A cold and hot shock test chamber with uniform temperature distribution

Abstract

This utility model relates to the field of airflow disturbance support technology, specifically a thermal shock test chamber with uniform temperature distribution. The utility model includes a chamber body, inside which is an airflow disturbance device. The airflow disturbance device includes a fixed base, one side of which is fixedly connected to the chamber body. A servo motor is fixedly connected to the inner side of the fixed base. A transmission rod is fixedly connected to the output end of the servo motor. A fixed rod is fixedly connected to one end of the transmission rod. A circular plate is fixedly connected to one end of the fixed rod. A rotating rod is fixedly connected to one end of the circular plate. An airflow disturbance plate is fixedly connected to the arc surface of the rotating rod. This invention solves the problem that in traditional thermal shock test chambers, airflow typically flows in a single direction, forming a "mainstream zone." Because this unidirectional flow pattern cannot be actively broken, the airflow in non-mainstream areas is extremely low, resulting in minimal air exchange with the mainstream zone and causing significant local temperature deviations from the average temperature within the chamber.

Description

Technical Field

[0001] This utility model relates to the field of turbulence support technology, and in particular to a thermal shock test chamber with uniform temperature distribution. Background Technology

[0002] Thermal shock test chambers, also known as temperature shock test chambers, are reliability testing equipment that simulates extreme temperature changes. By rapidly switching between high and low temperature test conditions, they assess the temperature shock resistance, structural stability, and service life of products and components. They are one of the core equipment for product development and quality testing in the fields of electronics, automobiles, and aerospace.

[0003] In existing technologies, the airflow inside a thermal shock test chamber typically flows in a single direction and forms a "mainstream zone." Since this unidirectional flow pattern cannot be actively broken, the airflow in non-mainstream zones is extremely low, resulting in minimal air exchange with the mainstream zone and consequently causing local temperatures to deviate significantly from the average value inside the chamber. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing thermal shock test chambers, where airflow typically flows in a single direction and forms a "mainstream zone." Because this unidirectional flow pattern cannot be actively broken, the airflow in non-mainstream zones is extremely low. Therefore, this invention proposes a thermal shock test chamber with uniform temperature distribution.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a thermal shock test chamber with uniform temperature distribution, comprising a chamber body, wherein a flow-dispersing device is provided inside the chamber body, the flow-dispersing device comprising a fixed base, one side of the fixed base being fixedly connected to the chamber body, a servo motor being fixedly connected to the inner side of the fixed base, a transmission rod being fixedly connected to the output end of the servo motor, a fixed rod being fixedly connected to one end of the transmission rod, a circular plate being fixedly connected to one end of the fixed rod, a rotating rod being fixedly connected to one end of the circular plate, and a flow-dispersing plate being fixedly connected to the arc surface of the rotating rod.

[0006] The effect achieved by the above components is that the servo motor starts and drives the transmission rod to rotate, which in turn drives the fixed rod to rotate the circular plate, causing the rotating rod to rotate synchronously, and the spoiler to rotate around the rotating rod as the center.

[0007] Preferably, a flange bearing is fixedly connected to the arc surface of the fixing rod, and the outer ring of the flange bearing is fixedly connected to the housing.

[0008] The effect achieved by the above components is that the rotation of the fixed rod drives the inner ring of the flange bearing to rotate, and since the outer ring of the flange bearing is fixed on the housing, the fixed rod is prevented from shifting during rotation.

[0009] Preferably, the arc surface of the rotating rod is rotatably connected to a limit ring.

[0010] The effect achieved by the above components is that the limiting ring and the rotating rod are matched.

[0011] Preferably, a support plate is fixedly connected to the arc surface of the limiting ring, and one side of the support plate is fixedly connected to the box body.

[0012] The effect achieved by the above components is that the support plate is fixed between the limiting ring and the housing, thus fixing the position of the limiting ring.

[0013] Preferably, the box body is provided with a fixing device inside, the fixing device includes a base plate, one side of the base plate is fixedly connected to the box body, and two L-shaped grooves are opened on one side of the base plate.

[0014] The effect achieved by the above components is that the L-shaped groove is opened on the bottom plate, and the bottom plate is fixed to the box body.

[0015] Preferably, two adjusting plates are slidably connected inside the two L-shaped grooves, and an L-shaped plate is fixedly connected to one side of each adjusting plate.

[0016] The effect achieved by the above components is that the movement of the L-shaped plate causes the adjusting plate to slide on the L-shaped groove.

[0017] Preferably, a clamping plate is fixedly connected to one side of the L-shaped plate.

[0018] The effect achieved by the above components is to fix the clamping plate to the L-shaped plate.

[0019] Preferably, the long arm end of the L-shaped plate is fixedly connected to an internal threaded ring, and the internal thread of the internal threaded ring is connected to a threaded rod.

[0020] The effect achieved by the above components is that the threaded rod and the internal threaded ring are matched, and the internal threaded ring is fixed on the L-shaped plate.

[0021] Preferably, one end of the threaded rod is fixedly connected to a stop block.

[0022] The effect achieved by the above components is that the position of the stop block is adjusted by moving the threaded rod.

