EP2238287A1 - Exhaust air dryer having fan - Google Patents

Exhaust air dryer having fan

Info

Publication number
EP2238287A1
EP2238287A1 EP08870685A EP08870685A EP2238287A1 EP 2238287 A1 EP2238287 A1 EP 2238287A1 EP 08870685 A EP08870685 A EP 08870685A EP 08870685 A EP08870685 A EP 08870685A EP 2238287 A1 EP2238287 A1 EP 2238287A1
Authority
EP
European Patent Office
Prior art keywords
exhaust air
exhaust
dryer
air
supply air
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
Application number
EP08870685A
Other languages
German (de)
French (fr)
Other versions
EP2238287B1 (en
Inventor
Thomas Nawrot
Andreas Ziemann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to PL08870685T priority Critical patent/PL2238287T3/en
Publication of EP2238287A1 publication Critical patent/EP2238287A1/en
Application granted granted Critical
Publication of EP2238287B1 publication Critical patent/EP2238287B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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 
    • 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
    • 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
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis

Definitions

  • the invention relates to an exhaust air dryer with an interior bounding housing, wherein disposed in the interior of a drying chamber for objects to be dried, a supply air duct between a first Zu Kunststoffeingang and the drying chamber for supply air, a heater for heating the supply air in the supply air duct, a fan, with which the heated supply air can be guided through the drying chamber, and an exhaust air duct between the drying chamber and an exhaust air outlet on the housing for exhaust air.
  • a tumble dryer In general, a tumble dryer is designed and operated as an exhaust or condensation dryer.
  • An exhaust air dryer generates warm process air, which is blown to absorb moisture through the laundry to be dried and then discharged from the tumble dryer.
  • a corresponding exhaust hose In any case, when the exhaust air dryer is installed within a building, a corresponding exhaust hose must be used for discharging, through which the process air laden with moisture is led out of the building - be it directly or through a permanently installed exhaust air duct.
  • a condensation dryer whose operation is based on the condensation of moisture evaporated by means of warm process air from the laundry requires no exhaust hose and allows energy recovery from the heated process air, for example by using a heat pump.
  • an exhaust air dryer with heat recovery known.
  • this ambient air flows (of eg 20 ° C and 60% relative humidity, so-called supply air) along heat exchanger surfaces of an air-air heat exchanger and is heated there by cooling the coming out of the drying chamber warm process air, which also flows through the heat exchanger.
  • supply air e.g 20 ° C and 60% relative humidity, so-called supply air
  • the Heat exchange creates condensate which is collected or pumped away in a container (condensate tray).
  • known dryer In this known dryer, a fan for conveying the process air (supply air and exhaust air) is used.
  • known dryers generally have only one motor, which drives both the rotary drying chamber (washing drum) and the fan.
  • An object of the present invention is therefore to provide an exhaust air dryer with high energy efficiency, which can be operated with only one motor.
  • this dryer should allow to use a longer exhaust duct and exploit the waste heat generated in the dryer.
  • the invention thus relates to an exhaust air dryer with a housing bounding a housing, wherein are arranged in the interior of a Drying chamber for objects to be dried, a Zu povertykanal between a first Zu povertyeingang and the drying chamber for supply air, a heater for heating the supply air in the supply air duct, a fan, with which the heated supply air can be guided through the drying chamber, and an exhaust duct between the drying chamber and a Exhaust air outlet on the housing for exhaust air, wherein the fan is a double-flow fan with a first flood and a second flood, wherein the first flood in the exhaust duct and the second flood is arranged in the supply air duct.
  • the two floods are sealed against each other, so separated from each other in terms of flow.
  • the drying chamber is rotatable, in particular according to conventional practice for tumble dryer designed as a drum, and drivable by a motor, wherein the first air inlet inlet for sucking in air from an environment of the engine is arranged.
  • a thermally loaded component of the exhaust air dryer here the engine, cooling provided by the first air inlet is placed so that when sucking air into the first air inlet an air flow is formed, which flows past the loaded component and excess heat, the was taken from such air, dissipates the charged component.
  • the exhaust air dryer according to the invention in which the motor is arranged both for driving the drying chamber and for driving the fan.
  • the motor is arranged both for driving the drying chamber and for driving the fan.
  • the engine waste heat is used and thus not only achieved energy savings, but also a protection of the engine. Due to the active cooling of the motor this can be made smaller in terms of laminated core and winding. It is possible to use a relatively short, inexpensive shaft journal on one side of a motor for driving the fan.
  • it is advantageous that the design of the interior and of the air paths in the region of the engine and / or optionally of another component enables effective removal of the waste heat from the engine or from the other component.
  • the flow rate of the two floods in the twin-flow fan of the exhaust air dryer according to the invention can vary within wide ranges.
  • the first flood and the second flood each have a flow rate of 50 m 3 / h to 500 m 3 / h.
  • the heating in the supply air duct for heating the supply air may preferably be an electric heating (electrical resistance heating) or a gas heating. Since, as the degree of drying of the objects to be dried in the exhaust air dryer decreases, the energy required for drying decreases, the heating is appropriately regulated, that is to say in accordance with the invention. As the degree of drying progresses, its heat output is reduced.
  • a heat exchanger is provided, in which a heat exchange between the supply air duct and the exhaust duct can take place.
  • the warm air from the drying chamber is used for heating the process air.
  • a heat exchange between the first and / or the second sub-channel and the exhaust air channel can preferably take place in the heat exchanger.
  • a particularly preferred embodiment of the exhaust air dryer according to the invention is characterized in that in the supply air duct, a flow controller, in particular a controllable flap or a controllable valve, is arranged.
  • a flow controller in particular a controllable flap or a controllable valve
  • Such a flow regulator in the exhaust air dryer according to the invention can be designed differently, as long as it can regulate a control of the flow of process air.
