Heat dissipation module and electronic equipment

Abstract

The utility model discloses a heat dissipation module and electronic equipment, the heat dissipation module comprises a wind wheel, a volute and a volute tongue, the volute and the volute tongue are matched to define a volute chamber and an air outlet communicated with the volute chamber, and the wind wheel is arranged in the volute chamber. The volute comprises a side coaming extending in the circumferential direction of the volute chamber, the side coaming comprises a connecting section used for limiting an air outlet, the volute tongue and the connecting section are oppositely arranged, and the air outlet is located between the connecting section and the volute tongue. Wherein the volute tongue comprises a guide section and an outlet section which are connected with each other, the guide section is connected with the side coaming and is arranged opposite to the connecting section, the inner wall surface of the guide section is an arc surface, in the direction far away from the wind wheel, the inner wall surface of the guide section is obliquely arranged along the direction far away from the connecting section, and the distance between the inner wall surface of the guide section and the connecting section is gradually increased. According to the technical scheme, the air volume loss can be reduced, so that the performance of the heat dissipation module can be improved in a limited space, and the heat dissipation effect is improved.

Description

Technical Field

[0001] The present application relates to the field of heat dissipation technology, and in particular to a heat dissipation module and an electronic device. Background Art

[0002] With the development of high-performance electronic equipment technology such as computers or tablets, more electronic components are integrated into electronic equipment. The increase in electronic components increases the overall heat generation of electronic equipment. Therefore, it is necessary to set a heat dissipation module in the electronic equipment to dissipate heat.

[0003] The heat dissipation module of existing electronic equipment usually includes a volute, a wind wheel located in the volute and a heat dissipation structure. The volute is provided with a volute tongue for separating the airflow carried by the wind wheel. The airflow is discharged through the air outlet and flows into the heat dissipation structure. However, since the volute tongue often directly adopts a transition structure with sudden angle changes such as an inclined plane, a large wind pressure loss will be caused when the separated airflow contacts the surface of the volute tongue close to the air outlet, resulting in a reduction in the air volume at the air outlet, thereby affecting the heat dissipation effect of the heat dissipation module. Utility Model Content

[0004] The embodiments of the present application provide a heat dissipation module and an electronic device, which can reduce air volume loss, so as to improve the performance of the heat dissipation module and the heat dissipation effect within a limited space.

[0005] In a first aspect, an embodiment of the present application provides a volute structure, the volute structure comprising a wind wheel, a volute and a volute tongue, the volute and the volute tongue cooperate to form a volute chamber and an air outlet connected to the volute chamber, the wind wheel is arranged in the volute chamber;

[0006] The volute comprises a side panel extending along the circumference of the volute chamber, the side panel comprises a connecting section for defining the air outlet, the volute tongue is arranged opposite to the connecting section, and the air outlet is located between the connecting section and the volute tongue;

[0007] The volute tongue comprises a guide section and an outlet section connected to each other, the end of the guide section away from the outlet section is connected to the side panel, the inner wall surface of the guide section is arranged in an arc surface, and in the direction away from the wind wheel, the inner wall surface of the guide section is inclined toward the direction away from the connecting section, and the distance between the inner wall surface of the guide section and the connecting section gradually increases.

[0008] In some embodiments, the guide section is connected to the outlet section in a smooth transition.

[0009] In some of the embodiments, a rounded structure is formed at a junction between an end of the guide section away from the outlet section and the side panel.

[0010] In some embodiments, an angle θ between a tangent line of an inner wall surface of the guide section close to an end point of the side panel and a horizontal direction is less than 35°.

[0011] In some embodiments, the vertical distance between the outlet section and the connecting section is D, and the angle between the tangent line at point A on the inner wall surface of the guide section and the horizontal direction is Z, satisfying: Z = θ + [a (90° - θ) / L];

[0012] Wherein, 0≤a≤L, L≤0.4D, a is the vertical distance between point A and the end point of the guide section close to the side panel, and L is the vertical distance between the exit section and the end point of the guide section close to the side panel.

[0013] In some embodiments, the vertical distance between the end point of the outlet section away from the guide section and the end connection of the guide section and the side panel is H, and the vertical distance between the end point of the outlet section away from the guide section and the guide section is h, and h is less than 0.2H.

[0014] In some embodiments, the heat dissipation module also includes a heat dissipation base plate and a plurality of heat dissipation fins, the plurality of heat dissipation fins are arranged at intervals on the heat dissipation base plate, a heat dissipation gap is formed between two adjacent heat dissipation fins, the heat dissipation base plate is connected to the volute, and the heat dissipation gap is connected to the air outlet.

