FR2701647A3 - Method for operating a household dishwasher. - Google Patents
Method for operating a household dishwasher. Download PDFInfo
- Publication number
- FR2701647A3 FR2701647A3 FR9401765A FR9401765A FR2701647A3 FR 2701647 A3 FR2701647 A3 FR 2701647A3 FR 9401765 A FR9401765 A FR 9401765A FR 9401765 A FR9401765 A FR 9401765A FR 2701647 A3 FR2701647 A3 FR 2701647A3
- Authority
- FR
- France
- Prior art keywords
- washing
- concentrate
- rinsing
- permeate
- sub
- 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
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 238000005406 washing Methods 0.000 claims abstract description 21
- 239000012141 concentrate Substances 0.000 claims abstract description 19
- 239000012466 permeate Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 3
- 150000003839 salts Chemical class 0.000 description 7
- 239000003599 detergent Substances 0.000 description 5
- 239000013505 freshwater Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000003303 reheating Methods 0.000 description 2
- 208000006558 Dental Calculus Diseases 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000008233 hard water Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
- A47L15/4219—Water recirculation
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
- A47L15/0021—Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
- A47L15/0023—Water filling
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
- A47L15/0055—Metering or indication of used products, e.g. type or quantity of detergent, rinse aid or salt; for measuring or controlling the product concentration
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
Landscapes
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Nanotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Vending Machines For Individual Products (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
L'invention concerne un procédé d'exploitation d'un lave-vaisselle ménager avec un programme de lavage comportant les sous-programmes prélavage, lavage, rinçage intermédiaire, rinçage final et séchage et pourvu d'un dispositif d'adoucissement de l'eau à osmose inverse dans lequel l'eau admise est transformée en une partie perméat et une partie concentrat. Le perméat est utilisé comme liquide de rinçage au cours des sous-programmes "lavage" et "rinçage final". Le concentrat est utilisé comme liquide de lavage ou de rinçage dans les sous-programmes "prélavage" et "rinçage intermédiaire".The invention relates to a method of operating a household dishwasher with a wash program comprising the sub-programs pre-wash, wash, intermediate rinse, final rinse and drying and provided with a water softening device. reverse osmosis in which the water admitted is transformed into a permeate part and a concentrate part. The permeate is used as a rinse aid during the "wash" and "final rinse" subprograms. The concentrate is used as a washing or rinsing liquid in the "pre-wash" and "intermediate rinse" sub-programs.
Description
Procédé d'exploitation d'un lave-vaisselle ménager.Method for operating a household dishwasher.
L'invention concerne un procédé d'exploitation d'un lave- The invention relates to a method for operating a washing machine.
vaisselle ménager avec un programme de lavage comportant les sous- household dishes with a washing program including the
programmes suivants prélavage, lavage, rinçage intermédiaire, rinçage final et séchage et comportant un dispositif d'osmose inverse dans lequel l'eau admise est transformée en une partie perméat et une partie concentrat le perméat étant utilisé comme liquide de rinçage lors du following programs prewash, wash, intermediate rinse, final rinse and drying and comprising a reverse osmosis device in which the admitted water is transformed into a permeate part and a concentrate part, the permeate being used as rinse liquid during
sous-programme rinçage final.final rinse subroutine.
Un dispositif d'osmose inverse est comme chacun sait un dispositif pourvu d'une membrane perméable à travers laquelle on fait passer l'eau, l'eau ayant traversé la membrane, c'est-à-dire le perméat, étant totalement libéré de son sel Il subsiste en amont de la membrane, vu dans la direction d'écoulement, une quantité d'eau dans laquelle le sel retenu se trouve à l'état dissous; on appelle cette A reverse osmosis device is, as everyone knows, a device provided with a permeable membrane through which water is passed, the water having passed through the membrane, that is to say the permeate, being completely released from its salt There remains, upstream of the membrane, seen in the direction of flow, a quantity of water in which the retained salt is in the dissolved state; we call this
quantité d'eau concentrat.amount of concentrated water.
Par le document EP-OS 0133 677, on connaît un procédé du type indiqué en introduction dans lequel, pour le sous-programme "rinçage final", on utilise le perméat produit au moyen du dispositif d'osmose inverse tandis que les sous-programmes restants se déroulent Document EP-OS 0133 677 discloses a process of the type indicated in the introduction in which, for the "final rinsing" sub-program, the permeate produced by means of the reverse osmosis device is used while the sub-programs remaining take place
en utilisant de l'eau fraîche provenant du réseau de distribution d'eau. using fresh water from the water distribution network.
Dans le procédé divulgué par le document EP-OS 01 33 677 mentionné précédemment, le concentrat est rejeté, dans le réseau de collecte des eaux usées après plusieurs cycles d'élimination de sel dès qu'une In the process disclosed by the document EP-OS 01 33 677 mentioned previously, the concentrate is discharged into the wastewater collection network after several salt elimination cycles as soon as a
concentration en sel prédéterminée est atteinte. predetermined salt concentration is reached.
