Air guide structure and aging test machine

Abstract

The utility model provides a kind of air guide structure and ageing test machine, it is related to semiconductor test technical field, the air guide structure provided by the utility model includes cover shell, cover shell has lower opening, cover shell includes air inlet section and close section;Air inlet section has the first air inlet being set to the air source and the first air outlet being communicated with close section;Close section is configured to cover and is set on the outside of heating device, and the distance between the surface of close section away from lower opening and lower opening is less than or equal to the distance between the one end of first air outlet away from lower opening and lower opening.The air guide structure provided by the utility model not only improves the utilization efficiency of cooling airflow, but also can effectively concentrate cooling airflow to heating device, significantly improve the heat dissipation performance of power board.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor testing technology, and in particular to an air guide structure and an aging test machine. Background Technology

[0002] In existing aging test chambers, the entire machine consists of two chambers, left and right, arranged in an array (not mirrored), with a fan positioned between the two chambers to supply air to each chamber. For example... Figure 1 The diagram shows a three-dimensional structural schematic of the power board in an existing aging test machine. The power board consists of a main power board 1 and a power mounting plate 2 that is higher than the main power board. The main heat-generating component is the power brick 11 on the main power board, which is designed with a heat dissipation structure for heat dissipation. Due to the cavity array arrangement, the airflow direction of the power board differs when it is located in different cavities. Figure 1 As shown, when the right side of the power board is the air intake side and the left side is the air exhaust side, the power brick 11 located on the power motherboard 1 along the direction of the incoming air will be blocked by the power mounting plate 2, reducing the amount of air received and resulting in poor heat dissipation of the power brick 11. Utility Model Content

[0003] The purpose of this invention is to provide an airflow guide structure and aging test machine, which not only improves the utilization efficiency of cooling airflow, but also effectively concentrates the cooling airflow to the heat-generating device, significantly improving the heat dissipation performance of the power board.

[0004] To achieve the above objectives, this utility model provides the following technical solution: In a first aspect, the present invention provides an air guiding structure, including a cover, the cover having a lower opening, and the cover including an air inlet section and a closing section; The air inlet section has a first air inlet facing the air source and a first air outlet communicating with the closing section. The constriction section is configured to cover the outside of the heating device, and the distance between the surface of the constriction section away from the lower opening and the lower opening is less than or equal to the distance between the end of the first air outlet away from the lower opening and the lower opening.

[0005] In an optional embodiment, the distance between the surface of the air inlet section away from the lower opening and the lower opening gradually decreases along the direction from the first air inlet to the first air outlet.

[0006] In an optional embodiment, the housing further includes a transition section communicating between the air inlet section and the closing section, wherein the surface of the transition section away from the lower opening is parallel to the lower opening.

[0007] In an optional embodiment, the transition section includes a stepped surface perpendicular to the lower opening, the stepped surface being disposed near the closing section, and one end of the stepped surface near the lower opening being connected to the closing section.

[0008] In an optional embodiment, the closing section includes a first closing portion, the surface of which, away from the lower opening, is parallel to the lower opening.

[0009] In an optional embodiment, the constriction section includes a second constriction portion, the surface of the second constriction portion away from the lower opening gradually decreasing in distance from the lower opening along the direction from the first air inlet to the first air outlet.

[0010] In an optional embodiment, the air guiding structure further includes an air guiding plate, which is disposed inside the housing and divides the space inside the housing into a first cavity and a second cavity. The first cavity and the second cavity are distributed vertically along a direction perpendicular to the lower opening, and a confluence port is formed between the end of the air guiding plate away from the air source and the constriction section.

[0011] In an optional embodiment, the air guide plate includes a first air guide portion and a second air guide portion. The first air guide portion is parallel to the lower opening. One end of the second air guide portion is connected to the first air guide portion, and the other end extends to the bottom of the converging section and forms the confluence port with the converging section. The distance between the second air guide portion and the lower opening gradually decreases in the direction away from the first air guide portion.

[0012] In an optional embodiment, the cover further includes an air outlet section having a second air inlet disposed toward the constriction section and a second air outlet disposed away from the constriction section, wherein the distance between the surface of the air outlet section away from the lower opening and the lower opening gradually increases along the direction from the second air inlet to the second air outlet.

