EP3495572B1 - Dispositif d'alimentation d'un réservoir de chasse d'eau - Google Patents

Dispositif d'alimentation d'un réservoir de chasse d'eau Download PDF

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Publication number
EP3495572B1
EP3495572B1 EP18210169.1A EP18210169A EP3495572B1 EP 3495572 B1 EP3495572 B1 EP 3495572B1 EP 18210169 A EP18210169 A EP 18210169A EP 3495572 B1 EP3495572 B1 EP 3495572B1
Authority
EP
European Patent Office
Prior art keywords
outlet
feeding device
water
outlet tube
air vent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18210169.1A
Other languages
German (de)
English (en)
Other versions
EP3495572A1 (fr
Inventor
Bruno DOS SANTOS PEREIRA
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.)
Oli Sistemas Sanitarios SA
Original Assignee
Oli Sistemas Sanitarios SA
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Publication date
Application filed by Oli Sistemas Sanitarios SA filed Critical Oli Sistemas Sanitarios SA
Publication of EP3495572A1 publication Critical patent/EP3495572A1/fr
Application granted granted Critical
Publication of EP3495572B1 publication Critical patent/EP3495572B1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D1/00—Water flushing devices with cisterns ; Setting up a range of flushing devices or water-closets; Combinations of several flushing devices
    • E03D1/30—Valves for high or low level cisterns; Their arrangement ; Flushing mechanisms in the cistern, optionally with provisions for a pre-or a post- flushing and for cutting off the flushing mechanism in case of leakage
    • E03D1/32—Arrangement of inlet valves

