EP1068827A2 - Floor cleaning device - Google Patents

Abstract

Cleaning head (140) comprises sawn-off cone-shaped cavity. Air spray nozzles (151) comes out in lower part of cavity. Dust extracting windows (161) are located in upper part of cavity. Vertical channels (131), feeding pressurized air to air spray nozzles, are also located in cleaning head. Due to spray nozzles, vortex effect is created inside cavity, close to floor to clean, so that solid or liquid particles are lifted and driven in cyclone inside cleaning head. Due to sawn-off cone-shape of cleaning head, particles are driven to top of cleaning head, to extracting windows, whilst particles discharged air is evacuated through nozzle (171). Nozzle is flared at top so as to ensure air flow distribution over filter (182) situated under suction intake (130A) of moto-ventilator (130).

Description

The subject of the present invention is a floor cleaner comprising a support plate for an electric motor-fan having a suction air inlet and pressurized air outlet, protective cover motor fan, a first cleaning head, and a first receptacle for recovering solid or liquid particles.

We already know various types of floor cleaners using a fan motor electric combined with suction and delivery allowing the projection of an air jet on the ground and the case if necessary, recycle this jet of air.

In known devices of this type, dust trapping or particles is, however, mainly provided in a conventional manner at filters quickly clogged.

In other known devices of the collector type, materials to pick up are dragged to a recovery container. In that case, at least part of the air drawn in is not recycled, but is rejected in the air.

We still know of cleaning devices combining a suction function and steam cleaning function. In this case, water and dust are trapped in a filtration tank but the air is released into the atmosphere, which does not prevent allergies for users taking into account for example particles or micro-organisms which are released into the atmosphere.

The present invention aims to remedy the drawbacks of the various apparatuses of the prior art and to make it possible to produce a floor cleaner integral capable of treating large areas while being designed simple, compact and modular allowing mass production at a low price, and guaranteeing an anti-allergy operation without rejection in the cleaned room with convenient and reliable use in particular without the use of paper bags for trapping dust or dirt.

These goals are achieved with a floor cleaner comprising a support plate for an electric fan motor having an inlet of suction air and a pressurized air outlet, a protective cover for the motor fan, a first cleaning head, and a first receptacle for recovering solid or liquid particles, characterized in that the first cleaning head comprises a first cavity frustoconical open downwards and including its small oriented base downwards, at least a first injection nozzle essentially tangential of pressurized air arranged in the lower part of the first cavity to create a vortex effect within this first cavity and at at least a first side window for particle extraction arranged in upper part of the first cavity and without communication with the air flow driven towards the intake of aspirated air; in that the first window of particle extraction communicates with the first receptacle of particle recovery, which first receptacle, apart from the presence of the first particle extraction window, is closed and without communication with the outside or the cleaning air circuit while the first pressurized air injection nozzle communicates with the outlet of pressurized air from the fan motor, and in that an air outlet formed through the large base of the first frustoconical cavity is in communication with the air intake of the fan motor so as to define an entirely recycled air circuit without exchange with the outside of the system.

According to the invention, a cyclone is thus created at ground level at clean, in a circular cavity. This rotating movement increases cleaning efficiency, in particular allowing detachment of dirt trapped in fibers, while facilitating the separation of particles compared to recycled air. The frustoconical cavity allows to rotate the loose particles of the surface to be cleaned, in an ascending circular motion. Separation of particles from the transfer air is effected by centrifugation effect due to the cyclone itself, without adding an additional device. This allows the recovery of particles in a chamber not crossed by the draft and therefore does not require a filter. The air circulation of closed-circuit cleaning and trapping of dirt in a receptacle closed particle recovery thus help prevent the return of particles in the ambient atmosphere.

According to a particular embodiment, the first head of cleaning includes first, second and third nozzles injection which essentially open tangentially in part lower part of the first frustoconical cavity and are spaced apart by 120 °, the first, second and third extraction windows which are formed in the upper part of the first frustoconical cavity, are spaced between them by 120 ° and are offset angularly respectively by compared to the first, second and third injection nozzles.

According to another particular embodiment, the first head of cleaning includes first and second injection nozzles which essentially open tangentially in the lower part of the first frustoconical cavity and are spaced apart by 180 ° and first and second extraction windows which are partly formed high of the first frustoconical cavity, and are spaced apart 180 °.

These embodiments can be applied to a number of multiple heads but are also particularly suitable for a simplified cleaning device with a single cleaning head.

In this case, advantageously the motor-fan is arranged vertically so that the intake air intake is located partly low and the pressurized air outlet is located at the top.

According to a particular embodiment, such a floor cleaner is characterized in that the cleaning head is located immediately below the fan motor with a central air outlet from the first cavity frustoconical located near the intake air intake of the fan motor and in that the pressurized air circulation supplying at minus the first injection nozzle runs from top to bottom between the motor fan and the outer cover.

The cleaner may include a safety filter associated with a perforated support plate interposed between said central air outlet of the first frustoconical cavity and the intake air of suction of the motor-fan.

Advantageously, first, second and third channels first, second and pressurized air supply verticals third injection nozzles are formed in the cleaning head in wall portions angularly offset from the first, second and third extraction windows.

According to another advantageous embodiment, the floor cleaner may include an auxiliary cooling air circuit for the engine motor-fan independent of the cleaning air circuit circulating at through the first cleaning head.

In this case, more particularly, the annex air circuit of motor cooling of the fan motor includes a fan annex located above the engine, an annex air inlet communication with the outside and provided at the top of the protective cover for the fan motor and an annex air outlet under pressure at the bottom of the motor fan protective cover above the motor fan support plate while the recycled cleaning air circuit includes an air inlet motor fan central intake located in the lower part above of the cleaning head and a side pressure air outlet arranged under the motor fan support plate.

The presence of an auxiliary engine cooling air circuit prevents the recycled cleaning air, which may be charged with humidity, crosses the engine and could possibly disturb the correct operation of it.

Although the dirt extraction windows are clearly separate from the air outlets of the cleaning heads, an additional device particle trapping can advantageously be arranged at the level from the air outlet of a cleaning head.

The floor cleaner according to the invention can comprise a removable recovery surrounding the common cover inside which are housed the motor-fan and the cleaning head.

In this case, as an option, the drip tray has two non-parallel vertical side walls that converge backwards and are fitted with squeegees or brushes.

According to a particular characteristic, the recovery tank is mounted on fixed or orientable rollers or casters.

According to another advantageous embodiment, the floor cleaner according to the invention comprises first and second cleaning heads with counter-rotating air movements.

Advantageously, such a cleaner comprises a sole in which are formed respectively for the first and second heads for cleaning the first and second tapered open cavities down, including a small base facing down and communicating with first and second recycling bins particles also produced in said sole.

More particularly, the sole includes a plate separable closing bottom, a set of profiled parts defining first and second air injection nozzles under pressure essentially tangential to the bottom of first and second frustoconical cavities, and first and second extraction windows ensuring communication between the part upper of the first frustoconical cavities and the first and second recovery tanks, these first and second extraction windows being angularly offset from the first and second injection nozzles.

