A two-chamber thermal shock test chamber that enhances the thermal shock effect

Abstract

This utility model relates to the field of experimental equipment technology, specifically a two-chamber thermal shock test chamber that enhances the thermal shock effect. It includes a chamber body, which is divided into a heating chamber and a cooling chamber by a partition. An opening is provided in the partition. A movable clamping mechanism is installed inside the chamber, and a power assembly is mounted on the top of the chamber body. The movable clamping mechanism includes a bottom plate, a top plate, a bottom clamping assembly, and a top clamping assembly. The power assembly includes a base plate and a cylinder. This two-chamber thermal shock test chamber, which enhances the thermal shock effect, allows the power assembly to drive the movable clamping mechanism to directly switch positions between the heating and cooling chambers through the opening. This allows the test parts to directly alternate between the heating and cooling chambers, reducing the contact time between the test parts and the external environment, avoiding heat loss or additional heat absorption during the switching process, and making the thermal shock alternation process more continuous.

Description

Technical Field

[0001] This utility model relates to the field of experimental equipment technology, specifically a two-chamber thermal shock test chamber that can enhance the effect of thermal shock. Background Technology

[0002] Thermal shock test chambers are devices used to test the performance of materials under rapid temperature changes and are widely used in electronics, automotive and other fields. The dual-chamber design, through independent hot and cold chambers, simulates extreme temperature alternation environments, enabling the evaluation of parts' resistance to temperature changes and structural stability, providing a scientific basis for product reliability verification.

[0003] Utility model patent CN219482697U discloses a thermal shock chamber, which includes a chamber body with a side-opening door on the outside and a hot inner cavity and a cold inner cavity inside the chamber body. The thermal shock chamber, through the setting of a protective structure, automatically moves the workpiece to the outside of the chamber via a support plate after the high-temperature test is completed, and removes the workpiece from the upper part of the support plate. This avoids the user having to retrieve the workpiece from inside the hot inner cavity after the test, thus preventing injury from the residual high temperature inside the hot inner cavity. Furthermore, through the setting of a temperature monitoring component, the temperature inside the hot inner cavity is monitored in real time during the use of the shock chamber, thereby promptly alerting personnel to take timely action and improving the efficiency of high-temperature warning.

[0004] When performing alternating hot and cold tests in this thermal shock chamber, the workpiece needs to be removed from the hot or cold inner cavity through a protective structure before being placed into another cavity. During this process, the workpiece is exposed to the external environment and exchanges heat with the outside world, resulting in a time interval between the hot and cold transitions. This makes it impossible to achieve direct alternation between the hot and cold environments for the test parts, affecting the continuity and accuracy of the thermal shock. In view of this, we propose a two-chamber thermal shock test chamber that can enhance the thermal shock effect. Utility Model Content

[0005] The purpose of this invention is to provide a two-chamber thermal shock test chamber that can enhance the thermal shock effect, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A two-chamber thermal shock test chamber for enhancing thermal shock effects includes a chamber body. A partition is located in the middle of the chamber body, dividing the internal space into an upper heating chamber and a lower cooling chamber. A square opening is provided in the middle of the partition. A movable clamping mechanism for holding test parts is provided inside the chamber body. A power assembly for driving the movable clamping mechanism to move vertically within the chamber body is installed at the top of the chamber body. The movable clamping mechanism includes a square base plate, a square top plate located above the base plate, a bottom clamping assembly installed on the top surface of the base plate, and a top clamping assembly installed on the bottom surface of the top plate. Connecting rods are fixed between the four corners of the base plate and the top plate. The test parts are clamped between the bottom clamping assembly and the top clamping assembly. The power assembly includes a base plate and a cylinder mounted on the base plate. The piston rod end of the cylinder is fixedly connected to the top of the top plate.

[0008] Preferably, a pair of doors are hinged to the front end of the housing, and the two doors respectively cover the outer ends of the heating chamber and the cooling chamber in the housing;

[0009] This setup allows for the separate sealing of the heating and cooling chambers, reducing heat exchange between the inside and outside of the chambers and facilitating the handling of test parts.

[0010] Preferably, the bottom clamping assembly includes a vertically oriented fixed column fixed at the center of the top surface of the base plate and a turntable rotatably connected to the top of the fixed column;

[0011] Preferably, the top end of the fixed column is provided with a rotating hole, and the bottom end of the turntable is coaxially fixed with a rotating column, which is inserted into the rotating hole and rotatably connected to the fixed column.

