DE102019219312A1 - Suction device, in particular vacuum cleaner - Google Patents

Abstract

The invention is based on a suction device, in particular a vacuum cleaner, with at least one drive unit (12a; 12b; 12c; 12d) for generating a suction flow, with at least one housing unit (14a; 14b; 14c; 14d) which has at least one suction opening ( 16a; 16b; 16c; 16d) which is provided in at least one operating state of the drive unit (12a; 12b; 12c; 12d) for drawing in, in particular contaminated, ambient air by means of the suction flow, and with at least one in the housing unit (14a ; 14b; 14c; 14d) arranged dust collecting container (18a; 18b; 18c; 18d) for receiving dirt separated from the suction flow.
It is proposed that the housing unit (14a; 14b; 14c; 14d) forms at least one dirt opening (20a; 20b; 20c; 20d) which is different from the suction opening (16a; 16b; 16c; 16d) and which closes in the at least one operating state a filling of the dust collecting container (18a; 18b; 18c; 18d) is provided.

Description

State of the art

There are already suction devices, in particular vacuum cleaners, with at least one drive unit for generating a suction flow, with at least one housing unit which forms at least one suction opening which, in at least one operating state of the drive unit, is provided for drawing in, in particular contaminated, ambient air by means of the suction flow , and with at least one dust collecting container arranged in the housing unit for receiving dirt separated from the suction flow.

Disclosure of the invention

The invention is based on a suction device, in particular a vacuum cleaner, with at least one drive unit for generating a suction flow, with at least one housing unit which forms at least one suction opening which, in at least one operating state of the drive unit, is used to suck in, in particular contaminated, ambient air is provided by means of the suction flow, and with at least one dust collecting container arranged in the housing unit for receiving dirt separated from the suction flow.

It is proposed that the housing unit forms at least one dirt opening which is different from the suction opening and which is provided in the at least one operating state for filling the dust collecting container. Preferably, the dirt opening different from the suction opening can be filled independently of the suction opening, wherein in particular the suction opening and the dirt opening can be used at the same time. The suction opening and the dirt opening can preferably be used simultaneously for different purposes, in particular by different people.

The inventive design of the suction device can in particular provide a suction device that can advantageously be used flexibly. The suction device can in particular be used by several people at the same time. In addition to the normal suction via the suction opening, an additional filling of the dust collector can be achieved in particular. When cleaning dust, for example after working with a power tool for woodworking in a workshop or at a customer, larger areas are often cleaned with a suction device, in particular with a vacuum cleaner, particularly preferably an industrial vacuum cleaner, but subtleties and angled corners often have to be cleaned for example, can be cleaned with a hand broom and a hand shovel. The dirt opening in particular can be used to dispose of the waste on the hand shovel. Often, after the work is done, several people clean up at the same time, one person with the suction device and one with a shovel and a broom, for example, whereby the shovel can be emptied through the dirt opening.

A “suction device” is to be understood in this context in particular as a device by means of which an air-dirt mixture is sucked off, in particular by means of a negative pressure, the dirt being separated out in particular within the suction device, in particular filtered out via a filter unit. Polluted air is preferably sucked in, filtered and blown out again via the device. The drive unit of the suction device is provided for generating a suction flow. In particular, the drive unit is provided for generating a negative pressure required for suction. Various configurations of the drive unit that appear sensible to a person skilled in the art are conceivable. The drive unit can be designed as a turbine, for example.

The housing unit is designed in particular to be mobile. In particular, the suction device has wheels which are arranged on the housing unit and are provided for simple displacement of the housing unit. The housing unit is provided in particular to accommodate and / or protect essential components of the suction device, such as in particular the drive unit and / or the dust collector. Preferably, the housing unit can in particular consist of a plurality of housing parts. The housing parts are in particular formed by housing shells that can be separated from one another. The housing unit preferably has at least one first housing part that receives the dust collecting container. The first housing part preferably forms the dust collecting container. The first housing part is in particular formed in one piece with the dust collecting container. However, it would also be conceivable for a separate dust collecting container to be arranged in the housing part. “In one piece” is to be understood in particular as materially bonded, such as by a welding process and / or adhesive process, etc., and particularly advantageously molded, such as by production from a cast and / or by production in a single or multi-component injection molding process. The housing unit preferably has at least one second housing part accommodating the drive unit. The second housing part is in particular for detachable fastening on the first housing part intended. Furthermore, the suction opening is formed in particular by a hose connection. The suction opening is preferably formed in particular by a hose connection piece for coupling to a suction hose. In principle, it would also be conceivable for the suction opening to be firmly connected to a suction hose. Furthermore, a “dust collecting container” in this context is to be understood in particular as a container which is provided for receiving a dirt separated from a suctioned air, in particular by a filter of a filter unit. It is preferably to be understood as a container which is provided in a company to receive dust for subsequent removal from the suction device and preferably subsequent disposal. It can be picked up both directly and indirectly, for example via a bag placed in the dust collector. However, they are preferably picked up directly, in particular without a bag. The dust collecting container is preferably designed to be at least partially separable, in particular via the housing unit, at least from the drive unit. In this way, easy emptying can preferably be made possible. The dust collector is preferably integrated into the housing unit. The fact that the dust collector is “integrated into the housing unit” is to be understood in this context in particular as the fact that the dust collector is at least partially enclosed by the housing unit in at least one state and / or is at least partially formed by the housing unit. The dust collecting container preferably forms at least part of an outer skin of the housing unit, in particular the suction device.

In this context, a “dirt opening” is to be understood in particular as an opening which is different from the suction opening and which is coupled to the dust collecting container in at least one operating state. The dust collecting container can preferably be filled in the at least one operating state via the dirt opening, wherein filling can take place directly, in particular by pouring dirt directly into the dust collecting container, as well as indirectly, in particular by sucking and / or sucking dirt from the dirt opening into the dust collecting container by conveying dirt into the dust collecting container via an intermediate collecting container, such as in particular a flap and / or a drawer. The dirt opening is preferably provided in particular for direct filling with dirt, in particular free of an additional suction hose. The dirt opening is preferably free of a connection piece for a suction hose. The dirt opening preferably serves in particular to enable an operator to empty waste and / or dust into the dust collecting container without using the suction opening. “Provided” is to be understood in particular as specifically designed and / or equipped. The fact that an object is provided for a specific function is to be understood in particular to mean that the object fulfills and / or executes this specific function in at least one application and / or operating state.

