DE3738033A1 - DEVICE FOR MONITORING A HOUSEHOLD LAUNDRY DRYER - Google Patents
DEVICE FOR MONITORING A HOUSEHOLD LAUNDRY DRYERInfo
- Publication number
- DE3738033A1 DE3738033A1 DE19873738033 DE3738033A DE3738033A1 DE 3738033 A1 DE3738033 A1 DE 3738033A1 DE 19873738033 DE19873738033 DE 19873738033 DE 3738033 A DE3738033 A DE 3738033A DE 3738033 A1 DE3738033 A1 DE 3738033A1
- Authority
- DE
- Germany
- Prior art keywords
- heat exchanger
- electrical
- process air
- switching
- channels
- 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
- 238000012544 monitoring process Methods 0.000 title claims description 4
- 239000002826 coolant Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 10
- 238000009833 condensation Methods 0.000 claims description 9
- 230000005494 condensation Effects 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 4
- 230000001960 triggered effect Effects 0.000 claims description 3
- 230000004913 activation Effects 0.000 claims 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000003287 optical effect Effects 0.000 claims 1
- 230000000007 visual effect Effects 0.000 claims 1
- 238000004140 cleaning Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000009825 accumulation Methods 0.000 abstract 2
- 239000003570 air Substances 0.000 description 16
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 101150087426 Gnal gene Proteins 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000003197 gene knockdown Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
-
- 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
- D06F58/20—General details of domestic laundry dryers
- D06F58/24—Condensing arrangements
-
- 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
- D06F2103/32—Temperature
-
- 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
- D06F2103/44—Current or voltage
-
- 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
- D06F2103/58—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to condensation, e.g. condensate water level
-
- 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
- D06F2105/34—Filtering, e.g. control of lint removal devices
-
- 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
- D06F2105/58—Indications or alarms to the control system or to the user
-
- 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
- D06F2105/58—Indications or alarms to the control system or to the user
- D06F2105/60—Audible signals
-
- 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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/08—Control circuits or arrangements thereof
-
- 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
- D06F58/50—Responding to irregular working conditions, e.g. malfunctioning of blowers
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Drying Of Solid Materials (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
Description
Gegenstand der Erfindung ist eine Vorrichtung zum Überwachen eines als Wärmeaus tauscher ausgebildeten Kondenswasser-Abscheiders in einem Haushalt-Wäschetrock ner, in dem die flusenbelastete Prozeßluft durch Prozeßluftkanäle geleitet wird, die gegenüber den Kühlkanälen dicht sind, jedoch mit dem Kühlmedium in gutem Wär mekontakt stehen.The invention relates to a device for monitoring a heat as Exchanger trained condensate separator in a household clothes dryer ner, in which the lint-laden process air is passed through process air channels, the are tight against the cooling channels, but with the cooling medium in good heat stand in contact.
Bei einem bekannten Wäschetrockner gemäß der DE-PS 30 27 900 enthält der als Wärmeaustauscher ausgebildete Kondenswasser-Abscheider Platten, durch welchen das Kühlmedium geleitet wird. Das Kühlmedium kann aus der Umgebungsluft entnommen sein. Die warme Prozeßluft erwärmt die Oberflächen der Platten, die ihrerseits die Wärme an das Kühlmedium abgeben, so daß ein ökonomischer Betrieb ablaufen kann. Die Prozeßluft enthält neben Feuchtigkeit auch Wäscheflusen, die sich beide an den Plattenoberflächen niederschlagen. Während das Kondensat in einen Auffangbehälter fließt, bleiben allerdings viele Flusen auf den Plattenoberflächen haften und ver schlechtern zunehmend den Wirkungsgrad. Da der Wärmetauscher von der Bedie nungsperson nicht unmittelbar optisch überwacht werden kann, wird die Wirkungs grad-Verschlechterung nicht rechtzeitig bemerkt, so daß der Wäschetrockner häufig unwirtschaftlich betrieben wird und die Betriebszeiten unerwünscht lange dauern.In a known tumble dryer according to DE-PS 30 27 900 contains the as Heat exchanger-trained condensate separator plates through which the Coolant is passed. The cooling medium can be taken from the ambient air be. The warm process air heats the surfaces of the plates, which in turn the Give off heat to the cooling medium so that economical operation can take place. In addition to moisture, the process air also contains laundry fluff, both of which adhere to the Knock down plate surfaces. During the condensate in a collecting container flows, however, many fluff stick and ver on the plate surfaces efficiency is increasingly deteriorating. Since the heat exchanger from the operator person can not be directly monitored optically, the effect Degradation not noticed in time, so the dryer often is operated uneconomically and the operating times are undesirably long.
