EP2314752A1 - Anti-flooding safety device for a household appliances - Google Patents
Anti-flooding safety device for a household appliances Download PDFInfo
- Publication number
- EP2314752A1 EP2314752A1 EP10181887A EP10181887A EP2314752A1 EP 2314752 A1 EP2314752 A1 EP 2314752A1 EP 10181887 A EP10181887 A EP 10181887A EP 10181887 A EP10181887 A EP 10181887A EP 2314752 A1 EP2314752 A1 EP 2314752A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pipe
- end portion
- tubular element
- connector body
- corrugated pipe
- 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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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 239000004800 polyvinyl chloride Substances 0.000 description 7
- 229920000915 polyvinyl chloride Polymers 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
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- 239000007924 injection Substances 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
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- 238000011144 upstream manufacturing Methods 0.000 description 3
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- 239000002184 metal Substances 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 229920003031 santoprene Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
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- 230000009471 action Effects 0.000 description 1
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- 235000013361 beverage Nutrition 0.000 description 1
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- 238000001816 cooling Methods 0.000 description 1
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Images
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
Definitions
- the present invention relates to an anti-flooding safety device for electrical household appliances, in particular for washing appliances.
- the invention has been developed with particular reference to devices of the type referred to above designed to be operatively set between a source of supply of a liquid and an electrical household appliance.
- anti-flooding devices which are able to provide a practically continuous control of the presence of possible leaks.
- Said devices generally envisage at least one valve, operative upstream of a water-intake pipe, and sensor means, arranged in a water-collecting tray, positioned in the electrical household appliance.
- the leakage water reaches said collecting tray, with the consequent intervention of the sensor means, provided for controlling closing of the aforesaid valve.
- valves used for the purpose are typically actuated in an electrical, mechanical, or pneumatic way;
- the sensor means are typically of an electromechanical type (for example, based upon the use of a float and a microswitch) or else basically of a mechanical type (for example, based upon the use of an anhydrous sponge, designed to expand when it comes into contact with a liquid).
- Some safety devices are equipped also with an external pipe, which surrounds the water-intake pipe. In the case of failure of the latter, the external pipe enables confluence in the aforesaid collecting tray of the leakage liquid so as to cause closing of the safety valve (see, for example, FR-A-2 742 514 ).
- the gap defined between the two pipes is designed to withhold the leakage water directly, instead of conveying it into a collecting tray.
- the presence of water inside the gap causes an increase of volume of an anhydrous sponge, which controls accordingly closing of the valve of the device (see, for example, IT-B-1 207 365 ).
- Other two-pipe devices are instead simply prearranged for withholding the water and visually signalling the presence thereof within the gap in order to inform the user regarding the need for an intervention of assistance (see, for example, DE-A-10 12 6104 ).
- the water-intake pipe i.e., the internal pipe
- the internal pipe is typically a pipe with smooth surfaces, made of polyvinyl chloride (PVC), with other possible materials or reinforcement fibres.
- the external pipe is typically a corrugated pipe, usually made of polypropylene (PP).
- PP polypropylene
- a kink or local squeezing can determine excessive pressures in the water-intake pipe, that cannot be directly detected by the user and are potentially harmful both for the integrity of the device and for proper operation of the electrical household appliance.
- Traditional pipes made of PVC are moreover relatively costly and heavy.
- the main purpose of the present invention is to overcome the aforesaid drawbacks. This and other purposes still are achieved, according to the present invention, by an anti-flooding safety device and by a corresponding preferred method of production presenting the characteristics of the annexed claims, which form an integral part of the descriptive content of the present patent application.
- FIG. 1 Designated as a whole by 1 in Figure 1 is an anti-flooding safety device for electrical household appliances according to the invention.
- the device 1 which is in particular indicated for use in combination with washing appliances, such as dish-washers, comprises a connector body 2, a water-intake pipe 20, or internal pipe, and an external pipe 30.
- the connector body or valve body, is preferably made of plastic or thermoplastic material and defines within it a conduit 3 for passage of water.
- the body 2 is configured so that the conduit 3 has an inlet 3a and an outlet 3b, between which there extends a part of conduit in which means for shutting-off the water are operative.
- said means comprise a solenoid valve 4.
- the solenoid valve 4 is of a type and presents a form of operation in themselves known (see, for example, FR-A-2 742 514 ).
- the solenoid valve 4 has an electromagnet 5 equipped with supply terminals, one of which is designated by 6.
- the solenoid valve 4 comprises then an open/close element 7, actuated by means of an armature or movable core 8, which is housed in a respective body 9.
- the latter has a threaded part, screwed in an open seat equipped with internal screw, which is made in the body 2 and opens onto the conduit 3.
- the electromagnet 5, which is preferably enclosed in a protective coating 10 obtained by overmoulding of thermoplastic material, is mounted on the body 9.
- the open/close element 7 - through the movable core 8 - is held by a spring in a resting position, which does not allow passage of water from the inlet 3a to the outlet 3b.
- the core 8 is induced to displace to overcome the force of contrast of the aforesaid spring: in this case, the open/close element 7 is designed to assume a position of opening, which enables passage of the flow of water through the conduit 3.
- an external ring nut 11 is mounted for coupling of the device 1 to a source of supply of the water, such as a tap (not represented).
- a source of supply of the water such as a tap (not represented).
- a filter 12 mounted in the upper part of the conduit 3, upstream of the solenoid valve 4 are a filter 12 and a flow regulator 13.
- the lower area of the valve body 2 has a substantially cylindrical coupling part 2a, defined in which is the outlet 3b. Defined on the outer surface of said part 2a are teeth or annular retention reliefs 2b.
- the internal pipe 20 is a corrugated pipe, i.e., one with undulated wall.
- the outer surface of the pipe 20 (but also the inner one) is defined by a series of reliefs and recesses, preferably annular and parallel to one another and arranged according to a regular series. Said reliefs and recesses could, on the other hand, have a spiral pattern along the pipe 20.
- the wall or the cross section of the pipe 20 has a pattern with square profile, i.e., with reliefs and recesses defined by contiguous stretches of wall that are substantially mutually orthogonal (a sort of "square wave").
- the aforesaid reliefs and recesses could have a substantially trapezoidal profile, i.e., at least in part delimited by slightly inclined or divergent stretches of wall.
- the pipe 20 could also have a pattern similar to what is shown for the external pipe 30, with substantially rounded external profile, i.e., with reliefs and recesses radiused by stretches of wall that are semicircular or shaped like the arc of a circumference (a sort of "sinusoidal wave").
