Vapor chamber air tightness detection device

Abstract

The utility model belongs to the technical field of vapor chamber detection, and particularly relates to a vapor chamber air tightness detection device. The device comprises a detection box, the detection box is a transparent detection box, and the detection box is filled with visible light floaters; the filter screen assembly is inserted into the detection box, and a containing cavity used for containing the temperature equalizing plate is formed in the filter screen assembly so as to isolate the light floating objects from the temperature equalizing plate; the air extractor is used for forming negative pressure in the vapor chamber; the detection frame is installed on the outer edge of the detection box and provided with a plane coordinate system correspondingly mapping the surface of the detection box. The device is used for solving the problem of long time consumption of vapor chamber airtightness detection. The uniform temperature plate is wrapped by the filter screen assembly and then placed in the detection box, negative pressure is pumped in the uniform temperature plate, and if leakage occurs, floating objects at a leakage point can be adsorbed on the surface of the filter screen assembly, so that the leakage point can be rapidly detected, meanwhile, the coordinate position of the leakage point is marked through the coordinate system on the detection frame, and the leakage point is rapidly determined.

Description

Technical Field

[0001] This utility model belongs to the field of temperature distribution plate testing technology, specifically relating to a temperature distribution plate airtightness testing device. Background Art

[0002] A vapor chamber is a highly efficient heat dissipation device. It typically consists of a sealed metal cavity. Its principle is to transfer heat through the evaporation and condensation of the liquid within the cavity, thereby achieving rapid temperature equalization.

[0003] After the vapor chamber is welded and formed, it is usually necessary to conduct a sealing test on the finished product. Currently, the following methods are commonly used for airtightness testing: vacuum pressure holding method, in which the vapor chamber is placed in a vacuum environment and its pressure change is observed over a certain period of time. If there is a leak in the vapor chamber, outside air will enter, causing the internal pressure to rise. This test method usually requires a long period of stillness and has low timeliness; visual medium detection method, which uses media such as colored penetrant or smoke to add these media into the vapor chamber. If there is a leak, it can be seen from the outside of the vapor chamber. Alternatively, the vapor chamber can be immersed in water and pressurized inside. If there is a leak, bubbles can be seen from the outside of the vapor chamber.

[0004] However, these detection methods are either time-consuming or require excessive contact between the medium and the heat spreader, making it difficult to clean up quickly after detection; at the same time, vacuum pressure holding and immersion in water methods cannot effectively mark the leak point in a timely manner. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a device for detecting the air tightness of a heat exchange plate, which solves the problems of long detection time and unclear marking of leakage points.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A device for detecting the airtightness of a temperature distribution plate, comprising:

[0007] The testing box is a transparent testing box, and the testing box is filled with visible lightweight floating matter;

[0008] A filter assembly is inserted into the detection chamber, and a receiving cavity is formed in the filter assembly for placing a heat exchange plate to isolate the lightweight floating matter from the heat exchange plate.

[0009] An air extraction device is connected to the interior of the heat exchange plate and is used to create a negative pressure inside the heat exchange plate.

[0010] A detection frame is installed on the outer edge of the detection box, and a planar coordinate system corresponding to the surface of the detection box is provided on the detection frame.

[0011] Compared with existing technologies, the above technical solutions have the following beneficial effects:

[0012] By filling the detection chamber with visible floating objects, wrapping the heat spreader with a filter assembly, and placing it inside the detection chamber, then drawing negative pressure inside the heat spreader, if there is a leak, the floating objects at the leak point will be adsorbed onto the surface of the filter assembly. This allows for rapid detection of the leak point. At the same time, through the detection frame, the leak point can be quickly identified by looking through the transparent detection chamber. The coordinates of the leak point are then marked using the coordinate system on the detection frame, thus quickly determining the leak point.

[0013] Based on the above technical solution, the embodiments of this application can be further improved as follows:

[0014] In one embodiment, the detection box includes:

[0015] The box body is a transparent box with an opening at the top;

[0016] A cover plate that fits and covers the top opening of the housing, the cover plate having a slot for inserting the filter assembly.