Bei einem aus der DE-OS 21 35 932 bekannten Wäschetrockner werden mittels eines vor die Kondensationsvorrichtung geschalteten Flusenfilters Flusen aus der Prozeßluft entfernt. Damit die Füllung des Flusenfilters überwacht werden kann, ist vor und hinter dem Flusenfilter an dem Prozeßluftkanal ein Differenzdruckmesser angeschlos sen, der bei Überschreiten einer Referenz-Druckdifferenz eine Abschaltung der Trocknerfunktion und Einschaltung einer Signallampe vornimmt.In a clothes dryer known from DE-OS 21 35 932 by means of a lint from the process air in front of the condensation device away. So that the filling of the lint filter can be monitored, is before and A differential pressure meter is connected to the process air duct behind the lint filter sen, which switches off when a reference pressure difference is exceeded Dryer function and switching on a signal lamp.
Ein solches Flusenfilter kann leider nicht alle Flusen aus der Prozeßluft entfernen. Daher gelangen immer noch viele Flusen in den Wärmetauscher und führen dort zur beschriebenen Wirkungsgrad-Verschlechterung.Unfortunately, such a lint filter cannot remove all lint from the process air. Therefore, a lot of fluff still gets into the heat exchanger and leads to it efficiency deterioration described.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung der eingangs ge nannten Art anzugeben, mit der in meßtechnisch eindeutiger Weise der Verflusungs zustand im Hinblick auf den Wirkungsgrad des Wärmetauschers sicher überwacht werden kann.The invention is therefore based on the object, a device of the ge Specify named type, with the in a technically clear way of the flux condition safely monitored with regard to the efficiency of the heat exchanger can be.
Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß am Eingang der Kühlkanäle in den Wärmetauscher und an deren Ausgang aus dem Wärmetauscher je ein Temperatur-Fühler für das Kühlmedium angeordnet und in eine Vergleichsschal tung geschaltet ist, in der die Differenz der zu den gemessenen Temperaturen äqui valenten elektrischen Werte als Differenzsignal mit einem elektrischen Referenzsi gnal vergleichbar ist, und daß beim Unterschreiten des Wertes des Referenzsignals durch den Wert des Differenzsignals eine Schaltmaßnahme auslösbar ist.This object is achieved according to the invention in that at the entrance of the Cooling channels in the heat exchanger and at their exit from the heat exchanger each a temperature sensor for the cooling medium and placed in a comparison scarf device is switched in which the difference between the measured temperatures equi valent electrical values as a differential signal with an electrical reference si gnal is comparable, and that when falling below the value of the reference signal a switching measure can be triggered by the value of the difference signal.
