US3386454A - Dishwasher with integral water softener - Google Patents

Dishwasher with integral water softener Download PDF

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Publication number
US3386454A
US3386454A US538707A US53870766A US3386454A US 3386454 A US3386454 A US 3386454A US 538707 A US538707 A US 538707A US 53870766 A US53870766 A US 53870766A US 3386454 A US3386454 A US 3386454A
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Prior art keywords
water
dishwasher
chamber
regenerating
water softener
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Expired - Lifetime
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US538707A
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English (en)
Inventor
Norman L Kendt
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General Electric Co
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General Electric Co
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Publication date
Application filed by General Electric Co filed Critical General Electric Co
Priority to US538707A priority Critical patent/US3386454A/en
Priority to GB7969/67A priority patent/GB1182341A/en
Priority to NL6703336A priority patent/NL6703336A/xx
Priority to CH417067A priority patent/CH455695A/de
Priority to SE4297/67A priority patent/SE325115B/xx
Priority to DK162667AA priority patent/DK119248B/da
Priority to DE19671628612 priority patent/DE1628612A1/de
Priority to FR100868A priority patent/FR1517298A/fr
Application granted granted Critical
Publication of US3386454A publication Critical patent/US3386454A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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 
    • D06F39/007—Arrangements of water softeners
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/20—Time, e.g. elapsed operating time
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/18—Water softening devices

