MODULAR AIR PURIFICATION SYSTEM

Description

State of the art

[0001] A modular air purification system is already known from EP 3 135 168 B, WO 2018 / 188 736 A1, DE 40 27 089 A1, US 5 588 985 A and US 7 282 074 B1. Disclosure of the invention

[0002] A modular air purification system is proposed, comprising at least one modular air purification device, in particular a toolbox-like device, and at least one extension module, in particular a toolbox-like device, wherein the at least one modular air purification device has at least one flow generation unit, in particular for an ambient air intake, and at least one coupling unit for coupling the modular air purification device with the at least one extension module.

[0003] The modular air purification system is designed, in particular, at least to purify ambient air. "Designed" is understood to mean specifically designed and / or equipped. The fact that an object is designed for a specific function is understood to mean, in particular, that the object fulfills and / or performs this specific function in at least one application and / or operating state. The modular air purification system is preferably designed, at least, to draw in, filter, and / or purify ambient air and release the purified air into the environment. In particular, the modular air purification system is designed to generate a clean room air volume of at least 10 m³, preferably at least 20 m³, and most preferably at least 30 m³.A "clean room air volume" is understood to mean, in particular, an area in which the air has a dust concentration below the occupational exposure limit of 1.25 mg / m³ for respirable dust and / or below the occupational exposure limit of 10 mg / m³ for inhalable dust. The modular air purification system is preferably intended for use in environments with polluted ambient air, for example, on a construction site. The modular air purification system, and in particular the modular air purification device, is preferably portable. It is especially preferred that the modular air purification system, and in particular the modular air purification device, be battery-operated. However, it is also conceivable that the modular air purification system, and in particular the modular air purification device, be wired and / or stationary.The modular air purification system preferably comprises at least one drive unit, which is designed to drive the modular air purification device, in particular the flow generation unit of the modular air purification device. The drive unit is preferably designed as an electric motor. However, other configurations of the drive unit that would be considered useful by a person skilled in the art are also conceivable. The flow generation unit is preferably designed to draw in ambient air. The modular air purification system, in particular the flow generation unit and / or an air purification unit of the expansion module, preferably has / have different operating modes. Operating modes can be, for example, an energy-saving Eco mode, a particularly power-intensive Power mode, a standby mode, an output mode, and / or another operating mode that would be considered useful by a person skilled in the art.The flow generation unit is designed, for example, as a fan, blower, compressor, or the like. The modular air purification system preferably defines a flow channel through which an airflow can be directed. The flow generation unit is specifically designed to move the intake air through the flow channel. The flow generation unit is preferably arranged at least partially within the flow channel. At least a portion of the flow channel is preferably defined by the modular air purification device. It is conceivable that the modular air purification device includes at least one air filter unit. The air filter unit is specifically designed to filter and / or purify the contaminated ambient air, preferably the air drawn in by the flow generation unit.The flow generation unit is preferably designed to supply the intake air to the air filter unit and, in particular, to discharge air cleaned and / or filtered by the air filter unit from the air filter unit. The air filter unit may be designed as a membrane filter, a liquid filter, or the like. The air filter unit preferably comprises at least one air filter element. The air filter element may, for example, be a clean air filter, a dust filter, a particle filter, a fine dust filter, or the like.

[0004] The modular air purification device preferably comprises at least one housing unit. The housing unit is, in particular, designed like a toolbox. For example, the housing unit is designed as a hand toolbox, as is already known to those skilled in the art from DE 10 2012 218 601 A1. The housing unit comprises at least one base housing and at least one housing cover. The base housing preferably consists of at least one bottom cover and side walls attached to the bottom cover. The modular air purification device preferably comprises at least one bearing unit for a movable mounting of the housing cover on the base housing. The bearing unit comprises, for example, at least one pivot bearing, in particular a hinge, a linear bearing, or the like.The housing cover is preferably movably mounted on the base housing of the housing unit by means of a bearing unit, either along the housing unit and / or about a bearing axis, for example by means of a hinge of the bearing unit. It is conceivable that the housing cover is permanently or detachably attached to the base housing. The housing unit preferably includes at least one cover clasp by means of which the housing cover can be fixed to the base housing in a closed position. The housing unit preferably has at least one handle for convenient transport of the modular air purification device. It is conceivable that the handle is movably mounted on the base housing or the housing cover, or that it is fixed to the base housing or the housing cover.

[0005] Preferably, the modular air purification system comprises several expansion modules. Preferably, the expansion module and / or the multiple expansion modules are designed in a toolbox-like manner. Preferably, the expansion module and / or the multiple expansion modules each comprise at least one module housing. The module housing of the expansion module and / or the respective module housing of the multiple expansion modules is designed, for example, as a toolbox, as is already known to those skilled in the art from DE 10 2012 218 601 A1. The module housing comprises, for example, at least one module base housing and a module housing cover, wherein the module housing cover is, for example, movably mounted to the module base housing, particularly preferably by means of a hinge or the like. The module base housing preferably consists of at least a bottom cover and side walls attached to the bottom cover.The module housing preferably includes at least one lid closure by means of which the module housing lid can be fixed to the module base housing in a closed position. It is conceivable that the module housing lid is attached to the module base housing in a detachable or non-detachable manner. Preferably, the modular air purification device and the expansion module and / or the multiple expansion modules are designed to be stackable. Preferably, the module housing of the expansion module and / or the respective module housing of the multiple expansion modules is designed to fit precisely with the housing unit of the modular air purification device.

[0006] The expansion module comprises, for example, the air purification unit, a power supply unit, a lighting unit, and / or other units that a person skilled in the art would consider useful for extending the functionality of the modular air purification system. It is also conceivable that a dust collection container belonging to a dust collection unit of the modular air purification system is arranged on the expansion module. The dust collection unit is preferably designed to collect dust from the environment. It is conceivable that the dust collection unit includes an electrostatic cover for collecting dust, preferably designed as an electrostatic base cover for the modular air purification device and / or the expansion module. The multiple expansion modules are preferably designed differently. It is also conceivable that each of the multiple expansion modules includes a flow generation unit.The air purification unit is designed, for example, as an air filter, in particular a membrane filter, a liquid filter, in particular a centrifugal separator, or the like. Preferably, the air purification unit designed as a membrane filter comprises at least one filter element, which is designed as a clean air filter, a dust filter, a particle filter, a fine dust filter, or the like. Alternatively, it is also conceivable that the modular air purification system, in particular the modular air purification device, is designed without filters.

[0007] The power supply unit is preferably designed to supply power to at least one of the modular air purification devices, in particular the drive unit of the modular air purification device. The power supply unit is, for example, configured as a battery, a battery pack, or the like. It is additionally or alternatively conceivable that the power supply unit is configured to charge machine tool batteries or the like. The lighting unit is, for example, designed to illuminate a work area. The power supply unit is specifically designed to supply the lighting unit with electrical energy. Alternatively, it is also conceivable that the lighting unit comprises at least one power supply element, for example, a battery, a battery pack, a solar module, or the like.The lighting unit preferably comprises at least one lighting element, for example, an incandescent bulb, a halogen bulb, a xenon bulb, an LED, or the like; more preferably, several lighting elements. The lighting unit is preferably designed to be adjustable in its orientation. It is particularly preferred that the lighting elements are independently adjustable in their respective orientations. It is conceivable that the lighting unit is continuously adjustable or adjustable in steps. The lighting unit is particularly adjustable in at least one orientation plane or in at least two degrees of freedom. Preferably, the lighting unit is movably mounted on the module housing of the expansion module, in particular on the module base housing and / or on the module housing cover.

[0008] The coupling unit is preferably designed to establish a mechanical and / or electrical coupling between the modular air purification device, in particular the housing unit, and the expansion module and / or the multiple expansion modules, in particular the module housing of the expansion module and / or the respective module housing of the multiple expansion modules. Preferably, a coupling created by the coupling unit between the modular air purification device and the expansion module and / or the multiple expansion modules is detachable. The coupling unit comprises, for example, at least one mechanical and / or one electrical coupling element.Preferably, the coupling unit is arranged at least partially on a housing unit of the modular air purification device and / or on the module housing of the expansion module and / or on the module housings of the multiple expansion modules, particularly preferably at least partially integrally with the housing unit and / or the module housing of the expansion module and / or the module housings of the multiple expansion modules. The phrase "partially integrally formed" means, in particular, that the units have at least one, in particular at least two, advantageously at least three common elements that are a component, and in particular a functionally important component, of both units.The mechanical coupling element can, for example, be designed to latch, clamp, screw, or otherwise connect the modular air purification device, in particular the housing unit of the modular air purification device, to the expansion module, in particular the module housing of the expansion module. For mechanical coupling, the coupling unit comprises, for example, undercuts, a threaded connection, a rotary lock, a snap lock, or the like. The mechanical coupling element can, for example, be designed as a locking lug, a locking recess, a screw, a thread, or the like. The electrical coupling element is, for example, designed as a plug, a cable, an electrical contact, or the like. The coupling unit preferably has at least one further mechanical coupling element designed as a counterpart to the mechanical coupling element.A mechanical coupling between the modular air purification device and the expansion module can be achieved through the interaction of the mechanical coupling element with the further mechanical coupling element. In particular, the mechanical coupling element is arranged on the air purification device, preferably on the housing cover or the bottom cover of the base housing, and the further mechanical coupling element is arranged on the expansion module, particularly on the module housing cover or the bottom cover of the module housing. The coupling unit preferably includes at least one further electrical coupling element, which is designed as a counterpart to the electrical coupling element.By interacting with the other electrical coupling element, an electrical coupling between the modular air purification device and the expansion module can be established. In particular, the electrical coupling element is arranged on the air purification device, preferably on the housing cover or the bottom cover of the base housing, and the other electrical coupling element is arranged on the expansion module, particularly on the module housing cover or the bottom cover of the module housing. This advantageously expands the functionality of an air purification system. It also advantageously allows for particularly flexible adaptation of the functionality of an air purification system. Furthermore, it advantageously provides an air purification system whose functionality can be adapted to an operating environment with particular ease.Because the functionality of the air purification system can be adapted particularly flexibly to an operating environment, particularly efficient operation of the air purification system can be ensured.