Definitions

  • the present invention relates to a feeding device for a flush tank of a sanitary appliance.
  • a flush tank of a sanitary appliance in addition to a discharge valve, is also generally provided with a feeding device connected to the water supply network for the filling of the tank after the water has been discharged into the sanitary appliance.
  • a commonly used feeding device comprises, in general terms, an inlet tube having a fitting for connection to the water supply network, a valve assembly housed in a casing and controlled by a float, an outlet tube that lets the water that has flowed through the valve assembly into the tank.
  • the valve assembly in particular, may be of the so-called back pressure or diaphragm closing type, in which the float operates a cut-off acting on a vent nozzle of a back pressure chamber delimited by a diaphragm or membrane; the diaphragm separates two conduits from each other, connected to the inlet tube and the outlet tube, respectively.
  • the float as a result of the discharge of water from the tank, falls, it opens the vent nozzle, and the diaphragm elastically deforms under the water pressure and puts the conduits into communication with each other, thus allowing the passage of water and the filling of the tank.
  • the float rises, it closes the vent nozzle, and the pressure in the back pressure chamber balances that of the incoming water and causes the diaphragm to separate the conduits again, stopping the water from entering the tank.
  • valve assembly In order to avoid backflow into the water supply network in the event of malfunctions, the valve assembly must be provided (as also provided for by specific rules and regulations) with an air outlet opening, communicating with the outside of the feeding device to allow the exit of air from the feeding device and therefore avoid any suction of water from the tank.
  • the presence of the air outlet opening causes, during normal operation of the feeding device, the formation of a water/air mixture in the feeding device. Entry of air into the water flow circulating in the feeding device can cause turbulent motion phenomena with consequent increase in noise during the filling of the tank.
  • EP3147416A1 The problem highlighted here is solved by EP3147416A1 , by means of a feeding device having an air vent communicating with a flooding chamber, which in use, during the filling of the tank, fills with water thereby closing the air vent.
  • This feeding device is effectively capable of preventing phenomena of water backflow into the water supply network, while avoiding the problems related to entry of air into the water flow circulating in the feeding device, in particular reducing the noise during the filling of the tank.
  • the device referred to herein like other known ones such as EP1371787A2 , which also includes an upper air vent, although efficient still have room for improvement, in particular in terms of simplicity of construction and operation, noise reduction capability and ability to operate at different pressures of the water supply network (in particular, even at a relatively low pressure).
  • the present invention relates to a feeding device for a flush tank, as defined essentially in the appended claim 1 and, in its additional features, in the dependent claims.
  • the air vent is located at a higher level (i.e. higher) than the prior art solutions, resulting in a more advantageous operation.
  • the feeding device in accordance with the invention not only meets the criteria laid down by the non-return rules, by being effectively capable of preventing phenomena of water backflow into the water supply network, but at the same time avoids the problems related to entry of air into the water flow circulating in the feeding device, and particularly reduces the noise during the filling of the tank, being extremely simple to manufacture and simple and reliable in its operation, always operating effectively even at different pressure levels of the supply network (and in particular even at relatively low pressure).
  • the numeral 1 indicates, as a whole, a feeding device, in particular with bottom feed, for a flush tank (known and not shown for simplicity) of a sanitary appliance.
  • the feeding device 1 comprises an internally hollow body 2, a valve assembly 3 housed inside the body 2 and controlled by a float 4 (for example movably housed in a service container 4A), an inlet tube 5 arranged upstream of the valve assembly 3 and connectable to a water supply network to carry a flow of water to the valve assembly 3, and an outlet tube 6 arranged downstream of the valve assembly 3 and through which the water flowing through the valve assembly 3 is fed into the tank.
  • a float 4 for example movably housed in a service container 4A
  • an inlet tube 5 arranged upstream of the valve assembly 3 and connectable to a water supply network to carry a flow of water to the valve assembly 3
  • an outlet tube 6 arranged downstream of the valve assembly 3 and through which the water flowing through the valve assembly 3 is fed into the tank.
  • the valve assembly 3 is a back pressure valve assembly substantially known per se.
  • the valve assembly 3 comprises an inlet conduit 7 connected to the inlet tube 5; an outlet conduit 8 connected to the outlet tube 6; an internal connecting passage 9 connecting the inlet conduit 7 to the outlet conduit 8; an elastically deformable or movable, discoidal diaphragm 10 selectively closing the passage 9; and a back pressure chamber 11 delimited by the diaphragm 10 and provided with a vent nozzle 12, which connects the back pressure chamber 11 to the outside of the body 2 and is closed by a movable cut-off 13 actuated by the float 4.
