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WO1999040351A1 - Dispositif pour prevenir toute fuite de liquide - Google Patents

Dispositif pour prevenir toute fuite de liquide Download PDF

Info

Publication number
WO1999040351A1
WO1999040351A1 PCT/HU1999/000010 HU9900010W WO9940351A1 WO 1999040351 A1 WO1999040351 A1 WO 1999040351A1 HU 9900010 W HU9900010 W HU 9900010W WO 9940351 A1 WO9940351 A1 WO 9940351A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
flow
liquid
discharge pipe
installation
Prior art date
Application number
PCT/HU1999/000010
Other languages
English (en)
Inventor
József Bereznai
Original Assignee
Bereznai Jozsef
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 Bereznai Jozsef filed Critical Bereznai Jozsef
Priority to AU24358/99A priority Critical patent/AU2435899A/en
Priority to HU0100877A priority patent/HUP0100877A3/hu
Publication of WO1999040351A1 publication Critical patent/WO1999040351A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20—Excess-flow valves
    • F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
    • F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
    • F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
    • F16K17/285—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only the cutting-off member being a ball
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
    • F16K17/366—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position the closure member being a movable ball

Definitions

  • the present invention relates to a device for preventing undesired release of liquid through a substantially flexible discharge pipe of a system or an installation supplied by or containing, at least intermittently, pressurized liquid. More particularly, the device of the invention is intended to be used as a protective device for preventing possible losses and damages caused by liquid released erroneously, from systems or installations in which the discharge pipe consists of, or comprises at least one flexible hose section.
  • a flexible discharge pipe such as a hose
  • Experience and official insurance statistics show that washing machines used in households have been responsible for the overwhelming majority of damages caused by released water.
  • Household washing machines are frequently installed and operated in bathrooms, and at intervals subject to the actual washing programme, their used water is intended to be discharged and released into the bath tub located in the bathroom.
  • the household washing machines are equipped with a flexible discharge tube having an upside down U-shaped free end which has to be applied to the rim or edge of the bath tube prior to starting the machine for proper operation. Due insufficient care and attendance, or vibrations of the washing machine especially during intermediate centrifuging as part of the washing programme chosen, the free end of the flexible discharge pipe of the machine may become misplaced while the washing programme is still continued. Substantial amounts of water released from the washing machine to wrong locations other than the bath tub will cause overflow, roof leakage and other types of severe damage.
  • Another object of the present invention is to provide a simple and low cost device that would be capable of preventing losses and damage of the kind as described above.
  • Another object of the invention is to provide a device by which undesired release of liquid from systems or installations supplied by or containing, at least intermittently, pressurized liquid can be prevented.
  • the device should be of the kind and design that can be simply and easily associated with and applied, as a supplementary kit, to most existing systems and installations, especially washing machines that are in use in a large number of households.
  • this valve means is mounted into, or is connected, downstream in flow direction of the liquid, to a flexible hose section of the discharge tube, and the valve means is designed as a flow-controlled check valve allowing the free flow of liquid therethrough in a substantially vertical upward direction of the liquid flow only.
  • the device further comprises a flow switch capable of converting fluid pressure to an electric signal. Said flow switch is mounted into the discharge tube of the system or installation at a location upstream from the flow-controlled check valve in flow direction of the liquid, and an electric signal output of the flow switch is connected to an electric programme control unit of said system or installation.
  • preferred embodiments of the device according to the present invention may further comprise, as an option, another flow-controlled valve capable of blocking the flow of liquid if a pre-determined threshold value of the flow velocity of the liquid is reached at or exceeded.
  • This another valve should be arranged in the inlet pipe upstream its first at least one flexible hose section in the direction of the flow of liquid.
  • Fig. 1 shows by way of example only, an arrangement of the main functional parts of an embodiment of the present invention in normal state of operation where the device is applied to a conventional washing machine installed and operated in a bathroom,
  • Fig. 2 depicts the same embodiment of the invention in another state of operation where the flexible discharge tube of the washing machine has, by accident, fallen down from the rim of the bath tub and lies on the floor of the bathroom, - 4 -
  • Fig. 3 is a longitudinal section view of a preferred embodiment of the flow- controlled check valve of the device according to the present invention
  • Fig. 4 is a bottom view of the check valve shown in Fig. 3,
  • Fig. 5 is a partly longitudinal section view of an embodiment of the flow switch of the device according to the present invention.
  • Figs. 6 and 7 show longitudinal section views illustrating an embodiment of another valve of the device of the present invention that is applicable, for improved safety, to systems or installations having a flexible inlet pipe.
  • Fig. 1 shows a household washing machine 1 located and installed in a bathroom.
  • a device of the present invention is applied to the washing machine 1 in a manner that a flexible inlet pipe 12 of the washing machine 1 is connected, via a flow-controlled valve 6 which forms an optional unit of the device of the invention only, to a wall mounted water tap 2 for supplying, during operation, pressurized mains water to the machine at times determined by the actual washing programme.