According to another characteristic, the sole includes a well central application of pressurized air and exhaust air nozzles are arranged above the first and second frustoconical cavities through a sole closing plate.

Advantageously, the floor cleaner comprises a motor fan having a pressurized air outlet which is arranged at its lower part opposite the central well and a suction air inlet which is arranged in its upper part.

Air exhaust nozzles open into an annular cavity delimited between the fan motor and the protective cover.

According to a particular characteristic, a security filter associated with a perforated support plate is disposed between said annular cavity and the intake of aspirated air from the motor-fan.

In order to avoid a release of dust or debris into the atmosphere by when the device is raised from the ground, the first and second frustoconical cavities of the first and second heads of cleaning include an internal flange at their bottom.

In order to reinforce the trapping of particles in the recovery without hindering air recycling, the first and second collection bins include vertical partition walls provided with slots.

According to yet another embodiment of the invention, the floor cleaner includes first, second and third heads cleaning comprising first, second and third frustoconical cavities whose large base is located upwards and whose centers are arranged at the vertices of a triangle, it includes in addition a central pressurized air supply well to supply first, second and third spaced tangential injection nozzles angularly to introduce pressurized air in the form of a vortex in the same direction respectively at the bottom of the first, second and third frustoconical cavities, and first, second and third extraction windows formed respectively in the first, second and third spaced and offset frustoconical cavities angularly and in height with respect to the first, second and third injection nozzles for transferring particles respectively in first, second and third interposed collection bins between the first, second and third frustoconical cavities, and first, second and third discharge air extraction ports are provided at the central upper part respectively of the first, second and third frustoconical cavities for refueling the motor-fan in closed circuit.

Advantageously, the first, second and third orifices exhaust air are arranged at the top of a hat frusto-conical, the large base of which is located downwards and overcomes respectively the large base of said first, second and third frustoconical cavities.

According to an advantageous characteristic, the floor cleaner according to the invention may include cleaning heads fitted with pads resting directly on the ground and rollers are provided at the rear the floor cleaner to absorb the forces exerted by a handle itself attached to the back of the floor cleaner.

Whatever the embodiment, the floor cleaner according to the invention may further include a steam generation module supplying a steam injection slot leading to the part bottom of the floor cleaner in front of or behind the head (s) cleaning.

This steam generation module can be removable and optional or integrated in the integral floor cleaner.

The implementation of a steam generation module allows to improve the cleaning function and in particular to kill the mites through the use of steam at a temperature above 100 ° C.

According to an advantageous embodiment, the generation module steam is itself the handle of the floor cleaner.

The steam generation module can include, inside a sump, an elongated water tank juxtaposed with a double tray steam generator with direct evaporation also elongated.

According to a preferred embodiment, the steam generator includes a long U-shaped heating element lightly loaded arranged without overmolding directly in grooves formed in first and second metal trays held pressed against each other by spring clips, a central conduit elongated being formed between the first and second plates for the introduction of pressurized water from the water tank.

Advantageously, the steam generator comprises a casing isolated from the first and second plates by a porous body.

According to a particular characteristic, the module for generating steam includes at its upper part, in the vicinity of a handle, a water tank filling hole, a water supply nozzle pressurized water from the steam generator from the water tank by via a pump controlled by a trigger, an outlet steam from the steam generator to supply steam to the slot injection of the floor cleaner and the connections of connection of a steam generator heating resistor to an external power supply.

The elongated and usable steam generation module as a floor cleaner handle can also be a unit instant steam production usable regardless of integral floor cleaner, for example in a simple steam cleaning without suction function, or in a set reclining likely to use steam such as an ironing board example.

• la figure 1 est une vue schématique en perspective d'un premier exemple de nettoyeur de sol selon l'invention,
• la figure 2 est une vue schématique en perspective d'un deuxième exemple de nettoyeur de sol selon l'invention,
• la figure 3 est une vue schématique en perspective d'un troisième exemple de nettoyeur de sol selon l'invention,
• la figure 4 est une vue en perspective du module de génération de vapeur intégré dans le nettoyeur de sol de la figure 3, le carter du module de génération de vapeur étant ôté,
• les figures 5 et 6 sont respectivement des vues arrière et de dessus d'un nettoyeur de sol selon le premier mode de réalisation de l'invention,
• la figure 7 est une vue en coupe axiale selon la ligne VII-VII de la figure 6, montrant la structure interne d'une tête de nettoyage incorporée dans le nettoyeur de sol selon le premier mode de réalisation de l'invention,
• la figure 8 est une vue en coupe selon la ligne VIII-VIII de la figure 7 faisant apparaítre d'autres détails de la tête de nettoyage de l'appareil selon le premier mode de réalisation de l'invention,
• la figure 9 est une vue en coupe selon la ligne IX-IX de la figure 6 montrant un exemple de bac de récupération amovible adapté au nettoyeur de sol selon le premier mode de réalisation de l'invention,
• la figure 10 est une vue en coupe selon la ligne X-X de la figure 11 montrant un exemple de bac de récupération applicable au premier exemple de nettoyeur de sol selon l'invention,
• la figure 11 est une vue du bac de récupération de la figure 10, prise selon la ligne XI-XI,
• la figure 12 est une vue arrière du bac de récupération des figures 10 et 11,
• la figure 13 est une vue en coupe, essentiellement selon la ligne XIII-XIII de la figure 14, d'un nettoyeur de sol selon une variante du premier mode de réalisation de l'invention,
• la figure 14 est une vue en coupe, selon la ligne XIV-XIV de la figure 13, montrant la structure interne d'une tête de nettoyage incorporée dans la variante de réalisation de la figure 13,
• la figure 15 est une vue en coupe axiale selon la ligne XV-XV de la figure 16 montrant un nettoyeur de sol selon le deuxième mode de réalisation de l'invention,
• la figure 16 est une vue de dessus du nettoyeur de sol selon le deuxième mode de réalisation de l'invention,
• la figure 17 est une vue de dessous de la semelle du nettoyeur de sol des figures 15 et 16, sa plaque de fermeture inférieure étant ôtée,
• la figure 18 est une vue en perspective de dessous de la semelle du nettoyeur de sol des figures 15 et 16, sa plaque de fermeture inférieure étant ôtée,
• la figure 19 est une vue en plan de la plaque de fermeture inférieure de la semelle du nettoyeur de sol de la figure 17, à la même échelle que cette semelle,
• les figures 20 et 21 sont des vues en coupe respectivement selon les lignes XX-XX et XXI-XXI de la figure 22 montrant des détails de réalisation de la semelle du nettoyeur de sol selon le deuxième mode de réalisation de l'invention,
• la figure 22 est une vue de dessus de la semelle du nettoyeur de sol selon le deuxième mode de réalisation de l'invention,
• la figure 23 est une vue schématique d'une semelle d'un nettoyeur de sol à trois têtes de nettoyage conformément à un troisième mode de réalisation de l'invention,
• la figure 24 est une vue en coupe, essentiellement selon la ligne XXIV-XXIV de la figure 25, d'un nettoyeur de sol selon une configuration du type de celle illustrée sur la figure 23,
• la figure 25 est une vue en coupe, selon la ligne XXV-XXV de la figure 24 montrant la structure interne des têtes de nettoyage incorporées dans la variante de réalisation de la figure 24,
• la figure 26 est une vue en coupe selon la ligne XXVI-XXVI de la figure 25, montrant la configuration d'un tuyère d'injection d'air,
• la figure 27 est une vue de détail selon la flèche A de la figure 25 montrant un orifice d'extraction de particules,
• la figure 28 est une vue en coupe transversale d'un générateur de vapeur incorporable dans le module de génération de vapeur illustré dans les figures 3 et 4,
• la figure 29 est une vue de détail montrant les organes de commande du module de génération de vapeur illustré sur les figures 3 et 4,
• la figure 30 est une vue du dessus de l'un des plateaux du générateur de vapeur illustré sur la figure 28,
• la figure 31 est une vue en coupe longitudinale selon la ligne XXXI-XXXI du générateur de vapeur de la figure 28 et,
• la figure 32 est une vue en coupe longitudinale d'une variante de réalisation du générateur de vapeur de la figure 28.