Definitions

  • This invention relates generally to an automatic dishwasher and, more specifically, to an automatic dishwasher having a water softener integrally associated therewith.
  • an automatic dishwasher or another automatic washing machine, with an arrangement which effects automatic regeneration of the ion-exchange media of the water softener without elongation of the overall operational cycle and which also minimizes corrosive action by the regenerative solution upon the components of the dishwasher by providing suitable handling means for the regenerative solution before, during and following regeneration of the ion-exchange media.
  • an automatic dishwasher having a water softener integrally associated therewith. Means are provided to achieve automatic regeneration of the water softener without elongation of the overall operational cycle of the dishwasher.
  • the sequence control means again energizes the regenerating system which admits a second charge of regenerating solution to the water softener.
  • the second charge displaces the first charge.
  • the sequence control means then de-energizes the regenerating system, leaving the second charge to remain in the softener until the dishwasher is next employed to wash dishes.
  • the present invention further contemplates an improved water softener for use with an automatic dishwasher wherein a reservoir is provided to receive the first charge of regenerating solution as it is displace-d from the softener by the second charge and retain the first charge until the dishwasher is next employed to wash dishes.
  • FIGURE 1 is an elevational view, partly cut away to show details, of an automatic dishwasher employing the present invention
  • FIGURE 2 is a sectional view of the water softener f the present invention.
  • FIGURE 3 is a schematic representation of the control system of the present invention.
  • FIGURE 4 is a sequence control cam chart illustrating the sequence of operations of the schematically shown elements of FIGURE 3.
  • an automatic dishwasher 11 is provided with an outer cabinet 11 defining therein a wash chamber 12. Access to wash chamber 12 is provided by means of a closure member or door 13 which pivots about a substantially horizontal axis defined by a pair of hinges 14, only one of which is visible in FIGURE 1. Dish-supporting racks 15 and 1b are provided within wash chamber 12 to support dishes or other articles to be washed therein.
  • the bottom wall 17 of wash chamber 12 has a centrally depressed portion forming a sump 18 wherein wash fluid or other liquids will collect.
  • a motor-pump assembly 19 including an electrically-rcversibie motor 2%; and a pump 21.
  • Pump 21 is provided with an inlet 22 through which fluid is withdrawn by pump 21 from sump 1-8 and, in one direction of rotation of motor 2%, is propelled through an efiiuent discharge outlet '23 and, in the opposite direction of rotation of motor 2%, is propelled upwardly into a spray means or arm 24.
  • Spray arm 24 is mounted on the top of pump 21 for rotation about a substantially vertical axis and is provided with a plurality of orifices which eject the fluid pumped by pump 21 upwardly into wash chamber 12 to effectuate a wash action upon articles supported by racks 15 and 16. Certain of the orifices in arm 24 are directed in a manner whereby the reaction force created by the ejection of the fluid causes arm 24 to rotate.
  • a generally annular electrical resistance heating ele- I an electrical conductor may be connected to provide electrical energy to heating element 25.
  • Heating element 25 may be employed to heat wash fluids present within wash chamber 12 during the washing and/or rinsing operation of dishwasher however, the more important function of heating element 25 is to effectuate drying of articles supported by racks and 16 upon completion of the washing and rinsing operations.
  • a conventional complete dishwasher cycle of operation includes initially the admission of water into wash chamber After a sufiicient quantity of water has been admitted to wash chamber 12, a motor 2% ⁇ is energized to rotate in a direction wherein the water is pumped by pump 21 up through spray arm 24 to effectuate a pro-rinse of the articles supported by racks 15 and 16. Motor 219 is then cle-energized and then re-energized in the opposite direction of rotation so that water is withdrawn from pump 18 and pumped out through discharge outlet 23. This sequence of events is repeated several times with at least one of the times including the addition of a detergent to the water.
  • heating element is energized to heat the air within wash chamber 12 and wash chamber 12 may be vented so that the heated air will pick up moisture from the articles supported by the racks 15 and 16 and will be vented out of the wash chamber 12 to be replaced by dry cool air which in turn is heated.
  • This process commonly referred to as the drying cycle, continues for a time period in the magnitude of twenty minutes. After completion of thedrying cycle, all components of the dishwasher are de-energized and the complete cycle of operation is terminated.
  • the present invention does not affect the conventional dishwasher cycle of operation as just described but incorporates into this conventional cycle an integrated water softener which softens the water entering wash chamber 12 and, further, incorporates an automatic regeneration of the water softener without elongating the overall dishwasher cycle of operation.
  • the present invention includes a water softener supported on the inner surface of outer cabinet 11, below bottom wall 17, by means of a bracket 31.
  • Water softener 3t includes a resin chamber 32.
  • Resin chamber 32 is defined at its upper extremity by an upper screen 33 and at its lower extremity by a lower screen 34.
  • Screens 33 and 34 have openings therethrough which allow water or other liquids to pass through but which prevent passage of the particulate ion-exchange resin, or other ion-exchange media, disposed Within resin chamber 32.
  • An opening 35 is provided in one wall of resin chamber 32 so that the ion-exchange media may be replenished or replaced if necessary.