[0009] Furthermore, it is proposed that the flow generation unit be operatively connected, particularly fluidically, to at least one of the air purification units of the extension module, in particular the air purification unit already mentioned, by means of the coupling unit. The air purification unit is arranged, in particular, on the module housing, preferably within the module housing. The module housing preferably defines at least one air purification area of ​​the air purification unit. The coupling unit is preferably designed to connect the air purification area of ​​the air purification unit to the part of the flow channel defined by the modular air purification device, in particular by means of a fluid connection. The coupling unit preferably has at least one fluid coupling element. The fluid coupling element can, for example, be designed as a flow channel opening of the flow channel.It is also conceivable that the fluid coupling element is designed as a flow channel connector, a pipe, a hose, a nozzle, or the like. The coupling unit preferably has at least one further fluid coupling element, which is designed as a counterpart to the fluid coupling element. Through interaction of the fluid coupling element with the further fluid coupling element, a fluid coupling of the modular air purification device with the expansion module can be generated, wherein, in particular, the fluid coupling element is arranged or formed on the air purification device and the further fluid coupling element on the expansion module. Advantageously, air drawn in by the flow generation unit can be purified by means of the air purification unit of the expansion module.Advantageously, the air purification unit and / or the flow generation unit can be replaced particularly conveniently, especially for repair and / or cleaning.

[0010] Furthermore, it is proposed that the coupling unit comprises at least one poka-yoke element designed for coupling with the extension module, enabling it to interact with at least one further poka-yoke element of the coupling unit arranged on the extension module. Preferably, the mechanical coupling element is configured as the poka-yoke element, and the further mechanical coupling element is configured as the further poka-yoke element. Preferably, the poka-yoke element is arranged on the modular air purification device, in particular on the flow generation unit of the modular air purification device. It is conceivable that the poka-yoke element is formed integrally with a component of the modular air purification device, in particular integrally with a component of the flow generation unit.The term "one-piece" is to be understood in particular as being at least materially bonded, for example by a welding process, an adhesive bonding process, an injection molding process, and / or another process that would appear appropriate to a person skilled in the art, and / or advantageously formed in one piece, such as by being manufactured from a single casting and / or by being manufactured using a single- or multi-component injection molding process, and advantageously from a single blank. Preferably, the additional Poka-Yoke element is arranged on the extension module, in particular on the air purification unit of the extension module. It is also conceivable that the additional Poka-Yoke element is formed integrally with the extension module, in particular integrally with a component of the air purification unit.It can be advantageous to enable a particularly convenient coupling of the modular air purification device with an expansion module, thus extending the functionality of the modular air purification system. This also advantageously prevents incorrect coupling of the modular air purification device with the expansion module. Furthermore, it can be advantageous to counteract damage to the modular air purification device and / or the expansion module caused by incorrect coupling.

[0011] It is further proposed that the modular air purification device comprises at least one housing unit, in particular the one already mentioned, on which the flow generation unit is mounted in a manner adjustable for alignment, particularly for angular adjustment, especially for adjusting an airflow axis. The flow generation unit is preferably mounted on the housing unit, in particular the base housing, so as to be movable at least along and / or about the bearing axis. The bearing unit is provided for at least one mounting of the flow generation unit on the housing unit, in particular the base housing, preferably along and / or about the bearing axis. It is also conceivable that the flow generation unit is formed at least partially integrally with the housing unit. The flow generation unit preferably comprises at least one flow generation element, which is designed, for example, as a fan wheel or the like.The airflow axis of the flow generation unit preferably runs at least substantially parallel to a rotation axis of the flow generation element. The flow generation unit is particularly infinitely and / or steplessly adjustable in its orientation. It is conceivable that the orientation of the flow generation unit is adjustable in at least one plane. However, it is also conceivable that the flow generation unit is adjustable in at least two degrees of freedom. Preferably, the orientation of the flow generation unit, in particular the orientation of the airflow axis, can be adjusted by a movement, in particular a rotation, of the flow generation element about the bearing axis. Advantageously, particularly efficient air purification can be achieved. Advantageously, air extraction can be directed and / or concentrated on a desired area with particular ease.

[0012] Furthermore, it is proposed that the modular air purification system comprises at least one control unit and a drive unit, in particular the one already mentioned, wherein the control unit is configured to control the drive unit for automatic alignment of the flow generation unit. The control unit comprises, in particular, at least one control electronics unit. Preferably, the control unit has at least one processor unit and one memory unit, wherein an operating program is preferably stored in the memory unit. The control unit is, for example, arranged, at least partially, in the modular air purification device, in particular, at least partially on and / or within the housing unit of the modular air purification device, in the expansion module, and / or at least partially on an external unit.The external unit can be designed, for example, as a smartphone, a portable machine tool with a communication unit, or similar device. Advantageously, the flow generation unit can be aligned for efficient air intake, air output, and / or air purification, making this particularly convenient.

[0013] Furthermore, it is proposed that the modular air purification device comprises at least one adjustable, in particular foldable and / or telescopic, floor clearance unit, which is designed to at least partially distance at least one housing unit of the modular air purification device from a surface. The floor clearance unit is preferably designed to allow the arrangement of a dust collection container or the like below the housing unit, in particular below a base housing of the housing unit, by distancing the housing unit from the surface. The floor clearance unit is preferably arranged on the base housing of the housing unit.The ground clearance unit is, for example, movably arranged on the housing unit, in particular the base housing of the housing unit, preferably by means of the bearing unit, and more preferably by means of at least one hinge or the like of the bearing unit. It is conceivable that different distances between the housing unit and the ground can be set by adjusting the ground clearance unit, in particular continuously or in steps. The ground clearance unit preferably comprises at least one ground clearance element, and more preferably at least two ground clearance elements. The ground clearance element can, for example, be designed as a folding leg, telescopic leg, or the like. The ground clearance element is preferably movably mounted on the housing unit, in particular the base housing of the housing unit. Preferably, the housing unit rests on the ground when the ground clearance unit is in its retracted position.It is conceivable that the housing unit, preferably the base housing, includes a receiving area for the floor clearance unit, which is designed, in particular, as at least one recess. The receiving area is preferably designed to accommodate the floor clearance unit, and especially preferably at least one floor clearance element, substantially completely in a retracted state. "Substantially completely" is understood to mean, in particular, at least 50%, preferably at least 75%, and especially preferably at least 90% of the total volume and / or total mass of an object, especially the floor clearance element. An additional adjustment, in particular height adjustment, of the modular air purification device can advantageously be implemented to achieve efficient and / or desired extraction. A dust collection container can advantageously be arranged particularly conveniently on the modular air purification device.Advantageously, dust collection containers of different sizes can be arranged on the modular air purification device.

[0014] Furthermore, it is proposed that the flow generation unit has at least one output mode, in particular the one already mentioned, in which the flow generation unit is designed to dispense air. Preferably, the flow generation unit can be operated as a fan. Preferably, the flow generation unit is designed in this output mode to air condition the ambient air. It is also conceivable that the flow generation unit is designed in this output mode to blow away contaminated air, dirt, and / or dust from a surface. Furthermore, it is conceivable that the flow generation unit is designed in this output mode to humidify the ambient air, dispense fragrances, or the like.Preferably, the flow-generating element can be used for air output in the output mode, wherein, in particular, the direction of rotation of the flow-generating element in the output mode is opposite to the direction of rotation of the flow-generating element when drawing in ambient air. Alternatively or additionally, it is conceivable that the flow-generating unit has at least one further flow-generating element, which is, in particular, identical to the flow-generating element. Preferably, the further flow-generating element is arranged on the modular air purification device in such a way that the direction of rotation of the further flow-generating element is oriented such that the flow-generating element can be used for air output. Advantageously, the functionality of the modular air purification system can be extended to include an air conditioning function.It is advantageous to expand the functionality of the modular air purification device in a particularly simple and structurally advantageous way. The flow generation unit can be advantageously used as a fan. It is advantageous to achieve the blowing away of contaminated air, dust, and / or dirt from a surface using the flow generation unit.

[0015] It is further proposed that the modular air purification system include at least one sound reduction unit, in particular one formed at least partially by the flow generation unit, which is designed to generate sound waves that counteract ambient noise. Specifically, the sound reduction unit is intended to reduce ambient noise for a user within its effective range. It is conceivable that sound waves that counteract ambient noise can be generated by means of the flow generation unit, in particular by means of a rotation of the flow generation element. Furthermore, it is conceivable that the rotational speed of the flow generation unit, in particular of the flow generation element, can be adjusted by means of the control unit to generate different sound waves, for example, with regard to volume and / or frequency.Preferably, the sound reduction unit comprises at least one acoustic sensor element to detect at least one characteristic, in particular a frequency, a volume, or the like, of ambient noise. Preferably, the sound waves generated by the sound reduction unit are adaptable depending on at least one characteristic of the ambient noise, in particular depending on at least one characteristic of the ambient noise detected by the acoustic sensor element. It is conceivable that a sensor signal detected by the acoustic sensor element can be evaluated by the control unit. Alternatively or additionally, it is also conceivable that the sound reduction unit is designed as another type of sound reduction unit known to a person skilled in the art. Advantageously, the modular air purification system can be easily extended to include a noise reduction function.

