Radiator and electronic equipment

Abstract

The embodiment of the utility model relates to the technical field of heat dissipation, and discloses a radiator which comprises a first shell 1, a heat dissipation fan 2, a motor 3 and a second shell 4, and the heat dissipation fan 2 and the motor 3 are arranged in a containing cavity formed by the first shell 1 and the second shell 4; the cavity wall of the containing cavity is matched with the periphery of the cooling fan 2 in a covering mode. The cooling fan 2 comprises a hub 20 and fan blades 21 surrounding the hub 20, a mounting groove 201 is formed in the hub 20, and the output end 30 of the motor 3 is mounted in the mounting groove 201; and the inner side of the mounting groove 201 is matched with the outer side of the output end 30 in a covering manner. The whole radiator is only provided with the first shell 1 and the second shell 4, so that a motor shell and a fan shell are reduced, the cost is reduced, and the size and the weight of a product are reduced.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology, and in particular to a heat sink and electronic device. Background Technology

[0002] Heat dissipation is a crucial consideration for electronic devices, directly impacting their performance and lifespan. Inadequate heat dissipation can lead to reduced efficiency, shortened lifespan, and even the burnout of internal components. Current electronic devices utilize heat sinks consisting of a fan and a motor with housings. The motor drives the fan to dissipate heat from the heat sink. This design, with its additional motor and fan housings, increases the product's size and weight, and consequently reduces the fan blade size, thus lowering cooling efficiency. Utility Model Content

[0003] This utility model provides a heat sink and electronic device to solve the problem that the existing heat sink structure has an additional motor housing and a fan housing, which increases the size and weight of the product and correspondingly reduces the size of the fan blades, thus reducing the heat dissipation efficiency.

[0004] The objective of this utility model embodiment is achieved through the following technical solution:

[0005] To solve the above-mentioned technical problems, in a first aspect, the present invention provides a radiator, comprising: a first outer shell 1, a cooling fan 2, a motor 3, and a second outer shell 4, wherein the cooling fan 2 and the motor 3 are disposed within a receiving cavity formed by the first outer shell 1 and the second outer shell 4; and the cavity wall of the receiving cavity is fitted to the outer periphery of the cooling fan 2.

[0006] The cooling fan 2 includes a hub 20 and fan blades 21 surrounding the hub 20. The hub 20 is provided with a mounting groove 201, and the output end 30 of the motor 3 is installed in the mounting groove 201; and the inner side of the mounting groove 201 cooperates with the outer side of the output end 30.

[0007] Furthermore, the first outer casing 1 includes a first body 10, and a volute-shaped first receiving groove 101 is provided inside the first body 10. The mounting piece 31 of the motor 3 is fixed in the first receiving groove 101 so that the assembly consisting of the cooling fan 2 and the motor 3 is fixed in the first receiving groove 101.

[0008] The second housing 4 includes a second body 40, which encloses a portion of the first receiving groove 101 to form the receiving cavity.

[0009] Furthermore, the surface of the first body 10 is provided with a plurality of first heat dissipation fins 102.

[0010] Furthermore, the radiator also includes a flow guide baffle 5, which includes a flow guide portion 50 and a blocking portion 51 connected at a preset angle. The blocking portion 51 is provided with a ventilation hole 510. The blocking portion 51 is disposed adjacent to the cooling fan 2, and the cooling fan 2 is aligned with the ventilation hole 510. The diameter of the ventilation hole 510 is less than or equal to the diameter of the cooling fan 2.

[0011] The second body 40 is provided with a second receiving groove 401. The side wall of the second receiving groove 401 is bent outward to form a bearing plate 402. The side wall of the second receiving groove 401 is attached to the side wall of the first receiving groove 101.

[0012] The blocking part 51 is fixed in the second receiving groove 401, the flow guiding part 50 is located on the support plate 402, and there is a gap between the flow guiding part 50 and the support plate 402 to form an air inlet 6; there is a gap between the flow guiding part 50 and one of the groove sidewalls of the first receiving groove 101 to form an air outlet 7.

