Micropore filling device and method

Abstract

The invention belongs to the technical field of fluid medium filling, and particularly discloses a micropore filling device and method.The micropore filling device comprises a filling barrel, a storage barrel, an air exhaust vacuum pump, a workpiece cage and a flow guide unit, a filling barrel upper cover is arranged at the top of the filling barrel, a storage barrel upper cover is arranged at the top of the storage barrel, and the upper portion of the filling barrel and the upper portion of the storage barrel communicate with a communicating pipeline; a fluid medium is stored in the storage barrel, a feeding pipe for feeding materials into the filling barrel is communicated between the lower part of the storage barrel and the filling barrel, and a feeding ball valve is mounted on the feeding pipe; an air suction pipe is connected to the air suction vacuum pump, an air suction pipe two-way ball valve is installed on the air suction pipe, the top end of the air suction pipe is an open end and located on the upper portion of the storage barrel, the air suction pipe communicates with an air inlet pipe opening, and an air inlet ball valve is installed on the air inlet pipe opening; the workpiece cage and the flow guide unit can be placed in the filling barrel and can be taken out of the filling barrel. The flow guide unit comprises a flow guide groove, and the bottom of the flow guide groove communicates with an injection needle. Batch pouring can be achieved, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of fluid medium perfusion, and in particular to a microporous perfusion device and method. Background Art

[0002] The traditional glue for thick film circuits, integrated voltage converters, and electromagnetic coils is poured and sealed in the form of fluid. The traditional pouring process includes opening the workpiece shell - pouring at normal pressure - curing - bonding the plug. The glue pouring process in the form of fluid is prone to form bubble defects, which reduces the qualified rate and service life of the package. The shell can only be bonded and packaged after the glue is cured. The production cycle is long and batch pouring is not allowed.

[0003] In addition, various phase change capsules have emerged in recent years, among which it has always been a difficult problem to infuse metal phase change capsules with phase change media. The current method in the industry is to first produce the metal shell of the capsule, then punch holes in the shell, and then infuse the phase change medium into a single capsule in a quantitative manner. After the infusion, the holes are sealed, which requires high precision. This method cannot be used for batch infusion, and large-scale production is difficult and has high production costs. Summary of the invention

[0004] The invention provides a microporous perfusion device and method, aiming to enable batch perfusion and improve production efficiency.

[0005] The present invention is realized by the following technical scheme: a microporous perfusion device, comprising a perfusion barrel, a storage barrel, an air extraction vacuum pump, a workpiece cage and a flow guide unit, the top of the perfusion barrel is provided with a perfusion barrel upper cover, the top of the storage barrel is provided with a storage barrel upper cover, the upper part of the perfusion barrel is connected with the upper part of the storage barrel by a connecting pipe, the storage barrel stores a fluid medium, the lower part of the storage barrel is connected with the perfusion barrel by a feeding pipe for feeding the perfusion barrel, and a feeding ball valve is installed on the feeding pipe;

[0006] The vacuum pump is connected to an air extraction pipe, a two-way ball valve of the air extraction pipe is installed on the air extraction pipe, the top of the air extraction pipe is an open end and is located at the upper part of the storage barrel, the air extraction pipe is connected to an air inlet pipe port, and an air inlet ball valve is installed on the air inlet pipe port;

[0007] The workpiece cage and the guide unit can both be placed in the pouring barrel and can both be taken out from the pouring barrel. The guide unit comprises a guide groove, and the bottom of the guide groove is connected to an injection needle.

[0008] Compared with the prior art, this solution has the following advantages and beneficial effects:

[0009] In this solution, the workpiece is placed at the bottom of the pouring barrel, and the fluid medium in the storage barrel is fed into the pouring barrel through the feed pipe. This allows multiple workpieces to be poured at the same time, which can effectively improve the efficiency of the entire pouring process and thus improve production efficiency.

[0010] In this scheme, the workpiece is infused by microporous infusion, and the workpiece is placed in a infusion barrel. The fluid medium stored in the storage barrel enters the infusion barrel through a feed pipe to immerse the workpiece. In this scheme, an exhaust vacuum pump is provided, which can first evacuate the entire device to make the infusion environment a vacuum state, thereby reducing bubble defects after the infusion fluid medium solidifies, thereby improving the pass rate and service life. After vacuuming, the internal space of the workpiece can have a negative pressure. When the fluid medium enters the infusion barrel to immerse the workpiece, the workpiece can accelerate the speed of the fluid medium being poured into its inner cavity under the action of negative pressure.