[0016] Furthermore, it is proposed that the modular air purification system comprises at least one dust collection unit, in particular the one already mentioned, which includes at least one dust collection container, in particular the one already mentioned, and at least one closure element designed for at least semi-automatic closure of the dust collection container, particularly depending on an airflow generated by the flow generation unit. Preferably, the dust collection container has at least one opening through which dust can be introduced. It is conceivable that the opening serves as an outlet for emptying the dust collection container. The closure element is preferably arranged at the opening of the dust collection container. The closure element is preferably designed to close the opening of the dust collection container.The closure element is designed, for example, as a flap, a gate valve, or the like. Preferably, the dust collection container, and in particular its opening, is closed by means of the closure element when no ambient air is being drawn in by the flow-generating unit. Preferably, the dust collection container, and more preferably its opening, is closed by means of the closure element in dispensing mode. Preferably, the dust collection container, and in particular its opening, is not closed, at least during the extraction of ambient air by the flow-generating unit, and in particular, is not closed by means of the closure element. Preferably, the closure element is movably arranged on the dust collection container, and in particular, mounted on it.The flow generation unit is preferably designed to apply a force, in particular an airflow force, to the closing element in order to open the dust collection container opening for air and / or dust inlet. Preferably, the closing element is movable relative to the dust collection container opening by means of an airflow generated by the flow generation unit. It is conceivable that a return element, for example a spring, a rubber band, or the like, is arranged on the closing element, which applies a force to the closing element that holds the closing element in a position that closes the dust collection container opening, in particular at least when the flow generation unit is not drawing air or is in dispensing mode.It is also conceivable that the sealing element could be held in a closed position by gravity alone, particularly at least when the flow generation unit is not drawing air or is in output mode. This can advantageously prevent unintentional contamination of the ambient air, the expansion module, the modular air purification device, and / or the flow channel by the dust collected in the dust container. It can also advantageously implement a particularly efficient output mode for the flow generation unit.

[0017] Furthermore, it is proposed that the dust collection unit include at least one bypass designed to provide the flow generation unit with at least one airflow path bypassing the dust collection container, depending on an operating mode, particularly the previously mentioned output mode. For example, the bypass includes a flap control or the like to provide an airflow path bypassing the dust collection container. It is conceivable that the bypass can be controlled by the control unit. Preferably, the airflow path does not pass through the dust collection container, at least in the output mode. Preferably, the dust collection container is closed, at least in the output mode of the flow generation unit. Advantageously, a particularly efficient air output can be achieved.It is advantageous to counteract an unwanted output of polluted air in the output mode of the flow generation unit.

[0018] Furthermore, it is proposed that the modular air purification system include at least one user interaction unit, in particular an optical, acoustic, and / or haptic one, which is configured for user input and / or output of information to a user. The user interaction unit can, for example, be arranged at least partially on the expansion module and / or on multiple expansion modules and / or on the modular air purification device, in particular on the housing unit of the modular air purification device. The user interaction unit can, for example, also be designed at least partially as an external unit, such as a remote control or the like, and / or be integrated at least partially into an external device, such as a smartphone, a computer, or the like.The user interaction unit preferably comprises at least one screen, touchscreen, keypad, microphone, loudspeaker, vibration element, or the like. Information input can include, for example, filter selection, operating mode selection, or the like. Information output can include, for example, information on filter status, operating temperature, environmental characteristics (in particular, ambient dust concentration, dust type, humidity, temperature, or the like), dust collection container fill level, installed expansion modules, or the like. Preferably, the user interaction unit is connected to the control unit via data transmission, in particular wirelessly or via cable. This allows the user to conveniently adjust the functions of the modular air purification system.It is advantageous for a user to receive support when operating the modular air purification system.

[0019] It is further proposed that the user interaction unit be configured to output at least one indication regarding the coupling of the modular air purification device with the expansion module, in particular a graphical coupling guide. Preferably, the user interaction unit is configured to output an indication regarding the coupling of the modular air purification device with the multiple expansion modules and / or regarding the coupling of the multiple expansion modules with each other. Preferably, the user interaction unit is configured to output an indication regarding the coupling in the case of a correct coupling and / or an incorrect coupling of the expansion module and / or the multiple expansion modules with the modular air purification device. Preferably, the user interaction unit outputs the graphical coupling guide at least in the case of an incorrect coupling.Alternatively or additionally, it is conceivable that the graphical pairing instructions could be accessed manually by a user. It is also conceivable that the pairing instructions could be provided audibly. Particularly high ease of use and installation can be advantageously achieved when pairing the expansion module and / or multiple expansion modules with the modular air purification device. This can also be beneficial in preventing improper use of the modular air purification system.

[0020] Furthermore, it is proposed that the modular air purification system comprises at least one hose unit, particularly one that can be coupled to a machine tool, and at least one connection unit designed to couple the hose unit fluidically to the flow generation unit in such a way that the flow generation unit can simultaneously generate a large-area ambient airflow and a directed airflow through the hose unit. The hose unit preferably comprises at least one hose or the like, which can be coupled to the modular air purification device or the expansion module and / or at least one of the several expansion modules by means of the connection unit. The connection unit preferably has at least one hose connection for a mechanical and / or fluidic connection of the hose to the modular air purification device and / or the expansion module.Preferably, a directed air output and / or directed air extraction can be generated by means of the hose unit coupled to the flow generation unit. Preferably, the hose unit is configured in a state coupled to the flow generation unit and the machine tool for directed air extraction in a machining area of ​​the machine tool. The machine tool is, for example, a drill, a hammer drill, a grinding machine, a planer, a saw, or the like. In particular, it is conceivable that the hose unit, in a state coupled to the flow generation unit and the machine tool, is configured for directed air output onto the machining area of ​​the machine tool, for example, to remove dirt, debris, or the like from a workpiece being machined.It is also conceivable that only a large-area ambient airflow or only a directed airflow through the hose unit can be generated by the flow generation unit. Preferably, the flow generation unit is adjustable and / or configurable such that simultaneous generation of the large-area ambient airflow and the directed airflow through the hose unit, or generation of only the large-area ambient airflow or the directed airflow through the hose unit, occurs. Advantageously, air purification by the modular air purification system can be implemented in different ways. Advantageously, directed air extraction and ambient air extraction can be carried out simultaneously.

[0021] Furthermore, it is proposed that the air purification unit be designed as a liquid filter, wherein the flow generation unit is provided to generate an airflow that drives at least one liquid filter element of the air purification unit into motion. Preferably, the liquid filter is designed as a centrifugal separator. Alternatively, it is conceivable that the liquid filter is designed as a liquid bath filter or the like. The liquid filter preferably comprises at least the liquid filter element. The liquid filter element is preferably designed as a filter roller. The liquid filter element is preferably arranged within the module housing of the extension module. In a closed state of the module housing, the liquid filter element is preferably at least substantially completely enclosed by the module housing.The liquid filter element preferably has an axis of rotation about which it is movable. The liquid filter element is preferably movable, at least about its axis of rotation, within the module housing, and in particular, mounted thereon. The flow generation unit is specifically designed to generate rotation of the liquid filter element about its axis of rotation. Advantageously, particularly high-performance air purification can be achieved using the modular air purification system. Advantageously, a modular air purification system with a liquid filter can be easily and simply designed.

[0022] Furthermore, it is proposed that the modular air purification system comprises a single drive unit, in particular the one already mentioned, which is designed to drive a plurality of, in particular different, modular air purification devices and / or several, in particular the several, expansion modules already mentioned, flow generation units. Preferably, the coupling unit is designed to enable the drive unit to power the plurality of flow generation units. Preferably, the drive unit is arranged on the modular air purification device, particularly preferably within the housing unit of the modular air purification device. Alternatively, it is conceivable that the expansion module or one of the several expansion modules comprises the drive unit.Preferably, the control unit is configured to enable swarm-intelligent operation of a plurality of, in particular, different modular air purification devices and / or flow generation units comprised of several expansion modules. Advantageously, a high level of functionality of the modular air purification system can be achieved while simultaneously keeping manufacturing costs low. Advantageously, a particularly compact drive system for multiple flow generation units can be enabled.

[0023] Furthermore, it is proposed that the modular air purification system comprise at least one, in particular adjustable, gear unit designed to transmit at least one motion parameter of the drive unit to several, in particular the aforementioned, expansion modules with varying gear ratios, thus enabling different flow characteristics in different air purification zones. It is conceivable that the gear unit is designed and / or adjustable such that a high air volume at low velocity can be achieved in at least one air purification zone. It is also conceivable that the gear unit is designed and / or adjustable such that a low air volume at high velocity can be achieved in at least one further air purification zone.The air purification zones are preferably each defined and / or limited by an extension module of several extension modules, in particular by an air purification unit, preferably by the module housing of the respective extension module of several extension modules. Alternatively or additionally, other flow characteristics for the air purification zones are conceivable, which can be realized by means of the gear unit. Advantageously, particularly efficient air purification can be achieved by adapting the flow characteristics in different air purification zones.

[0024] Furthermore, it is proposed that the modular air purification system comprise at least one turbine unit fluidically coupled to the flow generation unit, designed to influence the flow characteristics of an airflow generated by the flow generation unit differently in different air purification zones. It is conceivable that the turbine unit is provided as an alternative to or in addition to the gearbox unit. Preferably, the turbine unit is designed to generate at least the flow characteristics that can be produced by the gearbox unit. The turbine unit is, for example, designed as a turbine-like geometry that extends over the several expansion modules and preferably differs in its shape depending on the desired flow characteristics in the respective air purification zone. This can advantageously enable particularly efficient air purification.Advantageously, different flow characteristics can be generated when using a single drive unit.

[0025] Furthermore, it is proposed that the expansion module comprises at least one packaging unit designed to at least semi-automatically package at least one filter element of at least one air purification unit of the expansion module in a substantially dust-tight manner, particularly during filter changes. Preferably, the packaging unit is arranged on the module housing of the expansion module. The packaging unit preferably comprises at least one packaging element. The packaging element is, for example, designed as a plastic bag or the like. The packaging element, designed as a plastic bag, is preferably designed to hold the filter element during a filter change. The packaging element is arranged on the module housing relative to the filter element in such a way that, when the filter is removed, the packaging element slides at least partially automatically over the filter element.Preferably, the packaging unit is designed to seal the packaging element when the filter element is removed, for example, by means of an adhesive strip or the like. It is also conceivable that the packaging unit is designed to coat the filter element with a resin or the like before it is removed from the module housing, or to melt the filter element in such a way that its pores are sealed. It is conceivable that used and / or sealed filter elements are recyclable and / or usable as firelighters or the like. A modular air purification system can advantageously be extended by a convenience function that, in particular, enables a particularly convenient filter change. It is advantageous to counteract, at least during a filter change, unwanted contamination of the modular air purification system and / or the surrounding area.

