DE102023124005A1 - vacuum cleaner - Google Patents

Abstract

In order to improve a vacuum cleaning device comprising a suction device which has at least one suction head, a suction unit and a suction guide, it is proposed that in at least one suction head suction position of the suction device, a suction region on the suction head and the suction unit are connected in a fluid-conducting manner by 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 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, in particular controls and/or regulates, the suction unit at least partially as a function of measurement results of the at least one pressure sensor.

Description

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

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

In embodiments of the invention, the underlying object is achieved by a suction 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 connected in a fluid-conducting manner through the suction guide, and wherein the suction 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.

In particular, an advantage of the solution according to the invention is that the pressure sensor can measure a pressure in the suction guide, which is at least similar to the pressure in the suction area of the suction head, through the sensor-effective connection to the front suction guide section, and thus the control device can control the suction unit in such a way that at least approximately a desired pressure is present in the suction area.

This is particularly advantageous because it can prevent the vacuum in the suction area from being too high, making it excessively difficult to guide the suction head over a surface to be cleaned, and/or preventing the vacuum from being sufficiently high to suck up dirt particles.

For example, the suction head fits differently well on different surfaces to be cleaned. For example, if the suction power of the suction unit remains constant on a surface where the suction head fits well, too much negative pressure can arise and the suction head can be difficult to move over the surface to be cleaned. On the other hand, for example on an uneven surface, a higher suction power may be required to create a sufficiently large negative pressure to clean such a surface thoroughly. It is therefore advantageous to control the suction unit depending on the pressure in the front suction guide section 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 brings about thorough cleaning.

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

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

Preferably, the control device has different control modes.

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

Conveniently, the vacuum cleaner has different operating modes.

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

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

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.

Here, the front half and/or the front third of the suction guide refers to the extension of the suction guide from the suction area to the suction unit.

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

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.

Preferably, a collection region for sucked-in particles is formed in the suction guide. Preferably, it is provided that a collection container for the sucked-in particles can at least be arranged in the collection region and, when the vacuum cleaning device is operating properly, the collection container is arranged in the collection region.

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.

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.

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

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 a specific location can be flexibly vacuumed, for example, with the removable suction part in this at least one suction part suction position.

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.

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.

• - dass der Anschluss für das zumindest eine abnehmbare Saugteil bezogen auf die Saugrichtung in der Saugführung an einem zu dem Saugkopf und insbesondere zu dem Absaugbereich führenden Abschnitt der Saugführung ausgebildet ist; und/oder
• - dass der vordere Saugabschnitt bezogen auf die Saugrichtung in der Saugführung vor dem Anschluss gelegen ist und/oder dass der vordere Saugführungsabschnitt sich von dem Absaugbereich bis zu dem Anschluss erstreckt; und/oder
• - dass in dem zumindest einen abnehmbaren Saugteil ein Saugteilführungsabschnitt der Saugführung ausgebildet ist und an einem Absaugende des Saugteilführungsabschnitts ein Anschlussgegenstück zum Anschließen an den Anschluss ausgebildet ist und ein Ansaugende des Saugteilführungsabschnitts fluidführend mit einem zu der Saugeinheit führenden Abschnitt der Saugführung, insbesondere mit dem hinteren Saugführungsabschnitt, verbunden ist; und/oder
• - dass in zumindest einer Saugkopf-Absaug-Stellung der Saugführung, in welcher das zumindest eine abnehmbare Saugteil an dem Anschluss insbesondere mit seinem Anschlussgegenstück angeschlossen ist, der Absaugbereich an dem Saugkopf fluidführend und insbesondere absaugend mit der Saugeinheit verbunden ist und in zumindest einer Saugteil-Absaug-Stellung der Saugeinrichtung in welcher das zumindest eine abnehmbare Saugteil nicht an dem Anschluss angeschlossen ist und von diesem getrennt ist, der Absaugbereich an dem Saugkopf nicht absaugend mit der Saugeinheit verbunden ist.

In particular, at least one of the following is provided:

• - that the connection for the at least one removable suction part is formed in relation 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 area; and/or
• - that the front suction section is located in front of the connection in relation to the suction direction in the suction guide and/or that the front suction guide section extends from the suction area 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 connection 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 connected in a fluid-conducting manner 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.

