High and low temperature test box with uniform heating

Abstract

The utility model belongs to the technical field of test boxes, and particularly relates to a high-low temperature test box with uniform heating. Comprising test cavities which are arranged in a test box at intervals left and right; a placement net plate is embedded in the bottom of the test cavity; the fans are arranged below the placing net plate in a bilateral symmetry manner; the air inlet end of the fan is communicated with the test cavity through the placing screen plate, and the air outlet end of the fan is communicated with the air duct cavity; the air duct cavities are distributed on the left side wall and the right side wall of the test cavity in a bilateral symmetry manner; a spoiler is vertically and obliquely arranged in the air duct cavity, and an air distribution plate is arranged at the air return end of the air duct cavity. According to the utility model, through the arrangement of the spoiler and the air distribution plate in the air duct cavity, high and low temperature airflow with uniform airflow distribution can be provided for the interior of the test cavity, so that the temperature rise rates of different areas are consistent, and the uniform heating effect during product testing is further improved.

Description

Technical Field

[0001] This utility model belongs to the field of test chamber technology, and specifically relates to a high and low temperature test chamber with uniform heating. Background Technology

[0002] In numerous industries, including digital products, food, lithium batteries, vehicles, chemicals, medical devices, and building materials, rigorous testing is essential to ensure product reliability. High and low temperature testing is a crucial component of this process. High and low temperature test chambers provide the necessary environmental temperatures for product testing. Compared to real-world testing, chamber testing is virtually unaffected by geographical or seasonal limitations and eliminates the need for prolonged outdoor testing, making it more time-efficient, labor-saving, and easier to operate. Therefore, high and low temperature test chambers are the most commonly used method for conducting high and low temperature tests.

[0003] Currently, the air inlets and outlets inside existing high and low temperature test chambers are generally arranged vertically or horizontally, which results in different temperature change rates in different areas of the test chamber, causing uneven temperature distribution. This undoubtedly causes certain deviations in the test measurement results of the product. Utility Model Content

[0004] The purpose of this invention is to provide a high and low temperature test chamber with uniform heating. By setting up a baffle and air distribution plate structure in the air duct cavity, a high and low temperature airflow with uniform distribution can be provided inside the test chamber, so that the temperature rise rate of different areas is consistent, thereby further improving the uniform heating effect during product testing.

[0005] To solve the above-mentioned technical problems, this utility model provides a high and low temperature test chamber with uniform heating, comprising:

[0006] The test chambers are arranged at left and right intervals inside the test box; and a mesh plate is embedded at the bottom of the test chamber.

[0007] The fans are arranged symmetrically below the placement mesh plate; the air inlet of the fans is connected to the test chamber through the placement mesh plate, and the air outlet of the fans is connected to the air duct cavity.

[0008] The air duct cavity is symmetrically arranged on the left and right side walls of the test chamber; and the air duct cavity is vertically inclined with baffles, while the air return end of the air duct cavity is provided with an air distribution plate.

[0009] Preferably, the test chamber also includes a refrigeration unit and a heating unit, which are installed at the rear of the test chamber to supply high-temperature or low-temperature airflow into the test chamber.

[0010] Preferably, the cross-section of the air duct cavity between the spoiler and the air distribution plate gradually decreases from the bottom to the top.

[0011] Preferably, the spoiler plate has a plurality of inverted U-shaped spoiler grooves linearly formed from top to bottom.

[0012] Preferably, the air distribution plate has several H-shaped air distribution grooves linearly formed from top to bottom.

[0013] Preferably, it also includes a thermocouple thermometer for detecting the temperature inside the test chamber.

[0014] Preferably, it also includes a pressure relief valve installed on the top of the test chamber.

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] This invention, through the arrangement of left and right fans and air duct cavities, can form opposing airflows through symmetrical double air duct cavities, eliminating the phenomenon of unilateral inertial vortex; through the arrangement of baffles and air distribution plates in the air duct cavity, it can provide uniform high and low temperature airflows to the test chamber, so that the temperature rise rate of different areas is consistent, further improving the uniform heating effect during product testing. Attached Figure Description

[0017] Figure 1 This is a structural diagram of a high and low temperature test chamber with uniform heating according to this utility model.

[0018] Figure 2 This is an internal view of a high and low temperature test chamber with uniform heating according to this utility model.

[0019] Figure 3 This is a partial structural diagram of the air distribution plate in this utility model.

[0020] Figure 4 This is a partial structural diagram of the spoiler in this utility model.

