Vacuum cleaner

Patent metadata

Field	Value
Publication number	US-2019090707-A1
Application number	US-201816204215-A
Country	US
Kind code	A1
Filing date	Nov 29, 2018
Priority date	Oct 28, 2014
Publication date	Mar 28, 2019
Grant date	—

Abstract

A vacuum cleaner includes a first cyclone configured to separate dust from air introduced together with foreign objects from a lower side thereof and discharge the separated dust to a first dust storage chamber through an outlet provided at an upper portion thereof, a plurality of second cyclones arranged on an inner circumferential surface of the case and configured to separate fine dust from air which has passed through the first cyclone and discharge the separated fine dust to a second dust storage chamber differentiated from the first dust storage chamber, and a lower configured to form bottom surfaces of the first dust storage chamber and the second dust storage chamber.

First claim

1 . A vacuum cleaner comprising:
a first cyclone provided in a case forming an outer appearance of a dust collector device and configured to separate dust from air introduced together with foreign objects from a lower side thereof and discharge the separated dust to a first dust storage chamber through an outlet provided at an upper portion thereof; a plurality of second cyclones arranged on an inner circumferential surface of the case and configured to separate fine dust from air which has passed through the first cyclone and discharge the separated fine dust to a second dust storage chamber distinct from the first dust storage chamber; a lower cover coupled to the case by a hinge, configured to form bottom surfaces of the first dust storage chamber and the second dust storage chamber, and configured to be rotated by the hinge to simultaneously open the first dust storage chamber and the second storage chamber such that the dust and the fine dust are simultaneously discharged; an internal case formed to have an inner diameter smaller than that of the case and provided within the case; a ledge provided between the case and the inner case; and a steep inclined surface provided between the case and the inner case and extending between the ledge and the lower cover, wherein: the first cyclone includes a housing installed to be eccentric from a central axis of the case and configured to have an outlet configured to communicate with the first dust storage chamber, the first dust storage chamber is provided between the case, an inner surface of the inner case, a first portion of the housing, the ledge, and the steep inclined surface, and the second dust storage chamber is provided between the case, an outer surface of the inner case, a second portion of the housing, a upper surface of the ledge, and the steep inclined surface.

2 . The vacuum cleaner of claim 1 ,
wherein a mesh filter is installed within the housing, configured to extend in a direction parallel to a direction in which the housing extends, and configured to separate dust from air introduced to the interior of the housing.

3 . The vacuum cleaner of claim 2 , wherein an inner diameter of the mesh filter is gradually narrowed downwardly from an upper portion thereof.

4 . The vacuum cleaner of claim 1 , further comprising:
a dust flow channel formed in a space surrounded by the internal case and configured to link the outlet and the first dust storage chamber; and a fine dust flow channel formed between the internal case and the case and configured to link outlets of the plurality of second cyclones and the second dust storage chamber.

5 . The vacuum cleaner of claim 4 , wherein the second dust storage chamber is configured to store fine dust introduced through the fine dust flow channel after being discharged from the plurality of second cyclones.

6 . The vacuum cleaner of claim 4 , further comprising:
a connection flow channel configured to link an outlet of the first cyclone and inlets of the plurality of second cyclones in order to distribute a flow of air discharged from the first cyclone to the plurality of second cyclones; and a guide flow channel formed such that at least a portion thereof protrudes from the inlets of the plurality of second cyclones in order to guide a flow of air introduced to the plurality of second cyclones.

7 . The vacuum cleaner of claim 6 , further comprising:
a first partition plate configured to form a boundary between the connection flow channel and the dust flow channel in order to prevent air discharged from the first cyclone from being introduced to the first dust storage chamber; and a second partition plate configured to partition a space between the connection flow channel and an upper cover unit in order to prevent air discharged from the plurality of second cyclones from being introduced to the connection flow channel.

8 . The vacuum cleaner of claim 4 , wherein:
the ledge is configured to form a bottom surface of the fine dust flow channel and is configured to be sloped to induce a movement of fine dust discharged from the plurality of second cyclones to the fine dust flow channel, to the second dust storage chamber; and the steep inclined surface is configured to form a boundary between the first dust storage chamber and the second dust storage chamber together with the internal case, and to form a step between the fine dust flow channel and the second dust storage chamber.

9 . The vacuum cleaner of claim 1 , further comprising:
a compression plate configured to reciprocate within the case to compress dust collected to the first dust storage chamber to a region adjacent to the steep inclined surface.

10 . The vacuum cleaner of claim 9 , wherein the compression plate includes:
a blade configured to reciprocate to compress dust collected in the first dust storage chamber; a rotational shaft connected to the blade and configured to form a rotation central axis of the blade; and a base formed to be relatively rotatable with respect to the rotational shaft and coupled to an outer circumferential surface of the housing.

11 . The vacuum cleaner of claim 10 , wherein the base of the compression plate penetrates through the lower cover so as to be exposed to the outside of the dust collector device, and when the dust collector device is coupled to a vacuum cleaner body, the compression plate receives a driving force so as to be rotated.

12 . The vacuum cleaner of claim 1 , wherein the plurality of second cyclones extend in a direction parallel to a direction of the first cyclone.

13 . The vacuum cleaner of claim 1 , wherein the first cyclone and the plurality of second cyclones are arranged to form a circle.

14 . The vacuum cleaner of claim 1 , wherein an inlet of the dust collector device is formed at the lower cover to communicate with an inner space of the first cyclone, and provided to be eccentric from the center of the first cyclone in order to induce a gyrational movement of air introduced to the first cyclone.

15 . A vacuum cleaner comprising:
a first cyclone provided in a case forming an outer appearance of a dust collector device and configured to separate dust from air introduced together with foreign objects from a lower side thereof and discharge the separated dust to a first dust storage chamber through an outlet provided at an upper portion thereof; a plurality of second cyclones arranged on an inner circumferential surface of the case and configured to separate fine dust from air which has passed through the first cyclone and discharge the separated fine dust to a second dust storage chamber distinct from the first dust storage chamber; a lower cover coupled to the case by a hinge, configured to form bottom surfaces of the first dust storage chamber and the second dust storage chamber, and configured to be rotated by the hinge to simultaneously open the first dust storage chamber and the second storage chamber such that the dust and the fine dust are simultaneously discharged; an internal case formed to have an inner diameter smaller than that of the case and provided within the case; a ledge provided between the case and the inner case; and a steep inclined surface provided between the case and the inner case and extending between the ledge and the lower cover, wherein:
an air inlet to the first cyclone is provided on the lower cover, and is eccentric from a central axis of the first cyclone,
the first cyclone includes a housing having the outlet,
the first dust storage chamber is provided between the case, an inner surface of the inner case, a first p

Assignees

• Lg Electronics Inc

Inventors

• Hyun Kietak
• Lee Seungyeop
• Ahn Hyukjin

Classifications

• B04C5/28

  for parallel flow · CPC title

• A47L9/1625 Primary

  for series flow · CPC title

• A47L9/1683

  Dust collecting chambers; Dust collecting receptacles · CPC title

• B04C5/26

  for series flow · CPC title

• A47L9/1641

  for parallel flow · CPC title