WO2005115216A1 - A washing machine with a flood-preventing mechanism - Google Patents

A washing machine with a flood-preventing mechanism Download PDF

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Publication number
WO2005115216A1
WO2005115216A1 PCT/IB2005/051700 IB2005051700W WO2005115216A1 WO 2005115216 A1 WO2005115216 A1 WO 2005115216A1 IB 2005051700 W IB2005051700 W IB 2005051700W WO 2005115216 A1 WO2005115216 A1 WO 2005115216A1
Authority
WO
WIPO (PCT)
Prior art keywords
switch
float
water
lever
water inflow
Prior art date
Application number
PCT/IB2005/051700
Other languages
French (fr)
Inventor
Ferhan Ercin
Ender Cengiz
Original Assignee
Arcelik Anonim Sirketi
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.)
Filing date
Publication date
Application filed by Arcelik Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Priority to DE112005001193T priority Critical patent/DE112005001193B4/en
Priority to TR2006/06459T priority patent/TR200606459T1/en
Publication of WO2005115216A1 publication Critical patent/WO2005115216A1/en

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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
    • A47L15/421—Safety arrangements for preventing water damage
    • 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
    • D06F39/081—Safety arrangements for preventing water damage
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/18—Switches operated by change of liquid level or of liquid density, e.g. float switch

Definitions

  • This invention relates to a washing machine, such as a laundry washer or a dishwasher, wherein means are provided to prevent the water used in the washing process from flooding.
  • overflows may occur because of a leakage in the water circulation system, a failure in the water inflow valve or excessive water intake to the machine.
  • devices such devices as floats and pneumatic safety valves or such methods as measuring of the flow rate of the excess intake water, are developed.
  • overflow water is accumulated in a chamber so as to raise the float and, either excess water is discharged to the outside of the machine by means of a discharge pump triggered by a mi- croswitch activated meanwhile or, the intake of water to the machine is stopped.
  • a water level control device utilized in washers, is mentioned.
  • the said device comprises of a float positioned in a chamber at a different location than the liquid container and a safety level switch operating interactively with the mentioned float.
  • the safety level switch is used to turn on the discharge pump and selectably to close the water inflow valve.
  • the level where the float turns on the switch is the level where it activates the discharge pump; as the liquid level reaches a predetermined level above the static content level, the water inflow valve is deactivated; as the liquid level decreases back to the static content level, the float deactivates the discharge pump by means of said switch.
  • a dishwasher control circuit includes a switch, controlling overflows, which is connected to the solenoids controlling the water inflow valve and the discharge pump under normal operating conditions.
  • a switch controlling overflows, which is connected to the solenoids controlling the water inflow valve and the discharge pump under normal operating conditions.
  • continuous protection against flooding is achieved by establishing a connection between the discharge pump and a direct main power line during flooding conditions.
  • the aim of the present invention is the realization of a washing machine, preferably a dishwasher or a laundry washer, wherein means are provided to effectively prevent the overflows at a low cost.
  • FIG.1 - is a schematic view of a washing machine.
  • Fig.2 - is a perspective view of a flood-preventing mechanism.
  • FIG.3 - is a perspective view of the body of a flood-preventing mechanism.
