EP4389997A1 - Soupape de vidange pour réservoir de chasse d'eau et réservoir de chasse d'eau avec soupape de vidange - Google Patents

Soupape de vidange pour réservoir de chasse d'eau et réservoir de chasse d'eau avec soupape de vidange Download PDF

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Publication number
EP4389997A1
EP4389997A1 EP23212250.7A EP23212250A EP4389997A1 EP 4389997 A1 EP4389997 A1 EP 4389997A1 EP 23212250 A EP23212250 A EP 23212250A EP 4389997 A1 EP4389997 A1 EP 4389997A1
Authority
EP
European Patent Office
Prior art keywords
electric drive
valve body
drain valve
drain
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.)
Pending
Application number
EP23212250.7A
Other languages
German (de)
English (en)
Inventor
Gerhard Rothstein
Philipp SCHULTE
Thomas Knupfer
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.)
Viega Technology GmbH and Co KG
Original Assignee
Viega Technology GmbH and Co KG
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 Viega Technology GmbH and Co KG filed Critical Viega Technology GmbH and Co KG
Publication of EP4389997A1 publication Critical patent/EP4389997A1/fr
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D5/00—Special constructions of flushing devices, e.g. closed flushing system
    • E03D5/10—Special constructions of flushing devices, e.g. closed flushing system operated electrically, e.g. by a photo-cell; also combined with devices for opening or closing shutters in the bowl outlet and/or with devices for raising/or lowering seat and cover and/or for swiveling the bowl
    • 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
    • E03D1/34—Flushing valves for outlets; Arrangement of outlet valves
    • E03D1/35—Flushing valves having buoyancy