[0012] In both of these settings, the fixed column provides stable support for the turntable, and the turntable and the fixed column can rotate flexibly through the cooperation of the rotating column and the rotating hole, which makes it easier to adjust the angle of the test parts and make them heat and cool more evenly.

[0013] Preferably, the top clamping assembly includes a threaded rod fixed at the center of the bottom surface of the top plate and in a vertical position, an adjusting sleeve threaded to the outside of the threaded rod, and a stop rotatably connected to the bottom end of the adjusting sleeve. By rotating the adjusting sleeve, the adjusting sleeve can be converted from rotational motion to vertical motion under the action of the threaded rod, thereby clamping the test part between the turntable and the stop.

[0014] Preferably, the top end of the adjusting sleeve is coaxially provided with a threaded hole, the adjusting sleeve is threadedly connected to the threaded rod through the threaded hole, and a dial is fixed on the outer periphery of the adjusting sleeve;

[0015] In these two settings, the threaded hole and threaded rod work together to realize the raising and lowering of the adjusting sleeve through threaded transmission, which can accommodate test parts of different heights. The dial makes it easy to manually rotate the adjusting sleeve, making the operation more convenient.

[0016] Preferably, the bottom of the threaded hole is closed, and the top of the abutment is threadedly connected to a hanging rod with a T-shaped cross-section. The T-shaped end of the hanging rod is hooked to the bottom of the threaded hole, and the hanging rod is rotatably connected to the adjusting sleeve.

[0017] In this configuration, the T-shaped hanging rod engages with the bottom of the closed hole to limit the axial displacement of the abutment, while simultaneously allowing relative rotation between the abutment and the adjusting sleeve, thus preventing damage to the parts during clamping.

[0018] Preferably, support plates are fixed at both ends of the base plate, and the bottom end of the support plate is fixed to the top of the housing by bolts. When the cylinder is working and pushes the top plate downward so that the bottom plate abuts against the bottom of the refrigeration chamber, the top plate moves into the opening and blocks the opening. At this time, the test part is in the refrigeration chamber. When the cylinder is working and pulls the top plate upward so that the top plate abuts against the top of the heating chamber, the bottom plate moves into the opening and blocks the opening. At this time, the test part is in the heating chamber.

[0019] In this setup, the support plate enhances the installation stability of the power assembly, and the top and bottom plates alternately seal the openings to isolate heat from the two chambers and ensure a stable test environment.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This two-chamber thermal shock test chamber, which enhances the thermal shock effect, has a power component that drives a movable clamping mechanism to directly switch positions between the heating and cooling chambers through a port. This allows test parts to be held in place by the movable clamping mechanism without being removed from the chamber, allowing them to alternate directly between the heating and cooling chambers. This reduces the contact time between the test parts and the external environment, avoids heat loss or additional heat absorption during the switching process, and makes the thermal alternation process more continuous. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the box in this utility model;

[0024] Figure 3 This is a schematic diagram of the movable clamping mechanism in this utility model;

[0025] Figure 4 This is an exploded view of the bottom clamping component in this utility model;

[0026] Figure 5 This is an exploded view of the top clamping component in this utility model;

[0027] Figure 6 This is a schematic diagram of the power component in this utility model;

[0028] The meanings of the labels in the diagram are as follows:

[0029] 100. Box body; 110. Partition; 111. Opening; 120. Box door;

[0030] 200. Movable clamping mechanism; 210. Base plate; 211. Connecting rod; 220. Top plate; 230. Bottom clamping assembly; 231. Fixed column; 2311. Rotating hole; 232. Turntable; 2321. Rotating column; 2322. First anti-slip groove; 240. Top clamping assembly; 241. Threaded rod; 242. Adjusting sleeve column; 2421. Threaded hole; 2422. Dial; 243. Abutment; 2431. Hanging rod; 2432. Second anti-slip groove; 250. Sealing ring;

