WO2011151213A2 - Sèche-linge à pompe à chaleur thermoélectrique permettant d'économiser de l'énergie - Google Patents

Sèche-linge à pompe à chaleur thermoélectrique permettant d'économiser de l'énergie Download PDF

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Publication number
WO2011151213A2
WO2011151213A2 PCT/EP2011/058360 EP2011058360W WO2011151213A2 WO 2011151213 A2 WO2011151213 A2 WO 2011151213A2 EP 2011058360 W EP2011058360 W EP 2011058360W WO 2011151213 A2 WO2011151213 A2 WO 2011151213A2
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WO
WIPO (PCT)
Prior art keywords
process air
motor
fan
drying
condenser
Prior art date
Application number
PCT/EP2011/058360
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English (en)
Other versions
WO2011151213A3 (fr
Inventor
Emre Ozturk
Serdar Kocaturk
Mehmet Kaya
Onur Hartoka
Original Assignee
Arcelik Anonim Sirketi
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 Arcelik Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Publication of WO2011151213A2 publication Critical patent/WO2011151213A2/fr
Publication of WO2011151213A3 publication Critical patent/WO2011151213A3/fr

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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 
    • D06F58/206—Heat pump 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
    • D06F58/30—Drying processes 

Definitions

  • the present invention relates to a laundry dryer which comprises a thermoelectric heat pump and wherein energy is saved by increasing the effectiveness of the thermoelectric heat pump.
  • thermoelectric heat pumps also called Peltier elements
  • the thermoelectric heat pumps have hot and cold sides and perform both the functions of condensing by cooling and also heating the drying air. While the hot side of the thermoelectric heat pumps used in laundry dryers supports the heater, the cold side supports the condenser.
  • the drying air In the process of drying the laundry, the drying air is cooled by some amount while being passed over the condenser, afterwards is passed over the thermoelectric heat pump and thereby dehumidification process of the drying air is accomplished in two stages. Similarly, the heating process is also in two stages.
  • the drying air which is almost completely dehumidified of the moisture contained therein by passing through the condenser and the thermoelectric heat pump, is heated some amount by being passed over the hot side of the thermoelectric heat pump and afterwards the heating process is completed by the drying air being passed over the heater.
  • the cooling load of the condenser and the thermoelectric heat pump should be balanced for an efficient drying process in laundry dryers wherein the heater, the condenser and the thermoelectric heat pump are used together.
  • the cooling load that is the amount of air that needs to be cooled and condensed
  • the duration of the drying process is prolonged and energy consumption increases.
  • the cooling load becomes unbalanced to the disadvantage of the thermoelectric heat pump
  • a greater amount of the cooling load is compensated by the condenser and the cooling load of the thermoelectric heat pump decreases. Decrease in the cooling load of the thermoelectric heat pump results in the reduction of heating effectiveness.
  • a process air fan is used for circulation of the process air and a cooling fan is used for cooling the condenser. Both fans and furthermore the drum are driven by a single motor. In a portion of the drying cycle duration, the cooling fan is rotated in the reverse direction to decrease the volumetric flow of air delivered unto the condenser.
  • the aim of the present invention is the realization of a laundry dryer which comprises the thermoelectric heat pump and wherein energy is saved by increasing the effectiveness of the thermoelectric heat pump.
  • the laundry dryer realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises a thermoelectric heat pump (Peltier) having a hot side and a cold side, the process air activated by the process air fan after leaving the drum continues its path in the drying duct passing from the condenser, the hot side, the cold side and the heater respectively and is delivered again to the drum in dehumidified and heated state.
  • the cooling fan that cools the condenser is stopped and the flow of cooling air is interrupted by means of a preferably electromagnetic type clutch disposed between the motor and the cooling fan, without changing the operating direction and speed of the motor in the heating phase at the start of the drying process and the last drying phase at the end of the drying process.
  • the function of cooling the process air is predominantly transferred to the thermoelectric heat pump by decreasing the effectiveness of the condenser.
  • the laundry dryer comprises a second clutch mounted between the motor and the process air fan, preventing the rotational movement of the motor from being transmitted to the process air fan by interrupting the connection between the motor and the process air fan and providing the air flow in the drying duct to be stopped in the heating phase at the start of the drying process without changing operating direction and speed of the motor.
  • the drying air flow is interrupted while the drum is continued to be rotated and the process air is provided to be heated faster.
  • the cooling fan in the heating phase at the start of the drying process and in the last drying phase at the end of the drying process, the cooling fan is stopped by means of the clutch, providing air not to be sent to the condenser.
  • the effectiveness of the condenser is decreased, a large portion of the condensation load of the condenser is transferred to the thermoelectric heat pump and energy is saved by increasing the efficiency of the thermoelectric heat pump.
  • Figure 1 – is the schematic view of a laundry dryer.
