Suction cleaning device

Abstract

To improve a vacuum cleaning device comprising a suction unit which has at least one suction head, one suction unit and one suction guide, it is proposed that in at least one suction head suction position of the suction unit, a suction area on the suction head and the suction unit are fluid-conductingly connected via the suction guide, and that the vacuum cleaning device comprises a control device for the suction unit and at least one pressure sensor, wherein the at least one pressure sensor is effectively connected to the control device and the at least one pressure sensor is effectively connected to a front suction guide section of the suction guide, and the control device controls the suction unit at least partially depending on measurement results of the at least one pressure sensor, in particular controls and / or regulates it.

Description

[0001] The invention relates to a vacuum cleaning device, in particular a hand-held vacuum cleaning device.

[0002] DE 10 2011 006 541 A1 discloses a vacuum cleaner with a suction channel and a pressure sensor provided therein for measuring an actual value of the suction pressure in the suction channel, a suction fan which can be fluidly connected to the suction channel and a control means which controls the power of the suction fan as a function of the measured pressure to a desired value of the suction pressure, wherein the vacuum cleaner has means for adjusting the desired value of the suction pressure.

[0003] DE 10 2008 010 068 A1 discloses a device for automatically regulating the suction power of a vacuum cleaner whose motor / blower unit is driven by an associated electrical or electronic control circuit and whose dust separation unit is preceded by a suction nozzle. A first pressure sensor, together with the control circuit, forms a first control circuit for detecting a negative pressure generated by the motor / blower unit and applied to the dust separation unit. The first control circuit maintains the negative pressure applied to the dust separation unit at a predetermined value based on the signal from the first pressure sensor. A second pressure sensor is provided for detecting a negative pressure applied to the suction nozzle. This second control circuit, together with the control circuit, maintains the negative pressure applied to the suction nozzle below a predetermined value based on the signal from the second pressure sensor.

[0004] US 2019 / 0365177 A1 discloses an upright vacuum cleaner.

[0005] The KR 2005-0075181 A also discloses a vacuum cleaner.

[0006] EP 1 997 412 B1 discloses a method for operating a vacuum cleaner with a control device acting on a blower motor, which control device specifies the motor power or a parameter influencing the motor power as a manipulated variable, wherein the flow generated by a suction fan is influenced as a controlled variable by the control device.

[0007] The object underlying the invention is to improve a vacuum cleaning device.

[0008] In embodiments of the invention, the underlying object is achieved by a vacuum cleaning device with a suction device which has at least one suction head, a suction unit and a suction guide, wherein in at least one suction head-suction position of the suction device, a suction area on the suction head and the suction unit are fluidly connected by the suction guide, and wherein the vacuum cleaning device comprises a control device for the suction unit and at least one pressure sensor, wherein the at least one pressure sensor is connected to the control device in a signal-effective manner and the at least one pressure sensor is connected to a front suction guide section of the suction guide in a sensor-effective manner, and the control device controls the suction unit at least partially depending on measurement results of the at least one pressure sensor,In particular, the control device controls the suction unit in at least one control mode and / or the control device regulates the suction unit in at least one control mode.,

[0009] In particular, a benefit of the solution according to the invention is that the pressure sensor, through the sensor-effective connection to the front suction guide section, can measure a pressure in the suction guide that is at least similar to the pressure in the suction area of ​​the suction head. Thus, the control device can control the suction unit such that the desired pressure is at least approximately present in the suction area. This is particularly advantageous because it prevents excessive negative pressure from being present in the suction area, which would make it excessively difficult to guide the suction head over a surface to be cleaned, and / or prevents a sufficiently large negative pressure from being present to vacuum up dirt particles.

[0010] For example, the suction head will adhere to different surfaces to be cleaned to varying degrees. For example, with a constant suction power of the suction unit, on a surface where the suction head adheres well, too strong a negative pressure may arise and the suction head will be difficult to move over the surface to be cleaned. On the other hand, on an uneven surface, for example, a higher suction power may be required to create a sufficiently large negative pressure to thoroughly clean such a surface. Therefore, controlling the suction unit depending on the pressure in the front suction guide section is advantageous in order to achieve a favorable suction pressure with which, for example, the suction head can be guided well over the surface to be cleaned and which ensures thorough cleaning.

[0011] In particular, the suction unit comprises at least one motor and / or an impeller for sucking in a fluid, in particular air.

[0012] In some advantageous embodiments, the suction device has different positions.

[0013] Preferably, the control device has different control modes.

[0014] In particular, different operating modes differ at least by different positions of the suction device and / or different control modes of the control device.

[0015] Conveniently, the vacuum cleaning device is provided with different operating modes.

[0016] Advantageously, the suction unit generates a suction flow in the suction guide that flows in a flow direction toward the suction unit.

[0017] At least in the suction head extraction position of the suction device, the extraction area is connected to the suction unit in a fluid-conducting manner, so that the extraction area is captured by the suction flow and fluid, in particular air, and advantageously dirt particles are extracted in the extraction area and sucked into the suction unit.

[0018] It is particularly advantageous if the front suction guide section is located in a front half of the suction guide and in particular the front suction guide section is located in a front third of the suction guide.

[0019] Here, the front half and / or the front third of the suction guide is related to the extension of the suction guide from the suction area to the suction unit.

[0020] Advantageously, the front suction guide section extends from the suction area towards the suction unit.

[0021] In particular, the at least one pressure sensor is connected to a measuring section of the suction guide and the measuring section is located in the front suction guide section.

[0022] Preferably, a collection region for sucked-in particles is formed in the suction guide. Preferably, a collection container for the sucked-in particles can be arranged in the collection region, and during proper operation of the vacuum cleaning device, the collection container is arranged in the collection region.

[0023] In particular, it is provided that the suction unit and / or a collection region for sucked-in particles is formed in a rear suction guide section of the suction guide and that the front suction guide section is located in front of the rear suction guide section with respect to the suction direction in the suction guide.

