EP3124673B1 - Lave-linge équipé d'un dispositif de sécurité antirefoulement - Google Patents

Lave-linge équipé d'un dispositif de sécurité antirefoulement Download PDF

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Publication number
EP3124673B1
EP3124673B1 EP15179243.9A EP15179243A EP3124673B1 EP 3124673 B1 EP3124673 B1 EP 3124673B1 EP 15179243 A EP15179243 A EP 15179243A EP 3124673 B1 EP3124673 B1 EP 3124673B1
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EP
European Patent Office
Prior art keywords
inlet
conduit portion
water
axis
cabinet
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.)
Active
Application number
EP15179243.9A
Other languages
German (de)
English (en)
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EP3124673A1 (fr
Inventor
Marco Maiero
Lucio Valent
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.)
Electrolux Appliances AB
Original Assignee
Electrolux Appliances AB
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 Electrolux Appliances AB filed Critical Electrolux Appliances AB
Priority to EP15179243.9A priority Critical patent/EP3124673B1/fr
Publication of EP3124673A1 publication Critical patent/EP3124673A1/fr
Application granted granted Critical
Publication of EP3124673B1 publication Critical patent/EP3124673B1/fr
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Classifications

    • 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
    • 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
    • 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
    • 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
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4217—Fittings for water supply, e.g. valves or plumbing means to connect to cold or warm water lines, aquastops
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/47—Responding to irregular working conditions, e.g. malfunctioning of pumps 

Definitions

  • the present invention concerns the field of laundry washing techniques.
  • the present invention refers to a laundry washing machine equipped with an anti-flooding safety device designed for connection to the water main.
  • laundry washing machines both "simple” laundry washing machines (i.e. laundry washing machines which can only wash and rinse laundry) and laundry washing-drying machines (i.e. laundry washing machines which can also dry laundry), is widespread.
  • laundry washing machine will refer to both simple laundry washing machines and laundry washing-drying machines.
  • Laundry washing machines generally comprise an external casing, or cabinet, provided with a washing tub which contains a rotatable perforated drum.
  • a loading/unloading door ensures access to the drum where the laundry is placed in order to be washed with water and proper treating agents (i.e. detergent, softener, rinse conditioner, etc.).
  • Laundry washing machines typically comprise, inside the cabinet, a products supply unit, or dispenser, for the introduction of the treating agents into the tub.
  • a products supply unit or dispenser
  • the water for washing the laundry is conveyed into the tub by making it flow through the dispenser.
  • the water is conveyed directly into the tub bypassing the dispenser.
  • water from the water main is conveyed inside the cabinet of the laundry washing machine through a flexible hose.
  • Safety devices of the known type comprise an inner flexible hose which extends longitudinally within an outer flexible hose so that to define a gap therebetween. Proximal ends of the hoses are connectable to the water main and distal ends of the hoses are connectable/connected to the laundry washing machine.
  • the outer hose withholds inside it and in the gap any possible leaking water from the inner hose.
  • the outer hose has therefore the function of preventing any possible leakage of water flowing/contained in the inner hose from being dispersed in the domestic environment, causing flooding.
  • the proximal ends of said hoses are advantageously provided with a safety valve that closes the flow of water in case the leakage of water is detected.
  • a supply valve is typically associated with the cabinet of the laundry washing machine for controlling the adduction of water coming from the water main and the safety device.
  • the distal end of the internal hose is mechanically connected to a supply valve fixedly associated to the laundry washing machine.
  • the distal end of the outer hose is connected to the cabinet of the laundry washing machine at an aperture to put in communication the gap of the safety device to the inside of the cabinet.
  • a tray inside the cabinet is provided for collecting any possible leakage of water arriving from the gap.
  • the tray is preferably provided with a sensor device suitable to detect the presence, or the level, of the collected water, that generates a control signal (electrical, pneumatic, or mechanical, according to the cases) which causes switching off of the safety valve, and hence stopping the flow of water from the water main.
  • the safety device presents the advantage of interrupting the supply of water also in the case where the leakage is not due to a failure of the inner hose, but rather to failures of different hydraulic components mounted inside the cabinet.
  • Document DE 39 31 528 A1 discloses a safety device associated to an household appliance, comprising a safety valve connected to a water tap and to the appliance through an internal and an external hoses; the internal hose connects the valve with the magnetic water valve provided on the machine, whereas the external hose is connected to a safety tray comprising an additional hose suitable to convey the water flowing from the gap between the internal / external hose into the machine bottom tray.
  • Document DE 36 18 258 A1 discloses a safety device in with the water flowing on the gap between the concentric hoses flows directly into the machine cabinet, collecting on the bottom tray of the machine.
  • a first drawback posed by the known safety device is constituted by the complexity of its distal ends for the connection of the hoses to, respectively, the supply valve and the cabinet of the laundry washing machine.
  • Another drawback posed by the known technique is constituted by the fact that the distal ends of the hoses with arrangement for the connection to the supply valve and the cabinet is cumbersome.
