CN115066139A

CN115066139A - Heat dissipation module and electronic equipment

Info

Publication number: CN115066139A
Application number: CN202210010487.6A
Authority: CN
Inventors: 张哲�
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2021-12-03
Filing date: 2022-01-05
Publication date: 2022-09-16
Anticipated expiration: 2042-01-05
Also published as: WO2023098220A1; CN116234231A; WO2023098219A1; CN115003103B; CN115003103A; WO2023098219A9; CN115066139B; CN116234231B

Abstract

The application provides a heat dissipation module and electronic equipment, which comprise a volute, a fan and a flow guide 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 on the edge of the cavity bottom wall and provided with an arc-shaped section, the fan is arranged in the heat dissipation cavity, and the flow guide supporting body is convexly arranged on the cavity bottom wall; the area where the fan is located is a fan area, a first air channel is arranged between the arc-shaped section and the fan area, and a second air channel is arranged between the connecting 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 fan rotates to generate air flow, and the flow rate of partial air flow passing through the second area is larger than that of partial air flow passing through the first area; the diversion support body is located in a second area of the second air channel, the length extending direction of the diversion support body is intersected with the width direction of the air outlet, and the diversion support body is used for shunting airflow in the second area and guiding the airflow into the first area.

Description

Heat dissipation module and electronic equipment

The present application claims priority of chinese patent application having application number 202111470698.X and application name "heat sink module and electronic device" filed in 2021, 12 months, 03.

Technical Field

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

Background

In a thermal system of an electronic device such as a notebook computer, a heat dissipation module including a fan and a fin heat sink is used as the most important heat dissipation part. For example, in a notebook computer, heat generated by a main heating source is conducted to a volute body and a radiating fin, and then air flow generated by blowing of a fan takes away the heat, so that the purpose of reducing the temperature of the computer is achieved.

The existing fan heat dissipation module consists of a fan and a heat dissipation fin set, wherein the fan is used for providing air quantity required by heat dissipation, and the fin set is used for heat exchange. And the higher the flow velocity of flowing through the radiating fins, the higher the heat exchange coefficient of air and the radiating fins is, the more the heat taken away in unit time is, and the better the radiating performance is. Because the open design of conventional heat dissipation shell leads to there being high-speed district and low-speed district in the export of heat dissipation shell, and the difference is very big, and if the low-speed district velocity of flow is lower moreover, can further reduce the heat exchange efficiency of fin, this heat dispersion that will lead to whole module reduces.

Disclosure of Invention

The application provides a heat dissipation module, solves the technical problem that the great poor heat dispersion that leads to whole module of export airflow speed because of the heat dissipation shell reduces.

The application also provides an electronic device.

The heat dissipation module comprises a volute, a fan and a flow guide support body; the volute comprises a heat dissipation cavity and an air outlet communicated with the heat dissipation cavity; the heat dissipation cavity comprises a cavity side wall and a cavity bottom wall, the cavity side wall is arranged on the edge of the cavity bottom wall and is provided with an arc-shaped section, the fan and the flow guide supporting body are arranged in the heat dissipation cavity, and the flow guide supporting body is convexly arranged on the cavity bottom wall;

the area where the fan is located is a fan area, a first air channel is arranged between the arc-shaped section and the fan area, and a second air channel is connected 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 first area and the second area are connected with the first air duct,

the diversion support body is located in the second air channel, the starting end of the diversion support body is located in the second area, the length extending direction of the diversion support body is intersected with the width direction of the air outlet, and the diversion support body is used for shunting the airflow in the second area and guiding the shunted airflow to the first area.

The volute of the heat dissipation module in the embodiment is internally provided with the heat conduction support body, so that the speed distribution of airflow at the air outlet of the volute can be improved, the airflow discharged from the air outlet is uniform in flow velocity, and the heat dissipation efficiency of the heat dissipation fin group is improved. For example, the airflow generated by the rotation of the fan, the flow velocity of the partial airflow passing through the second area is greater than that of the partial airflow passing through the first area, and the airflow can be divided by the flow guide supporting body, so that the flow velocity of the airflow in the first area is improved, and the flow velocity of the air outlet is uniform.

In one embodiment, the heat dissipation chamber comprises a chamber top wall connected to the chamber side wall and opposite the chamber bottom wall; the flow guide support body is supported between the cavity top wall and the cavity bottom wall. The diversion support body is adopted to replace a common cylinder to support between the cover plate and the plate body in the example, so that the fan is prevented from being damaged when the volute is subjected to external pressure, and the rigidity of the volute can be ensured.

In one embodiment, the flow guide support body is a plate body, and the cross section of the plate body is in a wing shape, a rectangular shape or an arc shape. Specifically, the air flow of the arc-shaped track generated by the rotation of the fan can be more suitable for the air flow of the arc-shaped track generated by the rotation of the fan when the wing-shaped plate body and the arc-shaped plate body of the flow guide support body are used, and the flow direction of the flow distribution air flow can be more conveniently controlled.

In one embodiment, the fan area has a first preset angle θ 1 and a second preset angle θ 2, a straight line passing through the radius of the fan area and the position where the width of the first air duct is minimum is a reference line,

two borderlines forming the first preset angle θ 1 are the reference line and a first coordinate line R1 respectively, the length of the first coordinate line R1 satisfies that R1 is K1 × D/2, D is the diameter of the fan region, and the end of the first coordinate line R1 far away from the center of the circle is the starting end of the flow guide support body;

two borderlines forming the second preset angle θ 1 are the reference line and a second coordinate line R2, respectively, the length of the second coordinate line R2 satisfies that R2 is K2 × D/2, D is the radius of the fan region, K2 is greater than K1, and the end of the second coordinate line R2 far from the center of the circle is the tail end of the flow guide support body. The confirmation of the starting end and the tail end of the diversion support body of the embodiment can better achieve the purpose of diversion and ensure the flow rate of the airflow entering the first area.

In one embodiment, the first preset angle θ 1 and the second preset angle θ 2 have an angle value larger than 180 degrees and smaller than 360 degrees, and the angle of the first preset angle θ 1 is smaller than the angle of the second preset angle θ 2.

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

In one embodiment, the first area is provided with a flow guide support body, the flow guide support body in the first area and the flow guide support body in the second area are arranged at an interval, the length extending direction of the flow guide support body in the first area intersects with the width direction of the air outlet, and the flow guide support body is used for shunting the airflow in the first area. The diversion support body in the first area can further divide the air flow in the first area, so that the air flow can uniformly pass through the air outlet, and uniform heat dissipation of the heat dissipation fins is realized.

In one embodiment, the volute further includes a partition plate protruding from the bottom wall of the chamber and located in the first air duct, the partition plate extends along the length direction of the first air duct, and the molded line of the partition plate is spaced from and opposite to the molded line of the arc-shaped section. Along fan direction of rotation, the baffle divides first wind channel part into two subchannels, the amount of wind with fan rotation in-process continuous accumulation in first wind channel is shunted, can avoid the air current constantly to accumulate in first wind channel and produce the velocity of flow too big, the uneven problem of heat dissipation, promote the homogeneity of the velocity of flow of the air current in the first wind channel, avoid increasing the velocity of flow of local area when getting into the second wind channel, the velocity of flow that can make the air outlet divides more evenly.

In one embodiment, the molded line of the partition board is a circular arc line, or a plurality of arcs with different curvatures are connected in sequence, or a bezier curve, or an unclosed spline curve. The spiral case is internally provided with a partition plate which is partially identical or similar to the side wall molded line, so that smooth air outlet is ensured, and the uniformity is improved.

