwise, and the airflow generated at the first port 51 will flow along the first air duct 50 to the second port, and the first port between the first port 51 and the second port 52 In the air duct 50, because the fan blades 22 generate airflow at the same time, the flow of the airflow is constantly superimposed from the first port 51 to the second port 52. Along the length direction of the first air duct 50, the first air flow The width of the duct 50 gradually increases, which can control the uniformity of the flow velocity under the premise of the continuous increase of the flow rate during the flow of the air flow through the first air duct 50 .

Please also refer to FIG. 4 , the flow guiding support 30 is located in the second air duct 60 , and the second air duct 60 communicates with the air outlet 12 . Specifically, the second air duct 60 includes a first area 60A and a second area 60B, the first area 60A and the second area are arranged along the width direction of the air outlet, and the first area 60A and The second area 60B is connected to the first air duct 50 . The width direction of the air outlet 12 refers to the X-axis direction. In fact, a third area (not shown) is located on the other side of the first area 60A. The third area, the first area 60A and the second area The second area 60B is arranged and connected along the width direction of the air outlet 12, the third area corresponds to and communicates with the first port 51 of the first air duct 50, and the second area 60B corresponds to and communicates with the second port 52 of the first air duct 50. connected.

As shown in Fig. 4, wherein, the first area 60A and the second area 60B are divided by the interface F2, the profile line of the interface F2 is arc-shaped, and the profile line starting end of the interface F2 is located between the interface F and the fan area 20A. intersection point, and is located at the second port 52 position of the first air channel 50, the profile line of the interface F2 has an intersection point with the air outlet 12 (end edge 142), and this intersection point is the end of the profile line of the interface F2, wherein for the convenience of distinguishing , the profile line of the interface F2 shown in the figure has a part that extends the air outlet 12 .

Based on the above division, it is actually to form the first area 60A and the second area 60B with different flow velocities on both sides of the interface F2 in the second air passage 60; With the profile and position of 60 set, the airflow velocity in the first area 60A will be greater than the airflow velocity in the second area 60B. The third area is located on the other side of the first area 60A, and the air flow velocity is different from the first area 60A, and is greater than the flow velocity of the first area 60A. It can be understood that the two sides of the interface F2 form areas with different flow rates, excluding third area.

In other embodiments, the ratio of the first area 60A and the second area 60B can also be divided according to the measured actual air flow velocity of the second air duct 60 located on both sides of the intersection of the end edge 142 of the interface F2, the actual air flow velocity of the first area 60A greater than the actual airflow velocity in the second zone 60B.

The profile shape of the interface F2 is determined according to the air flow direction of the second port 52 of the first air duct 50 entering the second air duct and the air flow direction (arc) generated by the fan blades of the fan 20 in the second area near the second port. The setting is mainly to adapt to the flow direction of the superimposed air volume of the first air duct 50 and the second air duct 60 .

Of course, the profile of the interface F2 can also be a straight line. The starting end of the interface F2 whose profile is a straight line is located at the intersection of the interface F and the fan area 20A, and is located at the second port 52 of the first air duct 50. The interface The profile line of F2 has an intersection point with the air outlet 12 (end side 142 ), and the intersection point is the end of the profile line of the interface F2. The first region 60A and the second region 60B located on both sides of the interface F2 where the profile is a straight line have different airflow velocities. The interface F2 is only a schematic boundary. Similarly, the boundary line between the third area and the first area 60A is also divided in the same way. Generally, the airflow velocity in the third area is higher than that in the first area 60A and flows directly out of the air outlet.

The air guiding support is located in the second air duct, the starting end of the air guiding supporting body is located in the second area 60B, and the length extension direction of the air guiding supporting body 30 is in line with the air outlet 12 (X axis direction), the air guide support 30 is used to divide the airflow in the second area 60B, and guide part of the airflow in the second area 60B to the first area 60A.

The air flow in the second area 60B includes the air flow generated by the fan 20 itself and the second port 52 of the first air duct 50 flowing into the second area, and the first air duct 50 can pass through the second port through the flow guiding support 30 52 and the air volume generated by the fan at the position of the second air duct 60 are divided to balance the flow velocity of the air flow in the width direction of the air outlet 12, avoiding the width direction of the air outlet 12, which is located in the roughly middle of the second air duct 60 The area (the first area 60A) is a lower wind speed area, which can avoid the lower flow velocity in this area and avoid the heat dissipation efficiency of the heat dissipation fins corresponding to this area, that is, improve the heat dissipation effect of the heat dissipation fins corresponding to this area.