Definitions

  • the invention relates to a drain valve for a sanitary cistern with a valve body that can be raised and lowered and which, in a closed position, rests sealingly with a sealing section on a valve seat surrounding a drain opening, an electric drive for lifting the valve body from the closed position and a device for transmitting a force from the electric drive to the valve body.
  • the invention relates to a sanitary cistern, in particular for a toilet or urinal, with a drain valve according to the invention.
  • Sanitary cisterns particularly toilet cisterns, and drain valves for them are known in many designs. They are usually designed as mechanically operated drain valves or mechanically operated toilet cisterns.
  • drain valves of the type mentioned above are also known, which are equipped with an electrical drive to lift the valve body from the closed position. Such electrically operated drain valves are used, for example, for the automatic flushing of urinals or in toilet cisterns for disabled toilets.
  • flushing flow restrictors are used, preferably adjustable flushing flow restrictors, which are arranged in the cistern, at the bottom of the valve seat, or inserted into the flush pipe connected to the toilet or urinal below the valve seat of the drain valve.
  • a variable setting of the flushing flow can only be carried out by the installer with great effort after the initial setting and initial installation of the flushing flow restrictor.
  • the known drain valve technology is therefore complex.
  • the invention was based on the object of creating an electrically actuated drain valve for a sanitary cistern, which eliminates at least some of the above-mentioned disadvantages of the prior art.
  • a sanitary cistern in particular a toilet or urinal cistern, is also to be provided, which eliminates at least some of the above-mentioned disadvantages of the prior art.
  • the drain valve according to the invention is characterized in that the electric drive and the force transmission device are designed such that the valve body is pressed against the valve seat in the closed position by means of the electric drive and/or the force transmission device.
  • a drain valve of the type mentioned above makes it possible for a drain valve of the type mentioned above to be designed in such a way that forces occurring in the cistern Support the movement of the valve body into the flushing position (open position) and into the closed position.
  • the tensile and compressive forces to be applied by the electric drive of the drain valve according to the invention are accordingly reduced or relatively low.
  • the tensile and compressive forces to be applied in the drain valve according to the invention can, for example, be less than 3 Newtons.
  • the drive of the drain valve according to the invention can thus lift the valve body from the closed position (in other words: pull it upwards) and, conversely, push it downwards from an open position (in other words: actively lower it).
  • Existing buoyancy and downforce forces in the cistern in which the drain valve according to the invention is installed support the drive of the drain valve when raising and lowering the valve body.
  • drain valve according to the invention can be constructed comparatively easily, as will be explained below, in particular with reference to the attached drawing.
  • the drain valve according to the invention enables a variably adjustable movement of the valve body from the closed position to a predetermined open position or to different open positions by means of an adapted control of the electric drive.
  • a conventional flushing flow throttle which can be mechanically adjusted if necessary, can therefore be dispensed with.
  • the power transmission device has a threaded spindle, a rack, a rack-shaped gear section or a crank drive.
  • the power transmission device is preferably designed in such a way that when opening and/or closing the drain valve functions essentially without self-locking. This allows the drain valve according to the invention to be operated with improved energy efficiency.
  • a further advantageous embodiment of the invention is characterized in that the valve body is designed such that when it is immersed in a liquid, preferably fresh water, in a container, in particular a sanitary cistern, a buoyancy force acts on it that is greater than a downforce acting on it at the same time, the resulting force from the buoyancy force and the downforce being smaller than a holding force that the electric drive, preferably in the non-energized state, and/or the power transmission device can hold at a standstill without this holding force causing a movement of the electric drive and/or the power transmission device.
  • This embodiment also results in improved energy efficiency of the drain valve according to the invention.
  • a comparatively low energy consumption can be achieved with the drain valve according to the invention in particular if the electric drive and/or the device for power transmission are designed in such a way that the holding force is a maximum of 10% greater, preferably a maximum of 5% greater, particularly preferably a maximum of 3% greater than the resulting force from the buoyancy force and the downforce.
  • the sealing section which rests sealingly on the valve seat in the closed position is immediately followed by a body section which surrounds the sealing section and projects radially therefrom, defining a lower valve body surface on which a fluid pressure acts in an upward direction when the drain valve is used as intended, whereby this body section projects radially from the sealing section by only up to 6 mm, preferably only up to 4 mm, particularly preferably only up to 2 mm.
  • the The valve body surface that protrudes radially from the valve seat and on which buoyancy forces act when the drain valve is submerged is relatively small.
  • the pressure or holding force exerted by the electric drive, preferably when the power is not applied, can therefore also be relatively small.
  • the sealing surface defined by the valve seat and the sealing section associated with the valve seat is preferably relatively small.
  • the force with which the valve body is pressed against the valve seat in the closed position by means of the electric drive and/or the force transmission device, and which is required to ensure reliable sealing of the drain opening surrounded by the valve seat can be set to a minimum value or selected to be correspondingly small.
  • the size of the sealing surface is, for example, in the range from 15 to 40 mm 2 , preferably in the range from 20 to 35 mm 2 , particularly preferably in the range from 25 to 32 mm 2 .
  • a further advantageous embodiment of the invention provides that the electric drive is provided with a holding force amplifier or holding torque amplifier.
  • This embodiment offers the advantage that the drain valve can be dimensioned with regard to a parameter that increases the buoyancy of the submerged valve body, for example an increase in a valve body surface that is effective for the buoyancy of the submerged valve body, so that a relatively high buoyancy force is achieved, while on the other hand the energy requirement for holding the valve body in the reliably sealing closed position remains or can remain relatively low.
  • the holding force amplifier or holding torque amplifier can, for example, be designed in such a way that the electric drive (motor) is short-circuited during the period in which the valve body is in the closed position and reliably seals the drain opening.
  • the electric drive of the drain valve according to the invention is a motor having a motor shaft, preferably a gear motor.
  • the electric drive of the drain valve according to the invention is designed as a linear motor. In both cases, this design offers the advantage that different positions of the valve body can be variably adjusted over a relatively large vertical adjustment range (stroke range).
  • a further advantageous embodiment of the invention is characterized in that the electric drive is provided with a motor control in a bridge configuration or is connected to such a motor control.
  • a motor control motor bridge
  • a higher holding torque can be achieved than without. In this way, the energy efficiency of the drain valve according to the invention can be improved.
  • the device for power transmission is designed as a gear and has at least one gear ratio, preferably a spur gear stage.
  • the at least one gear ratio of the gear is preferably designed such that the gear produces a small gear ratio, for example a relatively small stroke of the valve body per motor rotation.
  • a small gear ratio enables the gear to have a high level of efficiency.
  • the gear is preferably designed such that it functions essentially without self-locking, for example without significant self-locking.
  • An advantageous embodiment of the device for power transmission provides that the gear has a rack and at least one spur gear stage.
  • a further advantageous embodiment of the device for power transmission provides that the gear has a spindle and at least one spur gear stage.
  • the spindle pitch is preferably relatively large; it can be, for example, approximately 15 mm or more.
  • a further advantageous embodiment of the drain valve according to the invention provides that the device for power transmission or the gear is arranged in a casing or encapsulation that protects against contamination.
  • the casing or Encapsulation is preferably designed to be flexible.
  • the casing or encapsulation can, for example, have wall sections similar to spring bellows or wall sections that can be pushed into one another like a telescope.
  • a further advantageous embodiment of the invention is characterized in that the valve body defines a pipe envelope surface or vertical longitudinal axis, wherein the electric drive is arranged essentially axially aligned with the pipe envelope surface or longitudinal axis of the valve body.
  • the electric drive can be combined with the valve body as a structural unit.
  • the valve body is, for example, directly connected or coupled to the power transmission device in the form of a gear and/or to the electric drive in a movable manner.
  • the valve body, gear and/or electric drive are connected or coupled to one another essentially without play relative to one another.
  • the movable connection between the valve body and drive or between the valve body and the power transmission device (gear) is preferably designed in the form of a rotary or pivot bearing.
  • the electric drive and/or the power transmission device are preferably coupled to the valve body without a lever, i.e. without a lever mechanism.
  • the electric drive is mounted on a bracket that can be attached to the inside of a cistern wall, preferably detachably.
  • the bracket can be attached to the relevant cistern wall using screws or locking elements formed on the wall and the bracket, for example.
  • a further advantageous embodiment of the invention provides that the valve body is provided on its outside with at least one chamber for receiving water is provided, wherein the chamber has at least one ventilation opening at its upper end and ends at a vertical distance above the sealing section, and wherein the chamber has at least one opening at its lower end which acts as a throttle, which ensures that when the drain valve is open, a water level defined by the water in the chamber sinks more slowly than a water level defined by the water in the cistern.
  • This configuration effects a servo drive in the sense of a reduction in the forces to be applied by the electric drive to lower the valve body. This achieves an enormous increase in the energy efficiency of the electric drive of the drain valve.
  • valve body of the drain valve according to the invention is preferably designed in the form of an overflow pipe and provided with a seal associated with the valve seat, which is made, for example, of rubber or elastomer.
  • the seal has a section which is designed in the form of a ring segment of a hollow sphere or a conical pipe socket, this section at least partially defining the sealing section.
  • the seal associated with the valve body of the drain valve according to the invention can be designed in the shape of an annular disk. Such a seal can be produced comparatively inexpensively.
  • the electric drive of the drain valve is designed for battery operation, with a battery housing or battery housing part being electrically connected to the electric drive via a power supply cable.
  • This embodiment enables the use of the drain valve according to the invention regardless of whether in a The drain valve according to the invention can therefore be used or retrofitted cost-effectively in cisterns that are or were installed without their own power line.
  • the present invention also relates to a sanitary cistern, in particular for a toilet or urinal, which is equipped with a drain valve according to the invention, wherein the drain valve can have at least one of the configurations described above.
  • the cistern equipped in this way is characterized by the advantages stated above in relation to the drain valve according to the invention or its configurations.
  • the valve seat on which the valve body rests in its closed position can be an integral part of the cistern or can be formed on a drain nozzle that is enclosed in a liquid-tight manner in a bottom opening of the cistern.
  • the valve seat is formed on a plug-in nozzle that can be inserted into a drain nozzle attached or formed on the bottom of the cistern.
  • the drain nozzle or the plug-in nozzle is preferably provided with a guide for the valve body that can be raised and lowered, the guide being connected to the drain nozzle or plug-in nozzle via one or more vertical spacers and supported on the latter.
  • the Figures 1 to 2b show a first embodiment of the drain valve 1 according to the invention, which is intended for use in a sanitary cistern (see also Fig. 3a ).
  • the cistern not shown may, for example, be a cistern for a toilet or urinal.
  • the drain valve 1 has a valve body 2 that can be raised and lowered and which, in a closed position, rests sealingly with a sealing section 3.1 on a valve seat 5 surrounding a drain opening 4 (cf. Fig. 2a ).
  • the valve body 2 is designed as an overflow pipe and is provided with a seal 3 associated with the valve seat 5, which is made, for example, of rubber or elastomer.