Advantageously, a location can be suctioned with the suction end of the removable suction part, the suction end of which is connected to the suction unit in a fluid-conducting manner.

In particular, the suction guide section is located in a middle suction guide section. The middle suction guide section is related to a suction direction in the suction guide located between the front suction guide section and the rear suction guide section.

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

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 suctioned.

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

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

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.

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.

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.

Advantageously, the suction head forms a suction chamber.

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

In particular, the suction chamber opens towards the suction area.

• - dass der zumindest eine Drucksensor mit dem von der Absaugkammer hinwegführenden Abschnitt der Saugführung sensorwirksam verbunden ist; und/oder
• - dass der von der Absaugkammer hinwegführende Abschnitt der Saugführung zumindest bis zu einem mittleren Saugführungsabschnitt ausgebildet ist; und/oder
• - dass der von der Absaugkammer hinwegführende Abschnitt der Saugführung bis zu dem Anschluss ausgebildet ist.

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 middle suction guide section; and/or
• - that the section of the suction guide leading from the suction chamber is formed up to the connection.

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 can occur in the suction area.

• - dass der zumindest eine Drucksensor beabstandet zu der Saugführung angeordnet ist; und/oder
• - dass eine Druckleitung den zumindest einen Drucksensor mit der Saugführung, insbesondere mit dem vorderen Saugführungsabschnitt, sensorwirksam verbindet, wobei insbesondere ein Saugstrom in der Saugführung zumindest im Wesentlichen nicht durch die Druckleitung strömt.

In favourable 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.

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

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.

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

• - dass der Saugkopf an dem zumindest einen Gerätegehäuse angeordnet ist und insbesondere schwenkbar angeordnet ist; und/oder
• - dass in dem zumindest einen Gerätegehäuse zumindest eines von der Saugeinheit und/oder der Sammelregion und/oder der Steuerungseinrichtung angeordnet ist.

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 arranged pivotably; 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.

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

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

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

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

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

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.

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.

A particular advantage of this is that electronic components for the control 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 to 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 guide in a sensor-effective manner, for example by laying the pressure line.

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

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.

• - der Referenzdruck ein Umgebungsdruck in der Umgebung des Saugreinigungsgerätes ist; und/oder
• - der Referenzdruck ein Druck in einem Messabschnitt der Saugführung ist, wenn der Messabschnitt nicht mit einem Saugstrom beaufschlagt ist.

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,
in particular

• - the reference pressure is an ambient pressure in the vicinity of the vacuum cleaner; and/or
• - the reference pressure is a pressure in a measuring section of the suction line when the measuring section is not subjected to a suction flow.

Advantageously, the control device can thus control the suction unit depending on the differential pressure and advantageously suction is improved in this way, particularly in the suction area.

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

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 when the negative pressure is too high, for example in the suction area.

• - dass bei zumindest einem Druckschwellenwert die Steuerungseinrichtung eine Drehzahl bei der Saugeinheit, beispielsweise eine Drehzahl des Saugmotors und/oder eine Drehzahl des Laufrads bei der Saugeinheit, reduziert; und/oder
• - dass bei zumindest einem Druckschwellenwert die Steuerungseinrichtung eine an die Saugeinheit gegebene Stromstärke reduziert.

In particular, at least one of the following is provided for:

• - that at least one pressure threshold value, the control device reduces a speed of the suction unit, for example a speed of the suction motor and/or a speed of the impeller in the suction unit; and/or
• - that at least one pressure threshold value the control device reduces a current supplied to the suction unit.

In particular, a benefit of this is that a negative pressure, especially in the suction area and/or at another point on the suction guide and/or at another point to be vacuumed, does not become too great. For example, too great a negative pressure in the suction area and/or at a point to be vacuumed is disadvantageous because this can hinder the movement of the suction head over a surface to be cleaned. For example, too great a negative pressure in the suction guide can lead to damage to the suction guide.

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 controls the suction unit using at least one control algorithm such that the measured pressure remains in the target pressure range.

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

In particular, this makes it possible to control a pressure range that is advantageous for thorough suction.

