Classifications

• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
  • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
  • A47L11/29—Floor-scrubbing machines characterised by means for taking-up dirty liquid
  • A47L11/292—Floor-scrubbing machines characterised by means for taking-up dirty liquid having rotary tools
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
  • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
  • A47L11/29—Floor-scrubbing machines characterised by means for taking-up dirty liquid
  • A47L11/30—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction
  • A47L11/302—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction having rotary tools
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
  • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
  • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
  • A47L11/4036—Parts or details of the surface treating tools
  • A47L11/4044—Vacuuming or pick-up tools; Squeegees

Definitions

• the present invention relates to a device for machines for cleaning surfaces, or that in any case comprise a multi suction double wiper cleansing head for cleaning and washing said surfaces.
• the more or less intense effort is given in part by the weight of the machine, and is therefore given by moving the machine back and forth, or up and down, depending on the function and size of the machine, and on the conformation of the surface to be cleaned, which can be in certain cases and for certain cleaning machines, also a wall, a situation here in any case not particularly relevant.
• the weight of the machine is not the only element that affects the effort made to move the machine on the surface, as will be apparent from what is described below.
• Both the suction channels are equipped with wiper blades or rubbers, placed on both sides of the channel, for example made of rubber or flexible material suitable for the purpose, these with wiper blades or rubbers slide with a certain friction on the surface, to gather and guide the water and the residues to be removed towards the suction channels during the (forward and backward) cleaning movement.
• the rear suction channel performs its function when the machine is pushed forward
• the front suction channel performs its function when the machine is moved backwards, or towards the operator. Only one of the two channels draws in each time the residues from the floor, and has a really useful function, depending on the direction of movement of the cleaning machine.
• document IT PD 940 169 A 1 describes a dual wiper support, which includes two suction vents converging into a single channel, and a central brush.
• Said document states that the suction from both vents makes it less effective cleaning of the nozzle which is maintained in front of the brush in the direction of motion, and therefore strives to solve said problem, so that one of the two nozzles, respectively in one of two directions of motion, does not draw in from the surface, but rather draws in air from a lateral hole that has been made respectively on the side of both the suction vents, opposite to the position of the brush.
• Said support comprising said two vents and the brush, is mounted in a semi-free mode with respect to the rest of the floor washer-dryers machines.
• said support is rigidly driven by an external structure of the machine, forming a kind of dome that surrounds the top of said support.
• rubber protrusions are present, that are positioned at the height of the position of the holes made on the outer sides of the suction vents, so that during the forward or backward motion, the relative movement between the brush/vents support and the dome, brings said rubber protrusions in correspondence with said holes, and said protrusions respectively will close the hole of the vents which remains on the back to the brush during the motion, thus allowing the suction from the floor from said rear vent, while the hole made on the side of the front vent remains open, so that said connector does not suck liquid from the surface, but aspire, according to the inventor, only air from the side hole provided on said nozzle.
• This device will therefore propose to avoid the vent to draw liquid from the surface, but rather to draw air from the hole.
• This solution is in fact not very effective: it may be that by drawing air from the hole the amount of fluid aspirated from the surface is lower.
• the vent open on two sides it does not appear likely to happen, at least adopting a solution of this kind, which in any case, in the eyes of an expert in the field, would not appear to be effective.
• the energy required by a machine equipped with a head of this kind is in fact greater than that required by a common machine equipped with head not communicating with the external environment, this because of the power required for the suction, which would imply a high consumption compared to the solution of a problem that it is not certain to be so solved.
• a double wiper head such as the one described in IT 940 169 A 1 PD, and more common kinds of double wiper heads of the prior art, has no means to retain water inside, in case the machine is suddenly turned off. So, if a machine stop occurs before the aspiration is complete, the dirty water is poured again on the floor or on the surface that has just been cleaned, making the work just carried out all in vain.
• the purpose of the present invention is to describe a machine for cleaning surfaces with a double wiper cleansing head, which solves the problems of the prior art herein described, and which is also simple and economical to produce
