Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K47/00—Means in valves for absorbing fluid energy
  • F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
• • 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
• • E—FIXED CONSTRUCTIONS
  • E03—WATER SUPPLY; SEWERAGE
  • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
  • E03D2201/00—Details and methods of use for water closets and urinals not otherwise provided for
  • E03D2201/20—Noise reduction features

Definitions

• the invention relates to a filling valve for filling a cistern with a fluid, in particular water, having a flow channel provided with a hydrostatically controllable main valve having a flow channel having a valve main body, a projecting into the flow channel flow body in or on the flow channel guided valve plate and comprising a valve disposed between the valve main body and the valve body in a closed position membrane. At least in the closed position, the flow body is arranged at least in sections in the flow channel.
• a filling valve has a pilot valve or pilot valve for its hydrostatic control.
• the pilot valve is usually closed, for example via a water level control or a water level measurement, whereby the hydrostatic pressure increases in front of the valve plate and the diaphragm of the main valve and this membrane and valve disc are brought into the closed position.
• the valve disc also has the opportunity to strike by a tumbling movement transversely to the flow direction against the housing wall of the valve main body. This in turn generates a short closing noise.
• An object of the invention is therefore to provide a filling valve Provide main valve of the type mentioned, in which the noise when closing the main valve is at least reduced.
• the stated object is achieved by the features of claim 1. Advantageous developments are described in the subclaims.
• the stated object is already achieved in that, in order to reduce turbulence and / or pressure fluctuations with respect to a flow direction of the fluid through the flow channel and / or in the amount of the flow body, the flow body is preferably formed continuously tapering in the flow direction.
• a fluid-flowed body at its leeward side i. downstream, a flow separation
• a flow separation which can lead to turbulence in the form of vortex or vortex entrainment to form a turbulence zone.
• the flow may be opposite to the main flow direction.
• the tapering of the flow body in the case of a laminar inflow of the fluid into the main valve, a gradual detachment of the fluid from the flow body can take place, at least largely avoiding vortex formation and thus substantially maintaining the laminar flow.
• a favorable shape for the flow of the flow body is achieved, whereby at least a pronounced reduction of the Verwirbelungszone and thus a reduction in noise can be achieved.
• the taper is suitably provided in a corresponding effective range of the flow body. Particularly preferred for this purpose is the taper steadily.
• the rejuvenation can for this purpose be continuous in the strict mathematical sense or approximately steadily.
• the flow body can taper in the flow direction over a specifically selected length or a specifically selected section along the flow direction.
• the flow body converges in the direction of flow while forming an edge.
• the flow body tapers in sections continuously in the flow direction.
• the flow body tapers continuously over its entire extension along the flow direction.
• the flow body tapers in the flow direction in its section, with which it is arranged in the closed position in the flow channel.
• the flow body tapers in a section with which it terminates with respect to the flow direction in the closed position in the flow channel, and thus in its flow direction rear portion in the flow direction continuously, in particular this rear portion at least a quarter, in particular at least one third , in particular occupies at least half of the portion of the flow body along the flow direction, with which the flow body is arranged in the closed position in the flow channel.
• the flow body may have at least three, preferably four radially extending wings, on which the flow body is arranged radially outwardly in the flow channel, in particular guided on the inner wall of the flow channel.
• the fluid may flow through the flow channel in the open position.
• the wings are preferably formed continuously tapering in the flow direction.
• the wings are preferably tapered over a portion of the flow body along the flow direction, as generally described above with respect to the taper of the flow body. The wings therefore do not necessarily have to taper over their entire extent along the flow direction in the flow direction.
• the flow body can have a carrier, for example in the form of a flow-extending projection, from which the vanes can extend radially and / or axially.
• the flow body ends axially in the flow direction to form the wings.
• the wings are preferably circumferentially equidistantly spaced.
• the wings can each be plate-like.
• the wings may each have a respect to the flow direction in the radial direction outwards, that is perpendicular to the flow direction, facing outer narrow side, also referred to as wing outer side, over which the flow body is guided out in the flow channel.
• they can each have two peripherally facing circumferential in relation to the narrow sides large side surfaces.
• the wings can be designed to taper continuously in the flow direction at least in a rear end region in the flow direction.
• the wings may each be formed in a wedge-like manner in the flow direction to form an end edge.
• the wings may have a rear narrow side pointing in the axial direction, that is to say in the flow direction, on which the side surfaces are preferably designed to converge in a wedge-like manner in each case in the flow direction. This can be done, for example, in extension of a conventional flow body on the wings.
• the each located at the free end of the wing rear narrow side can perpendicular to the flow direction, but also beveled so that it forms an angle equal to or less than 90 ° with this.
• the wedge-like taper may be symmetrical with respect to a central mirror symmetry plane parallel to the larger side surfaces.
• An end wedge angle may be less than or equal to 60 °, preferably less than / equal to 30 or less than / equal to 20 °.
• the transitions between the larger side surface and the wedge-like taper are edgeless.
• the filling valve can be provided that at least the surfaces of the flow body and / or the inner wall of the flow channel, on which or over which the fluid flows in the open position of the main valve, at least partially with shallow trough-like depressions and / or with a fine Surface structure are formed coated.
• at least the surfaces of the flow body facing the inner wall of the flow channel are formed with shallow trough-like depressions and / or coated with a surface structure.
• the vanes of the flow body may each be coated with shallow trough-like depressions at least on their circumferentially facing circumferential side surfaces and / or may have the fine surface structure.