  • Opening '35 is provided with a threaded cap 36 to prevent the escape of liquid or ionexchange media through opening 35.
  • An inlet chamber 37 is defined at the lower portion of water softener 30 by lower screen 34 and the bottom wall of water softener 30.
  • an outlet chamber 38 is defined at the upper portion of water softener 30 by upper screen 33 and the upper wall of water softener 3%.
  • Outlet chamber 38 has a port 39 which opens into a passageway 40 extending downwardly adjacent resin chamber 32.
  • a port 41 provides communication between the lower end of the passageway 40 and the lower portion of a reservoir 42.
  • Reservoir 42 has a series of baffles 43 projecting thereinto from the side walls defining reservoir 42.
  • An outlet 44 is provided at the upper portion of reservoir 42.
  • reservoir 42 and baffles 43 will be discussed in detail hereinafter. At this point, it is only necessary to appreciate that any liquid entering inlet chamber 37 will pass upwardly through lower screen 34, through resin chamber 32, through upper screen 33 and into outlet chamber 38. From outlet chamber 38, the liquid will pass through port 39, downwardly through passageway 4i), then through port 41 into reservoir 42. The liquid will then flow upwardly through reservoir 42 and out through outlet 44.
  • reservoir 42 and resin chamber 32 are preferably formed integrally of a molded plastic compound.
  • a water inlet conduit 45 is suitably connected to a source of hard water (not shown).
  • conduit 45 would be connected to the faucet associated with the kitchen sink by means of a connecting device (not shown).
  • Water entering dishwasher 10 through conduit 45 encounters two electricallyoperated valve 46 and 47.
  • Valve 46 is operated by a solenoid 48 while valve 47 is operated by a solenoid 49.
  • solenoid 48 opens valve 46, water passes from conduit 45 through valve 46 into conduit 5:).
  • Water passing through conduit 50 enters inlet chamber 37 of Water softener 30 to pass through water softener 3t in the manner described above. This water will pass from reservoir 42 through outlet 44- and then into conduit 51.
  • Conduit 51 extends across dishwasher 18 below wall 17 and then upwardly outside of wash chamber 12 in a compartment 52 defined by a housing 53 secured to, but having a wall spaced from, outer cabinet 11. Conduit 51 terminates in an inverted U-shaped nozzle 5 which directs the water into a fill funnel 55 formed in the front wall of outer cabinet 11. Fill funnel 55 directs the water issuing from nozzzle 54 into wash chamber 12.
  • valve 47 is opened by solenoid 49 and water is allowed to pass through valve 47 into conduit 56.
  • Conduit 56 extends up into compartment 52 and terminates at a regenerating agent container 57.
  • Container 57 is provided with a funnel-like inlet 58 so that regenerating agent may be inserted into container 57 conveniently.
  • Inlet 58 is provided with a removable cap 59 which prevents water or wash fluid from entering container 59 during rinse or Wash operation of the dishwasher and prevents leakage out of container 57.
  • Conduit 60 extends down through compartment 52 and across dishwasher 10 below bottom Wall 17 and terminates at water softener Si) in a manner wherein it communicates with inlet chamber 37.
  • the regenerating solution entering inlet chamber 37 will, from that point on, follow the course described above with respect to water entering inlet chamber 37 from conduit 50.
  • the most suitable regenerating agent for the ion-exchange media described above is ordinary table salt (sodium chloride).
  • the water passing through container 57 creates a saline solution and it is this saline solution which passes through'conduit 6i) and up through the ion-exchange media within resin chamber 32.
  • the granules release calcium ions in exchange for sodium ions released by the saline solution in a manner well known in the water softening art.
  • the regenerating solution maintains a relatively high degree of salinity after regenerating the ion-exchange media. This high degree of salinity would prove corrosive to the components of the dishwasher if it were immediately admitted to the dishwasher and allowed to remain therein for any substantial length of time. Accordingly, the present invention makes provisions to minimize the possibility of corrosion of dishwasher elements.
  • the conventional methods of regenerating an ion-exchange media in a water softener include a continuous method wherein a saline solution of about 10% salinity is continuously passed through the ion-exchange media at a very low flow rate which, for the above system, would approximate .01 gallon per minute.
  • Another conventional method is that of batch regeneration which involves applying a very concentrated saline solution of about 25% salinity to the ion-exchange media and allowing it to remain in contact with the media for approximately one-half hour.
  • the continuous regeneration method is most widely used and most efficiently regenerates the ion-exchange media
  • the continuous method requires very accurate flow control of the saline solution when the resin chamber is small and it requires a greater quantity of saline solution than the batch method.
  • the batch method is less efficient since it will only regenerate the media as long as the salinity is sufliciently high to cause regeneration and this salinity decreases as the individual particles of the ion-exchange media are regenerated. An equilibrium condition is reached at which point no further regeneration occurs.
  • a modified regeneration method includes, in the preferred form of the present invention, a double charge of regenerating solution with the first charge remaining in contact with the ion-exchange media throughout substantially all of the drying portion of the dishwasher operational cycle while the second charge remains in contact with the ion-exchange media from the termination of the drying portion of the operational cycle until the dishwasher is next employed to wash dishes.