Other characteristics and advantages of the invention will emerge from the following description of particular embodiments of the invention, given by way of examples, with reference to the appended drawings, in which:

• FIG. 1 is a schematic perspective view of a first example of a floor cleaner according to the invention,
• FIG. 2 is a schematic perspective view of a second example of a floor cleaner according to the invention,
• FIG. 3 is a schematic perspective view of a third example of a floor cleaner according to the invention,
• FIG. 4 is a perspective view of the steam generation module integrated in the floor cleaner of FIG. 3, the casing of the steam generation module being removed,
• FIGS. 5 and 6 are respectively rear and top views of a floor cleaner according to the first embodiment of the invention,
• FIG. 7 is a view in axial section along the line VII-VII of FIG. 6, showing the internal structure of a cleaning head incorporated in the floor cleaner according to the first embodiment of the invention,
• FIG. 8 is a sectional view along line VIII-VIII of FIG. 7 showing other details of the cleaning head of the device according to the first embodiment of the invention,
• FIG. 9 is a sectional view along the line IX-IX of FIG. 6 showing an example of a removable recovery tank suitable for the floor cleaner according to the first embodiment of the invention,
• FIG. 10 is a sectional view along line XX of FIG. 11 showing an example of a recovery tank applicable to the first example of a floor cleaner according to the invention,
• FIG. 11 is a view of the recovery tank of FIG. 10, taken along the line XI-XI,
• FIG. 12 is a rear view of the recovery tank of FIGS. 10 and 11,
• FIG. 13 is a sectional view, essentially along the line XIII-XIII of FIG. 14, of a floor cleaner according to a variant of the first embodiment of the invention,
• FIG. 14 is a sectional view, along the line XIV-XIV of FIG. 13, showing the internal structure of a cleaning head incorporated in the variant embodiment of FIG. 13,
• FIG. 15 is a view in axial section along the line XV-XV of FIG. 16 showing a floor cleaner according to the second embodiment of the invention,
• FIG. 16 is a top view of the floor cleaner according to the second embodiment of the invention,
• FIG. 17 is a bottom view of the sole of the floor cleaner in FIGS. 15 and 16, its lower closure plate being removed,
• FIG. 18 is a perspective view from below of the sole of the floor cleaner of FIGS. 15 and 16, its lower closure plate being removed,
• FIG. 19 is a plan view of the bottom closure plate of the sole of the floor cleaner of FIG. 17, on the same scale as this sole,
• FIGS. 20 and 21 are sectional views respectively along lines XX-XX and XXI-XXI of FIG. 22 showing details of construction of the sole of the floor cleaner according to the second embodiment of the invention,
• FIG. 22 is a top view of the sole of the floor cleaner according to the second embodiment of the invention,
• FIG. 23 is a schematic view of a sole of a floor cleaner with three cleaning heads according to a third embodiment of the invention,
• FIG. 24 is a sectional view, essentially along the line XXIV-XXIV of FIG. 25, of a floor cleaner according to a configuration of the type of that illustrated in FIG. 23,
• FIG. 25 is a sectional view, along the line XXV-XXV of FIG. 24 showing the internal structure of the cleaning heads incorporated in the variant embodiment of FIG. 24,
• FIG. 26 is a sectional view along the line XXVI-XXVI of FIG. 25, showing the configuration of an air injection nozzle,
• FIG. 27 is a detailed view according to arrow A in FIG. 25 showing a particle extraction orifice,
• FIG. 28 is a cross-sectional view of a steam generator that can be incorporated into the steam generation module illustrated in FIGS. 3 and 4,
• FIG. 29 is a detail view showing the control members of the steam generation module illustrated in FIGS. 3 and 4,
• FIG. 30 is a top view of one of the plates of the steam generator illustrated in FIG. 28,
• FIG. 31 is a view in longitudinal section along the line XXXI-XXXI of the steam generator of FIG. 28 and,
• FIG. 32 is a view in longitudinal section of an alternative embodiment of the steam generator of FIG. 28.

We will first describe, with reference to Figures 1 and 5 to 12, a floor cleaner according to a first embodiment of the invention which is particularly compact, simple to manufacture and easy to use.

With a single cleaning head incorporating optimally essential features of the invention, the floor cleaner according to this first embodiment makes it possible to ensure floor cleaning of integrally, with increased efficiency without producing any rejection in the cleaned part, which gives it an anti-allergy character. Otherwise, this floor cleaner does not require a paper bag to recover dust, unlike traditional vacuum cleaners, and can be produced in a small volume for mass-market production at a price reduced thanks in particular to the use of a reduced number of parts which can be produced by plastic molding.

The floor cleaner 100 according to this first embodiment can be in the form of an apparatus comprising a plate 101 which can constitute the upper part of a protective casing 102 and serves as support for a motor-fan 130 protected by a cover 103 which can have a cylindrical lower part 103A and an upper part frustoconical 103B (FIGS. 1 and 5 to 7). The cleaning apparatus 100 can be handled in a conventional manner using a handle 104 acting on the assembly 101, 102 for protecting the cleaning module and being able to be articulated on this assembly 101, 102.

A steam generator 106, which can be realized in a form compact, as described for example in the patent document EP-A-0 962 695 is advantageously associated with floor cleaner 100 according to the invention. This steam generator 106 can be produced so modular and removable and thus be presented as an option or remain usable in other contexts, such as for example to perform ironing operations. In this case, the modular steam generator 106 can be attached to the plate 101 as shown in the Figure 1, or on the handle 104. However, the steam generator 106 could also be integrated by construction inside the casing 102. A electrical cable 105 ensures the electrical supply of the motor-fan 130 and, where applicable, electrical resistances of heating the steam generator 106.