[0024] Advantageously, the pressure sensor is connected to the suction guide in a sensor-effective manner upstream of the suction unit and preferably upstream of the collection region, so that even an accumulation of collected particles in the collection region does not impair the pressure measurement of the at least one pressure sensor and the measured pressure corresponds at least more accurately to the pressure in the suction region.

[0025] In advantageous embodiments, the suction guide has at least one removable suction part and a connection for the removable suction part.

[0026] Advantageously, the suction device can thus be moved into at least one suction head suction position when the removable suction part is connected to the connection, and the suction unit can be moved into at least one suction part suction position when the removable suction part is not connected to the connection, so that advantageously with the removable suction part in this at least one suction part suction position, for example, a specific location can be flexibly vacuumed.

[0027] Advantageously, the at least one pressure sensor is connected to a suction guide section in a sensor-effective manner in relation to the suction direction in the suction guide upstream of the connection.

[0028] Thus, on the one hand, the at least one pressure sensor is advantageously located sufficiently close to the suction area on the suction head in order to measure the pressure there sufficiently effectively and, on the other hand, due to the sensor-effective connection of the at least one pressure sensor in front of the connection, the pressure sensor can detect that the removable suction part is not connected to the connection, since no suction flow flows through the measuring section and thus no corresponding negative pressure is generated.

[0029] In particular, at least one of the following is provided: that the connection for the at least one removable suction part is formed, with respect to the suction direction in the suction guide, on a section of the suction guide leading to the suction head and in particular to the suction extraction region; and / or that the front suction section is located in front of the connection, with respect to the suction direction in the suction guide, and / or that the front suction guide section extends from the suction extraction region to the connection; and / or that a suction part guide section of the suction guide is formed in the at least one removable suction part, and a connection counterpart for connecting to the connection is formed at a suction end of the suction part guide section, and a suction end of the suction part guide section is fluidly connected to a section of the suction guide leading to the suction unit, in particular to the rear suction guide section;and / or that in at least one suction head suction position of the suction guide, in which the at least one removable suction part is connected to the connection, in particular to its connection counterpart, the suction area on the suction head is connected to the suction unit in a fluid-conducting and in particular suction-absorbing manner, and in at least one suction part suction position of the suction device in which the at least one removable suction part is not connected to the connection and is separated from it, the suction area on the suction head is not connected to the suction unit in a suction-absorbing manner.

[0030] Advantageously, a location can be vacuumed with the suction end of the removable suction part, the suction end of which is connected to the suction unit in a fluid-carrying manner.

[0031] In particular, the suction guide section is located in a central suction guide section. The central suction guide section is located between the front suction guide section and the rear suction guide section with respect to a suction direction in the suction guide.

[0032] Preferably, the removable suction part is designed to be flexible in shape at least in sections, so that a user can move this suction part favorably to a location to be vacuumed with the removable suction part and can, for example, partially bend the removable suction part for this purpose.

[0033] Advantageously, the removable suction part is designed to be rigid at least in sections, so that, for example, a user can hold the removable suction part well on the rigid section and, for example, with a rigid section, can direct the suction part with its suction end to a location to be vacuumed.

[0034] In particular, the removable suction part is designed to be rigid in sections, at least starting from the suction end.

[0035] In some advantageous embodiments, the at least one pressure sensor is connected in a sensor-effective manner to a section of the suction guide which is formed in the suction head.

[0036] In particular, one advantage of a measuring section located in the suction head is that the pressure sensor measures the pressure close to the suction area, and thus the pressure in the suction area can be adjusted particularly favorably by controlling the suction unit.

[0037] In some advantageous embodiments, the at least one pressure sensor is connected in a sensor-effective manner to a section of the suction guide which is located in a device housing of the vacuum cleaning device.

[0038] For example, one advantage of a measuring section located in the device housing is that the measuring section is protected in the device housing and, for example, a sensor-effective connection to the pressure sensor can be installed in a protected manner in the device housing.

[0039] Advantageously, the suction head forms a suction chamber.

[0040] The suction area is located near the suction chamber and a section of the suction guide leads away from the suction chamber carrying fluid.

[0041] In particular, the suction chamber opens towards the suction area.

[0042] In particular, at least one of the following is provided for: that the at least one pressure sensor is connected in a sensor-effective manner to the section of the suction guide leading away from the suction chamber; and / or that the section of the suction guide leading away from the suction chamber is formed at least up to a central suction guide section; and / or that the section of the suction guide leading away from the suction chamber is formed up to the connection.

[0043] Advantageously, the pressure sensor in the section leading away from the suction chamber can, on the one hand, conveniently measure a pressure that is at least similar to the pressure in the suction area, and, on the other hand, a sensor-effective connection in this section leading away is protected, for example, from possible harmful interventions that may occur in the suction area.

[0044] In favorable embodiments, at least one of the following is provided: that the at least one pressure sensor is arranged at a distance from the suction guide; and / or that a pressure line connects the at least one pressure sensor to the suction guide, in particular to the front suction guide section, in a sensor-effective manner, wherein in particular a suction flow in the suction guide at least substantially does not flow through the pressure line.

[0045] For example, one advantage of this is that the at least one pressure sensor can be arranged at a location that is convenient for it and can still be connected to the suction guide in a sensor-effective manner.

[0046] For example, one advantage is that the pressure sensor can be arranged at a distance from the suction guide so that it is protected from, for example, larger interfering objects in the suction guide.

[0047] In particular, the vacuum cleaning device has at least one device housing.

[0048] In particular, at least one of the following is provided for: that the suction head is arranged on the at least one device housing and is in particular pivotably arranged; and / or that at least one of the suction unit and / or the collection region and / or the control device is arranged in the at least one device housing.

[0049] In particular, one advantage of this is that the suction head, which is preferably pivotably arranged on the device housing, enables favorable suction in the suction area of ​​the suction head in the suction head extraction position, since the preferably pivotable arrangement of the suction head allows it, together with the extraction area, to be favorably aligned with a surface to be vacuumed.

