DE2019646A1 - Transportable device for cleaning and partially drying carpets and carpets - Google Patents

Description

Commerzbank Aktien -gesellschaft Dep.-cash desk Wandsbek, 22-58226

Postal checking account: Hamburg 2250 58
Telegram address: PATENTIWE patent attorney. -

2 Hamburg 70, April 22, 1970

Dipl.-ing. H. Schaefer a · ™ »**. ·

"^ ** Telephone: 8 62 98 58 -

IIYDROTSi CORPORATION. ■ ^f ^ ^ü4D

25B Augusta Street, GREMTOLLE, South Carolina, U.S.A ..

Transportable device for cleaning and partial Drying of carpets and carpets.

The invention relates to a device for cleaning Carpets and carpets in which cleaning fluid is constantly mixed and sprayed onto the carpet. The carpet then enters the suction area of a suction nozzle that is located in the carpet and extracts large amounts of air .J'rendkörper sucked in together with the used cleaning fluid and carried down a drain.

The best known method of cleaning carpets is this the foam cleaning. In this case, the foam cleaner is usually applied to the carpet and there with it lathered with a rnechonic scrubber. The foam dries then on the carpet, was; addicted; from the environmental conditions takes about a day. The foreign body in that Soiled carpet will settle during foam cleaning in the Ιίοχ) ρβη dos carpet down from and are only removed to a small extent. After being cleaned several times, these will collect in the carpet Amounts of foreign particles and foam cleaner that has not been removed

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indicates that further foam cleaning would no longer make sense »In another method for cleaning A jet of pressurized steam with "added cleaning solution" is directed into the carpet. whereupon foreign bodies and cleaning solution are sucked out of the carpet, - With the for Devices used in such procedure "are two Container provided on a frame. In one of the containers there is a supply of pure water, one Device for heating the water and a spray nozzle. The used one is in the other container Cleaning fluid and the extracted foreign bodies. In this device, the water must be hand with the Cleaning solution can be mixed and then poured into the container by hand. Also need suction Dirt and used cleaning fluid can be removed from the other tank by hand. Therefore, two must Operators operate this device. One guides the cleaning head while the other refills and emptying the two containers concerned.

Another disadvantage is the small opening of the suction nozzle of only 6 mm, which works poorly when cleaning hair and knobbly carpets. Lay the knobs flat the floor, only the upper exposed side of the knobs is cleaned by the suction nozzle moving over it « In addition, the nubs are also located with such narrow suction nozzles

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high and flat on the floor after vacuuming. Another disadvantage of this device is that it is strong Moisture penetration of the carpet by the steam and possible damage to the floor underneath, "especially if it is made of wood". In addition, the suction nozzle "in this device must be parallel to the abutting edges. Carpet coverings are run, because otherwise torn apart at the butt joints x ^ earth. This Problem will primarily occur with untrained operators. There is a risk that Cleaning of the hot steam that penetrates through the carpet. the bonding of the carpet to the one below, the two adjoining one another Teppiohbahneii connecting adhesive tape dissolves. aside from that it is assumed that with a nozzle opening of 6 mm the suction effect of the nozzle is too strong, so that the Run over the butt joint over the edge of the following carpet is lifted. .

Another disadvantage of cleaning devices, such as it is described, for example, in U.S. Patent 3,262,146 there is the formation of foam in the suction tank. This Schmun hinders the work of the air-sucking fan, which is more and more restricted when the liquid level in this container rises and so does the blower more and more foam is added. Clean with steam of carpets that were previously treated with foam cleaner

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foam is produced if the steam does not do so Substances are added. However, will Even with such precautions, a lot of foam is still formed, as foam-inhibiting agents are not always effective are »Another disadvantage of these known devices is a recurring clogging of the Spray nozzles on, caused by the fact that the operator who ei the waste water tank? emptied and. fills up the fresh water tank, mostly here only used a bucket. If he now pours the heavily polluted sewage into a sink and with the same, If you do not pour a carefully cleaned bucket of fresh water into the fresh water tank of the device, then there is the great danger that the foreign bodies and teactile lacorn got into the freeze water tank in this way clog the spray nozzles »In case of clogging the spray nozzle cleaning must be interrupted until the nozzles have been cleaned «.