[0021] In the diagram: 1-Test chamber, 2-Placement mesh plate, 3-Air duct chamber, 31-Fan, 4-Baffle plate, 41-U-shaped baffle groove, 5-Air distribution plate, 51-H-shaped air distribution groove, 6-Pressure relief valve, 7-Box body, 8-Box door. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0023] like Figures 1-4 As shown, this embodiment of the utility model provides a high and low temperature test chamber with uniform heating, including a chamber body 7 and two chamber doors 8, and further including:

[0024] Test chamber 1 is arranged at left and right intervals inside the test chamber; and a placement mesh plate 2 is embedded at the bottom of test chamber 1; the external test frame of the product to be tested can be placed through the aforementioned placement mesh plate 2.

[0025] The fan 31 is symmetrically arranged below the placement mesh plate 2; the air inlet of the fan 31 is connected to the test chamber 1 through the placement mesh plate 2, and the air outlet of the fan 31 is connected to the air duct cavity 3; the above-mentioned arrangement of the left and right fans 31 and the air duct cavity 3 can form opposing airflows through the symmetrical double air duct cavities 3, eliminating the phenomenon of unilateral inertial vortex.

[0026] The air duct cavity 3 is symmetrically arranged on the left and right side walls of the test chamber 1; and the air duct cavity 3 is vertically inclined with baffles 4, while the return air end of the air duct cavity 3 is equipped with an air distribution plate 5. The baffles 4 inside can further turbulently distribute the high-temperature or low-temperature hot airflow in the air duct cavity 3, improving the uniformity of airflow distribution. At the same time, the air distribution plate 5 can induce secondary distribution of airflow, greatly improving the uniformity of airflow distribution.

[0027] It also includes a refrigeration unit and a heating unit, which are installed at the rear of the test chamber 1 to supply high-temperature or low-temperature airflow into the test chamber 1. This is a common structure in the prior art, so it will not be described in detail.

[0028] The cross-section of the air duct cavity 3 between the spoiler 4 and the air distribution plate 5 gradually decreases from bottom to top. Through the design of gradually reducing the cross-section, the flow speed of the airflow from bottom to top can be increased.

[0029] The spoiler 4 has several inverted U-shaped spoiler grooves 41 linearly arranged from top to bottom to induce the airflow to be initially evenly distributed.

[0030] The air distribution plate 5 has H-shaped air distribution grooves 51 linearly opened from top to bottom to induce the airflow to be evenly distributed in a secondary manner.

[0031] It also includes a thermocouple thermometer for detecting the temperature inside test chamber 1.

[0032] It also includes a pressure relief valve 6, which is installed on the top of the test chamber 1.

[0033] It also includes the following working principles:

[0034] When testing the product under test, first open the chamber door 8, place the product fixture on the external test frame, then place the entire product on the placement mesh plate 2, close the chamber door 8, and then conduct high and low temperature tests. Through the aforementioned fan 31, the high or low temperature airflow in the test chamber 1 can be driven through the mesh of the placement mesh plate 2 into the air duct cavity 3. The structure of the baffle plate 4 and the air distribution plate 5 can induce a uniform distribution of airflow, ensuring that the hot airflow blown out from the left and right air duct cavities 3 is evenly distributed on the surface of the product under test, improving the uniformity of heating of the product under test.

[0035] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A high and low temperature test chamber with uniform heating, characterized in that, include: The test chamber (1) is arranged in a left-right interval inside the test chamber; and the bottom of the test chamber (1) is embedded with a mesh plate (2); The fan (31) is symmetrically arranged below the placement mesh plate (2); and the air inlet of the fan (31) is connected to the test chamber (1) through the placement mesh plate (2), and the air outlet of the fan (31) is connected to the air duct cavity (3). The air duct cavity (3) is symmetrically arranged on the left and right side walls of the test cavity (1); and the air duct cavity (3) is vertically inclined and equipped with a baffle plate (4), while the air return end of the air duct cavity (3) is equipped with an air distribution plate (5).

2. The high and low temperature test chamber with uniform heating as described in claim 1, characterized in that, It also includes a refrigeration unit and a heating unit, which are installed behind the test chamber (1) to deliver high-temperature or low-temperature airflow into the test chamber (1).

3. The high and low temperature test chamber with uniform heating as described in claim 1, characterized in that, The cross-section of the air duct cavity (3) between the spoiler (4) and the air distribution plate (5) gradually decreases from the bottom to the top.

4. The high and low temperature test chamber with uniform heating as described in claim 1, characterized in that, The spoiler (4) has several inverted U-shaped spoiler grooves (41) linearly arranged from top to bottom.

5. A high and low temperature test chamber with uniform heating as described in claim 1, characterized in that, The air distribution plate (5) has H-shaped air distribution grooves (51) linearly opened from top to bottom.

6. A high and low temperature test chamber with uniform heating as described in claim 1, characterized in that, It also includes a thermocouple thermometer for detecting the temperature inside the test chamber (1).

7. A high and low temperature test chamber with uniform heating as described in any one of claims 1 to 6, characterized in that, It also includes a pressure relief valve (6), which is installed on the top of the test chamber (1).

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