DE3738031A1 - Method and device for removing lint from a condensation-water separator are designed as a heat exchanger - Google Patents
Method and device for removing lint from a condensation-water separator are designed as a heat exchangerInfo
- Publication number
- DE3738031A1 DE3738031A1 DE19873738031 DE3738031A DE3738031A1 DE 3738031 A1 DE3738031 A1 DE 3738031A1 DE 19873738031 DE19873738031 DE 19873738031 DE 3738031 A DE3738031 A DE 3738031A DE 3738031 A1 DE3738031 A1 DE 3738031A1
- Authority
- DE
- Germany
- Prior art keywords
- heat exchanger
- condensate
- process air
- plates
- condensation
- 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
-
- 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
- D06F58/22—Lint collecting 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
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
- D06F58/24—Condensing arrangements
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
Description
Die Erfindung bezieht sich auf ein Verfahren und auf eine Vorrichtung zum Entfer nen von Flusen aus einem als Wärmetauscher ausgebildeten Kondenswasser-Abschei der - im nachfolgenden nur "Wärmetauscher" genannt - eines Wäschetrockners, bei dem die Prozeßluft durch Luftführungskammern geführt und das anfallende Konden sat in einem Auffangbehälter aufgefangen sowie von dort über eine Steigleitung ab geführt oder in einen im Wäschetrockner höher gelegenen und entnehmbaren Kon densat-Sammelbehälter gepumpt wird.The invention relates to a method and a device for removal NEN of fluff from a condensate separator designed as a heat exchanger the - in the following only called "heat exchanger" - a clothes dryer, at which the process air passed through air guide chambers and the resulting condensate sat collected in a collecting container and from there via a riser led or in a higher lying in the dryer and removable Kon densat collecting container is pumped.
Derartige Wärmetauscher sind bekannt (DE-PS 30 27 900) und bestehen beispiels weise aus einem Gehäuse, in dem mit langgestreckten Luftführungs-Rinnen versehene Platten im Abstand übereinander angeordnet sind; die Prozeßluft wird zwischen den Platten (innerhalb von Luftführungskammern hindurch geleitet und die Kühlluft wird senkrecht hierzu durch die Platten im Gehäuse geleitet. Such heat exchangers are known (DE-PS 30 27 900) and exist for example wise from a housing in which provided with elongated air guide channels Plates are spaced one above the other; the process air is between the Plates (passed through inside air ducts and the cooling air is passed perpendicularly through the plates in the housing.
Im Gehäuse sind die Platten in Leisten gehalten und können gelegentlich zum Ent fernen der Flusen entnommen werden. Die Tunnelseitenwandungen zwischen den Lei sten jedes Paares besitzen Durchbrüche zum Einspeisen der Kühlluft in die Luftfüh rungs-Rinnen der Platten. Damit das Kondensat gut abfließen kann, sind die Kanal teile quer zur Strömungsrichtung der Abluft geneigt gehalten derart, daß das abge schiedene Wasser von den Platten abtropfen und von einer Kondensatsammelrinne in einen Auffangbehälter fließen kann. In der vorgenannten Patentschrift wurde schon zum Ausdruck gebracht, daß die Handhabung der bekannten Platten zum Zwecke der Reinigung unbequem ist, weil alle Platten einzeln entnommen und beim Zusammen bau in genau einzuhaltender Reihenfolge wieder eingehängt werden müssen. Dabei kann es vorkommen, daß die Plattenarten leicht zu Verwechslungen und dem zufolge zu einer Funktionsstörung des Wärmetauschers führen können.The panels are held in strips in the housing and can occasionally be removed far away from the fluff. The tunnel side walls between the lei Most of the pairs have openings for feeding the cooling air into the air duct gaps of the plates. The channels are so that the condensate can drain off easily parts held inclined transversely to the flow direction of the exhaust air such that the abge drip separated water from the plates and from a condensate collection channel can flow a collecting container. In the aforementioned patent specification expressed that the handling of the known plates for the purpose of Cleaning is inconvenient because all plates are removed individually and when put together construction must be re-attached in exactly the same order. Here it can happen that the plate types are easily confused and the can lead to malfunction of the heat exchanger.
