Suction hose, nozzle attachment and cleaning apparatus

Abstract

The invention relates to a suction hose for a cleaning apparatus, in particular for a spray extraction apparatus, wherein the suction hose comprises a first suction hose end and a second suction hose end, wherein the second suction hose end is fluidically connectable to a suction connection of the cleaning apparatus, wherein the suction hose comprises a spray hose with a first spray hose end and a second spray hose end, and wherein the second spray hose end is fluidically connectable to a fluid connection of the cleaning apparatus, characterised in that the first suction hose end is connected or connectable to a suction nozzle, and in that the suction nozzle and the first suction hose end are rotatable relative to one another.

Description

[0001] Suction hose, nozzle attachment and cleaning device

[0002] The present invention relates to a suction hose for a cleaning device, in particular for a spray extraction device, wherein the suction hose comprises a first suction hose end and a second suction hose end, wherein the second suction hose end is fluidly connectable to a suction connection of the cleaning device, wherein the suction hose comprises a spray hose with a first spray hose end and a second spray hose end, and wherein the second spray hose end is fluidly connectable to a fluid connection of the cleaning device.

[0003] The present invention further relates to a nozzle attachment for a suction nozzle of a cleaning device, in particular for a spray extraction device, which suction nozzle comprises a handpiece and the nozzle attachment.

[0004] The present invention relates to a cleaning device, in particular in the form of a portable cleaning device, comprising a suction device, a suction connection which is fluidly connected to the suction device, and a suction hose which is connected or connectable to the suction connection.

[0005] Such cleaning devices are known in various designs. For example, they are used in the form of spray extraction devices, particularly with suction hoses and nozzle attachments of the type described above.

[0006] A particular problem with such cleaning devices is their handling. Suction hoses of the type mentioned above can become so entangled with the spray hose that their handling is often difficult for the user. Therefore, it is an object of the present invention to improve a suction hose, a nozzle attachment, and a cleaning device of the type described above so that they are easier to handle.

[0007] This object is achieved according to the invention in a suction hose of the type described at the outset in that the first suction hose end is connected or connectable to a suction nozzle, and that the suction nozzle and the first suction hose end are designed to be rotatable relative to one another.

[0008] Such a design enables improved handling, particularly when used with a spray extraction device. Thanks to the proposed refinement, the entire suction hose does not need to be rotated when the suction nozzle is to be rotated; instead, it is sufficient for a user to simply rotate the suction nozzle relative to the suction hose, in particular relative to the first suction hose end. This can prevent unwanted twisting and thus pinching of the suction hose and / or spray hose, particularly when the suction hose includes a spray hose for the cleaning fluid to be dispensed.

[0009] It is advantageous if the suction nozzle and the first suction hose end can be rotated around a longitudinal axis defined by the connection area. This can improve handling of the suction hose.

[0010] The handling of the suction hose and the cleaning device can be particularly improved if the spray hose is surrounded by the suction hose. For example, it can be arranged or positioned inside the suction hose and extend over the entire length of the suction hose or even beyond. However, it can also be advantageous if the spray hose is arranged or molded onto the outside of the suction hose. For example, it can be detachably connected to the suction hose so that it can be removed or replaced, for example when it is not needed or if it is damaged. The suction hose and the cleaning device can be designed simply and cost-effectively if the spray hose is designed separately from the suction hose and if the spray hose and the suction hose are arranged or designed so that they can be rotated relative to one another.This makes it possible, in particular, to replace a damaged suction hose without having to replace the spray hose if the latter is still fully functional. Conversely, this is also possible with a damaged spray hose. The twistability of the spray hose and suction hose prevents unwanted twisting of the spray hose and suction hose. This prevents the suction hose and / or spray hose from becoming pinched.

[0011] It is advantageous if the suction nozzle comprises a handpiece and at least one nozzle attachment, and if the handpiece and the suction hose are rotatable relative to one another. Such a configuration enables a user to move and rotate the handpiece as required to complete a cleaning task. However, the suction hose does not have to rotate and can remain in its position or rotational setting. This requires less force from the user during cleaning. This improves the handling of the suction hose. The handpiece can, in particular, be permanently connected to a nozzle attachment or formed integrally, in particular monolithically, with a nozzle attachment.

[0012] It is advantageous if the handpiece and the at least one nozzle attachment are designed to be detachably connected to one another. Such a design makes it possible, in particular, to keep the handpiece permanently connected to the first suction hose end and to simply couple different nozzle attachments to the handpiece for different cleaning tasks.

[0013] The handpiece and the at least one nozzle attachment can be coupled to one another in a simple manner if the suction nozzle comprises a suction nozzle connection device for the force-locking and / or form-locking connection of the handpiece and the at least one nozzle attachment in a suction nozzle connection position.

[0014] The suction nozzle can be designed simply and cost-effectively if the suction nozzle connection device is designed in the form of a locking or snap-in connection device.

[0015] For handling the suction nozzle, it is advantageous if the suction nozzle connecting device comprises first and second suction nozzle connecting elements, which are arranged or formed on the one hand on the handpiece and on the other hand on at least one nozzle attachment. The first and second suction nozzle connecting elements are engaged in a force-locking and / or positive-locking manner in the suction nozzle connecting position and are completely separated from one another in a suction nozzle separating position. The first and second suction nozzle connecting elements can, for example, be designed in the form of interacting locking or snap-in connecting elements, for example in the form of a locking recess formed on the handpiece and a locking lug movable relative to the locking recess on at least one nozzle attachment.

[0016] Advantageously, the at least one nozzle attachment comprises a nozzle attachment suction channel and a nozzle attachment spray channel. Such a nozzle attachment can advantageously be used in conjunction with a spray extraction device. Thus, the suction nozzle can not only pick up dirt through the nozzle attachment suction channel, but also discharge cleaning fluid through the nozzle attachment spray channel.

[0017] A particularly compact design of the at least one nozzle attachment can be achieved in particular if the nozzle attachment spray channel is arranged or formed within the nozzle attachment suction channel or is surrounded by the nozzle attachment suction channel. In order to be able to dispense cleaning fluid in a simple and defined manner, it is advantageous if the nozzle attachment spray channel comprises a first nozzle attachment spray channel end and a second nozzle attachment spray channel end, and if a nozzle attachment spray channel outlet is arranged or formed on the first nozzle attachment spray channel.

[0018] To apply the cleaning fluid as finely and as extensively as possible, it is advantageous if a spray nozzle is arranged or formed on the nozzle attachment spray channel. This can be located, for example, at one of the two ends of the nozzle attachment spray channel or even between them.

[0019] It is advantageous if the spray nozzle is arranged or formed between the first nozzle attachment spray channel end and the second nozzle attachment spray channel end. In particular, a spray of cleaning fluid exiting through the spray nozzle can be limited by a section of the nozzle attachment spray channel. This can prevent, for example, an undefined application of the cleaning fluid.

[0020] The suction nozzle can be designed simply and compactly if the spray nozzle forms the nozzle attachment spray channel outlet.

[0021] The at least one nozzle attachment can be designed particularly cost-effectively and compactly if the spray nozzle is integrally formed, in particular monolithically, onto the nozzle attachment. This makes it possible, in particular, to form the nozzle attachment as a plastic injection-molded part, albeit in a single operation. This eliminates the need for mounting the spray nozzle on the nozzle attachment.

[0022] The spray nozzle can be easily designed in the form of a cross-sectional constriction at the nozzle attachment spray channel. In particular, it can be designed as a cross-sectional constriction at the first nozzle attachment spray channel end. It is advantageous if the nozzle attachment suction channel comprises a first nozzle attachment suction channel end and a second nozzle attachment suction channel end, and if a nozzle attachment suction channel cross-section of the nozzle attachment suction channel increases continuously from the first nozzle attachment suction channel end to the second nozzle attachment suction channel end. This configuration makes it possible, in particular, to design the nozzle attachment suction channel as an injection-molded part. In addition, the speed of the suction flow at the first nozzle attachment suction channel end can be higher than at the second nozzle attachment suction channel end, so that dirt can be vacuumed up particularly easily with the nozzle attachment.

[0023] Preferably, the cross-section of the nozzle attachment spray channel decreases continuously from the first nozzle attachment spray channel end to the spray nozzle and increases continuously from the spray nozzle to the second nozzle attachment spray channel end. This design of the nozzle attachment spray channel makes it possible, in particular, to form it by injection molding in a single operation.

[0024] It is advantageous if at least one nozzle attachment is designed in the form of one of the nozzle attachments described below. The suction hose as a whole then also has the advantages described in connection with preferred embodiments of nozzle attachments.

[0025] In order to simplify the assembly of the suction hose and the cleaning device, it is advantageous if the first end of the spray hose protrudes into the handpiece and protrudes over the first end of the suction hose.

[0026] In order to achieve a stable, fluid-tight connection between the spray hose and the handpiece, it is advantageous if the first end of the spray hose is held non-twist on the handpiece.

[0027] Furthermore, it is advantageous if the handpiece comprises a handpiece spray channel, if the handpiece spray channel comprises a first handpiece spray channel end and a second handpiece spray channel end, and if a valve device is arranged or configured between the first handpiece spray channel end and the second handpiece spray channel end for opening and closing the handpiece spray channel. This configuration enables a user, in particular, to easily dispense cleaning fluid using the suction nozzle. To do so, they only need to actuate the valve device to open the handpiece spray channel.

[0028] For handling the cleaning device, it is advantageous if the valve device comprises an actuating element for actuating the valve device. For example, a user can actuate the valve device with a finger, which interacts with the actuating element. The actuating element can be arranged on the handpiece, in particular, pointing diametrically opposite to one of the suction nozzle connecting elements with respect to a longitudinal axis of the handpiece. This prevents the suction nozzle connecting element from being inadvertently actuated and the suction nozzle attachment from being detached from the handpiece when the actuating element is actuated.

[0029] Preferably, the actuating element is designed in the form of a pivoting lever mounted on the handpiece. Such a pivoting lever can be easily implemented and can also interact directly with a valve element of the valve device.

[0030] It is advantageous if the valve device comprises a prestressing element for holding the valve device in a basic position in which the handpiece spray channel is closed. This configuration makes it possible, in particular, to dispense cleaning fluid only as a result of actuation of the valve device. The valve device can be designed in a simple manner if the prestressing element is in the form of a compression spring. This can be designed, for example, in the form of a helical spring or a leaf spring. It is advantageous if the prestressing element holds a valve member of the valve device under prestress in a closed position. This ensures, in particular, that the nozzle attachment spray channel remains defined and reliably closed in the closed position.

[0031] It is advantageous if the actuating element is designed to cooperate with the valve member to move the valve member, counter to the action of the prestressing element, from the closed position into an open position deflected from the closed position. This can be achieved, for example, if the actuating element on the handle is pivoted, thereby moving the valve member in the manner described.

[0032] Preferably, the second nozzle attachment spray channel end and the first handpiece spray channel end are sealed relative to each other in the suction nozzle connection position. This ensures, in particular, that the cleaning fluid can only escape at the first nozzle attachment spray channel end and not where the second nozzle attachment spray channel end and the first handpiece spray channel end engage with each other.

[0033] According to a further preferred embodiment, the handpiece can comprise a handpiece suction channel, the handpiece suction channel comprises a first handpiece suction channel end and a second handpiece suction channel end, and the second nozzle attachment suction channel end and the first handpiece suction channel end are sealed relative to one another in the suction nozzle connection position. This configuration has the particular advantage that dirt or a dirty water solution cannot escape where the second nozzle attachment suction channel end and the first handpiece suction channel end engage with one another.

[0034] Preferably, the at least one nozzle attachment and the handpiece are sealed relative to each other in the suction nozzle connection position. This improves the cleaning effect of the cleaning device, as dirt or a dirty solution cannot escape into a transition area between the at least one nozzle attachment and the handpiece.

[0035] The object stated at the outset is further achieved according to the invention in a nozzle attachment of the type described at the outset in that the nozzle attachment is formed in one piece, in particular monolithically.

[0036] This allows the nozzle attachment to be designed in a simple and cost-effective manner. The at least one nozzle attachment can, for example, be designed in the form of a narrow crevice nozzle. In particular, it can also be formed by injection molding in a single step.

[0037] Advantageously, the at least one nozzle attachment comprises a nozzle attachment suction channel and a nozzle attachment spray channel. Such a nozzle attachment can advantageously be used in conjunction with a spray extraction device. Thus, the suction nozzle can not only pick up dirt through the nozzle attachment suction channel, but also discharge cleaning fluid through the nozzle attachment spray channel.

[0038] A particularly compact design of the at least one nozzle attachment can be achieved in particular if the nozzle attachment spray channel is arranged or formed within the nozzle attachment suction channel or is surrounded by the nozzle attachment suction channel.

[0039] In order to be able to dispense cleaning fluid in a simple and defined manner, it is advantageous if the nozzle attachment spray channel comprises a first nozzle attachment spray channel end and a second nozzle attachment spray channel end and if a nozzle attachment spray channel outlet is arranged or formed on the first nozzle attachment spray channel.

[0040] To apply the cleaning fluid as finely and as extensively as possible, it is advantageous if a spray nozzle is arranged or formed on the nozzle attachment spray channel. This can be located, for example, at one of the two ends of the nozzle attachment spray channel or even between them.

[0041] It is advantageous if the spray nozzle is arranged or formed between the first nozzle attachment spray channel end and the second nozzle attachment spray channel end. In particular, a spray of cleaning fluid exiting through the spray nozzle can be limited by a section of the nozzle attachment spray channel. This can prevent, for example, an undefined application of the cleaning fluid.

[0042] The suction nozzle can be designed simply and compactly if the spray nozzle forms the nozzle attachment spray channel outlet.

[0043] The at least one nozzle attachment can be designed particularly cost-effectively and compactly if the spray nozzle is integrally formed, in particular monolithically, onto the nozzle attachment. This makes it possible, in particular, to form the nozzle attachment as a plastic injection-molded part, albeit in a single operation. This eliminates the need for mounting the spray nozzle on the nozzle attachment.

