WO2015035104A1 - Procédé et dispositif de prévention de vidage à action siphonique - Google Patents

Procédé et dispositif de prévention de vidage à action siphonique Download PDF

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Publication number
WO2015035104A1
WO2015035104A1 PCT/US2014/054167 US2014054167W WO2015035104A1 WO 2015035104 A1 WO2015035104 A1 WO 2015035104A1 US 2014054167 W US2014054167 W US 2014054167W WO 2015035104 A1 WO2015035104 A1 WO 2015035104A1
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WO
WIPO (PCT)
Prior art keywords
drain pipe
overflow
pipe
water
chamber
Prior art date
Application number
PCT/US2014/054167
Other languages
English (en)
Inventor
R. Kevin DAWES
Original Assignee
Dawes R Kevin
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 Dawes R Kevin filed Critical Dawes R Kevin
Publication of WO2015035104A1 publication Critical patent/WO2015035104A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • E03C1/24—Overflow devices for basins or baths
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • E03C1/28—Odour seals
    • E03C1/29—Odour seals having housing containing dividing wall, e.g. tubular

Definitions

  • the presently described invention relates generally to overflow valves as used in plumbing fixtures such as bathtubs, sinks, roof drains and other vessels. More specifically it relates to a new method for the prevention of water overflowing a vessel during an unattended filling operation through the use of a siphonic overflow device that is connected to the conventional drain pipe in place of the existing conventional overflow drain pipe.
  • the first idea was a solid plate mounted in the hole with a chain attached to the plate and a rubber drain stopper at the other end. This idea was used for sometime until a second idea came along, namely the tub stopper and trip lever to move to move the tub stopper up and down.
  • the lever is attached to a rod which went down the backside of the tub and then under the tub to the drain where it attaches to the stopper.
  • This assembly required a housing to enclose the trip lever rod. Once this housing was in place some trip lever plate manufacturers cut a slot in the plate.
  • the bath tub filling system includes a valve that operates under 50 psi to 80 psi of pressure, a draining system that includes a convention bath tub drain pipe having a diameter of 1 1/2" and that drains by gravity flow and the convention slot type "overflow".
  • the inlet flow rate typically is greater than discharge flow rate of the combined conventional, gravity drain outlet flow rate and the conventional "overflow" flow rate.
  • a bathtub overflow that "protects against accidental flooding resulting from an unattended filling operation" is not known, until the present invention.
  • the presently described invention relates generally to overflow plumbing as used in fixtures such as bathtubs, sinks and other vessels. More specifically it relates to a new system and method for the prevention of water overflowing a vessel during an unattended filling operation through the use of a siphonic overflow device that has a flow discharge rate greater than the fill rate for the vessel.
  • NOSO No Overflow Siphonic Overflow
  • This system prevents flooding by the intermittent use of siphonic action to lower a water level in a bathtub when the fill rate of water into the tub has caused the water level in the tub to reach a predetermined level, thus preventing overflow from containment vessels, such as, but not limited to, bathtubs, lavatory washbasins, sinks, hot water heater catchment trays and other catchment trays.
  • An exemplary set of circumstances and sequence of events that could give rise to the need for and that would initiate the presently describe device are as follows.
  • a bathtub or other vessel is being filled with water through the bathtub inlet.
  • the bathtub drain is closed and the water level begins to rise.
  • the person responsible for filling the bathtub forgets that the tub is filling.
  • the water in the drain pipe in cooperation with the present siphonic system, creates a siphon and greatly increases the rate of water flowing through the overflow such that the water drainage rate exceeds the water fill rate and flows out the drain.
  • the siphonic discharge is complete, then normal, lower flow rate drain of overflow water then falls or drains away into the sewage system in the normal manner and without causing any damage.
  • the NOSO device uses the principle of siphoning, it has the capability to discharge water from a vessel at a flow rate that is greater that the gravity drainage flow rate of conventional drainage or overflow systems.
  • the NOSO device is comprised of: 1) a NOSO cable system and waste water overflow housing designed to operate the tub stopper up and down and to be the inlet for the NOSO device positioned in the conventional place of the trip lever assembly housing and of sufficient size to fully encompass the hole for the conventional trip lever assembly housing ("overflow housing"); 2) an outer pipe of the NOSO device which is of a diameter twice the size of the waste water pipe, which is open at the top toward the inlet of the overflow housing and connects directly to the waste water pipe to thereby create a direct flow from the overflow housing to the waste water pipe in the gap between the outer pipe, middle pipe and inner pipe ("outer chamber overflow”); 3) a middle pipe of the NOSO device which is of a diameter one and a half times the size of the waste water pipe which is open at the top toward the inlet of