Es ist dabei Zweck der vorliegenden Erfindung, diese Nachteile zu beheben und ei nen luftgekühlten Wärmetauscher für Haushalts-Wäschetrockner zu schaffen, bei dem das Entfernen der Flusen vermeidbar wird.It is the purpose of the present invention to overcome these drawbacks to create an air-cooled heat exchanger for household clothes dryers which can be avoided by removing the fluff.
Dies geschieht gemäß der im Patentanspruch 1 beschriebenen erfindungsgemäßen Verfahrensweise. Verfährt man derart, so ist ein gelegentlicher Ausbau der Platten nicht mehr erforderlich, so daß dadurch viel Zeit und Kosten eingespart und Fehl funktionen vermieden werden können. Das Abspülen der Wäscheflusen von den Plat tenoberflächen der Prozeßluftkanäle kann nach einem weiteren Merkmal des erfin dungsgemäßen Verfahrens in einem Zeitintervall kurz vor Beendigung des Wäsche trockenprogrammes erfolgen. Der Wäschetrockner ist sodann für den nächsten Troc kenprozeß voll einsatzbereit. Es hat sich gezeigt, daß zum Ausspülen der Luftfüh rungskammern für einen Haushalts-Wäschetrockner eine Flüssigkeitsmenge von 500 cm3 ausreicht. Im allgemeinen genügt eine Spülzeit zum Abspülen der Wäscheflusen von den Platten von ungefähr 30 Sekunden. Beginn und Ende der Spülzeit können auch während des Trocknungsprozesses liegen.This is done in accordance with the procedure according to the invention described in claim 1. Doing so, an occasional expansion of the plates is no longer necessary, so that a lot of time and costs can be saved and malfunctions can be avoided. The washing of the fluff from the plat tenoberflächen the process air channels can be done according to a further feature of the inventive method in a time interval shortly before the end of the laundry drying program. The dryer is then fully operational for the next drying process. It has been shown that for rinsing the air guide chambers for a household clothes dryer, a liquid amount of 500 cm 3 is sufficient. Generally, a rinsing time of about 30 seconds is sufficient to rinse the laundry fluff off the plates. The start and end of the rinsing time can also be during the drying process.
In unserer prioritätsgleichen Anmeldung "Anzeigevorrichtung für einen Wäschetrock ner" wurde eine Schwellwertschaltung für den Wärmetauscher angegeben, die in Funktion tritt, wenn ein Verflusungsgrad überschritten wird und der Wirkungsgrad des Wärmetauschers sinkt. Diese Vorrichtung kann zur Steuerung der Flusenspülung beim erfindungsgemäßen Verfahren verwendet werden. Man kann die Spüleinrich tung als Bestandteil des Wärmetauschers ausbilden, man kann sie aber auch als selbständige Einheit benachbart vom Wärmetauscher anordnen. Vorzugsweise besteht die Spüleinrichtung aus einer Leiste, an welcher in die Zuführungskanäle der Prozeß luft gerichtete Düsen angeordnet sind. Derartige Sprühleisten können links oder rechts, waagerecht oder senkrecht bzw. auch beidseitig am oder benachbart vom Wärmetauscher angeordnet sein. Selbstverständlich besteht auch die Möglichkeit, die Sprühleiste oder -leisten oben oder unten am oder benachbart vom Gehäuse anzuord nen. Die Sprühdüsen sind über eine Leitung mit der Steigleitung verbunden, in der mindestens ein elektromagnetisch steuerbares Ventil angeordnet ist. Die Sprühdüsen besitzen eine derartige Weite, daß ein Verstopfen durch Flusen nicht stattfinden kann.In our priority application "display device for a clothes dryer ner ", a threshold circuit for the heat exchanger was specified, which in Function occurs when a degree of condensation is exceeded and the efficiency of the heat exchanger drops. This device can be used to control the lint rinsing be used in the method according to the invention. You can do the flushing training as part of the heat exchanger, but you can also as Place an independent unit next to the heat exchanger. Preferably there is the flushing device from a bar on which the process in the feed channels air-directed nozzles are arranged. Such spray bars can be left or right, horizontal or vertical or also on both sides on or adjacent to Heat exchanger to be arranged. Of course there is also the possibility of Arrange the spray bar or bars at the top or bottom of or adjacent to the housing nen. The spray nozzles are connected via a line to the riser in the at least one electromagnetically controllable valve is arranged. The spray nozzles have such a width that clogging by fluff does not take place can.
