Upright-type vacuum cleaner having a cyclone dust collecting apparatus

• US 20030200622A1
• Filed: 05/13/2003
• Published: 10/30/2003
• Est. Priority Date: 06/16/2000
• Status: Active Grant

• Current Assignee: Jang-Keun Oh, Kyu-Chang Park
• Original Assignee: Jang-Keun Oh, Kyu-Chang Park
• Inventors: Oh, Jang-Keun, Park, Kyu-Chang
• Granted Patent: US 6,766,557 B2
• Time in Patent Office: Days
• US Class Current: 15/353
• CPC Class Codes: A47L 5/28 Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle A47L5/24 takes precedence
• CPC Class Codes: A47L 9/1633 Concentric cyclones
• CPC Class Codes: A47L 9/1666 with filtering means
• CPC Class Codes: B04C 5/10 with perforated walls
• CPC Class Codes: B04C 5/12 Construction of the overflow ducting, e.g. diffusing or spiral exits
• CPC Class Codes: B04C 5/26 for series flow
• CPC Class Codes: Y10S 55/03 Vacuum cleaner

Abstract

An upright-type vacuum cleaner includes a cleaner body having a dust collecting chamber and a motor driving chamber, a suction brush, and a cyclone dust collecting device removably mounted on the dust collecting chamber. The cyclone dust collecting device includes a cover, first and second cyclone bodies for centrifuging and collecting contaminants entrained in the air, a lower door, and an outlet pipe. The second cyclone body includes a grill having a plurality of perforations formed therein to filter out small particle contaminants. The lower door is removably mounted on a lower end of the first cyclone body, and the outlet pipe discharges the clean air. The cyclone dust collecting device prevents a backflow of contaminants, thereby, collecting contaminants are more effectively.

Claims

1. An upright-type vacuum cleaner comprising:

a cleaner body including a dust collecting chamber and a motor driving chamber, the dust collecting chamber having a first inlet port and a first outlet port, the motor driving chamber being connected to the first outlet port;

a suction brush movably connected to the cleaner body; and

a cyclone dust collecting means removably mounted in the dust collecting chamber for centrifuging and collecting contaminants entrained in air that is drawn in through the suction brush, the cyclone dust collecting means including;

a cover;

a first cyclone body coupled to the cover, the first cyclone body having a second inlet port corresponding to the fist inlet port for inducing the air and contaminants into a vortex and collecting contaminants of relatively large particles by centrifugation;

a second cyclone body coupled to the cover and disposed inside of the first cyclone body, the second cyclone body including a grill having a plurality of perforations through which reverse-ascending air from a bottom of the first cyclone body flows, and a third inlet port for inducing the air from the grill into a vortex;

a lower door removably mounted on a lower end of the first cyclone body, the lower door having a second outlet port corresponding to the first outlet port; and

an outlet pipe connected to the second outlet port for discharging the air from the second cyclone body.

2. The upright-type vacuum cleaner as claimed in claim 1, further comprising an air collector coupled to the cover and disposed between the outlet pipe and the second cyclone body, the air collector preventing the air drawn in through the third inlet port from flowing directly into the outlet pipe.

3. The upright-type vacuum cleaner as claimed in claim 2, wherein the air collector further comprises a skirt section having a gradually decreasing diameter toward the lower door.

4. The upright-type vacuum cleaner as claimed in any one of claims 1 to 3, further comprising an air circulate path connecting the motor driving chamber with the suction brush, the air circulate path circulating the air discharged from the motor driving chamber into the suction brush and the first air inlet port.

5. The upright-type vacuum cleaner as claimed in any one of claims 1 to 3, wherein the first inlet port is formed in an upper portion of the dust collecting chamber, and the first outlet port is formed in the bottom of the dust collecting chamber.

6. An upright-type vacuum cleaner comprising:

a cleaner body including a dust collecting chamber and a motor driving chamber, the dust collecting chamber having a first inlet port and a first outlet port, the motor driving chamber being connected to the first outlet port;

a suction brush movably connected to the cleaner body; and

a cyclone dust collecting means removably mounted in the dust collecting chamber for collecting contaminants entrained in the air which is sucked through the suction brush, the cyclone dust collecting means including;

a cyclone body having a second inlet port corresponding to the first inlet port, and a second outlet port corresponding to the first outlet port, the cyclone body inducing air which is drawn in through the second inlet port, together with contaminants into a vortex; and

a dust collecting receptacle removably disposed in the cyclone body for collecting contaminants entrained in the air by centrifugation of the vortex of air.

7. The upright-type vacuum cleaner as claimed in claim 6, wherein the cyclone body comprises:

an upper body having a second inlet port, and

a lower body connected to the cyclone body and having a second outlet port.

8. The upright-type vacuum cleaner as claimed in any one of claims 6 or 7, wherein the first inlet port is formed in an upper portion of the dust collecting chamber, the first air outlet port is formed in the bottom of the dust collecting chamber, and an outlet pipe is disposed outside of the cyclone body, the outlet pipe connecting the first outlet port with the second outlet port.

9. The upright-type vacuum cleaner as claimed in claim 8, further comprising a grill having a plurality of perforations, the grill being connected to the second outlet port and formed in the dust collecting receptacle, the grill preventing a backflow of the contaminants when the air is drawn into the second outlet port.