  • the diaphragm 10 keeps the passage 9 closed because the water pressure in the inlet conduit 7 is counterbalanced by the pressure inside the back pressure chamber 11, and the water in the inlet conduit 7 is unable to deform or move the diaphragm 10.
  • the nozzle 12 When the nozzle 12 opens, following a downward movement of the float 4 as a result of a lowering of the water level in the tank (i.e. when the water is discharged from the tank), the water pressure in the inlet conduit 7 exceeds the pressure in the back pressure chamber 11 and the diaphragm 10 elastically deforms or moves, thus opening the passage 9 and allowing the water to flow from the inlet conduit 7 to the outlet conduit 8 and from here, through the outlet tube 6, into the tank.
  • the float 4 is axially slidably mounted on a guide element 15 located outside the inlet tube 5 and is mechanically connected, for example by means of a linkage 16, to the cut-off 13 cooperating with the nozzle 12 for controlling the operation of the valve assembly 3.
  • the inlet tube 5 and the outlet tube 6 are substantially rectilinear and parallel, and substantially vertical in use, both extending from the body 2 downwards along respective axes A, B, which are longitudinal, parallel, and vertical in use.
  • the inlet tube 5 can extend laterally from the body 2, rather than downwards.
  • the outlet tube 6 is preferably vertical, as shown.
  • the inlet tube 5 is provided with an end fitting 17 for connection to an external tubing, and fastening members 18 for mechanically fastening the feeding device 1 to the tank.
  • the outlet tube 6 is flanked by the inlet tube 5 and carries the guide element 15 for the float 4 and ends with a water outlet 19 located at a lower free end 20 of the outlet tube 6.
  • the feeding device 1 comprises an internal flooding chamber 22 arranged in the body 2 at an upper end 23 of the feeding device 1, i.e. of the body 2; and an air vent 24 formed in the body 2 and communicating with the outside of the body 2 and with the outlet conduit 8, and therefore also with the outlet tube 6.
  • the chamber 22 communicates with the outside of the body 2 through the air vent 24, which is formed at the upper end 23 of the body 2 and is substantially transverse to the axes A, B, and facing upwards.
  • the air vent 24 is defined by an opening 25 formed through an upper wall 26 of the body 2.
  • the wall 26 is substantially transverse (for example, substantially perpendicular) to the axes A, B, and is provided with a peripheral edge 28, which also encloses the opening 25 defining the air vent 24.
  • the edge 28 extends vertically from the wall 26 and delimits an upper secondary chamber 29 located above the chamber 22 and shaped like a tank open at the top.
  • the edge 28 is partially closed by a wall portion 30 located higher than the wall 26 and optionally provided with a drain 31 defined by a recess.
  • the wall 26 separates the chamber 22, delimited at the top by the wall 26, from the secondary chamber 29 located above the chamber 22.
  • the chamber 22 communicates with the outlet conduit 8 and/or the outlet tube 6, optionally via a bypass channel 32 connected to the outlet conduit 8 or directly to the outlet tube 6.
  • the chamber 22 has an auxiliary outlet 33, opposite the air vent 24 and substantially transverse to the axes A, B, and facing downwards.
  • the auxiliary outlet 33 is formed in a lower wall 34 of the body 2 at an axial height (along an axis A, B), between the air vent 24 and the water outlet 19. In the example shown, the auxiliary outlet 33 is located in a position adjacent to the inlet tube 5.
  • the outlet tube 6 has a narrowing 35, defined, for example, by a reduction in the section of the outlet tube 6.
  • the narrowing 35 is located inside the outlet tube 6 at the lower free end 20 of the outlet tube 6, before the water outlet 19 (i.e. upstream of the water outlet 19 in the direction of flow of the water that, in use, runs through the outlet tube 6 to fill the tank) and advantageously in the proximity of the water outlet 19.
  • the narrowing 35 is defined by a tapered portion 36 of the outlet tube 6, converging toward the end 20 and the water outlet 19.
  • the water outlet 19 is positioned radially with respect to the outlet tube 6 (and therefore to the axis B of the outlet tube 6), being formed through a lateral wall 37 of the outlet tube 6.
  • the outlet tube 6 has a bottom baffle 38, located at the end 20 and axially closing the end 20; the baffle 38 is substantially transverse to the axis B and preferably slanted with respect to the axis B; the water outlet 19 is defined by one or more radial slits 39 (in the example shown, by two symmetrical slits 39 diametrically opposite with respect to the axis B) formed through the lateral wall 37 above the baffle 38.
  • the float 4 opens the nozzle 12 and the mains water pressure in the inlet conduit 7 deforms the diaphragm 10, opening the passage 9; the water then flows from the inlet conduit 7 into the outlet conduit 8, flowing into the outlet tube 6 and filling the tank.
  • the water fills the outlet tube 6 and also rises into the chamber 22.
  • the narrowing 35 is shaped so as to cause the filling of the outlet tube 6 and the chamber 22 with water until the air vent 24 is closed with a water zone.
  • the water floods (completely filling) the chamber 22 up to the wall 26 and closes the air vent 24 with a water zone.
  • the water partly exits through the auxiliary opening 33, but in any case keeps the air vent 24 closed.
  • the float 4 closes the nozzle 12, thus stopping the flow of water.
  • the water flows out of the chamber 22 through the auxiliary opening 33.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Float Valves (AREA)
  • Sanitary Device For Flush Toilet (AREA)