L 'inconvénient de ce procédé réside dans le fait qu'une partie de l'eau fraîche utilisée par le lave-vaisselle, à savoir le concentrat, est rejetée sans pratiquement avoir été utilisée Par ailleurs, lorsqu'on utilise une eau dure, pour le sous-programme "lavage" au cours duquel, d'une manière connue en soi, du produit lessiviel est introduit, il faut utiliser une quantité relativement importante de produit lessiviel, en effet, celui-ci étant habituellement constitué de produits chimiques, son efficacité diminue au fur et à mesure que la dureté de The disadvantage of this process lies in the fact that part of the fresh water used by the dishwasher, namely the concentrate, is discharged without practically having been used. Furthermore, when hard water is used, for the "washing" subroutine during which, in a manner known per se, detergent is introduced, it is necessary to use a relatively large amount of detergent, in fact, the latter usually consisting of chemicals, its effectiveness decreases as the hardness of
l'eau dans laquelle il est dilué augmente. the water in which it is diluted increases.
L'objet de la présente invention est par conséquent d'améliorer le procédé décrit en introduction pour l'exploitation d'un lave- vaisselle ménager de manière à utiliser la totalité du volume de The object of the present invention is therefore to improve the process described in the introduction for the operation of a household dishwasher so as to use the entire volume of
liquide et à limiter la quantité de produit chimique utilisée. liquid and limit the amount of chemical used.
Le problème est résolu selon l'invention par le fait que l'on utilise de manière sélective le perméat ou le concentrat comme liquide The problem is solved according to the invention by the fact that the permeate or the concentrate is selectively used as liquid.
de lavage ou de rinçage au cours de tous les sous-programmes. wash or rinse during all subprograms.
L'utilisation du concentrat comme liquide de lavage permet d'utiliser la totalité de l'eau fraîche admise ce qui évite une évacuation inutile d'une partie de la quantité de liquide admise Le perméat étant utilisé au cours du sous-programme "lavage", on obtient une réduction substantielle de la quantité de produit chimique utilisée, c'est-à-dire de la quantité de produit lessiviel, la dissolution de celui-ci dans de The use of the concentrate as washing liquid makes it possible to use all of the fresh water admitted, which avoids an unnecessary evacuation of part of the quantity of liquid admitted. The permeate is used during the "washing" sub-program. , a substantial reduction is obtained in the amount of chemical used, i.e. in the amount of detergent, the dissolution of the same in
l'eau dessalée améliorant sensiblement son efficacité. desalinated water significantly improving its efficiency.
Conformément à une caractéristique préférée de l'invention, on utilise le concentrat comme liquide de lavage ou de rinçage dans les sous- programmes qui se déroulent avec du liquide de lavage ou de In accordance with a preferred characteristic of the invention, the concentrate is used as washing or rinsing liquid in the subroutines which take place with washing or rinsing liquid.
rinçage à froid.cold rinse.
En utilisant le concentrat comme liquide de lavage ou de rinçage en cours des sous-programmes qui se déroulent avec un liquide froid, on évite efficacement une sollicitation des éléments de chauffage par des dépôts de sel ou de leurs produits de réaction tels que le tartre, etc. Conformément à une autre caractéristique de l'invention, on stocke le perméat et le concentrat et on les libère au moyen d'une commande d'alimentation comme liquides de lavage de rinçage ou de lavage lors des sous-programmes concernés Il est connu que par rapport à d'autres dispositifs de traitement de l'eau, par exemple par rapport à une installation d'adoucissement à échangeur d'ions, le traitement de l'eau dans une installation d'osmose inverse exige plus de temps L'agencement mentionné plus haut permet ainsi de réaliser le traitement de l'eau sur une période plus longue dans une installation d'osmose inverse et de stocker à la fois le concentrat et le perméat afin de disposer dans le sous-programme, dans lequel du liquide de lavage ou de rinçage est nécessaire, d'une quantité suffisante dudit liquide de By using the concentrate as washing or rinsing liquid during the sub-programs which take place with a cold liquid, it is effectively avoided a stress on the heating elements by deposits of salt or their reaction products such as tartar, etc. In accordance with another characteristic of the invention, the permeate and the concentrate are stored and released by means of a supply control as washing, rinsing or washing liquids during the relevant sub-programs. It is known that by compared to other water treatment devices, for example compared to an ion exchange softening system, the treatment of water in a reverse osmosis system requires more time The arrangement mentioned higher thus makes it possible to carry out the water treatment over a longer period in a reverse osmosis installation and to store both the concentrate and the permeate in order to have in the subroutine, in which washing liquid or rinsing is necessary, of a sufficient amount of said liquid
lavage ou de rinçage.wash or rinse.
Conformément à un mode de réalisation préféré de l'invention, on utilise le concentrat comme liquide de lavage au cours du sous-programme "prélavage" Le sous-programme "prélavage" est, comme on sait, un sousprogramme qui se déroule sans réchauffage du liquide de lavage Au cours de ce programme "prélavage", on décolle essentiellement les saletés facilement solubles de la vaisselle stockée dans le lave-vaisselle Ceci est obtenu essentiellement en envoyant du liquide sur la vaisselle; la concentration de sel plus élevée dans le In accordance with a preferred embodiment of the invention, the concentrate is used as washing liquid during the "prewash" subroutine. The "prewash" subroutine is, as is known, a subroutine which takes place without reheating the washing liquid During this "prewash" program, the easily soluble dirt is essentially removed from the dishes stored in the dishwasher. This is obtained essentially by sending liquid onto the dishes; the higher salt concentration in the
liquide de lavage n'a ici aucune action néfaste. washing liquid has no harmful effect here.
