Liquid oil cold and hot impact test box

Abstract

The invention discloses a liquid oil cold and hot impact test box, and relates to the technical field of cold and hot impact tests. A liquid oil hot and cold shock test box comprises a driving device which is connected with a containing cage capable of being opened and closed. The electric oven further comprises at least two oil storage boxes, each oil storage box comprises an opening, each oil storage box is provided with an opening and closing assembly capable of opening and closing the opening, and each oil storage box is further connected with a heating device and / or a refrigerating device. The cold and hot alternating environment of the product is accurately simulated, so that the cold and hot impact test is performed.

Description

Technical Field

[0001] This application relates to the technical field of thermal shock testing, and in particular to a liquid oil thermal shock test chamber. Background Technology

[0002] In high-end manufacturing sectors such as electronic components, automotive parts, and aerospace materials, high and low temperature shock testing is a core testing method for verifying the reliability and stability of products under extreme temperature alternation conditions. Its core principle is to reproduce the drastic temperature change scenarios that products may encounter throughout their entire life cycle of warehousing, transportation, and service by rapidly switching temperature environments, providing key data support for product design optimization and quality control.

[0003] Currently, the mainstream technical solution for conducting high and low temperature shock tests in the industry is the air-circulating high and low temperature shock system. This system mainly consists of a high-temperature air duct, a low-temperature air duct, an airflow switching valve group, and a temperature control module. A high-speed fan drives the alternating delivery of high-temperature and low-temperature gases to the test chamber, achieving temperature shock to the tested product. This technology has been widely adopted in fields such as consumer electronics and conventional automotive parts testing due to its advantages, including simple overall equipment structure, relatively low manufacturing cost, and adaptability to irregularly shaped and large-volume samples.

[0004] However, designers of the aforementioned technologies have found that, on the one hand, due to the extremely low specific heat capacity of air, its heat transfer efficiency is inherently limited. It cannot meet the stringent testing requirements of rapid temperature changes and high-precision temperature control for core components in military electronics and aerospace industries. Furthermore, it is difficult to create a uniform temperature field within the test chamber, easily leading to excessive temperature differences between the chamber's edges and center, directly increasing the dispersion of test data and failing to accurately reflect the product's true tolerance capabilities. On the other hand, the thermal convection characteristics of air are easily affected by the chamber structure and sample placement. The switching between hot and cold airflows easily creates localized turbulence, making it difficult to accurately reproduce the stable hot-cold alternation environment during actual service. This results in deviations between test conditions and real-world conditions, failing to provide effective data support for the performance evaluation of high-reliability products. Therefore, existing methods of testing products using hot and cold air impacts cannot accurately simulate the product's hot-cold alternation environment. Summary of the Invention

[0005] In order to accurately simulate the alternating hot and cold environment of a product, this application provides a liquid oil thermal shock test chamber.

[0006] The liquid oil thermal shock test chamber provided in this application adopts the following technical solution: A liquid oil thermal shock test chamber includes a drive unit connected to a receiving cage with a discharge port; it also includes at least two oil storage boxes, each of which has an opening and is equipped with an opening and closing component capable of opening and closing the opening, and each of which is further connected to a heating device and / or a cooling device.

[0007] By adopting the above technical solution and using liquid oil as the temperature transfer medium, compared with the traditional air medium, liquid oil has a higher specific heat capacity and stronger heat transfer efficiency, which can realize rapid temperature change of the tested product and meet the stringent test indicators of core components in military electronics and aerospace. At the same time, at least two oil storage boxes can form high-temperature oil bath and low-temperature oil bath environments through heating and cooling devices, respectively. The drive device drives the housing cage to switch between different oil storage boxes in coordination with the opening and closing components of the oil storage boxes. This can not only realize the precise alternation of the product in the hot and cold oil bath environment, but also ensure the stability and uniformity of the temperature field in the oil storage box, greatly reduce the dispersion of test data, and accurately simulate the hot and cold alternation environment of the product.

[0008] Preferably, the driving device includes a lateral driving member, a vertical driving member connected to the lateral driving member, and a base connected to the vertical driving member, wherein the housing cage is detachably connected to the base.

