DE102017120800A1 - Vacuum cleaning device with a suction nozzle - Google Patents

Abstract

The invention relates to a suction cleaning device (1) having a suction nozzle (2), a suction fan and a suction channel (4) opening into a suction mouth (3), which provides a flow connection from the suction mouth (3) to the suction fan, wherein the suction channel (4 ) has a sensor (5) for detecting electrically charged particles flowing through the suction channel (4), the sensor (5) being assigned an evaluation device (6) for determining a particle concentration and / or quantity on the basis of the detection result of the sensor (5) is. In order to reliably determine the determined particle concentration and / or amount, it is proposed that the evaluation device (6) is set up to apply a correction value and / or an evaluation method when determining the particle concentration and / or quantity, which environmental parameters influence the detection result , Operating parameters and / or device parameters represent.

Description

Field of engineering

The invention relates to a vacuum cleaning device having a suction nozzle, a suction fan and a suction opening into a suction mouth, which provides a flow connection from the suction mouth to the suction fan, wherein the suction channel has a sensor for detecting electrically flowing through the suction channel electrically charged particles, wherein the sensor an evaluation device for determining a particle concentration and / or quantity is associated with the detection result of the sensor.

State of the art

Saugreinigungsgeräte of the aforementioned type are known in the art.

The vacuum cleaning device has a suction channel, which on the one hand has a flow connection to a fan and on the other hand opens into the suction mouth. During operation of the blower, a surface to be cleaned is subjected to negative pressure via the suction mouth, so that dust and / or dirt located on the surface can be conveyed through the suction channel in the direction of a suction material collecting device of the vacuum cleaning device.

In order to be able to adapt individual settings of the vacuum cleaning device to a current ground condition, in particular a contamination situation, it is further known in the prior art to arrange a sensor within the suction channel which measures a concentration and / or quantity of the particles sucked in. The patent DE 10 2008 026 884 B4 discloses, for example, a cleaning device, in whose flow channel a sensor for generating a dependent of the concentration and / or the amount of particles sucked measuring signal is provided, the sensor between the suction port and the collecting container is arranged and wherein an evaluation device for generating at least one of the Concentration and / or the amount of sucked particles dependent control signal is provided. The sensor is for example a ring sensor, which encloses a plane of the suction channel in the circumferential direction. The sensor measures an influence of electrically charged particles of the suction air flow passing through the annular sensor. The electrically charged particles generate an electric field, which in turn causes a charge redistribution on an electrode of the sensor by influence. The amount of charge induced corresponds to the amount of charge trapped in an annular manner by the electrode.

Summary of the invention

Based on the aforementioned prior art, it is an object of the invention to more reliably determine the particle concentration and / or amount that gives an indication of the contamination of the surface to be cleaned and thus to adjust the vacuum cleaning device so that achieves optimum cleaning effect can be.

To solve the above object, it is proposed that the evaluation device is set up to use a correction value and / or an evaluation method in determining the particle concentration and / or quantity, which represent an environmental parameter, operating parameters and / or device parameters influencing the detection result.

According to the invention, the measurement data measured by the sensor are now adjusted as a function of one or more environmental parameters, operating parameters and / or device parameters, which in practice lead to a falsification of the measurement results. Thus, an evaluation of the measurement result by means of the evaluation device, since this not only uses the pure measurement signal to determine the particle concentration and / or amount, but also takes into account factors that falsify the measurement result usually. The evaluation device is set up either to apply a correction value to the measurement result of the sensor, or to use directly an evaluation method for the calculation of the particle concentration and / or quantity, which is advantageous for currently existing environmental parameters, operating parameters and / or device parameters. The advantageous evaluation methods and / or correction values for different parameters are preferably determined empirically. For this purpose, measured data of the sensor can be determined for a multiplicity of known environmental parameters, operating parameters and / or device parameters as well as different degrees of soiling of surfaces which is then suitable with regard to a suitable correction value and / or a suitable evaluation method for eliminating the influence of these parameters.