[0011] The present solution can be applied to the perfusion of workpieces with different requirements for the fluid medium, for example, for the perfusion of metal phase change capsules, the fluid medium is usually water. At this time, it is only necessary to place multiple workpieces in a workpiece cage so that they can be placed in a perfusion barrel together. The perfusion of the workpieces can be completed by injecting the water in the storage barrel into the perfusion barrel to cover the workpieces. For some workpieces, the fluid medium to be perfused is glue. During perfusion, after the workpiece is placed in the perfusion barrel, a guide groove is placed in the perfusion barrel, and the fluid medium in the storage barrel is injected into the guide groove. The injection needle on the guide groove is inserted into the perfusion hole on the workpiece, so that the fluid medium can be accurately injected into the workpiece.

[0012] This solution can use the workpiece cage and the guide groove as needed according to the different pouring requirements of different workpieces. It is flexible and convenient to use, and can realize the pouring of different workpieces on the same device.

[0013] Furthermore, a handle is connected to the workpiece cage.

[0014] Beneficial effect: The setting of the handle makes it more convenient to take and place the workpiece cage.

[0015] Furthermore, the guide unit also includes a workpiece table, and a workpiece groove for placing the workpiece is formed on the workpiece table.

[0016] Beneficial effect: In this solution, the workpiece groove on the workpiece table is used to place the workpiece and position the workpiece, so that the injection needle at the bottom of the guide groove can be more accurately inserted into the injection hole of the workpiece to inject the fluid medium into the inner cavity of the workpiece.

[0017] Furthermore, a pressure gauge is installed on the communicating pipe.

[0018] Beneficial effect: The setting of the pressure gauge can more intuitively judge the pressure inside the entire device, thereby facilitating judgment on whether it is necessary to continue vacuuming.

[0019] Furthermore, a storage barrel sealing ring is provided between the storage barrel upper cover and the storage barrel, and a pouring barrel sealing ring is provided between the pouring barrel upper cover and the pouring barrel.

[0020] Beneficial effect: The arrangement of the storage barrel sealing ring and the filling barrel sealing ring in this solution can ensure the sealing of the storage barrel and the filling barrel, thereby ensuring that the entire filling device can maintain a vacuum degree.

[0021] A microporous perfusion method, using the above-mentioned microporous perfusion device, comprises the following steps:

[0022] Opening one or more injection holes on the workpiece;

[0023] Place the workpiece in the pouring bucket;

[0024] Injecting fluid medium into the storage barrel;

[0025] The device is vacuumed, and the two-way ball valve of the vacuum pipe and the vacuum pump are opened to vacuum the inside of the filling barrel and the storage barrel;

[0026] Stop vacuuming. When the internal air pressure of the filling barrel and the storage barrel reaches the filling requirement, close the two-way ball valve of the air extraction pipe and the air extraction vacuum pump;

[0027] Filling, open the feed ball valve, so that the fluid medium in the storage barrel enters the filling barrel through the feed ball valve and the feed pipe to completely immerse the workpiece; if the filling barrel is equipped with a guide groove, the fluid medium in the storage barrel enters the guide groove through the feed ball valve and the feed pipe;

[0028] Take out the workpiece filled with fluid medium.

[0029] Beneficial effect: The infusion method of this scheme can achieve the purpose of batch infusion, thereby improving production efficiency. At the same time, in this scheme, before infusion, the infusion barrel and the storage barrel are evacuated to keep the entire device in a vacuum state, which can reduce the bubble defects generated after the infusion fluid medium solidifies, thereby improving the qualification rate and service life.

[0030] Furthermore, before placing the workpiece in the pouring barrel, the workpiece is first placed in a workpiece cage, and then the workpiece cage containing the workpiece is placed at the bottom of the pouring barrel;

[0031] If the workpiece needs diversion and perfusion, a diversion groove is placed in the perfusion barrel, and the injection needle on the diversion groove is inserted into the perfusion hole of the workpiece. If the workpiece does not need diversion and perfusion, the diversion groove is not placed.