[0013] The ventilation hole 510 is used to allow air to flow from the air inlet 6 to the cooling fan 2, and also to prevent air from flowing back from the cooling fan 2 to the air inlet 6.

[0014] Furthermore, the surface of the second body 40 is provided with a plurality of second heat dissipation fins 403.

[0015] Furthermore, the bottom surface of the second receiving groove 401 includes a heat dissipation bottom surface 4011 and a fixed bottom surface 4012. There is a height difference between the fixed bottom surface 4012 and the heat dissipation bottom surface 4011. The distance between the fixed bottom surface 4012 and the blocking part 51 is smaller than the distance between the heat dissipation bottom surface 4011 and the blocking part 51. The blocking part 51 is fixed on the fixed bottom surface 4012. A plurality of third heat dissipation fins 404 are provided on the heat dissipation bottom surface 4011.

[0016] Furthermore, from the edge of the heat dissipation base 4011 towards the center line of the heat dissipation base 4011, the length of the plurality of third heat dissipation fins 404 gradually increases according to a preset gradient.

[0017] Furthermore, the first outer shell 1 is provided with a first positioning structure 11, and the second outer shell 4 is provided with a second positioning structure 41. The first positioning structure 11 and the second positioning structure 41 are coupled to each other to position the first outer shell 1 and the second outer shell 4.

[0018] Furthermore, the output end 30 includes a drive shaft 301 and a drive seat 302. The drive shaft 301 is installed in the mounting groove 201 with an interference fit, and the outer side of the drive seat 302 forms an interference fit with the inner side of the mounting groove 201.

[0019] To address the aforementioned technical problems, in a second aspect, embodiments of the present invention provide an electronic device, comprising: a heat sink as described in the first aspect, wherein the heat sink is used to dissipate heat from heat-generating components within the electronic device.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: the hub 20 of the cooling fan 2 is reused as the housing of the motor 3, and the motor 3 and the cooling fan 2 are combined into a housing-less fan; the first housing 1 and the second housing 4 are reused as the housing of the cooling fan 2, and the entire radiator only has the first housing 1 and the second housing 4, reducing the motor housing and fan housing, which not only reduces costs but also reduces the size and weight of the product. At the same time, since the fan housing is not required, the size of the fan blades 21 can be appropriately increased without changing the volume of the radiator, thereby increasing the airflow per unit area and improving the heat dissipation efficiency of the radiator.

[0021] Furthermore, the surface of the first body 10 is provided with a plurality of first heat dissipation fins 102, and the surface of the second body 40 is provided with a plurality of second heat dissipation fins 403, so as to improve the heat dissipation effect.

[0022] Furthermore, the lengths of the third heat dissipation fins 404 disposed in the second receiving groove 401 are not uniform. The curves formed by the smooth transition of the tail ends of the third heat dissipation fins 404 of different lengths match the contour of the ventilation hole 510 to balance the airflow at each position. Attached Figure Description

[0023] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements / modules and steps with the same reference numerals in the drawings are represented as similar elements / modules and steps. Unless otherwise stated, the figures in the drawings do not constitute a limitation on scale.

[0024] Figure 1 This is a schematic diagram of the overall structure of a radiator provided in an embodiment of the present invention;

[0025] Figure 2 This is an exploded structural diagram of a radiator provided in an embodiment of this utility model;

[0026] Figure 3 This is a cross-sectional structural diagram of a radiator provided in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of a cooling fan provided in an embodiment of this utility model;

[0028] Figure 5 This is an exploded view of the cooling fan and motor provided in the embodiment of this utility model from a first perspective;

[0029] Figure 6 This is an exploded view of the cooling fan and motor provided in the embodiment of this utility model from a second perspective;

[0030] Figure 7 This is a schematic diagram of the overall structure of another heat sink provided in this embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of a first outer shell provided in an embodiment of the present utility model;

[0032] Figure 9 This is a schematic diagram of another first outer shell provided in an embodiment of the present utility model;

[0033] Figure 10 This is a schematic diagram of the structure of a second outer shell provided in an embodiment of the present utility model;

[0034] Figure 11 This is a schematic diagram of the structure of a flow guide baffle provided in an embodiment of the present utility model;

[0035] Figure 12 This is a schematic diagram of another second outer shell provided in an embodiment of the present invention. Detailed Implementation

[0036] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0038] It should be noted that, unless there is a conflict, the various features in the embodiments of this utility model can be combined with each other, all of which are within the protection scope of this utility model. Furthermore, although functional modules are divided in the device schematic diagram, in some cases, the module division may differ from that in the device.

