WO2016153409A1 - Limiteur de débit réglable pour un robinet de mélange et procédé pour régler le débit - Google Patents

Limiteur de débit réglable pour un robinet de mélange et procédé pour régler le débit Download PDF

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Publication number
WO2016153409A1
WO2016153409A1 PCT/SE2016/050158 SE2016050158W WO2016153409A1 WO 2016153409 A1 WO2016153409 A1 WO 2016153409A1 SE 2016050158 W SE2016050158 W SE 2016050158W WO 2016153409 A1 WO2016153409 A1 WO 2016153409A1
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WO
WIPO (PCT)
Prior art keywords
flow
actuator
regulating device
seat
flow limiter
Prior art date
Application number
PCT/SE2016/050158
Other languages
English (en)
Inventor
Jacob NORLING
Hans Nilsson
Original Assignee
Ngl Teknik I Linköping Ab
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
Priority claimed from SE1630040A external-priority patent/SE540044C2/sv
Application filed by Ngl Teknik I Linköping Ab filed Critical Ngl Teknik I Linköping Ab
Priority to US15/561,474 priority Critical patent/US10385556B2/en
Priority to EP16769165.8A priority patent/EP3280848B1/fr
Priority to CN201680015722.1A priority patent/CN107407080B/zh
Publication of WO2016153409A1 publication Critical patent/WO2016153409A1/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
    • E03C1/02—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
    • E03C2001/026—Plumbing installations for fresh water with flow restricting devices

Definitions

  • the present invention relates to regulating devices for controlling water flow in a mixing faucet for, for example, kitchens and bathrooms in dwellings.
  • mixing faucets in installations for a specific purpose are provided with a flow limiter that adapts the flow to the field of application.
  • flow limiters are used which control the flow of water to be, for example, 6 1/min for a mixing faucet in a washbasin, whereas the flow for a mixing faucet in a kitchen may be set at 9 1/min and for a mixing faucet in a washroom at 12 1/min.
  • the prior art flow limiters may be in the form of a washer with a predetermined flow area that determines a specific flow.
  • These flow limiters with specific flows are, within this technical field, made with different colours, where a certain colour corresponds to an embodiment with a certain flow (see e.g. patent document EP 1918465).
  • the flow limiter may either be mounted in the spout (outlet) of the mixer or in a jet collector that is mounted at its outlet.
  • One aspect of the present invention is to disclose a flow limiter with adjustable flow for mixing faucets intended for installation in, for example, kitchens, washrooms, bathrooms, showers.
  • the flow limiter may be mounted at the outlet of the mixing faucet, or in a jet collector which is connected to the outlet of the mixing faucet.
  • a further aspect of the invention is to disclose an adjustable flow limiter for eliminating the need of choosing between different flow-limiting means adapted to the field of application when installing or upgrading mixing faucets, as described above.
  • the flow limiter according to the invention comprises a function to achieve constant flow also in case of pressure variations in the incoming water of the mixing faucet.
  • the flow limiter according to the invention may advantageously be installed upstream of a device with means for supply of air to the water flow.
  • the adjustability of the flow is arranged, according to one example, such that a tool, for example a screw driver or bits, are used for rotating an actuator in the flow limiter to positions with predefined maximum flows by the flow limiter. Markings indicate which position to set. A slot for the tool is accessible from the outside of the flow limiter when this is detached and removed from its installation at the outlet of the mixing faucet.
  • a tool for example a screw driver or bits
  • the flow limiter may be arranged for maximizing the flow to three different adjustable values, such as 6 1/min, 9 1/min and 12 1/min.
  • the same flow limiter may be utilized for different fields of application, such as in kitchens, washrooms and in washbasins in bathrooms and toilets, where the choice of maximum flow is made in a simple manner by setting the actuator at the maximum flow that is desired for the specific application.
  • no differently sized flow-regulating washers for different maximum flows need be brought along by the installation engineer when adapting a mixing faucet to its field of application.
  • such washers which are used in the prior art may possess different colours for defining which flow that applies to the flow-regulating washers.
  • a further aspect of the invention is characterized by the method disclosed in independent claim 13.
  • Fig. 1 shows a schematic picture of a first embodiment of a complete flow limiter in its shell according to one aspect of the invention.
  • Fig. 2 shows a perspective view of a seat for parts included in the flow limiter according to Fig. 1.
  • Fig. 3 shows the regulating device of the flow limiter according to Fig. 1 in two perspectives.
