DE2302840A1 - CLEANING APPARATUS FOR CLEANING FLOORS, CARPETS, WINDOWS AND THE LIKE - Google Patents

Description

Andrejewski, Honke & Gesthuysen patent attorneys

Physicist Dr. Walter Andrejewski graduate engineer Dr.-lng. Manfred Honke graduate engineer Lawyer files: 40 748 / Tue = _H to Dieter Gesthuysen

4300 Essen, January 19, 1973 Theaterplatz 3

P at en t registration

UPO OSAKEYHTIÖ

15100 Lahti 10, Finland

Cleaning apparatus for cleaning floors, carpets, windows and the like.

The present invention relates to a cleaning apparatus (washing apparatus) for cleaning floors, carpets, windows and the like using a suitable tool for cleaning, e.g. B. a brush, which of two detergents Containing containers that are interconnected for the purpose of transferring the cleaning agent from one container to the other are, an air blower connected to the containers to regulate the pressure prevailing in the containers, a

309831/0948

230284Q

Andrejewski, Honkf & Gesthuysen, patent attorneys, 4300 Essen 1, Theaterplatz

a pipe through which air from the pressure side for the purpose of foam formation of the fan is passed through a valve below the liquid level of the first container, one with a Valve-provided connection from the second container to the suction side of the fan, a valve-equipped connection from the free air to the suction side of the fan, one equipped with a valve Connection from the pressure side of the fan to the free air, an opening in the first container through which foam is passed into the cleaning tool, one that opens towards the second container and is equipped with a non-return valve Return opening through which the foam that has already been used is returned to the cleaning apparatus, and at least a filter arranged in the second container, which divides this container into compartments so that the foam return opening and the opening of the connection leading to the fan on the suction side on opposite sides of the fan Filters are located, is formed.

Such a cleaning apparatus is, for. B. from the Finnish patent specification no. This device uses With the help of a blower, overpressure and underpressure are generated alternately in the washing liquid container. During the overpressure phase foam is formed, which is used for cleaning tools, e.g. B. the brush is directed. Then the valves are switched over, so that a negative pressure is created in the second container and the foam that has already been used is sucked back into the cleaning apparatus will. The disadvantage of such a device is that cleaning is periodic, i.e. H. occurs discontinuously. Furthermore, the cleaning process is also impaired by the fact that the foam first hits the surface to be cleaned applied and then must be sucked off from this again. Such a system is also not suitable for objects to be cleaned, that do not tolerate prolonged foam exposure.

309331/0948

Andrejewski, Honke & Gesthuysen, patent attorneys, 4300 Essen 1, Theaterplatz

The present invention is intended to include those enumerated above Defects are eliminated. It is characteristic of the invention, that the foam is guided from the first container to the tool via a different path than from the tool back to the second container. It can then be set up that there is constant overpressure in the first container and constant underpressure in the second container prevails. This in turn means that at the same time that foam is directed towards the tool, the used foam can be discharged, d. H. the cleaning apparatus according to the invention works continuously, without interruptions. Included it is clear that a continuously operating apparatus works much faster than an intermittent one. Next is It is an advantage if the foam only wets the surface to be cleaned for as short a time as possible.

If there is a very large pressure gradient between the two containers, so, under certain circumstances, the cleaning liquid in the foam formation tank can occur during long, uninterrupted cleaning periods run out. For this reason, in a favorable embodiment of the invention, a construction has been chosen at which is equipped with a valve connection between the blower pressure side and the second container. Thereby exists the possibility of creating an overpressure in the second container for a short time while the cleaning liquid enters the first container flows. In order to avoid reverse flow at all costs, the between the a non-return valve on both containers,

The invention will now be described by way of example with reference described in more detail on the accompanying drawings. In the drawings show:

309831/0948

Andrejewski, Honke & Gesthuysen, patent attorneys, 4300 Essen 1, Theaterplatz

1 shows a cleaning apparatus according to the invention in section;

FIG. 2 shows a section along the straight line II-II indicated in FIG. 1,

FIG. 3 shows a section along the straight line indicated in FIG. 1 HI-IIIf

4 shows a cleaning apparatus according to the invention in a schematic - shear representation.

The main components of the cleaning apparatus are the tanks 2 and 3, the air blower 5 and the cleaning tool 1 formed. The cleaning tool comprises one or more stationary or rotating brushes and is via two hoses connected to the cleaning apparatus. The one with a valve Hose 20 provided with 25 takes its exit from the upper part of the first container 2, i. H. of the foaming tank, and directs the foam 10 to the cleaning tool 1. The second, with Hose 31 equipped with a non-return valve guides the used foam 18 into the second container 3 of the cleaning apparatus. In the containers 2 and 3 there is cleaning liquid 4, and the containers are interconnected by a check valve 23 provided connecting line 22 connected. weather the two containers have bottom valves 26 and 27 which are used to drain the liquid from the containers.

The open air leads to the suction side 12 of the air blower 5 a connection provided with a valve 13 and from the upper part of the container 3 a connection likewise provided with a valve 11. hene connection. From the pressure side 7 of the fan, a connection provided with a valve 21 leads to the upper part of the

309831/0948

Andrejewski, Honke & Gesthuysen, patent attorneys, 4300 Essen 1, Theaterplatz 3

second container 3, a connection provided with a valve 8 to a point below the liquid level 9 of the container 2 and a connection to the open air. In order to filter off the used foam so that it cannot reach the suction side 12 of the fan 5, the container 3 is divided into individual compartments by filters 19. Here, the return port 17 must on the one hand and the blower ¹ leading connection path are the openings of the container 3 to the suction side 12 to the other on opposite sides of the filter 19th The return line 31 is also equipped with a removable filter chamber 24.

