High and low temperature test chamber for electronic product test

Abstract

The utility model discloses a kind of high-low temperature test box for electronic product test, including test box, the side hinged of test box has cabinet door, the bottom of test box is fixedly connected with control box, controller is fixedly installed on control box, installation plate is fixedly installed in test box, ventilation slot is opened in installation plate, the side fixedly connected of installation plate has placing plate, the side fixedly installed of test box has heat dissipation box, the side fixedly connected of heat dissipation box has air inlet tube, fan is fixedly installed in air inlet tube, filter screen is fixedly connected on air inlet tube, the other side of heat dissipation box is equipped with air outlet, the air outlet is connected with air inlet tube.In the utility model, the experimental box after high-temperature test is cooled down quickly, which facilitates low-temperature test after high-temperature test, shortens the high-low temperature test cycle of electronic product, and improves the efficiency of electronic product test.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment, specifically to a high and low temperature test chamber for testing electronic products. Background Technology

[0002] High and low temperature test chambers are testing equipment used to simulate high and low temperature environments. They are widely used in electronics, electrical appliances, automobiles, aerospace, materials, scientific research and other fields. They are mainly used to test the performance, reliability and stability of products or materials under extreme temperature conditions.

[0003] To further understand the existing high and low temperature test chambers, a search revealed Chinese Patent No. CN219186966U, which discloses a high and low temperature test chamber, including a chamber body. The chamber body contains a high and low temperature test chamber with a door on its exterior. A maintenance door is hinged to the side of the chamber body away from the test chamber. A dustproof mechanism is located inside the chamber body near the maintenance door. The dustproof mechanism includes a mounting frame with limit grooves on both sides. Limit plates are slidably connected inside the limit grooves. A spring assembly is fixedly connected between the inner wall of the limit groove near the center of the mounting frame and the limit plate. Double-layer mesh frames are fixedly connected to the top and bottom of the mounting frame, and movable mesh frames are slidably connected inside the double-layer mesh frames.

[0004] After exploration and analysis, the patent has the following drawbacks in actual use: Although the patent uses multiple sets of magnetic connections between the inspection door and the movable mesh frame, a rectangular maintenance window can be quickly formed by simply opening the inspection door and pushing the two movable mesh frames during maintenance. The operation is simple and quick, making it convenient for staff to maintain the high and low temperature test chamber regularly. However, like traditional test chambers, when conducting high-temperature tests on electronic products and then continuing with low-temperature tests, the chamber door needs to be opened to cool the chamber to room temperature before conducting low-temperature tests. The cooling efficiency is low because it only relies on heat exchange between the inside and outside of the chamber, which is not conducive to shortening the test cycle and improving test efficiency. Utility Model Content

[0005] To address the problem that existing technologies rely solely on heat exchange between the internal and external gases to achieve low cooling efficiency after high-temperature testing, which hinders the shortening of testing cycles and the improvement of testing efficiency, this utility model provides a high and low temperature test chamber for testing electronic products.

[0006] The technical solution adopted by this utility model is as follows: It includes a test chamber, a door hinged to one side of the test chamber, a control box fixedly connected to the bottom of the test chamber, a controller fixedly installed on the control box, an installation plate fixedly installed inside the test chamber, a ventilation slot provided on the installation plate, a placement plate fixedly connected to one side of the installation plate, a heat dissipation box fixedly installed on one side of the test chamber, an air inlet duct fixedly connected to one side of the heat dissipation box, a fan fixedly installed inside the air inlet duct, a filter fixedly connected to the air inlet duct, an air outlet opening on the other side of the heat dissipation box, the air outlet communicating with the air inlet duct, and a sealing mechanism provided inside the heat dissipation box.

[0007] Furthermore, the sealing mechanism includes a storage chamber opened in the heat dissipation box, a ventilation chamber opened in the heat dissipation box, and a sealing plate slidably installed in the storage chamber. The storage chamber is connected to the ventilation chamber, and the position of the ventilation chamber corresponds to the air outlet.

[0008] By adopting the above technical solutions, the experimental chamber is guaranteed to be sealed during operation and ventilated during heat dissipation.

