Fan controller air tightness testing equipment

Abstract

The present invention discloses a fan controller air tightness testing device, comprising an operating table, a top plate provided on the top of the operating table, a vertical plate fixedly connected between the operating table and the top plate, a mold structure provided on the top of the operating table; the mold structure comprises an upper mold and a lower mold, and the upper mold is arranged at the bottom of the top plate. The present invention places a sample to be tested inside a test sample slot, connects a main gas pipe to external high-pressure gas, inflates a first standard sample slot, a test sample slot, and a second standard sample slot, and after reaching a set value, stabilizes for a period of time, and then observes the values of a first pressure sensor, a second pressure sensor, and a third pressure sensor, as well as the values of a first differential pressure sensor, a second differential pressure sensor, and a third differential pressure sensor. The present invention can reduce the impact of ambient temperature changes, improve test precision and accuracy, perform multiple cross-validations, and prevent systematic errors.

Description

Technical Field

[0001] The present invention relates to the technical field of fan controller detection, and in particular to air tightness detection equipment for a fan controller. Background Art

[0002] During the manufacturing process of fan controllers, they need to be tested for air tightness to check whether there are any leaks in the controller to prevent water from entering during subsequent use, causing product damage and reducing the service life of the fan. When testing the air tightness of fan controllers, the traditional method of testing the waterproof function is to complete the test by rain or immersing it in water. Once the waterproof function of the controller being tested does not meet the requirements, water will enter the controller being tested, and then the circuit board inside the controller will be damaged or even scrapped due to water. Ultimately, the defective product cannot be returned for repair, which is costly. In addition, the accuracy of this detection method is also poor, which will result in a high waterproof defect rate after the controller is used after leaving the factory.

[0003] The Chinese patent with the patent publication number CN216081931U discloses a motor controller air tightness detection device, including a detection platform, on which cylinders are symmetrically installed, a controller body is fixed between the cylinders, a connecting piece is installed on the controller, the connecting piece includes a rotating block and a fixed block, the fixed block is connected to the air outlet of the controller body, the rotating block is movably connected to the air pressure tube, the rotating block is provided with a connecting groove, the air pressure tube is provided with a connecting block, the connecting groove is movably connected to the connecting block, the rotating block is provided with a movable block, the fixed block is provided with a movable groove, the movable groove is movably connected to the movable block, the movable block is provided with a limiting assembly, the movable groove is provided with a limiting hole, the limiting assembly is connected to the limiting hole, the fixed block is provided with a locking assembly, the locking assembly is in contact with the end face of the air pressure tube, and a pressure gauge is installed on the outer wall of the air pressure tube. The utility model can quickly connect the air pressure tube and the air outlet of the controller body, so as to achieve the effect of quickly detecting air tightness, reduce detection time, and has good practicality.

[0004] The Chinese patent publication number CN217155752U discloses a vehicle-mounted controller air tightness testing device, including a box and a controller to be tested. The device is characterized in that a connector is provided on one side of the controller, a mounting plate is fixedly connected to the interior of the box, and a downward pressure cylinder is fixedly connected to the top of the mounting plate. A sealed cavity is formed between the lower die base and the upper die base, and the connector is sealed through one side of the guide plate. Gas is then filled into the sealed cavity through the air inlet hole, and then enters the pressure holding stage. The loss can be monitored by the pressure sensor, quantitatively reflected by the computer, and compared with a pre-set leakage value to determine whether the workpiece is qualified. The detection operation is relatively simple in this way, and there is no need to open the shell, which can improve its detection speed.

[0005] The above-mentioned existing technical solutions still have the following defects: the above devices are difficult to operate, and the changes in external ambient temperature have a great impact on the test results. The test precision and accuracy are not high. If the mold leaks, it is difficult to detect, resulting in system errors.

[0006] Therefore, it is necessary to invent a fan controller air tightness detection device to solve the above problems. Summary of the Invention

[0007] The purpose of the present invention is to provide a fan controller air tightness detection device to solve the problem that the above devices are cumbersome to operate, and the changes in external ambient temperature have a great impact on the test results, the test precision and accuracy are not high, and if the mold leaks, it is difficult to detect, resulting in system errors.