Note that the floor cleaner 100 is adapted to ensure efficiently both a dust extraction function and a various particles or debris and a condensed water suction function and waste when using a steam generator 106, so after cleaning it leaves a floor that is both clean and dry.

In the embodiment of Figures 5 to 7, the plate 101 of support for electric fan motor 130 and cleaning head 140 itself constitutes the upper face of the protective casing 102 and this assembly 101, 102 can be made for example of plastic material molded.

The protective casing 102 has two side walls non-parallel verticals which converge backwards and are provided with smooth squeegees or brushes 107 (Figures 5 and 6) to return dirt or debris towards the central part of the appliance where the cleaning head 140 located under the motor-fan 130 housed under its cylindrical-conical protective cover 103.

If we refer to Figure 7, we see that a cleaning head single 140 is housed in the lower part of the cylindrical part 103A of the protective cover 103 secured to the plate 101. The lower part of the cleaning head 140 itself constitutes a sole 103C with rounded edges which can rest on the ground or be located at a distance of a few millimeters from the ground to limit friction. The whole device can rest on the ground by means of fixed rollers or orientable G1, G2, G3 which can for example be distributed to vertices of a triangle and be mounted on the protective cover 102 or directly on a waste collection bin 191 which is housed under the protective cover 101, 102 and will be described later in more detail detailed with reference to Figures 9 to 12.

The cleaning head 140 is extended upwards by a casing cylindrical 110 in which is housed head to tail the motor-fan 130 which thus has an air inlet at the bottom sucked in 130A and in the upper part an outlet for pressurized air 130B. The motor-fan 130 could be positioned differently from the cleaning head 140 and could for example be placed horizontally. However, the vertical head-to-tail position of the fan motor 130 simplifies the realization and allows direct entry to the lower part of the recycled air escaping through a frustoconical nozzle 171 from the cleaning head 140 ce which increases the depression in the latter, while the air under pressure is returned downwards between the protective cover 103 and the motor-fan 130, which contributes to cooling the latter.

A safety filter 182 associated with a perforated support plate 181 is advantageously interposed between the central air outlet nozzle 171 of the cleaning head 140 and the intake air intake 130A of the fan motor 130. The filter 182 simply aims to prevent particles are accidentally sent to the fan motor 130, but, from by the design of the cleaning head 140, does not play a role in normal operation and does not get dirty, as long as the cleaning 140 already ensures a separation of the particles therein and a purification of the air returned by the nozzle 171, as will be explained below with reference to Figures 7 and 8.

The cleaning head 140 essentially comprises a cavity frustoconical open downwards, the small base of which is oriented towards the low. Air injection nozzles 151, 152, 153 spaced apart of 120 ° essentially open tangentially in the lower part of the frustoconical cavity. Windows 161, 162, 163 for extracting particles and waste are formed in the upper part of the cavity tapered. The extraction windows 161, 162, 163, spaced apart 120 ° are angularly offset from the nozzles 151, 152, 153. Vertical channels 131, 132, 133 supply of pressurized air to the injection nozzles 151, 152, 153 are formed in the cleaning head 140 in wall portions angularly offset from the extraction windows 161, 162, 163.

Thanks to injection nozzles 151 to 153, a vortex effect is created within the frustoconical cavity at ground level to be cleaned, so that the solid or liquid particles on the ground, including in fibers of a carpet or carpet, are torn off and entrained in a cyclone or vortex within the frustoconical cavity. Thanks to the shape frustoconical of the cleaning head cavity 140, the particles are driven upwards at the periphery of the cleaning head 140 up to reach the lateral extraction windows 161 to 163 located in part high, while the air discharged from the particles is exhausted in the center of the cleaning head through nozzle 171. Nozzle 171 is flared upward to distribute the air flow over the entire surface of the filter 182 located under the suction inlet 130A of the fan motor 130.

The air leaving via nozzle 171 for recycling is discharged by centrifugation of dust or liquid particles during of the suction phase so that there is no risk of clogging of the filter 182. In addition, the air circuit recycled by the fan motor 130 is very short. Compared to conventional vacuum cleaners, this avoids the need for using paper bags, long pipes, or even bins bulky or unhygienic settling. In addition, recycling air prevents micro-organisms or other substances from being returned to the atmosphere any residual elements in the air flow evacuated by the nozzle central 171.

The cleaning head 140 can operate with a single nozzle air injection 151 and a single exhaust window 161, but the efficiency is larger if there are several injection nozzles and several windows extraction within the same cleaning head 140. The presence of three injection nozzles 151 to 153 and three extraction windows 161 to 163 offset from each other by 120 ° can be considered a optimum from the point of view of operation and implementation mechanical, even if the number of injection nozzles and windows extraction could also if necessary be greater than three.

In the embodiment of FIGS. 5 to 12, it is implemented a removable collecting tank 191 which is housed under the cover 101, 102 and includes a central cylindrical part 191A serving as a sheath for the cover 103 for protecting the motor-fan 130 and the head of cleaning 140. 191C openings are provided in the sleeve 191A at the extraction windows 161 to 163 of the head cleaning 140 (Figures 9 to 12). The removable drip tray 191 can conform to the shape of the casing 101, 102 and form a space for receiving waste all around the cleaning head 140 with spaces for larger volume next to the extraction windows 161 to 163.

The adjustable rollers G1, G2, G3 intended to facilitate the movement of the cleaner on the floor, can be mounted in roller holder enclosures 191B directly on the recovery tank 191 removable which can thus be located a few millimeters from the ground. The bac recovery 191 removable can be locked on casing 101, 102 by any suitable closure system, for example by clipping, and can be easily removed from the casing 101, 102 from below, to be emptied after using the cleaner. The realization of the recovery tank 191 by example made of plastic makes it easier to clean.

When used with a 106 steam generator, the cleaner of the ground in FIGS. 5 to 12 is provided with a vapor outlet in the form of ramp located under the protective cover 101, 102 in a free space formed between the recovery tank 191 and the cleaning head 140 or preferably in a free space provided between the recovery 191 and the protective cover 101, 102.

As shown in FIG. 7, a part 172 constituting a upper wall for closing the cleaning head 140 and carrying the conical air outlet nozzle 171, can also be used to support the filter 182 and the support plate 181. The part 172 can be fixed removably on the upper side wall of the cleaning head 140 for example by screwing or by clicking, so as to allow a easy removal of filter 182 for cleaning or replacement.

The fan motor 130 can be constituted by an assembly conventional or not associated with a power variator. Note that the power required for the electric fan motor is reduced, in particular by the fact that the closed air recycling loop is very short and minimizes pressure losses.

According to an alternative embodiment, the air suction turbine associated with the electric motor could be devoid of a housing independent protection and could therefore be directly integrated into the housing 110 extending the cleaning head 140.

This is particularly the case in the alternative embodiment which will be described with reference to Figures 13 and 14, and which also constitutes a single head 540 floor cleaner.