A great advantage of this device, which works with a steam jet and suction nozzle, is the easy removal of Dirt and debris from the carpet instead of just rubbing them into the carpet ' into the scliaum cleansing method. This advantage is especially great, "when, the carpet is constantly being used by people is trodden who are allergic to certain dirt :: - are partly in the carpet "

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The present invention relates to a simplified one portable carpet cleaner with a centrifugal suction fan in a tank to generate a high flow of air through a sauna nozzle and in the same tank a centrifugal pump for the constant suction of the used cleaning liquid as well as a mixing pre "■ Direction for the continuous preparation of cleaning liquid and its transfer to the spray nozzles owns.

Furthermore, according to the invention, the cleaning device is provided with a permanent water connection and constantly conveys foreign matter, dirt and used cleaning fluid to one of the device remote drain without having to be carried there by hand.

In addition, in the subject matter of the invention, the inclusion of foam in the waste water container is prevented by that the polluted wastewater mixed with used cleaning fluid from this container Rjtärid be sucked off.

In addition, detergent is constantly introduced into a loosing stream which directly feeds the cleaning head located Sprühvoriachtungen is supplied. In addition, the object has an

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Cleaning head with a suction nozzle that is wide enough to be able to suck in the knobs of the carpet, so that the knobs are washed around with cleaning liquid from all sides, whereby they are cleaned on all sides and remain upright after cleaning ₀ The in The knobs of the carpet sucked into the opening of the suction nozzle are cleaned and partially dried by a large volume of ikft that flows through the suction nozzle

The cleaning head is advantageously provided with spray nozzles, the one jet of steam and cleaning instinct on one Position about 12 mm in front of the suction nozzle, so that the ■ Foreign bodies in the carpet to the surface of the carpet be washed away, where they can be sucked off by the suction nozzle before they sink back into the carpet «, In addition, the cleaning liquid sprayed close to the suction nozzle is removed from the carpet by the suction nozzle vacuumed before it penetrates the carpet and the ™ underlayer of carpet soaked »

The invention is shown schematically and by way of example in the drawings .

1 shows a side view of the device, FIG. 2 shows a view of the rear side of the device with

Representation of the spray nozzles, FIG. 5 a section through the water tank. uad

achematic representation of the power asysteresis, FIG. 4 a section according to Idnie 4 - 4 in FIG. 3,

■ · ■■■. -X- ^:. ■:

Fig. 5 is an enlarged, partially sectioned view the cleaning head with suction nozzle and spray nozzles,

Fig. 6 is a schematic representation of the electrical circuitry of the device _t.

The device shown in the drawings for cleaning and partial drying of carpets and Carpet has a wheeled carriage that can be easily moved on the surface to be cleaned can. A tank A is attached to the carriage and to the connected to one end of a vacuum hose. A. High- " Power centrifugal fan B is located at the top of tank A and draws air through the hose and through the tank. A suction nozzle G is attached to the cleaning head and is at the other end of the vacuum hose connected. A spray device D is also attached to the cleaning head and sprays hot Cleaning liquid on one just in front of the suction nozzle G located part of the carpet. A hooking device for mixing detergent with hot water with one Container E for holding a supply of detergent is also arranged on the trolley. It has a mixing chamber and an injection pump F, the Sucks in detergent from container E.

A hose is connected to a hot water supply and constantly supplies hot water to the mixing chamber, where the mixing device has a precisely measured amount "

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Detergent in the continuously flowing past Water and so creates the hot cleaning liquid. The mixing device is through another hose connected to the spray device D, through which the cleaning liquid is close to the suction nozzle is sprayed on the carpet, so that dirt and foreign objects on the. Surface of the carpet being washed away, where they with the cleaning fluid and any incurred Foam can be sucked off and conveyed into tank A. A centrifugal pump G at the bottom of tank A sucks in foreign matter, Foam and cleaning liquid and presses them through a drain hose out of the device out. This drain hose leads;: - u one of the Device remote drain. In this way it avoids the work due to the accumulation of foreign bodies, foam and cleaning fluid the blaze is impaired.

