DE1403656A1 - Device for cleaning floors - Google Patents

Description

Dipl .- »ng. W. PAAP. 'MONKS 22. *. ^{1Οβ July 1} 9 ⁶¹

Dipl.-fng. H. MITSCHERLtCH Marlcmn.nplatz A

Dipping. K. GÜNSCHMANN ι ** -. »Μ β4. 1403656

PATENT LAWYERS

HOOVER LIMITED Perivale, öreenford, Middlesex / England

Dr. Expl.

Patent registration Device for cleaning baths

The invention relates to for cleaning floors or the like suitable devices of the type having means for drawing in a liquid from that to be cleaned Soil with the help of an air stream and to convey the "air and liquid mixture to a separator, in which the liquid is separated from the air. A device of the type mentioned designed according to the invention has a container for a liquid release agent and a facility for releasing the defoaming agent into the mixture of air and liquid before this mixture reaches the separator. The device can have a nozzle with a suction opening, through which the liquid is sucked from the floor to be cleanedj in this case the container for the defoaming agent be arranged in the suction nozzle or in its vicinity.

Part of the wall of the container exposed to the air flow can be porous so that the release agent seeps through it and can be absorbed by the air flow. This poröce Wall can be made of sintered metal, for example.

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Alternatively, the liquid demoulding agent can be withdrawn from the container by means of a negative pressure, by means of which the liquid is sucked from the floor. For this purpose, the interior of the container can be open to the atmosphere, and a channel extends from a point near the container bottom to a point above the surface of the liquid defoaming agent, where this channel opens into the suction air flow.

The container can be connected to the atmosphere by another channel that extends down to the vicinity of the Extends container bottom. The container is expediently arranged in the nozzle and can be refilled if you have a lid opens via an opening in the nozzle wall.

Further details and advantages of the invention emerge from the following description of several exemplary embodiments on the basis of the drawings.

Pig. Fig. 1 is a perspective view of one according to the invention Floor cleaning device when viewed from above and from one side, the container for the Cleaning agent is separated from the device.

Pig. 2 shows the suction nozzle of the Pig device in plan. 1, the lid of the space for receiving the container has partially broken away

Pig. 3 is a partial section along line 3-3 in Pig. 2

Pig. 4 shows in a schematic perspective illustration the one from the nozzle according to Pig. 2 and 3 dismantled tanks. for the liquid de-foaming agent.

Ed. 5 is similar to Pig. 2, ^ edooh shows another training . ₈ O9811 / O1S1 ϊ _ ^

Pig. 6 is a section along line 6-6 of Pig. 5.

Pig. Figure 7 is a schematic perspective illustration of the Pig nozzle. 5 and 6 removed container for the liquid release agents.

The device to which the invention is applied is in the patent (patent application H 37 125).

According to Pig. 1, the device has a combined burst and suction nozzle 10, which enables the contaminated Suck cleaning liquid from the floor to be cleaned with the help of a motor and blower unit 11 and apply it to an even to convey to a separator 13 to be explained. The device carries a handle 14 »by means of which is used for handling which it can be moved on the floor to be cleaned, and the one in the supply line 30 for the motor and fan unit lying switch 31 carries.

According to Pig. 3, the suction nozzle 10 has two in one mutual Spaced rows of bristles 15 attached to a bottom plate 16 of the nozzle; the bottom plate 16 has a narrow slot 17 through which the contaminated cleaning liquid is sucked from the floor. According to Pig. I. 1 to 3, the nozzle has a hub-like portion 19 which is connected to the main body of the device by means of a bayonet connector known Konetifuirtsion can be connected. According to Pig. 3 1st the have part 19 of the bag with a sealing effect with a lower intake pipe 1 $ connected through the housing 20 of the engine Fan unit runs upwards. The upper end of the lower- ' ren suction pipe 18 iet according to Pig. 1 ver * 'with a wet suction pipe 21, bound that on one side up to the separator 13

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A dry suction pipe 22 extends from the other side of the separator down to the inlet of the motor and fan unit 11. The method by means of which the contaminated Cleaning liquid through the suction pipe 18 and that the wet suction pipe is sucked up naoh and deposited in the separator 13 is described in the aforementioned patent.