In one embodiment, the arc segments include a first arc segment and a second arc segment, and the contour of the baffle has the same curvature as the contour of the second arc segment. In this embodiment, the molded lines of the partition plate are the same as the molded lines of the arc-shaped section, so that the partition plate, the fan area and the second air duct of the volute form a dual volute structure, and the uniformity of air outlet is improved. In one embodiment, the width of the first air duct is gradually increased along the rotation direction of the fan, and the first arc-shaped section and the second arc-shaped section are arranged along the rotation direction of the fan. The direction of the width grow of the first air channel is also the flowing direction of the air flow, the phenomenon that the air quantity accumulated in the rotating process of the fan is large, the flow speed is too large, the heat dissipation is uneven is avoided, the uniformity of the flow speed of the air flow in the first air channel can be improved, and the uniformity of the flow speed of the air outlet is improved.

Further, the width of the sub-air duct between the molded line of the partition plate and the fan area is the same as the width between the second arc-shaped section and the fan area. The molded line of the second arc-shaped section can be directly selected when the partition plate is designed, and the smoothness of the air flow of the elevator air duct can also be improved.

In one embodiment, the fan region has a third preset angle θ 3 and a fourth preset angle θ 4, θ 4 has an angle K5 × θ 3, and K5 is greater than 1 and smaller than 5; the straight line passing through the radius of the fan area and the minimum position of the first air duct width is a reference line,

two borderlines constituting the third preset angle theta 3 are the reference line and the third borderline, respectively, and two borderlines constituting the fourth preset angle theta 4 are the reference line and the fourth borderline, respectively,

the starting end of the partition is located on a connecting line between the third boundary line and the fan region and the chamber side wall, and the tail end of the partition is located on a connecting line between the fourth boundary line and the fan region and the chamber side wall. The air current in the first wind channel is constantly accumulated and the velocity of flow is too big, shunts through the position that suitably sets up the baffle, can reach even velocity of flow, and then realizes even radiating purpose.

In one embodiment, a third coordinate R3 is determined on the third dividing line, the length of the first coordinate R3 satisfies R3K 1 x D/2, D is the diameter of the fan region, and the end of the first coordinate R3 far from the center of the circle is the starting end of the partition;

and determining a fourth coordinate R4 on the third boundary line, wherein the length of the fourth coordinate R4 satisfies the condition that R4 is K4R 3, K4 is greater than K1, and the end of the fourth coordinate R4 far away from the circle center is the tail end of the partition.

In one embodiment, the third preset angle θ 3 is greater than 30 degrees and less than 180 degrees; k3 is more than 1 and less than 2, and K4 is more than 1 and less than 2.

In one embodiment, the arc-shaped segment and the fan area are two walls of the air duct, the first air duct has a preset width, a port is arranged between the first air duct and the second air duct, and the straight line of the port passes through the radius of the fan area; the starting end of the partition plate is located at the position where the width of the air duct is equal to the preset width value, and the tail end of the partition plate is located at the position of the port. The positions of the starting end and the tail end of the partition plate in the width direction of the first air duct are not limited, the processing is convenient, and only the shunting is realized.

In one embodiment, the chamber sidewall comprises two opposite first and second plate segments connected by the arc segment, the first and second plate segments are respectively located at two opposite sides of the air outlet in the width direction,

the arc-shaped section comprises a first arc-shaped plate and a second arc-shaped plate which are connected, and the molded line in the length direction of the first arc-shaped section is a circular arc line or is connected by a plurality of arcs with different curvatures; the molded line in the length direction of the second arc-shaped segment is a circular arc line or is connected by a plurality of arc-shaped segments with different curvatures. The arc-shaped design of the arc-shaped section of the volute is beneficial to the consistency of the air outlet direction of each position when the fan rotates.

In one embodiment, the heat dissipation module further includes a heat conducting member connected to the outer surface of the volute. The heat conducting piece 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 disposed outside the volute and connected to the air outlet. The radiating fin group is used for radiating heat discharged from the volute.

The electronic equipment provided by the application comprises a main body and the heat dissipation module, wherein the heat dissipation module is arranged in the main body, and the heat dissipation fin group is exposed out of the main body. This application adopts heat dissipation module can realize even heat dissipation.

In summary, the heat dissipation module of the present application has the flow guiding support body disposed in the heat dissipation housing to support the space between the cover plate and the plate body, so as to prevent the volute from damaging the fan when the volute is subjected to external pressure, and ensure the rigidity of the volute; the speed distribution of airflow at the position of the volute air outlet can be improved, the airflow discharged from the air outlet is uniform in flow velocity, the heat dissipation efficiency of the radiating fin group is improved, and the heat dissipation efficiency of the electronic equipment is further improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present application, the drawings required to be used in the embodiments or the background art of the present application will be described below.

Fig. 1 is a schematic structural diagram of an electronic device provided in 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 diagram of the heat dissipation module shown in FIG. 2 with a cover plate removed;

FIG. 4 is a schematic top view of the heat dissipation module shown in FIG. 3;

fig. 5 and 6 are schematic views illustrating a position forming process of the deflector support shown in fig. 3;

FIG. 7 is a schematic view of the heat dissipation module shown in FIG. 3 with a plurality of flow-guiding support bodies;

fig. 8 is a velocity distribution diagram of the air outlet of the flow guiding support of the heat dissipation module of the present application;

fig. 9 and 10 are schematic views of a spacer position forming process shown in fig. 3.

Detailed Description

Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure. The electronic device can be an integrated desktop computer, a notebook computer and other electronic devices which need to be internally cooled. The embodiment of the present application takes the notebook computer 200 as an example for explanation.

The notebook computer 200 includes a main body 210, a display rotatably installed in the main body 210, and a heat dissipation module 100 located inside the main body 210. The main body 210 includes a housing, and electronic components and related structural members, such as a processor and a circuit board, installed in the housing for implementing computer functions, and the processor and the circuit board are components with large heat generation. The casing is provided with a heat dissipation air port for communicating with the outside, and the heat in the notebook computer 200 is dissipated out through the heat dissipation air port through the heat dissipation module.

The heat dissipation module of the present application is described in detail with reference to the following embodiments.

Referring to fig. 2 and 3 together, fig. 2 is a schematic structural diagram of the heat dissipation module shown in fig. 1, wherein a heat dissipation fin set 70 is shown and only outlines thereof; FIG. 3 is a schematic structural diagram of the heat dissipation module shown in FIG. 2 with a cover plate removed; the heat dissipation module 100 includes a volute 10, a fan 20 installed in the volute 10, and a flow guiding support 30 and a heat dissipation fin set 70 disposed in the volute 10. The volute 10 includes a plate body 14, a side wall 15 and a cover plate 16. The volute 10 comprises a heat dissipation cavity 11 and an air outlet 12 communicated with the heat dissipation cavity 11. The fan 20 and the flow guide support 30 are disposed in the heat dissipation chamber 11, the flow guide support 30 is protruded from the wall of the heat dissipation chamber, and the flow guide support 30 is used for supporting the space between the side wall 15 and the cover plate 16. The air outlet 12 is located at one side of the volute 10 and is used for flowing out the hot air in the heat dissipation chamber 11. The heat dissipation fin set 70 is located at the air outlet 12, and is used for cooling and dissipating the hot air coming out of the heat dissipation cavity 11. The flow guide support 30 prevents the volute 10 from damaging the fan 20 when being subjected to external pressure, and can ensure the rigidity of the volute; but also can improve the speed distribution of the airflow at the air outlet 12 of the volute 10 and improve the heat dissipation efficiency of the radiating fin group.

