DE3718263A1 - 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 - Google Patents
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 conversionInfo
- Publication number
- DE3718263A1 DE3718263A1 DE19873718263 DE3718263A DE3718263A1 DE 3718263 A1 DE3718263 A1 DE 3718263A1 DE 19873718263 DE19873718263 DE 19873718263 DE 3718263 A DE3718263 A DE 3718263A DE 3718263 A1 DE3718263 A1 DE 3718263A1
- Authority
- DE
- Germany
- Prior art keywords
- speed
- suction device
- drive motor
- load changes
- suction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
- Electric Vacuum Cleaner (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Überwindung von Belastungsänderung en und -unregelmäßigkeiten an Sauggeräten, insbesondere an frequenzumgerich teten Staubsaugern nach den oberbegrifflichen Merkmalen des Anspruchs 1.The invention relates to a method for overcoming load changes s and irregularities on suction devices, especially on frequency converters Teten vacuum cleaners according to the preamble features of claim 1.
Bisher werden Staubsauger mit relativ hohen Drehzahlen betrieben, um bei Be lastungsspitzen durch große Staubhaufen oder feuchten Staub eine ausreichen de Saugleistung ohne Verstopfung des Ansaugrohres zu erreichen. Im überwie genden Teil der Betriebszeit sind jedoch die Saugleistungen für geringen und durchschnittlichen Staubanfall überhöht. Durch diese Überdimensionierung er geben sich durch das hohe Drehzahlniveau übermäßige Lärmbelastungen und un nötiger Energieverbrauch.So far, vacuum cleaners have been operated at relatively high speeds, at Be Peak loads caused by large dust piles or damp dust are sufficient de To achieve suction power without clogging the intake pipe. In the above However, the suction power for low and average dust accumulation. By overdimensioning it give themselves excessive noise pollution and un due to the high speed level necessary energy consumption.
Auf der anderen Seite kann das Drehzahlniveau bei zweistufigen Sauggeräten durch eine Art Energiespartaste auf eine niedrigere Stufe abgesenkt werden oder auf niedrigere Saugleistung ausgelegt sein. Bei Belastungsspitzen wie z. B. durch ein angesaugtes Blatt oder Lappen treten dabei jedoch sehr häu fig Ansaugrohrverstopfungen auf, da die Ansaugleistung durch die niedrige Drehzahl zu gering ist.On the other hand, the speed level with two-stage suction devices can be lowered to a lower level using a kind of energy saving button or be designed for lower suction power. At peak loads such as e.g. B. by a suctioned sheet or rag occur very often fig Intake pipe blockages, because the suction power due to the low Speed is too low.
Insbesondere bei frequenzumgerichteten Motoren, besteht das Problem, daß selbst bei Ansaugrohrverstopfungen durch die vorgegebene Frequenz die Antriebs drehzahl konstant bleibt und damit Rohrverstopfungen und größere Belastungs änderungen nicht beseitigt werden können.Especially with frequency-converted motors, there is the problem that even if the intake frequency is blocked by the specified frequency, the drive speed remains constant and thus pipe blockages and higher loads changes cannot be eliminated.
Demzufolge liegt der Erfindung die Aufgabe zugrunde, ein Verfahren für frequenzumgerichtete Sauggeräte anzugeben, das bei niedriger Lärmentwicklung und geringem Energieverbrauch Ansaugrohrverstopfungen ausschließt und Bela stungsänderungen überwinden hilft. Diese Aufgabe wird gelöst durch die kenn zeichnenden Merkmale des Verfahrensanspruchs 1 und der Vorrichtungsansprüche.The invention is therefore based on the object of specifying a method for frequency-converted suction devices which, with low noise development and low energy consumption, excludes intake pipe blockages and helps to overcome load changes. This object is achieved by the characterizing features of method claim 1 and the device claims.