[0031] 300. Power assembly; 310. Seat plate; 311. Support plate; 320. Cylinder. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0033] Please see Figures 1-6A two-chamber thermal shock test chamber designed to enhance thermal shock performance includes a chamber body 100 made of 304 stainless steel, which offers excellent corrosion resistance and thermal conductivity, allowing it to adapt to temperature variations both inside and outside the chamber. A thermally insulating partition 110, made of aluminum silicate fiberboard, with a thickness of 8-10 mm, is located in the center of the chamber body 100. The partition 110 divides the internal space of the chamber body 100 into a heating chamber at the top and a cooling chamber at the bottom. Its low thermal conductivity effectively reduces heat transfer between the two chambers, lowering energy loss. A pair of doors 120, equipped with silicone sealing strips, are hinged to the front of the chamber body 100. The two doors 120 respectively cover the outer ends of the heating and cooling chambers within the chamber body 100. The silicone sealing strips fill gaps when the doors 120 are closed, enhancing the chamber's sealing performance, reducing heat exchange with the outside environment, and maintaining a stable internal temperature. A square opening 111 is provided in the middle of the partition 110. A movable clamping mechanism 200 for clamping the test parts is provided inside the box 100. A power component 300 is installed at the top of the box 100 to drive the movable clamping mechanism 200 to move vertically inside the box 100. The power component 300 is used to drive the movable clamping mechanism 200 to switch positions between the heating chamber and the cooling chamber through the opening 111, so that the test parts can directly undergo hot and cold alternation without the need to take them out and put them in. This ensures the continuity of the hot and cold shock and avoids the interference of the external environment on the temperature of the test parts during the conversion process, making the test data closer to the real working conditions.

[0034] like Figure 1 , Figure 3 and Figure 6As shown, in this utility model, the movable clamping mechanism 200 includes a square base plate 210, a square top plate 220 located above the base plate 210, a bottom clamping assembly 230 installed on the top surface of the base plate 210, and a top clamping assembly 240 installed on the bottom surface of the top plate 220. Both the base plate 210 and the top plate 220 are made of high-strength aluminum alloy, which has a low density to reduce overall weight while possessing sufficient structural strength to withstand the weight of the test part and the forces acting during movement. Carbon steel connecting rods 211 are fixed between the four corners of the base plate 210 and the top plate 220. The connecting rods 211 are welded to the base plate 210 and the top plate 220 to form a stable frame structure, ensuring a stable connection between the base plate 210 and the top plate 220. This ensures that both move synchronously under the drive of the power assembly 300, preventing relative displacement from affecting the positional stability of the test part. The power assembly 300 includes a base plate 310 and a cylinder 320 mounted on the base plate 310. Support plates 311 are fixed to both ends of the base plate 310. The bottom ends of the support plates 311 are bolted to the top of the housing 100. This bolted connection disperses vibrations generated during operation of the power assembly 300, enhancing the stability of the power assembly 300 installation and reducing mechanism misalignment caused by vibration. The piston rod of the cylinder 320 is fixedly connected to the top of the top plate 220. The extension and retraction of the piston rod can be directly transmitted to the top plate 220, stably driving the movable clamping mechanism 200 to move up and down. The moving speed can be adjusted via pneumatic control to meet different test rhythm requirements.

[0035] like Figure 3 and Figure 4 As shown, specifically, the bottom clamping assembly 230 includes a vertically fixed column 231 fixed at the center of the top surface of the base plate 210 and a turntable 232 rotatably connected to the top of the fixed column 231. The fixed column 231 is made of solid steel and has high compressive strength to ensure the support strength for the turntable 232 and the test part. A rotating hole 2311 is provided at the top of the fixed column 231, and the rotating column 2321 is coaxially fixed at the bottom of the turntable 232. The rotating column 2321 is inserted into the rotating hole 2311 and rotatably connected to the fixed column 231. A small gap is left between the two to reduce frictional resistance, so that the turntable 232 can rotate flexibly, which facilitates the adjustment of the angle of the test part during the test, allowing all surfaces of the part to withstand thermal shock evenly.