[0039] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. Furthermore, the technical features involved in the various embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] Current electronic devices use heat sinks that consist of a fan and a motor, both with housings. The motor drives the fan to dissipate heat from the heat sink. This design adds an extra housing for both the motor and the fan, increasing the product's size and weight. For electronic products that are already relatively small, it's necessary to reduce the size of other components to make room for the motor and fan housings. For example, reducing the fan blade size can accommodate these housings, but this reduces heat dissipation efficiency, resulting in poor heat dissipation performance and impacting the overall product performance.

[0042] To address the aforementioned problems, this embodiment provides a radiator comprising a first housing, a cooling fan, a motor, and a second housing. The cooling fan and the motor are disposed within a cavity formed by the first housing and the second housing. The cavity wall of the cavity is fitted to the outer periphery of the cooling fan, and the first housing and the second housing are reused as the housing of the cooling fan. The cooling fan includes a hub and fan blades surrounding the hub. A mounting groove is provided on the hub, and the output end of the motor is mounted in the mounting groove. The inner side of the mounting groove is fitted to the outer side of the output end, and the hub is reused as the housing of the motor.

[0043] In this embodiment, the hub of the cooling fan is reused as the housing of the motor, combining the motor and the cooling fan into a housing-less fan. The first and second housings are reused as the housing of the cooling fan, resulting in a radiator consisting only of the first and second housings. This reduces the need for a motor housing and a fan housing, lowering costs and reducing the product's size and weight. Furthermore, since a fan housing is unnecessary, the fan blade size can be appropriately increased without altering the radiator's overall volume, thereby increasing the airflow per unit area and improving the radiator's cooling efficiency.

[0044] Furthermore, heat dissipation fins are provided on the first and second outer shells, and heat dissipation can be carried out through the heat dissipation fins, which can further improve the heat dissipation efficiency.

[0045] The heat sink of this embodiment will be described below with reference to the accompanying drawings.

[0046] To reduce the weight and size of the radiator, this embodiment provides a radiator, see reference. Figures 1-3 The radiator includes a first outer shell 1, a cooling fan 2, a motor 3, and a second outer shell 4. The cooling fan 2 and the motor 3 are disposed in a cavity formed by the first outer shell 1 and the second outer shell 4. The cavity wall of the cavity is fitted to the outer periphery of the cooling fan 2. The first outer shell 1 and the second outer shell 4 are reused as the outer shell of the cooling fan 2, eliminating the need for a separate fan shell, which not only reduces costs but also reduces the size and weight of the product.

[0047] The cooling fan 2 is a fan without a casing, and the motor 3 is a motor without a casing.

[0048] In one embodiment, see Figure 4 and Figure 5 The cooling fan 2 includes a hub 20 and fan blades 21 surrounding the hub 20. The hub 20 is provided with a mounting groove 201, and the output end 30 of the motor 3 is installed in the mounting groove 201. The inner side of the mounting groove 201 cooperates with the outer side of the output end 30. The hub 20 is reused as the housing of the motor 3, eliminating the need for a motor housing, which not only reduces costs but also reduces the size and weight of the product.

[0049] Continue reading Figure 3 and Figure 5 The output end 30 includes a drive shaft 301 and a drive base 302. The drive shaft 301 is mounted in the mounting groove 201 with an interference fit, and the outer side of the drive base 302 is interference-fitted with the inner side of the mounting groove 201. The motor 3 drives the drive shaft 301 to rotate, thereby rotating the mounting groove 201 and causing the cooling fan 2 to rotate. The drive base 302 can be a magnet, which rotates with the drive shaft 301 and surrounds a magnetic circuit 303 with a coil, which remains stationary.