  • the input port of the valve 6 is connected directly to the water tap 2, and the valve 6 is arranged so that during water intake, the mains water flows through said valve 6 in downward vertical direction.
  • the flexible hose inlet pipe 12 is connected to a bottom end output port of valve 6.
  • the valve 6 is designed so that it is capable of blocking the flow of the mains water and thus, preventing damage caused by overflow in cases when a serious sealing failure by rupture, loosening, or separating of the flexible hose inlet pipe 12 occurs.
  • used water is just released through a flexible discharge pipe 10 of the washing machine 1 to a bath tub 3.
  • the flow of water discharged from the washing machine 1 is directed to the bath tub 3 by an upside down U-shaped end portion 11 of the discharge pipe 10 that is applied loosely to the rim of the bath tub 3 to hold the flexible discharge pipe 10 in its desired position relative to the bath tub 3.
  • a flow controlled check valve 4 of the device of the present invention is arranged in a substantially vertically oriented section- of the discharge pipe 10 in its vertically oriented arrangement as shown in Fig. 1 the free upward flow of discharged water through the check valve 4 is allowed for.
  • a flow switch 5 of the device of the invention is mounted into the discharge pipe 10.
  • An electric output (not shown in Figs. 1 and 2 of the drawing) is connected to the programme control unit of the washing machine 1 for interrupting the power supply to the machine 1 when a discharge failure is detected.
  • Fig. 2 of the drawing shows the same installation of the washing machine 1 in another actual state of its operation which occurs, as known by experience and supported by insurance statistics, quite frequently.
  • the end portion 11 of the discharge pipe 10 became separated from the rim of the bath tub 3, and the flexible discharge pipe 10 has fallen down to and lies on the floor of the bathroom with the flow passage through the check valve 4 being oriented other than vertically.
  • Fig. 2 shows the check valve 4 in a substantially horizontal flow passage position. Without the check valve 4 of the device of the invention, in this position of the discharge pipe 10 the water would be released from the washing machine 1 to the floor of the bathroom, and this could easily result in flood and serious damage to the flat or the housing estate incorporating the bathroom.
  • the check valve 4 of the device is according to the invention designed so that it automatically blocks the flow of water therethrough in any orientation of its flow passage other than vertical, in the state of operation shown in Fig. 2 the check valve 4 has shut off the discharge pipe 10 whereby the erroneous release of water is prevented.
  • this closed state of the check valve 4 an increased water pressure is present in the blocked discharge pipe 10 whereby the flow switch 5 has been actuated, and the electric power supply to the washing machine 1 has been interrupted so that further damage that could be caused to the washing machine 1 e.g. by overloading the discharge pump thereof has also been prevented.
  • Figs. 3 and 4 of the attached drawing a preferred embodiment of the flow-controlled check valve 4 of the device of the invention is illustrated, by way of example only.
  • Fig. 3 shows in a longitudinal sectional view the check valve 4 in its normal, vertically oriented state of operation in which it allows for the free upward flow of water.
  • the flow-controlled check valve 4 comprises, arranged within a valve body 40, a substantially resilient valve seat 43 provided by a resilient sealing member such as a rubber ring 44, and a substantially heavy closing member such as a valve ball 41.
  • the specific density of the valve ball 41 must be substantially higher than that of the liquid flowing through the check valve 4.
  • the valve seat 43 is arranged, in the normal operational position of the check valve 4 as shown in Fig. 3 when the liquid is flown - 6 -
  • valve ball 41 is guided slidably between guide ribs 45 which are arranged below the valve seat 43 uniformly distributed on the inner circumference of the valve body 40 in an inner space portion 42 thereof.
  • flow passages 48 are provided between the guide ribs 45 which flow passages 48 allow for the free flow of liquid along and around the valve ball 41 when in the normal operational position of the valve 4, the valve ball 41 is staying in a position clearly distanced from the valve seat 43, as shown in Fig. 3 of the drawing.
  • the lowermost possible position of the valve ball 41 within the valve body 40 is determined by inwardly protruding stop surfaces of the guide ribs 45.
  • Hose nipples 47 and 47 are mounted to the substantially cylindrical valve body 40 at its respective ends so that the check valve 4 can be easily mounted in the flexible discharge pipe 10 of the washing machine 1 in a manner known per se.
  • the size and the material of the valve ball 41 are dimensioned and selected so that in the normal operational position of the check valve 4 as shown in Fig. 3, the dynamic impact pressure of the flow of the discharging water is not sufficient for lifting the valve ball 41 so that it would be substantially displaced towards the valve seat 43.
  • this substantially vertical orientation of the flow passage within the check ball 4 the free upward flow of the discharging water through the check valve 4 is allowed for.
  • the check valve 4 will automatically block the flow of liquid since the force generated by the impact pressure of the flow of water will act against, and it will overcome the substantially reduced flow direction component of the force of gravity, i.e. the weight of the valve ball 43.
  • the valve ball 43 is easily displaceable by the water flowing through the check valve 4, and the impact pressure of the flow of water will move the valve ball 43 to the valve seat 43.
  • the check valve 4 will block the flow of water, and erroneous release of water through the discharge pipe 10 is prevented. Replacing the check valve 4 in its normal operational position as shown in Fig.
  • valve ball 41 i.e. a closing member of spherical shape