In this embodiment, the volute sidewall 15 is protruded from the plate 14 to form a body, the cover plate 16 covers the sidewall and is spaced from and opposite to the plate 14, and the body and the cover plate 16 form the heat dissipation chamber 11 and the air outlet 12. The side surface of the side wall 15 facing the heat dissipation cavity 11 is a cavity side wall of the heat dissipation cavity 11, and the surface of the plate body 14 facing the heat dissipation cavity 11 is a cavity bottom wall; the surface of the cover plate 16 facing the heat dissipation cavity is a cavity top wall, and the flow guide support body 30 is convexly arranged on the cavity bottom wall and supported between the cavity top wall and the cavity bottom wall. The volute 10 of the present embodiment is volute-shaped as a whole, and has a heat dissipation chamber 11 with a volute contour and a side wall 15 extending in a volute profile.

The heat dissipation chamber 11 of the volute 10 includes a fan mounting area therein, the plate 14 is provided with a fan inlet (not shown), and the cover plate 16 covering the body is provided with a fan inlet (not shown) corresponding to the fan inlet; the fan inlet, the fan inlet of the plate 14 corresponds to the fan mounting area. In the fan displacement fan mounting area, when the fan 20 rotates, the external air flow enters the volute 10 through the fan inlet and the fan inlet of the plate 14. The fan 20 of this embodiment includes fan axle 21 and a plurality of fan leaf 22, and a plurality of fan leaf 22 just evenly set up around fan axle 21 interval, and the clearance between per two adjacent fan leaf 22 is the runner (not marked in the figure), and a plurality of fan leaf 22 evenly spaced sets up, guarantees that the runner interval between per two adjacent fan leaf 22 is the same. One end of each fan blade 22 is connected with the fan shaft, the other end is a free end, and an air opening of a flow channel is formed between the free ends of every two adjacent fan blades and used for flowing out of air flow in the flow channel.

The ends of the plurality of fan blades 22 remote from the fan shaft 21 form a circular ring profile when rotated about the fan shaft 21. The plurality of fan blades 22 are uniformly arranged around the fan shaft 21 to ensure that the air volume of the flow passage between every two fan blades is the same when the fan blades rotate, that is, the air volume blown out of the fan through each flow passage when the fan 20 rotates is the same and uniform. The fan 20 is arranged in the heat dissipation cavity 11, the fan shaft 21 is connected with the plate body 14, the axis of the fan shaft 21 of the fan 20 is perpendicular to the plate body 14, the fan blades 22 are arranged at intervals with the side walls 15, namely, the interval distance between the fan blades 22 and the side walls 15 ensures the passing of air flow and the safe distance between the fan and the heat dissipation module when the fan rotates.

Referring to fig. 4, fig. 4 is a schematic top view of the heat dissipation module shown in fig. 3. Specifically, the plate body 14 includes an inner surface 141 (cavity bottom wall) and end edges 142; the end edge 142 is an edge of the plate 14 extending in a straight line, and may 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 is also the width direction of the air outlet. The sidewall 15 includes a first end 151 and a second end 152. The sidewall 15 is disposed convexly on the inner surface 141 and extends along a portion of the edge of the inner surface 141, the first end 151 of the sidewall 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; the sidewall 15 defines an opening between the first end 151 and the second end 152, and the end edge 142 is located at the opening. It will be appreciated that the side wall 15 is a strip-shaped sheet, the side of which is connected to the inner surface and extends from one end of the end edge 142 along the edge of the inner surface to the other end of the end edge 142. The shape and contour of the cover plate 16 are the same as those of the plate body 14, the cover plate 16 covers the side wall 15, the heat dissipation cavity 11 is formed among the cover plate 16, the side wall 15 and the plate body 14, and the air outlet 12 is formed at the opening position. It will also be appreciated that side walls 15 are provided around the inner surface edges of the panel 14, the side walls 15 being provided with said ventilation openings. The end edge 142 is an edge that encloses the outlet 12. The length of the end edge 142 is square and is the width direction of the outlet 12.

For convenience of description, the width direction of the spiral case 10 (the direction parallel to the end edge 142, that is, the width direction of the air outlet 12) is defined as an X-axis direction, the length direction of the spiral case 10 (the direction perpendicular to the end edge 142, that is, the direction perpendicular to the plane of the air outlet) is defined as a Y-axis direction, and the thickness direction of the spiral case 10 is defined as a Z-axis direction; the X-axis direction, the Y-axis direction and the Z-axis direction are mutually vertical in pairs. It should be noted that the following parallel descriptions in this application are allowed to have a certain tolerance range, and the following numerical values such as the diameter value, the radius value, the pitch value, etc. in this application are allowed to have a certain tolerance range.

The heat dissipation module 100 further includes a heat conducting member (not shown), the heat conducting member is installed outside the spiral case 10, specifically, on an outer surface of the plate 14 opposite to the inner surface 141, and is used for contacting with a heating element of the notebook computer to transfer heat in the notebook computer 200 to the spiral case 10, the spiral case 10 and a guiding support body installed in the spiral case 10 receive the heat transferred by the heat conducting member, and the heat is taken away by an airflow generated by the fan 20 to dissipate heat, so as to achieve the purpose of dissipating heat of the computer. Specifically, the heat conducting member may be a metal plate or a metal pipe, and is directly connected to an electronic component with a large heat value, such as a processor and a circuit board of a notebook computer. In other embodiments, the thermal conductor member is disposed along the outer circumferential surface of the sidewall 15, i.e., the sidewall 15 faces away from the outer surface of the heat dissipation chamber 11.

Referring to fig. 4, fig. 4 is a schematic top view of the heat dissipation module shown in fig. 3; in this embodiment, the sidewall 15 is a thin plate extending in a volute shape, and includes a first plate section 153, a first arc-shaped section 154, a second arc-shaped section 155, an arc-shaped connecting section 159, and a second plate section 156, where the first plate section 153, the first arc-shaped section 154, the second arc-shaped section 155, the arc-shaped connecting section 159, and the second plate section 156 are sequentially connected to enclose the shape of the volute 10, and the contour of the sidewall 15 can be understood as the shape of the volute 10. The first arc-shaped section 154, the second arc-shaped section 155, and the arc-shaped connecting section 159 are arc-shaped plate bodies, and the first plate section 153 and the second plate section 156 are rectangular plate bodies. The first flat section 153 is disposed opposite to the second arc-shaped section 155 and the second flat section 156 connected by the arc-shaped connecting section 159 along the width direction of the scroll casing 10, and the first flat section 153 and the second flat section 156 are located at opposite sides of the air outlet 12. Along the length of the volute 10, the first arc-shaped segment 154 is opposite to the air outlet 12. In other embodiments, the sidewalls 15 may be flat or arc-shaped, depending on the application.