The carriage on which the (tank Δ is fixed) has a bottom plate 10 to which a pair of wheels 11 are fixed at the rear and a swiveling wheel 12 at the front veitical side wall 1 ^Z I-, for example by welding-n is connected »The tank is open at the top to accommodate doc Ho chi ei string ;; centrifugal fan:" ·! B. A hose coupling 15 pre-binds the VaIr. around sc hl also with the one on the top of the tank. Do: ¹ ; · Vacuum hose 16 is connected to ueiii other iSnde- am "einifa-uxgr.ko;, ..! '- χί? ^Λ bvvt ^ lii

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suitable flexible material, such as, for example, a resistant to cleaning agents plastic.

The high-performance centrifugal fan B has on its periphery a downwardly directed flange 1-7, which grasps the side wall 14 of the tank A and completely seals the tank at the top, so that when the fan wheel rotates 17a cLie air at high speed from the tank , is evacuated. The air flows in the direction of the arrows 18 through the opening 20 into the fan and leaves it in the direction of the arrows 19 through openings 21 on the upper side 22 of the fan. The motor of the blower is mounted in its housing 23 and delivers ■ for example 2 1/4 HP; at 14,000 revolutions per minute. This results in an air throughput of, for example, 50 E ^y per minute through the suction nozzle 0, the vacuum hose urr; reaches tank A. The meaning of this big LuJ? Ί- -üurchuatses -is shown below.

A sieve 23 is located below the fan and shields it completely from the tank. It prevents lasers or similar weed particles from being sucked into Ann's blowers. An additional sieve, 'to collect _mv ^ retention of fibers, is on a splash projecting into the T-mk A ^; 24a attached at about hai bor height of the walls of the silk and dionl; liuiü collecting of Tesbori ßi'r: kr; t; ändon, which in the tank. Reach.

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In this way, clogging of the centrifugal pump G is to be prevented. The wastewater also gets there from the centrifugal pump G via a connected drain hose 25 into a drain, which is quickly clogged by fibers and dirt particles not retained in tank A would.

In Figs. 2, 3 and 5, the cleaning head 26 is shown "It has a stainless steel housing with a flat sloping roof part 27, which begins just above the suction nozzle and extends obliquely backwards and up to the connection with the flat horizontal roof part 28" Opposite side walls 29 begin with their lower edge about 6 mm above the suction nozzle G ₀ Hader 30 run on support arms 31 which are attached to the side walls 29 and facilitate the movement of the cleaning head. A hand bracket 32 is mounted on pegs 33 on the side walls 29 with its flat lower ends y \ and consists of a U-shaped bent tube 35- A flat metal plate 36 extends between the two legs of the U-shaped bent tube 35 in the vicinity of the upper part of the handle. A liquid shut-off valve is fastened to the metal plate with bolts 38. In addition, a hose coupling 39 for the vacuum hose is attached to it with a U-bolt 4Ό. The suction nozzle 10 is located on the front

of the cleaning head and is on the flat sloping roof part 27 ζ. B. fastened by welding. In a preferred embodiment of the invention, the nozzle opening of the suction nozzle has a width of 18 mm 'and a length of 360 mm. The width of the suction nozzle is large enough _r of great importance and, in order for the knobs can be sucked to clean the carpet in them of. It has been found that a width between 12 and .25 mm is particularly suitable for carpets with knob lengths between 25 and 37 mm. If the width of the suction nozzle is smaller, for example only 6mm, as is the case with known devices, the knobs are not sucked into the nozzle in such a way that they remain vertical afterwards, but remain on the floor. A suction nozzle with a width between 12 and 25 mm, on the other hand, leaves the knobs in an upright position.

The suction nozzle can be made of any suitable material and has a front wall 41 and a rear wall 42, the up and back are bent, and also a tubular Nozzle coupling 43, which also has a flexible vacuum coupling 16a is connected. The walls 41 and 42 have side walls 44 connected so that the through the vacuum hose 16a sucked air in sighting the arrows 45 in 3fig. 5 through the mouth 46 of the suction nozzle flows. During the cleaning process the cleaning head 26 is pulled backwards over the carpet.