• a further object of the present invention is to describe a machine equipped with a double wiper cleansing head, having at least the same performance of a machine of the prior art and which, however, uses a reduced power, to the benefit of energy saving and of consumption, or that alternatively, exploits the full power of suction to greatly improve the performance of the cleaning machine.
• an object of the present invention is to describe a cleaning machine equipped with double wiper cleansing head that holds the dirty water deriving from cleaning inside even in case of sudden stops of the machine.
• a double wiper cleansing head for a machine for cleaning surfaces comprising a central suction port, which is integral with two peripheral suction channels, a front channel and a rear channel, with respect to a centrally placed brush.
• These suction channels also include internal and external blades on each side of the suction channels, suitable for collecting and conveying the cleaning fluid and residues of dirt inside the suction channels.
• the channels are also provided with flaps or slats placed at the mouth of the suction channel which are alternately opened or closed depending on the direction of movement of the machine.
• Said flaps partialize the suction flow in the channels, one or the other flap, depending on the direction of motion, totally occludes the corresponding channel, thus eliminating the air passage in the respective channel, and therefore conveying completely the suction flow suction in the canal remained open .
• the double wiper cleansing head according to the present invention is thus provided with an innovative system of partializing of the depressions in said suction channels, according to the direction of travel.
• the wipers are equipped with flaps or blades, for example of rubber that open in the working phase of the corresponding channel, and when the travel is inverted they remain closed instead, thus blocking the suction in the channel that is not working, closing the suction channel.
• This system of suction partialization allows the operation of the only wiper that is necessary for drying and cleaning the surface.
• the corresponding suction channel which is open in correspondence of the forward and backward movements of the machine, thus uses 100% of the suction performance that is all conveyed, therefore, in the open channel. It is therefore possible to use a much greater working power, or to produce machines that have much lower energy consumption, and also the total occlusion of the suction channel not in use, eliminates the effect of depression on the surface that makes the motion difficult, as above said.
• said flaps or blades have a shape of a "siphon" that prevents the spillage of water in the suction phase, even when the machine stops suddenly, for example, for a voltage drop of electricity. This is a considerable improvement of the reliability of the machine for cleaning of surfaces.
• fig. 1 is a sectional view of a double wiper cleansing head according to the prior art
• fig. 2 is a sectional view of a double wiper cleansing head according to an embodiment of the present invention
• fig. 3 is a sectional view of a double, wiper cleansing head according to another embodiment of the present invention.
• fig. 4 is a real view of a double wiper cleansing head as seen according to the embodiment represented in fig. 3.
• a double wiper cleansing head 1 comprising a main suction port 2, which converges inside the machine body.
• Said suction port 2 is integral with a suction channel 3 that is active in the forward movement, and a suction channel 4 that is active in the backwards movement, (which for convenience here and below will simply be defined suction channel 3 and suction channel 4).
• the arrows shown are indicative of the way the aspiration occurs in cleansing a head of this type; namely both suction channels 3 and 4 are always active simultaneously and the aspiration of both of them converges in the main suction port 2.
• Said head 1 also comprises two wiper bodies, a front 12 and a rear 12' one (with respect to the direction of travel indicated in fig.l) and placed in correspondence of the end sides of the channels 4 and 3. Moreover, on the outer sides of said channels 3,4 rubbers 5,5' are present, and corresponding rubbers 7,7' placed on the inner sides of the channels 3 and 4. Rubbers 5,5' are equipped with suitable flaps 6,6' to limit the opening of the rubbers 5,5', during the sliding of the head 1 on the floor. On the inner side of the head 1 a wiper support 10 is present which also serves as a cover for a brush 13, placed between the two channels 3 and 4.
• said support wiper 10 overlap the internal rubbers 7,7' in zones placed in correspondence of the wiper bodies 12 and 12', and therefore in this area said wiper support 10 acts as an internal rubbers block flap 11 , in order to limit the excessive opening of the rubber during sliding on the floor.
• the channel that is actually active is channel 3, namely the back channel, which aspires therefore water and dirt residues from the affected surface.
• the water used for the washing of the surface is therefore retained by the wiper 12', when the machine is aspiring, as it creates a vacuum chamber in the suction channel.
• the water is then sucked upwards and converges into the suction port 2.
• the front channel 4, equipped with wiper 12, however, is limited to sliding on the floor and the depression effect that is also created in this channel, said channel 4 not having anything to draw in from the surface, increases the friction of the non-operative wiper 12, on the surface itself, making it more difficult for the operator to move forward/backward the cleaning machine.
• 50 % of the power used by the machine is wasted, as only one of the two channels 3 or 4 is used according to the movement, but in both channels the suction is continuously active. This implies that, depending on the movement, there is a loss of 50% of the suction performance.
