EP2738302A2 - Sèche-linge doté d'un circuit de vidange pour l'air de processus - Google Patents

Sèche-linge doté d'un circuit de vidange pour l'air de processus Download PDF

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Publication number
EP2738302A2
EP2738302A2 EP13193700.5A EP13193700A EP2738302A2 EP 2738302 A2 EP2738302 A2 EP 2738302A2 EP 13193700 A EP13193700 A EP 13193700A EP 2738302 A2 EP2738302 A2 EP 2738302A2
Authority
EP
European Patent Office
Prior art keywords
housing
fan
process air
air
dryer
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.)
Withdrawn
Application number
EP13193700.5A
Other languages
German (de)
English (en)
Other versions
EP2738302A3 (fr
Inventor
Ralf Dr. Bömmels
Oliver Despang
Holger Hennig
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
Publication of EP2738302A2 publication Critical patent/EP2738302A2/fr
Publication of EP2738302A3 publication Critical patent/EP2738302A3/fr
Withdrawn legal-status Critical Current

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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
    • D06F58/10—Drying cabinets or drying chambers having heating or ventilating means
    • 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 invention relates to a tumble dryer, comprising a circulating or closed circuit for process air (“process air circuit”) housed in a housing, which circuit has at least one area subject to leakage.
  • process air circuit process air
  • clothes dryer of the type mentioned above which have a fan for moving the process air in the process air circuit.
  • an overpressure is generated on the blower in the process air circuit, a negative pressure on the suction side.
  • process air can escape from the process air circuit into the interior of the tumble dryer.
  • the front drum seal and the rear drum seal have a significant share of the total leakage. Due to the escape of the usually moist-warm process air through the at least one leakage-prone area, energy is lost, which reduces efficiency.
  • the moist-warm process air can increase corrosion in the tumble dryer and cause moisture damage in an environment of the installation site.
  • JP-A-2009 291226 For example, a clothes dryer with a compressor heat pump is known, which has a blower for blowing the compressor or compressor. Operation of the fan prevents condensation moisture from forming on the compressor or subsequent pipe sections.
  • a housing of the heat pump dryer has for this purpose air intake slots and Heilauslassschlitze. The moist air exiting through the air outlet slots can cause increased moisture damage in the vicinity of the installation site.
  • a tumble dryer having a circulating circuit for process air housed in a housing, which circuit has at least one area subject to leakage, wherein an overpressure can be generated on the outside at least one area subject to leaks.
  • a leakage-prone area can leak process air in the process air circuit under overpressure.
  • the overpressure generated on the outside of the leaking area reduces or even completely compensates for a pressure difference so that the process air does not escape from the circuit.
  • the overpressure is thus targeted to reduce, in particular prevention, a leakage of process air from the (process air) circuit generated.
  • the tumble dryer may in particular be a condensation tumble dryer.
  • a condensation clothes dryer can be understood in particular to mean a clothes dryer which specifically condenses moist air which has absorbed its moisture from laundry to be dried.
  • the circulating cycle for process air is a closed process air cycle, in which the process air is typically moved by a process air blower.
  • An associated tumble dryer is also referred to as a recirculating tumble dryer.
  • the process air circuit also often has a heater for heating the process air from overflow of the laundry to be dried.
  • the housing is pressure-tight.
  • the housing is in particular a pressure-tight housing around at least a region subject to leaks, so that a suitable overpressure can be produced with little effort. It is a particularly simple design that the entire housing is pressure-tight.
  • the pressure tightness is such that a sufficiently high overpressure can form on the leaking area in order to significantly suppress or even completely prevent the escape of the process air.
  • the fan can also be referred to as fan or blower or designed accordingly.
  • the circuit for process air has a laundry drum and at least one area subject to leaks is a drum seal of the laundry drum.
  • a front drum seal and a rear drum seal may be leaking.
  • the laundry drum is typically pneumatically or air-technically connected on two sides to a recirculating air channel leading to the process air.
  • the condenser and the heater are also connected to the recirculating air duct or accommodated therein.
  • the clothes dryer also has a (device) housing enclosing these elements. To reduce or eliminate an outflow of process air through the drum seal (s), the overpressure can be generated at least in a region of the housing having the laundry drum or its seal (s). Other areas may not be pressurized with compressed air.
  • the overpressure by means of at least one fan and at least one throttle can be generated, which fan suction side is connected to an environment of the housing and the pressure side with an interior of the housing, and which throttle connects the interior with the environment directly.
  • the fan may be a dedicated or dedicated fan.
  • an overpressure can be generated substantially everywhere in the interior of the housing.
  • the overpressure may also be made differently, for example by means of an air compressor or an air pump.
  • the throttle may be an opening in the housing, in particular a bore, a slot or a nozzle, and forms in cooperation with the fan, a flow equilibrium of the fan from the fan into the housing and through the throttle back out of the housing flowing air, in which the desired overpressure develops in the housing.
  • the throttle can also be completely or partially closed by a flap or the like.
