EP0191729A2 - Machine à laver - Google Patents

Machine à laver Download PDF

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Publication number
EP0191729A2
EP0191729A2 EP86810049A EP86810049A EP0191729A2 EP 0191729 A2 EP0191729 A2 EP 0191729A2 EP 86810049 A EP86810049 A EP 86810049A EP 86810049 A EP86810049 A EP 86810049A EP 0191729 A2 EP0191729 A2 EP 0191729A2
Authority
EP
European Patent Office
Prior art keywords
drum
washing machine
machine according
laundry
water
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.)
Granted
Application number
EP86810049A
Other languages
German (de)
English (en)
Other versions
EP0191729A3 (en
EP0191729B1 (fr
Inventor
Jakob Huber
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT86810049T priority Critical patent/ATE46928T1/de
Publication of EP0191729A2 publication Critical patent/EP0191729A2/fr
Publication of EP0191729A3 publication Critical patent/EP0191729A3/de
Application granted granted Critical
Publication of EP0191729B1 publication Critical patent/EP0191729B1/fr
Expired 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
    • D06F17/00—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid

Definitions

  • the invention relates to an automatic washing machine, in particular for washable textiles, which is set up for carrying out at least one cleaning and one rinsing process and, if appropriate, one spinning and one drying process, with a drum rotatably arranged in a housing for receiving the laundry, which with the circumferentially distributed openings are provided for the inflow and outflow of the washing water, to which a detergent is added during the cleaning process.
  • the washing machines currently customary mostly have a lying washing drum which rotates periodically first in one direction and then in the other, the laundry being drawn through the water in the drum. As a result, it is heavily tumbled and even rolled up into lumps. It rubs off the holes in the washing drum, especially if it is embroidered, and if these are also sharp-edged, cracks or even holes in the laundry can easily occur. So-called gentle gears with slower rotary movements were therefore introduced, but the risk of clumping and chafing remains. Occasionally, in order to compensate for the slower movement, the detergents are added in larger quantities or those with a higher concentration, but the laundry is thereby attacked to an increased extent and the environment is polluted even more with the waste water.
  • the invention has for its object to provide an automatic washing machine in which the laundry is no longer damaged on the drum wall and which is also suitable for other laundry.
  • the automatic washing machine allows a new, improved washing process to be carried out by holding the laundry in the drum during the entire cleaning and rinsing process, which washing water flows through continuously during the cleaning and rinsing process.
  • a clumping of the laundry is prevented, which is now cleaned more uniformly and therefore more quickly, as a result of which less detergent is required and the time for the entire washing process and the energy requirement or expenditure are reduced.
  • abrasion of the laundry is avoided, which enables cleaning delicate and even fragile laundry.
  • a spinning and / or drying process can end the washing process, for which all switching and dosing processes can be controlled electronically and set using a selectable time program.
  • the grid basket 2 is inserted and conveniently fastened therein.
  • the lattice basket is divided by lattice walls 3 in such a way that layers 4, which are filled with laundry in the drawing and parallel to the (not shown) axis of rotation of the drum, between which a laundry-free space 5 is left out, as can be seen more clearly from FIG. 2.
  • the axis of rotation can be arranged horizontally or vertically and thus the drum with the mesh basket lying or standing.
  • the drum 1 with the mesh basket 2 is surrounded by the water-tight and airtight housing 6, which has the inlet 7 and the outlet 8.
  • the space 9 between the drum 1 and the housing 6 is divided by the walls 10.
  • the entire washing machine is covered with the jacket 11.
  • the recirculation line 12 extends from the outlet 8 to the inlet 7 of the housing 6, into which the pump 13 and the additional heating device 14, e.g. an electrically or gas-heated heat exchanger are switched on.
  • the heating device 15 is built into the housing of the pump 13, preferably around its flow channel, in the form of a heating coil or heating elements, which can likewise be heated with gas or electrically.
