EP2093322B1 - Séchoir doté d'un moteur refroidi - Google Patents

Séchoir doté d'un moteur refroidi Download PDF

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Publication number
EP2093322B1
EP2093322B1 EP09100118.0A EP09100118A EP2093322B1 EP 2093322 B1 EP2093322 B1 EP 2093322B1 EP 09100118 A EP09100118 A EP 09100118A EP 2093322 B1 EP2093322 B1 EP 2093322B1
Authority
EP
European Patent Office
Prior art keywords
air
dryer
cooling
duct
engine
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.)
Not-in-force
Application number
EP09100118.0A
Other languages
German (de)
English (en)
Other versions
EP2093322A1 (fr
Inventor
Holger LÖFFLER
Andreas Ziemann
Frank Laube
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 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 Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP2093322A1 publication Critical patent/EP2093322A1/fr
Application granted granted Critical
Publication of EP2093322B1 publication Critical patent/EP2093322B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
    • 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 a dryer with a cooled engine.
  • a dryer in the form of a tumble dryer is executed and used in principle as an exhaust air dryer or circulating air dryer.
  • moist laundry items are dried by first heating dry air as so-called process air and then passing it over the wet laundry items located in a drum.
  • the moisture contained in the items of laundry evaporates and is led out of the drum in the form of moist, warm process air.
  • the moist, warm process air is cooled by precipitation of the moisture (condensation dryer), first in a heat exchanger and then returned to the drying chamber after renewed heating.
  • the air laden with moisture after passing through the laundry drum is generally conducted out of the exhaust air dryer.
  • the process air can be cooled by deposition of the moisture contained in it, whereby a heat recovery can take place.
  • a conventional dryer has a housing and a drying chamber for objects to be dried, a process air duct in which a heater for heating the process air and a first blower, a motor for driving the drying chamber, a heat exchanger and a cold air section in the process air duct or in a Cooling air duct on.
  • the cold air section is generally referred to the part which is located between a cold air inlet and a heat exchanger.
  • cold air is usually used air at a temperature which is substantially equal to the room temperature, i. the temperature of the installation room, is.
  • the heating of the motor used to drive the dryer determines its dimensioning and other design.
  • the heat dissipation is difficult to the surrounding air around the engine. With an increase in the internal temperature, the heat dissipation from the engine deteriorates because the engine is generally air-cooled.
  • the JP 02 036900 A describes in the FIGS. 1 to 3 a dryer in which cooling air cools a motor 23 as it flows from a guide path 34 to a guide outlet 7, and air separated at a ventilation inlet 35 cools electrical equipment (parts) and a top plate, etc., as well as the motor Motor 23 and then reaches the guide output 7th
  • the JP 02 302299 A describes a dryer in which a condensation of moisture in the housing should be prevented.
  • Fig. 1 Air is guided from an input 7 by means of a cooling fan 9 to a motor 12 and from this to an output 29.
  • an exhaust air line which is used for the heat exchange, branched into a first and a second exhaust path, wherein the first exhaust path leads directly to an engine and then to an exhaust air outlet and the second exhaust air path leads to an exhaust air outlet.
  • the JP 09 075595 A describes a dryer in which an accumulation of dust or lint is to be prevented within the dryer frame.
  • Fig. 1 For example, an air guide groove 12b is placed in a housing 12 so that cooled air from a heat exchanger is guided to an AC motor 11, which apparently also prevents deposition of lint or dust on the motor.
  • the object of the invention was therefore to provide a dryer that allows improved operation of the engine.
  • the reliability and life of the engine and thus of the dryer should be improved.
  • the invention thus relates to a dryer with a housing and a drying chamber for objects to be dried, a process air duct in which a heater for heating the process air and a first blower is a motor for driving the drying chamber, a heat exchanger and a cold air section at Exhaust air dryer process air duct or the Üm Kunststofftrockner in a cooling air duct, wherein the cold air section between an input for cold air and the heat exchanger is located and wherein the cold air section branches off an engine cooling duct through which the engine can be acted upon with cold air.
  • the cold air section is located in the process air channel.
  • a dryer is designed as an exhaust air dryer, in which the process air is divided into supply air before the drying chamber and exhaust air after leaving the drying chamber.
  • the cold air section is located in the cooling air duct.
  • Such a dryer is designed as a circulating air dryer.