  • Fig. 4 shows an actuator for the regulating device according to Fig. 3 in two perspectives.
  • Fig. 5 and Fig. 6 show schematically, in two different perspectives, the components included in the flow limiter according to Fig. 1 , aligned along a symmetry line common to the components.
  • Fig. 7 shows a schematic, exploded view of a second embodiment of the flow limiter. Parts of the regulating device and the actuator are not sectioned.
  • Fig. 8 illustrates the lower part of the regulating device in the second embodiment in a perspective viewed obliquely from below.
  • Fig. 9 shows, for the second embodiment of the flow limiter, components corresponding to those of the schematic figures 5 and 6.
  • Fig. 10a shows pictures in three different positions for the regulating device according to Fig. 7 and constitutes a section which only shows contour lines in the section without showing structures beyond the section. The cutting lines cut right across two diametrically opposite grooves in the regulating device to enhance the clarity of the function.
  • Fig. 1 Ob illustrates the flow limiter as viewed in a plan view from its lower side, where markings for setting the actuator corresponding to the positions of the regulating device according to Fig. 10a are shown side by side. DESCRIPTION OF EMBODIMENTS
  • FIG. 1 and Figure 7 illustrate a couple of examples of a complete flow limiter according to the invention.
  • a flow limiter 1 according to the invention may be installed at the outlet of a mixing faucet for kitchen, washing room, or bathroom fittings.
  • the outlet may be provided at a fixed outlet pipe from such a mixing faucet, or be located upstream of a jet collector arranged close to such an outlet pipe.
  • said limiter is installed in a cylindrical shell 2 belonging to the mixing faucet or a jet collector.
  • a seat 3a, 3b is mounted along a cross section of the shell 2.
  • a plane flange 4 runs.
  • a gasket 5 is applied. This gasket 5 actually constitutes the unit that fixes the seat 3a, 3b inside the shell 2 and determines the position in the axial direction for the seat in relation to the shell 2.
  • the gasket 5 rests on a circumferential shelf 2a running along the inside of the shell 2.
  • the seat 3a, 3b has a centre hole 6 and is further provided with flow channels 7 which are placed annularly outside and around the centre hole 6.
  • the flow channels 7 permit flowing through the seat 3a, 3b.
  • An annular wall 8a, 8b runs around the seat 3a, 3b at its periphery externally of the flow channels 7 placed in a ring.
  • the wall 8a, 8b rises from the base plane of the seat, perpendicular thereto, and opposite to the direction of flow (by direction of flow is meant the flow of the liquid that is to flow through the flow limiter).
  • the figures show a filter head 10a, 10b.
  • the filter head with the designation 10a has a base 1 la.
  • the filter head designated 10b has no such base. Instead this second filter head 10b is, in its lower part, is shaped with a cylindrical ring 1 lb only, which surrounds the wall 8b with press fit.
  • a dome-shaped filter 12 rises.
  • above is meant here opposite to the direction of flow.
  • the dome-shaped filter 12 may be designed in many different ways. By the term dome-shaped is meant all kinds of filter shapes which have a cross-section area decreasing towards the direction of flow.
  • dome-shaped shall also comprise the shape of truncated cones.
  • the top part of the dome- shaped filter 12 is preferably flat, but may have other shapes.
  • the filter 12 is provided with holes or meshes along its surfaces. The holes may be elongated, round or oval. In the centre of the flat top part of the dome-shaped filter 2, there is a circular surface 13a, 13b with or without filter holes.
  • regulating device 20a, 20b is located so as to have its longitudinal axis coinciding with the symmetry axes of the shell 2 and the seat 3a, 3b. Along the axis of the regulating device 20a, 20b, a cylindrical hole 21 runs.
  • the body of the regulating device 20a, 20b has on its outside an envelope surface 22, 43 facing the wall 8a, 8b in the seat 3a and 3b, respectively. Further, the regulating device 20a, 20b is adapted to be displaceable in the axial direction, that is, it may be lifted from its position standing on the seat 3a, 3b and up against the circular surface 13a, 13b of the filter head 10a, 10b. [0022] Between the inside of the wall 8a, 8b in the seat 3a, 3 and the envelope surface 22 43 of the regulating device 20a, 20b, an annular cavity is formed. In this annular cavity, an O- ring 24 is placed in a plane across the symmetry axis of the regulating device 20a, 20b.