  • the distance between the top of the inner pipe and the opening in the overflow housing is set to be sufficient, under conventional siphonage principles to create the pressure, or "head”, necessary to actuate the siphonic effect in the siphonic chamber.
  • the clearance between the inner pipe, the inverted “u” cap and the middle pipe and inverted “u” cap is set to be a distance sufficient to allow for the siphonic effect to occur between middle pipe, inner pipe and the inverted “u” cap when sufficient head is present, thus creating a siphonic chamber ("siphonic chamber").
  • An alternative embodiment of the NOSO device includes weep holes in the bottom of the middle pipe, outside of the inverted "u" cap. These weep holes function to permit some of the overflow from the main overflow chamber to flow directly to the outer overflow chamber and to drain any water found at the bottom of the main overflow chamber. The drainage through the weep holes also functions to prevent pooling in the main overflow chamber and to prevent any problems associated with stagnant water that otherwise might remain in the main overflow chamber.
  • FIG. 1 is a 3/4 perspective view illustrating a part of a preferred embodiment cable system and waste water overflow housing.
  • FIG. 2 is a cut-away side perspective view illustrating the Figure 1 embodiment.
  • FIG. 3 is a cut-away front perspective view illustrating the Figure 1 embodiment.
  • FIG. 4 is the formula for the NOSO device effective overflow area.
  • FIG. 5 is a cut-away perspective view of an alternative embodiment that includes weep holes.
  • the presently described invention relates generally to overflow system, valves and method used to prevent overflows in plumbing fixtures such as bathtubs, sinks, roof drains and other vessels. More specifically it relates to novel systems, method and devices for the prevention of water overflowing a vessel during an unattended filling operation through the use of a siphonic overflow valve in place of the existing conventional overflow drain pipe.
  • the device is designed to prevent flooding by the intermittent use of siphonic action to lower a water level thus preventing overflow over a containment vessel, such as, but not limited to, bathtubs, lavatory washbasins, sinks, hot water heater catchment trays and other catchment trays.
  • a containment vessel such as, but not limited to, bathtubs, lavatory washbasins, sinks, hot water heater catchment trays and other catchment trays.
  • An exemplary set of circumstances and sequence of events that give rise to the need for and that would initiate the presently describe siphonic device are as follows.
  • a bathtub or other vessel is being filled with water through the bathtub inlet.
  • the bathtub drain is closed and the water level begins to rise.
  • the person responsible for filling the bathtub forgets that the tub is filling.
  • the water level reaches the invert level of the vessel overflow and water begins to flow over and into the overflow and down the outer chamber (which is radially outward of the inner chamber) and flows into the conventional drain under gravity powered flow rate, at that moment the water fill rate is greater than the drain rate and the water level rises.
  • the water in the outer chamber completely fills the outer chamber, it then overflows into the main chamber then into the siphonic chamber.
  • the water drain rate exceeds the water fill rate; the water level in the tub quickly lowers.
  • the siphon is broken, and the water flows or falls away into the sewage system in the normal manner until (i) someone shuts off the fill water, (ii) reduces the fill rate, or (iii) the water level again rises as described above to create a second siphonic effect, and so on until the filling of the tub is stopped.
  • the bathtub/vessel can overflow from the flow of the water from the inlet piping.
  • the flow rate of the filling water is greater than the flow rate of the draining rate or overflow draining rate of the tub, it eventually will overflow and cause flooding.
  • the present device is functions to prevent the overflow of vessels by enabling an overflow or discharge flow rate the is greater than the fill flow rate by providing structures that automatically create a siphon, and thus multiply the out flow rate to be greater than the drain or overflow rate that would result from a gravity based flow through the conventional tub overflow slit.
  • the first part of the overflow prevention device is an upper housing positioned in the place of the conventional trip lever assembly housing and of sufficient size to fully encompass the hole for the trip lever assembly housing, shown at inlet 210 in Figure 2.
  • Figure 1 illustrates a 3/4 perspective view illustrating a preferred embodiment cable system and waste water overflow housing 100.
  • Figure 1 further illustrates the relative thickness 110 of the overflow housing 100 in relation to the diameter 120 of the overflow housing 100.
