EP3874085B1 - Ein hybrid wäschetrockner - Google Patents

Ein hybrid wäschetrockner Download PDF

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Publication number
EP3874085B1
EP3874085B1 EP19778480.4A EP19778480A EP3874085B1 EP 3874085 B1 EP3874085 B1 EP 3874085B1 EP 19778480 A EP19778480 A EP 19778480A EP 3874085 B1 EP3874085 B1 EP 3874085B1
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EP
European Patent Office
Prior art keywords
water
water tank
air duct
air
pump
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EP19778480.4A
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English (en)
French (fr)
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EP3874085A1 (de
Inventor
Mutlu IPEK
Vasi Kadir Ertis
Salih GOK
Samet HOCAOGLU
Faruk KOCABIYIK
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Arcelik AS
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Arcelik AS
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    • 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
    • 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/206—Heat pump arrangements

Definitions

  • the present invention relates to a hybrid laundry dryer comprising a heat pump and a heater.
  • the hot and humid air drawn from the drum cools down and leaves its moisture while passing over the evaporator.
  • the air dehumidified on the evaporator passes over the condenser afterwards.
  • the condenser enables the air to be heated, thus increasing the dehumidification capacity thereof.
  • the air passing over the condenser is delivered back onto the laundry in the tub.
  • the drying cycle continues until the laundry is dry.
  • a resistance heater is provided in the air duct in addition to the heat pump system.
  • the operation system is the same as that of the heat pump laundry dryer, and the resistance heater is used for heating the air together with the condenser.
  • the air dehumidified in the evaporator is heated while passing over the condenser and then reheated again by means of the resistance heater at the fan outlet, in other words at the drum inlet to be delivered onto the laundry.
  • the drying time is shortened with respect to heat pump laundry dryers.
  • the water condensed from the humid air in the evaporator is collected in a discharge duct at the rear side of the machine. Afterwards, said water is sent to the water tank at the upper side of the machine by means of the pump. The water condensing during the drying cycle is pumped into the water tank and collected therein.
  • the water tank has a detachable structure.
  • the user takes the water tank out of the machine and empties and replaces the same. Emptying the water tank is not an easy operation for the users since the water tank is heavy. Moreover, the condensate is emptied without being benefited from.
  • Patent No. EP2392717 (B1 ) relates to a laundry washer/dryer and the discharge method of the condensate.
  • the Patent No. EP3246456 (A1 ) relates to a control method for a clothes dryer and the clothes dryer.
  • Patent No. EP2796614 (A1 ) relates to a clothes dryer and method of cleaning evaporator in clothes dryer.
  • the Patent No. EP1550829 (A1 ) relates to a drying apparatus having a heat pump.
  • the aim of the present invention is the realization of a laundry dryer wherein the water collected as a result of condensation is used.
  • Such a laundry dryer is of hybrid type and comprises a heat pump and a resistance heater.
  • the water collected in the water tank which receives the condensate at the end of the drying process and which is emptied by the user is sent to the air duct, wherein the processing air is circulated, by means of an auxiliary condensation system comprising a supply pump and a connection tube.
  • the water sent to the air duct is sprayed into the air duct by means of nozzles and dehumidifies the processing air.
  • the auxiliary condensation system is used instead of the evaporator in some drying processes wherein the heat pump is not activated and only the resistance heater is operated, and the processing air is dehumidified, thus providing the drying of the laundry.
  • the heat pump is active, the condensate, which is collected in the water tank and which would be emptied by the user, is used.
  • Figure 1 - is the schematic view of the hybrid laundry dryer of the present invention.
  • the hybrid laundry dryer (1) with heat pump (17) and resistance heater (5) comprises a body; a tub (2) wherein the laundry to be dried is loaded; an air duct (3) wherein the processing air (drying air) cycle is performed; a fan (4) providing the circulation of the processing air; a resistance heater (5) which is disposed in the air duct (3) at the inlet of the drum (2); a compressor (6) which provides the refrigerant cycle, an evaporator (7) which is disposed in the air duct (3) and which condenses the humid processing air, a condenser (8) which is disposed in the air duct (3) and which heats the processing air dehumidified in the evaporator (7) and a discharge duct (9) which is disposed at the lower side of the body and wherein the water condensing in the evaporator (7) is collected, which all together form the heat pump (17) which provides the heating and dehumidification of the processing air; a detachable water tank (10) which is disposed at the upper side of the body