  • the O-ring 24 is arranged to make contact, inside the annular cavity, with the inside of the wall 8a, 8b with its periphery and to be displaceable in the axial direction in relation to the inside of the wall 8a in a first version of the flow limiter 1.
  • the periphery of the O-ring 24 is fixed adjacent to the inside of the wall 8b, where instead the envelope surface 43 of the regulating device, in this case the regulating device 20b, is intended to be displaceable in the axial direction in relation to the O-ring.
  • the O-ring 24 is only facing the envelope surface 43 of the regulating device 20b with its circular inside, that is, it is not fixed to its envelope surface.
  • the inner diameter of the O-ring is adapted to be able to slide with its inside along the envelope surface 43 of the regulating device 20b, when the regulating device 20b is displaced in the axial direction.
  • the O-ring 24 is shown to be displaceable in the axial direction relative to the outer wall 8a (variant 1) of the annular cavity and to its inner wall 43 (variant 2), respectively.
  • FIG. 1 a first version of the flow limiter will be described (see Figs. 1, 5, 6).
  • the filter head in this case is formed at its base with a flat annular rim 1 la along the periphery of the filter head.
  • the filter head 10a is connected to the seat 3 a so that its annular rim 1 1a makes contact with the flange 4 of the seat 3a.
  • the annular gasket 5 has a circular slot 5a that faces inwardly and is open inwards towards the centre of the gasket.
  • the gasket 5 is arranged such that the flange 4 of the seat 3a and the rim 1 la of the filter head are inserted into the slot 5a of the gasket. In this way, the rim 1 la of the filter head and the flange 4 are pressed tightly together by the gasket 5 which surrounds said rim 1 la and flange 4 along the circumferences thereof.
  • the gasket 5 will be pressed against said shelf 2a, partly by the water pressure, partly, if desired, by an annular elastic insert that is placed in the empty circular space above the gasket 5 in Figure 1. The insert is pressed against the gasket 5 when the shell 2 is screwed against an outlet pipe for water. This causes the flange 4 of the seat and the rim 1 la of the filter head to make contact with each other by means of press fit.
  • the regulating 20a (fig. 3) is designed as a regulating device adapted to be housed in the filter head 10a. At its base the regulating device 20a has an annular collar 23.
  • the regulate device 20a has an axial, cylindrical hole 21 which is intended to embrace the pin 4 in the filter head 10a, whereby the regulating device 20a will be displaced axially along the symmetry axis of the filter head 10a.
  • An axially longitudinal recess, a slot 27, in the inner wall of the regulating device 20a, in its cylindrical hole 21 is arranged to receive the guide 15, whereby the regulating device 20a is unable to rotate in relation to the filter head 10a around the symmetry axis which is common to the regulating device 20a and the filter head 10a.
  • the O-ring 24 is applied, the function of which will be described in the following.
  • a number of grooves 9 are formed. These grooves 9 are open inwards towards the centre of the seat 3a and face the envelope surface 22 of the regulating device 20a.
  • the grooves 9 run in the axial direction along the wall 8 of the whole seat.
  • the grooves 9 communicate with the flow channels 7.
  • the grooves 9 are equidistant.
  • An important factor according to the aspect of the invention is that the grooves 9 have an increasing cross-section area in the direction of flow.
  • the increasing area of the grooves 9 may, in one embodiment, be achieved by an area which increases in steps (this embodiment being shown in the accompanying figures).
  • the grooves 9 have three corresponding sizes of their cross-section areas.
  • the embodiment of the flow limiter 1 is exemplified by three optional maximum flows. However, there is nothing preventing the provision of more optional maximum flows n.
  • the components which then cooperate to set maximum flows are adapted to handle n optional values of desired optional maximum flows. However, the number of possible grooves is limited by the space.
  • an actuator 30 (see Fig. 4).
  • This actuator 30 may be built up with a base plate 31, at the centre of which a circular cylindrical lifting pin 32 is perpendicularly and axially formed, facing the regulating device 20a and inserted into the hole 21 in the regulating device 20a.
  • the base plate 31 has a smaller diameter on its downstream side facing the seat 3a and is adapted such that the part of the base plate 31 with this smaller diameter is immersed into and connects with sliding fit to the centre hole 6 in the seat 3 a.
  • the diameter of the base plate 31 which faces the regulating device 20a is larger and thus a circumferential seam in the base plate 31 is displayed, such that this will function as a tight-fitting lid when the actuator 30 is placed in the centre hole 6 of the seat 3 a, where the actuator rests on the seat 3 a in that the circumferential seam rests against the seat.