Die Erfindung zeigt erstmals einen Weg, auf welche Weise der Verflusunggrad eines Wäschetrockner-Wärmetauschers überwacht werden kann. Die hierfür einzusetzenden Mittel (zwei Temperatur-Sensoren in einer einfachen Signalbildungs-Schaltung) sind im Vergleich mit dem damit erzielbaren Nutzen sehr gering. Beim Zurkenntnisneh men des Verflusungszustandes im Wärmetauscher kann nun die Bedienungsperson durch Reinigung des Wärmetauschers den konstruktiv bedingten, guten Wirkungsgrad wieder herstellen. Auch ist es möglich, daß die Schaltmaßnahme das elektrische Sperren der Wiedereinschaltung des Wäschetrockners und/oder die Fortführung des laufenden Trocknungsprozesses begrenzt. Besonders vorteilhaft ist es, wie in einer prioritätsgleichen Anmeldung der Anmeldung angegeben, zum selbsttätigen Reinigen des Wärmetauschers eine Spülvorrichtung zu verwenden und diese durch die Ver gleichsschaltung wirksam zu schalten.The invention shows for the first time a way in which the degree of condensation of a Tumble dryer heat exchanger can be monitored. The ones to be used for this Means (two temperature sensors in a simple signal formation circuit) are very low compared to the benefits that can be achieved with it Acknowledgment The operator can now see the state of condensation in the heat exchanger by cleaning the heat exchanger, the design-related, good efficiency restore. It is also possible that the switching measure the electrical Block the restart of the dryer and / or the continuation of the current drying process limited. It is particularly advantageous, as in a Priority registration of the registration specified, for automatic cleaning the heat exchanger to use a flushing device and this by the Ver to activate the same circuit.
In den Zeichnungen ist ein Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung schematisch dargestellt. Im folgenden werden die Erfindung und weitere vorteilhafte Ausgestaltungen näher erläutert. Es zeigtIn the drawings is an embodiment of a device according to the invention shown schematically. In the following the invention and further advantageous Refinements explained in more detail. It shows
Fig. 1 einen erfindungsgemäß ausgestatteten, als Wärmetauscher aus gebildeten Kondenswasser-Abscheider, Fig. 1 a, as a heat exchanger formed from condensed water separator according to the invention equipped,
Fig. 2 ein Diagramm der gemessenen Temperatur und des Wirkungs grades des Wärmetauschers über den Verflusungsgrad und Fig. 2 is a diagram of the measured temperature and efficiency of the heat exchanger via the degree of condensation and
Fig. 3 eine Signalbildungsschaltung mit erfindungsgemäßen Tempera tur-Sensoren. Fig. 3 shows a signal formation circuit with temperature sensors according to the invention.
Der bekannte Wärmetauscher 1 besteht aus mehreren Platten 2, durch welche das Kühlmedium in Richtung des weißen und des quergestreiften Pfeiles durch gitterför mige Durchbrüche 4 und langgestreckte Kühlluftkanäle geleitet wird. Die feuchte Prozeßluft strömt in Richtung des ausgefüllten und des längsgestreiften Pfeiles durch Kanäle 6 des Wärmetauschers hindurch. Dabei erwärmen sich die Platten 2 und da mit auch die frische Kühlluft. Beim Durchleiten der feuchten Prozeßluft durch den Wärmetauscher fällt das Kondensat und damit auch die Flusen an den vergleichswei se kühleren Oberflächen der Platten 2 aus. Durch die abgesetzten Flusen wird der Wärmeübergang behindert, so daß der Wirkungsgrad des Wärmetauschers merklich sinkt. The known heat exchanger 1 consists of several plates 2 , through which the cooling medium is passed in the direction of the white and the streaked arrow through gitterför shaped openings 4 and elongated cooling air channels. The moist process air flows in the direction of the filled and the longitudinally striped arrow through channels 6 of the heat exchanger. The plates 2 heat up, and with them the fresh cooling air. When the moist process air is passed through the heat exchanger, the condensate and thus also the fluff on the comparatively cool surfaces of the plates 2 fail. The heat transfer is hindered by the fluff so that the efficiency of the heat exchanger drops noticeably.
