HEATING AND COOLING SYSTEM FOR HAZARDOUS ENVIRONMENTS

摘要

A heating and cooling apparatus for hazardous environments is disclosed. The apparatus has a housing having an air inlet and an air outlet. The apparatus further comprises a motor having a shaft and an electrical component and a metallic impeller having an impeller inlet and blades. The impeller inlet faces the air inlet of the housing and the impeller is coupled to the shaft of the motor. The apparatus also has an air filter removably positioned at the air inlet of the housing. A coil is removably positioned inside the housing between the air outlet and the impeller blades. A valve is also coupled to the coil, the valve being operable to regulate the temperature of the coil by controlling the flow of fluid into the coil.