[0009] Furthermore, the heat dissipation box is provided with an installation groove, in which a slider is slidably connected. Connecting rods are rotatably installed on both sides of the slider, and the end of the connecting rod away from the slider is rotatably connected to the sealing plate.

[0010] By adopting the above technical solution, the slider, in conjunction with the connecting rod, drives the sealing plate to move.

[0011] Furthermore, a drive motor is fixedly installed on the heat sink, and a lead screw is coaxially fixedly connected to the drive shaft of the drive motor. The lead screw is rotatably installed in the mounting groove, and the lead screw is threadedly connected to the slider.

[0012] By adopting the above technical solution, the drive motor works in conjunction with the lead screw to move the slider.

[0013] Furthermore, the upper and lower walls of the storage chamber and the ventilation chamber are provided with sealing grooves, and sealing strips are fixedly installed at both ends of the sealing plate. The sealing strips are slidably installed in the sealing grooves, and a sealing gasket is fixedly connected to one side of the sealing plate.

[0014] By adopting the above technical solutions, the sealing performance of the sealing plate is improved.

[0015] Furthermore, a liquid storage tank is fixedly connected to the rear end of the control box, and two sets of liquid inlet pipes are fixedly connected to the liquid storage tank. One end of each set of liquid inlet pipes is fixedly connected to a heat dissipation pipe. The heat dissipation pipe is fixedly installed on the inner side wall of the test chamber. One end of the heat dissipation pipe is fixedly connected to a cooling pipe. The cooling pipe is fixedly installed on one side of the heat dissipation box, and one end of the cooling pipe is fixedly connected to an outlet pipe. The outlet pipe is fixedly installed on the liquid storage tank.

[0016] By adopting the above technical solution, the heat dissipation effect of the experimental chamber is improved.

[0017] The beneficial effects of this utility model are: by combining the experimental chamber with the heat dissipation box, air inlet, fan, filter, air outlet and mounting plate, the speed at which the experimental chamber cools down to room temperature after high temperature testing is accelerated, which facilitates rapid low temperature testing of electronic products, shortens the experimental cycle and improves testing efficiency. The heat dissipation box, combined with the drive motor, lead screw, slider, connecting rod and sealing plate, allows the experimental chamber to maintain its internal sealing and heat dissipation while communicating with the outside world, which improves the practicality of the heat dissipation box.

[0018] By using a liquid storage tank in conjunction with an inlet pipe, heat dissipation pipe, cooling pipe, and outlet pipe, the flow of cold liquid drives the heat in the experimental chamber, further improving the cooling efficiency of the experimental chamber after high-temperature testing, thereby further shortening the experimental cycle and improving the practicality of the experimental chamber. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the test chamber in this utility model;

[0021] Figure 3 This is a cross-sectional structural diagram of the test chamber in this utility model;

[0022] Figure 4 This is a front view of the heat sink in this utility model.

[0023] Figure 5 This is a schematic diagram of the rear structure of the heat sink in this utility model;

[0024] Figure 6 This is a cross-sectional structural diagram of the heat dissipation box in this utility model;

[0025] Figure 7 This is a schematic diagram of the assembly of the sealing plate and the heat sink in this utility model.

[0026] The diagram is labeled as follows: 1. Test chamber; 2. Chamber door; 3. Control box; 4. Controller; 5. Heat sink; 6. Placement plate; 7. Mounting plate; 8. Ventilation slot; 9. Air inlet duct; 10. Fan; 11. Filter screen; 12. Air outlet; 13. Mounting slot; 14. Storage chamber; 15. Ventilation chamber; 16. Sealing plate; 17. Lead screw; 18. Slider; 19. Connecting rod; 20. Drive motor; 21. Sealing groove; 22. Sealing strip; 23. Sealing gasket; 24. Heat dissipation pipe; 25. Cooling pipe; 26. Liquid storage tank; 27. Liquid inlet pipe; 28. Liquid outlet pipe. Detailed Implementation

[0027] In the description of this utility model, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", 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.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The following is in conjunction with the appendix Figure 1 -Appendix Figure 7 The present invention will be further described below.

