Device for filtering and uniformizing air speed
By using a combination of mesh panels and mesh in the constant temperature and humidity chamber, the problems of wind speed and temperature uniformity were solved, achieving a temperature uniformity of less than 1℃ at wind speeds of less than 0.15m/s, thus improving the accuracy of test data.
Patent Information
- Application Number
- CN202423250356.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing technologies struggle to achieve wind speeds of less than 0.15 m/s and temperature uniformity of less than 1°C in constant temperature and humidity chambers, resulting in significant discrepancies between test data and real human body environments.
The device employs a combination of mesh panels and mesh fabric. The mesh panels filter the airflow to less than 0.15 m/s while ensuring a temperature uniformity of less than 1°C. The combination of mesh panels and mesh fabric forms a complete device that achieves uniformity in both airflow and temperature.
It achieves a temperature uniformity of less than 1℃ at wind speeds of less than 0.15m/s, better simulating normal human environmental conditions and improving the accuracy of test data.
Smart Images
Figure CN223761051U_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of automated testing, and in particular to a device for filtering and uniformizing wind speed. Background Technology
[0002] During the testing process, the equipment has high environmental requirements, including a temperature uniformity of less than 1°C and a wind speed of less than 0.15 m / s. The conventional solution is to place the fixture in a constant temperature and humidity chamber. To achieve temperature uniformity, a fan is needed to promote the uniformity of air temperature inside the chamber. However, the current test simulates the usage conditions of a person in a normal environment, requiring a wind speed of <0.15 m / s. Otherwise, the test data will not be consistent with the actual usage environment and will be meaningless.
[0003] However, most existing technologies use a single constant temperature and humidity chamber, which achieves temperature uniformity by blowing air through a fan. However, the wind speed is far beyond the requirements, and simply reducing the wind speed cannot meet the temperature uniformity requirements. Therefore, it is necessary to provide a device that filters and uniforms wind speed. By using the characteristic of mesh plates to uniform wind speed, it is possible to better control the temperature uniformity, reduce the wind speed, better simulate the environmental conditions that the human body is in, and better test the performance parameters of the product when used in a normal human environment. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a device for filtering and uniformizing wind speed. By using the characteristic of the mesh plate to uniformly distribute wind speed, it can better control the uniformity of temperature, reduce the wind speed, better simulate the environmental conditions under which the human body is normally located, and better test the performance parameters of the product when used in a normal human environment.
[0005] The technical solution adopted by this utility model is as follows: This utility model includes a constant temperature chamber, a filter box is arranged inside the constant temperature chamber, a test platform is arranged inside the filter box, a front door is arranged at the front of the filter box, and mesh and mesh plate are arranged sequentially from the outside to the inside on the left and right sides of the filter box.
[0006] As can be seen from the above scheme, the test platform is used to place the product to be tested. When the constant temperature chamber provides a stable and specified temperature for the filter chamber, the temperature and airflow (wind speed) pass through the mesh, then through the mesh plate, and flow into the cavity, circulating within the cavity, and finally flowing out through the mesh plate. This cycle is repeated to ultimately achieve temperature uniformity and low wind speed. This application, by adding the mesh plate in conjunction with the mesh, achieves a filtration wind speed of less than 0.15 m / s while maintaining a temperature uniformity of <1℃. This helps improve the temperature uniformity within the environmental area and reduce the wind speed within the environmental area, thereby more accurately simulating the environmental conditions under which a human body is normally located, and thus better testing the performance parameters of the product when used in a normal human environment.
[0007] A preferred embodiment is that the aperture of the mesh plate is 10mm, the aperture spacing of the mesh plate is 20mm, and the aperture spacing of the mesh plate is uniformly distributed.
[0008] A preferred embodiment is that the mesh count of the mesh is 200.
[0009] In a preferred embodiment, the inner top wall of the filter box, the inner rear wall of the filter box, and the inner wall of the front door are all made of transparent acrylic.
[0010] A preferred option is to have foam adhered to all four sides of the transparent acrylic.
[0011] A preferred embodiment is that the bottom of the filter box is provided with a support frame.
[0012] In a preferred embodiment, a connecting block is provided at the bottom of the support frame, and the connecting block is fixedly connected to the bottom of the cavity of the filter box.
[0013] In a preferred embodiment, the test platform includes a sliding plate, a linear guide rail is slidably mounted on the bottom of the sliding plate, and several sets of product carriers are mounted on the top of the sliding plate. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0015] Figure 2 This is an exploded three-dimensional structural view of the filter box;
[0016] Figure 3 This is a three-dimensional structural diagram of the platform under test;
[0017] Figure 4 This is an airflow diagram of the filter box within the cavity of the constant temperature chamber. Detailed Implementation
[0018] like Figure 1 , Figure 2as well as Figure 4 As shown, in this embodiment, the present invention includes a constant temperature chamber 1, a filter chamber 2 is provided inside the constant temperature chamber 1, a test platform 3 is provided inside the filter chamber 2, a front door 4 is provided at the front of the filter chamber 2, and a mesh 5 and a mesh plate 6 are provided sequentially from the outside to the inside on the left and right sides of the filter chamber 2.