[0032] Beneficial effects: In this solution, the workpiece cage and the guide groove can be used as needed according to the different pouring requirements of different workpieces. It is flexible and convenient to use, and the pouring of different workpieces can be achieved on the same device. When the workpiece needs to be diverted and poured, the guide groove can be installed in the pouring barrel, and when diversion and pouring are not required, the guide groove can be taken out.

[0033] Furthermore, during perfusion, normal pressure perfusion or high pressure perfusion is adopted.

[0034] Beneficial effects: In this scheme, normal pressure perfusion or high pressure perfusion can be selected according to actual perfusion needs.

[0035] Furthermore, the air inlet pipe port is connected to the air or to a high-pressure gas device; when normal pressure perfusion is adopted, the air inlet pipe port is connected to the air, the two-way ball valve of the air extraction pipe is opened, and then the air inlet ball valve is opened to allow air to enter the storage barrel and the perfusion barrel from the air inlet pipe port; when high-pressure perfusion is adopted, the air inlet pipe port is connected to the high-pressure gas device, the two-way ball valve of the air extraction pipe is opened, and then the air inlet ball valve is opened to allow high-pressure air to enter the storage barrel and the perfusion barrel from the air inlet pipe port to pressurize the perfusion barrel.

[0036] Beneficial effect: In this scheme, the air inlet pipe is connected to different devices to realize normal pressure infusion by letting air into the infusion barrel, or pressurizing the infusion barrel to realize high pressure infusion. It has a simple structure and is easy to operate when selecting normal pressure infusion and high pressure infusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0038] Figure 1 It is a longitudinal cross-sectional view of a workpiece cage placed in Example 1 of a microporous perfusion device of the present invention;

[0039] Figure 2 It is a longitudinal cross-sectional view of a microporous perfusion device in Example 1 of the present invention in which a flow guide unit is installed;

[0040] Figure 3 The present invention is a flow chart of a microporous perfusion method.

[0041] Marks and corresponding parts names in the attached drawings:

[0042] Pressure gauge 1, connecting pipe 2, filling barrel cover 3, filling barrel sealing ring 4, filling barrel 5, handle 6, guide groove 7, workpiece cage 8, filling barrel base 9, storage barrel cover 10, storage barrel sealing ring 11, storage barrel 12, exhaust pipe 13, feed pipe 14, feed ball valve 15, storage barrel base 16, storage barrel frame 17, exhaust pipe two-way ball valve 18, exhaust vacuum pump 19, inlet ball valve 20, inlet pipe port 21, workpiece table 22, workpiece slot 221. DETAILED DESCRIPTION

[0043] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary implementation modes of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0044] Example 1

[0045] like Figure 1 As shown, this embodiment 1 provides a microporous perfusion device, including a perfusion barrel 5, a storage barrel 12 and an air vacuum pump 19, a workpiece cage 8 and a diversion unit, a perfusion barrel upper cover 3 is provided on the top of the perfusion barrel 5, a storage barrel upper cover 10 is provided on the top of the storage barrel 12, the upper part of the perfusion barrel 5 is connected to the upper part of the storage barrel 12 by a connecting pipe 2, and a pressure gauge 1 is installed on the connecting pipe 2, which can intuitively display the pressure value between the storage barrel 12 and the perfusion barrel 5.

[0046] The storage barrel 12 stores a fluid medium, a storage barrel sealing ring 11 is provided between the storage barrel upper cover 10 and the storage barrel 12, and a pouring barrel sealing ring 4 is provided between the pouring barrel upper cover 3 and the pouring barrel 5. After opening the storage barrel upper cover 10 and the pouring barrel upper cover 3, it is convenient to put the fluid medium and the workpiece into the storage barrel 12 and the pouring barrel 5 respectively.

[0047] In this embodiment, the bottom of the filling barrel 5 is the filling barrel base 9, and the bottom of the storage barrel 12 is the storage barrel base 16. The area of ​​the storage barrel base 16 and the area of ​​the filling barrel base 9 are respectively larger than the cross-section of the storage barrel 12 and the filling barrel 5, which can improve the installation stability of the storage barrel 12 and the filling barrel 5.