  • the seal 3 has a section 3.2 which is designed in the form of a ring segment of a hollow sphere or a conical pipe nozzle.
  • the valve seat 5 is formed on a plug-in connector 6, which can be inserted into a drain connector 8 attached or formed on the bottom of the cistern 7.
  • the plug-in connector 6 is provided with a guide 6.1 for the valve body 2, which can be raised and lowered, wherein the guide 6.1 is connected to the plug-in connector 6 via several vertical spacers 6.2 and is supported on the latter.
  • the drain valve 1 comprises an electric drive 9 for lifting the valve body 2 from the closed position and a device 10 for transmitting or translating a force from the electric drive 9 to the valve body 2.
  • the electric drive 9 is designed, for example, in the form of an electric motor having a motor shaft 9.1
  • the device 10 for power transmission is designed, for example, in the form of a spindle gear.
  • the valve body 2 defines a pipe envelope surface 2.1 or vertical longitudinal axis 2.2, wherein the motor with the motor shaft 9.1 is arranged substantially axially aligned with the pipe envelope surface 2.1 or longitudinal axis 2.2 of the valve body 2 (cf. Fig. 2b ).
  • the electric drive 9 and the device 10 for power transmission are arranged, for example, in a cylindrical housing 11, which has at least two elongated, vertical and parallel through-openings 12 for receiving and passing through horizontal axle pins 10.1 connected to the valve body 2.
  • the axle pins 10.1 are aligned with one another and define a common axis, preferably a rotation axis. They are connected to a vertical spindle sleeve 10.2, which surrounds the threaded spindle 10.3 of the spindle gear and is in engagement with it.
  • the spindle sleeve 10.2 and the axle pins arranged on it define a cross-shaped body.
  • the two elongated, parallel through-openings of the cylindrical housing 11 guide the axle pins 10.1 with little play and the associated spindle sleeve 10.2 when raising and lowering the valve body 2 (cf. Fig. 2a and 2 B ).
  • the cylindrical housing 11 is closed at its lower end with a cap or lid-shaped housing base (closure) 13, which has a vertical bore 13.1 for the rotary mounting of the threaded spindle 10.3.
  • the housing 11 is arranged in an enclosure 14 that protects the gear and the motor from contamination.
  • the enclosure 14 is flexible. It has an upper bellows-like wall section 14.1 and a lower bellows-like wall section 14.2, which are connected to one another via a cylindrical wall section 14.3 ( Fig.1 ).
  • the cylindrical wall section 14.3 has through openings 14.4 which are aligned with one another and into which bearing or union sleeves 15 are inserted in a liquid-tight manner to accommodate the oppositely directed ends of the axle journals 10.1.
  • the valve body 2 designed as an overflow pipe, has vertically projecting tabs or legs 2.4 that define a joint fork.
  • the tabs or legs 2.4 of the joint fork have through-openings on which bolts 18 connected to the axle pins 10.1 are rotatably mounted.
  • the cylindrical housing 11 extends with its lower end, in particular with the housing base 13, into the inlet opening 2.5 of the tubular valve body 2.
  • the housing base 13 is connected in a liquid-tight manner to the lower end of the lower bellows-like wall section 14.2 of the encapsulation 14.
  • the housing 11 At its upper end, the housing 11 has a circumferential collar or flange 11.1 on the outside, which is connected in a liquid-tight manner to the upper end of the upper bellows-like wall section 14.1 of the encapsulation 14. Furthermore, the housing 11 and the encapsulation 14 are designed in such a way that the housing 11 projects upwards beyond the encapsulation 14.
  • a holder 16 is attached to the section 11.2 of the housing 11 that projects vertically beyond the encapsulation 14, which serves in particular to support the electric drive 9.
  • the holder 16 can be detachably attached to the inside of a wall 7.1 of the cistern 7. For this purpose, it has, for example, a base 16.1 with fastening holes 16.2.
  • An arm or boom 16.3 is formed on the base 16.1, which has a socket 16.4 at its cantilevered end for the positive fastening of the housing 11 surrounding the motor.
  • the spindle gear and the valve body 2 are also indirectly mounted on the bracket 16 through the housing 11 fastened to the bracket 16.
  • the valve body 2 is designed in such a way that when it is immersed in a liquid, for example fresh water, in a cistern 7 or another container, a buoyancy force acts on it that is greater than a downforce acting on it at the same time, the resulting force from the buoyancy force and the downforce being smaller than a holding force that the electric motor (electric drive) can hold at a standstill in the non-energized state without this holding force causing the motor to move.
  • the holding force is greater than the force that results as a resultant force from the buoyancy force and the contact force acting on the seal 3.
  • the electric drive 9 of the drain valve 1 is preferably designed for battery operation, with a battery housing or battery housing part (not shown) being electrically connected to the electric drive 9 via a power supply cable.
  • the activation of the electric drive 9 and thus the opening of the drain valve 1 can be carried out, for example, by means of an actuating plate (not shown) which has a switch or button for switching on the electric drive 9.
  • the schematically illustrated embodiment of the drain valve 1' according to the invention differs from that shown in the Figures 1 to 2b shown embodiment in that the valve body 2 is provided on the outside with one or more chambers 2.6 for receiving water.
  • the chambers 2.6 each have at least one Ventilation opening 2.7 and one or more small openings 2.8 at the lower end, so that the chambers 2.6 also fill with water when the cistern 7 is filled with water.
  • the chambers 2.6 end at the bottom with a vertical distance above the sealing section 3.1 of the valve body 1' or above the guide 6.1 connected to the plug-in socket 6 via the spacers 6.2.
  • the electric drive 9 and the device for power transmission (gearbox) 10 from the electric drive 9 to the valve body 2 are in the Figures 3a and 3b not shown.
  • the small openings 2.8 of the chambers 2.6 act as a throttle, which ensures that when the drain valve 1' is open, a water level 2.9 defined by the water in the respective chamber 2.6 sinks more slowly than a water level 7.3 defined by the water in the cistern 7.
  • the water 2.10 in the chambers 2.6 above the water level 7.3 in the cistern 7 generates an additional weight force, which supports the movement of the valve body 2 into the closed position.
  • the chambers 2.6 can also be referred to as a servo lifting bell.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sanitary Device For Flush Toilet (AREA)
EP23212250.7A 2022-12-19 2023-11-27 Soupape de vidange pour réservoir de chasse d'eau et réservoir de chasse d'eau avec soupape de vidange Pending EP4389997A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022133898.3A DE102022133898A1 (de) 2022-12-19 2022-12-19 Ablaufventil für einen Spülkasten und Spülkasten mit einem Ablaufventil