[0050] Advantageously, the suction unit and / or the collection region and / or the control device are arranged in a protected manner in the device housing.

[0051] For example, in some embodiments, the at least one pressure sensor is arranged on the suction head.

[0052] For example, one advantage of this is that the pressure sensor is not arranged too far away from a measuring section that is conveniently located in the suction head.

[0053] In some advantageous embodiments, the pressure sensor is arranged in the device housing.

[0054] A particular advantage of this is that the pressure sensor is protected in the device housing and can be conveniently arranged, for example, at least close to other technical units.

[0055] It is particularly advantageous if the pressure sensor is arranged at least at the control device and in particular is arranged on at least one control element of the control device.

[0056] A particular advantage of this is that electronic components for the control system are arranged close together. For example, this makes it possible to pre-assemble an assembly with the control device and the at least one pressure sensor, and preferably install this pre-assembled assembly in the device housing. After that, for example, only the pressure sensor needs to be connected to the measuring section of the suction line, for example, by routing the pressure line.

[0057] In particular, the value measured by the at least one pressure sensor is used in the control device to determine a parameter value on the basis of which the control, for example the control and / or regulation, of the suction units takes place.

[0058] In particular, the value measured by the pressure sensor and / or the parameter value is a differential pressure to a reference pressure value and / or a negative pressure in the intake area.

[0059] In advantageous embodiments, the at least one pressure sensor measures a measured variable which is at least indicative of a differential pressure to a reference pressure, wherein in particular the reference pressure is an ambient pressure in the environment of the vacuum cleaning device; and / or the reference pressure is a pressure in a measuring section of the suction guide when the measuring section is not subjected to a suction flow.

[0060] Advantageously, the control device can thus control the suction unit depending on the differential pressure and advantageously suction is improved in particular in the suction area.

[0061] In particular, by determining the differential pressure relative to the reference pressure, it can be determined whether a suction flow flows through the suction guide section located in front of the connection and thus whether the suction device is in a suction head suction position or in another position, in particular a suction part suction position.

[0062] In advantageous embodiments, it is provided that the control device reduces a suction power of the suction unit at at least one pressure threshold value, in particular at an excessively high negative pressure, for example at the suction area.

[0063] In particular, at least one of the following is provided for: that, at least one pressure threshold value, the control device reduces a rotational speed of the suction unit, for example a rotational speed of the suction motor and / or a rotational speed of the impeller of the suction unit; and / or that, at least one pressure threshold value, the control device reduces a current supplied to the suction unit.

[0064] A particular advantage of this is that a negative pressure, particularly in the extraction area and / or at another point along the suction line and / or at another point to be vacuumed, does not become excessive. For example, excessive negative pressure in the extraction area and / or at a point to be vacuumed is disadvantageous, as this can impede the movement of the suction head over a surface to be cleaned. For example, excessive negative pressure in the suction line can lead to damage to the suction line.

[0065] In some advantageous embodiments, at least one target pressure range is provided, and in at least one control mode, the control device controls the suction unit such that the pressure measured by the at least one pressure sensor remains at least substantially within the at least one target pressure range. In particular, the control device regulates the suction unit using at least one control algorithm such that the measured pressure remains within the target pressure range.

[0066] Advantageously, suctioning becomes more comfortable for a user because the pressure during suction remains within the target pressure range.

[0067] In particular, this allows a pressure range to be controlled that is advantageous for thorough suction.

[0068] In advantageous embodiments, at least one pressure switching value is provided and in at least one control mode the control device carries out at least one control action when the pressure switching value is reached.

[0069] For example, the control device controls a suction power of the suction unit to a high power in at least one control mode when a pressure switching value is reached.

[0070] For example, this is advantageous for a vacuum cleaning device whose suction unit also has at least one suction-part extraction position. The suction unit is advantageously controlled at high power when the suction unit is in the suction-part extraction position. In particular, the removable suction unit, with its high suction power, allows the area to be vacuumed extremely thoroughly.

[0071] In particular, the high power is a power which is at least as high as a power which is provided in a control mode for the at least one suction head suction position.

[0072] Advantageously, the high power is at least equal to and advantageously greater than high powers which are controlled in the suction head extraction position, for example equal to or greater than at least 80% of the highest power in the suction head extraction position and advantageously equal to or greater than the absolute highest power in the suction head extraction position.

[0073] Advantageously, the high power lies within a maximum power range for the suction unit. For example, the high power is at least 60%, preferably at least 70%, and advantageously at least 80% of the maximum intended controllable power for the suction unit.

[0074] In some embodiments, the maximum intended maximum power to be controlled for the suction unit is the maximum permissible suction power of the suction unit.

[0075] In some preferred embodiments, the maximum power to be controlled is lower than the maximum permissible suction power of the suction unit. This prevents, for example, excessive strain on the suction unit.

[0076] For example, the maximum intended maximum power to be controlled is at least 60% and, for example, at least 70% of the maximum permissible suction power of the suction unit.

[0077] A wide variety of control algorithms and / or regulation algorithms can be used in the control modes.

[0078] In advantageous embodiments, at least in one control mode, a control algorithm with at least one proportional component and / or one integrating component and / or one differentiating component, i.e. a P and / or an I and / or a D and / or a PI and / or a PD and / or an ID and / or a PID controller, is used by the control device to control the suction unit.

[0079] This advantageously enables particularly favorable control of the suction unit.

[0080] In advantageous embodiments, the measuring signals of the at least one pressure sensor are used to control further units of the vacuum cleaning device.

[0081] This is particularly advantageous in order to use the existing measurement results for further adjustments for improved suction.

[0082] This is particularly advantageous in order to save elements, since the measurement results of at least one pressure sensor control different units.

