Floor cleaning appliance

• US 20040074044A1
• Filed: 08/15/2003
• Published: 04/22/2004
• Est. Priority Date: 03/07/2001
• Status: Abandoned Application

• Current Assignee: Alfred Kã¤Rcher GmbH & Company KG
• Original Assignee: Alfred Kã¤Rcher GmbH & Company KG
• Inventors: Janzen, Jacob, Diehl, Ralph, Keppler, Joachim
• Application Number:
  US10/641,734
• Publication Number:
  US 20040074044A1
• Time in Patent Office: Days
• US Class Current: 15/412
• CPC Class Codes: A47L 11/202 having separate drive for the cleaning brushes
• CPC Class Codes: A47L 11/24 Floor-sweeping machines, motor-driven
• CPC Class Codes: A47L 11/4027 Filtering or separating contaminants or debris
• CPC Class Codes: A47L 11/4041 Roll shaped surface treating tools
• CPC Class Codes: A47L 11/4044 Vacuuming or pick-up tools; Squeegees
• CPC Class Codes: A47L 5/22 with rotary fans
• CPC Class Codes: A47L 9/22 Mountings for motor fan assemblies

Abstract

The invention relates to a floor cleaning appliance comprising a suction turbine with a turbine wheel rotatingly drivable about a turbine axis, and a substantially horizontally aligned suction channel via which the suction turbine is in flow communication with a suction opening facing the floor surface to be cleaned, with the suction channel forming a container for collecting dirt and accommodating a dirt filter. In order to design the floor cleaning appliance with as low an overall height as possible, while achieving as strong a suction flow as possible in the area of the suction opening, it is proposed, in accordance with the invention, that the suction turbine be mounted on the suction channel with its turbine axis aligned at an incline to the vertical.

Claims

1. Floor cleaning appliance comprising a suction turbine with a turbine wheel rotatingly drivable about a turbine axis, and a substantially horizontally aligned suction channel via which the suction turbine is in flow communication with a suction opening facing the floor surface to be cleaned, with the suction channel forming a container for collecting dirt and accommodating a dirt filter, wherein the suction turbine is mounted on the suction channel with the turbine axis aligned at an incline to the vertical.

2. Floor cleaning appliance in accordance with claim 1, wherein the turbine axis is aligned at an angle of from approximately 15°

to approximately 75°

to the vertical.

3. Floor cleaning appliance in accordance with claim 1, wherein the floor cleaning appliance has a rotatingly drivable rotary brush arranged in the area of the suction opening.

4. Floor cleaning appliance in accordance with claim 1, wherein the suction turbine is in the form of an axial-radial fan.

5. Floor cleaning appliance in accordance with claim 1, wherein the suction turbine has an outlet channel which opens into at least one air outlet opening, and the orifice area of which is aligned at an incline to the vertical.

6. Floor cleaning appliance in accordance with claim 5, wherein the outlet channel surrounds the turbine wheel in circumferential direction.

7. Floor cleaning appliance in accordance with claim 6, wherein the outlet channel is of spiral configuration and widens continuously in flow direction.

8. Floor cleaning appliance in accordance with claim 1, wherein the suction turbine comprises an electric external rotor motor with a stator which is held on a carrier element, and a rotor which is rotatable about the turbine axis and on which the turbine wheel is held in a rotationally fixed manner.

9. Floor cleaning appliance in accordance with claim 1, wherein the floor cleaning appliance is of automotive design.