In this embodiment, the flow guide support 30 is an airfoil plate, wherein the cross-sectional shape of the flow guide support 30 is an airfoil shape, such as a low-speed airfoil: NACA-4, NACA-6 series airfoil, etc. In other embodiments, the flow guiding support body 30 may also be an arc-shaped plate or a flat plate, and the cross-sectional shape of the corresponding plate body is rectangular or arc-shaped. The flow guiding support body 30 can be made of plastic material, so as to avoid excessively increasing the weight of the cooling module. Of course, the conduction support body 30 can also be made of metal materials such as aluminum, so as to realize the functions of conduction and support and assist the heat conduction function at the same time.

The air guide support 30 includes a first air guide surface 301 and a second air guide surface 302, the first air guide surface 301 and the second air guide surface 302 are arranged opposite to each other, the first air guide surface 301 faces the fan 20, and the second air guide surface The flow surface 302 faces the first plate segment 153 . The first flow guide surface 301 and the second flow guide surface 302 realize the airflow guiding function. The flow guide support 30 further includes a starting end 31 and an end 32 , both of which are connected to the first flow guiding surface 301 and the second flow guiding surface 302 . In this embodiment, the flow guide support 30 is roughly located in the second area 60B close to the first area 60A; the start end 31 and the end 32 of the flow guide support 30 are both located in the second area 60B. In this embodiment, the air guide support body 30 is an airfoil plate, and the first air guide surface 301 and the second air guide surface 302 are arc-shaped surfaces, which are more suitable for the flow direction of the airflow generated by the rotation of the fan 20, so that the airflow can flow smoothly.

In other embodiments, the starting end 31 of the flow guide support body 30 is located in the second region 60B, and the end 32 is located in the first region 60A. Just start to be shunted, and enter the first region 60A along the length extension direction of the air guiding support 30, so that the direction of the airflow entering the first area 60A can be adjusted, and more targeted air guiding and heat dissipation can be achieved.

In this embodiment, the length extension direction of the flow guide support 30 intersects the width direction of the air outlet 12 (X-axis direction), that is, the flow guide support 30 is inclined compared with the air outlet 12 (end edge 142 ), The inclined flow channel is generated, which can easily divide the air volume of the second area 60B to the first area 60A of the second air channel. It should be noted that the extending direction of the length of the flow guiding support body is the extending direction of a straight line as shown by 303 in the figure, and the straight line passes through the flow guiding support body 30 to connect the starting end 31 and the end 32 .

Please refer to FIG. 5 and FIG. 6 together. FIG. 5 and FIG. 6 are schematic diagrams of the process of setting the position of the flow guide support shown in FIG. 3; 31 and the end 32 position, wherein the end 32 is close to the position of the air outlet 12, the length extension direction of the flow guiding support 30 intersects the width direction of the air outlet 12, that is, the flow guiding support 30 is inclined to the air outlet 12 The angle is an inclined angle with the end edge 142 ; the inclination angle of the air guiding support body 30 is greater than or equal to 90 degrees compared with the air outlet 12 (the end edge 142 ).

The fan area has a first preset angle θ1 and a second preset angle θ2, wherein the air volume of the first air duct 50 passing through the second port 52 is the same as that of the fan 20 in the second area 60B of the second air duct 60 The superposition of the generated air volume will increase the air volume and flow velocity at the positions on both sides of the second air duct 60. According to the same speed per unit area, the fan rotates after the airflow generated by the second air duct, the second area 60B and the first area The value of the first preset angle θ1 and the second preset angle θ2 is determined by the ratio of the flow rate of 60A.