[0015] In some embodiments, an inner wall surface of the outlet section is parallel to a surface of the heat dissipating fin facing the heat dissipating gap.

[0016] In some embodiments, the inner wall surface of the connecting section is gradually expanded in a direction away from the wind wheel.

[0017] In a second aspect, an embodiment of the present application provides an electronic device, which includes the above-mentioned heat dissipation module.

[0018] Based on the heat dissipation module and electronic device of the embodiment of the present application, by making the inner wall surface of the guide section of the volute tongue into an arc shape, in the direction away from the wind wheel, the inner wall surface of the guide section is inclined away from the connecting section, and the distance between the inner wall surface of the guide section and the connecting section gradually increases. In this way, when the airflow carried by the wind wheel directly hits the guide section, it will be smoothly guided to turn under the action of the arc surface, so that the airflow can be ejected from the air outlet more smoothly, reducing the occurrence of wind pressure loss caused by the sudden change of the angle of the volute tongue, thereby reducing the air volume loss, and then achieving the improvement of the performance of the heat dissipation module in a limited space and improving the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 This is a schematic structural diagram of an embodiment of a heat dissipation module of the present application;

[0021] Figure 2 This is a schematic diagram of the assembly structure of the heat dissipation module of this application;

[0022] Figure 3 This is a schematic cross-sectional structural diagram of the heat dissipation module of the present application;

[0023] Figure 4 This is a schematic diagram of the dimensions of the heat dissipation module of this application.

[0024] Description of Figure Numbers:

[0025] 100, heat dissipation module; 10, wind wheel; 20, volute; 21, side panel; 211, connecting section; 22, cover plate; 30, volute tongue; 31, guide section; 32, outlet section; 40, heat dissipation base plate; 50, heat dissipation fins; 60, air outlet; 70, air inlet.

[0026] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] In order to make the objectives, technical solutions and advantages of the present application clearer, the following part will further describe the embodiments of the present application in detail in conjunction with the accompanying drawings.

[0028] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0029] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0031] With the development of high-performance electronic equipment technology such as mobile phones or tablets, more electronic components are integrated into electronic equipment. The increase in electronic components makes the overall heat generation of electronic equipment greater. Therefore, it is necessary to set a heat dissipation module in the electronic equipment to dissipate heat.

[0032] The heat dissipation module of existing electronic equipment usually includes a volute, a wind wheel located in the volute and a heat dissipation structure. The volute is provided with a volute tongue for separating the airflow carried by the wind wheel. The airflow is discharged through the air outlet and flows into the heat dissipation structure. However, since the volute tongue often directly adopts a transition structure with sudden angle changes such as an inclined plane, a large wind pressure loss will be caused when the separated airflow contacts the surface of the volute tongue close to the air outlet, resulting in a reduction in the air volume at the air outlet, thereby affecting the heat dissipation effect of the heat dissipation module.

[0033] In order to solve the above problems, the first aspect of the present application proposes an electronic device, which includes but is not limited to drones, robots, computers, touch tablets, etc. In an embodiment of the present application, the electronic device includes a body and a heat dissipation module 100. The body includes a housing and a processor, a circuit board, and other electronic components and related structural parts installed inside the housing for realizing control functions, and the processor and the circuit board are components that generate relatively large amounts of heat. A heat dissipation vent is provided on the housing for communicating with the outside world, and the heat in the housing is dissipated through the heat dissipation vent through the heat dissipation module 100.

[0034] In order to improve the heat dissipation efficiency of the heat dissipation module 100. Figures 1 to 3In a second aspect, the present application proposes a heat dissipation module 100. The heat dissipation module 100 includes a volute 20, a wind wheel 10, and a volute tongue 30. The volute 20 and the volute tongue 30 cooperate to form a volute chamber and an air outlet 60 connected to the volute chamber, and the wind wheel 10 is arranged in the volute chamber.

[0035] The volute 20 is shaped like a snail shell. The material of the volute 20 includes, but is not limited to, metal and plastic. The volute 20 can be a structural whole, or it can be formed by assembling a plurality of parts. In the present embodiment, the volute 20 includes two cover plates 22 that are arranged oppositely and at intervals, and a side panel 21 vertically connected between the two cover plates 22. The side panel 21 and the two cover plates 22 are fixed in a detachable manner by screws or snaps, respectively, to facilitate subsequent maintenance and replacement. Alternatively, the side panel 21 can also be an integral structure with one of the cover plates 22, and then be detachably fixed to the other cover plate 22. This can save assembly components of the volute 20, ensure structural strength, and improve installation efficiency.

