EP3821778A1 - Vacuum cleaner and method for operating same - Google Patents
Vacuum cleaner and method for operating same Download PDFInfo
- Publication number
- EP3821778A1 EP3821778A1 EP20203197.7A EP20203197A EP3821778A1 EP 3821778 A1 EP3821778 A1 EP 3821778A1 EP 20203197 A EP20203197 A EP 20203197A EP 3821778 A1 EP3821778 A1 EP 3821778A1
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- speed
- vacuum cleaner
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- power
- fan
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004140 cleaning Methods 0.000 claims abstract description 19
- 238000000926 separation method Methods 0.000 claims abstract description 8
- 239000000428 dust Substances 0.000 description 10
- 238000005265 energy consumption Methods 0.000 description 9
- 238000001514 detection method Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
- A47L9/2805—Parameters or conditions being sensed
- A47L9/2821—Pressure, vacuum level or airflow
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
- A47L9/2805—Parameters or conditions being sensed
- A47L9/2831—Motor parameters, e.g. motor load or speed
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
- A47L9/2836—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means characterised by the parts which are controlled
- A47L9/2842—Suction motors or blowers
Definitions
- the invention relates to a vacuum cleaner for cleaning and caring for floor surfaces with a fan for generating a negative pressure to pick up dirt by means of an air stream, a separation system for cleaning the picked up air from dirt and a frequency converter for setting the power of the fan.
- the invention also relates to a method for setting the fan power of a vacuum cleaner.
- vacuum cleaners are used to clean surfaces such as textile floor coverings and smooth floors.
- a floor nozzle of the vacuum cleaner is continuously pushed back and forth on a floor surface.
- energy classes are specified for household vacuum cleaners in which significantly lower electrical power consumption is permitted.
- consumption measurements are carried out on two different floor coverings for classification in the energy classes. The electrical energy consumption when vacuuming the two different floors is then included in the evaluation for classification in the energy classes of the energy label. Optimizing the energy consumption on the two different floor coverings thus ensures that the vacuum cleaner is particularly well classified in terms of energy classes.
- Such an optimization of the energy consumption with regard to a good classification should provide a low suction power when using a smooth floor nozzle, while a higher suction power can be provided when using the universal nozzle in order to meet the criteria.
- the EP 3 351 160 A1 describes a vacuum cleaner and a method for operating a vacuum cleaner, where the suction power is regulated via the detection of the suction nozzle used. In the solution described here, this takes place via a vacuum switch that is queried to detect the suction nozzle.
- This detection of the suction nozzle is not very fault-tolerant, so that, for example, brief suction on a curtain or doormat can switch the vacuum switch in a characteristic manner like a known suction nozzle, which leads to an undesirable reduction in suction power, which can then only be corrected by manual intervention by the user in the power level selection can.
- the invention thus presents the problem of specifying an improved vacuum cleaner and an improved method for setting a fan power of a vacuum cleaner.
- a vacuum cleaner having the features of claim 1 and a method for setting a fan power of a vacuum cleaner according to claim 6.
- a vacuum generated by the fan is specified as a model-specific setpoint curve as a function of the electrical power and speed of the fan to set the power of the fan and the frequency converter uses the setpoint curve to transfer a specified setpoint for the vacuum based on the electrical power and speed stored for this purpose
- the specification of electrical power and checking of the established speed is set, the energy consumption of the vacuum cleaner can be optimized when using different suction nozzles so that the vacuum cleaner works energy-efficiently in the cleaning mode and at the same time achieves satisfactory cleaning performance.
- the setting speed can be checked depending on the power provided by the frequency converter, in order to easily draw conclusions about the suction nozzle used and the to maintain the resulting negative pressure.
- This makes it very easy to implement negative pressure control and suction nozzle detection that do not require a negative pressure switch, since the relevant parameters for setting a negative pressure setpoint are known from the power provided and the speed of the fan being established by the frequency converter.
- the electrical power is measured in the frequency converter's intermediate circuit. If the fan drive is a BLDC or synchronous motor, its speed is known to the frequency converter. With a PMDC motor, a frequency converter can determine the speed via the commutation.
- a defined negative pressure can be set by setting the blower output using the model-specific setpoint curve.
- the model-specific setpoint curve must be determined during the development and construction of the vacuum cleaner and can, for example, be stored as an algorithm or a table, preferably in the software of the frequency converter.
- the required electrical power, which the converter makes available to the fan, and the speed of the fan for the respective vacuum cleaner model, which is established at the given negative pressure are stored.
- the fan can be set very easily to generate a defined negative pressure, since the setting variables are available to the frequency converter and the setpoint for the negative pressure is maintained during the development and construction of the vacuum cleaner for the setting variables was ensured in the laboratory. Since the model-specific target value curve used is determined for everyone in the laboratory If identical vacuum cleaner models and suction nozzles can be used, such an examination only needs to be repeated in the event of deviations in the series that affect the negative pressure generated by the blower.
- the different floor areas can be covered by a textile floor covering, such as a carpet or carpeting, or by a smooth floor, such as. B. a wooden parquet, laminate or PVC flooring can be formed.
- the vacuum cleaner has a fan for generating a negative pressure through which the floor nozzle, which is guided over a floor surface to be cleaned, picks up dust and dirt from the floor surface.
- the floor nozzle is moved back and forth in the processing direction by the user by means of pushing and pulling movements. This causes the floor nozzle to slide over the floor surface to be cleaned.
- the user can, for example, handle a handle of the vacuum cleaner connected to the suction tube.
- the suction mouth of the floor nozzle is elongated and runs essentially transversely to the processing direction.
- elongated means that the preferably essentially rectangular suction mouth has a greater length transverse to the machining direction than the width in the machining direction.
- the suction mouth is preferably between 10 and 30 cm long transversely to the processing direction.
- the vacuum cleaner can also be designed as an independently driving vacuum cleaner, in particular a vacuum robot, so that the processing direction of the floor nozzle corresponds to the direction of travel of the independently driving vacuum cleaner.
- a vacuum cleaner housing of the vacuum cleaner can have a dust receiving chamber in which the dust received via the floor nozzle can be collected in a dust bag, for example.
- the setpoint curve has an at least partially linear course as a function of power and speed.
- the setpoint curve can also have a different course, but it is precisely with the linear course that a power and speed pair can be determined very easily, with which a specified setpoint for the negative pressure can be achieved.
- the change in the electrical power by the frequency converter leads to simple Comprehensible speed changes of the fan while maintaining the specified target value for the negative pressure generated by the fan.
- the setpoint curve has a different course in sections as a function of power and speed.
- differently designed suction nozzles can be operated very easily on different sections of the setpoint curve, so that the setting of the blower output can vary depending on the adapted suction nozzle.
- a preferred embodiment of the invention provides that the setpoint curve provides a greater increase in the established speed in a first section when the power is increased by a fixed value in a lower power range than in a second section, where when the power is increased by the fixed value In an upper power range, a smaller increase in the established speed is provided than in the first section.
- an adaptable suction nozzle designed as a smooth floor nozzle can be operated in the first section, the change in the electrical power here providing greater speed changes while maintaining the vacuum setpoint than is the case in the second section.
- a further suction nozzle designed as a universal nozzle could be operated, so that when the electrical power changes, lower speed changes are expected while maintaining the negative pressure setpoint.
- the vacuum cleaner has an adaptable suction nozzle designed as a smooth floor nozzle and at least one further, adaptable suction nozzle, the smooth floor nozzle having a reduced aperture diameter compared to the further suction nozzle.
- the limiting cross-section for the air flow generated by the fan is reduced via the reduced diaphragm diameter in such a way that the speeds that are established can be assigned to a smooth-floor nozzle when the electrical power changes via the frequency converter.
- the setpoint curve for the vacuum control is parameterized in such a way that the required electrical power is set when a smooth floor nozzle is used.