[0083] For example, the vacuum cleaning device comprises a brush unit with brushes on the suction head. In particular, the brushes are mounted so as to rotate around a rotation axis. For example, a brush motor is provided to drive the brushes in rotation. For example, the brushes can be positioned in different positions, for example, a cleaning position in which the brushes are in contact with a surface to be cleaned, and a rest position in which the brushes are spaced from the surface to be cleaned.

[0084] Advantageously, the brush unit is controlled at least partially depending on the measurement results of the at least one pressure sensor.

[0085] For example, the brush motor is controlled at least partially depending on the measurement results of the at least one pressure sensor. For example, the speed of the brush motor is at least reduced and / or the brush motor is stopped if the measurement results of the at least one pressure sensor indicate, in particular by reaching a pressure switching value of the measured pressure, that the suction device is in a suction-part extraction position.

[0086] For example, the position of the brushes is controlled at least partially depending on the measurement results of the pressure sensor. For example, the brushes are controlled to the rest position when the measurement results of at least one pressure sensor detect that the suction device is in a suction-part extraction position, in particular when a pressure switching value of the measured pressure is reached.

[0087] In favorable embodiments, the vacuum cleaning device is a handheld device, in particular with at least one handle.

[0088] In particular, the handle is arranged at an opposite end to the suction head in an extension direction of the vacuum cleaning device.

[0089] In the above and below, it is to be understood in particular that, for example, deviations of up to ±20%, preferably of up to ±10%, for example of up to ±5%, are included and / or that the feature is at least substantially provided for, in the case of features that are at least approximately provided.

[0090] In the above and below, it is to be understood in particular that, in the case of features that are at least essentially provided, deviations that are technically caused and / or not technically relevant are included and / or that deviations of up to ±5% are included.

[0091] Above and below, elements and features which are described as being provided for example and / or in particular and / or preferably and / or advantageously and / or preferably and / or in variants and / or the like are optional features which, for example, represent inventive developments but are in particular not absolutely necessary for the success of the basic inventive solution.

[0092] Preferred embodiments and features of the invention and, for example, advantages thereof are the subject of the following detailed description and the drawing of an embodiment in different variants.

[0093] The drawing shows: Figure 1: Views of an embodiment of a vacuum cleaning device; Figure 2: a sectional view of the embodiment of the vacuum cleaning device; Figure 3: a partially enlarged view of the sectional view according toFigure 2 ; Figure 4: the embodiment of a vacuum cleaning device in a suction part suction position of its suction device; Figure 5: a schematic representation of a vacuum cleaning device of an embodiment; Figure 6: a diagram of a control of a suction unit of a vacuum cleaning device.

[0094] An embodiment of a vacuum cleaning device designated as a whole by 100 comprises a suction device 110 with a suction unit 112.

[0095] An exemplary embodiment of a vacuum cleaning device 100 is shown in the Figures 1 to 4 shown. In the Figure 5 An example diagram of a vacuum cleaning device 100 is shown.

[0096] The suction unit 112 advantageously comprises a suction fan with a motor and an impeller.

[0097] The suction device 110 comprises a suction head 116 and a suction guide 118, wherein a suction area 122 on the suction head 116 is connected via the suction guide 118 to the suction unit 112 in at least one suction head suction position of the suction device 110 in a fluid-conducting and suction-absorbing manner. This position is shown by way of example in the Figures 1 , 2 , 5 shown.

[0098] In particular, the suction unit 112 sucks in a suction flow 123 of a fluid, in particular air, in the suction guide in a suction direction 125, so that the suction flow flows in the suction direction 125.

[0099] In particular, a suction chamber 126 is formed in the suction head 116, which opens on one side to the suction area 122. A section of the suction guide 118 in the suction head 116 leads away from the suction chamber 126.

[0100] In particular, the vacuum cleaning device 100 is a floor cleaning device. The suction head 116 is designed to move over a floor to be cleaned, with the suction chamber 126 opening toward the floor to be cleaned, so that the suction area 122 is located at least adjacent to the floor.

[0101] In some inexpensive variants, the suction head 116 is designed to glide over a floor to be cleaned.

[0102] In some advantageous embodiments, rollers 132 are rotatably mounted on the suction head 116 so that the suction head 116 can roll over the floor.

[0103] For example, the vacuum cleaning device 100 has, in particular, rotatably mounted brushes on the suction head 116. For example, the brushes can be adjustably fixed in different positions. For example, in at least one cleaning position of the brushes, they are arranged such that they come into contact with a surface to be cleaned located in the suction area 122. For example, a rest position of the brushes is also provided, in which the brushes are spaced apart from a surface located in the suction area 122. In some advantageous variants, a brush motor is provided, which can drive the rotatably mounted brushes in rotation about their axis of rotation.

[0104] In particular, the vacuum cleaning device 100 comprises a device housing 136. In particular, at least the suction unit 112 is arranged in the device housing 136.

[0105] Advantageously, the suction head 116 is connected to the device housing 136.

[0106] In some inexpensive variants, the suction head 116 is mounted directly on the device housing 136, preferably pivotably, as shown for example in a variant in the Figures 1 , 2 and 4 is shown.

[0107] In some inexpensive variants, the suction head 116 is indirectly mounted on the device housing 136.

[0108] For example, the vacuum cleaning device 100 is a rod cleaning device comprising a rod body, and the device housing 136 and the suction head 116 are mounted on the rod body. Preferably, the suction head 116 is pivotally mounted on the rod body. In some variations, the rod body is, for example, a support rod. In some variations, the rod body is a hollow rod, and its hollow space forms at least a portion of the suction guide 118.

[0109] In particular, the vacuum cleaning device 100 is a hand-held cleaning device which is to be guided by a user by hand, in particular over a floor or another surface to be cleaned.

[0110] Advantageously, the vacuum cleaning device 100 has a handle device 142 with at least one handle 144.

[0111] In particular, the handle 144 is mounted with parts of the handle device 142 on the device housing 136.