In the case of the variant of FIGS. 13 and 14, the motor-fan 530 arranged inside a cover 503 mounted on a plate 501 of the floor cleaner has a double air flow, i.e. the engine cooling flow is independent of the main flow of cleaning. Such an arrangement is preferable in a humid environment, this which is the case when the cleaner is associated with a steam generator to spray steam on the ground by a ramp 61 of projection of steam placed outside the cleaning head 540, at the front or, as shown in Figures 13 and 14, on the back of the cleaner.

The implementation of an auxiliary air cooling circuit motor independent of the main cleaning air circuit allows have a less disturbed main circuit of cleaning air, more short, with higher flow velocities and thereby a higher great efficiency. Furthermore, the presence of moisture in the closed circuit cleaning air can in no way damage the engine since it is only traversed by an outside air flow having no role in cleaning.

In FIG. 13, we see air inlets 535 made in part upper cover 503, for example in the form of slots, for introduce cooling air flowing down between the engine 530 and hood 503. The cooling air from the engine is exhausted outwards through orifices or notches 536 made in part lower cover 503 in the vicinity of plate 501. A filter 537 can be placed between the air inlets 535 and the fan 534 cooling and 530 engine body to prevent dirt accumulate between the motor 530 and the cover 503.

The closed cleaning air circuit will be described with reference to Figures 13 and 14. The cleaning air drawn in through the central air inlet 530A of the 530C turbine driven by the 530 engine is recycled through 530B ports in two diametrically opposite transfer channels 531, 532 located in the wall of the cleaning head 540. The air from cleaning present in the transfer channels 531, 532 is injected into the lower part of the frustoconical cavity, open downwards, of the head of cleaning 540 by diametrically opposite nozzles 551, 552. Through the vortex effect, the particles present at ground level are torn off and driven by centrifugal force towards the orifices 561, 562 for extracting particles located at the top of the side wall of the head cleaning to enter one or more closed rooms 591 of dirt collection, the closed chambers 591 being isolated from exterior and main cleaning air flow.

The cleaning head 540 preferably rests on the floor by a shoe 502 which limits turbulence in the vicinity of the wall of the head cleaning. Rollers G4, G5 arranged at the rear of the floor cleaner allow the forces exerted by an articulated handle 504 to be taken up on the back of the floor cleaner.

An additional particle trapping device can be disposed at the level of the central air outlet 571 of the head cleaning 540. This additional trapping device may include a frustoconical structure 583 whose small base is located downwards and which forms a container for residual particles. The structure tapered 583 provides an annular orifice 571 for air outlet between the upper edge 587 of the frustoconical structure and the distributor 530D of the 530C turbine. A security grid 582 mounted on a plate 584 is interposed between the annular orifice 571 and the suction inlet 530A of the 530C turbine. The tapered structure 583, the plate 584 and the grid 582 are integral with each other and with the 530D distributor of the 530C turbine by fixing elements 585, 586. The device additional trapping 582 to 586 may naturally present slightly different configurations depending on the applications. Its role does aims to retain residual particles and filter 582 does not clog very little, the solid or liquid particles being essentially discharged to the extraction ports 161, 162.

In the alternative embodiment of FIGS. 13 and 14, the cleaner single head soil has a predominantly shaped footprint triangular with a rounded front part and more dimensions and a rectilinear rear part on which the handle 504 and which rests on the ground by rollers G4, G5. A ramp 61 application of steam (or if necessary water or cleaning product) and a brush 507 are advantageously arranged along the face straight rear of the floor cleaner.

The waste collection tray 591 is removable. The case if necessary, disposable plastic bags can be placed in bin 591 to recover waste more easily, especially if these are in the form of sludge.

As in the case of the embodiment described with reference to Figures 1 and 5 to 12, the walls of the cavity of the cleaning head 540 are frustoconical with a large base facing upwards so that facilitate the upward effect of the cleaning air flow intended to entrain the particles towards the peripheral extraction orifices 561, 562. Direct application of the cleaning head 540 on the floor by the pad 502 facilitates the cleaning process.

We will now describe with reference to Figures 2 and 15 to 22 a another embodiment of floor cleaner 200 according to the invention, which has two cleaning heads.

It is possible to make floor cleaners with several heads cleaning with multiple air injections and multiple extraction windows which would be analogous to the cleaning head 140 previously described. However, in the case of the embodiment of FIGS. 2 and 15 to 22, we implements two particular cleaning heads 241, 242 to counter-rotating air movements.

The floor cleaner 200 according to this second embodiment may have a general appearance quite similar to that of the ground 100 of FIG. 1, with a plate 201 for supporting a motor-fan 230, a protective cover 203 for the fan motor and a base 202 intended to be moved on the ground and to which is connected a handle 204. The floor cleaner 200, like the floor cleaner 100, may include a 206 steam generator which can be installed from modular or be integrated into the device. An electric cable 205 allows the supply of the electric motor-fan 230 and that of the electrical resistance of the steam generator 206 when it exists.

If we refer first to Figures 15 and 16, we see that the motor fan 230 is arranged vertically with the air inlet suction 230A located at the top and a pressurized air outlet 230B located in the lower part opposite a central well 250 formed in the sole or base 202.

An annular safety filter 282 is disposed between a share an annular cavity 231 delimited between the motor-fan 230 inserted in a cylindrical casing 210 integral with the support plate 201 and the protective cover 203 of the engine and on the other hand the air intake drawn 230A from the fan motor 230.

The cover 203 of the fan motor 230 is advantageously mounted on the plate 201 using fastening elements 233, 234 so as to can be removed for replacement or cleaning of filter 282 easily accessible above the 230 fan motor.

Figures 15 and 16 also show nozzles 211, 212 arranged through the support plate 201 to return to the spaces free 231 between the fan motor 230 and the cover 203 of the air coming from the upper central part of cleaning head cavities 241, 242 formed in the sole 202 which will be described below. Circulating air in the annular cavity 231 thus makes it possible to cool the front motor to be sucked at the suction inlet 230A.

Figures 17 to 22 relate to the sole 202 of the floor 200, in which the two cleaning heads 241, 242 are formed as well as two bins 291, 292 for recovering waste removed by the cleaning heads 241, 242.

As in the case of the first embodiment, the heads of cleaning 241, 242 include frustoconical cavities whose large base is located at the top, which top has openings 271, 272 covered by the plate 201 in which are arranged the air extraction nozzles 211, 212 in the central part superior of the frustoconical cavities. The underside constituting the small base of the frustoconical cavities of the cleaning heads 241, 242 defines openings delimited by a flange 241A, 242A horizontally extending the lower wall of the frustoconical cavities to ensure retention of particles located in the vicinity of this wall in the event that the sole 202 is raised from the ground.

