AIR BLOWING DEVICE
PROBLEM TO BE SOLVED: To miniaturize an air blowing device for ventilating device and air conditioning device having a duct system, and to lower the noise. SOLUTION: This air blowing device is formed so that an axial air flow is formed in a cylindrical casing 2 by the rotation of vanes 5, 6 installe...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To miniaturize an air blowing device for ventilating device and air conditioning device having a duct system, and to lower the noise. SOLUTION: This air blowing device is formed so that an axial air flow is formed in a cylindrical casing 2 by the rotation of vanes 5, 6 installed in a rotary shaft of a motor 4 supported inside of the cylindrical casing 2, of which both ends are opened. In this air blowing device, a sound absorbing material is adhered to the periphery of the cylindrical casing 2 so as to form a sound absorbing layer 11, and the periphery of this sound absorbing layer 11 is covered with a sound insulating case 13, and the peripheral surface of the cylindrical casing 2 is provided with opening parts 9 communicated with the sound absorbing layer 11. |
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