In this embodiment, the sidewall 15 is perpendicular to the inner surface 141, i.e., the first plate segment 153, the first arc segment 154, the second arc segment 155, the arc connecting segment 159 and the second plate segment 156 are perpendicular to the inner surface 141. The first plate section 153, the first arc-shaped section 154, the second arc-shaped section 155, the arc-shaped connecting section 159 and the second plate section 156 are all thin plates having a uniform thickness dimension. Wherein, the first arc-shaped section 154 and the second arc-shaped section 155 are connected to form an arc-shaped section. The thickness of the first plate section 153, the first arc-shaped section 154, the second arc-shaped section 155, the arc-shaped connecting section 159 and the second plate section 156 is the dimension in the X-axis direction. It is understood that the first plate segment 153, the first arc segment 154, the second arc segment 155, the arc connecting segment 159 and the second plate segment 156 have the same thickness or different thicknesses, but each segment has a uniform thickness. The first plate section 153, the first arc-shaped section 154, the second arc-shaped section 155, the arc-shaped connecting section 159 and the second plate section 156 may be integrally formed in a mold to directly form the sidewall, or the first plate section 153, the first arc-shaped section 154, the second arc-shaped section 155, the arc-shaped connecting section 159 and the second plate section 156 may be connected after being formed separately. In other embodiments, the side wall 15 may be a plate body with a non-uniform thickness.

The sidewall 15 in this embodiment is uniformly thick, and for convenience of description, the volute 10 and the fan 20 are both shown in a line form in the top view of fig. 4, and the contour line of the volute 10 is collectively called as a profile line; such as the profile of the sidewall 15, i.e., the profile of the first plate segment 153, the first arcuate segment 154, the second arcuate segment 155, the arcuate connecting segment 159, and the second plate segment 156. Of course, the line of the sidewall 15 shown in the figure may be a connection line of the respective molded lines of the first plate segment 153, the first arc segment 154, the second arc segment 155, the arc connecting segment 159 and the second plate segment 156. In the case of a non-uniform thickness of the side wall 15, the profile is the side contour of the side wall 15 facing the side wall surface of the heat dissipation cavity 11. It is noted that the first arcuate segment 154 and the second arcuate segment 155 form the arcuate segments described.

For the description of the above-mentioned molded lines, taking the first plate segment 153 as an example, the molded line of the first plate segment 153 is a line extending along the length direction thereof and passing through the center position of the first plate segment 153 (also is a center line forming the overall contour of the first plate segment 153), and the width and thickness of the first plate segment 153 are symmetric lines based on the molded line; and in the length direction of the first plate segment, the contour line of the orthographic projection of the first plate segment 153 on the plate body 14 is parallel to the molded line and has the same bending direction and curvature. The first plate segment 153 has two sides extending substantially in the longitudinal direction. One side faces the heat dissipation cavity, the other side faces the outside of the volute, the two side faces are arc-shaped faces, and the tangent plane where the molded line is located is parallel to the two side faces and the curvature and the bending direction of the arc are completely consistent. The profile of the flow guide support, the first arc-shaped section 154, the second arc-shaped section 155, the arc-shaped connecting section 159 and the second plate section 156 is completely defined as the profile of the first plate section 153. The shape of the profile described later may represent the shape of the flow guide support body or the sidewall corresponding to the profile.

The first arc-shaped segment 154 and the second arc-shaped segment 155 are arc-shaped plates, and the first arc-shaped segment 154 and the second arc-shaped segment 155 are smoothly connected. The molded lines of the first arc-shaped segment 154 and the second arc-shaped segment 155 in the length direction are a circular arc line, or the molded lines of the first arc-shaped segment 154 and the second arc-shaped segment 155 are connected in a plurality of arcs with different curvatures. In this embodiment, the longitudinal profile of the first arc-shaped segment 154 and the second arc-shaped segment 155 is a bezier curve. Of course, the longitudinal contour lines of the first arc-shaped segment 154 and the second arc-shaped segment 155 may also be formed by connecting a plurality of arcs in sequence, and the arc bending directions of the first arc-shaped segment 154 and the second arc-shaped segment 155 face the fan. In the present embodiment, the center of one or more arcs of the profiles forming the first arc-shaped segment 154 and the second arc-shaped segment 155 is located in the fan region 20A.

The first plate segment 153 is a rectangular plate and is smoothly connected to an end of the first arc segment 154 away from the second arc segment 155, and an end of the first plate segment 153 away from the first arc segment 154 is the first end 151. The second plate section 156 is a rectangular plate body, and is connected to an end of the second arc-shaped section 155 away from the first arc-shaped section 154, and an end of the second plate section 156 located at the air outlet 12 is the second end 152. In the embodiment, the second plate section 156 and the second arc-shaped section 155 are connected by the arc-shaped connecting section 159, and the second plate section 156 is connected by the arc-shaped connecting section 159 and the second arc-shaped section 155, so that smooth transition can be realized, and the profile of the whole side wall 15 is ensured to be smooth, thereby enabling the airflow in the heat dissipation chamber 11 to flow smoothly.

The arc-shaped curvature of the arc-shaped connection section 159 faces away from the fan region, and the profile of the arc-shaped connection section 159 may be an arc having only one curvature. It is understood that the curved connecting section 159 is formed by the connection of the second plate section 156 and the second curved section 155 being chamfered. Also understood as an extension of the arcuate connecting section 159 to the second plate section 156. In other embodiments, the second plate segment 156 is directly angled to the second arcuate segment 155.

Referring to fig. 4, the area where the fan 20 is located is named as a fan area 20A, it can be understood that the outline and volume of the fan area are identical to the outline and volume of the fan 20, that is, the fan area 20A is equivalent to the stereoscopic projection of the fan 20 and completely coincides with the fan 20. The outer contour of the fan area 20A is also embodied in the form of a line, in particular a circle. When the fan blade 22 rotates, the end of the fan blade 22 away from the center O forms a circular ring surface with the center of the fan 20 as the center O, and the circular ring surface is the outer contour surface of the fan region 20A. The distance from the fan region 20A to the sidewall or partition 40 described below refers to the distance from the outer contour surface of the fan region 20A to the sidewall 15 or partition 40.

The plane where two radii connected by an included angle in the fan area 20A are located is taken as an interface F, the interface F passes through the center O of the fan area 20A, and the interface F is actually a dummy surface and is shown in the form of a line in the drawing. Interface F divides fan zone 20A into a first fan zone 201A (corresponding to angle a1 in fig. 4) and a second fan zone 201B (corresponding to angle a2 in fig. 4). Along the length direction of the scroll casing 10, i.e., the Y-axis direction, the second fan region 201B is close to the air outlet 12; the first fan region 201A is spaced apart from and opposite the first arc-shaped segment 154 and the second arc-shaped segment 155. The first and second plate segments 153, 156 (including the arc-shaped connecting segment 159) are located on opposite sides of the second fan region 201B along the width direction of the volute 10, i.e., the X-axis direction. The centers of the first arc-shaped segment 154 and the second arc-shaped segment 155 are located on the diameter passing through the interface F and spaced from the center O. It should be noted that the included angle a1 is an included angle of two connection lines which take the connection point of the first flat plate section 153 and the first arc-shaped section 154 as a starting point and take the connection point of the second arc-shaped section 155 and the arc-shaped connection section 159 as an end point and pass through the circle center; the sum of angle A2 and angle A1 is 360 degrees, i.e., the interface F passes through the start and end points.