It is further proposed that the at least one dirt opening is at least partially coupled to the intake flow for drawing in, in particular contaminated, ambient air. Active suction at the dirt opening preferably takes place at the dirt opening in at least one operating state. The dirt opening is preferably coupled to the intake flow in at least one operating state. In at least one operating state, the suction device is preferably provided to suck in dirt in the vicinity of the dirt opening by means of the suction flow. For example, it would be conceivable that the suction flow can be coupled to the dirt opening by an operator, for example by means of a switch, and / or that a coupling takes place automatically, for example when the dirt opening is opened or closed. As a result, a suction device that can advantageously be used flexibly can in particular be provided. In addition to the normal suction via the suction opening, additional suction can be achieved in particular. The dirt opening in particular can be used to dispose of dirt, for example from a hand shovel. In particular, spillage can be reliably avoided. In particular, the blade can be sucked empty.

In addition to active suction at the dirt opening, it would also be conceivable that the dirt can be brought into the dust collection container directly or via an intermediate receiving area free of active suction.

It is also proposed that a cross-sectional area of the dirt opening is significantly larger than a cross-sectional area of the suction opening. Preferably, a cross-sectional area of the dirt opening is in particular at least twice, preferably at least 3 times and particularly preferably at least 5 times larger than a cross-sectional area of the suction opening. The suction opening preferably has a cross-sectional area of a maximum of 80 cm ² , preferably a maximum of 65 cm ² and particularly preferably a maximum of 50 cm ² . The dirt opening preferably has a cross-sectional area of at least 100 cm ² , preferably of at least 130 cm ² and particularly preferably of at least 160 cm ² . The The cross-sectional area of the dirt opening is in particular bounded directly by the housing unit. In particular, the cross-sectional area of the dirt opening is preferably at least approximately rectangular. The cross-sectional area of the suction opening is in particular bounded directly by the housing unit. The cross-sectional area of the suction opening is preferably at least approximately circular. As a result, a suction device that can advantageously be used flexibly can in particular be provided. In addition to the normal suction via the suction opening, an additional suction, in particular of larger dirt, can be achieved in particular. When working with power tools, small residues of the workpiece can also accumulate in addition to dust. These can quickly become too big for the suction opening of the suction device or on the suction accessories and would have to be swept up with the hand broom and hand shovel. Corresponding residues can be sucked off into the dust collection container, in particular via the dirt opening.

It is further proposed that the suction device has at least one filter unit which is arranged along the suction flow behind the suction opening and behind the dirt opening in terms of flow and is provided to separate dirt from the suction flow. In terms of flow, the filter unit is preferably arranged in front of the drive unit and behind the dust collecting container. The filter unit preferably has at least one filter which is provided in an operation for filtering air that is sucked out. If a bag is provided in the dust collecting container, it would also be conceivable for the filter to be designed as a filter bag, which at the same time serves as a dust bag. In this context, a “filter unit” is to be understood as meaning, in particular, a unit which is provided in an operation for filtering extracted air. For this purpose, the filter unit preferably has a filter through which the air is sucked through. Various filters that appear useful to a person skilled in the art are conceivable. The filter is preferably designed as a lamella filter, in particular as a rectangular lamella filter. In this way, in particular, an advantageous suction device can be provided. In particular, it can be achieved that both a suction flow of the suction opening and the dirt opening are filtered.

It is further proposed that the suction device has at least one closing unit, which is provided for an optional opening and closing of the dirt opening. The dirt opening can preferably be made accessible and / or the dirt opening can be closed by means of the closing unit. The closing unit preferably has at least two operating positions, in particular an open position and a closed position. In a closed position, the closing unit preferably prevents dirt from getting through the dirt opening. In a closed state, the closing unit can preferably also be used to prevent dirt from escaping from the dust collecting container to the outside. In this context, a “closing unit” is to be understood in particular as a unit which is provided for optionally closing the dirt opening. In a closed position, the unit is preferably provided to cover the dirt opening from the inside or outside and / or to materially fill the dirt opening. The closing unit can in particular be opened either manually, partially automatically or automatically. The closing unit is preferably provided to be moved manually from a closed position to an open position. In particular, the closing unit is also provided to be brought manually from an open position to a closed position. However, it would also be conceivable for the locking unit to be opened and / or closed automatically. Various configurations of the locking unit that appear sensible to a person skilled in the art are conceivable, for example it would be conceivable that the locking unit has at least one slide, at least one flap and / or at least one drawer. As a result, the dirt opening can particularly advantageously be closed. In particular, an unwanted leakage of dirt from the dirt opening can be avoided. Furthermore, a permanent loss of suction power at the dirt opening can also be avoided.

So that little dirt goes wrong during filling and to ensure that the dirt can be filled in more easily and to keep the installation space of the locking unit as small as possible, it would be conceivable for the locking unit to be designed to be foldable. For example, it would be conceivable that the flap and / or drawer of the locking unit folds open when it is opened, thereby enlarging the area and thereby changing its shape. In the case of a drawer, it would be conceivable, for example, for the drawer to be designed telescopically or to have the shape of a fan that is curved in the manner of a bowl. In the case of a flap, it would be conceivable, for example, that the flap is designed in the form of a funnel.

It is further proposed that the suction device has at least one sensor unit for detecting a closed position of the at least one closing unit. The sensor unit preferably has at least one contact sensor which, in a closed position, is contacted by the at least one closing unit, in particular by the closing unit. Under a "sensor unit" in In this context, in particular, a unit is understood which has at least one sensor which is provided to record at least one parameter and / or a physical property, the recording being active, such as in particular by generating and transmitting an electrical measurement signal, and / or passively, as can take place in particular through the detection of changes in properties of a sensor component. Various sensor units that appear useful to a person skilled in the art are conceivable. As a result, a position of the clamping unit in particular can be monitored. In particular, it can be detected when the clamping unit is opened by an operator. In this way, in particular, a needs-based suction can be provided at the dirt opening.

It is further proposed that the suction device has at least one actuator which is provided to couple or decouple the at least one dirt opening and / or the at least one suction opening with the suction flow depending on a closed position of the at least one closing unit. A separate suction channel is preferably provided between the dirt opening and the dust collecting container, the actuator being provided in particular for opening and / or closing the suction channel and / or the suction opening. The actuator can be designed mechanically, mechatronically or electrically. It would be conceivable that the actuator is mechanically coupled to the closing unit and is automatically actuated as a function of a closed position. The actuator is in particular formed by a normally open contact or changeover switch. The actuator is in particular formed by a mechatronic component which is provided to convert electrical signals into a movement, in particular into a rotary, pivoting and / or linear movement. The actuator is preferably formed by a valve. In a closed state of the closing unit, the actuator is preferably provided to close the suction channel. Alternatively or additionally, however, it would also be conceivable that the actuator is provided to keep or open the suction channel at least temporarily after the closing unit has been closed. In particular, a suction flow at the dirt opening can thereby be influenced. In particular, it can be detected when the clamping unit is opened by an operator. In this way, in particular, a needs-based suction can be provided at the dirt opening. Furthermore, it can be avoided in particular that when the closing unit is opened, the pressure drop causes dirt to escape from the dust collecting container via the dirt opening.