In the first air duct 50 and the second air duct 60, it is located at the connection position between the second flat section 156 (arc connecting section 159) and the second arc section, that is, the position of the first port 51 is that the width of the first air duct 50 is the smallest The position is also the position where the distance between the side wall 15 and the fan area 20A is the smallest, defining the connection position (the first port 51) passing through the radius and the second flat plate segment 156 (arc connecting segment 159) and the second arc segment 155 The straight line is the reference line F1, the reference line is located on the boundary surface F, and then the center O of the fan area 20A is taken as the starting point, and the straight line passing through the radius is used as the first boundary line r1, and the clip between the first boundary line r1 and the reference line F1 The angle is a first preset angle θ1, and the value of the first preset angle θ1 is 180 degrees to 360 degrees. In this embodiment, the value of the first preset angle θ1 is selected as 210 degrees. It can be understood that the position of the first dividing line r1 is actually determined according to the first preset angle θ1.

The first dividing line r1 has an intersection 1 with the fan area 20A, the first dividing line r1 has an intersection 2 with the first flat plate segment 153 , and the starting end 31 of the shape line of the flow guiding support body 30 is located between the intersection 1 and the intersection 2 . The connection line between the starting end 31 of the profile line of the diversion support body 30 and the center O is the first coordinate line R1, and the end of R1 located on the first dividing line r1, that is, the end between intersection point 1 and intersection point 2 is At the starting end 31 , the length of R1 satisfies R1=K1*D/2, and K1 is greater than 1 and less than 10. In this embodiment, the value of K1 is 2, and D is the diameter of the fan area. It can be understood that, in fact, the specific position of the starting end 31 can be determined according to the ratio of the required starting end 31 to the passing air volume between the fan area 20A and the side wall. After the intersection point 1 and intersection point 2 are confirmed, there is no need to do R1, directly according to The starting end 31 for determining the ratio is located on the line connecting the intersection point 1 and the intersection point 2 .

The end 32 of the molded line of the flow guiding support 30 is defined according to the second preset angle θ2 and the second coordinate line R2, specifically, the center O of the fan area 20A is taken as the starting point, and the straight line passing through the radius is used as the second dividing line r2 The angle between the second boundary line r2 and the reference line F1 is a second preset angle θ2, θ2 is greater than θ1, and the value of the second preset angle θ2 is 180 degrees to 360 degrees. In this embodiment, the value of the second preset angle θ2 is selected as 270 degrees.

The fan area 20A of the second dividing line r2 has an intersection point 3, the second dividing line r2 has an intersection point 4 with the first plate section 153 or the position of the air outlet, and the end 32 of the shape line of the flow guide support body 30 is located between the intersection point 3 and the intersection point 4 . The connecting line between the end 32 of the shape line of the diversion support body 30 and the center O is the second coordinate line R2, and R2 is located at the end of the second dividing line r2, that is, the end between the intersection point 3 and the intersection point 4 is the end 32 , the length of R2 satisfies R2=K2*D/2, K2 is greater than 1 and less than 10, and R2. Greater than R1. K2 is 4 in this embodiment.

After confirming the starting end 31 and the end 32 of the molded line of the flow guiding support body 30 , make an airfoil between the two. One section of the flow guide support 30 faces the first air duct 50, and the other end faces the air outlet 12. The air volume flowing from the second port 52 enters the second air duct 60 and is superimposed with the air volume produced by the second air duct 60. The air guide support Body 30 divides this part of the air volume, as indicated by the arrows in the figure.

Please also refer to FIG. 8 . FIG. 8 is a velocity distribution diagram of the air outlet of the heat dissipation module of the present application provided with the air guide support body 30 . The darker curve in the figure is the wind speed distribution without the flow guide support 30 of the present application, the light colored curve is the distribution of the wind speed at the air outlet after the flow guide support 30 is set, and the two lines reflect the flow guide support The position of the body 30 is different, and the wind speed distribution is different. Usually there will be a high-speed zone and a low-speed zone (the first zone 60A of the second air passage 60) at the air outlet 12 of the volute 10, and the difference is very large. It can be seen that at the air outlet 12 of the volute 10, the middle part (the first zone 60A) There is a relatively large low-velocity zone in the first area 60A) of the second air duct 60 . This low flow rate reduces the heat transfer efficiency of the fins. As shown in Figure 8, the air guide support body 30 guides part of the air volume into the first area 60A of the second air duct 60. It can be seen that the air guide support body 30 using the airfoil shape can well improve the temperature of the air outlet 12 of the volute 10. The speed of the first area 60A (low speed area) of the second air duct 60 can further improve the heat dissipation efficiency of the fins and enhance the heat dissipation effect of the entire heat dissipation module.