- the internal corrugated pipe 20 is preferably made of polypropylene.
- a pipe of this sort has characteristics of flexibility - understood as capacity for deformation without squeezing or kinking or local curvatures - decidedly better than the traditional water-intake pipes made of PVC.
- a corrugated pipe of the type referred to above presents characteristics of elasticity that are inferior to those of pipes made of PVC.
- at least one end portion of the internal pipe 20 is coupled to a first end portion 21 a of a respective tubular connection element, designated as a whole by 21.
- the tubular element 21 has, in its portion 21 a, an axial stretch of inner surface structured for engagement with an axial stretch of the outer surface of the pipe 20.
- the tubular element 21 has then a second end portion 21b designed to be engaged or fitted on the coupling part 2a of the body 2.
- the inner surface of the element 21 defines - in the portion 21a - a regular series of reliefs and recesses, where the surface reliefs of the element 21 are engaged in the recesses of the outer surface of the pipe 20, whilst the reliefs of the outer surface of the pipe 20 are engaged in the surface recesses of the tubular element 21. Thanks to the aforesaid characteristics, the mechanical coupling and the hydraulic seal between the pipe 20 and the tubular element 21 are excellent.
- the tubular member 21 is co-moulded with, or overmoulded directly on, the terminal stretch of the pipe 20, so that part of the inner surface of the tubular element 21 and part of the outer surface of the pipe 20 are practically complementary to one another.
- the pipe 20 and the tubular element 21 can be intimately joined to one another also as a result of an adhesion or bonding of the respective constituent materials, which may be of types compatible for said purpose.
- the second end portion 21b of the tubular element 21 is, as has been said, fitted on the part 2a of the valve body 2, on which the reliefs 2b are provided.
- a mechanical clamping component 22 constituted, for example, by a metal clinching bushing, which can be locally deformed by tightening the tubular element 21 on the part 2a of the body 2.
- the presence of the reliefs and of the recesses of the tubular element 21, albeit preferable, is not strictly necessary for the purposes of the implementation of the invention.
- the inner surface of the portion 21 a of the element 21 can be substantially smooth, in which case at least one mechanical element is provided, designed to clamp or grip externally said portion 21 a on the pipe 20.
- Such a gripping element preferably of an annular shape, can be of construction conceptually similar to the component 22, or else be constituted by an appropriate stretch or prolongation of said component 22.
- the material constituting the tubular element 21 is preferably an elastic synthetic material, such as an elastomer (for example, Santoprene®) in order to enable an easy fitting of the element itself on the part 2a of the body 2.
- an elastomer for example, Santoprene®
- the upper end of the pipe 20 is not directly in contact with or fitted on the part 2a of the body 2.
- the tubular element 21 can present an intermediate portion between the end portions 21a, 21b, which sets the outlet 3b in fluid communication with the pipe 20. In this way, there is prevented the risk that any curvature of the pipe 20 in the proximity of the part 2a of the valve body 2 will be such as to jeopardize the quality of the hydraulic seal and of the mechanical coupling between the two parts in question.
- the corrugated external pipe 30 encloses or surrounds at least partially the pipe 20 and has the function of collecting, and/or withholding, and/or conveying the leakage water in the case of failure of the pipe 20, or else in the case of occasional leaks from the body 2 or from the element 21.
- a gap 31 formed between the two pipes 20, 30 is a gap 31, designed to receive the leakage water, in order to withhold it and/or convey it even when under pressure.
- an electrical cable 32 there extends, in the gap 31, an electrical cable 32, the conductors 32a, 32b of which are connected, at respective first ends, to the terminals 7 of the solenoid valve 4.
- the second ends of the conductors 32a, 32b are equipped with respective terminals 33a, 33b, for connection to the control of the device or the control system of the interlocked electrical household appliance, which preferably comprises sensor means for detecting leakage of water of a type in itself known.
- the electrical cable 32 could be connected, instead of to a valve, to other members of the device itself, and in particular to detection means (constituted, for example, by a sensor for detecting the presence of liquid that operates inside the gap 31, or else by a flowmeter that operates along the pipe 20 or upstream thereof, for example associated to the body 2).
- the electromagnet 5 of the valve 4 is coated directly with a protective and insulating coating 40, made of thermoplastic material.
- the coating 40 coats, at least partially, also the valve body 2, substantially according to the technique described in the aforesaid document FR-A-2 742 514 , the teachings of which, in this regard, are understood as being incorporated herein for reference.
- the coating 40 forms a further substantially cylindrical coupling part 41, on the outer surface of which coupling teeth or projections 41a are formed, similar to the ones present on the part 2a of the body 2.
- a portion of the upper end of the external pipe 30 is coupled to the part 41 of the coating 40 via a respective hollow connection element, designated by 42.
- connection element 42 fulfils functions of coupling and seal substantially similar to those of the tubular element 21.
- connection element 42 has - on the inner surface of one of its first end portions 42a - a series of reliefs and recesses, coupled with the recesses and reliefs defined on the outer surface of the corrugated external pipe 30.
- a second end portion 42b of the element 42 is instead fitted on the part 41 of the coating 40.
- a metal clinching bushing 43 deformable locally for gripping the element 42 on the part 41.
- the connection element 42 can also be overmoulded on the respective terminal stretch of the external pipe 30 and made of an elastic synthetic material, such as Santoprene®.
- connection element 42 it is possible to apply the variant embodiments previously mentioned in relation to the pipe 20 and the tubular element 21, as regards the profile of the projections and of the recesses, the smooth conformation of the inner surface of the portion 42a, the provision of an external gripping element for the portion 42a, the latter being configured as a component in itself or else as prolongation of the element 43, and so forth.
- the lower end of the corrugated internal pipe 20 can be equipped, if need be, with a tubular element 23, of construction similar to the tubular element previously designated by 21.
- the lower end of the pipe 30 can be provided with an element similar to the element 42 or else to the element 21 or 23.
- the element 21, 23 can be overmoulded directly on the terminal region of the pipe 30 and/or 40.
- Illustrated schematically in Figures 3-5 is a possible apparatus or mould that can be used for said purpose.
- the apparatus designated as a whole by 50, comprises three parts, and in particular a central part or insert 51 and two peripheral half-moulds 52, 53.
- Each half-mould 52, 53 has a respective impression 52a, 53a ( Figure 5 ), which is to define a respective portion of the external profile of the element 21.