A removable closure plate 220 is attached to the part center of the underside of the sole 202. The plate closure 220, fixed by connecting means 221 is arranged on counterbores 224, 223 formed respectively around the central well 250 supply of air under pressure and on a profiled part central 222 in the shape of a tip intended to cooperate with two other essentially vertical profiled walls 225, 226 extending the well central 250 towards the frustoconical cavities and also ending in tips 227, 228 to define air injection nozzles 251, 252 under pressure essentially tangential to the bottom of the frustoconical cavities of the cleaning heads 241, 242 just above the closure plate 220, the edges of which are cut so as to extend the flange parts 241A, 242A and frustoconical wall absent to define the air injection nozzles 251, 252.

Extraction windows 261, 262 are formed at the part upper of the walls of the cleaning heads 241, 242 delimiting the tanks recovery 291, 292, to allow particles centrifuged by the vortices or vortices created in the cleaning heads 241, 242 by the nozzles 251, 252, to enter the recovery tanks 291, 292. The extraction windows 261, 262 are angularly offset by relative to the injection nozzles 251, 252.

As an option, vertical partitions 291A, 292A for separation provided with slots can be formed in the vicinity of windows 261, 262 to define in each tank recovery 291, 292 an entry corridor and a trapping cul-de-sac particles while allowing possibly introduced air to come out towards the inside of the frustoconical cavities.

The entire sole 202, including the closure plate separable 220, can be produced by molding, for example in material plastic or aluminum.

As in the case of the first embodiment, the suction can be done without hose or paper bag.

Air recycling guarantees anti-allergy operation that does not does not return microorganisms or other fine dust in the atmosphere.

Cyclones or vortexes created in a counter-rotating fashion at ground level to be cleaned in the two cleaning heads 241, 242 by the emission of high speed air jets through the injection nozzles 251, 252 guarantee both a good detachment of dirt and the separation of this dirt by centrifugation and rejection at the periphery of the heads cleaning 241, 242 while clean air is drawn back into the center of the frustoconical cavities.

A steam injection slot 61 (Figures 15, 17 and 20) can be formed in the front part of the sole 202 in front of the heads of cleaning 241, 242 to combine steam cleaning with suction when using the vortex cleaner in combination with a steam generator 206. As in the case of the first mode of realization of FIGS. 5 to 12, the dirty water formed by the vapor deposition on the ground is sucked up by the strong depression formed in the center of the heads of cleaning thanks to the combined action of head blowing injection 251, 252 and suction through nozzles 211, 212 due to the action motor fan 230.

The discharge of liquid or solid dirt stored in the recovery tanks 291, 292 can be carried out by simple dissociation of the sole 202 for example of plastic material relative to the plate 201 forming a cover. The means of connection between the plate 201 and the sole 202 can comprise for example a system of clipping. Disposable plastic pockets can also be arranged in trays 291, 292 to facilitate the evacuation of waste.

The sole 202, the shape of which is preferably designed to so as to avoid salient angles, but on the contrary to present rounded edges, can preferably rest directly on the ground or can be mounted on orientable rollers allowing the sole 202 to be place at ground level or very slightly raised (of the order of 1 or 2 millimeters) above the ground.

The floor cleaner according to the invention can use a any number of juxtaposed cleaning heads within which a vortex effect is created at ground level by the action of the injection nozzles powered from one or more motor-driven fans. In the case of a multiple number of cleaning heads, recovery trays waste is inserted between the cleaning heads in the sole of the floor cleaner.

There is shown schematically in Figure 23 an example for distributing three cleaning heads in a sole 302 of a floor cleaner according to a third embodiment of the invention.

In this case, three cleaning heads 341, 342, 343 have each a frustoconical cavity whose large base is oriented towards the high ; the centers of the cavities being arranged at the vertices of a triangle which can be an equilateral triangle. A central air intake well 350 under pressure similar to the central well 250 allows the supply of injection nozzles 351, 352, 353 tangential to the cavities frustoconical of the corresponding cleaning heads 341 to 343. The injection nozzles 351 to 353 are deduced from each other by 120 ° circular permutations and introduce air in the form of vortex of the same direction of rotation at the bottom of each of the frustoconical cavities.

Extraction windows 361 to 363, which can also be deduced from each other by circular permutations of 120 ° and are angularly and vertically offset around each center of the cavity frustoconical, relative to the corresponding injection nozzles 351 to 353, allow the transfer of centrifuged particles in the cleaning head cavities 341 to 343 to the tanks recovery 391 to 393 interposed between the cleaning heads 341 to 343.

Extraction air intake ports 371, 372, 373 are provided in the central upper part of the frustoconical cavities of the heads of cleaning 341 to 343 to replenish the motor-fan associated with the closed circuit. The fan motor used in the case of the embodiment of FIG. 19 can be analogous to that used in the mode of embodiments of FIGS. 15 to 22 and has therefore not been shown in new.

The characteristics of the various embodiments described can be combined with each other. So brushes or squeegees could also be added under the soles 202, 302 of floor cleaners according to the second and third embodiments, being arranged convergently, to bring debris back to cleaning heads.

There is shown in Figures 24 to 27 an embodiment particularity of a floor cleaner with three cleaning heads working according to the principle of the cleaner of figure 23.

In the case of the embodiment of FIGS. 24 to 27, the heads of cleaning 341 to 343 are however not arranged according to the tops of an equilateral triangle, but are arranged according to the vertices of a isosceles triangle, in order to make the whole narrower.

Furthermore, as can be seen in FIG. 24, each head of cleaning such that the head 241 includes a vortex body surmounted by a suction cone 370 at the top of which is the air intake port 371 which is thus distant from the extraction ports particles, such as hole 361. The suction cone or cap frustoconical 370 has its large base located downwards and is connected on the large base of the frustoconical cavity of the vortex body of the head corresponding cleaning. The hat slant frustoconical 370 concentrates the particles to be extracted at the orifices such as 361, 362 and 363.

The fan motor 330 can be arranged according to the different previously described embodiments with an input 330A suction and 330B pressurized air outlet.

A handle 304, a steam application ramp 61 and a brush 307 can be combined with the floor cleaner with its plate 301 and its cover 303 as described for example in reference to Figures 13 and 14.

We will now describe with reference to Figures 3, 4 and 28 to 32 a example of a 406 steam generation module intended to supply a steam injection slot 61 opening at the bottom of the floor cleaner in front of or behind the cleaning head (s) 140; 241, 242; 341 to 343; 540.

The 406 steam generator module is designed to be elongated shape and thus be able to directly form the handle of a floor cleaner 400 fitted with a sole 402 and a plate 401 carrying the cleaning head (s) and a motor-fan covered with a hood 403, a vapor projection ramp 61 being placed by example on the back of the sole 402. It should be noted that the module steam generation 406 could be integrated into the handle of a steam cleaner without suction function, but constituting a simple broom. In this case the motor fan and the cleaning heads specifically described above are not implemented.

The 406 steam generation module illustrated on the Figures 3 and 4 includes a housing 461 whose shape can be adapted in function of the desired aesthetic, but which has an elongated shape and is articulated for example by legs 465 and a pin 466 on a clip 407 mounted on the plate 401 of the floor cleaner 400.