[0019] The test platform 3 is used to place the product to be tested. The filter box 2 has four closed sides and two open sides to control the airflow direction. The mesh plate 6 is used to uniformize the airflow, and the mesh 5 is used to filter out excess airflow. The combination of the mesh plate 6 and the mesh 5 is installed on the frame of the filter box 2 to form a complete device. The device forms a complete cavity. When the external environment provides a stable and specified temperature through the constant temperature chamber 1, the temperature and airflow (airflow) pass through the mesh 5, then through the mesh plate 6, and flow into the cavity, circulating within the cavity, and finally flowing out through the mesh plate 6. This cycle is repeated to achieve temperature uniformity and low airflow. This application achieves a filtration airflow velocity of less than 0.15 m / s and a temperature uniformity of <1℃ by adding the mesh plate and the mesh. This helps to improve the temperature uniformity within the environmental area and reduce the airflow velocity within the environmental area, thereby more accurately simulating the environmental conditions under which the human body is normally located, and thus better testing the performance parameters of the product when used in a normal human environment.
[0020] like Figure 1 As shown, in this embodiment, the aperture of the mesh plate 6 is 10mm, the hole spacing of the mesh plate 6 is 20mm, and the hole spacing of the mesh plate 6 is evenly distributed.
[0021] like Figure 2 As shown, in this embodiment, the mesh count of the mesh 5 is 200 mesh.
[0022] like Figure 2 As shown, in this embodiment, the top inner wall, the rear inner wall, and the inner wall of the front door 4 of the filter box 2 are all provided with transparent acrylic. The transparent acrylic is used to ensure the airtightness of the filter box 2 and prevent air leakage.
[0023] like Figure 2 As shown, in this embodiment, foam is adhered to all four sides of the transparent acrylic. The foam serves to fix the transparent acrylic in place.
[0024] like Figure 2 As shown, in this embodiment, a support frame 7 is provided at the bottom of the filter box 2. The support frame 7 raises the test platform 3 to a certain height, allowing the flow inside the cavity of the filter box 2 to circulate fully, ensuring the accuracy of the test.
[0025] like Figure 2 As shown, in this embodiment, a connecting block 8 is provided at the bottom of the support frame 7, and the connecting block 8 is fixedly connected to the bottom of the cavity of the filter box 2.
[0026] like Figure 3 As shown, in this embodiment, the test platform 3 includes a sliding plate 9, a linear guide rail 10 slidably disposed at the bottom of the sliding plate 9, and several sets of product carriers 11 disposed at the top of the sliding plate 9. The sliding plate 9 adopts a sliding rail structure, which is beneficial to improving the product loading rate, and the product carriers 11 are used to install the products to be tested.
Claims
1. A device for filtering and homogenizing air velocity, comprising a thermostat (1), characterized in that: The inside of the thermostat (1) is provided with a filter box (2), the inside of the filter box (2) is provided with a to-be-tested platform (3), the front of the filter box (2) is provided with a front door (4), the front of the filter box (2) is provided with the front door (4), and the left and right parts of the filter box (2) are sequentially provided with a screen gauze (5) and a screen plate (6) from outside to inside.
2. A device for filtering and homogenizing air velocity according to claim 1, characterized in that: The aperture of the screen plate (6) is 10mm, the pitch of the screen plate (6) is 20mm, and the pitches of the screen plate (6) are uniformly distributed.
3. A device for filtering and homogenizing air velocity according to claim 1, characterized in that: The mesh number of the screen gauze (5) is 200.
4. A device for filtering and homogenizing air velocity according to claim 1, characterized in that: The top inner wall of the filter box (2), the rear inner wall of the filter box (2) and the inner wall of the front door (4) are all provided with transparent acrylic.
5. A device for filtering and homogenizing air velocity according to claim 3, characterized in that: The periphery of the transparent acrylic is pasted with foam.
6. A device for filtering and homogenizing air velocity according to claim 1, characterized in that: The bottom of the filter box (2) is provided with a support frame (7).
7. A device for filtering and homogenizing air velocity according to claim 6, characterized in that: The bottom of the support frame (7) is provided with a connecting block (8), and the connecting block (8) is fixedly connected with the cavity bottom of the filter box (2).
8. A device for filtering and homogenizing air velocity according to claim 1, characterized in that: The to-be-tested platform (3) comprises a sliding plate (9), the bottom of the sliding plate (9) is slidably provided with a linear guide rail (10), and the top of the sliding plate (9) is provided with a plurality of groups of product carriers (11).