[0008] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a fan controller air tightness detection device includes an operating table, a top plate is provided on the top of the operating table, a vertical plate is fixedly connected between the operating table and the top plate, and a mold structure is provided on the top of the operating table;

[0009] The mold structure includes an upper mold and a lower mold. The upper mold is arranged at the bottom of the top plate. A hydraulic rod is fixedly connected between the upper mold and the top plate. The lower mold is fixedly connected to the top of the operating table. The top of the lower mold is sequentially provided with a first standard sample slot, a test sample slot, and a second standard sample slot.

[0010] The lower mold is provided with a test structure, which includes a main air pipe, which is arranged at the front of the lower mold, and is provided with a main control valve and a total pressure sensor. The first standard sample tank, the second standard sample tank and the test sample tank are respectively provided with a first branch air pipe, a second branch air pipe and a third branch air pipe, and the first branch air pipe, the second branch air pipe and the third branch air pipe are all connected to the main air pipe. The first branch air pipe, the second branch air pipe and the third branch air pipe are all provided with branch control valves. The first branch air pipe is provided with a first pressure sensor, the second branch air pipe is provided with a second pressure sensor, and the third branch air pipe is provided with a third pressure sensor. A first connecting pipe is connected between the first standard sample tank and the test sample tank, and a first differential pressure sensor is provided on the first connecting pipe. A second connecting pipe is connected between the test sample tank and the second standard sample tank, and a second differential pressure sensor is provided on the second connecting pipe. A third connecting pipe is connected between the first standard sample tank and the second standard sample tank, and a third differential pressure sensor is provided on the third connecting pipe.

[0011] Preferably, a first sealing gasket is fixedly connected to the bottom of the upper mold.

[0012] Preferably, a sealing groove is provided on the top of the lower mold, and a sealing protrusion is fixedly connected to the bottom of the upper mold, and the sealing protrusion matches the sealing groove.

[0013] Preferably, the cross-sectional shapes of the sealing groove and the sealing protrusion are both set to be trapezoidal.

[0014] Preferably, a second sealing gasket is fixedly connected to the outer surface of the sealing protrusion.

[0015] Preferably, the first sealing gasket and the second sealing gasket are both made of rubber material.

[0016] Preferably, two guide rods are fixedly connected between the lower mold and the top plate, through holes are opened on both sides of the top of the upper mold, and the guide rods are slidably connected to the through holes.

[0017] Preferably, control switches are provided on both sides of the front of the operating table, and a touch screen is provided on the top of the top plate.

[0018] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0019] 1. When testing the air tightness of the fan controller, place the sample to be tested inside the test sample tank, then move the output end of the hydraulic rod downward so that the upper mold is tightly pressed against the lower mold, connect the main air pipe to the external high-pressure gas, and inflate the first standard sample tank, the test sample tank, and the second standard sample tank. After reaching the set value, stabilize for a period of time, then observe the values of the first pressure sensor, the second pressure sensor, and the third pressure sensor, as well as the values of the first differential pressure sensor, the second differential pressure sensor, and the third differential pressure sensor. If the value of the third differential pressure sensor is less than the set value, and the difference between the two values of the first pressure sensor and the two values of the second pressure sensor are both less than the set value, then the system error is eliminated. Otherwise, the system should be checked. Whether there is a sealing problem; if the difference between the values of the first differential pressure sensor, the second differential pressure sensor and the third pressure sensor twice, and the difference between any two of the three values is greater than the set value, the system cause should be found out; if the difference between the first differential pressure sensor, the second differential pressure sensor and the third pressure sensor twice is less than the set value, the air tightness of the sample to be tested is good; if the difference between the values of the first differential pressure sensor, the second differential pressure sensor and the third pressure sensor twice is greater than the set value and the difference between the three values is less than the preset value, the air tightness of the sample to be tested is unqualified. The present invention can reduce the impact of ambient temperature changes, improve test precision and accuracy, and perform multiple cross-validations to prevent system errors;

[0020] 2. By providing a first sealing gasket, the sealing between the upper mold and the lower mold is improved. By providing a sealing groove and a sealing protrusion, the sealing protrusion is clamped in the sealing groove, so that the connection between the upper mold and the lower mold is tighter, and the sealing between them is improved. The cross-sectional shapes of the sealing groove and the sealing protrusion are both set to trapezoidal, which is convenient for clamping and separating the sealing groove and the sealing protrusion. The outer surface of the sealing protrusion is fixedly connected with a second sealing gasket, so that the connection between the sealing protrusion and the sealing groove is tighter. By providing a guide rod and a through hole, the stability of the upper mold in moving up and down is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is another perspective view of the present invention;