  • closing members of different, e.g. piston-like design can equally be used.
  • the valve body may also be designed and shaped as a double-wall valve - 7 -
  • Fig. 5 illustrates, by way of example only, a preferred embodiment of the flow switch 5 of the device according to the invention.
  • the flow switch 5 is to be mounted into the discharge pipe 10 of the system or installation, especially a washing machine 1 at a location upstream in flow direction of the liquid from the flow-controlled check valve 4.
  • the flow switch 5 comprises an expansion tube 50 of substantially resilient material. The ends of the expansion tube 50 are sealingly clamped between hose nipples 55, 56 and a casing 58 of the switch 5.
  • the expansion tube 50 forms part of the flow passage of the water to be discharged, and its inner surface is exposed to direct contact with the flow of water.
  • a switch plunger 54 capable of actuating an electric contact 53 in the electric circuit of a solenoid 52 of a multiple contact relay 51 is directed radially against a wall portion of the expansion tube 50.
  • the switch plunger 54 has a push button-like head portion that is arranged in an adjustable distance from the wall portion of the expansion tube 50. The radial distance between the button-like free end of the switch plunger 54 and the wall portion of the expansion tube is responsible for the working point of the electric contact, i.e. for the threshold value of the pressure at which an electric output signal of the flow switch 5 is generated.
  • the radial distance and thus, the working point of the flow switch 5 can be adjusted to any desired pressure value by means of an adjusting screw 57.
  • Increase of liquid pressure in the discharge pipe 10 results in an elastic radial deformation of the wall portion facing the switch plunger 54, and from a certain, pre-determined degree of such a deformation on the switch plunger 54 will be displaced radially whereby the electric contact 53 is closed, and the electric relay 51 is activated.
  • the output signal of the electric relay is transmitted to the programme control unit of the washing machine 1. It will be readily understood that other types and designs of a flow switch can equally be used in different embodiments of the device of the present invention.
  • preferred embodiments of the device comprise, at least as an option, a further flow-controlled valve 6 by the use of which losses of liquid and damage caused by overflow and flooding can be avoided with improved efficiency.
  • a flow-controlled valve 6 is shown, again by way of example only, in Figs. 6 and 7 of the attached drawing.
  • Fig. 6 illustrates the flow-controlled valve 6 in its normal, open state of operation while in Fig. 7 valve 6 is shown in its closed state.
  • the flow-controlled valve 6 comprises a valve seat 61 and a valve ball 63.
  • the specific density of the valve ball 63 is substantially lower than that of the liquid flowing through the valve 6.
  • the valve seat 61 is arranged, in the normal mounting position of the valve 6 when the liquid is flown through the valve 6 in substantially vertical downward direction, adjacent to the lower liquid output port of the valve 6.
  • the valve ball 63 is arranged slidably and in a guided manner between guide ribs 64 in a space portion 62 of the valve body 60 above the valve seat 61.
  • the valve body 60 comprises between the guide ribs 64 flow passages 65 allowing the free flow of liquid along and around the valve ball 63 when in the normal operational position of the valve 6 the valve ball 63 is staying in a position clearly distanced from the valve seat 61 as shown in Fig 6.
  • the valve body 60 For initial filling up and eliminating air from the inlet pipe and the valve 6, the valve body 60 comprises a bore 69a that is by-passing, via a closure member 68a, the valve seat 61 of the valve 6, and a further bore 69b through which the inner space portion 62 of the valve 6 can be connected, via a second closure member 68b, to the surrounding atmosphere.
  • valve ball 63 are dimensioned and selected so that in such a normal operational position of the valve 6 as shown in Fig. 6, the impact pressure of the flow of the mains water is not sufficient for pushing and pressing the valve ball 63 against the valve seat 61 so that it stays in its floating position clearly distanced from the latter. Thus, a free flow of water through the valve 6 along and around the valve ball 63 in downward vertical direction is allowed.
  • valve body 63 i.e. a closing member of spherical shape
  • closing members of different, e.g. piston-like design can equally be used.
  • the valve body may also be designed and shaped e.g. as a double-wall valve casing in which, in the open thoroughfare state of the valve, the mains water is allowed to downward flow along a flow passage in the space portion between concentric walls of the valve casing.
  • the use of the device according to the invention in systems and installations mentioned and referred to in the present description and the appended claims provides a practically full protection against liquid losses and damage that may otherwise arise from lack of care and attendance, from occasional misplacement or incorrect installation.
  • the device is very simple, its operation is safe and entirely automatic.
  • Devices of the invention as well as their particular functional units can be used in a broad field of applications.
  • the device according to the present invention can be beneficially used e.g. in the wine industry and in other fields of technology.
  • the output of the relay of the flow switch may, in addition to what has already been indicated further above, generate a lasting visible and/or acoustic signal indicating to the attendant or operator that a failure has occurred.
  • washing machine 1 discharge pipe 10 end portion 11 inlet pipe 12 water tap 2 bath tub 3 check valve 4 vab e body 40 valve ball 41 space portion 42 valve seat 43 rubber ring 44 guide rib 45 hose nipple 46, 47 flow passage 48 flow switch 5 expansion tube 50 relay 51 solenoid 52 electric contact 53 switch plunger 54 hose nipple 55, 56 adjusting screw 57 casing 58 valve 6 valve body 60 valve seat 61 space portion 62 valve ball 63 guide rib 64 flow passage 65 pipe connector 66, 67 closure member 68a, 68b bore 69a, 69b

