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WO2009083170A2 - Appareil ménager électrique et son procédé de fonctionnement - Google Patents

Appareil ménager électrique et son procédé de fonctionnement Download PDF

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Publication number
WO2009083170A2
WO2009083170A2 PCT/EP2008/010862 EP2008010862W WO2009083170A2 WO 2009083170 A2 WO2009083170 A2 WO 2009083170A2 EP 2008010862 W EP2008010862 W EP 2008010862W WO 2009083170 A2 WO2009083170 A2 WO 2009083170A2
Authority
WO
WIPO (PCT)
Prior art keywords
refrigerant
electric motor
air
temperature
fan
Prior art date
Application number
PCT/EP2008/010862
Other languages
English (en)
Other versions
WO2009083170A3 (fr
Inventor
Alberto Bison
Emanuele Diana
Diego Driussi
Marino Giro
Original Assignee
Electrolux Home Products Corporation N.V.
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39530181&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2009083170(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Electrolux Home Products Corporation N.V. filed Critical Electrolux Home Products Corporation N.V.
Publication of WO2009083170A2 publication Critical patent/WO2009083170A2/fr
Publication of WO2009083170A3 publication Critical patent/WO2009083170A3/fr

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 
    • D06F58/206—Heat pump arrangements

Definitions

  • the present invention relates to an electric household appliance and relative operating method.
  • the present invention relates to a washer-drier machine employing a wash fluid comprising a silicone solvent and/or water, or to a tumble laundry drier; to which the following description refers purely by way of example.
  • known home tumble laundry driers comprise: a substantially parallelepiped-shaped casing; a laundry drying drum mounted inside the casing to rotate about an axis of rotation, and facing a laundry loading-unloading opening formed in the front wall of the casing; a door hinged to the front wall of the casing to rotate to and from a work position closing the opening in the front wall; and a drive assembly for rotating the laundry drying drum about its axis of rotation.
  • Driers of the above type also comprise a hot-air generator for generating and circulating inside the drying drum a stream of hot, low-moisture air which flows through the drying drum to rapidly dry the laundry inside .
  • the hot-air generator operates in the same way as a heat pump, circulates the same air inside the drying drum, and continually extracts the surplus moisture from the hot air issuing from the drying drum after flowing through the laundry inside the drum.
  • the hot-air generator comprises a refrigerant compression device or so-called compressor, which transfers heat from one fluid to another by means of an intermediate refrigerant subjected to a closed thermodynamic cycle, so as to rapidly cool and so reduce the moisture content of the air issuing from the drying drum.
  • the compressor comprises a reciprocating or rotary mechanical compressor assembly to compress the intermediate gaseous refrigerant; and an electric motor, the output shaft of which is connected to the mechanical compression member to rotate or produce reciprocating movement of the compression members.
  • the electric motor is designed to rotate its output shaft at constant speed, and to rotate or produce a reciprocating movement of the compression members to obtain a substantially constant average flow of compressed refrigerant, and is controlled by the electronic central control unit via an on/off control system, which turns the electric motor on/off, depending on the balance condition of the intermediate refrigerant thermodynamic cycle.
  • the blade rotation speed or linear piston speed of the compression members of the compressor can only assume two values: maximum, when the heat pump is working; or zero, when the heat pump is off.
  • one of the major research goals in the drier market is that of devising straightforward, low-cost technical solutions by which to simultaneously reduce electric energy consumption and the noise level of the drier. Accordingly, considerable effort has been made over the past few years to achieve relatively low overall electric energy consumption of the compressor, and, at the same time, to greatly reduce the noise level of the compression members of the compressor. A lot still remains to be done, however.
  • an electric household appliance in particular a laundry drier, as claimed in Claim 1 and preferably, though not necessarily, in any one of the Claims depending directly or indirectly on Claim 1.
  • an electronic control device for installation in an electric household appliance, and as claimed in Claim 9.
  • Figure 1 shows a schematic lateral view of a tumble laundry drier in accordance with the teachings of the present invention
  • Figure 2 shows time graphs of the rotation speed of a compression device and refrigerant temperature in the course of an energy-saving drying cycle implemented by the Figure 1 drier.
  • Number 1 in Figure 1 indicates as a whole an electric household appliance, in particular a home laundry drier, substantially comprising a preferably, though not necessarily, parallelepiped-shaped casing 2; and a laundry drying drum 3, which houses the laundry to be dried, is mounted to rotate freely inside casing 2 about a respective axis of rotation L, and directly faces a laundry loading-unloading opening 2a formed in the front wall of casing 2.
  • Drier 1 also comprises a drive assembly 4 for rotating laundry drying drum 3 about its axis of rotation L; and a door (not shown) hinged to the front wall of casing 2 to rotate to and from a work position closing opening 2a in the front wall to seal laundry drying drum 3.
  • Drier 1 also comprises a hot-air generator 7 housed inside casing 2 and designed to circulate inside drying drum 3 a stream of hot, low-moisture air, which flows over, to rapidly dry, the laundry inside the drum.
  • a hot-air generator 7 housed inside casing 2 and designed to circulate inside drying drum 3 a stream of hot, low-moisture air, which flows over, to rapidly dry, the laundry inside the drum.
  • hot-air generator 7 operates in the same way as a heat pump, by transferring heat from one fluid to another by means of an intermediate refrigerant subjected to a closed thermodynamic cycle, the thermodynamic principles of which are commonly known and therefore not described in detail, and provides for gradually drawing air from drying drum 3; extracting surplus moisture from the hot air drawn from drying drum 3; heating the dried air to a predetermined temperature, normally higher than that of the air inside drying drum 3; and feeding the heated, dried air back into drying drum 3, where it again flows over, to rapidly dry, the laundry inside the drum.