  • the flow limiter 1 is moved out of its shell 2, whereby that surface 33 of the base plate 31 which faces the seat is visible and accessible from the outside of the flow limiter, since the surface 33 projects through the centre hole 6 in the seat 3a.
  • the projecting guide pin 32 is arranged to abut, with its end 32a, against the lower end 14a of the pin 14 in the filter head 10a to lift the filter head 10a somewhat when setting the maximum flow value.
  • the lift of the filter head 10a is enabled by the fact that the base of the filter head 10a, i.e. the rim 1 la, surrounded by the gasket 5, is able to stretch the gasket 5 due to the elasticity thereof.
  • the lifting pin 32 has sliding fit with respect to the inner wall in the cylindrical hole 21 of the regulating device 20a, whereby the actuator 30 is rotatably arranged in relation to the regulating device 20a. Further, the actuator 30 is rotatable around the common axis of the actuating device and the seat, since the base plate 31 of the actuator 30 may be brought to rotate inside the centre hole 6 in the seat 3.
  • an elevated tongue 34a is provided at the base of the guide pin 32 and externally of the cylindrical guide pin 32 and on the base plate 31 .
  • the opposed platforms 28 are flat and are located at a lowest plane in the region of the regulating device 20a inside the collar 23, whereas the first notches 29a have a first depth in the material of the regulating device 20a and the second notches 29b a second depth, larger than the first depth, up in the material of the regulating device 20a.
  • the notches 29a and 29b are shaped to correspond to the shape of the tongue 34a, which means that the tongue 34a may penetrate into the respective notches 29a, 29b, when the actuator 30 is rotated.
  • the diameters of the opposed platforms 28, the first notches 29a and the second notches 29b are displaced 120° in relation to each another around the symmetry axis. This arrangement enables the tongue 34a of the actuator 30 to make contact with the platforms 28, hence displacing the regulating device 20a to a highest position in relation to the seat 3.
  • the actuator 30 is rotated 120°, so that the tongue 34a penetrates into the first notches 29a, the regulating device 20a drops down to an intermediate position.
  • the regulating device 20a drops down to a lowest position, since the tongue 34a penetrates deepest into the interior of the regulating device 20a in this position.
  • the platforms 28 and the notches 29a and 29b, respectively have different depths, the regulating device 20a will be set in the axial direction at one of three different adjustable levels, whereby the regulating device is in its highest position when the tongue 34a makes direct contact with the platforms 28 and in its lowest position when the tongue 34a is in engagement with the deepest of the notches, that is, the second notches 29b.
  • the O-ring 24 In the midmost position, the O-ring 24 will be on a level with a midmost optional cross-section area of the channels, and consequently a largest optional cross-section area of said channels will be formed when the O-ring 24 is in its lowest position, that is, when the actuator 30 has placed the regulating device 20a in its lowest position when the collar 23 thereof rests against the base of the seat 3 a,
  • the grooves 9 may be formed with areas increasing in steps in the direction of flow to clearly bring about defined cross-section areas for the channels which are formed with the groove 9 and the periphery of the O-ring 24 as delimiter.
  • the actuator 30 is fixed in the set position in the direction of rotation in that bosses 35 in the lower side of the base plate 31 are locked against indents 36 on the upper side of the seat 3a close to the centre hole 6.
  • the choice of areas for the channels may be allowed to be determined in case of continuously increasing cross-section areas of the grooves 9 and be chosen solely by locking of the chosen position of the actuator by means of the bosses 35.
  • the end 14c of the pin 14a in the flow limiter 10a makes contact with the end 32a of the guide pin 32.
  • the actuator 30 will move upwards (the counterflow direction), since the bosses 35 slide up on the surface of the seat 3. In this way, the central surface 13 of the filter head will be slightly pressed up.
  • the bosses 35 engage with a set flow position, the bosses 35 are pressed back down against the indent 36 of the seat 3 a.
  • the pressure from the filter head 10a holds the actuator fixed in the set position.
  • the base 1 lb is here formed as a cylindrical ring that surrounds a wall 8b of the seat 3b in assembled position.
  • the wall 8b which extends annularly along the periphery of the seat and is directed opposite the direction of flow from the bottom of the seat 3b, has a shelf 8c facing inwards towards the centre. On this shelf 8c, an O-ring 24 is resting.