It is also proposed that the suction device has at least one control and / or regulating unit which, in at least one operating state, in particular when an operator actuates an operating element, is provided to automatically open the closing unit and to open the at least one dirt opening with the To couple suction flow. The suction device preferably has at least one operating unit with the at least one operating element. The operating unit is used in particular to control the suction device. The control and / or regulating unit can preferably also be provided for controlling the actuator. The control and / or regulating unit is provided in particular to automatically open the closing unit in at least one operating state, in particular when an operator actuates an operating element, and to couple the at least one dirt opening to the intake flow via the actuator. The locking unit can in particular open in a partially automated manner. For example, it is conceivable that the operator actuates the control element, such as a foot switch with his foot, and thereby opens the closing unit by means of an actuator and either closes it again after a defined time or as soon as the control element is released. It would also be conceivable that the operator, for example, performs a kicking movement with his foot to open the locking unit, as is known, for example, in automobiles for automatic trunk opening. A “control and / or regulating unit” is to be understood as meaning, in particular, a unit with at least one control electronics. “Control electronics” should be understood to mean, in particular, a unit with a processor unit and with a memory unit and with an operating program stored in the memory unit. An “operating unit” is to be understood here in particular as a unit which has at least one component, in particular an operating element, which can be actuated directly by an operator and which is intended to initiate a process by actuation and / or by entering parameters and / or to influence and / or change a state of a unit coupled to the operating unit. An “operating element” is to be understood in particular as an element of the operating unit that is provided to receive an input variable from an operator during an operating process and, in particular, to be contacted directly by an operator Operating element exerted actuating force is sensed and / or mechanically forwarded to actuate a unit. In this way it can be achieved in particular that the clamping unit does not have to be opened manually by an operator. In particular, an advantageously high level of operating convenience can be provided.

Alternatively or in addition, it would also be conceivable that the locking unit opens fully automatically. In particular, it would be conceivable that as soon as the suction device detects an approach to the closing unit by means of a sensor unit, the closing unit is opened automatically and the closing unit is closed again either after a defined time or as soon as a distance from the closing unit is noticed. The closing unit can be opened either by an electrical actuator or by the negative pressure generated by the drive unit. It would be conceivable, for example, that the negative pressure attracts a piston, in particular a spring-loaded piston, which opens and closes the closing unit. To close the vacuum, the direction of the vacuum must be switched in the same way as the filter cleaning, so that the clamping unit is attracted by the vacuum and thus opens inwards.

It is further proposed that the at least one closing unit has at least one slide guided on the housing unit for optional opening and closing of the dirt opening. The slide is preferably guided directly on the housing unit. The housing unit preferably has, in particular, at least one guide rail in which the slide is guided. In a closed position of the closing unit, the slide is preferably provided to cover the dirt opening from the inside and / or outside. The slide is arranged in particular on a side wall of the housing unit. In this way, in particular, a particularly advantageous locking unit can be provided.

It is further proposed that the at least one closing unit has at least one flap pivotably mounted on the housing unit for optional opening and closing of the dirt opening. The flap is preferably mounted pivotably on the housing unit via a swivel joint. In a closed position of the closing unit, the flap is preferably provided to cover the dirt opening from the outside. The flap is arranged in particular on a side wall or on an upper side of the housing unit. In particular, it would be conceivable that an intermediate collecting container is also arranged on the flap, in which the dirt is collected before it is sucked into the dust collecting container with the suction flow. The intermediate collecting container can in particular be arranged in a fixed manner on an inside of the flap. In particular, the intermediate collecting container with the flap can be at least partially folded out of the housing unit. In this way, in particular, a particularly advantageous locking unit can be provided.

It is further proposed that the at least one closing unit have at least one drawer guided in the housing unit for optional opening and closing of the dirt opening. The drawer preferably has at least one drawer front and in particular delimits a receiving area. The drawer has the receiving area. The drawer is preferably guided on the housing in particular via at least one pull-out rail. In a closed position of the closing unit, the drawer front of the drawer is preferably provided to fill the dirt opening and / or to cover the dirt opening from the outside. The drawer is guided in particular in a side wall of the housing unit. The receiving area delimited by the drawer is provided in particular to temporarily receive dirt before it is sucked into the dust collecting container with the suction flow. An operator can preferably pour dirt directly into the receiving area delimited by the drawer. The receiving area of the drawer can, in particular, be at least partially pulled out of the housing unit via the drawer. In this way, in particular, a particularly advantageous locking unit can be provided.

It is further proposed that the suction device has at least one actuator which is provided to couple the suction flow to a receiving area of the drawer when the closing unit is in a closed state. A separate suction channel is preferably provided between the receiving area of the drawer and the dust collecting container, the actuator being provided in particular for opening and / or closing the suction channel. The actuator is preferably formed by a valve, in particular an electrically controlled valve. The actuator is preferably provided to keep the suction channel open or to open it at least temporarily after the closing unit has been closed. As a result, the receiving area of the drawer can in particular be subsequently sucked out. In this way, in particular, a needs-based suction can be provided at the dirt opening. Furthermore, it can be avoided in particular that when the closing unit is opened, the drop in pressure causes dirt to escape from the dust collecting container via the dirt opening. In particular, a loss of suction power at the suction opening when the drawer is being filled can be avoided.

The suction device according to the invention should not be limited to the application and embodiment described above. In particular, the suction device according to the invention can be used to fulfill one of the functions described herein Functionality have a number of individual elements, components and units that differs from a number mentioned herein. In addition, in the case of the value ranges specified in this disclosure, values lying within the stated limits should also be deemed disclosed and can be used in any way.

Figure list

Further advantages emerge from the following description of the drawings. Four exemplary embodiments of the invention are shown in the drawing. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.