- the remaining portion of the profile of the element 21 is instead defined in part by the insert 51 and in part directly by a terminal portion of the pipe 20.
- Formed in the half-mould 52 is a conduit 54, for injection of the moulding or overmoulding material.
- the insert 51 has a cylindrical part 51a having a distal end 51b with reduced cross section or diameter, configured to enable partial penetration in the end of the corrugated pipe 20, in order to provide a seal suitable for preventing the possibility of the overmoulding material penetrating inside the pipe itself during the process of injection.
- the maximum diameter of the end 51b can be slightly greater than the internal diameter of the pipe 20.
- the end of the pipe 20 is fitted on the region 51a of the insert 51, with the two half-moulds 52, 53 in the open position, i.e., divaricated (as shown in Figure 5 ).
- the material fills the aforesaid space 55 completely, thus forming the tubular element 21 directly on the pipe 20.
- a first inner surface of the portion 21a of the element 21, provided with reliefs and recesses, is determined by the external shape of the pipe 20, whilst a second inner surface of the portion 21b of the element 21, which is substantially smooth, is determined by the cylindrical part 51 a of the insert 51.
- the half-moulds 52, 53 are opened, as may be seen in Figure 5 , and the pipe 20 with the element 21 coupled thereto can be slid off the insert 51.
- an apparatus conceptually similar to the one illustrated in Figures 3-5 can be used for the purposes of overmoulding the connection element 42 on the corrugated external pipe 30, or else for the purposes of moulding on the corrugated pipe 30 other elements (not shown), preferably made of elastomer.
- An apparatus conceptually similar to the one illustrated in Figures 3-5 can also be used for the purposes of just moulding a tubular element 21, designed to be mounted at a later date on the corrugated pipe 20, exploiting, for example, the elastic properties of the elastomeric material with which said element is preferably made.
- the apparatus 50 is equipped with an insert 51 having a shape different from the one exemplified, or else is equipped with a further insert, having at least in part the external shape of the corrugated pipe 20, or else having a completely smooth cylindrical surface (according to whether the aim is to provide a tubular element 21 with inner surface having reliefs and recesses or else completely smooth).
- the safety device according to the invention is less expensive to produce than the devices according to the known art, thanks to the replacement of the polyvinyl-chloride reinforced water-intake pipe with a pipe of simpler construction, which requires a reduced amount of material of lower cost and that has lower weight.
- both of the pipes of the device according to the invention may be formed with one and the same material, in particular polypropylene, simplifies disposal of the product at the end of its useful life.
- the elimination of the water-intake pipe made of polyvinyl chloride hence enables important benefits to be obtained also from the ecological standpoint.
- the use of an internal corrugated pipe prevents any risk of squeezing or local kinks typical of the known art, with evident advantages in terms of reliability and safety of the device.
- the tubular connection element when envisaged, simplifies the modalities of mechanical coupling and sealing of the corrugated pipe internal to the valve body of the device.
- the preferred field of application for the invention is that of anti-flooding safety devices equipped with electrical, or mechanical, or pneumatic shut-off means.
- the invention is in any case suitable for use also in relation to anti-flooding safety devices without valve means or that can be associated to independent shut-off means, i.e., of the type with simple visual warning or else of the type provided with only means for detection of an anomalous condition (such as water-leakage sensor means, or else flowmeter means, without necessarily providing a valve).
- the device according to the invention may be used to advantage in washing appliances, such as washing machines and dish-washers, but is in general applicable also to other types of electrical household appliances connected to a source of supply of liquid (such as, for example, refrigerators equipped with dispensers of beverages or cooled water).
- a source of supply of liquid such as, for example, refrigerators equipped with dispensers of beverages or cooled water.
- the elements 21 and 42 are made of a single body.
- the element 21 or 42 can possibly exert a sealing action on both of the pipes 20, 30.
- the formation of both of the corrugated pipes of the device 1 with one and the same material can enable a more convenient seal between them (for example, if they are both overmoulded with a single material, preferably an elastomer, which is glued or bonded to both of the corrugated pipes 20 and 30 and/or to at least part of the body 2 and/or of its coating 40).
- the elements 21 and 42 could also be configured as a piece moulded on itself, subsequently fitted on the pipe 20 and/or on the pipe 30.
- the aforesaid elements can be formed with material designed to shrink after being fitted on the pipe 20 and/or 30, for example following upon a thermal stress (heat-shrinking materials) or following upon cessation of a stress, for example a mechanical or thermal stress (materials with shape-memory effect).
- the safety-valve means that equip the device according to the invention can also be pneumatically or else mechanically actuated.
- an air conduit for example, a small flexible conduit
- a suitable transmission for example a Bowden cable with corresponding sheath
- the tubular element 21 could be overmoulded on the pipe 20, and the connection element 42 could be subsequently overmoulded both on a part of the element 21 and on a part of the external pipe 30.
- the device according to the invention can possibly comprise a plurality of corrugated pipes 20, 30 connected to one another in series, for example via intermediate-connection means.
- Said solution is envisaged in the case of modular safety devices or ones equipped with extensions, or else of the type in which the valve body is located in a position intermediate between two stretches of corrugated pipe 20, 30.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Cookers (AREA)
- Filters For Electric Vacuum Cleaners (AREA)
- Centrifugal Separators (AREA)
- Lubricants (AREA)
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
Abstract
Description
- The present invention relates to an anti-flooding safety device for electrical household appliances, in particular for washing appliances. The invention has been developed with particular reference to devices of the type referred to above designed to be operatively set between a source of supply of a liquid and an electrical household appliance.
- The use of an electrical household appliance supplied with a liquid, or in which a liquid flows, entails in general the risk of flooding of the premises where the appliance is installed on account of possible accidental leaks. Said leaks may, for example, be due to malfunctioning of devices internal to the electrical household appliance or to failure of the pipes for delivery or discharge of the liquid.
- For the above purpose, anti-flooding devices are known which are able to provide a practically continuous control of the presence of possible leaks. Said devices generally envisage at least one valve, operative upstream of a water-intake pipe, and sensor means, arranged in a water-collecting tray, positioned in the electrical household appliance. In the event of malfunctioning of the internal devices of the electrical household appliance, the leakage water reaches said collecting tray, with the consequent intervention of the sensor means, provided for controlling closing of the aforesaid valve.
- The valves used for the purpose are typically actuated in an electrical, mechanical, or pneumatic way; the sensor means are typically of an electromechanical type (for example, based upon the use of a float and a microswitch) or else basically of a mechanical type (for example, based upon the use of an anhydrous sponge, designed to expand when it comes into contact with a liquid).