[0044] The spray nozzle can be easily configured as a cross-sectional constriction at the nozzle attachment spray channel. In particular, it can be configured as a cross-sectional constriction at the first end of the nozzle attachment spray channel.

[0045] It is advantageous if the nozzle attachment suction channel comprises a first nozzle attachment suction channel end and a second nozzle attachment suction channel end, and if a nozzle attachment suction channel cross-section of the nozzle attachment suction channel increases continuously from the first nozzle attachment suction channel end to the second nozzle attachment suction channel end. This configuration makes it possible, in particular, to design the nozzle attachment suction channel as an injection-molded part. In addition, a speed of the suction flow at the first nozzle attachment suction channel end can be higher than at the second nozzle attachment suction channel end, so that dirt can be vacuumed up particularly easily with the nozzle attachment. Preferably, a nozzle attachment spray channel cross-section of the nozzle attachment spray channel decreases continuously from the first nozzle attachment spray channel end to the spray nozzle, and increases continuously from the spray nozzle to the second nozzle attachment spray channel end.This design of the nozzle attachment spray channel makes it possible, in particular, to form it by injection molding in one operation.

[0046] The object stated at the outset is achieved according to the invention in a cleaning device of the type described at the outset in that the suction hose is designed in the form of one of the preferred embodiments of a suction hose described above.

[0047] A cleaning device equipped with such a suction hose then also offers the advantages described above in connection with preferred embodiments of suction hoses. In particular, such a suction hose improves the overall handling of the cleaning device.

[0048] It is advantageous if a second end of the suction hose is connected to the suction connection or can be detachably connected. Depending on the design, the suction hose can remain permanently attached to the cleaning device or be replaced as needed.

[0049] According to a further preferred embodiment, the cleaning device can be provided with a fluid dispensing device for dispensing a cleaning fluid. For example, the cleaning device can be designed as a spray extraction device that can dispense a cleaning fluid onto a surface to be cleaned. The dispensed cleaning fluid can then be sucked back from the surface to be cleaned using the suction device.

[0050] It is advantageous if the fluid delivery device comprises the spray hose, and if the spray hose comprises a first spray hose end and a second spray hose end. Such a spray hose makes it possible, in particular, to convey the cleaning fluid to a location remote from the cleaning fluid container without having to move the cleaning device.

[0051] A cleaning fluid can be easily dispensed if the fluid dispensing device includes a conveying device. The conveying device can pump the cleaning fluid from the cleaning fluid container, for example, via a connecting line to a user-operated handpiece with a spray nozzle.

[0052] Conveniently, the second end of the spray hose is fluidly connected to the conveying device. This allows the cleaning fluid to be conveyed from the conveying device to the second end of the spray hose and then via the spray hose to the suction nozzle's handpiece.

[0053] It is advantageous if the cleaning device includes a fluid connection and if the second spray hose end is fluidly connected to the fluid connection, particularly in a fluid-tight manner. This design makes it possible, in particular, to convey the cleaning fluid through the fluid connection into the spray hose. Sealing the fluid connection and the second spray hose end prevents cleaning fluid losses in the connection area.

[0054] The cleaning device can be designed to be particularly compact if the fluid connection is surrounded by the suction connection. In particular, a suction hose can be connected to the cleaning device in this way, in which the spray hose is arranged inside the suction hose. Alternatively, it can also be advantageous if the fluid connection is arranged or formed outside the suction connection, in particular next to the suction connection. This design enables in particular simple and, if necessary, separate coupling to a suction hose which includes an external spray hose. In order to be able to convey the cleaning fluid into the spray hose, it is advantageous if the fluid connection is fluidly connected to the conveying device, in particular to a pressure side thereof.

[0055] According to a further preferred embodiment, it can be provided that the cleaning device is designed in the form of a spray extraction device.

[0056] It is advantageous if the cleaning device comprises a device carrier, a power supply connection and at least one collecting container, if the suction device is arranged or formed on the device carrier and is fluidly connected to the at least one collecting container, if the cleaning device defines a device longitudinal axis which, during intended operation, extends transversely, in particular perpendicularly, to the direction of gravity, that the suction device, the at least one collecting container and the at least one power supply connection are arranged or positioned along the device longitudinal axis or substantially along the device longitudinal axis such that the at least one collecting container is arranged on the device carrier between the suction device and the at least one power supply connection. The cleaning device can thus be carried easily and comfortably.The special arrangement of the suction device, collection container, and power supply connection on the device carrier makes it possible to specify the center of gravity of the cleaning device as centrally as possible, i.e., in the middle. Ideally, the center of gravity is located in the area of ​​at least one collection container, so that the position of the center of gravity changes little or not even when the collection container is filled. This design makes it possible to lift portable cleaning devices with minimal effort, especially since the proposed arrangement of their components ensures excellent balance.

[0057] Preferably, the power supply connection comprises an interface for detachable connection to a battery. This allows, in particular, the cleaning device to be designed as a battery-operated cleaning device, allowing it to be operated independently of the mains.

[0058] It is advantageous if the interface includes a battery receptacle for a force-fitting and / or positive connection to a battery housing. In particular, the battery receptacle can be arranged or configured such that the battery can be inserted into the receptacle in the direction of gravity, for example, from above. This eliminates the need for additional securing of the battery on the cleaning device when the device is placed on a flat or substantially flat surface.

[0059] Advantageously, the interface is designed for the electrically conductive connection of electrical components of the cleaning device to the battery terminals. This can be, in particular, the suction device or a control device of the cleaning device, or even a switching device for activating or deactivating the suction device. If the cleaning device optionally includes a conveying device, for example, a pump, the interface is also electrically conductively connected directly or indirectly to the conveying device in order to supply it with electrical energy.

[0060] It is advantageous if the power supply connection comprises a connection device for connecting the cleaning device to a power grid. The connection device can, in particular, comprise a connection cable for connecting the cleaning device directly to a power grid. However, the connection device can also comprise a connection socket for selectively engaging a connection cable. For example, the cleaning device can thus be used either battery-operated or mains-operated.

[0061] According to a further preferred embodiment, it can be provided, particularly in a cleaning device of the type described above, that the device carrier comprises a container receptacle, and that the container receptacle is designed to accommodate the at least one collection container when the cleaning device is in an operational state. This configuration makes it possible, in particular, to arrange the at least one collection container in a defined manner on the cleaning device in order to operate the cleaning device. In particular, dirt can thus be conveyed into the at least one collection container by the suction device.

[0062] It is advantageous if the cleaning device defines a front and a rear and if the suction device is arranged or formed in a front device carrier section comprising the front and if the power supply connection is arranged or formed on a rear device carrier section comprising the rear. This configuration enables, in particular, optimal balancing of the cleaning device. Arranging the suction device in the front device carrier section makes it possible, in particular, to provide a suction connection in this area as well, which can be connected to a suction hose. In order to balance the weight of the suction device, it is advantageous to arrange the power supply connection on the rear device carrier section because, for example, a battery coupled to the power supply connection can then form a counterweight to the suction device.

[0063] Preferably, the container receptacle is arranged or formed on a central device carrier section, and the central device carrier section is arranged or formed between the front and rear device carrier sections. Arranging or forming the container receptacle in the proposed manner makes it possible, in particular, to specify the center of gravity of the cleaning device on the central device carrier section. The position of the center of gravity then changes little or not at all when the container receptacle is loaded with items to be cleaned or a dirty water. It is advantageous if the fluid dispensing device comprises a cleaning fluid container. The cleaning fluid required for cleaning can then be filled into this cleaning fluid container and dispensed using the fluid dispensing device of the cleaning device. The cleaning fluid can, in particular, be water or a mixture of water and a cleaning agent.

[0064] A particularly compact design of the cleaning device can be achieved if the conveying device is arranged or configured in the front device carrier section. In particular, it can be arranged or configured in the front device carrier section together with the suction device.

[0065] A cleaning fluid can be conveyed easily if the conveying device is designed in the form of a pump.

[0066] The cleaning device can be implemented simply and cost-effectively if the pump is designed as a diaphragm pump or a piston pump. For example, a diaphragm pump can be operated continuously, even if the dispensing of cleaning fluid is prevented, particularly by a valve device on a user-operated handpiece with a spray nozzle.

[0067] Advantageously, the cleaning device, in particular a cleaning device of the type described above, comprises a suction connection arranged or formed on the device carrier for connection to a suction hose. Such a suction connection makes it possible, in particular, to convey dirt or a dirty water solution with the suction hose through the suction connection into the cleaning device, in particular into the at least one collection container.

[0068] The cleaning device is particularly easy to handle if the suction connection is located or configured on the front section of the device carrier. In particular, it can be located or configured on the front of the cleaning device. Alternatively, the suction hose can also be permanently connected to the suction connection.

[0069] It is advantageous if the cleaning device, in particular a cleaning device of the type described above, comprises a suction hose, if the suction hose comprises a first suction hose end and a second suction hose end, and if the second suction hose end is or can be fluidly connected to the suction device. This configuration makes it possible, in particular, for the first suction hose end to pick up dirt during operation of the cleaning device and to convey it through the suction hose to the suction device.

[0070] The cleaning device can be handled easily if the second end of the suction hose is connected to the suction connection or can be detachably connected.

[0071] To easily and precisely pick up dirt, it is advantageous if the first end of the suction hose is connected or detachably connectable to a suction nozzle. In particular, different types of suction nozzles can be provided to optimally solve different cleaning tasks. For example, suction nozzles can be designed as surface suction nozzles, upholstery suction nozzles, or crevice suction nozzles.

[0072] Preferably, the first spray hose end is connected to the second handpiece spray channel end in a fluid-tight manner. This allows the cleaning fluid to be directed through the spray hose into the handpiece spray channel without loss.

[0073] It is advantageous if the fluid connection is arranged or formed on the front device carrier section, in particular on the front of the cleaning device.

[0074] To prevent the spray hose from twisting, which is particularly disadvantageous when the spray hose is guided on, or in particular in, the suction hose, it is advantageous if the second spray hose end is held rotatably on the cleaning device, in particular rotatably relative to the fluid connection about a fluid connection longitudinal axis defined by the latter. Thus, the second spray hose end can rotate relative to the fluid connection if, for example, the first spray hose end is rotated, for example, by rotating the handpiece relative to the first suction hose end in the manner described above.

[0075] For handling of the cleaning device, it is also advantageous if the center of gravity of the cleaning device, particularly regardless of the intended filling of the at least one collection container and / or the cleaning fluid container, is located in the area of ​​the container holder, particularly in the middle device carrier section. This allows the cleaning device to be optimally balanced. This can be achieved, for example, by a correspondingly balanced arrangement of the cleaning device components in the front and rear device carrier sections.

[0076] According to a further preferred embodiment, it can be provided that the at least one collection container is designed in the form of a dirty water container and that the dirty water container and the cleaning fluid container are arranged together in the container receptacle in a spray extraction working position of the cleaning device. This embodiment makes it possible, in particular, to use the cleaning device as a spray extraction device. The container receptacle thus serves, in particular, to accommodate both the cleaning fluid container and the dirty water container. This embodiment has the particular advantage that the center of gravity of the cleaning device changes only slightly in its location and position when the cleaning fluid is dispensed and taken up again with the cleaning device and then fills the dirty water container.During operation of the cleaning device, the center of gravity then gradually shifts slightly in a direction from the cleaning fluid container to the dirty water container. Furthermore, it is advantageous if the at least one collection container is designed in the form of a suction container and is arranged in the container receptacle when the cleaning device is in a suction working position. Such a suction container can, in particular, completely or essentially completely fill the container receptacle. For example, in a modularly designed cleaning device, it can be inserted into the container receptacle as an alternative to the dirty water container and the cleaning fluid container. With such a suction container, the cleaning device can be used exclusively for vacuuming, so that the cleaning device can take on the function of a wet / dry vacuum cleaner.

[0077] It is advantageous if the suction container defines a suction container volume, if the dirty water container defines a dirty water container volume, if the cleaning fluid container defines a cleaning fluid container volume, and if the suction container volume approximately corresponds to the sum of the dirty water container volume and the cleaning fluid container volume. Such a configuration, in particular, enables the suction container to optimally utilize the installation space defined by the container mount. This allows the suction container volume to be maximized when the cleaning device is operated purely as a suction device.

[0078] In particular, to design the cleaning device so that, when operated as a spray extraction device, it safely and reliably collects the entire cleaning fluid contained in the cleaning fluid container after application, it is advantageous if the cleaning fluid container volume corresponds to a maximum of approximately 50% of the dirty water container volume. Such a size ratio makes it possible, in particular, to arrange or form a separator in the dirty water container for separating liquid and solid dirty water components from a dirty water flow. To prevent the cleaning fluid from escaping from the cleaning fluid container in an undesired manner, it is advantageous if the cleaning fluid container comprises a cleaning fluid container lid for closing the cleaning fluid container.

[0079] In order to be able to fill the cleaning fluid container with a cleaning fluid, for example water, in a simple manner without having to remove the cleaning fluid container lid, it is advantageous if a filling opening is arranged or formed on the cleaning fluid container lid.

[0080] The cleaning fluid container preferably comprises a closure element for closing the filler opening. This prevents cleaning fluid from escaping through the filler opening in an undesired manner. The closure element can, for example, be arranged on the cleaning fluid container in a movable or deformable manner, in particular pivotable, so as to be moved or deformed from a position in which the filler opening is open to a position in which the filler opening is closed, and vice versa.

[0081] Furthermore, it is advantageous if the insertion opening has a size and a filler opening cross-section that corresponds or substantially corresponds to a size and shape of the at least one nozzle attachment, in particular of the monolithically formed nozzle attachment. Such a configuration makes it possible, in particular, to guide the at least one nozzle attachment through the filler opening into the cleaning fluid container. In this way, the suction hose can be directly flushed with the cleaning fluid and thus cleaned. Furthermore, cleaning fluid for cleaning the cleaning fluid container can be dispensed with the suction nozzle through the at least one nozzle attachment.