[0050] The hub 20 is cylindrical, and the fan blade 21 is disposed on the outside of the hub 20. The hub 20 has a cylindrical mounting groove 201. Most of the structure of the motor 3 is housed in the mounting groove 201, and the output end 30 of the motor 3 is fixedly connected to the mounting groove 201 by an interference fit. When the motor 3 is working, it drives the hub 20 to rotate through the output end 30, which in turn drives the fan blade 21 to rotate for heat dissipation.

[0051] The cooling fan 2 is an axial fan. When the cooling fan 2 is working, the fan blades 21 push the air to flow in the same direction as the axis.

[0052] In one embodiment, see Figure 3 and Figure 6 The motor 3 also includes a mounting plate 31, which is located outside the mounting groove 201 and is fixed to the first housing 1 to fix the motor 3 to the first housing 1.

[0053] In this embodiment, the hub 20 of the cooling fan 2 is reused as the housing of the motor 3, and the motor 3 and the cooling fan 2 are combined into a housing-less fan. The first housing 1 and the second housing 4 are reused as the housing of the cooling fan 2. The entire radiator consists only of the first housing 1 and the second housing 4, reducing the motor housing and fan housing, which not only lowers the cost but also reduces the size and weight of the product. At the same time, since the fan housing is not needed, the size of the fan blades 21 can be appropriately increased without changing the volume of the radiator, thereby increasing the airflow per unit area and improving the heat dissipation efficiency of the radiator.

[0054] In one embodiment, see Figure 2 and Figure 7 The heat sink also includes a baffle plate 5. There is a gap between the baffle plate 5 and the second outer shell 4 to form an air inlet 6. There is a gap between the baffle plate 5 and the first outer shell 1 to form an air outlet 7. This allows air to enter the heat sink from the air inlet 6. The rotation of the fan blades 21 accelerates the air flow and improves the heat dissipation efficiency. The air that has undergone heat exchange flows out from the air outlet 7 and blows towards the heat-generating device, thereby dissipating heat from the heat-generating device.

[0055] In one embodiment, see Figure 8 The first outer casing 1 includes a first body 10, and a first receiving groove 101 in the shape of a volute is provided inside the first body 10. The mounting plate 31 of the motor 3 (such as...) Figure 6 (As shown) is fixed within the first receiving groove 101, so that the assembly consisting of the cooling fan 2 and the motor 3 is fixed within the first receiving groove 101; see reference Figure 10The second outer shell 4 includes a second body 40, which encloses a portion of the first receiving groove 101 to form the receiving cavity.

[0056] In one embodiment, "volute-like" refers to a shape similar to a snail's shell. The first receiving groove 101 includes a circular groove (not shown) and an elongated groove (not shown). The depth of the circular groove is close to the height of the assembly formed by the cooling fan 2 and the motor 3. The cooling fan 2 is disposed in the circular groove. The elongated groove is disposed near the edge of the first outer shell 1. The elongated groove is used to form an air outlet 7 with the opening of the second outer shell 4.

[0057] In one embodiment, the first housing 1 and the second housing 4 may be made of metal material to dissipate heat through the housing.

[0058] In one embodiment, such as Figure 6 As shown, the mounting plate 31 is provided with a threaded through hole (not shown in the figure), such as Figure 8 As shown, the bottom surface of the first receiving groove 101 is provided with a threaded blind hole (not shown in the figure). The screw passes through the threaded through hole and the threaded blind hole in sequence to fix the mounting piece 31 in the first receiving groove 101. The specific structure of the motor 3 is not specifically limited in this embodiment. This embodiment mainly describes the positional and connection relationships between the motor 3 and other structures to ensure that the motor 3 can be fixed on the corresponding structure, and that the motor 3 can be protected by the hub 20. Simultaneously, when the motor 3 is working, it can drive the hub 20 to rotate.

[0059] In one embodiment, combined Figure 8 and Figure 10 Both the first outer shell 1 and the second outer shell 4 are provided with at least one threaded hole 8, and the screws are sequentially threaded to the threaded hole 8 on the first outer shell 1 and the threaded hole 8 on the second outer shell 4.