[0013] Secondly, this utility model provides an aging test machine, including an air source, a power board, and an air guide structure as described in any of the foregoing embodiments. The cover is disposed on the power board through the lower opening, the power board is provided with the heating device, the constricted section is located outside the heating device, and the first air inlet is disposed close to the air source.

[0014] The air guiding structure and aging test function provided by this utility model can produce the following beneficial effects: Compared with the prior art, the air guide structure provided by the first aspect of this utility model not only improves the utilization efficiency of cooling airflow by setting an air inlet section and an outlet section, but also effectively concentrates the cooling airflow to the heat-generating device, thereby significantly improving the overall heat dissipation performance. It has the advantages of simple structure and low cost.

[0015] The aging test machine provided in the second aspect of this utility model has the air guide structure provided in the first aspect of this utility model, and thus has all the beneficial effects of the air guide structure provided in the first aspect of this utility model. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of the power board in an existing aging test machine; Figure 2 A three-dimensional structural diagram of the air guide structure provided in Embodiment 1 of this utility model when used in conjunction with a power board; Figure 3 A top view of the air guide structure provided in Embodiment 1 of this utility model when used in conjunction with a power board; Figure 4 for Figure 3 AA section view; Figure 5 This is Embodiment 2 of the present utility model. Figure 3 AA sectional view.

[0018] Icons: 1-Power supply motherboard; 11-Power supply brick; 2-Power supply cover; 3-Cover; 31-Lower opening; 32-Air inlet section; 321-First air inlet; 322-First air outlet; 33-Constriction section; 331-First constriction section; 332-Second constriction section; 34-Transition section; 341-Stepped surface; 35-Air outlet section; 351-Second air inlet; 352-Second air outlet; 4-Heating element; 5-Air guide plate; 51-First air guide section; 52-Second air guide section; 6-First cavity; 7-Second cavity; 8-Combiner port; 9-Power supply board. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0023] The first aspect of this utility model provides an air guiding structure, such as Figures 2 to 4 As shown, it includes a housing 3, which has a lower opening 31, and includes an air inlet section 32 and a closing section 33. The air inlet section 32 has a first air inlet 321 facing the air source and a first air outlet 322 connected to the closing section 33; The constriction section 33 is configured to cover the outside of the heating device 4, and the distance between the surface of the constriction section 33 away from the lower opening 31 and the lower opening 31 is less than or equal to the distance between the end of the first air outlet 322 away from the lower opening 31 and the lower opening 31.

[0024] In the air guiding structure provided by this utility model, such as Figure 2 As shown, the cooling airflow from the air source enters the converging section 33 through the air inlet section 32. The air inlet section 32 and the converging section 33 prevent the cooling airflow from dissipating, ensuring a sufficiently large airflow at the heat-generating device 4 and improving the heat dissipation effect of the heat-generating device 4. Since the distance between the surface of the converging section 33 away from the lower opening 31 and the lower opening 31 can be smaller than the distance between the end of the first air outlet 322 away from the lower opening 31 and the lower opening 31, the converging section 33 can be closer to the lower opening 31 than the air inlet section 32, which is beneficial for concentrating the cooling airflow and guiding it to the heat-generating device 4, thereby improving the heat dissipation efficiency.

[0025] In alternative implementations, such as Figure 2 As shown, the distance between the surface of the air inlet section 32 away from the lower opening 31 and the lower opening 31 gradually decreases along the direction from the first air inlet 321 to the first air outlet 322.

[0026] The above-described implementation allows the first air inlet 321 to have a sufficiently large air intake area, receiving as much cooling airflow as possible from the air source, while converging the airflow towards the first air outlet 322. This not only increases the flow rate of the cooling airflow but also guides the cooling airflow at the top to be blown downwards at an angle, further improving the heat dissipation effect of the heat-generating device 4.

[0027] Specifically, the air inlet section 32 includes an air inlet top plate and air inlet side plates connected to both sides of the air inlet top plate. The air inlet side plates are perpendicular to the lower opening 31. The distance between the air inlet top plate and the lower opening 31 gradually decreases along the direction from the first air inlet 321 to the first air outlet 322.

