EP2468968B1 - Flushing device for a toilet - Google Patents

Flushing device for a toilet Download PDF

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Publication number
EP2468968B1
EP2468968B1 EP11193031.9A EP11193031A EP2468968B1 EP 2468968 B1 EP2468968 B1 EP 2468968B1 EP 11193031 A EP11193031 A EP 11193031A EP 2468968 B1 EP2468968 B1 EP 2468968B1
Authority
EP
European Patent Office
Prior art keywords
water
deposit
tank
toilet
valve
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.)
Not-in-force
Application number
EP11193031.9A
Other languages
German (de)
French (fr)
Other versions
EP2468968A1 (en
Inventor
Miguel Angel Munar Saura
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.)
Roca Sanitario SA
Original Assignee
Roca Sanitario SA
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 Roca Sanitario SA filed Critical Roca Sanitario SA
Publication of EP2468968A1 publication Critical patent/EP2468968A1/en
Application granted granted Critical
Publication of EP2468968B1 publication Critical patent/EP2468968B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D3/00—Flushing devices operated by pressure of the water supply system flushing valves not connected to the water-supply main, also if air is blown in the water seal for a quick flushing
    • E03D3/10—Flushing devices with pressure-operated reservoir, e.g. air chamber
    • 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 refers to a toilet security device that prevents the water from the toilet deposit to return to the mains if a pressure drop is produced in the water feeding.
  • the toilets comprise a water deposit where the water that is used to be flushed to the toilet bowl is stored, so that the wastes inside the bowl are sent to the drainage system.
  • the water inside the toilet deposit has a classification according to the regulations, and the water inside the toilet bowl has a different classification, according to the same regulations, and it is necessary to prevent these waters to return to the water mains in case of a breakdown for sanitary reasons.
  • the holder of the present application is currently working on the design of a toilet whose deposit is placed at a lower level than the rim of the toilet bowl, and it directs the water from said deposit to the bowl introducing pressurized air inside said deposit, so that the object of the present invention is a security device permitting the toilet to fulfill the current regulations.
  • Patent DE 941900 refers to a flush toilet according to the preamble of claim 1.
  • Patent US 4,345,619 A refers to a backflow preventer at a fill valve inlet including an upstream disc member, a downstream cup member and a unitary elastic body having an outer ring portion and two inwardly extending check valve portions cooperating with flow passages in the disc and cup members.
  • Patent US 3,603,336 A refers to a fluidically controlled refill mechanism with backflow preventer, including a fluidically controlled valve which maintains itself in the “on” position once the fluid flow starts and switches to the “off” position in response to the attainment of a predetermined liquid level.
  • the flowing fluid in the control chamber of the mechanism acts as a wall or air barrier. When the fluid flow stops, the barrier is eliminated leaving a substantial distance between the maximum water height and the lowest "siphon" inlet to the valve, thereby preventing accidental backflow of water from the tank into the main waterline.
  • the toilet security device of the present invention serves to prevent the water inside a toilet flushing deposit to return to the water mains.
  • the valve can be mechanical or electric.
  • the flushing means are a compressor, even though it could be any suitable flushing means.
  • the water inlet is placed at a height higher than a critical water level, said critical water level being above an overflow opening of said tank.
  • said valve comprises a ball that closes the water communication between said tank and said deposit when the flushing means is operated.
  • the toilet security device of the present invention ensures that the water inside the toilet tank is prevented to return to the water mains in the case of a pressure drop in the water mains, because before this happens, the water will overflow over the upper part of the toilet bowl.
  • Fig. 1 is a diagrammatical elevation view of the toilet security device of the present invention applied in a toilet.
  • the security device of the present invention is applied in a toilet, which comprises a bowl 1 and a deposit 2, which stores the water that will be flushed to the bowl 1 by flushing means 3, e.g. a compressor or any suitable flushing means.
  • flushing means e.g. a compressor or any suitable flushing means.
  • This deposit 2 can be placed at the same height or below said toilet bowl 1, behind it, around it or even fitted in a wall.
  • a water nominal level is defined, indicated by letter N, corresponding to the water level during the normal operation of the toilet.
  • the security device comprises a tank 4 placed inside said deposit 2, as shown in Fig. 1 , o above said deposit 2. It is important to place the bottom of said tank 4 at a higher lever than the bottom of said deposit 2. Said tank 4 is communicated with the deposit 2 by a valve 5.
  • Said valve 5 can be any suitable valve, e.g. a mechanical valve or an electric valve.
  • said valve 5 comprises a ball that closes the water communication between said tank 4 and said deposit 2 when the flushing means 3 is operated.
  • valve 5 When the toilet is not flushing, the valve 5 allows the water to flow between the deposit 2 and the tank 4, so that the water level inside the tank 4 and inside the deposit 2 will be the same.
  • Said valve 5 is associated with said flushing means 3 so that when said flushing means 3 are on operation, the valve 5 is closed, not permitting the passage of water from the deposit 2 to the tank 4.
  • the toilet also comprises a water level detector 6 that is placed inside said tank 4.
  • This water level detector 6 is e.g. a buoy vertically movable along a guide 7, even though it could be any suitable level detector.
  • a critical level is defined, indicated in Fig. 1 by letter C, so that the water from the tank 4 could not reach the water mains because the water inlet 8 is always at a level (the inlet level I indicated in Fig. 1 ) higher than this level C.
  • overflow opening 9 is always at a level lower than the critical level, so that there is no possibility for the water to return the water mains, as it is required by the regulations.
  • the security device of the present invention it is possible to meet the regulations for toilets independently from the position of the water deposit 4 of the toilet, even if this deposit 4 is placed at the same level or below the toilet bowl 1.