[0060] In one embodiment, to further improve heat dissipation efficiency, such as Figure 8 and Figure 9As shown, the surface of the first body 10 is provided with a plurality of first heat dissipation fins 102. These first heat dissipation fins 102 can be provided on the side surfaces and parts of the surface of the first body 10. The extension directions of the multiple first heat dissipation fins 102 can be different; for example, some of the first heat dissipation fins 102 extend laterally, while others extend longitudinally. The spacing between the first heat dissipation fins 102, their length, width, and other parameters can be designed according to actual heat dissipation requirements and are not specifically limited in this embodiment. Furthermore, where the structure and size permit, as many first heat dissipation fins 102 as possible can be provided.

[0061] In one embodiment, such as Figure 11 As shown, the radiator further includes a flow guide baffle 5, which comprises a flow guide portion 50 and a blocking portion 51 connected at a preset angle. The blocking portion 51 has a ventilation hole 510. The blocking portion 51 is disposed adjacent to the cooling fan 2, and the cooling fan 2 is aligned with the ventilation hole 510. The diameter of the ventilation hole 510 is less than or equal to the diameter of the cooling fan 2. The diameter of the circle corresponding to the circumcircle of the cooling fan 2 is the diameter of the cooling fan 2.

[0062] In one embodiment, the blocking part 51 is fitted to the cooling fan 2, and the cooling fan 2 is aligned with the ventilation hole 510. In another embodiment, the blocking part 51 and the cooling fan 2 are arranged opposite each other at a preset interval, and the cooling fan 2 is aligned with the ventilation hole 510. The preset interval is relatively small, such as 3mm or 5mm, and the specific value can be determined according to the actual situation.

[0063] In one embodiment, the vent 510 is used to allow air to flow from the air inlet 6 to the cooling fan 2 for heat dissipation, and also to prevent air from flowing back from the cooling fan 2 to the air inlet 6 to avoid airflow turbulence.

[0064] like Figure 10 As shown, a second receiving groove 401 is provided inside the second body 40. A support plate 402 is formed by bending outward from the groove side wall of the second receiving groove 401. Specifically, one end of the groove side wall is bent outward to form the support plate 402, and the other end of the groove side wall is also bent outward to form the support plate 402. That is, the two ends of the groove side wall of the second receiving groove 401 are not connected together to form a complete groove side wall. The groove side wall of the second receiving groove 401 is attached to the groove side wall of the first receiving groove 101.

[0065] In this embodiment, the second receiving groove 401 encloses a portion of the first receiving groove 101 (in conjunction with...). Figure 8The circular groove is closed, so that the cooling fan 2 is located in a relatively enclosed space to avoid airflow turbulence; the elongated groove is not closed to facilitate the formation of an air outlet 7. The blocking part 51 is fixed in the second receiving groove 401, the guide part 50 is located on the support plate 402, and there is a gap between the guide part 50 and the support plate 402 to form an air inlet 6; there is a gap between the guide part 50 and one of the groove sidewalls of the first receiving groove 101 to form an air outlet 7.

[0066] In one embodiment, the preset angle can be between 80 and 100 degrees, depending on the actual situation. The guide portion 50 and the blocking portion 51 are smoothly connected. The guide portion 50 and the blocking portion 51 can be integrally formed or have separate structures. In this embodiment, no specific limitation is made, and it can be determined according to the actual situation.

[0067] In one embodiment, the ventilation hole 510 can be a circular hole, and the diameter of the ventilation hole 510 is close to the diameter of the circumcircle of the cooling fan 2. For example, the diameter of the ventilation hole 510 is equal to the diameter of the circumcircle of the cooling fan 2. In one embodiment, the projection of the center of the circumcircle of the cooling fan 2 onto the blocking portion 51 overlaps with the center of the ventilation hole 510.

