The invention discloses a temperature and
humidity box capable of improving temperature and
humidity uniformity, relates to the technical field of environment
simulation equipment, and aims to solve the problem of poor temperature and
humidity uniformity in a
working space caused by an unreasonable air duct structure of traditional equipment. The temperature and humidity box comprises an inner container, a power driving unit, an air duct plate and an air guide
assembly. The corners of the inner container are arranged to be arc-shaped faces so as to reduce
airflow vortexes. The air duct plates are of a U-shaped structure and divide the interior of the inner container into an
air cavity and a working cavity, uniform air outlet holes are formed in the upper air duct plate and the lower air duct plate, and the middle air duct plate is not provided with holes so that air flow can be forced to be evenly diffused towards the two sides. And the power driving unit realizes wide air supply. The air guide
assembly comprises a first air guide plate arranged on the air return path and a second air guide plate arranged on the air outlet path, and the first air guide plate and the second air guide plate jointly guide
airflow to form smooth and efficient
vertical circulation. By optimizing the air duct structure and the air distribution, the uniformity, the circulation efficiency and the operation stability of the temperature field and the humidity field in the temperature and humidity box are remarkably improved.