It is proposed that the correction value be a characteristic of the type of a floor covering to be cleaned correction factor. Different types of floor coverings show different characteristic secretions of particles, which are caused by the material of the floor covering. A carpet or carpet, which naturally consists of a multiplicity of textile fibers, usually emits a multiplicity of fibers when subjected to negative pressure by a vacuum cleaning device, which fibers are then introduced into the fabric Suction channel and there could be evaluated by the sensor as dirt particles. A hard floor, such as a stone floor or wooden floor, usually does not emit such fibers or other particles, so that a detection result of the sensor on a hard floor could simulate a lower degree of soiling of the surface to be cleaned than on a carpet or carpet floor. In order to eliminate this environmental parameter, which is due to the nature of the floor covering, this influence is corrected during the evaluation by the evaluation device by means of a characteristic correction factor which is assigned to the particular floor covering to be cleaned. The correction factor is preferably a factor that is multiplied by the result of the determined particle concentration and / or amount. When determining the particle concentration and / or amount on a carpet or carpet, in particular, a correction factor of 0.9 to 0.75 is suitable. In practice, in particular, a correction factor of approximately 0.85 has proven itself. This correction factor corresponds to a background noise of material abrasion sucked in together with the dirt particles of approximately 20% of the sensor signal. The material abrasion may differ from carpet to carpet, so that preferably depending on a type of carpet varying typical correction factors can be provided.

Furthermore, it is proposed that the correction value is a characteristic of a climate parameter at the location of Saugreinigungsgerätes correction factor. The climate parameter may in particular be an air humidity and / or a temperature which prevails at the location of the vacuum cleaning device. Climate parameters can significantly influence the measured values detected by the sensor. For example, at a relative humidity of more than 90% at 30 ° C, the amplitude of the measurement signal decreases by about half compared to an amplitude of the measured signal at a relative humidity of 50% at 25 ° C. The consideration of one or more climate parameters plays in particular for Vacuum cleaners a role that are offered in very different markets. For example, at different locations of the cleaning device such as Germany and China can find significantly different climate parameters. The climate parameters also vary depending on the season and dependent thereon typically occurring humidities and temperatures. The location of the vacuum cleaning device can be transmitted manually by the manufacturer or a user to the evaluation device. Alternatively, however, the location can also automatically by means of a GPS sensor of Saugreinigungsgerätes or an external terminal, eg. B. mobile phone, are detected.