Weitere Einzelheiten der Erfindung sind aus den Zeichnungen ersichtlich. Es zeigtFurther details of the invention can be seen from the drawings. It shows
Fig. 1 einen Wärmetauscher mit Sprühvorrichtung, Fig. 1 a heat exchanger having spray device,
Fig. 2 eine Platte des Wärmetauschers mit Spülvorrichtung und Fig. 2 is a plate of the heat exchanger with flushing device and
Fig. 3 den Aufbau der Vorrichtung zum Abspülen der Plattenoberflächen des Wärmetauschers mit Kondensatwasser. Fig. 3 shows the structure of the device for rinsing the plate surfaces of the heat exchanger with condensate.
Der Wärmetauscher gemäß Fig. 1 besteht aus einem Gehäuse 1, in dem im Abstand Leisten 2 angeordnet sind, die zum Einführen von mit langgestreckten Hohlräumen 3 versehenen Platten 4 vorgesehen sind. Die feuchte Prozeßluft wird in Richtung des Pfeiles 5 durch die Prozeßluft-Kanäle 6 zwischen den Platten 4 geleitet. In den Sei tenwänden 7 des Gehäuses 1 befinden sich Durchbrüche zum Hindurchführen der kühlen Frischluft in Richtung der Pfeile 8. Die Prozeßluft erwärmt so die Oberflä chen der Platten 6, so daß sich auch die Frischluft in den langgestreckten Hohlräu men 3 der Platten 6 erwärmt. Der Plattenstapel bzw. das Gehäuse ist etwas nach vorne schräg geneigt im Trockner angeordnet, derart, daß das Kondensat von den Platten in eine Rinne 9 abtropft, von wo es in einen hier nicht dargestellten Auf fangbehälter fließt. Mit der Prozeßluft setzen sich auch Flusen vornehmlich auf der Oberfläche der Platten ab. Diese Flusen behindern den Wärmeübergang zu den Plat ten und damit verringert sich die Erwärmung der Frischluft. Der Wirkungsgrad des Wärmetauschers sinkt. Eine Sprüheinrichtung 10 mit Düsen 11 wird über eine Lei tung 12 mit Kondenswasser beaufschlagt. Die Sprühdüsen sind in die Abluftkanäle 6 gerichtet. Beim Betrieb der Sprüheinrichtung werden, wie die Fig. 2 zeigt, die Flu sen von den Plattenoberflächen 4 abgespült, wobei das Kondensat 13 in die Rinne 9 (Fig. 1) fließt.The heat exchanger according to Fig. 1 consists of a housing 1, are arranged in the spaced strips 2, which are provided for introducing provided with elongated cavities 3 plates 4. The moist process air is passed in the direction of arrow 5 through the process air channels 6 between the plates 4 . In the side walls 7 of the housing 1 there are openings for the passage of the cool fresh air in the direction of the arrows 8 . The process air thus heats the surface of the plates 6 , so that the fresh air in the elongated Hohlräu men 3 of the plates 6 is heated. The plate stack or the housing is arranged slightly inclined to the front in the dryer, such that the condensate drips from the plates into a trough 9 , from where it flows into a collecting container, not shown here. With the process air, fluff also settles primarily on the surface of the plates. These fluff hinder the heat transfer to the plates and thus the warming of the fresh air is reduced. The efficiency of the heat exchanger drops. A spray device 10 with nozzles 11 is acted upon via a line 12 with condensed water. The spray nozzles are directed into the exhaust air channels 6 . During operation of the spray device, as shown in FIG. 2, the fluids are rinsed off the plate surfaces 4 , the condensate 13 flowing into the channel 9 ( FIG. 1).