• 1 eine erfindungsgemäße Saugvorrichtung mit einer Gehäuseeinheit, welche eine Ansaugöffnung ausbildet, und mit einer Schließeinheit in einer geschlossenen Stellung in einer schematischen Darstellung,
• 2 die erfindungsgemäße Saugvorrichtung mit der Gehäuseeinheit, welche die Ansaugöffnung ausbildet, und mit der Schließeinheit in einer offenen Stellung in einer schematischen Darstellung,
• 3 die erfindungsgemäße Saugvorrichtung mit der Gehäuseeinheit, welche die Ansaugöffnung ausbildet, und mit der Schließeinheit in einer geschlossenen Stellung in einer schematischen Schnittdarstellung,
• 4 eine alternative erfindungsgemäße Saugvorrichtung mit einer Gehäuseeinheit, welche eine Ansaugöffnung ausbildet, und mit einer Schließeinheit in einer geschlossenen Stellung in einer schematischen Darstellung,
• 5 die alternative erfindungsgemäße Saugvorrichtung mit der Gehäuseeinheit, welche die Ansaugöffnung ausbildet, und mit der Schließeinheit während eines Öffnungsvorgangs in einer schematischen Darstellung,
• 6 die alternative erfindungsgemäße Saugvorrichtung mit der Gehäuseeinheit, welche die Ansaugöffnung ausbildet, und mit der Schließeinheit in einer offenen Stellung in einer schematischen Darstellung,
• 7 eine schematische Darstellung der Anordnung der Bauteile der alternativen erfindungsgemäßen Saugvorrichtung entlang eines Ansaugstroms,
• 8 eine weitere alternative erfindungsgemäße Saugvorrichtung mit einer Gehäuseeinheit, welche eine Ansaugöffnung ausbildet, und mit einer Schließeinheit in einer geschlossenen Stellung in einer schematischen Darstellung,
• 9 die weitere alternative erfindungsgemäße Saugvorrichtung mit der Gehäuseeinheit, welche die Ansaugöffnung ausbildet, und mit der Schließeinheit in einer offenen Stellung in einer schematischen Darstellung,
• 10 eine schematische Darstellung der Anordnung der Bauteile der weiteren alternativen erfindungsgemäßen Saugvorrichtung entlang eines Ansaugstroms,
• 11 eine weitere alternative erfindungsgemäße Saugvorrichtung mit einer Gehäuseeinheit, welche eine Ansaugöffnung ausbildet, und mit einer Schließeinheit in einer geschlossenen Stellung in einer schematischen Darstellung,
• 12 die weitere alternative erfindungsgemäße Saugvorrichtung mit der Gehäuseeinheit, welche die Ansaugöffnung ausbildet, und mit der Schließeinheit in einer offenen Stellung in einer schematischen Darstellung und
• 13 die weitere alternative erfindungsgemäße Saugvorrichtung mit der Gehäuseeinheit, welche die Ansaugöffnung ausbildet, und mit der Schließeinheit in einer geschlossenen Stellung in einer schematischen Schnittdarstellung.

Show it:

• 1 a suction device according to the invention with a housing unit, which forms a suction opening, and with a closing unit in a closed position in a schematic representation,
• 2 the suction device according to the invention with the housing unit, which forms the suction opening, and with the closing unit in an open position in a schematic representation,
• 3 the suction device according to the invention with the housing unit, which forms the suction opening, and with the closing unit in a closed position in a schematic sectional view,
• 4th an alternative suction device according to the invention with a housing unit, which forms a suction opening, and with a closing unit in a closed position in a schematic representation,
• 5 the alternative suction device according to the invention with the housing unit, which forms the suction opening, and with the closing unit during an opening process in a schematic representation,
• 6th the alternative suction device according to the invention with the housing unit, which forms the suction opening, and with the closing unit in an open position in a schematic representation,
• 7th a schematic representation of the arrangement of the components of the alternative suction device according to the invention along a suction flow,
• 8th a further alternative suction device according to the invention with a housing unit which forms a suction opening and with a closing unit in a closed position in a schematic representation,
• 9 the further alternative suction device according to the invention with the housing unit, which forms the suction opening, and with the closing unit in an open position in a schematic representation,
• 10 a schematic representation of the arrangement of the components of the further alternative suction device according to the invention along an intake flow,
• 11 a further alternative suction device according to the invention with a housing unit which forms a suction opening and with a closing unit in a closed position in a schematic representation,
• 12th the further alternative suction device according to the invention with the housing unit, which forms the suction opening, and with the closing unit in an open position in a schematic representation and
• 13th the further alternative suction device according to the invention with the housing unit, which forms the suction opening, and with the closing unit in a closed position in a schematic sectional view.

Description of the exemplary embodiments

1 shows a suction device 10a . The suction device 10a is formed by a vacuum cleaner. The suction device 10a is formed by an industrial vacuum cleaner. The suction device 10a has a drive unit 12a on. The drive unit 12a is designed as a turbine. The drive unit 12a is intended to generate a negative pressure required for suction. The drive unit 12a is provided for generating an intake flow.

Furthermore, the suction device 10a a housing unit 14a on. The housing unit 14a is designed to be mobile. The suction device 10a points to this on the housing unit 14a arranged roles 42a on, which leads to a simple movement of the housing unit 14a are provided. The suction device 10a has four roles as an example 42a on. The housing unit 14a is used to accommodate and protect essential components of the suction device 10a intended. The housing unit 14a takes at least the drive unit 12a on. The housing unit 14a consists of several housing parts 44a , 46a . The housing parts 44a , 46a are formed by separable housing shells. The housing unit 14a has a first housing part 44a and a second housing part 46a on. On the first housing part 44a are the roles 42a arranged. The suction device 10a has one in the housing unit 14a arranged dust collector 18a to contain dirt separated from the suction stream. The dust collector 18a is in the first housing part 44a recorded. The dust collector 18a is at least partially in one piece with the first housing part 44a educated. The first housing part 44a forms the dust container 18a out. The first housing part 44a has a cylindrical shape. The first housing part 44a is open on one side, in particular an upper side. The opening of the first housing part 44a serves to empty the dust collector 18a . The second part of the housing 46a forms a cover of the first housing part 44a . The second part of the housing 46a is in operation for closing the opening of the first housing part 44a intended. The housing unit 14a has several coupling elements 48a for a releasable coupling of the second housing part 46a with the first housing part 44a on. The coupling elements 48a are on the second housing part 46a arranged. The coupling elements 48a are formed by snap locks. The second part of the housing 46a is about the coupling elements 48a releasable with the first housing part 44a connectable. The second part of the housing 46a is to accommodate the drive unit 12a intended. The drive unit 12a is in the second housing part 46a recorded.

The housing unit 14a also forms a suction opening 16a out. The suction opening 16a is on the first housing part 44a arranged. The suction opening 16a opens into the dust container in particular 18a . The suction opening 16a is formed by a hose connection. The suction opening 16a is formed by a cylindrical hose connection. The suction opening 16a is from a hose connector to a coupling with a suction hose 50a educated. The suction opening 16a is in at least one operating state of the drive unit 12a provided for sucking in, in particular contaminated, ambient air by means of the suction flow. The suction opening 16a is in a suction mode of the drive unit 12a provided for sucking in, in particular contaminated, ambient air by means of the suction flow. The suction opening 16a is especially variable with different suction hoses 50a and suction attachments can be coupled.