  • a sequence control means is provided and includes a synchronous timer motor 61 which drives a plurality of cams 62, 63, 64, 65, 66 and 67 which control, respectively, switch elements 63, 69, 7h, 71, 72 and 73.
  • a manually operable control knob 74 extends beyond outer cabinet 11, preferably through housing 53 with the remainder of the sequence control means being housed Within compartment 52, for convenient manual rotation to initiate operation of the sequence control means.
  • the sequence control means and knob 74 are not seen in FIGURE 1 because of the portion of housing 53 being cut away to mor clearly illustrate regeneratin agent container 57.
  • Switch element 68 controls energization of timer motor 61 so that when control knob 74 is initially manually rotated a few degrees, cam 62 closes switch element 68 thereby energizing timer motor 61. From that moment on, timer motor 61 will continue to drive all cams throughout a complete dishwasher operational cycle. Power is introduced to the control systetm through terminals L and L A master switch 75 is operative with the closing of door 13 such that the control system cannot be energized until door 13 is securely closed.
  • Switch 69 controls the energization of solenoid 49 which, as explained above, opens valve 47 when energized.
  • switch element 70 controls energization of solenoid 48 which opens valve 46 when energized.
  • Switch element 71 controls energization of heating element 25.
  • Switch element 72 controls the direction in which motor 20 will rotate and this is accomplished by energizing either of two start windings 76 or 77. If switch element 72 is in its uppermost position, start winding 76 will be energized which will result in motor 20 rotating in a direction whereby pump 21 will propel fluid upwardly through spray arm 24. When switch element 72 is in its lowermost position, start winding 77 will be energized thereby causing motor 20 to rotate in a direction whereby pump 21 will propel fluid out through efiiuent discharge 32.
  • Switch element 73 controls the energization of main winding 78 as well as controlling the energization of both start windings 76 and 77 due to the series electrical circuit relationship between switch element 72 and switch element 73.
  • a start winding cut-out switch '79 includes a solenoid 80 in electrical series circuit with main winding 78 of motor 20 and mechanically linked to a switch 81 which is in electrical series with both start windings 76 and 77.
  • Start winding cut-out switch 79 is arranged so that when motor 20 reaches essentially its normal running speed, the current passing through solenoid 80 causes solenoid 80 to open switch 81 thereby de-energizing whichever start winding had been energized.
  • FIGURE 4 sets forth the sequence of opening and closing for each of the switches 68, 69, 70, 71, 72 and 73.
  • This sequence provides a complete operational cycle for the dishwasher which includes the following periods or cycle: an initial flush of approximately two minutes duration during which valve 46 is opened and motor 20 is driving pump 21 in a direction wherein fluid is pumped out through eflluent discharge 23; a fill period wherein valve 46 is opened to admit water to wash chamber 12; a rinse period wherein motor 20 is energized in a direction whereby pump 21 propels the Water admitted during the prior fill period up through spray arm 24 to effect a rinse of the articles supported by racks 15 and 16; a drain period wherein motor 20 drives pump 21 to force the water out through eflluent discharge 23.
  • the fill, rinse and drain periods are repeated to provide a second rinse. This is followed by a fill period which in turn is followed by an elongated period during which detergent is added to the water and pump 21 propels the water-detergent solution up through spray arm 24 to effect a wash action upon articles supported by racks 15 and 16. This is followed by a drain period. There then occurs two rinses similar to the rinses described above. The drain period of the final rinse is followed by a drying cycle wherein heating element 25 is energized for approximately twenty minutes.
  • heating element 25 may be intermittently energized and de-energized to control the quantity of heat generated within wash chamber 12 or, alternatively, a thermostat may be placed in series with switch 71 to control the energization of heating element 25 in response to the temperature within wash chamber 12.
  • Switch 69 is closed for approximately one minute at the initial portion of the drying cycle which allows water to pass through regenerating agent container 57 and then into resin chamber 32.
  • the length of time during which switch 69 is closed is determined by the flow rate provided by the particular valve 47 employed. In the particular embodiment of the present invention wherein switch 69 is closed for approximately one minute, valve 47 has a flow rate of approximately one-tenth gallon per minute. In any event, switch 69 is closed for a length of time sufiicient to allow regenerating solution to enter resin chamber 32 in a quantity suflicient to substantially fill resin chamber 32.
  • the chart of FIGURE 4 shows that this regenerating solution will remain in the resin chamber 32 for approximately eighteen minutes at which time switch 69 is again closed to energize solenoid 49 and open valve 47 to admit a second charge of regenerating solution into resin chamber 32.
  • This second charge of regenerating solution will remain in contact with the ion-exchange media in chamber 32 until the dishwasher is next employed to wash dishes at which time the cycle of operation illustrated in FIGURE 4 will start over.
  • Reservoir 42 serves to receive and contain the first charge of regenerating solution as it is forced from chamber 32 by the second charge of regenerating solution.
  • switch 76 opens valve 46 at the beginning of the cycle to admit fresh Water into water softener 30.
  • switches 72 and 73 energize motor 20 in a direction which causes pump 21 to propel fluids entering pump 21 out through eflluent discharge 23.