In the embodiment shown in the example, the valves 14, 8, 21, 11 and 13 take the form of nested cylinders. The cylinders 28 and 29 are provided with openings 30 in such a way that when the cylinders are rotated in relation to one another, the openings with one another come to cover and the valve in question is then open. All five of the aforementioned valves are the same Cylinder or its extension arranged so that there is a mutual coupling of their movements. Size and Position of the openings are programmed in advance so that by turning parts of the inner cylinder with the help of a single Operating lever 32 regulates all five valves and at the same time controls all functions of the cleaning apparatus can. The tank bottom valves are open while the machine is being cleaned 26 and 27 are closed, whereas the valve 25 of the foam line 20 is open.

The cleaning apparatus works in the following way:

The operating lever 32 of the apparatus has the three main positions I, II and III. In addition, the operating lever can be used in any brought any position between positions I and II

309831/0948

Andrejewski, Honke & Gesthuysen, patent attorneys, 4300 Essen 1, Theaterplatz 3

~ "6 -

will. In the basic position I, the valves 14 and 11 are open, while the valves 8, 21 and 13 are closed. Work now the fan 5, negative pressure arises in the container 3, and the apparatus sucks up the possibly via the return hose 31 the foam located on the surface to be cleaned. When the operating lever 32 is adjusted, the valve 8 begins to open and to close the valve 14 accordingly. In this case, compressed air flows through the pipe 6 into the container 2 to a point below of the liquid level 9. The air bubbling in the cleaning liquid 4 leads to the formation of foam 10, which over the hose 20 is guided to the tool 1 and thus to the object to be cleaned. The further the control lever moves Position II is adjusted, the more compressed air reaches the container 2 and the more extensive the formation of foam 10. In position II of the operating lever 32, the valve 8 is fully open, the valve 14 is completely closed. Of the The machine is now working at full power and foam formation has reached its maximum. Since at the same time foam from the too cleaning object is vacuumed is an uninterrupted operation Long periods of work possible.

In position III of the operating lever 32, the valves 14, 8 and 11 close, and the valves 21 and 13 are opened. The aim is to generate excess pressure in the container 3, so that cleaning liquid 4 from the container 3 into the container 2 flows. Such a transfer of washing liquid is then necessary if when working in long, uninterrupted periods, the liquid in the container 2 turns into foam has been converted and has become liquid again, has accumulated in the container 3. Of course there is a transfer of cleaning liquid via the tube 22 also takes place during cleaning. However, the position III of the lever 32 still has a second function: by closing the valve 25 and

309831/0948

Andreiewski, Honke & Gesthuysen, patent attorneys, 4300 Essen 1, Theaterplatz

and open the boom valves 26 and 27 of containers 2 and 3 a negative pressure is generated in both containers for the purpose of draining the cleaning liquid 4.

For a person skilled in the art it is clear that the individual embodiments of the invention can vary within the scope of the following claims. So can with the apparatus by using different Tools and cleaning agents Surfaces of almost any kind can be cleaned.

309831/0948

Claims (7)

Andrejewski, Honke & Gesthuysen, patent attorneys, 4300 Essen I, Theaterplatz - 8 patent claims: 1.Cleaning apparatus for cleaning (washing) floors, carpets, Windows and the like using a tool (1) suitable for cleaning, e.g. B. a brush, which of two Containers (2, 3) containing detergent (4), which are used to transfer the detergent from one container to the other are connected to one another, an air blower (5) connected to the containers for regulating the prevailing in the containers Pressure, a pipe (6) through which for the purpose of forming Foam (10) from the pressure side of the fan via a valve (8) to a point below the liquid level (9) of the air first container (2), a connection provided with a valve (11) from the second container (3) to the suction side (12) of the fan is provided with a valve (13) connection from the free air to the suction side of the fan, one with a Valve (14) provided connection from the pressure side of the blower to the free air, an opening (15) in the first container, via which foam is directed to the cleaning tool, one opening to the second container with a non-return valve (16) provided return opening (17), through which the used foam (18) is brought back into the cleaning apparatus and at least one filter (19) built into the second container, which divides the container into compartments, 6O that the return opening and the opening of the connections leading to the suction side of the blower are located on different sides of this filter, characterized in that the foam (10) from the first container (2) along a different path (20) to the tool (!), like from the tool back to the second container (3). 309831/0948 7302840 Andrejewski, Honlce & Gesthuysen, patent attorneys, 4300 Essen 1, Theaterplafz 3 2. Cleaning apparatus according to claim 1, characterized in that that from the pressure side (7) of the fan (5) there is a connection provided with a valve (21) to the second container (3). 3. Cleaning apparatus according to claim 1 or 2, characterized in that that the connection (22) existing between the containers (2, 3) is equipped with a check valve (23). 4. Cleaning apparatus according to claim 1, 2 or 3, characterized in that that the used foam (18) returning from the tool (1) via a removable and replaceable filter chamber (24) is directed. 5. Cleaning apparatus according to one of claims 1 to 4, characterized characterized in that the connection (20) leading to the tool (1) is equipped with a shut-off valve (25). 6. Cleaning apparatus according to one of claims 1 to 5, characterized characterized in that both containers (2, 3) are each equipped with a bottom valve (26, 27). 7. Cleaning apparatus according to one of claims 1 to 6, characterized characterized in that the valve (13) of the connection leading from the free air to the suction side (12) of the fan (5), the valve (11) the connection leading from the second container (3) to the blower suction side, the valve (21) from the pressure side (7) of the blower to the second container leading connection, the valve (8) from the blower pressure side to the first container (2) leading connection, and the valve (14) of the connection leading from the blower pressure side to the free air of interlocking Cylinders (28, 29) are formed, the jacket of which is provided with openings (30), and to open and Closing the valve can be rotated against each other. 309831/0948