| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem in safety and sanitation caused by that a fan of an air blowing fan unit cannot be cleaned by easily removing it in a conventional hot air type heater. SOLUTION: A fan assembly 5 constituted so that parts playing a role of preventing vibration of the air blasting fan unit 2 are not disconnected, is fixed with a tightening nut 18. Three surfaces or more of cut surfaces 4b are provided on a driving shaft 4a of a motor 4 fitted with a first spacer 9 of the fan assembly 5 and the fan assembly 5 can be easily fitted to the driving shaft 4a of the motor 4. A taper 9d of which a diameter is shrunk in an entrance direction is provided such that the driving shaft 4a of the motor 4 is easily inserted to the first spacer of the fan assembly 5. A guide surface 9e for guiding a tip end of the driving shaft 4a of the motor 4 is provided at an end of D shape cross section of the fitting hole 9c of the first spacer 9. COPYRIGHT: (C)2004,JPO
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