PURPOSE: To provide the subject device wherein exhaust gas from a dusting room or a spray room is returned to the air intake port of an air conditioner, thereby to reduce the air conditioning cost.
CONSTITUTION: The open air passes through a gallery 51, primary filter 52, a secondary filter 53, a cooling coil 54, and an air washer 55 spraying hot water or cool water, said parts being included in the open air intake portion of an air conditioner 50, and is supplied by means of a blast fan 57 through a blast dust 58, a blast chamber 11, and a ceiling filter 12 to a dusting room 10. Air flowing at the lower part in the dusting room 10 passes through a hurdle 14, and is returned to the open air intake port of the air conditioner 50 through an exhaust dust 17 and a connecting pipe 18 by an exhaust fan 16, and energies possessed by returning and exhausting of air can be effectively utilized.
OGAWA ATSUSHI
WAKIZAKA KENJI
TAIKISHA KK