DE4138440A1 - Laundry dryer - has drive motor and radial ventilator to reduce heating when drum is not full - Google Patents
Laundry dryer - has drive motor and radial ventilator to reduce heating when drum is not fullInfo
- Publication number
- DE4138440A1 DE4138440A1 DE4138440A DE4138440A DE4138440A1 DE 4138440 A1 DE4138440 A1 DE 4138440A1 DE 4138440 A DE4138440 A DE 4138440A DE 4138440 A DE4138440 A DE 4138440A DE 4138440 A1 DE4138440 A1 DE 4138440A1
- Authority
- DE
- Germany
- Prior art keywords
- drum
- duration
- drying
- rotation
- reduced
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/32—Control of operations performed in domestic laundry dryers
- D06F58/34—Control of operations performed in domestic laundry dryers characterised by the purpose or target of the control
- D06F58/48—Control of the energy consumption
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/02—Characteristics of laundry or load
- D06F2103/08—Humidity
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/28—Air properties
- D06F2103/36—Flow or velocity
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/16—Air properties
- D06F2105/24—Flow or velocity
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/28—Electric heating
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/32—Air flow control means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Abstract
Description
Die Erfindung betrifft einen Haushalt-Wäschetrockner nach dem Oberbegriff der Patentansprüche 1 bzw. 3.The invention relates to a household clothes dryer according to the Preamble of claims 1 and 3, respectively.
Bei einem solchen Wäschetrockner wird die in der Wäschetrommel befindliche Wäsche während des Trocknungsvorganges durch reversierende Betriebsart der Wäschetrommel bewegt und zugleich auch gelockert. Die zum Trocknen benötigte Luft wird von einem Radialventilator gefördert und durch Heizwiderstände erwärmt. Die Wäschetrommel und der Radialventilator werden von einem gemeinsamen Motor aus angetrieben. Bei dem hier zur Anwendung gelangenden Radialventilator ergibt sich bekanntlich in der Hauptdrehrichtung des Ventilatorrades eine größere Luftströmung als in der Gegendrehrichtung des Ventilatorrades. Die Folge daraus ist, daß die Trocknungsluft während der Gegendrehrichtung des Radialventilators bei gleicher Heizleistung auf eine höhere Temperatur aufgeheizt wird.In such a tumble dryer is in the laundry drum laundry during the drying process by reversing Operating mode of the laundry drum moves and at the same time loosened. The Air required for drying is fed by a centrifugal fan and heated by heating resistors. The laundry drum and the Centrifugal fans are driven by a common motor. At the radial fan used here results as is known, a larger one in the main direction of rotation of the fan wheel Airflow than in the opposite direction of rotation of the fan wheel. The consequence this means that the drying air during the counter-rotation of the Centrifugal fans with the same heating output to a higher temperature is heated.
Bei einem aus der EP 04 24 781 A2 bekannten Wäschetrockner bildet diese Erkenntnis die Grundlage für eine Verkürzung der Trocknungszeit, indem die Dauer des Betriebes des Radialventilators in der Gegendrehrichtung im Vergleich zur Dauer des Betriebes in der Hauptdrehrichtung vor allem in der Aufheizphase und in der Feuchtigkeitsaustriebsphase des Trocknungsvorganges entsprechend verlängert wird. Bei diesem bekannten Wäschetrockner wird jedoch nicht berücksichtigt, daß z. B. kleinere Füllmengen in der Regel einen höheren spezifischen Energieverbrauch (Kilowattstunde pro Kilogramm Wäsche) erfordern. Dies liegt u. a. daran, daß eine kleinere Füllmenge die Wäschetrommel nicht ausfüllt und deshalb erwärmte Trocknungsluft ungenützt über bzw. an der Wäsche vorbeistreicht, was dann entsprechende große Verluste zur Folge hat.In one known from EP 04 24 781 A2 This dryer forms the basis for a shortening the drying time by the duration of operation of the radial fan in the opposite direction of rotation compared to the duration of operation in the Main direction of rotation especially in the heating phase and in the Moisture expulsion phase of the drying process accordingly is extended. However, this known tumble dryer does not takes into account that z. B. Smaller quantities usually a higher specific energy consumption (kilowatt hour per kilogram of laundry) require. This is u. a. that a smaller amount of the Drum does not fill and therefore heated drying air passed unused over or past the laundry, which then corresponds big losses.