Durch die Drehzahlerhöhung um einen bestimmten Betrag in unmittelbarer Folge auf die Erfassung der Belastungsunregelmäßigkeit wird die Ansaugleistung stark erhöht, und somit die bereits entstandene oder sich anbahnende Ansaug rohrverstopfundg überwunden, indem z. B. ein sich verklemmtes Laubblatt durch die höhere Luftgeschwindigkeit losgerissen und in den Staubbehälter beför dert wird. Durch diese sehr schnelle Reaktion auf drohende Verstopfundgsur sache kann der Staubsauger über den Großteil der Betriebszeit mit niedrige ren Drehzahlen betrieben werden und erst in den einzelnen, meist kurzzeitigen Spitzenbelastungen wird die Ansaugleistung bedarfsgerecht erhöht. Außerdem läßt sich hiermit der Füllgrad der Staubfilter besser nutzen, wenn gegen En de der Filterstandzeit die Ansaugleistung durch eine gesteigerte Drehzahl erhöht wird. Dieser Zustand kann dabei durch die gleichen Mittel wie für die Erfassung von Belastungsänderungen ermittelt werden.By increasing the speed by a certain amount in immediate succession the intake power is based on the detection of the load irregularity greatly increased, and thus the suction that has already arisen or is emerging Rohrststopfundg overcome by z. B. through a jammed leaf the higher air speed torn off and put into the dust container is changed. Through this very quick reaction to impending constipation thing the vacuum cleaner can do over most of the operating time with low Ren speeds are operated and only in the individual, mostly short-term Peak loads increase the suction power as required. Furthermore the degree of filling of the dust filter can be used better if against En de the filter life the suction power by an increased speed is increased. This condition can be done by the same means as for the Acquisition of load changes can be determined.
Weitere vorteilhafte Ausgestaltungen sind Gegenstand der Unteransprüche. Hierbei ergeben sich mehrere Arten der Erfassung der Belastungsänderung bzw. der Lastspitzen.Further advantageous embodiments are the subject of the dependent claims. This results in several types of recording the change in load or the peak loads.
Nachfolgend wird das Verfahren und die Sauggerätvorrichtung zur Durchführung des Verfahrens beschrieben, und zwar an der Ausführungsform gemäß Anspruch 4 und 5. The method and the suction device device for carrying out are described below of the method described, namely on the embodiment according to claim 4 and 5.
Bei einem Staubsauger treibt der Antriebsmotor ein Gebläserad zur Erzeugung eines Ansaugluftstromes an. Der drehzahlveränderbare Antriebsmotor ist bei spielsweise als Drehfeldmotor, insbesondere als Asynchrondrehstrommotor aus gebildet, der über einen Frequenzumrichter in seiner Drehzahl gesteuert wird. Beim Auftreten einer Lastspitze oder gar einer Ansaugrohrverstopfung ändert sich z. B. die Stromaufnahme des Antriebsmotors. Aus der Messung der Strom aufnahme bzw. dessen Änderungen läßt sich z. B. über ein Differentierglied oder über ein Relais ein Signal ableiten, das den Befehl zur Drehzahlerhöhung unmittelbar an den Frequenzumrichter meldet. Somit kann innerhalb kürzester Zeit die Belastungsspitze ohne Verstopfung überwunden werden.In the case of a vacuum cleaner, the drive motor drives an impeller for generation of an intake air flow. The variable-speed drive motor is at for example as a three-phase motor, in particular as an asynchronous three-phase motor formed, whose speed is controlled by a frequency converter. If a load peak or even an intake manifold blockage changes z. B. the current consumption of the drive motor. From measuring the current recording or its changes can, for. B. via a differentiator or via a relay derive a signal that commands the speed increase reports directly to the frequency converter. Thus, within the shortest Time to overcome the peak load without constipation.