[0028] The aforementioned air inlet section 32 forms a trumpet-shaped structure, which can converge the cooling airflow from the air source, increasing the intake volume and the velocity of the cooling airflow. In particular, the airflow near the top air inlet plate can flow downwards at an angle under the guidance of the top air inlet plate, which is conducive to the flow of the cooling airflow toward the heat-generating device 4.

[0029] Furthermore, in order to ensure that the casing 3 covers the entire power board and improve the air intake efficiency on the right side of the power board, the air intake section 32 can be extended towards the right edge of the power board, that is, the first air intake 321 is close to the right side of the power board. Of course, the transition section 34 can also be extended horizontally, so that the air intake section 32 is close to the right edge of the power board.

[0030] In alternative implementations, such as Figure 2 and Figure 4 As shown, the housing 3 also includes a transition section 34 that connects the air inlet section 32 and the closing section 33.

[0031] The aforementioned transition section 34 is positioned between the air inlet section 32 and the closing section 33 to achieve a smooth transition between the two. Figure 4 As shown, the surface of the transition section 34 away from the lower opening 31 can remain parallel to the lower opening 31, thus playing a transitional connection role in the structure, allowing the cooling airflow to flow smoothly to the closing section 33.

[0032] Specifically, the transition section 34 includes a transition top plate and transition side plates connected to both sides of the transition top plate. The transition side plates are perpendicular to the lower opening 31, and the surface of the transition top plate away from the lower opening 31 is parallel to the lower opening 31.

[0033] In an optional embodiment, the transition section 34 further includes an end plate connected to the transition top plate and the transition side plate. The end plate has a stepped surface 341 that is perpendicular to the lower opening 31. The stepped surface 341 is located near the closing section 33, and one end of the stepped surface 341 near the lower opening 31 is connected to the closing section 33.

[0034] The above-described embodiment can form a stepped transition in structure, increasing wind resistance, improving the residence time of cooling airflow in the transition section 34, reducing the flow cross-section of cooling airflow at the outlet end of the transition section 34, and thus increasing the speed at which cooling airflow enters the converging section 33. Simultaneously, due to the step surface 341, the distance between the surface of the converging section 33 away from the lower opening 31 and the lower opening 31 is less than the distance between the end of the first air outlet 322 away from the lower opening 31 and the lower opening 31. This distance difference is the length of the step surface 341 in the direction perpendicular to the lower opening 31, thereby bringing the overall cooling airflow closer to the heat-generating device 4 and improving the cooling effect of the heat-generating device 4.

[0035] In alternative implementations, such as Figure 4 As shown, the cover 3 also includes an air outlet section 35, which has a second air inlet 351 facing the constriction section 33 and a second air outlet 352 away from the constriction section 33. The distance between the surface of the air outlet section 35 away from the lower opening 31 and the lower opening 31 gradually increases along the direction from the second air inlet 351 to the second air outlet 352.

[0036] The above-described implementation results in the air outlet section 35 having a gradually expanding horn structure. On the one hand, this helps to reduce airflow speed, reduce wind resistance, and improve the smoothness of airflow, avoiding the impact of airflow swirl on heat dissipation efficiency. On the other hand, since both the air outlet section 35 and the air inlet section 32 have horn structures, it can ensure that the cooling airflow can concentrate and accelerate towards the heat-generating device 4 regardless of whether it enters the housing 3 from the air outlet section 35 or the air inlet section 32. This makes the above-described air guiding structure more versatile.

[0037] Specifically, the air outlet section 35 includes an air outlet top plate and air outlet side plates connected to both sides of the air outlet top plate. The air outlet side plates are perpendicular to the lower opening 31, and the distance between the air outlet top plate and the lower opening 31 gradually increases along the direction from the second air inlet 351 to the second air outlet 352.

[0038] It is understandable that when the air outlet section 35 is located close to the air source, the second air inlet 351 and the first air inlet 321 are used for air outlet, and the second air outlet 352 and the first air outlet 322 are used for air inlet.

[0039] Based on the above-described embodiments, and depending on the different structures of the closing section 33, the following two embodiments can be distinguished: Example 1: In this first embodiment, as Figure 2 and Figure 4 As shown, the closing section 33 includes a first closing portion 331, and the surface of the first closing portion 331 away from the lower opening 31 is parallel to the lower opening 31.