  • the flow regulator is a flap or a valve.
  • This flow regulator can regulate the air passage in various ways. The type of control can depend on the arrangement and structure of the flow controller.
  • the flow regulator can regulate only one air passage through the supply air duct, in particular so far that the contribution of the second flood of the blower to the delivery capacity is canceled.
  • the flow regulator can simultaneously release a second supply air inlet and thus in particular offer an increased range of control.
  • the exhaust air dryer according to the invention of any design has the advantage of being very energy efficient and also to allow faster drying of laundry items.
  • the latter applies because the invention allows an increase of the air flow through the exhaust air dryer.
  • the increase of the air flow in turn allows an increase in the heating power to be applied, thus further accelerating the drying process is possible.
  • the use of a cross-flow heat exchanger for a further increase in energy efficiency is possible.
  • Figure 1 is a sketch of an embodiment of a vented dryer
  • Figure 2 is a sketch of another embodiment of a vented dryer;
  • Figure 3 shows an embodiment of a double-flow fan;
  • FIG. 1 shows a vertical section through an exhaust air dryer 1 as a sketch.
  • a housing 2 circumscribes an interior 3 of the exhaust air dryer 1, in which interior 3 a control device 4 is arranged, which serves both to receive control commands from a user and to operate and control the functional components of the exhaust air dryer 1, in particular those components, which are mentioned below. Means by which the user receives information from the control device 4 and gives the control device 4 corresponding control commands are not shown for the sake of clarity.
  • a supply air duct 7 is provided in which air is sucked in through a first supply air inlet 8 and supplied to the drum 6 for drying the moist objects.
  • the first Zu Kunststoffeingang opens in the interior 3, so that it can be sucked through him, which was preheated by the release of heat from the functional components of the exhaust dryer 1, air.
  • a housing 2 as shown here is usually not carried out sealingly against the environment of the exhaust dryer 1; such would not be necessary or useful for the function of the exhaust air dryer 1 in any way. Rather, there are in the housing a plurality of columns or slots 9, which are symbolically represented here by arrows 9 and through which air from the environment of the exhaust air dryer 1 can get into it without significant hindrance.
  • a heater 10, executable known as electric heater 10 or gas heater 10 is disposed in the supply air duct 7, as well as a blower 11 to promote the supply air.
  • the now laden with moisture air which is now called “exhaust” passes through an exhaust duct 12 and a lint filter 13 for catching entrained lint (which are to be understood small fiber particles, which separates the air flow from the objects to be dried)
  • the exhaust air outlet 14 can not simply be left open when the exhaust air dryer 1 is installed inside a building, but rather a hose or the like must be connected with which the moisture laden one Exhaust air can be led out directly from the building.
  • the blower 11 is designed as a double-flow blower 1 1, which means that it combines two independent partial blower or floods 15 and 16 in itself.
  • a first flood 15 is disposed in the exhaust duct 12, a second flood 16, however, in the supply air duct 6.
  • the two floods 15 and 16 work in series and jointly promote the air flow of supply air or exhaust air through the Exhaust air dryer 1.
  • This exhaust air dryer 1 therefore has the advantage of being very energy efficient and also allowing faster drying of laundry items.
  • the latter applies because the twin-flow fan 11 allows an increase of the air flow through the exhaust air dryer 1.
  • the increase of the air flow in turn allows an increase of the heating power to be applied by the heater 8, whereby a further acceleration of the drying process is possible.
  • the two floods 15 and 16 of the blower 1 1 are driven by a motor 17, which also rotates the drum 6. This rotation is done via a connected to the motor 17 pulley 18 and here indicated by a dashed arrow, around the drum 6 and the pulley 18 looped endless belt 19th
  • the heat exchanger 20 is part of both the supply air duct 7 and the exhaust duct 12; it allows a transfer of heat from the exhaust air to the supply air, according to a recovery of heat energy that would otherwise be dissipated with the exhaust air from the exhaust air dryer 1. It should be noted that the thus caused cooling of the exhaust air can lead to condensed out of this moisture. If necessary, take precautions to collect and dispose of this condensed moisture; to appropriate measures in a condensation dryer of known design, which are readily transferable to the exhaust dryer 1 shown here, it should be noted.
  • FIG. 2 shows parts of a comparison with the embodiment of Figure 1 modified embodiment of a vented dryer 1.
  • the change is that the supply air duct 7 is supplemented between the second flood 16 and the heat exchanger 20 to a flow controller 21 in the form of a movable flap 21.
  • a flap 21 By this flap 21, the influence of the second flood 16 on the incoming air flowing in the supply air 7 can be completely or partially canceled.
  • This allows regulation of the air flow.
  • an increased temperature in the air flow after passing through the heater 8 can be effected, which may be of importance for the purpose of accelerated heating or even drying of the moist objects in the drying chamber 6.
  • the flow regulator 21 is designed such that it releases a second inlet inlet 22 as it closes off the part of the supply air channel 7 with the second flow 16. This ensures that, regardless of the position of the flow controller 21 always a certain flow of supply air possible and overheating of the heater 8 is excluded.
  • FIG 3 In the figure 3 is a double-flow blower 1 1, designed as a radial fan 11 and driven by the motor 17, is shown.
  • the floods 15 and 16 are sealed against each other.
  • a single impeller 23 is present, each flood 15 or 16 is one half of this impeller 23.
  • Figures 4 and 5 show an oblique view and a side view of a vented dryer 1 to illustrate the geometric relationships in which presently 1 benefits are achieved by the application of a double-flow blower.
  • the interior 3 in the housing 2 most consuming component of the exhaust dryer 2 is the drum 6, which can not be reduced in terms of development of space for other components. If you want a better fan effect, so is the space for an enlargement of the blower 1 1, which is according to conventional practice obliquely below the drum 6, limited.
  • this problem is solved advantageous, and created a vented dryer 1 with improved throughput of supply air and exhaust air. LIST OF REFERENCE NUMBERS

