Patent ID: 7540894

Claim:
A subsection dedusting device for a vacuum cleaner comprising: an upper cyclone separator including: a wind outlet; a cylinder dust cup having a cyclone wind inlet, and a cylinder filter cover with pores thereon coaxially arranged in said cylinder dust cup, wherein top end openings of said cylinder dust cup and said cylinder filter cover are sealed by a top cover, and a bottom end opening of said cylinder filter cover is located at a lower end of the cylinder dust cup and functions as the wind outlet of said upper cyclone separator, a side portion of said cylinder dust cup defining a dust collecting opening in communication with a dust collecting barrel; several lower cyclone separators located below said upper cyclone separator, wind inlets of said lower cyclone separators being in fluid communication with the wind outlet of said upper cyclone separator, wherein said lower cyclone separators include: a conical barrel and a cylinder barrel having a cyclone wind inlet, and said cylinder barrel is connected to a small end of said conical barrel; a wind outlet tube is coaxially mounted in said cylinder barrel; and an umbrella reflecting plate positioned at lower portion of said conical barrel, and a refluence hole defined at the center of said umbrella reflecting plate, and a ring gap for dropping-dust is defined between the peripheral of said umbrella reflecting plate and a side wall of said conical barrel, and a bottom of said conical barrel being connected to said dust collecting barrel, and a bottom cover is arranged below several said dust collecting barrels; and a wind outlet cover provided between said upper cyclone separator and said several lower cyclone separators, and a wind exhaust tube provided in the side face of said wind outlet cover, and said wind outlet tubes are located in respective cylinder barrels at an upper portion of said lower cyclone separators upwardly communicated with said wind outlet cover, wherein said several cylinder barrels are connected with each other side by side to form a wind guiding member, and said cyclone wind inlets on said cylinder barrels communicated with said wind guiding member, said wind outlet of said upper cyclone separator extending below through said wind outlet cover to be communicated with said wind guiding member.