- Some safety devices are equipped also with an external pipe, which surrounds the water-intake pipe. In the case of failure of the latter, the external pipe enables confluence in the aforesaid collecting tray of the leakage liquid so as to cause closing of the safety valve (see, for example,
FR-A-2 742 514 IT-B-1 207 365 DE-A-10 12 6104 ). - In known devices, the water-intake pipe, i.e., the internal pipe, is typically a pipe with smooth surfaces, made of polyvinyl chloride (PVC), with other possible materials or reinforcement fibres. The external pipe is typically a corrugated pipe, usually made of polypropylene (PP). One of the major problems that are encountered in the safety devices according to the known art is represented by the poor flexibility of the internal pipe made of PVC, which, in the case of narrow-radius curvature of the external pipe, tends to form kinks or squeeze on itself, determining a drastic reduction in the section of passage for the liquid. A kink or local squeezing can determine excessive pressures in the water-intake pipe, that cannot be directly detected by the user and are potentially harmful both for the integrity of the device and for proper operation of the electrical household appliance. Traditional pipes made of PVC are moreover relatively costly and heavy.
- The main purpose of the present invention is to overcome the aforesaid drawbacks. This and other purposes still are achieved, according to the present invention, by an anti-flooding safety device and by a corresponding preferred method of production presenting the characteristics of the annexed claims, which form an integral part of the descriptive content of the present patent application.
- Further purposes, characteristics, and advantages of the present invention will emerge clearly from the ensuing detailed description and from the annexed plate of drawings, which is provided purely by way of explanatory and non-limiting example and in which:
-
Figure 1 is a schematic, partially cross-sectional view of an anti-flooding safety device according to the invention; -
Figure 2 is a schematic, partially cross-sectional view of a water-intake pipe forming part of the device ofFigure 1 ; and -
Figures 3-5 are schematic cross-sectional views of moulding apparatus that can be used for the purposes of the production of part of the pipe ofFigure 2 , in three different operating conditions. - Designated as a whole by 1 in
Figure 1 is an anti-flooding safety device for electrical household appliances according to the invention. The device 1, which is in particular indicated for use in combination with washing appliances, such as dish-washers, comprises aconnector body 2, a water-intake pipe 20, or internal pipe, and anexternal pipe 30. - The connector body, or valve body, is preferably made of plastic or thermoplastic material and defines within it a
conduit 3 for passage of water. Thebody 2 is configured so that theconduit 3 has aninlet 3a and anoutlet 3b, between which there extends a part of conduit in which means for shutting-off the water are operative. In the example shown, said means comprise asolenoid valve 4. - The
solenoid valve 4 is of a type and presents a form of operation in themselves known (see, for example,FR-A-2 742 514 solenoid valve 4 has anelectromagnet 5 equipped with supply terminals, one of which is designated by 6. Thesolenoid valve 4 comprises then an open/close element 7, actuated by means of an armature ormovable core 8, which is housed in arespective body 9. The latter has a threaded part, screwed in an open seat equipped with internal screw, which is made in thebody 2 and opens onto theconduit 3. Theelectromagnet 5, which is preferably enclosed in aprotective coating 10 obtained by overmoulding of thermoplastic material, is mounted on thebody 9. When theelectromagnet 5 is not supplied, the open/close element 7 - through the movable core 8 - is held by a spring in a resting position, which does not allow passage of water from theinlet 3a to theoutlet 3b. In the case of supply of theelectromagnet 5, instead, thecore 8 is induced to displace to overcome the force of contrast of the aforesaid spring: in this case, the open/close element 7 is designed to assume a position of opening, which enables passage of the flow of water through theconduit 3. - In the upper area of the
valve body 2, in which theinlet 3a is defined, an external ring nut 11 is mounted for coupling of the device 1 to a source of supply of the water, such as a tap (not represented). Mounted in the upper part of theconduit 3, upstream of thesolenoid valve 4 are afilter 12 and aflow regulator 13. The lower area of thevalve body 2 has a substantiallycylindrical coupling part 2a, defined in which is theoutlet 3b. Defined on the outer surface of saidpart 2a are teeth orannular retention reliefs 2b. - According to the main aspect of the invention, the
internal pipe 20 is a corrugated pipe, i.e., one with undulated wall. In practice, the outer surface of the pipe 20 (but also the inner one) is defined by a series of reliefs and recesses, preferably annular and parallel to one another and arranged according to a regular series. Said reliefs and recesses could, on the other hand, have a spiral pattern along thepipe 20. - In the embodiment represented in
Figures 1 and 2 , the wall or the cross section of thepipe 20 has a pattern with square profile, i.e., with reliefs and recesses defined by contiguous stretches of wall that are substantially mutually orthogonal (a sort of "square wave"). Alternatively, the aforesaid reliefs and recesses could have a substantially trapezoidal profile, i.e., at least in part delimited by slightly inclined or divergent stretches of wall. Thepipe 20 could also have a pattern similar to what is shown for theexternal pipe 30, with substantially rounded external profile, i.e., with reliefs and recesses radiused by stretches of wall that are semicircular or shaped like the arc of a circumference (a sort of "sinusoidal wave"). - The internal
corrugated pipe 20 is preferably made of polypropylene. A pipe of this sort has characteristics of flexibility - understood as capacity for deformation without squeezing or kinking or local curvatures - decidedly better than the traditional water-intake pipes made of PVC. In contrast, a corrugated pipe of the type referred to above presents characteristics of elasticity that are inferior to those of pipes made of PVC. For said reason, according to a preferred characteristic of the invention, at least one end portion of theinternal pipe 20 is coupled to afirst end portion 21 a of a respective tubular connection element, designated as a whole by 21. Thetubular element 21 has, in itsportion 21 a, an axial stretch of inner surface structured for engagement with an axial stretch of the outer surface of thepipe 20. Thetubular element 21 has then asecond end portion 21b designed to be engaged or fitted on thecoupling part 2a of thebody 2. As may be seen also inFigure 2 , the inner surface of theelement 21 defines - in theportion 21a - a regular series of reliefs and recesses, where the surface reliefs of theelement 21 are engaged in the recesses of the outer surface of thepipe 20, whilst the reliefs of the outer surface of thepipe 20 are engaged in the surface recesses of thetubular element 21. Thanks to the aforesaid characteristics, the mechanical coupling and the hydraulic seal between thepipe 20 and thetubular element 21 are excellent. - In the preferred embodiment of the invention, the