[0082] Cleaning fluid can be easily removed from the cleaning fluid container if it has a container outlet which is fluidly connected to the conveying device, in particular to a suction side thereof.

[0083] Preferably, the container outlet is arranged or formed at the bottom of the cleaning fluid container. This allows the force of gravity acting on the cleaning fluid to be utilized to force the cleaning fluid through the container outlet. This allows the capacity of a conveying device for the cleaning fluid to be kept to a minimum.

[0084] In order that cleaning fluid can only escape from the cleaning fluid container when this is desired, it is advantageous if an outlet valve, in particular in the form of a ball valve, is arranged or formed at the container outlet, and if the outlet valve is closed when the cleaning fluid container releases the container receptacle, and if the outlet valve is open when the cleaning fluid container is accommodated in the container receptacle as intended.

[0085] Preferably, a connecting piece is arranged or configured on the container receptacle for fluid-tight coupling to the container outlet when the cleaning fluid container is accommodated in the container receptacle as intended. In particular, the connecting piece can be arranged or configured on a base of the container receptacle, thereby enabling optimal interaction with a container outlet arranged accordingly on the cleaning fluid container.

[0086] To improve the handling of the cleaning device, it is advantageous if the connecting piece comprises a valve actuating element for opening the outlet valve when the cleaning fluid container is accommodated in the container receptacle as intended. The valve actuating element can, for example, be designed in the form of a protruding pin which, in the case of a ball valve, for example, moves the ball into a deflected position against the action of a prestressing element when the cleaning fluid container is inserted into the cleaning receptacle. The cleaning fluid can be conveyed into the spray hose in a particularly simple manner if the connecting piece is fluidly connected to the conveying device. The conveying device can thus, for example, suck the cleaning fluid out of the cleaning fluid container.

[0087] In order to be able to insert the cleaning fluid container into the container receptacle in a defined manner, it is advantageous if at least one spacer, in particular several, is arranged or formed on the cleaning fluid container, which spacer rests against a rear partition wall of the rear device carrier section that delimits the container receptacle. In particular, the cleaning fluid container can thus be used to press the dirty water container against the device carrier in a defined manner, in particular to seal a dirty water container inlet of the dirty water container relative to a dirty water outlet on the container receptacle of the device carrier.

[0088] Preferably, the rear partition wall and a cleaning fluid container wall of the cleaning fluid container, which comprises the at least one spacer, are inclined relative to each other at an angle. This configuration particularly facilitates the insertion of the cleaning fluid container into the container receptacle. In particular, it can have a wedge-shaped contour that facilitates insertion into the container receptacle when the dirty water container is already inserted.

[0089] Preferably, the angle of inclination is in a range of approximately 1° to approximately 5°. Thus, the cleaning fluid container can be shaped like a flat wedge and can be easily inserted between the rear partition wall and a dirty water container already placed in the container receptacle.

[0090] It is advantageous if a cleaning fluid container wall of the cleaning fluid container facing the front housing support section and a dirty water container wall of the dirty water container facing the rear housing support section abut one another in the spray extraction working position, in particular flat. This configuration has the particular advantage that, for example, the dirty water container can be pressed toward the front housing support section above the cleaning fluid container. Appropriate connections for receiving a dirty water solution into the dirty water container can be provided on this, for example. The proposed development thus enables optimal sealing of the dirty water container relative to these connections, which are explained in more detail below.

[0091] In order to be able to pump the dirty water into the dirty water tank, it is advantageous if the dirty water tank has a dirty water tank inlet which is fluidly connected to the suction connection.

[0092] It is advantageous if a dirty water outlet is provided on the tank receptacle, which is fluidly connected to the suction connection, and if the dirty water outlet is fluidly and fluid-tightly connected to the dirty water tank inlet in the spray extraction working position. This allows the dirty water, which is conveyed to the suction hose connection, for example, via the suction hose, to be introduced into the dirty water tank.

[0093] To prevent the dirty water from escaping in the transition area between the dirty water outlet and the dirty water tank inlet, it is advantageous if a sealing element is arranged or configured at the dirty water outlet to seal the dirty water outlet and the dirty water tank inlet relative to each other. The sealing element can, for example, be molded onto the device carrier, for example, made of a thermoplastic elastomer.

[0094] The dirty water tank preferably comprises an air outlet that is fluidly connected to the suction device. This allows the dirty water to be sucked into the dirty water tank, and liquid and solid components in the dirty water tank to be separated, so that only gaseous components of the dirty water, i.e., a gaseous dirty water component, can be sucked in by the suction device.

[0095] Furthermore, it is advantageous if an air inlet is arranged or formed on the container receptacle, which is fluidly connected to the suction device, and if the air outlet is fluidly and fluid-tightly connected to the air inlet in the spray extraction operating position. In particular, a gaseous component of the sucked-in dirty water can be guided out of the dirty water container through the air outlet and through the air inlet to the suction device without loss.

[0096] Here too, it is advantageous if a sealing element is arranged or designed at the air inlet to seal the air inlet and the air outlet relative to each other.

[0097] Preferably, the air inlet and the dirty water outlet define a plane that is slightly inclined relative to the direction of gravity. In particular, this plane can also be defined by a portion of a boundary wall of the container receptacle, on which the air inlet and the dirty water outlet are arranged or formed. This allows for improved sealing of the dirty water container in the container receptacle of the cleaning device, particularly relative to the side wall of the front device carrier section that bounds the container receptacle.

[0098] The cleaning device can be designed to be particularly compact if the dirty water outlet and / or the air inlet are arranged or formed on a side wall of the front device carrier section that delimits the container receptacle. According to a further preferred embodiment, it can be provided that the dirty water outlet defines a dirty water outlet longitudinal axis, that the air inlet defines an air inlet longitudinal axis, and that the dirty water outlet longitudinal axis and the air inlet longitudinal axis run parallel to one another and / or, during normal operation of the cleaning device, transversely, in particular perpendicular, to the direction of gravity. Such a configuration makes it possible, in particular, to insert the dirty water container into the container receptacle and, at the same time, to bring the air outlet into engagement with the air inlet on the one hand, and the dirty water outlet into engagement with the dirty water container inlet in a defined manner.

[0099] The suction device can be easily implemented if it includes a fan.

[0100] Advantageously, the fan defines a rotation axis that, during normal operation, runs parallel or essentially parallel to the direction of gravity. This allows for a space-saving arrangement of the suction device in the front section of the device carrier.

[0101] Advantageously, the rotation axis runs transversely, in particular perpendicular to the longitudinal axis of the dirty water outlet and / or the longitudinal axis of the air inlet. This allows for optimal positioning of the fan in a housing of the cleaning device, regardless of the orientation of the cleaning device relative to the direction of gravity.

[0102] According to a further preferred embodiment, the cleaning device can further comprise a housing defining a housing interior, and a pressure-side suction device outlet of the suction device opens into the housing interior, particularly in the region of the front housing support section. This configuration makes it possible, in particular, to minimize the velocity of the gas flow and then allow it to exit through appropriately suitable openings in the housing. For the handling of the cleaning device, it is particularly advantageous if the cleaning device comprises a switching device for activating and deactivating the suction device.

[0103] Preferably, the switching device is designed to activate and deactivate the fluid delivery device, in particular the conveying device. For this purpose, the switching device can comprise separate switching elements for the suction device and the fluid delivery device. However, it is also possible for only a single switching element to be provided to simultaneously activate and deactivate the suction device and the fluid delivery device.

[0104] Preferably, the switching device is designed to simultaneously activate and deactivate the suction device and the fluid delivery device, in particular the conveying device. Thus, a user can activate the cleaning device for suction and for dispensing a cleaning fluid by a single actuation of the switching device.

[0105] To enable particularly easy handling of the cleaning device, it is advantageous if the switching device is arranged or formed on an upper side of the cleaning device. In particular, it can be arranged or formed on the front device carrier section.

[0106] In order to be able to immediately indicate to a user whether the cleaning device is activated or deactivated, it is advantageous if the switching device is designed in the form of a rotary or toggle switch.

[0107] According to a further preferred embodiment, the conveying device and the suction device can be dimensioned such that the power consumption of the suction device corresponds to at least approximately five times the power consumption of the conveying device, in particular at least approximately ten times. This configuration makes it possible, in particular, to operate the conveying device continuously, even when no cleaning fluid is being dispensed, because this is prevented, for example, by the valve device on the handpiece.

[0108] For easy transport of the cleaning device, it is advantageous if the cleaning device includes a carrying handle arranged or formed on the rear device carrier section and the front device carrier section and comprising a grip section that extends over the container receptacle in a carrying position. This design allows the operator, in particular, to grasp the carrying handle directly above the center of gravity of the cleaning device, so that the cleaning device can be lifted and carried by the user with optimal balance.

[0109] It is advantageous if the center of gravity of the cleaning device is positioned below the handle when in the carrying position. As mentioned, this can improve the comfort of carrying the cleaning device, as the user can grasp the cleaning device at the handle with maximum balance.

[0110] To allow a user direct access to the container holder, it is advantageous if the carrying handle can be pivoted about a handle pivot axis that runs transversely, particularly perpendicularly, to the direction of gravity during normal operation of the cleaning device. For example, it can be pivoted from a carrying position, in which it engages over the container holder, to a storage or operating position, in which it releases the container holder.

[0111] In an operating position of the cleaning device, the handle section preferably completely exposes the container receptacle and is positioned laterally on the central device support section. This allows the containers of the cleaning device to be easily inserted into the container receptacle and removed therefrom again. Furthermore, in a further preferred embodiment of the cleaning device, in particular also in a cleaning device of the type described above, the cleaning device can be provided with a separation device for separating a liquid dirty water component into the at least one collection container from a dirty fluid stream comprising the liquid and a gaseous dirty water component. The separation device prevents, in particular, liquid from entering the suction device and damaging it.

[0112] A particularly compact design of the cleaning device can be achieved in particular by arranging or forming the separation device in at least one collecting container.

[0113] In order to achieve an efficient separation between liquid and gaseous dirty water components, it is advantageous if the separation device is arranged or formed on at least one collecting container between the dirty water container inlet and the air outlet.

[0114] To prevent the liquid dirty water component contained in the collection container from escaping from the collection container in an undesirable manner, it is advantageous for the at least one collection container to include a removable collection container lid. In particular, this can be designed in the form of a dirty water container lid if the collection container is designed in the form of the dirty water container.

[0115] It is advantageous if the separation device comprises a separation insert that is inserted into the wastewater tank and sealed by the wastewater tank lid. In particular, the separation insert can be removed from the wastewater tank and separated from the wastewater tank lid, allowing the cleaning device and its components to be easily cleaned. The separation device preferably comprises a first separation stage located downstream of the wastewater tank inlet. In this way, liquid and gaseous wastewater components, in particular, can be separated from one another in a first separation step.

[0116] In order to achieve an even better separation between liquid and gaseous dirty water components, it is advantageous if the separation device comprises a second separation stage which is arranged downstream of the first separation stage.

[0117] It is advantageous if the first separation stage includes a deflection element for deflecting the dirty fluid flow entering the dirty water tank during normal operation of the cleaning device in a direction opposite or substantially opposite to the direction of gravity. This allows for an initial, simple separation between liquid and gaseous dirty water components by utilizing gravity to separate them. In particular, the dirty fluid flow can be deflected by a deflection angle of approximately 90°.

[0118] Advantageously, a drain opening is formed on the deflection element in the direction of gravity to drain the liquid dirty water component into the dirty water tank. This prevents, in particular, the liquid dirty water component from flowing back through the dirty water tank inlet into the dirty water outlet.

[0119] In order to reduce the flow velocity of the gaseous dirty water component in particular, it is advantageous if the flow cross-section widens after the deflection element.

[0120] It is advantageous if the first separation stage comprises a deflection bell located downstream of the deflection element and open in the direction of gravity for deflecting the dirty fluid flow, in particular the gaseous dirty water component, in the direction of gravity into the dirty water tank. In this way, the deflection bell can deflect the dirty fluid flow downstream of the deflection element by an additional 180°, separating the liquid and gaseous dirty water components from each other. Together with the deflection element, the dirty fluid flow can be deflected by a total of 270°, for example, by three consecutively arranged right-angled deflections.

[0121] A compact design of the cleaning device can be achieved, in particular, by enclosing the deflection bell in the wastewater tank lid. For example, the wastewater tank lid and the deflection bell can be formed as a single piece, in particular monolithically.

[0122] According to a further preferred embodiment, the second separation stage can comprise a flow chamber for the gaseous dirty water component, arranged above a collecting chamber of the dirty water tank, with a flow chamber inlet that fluidly connects the collecting chamber and the flow chamber, and a flow chamber outlet that is fluidly connected to the suction device. The described configuration makes it possible, in particular, to arrange the flow chamber above the collecting chamber of the dirty water tank, so that a gaseous dirty water component, after being introduced into the collecting chamber through the flow chamber inlet, can be guided into the flow chamber via the collecting chamber and then through the flow chamber outlet to the suction device.

[0123] To prevent liquid dirt fin components from penetrating the flow chamber, it is advantageous if the flow chamber inlet is sealed with a separating element that is both gas-permeable and liquid-impermeable. Separation of liquid and gaseous dirt liquor components can be achieved particularly easily if the separating element is formed by a nonwoven fabric.

[0124] To achieve the lowest possible flow velocity of the gaseous contaminant component through the flow inlet, it is advantageous if the separating element is convexly curved into the flow chamber, counter to the direction of gravity. This allows for the maximum possible opening size for the flow chamber inlet.

[0125] Preferably, the cross-section of the flow chamber inlet is larger than the cross-section of the deflection bell. Thus, the flow velocity in the area of ​​the flow chamber inlet is lower than in the area of ​​the deflection bell. This particularly promotes the separation of liquid and gaseous contaminant components.