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.

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.

For example, this is advantageous in a vacuum cleaning device whose suction device also has at least one suction part suction position and the suction unit is advantageously controlled to the high power when the suction device is in the suction part suction position. In particular, the area to be vacuumed can be vacuumed extremely thoroughly with the particularly removable suction part with a high suction power.

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.

Advantageously, the high power is at least as high 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.

Advantageously, the high power is in a final power range for the suction unit. For example, the high power is at least 60% and preferably at least 70% and advantageously at least 80% of a maximum intended maximum power to be controlled for the suction unit.

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

In some preferred embodiments, the maximum power to be controlled is lower than the maximum permissible suction power of the suction unit. For example, this avoids excessive overloading of the suction unit.

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.

When controlling, a wide variety of control algorithms and/or regulation algorithms can be used in the control modes.

In advantageous embodiments, at least in one control mode, a control algorithm with at least one proportional component and/or an integrating component and/or a 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.

This allows for particularly efficient control of the suction unit.

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

This is particularly useful for using the existing measurement results for further adjustments for improved suction.

This is particularly advantageous in order to save elements, since different units are controlled by the measurement results of at least one pressure sensor.

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 be rotatable about 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 in 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 apart from the surface to be cleaned.

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

For example, the brush motor is controlled at least partially depending on the measurement results of the at least one pressure sensor. For example, a speed of the brush motor is at least reduced and/or the brush motor is stopped when it is detected by the measurement results of the at least one pressure sensor, in particular by reaching a pressure switching value of the measured pressure, that the suction device is in a suction part suction position.

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 the at least one pressure sensor detect that the suction device is in a suction part suction position, in particular when a pressure switching value of the measured pressure is reached.

In favorable embodiments, the vacuum cleaning device is a hand-held device, in particular with at least one handle.

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

In the above and below, at least approximately provided features are to be understood in particular to mean 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.