- the smooth floor nozzle is adapted to the vacuum cleaner.
- the setting of the blower can now be limited via the specification of the power so that the criteria for a good classification of the vacuum cleaner with the Energy classes can be adhered to without any problems, with the fan still being able to be operated optimized for the adapted suction nozzle to achieve good cleaning results and satisfactory handling.
- the negative pressure specified in the setpoint curve can be used to generate an air flow which, with different suction nozzles connected to the vacuum cleaner, offers optimized dirt pick-up while at the same time adhering to the requirements created by the energy label to maintain a defined energy consumption.
- the invention also relates to a method for setting the fan power of a vacuum cleaner, which has already been described in more detail below, for cleaning and caring for floor surfaces, a frequency converter being provided for setting the power of the fan, with a vacuum generated by the fan to set the power of the fan is specified as a model-specific setpoint curve depending on the electrical power and speed of the fan and the frequency converter uses the setpoint curve to set a specified setpoint for the negative pressure by specifying the power and checking the speed that is established based on the power and speed stored for this purpose.
- a vacuum cleaner operated with this method can be optimized with regard to energy consumption when using different suction nozzles in such a way that the criteria of the energy label for a good classification of the vacuum cleaner with regard to energy consumption are complied with and the vacuum cleaner also ensures satisfactory cleaning and care of floor surfaces.
- the setting of the blower output to a negative pressure required for cleaning the floor surfaces can be achieved via the model-specific setpoint curve depending on the output made available by the frequency converter and the speed that is established. This makes it easy to draw conclusions about the suction nozzle used and the negative pressure that is established.
- the vacuum control and the suction nozzle detection are easy to implement because this solution does not require a vacuum switch.
- the relevant variables for setting a negative pressure setpoint are known to the frequency converter from the power provided and the speed of the fan that is established.
- the variables can be measured directly, for example using a sensor for detecting the speed of the fan.
- the variables can also be determined indirectly, for example using an algorithm that evaluates the course of the motor currents or voltages.
- the setting of the blower output via the model-specific setpoint curve enables a defined negative pressure to be set.
- the model-specific target value curve must be determined once in the laboratory during the development and construction of the vacuum cleaner.
- the setpoint curve for the negative pressure can preferably be stored as an algorithm or as a table, for example in the software of the frequency converter.
- the model-specific The setpoint curve contains the required electrical power that the converter makes available to the fan and the fan speed that is established at a given negative pressure. With the frequency converter, the fan can be set very easily by storing the power and the speed to generate a defined negative pressure, since the setting variables are available to the frequency converter.
- the correct setting values should be determined during the development and construction of the vacuum cleaner in the laboratory.
- the model-specific setpoint curve determined in this way can be used for all identical vacuum cleaner models, but must be repeated in the event of deviations in the series that affect the negative pressure generated by the blower.
- the embodiment of the method is further advantageous in that a suction nozzle that can be adapted with the vacuum cleaner is recognized when it is adapted with the vacuum cleaner on the basis of the power specified by the frequency converter and the rotational speed that is established.
- the specified power can then be limited when setting the blower so that the energy consumption for a good classification of the vacuum cleaner with the energy label is easily adhered to, while still achieving a good cleaning result and satisfactory handling of the suction nozzle .
- An air flow can be generated via the negative pressure specified in the setpoint curve, which ensures an optimized absorption of dirt even with different suction nozzles connected to the vacuum cleaner, while at the same time the defined compliance with the energy consumption requirements created by the energy label is achieved.
- An advantageous embodiment of the method provides that the power is reduced in the case of an adaptable suction nozzle designed as a smooth floor nozzle. By reducing the fan power when using the smooth floor nozzle, a satisfactory cleaning result can be ensured on smooth floors with a low power consumption.
- the power is increased again when the conditions for the specified power and the established speed for the adaptable suction nozzle designed as a smooth floor nozzle are no longer met.
- a preferred embodiment of the method provides that the power is changed continuously. With the continuous change in performance, strong fluctuations in vacuum and speed, which impair the user experience, can be avoided. In contrast to the gradual adjustment of the output, the continuous change ensures less perceptible interventions in the control of the blower.
- FIG. 1 Designated with the reference numeral 1, a vacuum cleaner 1 with an adapted floor nozzle 5 is shown purely schematically.
- the representation according to Figure 1 shows a vacuum cleaner 1 according to the invention with a floor nozzle 5 connected to the vacuum cleaner 1.
- the vacuum cleaner 1 shown in the exemplary embodiment is a so-called canister vacuum cleaner.
- the floor nozzle 5 is connected here via its connecting piece 6 to a suction pipe 7, which is preferably designed to be telescopic.
- the floor nozzle 5 has its own housing 9 that is independent of the vacuum cleaner housing 8, 8a.
- the telescopic suction tube 7 merges into a handle 10 to which a suction hose 11 is connected, which is connected to the vacuum cleaner housing 8, 8a.
- the vacuum cleaner has a frequency converter (not shown) for setting the power of the fan (not shown).
- a separation system 2 is provided in the housing 8, 8a, which in the exemplary embodiment is designed as a dust bag. This separation system 2 is located in a dust space 13 formed by the housing parts 8, 8a and the vacuum cleaner 1.
- This dust space 13 is accessible and opened by a folding mechanism between the vacuum cleaner housing parts 8 and 8a, so that the Separation system 2 is visible and removable.
- the dust chamber 13 is closed and a negative pressure is generated.
- the air flow generated by the negative pressure is freed of dirt and grime in the separation system 2 and passed out of the vacuum cleaner 1 via an exhaust air grille 14.
- a user interface 4 in the form of a step switch 4.
- This step circuit 4 comprises switches that are sufficiently large that a user can operate them with his foot.
- the step switch 4 usually also has a switch for actuating the automatic winding mechanism (not shown) for the connecting cable 12 that is integrated in the vacuum cleaner housing 8, 8a.
- a user interface 3 in the form of a manual control 3, with which the functions of the vacuum cleaner 1 can be activated.
- the vacuum cleaner 1 can be switched on and off via the manual control 3 and power levels of the fan (not shown) can be selected.
- a user of the vacuum cleaner 1 can take hold of it by the handle 10 and thus push the floor nozzle 5 back and forth by means of a pushing and pulling movement in the machining direction 15 marked as a double arrow in order to clean the floor surface 30.
- the floor nozzle 5 slides over the floor surface 30 to be cleaned.
- the underside of the floor nozzle 5 slides over the floor surface 30, while the underside of hard floors floats over these floor surfaces 30 at a distance, possibly with spacer bristles.
- the floor nozzle 5 also has support elements 16 in the form of wheels, which ensure a defined distance between the underside and the floor surfaces 30 to be cleaned and easy handling when pushing the floor nozzle 5 back and forth.
- a negative pressure P1, P2, P3 generated by the fan is specified as a model-specific setpoint curve K1, K2, K3 as a function of electrical power p and speed n.
- Such setpoint curves are in Figure 2 shown as an example of speed / power curves for different negative pressures.
- These setpoint curves K1, K2, K3 can easily be set in the laboratory, for example by arranging a pressure sensor in the suction pipe 7 ( Fig. 1 ) determine. The measurements shown show that with a set power p, depending on the volume flow, influenced by the suction nozzle 5 ( Fig. 1 ) and the floor covering 30 ( Fig.
- a setpoint curve K1, K2, K3 can be measured as a characteristic curve for the desired negative pressure P1, P2, P3 for these value pairs of power p and speed n and stored as a table or algorithm in the frequency converter software.
- the frequency converter can then, on the basis of the power p and speed n stored for the negative pressure P1, P2, P3, using the setpoint curve K1, K2, K3, a predetermined setpoint for the negative pressure P1, P2, P3 by specifying power p and checking the setting up Set speed n.