Wie ersichtlich (Fig. 2) sind die Platten 4 etwas nach vorne geneigt, so daß der Abfluß des Kondensats dadurch begünstigt wird. Die Sprühdüsen 11 können einen be grenzten Sprühwinkel in der Horizontal- und in der Vertikalachse aufweisen.As can be seen ( Fig. 2), the plates 4 are slightly inclined forward, so that the drainage of the condensate is promoted. The spray nozzles 11 may have a limited spray angle in the horizontal and in the vertical axes.
Fig. 3 zeigt die Anordnung der gemäß dem Verfahren arbeitenden Vorrichtung. Das von den Platten 4 abtropfende Kondensat strömt in den Auffangbehälter 14 und wird von dort über die Pumpensaugleitung 15 mittels einer Pumpe 16 in den hochgelege nen Kondensat-Sammelbehälter 17 gepumpt. Stattdessen kann das Kondensat aber auch in eine örtliche Abwasserleitung gefördert werden. In der Leitung 15 befindet sich ein Ventil 18 und in der Leitung 12 ein weiteres Ventil 19. Soll die Sprühein richtung 10 in Betrieb genommen werden, so schließt das Ventil 18 und das Ventil 19 öffnet, so daß die Leistung der Pumpe 16 voll zum Betrieb der Sprüheinrichtung 10 dient. Fig. 3 shows the arrangement of the working according to the process device. The condensate dripping from the plates 4 flows into the collecting container 14 and is pumped from there via the pump suction line 15 by means of a pump 16 into the elevated condensate collecting container 17 . Instead, the condensate can also be pumped into a local sewer. There is a valve 18 in line 15 and a further valve 19 in line 12 . If the spraying device 10 is to be put into operation, the valve 18 closes and the valve 19 opens, so that the power of the pump 16 fully serves to operate the spraying device 10 .
Es kann aber auch ein Zweiwegeventil 20 vorgesehen sein, welches die Leitung 15 entweder mit der Leitung 12 oder mit der Leitung 151 zum Sammelbehälter 17 ver bindet. Auch besteht die Möglichkeit, das Ventil 18 einzusparen und nur die Leitung 12 mit einem Ventil 19 zu versehen.But it can also be provided a two-way valve 20 , which binds the line 15 ver either with the line 12 or with the line 151 to the collecting container 17 . There is also the possibility of saving the valve 18 and providing only the line 12 with a valve 19 .
Während der Wärmetauscher W während des Trocknungsprozesses der Wäsche ständig in Betrieb bleibt, wird die Sprüheinrichtung beispielsweise nur am Schluß des Trock nungsprozesses betrieben, wobei das Ventil 18 in der Leitung 15 schließt und das Ventil 19 in der Leitung 12 öffnet. Dabei werden die Flusen von den Platten 4 ab gespült und geraten in den Auffangbehälter 14 bzw. werden über die Pumpenlei tungen 15 und 151 in den Sammelbehälter 17 gepumpt.While the heat exchanger W remains in operation continuously during the drying process of the laundry, the spray device is operated, for example, only at the end of the drying process, the valve 18 in line 15 closing and the valve 19 in line 12 opening. Here, the fluff from the plates 4 are rinsed off and get into the collecting container 14 or lines 15 and 151 are pumped into the collecting container 17 via the pump lines.