tubular member 21 is co-moulded with, or overmoulded directly on, the terminal stretch of thepipe 20, so that part of the inner surface of thetubular element 21 and part of the outer surface of thepipe 20 are practically complementary to one another. Thepipe 20 and thetubular element 21 can be intimately joined to one another also as a result of an adhesion or bonding of the respective constituent materials, which may be of types compatible for said purpose. - The
second end portion 21b of thetubular element 21 is, as has been said, fitted on thepart 2a of thevalve body 2, on which thereliefs 2b are provided. On the outside of saidportion 21b there is preferably fitted amechanical clamping component 22, constituted, for example, by a metal clinching bushing, which can be locally deformed by tightening thetubular element 21 on thepart 2a of thebody 2. - It is to be pointed out that the presence of the reliefs and of the recesses of the
tubular element 21, albeit preferable, is not strictly necessary for the purposes of the implementation of the invention. In other words, also the inner surface of theportion 21 a of theelement 21 can be substantially smooth, in which case at least one mechanical element is provided, designed to clamp or grip externally saidportion 21 a on thepipe 20. Such a gripping element, preferably of an annular shape, can be of construction conceptually similar to thecomponent 22, or else be constituted by an appropriate stretch or prolongation of saidcomponent 22. - The material constituting the
tubular element 21 is preferably an elastic synthetic material, such as an elastomer (for example, Santoprene®) in order to enable an easy fitting of the element itself on thepart 2a of thebody 2. - In the non-limiting example represented, the upper end of the
pipe 20 is not directly in contact with or fitted on thepart 2a of thebody 2. For said purpose, thetubular element 21 can present an intermediate portion between theend portions outlet 3b in fluid communication with thepipe 20. In this way, there is prevented the risk that any curvature of thepipe 20 in the proximity of thepart 2a of thevalve body 2 will be such as to jeopardize the quality of the hydraulic seal and of the mechanical coupling between the two parts in question. - Obviously, there is nothing to rule out mounting or fitting the
corrugated pipe 20 directly on the part ofbody 2a, in which case there is preferably provided a suitable external gripping element of the type mentioned above, or else on the end part of thepipe 20 and on the part ofbody 2a there is overmoulded a material that coats both of them. - The corrugated
external pipe 30 encloses or surrounds at least partially thepipe 20 and has the function of collecting, and/or withholding, and/or conveying the leakage water in the case of failure of thepipe 20, or else in the case of occasional leaks from thebody 2 or from theelement 21. As may be appreciated, formed between the twopipes gap 31, designed to receive the leakage water, in order to withhold it and/or convey it even when under pressure. In the embodiment exemplified inFigure 1 , there extends, in thegap 31, anelectrical cable 32, theconductors terminals 7 of thesolenoid valve 4. The second ends of theconductors respective terminals - In other versions of the anti-flooding safety device (not represented), the
electrical cable 32 could be connected, instead of to a valve, to other members of the device itself, and in particular to detection means (constituted, for example, by a sensor for detecting the presence of liquid that operates inside thegap 31, or else by a flowmeter that operates along thepipe 20 or upstream thereof, for example associated to the body 2). - In the embodiment represented, the
electromagnet 5 of thevalve 4 is coated directly with a protective and insulatingcoating 40, made of thermoplastic material. Thecoating 40 coats, at least partially, also thevalve body 2, substantially according to the technique described in the aforesaid documentFR-A-2 742 514 - In its lower region, the
coating 40 forms a further substantiallycylindrical coupling part 41, on the outer surface of which coupling teeth or projections 41a are formed, similar to the ones present on thepart 2a of thebody 2. In the embodiment illustrated, a portion of the upper end of theexternal pipe 30 is coupled to thepart 41 of thecoating 40 via a respective hollow connection element, designated by 42. - The
element 42 fulfils functions of coupling and seal substantially similar to those of thetubular element 21. In said perspective, then, also theconnection element 42 has - on the inner surface of one of itsfirst end portions 42a - a series of reliefs and recesses, coupled with the recesses and reliefs defined on the outer surface of the corrugatedexternal pipe 30. A second end portion 42b of theelement 42 is instead fitted on thepart 41 of thecoating 40. Also in this case, there is preferably provided ametal clinching bushing 43, deformable locally for gripping theelement 42 on thepart 41. Theconnection element 42 can also be overmoulded on the respective terminal stretch of theexternal pipe 30 and made of an elastic synthetic material, such as Santoprene®. - It should be noted that also to the
pipe 30 and to thecorresponding connection element 42 it is possible to apply the variant embodiments previously mentioned in relation to thepipe 20 and thetubular element 21, as regards the profile of the projections and of the recesses, the smooth conformation of the inner surface of theportion 42a, the provision of an external gripping element for theportion 42a, the latter being configured as a component in itself or else as prolongation of theelement 43, and so forth. - As may be seen in
Figure 2 , also the lower end of the corrugatedinternal pipe 20 can be equipped, if need be, with atubular element 23, of construction similar to the tubular element previously designated by 21. In the same way, also the lower end of thepipe 30 can be provided with an element similar to theelement 42 or else to theelement - As already mentioned, in a preferred embodiment of the invention, the
element pipe 30 and/or 40. Illustrated schematically inFigures 3-5 is a possible apparatus or mould that can be used for said purpose. The apparatus, designated as a whole by 50, comprises three parts, and in particular a central part or insert 51 and two peripheral half-moulds mould respective impression Figure 5 ), which is to define a respective portion of the external profile of theelement 21. The remaining portion of the profile of theelement 21 is instead defined in part by theinsert 51 and in part directly by a terminal portion of thepipe 20. Formed in the half-mould 52 is aconduit 54, for injection of the moulding or overmoulding material. - As may be seen in