In this embodiment, a gap is formed between the fan region 20A and the sidewall 15 and between the fan region and the air outlet 12 in the heat dissipation cavity 11, and the gap can be regarded as an air duct. The air duct communicates with the air outlet 12, and the overall profile of the air duct in this embodiment can be understood as a volute shape, and is actually disposed around the fan region 20A. The gap between the first fan region 201A and the first arc-shaped section 154 and the second arc-shaped section 155 is the first air duct 50. The second air duct 60 is arranged in the area between the second fan area 201B and the first flat plate section 153, the second flat plate section 156 (including the arc-shaped connecting section 159) and the air outlet 12, and the second air duct 60 is communicated with the air outlet 12; the width direction of the volute 10 is the length direction of the second air duct 60, and the length direction of the volute 10 is the width direction of the second air duct 60.

In this embodiment, the two ports of the first air duct 50 are a first port 51 and a second port 52, respectively, and the first port 51 is located at the junction of the second arc-shaped segment 155 and the arc-shaped connection segment 159, i.e., the interface F passes through the fan region 20A to a position between the junction of the second arc-shaped segment 155 and the arc-shaped connection segment 159. The second port 52 is located where the first plate segment 153 joins the first arcuate segment 154; i.e., interface F, passes through fan zone 20A to a location between the junction of first plate segment 153 and first arcuate segment 154. The first air duct 50 communicates with the second air duct 60 through the first port 51 and the second port 52. The width direction of the fan 20 is the length direction of the second air duct 60, and the length direction of the fan 20 is the width direction of the second air duct 60. It is understood that a first air duct 50 is disposed between the arc-shaped segment and the fan region 20A, and a second air duct 60 is disposed between the air outlet 12 and the first air duct 50.

In one embodiment, the width of the first port 51 is smaller than the width of the second port 52 along the radial direction (the diameter direction with the circle center O as a circle point) of the fan region 20A, and the width of the first air duct 50 gradually increases along the direction from the first port 51 to the second port 52, i.e., the length direction (clockwise direction ω) of the first air duct 50. In the present embodiment, the fan is described as rotating clockwise. After the fan 20 is started, the fan blades rotate clockwise, the airflow generated at the first port 51 flows toward the second port along the first air duct 50, and in the first air duct 50 between the first port 51 and the second port 52, because the fan blades 22 generate the airflow simultaneously, the flow of the airflow is continuously superposed from the first port 51 to the second port 52, the width of the first air duct 50 is gradually increased along the length direction of the first air duct 50, and the uniformity of the flow rate can be controlled on the premise that the flow is continuously increased in the process that the airflow flows through the first air duct 50.

Referring to fig. 4, the flow guiding support 30 is located in the second air duct 60, and the second air duct 60 is communicated 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 are connected to the first air duct 50. The width direction of the air outlet 12 is an X-axis direction, and actually, a third region (not shown) is further disposed on the other side of the first region 60A, the third region, the first region 60A, and the second region 60B are arranged and communicated at one time along the width direction of the air outlet 12, the third region corresponds to and is communicated with the first port 51 of the first air duct 50, and the second region 60B corresponds to and is communicated with the second port 52 of the first air duct 50.

As shown in fig. 4, wherein the first region 60A and the second region 60B are divided by a boundary F2, the profile of the boundary F2 is arc-shaped, the starting end of the profile of the boundary F2 is located at the intersection of the boundary F and the fan region 20A and at the position of the second port 52 of the first air duct 50, the profile of the boundary F2 has an intersection with the outlet 12 (the end edge 142), and the intersection is the end of the profile of the boundary F2, wherein the profile of the boundary F2 is shown to have a portion extending out of the outlet 12 for the sake of easy distinction.

Based on the above division, the first region 60A and the second region 60B with different flow velocities are formed on two sides of the interface F2 in the second air duct 60; due to the configuration and location of the volute 10, the first air duct 50 and the second air duct 60, the first area 60A will have a greater airflow rate than the second area 60B. And the third region is located on the other side of the first region 60A, and the flow velocity of the air flow is different from that of the first region 60A and greater than that of the first region 60A, it will be understood that the two sides of the interface F2 form regions of different flow velocity, excluding the third region.

In other embodiments, the first region 60A and the second region 60B may be divided according to the actual airflow rate measured across the intersection of the end edge 142 of the interface F2 of the second duct 60, wherein the actual airflow rate of the first region 60A is greater than the actual airflow rate of the second region 60B.

The profile shape of the dividing plane F2 is set according to the airflow direction entering the second air duct from the second port 52 of the first air duct 50 and the airflow direction (arc shape) generated by the fan blade of the second area fan 20 near the second port, 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 line of the dividing plane F2 may also be a straight line, the starting end of the straight line of the dividing plane F2 is located at the intersection of the dividing plane F and the fan region 20A, and is located at the second port 52 of the first air duct 50, and the line of the dividing plane F2 has an intersection with the outlet 12 (the end edge 142), and the intersection is the end of the line of the dividing plane F2. The first and

second regions

60A and 60B on either side of the linear line interface F2 provide different flow rates. The interface F2 is only an exemplary boundary. Similarly, the boundary between the third area and the first area 60A is also divided, and the airflow velocity of the third area is generally greater than that of the first area 60A and directly flows out of the air outlet.

The diversion support body is located in the second air duct, the starting end of the diversion support body is located in the second area 60B, the length extending direction of the diversion support body 30 is intersected with the width direction of the air outlet 12 (X-axis direction), and the diversion support body 30 is used for shunting the air flow of the second area 60B and shunting part of the shunted air flow to the first area 60A.

The airflow flow of the second area 60B includes the airflow flow generated by the fan 20 itself and flowing from the second port 52 of the first air duct 50 into the second area, and the airflow quantity generated by the fan at the position of the second air duct 60 and the airflow quantity flowing from the second port 52 of the first air duct 50 can be divided by the flow guide support 30 to balance the airflow speed in the width direction of the air outlet 12, so as to avoid that the area (the first area 60A) located in the second air duct 60 and substantially in the middle of the area is a lower airflow speed area in the width direction of the air outlet 12, thereby avoiding that the airflow speed in the area is lower, avoiding the heat dissipation efficiency of the heat dissipation fins corresponding to the area, that is, improving the heat dissipation effect of the heat dissipation fins corresponding to the area.

In this embodiment, the deflector support 30 is an airfoil, wherein the cross-sectional shape of the deflector support 30 is: airfoil shapes, such as low speed airfoil: NACA-4, NACA-6 series airfoils, etc. In other embodiments, the flow guiding support 30 may also be an arc-shaped plate or a flat plate, and the cross-sectional shape of the corresponding plate is rectangular or arc-shaped. The flow guiding support 30 can be made of plastic material to avoid increasing the weight of the heat dissipating module. Certainly, the diversion support 30 may also be made of metal such as aluminum, so as to achieve the diversion and support functions and assist the heat conduction function.

The flow guide support body 30 includes a first flow guide surface 301 and a second flow guide surface 302, the first flow guide surface 301 and the second flow guide surface 302 are oppositely disposed, the first flow guide surface 301 faces the fan 20, and the second flow guide surface 302 faces the first plate segment 153. The first flow guiding surface 301 and the second flow guiding surface 302 perform an airflow guiding function. The flow guide support body 30 further comprises a starting end 31 and a tail end 32, and the starting end 31 and the tail end 32 are both connected with the first flow guide surface 301 and the second flow guide surface 302. In this embodiment, the flow guide support 30 is located substantially in the second region 60B near the first region 60A; the leading end 31 and the trailing end 32 of the deflector support 30 are both located within the second region 60B. In this embodiment, the flow guiding support 30 is an airfoil, and the first flow guiding surface 301 and the second flow guiding surface 302 are arc surfaces, which are more suitable for the flow direction of the air flow generated by the rotation of the fan 20, so that the air flow is smooth.