[0068] Continue reading Figure 12 In one embodiment, the support plate 402 is formed by bending the side walls of the second receiving groove 401 outwards. To avoid airflow turbulence caused by side air intake, the support plate 402 is further bent upwards to form a side plate 4021, and the side plate 4021 is then bent inwards to form a first limiting part 4022. The guide part 50 is provided with the second limiting part 501 (e.g., Figure 11 As shown, the first limiting part 4022 is located above the second limiting part 501 and is in contact with the second limiting part 501 to limit the flow guide baffle 5 from above.

[0069] In one embodiment, to further improve heat dissipation efficiency, a plurality of second heat dissipation fins 403 are provided on the surface of the second body 40. These second heat dissipation fins 403 can be provided on the sides and parts of the surface of the second body 40, and the extension directions of the multiple second heat dissipation fins 403 can be different. For example, some of the second heat dissipation fins 403 extend laterally, while others extend longitudinally. The spacing between the second heat dissipation fins 403, their length, width, and other parameters can be designed according to actual heat dissipation requirements and are not specifically limited in this embodiment. Furthermore, where the structure and size allow, as many second heat dissipation fins 403 as possible can be provided.

[0070] In one embodiment, see further. Figure 12 The bottom surface of the second receiving groove 401 includes a heat dissipation bottom surface 4011 and a fixed bottom surface 4012. There is a height difference between the fixed bottom surface 4012 and the heat dissipation bottom surface 4011. The distance between the fixed bottom surface 4012 and the blocking part 51 is smaller than the distance between the heat dissipation bottom surface 4011 and the blocking part 51. The blocking part 51 is fixed on the fixed bottom surface 4012. A plurality of third heat dissipation fins 404 are provided on the heat dissipation bottom surface 4011.

[0071] In one embodiment, both the blocking part 51 and the fixed bottom surface 4012 are provided with threaded holes (not shown in the figure), and screws are threadedly connected to the corresponding threaded holes to fix the blocking part 51 on the fixed bottom surface 4012.

[0072] In one embodiment, see further. Figure 12 The lengths of the plurality of third heat dissipation fins 404 are not uniform. Specifically, from the edge of the heat dissipation base 4011 towards its centerline, the lengths of the plurality of third heat dissipation fins 404 gradually increase according to a preset gradient. The preset gradient is determined depending on the situation and is not specifically limited here. For example, the preset gradient may be 1mm, 5mm, 10mm, or other values.

[0073] In one embodiment, the length of each of the third heat dissipation fins 404 is not the same; or the length of the multiple third heat dissipation fins 404 is divided into 3 levels, each level including at least 2 third heat dissipation fins 404, the shortest third heat dissipation fin 404 is close to the edge of the heat dissipation bottom surface 4011, and the longest third heat dissipation fin 404 is close to the center line of the heat dissipation bottom surface 4011.

[0074] In one embodiment, the curve formed by the smooth transition between the tail ends of the third heat dissipation fins 404 of different lengths matches the contour of the ventilation hole 510 to balance the airflow at various locations. For example, the curve formed by the smooth transition between the tail ends of the third heat dissipation fins 404 of different lengths is a semicircle, and the contour of the ventilation hole 510 is a circle; the two match to balance the airflow at various locations.

[0075] In one embodiment, combined Figure 8 The first outer shell 1 is provided with a first positioning structure 11, combined with Figure 12 The second outer shell 4 is provided with a second positioning structure 41, and the first positioning structure 11 and the second positioning structure 41 are coupled to each other to position the first outer shell 1 and the second outer shell 4.

[0076] In one embodiment, the first positioning structure 11 is a positioning post and the second positioning structure 41 is a positioning hole; or, the first positioning structure 11 is a positioning hole and the second positioning structure 41 is a positioning post; during installation, the positioning post is inserted into the positioning hole to achieve positioning.

[0077] Based on the heat sink of the foregoing embodiments, this embodiment also provides an electronic device, including: the heat sink of the foregoing embodiments, the heat sink being used to dissipate heat from heat-generating components within the electronic device.