[0048] A feed pipe 14 for feeding into the perfusion barrel 5 is connected between the lower part of the storage barrel 12 and the perfusion barrel 5, and a feed ball valve 15 is installed on the feed pipe 14. A microporous perfusion device in this embodiment also includes a storage barrel frame 17. The storage barrel 12 is located at the top of the storage barrel frame 17, and the bottom of the storage barrel 12 is located above the bottom of the perfusion barrel 5. In this embodiment, the storage barrel base 16 is fixedly connected to the storage barrel frame 17 by bolts, thereby ensuring the stability of the storage barrel 12. The provision of the storage barrel frame 17 increases the installation height of the storage barrel 12, so that the fluid can automatically flow into the perfusion barrel 5 by the gravity of the fluid.

[0049] In this embodiment, the vacuum pump 19 is installed on the inner side of the storage barrel frame 17, and the vacuum pump 19 is connected to the vacuum pump 19. The vacuum pipe 13 is installed with a two-way ball valve 18 for the vacuum pipe. The two-way ball valve 18 for the vacuum pipe is located on the inner side of the storage barrel frame 17. The vacuum pipe 13 is vertically arranged, and the top end of the vacuum pipe 13 is an open end, and the top end of the vacuum pipe 13 passes through the storage barrel 12 and is located at the upper part of the storage barrel 12.

[0050] The workpiece cage 8 and the guide unit in this embodiment can be placed in the pouring barrel 5 and can be taken out from the pouring barrel 5, wherein the workpiece cage 8 is hollow, so that it is convenient for the fluid medium to enter the workpiece in the workpiece cage 8, and the workpiece cage 8 can be taken out from the pouring barrel 5. Specifically: in this embodiment, a handle 6 is connected to the workpiece cage 8, and the setting of the handle 6 makes it convenient to place the entire workpiece cage 8 into the pouring barrel 5 or to lift the entire workpiece cage 8 upward from the pouring barrel 5, so as to facilitate the collection of the workpieces after the pouring.

[0051] In this embodiment, the lower part of the exhaust pipe 13 is connected to an air inlet pipe port 21, which is located on one side of the exhaust pipe 13 and is perpendicular to and connected to the exhaust pipe 13. An air inlet ball valve 20 is installed on the air inlet pipe port 21. The air inlet pipe port 21 is connected to air during normal pressure perfusion, and is connected to a high-pressure gas device (such as a gas booster pump) during high-pressure perfusion, and can also be connected to a filtering device if necessary.

[0052] Combination Figure 2 As shown, in this embodiment, the guide unit includes a guide groove 7 and a workpiece table 22. The bottom of the guide groove 7 is connected to an injection needle (not shown in the figure). The workpiece table 22 is provided with a workpiece groove 221 for placing the workpiece. The shape of the workpiece groove 221 matches the shape of the workpiece, which is convenient for more accurate positioning of the workpiece and for the injection needle at the bottom of the guide groove 7 to be accurately inserted into the injection hole of the workpiece. The guide groove 7 is located below the outlet of the feed pipe 14, so as to ensure that the fluid medium in the storage barrel can flow into the guide groove 7, and the guide groove 7 is placed on the top of the workpiece table 22 and the injection needle hole at the bottom of the guide groove 7 is inserted into the workpiece injection hole in the workpiece groove 221.

[0053] This embodiment can be used for the injection of various workpieces, and can be applied to the injection of integrated circuit refrigerant packaging, thick film circuit packaging, integrated voltage converters, inductors and transformers, electromagnetic coils, phase change capsules, etc. in the form of fluid.

[0054] When the metal phase change capsule beads need to be poured, the guide groove 7 and the workpiece table 22 are taken out, and after the workpiece is placed in the workpiece cage 8, the workpiece cage 8 with the workpiece placed is placed in the pouring barrel 5 for pouring.