In other embodiments, the starting end 31 of the flow guide support 30 is located in the second region 60B, the tail end 32 is located in the first region 60A, and the superposed airflow of the first air duct 50 and the second air duct 60 starts to be divided when passing through the starting end 31 and enters the first region 60A along the length extension direction of the flow guide support 30, so that the direction of the airflow entering the first region 60A can be adjusted, and more targeted flow guide and heat dissipation can be achieved.

In this embodiment, the length extending direction of the flow guide support 30 intersects with the width direction of the air outlet 12 (X-axis direction), that is, the flow guide support 30 is inclined relative to the air outlet 12 (end edge 142), so as to generate an inclined branch channel, and easily branch the air volume in the second area 60B to the first area 60A of the second air duct. The length of the flow guide support body extends in a direction of a straight line indicated by 303 in the figure, and the straight line passes through the flow guide support body 30 to connect the starting end 31 and the tail end 32.

Referring to fig. 5 and 6 together, fig. 5 and 6 are schematic views illustrating a position setting process of the fluid-guiding support body shown in fig. 3; taking a diversion support 30 as an example, the positions of the starting end 31 and the tail end 32 of the diversion support 30 are described, wherein the tail end 32 is close to the air outlet 12, the length extending direction of the diversion support 30 is intersected with the width direction of the air outlet 12, that is, the diversion support 30 and the air outlet 12 form an inclined angle, that is, the diversion support 30 and the end 142 form an inclined angle; the inclination angle of the airflow guide support 30 with respect to the outlet 12 (the end edge 142) is greater than or equal to 90 degrees.

The fan area has a first preset angle θ 1 and a second preset angle θ 2, wherein the air volume flowing from the first air duct 50 through the second port 52 is superposed with the air volume generated by the fan 20 in the second area 60B of the second air duct 60, so that the air volume and the flow rate at the positions of the two sides of the second air duct 60 can be increased, and the values of the first preset angle θ 1 and the second preset angle θ 2 can be determined according to the ratio of the flow rates of the second area 60B and the first area 60A after the fan rotates at the same rotation speed in a unit area and the air flow generated by the second air duct.

In the first air duct 50 and the second air duct 60, the connection position between the second plate section 156 (the arc-shaped connection section 159) and the second arc-shaped section, that is, the position of the first port 51 is the position where the width of the first air duct 50 is minimum, that is, the position where the distance between the side wall 15 and the fan region 20A is minimum, a straight line passing through the radius and the connection position (the first port 51) between the second plate section 156 (the arc-shaped connection section 159) and the second arc-shaped section 155 is defined as a reference line F1, the reference line is located on the dividing plane F, then, the straight line passing through the radius is taken as a first dividing line r1 with the center O of the fan region 20A as a starting point, the included angle between the first dividing line r1 and the reference line F1 is a first preset angle θ 1, and the value of the first preset angle θ 1 is 180 degrees to 360 degrees. In this embodiment, the value of the first preset angle θ 1 is selected to be 210 degrees. It is understood that the position of the first dividing line r1 is actually determined according to the first preset angle θ 1.

The first boundary line r1 has an intersection point 1 with the fan region 20A, the first boundary line r1 has an intersection point 2 with the first plate section 153, and the starting end 31 of the profile of the flow guide support 30 is located between the intersection points 1 and 2. A connecting line between the start end 31 of the profile of the flow guide support body 30 and the center O is a first coordinate line R1, the end of the R1 located on the first boundary line R1, that is, the end between the intersection point 1 and the intersection point 2 is the start end 31, the length of the R1 satisfies that R1 is K1 x D/2, and K1 is greater than 1 and smaller than 10. In this embodiment, K1 has a value of 2, and D is the diameter of the fan region. It can be understood that the specific position of the starting end 31 can be actually determined according to the ratio of the air volume passing between the starting end 31 and the fan area 20A and the side wall, and after the intersection point 1 and the intersection point 2 are confirmed, the R1 is not needed, and the position of the starting end 31 located on the connecting line of the intersection point 1 and the intersection point 2 is directly determined according to the ratio.

The end 32 of the profile of the flow guide support 30 is defined according to a second preset angle θ 2 and a second coordinate line R2, specifically, a circle center O of the fan area 20A is taken as a starting point, a straight line passing through a radius is taken as a second dividing line R2, an included angle between the second dividing line R2 and the reference line F1 is the second preset angle θ 2, θ 2 is greater than θ 1, and the value of the second preset angle θ 2 is 180 degrees to 360 degrees. The second preset angle θ 2 is selected to be 270 degrees in the embodiment.

The fan area 20A has a second boundary line r2 with an intersection point 3, the second boundary line r2 has an intersection point 4 with the first plate segment 153 or the air outlet, and the end 32 of the profile of the flow guide support 30 is located between the intersection point 3 and the intersection point 4. A connecting line between the tail end 32 of the profile of the flow guide support body 30 and the center O is a second coordinate line R2, the 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 tail end 32, the length of the R2 satisfies that R2 is K2 × D/2, K2 is greater than 1 and smaller than 10, and R2. Greater than R1. In this example K2 is 4.

After the starting end 31 and the end 32 of the profile of the flow guide support body 30 are confirmed, an airfoil is made between the two. One section of the diversion support 30 faces the first air duct 50, the other end faces the air outlet 12, the air volume flowing from the second port 52 enters the second air duct 60 and then is superposed with the air volume produced by the second air duct 60, and the diversion support 30 divides the air volume, as shown by the arrow direction in the figure.

Referring to fig. 8, fig. 8 is a velocity distribution diagram of the air outlet of the flow guiding support 30 of the heat dissipating module of the present application. The darker curve of colour is for not setting up the wind speed distribution of the water conservancy diversion supporter 30 of this application in the picture, and the distribution of the wind speed of the air outlet of light color curve after having set up water conservancy diversion supporter 30, and two lines show that the position of water conservancy diversion supporter 30 is different, and the wind speed distribution is different. There will normally be a high velocity region and a low velocity region (the first region 60A of the second air duct 60) at the outlet 12 of the volute 10, and it can be seen that there is a large low velocity region in the middle portion (the first region 60A of the second air duct 60) at the outlet 12 of the volute 10. Such a low flow rate may reduce the heat exchange efficiency of the radiating fins. As shown in fig. 8, the diversion support 30 guides part of the air volume into the first area 60A of the second air duct 60, and it can be seen that the speed of the first area 60A (low speed area) of the second air duct 60 of the air outlet 12 of the volute 10 can be increased by using the wing-shaped diversion support 30, so that the heat dissipation efficiency of the fins can be increased, and the heat dissipation effect of the whole heat dissipation module can be enhanced.

It can be understood that the first air duct 50 and the second air duct 60 surround the periphery of the fan area 20A together, the air volume is continuously accumulated along the rotation direction (clockwise) when the fan 20 rotates, the first preset angle θ 1 and the second preset angle θ 2 are preset angles, and the flow distribution of the air flow in the second air duct 60 flowing to the air outlet is divided, so that the flow speed of the air flow low-speed area of the air outlet 12 can be increased. Or, the air flow of the second air duct 60 at the position of the first boundary line R1 is divided at the start end 31 of the flow guide support 30, the distance from the start end 31 of the first coordinate line R1 to the fan region 20A and the distance from the start end 31 of the first coordinate line R1 to the first flat plate 153 can be determined according to the air volume required by the middle region of the second air duct 60 (the first region 60A of the second air duct 60), for example, the distance from the start end 31 to the intersection 1 is smaller than the distance from the start end 31 to the intersection 2, the flow channel with smaller distance is distributed by the flow guide support 30 with less flow, that is, the specific position of the start end 31 can be designed according to how much the air volume of the air flow of the two branch channels is divided by the air flow at the position of the first boundary line R1.