  • Fig.4 - is a front view of a flood-preventing mechanism.
  • Fig.5 - is a perspective view of a lever.
  • Fig.6 - is a schematic view of the control circuit of a flood-preventing mechanism, before the flood.
  • Fig.7 - is a schematic view of the control circuit of a flood-preventing mechanism, after the flood.
  • the washing machine (1) preferably a dishwasher or a laundry washer, comprises a control card (2), a water inflow valve (3), providing intake of water, which (3) is closed as default and opens if energized, a discharge pump (4) whereby washing fluid is discharged and, a flood-preventing mechanism (5) utilized to prevent an overflow caused by the excess intake water or leakages in the circulation system.
  • the flood-preventing mechanism (5) comprises a float (6) which is raised by the overflow water collected in a chamber, a discharge switch (7) which is inactive before the overflow and is activated by being triggered by the float (6) as it is raised during the overflow and, whereby the discharge pump (4) is turned on to discharge overflow water, a water inflow switch (8) which is active before the overflow and allows water intake to the washing machine (1) by means of the water intake valve (3) as it is in active position, and which is deactivated by being triggered by the float (6) as it is raised during the overflow and stops water intake from the outside by closing the water inflow valve (3) as it is in inactive position, a lever (9) triggering both the discharge switch (7) and the water inflow switch (8) at the same time when it is actuated by the float (6) at a single point as the said float (6) is raised during the overflow and, a mechanism body (10) where the lever (9) and the switches are mounted onto (Figure 2, 3 and 4).
  • the mechanism body (10) comprises a lever pin (11) pivoting the lever (9) and two switch housings (12) used to fix the position of the switches (7, 8) so that they can be triggered by the lever (9).
  • the lever (9) incorporates a hub (13) used to pivot the lever (9) such that it can rotate about the lever pin (11), a discharge switch trigger arm (14), extending at a side of the said hub (13), which contacts the discharge switch (7) by being pushed by the afore-mentioned float (6) and changes its on-off position, a water inflow switch trigger arm (15) extending at the other side of the hub (13), activated by the discharge switch trigger arm (14), which (15) contacts the water inflow switch and changes its on-off position and, one or more than one rib (16) located around the hub (13), used to prevent the arms (14, 15) from getting crooked under the effect of temperature and humidity by reinforcing their structure (Figure 5).
  • the discharge switch (7) is directly energized after the on-off switch (A) turns on the washing machine (1) and it turns on the discharge pump (4) when actuated by the float (6). Since the discharge pump (4) is connected in parallel with the control card (2), it can be operated if needed during the washing cycle, by the control card (2) as the discharge switch (7) is on or off.
  • the water inflow switch (8) is energized through the control card (2) and, the control card (2) and the water inflow switch (8) are connected in series with the water inflow valve (3).
  • the discharge switch (7) is energized by the network, before the on-off switch (A) turns on the washing machine (1). Thereby, even when the washing machine (1) is not operating, if there is any overflow because of a leakage, the float (6) raises and activates the discharge switch (7), turning on the discharge pump (4).
  • the object of the present invention in case of a flood, it is achieved that the overflow water is completely discharged in a simple manner and that water intake to the washing machine (1) is stopped.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Washing And Drying Of Tableware (AREA)