  • the control handle 130 operates the cable system to move the tub stopper up and down and manages the waste water overflow system.
  • the second part of the first preferred embodiment overflow device include outer pipe 220 which is of a diameter preferably about 1 and 2/3 greater than the diameter of a conventional 1 and 1 ⁇ 2 inch waste water pipe, in other words, about 4 inches.
  • Pipe 220 is connected to transition drain pipe 299, which has an inner diameter that is about 1 and 1/3 greater than the diameter of the conventional 1 and 1 ⁇ 2 inch drain, or about 2 inches.
  • Pipe 220 is open at the top toward the inlet 210 and connects directly to the transitional drain pipe 299 to create an outer chamber overflow 230 annular channel. This channel provides a direct flow path from the inlet 210 to the transition drain pipe 299, and then to the convention drain pipe.
  • FIG. 2 and 3 illustrate the location of the pipes each with respect to each other, such as the outer pipe 220 in relation to the inlet 210, and the location and flow paths of water overflow through the outer chamber overflow 230, through the siphon and then to the drain.
  • the third part of the overflow prevention device is a middle pipe 240 which is preferably of a diameter about 3 inches or twice the diameter of the convention drain pipe.
  • Middle pipe 240 is open at the top toward the inlet 210 and is closed toward the transitional drain pipe 299, and in cooperation with the other components, creates and defines the main overflow chamber 250)
  • middle pipe 240 is positioned below and in fluid communication with the inlet 210. As shown by the central arrows, water flows into the main overflow chamber 250 directly from the inlet and from water that overflows from the annular gap at 230.
  • a fourth integral part of the preferred overflow prevention device is an inner pipe
  • Water flowing at 270 is the water that flows under and when the siphon has been established.
  • Figures 2 and 3 also illustrate the location of the inner pipe 260 as positioned below the inlet 210 and centrally located within the other pipes and its top end preferably positioned in the lower part of the chamber 250, with its closed end defining the bottom of the chamber 250.
  • the diameter of the inner pipe 260 as compared to that of the transitional drain pipe 299, the middle pipe 240 and the outer pipe 220 is shown in both Figures 2 and 3.
  • the flow path of overflow water through the inner pipe 270 to the conventional waste water drain located at 310 is also shown.
  • Another integral part of the overflow prevention device is an inverted "u" cap 280 that is positioned just above and is open toward the inner pipe 260.
  • the inverted “u” cap 280 preferably has the same diameter as the diameter of the transitional drain pipe 299, preferably about 2 inches.
  • the "u” cap 280 is closed at the top toward the inlet 210, and blocks draining water from flowing directly into the inner pipe 260.
  • water flowing into the inner pipe 260 must flow through a circuitous route, that is, down the chamber 250, around the bottom of the "u” cap 280, up along the top part of the inner pipe 260 to the top of the pipe 260 and then over the top of pipe 260 and then down into the pipe 260.
  • inverted “u” cap 280 is positioned in the device at a height that is below the height of the inlet 210 and is above the inner pipe 260.
  • the circular wall of the "u” cap extends from its closed top downward toward, but does not contact the bottom of the chamber 250, to provide a gap or flow path from the chamber 250 to the top of the inner pipe 260.
  • the distance 300 between the top of the inner pipe 260 and the inlet 210 must be sufficient to create of the necessary pressure, or "head” to actuate the siphonic effect in the siphonic chamber 290 when said sufficient water is present.
  • the clearance 320 between the bottom of middle pipe 240 and the bottom of the wall of the inverted "u” cap 280, and the clearance, or gap distance 330 between the outer diameter of inner pipe 260 and the inner diameter of the inverted "u” cap 280 must be sufficient to create the siphonic effect between middle pipe 240, inner pipe 260 and the inverted "u” cap 280 when sufficient head is present in the main overflow chamber 250, thus together cooperating to create a siphonic effect in the siphonic chamber 290 when the bathtub overflows.
  • the effective overflow area of the device may be expresses as the product of the diameter of the device overflow housing 120 opening and the length of the device overflow housing 110, multiplying the product by pi, then dividing the resulting number by two, show by the equation of Figure 4.
  • Figure 4 is the formula for calculating the device's effective overflow area.
  • an alternative embodiment includes weep holes 500 in the bottom of the middle pipe 240, radially outward of the inverted "u" cap 280.
  • the holes permit weeping some overflow water from the main overflow chamber 250 into the outer overflow chamber 230.
  • Figure 5 illustrates a cross-section view of the middle pipe 240, inner pipe 260, and inverted "u" caps 280 in relation to the location of the weep holes 500 in the alternative embodiment.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sink And Installation For Waste Water (AREA)