It can be understood that the first air duct 50 and the second air duct 60 jointly surround the outer periphery of the fan area 20A, and when the fan 20 rotates, the air volume is continuously accumulated along the rotation direction (clockwise), and the first preset angle θ1 and the second preset angle θ2 is the preset angle, according to the flow distribution division of the airflow in the second air duct 60 to the air outlet, the flow velocity in the low-velocity area of the air outlet 12 can be increased. In other words, the airflow of the second air duct 60 at the position of the first dividing line r1 starts to be divided at the starting end 31 of the air guiding support 30, the distance from the starting end 31 of the first coordinate line R1 to the fan area 20A and the first coordinate The distance from the starting end 31 of the line R1 to the first plate section 153 can be determined according to the air volume required in the middle area of the second air duct 60 (the first area 60A of the second air duct 60), for example, the distance between the starting end 31 and the intersection point The distance of 1 is smaller than the distance from the starting end 31 to the intersection point 2, and the flow channel with a smaller distance will have less flow distributed by the diversion support body 30, that is, the specific position of the starting end 31 can be determined according to the position of the first dividing line r1 The airflow is divided into two parts to design the air volume of the flow channel.

Please refer to FIG. 7. FIG. 7 is a schematic diagram of the heat dissipation module shown in FIG. 3 having multiple flow guide supports; in one embodiment, there are two flow guide supports 30, which are respectively the first flow guide support 30a The length and shape of the second flow guiding support body 30b' may be the same or different. The first flow guide support body 30a and the second flow guide support body 30b are arranged at intervals. The length of the first flow guide support body 30a in this embodiment is greater than the length of the second flow guide support body 30b, and the second flow guide support body 30b is located at the second flow guide support body. In the first area 60A of the second air duct 60, the inclination directions of the first flow guide support body 30a and the second flow guide support body 30b are the same or similar, and the flow guide support body in the first area can guide the first flow guide support body The airflow in the area is further divided, so that the airflow can evenly pass through the air outlet, and the flow velocity distribution out of the air outlet 12 is more uniform, so as to realize uniform heat dissipation of the heat dissipation fins. Both the start end and the end of the second flow guide support body 30b can be determined according to the way of determining the start end and the end end of the flow guide support body 30 in the above-mentioned embodiment.

Please refer to FIG. 9 and FIG. 10 . FIG. 9 and FIG. 10 are schematic diagrams of the process of forming the positions of the partitions shown in FIG. 3 . The heat dissipation module of this embodiment further includes a partition 40 , which is located in the first air duct 50 and protrudes from the inner surface 141 ( FIG. 3 ) of the plate body 14 , that is, the bottom wall of the cavity. The partition 40 is an arc-shaped thin plate, and its length direction extends along the length direction of the first air duct 50; the partition 40 is arranged in parallel with some arc-shaped sections at intervals, and the curved direction of the profile of the partition 40 faces the fan 20, and the partition 40 The molded line of 40 is an arc line, or a plurality of arcs with different curvatures are sequentially connected, or a Bezier curve, or a smooth curve, or a non-closed spline curve. Inside the volute, there are partitions that are partly the same as or similar to the profile of the side wall to ensure smooth air flow and improve uniformity.

The partition 40 is less than or equal to the height of the side wall 15 (or the arc section). The profiled line of the arc section has part of the same or close curvature to the profiled line of the dividing plate 40. In this embodiment, the profiled line of the second arcuate segment 155 in the arced segment is the same as that of the dividing plate 40, and the length can be Equal or unequal, it means that the volute 10 has part of the partition 40 with the same or similar profile as the side wall 15, so that the partition 40 forms a double volute structure with the fan area 20A and the side wall, improving the uniformity of the air outlet. Moreover, when designing the partition, the profile line of the second arc section can be directly selected, and the smoothness of the air flow in the air duct can also be improved. Along the rotation direction of the fan, the partition plate 40 divides the first air passage 50 into two sub-channels, and divides the air volume accumulated in the first air passage 50 during the fan rotation, so as to prevent the air flow from continuously flowing in the first air passage. Accumulation results in excessive flow velocity, which leads to uneven heat dissipation in the first flow channel, and improves the uniformity of the flow velocity of the air flow in the first air channel. Moreover, the flow velocity of the air flow entering the second area 60B of the second air channel 60 from the first air channel can be adjusted to avoid excessive flow rate of this part of the air flow, and then the flow rate to the first area 60A in the second air channel 60 can be adjusted. The sub-air duct between the profile of the partition 40 and the fan area 20A has the same width as the part of the first air duct 50 between the second arc section 155 and the fan area 20A, in fact The second arc segment 155 is rotated clockwise along the circle to the partition position, and the partition is formed with reference to the second arc segment 155 profile.