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

The invention relates to an exhaust air dryer (1) having a housing (2) enclosing an inner space (3), wherein a drying chamber (6) for items to be dried, a supply air duct (7) between a first supply air inlet (8) and the drying chamber (6) for supply air, a heater (10) for heating the supply air in the supply air duct (7), a fan (11) with which the heated supply air can be guided through the drying chamber (6), and an exhaust air duct (12) between the drying chamber (6) and an exhaust air outlet (14) on the housing (2) for exhaust air are arranged in the inner space (3). The fan (11) is a dual-pipe fan (11) having a first pipe (15) and a second pipe (16), wherein the first pipe (15) is arranged in the exhaust air duct (12) and the second pipe (16) in the supply air duct (7).

Description

Ablufttrockner mit einem Gebläse Exhaust air dryer with a blower
Die Erfindung betrifft einen Ablufttrockner mit einem einen Innenraum umgrenzenden Gehäuse, wobei in dem Innenraum angeordnet sind eine Trocknungskammer für zu trocknende Gegenstände, ein Zuluftkanal zwischen einem ersten Zulufteingang und der Trocknungskammer für Zuluft, eine Heizung zur Erwärmung der Zuluft in dem Zuluftkanal, ein Gebläse, mit welchem die erwärmte Zuluft durch die Trocknungskammer führbar ist, und ein Abluftkanal zwischen der Trocknungskammer und einem Abluftausgang am Gehäuse für Abluft.The invention relates to an exhaust air dryer with an interior bounding housing, wherein disposed in the interior of a drying chamber for objects to be dried, a supply air duct between a first Zulufteingang and the drying chamber for supply air, a heater for heating the supply air in the supply air duct, a fan, with which the heated supply air can be guided through the drying chamber, and an exhaust air duct between the drying chamber and an exhaust air outlet on the housing for exhaust air.
Ein solcher Ablufttrockner geht hervor aus der DE 30 00 865 A1.Such a vented dryer is apparent from DE 30 00 865 A1.
Im Allgemeinen wird ein Wäschetrockner als Abluft- oder Kondensationstrockner ausgelegt und betrieben. Ein Ablufttrockner erzeugt warme Prozessluft, welche zum Aufnehmen von Feuchtigkeit durch die zu trocknende Wäsche geblasen und anschließend aus dem Wäschetrockner abgeführt wird. Jedenfalls dann, wenn der Ablufttrockner innerhalb eines Gebäudes aufgestellt ist, muss zum Abführen ein entsprechender Abluftschlauch benutzt werden, durch den die mit Feuchtigkeit beladene Prozessluft aus dem Gebäude herausgeführt wird - sei es unmittelbar oder sei es über eine fest installierte Abluftführung. Ein Kondensationstrockner, dessen Funktionsweise auf der Kondensation der mittels warmer Prozessluft verdampften Feuchtigkeit aus der Wäsche beruht, benötigt keinen Abluftschlauch und ermöglicht eine Energierückgewinnung aus der erwärmten Prozessluft, beispielsweise durch Verwendung einer Wärmepumpe.In general, a tumble dryer is designed and operated as an exhaust or condensation dryer. An exhaust air dryer generates warm process air, which is blown to absorb moisture through the laundry to be dried and then discharged from the tumble dryer. In any case, when the exhaust air dryer is installed within a building, a corresponding exhaust hose must be used for discharging, through which the process air laden with moisture is led out of the building - be it directly or through a permanently installed exhaust air duct. A condensation dryer whose operation is based on the condensation of moisture evaporated by means of warm process air from the laundry requires no exhaust hose and allows energy recovery from the heated process air, for example by using a heat pump.
Bei einem Ablufttrockner wird dagegen im Allgemeinen die nach dem Durchgang durch eine Wäschetrommel mit Feuchtigkeit beladene Luft aus dem Trockner geleitet, wobei eine Wärmerückgewinnung nicht stattfindet. Allerdings ist aus der DE 30 00 865 A1 ein Ablufttrockner mit Wärmerückgewinnung bekannt. Bei diesem strömt Umgebungsluft (von z.B. 20°C und 60% relativer Luftfeuchte; sogenannte Zuluft) entlang von Wärmetauscherflächen eines Luft-Luft-Wärmetauschers und wird dort unter Abkühlung der aus der Trocknungskammer kommenden warmen Prozessluft, die ebenfalls den Wärmetauscher durchfließt, aufgeheizt. Abhängig von der Kühlleistung bzw. dem Wärmetausch entsteht Kondensat, das in einem Behälter (Kondensatwanne) gesammelt oder abgepumpt wird.On the other hand, in an exhaust air dryer, the air laden with moisture after passage through a laundry drum is generally discharged from the dryer, and heat recovery does not take place. However, from DE 30 00 865 A1 an exhaust air dryer with heat recovery known. In this ambient air flows (of eg 20 ° C and 60% relative humidity, so-called supply air) along heat exchanger surfaces of an air-air heat exchanger and is heated there by cooling the coming out of the drying chamber warm process air, which also flows through the heat exchanger. Depending on the cooling capacity or the Heat exchange creates condensate which is collected or pumped away in a container (condensate tray).
In diesem bekannten Trockner wird ein Gebläse zur Beförderung der Prozessluft (Zuluft und Abluft) eingesetzt. Zudem weisen bekannte Trockner im Allgemeinen nur einen Motor auf, der sowohl die drehbare Trocknungskammer (Wäschetrommel) als auch das Gebläse antreibt.In this known dryer, a fan for conveying the process air (supply air and exhaust air) is used. In addition, known dryers generally have only one motor, which drives both the rotary drying chamber (washing drum) and the fan.
Schließlich sind Vorrichtungen in Trocknern bekannt, welche die Führung der Prozessluft beeinflussen sollen. In der DE 43 06 217 B4 ist ein programmgesteuerter Wäschetrockner beschrieben, bei dem die Prozessluft mittels eines Gebläses in einem geschlossenen Prozessluftkanal geführt wird, in dem sich besonders angeordnete Verschlusseinrichtungen befinden. In Abhängigkeit vom Betriebszustand (Aufheizphase, Wäschetrocknungsphase, Erreichen der maximal zulässigen Temperatur) werden die Verschlusseinrichtungen geeignet betätigt.Finally, devices in dryers are known which are intended to influence the guidance of the process air. In DE 43 06 217 B4 a program-controlled laundry dryer is described in which the process air is guided by means of a blower in a closed process air duct, in which are particularly arranged closure devices. Depending on the operating state (heating phase, laundry drying phase, reaching the maximum permissible temperature), the closure devices are actuated suitably.
Bei einem Ablufttrockner ist es häufig erwünscht, eine möglichst lange Abluftleitung oder einen möglichst langen Abluftschlauch verwenden zu können, um hinsichtlich der Aufstellung des Trockners, bei dem die Abluft nicht in das Innere eines Aufstellungsraums abgegeben werden soll, mehr Flexibilität zu haben.In a vented dryer, it is often desirable to be able to use the longest possible exhaust duct or the longest possible exhaust hose to have more flexibility with regard to the installation of the dryer, in which the exhaust air is not discharged into the interior of a room.