  • the hot and humid air drawn from the drum (2) cools down and leaves its moisture while passing over the evaporator (7).
  • the air dehumidified in the evaporator (7) heats up while passing over the condenser (8), and the temperature of the processing air at the inlet of the drum (2) is increased by operating the heater (5) if required.
  • the water condensed from the humid air in the evaporator (7) is collected in the discharge duct (9) under the evaporator (7) and then sent from here to the water tank (10) by means of the discharge pump (11).
  • the water condensed during the drying cycle is collected in the water tank (10), and then the water tank (10) is taken outside and emptied by the user.
  • the laundry dryer (1) of the present invention comprises an auxiliary condensation system (18) having a supply pump (12) which delivers the condensate collected in the water tank (10) to the air duct (3), a connection tube (13) and at least one nozzle (14) which is connected to the end of the connection tube (13), which extends into the air duct (3) and which sprays the water taken from the water tank (10) into the air duct (3).
  • the heater (5) and the auxiliary condensation system (18) are activated instead of the heat pump (17).
  • the processing air circulated in the air duct (3) by means of the fan (4) is heated by means of the heater (5) at the inlet of the drum (2) instead of the condenser (8), the air gathering moisture while passing over the laundry is condensed by means of the water which is taken from the water tank (10) by means of the auxiliary condensation system (18) and sprayed into the air duct (3).
  • the laundry dryer (1) comprises a discharge valve (15) with one inlet and two outlets which is disposed at the outlet of the discharge pump (11), which guides the water condensing in the evaporator (7) and collected in the discharge duct (9) to the water tank (10) when the heat pump (17) is active and which enables the water collected in the discharge duct (9) to be discharged via the water outlet to the outer environment when the heater (5) and the auxiliary condensation system (18) are active.
  • the discharge valve (15) guides the water pumped from the discharge duct (9) by means of the discharge pump (11) to the water tank (10).
  • the water is collected in the water tank (10) to be used in the auxiliary condensation system (18).
  • the heater (5) and the fan (4) are operated and the auxiliary condensation system (18) is activated.
  • the water collected in the water tank (10) in the previous drying cycle is sent into the drying duct (3) by means of the supply pump (12) and the connection tube (13) and sprayed into the air duct (3) by means of the nozzles (14).
  • the auxiliary condensation system (18) sprays water by means of the nozzles (14) into the part of the air duct (3) which is before the evaporator (7) in the air flow direction and which is the narrowest cross-section of the air duct (3). Since the air flow rate increases at this region, the rate of condensation gets higher.
  • the laundry dryer (1) comprises a sensor unit (16), for example an ammeter, which is electrically connected to the supply pump (12), which determines the amount of water pumped from the water tank (10) into the air duct (3) and whether the water has run out by measuring the current drawn by the supply pump (12), and which provides that the supply pump (12), hence the auxiliary condensation system (18), is deactivated and the heat pump (17) is activated when the water in the water tank (10) has run out.
  • the sensor unit (16) detects that the water in the water tank (10) has run out and the supply pump (12) "runs idle,” the supply pump (12) is stopped and the auxiliary condensation system (18) is deactivated.
  • the processing air is condensed by the evaporator (7).
  • the auxiliary condensation system (18) When the auxiliary condensation system (18) is active, the water pumped from the discharge duct (9) by the discharge pump (11) is discharged by means of the discharge valve (15).
  • the heat pump (17) When the heat pump (17) is activated, the water pumped from the discharge duct (9) by the discharge pump (11) is sent to the water tank (10) and collected therein.
  • the condensate collected in the water tank (10) is used in the dehumidification process in the next drying cycle.
  • the heat pump (17) is not operated, and the processing air is heated only by the heater (5) and the processing air is dehumidified by the auxiliary condensation system (18). By using the condensate, savings are provided.

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

Claims (4)