[0026] Furthermore, it is proposed that the air purification unit comprise at least one filter element, in particular the one already mentioned, which has adjustable filter pores, especially automatically depending on a flow pressure. Preferably, the size of the filter pores is adjustable. It is also conceivable that the number of active filter pores is adjustable. Advantageously, particularly efficient air purification can be achieved by means of the modular air purification system. Advantageously, the air purification unit can be adapted particularly easily to a flow pressure to enable optimal filter performance.

[0027] It is further proposed that the modular air purification system comprises at least one dust detection unit configured to detect an ambient dust concentration upon which the flow generation unit and / or the air purification unit can be controlled. The dust detection unit is preferably arranged at least partially on the modular air purification device and / or on the expansion module and / or the multiple expansion modules. It is also conceivable that the dust detection unit is arranged at least partially on the machine tool, on the external device, and / or on a garment. For example, the dust detection unit is designed as a sensor unit configured at least to detect an ambient dust concentration.Preferably, the dust detection unit is connected to the control unit via data transmission and / or is at least partially formed by the control unit. The control unit preferably allows the flow generation unit and / or the air purification unit to be controlled based on the ambient dust concentration detected by the dust detection unit, particularly based on a sensor signal from the dust detection unit configured as a sensor unit. Preferably, an operating mode of the modular air purification system, particularly of the flow generation unit and / or the air purification unit, is automatically adjustable based on the detected ambient dust concentration. It is conceivable that, depending on the detected ambient dust concentration, flow characteristics can be adapted by means of the flow generation unit, the gear unit, and / or the turbine unit.Preferably, the orientation of the flow generation unit is automatically adjustable depending on the detected ambient dust concentration. It is conceivable that the air purification unit automatically switches between different filter elements for air filtration depending on the detected ambient dust concentration. The ambient dust concentration detected by the dust detection unit can preferably be displayed via the user interaction unit. Advantageously, a modular air purification system can be adapted particularly precisely to an ambient dust concentration. It is advantageous to provide a modular air purification system that can operate particularly efficiently by adapting the flow generation unit and / or the air purification unit to an ambient dust concentration.

[0028] Furthermore, it is proposed that the modular air purification system includes at least one dust detection unit configured to detect types of ambient dust, depending on which the flow generation unit and / or the air purification unit can be controlled. Examples of ambient dust types include total suspended dust, respirable dust, inhalable dust, respirable dust, fibrous dust, wood dust, flour dust, glass dust, asbestos dust, tobacco smoke, or the like. Preferably, an operating mode of the modular air purification system, in particular of the flow generation unit and / or the air purification unit, is automatically adjustable depending on the type of ambient dust detected. It is conceivable that, depending on the type of ambient dust detected, flow characteristics can be adapted by means of the flow generation unit, the gearbox unit, and / or the turbine unit.Preferably, the orientation of the flow generation unit is automatically adjustable depending on the type of ambient dust detected. The air purification unit preferably switches automatically between different filter elements for air filtration depending on the type of ambient dust. Furthermore, it is also conceivable that the filter pores of the filter element are automatically adjustable depending on the type of ambient dust detected. The type of ambient dust detected by the dust detection unit can preferably be displayed via the user interaction unit. Advantageously, air purification using the modular air purification system can be adapted particularly precisely to a specific type of ambient dust. A modular air purification system can advantageously be provided that can operate particularly efficiently by adapting the flow generation unit and / or the air purification unit to a specific type of ambient dust.

[0029] Furthermore, it is proposed that the dust detection unit, particularly in at least one embodiment, be designed without dust sensors. Preferably, the dust detection unit is at least partially formed by the control and / or regulating unit. The dust detection unit comprises, for example, at least one evaluation unit, which may in particular be formed by the control and / or regulating unit. Preferably, the dust sensor-free dust detection unit, in particular the evaluation unit of the dust sensor-free dust detection unit, is designed to detect at least one dust concentration and / or one type of ambient dust based on operating parameters of the modular air purification system, machine tool data, environmental parameters, or the like.Operating parameters of the modular air purification system include, for example, operating time, operating temperature, flow characteristics of the airflow generation unit, settings of the air purification unit, and the like. Machine tool data includes, for example, tool speed, tool temperature, tool noise level, and the like. Environmental parameters include, for example, temperature, humidity, and / or the like. The functionality of the modular air purification system can be advantageously extended to include dust collection, at least partially utilizing existing components. A dust collection function can be implemented in a particularly cost-effective manner.

[0030] Furthermore, it is proposed that the modular air purification system include at least one communication unit, particularly a wireless one, configured for data exchange, especially with at least one machine tool and / or with at least one other modular air purification device. The communication unit could be, for example, a radio module, a WLAN module, a Bluetooth module, and / or the like. It is also conceivable that the communication unit could be configured, at least partially, for wired data exchange. It is also conceivable that the modular air purification system could be connected to a smartphone, a server, or the like via the communication unit. Advantageously, a modular air purification system with a communication function can be provided.Advantageously, by transmitting and evaluating operating data from the modular air purification system, damage can be detected at an early stage, for example.

[0031] Furthermore, it is proposed that the modular air purification system comprises at least one control unit, in particular the one already mentioned, which is configured to automatically set an operating mode depending on received machine tool data and / or air purification device data, in particular to control the flow generation unit and / or at least one air purification unit of the expansion module. It is also conceivable that a machine tool and / or further modular air purification device connected to the modular air purification system via the communication unit can be set, preferably automatically, depending on at least one operating mode of the modular air purification system or on at least one environmental parameter.It is also conceivable that the turbine unit and / or the gearbox unit can be automatically controlled by the control unit based on received machine tool data and / or air purification device data. Advantageously, communication between the modular air purification system and, for example, a machine tool, another modular air purification device, or the like, can ensure particularly efficient operation of the aforementioned components.

[0032] Furthermore, it is proposed that the modular air purification system comprise at least one control and / or regulation unit, preferably the one mentioned above, and in particular a self-learning unit, which is configured to recognize user requirements and to control the flow generation unit and / or the air purification unit depending on an evaluation of the recognized user requirements. User requirements can be, for example, a desired filter performance, a suction volume, a blowing volume, or the like. Preferably, the control and / or regulation unit is configured to recognize the user requirements by evaluating operating data of the modular air purification system. Alternatively or additionally, it is also conceivable that the control and / or regulation unit evaluates machine tool data and / or air purification device data from at least one further modular air purification device to recognize user requirements.The modular air purification system can be advantageously and automatically adapted to the user's needs, making operation particularly convenient. Furthermore, the system's operation can be continuously and automatically optimized.

[0033] Furthermore, the invention relates to a modular air purification device, particularly one of the aforementioned types, especially for a modular air purification system according to the invention, with at least one housing unit, preferably one of the aforementioned types, particularly one resembling a toolbox. Advantageously, the functionality of the modular air purification system can be adapted and / or expanded particularly conveniently.

[0034] Furthermore, it is proposed that the modular air purification device comprises at least one, in particular the previously mentioned, flow generation unit, which is arranged on a housing cover of the housing unit, preferably the previously mentioned, and in particular pivotably mounted. The flow generation unit is preferably arranged at least partially on the housing cover of the housing unit. Alternatively or additionally, it is also conceivable that the flow generation unit is arranged at least partially on the base housing of the housing unit. The flow generation element is particularly preferably arranged on the housing cover of the housing unit, and particularly preferably integrated into the housing cover. Alternatively, it is conceivable that the flow generation element is arranged on the base housing of the housing unit or integrated into the base housing.It is conceivable that the flow generation unit is at least partially movably mounted on the housing cover or the base housing. Preferably, the airflow axis can be adjusted by moving the housing cover relative to the base housing. It is also conceivable that the airflow axis can be adjusted by moving the flow generation unit, in particular the flow generation element, relative to the housing cover and / or the base housing. Advantageously, an orientation-adjustable flow generation unit, in particular an adjustment of the airflow axis, can be implemented simply from a design perspective.

[0035] Furthermore, the invention relates to an expansion module, in particular the one already mentioned, especially for a modular air purification system according to the invention, with at least one air purification unit, in particular the one already mentioned, which is provided for dust binding and / or air filtration. Advantageously, an air purification unit can be provided that can expand the functionality of a modular air purification system particularly flexibly and easily.

[0036] Furthermore, it is proposed that the expansion module include at least one packaging unit, in particular the one mentioned previously, designed to package at least one filter element of the air purification unit in a dustproof manner, at least semi-automatically, especially during filter changes. This can advantageously counteract unwanted contamination of the ambient air by a dirty filter element. A particularly user-friendly filter change can also be advantageously implemented.

[0037] The modular air purification system, the modular air purification device, and / or the expansion module according to the invention are not / should not be limited to the application and embodiment described above. In particular, the modular air purification system, the modular air purification device, and / or the expansion module according to the invention may, to fulfill a function described herein, have a different number of individual elements, components, and units than the number specified herein. Furthermore, values ​​within the specified limits of the value ranges stated in this disclosure shall also be considered disclosed and freely usable. Drawings

[0038] Further advantages become apparent from the following description of the drawings. The drawings illustrate four exemplary embodiments of the invention. The drawings, the description, and the claims contain numerous features in combination. A person skilled in the art will expediently consider the features individually and combine them into meaningful further combinations.