[0126] Furthermore, it is advantageous if the flow chamber outlet is open in the direction of gravity and opens into an upper end of a float shaft extending in the direction of gravity.

[0127] Advantageously, the lower end of the float chamber, in the direction of gravity, is fluidly connected to the collection chamber. This allows the liquid dirty water component to flow from the lower end into the float chamber and fill it accordingly as the level in the collection chamber increases. The liquid dirty water component in the float chamber thus also seals the lower and upper ends of the float chamber from each other.

[0128] To prevent coarse dirt from entering the float chamber, it is advantageous to arrange or construct a fluid-permeable filter element at the lower end of the float chamber. The filter element can easily be designed in the form of a sieve.

[0129] To utilize a fill level in the collection chamber, for example, to interrupt a suction flow, it is advantageous to have a floating element arranged in the float chamber that can move parallel to and against the direction of gravity. Such a floating element can, for example, be raised against the direction of gravity as a result of an increase in the fill level in the collection chamber and sink again in the direction of gravity when the collection chamber is emptied.

[0130] In order to prevent the liquid dirty water component from flowing past the floating element, it is advantageous if an inner contour of the float shaft corresponds or substantially corresponds to an outer contour of the floating element.

[0131] Advantageously, the floating element is designed in the form of a sleeve closed on one side and with one end of the sleeve open in the direction of gravity. Such a floating element can easily and safely float on the liquid dirty water component in the float shaft and move according to the fill level in the float shaft.

[0132] Furthermore, it is advantageous if a float shaft outlet, open in the direction of gravity, located at the upper end of the float shaft is fluidly connected to the air outlet. This allows the gaseous dirty water component, after flowing through the flow chamber and entering the upper end of the float shaft, to be redirected by another 180° and then flow into the float shaft outlet and exit the wastewater tank through the air outlet. The second separation stage can thus enable a total redirection of the suction flow by approximately 360°: namely, by approximately 90° upon entering the flow chamber through the flow chamber inlet, by a further approximately 90° upon exiting the float shaft through the flow chamber outlet, and also by the aforementioned approximately 180° from the float shaft to the float shaft outlet. In this way, residues of the liquid dirty water component can be reliably separated from the gaseous dirty water component.

[0133] For a compact design of the cleaning device, it is particularly advantageous if a cross-section of the float shaft outlet is smaller than a cross-section of the float shaft.

[0134] It is advantageous if the float shaft outlet forms a stop for the floating element when moving against the direction of gravity, and if the floating element closes the float shaft outlet in an air outlet closed position when it strikes the float shaft outlet. This design enables the floating element to be used as a valve element to open or close the float shaft outlet, depending on the fill level of the liquid dirty water in the dirty water tank. If the floating element closes the float shaft outlet because the fill level in the dirty water tank is too high, the suction flow is interrupted. The user can notice this immediately. In other words, the cleaning device indicates that the dirty water tank is full by reducing the suction power.

[0135] According to a further preferred embodiment of the cleaning device, in particular a cleaning device of the type described above, the cleaning device can be provided with a flow interruption device for interrupting a suction flow generated by the suction device in an interruption position. Such a flow interruption device can be used, in particular, to indicate to a user that a maximum fill level in the dirty water container has been reached and that they should empty it. To interrupt a flow of dirty fluid, it is advantageous if the flow interruption device comprises a valve arrangement arranged between the dirty water inlet and the air outlet.

[0136] The valve arrangement can be easily configured by including the floating element and the float shaft outlet. As already mentioned, the floating element can form a valve element that closes or opens the float shaft outlet depending on the fill level.

[0137] It is advantageous if the floating element closes the float shaft outlet when in the interrupted position. This interrupts the suction flow, which is immediately noticeable to the user.

[0138] To facilitate cleaning of the flow chamber, it is advantageous if the wastewater tank cover closes the flow chamber against the direction of gravity. This allows it to be removed, especially for cleaning the flow chamber.

[0139] Furthermore, it is advantageous if the flow space is limited in the direction of gravity by a base of the separator insert in the wastewater tank. The base thus separates, in particular, the flow space and the collection space of the wastewater tank.

[0140] A compact design of the separation device can be achieved in particular by forming the flow space inlet in the bottom of the separation insert.

[0141] To improve handling of the cleaning device, for example, during cleaning, it is advantageous if the float shaft comprises an upper shaft section arranged or formed at the bottom of the separator insert. This allows, for example, the float shaft, in particular the upper shaft section, to be easily removed when removing the separator insert from the wastewater tank.

[0142] Preferably, the float shaft comprises a lower shaft section, which adjoins the upper shaft section in the direction of gravity. The float shaft is thus formed jointly by the upper and lower shaft sections.

[0143] For cleaning the cleaning device, it is advantageous if the upper and lower shaft sections are designed to be detachably connected to one another.

[0144] According to a further preferred embodiment of the cleaning container, in particular also in a cleaning container of the type described above, it can be provided that the at least one collecting container comprises a collecting container securing device for securing the collecting container lid on the at least one collecting container in a closed position. The collecting container securing device can in particular be provided on both the dirty water container and the suction container in order to secure their respective lids to the aforementioned container.

[0145] It is advantageous, particularly in a cleaning container of the type described above, for the cleaning fluid container to include a cleaning fluid container securing device for securing the cleaning fluid container lid to the cleaning fluid container in a closed position. This prevents the cleaning fluid container lid from being accidentally removed from the cleaning fluid container.

[0146] It is advantageous if the suction container comprises a suction container inlet and a suction container air outlet, if the suction container is fluidly and fluid-tightly connected to the dirty water outlet on the container receptacle in a suction position, and if the suction container air outlet is fluidly and fluid-tightly connected to the air inlet on the container receptacle. This configuration makes it possible, in particular, to use the cleaning device with the suction container as a pure suction device, for example, as a wet / dry vacuum cleaner.

[0147] To separate gaseous and liquid contaminant components, it is advantageous if a first separation stage on the suction tank includes a deflection element in the form of a baffle plate pointing toward the suction tank outlet and positioned at a distance from it. This allows a contaminant flow to be deflected by approximately 90°, for example, upon introduction into the suction tank.

[0148] In order to achieve an even better separation between gaseous and liquid dirty water components, it is advantageous if a second separation stage on the suction container comprises a separation element that closes the suction container air outlet.

[0149] Liquid and gaseous contaminant components can be easily separated if the separation element includes a filter. This can be a fleece or a net with a sufficiently small mesh size.

[0150] It is advantageous if the separation element is sleeve-shaped and comprises a sleeve wall having at least one opening, and if the filter closes the at least one opening. This ensures with a high degree of probability that only the gaseous contaminant component can pass through the opening and be directed to the suction device, but not the liquid contaminant component.

[0151] For a compact design of the cleaning device, it is particularly advantageous if the separation element extends into the suction container, especially in a direction transverse, especially perpendicular, to the direction of gravity. To operate the cleaning device independently of a power grid, it is advantageous if it includes at least one battery.

[0152] In order to be able to easily charge the battery and, if necessary, replace it with a charged battery when it is empty, it is advantageous if the battery can be detachably connected to the cleaning device.

[0153] Preferably, the battery is rechargeable, allowing it to be used multiple times.

[0154] Furthermore, it can be advantageous, particularly in the case of a cleaning device of the type described above, if the cleaning device is of modular design and if either a single suction container, on the one hand, or a cleaning fluid container together with a dirty water container, on the other hand, or a steam generation module with a steam generation device and a fluid container can be inserted into the container receptacle. Such a design makes it possible, in particular, to use the device carrier as a basic device and to equip the cleaning device with a corresponding module depending on the cleaning task to be solved. As described in detail above, spray extraction devices or suction devices can be designed. If a steam generation module, which comprises a steam generation device and a fluid container, is inserted into the container receptacle, the cleaning device can also be used as a steam cleaning device.

[0155] The following description of preferred embodiments of the invention serves to explain it in more detail in conjunction with the drawings. They show:

[0156] Figure 1: a perspective overall view of an embodiment of a cleaning device in the form of a spray extraction device; Figure 2: a perspective, partially broken view of the arrangement from Figure 1 with dirty water and cleaning fluid containers inserted into a container receptacle of the cleaning device;

[0157] Figure 3: a perspective, partially exploded view of the cleaning device with the front device carrier section opened;

[0158] Figure 4: a schematic representation of suction and cleaning fluid flows through relevant components of the cleaning device;

[0159] Figure 5: a perspective enlarged partial view of the suction connection on the cleaning device with the suction hose separated;

[0160] Figure 6: a view similar to Figure 5, but with the suction hose connected to the suction connection;

[0161] Figure 7: a longitudinal sectional view of the cleaning device from Figure 2;

[0162] Figure 8: an enlarged partial view of the arrangement of Figure 7;

[0163] Figure 9: a further enlarged partial view of the arrangement of Figure 7;

[0164] Figure 10: another partial longitudinal sectional view of the cleaning device of Figure 2;

[0165] Figure 11: an enlarged partial view of the arrangement of Figure 10;

[0166] Figure 12: a cross-sectional view of the arrangement of Figure 2;

[0167] Figure 13: a section of a further cross-sectional view in a plane perpendicular to the section plane of Figure 12;

[0168] Figure 14 is a partial view of a partially sectioned view of a front device carrier portion of the assembly of Figure 2; Figure 15 is an enlarged partial view of the assembly of Figure 1;

[0169] Figure 16: a partially sectioned plan view of part of the arrangement of Figure 1;

[0170] Figure 17: an enlarged partial view of the arrangement of Figure 16;

[0171] Figure 18: a further enlarged partial view of the arrangement of Figure 16;

[0172] Figure 19: a schematic, partially broken representation of a suction hose with integrated spray hose;

[0173] Figure 20: a schematic perspective view of a handpiece with a suction hose arranged thereon and three embodiments of nozzle attachments;

[0174] Figure 21: an exploded view of the handpiece with a first embodiment of a nozzle attachment;

[0175] Figure 22: a partially openwork, perspective view of the assembled arrangement of Figure 21;

[0176] Figure 23: a view of the arrangement of Figure 22 from another side;

[0177] Figure 24: a sectional view taken along line 24-24 in Figure 22;

[0178] Figure 25: an enlarged partial view of area A in Figure 24;

[0179] Figure 26: a sectional view similar to Figure 24, but in a spraying position;

[0180] Figure 27: a sectional view taken along line 27-27 in Figure 26; Figure 28: a view similar to Figure 22 of the handpiece with a further embodiment of a nozzle attachment;

[0181] Figure 29: a sectional view taken along line 29-29 in Figure 28;

[0182] Figure 30: a sectional view along line 30-30 in Figure 29;

[0183] Figure 31: a schematic perspective view of another embodiment of a nozzle attachment;

[0184] Figure 32: a sectional view along line 32-32 in Figure 31;

[0185] Figure 33: a sectional view taken along line 33-33 in Figure 32;

[0186] Figure 34: a partially sectioned view of part of the arrangement of Figure 28;

[0187] Figure 35: a sectional view along line 35-35 in Figure 34;

[0188] Figure 36: a schematic perspective overall view of the cleaning device with a suction container when inserted into the container holder of the cleaning device;

[0189] Figure 37: a schematic perspective overall view of the cleaning device with the suction container inserted into the container holder and the suction container cover removed;

[0190] Figure 38: a plan view of the arrangement of Figure 37 without the lid;

[0191] Figure 39: an enlarged partial view of the arrangement of Figure 38;

[0192] Figure 40: a longitudinal sectional view of the cleaning device of Figure 36; Figure 41: a further longitudinal sectional view of the cleaning device of Figure 36 in a plane parallel to the sectional plane of Figure 40; and

[0193] Figure 42: a schematic representation of a modular cleaning device with different components that can be inserted into the container holder.

[0194] Figures 1 to 3 schematically show a first embodiment of a cleaning device designated overall by reference numeral 10.

[0195] The cleaning device 10 comprises a device carrier 12, a suction device 14 arranged on the device carrier 12, a collecting container 16 in the form of a dirty water container 18 and a power supply connection 20. The collecting container 16 is fluidly connected to the suction device 14, as will be explained in detail below.

[0196] The cleaning device 10 is designed to be portable and comprises a device base 22 to which four flat feet are formed.

[0197] During normal operation, the cleaning device 10 rests with its feet 24 on a flat or substantially flat surface. A longitudinal axis 26, which defines the cleaning device 10 during normal operation, then runs transversely, in particular perpendicularly, to the direction of gravity 28.

[0198] In the cleaning device 10, the collection container 16, the suction device 28, and the power supply connection 20 are arranged or positioned along the device's longitudinal axis 26, or substantially along the same, such that the collection container 16 is arranged on the device carrier 12 between the suction device 14 and the power supply connection 20. The device carrier 12 of the cleaning device 10 comprises a container receptacle 30, which is designed to receive the collection container 16 when the cleaning device 10 is in an operational state.

[0199] The cleaning device 10 further comprises a front side 32 and a rear side 34 facing away from the front side 32 in the opposite direction. The device carrier 12 comprises three device carrier sections between the front side 32 and the rear side 34, namely a front device carrier section 36, a rear device carrier section 38, and a central device carrier section 40 arranged between the front and rear device carrier sections 36 and 38.

[0200] The middle device carrier section 40 extends in the direction of the device longitudinal axis 26 over a length which corresponds to a total length of the front device carrier section and the rear device carrier section 38 together.

[0201] The suction device 14 is arranged in the front device carrier section 36, which encompasses the front side 32. The power supply connection is arranged or formed on the rear device carrier section 38, which encompasses the rear side 34.

[0202] The container holder 30 is arranged or formed on the middle device carrier section 40.

[0203] The embodiment of the cleaning device 10 shown schematically in Figures 1 to 3 is designed in the form of a spray extraction device 42 and comprises a fluid dispensing device, designated overall by the reference numeral 44, for dispensing a cleaning fluid 46. The fluid dispensing device 44 comprises several components.