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

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

1. 1. Saugreinigungsgerät (100) umfassend eine Saugeinrichtung (110), welche zumindest einen Saugkopf (116), eine Saugeinheit (112) und eine Saugführung (118) aufweist, wobei in zumindest einer Saugkopf-Absaug-Stellung der Saugeinrichtung (110) ein Absaugbereich (122) an dem Saugkopf (116) und die Saugeinheit (112) durch die Saugführung (118) fluidführend verbunden sind, und wobei das Saugreinigungsgerät (100) eine Steuerungseinrichtung (162) für die Saugeinheit (112) und zumindest einen Drucksensor (252) umfasst, wobei der zumindest eine Drucksensor (252) signalwirksam mit der Steuerungseinrichtung (162) verbunden ist und der zumindest eine Drucksensor (252) mit einem vorderen Saugführungsabschnitt (232) der Saugführung (118) sensorwirksam verbunden ist und die Steuerungseinrichtung (162) die Saugeinheit (112) zumindest teilweise in Abhängigkeit von Messergebnissen des zumindest einen Drucksensors (262) ansteuert, insbesondere steuert und/oder regelt.
2. 2. Saugreinigungsgerät (100) nach der Ausführungsform 1, wobei in einer vorderen Hälfte und insbesondere in einem vorderen Drittel der Saugführung (118) der vordere Saugführungsabschnitt (232) gelegen ist.
3. 3. Saugreinigungsgerät (100) nach einer der voranstehenden Ausführungsformen, wobei in einem hinteren Saugführungsabschnitt (234) der Saugführung (118) die Saugeinheit (112) und/oder eine Sammelregion (172) für angesaugte Partikel ausgebildet ist und dass der vordere Saugführungsabschnitt (232) bezogen auf eine Saugrichtung (172) in der Saugführung (118) vor dem hinteren Saugführungsabschnitt (234) gelegen ist.
4. 4. Saugreinigungsgerät (100) nach einer der voranstehenden Ausführungsformen, wobei die Saugführung (118) zumindest ein abnehmbares Saugteil (186) und einen Anschluss (188) für das abnehmbare Saugteil (186) aufweist und dass der vordere Saugführungsabschnitt (232) bezogen auf die Saugrichtung (172) in der Saugführung (118) vor dem Anschluss (188) gelegen ist.
5. 5. Saugreinigungsgerät (100) nach der voranstehenden Ausführungsform, wobei zumindest eines der Folgenden vorgesehen ist:
   • dass der Anschluss (188) für das zumindest eine abnehmbare Saugteil (186) bezogen auf die Saugrichtung (172) in der Saugführung (118) an einem zu dem Saugkopf (116) und insbesondere zu dem Absaugbereich (122) führenden Abschnitt der Saugführung (118) ausgebildet ist; und/oder
   • - dass der vordere Saugabschnitt (232) bezogen auf die Saugrichtung (172) in der Saugführung (118) vor dem Anschluss (188) gelegen ist und/oder dass der vordere Saugführungsabschnitt (232) sich von dem Absaugbereich (122) bis zu dem Anschluss (188) erstreckt; und/oder
   • - dass in dem zumindest einen abnehmbaren Saugteil (186) ein Saugteilführungsabschnitt (187) der Saugführung (118) ausgebildet ist und an einem Absaugende (216) des Saugteilführungsabschnitts (187) ein Anschlussgegenstück (196) zum Anschließen an den Anschluss (188) ausgebildet ist und ein Ansaugende (214) des Saugteilführungsabschnitts (187) fluidführend mit einem zu der Saugeinheit (112) führenden Abschnitt der Saugführung (118), insbesondere mit dem hinteren Saugführungsabschnitt (234), verbunden ist; und/oder
   • - dass in zumindest einer Saugkopf-Absaug-Stellung der Saugführung (118), in welcher das zumindest eine abnehmbare Saugteil (186) an dem Anschluss (188) insbesondere mit seinem Anschlussgegenstück (196) angeschlossen ist, der Absaugbereich (122) an dem Saugkopf (116) fluidführend mit der Saugeinheit (112) verbunden ist und in zumindest einer Saugteil-Absaug-Stellung der Saugeinrichtung (110), in welcher das zumindest eine abnehmbare Saugteil (186) nicht an dem Anschluss (188) angeschlossen ist und von diesem getrennt ist, der Absaugbereich (122) an dem Saugkopf (116) nicht absaugend mit der Saugeinheit (112) verbunden ist.
6. 6. Saugreinigungsgerät (100) nach einer der voranstehenden Ausführungsformen, wobei der zumindest eine Drucksensor (252) mit einem Abschnitt der Saugführung (118), welcher in dem Saugkopf (116) und/oder in einem Gerätegehäuse (136) des Saugreinigungsgerätes (100) ausgebildet ist, sensorwirksam verbunden ist.
7. 7. Saugreinigungsgerät (100) nach einer der voranstehenden Ausführungsformen, wobei der Saugkopf (116) eine Absaugkammer (126) ausbildet, bei welcher der Absaugbereich (122) gelegen ist, und dass ein Abschnitt der Saugführung (118) von der Absaugkammer (126) fluidführend hinweg führt, wobei insbesondere zumindest eines der Folgenden vorgesehen ist:
   • - dass der zumindest eine Drucksensor (252) mit dem von der Absaugkammer (126) hinwegführenden Abschnitt der Saugführung (118) sensorwirksam verbunden ist; und/oder
