EP1050616A1 - Procédé et machine à laver pour essorer du linge - Google Patents

Procédé et machine à laver pour essorer du linge Download PDF

Info

Publication number: EP1050616A1
Authority: EP; European Patent Office
Prior art keywords: speed; tub; drum; liquid; steepness
Prior art date: 1999-04-26
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

EP00108689A

Other languages

German (de)

English (en)

Other versions

EP1050616B1 (fr

Inventor

Ingo Schulze

Gundula Czyzewski

Harald MOSCHÜTZ

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.)

1999-04-26

Filing date

2000-04-20

Publication date

2000-11-08

2000-04-20 Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH

2000-11-08 Publication of EP1050616A1 publication Critical patent/EP1050616A1/fr

2003-10-15 Application granted granted Critical

2003-10-15 Publication of EP1050616B1 publication Critical patent/EP1050616B1/fr

2020-04-20 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

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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
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
- D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
- D06F33/40—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of centrifugal separation of water from the laundry
- 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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/24—Spin speed; Drum movements

Definitions

the invention relates to a method for program-controlled spinning wet laundry in a rotatable in a washing machine tub Drum in which the spin program has reached a final speed above the resonance speed, the drum speed along a down-ramp is reduced, as well as a washing machine for performing this method, with a drum rotatable in a tub, a drive device for the drum and a control device for controlling the drum drive device.
the fluid can no longer the weight in the direction of the pump sump are directed so that the Liquid rings on the inner wall of the tub no longer run off and also cannot be pumped out.
the limit speed are in the range of approximately 500 revolutions per minute.
the liquid rings usually remain until the speed, for example on End of a spin cycle is reduced below the limit speed, the Liquid rings in the area of the limit speed begin to degrade. He follows the touring, however, with a high negative acceleration, respectively If the downhill ramp is very steep, it can happen that the liquid rings are not yet completely degraded when a drum speed is reached in which the liquid rings are no longer fully attached due to the centrifugal force the inner tub wall can be held. In such a case the liquid rings can collapse and onto the drum and the inside Drip the laundry and wet it again.
DE-OS 1 485 072 and DE 24 48 834 A1 are a method known to avoid at the maximum speed before the final spin the liquid ring formation, the speed is alternately increased and decreased.
the invention has for its object a method for spinning wet laundry and a washing machine to perform this procedure to create the type mentioned in the course of the spin cycle Liquid rings formed do not come back into contact with the laundry in the Drum can come.
This object is achieved according to the invention by a method in which Speed range that is above the resonance speed and in the range of the limit speed is located on the inner tub wall due to the rotation of the drum formed liquid rings begin to degrade the steepness of the Abtourrampe is reduced, as well as by a washing machine to carry out solved this method, in which the control device in a speed range, which is above the resonance speed and in the range of the limit speed which is formed on the inner wall of the tub due to the rotation of the drum Liquid rings begin to degrade, the steepness of the downhill ramp is reduced.
the reduction in the steepness of the downhill ramp in the sense of the present includes Invention also keeping the speed within a speed range in the range of the limit speed, the speed within the speed range can have any curve shape. By keeping the speed a state is created for a certain period in which the liquid rings start to drain and the liquid can be pumped out, without the liquid rings collapsing beforehand and the washing again can wet. Because the speed is always kept above the resonance range there are no adverse vibrations.
liquid also gets elastic Cuff with which the loading opening of the tub is usually is sealingly connected to the housing opening of the washing machine.
This Cuff is usually designed as a bellows, in the folds of which can collect liquid when spinning, usually through a drain line is returned to the tub.
the limit speed can be determined beforehand and in the control device Washing machine held or in a storage device Control device can be stored. In this case, the washing machine points a sensor for measuring the drum speed on the with the control device connected is. The measurement can be done directly at the drum or at an intermediate link in the drive chain, for example in a reduction gear or the drive motor.
the drum speed can be reduced essentially be increased again to the final speed. For example briefly toured to the limit speed and then toured again to better break down the liquid rings in a dynamic process to be able to. This means that even during the final spin cycle Forming liquid rings are broken down, so that at the end of the spin cycle no or only small liquid rings in the tub are. This temporary downhill tour with subsequent uphill tours can be repeated several times.