[0055] When some workpieces (such as thick film circuits) are being poured, since the fluid medium has viscosity and needs to be guided, the workpiece table 22 can be placed in the pouring barrel 5, the workpiece to be poured is placed in the workpiece groove 221, and then the guide groove 7 is placed, so that the injection needle at the bottom of the guide groove 7 is inserted into the pouring hole / micropore of the workpiece. Specifically: a single micropore with a diameter of 0.5 mm is opened on the thick film circuit shell, and arranged in a single layer in a regular manner in the workpiece groove 221, and then the injection needle (diameter 0.35 mm) under the guide groove 7 is inserted into the workpiece micropore, and the fluid medium in the storage barrel 12 flows into the guide groove 7, and is injected into the workpiece micropore through the injection needle on the guide groove 7.

[0056] When the guide groove 7 needs to be taken out from the pouring barrel 5, the guide groove 7 and the workpiece table 22 only need to be lifted up to facilitate the placement of the workpiece cage 8 in the pouring barrel 5, so that different pouring requirements for different workpieces can be met in the same set of pouring equipment.

[0057] Combination Figure 3 As shown, this embodiment also discloses a microporous perfusion method, using the above-mentioned microporous perfusion device, including the following steps:

[0058] Step 1, opening one or more injection holes on the workpiece, the injection holes are 0.5 mm micro-holes, and the micro-holes penetrate into the closed space that needs fluid injection;

[0059] Step 2, cleaning the workpiece: cleaning the workpiece;

[0060] Step 3, placing the cleaned workpiece in the pouring barrel 5, closing the upper cover 3 of the pouring barrel, before placing the workpiece in the pouring barrel 5, first put the workpiece into the workpiece cage 8, and then place the workpiece cage 8 containing the workpiece at the bottom of the pouring barrel 5;

[0061] If the workpiece needs diversion and perfusion, put the workpiece table 22 into the perfusion barrel 5, then put the workpiece to be perfused into the workpiece groove 221 of the workpiece table 22, and finally put the diversion groove 7 into it, so that the injection needle on the diversion groove 7 is inserted into the perfusion hole of the workpiece. If the workpiece does not need diversion and perfusion, do not put the workpiece table 22 and the diversion groove 7 into it;

[0062] Step 4, inject the fluid medium into the storage barrel 12, and close the storage barrel cover 10;

[0063] Step 5, the device is evacuated, the two-way ball valve 18 of the evacuation pipe and the evacuation vacuum pump 19 are opened to evacuate the inside of the filling barrel 5 and the storage barrel 12, and the indicated value of the barometer 1 is observed;

[0064] Step 6, stop vacuuming. When the internal air pressure of the filling barrel 5 and the storage barrel 12 reaches the filling requirement, that is, when the value indicated by the barometer 1 is the filling value, close the two-way ball valve 18 of the air extraction pipe and the air extraction vacuum pump 19;

[0065] Step 7, perfusion, open the feed ball valve 15, so that the fluid medium in the storage barrel 12 enters the perfusion barrel 5 through the feed ball valve 15 and the feed pipe 14 to completely immerse the workpiece; if the perfusion barrel 5 is equipped with a guide groove 7, the fluid medium in the storage barrel 12 enters the guide groove 7 through the feed ball valve 15 and the feed pipe 14; when perfusing, normal pressure perfusion or high pressure perfusion is adopted, specifically: the air inlet pipe port 21 is connected to the air or connected to the high-pressure gas device; when normal pressure perfusion is adopted, the air inlet pipe port 21 is connected to the air, the two-way ball valve 18 of the air extraction pipe is opened, and then the air inlet ball valve 20 is opened to allow air to enter the storage barrel 12 and the perfusion barrel 5 from the air inlet pipe port 21;

[0066] When high-pressure perfusion is adopted, the air inlet port 21 is connected to the high-pressure gas device, the two-way ball valve 18 of the air extraction pipe is opened, and then the air inlet ball valve 20 is opened, so that the high-pressure air enters the storage barrel 12 and the perfusion barrel 5 from the air inlet port 21 to pressurize the perfusion barrel 5; whether to use normal pressure perfusion or high-pressure perfusion and the high-pressure pressure are determined by the viscosity of the fluid medium;

[0067] Step 8, take out the workpiece that has been filled with the fluid medium, wait for a period of time, open the upper cover 3 of the filling barrel, and take out the workpiece that has been filled with the fluid medium.