  • the annular gasket 5 has a circular slot 5a facing inwards and being open inwards towards the centre of the gasket.
  • the gasket 5 is arranged such that the flange 4 of the seat 3b is inserted in the slot 5a of the gasket.
  • the gasket 5 will be pressed against said shelf 2a in a shell 2 in a manner corresponding to version 1 of the invention.
  • a cylindrical pin 14b extends in the direction of flow.
  • the object of the pin 14b is to guide an actuator 50 in the axial direction, said actuator having a projection 51 in the form of a cylindrical pipe surrounding the pin 14b, whereby the actuator may be displaced axially along the pin 14b.
  • the actuator 50 and its function are described in more detail below.
  • a number of wings 15b extend downwards, that is, in the direction of flow. These wings are adapted to be received by slits 20d formed in the axial direction in the regulating device 20b, so that this device cannot be rotated around the symmetry axis of the flow limiter 1.
  • the regulating device 20b is formed as an annular body with a central hole 21 passing through it in the axial direction.
  • the annular body that is, the regulating device 20b, has a base 42 and an essentially circular-cylindrical wall 43, also designated the envelope surface of the regulating device 20b, along the periphery of the base 42.
  • This circular-cylindrical wall 43 extends from the base 42 upwards in the direction of flow of the liquid which flows through the flow limiter 1.
  • the base 42 faces the base plate 31 of the above-mentioned actuator 50 and is arranged so that the hole 21 receives the projection 51 , which extends upwards towards and partially surrounds the pin 14b of the filter head 10b.
  • the symmetry axes of the regulating device 20b and the actuator 50 coincide.
  • the regulating device 20b exhibits, along the outer side of the wall, the envelope surface 43, grooves 44 formed in the axial direction, that is, arranged along the direction of flow of a water flow. These grooves 44 are open radially outwards and thus face the O-ring 24 which rests on the shelf 8c of the seat 3b.
  • the grooves 44 communicate with the flow channels 7 in the seat 3b.
  • the grooves 44 are equidistant.
  • An important aspect according to the inventive concept is that the grooves 44 have an increasing cross-section area in the direction of flow.
  • the increasing area of the grooves 44 may, in one embodiment, be achieved by an area which increases in steps (this embodiment being shown in the accompanying figures).
  • the flow limiter 1 has three predefined maximum flows, the grooves 44 have thee magnitudes of their cross-section areas corresponding to the maximum flows.
  • the embodiment of the flow limiter 1 is exemplified by three optional maximum flows. However, there is nothing preventing the arrangement of more optional maximum flows n.
  • the components which thus cooperate to set maximum flows are adapted to handle n optional values of the desired optional maximum flows.
  • an actuator 50 is arranged between the seat 3b and the regulating device 20b.
  • This actuator 50 may be configured as the actuator 30 in variant 1 of the invention, with the difference that the actuator 50 in variant 2 of the invention has said tubular projection 51, described above, instead of the so-called guide pin 32.
  • the tongue 34a in version 1 occurs in version 2 of the invention only on one side of the projection 51 , at the base thereof.
  • actuators 30 and 50 are, in principle, the same, that is, with the function of displacing the regulating device in the axial direction.
  • the actuators 30 and 50, respectively, and their cooperation with the regulating device 20a and 20b, respectively, thus show means for this displacement of the regulating device 30, 50.
  • Figure 8 shows that the lower side of the regulating device 20b along its periphery 3 has platforms 45, 46, 47 formed to be plane downwards in order to receive and cooperate with the top part of the tongue 34b.
  • the tongue 34b may be rotated around the axis of the flow limiter 1 and may, in a first position (shown on top in Figs. 9 and 10), make contact with the top of the platform 45 in the regulating device.
  • the channels which are limited by the walls of the grooves 44 and the O-ring 24 have their smallest cross-section area, the flow limiter 1 thus being set at the smallest of the optional flows, marked with position 1 according to Figure 1 Ob.
  • the gap between the grooves 44 and the O-ring has its smallest width. The flow in this position may correspond to 4 to 5 litres/min.
  • the setting of the level of the regulating device 20a, 20b may be achieved by the arrangement of a trapezoidal female thread along the envelope surface of the cylindrical guide pin 32 and the envelope surface of the projection 51, respectively.
  • a corresponding male thread is then formed along the cylindrical hole 21 in the regulating device.