[0036] The wind wheel 10 can be a centrifugal wind wheel 10, which has the advantages of large air volume, low noise and stable performance. The wind wheel 10 is installed on one of the cover plates 22 of the volute 20, and one of the cover plates 22 of the volute 20 is provided with an air inlet 70 connected to the volute chamber, and the air inlet 70 is opposite to the air inlet side of the wind wheel 10. The wind wheel 10 includes a driving member and an impeller, and the impeller is driven to rotate by the driving member so that the external airflow can enter the volute 20 from the air inlet 70, and then be ejected from the air outlet 60 for air cooling. It should be noted that the opening shape of the air inlet 70 includes but is not limited to a circle, an ellipse or an oblong, so as to facilitate processing and manufacturing and ensure the air outlet efficiency. In addition, the wind wheel 10 also includes a circuit board, the circuit board is connected to the driving member, and the circuit board is connected to an external device through a lead to control the transmission of control signals and currents to control the driving member, thereby controlling the rotation speed of the impeller.

[0037] The volute tongue 30, when the airflow of the wind wheel 10 passes near the volute tongue 30, the volute tongue 30 divides them into two parts, part of the airflow flows to the air outlet 60, and part of the airflow flows back to the volute 20 through the gap between the volute tongue 30 and the wind wheel 10, and returns to the volute tongue 30 to participate in new diversion after rotating with the impeller of the wind wheel 10 for one circle in the volute 20. The function of the volute tongue 30 is to prevent the gas from circulating in the volute 20 to improve efficiency. At the same time, the volute tongue 30 is also an important component that affects noise. The volute tongue 30 of the present application includes a connected guide section 31 and an outlet section 32, so that when the airflow of the wind wheel 10 hits the guide section 31, it will flow along the guide section 31 to the outlet section 32, and then be discharged along the air outlet 60. The end of the guide section 31 away from the outlet section 32 is connected to the side panel 21, and is set at an angle to divert the airflow. It should be noted that the guide section 31 and the outlet section 32 of the volute tongue 30 can be independently processed and manufactured, and then connected to the end of the side panel 21 away from the connecting section 211 by means of screws or buckles, so as to facilitate the later maintenance and replacement of the volute tongue 30. Among them, the connecting section 211 is located at the end of the side panel 21 to cooperate with the air outlet 60. Or in order to ensure the structural strength of the volute tongue 30, the guide section 31 and the outlet section 32 of the volute tongue 30 can be configured as a part of the side panel 21, that is, the guide section 31, the outlet section 32 and the side panel 21 are an integrated structure, so that the structure is guaranteed and the production efficiency is improved.

[0038] In the present application, by making the inner wall surface of the guide section 31 of the volute tongue 30 into an arc shape, in the direction away from the wind wheel 60, the inner wall surface of the guide section 31 is inclined away from the connecting section 211, and the distance between the inner wall surface of the guide section 31 and the connecting section 211 gradually increases. In this way, when the airflow carried by the wind wheel 10 directly hits the guide section 31, it will be smoothly guided to turn under the action of the arc surface, so that the airflow can be ejected from the air outlet 60 more smoothly, reducing the occurrence of wind pressure loss caused by the sudden change of the angle of the volute tongue 30, thereby reducing the loss of air volume, thereby achieving the improvement of the performance of the heat dissipation module 100 in a limited space, improving the heat dissipation effect, and being suitable for electronic devices with limited space, thereby saving space for electronic devices.

[0039] In some structural forms, the guide section 31 is connected to the outlet section 32 in a smooth transition. That is, the connection between the guide section 31 and the outlet section 32 is smooth, curved or arc-shaped to ensure the smoothness and continuity of the transition, so as to avoid sharp connection points between the outer wall surface of the guide section 31 and the outer wall surface of the outlet section 32, ensure safety during installation, and further enable the airflow of the wind wheel 10 to flow smoothly from the inner wall surface of the guide section 31 to the inner wall surface of the outlet section 32, thereby ensuring the smoothness of the airflow, reducing resistance, and thus ensuring the air volume, and reducing the generation of airflow noise.

[0040] Optionally, a chamfered structure is formed at the junction of the end of the guide section 31 away from the outlet section 32 and the side panel 21. In this way, a sharp connection point is avoided at the junction of the guide section 31 and the side panel 21, so that the airflow of the wind wheel 10 can be smoothly divided into two airflows when it contacts the junction of the guide section 31 and the side panel 21, one airflow flows along the guide section 31 to the air outlet 60, and the other airflow flows through the side panel 21 to the gap between the side panel 21 and the wind wheel 10, thereby ensuring the smoothness of the airflow, reducing resistance, and thus ensuring the air output, while reducing the generation of airflow noise during the wind flow.