Die Frischluft wird dem Wärmetauscher über strichpunktiert angedeutete Kühlluft- Leithauben zugeführt (Eingang 3) bzw. vom Wärmetauscher abgeführt (Ausgang 5). Vor dem Eingang 3 ist ein von der frischen Kühlluft bestrichener Temperaturfühler 7 und hinter dem Ausgang 5 ein weiterer, von der erwärmten Kühlluft bestrichener Temperaturfühler 8 angeordnet. Sind die Platten 2 verflust, so verringert sich der Wärmeübergang und die Temperaturdifferenz von der frischen zur erwärmten Kühl luft fällt stark ab. Nur bei einer genügend großen Temperaturdifferenz zwischen den Meßfühlern 7 und 8 ist ein guter Wirkungsgrad des Wärmetauschers möglich.The fresh air is fed to the heat exchanger via cooling air guide hoods indicated by dash-dotted lines (input 3 ) or discharged from the heat exchanger (output 5 ). A temperature sensor 7, which is swept by the fresh cooling air, is arranged in front of the inlet 3 and a further temperature sensor 8 , which is swept by the heated cooling air, is arranged behind the outlet 5 . If the plates 2 are cursed, the heat transfer is reduced and the temperature difference from the fresh to the heated cooling air drops sharply. A good efficiency of the heat exchanger is only possible if there is a sufficiently large temperature difference between the sensors 7 and 8 .
Im Diagramm gemäß Fig. 2 sind auf der Abszisse der Verflusungsgrad V und auf der Ordinate der Wirkungsgrad η des Wärmetauschers und die Temperatur δ aufgetragen. Der Wirkungsgrad η = 1 zu Beginn des Trocknungsprozesses bei flu senfreien Platten des Wärmetauschers gegeben, d. h. die Temperaturfühler 7 und 8 messen eine große Differenz Δ δ 1. Je nach dem Verflusungszustand der Platten 2 fällt auch dementsprechend der Wirkungsgrad η und erreicht beispielsweise bei 8′ den gestrichelt dargestellten Schwellwert η 2. Hier soll die Vorrichtung zum Über wachen des Verflusungsgrades in Funktion treten, also z. B. ein Signal auslösen; denn die Platten 2 müßten jetzt gereinigt werden. Andernfalls sänke der Wirkungsgrad weiter und die Temperaturdifferenz ginge gegen Null. Der Wirkungsgrad η 2 bei Errei chen des Schwellwertes beträgt etwa 60% des konstruktiv bedingten Wirkungsgrades des Wärmetauschers.In the diagram according to FIG. 2, the degree of condensation V is plotted on the abscissa and the efficiency η of the heat exchanger and the temperature δ are plotted on the ordinate. The efficiency η = 1 at the beginning of the drying process given flu-free plates of the heat exchanger, ie the temperature sensors 7 and 8 measure a large difference Δ δ 1. Depending on the state of condensation of the plates 2 , the efficiency η falls accordingly and reaches, for example, 8 ′ the threshold value η shown in dashed lines. Here, the device for monitoring the degree of condensation should come into operation, that is to say, for. B. trigger a signal; because the plates 2 should now be cleaned. Otherwise the efficiency would drop further and the temperature difference would go to zero. The efficiency η 2 when the threshold is reached is approximately 60% of the design-related efficiency of the heat exchanger.