The steam generation module 406 forming a handle comprises at its upper part, in the vicinity of a handle 462, a closable orifice 464 for filling a 470 shaped water tank elongated juxtaposed with a steam generator 460 proper, and a nozzle 7 of pressurized water supply to the generator steam 460 from the water tank 470 via a pump 467 controlled by a trigger 463. One or more outputs 6 of steam generator 460 to supply steam to the steam injection slot 61 are also provided in the part upper part of the steam generator 460 in order to limit the presence of residual water droplets. Connection ducts between the outlet of the steam generator 460 and slot 61 are integrated inside the housing 461 next to the steam generator 460.

The elongated steam generator 460 is of the direct evaporation and instantaneous steam production. The generator of steam 460 illustrated in more detail in FIGS. 28 and 30 to 32 includes a very long U-shaped heating resistor 3, lightly loaded, arranged without overmolding directly in grooves 20 formed in first and second metal trays 1, 2 kept pressed against each other by spring clips 5. A elongated central duct 4 is formed between the plates 1 and 2 for the introduction of pressurized water from water tank 470 and applied via pump 467 when trigger 463 is operated.

The plates 1, 2 are isolated from the casing 10 of the generator steam 460 by a porous body 8 such as rock wool.

The U-shaped heating resistor 3 has a part angled 30 and two branches 31, 32 with a large circular section length housed respectively in grooves 20, 21 and 22 with profile semicircular formed in the trays 1 and 2, so that the heating resistance 3 follows the shape of the housings defined by grooves 20, 21, 22. Each plate 1, 2 further comprises a groove central longitudinal section 40 with also semi-circular profile, so that a central channel 4 is defined between the plates 1 and 2 for the supply in water. The water introduced into the central channel 4 has a flow laminar in the interface between plates 1 and 2 where it can come in contact with electrical resistance 3 to be transformed instantly in steam, and be distributed outside the generator of steam 460 through port 6, preferably located in the upper part (right on Figures 31 and 32). A thermostat 90 is arranged by example in the lower part of the steam generator to allow regulation of the electrical resistance supply 3. The thermostat 90 can be located outside the steam generator 460 and can be fixed on a detection rod 9 made of a material which conducts well heat, such as aluminum, which is inserted between the two trays 1, 2 and crosses thermally insulated the wall of the housing 10 of the steam generator 460.

As can be seen in Figure 29, the actuation of the trigger 463 ensures, via an electrical contact, actuation of pump 467, allowing instant supply steam, the electrical resistance 3 being also supplied and regulated through thermostat 90.

In FIG. 31, we can see an example of embodiment allowing, for the same steam production capacity, to make the more compact steam generator since both branches 31, 32 of the heating resistor 3 pass through the base upper end of the steam generator housing, with interposition insulators 51, 52, so that the pins 71, 72 for connecting the electrical resistance 3 are located outside the generator steam 460 itself.

On the contrary, according to the variant of Figure 32, the connection of ends 71A, 72A of the two branches 31, 32 of the resistor heating 3 is carried out using insulated connectors 81, 82, inside even from the body of the steam generator, defining pins of exit 91, 92. In this case, the water injection path through the nozzle 7 towards the heated area of trays 1, 2 is slightly longer, but allows nevertheless satisfactory operation.

The porous body 8 permeable to vapor makes it possible to trap and divide the residual water not evaporated between the plates by capillary action to turn it into steam.

Although the steam generator described is particularly adapted to be incorporated into the inclined handle of a cleaning it could also be used vertically or horizontal for other applications than cleaning and could by example be integrated into an ironing board. The port plug 464 for filling the water tank 470 advantageously comprises a vent facilitating the flow of water to the pump 467, as well as a non-return valve preventing water loss if the handle of the device, and therefore the water tank 470, are brought back to a horizontal position.

Claims (32)

