GB2145845A - Method of controlling and/or regulating an automatic washing machine - Google Patents
Method of controlling and/or regulating an automatic washing machine Download PDFInfo
- Publication number
- GB2145845A GB2145845A GB08420057A GB8420057A GB2145845A GB 2145845 A GB2145845 A GB 2145845A GB 08420057 A GB08420057 A GB 08420057A GB 8420057 A GB8420057 A GB 8420057A GB 2145845 A GB2145845 A GB 2145845A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amount
- washing
- regulating
- controlling
- washing machine
- 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
Links
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
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/087—Water level measuring or regulating devices
-
- 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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/18—Condition of the laundry, e.g. nature or weight
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
A method for the control and/or regulation of a domestic automatic washing machine. In it, the amount of so-called absorbed detergent solution is first determined and important components of the washing programme (not described) are derived only from this, for example the amount of detergent needed, the amount of cooling and/or rinsing water and the number of rinsing operations needed.
Description
SPECIFICATION
Method of controlling and/or regulating an automatic washing machine
The invention relates to a method of control
ling and/or regulating an automatic washing
machine, wherein the amount of water run
ning in is dependent upon the washing to be washed.
In particular, the invention relates to a
method which is used in domestic washing
machines. Such a method is shown in DE-OS
29 21 911. According to the control device described there, the amount of water which is needed to wet the washing to be washed is determined by means of a water meter. This amount of water is called absorbed detergent solution. The determination of the absorbed detergent solution is effected at that water level, also called the washing level, at which the washing is to be washed according to the programme selected. The number of washing levels is determined by suitably mounted level sensors, for example so-called float switches.
One disadvantage of such a method consists in that the washing level provided for by the washing programme is always used regardless of the amount of washing to be washed. With a relatively small amount of washing, that is to say in the event of an under-loading of the automatic washing machine, this leads to an increased consumption of water and of heating energy.
It is the object of the invention to improve a method of the type in question in the sense that a washing programme is carried out essentially in accordance with the amount of absorbed detergent solution.
According to the invention, this problem is solved by a process as initially referred to having the following combination of the features:
a) a level sensor is mounted in the region of a lower washing level to determine the water level of the water running in;
b) the amount of the absorbed detergent solution is determined from the amount of water running in for the first time, which is needed to rach the level sensor and the amount of water running in after pumping completely empty;
c) at least one component of the washing programme is determined depending on the amount of absorbed detergent solution.
One advantage of the invention consists in that only a single level sensor is necessary.
The number of components susceptible to trouble in an automatic washing machine is thereby considerably reduced.
The invention is based on the knowledge that in the automatic washing machines usual at present, at least one microprocessor is present which influences the control and/or regulation of the automatic wshing machine according to the required washing programme. Such a microprocessor is suitable, particularly for calculating operations, in an advantageous manner.
The invention is explained in more detail below with reference to an example of execution. In an automatic washing machine with a washing drum, a (water-)level sensor is mounted in the region of a lower washing level, that is to say in such a manner that the corresponding water level lies above the deepest point of the washing drum. In order to reach the washing level determined by the level sensor for the first time, an amount of water running in is necessary which is composed additively of a blank value, for the unloaded automatic washing machine and the amount of absorbed detergent solution. Since the blaink value can be regarded as a known constant of the automatic washing machine, it is possible to calculate the amount of absorbed detergent solution from the amount of water running in for the first time by forming a difference.Important components of the washing programme are derived from the calculated amount of absorbed detergent solution, for example the amount of detergent necessary and/or the amount of cooling water and/or rinsing water necessary and/or the number of rinsing operations necessary. A determination of the amount of detergent necessary is possible.
The method described renders possible, in particular, a method of operation of an automatic washing machine which is kind to the environment because water and energy consumption as well as the amount of waste water (detergent solution) are dependent only on the amount of absorbed detergent solution and so on the amount of washing to be washed.
In another embodiment of the invention, during a washing programme, the amount of absorbed detergent solution is first determined, for example by the method described above. The lower washing level necessary for this is evaluated by the said level sensor working continuously, for example by means of a microprocessor which also controls and/or regulates the course of the washing programme. According to the amount of absorbed detergent solution and/or the washing programme, the amounts of water and/or washing levels needed for each washing programme section are now calculated, for example with reference to values determined experimentally and stored in the microprocessor.By means of an intake of water which may be necessary or by pumping our an excess amount of water, it is possible to adjust the calculated amount of water and/or the calculated washing level and so to render possible an optimum washing operation. As a result, a waste of water, energy and detergent is avoided.