  • the object of the present invention is therefore to overcome the drawbacks posed by the known techniques.
  • a laundry washing machine equipped with an anti-flooding safety device comprising a duct having an inner hose for supplying water from an external supply line to the laundry washing machine and an outer hose surrounding the inner hose such that a gap is defined therebetween for withholding inside it possible leaking water and by providing the anti-flooding safety device with a connector for the connection of distal ends of the hoses to the laundry washing machine and wherein the connector comprises a first inlet and a first conduit portion which fluidly connects said inner hose to the laundry washing machine and further comprises a second inlet and a second conduit portion which fluidly connects the gap to the inside of the cabinet, it is possible to reduce the complexity and/or the size of the anti-flooding safety device and of the laundry washing machine compared to known system.
  • the present invention relates, therefore, to a laundry washing machine equipped with an anti-flooding safety device, said laundry washing machine comprising:
  • the first connector further comprises a fastening device for the connection to the wall portion of the cabinet.
  • the first inlet is inserted into the distal end of the inner hose.
  • the second inlet is externally connected to the distal end of the outer hose.
  • the second inlet surrounds the first inlet so as to define a chamber therebetween.
  • the first inlet and/or the second inlet comprises a tubular portion, preferably a cylindrical tubular portion.
  • the first conduit portion and/or the second conduit portion comprises a tubular portion, preferably a cylindrical tubular portion.
  • the first inlet extends along an axis and the first conduit portion extends along an axis, wherein the axis of the first inlet and the axis of the first conduit portion intersect at an angle higher or equal to 90° and lower than 180°, preferably at an angle comprised between 135° and 90°, more preferably at an angle equal to 90°.
  • the second inlet extends along an axis and the second conduit portion extends along an axis, wherein the axis of the second inlet and the axis of the second conduit portion intersect at an angle higher or equal to 90° and lower than 180°, preferably at an angle comprised between 135° and 90°, more preferably at an angle equal to 90°.
  • the axis of the first inlet and the axis of the second inlet are substantially parallel one to the other. According to a further preferred embodiment of the invention, the axis of the first inlet and the axis of the second inlet substantially coincides.
  • the axis of the first conduit portion and the axis of the second conduit portion are substantially parallel one to the other.
  • the first conduit portion of the supplying water conveying line and the second conduit portion of the leaking water conveying line are two separate parts of the first connector.
  • the second conduit portion terminates inside the cabinet by passing through an aperture realized in the wall portion of said cabinet.
  • the supplying water conveying line and the leaking water conveying line define a completed, integral, unitary member.
  • the supplying water conveying line and the leaking water conveying line are obtained in a single piece construction, preferably made with a plastic material, more preferably by moulding.
  • the first conduit portion further comprises a connection device for the connection to the inlet duct.
  • the connection device comprises a ring-nut.
  • a filter is arranged at said connection device.
  • the second conduit portion further comprises a fastening device for the connection to the laundry washing machine.
  • said fastening device are suited for the connection to the wall portion of the cabinet.
  • said fastening device comprises a flange extending from the second conduit portion and at least one hole for receiving at least one fastening screw.
  • the flange extends perpendicularly with respect to the axis of the second conduit portion.
  • the anti-flooding safety device further comprises a cover arrangement removably connected to the first connector, the cover arrangement being suitable to protect at least the first conduit portion of the first connector.
  • the cover arrangement is removably connected to the first connector by means of at least one fastening screw.
  • the cover arrangement further comprises a water collector device which is arranged below the first conduit portion for the adduction of possible leaking water collected around the first conduit portion inside the cabinet.
  • the water collector device comprises a drain portion which terminates inside the cabinet by passing through an aperture realized in the wall portion of the cabinet.
  • the water supply unit comprises at least one valve, said at least one valve being provided with the water supply inlet.
  • the anti-flooding safety device further comprises a second connector for the connection of the proximal ends of the hoses to the external supply line.
  • the second connector comprises a safety valve arrangement which is controllable for stopping the flow of water from the external supply line.
  • the anti-flooding safety device comprises a signal line connected to a control unit for controlling the safety valve arrangement, the signal line passing through the gap of the duct.
  • the present invention concerns an anti-flooding safety device for a laundry washing machine comprising:
  • the first connector further comprises a fastening device for the connection to the wall portion of the cabinet.
  • the present invention has proved to be particularly advantageous when applied to laundry washing machines, as described below. It should in any case be underlined that the present invention is not limited to laundry washing machines. On the contrary, the present invention can be conveniently applied to laundry washing-drying machines (i.e. laundry washing machines which can also dry laundry).
  • laundry washing machine will refer to both simple laundry washing machines and laundry washing-drying machines.
  • the laundry washing machine 1 comprises an external casing or cabinet 2, in which a washing tub (not shown) is externally arranged with respect to a perforated washing drum (not shown) where the laundry to be treated can be loaded.
  • the cabinet 2 is provided with a loading/unloading door, not visible, which allows access to the drum.
