EP0474569A1 - Sicherheitsvorrichtung gegen Überlauf bei einer hydraulischen Verbindung - Google Patents

Sicherheitsvorrichtung gegen Überlauf bei einer hydraulischen Verbindung Download PDF

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Publication number
EP0474569A1
EP0474569A1 EP91420302A EP91420302A EP0474569A1 EP 0474569 A1 EP0474569 A1 EP 0474569A1 EP 91420302 A EP91420302 A EP 91420302A EP 91420302 A EP91420302 A EP 91420302A EP 0474569 A1 EP0474569 A1 EP 0474569A1
Authority
EP
European Patent Office
Prior art keywords
water
safety device
passage
hydraulic connection
pin
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
Application number
EP91420302A
Other languages
English (en)
French (fr)
Other versions
EP0474569B1 (de
Inventor
Jean Claude Buffet
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.)
BorgWarner Transmission Systems Monaco SAM
Original Assignee
Eaton SAM
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 Eaton SAM filed Critical Eaton SAM
Publication of EP0474569A1 publication Critical patent/EP0474569A1/de
Application granted granted Critical
Publication of EP0474569B1 publication Critical patent/EP0474569B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the present invention relates to an overflow safety device for a hydraulic connection.
  • This invention applies more particularly, although not exclusively, to the hydraulic connections of the water supply hoses to washing machines, dishwashers or other similar device, the safety device having the role of limiting the damage. caused by water leaks, in the event of a rupture of the inner hose of the hose, which still includes an outer waterproof sheath.
  • the general known principle of such a safety device lies in the fact that, in the event of a leak, the water under pressure penetrates into the annular space delimited by the internal pipe and the external sheath, and this water can reach the fitting. hydraulic to actuate a valve, incorporated in this fitting, which then closes the passage of water through said fitting.
  • Permanent magnet devices have a rubber membrane which, under the action of water pressure, moves a magnet. This movement has the effect of releasing a metallic core which comes to close the passage of water.
  • An exemplary embodiment is provided by French patent No. 2202286 (ELBI).
  • the temperature variations modify the magnetic characteristics, according to a physical phenomenon well known for magnets in general.
  • the use of more or less hot water to supply washing machines changes the strength of the magnet, and variations in the ambient temperature have the same disturbing effect.
  • the design of the device must take this fact into account by oversizing the magnet, increasing costs, otherwise, under the action of temperature, the magnet may loosen the metal core so that the valve closes the passage of water when there is no real fault requiring this closure.
  • valve for closing the water passage is usually arranged along an axis perpendicular to the general axis of the hydraulic connection.
  • SOCADO French patent application No. 2596130
  • the present invention avoids the drawbacks of permanent magnet devices, sensitive to temperature and expensive, as well as those of current purely mechanical devices, by providing a device of the mechanical type but of a reduced bulk and an improved aesthetic.
  • the invention essentially relates to an overflow safety device for a hydraulic connection, of the type indicated in the introduction, which is arranged in a cylindrical casing coaxial with the hydraulic connection and comprises an annular piston mounted movable in the direction of the axis of the connection inside the cylindrical casing and around the water passage of the connection, the annular piston being subjected to the pressure of possible leaks and being able to occupy a normal position in which it keeps the water passage open and another position to which it is moved under the effect of the pressure created by a leak and in which it causes the closure of the water passage.
  • the passage of water is defined by a tubular part of the connector, in which is axially movable a rod which carries a shutter cooperating with the front end of the tubular part and which is subjected to the effect of a spring tending to bring the shutter closer to this end, while a radially movable pin cooperates on the one hand with the movable rod carrying the shutter and on the other hand with an element linked to the annular piston, so that, in the normal position of the piston, the aforementioned element keeps the pin close to the axis of the fitting, in a position for stopping the movable rod keeping the shutter away from the downstream end of the tubular part, while in the other position of the piston, the aforementioned element releases the pin which itself releases the movable rod, so that the shutter is moved by the spring towards a closed position of the pa ssage of water.
