Vacuum cleaner

Patent metadata

Field	Value
Publication number	US-9351620-B2
Application number	US-201313895041-A
Country	US
Kind code	B2
Filing date	May 15, 2013
Priority date	Nov 16, 2010
Publication date	May 31, 2016
Grant date	May 31, 2016

Abstract

A vacuum cleaner is provided with a dirt collection container and a suction head which can be placed on the dirt collection container, wherein the suction head has at least one suction unit which is in flow communication with the dirt collection container via a suction duct and a filter device and with at least one exhaust air opening via at least one exhaust air duct. To provide high suction capacity, a compact construction, and relatively little generation of noise during operation, the suction head has two suction units arranged next to one another, positioned in a vertical direction at the same level as the filter device and surrounded by a common exhaust air chamber, wherein the exhaust air chamber is in flow communication with exhaust air openings via a first and a second exhaust air duct and the filter device is arranged between the two exhaust air ducts.

First claim

That which is claimed:

1. A vacuum cleaner with a dirt collection container and a suction head adapted to be placed on the dirt collection container,
wherein the suction head has at least one suction unit in flow communication with the dirt collection container via a suction duct and a filter device and with at least one exhaust air opening via at least one exhaust air duct,
wherein the suction head has two suction units arranged next to one another, said suction units being positioned at the same level as the filter device in a vertical direction and surrounded by a common exhaust air chamber,
wherein the exhaust air chamber is in flow communication with exhaust air openings via a first and a second exhaust air duct and the filter device is arranged between the two exhaust air ducts,
wherein the suction head has a bottom wall, an exhaust air cover defining the exhaust air chamber in combination with the bottom wall being seated on said bottom wall, and
wherein two extensions are integrally formed on the exhaust air cover and define the exhaust air ducts in combination with the bottom wall.

2. The vacuum cleaner as defined in claim 1 , wherein the two suction units are of an identical construction.

3. The vacuum cleaner as defined in claim 1 , wherein the two suction units are aligned vertically.

4. The vacuum cleaner as defined in claim 1 , wherein the filter device has a flat-fold filter.

5. The vacuum cleaner as defined in claim 1 , wherein a filter cleaning device is arranged above the filter device.

6. The vacuum cleaner as defined in claim 1 , wherein the exhaust air ducts are of a straight line configuration.

7. The vacuum cleaner as defined in claim 1 , wherein the exhaust air ducts are aligned horizontally.

8. The vacuum cleaner as defined in claim 1 , wherein the exhaust air chamber and/or the exhaust air ducts are lined with an insulating material at least in sections.

9. The vacuum cleaner as defined in claim 1 , wherein the exhaust air chamber surrounds the suction units completely in circumferential direction.

10. The vacuum cleaner as defined in claim 1 , wherein the exhaust air cover has two openings each penetrated by a suction housing, wherein the suction housings each accommodate a suction unit and a vibration-insulating material is arranged between the suction housings and the exhaust air cover.

11. The vacuum cleaner as defined in claim 10 , wherein the suction housings are detachably connected to the bottom wall.

12. The vacuum cleaner as defined in claim 1 , wherein the suction head has an outer covering covering the exhaust air cover.

13. The vacuum cleaner as defined in claim 1 , wherein the suction duct has a duct section extending vertically, said section being arranged between the filter device and the exhaust air cover.

Assignees

• Kaercher Gmbh & Co Kg Alfred

Inventors

• FRANK Jürgen
• Langen Kai Thorsten
• Hensel Maic

Classifications

• A47L9/0081

  Means for exhaust-air diffusion; Means for sound or vibration damping · CPC title

• A47L9/122

  flat · CPC title

• A47L5/22 Primary

  with rotary fans · CPC title

• A47L9/14 Primary

  Bags or the like; {Rigid filtering receptacles;} Attachment of, or closures for, bags {or receptacles} · CPC title

• A47L5/365

  of the vertical type, e.g. tank or bucket type · CPC title