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
  • E03C1/02—Plumbing installations for fresh water
  • E03C1/08—Jet regulators or jet guides, e.g. anti-splash devices
• • 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
  • E03C1/02—Plumbing installations for fresh water
  • E03C1/10—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves
  • E03C1/102—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves using an air gap device
• • 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
  • 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
  • E03D3/12—Flushing devices discharging variable quantities of water

Definitions

• the invention relates to the field of secure operation of toilets having a pressure flush to accelerate the flushing water, in order to prevent contaminated water from the toilet bowl from being sucked back into the water supply line through which the water is fed to the toilet.
• Water back suction interrupters are known to be used to prevent water back suction into water mains.
• An example of such a solution is the invention of CN U206809880.
• the principle of the interrupter is to introduce an air gap according to the standard into the stream of the supplied water. As long as the water is flowing in the correct direction, the interrupters are inactive and the air gap does not appear, but as soon as the flow of the incoming water is reversed, the air from the air gap replaces the reversed flow of water, thus preventing the water from the toilet bowl from being sucked in, as there is a loss of vacuum in the section between the intermptor and the water outlet to the toilet bowl.
• toilets with a pressure flush are known, the principle of which is to improve the flushing of the bowl by means of acceleration of the flushing water, i.e. by means of flushing water with added kinetic energy, or by means of flushing water with a so-called shock wave.
• An exemplary example is the invention of document EP B3294963, or the invention of document US2019 /330831 Al.
• the added energy is transferred to the water by a so-called air accumulator, in which air is compressed and whose energy is transferred to the flushing water during flushing.
• Air accumulators do not need an additional energy source, as they use the energy from the water pressure of the water line to compress the air.
• the intermittent module is used to prevent back suction of water from the toilet bowl with a pressure flush to accelerate the flushing water.
• the subject matter of the invention consists in that the intermittent module comprises an inlet section and an outlet outlet section.
• the inlet section has an inlet for the accelerated flushing water and at least one outlet nozzle for targeting the stream of the accelerated flushing water.
• the outlet section has at least one opening for receiving the targeted stream of accelerated flushing water from the outlet nozzle and at least one connection for connecting the outlet of the accelerated flushing water to the toilet bowl.
• an air gap is provided between the outlet nozzle and the opening.
• the purpose of the invention is to interrupt the line of accelerated flushing water, so that if the flow is reversed, water from the toilet bowl is not sucked into the water supply line. This is achieved by creating an air gap.
• a targeted stream In order for the accelerated flushing water to overcome the gap, a targeted stream must be created by the outlet nozzle to overcome the safety air gap, whereupon the accelerated flushing water continues through the outlet section of the intermittent module. The targeted stream reaches the outlet section of the intermittent module via the opening for receiving the targeted stream. If the flow is reversed, the opening does not create any flow, but instead air is sucked through the outlet nozzle, thus protecting the water line from contamination.
• the energy loss of the accelerated flushing water is at an acceptable level.
• At least one distributor of the accelerated flushing water may be integrated in the inlet section between the inlet for accelerated flushing water and the at least two outlet nozzles to distribute the accelerated flushing water to the individual outlet nozzles. If the intermittent module is intended for deployment in toilets with multiple injection nozzles of accelerated flushing water into the toilet bowl, this embodiment of the invention is highly advantageous.
• the intermittent module comprises at least one rectifier for directing the targeted stream of accelerated flushing water arranged in the air gap.
• the outlet nozzle produces a targeted stream of water, it is relatively common for the streamlines in the targeted stream of water to have a diverging behavior that causes energy and water loss in the gap region. With a rectifier, these losses are minimized without compromising the safety function of the air gap.
• the embodiment of the invention is one in which the rectifier comprises a through conical ribbed body with annular ribs, the narrower base of which is inverted towards the outlet nozzle, while the wider base of which faces the opening for receiving the targeted stream of accelerated flushing water.
• the deformation of the targeted stream increases with the increasing distance from the outlet nozzle, and therefore the expanding conical shape directs the gradually expanding streamline towards the opening.
• the gaps between the annular ribs do not impede air access in the event of flow reversal, so that the function of the air gap is not limited.
• the rectifier is provided with at least one shield for catching and diverting the sprayed flushing water away from the conical ribbed body. This is advantageous for the reason that there is a slight loss of energy in the rectification of the targeted flow, which is manifested by a squirt of water. This water needs to be captured and drained properly.
• the shield is arranged perpendicularly to the targeted stream of accelerated flushing water so that as many of the departing water droplets as possible adhere to the shield.