[0030] To address the problems existing in the background technology, this application proposes the following technical solution: A test chamber 1 is included, with a door 2 hinged to one side of the test chamber 1. A control box 3 is fixedly connected to the bottom of the test chamber 1, and a controller 4 is fixedly installed on the control box 3. An installation plate 7 is fixedly installed inside the test chamber 1, with ventilation slots 8 on the installation plate 7. A placement plate 6 is fixedly connected to one side of the installation plate 7. A heat dissipation box 5 is fixedly installed on one side of the heat dissipation box 1, with an air inlet duct 9 fixedly connected to one side of the heat dissipation box 5. A fan 10 is fixedly installed inside the air inlet duct 9, and a filter screen 11 is fixedly connected to the air inlet duct 9. An air outlet 12 is opened on the other side of the heat dissipation box 5, and the air outlet 12 communicates with the air inlet duct 9. A sealing mechanism is provided inside the heat dissipation box 5.

[0031] After opening chamber door 2, place the electronic product on placement plate 6. Mounting plate 7 provides mounting conditions for placement plate 6. Placement plate 6 features a mesh-like perforated design to reduce thermal resistance, ensure smooth air circulation, and avoid localized temperature deviations. Rounded edges reduce gas turbulence and improve temperature uniformity. After closing chamber door 2, controller 4 heats the interior of test chamber 1 to conduct high-temperature testing on the electronic product. After the high-temperature test, opening chamber door 2 allows heat exchange between the interior of test chamber 1 and the outside environment through gas, thereby cooling the interior of test chamber 1 and the electronic product. Simultaneously, fan 10 draws outside air into air inlet duct 9 and then... Air is blown out from the air outlet 12. The air passes through the ventilation slot 8 and the interior of the test chamber 1 in sequence and then blows out from the opening of the test chamber 1. The fan 10 accelerates the circulation of hot air inside the test chamber 1 and the heat exchange with the outside air, improving the cooling efficiency of the test chamber 1 and electronic products after high-temperature testing. This facilitates rapid low-temperature testing of electronic products, shortens the experimental cycle, and improves testing efficiency. The filter 11 is set to prevent external dust from entering the test chamber 1 with the wind and affecting the normal use of the test chamber 1. The sealing mechanism keeps the interior of the test chamber 1 sealed when it is working and keeps it connected to the outside when dissipating heat. The controller 4 adopts a PID temperature controller.

[0032] To further explain, the sealing mechanism includes a storage chamber 14 opened in the heat dissipation box 5, a ventilation chamber 15 opened in the heat dissipation box 5, and a sealing plate 16 slidably installed in the storage chamber 14. The storage chamber 14 is connected to the ventilation chamber 15, and the position of the ventilation chamber 15 corresponds to the air outlet 12.

[0033] The sealing plate 16 can move between the storage chamber 14 and the ventilation chamber 15. When the test chamber 1 needs to test electronic products, the sealing plate 16 moves to the ventilation chamber 15 to block the air outlet 12. The air outlet 12 is no longer connected to the outside through the air inlet duct 9, so that the interior of the test chamber 1 remains closed during testing, maintaining the stability of the experimental environment and ensuring the accuracy of the experimental results. After the high-temperature test is completed, the sealing plate 16 moves to the storage chamber 14, and the air outlet 12 is connected to the air inlet duct 9 through the ventilation chamber 15, so that the interior of the test chamber 1 is connected to the outside and the air flows, accelerating the cooling of the test chamber 1 to room temperature, which is convenient for subsequent low-temperature testing of electronic products.

[0034] Furthermore, the heat sink 5 has an installation slot 13, in which a slider 18 is slidably connected. Connecting rods 19 are rotatably installed on both sides of the slider 18, and the end of the connecting rod 19 away from the slider 18 is rotatably connected to the sealing plate 16.

[0035] The movement of slider 18 in mounting groove 13 drives the movement of sealing plate 16 in storage chamber 14 or ventilation chamber 15. When slider 18 moves upward in mounting groove 13, slider 18 drives connecting rod 19 to move upward. Connecting rod 19 pulls sealing plate 16 to move it from ventilation chamber 15 to storage chamber 14. When slider 18 moves downward in mounting groove 13, slider 18 drives connecting rod 19 to move downward. Connecting rod 19 pushes sealing plate 16 to move it from storage chamber 14 to ventilation chamber 15. Connecting rod 19 is rotatably connected to slider 18 and sealing plate 16 through hinge seats.