  • the laundry dryer (1) comprises a body, a drum (2) wherein the laundry is placed, a drying duct (3) wherein the process air is circulated, a heater (4) that heats the process air, a condenser (5) that condenses the process air, a process air fan (6) that circulates the process air in the drying duct (3), a cooling fan (7) that cools the condenser (5), a motor (8) that drives the drum (2), the process air fan (6) and the cooling fan (7) together, a first shaft (9) that transmits the rotational movement of the motor (8) to the cooling fan (7), a second shaft (10) that transmits the rotational movement of the motor (8) to the process air fan (6), a cooling duct (11) that directs the air sucked from the outer environment by the cooling fan (7) onto the condenser (5) and a thermoelectric heat pump (14) disposed in the drying duct (3), having a cold side (12) that condenses the process air passing thereover by cooling and a hot side (13) that
  • the process air activated by the process air fan (6) after leaving the drum (2) continues its path in the drying duct (3) by passing through the condenser (5), the thermoelectric heat pump (14) and the heater (4) to be delivered again to the drum (2) in dehumidified and heated state.
  • the condenser (5) is cooled with the air sucked by the cooling fan (7) from the outer environment and condenses the process air passing therethrough.
  • the drying process is accomplished in three stages in the laundry dryer (1).
  • the first stage of the drying process is named as the heating phase, in this phase the heater (4) is operated with a high runtime and the foremost aim is to heat the laundry dryer (1).
  • the second stage of the drying process is named as the steady state or the drying phase and the heater (4) is operated in the drying process with a runtime that is predetermined for the steady state.
  • the third stage of the drying process is named as the last drying phase. In this stage, the moisture contained in the process air is decreased substantially since the drying process is nearing the end, the runtime of the heater (4) is slowly decreased and the heater (4) is entirely turned off at the end of the predetermined time.
  • the laundry dryer (1) of the present invention comprises a preferably electromagnetic type clutch (15), mounted to the first shaft (9), that transmits the movement of the motor (8) to the cooling fan (7) by providing connection between the motor (8) and the cooling fan (7) and which prevents the rotational movement of the motor (8) from being transmitted to the cooling fan (7) by interrupting the connection between the motor (8) and the cooling fan (7) without changing the operating direction or speed of the motor (8) in the heating phase at the start of the drying process and/or in the last drying phase at the end of the drying process.
  • the heater (4) and the thermoelectric heat pump (14) heat the process air by drawing a great amount of energy.
  • the effect of the condenser (5) in the heating phase is negative since it tries to cool the process air. Therefore, changing the condenser (5) to the passive position or decreasing its effectiveness in the heating phase, increases efficiency of the drying process and decreases energy consumption.
  • the clutch (15) stops the cooling fan (7) by interrupting the connection between the motor (8) and the cooling fan (7) in the heating phase at the start of the drying process and thus cooling air is not delivered to the condenser (5).
  • the process air passes from the condenser (5) without being cooled and the effectiveness of the condenser (5) is decreased.
  • the process air reaches the thermoelectric heat pump (14) in almost uncooled and uncondensed state, and the cooling load and efficiency of the thermoelectric heat pump (14) increases.
  • the clutch (15) is activated, the cooling fan (7) is operated by the motor (8), and the cooling air is delivered to the condenser (5).
  • the clutch (15) is deactivated like in the heating phase at the start, providing cooling air not to be delivered to the condenser (5).
  • the process air passes from the condenser (5) without being condensed, reaches the cold side (12) of the thermoelectric heat pump (14), the cooling and condensation load is taken from the condenser (5) and transferred to the thermoelectric heat pump (14).
  • the laundry dryer (1) comprises a second clutch (115) mounted to the second shaft (10), that transmits the movement of the motor (8) to the process air fan (6) by providing connection between the motor (8) and the process air fan (6) and in the heating phase at the start of the drying process, prevents the rotational movement of the motor (8) from being transmitted to the process air fan (6) by interrupting the connection between the motor (8) and the process air fan (6) and provides the air flow in the drying duct (3) to be stopped without changing the operating direction and speed of the motor (8).
  • a second clutch (115) mounted to the second shaft (10), that transmits the movement of the motor (8) to the process air fan (6) by providing connection between the motor (8) and the process air fan (6) and in the heating phase at the start of the drying process, prevents the rotational movement of the motor (8) from being transmitted to the process air fan (6) by interrupting the connection between the motor (8) and the process air fan (6) and provides the air flow in the drying duct (3) to be stopped without changing the operating direction and speed of the motor (8)
  • the second clutch (115) provides the process air fan (6) to be stopped by interrupting the connection between the motor (8) and the process air fan (6), and process air is heated faster by its flow in the drying duct (3) being stopped.
  • the effectiveness of the condenser (5) is decreased by means of the clutch (15), the function of condensing the process air is transferred predominantly to the thermoelectric heat pump (14) and energy consumption is decreased by increasing the efficiency of the thermoelectric heat pump (14).
  • the drum (2), the process air fan (6) and the cooling fan (7) are rotated together by the motor (8), the motor (8) is not stopped or slowed down, the clutch (15) only interrupts the connection between the cooling fan (7) and the motor (8) for stopping the cooling fan (7).