Figure 5 , theinsert 51 has acylindrical part 51a having adistal end 51b with reduced cross section or diameter, configured to enable partial penetration in the end of thecorrugated pipe 20, in order to provide a seal suitable for preventing the possibility of the overmoulding material penetrating inside the pipe itself during the process of injection. The maximum diameter of theend 51b can be slightly greater than the internal diameter of thepipe 20. For the purposes of the formation of thetubular element 21, the end of thepipe 20 is fitted on theregion 51a of theinsert 51, with the two half-moulds Figure 5 ). This is followed by closing of the half-moulds apparatus 50, which thus comes to be in the condition that may be seen inFigure 3 . In this way, the impressions of the half-moulds insert 51 and the stretch ofpipe 20 internal to theapparatus 50, aspace 55 designed to receive the material to be injected through theconduit 54. - Following upon injection, as may be seen in
Figure 4 , the material fills theaforesaid space 55 completely, thus forming thetubular element 21 directly on thepipe 20. A first inner surface of theportion 21a of theelement 21, provided with reliefs and recesses, is determined by the external shape of thepipe 20, whilst a second inner surface of theportion 21b of theelement 21, which is substantially smooth, is determined by thecylindrical part 51 a of theinsert 51. In this way, at least part of the inner surface of theelement 21 assumes a shape that is complementary to the outer surface of thepipe 20. Following upon an appropriate time for cooling/hardening of the injection material, the half-moulds Figure 5 , and thepipe 20 with theelement 21 coupled thereto can be slid off theinsert 51. - Obviously, an apparatus conceptually similar to the one illustrated in
Figures 3-5 can be used for the purposes of overmoulding theconnection element 42 on the corrugatedexternal pipe 30, or else for the purposes of moulding on thecorrugated pipe 30 other elements (not shown), preferably made of elastomer. An apparatus conceptually similar to the one illustrated inFigures 3-5 can also be used for the purposes of just moulding atubular element 21, designed to be mounted at a later date on thecorrugated pipe 20, exploiting, for example, the elastic properties of the elastomeric material with which said element is preferably made. In said variant, theapparatus 50 is equipped with aninsert 51 having a shape different from the one exemplified, or else is equipped with a further insert, having at least in part the external shape of thecorrugated pipe 20, or else having a completely smooth cylindrical surface (according to whether the aim is to provide atubular element 21 with inner surface having reliefs and recesses or else completely smooth). - The safety device according to the invention is less expensive to produce than the devices according to the known art, thanks to the replacement of the polyvinyl-chloride reinforced water-intake pipe with a pipe of simpler construction, which requires a reduced amount of material of lower cost and that has lower weight. The fact that both of the pipes of the device according to the invention may be formed with one and the same material, in particular polypropylene, simplifies disposal of the product at the end of its useful life. The elimination of the water-intake pipe made of polyvinyl chloride hence enables important benefits to be obtained also from the ecological standpoint. The use of an internal corrugated pipe prevents any risk of squeezing or local kinks typical of the known art, with evident advantages in terms of reliability and safety of the device. The tubular connection element, when envisaged, simplifies the modalities of mechanical coupling and sealing of the corrugated pipe internal to the valve body of the device.
- The preferred field of application for the invention is that of anti-flooding safety devices equipped with electrical, or mechanical, or pneumatic shut-off means. In principle, the invention is in any case suitable for use also in relation to anti-flooding safety devices without valve means or that can be associated to independent shut-off means, i.e., of the type with simple visual warning or else of the type provided with only means for detection of an anomalous condition (such as water-leakage sensor means, or else flowmeter means, without necessarily providing a valve). The device according to the invention may be used to advantage in washing appliances, such as washing machines and dish-washers, but is in general applicable also to other types of electrical household appliances connected to a source of supply of liquid (such as, for example, refrigerators equipped with dispensers of beverages or cooled water).
- It is clear that numerous variants are possible for a person skilled in the branch to the device described by way of example, without thereby departing from the scope of the inventive idea, as defined in the attached claims.
- In accordance with a possible variant embodiment, the
elements element pipes corrugated pipes body 2 and/or of its coating 40). - The
elements pipe 20 and/or on thepipe 30. In this perspective, in accordance with a further possible variant, the aforesaid elements can be formed with material designed to shrink after being fitted on thepipe 20 and/or 30, for example following upon a thermal stress (heat-shrinking materials) or following upon cessation of a stress, for example a mechanical or thermal stress (materials with shape-memory effect). - As has been said, the safety-valve means that equip the device according to the invention can also be pneumatically or else mechanically actuated. In some of these applications, instead of the
cable 32, inside thegap 31 there can extend an air conduit (for example, a small flexible conduit) or else a suitable transmission (for example a Bowden cable with corresponding sheath) in order to transmit the pneumatic or else mechanical command from the sensor means provided to the valve means. - The
tubular element 21 could be overmoulded on thepipe 20, and theconnection element 42 could be subsequently overmoulded both on a part of theelement 21 and on a part of theexternal pipe 30. - The device according to the invention can possibly comprise a plurality of
corrugated pipes corrugated pipe
Claims (15)
- An anti-flooding safety device for a household appliance, in particular for loading or intake of a liquid into the household appliance, the device (1) comprising a connector body (2, 40), a first flexible pipe (20) and a second flexible pipe (30), wherein in the connector body (2, 40) a conduit is defined (3) in fluid communication with the first pipe (20), the latter being provided for conveying a liquid, and wherein at least one part of the first pipe (20) extends longitudinally inside the second pipe (30) in such a way that between at least part of the two pipes (20, 30) a gap is defined (31), which is able to convey and/or withhold possible leakage liquid, the two pipes (20, 30) being impermeable to the liquid, said device being characterized in that the first pipe is a corrugated pipe (20).
- The device according to Claim 1, wherein also the second pipe is a corrugated pipe (30).
- The device according to Claim 1, further comprising means (4) for shutting off the liquid, where in particular the shut-off means (4) are mounted on the connector body (2) and are operative in a stretch of the conduit (3) that is intermediate between an inlet (3a) and an outlet (3b) of the conduit itself, where in particular extending inside the gap (31) are means (32) for transmitting to the shut-off means (4) a closing command, said means being in particular of an electrical, pneumatic or else mechanical type.
- The device according to at least one of Claims 1 to 3, further comprising detection means (33a, 33b).