[0036] like Figure 3 and Figure 5As shown, the top clamping assembly 240 further includes a threaded rod 241 fixed at the center of the bottom surface of the top plate 220 and in a vertical position, an adjusting sleeve 242 threadedly connected to the outside of the threaded rod 241, and a stop 243 rotatably connected to the bottom end of the adjusting sleeve 242. The top end of the adjusting sleeve 242 is coaxially provided with a threaded hole 2421, and the adjusting sleeve 242 is threadedly connected to the threaded rod 241 through the threaded hole 2421. A dial 2422 is fixed on the outer periphery of the adjusting sleeve 242. The surface of the dial 2422 is provided with anti-slip texture, which increases the contact area between the hand and the adjusting sleeve 242, making it easier to rotate and preventing the hand from slipping, and facilitating precise control of the rotation amount of the adjusting sleeve 242. The bottom of the threaded hole 2421 is closed. The top of the abutment 243 is threadedly connected to a hanging rod 2431 with a T-shaped cross-section. The T-shaped end of the hanging rod 2431 is hooked to the bottom of the threaded hole 2421. The hanging rod 2431 is rotatably connected to the adjusting sleeve 242. This connection method ensures that when the adjusting sleeve 242 rotates, the hanging rod 2431 only moves up and down with it without rotating. This ensures that the abutment 243 will not rotate when it moves up and down with the adjusting sleeve 242, thus avoiding relative friction with the test part and damage to the test part.

[0037] Furthermore, by rotating the adjusting sleeve 242, the rotational motion of the adjusting sleeve 242 can be converted into vertical motion under the action of the threaded rod 241. Utilizing the self-locking property of the threaded transmission, the abutment 243 can be stably held in a certain position, so that the test part is clamped between the turntable 232 and the abutment 243, and then the test part is clamped between the bottom clamping assembly 230 and the top clamping assembly 240, thus achieving stable clamping of test parts of different sizes. Moreover, the clamping force can be controlled by rotating the adjusting sleeve 242 to adapt to the clamping requirements of parts made of different materials.

[0038] It is worth noting that when the cylinder 320 is working and pushes the top plate 220 downward so that the bottom plate 210 abuts against the bottom of the cooling chamber, the top plate 220 moves into the opening 111 and blocks the opening 111. The size of the top plate 220 matches the opening 111, which can block the air flow between the heating chamber and the cooling chamber, prevent heat exchange between the two chambers, and ensure that the low temperature environment of the cooling chamber is not disturbed. At this time, the test part is in the cooling chamber. When the cylinder 320 is working and pulls the top plate 220 upward so that the top plate 220 abuts against the top of the heating chamber, the bottom plate 210 moves into the opening 111 and blocks the opening 111. Similarly, the bottom plate 210 can block the air flow between the two chambers and also play the role of isolating the heat between the two chambers, maintaining the high temperature environment of the heating chamber. At this time, the test part is in the heating chamber.

[0039] In this embodiment, the two-chamber thermal shock test chamber, which enhances the thermal shock effect, is used as follows: First, open the chamber door 120, place the test part on the turntable 232, and rotate the adjusting sleeve 242 to lower the abutment 243 and make it contact the top of the test part until the test part is securely clamped. Then, close the chamber door 120, set the target temperature of the heating chamber and the cooling chamber according to the test requirements, and start the relevant equipment of the heating chamber and the cooling chamber to make the two chambers reach the preset temperature and stabilize for a period of time. Next, start the cylinder 320, so that the piston rod of the cylinder 320 drives the movable clamping mechanism 200 to switch positions between the heating chamber and the cooling chamber through the port 111, so as to realize the alternation of heating and cooling of the test part under different temperature environments. Finally, after the test is completed, turn off the equipment of the heating chamber and the cooling chamber. After the temperature drops to a safe range, open the chamber door 120, rotate the adjusting sleeve 242 in the opposite direction to move the abutment 243 upward and disengage it from the test part, and then remove the test part. Example

[0040] To improve the sealing performance between the movable clamping mechanism 200 and the partition 110 after movement, such as Figure 3 As shown, sealing rings 250 are embedded on the outer peripheral surfaces of the bottom plate 210 and the top plate 220. The sealing rings 250 are made of high-temperature resistant silicone material, which has good elasticity and high and low temperature resistance. When the bottom plate 210 or the top plate 220 blocks the opening 111, it can deform under pressure and fill the gap between the two. It can maintain good sealing performance in environments with large temperature changes, further reduce heat exchange between the two cavities, and improve temperature control accuracy.

[0041] To increase the stability of the test part when the bottom clamping assembly 230 and the top clamping assembly 240 are clamping it, such as Figures 3-5 As shown, the top surface of the turntable 232 is provided with a number of first anti-slip grooves 2322, and the bottom surface of the abutment 243 is provided with a number of second anti-slip grooves 2432. These anti-slip grooves are staggered, which increases the friction between the test part and the test part, changes the direction of force transmission, prevents the test part from sliding due to inertia or vibration during the conversion process, and ensures the accuracy of the test position.