[0036] To further explain, a drive motor 20 is fixedly installed on the heat sink 5, and a lead screw 17 is coaxially fixedly connected to the drive shaft of the drive motor 20. The lead screw 17 is rotatably installed in the mounting groove 13, and the lead screw 17 is threadedly connected to the slider 18.

[0037] The drive motor 20 drives the lead screw 17 to rotate, and the lead screw 17 pushes the slider 18 to move on it. Through the forward and reverse rotation of the drive motor 20, the slider 18 moves up and down in the mounting groove 13, thereby driving the sealing plate 16 to move. Both the slider 18 and the mounting groove 13 are rectangular and the two sets fit tightly together (as shown in the attached figure). Figure 7 As shown in the figure, the mounting groove 13 guides and limits the movement of the slider 18, preventing the slider 18 from flipping over when the lead screw 17 rotates, and improving the stability of the slider 18 when it moves up and down.

[0038] Furthermore, the upper and lower walls of the storage chamber 14 and the ventilation chamber 15 are provided with sealing grooves 21, and sealing strips 22 are fixedly installed at both ends of the sealing plate 16. The sealing strips 22 are slidably installed in the sealing grooves 21, and a sealing gasket 23 is fixedly connected to one side of the sealing plate 16.

[0039] The sealing strip 22, in conjunction with the sealing groove 21, guides and limits the movement of the sealing plate 16, allowing the sealing plate 16 to move stably within the storage chamber 14 and the ventilation chamber 15. Both the sealing strip 22 and the sealing gasket 23 are made of elastic material, which enhances the sealing performance of the sealing plate 16. An oil injection hole (not shown in the attached diagram) is provided on the heat dissipation box 5, through which lubricating oil can be added to the sealing strip 22. The lubricating oil material is compatible with the sealing strip 22, reducing friction, extending the sealing life, and improving sealing performance.

[0040] Furthermore, a liquid storage tank 26 is fixedly connected to the rear end of the control box 3. Two sets of liquid inlet pipes 27 are fixedly connected to the liquid storage tank 26. A heat dissipation pipe 24 is fixedly connected to one end of each of the two sets of liquid inlet pipes 27. The heat dissipation pipe 24 is fixedly installed on the inner side wall of the test chamber 1. A cooling pipe 25 is fixedly connected to one end of the heat dissipation pipe 24. The cooling pipe 25 is fixedly installed on one side of the heat dissipation box 5. An outlet pipe 28 is fixedly connected to one end of the cooling pipe 25. The outlet pipe 28 is fixedly installed on the liquid storage tank 26.

[0041] The storage tank 26 contains coolant and is equipped with a circulation pump (not shown in the attached diagram). The circulation pump delivers the coolant to the heat dissipation pipe 24 through the inlet pipe 27. The hot air in the test chamber 1 transfers heat to the coolant through the heat dissipation pipe 24. The coolant flows through the heat dissipation pipe 24, carrying away some of the heat in the test chamber 1. The heated coolant flows through the heat dissipation pipe 24 to the cooling pipe 25. The air generated by the fan 10 blows through the air outlet 12 across the cooling pipe 25, carrying away some of its temperature and lowering the coolant temperature. The cooled coolant flows back into the storage tank 26 through the outlet pipe 28 for circulation. Both the heat dissipation pipe 24 and the cooling pipe 25 are arranged in a "serpentine" shape to increase the contact area and time with the air, thereby improving the heat dissipation effect. The fan 10, in conjunction with the heat dissipation pipe 24, further improves the heat dissipation efficiency of the test chamber 1.