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)

Abstract

L'invention concerne un dispositif destiné à prévenir toute fuite de liquide par le conduit d'évacuation (10) sensiblement souple d'un système ou d'une installation alimentés en liquide sous pression, ou contenant au moins par intermittence du liquide sous pression. Le dispositif de cette invention comprend au moins une soupape de régulation de débit, qui peut être insérée à l'intérieur de la partie tuyau souple dudit conduit d'évacuation (10), ou reliée à celle-ci, en aval par rapport au sens d'écoulement dudit liquide. Cette soupape se présente sous la forme d'un clapet de non-retour (4), qui permet au liquide de s'écouler librement à travers ce clapet dans une direction sensiblement verticale. Ce dispositif comprend également un commutateur de débit (5) capable de convertir la pression du fluide en un signal électrique, ce commutateur de débit (5) étant monté dans ledit conduit d'évacuation (10) du système ou de l'installation en un point situé en amont par rapport au sens d'écoulement du liquide depuis le clapet de non-retour (4). Si l'on utilise ce dispositif dans un système ou une installation présentant un conduit d'arrivée (12) conçu pour introduire, au moins par intermittence, du liquide sous pression, ce dispositif peut éventuellement être pourvu d'une autre soupape de régulation de pression (6), capable de bloquer l'écoulement de liquide si la valeur de seuil prédéfinie de la vitesse d'écoulement de ce liquide est atteinte ou dépassée.
PCT/HU1999/000010 1998-02-05 1999-02-04 Dispositif pour prevenir toute fuite de liquide WO1999040351A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU24358/99A AU2435899A (en) 1998-02-05 1999-02-04 Device for preventing undesired release of liquid
HU0100877A HUP0100877A3 (en) 1998-02-05 1999-02-04 Device for preventing undesired release of liquid