- the setpoint curve K1 shows the course at a negative pressure P1 of, for example, 70 mbar
- the setpoint curve K2 shows the course at a negative pressure P2 of, for example, 80 mBar
- the setpoint curve K3 can mark the course at a negative pressure P3 of 90 mbar.
- the setpoint curves K1, K2 and K3 shown have a linear profile as a function of power p and speed n.
- the negative pressure curves, which serve as the nominal value, can also have other curve courses.
- the setpoint curve can also be adjusted in such a way that, as in Figure 3 shown for the setpoint curve K4, offers an optimized power p for different suction nozzles.
- the setpoint curve K4 shown here has an at least sectionally linear course as a function of power p and speed n, the sections having a different course as a function of power p and speed n.
- a first section A1 of the lower power range when the power p is increased by a greater increase in the established speed n than in a second section A2 in an upper power range, where when the power p increases, a smaller increase in the established speed n than provided in the first section A1.
- the one here in Figure 3 The course of the setpoint curve K4 shown can be used, for example, to operate a smooth-floor nozzle 5 ( Fig. 1 ) formed adaptable suction nozzle can be used in the first section A1.
- the changes in the electrical power p result in greater changes in speed while maintaining the negative pressure setpoint P4.
- a further suction nozzle 17, for example designed as a universal nozzle Fig.
- the smooth floor nozzle 5 ( Fig. 1 ) can have a reduced orifice diameter compared to a further suction nozzle 17.
- the cross-section that limits the air flow generated by the fan is reduced by means of this reduced diaphragm diameter. Via this reduction in the cross-section, the speeds n that are established when the electrical power p changes via the frequency converter can be clearly transferred to the smooth-floor nozzle 5 ( Fig. 1 ) assign.
- the characteristic relationship that can be achieved with the reduced diaphragm diameter between the specified power p and the speed n of the blower that is established can be determined very quickly by the frequency converter, so that a corresponding transmission to the vacuum cleaner 1 Fig. 1 ) adapted smooth floor nozzle 5 ( Fig. 1 ) is recognized quickly.
- the setting of the blower can then be limited by specifying the power p so that the criteria for a good classification of the vacuum cleaner 1 ( Fig. 1 ) can be adhered to with the energy classes without any problems. Since the smooth floor nozzle 5 ( Fig.
- the smooth floor nozzle 5 ( Fig. 1 ) is very dense on smooth floors due to the reduced aperture diameter, can be adjusted with setting the blower power p it is very easy to identify the smooth floor nozzle 5 ( Fig. 1 ) can be achieved.
- the lower limit for the power p can be selected for this purpose in such a way that it corresponds exactly to the desired value for the smooth floor measurement for the energy label, e.g. B. 70 W.
- the upper limit for the power p can be selected so that it corresponds exactly to the value for the carpet measurement, e.g. B. 370 W. In this way, the fan can still be operated optimized for the adapted suction nozzle to achieve good cleaning results and satisfactory handling.
- Figure 4 an example of a power control is shown. If the negative pressure P1, P2, P3, P4 is to be regulated and the existing power regulation maintained, the setpoint value of the power p must be adapted in such a way that the appropriate negative pressure P1, P2, P3, P4 is always set.
- the setpoint curve K4 is turned off Figure 3 used to infer the associated speed n from the currently available power p, so that the desired negative pressure P4 is established.
- This target speed n is then compared with the actual speed. If the speed n is too low, the target power p is increased. If the speed n is too high, the target power p is reduced.
- the proposed solution offers advantages over the prior art, since the power p only in connection with the user behavior, for example by pressing a button on a user interface 3, 4 ( Fig. 1 ), Adapting a suction nozzle 5, 17 ( Fig. 1 ) and attach the floor nozzle 5 ( Fig. 1 ) on the floor surface to be cleaned 30 ( Fig. 1 ) is changed.
- the power p is preferably not changed in stages, but rather continuously. After detecting a smooth floor nozzle 5 ( Fig. 1 ) the power p is increased again if the conditions for the smooth floor nozzle 5 ( Fig. 1 ) are no longer given.
- the floor nozzle can also be designed as part of a self-propelled vacuum cleaner.
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Abstract
Die Erfindung betrifft einen Staubsauger (1) zur Reinigung und Pflege von Bodenflächen (30) mit einem Gebläse zur Erzeugung eines Unterdruckes zur Aufnahme von Schmutz mittels eines Luftstromes, einem Abscheidesystem (2) zur Reinigung der aufgenommenen Luft vom Schmutz und einen Frequenzumrichter zur Einstellung der elektrischen Leistung (p) des Gebläses, wobei zur Einstellung der elektrischen Leistung (p) des Gebläses ein vom Gebläse erzeugter Unterdruck (P1, P2, P3, P4) als modelspezifische Sollwertkurve (K1, K2, K3, K4) in Abhängigkeit von elektrischer Leistung (p) und Drehzahl (n) vorgegeben ist und der Frequenzumrichter auf Basis von hierzu hinterlegter elektrischer Leistung (p) und Drehzahl (n) anhand der Sollwertkurve (K1, K2, K3, K4) einen vorgegeben Sollwert für den Unterdruck (P1, P2, P3, P4) über die Vorgabe von elektrischer Leistung (p) und Überprüfung der sich einrichtenden Drehzahl (n) einstellt sowie ein Verfahren zur Einstellung einer Gebläseleistung eines Staubsaugers (1).The invention relates to a vacuum cleaner (1) for cleaning and caring for floor surfaces (30) with a blower for generating a negative pressure to pick up dirt by means of an air stream, a separation system (2) for cleaning the picked up air from dirt and a frequency converter for setting the electrical power (p) of the fan, whereby to set the electrical power (p) of the fan, a negative pressure generated by the fan (P1, P2, P3, P4) as a model-specific setpoint curve (K1, K2, K3, K4) as a function of electrical power (p) and speed (n) is specified and the frequency converter based on the stored electrical power (p) and speed (n) using the setpoint curve (K1, K2, K3, K4) a specified setpoint for the negative pressure (P1, P2 , P3, P4) by specifying electrical power (p) and checking the established speed (n) as well as a method for setting a fan power of a vacuum cleaner (1).
Description
Die Erfindung betrifft einen Staubsauger zur Reinigung und Pflege von Bodenflächen mit einem Gebläse zur Erzeugung eines Unterdruckes zur Aufnahme von Schmutz mittels eines Luftstromes, einem Abscheidesystem zur Reinigung der aufgenommenen Luft vom Schmutz und einen Frequenzumrichter zur Einstellung der Leistung des Gebläses. Außerdem betrifft die Erfindung ein Verfahren zur Einstellung einer Gebläseleistung eines Staubsaugers.The invention relates to a vacuum cleaner for cleaning and caring for floor surfaces with a fan for generating a negative pressure to pick up dirt by means of an air stream, a separation system for cleaning the picked up air from dirt and a frequency converter for setting the power of the fan. The invention also relates to a method for setting the fan power of a vacuum cleaner.