  • the external cabinet 2 comprises a vertical front side wall 2a, a vertical rear side wall 2b, two vertical lateral side walls 2c, 2d and an upper side wall 2e.
  • the laundry washing machine preferably comprises a wash products dispenser (not shown) to supply wash products into the tub during a washing cycle.
  • Wash products may comprise, for example, detergent, rinse additives, fabric softener or fabric conditioners, waterproofing agents, fabric enhancers, rinse sanitization additives, chlorine-based additives, etc..
  • a water supply unit 5 (partially visible in figures 5 and 6 ) is preferably arranged in the upper part of the laundry washing machine 1 and fixedly associated to the cabinet 2.
  • the water supply unit 5 is suited to control the adduction of water coming from an external supply line E, hereinafter indicated as water main E.
  • the laundry washing machine 1 advantageously comprises a main control unit, non shown, connected to the various parts of the laundry washing machine 1 in order to ensure its operation.
  • the water supply unit 5 preferably comprises a supply valve 6 which is properly controlled, opened and closed, during the washing cycle.
  • the water supply unit may comprise further supply valves, for example a second valve for controlling adduction of hot water coming from a respective hot water external source.
  • the supply valve 6 comprises an inlet duct 7 which is designed for the hydraulic connection to the safety device 20.
  • the water supply unit 5 is fixedly associated to the cabinet 2.
  • the water supply unit 5 is substantially totally arranged inside the cabinet 2. It is clear that part of the water supply unit 5 may protrude from the cabinet 2.
  • all, or part, of the inlet duct 7 may protrude from the cabinet 2 or all, or part, of the supply valve 6 may protrude from the cabinet 2.
  • the water supply unit 5 is totally arranged inside the cabinet 2 there are no parts of the water supply unit 5 which protrude from the cabinet 2.
  • the safety device 20 as better visible in Figure 2 , comprises a duct 80 having a first end 17, or distal end, and a second opposite end 18, or proximal end.
  • the safety device 20 comprises a first arrangement 21, indicated also with "first connector” alongside the description, which is designed for the connection to the supply valve 6.
  • the safety device 20 comprises a second arrangement 22, indicated also with "second connector” alongside the description, which is designed for the connection to the water main E.
  • the second connector 22 preferably comprises a safety valve arrangement 23 and connection means 24, for example a ring-nut, for the connection to the water main E, such as a tap.
  • the safety valve arrangement 23 preferably comprises a solenoid valve (not visible) which is controlled by a signal running over a signal line 66, or wire, that reaches a control unit inside the cabinet 2 through the duct 80, as better explained below.
  • This control unit is preferably part of the main control unit of the laundry washing machine. In different embodiments, nevertheless, the control unit may be a separate unit from the main control unit. In this case, the control unit may preferably communicate with the main control unit.
  • control unit may be located in correspondence of the safety valve arrangement.
  • the duct 80 comprises an inner hose 25 and an outer hose 26, such as flexible hoses preferably made of thermoplastic material.
  • the outer hose 26 surrounds the inner hose 25 in such a way that between them an annular gap 28 is defined, as better visible in Figures 5 , 6 and 10 .
  • the materials used for producing the hoses 25 and 26 can be of a type known in the sector, for example PP for the outer hose 26 and PVC or PP for the inner hose 25.
  • the water coming from the water main E flows from the second connector 22 of the safety device 20 towards the first connector 21 through and inside the inner hose 25.
  • the outer hose 26 withholds inside it and in the annular gap 28 any possible leaking water from the inner hose 25.
  • the gap 28 is therefore designed to allow the leaking water to pass between the outer hose 26 and the inner hose 25, preferably also in an axial direction with respect to the two hoses, in particular towards the first connector 21.
  • the first connector 21, as said above, is designed for the connection to the supply valve 6.
  • the rear side wall 2b of the cabinet 2, as illustrated in Figures 3 and 4 preferably comprises a first aperture 11 which allows access to the inlet duct 7 of the supply valve 6.
  • the inlet duct 7 preferably protrudes from the rear side wall 2b of the cabinet 2.
  • the inlet duct 7 preferably may comprise an intermediate duct allowing the connection to the first connector 21.
  • the rear side wall 2b of the cabinet 2 further comprises a second aperture 12 which is designed to put in communication the gap 28 of the safety device 20 to the inside of the cabinet 2, as will be described later.
  • a tray (not shown) inside the cabinet 2, preferably at the lower part of the cabinet 2, is provided for collecting any possible leaking water arriving from the gap 28.
  • the tray is then preferably provided with a sensor device suitable to detect the presence, or the level, of the collected water, that generates a control signal (electrical, pneumatic, or mechanical, according to the cases) which preferably causes switching off of the safety valve arrangement 23 and/or of the supply valve 6 and hence stops the flow of water from the water main E.
  • the safety device 20 has the advantage of interrupting the supply of water also in the case where the leakage is not due to a failure of the inner hose 25, but rather to failures of different hydraulic components mounted inside the cabinet 2.