   • - dass der von der Absaugkammer (126) hinwegführende Abschnitt der Saugführung (118) zumindest bis zu einem mittleren Saugführungsabschnitt (236) ausgebildet ist; und/oder
   • - dass der von der Absaugkammer (126) hinwegführende Abschnitt der Saugführung (118) bis zu dem Anschluss (188) ausgebildet ist.
8. 8. Saugreinigungsgerät (100) nach einer der voranstehenden Ausführungsformen, wobei zumindest eines der Folgenden vorgesehen ist:
   • - dass der zumindest eine Drucksensor (252) beabstandet zu der Saugführung (118) angeordnet ist; und/oder
   • - dass eine Druckleitung (254) den zumindest einen Drucksensor (252) mit der Saugführung (118), insbesondere mit dem vorderen Saugführungsabschnitt (232), sensorwirksam verbindet, wobei insbesondere ein Saugstrom (123) in der Saugführung (118) zumindest im Wesentlichen nicht durch die Druckleitung (254) strömt.
9. 9. Saugreinigungsgerät (100) nach einer der voranstehenden Ausführungsformen, wobei das Saugreinigungsgerät (100) zumindest ein Gerätegehäuse (136) aufweist, wobei zumindest eines der Folgenden vorgesehen ist:
   • - dass der Saugkopf (116) an dem zumindest einen Gerätegehäuse (136) angeordnet ist und insbesondere schwenkbar angeordnet ist; und/oder
   • - dass in dem zumindest einen Gerätegehäuse (136) zumindest eines von der Saugeinheit (112) und/oder der Sammelregion (172) und/oder der Steuerungseinrichtung (162) angeordnet ist.
10. 10. Saugreinigungsgerät (100) nach einer der voranstehenden Ausführungsformen, wobei der zumindest eine Drucksensor (252) in dem zumindest einen Gerätegehäuse (136) angeordnet ist.
11. 11. Saugreinigungsgerät (100) nach einer der voranstehenden Ausführungsformen, wobei der zumindest eine Drucksensor (252) bei der Steuerungseinrichtung (162) angeordnet ist und insbesondere an zumindest einem Steuerungselement (164) der Steuerungseinrichtung (162) angeordnet ist.
12. 12. Saugreinigungsgerät (100) nach einer der voranstehenden Ausführungsformen, wobei der zumindest eine Drucksensor (252) eine Messgröße, die zumindest indikativ für einen Differenzdruck zu einem Referenzdruck ist, misst, wobei insbesondere
    • - der Referenzdruck ein Umgebungsdruck in der Umgebung des Saugreinigungsgerätes (100) ist; und/oder
    • - der Referenzdruck ein Druck in einem Messabschnitt der Saugführung (118) ist, wenn der Messabschnitt nicht mit einem Saugstrom (123) beaufschlagt ist, wobei der zumindest eine Drucksensor (252) in dem Messabschnitt mit der Saugführung (118) sensorwirksam verbunden ist.
13. 13. Saugreinigungsgerät (100) nach einer der voranstehenden Ausführungsformen, wobei die Steuerungseinrichtung (162) bei zumindest einem Druckschwellenwert (252), insbesondere bei einem zu großen Unterdruck, eine Saugleistung der Saugeinheit (112) reduziert, wobei insbesondere zumindest eines der Folgenden vorgesehen ist:
    • - dass bei zumindest einem Druckschwellenwert (252) die Steuerungseinrichtung (162) eine Drehzahl bei der Saugeinheit (112), beispielsweise eine Drehzahl eines Saugmotors und/oder eine Drehzahl eines Laufrads bei der Saugeinheit (112), reduziert; und/oder
    • - dass bei zumindest einem Druckschwellenwert (252) die Steuerungseinrichtung (162) eine an die Saugeinheit (112) gegebene Stromstärke reduziert.
14. 14. Saugreinigungsgerät (100) nach einer der voranstehenden Ausführungsformen, wobei zumindest ein Solldruckbereich vorgesehen ist und dass in zumindest einem Steuerungsmodus die Steuerungseinrichtung (162) die Saugeinheit (112) so ansteuert, dass der von dem zumindest einen Drucksensor (252) gemessene Druck zumindest im Wesentlichen innerhalb des zumindest Solldruckbereiches bleibt.
15. 15. Saugreinigungsgerät (100) nach einer der voranstehenden Ausführungsformen, wobei zumindest ein Druckschaltwert (DT) vorgesehen ist und dass in zumindest einem Steuerungsmodus die Steuerungseinrichtung (162) eine Saugleistung der Saugeinheit (112) auf eine hohe Leistung ansteuert.
16. 16. Saugreinigungsgerät (100) nach einer der voranstehenden Ausführungsformen, wobei zumindest in einem Steuerungsmodus zumindest ein proportional-integrierender-Regelalgorithmus, also insbesondere ein PI-Regler, und/oder ein ein proportional-integrierender- differenzierender-Regelalgorithmus, also insbesondere ein PID-Regler, von der Steuerungseinrichtung (162) zum Ansteuern der Saugeinheit (112) verwendet wird.
17. 17. Saugreinigungsgerät (100) nach einer der voranstehenden Ausführungsformen, wobei die Messsignale des zumindest einen Drucksensors (252) zur Ansteuerung weiterer Einheiten, beispielsweise zur Ansteuerung einer Bürsteneinheit, des Saugreinigungsgeräts (100) verwendet werden.
18. 18. Saugreinigungsgerät (100) nach einer der voranstehenden Ausführungsformen, wobei das Saugreinigungsgerät (100) ein Handgerät insbesondere mit zumindest einem Handgriff (144) ist.