[0040] In Embodiment 1, the surface of the first constriction portion 331 that is away from the lower opening 31 is parallel to the lower opening 31, which can ensure that the airflow flows more evenly in the first constriction portion 331 and ensure that the heat dissipation effect of the heat-generating device 4 is basically the same at all points.

[0041] Specifically, the first closing portion 331 includes a first closing top plate and first closing side plates connected to both sides of the first closing top plate. The first closing side plates are perpendicular to the lower opening 31, and the first closing top plate is arranged parallel to the lower opening 31.

[0042] The aforementioned first constriction top plate can be connected to the end of the middle plate of the transition section 34 near the lower opening 31.

[0043] Example 2: In this second embodiment, as Figure 5 As shown, the closing section 33 includes a second closing portion 332. The distance between the surface of the second closing portion 332 away from the lower opening 31 and the lower opening 31 gradually decreases along the direction from the first air inlet 321 to the first air outlet 322.

[0044] In the second embodiment described above, the cross-sectional area of ​​the cooling airflow in the second constriction portion 332 along the flow direction of the cooling airflow continues to gradually decrease, which helps to further concentrate the cooling airflow and increase the flow rate of the cooling airflow when it passes through the heating device 4, thereby enhancing the cooling effect.

[0045] Specifically, the second closing portion 332 includes a second closing top plate and second closing side plates connected to both sides of the second closing top plate. The second closing side plates are perpendicular to the lower opening 31, and the second closing top plate is arranged parallel to the lower opening 31.

[0046] The aforementioned second closing top plate can be connected to the transition top plate in the transition section 34, in which case the transition section 34 may not have an end plate.

[0047] In this second embodiment, as Figure 5 As shown, optionally, the air guiding structure also includes an air guiding plate 5. The air guiding plate 5 is disposed inside the cover 3 and divides the space inside the cover 3 into a first cavity 6 and a second cavity 7. The first cavity 6 and the second cavity 7 are distributed vertically along the direction perpendicular to the lower opening 31. The end of the air guiding plate 5 away from the air source forms a confluence port 8 between it and the closing section 33.

[0048] Among them, such as Figure 5As shown, the first cavity 6 is located on the upper side of the air guide plate 5 and is used to receive the cooling airflow blown from the air source and located on the upper side; the second cavity 7 is located on the lower side of the air guide plate 5 and is used to receive the cooling airflow blown from the air source and located on the lower side. The air blown from the first cavity 6 and the second cavity 7 can be combined at the confluence port 8 and blown together towards the heating device 4.

[0049] The above embodiments can specifically accelerate the cooling airflow in the first cavity 6 and guide it to the heating device 4, while the cooling airflow in the lower second cavity 7 blows directly onto the heating device 4, making the cooling airflow in the casing 3 flow more orderly.

[0050] In this second embodiment, the air guide plate 5 includes a first air guide section 51 and a second air guide section 52. The first air guide section 51 is parallel to the lower opening 31. One end of the first air guide section 51 can extend to the first air inlet 321, and the other end is connected to the second air guide section 52, thereby guiding the cooling airflow from the first air inlet 321.

[0051] Specifically, the end of the second air guide 52 away from the first air guide 51 extends to the bottom of the constriction section 33 and forms a confluence port 8 with the constriction section 33. The distance between the second air guide 52 and the lower opening 31 gradually decreases in the direction away from the first air guide 51, so that the end of the second cavity 7 away from the first air inlet 321 forms a contraction guide structure, which helps to further concentrate the airflow, increase the flow rate, and guide the cooling airflow in the second cavity 7 obliquely downward to the heating device 4, thereby enhancing the cooling effect of the heating device 4.

[0052] In this second embodiment, as Figure 5 As shown, the distance between the second air guide section 52 and the surface of the constriction section 33 away from the lower opening 31 gradually decreases along the direction away from the first air guide section 51.

[0053] The above design further optimizes the airflow path, enabling the cooling airflow in the first cavity 6 to increase its velocity when passing through the second air guide 52. After being discharged from the confluence port 8, it quickly drives the cooling airflow in the second cavity 7 to the heat-generating device 4, thereby improving the heat dissipation efficiency of the heat-generating device 4.