  • hot-air generator 7 continually dries and heats the air drawn from drying drum 3, to rapidly dry the laundry inside the drum.
  • hot-air generator 7 substantially comprises an air-circulating pipe 8 connected at one end to a perforated rear wall of drying drum 3 to feed hot air into drum 3, and at the other end to a front portion of drying drum 3, from which it draws moisture-laden air out of the drum.
  • Hot-air generator 7 also comprises a refrigerant compression device 9, or so-called compressor, which compresses the refrigerant (e.g. adiabatically) so that its pressure and temperature are much higher at the outlet than at the inlet of compression device 9. More specifically, compression device 9 comprises a mechanical compression member 9a for compressing the refrigerant; and a variable-speed electric motor 9b, the output shaft of which is connected by a transmission
  • compression device 9 may be a rotary compressor, in which mechanical compression member 9a comprises blades rotating freely about an axis of rotation, and is connected to the output shaft of the electric motor, which rotates the blades to compress the gaseous refrigerant .
  • compression device 9 may be a reciprocating compressor, in which mechanical compression member 9a comprises a piston mounted to slide freely, inside a compression chamber of compression device 9, between a suction position and a compression position; and a mechanical transmission device, which converts the rotary movement generated by the electric motor to linear movement of the piston.
  • Reciprocating and rotary compression devices are known and therefore not described in detail, except to state that the variable-speed electric motor is preferably, though not necessarily, an inverter motor or brushless motor or any other similar electric motor.
  • hot-air generator 7 also comprises a first heat exchanger 10, or so-called evaporator, located along air-circulating pipe 8 and connected to compression device 9 so that the refrigerant absorbs heat from the airflow from drying drum 3, thus condensing the surplus moisture in the airflow.
  • a first heat exchanger 10 or so-called evaporator
  • Hot-air generator 7 also comprises a second heat exchanger 11, or so-called condenser, located along air- circulating pipe 8 and connected to compression device 9 to receive the refrigerant and so release heat to the airflow into drying drum 3.
  • a second heat exchanger 11 or so-called condenser, located along air- circulating pipe 8 and connected to compression device 9 to receive the refrigerant and so release heat to the airflow into drying drum 3.
  • Hot-air generator 7 also comprises a refrigerant circuit 12 for circulating refrigerant through compression device 9, first heat exchanger 10, and second heat exchanger 11, to perform the heat-pump thermodynamic cycle.
  • circuit 12 substantially comprises a first portion 12a connecting a heated- refrigerant outlet of compression device 9 to an inlet of second heat exchanger 11; a second portion 12b connecting an outlet of second heat exchanger 11 to an inlet of first heat exchanger 10 via a laminar-flow valve 13; and a third portion 12c connecting an outlet of first heat exchanger 10 to an inlet of compression device 9.
  • drier 1 also comprises a ventilation device 14 in turn comprising at least one fan 14a facing compression device 9 and rotating about a respective axis R; and an electric motor 14b, which rotates fan 14a to remove heat from, and so cool, compression device 9.
  • a ventilation device 14 in turn comprising at least one fan 14a facing compression device 9 and rotating about a respective axis R; and an electric motor 14b, which rotates fan 14a to remove heat from, and so cool, compression device 9.
  • Drier 1 also comprises an electronic central control unit 15, which regulates the speed of motor 9b of compression device 9 by means of a signal CV, and turns electric motor 14b of ventilation device 14 on/off by means of a signal CR, so as to rotate fan 14a, or not, depending on the temperature T of the refrigerant circulating in refrigerant circuit 12.
  • Drier 1 also comprises at least one temperature sensor 16, e.g. a thermocouple, located along refrigerant circuit 12 to transmit to electronic central control unit 15 the temperature T of the refrigerant circulating in refrigerant circuit 12. More specifically, in the Figure 1 example, temperature sensor 16 is located along second portion 12b of refrigerant circuit 12 to measure the temperature T of the refrigerant issuing from second heat exchanger 11.
  • Drier 1 also comprises an interface device 18 enabling the user to select an energy-saving drying cycle, which substantially provides for reducing, for a given time period, the rotation speed, with respect to a steady-operating rotation speed, of electric motor 9b of compression device 9, and for simultaneously activating/deactivating rotation of fan 14a to keep refrigerant temperature T around a predetermined target temperature T 0 .
  • the operating method of drier 1 will now be described, assuming the energy-saving drying cycle has been selected by the user on interface device 18.
  • the energy-saving drying cycle comprises the following steps. To begin with, ventilation device 14 is kept off, and electronic central control unit 15 brings electric motor 9b of compression device 9 up to its maximum steady speed V MAX
  • the maximum steady speed V MAX of electric motor 9b may be, for example, about 6000 rpm; and, at this step, the refrigerant temperature T measured along portion 12a of refrigerant circuit 12 increases rapidly (interval A in Figure 2 ) .
  • electronic central control unit 15 activates motor 14b of ventilation device 14 to rotate fan 14a, which begins removing heat from compression device 9 to reduce refrigerant temperature T (interval C in Figure 2) .
  • electronic central control unit 15 maintains a substantially constant intermediate speed Vi nt of motor 9b of compression device 9.
  • electronic central control unit 15 deactivates motor 14b and, therefore, fan 14a of ventilation device 14 (interval D in Figure 2), thus deactivating heat removal from compression device 9 by fan 14a, and so once more increasing refrigerant temperature T (interval D in Figure 2) .
  • Temperature T is monitored constantly by electronic central control unit

