Patent ID: 7731769
Filing Date: 2010-06-08
Classification: A47L

Abstract:
1. A cyclonic dust collection unit comprising: a dust collection body; a first filtering chamber, disposed within the dust collection body, to filter a first type of foreign object(s) having a first size using a cyclone airflow; a second filtering chamber, disposed within the dust collection body, to filter a second type of foreign object(s) having a second size smaller than the first size, the second type of foreign object(s) being contained in the air passed through the first filtering chamber; a first foreign object storing chamber for storing filtered object(s) separated through the first filtering chamber, the first foreign object storing chamber provided with a first chamber seal member adapted to releasably seal the first foreign object storing chamber, the first foreign object chamber having a side defined by at least a portion of the dust collection body and a bottom defined by the first chamber seal member; a second foreign object storing chamber for storing filtered object(s) separated through the second filtering chamber, the second foreign object storing chamber provided with a second chamber seal member adapted to releasably seal the second foreign object storing chamber, the second foreign object storing chamber having a bottom defined by the second chamber seal member, the bottom of the second foreign object storing chamber being above the bottom of the first foreign object storing chamber; a connection structure adapted to connect the first and second chamber seal members, the connection structure comprising a plurality of spacers distinct from the dust collection body and extending between a top surface of the first chamber seal member and a bottom surface of the second chamber seal member, and configured such that the first and second chamber seal members release from the first and second foreign object storing chambers, respectively, as one structure; a filter disposed in the first filtering chamber and having a plurality of apertures, for separating the first type of foreign object(s) at an outer surface thereof; a separation plate disposed on the upper portion of the filter, the separation plate having a communication hole through which the air directed from the filter is exhausted; an insertion portion formed at a lower part of the filter; a blocking member disposed under the filter to prevent filtered foreign objects from flying, the blocking member having an opening adapted to receive the filter insertion portion; a plurality of airflow preventing plates disposed in a radial direction formed on the bottom of the blocking member to prevent the cyclone airflow from reaching the settled foreign objects, and a cutaway hole formed on the filter, having a length that is greater than a width thereof, and extending along a length of the filter.