  • the saline solution is forced up through condiut 51 into wash chamber 12 where it collects in sump 18 and is immediately withdrawn by pump 21 and forced out through discharge 32.
  • the control system of the present invention provides an initial flush of fresh water with the pump operating in the drain condition so that the saline solution is, within a few seconds, transferred from water softener 30 into the household sewer system.
  • the present invention includes means to minimize the possibility of the first charge of regenerating solution passing through reservoir 42 and into wash chamber 12. This is achieved by providing the plurality of baflles 43 in reservoir 42 which causes any fluid passing through reservoir 42 to follow a tortuous path. This greatly minimizes the possibility that the regenerating agent will short circuit from port 41 directly to outlet 44 without forcing out ahead of it the fresh water remaining in reservoir 42 from the prior use of dishwasher 10.
  • the ion-exchange media will not completely fill chamber 32 but will extend to a level spaced from screen 33 a short distance as illustrated in FIGURE 2.
  • This head room allows the granules of ion-exchange media to fluff upwardly as water or regenerating solution passes through chamber 32. This limited movement and resettling of the granules enhances the efliciency of both the softening process and the regenerating process.
  • the head room thus provided, along with the outlet chamber 38, provides additional volume to contain the first charge of regenerating solution when the second charge is admitted to the softener.
  • the present invention provides an automatic dishwasher, or other automatic washing machine, with an arrangement which effects automatic regeneration of the ion-exchange media of the water softener without elongation of the overall operational cycle and which also minimizes corrosive action by the regenerative solution upon the components of the dishwasher by providing suitable handling means for the regenerative solution before, during and following the regeneration of the ion-exchange media.
  • a water softener for an automatic washing machine having a wash chamber comprising:
  • bafiie means within said reservoir to provide a tortuous path for regenerative solution passing through said reservoir
  • (f) means providing communication between said reservoir and the wash chamber of the automatic washing machine whereby regenerating solution passing from said reservoir enters the wash chamber.
  • An automatic dishwasher comprising:
  • (j) means interconnecting said container and said water softener whereby said ion-exchange media is regenerated when said second valve is opened, and
  • (k) sequence control means to energize and de-energize said electric motor, said heating element, said first valve and said second valve in predetermined sequence comprising:
  • (bb) means to open said second valve at approximately the same time that said means to energize said heating element energizes said heating element for a length of time sufficient to allow a quantity of liquid into said water softener having a volume substantially the same as the volume of the water softener,
  • said means to open said second valve being adapted to open said second valve a second time at approximately the same time that said means to energize said heating element operates to deenergize said heating element.
  • An automatic dishwasher comprising:
  • a water softener including a resin chamber communicating with said wash chamber
  • a regenerating agent container to contain an agent for regenerating said ion-exchange resin
  • water admitting means having a first operative condition to admit water directly to said resin chamber and a second operative condition to admit water to said regenerating agent container,
  • said regenerating agent container communicating with said resin chamber whereby water admitted to said regenerating agent container will pick up regenerating agent and subsequently pass into said resin chamber to regenerate said ion-exchange resin
  • said sequence control means including means to operate said water admitting means in said second operative condition during the early portion of said drying operation and again during the latter portion of said drying operation.
  • An automatic dishwasher comprising:
  • said means within said sequence control means further energizing said regenerating system at approximately the same time the said drying cycle terminates.
  • each energization of said regenerating system lasts for approximately one minute and said drying cycle lasts for approximately twenty minutes.
  • said water softener includes a resin chamber containing ion-exchange media and said energization of said regenerating system admits a quantity of regenerating solution to said resin chamber suiiici-ent, when added to said ion-exchange media, to substantially fill said resin chamber.
  • a reservoir is disposed downstream from said resin chamber and receives all liquid leaving said resin chamber, said reservoir having a capacity sufficient to contain a quantity of liquid approximately equal to the quantity of regenerating solution admitted by each energization of said regenerating system.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Washing And Drying Of Tableware (AREA)
US538707A 1966-03-30 1966-03-30 Dishwasher with integral water softener Expired - Lifetime US3386454A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US538707A US3386454A (en) 1966-03-30 1966-03-30 Dishwasher with integral water softener
GB7969/67A GB1182341A (en) 1966-03-30 1967-02-20 An Automatic Washing Machine for Dishes, Clothes or the like
NL6703336A NL6703336A (de) 1966-03-30 1967-02-28
CH417067A CH455695A (de) 1966-03-30 1967-03-22 Automatische Waschmaschine für Wäsche oder Geschirr
SE4297/67A SE325115B (de) 1966-03-30 1967-03-29
DK162667AA DK119248B (da) 1966-03-30 1967-03-29 Fremgangsmåde til blødgøring af vand i en vaske- og opvaskemaskine.
DE19671628612 DE1628612A1 (de) 1966-03-30 1967-03-30 Automatische Waschmaschine fuer Geschirr,Kleider od.dgl.
FR100868A FR1517298A (fr) 1966-03-30 1967-03-30 Machine à laver la vaisselle à adoucisseur d'eau

