High and low temperature impact box structure determination

In order to ensure the high and low temperature impact box index requirements, it is necessary to carefully design the box structure and air flow circulation method. The low-temperature box structure should meet the requirements of the equipment from normal temperature to low-temperature refrigeration and rapid cooling during temperature shock, and ensure the uniformity of airflow and temperature in the box; the high-temperature box structure should meet the convenience of equipment heating and temperature from normal temperature to high temperature The requirement of rapid heating during the impact process, and to ensure the uniformity of airflow and temperature in the box. The air distribution method is an important part in the design of high and low temperature impact test chambers. Commonly used air supply methods include upper side to lower side return and full-face orifice top to lower side return. The comprehensive orifice air supply method has the advantages of fast mixing of airflow, uniform and parallel airflow diffusion, rapid temperature difference and rapid attenuation of wind speed, thereby making the temperature and airflow velocity distribution in the work area more uniform. Therefore, the airflow circulation method of the low-temperature box and the high-temperature box adopts the full-side orifice air supply and the lower air return method. Enter the voltage stabilizing layer along the circulating air duct to make the air flow equalize and equalize and then send it into the box.

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