[0017] The testing box is designed with an open body and a cover, allowing for quick replacement of floating debris and cleaning of the interior by opening the cover.

[0018] In one embodiment, the slot is a stepped groove, and the bottom of the stepped groove is provided with a sealing ring that matches the filter assembly.

[0019] In one embodiment, the filter assembly includes:

[0020] A filter frame, the interior of which forms the accommodating cavity for accommodating the temperature distribution plate;

[0021] A filter element is disposed on the outer surface of the filter frame;

[0022] A top plate is disposed on the top of the filter frame, and a strip-shaped slot is provided on the top plate for the temperature distribution plate to be inserted.

[0023] In one embodiment, the strip-shaped inlet is sealed with two flexible sealing strips, which are arranged in an overlapping manner.

[0024] Two flexible sealing strips are overlapped and placed at the strip-shaped inlet. After the heat exchange plate is inserted into the strip-shaped inlet, the flexible sealing strip will cover the tail pipe exposed on the heat exchange plate, and the sealing strip can play a good sealing role at this point.

[0025] In one embodiment, a first coordinate and a second coordinate are respectively provided on two adjacent vertical sides of the detection frame.

[0026] In one embodiment, the detection frame is detachably connected to the detection box.

[0027] The detection frame and detection box are made detachable, so that after the heat spreader is removed from the detection box, it can be compared with the detection frame again to check for leaks.

[0028] In one embodiment, the outer surface of the detection box is provided with grid lines corresponding to the coordinate system of the plane on the detection frame. Attached Figure Description

[0029] 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.

[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0031] Figure 2 for Figure 1 A schematic diagram of the longitudinal cross-section structure.

[0032] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle.

[0033] Figure 4 for Figure 1 A schematic diagram of the overall structure of the middle filter assembly and the temperature distribution plate.

[0034] Figure label:

[0035] 1. Detection box; 2. Filter assembly; 3. Detection frame; 4. Sealing ring; 5. Flexible sealing strip; 6. First coordinate; 7. Second coordinate; 8. Heat spreader; 9. Tailpipe;

[0036] 101. Enclosure; 102. Cover plate; 103. Slot;

[0037] 201. Filter frame; 202. Filter element; 203. Top plate; 204. Strip inlet. DETAILED DESCRIPTION

[0038] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0039] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0040] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0041] Furthermore, the terms "first," "second," etc., 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. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0042] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0043] Example

[0044] like Figure 1 As shown, the present invention provides an airtightness testing device for a temperature equalization plate 8, which includes: a testing box 1, a filter assembly 2, and a testing frame 3.

[0045] The testing box 1 is a transparent testing box 1, and the inside of the testing box 1 can be clearly seen from the outside. The testing box 1 is filled with visible lightweight floating material. Specifically, the lightweight floating material can be down or cotton fibers, which will float with the airflow.

[0046] The filter assembly 2 is inserted into the detection box 1. The filter assembly 2 forms a cavity for placing the heat spreader 8 to isolate the light floating objects from the heat spreader 8. When the heat spreader 8 is placed in the filter assembly 2, the filter assembly 2 is placed in the detection box 1. Since the filter assembly 2 can isolate the floating objects but at the same time ensure airflow communication between the inside and outside of the filter assembly 2, the floating objects in the detection box 1 can be affected by the airflow inside the filter assembly 2.

[0047] The interior of the heat spreader 8 is connected to the air extraction device, which provides negative pressure to the interior of the heat spreader 8. The air extraction device is not shown in the figure, but it can be implemented by a suction pump or the like. If there is a leak in the heat spreader 8, an airflow will be generated in the detection box 1 to adsorb the floating objects, which will then be clearly visible. Moreover, the location of the leak on the heat spreader 8 can be quickly determined by adsorption.