• a machine of this kind therefore, in the light of a 100% of power supplied always works with a performance equal to 50% of what should be the performance equivalent to the power supplied, and this not only at the expense of performance, but also of the energy consumption required, which is also accordingly oversized, and 50% of it is wasted.
• the double wiper cleansing head substantially solves the problems of prior art by proposing an innovative solution, and at the same time simple to be implemented, and this then, goes to the advantage of the economy granted by the invention, which solves all the problems described so far.
• the double wiper cleansing head 1 represented in figure 2 comprises in the area of the wiper body 112 and 112', an innovative partializing rigid flap 115, 115'.
• the partializing , rigid flap 115, 115' allows to partialize the depression in the channels 103 and 104 according to the direction of travel, respectively closing one or the other channel depending on the direction of travel.
• the wiper 112' opposite to the direction of travel, due to friction with the floor flexes the rubber 105', opening the corresponding suction channel 103, and begins to draw in.
• the partializing rigid flap 115' does not totally close the channel 103, as the rubber 105' remains open to friction with the floor, thus allowing the passage of a flow of air and water which is sucked from the channel 103.
• the wiper 112 which is located in the front position with respect to the driving direction, pushes the rubber 105 against the partializing rigid flap 115, thus closing completely the corresponding channel 104. It is immediately apparent that this partializing system allows the effective operation only of the wiper 112 or 1 12' necessary to dry. The wiper then uses 100% of the performance of suction available, doubling the suction power of the machine. Conversely, it is therefore also possible to produce machines for cleaning of surfaces, which with the same suction performance of the previous machines of the prior art, are able to operate at half of the power, thus consuming less current and halving in practice the consumption of energy, all to the benefit therefore towards energy savings for the user and for the environment.
• the present invention can easily adapt to many types of machines for cleaning of surfaces manufactured according to current standards, and this with a considerable saving for the manufacturers.
• the double wiper cleansing head 101 system is completely removable, in such a way to replace worn or damaged parts without the aid of any tools. Also the maintenance is therefore quick and inexpensive.
• figure 3 it is shown another preferred embodiment of the present invention that, in addition to partialize the flow of air, and to solve the problem of the depression effect usually created in the channel that is not working, also solves, keeping those benefits, the problem of backflow of water on the surface just cleaned in case the cleaning machine is suddenly turned off.
• FIG 3 is represented a double wiper cleansing head 201 , equipped with wipers 212, 212' similar to the previous ones, and with internal rubbers 207, 207' and outer rubbers 205 and 205', always of a similar type with respect to the previous wipers and engaged in the same functions.
• the partializing flap 215, 215' is embedded in the wiper support 210, which is an extension of said support 210, to which is given a special shape, as shown in figure 3.
• the partializing flap 215, 215' performs the same partializing function described for the partializing rigid strip 115,115' of figure 2. Additionally, the flap 215, 215' according to the embodiment represented in figure 3, in a particularly advantageous fashion, is equipped with a siphon form, and this form makes it possible that, in case of a sudden stop of the machine, the strip 215,215' holds the water drawn into the channels 203 and 204 within the channels themselves, preventing the spill and the backflow on the just cleaned surface. It appears evident that the second embodiment herein described, solves all the problems of the prior art known so far extrapolated. The choice of one or other embodiment is at the discretion of the manufacturer, who decides according to the needs of specific embodiments.
• the double wiper cleansing head 201 is completely disassemblable in order to allow replacement of the damaged or worn parts without the aid of any tool. Also the maintenance is therefore quick and inexpensive.
• figure 4 For completeness in figure 4 is represented a double wiper cleansing head as is produced, and in particular it is to be noted the detail of the partializing rigid flap 215, 215' visible laterally on the cylinder head 201.
• the rubber structures described in the present invention may for example be made of natural rubber, synthetic rubber or para; the structure and the rigid parts in general can be made for example of polypropylene, polyamide or any other material suitable for this purpose, such as metallic materials like steel or aluminum etc.

Landscapes

• Cleaning In General (AREA)
• Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
• Cleaning By Liquid Or Steam (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=49000538

Family Applications (1)

Country Status (5)

Families Citing this family (3)

Family Cites Families (5)

• 2013
  • 2013-06-13 IT IT000970A patent/ITMI20130970A1/it unknown
• 2014
  • 2014-06-10 EP EP14738589.2A patent/EP3007606B1/de not_active Not-in-force
  • 2014-06-10 DK DK14738589.2T patent/DK3007606T3/en active
  • 2014-06-10 ES ES14738589.2T patent/ES2639825T3/es active Active
  • 2014-06-10 WO PCT/IB2014/001024 patent/WO2014199216A1/en active Application Filing

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events