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US538707A US3386454A (en) 1966-03-30 1966-03-30 Dishwasher with integral water softener

Publications (1)

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US3386454A true US3386454A (en) 1968-06-04

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Application Number Title Priority Date Filing Date
US538707A Expired - Lifetime US3386454A (en) 1966-03-30 1966-03-30 Dishwasher with integral water softener

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US (1) US3386454A (de)
CH (1) CH455695A (de)
DE (1) DE1628612A1 (de)
DK (1) DK119248B (de)
FR (1) FR1517298A (de)
GB (1) GB1182341A (de)
NL (1) NL6703336A (de)
SE (1) SE325115B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4345609A (en) * 1979-08-28 1982-08-24 Hideyuki Nishizawa Rinsing and drying apparatus
DE4413432C1 (de) * 1994-04-18 1995-08-31 Bauknecht Hausgeraete Programmgesteuerte Geschirrspülmaschine
US6557382B1 (en) * 1999-09-20 2003-05-06 Hitachi, Ltd. Washing machine
US20040103930A1 (en) * 2002-11-28 2004-06-03 Lg Electronics Inc. Dishwasher
US20040177654A1 (en) * 2003-03-12 2004-09-16 Miele & Cie. Kg Dishwasher having a water softener with a salt container located in the dishwasher door
US20100012569A1 (en) * 2007-03-07 2010-01-21 Ambroiggio Michael A Hot water filter for a dishwasher
US20150122299A1 (en) * 2012-05-30 2015-05-07 Arcelik Anonim Sirketi Dishwasher comprising a detergent dispenser