  • the outlet line 16 branches off from the recirculation line 12 and is equipped with the outlet valve 17 and a coarse filter 18 connected upstream of this valve.
  • the heat exchanger 19 which also has the function of a boiler and is therefore additionally electrically or gas-heated, is flowed through on the one hand by wastewater which flows out of the housing 6 through line 20, and on the other hand by fresh water which flows in through line 21.
  • the line 22 branches off from the fresh water line 21 and leads to the containers 23, 24, 25 for powdered detergent.
  • a container 26 for liquid detergent can optionally or additionally be provided.
  • the heat exchanger 27 is flowed through on the one hand by the exhaust air, which emerges from the housing 6 as a partial flow or as a whole air flow into the surrounding atmosphere, as the arrows 28 illustrate, on the other hand by fresh air as a replacement for the exhaust air, which flows in through the line 29 and via the Line 30 opens into the recirculation line 12.
  • the lattice basket 2 shows the empty lattice basket 2.
  • the mutually parallel layers 4 formed by the grid walls 3 for the items to be washed with the spaces 5 free of items to be washed in between are clearly visible.
  • the wire mesh baskets have more or fewer wire mesh walls and, optionally, no laundry-free spaces.
  • the laundry is filled (in the drawing) from above, which can take place both in the assembled state inside the drum 1 and outside the washing machine.
  • Fig. 3 shows the drum 1, which is provided with openings 31 distributed over the circumference for the inlet and outlet of the washing water.
  • the mesh basket 2 can be inserted into the drum and fastened in it in rotation.
  • the floating shaft stub 32, on which the paddle wheel 33 is seated, is connected to the drum 1.
  • deflection blades attached directly to the drum can also be provided. The initiation of the rotary motion is explained below.
  • the drum 1 can be supported on both sides.
  • powdered detergent is flushed out of the container 23 or, if the washing machine is set up for such a supply, liquid detergent is injected from the container 26, which can be done by electrical, mechanical or hydraulic means.
  • the pump 13 is started, which conveys the washing water from the housing outlet 8 through the recirculation line 12 to the housing inlet 7.
  • the washing water would be easily heated, but is not common and is usually not necessary.
  • the returned wash water entering at 7 is distributed in the space 9 between the drum 1 and the housing 6 and flows through the laundry to the outlet 8. So that it does not flow through the space 9 to the outlet 8 bypassing the laundry, these are Walls 10 provided. So already during prewashing, as in all subsequent processes, the items to be washed stand still relative to the drum and only the wash water is passed through.
  • the rotating mechanism for the drum 1 is also switched on.
  • the rotary movement can take place continuously, preferably slowly, in order to protect the laundry, to save energy and to give the wash water time to flow reliably through the laundry.
  • Another advantageous possibility is to rotate the drum only intermittently, with longer breaks in between.
  • the drum is first placed in such a way that the laundry layers are perpendicular to the general direction of flow of the washing water through the drum. After a pre-programmable period of time, the drum is rotated by 180 ° so that the wash water hits the laundry from the opposite side. This process can be repeated any number of times. This results in an excellent cleaning effect even during prewashing.
  • the dirty water is drained off via the recirculation line 12 into the drain line 16 when the pump is at a standstill.
  • the coarse filter 18 is provided in order to catch larger pieces which may be carried along and which could block or even damage the valve.
  • the prewashed goods in particular laundry, can then be spun out in order to remove as much of the dirty water as possible.
  • the drum must run at a much higher speed than during pre-washing.
  • the drive could of course be carried out with its own small motor, but there are other options, namely the available hydraulic means, which makes a motor unnecessary.