Eine Aufgabe der vorliegenden Erfindung ist es daher, einen Ablufttrockner mit hoher Energieeffizienz bereitzustellen, der mit nur einem Motor betrieben werden kann. Vorzugsweise soll dieser Trockner ermöglichen, eine längere Abluftleitung zu verwenden und die im Trockner anfallende Abwärme auszunutzen.An object of the present invention is therefore to provide an exhaust air dryer with high energy efficiency, which can be operated with only one motor. Preferably, this dryer should allow to use a longer exhaust duct and exploit the waste heat generated in the dryer.
Die Lösung dieser Aufgabe wird nach dieser Erfindung erreicht durch einen Ablufttrockner mit den Merkmalen des unabhängigen Patentanspruchs.The solution to this problem is achieved by this invention by a vented dryer with the features of the independent claim.
Bevorzugte Ausführungsformen des erfindungsgemäßen Ablufttrockners sind in entsprechenden abhängigen Patentansprüchen aufgeführt.Preferred embodiments of the exhaust air dryer according to the invention are listed in corresponding dependent claims.
Gegenstand der Erfindung ist somit ein Ablufttrockner mit einem einen Innenraum umgrenzenden Gehäuse, wobei in dem Innenraum angeordnet sind eine Trocknungskammer für zu trocknende Gegenstände, ein Zuluftkanal zwischen einem ersten Zulufteingang und der Trocknungskammer für Zuluft, eine Heizung zur Erwärmung der Zuluft in dem Zuluftkanal, ein Gebläse, mit welchem die erwärmte Zuluft durch die Trocknungskammer führbar ist, und ein Abluftkanal zwischen der Trocknungskammer und einem Abluftausgang am Gehäuse für Abluft, wobei das Gebläse ein zweiflutiges Gebläse mit einer ersten Flut und einer zweiten Flut ist, wobei die erste Flut im Abluftkanal und die zweite Flut im Zuluftkanal angeordnet ist.The invention thus relates to an exhaust air dryer with a housing bounding a housing, wherein are arranged in the interior of a Drying chamber for objects to be dried, a Zuluftkanal between a first Zulufteingang and the drying chamber for supply air, a heater for heating the supply air in the supply air duct, a fan, with which the heated supply air can be guided through the drying chamber, and an exhaust duct between the drying chamber and a Exhaust air outlet on the housing for exhaust air, wherein the fan is a double-flow fan with a first flood and a second flood, wherein the first flood in the exhaust duct and the second flood is arranged in the supply air duct.
Hierbei sind die beiden Fluten gegeneinander abgedichtet, also strömungsmäßig voneinander getrennt.Here, the two floods are sealed against each other, so separated from each other in terms of flow.
Erfindungsgemäß kann Luft aus dem Innenraum des Ablufttrockners, welche durch Abwärme verschiedener Komponenten des Ablufttrockners erwärmt ist, für den Trocknungsprozess im Ablufttrockner nutzbar gemacht. So können ein Verlust an nutzbarer Wärme aus dem Ablufttrockner vermieden und damit die Effektivität des Trocknungsprozesses gesteigert werden. In ein bevorzugten Ausführungsform der Erfindung ist die Trocknungskammer drehbar, insbesondere entsprechend herkömmlicher Praxis für Wäschetrockner als Trommel ausgeführt, und von einem Motor antreibbar, wobei der erste Zulufteingang zum Einsaugen von Luft aus einer Umgebung des Motors angeordnet ist. So wird einer thermisch belasteten Komponente des Ablufttrockners, hier dem Motor, Kühlung verschafft, indem der erste Zulufteingang derart gelegt wird, dass beim Einsaugen von Luft in den ersten Zulufteingang ein Luftstrom gebildet wird, der an der belasteten Komponente vorbei fließt und überschüssige Wärme, die von solcher Luft aufgenommen wurde, von der belasteten Komponente abführt.According to the invention, air from the interior of the exhaust air dryer, which is heated by waste heat of various components of the exhaust air dryer, made available for the drying process in the exhaust air dryer. In this way, a loss of usable heat from the exhaust air dryer can be avoided and thus the effectiveness of the drying process can be increased. In a preferred embodiment of the invention, the drying chamber is rotatable, in particular according to conventional practice for tumble dryer designed as a drum, and drivable by a motor, wherein the first air inlet inlet for sucking in air from an environment of the engine is arranged. Thus, a thermally loaded component of the exhaust air dryer, here the engine, cooling provided by the first air inlet is placed so that when sucking air into the first air inlet an air flow is formed, which flows past the loaded component and excess heat, the was taken from such air, dissipates the charged component.
Weiter bevorzugt ist eine Ausführungsform des erfindungsgemäßen Ablufttrockners, bei der der Motor eingerichtet ist sowohl zum Antreiben der Trocknungskammer als auch zum Antreiben des Gebläses. Damit ist weiterhin die Verwendung eines einzigen Motors für den Antrieb von Trocknungskammer und Gebläse möglich. Zudem wird die Motorabwärme genutzt und damit nicht nur eine Energieeinsparung erreicht, sondern auch eine Schonung des Motors. Durch die aktive Kühlung des Motors kann dieser bezüglich Blechpaket und Wicklung kleiner ausgelegt werden. Es ist möglich, einen relativ kurzen, kostengünstigen Wellenzapfen auf einer Seite eines Motors zum Antreiben des Gebläses zu verwenden. Bei allen Ausführungsformen ist es vorteilhaft, dass die Ausgestaltung des Innenraums sowie der Luftwege im Bereich des Motors und/oder ggf. einer anderen Komponente einen wirksamen Abtransport der Abwärme vom Motor oder von der andere Komponente ermöglicht.Further preferred is an embodiment of the exhaust air dryer according to the invention, in which the motor is arranged both for driving the drying chamber and for driving the fan. Thus, the use of a single motor for driving the drying chamber and blower is still possible. In addition, the engine waste heat is used and thus not only achieved energy savings, but also a protection of the engine. Due to the active cooling of the motor this can be made smaller in terms of laminated core and winding. It is possible to use a relatively short, inexpensive shaft journal on one side of a motor for driving the fan. In all embodiments, it is advantageous that the design of the interior and of the air paths in the region of the engine and / or optionally of another component enables effective removal of the waste heat from the engine or from the other component.
Die Durchflussleistung der beiden Fluten im zweiflutigen Gebläse des erfindungsgemäßen Ablufttrockners kann in weiten Bereichen variieren. Vorzugsweise weisen die erste Flut und die zweite Flut jeweils eine Durchflussleistung von 50 m3/h bis 500 m3/h auf.The flow rate of the two floods in the twin-flow fan of the exhaust air dryer according to the invention can vary within wide ranges. Preferably, the first flood and the second flood each have a flow rate of 50 m 3 / h to 500 m 3 / h.