Abstract

L'invention concerne un dispositif de vidage à action siphonique, sans trop-plein, pour prévenir le trop-plein d'eau d'un récipient lors d'une opération de remplissage inattendue au moyen d'un dispositif de vidage à action siphonique à la place du tuyau de drainage de trop-plein conventionnel existant raccordé au tuyau d'évacuation d'eaux usées conventionnel d'une baignoire.
PCT/US2014/054167 2013-09-06 2014-09-05 Procédé et dispositif de prévention de vidage à action siphonique WO2015035104A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361874924P 2013-09-06 2013-09-06
US61/874,924 2013-09-06

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WO2015035104A1 true WO2015035104A1 (fr) 2015-03-12

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PCT/US2014/054167 WO2015035104A1 (fr) 2013-09-06 2014-09-05 Procédé et dispositif de prévention de vidage à action siphonique

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017151150A1 (fr) * 2016-03-04 2017-09-08 Dawes R Kevin Dispositif et procédé de prévention de débordement à siphon
CN113027554A (zh) * 2021-03-15 2021-06-25 西安西热节能技术有限公司 一种双通道加热器疏水冷却段进口结构及设计方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5925242A (en) * 1997-09-24 1999-07-20 Mcghee; John D. Sand trap and flow controller mechanism for a bathtub
US20110081203A1 (en) * 2009-10-07 2011-04-07 Vander Linden Iii Paul G Movable pipeline tee
US20130081203A1 (en) * 2011-10-04 2013-04-04 Aqualogic Nt Limited Tub overflow assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5925242A (en) * 1997-09-24 1999-07-20 Mcghee; John D. Sand trap and flow controller mechanism for a bathtub
US20110081203A1 (en) * 2009-10-07 2011-04-07 Vander Linden Iii Paul G Movable pipeline tee
US20130081203A1 (en) * 2011-10-04 2013-04-04 Aqualogic Nt Limited Tub overflow assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017151150A1 (fr) * 2016-03-04 2017-09-08 Dawes R Kevin Dispositif et procédé de prévention de débordement à siphon
CN113027554A (zh) * 2021-03-15 2021-06-25 西安西热节能技术有限公司 一种双通道加热器疏水冷却段进口结构及设计方法

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