  • the first connector 21 of the safety device 20, according to the present invention comprises a supplying water conveying line 30 and a leaking water conveying line 60.
  • the supplying water conveying line 30 hydraulically and mechanically connects the terminal portion 25a, or distal end 25a, of the inner hose 25 of the duct 80 to the water supply unit 5, preferably to the inlet duct 7 of the supply valve 6.
  • the supplying water conveying line 30, therefore, fluidly connects the inner hose 25 of the duct 80 to the water supply unit 5.
  • the leaking water conveying line 60 is configured to put in fluid communication the gap 28 between hoses 25, 26 with the inside of the cabinet 2.
  • the leaking water conveying line 60 therefore, fluidly connects the gap 28 of the duct 80 to the inside of the cabinet 2.
  • the supplying water conveying line 30, as better illustrated in Figure 10 comprises a first inlet 31 for the connection to the distal end 25a of the inner hose 25 and a first conduit portion 32 for the connection to the inlet duct 7 of the supply valve 6.
  • the first conduit portion 32 is advantageously directly connected to the inlet duct 7.
  • the inlet duct 7 preferably comprises an intermediate duct allowing the connection to the conduit portion 32.
  • the first inlet 31 preferably comprises a tubular portion 33, more preferably cylindrically shaped, which is apt to be inserted into the distal end 25a of the inner hose 25.
  • the first inlet 31 extends along an axis X which substantially coincides with the axis of the distal end 25a of the inner hose 25.
  • the tubular portion 33 preferably has coupling elements 33a on the outside, preferably comprising a corrugation, for coupling with an inlet region of the inner hose 25. It is clear that in different embodiments other equivalent means of fastening may be provided.
  • the first conduit portion 32 for the connection to the inlet duct 7 of the supply valve 6 preferably comprises a tubular portion 34, more preferably cylindrically shaped, which is provided with a connection device 35 for the connection to the inlet duct 7 of the supply valve 6.
  • the inlet duct 7 may preferably comprise an intermediate duct allowing the connection to the conduit portion 32.
  • the first conduit portion 32 extends along an axis Y which substantially coincides with the axis of the inlet duct 7 of the supply valve 6.
  • the axis Y of the first conduit portion 32 is preferably perpendicular to the axis X of the first inlet 31, as it appears in the preferred embodiment illustrated and described herein with reference to Figure 10 .
  • the first inlet 31 and the first conduit portion 32 of the supplying water conveying line 30 are connected through an intermediate conduit portion 36 which preferably has a bent section 37.
  • the intermediate conduit portion 36 and the first inlet 31 are integrated each other.
  • the intermediate conduit portion 36, except the bent section 37, and the first inlet 31 are coaxially integrated each other.
  • the first inlet 31, the first conduit portion 32 and the intermediate conduit portion 36 define a completed, integral, unitary member.
  • This construction positively affects the safety device 20 in term of overall size and/or weight.
  • the perpendicularity between the axis Y of first conduit portion 32 and the axis X of the first inlet 31 allows to keep the distance D between the distal end 25a of the inner hose 25 and the rear side wall 2b of the cabinet 2, as depicted in Figure 5 , as short as possible since the first inlet 31 is substantially parallel and close to the rear side wall 2b of the cabinet 2.
  • the two axis X, Y are kept substantially perpendicular and intersects at a 90° (right) angle, as in the present case illustrated in Figure 10 .
  • the two axis X, Y may intersect at different angles, but preferably lower than 180°.
  • the angle between the two axis X, Y is comprised between 135° and 90°, more preferably is equal to 90° (for the reasons explained above).
  • the angle between the two axis X, Y may be also less than 90°.
  • connection device 35 of the first conduit portion 32 for the connection to the inlet duct 7 preferably comprises a ring-nut 50 with inner threads 50a for the connection to corresponding outer threads 7a of the inlet duct 7 (as better visible in Figure 5 ).
  • connection device 35 further preferably comprises a counter ring-nut 51.
  • a filter 52 is arranged at said connection device 35, more preferably inside the inlet duct 7.
  • a removable filter 52 is used.
  • the leaking water conveying line 60 comprises a second inlet 41 for the connection to the distal end 26a of the outer hose 26 and a second conduit portion 42 which preferably enters the second aperture 12 of the rear side wall 2b of the cabinet 2.
  • the second inlet 41 is externally connected to the distal end 26a of the outer hose 26.
  • the second inlet 41 preferably comprises a tubular portion 43, more preferably cylindrically shaped, which is apt to receive the distal end 26a of the outer hose 26.
  • the second inlet 41 extends along an axis X' which is substantially parallel with the axis Z' of the distal end 26a of the outer hose 26.
  • the axis X' of the second inlet 41 may coincide with the axis Z' of the distal end 26a of the outer hose 26, or even inclined one to the other.
  • the axis X' of the second inlet 41 is also parallel with the axis X of the first inlet 31.
  • the axis X' of the second inlet 41 may coincide with the axis X of the first inlet 31.