Im privaten Haushalt sowie im Gewerbe kommen Staubsauger zur Reinigung von Flächen wie textilen Bodenbelägen und glatten Böden zum Einsatz. Dabei wird zur Staubaufnahme eine Bodendüse des Staubsaugers auf einer Bodenfläche kontinuierlich vor- und zurückgeschoben. Im Zuge des Energy-Labels für Staubsauger werden für Haushaltsstaubsauger Energieklassen vorgegeben, in denen wesentlich niedrigere elektrische Aufnahmeleistungen zulässig sind. Außerdem werden zur Einordung in die Energieklassen Verbrauchsmessungen auf zwei unterschiedlichen Bodenbelägen durchgeführt. Der elektrische Energieverbrauch beim Saugen der beiden unterschiedlichen Böden geht dann in die Bewertung zur Einordnung in die Energieklassen des Energy-Labels ein. Eine Optimierung des Energieverbrauchs auf den beiden unterschiedlichen Bodenbelägen sorgt somit für eine besonders gute Klassifizierung des Staubsaugers bei den Energieklassen. Eine solche Optimierung der Energieverbräuche hinsichtlich einer guten Klassifizierung sollte bei Verwendung einer Glattbodendüse eine niedrige Saugleistung vorsehen, während bei Verwendung der Universaldüse eine höhere Saugleistung vorgesehen werden kann, um die Kriterien zu erfüllen.In private households as well as in business, vacuum cleaners are used to clean surfaces such as textile floor coverings and smooth floors. To collect dust, a floor nozzle of the vacuum cleaner is continuously pushed back and forth on a floor surface. In the course of the energy label for vacuum cleaners, energy classes are specified for household vacuum cleaners in which significantly lower electrical power consumption is permitted. In addition, consumption measurements are carried out on two different floor coverings for classification in the energy classes. The electrical energy consumption when vacuuming the two different floors is then included in the evaluation for classification in the energy classes of the energy label. Optimizing the energy consumption on the two different floor coverings thus ensures that the vacuum cleaner is particularly well classified in terms of energy classes. Such an optimization of the energy consumption with regard to a good classification should provide a low suction power when using a smooth floor nozzle, while a higher suction power can be provided when using the universal nozzle in order to meet the criteria.
Die
Der Erfindung stellt sich somit das Problem, einen verbesserten Staubsauger und ein verbessertes Verfahren zur Einstellung einer Gebläseleistung eines Staubsaugers anzugeben.The invention thus presents the problem of specifying an improved vacuum cleaner and an improved method for setting a fan power of a vacuum cleaner.
Erfindungsgemäß wird dieses Problem durch einen Staubsauger mit den Merkmalen des Patentanspruchs 1 und ein Verfahren zur Einstellung einer Gebläseleistung eines Staubsaugers gemäß Anspruch 6 gelöst. Dadurch, dass zur Einstellung der Leistung des Gebläses ein vom Gebläse erzeugter Unterdruck als modelspezifische Sollwertkurve in Abhängigkeit von elektrischer Leistung und Drehzahl des Gebläses vorgegeben ist und der Frequenzumrichter auf Basis von hierzu hinterlegter elektrischer Leistung und Drehzahl anhand der Sollwertkurve einen vorgegebenen Sollwert für den Unterdruck über die Vorgabe von elektrischer Leistung und Überprüfung der sich einrichtenden Drehzahl einstellt, kann der Energieverbrauch des Staubsaugers bei Verwendung unterschiedlicher Saugdüsen dahingehend optimiert werden, dass der Staubsauger im Reinigungsbetrieb energieeffizient arbeitet und gleichzeitig zufriedenstellende Reinigungsleistungen erreicht.According to the invention, this problem is solved by a vacuum cleaner having the features of
Mit der Einstellung der Gebläseleistung mittels der elektrischen Leistung des Gebläses über eine modelspezifische Sollwertkurve für einen zur Reinigung erforderlichen Unterdruck, kann in Abhängigkeit von der vom Frequenzumrichter zur Verfügung gestellten Leistung, die sich einrichtende Drehzahl überprüft werden, um einfach Rückschlüsse über die verwendete Saugdüse und den sich einstellenden Unterdruck zu erhalten. Hierdurch ist sehr einfach eine Unterdruckregelung und Saugdüsenerkennung realisierbar, die ohne einen Unterdruckschalter auskommt, da die maßgeblichen Größen zur Einstellung eines Unterdrucksollwertes durch die zur Verfügung gestellte Leistung und die sich einrichtende Drehzahl des Gebläses seitens des Frequenzumrichters bekannt sind. Hierzu wird die elektrische Leistung im Zwischenkreis des Frequenzumrichters gemessen. Falls es sich bei dem Antrieb des Gebläses um einen BLDC oder Synchronmotor handelt ist deren Drehzahl dem Frequenzumrichter bekannt. Bei einem PMDC-Motor kann ein Frequenzumrichter die Drehzahl über die Kommutierung ermitteln.With the setting of the blower power by means of the electrical power of the blower via a model-specific setpoint curve for a negative pressure required for cleaning, the setting speed can be checked depending on the power provided by the frequency converter, in order to easily draw conclusions about the suction nozzle used and the to maintain the resulting negative pressure. This makes it very easy to implement negative pressure control and suction nozzle detection that do not require a negative pressure switch, since the relevant parameters for setting a negative pressure setpoint are known from the power provided and the speed of the fan being established by the frequency converter. For this purpose, the electrical power is measured in the frequency converter's intermediate circuit. If the fan drive is a BLDC or synchronous motor, its speed is known to the frequency converter. With a PMDC motor, a frequency converter can determine the speed via the commutation.
Mit der Einstellung der Gebläseleistung anhand der modellspezifischen Sollwertkurve kann ein definierter Unterdruck eingestellt werden. Die modellspezifische Sollwertkurve muss bei der Entwicklung und Konstruktion des Staubsaugers ermittelt werden und kann beispielsweise als Algorithmus oder als Tabelle bevorzugt in der Software des Frequenzumrichters abgelegt sein. In dieser modellspezifischen Sollwertkurve sind die erforderliche elektrische Leistung, die der Umrichter dem Gebläse zur Verfügung stellt, und die sich beim vorgegebenen Unterdruck einrichtende Drehzahl des Gebläses für das jeweilige Staubsaugermodell hinterlegt. Mit der Hinterlegung der Leistung und der Drehzahl in dem Frequenzumrichter kann das Gebläse sehr einfach zur Erzeugung eines definierten Unterdruckes eingestellt werden, da die Einstellgrößen dem Frequenzumrichter zur Verfügung stehen und die Einhaltung des Sollwertes für den Unterdruck bei der Entwicklung und Konstruktion des Staubsaugers für die Einstellgrößen im Labor sichergestellt wurde. Da die genutzte modellspezifische Sollwertkurve nach der Ermittlung im Labor für alle baugleichen Staubsaugermodelle und Saugdüsen verwendet werden kann, muss eine solche Untersuchung nur bei Abweichungen der Baureihen wiederholt werden, die Einfluss auf den vom Gebläse erzeugten Unterdruck haben.A defined negative pressure can be set by setting the blower output using the model-specific setpoint curve. The model-specific setpoint curve must be determined during the development and construction of the vacuum cleaner and can, for example, be stored as an algorithm or a table, preferably in the software of the frequency converter. In this model-specific setpoint curve, the required electrical power, which the converter makes available to the fan, and the speed of the fan for the respective vacuum cleaner model, which is established at the given negative pressure, are stored. By storing the power and the speed in the frequency converter, the fan can be set very easily to generate a defined negative pressure, since the setting variables are available to the frequency converter and the setpoint for the negative pressure is maintained during the development and construction of the vacuum cleaner for the setting variables was ensured in the laboratory. Since the model-specific target value curve used is determined for everyone in the laboratory If identical vacuum cleaner models and suction nozzles can be used, such an examination only needs to be repeated in the event of deviations in the series that affect the negative pressure generated by the blower.
Die unterschiedlichen Bodenflächen können durch einen textilen Bodenbelag, wie einen Teppich oder Teppichboden, oder durch einen Glattboden, wie z. B. ein Holzparkett, Laminat oder einen PVC-Bodenbelag, gebildet werden.The different floor areas can be covered by a textile floor covering, such as a carpet or carpeting, or by a smooth floor, such as. B. a wooden parquet, laminate or PVC flooring can be formed.