The device has a removable container 12 for the cleaning liquid, which in Fig. 1 of the actual Device is separated, but can be held on the device in the operating position by a clamp 23. The bottom 24 of the container 12 carries a valve 25 for closing and opening the lower end of the container. If this valve with Using a connecting member 26 and a rod 27 is opened, the latter by a lever 28 on the upper part of the Handle 14 can be actuated, the fresh cleaning liquid can be sent to the cleaning agent via a channel (not shown) Ground.

According to Fig. 1, the separator 13 has a pivotable cover 29, which is also operated with the aid of the valve 25 Lever 28 can be opened and closed. The operating lever 28 is arranged so that the lid 29 of the separator is opened before the valve 25 opens, even then, when the motor and fan unit is in operation, the Effect of the negative pressure on the suction nozzle is canceled because the Abeoheider when opening the Beekel 29 we vented A. There is therefore no risk of the leg flexing in the early morning de · The delivery is raised upwards * The lever 28 can be in a Be held in the middle position at which the cover 29 off ent daa valve 25 is closed, however, so that the pre, - ·· ■ " direction for scrubbing without the cleaning

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_BATH ORIGINAL

liquid is absorbed. As soon as the lid 29 is closed, however, the suction nozzle is exposed to the negative pressure, so that it sucks up the contaminated cleaning liquid from the floor, the cleaning liquid in the separator 13 from the Air flow is separated.

The separated contaminated cleaning liquid does not get out of the separator via an outlet 54 into one here flexible bag shown floating on the surface of the fresh cleaning liquid in the container 12.

It has been shown that it is important to prevent the formation of foam from the suctioned cleaning liquid, because the resulting foam could clog the separator »

According to Pig. 3 and 4 has the nozzle 10 in one embodiment a pocket 34 for receiving a container 33 for a liquid defoaming agentj the pocket 34 extends approximately over the middle third of the suction nozzle 10. The rear wall of the pocket 34 is formed by several spaced apart Finger 32 formed, so that the rear part of the container 33 with the contaminated cleaning liquid entrained Air flow can come into contact.

The container 33 can be inserted into the pocket 34 through an opening in the top of the nozzle 10; this opening is usually closed by a cap 35 made of a flexible plastic, which has a sealing effect on the edges of the attacks opening in the upper part of the nozzle. The rear edge of the cap bears a rib 36, which protrudes close to the bottom and which is inserted into a groove 37 in fits the top wall of the nozzle. Near the rear edge carries the Cap 35 on the underside of several holding tongues protruding near the bottom

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with a hook-shaped end 39 »between the rear wall of the pocket 34 forming, spaced fingers 32 fit. Near its front edge, the cap 35 carries a plurality of hooks 40 on the underside, which on the underside of the front edge 41 of the Attack the opening in the upper part of the nozzle 10. A downwardly projecting rib 42 is provided on the outermost front edge of the cap 35, which, according to FIG. 3, rests closely against the front wall of the suction nozzle. This rib 42 extends according to FIG. 2 over the Ends of the cap 35 and forms a handle for removing the cap.

According to FIG. 3, the container 33 rests on two ribs 44 protruding upward from the base plate 16 The bottom 45 of the container 33 is separated from the slot 17 by a gap, so that the effect of the negative pressure in this area is not hindered.

The top hand 50 of the container has a small opening 51 through which the liquid defoamer can be poured into the container. A cork stopper is used to close the opening 51 52. The rear wall 46 and the rear half 47 of the lower wall 45 of the container are made of sintered porous Metaj.1, through which the liquid defoaming agent seeps through can, but it is held on the outer surface by the capillary action. In the middle of the container extends a Vent pipe 48 upwards from a point near the container bottom through a vent opening 49 in the rear wall 46. The liquid defoaming agent used is preferably a viscous silicone compound whose properties are chosen so that it seeps through the porous walls and on their outer surfaces by the surface tension

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is held on "until it is passed over by the Air flow is entrained

If desired while using the device | vacuum the contaminated detergent from the floor, one closes the pivotable cover 29 of the separator 13 and turns on the motor and blower unit 11 to the contaminated Suck cleaning liquid up into the separator. The contaminated cleaning liquid then arrives into the flexible bag (not shown here), while the air flows through the dry suction pipe 22 to the motor and fan unit flows.