• annular ribs are beveled towards the targeted stream of water from their outer circumference towards their inner circumference.
• the bevel of the annular ribs creates a funnel shape that "smooths" the targeted stream, thereby reducing the streamlines' divergence, thereby maintaining the stream targeting, which then results in a better siphon effect at the outlet section of the intermittent module.
• At least one annular rib is provided with an elastic O-ring having a diameter corresponding to the diameter of the targeted stream of the accelerated flushing water with a diameter deviation of up to +/- 10%.
• the added O-ring directs the targeted stream, but due to its elasticity it is at the same time pliable so as not to deform the targeted stream.
• the annular ribs are made of elastic material.
• the elastic ribs direct the targeted stream which, by its energy, deflects the ribs from their resting position, thereby reducing the gaps between the ribs for air entrainment and improving energy conservation in the accelerated flushing water. If there is a flow fault, the elastic ribs will return to their rest position, and if the stream is reversed, the elastic ribs will expand due to elasticity and the flowing air, so that the sucked air has less resistance.
• the intermittent module may preferably have a rectifier designed differently.
• the preferably designed rectifier comprises at least two concentric rectifying tubular elements telescopically arranged relative to each other for an extended state when the targeted stream is flowing correctly and for a retracted state when the targeted stream is not flowing correctly.
• the means for setting the retracted state of the rectifier as the default state comprises a spring.
• the spring is strong enough to keep the rectifier in the retracted state in the default state, but at the same time is not too strong so that the water stream can "pull" the rectifier down and out of the retracted state under the flow time of the targeted stream.
• the intermittent module is provided with a splash water collection vessel arranged in the area below the inlet section, the outlet section and the air gap.
• the escaped water drops by gravity into the collection vessel. It is advantageous if the collection vessel is provided with at least one drain for the collected water into the toilet bowl.
• the invention also includes a toilet with pressure flushing for accelerating flushing water, the toilet substantially comprising a connection to a water supply line, further comprising at least one reservoir of pressurized flushing water connected to the connection, further comprising a flushing valve connected to the reservoir of the pressurized flushing water, further comprising at least one injection nozzle which is connected to the flushing valve via the accelerated flushing water line for injecting the accelerated flushing water into the toilet bowl, and last but not least the toilet bowl.
• the subject matter of the invention is that the intermittent module interrupts the water line of the accelerated flushing water between the flushing valve and the injection nozzle, wherein the water line downstream of the flushing valve is connected to the inlet of the inlet section of the intermittent module and at the same time the water line of the flushing water upstream of the injection nozzle is connected to the connection of the outlet section of the intermittent module.
• Such an arrangement of the intermittent module downstream of the flushing valve is important to allow the reservoir of the pressurized water to collect energy from the water pressure in the water supply line.
• the intermittent module is placed in the toilet with pressure flushing in a horizontal position.
• the horizontal position is most advantageous because of the siphon effect in the outlet section of the module.
• it is also practical in terms of the design of the entire toilet with pressure flushing because it is the least space-consuming.
• the collection vessel of the intermittent module is arranged at the upper edge of the toilet bowl. Due to the dripping of water into the container, it is advantageous that it is accessible for regular cleaning.
• Advantages of the invention include the possibility of its use in toilets with pressure flush, because although the invention allows for the physical interruption of the water line to prevent the suction of contaminated water, the invention also minimizes the energy loss of the accelerated flushing water.
• the invention is simple in design and therefore easy and not too economically expensive to deploy in new products.
• the intermittent module can be easily cleaned and serviced.
• Figure 1 shows a partially open model of a toilet with pressure flushing with an intermittent module according to the invention
• Figure 2 shows an open model of a toilet with pressure flushing with an intermittent module according to the invention
• Figure 3 shows a top view of a model of an intermittent module installed on a toilet with pressure flushing
• Figure 4 shows a model of a rectifier consisting of a conical ribbed body
• Figure 5 shows a section through the model of a rectifier according to Fig. 4,
• Figure 6 shows a model of a rectifier consisting of a conical ribbed body and fitted with elastic O-rings
• Figure 7 shows a schematic drawing of a rectifier with elastic annular ribs
• Figure 8 shows the principle of the function of the rectifier according to Fig. 7,
• Figure 9 shows a model of a rectifier consisting of a telescopic arrangement of concentric tubular elements
• Figure 10 shows a section through the model in Fig. 9,
• Figure 11 shows a section through the model of the intermittent module with the rectifier extended according to the model in Fig. 9,
• Figure 12 shows a section through the model of the intermittent module with a retracted rectifier according to the model in Fig. 9,
• Figure 13 shows the wiring diagram of the intermittent module for a toilet with pressure flushing.
• FIG 1 shows a model of a toilet 3 with pressure flushing.
• the intermittent module 1_ is visible, which is in a horizontal position above the top of the toilet bowl 2.
• Figure 2 shows the same model of a toilet 3 with pressure flushing, but uncovered to allow other components of the toilet 3 with pressure flushing to be observed, including the reservoir 17 of the pressurised flushing water and the flushing valve 19.
• Figure 3 shows a detailed illustration of the intermittent module J_.
• the intermittent module 1 consists of an inlet section 4 which exhibits an inlet 5 of accelerated flushing water consisting of a pipe, a distributor JO of the accelerated flushing water stream and outlet nozzles 6.
• the inlet section 4 may be plastic, but the choice of the appropriate material is not restrictive in terms of function.
• the inlet section 4 has just two outlet nozzles 6 and a distributor JO, which distributes the accelerated flushing water in a 70 to 30 ratio.
• the outlet nozzle 6 forms a targeted stream of accelerated flushing water to overcome the air gap.
• the outlet section 7 is designed to capture the targeted stream that crosses the air gap and to divert it via a connection 9 to the outlet of the accelerated flushing water formed by flexible hoses 23 leading to the injection nozzles 20 of the toilet 3.
• the outlet section 7 has openings 8 into which the targeted stream falls.
• the outlet section 7 is similar in material design to the inlet section 4.
• the outlet section 7_with the subsequent flexible hoses 23 is at least partially flooded with water from the previous flushing. Due to the presence of water in the next flushing, the water present is agitated, causing a siphon effect which as a result helps to force water into the opening 8. The longer is the outlet section 7, the more effective the siphon effect is.
• Flexible hoses 23 are clearly visible in Figure 3.
• the air gap in this embodiment of the invention is fitted with a rectifier JT , which is formed by a conical body of annular ribs 12.
• the rectifier JT does not touch the inlet section 4 or the outlet section 7 for hygienic reasons.
• a collection vessel 16 is located below the intermittent module 1. Shields 13 form a part of the rectifier JT to capture the sprayed water.
• FIG 4 and Figure 5 show the rectifier JT .
• the annular ribs 12 are visible, which rectify by their bevel into a funnel shape an unshown targeted stream passing through.
• the shields 13 for collecting splashed water are clearly visible and, last but not least, the installation sleeves 2J_ can be seen.
• the installation sleeves 2J_ represent one possible solution which meets the condition that the rectifier JT does not touch the inlet section 4 and the outlet section 7.
• Figure 6 illustrates an embodiment of the invention in which the two annular ribs 12 of the rectifier 11 have an elastic O ring 14 attached to them.
• the O ring 14 assists in directing the targeted stream, and can adapt to the flow due to its elasticity.
• the diameter of the O-ring 14 is chosen to match the targeted stream, but as this cannot be guaranteed in 100% of cases of flowing targeted streams, a deviation of up to 10% in size from the expected diameter of the targeted stream is chosen.
• O ring 14 is made of silicone for example.
• Fig. 7 shows a rectifier IT, the annular ribs 12 of which are flexible, made of silicone for example. In order to stay in a conical arrangement, they are fixed to a skeleton 22, which is the supporting element.
• the advantage of the elastic annular ribs 12 is that when the targeted water stream is flowing properly, the gap for air suction is narrow, see mark b, since the deflection of the annular ribs 12 from the position aTo the position
• FIG 9 and Figure 10 show another possible embodiment of the rectifier JT.
• This embodiment is formed by concentric tubular elements 15, which can telescopically extend or retract to activate or inactivate the rectifier IT .
• Figure 11 shows the rectifier IT in an operating state where it is extended by the targeted stream almost across the entire air gap between the input section 4 and the output section 7.
• the rectifier JT is in the default i.e., retracted state as shown in Figure 12.
• the retracted, otherwise default state is provided by, for example, the springs not shown.
• the initial state is terminated by the presence of a targeted stream in the rectifier IT which, by pressure on the walls of the tubular elements 15, expands them or is expanded by other suitable means from the moment of flushing.
• the rectifier 11 in this embodiment of the invention is plastic.
• Figure 13 shows the wiring diagram of the intermittent module for a toilet 3 with pressure flushing.
• the connection 18, the reservoirs 17 of the pressurized flushing water and the flushing valve 19 are upstream of the intermittent module 1 in terms of proper water flow.
• the invention meets the requirement for hygienic protection against contamination of the water supply line, but it also minimizes the energy loss of the accelerated flushing water.
• it does not restrict the preparation of accelerated flushing water in the reservoirs 17 of the pressurized flushing water because it does not interrupt the water supply line.
• rectifiers P it prevents the streamlines from splitting in the targeted stream, thus preventing energy and volume losses.
• the intermittent module for preventing back suction of water from the bowl of a toilet with a pressure flush and a toilet with a pressure flushing and with an intermittent module according to the invention will find application as sanitary equipment in human settlements.

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• 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)

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Publications (1)

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Family Applications (1)

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Citations (7)

Family Cites Families (2)

• 2021
  • 2021-03-10 CZ CZ2021-111A patent/CZ309451B6/cs unknown
• 2022
  • 2022-03-08 WO PCT/IB2022/052022 patent/WO2022189949A1/en not_active Ceased

Patent Citations (7)

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