Furthermore, it is proposed that the correction value is a correction factor which is characteristic of a flow velocity of the suction air flow flowing within the suction channel and / or of a movement speed of the suction cleaning device relative to the surface to be cleaned and / or an operating mode of the suction blower and / or a cleaning element of the vacuum cleaning device , The aforementioned operating parameters and device parameters of the vacuum cleaning device all show a greater or lesser influence on the measuring signal of the sensor. If the suction fan of the vacuum cleaning device is operated with different suction stages, the flow velocity of the particles flowing through the suction channel, which are contained in the suction air flow, also varies. The higher flow rate has an influence on the measurement signal, since a different number of measurement pulses can be detected within a time period considered by the evaluation device for determining the particle concentration or quantity flowing past the sensor. In this respect, it is highly recommended in a vacuum cleaning device, which can be operated with different suction levels of the suction fan, to apply a corresponding correction value for a specific flow speed in the evaluation. The same applies if the state of a in the suction channel or a suction material collecting container, which is arranged between the suction mouth and the suction fan changes. The flow resistance within the suction channel changes the negative pressure which prevails inter alia at the suction mouth of the vacuum cleaning device, so that correspondingly fewer or more particles can be sucked into the vacuum cleaning device. Both the suction stage and the negative pressure generated by the suction fan influence the flow velocity of the suction air flow flowing inside the suction channel, which should therefore be adjusted by a corresponding correction value in order to objectively determine a degree of soiling of the surface to be cleaned. The same applies if, for example, a base unit of the vacuum cleaning device can be operated with different attachments, which have different flow resistance for the suction air flow. Again, a corresponding correction value should be provided which compensates for this device parameter. Furthermore, various operating parameters of the attachment or the vacuum cleaning device can be provided, which have an influence on the flow velocity within the suction channel. Influences can arise, for example, due to different positions of sealing elements, in particular flexible sealing lips or bristle elements, which seal the suction mouth of the vacuum cleaning device against an environment. Furthermore has Also, the speed of movement of Saugreinigungsgerätes relative to the surface to be cleaned an effect on the measurement signal of the sensor. If the speed of movement of the vacuum cleaning device increases, the vacuum cleaning device sweeps over a larger area and possibly also a larger number of particles during a certain period of time, as compared with a movement at a lower moving speed. In this respect, it is recommended that the evaluation device is set up to apply different correction values for specific movement speeds or movement speed ranges when determining the particle concentration and / or quantity. Furthermore, the speed of movement of the vacuum cleaning device can also have effects on a suitable procedure in the evaluation of the measuring signal of the sensor. For example, at high speeds of the vacuum cleaner, a different method of evaluation may be used than with slower moving speeds because at relatively high moving speeds of the vacuum cleaner rather narrow signal peaks of high amplitude occur and slower moving speeds rather a broad but flat (lower amplitude) sensor signal is observed , Different evaluation methods could accordingly focus on an area or peak height of the measurement signal, depending on a current movement speed of the vacuum cleaning device. Furthermore, the evaluation device can also be set up to use a correction value for an operating mode of the suction blower and / or a cleaning element of the vacuum cleaning device. The operating mode of the suction fan is, as explained above, for example, a certain suction stage of the suction fan of the vacuum cleaning device. Furthermore, an operating mode, for example of a cleaning element, in particular of a cleaning element, which acts mechanically on the surface to be cleaned, may also vary. This may, for example, be a cleaning element rotating about a rotation axis, in particular a bristle roller or a wiping roller. The operating mode of the cleaning element is, for example, a certain rotational speed, which has an influence on an electrostatic charge of the surface to be cleaned and / or on the detachment of dirt particles and / or material particles from the surface to be cleaned An operating mode of the cleaning element, for example, a frequency of be vibrating cleaning element, for example, a plate-like cleaning element which sweeps in reciprocating movements over the surface to be cleaned. Finally, a correction factor used by the evaluation device can also include an operating mode of an attachment of the vacuum cleaning device, which provides different settings, for example a hard floor position and a carpet position for different floor coverings to be cleaned. These settings differ in particular with respect to a distance of the suction mouth relative to the surface to be cleaned and / or the position of sealing elements which at least partially seal the suction mouth and thus cause a certain negative pressure on the surface to be cleaned.

Furthermore, it is proposed that the correction value be a characteristic of a type of cleaning element and / or a type and / or a cleaning state of a filter element correction factor. This correction factor relates to the actual physical configuration of the cleaning element and / or filter element of Saugreinigungsgerätes. Depending on the nature of the cleaning element or filter element, in principle different amounts of particles can be released from or out of the surface to be cleaned, different electrostatic charges of the surface to be cleaned occur, or even a flow velocity or a reduced pressure within the suction channel or at the suction mouth. Therefore, the individual components of the Saugreinigungsgerätes, especially if it is exchangeable components, be associated with characteristic correction value.

This correction value can be recognized, for example, by the vacuum cleaning device or its evaluation device when the corresponding component is inserted into the vacuum cleaning device or connected to it. For example, the corresponding correction value can be available as a data record within the component, for example as an optical or electrical code, which can be detected and recognized by a corresponding detection device of the vacuum cleaning device.