Der Staubsauger weist ein Gebläse zur Erzeugung eines Unterdruckes auf, durch den die über eine zu reinigende Bodenfläche geführte Bodendüse Staub und Schmutz von der Bodenfläche aufnimmt. Hierzu wird die Bodendüse durch den Benutzer mittels Schub- und Zugbewegungen in Bearbeitungsrichtung vor und zurückbewegt. Hierdurch gleitet die Bodendüse über die zu reinigende Bodenfläche. Der Benutzer kann dazu beispielsweise einen mit dem Saugrohr verbundenen Griff des Staubsaugers handhaben. Damit die Reinigung und Pflege des Bodenbelags möglichst effektiv ausgeführt werden kann, ist der Saugmund der Bodendüse länglich ausgebildet und verläuft im Wesentlichen quer zur Bearbeitungsrichtung. Länglich ausgebildet bedeutet in diesem Zusammenhang, dass der vorzugsweise im Wesentlichen rechteckige Saugmund eine größere Länge quer zur Bearbeitungsrichtung aufweist, als Breite in Bearbeitungsrichtung. Der Saugmund ist vorzugsweise zwischen 10 und 30 cm quer zur Bearbeitungsrichtung lang.The vacuum cleaner has a fan for generating a negative pressure through which the floor nozzle, which is guided over a floor surface to be cleaned, picks up dust and dirt from the floor surface. For this purpose, the floor nozzle is moved back and forth in the processing direction by the user by means of pushing and pulling movements. This causes the floor nozzle to slide over the floor surface to be cleaned. For this purpose, the user can, for example, handle a handle of the vacuum cleaner connected to the suction tube. So that the cleaning and care of the floor covering can be carried out as effectively as possible, the suction mouth of the floor nozzle is elongated and runs essentially transversely to the processing direction. In this context, elongated means that the preferably essentially rectangular suction mouth has a greater length transverse to the machining direction than the width in the machining direction. The suction mouth is preferably between 10 and 30 cm long transversely to the processing direction.
Der Staubsauger kann auch als selbstständig fahrender Staubsauger, insbesondere Saugroboter, ausgebildet sein, sodass die Bearbeitungsrichtung der Bodendüse der Fahrtrichtung des selbstständig fahrenden Staubsaugers entspricht. Ein Staubsaugergehäuse des Staubsaugers kann eine Staubaufnahmekammer aufweisen, in welcher der über die Bodendüse aufgenommene Staub beispielsweise in einem Staubbeutel gesammelt werden kann.The vacuum cleaner can also be designed as an independently driving vacuum cleaner, in particular a vacuum robot, so that the processing direction of the floor nozzle corresponds to the direction of travel of the independently driving vacuum cleaner. A vacuum cleaner housing of the vacuum cleaner can have a dust receiving chamber in which the dust received via the floor nozzle can be collected in a dust bag, for example.
Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden abhängigen Ansprüchen. Es ist darauf hinzuweisen, dass die in den Ansprüchen einzeln aufgeführten Merkmale auch in beliebiger und technologisch sinnvoller Weise miteinander kombiniert werden können und somit weitere Ausgestaltungen der Erfindung aufzeigen.Advantageous refinements and developments of the invention emerge from the following dependent claims. It should be pointed out that the features listed individually in the claims can also be combined with one another in any desired and technologically sensible manner and thus show further embodiments of the invention.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass die Sollwertkurve in Abhängigkeit von Leistung und Drehzahl einen zumindest abschnittsweise linearen Verlauf aufweist. Die Sollwertkurve kann auch einen anderen Verlauf haben, aber gerade mit dem linearen Verlauf kann sehr einfach ein Leistungs- und Drehzahl-Paar ermittelt werden, bei dem sich ein vorgegebener Sollwert für den Unterdruck erreichen lässt. Die Veränderung der elektrischen Leistung durch den Frequenzumrichter führt zu einfach nachvollziehbaren Drehzahländerungen des Gebläses bei Einhaltung des vorgegebenen Sollwerts für den vom Gebläse erzeugten Unterdruck.According to an advantageous embodiment of the invention, it is provided that the setpoint curve has an at least partially linear course as a function of power and speed. The setpoint curve can also have a different course, but it is precisely with the linear course that a power and speed pair can be determined very easily, with which a specified setpoint for the negative pressure can be achieved. The change in the electrical power by the frequency converter leads to simple Comprehensible speed changes of the fan while maintaining the specified target value for the negative pressure generated by the fan.
Eine vorteilhafte Ausführung der Erfindung ist, dass die Sollwertkurve in Abhängigkeit von Leistung und Drehzahl einen abschnittsweise unterschiedlichen Verlauf aufweist. Mit einem abschnittsweise unterschiedlichen Verlauf der Sollwertkurve für den vom Gebläse erzeugten Unterdruck, können unterschiedlich ausgebildete Saugdüsen sehr einfach auf unterschiedlichen Abschnitten der Sollwertkurve betrieben werden, sodass die Einstellung der Gebläseleistung abhängig von der adaptierten Saugdüse unterschiedlich verlaufen kann.An advantageous embodiment of the invention is that the setpoint curve has a different course in sections as a function of power and speed. With a section-wise different course of the setpoint curve for the negative pressure generated by the fan, differently designed suction nozzles can be operated very easily on different sections of the setpoint curve, so that the setting of the blower output can vary depending on the adapted suction nozzle.
Eine bevorzugte Ausführung der Erfindung sieht vor, dass die Sollwertkurve in einem ersten Abschnitt bei Steigerung der Leistung um einen festen Wert in einem unteren Leistungsbereich eine größere Steigerung der sich einrichtenden Drehzahl vorsieht als in einem zweiten Abschnitt, wo bei Steigerung der Leistung um den festen Wert in einem oberen Leistungsbereich eine geringere Steigerung der sich einrichtenden Drehzahl als im ersten Abschnitt vorgesehen ist. Bei einem solchen Verlauf der Sollwertkurve kann beispielsweise eine als Glattbodendüse ausgebildete adaptierbare Saugdüse im ersten Abschnitt betrieben werden, wobei die Veränderung der elektrischen Leistung hier größere Drehzahlveränderungen bei Einhaltung des Unterdrucksollwertes vorsieht, als dies im zweiten Abschnitt der Fall ist. Im zweiten Abschnitt könnte beispielsweise, eine weitere, als Universaldüse ausgebildete Saugdüse betrieben werden, sodass bei Veränderungen der elektrischen Leistung geringere Drehzahlveränderungen bei Einhaltung des Unterdrucksollwertes erwartet werden.A preferred embodiment of the invention provides that the setpoint curve provides a greater increase in the established speed in a first section when the power is increased by a fixed value in a lower power range than in a second section, where when the power is increased by the fixed value In an upper power range, a smaller increase in the established speed is provided than in the first section. With such a course of the setpoint curve, for example, an adaptable suction nozzle designed as a smooth floor nozzle can be operated in the first section, the change in the electrical power here providing greater speed changes while maintaining the vacuum setpoint than is the case in the second section. In the second section, for example, a further suction nozzle designed as a universal nozzle could be operated, so that when the electrical power changes, lower speed changes are expected while maintaining the negative pressure setpoint.