[0204] Thus, the fluid dispensing device 44 comprises in particular a cleaning fluid container 48 and a conveying device 50 in the form of a pump 52, which in the embodiment shown in the figures is designed in the form of a diaphragm pump 54.

[0205] In an alternative embodiment, the pump 52 is designed in the form of a piston pump.

[0206] The conveyor device 50 is arranged in the front equipment carrier section 36.

[0207] Furthermore, the cleaning device 10 comprises a suction connection 56 arranged or formed on the device carrier 12 for connecting to a suction hose 58 of the cleaning device 10. The suction connection 56 is formed on the front device carrier section 36, namely on the front side 32 of the cleaning device 10.

[0208] The suction connection 56 is formed on the front side 32 in the region of a recess 60, specifically in an upper region of the cleaning device 10 relative to the direction of gravity 28. The recess 60 extends over approximately one third of a total height 62 of the cleaning device 10, starting from an upper side 64 thereof.

[0209] The suction hose 58 comprises a first suction hose end 66 and a second suction hose end 68. The second suction hose end 68 is designed in the form of a hose coupling 70, which, in a connected position as illustrated by way of example in Figures 1 and 7, engages the suction connection 56 in a force-locking and / or form-locking manner. In the connected position, the hose coupling 70 is secured both axially to the suction connection 56 and against rotation relative to the suction connection 56. This is achieved in particular by a non-circular outer contour of the hose coupling 70.

[0210] On the hose coupling 70, a pivotable locking member 72 with a protruding locking lug 74 is formed, which in the connecting position engages in a locking recess 76 formed on the front device carrier section 36 on the suction connection 56.

[0211] A longitudinal axis of the suction connection 56 runs parallel to the device longitudinal axis 26.

[0212] The cleaning device 10 further comprises a fluid connection 78, which is arranged or formed on the front device support section 36, namely on the front side 32. It serves for connection to a spray hose 80, which comprises a first spray hose end 82 and a second spray hose end 84. The spray hose 80 forms part of the fluid dispensing device 44.

[0213] At the second spray hose end 84 there is a nipple 86 which engages in a sealed manner in the fluid connection 78.

[0214] The fluid port 78 is arranged so that it is surrounded by the suction port 56. The fluid port 78 includes a short sleeve-shaped portion into which the nipple 86 engages.

[0215] Surrounding the suction connection 56 is a holder 88 formed with two half-shells that encompass the nipple 86 between two annular flanges 90 and 92 formed on the nipple 86. The nipple 86 and thus the second spray hose end 84 are held in the holder 88 so as to be rotatable about a longitudinal axis of the nipple 86.

[0216] The fluid connection 78 is fluidly connected to the conveying device 50 via a connecting line 94, namely to a pressure side 96 of the conveying device 50. As described, the second spray hose end 84 on the cleaning device 10 is held rotatably relative to the fluid connection 78 about a fluid connection longitudinal axis 98 defined by the latter. The spray hose 80 is surrounded by the suction hose 58. In the illustrated embodiment, the spray hose 80 and the suction hose 58 are formed separately from one another. The suction hose 58 is provided on its outer side with a spiral-shaped reinforcing rib 100.

[0217] In a spray extraction working position of the cleaning device 10, the dirty water tank 18 and the cleaning fluid tank 48 are arranged together in the tank receptacle 30, as shown schematically, for example, in Figures 2 and 10.

[0218] The cleaning fluid container 48 comprises a cleaning fluid container lid 102 for closing the cleaning fluid container 48. Figure 4 schematically shows the cleaning fluid container 48 with the cleaning fluid container lid 102 attached.

[0219] A filling opening 104 is arranged or formed on the cleaning fluid container lid 102. Furthermore, the cleaning fluid container 48 comprises a closure element 106 for closing the filling opening 104. The closure element 106 is movably mounted on the cleaning fluid container lid 102 and is designed in the form of a rubber element with a protruding grip tab 108, which allows the closure element 106 to be pulled out of the filling opening 104.

[0220] The filling opening 104 has a circular filling opening cross-section.

[0221] The cleaning fluid container 48 further comprises a container outlet 110 which is fluidly connected to the conveying device 50, namely to a suction side 112 thereof.

[0222] An outlet valve 114 is arranged or formed at the container outlet 110, specifically in the form of a ball valve 116. The outlet valve 114 is designed such that it is closed when the cleaning fluid container 48 releases the container receptacle 30 or is removed therefrom, as shown, for example, in Figure 4. The outlet valve 114, on the other hand, is open when the cleaning fluid container 48 is accommodated in the container receptacle 30 as intended, as schematically shown in Figure 7.

[0223] The container outlet 110 is designed to cooperate with a connecting piece 118 arranged on the container receptacle 30. It serves for fluid-tight coupling to the container outlet 110 when the cleaning fluid container 48 is accommodated in the container receptacle 30 as intended, as schematically illustrated in particular in the enlarged view in Figure 9.

[0224] A valve actuating member 120 is arranged on the connecting piece 118 for opening the outlet valve 114 when the cleaning fluid container 48 is accommodated as intended in the container receptacle 30. The valve actuating member 120 is designed in the form of a protruding pin 122, which, with an end 124 pointing toward the cleaning fluid container 48, presses a ball 126 out of a valve seat 128 against the action of a spring 130 when the cleaning fluid container 48 is inserted into the container receptacle 30 and the container outlet 110, which is provided with a recess corresponding to the connecting piece 118, engages with the connecting piece 110. Figure 9 shows the outlet valve 4 in its open position.

[0225] The connecting piece 118 is angled and is fluidly and sealed connected to the conveying device 50, namely its suction side 112, via a connecting line 132.

[0226] The container receptacle 30 is delimited by a rear partition 134 of the rear device carrier section 38. A cleaning fluid container wall 136, which faces toward the rear partition 134 when the cleaning fluid container 48 is inserted into the container receptacle 30, is inclined relative to the rear partition 134 at an angle of inclination 138. In the illustrated embodiment, the angle of inclination 138 has a value in a range from approximately 1° to approximately 5°.

[0227] On the outer side of the rear partition wall 134, several spacers 140 in the form of protruding projections are formed, which, when the cleaning fluid container 48 is inserted, rest against the rear partition wall 134 and are supported thereon. They serve the purpose of pressing a cleaning fluid container wall 142, which points toward the front device support section 36, against a dirt container wall 144 of the dirty water container 18 in the spray extraction working position. The cleaning fluid container wall 142 and the dirt container wall 144 lie flat against one another. The cleaning fluid container 48 thus prevents the dirty water container 18 from shifting toward the rear housing support section 38.

[0228] The cleaning fluid container 48 further comprises a cleaning fluid container securing device 146 for securing the cleaning fluid container lid 102 on the cleaning fluid container 48 in a closed position.

[0229] The cleaning fluid container securing device 146 comprises two locking tabs 148 which are formed protruding from the cleaning fluid container cover 102 and which cooperate with corresponding retaining elements on the cleaning fluid container 48 in order to couple the cleaning fluid container cover 102 to the cleaning fluid container 48 and thus prevent an unintentional detachment of the cleaning fluid container cover 102 from the cleaning fluid container 48.

[0230] The dirty water tank 18 serves to hold a dirty water liquor 150, in particular a liquid dirty water component 152. For this purpose, the dirty water tank 18 comprises a collecting chamber 154. A dirty water tank inlet 156 of the same serves to introduce the dirty water liquor 150 into the dirty water tank 18. It is fluidly connected to the suction port 56. Furthermore, a dirty water outlet 158 ​​is formed on the tank receptacle 30, which is fluidly connected to the suction port 56. In the spray extraction working position, the dirty water outlet 158 ​​is fluidly and fluid-tightly connected to the dirty water tank inlet 156, as can be clearly seen, for example, in Figures 7 and 10.

[0231] The wastewater tank inlet 156 is formed on an inclined portion of a wastewater tank wall 160. The inclined portion forms an angle 162 with the direction of gravity 28, which angle has a value in a range of approximately 2° to approximately 8°. The portion is inclined such that the wastewater tank 18 widens toward a wastewater tank cover 164 that closes the wastewater tank 18.

[0232] A sealing element 166 is arranged or configured at the dirty water outlet 158 ​​to seal the dirty water outlet 158 ​​and the dirty water tank inlet 156 relative to one another.

[0233] The dirty water outlet 158 ​​is connected to the suction connection 56 via a short pipe section 168. The dirty water outlet 158 ​​defines a dirty water outlet longitudinal axis 170 that runs parallel to the device's longitudinal axis 26 and perpendicular to the direction of gravity 28.

[0234] The wastewater tank 18 further comprises an air outlet 172, which is fluidly connected to the suction device 14. An air inlet 174, which is associated with the air outlet 172 and is fluidly connected to the suction device 14, is arranged or formed on the tank receptacle 30. In the spray extraction working position, the air outlet 172 is fluidly and fluid-tightly connected to the air inlet 174. For sealing, a sealing element 176 is arranged or formed on the air inlet 174 to seal the air inlet 174 and the air outlet 172 relative to one another. In the exemplary embodiment illustrated in the figures, the sealing elements 166 and 176 are formed in the form of injection-molded sealing elements made of a thermoplastic elastomer.

[0235] The wastewater outlet 158 ​​and the air inlet 174 are arranged or formed on a side wall 178 of the front equipment carrier section 36, which side wall delimits the container receptacle 30. The air inlet 174 and the air outlet 172 are also formed on sections of the side wall 178 and the wastewater container wall 160, respectively, at an angle 162 relative to the direction of gravity 28.

[0236] The air inlet 174 defines an air inlet longitudinal axis 180. In the exemplary embodiment illustrated in the figures, the dirty water outlet longitudinal axis 170 and the air inlet longitudinal axis 180 run parallel to one another and, during normal operation of the cleaning device 10, also transversely, namely perpendicularly, to the direction of gravity 28.

[0237] The device carrier 12 is designed like a housing. A front housing part is defined by the front device carrier section 36. The suction device 14 is arranged in this section.

[0238] The suction device 14 comprises a fan 182. The fan 182 comprises a fan wheel 184, which is arranged to rotate about a rotational axis 186. During proper operation of the cleaning device 10, the rotational axis 186 runs parallel or substantially parallel to the direction of gravity 28. Thus, the rotational axis 186 is oriented transversely, in particular perpendicularly, to the dirty water outlet longitudinal axis 170 and the air inlet longitudinal axis 180.

[0239] The cleaning device 10 comprises a housing 188, which defines a housing interior 190. A pressure-side suction device outlet 192 of the suction device 14 opens into the housing interior 190, specifically in the region of the front housing support section 36, as schematically illustrated in Figure 14.

[0240] The cleaning device 10 further comprises a switching device 194 for activating and deactivating the suction device 14. The switching device 194 is designed in the form of a rotary switch 196. Alternatively, the switching device can also be designed in the form of a toggle switch.

[0241] The switching device 194 is arranged or formed on the upper side 64 of the cleaning device 10, specifically on the front device carrier section 36.

[0242] The switching device 194 is further configured to activate and deactivate the fluid dispensing device 44, namely to activate and deactivate the conveying device 50.

[0243] In the embodiment shown in the figures, the switching device 194 is also designed to simultaneously activate and deactivate the suction device 14 and the fluid delivery device 44.

[0244] In the manner described, all electrical components required for the operation of the cleaning device 10, namely the suction device 14, the conveying device 50, and the switching device 190, are arranged or formed on the front device support section 36. They are connected to the power supply connection 20 via electrical connecting lines (not shown in the figures) in such a way that both the suction device 14 and the conveying device 50 can be jointly activated or deactivated by actuating the switching device 194.

[0245] The conveying device 50 and the suction device 14 are also dimensioned such that the power consumption of the suction device 14 is at least approximately five times the power consumption of the conveying device 50, in particular at least approximately ten times. In the exemplary embodiment illustrated in the figures, the power consumption of the suction device 14 is approximately 100 watts, and the power consumption of the conveying device 50 is approximately 10 watts.

[0246] To facilitate transport, the cleaning device 10 includes a carrying handle 198. The carrying handle 198 is designed in the form of a U-shaped bracket 200, with two parallel legs 202 and 204, which are arranged on the one hand on the front device support section 36 and on the other hand on the rear device support section 38. The legs 202 and 204 are connected to each other via a straight handle section 206.

[0247] The carrying handle 198 can be pivoted about a handle pivot axis 208 which, during intended operation of the cleaning device 10, runs transversely, namely perpendicularly, to the direction of gravity 28. In Figure 2, the carrying handle 198 is shown such that the handle section 206, in an operating position of the cleaning device 10, completely releases the container receptacle 30 and rests laterally against the central device carrier section 40.

[0248] The handle pivot axis 208 extends in a central plane 210, in which the device's longitudinal axis 26 also extends. Due to the described configuration, the carrying handle 198 can be pivoted from the operating position into a carrying position such that the handle portion 206 is also positioned in the central plane 210 and then engages over the container receptacle 30.

[0249] In the carrying position, the center of gravity 212 of the cleaning device 10 lies below the handle section 206, thus in the center plane 210 or essentially in the center plane 210.

[0250] For separating the liquid dirty water component 152 into the collection container 16, namely the dirty water container 18, and in particular for separating it from a dirty fluid stream 216 comprising the liquid dirty water component 152 and a gaseous dirty water component 434, the cleaning device 10 comprises a separation device 214.

[0251] In the embodiment shown in the figures, the separating device 214 is arranged or formed in the collecting container 16.

[0252] The separation device 214 is arranged or formed in the collecting tank 16 between the dirty water tank inlet 156 and the air outlet 172.

[0253] The collection container 16 comprises a removable collection container lid 218, in the form of the dirty water container lid 164.

[0254] The separation device 214 comprises a separation insert 220, which is inserted into the waste water tank 18 and is closed by the waste water tank cover 164 on an upper side thereof.

[0255] The separation device 214 comprises a first separation stage 222 and a second separation stage 224. The first separation stage 222 is located downstream of the wastewater tank inlet 156. The second separation stage 224 is located downstream of the first separation stage 222.