Furthermore, it is proposed that the evaluation method is determined by a movement speed of the vacuum cleaning device relative to the surface to be cleaned. The evaluation method may relate in particular to a period considered during the evaluation for the detection of electrically charged particles. As explained above, the speed of movement of the vacuum cleaning device relative to the surface to be cleaned in particular influences the signal shape of the measuring signal detected by the sensor. The greater the speed of movement of the vacuum cleaning device, the narrower and higher the sensor signal. The lower the movement speed, the wider the sensor signal becomes and the lower its signal amplitude becomes. The evaluation device is now designed These changes in the measurement signal must be taken into account by selecting the appropriate evaluation method for determining the particle concentration or quantity. In this case, the evaluation method can focus either on the evaluation of an area arising in the diagram under the sensor signal or the amplitude of the signal peaks. As a result, the speed-dependent evaluation methods consider the relevant time periods, which provide an actual explanation of the existing electrically charged particles. If the measurement signal builds up only slowly up to a maximum peak height, it is advisable to provide a longer time span for the detection than, on the other hand, relatively high movement speeds of the vacuum cleaning device in which the sensor detects a sudden increase in the amount of electrically charged particles which a relatively narrow and high sensor signal is associated. In contrast, at the last-mentioned relatively high movement speeds, a shorter time span can be considered in the evaluation.

Furthermore, it is proposed that the vacuum cleaning device has a memory in which a correction value corresponding to an environmental parameter and / or operating parameter and / or device parameter and / or an evaluation method are stored, wherein the evaluation device is set up to access the memory. The memory may include, for example, in tabular form, a plurality of associations between one or more environmental parameters, operating parameters, device parameters, and corresponding correction values. For example, varying typical correction values can be stored in a suitable form according to soil types or even individual types of carpet and thus kept in the file for evaluation by the evaluation device. Likewise, alternatively or additionally, if appropriate in the same or a separate file, different evaluation methods may be stored, which offer themselves during the evaluation by the evaluation device. In addition, the file may also have different climate data for different locations of Saugreinigungsgerätes, optionally further subdivided by a breakdown by time of day, season and the like. The memory may be a permanently integrated into the vacuum cleaner memory, but alternatively also a mobile storage element, such as a USB stick, SD card or more. Alternatively, the vacuum cleaning device may also include a communication module for wireless communication with an external device or server, which has a memory with stored parameters.

If the vacuum cleaning device is a self-propelled vacuum cleaning device, it is proposed as an advantageous embodiment that the Saugreinigungsgerät has a memory in which an environment map of an environment of Saugreinigungsgerätes is stored, which map information about a position-dependent type of flooring and / or a position-dependent Has correction value for the type of flooring. An autonomous vacuum robot usually has a navigation and self-locating device, which uses environment data, for example distances to obstacles, to create a map of the surroundings, which is created in the manner of a plan of the surroundings with obstacles present therein. In addition, this map of the surroundings may have corresponding correction values for site-specific floor coverings and / or the floor coverings. Thus, the correction values can also be entered in the environmental map created by the vacuum cleaning device or a map plane linked to the environment map. Alternatively, the environment map may only contain information about the nature of the location-dependent floor covering, wherein the evaluation device can determine a corresponding correction value from a file as a function of this information.

Furthermore, it can be provided that the vacuum cleaning device has a detection device which is set up to determine a position, an environmental parameter, an operating parameter and / or a device parameter which influences the particle concentration and / or quantity determined by the evaluation device. With this configuration, the vacuum cleaning device with its own means, namely the detection device and the evaluation device is able to determine a situation-appropriate correction value and to use to calculate the particle concentration and / or amount and adjust accordingly parameters of Saugreinigungsgerätes for optimal cleaning success. The detection device may be, for example, a GPS sensor or a communication module for determining a position of the vacuum cleaning device, a detection device for determining a temperature and / or humidity of the environment, a detection device for detecting a currently used operating parameter or device parameter of the vacuum cleaning device or a component thereof, in particular a cleaning element, filter element or attachment. The environmental parameter detected by the detection device can in particular also be a type of soil of a surface to be cleaned. The determination of this environmental parameter can take place by means of a detection device designed as a soil-type sensor, for example by an image acquisition device such as a camera or a camera chip, a reflection measuring device for determining a reflectance of a surface to be cleaned, which suggests a type of soil, or others. An operating parameter of the vacuum cleaning device, such as a flow velocity of the suction air flow within the suction channel, a moving speed of the vacuum cleaning device or a negative pressure occurring at the suction mouth or within the suction channel, can be detected by corresponding own detection devices of the vacuum cleaning device, in particular pressure sensors, speed sensors or flow measuring devices.

