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
  • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
  • D06F35/005—Methods for washing, rinsing or spin-drying
  • D06F35/006—Methods for washing, rinsing or spin-drying for washing or rinsing only
• • 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
  • D06F23/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry 
  • D06F23/06—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry  and rotating or oscillating about an inclined axis
• • 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
  • D06F37/02—Rotary receptacles, e.g. drums
  • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
  • D06F37/06—Ribs, lifters, or rubbing means forming part of the receptacle

Definitions

• the invention is based on a method for operating a programmable washing machine with a drum rotating in a fixed tub, with an inclined axis of rotation rising in the direction of the loading opening and with scooping devices for the liquor attached to the drum, the scooping capacity of which depends on the direction of rotation of the drum and which in a preferred direction of rotation, the scooping direction, should bring about uniform wetting of the laundry with the lye, during which the drum is operated in alternating directions of rotation and with a rotational speed that changes as a function of the direction of rotation for a limited period of time in the two directions can be varied.
• washing machines have been operated for a long time, ie. H. the laundry drum rotates with a temporarily changing direction of rotation.
• a control of the reversing operation is known from DE 43 10 595 A1, with which a high degree of efficiency is achieved when adapted to the specially designed washing machine. Thereafter, provision is made to set the first speed such that the effect of the scooping devices attached to the drum jacket is greatest in the scooping direction. In the opposite direction, the drum is operated at a speed which is increased several times in order to accelerate the exchange of the wash liquor during this period.
• the choice of speeds is determined depending on the load and on the design features of the washing machine such as drum diameter and scooping capacity of the scooping devices.
• the length of the time periods for operation in the two directions of rotation can also be varied.
• Washing machines with an inclined drum axis that rises to the front are also known from the prior art (DE 198 59 571 A1). Combined with A correspondingly adapted housing in the area of the loading opening results in improved visibility into the drum interior and easier access to the laundry for the user.
• Washing machines with inclined systems also offer the opportunity to save water, energy and detergent, since due to the inclination of the drum, the laundry in the deep area of the inclined drum already comes into contact with lye, even if only small amounts of water have been introduced.
• a washing machine which has drivers arranged on the drum jacket, which are arranged obliquely to the direction of rotation.
• the inclined arrangement of the drivers means that the laundry is conveyed forward in a preferred direction of rotation in the direction of the loading opening.
• the items to be washed are distributed over the entire drum surface, similarly to the horizontally aligned axis of rotation.
• the drivers are designed as scooping devices and are curved along their extension. In order to be able to absorb as large a quantity of wash liquor as possible, the drivers are particularly large in volume at the lowest point of the drum.
• the bottom of the drivers is designed wider in the area of the scoop openings, and the bottom tapers in the direction of the loading opening.
• the ridge height of the driver is higher towards the loading opening than in the area of the scoop openings.
• the laundry can be moistened quickly and evenly. It is also possible to de to bring the mechanical energy necessary for washing success into the laundry.
• the invention has for its object to provide a method for operating the washing machine with an inclined drum axis and reversing operation according to the introductory description, in which the advantages of inclined drum systems are fully exploited and at the same time good washing results can be achieved with approximately the same washing duration. Furthermore, it is the aim of the invention to implement the method with the simplest possible control engineering means and to put a comparatively low load on the drive system.
• this object is achieved in that the drum is operated during the entire wet treatment phase in the scooping direction at time intervals which are approximately of the same length and are characterized by a uniform target speed of the drum, and the speed and the duration of the time intervals in the counter-scooping direction depending on Progress of the wet treatment phase can be varied at which
• ⁇ is located in a first phase, the power phase, the rotational speed of the drum in scooping direction below the washing speed and the duration of the time interval in counter-scooping direction is substantially shorter than in scooping direction,
• the washing phase, the rotational speeds of the drum are the same as in the mains phase, but the duration of the time interval in counter-scooping direction extended in comparison with the mains phase, and
• a third phase the rinsing phase, the speed of the drum in the scooping direction is the same as that in the net and in the washing phase, but in the counter-scooping direction it is significantly higher than a lay-on speed at which the laundry lies against the drum shell, and the The duration of the time interval in the counter-scooping direction is significantly shorter than in the washing phase.
• wetting phase and the washing phase change several times during the wet treatment phase. This ensures that the laundry is always well flooded during the washing process. This makes dirt removal more effective.
• the duration of the time interval in the scooping direction automatically via a device for detecting the loading of the drum with laundry. This can be done automatically by the control if there is a corresponding measurement data acquisition.
• output signals of a timer can advantageously be provided in the program control device for controlling the drum drive, the duration of which can be set as a function of program stages and / or of process parameters measured during the wet treatment phase.
• the diagram shows the time course of a wet treatment phase, which is divided into three functionally different sections N, W and S.
• a first section N at the beginning of the wet treatment phase it is important that the laundry, which is generally introduced dry into the drum, is wetted as quickly as possible; therefore this section is called the "mains phase".
• the reversing rhythm according to the invention takes this task into account by moving the drum in the scooping direction at a speed which depends on the constructive training of the driver designed as a scoop for the scooping performance and thus for the irrigation of the laundry in the drum is optimal.
• the speed is in any case below the speed that has been found to be optimal for washing.
• the optimal duration of the time intervals in which the drum rotates in the scooping direction depends on the scooping capacity and the loading of the drum.
• the rotation in the opposite direction is used in the mesh phase to better mix the laundry in the drum.
• the rotation time for this can be chosen to be very short.
• This operation of the washing machine makes it possible to moisten the laundry evenly in a very short time in the mains phase.
• the washing phase the washing effect is to be increased by intensively flooding the laundry and by absorbing mechanical energy.
• the invention corresponds to this in a simple manner in that the rotational speeds of the drum are the same as in the network phase, but the duration of the time interval in the counter-scooping direction is extended in comparison to the network phase.
• the soiled wash liquor in the wash ware should be quickly replaced with fresh wash liquor. This is achieved by optimal turning in the scooping direction and a short change in the opposite direction at high speed.
• the speed of rotation of the drum in the scooping direction is the same as that in the wetting and washing phase, but in the counter-scooping direction it is significantly above a lay-on speed at which the laundry lies against the drum shell.
• the duration of the time interval in the counter-scooping direction is significantly shorter than in the washing phase.

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Control Of Washing Machine And Dryer (AREA)

Priority Applications (1)

Applications Claiming Priority (3)

Publications (2)

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Family Applications (1)

Country Status (8)

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• 2001
  • 2001-07-26 DE DE10136519A patent/DE10136519B4/de not_active Expired - Fee Related
• 2002
  • 2002-05-22 DE DE50208428T patent/DE50208428D1/de not_active Expired - Lifetime
  • 2002-05-22 CN CNB028147642A patent/CN1302169C/zh not_active Expired - Fee Related
  • 2002-05-22 ES ES02748715T patent/ES2274061T3/es not_active Expired - Lifetime
  • 2002-05-22 AT AT02748715T patent/ATE342393T1/de not_active IP Right Cessation
  • 2002-05-22 WO PCT/EP2002/005625 patent/WO2003010380A1/fr active IP Right Grant
  • 2002-05-22 KR KR1020047001106A patent/KR100802256B1/ko not_active IP Right Cessation
  • 2002-05-22 EP EP02748715A patent/EP1417369B1/fr not_active Expired - Lifetime
• 2004
  • 2004-01-26 US US10/765,585 patent/US6868573B2/en not_active Expired - Fee Related

Non-Patent Citations (1)

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