[0078] In one embodiment, the electronic device is a projector, which includes a lens, a display module, and an optical engine housing. The display module is inserted into a limiting slot in the optical engine housing, and a heat sink is installed to dissipate heat from the display module and other heat-generating components.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail; although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A radiator, characterized in that, include: The system comprises a first outer shell (1), a cooling fan (2), a motor (3), and a second outer shell (4). The cooling fan (2) and the motor (3) are disposed within a cavity formed by the first outer shell (1) and the second outer shell (4). The cavity wall of the cavity is fitted to the outer periphery of the cooling fan (2). The cooling fan (2) includes a hub (20) and fan blades (21) surrounding the hub (20). The hub (20) is provided with a mounting groove (201). The output end (30) of the motor (3) is installed in the mounting groove (201). The inner side of the mounting groove (201) and the outer side of the output end (30) are fitted together.

2. The radiator according to claim 1, characterized in that, The first outer shell (1) includes a first body (10), and a first receiving groove (101) in the shape of a volute is provided in the first body (10). The mounting plate (31) of the motor (3) is fixed in the first receiving groove (101) so that the assembly consisting of the cooling fan (2) and the motor (3) is fixed in the first receiving groove (101). The second housing (4) includes a second body (40) that encloses a portion of the first receiving groove (101) to form the receiving cavity.

3. The radiator according to claim 2, characterized in that, The surface of the first body (10) is provided with a plurality of first heat dissipation fins (102).

4. The radiator according to claim 2, characterized in that, The surface of the second body (40) is provided with a plurality of second heat dissipation fins (403).

5. The radiator according to claim 2, characterized in that, The radiator also includes a flow guide baffle (5), which includes a flow guide part (50) and a blocking part (51) connected at a preset angle. The blocking part (51) is provided with a ventilation hole (510). The blocking part (51) is located adjacent to the cooling fan (2), and the cooling fan (2) is aligned with the ventilation hole (510). The diameter of the ventilation hole (510) is less than or equal to the diameter of the cooling fan (2). The second body (40) is provided with a second receiving groove (401), the groove sidewall of the second receiving groove (401) is bent outward to form a bearing plate (402), and the groove sidewall of the second receiving groove (401) is attached to the groove sidewall of the first receiving groove (101). The blocking part (51) is fixed in the second receiving groove (401), the flow guiding part (50) is located on the support plate (402), and there is a gap between the flow guiding part (50) and the support plate (402) to form an air inlet (6); there is a gap between the flow guiding part (50) and one of the groove sidewalls of the first receiving groove (101) to form an air outlet (7); The ventilation hole (510) is used to allow air to flow from the air inlet (6) to the cooling fan (2) and to prevent air from flowing back from the cooling fan (2) to the air inlet (6).

6. The radiator according to claim 5, characterized in that, The bottom surface of the second receiving groove (401) includes a heat dissipation bottom surface (4011) and a fixed bottom surface (4012). There is a height difference between the fixed bottom surface (4012) and the heat dissipation bottom surface (4011). The distance between the fixed bottom surface (4012) and the blocking part (51) is smaller than the distance between the heat dissipation bottom surface (4011) and the blocking part (51). The blocking part (51) is fixed on the fixed bottom surface (4012). A plurality of third heat dissipation fins (404) are provided on the heat dissipation bottom surface (4011).

7. The radiator according to claim 6, characterized in that, From the edge of the heat dissipation base (4011) toward the center line of the heat dissipation base (4011), the length of the plurality of third heat dissipation fins (404) gradually increases according to a preset gradient.

8. The radiator according to any one of claims 1-7, characterized in that, The first outer shell (1) is provided with a first positioning structure (11), and the second outer shell (4) is provided with a second positioning structure (41). The first positioning structure (11) and the second positioning structure (41) are coupled to each other to position the first outer shell (1) and the second outer shell (4).

9. The radiator according to any one of claims 1-7, characterized in that, The output end (30) includes a drive shaft (301) and a drive seat (302). The drive shaft (301) is installed in the mounting groove (201) with an interference fit. The outer side of the drive seat (302) and the inner side of the mounting groove (201) form an interference fit.

10. An electronic device, characterized in that, include: The heat sink according to any one of claims 1-9 is used to dissipate heat from heat-generating components within the electronic device.

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