Cleaning device generating two suction flows

Patent metadata

Field	Value
Publication number	US-9863441-B2
Application number	US-201514686940-A
Country	US
Kind code	B2
Filing date	Apr 15, 2015
Priority date	Apr 16, 2014
Publication date	Jan 9, 2018
Grant date	Jan 9, 2018

Abstract

A cleaning device includes an air flow generator for generating an air flow, which encompasses a first suction flow through a first suction line, which is arranged in flow direction of the air flow upstream of the air flow generator and which leads into a first collecting container, and a pressure flow in a pressure line, which is arranged in flow direction of the air flow downstream from the air flow generator. Using a Venturi nozzle, the air flow generates a second suction flow, which is separated from the first suction flow, through a second suction line, which leads into a second collecting container.

First claim

What is claimed is:

1. A cleaning device comprising an air flow generator for generating an air flow, which can generate a first suction flow in a first suction line, which is arranged in a flow direction of the air flow upstream of the air flow generator and which leads into a first collecting container, and a pressure flow in a pressure line, which is arranged in the flow direction of the air flow downstream from the air flow generator,
wherein the cleaning device has a first nozzle arrangement causing the air flow to generate a second suction flow, which is separated from the first suction flow, through a second suction line, which leads into a second collecting container,
wherein the pressure line and a suction channel, which guides the second suction flow, lead into the first nozzle arrangement,
wherein the first suction line and the second suction line each has a respective free end,
wherein the free end of the first suction line or of the second suction line has a second nozzle arrangement for collecting moisture from a surface, and
wherein the free end of the other of the first suction line and the second suction line has a third nozzle arrangement to absorb solid particles.

2. The cleaning device according to claim 1 , wherein kinetic energy of the second suction flow can be gained from kinetic energy of the pressure flow.

3. The cleaning device according to claim 1 ,
wherein the first nozzle arrangement comprises a Venturi nozzle arrangement.

4. The cleaning device according to claim 1 , wherein a pressure flow outlet nozzle, through which the pressure flow escapes in the direction of extension of the suction channel, leads into the suction channel, which guides the second suction flow.

5. The cleaning device according to claim 1 , wherein the pressure flow encompasses a flow direction and wherein provision is made for an opening, which leads into a cross section-reducing area of the first nozzle arrangement transversely to the flow direction of the pressure flow of the suction channel, which guides the second suction flow.

6. The cleaning device according to claim 1 , wherein the cleaning device is a self-propelled suction robot.

7. A cleaning device comprising an air flow generator for generating an air flow, which can generate a first suction flow in a first suction line, which is arranged in a flow direction of the air flow upstream of the air flow generator and which leads into a first collecting container, and a pressure flow in a pressure line, which is arranged in the flow direction of the air flow downstream from the air flow generator,
wherein the cleaning device has a first nozzle arrangement causing the air flow to generate a second suction flow, which is separated from the first suction flow, through a second suction line, which leads into a second collecting container,
wherein the pressure line and a suction channel, which guides the second suction flow, lead into the first nozzle arrangement, and
wherein one of the first and second collecting containers is provided for separating dry particles from the first or second suction flow, and the respective other collecting container is provided for separating droplets from the respective other suction flow.

8. The cleaning device according to claim 7 , wherein the first suction line and the second suction line each has a respective free end,
wherein the free end of the first suction line or of the second suction line has a second nozzle arrangement for collecting moisture from a surface, and
wherein the free end of the other of the first suction line and the second suction line has a third nozzle arrangement to absorb solid particles.

Assignees

• Vorwerk Co Interholding

Inventors

• Eidmohammadi Nazli
• Siegfanz Alexander
• Stehl Christian
• Hoffmann Sabrina
• Sernecki Miron

Classifications

• A47L7/0009

  with means mounted on the nozzle; nozzles specially adapted for the recovery of liquid · CPC title

• A47L9/00

  Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners · CPC title

• A47L9/1409

  Rigid filtering receptacles (dust collecting receptacles for cyclones A47L9/1683) · CPC title

• A47L5/18

  with ejectors, e.g. connected to motor vehicle exhaust · CPC title

• A47L5/22

  with rotary fans · CPC title