| 摘要 |
A vacuum cleaner, comprising a casing (1), a motor outer cover (2) inside the casing, a motor inner cover (3) and sound absorption wool (4) both located inside the motor outer cover; a first air inlet opening (11) and a first air exhaust opening (12) are provided on the casing; a second air inlet opening (21) communicating with the first air inlet (11) opening is provided on the motor outer cover; a first circulating air duct (5) is formed between the upper portion of the motor outer cover and the casing, and one end of the first circulating air duct communicates with the first air exhaust opening; a second circulating air duct (6) is formed between the lower portion of the motor outer cover and the motor inner cover; a plurality of sound absorption holes (31) are provided on the motor inner cover, and one end of the second circulating air duct communicates with the plurality of sound absorption holes; the sound absorption wool is located within the second circulating air duct, and at least one ventilation hole is provided where the sound absorption wool directly faces the sound absorption holes. The sound absorption wool of the vacuum cleaner can reduce the air flow rate and noise caused by an air flow impacting the channel wall, while solving the problems of the sound absorption wool blocking an air flow, as well as the resultant excessively high temperature and low suction performance. |