[0009] By adopting the above technical solution, the horizontal drive component can realize the horizontal displacement switching of the storage cage between different oil storage boxes, and the vertical drive component can complete the lifting and lowering action of the storage cage. The two work together to achieve precise positioning of the storage cage in space to ensure that the product can stably enter or leave the oil storage box.

[0010] Preferably, both the lateral drive component and the vertical drive component are one of the following: a pneumatic cylinder, a hydraulic cylinder, an electric cylinder, a gear and rack module, a lead screw drive module, a belt drive module, or a sprocket and chain module.

[0011] Preferably, the base has a connecting hole, the housing cage has a connecting groove, and the connecting hole and the connecting groove are detachably connected to a fastener.

[0012] By adopting the above technical solution, the detachable connection between the housing cage and the base is achieved using fasteners. The connection structure is simple and stable. On the one hand, it can quickly complete the disassembly and replacement of the housing cage, improving the efficiency of the test preparation stage. On the other hand, the fastener connection method has high connection strength, which can prevent the housing cage from shaking or falling off during the driving process, ensuring the stability and safety of the test process.

[0013] Preferably, it includes a frame; the opening and closing assembly includes an opening and closing plate, the frame is provided with a rotating shaft, the opening and closing plate is rotatably connected to the rotating shaft, and a torsion spring is connected between the opening and closing plate and the rotating shaft.

[0014] By adopting the above technical solution, when the containment cage is not in the oil storage box, the torsion spring can ensure that the opening and closing plate closes the opening, which can ensure the stability of the liquid oil temperature in the oil storage box, reduce temperature loss, and maintain the uniformity of the oil bath environment. When the containment cage needs to enter the oil storage box, the opening can be opened by pressing the opening and closing plate around the rotating shaft with external force. The overall structure does not require an additional power source to control the opening and closing of the opening and closing plate.

[0015] Preferably, the drive device is further connected to a pressing member for pressing against the opening and closing plate.

[0016] By adopting the above technical solution, the pressing component can move synchronously with the receiving cage. When the receiving cage moves down to the opening of the oil storage box, the pressing component can automatically press against the opening and closing plate to open the opening, without the need for an additional drive mechanism for the opening and closing plate.

[0017] Preferably, the pressing member includes a limiting ring, which is arranged around the receiving cage, and the limiting ring includes a protrusion near the opening and closing plate.

[0018] By adopting the above technical solution, the limiting ring is set around the receiving cage, and its protrusion can accurately press against the opening and closing plate to realize the stable opening of the oil storage box.

[0019] Preferably, the frame is provided with heat insulation columns, the oil storage box is connected to the frame through the heat insulation columns, and an isolation cavity is formed between the oil storage box and the frame.

[0020] By adopting the above technical solutions, the heat insulation column can block the heat transfer between the oil storage box and the frame, prevent the high or low temperature inside the oil storage box from being lost through the frame, and maintain the temperature stability of the oil bath environment; the isolation cavity can form an air insulation layer, further improving the heat insulation effect.

[0021] Preferably, each of the oil storage boxes is connected to a mounting shaft extending into the oil storage box, the mounting shaft is connected to a stirring impeller, and the mounting shaft is also connected to a drive component.

[0022] By adopting the above technical solution, the drive component can drive the mounting shaft to rotate the stirring impeller to achieve uniform stirring of the liquid oil in the oil storage box, avoid local temperature differences in the liquid oil, ensure the formation of a uniform temperature field in the oil storage box, and improve the accuracy of test data; at the same time, the stirring action can accelerate the temperature conduction of the liquid oil, enabling the liquid oil to reach the set test temperature more quickly, shorten the test preparation time, and improve the overall test efficiency.

