EP2586354B1 - Water supply device for a dishwasher - Google Patents

Water supply device for a dishwasher Download PDF

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Publication number
EP2586354B1
EP2586354B1 EP12190086.4A EP12190086A EP2586354B1 EP 2586354 B1 EP2586354 B1 EP 2586354B1 EP 12190086 A EP12190086 A EP 12190086A EP 2586354 B1 EP2586354 B1 EP 2586354B1
Authority
EP
European Patent Office
Prior art keywords
internal cavity
water
water supply
tapering
vapour
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.)
Not-in-force
Application number
EP12190086.4A
Other languages
German (de)
French (fr)
Other versions
EP2586354A1 (en
Inventor
Enzo Brignone
Giovanni Giordano
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.)
Bitron SpA
Original Assignee
Bitron SpA
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 Bitron SpA filed Critical Bitron SpA
Priority to PL12190086T priority Critical patent/PL2586354T3/en
Publication of EP2586354A1 publication Critical patent/EP2586354A1/en
Application granted granted Critical
Publication of EP2586354B1 publication Critical patent/EP2586354B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/4214Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4217Fittings for water supply, e.g. valves or plumbing means to connect to cold or warm water lines, aquastops

Definitions

  • the present invention relates to a water supply device for domestic washing appliances, such as dishwashers and laundry washing machines.
  • a device of this kind typically comprises a flat and hollow plastic body which is connected to other components of the electric household appliance and shaped so as to be able to perform various functions, such as venting of the vapours which form inside the wash-tub, providing an air-break for the supply water, collection of water intended to form the brine for regeneration of the ion exchange resins of the limescale remover, and so on.
  • this body has hitherto been designed as two or more parts which are injection-moulded separately and then welded together so as to define internally a cavity.
  • the corresponding welds may, however, be defective so that strict quality control is necessary, making the production process complex and costly.
  • GB-2 151 466A discloses a water supply device having the features listed in the preamble of claim 1 below.
  • the object of the present invention is therefore to overcome the abovementioned drawbacks of the prior art.
  • the device according to the invention does not have any welds, so that the associated production process may dispense with a corresponding quality control step, while still being able to achieve a high-quality product.
  • the monolithic body of the supply device includes an air-break device for the supply water, which in turn comprises a first half-duct tapering at one end and a second half-duct tapering at one end, the aforementioned tapering ends facing each other.
  • first and second half-ducts are described as having "tapering ends facing each other" means that the aforementioned ends are substantially aligned, namely are arranged on a same straight line.
  • This allows in particular the provision of the two half-ducts with the respective ends formed as one piece with the monolithic body, since at the end of the moulding procedure the mould cores may be extracted from the half-ducts. On the other hand, such extraction would not have been possible in practical terms if the two half-ducts were arranged with their respective ends along a curved line.
  • the device may be completed where necessary by means of inserts assembled inside the body. Rubber parts, in particular gaskets, may also be co-moulded on the body.
  • the present invention relates furthermore to a domestic washing appliance comprising a supply device of the type indicated above.
  • a water supply device for a domestic washing appliance comprises ( Figures 1-6 ) a plastic monolithic body 10 obtained by means of injection-moulding and without welds.
  • the body has two parallel main faces 12 facing each other and connected by a perimetral transverse wall 14 so as to define an internal cavity 16.
  • the body 10 has a substantially flat shape and has, in plan view, a cross-section shaped as an irregular quadrilateral having a top rectilinear side which is substantially orthogonal to substantially rectilinear right and left sides which have different lengths, and a bottom side formed by several differently inclined sections.
  • a circular hole 18 passes through one of the two main faces 12, while a vapour escape chamber 20 is formed within the internal cavity 16 and communicates both with the outside and with the through-hole 18.
  • Alternately arranged ribs 21 which define winding paths suitable for stopping any water spray protrude into the chamber 20 from the inner walls of the main faces 12.
  • the main faces 12 are also passed through by a further through-hole 23 which is intended to communicate with the outside and defines the maximum level which may be reached by the water inside the wash-tub of the domestic appliance.
  • the body 10 also incorporates an air-break device formed by a first half-duct 22 located in the internal cavity 16 and tapering at one end 24 and by a second half-duct 26 located in the internal cavity 16 and tapering at one end 28, the tapering ends 24, 28 of the two half-ducts 22, 26 facing each other and being separated by a gap and having - as shown in the figures - a tubular structure, namely a closed cross-section.
  • the two half-ducts 22, 26 with the respective tubular ends are substantially aligned, namely are arranged on a same straight line.
  • a seat 30 for a supply-water flow meter 32 is also formed in the body 10, upstream of the air-break device.
  • a portion of the transverse wall which forms the top side of the body is formed as a flap 34 hinged along one side on a main face 12.
  • a water supply pipe 36 which partially closes off communication with the outside of the vapour escape chamber 20 and/or promotes vapour condensation, is located within the chamber 20.
  • the pipe 36 is fixed to the body 10 by teeth 37 and supplies water to the air-break device which has the function of preventing any undesirable backflow into the water network.
  • Figure 7 shows in schematic form a mould for the production of the body 10, comprising a pair of parts 38 movable in opposite senses along the same direction for formation of the two half-ducts 22, 26, an auxiliary part 40 movable orthogonally with respect to the latter direction for forming the gap between the facing ends 24, 28 of the two half-ducts 22, 26, and a main movable part 42.
  • Figure 8 shows a further embodiment of the device according to the invention in which numbers identical to those used in the preceding Figures 1-6 identify identical or equivalent parts.
  • the flap 34 is formed by two independent sections 44, 46: the first section 44 acts selectively as an external closure for the vapour escape chamber 20, while the second section 46 acts selectively as a closure for a further chamber 48 formed within the body 10.
  • Figure 9 shows a further embodiment of the device according to the invention in which numbers identical to those used in the preceding Figures 1-6 identify identical or equivalent parts.
  • the body 10 has a small tank 50 for collecting water for forming a regenerating brine, which small tank 50 is formed within the internal cavity 16.
  • Figures 10 and 11 show a further embodiment of the device according to the invention in which numbers identical to those used in the preceding figures identify identical or equivalent parts.
  • the air-break device is not formed integrally with the body 10, but is formed by an insert 52 assembled inside the body after moulding thereof, so as to form a length of a water supply duct.

