Dust-container assembly of vacuum cleaner

Abstract

A dust container assembly for a vacuum cleaner. The dust container assembly includes: a casing having an intake port formed at one side thereof and an outlet port formed at the other side thereof, and provided therein with an inlet guide member therein corresponding to the outlet port such that a vortex can be generated by introduced air; an operation unit provided at the outlet port side and inducing foreign substances and air to be suctioned through the intake port; and a filter unit disposed inside the casing, filtering out foreign substances from air introduced through the intake port and flowing to the outlet port, and having a shape gradually decreasing in diameter with increasing distance from the outlet port. The dust container assembly includes a multifunctional filter disposed on a cone type protector fixedly mounted inside a dust container to filter out various foreign substances suctioned into the dust container while allowing pure air to be discharged through removal of various gases and smells contained in suctioned substances, and employs a sound absorption pad to reduce noise caused by operation of a fan motor for suction of air and foreign substances.

What is claimed is: 
     
         1 . A dust container assembly for a vacuum cleaner, comprising:
 a casing having an intake port formed at one side thereof and an outlet port formed at the other side thereof, the casing being provided with an inlet guide member inside thereof corresponding to the outlet port such that a vortex can be generated by introduced air;   an operation unit provided at the outlet port side and inducing foreign substances and air to be suctioned through the intake port; and   a filter unit disposed inside the casing, filtering out foreign substances from air introduced through the intake port and flowing to the outlet port, and having a shape gradually decreasing in diameter with increasing distance from the outlet port.   
     
     
         2 . The dust container assembly according to  claim 1 , wherein the operation unit comprises:
 a housing supported by a bottom of the casing and configured to allow air to pass therethrough;   a fan motor member disposed inside the housing and blowing air;   an inner cap member covering the fan motor member to provide sound insulation and configured to allow air to pass therethrough;   a sound absorption pad disposed on a circumferential surface of the inner cap member to provide sound absorption; and   an outer cap member covering the inner cap member and the sound absorption pad to provide sound insulation.   
     
     
         3 . The dust container assembly according to  claim 2 , wherein the sound absorption pad has an embossed pattern formed on an inner surface thereof. 
     
     
         4 . The dust container assembly according to  claim 1 , wherein the filter unit comprises:
 a protector having a net-like shape to allow air to pass therethrough and formed of hard materials, the protector having a diameter gradually decreasing from top to bottom;   a filtration member supported by at least one of inner and outer sides of the protector in a face-to-face manner to be maintained in shape and filtering out introduced foreign materials; and   a mounting portion for fixing the protector supporting the filtration member to the casing.   
     
     
         5 . The dust container assembly according to  claim 4 , wherein the mounting portion comprises:
 a mounting protrusion protruding from the bottom of the casing;   at least one pair of first rotation preventing protrusions facing each other and protruding from and along an edge of the mounting protrusion; and   a second rotation preventing protrusion extending from the protector and engaged with the first rotation preventing protrusions to prevent rotation of the protector.   
     
     
         6 . The dust container assembly according to  claim 4 , wherein the casing is provided with a gasket on an upper inner surface thereof adjoining the protector or the filtration member to prevent leakage of foreign substances. 
     
     
         7 . The dust container assembly according to  claim 4 , wherein the circumferential surface of the protector is inclined at different angles to ensure a desired flow rate of air through a space between the protector and the inlet guide member.