  • the paddle wheel 33 connected to the drum 1 is provided, which e.g. is pressurized with water. All that is required is a residual amount of dirty water left in the housing, which is sucked in by the pump 13 and sprayed onto the paddle wheel. Full pressure is used for the fast rotary movement, while the supply line to the paddle wheel is throttled for the slow rotary movement. Extraneous water can also be used for this if it is available in sufficient quantity and under sufficiently high pressure.
  • the fresh water in the heat exchanger 19, which serves as a boiler is heated by external heating.
  • hot water is now let in from the heat exchanger 19 into the housing 6 until the level controller switches off the supply.
  • powder detergent is flushed out of the container 24 or liquid detergent is injected out of the container 26.
  • the pump 13 sucks the washing water out of the housing 6 and conveys it back into the housing via the recirculation line 12, where it flows through the laundry and is sucked out again at the outlet 8. On the way through the recirculation line, it is heated to the desired temperature in the additional heating device 14 or — depending on which heating is provided — in the heating device 15 at the pump and is also kept at this temperature during the cleaning process.
  • setpoint curves can be set for different types of laundry or laundry and different degrees of soiling the necessary concentration of the detergent is set up and entered into the washing machine. These curves, plotted over time, show a decreasing, towards zero course.
  • the actual value of the concentration of the detergent in the washing water is measured at preprogrammed intervals, which in a known manner, e.g. with two electrodes acting as sensors, can be compared with the specified target value at this point in time and adapted to the target value by adding fresh detergent, for which the liquid detergent is particularly suitable. Due to the course of the curve towards zero, practically all of the detergent entered is used up in the process described. The cleaning process will end when the given one. Time of the selected curve has elapsed or after a specified minimum duration of the cleaning process the measured actual value exceeds the specified target value.
  • the detergent addition can also be controlled in other ways.
  • the actual concentration value is measured from time to time and brought to a constant setpoint by adding detergent. As soon as the difference between the setpoint and actual value falls below a specified minimum, the cleaning process is ended.
  • the detergent consumption in the second-mentioned dimensioning method is greater than in the previous case, but is still much smaller than usual when working with a constant amount, which was often overdosed, in order to obtain reliably clean laundry.
  • Excessive contamination of the washing water during the cleaning process can be countered by temporarily or continuously draining a limited amount of the washing water and replacing it with fresh water from the heat exchanger 19.
  • This wastewater can be discharged through the drain line 16, but it is more economical to pass it through the heat exchanger 19, where it gives off its heat to the fresh water, and then to discharge it through the line 20.
  • all of the dirty water is drained off, which is preferably carried out through the heat exchanger 19 in order to at least partially utilize its heat in this way.
  • the used warm water is advantageously drained slowly, which can be done with additional valves or with a small centrifugal pump.
  • the laundry can also be spun before the washing process starts.
  • Fresh water is admitted from the heat exchanger 19 into the housing 6, which was heated by the previously drained wastewater, possibly by additional external heating.
  • the level controller controls the amount of fresh water that has run in, then shuts off the supply and gives the impulse for starting the pump 13, which presses the rinsing water through the laundry, sucks it off at the housing outlet 8 and conveys it back to the housing inlet 7 via the recirculation line 12. In this way it can be heated further by the heating devices 14 or 15, but depending on the items to be washed, little heated or even cold rinse water can suffice.
  • the drum 13 is placed in such a way that the laundry layers are positioned perpendicular to the general direction of flow through the drum. From time to time the drum is rotated through 180 0, so that now meets the rinse water from the opposite side to the washing material layers. Also, a random rotation of the drum only by 90 0 with direct fürströmitzkeit for the rinse water through the waschgutinate areas 5 can sometimes be advantageous. An additional supply of washing water through a supply line that opens into the housing 6 near the highest point can further increase the rinsing effect.
