Air outlet cover assembly of dust collector and dust collector with same

Abstract

The invention relates to an air outlet cover assembly of a dust collector and the dust collector with same, the air outlet cover assembly comprises an air outlet cover, an air duct is defined in the air outlet cover, the air duct is provided with an air inlet and an air outlet, the air inlet is suitable for being communicated with an air outlet of a motor cover of the dust collector, and the air outlet is suitable for being communicated with the external environment; a silencing assembly is arranged in the air duct and comprises a micro-perforated plate, a plurality of micro-perforations penetrating through the micro-perforated plate in a thickness direction of the micro-perforated plate are formed in the micro-perforated plate, and the multiple micro-perforations are arranged at intervals; a back plate is provided with at least one back cavity, each back cavity is provided with a communication port, the micro-perforated plate is arranged on the side, provided with the communication port, of the back plate, and the communication port of each back cavity is opposite to the at least one micro-perforated hole, so that each back cavity is communicated with the at least one micro-perforated hole. According to the air outlet cover assembly, the sound attenuation and noise reduction effects are good, and therefore noise generated when the dust collector works can be better reduced, and the overall quality and user experience of the dust collector are improved.

Description

technical field [0001] The invention relates to the technical field of vacuum cleaners, in particular to an air outlet hood assembly of a vacuum cleaner and a vacuum cleaner with the air outlet hood assembly. Background technique [0002] The vacuum cleaner includes a dust collection device, an air intake device and an exhaust device. The air intake device is located on the downstream side of the dust collection device. On the downstream side of the device, the exhaust device includes an outlet hood assembly. When the vacuum cleaner is working, the motor rotates to generate negative pressure in the motor cover, and the air with dust is sucked into the dust collecting device in a disorderly manner. The dust in the air enters the motor cover after being filtered, and finally returns to the atmosphere through the air outlet cover assembly. middle. [0003] Vacuum cleaners are a common household appliance, and their noise directly affects product quality and user experience. ...

AI Technical Summary

Problems solved by technology

[0004] For those skilled in the art, they generally pay more attention to the problem of noise reduction at the intake device, but they have not conducted in-depth research on the noise reduction at the exhaust device. The noise at the exhaust device is relatively large, which in turn affects the The overall quality and user experience of the vacuum cleaner

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