[0048] The detection frame 3 is installed on the outer edge of the detection box 1. The hollow area in the middle of the detection frame 3 faces the surface of the detection box 1, so as not to obstruct the view of the inside of the detection box 1. The detection frame 3 is provided with a plane coordinate system corresponding to the surface of the detection box 1, which can quickly and accurately locate the position of the leakage point on the heat spreader 8.

[0049] By filling the detection chamber 1 with visible floating material, wrapping the heat spreader 8 with the filter assembly 2 and placing it in the detection chamber 1, and then drawing a negative pressure inside the heat spreader 8, if there is a leak, the floating material at the leak point will be adsorbed on the surface of the filter assembly 2. In this way, the leak point can be quickly detected. At the same time, through the detection frame 3, the leak point can be quickly seen through the transparent detection chamber 1. The coordinate position of the leak point is marked by the coordinate system on the detection frame 3, thereby quickly determining the leak point.

[0050] Specifically, a first coordinate 6 and a second coordinate 7 are respectively set on the two adjacent vertical sides of the detection frame 3. The first coordinate 6 and the second coordinate 7 can be represented by letters and numbers. In this embodiment, the first coordinate 6 is the horizontal coordinate and is represented by letters, and the second coordinate 7 is the vertical coordinate and is represented by numbers. When locating the coordinates of the leakage point, the first coordinate 6 plus the second coordinate 7 is used to determine the planar position, such as H7.

[0051] Furthermore, to ensure that the coordinates can be determined quickly, the outer surface of the detection box 1 is provided with grid lines corresponding to the coordinate system of the upper plane of the detection frame 3. The grid lines are not shown in the figure. The coordinate position can be determined quickly through the intersecting grid lines.

[0052] The detection box 1 includes a box body 101 and a cover plate 102.

[0053] The housing 101 is a transparent housing with an open top, and can be made of rigid plastic such as acrylic. A cover 102 fits and covers the top opening of the housing 101 to prevent leakage of lightweight floating matter. The cover 102 has a slot 103 for inserting the filter assembly 2. The filter assembly 2, along with the temperature distribution plate 8, is placed into the housing 101 of the testing chamber 1 through the slot 103. Furthermore, by configuring the testing chamber 1 with an open housing 101 and a cover 102, it is possible to quickly replace floating matter inside the housing 101 and clean the interior of the housing 101 by opening the cover 102.

[0054] Specifically, if Figure 3 As shown, the slot 103 is a stepped groove, which can limit the filter assembly 2 to a certain extent. At the same time, the bottom of the stepped groove is provided with a sealing ring 4 that matches the filter assembly 2, which can ensure that the inserted filter assembly 2 and the cover plate 102 have a certain sealing effect and prevent air leakage.

[0055] In this embodiment, as Figure 2 , 4 As shown, the filter assembly 2 includes: a filter frame 201, a filter element 202, and a top plate 203.

[0056] The filter frame 201 has hollowed-out sides and bottom, forming an accommodating cavity for the temperature equalization plate 8. The filter element 202 can have a mesh size smaller than the volume of the floating object to prevent the floating object from passing through. The filter element 202 is wrapped around the outer surface of the filter frame 201. The filter element 202 can form a certain gap with the surface of the temperature equalization plate 8, or it can be attached to the surface of the temperature equalization plate 8, depending on the negative pressure.

[0057] The top plate 203 is located on the top of the filter frame 201. When the filter assembly 2 is inserted into the slot 103, the top plate 203 and the stepped groove form a certain limiting fit. The top plate 203 is provided with a strip-shaped insertion port 204 for the temperature equalization plate 8 to be inserted. After the top plate 203 is fixed to the filter frame 201, the temperature equalization plate 8 can be inserted from the strip-shaped insertion port 204.

[0058] To improve the sealing effect at the strip spigot 204, such as Figure 2 , 3 As shown, two flexible sealing strips 5 are provided to seal the strip-shaped inlet 204. The two flexible sealing strips 5 are overlapped. Specifically, one side of the flexible sealing strip 5 is fixed to the inner wall of the top plate 203, and the other side overlaps with each other to seal the strip-shaped inlet 204 of the top plate 203. By using the two flexible sealing strips 5 overlapping at the strip-shaped inlet 204, after the heat exchange plate 8 is inserted into the strip-shaped inlet 204, the flexible sealing strip 5 will cover the tail pipe 9 exposed outside the heat exchange plate 8, and the sealing strip can play a good sealing role at this point.