Demgegenüber liegt nun der Erfindung die Aufgabe zugrunde, den Primärenergieverbrauch für einen Trocknungsvorgang bei einem Wäschetrockner der in Rede stehenden Art weiter zu reduzieren.In contrast, the invention is based on the object Primary energy consumption for a drying process in one To further reduce the dryer of the type in question.
Die Lösung dieser Aufgabe besteht nun darin, daß bei Unter- bzw. Teilbeladung der Wäschetrommel der Trocknungsvorgang sowohl mit reduzierter Heizleistung als auch reduzierter Luftfördermenge durchgeführt wird, wobei während dieses Vorganges die Dauer der Gegendrehrichtung des Radialventilators im Vergleich zur Dauer der Hauptdrehrichtung ein Verhältnis von etwa 20 : 1 bis etwa 30 : 1 aufweist. Für die Anwahl des Trocknungsvorganges mit reduzierter Heizleistung und Luftfördermenge bei Unter- bzw. Teilbeladung der Wäschetrommel ist in der Bedienblende des Wäschetrockners ein manuell betätigbares Einstellorgan, z. B. eine entsprechend gekennzeichnete Drucktaste, integriert. Mit Betätigen dieser Einrichtung wird die Heizleistung reduziert und ein entsprechendes Reversier-Verhältnis für die Wäschetrommel gewählt bzw. eingestellt und damit zwangsläufig die Dauer der Drehrichtungen des Radialventilators festgelegt.The solution to this problem is now that Partial loading of the laundry drum with both the drying process reduced heating capacity and reduced air flow is carried out, during which the duration of the Direction of rotation of the radial fan compared to the duration of the Main direction of rotation a ratio of about 20: 1 to about 30: 1 having. For the selection of the drying process with reduced Heating capacity and air flow rate with partial or partial load of the The washing drum in the control panel of the dryer is a manual actuatable adjusting member, e.g. B. a correspondingly marked Push button, integrated. By operating this device the Heating power reduced and a corresponding reversing ratio for the laundry drum selected or set and thus inevitably the Duration of the direction of rotation of the radial fan is set.
Eine Reduzierung des Primärenergieverbrauchs kann auch erreicht werden, wenn bei einem Wäschetrockner mit einem aus mehreren Trocknungsphasen bestehenden Programmablauf die Trocknungsphase "Nachtrocknen" sowohl mit reduzierter Heizleistung als auch reduzierter Luftfördermenge durchgeführt wird, wobei während dieser Phase die Dauer der Gegendrehrichtung des Radialventilators im Vergleich zur Dauer der Hauptdrehrichtung ein Verhältnis von etwa 20 : 1 bis etwa 30 : 1 aufweist. Auf die Trocknungsphase mit reduzierter Heizleistung und Luftfördermenge könnte bei Erreichen einer Restfeuchte von etwa 10% automatisch umgeschaltet werden.A reduction in primary energy consumption can also be achieved if in a tumble dryer with one of several drying phases existing program sequence the drying phase "post-drying" with both reduced heating capacity and reduced air flow is carried out, the duration of the Direction of rotation of the radial fan compared to the duration of the Main direction of rotation a ratio of about 20: 1 to about 30: 1 having. On the drying phase with reduced heating output and Air flow rate could reach about 10% when residual moisture is reached can be switched automatically.