Bei der Heizung im Zuluftkanal zur Erwärmung der Zuluft (Prozessluft) kann es sich vorzugsweise um eine Elektroheizung (elektrische Widerstandsheizung) oder eine Gasheizung handeln. Da mit fortschreitendem Trocknungsgrad der im Ablufttrockner zu trocknenden Gegenstände die zum Trocknen erforderliche Energie abnimmt, wird zweckmäßig die Heizung entsprechend geregelt, d.h. mit fortschreitendem Trocknungsgrad deren Heizleistung vermindert.The heating in the supply air duct for heating the supply air (process air) may preferably be an electric heating (electrical resistance heating) or a gas heating. Since, as the degree of drying of the objects to be dried in the exhaust air dryer decreases, the energy required for drying decreases, the heating is appropriately regulated, that is to say in accordance with the invention. As the degree of drying progresses, its heat output is reduced.
Im erfindungsgemäßen Ablufttrockner ist es bevorzugt, dass ein Wärmetauscher vorhanden ist, in dem ein Wärmeaustausch zwischen dem Zuluftkanal und dem Abluftkanal stattfinden kann. Hier wird für die Erwärmung der Prozessluft die warme Luft aus der Trocknungskammer verwendet. Hierbei kann vorzugsweise im Wärmetauscher ein Wärmetausch zwischen dem ersten und/oder dem zweiten Teilkanal und dem Abluftkanal stattfinden.In the exhaust air dryer according to the invention, it is preferred that a heat exchanger is provided, in which a heat exchange between the supply air duct and the exhaust duct can take place. Here, the warm air from the drying chamber is used for heating the process air. In this case, a heat exchange between the first and / or the second sub-channel and the exhaust air channel can preferably take place in the heat exchanger.
Bei Verwendung eines Wärmetauschers kreuzen sich im Allgemeinen der Zuluftkanal und der die warme Luft aus der Trocknungskammer aufweisende Abluftkanal oder die Wärmequelle der Wärmepumpe.When using a heat exchanger to cross the supply air duct and the warm air from the drying chamber having exhaust duct or the heat source of the heat pump in general.
Eine besonders bevorzugte Ausführungsform des erfindungsgemäßen Ablufttrockners zeichnet sich dadurch aus, dass in dem Zuluftkanal ein Durchflussregler, insbesondere eine steuerbare Klappe oder ein steuerbares Ventil, angeordnet ist. Ein solcher Durchflussregler im erfindungsgemäßen Ablufttrockner kann verschieden ausgestaltet sein, solange er eine Regelung des Durchflusses von Prozessluft regeln kann. Vorzugsweise ist der Durchflussregler eine Klappe oder ein Ventil. Dieser Durchflussregler kann den Luftdurchgang auf verschiedene Weise regeln. Art und Weise der Regelung können von Anordnung und Aufbau des Durchflussreglers abhängen. So kann der Durchflussregler nur einen Luftdurchgang durch Zuluftkanal regeln, insbesondere so weit, dass der Beitrag der zweiten Flut des Gebläses zur Förderleistung aufgehoben wird. Damit kann, ggf. im Zusammenspiel mit einer entsprechenden Regelung der Heizung, insbesondere das Temperaturniveau der aufgeheizten Zuluft beeinflusst und insbesondere eine schnellere Aufheizung der zu trocknenden Gegenstände in der Trocknungskammer erreicht werden. Alternativ oder in Ergänzung hierzu kann der Durchflussregler gleichzeitig einen zweiten Zulufteingang freigeben und so insbesondere einen vergrößerten Regelumfang bieten. Die flexible Ausnutzung der Abwärme eines im Ablufttrockner vorhandenen Motors oder einer weiteren Komponente über eine mittels des Durchflussreglers steuerbare Zuluftzufuhr aus dem Innenraum ermöglicht, dass ein Prozessluftstrom durch den Ablufttrockner erst bei Erreichen einer vorgegebenen Temperatur erhöht wird. Die Erfindung ermöglicht hierbei eine kostengünstige Regelung des Prozessluftstroms durch den Ablufttrockner.A particularly preferred embodiment of the exhaust air dryer according to the invention is characterized in that in the supply air duct, a flow controller, in particular a controllable flap or a controllable valve, is arranged. Such a flow regulator in the exhaust air dryer according to the invention can be designed differently, as long as it can regulate a control of the flow of process air. Preferably, the flow regulator is a flap or a valve. This flow regulator can regulate the air passage in various ways. The type of control can depend on the arrangement and structure of the flow controller. Thus, the flow regulator can regulate only one air passage through the supply air duct, in particular so far that the contribution of the second flood of the blower to the delivery capacity is canceled. This can, if appropriate, in conjunction with a corresponding control of the heater, in particular the temperature level of the heated supply air influenced and in particular a faster heating of the objects to be dried in the drying chamber can be achieved. Alternatively or in addition thereto, the flow regulator can simultaneously release a second supply air inlet and thus in particular offer an increased range of control. The flexible utilization of the waste heat of a present in the exhaust air dryer engine or another component via a controllable by means of the flow control supply air from the interior allows a process air flow is increased by the exhaust air dryer until it reaches a predetermined temperature. The invention enables a cost-effective control of the process air flow through the exhaust air dryer.
Der erfindungsgemäße Ablufttrockner jedweder Ausgestaltung hat den Vorteil, sehr energieeffizient zu sein und außerdem ein rascheres Trocknen von Wäschestücken zu ermöglichen. Letzteres gilt deshalb, weil die Erfindung eine Steigerung des Luftstroms durch den Ablufttrockner gestattet. Die Steigerung des Luftstroms wiederum gestattet eine Steigerung der aufzubringenden Heizleistung, womit eine weitere Beschleunigung des Trocknungsprozesses möglich ist. Außerdem ist es gut möglich, zusätzliche Maßnahmen zur wenigstens teilweisen Rückgewinnung der im Trocknungsprozess aufgewendeten Wärmeenergie zu treffen. Insbesondere ist die Verwendung eines Kreuzstromwärmetauschers zu einer weiteren Steigerung der Energieeffizienz möglich.The exhaust air dryer according to the invention of any design has the advantage of being very energy efficient and also to allow faster drying of laundry items. The latter applies because the invention allows an increase of the air flow through the exhaust air dryer. The increase of the air flow in turn allows an increase in the heating power to be applied, thus further accelerating the drying process is possible. In addition, it is well possible to take additional measures for at least partial recovery of the heat energy spent in the drying process. In particular, the use of a cross-flow heat exchanger for a further increase in energy efficiency is possible.
Ausführungsbeispiele der Erfindung ergeben sich unter Bezugnahme auf die Figuren der Zeichnung aus der nachfolgenden Beschreibung. Es zeigen:Embodiments of the invention will become apparent with reference to the figures of the drawing from the following description. Show it:
Figur 1 eine Skizze einer Ausführungsform eines Ablufttrockners;Figure 1 is a sketch of an embodiment of a vented dryer;