[0059] In this embodiment, the detection frame 3 is detachably connected to the detection box 1. Making the detection frame 3 and the detection box 1 detachable allows the heat spreader 8 to be removed from the detection box 1 and then compared with the detection frame 3 again to check for leaks.

[0060] In practical use, after filling the housing 101 with floating materials, cover the housing 102, then insert the filter assembly 2. The top plate 203 of the filter assembly 2 is inserted into the slot 103. At this time, the filter frame 201 and filter element 202 of the filter assembly 2 extend into the detection housing 1. Then, fix the detection frame 3 to the outer edge of the detection housing 1. After inserting the heat spreader 8 through the strip-shaped insertion port 204 of the top plate 203, fix the heat spreader 8. At this time, the main body of the heat spreader 8 is located in the filter assembly 2 in the detection housing 1, and the tail tube 9 of the heat spreader 8 extends out of the detection housing through the strip-shaped insertion port 204. Outside the test chamber 1, the tail pipe 9 is connected to the air extraction device to provide negative pressure to the inside of the heat spreader plate 8. If there is a leak in the heat spreader plate 8, the floating objects inside the test chamber 1 will drift away with the airflow generated by the leak. Due to the presence of the filter screen 202, the floating objects will adhere to the surface of the filter screen 202. After determining the location of the leak point through the plane coordinate system on the test frame 3, the suction device can be turned off and the heat spreader plate 8 can be taken out. Due to the presence of the filter screen 202, the floating objects are blocked and will not escape from the strip inlet 204. There is no medium adhering to the surface of the heat spreader plate 8, and no cleaning is required.

[0061] 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. A device for detecting the airtightness of a temperature distribution plate, characterized in that, include: The testing box is a transparent testing box, and the testing box is filled with visible lightweight floating matter; A filter assembly is inserted into the detection chamber, and a receiving cavity is formed in the filter assembly for placing a heat exchange plate to isolate the lightweight floating matter from the heat exchange plate. An air extraction device is connected to the interior of the heat exchange plate and is used to create a negative pressure inside the heat exchange plate. A detection frame is installed on the outer edge of the detection box, and a planar coordinate system corresponding to the surface of the detection box is provided on the detection frame.

2. The heat exchange plate airtightness testing device according to claim 1, characterized in that, The testing box includes: The box body is a transparent box with an opening at the top; A cover plate that fits and covers the top opening of the housing, the cover plate having a slot for inserting the filter assembly.

3. The heat exchange plate airtightness testing device according to claim 2, characterized in that, The slot is a stepped groove, and the bottom of the stepped groove is provided with a sealing ring that matches the filter assembly.

4. The heat exchange plate airtightness testing device according to claim 2, characterized in that, The filter assembly includes: A filter frame, the interior of which forms the accommodating cavity for accommodating the temperature distribution plate; A filter element is disposed on the outer surface of the filter frame; A top plate is disposed on the top of the filter frame, and a strip-shaped slot is provided on the top plate for the temperature distribution plate to be inserted.

5. The heat exchange plate airtightness testing device according to claim 4, characterized in that, The strip-shaped inlet is sealed with two flexible sealing strips, which are arranged in an overlapping manner.

6. The heat exchange plate airtightness testing device according to claim 1, characterized in that, The detection frame has a first coordinate and a second coordinate respectively set on the two adjacent vertical sides.

7. The heat exchange plate airtightness testing device according to claim 1, characterized in that, The detection frame is detachably connected to the detection box.

8. The heat exchange plate airtightness testing device according to claim 1, characterized in that, The outer surface of the detection box is provided with grid lines corresponding to the coordinate system of the plane on the detection frame.

Images