  • the proportion of air flowing from the cold air portion into the engine cooling passage may vary within a wide range.
  • a partial air flow is in Engine cooling channel up to 30%, more preferably up to 20%, of a total flow in the cold air section.
  • the engine cooling passage is preferably a second fan.
  • the engine can then be cooled particularly efficiently.
  • the first blower and the second blower are disposed on opposite sides of the engine.
  • the first blower and the second blower form a double-flow blower.
  • the engine in these embodiments is the engine that is also used to drive the drying chamber.
  • a third fan is located in the cooling air duct, a third fan.
  • the heating for heating the process air may be, for example, an electrical resistance heater and / or a second heat exchanger.
  • an electrical resistance heater and a second heat exchanger are used.
  • the second heat exchanger may be an air-to-air heat exchanger in which warm air from the drying chamber or engine compartment is used to heat the process air, or the condenser of a heat pump.
  • the cooling of the warm, moisture-laden process air essentially takes place in the evaporator of the heat pump, where the heat transferred is used to evaporate a refrigerant used in the heat pump cycle. That's because of Heating evaporated refrigerant of the heat pump is supplied via a compressor to the condenser of the heat pump, where due to the condensation of the gaseous refrigerant heat is released, which is used to heat the supply air before entering the drying chamber (drum).
  • 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.
  • the dryer according to the invention has the advantage that the improved cooling of the motor of the dryer can be operated at a lower temperature compared to a conventional dryer.
  • the risk of a motor stall due to heating is reduced and thus the likelihood of the engine failing altogether.
  • the engine temperature can be maintained at the same level. Because of the active cooling of the motor, it can be made smaller with regard to the laminated core and winding, so that a cost advantage can be achieved without loss of function.
  • the in FIG. 1 The dryer shown has, in a housing 1, a drum rotatable about a horizontal axis as a drying chamber 3, within which drivers 4 are fastened for moving laundry during a drum rotation.
  • Supply air is guided in the process air duct 2 by means of a first blower 6 from the supply air inlet 13 via an air-air heat exchanger 5 and an electric heater 10 through the drum 3.
  • the cold air section 8 designates the part of the process air duct 2 from the inlet air inlet 13 to the air-air heat exchanger 5.
  • an engine cooling duct 23 branches off to the engine 7 in order to cool it by supplying cold air.
  • the process air laden with moisture is conducted in a part of the process air duct 2 designated here as an exhaust duct 9 via the air-air heat exchanger 5 to an exhaust air outlet 12.
  • heated air from the rear of the electric heater 10, i. from the opposite side of the door 14 of the drum 3, passed through the perforated bottom in the drum 3, comes there with the laundry to be dried in contact and flows through the filling opening of the drum 3 to a lint filter 15 within a closing the filling opening door 14th Subsequently, the air flow is deflected in the door 14 down and passed in the exhaust duct 9 on to the air-to-air heat exchanger 5.
  • the moisture absorbed by the process air from the items of laundry condenses there and is collected in a condensate tray (not shown here).
  • the cooled and dehumidified process air leaves the exhaust air duct 9 at the exhaust air outlet 12 as exhaust air.
  • a second blower 25 is located in this embodiment.
  • the drum 3 is in the in Fig. 1 shown embodiment at the rear bottom by means of a pivot bearing and front mounted by means of a bearing plate 16, the drum 3 rests with a brim on a sliding strip 17 on the bearing plate 16 and is held at the front end.
  • the control of the exhaust air dryer takes place via a control device 18, which can be controlled by the user via an operating unit 19.
  • the first blower 6, the second blower 25 and the drum 3 are driven by the same motor 7, the first blower 6 and the second blower 25 being on opposite sides of the engine 7.
  • FIG. 2 shows a vertical section through a dryer, which is designed as a circulating air dryer. In this embodiment therefore accounts for a supply air inlet and an exhaust duct.
  • the cold air section 8 is located in the cooling air passage 22.
  • the cold air section 8 extends in particular from a cooling air inlet 20 to the heat exchanger 5.
  • From the cold air section 8 branches off an engine cooling channel 23 to the motor 7 to cool it by supplying cold air.
  • a third fan 24 conveys cooling air from a cooling air inlet 20 through the air-air heat exchanger 5 to the cooling air outlet 21.
  • the cold air for cooling the engine 6 comes from a separate cooling air duct.
  • the additional use of a third blower 24 in the cooling air duct be useful.
  • the for Fig. 2 not separately explained parts of the dryer correspond to those for Fig. 1 described parts and their functions.