Publications (1)

Publication Number Publication Date
EP4389997A1 true EP4389997A1 (fr) 2024-06-26

Family

ID=88975509

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23212250.7A Pending EP4389997A1 (fr) 2022-12-19 2023-11-27 Soupape de vidange pour réservoir de chasse d'eau et réservoir de chasse d'eau avec soupape de vidange

Country Status (2)

Country Link
EP (1) EP4389997A1 (fr)
DE (1) DE102022133898A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060041999A1 (en) * 2004-09-01 2006-03-02 Sanderson Dilworth D Digital electronic volume/flow control sensor toilet
KR20080028006A (ko) * 2006-09-26 2008-03-31 김영오 좌변기용 전동식 물내림 장치
DE202013002082U1 (de) * 2013-03-06 2013-03-18 Sanitärtechnik Eisenberg GmbH Ablaufarmaturgrundkörper, Auslösemodule, Verpackungseinheit und Ablaufarmatur
CN114108761A (zh) * 2021-11-29 2022-03-01 佛山市恒洁卫浴有限公司 冲水方法以及便器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060041999A1 (en) * 2004-09-01 2006-03-02 Sanderson Dilworth D Digital electronic volume/flow control sensor toilet
KR20080028006A (ko) * 2006-09-26 2008-03-31 김영오 좌변기용 전동식 물내림 장치
DE202013002082U1 (de) * 2013-03-06 2013-03-18 Sanitärtechnik Eisenberg GmbH Ablaufarmaturgrundkörper, Auslösemodule, Verpackungseinheit und Ablaufarmatur
CN114108761A (zh) * 2021-11-29 2022-03-01 佛山市恒洁卫浴有限公司 冲水方法以及便器

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