Die Düsen in der Sprüheinrichtung 10 können jede gewünschte und zweckdienliche Form besitzen. Auch kann die Sprüheinrichtung aus mehreren Leisten, Rohren oder dergleichen bestehen, die rechts oder links am Gehäuse 1 angebracht sind. Es be steht aber auch die Möglichkeit, die Sprüheinrichtung aus einzelnen Rohren oder Leisten zu bilden, die innerhalb der Kanäle 6 verlaufen. Fernerhin besteht die Mög lichkeit, an einer zweckgünstigen Stelle, z. B. zwischen Rinne und Auffangbehälter ein Flusensieb anzuordnen, welches gelegentlich entnommen und gereinigt werden kann. Indessen wird durch eine Flusenfalle die Erfindung nicht überflüssig. Flusen sind oft sehr klein und geraten durch die üblichen Filter, so daß durch eine Flusen falle das Problem nicht gelöst werden kann. Zum Reinigen der Platten ist - wie schon ausgeführt - nur eine geringe Menge Wasser etwa ½ Liter erforderlich, wo bei bei einem handelsüblichen Haushalts-Wäschetrockner zum Abspülen der Platten eine Zeit von etwa 30 Sekunden benötigt wird.The nozzles in the spray device 10 can have any desired and useful shape. The spray device can also consist of several strips, pipes or the like, which are attached to the right or left of the housing 1 . However, there is also the possibility of forming the spraying device from individual tubes or strips that run within the channels 6 . Furthermore, there is the possibility, at a convenient location, for. B. to arrange a fluff filter between the gutter and the collecting container, which can be removed and cleaned occasionally. However, a fluff trap does not make the invention superfluous. Lint is often very small and gets through the usual filters, so that the problem cannot be solved with a lint. To clean the plates, as already mentioned, only a small amount of water is required, about ½ liter, which takes about 30 seconds to rinse off the plates of a commercial household dryer.
Gemäß der gestrichelten Darstellung in Fig. 3 kann die Spülvorrichtung 10 anstelle über die Speiseleitung 12 über eine Sammelbehälter-Abflußleitung 21 und ein elek trisch steuerbares Ventil 22 gespeist werden. Die erforderliche Spülwassermenge kann in Abhängigkeit von der Einschaltdauer des Ventils 22 oder vom Niveau im Auffangbehälter 14 begrenzt werden. Dabei kann je nach Bedarf die Pumpe 16 ange halten werden oder weiter fördern.According to the broken line in FIG. 3, the flushing device 10 can be fed instead of via the feed line 12 via a collecting container drain line 21 and an electrically controllable valve 22 . The amount of flushing water required can be limited depending on the on-time of the valve 22 or on the level in the collecting container 14 . The pump 16 can be stopped or further promoted as required.
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3738031A DE3738031C2 (en) | 1987-11-09 | 1987-11-09 | Method and device for removing lint from a condensate separator designed as a heat exchanger |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3738031A DE3738031C2 (en) | 1987-11-09 | 1987-11-09 | Method and device for removing lint from a condensate separator designed as a heat exchanger |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3738031A1 true DE3738031A1 (en) | 1989-05-18 |
DE3738031C2 DE3738031C2 (en) | 1995-10-12 |
Family
ID=6340131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3738031A Expired - Lifetime DE3738031C2 (en) | 1987-11-09 | 1987-11-09 | Method and device for removing lint from a condensate separator designed as a heat exchanger |
Country Status (1)
Country | Link |
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DE (1) | DE3738031C2 (en) |
Cited By (76)
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DE3929003A1 (en) * | 1989-09-01 | 1991-03-07 | Behr Gmbh & Co | Heat exchanger for washing dryers - with parallel layers on flow duct alternatingly supplied with cooling air and process air |
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EP0477554A1 (en) * | 1990-09-24 | 1992-04-01 | Bosch-Siemens HausgerÀ¤te GmbH | Household laundry drier with a condenser |
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WO1993017169A1 (en) * | 1992-02-25 | 1993-09-02 | Antonio Merloni S.P.A. | Water-saving device for washing-drying machines |
DE4333901C1 (en) * | 1993-10-05 | 1995-02-09 | Bauknecht Hausgeraete | Laundry drier |
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EP1055767A1 (en) * | 1999-04-30 | 2000-11-29 | BSH Bosch und Siemens Hausgeräte GmbH | Method for cleaning the process air ducts in a laundry drier and a laundry drier using this method |
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