In Fig. 3 sind die Temperaturfühler 7 und 8 als Spannungsteiler in eine Meßbrücke geschaltet, wobei die Basis 10 des Transistors 11 an den Spannungsteiler gelegt ist, so daß die Basis-Emitter-Strecke als Brückenspannungs-Meßfühler dient. Bei genü gend großer Brückenspannung ist der Transistor auf Durchgang geschaltet, so daß die Betriebsspannung am Eingang A der Impulsformerstufe 12 anliegt. Das Eingangs signal wird intern mit einem Referenzsignal verglichen. Sobald das Referenzsignal unterschritten ist, wird am Ausgang 13 der Impulsformerstufe 12 ein Schaltsignal ausgelöst. Eine Rückkopplung über den Transistor 15 verstärkt ein möglicherweise schwaches Eingangssignal A. Das Schaltsignal am Ausgang 13 bringt das Relais 17 in der Leitung 16 zum Ansprechen und den Schalter 18 zum Schließen. Dadurch wird die Vorrichtung 19 zum Anzeigen des unzulässig hohen Verflusungsgrades, z. B. eine Lampe oder ein Summer, betätigt. Ferner kann eine die Platten 2 selbsttätig rei nigende Vorrichtung, z. B. eine Spüleinrichtung, in Funktion treten, wie eine solche in der prioritätsgleichen Anmeldung der Anmelderin beschrieben ist. Auch besteht die Möglichkeit, daß die Schaltmaßnahme das elektrische Sperren der Wiederein schaltung des Wäschetrockners und/oder das Fortführen des laufenden Trocknungspro zesses ist.In Fig. 3, the temperature sensors 7 and 8 are connected as a voltage divider in a measuring bridge, the base 10 of the transistor 11 being connected to the voltage divider, so that the base-emitter path serves as a bridge voltage sensor. With a sufficiently large bridge voltage, the transistor is switched to continuity, so that the operating voltage at input A of pulse shaping stage 12 is present. The input signal is compared internally with a reference signal. As soon as the reference signal is undershot, a switching signal is triggered at the output 13 of the pulse shaper stage 12 . Feedback via transistor 15 amplifies a possibly weak input signal A. The switching signal at output 13 causes relay 17 in line 16 to respond and switch 18 to close. As a result, the device 19 for displaying the impermissibly high degree of condensation, for. B. a lamp or a buzzer operated. Furthermore, the plates 2 automatically cleaning device, z. B. a flushing device, come into operation, as is described in the applicant's application of the same priority. There is also the possibility that the switching measure is the electrical locking of the re-switching of the dryer and / or the continuation of the ongoing drying process.
Es sei noch bemerkt, daß die Temperaturdifferenz am Wärmetauscher 1 weitgehend unabhängig von der Raumtemperatur ist, die bis zu 35°C betragen kann; auch ist sie unabhängig von der Beladung des Wäschetrockners, so daß die Funktion des Schwell wertschalters gemäß Fig. 3 nicht beeinträchtigt wird.It should also be noted that the temperature difference at the heat exchanger 1 is largely independent of the room temperature, which can be up to 35 ° C; it is also independent of the load of the dryer, so that the function of the threshold switch according to FIG. 3 is not impaired.
Claims (5)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19873738033 DE3738033A1 (en) | 1987-11-09 | 1987-11-09 | DEVICE FOR MONITORING A HOUSEHOLD LAUNDRY DRYER |
| GB8824548A GB2212253B (en) | 1987-11-09 | 1988-10-20 | Heat exchange means |
| HK92495A HK92495A (en) | 1987-11-09 | 1995-06-08 | Heat exchange means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19873738033 DE3738033A1 (en) | 1987-11-09 | 1987-11-09 | DEVICE FOR MONITORING A HOUSEHOLD LAUNDRY DRYER |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3738033A1 true DE3738033A1 (en) | 1989-05-18 |