[0256] The first separation stage 222 comprises a deflection element 226 for deflecting the dirty fluid flow 216 flowing into the dirty water tank 18. The deflection element 226 is designed in the form of a short pipe section angled at 90°, which, during normal operation of the cleaning device 10, defines an outlet 228 which flows in a direction opposite or substantially opposite to the direction of gravity 28. Thus, the dirty fluid flow 216 can be directed opposite to the direction of gravity 28 upon entering the dirty water tank 18. A drip opening 230 is formed at the bottom of the deflection element 226 in the direction of gravity 28 for draining the liquid dirty water component 152 into the collection chamber 154 of the dirty water tank 18.

[0257] The first separation stage 222 comprises a deflection bell 232, open in the direction of gravity and arranged downstream of the deflection element 226, for deflecting the dirty fluid flow 216 in the direction of gravity 28 into the collecting chamber 154 of the dirty water tank 18. The deflection bell 232 defines a cross-section more than twice as large as the outlet of the deflection element 226, so that a flow cross-section expands downstream of the deflection element 226, as can be seen schematically in Figure 7.

[0258] The deflection bell 232 is arranged or formed on the wastewater tank cover 164. If the wastewater tank cover 164 is removed from the wastewater tank 18, the deflection bell 232 is also removed at the same time.

[0259] The first separation stage 222 thus directs the dirty fluid flow 216 in the manner described, initially by 90° in a direction opposite to the direction of gravity 28 and then immediately by a further approximately 180° in a direction parallel to the direction of gravity 28.

[0260] The separator insert 220 separates the collecting chamber 154 from a flow chamber 234 by means of a separator insert base 236. The separator insert base 236 is positioned approximately at the level of the wastewater insert's longitudinal axis 170. Opposite the separator insert base 236 is a cover wall 238 of the wastewater tank cover 164, which closes the flow chamber 234.

[0261] The second separation stage comprises the flow chamber 234 arranged above the collection chamber 154 of the wastewater tank 18. It serves to pass the gaseous dirty water component 434 and comprises a flow chamber inlet 240 and a flow chamber outlet 242. The flow chamber inlet 240 is formed in the separation insert base 236 and has a substantially rectangular shape. The flow chamber outlet 242 is also formed in the separation insert base 236 and has a substantially square shape. The flow chamber inlet 240 fluidly connects the collection chamber 154 and the flow chamber 234. The flow chamber outlet 242 is fluidly connected to the suction device 14.

[0262] The flow chamber inlet 240 is closed with a separating element 244, which is designed to be gas-permeable and liquid-impermeable. The separating element 244 is formed by a fleece 246. As can be clearly seen in Figure 12, the separating element 244 is convexly curved into the flow chamber 234, counter to the direction of gravity 28.

[0263] In the described embodiment, a cross-section of the flow space inlet 240 is larger than a cross-section of the deflection bell 232, so that the gaseous dirty liquor component 434 flows more slowly through the flow space inlet 240 than in the region of the deflection bell 232.

[0264] The flow chamber outlet 242 is open in the direction of gravity 28 and opens into an upper end 248 of a float shaft 250 extending in the direction of gravity 28.

[0265] A lower end 252 of the float shaft 250 is fluidly connected to the collecting chamber 154. At the lower end 252 in the direction of gravity 28, a fluid-permeable filter element 254 is arranged or formed on the float shaft 250. The filter element 254 has the shape of a sieve 256. Thus, the liquid dirty water component 152 can flow through the filter element 254 into the float shaft 250, so that a level of the liquid dirty water component 152 in the collecting chamber 154 and in the float shaft 250 is essentially identical. A floating element 258 is arranged in the float shaft 250 and is designed such that it floats on the liquid dirty water component 152. Depending on the fill level of the liquid dirty water component 152 in the float shaft 250, the floating element 258 then moves upwards or downwards in the float shaft 250, counter to or parallel to the direction of gravity 28.

[0266] An inner contour of the float shaft 250 is essentially rectangular. An outer contour of the floating element 258 is essentially circular. Nevertheless, the inner contour of the float shaft 250 and the outer contour of the floating element 258 are adapted to one another and essentially correspond to one another, as schematically illustrated in Figure 13.

[0267] The floating element 258 is designed in the form of a sleeve 260 closed on one side. An open end 262 of the sleeve 260 points in the direction of gravity 28.

[0268] A float shaft outlet 264 is arranged at the upper end 248 of the float shaft 250. It essentially comprises a stirring piece angled at 90°, which is fluidly connected to the air outlet 172. The float shaft outlet 264 is open in the direction of gravity 28. Its cross-section is smaller than a cross-section of the float shaft 250. Thus, the gaseous dirty water component 434 can flow from the flow chamber 234 through the upper end 248 into the float shaft 252 and, after being deflected by approximately another 180°, exit through the float shaft outlet 264.

[0269] The cleaning device 10 further comprises a flow interruption device 266 for interrupting a suction flow generated by the suction device 14 in an interruption position. The flow interruption device 266 comprises a valve arrangement 268 arranged between the dirty water tank inlet 156 and the air outlet 172. The valve arrangement 268 comprises the floating element 258 and the float shaft outlet 264. In the interruption position, the floating element 258 closes the float shaft outlet 264 when the fill level of the liquid dirty water component 152 in the collection chamber 154 and in the float shaft 250 fluidly connected thereto reaches such a level that a closed end of the sleeve 260 strikes the float shaft outlet 264 and closes it.Thus, the float shaft outlet 264 forms a stop 270 for the floating element 258 during a movement against the direction of gravity 28, wherein the floating element 258 then closes the float shaft outlet 264 in an air outlet position.

[0270] The float shaft 250 comprises an upper shaft section 272 and a lower shaft section 274. The upper shaft section 272 is arranged or formed on the separator insert base 236. The lower shaft section 274 adjoins the upper shaft section 272 in the direction of gravity 28 and extends it to a bottom of the wastewater tank.

[0271] The upper shaft section 272 and the lower shaft section 274 are designed to be detachably connected to one another. In the exemplary embodiment illustrated in the figures, a snap-in connection device 276 is schematically shown for this purpose. By connecting the two shaft sections 272 and 274, the float shaft 250, together with the separator insert 220, can be removed as an assembly from the wastewater tank 18.

[0272] Furthermore, the collection container 16 comprises a collection container securing device 278 for securing the collection container lid 218 to the collection container 16 in a closed position. Two locking tabs 280 arranged on diametrically opposed sides of the collection container lid 218 interact with corresponding locking elements formed or arranged on the collection container 16, so that they engage with one another in the closed position. The closed position is illustrated schematically in Figures 1 to 4.

[0273] The power supply connection 20 of the cleaning device 10 comprises an interface 282 for detachable connection to a battery 284. The interface 282 comprises a battery receptacle 286 for force-fitting and / or positive connection to a battery housing 288 of the battery 284.

[0274] The interface 282 is further configured for electrically conductively connecting electrical components of the cleaning device 10 to battery terminals of the battery 284. In particular, the interface 282 is electrically conductively connected to switching contacts of the switching device 194, so that by corresponding actuation of the switching device 194, an electrical connection is established such that the battery 284 can supply the suction device 14 and the conveying device 50 with power in order to operate them.

[0275] Alternatively or optionally additionally, an alternative embodiment provides that the power supply connection 20 comprises a connection device for connecting the cleaning device 10 to a power grid. In this way, the cleaning device can be supplied with power not only independently of the mains using the battery 284, but also in a mains-dependent manner via a connection cable using power provided by the power grid.

[0276] The battery 284 is detachably connectable to the cleaning device 10. It is also designed in the form of a rechargeable battery 284. This proposed embodiment allows the battery 284, when empty, to be removed from the cleaning device 10 and recharged. To continue cleaning immediately, the depleted battery 284 can then be replaced with another, charged battery 284. The cleaning device 10 described in connection with Figures 1 to 18 is, as mentioned, designed in the form of a spray extraction device 42. So that a user can also quickly and easily clean an object to be cleaned, the cleaning device 10 comprises a suction nozzle 290, which is connected to the first suction hose end 66 or, alternatively, can be detachably connected.

[0277] The suction nozzle 290 and the first suction hose end 66 are rotatable in a connecting region 292 about a connecting region longitudinal axis 294 defined by the connecting region 292.

[0278] The suction nozzle 290 comprises a handpiece 296, which is designed to be non-detachable from the suction hose 258. Furthermore, the suction nozzle 290 comprises a nozzle attachment 298.

[0279] In Figure 20, three nozzle attachments 298 are shown schematically, namely a nozzle attachment 298 in the form of a surface nozzle 300, a nozzle attachment 298 in the form of a crevice nozzle 302 and another nozzle attachment 298 in the form of a further crevice nozzle 304.

[0280] The handpiece 296 is freely rotatably coupled to the first suction hose end 66, which comprises a coupling piece 306. For this purpose, a groove 308 extending in the circumferential direction and pointing away from the connection area's longitudinal axis 294 is formed on the coupling piece 306 in the form of an annular groove, into which—as schematically illustrated in Figures 34 and 35—two guide members in the form of projections 309 engage, which point toward the connection area's longitudinal axis 294 and are formed on an upper grip part 310 of the handpiece 296.

[0281] The upper handle part 310 is essentially sleeve-shaped and has a recess 312 on a lateral region, which is closed with a closure part 314. An opening 316 is formed in the region of the recess 312, through which the first spray hose end 82 is guided. Thus, the first spray hose end 82 protrudes into the handpiece 296. Furthermore, the first spray hose end protrudes beyond the first suction hose end 66.

[0282] The first spray hose end 82 is held non-rotatably on the handpiece 296. This means that when the handpiece 296 rotates, the first spray hose end 82 also rotates about the longitudinal axis 294 of the connection area. However, this causes the entire spray hose 80 to rotate relative to the suction hose 58 inside the suction hose 58. To prevent the spray hose 80 and the suction hose 58 from twisting relative to each other, the second spray hose end 84 is held rotatably on the fluid connection 78, as described above.

[0283] A handpiece suction channel 318 is formed on the upper handle portion 310. The handpiece suction channel 318 defines a first handpiece suction channel end 320 and a second handpiece suction channel end 322. The second handpiece suction channel end 322 is connected to the coupling piece 306, as illustrated by way of example in Figures 20 and 26.

[0284] On the upper handle part 310, in the region of the front end of the handpiece 296, a further opening 324 is arranged, through which a first handpiece spray channel end 326 protrudes. The first spray hose end 82 is connected in a fluid-tight manner to a second handpiece spray channel end 328. The second handpiece spray channel end 328 is designed in the form of a sleeve-shaped connector.

[0285] A handpiece spray channel 330 extends between the first and second handpiece spray channel ends 326 and 328. Furthermore, a valve device 332 is arranged or designed between the first and second handpiece spray channel ends 326 and 328 for opening and closing the handpiece spray channel 330. The valve device 332 comprises an actuating element 334 for actuating the valve device 332. The actuating element 334 is designed in the form of a pivot lever 338 mounted on the handpiece 296, namely on the closure part 314, so as to be pivotable about a pivot axis 336.

[0286] The valve device 332 comprises a valve tappet 340, which opens or closes a valve opening 342 formed in the handpiece spray channel 330, depending on its position. The valve tappet 340 comprises a deflection surface 344 inclined relative to the longitudinal axis 294 of the connecting region, against which a transmission member 348 mounted in a bearing sleeve 346 of the valve device 332 can be displaced in a direction of movement inclined relative to the longitudinal axis 294 of the connecting region. The transmission member is sealed relative to the bearing sleeve 346.

[0287] If the pivot lever 338 is pivoted toward the valve device 332, the transmission member 348 is pressed toward the deflection surface 344, so that a front end 350 of the transmission member 348 slides along the deflection surface 344 and displaces the valve tappet 340 toward the second handpiece spray channel end 328. A prestressing element 352 of the valve device 332 is arranged between the valve tappet 340 and the second handpiece spray channel end 328. The prestressing element 352 is in the form of a compression spring 354. It serves to hold the valve device 332 in a basic position in which the handpiece spray channel 330 is closed. This basic position is shown schematically in Figures 24 and 25. Figure 26 schematically shows an open position of the valve device 332.

[0288] The prestressing element 352 holds the valve stem 340, which forms a valve member 356 of the valve device 332, in a closed position under prestress. As described, the actuating element 334 is designed to cooperate with the valve member 356 to move the valve member 356, counter to the action of the prestressing element 352, from the closed position into the open position deflected from the closed position. The closure part 314 closes the recess 312, which together define a valve receiving space 358 for the valve device 332. The handpiece spray channel 330 thus runs essentially parallel to the handpiece suction channel 318 through the handpiece 296, namely through the valve receiving space 358.

[0289] The handpiece 296 and the nozzle attachments 298 are designed to be detachably connected to one another. This allows the handpiece 296 to be connected to the most suitable nozzle attachment 298, depending on the cleaning task to be performed. For this purpose, the suction nozzle 290 comprises a suction nozzle connection device 360 ​​for force-fitting and / or positive-locking connection of the handpiece 296 and one of the nozzle attachments 298 in a suction nozzle connection position. Such a suction nozzle connection position is illustrated schematically in particular in Figures 22 to 28.

[0290] In the embodiment of the suction nozzle 290 illustrated in the figures, the suction nozzle connecting device 360 ​​is designed in the form of a latching or snap-in connection device 362. The suction nozzle connecting device 360 ​​comprises first and second suction nozzle connecting elements 364 and 366, which are arranged or formed on the one hand on the handpiece 296 and on the other hand on the nozzle attachments 298. The two suction nozzle connecting elements 264 and 266 are engaged in a force-locking and / or positive-locking manner in the suction nozzle connecting position, and in a suction nozzle separating position, as schematically illustrated in Figure 20, they are completely separated from one another.