After determining the starting end 401 and the end 402 of the partition 40, make an arc line to obtain the profile of the partition 40. Specifically, the fan area 20A includes a third preset angle θ3 and a fourth preset angle θ4; The preset angle θ3 ranges from 30 degrees to 180 degrees, and the fourth preset angle θ4 is greater than the third preset angle θ3 . The airflow in the first air passage 50 is continuously superimposed on the direction of fan rotation, according to the flow distribution ratio of the airflow generated in the first air passage under the same speed per unit area (to ensure the uniformity of heat dissipation in the first air passage and to avoid entering the second air flow). The flow velocity of the channel is too large) to determine the angle values of the third preset angle θ3 and the fourth preset angle θ4.

Then take the center O of the fan area 20A as the starting point, use the straight line passing through the radius as the third dividing line r3, and the angle between the third dividing line r3 and the reference line F1 is the third preset angle θ3, and then the third dividing line can be determined. The position of the boundary line r3. The third dividing line r3 passes through the first air duct 50 and has an intersection 1 with the fan area 20A, and an intersection 2 with the molded line of the side wall 15; the starting end 401 of the molded line of the partition 40 is located on the line connecting the intersections 1 and 2 . Specifically, the line connecting the starting end 401 of the partition 40-shaped line and the center O is the third coordinate line R3, and the end of R3 located on the third dividing line r3, that is, the end between intersection point 1 and intersection point 2 is At the starting end 401, the length of R3 satisfies R3=K3*D/2, and K3 is greater than 1 and less than 2. The value of K3 in this embodiment is 0.2. It can be understood that the length R3 from the starting end 401 of the separator 40 to the center O is larger than the radius of the fan area 20A, and smaller than the length of the third boundary r3.

Then take the center O of the fan area 20A as the starting point, use the straight line passing through the radius as the fourth dividing line r4, and the angle between the fourth dividing line r4 and the reference line F1 is the fourth preset angle θ4, and then the fourth dividing line can be determined. The position of the boundary line r4. The fourth dividing line r4 crosses the first air duct 50 and has an intersection 3 with the fan area 20A, and an intersection 4 with the molded line of the side wall 15 ; Specifically, the line connecting the end 402 of the partition 40-shaped line and the center O is the fourth coordinate line R4, and the end of R4 located on the fourth dividing line r4, that is, the end between the intersection point 3 and the intersection point 4 is the end 402. The angle value of the fourth preset angle θ4 is K5*θ3, K5 is greater than 1 and less than 5, the length of R4 satisfies R4=K4*R3, and K4 is greater than 1 and less than 2. The value of K4 in this embodiment is 1.2. In this embodiment, the fourth coordinate line R4 is located on the interface F and located at the position of the second port 52 . It can be understood that the length R4 from the end 402 of the separator 40 to the center O is greater than R3 and less than the length of the fourth dividing line r4.

The width of the first air duct 50 (the distance between the fan area 20A and the arc segment) gradually increases along the fan rotation direction. Further, the width of the sub-air passage between the profile of the partition plate 40 and the fan area 20A is the same as the width between the second arc segment 155 and the fan area 20A. The direction in which the width of the first air duct 50 becomes larger is also the flow direction of the airflow, which avoids uneven distribution of flow velocity and uneven heat dissipation caused by the large amount of air accumulated during the rotation of the fan, and can improve the temperature in the first air duct 50. The uniformity of the flow velocity of the airflow, thereby improving the uniformity of the flow velocity of the air outlet.

In one embodiment of determining the start end 401 and the end 402 of the partition 40, the start end of the partition 40 is located on the line between the third boundary line r3 and the fan area 20A and the cavity side wall Above, the end of the partition 40 is located on the connection line between the fourth boundary r4 and the fan area 20A and the side wall of the cavity, and the partition is set according to the ratio of the actual airflow velocity that needs to be divided. The specific positions of the start end and the end of the plate 40 can further divide the required width of the sub-air ducts located on both sides of the partition plate 40 . It can also be understood as confirming the specific positions of the start end and the end on the connection line according to the ratio of the flow velocity of the airflow that is to be divided into two parts.

