TORNADO TYPE INTAKE AND BLOWING DEVICE

摘要

A tornado type intake and blowing device, comprising an exhaust port (1a) communicating with an exhaust duct (2), an air supply chamber (4) which is provided so as to surround the exhaust port (1a) and to which air is supplied through an air supply inlet (5a) , and air blowing ports (3) blowing air supplied into the air supply chamber (4) by swirling the air from the outer periphery of the exhaust port (1a) diagonally downward, the air blowing ports (3) being provided in a side wall part (4b) of the air supply chamber (4), whereby the exhaust port can be formed in the entire area of the lower opening surface of the air supply chamber (4), the outside diameter of the air supply chamber (4) is sufficient if it is equal to an outside diameter corresponding to the required opening diameter of the exhaust port (1a) and, accordingly, a device body can be formed compact.