[0291] The suction nozzle connecting device 360 ​​comprises a connecting piece 368 on the respective nozzle attachment 298, which can be inserted into the first handpiece suction channel end 320 in a defined rotational position. A second connecting member is arranged or formed on the connecting piece 368, specifically in the form of a locking projection 372 formed on a free end of a leaf spring element 370. The free end points toward the handpiece 296. At the first handpiece suction channel end 320, a locking recess 374 is formed on a flexible unlocking member 376, in which the locking projection 372 is received in the suction nozzle connecting position. This can be clearly seen schematically in Figures 24 and 26.

[0292] The release member 376 is formed on the handpiece 296 substantially opposite the actuating element 334. This allows a user to hold the handpiece 296 with one hand and, for example, actuate the actuating element 334 with their middle or index finger. To release the nozzle attachment 298 from the handpiece 296, the user can press the release member 376 with their thumb, causing the leaf spring element 370 to pivot into the handpiece suction channel 318, thus displacing the locking projection 372 from the locking recess 374, allowing the nozzle attachment 298 to be removed from the handpiece 296.

[0293] The nozzle attachments 298 each comprise a nozzle attachment suction channel 378 and a nozzle attachment spray channel 380. The nozzle attachment spray channel 380 comprises a first nozzle attachment spray channel end 382 and a second nozzle attachment spray channel end 384. The nozzle attachment suction channel 378 comprises a first nozzle attachment suction channel end 386 and a second nozzle attachment suction channel end 388.

[0294] The nozzle attachments 298 are designed such that they and the handpiece 296 are sealed relative to one another in the suction nozzle connection position. This is achieved in particular by the second nozzle attachment suction channel end 388 and the first handpiece suction channel end 320 being sealed relative to one another in the suction nozzle connection position. Furthermore, the second nozzle attachment spray channel end 384 and the first handpiece spray channel end 326 are also sealed relative to one another. A spray nozzle 390 is also arranged or formed on the nozzle attachment spray channel 380. Furthermore, a nozzle attachment spray channel outlet 392 is arranged or formed on the first nozzle attachment spray channel end 382. In the crevice nozzle 302, the spray nozzle 390 is arranged or formed between the first nozzle attachment spray channel end 382 and the second nozzle attachment spray channel end 384.In the case of the surface nozzle 300 and the crevice nozzle 304, the spray nozzle 390 forms the nozzle attachment spray channel outlet 392.

[0295] In the surface nozzle 300 and the crevice nozzle 304, the spray nozzle 390 is designed as a separate component and is sealed and attached to the first nozzle attachment spray channel end 382.

[0296] In the surface nozzle 300, the first nozzle attachment suction channel end 386 protrudes beyond the first nozzle attachment spray channel end 382. In the surface nozzle 300, the first nozzle attachment suction channel end 386 is formed in the form of an elongated opening that runs transversely to the longitudinal axis 294 of the connecting area. Furthermore, the nozzle attachment suction channel 378 is angled. In the surface nozzle 300, the spray nozzle 390 is freestanding and covered only on one side by the nozzle attachment suction channel 378.

[0297] In the crevice nozzle 304, the nozzle attachment spray channel 380 extends within the nozzle attachment suction channel 378.

[0298] In the crevice nozzle 302, the spray nozzle 390 is formed in one piece, namely monolithically. Thus, no assembly of the spray nozzle 390 is required, as is required for the surface nozzle 300 and the crevice nozzle 304.

[0299] In the crevice nozzle 302, the spray nozzle 390 is designed in the form of a cross-sectional constriction 394 on the nozzle attachment spray channel 380. Here, the spray nozzle 390 is spaced from the first nozzle attachment spray channel end 382 and thus arranged between the first nozzle attachment spray channel end 382 and the second nozzle attachment spray channel end 384. In the crevice nozzle 302, a nozzle attachment suction channel cross-section of the nozzle attachment suction channel 378 continuously increases from the first nozzle attachment suction channel end 386 to the second nozzle attachment suction channel end 388. Furthermore, in the crevice nozzle 302, a nozzle attachment spray channel cross-section of the nozzle attachment spray channel 380 continuously decreases from the first nozzle attachment spray channel end 382 to the spray nozzle 390 and continuously increases from the spray nozzle 390 to the second nozzle attachment spray channel end 384. This structural design of the crevice nozzle 302 makes it possible to construct it as a single piece, namely monolithic.The crevice nozzle 302 can thus be manufactured as an injection-molded part in a single injection process.

[0300] Furthermore, the second nozzle attachment spray channel end 384 and the first handpiece spray channel end 326 are sealed relative to each other in the suction nozzle connection position.

[0301] Two retaining members 396 are arranged laterally on each of the nozzle attachments 298. They serve to detachably connect the nozzle attachments 298 to the housing 188, specifically in the area of ​​the rear device carrier section 38.

[0302] For coupling the elastically deformable holding members 296, holding member receptacles 398 are formed laterally on the rear device carrier section 38, which can be brought into engagement with the holding members 396 in a force-fitting and / or form-fitting manner. A cross-sectional constriction 400 is formed on each of the holding member receptacles 398, onto which lateral projections 402 of the two holding members 396, pointing away from each other in opposite directions, slide, allowing the paired holding members 396 to pivot slightly toward each other. The holding members 396 spring back into their basic position when the projections 402 engage behind the cross-sectional constriction 400. Figure 17 shows the holding members 316 before being brought into engagement with the holding member receptacle 398. Figure 18 schematically shows the holding members 396 engaged with the holding member receptacle 398.As schematically illustrated in Figure 16, one of the two retaining member receptacles 398 serves to support one of the two nozzle attachments 298, which is connected to the handpiece 296. The additional nozzle attachment 298 in the form of the crevice nozzle 302 can then be securely held and stored on the other side of the rear device carrier section 38 until it is needed and replaced with the surface nozzle 300 on the handpiece 296.

[0303] As described above, the cleaning device 10 forms part of a modular cleaning system 404, designated overall by the reference numeral 204. As schematically illustrated in Figure 42, a spray extraction module 428 comprising the cleaning fluid container 48 and the dirty water container 18 can be optionally inserted into the container receptacle 30 of the cleaning device 10, which forms a module receptacle 440, i.e., into the container receptacle 30 formed on the device carrier 12. In this way, the cleaning device 10 can be used as a spray extraction device 42.

[0304] Alternatively, a suction module 436 can be inserted into the container receptacle 30, which comprises only a single collecting container 16 in the form of a suction container 406, which alone completely or essentially completely fills the container receptacle 30. Such a combination enables the formation of a cleaning device 10 in the form of a suction device 408, for example in the form of a wet / dry vacuum cleaner.

[0305] A further embodiment of the modular cleaning device 10 provides for the formation of a steam cleaning device 410, namely by inserting a steam generation module 412 with a steam generation device 414 and a fluid container 416 into the container receptacle 30. For example, water can be filled into the fluid container 416, which is evaporated by the steam generation device 414, so that hot steam can be released by the cleaning device 10, now as a steam cleaning device 410. The fluid release device described in detail above serves to release the steam. An exemplary embodiment of a cleaning device 10 in the form of a suction device 408 is schematically illustrated in Figures 36 to 41. In the suction device 408, instead of the cleaning fluid container 48 and the dirty water container 18, a single suction container 406 is inserted into the container receptacle 30.

[0306] The collecting container 16 is therefore designed in the form of the suction container 406 in the suction device 408 and is arranged in the container receptacle 30 in a suction working position of the cleaning device 10 - this therefore forms a suction device 408 as described.

[0307] The suction container 406 has a recess 418 formed on its underside, into which the connection piece 118 of the cleaning device 10 engages. Since there is no cleaning fluid container 48 and thus no cleaning fluid 46, the connection piece 118 remains inoperative.

[0308] A suction container inlet 420 and a suction container air outlet 422 are formed on the suction container 406. These are arranged and positioned such that the suction container air outlet 422 is fluidly and fluid-tightly connected to the air inlet 174 on the container receptacle 30. Furthermore, the suction container inlet 420 is fluidly and fluid-tightly connected to the dirty water outlet 158 ​​on the container receptacle 30 in a suction position. In this way, the sucked-up dirty water 150 passes through the suction container inlet 420 into a collection chamber 154 defined by the suction container 406.

[0309] The suction container 406 is closed with the collecting container lid 218. The collecting container securing device 278 with the two locking tabs 280 serves to securely fix the collecting container lid 218 to the collecting container 16, i.e., to the suction container 406. A separation device 214 is also arranged or formed on the suction container 406, which comprises a first separation stage and a second separation stage 224.

[0310] The first separation stage 222 on the suction container 406 also comprises a deflection element 226 in the form of a baffle plate 424 pointing towards the suction container inlet 420 and arranged at a distance therefrom.

[0311] The second separation stage 224 comprises a separation element 426 closing the suction container air outlet 422.

[0312] The separation element 426 comprises a filter 428. It is sleeve-shaped and includes a sleeve wall 430, which has a plurality of large-area openings 432 extending over a circumference of the sleeve wall 430. The filter 428 closes these openings 432. It is designed to retain liquids but allow air to pass through.

[0313] The separation element 426 is arranged directly in front of the suction container air outlet 422 and is concentric with the air inlet longitudinal axis 180. Thus, the separation element 426 extends into the suction container 406 in a direction transverse, namely perpendicular, to the direction of gravity 28.

[0314] The suction container 406, as well as the dirty water container 18 and the cleaning fluid container 48, are dimensioned such that the suction container 406 defines a suction container volume, the dirty water container 18 defines a dirty water container volume, and the cleaning fluid container 48 defines a cleaning fluid container volume, wherein the suction container volume approximately corresponds to the sum of the dirty water container volume and the cleaning fluid container volume. In other words, a suction container volume is available for the suction container 406, which the dirty water container 18 and the cleaning fluid container 48 together define. To ensure that the entire cleaning fluid 46 can be safely absorbed in the dirty water container 18 when the cleaning device 10 is used as a spray extraction device 42, the cleaning fluid container volume corresponds to a maximum of approximately 50% of the dirty water container volume.

[0315] A further special feature of the cleaning device 10, in particular of the cleaning fluid container 48 in conjunction with the crevice nozzle 302, is that the filler opening 104 is dimensioned such that the crevice nozzle 302 can be inserted into the cleaning fluid container 48 through the filler opening 104. Thus, cleaning fluid 46 can be sucked directly through the nozzle attachment suction channel 378 in order to clean not only the handpiece suction channel 318, but also the suction hose 58. If necessary, cleaning fluid 46 can then also be dispensed into the cleaning fluid container 48 through the spray nozzle 390 when the actuating element 334 of the valve device 332 on the handpiece 296 is actuated.

[0316] As already mentioned, the center of gravity 212 of the cleaning device 10 is located in the area of ​​the container receptacle 30, i.e., in particular, in the central device carrier section 40. When the cleaning device 10 is used as a spray extraction device 42, the position of the center of gravity 212 is essentially independent of the intended filling of the collection container 16 and / or the cleaning fluid container 48. If the cleaning fluid 46 is completely dispensed and collected in the collection container 16, the center of gravity 212 moves slightly in the container receptacle 30 toward the front device carrier section 36. Nevertheless, the position of the center of gravity 212 remains below the handle section 206 for optimal handling of the cleaning device 10 in the carrying position, so that a user can lift and carry the cleaning device 10 with great balance.

[0317] The flow path of the cleaning fluid 46 from the cleaning fluid container 48 to the spray nozzle 390 is shown in Figure 4 with the solid lines. The cleaning fluid is conveyed from the cleaning fluid container 48 through the connecting line 132 to the conveying device 50, specifically by the conveying device 50 sucking the cleaning fluid 46 out of the cleaning fluid container 48. From the conveying device 50, the cleaning fluid 46 is conveyed through the connecting line 94 to the fluid connection 78 and then from there through the spray hose 80 to the handpiece 296, so that it can be dispensed through the spray nozzle 390 of the nozzle attachment 298 upon actuation of the valve device 332.

[0318] Conversely, the dirty fluid stream 216, shown in dashed lines in Figure 4, is directed from a surface to be cleaned through the nozzle attachment suction channel 378 and the handpiece suction channel 318 into the suction hose 58. From the suction hose 58, the dirty fluid stream 216 passes through the suction connection 56 into the dirty water tank 18. The liquid dirty water component 152 is separated in the dirty water tank 18 as described, so that the gaseous dirty water component 434 can flow through the two separation stages 222 and 224 of the separation device 214 in the dirty water tank 18 and into the air inlet 174 on the container receptacle 30. From there, the gaseous dirty water component 434 is directed to the suction device 14 through the piping arranged in the front device carrier section 36.

[0319] By sealing the interconnected components, a good suction and thus cleaning result can be achieved even with a low power consumption of the suction device 14.