In one embodiment of determining the starting end 401 and the end 402 of the partition 40, the arc segment and the fan area 20A are two walls of the air duct, and the first air duct 50 has a preset width; The starting end of the partition 40 is located at a position where the width of the first air channel 50 is equal to the preset width, and the end of the partition 40 is located at the position of the second port 52 . The start end and the end of the partition plate 40 are set according to the proportion by which the flow velocity of the actual airflow needs to be divided, and then the required width of the sub-air ducts located on both sides of the partition plate 40 can be divided.

The volute 10 of the heat dissipation module in this embodiment is provided with a thermally conductive support 30 to replace the common cylindrical support between the cover plate 16 and the plate body 14, so as to prevent the fan 20 from being damaged when the volute 10 is subjected to external pressure, and The rigidity of the volute can be ensured; the velocity distribution of the airflow at the position of the air outlet 12 of the volute 10 can be improved, the flow velocity of the airflow discharged from the air outlet 12 can be made uniform, and the heat dissipation efficiency of the cooling fin group 70 can be improved. Further, the partition plate 40 is set in the first air duct 50, which can divide the airflow in the first air duct to achieve the effect of increasing the uniform flow velocity, and can regulate the first air duct 50 to enter the second air duct through the second port 52. The air flow velocity in the second area in the channel 60, combined with the flow guide support 30, makes the air flow velocity of the second air channel uniform, thereby improving the uniformity of the air output from the air outlet.

The above are only some examples and implementations of the present application, and the protection scope of the present application is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, and should cover all Within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (15)