Claims (11)

  1. Dispositif d'alimentation (1) pour un réservoir de chasse d'eau, comprenant un corps creux intérieurement (2); un ensemble de soupape (3) logé à l'intérieur du corps (2) et disposé entre un conduit d'entrée (7) et un conduit de sortie (8) pour ouvrir / fermer sélectivement un passage (9) entre le conduit d'entrée (7) et le conduit de sortie (8); un évent (24) formé dans le corps (2) et communiquant avec l'extérieur du corps (2) et avec le conduit de sortie (8); et une chambre d'inondation (22), positionnée dans le corps (2) et communiquant avec l'évent (24) et avec le conduit de sortie (8); le conduit de sortie (8) étant relié à un tube de sortie (6) qui s'étend le long d'un axe longitudinal (B), sensiblement vertical lors de l'utilisation, et est pourvu d'une sortie d'eau (19), positionnée à une extrémité libre inférieure (20) du tube de sortie (6) pour déverser, lors de l'utilisation, de l'eau dans le réservoir; l'évent (24) étant défini par une ouverture (25) formée à travers une paroi supérieure (26) du corps (2) à une extrémité supérieure (23) du corps (2) et le dispositif d'alimentation (1), et tourné vers le haut lors de l'utilisation; dans lequel
    le tube de sortie (6) présente un
    rétrécissement (35), positionné à l'extrémité libre inférieure (20) du tube de sortie (6) et formé de manière à provoquer le remplissage du tube de sortie (6) et de la chambre (22) avec de l'eau jusqu'à ce que l'évent (24) soit fermé avec une zone d'eau.
  2. Dispositif d'alimentation selon la revendication 1, dans lequel le rétrécissement (35) est positionné à proximité de la sortie d'eau (19).
  3. Dispositif d'alimentation selon l'une des revendications 1 ou 2, dans lequel le rétrécissement (35) est défini par une partie fuselée (36) du tube de sortie (6), convergeant vers l'extrémité libre inférieure (20) du tube de sortie (6) et de la sortie d'eau (19).
  4. Dispositif d'alimentation selon l'une des revendications précédentes, dans lequel la sortie d'eau (19) est positionnée radialement par rapport au tube de sortie (6) et à l'axe (B) du tube de sortie (6), étant formée à travers une paroi latérale (37) du tube de sortie (6).
  5. Dispositif d'alimentation selon la revendication 4, dans lequel le tube de sortie (6) présente une chicane inférieure (38), positionnée à l'extrémité libre inférieure (20) du tube de sortie (6) et sensiblement transversale à l'axe (B) et fermant axialement l'extrémité libre inférieure (20) ; et la sortie d'eau (19) est définie par une ou plusieurs fentes radiales (39) formées à travers la paroi latérale (37) au-dessus de la chicane (38).
  6. Dispositif d'alimentation selon la revendication 5, dans lequel la chicane (38) est inclinée par rapport à l'axe (B).
  7. Dispositif d'alimentation selon l'une des revendications précédentes, comprenant une chambre secondaire (29), positionnée au-dessus de la chambre d'inondation (22) et communiquant avec la chambre d'inondation (22) à travers l'évent (24) et formé de manière à recevoir l'eau sortant de la chambre d'inondation (22) à travers l'évent (24).
  8. Dispositif d'alimentation selon la revendication 7, dans lequel la paroi supérieure (26) sépare la chambre d'inondation (22), délimitée en haut par la paroi supérieure (26), de la chambre secondaire (29).
  9. Dispositif d'alimentation selon l'une des revendications 7 ou 8, dans lequel la chambre secondaire (29) a la forme d'un réservoir ouvert en haut, délimité par un bord périphérique (28).
  10. Dispositif d'alimentation selon la revendication 9, dans lequel, au-dessus de l'évent (24), le bord périphérique (28) est partiellement fermé par une portion de paroi (30) située plus haut que la paroi supérieure (26) et éventuellement pourvue d'un drain (31) défini par un renfoncement.
  11. Dispositif d'alimentation selon l'une des revendications précédentes, dans lequel la chambre d'inondation (22) a une sortie auxiliaire (33), opposée à l'évent (24) et sensiblement transversale à l'axe (B) et tournée vers le bas ; la sortie auxiliaire (33) étant formée dans une paroi inférieure (34) du corps (2) à une hauteur axiale entre l'évent (24) et la sortie d'eau (19).
EP18210169.1A 2017-12-06 2018-12-04 Dispositif d'alimentation d'un réservoir de chasse d'eau Active EP3495572B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT201700141217 2017-12-06

Publications (2)

Publication Number Publication Date
EP3495572A1 EP3495572A1 (fr) 2019-06-12
EP3495572B1 true EP3495572B1 (fr) 2020-07-08

Family

ID=61656188

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18210169.1A Active EP3495572B1 (fr) 2017-12-06 2018-12-04 Dispositif d'alimentation d'un réservoir de chasse d'eau

Country Status (3)

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EP (1) EP3495572B1 (fr)
ES (1) ES2818616T3 (fr)
RU (1) RU2018142906A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN216108823U (zh) * 2021-04-30 2022-03-22 厦门瑞尔特卫浴科技股份有限公司 一种防虹吸组件、排水装置及马桶装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6755209B2 (en) 2002-06-13 2004-06-29 Geberit Technik Ag Fill valve assembly for a flush tank
ITUB20153781A1 (it) 2015-09-22 2017-03-22 Oliveira & Irmao Sa Dispositivo di alimentazione per una cassetta di risciacquo

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
EP3495572A1 (fr) 2019-06-12
RU2018142906A (ru) 2020-06-05
RU2018142906A3 (fr) 2022-02-22
ES2818616T3 (es) 2021-04-13

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