the steepness of the downhill ramp can essentially again after a reduction be increased to the previous value. If the liquid rings are dismantled, the resonance area can pass quickly and the tour be shortened overall.
the steepness of the downhill ramp can be reduced in a speed range be in which during the touring an increase in out of the tub flowing amount of liquid can be determined. That way the range of the limit speed, which is precisely due to the dismantling of the liquid rings and the associated draining of liquid from the Dye container is distinguished, safe and determined separately for each spin cycle become. In this way, influences can also be taken into account, such as for example foam formation, which may change the limit speed.
the washing machine with a flow meter is at the drain opening of the tub, which is connected to the control device is.
the steepness of the downhill ramp can also be reduced in a speed range in which during the touring with blocked liquid drain an increase in pressure or a time derivative from the tub of the pressure curve at the bottom of the tub.
the blocking the liquid drain can, for example, by switching off the drain pump be effected. Because the liquid draining from the tub if the drain is blocked, there will be an increase in liquid and thus one Pressure increase leads to the range of the limit speed can be determined safely.
the washing machine 1 shown in FIG. 1 has a tub in its interior 2, in which a drum 3 for receiving the to be spun Laundry 16 is rotatably mounted.
a drive motor 4 is located on the tub 2 attached, which drives the drum 3 via pulleys and a belt.
the tub 2 itself is via springs 10 and shock absorbers 9 with the housing connected to the washing machine 1. Because of the springy suspension the tub 2 forms a swinging with the attached parts Spring-mass system with a resonance frequency R, which is usually in the range of about 200 revolutions per minute. Because in this speed range the tub 2 moves violently despite the damper 9, this is Drive through the speed range advantageously as rarely and very quickly.
the tub 2 and the drum 3 have to put laundry 16 openings on the opening of the tub 2 via an elastic Cuff 12 with a corresponding opening in the housing of the washing machine 1 is sealingly connected.
the cuff 12 forms a fold in the bottom a drain line 13 opens, which is connected to the tub 2. By the drain line 13 can return liquid from the fold into the tub 2 flow back.
a porthole 11 is arranged, which is articulated with the housing of the washing machine 1 is connected and the disc in the form of a truncated cone up to the opening of the drum 3 extends.
a Pump sump 8 At the bottom of the tub 2 is a Pump sump 8 to which a drain pump 15 is connected via a drain hose Pumping off liquid is connected.
the washing machine 1 has a control device 5 with at least an operating element 6.
a Pressure sensor 7 connected to the pressure in the pump sump in front of the drain pump 15 measures.
the control device can use the output signal of the pressure sensor 7 5 determine the liquid level in the tub 2.
the washing machine 1 is shown at the end of a spin cycle, in which the final speed has already been reached.
On the inner tub of the tub have a front and a rear liquid ring in this state 14 formed from the ejected liquid in the tub 2 circulate past the pump sump 8 and are therefore not pumped out can.
These liquid rings 14 form from a limit speed G.
FIG. 2 schematically shows the drum speed curve according to a first embodiment of the method according to the invention, in which in a first phase 21 the speed is gradually increased to the final speed.
the phase 22 at the final speed which is essentially up to 1500 revolutions per minute can vary in length, as determined by the dashed course is indicated.
the speed is then in a phase 23 relatively quickly down to substantially the limit speed G or toured, whereupon in a phase 24 the reduction in speed significantly slows down or the steepness of the downhill ramp significantly is reduced.
the speed reached at the beginning of phase 24 also kept essentially constant become.
the liquid rings 14 begin to run off and can be pumped out with the drain pump 15.
the control device 2 At the beginning of phase 23 Alkaline pump 15 off, thus blocking the liquid drain from the tub 2 and monitors the output signal of the pressure sensor 7.
a significant increase in pressure increase is determined in the pump sump 8, it can increase to a faster rate Liquid level in tub 2 and a larger one from the tub 2 draining amount of liquid to be closed and reaching the Limit speed can be determined.
phase 24 the speed is reduced again relatively quickly in phase 25, to pass through the resonance speed R quickly.
phase 26 rotated the drum 3 at a relatively low speed for a short time to loosen the laundry 16 pressed against the drum wall by spinning.
FIG. 3 shows a drum speed curve according to a second embodiment shown.
the individual phases are with the digits of the corresponding phases characterized in Figure 2, being for the second or third time phases through are characterized by one or two apostrophes are.
the liquid rings 14 will end the spin cycle by repeatedly lowering the speed in the Phases 23, 23 'and 23' 'reduced to substantially the limit speed G, whereby the speed in between again in phases 21 'and 21' 'up to the final speed is increased (phases 22 'and 22' ').
phases 24 and 24 ' after which the speed is increased again, the speed is essentially in the range of Limit speed G kept constant.