Die vorbeschriebene Betriebsweise ist vor allem für Wäschetrockner mit einem Radialventilator geeignet, der zugleich mit der Wäschetrommel von einem Antriebsmotor reversierend angetrieben wird.The above-described mode of operation is especially for tumble dryers a centrifugal fan that works with the laundry drum from a drive motor is reversibly driven.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4138440A DE4138440A1 (en) | 1991-11-22 | 1991-11-22 | Laundry dryer - has drive motor and radial ventilator to reduce heating when drum is not full |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4138440A DE4138440A1 (en) | 1991-11-22 | 1991-11-22 | Laundry dryer - has drive motor and radial ventilator to reduce heating when drum is not full |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4138440A1 true DE4138440A1 (en) | 1993-05-27 |
Family
ID=6445360
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4138440A Withdrawn DE4138440A1 (en) | 1991-11-22 | 1991-11-22 | Laundry dryer - has drive motor and radial ventilator to reduce heating when drum is not full |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE4138440A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1433894A1 (en) * | 2002-12-24 | 2004-06-30 | Lg Electronics Inc. | Automatic dryer control based on load information |
WO2013167488A3 (en) * | 2012-05-09 | 2014-05-08 | BSH Bosch und Siemens Hausgeräte GmbH | Method for operating a dryer at variable speed of a drive motor and dryer suitable therefor |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1485040A1 (en) * | 1963-09-05 | 1969-10-09 | Miele & Cie | Method for heating a tumble dryer |
DE1585995A1 (en) * | 1964-12-04 | 1969-10-16 | Siemens Elektrogeraete Gmbh | Tumble dryer working according to the drum principle |
US3514867A (en) * | 1968-06-21 | 1970-06-02 | Blackstone Corp | Clothes dryers with reversing drum |
DE3820815A1 (en) * | 1988-06-20 | 1989-12-21 | Bosch Siemens Hausgeraete | METHOD FOR DRYING LAUNDRY PIECES IN A DRUM DRYER AND DRUM DRYER SUITABLE FOR THIS |
DE3824799A1 (en) * | 1988-07-21 | 1990-01-25 | Licentia Gmbh | Control process for a laundry dryer working on the drum principle |
DE3920737A1 (en) * | 1989-06-24 | 1991-01-10 | Licentia Gmbh | Control device for program-controlled laundry dryer - registers loading state of drum and automatically adjusts performance to match load |
-
1991
- 1991-11-22 DE DE4138440A patent/DE4138440A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1485040A1 (en) * | 1963-09-05 | 1969-10-09 | Miele & Cie | Method for heating a tumble dryer |
DE1585995A1 (en) * | 1964-12-04 | 1969-10-16 | Siemens Elektrogeraete Gmbh | Tumble dryer working according to the drum principle |
US3514867A (en) * | 1968-06-21 | 1970-06-02 | Blackstone Corp | Clothes dryers with reversing drum |
DE3820815A1 (en) * | 1988-06-20 | 1989-12-21 | Bosch Siemens Hausgeraete | METHOD FOR DRYING LAUNDRY PIECES IN A DRUM DRYER AND DRUM DRYER SUITABLE FOR THIS |
DE3824799A1 (en) * | 1988-07-21 | 1990-01-25 | Licentia Gmbh | Control process for a laundry dryer working on the drum principle |
DE3920737A1 (en) * | 1989-06-24 | 1991-01-10 | Licentia Gmbh | Control device for program-controlled laundry dryer - registers loading state of drum and automatically adjusts performance to match load |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1433894A1 (en) * | 2002-12-24 | 2004-06-30 | Lg Electronics Inc. | Automatic dryer control based on load information |
US7735239B2 (en) | 2002-12-24 | 2010-06-15 | Lg Electronics Inc. | Automatic dryer control based on load information |
US8567091B2 (en) | 2002-12-24 | 2013-10-29 | Lg Electronics Inc | Automatic dryer control based on load information |
WO2013167488A3 (en) * | 2012-05-09 | 2014-05-08 | BSH Bosch und Siemens Hausgeräte GmbH | Method for operating a dryer at variable speed of a drive motor and dryer suitable therefor |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8139 | Disposal/non-payment of the annual fee | ||
8127 | New person/name/address of the applicant |
Owner name: AEG HAUSGERAETE GMBH, 90429 NUERNBERG, DE |