Furthermore, the housing unit forms 14a one from the suction port 16a different dirt opening 20a out. The dirt opening 20a is in the second housing part 46a educated. The dirt opening 20a is in a region of the opening of the first housing part 44a arranged. The dirt opening 20a is on an upper side of the second housing part 46a arranged. The dirt opening 20a connects an environment via the dirt opening in an open state 20a with the dust collector 18a . The dirt opening 20a extends parallel to the opening of the first housing part 44a . A cross-sectional area of the dirt opening 20a is much larger than a cross-sectional area of the suction opening 16a . The cross-sectional area of the dirt opening 20a is at least twice, preferably 3 times and particularly preferably at least 5 times as large as the cross-sectional area of the suction opening 16a . The dirt opening 20a is in the at least one operating state for filling the dust collector 18a intended. The dirt opening 20a is in the suction mode to fill the dust container 18a intended. A filling of the suction opening 16a different dirt opening 20a can be independent of the suction opening 16a take place with the suction opening 16a and the dirt opening 20a can be used at the same time. The dirt opening 20a is at least partially coupled to the intake flow for drawing in, in particular contaminated, ambient air. The dirt opening 20a is coupled to the intake flow in at least one operating state.

Furthermore, the housing unit 14a a funnel element 52a on. The funnel element 52a closes on the inside of the dirt opening 20a and tapers into the dust collector 18a . The funnel element 52a prevents dirt from escaping from the dirt opening 20a by the suction flow, especially when the dirt opening is opened 20a .

It is also proposed that the suction device 10a at least one locking unit 24a has, which leads to an optional opening and closing of the dirt opening 20a is provided. By means of the clamping unit 24a can the dirt opening 20a be made accessible or the dirt opening 20a getting closed. The clamping unit 24a has two operating positions, namely an open position and a closed position. The closed position is in the 1 and 3 shown. The open position is in the 2 shown. The clamping unit 24a in a closed position prevents dirt from passing through the dirt opening 20a and that a loss of suction power through the dirt opening 20a he follows. By means of the clamping unit 24a can be prevented in a closed state that dirt from the dust collector 18a got to the outside. The clamping unit 24a has one on the housing unit 14a pivoting flap 36a for an optional opening and closing of the dirt opening 20a on. The flap 36a the clamping unit 24a is on the second housing part 46a pivoted. The flap 36a is intended in a closed position to the dirt opening 20a to be covered directly from the outside. The flap 36a the clamping unit 24a is intended to be moved manually by an operator from a closed position to an open position. The flap 36a the clamping unit 24a has a handle that is not visible any further. The flap 36a the clamping unit 24a is also designed to be manually moved from an open position to a closed position. During operation, the flap will 36a in particular temporarily opened by an operator in order to during suction operation, for example by means of a hand shovel 58a , Dirt over the dirt opening 20a dispose. Then the flap 36a to be closed again.

Furthermore, the suction device 10a a control and / or regulating unit 30a on. The control and / or regulating unit 30a is used to control and / or regulate the drive unit 12a intended. Furthermore, the suction device 10a a sensor unit 26a to detect a closed position of the clamping unit 24a on. The sensor unit 26a is with the control and / or regulating unit 30a coupled. The sensor unit 26a has a contact sensor, which in a closed position of the closing unit 24a from the flap 36a the clamping unit 24a is contacted. About the sensor unit 26a can for example by means of the control and / or regulating unit 30a a suction power of the drive unit 12a be adjusted. It would be conceivable, for example, that the control and / or regulating unit 30a a suction power of the drive unit 12a when opening the clamping unit 24a temporarily increased.

The suction device 10a has an operating unit 54a on. The control unit 54a has at least one control element 32a on.

Furthermore, the suction device 10a an actuator 28a on. The actuator 28a is provided for this purpose, depending on a closed position of the clamping unit 24a the at least one dirt opening 20a to couple with the intake flow or to decouple from it. The actuator 28a is provided for this purpose, depending on a closed position of the clamping unit 24a the at least one suction opening 16a to couple with the intake flow or to decouple from it. The actuator 28a is to open and / or close the suction opening 16a intended. The actuator 28a is on the inside of the suction opening 16a arranged. The actuator 28a is formed by a normally open contact. The actuator 28a is formed by a valve, in particular by an electrically controlled valve. The actuator 28a is in an open state of the clamping unit 24a provided for the suction opening 16a close. The actuator 28a is provided in a closed state of the locking unit 24a the suction opening 16a to open and to couple with the intake flow. The actuator 28a is in particular for an automatic closing of the suction opening 16a and an exclusive suction through the dirt opening 20a intended. However, it would also be conceivable that the actuator 28a the suction opening 16a only partially closed, so that suction through the dirt opening 20a the suction power at the suction opening 16a decreased. The actuator 28a is automatically by means of the control and / or regulating unit 30a controlled. Used by means of the sensor unit 26a an opening of the clamping unit 24a is detected, the actuator is 28a closed. However, it would also be conceivable that the actuator 28a is formed by a mechanical closer and only mechanically with the locking unit 24a is coupled, wherein an opening of the locking unit 24a a closing of the suction opening 16a by means of the actuator 28b causes. Alternatively, it would also be conceivable that the actuator 28a is operated by means of a button. However, it would also be conceivable that the actuator 28a is waived.

In addition, the suction device 10a a filter unit 22a on. The filter unit 22a is fluidically behind the intake opening along the intake flow 16a and behind the dirt opening 20a arranged and is provided to separate dirt from the intake flow. The filter unit 22a can also flow in front of or behind the drive unit 12a be arranged. The filter unit 22a is an example of the flow in front of the drive unit 12a and behind the dust collector 18a arranged. However, it would also be conceivable that the drive unit 12a also in front of the filter unit 22a is arranged and dirt unfiltered by the drive unit 12a is pulled. The filter unit 22a has a filter which is provided in an operation for filtering extracted air. The filter is formed by a lamellar filter. The filter unit 22a is in the second housing part 46a arranged.

In the 4th to 11 three further embodiments of the invention are shown. The following descriptions are essentially limited to the differences between the exemplary embodiments, with the same components, features and functions being restricted to the description of the other exemplary embodiments, in particular the 1 to 3 , can be referenced. To distinguish the exemplary embodiments, the letter a in the reference numerals of the exemplary embodiment is 1 to 3 by the letters b, c and d in the reference numerals of the exemplary embodiments of 4th to 11 replaced. With regard to components with the same designation, in particular with regard to components with the same reference numbers, the drawings and / or the description of the other exemplary embodiments, in particular the 1 to 3 , to get expelled.