Furthermore, provision may be made for the vacuum cleaning device to have a communication device which is set up to establish a communication connection to an external memory and to access an environmental parameter stored therein and / or an environmental map of the vacuum cleaning device stored therein. According to this embodiment, there is a file which is accessed by the evaluation, not within the Saugreinigungsgerätes itself but in an external memory, such as another device of the user, a network server (especially a cloud) or the like. According to one embodiment, it can be provided, for example, that a server of a home network of the user holds an environment map for the vacuum cleaning device and possibly other mobile devices of the household, within which location-dependent soil types or environmental parameters such as temperature and humidity are stored. Furthermore, the data stored in the external memory, in particular also an environmental map stored therein, can also be transmitted to the external memory by one or more vacuum cleaning devices which are in communication connection with this external memory, for example environmental parameters detected by a detection device of a vacuum cleaning device. For example, environmental parameters such as relative humidity and temperature may be obtained by using climate data stored in the external memory. For example, climate data in an external database, which are stored in a common server or other mobile or stationary devices of the household can be provided. Furthermore, the environmental parameters can also be obtained from the Internet, possibly also from weather reports, which include a relative humidity at a specific room or ambient temperature. In this embodiment, the communication device of the vacuum cleaning device has a communication connection to the Internet. On the basis of the Internet access can also be determined a location of Saugreinigungsgerätes and accordingly applicable for the current location of Saugreinigungsgerätes season and there typically occurring humidities and / or temperatures. Optionally, the communication device of the vacuum cleaning device can also be coupled with communication devices of other stationary devices, such as an air cleaner.

list of figures

• 1 ein erfindungsgemäßes Saugreinigungsgerät,
• 2 eine Saugdüse des Saugreinigungsgerätes mit einem in einem Saugkanal angeordneten Sensor zur Detektion einer Partikelkonzentration und/oder -menge.

In the following the invention will be explained in more detail by means of exemplary embodiments. Show it:

• 1 an inventive vacuum cleaning device,
• 2 a suction nozzle of the vacuum cleaning device with a arranged in a suction channel sensor for detecting a particle concentration and / or amount.

Description of the embodiments

1 shows a Saugreinigungsgerät 1 , which here as a hand-held device with a base unit 8th and an associated suction nozzle 2 is trained. The suction nozzle 2 is separable on the base unit in the manner of a header 8th arranged. The basic device 8th has a handle 9 on which is telescopic, so that a user of Saugreinigungsgerätes 1 the length of the stem 9 can adapt to his height. On the stalk 9 is also a handle 10 arranged at which the user of the vacuum cleaner 1 during a normal work operation lead, ie push over a surface to be cleaned, can. During operation, the user guides the vacuum cleaning device 1 usually in opposite directions of movement over the surface to be cleaned. He pushes the vacuum cleaner 1 alternately away from or pulls to himself. At the handle 10 Here is, for example, a switch 11 arranged, for example, the on and off of a motor of a motor-blower unit of the vacuum cleaning device, not shown 1 serves. Of course it is also possible that the vacuum cleaning device 1 a self-propelled moving device, in particular an autonomous vacuum robot.

The suction nozzle 2 Here, for example, has a housing 12 with a connection area 15 on, on which the base unit 8th of the vacuum cleaning device 1 can be connected. Inside the case 12 is a suction channel 4 which is a flow connection to the motor-blower unit of Saugreinigungsgerätes 1 provides. The suction channel 4 flows into a suction mouth 3 over which the surface to be cleaned with negative pressure is charged. The suction mouth 3 is further a cleaning element 7 assigned here, namely a rotating about a substantially horizontal axis of rotation bristle roller, which has a plurality of bristles 14 having. Furthermore, the suction nozzle has 2 about wheels 13 , with the help of which the vacuum cleaning device 1 can roll on the surface to be cleaned.