[0112] For example, in some variants, the rod body is at least a part of the handle device 142 and, advantageously, the handle 144 is formed at one end, in particular at a distal end, of the rod body.

[0113] For example, the vacuum cleaning device 100 extends in an extension direction 148. Advantageously, the gripping device 142, in particular with the handle 144 on the one hand, and the suction head 116 on the other hand, are formed at opposite ends of the vacuum cleaning device 100 in the extension direction 148.

[0114] In particular, the handle device 142 is designed with the at least one handle 144 in order to guide the vacuum cleaning device 100 over a surface to be cleaned, for example a floor to be cleaned.

[0115] In particular, the vacuum cleaning device 100 comprises an energy supply device 152 for supplying at least the suction unit 112 and in particular other units and / or technology with energy, in particular electrical energy.

[0116] In some advantageous variants, the vacuum cleaning device 100 is a corded device. The power supply device 152 comprises at least one cable. If the cable is connected to a power outlet, the technology of the vacuum cleaning device 100 can be supplied with power via this cable and the power supply device 152.

[0117] In some advantageous variants, the vacuum cleaning device 100 comprises an energy storage device 154 for electrical energy, in particular a battery and / or a rechargeable battery. The energy from the energy storage device 154 can be used to supply at least the suction unit 112 and in particular other units and / or technology of the vacuum cleaning device 100 with energy, in particular with electricity, via the energy supply device 152.

[0118] Preferably, the energy supply device 152 is arranged at least partially on and / or in the device housing 136.

[0119] For example, the device housing 136 has a recess 156 in which the energy storage device 154 can be arranged and can be connected to the energy supply device 152 in a way that transmits energy.

[0120] The vacuum cleaning device 100 comprises a control device 162 at least for controlling the suction unit 112.

[0121] In particular, the control device 162 comprises at least one control element 164, in particular an electrical control element 164, and control components programmed, for example, as a computer program product. For example, at least one control element 164 is advantageously a circuit board with at least one processor and / or at least one integrated circuit.

[0122] Conveniently, the suction device 110 comprises a collection region 172 for sucked-in particles, in particular for dirt particles sucked in via the suction guide 118. Preferably, a collection container 174, in particular a collection container 174 formed at least partially with a filter, can be arranged in the collection region 172. During proper use of the vacuum cleaning device 100, the collection container 174 is arranged in the collection region 172 so that a suction flow sucked in by the suction unit 112 flows through the collection container 174, and sucked-in particles are at least partially collected in the collection container 174 and at least largely filtered out of the suction flow.

[0123] Conveniently, the collection region 172 is formed in the device housing 136.

[0124] In advantageous variants, the suction device 110 comprises a removable suction part 186, which forms a suction part guide section 187 of the suction guide 118, and a connection 188 of the suction guide 118.

[0125] Advantageously, the removable suction part 186 is designed to be flexible in shape, at least in sections, for example by means of a flexible suction hose 192.

[0126] Advantageously, the removable suction part 186 is at least partially rigid, for example by a rigid suction pipe 194.

[0127] The removable suction part 186 comprises a connection counterpart 196, with which the suction part guide section 187 of the removable suction part 186 can be connected to the connection 188 in a fluid-conducting manner in a connected position, in particular a suction head suction position, of the suction device 110. This position is shown by way of example in the Figures 1 , 2 , 5 shown.

[0128] In at least one suction part extraction position, the removable suction part 186 is not connected to the connection 188 and, for example, a specific location can then be flexibly and specifically extracted using the removable suction part 186.

[0129] With a suction end 214, the suction part guide section 187 is fluid-conductingly connected to a section of the suction guide 118, which leads to the suction unit 112.

[0130] In particular, the collection region 172 is arranged between the suction unit 112 and the suction end 114 of the removable suction part 186.

[0131] The removable suction part 186 has a suction end 216 at the suction part guide section 187, on which in particular the connection counterpart 196 is formed.

[0132] With respect to a suction direction of a suction flow, the suction end 216 is formed in front of the suction end 214, so that the suction flow sucked in by the suction unit 112 flows into the suction part guide section 187 at the suction end 216 and flows through the suction part guide section 187 to the suction end 114 and from there flows further to the suction unit 112.

[0133] In some advantageous variants, the connection 188 for the removable suction part 186 is arranged on the suction head 116, as shown by way of example for a variant in Figure 1 is shown.

[0134] In some variants, the suction section 128 in the suction head 116 is adjoined by a further section of the suction guide 118, wherein the further section is formed in the device housing 186, and the connection 188 is formed in the device housing 136, as in the schematic representation in the Figure 5 is shown as an example for a variant. The Figure 5However, the scheme shown is at least substantially the same for a variant in which the connection 188 is formed at the suction head 116, so that the scheme of the Figure 5 is also representative of such variants.

[0135] The suction guide 118 thus comprises at least one front suction guide section 232, which leads away from the suction region 122 in the flow direction, and at least one rear suction guide section 234, in which the suction unit 112 and, for example, the collection region 172 is / are formed.

[0136] In particular, the suction guide 118 has at least one central suction guide section 236, which, with respect to the flow direction in the suction guide 118, is located between the front suction guide section 232 and the rear suction guide section 234. In particular, the removable suction part 186 is formed in the central suction guide section 238.

[0137] In particular, a pressure sensor 252 is provided, which is connected to the suction guide 118, preferably to the front suction guide section 132, in a sensor-effective manner, and the pressure sensor 252 is connected to the control device 162 in a signal-effective manner for transmitting measurement results of the pressure sensor 252.

[0138] Advantageously, the pressure sensor 252 is arranged at a distance from the suction guide 118 and a pressure line 254 opens into the suction guide 118 and leads to the pressure sensor 252.

[0139] Conveniently, the pressure sensor 252 measures the pressure in the fluid in the pressure line 254 in a section of the pressure line 254 arranged at the pressure sensor 252, wherein the fluid is in particular air.