  • the pin also comprises a spring, which is compressed during the initial assembly of the device and tends to move this pin radially away from the axis of the fitting, when it is released by the element linked to the annular piston.
  • This element may consist of a hollow cylinder, integral with the annular piston and sliding with the latter in the cylindrical casing.
  • the radially movable pin can in particular cooperate with the downstream end of the axially movable rod, in order to normally keep the shutter away from the upstream end of the tubular part closing the passage of water.
  • the cylindrical casing is made at least partially transparent, to visualize the passage of the annular piston from its normal position to its other position causing the closure of the water passage.
  • the safety device thus comprises signaling means, allowing the user to be warned of the triggering of the device and of the existence of a leak having caused this triggering.
  • the invention relates to the supply of water to a household appliance 1 such as a washing machine, from a water inlet tap 2 of a distribution network of water.
  • the tap 2 is connected to the machine 1 by a hose 3, which comprises at its upstream end a hydraulic connection 4 for its connection to the outlet of the tap 2, and at its downstream end a coupling 5 for coupling to a solenoid valve. inlet of the machine 1.
  • the hydraulic connection 4 mainly consists of a nut 6 for connection to the valve 2, and an overflow safety device 7, more particularly the subject of the present invention.
  • the hose 3 comprises an inner pipe 8 through which the water is to be brought to the machine 1, and an outer waterproof sheath 9 provided, at its ends, with fixing and sealing collars 10 and 11, associated respectively with fittings 4 and 5.
  • the function of the safety device 7 is to interrupt the arrival of water, if a water leak occurs inside the tight sheath 9, coming from the inner pipe 8 or the crimps 12 and 13 of this pipe respectively on the fittings 4 and 5.
  • the hydraulic connector 4 has a tubular main body 14, upstream of which the nut 6 is mounted, the main body 14 being extended downstream by a coaxial tubular part 15, on which is carried out the crimping 12 of the pipe 8.
  • the overflow safety device 7 has a cylindrical casing 16, crimped on the main body 14 and providing, on the downstream side, at least one axial passage 17 between itself and the part tubular 15 of the body 14. The upstream end of the sheath 9 is fixed by the collar 10 around the downstream part of the casing 16.
  • the tubular part 15 of the body 14 serves as a sliding guide for a rod 18, axially movable and also passing through a guide 19 located further back.
  • the movable rod 18 carries a shutter 20, capable of coming against the upstream end of the tubular part 15.
  • This tubular part 15 is crossed by a movable radial pin 22, with the interposition of a seal 23.
  • the pin 22 has a spring 24 which tends to move it away from the axis of the connector 4.
  • annular piston 25 Between the tubular part 15 and the cylindrical casing 16 is mounted an annular piston 25, to which is fixed on the downstream side a hollow cylinder 26.
  • the assembly formed by the piston 25 and by the cylinder 26 is axially movable inside the casing 16. Due to passage 17, the pressure in the annular chamber 27 located in front of the piston 25 is equal to the pressure prevailing in the annular space 28 between the inner pipe 8 and the outer sheath 9 of the hose 3.
  • An overflow safety device 7 is thus produced which, as a whole, is arranged along the axis A of the hydraulic connector 4, therefore which is coaxial with the passage of water through this connector 4 towards the pipe 8.
  • the safety 7 authorizes the passage of water through the tubular part 15 of the connector 4.
  • the piston 25 occupies its most downstream position, in which the cylinder 26 covers the head of the pin 22, to keep this pin 22 close to the axis A.
  • the pin 22 then stops itself the downstream end of the movable rod 18, so that the shutter 20 remains spaced from the upstream end of the tubular part 15, the spring 21 being compressed as well as spring 24.
  • the casing 16 of the safety device 7 is transparent, in whole or in part, it is easy to visualize the change in position of the piston 25, in particular if the latter is brightly colored.
  • the casing 16 has a mark or an index, which makes it possible to give a meaning to the position of the piston 25 and to indicate that there is a defect.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Actuator (AREA)
  • Safety Valves (AREA)
  • Pipe Accessories (AREA)
EP91420302A 1990-08-23 1991-08-21 Sicherheitsvorrichtung gegen Überlauf bei einer hydraulischen Verbindung Expired - Lifetime EP0474569B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9011046 1990-08-23
FR9011046A FR2666135B1 (fr) 1990-08-23 1990-08-23 Dispositif de securite de debordement pour raccord hydraulique.