[0023] In summary, the beneficial effects of this utility model are as follows: In this invention, when it is necessary to mix the airflow inside the chamber, the servo motor is activated, and the transmission rod drives the fixed rod and the circular plate to rotate. The rotating rod drives the baffle plate to stir the airflow, making the temperature inside the chamber uniform. Through the baffle device, the problem of airflow in traditional thermal shock test chambers usually flows in a single direction and forms a "mainstream zone". Since this unidirectional flow pattern cannot be actively broken, the airflow in the non-mainstream zone is extremely low, and there is little air exchange with the mainstream zone, which causes the local temperature to deviate significantly from the average value inside the chamber.

[0024] In this invention, by means of a fixing device, when it is necessary to fix the test specimen inside the chamber, the threaded rod is rotated to loosen the L-shaped plate limit, the position of the clamping plate is adjusted to clamp the test specimen, and then the threaded rod is rotated in the opposite direction to make the abutment block abut against the bottom plate to fix the clamping plate. By means of a fixing device, the problem of traditional thermal shock test chambers, where the test specimen is placed directly inside the chamber and relies solely on its own weight to maintain its position, is easily caused by positional displacement during the test, resulting in damage to the test specimen. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the turbulence structure of this utility model; Figure 3 This is a partial structural diagram of the turbulence structure of this utility model; Figure 4 This is a schematic diagram of the fixed structure of this utility model.

[0026] Legend: 1. Housing; 2. Baffle device; 201. Fixed base; 202. Servo motor; 203. Transmission rod; 204. Fixed rod; 205. Flange bearing; 206. Circular plate; 207. Rotating rod; 208. Baffle plate; 209. Limiting ring; 210. Support plate; 3. Fixing device; 31. Base plate; 32. L-shaped groove; 33. Adjusting plate; 34. L-shaped plate; 35. Clamping plate; 36. Internal threaded ring; 37. Threaded rod; 38. Abutment block. Detailed Implementation

[0027] Reference Figure 1 As shown, this utility model provides a technical solution: a thermal shock test chamber with uniform temperature distribution, including a chamber body 1, a turbulence device 2 inside the chamber body 1, and a fixing device 3 inside the chamber body 1.

[0028] The specific setup and function of its turbulence device 2 and fixing device 3 will be explained below.

[0029] Reference Figure 2 and Figure 3As shown in this embodiment, the aerodynamic device 2 includes a fixed base 201. One side of the fixed base 201 is fixedly connected to the housing 1. A servo motor 202 is fixedly connected to the inner side of the fixed base 201. A transmission rod 203 is fixedly connected to the output end of the servo motor 202. A fixed rod 204 is fixedly connected to one end of the transmission rod 203. A circular plate 206 is fixedly connected to one end of the fixed rod 204. A rotating rod 207 is fixedly connected to one end of the circular plate 206. A spoiler 208 is fixedly connected to the arc surface of the rotating rod 207. This achieves the effect that the output end of the servo motor 202 drives the transmission rod 203 to rotate, causing the fixed rod 204 to drive the circular plate 206 to rotate, and the rotating rod 207 to rotate synchronously, causing the spoiler 208 to rotate around the rotating rod 207 as the center. A flange bearing 205 is fixedly connected to the arc surface of the fixed rod 204, and the outer ring of the flange bearing 205 is fixedly connected to the housing 1. The rotation of the fixed rod 204 drives the inner ring of the flange bearing 205 to rotate. Since the outer ring of the flange bearing 205 is fixed to the housing 1, the fixed rod 204 is prevented from shifting during rotation. The arc surface of the rotating rod 207 is rotatably connected to the limiting ring 209, achieving a matching effect between the limiting ring 209 and the rotating rod 207. The arc surface of the limiting ring 209 is fixedly connected to the support plate 210, and one side of the support plate 210 is fixedly connected to the housing 1. This achieves the effect of fixing the position of the limiting ring 209 by fixing the support plate 210 between the limiting ring 209 and the housing 1.

[0030] Reference Figure 4 As shown, in this embodiment: the fixing device 3 includes a base plate 31, one side of which is fixedly connected to the housing 1. Two L-shaped grooves 32 are formed on one side of the base plate 31. This achieves the effect that the L-shaped grooves 32 are formed on the base plate 31, and the base plate 31 is fixed to the housing 1. Two adjusting plates 33 are slidably connected inside the two L-shaped grooves 32. An L-shaped plate 34 is fixedly connected to one side of the adjusting plate 33. This achieves the effect that the movement of the L-shaped plate 34 causes the adjusting plate 33 to slide on the L-shaped groove 32. A clamping plate 35 is fixedly connected to one side of the L-shaped plate 34. This achieves the effect that the clamping plate 35 is fixed to the L-shaped plate 34. An internally threaded ring 36 is fixedly connected to the long arm end of the L-shaped plate 34. A threaded rod 37 is threadedly connected to the internal thread of the internally threaded ring 36. This achieves the effect that the threaded rod 37 and the internally threaded ring 36 are compatible, and the internally threaded ring 36 is fixed to the L-shaped plate 34. A stop block 38 is fixedly connected to one end of the threaded rod 37. This achieves the effect of adjusting the position of the stop block 38 by moving the threaded rod 37.