- The device according to at least one of the preceding claims,- comprising at least one electrical wire or cable (32), in particular extending at least in part in said gap (31) and/or at least in part on the outside of the first corrugated pipe (20) and/or between the first corrugated pipe (20) and the second corrugated pipe (30), and/or- wherein the conduit (3) of the connector body (2) has an inlet (3a) and an outlet (3b), the body (2) being shaped for connection of one of said inlet and said outlet to the first corrugated pipe (20), where in particular the connector body (2, 40) has a coupling part (2a), defined in which is said outlet (3b), on which it is engaged, or fitted on, an end portion of the first corrugated pipe (20),
and/or- further comprising connection means (21, 22) between the connector body (2) and the first corrugated pipe (20). - The device according to Claim 5, wherein at least one end portion of the first corrugated pipe (20) is coupled to a first end portion (21a) of a tubular element (21) forming part of said connection means, where in particular:- the tubular element (21, 23) has at least one axial stretch of surface structured so as to engage with an axial stretch of surface of the first corrugated pipe (20), and/or- the tubular element (21) has a second end portion (21b) engaged or fitted on a coupling part (2a) of the connector body (2, 40),
where in particular said stretches of surface have each an alternation of reliefs and recesses, where in particular:- reliefs of the stretch of surface of the tubular element (21, 23) are engaged in recesses of the stretch of surface of the first corrugated pipe (20), and reliefs of the stretch of surface of the first corrugated pipe (20) are engaged in recesses of the stretch of surface of the tubular element (21, 23), and/or- said reliefs and recesses have a substantially annular shape and are substantially parallel to one another or else have a spiral pattern, and/or- said reliefs and recesses have a substantially square, or rounded, or sinusoidal, or trapezoidal profile, and/or- said stretches of surface are substantially complementary to one another,
and/or- said stretches of surface are substantially bonded or glued to one another. - The device according to Claim 1, comprising at least one tubular element (21, 23) having an end portion (21a) with a surface of a shape substantially complementary to a surface of an end portion of the first corrugated pipe (20), the tubular element (21) having in particular a second end portion (21b) engaged or fitted on a coupling part (2a) of the connector body (2, 40), where in particular said end portion of the first corrugated pipe (20) is axially set at a distance from the coupling part (2a) of the connector body (2, 40), the tubular element (21) having an intermediate portion between its end portions (21 a, 21b) that sets in fluid communication an outlet (2b) of the connector body (2, 40) with said end portion of the first corrugated pipe (20).
- The device according to one or more of Claims 6 to 7, wherein- said end portion of the first corrugated pipe (20) extends inside said first end portion (21 a) of the tubular element (21), and/or- the tubular element (21, 23) is configured as component overmoulded on the first corrugated pipe (20), and/or- fitted on the tubular element (21) is at least one external clamping or tightening component (22),
and where in particular on the at least one of the first and the second end portion (21a, 21b) of the tubular element (21) a clamping component (22) is fitted, made in particular of metal material, operative for withholding the tubular element (21) on the coupling part (2a) of the connector body (2, 40), or on said end portion of the first corrugated pipe (20). - The device according to one or more of the preceding claims, wherein at least one end portion of the second pipe (30) is coupled to a first end portion of a connection element (42), the connection element (42) having at least one axial stretch of surface structured so as to engage with an axial stretch of surface of the second pipe (30).
- The device according to Claim 9, wherein- said stretches of surface have each an alternation of reliefs and recesses, the reliefs of the stretch of surface of the connection element (42) being engaged in recesses of the stretch of surface of the second pipe (30), and the reliefs of the stretch of surface of the second pipe (30) being engaged in recesses of the stretch of surface of the connection element (42), where in particular:- said reliefs and recesses have a substantially annular shape and are substantially parallel to one another or else have a spiral pattern; and/or- said stretches of surface are substantially complementary to one another; and/or- said end portion of the second pipe (30) extends inside said first end portion of the connection element (42); and/or- the connection element (42) is configured as component overmoulded on the second pipe (30),
and/or- the connection element (42) has a second end portion engaged or fitted on a further coupling part (41) made in the connector body (2, 40) or in a coating (40) of the latter, where in particular on the second end portion of the connection element (42) there is fitted a mechanical clamping component (43), made in particular of metal material, operative for withholding in position the connection element (42) on the further coupling part (41) of the connector body (2, 40) or of its coating (40), and/or- the connection element (42) operates in a fluid-tight way on both of the pipes (20, 30) and/or wherein the connection element (42) is overmoulded on both of the pipes (20, 30). - The device according to Claims 6 and 9, wherein:- the tubular element (21) and the connection element (42) are made of a single piece, and/or- the connection element (42) is overmoulded at least in part on the tubular element (21) and on the second pipe (30),
and/or- the tubular element (21, 23) and/or the connection element (42) is/are made of- an elastic synthetic material, in particular an elastomer, and/or- a material designed to shrink following upon a thermal stress, such as a heat-shrinking material, or following upon the cessation of a mechanical or thermal stress, such as a material with shape-memory effect. - The device according to Claim 6, wherein the tubular element (21) operates in a fluid-tight way on both of the pipes (20, 30) and/or is overmoulded on both of the pipes (20, 30).
- A method for fabricating an anti-flooding safety device according to one or more of the preceding claims, comprising the steps ofi) providing the connector body (2);ii) providing the first pipe (20); andiii) coupling the first pipe (20) to the connector body (2),
where in particular:- step iii) comprises the operations of coupling the tubular element (21) to the first pipe (20) and fitting the tubular element (21) on the connection part (2a),- step iii) comprises the operation of overmoulding the tubular element (21) on the first pipe (20). - The method according to Claim 13, further comprising the steps of iv) providing the second pipe (30); andv) coupling the second pipe (30) to the connector body (2),