Besonders vorteilhaft ist auch die Ausführung der Erfindung, dass der Staubsauger eine als Glattbodendüse ausgebildete adaptierbare Saugdüse und mindestens eine weitere, adaptierbare Saugdüse aufweist, wobei die Glattbodendüse gegenüber der weiteren Saugdüse einen reduzierten Blendendurchmesser aufweist. Über den reduzierten Blendendurchmesser ist der begrenzende Querschnitt für den vom Gebläse erzeugten Luftstrom reduziert in einer Art und Weise, dass die sich einrichtenden Drehzahlen bei Änderung der elektrischen Leistung über den Frequenzumrichter einer Glattbodendüse zuordnen lassen. Dabei wird die Sollwertkurve für die Unterdruckregelung derart parametriert, dass bei einer verwendeten Glattbodendüse sich die erforderlichen elektrischen Leistungen einstellen. Über den durch den reduzierten Blendendurchmesser erreichbaren charakteristischen Zusammenhang zwischen vorgegebener Leistung und sich einstellender Drehzahl des Gebläses kann sehr schnell über den Frequenzumrichter ermittelt werden, dass die Glattbodendüse an den Staubsauger adaptiert ist. Mit Erkennung der angeschlossenen Glattbodendüse kann nun die Einstellung des Gebläses über die Vorgabe der Leistung so begrenzt werden, dass die Kriterien für eine gute Klassifizierung des Staubsaugers bei den Energieklassen problemlos eingehalten werden können, wobei das Gebläse weiterhin auf die adaptierte Saugdüse hin optimiert zur Erzielung guter Reinigungsergebnisse und einer zufriedenstellenden Handhabung betrieben werden kann. So lässt sich über den in der Sollwertkurve vorgegeben Unterdruck ein Luftstrom erzeugen, der bei unterschiedlichen an den Staubsauger angeschlossenen Saugdüsen eine optimierte Aufnahme von Schmutz bei gleichzeitiger Einhaltung der über das Energy-Label geschaffenen Erfordernisse zur Einhaltung eines definierten Energieverbrauchs bietet.The embodiment of the invention is also particularly advantageous that the vacuum cleaner has an adaptable suction nozzle designed as a smooth floor nozzle and at least one further, adaptable suction nozzle, the smooth floor nozzle having a reduced aperture diameter compared to the further suction nozzle. The limiting cross-section for the air flow generated by the fan is reduced via the reduced diaphragm diameter in such a way that the speeds that are established can be assigned to a smooth-floor nozzle when the electrical power changes via the frequency converter. The setpoint curve for the vacuum control is parameterized in such a way that the required electrical power is set when a smooth floor nozzle is used. Via the characteristic relationship between the specified power and the speed of the fan that is achieved through the reduced diaphragm diameter, it can be determined very quickly via the frequency converter that the smooth floor nozzle is adapted to the vacuum cleaner. With the detection of the connected smooth floor nozzle, the setting of the blower can now be limited via the specification of the power so that the criteria for a good classification of the vacuum cleaner with the Energy classes can be adhered to without any problems, with the fan still being able to be operated optimized for the adapted suction nozzle to achieve good cleaning results and satisfactory handling. For example, the negative pressure specified in the setpoint curve can be used to generate an air flow which, with different suction nozzles connected to the vacuum cleaner, offers optimized dirt pick-up while at the same time adhering to the requirements created by the energy label to maintain a defined energy consumption.
Ferner ist Gegenstand der Erfindung ein Verfahren zur Einstellung einer Gebläseleistung eines bereits und im Folgenden näher beschriebenen Staubsaugers zur Reinigung und Pflege von Bodenflächen, wobei ein Frequenzumrichter zur Einstellung der Leistung des Gebläses vorgesehen ist, wobei zur Einstellung der Leistung des Gebläses ein vom Gebläse erzeugter Unterdruck als modelspezifische Sollwertkurve in Abhängigkeit von elektrischer Leistung und Drehzahl des Gebläses vorgegeben wird und der Frequenzumrichter auf Basis von hierzu hinterlegter Leistung und Drehzahl anhand der Sollwertkurve einen vorgegeben Sollwert für den Unterdruck über die Vorgabe von Leistung und Überprüfung der sich einrichtenden Drehzahl einstellt. Ein mit diesem Verfahren betriebener Staubsauger kann hinsichtlich des Energieverbrauchs bei Verwendung unterschiedlicher Saugdüsen dahingehend optimiert werden, dass die Kriterien des Energy-Labels für eine gute Klassifizierung des Staubsaugers hinsichtlich des Energieverbrauchs eingehalten werden und der Staubsauger außerdem eine zufriedenstellende Reinigung und Pflege von Bodenflächen gewährleistet. Die Einstellung der Gebläseleistung auf einen zur Reinigung der Bodenflächen erforderlichen Unterdruck kann über die modelspezifische Sollwertkurve in Abhängigkeit von der vom Frequenzumrichter zur Verfügung gestellten Leistung und der sich einrichtenden Drehzahl erreicht werden. Hierdurch sind einfach Rückschlüsse auf die verwendete Saugdüse und den sich einstellenden Unterdruck zu ziehen. Die Unterdruckregelung und auch die Saugdüsenerkennung sind so einfach realisierbar, da diese Lösung keinen Unterdruckschalter benötigt. Die maßgeblichen Größen zur Einstellung eines Unterdrucksollwertes sind durch die zur Verfügung gestellte Leistung und die sich einrichtende Drehzahl des Gebläses dem Frequenzumrichter bekannt. Die Größen können dabei direkt gemessen werden beispielweise über einen Sensor zur Drehzahlerfassung des Gebläses. Alternativ lassen sich die Größen auch indirekt ermitteln, beispielweise anhand eines Algorithmus, welcher den Verlauf der Motorströme oder Spannungen auswertet.The invention also relates to a method for setting the fan power of a vacuum cleaner, which has already been described in more detail below, for cleaning and caring for floor surfaces, a frequency converter being provided for setting the power of the fan, with a vacuum generated by the fan to set the power of the fan is specified as a model-specific setpoint curve depending on the electrical power and speed of the fan and the frequency converter uses the setpoint curve to set a specified setpoint for the negative pressure by specifying the power and checking the speed that is established based on the power and speed stored for this purpose. A vacuum cleaner operated with this method can be optimized with regard to energy consumption when using different suction nozzles in such a way that the criteria of the energy label for a good classification of the vacuum cleaner with regard to energy consumption are complied with and the vacuum cleaner also ensures satisfactory cleaning and care of floor surfaces. The setting of the blower output to a negative pressure required for cleaning the floor surfaces can be achieved via the model-specific setpoint curve depending on the output made available by the frequency converter and the speed that is established. This makes it easy to draw conclusions about the suction nozzle used and the negative pressure that is established. The vacuum control and the suction nozzle detection are easy to implement because this solution does not require a vacuum switch. The relevant variables for setting a negative pressure setpoint are known to the frequency converter from the power provided and the speed of the fan that is established. The variables can be measured directly, for example using a sensor for detecting the speed of the fan. Alternatively, the variables can also be determined indirectly, for example using an algorithm that evaluates the course of the motor currents or voltages.
Die Einstellung der Gebläseleistung über die modellspezifische Sollwertkurve ermöglicht die Einstellung eines definierten Unterdrucks. Hierzu muss die modellspezifische Sollwertkurve bei der Entwicklung und Konstruktion des Staubsaugers einmal im Labor ermittelt werden. Die Sollwertkurve für den Unterdruck kann bevorzugt als Algorithmus oder als Tabelle beispielsweise in der Software des Frequenzumrichters hinterlegt sein. Die modellspezifische Sollwertkurve beinhaltet die erforderliche elektrische Leistung, die der Umrichter dem Gebläse zur Verfügung stellt, und die sich bei vorgegebenen Unterdruck einrichtende Drehzahl des Gebläses. Mit dem Frequenzumrichter kann das Gebläse sehr einfach über die Hinterlegung der Leistung und der Drehzahl zur Erzeugung eines definierten Unterdruckes eingestellt werden, da die Einstellgrößen dem Frequenzumrichter zur Verfügung stehen. Die korrekten Einstellgrößen sollten bei der Entwicklung und Konstruktion des Staubsaugers im Labor ermittelt werden. Die so ermittelte modellspezifische Sollwertkurve kann für alle baugleichen Staubsaugermodelle verwendet werden, muss aber bei Abweichungen der Baureihen, die Einfluss auf den vom Gebläse erzeugten Unterdruck haben, wiederholt werden.The setting of the blower output via the model-specific setpoint curve enables a defined negative pressure to be set. For this purpose, the model-specific target value curve must be determined once in the laboratory during the development and construction of the vacuum cleaner. The setpoint curve for the negative pressure can preferably be stored as an algorithm or as a table, for example in the software of the frequency converter. The model-specific The setpoint curve contains the required electrical power that the converter makes available to the fan and the fan speed that is established at a given negative pressure. With the frequency converter, the fan can be set very easily by storing the power and the speed to generate a defined negative pressure, since the setting variables are available to the frequency converter. The correct setting values should be determined during the development and construction of the vacuum cleaner in the laboratory. The model-specific setpoint curve determined in this way can be used for all identical vacuum cleaner models, but must be repeated in the event of deviations in the series that affect the negative pressure generated by the blower.