[0039] They show: Fig. 1 a schematic representation of a modular air purification system according to the invention, Fig. 2 a modular air purification device of the modular air purification system according to the invention with a floor clearance unit, Fig. 3 part of a coupling unit of the air purification system according to the invention, Fig. 4 a schematic airflow path in a flow channel of the modular air purification device, Fig. 5 an extension module of the modular air purification system, Fig. 6 an extension module according to the invention designed as a membrane filter, Fig. 7 an alternative embodiment of a floor clearance unit of an air purification device according to the invention, Fig. 8 a first alternative embodiment of a coupling unit of an air purification system according to the invention in a schematic representation, Fig. 9 a second alternative embodiment of a coupling unit of an air purification system according to the invention in a schematic representation, and Fig.10. A third alternative embodiment of a coupling unit of an air purification system according to the invention in a schematic representation. Description of the exemplary embodiment

[0040] Figure 1 Figure 1 shows a modular air purification system 10 with at least one modular air purification device 12. The modular air purification system 10 is designed to draw in, filter, and / or purify ambient air and release the purified air into the environment. The modular air purification system 10, and in particular the modular air purification device 12, is portable. The modular air purification device 10 comprises at least one housing unit. The housing unit is designed, for example, as a tool case, as already known to those skilled in the art from DE 10 2012 218 601 A1. The housing unit 30 comprises at least one base housing 104 and at least one housing cover 72 (cf. Figure 2The base housing 30 consists of at least a bottom cover and side walls attached to the bottom cover. The modular air purification device 12 comprises at least one bearing unit 98 for the movable mounting of the housing cover 72 on the base housing 30. The bearing unit 98 comprises, for example, at least one pivot bearing, in particular a hinge, a linear bearing, or the like. The housing cover 72 is movably mounted on the base housing 104 of the housing unit 30 along and / or about a bearing axis 96 by means of a hinge of the bearing unit 98.

[0041] It is conceivable that the housing cover 72 is permanently or detachably attached to the base housing 104. The housing unit 30 includes at least one cover clasp (not shown) by means of which the housing cover 72 can be fixed to the base housing 104 in a closed position. The housing unit 30 has at least one handle 120 for convenient transport of the modular air purification device 12. The handle 120 is formed by the base housing 104 of the housing unit 30. It is also conceivable that the handle 120 is movably mounted on the base housing 104 or the housing cover 72, or that it is fixed to the base housing 104 or the housing cover 72. The modular air purification system 10 is battery-operated. However, it is alternatively or additionally conceivable that the modular air purification system 10 includes an electrical connection element, for example, a cable, a connector, or the like, for wired operation.

[0042] The modular air purification system 10 comprises three expansion modules 14, 22, 24. It is also conceivable that the modular air purification system 10 has a number of expansion modules other than three, but that the modular air purification system 10 includes at least one expansion module. The expansion modules 14, 22, 24 are designed like toolboxes. Each expansion module 14, 22, 24 includes at least one module housing 94. The module housings 94 of the expansion modules 14, 22, 24 are designed, for example, as hand toolboxes, as is already known to those skilled in the art from DE 10 2012 218 601 A1. The module housings 94 each comprise at least one module base housing 130 and one module housing cover 132, wherein the module housing cover 132 is movably mounted on the module base housing 130 by means of a hinge or the like (see Figure 5The module base housing 130 consists of at least a base cover and side walls attached to the base cover. Each module housing 94 includes at least one lid closure (not shown) by means of which the respective module housing lid 132 can be fixed in a closed position on the respective module base housing 130. It is conceivable that the respective module housing lid 132 is attached to the module base housing 130 either detachably or permanently. The modular air purification device 12 and the expansion modules 14, 22, 24 are designed to be stackable. The module housings of the expansion modules 14, 22, 24 are designed to fit precisely with the housing unit 30 of the modular air purification device 12. The modular air purification device 12 includes at least one flow generation unit 16 (see Figure 1). Figure 2The flow generation unit 16 is provided for at least one ambient air intake. The flow generation unit 16 is designed as a fan. It is also conceivable that the flow generation unit 16 is designed as a ventilator, a blower, a compressor, or the like. The modular air purification system 10 defines a flow channel 76 through which an airflow can be guided, which is at least partially limited by the modular air purification device 12 and / or the extension modules 14, 22, 24. The flow generation unit 16 is designed to move the intake air through the flow channel 76. The flow generation unit 16 is arranged at least partially within the flow channel 76. The modular air purification system 10 comprises a drive unit 36, which is designed to drive the modular air purification device 12, in particular the flow generation unit 16 of the modular air purification device 12.The drive unit 36 ​​is designed as an electric motor. The drive unit 36 ​​is arranged within the housing unit 30 of the modular air purification device 12. Alternatively, it is conceivable that one of the expansion modules 14, 22, 24 comprises the drive unit 36. The modular air purification system 10 has different operating modes, such as an energy-saving Eco mode, a Power mode, a Standby mode, an Output mode, and / or another operating mode that would appear useful to a person skilled in the art.

[0043] The modular air purification system 12 comprises at least one control and / or regulating unit 34. The control and / or regulating unit 34 includes at least one control electronics unit (not shown). The control and / or regulating unit 34 has at least one processor unit and one memory unit, wherein at least one operating program is stored in the memory unit (not shown). The control and / or regulating unit 34 is arranged at least partially within the modular air purification device 12, in particular at least partially within the housing unit 30 of the modular air purification device 12. Alternatively, it is also conceivable that the control and / or regulating unit 34 is arranged at least partially on the expansion modules 14, 22, 24 or at least partially on an external unit, for example, a smartphone, a machine tool with a communication unit, or the like.The control and / or regulating unit 34 is designed to enable swarm-intelligent operation of a plurality of, in particular, different modular air purification devices (not shown) and / or the flow generation units 134 comprising the several expansion modules 14, 22, 24.

[0044] The modular air purification system 10 comprises at least one user interaction unit 50, which is configured for user input and / or output of information to a user. The user interaction unit 50 is designed to be visual, acoustic, and / or haptic. The user interaction unit 50 is arranged on the housing unit 30 of the modular air purification device 12. It is also conceivable that the user interaction unit 50 is at least partially arranged on one of the expansion modules 14, 22, 24, is at least partially designed as an external unit, for example, as a remote control or the like, and / or is at least partially integrated into an external device, for example, a smartphone, a computer, or the like.The user interaction unit 50 comprises, for example, at least a screen, a touchscreen, a keypad, a microphone, a speaker, a vibration element, or the like. The user interaction unit 50 is connected to the control and / or regulation unit 34 via data transmission, in particular wirelessly or via cable.

[0045] The user interaction unit 50 is configured to output at least one notification regarding the coupling of the modular air purification device 12 with at least one of the expansion modules 14, 22, 24. This notification could be, for example, a graphical coupling guide. The user interaction unit 50 is configured to output a notification regarding the coupling process in the event of a correct coupling and / or an incorrect coupling of the expansion modules 14, 22, 24 with the modular air purification device 12 and / or of the expansion modules 14, 22, 24 with each other. The user interaction unit 50 outputs the graphical coupling guide at least in the event of an incorrect coupling. It is conceivable that the graphical coupling guide could be accessed manually by a user. It is also conceivable that the coupling guide could be output audibly.

[0046] The modular air purification device 12 comprises at least one air filter unit 78. The flow generation unit 16 is designed to supply the intake air to the air filter unit 78. The air filter unit 78 is designed to filter and / or purify the contaminated ambient air, in particular that drawn in by means of the flow generation unit 16. The flow generation unit 16 is designed to discharge the ambient air purified and / or filtered by the air filter unit 78 from the air filter unit 78. It is conceivable that the air filter unit 78 is designed as a membrane filter, a liquid filter, or the like. It is conceivable that the air filter unit 78 comprises at least one air filter element. The air filter element can, for example, be designed as a clean air filter, a dust filter, a particle filter, a fine dust filter, or the like.

[0047] The expansion modules 14 and 22 each comprise at least one air purification unit 20. The air purification unit 20 of the expansion module 14 is designed as a membrane filter (see figure). Figure 6Preferably, the air purification unit 20 of the expansion module 14 comprises at least one filter element 66, which is configured as a clean air filter, a dust filter, a particle filter, a fine dust filter, or the like. It is also conceivable that the air purification unit 20 of the expansion module 14 is configured as a liquid filter, a centrifugal separator, or the like. Alternatively, it is conceivable that the modular air purification system 10, in particular the modular air purification device 12, is filter-free. The expansion module 24 is configured as a power supply unit 80. The power supply unit 80 is provided for at least one power supply to the modular air purification device 12, in particular to the drive unit 36 ​​of the modular air purification device 12. The power supply unit 80 is configured as a battery pack.It is also conceivable that the power supply unit 80 is configured for charging power tool batteries or the like. Alternatively or additionally, it is also conceivable that the three expansion modules 14, 22, 24 each comprise an air purification unit, a power supply unit, a lighting unit, and / or other units that would appear useful to a person skilled in the art for extending the functionality of the modular air purification system 10, wherein a lighting unit, preferably continuously or in steps adjustable in orientation, comprises in particular at least one lighting element, for example an incandescent bulb, a halogen bulb, a xenon bulb, an LED, or the like, preferably several lighting elements. Furthermore, it is conceivable that a dust collection container of a dust collection unit 42 of the modular air purification system 10 is arranged on at least one of the expansion modules 14, 22, 24.The dust collection unit 42 is designed to collect ambient dust. It is also conceivable that the dust collection unit 42 includes an electrostatic cover for collecting dust, preferably designed as an electrostatic base cover of the modular air purification device 12 or as an electrostatic base cover of at least one of the extension modules 14, 22, 24.