Floor cleaner including: a plate (101; 201; 301; 501) for supporting an electric motor-fan (130; 230; 330; 530) having an intake air intake (130A; 230 A; 330A; 530A) and an outlet d pressurized air (130B; 2308; 330B; 530B), a cover (103; 203; 303; 503) for protecting the motor-fan (130; 230; 330; 530), a first cleaning head (140; 241; 341; 540), and a first receptacle (191; 291; 391; 591) for recovering solid or liquid particles, characterized in that the first cleaning head (140; 241; 341; 540) comprises a first frustoconical cavity open downwards and comprising its small base oriented downwards, at least a first injection nozzle (151; 251; 351; 551) essentially tangential of pressurized air disposed in the lower part of the first cavity to create a vortex effect within this first cavity and at least one first side window (161; 261; 361; 561) for extracting particles disposed in the upper part of the first cavity and without communication with the flow of air entrained towards the intake of aspirated air (130A; 230A; 330A; 530A); in that the first particle extraction window (161; 261; 361; 561) communicates with the first receptacle (191; 291; 391; 591) for recovering particles, which first receptacle (191; 291; 391; 591 ) apart from the presence of the first particle extraction window, is closed and without communication with the outside or the cleaning air circuit, while the first injection nozzle (151; 251; 351; 551) d pressurized air communicates with the pressurized air outlet (130B; 230B; 3308; 530B) of the fan motor, and in that an air outlet (171; 271; 371; 571) formed through the large base of the first frustoconical cavity is in communication with the air inlet (130A; 230A; 330A; 530A) of the motor-fan so as to define an entirely recycled air circuit without exchange with the outside of the system. Floor cleaner according to claim 1, characterized in that the first cleaning head (140) comprises first, second and third injection nozzles (151, 152, 153) which open out essentially tangentially in the lower part of the first cavity frustoconical and are spaced 120 ° apart, first, second and third extraction windows (161, 162, 163) which are formed in the upper part of the first frustoconical cavity, are spaced between them by 120 ° and are offset angularly respectively by compared to the first, second and third injection nozzles. Floor cleaner according to claim 1, characterized in that the first cleaning head (540) includes first and second injection nozzles (551, 552) which essentially open out tangentially in the lower part of the first frustoconical cavity and are spaced 180 ° apart and the first and second windows extraction (561, 562) which are formed in the upper part of the first frustoconical cavity, and are spaced apart by 180 °. Floor cleaner according to any one of the claims 1 to 3, characterized in that it comprises a single cleaning head (140; 540). Floor cleaner according to claim 4, characterized in the motor fan (130) is arranged vertically in such a way the intake air intake (130A) is located at the bottom and the air outlet under pressure is located in the upper part. Floor cleaner according to claim 5, characterized in that the cleaning head (140) is located immediately under the motor fan (130) with a central air outlet (171) from the first cavity frustoconical located near the intake air inlet (130A) of the motor fan (130) and in that the pressurized air circulation feeding at least the first injection nozzle (151) is carried out from high at the bottom between the motor-fan (130) and the outer cover (103). Floor cleaner according to claim 6, characterized in that it includes a safety filter (182) associated with a support plate perforated (181) interposed between said central air outlet (171) of the first frustoconical cavity and the intake air intake (130A) of the fan motor (130). Floor cleaner according to claim 2 and claim 6, characterized in that first, second and third channels vertical (131, 132, 133) pressurized air supply of first, second and third injection nozzles (151, 152, 153) are formed in the cleaning head (140) in wall portions angularly offset from the first, second and third extraction windows (161, 162, 163). Floor cleaner according to any one of the claims 1 to 4, characterized in that it comprises an annex air circuit of motor fan motor cooling (530) independent of cleaning air circuit flowing through the first cleaning head (540). Floor cleaner according to claims 4 and 9, characterized in this the auxiliary air cooling circuit of the motor-fan motor (530) includes an auxiliary fan (534) located above of the engine, an annex air inlet (535) in communication with the exterior and provided at the top of the protective cover (503) of the fan motor (530) and an annex outlet for pressurized air (536) formed in the lower part of the motor fan protection cover (503) (530) above the motor fan support plate (501) while the recycled cleaning air circuit includes a central intake air inlet (530A) of the fan motor located at lower part above the cleaning head (540) and an air outlet under pressure (530B) lateral disposed under the support plate (501) motor fan. Floor cleaner according to any one of the claims 1 to 10, characterized in that it comprises an additional device (582 to 587) for trapping particles arranged at the central air outlet (571) of the cleaning head (540). Floor cleaner according to any one of the claims 4 to 11, characterized in that it comprises a recovery tank (191; 591) removable surrounding the common cover (103; 503) inside which the motor-fan (130; 530) and the cleaning head (140; 540). Floor cleaner according to claim 12, characterized in that the recovery tank (191) has two vertical side walls not parallel which converge rearwards and are provided with squeegees or brushes (107). Floor cleaner according to claim 12 or the claim 13, characterized in that the recovery tank (191) is mounted on rollers or rollers (G1, G2, G3). Floor cleaner according to claim 1, characterized in that it includes first and second cleaning heads (241, 242) to counter-rotating air movements. Floor cleaner according to claim 15, characterized in that it comprises a sole (202) in which are formed respectively for the first and second cleaning heads (241, 242) of the first and second frustoconical cavities open downwards, including a small base facing downwards and communicating with first and second trays (291, 292) for recovering particles also made in said sole (202). Floor cleaner according to claim 16, characterized in that the sole (202) comprises a lower closure plate (220) separable, a set of profiled parts (222, 225 to 228) defining first and second air injection nozzles (151, 152) under pressure essentially tangential to the bottom of first and second frustoconical cavities, and first and second extraction windows (261, 262) ensuring communication between the upper part of the first frustoconical cavities and the first and second recovery tanks (291, 292), these first and second extraction windows (261, 262) being angularly offset from to the first and second injection nozzles (251, 252). Floor cleaner according to claim 17, characterized in that the sole (202) comprises a central air application well (250) under pressure and in that air exhaust nozzles (211, 212) are formed above the first and second frustoconical cavities at through a plate (201) for closing the sole (202). Floor cleaner according to claim 18, characterized in that it includes a motor-fan (230) having an air outlet under pressure (230B) which is arranged in its lower part opposite the well central (250) and a suction air inlet (230A) which is arranged at its upper part. Floor cleaner according to claim 19, characterized in that the air exhaust nozzles (211, 212) open into a cavity ring (231) delimited between the fan motor (230) and the cover protection (203). Floor cleaner according to claim 20, characterized in a security filter (282) associated with a perforated support plate (281) is disposed between said annular cavity (231) and the intake of aspirated air (230A) of the fan motor (230). Floor cleaner according to any one of the claims 16 to 21, characterized in that the first and second cavities frustoconical of the first and second cleaning heads (241, 242) include at their lower part an internal collar (241A, 242A). Floor cleaner according to any one of the claims 16 to 22, characterized in that the first and second tanks of recovery (291, 292) include vertical partitions of partition (291A, 292A) provided with slots. Floor cleaner according to claim 1, characterized in that it includes first, second and third cleaning heads (341, 342, 343) comprising first, second and respectively third frustoconical cavities whose large base is located upwards and whose centers are arranged at the vertices of a triangle, in that it further includes a central well (350) for supplying pressurized air to supply first, second and third injection nozzles (351, 352, 353) tangential angularly spaced to introduce pressurized air in the form of a vortex of the same direction respectively the lower part of the first, second and third cavities frustoconical, and the first, second and third extraction windows (361, 362; 363) formed respectively in the first, second and third frustoconical cavities and angularly offset and in height with respect to the first, second and third injection nozzles (351, 352, 353) to transfer particles respectively into first, second and third recovery bins (391, 392, 393) interposed between the first, second and third frustoconical cavities, and in this only first, second and third exhaust air extraction ports (371, 372, 373) are provided in the central upper part respectively first, second and third frustoconical cavities for replenish the fan motor in a closed circuit. Floor cleaner according to claim 24, characterized in that said first, second and third air extraction ports pent up (371, 372, 373) are arranged at the top of a hat frustoconical (370) whose large base is located downwards and surmounts respectively the large base of said first, second and third frustoconical cavities. Floor cleaner according to claim 1, characterized in that it includes cleaning heads (140; 241, 242; 341, 342, 343; 540) fitted with skids resting directly on the ground, and in that rollers (G4, G5) are provided at the rear of the floor cleaner for absorb the forces exerted by a handle (104; 204; 304; 406; 462) itself attached to the back of the floor cleaner. Floor cleaner according to any one of the claims 1 to 26, characterized in that it further comprises a module for generation of steam (106; 206; 406) supplying an injection slot for steam (61) opening at the bottom of the floor cleaner in front or behind the cleaning head (s) (140; 241; 242; 341; 342; 343; 540). Floor cleaner according to claim 27, characterized in that the steam generation module (406) itself constitutes the floor cleaner handle. Floor cleaner according to claim 27 or 28, characterized in that the steam generator module (406) includes inside a casing (461) a water tank (470) of elongated shape juxtaposed with a steam generator (460) with double plate with direct evaporation also elongated. Floor cleaner according to claim 29, characterized in that the steam generator (460) includes a heating resistor (3) of great length in the shape of a lightly loaded U arranged without overmolding directly into grooves (20) formed in first and second metal plates (1, 2) kept pressed one against the other the other by spring clips (5), an elongated central duct (4) being formed between the first and second plates (1, 2) for the introduction pressurized water from the water tank (470). Floor cleaner according to claim 30, characterized in that the steam generator (460) comprises a casing (10) isolated from the first and second plates (1, 2) by a porous body (8). Floor cleaner according to any one of the claims 28 to 31, characterized in that the steam generation module (406) comprises at its upper part, in the vicinity of a handle (462), a orifice (464) for filling the water tank (470), a nozzle (7) pressurized water supply to the steam generator (460) at from the water tank (470) via a pump (467) controlled by a trigger (463), a steam outlet (6) from the steam generator (460) for supplying steam to the injection slot steam (61) from the floor cleaner and connections (71, 72; 91, 92) from connection of a heating resistor (3) of the steam generator (460) to an external power supply.

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