| DE3738033C2 DE3738033C2 (en) | 1993-09-23 |
Family
ID=6340132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19873738033 Granted DE3738033A1 (en) | 1987-11-09 | 1987-11-09 | DEVICE FOR MONITORING A HOUSEHOLD LAUNDRY DRYER |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE3738033A1 (en) |
| GB (1) | GB2212253B (en) |
| HK (1) | HK92495A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3930727A1 (en) * | 1989-09-14 | 1991-03-28 | Miele & Cie | Washing machine monitor - measures pressure difference over non-critical path to indicate build-up of dirt and lint |
| DE4211012A1 (en) * | 1992-04-02 | 1993-10-07 | Bosch Siemens Hausgeraete | Method and device for controlling a drying process |
| EP0709516A1 (en) * | 1994-10-26 | 1996-05-01 | Ciapem | Monitoring device for the cleaning of the condenser of a drier |
| US6644850B2 (en) | 2001-05-22 | 2003-11-11 | Bayerische Motoren Werke Aktiengesellschaft | Temperature sensing device for an internal-combustion engine |
| EP1813712A1 (en) * | 2006-01-26 | 2007-08-01 | BSH Bosch und Siemens Hausgeräte GmbH | Dryer and method for processing goods |
| DE102008006347A1 (en) * | 2008-01-28 | 2009-07-30 | BSH Bosch und Siemens Hausgeräte GmbH | Condensation dryer and method for its operation |
| DE102008040846A1 (en) * | 2008-07-29 | 2010-02-04 | BSH Bosch und Siemens Hausgeräte GmbH | Condensation dryer for use as exhaust air dryer, has drum chamber for drying articles, processing air channel, control unit and mediums for detecting forthcoming cleaning requirement for heat exchanger |
| DE102008054693A1 (en) * | 2008-12-16 | 2010-06-17 | BSH Bosch und Siemens Hausgeräte GmbH | Condensation dryer and method for its operation |
| WO2011154252A1 (en) | 2010-06-09 | 2011-12-15 | BSH Bosch und Siemens Hausgeräte GmbH | Condensation dryer with integrated heat-exchanger cleaning, and method for operating the same |
| DE19533241C5 (en) * | 1995-09-08 | 2012-03-22 | Electrolux Rothenburg Gmbh Factory And Development | Method and device for the thermal protection of tumble dryers |
| DE102012209826A1 (en) | 2012-06-12 | 2013-12-12 | BSH Bosch und Siemens Hausgeräte GmbH | Condensation dryer with a pump and method for its operation |
| WO2013088316A3 (en) * | 2011-12-13 | 2014-01-03 | BSH Bosch und Siemens Hausgeräte GmbH | Method for operating a washer dryer with a sensor placed between a tub and a heat exchanger, and related washer dryer |
| DE102012223436A1 (en) | 2012-12-17 | 2014-06-18 | BSH Bosch und Siemens Hausgeräte GmbH | Household laundry drying machine with lint filter cleaning device |
| EP2998433A1 (en) * | 2014-09-18 | 2016-03-23 | BSH Hausgeräte GmbH | Clothes dryer and drying method thereof |
| WO2017089027A1 (en) * | 2015-11-24 | 2017-06-01 | BSH Hausgeräte GmbH | Operating a laundry drying device with a lint filter and a lint trap |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3928698A1 (en) * | 1989-08-30 | 1991-03-07 | Albrecht Wulff | DRYING METHOD AND LAUNDRY DRYER FOR CARRYING OUT THE METHOD |
| DE102008026788A1 (en) * | 2008-06-04 | 2009-12-10 | BSH Bosch und Siemens Hausgeräte GmbH | Method for cleaning the heat exchanger of a dryer |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1585998A1 (en) * | 1964-12-14 | 1969-11-20 | Siemens Elektrogeraete Gmbh | Tumble dryer working according to the drum principle |