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A spray device D. is arranged in the cleaning head, that the EeiniguriGsflusslgke.it in the direction of movement of the cleaning head is sprayed onto the carpet in front of the suction nozzle will. The spray device D 'consists of a. ::, elongated connecting tube 47, which extends the width of the cleaning head and with this on Leiden Side mounted brackets 4o is connected. uie brackets 48 also form the pipe seal on both sides. Equally spaced along the length of the connecting pipe 47 are distributed in this spray head 49, arranged through which the hot cleaning liquid that flows through a Hose 50 enters the connecting pipe 47, - on the Carpet being sprayed. The spray heads 49 are oriented so that the jet emerging from them is about 12 mm in front the suction nozzle 0 hits the carpet. For a good Cleaning the carpet it is important to the point of impact the liquid is about 12 mm in front of the suction nozzle C, so that the cleaning liquid in the carpet for about 1 second remains. The cleaning effect is particularly great because the carpet, if it is made of synthetic material hydropliobically reacts, so that the -.Tepp ichfarben the Heini. repelling liquid, which is why this to the surface of the carpet rises. When the cleaning liquid rises dirt particles and foreign bodies become out of the carpet, swept up with me. When the carpet is irühe-r foam has been cleaned, the foam residue will be removed.

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Cleaner also with the cleaning liquid upwards convey and generate large amounts of foam. • Cleaning fluid, foreign objects, and any foam generated sucked up by the suction nozzle 0. As in IFig. 5 shown, the knobs are sucked into the suction nozzle C so that the Cleaning liquid 57a can completely flow around the knobs 51 and clean it from all sides. After the Cleaning head has moved over the carpet this cleaned and the knobs are essentially upright or in their original position. The farther away from the suction nozzle the cleaning liquid is sprayed on the floor, the lower the cleaning effect, because the cleaning liquid and the dirt in sink in the carpet, so that it is more difficult to suck it out can be. Experience has shown that it is important to remove the debris and the cleaning fluid from the Vacuum carpet the first time they climb up. Since a large volume of air passes through the mouth. 46 the When the suction nozzle flows, the! Tops will be used during cleaning 'i-jLa-rk -bewegt., which supports the stimulating effect will. 7 / ie already erv'ihnb, promotes, the centrifugal fan about S.0 nr air, per minute. Through the a'-v strong LuF.be train tmp. - // earth-'dio. liO [ipoi.L-5Ί during the Ee in igung- also with L-

The mixing device has a container E which is fastened to the base plate 10 and which contains the cleaning agent 57. The container adjoins the tank A with its inner wall 52, which is shaped corresponding to the side wall 14 of the tank A. It also has a crescent-shaped outer wall 53, a top wall 54- and a bottom 55. An E ¹ cap 56 in the top wall 54- enables the detergent 57 to be poured into the container. Many suitable detergents can be used an emulsion of sodium tripolyphosphate proved to be particularly effective.

If the carpet to be cleaned has already been cleaned several times with foam, leaving residues of foam cleaner contains, it may be necessary to add foam-inhibiting substances to the cleaning agent or instead of the cleaning agent to use. Suitable commercially available substances come into consideration for this, in particular those based on silicone. The 'detergent 57 is from the bottom of the container E through the pipe 5 ^ and the filter 59 in the injection pump F is sucked in. This injection pump conveys * the detergent under high pressure of about 4 kg / cm through the pipe 59a, the T-piece 60 and the Pipeline 61 Ln the T-piece 62, which is connected to the Blank 6.5a olne mixing chamber forms * A hose 6? B Lssb IULt connected to a suitable hot water supply, such as

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z. B. a common hot water tap of a hotel. This Hose provides a continuous flow of hot. * Water through a reducing valve 65 into tee 62 and the mixing chamber. The reducing valve 65 reduces the line pressure to about 1.0 to 1.5 kg / cm. Because the pressure of the cleaning agent, which through the pipe 51 into the .Mixing chamber reaches about 4 kg / cm, this is continuously mixed with the hot water and left the mixing chamber as a finished cleaning liquid. The injection pump F doses a precisely measured amount Detergent in the flowing through the pipe section 63a hot water. Hoses 65c and 50 connect the mixer with the spray device D- through which the cleaning liquid is sprayed onto the carpet. How nice mentioned, a liquid valve 37 is between the Hoses 63c and 50 attached and can the inflow of Interrupt cleaning liquid to the spray device. A thermometer 37a is arranged on this valve the temperature of the cleaning liquid flowing through "Indicates. The best cleaning effect Jiat the cleaning fluid at a temperature of 60 to 80 ° 0.