Landscapes

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

Claims (5)

  1. Séchoir avec un bâti (1) ainsi qu'un compartiment de séchage (3) pour des articles à sécher, un canal d'air de traitement (2), dans lequel se trouvent un chauffage (10) destiné au réchauffement de l'air de traitement et une première soufflerie (6), un moteur (7) pour l'entraînement du compartiment de séchage (3), un échangeur de chaleur (5) et une section d'air froid (8) dans le séchoir d'air vicié dans le canal d'air de traitement (2) ou dans le séchoir d'air ambiant dans un canal d'air de refroidissement (22), dans lequel la section d'air froid (8) se trouve entre une entrée (13, 20) pour l'air froid et l'échangeur de chaleur (5), caractérisé en ce qu'un canal de refroidissement de moteur (23) se ramifie à partir de la section d'air froid (8), canal par le biais duquel le moteur (7) peut être alimenté avec de l'air froid.
  2. Séchoir selon la revendication 1, caractérisé en ce qu'une circulation d'air partielle dans le canal de refroidissement de moteur (23) se monte à hauteur de 30 % d'une circulation globale dans la section d'air froid (8).
  3. Séchoir selon l'une des revendications 1 à 2, caractérisé en ce que dans le canal de refroidissement de moteur (23) se trouve une deuxième soufflerie (25).
  4. Séchoir selon la revendication 3, caractérisé en ce que la première soufflerie (6) et la deuxième soufflerie (25) forment une soufflerie à double flux (6, 25).
  5. Séchoir selon la revendication 1, caractérisé en ce que dans le canal d'air de refroidissement (22) se trouve une troisième soufflerie (24), lorsque la section d'air froid se trouve dans le canal d'air de refroidissement.
EP09100118.0A 2008-02-22 2009-02-17 Séchoir doté d'un moteur refroidi Not-in-force EP2093322B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008010519A DE102008010519A1 (de) 2008-02-22 2008-02-22 Trockner mit gekühltem Motor

Publications (2)

Publication Number Publication Date
EP2093322A1 EP2093322A1 (fr) 2009-08-26
EP2093322B1 true EP2093322B1 (fr) 2016-06-15

Family

ID=40626846

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09100118.0A Not-in-force EP2093322B1 (fr) 2008-02-22 2009-02-17 Séchoir doté d'un moteur refroidi

Country Status (4)

Country Link
US (1) US8458924B2 (fr)
EP (1) EP2093322B1 (fr)
DE (1) DE102008010519A1 (fr)
PL (1) PL2093322T3 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2314757B1 (fr) * 2009-10-20 2015-04-22 Candy S.p.A. Appareil domestique doté d'un système amélioré de refroidissement du condensateur.
DE102010000794A1 (de) * 2010-01-12 2011-07-14 BSH Bosch und Siemens Hausgeräte GmbH, 81739 Hausgerät mit einem Gehäuse, welches eine Öffnung hat, und Verfahren zum Betreiben eines solchen
EP2395145A1 (fr) * 2010-06-10 2011-12-14 Miele & Cie. KG Sèche-linge
EP2423371A1 (fr) 2010-08-25 2012-02-29 Electrolux Home Products Corporation N.V. Machine de traitement du linge
KR102063765B1 (ko) * 2013-06-20 2020-03-02 엘지전자 주식회사 폐열 회수수단을 갖는 건조기
EP2980306B1 (fr) * 2014-07-31 2018-01-17 Whirlpool EMEA S.p.A Appareil ménager de séchage avec une section d'admission ameliorée pour le fluide de séchage dans le condensateur
WO2018048401A1 (fr) 2016-09-08 2018-03-15 Hewlett-Packard Development Company, L.P. Écoulement d'air destiné à un moteur
KR102541160B1 (ko) * 2018-08-14 2023-06-07 엘지전자 주식회사 식기세척기
JP7337768B2 (ja) * 2020-09-18 2023-09-04 日立グローバルライフソリューションズ株式会社 洗濯乾燥機
CN114941935A (zh) * 2022-03-03 2022-08-26 蒋明 一种旋转腔体式医疗器械快速干燥装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7321413U (de) * 1974-12-12 Bosch Siemens Hausgeraete Gmbh Wäschetrockner
US3771293A (en) * 1971-12-06 1973-11-13 Gen Electric Louver air cleaner
JPH0236900A (ja) * 1988-07-28 1990-02-06 Sanyo Electric Co Ltd 衣類乾燥機
JPH0271798A (ja) * 1988-09-06 1990-03-12 Matsushita Electric Ind Co Ltd 除湿式衣類乾燥機
JPH02302299A (ja) * 1989-05-17 1990-12-14 Matsushita Electric Ind Co Ltd 除湿式衣類乾燥機
JP3257366B2 (ja) * 1995-09-18 2002-02-18 株式会社日立製作所 衣類乾燥機
DE19743509A1 (de) * 1997-10-01 1999-04-08 Bosch Siemens Hausgeraete Haushalt-Wäschetrockner mit einem Wäschefeuchtigkeit abführenden Prozeßluft-Kreis
SI1516953T1 (sl) * 2003-09-22 2008-02-29 Electrolux Home Prod Corp Gospodinjski stroj za susenje perila kondenzacijskega tipa z nizko glasnostjo
US20080113609A1 (en) * 2006-11-14 2008-05-15 Robertshaw Controls Company Combined Supply and Exhaust Apparatus

Also Published As

Publication number Publication date
PL2093322T3 (pl) 2016-12-30
US8458924B2 (en) 2013-06-11
EP2093322A1 (fr) 2009-08-26
DE102008010519A1 (de) 2009-09-03
US20090211107A1 (en) 2009-08-27

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