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Massaging Devices (AREA)
  • Sanitary Device For Flush Toilet (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Description

  • The present invention relates to a water supply device for domestic washing appliances, such as dishwashers and laundry washing machines.
  • A device of this kind typically comprises a flat and hollow plastic body which is connected to other components of the electric household appliance and shaped so as to be able to perform various functions, such as venting of the vapours which form inside the wash-tub, providing an air-break for the supply water, collection of water intended to form the brine for regeneration of the ion exchange resins of the limescale remover, and so on.
  • Attempts at manufacturing this body by means of blow-moulding have not been successful since with this technology it is not possible to obtain, in a piece with such a complex shape, the small dimensional tolerances which are indispensable for operation thereof.
  • In practice, therefore, this body has hitherto been designed as two or more parts which are injection-moulded separately and then welded together so as to define internally a cavity. The corresponding welds may, however, be defective so that strict quality control is necessary, making the production process complex and costly.
  • GB-2 151 466A discloses a water supply device having the features listed in the preamble of claim 1 below.
  • The object of the present invention is therefore to overcome the abovementioned drawbacks of the prior art.
  • According to the invention, this object is achieved by means of a water supply device having the features indicated in Claim 1 below. Preferred features of this device are indicated in the dependent claims.
  • The device according to the invention does not have any welds, so that the associated production process may dispense with a corresponding quality control step, while still being able to achieve a high-quality product.
  • In particular, the monolithic body of the supply device according to the invention includes an air-break device for the supply water, which in turn comprises a first half-duct tapering at one end and a second half-duct tapering at one end, the aforementioned tapering ends facing each other.
  • It should be noted that the expression whereby the first and second half-ducts are described as having "tapering ends facing each other" means that the aforementioned ends are substantially aligned, namely are arranged on a same straight line. This allows in particular the provision of the two half-ducts with the respective ends formed as one piece with the monolithic body, since at the end of the moulding procedure the mould cores may be extracted from the half-ducts. On the other hand, such extraction would not have been possible in practical terms if the two half-ducts were arranged with their respective ends along a curved line.
  • Furthermore, the device may be completed where necessary by means of inserts assembled inside the body. Rubber parts, in particular gaskets, may also be co-moulded on the body.
  • The present invention relates furthermore to a domestic washing appliance comprising a supply device of the type indicated above.
  • Further advantages and features of the present invention will become clear from the detailed description which follows, provided purely by way of a non-limiting example with reference to the accompanying drawings in which:
    • Figure 1 is a perspective view of a device according to the invention;
    • Figure 2 is a perspective view of the device according to Figure 1 from another angle;
    • Figure 3 is a cross-sectional view along the line III-III of Figure 2;
    • Figure 4 is a transparent view of the device according to Figure 1 inside which a water supply pipe has been inserted;
    • Figure 5 shows the incorporation of a flow meter in the device according to the preceding figures;
    • Figure 6 is a cross-sectional view along the line VI-VI of Figure 1;
    • Figure 7 shows schematically the structure of a mould for production of the device according to the preceding figures;
    • Figure 8 is a view which shows a first constructional variant of a detail of the device according to the preceding figures;
    • Figure 9 is a view, corresponding to that of Figure 3, of a second constructional variant of the device according to the invention;
    • Figure 10 is a view, corresponding to that of Figure 1, of a further constructional variant of the device according to the invention; and