[0041] Combined with reference Figure 4 In some structural forms, the angle θ between the tangent of the inner wall surface of the guide section 31 near the end point of the side panel 21 and the horizontal direction is less than 35°. It is understandable that θ can be 30°, 25°, 20°, 15°, etc. In this way, the airflow of the wind wheel 10 can enter the guide section 31 approximately along the tangent of the rotation direction in the volute 20, avoiding the airflow loss caused by too large a turning range when the airflow enters the guide section 31, improving the smoothness of the airflow flowing into the guide section 31, reducing resistance, and further reducing the loss of airflow.

[0042] Furthermore, the vertical distance between the outlet section 32 and the connecting section 211 is D, and the angle between the tangent line at point A on the inner wall surface of the guide section 31 and the horizontal direction is Z, which satisfies: Z = θ + [a (90° - θ) / L]. Wherein, 0 ≤ a ≤ L, L ≤ 0.4D, a is the vertical distance between point A and the end point of the guide section 31 close to the side panel 21, and L is the vertical distance between the outlet section 32 and the end point of the guide section 31 close to the side panel 21. Wherein, the slope of each point of the inner wall surface of the guide section 31 in the direction toward the outlet section 32 is processed by the above calculation method, so that the arc shape of the inner wall surface of the guide section 31 is smoother, the resistance is reduced, and the smoothness of the airflow is further improved.

[0043] In some structural forms, combined with reference Figure 4 , the vertical distance between the end point of the outlet section 32 away from the guide section 31 and the end connection point of the guide section 31 and the side panel 21 is H, and the vertical distance between the end point of the outlet section 32 away from the guide section 31 and the guide section 31 is h, and h is less than 0.2H. The above-mentioned setting limits the proportion of the outlet section 32 in H, thereby increasing the proportion of the guide section 31 in H, and further increasing the space for the airflow to turn, making the turning smoother, reducing the airflow directly flowing to the outlet section 32, so that most of the airflow of the wind wheel 10 flows into the guide section 31 and is then directed to the bend, so as to further reduce the air volume loss.

[0044] In order to cool the airflow ejected from the air outlet 60, refer to Figures 1 to 3In some structural forms, the heat dissipation module 100 also includes a heat dissipation base plate 40 and a plurality of heat dissipation fins 50. The plurality of heat dissipation fins 50 are arranged on the heat dissipation base plate 40 at intervals, and a heat dissipation gap is formed between two adjacent heat dissipation fins 50. The heat dissipation base plate 40 is connected to the volute 20, and the heat dissipation gap is connected to the air outlet 60.

[0045] It should be noted that the heating element of the electronic device can be connected to the heat dissipation base plate 40 by thermal conduction, and when a plurality of heat dissipation fins 50 are installed on the heat dissipation base plate 40, they are spaced and arranged in parallel along the length direction of the air outlet 60. In this way, two adjacent heat dissipation fins 50 can define a heat dissipation gap, and the heat dissipation gap is connected to the air outlet 60. Therefore, during the operation of the electronic device, the heat generated by the heating element can be thermally conducted to the heat dissipation base plate 40, and at the same time, the wind wheel 10 drives the airflow from the air inlet 70 to the air outlet 60, and the blown airflow directly exchanges heat with the heat dissipation fins 50 when flowing through the heat dissipation fins 50. The airflow after heat exchange takes away the heat on the heat dissipation fins 50, thereby improving the purpose of heat dissipation of the electronic device. Among them, the heat dissipation base plate 40 can be an integral structure with one of the cover plates 22 of the volute 20, and extend in a direction away from the air outlet 60, thereby ensuring the structural strength of the heat dissipation base plate 40 to improve the stability of the installation of the heat dissipation fins 50.