[0042] It is worth noting that the cylinder 320 involved in this utility model is existing conventional technology, and will not be described in detail here.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A two-chamber cold-heat shock test chamber capable of enhancing the effect of cold-heat shock, comprising a chamber body (100), characterized in that: A partition (110) is provided in the middle of the box (100), which divides the internal space of the box (100) into a heating chamber located above and a cooling chamber located below. A square opening (111) is provided in the middle of the partition (110). A movable clamping mechanism (200) for clamping test parts is provided inside the box (100). A power assembly (300) for driving the movable clamping mechanism (200) to move vertically inside the box (100) is installed at the top of the box (100). The movable clamping mechanism (200) includes a square base plate (210) and a component located on the base plate (210). The test part is clamped between the bottom clamping assembly (230) and the top clamping assembly (240) on the bottom surface of the base plate (210). The test part is clamped between the bottom clamping assembly (230) and the top clamping assembly (240). The power assembly (300) includes a seat plate (310) and a cylinder (320) mounted on the seat plate (310). The piston rod end of the cylinder (320) is fixedly connected to the top of the top plate (220).

2. The two-chamber cold and heat shock test chamber capable of intensifying a cold and heat shock effect according to claim 1, wherein: The front end of the housing (100) is hinged with a pair of doors (120), which respectively cover the outer ends of the heating chamber and the cooling chamber in the housing (100).

3. The two-chamber cold and heat shock test chamber capable of intensifying a cold and heat shock effect according to claim 1, wherein: The bottom clamping assembly (230) includes a fixed post (231) fixed at the center of the top surface of the base plate (210) and in a vertical position, and a turntable (232) rotatably connected to the top of the fixed post (231).

4. The two-chamber cold-heat shock test chamber capable of intensifying cold-heat shock effect according to claim 3, characterized in that: The top of the fixed column (231) is provided with a rotating hole (2311), and the bottom of the turntable (232) is coaxially fixed with a rotating column (2321). The rotating column (2321) is inserted into the rotating hole (2311) and rotatably connected to the fixed column (231).

5. The two-chamber thermal shock test chamber for enhancing thermal shock effect according to claim 3, characterized in that: The top clamping assembly (240) includes a threaded rod (241) fixed at the center of the bottom surface of the top plate (220) and in a vertical position, an adjusting sleeve (242) threaded to the outside of the threaded rod (241), and a stop (243) rotatably connected to the bottom end of the adjusting sleeve (242). By rotating the adjusting sleeve (242), the adjusting sleeve (242) can convert the rotational motion into vertical motion under the action of the threaded rod (241), thereby clamping the test part between the turntable (232) and the stop (243).

6. The two-chamber cold-heat shock test chamber capable of intensifying cold-heat shock effect according to claim 5, characterized in that: The top end of the adjusting sleeve (242) is coaxially provided with a threaded hole (2421). The adjusting sleeve (242) is threadedly connected to the threaded rod (241) through the threaded hole (2421). A dial (2422) is fixed on the outer periphery of the adjusting sleeve (242).

7. The two-chamber cold-heat shock test chamber capable of intensifying cold-heat shock effect according to claim 6, characterized in that: The bottom of the threaded hole (2421) is closed. The top of the abutment (243) is threaded with a hanging rod (2431) with a T-shaped cross-section. The T-shaped end of the hanging rod (2431) is attached to the bottom of the threaded hole (2421). The hanging rod (2431) is rotatably connected to the adjusting sleeve (242).

8. The two-chamber cold-heat shock test chamber capable of intensifying cold-heat shock effect according to claim 1, characterized in that: The left and right ends of the base plate (310) are fixed with support plates (311). The bottom end of the support plate (311) is fixed to the top of the box body (100) by bolts. When the cylinder (320) is working and pushes the top plate (220) downward so that the bottom plate (210) abuts against the bottom of the refrigeration chamber, the top plate (220) moves into the opening (111) and blocks the opening (111). At this time, the test part is in the refrigeration chamber. When the cylinder (320) is working and pulls the top plate (220) upward so that the top plate (220) abuts against the top of the heating chamber, the bottom plate (210) moves into the opening (111) and blocks the opening (111). At this time, the test part is in the heating chamber.

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