1. A cooling module, characterized in that, It includes a volute, a fan, and a flow guide support; the volute includes an air outlet that communicates with the heat dissipation cavity, and the heat dissipation cavity includes a cavity side wall and a cavity bottom wall, and the cavity side wall is arranged on the The edge of the bottom wall of the cavity has an arc section, the fan and the flow guide support are arranged in the heat dissipation cavity, and the flow guide support is protruded from the bottom wall of the cavity; The area where the fan is located is the fan area, the first air duct is between the arc section and the fan area, and the second air duct is connected between the air outlet and the first air duct; The second air channel includes a first area and a second area, the first area and the second area are arranged along the width direction of the air outlet, and the interface between the first area and the second area The molded line is arc-shaped, and both the first area and the second area communicate with the first air duct, The air guiding support is located in the second air duct, the starting end of the air guiding supporting body is located in the second area, and the length extending direction of the air guiding supporting body intersects the width direction of the air outlet , the guide support body is used to divide the airflow in the second area, and guide part of the airflow to the first area, wherein the flow guide support body is a plate body, and the plate body The cross-sectional shape of is an airfoil; The fan area has a first preset angle θ1 and a second preset angle θ2, and a straight line passing through the radius of the fan area and the minimum position of the first air duct width is the reference line, The two sides constituting the first preset angle θ1 are respectively the reference line and the first coordinate line R1, the length of the first coordinate line R1 satisfies R1=K1*D/2, and D is the diameter of the fan area , the end of the first coordinate line R1 away from the center of the fan is the starting end of the flow guiding support; The two sides constituting the second preset angle θ2 are the reference line and the second coordinate line R2 respectively, the length of the second coordinate line R2 satisfies R2=K2*D/2, and D is the diameter of the fan area , K2 is greater than K1, and the end of the second coordinate line R2 away from the center of the circle is the end of the flow guiding support; Wherein, the angle value of the first preset angle θ1 and the second preset angle θ2 is greater than 180 degrees and less than 360 degrees, and the angle of the first preset angle θ1 is smaller than the angle of the second preset angle θ2 Angle; both K1 and K2 are greater than 1 and less than 10. 2. The heat dissipation module according to claim 1, wherein the heat dissipation cavity comprises a cavity top wall, the cavity top wall is connected to the cavity side wall and is opposite to the cavity bottom wall; the guide A flow support is supported between the chamber top wall and the chamber bottom wall. 3. The heat dissipation module according to claim 2, characterized in that, the first area is provided with a guide support, and the guide support in the first area is connected with the guide support in the second area. The support bodies are arranged at intervals, the length extension direction of the flow guide support body in the first area intersects the width direction of the air outlet, and the flow guide support body in the first area is used to guide the flow of the first area to Airflow diversion at the air outlet. 4. The heat dissipation module according to any one of claims 1-3, wherein the volute further comprises a baffle, and the baffle protrudes from the bottom wall of the cavity and is located at the first windshield. In the duct, the partition plate extends along the length direction of the first air duct, and the profile of the partition plate is opposite to the profile line of the arc segment at intervals. 5. The heat dissipation module according to claim 4, characterized in that, the profile of the partition is an arc line, or a plurality of arcs with different curvatures connected in sequence, or a Bezier curve, or an open spline curve. 6. The heat dissipation module according to claim 5, wherein the arc segment comprises a first arc segment and a second arc segment, and the profile of the partition is consistent with the second arc segment curves have the same curvature. 7 . The heat dissipation module according to claim 4 , wherein the width of the first air channel gradually increases along the rotation direction of the fan. 8 . 8. The heat dissipation module according to claim 6, characterized in that, the width of the sub-air duct between the profile of the baffle and the fan area is the same as the width of the second arc segment and the fan area. The width is the same between regions. 9. The heat dissipation module according to claim 4, wherein the fan area has a third preset angle θ3 and a fourth preset angle θ4, the angle of θ4 is K5*θ3, and the third preset angle The angle θ3 is greater than 30 degrees and less than 180 degrees; K5 is greater than 1 and less than 2; A straight line passing through the radius of the fan area and the minimum position of the first air duct width is the reference line, The two sidelines forming the third preset angle θ3 are respectively the reference line and the third dividing line, and the two sidelines forming the fourth preset angle θ4 are respectively the reference line and the fourth dividing line, The starting end of the partition is located on the line between the third boundary line and the fan area and the side wall of the chamber, and the end of the partition is located on the line between the fourth boundary line and the fan area. and the line between the side walls of the cavity. 10. The heat dissipation module according to claim 9, characterized in that, Determine the third coordinate line R3 on the third boundary line, the length of the third coordinate line R3 satisfies R3=K1*D/2, D is the radius of the fan area, and the third coordinate line R3 is far away from the The end of the center of the circle is the starting end of the partition; Determine the fourth coordinate line R4 on the fourth boundary line, the length of the fourth coordinate line R4 satisfies R4=K4*R3, K4 is greater than K1, and the end of the fourth coordinate line R4 away from the center of the circle is The end of the separator; wherein, the third predetermined angle θ3 is greater than 30 degrees and less than 180 degrees; K3 is greater than 1 and less than 2, and K4 is greater than 1 and less than 2. 11. The heat dissipation module according to claim 4, wherein the arc section and the fan area are two walls of the air channel, the first air channel has a preset width, and the There is a port between the first air duct and the second air duct, and the straight line where the port is located passes through the radius of the fan area; The starting end of the partition is located at a position where the width of the first air duct is equal to the preset width, and the end of the partition is located at the position of the port. 12. The heat dissipation module according to claim 1, wherein the side wall of the cavity comprises two opposite first flat plate segments and second flat plate segments connected by the arc segment, the first flat plate segment and the second flat segment are respectively located on opposite sides of the width direction of the air outlet, The arc section includes a connected first arc section and a second arc section, and the shape line in the length direction of the first arc section is an arc line, or is connected by multiple arcs with different curvatures; The shape line in the length direction of the second arc segment is a circular arc line, or a plurality of arc connections with different curvatures. 13. The heat dissipation module according to claim 1, further comprising a heat conduction element, the heat conduction element being connected to the outer surface of the volute. 14 . The heat dissipation module according to claim 1 , further comprising a heat dissipation fin set, the heat dissipation fin set being arranged outside the volute and connected to the air outlet. 15 . 15. An electronic device, characterized in that it comprises a main body and the heat dissipation module according to any one of claims 1-13, the heat dissipation module is assembled in the main body, and the heat dissipation module further includes heat dissipation fins A fin set, the heat dissipation fin set is arranged outside the volute and connected to the air outlet, and the heat dissipation fin set exposes the main body.

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