Abstract

This invention relates to a washing machine (1), preferably a dishwasher or a laundry washer, wherein overflows that occur because of a leakage in the water circulation system, a failure in the water inflow valve (3) or excessive water intake are prevented by means of a flood-preventing mechanism (5) activated by a float (6) which is raised by the overflow water collected in a chamber. The flood-preventing mechanism (5) comprises a lever (9) which triggers both a discharge switch (7) and a water inflow switch (8) at the same time, when it is actuated by the float (6).

Description

Description A WASHING MACHINE WITH A FLOOD-PREVENTING MECHANISM
[001] This invention relates to a washing machine, such as a laundry washer or a dishwasher, wherein means are provided to prevent the water used in the washing process from flooding.
[002] In dishwashers, overflows may occur because of a leakage in the water circulation system, a failure in the water inflow valve or excessive water intake to the machine. In the current state of the art, in order to prevent said overflows, such devices as floats and pneumatic safety valves or such methods as measuring of the flow rate of the excess intake water, are developed. In the method utilizing a float, overflow water is accumulated in a chamber so as to raise the float and, either excess water is discharged to the outside of the machine by means of a discharge pump triggered by a mi- croswitch activated meanwhile or, the intake of water to the machine is stopped.
[003] In the European Patent Document EP 0951860, a description is given of a device which is used to prevent overflows in laundry washers or dishwashers. In the said device preventing overflows, in order for the water in the hydraulic network not to leak from any component of the machine, a microswitch is activated as a float placed in the chassis at the bottom of the machine, suitable to collect the overflow water, raises due to a water flood, closes the water inflow valve and usually activates the water discharge pump. Moreover, it is disclosed that there is provided a hole, located in the chassis, which is water-tightly closed by a diaphragm-shaped member so that the float can be moved by pushing upwards of the said diaphragm.
[004] In the United States Patent Document US 5309939, a water level control device, utilized in washers, is mentioned. The said device comprises of a float positioned in a chamber at a different location than the liquid container and a safety level switch operating interactively with the mentioned float. The safety level switch is used to turn on the discharge pump and selectably to close the water inflow valve. The level where the float turns on the switch is the level where it activates the discharge pump; as the liquid level reaches a predetermined level above the static content level, the water inflow valve is deactivated; as the liquid level decreases back to the static content level, the float deactivates the discharge pump by means of said switch.
[005] In the European Patent Document EP 0958777, there is a mention of a device used in dishwashers or laundry washers, to regulate water level during washing. The said device incorporates a float, inside a floatation chamber, which interacts with an auxiliary chamber inside the water tank. A rod located inside the mentioned auxiliary chamber causes the vertical movement of the float between two water levels, activating the pivoting lever and thereby the microswitch. Said microswitch prevents the intake of water by closing the water inflow valve. The operating lever is impelled by an intermediate mechanism which is independent of the float, to occupy only two stable positions relative to the microswitch.
[006] In the United States Patent Document US 4069425, a description is given of an application wherein a dishwasher control circuit includes a switch, controlling overflows, which is connected to the solenoids controlling the water inflow valve and the discharge pump under normal operating conditions. In the dishwasher, continuous protection against flooding is achieved by establishing a connection between the discharge pump and a direct main power line during flooding conditions.
[007] The aim of the present invention is the realization of a washing machine, preferably a dishwasher or a laundry washer, wherein means are provided to effectively prevent the overflows at a low cost.
[008] The washing machine realized in order to attain above mentioned aim of the present invention is illustrated in the attached figures where:
[009] Fig.1 - is a schematic view of a washing machine.
[010] Fig.2 - is a perspective view of a flood-preventing mechanism.
[011] Fig.3 - is a perspective view of the body of a flood-preventing mechanism.
[012] Fig.4 - is a front view of a flood-preventing mechanism.
[013] Fig.5 - is a perspective view of a lever.
[014] Fig.6 - is a schematic view of the control circuit of a flood-preventing mechanism, before the flood.
[015] Fig.7 - is a schematic view of the control circuit of a flood-preventing mechanism, after the flood.
[016] The elements shown in the figures are numbered individually as follows: 1. Washing machine 2. Control card 3. Water inflow valve 4. Discharge pump 5. Flood-preventing mechanism 6. Float 7. Discharge switch 8. Water inflow switch 9. Lever 10. Mechanism body 11. Lever pin 12. Switch housing 13. Hub 14. Discharge switch trigger arm 15. Water inflow switch trigger arm 16. Rib