[0068] Example 2

[0069] The microporous perfusion device and perfusion method of the present invention can achieve precise perfusion for different fluid media. This technology can be applied to the perfusion of integrated circuit refrigerant packaging, thick film circuit packaging, integrated voltage converters, inductors and transformers, electromagnetic coils, phase change capsules, etc. in the form of fluid, but is not limited to the above fields.

[0070] This embodiment is specifically described by taking thick film circuit packaging as an example.

[0071] The potting method of thick film circuit package includes the following steps:

[0072] Step 1, opening one or more injection holes with a diameter of 0.5 mm on the thick film shell;

[0073] Step 2, cleaning the workpiece and the thick film shell;

[0074] Step 3, put the workpiece table 22 in the pouring barrel 5, arrange the cleaned thick film shell single layer regularly in the workpiece groove 221, and then install the guide groove 7 in the pouring barrel 5, the guide groove 7 is located below the discharge port of the feed pipe 14, and the injection needle (diameter 0.35mm) below the guide groove 7 is inserted into the workpiece micropore;

[0075] Step 4, injecting a fluid medium into the storage barrel 12, the fluid medium is epoxy resin, model: HJ-317B, viscosity: 70-90CPS, curing time: 24 hours;

[0076] Step 5, the device is evacuated, the two-way ball valve 18 of the evacuation pipe and the evacuation vacuum pump 19 are opened to evacuate the inside of the filling barrel 5 and the storage barrel 12, and the indicated value of the barometer 1 is observed;

[0077] Step 6, stop vacuuming, when the value indicated by the barometer 1 is the perfusion value, close the two-way ball valve 18 of the air extraction pipe and the air extraction vacuum pump 19;

[0078] Step 7, perfusion, open the feed ball valve 15, so that the fluid medium in the storage barrel 12 enters the guide groove 7 through the feed ball valve 15 and the feed pipe 14 and enters the inside of the thick film shell through the injection needle; whether to use normal pressure perfusion or high pressure perfusion and the high pressure pressure depends on the viscosity of the fluid medium. In this embodiment, normal pressure perfusion is used, the two-way ball valve 18 of the air extraction pipe is opened, and the inlet ball valve 20 is slowly opened to allow air to enter the device;

[0079] Step 8, take out the workpiece filled with the fluid medium, wait for a period of time to allow the fluid medium to solidify, open the upper cover 3 of the filling barrel, and take out the workpiece filled with the fluid medium.

[0080] Traditional process: shell opening - normal pressure pouring - curing - bonding of plugging piece.

[0081] Production cycle: 48 hours.

[0082] Number of internal defects and tiny bubbles: 65 out of 1,000 pieces were detected (there were tiny bubbles but the product was qualified).

[0083] This process: hollow shell with injection hole - vacuum injection - curing.

[0084] In this embodiment, the process method implements vacuum degree: 100Pa±10%, and injection pressure: 101Kpa (1 atmosphere).

[0085] The production cycle of this process method is 24 hours.

[0086] The number of tiny bubbles in the internal defects of this process: 9 pieces were detected out of 1000 pieces (there were tiny bubbles but the product was qualified).

[0087] Conclusion: Using this process, the number of internal defect tiny bubbles is reduced by 86.15% compared with the traditional process, and the production cycle is 24 hours, which is half of that of the traditional process.

[0088] Example 3

[0089] The difference between this embodiment and embodiment 2 is that this embodiment takes phase change capsule packaging as an example for specific description.

[0090] Metal phase change capsules are a special solid-liquid energy storage material, with metal (alloy) material as the capsule wall and phase change liquid material encapsulated inside as the capsule core. The phase change material completes the phase change process inside the capsule, effectively preventing leakage and improving stability and thermal conductivity. 1kg of 0℃ water converted into 1kg of 0℃ ice will release 334kJ of heat, which is enough to heat 1kg of water from 1°C to 80℃. Water can absorb or release a large amount of heat energy during the isothermal phase change process and is the most common phase change material.

[0091] In this embodiment, a microporous perfusion device is described by taking its application in a metal phase change capsule as an example, and the workpiece to be perfused is a metal phase change capsule ball as an example.