    • Figure 11 is a cross-sectional view along the line X-X of Figure 10.
  • A water supply device for a domestic washing appliance comprises (Figures 1-6) a plastic monolithic body 10 obtained by means of injection-moulding and without welds. The body has two parallel main faces 12 facing each other and connected by a perimetral transverse wall 14 so as to define an internal cavity 16. The body 10 has a substantially flat shape and has, in plan view, a cross-section shaped as an irregular quadrilateral having a top rectilinear side which is substantially orthogonal to substantially rectilinear right and left sides which have different lengths, and a bottom side formed by several differently inclined sections.
  • A circular hole 18 passes through one of the two main faces 12, while a vapour escape chamber 20 is formed within the internal cavity 16 and communicates both with the outside and with the through-hole 18. Alternately arranged ribs 21 which define winding paths suitable for stopping any water spray protrude into the chamber 20 from the inner walls of the main faces 12. The main faces 12 are also passed through by a further through-hole 23 which is intended to communicate with the outside and defines the maximum level which may be reached by the water inside the wash-tub of the domestic appliance.
  • The body 10 also incorporates an air-break device formed by a first half-duct 22 located in the internal cavity 16 and tapering at one end 24 and by a second half-duct 26 located in the internal cavity 16 and tapering at one end 28, the tapering ends 24, 28 of the two half- ducts 22, 26 facing each other and being separated by a gap and having - as shown in the figures - a tubular structure, namely a closed cross-section. In particular, the two half- ducts 22, 26 with the respective tubular ends are substantially aligned, namely are arranged on a same straight line. A seat 30 for a supply-water flow meter 32 is also formed in the body 10, upstream of the air-break device.
  • A portion of the transverse wall which forms the top side of the body is formed as a flap 34 hinged along one side on a main face 12.
  • A water supply pipe 36, which partially closes off communication with the outside of the vapour escape chamber 20 and/or promotes vapour condensation, is located within the chamber 20. The pipe 36 is fixed to the body 10 by teeth 37 and supplies water to the air-break device which has the function of preventing any undesirable backflow into the water network.
  • Figure 7 shows in schematic form a mould for the production of the body 10, comprising a pair of parts 38 movable in opposite senses along the same direction for formation of the two half- ducts 22, 26, an auxiliary part 40 movable orthogonally with respect to the latter direction for forming the gap between the facing ends 24, 28 of the two half- ducts 22, 26, and a main movable part 42.
  • Figure 8 shows a further embodiment of the device according to the invention in which numbers identical to those used in the preceding Figures 1-6 identify identical or equivalent parts.
  • The only substantial difference from the preceding embodiment is that the flap 34 is formed by two independent sections 44, 46: the first section 44 acts selectively as an external closure for the vapour escape chamber 20, while the second section 46 acts selectively as a closure for a further chamber 48 formed within the body 10.
  • Figure 9 shows a further embodiment of the device according to the invention in which numbers identical to those used in the preceding Figures 1-6 identify identical or equivalent parts.
  • The only substantial difference from the preceding embodiment according to Figures 1-6 is that the body 10 has a small tank 50 for collecting water for forming a regenerating brine, which small tank 50 is formed within the internal cavity 16.
  • Figures 10 and 11 show a further embodiment of the device according to the invention in which numbers identical to those used in the preceding figures identify identical or equivalent parts.
  • The only substantial difference from the embodiment of Figures 1-6 is that the air-break device is not formed integrally with the body 10, but is formed by an insert 52 assembled inside the body after moulding thereof, so as to form a length of a water supply duct.
  • Of course, without modifying the principle of the invention, the constructional details and embodiments may be greatly varied with respect to that described purely by way of example, without thereby departing from the scope of the invention as defined in the accompanying claims.

Claims (9)