Referring to fig. 7, fig. 7 is a schematic view illustrating the heat dissipation module shown in fig. 3 having a plurality of flow guiding supports; in one embodiment, two flow guide supports 30 are provided, and the flow guide supports 30a and the second flow guide support 30b may have the same or different lengths and the same or different shapes. First water conservancy diversion supporter 30A and second water conservancy diversion supporter 30b interval set up, and the first water conservancy diversion supporter 30A length of this embodiment is greater than second water conservancy diversion supporter 30 b's length, and second water conservancy diversion supporter 30b is located the first region 60A of second wind channel 60, and first water conservancy diversion supporter 30A and second water conservancy diversion supporter 30 b's incline direction is the same or close, water conservancy diversion supporter in the first region can with air current in the first region further shunts, makes the air current can evenly pass through the air outlet, and the velocity distribution of flow that flows out air outlet 12 is more even, realizes radiating fin's even heat dissipation. The starting end and the end of the second guide support 30b may be determined according to the starting end and the end of the guide support 30 of the above embodiment.

Referring to fig. 9 and 10, fig. 9 and 10 are schematic views illustrating a position forming process of the partition shown in fig. 3. The heat dissipation module of the present embodiment further includes a partition 40, and the partition 40 is located in the first air duct 50 and is protruded on an inner surface 141 (fig. 3) of the plate 14, that is, on the bottom wall of the cavity. The partition 40 is an arc-shaped thin plate, and the length direction thereof extends along the length direction of the first air duct 50; the partition plate 40 and the partial arc-shaped segment are arranged in parallel at intervals, the curve direction of the molded line of the partition plate 40 faces the fan 20, the molded line of the partition plate 40 is an arc line, or a plurality of arcs with different curvatures are sequentially connected, or the molded line is a Bezier curve, or a smooth curve, or a non-closed spline curve. The volute is internally provided with a partition plate with the same or similar part with the side wall molded lines, so that smooth air outlet is ensured, and the uniformity is improved.

The baffle 40 is less than or equal to the height of the side wall 15 (or arcuate segment). In the present embodiment, the molded line of the second arc-shaped segment 155 in the arc-shaped segment is the same as the molded line of the partition plate 40, and the length thereof may be equal or different, which is equivalent to that the partition plate 40 having the molded line partially the same as or similar to the molded line of the sidewall 15 is provided in the scroll casing 10, so that the partition plate 40, the fan region 20A and the sidewall form a dual scroll casing structure, thereby improving the uniformity of the outlet air. And the molded lines of the second arc-shaped section can be directly selected when the partition plate is designed, and the smoothness of the air flow of the elevator air duct can also be improved. Along fan direction of rotation, baffle 40 divides first wind channel 50 part into two subchannels, shunts the amount of wind of fan rotation in-process continuous accumulation in first wind channel 50, can avoid the air current constantly to accumulate in first wind channel and produce the velocity of flow too big, leads to the uneven problem of heat dissipation in the first wind channel, promotes the homogeneity of the velocity of flow of the air current in the first wind channel. The flow rate of the air flowing into the second area 60B of the second air duct 60 from the first air duct can be adjusted, so as to avoid the excessive flow rate of the air, and further adjust the flow rate flowing to the first area 60A of the second air duct 60. The sub-duct between the molded line of the partition 40 and the fan region 20A has the same width as that of the first duct 50 between the second arc-shaped segment 155 and the fan region 20A, and in fact, the molded line of the second arc-shaped segment 155 is rotated clockwise along a circle to a partition position, and the partition is formed by referring to the molded line of the second arc-shaped segment 155.

After determining the starting end 401 and the tail end 402 of the partition board 40, making an arc line to obtain a profile of the partition board 40, specifically, the fan area 20A includes a third preset angle θ 3 and a fourth preset angle θ 4; the third preset angle theta 3 is 30 degrees to 180 degrees, and the fourth preset angle theta 4 is larger than the third preset angle theta 3. The air flows in the first air duct 50 are continuously superimposed in the fan rotation direction, and the angle values of the third preset angle θ 3 and the fourth preset angle θ 4 can be determined according to the flow distribution proportion of the air flows generated in the first air duct at the same rotation speed in unit area (ensuring the heat dissipation uniformity of the first air duct and avoiding the excessive flow speed entering the second air duct).

Then, the center O of the fan area 20A is used as a starting point, a straight line passing through the radius is used as a third dividing line r3, and the included angle between the third dividing line r3 and the reference line F1 is used as a third preset angle θ 3, so that the position of the third dividing line r3 can be determined. The third dividing line r3 passes through the first duct 50 and has an intersection 1 with the fan region 20A and an intersection 2 with the profile of the side wall 15; the starting end 401 of the line of the diaphragm 40 is located on the line connecting the intersection point 1 and the intersection point 2. Specifically, a connecting line between the starting end 401 of the molded line of the partition plate 40 and the circle center O is a third coordinate line R3, the end of the R3 located on the third dividing line R3, that is, the end between the intersection point 1 and the intersection point 2 is the starting end 401, the length of the R3 satisfies that R3 is K3 x D/2, and K3 is greater than 1 and smaller than 2. The value of K3 in this example was 0.2. It is understood that the length R3 from the starting end 401 of the partition 40 to the center O is greater than the radius of the fan region 20A and less than the length of the third dividing line R3.

Then, the center O of the fan area 20A is used as a starting point, a straight line passing through the radius is used as a fourth boundary line r4, and the included angle between the fourth boundary line r4 and the reference line F1 is used as a fourth preset angle θ 4, so that the position of the fourth boundary line r4 can be determined. The fourth dividing line r4 passes through the first duct 50 and has an intersection point 3 with the fan region 20A and an intersection point 4 with the profile of the sidewall 15; the end 402 of the diaphragm 40 profile is located on the line connecting intersection point 3 and intersection point 4. Specifically, a connection line between the tail end 402 of the molded line of the partition 40 and the center O is a fourth coordinate line R4, the end portion of the R4 located on the fourth dividing line R4, that is, the end between the intersection point 3 and the intersection point 4 is the tail end 402, the angle value of the fourth preset angle θ 4 is K5 × θ 3, K5 is greater than 1 and smaller than 5, the length of R4 satisfies that R4 is K4 × R3, and K4 is greater than 1 and smaller than 2. The value of K4 in this example is 1.2. The fourth coordinate line R4 is located on the dividing plane F and at the location of the second port 52 in this embodiment. It will be appreciated that the length R4 from the end 402 of the partition 40 to the center O is greater than the length R3 less than the fourth demarcation line R4.

The width of the first air path 50 (the distance from the fan region 20A to the arc-shaped section) becomes gradually larger in the fan rotating direction. Further, the width of the sub-duct between the molded line of the partition 40 and the fan area 20A is the same as the width between the second arc-shaped segment 155 and the fan area 20A. The direction of the width enlargement of the first air duct 50 is also the flowing direction of the air flow, so that the uneven distribution of the flow speed and uneven heat dissipation caused by more accumulated air volume in the rotating process of the fan are avoided, the uniformity of the flow speed of the air flow in the first air duct 50 can be improved, and the uniformity of the flow speed of the air outlet is further improved.