[0092] The filling method of the metal phase change capsule pellets comprises the following steps:

[0093] Step 1, opening one or more injection holes on the workpiece;

[0094] Step 2, cleaning the workpiece: cleaning the workpiece;

[0095] Step 3, placing the cleaned workpiece in the pouring barrel 5. In this embodiment, before placing the workpiece in the pouring barrel 5, the workpiece is first placed in the workpiece cage 8, and then the workpiece cage 8 containing the workpiece is placed at the bottom of the pouring barrel 5, and the pouring barrel cover 3 is closed;

[0096] Step 4, injecting a fluid medium into the storage barrel 12, the fluid medium in this embodiment is water, injecting water into the storage barrel 12 to the water level line of the storage barrel 12, and closing the storage barrel cover 10;

[0097] Step 5, the device is evacuated, the two-way ball valve 18 of the evacuation pipe and the evacuation vacuum pump 19 are opened to evacuate the inside of the filling barrel 5 and the storage barrel 12, and the indicated value of the barometer 1 is observed;

[0098] Step 6, stop vacuuming, when the vacuum degree reaches -82 kPa, close the two-way ball valve 18 of the exhaust pipe and the exhaust vacuum pump 19;

[0099] Step 7, pouring, open the feed ball valve 15, so that the water in the storage barrel 12 enters the pouring barrel 5 through the feed ball valve 15 and the feed pipe 14 to completely immerse the workpiece;

[0100] Step 8, take out the workpiece filled with the fluid medium, open the ball inlet valve 20, make the filling barrel 5 at normal pressure, open the filling barrel cover 3 after 5 minutes, and take out the workpiece that has been filled with the fluid medium.

[0101] In this embodiment, during the infusion, water can be quickly flowed into the metal phase change capsule by evacuating the interior of the device, and the effect of batch infusion can be achieved, thereby increasing the speed of infusion.

[0102] Traditional process: shell welding - shell drilling - injection of phase change liquid - welding of injection holes.

[0103] Production cycle: 28 seconds / piece, total production time for 1,000 samples: 28,000 seconds.

[0104] Pressure testing: 23 leaks were detected out of 1,000 pieces.

[0105] Number of leaks detected after high and low temperature cycles: 84 out of 1,000 pieces.

[0106] This process: hollow shell with injection micropores - vacuum infusion - sealing and welding of micropores.

[0107] The production cycle of this process is the same as the total production time of 1,000 samples: 120 seconds.

[0108] Pressure testing: 0 leaks detected out of 1000 pieces.

[0109] Number of leaks after three inspections: 0 out of 1000 pieces (leakage is considered unqualified).

[0110] Conclusion: The process involved in this patent improves the product qualification rate from 89.3% to 100%. The process involved in this patent can greatly shorten the production time because it can be poured in batches. The pouring time of the above sample is shortened from 28 seconds to 0.12 seconds, and the production cycle is shortened by 233 times (the actual batch production is only determined by the volume of the workpiece cage 8), which is suitable for large-scale production.

[0111] It should be noted that the above description of the disclosed embodiments enables professionals and technicians in the field to implement or use the present application. Various modifications to these embodiments will be apparent to professionals and technicians in the field, and the general principles defined herein can be implemented in other embodiments without departing from the scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features disclosed herein.

[0112] In the description of the present invention, it should be noted that the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0113] In the description of this document, terms such as "up", "down", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", and "longitudinal" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only used to illustrate the relative positional relationships between the various components or components, and do not particularly limit the specific installation orientations of the various components or components.

[0114] In the description of this document, some terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances.

[0115] In the description of this document, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0116] The structures, proportions, sizes, etc. drawn in the drawings in this application are only used to match the contents disclosed in this technical briefing book for technical personnel in this field to understand and read, and are not used to limit the restrictive conditions for the implementation of this application. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0117] The terms used in this document are those common terms currently widely used in the art in consideration of the functions of the present disclosure, but these terms may vary according to the intention of a person of ordinary skill in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in this case, their detailed meanings will be described in the detailed description of the present disclosure. Therefore, the terms used in the document should not be understood as simple names, but rather as an overall description based on the meaning of the terms and the present disclosure.