Figur 2 eine Skizze einer anderen Ausführungsform eines Ablufttrockners; Figur 3 ein Ausführungsbeispiel für ein zweiflutiges Gebläse;Figure 2 is a sketch of another embodiment of a vented dryer; Figure 3 shows an embodiment of a double-flow fan;
Figur 4 eine Schrägansicht, und Figur 5 eine Seitenansicht einer weiteren Ausführungsform eines Ablufttrockners. Figur 1 zeigt einen Vertikalschnitt durch einen Ablufttrockner 1 als Skizze. Ein Gehäuse 2 umgrenzt einen Innenraum 3 des Ablufttrockners 1 , in welchem Innenraum 3 unter anderem angeordnet ist eine Steuereinrichtung 4, welche sowohl der Entgegennahme von Steuerbefehlen einer Benutzerperson als auch dem Betrieb und der Steuerung der funktionellen Komponenten des Ablufttrockners 1 dient, insbesondere derjenigen Komponenten, die nachfolgend erwähnt sind. Mittel, über die die Benutzerperson von der Steuereinrichtung 4 Information erhält und der Steuereinrichtung 4 entsprechende Steuerbefehle erteilt, sind der Übersicht halber nicht dargestellt. Weiter im Gehäuse 2 angeordnet ist eine um eine Achse 5 drehbare Trocknungskammer oder Trommel 6, in welche die zu trocknenden, feuchten Gegenstände eingebracht werden müssen. Ein Zuluftkanal 7 ist vorgesehen, in welchen durch einen ersten Zulufteingang 8 Luft eingesaugt und zum Trocknen der feuchten Gegenstände der Trommel 6 zugeführt wird. Der erste Zulufteingang öffnet sich in den Innenraum 3, so dass durch ihn Luft, die durch Abgabe von Wärme von den funktionellen Komponenten des Ablufttrockners 1 vorgewärmt wurde, eingesaugt werden kann. Ein Gehäuse 2 wie das hier dargestellte wird üblicherweise nicht dichtend gegen die Umgebung des Ablufttrockners 1 ausgeführt; solches wäre für die Funktion des Ablufttrockners 1 auch in keiner Weise erforderlich oder nützlich. Vielmehr gibt es in dem Gehäuse eine Vielzahl von Spalten oder Schlitzen 9, die hier symbolisch durch Pfeile 9 dargestellt sind und durch welche Luft aus der Umgebung des Ablufttrockners 1 ohne wesentliche Behinderung in diesen hinein gelangen kann. Eine Heizung 10, ausführbar bekanntermaßen als Elektroheizung 10 oder Gasheizung 10, ist im Zuluftkanal 7 angeordnet, ebenso ein Gebläse 11 zur Förderung der Zuluft.Figure 4 is an oblique view, and Figure 5 is a side view of another embodiment of a vented dryer. FIG. 1 shows a vertical section through an exhaust air dryer 1 as a sketch. A housing 2 circumscribes an interior 3 of the exhaust air dryer 1, in which interior 3 a control device 4 is arranged, which serves both to receive control commands from a user and to operate and control the functional components of the exhaust air dryer 1, in particular those components, which are mentioned below. Means by which the user receives information from the control device 4 and gives the control device 4 corresponding control commands are not shown for the sake of clarity. Next arranged in the housing 2 is a rotatable about an axis 5 drying chamber or drum 6, in which the wet objects to be dried must be introduced. A supply air duct 7 is provided in which air is sucked in through a first supply air inlet 8 and supplied to the drum 6 for drying the moist objects. The first Zulufteingang opens in the interior 3, so that it can be sucked through him, which was preheated by the release of heat from the functional components of the exhaust dryer 1, air. A housing 2 as shown here is usually not carried out sealingly against the environment of the exhaust dryer 1; such would not be necessary or useful for the function of the exhaust air dryer 1 in any way. Rather, there are in the housing a plurality of columns or slots 9, which are symbolically represented here by arrows 9 and through which air from the environment of the exhaust air dryer 1 can get into it without significant hindrance. A heater 10, executable known as electric heater 10 or gas heater 10 is disposed in the supply air duct 7, as well as a blower 11 to promote the supply air.
Hinter der Trocknungskammer 6 gelangt die nun mit Feuchtigkeit beladene Luft, die nun „Abluft" genant wird, durch einen Abluftkanal 12 und einen Flusenfilter 13 zum Auffangen mitgeführter Flusen (worunter kleine Faserpartikel zu verstehen sind, welche der Luftstrom von den zu trocknenden Gegenständen ablöst) zu einem Abluftausgang 14 am Gehäuse 2. Entsprechend üblicher Praxis und Vorschrift kann der Abluftausgang 14 nicht einfach offen gelassen werden, wenn der Ablufttrockner 1 im Inneren eines Gebäudes aufgestellt ist; vielmehr muss ein Schlauch oder dergleichen angeschlossen werden, mit welchem die mit der Feuchtigkeit beladene Abluft direkt aus dem Gebäude herausgeführt werden kann. Im hier beschriebenen Ablufttrockner 1 ist das Gebläse 11 als ein zweiflutiges Gebläse 1 1 ausgeführt, was bedeutet, dass es zwei voneinander unabhängige Teilgebläse oder Fluten 15 und 16 in sich vereinigt. Von diesen beiden Fluten 15 und 16 ist eine erste Flut 15 im Abluftkanal 12 angeordnet, eine zweite Flut 16 hingegen im Zuluftkanal 6. Auf diese Weise arbeiten die beiden Fluten 15 und 16 in Reihenschaltung und fördern gemeinsam den Luftstrom von Zuluft bzw. Abluft durch den Ablufttrockner 1. Dieser Ablufttrockner 1 hat deshalb den Vorteil, sehr energieeffizient zu sein und außerdem ein rascheres Trocknen von Wäschestücken zu ermöglichen. Letzteres gilt deshalb, weil das zweiflutige Gebläse 11 eine Steigerung des Luftstroms durch den Ablufttrockner 1 gestattet. Die Steigerung des Luftstroms wiederum gestattet eine Steigerung der von der Heizung 8 aufzubringenden Heizleistung, womit eine weitere Beschleunigung des Trocknungsprozesses möglich ist. Außerdem ist es gut möglich, zusätzliche Maßnahmen zur wenigstens teilweisen Rückgewinnung der im Trocknungsprozess aufgewendeten Wärmeenergie zu treffen, worauf weiter unten im Detail eingegangen wird.Behind the drying chamber 6, the now laden with moisture air, which is now called "exhaust" passes through an exhaust duct 12 and a lint filter 13 for catching entrained lint (which are to be understood small fiber particles, which separates the air flow from the objects to be dried) According to common practice and regulations, the exhaust air outlet 14 can not simply be left open when the exhaust air dryer 1 is installed inside a building, but rather a hose or the like must be connected with which the moisture laden one Exhaust air can be led out directly from the building. In the exhaust air dryer 1 described here, the blower 11 is designed as a double-flow blower 1 1, which means that it combines two independent partial blower or floods 15 and 16 in itself. Of these two floods 15 and 16, a first flood 15 is disposed in the exhaust duct 12, a second flood 16, however, in the supply air duct 6. In this way, the two floods 15 and 16 work in series and jointly promote the air flow of supply air or exhaust air through the Exhaust air dryer 1. This exhaust air dryer 1 therefore has the advantage of being very energy efficient and also allowing faster drying of laundry items. The latter applies because the twin-flow fan 11 allows an increase of the air flow through the exhaust air dryer 1. The increase of the air flow in turn allows an increase of the heating power to be applied by the heater 8, whereby a further acceleration of the drying process is possible. In addition, it is quite possible to take additional measures for at least partial recovery of the heat energy spent in the drying process, which will be discussed in detail below.