Conformément à un mode de réalisation préféré de l'invention, on utilise le concentrat comme liquide de rinçage au cours According to a preferred embodiment of the invention, the concentrate is used as rinsing liquid during
du sous-programme "rinçage intermédiaire" Comme dans le sous- of the "intermediate rinse" subroutine As in the subroutine
programme "prélavage " décrit précédemment, le liquide de rinçage est utilisé sans réchauffage dans le sous-programme "rinçage "prewash" program described above, the rinsing liquid is used without reheating in the "rinsing" sub-program
intermédiaire" Dans les lave-vaisselles ménagers connus, le sous- intermediate "In known household dishwashers, the
programme "rinçage intermédiaire" sert à éliminer les résidus de détergent habituellement basiques, qui restent accrochés à la vaisselle à laver, afin de ne pas neutraliser l'action du produit de rinçage final normalement acide qui est injecté lors du sous-programme suivant "rinçage final" L'utilisation d'un liquide de rinçage avec une forte concentration de sel chimiquement neutre d'une part permet d'éliminer la lessive de lavage et d'autre part n'a aucun effet négatif lorsqu'on utilise un produit de rinçage au cours du sous-programme suivant "intermediate rinse" program is used to remove the usually basic detergent residues, which remain attached to the dishes to be washed, so as not to neutralize the action of the normally acidic final rinse aid which is injected during the following "rinse" sub-program final "The use of a rinse aid with a high concentration of chemically neutral salt on the one hand makes it possible to eliminate the washing detergent and on the other hand has no negative effect when using a rinse aid during the next routine
"rinçage final"."final rinse".
Claims (4)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4305020A DE4305020A1 (en) | 1993-02-18 | 1993-02-18 | Method of operating a domestic dishwashing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2701647A3 true FR2701647A3 (en) | 1994-08-26 |
| FR2701647B3 FR2701647B3 (en) | 1995-02-10 |
Family
ID=6480803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9401765A Expired - Fee Related FR2701647B3 (en) | 1993-02-18 | 1994-02-16 | Method for operating a household dishwasher. |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE4305020A1 (en) |
| FR (1) | FR2701647B3 (en) |
| IT (1) | IT1273771B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10352120A1 (en) * | 2003-11-04 | 2005-06-16 | Meiko Maschinenbau Gmbh & Co. Kg | Machine-integrated reverse osmosis device for dishwashers |
| DE102008048491A1 (en) * | 2008-09-23 | 2010-04-01 | Meiko Maschinenbau Gmbh & Co.Kg | Dishwasher with low-temperature rinsing |
| US7871521B2 (en) * | 2008-10-07 | 2011-01-18 | Ecolab Inc. | Zero waste reverse osmosis system and downstream rinsing |
| DE102010011471A1 (en) * | 2010-03-15 | 2011-09-15 | Meiko Maschinenbau Gmbh & Co. Kg | Continuous dishwasher with improved rinse |
| ITMI20130300A1 (en) * | 2013-02-28 | 2014-08-29 | Comenda Ali S P A | PERFORMED DISHWASHER MACHINE WITH DEMINERALIZED WATER FINAL RINSE |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1944397A1 (en) * | 1969-09-02 | 1971-03-11 | Bosch Hausgeraete Gmbh | Washing machine or dishwasher |
| US4156621A (en) * | 1977-09-28 | 1979-05-29 | American Sterilizer Company | Regeneration of used dishwashing water without chemical additives for sanitizing and spot-free rinse uses |
| FR2404420A1 (en) * | 1977-10-03 | 1979-04-27 | Mayer Albert | Treating water for use in dishwasher - by passing through filter and then a water-softener to remove calcium salts |
| IT1164385B (en) * | 1983-08-05 | 1987-04-08 | Zanussi A Spa Industrie | PROCEDURE AND DEVICE FOR THE DEMINERALIZATION OF WATER FOR WASHING MACHINES |
| DE3914940A1 (en) * | 1989-05-06 | 1990-11-08 | Guenter Lauer | Reverse osmosis purifies part of water supply for drinking - while remaining flow is used for less demanding domestic needs |
-
1993
- 1993-02-18 DE DE4305020A patent/DE4305020A1/en not_active Ceased
-
1994
- 1994-02-15 IT ITMI940270A patent/IT1273771B/en active IP Right Grant
- 1994-02-16 FR FR9401765A patent/FR2701647B3/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| IT1273771B (en) | 1997-07-10 |
| ITMI940270A1 (en) | 1995-08-15 |
| ITMI940270A0 (en) | 1994-02-15 |
| DE4305020A1 (en) | 1994-08-25 |
| FR2701647B3 (en) | 1995-02-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |