In the field of advanced manufacturing and precision testing,The LHGDW walk-in high and low temperature test chamber, with its large space, high precision, and intelligent characteristics, has become the core equipment for product reliability verification.The design of its box structure is not only related to equipment performance, but also directly affects the accuracy of test data and the service life of the equipment. This article will deeply analyze the mystery of the box structure of the LHGDW test chamber.

　　1、 Double layer steel plate sandwich insulation layer: the cornerstone of temperature stability

The body of the LHGDW test chamber adopts a double-layer steel plate structure, with the outer layer made of high-quality cold-rolled steel plate spray treated, possessing high strength and wear resistance; The inner layer is made of SUS304 stainless steel mirror panel, which is corrosion-resistant and easy to clean. A 100mm thick high-density polyurethane rigid foam material is filled between two layers of steel plates, with a thermal conductivity as low as 0.022W/m · K, effectively isolating external temperature interference.

　　2、 Modular library board design: flexible adaptation to multiple scenarios

To meet the testing space requirements of different industries, the LHGDW test box adopts a modular library board assembly structure. The storage board consists of a stainless steel inner liner, a polyurethane insulation layer, and a color steel outer panel. It is connected by high-strength bolts and can be quickly disassembled and expanded in volume. For example, a new energy vehicle company needs to test the entire vehicle battery pack. By splicing four storage boards, the testing space can be expanded from 10m ³ to 30m ³, making it easy to accommodate large samples. In addition, the load-bearing capacity of the storage board can reach 500kg/㎡, which can support long-term testing of heavy mechanical components.

　　3、 Positive pressure ceiling air supply system: an invisible pusher with uniform temperature and humidity

The top of the box is integrated with a multi wing centrifugal fan and a positive pressure air supply channel, forming a vertical convection cycle. After being processed by the heating/cooling system, the air is evenly sent into the box through the ceiling orifice plate, and the heat exchanged air returns from the bottom return air outlet, forming a closed-loop circulation. This design avoids the local temperature deviation caused by traditional side air supply, ensuring a temperature and humidity uniformity of ≤± 2 ℃ inside the box. For example, when testing aviation electronic equipment, the system can accurately simulate high-altitude and low-temperature environments, avoiding misjudgment of equipment performance due to uneven temperature.

　　4、 Multiple Security Protection: Guarding Testing Security from Details

The LHGDW test chamber incorporates multiple safety designs into the box structure:

1. Double layer high-temperature resistant sealing strip: A silicone sealing strip is used between the door frame and the box body, combined with magnetic adsorption technology to prevent temperature leakage;

2. Explosion proof observation window: The three-layer insulated tempered glass is embedded with a conductive film heating defrosting layer, which not only ensures the observation needs of operators, but also avoids low-temperature frosting;

3. Emergency pressure relief device: The top of the box is equipped with an automatic pressure relief valve, which can quickly release when the internal pressure is abnormal, preventing equipment deformation;

4. Anti slip slope and fixed casters: The bottom is designed with a load-bearing slope to facilitate the entry and exit of large sample carts, and is equipped with lockable PU movable wheels to ensure stable positioning of the equipment.

　　Conclusion: Structural innovation drives testing upgrade

The box structure of the LHGDW walk-in high and low temperature test chamber is a deep integration of materials science, thermodynamics, and engineering design. From insulation layer to air supply system, from modular storage board to safety protection, every detail is aimed at improving testing accuracy and equipment reliability. In the rigorous testing of industries such as new energy vehicles, aerospace, and electronic communications, this structure is helping companies break through technological bottlenecks, accelerate product iteration, and write a solid footnote to the "Chinese quality" of advanced manufacturing.