[0320] List of reference symbols

[0321] cleaning device

[0322] Equipment carrier

[0323] Suction device collection container dirty water container

[0324] Power supply connection device base

[0325] Stand

[0326] Device longitudinal axis

[0327] Gravity direction container holder

[0328] front

[0329] Rear front equipment carrier section rear equipment carrier section middle equipment carrier section spray extraction device fluid dispenser cleaning fluid

[0330] Cleaning fluid container conveyor device

[0331] Pump Diaphragm pump Suction connection Suction hose Recess Total height

[0332] Top first suction hose end second suction hose end Hose coupling locking element

[0333] locking lug

[0334] Recess

[0335] Fluid connection

[0336] Spray hose first spray hose end second spray hose end nipple bracket ring flange ring flange

[0337] connecting line

[0338] Print page

[0339] Fluid connection longitudinal axis

[0340] Reinforcing rib

[0341] Cleaning fluid container lid

[0342] Filling opening

[0343] locking element

[0344] Grip tab

[0345] Container outlet

[0346] suction side

[0347] outlet valve

[0348] ball valve

[0349] connecting piece

[0350] valve actuator

[0351] cones

[0352] End

[0353] Bullet

[0354] valve seat

[0355] Feather

[0356] Connecting cable rear partition

[0357] Cleaning fluid container wall inclination angle

[0358] spacers

[0359] Cleaning fluid container wall

[0360] Wastewater tank wall

[0361] Cleaning fluid container safety device

[0362] locking tab

[0363] Dirt liquor liquid dirt liquor component

[0364] assembly room

[0365] Waste water tank inlet

[0366] Waste water outlet

[0367] Wastewater tank wall

[0368] angle

[0369] Waste water tank cover

[0370] Sealing element

[0371] Pipe section

[0372] Waste water outlet longitudinal axis

[0373] Air outlet

[0374] Air intake

[0375] Sealing element

[0376] side wall

[0377] Air intake longitudinal axis

[0378] fan

[0379] Air wheel

[0380] axis of rotation

[0381] Housing

[0382] Housing interior

[0383] Suction device outlet

[0384] Switching device

[0385] rotary switch

[0386] Carrying handle

[0387] bracket

[0388] thigh thigh

[0389] Handle section

[0390] Handle pivot axis

[0391] Middle level

[0392] Focus

[0393] Separation device

[0394] Dirty fluid flow

[0395] Collection container lid

[0396] Separation insert first separation stage second separation stage

[0397] deflection element

[0398] Outlet

[0399] Drip opening

[0400] Deflection bell

[0401] Flow space

[0402] Floor

[0403] cover wall

[0404] Flow chamber inlet

[0405] Flow chamber outlet

[0406] Separating element

[0407] Fleece upper end

[0408] Float chamber lower end

[0409] filter element

[0410] Sieve

[0411] Floating element

[0412] Sleeve open end

[0413] Float shaft outlet

[0414] Flow interruption device

[0415] Valve arrangement stop upper shaft section lower shaft section

[0416] Snap-in connection device

[0417] Collection container safety device

[0418] locking tab

[0419] interface

[0420] battery

[0421] Battery holder

[0422] Battery case

[0423] suction nozzle

[0424] Connection area

[0425] Connection area longitudinal axis

[0426] Handpiece

[0427] nozzle attachment

[0428] Surface nozzle

[0429] Crevice nozzle

[0430] Crevice nozzle

[0431] coupling piece

[0432] Nut

[0433] Projection upper handle part

[0434] Rebound

[0435] locking part

[0436] opening

[0437] Handpiece suction channel first handpiece suction channel end second handpiece suction channel end

[0438] Opening first handpiece spray channel end second handpiece spray channel end handpiece spray channel

[0439] Valve device Actuating element Swivel axis Swivel lever Valve tappet Valve opening Deflection surface Bearing sleeve

[0440] Transmission link front end preloading element compression spring

[0441] valve element

[0442] Valve accommodation space

[0443] Suction nozzle connection device

[0444] Locking or snap-in connection device first suction nozzle connection element second suction nozzle connection element nozzle

[0445] Leaf spring element

[0446] Locking projection Locking recess Unlocking element Nozzle attachment suction channel Nozzle attachment spray channel First nozzle attachment spray channel end Second nozzle attachment spray channel end First nozzle attachment suction channel end Second nozzle attachment suction channel end

[0447] spray nozzle

[0448] Nozzle attachment spray channel outlet cross-sectional constriction

[0449] Retaining link Retaining link holder Cross-sectional narrowing

[0450] projection

[0451] cleaning system

[0452] Suction container

[0453] Suction device

[0454] steam cleaning device

[0455] Steam generation module

[0456] Steam generating device

[0457] Fluid container

[0458] recess

[0459] Suction tank inlet

[0460] Suction tank air outlet

[0461] baffle plate

[0462] Separation element

[0463] filter

[0464] sleeve wall

[0465] Breakthrough of gaseous dirty water component

[0466] Suction module

[0467] Spray extraction module

[0468] Module recording

Claims

Claims: Suction hose (58) for a cleaning device (10), in particular for a spray extraction device (42), wherein the suction hose (58) comprises a first suction hose end (66) and a second suction hose end (68), wherein the second suction hose end (68) can be fluidly connected to a suction port (56) of the cleaning device (10), wherein the suction hose (58) comprises a spray hose (80) with a first spray hose end (82) and a second spray hose end (84), and wherein the second spray hose end (84) can be fluidly connected to a fluid port (78) of the cleaning device (10), characterized in that the first suction hose end (66) is connected or connectable to a suction nozzle (290), and that the suction nozzle (290) and the first suction hose end (66) are designed to be rotatable relative to each other.Suction hose according to claim 1, characterized in that the suction nozzle (290) and the first suction hose end (66) are rotatable in a connection area (292) about a longitudinal axis (294) of the connection area defined by the connection area (292). Suction hose according to any of the preceding claims, characterized in that the spray hose (80) a) is surrounded by the suction hose (58) and / or b) is formed separately from the suction hose (58) and that the spray hose (80) and the suction hose (58) are arranged or formed to be rotatable relative to each other. Suction hose according to one of the preceding claims, characterized in that the suction nozzle (290) comprises a handpiece (296) and at least one nozzle attachment (298), and that the handpiece (296) and the suction hose are rotatable relative to each other. Suction hose according to claim 4, characterized in that the handpiece (296) and the at least one nozzle attachment (298) are detachably connectable to each other.Suction hose according to claim 4 or 5, characterized in that the suction nozzle (290) comprises a suction nozzle connection device (360) for force-fit and / or form-fit connection of the handpiece (296) and the at least one nozzle attachment (298) in a suction nozzle connection position, wherein in particular the suction nozzle connection device (360) a) is designed in the form of a snap-fit ​​or latching connection device (362) and / or b) comprises first and second suction nozzle connection elements (364, 366) which are arranged or formed on the one handpiece (296) and on the other hand on the at least one nozzle attachment (298) and that the first and second suction nozzle connection elements (364, 366) are force-fit and / or form-fit in the suction nozzle connection position and are completely separated from each other in a suction nozzle separation position.Suction hose according to any one of claims 4 to 6, characterized in that the at least one nozzle attachment (298) comprises a nozzle attachment suction channel (378) and a nozzle attachment spray channel (380). Suction hose according to claim 7, characterized in that the nozzle attachment spray channel (380) is located within the nozzle attachment suction channel. (378) arranged or formed or is surrounded by the nozzle attachment suction channel (378). Suction hose according to claim 7 or 8, characterized in that the nozzle attachment spray channel (380) comprises a first nozzle attachment spray channel end (382) and a second nozzle attachment spray channel end (384) and that a nozzle attachment spray channel outlet (392) is arranged or formed at the first nozzle attachment spray channel end (382). Suction hose according to any one of claims 7 to 9, characterized in that a spray nozzle (390) is arranged or formed at the nozzle attachment spray channel (380). Suction hose according to claim 10, characterized in that the spray nozzle (390) a) is arranged or formed between the first nozzle attachment spray channel end (382) and the second nozzle attachment spray channel end (384) or b) forms the nozzle attachment spray channel outlet (392).Suction hose according to claim 10 or 11, characterized in that the spray nozzle (390) a) is integrally formed, in particular monolithically, on the nozzle attachment (298) and / or b) is formed in the form of a cross-sectional constriction (394) on the nozzle attachment spray channel (380), in particular on the first nozzle attachment spray channel end (382). Suction hose according to any one of claims 7 to 12, characterized in that the nozzle attachment suction channel (378) has a first nozzle attachment suction channel end (386) and a second nozzle attachment suction channel end (388). comprising and in which a nozzle attachment suction channel cross-section of the nozzle attachment suction channel (378) increases continuously from the first nozzle attachment suction channel end (386) to the second nozzle attachment suction channel end (388). Suction hose according to one of claims 9 to 13, characterized in that a nozzle attachment spray channel cross-section of the nozzle attachment spray channel (380) decreases continuously from the first nozzle attachment spray channel end (382) to the spray nozzle (390) and increases continuously from the spray nozzle (390) to the second nozzle attachment spray channel end (384). Suction hose according to one of claims 4 to 14, characterized in that the at least one nozzle attachment is designed in the form of a nozzle attachment according to one of claims 24 to 33.Suction hose according to any one of claims 4 to 15, characterized in that the first spray hose end (82) a) projects into the handpiece (296) and protrudes beyond the first suction hose end (66) and / or b) is held non-rotatably on the handpiece (296). Suction hose according to any one of claims 4 to 16, characterized in that the handpiece (296) comprises a handpiece spray channel (330), that the handpiece spray channel (330) comprises a first handpiece spray channel end (326) and a second handpiece spray channel end (328), and that a valve device (332) is arranged or formed between the first handpiece spray channel end (326) and the second handpiece spray channel end (328) for opening and closing the handpiece spray channel (330). Suction hose according to claim 17, characterized in that the valve assembly (332) comprises an actuating element (334) for actuating the valve assembly (332), wherein, in particular, the actuating element (334) is designed in the form of a pivot lever (338) pivotably mounted on the handpiece (296). Suction hose according to claim 17 or 18, characterized in that the valve assembly (332) comprises a pre-tensioning element (352), in particular in the form of a compression spring (354), for holding the valve assembly (332) in a home position in which the handpiece spray channel (330) is closed.Suction hose according to claim 19, characterized in that the pre-tensioning element (352) holds a valve member (356) of the valve assembly (332) in a closed position under pre-tension, wherein, in particular, the confirming element (334) is designed to interact with the valve member (356) to move the valve member (356) against the action of the pre-tensioning element (352) from the closed position to an open position deflected from the closed position. Suction hose according to any one of claims 17 to 20, characterized in that the second nozzle attachment spray channel end (384) and the first handpiece spray channel end (326) are sealed relative to each other in the suction nozzle connection position.Suction hose according to one of claims 13 to 21, characterized in that the handpiece (296) comprises a handpiece suction channel (318), that the handpiece suction channel (318) comprises a first handpiece suction channel end (320) and a second handpiece suction channel end (322), and that the second nozzle attachment suction channel end (388) and the first handpiece suction channel end (320) are sealed relative to each other in the suction nozzle connection position. Suction hose according to any one of claims 6 to 22, characterized in that the at least one nozzle attachment (298) and the handpiece (296) are sealed relative to each other in the suction nozzle connection position. Nozzle attachment (298) for a suction nozzle of a cleaning device (10), in particular for a spray extraction device (42), which suction nozzle (290) comprises a handpiece (296) and the nozzle attachment (298), characterized in that the nozzle attachment (298) is formed in one piece, in particular monolithically. Nozzle attachment according to claim 24, characterized in that the nozzle attachment (298) comprises a nozzle attachment suction channel (378) and a nozzle attachment spray channel (380). Nozzle attachment according to claim 25, characterized in that the nozzle attachment spray channel (380) is arranged or formed within the nozzle attachment suction channel (378) or is surrounded by the nozzle attachment suction channel (378).A nozzle attachment according to claim 25 or 26, characterized in that the nozzle attachment spray channel (380) comprises a first nozzle attachment spray channel end (382) and a second nozzle attachment spray channel end (384), and that a nozzle attachment spray channel outlet (392) is arranged or formed at the first nozzle attachment spray channel end (382). A nozzle attachment according to any one of claims 25 to 27, characterized in that a spray nozzle (390) is arranged or formed at the nozzle attachment spray channel (380). A nozzle attachment according to claim 28, characterized in that the spray nozzle (390) a) is arranged or formed between the first nozzle attachment spray channel end (382) and the second nozzle attachment spray channel end (384), or b) forms the nozzle attachment spray channel outlet (392). Nozzle attachment according to claim 28 or 29, characterized in that the spray nozzle (390) is integrally, in particular monolithically, formed on the nozzle attachment (298). Nozzle attachment according to any one of claims 28 to 30, characterized in that the spray nozzle (390) is formed in the form of a cross-sectional constriction (394) on the nozzle attachment spray channel (380), in particular on the first nozzle attachment spray channel end (382).A nozzle attachment according to any one of claims 25 to 31, characterized in that the nozzle attachment suction channel (378) comprises a first nozzle attachment suction channel end (386) and a second nozzle attachment suction channel end (388), and that the cross-sectional area of ​​the nozzle attachment suction channel (378) increases continuously from the first nozzle attachment suction channel end (386) to the second nozzle attachment suction channel end (388). A nozzle attachment according to any one of claims 27 to 32, characterized in that the cross-sectional area of ​​the nozzle attachment spray channel (380) decreases continuously from the first nozzle attachment spray channel end (382) to the spray nozzle (390) and increases continuously from the spray nozzle (390) to the second nozzle attachment spray channel end (384). Cleaning device (10), in particular in the form of a portable cleaning device (10), comprising a suction device (14), at least one suction port (56) which is fluidly connected to the suction device (14). a cleaning device according to claim 34, characterized in that a second suction hose end (68) of the suction hose (58) is connected to or detachably connectable to the suction port (56). A cleaning device according to claim 34 or 35, characterized in that the cleaning device (10) comprises a fluid dispensing device (44) for dispensing a cleaning fluid (46).Cleaning device according to claim 36, characterized in that the fluid dispensing device (44) comprises the spray hose (80) and that the spray hose (80) comprises a first spray hose end (82) and a second spray hose end (84), wherein in particular the fluid dispensing device (44) comprises a conveying device (50) and that the second spray hose end (84) is fluidly connected to the conveying device (50). Cleaning device according to claim 37, characterized in that the cleaning device (10) comprises a fluid connection (78) and that the second spray hose end (84) is fluidly connected to the fluid connection (78), in particular in a fluid-tight manner, wherein in particular the fluid connection (78) is a) surrounded by the suction connection (56) and / or b) fluidly connected to the conveying device (50), in particular to a pressure side (96) thereof. Cleaning device according to claim 38, characterized in that the second spray hose end (84) is rotatably held on the cleaning device (10), in particular rotatably held relative to the fluid connection (78) about a fluid connection longitudinal axis (98) defined by the latter. Cleaning device according to any one of claims 34 to 39, characterized in that the cleaning device (10) is designed in the form of a spray extraction device (42).

Images