Die beiden Fluten 15 und 16 des Gebläses 1 1 werden angetrieben von einem Motor 17, welcher auch die Trommel 6 dreht. Dieses Drehen geschieht über eine mit dem Motor 17 verbundene Riemenscheibe 18 und einen hier durch einen gestrichelten Pfeil angedeuteten, um die Trommel 6 und die Riemenscheibe 18 geschlungenen endlosen Riemen 19.The two floods 15 and 16 of the blower 1 1 are driven by a motor 17, which also rotates the drum 6. This rotation is done via a connected to the motor 17 pulley 18 and here indicated by a dashed arrow, around the drum 6 and the pulley 18 looped endless belt 19th
Der Wärmetauscher 20 gehört sowohl zum Zuluftkanal 7 als auch zum Abluftkanal 12; er ermöglicht eine Übertragung von Wärme aus der Abluft auf die Zuluft, entsprechend einem Rückgewinn von Wärmeenergie, die ansonsten mit der Abluft aus dem Ablufttrockner 1 abgeführt würde. Es sei darauf hingewiesen, dass die somit bewirkte Abkühlung der Abluft dazu führen kann, dass aus dieser Feuchtigkeit auskondensiert. Zum Auffangen und Entsorgen dieser kondensierten Feuchtigkeit ist gegebenenfalls Vorkehrung zu treffen; auf entsprechende Maßnahmen bei einem Kondensationstrockner bekannter Bauart, die ohne weiteres auf den hier dargestellten Ablufttrockner 1 übertragbar sind, sei dazu hingewiesen.The heat exchanger 20 is part of both the supply air duct 7 and the exhaust duct 12; it allows a transfer of heat from the exhaust air to the supply air, according to a recovery of heat energy that would otherwise be dissipated with the exhaust air from the exhaust air dryer 1. It should be noted that the thus caused cooling of the exhaust air can lead to condensed out of this moisture. If necessary, take precautions to collect and dispose of this condensed moisture; to appropriate measures in a condensation dryer of known design, which are readily transferable to the exhaust dryer 1 shown here, it should be noted.
Figur 2 zeigt Teile einer gegenüber der Ausführung gemäß Figur 1 geänderten Ausführungsform eines Ablufttrockners 1. die Veränderung besteht darin, dass der Zuluftkanal 7 zwischen der zweiten Flut 16 und dem Wärmetauscher 20 ergänzt ist um einen Durchflussregler 21 in Form einer beweglichen Klappe 21. durch diese Klappe 21 kann der Einfluss der zweiten Flut 16 auf die im Zuluftkanal 7 strömende Zuluft ganz oder teilweise aufgehoben werden. Damit ist eine Regelung des Luftstroms möglich. Insbesondere kann durch Verringerung des Luftstroms eine erhöhte Temperatur im Luftstrom nach dem Durchqueren der Heizung 8 bewirkt werden, was zum Zwecke einer beschleunigten Aufheizung oder gar Trocknung der feuchten Gegenstände in der Trocknungskammer 6 von Bedeutung sein kann.Figure 2 shows parts of a comparison with the embodiment of Figure 1 modified embodiment of a vented dryer 1. the change is that the supply air duct 7 is supplemented between the second flood 16 and the heat exchanger 20 to a flow controller 21 in the form of a movable flap 21. By this flap 21, the influence of the second flood 16 on the incoming air flowing in the supply air 7 can be completely or partially canceled. This allows regulation of the air flow. In particular, by reducing the air flow, an increased temperature in the air flow after passing through the heater 8 can be effected, which may be of importance for the purpose of accelerated heating or even drying of the moist objects in the drying chamber 6.
Vorliegend ist der Durchflussregler 21 so ausgeführt, dass er in dem Maße, in dem er den Teil des Zuluftkanals 7 mit der zweiten Flut 16 abriegelt, einen zweiten Zulufteingang 22 freigibt. So ist sichergestellt, dass unabhängig von der Stellung der Durchflussreglers 21 stets ein gewisser Fluss an Zuluft möglich und eine Überhitzung der Heizung 8 ausgeschlossen ist.In the present case, the flow regulator 21 is designed such that it releases a second inlet inlet 22 as it closes off the part of the supply air channel 7 with the second flow 16. This ensures that, regardless of the position of the flow controller 21 always a certain flow of supply air possible and overheating of the heater 8 is excluded.
In der Figur 3 ist ein zweiflutiges Gebläse 1 1 , ausgeführt als Radialgebläse 11 und angetrieben vom Motor 17, gezeigt. Die Fluten 15 und 16 sind gegeneinander abgedichtet. Ein einziges Laufrad 23 ist vorhanden, wobei jeder Flut 15 oder 16 eine Hälfte dieses Laufrades 23 zukommt.In the figure 3 is a double-flow blower 1 1, designed as a radial fan 11 and driven by the motor 17, is shown. The floods 15 and 16 are sealed against each other. A single impeller 23 is present, each flood 15 or 16 is one half of this impeller 23.
Die Figuren 4 und 5 zeigen eine Schrägansicht und eine Seitenansicht eines Ablufttrockners 1 zur Verdeutlichung der geometrischen Verhältnisse, in denen vorliegend durch die Anwendung eines zweiflutigen Gebläses 1 1 Vorteile erzielt werden. Die den Innenraum 3 im Gehäuse 2 am meisten in Anspruch nehmende Komponente des Ablufttrockners 2 ist die Trommel 6, die im Sinne der Erschließung von Bauraum für weitere Komponenten nicht verkleinert werden kann. Wünscht man eine bessere Gebläsewirkung, so ist auch der Bauraum für eine Vergrößerung des Gebläses 1 1 , welches sich gemäß herkömmlicher Praxis schräg unterhalb der Trommel 6 befindet, begrenzt. Mit der Einführung des zweiflutigen Gebläses 1 1 wird dieses Problem vorteilhaft gelöst, und ein Ablufttrockner 1 mit verbessertem Durchsatz an Zuluft und Abluft geschaffen. BEZUGSZEICHENLISTEFigures 4 and 5 show an oblique view and a side view of a vented dryer 1 to illustrate the geometric relationships in which presently 1 benefits are achieved by the application of a double-flow blower. The interior 3 in the housing 2 most consuming component of the exhaust dryer 2 is the drum 6, which can not be reduced in terms of development of space for other components. If you want a better fan effect, so is the space for an enlargement of the blower 1 1, which is according to conventional practice obliquely below the drum 6, limited. With the introduction of the dual-flow blower 1 1 this problem is solved advantageous, and created a vented dryer 1 with improved throughput of supply air and exhaust air. LIST OF REFERENCE NUMBERS
1 Ablufttrockner1 exhaust air dryer
2 Gehäuse2 housings
3 Innenraum3 interior
4 Steuereinrichtung4 control device
5 Achse5 axis
6 Trocknungskammer6 drying chamber
7 Zuluftkanal7 supply air duct
8 Erster Zulufteingang8 First air intake
9 Schlitz im Gehäuse9 slot in the housing
10 Heizung10 heating
11 Gebläse11 blowers
12 Abluftkanal12 exhaust duct
13 Flusenfilter13 lint filter
14 Abluftausgang14 exhaust air outlet
15 Erste Flut15 First tide
16 Zweite Flut16 Second flood
17 Motor17 engine
18 Riemenscheibe18 pulley
19 Riemen19 straps
20 Wärmetauscher20 heat exchangers
21 Durchflussregler, Klappe21 Flow regulator, flap
22 Zweiter Zulufteingang22 Second air intake
23 Laufrad 23 impeller