[0048] The modular air purification system 10 comprises at least one coupling unit 18 for coupling the modular air purification device 12 with the expansion modules 14, 22, 24. The single drive unit 36 ​​is designed to drive a plurality of, in particular, different modular air purification devices (not shown) and / or the multiple expansion modules 14, 22, 24, flow generation units 134. The coupling unit 18 is designed to enable the drive of the plurality of flow generation units 134 by the single drive unit 36 ​​by coupling the plurality of flow generation units 134 with the drive unit 36. The coupling unit 18 is designed to provide at least a detachable mechanical and / or electrical coupling of the modular air purification device 12, in particular the housing unit 30, with the extension modules 14, 22, 24, in particular the module housings 94.The coupling unit 18 is at least partially arranged on the housing unit 30 of the modular air purification device 12 and on the module housings 94 of the expansion modules 14, 22, 24. It is conceivable that the coupling unit 18 is at least partially formed integrally with the housing unit 30. The coupling unit 18 comprises at least one mechanical coupling element 82, which is designed as a poka-yoke element 26, and at least one further mechanical coupling element 84, which is designed as another poka-yoke element 28. For mechanical coupling, the coupling unit 18 includes a click-lock mechanism, which is formed at least by the mechanical coupling element 82 and the further mechanical coupling element 84 (see [reference]). Figure 3The mechanical coupling element 82 is designed to lock the modular air purification device 12 to the extension module 22, in particular by an interaction of the mechanical coupling element 82 with the further mechanical coupling element 84, wherein the mechanical coupling element 82 is arranged on the air purification device 12, in particular on the housing cover 72, and the further mechanical coupling element 84 is arranged on the extension module 22, in particular on the bottom cover of the housing module 94 of the extension module 22. The mechanical coupling element 82 is designed as a locking lug. The further mechanical coupling element 84 is designed as a locking lug receptacle.

[0049] Alternatively, a coupling unit 18' is also conceivable, which has at least one coupling element 82' and at least one further coupling element 84', which are designed as corresponding undercuts (cf. Figure 8Another alternative coupling unit 18" is in Figure 9 The figure shows a coupling element 82" and at least one further mechanical coupling element 84", which, by means of a rotation relative to each other, enable a coupling of a modular air purification device 12" with an extension module 22", in particular forming a rotary lock, preferably a bayonet lock. Alternatively, a coupling unit 18‴ is also conceivable, which has a threaded connection for the mechanical coupling of a modular air purification device 12‴ with an extension module 22‴ (see figure). Figure 10The threaded connection is formed by at least one mechanical coupling element 82‴ and at least one further mechanical coupling element 84‴. The further mechanical coupling element 84‴ is designed as a screw, and the mechanical coupling element 82‴ is designed as a thread corresponding to the screw. The threaded mechanical coupling element 82‴ is arranged on the modular air purification device 12‴, preferably in a housing unit 30‴ of the modular air purification device 12‴. A module housing 94‴ of the extension module 22‴ has at least one screw recess 124‴ through which the screw-designed further mechanical coupling element 84‴ can be guided to couple with the mechanical coupling element 82‴.

[0050] The coupling unit 18 comprises at least one electrical coupling element 90, which is configured, for example, as a plug, cable, electrical contact, or the like, wherein the coupling unit 18 comprises at least one further electrical coupling element 92, which is configured as a counterpart to the electrical coupling element 90. The at least one electrical coupling element 90 is arranged on the expansion module 24, in particular on a module housing cover of the module housing 94 of the expansion module 24, and the at least one further electrical coupling element 92 is arranged on the modular air purification device 12, in particular on the bottom cover of the base housing 104, in order to enable an electrical connection between the expansion module 24, in particular the power supply unit 80, and the modular air purification device 12, in particular the drive unit 36.

[0051] The air purification units 20 of the expansion modules 14, 22 are arranged on the respective module housing 94 of the expansion modules 14, 22, preferably within the respective module housing 94. The respective module housing 94 defines at least one air purification area of ​​the air purification units 20. The flow generation unit 16 of the modular air purification device 12 can be operatively connected to at least one respective air purification unit 20 of the expansion modules 14, 22 by means of the coupling unit 18. The air purification units 20 of the expansion modules 14, 22 are each designed for dust binding and / or air filtration. The flow generation unit 16 of the modular air purification device 12 can be operatively connected to the respective air purification unit 20 of the expansion modules 14, 22 by means of the coupling unit 18.The coupling unit 18 is designed to fluidically connect the respective air purification area of ​​the air purification units 20 of the extension modules 14, 22 with the portion of the flow channel 76 bounded by the modular air purification device 12. The coupling unit 18 comprises at least one fluid coupling element 86, which is configured as a flow channel opening of the flow channel 76. The coupling unit 18 has at least one further fluid coupling element 88, which is configured correspondingly to the fluid coupling element 86.It is also conceivable that the fluid coupling element 86 is designed as a flow channel connector, as a pipe, as a hose, as a nozzle or the like, which is intended in particular to connect at least two flow channel sections of the flow channel 76, which are delimited, for example, by the modular air purification device 12 and / or one of the extension modules 14, 22, and / or is intended to connect the air purification area of ​​at least one of the air purification units 20 of the extension modules 14, 22 with the flow channel 76 delimited by the flow generation unit 16.The at least one fluid coupling element 86 is arranged on the modular air purification device 12 and the at least one further fluid coupling element 88 is arranged on the extension module 22 in order to enable a fluid connection between the modular air purification device 12, in particular the flow generation unit 16, and the extension module 22, in particular the air purification unit 20 of the extension module 22.

[0052] The modular air purification system 10 comprises at least one gear unit 62, which is designed to transmit at least one motion parameter of the drive unit 36 ​​to the several expansion modules 14, 22 with different gear ratios to achieve various flow characteristics in different air purification zones. The gear unit 62 is adjustable. It is conceivable that the gear unit 62 is designed or adjustable such that a high air volume at low velocity can be achieved in at least one air purification zone. It is also conceivable that the gear unit 62 is designed and / or adjustable such that a low air volume at high velocity can be achieved in at least one other air purification zone. Alternatively or additionally, other flow characteristics for the air purification zones are also conceivable, which can be achieved by means of the gear unit 62.

[0053] The modular air purification system 10 comprises, as an alternative or additional component to the gearbox unit 62, at least one turbine unit 74 coupled to the flow generation unit 16. The turbine unit 74 is designed to influence the flow characteristics of an airflow generated by the flow generation unit 16 differently in different air purification zones. It is intended to generate at least the flow characteristics that can be produced by the gearbox unit 62. The turbine unit 74 is designed as a turbine-like geometry that extends over the extension modules 14 and 22 and may differ depending on the desired flow characteristics in the respective air purification zone.

[0054] The modular air purification system 10 comprises at least one hose unit 52. The hose unit 52 can be connected, for example, to a machine tool. The modular air purification system 10 comprises at least one connection unit 54, which is designed to connect the hose unit 52 fluidically to the flow generation unit 16 in such a way that the flow generation unit 16 can simultaneously generate a large-area ambient airflow and a directed airflow through the hose unit 52. The hose unit 52 comprises two hoses 112, each of which can be connected to the expansion modules 14, 22 or the modular air purification device 12 by means of the connection unit 54. The connection unit 54 has at least two hose connections 122 for a mechanical and / or fluidic connection of the hoses 112 to the modular air purification device 12 and / or the expansion modules 14, 22.One of the two hose connections 122 is arranged on the extension module 14. Another of the two hose connections 122 is arranged on the modular air purification device 12. A directed air extraction and / or a directed air output can be generated by means of the hose unit 52 coupled to the flow generation unit 16. The hose unit 52 is designed to be coupled to the flow generation unit 16 and the machine tool for directed air extraction or directed air output in a machining area of ​​the machine tool. It is also conceivable that only a large-area ambient airflow or only a directed airflow can be generated by the hose unit 52 using the flow generation unit 16.It is conceivable that the flow generation unit 16 is adjustable and / or configurable in such a way that simultaneous generation of the large-area ambient airflow and the directed airflow by the hose unit 52 or only generation of the large-area ambient airflow or the directed airflow by the hose unit 52 takes place.

[0055] The air purification unit 20 of the extension module 22 is designed as a liquid filter 56, wherein the flow generation unit 16 is designed to generate an airflow that drives at least one liquid filter element 58 of the air purification unit 20 to movement. The liquid filter element 58 is designed as a filter roller 60. The liquid filter 56 is designed as a centrifugal separator. It is also conceivable that the liquid filter 56 is designed as a liquid bath filter or the like. The liquid filter element 58 is arranged within the module housing 94 of the extension module 22. In a closed state of the module housing 94, the liquid filter element 58 is at least substantially completely enclosed by the module housing 94. The liquid filter element 58 has an axis of rotation 114 about which the liquid filter element 58 is rotatable.The liquid filter element 58 is movably arranged in the module housing 94 about its axis of rotation 114. The flow generation unit 16 is designed to generate a rotation of the liquid filter element 58 about its axis of rotation 114.

[0056] The modular air purification system 10 comprises at least one dust detection unit 68, which is configured to detect an ambient dust concentration upon which the flow generation unit 16 and / or the air purification unit 20 can be controlled. The dust detection unit 68 is at least partially arranged on the modular air purification device 12. It is also conceivable that the dust detection unit 68 is at least partially arranged on at least one of the expansion modules 14, 22, 24, on the machine tool, on the external device, and / or on a garment. The dust detection unit 68 is connected to the control and / or regulating unit 34 via data transmission or is at least partially formed by the control and / or regulating unit 34.The control unit 34 can be used to control the flow generation unit 16, the air purification unit 20 (of at least one of the expansion modules 14, 22), the gearbox unit 62, and / or the turbine unit 74, depending on the ambient dust concentration detected by the dust detection unit 68. It is conceivable that an operating mode of the modular air purification system 10 can be automatically adjusted depending on the detected ambient dust concentration. It is also conceivable that flow characteristics can be adapted by means of the flow generation unit 16, the gearbox unit 62, and / or the turbine unit 74, depending on the detected ambient dust concentration. Furthermore, it is conceivable that the orientation of the flow generation unit 16 can be automatically adjusted depending on the detected ambient dust concentration.The ambient dust concentration detected by the dust detection unit 68 can be output via the user interaction unit 50.