Publications (2)

Publication Number Publication Date
EP0474569A1 true EP0474569A1 (de) 1992-03-11
EP0474569B1 EP0474569B1 (de) 1995-09-20

Family

ID=9400109

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91420302A Expired - Lifetime EP0474569B1 (de) 1990-08-23 1991-08-21 Sicherheitsvorrichtung gegen Überlauf bei einer hydraulischen Verbindung

Country Status (5)

Country Link
EP (1) EP0474569B1 (de)
DE (1) DE69113189T2 (de)
ES (1) ES2079617T3 (de)
FR (1) FR2666135B1 (de)
YU (1) YU138491A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0609842A1 (de) * 1993-02-03 1994-08-10 RE-FLEX S.r.l. Lecksicherungsvorrichtung für Wasseranschlussleitungen an elektrischen Haushaltsmaschinen
WO2003014457A1 (en) * 2001-08-08 2003-02-20 Pietro Viola Dishwashers and like
US6546951B1 (en) * 2000-06-05 2003-04-15 John G. Armenia Appliance safety hose
EP1312849A3 (de) * 2001-11-19 2003-06-04 RE-FLEX S.r.l. Rohr für die Verbindung von Wasch- und Spülmaschinen zum Wasserversorgungssystem
ITTO20110337A1 (it) * 2011-04-15 2012-10-16 Eltek Spa Dispositivo di sicurezza contro perdite di fluido per elettrodomestici
ITTO20110338A1 (it) * 2011-04-15 2012-10-16 Eltek Spa Dispositivo di sicurezza contro perdite di fluido per elettrodomestici
KR20140048112A (ko) * 2011-04-15 2014-04-23 엘텍 에스.피.에이. 가정용 기기, 특히 세척기용 넘침-방지 안전 장치
EP2489298B1 (de) 2011-02-18 2015-03-25 BITRON S.p.A. Vormontierte Anordnung für Wasserstoppvorrichtung und Vorrichtung damit

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014195014A2 (de) 2013-06-07 2014-12-11 Kottmann Technology Gmbh Vorrichtung zur zuführung von flüssigkeit zu einem haushaltsgerät
DE102016001940A1 (de) 2015-02-20 2016-08-25 Kottmann Technology Gmbh Vorrichtung zur Unterbindung und/oder Freigabe eines Fluidstroms
CN113445253B (zh) * 2020-03-26 2022-12-09 青岛海尔洗衣机有限公司 洗涤设备及其控制方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2349237A1 (de) * 1972-10-06 1974-04-18 Elbi Spa Vorrichtung mit elektromagnetischer steuerung zur ueberwachung des wasserstandes bei waschmaschinen
DE2928529A1 (de) * 1979-07-14 1981-01-15 Koch & Mueller Armaturenfab Selbstschlussventil fuer gas- und wasserleitungen
DE2940215A1 (de) * 1978-04-19 1981-04-16 Gerd 5204 Lohmar Höffgen Schlauchvorrichtung
DE3516795A1 (de) * 1985-05-09 1986-11-13 Wolfgang 8011 Baldham Dahmen Schlauchbruchsicherungsvorrichtung
FR2596130A1 (fr) * 1986-03-18 1987-09-25 Socado Dispositif de securite pour conduit flexible d'alimentation en eau pour appareils electromenagers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2349237A1 (de) * 1972-10-06 1974-04-18 Elbi Spa Vorrichtung mit elektromagnetischer steuerung zur ueberwachung des wasserstandes bei waschmaschinen
DE2940215A1 (de) * 1978-04-19 1981-04-16 Gerd 5204 Lohmar Höffgen Schlauchvorrichtung
DE2928529A1 (de) * 1979-07-14 1981-01-15 Koch & Mueller Armaturenfab Selbstschlussventil fuer gas- und wasserleitungen
DE3516795A1 (de) * 1985-05-09 1986-11-13 Wolfgang 8011 Baldham Dahmen Schlauchbruchsicherungsvorrichtung
FR2596130A1 (fr) * 1986-03-18 1987-09-25 Socado Dispositif de securite pour conduit flexible d'alimentation en eau pour appareils electromenagers