[0042] For specific operation, please refer to the following instructions: After opening the chamber door 2, place the electronic product on the placement plate 6. After closing the chamber door 2, use the controller 4 to heat up the inside of the test chamber 1 to conduct a high-temperature test on the electronic product. After the high-temperature test is completed, open the chamber door 2 and simultaneously drive the motor 20 to rotate the lead screw 17. The lead screw 17 pushes the slider 18 upward, and the slider 18 drives the connecting rod 19 upward. The connecting rod 19 pulls the sealing plate 16 to move it from the ventilation chamber 15 to the storage chamber 14. At this time, the air outlet 12, the ventilation chamber 15 and the air inlet duct 9 are connected. The fan 10 works to accelerate the airflow. The air passes through the air inlet duct 9, the ventilation chamber 15, the air outlet 12, the ventilation slot 8 and the inside of the test chamber 1 in sequence, carrying away the heat from the test chamber 1 and the electronic product, so that the test chamber 1 is quickly cooled to room temperature, which is convenient for subsequent low-temperature tests on the electronic product.

[0043] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0044] Although embodiments of the present invention have been shown and described, the scope of the present invention will be defined by the appended claims and their equivalents for those skilled in the art.

Claims

1. A high and low temperature test chamber for testing electronic products, characterized in that, The test chamber (1) includes a door (2) hinged to one side of the test chamber (1), a control box (3) fixedly connected to the bottom of the test chamber (1), a controller (4) fixedly installed on the control box (3), an installation plate (7) fixedly installed in the test chamber (1), a ventilation slot (8) is provided on the installation plate (7), a placement plate (6) is fixedly connected to one side of the installation plate (7), a heat sink (5) is fixedly installed on one side of the test chamber (1), an air inlet (9) is fixedly connected to one side of the heat sink (5), a fan (10) is fixedly installed in the air inlet (9), a filter screen (11) is fixedly connected to the air inlet (9), an air outlet (12) is provided on the other side of the heat sink (5), the air outlet (12) is connected to the air inlet (9), and a sealing mechanism is provided in the heat sink (5).

2. The high and low temperature test chamber for testing electronic products according to claim 1, characterized in that, The sealing mechanism includes a storage chamber (14) opened in the heat dissipation box (5), a ventilation chamber (15) opened in the heat dissipation box (5), and a sealing plate (16) slidably installed in the storage chamber (14). The storage chamber (14) is connected to the ventilation chamber (15), and the position of the ventilation chamber (15) corresponds to the air outlet (12).

3. The high and low temperature test chamber for testing electronic products according to claim 2, characterized in that, The heat dissipation box (5) has an installation groove (13) and a slider (18) is slidably connected in the installation groove (13). A connecting rod (19) is rotatably installed on both sides of the slider (18). The end of the connecting rod (19) away from the slider (18) is rotatably connected to the sealing plate (16).

4. The high and low temperature test chamber for testing electronic products according to claim 3, characterized in that, A drive motor (20) is fixedly installed on the heat sink (5). A lead screw (17) is coaxially fixedly connected to the drive shaft of the drive motor (20). The lead screw (17) is rotatably installed in the mounting groove (13). The lead screw (17) is threadedly connected to the slider (18).

5. A high and low temperature test chamber for testing electronic products according to claim 4, characterized in that, The upper and lower walls of the storage chamber (14) and the ventilation chamber (15) are provided with sealing grooves (21). The upper and lower ends of the sealing plate (16) are fixedly installed with sealing strips (22). The sealing strips (22) are slidably installed in the sealing grooves (21). A sealing gasket (23) is fixedly connected to one side of the sealing plate (16).

6. A high and low temperature test chamber for testing electronic products according to claim 5, characterized in that, The control box (3) is fixedly connected to a liquid storage tank (26) at its rear end. Two sets of liquid inlet pipes (27) are fixedly connected to the liquid storage tank (26). One end of each of the two sets of liquid inlet pipes (27) is fixedly connected to a heat dissipation pipe (24). The heat dissipation pipe (24) is fixedly installed on the inner side wall of the test chamber (1). One end of the heat dissipation pipe (24) is fixedly connected to a cooling pipe (25). The cooling pipe (25) is fixedly installed on one side of the heat dissipation box (5). One end of the cooling pipe (25) is fixedly connected to an outlet pipe (28). The outlet pipe (28) is fixedly installed on the liquid storage tank (26).

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