[0118] Flowcharts or text are used in this document to illustrate the operating steps performed according to the embodiments of the present application. It should be understood that the operating steps in the embodiments of the present application are not necessarily accurately performed in the order of recording. On the contrary, various steps can be processed in reverse order or simultaneously as needed. At the same time, other operations can also be added to these processes, or a certain step or several steps can be removed from these processes.

[0119] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A microporous perfusion device, characterized in that: It includes a pouring barrel, a storage barrel, an exhaust vacuum pump, a workpiece cage and a guide unit. The top of the pouring barrel is provided with a pouring barrel upper cover, the top of the storage barrel is provided with a storage barrel upper cover, the upper part of the pouring barrel is connected with the upper part of the storage barrel by a connecting pipe, the storage barrel stores a fluid medium, the lower part of the storage barrel is connected with the pouring barrel by a feeding pipe for feeding the pouring barrel, and a feeding ball valve is installed on the feeding pipe; The vacuum pump is connected to an air extraction pipe, a two-way ball valve of the air extraction pipe is installed on the air extraction pipe, the top of the air extraction pipe is an open end and is located at the upper part of the storage barrel, the air extraction pipe is connected to an air inlet pipe port, and an air inlet ball valve is installed on the air inlet pipe port; The workpiece cage and the guide unit can both be placed in the pouring barrel and can both be taken out from the pouring barrel. The guide unit comprises a guide groove, and the bottom of the guide groove is connected to an injection needle.

2. A microporous perfusion device according to claim 1, characterized in that: The workpiece cage is connected with a handle.

3. A microporous perfusion device according to claim 1, characterized in that: The guide unit also includes a workpiece table, and a workpiece groove for placing the workpiece is formed on the workpiece table.

4. A microporous perfusion device according to claim 1, characterized in that: A pressure gauge is installed on the communicating pipe.

5. A microporous perfusion device according to claim 1, characterized in that: A storage barrel sealing ring is provided between the storage barrel upper cover and the storage barrel, and a pouring barrel sealing ring is provided between the pouring barrel upper cover and the pouring barrel.

6. A microporous perfusion method, characterized in that: Using a microporous perfusion device according to any one of claims 1 to 5 comprises the following steps: Opening one or more injection holes on the workpiece; Place the workpiece in the pouring bucket; Injecting fluid medium into the storage barrel; The device is vacuumed, and the two-way ball valve of the vacuum pipe and the vacuum pump are opened to vacuum the inside of the filling barrel and the storage barrel; Stop vacuuming. When the internal air pressure of the filling barrel and the storage barrel reaches the filling requirement, close the two-way ball valve of the air extraction pipe and the air extraction vacuum pump; Filling, open the feed ball valve, so that the fluid medium in the storage barrel enters the filling barrel through the feed ball valve and the feed pipe to completely immerse the workpiece; if the filling barrel is equipped with a guide groove, the fluid medium in the storage barrel enters the guide groove through the feed ball valve and the feed pipe; Take out the workpiece filled with fluid medium.

7. A microporous perfusion method according to claim 6, characterized in that: Before placing the workpiece in the pouring barrel, the workpiece is first placed in the workpiece cage, and then the workpiece cage containing the workpiece is placed at the bottom of the pouring barrel; If the workpiece needs diversion and perfusion, place the diversion groove in the perfusion barrel, and insert the injection needle on the diversion groove into the perfusion hole of the workpiece. If the workpiece does not need diversion and perfusion, do not place the diversion groove.

8. A microporous perfusion method according to claim 6, characterized in that: During perfusion, normal pressure perfusion or high pressure perfusion is used.

9. A microporous perfusion method according to claim 7, characterized in that: The air inlet pipe is connected to the air or to a high-pressure gas device; when normal pressure perfusion is adopted, the air inlet pipe is connected to the air, the two-way ball valve of the air extraction pipe is opened, and then the inlet ball valve is opened to allow air to enter the storage barrel and the perfusion barrel from the air inlet pipe; when high-pressure perfusion is adopted, the air inlet pipe is connected to the high-pressure gas device, the two-way ball valve of the air extraction pipe is opened, and then the inlet ball valve is opened to allow high-pressure air to enter the storage barrel and the perfusion barrel from the air inlet pipe to pressurize the perfusion barrel.

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