where in particular:- step v) comprises the operations of coupling the connection element (42) to the second pipe (30) and of fitting the connection element (42) on the further connection part (41),- step v) comprises the operation of overmoulding the connection element (42) on the second pipe (30). - The method according to Claim 13 or 14, wherein an overmoulding operation is provided, which comprises fitting an end portion of the pipe (20) on a part (51b) of a member (51) belonging to a moulding apparatus (50), where in particular the overmoulding operation further comprises the operation of injecting an overmoulding material in a cavity (55) of the apparatus (50), projecting within which are both said member (51) and said end portion of the pipe (20).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL10181887T PL2314752T3 (en) | 2005-12-15 | 2006-12-12 | Anti-flooding safety device for a household appliance |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000876A ITTO20050876A1 (en) | 2005-12-15 | 2005-12-15 | SAFETY DEVICE ANTI-SLIPPING FOR APPLIANCES, IN PARTICULAR WASHING MACHINES |
EP06125957A EP1798326B2 (en) | 2005-12-15 | 2006-12-12 | Anti-flooding safety device for a household appliance |
EP08165774.4A EP2014818B1 (en) | 2005-12-15 | 2006-12-12 | Anti-flooding safety device for household appliances, in particular for washing machines |
Related Parent Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08165774.4A Division-Into EP2014818B1 (en) | 2005-12-15 | 2006-12-12 | Anti-flooding safety device for household appliances, in particular for washing machines |
EP06125957.8 Division | 2006-12-12 | ||
EP08165774.4 Division | 2008-10-02 |
Publications (2)
Publication Number | Publication Date |
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EP2314752A1 true EP2314752A1 (en) | 2011-04-27 |
EP2314752B1 EP2314752B1 (en) | 2013-04-17 |
Family
ID=37823958
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08165774.4A Active EP2014818B1 (en) | 2005-12-15 | 2006-12-12 | Anti-flooding safety device for household appliances, in particular for washing machines |
EP06125957A Active EP1798326B2 (en) | 2005-12-15 | 2006-12-12 | Anti-flooding safety device for a household appliance |
EP10181887.0A Active EP2314752B1 (en) | 2005-12-15 | 2006-12-12 | Anti-flooding safety device for a household appliance |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08165774.4A Active EP2014818B1 (en) | 2005-12-15 | 2006-12-12 | Anti-flooding safety device for household appliances, in particular for washing machines |
EP06125957A Active EP1798326B2 (en) | 2005-12-15 | 2006-12-12 | Anti-flooding safety device for a household appliance |
Country Status (6)
Country | Link |
---|---|
EP (3) | EP2014818B1 (en) |
AT (1) | ATE434678T1 (en) |
DE (1) | DE602006007426D1 (en) |
ES (3) | ES2685769T3 (en) |
IT (1) | ITTO20050876A1 (en) |
PL (3) | PL2314752T3 (en) |
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US5983950A (en) * | 1996-02-29 | 1999-11-16 | Toyoda Gosei Co., Ltd. | Hose structure and method of manufacturing the same |
DE10126104A1 (en) | 2000-05-29 | 2002-01-24 | Eltek Spa | Device for supply of liquid to domestic apparatus, especially washing machine has transparent region comprising essential part of body, second hose designed from opaque material and body consisting of different parts |
-
2005
- 2005-12-15 IT IT000876A patent/ITTO20050876A1/en unknown
-
2006
- 2006-12-12 PL PL10181887T patent/PL2314752T3/en unknown
- 2006-12-12 EP EP08165774.4A patent/EP2014818B1/en active Active
- 2006-12-12 ES ES08165774.4T patent/ES2685769T3/en active Active
- 2006-12-12 AT AT06125957T patent/ATE434678T1/en not_active IP Right Cessation
- 2006-12-12 DE DE602006007426T patent/DE602006007426D1/en active Active
- 2006-12-12 EP EP06125957A patent/EP1798326B2/en active Active
- 2006-12-12 PL PL06125957T patent/PL1798326T5/en unknown
- 2006-12-12 PL PL08165774T patent/PL2014818T3/en unknown
- 2006-12-12 EP EP10181887.0A patent/EP2314752B1/en active Active
- 2006-12-12 ES ES10181887T patent/ES2420782T3/en active Active
- 2006-12-12 ES ES06125957T patent/ES2328513T5/en active Active
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US3299417A (en) * | 1962-07-24 | 1967-01-17 | Dk Mfg Company | Flexible pressure tubes and conduits |
DE3618258A1 (en) * | 1985-07-31 | 1987-02-05 | Eltek Spa | Cartridge device which reacts to water and is capable of activating overflow prevention devices, in particular in washing machines, and overflow prevention device designed for this purpose |
IT1207365B (en) | 1987-02-27 | 1989-05-17 | Eltek Spa | ANTI-FLOODING DEVICE INCLUDING TWO SAFETY VALVES FOR WASHING MACHINES |
FR2742514A1 (en) | 1995-12-13 | 1997-06-20 | Eltek Spa | ANTI-OVERFLOW SAFETY DEVICE AND METHOD FOR MANUFACTURING SUCH A DEVICE, IN PARTICULAR FOR A WASHING MACHINE |
US5983950A (en) * | 1996-02-29 | 1999-11-16 | Toyoda Gosei Co., Ltd. | Hose structure and method of manufacturing the same |
DE10126104A1 (en) | 2000-05-29 | 2002-01-24 | Eltek Spa | Device for supply of liquid to domestic apparatus, especially washing machine has transparent region comprising essential part of body, second hose designed from opaque material and body consisting of different parts |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013211188A1 (en) * | 2013-06-14 | 2014-12-18 | BSH Bosch und Siemens Hausgeräte GmbH | Connector and mounting kit |
US10738930B2 (en) | 2014-05-22 | 2020-08-11 | Schlemmer Gmbh | Coupling arrangement for a domestic appliance, a device for a domestic appliance, and a domestic appliance |
DE102016109967A1 (en) | 2016-05-31 | 2017-11-30 | BSH Hausgeräte GmbH | Hose for a household appliance, hose device, device, household appliance and method for producing a hose for a household appliance |
DE102016110002A1 (en) | 2016-05-31 | 2017-11-30 | BSH Hausgeräte GmbH | Method for producing a corrugated hose for a household appliance, corrugated hose, device and household appliance |
DE102016109967B4 (en) | 2016-05-31 | 2020-01-23 | BSH Hausgeräte GmbH | Hose for a household appliance, hose device, device, household appliance and method for producing a hose for a household appliance |
DE102016110002B4 (en) | 2016-05-31 | 2022-10-13 | BSH Hausgeräte GmbH | Method for producing a corrugated hose for a household appliance, corrugated hose, device and household appliance |
EP3418436A1 (en) | 2017-06-21 | 2018-12-26 | Schlemmer Holding GmbH | Hose device and assembly |
Also Published As
Publication number | Publication date |
---|---|
ES2420782T3 (en) | 2013-08-26 |
EP2014818A3 (en) | 2009-02-18 |
ES2685769T3 (en) | 2018-10-11 |
PL2014818T3 (en) | 2019-03-29 |
PL2314752T3 (en) | 2013-09-30 |
EP2014818A2 (en) | 2009-01-14 |
ES2328513T5 (en) | 2012-05-16 |
ATE434678T1 (en) | 2009-07-15 |
ES2328513T3 (en) | 2009-11-13 |
DE602006007426D1 (en) | 2009-08-06 |
EP2314752B1 (en) | 2013-04-17 |
EP2014818B1 (en) | 2018-06-13 |
EP1798326B1 (en) | 2009-06-24 |
PL1798326T5 (en) | 2012-06-29 |
EP1798326B2 (en) | 2012-01-11 |
ITTO20050876A1 (en) | 2007-06-16 |
PL1798326T3 (en) | 2009-12-31 |
EP1798326A1 (en) | 2007-06-20 |
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