| DE7104612U (en) * | 1972-07-13 | Siemens Gmbh | Tumble dryer working according to the drum principle | |
| DE2135932A1 (en) * | 1971-07-15 | 1973-01-25 | Siemens Elektrogeraete Gmbh | DRYER WORKING ACCORDING TO THE DRUM PRINCIPLE WITH AIR CIRCULATION |
| DE7147412U (en) * | 1971-12-13 | 1973-05-24 | Siemens Electrogeraete Gmbh | Clothes dryer |
| DE2643497A1 (en) * | 1976-09-23 | 1978-04-06 | Thorn Domestic Appliances Ltd | Air drier with chamber for drying objects - has sensors detecting chamber outlet and ambient air temperature for regulating heat supply |
| DE8210051U1 (en) * | 1981-04-15 | 1982-08-12 | Industrie Zanussi S.p.A., 33170 Pordenone, Udine | LAUNDRY DRYER WITH FOOT FILTER AND MONITORING DEVICE THEREFOR |
| DE3237839A1 (en) * | 1981-11-02 | 1983-05-19 | Nissan Motor Co., Ltd., Yokohama, Kanagawa | DEVICE AND METHOD FOR MEASURING A TEMPERATURE DIFFERENCE |
| DE3304422A1 (en) * | 1983-02-09 | 1984-08-09 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | Method for requesting the emptying of a condensate-collecting vessel in a domestic laundry drier |
| DE2933513C2 (en) * | 1979-08-18 | 1985-08-08 | Miele & Cie GmbH & Co, 4830 Gütersloh | Tumble dryer with condensation device |
| DE3027900C2 (en) * | 1980-07-23 | 1986-11-06 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | Air-cooled heat exchanger for household tumble dryers |
-
1987
- 1987-11-09 DE DE19873738033 patent/DE3738033A1/en active Granted
-
1988
- 1988-10-20 GB GB8824548A patent/GB2212253B/en not_active Expired - Lifetime
-
1995
- 1995-06-08 HK HK92495A patent/HK92495A/en not_active IP Right Cessation
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| DE7104612U (en) * | 1972-07-13 | Siemens Gmbh | Tumble dryer working according to the drum principle | |
| DE1585998A1 (en) * | 1964-12-14 | 1969-11-20 | Siemens Elektrogeraete Gmbh | Tumble dryer working according to the drum principle |
| DE2135932A1 (en) * | 1971-07-15 | 1973-01-25 | Siemens Elektrogeraete Gmbh | DRYER WORKING ACCORDING TO THE DRUM PRINCIPLE WITH AIR CIRCULATION |
| DE7147412U (en) * | 1971-12-13 | 1973-05-24 | Siemens Electrogeraete Gmbh | Clothes dryer |
| DE2643497A1 (en) * | 1976-09-23 | 1978-04-06 | Thorn Domestic Appliances Ltd | Air drier with chamber for drying objects - has sensors detecting chamber outlet and ambient air temperature for regulating heat supply |
| DE2933513C2 (en) * | 1979-08-18 | 1985-08-08 | Miele & Cie GmbH & Co, 4830 Gütersloh | Tumble dryer with condensation device |
| DE3027900C2 (en) * | 1980-07-23 | 1986-11-06 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | Air-cooled heat exchanger for household tumble dryers |
| DE8210051U1 (en) * | 1981-04-15 | 1982-08-12 | Industrie Zanussi S.p.A., 33170 Pordenone, Udine | LAUNDRY DRYER WITH FOOT FILTER AND MONITORING DEVICE THEREFOR |
| DE3237839A1 (en) * | 1981-11-02 | 1983-05-19 | Nissan Motor Co., Ltd., Yokohama, Kanagawa | DEVICE AND METHOD FOR MEASURING A TEMPERATURE DIFFERENCE |
| DE3304422A1 (en) * | 1983-02-09 | 1984-08-09 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | Method for requesting the emptying of a condensate-collecting vessel in a domestic laundry drier |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3930727A1 (en) * | 1989-09-14 | 1991-03-28 | Miele & Cie | Washing machine monitor - measures pressure difference over non-critical path to indicate build-up of dirt and lint |
| DE4211012A1 (en) * | 1992-04-02 | 1993-10-07 | Bosch Siemens Hausgeraete | Method and device for controlling a drying process |