[0031] Working principle: When it is necessary to mix the airflow inside the housing 1, the operator first connects the servo motor 202 to the control system of the machine and starts it. The output end of the servo motor 202 drives the transmission rod 203 to rotate, and the transmission rod 203 in turn drives the fixed rod 204 and the circular plate 206 to rotate. At this time, the baffle plate 208 rotates around the rotating rod 207. During the rotation, the baffle plate 208 disturbs the airflow inside the housing 1, promotes the full mixing of the airflow, and effectively avoids large temperature deviations in local areas. At the same time, when the fixed rod 204 rotates, it will drive the inner ring of the flange bearing 205 to rotate synchronously. Since the outer ring of the flange bearing 205 is fixed to the housing, 1. To prevent the fixed rod 204 from shifting position during rotation, the rotating rod 207 rotates within the limiting ring 209 during rotation. The limiting ring 209 is fixed to the chamber 1 by the support plate 210, thereby stabilizing its position and ensuring the stability of the limiting ring 209. This further prevents the rotating rod 207 from shifting during rotation. The turbulence device 2 solves the problem that the airflow in traditional thermal shock test chambers usually flows in a single direction and forms a "mainstream zone". Since this unidirectional flow pattern cannot be actively broken, the airflow in the non-mainstream zone is extremely low, and there is little air exchange with the mainstream zone, which causes the local temperature to deviate significantly from the average value inside the chamber.

[0032] When the test specimen needs to be fixed inside the chamber 1 using the fixing device 3, the operator first places the test specimen on the base plate 31, then rotates the threaded rod 37 to move it away from the inner threaded ring 36. The movement of the threaded rod 37 causes the abutment 38 to disengage from the base plate 31, thereby releasing the limiting position of the L-shaped plate 34. Next, the L-shaped plate 34 is moved closer to the test specimen until the clamping plate 35 contacts the test specimen. Then, the threaded rod 37 is rotated in the opposite direction to move the abutment 38 towards the base plate 31 until it abuts against the base plate 31, thereby limiting and fixing the L-shaped plate 34, and then fixing the position of the clamping plate 35, finally completing the stable clamping of the test specimen. The fixing device 3 solves the problem of traditional thermal shock test chambers where the test specimen is placed directly inside the chamber 1 and relies solely on its own weight to maintain its position, which is prone to positional displacement during the test and causes damage to the test specimen.

[0033] 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 mechanical connection or an electrical 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.

Claims

1. A thermal shock test chamber with uniform temperature distribution, comprising a chamber body (1), characterized in that: The housing (1) is equipped with a flow-dispersing device (2). The flow-dispersing device (2) includes a fixed base (201). One side of the fixed base (201) is fixedly connected to the housing (1). A servo motor (202) is fixedly connected to the inner side of the fixed base (201). A transmission rod (203) is fixedly connected to the output end of the servo motor (202). A fixed rod (204) is fixedly connected to one end of the transmission rod (203). A circular plate (206) is fixedly connected to one end of the fixed rod (204). A rotating rod (207) is fixedly connected to one end of the circular plate (206). A flow-dispersing plate (208) is fixedly connected to the arc surface of the rotating rod (207).

2. The thermal shock test chamber with uniform temperature distribution according to claim 1, characterized in that: The arc surface of the fixing rod (204) is fixedly connected to a flange bearing (205), and the outer ring of the flange bearing (205) is fixedly connected to the housing (1).

3. The thermal shock test chamber with uniform temperature distribution according to claim 1, characterized in that: The circular arc surface of the rotating rod (207) is rotatably connected to a limiting ring (209).

4. The thermal shock test chamber with uniform temperature distribution according to claim 3, characterized in that: The arc surface of the limiting ring (209) is fixedly connected to the support plate (210), and one side of the support plate (210) is fixedly connected to the box body (1).

5. A thermal shock test chamber with uniform temperature distribution according to claim 4, characterized in that: The box (1) is provided with a fixing device (3) inside. The fixing device (3) includes a base plate (31). One side of the base plate (31) is fixedly connected to the box (1). Two L-shaped grooves (32) are opened on one side of the base plate (31).

6. A thermal shock test chamber with uniform temperature distribution according to claim 5, characterized in that: Two adjusting plates (33) are slidably connected inside the two L-shaped grooves (32), and an L-shaped plate (34) is fixedly connected to one side of the adjusting plate (33).

7. A thermal shock test chamber with uniform temperature distribution according to claim 6, characterized in that: A clamp (35) is fixedly connected to one side of the L-shaped plate (34).

8. A thermal shock test chamber with uniform temperature distribution according to claim 7, characterized in that: The long arm end of the L-shaped plate (34) is fixedly connected to an internal threaded ring (36), and the internal thread of the internal threaded ring (36) is connected to a threaded rod (37).

9. A thermal shock test chamber with uniform temperature distribution according to claim 8, characterized in that: One end of the threaded rod (37) is fixedly connected to a stop block (38).

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