[0023] In summary, the present invention has at least one of the following beneficial technical effects: 1. Using liquid oil as a temperature transfer medium, compared to traditional air, liquid oil has a higher specific heat capacity and stronger heat transfer efficiency, enabling rapid temperature changes in the tested product and meeting the stringent test requirements of core components in military electronics and aerospace. At the same time, at least two oil storage boxes can form high-temperature oil bath and low-temperature oil bath environments respectively through heating and cooling devices. The drive device moves the housing cage to switch between different oil storage boxes in coordination with the opening and closing components of the oil storage boxes. This not only enables precise alternation of the product in hot and cold oil bath environments, but also ensures the stability and uniformity of the temperature field within the oil storage boxes, significantly reducing the dispersion of test data and accurately simulating the hot and cold alternation environment of the product. 2. When the containment cage is not in the oil storage box, the torsion spring can ensure that the opening and closing plate is closed, which can ensure the stable temperature of the liquid oil in the oil storage box, reduce temperature loss, and maintain the uniformity of the oil bath environment. When the containment cage needs to enter the oil storage box, the opening can be opened by pressing the opening and closing plate around the rotating shaft through the pressing part. The overall structure does not require an additional power source to control the opening and closing of the opening and closing plate. 3. The heat insulation column can block the heat transfer between the oil reservoir and the frame, preventing the high or low temperature inside the oil reservoir from being lost through the frame and maintaining the temperature stability of the oil bath environment; the isolation cavity can form an air insulation layer, further improving the heat insulation effect. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a liquid oil thermal shock test chamber according to an embodiment of this application; Figure 2 This is a cross-sectional view of a liquid oil thermal shock test chamber; Figure 3 This is a structural diagram used to illustrate the containment cage; Figure 4 This is a structural diagram used to illustrate the opening and closing components; Figure 5 yes Figure 2 Enlarged view of section A.

[0025] The following are labels in the attached diagram: 1. Frame; 11. Insulation column; 12. Isolation chamber; 2. Drive unit; 21. Horizontal drive component; 22. Vertical drive component; 23. Base; 3. Receiving cage; 31. Discharge port; 32. Connecting groove; 33. Fastener; 4. Oil storage box; 41. Opening; 42. Opening and closing assembly; 421. Opening and closing plate; 422. Rotating shaft; 5. Pressing component; 51. Limiting ring; 511. Protrusion; 6. Mounting shaft; 61. Agitator impeller; 62. Drive component. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 limiting this invention.

[0028] This application discloses a liquid oil thermal shock test chamber. It is used to accurately simulate the alternating hot and cold environment of a product to conduct thermal shock tests.

[0029] Reference Figure 1 and Figure 2 A liquid oil thermal shock test chamber includes a frame 1, on which a drive unit 2 is mounted, combined with... Figure 3 The drive device 2 is connected to a receiving cage 3 with a discharge port 31, and the drive device 2 can drive the receiving cage 3 to move horizontally and vertically. A liquid oil thermal shock test chamber also includes at least two oil storage boxes 4. In this embodiment, there are two oil storage boxes 4. Each oil storage box 4 includes an opening 41 at the top, and each oil storage box 4 is equipped with an opening / closing component 42 capable of opening and closing the opening 41. Each oil storage box 4 is also connected to a heating device and / or a cooling device, as well as a temperature sensor to facilitate temperature control. In this embodiment, the left oil storage box 4 is connected to a heating device, and the right oil storage box 4 is connected to a cooling device. In other embodiments, a single oil storage box 4 can also be connected to both a heating device and a cooling device simultaneously. Specifically, the heating device may be, for example, an electric heating oil heater or an electromagnetic induction heater, and the cooling device may be, for example, an oil cooler or a liquid nitrogen indirect cooling system. The specific structures of the heating and cooling devices are existing technologies and will not be described in detail here. The liquid oil medium used in this application includes, for example, perfluoropolyether, silicone oil, and synthetic heat transfer oil.

[0030] In this embodiment, a heating device and a cooling device are first used to create a high-temperature oil bath and a low-temperature oil bath environment in the two oil storage boxes 4 respectively. The product is placed in the housing cage 3, and the driving device 2 is driven to move the housing cage 3 into the two oil storage boxes 4 at a certain rhythm, thereby realizing the precise alternation of the product in the hot and cold oil bath environment, thus completing the thermal shock test.

[0031] Using liquid oil as a temperature transfer medium, compared with traditional air, liquid oil has a higher specific heat capacity and stronger heat transfer efficiency. Liquid oil can achieve rapid temperature changes of the test product, and the temperature of liquid oil can be easily and accurately controlled.