The centrifugal pump G is arranged at the bottom of the tank A and sucks everything that is at the bottom of the tank, such as E.g. foam, sludge, dirt and used cleaning agents

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liquid, on. The drain hose 25 is connected to the centrifugal pump G and directs the sewage to a drain away from the device. In this way the impairment of the suction effect of the fan B by foam and waste water is avoided. The centrifugal pump L> possesses shovels 66, which are good for the Föi'deru of foam uru> Dirt are suitable. A suitable centrifugal pump promotes 16Ü0 liters of water per hour.

When the ITliquid valve 57 is closed ", a Detour line for the cleaning agent 57 created- v / eruen, which is pumped into the pipe 55a to damage this pipeline. and at the pump. Therefore, the cleaning agent from the '!! piece can uO through the Pipeline 67 and a safety valve GG in the container ii.lter E flow back. In this way, the cleaning agent can with the liquid valve 57 closed and continue running Injection pump F through the pipes 58 and 59a,, αaο T-piece 60, the pipe 67 and the safety valve Uü flow back into tank E. The tank E also has I'd em a drain cock 69 through which the detergent is drained can be.

The electrical circuit of the various pumps is shown in Fig. 6 Darges bellt. The cleaning device comes with

a .Netzanschluss 69a via leads ^ O and 71 connected. A main switch 72 is arranged in the supply line 71 and can switch off all motors at the same time. The motors are connected in parallel. The individual switch 73 switches the fan B, the individual sehalt he 7 ^ · the injection pump i ¹ and the individual switch 75 the centrifugal pump u ·. The switches can be arranged at a suitable location on the device. The carriage on which the container reasonable - _κ · introduced are, can be moved by means of a handle 76th The device can easily be transported in a van or van.

If Kian the -Ar together with evidence of the device, it follows that the spray device D is supplied from a hot water treatment with a constant flow of hot water. first to be connected to a hot water preparation system with the hose 63b and the electrical supply lines 70 and 71 to be connected to a mains connection. LieLnigungs-.mit te.] is injected from the tank E into the stream of hot water flowing through the hose 63b and drill bit 63a. A cooling device D is provided on the cleaning kettle and the cleaning fluid is direct; in front of the üauf; <liir> B ü. V / enn der. · Roiniguncis head over the 'l'epiilcli. i »; oiJ v / l vü , f '; el.atifb (Ii η HoIn If ₁ ¹ Unp-ofliiij; ιigkoib d Ir'okb vor

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the suction nozzle G on the carpet and is directly from the subsequent suction nozzle along with foam, dirt and Foreign bodies sucked off. The suction nozzle is connected to the tank A via a flexible vacuum hose 16, through which the high-speed centrifugal fan B draws air from the vacuum hose. Foam, cleaning fluid and foreign matter is sucked into the tank A with the air, and is continuously removed from the tank A by the centrifugal pump G sucked off and conveyed into a drain away from the device. That way will an impairment of the suction capacity of the blower is avoided.

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Claims (1)