4th shows a suction device 10b . The suction device 10b is formed by a vacuum cleaner. The suction device 10b has a housing unit 14b on. The housing unit 14b consists of several housing parts 44b , 46b . The housing parts 44b , 46b are formed by separable housing shells. The housing unit 14b has a first housing part 44b and a second housing part 46b on.

The housing unit 14b also forms a suction opening 16b out. The suction opening 16b is on the first housing part 44b arranged.

Furthermore, the housing unit forms 14b one from the suction port 16b different dirt opening 20b out. The dirt opening 20b is in the first housing part 44b educated. The dirt opening 20b is in one side of the first housing part 44b arranged. The dirt opening 20b is of a rectangular recess in one side of the first housing part 44b educated. The dirt opening 20b connects an environment via the dirt opening in an open state 20b with a dust collector 18b . A cross-sectional area of the dirt opening 20b is much larger than a cross-sectional area of the suction opening 16b . The cross-sectional area of the dirt opening 20b is at least 2 times, preferably 3 times, larger than the cross-sectional area of the suction opening 16b . The dirt opening 20b is in the at least one operating state for filling the dust collector 18b intended. The dirt opening 20b is in the suction mode to fill the dust container 18b intended. A filling of the suction opening 16b different dirt opening 20b can be independent of the suction opening 16b take place with the suction opening 16b and the dirt opening 20b can be used at the same time. The dirt opening 20b is at least partially coupled to the intake flow for drawing in, in particular contaminated, ambient air. The dirt opening 20b is coupled to the intake flow in at least one operating state.

It is also proposed that the suction device 10b at least one locking unit 24b has, which leads to an optional opening and closing of the dirt opening 20b is provided. By means of the clamping unit 24b can the dirt opening 20b be made accessible or the dirt opening 20b getting closed. The clamping unit 24b has two operating positions, namely an open position and a closed position. The closed position is in the 4th shown. The open position is in the 6th shown. The clamping unit 24b in a closed position prevents dirt from passing through the dirt opening 20b and that a loss of suction power through the dirt opening 20b he follows. By means of the clamping unit 24b can be prevented in a closed state that dirt from the dust collector 18b got to the outside.

The clamping unit 24b has one on the housing unit 14b guided slide 34b for an optional opening and closing of the dirt opening 20b on. The slider 34b the clamping unit 24b is directly on the housing unit 14b guided. The housing unit 14b has a not further visible guide rail in which the slide 34b is led. The slider 34b the clamping unit 24b is on a side wall of the first housing part 44b arranged and horizontally movable. The slider 34b the clamping unit 24b is provided in a closed position to the dirt opening 20b to conceal directly from the inside. The slider 34b the clamping unit 24b is intended to be brought from a closed position to an open position by an operator in a semi-automated manner. The clamping unit 24b has for this purpose an actuator, which is not further visible, which is used to electrically open and close the slide 34b is provided.

The suction device 10b has an operating unit 54b on. The control unit 54b has at least one control element 32b on. The control element 32b is to open the clamping unit 24b intended. The control element 32b is exemplified by a push button. For example, it is conceivable that the operator controls the control element 32b operated and the slide 34b the clamping unit 24b thereby by means of the actuator of the clamping unit, which is not further visible 24b opens and either closes again after a defined time or as soon as the control element 32b is released. During operation, the slide is 34b in particular temporarily opened by an operator in order to during the suction operation, for example by means of a hand shovel 58b , Dirt over the dirt opening 20b dispose. Then the slide 34b to be closed again.

Furthermore, the suction device 10b a control and / or regulating unit 30b on. The control and / or regulating unit 30b is used to control and / or regulate the drive unit 12b intended. Furthermore, the suction device 10b a sensor unit 26b to detect a closed position of the clamping unit 24b on. The sensor unit 26b is with the control and / or regulating unit 30b coupled. The sensor unit 26b has a contact sensor, which in a Closed position of the clamping unit 24b from the flap 36b the clamping unit 24b is contacted. About the sensor unit 26b can for example by means of the control and / or regulating unit 30b a suction power of the drive unit 12b be adjusted. It would be conceivable, for example, that the control and / or regulating unit 30b a suction power of the drive unit 12b when opening the clamping unit 24b temporarily increased. Furthermore, the control and / or regulating unit 30b provided in at least one operating state, the clamping unit 24b to open automatically and the dirt opening 20b to be coupled with the intake flow. The control and / or regulating unit 30b is when the control element is actuated 32b provided by an operator to the clamping unit 24b to open automatically and the dirt opening 20b to be coupled with the intake flow. By opening the clamping unit 24b is at the dirt opening 20b Dirt into the dust collector by means of the suction flow 18b sucked off.

The suction device 10b has an actuator 28b on. The actuator 28b is provided for this purpose, depending on a closed position of the clamping unit 24b as well as depending on an actuation of the control element 32b the at least one dirt opening 20b and / or the suction opening 16b to couple with the intake flow or to decouple from it. The actuator 28b is to switch between the dirt opening 20b and the suction opening 16b intended. The actuator 28b is formed by a changeover switch. The actuator 28b is formed by a valve, in particular by an electrically controlled 3/2-way valve. The actuator 28b is in an open state of the clamping unit 24b provided to the suction flow with the dirt opening 20b instead of the suction opening 16b to couples. The actuator 28b is provided in a closed state of the locking unit 24b the suction flow with the suction opening 16b instead of the dirt opening 20b to pair. The actuator 28b is in particular to an automatic switching between the suction opening 16b and the dirt opening 20b intended. When the control element is activated 32b becomes the suction flow with the dirt opening 20b instead of the suction opening 16b coupled. However, it would also be conceivable that the actuator 28b the suction flow only partially diverts, so that suction via the dirt opening 20b the suction power at the suction opening 16b merely reduced. The actuator 28b is automatically by means of the control and / or regulating unit 30b upon actuation of the actuating element 32a controlled. However, it would also be conceivable that the actuator 28b is formed by a mechanical changeover switch, which mechanically controls the intake flow when the closing unit is opened 24b toggles ( 7th ).

8th shows a suction device 10c . The suction device 10c is formed by a vacuum cleaner. The suction device 10c has a housing unit 14c on. The housing unit 14c consists of several housing parts 44c , 46c . The housing parts 44c , 46c are formed by separable housing shells. The housing unit 14c has a first housing part 44c and a second housing part 46c on.