[0032] In other embodiments, more oil storage boxes 4 and related structures can be set to obtain more application scenarios. For example, by setting four oil storage boxes 4 and setting the liquid oil temperature in the four oil storage boxes 40°C, 25°C, 20°C, and 60°C respectively, products such as chips can be sequentially placed into the four oil storage boxes 4 to simulate scenarios of high temperature storage, medium temperature transportation, low temperature outdoor conditions in northern winters, and high temperature operation of equipment. As another example, by setting five oil storage boxes 4 and setting the liquid oil temperature in the five oil storage boxes 4 to -30°C, -10°C, 25°C, 45°C, and 10°C respectively, products such as new energy electric vehicle batteries can be sequentially placed into the five oil storage boxes 4 to simulate scenarios of low temperature start-up, low-speed driving temperature rise, high-speed driving temperature rise, fast charging heat generation, and parking cooling.

[0033] Because this application generates low energy consumption for creating hot and cold environments, it is also suitable for long-term thermal shock tests, such as tests on certain polar research equipment.

[0034] Reference Figure 1 and Figure 2 The driving device 2 includes a horizontal driving member 21, a vertical driving member 22 connected to the horizontal driving member 21, and a base 23 connected to the vertical driving member 22. The housing 3 is detachably connected to the base 23. Both the horizontal driving member 21 and the vertical driving member 22 are one of a cylinder, a hydraulic cylinder, an electric cylinder, a gear and rack module, a screw drive module, a belt drive module, or a sprocket and chain module. In this embodiment, both the horizontal driving member 21 and the vertical driving member 22 are cylinders.

[0035] Reference Figure 1 and Figure 3 The base 23 has a connecting hole, and the housing 3 has a connecting groove 32. The connecting hole and the connecting groove 32 are detachably connected to a fastener 33, such as a claw bolt. The fastener 33 enables a detachable connection between the housing 3 and the base 23. The connection structure is simple and stable. On the one hand, it allows for quick disassembly and replacement of the housing 3, facilitating maintenance and product loading and unloading. On the other hand, the fastener 33 provides high connection strength, preventing the housing 3 from shaking or falling off during operation, ensuring the stability and safety of the test process.

[0036] Reference Figure 4 and Figure 5Taking one of the opening and closing components 42 as an example: the opening and closing component 42 includes an opening and closing plate 421. In this embodiment, there are two opening and closing plates 421, and two rotating shafts 422 are provided on the frame 1. Each opening and closing plate 421 is rotatably connected to a rotating shaft 422, and a torsion spring is connected between the opening and closing plate 421 and the rotating shaft 422. The two opening and closing plates 421 can rotate to contact each other to close the opening 41 or rotate to separate to open the opening 41. When the receiving cage 3 is not in the oil storage box 4, the torsion spring can ensure that the opening and closing plate 421 closes the opening 41, which can ensure the stability of the liquid oil temperature in the oil storage box 4 and maintain the uniformity of the oil bath environment.

[0037] When the containment cage 3 needs to enter the oil storage box 4, the opening 41 can be opened by pressing the opening and closing plate 421 around the rotating shaft 422 with external force. The overall structure does not require an additional power source to control the opening and closing of the opening and closing plate 421.

[0038] Reference Figure 3 and Figure 4 The base 23 is also connected to a pressing member 5 for pressing against the opening and closing plate 421; the pressing member 5 includes a limiting ring 51, and there are two limiting rings 51 in this embodiment. Each limiting ring 51 is arranged around the receiving cage 3. Each limiting ring 51 includes a protrusion 511 near the opening and closing plate 421. The protrusion 511 is used to press against the opening and closing plate 421 to drive the opening and closing plate 421 to rotate. The limiting ring 51 also has the function of limiting the receiving cage 3 to prevent the receiving cage 3 from falling.

[0039] By driving the horizontal drive component 21 and the vertical drive component 22, the receiving cage 3 can be moved horizontally and raised and lowered. After the receiving cage 3 can move, it drives the limiting ring 51 to move, so that the protrusion 511 presses against the two opening and closing plates 421, causing the two opening and closing plates 421 to separate, thus facilitating the receiving cage 3 to enter the oil storage box 4.