The description of solutions according to the invention thus includes in particular the various feature combinations defined by the following numbered embodiments:

1. 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 it.
2. 2. Vacuum cleaning device (100) according to embodiment 1, wherein 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. 3. Vacuum cleaning device (100) according to one of the preceding embodiments, wherein 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 that the front suction guide section (232) is arranged with respect to a suction direction (172) in the suction guide (118) is located in front of the rear suction guide section (234).
4. 4. Vacuum cleaning device (100) according to one of the preceding embodiments, wherein the suction guide (118) has at least one removable suction part (186) and a connection (188) for the removable suction part (186) and 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. 5. Vacuum cleaning device (100) according to the preceding embodiment, wherein at least one of the following is provided:
   • that the connection (188) for the at least one removable suction part (186) is formed in relation 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); and/or
   • - that the front suction section (232) is located in the suction guide (118) in front of the connection (188) 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); and/or
   • - 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 connection 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); and/or
   • - 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. 6. Vacuum cleaning device (100) according to one of the preceding embodiments, wherein 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. 7. Vacuum cleaning device (100) according to one of the preceding embodiments, wherein 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); and/or
   • - 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); and/or
   • - that the section of the suction guide (118) leading from the suction chamber (126) is formed up to the connection (188).
8. 8. Vacuum cleaning device (100) according to one of the preceding embodiments, wherein at least one of the following is provided:
   • - that the at least one pressure sensor (252) is arranged at a distance from the suction guide (118); and/or
   • - 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. 9. Vacuum cleaning device (100) according to one of the preceding embodiments, wherein 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 arranged pivotably; and/or
   • - 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. 10. Vacuum cleaning device (100) according to one of the preceding embodiments, wherein the at least one pressure sensor (252) is arranged in the at least one device housing (136).
11. 11. Vacuum cleaning device (100) according to one of the preceding embodiments, wherein 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. 12. Vacuum cleaning device (100) according to one of the preceding embodiments, wherein the at least one pressure sensor (252) 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 (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. 13. Vacuum cleaning device (100) according to one of the preceding embodiments, wherein the control device (162) reduces a suction power of the suction unit (112) at at least one pressure threshold value (252), in particular at too high a negative pressure, wherein in particular at least one of the following is provided:
    • - that at least one pressure threshold value (252) the control device (162) reduces a speed of the suction unit (112), for example a speed of a suction motor and/or a speed of an impeller in the suction unit (112); and/or
    • - that at at least one pressure threshold value (252) the control device (162) reduces a current intensity supplied to the suction unit (112).
14. 14. Vacuum cleaning device (100) according to one of the preceding embodiments, wherein at 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. 15. Vacuum cleaning device (100) according to one of the preceding embodiments, wherein 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. 16. Vacuum cleaning device (100) according to one of the preceding embodiments, wherein at least in one control mode at least one proportional-integrating control algorithm, in particular a PI controller, and/or a proportional-integrating-differentiating control algorithm, in particular a PID controller, is used by the control device (162) to control the suction unit (112).
17. 17. Vacuum cleaning device (100) according to one of the preceding embodiments, wherein 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. 18. Vacuum cleaning device (100) according to one of the preceding embodiments, wherein the vacuum cleaning device (100) is a hand-held device, in particular with at least one handle (144).

Preferred embodiments and features of the invention and, for example, advantages thereof are the subject of the following detailed description and the graphic representation of an embodiment in different variants.