Landscapes

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

Abstract

L'invention concerne un appareil ménager électrique (1) ayant un générateur d'air chaud (7) destiné à acheminer/aspirer de l'air chaud vers/en provenance d'un tambour de séchage (3) le long d'un tuyau de circulation d'air (8) ; un certain nombre d'échangeurs de chaleur (10, 11) se trouvant le long du tuyau de circulation d'air (8) pour permettre à un fluide frigorigène d'absorber/de libérer de la chaleur vers/en provenance du flux d'air circulant dans le tuyau de circulation d'air (8) ; un dispositif de compression (9) ayant des organes de compression mobiles (9a), et un moteur électrique (9b) destiné à faire fonctionner les organes de compression mobiles (9a) ; un ventilateur (14a) destiné à éliminer la chaleur en provenance du dispositif de compression (9) ; et une unité de commande centrale électronique (15), qui commande la vitesse du moteur électrique (9b) pour obtenir une vitesse intermédiaire (vint) inférieure à une vitesse maximale (VMAX) du moteur électrique (9b), et qui active/désactive le ventilateur (14a) pour maintenir la température (T) du fluide frigorigène dans les limites d'une plage prédéterminée d'une température cible (T0).
PCT/EP2008/010862 2007-12-31 2008-12-18 Appareil ménager électrique et son procédé de fonctionnement WO2009083170A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP07150493A EP2077350B1 (fr) 2007-12-31 2007-12-31 Appareil domestique électrique et son procédé de fonctionnement
EP07150493.0 2007-12-31

Publications (2)

Publication Number Publication Date
WO2009083170A2 true WO2009083170A2 (fr) 2009-07-09
WO2009083170A3 WO2009083170A3 (fr) 2009-08-27

Family

ID=39530181

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/010862 WO2009083170A2 (fr) 2007-12-31 2008-12-18 Appareil ménager électrique et son procédé de fonctionnement

Country Status (3)

Country Link
EP (1) EP2077350B1 (fr)
PL (1) PL2077350T3 (fr)
WO (1) WO2009083170A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012219975A1 (de) 2012-10-31 2014-04-30 BSH Bosch und Siemens Hausgeräte GmbH Wäschetrocknungsgerät mit Wärmepumpe
JP2014161539A (ja) * 2013-02-26 2014-09-08 Toshiba Corp 衣類乾燥機のコンプレッサ駆動装置
WO2023124723A1 (fr) * 2021-12-29 2023-07-06 广东美的白色家电技术创新中心有限公司 Procédé de régulation de température d'échappement de compresseur, et appareil, dispositif et support