  • the tubular portion 43 of the second inlet 41 advantageously surrounds the tubular portion 33 of the first inlet 31.
  • the upper portion 43a of the tubular portion 43 of the second inlet 41 joins the intermediate conduit portion 36 so that a chamber 48 is defined between the first inlet 31 and the second inlet 41.
  • the chamber 48 fluidly communicates with the gap 28 of the duct 80.
  • the tubular portion 43 is preferably coupled with an outlet region of the outer hose 26 by press fit, preferably with interposition of sealing means (for example an O-ring 144). It is clear that in different embodiments other equivalent means of fastening may be provided.
  • the second conduit portion 42 preferably comprises a tubular portion 44, more preferably cylindrically or ovally shaped.
  • the second conduit portion 42 preferably extends from the second inlet 41 and is fluidly connected with the chamber 48.
  • the second conduit portion 42 preferably enters the second aperture 12 of the side wall 2b of the cabinet 2 and terminates inside the same cabinet 2.
  • the second conduit portion 42 and the first conduit portion 32 are two separate parts of the first connector 21; more in detail the second conduit portion 42 is externally disposed with respect to the first conduit portion 32.
  • the second conduit portion 42 extends along an axis Y' which is substantially parallel to the axis Y of the first conduit portion 32.
  • the two axis Y', Y may also be inclined one to the other, preferably by a small angle.
  • the axis Y' of the second conduit portion 42 is preferably perpendicular to the axis X' of the second inlet 41, as it appears in the preferred embodiment illustrated and described herein with reference to Figure 10 .
  • the intermediate conduit portion 36 and the first inlet 31 of the supplying water conveying line 30 and the second inlet 41 of the leaking water conveying line 60 are integrated each other.
  • the second inlet 41 and the second conduit portion 42 define a completed, integral, unitary member.
  • all the elements namely the second inlet 41, the second conduit portion 42, the first inlet 31, the first conduit portion 32 and the intermediate conduit portion 36, define a completed, integral, unitary member.
  • the supplying water conveying line 30 and the leaking water conveying line 60 define a completed, integral, unitary member.
  • This construction positively affects the safety device 20 in term of overall size and/or weight. This also renders the safety device 20 less cumbersome.
  • the perpendicularity between the axis Y' of second conduit portion 42 and the axis X' of the second inlet 41 allows to keep the distance D between the distal end 26a of the outer hose 26 and the rear side wall 2b of the cabinet 2 as short as possible since the second inlet 41 is substantially parallel and close to the rear side wall 2b of the cabinet 2.
  • the two axis X', Y' are kept substantially perpendicular and intersects at a 90° (right) angle, as in the present case illustrated in Figure 10 .
  • the two axis X', Y' may intersect at different angles, but preferably lower than 180°. More preferably, the angle between the two axis X', Y' is comprised between 135° and 90°, more preferably is equal to 90° (for the reasons explained above).
  • the angle between the two axis X', Y' may be also less than 90°.
  • the second conduit portion 42 is further preferably provided with a fastening device 45 for the connection to the rear side wall 2b of the cabinet 2.
  • the fastening device 45 preferably comprises a flange 46 (better visible in Figures 7 and 8 ) extending from the second conduit portion 42 and fastening means 47, preferably holes 47, for receiving fastening screws (not visible in the Figures). Fastening screws advantageously engage respective holes 147 provided at the rear side wall 2b of the cabinet 2 (visible in Figure 3 ).
  • the flange 46 preferably extends perpendicularly with respect to the axis Y' of the second conduit portion 42.
  • fastening device for the second conduit portion 42 could be even omitted.
  • the correct and firm position of the second conduit portion 42 may be obtained by the fixing effect deriving from the connection device 35 of the first conduit portion 32.
  • the part 42a of the second conduit portion 42 protruding from the flange 46 substantially represents the terminating portion which is at least partially inserted into the second aperture 12 of the rear side wall 2b of the cabinet 2 (as visible in Figure 5 ). According to the preferred embodiment here illustrated, leaking water coming from the gap 28 of the duct 80 and flowing through the chamber 48 and the second conduit portion 42 is therefore advantageously discharged inside the cabinet 2.
  • first conduit portion 32 and the second conduit portion 42 of the first connector 21 are two distinct parts and are kept at a substantially precise reciprocal distance, in particular when they are realized as a completed, integral, unitary member.
  • This feature helps the mounting operation of the safety device 20, in particular the correct alignment of the first conduit portion 32 with the inlet duct 7 of the supply valve 6 and the correct alignment of the second conduit portion 42 with the second aperture 12.
  • connection device 35 of the first conduit portion 32 and the inlet duct 7 of the supply valve 6 is also obtained between the fastening device 45 of the second conduit portion 42 and the rear side wall 2b of the cabinet 2.
  • the signal line 66 (wire) is also depicted.
  • the wire 66 connects the main control unit (not illustrated) inside the cabinet 2 to the solenoid valve of the safety valve arrangement 23, as explained above.