[0057] The dust detection unit 68 is designed to detect types of ambient dust, depending on which the flow generation unit 16, the air purification unit 20 (of at least one of the expansion modules 14, 22), the gearbox unit 62, and / or the turbine unit 74 can be controlled. An operating mode of the modular air purification system 10 is automatically adjustable depending on the type of ambient dust detected. It is conceivable that, depending on the type of ambient dust detected, flow characteristics can be adjusted by means of the flow generation unit 16, the gearbox unit 62, and / or the turbine unit 74. Furthermore, it is conceivable that the orientation of the flow generation unit 16 can be automatically adjusted depending on the type of ambient dust detected. The type of ambient dust detected by the dust detection unit 68 can be output via the user interaction unit 50. The dust detection unit 68 is designed without dust sensors.The dust detection unit 68, for example, comprises at least one evaluation unit, which may be formed by the control and / or regulation unit 34 (not shown). The evaluation unit of the dust sensor-free dust detection unit 68 is designed to detect at least a dust concentration and / or an ambient dust type based on operating parameters of the modular air purification system 10, machine tool data, environmental parameters, or the like. Alternatively, it is conceivable that the dust detection unit 68 is designed as a sensor unit that is at least configured to detect an ambient dust concentration. Depending on a sensor signal from the dust detection unit 68 designed as a sensor unit, the flow generation unit 16, the air purification unit 20 of at least one of the expansion modules 14, 22, the gear unit 62, and / or the turbine unit 74 can be controlled by means of the control and / or regulation unit 34.

[0058] The modular air purification system 10 comprises at least one communication unit 70 configured for data exchange. The communication unit 70 is configured for data exchange with the machine tool and / or another modular air purification device 12. The communication unit 70 is wireless. It is also conceivable that the communication unit 70 is configured for wired communication. The communication unit 70 is, for example, a radio module, a WLAN module, a Bluetooth module, or the like. It is conceivable that the modular air purification system 10 can be connected to a smartphone, a server, or the like via the communication unit 70.

[0059] The control unit 34 is configured to automatically set an operating mode based on received machine tool data and / or air purification device data, in particular to control the flow generation unit 16, at least one air purification unit 20 of the expansion modules 14, 22, the gear unit 62 and / or the turbine unit 74. It is also conceivable that a machine tool connected to the modular air purification system 10 via the communication unit 70 and / or further modular air purification devices 12 can be set, in particular automatically, based on at least one operating mode of the modular air purification system 10 or on at least one environmental parameter.

[0060] The control unit 34 is self-learning. The control unit 34 is configured to recognize user requirements and to control the flow generation unit 16, at least one air purification unit 20 of the expansion modules 14, 22, the gear unit 62, and / or the turbine unit 74 based on an evaluation of the recognized user requirements. The control unit 34 is configured to recognize user requirements by evaluating operating data from the modular air purification system 10. Alternatively or additionally, it is also conceivable that the control unit 34 evaluates machine tool data and / or air purification device data from at least one further modular air purification device (not shown) to recognize user requirements.

[0061] Figure 2Figure 1 shows a schematic representation of the modular air purification device 12. The modular air purification device 12 comprises at least the housing unit 30, on which the flow generation unit 16 is mounted so as to be adjustable in its orientation. The flow generation unit 16 is mounted on the housing unit 30 so as to be adjustable in its orientation, in particular angularly, to adapt to an airflow axis 32. The flow generation unit 16 is movably mounted on the housing unit 30 about at least one bearing axis 96. Alternatively or additionally, it is conceivable that the flow generation unit 16 is movably mounted on the housing unit 30 along the bearing axis 96. The bearing unit 98 is provided for mounting the flow generation unit 16 on the housing unit 30 about the bearing axis 96. The bearing unit 98 comprises at least one rotary bearing or the like for mounting the flow generation unit 16 on the housing unit 30.The flow generation unit 16 comprises at least one flow generation element 100, which is designed as a fan impeller. An airflow axis 32 of the flow generation unit 16 corresponds to a rotation axis 102 of the flow generation element 100. The flow generation unit 16 is continuously and / or steplessly adjustable in orientation. The orientation of the flow generation unit 16 is adjustable in at least one orientation plane. Alternatively or additionally, it is also conceivable that the flow generation unit 16 is adjustable in at least two degrees of freedom. The orientation of the flow generation unit 16, in particular the orientation of the airflow axis 32, can be adjusted by rotating the flow generation element 100 about the bearing axis 96. The flow generation unit 16 is designed for air output in output mode. The flow generation unit 16 can be operated as a fan.The flow generation unit 16 is designed for air conditioning the ambient air in output mode. It is also conceivable that the flow generation unit 16, in output mode, is designed to blow away contaminated air, dirt, and / or dust from a surface. Furthermore, it is conceivable that the flow generation unit 16, in output mode, is designed for ambient air humidification, fragrance dispensing, or the like. The flow generation element 100 can be used for air output in output mode, wherein the direction of rotation of the flow generation element 100 in output mode is opposite to the direction of rotation of the flow generation element 100 when drawing in ambient air.

[0062] Alternatively or additionally, it is also conceivable that the flow generation unit 16 has at least one further flow generation element, which may in particular be identical to the flow generation element 100. Preferably, the further flow generation element is arranged, and in particular a direction of rotation of the further flow generation element is oriented, such that the further flow generation element can be used for an air output.

[0063] The flow generation unit 16 is arranged on the pivotably mounted housing cover 72 of the housing unit 30. The flow generation unit 16 is at least partially arranged on the housing cover 72 of the housing unit 30. Alternatively or additionally, it is also conceivable that the flow generation unit 16 is at least partially arranged on the base housing 104 of the housing unit 30. The flow generation element 100 is arranged on the housing cover 72 of the housing unit 30, in particular integrated into the housing cover 72. Alternatively, it is conceivable that the flow generation element 100 is arranged on the base housing 104 of the housing unit 30 or integrated into the base housing 104. The housing cover 72 is movably mounted on the base housing 104 of the housing unit 30 about the bearing axis 96 by means of the bearing unit 98, for example by means of a hinge of the bearing unit 98.It is also conceivable that the flow generation unit 16 is at least partially movably mounted on the housing cover 72 or the base housing 104. The airflow axis 32 can be adjusted by moving the housing cover 72 relative to the base housing 104. The control unit 34 is configured to actuate the drive unit 36 ​​to automatically align the flow generation unit 16.

[0064] The modular air purification device 12 comprises at least one adjustable floor clearance unit 38, which is designed to at least partially distance the housing unit 30 of the modular air purification device 12 from a surface. The floor clearance unit 38 is hinged. The floor clearance unit 38 is designed to allow a dust collection container 44 of the dust collection unit 42 to be positioned below the housing unit 30, in particular below the base housing 104, by distancing the housing unit 30 from the surface. The floor clearance unit 38 is arranged on the base housing 104 of the housing unit 30. The floor clearance unit 38 is movably mounted on the housing unit 30, in particular on the base housing 104 of the housing unit 30, by means of the bearing unit 98, for example by means of at least one hinge or the like of the bearing unit 98.It is conceivable that different distances between the housing unit 30 and the ground can be set by adjusting the ground clearance unit 38, in particular continuously or in steps. The ground clearance unit 38 comprises at least two ground clearance elements 106. The ground clearance elements 106 are designed as folding legs. The ground clearance elements 106 are movably mounted on the base housing 104 of the housing unit 30. The housing unit 30 rests on the ground when the ground clearance unit 38 is retracted. The housing unit 30, preferably the base housing 104, has a receiving area 108 for the ground clearance unit 38, which is designed as at least one recess. The receiving area 108 is designed to accommodate the ground clearance unit 38, in particular the ground clearance elements 106, substantially completely when retracted.

[0065] Alternatively, a ground clearance unit 38' of a modular air purification device 12' is also conceivable, which is designed telescopically (cf. Figure 7 ), wherein the ground clearance unit 38' has at least four ground clearance elements 106' designed as telescopic legs. The ground clearance unit 38' preferably has several detent positions 136' for the ground clearance elements 106' in order to adjust the distance of a housing unit 30' of the modular air purification device 12' to a surface.

[0066] The dust collection unit 42 comprises at least one closing element 46, which is designed for at least semi-automatic closing of the dust collection container 44. The semi-automatic closing of the dust collection container 44 by means of the closing element 46 occurs depending on an airflow generated by the flow generation unit 16. The dust collection container 44 has at least one dust collection opening 110 through which dust can be introduced into the dust collection container 44. The dust collection container 44 can be emptied through the dust collection opening 110. The closing element 46 is arranged at the dust collection opening 110 of the dust collection container 44. The closing element 46 is designed as a flap.Alternatively, the closure element 46 could be designed as a shut-off valve or the like. The dust collection container 44, in particular the dust collection container opening 110 of the dust collection container 44, is closed by means of the closure element 46 when no ambient air is being drawn in by the flow generation unit 16. The dust collection container 44, in particular the dust collection container opening 110 of the dust collection container 44, is closed by means of the closure element 46 in the dispensing mode. The dust collection container 44, in particular the dust collection container opening 110 of the dust collection container 44, is not closed, preferably not closed by means of the closure element 46, at least during the extraction of ambient air by the flow generation unit 16. The closure element 46 is movably arranged on the dust collection container 44, in particular mounted.The flow generation unit 16 is designed to apply a force, in particular a fluid force, to the closing element 46 in order to open the dust collection container opening 110 of the dust collection container 44 for air inlet. The closing element 46 is movable relative to the dust collection container opening 110 by means of an airflow generated by the flow generation unit 16. It is conceivable that a return element, for example a spring, a rubber band or the like, is arranged on the closing element 46, which applies a force to the closing element 46 that holds the closing element 46 in a position that closes the dust collection container opening 110 of the dust collection container 44, in particular at least when the flow generation unit 16 is not drawing air or is in output mode.It is also conceivable that the closing element 46 can be held in a state closing the dust collection container opening 110 of the dust collection container 44 solely by gravity, in particular at least in a suction-free state of the flow generation unit 16 or in the output mode.