In an embodiment of determining the starting end 401 and the ending end 402 of the partition 40, the starting end of the partition 40 is located on the line between the third dividing line r3 and the fan area 20A and the chamber sidewall, and the ending end of the partition 40 is located on the line between the fourth dividing line r4 and the fan area 20A and the chamber sidewall, and the specific positions of the starting end and the ending end of the partition 40 are set according to the proportion of the actual airflow to be divided, so as to divide the required sub-duct widths on both sides of the partition 40. It is also understood that the specific locations of the start and end on the line are determined based on the ratio of the flow rates of the gas streams intended to be divided into two portions.

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

In the embodiment, the heat-conducting support 30 is arranged in the volute 10 of the heat dissipation module to replace a space between the common cylindrical support cover plate 16 and the plate body 14, so that the fan 20 is prevented 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 air outlet 12 of the volute 10 can be improved, so that the airflow discharged from the air outlet 12 has uniform velocity, and the heat dissipation efficiency of the fin assembly 70 is improved. Furthermore, the partition plate 40 is arranged in the first air duct 50, so that air flow in the first air duct can be divided, the effect of improving the uniformity of flow speed is achieved, the flow speed of air flow in the second area, entering the second air duct 60 through the second port 52, of the first air duct 50 can be regulated, and the flow speed of air flow in the second air duct is homogenized by combining the flow guide support body 30, so that the air outlet uniformity of the air outlet is improved.

The above embodiments and embodiments of the present application are only examples and embodiments, and the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and all the changes or substitutions should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A heat dissipation module is characterized in that,

comprises a volute, a fan and a flow guide support body; the volute comprises a heat dissipation cavity and an air outlet communicated with the heat dissipation cavity, the heat dissipation cavity comprises a cavity side wall and a cavity bottom wall, the cavity side wall is arranged on the edge of the cavity bottom wall and is provided with an arc-shaped section, the fan and the flow guide supporting body are arranged in the heat dissipation cavity, and the flow guide supporting body is convexly arranged on the cavity bottom wall;

the area where the fan is located is a fan area, a first air channel is arranged between the arc-shaped section and the fan area, and a second air channel is connected 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 first area and the second area are both communicated with the first air duct,

2. The heat dissipation module of claim 1, wherein the heat dissipation cavity comprises a cavity top wall connected to the cavity side wall and opposite the cavity bottom wall; the flow guide support body is supported between the cavity top wall and the cavity bottom wall.

3. The heat dissipation module of claim 1 or 2, wherein the flow guiding support is a plate body, and the cross-sectional shape of the plate body is an airfoil, a rectangle or an arc.

4. The heat dissipation module of any of claims 1-3, wherein the fan region has a first predetermined angle θ 1 and a second predetermined angle θ 2, and a line passing through a radius of the fan region and a position where the first air channel has a minimum width is a reference line,

two borderlines forming the second preset angle θ 2 are the reference line and a second coordinate line R2 respectively, the length of the second coordinate line R2 satisfies that R2 is K2 × D/2, D is the diameter of the fan region, K2 is greater than K1, and the end of the second coordinate line R2 far away from the center of the circle is the tail end of the flow guide support body;

the angle value of the first preset angle theta 1 and the second preset angle theta 2 is larger than 180 degrees and smaller than 360 degrees, and the angle of the first preset angle theta 1 is smaller than that of the second preset angle theta 2; both K1 and K2 are greater than 1 and less than 10.

5. The heat dissipation module according to any one of claims 1 to 4, wherein the first region is provided with a flow guiding support, the flow guiding support in the first region and the flow guiding support in the second region are disposed at an interval, a length extending direction of the flow guiding support in the first region intersects with a width direction of the air outlet, and the flow guiding support is configured to split an air flow flowing from the first region to the air outlet.

6. The heat dissipation module of any of claims 1-5, wherein the volute further comprises a partition plate protruding from the bottom wall of the cavity and located inside the first air channel, the partition plate extends along the length direction of the first air channel, and the profile of the partition plate is spaced from the profile of the arc-shaped segment.

7. The heat dissipation module of claim 6, wherein the shape of the partition is a circular arc, or a plurality of arcs with different curvatures are connected in sequence, or a Bezier curve, or a non-closed spline curve.

8. The heat dissipation module of claim 7, wherein the arcuate segments comprise a first arcuate segment and a second arcuate segment, and wherein the contour of the baffle has the same curvature as the contour of the second arcuate segment.

9. The heat dissipation module of claims 6-8, wherein the width of the first air channel gradually increases along the rotation direction of the fan.

10. The heat dissipation module of claim 8, wherein the width of the sub-duct between the profile of the partition and the fan region is the same as the width between the second arc-shaped segment and the fan region.

11. The heat dissipation module of any of claims 1-8, wherein the fan region has a third predetermined angle θ 3 and a fourth predetermined angle θ 4, θ 4 has an angle K5 × θ 3, and θ 3 has an angle greater than 30 degrees and less than 180 degrees; k5 is more than 1 and less than 2;

the straight line passing through the radius of the fan area and the minimum position of the first air duct width is a reference line,

the starting end of the partition is located on a connecting line between the third boundary line and the fan region and the chamber side wall, and the tail end of the partition is located on a connecting line between the fourth boundary line and the fan region and the chamber side wall.

12. The heat dissipation module of claim 11,

determining a third coordinate line R3 on the third dividing line, wherein the length of the first coordinate line R3 satisfies R3-K1-D/2, D is the radius of the fan region, and the end of the first coordinate line R3 away from the center of the circle is the starting end of the partition;

determining a fourth coordinate line R4 on the third boundary line, the length of the fourth coordinate line R4 satisfying R4-K4-R3, K4 being greater than K1, the end of the fourth coordinate line R4 away from the center of the circle being the terminal end of the partition, wherein the angle of the third preset angle θ 3 is greater than 30 degrees and less than 180 degrees; k3 is more than 1 and less than 2, and K4 is more than 1 and less than 2.

13. The thermal module according to any of claims 6-12, wherein the arc-shaped segment and the fan area are two walls of the air channel, the first air channel has a predetermined width, and a port is disposed between the first air channel and the second air channel, and the port is located on a straight line passing through a radius of the fan area;

the starting end of the partition plate is located at the position where the width of the first air duct is equal to the preset width value, and the tail end of the partition plate is located at the position of the port.

14. The thermal module of any of claims 1-13, wherein the cavity sidewall comprises two opposing first and second plate segments connected by the arcuate segment, the first and second plate segments being located on opposite sides of the outlet width,

the arc section comprises a first arc plate and a second arc plate which are connected, and the molded line in the length direction of the first arc section is a circular arc line or is connected by a plurality of arcs with different curvatures; the molded line in the length direction of the second arc-shaped segment is a circular arc line or is connected by a plurality of arcs with different curvatures.

15. The heat dissipation module of claim 1, further comprising a thermally conductive member coupled to an outer surface of the volute.

16. The heat dissipation module of claim 1, further comprising a heat dissipation fin set disposed outside the volute and connected to the air outlet.

17. An electronic device comprising a main body and the heat dissipation module as recited in any one of claims 1 to 16, wherein the heat dissipation module is housed in the main body, and the heat dissipation fin group is exposed from the main body.