[0046] In order to improve the heat dissipation effect, the heat dissipation fin 50 is a metal part. Exemplarily, the material of the heat dissipation fin 50 includes but is not limited to iron, aluminum, copper or other materials with high thermal conductivity. The heat dissipation fin 50 is formed in a flat sheet shape. In this way, the space occupied by the heat dissipation fin 50 can be saved, and the number of heat dissipation fins 50 can be increased, thereby improving the heat dissipation effect. Of course, the present application is not limited to this. The heat dissipation fin 50 is a corrugated heat dissipation fin, that is, in the flow direction of the airflow in the heat dissipation gap, the heat dissipation fin 50 extends in a broken line shape. In this way, the heat dissipation area of ​​the heat dissipation fin 50 can be increased, and the time that the airflow stays in the heat dissipation gap can also be increased, thereby improving the heat dissipation effect. In some examples, in the flow direction of the airflow in the heat dissipation gap, the flow area of ​​the heat dissipation gap first gradually decreases, and then gradually increases, that is, the flow area of ​​the inlet and outlet of the heat dissipation gap is greater than the flow area of ​​the middle part of the heat dissipation gap. This makes it easy for the airflow to enter the heat dissipation gap from the air outlet 60, and when passing through the minimum flow area of ​​the heat dissipation gap, the pressure of the airflow can be increased, and the time the airflow stays in the heat dissipation gap can be extended, thereby ensuring reliable heat dissipation of the airflow and the heat dissipation fins 50. Specifically, the cross-sectional area of ​​the heat dissipation fins 50 first gradually increases, and then gradually decreases. For example, the cross-sectional area of ​​the heat dissipation fins 50 is elliptical or spindle-shaped. In this way, it can be achieved that in the flow direction of the airflow in the heat dissipation gap, the flow area of ​​the heat dissipation gap first gradually decreases, and then gradually increases.

[0047] Furthermore, the inner wall surface of the outlet section 32 is parallel to the surface of the heat dissipation fins 50 facing the heat dissipation gap, so that the airflow ejected from the outlet section 32 can be ejected into the heat dissipation gap along a straight line, reducing air volume loss and improving the heat dissipation effect.

[0048] Furthermore, the inner wall surface of the connecting section 211 is gradually expanded in the direction away from the wind wheel 10. In this way, the outlet area of ​​the air outlet 60 is increased, thereby increasing the air volume and improving the heat dissipation effect.

[0049] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0050] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A heat dissipation module, characterized in that: It comprises a wind wheel, a volute case and a volute tongue, wherein the volute case and the volute tongue cooperate to form a volute chamber and an air outlet communicated with the volute chamber, and the wind wheel is arranged in the volute chamber; The volute comprises a side panel extending along the circumference of the volute chamber, the side panel comprises a connecting section for defining the air outlet, the volute tongue is arranged opposite to the connecting section, and the air outlet is located between the connecting section and the volute tongue; The volute tongue comprises a guide section and an outlet section connected to each other, the end of the guide section away from the outlet section is connected to the side panel, the inner wall surface of the guide section is arranged in an arc surface, and in the direction away from the wind wheel, the inner wall surface of the guide section is inclined toward the direction away from the connecting section, and the distance between the inner wall surface of the guide section and the connecting section gradually increases.

2. The heat dissipation module according to claim 1, characterized in that: The guide section is connected to the outlet section in a smooth transition.

3. The heat dissipation module according to claim 1, characterized in that: A chamfered structure is formed at a junction between one end of the guide section away from the outlet section and the side panel.

4. The heat dissipation module according to claim 1, characterized in that: An angle θ between a tangent line of an inner wall surface of the guide section close to an end point of the side panel and a horizontal direction is smaller than 35°.

5. The heat dissipation module according to claim 4, characterized in that: The vertical distance between the outlet section and the connecting section is D, and the angle between the tangent line at point A on the inner wall surface of the guide section and the horizontal direction is Z, satisfying: Z = θ + [a (90° - θ) / L]; Wherein, 0≤a≤L, L≤0.4D, a is the vertical distance between point A and the end point of the guide section close to the side panel, and L is the vertical distance between the exit section and the end point of the guide section close to the side panel.

6. The heat dissipation module according to claim 1, characterized in that: The vertical distance between the end point of the outlet section away from the guide section and the end connection of the guide section and the side panel is H, and the vertical distance between the end point of the outlet section away from the guide section and the guide section is h, and h is less than 0.2H.

7. The heat dissipation module according to claim 1, characterized in that: The heat dissipation module also includes a heat dissipation base plate and a plurality of heat dissipation fins. The plurality of heat dissipation fins are arranged at intervals on the heat dissipation base plate, and a heat dissipation gap is formed between two adjacent heat dissipation fins. The heat dissipation base plate is connected to the volute, and the heat dissipation gap is connected to the air outlet.

8. The heat dissipation module according to claim 7, characterized in that: The inner wall surface of the outlet section is parallel to the surface of the heat dissipation fin facing the heat dissipation gap.

9. The heat dissipation module according to claim 8, characterized in that: The inner wall surface of the connecting section is gradually expanded in a direction away from the wind wheel.

10. An electronic device, characterized in that: It comprises a heat dissipation module as described in any one of claims 1 to 9 above.

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