[0140] In particular, the pressure line 254 is a separate line from the suction guide 118 and the suction flow flows at least substantially past the pressure line 254, in particular past the junction of the pressure line 254 with the suction guide 118.

[0141] In particular, the pressure line 254 is a hollow line in whose cavity there is a fluid, in particular air, and through the fluid a pressure which prevails at the confluence of the pressure line 254 with the suction guide 118 is transmitted to the section of the pressure line 154 at the pressure sensor 252.

[0142] In some advantageous variants, the pressure line 254 opens into the section 128 of the suction guide 118, which is formed in the suction head 116, as shown by way of example for a variant in the diagram of the Figure 5 is shown.

[0143] In some variants, the pressure line 254 opens into the suction guide 118 in a section of the front suction guide section 232 located in the device housing 136, as shown by way of example for a variant in the Figure 3 is shown.

[0144] Accordingly, in the variants shown, the pressure line 254 could also open into another section of the front suction guide section 232, which is located in particular in the suction head 116 and / or in the device housing 136, so that the representation in these figures is also representative of such variants.

[0145] For example, in some variants, the pressure sensor 252 is arranged in the suction head 116.

[0146] Advantageously, the pressure sensor 252 is arranged in the device housing 136. Advantageously, the pressure sensor 252 is arranged at least near the control device 162 and in particular on a control element 164. For example, the pressure sensor 252 is arranged on a circuit board of the control device 162.

[0147] In particular, the control device 162 controls the suction unit 112 at least partially depending on the measured pressure values ​​GD of the pressure sensor 252. Depending on the variant and, for example, depending on the control mode, the control device 162 controls the suction unit 112 and / or the control device 162 regulates the suction unit 112.

[0148] In particular, the pressure value GD measured by the pressure sensor 252 is a differential pressure to a reference pressure.

[0149] In a favorable control mode of the control device 162, it is checked whether the measured pressure value GD exceeds at least one pressure threshold value DS and if the measured pressure value GD exceeds the at least one pressure threshold value DS, a control action is carried out.

[0150] In particular, the measured pressure value GD is a negative pressure relative to a reference pressure, and the control action is triggered when the negative pressure is too high. For example, the reference pressure is an ambient pressure and / or a pressure of the air in the suction area 122 when this suction area 122 is not in contact with a surface and / or a pressure in the measuring section when it is not subjected to a suction flow.

[0151] In some variants of this control mode, a speed of in particular an impeller and / or a motor of the suction unit 112 and / or a power delivered to the suction unit 112 is reduced.

[0152] In some simple variants of this control mode, the control action, in particular the reduction of the speed and / or the power, is carried out until the measured pressure value GD is below the pressure threshold value DS.

[0153] In some advantageous variants, a more complex control, in particular a more complex control, is carried out so that the measured pressure value GD is reduced to at least a pressure range below the pressure threshold value DS.

[0154] In particular, the more complex control, in particular the more complex control, is designed to reduce, for example to control, the pressure at least below the pressure threshold value and, for example, into a pressure range below the pressure threshold value DS.

[0155] In some advantageous variants of a control mode, the control device 162 controls the suction unit 112 such that the measured pressure value GD is maintained in a pressure range between a first pressure threshold value DS1 and a second pressure threshold value DS2.

[0156] In particularly preferred variants, a control algorithm with at least one proportional component and / or one integrating component and / or one differentiating component is used, thus, for example, a P, I, D, PI, PD, ID, and / or PID controller is used.

[0157] In some variants, the suction unit 112 is controlled so that the measured pressure value GD deviates from a target pressure DZ by at most a small tolerance deviation, for example.

[0158] In some advantageous variants, a negative pressure as pressure threshold value DS, which should not be exceeded, is 25 mbar, so that if the negative pressure becomes greater than 25 mbar, the control device 162 controls the suction unit 112 with at least one control action.

[0159] In some advantageous variants, a negative pressure is defined as the pressure threshold DS, which should not be exceeded, at least approximately 105 mbar. For example, it is intended to control the suction unit 112 such that the pressure value GD measured as the negative pressure is between 95 mbar and 105 mbar.

[0160] For example, higher pressure threshold values, such as the pressure range between 95 mbar and 105 mbar negative pressure, are provided for corded vacuum cleaning devices 100.

[0161] For example, a pressure threshold value DS for a vacuum cleaning device 100 powered by an energy storage device is lower, for example 25 mbar.

[0162] In at least one advantageous control mode, a pressure switching value DT is provided and if the measured pressure value GD is at least approximately equal to the pressure switching value DT, the control unit 162 carries out at least one control device.

[0163] Advantageously, the pressure switching value DT corresponds at least substantially to an ambient pressure and / or a pressure at the suction region 122 when the suction region 122 is not subjected to a suction flow.

[0164] If the vacuum cleaning device 100 is switched on and if the pressure value GD measured by the at least one pressure sensor 252 between the suction area 122 and the connection 188 at least approximately corresponds to the pressure switching value DT, this is indicative that the removable suction part 186 has been removed from the connection 188 and the suction device 110 is in the suction part suction position.

[0165] In particular, if the measured pressure value GD at least approximately corresponds to the pressure switching value DT, a control action is to increase the suction unit 112 to a high power level and, for example, to a maximum adjustable power level. For example, the high power level and / or the maximum adjustable power level is at least 60% and, in particular, at least 75% of the maximum permitted power level for the suction unit 112.

[0166] In particular, a control action, in particular when the measured pressure value GD at least approximately corresponds to the pressure switching value DT, is that the brush device is controlled and in particular a speed and / or power of the brush motor is at least reduced and / or that the brush motor is stopped and / or that the brushes are positioned in a rest position.

[0167] In particular, an operating device 262 with at least one operating element is provided.

[0168] Conveniently, at least one operating element is arranged on the handle device 142.

[0169] For example, at least one control element is a switch and / or button and / or control knob.