• 1: Ansichten eines Ausführungsbeispiels eines Saugreinigungsgerät;
• 2: eine Schnittdarstellung des Ausführungsbeispiels des Saugreinigungsgerätes;
• 3: eine ausschnittsweise vergrößerte Darstellung der Schnittdarstellung gemäß 2;
• 4: das Ausführungsbeispiel eines Saugreinigungsgerätes in einer Saugteil-Absaug-Stellung von dessen Saugeinrichtung;
• 5: eine schematische Darstellung eines Saugreinigungsgerätes eines Ausführungsbeispiels;
• 6: ein Schema einer Ansteuerung einer Saugeinheit eines Saugreinigungsgerätes.

In the drawing show:

• 1 : Views of an embodiment of a vacuum cleaning device;
• 2 : a sectional view of the embodiment of the vacuum cleaning device;
• 3 : a partially enlarged view of the sectional view according to 2 ;
• 4 : the embodiment of a vacuum cleaning device in a suction part suction position of its suction device;
• 5 : a schematic representation of a vacuum cleaning device of an embodiment;
• 6 : a diagram of a control of a suction unit of a vacuum cleaning device.

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

An exemplary embodiment of a vacuum cleaning device 100 is shown in the 1 to 4 shown. In the 5 A diagram of a vacuum cleaning device 100 is shown as an example.

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

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 to the suction unit 112 in a fluid-conducting and suction-absorbing manner via the suction guide 118 in at least one suction head suction position of the suction device 110. This position is shown by way of example in the 1 , 2 , 5 shown.

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.

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.

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, wherein the suction chamber 126 opens onto the floor to be cleaned, so that the suction region 122 is located at least adjacent to the floor.

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

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.

For example, the vacuum cleaning device 100 has, in particular, rotatably mounted brushes on the suction head 116. For example, the brushes can be adjusted and 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 favorable variants, a brush motor is provided, which can drive the rotatably mounted brushes in rotation about their axis of rotation.

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.

Conveniently, the suction head 116 is connected to the device housing 136.

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

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

For example, the suction cleaning device 100 is a rod cleaning device which comprises 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 holding 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.

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.

Conveniently, the vacuum cleaning device 100 has a handle device 142 with at least one handle 144.

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

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.

For example, the vacuum cleaning device 100 extends in an extension direction 148. Advantageously, the handle 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.

In particular, the handle device 142 is designed with 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.

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.

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

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

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

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 such a way that energy is transmitted.

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

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 with at least one integrated circuit.

The suction device 110 advantageously 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 at least be arranged in the collection region 172. When the vacuum cleaning device 100 is used properly, 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.

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

In favorable 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.

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.

Advantageously, the removable suction part 186 is designed to be rigid at least in sections, for example by means of a rigid suction pipe 194.

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 1 , 2 , 5 shown.

In at least one suction part suction position, the removable suction part 186 is not connected to the connection 188 and, for example, a specific location can then be flexibly suctioned in a targeted manner using the removable suction part 186.

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.

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

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.

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.

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 1 is shown.

In some variants, the suction section 128 in the suction head 116 is adjoined by a further section of the suction guide 118, the further section being formed in the device housing 186, and the connection 188 being formed in the device housing 136, as in the schematic representation in the 5 is shown as an example for a variant. The 5 However, 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 5 is also representative for such variants.

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.

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

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.

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.

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.

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.

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

In some favorable 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 5 is shown.

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 3 is shown.

Accordingly, the pressure line 254 in the variants shown 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.

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

The pressure sensor 252 is advantageously arranged in the device housing 136. The pressure sensor 252 is advantageously arranged at least at 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.

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.

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

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.

In particular, the measured pressure value GD is a negative pressure compared 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 if this suction area 122 is not in contact with a surface and/or a pressure in the measuring section if it is not subjected to a suction flow.

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

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.

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

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

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 kept in a pressure range between a first pressure threshold value DS1 and a second pressure threshold value DS2.

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.

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

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

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

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

For example, a pressure threshold value DS for a vacuum cleaning device 100 fed from an energy storage device is lower, for example 25 mbar.

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.

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.

If the suction 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 corresponds at least approximately 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.

In particular, a control action, when the measured pressure value GD at least approximately corresponds to the pressure switching value DT, is that the suction unit 112 is ramped up to a high power and, for example, to a maximum adjustable power. For example, the high power and/or the maximum adjustable power is at least 60% and in particular at least 75% of the maximum permitted power for the suction unit 112.