  • the rinsing process is ended after a pre-programmed period of time. However, the remaining concentration of detergent can also be measured, the wash water drained off if necessary and a further rinsing process initiated. In the last rinsing process, it is often useful to rinse a plasticizer out of the container 25 into the water. Intermediate spinning is also possible and increases the washing effect. In this way, a really clean and chemical-free laundry is achieved, which is particularly desirable and valued for laundry. In the case of items that are particularly difficult to treat, the cleaning and rinsing process can alternately be repeated two or even several times.
  • the water is drained and the laundry may also be spun.
  • a drying process can be connected, which is preferably done with heated air. This is pressed through the laundry, a partial flow can also be fed in from below, for example to loosen up laundry, whereby it absorbs moisture, which of course is only possible to a certain degree of saturation. It must therefore be renewed from time to time or continuously.
  • the pump can be constructed in such a way that it can also be operated at a much higher speed than when pumping water. It therefore acts like a fan and is suitable for conveying air.
  • the moist air is discharged, for example, after a predetermined period of time and after a possible brief flushing phase replaced by fresh air, which is heated on its way through the recirculation line 12.
  • An advantageous variant of this consists in that part or all of the moist warm air flows out through the heat exchanger 27, as indicated by the arrows 28. This exhaust air is replaced by fresh air, which flows through the line 29 to the heat exchanger and, after heating therein, reaches the recirculation line 12 through the line 30.
  • Another way to achieve dry air is to guide the humid air - similar to an air conditioning system - along its circuit via the artificially supercooled surfaces of another (not shown) heat exchanger, where the water vapor present in the air is partly condensed out.
  • the condensate is drained and there is no need to renew the air.
  • the energy required for this process which is particularly advantageous for large washing machines, is generated in part as heat that can be used to subsequently heat the air.
  • the drum 1 is rotated continuously or intermittently even during the drying process.
  • the washing process described can be varied and combined practically as desired in its individual phases.
  • an electronic time program can be selected to adapt the washing process to the type and sensitivity, the degree of soiling of the items to be washed Air, the dosage of detergents, the switching on and dimensioning of the heaters and the like, together controls.
  • the construction of the washing machine according to the invention allows the grid basket to be filled outside the machine and placed in a separate kettle filled with water for soaking.
  • this can also be done in the washing machine itself by filling the housing 6 with water according to the first step of the prewash program. Soaking shortens the washing time in the machine, in particular prewashing, which can even be omitted entirely, which protects the laundry even more. It is advantageous to do the soaking during the day and the actual washing process with the cheap night electricity.
  • the washing machine is used a lot, as is the case, for example, in laundries, then it is advisable to use two wire baskets. While the laundry in one basket is being washed, the laundry in the second basket is soaked, and so on. The wash cycles can then follow one another much more quickly, and there is then often hardly enough time available for heating the fresh water in the heat exchanger 19. Especially for this case, but also in general, it is advantageous to use the full electrical connected load when there is a small need for electrical energy during the washing process and to store it as available heat in the heat exchanger 19 serving as the boiler.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Centrifugal Separators (AREA)
EP86810049A 1985-02-12 1986-01-27 Machine à laver Expired EP0191729B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86810049T ATE46928T1 (de) 1985-02-12 1986-01-27 Waschmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH615/85A CH667298A5 (de) 1985-02-12 1985-02-12 Waschautomat.
CH615/85 1985-02-12