[0024] Figure 3 This is a schematic diagram of the connection structure between the upper mold and the sealing protrusion of the present invention;

[0025] Figure 4 This is a schematic diagram of the connection structure between the mold and the test structure of the present invention;

[0026] Figure 5 For the present invention Figure 4 Top view;

[0027] Figure 6 This is a schematic diagram of the connection structure between the main air pipe and the first branch air pipe of the present invention;

[0028] Figure 7 This is a schematic diagram of the connection structure between the first connecting pipe and the first differential pressure sensor of the present invention.

[0029] Description of reference numerals:

[0030] 1. Operating table; 2. Top plate; 3. Upper mold; 4. Lower mold; 5. Hydraulic rod; 6. First standard sample slot; 7. Test sample slot; 8. Second standard sample slot; 9. Main air pipe; 10. Main control valve; 11. Main pressure sensor; 12. First branch air pipe; 13. Second branch air pipe; 14. Third branch air pipe; 15. Branch control valve; 16. First pressure sensor; 17. Second pressure sensor; 18. Third pressure sensor; 19. First connecting pipe; 20. First differential pressure sensor; 21. Second connecting pipe; 22. Second differential pressure sensor; 23. Third connecting pipe; 24. Third differential pressure sensor; 25. First sealing gasket; 26. Sealing groove; 27. Sealing bump; 28. Guide rod; 29. Through hole; 30. Touch screen. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] The present invention provides Figure 1-7 The fan controller air tightness testing device shown includes an operating table 1, a top plate 2 is provided on the top of the operating table 1, a vertical plate is fixedly connected between the operating table 1 and the top plate 2, and a mold structure is provided on the top of the operating table 1;

[0033] The mold structure includes an upper mold 3 and a lower mold 4. The upper mold 3 is arranged at the bottom of the top plate 2. A hydraulic rod 5 is fixedly connected between the upper mold 3 and the top plate 2. The lower mold 4 is fixedly connected to the top of the operating table 1. The top of the lower mold 4 is sequentially provided with a first standard sample slot 6, a test sample slot 7, and a second standard sample slot 8.

[0034] The lower mold 4 is provided with a test structure, which includes a main air pipe 9, which is arranged at the front of the lower mold 4. The main air pipe 9 is provided with a main control valve 10 and a total pressure sensor 11. The first standard sample tank 6, the second standard sample tank 8 and the test sample tank 7 are respectively provided with a first branch air pipe 12, a second branch air pipe 13 and a third branch air pipe 14. The first branch air pipe 12, the second branch air pipe 13 and the third branch air pipe 14 are all connected to the main air pipe 9. The first branch air pipe 12, the second branch air pipe 13 and the third branch air pipe 14 are all provided with a branch control valve 15. The first branch air pipe 12 is provided with a first pressure sensor 16, the second branch air pipe 13 is provided with a second Pressure sensor 17, a third pressure sensor 18 is provided on the third branch air pipe 14, a first connecting pipe 19 is connected between the first standard sample tank 6 and the test sample tank 7, a first differential pressure sensor 20 is provided on the first connecting pipe 19, a second connecting pipe 21 is connected between the test sample tank 7 and the second standard sample tank 8, a second differential pressure sensor 22 is provided on the second connecting pipe 21, a third connecting pipe 23 is connected between the first standard sample tank 6 and the second standard sample tank 8, a third differential pressure sensor 24 is provided on the third connecting pipe 23, when testing the air tightness of the fan controller, the sample to be tested is placed inside the test sample tank 7, and then the output end of the hydraulic rod 5 is moved downward to press the upper mold 3 tightly. On the lower mold 4, the main gas pipe 9 is connected to the external high-pressure gas to inflate the first standard sample tank 6, the test sample tank 7 and the second standard sample tank 8. After reaching the set value, stabilize for a period of time, and then observe the values of the first pressure sensor 16, the second pressure sensor 17 and the third pressure sensor 18, as well as the values of the first differential pressure sensor 20, the second differential pressure sensor 22 and the third differential pressure sensor 24. If the value of the third differential pressure sensor 24 is less than the set value, and the difference between the two values of the first pressure sensor 16 and the two values of the second pressure sensor 17 are both less than the set value, then the system error is eliminated, otherwise the system should be checked for sealing problems; if the value of the first differential pressure sensor 20, the second differential pressure sensor 22 and the third differential pressure sensor 24 are less than the set value, then the system error is eliminated, otherwise the system should be checked for sealing problems; if the value of the first differential pressure sensor 20, the second differential pressure sensor 22 and the third differential pressure sensor 24 are both ... The difference between the values of the differential pressure sensor 22 and the third pressure sensor 18 twice, if one of the differences between the three values is greater than the set value, the system cause should be found out; if the differences between the first differential pressure sensor 20, the second differential pressure sensor 22 and the third pressure sensor 18 are all less than the set value, the air tightness of the sample to be tested is good; if the differences between the values of the first differential pressure sensor 20, the second differential pressure sensor 22 and the third pressure sensor 18 are all greater than the set value and the differences between the three values are all less than the preset value, the air tightness of the sample to be tested is unqualified. The present invention can reduce the impact of ambient temperature changes, improve test precision and accuracy, and perform multiple cross-validations to prevent system errors.