| DE4211012C2 (en) * | 1992-04-02 | 2000-11-23 | Bsh Bosch Siemens Hausgeraete | Method and device for controlling a drying process |
| EP0709516A1 (en) * | 1994-10-26 | 1996-05-01 | Ciapem | Monitoring device for the cleaning of the condenser of a drier |
| FR2726298A1 (en) * | 1994-10-26 | 1996-05-03 | Ciapem | SIGNALING DEVICE FOR CLEANING A DRIVER CAPACITOR |
| DE19533241C5 (en) * | 1995-09-08 | 2012-03-22 | Electrolux Rothenburg Gmbh Factory And Development | Method and device for the thermal protection of tumble dryers |
| US6644850B2 (en) | 2001-05-22 | 2003-11-11 | Bayerische Motoren Werke Aktiengesellschaft | Temperature sensing device for an internal-combustion engine |
| EP1813712A1 (en) * | 2006-01-26 | 2007-08-01 | BSH Bosch und Siemens Hausgeräte GmbH | Dryer and method for processing goods |
| DE102008006347A1 (en) * | 2008-01-28 | 2009-07-30 | BSH Bosch und Siemens Hausgeräte GmbH | Condensation dryer and method for its operation |
| DE102008040846A1 (en) * | 2008-07-29 | 2010-02-04 | BSH Bosch und Siemens Hausgeräte GmbH | Condensation dryer for use as exhaust air dryer, has drum chamber for drying articles, processing air channel, control unit and mediums for detecting forthcoming cleaning requirement for heat exchanger |
| EP2199455A2 (en) | 2008-12-16 | 2010-06-23 | BSH Bosch und Siemens Hausgeräte GmbH | Condensation dryer and method for its operation |
| DE102008054693A1 (en) * | 2008-12-16 | 2010-06-17 | BSH Bosch und Siemens Hausgeräte GmbH | Condensation dryer and method for its operation |
| WO2011154252A1 (en) | 2010-06-09 | 2011-12-15 | BSH Bosch und Siemens Hausgeräte GmbH | Condensation dryer with integrated heat-exchanger cleaning, and method for operating the same |
| DE102010029892A1 (en) | 2010-06-09 | 2011-12-15 | BSH Bosch und Siemens Hausgeräte GmbH | Condensation dryer with integrated heat exchanger cleaning and process for its operation |
| WO2013088316A3 (en) * | 2011-12-13 | 2014-01-03 | BSH Bosch und Siemens Hausgeräte GmbH | Method for operating a washer dryer with a sensor placed between a tub and a heat exchanger, and related washer dryer |
| DE102012209826A1 (en) | 2012-06-12 | 2013-12-12 | BSH Bosch und Siemens Hausgeräte GmbH | Condensation dryer with a pump and method for its operation |
| WO2013186114A1 (en) * | 2012-06-12 | 2013-12-19 | BSH Bosch und Siemens Hausgeräte GmbH | Condensation dryer with a pump and method for operation thereof |
| DE102012223436A1 (en) | 2012-12-17 | 2014-06-18 | BSH Bosch und Siemens Hausgeräte GmbH | Household laundry drying machine with lint filter cleaning device |
| WO2014095465A1 (en) * | 2012-12-17 | 2014-06-26 | BSH Bosch und Siemens Hausgeräte GmbH | Household laundry dryer with cleaning device for lint filter |
| EP2998433A1 (en) * | 2014-09-18 | 2016-03-23 | BSH Hausgeräte GmbH | Clothes dryer and drying method thereof |
| WO2017089027A1 (en) * | 2015-11-24 | 2017-06-01 | BSH Hausgeräte GmbH | Operating a laundry drying device with a lint filter and a lint trap |
Also Published As
| Publication number | Publication date |
|---|---|
| HK92495A (en) | 1995-06-16 |
| GB8824548D0 (en) | 1988-11-23 |
| GB2212253B (en) | 1991-05-22 |
| DE3738033C2 (en) | 1993-09-23 |
| GB2212253A (en) | 1989-07-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8101 | Request for examination as to novelty | ||
| 8105 | Search report available | ||
| 8110 | Request for examination paragraph 44 | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8327 | Change in the person/name/address of the patent owner |
Owner name: BSH BOSCH UND SIEMENS HAUSGERAETE GMBH, 81669 MUEN |