Grill assembly of a cyclone dust collecting apparatus for a vacuum cleaner

• US 20020178699A1
• Filed: 02/22/2002
• Published: 12/05/2002
• Est. Priority Date: 06/01/2001
• Status: Active Grant

• Current Assignee: Samsung Gwangju Electronics Co., Ltd. (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Gwangju Electronics Co., Ltd. (Samsung Electronics Co. Ltd.)
• Inventors: Oh, Jang-keun
• Granted Patent: US 6,599,339 B2
• Time in Patent Office: Days
• US Class Current: 55/337
• CPC Class Codes: A47L 9/1666 with filtering means
• CPC Class Codes: B04C 5/12 Construction of the overflow ducting, e.g. diffusing or spiral exits
• CPC Class Codes: B04C 5/13 formed as a vortex finder and extending into the vortex chamber exits with bulkheads preventing reverse flow vortex B04C3/00; Discharge from vortex finder otherwise than at the top of the cyclone; Devices for controlling the overflow
• CPC Class Codes: Y10S 55/03 Vacuum cleaner

Abstract

A grill assembly of a cyclone dust collecting apparatus for a vacuum cleaner capable of improving the capability of dust collecting of the vacuum cleaner by reducing the amount of the filth drawn into a vacuum-generating device through a grill. The grill assembly of a cyclone dust collecting apparatus for a vacuum cleaner is disposed at an upper part of an air discharging passage of a cyclone body that generates whirling air current from the air drawn thereinto and separates filth from the drawn air by a centrifugal force of the whirling air current. The grill assembly for preventing the filth from being drawn into a vacuum-generating device of the vacuum cleaner comprises a grill body, and a plurality of blades formed at a predetermined space for forming a passage along an outer circumference of the grill body. The passage is at an acute angle with a stream-line of the whirling air current, and each blade includes a protrusion member protruding from the outer circumference of the grill body to the outer part.

Claims

1. A grill assembly of a cyclone dust collecting apparatus for a vacuum cleaner, disposed at an upper part of an air discharging passage of a cyclone body that generates whirling air current from the air drawn thereinto and separates filth from the drawn air by a centrifugal force of the whirling air current, the grill assembly preventing the filth from being drawn into a vacuum-generating device of the vacuum cleaner, and comprising:

a grill body; and

a plurality of blades formed at a predetermined space for forming a passage along an outer circumference of the grill body, the passage formed at an acute angle with a stream line of the whirling air current, each blade including a protrusion member protruding from the outer circumference of the grill body to the outer part.

2. The grill assembly of the cyclone dust collecting apparatus of claim 1, wherein an upper end of the grill body is shielded by a separate shielding member, which is removably connected with the grill body.

3. The grill assembly of the cyclone dust collecting apparatus of claim 2, wherein the shielding member shifts the moving direction of the filth included in the air, which flows to the grill body, to the whirling air current.

4. A grill assembly of a cyclone dust collecting apparatus for a vacuum cleaner of claim 1, wherein a height of the protrusion member, a space between the blades, and an angle between the blades and the stream-line of the whirling air current are determined within a range that shades of the blades are not overlapped with each other when the blades are reflected to an imaginary cylinder coaxial with the blades.

5. A vacuum cleaner comprising a vacuum-generating device, a cyclone dust collecting apparatus, a grill assembly for the cyclone dust collecting apparatus, and being disposed at an upper part of an air discharging passage of a cyclone body that generates whirling air current from the air drawn thereinto and separates filth from the drawn air by a centrifugal force of the whirling air current, the grill assembly preventing the filth from being drawn into a vacuum-generating device of the vacuum cleaner, and comprising:

a grill body; and

a plurality of blades formed at a predetermined space for forming a passage along an outer circumference of the grill body, the passage formed at an acute angle with a stream line of the whirling air current, each blade including a protrusion member protruding from the outer circumference of the grill body to the outer part.

6. The vacuum cleaner of claim 5, wherein an upper end of the grill body is shielded by a separate shielding member, which is removably connected with the grill body.

7. The vacuum cleaner of claim 6, wherein the shielding member shifts the moving direction of the filth included in the air, which flows to the grill body, to the whirling air current.

8. The vacuum cleaner of claim 5, wherein a height of the protrusion member, a space between the blades, and an angle between the blades and the stream-line of the whirling air current are determined within a range that shades of the blades are not overlapped with each other when the blades are reflected to an imaginary cylinder coaxial with the blades.