The housing unit 14c also forms a suction opening 16c out. The suction opening 16c is on the first housing part 44c arranged.

Furthermore, the housing unit forms 14c one from the suction port 16c different dirt opening 20c out. The dirt opening 20c is in the first housing part 44c educated. The dirt opening 20c is in one side of the first housing part 44c arranged. The dirt opening 20c is of a rectangular recess in one side of the first housing part 44c educated. The dirt opening 20c connects an environment via the dirt opening in an open state 20c with the dust collector 18c . A cross-sectional area of the dirt opening 20c is much larger than a cross-sectional area of the suction opening 16c . The cross-sectional area of the dirt opening 20c is at least 2 times, preferably 3 times, larger than the cross-sectional area of the suction opening 16c . The dirt opening 20c is in the at least one operating state for filling the dust collector 18c intended. The dirt opening 20c is in the suction mode to fill the dust container 18c intended. A filling of the suction opening 16c different dirt opening 20c can be independent of the suction opening 16c take place with the suction opening 16c and the dirt opening 20c can be used at the same time. The dirt opening 20c is at least partially coupled to the intake flow for drawing in, in particular contaminated, ambient air. The dirt opening 20c is coupled to the intake flow in at least one operating state.

It is also proposed that the suction device 10c at least one locking unit 24c has, which leads to an optional opening and closing of the dirt opening 20c is provided. By means of the clamping unit 24c can the dirt opening 20c be made accessible or the dirt opening 20c getting closed. The clamping unit 24c has two operating positions, namely an open position and a closed position. The closed position is in the 8th shown. The open position is in the 9 shown. The clamping unit 24c in a closed position prevents dirt from passing through the dirt opening 20c as well as that a loss of suction power through the dirt opening 20c he follows. By means of the clamping unit 24c can be prevented in a closed state that dirt from the dust collector 18c got to the outside.

The clamping unit 24c has one on the housing unit 14c pivoting flap 36c for an optional opening and closing of the dirt opening 20a on. The flap 36c the clamping unit 24c is directly on the housing unit 14c pivoted. The flap 36c the clamping unit 24c is on a side wall of the second housing part 46c arranged and pivotable out. The flap 36c the clamping unit 24c is provided in a closed position to the dirt opening 20c to be covered and filled in directly from the outside. The flap 36c the clamping unit 24c is intended to be moved manually by an operator from a closed position to an open position. The flap 36c is made from the second housing part 46c folded out. Closing the flap 36c the clamping unit 24c is also done manually. However, it would also be conceivable for the flap to be closed 36c at least partially automated. During operation, the flap will 36c in particular temporarily opened by an operator in order to during the suction operation, for example by means of a hand shovel 58c , Dirt over the dirt opening 20c dispose. Then the flap 36c to be closed again.

Furthermore, the suction device 10c a control and / or regulating unit 30c on. The control and / or regulating unit 30c is used to control and / or regulate the drive unit 12c intended. Furthermore, the suction device 10c a sensor unit 26c to detect a closed position of the clamping unit 24c on. The sensor unit 26c is with the control and / or regulating unit 30c coupled. The sensor unit 26c has a contact sensor, which in a closed position of the closing unit 24c from the flap 36c the clamping unit 24c is contacted. About the sensor unit 26c can for example by means of the control and / or regulating unit 30c a suction power of the drive unit 12c be adjusted. It would be conceivable, for example, that the control and / or regulating unit 30c a suction power of the drive unit 12c when opening the clamping unit 24c temporarily increased.

Furthermore, the suction device 10c an actuator 28c on. The actuator 28c is provided for this purpose, depending on a closed position of the clamping unit 24c the at least one dirt opening 20c to couple with the intake flow or to decouple from it. The actuator 28c is to open and / or close the suction opening 16c intended. The actuator 28c is formed by a normally open contact. The actuator 28c is formed by a valve, in particular by an electrically controlled valve. The actuator 28c is in an open state of the clamping unit 24c provided for the suction opening 16c close. The actuator 28c is provided in a closed state of the locking unit 24c the suction opening 16c to open and to couple with the intake flow. The actuator 28c is in particular for an automatic closing of the suction opening 16c and an exclusive suction through the dirt opening 20c intended. However, it would also be conceivable that the actuator 28c the suction opening 16c only partially closed, so that suction through the dirt opening 20c the suction power at the suction opening 16c decreased. The actuator 28c is automatically by means of the control and / or regulating unit 30c controlled. Used by means of the sensor unit 26c an opening of the clamping unit 24c is detected, the actuator is 28c closed. However, it would also be conceivable that the actuator 28c is formed by a mechanical closer and only mechanically with the locking unit 24c is coupled, wherein an opening of the locking unit 24c a closing of the suction opening 16c by means of the actuator 28b causes ( 10 ).

It would be particularly conceivable that on the flap 36c In addition, an intermediate collecting container is arranged in which the dirt is collected before it enters the dust collecting container with the suction flow 18c is sucked in. The intermediate collecting container can in particular be fixed on an inside of the flap 36c be arranged. In particular, the intermediate collecting container with the flap 36c at least partially from the housing unit 14c be folded out.

11 shows a suction device 10d . The suction device 10d is formed by a vacuum cleaner. The suction device 10d has a housing unit 14d on. The housing unit 14d consists of several housing parts 44d , 46d . The housing parts 44d , 46d are formed by separable housing shells. The housing unit 14d has a first housing part 44d and a second housing part 46d on.

The housing unit 14d also forms a suction opening 16d out. The suction opening 16d is on the first housing part 44d arranged.

Furthermore, the housing unit forms 14d one from the suction port 16d different dirt opening 20d out. The dirt opening 20d is in the first housing part 44d educated. The dirt opening 20d is in one side of the first housing part 44d arranged. The dirt opening 20d is of a rectangular recess in one side of the first housing part 44d educated. The dirt opening 20d connects an environment via the dirt opening in an open state 20d with the dust collector 18d . The dirt opening 20d is via a separate suction channel 56d with the dust collector 18d connected. The suction channel 56d is exemplified in the second housing part 46d arranged. The housing unit 14d forms the suction channel 56d out. A cross-sectional area of the dirt opening 20d is much larger than a cross-sectional area of the suction opening 16d . The cross-sectional area of the dirt opening 20d is at least 2 times, preferably 3 times, larger than the cross-sectional area of the suction opening 16d . The dirt opening 20d is in the at least one operating state for filling the dust collector 18d intended. The dirt opening 20d is in the suction mode to fill the dust container 18d intended. A filling of the suction opening 16d different dirt opening 20d can be independent of the suction opening 16d take place with the suction opening 16d and the dirt opening 20d can be used at the same time. The dirt opening 20d is at least partially coupled to the intake flow for drawing in, in particular contaminated, ambient air. The dirt opening 20d is coupled to the intake flow in at least one operating state.