It is noticed that the contaminated cleaning liquid, which is carried along by the air stream »when it leaves the nozzle, small amounts of the liquid defoaming agent from entrains the outer surfaces of the container walls 46 and 47. The liquid defoaming agent mixes with the cleaning liquid and prevents the formation of foam or destroys the foam already present in the suction channels.

5 to 7 show a further embodiment in which the container 70 for the defoaming agent is again arranged in the suction nozzle 10, but now rests on three ribs 71 which protrude upwards from the base plate 16. The container 70 has a screw cap 72 so that the supply of liquid defoaming agent can be replenished in the container. Extending from the screw cap to a point near the bottom of the container 70 is a venting pipe 73 which is connected at its upper end to the atmosphere. For this reason, the cap covering the dlt opening in the upper part of the nozzle has an opening 76 into which the screw cap of the container

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protrudes} the opening in the upper part of the nozzle is used to insert the Container.

In addition, a further suction pipe 77 is provided, which in turn extends from a point near the container bottom to the top above the surface of the defoamer and then through the rear wall of the container extends ^ this suction tube ends in a horizontal section 78, which near the rear in the lower Suction channel 18 protrudes. During the operation of the device, the negative pressure generated in the suction channel 18 is approximately the value "Exceed 200 mm WS while the interior of the container of course because of the presence of the vent channel 73 <im is essentially exposed to the atmospheric pressure. Therefore, the negative pressure in the suction channel 18 will suck in small amounts of the liquid foaming agent via the pipe 77 and into the air stream initiate. As in the first embodiment, the liquid defoaming agent prevents the formation of foam or it destroys the foam that is already present in the suction channels.

It should be noted that depending on the operating conditions vary the Durohtritte cross section of the additional suction pipe 77 and, if necessary, can provide a drop in this suction tube to allow the liquid demoulding agent to flow through rules·

Furthermore, it is noted that the container for the tea pots, means in both of the forms of training described in the Suction tea is housed so that it is not absolutely necessary, and that the container can be in any !! for sale the suction line between the tea and the separator.

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bad om-

Furthermore, the fan could be arranged in front of the separator in such a way that it conveys the wet air stream that carries the dirt and releases it under pressure to a water separator. In this lalle the suction tube of the container may in the air line on the front side of the blower may be arranged so that the _f Bntschäumungsmittel from the container is sucked and passes into the passing air stream.

Claims 808811/0131

Claims (8)

PATENT CLAIMS [1.) Floor cleaning device with a device for vacuuming of liquid from a floor to be cleaned with the help of an air stream and for conveying the mixture of air and liquid to a separator in which the liquid is separated from the air, characterized by a container (33t 70) for a liquid defoaming agent and a device by means of which the liquid defoaming agent is applied to the mixture is released from air and liquid before the mixture reaches the separator 2. Floor cleaning device according to claim 1, characterized by a suction nozzle (10) which has a suction port through which the liquid is sucked up from the bottom, with the container for the defoaming agent in the suction nozzle or in its Close is arranged. 3 · Floor cleaning device according to claim 1 or 2, characterized in that »part of the wall (46, 47) of the container, exposed to the air flow is porous, so that the defoaming agent seep through and be absorbed by the air flow can. 4. Bodenreinigungsvorriohtung according to claim 3, characterized in that that the porous wall consists of sintered metal. 5. Floor cleaning device according to claim 1 ο the 2, characterized characterized in that the liquid defoaming agent from the loading ■ container is sucked in by the negative pressure, through which the liquid is sucked wildly from the bottom. 8098 11/0131 *. '\ 6. Floor cleaning device according to claim 5 »characterized in that that the interior of the container is in communication with the atmosphere and a channel (77) from one point extends near the container bottom to a point above the surface of the liquid defoaming agent and then in the Suction air flow opens. 7. Bodenreinigungsvorriohtung according to claim 1 to 6 »thereby characterized in that the container with the atmosphere through a further channel (73) is connected which extends from the top of the container to a point near the container bottom. 8. Floor cleaning device according to claim 2 "characterized in that that the container is arranged in the suction nozzle and can be refilled when you open a lid, the one opening in the wall of the suction nozzle closes. The> *% ieni (lawyer » 809811/0131