Weiter vorteilhaft ist die Ausgestaltung des Verfahrens, dass eine mit dem Staubsauger adaptierbare Saugdüse bei Adaptierung mit dem Staubsauger anhand der vom Frequenzumrichter vorgegebenen Leistung und der sich einrichtenden Drehzahl erkannt wird. Anhand eines charakteristischen Zusammenhangs zwischen vorgegebener Leistung und sich einstellender Drehzahl des Gebläses kann sehr schnell über den Frequenzumrichter ermittelt werden, welche der mit dem Staubsauger adaptierbaren Saugdüsen mit dem Staubsauger verbunden ist. Über die Erkennung der angeschlossenen Saugdüse kann dann die vorgegebene Leistung bei der Einstellung des Gebläses so begrenzt werden, dass die Energieverbräuche für eine gute Klassifizierung des Staubsaugers beim Energy-Label einfach eingehalten werden, wobei dennoch ein gutes Reinigungsergebnis und eine zufriedenstellende Handhabung der Saugdüse erreicht werden. Über den in der Sollwertkurve vorgegeben Unterdruck kann ein Luftstrom erzeugt werden, der auch bei unterschiedlichen an den Staubsauger angeschlossenen Saugdüsen eine optimierte Aufnahme von Schmutz sicherstellt, wobei zugleich die definierte Einhaltung der über das Energy-Label geschaffenen Erfordernisse hinsichtlich des Stromverbrauchs erreicht wird.The embodiment of the method is further advantageous in that a suction nozzle that can be adapted with the vacuum cleaner is recognized when it is adapted with the vacuum cleaner on the basis of the power specified by the frequency converter and the rotational speed that is established. On the basis of a characteristic relationship between the specified power and the set speed of the blower, it can be determined very quickly via the frequency converter which of the suction nozzles that can be adapted to the vacuum cleaner is connected to the vacuum cleaner. By recognizing the connected suction nozzle, the specified power can then be limited when setting the blower so that the energy consumption for a good classification of the vacuum cleaner with the energy label is easily adhered to, while still achieving a good cleaning result and satisfactory handling of the suction nozzle . An air flow can be generated via the negative pressure specified in the setpoint curve, which ensures an optimized absorption of dirt even with different suction nozzles connected to the vacuum cleaner, while at the same time the defined compliance with the energy consumption requirements created by the energy label is achieved.
Eine vorteilhafte Ausführungsform des Verfahrens sieht vor, dass die Leistung bei einer als Glattbodendüse ausgebildeten, adaptierbaren Saugdüse reduziert wird. Mit der Reduzierung der Leistung des Gebläses bei der Verwendung der Glattbodendüse, kann ein zufriedenstellendes Reinigungsergebnis auf Glattböden bei einem geringen Stromverbrauch sichergestellt werden.An advantageous embodiment of the method provides that the power is reduced in the case of an adaptable suction nozzle designed as a smooth floor nozzle. By reducing the fan power when using the smooth floor nozzle, a satisfactory cleaning result can be ensured on smooth floors with a low power consumption.
Gemäß einer vorteilhaften Ausgestaltung des Verfahrens ist vorgesehen, dass die Leistung wieder erhöht wird, wenn die Bedingungen für die vorgegebene Leistung und die sich einrichtende Drehzahl für die als Glattbodendüse ausgebildete, adaptierbare Saugdüse nicht mehr erfüllt werden. Mit der Erhöhung der Leistung bei Verwendung einer anderen als der Glattbodendüse kann ein Luftstrom erzeugt werden, bei dem zufriedenstellende Reinigungsergebnisse erzielbar sind.According to an advantageous embodiment of the method, it is provided that the power is increased again when the conditions for the specified power and the established speed for the adaptable suction nozzle designed as a smooth floor nozzle are no longer met. With the increase in output when using a nozzle other than the smooth floor nozzle, an air flow can be generated with which satisfactory cleaning results can be achieved.
Eine bevorzugte Ausführung des Verfahrens sieht vor, dass die Leistung kontinuierlich verändert wird. Mit der kontinuierlichen Veränderung der Leistung können starke Unterdruck- und Drehzahlschwankungen vermieden werden, die das Benutzerempfinden beeinträchtigen. Die kontinuierliche Veränderung sorgt im Gegensatz zu der stufenweisen Verstellung der Leistung für weniger wahrnehmbare Eingriffe in die Steuerung des Gebläses.A preferred embodiment of the method provides that the power is changed continuously. With the continuous change in performance, strong fluctuations in vacuum and speed, which impair the user experience, can be avoided. In contrast to the gradual adjustment of the output, the continuous change ensures less perceptible interventions in the control of the blower.
Weitere Merkmale, Einzelheiten und Vorteile der Erfindung ergeben sich aufgrund der nachfolgenden Beschreibung sowie anhand der Zeichnungen. Ausführungsbeispiele der Erfindung sind in den folgenden Zeichnungen rein schematisch dargestellt und werden nachfolgend näher beschrieben. Einander entsprechende Gegenstände oder Elemente sind in allen Figuren mit den gleichen Bezugszeichen versehen. Es zeigt
Figur 1- Erfindungsgemäßer Staubsauger mit Bodendüse,
Figur 2- Drehzahl-/Leistungskurven für unterschiedliche Unterdrücke,
Figur 3- Drehzahl-/Leistungskurve mit nichtlinearer Abbildung, und
Figur 4- Beispiel für eine Leistungsregelung.
- Figure 1
- Vacuum cleaner according to the invention with floor nozzle,
- Figure 2
- Speed / power curves for different negative pressures,
- Figure 3
- Speed / power curve with non-linear mapping, and
- Figure 4
- Example of a power control.
In der
Erfindungsgemäß vorgesehen ist, dass zur Einstellung der Leistung p des Gebläses ein vom Gebläse erzeugter Unterdruck P1, P2, P3 als modelspezifische Sollwertkurve K1, K2, K3 in Abhängigkeit von elektrischer Leistung p und Drehzahl n vorgegeben ist. Solche Sollwertkurven sind in
Während Sollwertkurve K1 den Verlauf bei einem Unterdruck P1 von beispielsweise 70 mBar anzeigt, gibt die Sollwertkurve K2 den Verlauf bei einem Unterdruck P2 von beispielsweise 80 mBar an. Die Sollwertkurve K3 kann in diesem Beispiel den Verlauf bei einem Unterdruck P3 von 90 mBar markieren. Die gezeigten Sollwertkurven K1, K2 und K3 weisen in Abhängigkeit von Leistung p und Drehzahl n einen linearen Verlauf auf. Die Unterdruckkurven, die als Sollwert dienen, können auch andere Kurvenverläufe aufweisen.While the setpoint curve K1 shows the course at a negative pressure P1 of, for example, 70 mbar, the setpoint curve K2 shows the course at a negative pressure P2 of, for example, 80 mBar. In this example, the setpoint curve K3 can mark the course at a negative pressure P3 of 90 mbar. The setpoint curves K1, K2 and K3 shown have a linear profile as a function of power p and speed n. The negative pressure curves, which serve as the nominal value, can also have other curve courses.