  1. Water supply device for a domestic washing appliance, comprising a monolithic body (10) of plastic material obtained by means of injection-molding and without any welds, said body (10) having two main faces (12) facing each other and connected by a perimetral transverse wall (14) so that it defines an internal cavity (16) and has a substantially flat shape, said body (10) having at least:
    - a through-hole (18) passing through one of the two main faces (12), and
    - a vapour escape chamber (20) formed within said internal cavity (16) and communicating with the outside and with said through-hole (18), said monolithic body (10) further including an air-break device for the supply water,
    said water supply device being characterized in that said air-break device includes:
    - a first half-duct (22) located in said internal cavity (16) and tapering at one end (24); and
    - a second half-duct (26) located in said internal cavity (16) and tapering at one end (28), said tapering ends (24, 28) facing each other.
  2. Device according to Claim 1, wherein the facing tapering ends of the first and second half-ducts (28, 30) are arranged along a same straight line.
  3. Device according to any one of the preceding claims, wherein said body (10) has, within said internal cavity (16) and upstream of the air-break device, a seat (30) for a supply-water flow meter (32).
  4. Device according to any one of the preceding claims, wherein a water supply pipe (36), which pipe (36) preferably partially closes off communication with the outside of said vapour escape chamber (20) and/or promotes vapour condensation, is located within said vapour escape chamber (20).
  5. Device according to any one of the preceding claims, wherein said body (10) has a small tank (50) for collecting water for forming a regenerating brine, which small tank (50) is formed within said internal cavity (16).
  6. Device according to any one of the preceding claims, wherein a portion of said transverse wall (14) constituting the top side of the body (10) is formed as a flap (34) hinged along one side on one of the main faces (12).
  7. Device according to Claim 6, wherein said flap (34) is formed by two independent sections (44, 46), the first section (44) acting selectively as an external closure for said vapour escape chamber (20) and the second section (46) acting selectively as a closure for a further chamber (48) formed within said body (10).
  8. Device according to any one of the preceding claims, wherein said body (10) has, in plan view, a cross-section shaped as an irregular quadrilateral having a top rectilinear side which is substantially orthogonal to substantially rectilinear right and left sides which have different lengths, and a bottom side formed by several differently inclined sections.
  9. Domestic washing appliance comprising a supply device according to any one of the preceding claims.
EP12190086.4A 2011-10-28 2012-10-26 Water supply device for a dishwasher Not-in-force EP2586354B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12190086T PL2586354T3 (en) 2011-10-28 2012-10-26 Water supply device for a dishwasher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000983A ITTO20110983A1 (en) 2011-10-28 2011-10-28 MONOLITHIC WATER DISTRIBUTOR DEVICE

Publications (2)

Publication Number Publication Date
EP2586354A1 EP2586354A1 (en) 2013-05-01
EP2586354B1 true EP2586354B1 (en) 2018-10-24

Family

ID=45507803

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12190086.4A Not-in-force EP2586354B1 (en) 2011-10-28 2012-10-26 Water supply device for a dishwasher

Country Status (5)

Country Link
EP (1) EP2586354B1 (en)
CN (1) CN103082974B (en)
IT (1) ITTO20110983A1 (en)
PL (1) PL2586354T3 (en)
TR (1) TR201900617T4 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107995853A (en) * 2015-06-19 2018-05-04 比特龙有限公司 Integrated component for dish-washing machine
CN108064143B (en) * 2015-06-19 2021-07-30 比特龙有限公司 Integrated component for a dishwasher
KR102559038B1 (en) * 2015-06-19 2023-07-24 비트론 에스.피.에이. Integrated components for dishwashers
ITUB20169959A1 (en) * 2016-01-13 2017-07-13 T&P S P A DISTRIBUTOR DEVICE OF LIQUID IN A HOUSEHOLD WASHING MACHINE, IN PARTICULAR A DISHWASHER AND ITS WASHING MACHINE
ITUB20169967A1 (en) * 2016-01-13 2017-07-13 T&P S P A DISTRIBUTOR DEVICE OF LIQUID IN A HOUSEHOLD WASHING MACHINE, IN PARTICULAR A DISHWASHER AND ITS WASHING MACHINE
IT201900004055A1 (en) 2019-03-20 2019-06-20 Bitron Spa Non-detachable connection system to connect a hose to a hydraulic device
IT202100016658A1 (en) * 2021-06-24 2022-12-24 Tp Reflex Group Spa LIQUID DISPENSER DEVICE FOR A DOMESTIC WASHING MACHINE, IN PARTICULAR A DISHWASHER, AND RELATIVE WASHING MACHINE

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
CH549991A (en) * 1972-02-19 1974-06-14 Bauknecht Gmbh G DISHWASHER WITH A VENTILATOR LOCATED IN THE WASHBASIN WALL.
IT7934036V0 (en) * 1979-11-15 1979-11-15 Zanussi A Spa Industrie ADJUSTABLE VOLUME DOSER TANK FOR DISHWASHER.
DE3345603C2 (en) * 1983-12-16 1993-12-16 Bauknecht Hausgeraete Device for reducing the steam escaping from a household dishwasher
ITUD20030070A1 (en) * 2003-03-27 2004-09-28 Dihr Spa DISCONTINUITY TANK FOR A WASHING EQUIPMENT, SUCH AS A DISHWASHER, A GLASSWASHER, A DISHWASHER, A WASHING MACHINE, OR SIMILAR.
KR101128811B1 (en) * 2009-06-29 2012-03-23 엘지전자 주식회사 Washing machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2586354A1 (en) 2013-05-01
ITTO20110983A1 (en) 2013-04-29
TR201900617T4 (en) 2019-02-21
CN103082974A (en) 2013-05-08
CN103082974B (en) 2017-04-12
PL2586354T3 (en) 2019-04-30

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