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2147999A1 (fr) * 2008-07-24 2010-01-27 Electrolux Home Products Corporation N.V. Séchoir à linge pour usage domestique
DE102008040853A1 (de) * 2008-07-30 2010-02-04 BSH Bosch und Siemens Hausgeräte GmbH Kondensationstrockner mit einer Wärmepumpe und Erkennung eines unzulässigen Betriebszustands sowie Verfahren zu seinem Betrieb
EP2284310B1 (fr) * 2009-08-12 2014-07-09 Electrolux Home Products Corporation N.V. Sèche-linge à tambour avec pompe à chaleur et procédé pour faire fonctionner une pompe à chaleur pour un sèche-linge
US8528227B2 (en) 2010-07-26 2013-09-10 General Electric Company Apparatus and method for refrigerant cycle capacity acceleration
US8601717B2 (en) * 2010-07-26 2013-12-10 General Electric Company Apparatus and method for refrigeration cycle capacity enhancement
US8353114B2 (en) 2010-07-26 2013-01-15 General Electric Company Apparatus and method for refrigeration cycle with auxiliary heating
EP2455526A1 (fr) * 2010-11-17 2012-05-23 BSH Bosch und Siemens Hausgeräte GmbH Machine comportant une pompe à chaleur et ensemble de procédés correspondant
EP2733252A1 (fr) * 2012-11-16 2014-05-21 Electrolux Home Products Corporation N.V. Procédé d'utilisation d'un sèche-linge avec pompe à chaleur, sèche-linge avec pompe à chaleur ou machine à laver avec pompe à chaleur ayant une fonction de séchage
EP2733255A1 (fr) * 2012-11-16 2014-05-21 Electrolux Home Products Corporation N.V. Procédé pour faire fonctionner un appareil de traitement du linge et appareil de traitement de linge
EP2733253A1 (fr) * 2012-11-16 2014-05-21 Electrolux Home Products Corporation N.V. Procédé d'utilisation d'un sèche-linge avec pompe à chaleur, sèche-linge avec pompe à chaleur ou machine à laver avec pompe à chaleur ayant une fonction de séchage
EP2733254A1 (fr) 2012-11-16 2014-05-21 Electrolux Home Products Corporation N.V. Appareil de traitement de linge de pompe à chaleur et procédé de fonctionnement d'un appareil de traitement de linge de pompe à chaleur
US9670612B2 (en) * 2014-08-13 2017-06-06 Lg Electronics Inc. Laundry treatment apparatus and method for controlling a laundry treatment apparatus
CN105862369B (zh) * 2016-05-26 2019-01-25 无锡小天鹅股份有限公司 干衣系统和具有其的干衣机或洗干一体机
CN106048969B (zh) * 2016-07-29 2018-06-19 无锡小天鹅股份有限公司 干衣装置

Citations (4)

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Publication number Priority date Publication date Assignee Title
DE4409607A1 (de) * 1993-04-21 1994-10-27 Miele & Cie Kondensationswäschetrockner mit einer Wärmepumpe
EP1209277A2 (fr) * 2000-11-20 2002-05-29 Electrolux Zanussi S.p.A. Sèche-linge avec pompe à chaleur
US20050217133A1 (en) * 2003-04-02 2005-10-06 Yuuichi Yakumaru Drying device and method of operation therefor
EP1811076A1 (fr) * 2006-01-20 2007-07-25 SANYO ELECTRIC Co., Ltd. Sécheur

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK0999302T3 (da) * 1998-10-21 2003-12-01 Whirlpool Co Tørretumbler med en varmepumpe
CN100334290C (zh) * 2003-08-07 2007-08-29 三洋电机株式会社 烘干机
JP4266903B2 (ja) * 2004-09-07 2009-05-27 三洋電機株式会社 洗濯乾燥機
JP4386895B2 (ja) * 2006-01-20 2009-12-16 三洋電機株式会社 乾燥機

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4409607A1 (de) * 1993-04-21 1994-10-27 Miele & Cie Kondensationswäschetrockner mit einer Wärmepumpe
EP1209277A2 (fr) * 2000-11-20 2002-05-29 Electrolux Zanussi S.p.A. Sèche-linge avec pompe à chaleur
US20050217133A1 (en) * 2003-04-02 2005-10-06 Yuuichi Yakumaru Drying device and method of operation therefor
EP1811076A1 (fr) * 2006-01-20 2007-07-25 SANYO ELECTRIC Co., Ltd. Sécheur

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012219975A1 (de) 2012-10-31 2014-04-30 BSH Bosch und Siemens Hausgeräte GmbH Wäschetrocknungsgerät mit Wärmepumpe
WO2014067797A2 (fr) 2012-10-31 2014-05-08 BSH Bosch und Siemens Hausgeräte GmbH Sèche-linge doté d'une pompe à chaleur
JP2014161539A (ja) * 2013-02-26 2014-09-08 Toshiba Corp 衣類乾燥機のコンプレッサ駆動装置
WO2023124723A1 (fr) * 2021-12-29 2023-07-06 广东美的白色家电技术创新中心有限公司 Procédé de régulation de température d'échappement de compresseur, et appareil, dispositif et support

Also Published As

Publication number Publication date
PL2077350T3 (pl) 2011-12-30
WO2009083170A3 (fr) 2009-08-27
EP2077350A1 (fr) 2009-07-08
EP2077350B1 (fr) 2011-07-20

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