| 摘要 |
PROBLEM TO BE SOLVED: To provide a backpack type blower capable of improving air discharge capacity while restricting sound noise generated during its operation.SOLUTION: A backpack type blower comprises a fan including motors 12A, 12B and DC power supplies 50A, 50B for supplying electrical power individually to each of motors for fans and the blower is constituted to discharge wind blown from each of the fans. Each motor is driven by its exclusive driving controllers 60A, 60B. A concentration management controller 40 sets a rotational speed of each motor in response to instructions from various switches 22, 24 installed at a handle part 20 and outputs a speed instruction to driving controllers.SELECTED DRAWING: Figure 4 |