[0170] In particular, the operating device 262 can be used to at least partially operate the vacuum cleaning device 100, in particular to set adjustable parameters, such as at least one of the pressure threshold values ​​DS, DS1, DS2 and / or at least one pressure switching value DT for at least one control mode of the control device 162.

[0171] Advantageously, the vacuum cleaning device 100 comprises at least one output device 272 with at least one output unit.

[0172] In particular, at least one output unit is an optical output unit, for example a light source and / or a display.

[0173] For example, at least one output unit is an acoustic output unit, for example a loudspeaker.

[0174] In some inexpensive variants, at least one unit is a combination of a control element and an output unit, for example a touchscreen.

[0175] In some inexpensive variants, at least one control element and / or one output unit is an interface for a data transmission connection. For example, at least one interface is a Bluetooth and / or WLAN interface.

[0176] Via the interface, a user can connect an external device, in particular an external communications terminal, such as a smartphone, to the vacuum cleaning device 100, for example at least to the control device 162, for data transmission. Advantageously, the user can thus at least partially operate the vacuum cleaning device 100 via the external device and / or have output signals output via the external device.

[0177] In particular, advantageous embodiments and functionalities of a vacuum cleaning device 100 and exemplary advantages thereof are briefly summarized as follows.

[0178] The vacuum cleaning device 100 comprises the suction device 110 with the suction unit 112.

[0179] At least in one position of the suction device 110, in particular in a suction head suction position, a suction area 122 of the suction head 116 of the vacuum cleaning device 100 is fluid-conductingly connected to the suction unit 112 through the suction guide 118, and in an activated operating mode, the suction unit 112 sucks air from the suction area 122 through the suction guide 118.

[0180] For example, a removable suction part 186 is formed in the suction guide 118, in particular in the central suction guide section 234.

[0181] At a suction end 214, the suction part guide section 187 of the removable suction part 186 is fluidly connected to the suction unit 112. At the suction end 216, the removable suction part 186, and in particular its suction part guide section 187, has a connection counterpart 196 with which the removable suction part 186 can be connected to the connection 188 of the suction device 110. The connection 188 is fluidly connected to the suction area 122 on the suction head 116 by a partial section of the suction guide 118.

[0182] If the removable suction part 186 is not connected to the connection 188, suction can be performed directly at the suction end 116 of the removable suction part 186 in this suction part suction position of the suction device 110.

[0183] The control device 162 is provided for at least partial control of the suction unit 112.

[0184] In particular, the pressure sensor 252 is provided, which is connected in a sensor-effective manner to the front suction guide section 132 of the suction guide 118 and is connected in a signal-effective manner to the control device 162.

[0185] Conveniently, the pressure sensor 252 is arranged at a distance from the suction guide 118 in the suction head 116 and / or in the device housing 136. Preferably, the pressure sensor 252 is arranged at least near the control device 162.

[0186] Advantageously, the pressure sensor 252 is connected to the suction guide 118 in a sensor-effective manner by a pressure line 254, particularly in its front suction guide section 132.

[0187] In particular, an advantage of the pressure measurement by the pressure sensor 252 in the front suction guide section 132 is that a pressure in the suction area 122 of the suction head 116 can be measured more precisely and by transmitting the measurement result of the pressure value measurement, the control device 162 can control the suction unit 112 more specifically in order to achieve a desired pressure, in particular a desired negative pressure, in the suction area 122.

[0188] Advantageously, the pressure in the suction area 122 can be adjusted more precisely and a user can thereby better guide the suction head 116 over a surface to be cleaned.

[0189] In particular, by measuring the pressure in a section of the suction guide 118 between the suction area 122 and the connection 188, it can be determined whether the removable suction part 186 is connected to the connection 188 or not. Accordingly, the control device 162 can control the suction unit 112 in at least one control mode corresponding to the suction head suction position and / or in at least one control mode corresponding to the suction part suction position. LIST OF REFERENCE SYMBOLS

[0190] 100 Vacuum cleaning device 110 Suction device 112 Suction unit 116 Suction head 118 Suction guide 122 Suction area 123 Suction flow 125 Suction direction 126 Suction chamber 128 Suction section in the suction head 132 Rollers 136 Device housing 142 Grip device 144 Handle 148 Direction of extension 152 Energy supply device 154 Energy storage device 156 Recess 162 Control device 164 Control element 172 Collection region 174 Collection container 186 Removable suction part 187 Suction part guide section 188 Connection 192 Suction hose 194 Suction pipe 196 Connection counterpart 187 Suction part guide section 214 Suction end 216 Suction end 218 Suction section in the device housing 232 Front suction guide section 234 Rear suction guide section 236 middle suction guide section 252 pressure sensor 254 pressure line 262 operating device 272 output device GD measured pressure DS pressure threshold value DT pressure switching value

Claims

1. Vacuum cleaning device (100) comprising a suction device (110) which has at least one suction head (116), a suction unit (112) and a suction guide (118), wherein in at least one suction head suction position of the suction device (110), a suction region (122) on the suction head (116) and the suction unit (112) are connected in a fluid-conducting manner by the suction guide (118), and wherein the vacuum cleaning device (100) comprises a control device (162) for the suction unit (112) and at least one pressure sensor (252), wherein the at least one pressure sensor (252) is connected to the control device (162) in a signal-effective manner and the at least one pressure sensor (252) is connected to a front suction guide section (232) of the suction guide (118) in a sensor-effective manner, and the control device (162) controls the suction unit (112) at least partially as a function of measurement results of the at least one pressure sensor (262), in particular controls and / or regulates.

2. Vacuum cleaning device (100) according to claim 1, characterized in that the front suction guide section (232) is located in a front half and in particular in a front third of the suction guide (118).

3. Vacuum cleaning device (100) according to one of the preceding claims, characterized in that the suction unit (112) and / or a collection region (172) for sucked-in particles is formed in a rear suction guide section (234) of the suction guide (118), and the front suction guide section (232) is located in front of the rear suction guide section (234) with respect to a suction direction (172) in the suction guide (118).