Die Sollwertkurve kann auch derart angepasst werden, dass sie, wie in
In einem ersten Abschnitt A1 des unteren Leistungsbereichs wird bei Steigerung der Leistung p um eine größere Steigerung der sich einrichtenden Drehzahl n vorgesehen, als in einem zweiten Abschnitt A2 in einem oberen Leistungsbereich, wo bei Steigerung der Leistung p eine geringere Steigerung der sich einrichtenden Drehzahl n als im ersten Abschnitt A1 vorgesehen ist. Der hier in
Um beim Ansetzen und Abheben der Glattbodendüse 5 (
In
Die vorgeschlagene Lösung bietet Vorteile gegenüber dem Stand der Technik, da die Leistung p nur im Zusammenhang mit dem Nutzerverhalten, beispielsweise durch Tastendruck an einer Benutzerschnittstelle 3, 4 (
Natürlich ist die Erfindung nicht auf das dargestellte Ausführungsbeispiel beschränkt. Weitere Ausgestaltungen sind möglich, ohne den Grundgedanken zu verlassen. So kann die Bodendüse auch als Teil eines selbstfahrenden Staubsaugers ausgebildet sein.Of course, the invention is not limited to the illustrated embodiment. Further refinements are possible without departing from the basic idea. The floor nozzle can also be designed as part of a self-propelled vacuum cleaner.
- 11
- Staubsaugervacuum cleaner
- 22
- AbscheidesystemSeparation system
- 33
- Handschaltung (Benutzerschnittstelle)Manual switching (user interface)
- 44th
- Trittschaltung (Benutzerschnittstelle)Step switch (user interface)
- 55
- GlattbodendüseSmooth floor nozzle
- 66th
- AnschlussstutzenConnection piece
- 77th
- SaugrohrSuction pipe
- 88th
- 8a Staubsaugergehäuse8a vacuum cleaner housing
- 99
- Gehäuse (Bodendüse)Housing (floor nozzle)
- 1010
- HandgriffHandle
- 1111
- SaugschlauchSuction hose
- 1212th
- AnschlusskabelConnection cable
- 1313th
- StaubraumDust room
- 1414th
- AbluftgitterExhaust grille
- 1515th
- BearbeitungsrichtungMachining direction
- 1616
- AbstützelementeSupport elements
- 1717th
- Weitere SaugdüseAnother suction nozzle
- 3030th
- BodenflächeFloor area
- PP
- Leistung des GebläsesPower of the blower
- nn
- Drehzahl des GebläsesFan speed
- P1P1
- Erster UnterdruckFirst negative pressure
- P2P2
- Zweiter UnterdruckSecond negative pressure
- P3P3
- Dritter UnterdruckThird negative pressure
- P4P4
- Vierter UnterdruckFourth vacuum
- K1K1
- Erste SollwertkurveFirst setpoint curve
- K2K2
- Zweite SollwertkurveSecond setpoint curve
- K3K3
- Dritte SollwertkurveThird setpoint curve
- K4K4
- Vierte SollwertkurveFourth setpoint curve
- A1A1
- Erster Abschnittfirst section
- A2A2
- Zweiter Abschnittsecond part
Claims (10)
dadurch gekennzeichnet,
dass zur Einstellung der elektrischen Leistung (p) des Gebläses ein vom Gebläse erzeugter Unterdruck (P1, P2, P3, P4) als modelspezifische Sollwertkurve (K1, K2, K3, K4) in Abhängigkeit von elektrischer Leistung (p) und Drehzahl (n) vorgegeben ist und der Frequenzumrichter auf Basis von hierzu hinterlegter elektrischer Leistung (p) und Drehzahl (n) anhand der Sollwertkurve (K1, K2, K3, K4) einen vorgegeben Sollwert für den Unterdruck (P1, P2, P3, P4) über die Vorgabe von Leistung (p) und Überprüfung der sich einrichtenden Drehzahl (n) einstellt.Vacuum cleaner (1) for cleaning and caring for floor surfaces (30) with a fan to generate a negative pressure to pick up dirt by means of an air stream, a separation system (2) to clean the air from dirt and a frequency converter to adjust the power (p) of the blower,
characterized,
that to set the electrical power (p) of the fan, a negative pressure generated by the fan (P1, P2, P3, P4) as a model-specific setpoint curve (K1, K2, K3, K4) as a function of electrical power (p) and speed (n) is specified and the frequency converter based on the stored electrical power (p) and speed (n) using the setpoint curve (K1, K2, K3, K4) a specified setpoint for the negative pressure (P1, P2, P3, P4) via the specification of power (p) and checking of the established speed (n).
dadurch gekennzeichnet,
dass zur Einstellung der elektrischen Leistung (p) des Gebläses ein vom Gebläse erzeugter Unterdruck (P1, P2, P3, P4) als modelspezifische Sollwertkurve (K1, K2, K3, K4) in Abhängigkeit von elektrischer Leistung (p) und Drehzahl (n) vorgegeben wird und der Frequenzumrichter auf Basis von hierzu hinterlegter elektrischer Leistung (p) und Drehzahl (n) anhand der Sollwertkurve (K1, K2, K3, K4) einen vorgegeben Sollwert für den Unterdruck (P1, P2, P3, P4) über die Vorgabe von elektrischer Leistung (p) und Überprüfung der sich einrichtenden Drehzahl (n) einstellt.Method for setting the fan power of a vacuum cleaner (1) for cleaning and caring for floor surfaces (30), a frequency converter being provided for setting the electrical power (p) of the fan,
characterized,
that to set the electrical power (p) of the fan, a negative pressure generated by the fan (P1, P2, P3, P4) as a model-specific setpoint curve (K1, K2, K3, K4) as a function of electrical power (p) and speed (n) is specified and the frequency converter based on the stored electrical power (p) and speed (n) using the setpoint curve (K1, K2, K3, K4) a specified setpoint for the negative pressure (P1, P2, P3, P4) via the specification of electrical power (p) and checking of the established speed (n).
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DE102019130910.7A DE102019130910A1 (en) | 2019-11-15 | 2019-11-15 | Vacuum cleaner and method of operating a vacuum cleaner |
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CN115026629A (en) * | 2022-08-15 | 2022-09-09 | 南通佰瑞利电动工具有限公司 | Dust collection power control method for dust collection electric drill |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3718263A1 (en) * | 1987-05-30 | 1988-12-15 | Zubler Geraetebau | Method for overcoming load changes and irregularities in suction appliances such as vacuum cleaners with a driving-motor speed which can be varied by means of frequency conversion |
DE3932802A1 (en) * | 1989-09-30 | 1991-04-11 | Wap Reinigungssysteme | Brushless high speed DC vacuum cleaner motor - has electronic commutation for hazardous applications using Hall-effect sensors in permanent magnet rotor with in-built stator current limit |
EP0479609A2 (en) * | 1990-10-05 | 1992-04-08 | Hitachi, Ltd. | Vacuum cleaner and control method thereof |
EP3351160A1 (en) | 2016-12-14 | 2018-07-25 | Miele & Cie. KG | Method and device for operating a vacuum cleaner |
-
2019
- 2019-11-15 DE DE102019130910.7A patent/DE102019130910A1/en active Pending
-
2020
- 2020-10-22 EP EP20203197.7A patent/EP3821778B1/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3718263A1 (en) * | 1987-05-30 | 1988-12-15 | Zubler Geraetebau | Method for overcoming load changes and irregularities in suction appliances such as vacuum cleaners with a driving-motor speed which can be varied by means of frequency conversion |
DE3932802A1 (en) * | 1989-09-30 | 1991-04-11 | Wap Reinigungssysteme | Brushless high speed DC vacuum cleaner motor - has electronic commutation for hazardous applications using Hall-effect sensors in permanent magnet rotor with in-built stator current limit |
EP0479609A2 (en) * | 1990-10-05 | 1992-04-08 | Hitachi, Ltd. | Vacuum cleaner and control method thereof |
EP3351160A1 (en) | 2016-12-14 | 2018-07-25 | Miele & Cie. KG | Method and device for operating a vacuum cleaner |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN115026629A (en) * | 2022-08-15 | 2022-09-09 | 南通佰瑞利电动工具有限公司 | Dust collection power control method for dust collection electric drill |
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DE102019130910A1 (en) | 2021-05-20 |
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