  • a role plays thereby that the requirement of the avoidance of a leakage from the cycle of the process air sets a lower threshold for the overpressure to be achieved, with which the pressure difference over the considered leak disappears, but no upper threshold. If the overpressure rises above the said lower threshold, it comes at the considered leak to an entry of air from the environment into the circulation until the re-entry of a pressure equalization, to a leakage from the circulation but it can not come.
  • the fan is permeable to air in the stationary or non-activated or non-running state. So, if no overpressure is needed, air can be exchanged with the environment through the fan.
  • At least one fan is accommodated in the housing and is connected on the suction side by means of an intake duct with the environment.
  • the fan can be brought particularly close to a component or area to be ventilated and / or pressurized by overpressure.
  • At least one fan is a fan which is inserted into the housing and blows inwards or into the interior, also referred to as "housing fan".
  • the tumble dryer has a heat pump and the fan is a cooling fan for ventilating a drive of the heat pump. This has the advantage that a single fan can fulfill several functions and the tumble dryer is inexpensive to produce.
  • the heat pump is a compressor heat pump whose structure is basically well known and typically has as drive a compressor or compressor and further a condenser or condenser, an evaporator and a relaxation device, which are interconnected in a coolant circuit.
  • a compressor heat pump whose structure is basically well known and typically has as drive a compressor or compressor and further a condenser or condenser, an evaporator and a relaxation device, which are interconnected in a coolant circuit.
  • other types of heat pumps are available, such as a Stirling heat pump or a Vuilleumier heat pump.
  • the housing has a closable flap. This allows in the closed state, a large-scale pressure build-up and in the open state, both an exchange of air with the environment or the outer space and a stronger air flow in the interior of the housing outside the process air circuit, e.g. generated by cooling fans.
  • At least one fan is adapted to run continuously during a drying operation.
  • starts of the fan which reduce a lifetime and are also particularly noticeable by a user, prevented.
  • the pressure can be built up and reduced faster than is possible by starting and stopping the fan.
  • the tumble dryer is adapted to stop the housing fan for cooling the drive of the heat pump and / or to open the closable flap.
  • an increased air flow in the interior of the housing is allowed, causing a more effective cooling of the drive.
  • a supply of cool air from the environment and / or removal of warm air from the housing is also allowed.
  • the drive of the heat pump may be assigned to determine its temperature, a temperature sensor, which delivers its measurement data, for example to an electronic control of the tumble dryer.
  • the tumble dryer is in particular a household appliance.
  • the tumble dryer may be a pure tumble dryer or a combi appliance, e.g. Washer dryer, be.
  • FIGURE shows a sketch of a circulating air laundry drying apparatus in the form of a tumble dryer 1.
  • the clothes dryer 1 is a front loader with a rotary laundry drum 2 as a laundry treatment room.
  • the laundry drum 2 is pneumatically or pneumatically connected to a recirculating air duct 3 on both sides.
  • the circulating air duct 3 serves for the closed guidance of process air P from and to the laundry drum 2.
  • a fan 4 for conveying or moving the process air P is also present.
  • the heat pump 5 to 8 further comprises, in basically known manner in a cooling circuit connected in series a compressor or compressor 6, a condenser or condenser 7, and a relaxation device 8, e.g. in the form of an expansion valve.
  • the condenser 7 is thermally coupled to the recirculating air duct 3 and used to heat the previously condensed process air P before re-introduction into the laundry drum 2.
  • the compressor 6 serves as a drive for generating a heat flow from the evaporator 5 to the condenser 7. In this way, a Cooling and heating of the process air achieved in a particularly energy-saving manner.
  • a cooling fan 9 is present, which inflates the compressor 6, if this exceeds a predetermined temperature value.
  • the cooling fan 9 is connected on the suction side via an air duct 10 with the environment A.
  • the housing 13 is designed so that it at least the laundry drum 2 in the region of the seals 11, 12 encloses airtight.
  • Other areas of the housing 13, for example comprising a bottom group or an upper-side area for accommodating an electronics 14, may eg be connected to the environment by ventilation, for example by cooling slots (see FIG.
  • a housing fan 15 may additionally or alternatively be present in the housing 13 or an associated housing wall, which blows air from the environment A into the housing 13 or into its interior 16.
  • the case fan 15 may run when maintenance of the overpressure in the housing 13 is desired, and stand still and thus permeable to air when cooling of the compressor 6 is desired. This behavior is based on the fact that a cooling of the compressor to be cooled 6 is stronger when the housing 13 is not pressurized and air can escape from it.
  • the housing 13 may additionally or alternatively one with a flap 17 o.
  • closable opening 18 may be present.
  • the flap 17 may close the opening 18 in a pressure-tight manner if a maintenance of the overpressure in the housing 13 is desired, and leave the opening 18 open if cooling of the compressor 6 is desired.
  • cooling fan 9, the case fan 15 and / or the flap 17 may be controllable by the electronics 14, in particular selectively driven and stopped or opened or closed, e.g. via dashed control lines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Treatment Of Fiber Materials (AREA)
EP13193700.5A 2012-11-30 2013-11-20 Sèche-linge doté d'un circuit de vidange pour l'air de processus Withdrawn EP2738302A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012222018.6A DE102012222018A1 (de) 2012-11-30 2012-11-30 Wäschetrockner mit umlaufendem Kreislauf für Prozessluft