By using a continuously working level sensor (water-level gauge), it is possible to determine the amount of absorbed detergent solution, and to check and if necessary to correct the washing level necessary during a washing programme and/or a washing programme section, for example by an intake of water or by pumping our an excess amount of water.
An optimum washing operation is possible in an advantageous manner by an evaluation of the washing level.
A continuously working level sensor may be based for example, on a continuously working (that is to say an analog) pressure guage which determines the water pressure in the washing drum. A washing level is then allocated to the water pressure measured. Such a pressure guage contains, for example, a diaphragm which can be moved by pressure and the deflections of which alter the inductance of a coil.
Claims (7)
1. A method of controlling and/or regulating an automatic washing machine wherein, in particular, the amount of water running in is dependent on the washing to be washed, characterised by the combination of the following features:
a) a level sensor is mounted in the region of a lower washing level to determine the water level of the water running in;
b) the amount of the absorbed detergent solution is determined from the amount of water running in for the first time, which is needed to reach the level sensor and the amount of water running in after pumping completely empty;
c) at least one component of the washing programme is determined depending on the amount of absorbed detergent solution.
2. A method of controlling and/or regulating an automatic washing machine as claimed in Claim 1, characterised in that the amount of detergent needed is determined depending on the amount of absorbed detergent solution.
3. A method of controlling and/or regulating an automatic washing machine as claimed in Claim 1 or Claim 2, characterised in that the amount of water running in required by the washing programme and/or the number of washing programme sections is determined depending on the amount of absorbed detergent solution.
4. A method of controlling and/or regulating an automatic washing machine as claimed in any one of Claims 1 to 3 characterised in that, depending on the amount of absorbed detergent solution and the washing programme set, a plurality of water levels are determined which are allocated to various washing programme sections and that then, during a washing programme section, the associated washing level is set.
5. A method of controlling and/or regulating an automatic washing machine as claimed in any one of Claims 1 to 4, characterised in that a continuously working fullness gauge is used to determine the amount of absorbed detergent solution and/or adjust a washing level.
6. A method of controlling and/or regulating an automatic washing machine as claimed in any one of Claims 1 to 5, characterised in that a microprocessor is used, at least to determine the amount of absorbed detergent solution and/or to adjust a washing level.
7. A method of controlling and/or regulating an automatic washing machine substantially as described herein.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19833329346 DE3329346A1 (en) | 1983-08-13 | 1983-08-13 | Method for controlling and/or regulating an automatic washing machine |
| DE19843402730 DE3402730A1 (en) | 1984-01-27 | 1984-01-27 | Process for controlling and/or regulating a washing machine |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8420057D0 GB8420057D0 (en) | 1984-09-12 |
| GB2145845A true GB2145845A (en) | 1985-04-03 |
| GB2145845B GB2145845B (en) | 1987-06-10 |
Family
ID=25813187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08420057A Expired GB2145845B (en) | 1983-08-13 | 1984-08-07 | Method of controlling and/or regulating an automatic washing machine |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR2550558B1 (en) |
| GB (1) | GB2145845B (en) |
| IT (1) | IT1176609B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1215329A2 (en) * | 2000-12-13 | 2002-06-19 | Miele & Cie. GmbH & Co. | Method for washing laundry |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2559796B1 (en) * | 1984-02-17 | 1986-11-21 | Esswein Sa | WASHING MACHINE WITH AUTOMATIC DETERMINATION OF THE TYPE OF LAUNDRY INSERTED IN THIS MACHINE |
| FR2577949B1 (en) * | 1985-02-28 | 1988-02-12 | Esswein Sa | WASHING AND SPINNING MACHINE WITH VARIABLE SPINNING TIME |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3141791A1 (en) * | 1981-10-21 | 1983-05-05 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | Process for detecting the water quantity which has flowed into the tub of a drum-type washing machine |
-
1984
- 1984-08-07 GB GB08420057A patent/GB2145845B/en not_active Expired
- 1984-08-08 FR FR8412550A patent/FR2550558B1/en not_active Expired
- 1984-08-10 IT IT22300/84A patent/IT1176609B/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1215329A2 (en) * | 2000-12-13 | 2002-06-19 | Miele & Cie. GmbH & Co. | Method for washing laundry |
| EP1215329A3 (en) * | 2000-12-13 | 2003-07-09 | Miele & Cie. KG | Method for washing laundry |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8420057D0 (en) | 1984-09-12 |
| FR2550558A1 (en) | 1985-02-15 |
| IT8422300A0 (en) | 1984-08-10 |
| IT1176609B (en) | 1987-08-18 |
| GB2145845B (en) | 1987-06-10 |
| FR2550558B1 (en) | 1987-06-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |