EP0367062B1 - Adoucisseur d'eau pour lave-vaisselle - Google Patents

Adoucisseur d'eau pour lave-vaisselle Download PDF

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Publication number
EP0367062B1
EP0367062B1 EP89119620A EP89119620A EP0367062B1 EP 0367062 B1 EP0367062 B1 EP 0367062B1 EP 89119620 A EP89119620 A EP 89119620A EP 89119620 A EP89119620 A EP 89119620A EP 0367062 B1 EP0367062 B1 EP 0367062B1
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EP
European Patent Office
Prior art keywords
water
chamber
regeneration
container
vessel
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.)
Expired - Lifetime
Application number
EP89119620A
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German (de)
English (en)
Other versions
EP0367062A1 (fr
Inventor
Giuseppe Fontana
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.)
Tecnoplastica Prealpina SpA
Original Assignee
Tecnoplastica Prealpina SpA
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Publication date
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Publication of EP0367062A1 publication Critical patent/EP0367062A1/fr
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    • 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
    • A47L15/4229—Water softening arrangements

Definitions

  • This invention relates to a device for softening water for dishwashing machines, and regards specifically a special arrangement and configuration of the container for the ionic resin used for softening the water, of the salt container and of the vessel for collecting the water which regenerates the ionic resin, as well as the conduits which feed the water and interconnect said vessel and said containers, obtaining overall an integrated unit capable of providing several advantages compared to other known systems.
  • water softening devices which comprise an ionic resin container, a regeneration salt container and a vessel for collecting the regeneration water, formed separately from one another; thus during assembling and installation in a dishwashing machine, relative interconnecting tubes have to be fitted which may cause possible water leaks.
  • the configuration and separate arrangement of the containers for salt and ionic resin as well as the vessel for the regeneration water lead to greater dimensions and more complex assembling operations.
  • a water softening device in the form of a single unit comprising in combination a ionic resin container connected to the interior of the tank of a dishwashing machine, respectively to the inlet for the water through a feeding conduit provided with a lateral opening, and a salt container connected to the resin container by means of a solenoid valve; the device furthermore comprises a regeneration vessel having a first regeneration chamber opening into the salt container and connected to a venting aperture and at least a second regeneration chamber for collecting supplemental regeneration water.
  • Said water softening device presents a very complex structure in which the chambers for collecting regeneration waters are separately charged from the upper ends and are selectively discharged at the bottom by a rotational valve means which is set in a fixed position allowing the discharge of the selected chamber only; therefore in non-selected chambers remain water for a long period of time which may cause pollution of the water fed in the washing tank during the use of dishwashing machine.
  • water softening devices having a flat configuration are known from CH-A-513.773, FR-A-2482442 and FR-A-2442037; in particular from FR-A-2442037 a water softening device is known in which the use of a water feeding conduit is suggested having an arched section provided with a lateral opening defining an air-break for the flow of water.
  • an object of present invention is to provide a device for softening water in dishwashing machines in which the ionic resin container, the salt container and the vessel for collecting the regeneration water constitute a structural and functional unit of minimal dimensions designed to provide numerous advantages compared to previously known systems.
  • the object of present invention is to provide a water softening device in which the conduits for interconnecting the various containers and the chambers for collecting the regeneration water have been provided as integral part of the same unit in which the use of rotational valve means for selecting and discharging a regeneration chamber is avoided, thus simplifying the construction and avoiding pollution of the water fed to the washing machine.
  • a further object of this invention is to provide a softening device as related above, by means of which the filling of one or more chambers of the vessel for the regeneration water can be selected by simply opening or closing a venting conduit.
  • FIG. 1 shows part of a dishwashing machine 10 comprising a washing tank 11 provided with a rotor having nozzles 12, said rotor being connected to a pump 13 for feeding the washing water in an usual form.
  • 14 in Fig. 1 indicates as a whole a device for softening water according to this invention, which is partially positioned below and on a side of the washing tank 11. The softening device is shown in detail in the remaining figures.
  • the softening device comprises a container 15 for the ionic resin used to soften the water, and a container 16 for the salt used to regenerate the ionic resin which is connected to the container 15 by means of a solenoid valve, not shown, provided in a seating 17 on one side of the salt container 16.
  • the vessel 18 and the containers 15 and 16 constitute an integrated functional and structural unit, together with all conduits or passages for circulating the water.
  • the vessel 18 is flat shaped and provided with a conduit 19 for feeding the water, in which the conduit 19 comprises a rising portion 19a connect to the inlet fitting 20, a first arched or arch shaped portion 19b and a second arch shaped portion 19c, concentric and internal to the previous one, which continues with a downwardly directed portion 19d which, via a duct 21 formed in the bottom part of the softening device, communicates with the interior of the ionic resin container 15, as shown in Fig. 7.
  • the second arched portion 19c of the water feeding conduit on its inner side has an aperture 22 defining, in a manner in itself known, an air-break for the water flow which runs along the conduit 19, before entering the ionic resin container 15 and then the tank of the dishwasher machine.
  • the flat vessel 18 comprises moreover a first chamber 23 for the regeneration water, and at least a second chamber 24 communicating with the first one and which, like the latter, opens at the bottom into the salt container 16 (Figs. 4 and 6) via a set of openings 25 in the lower part 23a common to the two chambers of the wall which divides from the interior of the salt container.
  • the first chamber 23 again opens above and is connected to the feeding conduit 19 by a second lateral opening 26 provided at the beginning of the downwardly oriented portion 19d, i.e. after the arched portion 19c; this opening 26 can be properly dimensioned for example providing it in a plate, not shown, which can be inserted in a seat to enable the vessel 18 to be filled at the same time as the tank 11 of the dishwashing machine.
  • a slanted baffle 27 is provided between the upper open end of the chamber 23 and the air-break opening 22 of the arched section 19c of the feeding duct to prevent any leaks of water from the opening 22, from entering the chamber 23 by varying or modifying the quantity of water collected in it.
  • the chamber 23 is further connected to a side venting chamber 28 by means of an opening 29 which defines the maximum level of water which can be loaded in the chambers 23 and 24 for the water used for regenerating the resin.
  • the venting chamber 28 in turn communicates with the outside by means of an upper opening 30 and respectively communicates with the inside of the tank 11 of the dishwashing machine by means of a circular opening 31 for releasing steam.
  • fins 32, slanted in opposite directions are formed to define a steam condenser, integrated with the unitary structural assembly of the softening device.
  • the second chamber 24 for the resin-regeneration water is closed and communicates by means of an opening 34 with a separate venting duct 33, positioned behind the vessel 18; a removable plug member 35 enables the venting duct 33 to be closed or opened respectively so as to prevent or enable respectively chamber 24 together with chamber 23 to be filled.
  • the salt container 16 communicates by means of slots 37 with an intermediate chamber 38 having on the opposite side a hole 39 defining a valve seat normally closed by the solenoid valve; in this way the chamber 38 and therefore the salt container 16 can communicate with the bottom of the ionic resin container 15 via an additional conduit 40 and a hole 41 in the base wall of the said container 15.
  • the latter in the example given in Figure 7, is moreover provided with an upper outlet 42 which protrudes directly into the washing chamber 11 and which is closed by a removable cap 43 having lateral slots 44.
  • the cap 43 serves as a protection to prevent the dirty water contained in the tank 11 from entering the ionic resin container 15.
  • the inlet of the water into the tank 11 could be positioned differently and suitably connected by means of a water trap or in some other way to the outlet of the ionic resin container 15.
  • the water softening device of the invention is finally completed with a device for indicating the density of the brine contained in the salt container 16, in the form of a device integrated with the structure of the softening device. More particularly, as shown in Figs. 8 and 10, inside the salt container 16 a sump 45 is formed which communicates with the inside of the container 16 by openings or slots 46 in a separating baffle. Inside the sump 45 there is a float 47 comprising a magnet 48 which, as a function of the position assumed by the float 47, in turn dependent upon the density of the brine, actuates or de-actuates a magnetic switch 49 situated outside the container 16, connected to the electrical control circuit of the dishwashing machine.
  • the softening device operates as follows: on the assumption that only the chamber 23 of the flat vessel 18 is to be loaded, the plug 35 is inserted to close the venting duct 33.
  • the water flows along the feeding conduit 19 and from there, via the lower duct 21, reaches the interior of the ionic resin container 15, where the water is to be softened before being fed or entering the washing tank 11 of the dishwashing machine.
  • a certain quantity of water passes through the opening 26 of the feeding conduit 19, filling the chamber 23 for the regeneration water, until it reaches the level indicated by the venting opening 29.
  • the water which may fall from the opening 22 in the arched section 19b of the feeding conduit 19, is deviated by the baffle 27 towards the venting chamber 28 and from there is introduced into the washing tank 11 through the opening 31 on the base.
  • a control signal is given to the above mentioned solenoid valve so that it opens the valve seat 39 enabling the water in the chamber 23 or both chambers 23 and 24 to be released into the salt chamber 16 to cause a given quantity of brine to flow towards the resin to be regenerated.
  • the chamber 23 or both chambers 23 and 24 are again filled with the required quantity of water.
  • a water softening device for dishwashing machines comprising a salt container, an ionic resin container and a vessel for collecting the regeneration water, in the form of a structurally integrated unit in which the various component parts are interconnected by means of internal conduits or passages which avoid the use of additional connecting tubes, with consequent advantages as regards operation and assembling.
  • the flat configuration of the vessel for the regeneration water and its configuration of a single part integral with the salt container and with the ionic resin container provide a structural unit of extremely small dimensions which can be easily assembled by arranging the containers 15 and 16 below and respectively the vessel 18 on one side of the washing tank 11; in this way the water softening device can be assembled extremely rapidly and with the advantage that all the operations usually required for assembling the interconnecting houses and of the relative sealing bands are totally eliminated.
  • the adoption of chambers open below in the vessel is advantageous in that it allows the automatic elimination of any trace of stagnant water which in time could cause the formation of algae and substances likely to rot with the result of unpleasant smells.