2 shows a more detailed view of the suction nozzle 2 , Inside the suction channel 4 is an annular sensor 5 arranged. The sensor 5 is an evaluation device 6 assigned, which is set up, the measurement data of the sensor 5 to process and evaluate. The sensor 5 is designed for the detection of electrically charged particles, which in a through the suction channel 4 flowing suction air flow are. In a working operation within a household of the Saugreinigungsgerät 1 absorbed suction material usually has electrically charged particles, which in the sensor formed here as influenza sensor 5 cause a shift of electrical charges that can be measured. The evaluation device 6 determined from the measuring signal of the sensor 5 a particle concentration and / or amount of the through the suction channel 4 flowing particles and thereby includes, for example, a degree of contamination of a currently cleaned area. The sensor 5 is here annular, wherein the sensor 5 forms an unfastened ring. The sensor 5 extends substantially in the circumferential direction of an inner wall of the suction channel 4 so that through the suction channel 4 flowing particles at the same time by that of the sensor 5 streaming level. The electrically charged particles of the suction air flow are due to the effect of influence on an electrically conductive detection region of the sensor 5 detected. Of course it is also possible that the sensor 5 has a different shape, for example, a closed ring area, a rather plate-like design or the like. Furthermore, it may be in the sensor 5 also be a sensor that measures electrically charged particles within the Saugluftstroms in other ways. Thus, the sensor must 5 not necessarily be an influenza sensor. According to an alternative embodiment, the sensor could 5 For example, also have two electrodes in the suction channel 4 protrude, leaving the sensor 5 can detect a stream of electrically charged particles. Such sensors are known in the art, for example, as ion current sensors.

The measuring signal of the sensor 5 can by environmental parameters, operating parameters and / or device parameters of Saugreinigungsgerätes 1 influenced, in particular falsified, become. For example, when cleaning a carpet by means of Saugreinigungsgerätes arrive 1 not only dirt particles in the suction channel 4 but also fibers of the carpet, which are due to the at the suction mouth 3 release the prevailing negative pressure from the carpet. These fibers contribute to the determined particle concentration or amount, but are not an indication of a certain degree of contamination of the surface to be cleaned. Similar distortions of the detection result may be further due to environmental parameters of the environment, such as a humidity and / or a temperature at the location of Saugreinigungsgerätes 1 , revealed. Also relevant are operating parameters of the device, in particular a flow velocity within the suction channel 4 flowing suction air flow, a moving speed of the vacuum cleaning device 1 relative to the surface to be cleaned, an operating mode of the suction fan, an operating mode of the cleaning element 7 and the same. The device parameters influencing the detection result are, for example, one type of suction device in the vacuum cleaning device 1 used cleaning element 7 or a filter element. All these aforementioned parameters have an influence on the detection result of the sensor 5 wherein the parameters influence the detection result so that a higher or lower particle concentration and / or amount is determined than actually corresponds to the local conditions.

Therefore, the suction cleaning device proposed here by way of example is an example 1 with an evaluation device 6 equipped, which is adapted to apply in the determination of the particle concentration and / or quantity a correction value and / or an evaluation method, which represents one or more of the aforementioned environmental parameters, operating parameters and / or device parameters.

In order to determine now an actual particle concentration and / or amount, which is adjusted by disturbing influences, engages the evaluation 6 to a memory (not shown) containing correction factors to compensate for one or more of the aforementioned parameters. The correction factor here is, for example, a factor which corresponds to that from the unadjusted measurement signal of the sensor 5 is multiplied determined particle concentration and / or quantity. The memory can be a separate memory of Saugreinigungsgerätes 1 or be an external memory, such as a web server manufacturer of Saugreinigungsgerätes 1 , The memory contains a database of correction factors associated, for example, with different types of floor coverings to be cleaned. For example, a table may include correction values applicable to different types of carpets. In order to select a corresponding correction factor from this table, the evaluation device is required 6 a knowledge of the soil type of currently cleaned area. This knowledge can be the evaluation device 6 for example, from a ground notifier of the Saugreinigungsgerätes not shown 1 gain. This may be, for example, an image capture device such as a camera, or a reflection sensor which measures a reflectance of the surface to be cleaned. In the example shown here is a manually operated by a user Saugreinigungsgerät 1 , However, if an embodiment of a Saugreinigungsgerätes 1 is provided, wherein the Saugreinigungsgerät 1 is a mobile robot, information about the soil type of a surface to be cleaned can also be deposited in an area map that corresponds to a floor plan of the environment to be cleaned and the Saugreinigungsgerät 1 serves as a navigation and self-localization aid. Based on the map of the environment has the Saugreinigungsgerät 1 Knowing where in the area it is currently located and can take from the map of the area a soil type of the current location. The evaluation device 6 accesses this map of the area, acquires knowledge of the soil type and derives from the stored table a corresponding correction factor for that soil type.