• the surface structure may preferably have grooves, of which in particular some, in particular the majority, in particular all, run parallel to one another or at least approximately parallel. In the present case, roughly parallel means that they form an angle to one another of less than 30 °, preferably less than 20 °, preferably less than 10 °.
• at least some of the grooves, in particular at least one group may be arranged to extend in the direction of flow in parallel or at least approximately parallel grooves.
• at least some of the grooves, in particular at least one group may be arranged running transversely to the direction of flow at mutually parallel or at least approximately parallel grooves.
• the majority of the grooves run parallel and / or at least approximately parallel and / or transversely and / or at least approximately transversely to the flow direction.
• the grooves can all extend transversely to or in the direction of flow.
• the surface structure may also be isotropic, that is to say that it is the same and non-directional with respect to the surface.
• the grooves run on the circumferential side surfaces in or approximately in the flow direction.
• the grooves When the grooves are in the flow direction, these resistances reduce the flow of fluid. This can be justified by the fact that the fluid is guided in the direction of flow grooves and that a transverse movement perpendicular to the flow direction, as occurs for example in a vortex formation impeded and thus advantageously a low-noise laminar flow are favored.
• the grooves may be formed like a nozzle. As a result, the fluid can be accelerated.
• the groove geometry can be adapted to the expected speed and the viscosity of the fluid.
• the grooves can act like a nozzle, in that the fluid can be accelerated.
• the surface structure may also have instead of the grooves or in addition to the same in the flow direction extending ribs, in particular so-called riblets. These riblets may be fine ribs, preferably ending on both sides in a sharp rib tip. The riblets may preferably extend in directions as explained with respect to the grooves.
• the local flow velocity can be slowed down or accelerated, and in particular the transverse movement to the flow direction can be at least reduced.
• the grooves on the outer side surfaces extend at least approximately transversely to the flow direction.
• At least approximately transversely here means at an angle of at least 45 °, preferably at least 60 °, preferably at least 80 °.
• the surfaces may have or be coated with a multiplicity of shallow trough-like depressions.
• depressions may also be generally referred to as dents, dimples or dimples. You can usually have a kugelkalottenartigen interior. Such shallow trough-like depressions may in particular be characterized in that they macroscopically have a smooth shape course without any structural measures or discontinuities or discontinuities in the shape course, such as heels, points or elevations.
• These trough-like depressions may preferably be slightly spaced apart from each other or in particular adjacent to each other.
• These dimples or depressions can be arranged adjacent to one another, for example as on the surface of golf balls. In general, such a surface is also referred to as a dulled surface.
• a negative pressure can be exerted on the fluid, making the fluid closer to the surface and making the fluid flow more laminar and hence quieter.
• a volume of a swirling zone of the fluid flow in the flow direction during the demolition of the flow from the flow body can be at least reduced.
• FIG. 1 is a longitudinal sectional view of a filling valve
• FIG. FIG. 2 shows an enlarged detail II according to FIG. 1 with the main valve having a valve disk
• FIG. 3 is a perspective view of the individual
• FIG. 4a is a side view on a narrow side of a
• FIG. 4b is a side view on a narrow side of one of the wings shown in Figure 3,
• FIG. FIG. 5 shows a detail enlargement V according to FIG. 3 and FIG.
• FIGURES 6a and 6b respectively an enlarged detail Via or Vlb according to Figure 3.
• the filling valve 1 shows a longitudinal sectional view of a filling valve 1 for filling a rinse water, not shown here with fluid, not shown here, in particular with water, shown.
• the filling valve 1 has a hydrostatically controllable main valve 2, which, in particular Figure 2 removable, with a flow channel 31 having a valve main body 3, a projecting into the flow passage 31 flow body 41 on the flow channel 31 guided valve disk 4 and an intermediate
• valve disk 4 removable, extend under the immediate axial boundary of the annular groove 43 axially from the same four
• the plate-like wings 45 each have a respect to the flow direction s in the radial direction r to the outside, that is perpendicular to the flow direction s, facing outer narrow side 46, which also as
• Wing outside is called, on, at the
• Figure 4a shows a side view of the outer narrow side 46 ⁇ one of the wings 45 ⁇ one here not further
• valve head of a conventional main valve wherein the associated reference numerals for identifying the invention are marked with a raised apostrophe.
• Flow direction is formed end streamlined, whereby the above-described noise largely can be avoided.
• the rear narrow side 48 is formed extended to a tapered edge 44.
• the flow body 4 in the present case its wings 45, thereby taper continuously in the flow direction in the rear portion of the flow body 4 in the flow direction. The transition takes place in a flow favorable steady, here smoothed profile profile. Further measures to eliminate noise when operating the main valve 2 are based on the
• the outer narrow sides 46 of the wings 45 of the flow body 41 are each provided with a directed surface structure in the form of narrow parallel grooves 491 extending transversely to the flow direction s.
• the flow of the fluid can be guided more strongly and the risk of a transverse flow transversely to the flow direction and thus a noise-generating vortex formation can be reduced.
• Recesses 492 are rounded.
• a pilot valve To its hydrostatic control of the main valve 2 is a commonly referred to as a pilot valve conventional pilot valve 6 upstream of the passage opening 61 via a with a float 62 connected to the water level detection lever 63 is closed, whereby the hydrostatic pressure in a front of the valve plate 4 arranged and increased by the same limited antechamber 34, which in turn the valve plate 4 is pressed with the diaphragm 5 sealingly against the opening 33 of the flow channel 31 ,

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Hydrology & Water Resources (AREA)
• Public Health (AREA)
• Water Supply & Treatment (AREA)
• Mechanical Engineering (AREA)
• Details Of Valves (AREA)
• Lift Valve (AREA)

Priority Applications (1)

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Publications (1)

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Citations (4)

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• 2017
  • 2017-09-06 CN CN201780054663.3A patent/CN110741194B/zh not_active Expired - Fee Related
  • 2017-09-06 WO PCT/EP2017/072379 patent/WO2018046555A1/de active Application Filing

Patent Citations (4)

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