Claims (8)

1. Dispositif adoucisseur d'eau destiné aux machines à laver la vaisselle comprenant en combinaison: un réservoir de résine ionique (15) communiquant avec l'intérieur de la cuve de lavage (11) de la machine à laver la vaisselle (10), respectivement avec l'entrée (20) de l'eau par une conduite d'alimentation (19) ayant une section arquée (19c) munie d'une première ouverture latérale (22) qui définit un passage d'air pour l'écoulement d'eau; un réservoir de sel (16) communiquant avec le réservoir de résine (15) au moyen d'une vanne solénoïde; et un récipient de régénération (18) servant à recueillir l'eau utilisée pour régénérer la résine, le récipient (18) comprenant au moins une première et une seconde chambre de régénération (23) s'ouvrant dans le réservoir de sel (16), la première chambre de régénération (23) communiquant de plus avec un premier moyen de purge (28), la seconde chambre (24) étant destinée à recueillir l'eau de régénération de résine supplémentaire, ces chambres d'eau de régénération (23, 24) conjointement avec la conduite d'alimentation d'eau (19) et les passages respectifs pour la communication directe entre le récipient précité (18) et les réservoirs de résine et de sel (16, 15) étant sous la forme d'une seule unité de configuration plate dans laquelle le récipient de régénération (18) s'étend vers le haut et est solidaire des réservoirs de sel et de résine (15, 16), caractérisé en ce que la conduite d'alimentation d'eau (19) communique à son tour avec la première chambre de régénération (23) au moyen d'une seconde ouverture latérale (26) prévue en aval de la section arquée (19c); la seconde chambre de régénération (24) étant sous forme d'une chambre ouverte vers le bas (24), cette seconde chambre (24) étant en communication avec la première chambre (23) au niveau du fond et pouvant être reliée sélectivement à un second moyen de purge d'air (33).
2. Dispositif adoucisseur d'eau selon la revendication 1, caractérisé en ce que les chambres (23, 24) pour le recueil de l'eau de régénération communiquent avec le réservoir de sel (16) au moyen de fentes (25) sur le fond d'une paroi latérale (23a) du réservoir de sel.
3. Dispositif adoucisseur d'eau selon la revendication 1, caractérisé en ce que les chambres (23, 24) du récipient (18) pour recueillir l'eau de régénération sont munies d'ouvertures de purge séparées (30, 34).
4. Dispositif adoucisseur d'eau selon les revendications 1 et 3, caractérisé en ce que les second moyens de purge comprennent l'une des ouvertures de purge (34) agencée dans une gaine de purge comprenant un élément obturateur amovible (35).
5. Dispositif adoucisseur d'eau selon la revendication 1, caractérisé en ce que le réservoir de sel (16) communique avec le réservoir de résine ionique (15) au moyen d'une chambre intermédiaire (38) disposée à l'intérieur du réservoir lui-même et en ce que la chambre intermédiaire (38) est reliée à la chambre de résine ionique (15) par une conduite supplémentaire (40) comprenant une vanne solénoïde, cette conduite supplémentaire (40) et le siège (17) de la vanne solénoïde étant agencés sur un côté du réservoir de sel (16).
6. Dispositif adoucisseur d'eau selon la revendication 1, caractérisé en ce que le récipient plat destiné à recueillir l'eau de régénération comprend une chambre de purge de vapeur (28) positionnée latéralement par rapport aux chambres de recueil d'eau (23, 24), cette chambre de purge (28) comprenant des déflecteurs ou chicanes inclinées vers le bas (32) définissant des moyens de condensation pour la vapeur.
7. Dispositif adoucisseur d'eau selon les revendications précédentes, caractérisé en ce que le récipient (18) destiné à recueillir l'eau sur l'extrémité supérieure de la première chambre (23), comprend une chicane inclinée (27) placée entre une ouverture brise-air (22) dans la section arquée (19c) de la conduite d'alimentation d'eau (19) et une extrémité ouverte supérieure de la chambre (23) elle-même.
8. Dispositif adoucisseur d'eau selon la revendication 7, caractérisé en ce que la chicane de séparation (27) s'étend partiellement dans la chambre de purge de vapeur (28).
EP89119620A 1988-11-04 1989-10-23 Adoucisseur d'eau pour lave-vaisselle Expired - Lifetime EP0367062B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2210688U IT215222Z2 (it) 1988-11-04 1988-11-04 Dispositivo addolcitore d'acqua per lavastoviglie.
IT2210688U 1988-11-04