[0035] like Figure 1-3 As shown, a first sealing gasket 25 is fixedly connected to the bottom of the upper mold 3. The first sealing gasket 25 improves the sealing between the upper mold 3 and the lower mold 4.

[0036] like Figure 1-5 As shown: a sealing groove 26 is provided on the top of the lower mold 4, and a sealing protrusion 27 is fixedly connected to the bottom of the upper mold 3, and the sealing protrusion 27 matches the sealing groove 26. By providing the sealing groove 26 and the sealing protrusion 27, the sealing protrusion 27 is clamped in the sealing groove 26, so that the connection between the upper mold 3 and the lower mold 4 is tighter, and the sealing between them is improved; the cross-sectional shapes of the sealing groove 26 and the sealing protrusion 27 are both set to trapezoidal, which is convenient for clamping and separating the sealing groove 26 and the sealing protrusion 27; a second sealing gasket is fixedly connected to the outer surface of the sealing protrusion 27, so that the connection between the sealing protrusion 27 and the sealing groove 26 is tighter; the first sealing gasket 25 and the second sealing gasket are both made of rubber material.

[0037] like Figure 1-3 As shown: two guide rods 28 are fixedly connected between the lower mold 4 and the top plate 2, and through holes 29 are opened on both sides of the top of the upper mold 3. The guide rods 28 are slidably connected to the through holes 29. By providing the guide rods 28 and the through holes 29, the stability of the upper mold 3 moving up and down is improved; control switches are provided on both sides of the front of the operating table 1, and the control switches control the start of the hydraulic rod 5. A touch screen 30 is provided on the top of the top plate 2, and the device is operated through the touch screen 30.

[0038] Working principle of the present invention:

[0039] Refer to the instruction manual Figure 1-7 When testing the air tightness of the fan controller, place the sample to be tested inside the test sample slot 7, then move the output end of the hydraulic rod 5 downward to press the upper mold 3 tightly against the lower mold 4, connect the main air pipe 9 to the external high-pressure gas, and inflate the first standard sample slot 6, the test sample slot 7, and the second standard sample slot 8. After reaching the set value, stabilize for a period of time, and then observe the values of the first pressure sensor 16, the second pressure sensor 17, and the third pressure sensor 18, as well as the values of the first differential pressure sensor 20, the second differential pressure sensor 22, and the third differential pressure sensor 24. If the value of the third differential pressure sensor 24 is less than the set value, the difference between the two values of the first pressure sensor 16 and the two values of the second pressure sensor 17 is greater than the set value. If the differences are all smaller than the set values, the system error is ruled out, otherwise the system should be checked for sealing problems; if the differences between the values of the first differential pressure sensor 20, the second differential pressure sensor 22 and the third pressure sensor 18 are greater than the set value, the system cause should be identified; if the differences between the values of the first differential pressure sensor 20, the second differential pressure sensor 22 and the third pressure sensor 18 are all smaller than the set value, the air tightness of the sample to be tested is good; if the differences between the values of the first differential pressure sensor 20, the second differential pressure sensor 22 and the third pressure sensor 18 are all greater than the set value and the differences between the three values are all smaller than the preset value, the air tightness of the sample to be tested is unqualified;