  • a projecting pin in the cylindrical hole 21 may follow the female thread, where the pin may be given stop positions at small ledges in the female thread.
  • a tilting plane is formed in a cut-in spiral along the envelope surfaces of the guide pin 32 and the projection 51, respectively.
  • the last-mentioned pin in the hole 21 may then be adapted to be fixed in a fixed position on ledges arranged and distributed along the tilting plane.
  • the actuator When, in these alternative embodiments, the actuator is rotated, the regulating device 20a, 20b will be displaced in the axial direction by forcing the corresponding male thread, or the pin, in the regulating device 20a, 20b to move axially by the influence of the female thread, or, alternatively, the tilting plane, in the guide pin 32.
  • the bosses 35 lock the actuator to one of the desired fixed positions according to the above.
  • a slot 37 is provided for a tool such as a screwdriver, a wrench or bits, by which the actuator may be rotated with the tool.
  • a tool such as a screwdriver, a wrench or bits, by which the actuator may be rotated with the tool.
  • an arrow- formed marking 38 for a user may indicate the direction for setting an optional maximum flow, where markings 40 corresponding to optional maximum flows may be punched in or provided in some other way in the surface of the seat 3a, 3b which is visible from the outside.
  • Figures 5 and 6 show how the components the filter head 10a, the regulating device 20a, the actuator 30 and the seat 3a are mounted in relation to one another around a symmetry axis common to these components. It can also be realized here that the seat 3a, in one position on the outside of the annular wall 8a, is provided with a furrow 39a. A bulge 40a at a position on the inside of the annular base 1 la of the filter head 10a is intended to engage with the furrow 39a of the seat 3 a. In this way, the filter head 10a and the seat 3 a will be locked to each other with respect to rotation around the symmetry axis.
  • Figure 9 shows how the components filter head 10b, regulating device 20b, actuator 50 and seat 3 b are mounted in relation to one another around a symmetry axis common to these components. It can also be realized here that the seat 3b, in one position on the outside of the annular wall 8b, is provided with a bulge 40b. A furrow 39b at a position at the bottom of the annular base 1 lb of the filter head 10b is intended to engage with the bulge 40b of the seat 3b. In this way, the filter head 10b and the seat 3b will be locked to each other with respect to rotation around the symmetry axis.
  • the water flows out from the lower side of the flow limiter 1 (i.e. the downstream side thereof) further out towards the outlet 41 of the mixing faucet.
  • the outlet of the mixing faucet may, of course, be connected to other accessories, such as to a jet collector where air is mixed into the water jet downstream of the flow limiter 1.
  • FIG. 1 shows that the shell 22, inside which the flow limiter 1 is arranged, is threaded at its top part, which symbolizes that the shell 2 together with the insert in the form of the flow limiter 1 may be connected to and form an outlet of a mixing faucet.
  • the adjustable flow limiter 1 may, according to one aspect of the invention, be integrated with a pressure-sensing guide which maintains the set maximum flow.
  • This function is of value, for example in dwellings with several floors, where the water pressure at a higher floor may be considerably lower than at the ground floor of the dwelling. When such pressure differences prevail, the set maximum flow in a mixing faucet at a higher floor would not correspond to what actually is the case. According to the shown device, this is regulated automatically with the aid of the O-ring 24.
  • the water pressure influences the O-ring 24 with a pressure in the direction of flow such that this is compressed and expands both radially outwards and radially towards its centre. This will cause the O-ring 24, in case of increasing water pressure, to bulge inwards somewhat in the grooves, thus decreasing the cross-section area for the channels through which the water is flowing. In case of decreasing water pressure, the situation is the opposite.
  • a certain expansion of the O-ring may be fixed at a certain defined water pressure, for example 6 bars, in which case the desired maximum flow is obtained at the defined water pressure, where the area of said channels inside the grooves 9, 44 is
  • the flow limiter according to the invention will exhibit both a set maximum flow and automatic correction for varying water pressure in supply pipes for water to the mixing faucet provided with a flow limiter 1 according to the invention.
  • An additional advantage of the flow limiter according to the above is that the dome-shaped filter 12 has an extension in the axial direction. This means that scrap and dirt collected in the filter 12 are first deposited on the lowest level and from there build up a layer of dirt outside the filter 12, and this layer may in course of time become thick and more or less stop the flow of water. However, it may take a long time before the layer of dirt completely covers the whole filter 12 because of the axial extension of the filter. In most filters according to the prior art, filters are used which have an extension across the flow, whereby stop of flow occurs even at a thin layer of dirt above the filter surface.