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3028743C2 (de) * 1980-07-29 1982-12-23 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Enthärtungseinrichtung für Geschirrspülmaschinen
IT1156468B (it) * 1982-05-07 1987-02-04 Indesit Macchina per lavare con procedimento perfezionato di rigenerazione delle resine
EP1319360B1 (de) * 2001-12-06 2004-04-14 CANDY S.p.A. Haushaltsgeschirrspülmaschine mit einer Tür, die ein einer Vertiefung aufweisenden Paneel aufweist, sowie einen Geschirrspülmitteldosierbehälter, der vom oberen Geschirrkorb gestützt ist

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US653011A (en) * 1899-12-20 1900-07-03 Charles Herschel Koyl Apparatus for purifying water.
US1450054A (en) * 1921-04-04 1923-03-27 Walter E Titus Water-treating attachment for washing machines, etc.
GB227707A (en) * 1924-05-22 1925-01-22 John Brandwood Improvements in and relating to water softening apparatus
US3087504A (en) * 1960-04-14 1963-04-30 Constructa Werke Gmbh Dishwasher
GB962507A (en) * 1961-10-03 1964-07-01 Constructa Werke Gmbh Improvements relating to domestic washing machines
US3148687A (en) * 1961-05-20 1964-09-15 Dosch Paul Article washing machine including a water softening arrangement

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US653011A (en) * 1899-12-20 1900-07-03 Charles Herschel Koyl Apparatus for purifying water.
US1450054A (en) * 1921-04-04 1923-03-27 Walter E Titus Water-treating attachment for washing machines, etc.
GB227707A (en) * 1924-05-22 1925-01-22 John Brandwood Improvements in and relating to water softening apparatus
US3087504A (en) * 1960-04-14 1963-04-30 Constructa Werke Gmbh Dishwasher
US3148687A (en) * 1961-05-20 1964-09-15 Dosch Paul Article washing machine including a water softening arrangement
GB962507A (en) * 1961-10-03 1964-07-01 Constructa Werke Gmbh Improvements relating to domestic washing machines

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4345609A (en) * 1979-08-28 1982-08-24 Hideyuki Nishizawa Rinsing and drying apparatus
DE4413432C1 (de) * 1994-04-18 1995-08-31 Bauknecht Hausgeraete Programmgesteuerte Geschirrspülmaschine
US6557382B1 (en) * 1999-09-20 2003-05-06 Hitachi, Ltd. Washing machine
US20040103930A1 (en) * 2002-11-28 2004-06-03 Lg Electronics Inc. Dishwasher
US20040177654A1 (en) * 2003-03-12 2004-09-16 Miele & Cie. Kg Dishwasher having a water softener with a salt container located in the dishwasher door
US7124765B2 (en) * 2003-03-12 2006-10-24 Miele & Cie, Kg Dishwasher having a water softener with a salt container located in the dishwasher door
US20100012569A1 (en) * 2007-03-07 2010-01-21 Ambroiggio Michael A Hot water filter for a dishwasher
US20150122299A1 (en) * 2012-05-30 2015-05-07 Arcelik Anonim Sirketi Dishwasher comprising a detergent dispenser
US10172508B2 (en) * 2012-05-30 2019-01-08 Arcelik Anonim Sirketi Dishwasher comprising a detergent dispenser

Also Published As

Publication number Publication date
FR1517298A (fr) 1968-03-15
SE325115B (de) 1970-06-22
DE1628612A1 (de) 1971-05-06
GB1182341A (en) 1970-02-25
NL6703336A (de) 1967-10-02
CH455695A (de) 1968-07-15
DK119248B (da) 1970-11-30

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