[0040] Refer to the instruction manual Figure 1-7 When testing the air tightness of the fan controller, a first sealing gasket 25 is provided to improve the sealing between the upper mold 3 and the lower mold 4. A sealing groove 26 and a sealing protrusion 27 are provided, and the sealing protrusion 27 is clamped in the sealing groove 26, so that the connection between the upper mold 3 and the lower mold 4 is tighter, and the sealing between them is improved. The cross-sectional shapes of the sealing groove 26 and the sealing protrusion 27 are both set to trapezoidal, which is convenient for clamping and separating the sealing groove 26 and the sealing protrusion 27. A second sealing gasket is fixedly connected to the outer surface of the sealing protrusion 27, so that the connection between the sealing protrusion 27 and the sealing groove 26 is tighter. The guide rod 28 and the through hole 29 are provided to improve the stability of the upper mold 3 in moving up and down.

[0041] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A fan controller air tightness detection device, comprising an operating table (1), characterized in that: A top plate (2) is provided on the top of the operating platform (1), a vertical plate is fixedly connected between the operating platform (1) and the top plate (2), and a mold structure is provided on the top of the operating platform (1); The mold structure comprises an upper mold (3) and a lower mold (4), wherein the upper mold (3) is arranged at the bottom of the top plate (2), a hydraulic rod (5) is fixedly connected between the upper mold (3) and the top plate (2), and the lower mold (4) is fixedly connected to the top of the operating table (1), and a first standard sample slot (6), a test sample slot (7) and a second standard sample slot (8) are sequentially opened on the top of the lower mold (4); The lower mold (4) is provided with a test structure, which includes a main air pipe (9), the main air pipe (9) is arranged at the front of the lower mold (4), the main air pipe (9) is provided with a main control valve (10) and a total pressure sensor (11), the first standard sample tank (6), the second standard sample tank (8) and the test sample tank (7) are respectively provided with a first branch air pipe (12), a second branch air pipe (13) and a third branch air pipe (14), the first branch air pipe (12), the second branch air pipe (13) and the third branch air pipe (14) are all connected to the main air pipe (9), the first branch air pipe (12), the second branch air pipe (13) and the third branch air pipe (14) are all provided with a branch control valve (15), the first branch air pipe (1 2) is provided with a first pressure sensor (16), the second branch air pipe (13) is provided with a second pressure sensor (17), the third branch air pipe (14) is provided with a third pressure sensor (18), a first connecting pipe (19) is connected between the first standard sample tank (6) and the test sample tank (7), the first connecting pipe (19) is provided with a first differential pressure sensor (20), a second connecting pipe (21) is connected between the test sample tank (7) and the second standard sample tank (8), the second connecting pipe (21) is provided with a second differential pressure sensor (22), a third connecting pipe (23) is connected between the first standard sample tank (6) and the second standard sample tank (8), the third connecting pipe (23) is provided with a third differential pressure sensor (24).

2. The fan controller air tightness detection device according to claim 1, characterized in that: A first sealing gasket (25) is fixedly connected to the bottom of the upper mold (3).

3. The fan controller air tightness detection device according to claim 2, characterized in that: A sealing groove (26) is provided on the top of the lower mold (4), and a sealing convex block (27) is fixedly connected to the bottom of the upper mold (3), and the sealing convex block (27) matches the sealing groove (26).

4. The fan controller air tightness detection device according to claim 3, characterized in that: The cross-sectional shapes of the sealing groove (26) and the sealing protrusion (27) are both set to be trapezoidal.

5. The fan controller air tightness detection device according to claim 4, characterized in that: A second sealing gasket is fixedly connected to the outer surface of the sealing protrusion (27).

6. The fan controller air tightness detection device according to claim 5, characterized in that: The first sealing gasket (25) and the second sealing gasket are both made of rubber material.

7. The fan controller air tightness detection device according to claim 1, characterized in that: Two guide rods (28) are fixedly connected between the lower mold (4) and the top plate (2), and through holes (29) are opened on both sides of the top of the upper mold (3), and the guide rods (28) are slidably connected to the through holes (29).

8. The fan controller air tightness detection device according to claim 1, characterized in that: Control switches are provided on both sides of the front of the operating table (1), and a touch screen (30) is provided on the top of the top plate (2).

Images