[017] The washing machine (1), preferably a dishwasher or a laundry washer, comprises a control card (2), a water inflow valve (3), providing intake of water, which (3) is closed as default and opens if energized, a discharge pump (4) whereby washing fluid is discharged and, a flood-preventing mechanism (5) utilized to prevent an overflow caused by the excess intake water or leakages in the circulation system.
[018] The flood-preventing mechanism (5) comprises a float (6) which is raised by the overflow water collected in a chamber, a discharge switch (7) which is inactive before the overflow and is activated by being triggered by the float (6) as it is raised during the overflow and, whereby the discharge pump (4) is turned on to discharge overflow water, a water inflow switch (8) which is active before the overflow and allows water intake to the washing machine (1) by means of the water intake valve (3) as it is in active position, and which is deactivated by being triggered by the float (6) as it is raised during the overflow and stops water intake from the outside by closing the water inflow valve (3) as it is in inactive position, a lever (9) triggering both the discharge switch (7) and the water inflow switch (8) at the same time when it is actuated by the float (6) at a single point as the said float (6) is raised during the overflow and, a mechanism body (10) where the lever (9) and the switches are mounted onto (Figure 2, 3 and 4).
[019] As the lever (9) activates the discharge switch (7) as a result of the effect of the float (6) is raised by the overflow, it deactivates the water inflow switch (8) and, as it deactivates the discharge switch (7) when the float (6) is lowered as a result of the water discharge, it activates the water inflow switch (8).
[020] The mechanism body (10) comprises a lever pin (11) pivoting the lever (9) and two switch housings (12) used to fix the position of the switches (7, 8) so that they can be triggered by the lever (9).
[021] The lever (9) incorporates a hub (13) used to pivot the lever (9) such that it can rotate about the lever pin (11), a discharge switch trigger arm (14), extending at a side of the said hub (13), which contacts the discharge switch (7) by being pushed by the afore-mentioned float (6) and changes its on-off position, a water inflow switch trigger arm (15) extending at the other side of the hub (13), activated by the discharge switch trigger arm (14), which (15) contacts the water inflow switch and changes its on-off position and, one or more than one rib (16) located around the hub (13), used to prevent the arms (14, 15) from getting crooked under the effect of temperature and humidity by reinforcing their structure (Figure 5).
[022] During the operation of the washing machine (1), the discharge switch (7) is directly energized after the on-off switch (A) turns on the washing machine (1) and it turns on the discharge pump (4) when actuated by the float (6). Since the discharge pump (4) is connected in parallel with the control card (2), it can be operated if needed during the washing cycle, by the control card (2) as the discharge switch (7) is on or off. During the operation of the washing machine (1), after the on-off switch (A) turns on the washing machine (1), the water inflow switch (8) is energized through the control card (2) and, the control card (2) and the water inflow switch (8) are connected in series with the water inflow valve (3).
[023] In another preferred embodiment of the present invention, the discharge switch (7) is energized by the network, before the on-off switch (A) turns on the washing machine (1). Thereby, even when the washing machine (1) is not operating, if there is any overflow because of a leakage, the float (6) raises and activates the discharge switch (7), turning on the discharge pump (4).
[024] Under normal operating conditions where there isn't any overflow, the discharge pump (4) does not operate since the discharge switch (7) is inactive as the float (6) is at lower position. Meanwhile, the water inflow switch (8) that is kept in active position by the lever (9) permits the water inflow valve (3) to be kept open by just completing the circuit and, the water inflow valve (3) may be opened and closed by the control card (2) if needed during the washing cycle (Figure 6).
[025] The float (6) that is raised during an overflow activates the discharge switch (7) and thus, the discharge pump (4) is turned on. At the same time, the water inflow switch (8) deactivated by the lever (9) cuts off the energy supplied to the water inflow valve (3), closing the water inflow valve (3) which stays closed if not energized, thereby stopping water intake to the washing machine (1). Since the control card (2) and the water inflow switch (8) are connected in series with the water inflow valve (3), it is achieved that the water inflow valve (3) is kept closed even if the control card (2) gives an order to open it (Figure 7).
[026] In the washing machine (1), the object of the present invention, in case of a flood, it is achieved that the overflow water is completely discharged in a simple manner and that water intake to the washing machine (1) is stopped.
[027]