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0609842A1 (de) * 1993-02-03 1994-08-10 RE-FLEX S.r.l. Lecksicherungsvorrichtung für Wasseranschlussleitungen an elektrischen Haushaltsmaschinen
US6546951B1 (en) * 2000-06-05 2003-04-15 John G. Armenia Appliance safety hose
WO2003014457A1 (en) * 2001-08-08 2003-02-20 Pietro Viola Dishwashers and like
EP1312849A3 (de) * 2001-11-19 2003-06-04 RE-FLEX S.r.l. Rohr für die Verbindung von Wasch- und Spülmaschinen zum Wasserversorgungssystem
EP2489298B1 (de) 2011-02-18 2015-03-25 BITRON S.p.A. Vormontierte Anordnung für Wasserstoppvorrichtung und Vorrichtung damit
CN103764895A (zh) * 2011-04-15 2014-04-30 埃尔特克有限公司 用于家用器具的针对流体泄漏的安全装置
KR20140053884A (ko) * 2011-04-15 2014-05-08 엘텍 에스.피.에이. 가전 제품의 유체 유출에 대한 안전 장치
WO2012140595A3 (en) * 2011-04-15 2013-11-07 Eltek S.P.A. Safety device against fluid leaks for household appliances
KR20140036184A (ko) * 2011-04-15 2014-03-25 엘텍 에스.피.에이. 가전 제품의 유체 유출에 대한 안전 장치
KR20140048112A (ko) * 2011-04-15 2014-04-23 엘텍 에스.피.에이. 가정용 기기, 특히 세척기용 넘침-방지 안전 장치
ITTO20110338A1 (it) * 2011-04-15 2012-10-16 Eltek Spa Dispositivo di sicurezza contro perdite di fluido per elettrodomestici
CN103781393A (zh) * 2011-04-15 2014-05-07 埃尔特克有限公司 用于家用器具的针对流体泄漏的安全装置
WO2012140592A3 (en) * 2011-04-15 2013-01-31 Eltek S.P.A. Safety device against fluid leaks for household appliances
US20140158226A1 (en) * 2011-04-15 2014-06-12 Eltek, S.P.A. Anti-flooding safety device for household appliances, in particular washing machines
ITTO20110337A1 (it) * 2011-04-15 2012-10-16 Eltek Spa Dispositivo di sicurezza contro perdite di fluido per elettrodomestici
RU2582951C2 (ru) * 2011-04-15 2016-04-27 Элтек С.П.А. Устройство защиты от протечек текучей среды для бытовых приборов
RU2582953C2 (ru) * 2011-04-15 2016-04-27 Элтек С.П.А. Устройство защиты от протечек текучей среды для бытовых приборов
US9464725B2 (en) * 2011-04-15 2016-10-11 Eltek S.P.A. Anti-flooding safety device for household appliances, in particular washing machines
CN103781393B (zh) * 2011-04-15 2016-10-19 埃尔特克有限公司 用于家用器具的针对流体泄漏的安全装置
US9568115B2 (en) 2011-04-15 2017-02-14 Eltek S.P.A. Safety device against fluid leaks for household appliances
EP2696739B1 (de) 2011-04-15 2019-03-27 Eltek S.p.A. Leckschutzvorrichtung für haushaltsgeräte

Also Published As

Publication number Publication date
FR2666135A1 (fr) 1992-02-28
ES2079617T3 (es) 1996-01-16
FR2666135B1 (fr) 1993-06-11
DE69113189T2 (de) 1996-05-09
YU138491A (sh) 1994-11-15
EP0474569B1 (de) 1995-09-20
DE69113189D1 (de) 1995-10-26

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