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.

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

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

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

In particular, the operating device 262 can be used to at least partially operate the vacuum cleaning device 100, in particular 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 can be set.

Conveniently, the vacuum cleaning device 100 comprises at least one output device 272 with at least one output unit.

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

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

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

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.

A user can use the interface to connect an external device, in particular an external communication terminal, for example a smartphone, to the vacuum cleaning device 100, for example at least to the control device 162, in a data-transmitting manner. The user can thus conveniently operate the vacuum cleaning device 100 at least partially via the external device and/or have output signals output via the external device.

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

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

At least in one position of the suction device 110, in particular in a suction head suction position, a suction region 122 of the suction head 116 of the vacuum cleaning device 100 is connected to the suction unit 112 in a fluid-conducting manner through the suction guide 118, and in a switched-on operating mode, the suction unit 112 sucks air from the suction region 122 through the suction guide 118.

For example, a removable suction part 186 is formed in the suction guide 118, in particular in the middle suction guide section 234.

At a suction end 214, the suction part guide section 187 of the removable suction part 186 is connected to the suction unit 112 in a fluid-conducting manner. 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 connected to the suction area 122 on the suction head 116 in a fluid-conducting manner by a section of the suction guide 118.

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.

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

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.

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 at the control device 162.

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

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.

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

In particular, the pressure measurement in a section of the suction guide 118 between the suction area 122 and the connection 188 can be used to detect 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.

REFERENCE SYMBOL LIST

100

vacuum cleaner

110

suction device

112

suction unit

116

suction head

118

suction guide

122

extraction area

123

suction flow

125

suction direction

126

suction chamber

128

suction section in the suction head

132

Roll

136

device housing

142

handle

144

handle

148

direction of extension

152

energy supply facility

154

energy storage

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

intake manifold

196

connection counterpart

187

suction part guide section

214

suction end

216

suction

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

control device

272

output device

GD

measured pressure

DS

pressure threshold

DT

pressure switching value

Claims (18)

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 depending on measurement results of the at least one pressure sensor (262), in particular controls and/or regulates it. Vacuum cleaning device (100) after 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). 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 that the front suction guide section (232) is located in front of the rear suction guide section (234) in relation to a suction direction (172) in the suction guide (118). Vacuum cleaning device (100) according to one of the preceding claims, characterized in that the suction guide (118) has at least one removable suction part (186) and a connection (188) for the removable suction part (186) and 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). Vacuum cleaning device (100) according to the preceding claim, characterized by at least one of the following: - that the connection (188) for the at least one removable suction part (186) is formed 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) with respect to the suction direction (172); and/or - 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); and/or - 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 connection 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); and/or - 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. 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). 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); and/or - that the section of the suction guide (118) leading away from the suction chamber (126) is formed at least up to a middle suction guide section (236); and/or - that the section of the suction guide (118) leading from the suction chamber (126) is formed up to the connection (188). Vacuum cleaning device (100) according to one of the preceding claims, characterized by at least one of the following: - that the at least one pressure sensor (252) is arranged at a distance from the suction guide (118); and/or - 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). 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 in particular is arranged pivotably; and/or - 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). 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). 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). Vacuum cleaning device (100) according to one of the preceding claims, characterized in that the at least one pressure sensor (252) 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 (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. Vacuum cleaning device (100) according to one of the preceding claims, characterized in that the control device (162) reduces a suction power of the suction unit (112) at at least one pressure threshold value (252), in particular at too great a 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 in 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); and/or - that at at least one pressure threshold value (252) the control device (162) reduces a current intensity supplied to the suction unit (112). Vacuum cleaning device (100) according to one of the preceding claims, characterized in that at 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. 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. Vacuum cleaning device (100) according to one of the preceding claims, characterized in that at least in one control mode at least one proportional-integrating control algorithm, in particular a PI controller, and/or a proportional-integrating-differentiating control algorithm, in particular a PID controller, is used by the control device (162) to control the suction unit (112). Vacuum cleaning device (100) according to one of the preceding claims, characterized in that the measuring 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). 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).

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