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)
  • Sanitary Device For Flush Toilet (AREA)

Description

  • The present invention refers to a toilet security device that prevents the water from the toilet deposit to return to the mains if a pressure drop is produced in the water feeding.
    • BACKGROUND OF THE INVENTION
  • The toilets comprise a water deposit where the water that is used to be flushed to the toilet bowl is stored, so that the wastes inside the bowl are sent to the drainage system.
  • The water inside the toilet deposit has a classification according to the regulations, and the water inside the toilet bowl has a different classification, according to the same regulations, and it is necessary to prevent these waters to return to the water mains in case of a breakdown for sanitary reasons.
  • This requirement is relatively easy to fulfill currently, because the conventional toilet deposits are placed above the upper part or rim of the toilet bowl, so that in the case of a breakdown, the water would fall by gravity to the toilet bowl and it would overflow by the toilet bowl.
  • However, if the toilet deposit is placed below the toilet bowl, it is necessary to provide a security device to prevent the return, in any circumstances, of the water inside the toilet deposit to the water mains.
  • The holder of the present application is currently working on the design of a toilet whose deposit is placed at a lower level than the rim of the toilet bowl, and it directs the water from said deposit to the bowl introducing pressurized air inside said deposit, so that the object of the present invention is a security device permitting the toilet to fulfill the current regulations.
  • Patent DE 941900 refers to a flush toilet according to the preamble of claim 1.
  • Patent US 4,345,619 A refers to a backflow preventer at a fill valve inlet including an upstream disc member, a downstream cup member and a unitary elastic body having an outer ring portion and two inwardly extending check valve portions cooperating with flow passages in the disc and cup members.
  • Patent US 3,603,336 A refers to a fluidically controlled refill mechanism with backflow preventer, including a fluidically controlled valve which maintains itself in the "on" position once the fluid flow starts and switches to the "off" position in response to the attainment of a predetermined liquid level. The flowing fluid in the control chamber of the mechanism, acts as a wall or air barrier. When the fluid flow stops, the barrier is eliminated leaving a substantial distance between the maximum water height and the lowest "siphon" inlet to the valve, thereby preventing accidental backflow of water from the tank into the main waterline.
    • DESCRIPTION OF THE INVENTION
  • With the toilet security device of the present invention said drawbacks can be solved, presenting other advantages that will be described.
  • The toilet security device of the present invention as stated in appended claim 1 serves to prevent the water inside a toilet flushing deposit to return to the water mains. Advantageously, the valve can be mechanical or electric.
  • According to a preferred embodiment, the flushing means are a compressor, even though it could be any suitable flushing means.
  • The water inlet is placed at a height higher than a critical water level, said critical water level being above an overflow opening of said tank.
  • According to a preferred embodiment, said valve comprises a ball that closes the water communication between said tank and said deposit when the flushing means is operated.