Landscapes

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

EP00108689A 1999-04-26 2000-04-20 Procédé et machine à laver pour essorer du linge Expired - Lifetime EP1050616B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19918879		1999-04-26
DE19918879A DE19918879A1 (de)	1999-04-26	1999-04-26	Verfahren und Waschmaschine zum Schleudern von nasser Wäsche

Publications (2)

Publication Number	Publication Date
EP1050616A1 true EP1050616A1 (fr)	2000-11-08
EP1050616B1 EP1050616B1 (fr)	2003-10-15

Family

ID=7905879

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP00108689A Expired - Lifetime EP1050616B1 (fr)	1999-04-26	2000-04-20	Procédé et machine à laver pour essorer du linge

Country Status (2)

Country	Link
EP (1)	EP1050616B1 (fr)
DE (2)	DE19918879A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP2592182A1 (fr)	2011-11-11	2013-05-15	BSH Bosch und Siemens Hausgeräte GmbH	Lave-linge avec détrempage réduit et procédé de fonctionnement de celui-ci
DE102011087258A1 (de)	2011-11-28	2013-05-29	BSH Bosch und Siemens Hausgeräte GmbH	Waschmaschine mit verringerter Rückbefeuchtung sowie Verfahren zu ihrem Betrieb

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2448834A1 (de) *	1973-10-16	1975-04-17	Osby Pannan Ab	Verfahren und vorrichtung zum schleudern in einer waschmaschine
GB1528800A (en) *	1974-12-31	1978-10-18	Thomson Brandt	Laundry washing machine
DE3506987A1 (de) *	1984-02-29	1985-10-31	Fisher & Paykel Ltd., Auckland	Verbesserungen bei oder mit bezug auf textilwaschmaschinen
US5596889A (en) *	1995-10-20	1997-01-28	Electric Power Research Institute	Laundry machine with reduced suds spin cycle

1999
- 1999-04-26 DE DE19918879A patent/DE19918879A1/de not_active Withdrawn
2000
- 2000-04-20 DE DE50004047T patent/DE50004047D1/de not_active Expired - Lifetime
- 2000-04-20 EP EP00108689A patent/EP1050616B1/fr not_active Expired - Lifetime

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2448834A1 (de) *	1973-10-16	1975-04-17	Osby Pannan Ab	Verfahren und vorrichtung zum schleudern in einer waschmaschine
GB1528800A (en) *	1974-12-31	1978-10-18	Thomson Brandt	Laundry washing machine
DE3506987A1 (de) *	1984-02-29	1985-10-31	Fisher & Paykel Ltd., Auckland	Verbesserungen bei oder mit bezug auf textilwaschmaschinen
US5596889A (en) *	1995-10-20	1997-01-28	Electric Power Research Institute	Laundry machine with reduced suds spin cycle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP2592182A1 (fr)	2011-11-11	2013-05-15	BSH Bosch und Siemens Hausgeräte GmbH	Lave-linge avec détrempage réduit et procédé de fonctionnement de celui-ci
DE102011086142A1 (de)	2011-11-11	2013-05-16	BSH Bosch und Siemens Hausgeräte GmbH	Waschmaschine mit verringerter Rückbefeuchtung sowie Verfahren zu ihrem Betrieb
DE102011087258A1 (de)	2011-11-28	2013-05-29	BSH Bosch und Siemens Hausgeräte GmbH	Waschmaschine mit verringerter Rückbefeuchtung sowie Verfahren zu ihrem Betrieb

Also Published As

Publication number	Publication date
DE50004047D1 (de)	2003-11-20
DE19918879A1 (de)	2000-11-02
EP1050616B1 (fr)	2003-10-15

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