Ptnt.nw.lt _2Henburfl70 , April 22, 1970 DlpL-lng. H. Schaefer Paten ta η s ρ rü che t 11.! Transportable device for cleaning and partial Drying of carpets and carpet coverings with: < A) a trolley that is used for easy mobility on the floor surface to be cleaned, B) a tank that is attached to the wagon, C) a vacuum hose, one end of which is in the tank flows into D) a high-performance centrifugal fan installed on the Top of the tank is placed and high speed air through the tank from the hose sucks, E) a cleaning head, ]?) a suction nozzle, which is arranged in the cleaning head and connected to the other end of the vacuum hose ¹ , so that air through the suction nozzle, the Va-. vacuum hose and the tank is sucked in, G) a spray device which is arranged in the cleaning head and cleaning liquid, seen in the direction of movement of the cleaning head, sprays on the carpet in front of the suction nozzle, "- H) a treatment for cleaning liquid, - I) a hose that associated with this treatment> and a constant influx of cleaning fluids 0 0 9 fl 49/1277 speed to the spray device, through which cleaning liquid in the carpet is flushed to the surface of the carpet, from where they are sucked off by the suction nozzle together with the cleaning liquid and foam that was created during cleaning and conveyed into the tank, J) a centrifugal pump, which is in the lower part of the tank is arranged K) a hose connected to this pump Discharge of cleaning fluid, foreign bodies and foam, L) a supply of cleaning agent and belonging to the preparation of the cleaning liquid Liquid and M) an injection pump, which contains the detergent mixes under pressure into the liquid, while at the same time the used cleaning liquid ■ vacuumed from the carpet. 2. Portable device for cleaning carpets and carpeting within a certain area to be cleaned with one tank, one in the upper part the tank's attached blower, the air out of the tank suction, a vacuum hose that ends with one end in 00904971277 the tank opens, a cleaning head, a suction nozzle, which is arranged in the cleaning head and to the other. End of the vacuum hose is connected, one elongated spray device that is in the cleaning head is arranged and cleaning liquid, seen in the direction of movement of the cleaning head, in front of the suction nozzle splashes on the carpet, characterized in that they A) a first hose to supply the device with pressurized hot water, B) a container for holding liquid detergent, G) a first pump, which is connected to the first hose and the Container is connected and a predetermined amount of cleaning agent in the continuously flowing through dosed hot water so that the finished cleaning liquid forms, D) a second hose that jQ conveyed to the spray device, where it is sprayed onto the carpet, and B) a second pump placed at the bottom of the tank ist'und "which is sucked into the tank through the hose nozzle Sucks cleaning liquid out of the tank, 80- that a continuous cleaning of the carpet is achieved; is, with the use of a trano- Q09ä4 & / t277 portable cleaning device, the mixing of the cleaning liquid and the removal of used ones Liquid by hand and the use of additional heating devices is avoided. 3. Transportable device for cleaning and partial drying of carpets and carpets with: A) a cart running on wheels for easy movement within the area to be cleaned, B) a tank carried by the wagon, 0) a vacuum hose, one end of which opens into the tank, D) a Iloch speed centrifugal fan that is attached to the top of the tank and large amounts of air flow through the tank from the vacuum hose sucks, E) a cleaning head, i ¹ ) a suction nozzle, which is arranged in the cleaning head and connected to the vacuum hose, G) a spray device arranged in the cleaning head is and hot cleaning liquid on a, seen in the direction of travel of the cleaning head, before the part of the carpet located near the suction nozzle, H) a mixing device with 1) a container placed on the trolley for receiving a cleaning agent, OOdtfU / 1277 J-) a mixing chamber, K) a pump for transporting the cleaning agent under pressure from the container to the mixing chamber, L) a hose that connects to a hot water heater is connected and constantly supplies hot water to the mixing chamber, M) the mixing device adding a predetermined amount of cleaning agent to the hot water flowing through clogs and thus generates hot cleaning fluid, N) further provided with a hose, which the mixing device and connects the spray device so that the cleaning liquid is close in front of the suction nozzle on the tepx ^ i, being sprayed, causing foreign bodies be washed up out of the carpet and washed off together with foam and cleaning fluid the suction nozzle and transported into the tank, 0) a centrifugal pump that is on the bottom of the tank is arranged and pumps out foreign bodies, foam and cleaning fluid and. V) a drain hose which is connected to the centrifugal pump and the waste water liquid to one , remote location, so .that the effect of the centrifugal fan is avoided by the accumulation of foreign bodies, foam and cleaning fluid. ■ 009849/1277 M-. Device according to. Claim 1, with: A) a manually operated valve to interrupt the flow of cleaning fluid to the cleaning head, whereby B) the pump recirculates the cleaning agent when the flow of cleaning fluid is through the manually operated valve is interrupted. 5. Apparatus according to claim 1, comprising: A) an elongated handle on the cleaning. head is pivotably arranged and B) a manually operated valve to interrupt the Flow of cleaning fluid to the cleaning head, the valve being arranged on the handle. 009849/1277