  • Thanks to the toilet security device of the present invention, the water inside the toilet tank is prevented to return to the water mains in the case of a pressure drop in the water mains, because before this happens, the water will overflow over the upper part of the toilet bowl.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • For a better understanding of what has been described, some drawings are attached in which, diagrammatically and only as a non-limitative example, one embodiment is shown.
  • Fig. 1 is a diagrammatical elevation view of the toilet security device of the present invention applied in a toilet.
    • DESCRIPTION OF A PREFERRED EMBODIMENT
  • As shown in Fig. 1, the security device of the present invention is applied in a toilet, which comprises a bowl 1 and a deposit 2, which stores the water that will be flushed to the bowl 1 by flushing means 3, e.g. a compressor or any suitable flushing means.
  • This deposit 2 can be placed at the same height or below said toilet bowl 1, behind it, around it or even fitted in a wall.
  • Inside the deposit 2 a water nominal level is defined, indicated by letter N, corresponding to the water level during the normal operation of the toilet.
  • According to the invention, the security device comprises a tank 4 placed inside said deposit 2, as shown in Fig. 1, o above said deposit 2. It is important to place the bottom of said tank 4 at a higher lever than the bottom of said deposit 2. Said tank 4 is communicated with the deposit 2 by a valve 5.
  • Said valve 5 can be any suitable valve, e.g. a mechanical valve or an electric valve. In a preferred embodiment, said valve 5 comprises a ball that closes the water communication between said tank 4 and said deposit 2 when the flushing means 3 is operated.
  • When the toilet is not flushing, the valve 5 allows the water to flow between the deposit 2 and the tank 4, so that the water level inside the tank 4 and inside the deposit 2 will be the same.
  • Said valve 5 is associated with said flushing means 3 so that when said flushing means 3 are on operation, the valve 5 is closed, not permitting the passage of water from the deposit 2 to the tank 4.
  • The toilet also comprises a water level detector 6 that is placed inside said tank 4. This water level detector 6 is e.g. a buoy vertically movable along a guide 7, even though it could be any suitable level detector.
  • According to the regulations applicable to toilet fill valves, a critical level is defined, indicated in Fig. 1 by letter C, so that the water from the tank 4 could not reach the water mains because the water inlet 8 is always at a level (the inlet level I indicated in Fig. 1) higher than this level C.
  • If the water is accumulated in excess inside the deposit 2, this water will never return again to the water inlet 8 from the mains, but it will be directed in the toilet bowl 1, through which it could overflow, if it would be the case.
  • In the case of the tank 4, if water in excess is accumulated inside it, it will overflow through an overflow opening or open part 9 in said tank 4. Said overflow opening 9 is always at a level lower than the critical level, so that there is no possibility for the water to return the water mains, as it is required by the regulations.
  • Therefore, with the security device of the present invention it is possible to meet the regulations for toilets independently from the position of the water deposit 4 of the toilet, even if this deposit 4 is placed at the same level or below the toilet bowl 1.
  • Even though reference is made to a specific embodiment of the invention, it is apparent for a person skilled in the art that the described toilet security device is susceptible of variations and modifications, and that all the details cited can be substituted by other technically equivalent ones, without departing from the scope of protection defined by the attached claims.