[0040] Reference Figure 2 To prevent heat conduction from the oil storage box 4, a heat insulation column 11 is provided on the frame 1. The oil storage box 4 is connected to the frame 1 through the heat insulation column 11, and an isolation cavity 12 is formed between the oil storage box 4 and the frame 1. The heat insulation column 11 and the isolation cavity 12 can block heat transfer between the oil storage box 4 and the frame 1, prevent the high temperature or low temperature inside the oil storage box 4 from being lost through the frame 1, and maintain the temperature stability of the oil bath environment.

[0041] Reference Figure 2 and Figure 4 In order to ensure uniform oil temperature, each oil storage box 4 is connected to an installation shaft 6 extending into the oil storage box 4. An agitator impeller 61 is connected to the installation shaft 6, and a drive component 62, such as a motor, is also connected to the installation shaft 6.

[0042] This application can simulate many types of thermal shock test scenarios with a relatively simple structural setup, which is not only time-saving and labor-saving but also low-cost.

[0043] The implementation principle of the liquid oil thermal shock test chamber in this application embodiment is as follows: First, heating and cooling devices are used to create high-temperature and low-temperature oil bath environments in the two oil storage boxes 4 respectively. The receiving cage 3 is disassembled and the product is placed in the receiving cage 3 through the discharge port 31. The receiving cage 3 is reinstalled, and the horizontal drive component 21 and the vertical drive component 22 are driven to move the receiving cage 3 into the two oil storage boxes 4 at a certain rhythm, thereby realizing the precise alternation of the product in the hot and cold oil bath environment, thus completing the thermal shock test.

[0044] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A liquid oil thermal shock test chamber, characterized in that: The device includes a drive unit (2) connected to a receiving cage (3) having a discharge port (31); it also includes at least two oil storage boxes (4), each of which includes an opening (41) and each of which is equipped with an opening and closing component (42) capable of opening and closing the opening (41), and each of which is also connected to a heating device and / or a cooling device.

2. The liquid oil thermal shock test chamber according to claim 1, characterized in that: The drive device (2) includes a horizontal drive member (21), a vertical drive member (22) connected to the horizontal drive member (21), and a base (23) connected to the vertical drive member (22). The receiving cage (3) is detachably connected to the base (23).

3. The liquid oil thermal shock test chamber according to claim 2, characterized in that: Both the lateral drive component (21) and the vertical drive component (22) are one of the following: cylinder, hydraulic cylinder, electric cylinder, gear and rack module, screw drive module, belt drive module, or sprocket and chain module.

4. The liquid oil thermal shock test chamber according to claim 2, characterized in that: The base (23) has a connection hole, and the housing (3) has a connection groove (32). The connection hole and the connection groove (32) are detachably connected to a fastener (33).

5. The liquid oil thermal shock test chamber according to claim 1, characterized in that: The assembly includes a frame (1); the opening and closing assembly (42) includes an opening and closing plate (421), the frame (1) is provided with a rotating shaft (422), the opening and closing plate (421) is rotatably connected to the rotating shaft (422), and a torsion spring is connected between the opening and closing plate (421) and the rotating shaft (422).

6. The liquid oil thermal shock test chamber according to claim 5, characterized in that: The drive device (2) is also connected to a pressing member (5) for pressing against the opening and closing plate (421).

7. The liquid oil thermal shock test chamber according to claim 6, characterized in that: The pressing member (5) includes a limiting ring (51) which surrounds the receiving cage (3) and includes a protrusion (511) near the opening and closing plate (421).

8. A liquid oil thermal shock test chamber according to claim 5, characterized in that: The frame (1) is provided with heat insulation column (11), and the oil storage box (4) is connected to the frame (1) through the heat insulation column (11). An isolation cavity (12) is formed between the oil storage box (4) and the frame (1).

9. A liquid oil thermal shock test chamber according to claim 1, characterized in that: Each of the oil storage boxes (4) is connected to an installation shaft (6) extending into the oil storage box (4), and an agitator (61) is connected to the installation shaft (6), and a drive component (62) is also connected to the installation shaft (6).

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