# US 5,350,432 A · Dirt filtering and collecting apparatus for vacuum cleaner

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- Number: US 5,350,432 A
- Document ID: US5350432A
- Status: Granted
- Kind: A
- Application number: 08/052,188
- Filed: 1993-04-22
- Granted: 1994-09-27
- Earliest claimed: 1992-04-23
- Assignees: Goldstar Co., Ltd.
- Inventors: Jae I. Lee
- Web page: https://patentgrep.com/patent/US5350432A

## CPC

- B01D 45/12: by centrifugal forces (centrifuges B04B; cyclones B04C)
- A47L 9/104: {Means for intercepting small objects}
- A47L 9/1608: {Cyclonic chamber constructions}
- A47L 9/1683: {Dust collecting chambers; Dust collecting receptacles}
- Y10S 55/03: Vacuum cleaner
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- A47L: DOMESTIC WASHING OR CLEANING (brushes A46B; cleaning quantities of bottles or of other hollow articles of one kind B08B9/00; laundry D06F); SUCTION CLEANERS IN GENERAL (cleaning in general B08)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

A dirt collecting apparatus for a vacuum cleaner which is adapted to decrease a volume of a canister body thereby facilitating a handling of the vacuum cleaner and which has a dirt container that is easily detached from the apparatus. The apparatus comprises a dirt collecting chamber connected between a wand and a handle pipe, a cyclone part inserted in the dirt collecting chamber which converts a linear flow in the dirt collecting chamber into a cyctonical flow, and a dirt container mounted on the outer surface of the dirt collecting chamber which receives the dirt separated in the dirt collecting chamber.

## Claims

### Claim 1

A dirt collecting apparatus for a vacuum cleaner, comprising;
a dirt collecting chamber which is in communication with an introduction path for dirt-laden air between a wand connected to a nozzle and a handle pipe connected to a canister body;
a cyclone part inserted in the dirt collecting chamber which comprises a cylindrical support fitted in the inner surface of the dirt collecting chamber, an inner cylinder, on which a plurality of cycloid guiding vanes are fixed and extend radially and outwardly therefrom, rotatably inserted in the cylindrical support, and a conical core inserted in the inner cylinder; and
a dirt container detachably mounted on the outer surface of the dirt collecting chamber which is adapted to receive dirt separated and collected in the dirt collecting chamber.

### Claim 2 (depends on 1)

A dirt collecting apparatus in accordance with claim 1, wherein said dirt collecting chamber is provided at its upstream end with a front connector to be connected to the wand and at its downstream end with a rear connector to be connected to the handle pipe, said dirt collecting chamber is formed at the outer surface with an opening for introducing dirt separated in the dirt collecting chamber into the dirt container, and said dirt collecting chamber is provided at its outer surface and at the front of the opening with a projection adapted to couple the dirt container to the dirt collecting chamber.

### Claim 3 (depends on 2)

A dirt collecting apparatus in accordance with claim 2, wherein said dirt container comprise a detachable box having an upper concave surface, said upper concave surface of said dirt container being partially cut to form a dirt guiding piece at a position corresponding to that of the opening and said dirt guiding piece being partially and inwardly bent to form a gap between the upper concave surface and the dirt guiding piece, and said dirt container is provided at its front end and under its upper concave surface with a groove so that said projection of said dirt collecting chamber is fitted in said groove in order to couple the dirt container to the dirt collecting chamber.