  • the wire 66 from the solenoid valve reaches the main control unit inside the cabinet 2 by passing through the gap 28 alongside the duct 80, the chamber 48 and the second conduit portion 42 of the first connector 21.
  • Figures 9 and 10 also show a terminal electrical connector 66a of the signal line 66 (wire) which is advantageously connectable to the main control unit.
  • the wire 66 is a probe, whereas the control unit of the safety valve arrangement is in the same safety valve arrangement.
  • the safety device 20 further comprises a cover arrangement 90 for the first connector 21.
  • the cover arrangement 90 is suitable to protect the first connector 21 from external environment.
  • the cover arrangement 90 also constituted a safety arrangement against accidental tampering.
  • the cover arrangement 90 preferably comprises a cover 81 which is removably connected to the first connector 21.
  • the cover 81 preferably comprises a cup-shaped body which surrounds the first conduit portion 32, the connection device 35 and partially the intermediate portion 36.
  • the cover 81 comprises a slot 82 which allows assembling of the same to the first connector 21 receiving the intermediate portion 36.
  • the cover 81 is preferably arranged above the second conduit portion 42, i.e. it does not enclose the second conduit portion 42.
  • the cover may surround also the second conduit portion 42.
  • the cover 81 is removably connected to the first connector 21 by means of a screw 83 which is inserted in a hole 84 of the cover 81 and engages a threaded hole 85 realized in a seat 86 of the first connector 21.
  • connection may be realized differently, for example by means of Velcro fastening means, snap means, etc.
  • the terminal part of the second conduit portion 42 i.e. the above described part indicated with 42a, preferably comprises an hydraulic adaptor 91.
  • the terminal part 42a of the second conduit portion 42 is advantageously inserted into the second aperture 12 of the rear side wall 2b and enters the same second aperture 12.
  • the terminal part 42a of the second conduit portion 42 may be arranged so as to be displaced at a short distance from the rear side wall 2b or in contact with said rear side wall 2b.
  • the hydraulic adaptor 91 is advantageously used in case the laundry washing machine 1 is further internally provided with a leaking water conveying device 95, as illustrated in Figures 11 and 12 , which is suited to convey the leaking water from the first connector 21 to a proper water collecting housing (for example a tray as said above).
  • the hydraulic adaptor 91 is preferably inserted in the terminal part 42a of the second conduit portion 42 in a releasable manner.
  • the leaking water conveying device 95 preferably comprises a duct 96 and a terminal hose 97.
  • the hydraulic adaptor 91 preferably comprises a first opening 92 which is properly shaped to be connectable to the terminal hose 97 of the leaking water conveying device 95.
  • the hydraulic adaptor 91 preferably comprises a second opening 93 which allows the passage of the wire 66, as illustrated for example in figure 10 .
  • the hydraulic adaptor 91 and/or the leaking water conveying device 95 may be omitted.
  • This safety device 120 differs from the safety device 20 previously described with reference to Figures 1 to 10 in that the cover 181 of the cover arrangement 190 further comprises a water collector device 185.
  • the water collector device 185 is defined by a drain portion 186 of the cover 181.
  • the drain portion 186 is substantially a portion which protrudes from the body of the cover 181.
  • drain portion 186 is arranged below the first conduit portion 32 and the connection device 35.
  • the drain portion 186 is advantageously configured so as to terminate inside the cabinet 2 in a third aperture 13 realized in the rear side wall 2b of the cabinet 2.
  • the third aperture 13 is better visible in Figures 13 and 14 .
  • the water collector device 185 and in particular the drain portion 186, has the function of collecting water leaking from the first conduit portion 32 and/or the connection device 35 and discharging it inside the cabinet 2 (for example leaking water due to the ring-nut 50 not fitting closely).
  • the drain portion 186 is preferably slightly inclined with respect to the horizontal plane so that the leaking water easily falls down by gravity inside the cabinet 2.
  • a tray then preferably also collects said leaking water.
  • the cover 181 In order to install the cover 181 to the first connector 21, the cover 181 comprises a shaped slot 182 having a first portion 182a and a second portion 182b which extends transversely with respect to the first portion 182a, as illustrated in Figure 13A .
  • the cover 181 is first moved towards the first connector 21 with the first portion 182a of the slot 182 receiving the intermediate portion 36 of the first connector 21.
  • the cover 181 is then rotated with the second portion 182a of the slot 182 which receives the intermediate portion 36 of the first connector 21. Rotation is stopped when the drain portion 186 is arranged below the first conduit portion 32 and is also aligned with the third aperture 13 of the rear side wall 2b of the cabinet 2.
  • the cover 181 and the first connector 21 are fixed it their final operative position, as illustrated in Figure 15 .
  • the water collector device may be differently realized.
  • the water collector device may comprise a baffle, preferably slightly inclined with respect to the horizontal plane, protruding from the body of the cover and arranged below the first conduit portion and the connection device and configured so as to terminate inside the cabinet.
  • the present invention allows all the set objects to be achieved.
  • it makes it possible to provide an alternative anti-flooding safety system in a laundry washing machine equipped with said safety system.