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU9800248A HUP9800248A1 (hu) 1998-02-05 1998-02-05 Bereznai System féle csőzár-automata
HUP9800248 1998-02-05

Publications (1)

Publication Number Publication Date
WO1999040351A1 true WO1999040351A1 (fr) 1999-08-12

Family

ID=89996080

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/HU1999/000010 WO1999040351A1 (fr) 1998-02-05 1999-02-04 Dispositif pour prevenir toute fuite de liquide

Country Status (3)

Country Link
AU (1) AU2435899A (fr)
HU (1) HUP9800248A1 (fr)
WO (1) WO1999040351A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003067053A3 (fr) * 2002-02-07 2003-10-16 Honeywell Int Inc Systeme de demarrage de turbine a air avec regulation de debit fluidique
US10794049B2 (en) 2018-01-24 2020-10-06 ENASI Industries Inc. Fluid management/control system

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2185098A (en) * 1938-01-03 1939-12-26 Electric Storage Battery Co Nonspill vent plug
FR1252662A (fr) * 1959-12-05 1961-02-03 Perfectionnements aux robinets de coupure
US3949786A (en) * 1973-12-26 1976-04-13 Houston William T Automatic combination check valve
US4269213A (en) * 1978-08-08 1981-05-26 Nissan Motor Company, Limited Safety valve
US5081328A (en) 1990-01-05 1992-01-14 Itt Corporation Flow switch
US5089674A (en) 1990-04-25 1992-02-18 Microtel Pacific Research Limited Hydrostatic pressure sensor
WO1993003301A1 (fr) * 1991-08-06 1993-02-18 Gaslow International Limited Vanne de limitation de debit
US5195552A (en) 1990-12-08 1993-03-23 Dieter Wildfang Gmbh Check valve with exchangeable valving elements
US5232014A (en) 1991-03-18 1993-08-03 Georg Fischer Ag Check valve
EP0559131A1 (fr) 1992-03-06 1993-09-08 TECNO PLASTIC S.r.l. Soupape de retenue à plusieurs fonctions
US5450765A (en) 1994-03-01 1995-09-19 Tdw Delaware, Inc. Apparatus for providing signal communication between the interior and exterior of a pipeline

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2185098A (en) * 1938-01-03 1939-12-26 Electric Storage Battery Co Nonspill vent plug
FR1252662A (fr) * 1959-12-05 1961-02-03 Perfectionnements aux robinets de coupure
US3949786A (en) * 1973-12-26 1976-04-13 Houston William T Automatic combination check valve
US4269213A (en) * 1978-08-08 1981-05-26 Nissan Motor Company, Limited Safety valve
US5081328A (en) 1990-01-05 1992-01-14 Itt Corporation Flow switch
US5089674A (en) 1990-04-25 1992-02-18 Microtel Pacific Research Limited Hydrostatic pressure sensor
US5195552A (en) 1990-12-08 1993-03-23 Dieter Wildfang Gmbh Check valve with exchangeable valving elements
US5232014A (en) 1991-03-18 1993-08-03 Georg Fischer Ag Check valve
WO1993003301A1 (fr) * 1991-08-06 1993-02-18 Gaslow International Limited Vanne de limitation de debit
EP0559131A1 (fr) 1992-03-06 1993-09-08 TECNO PLASTIC S.r.l. Soupape de retenue à plusieurs fonctions
US5450765A (en) 1994-03-01 1995-09-19 Tdw Delaware, Inc. Apparatus for providing signal communication between the interior and exterior of a pipeline

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003067053A3 (fr) * 2002-02-07 2003-10-16 Honeywell Int Inc Systeme de demarrage de turbine a air avec regulation de debit fluidique
US6681579B2 (en) 2002-02-07 2004-01-27 Honeywell International, Inc. Air turbine starter with fluid flow control
US10794049B2 (en) 2018-01-24 2020-10-06 ENASI Industries Inc. Fluid management/control system

Also Published As

Publication number Publication date
HUP9800248A1 (hu) 1999-12-28
HU9800248D0 (en) 1998-03-30
AU2435899A (en) 1999-08-23

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