Publications (3)

Publication Number Publication Date
EP0191729A2 true EP0191729A2 (fr) 1986-08-20
EP0191729A3 EP0191729A3 (en) 1987-08-26
EP0191729B1 EP0191729B1 (fr) 1989-10-04

Family

ID=4191120

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86810049A Expired EP0191729B1 (fr) 1985-02-12 1986-01-27 Machine à laver

Country Status (6)

Country Link
US (1) US4727733A (fr)
EP (1) EP0191729B1 (fr)
AT (1) ATE46928T1 (fr)
CA (1) CA1258381A (fr)
CH (1) CH667298A5 (fr)
DE (1) DE3666055D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2632329A1 (fr) * 1988-06-07 1989-12-08 Ciapem Procede de lavage du linge de laine, et machine a laver le linge mettant en oeuvre ce procede

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH688556A5 (it) * 1993-12-09 1997-11-14 Franco Carloni Apparecchio elettrodomestico per lavare e/o asciugare utilizzante l'acqua calda dell'impianto centralizzato circolante in serpentine.
US6826933B2 (en) * 2002-02-06 2004-12-07 Maytag Corporation Dual use detergent dispenser
WO2007013327A1 (fr) * 2005-07-28 2007-02-01 Sharp Kabushiki Kaisha Machine a laver / seche-linge a tambour
JP4022239B1 (ja) * 2006-08-10 2007-12-12 シャープ株式会社 洗濯乾燥機およびこの制御方法
DE102007011118A1 (de) 2007-03-07 2008-09-11 BSH Bosch und Siemens Hausgeräte GmbH Gerät zum Waschen und Trocknen
US8490439B2 (en) * 2011-09-30 2013-07-23 Electrolux Home Products, Inc. Water recirculation and drum rotation control in a laundry washer
AT520264B1 (de) * 2017-06-29 2019-05-15 Helena Flavia Khevenhueller Metsch Frontlader-Waschmaschine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR769312A (fr) * 1933-03-01 1934-08-24 Machine à laver le linge
US2076011A (en) * 1934-09-17 1937-04-06 Harry E Surface Washing machine
GB616160A (en) * 1944-09-14 1949-01-18 Marcel Beucler Improvements relating to laundry machines
FR63408E (fr) * 1952-10-17 1955-09-13 Machine à laver
FR1102267A (fr) * 1954-06-10 1955-10-18 Machine à laver le linge
FR1364698A (fr) * 1963-05-13 1964-06-26 Procédé et appareil pour le traitement de tissus, notamment pour le lavage du linge

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1460400A (en) * 1923-07-03 Dijjhwashihg apparatus
DE254791C (fr) *
US322710A (en) * 1885-07-21 Washing-machine
US1869510A (en) * 1929-06-18 1932-08-02 Vernon Ltd R Washing machine
GB355079A (en) * 1930-09-25 1931-08-20 Simon Henri Stoffel Improvements in and relating to washing machines
US2498734A (en) * 1948-08-06 1950-02-28 Louie P Bozanich Washing and drying machine with fluid impeller
US2689413A (en) * 1953-01-05 1954-09-21 Kachuck Mike Dry cleaning apparatus
US3410117A (en) * 1967-04-07 1968-11-12 Harry N. Elam Cap-cleaning apparatus
US3401834A (en) * 1967-04-17 1968-09-17 Gen Motors Corp Laundry conditioner dispenser system
US3645669A (en) * 1969-02-28 1972-02-29 Gerhard Rausch Method and arrangement for testing the liquid in washing machines
DK144769C (da) * 1979-12-06 1982-12-13 Voelund Vaskerimaskiner Tromlevaskemaskine med varmeveksler

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR769312A (fr) * 1933-03-01 1934-08-24 Machine à laver le linge
US2076011A (en) * 1934-09-17 1937-04-06 Harry E Surface Washing machine
GB616160A (en) * 1944-09-14 1949-01-18 Marcel Beucler Improvements relating to laundry machines
FR63408E (fr) * 1952-10-17 1955-09-13 Machine à laver
FR1102267A (fr) * 1954-06-10 1955-10-18 Machine à laver le linge
FR1364698A (fr) * 1963-05-13 1964-06-26 Procédé et appareil pour le traitement de tissus, notamment pour le lavage du linge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2632329A1 (fr) * 1988-06-07 1989-12-08 Ciapem Procede de lavage du linge de laine, et machine a laver le linge mettant en oeuvre ce procede

Also Published As

Publication number Publication date
US4727733A (en) 1988-03-01
EP0191729A3 (en) 1987-08-26
CH667298A5 (de) 1988-09-30
DE3666055D1 (en) 1989-11-09
ATE46928T1 (de) 1989-10-15
EP0191729B1 (fr) 1989-10-04
CA1258381A (fr) 1989-08-15

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