This is where the vacuum cleaning device cleans 1 currently, for example, a carpet. For the type of carpet, the memory must be given a correction factor (as a multiplier), for example 0.85, to be applied, ie it is assumed that the material abrasion in cleaning this type of carpet accounts for approximately 20% of the actual amount of dirt, the sensor 5 So that detects 1.2 times the actual amount of dirt. The particle concentration and / or amount, which - adjusted by the material abrasion - occurs solely due to the contamination of the floor covering, thus corresponds to only about 85% of the measurement signal. Furthermore, the same table or also a further table, which is stored in the memory or in another memory, may contain further correction values which, for example, correct local climatic parameters. For example, the table may include correction factors for one at the current location of the vacuum cleaner 1 indicate the prevailing humidity and / or temperature. Particularly preferably, the evaluation device engages 6 external climate parameters available on the Internet on a public server. In this case, the evaluation device 6 a known current location of Saugreinigungsgerätes 1 to obtain corresponding climate data. To gain knowledge of his current whereabouts, the Saugreinigungsgerät 1 for example, have a GPS sensor. Furthermore, it is also possible that the vacuum cleaning device 1 Participant in a network of a variety of vacuum cleaning devices 1 is which information about current climate data to the vacuum cleaning device 1 send. Furthermore, the evaluation device 6 of the vacuum cleaning device 1 are also in communication with a device that measures a climate parameter itself. This device may for example be an air cleaner, which in the vicinity of the vacuum cleaning device 1 is positioned.

Furthermore, the evaluation device 6 in the determination of the adjusted particle concentration and / or particle quantity correction values for a current flow velocity of the within the suction channel 4 flowing suction air flow, for a current movement speed of the vacuum cleaning device 1 and / or for a mode of operation of the suction fan and / or the cleaning element 7 attention. Furthermore, it is also possible to use correction values that are characteristic of the type of cleaning element 7 and / or for the type and / or a cleaning state of a filter element of the Saugreinigungsgerätes 1 are. In addition to correction values, various evaluation methods can also be stored in the memory, which are advantageous in determining the particle concentration and / or quantity, depending on the existing environmental parameters, operating parameters and / or device parameters. These evaluation methods are mathematical methods that are particularly suitable for certain parameters in order to calculate a realistic measured value that has been cleared of disturbing influences.

For example, the speed of movement of Saugreinigungsgerätes 1 on the surface to be cleaned effects on a suitable evaluation method for the measuring signals of the sensor 5 to have. At a relatively high speed of movement of the vacuum cleaning device 1 usually a relatively narrow and at the same time high peak of the measurement signal is observed. At a lower movement speed, on the other hand, the sensor signal is rather wide and has a lower amplitude. The evaluation method takes into account this characteristic signal shape which is dependent on the movement speed and, for the further calculations, uses a time span within which the relevant amplitude changes of the measurement signal occur. At high speeds, the time is correspondingly lower than at lower speeds.