[0067] The modular air purification system 10 comprises at least one sound reduction unit 40, which is designed to generate sound waves that counteract ambient noise. The sound reduction unit 40 is at least partially formed by the flow generation unit 16. The sound reduction unit 40 is designed to reduce ambient noise for a user within its effective range. Sound waves that counteract ambient noise can be generated by means of the flow generation unit 16, in particular by means of a rotation of the flow generation element 100. It is conceivable that the rotational speed of the flow generation unit 16, in particular of the flow generation element 100, can be adjusted by means of the control unit 34 to generate different sound waves, for example with regard to volume and / or frequency.Preferably, the sound reduction unit 40 comprises at least one acoustic sensor element (not shown) for detecting at least one characteristic, in particular a frequency, a volume, or the like, of ambient noise. Preferably, the sound waves generated by the sound reduction unit 40 are adaptable depending on at least one characteristic of the ambient noise, in particular depending on at least one characteristic of the ambient noise detected by the acoustic sensor element. It is conceivable that a sensor signal detected by the acoustic sensor element can be evaluated by the control unit 34. Alternatively or additionally, it is also conceivable that the sound reduction unit 40 is configured as another sound reduction unit 40 known to a person skilled in the art.

[0068] The dust collection unit 42 comprises at least one bypass 48, which is designed to provide the flow generation unit 16 with at least one airflow path bypassing the dust collection container 44, depending on an operating mode, in particular depending on the output mode. For example, the bypass 48 includes a flap control or the like to provide an airflow path bypassing the dust collection container 44. It is conceivable that the bypass 48 can be controlled by means of the control and / or regulation unit 34. The airflow path does not pass through the dust collection container 44, at least in the output mode. The modular air purification device 12 comprises at least one bypass air inlet 126. The bypass air inlet 126 is arranged on the housing unit 30 of the modular air purification device 30. Ambient air can be drawn in via the bypass air inlet 126 by means of the flow generation unit 16.

[0069] Figure 4Figure 1 schematically shows a flow pattern in output mode. The bypass includes at least one bypass element 128, which is designed as a shut-off flap or the like. The bypass element 128 is designed to either close or open the bypass air inlet 126. Specifically, the bypass element 128 is designed to open the bypass air inlet 126 in output mode. In output mode, the bypass air inlet 126 is open and the dust collection container opening 110 is closed. The dashed arrows represent the direction of airflow in output mode. If the modular air purification device 12 is not in output mode, the bypass air inlet 126 is closed by the bypass element 128.

[0070] Figure 6Figure 1 shows the expansion module 14 in an open state. The expansion module 14 comprises at least one packaging unit 64, which is designed to at least semi-automatically package at least the filter element 66 of the air purification unit 20 of the expansion module 14 in a substantially dust-tight manner, particularly during a filter change. The packaging unit 64 is arranged on the module housing 94 of the expansion module 14. The packaging unit 64 preferably comprises at least one packaging element 116. The packaging element 116 is designed as a plastic bag. The packaging element 116 is designed to hold the filter element 66 during a filter change. The packaging element 116 is arranged relative to the filter element 66 on the module housing 94 such that, when the filter element 66 is removed, the packaging element 116 slides at least partially automatically over the filter element 66.The packaging element 116 is arranged at a module housing opening 118 of the module housing 94, through which the filter element 66 can be removed from and inserted into the module housing 94. The packaging unit 64 is designed to close the packaging element 116 when the filter element 66 is removed, for example, by means of an adhesive strip or the like. It is also conceivable that the packaging unit 64 is designed to coat the filter element 66 with a resin or the like before it is removed from the module housing 94, or to melt the filter element 66 so that its pores are sealed. It is conceivable that used and / or sealed filter elements 66 are recyclable and / or can be used as igniters or the like.

[0071] The filter element 66 of the air purification unit 20 of the expansion module 14 has adjustable filter pores. The filter pores of the filter element 66 are automatically adjustable depending on the flow pressure. Furthermore, it is also conceivable that at least the air purification unit 20 of the expansion module 14 automatically switches between different filter elements for air filtration depending on the ambient dust concentration and / or type detected by the dust detection unit 68. It is also conceivable that the filter pores of the filter element 66 are automatically adjustable depending on the detected ambient dust concentration and / or type.

Claims

1. Modular air cleaning system (10) comprising at least one, in particular toolbox-like, modular air cleaning device (12), comprising at least one, in particular toolbox-like, expansion module (14, 22, 24), wherein the at least one modular air cleaning device (12) has at least one flow generating unit (16), in particular for ambient air intake, and comprising at least one coupling unit (18) for coupling the modular air cleaning device (12) to the at least one expansion module (14, 22, 24), wherein the modular air cleaning device (12) has at least one housing unit (30), on which the flow generating unit (16) is mounted, in particular for adapting an air flow axis (32), with an adjustable orientation, in particular with an adjustable angle, characterized by at least one open-loop and / or closed-loop control unit (34) and at least one drive unit (36), wherein the open-loop and / or closed-loop control unit (34) is designed to control the drive unit (36) for automatically orienting the flow generating unit (16).

2. Modular air cleaning system (10) according to Claim 1, characterized in that the flow generating unit (16) can be operatively connected, in particular in terms of flow, to at least one air cleaning unit (20) of the expansion module (14, 22) by means of the coupling unit (18).

3. Modular air cleaning system (10) according to Claim 1 or 2, characterized in that the coupling unit (18) has at least one poka-yoke element (26) which, for coupling to the expansion module (14, 22, 24), is provided to interact with at least one further poka-yoke element (28) of the coupling unit (18), the poka-yoke element being arranged on the expansion module (14, 22, 24).

4. Modular air cleaning system (10) according to any of the preceding claims, characterized in that the modular air cleaning device (12) has at least one adjustable, in particular foldable and / or telescopic, floor spacer unit (38), which is provided to at least partially space apart at least one housing unit (30) of the modular air cleaning device (12) from an underlying surface.

5. Modular air cleaning system (10) according to any of the preceding claims, characterized in that the flow generating unit (16) has at least one output mode, in which the flow generating unit (16) is provided for air output.

6. Modular air cleaning system (10) according to any of the preceding claims, characterized by at least one sound reduction unit (40), in particular at least partially formed by the flow generating unit (16), which is provided to generate sound waves counteracting an ambient noise.

7. Modular air cleaning system (10) according to any of the preceding claims, characterized by at least one dust collection unit (42) which comprises at least one dust collection container (44) and at least one closure element (46) which is provided for at least partially automatically closing the dust collection container (44), in particular depending on an air flow generated by the flow generating unit (16).

8. Modular air cleaning system (10) according to Claim 7, characterized in that the dust collection unit (42) comprises at least one bypass (48) which is provided to provide at least one air flow path bypassing the dust collection container (44), depending on an operating mode, in particular depending on an output mode, of the flow generating unit (16).

9. Modular air cleaning system (10) according to any of the preceding claims, characterized by at least one, in particular optical, acoustic and / or haptic, user interaction unit (50) which is configured for information input by a user and / or for information output to a user.

10. Modular air cleaning system (10) according to Claim 9, characterized in that the user interaction unit (50) is configured to output at least one notification regarding coupling of the modular air cleaning device (12) to the expansion module (14), in particular a graphical coupling instruction.

11. Modular air cleaning system (10) according to any of the preceding claims, characterized by at least one hose unit (52), in particular couplable to a power tool, and at least one connection unit (54) which is provided to couple the hose unit (52) in terms of flow to the flow generating unit (16) in such a way that the flow generating unit (16) can simultaneously generate a large area of ambient air flow and a directed air flow through the hose unit (52).

12. Modular air cleaning system (10) according to Claim 2, characterized in that the air cleaning unit (20) is designed as a liquid filter (56), wherein the flow generating unit (16) is provided to generate an air flow which drives at least one liquid filter element (58), in particular at least one filter roller (60), of the air cleaning unit (20) to move.

13. Modular air cleaning system (10) according to any of the preceding claims, characterized by a single drive unit (36) which is provided to drive a plurality of flow generating units (134), in particular comprised by different modular air cleaning devices and / or a plurality of expansion modules (14, 22, 24).

14. Modular air cleaning system (10) according to Claim 13, characterized by at least one, in particular adjustable, gear unit (62) which is provided, for implementing different flow properties in different air cleaning regions, to transmit at least one movement variable of the drive unit (36) to a plurality of expansion modules (14, 22) with different transmission ratios.

15. Modular air cleaning system (10) according to any of the preceding claims, characterized by at least one turbine unit (74) which is coupled in terms of flow to the flow generating unit (16) and is provided to influence flow properties of an air flow generated by the flow generating unit (16) differently in different air cleaning regions.

16. Modular air cleaning system (10) according to any of the preceding claims, characterized in that the expansion module (14) has at least one packaging unit (64) which is provided to at least substantially dust-tightly package at least one filter element (66) of at least one air cleaning unit (20) of the expansion module (14) in an at least partially automated manner, in particular when changing a filter.

17. Modular air cleaning system (10) at least according to Claim 2, characterized in that the air cleaning unit (20) comprises at least one filter element (66) which has adjustable filter pores, in particular adjustable automatically depending on a flow pressure.

18. Modular air cleaning system (10) at least according to Claim 2, characterized by at least one dust detection unit (68) which is designed to detect an ambient dust concentration, depending on which the flow generating unit (16) and / or the air cleaning unit (20) can be controlled.

19. Modular air cleaning system (10) at least according to Claim 2, characterized by at least one dust detection unit (68) which is designed to detect types of ambient dust, depending on which the flow generating unit (16) and / or the air cleaning unit (20) can be controlled.

20. Modular air cleaning system (10) according to Claim 18 or 19, characterized in that the dust detection unit (68) is designed without a dust sensor.

21. Modular air cleaning system (10) according to any of the preceding claims, characterized by at least one, in particular wireless, communication unit (70) which is configured for data exchange, in particular with at least one power tool and / or with at least one further modular air cleaning device.

22. Modular air cleaning system (10) according to Claim 21, characterized by at least one open-loop and / or closed-loop control unit (34) which is designed to automatically set an operating mode depending on received power tool data and / or air cleaning device data, in particular to control the flow generating unit (16) and / or at least one air cleaning unit (20) of the expansion module (14, 22).

23. Modular air cleaning system (10) at least according to Claim 2, characterized by at least one, in particular self-learning, open-loop and / or closed-loop control unit (34) which is designed to identify user requirements and to control the flow generating unit (16) and / or the air cleaning unit (20) depending on evaluation of the identified user requirements.