Publications (2)

Publication Number Publication Date
EP0367062A1 EP0367062A1 (fr) 1990-05-09
EP0367062B1 true EP0367062B1 (fr) 1992-02-05

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EP89119620A Expired - Lifetime EP0367062B1 (fr) 1988-11-04 1989-10-23 Adoucisseur d'eau pour lave-vaisselle

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EP (1) EP0367062B1 (fr)
DE (1) DE68900815D1 (fr)
ES (1) ES2030575T3 (fr)
IT (1) IT215222Z2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108064143A (zh) * 2015-06-19 2018-05-22 比特龙有限公司 用于洗碗机的集成部件

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT233259Y1 (it) * 1994-04-19 2000-01-26 Candy Spa Gruppo integrato multifunzione per macchina lavastoviglie
NZ518288A (en) 2002-04-10 2004-09-24 Fisher & Paykel Appliances Ltd Washing appliance water softner
DE10311126A1 (de) * 2003-03-12 2004-09-23 Miele & Cie. Kg Wasserenthärter für eine Geschirrspülmaschine
WO2016203441A1 (fr) * 2015-06-19 2016-12-22 Bitron S.P.A. Élément intégré pour lave-vaisselle
CN108478152A (zh) * 2018-05-12 2018-09-04 中山市天隆燃具电器有限公司 洗碗机用的软水器与呼吸器一体结构
CN108606759A (zh) * 2018-06-01 2018-10-02 华帝股份有限公司 一种洗碗机呼软一体器
CN108742454B (zh) * 2018-07-23 2024-02-20 广东赛普智能制造股份有限公司 一种用于洗碗设备的软水呼吸分配一体机

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0205787A1 (fr) * 1985-06-26 1986-12-30 Bosch-Siemens HausgerÀ¤te GmbH Machine à laver la vaisselle

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH513773A (de) * 1970-07-20 1971-10-15 Holzer Patent Ag Einrichtung zum selbsttätigen Regenerieren von Ionenaustauschern
IT975699B (it) * 1972-11-10 1974-08-10 Elbi Spa Dsipositivo segnalatore di allarme per decalcificatori d acqua par ticolarmente per macchine lavastovi gli5
DE2851076C2 (de) * 1978-11-25 1984-05-03 Schrott, Hugo, 7995 Neukirch Einrichtung zum Regenerieren des Ionenaustauschers einer Geschirrspülmaschine
FR2482442A3 (fr) * 1980-05-19 1981-11-20 Smeg Elettrodomestici Groupe de charge et de decalcification de l'eau, pour machines a laver la vaisselle
DE3209563C2 (de) * 1982-03-16 1984-04-26 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Enthärtungseinrichtung für Haushaltgeräte, insbesondere für Geschirrspülmaschinen
DE3239226C1 (de) * 1982-10-22 1984-01-19 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Geschirrspülmaschine
DE3302566A1 (de) * 1983-01-26 1984-08-02 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Wasserhaerteschalter
DE3345582A1 (de) * 1983-12-16 1985-06-27 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Wasservorratsbehaelter, insbesondere fuer eine enthaertungseinrichtung in geschirrspuelmaschinen
DE3522901A1 (de) * 1985-06-26 1987-01-08 Bosch Siemens Hausgeraete Haushalt-geschirrspuelmaschine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0205787A1 (fr) * 1985-06-26 1986-12-30 Bosch-Siemens HausgerÀ¤te GmbH Machine à laver la vaisselle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108064143A (zh) * 2015-06-19 2018-05-22 比特龙有限公司 用于洗碗机的集成部件

Also Published As

Publication number Publication date
IT215222Z2 (it) 1990-09-11
DE68900815D1 (de) 1992-03-19
EP0367062A1 (fr) 1990-05-09
ES2030575T3 (es) 1992-11-01
IT8822106V0 (it) 1988-11-04

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