Title:
LEAF BLOWER
Document Type and Number:
WIPO Patent Application WO/2022/068825
Kind Code:
A1
Abstract:
A leaf blower, wherein an air inlet shield is connected to an axial air inlet, and comprises a plurality of shield holes for an air flow to pass through. The sum of the ventilation area of the plurality of shield holes defines the total effective ventilation area of the air inlet shield. An extension rod extends in the longitudinal direction, and an operating handle and an air duct part are pulled apart from each other in the longitudinal direction by means of the extension rod. The linear velocity of a blade edge of an axial fan is greater than 80 m/s, and the total effective ventilation area of the air inlet shield is less than 12000 mm2. By means of the limitation of the total effective ventilation area of the air inlet shield and the reasonable configuration of motor parameters, low power consumption can be achieved, the endurance time of a direct-current battery pack can also be met, and the wind speed and volume are ensured so as to obtain a better blowing efficiency and blowing effect.
Inventors:
YU XUEFENG (CN)
DUAN FENGWEI (CN)
DUAN FENGWEI (CN)
Application Number:
PCT/CN2021/121354
Publication Date:
April 07, 2022
Filing Date:
September 28, 2021
Export Citation:
Assignee:
POSITEC POWER TOOLS SUZHOU CO LTD (CN)
International Classes:
E01H1/08
Foreign References:
| CN111749912A | 2020-10-09 | |||
| CN111749175A | 2020-10-09 | |||
| CN212717246U | 2021-03-16 | |||
| CN212129012U | 2020-12-11 | |||
| CN104248394A | 2014-12-31 | |||
| CN205046514U | 2016-02-24 | |||
| DE202017106572U1 | 2018-01-31 | |||
| CN202011053850A | 2020-09-29 | |||
| CN202011425445A | 2020-12-08 |
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