Claims

Claims
[001] A washing machine (1) comprising; a control card (2); a water inflow valve (3) providing intake of water and; a discharge pump (4) whereby washing fluid is discharged; and characterized by a flood-preventing mechanism (5) which comprises a float (6) which is raised by the overflow water collected in a chamber, a discharge switch (7) that turns on the discharge pump (4) as the float (6) is raised, a water inflow switch (8) that turns off the water inflow valve (3) as the float is raised and, a lever (9) triggering both the discharge switch (7) and the water inflow switch (8) at the same time when it is actuated by the float (6) at a single point as the said float (6) is raised during the overflow.
[002] A washing machine (1) as described in Claim 1, characterized by a flood- preventing mechanism (5) which comprises a lever (9) wherein as it activates the discharge switch (7) as a result of the effect of the float (6) raised by the overflow, it deactivates the water inflow switch (8) and, as it deactivates the discharge switch (7) when the float (6) is lowered as a result of the water discharge, it activates the water inflow switch (8).
[003] A washing machine (1) as described in Claims 1 or 2, characterized by a flood- preventing mechanism (5) which comprises a lever (9) having a discharge switch trigger arm (14) which contacts the discharge switch (7) by being pushed by the float (6) and changes its on-off position and, a water inflow switch trigger arm (15), activated by the discharge switch trigger arm (14), which (15) contacts the water inflow switch and changes its on-off position.
[004] A washing machine (1) as described in any of the above Claims, characterized by a flood-preventing mechanism (5) which comprises a mechanism body (10) having a lever pin (11) pivoting the lever (9) and two switch housings (12) used to fix the position of the switches (7, 8) so that they can be triggered by the lever (9).
[005] A washing machine (1) as described in Claim 4, characterized by a flood- preventing mechanism (5) which comprises a lever (9) having a hub (13) used to pivot the lever (9) such that it can rotate about the lever pin (11) and, one or more than one rib (16) located around the hub (13).
PCT/IB2005/051700 2004-05-25 2005-05-25 A washing machine with a flood-preventing mechanism WO2005115216A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112005001193T DE112005001193B4 (en) 2004-05-25 2005-05-25 Washing machine with a flooding prevention device
TR2006/06459T TR200606459T1 (en) 2004-05-25 2005-05-25 A washing machine that prevents water from overflowing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2004/01164 2004-05-25
TR200401164 2004-05-25

Publications (1)

Publication Number Publication Date
WO2005115216A1 true WO2005115216A1 (en) 2005-12-08

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PCT/IB2005/051700 WO2005115216A1 (en) 2004-05-25 2005-05-25 A washing machine with a flood-preventing mechanism

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DE (1) DE112005001193B4 (en)
TR (1) TR200606459T1 (en)
WO (1) WO2005115216A1 (en)

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EP1970481A1 (en) * 2007-03-14 2008-09-17 Vestel Beyaz Esya Sanayi Ve Ticaret A.S. Overflow detection apparatus
ITTO20100710A1 (en) * 2010-08-25 2012-02-26 Bitron Spa SAFETY SYSTEM ANTI-GLAZING FOR WASHING APPLIANCES
US8627832B2 (en) 2010-12-13 2014-01-14 Whirlpool Corporation Rotating filter for a dishwashing machine
US8667974B2 (en) 2009-12-21 2014-03-11 Whirlpool Corporation Rotating filter for a dishwashing machine
US8733376B2 (en) 2011-05-16 2014-05-27 Whirlpool Corporation Dishwasher with filter assembly
US8746261B2 (en) 2009-12-21 2014-06-10 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US9005369B2 (en) 2011-06-20 2015-04-14 Whirlpool Corporation Filter assembly for a dishwasher
US9010344B2 (en) 2011-06-20 2015-04-21 Whirlpool Corporation Rotating filter for a dishwashing machine
US9034112B2 (en) 2010-12-03 2015-05-19 Whirlpool Corporation Dishwasher with shared heater
US9107559B2 (en) 2011-05-16 2015-08-18 Whirlpool Corporation Dishwasher with filter assembly
US9113766B2 (en) 2010-11-16 2015-08-25 Whirlpool Corporation Method and apparatus for dishwasher with common heating element for multiple treating chambers
US9119515B2 (en) 2010-12-03 2015-09-01 Whirlpool Corporation Dishwasher with unitary wash module
US9237836B2 (en) 2012-05-30 2016-01-19 Whirlpool Corporation Rotating filter for a dishwasher
US9265401B2 (en) 2011-06-20 2016-02-23 Whirlpool Corporation Rotating filter for a dishwashing machine
US9301667B2 (en) 2012-02-27 2016-04-05 Whirlpool Corporation Soil chopping system for a dishwasher
US9451862B2 (en) 2012-06-01 2016-09-27 Whirlpool Corporation Dishwasher with unitary wash module
US9532700B2 (en) 2012-06-01 2017-01-03 Whirlpool Corporation Dishwasher with overflow conduit
US9554688B2 (en) 2012-10-23 2017-01-31 Whirlpool Corporation Rotating filter for a dishwasher and methods of cleaning a rotating filter
US9668636B2 (en) 2010-11-16 2017-06-06 Whirlpool Corporation Method and apparatus for dishwasher with common heating element for multiple treating chambers
US9687135B2 (en) 2009-12-21 2017-06-27 Whirlpool Corporation Automatic dishwasher with pump assembly
US9730570B2 (en) 2012-05-30 2017-08-15 Whirlpool Corporation Reduced sound with a rotating filter for a dishwasher
US9833120B2 (en) 2012-06-01 2017-12-05 Whirlpool Corporation Heating air for drying dishes in a dishwasher using an in-line wash liquid heater
US9861251B2 (en) 2011-06-20 2018-01-09 Whirlpool Corporation Filter with artificial boundary for a dishwashing machine
US9918609B2 (en) 2009-12-21 2018-03-20 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US10653291B2 (en) 2011-06-20 2020-05-19 Whirlpool Corporation Ultra micron filter for a dishwasher