Andere Möglichkeiten der schnellen Erfassung der Belastungsunregelmäßigkeiten sind z. B. die Messung des Spannungsabfalls am Leistungsteil des Frequenzum richters oder die Spannungs- und/oder Strommessung am Gleichstrom-Zwischen kreis des Frequenzumrichters oder eine Schlupfmessung mittels Drehzahlsensor für die tatsächliche Motordrehzahl, wobei ab einer bestimmbaren Abweichung vom Soll-Drehzahlwert die Drehzahl schlagartig erhöht wird oder eine Durch flußmessung mittels eines Strömungssensor im Luftweg der Ansaug/Abströmluft.Other ways of quickly recording the load irregularities are z. B. the measurement of the voltage drop at the power section of the frequency richters or the voltage and / or current measurement at the DC intermediate circuit of the frequency converter or a slip measurement using a speed sensor for the actual engine speed, starting from a determinable deviation from the target speed value, the speed is suddenly increased or a through flow measurement by means of a flow sensor in the airway of the intake / exhaust air.
Die Drehzahlerhöhung erfolgt dabei in bevorzugter Ausführung schlagartig um einem bestimmten Drehzahlbetrag, damit auch bereits festsitzende Ansaugteil chen losgerissen werden können, wobei dieses auch in Abhängigkeit von dem Betrag der Lastspitze in mehreren Stufen oder in pulsierender Form wieder holt erfolgen kann.In a preferred embodiment, the speed increase occurs suddenly a certain speed, so that the intake part is already stuck Chen can be torn off, this also depending on the Amount of the peak load in several stages or in pulsating form can take place.
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19873718263 DE3718263A1 (en) | 1987-05-30 | 1987-05-30 | 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 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19873718263 DE3718263A1 (en) | 1987-05-30 | 1987-05-30 | 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 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3718263A1 true DE3718263A1 (en) | 1988-12-15 |
DE3718263C2 DE3718263C2 (en) | 1990-04-19 |
Family
ID=6328767
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19873718263 Granted DE3718263A1 (en) | 1987-05-30 | 1987-05-30 | 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 |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3718263A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0506187A1 (en) * | 1991-03-29 | 1992-09-30 | Koninklijke Philips Electronics N.V. | Apparatus at least comprising an electric motor with variable motor power |
WO2009041888A1 (en) * | 2007-09-28 | 2009-04-02 | Htc Sweden Ab | Method and device for creating a stream of air for removing residue particles formed in connection with cutting, grinding and/or polishing of a stone or stone-like material |
EP3821778A1 (en) * | 2019-11-15 | 2021-05-19 | Miele & Cie. KG | Vacuum cleaner and method for operating same |
DE102008018189B4 (en) | 2008-04-10 | 2021-10-28 | Vorwerk & Co. Interholding Gmbh | Electrically operated vacuum cleaner |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE573224C (en) * | 1931-06-29 | 1933-03-29 | Hoover Co | Vacuum cleaner with control switch for the fan motor |
DE3030059A1 (en) * | 1980-08-08 | 1982-02-18 | Progress-Elektrogeräte Mauz & Pfeiffer GmbH & Co, 7000 Stuttgart | VACUUM CLEANER WITH A CONSTANT AIRFLOW |
-
1987
- 1987-05-30 DE DE19873718263 patent/DE3718263A1/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE573224C (en) * | 1931-06-29 | 1933-03-29 | Hoover Co | Vacuum cleaner with control switch for the fan motor |
DE3030059A1 (en) * | 1980-08-08 | 1982-02-18 | Progress-Elektrogeräte Mauz & Pfeiffer GmbH & Co, 7000 Stuttgart | VACUUM CLEANER WITH A CONSTANT AIRFLOW |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0506187A1 (en) * | 1991-03-29 | 1992-09-30 | Koninklijke Philips Electronics N.V. | Apparatus at least comprising an electric motor with variable motor power |
WO2009041888A1 (en) * | 2007-09-28 | 2009-04-02 | Htc Sweden Ab | Method and device for creating a stream of air for removing residue particles formed in connection with cutting, grinding and/or polishing of a stone or stone-like material |
DE102008018189B4 (en) | 2008-04-10 | 2021-10-28 | Vorwerk & Co. Interholding Gmbh | Electrically operated vacuum cleaner |
EP3821778A1 (en) * | 2019-11-15 | 2021-05-19 | Miele & Cie. KG | Vacuum cleaner and method for operating same |
Also Published As
Publication number | Publication date |
---|---|
DE3718263C2 (en) | 1990-04-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |