EP1329546A1 - Überflutungssicherungsvorrichtung für Geschirrspülmaschine oder Waschmaschine - Google Patents
Überflutungssicherungsvorrichtung für Geschirrspülmaschine oder Waschmaschine Download PDFInfo
- Publication number
- EP1329546A1 EP1329546A1 EP02425184A EP02425184A EP1329546A1 EP 1329546 A1 EP1329546 A1 EP 1329546A1 EP 02425184 A EP02425184 A EP 02425184A EP 02425184 A EP02425184 A EP 02425184A EP 1329546 A1 EP1329546 A1 EP 1329546A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tray
- float
- regions
- machine
- flood
- 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
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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
- A47L15/4212—Detection of water leaks; Collection of leaked water, e.g. in the casing
-
- 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
Definitions
- the present invention relates to washing machines or dishwashers provided with a flood-preventing device, and in particular a device of the type using a float as sensor element.
- washing machines and dishwashers for domestic use are generally provided with a flood-preventing device having the function of stopping the entrance of water from the network in case of leak of some component of the machine, said device being substantially of either one of two types.
- a pressure switch detects the pressure inside an air trap located in the sump on the tank bottom
- a float detects the presence of water in a tray located at the bottom of the machine, in which a possible leak is collected, and it rises thus activating a microswitch.
- the activation of the device causes the closing of the water inlet valve and usually also the activation of the drain pump, so as to prevent the risk of flooding.
- Known float devices however have two drawbacks; a first drawback stems from the fact that such a device is not quick in detecting the leak because it requires that a certain amount of water is collected in the tray which is sufficient to raise the float until it touches the microswitch, and the tray has an area substantially equal to the area of the machine in order to prevent the outflow of water from the machine.
- a second drawback is that such a device does not provide any indication about the type of failure which occurred in the machine, i.e. the repair technician has no possibility of understanding from where the water in the tray has come.
- a further drawback which is not strictly related to the operation of the device, is the difficulty in checking the correct operation thereof since the manufacturing and testing phases.
- the location of the float at the bottom of the machine makes its manual activation quite difficult once that the tray has been placed in position.
- the risk that the float is damaged or moved while mounting the tray, so that it is made inoperative after a possible previous check.
- the object of the present invention is to provide a flood-preventing device for a washing machine or dishwasher suitable to overcome the above-mentioned drawbacks.
- a first advantage of the device according to the present invention is that of a shorter intervention time since the tray, while still covering the whole area of the machine, is divided into two regions, preferably a larger one and a smaller one, and therefore the level for the activation of the microswitch is reached faster especially in case of filling of the smaller region.
- a second important advantage of this partition of the tray is the possibility for the repair technician to understand where the failure may be, depending on which portion of the tray has received the water.
- Still another advantage of the present device is that of allowing a simple and safe way for a systematic check of the working thereof by means of a hole formed in the tray at the central portion of the float, said hole having obviously a rim higher than the tray rim. This results in a dramatic increase in the reliability of said device without requiring substantial modifications to achieve said further function, whereby the manufacturing costs and procedures remain substantially unchanged.
- the device includes a tray R, to be arranged at the bottom of a dishwasher for example, in which there is internally formed a dividing wall W shaped so as to divide the tray into a smaller region A and a larger region B.
- Region A is substantially ⁇ -shaped with an elongated "foot" on the right and in the center of the circular portion has a hole H with a raised rim higher than the tray rim, as previously mentioned.
- Region B obviously has a shape complementary to region A, and has a pair of cylinders P symmetrically arranged with respect to said hole H.
- these cylinders there are screwed screws S which secure a lid G on which there is mounted a microswitch M protected by a suitable cover N.
- a float F of substantially rectangular shape is shaped so as to be arranged astride wall W, whereby a central portion (FA) of the float extends on the circular portion of region A and the lateral portions (FB) on the adjacent portions of region B.
- the float has through holes to slip it on cylinders P so that it is retained by lid G, a bottom groove to receive the dividing wall W, as well as a central recess for hole H.
- the central portion FA of the float is raised and reaches close to microswitch M, lid G following the shape of the float.
- Tray R is capable of collecting in region B a possible water leak from any hydraulic component of the machine, such as the washing pump, a duct, etc. whereas if the water overflows from the tank due to failure of the level pressure switch or for other causes (e.g. failure of a valve), the water will be conveyed to region A by a duct.
- hole H formed in tray R preferably at the center of the float, allows to check the working of the flood-preventing device by simply mechanically pushing upwards the float with any actuator or even a simple air jet. This type of check can easily be made automatic and carried out directly on the production line in a systematic manner, that is on 100% of the machines.
- the above-described and illustrated embodiment of the device according to the invention is just an example susceptible of various modifications.
- the shape of the dividing wall W may be somewhat changed, same as the blocking and guiding means for the float and the shape thereof, as long as the float is suitable to be arranged so that it is raised by the water flowing in any of the two regions of the tray.
- tray R into more than two regions by means of more dividing walls, as long as the inflow of water in any of these regions causes the activation of the device.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Washing And Drying Of Tableware (AREA)
- Cleaning By Liquid Or Steam (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT02425184T ATE247733T1 (de) | 2002-03-22 | 2002-03-22 | Überflutungssicherungsvorrichtung für geschirrspülmaschine oder waschmaschine |
EP02425184A EP1329546B1 (de) | 2002-03-22 | 2002-03-22 | Überflutungssicherungsvorrichtung für Geschirrspülmaschine oder Waschmaschine |
ES02425184T ES2204883T3 (es) | 2002-03-22 | 2002-03-22 | Dispositivo para impedir inundacion en lavaplatos o maquinas lavadoras. |
DE60200018T DE60200018T2 (de) | 2002-03-22 | 2002-03-22 | Überflutungssicherungsvorrichtung für Geschirrspülmaschine oder Waschmaschine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02425184A EP1329546B1 (de) | 2002-03-22 | 2002-03-22 | Überflutungssicherungsvorrichtung für Geschirrspülmaschine oder Waschmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1329546A1 true EP1329546A1 (de) | 2003-07-23 |
EP1329546B1 EP1329546B1 (de) | 2003-08-20 |
Family
ID=8185850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02425184A Expired - Lifetime EP1329546B1 (de) | 2002-03-22 | 2002-03-22 | Überflutungssicherungsvorrichtung für Geschirrspülmaschine oder Waschmaschine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1329546B1 (de) |
AT (1) | ATE247733T1 (de) |
DE (1) | DE60200018T2 (de) |
ES (1) | ES2204883T3 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005113881A1 (en) * | 2004-04-23 | 2005-12-01 | Lg Electronics Inc. | Float switch of washing machine |
EP1836943A2 (de) * | 2006-03-21 | 2007-09-26 | BITRON S.p.A. | Sicherheitssystem gegen Flutung für eine Geschirrspülmaschine |
WO2009065696A1 (de) * | 2007-11-23 | 2009-05-28 | BSH Bosch und Siemens Hausgeräte GmbH | Wasserführendes haushaltsgerät mit einer sicherheitseinrichtung |
US20110131735A1 (en) * | 2009-12-07 | 2011-06-09 | Lg Electronics Inc. | Washing machine and washing method |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005038016B4 (de) * | 2005-08-09 | 2009-01-29 | Miele & Cie. Kg | Sicherheitseinrichtung für wasserführende Haushaltgeräte |
DE102006047952A1 (de) * | 2006-10-10 | 2008-04-17 | BSH Bosch und Siemens Hausgeräte GmbH | Hausgerät mit einer Sammelvorrichtung für Leckwasser |
DE102012200406A1 (de) * | 2012-01-12 | 2013-07-18 | BSH Bosch und Siemens Hausgeräte GmbH | Sicherheitssystem und wasserführendes Haushaltsgerät |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2401888A1 (de) * | 1974-01-16 | 1975-07-17 | Licentia Gmbh | Ueberwachungsvorrichtung fuer das fluessigkeitsdurchlaufsystem in wasch- oder geschirrspuelmaschinen |
-
2002
- 2002-03-22 AT AT02425184T patent/ATE247733T1/de not_active IP Right Cessation
- 2002-03-22 ES ES02425184T patent/ES2204883T3/es not_active Expired - Lifetime
- 2002-03-22 DE DE60200018T patent/DE60200018T2/de not_active Expired - Fee Related
- 2002-03-22 EP EP02425184A patent/EP1329546B1/de not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2401888A1 (de) * | 1974-01-16 | 1975-07-17 | Licentia Gmbh | Ueberwachungsvorrichtung fuer das fluessigkeitsdurchlaufsystem in wasch- oder geschirrspuelmaschinen |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005113881A1 (en) * | 2004-04-23 | 2005-12-01 | Lg Electronics Inc. | Float switch of washing machine |
KR101082566B1 (ko) | 2004-04-23 | 2011-11-10 | 엘지전자 주식회사 | 세탁기의 플로트 스위치 |
EP1836943A2 (de) * | 2006-03-21 | 2007-09-26 | BITRON S.p.A. | Sicherheitssystem gegen Flutung für eine Geschirrspülmaschine |
EP1836943A3 (de) * | 2006-03-21 | 2008-07-02 | BITRON S.p.A. | Sicherheitssystem gegen Flutung für eine Geschirrspülmaschine |
WO2009065696A1 (de) * | 2007-11-23 | 2009-05-28 | BSH Bosch und Siemens Hausgeräte GmbH | Wasserführendes haushaltsgerät mit einer sicherheitseinrichtung |
DE102007056425A1 (de) | 2007-11-23 | 2009-05-28 | BSH Bosch und Siemens Hausgeräte GmbH | Wasserführendes Haushaltsgerät mit einer Sicherheitseinrichtung |
DE102007056425B4 (de) * | 2007-11-23 | 2016-03-10 | BSH Hausgeräte GmbH | Wasserführendes Haushaltsgerät mit einer Sicherheitseinrichtung |
US20110131735A1 (en) * | 2009-12-07 | 2011-06-09 | Lg Electronics Inc. | Washing machine and washing method |
US9284674B2 (en) * | 2009-12-07 | 2016-03-15 | Lg Electronics Inc. | Washing machine and washing method |
Also Published As
Publication number | Publication date |
---|---|
DE60200018D1 (de) | 2003-10-02 |
ES2204883T3 (es) | 2004-05-01 |
DE60200018T2 (de) | 2004-06-17 |
EP1329546B1 (de) | 2003-08-20 |
ATE247733T1 (de) | 2003-09-15 |
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