  • laundry washing machine illustrated in the enclosed figure is of the front-loading type; however it is clear that the system according to the invention can be applied as well to a top-loading washing machine, substantially without any modification.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Claims (15)

  1. Lave-linge (1) équipé d'un dispositif de sécurité antirefoulement (20 ; 120), ledit lave-linge (1) comprenant :
    une armoire (2) supportant un tambour de lavage conçu pour recevoir le linge et une cuve de lavage disposée extérieurement par rapport audit tambour de lavage ;
    une unité d'alimentation en eau (5) conçue pour fournir de l'eau dans ladite cuve de lavage, ladite unité d'alimentation en eau (5) étant associée de manière fixe à ladite armoire (2) et comprenant au moins une entrée d'alimentation en eau (7) ;
    ledit dispositif de sécurité antirefoulement (20 ; 120) comprenant un conduit (80) ayant au moins un tuyau intérieur (25) pour fournir de l'eau d'une conduite d'alimentation externe (E) à ladite au moins une entrée d'alimentation en eau (7) de ladite unité d'alimentation en eau (5) et au moins un tuyau extérieur (26) entourant ledit tuyau intérieur (25) de sorte qu'un espace (28) soit défini entre lesdits tuyaux (25, 26) pour retenir en son sein d'éventuelles fuites d'eau, ledit tuyau intérieur (25) s'étendant longitudinalement entre une extrémité proximale et une extrémité distale (25a) et ledit tuyau extérieur (26) s'étendant longitudinalement entre une extrémité proximale et une extrémité distale (26a),
    caractérisé en ce que ledit dispositif de sécurité antirefoulement (20 ; 120) comprend un premier raccord (21) pour le raccordement desdites extrémités distales (25a, 26a) desdits tuyaux (25, 26) audit lave-linge (1), ledit premier raccord (21) comprenant :
    une conduite de transport d'eau d'alimentation (30) comprenant une première entrée (31) pour le raccordement à ladite extrémité distale (25a) dudit tuyau intérieur (25) et une première partie de conduit (32) pour le raccordement à ladite au moins une entrée d'eau (7) de ladite unité d'alimentation en eau (5), ladite conduite de transport d'eau d'alimentation (30) reliant de manière fluide ledit tuyau intérieur (25) à ladite unité d'alimentation en eau (5) ;
    une conduite de transport d'eau de fuite (60) comprenant une seconde entrée (41) pour le raccordement à ladite extrémité distale (26a) dudit tuyau extérieur (26) et une seconde partie de conduit (42) pour l'adduction de ladite eau de fuite à l'intérieur de ladite armoire (2), ladite conduite de transport d'eau de fuite (60) reliant de manière fluide ledit espace (28) à l'intérieur de ladite armoire (2).
  2. Lave-linge (1) selon la revendication 1, ladite première entrée (31) étant insérée dans ladite extrémité distale (25a) dudit tuyau intérieur (25).
  3. Lave-linge (1) selon l'une quelconque des revendications précédentes, ladite seconde entrée (41) étant raccordée en externe à ladite extrémité distale (26a) dudit tuyau extérieur (26).
  4. Lave-linge (1) selon l'une quelconque des revendications précédentes, ladite seconde entrée (41) entourant ladite première entrée (31) de sorte à définir une chambre (48) entre elles.
  5. Lave-linge (1) selon l'une quelconque des revendications précédentes, ladite première entrée (31) et/ou ladite seconde entrée (41) comprenant une partie tubulaire (33, 43), de préférence une partie tubulaire (33, 43) cylindrique.
  6. Lave-linge (1) selon l'une quelconque des revendications précédentes, ladite première partie de conduit (32) et/ou ladite seconde partie de conduit (42) comprenant une partie tubulaire (34, 44), de préférence une partie tubulaire (34, 44) cylindrique.
  7. Lave-linge (1) selon l'une quelconque des revendications précédentes, ladite première entrée (31) s'étendant le long d'un axe (X) et ladite première partie de conduit (32) s'étendant le long d'un axe (Y), ledit axe (X) de ladite première entrée (31) et ledit axe (Y) de ladite première partie de conduit (32) se croisant à un angle supérieur ou égal à 90° et inférieur à 180°, de préférence à un angle compris entre 135° et 90°, de préférence encore à un angle égal à 90°.
  8. Lave-linge (1) selon l'une quelconque des revendications précédentes, ladite seconde entrée (41) s'étendant le long d'un axe (X') et ladite seconde partie de conduit (42) s'étendant le long d'un axe (Y'), ledit axe (X') de ladite seconde entrée (41) et ledit axe (Y') de ladite seconde partie de conduit (42) se croisant à un angle supérieur ou égal à 90° et inférieur à 180°, de préférence à un angle compris entre 135° et 90°, de préférence encore à un angle égal à 90°.
  9. Lave-linge (1) selon les revendications 7 et 8, ledit axe (X) de ladite première entrée (31) et ledit axe (X') de ladite seconde entrée (41) étant sensiblement parallèles l'un à l'autre.
  10. Lave-linge (1) selon les revendications 7 et 8, ledit axe (Y) de ladite première partie de conduit (32) et ledit axe (Y') de ladite seconde partie de conduit (42) étant sensiblement parallèles l'un à l'autre.
  11. Lave-linge (1) selon l'une quelconque des revendications précédentes, ladite première partie de conduit (32) de ladite conduite de transport d'eau d'alimentation (30) et ladite seconde partie de conduit (42) de ladite conduite de transport d'eau de fuite (60) étant deux parties distinctes dudit premier raccord (21).
  12. Lave-linge (1) selon l'une quelconque des revendications précédentes, ladite conduite de transport d'eau d'alimentation (30) et ladite conduite de transport d'eau de fuite (60) définissant un élément unitaire intégral complet.
  13. Lave-linge (1) selon la revendication 12, ladite conduite de transport d'eau d'alimentation (30) et ladite conduite de transport d'eau de fuite (60) étant obtenues en une construction monobloc, de préférence en matière plastique, de préférence encore par moulage.
  14. Lave-linge (1) selon l'une quelconque des revendications précédentes, ledit dispositif de sécurité antirefoulement (20 ; 120) comprenant en outre un agencement de couvercle (90 ; 190) raccordé de manière amovible audit premier raccord (21), ledit agencement de couvercle (90 ; 190) étant approprié pour protéger au moins ladite première partie de conduit (32) dudit premier raccord (21).
  15. Dispositif de sécurité antirefoulement (20 ; 120) pour un lave-linge (1) selon l'une quelconque des revendications précédentes, comprenant un conduit (80) ayant au moins un tuyau intérieur (25) pour fournir de l'eau d'une conduite d'alimentation externe (E) à ladite au moins une entrée d'alimentation en eau (7) de ladite unité d'alimentation en eau (5) et au moins un tuyau extérieur (26) entourant ledit tuyau intérieur (25) de sorte qu'un espace (28) soit défini entre lesdits tuyaux (25, 26) pour retenir en son sein d'éventuelles fuites d'eau, ledit tuyau intérieur (25) s'étendant longitudinalement entre une extrémité proximale et une extrémité distale (25a) et ledit tuyau extérieur (26) s'étendant longitudinalement entre une extrémité proximale et une extrémité distale (26a),
    caractérisé en ce que ledit dispositif de sécurité antirefoulement (20 ; 120) comprend un premier raccord (21) pour le raccordement desdites extrémités distales (25a, 26a) desdits tuyaux (25, 26) audit lave-linge (1), ledit premier raccord (21) comprenant :
    une conduite de transport d'eau d'alimentation (30) comprenant une première entrée (31) pour le raccordement à ladite extrémité distale (25a) dudit tuyau intérieur (25) et une première partie de conduit (32) pour le raccordement à ladite au moins une entrée d'eau (7) de ladite unité d'alimentation en eau (5), ladite conduite de transport d'eau d'alimentation (30) reliant de manière fluide ledit tuyau intérieur (25) à ladite unité d'alimentation en eau (5) ;
    une conduite de transport d'eau de fuite (60) comprenant une seconde entrée (41) pour le raccordement à ladite extrémité distale (26a) dudit tuyau extérieur (26) et une seconde partie de conduit (42) pour l'adduction de ladite eau de fuite à l'intérieur de ladite armoire (2), ladite conduite de transport d'eau de fuite (60) reliant de manière fluide ledit espace (28) à l'intérieur de ladite armoire (2).
EP15179243.9A 2015-07-31 2015-07-31 Lave-linge équipé d'un dispositif de sécurité antirefoulement Active EP3124673B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15179243.9A EP3124673B1 (fr) 2015-07-31 2015-07-31 Lave-linge équipé d'un dispositif de sécurité antirefoulement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15179243.9A EP3124673B1 (fr) 2015-07-31 2015-07-31 Lave-linge équipé d'un dispositif de sécurité antirefoulement

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EP3124673A1 EP3124673A1 (fr) 2017-02-01
EP3124673B1 true EP3124673B1 (fr) 2020-12-23

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CN108755003B (zh) * 2018-05-28 2023-08-22 重庆海尔洗衣机有限公司 一种洗衣机及溢水检测方法

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Publication number Priority date Publication date Assignee Title
IT1208823B (it) * 1985-07-31 1989-07-10 Eltek Spa Dispositivo a cartuccia reagente al l acqua in grado di attivare mezzi antiallagamento particolarmente per macchine lavatrici
DE3931528A1 (de) * 1989-09-21 1991-04-11 Bosch Siemens Hausgeraete Sicherheitsschlauch fuer den hydraulisch gesicherten anschluss von wasserfuehrenden haushaltmaschinen
IT1308378B1 (it) * 1999-02-19 2001-12-17 Eltek Spa Rilevatore di liquido e dispositivo di sicurezza antiallagamentoimpiegante tale rilevatore.

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