It is also proposed that the suction device 10d at least one locking unit 24d has, which leads to an optional opening and closing of the dirt opening 20d is provided. By means of the clamping unit 24d can the dirt opening 20d be made accessible or the dirt opening 20d getting closed. The clamping unit 24d has two operating positions, namely an open position and a closed position. The closed position is in the 11 shown. The open position is in the 12th shown. The clamping unit 24d in a closed position prevents dirt from passing through the dirt opening 20d and that a loss of suction power through the dirt opening 20d he follows. By means of the clamping unit 24d can be prevented in a closed state that dirt from the dust collector 18d got to the outside.

The clamping unit 24d has one in the housing unit 14d guided drawer 38d for an optional opening and closing of the dirt opening 20d on. The drawer 38d the clamping unit 24d is no longer visible via the pull-out rails on the housing unit 14d guided. The drawer 38d the clamping unit 24d is on a side wall of the first housing part 44d arranged and partially extractable. The drawer 38d the clamping unit 24d is provided in a closed position to the dirt opening 20d to be filled out. The drawer 38d the clamping unit 24d is intended to be moved manually by an operator from a closed position to an open position. The drawer 38d is made from the first housing part 44d pulled out. Closing the drawer 38d the clamping unit 24d is also done manually. However, it would also be conceivable for the drawer to be closed 38d at least partially automated.

Furthermore, the suction device 10d a control and / or regulating unit 30d on. The control and / or regulating unit 30d is used to control and / or regulate the drive unit 12d intended. Furthermore, the suction device 10d a sensor unit 26d to detect a closed position of the clamping unit 24d on. The sensor unit 26d is with the control and / or regulating unit 30d coupled. The sensor unit 26d has a contact sensor, which in a closed position of the closing unit 24d from the drawer 38d the clamping unit 24d is contacted.

Furthermore, the suction device 10d an actuator 28d on. The actuator 28d is provided for this purpose, depending on a closed position of the clamping unit 24d the at least one dirt opening 20d to couple with the intake flow or to decouple from it. The actuator 28d is to open and / or close the suction channel 56d intended. The actuator 28d is formed by a valve, in particular by an electrically controlled valve. The actuator 28d is in a closed state of the clamping unit 24d provided for the suction channel 56d to open at least temporarily. The actuator 28d is provided in a closed state of the locking unit 24d the intake flow with a receiving area 40d the drawer 38d to pair. The suction channel 56d extends exactly between the receiving area 40d the drawer 38d and the dust collector 18d . The actuator 28d is provided for this purpose, the suction channel 56d temporarily after closing the clamping unit 24d open to the recording area 40d suck out ( 13th ).

During operation, the drawer will 38d in particular temporarily opened by an operator in order to during the suction operation, for example by means of a hand shovel 58d , Dirt over the dirt opening 20d dispose. This is the recording area 40d the drawer 38d filled with dirt. Then the drawer can 38d be closed again, the recording area 40d in a closed state of the drawer 38d by means of the suction flow into the dust collector 18d is sucked out.

Claims (13)

Suction device, in particular vacuum cleaner, with at least one drive unit (12a; 12b; 12c; 12d) for generating a suction flow, with at least one housing unit (14a; 14b; 14c; 14d) which has at least one suction opening (16a; 16b; 16c; 16d ) which is provided in at least one operating state of the drive unit (12a; 12b; 12c; 12d) for drawing in, in particular contaminated, ambient air by means of the suction flow, and with at least one in the housing unit (14a; 14b; 14c; 14d) arranged dust collector (18a; 18b; 18c; 18d) for receiving dirt separated from the suction flow, characterized in that the housing unit (14a; 14b; 14c; 14d) at least one of the suction opening (16a; 16b; 16c; 16d) forms different dirt opening (20a; 20b; 20c; 20d) which is provided in the at least one operating state for filling the dust collecting container (18a; 18b; 18c; 18d). Suction device according to Claim 1 , characterized in that the at least one dirt opening (20a; 20b; 20c; 20d) is at least partially coupled to the intake flow for drawing in, in particular contaminated, ambient air. Suction device according to Claim 1 or 2 , characterized in that a cross-sectional area of the dirt opening (20a; 20b; 20c; 20d) is significantly larger than a cross-sectional area of the suction opening (16a; 16b; 16c; 16d). Suction device according to one of the preceding claims, characterized by at least one filter unit (22a; 22b; 22c; 22d) which flows along the suction flow behind the suction opening (16a; 16b; 16c; 16d) and behind the dirt opening (20a; 20b; 20c; 20d) is arranged and is provided to separate dirt from the intake flow. Suction device according to one of the preceding claims, characterized by at least one closing unit (24a; 24b; 24c; 24d) which is provided for an optional opening and closing of the dirt opening (20a; 20b; 20c; 20d). Suction device according to Claim 5 , characterized by at least one sensor unit (26a; 26b; 26c; 26d) for detecting a closed position of the at least one closing unit (24a; 24b; 24c; 24d). Suction device at least after Claim 5 , characterized by at least one actuator (28a; 28b; 28c; 28d) which is provided to open the at least one dirt opening (20a; 20b; 20c; 20d) depending on a closed position of the at least one closing unit (24a; 24b; 24c; 24d) ) and / or to couple the at least one suction opening (16a; 16b; 16c; 16d) to the suction flow or to decouple it therefrom. Suction device at least after Claim 5 , characterized by at least one control and / or regulating unit (30b) which, in at least one operating state, in particular when an operator actuates an operating element (32b), is provided to automatically open the closing unit (24b) and the at least one To couple dirt opening (20b) with the suction flow. Suction device at least after Claim 5 , characterized in that the at least one closing unit (24b) has at least one slide (34b) guided on the housing unit (14b) for an optional opening and closing of the dirt opening (20b). Suction device at least after Claim 5 , characterized in that the at least one closing unit (24c) has at least one flap (36c) pivotably mounted on the housing unit (14c) for an optional opening and closing of the dirt opening (20c). Suction device at least after Claim 5 , characterized in that the at least one closing unit (24d) has at least one drawer (38d) guided in the housing unit (14d) for an optional opening and closing of the dirt opening (20d). Suction device according to Claim 11 , characterized by at least one actuator (28d) which is provided to couple the suction flow to a receiving area (40d) of the drawer (38d) in a closed state of the closing unit (24d). Closing unit for a suction device (10a; 10b; 10c; 10d) according to one of the preceding claims.

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