Publications (2)

Publication Number Publication Date
EP2738302A2 true EP2738302A2 (fr) 2014-06-04
EP2738302A3 EP2738302A3 (fr) 2016-04-13

Family

ID=49585328

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13193700.5A Withdrawn EP2738302A3 (fr) 2012-11-30 2013-11-20 Sèche-linge doté d'un circuit de vidange pour l'air de processus

Country Status (2)

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EP (1) EP2738302A3 (fr)
DE (1) DE102012222018A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017152947A1 (fr) * 2016-03-08 2017-09-14 Arcelik Anonim Sirketi Appareil de traitement de linge avec protection contre la corrosion et sécurité améliorées

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015208766A1 (de) 2015-05-12 2016-11-17 BSH Hausgeräte GmbH Waschtrockner und Verfahren zum Betreiben eines Waschtrockners

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009291226A (ja) 2008-06-02 2009-12-17 Panasonic Corp 乾燥装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3034221A (en) * 1957-10-11 1962-05-15 Gen Motors Corp Clothes drier having absorbent bed
US3637224A (en) * 1969-02-27 1972-01-25 Fedders Corp Annular sealing ring
DE102007013997A1 (de) * 2007-03-23 2008-09-25 BSH Bosch und Siemens Hausgeräte GmbH Kondensationstrockner und Verfahren zum Betreiben eines Kondensationstrockners
KR101351045B1 (ko) * 2007-08-06 2014-01-10 엘지전자 주식회사 의류처리장치
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
EP2527526B1 (fr) * 2011-05-27 2014-07-23 Electrolux Home Products Corporation N.V. Sèche-linge à tambour rotatif

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009291226A (ja) 2008-06-02 2009-12-17 Panasonic Corp 乾燥装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017152947A1 (fr) * 2016-03-08 2017-09-14 Arcelik Anonim Sirketi Appareil de traitement de linge avec protection contre la corrosion et sécurité améliorées

Also Published As

Publication number Publication date
EP2738302A3 (fr) 2016-04-13
DE102012222018A1 (de) 2014-06-05

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