The correction values for certain operating parameters and / or device parameters can also be taken from a stored table. These relate to properties of one or more components of Saugreinigungsgerätes 1 which the particle concentration and / or amount within the suction channel 4 seemingly influence. This may, for example, the type of attachment used, a way of using this attachment with, for example, a specific setting of a cleaning element 7 or the like. The evaluation device 6 preferably has knowledge of the currently used components of Saugreinigungsgerätes 1 , For example, about a currently used header, and can remove corresponding correction factors from a stored table. The vacuum cleaning device 1 may comprise a detection device, which is the type of an attachment or other component of Saugreinigungsgerätes 1 recognizes and information about it to the evaluation 6 transmitted or provides this.

From one or more of the correction factors described above, the evaluation device 6 then, optionally using a selected evaluation method, a particle concentration and / or amount within the suction channel 4 which allows a conclusion on the actual, artifact-cleaned pollution of the currently cleaned area. Subsequently, the vacuum cleaning device 1 depending on the determined particle concentration and / or amount set an operating mode for the further cleaning of the surface to achieve a particularly satisfactory cleaning result.

LIST OF REFERENCE NUMBERS

1

vacuum cleaning

2

suction nozzle

3

saugmund

4

suction

5

sensor

6

evaluation

7

cleaning element

8th

basic unit

9

stalk

10

Handle

11

switch

12

casing

13

wheel

14

bristle

15

connecting area

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102008026884 B4 [0004]

Claims (10)

A suction cleaning device (1) having a suction nozzle (2), a suction fan and a suction channel (4) opening into a suction mouth (3), which provides a flow connection from the suction mouth (3) to the suction fan, wherein the suction channel (4) comprises a sensor ( 5) flowing to detect (through the suction passage 4) electrically charged particles, wherein the sensor (5) an evaluation device (6) for determining a particulate concentration and / or amount based on the detection result of the sensor (5) is associated, characterized in that in that the evaluation device (6) is set up in the determination of the particle concentration and / or quantity to apply a correction value and / or an evaluation method, which represent an environmental parameter, operating parameters and / or device parameters influencing the detection result. Vacuum cleaning device (1) after Claim 1 , characterized in that the correction value is a characteristic of the type of a floor covering to be cleaned correction factor. Vacuum cleaning device (1) after Claim 1 or 2 , characterized in that the correction value is a for a climate parameter, in particular a humidity and / or a temperature at the location of the vacuum cleaning device (1) characteristic correction factor. Vacuum cleaning device (1) according to any one of the preceding claims, characterized in that the correction value for a flow rate of the suction air flow flowing inside the suction channel (4) and / or for a movement speed of the Saugreinigungsgerätes (1) relative to the surface to be cleaned and / or an operating mode of the suction fan and / or a cleaning element (7) of the vacuum cleaning device (1) is a characteristic correction factor. Vacuum cleaning device (1) according to one of the preceding claims, characterized in that the correction value is a characteristic of a type of cleaning element (7) and / or a type and / or a cleaning state of a filter element correction factor. Vacuum cleaning device (1) according to one of the preceding claims, characterized in that the evaluation method, in particular a period considered during the evaluation period for the detection of electrically charged particles, by a movement speed of the vacuum cleaning device (1) is determined relative to the surface to be cleaned. Vacuum cleaning device (1) according to one of the preceding claims, characterized by a memory in which a corresponding to an environmental parameter and / or operating parameters and / or device parameters correction value and / or an evaluation method are stored, wherein the evaluation device (6) is arranged on the To access memory. Vacuum cleaning device (1) according to one of the preceding claims, characterized in that the vacuum cleaning device (1) is an automatically moving vacuum cleaning device (1), wherein the vacuum cleaning device (1) has a memory in which an environmental map of an environment of the vacuum cleaning device (1) is stored, which map has information about a position-dependent type of flooring and / or a position-dependent correction value for the type of floor covering. Vacuum cleaning device (1) according to one of the preceding claims, characterized by a detection device which is set up to determine a position, an environmental parameter, an operating parameter and / or a device parameter, which determines the particle concentration and / or quantity determined by the evaluation device (6) affected. Vacuum cleaning device (1) according to one of the preceding claims, characterized by a communication device which is set up to establish a communication connection to an external memory and to access an environmental parameter stored therein and / or an environmental map of the vacuum cleaning device (1) stored therein.

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