Claims

PATENTANSPRÜCHE
1. Ablufttrockner (1 ) mit einem einen Innenraum (3) umgrenzenden Gehäuse (2), wobei in dem Innenraum (3) angeordnet sind eine Trocknungskammer (6) für zu trocknende Gegenstände, ein Zuluftkanal (7) zwischen einem ersten Zulufteingang1. exhaust air dryer (1) with an interior (3) delimiting housing (2), wherein in the interior (3) are arranged a drying chamber (6) for objects to be dried, a supply air duct (7) between a first Zulufteingang
(8) und der Trocknungskammer (6) für Zuluft, eine Heizung (10) zur Erwärmung der Zuluft in dem Zuluftkanal (7), ein Gebläse (11 ), mit welchem die erwärmte Zuluft durch die Trocknungskammer (6) führbar ist, und ein Abluftkanal (12) zwischen der Trocknungskammer (6) und einem Abluftausgang (14) am Gehäuse (2) für Abluft, dadurch gekennzeichnet, dass das Gebläse (11 ) ein zweiflutiges Gebläse (11 ) mit einer ersten Flut (15) und einer zweiten Flut (16) ist, wobei die erste Flut (15) im Abluftkanal (12) und die zweite Flut (16) im Zuluftkanal (7) angeordnet ist.(8) and the drying chamber (6) for supply air, a heater (10) for heating the supply air in the supply air duct (7), a blower (11), with which the heated supply air through the drying chamber (6) can be guided, and a Exhaust air duct (12) between the drying chamber (6) and an exhaust air outlet (14) on the housing (2) for exhaust air, characterized in that the fan (11) a double-flow fan (11) having a first flood (15) and a second flood (16), wherein the first flow (15) in the exhaust duct (12) and the second flow (16) in the supply air duct (7) is arranged.
2. Ablufttrockner (1 ) nach Anspruch 1 , dadurch gekennzeichnet, dass die Trocknungskammer (6) durch einen im Gehäuse (2) angeordneten Motor (17) drehbar ist, und dass der erste Zulufteingang (8) zum Einsaugen von Luft aus einer Umgebung des Motors (17) angeordnet ist.2. exhaust air dryer (1) according to claim 1, characterized in that the drying chamber (6) by a in the housing (2) arranged motor (17) is rotatable, and that the first Zulufteingang (8) for sucking in air from an environment of Motors (17) is arranged.
3. Ablufttrockner (1 ) nach Anspruch 2, dadurch gekennzeichnet, dass der Motor (17) sowohl zum Antreiben der Trocknungskammer (6) als auch zum Antreiben des3. exhaust air dryer (1) according to claim 2, characterized in that the motor (17) both for driving the drying chamber (6) and for driving the
Gebläses (11 ) eingerichtet ist.Blower (11) is set up.
4. Ablufttrockner (1 ) nach einem der vorigen Ansprüche, dadurch gekennzeichnet, dass die erste Flut (15) und die zweite Flut (16) jeweils eine Durchflussleistung von 50 m3/h bis 500 m3/h aufweisen.4. exhaust air dryer (1) according to one of the preceding claims, characterized in that the first flood (15) and the second flood (16) each have a flow rate of 50 m 3 / h to 500 m 3 / h.
5. Ablufttrockner (1 ) nach einem der vorigen Ansprüche, dadurch gekennzeichnet, dass die Heizung (10) eine Gas- oder Elektroheizung (10) umfasst.5. Exhaust air dryer (1) according to one of the preceding claims, characterized in that the heater (10) comprises a gas or electric heater (10).
6. Ablufttrockner (1 ) nach einem der vorigen Ansprüche, dadurch gekennzeichnet, dass ein Wärmetauscher (20) vorhanden ist, in dem ein Wärmeaustausch zwischen dem Zuluftkanal (7) und dem Abluftkanal (12) stattfinden kann. 6. exhaust air dryer (1) according to one of the preceding claims, characterized in that a heat exchanger (20) is present, in which a heat exchange between the supply air duct (7) and the exhaust duct (12) can take place.
7. Ablufttrockner (1 ) nach einem der vorigen Ansprüche, dadurch gekennzeichnet, dass dem Zuluftkanal (7) ein Durchflussregler (21 ) zugeordnet ist.7. exhaust air dryer (1) according to one of the preceding claims, characterized in that the supply air duct (7) is associated with a flow regulator (21).
8. Ablufttrockner (1 ) nach Anspruch 7, dadurch gekennzeichnet, dass der Durchflussregler (21 ) zwischen der zweiten Flut (16) und der Heizung (10) angeordnet ist.8. exhaust air dryer (1) according to claim 7, characterized in that the flow regulator (21) between the second flood (16) and the heater (10) is arranged.
9. Ablufttrockner (1 ) nach einem der Ansprüche 7 und 8, dadurch gekennzeichnet, dass der Durchflussregler (21 ) eine Klappe (21 ) ist.9. exhaust air dryer (1) according to one of claims 7 and 8, characterized in that the flow controller (21) is a flap (21).
10. Ablufttrockner (1 ) nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass dem Durchflussregler (21 ) ein zweiter Zulufteingang (22) zugeordnet ist, welcher von dem Durchflussregler (21 ) wahlweise freigebbar ist. 10. Exhaust air dryer (1) according to any one of claims 7 to 9, characterized in that the flow controller (21) is associated with a second Zulufteingang (22) which is selectively releasable from the flow controller (21).
EP08870685A 2008-01-15 2008-12-18 Exhaust air dryer having fan Active EP2238287B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08870685T PL2238287T3 (en) 2008-01-15 2008-12-18 Exhaust air dryer having fan

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008004459A DE102008004459A1 (en) 2008-01-15 2008-01-15 Exhaust air dryer with a blower
PCT/EP2008/067874 WO2009089985A1 (en) 2008-01-15 2008-12-18 Exhaust air dryer having fan

Publications (2)

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EP2238287A1 true EP2238287A1 (en) 2010-10-13
EP2238287B1 EP2238287B1 (en) 2012-10-10

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US (1) US9404212B2 (en)
EP (1) EP2238287B1 (en)
DE (1) DE102008004459A1 (en)
PL (1) PL2238287T3 (en)
WO (1) WO2009089985A1 (en)

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US9404212B2 (en) 2016-08-02
PL2238287T3 (en) 2013-03-29
EP2238287B1 (en) 2012-10-10
WO2009089985A1 (en) 2009-07-23
DE102008004459A1 (en) 2009-07-16
US20100281707A1 (en) 2010-11-11

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