[0054] The second aspect of this utility model provides an aging test machine. The aging test machine provided by the second aspect of this utility model includes an air source, a power board 9 and the above-mentioned air guiding structure. The cover 3 covers the power board 9 through the lower opening 31. The power board 9 is provided with a heating device 4. The constriction section 33 is located outside the heating device 4. The first air inlet 321 is set close to the air source.

[0055] In practical use, after the air source is activated, the cooling airflow is blown out from the air source and enters the first air inlet 321 of the air guide structure. It is then guided and accelerated in the air inlet section 32, flowing towards the first air outlet 322. After entering the converging section 33, the airflow is further concentrated and tilted downwards towards the heat-generating device 4, achieving efficient heat dissipation. This air guide structure design not only improves the utilization rate of the cooling airflow but also effectively enhances the overall heat dissipation performance of the aging test machine, thereby ensuring the stability and reliability of the power board 9 during long-term operation.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such 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. An air guiding structure, characterized in that, Includes a cover (3), the cover (3) having a lower opening (31), the cover (3) including an air inlet section (32) and a closing section (33); The air inlet section (32) has a first air inlet (321) facing the air source and a first air outlet (322) connected to the closing section (33). The constriction section (33) is configured to cover the outside of the heating device (4), and the distance between the surface of the constriction section (33) away from the lower opening (31) and the lower opening (31) is less than or equal to the distance between the end of the first air outlet (322) away from the lower opening (31) and the lower opening (31).

2. The air guiding structure according to claim 1, characterized in that, The distance between the surface of the air inlet section (32) away from the lower opening (31) and the lower opening (31) gradually decreases along the direction from the first air inlet (321) to the first air outlet (322).

3. The air guiding structure according to claim 1, characterized in that, The cover (3) also includes a transition section (34) connecting the air inlet section (32) and the closing section (33), the surface of the transition section (34) away from the lower opening (31) being parallel to the lower opening (31).

4. The air guiding structure according to claim 3, characterized in that, The transition section (34) includes a step surface (341) perpendicular to the lower opening (31), the step surface (341) is located near the closing section (33), and one end of the step surface (341) near the lower opening (31) is connected to the closing section (33).

5. The air guiding structure according to claim 1, characterized in that, The closing section (33) includes a first closing portion (331), the surface of the first closing portion (331) away from the lower opening (31) is parallel to the lower opening (31).

6. The air guiding structure according to claim 1, characterized in that, The closing section (33) includes a second closing portion (332), and the distance between the surface of the second closing portion (332) away from the lower opening (31) and the lower opening (31) gradually decreases along the direction from the first air inlet (321) to the first air outlet (322).

7. The air guiding structure according to claim 1, characterized in that, The air guiding structure also includes an air guide plate (5), which is disposed inside the cover (3) and divides the space inside the cover (3) into a first cavity (6) and a second cavity (7). The first cavity (6) and the second cavity (7) are distributed vertically along a direction perpendicular to the lower opening (31). The end of the air guide plate (5) away from the air source forms a confluence port (8) with the closing section (33).

8. The air guiding structure according to claim 7, characterized in that, The air guide plate (5) includes a first air guide section (51) and a second air guide section (52). The first air guide section (51) is parallel to the lower opening (31). One end of the second air guide section (52) is connected to the first air guide section (51), and the other end extends to the bottom of the constriction section (33) and forms the confluence port (8) with the constriction section (33). The distance between the second air guide section (52) and the lower opening (31) gradually decreases in the direction away from the first air guide section (51).

9. The air guiding structure according to any one of claims 1-8, characterized in that, The cover (3) further includes an air outlet section (35), which has a second air inlet (351) facing the closing section (33) and a second air outlet (352) away from the closing section (33). The distance between the surface of the air outlet section (35) away from the lower opening (31) and the lower opening (31) gradually increases along the direction from the second air inlet (351) to the second air outlet (352).

10. An aging test machine, characterized in that, Includes a wind source, a power board (9) and a wind guide structure as described in any one of claims 1-9. The cover (3) covers the power board (9) through the lower opening (31). The power board (9) is provided with the heating device (4). The constriction section (33) is located outside the heating device (4). The first air inlet (321) is located close to the wind source.

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