WO1992011794A1

WO1992011794A1 - Cleaner

Info

Publication number: WO1992011794A1
Application number: PCT/SE1991/000009
Authority: WO
Inventors: Åke JOHANSSON
Original assignee: Vest Nova Ab
Priority date: 1989-10-18
Filing date: 1991-01-07
Publication date: 1992-07-23
Also published as: SE8903427L; SE8903427D0

Abstract

The invention concerns a cleaner comprising a suction nozzle (1) having a movable cleaning disk (12) and a suction pipe (5) which is in communication with a source of suction power. The cleaner comprises a driving mechanism (10) for propelling the cleaning disk (12), the latter being arranged, while performing an oscillating movement, to effect a surface treatement in contact against the surface. The driving mechanism is a turbine wheel (10) which is driven by a current of suction air generated by the source of suction power. The cleaning disk (12) is mounted on the rotational shaft (1) of the turbine wheel (10) and the turbine wheel (10) is provided with an eccentrically positioned weight (13) which is arranged to cause said cleaning disk to oscillate in its own plane.

Description

CLEANER

The subject invention concerns a cleaner comprising a suction nozzle having a movable cleaning disk. A suction pipe is interconnected with the suction nozzle and is in communication with a source of suction power. The cleaning disk is set in motion by a driving mechanism and is arranged to perform a surface treatment of e.g. floors and similar surfaces.

From SE-C-7701104-7 is previously known a cleaner of this kind. In order to set the cleaning disk in motion this prior art cleaner uses a driving mechanism which comprises several rotary shafts and gears. Consequently, the structure is unnecessarily complicated, with the result that the cleaner becomes expensive and is not always as reliable as one would desire. The purpose of the subject invention is to provide a cleaner of the type outlined in the preamble, which combines a very simple structure with a high degree of operational reliability. The characterising features of this cleaner are set for in the appended claims. The invention will be described in closer detail in the following with reference to the accompanying drawings, wherein

Fig. 1 is a perspective explosive view of the cleaner, Fig. 2 is a vertical longitudinal sectional view through the cleaner, and

Fig. 3 is a vertical sectional view through a part of the device.

The cleaner in accordance with the invention com- prises a suction nozzle 1, having a cover 2 and a sealing rim 3 extending circumferentially around said components. A joint member 4 interconnects the suction nozzle 1 with a suction pipe 5 which in turn communicates with a source of suction power, not shown. A partition wall 6 separates the suction pipe 5 internally into two channels 7 and 8.

In the interior of a housing 9 above the suction nozzle 1 a turbine wheel 10 is rotationally mounted for movement about a vertical shaft 11. A cleaning disk 12 is supported on the same shaft 11 underneath the suction nozzle 1 for turning movement about said shaft. On the lower face of the turbine wheel 10 is provided a weight 13, whereby upon rotation of the turbine wheel 10 a vibrational movement is generated with the result that the cleaning disk 12, when co-rotating therewith, will perform an oscillating movement. Cleaning of corner spaces thus is made more efficient.

At its front part the suction nozzle 1 is provided with the number of suction apertures 14. Through these apertures 14 dust and dirt are sucked into the cleaner. Air inlets 15 are provided in the cover 2 through which air is sucked in to drive the turbine wheel 10. On the upper part of the cleaner, not illustrated in the drawings, a control mechanism in accordance with prior art is provided to allow the cleaner to be reset from an operational position for suction through channel 7 to suction through channel 8 and vice versa. When the control mechanism is set in position for suction through channel 7 the air will be sucked-in through the air inlets 15, flow past the turbine blades 16 on the turbine wheel 10, through a centrally located opening 17 in the housing 9 and into the channel 7, as illustrated by arrows 18 in Fig. 1. When the control mechanism is set in position for suction through channel 8 air will instead be sucked- in through the apertures 14 and flow around the turbine housing 9, as illustrated by black arrows 19, upwards through the channel 8. In this position the turbine wheel 10 and the cleaning disk 12 are immobile.

Control means 20 are provided adjacent the air inlets 15 in the cover 2 by means of which the direction of the suction air towards the blades 16 of the turbine 10 may be changed and thus the speed of rotation of the turbine wheel be regulated. The cleaner in accordance with the invention has a very simple structure while at the same time it is extremely versatile. For instance it may be used for simple suction cleaning as well as for scrubbing and scouring flooring of various kinds. Owing to the posi- bility of regulating the speed of the turbine wheel 10 it is possible, at all times, to adjust the speed of the oscillatory movement of the cleaning disk 12 in dependence of the type of cleaning disk 12 that is being used as well as of the type of flooring to be cleaned.

The invention is not limited to the embodiment as illustrated and described but several variations are possible within the scope of the appendant claims. The suction nozzle 1 may have a different shape from that shown and this goes also for the configuration and arrangement of the air intakes 15 and the control means 20.

Claims

A cleaner, comprising a suction nozzle having a movable cleaning disk (12), a suction pipe (5) which is interconnented with the suction nozzle (1) and which is in communication with a source of suction power, and a driving mechanism (10) in the form of a turbine wheel (10) which is driven by a current of suction air and which supports the cleaning disk (12) on its rota- tional shaft (11), said driving mechanism arranged to set said cleaning disk (12) in motion in order to allow said disk to perform a surface treatment by its friction against the surface, c h a r a c t e r i s e d in that the turbine wheel (10) is provided with an eccentrically positioned weight (13) which causes said cleaning disk (12) to oseillate in its own plane.