  1. - Ein Wäschetrockner (1) umfasst eine Trommel (2), in die die zu trocknende Wäsche geladen wird; einen Luftkanal (3), in dem der Prozessluftkreislauf durchgeführt wird; ein Ventilator (4), der für die Zirkulation der Prozessluft sorgt; einen Heizer (5), der im Luftkanal (3) am Einlass der Trommel (2) angeordnet ist; einen Kompressor (6), einen Verdampfer (7), einen Kondensator (8) und eine Ablassleitung (9), in der das im Verdampfer (7) kondensierende Wasser gesammelt wird, die alle zusammen die Wärmepumpe (17) bilden; einen Wassertank (10), der das Kondensat aufnimmt und vom Benutzer entleert wird; und eine Ablasspumpe (11), die das Wasser im Ablassleitung (9) in den Wassertank (10) pumpt, gekennzeichnet ist es dadurch, dass
    - dass ein Hilfskondensationssystem (18) mit einer Versorgungspumpe (12), die das im Wassertank (10) gesammelte Kondensat in den Luftkanal (3) fördert, einem Verbindungsrohr (13) und mindestens einer Düse (14), die an das Ende des Verbindungsrohrs (13) angeschlossen ist, die in den Luftkanal (3) hineinragt und das aus dem Wassertank (10) entnommene Wasser in den Luftkanal (3) einsprüht, wobei das Hilfskondensationssystem (18) dazu dient, die Prozessluft in einem Trocknungsprozess zu entfeuchten, bei dem die Wärmepumpe (17) nicht aktiviert ist und nur der Heizer (5) betrieben wird, und so für die Trocknung der Wäsche zu sorgen.
  2. - Ein Wäschetrockner (1) wie in Anspruch 1 aufgeführt, ist dadurch gekennzeichnet, dass ein Ablassventil (15) mit einem Einlass und zwei Auslässen am Auslass der Ablasspumpe (11) angeordnet ist, dass das in der Ablassleitung (9) gesammelte Wasser zum Wassertank (10) leitet, wenn die Wärmepumpe (17) aktiv ist, und das es ermöglicht, dass dasselbe über den Wasserauslass an die äußere Umgebung abgegeben wird, wenn der Heizer (5) und das Hilfskondensationssystem (18) aktiv sind.
  3. - Ein Wäschetrockner (1) wie in Anspruch 1 oder 2 aufgeführt, ist dadurch gekennzeichnet, dass das Hilfskondensationssystem (18), das mittels der Düsen (14) Wasser in den Teil des Luftkanals (3) sprüht, der sich in Luftströmungsrichtung vor dem Verdampfer (7) befindet und der der engste Querschnitt des Luftkanals (3) ist.
  4. - Ein Wäschetrockner (1) wie in Anspruch 1 oder 2 aufgeführt, ist dadurch gekennzeichnet, dass eine Sensoreinheit (16), die elektrisch mit der Versorgungspumpe (12) verbunden ist, die die aus dem Wassertank (10) in den Luftkanal (3) gepumpte Wassermenge durch Messung des von der Versorgungspumpe (12) entnommenen Stroms bestimmt, und eine Steuereinheit, die dafür sorgt, dass das Hilfskondensationssystem (18) deaktiviert und die Wärmepumpe (17) aktiviert wird, wenn das Wasser im Wassertank (10) verbraucht ist.
EP19778480.4A 2018-11-01 2019-09-24 Ein hybrid wäschetrockner Active EP3874085B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201816349 2018-11-01
PCT/EP2019/075614 WO2020088847A1 (en) 2018-11-01 2019-09-24 A hybrid laundry dryer

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EP3874085A1 EP3874085A1 (de) 2021-09-08
EP3874085B1 true EP3874085B1 (de) 2024-04-24

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* Cited by examiner, † Cited by third party
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CN114481577B (zh) * 2020-10-27 2024-01-23 上海海尔洗涤电器有限公司 一种干衣机及干衣控制方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130008049A1 (en) * 2011-07-07 2013-01-10 General Electric Company Device and method for heat pump based clothes dryer

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Publication number Priority date Publication date Assignee Title
JP2004116899A (ja) * 2002-09-26 2004-04-15 Matsushita Electric Ind Co Ltd ヒートポンプ式乾燥機
KR101012386B1 (ko) 2009-01-09 2011-02-09 엘지전자 주식회사 세탁장치 및 그 제어방법
JPWO2013094145A1 (ja) * 2011-12-20 2015-04-27 パナソニックＩｐマネジメント株式会社 衣類乾燥機および衣類乾燥機の蒸発器の洗浄方法
CN105839375A (zh) * 2015-01-12 2016-08-10 青岛海尔洗衣机有限公司 一种干衣机控制方法及干衣机
US10738411B2 (en) * 2016-10-14 2020-08-11 Whirlpool Corporation Filterless air-handling system for a heat pump laundry appliance

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130008049A1 (en) * 2011-07-07 2013-01-10 General Electric Company Device and method for heat pump based clothes dryer

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WO2020088847A1 (en) 2020-05-07
EP3874085A1 (de) 2021-09-08

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