4. Vacuum cleaning device (100) according to one of the preceding claims, characterized in thatthe suction guide (118) has at least one removable suction part (186) and a connection (188) for the removable suction part (186), and in that the front suction guide section (232) is located in front of the connection (188) in the suction guide (118) with respect to the suction direction (172).

5. Vacuum cleaning device (100) according to the preceding claim, characterized byat least one of the following: - that the connection (188) for the at least one removable suction part (186) is formed, with respect to the suction direction (172), in the suction guide (118) on a section of the suction guide (118) leading to the suction head (116) and in particular to the suction area (122); - that the front suction section (232) is located in front of the connection (188) in the suction guide (118) with respect to the suction direction (172) and / or that the front suction guide section (232) extends from the suction area (122) to the connection (188);- that a suction part guide section (187) of the suction guide (118) is formed in the at least one removable suction part (186) and a connection counterpart (196) for connecting to the connection (188) is formed on a suction end (216) of the suction part guide section (187) and a suction end (214) of the suction part guide section (187) is connected in a fluid-conducting manner to a section of the suction guide (118) leading to the suction unit (112), in particular to the rear suction guide section (234);- that in at least one suction head suction position of the suction guide (118), in which the at least one removable suction part (186) is connected to the connection (188), in particular to its connection counterpart (196), the suction region (122) on the suction head (116) is connected to the suction unit (112) in a fluid-conducting manner, and in at least one suction part suction position of the suction device (110), in which the at least one removable suction part (186) is not connected to the connection (188) and is separated therefrom, the suction region (122) on the suction head (116) is not connected to the suction unit (112) in a suction-free manner; 6. Vacuum cleaning device (100) according to one of the preceding claims, characterized in that the at least one pressure sensor (252) is connected in a sensor-effective manner to a section of the suction guide (118) which is formed in the suction head (116) and / or in a device housing (136) of the vacuum cleaning device (100).

7. Vacuum cleaning device (100) according to one of the preceding claims, characterized in that the suction head (116) forms a suction chamber (126) in which the suction region (122) is located, and that a section of the suction guide (118) leads away from the suction chamber (126) in a fluid-conducting manner, wherein in particular at least one of the following is provided: - that the at least one pressure sensor (252) is connected in a sensor-effective manner to the section of the suction guide (118) leading away from the suction chamber (126); - that the section of the suction guide (118) leading away from the suction chamber (126) is formed at least up to a central suction guide section (236); - that the section of the suction guide (118) leading away from the suction chamber (126) is formed up to the connection (188).

8. Vacuum cleaning device (100) according to one of the preceding claims, characterized byat least one of the following: - that the at least one pressure sensor (252) is arranged at a distance from the suction guide (118); - that a pressure line (254) connects the at least one pressure sensor (252) to the suction guide (118), in particular to the front suction guide section (232), in a sensor-effective manner, wherein in particular a suction flow (123) in the suction guide (118) at least substantially does not flow through the pressure line (254).

9. Vacuum cleaning device (100) according to one of the preceding claims, characterized in that the vacuum cleaning device (100) has at least one device housing (136), wherein at least one of the following is provided: - that the suction head (116) is arranged on the at least one device housing (136) and is in particular pivotably arranged; - that at least one of the suction unit (112) and / or the collection region (172) and / or the control device (162) is arranged in the at least one device housing (136).

10. Vacuum cleaning device (100) according to one of the preceding claims, characterized in that the at least one pressure sensor (252) is arranged in the at least one device housing (136).

11. Vacuum cleaning device (100) according to one of the preceding claims, characterized in that the at least one pressure sensor (252) is arranged at the control device (162) and in particular is arranged on at least one control element (164) of the control device (162).

12. Vacuum cleaning device (100) according to one of the preceding claims, characterized in thatthe at least one pressure sensor (252) measures a measured variable that is at least indicative of a differential pressure with respect to a reference pressure, wherein in particular - the reference pressure is an ambient pressure in the environment of the vacuum cleaning device (100); and / or - the reference pressure is a pressure in a measuring section of the suction guide (118) when the measuring section is not subjected to a suction flow (123), wherein the at least one pressure sensor (252) in the measuring section is connected to the suction guide (118) in a sensor-effective manner.

13. Vacuum cleaning device (100) according to one of the preceding claims, characterized in thatthe control device (162) reduces a suction power of the suction unit (112) at at least one pressure threshold value (252), in particular at an excessively high negative pressure, wherein in particular at least one of the following is provided: - that at at least one pressure threshold value (252) the control device (162) reduces a rotational speed of the suction unit (112), for example a rotational speed of a suction motor and / or a rotational speed of an impeller in the suction unit (112); - that at at least one pressure threshold value (252) the control device (162) reduces a current intensity supplied to the suction unit (112).

14. Vacuum cleaning device (100) according to one of the preceding claims, characterized in thatat least one target pressure range is provided and that in at least one control mode the control device (162) controls the suction unit (112) such that the pressure measured by the at least one pressure sensor (252) remains at least substantially within the at least target pressure range.

15. Vacuum cleaning device (100) according to one of the preceding claims, characterized in that at least one pressure switching value (DT) is provided and that in at least one control mode the control device (162) controls a suction power of the suction unit (112) to a high power.

16. Vacuum cleaning device (100) according to one of the preceding claims, characterized in thatat least in one control mode, at least one proportional-integrating control algorithm, i.e. in particular a PI controller, and / or a proportional-integrating-differentiating control algorithm, i.e. in particular a PID controller, is used by the control device (162) to control the suction unit (112).

17. Vacuum cleaning device (100) according to one of the preceding claims, characterized in that the measurement signals of the at least one pressure sensor (252) are used to control further units, for example to control a brush unit, of the vacuum cleaning device (100).

18. Vacuum cleaning device (100) according to one of the preceding claims, characterized in that the vacuum cleaning device (100) is a hand-held device, in particular with at least one handle (144).

Images