Claims (4)

  1. A toilet security device for preventing water to return to the water mains, the device comprising:
    - a flush water deposit (2)
    - flushing means (3) suitable for directing the water from the deposit (2) to a toilet bowl (1), said deposit (2) storing the water to be flushed to the toilet bowl (1) by the flushing means (3),
    - a water inlet (8) from the mains, comprising a water inlet valve which controls the inflow of water from the water mains such that the water level in the deposit (2) does not exceed a water nominal level (N) inside the deposit (2) of the toilet,
    characterized in that the divice comprises a tank (4) housed inside or placed above said deposit (2), said tank (4) being provided with a valve (5) to permit the water communication between said tank (4) and said deposit (2) to be opened or closed, said valve (5) being associated with the flushing means (3), so that when said flushing means (3) are operated, the valve (5) closes the communication between said tank (4) and said deposit (2), and in that said water inlet (8) is placed at a height higher than a critical water level (C), said critical water level (C) being above an overflow opening (9) of said tank (4) to prevent the water from the tank (4) to reach the water mains when the communication between the tank (4) and the deposit (2) is opened.
  2. Security device for toilets according to claim 1, wherein said valve (5) is mechanical or electric.
  3. Security device for toilets according to claim 1, wherein said flushing means (3) is a compressor.
  4. Security device for toilets according to claim 2, wherein said valve (5) comprises a ball that closes the water communication between said tank (4) and said deposit (2) when the flushing means (3) is operated.
EP11193031.9A 2010-12-22 2011-12-12 Flushing device for a toilet Not-in-force EP2468968B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES201031919A ES2385170B1 (en) 2010-12-22 2010-12-22 TOILET SAFETY DEVICE.

Publications (2)

Publication Number Publication Date
EP2468968A1 EP2468968A1 (en) 2012-06-27
EP2468968B1 true EP2468968B1 (en) 2016-01-13

Family

ID=45315624

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11193031.9A Not-in-force EP2468968B1 (en) 2010-12-22 2011-12-12 Flushing device for a toilet

Country Status (3)

Country Link
EP (1) EP2468968B1 (en)
CN (1) CN102535604B (en)
ES (1) ES2385170B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2626494B1 (en) * 2016-01-22 2018-02-27 Roca Sanitario, S. A. TOILET DISCHARGE SYSTEM

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB265348A (en) * 1925-12-17 1927-02-10 Taylor William Improvements in and relating to water closets & seats therefor
DE941900C (en) * 1950-10-07 1956-04-19 Ing Hans Aue Flush toilet with a flushing container acting as an air tank
FR1429203A (en) * 1965-04-08 1966-02-18 Toilet bowl with integrated flush and silent filling
US3603336A (en) * 1970-05-05 1971-09-07 American Standard Inc Fluidically controlled refill mechanism with backflow preventer
US4345619A (en) * 1979-06-12 1982-08-24 Jh Industries, Inc. Backflow preventer
DE3512305A1 (en) * 1985-04-04 1986-10-09 Georg Rost & Söhne Armaturenfabrik GmbH & Co KG, 4952 Porta Westfalica WC SINK SYSTEM
KR100738756B1 (en) * 2000-06-01 2007-07-12 가부시기가이샤 이낙스 Western-style water closet
CN201116379Y (en) * 2007-10-22 2008-09-17 邓鹏辉 Toilet seat with concealed water tank
CN101718111B (en) * 2009-11-03 2011-06-29 王卫平 Water-saving and deodorizing water closet

Also Published As

Publication number Publication date
CN102535604B (en) 2015-08-19
ES2385170B1 (en) 2013-04-15
EP2468968A1 (en) 2012-06-27
ES2385170A1 (en) 2012-07-19
CN102535604A (en) 2012-07-04

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