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

Abstract

La présente invention concerne un sèche-linge (1) comprenant un tambour (2) dans lequel est placé le linge, un conduit de séchage (3) dans lequel circule l'air de traitement, un dispositif de chauffage (4) qui chauffe l'air de traitement, un condenseur (5) qui condense l'air de traitement, un ventilateur d'air de traitement (6) qui fait circuler l'air de traitement dans le conduit de séchage (3), un ventilateur de refroidissement (7) qui refroidit le condenseur (5), un moteur (8) qui entraîne le tambour (2), le ventilateur d'air de traitement (6) et le ventilateur de refroidissement (7) en même temps, un premier arbre (9) qui transmet le mouvement rotatif du moteur (8) au ventilateur de refroidissement (7), un second arbre (10) qui transmet le déplacement rotatif du moteur (8) au ventilateur d'air de traitement (6), un conduit de refroidissement (11) qui dirige l'air aspiré depuis l'environnement extérieur par le ventilateur de refroidissement (7) sur le condenseur (5) et une pompe à chaleur thermoélectrique (14) disposée dans le conduit de séchage (3), ayant un côté froid (12) qui condense l'air de traitement qui lui passe au-dessus par refroidissement et un côté chaud (13) qui chauffe l'air de traitement qui lui passe au-dessus.
PCT/EP2011/058360 2010-06-04 2011-05-23 Sèche-linge à pompe à chaleur thermoélectrique permettant d'économiser de l'énergie WO2011151213A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201004513 2010-06-04
TRA2010/04513 2010-06-04

Publications (2)

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WO2011151213A2 true WO2011151213A2 (fr) 2011-12-08
WO2011151213A3 WO2011151213A3 (fr) 2012-04-26

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2883996A1 (fr) * 2013-12-11 2015-06-17 BSH Hausgeräte GmbH Groupe compresseur pour un sèche-linge doté d'une pompe à chaleur, sèche-linge correspondant
EP4116482A1 (fr) 2021-07-08 2023-01-11 Arçelik Anonim Sirketi Séchoir à pompe à chaleur comportant un module d'appareil chauffant

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1108812A1 (fr) 1999-12-13 2001-06-20 BSH Bosch und Siemens Hausgeräte GmbH Sèche-linge a condensation domestique et sa méthode de mise en oeuvre
WO2008052906A2 (fr) 2006-10-31 2008-05-08 BSH Bosch und Siemens Hausgeräte GmbH Procédé pour faire fonctionner un appareil électroménager destiné à l'entretien du linge

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006026251A1 (de) * 2006-06-06 2007-12-13 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung und Verfahren zum Trocknen von Waschgut
DE102008004457A1 (de) * 2008-01-15 2009-07-16 BSH Bosch und Siemens Hausgeräte GmbH Trockner mit einer Wärmepumpe und einem Gebläse
DE202009005871U1 (de) * 2009-04-21 2010-09-16 Autokühler GmbH & Co. KG Thermoelektrische Wärmepumpe und damit hergestelltes Hausgerät zur Pflege von Wäschestücken

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1108812A1 (fr) 1999-12-13 2001-06-20 BSH Bosch und Siemens Hausgeräte GmbH Sèche-linge a condensation domestique et sa méthode de mise en oeuvre
WO2008052906A2 (fr) 2006-10-31 2008-05-08 BSH Bosch und Siemens Hausgeräte GmbH Procédé pour faire fonctionner un appareil électroménager destiné à l'entretien du linge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2883996A1 (fr) * 2013-12-11 2015-06-17 BSH Hausgeräte GmbH Groupe compresseur pour un sèche-linge doté d'une pompe à chaleur, sèche-linge correspondant
EP4116482A1 (fr) 2021-07-08 2023-01-11 Arçelik Anonim Sirketi Séchoir à pompe à chaleur comportant un module d'appareil chauffant

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WO2011151213A3 (fr) 2012-04-26

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