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Publication number Priority date Publication date Assignee Title
EP1970481A1 (en) * 2007-03-14 2008-09-17 Vestel Beyaz Esya Sanayi Ve Ticaret A.S. Overflow detection apparatus
US9687135B2 (en) 2009-12-21 2017-06-27 Whirlpool Corporation Automatic dishwasher with pump assembly
US9211047B2 (en) 2009-12-21 2015-12-15 Whirlpool Corporation Rotating filter for a dishwashing machine
US8667974B2 (en) 2009-12-21 2014-03-11 Whirlpool Corporation Rotating filter for a dishwashing machine
US9375129B2 (en) 2009-12-21 2016-06-28 Whirlpool Corporation Rotating filter for a dishwashing machine
US10779703B2 (en) 2009-12-21 2020-09-22 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US8746261B2 (en) 2009-12-21 2014-06-10 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US9918609B2 (en) 2009-12-21 2018-03-20 Whirlpool Corporation Rotating drum filter for a dishwashing machine
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ITTO20100710A1 (en) * 2010-08-25 2012-02-26 Bitron Spa SAFETY SYSTEM ANTI-GLAZING FOR WASHING APPLIANCES
US9113766B2 (en) 2010-11-16 2015-08-25 Whirlpool Corporation Method and apparatus for dishwasher with common heating element for multiple treating chambers
US9668636B2 (en) 2010-11-16 2017-06-06 Whirlpool Corporation Method and apparatus for dishwasher with common heating element for multiple treating chambers
US9119515B2 (en) 2010-12-03 2015-09-01 Whirlpool Corporation Dishwasher with unitary wash module
US9572473B2 (en) 2010-12-03 2017-02-21 Whirlpool Corporation Dishwasher with unitary wash module
US9532697B2 (en) 2010-12-03 2017-01-03 Whirlpool Corporation Dishwasher with unitary wash module
US9532696B2 (en) 2010-12-03 2017-01-03 Whirlpool Corporation Dishwasher with unitary wash module
US9034112B2 (en) 2010-12-03 2015-05-19 Whirlpool Corporation Dishwasher with shared heater
US9364131B2 (en) 2010-12-13 2016-06-14 Whirlpool Corporation Rotating filter for a dishwashing machine
US8627832B2 (en) 2010-12-13 2014-01-14 Whirlpool Corporation Rotating filter for a dishwashing machine
US9538898B2 (en) 2011-05-16 2017-01-10 Whirlpool Corporation Dishwasher with filter assembly
US9167950B2 (en) 2011-05-16 2015-10-27 Whirlpool Corporation Dishwasher with filter assembly
US11882977B2 (en) 2011-05-16 2024-01-30 Whirlpool Corporation Dishwasher with filter assembly
US8733376B2 (en) 2011-05-16 2014-05-27 Whirlpool Corporation Dishwasher with filter assembly
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