  • the invention is characterized in that it also comprises a method as follows: A method for setting a maximum flow in a mixing faucet provided with a flow limiter 1 for water which may flow through the mixing faucet, wherein the flow limiter across an outlet of the mixing faucet has a seat 3a, 3b provided with grooves 9, 44 which have an increasing cross-section area in a direction of flow for the water, wherein the method is characterized by the following steps: an actuator 30, 50 is moved to one of a number of optional fixed positions for a maximally allowed flow through the mixing faucet, the actuator 30, 50 thereby forcing a regulating device 20a, 20 to be displaced along the grooves 9, 44 and be locked at a position that sets channels between the grooves 9, 44 and the regulating devices 20a, 20b to be given a total flow area that allows a maximum flow corresponding to the flow at which the actuator is set.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
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  • Water Supply & Treatment (AREA)
  • Lift Valve (AREA)

Abstract

La présente invention concerne un limiteur de débit (1) pour régler un débit maximum d'eau à une sortie d'un robinet de mélange. Le limiteur de débit dans la direction axiale comprend un siège (3a, 3b) qui, le long de sa périphérie, est pourvu d'une paroi annulaire (8a, 8b) et possède des canaux de débit (7) agencés à l'intérieur et le long de ladite paroi (8a, 8b), un actionneur (30, 50) qui est agencé de manière rotative sur le siège (3a, 3b), un dispositif de régulation (20a, 20b) sous forme de corps avec une surface d'enveloppe circonférentielle (22, 43) qui fait face à l'intérieur de ladite paroi annulaire (8a, 8b). L'actionneur (30, 50) comprend des moyens (34a, 34b) pour déplacer le dispositif de régulation (20a, 20b) dans la direction axiale. Une cavité annulaire est formée entre des parois formées par la surface d'enveloppe (22, 43) du dispositif de régulation et la paroi (8a, 8b) du siège, un joint torique (24) agencé dans la cavité annulaire. L'une des parois (43, 8a) de la cavité annulaire présente des rainures ouvertes (9, 44) qui s'étendent axialement, avec une superficie de section transversale augmentant dans la direction de débit, le joint torique (24) dans son plan étant conçu pour se relier de manière coulissante auxdites rainures (9, 44) et pour adopter l'une des positions prédéterminées dans la direction axiale le long desdites rainures (9, 44) lors de la rotation de l'actionneur (30, 50). Ladite position correspond à un débit maximum déterminé par une superficie de section transversale pour des canaux qui est limitée par le joint torique (24) et les parois des rainures (9, 44) dans le plan du joint torique (24).
PCT/SE2016/050158 2015-03-23 2016-03-01 Limiteur de débit réglable pour un robinet de mélange et procédé pour régler le débit WO2016153409A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US15/561,474 US10385556B2 (en) 2015-03-23 2016-03-01 Adjustable flow limiter for a mixing faucet and a method for adjusting the flow
EP16769165.8A EP3280848B1 (fr) 2015-03-23 2016-03-01 Limiteur de débit réglable pour un robinet de mélange et procédé pour régler le débit
CN201680015722.1A CN107407080B (zh) 2015-03-23 2016-03-01 用于混合水龙头的可调节的流量限制器及调节流量的方法

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE1530036-1 2015-03-23
SE1530036 2015-03-23
SE1630040-2 2016-02-29
SE1630040A SE540044C2 (sv) 2015-03-23 2016-02-29 Ställbar flödesbegränsare för en blandare och ett förfarandeför att ställa flödet

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WO2016153409A1 true WO2016153409A1 (fr) 2016-09-29

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018166644A1 (fr) * 2017-03-13 2018-09-20 Neoperl Gmbh Unité d'insertion sanitaire
CN110862115A (zh) * 2019-12-27 2020-03-06 西安西热水务环保有限公司 一种利用限流翼片实现正流量大于逆流量的双流量水帽

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GB1105795A (en) * 1965-08-09 1968-03-13 Walter Rotter Improvements in or relating to throttling devices for water tap valves
US4189099A (en) * 1978-08-02 1980-02-19 L. R. Nelson Corporation Spray head
DK200400093U3 (da) * 2004-03-12 2004-04-13 Aqua Perlator I S V Erik Henni Trinløs justerbar vandsparer til brusere
US20090008478A1 (en) * 2005-01-25 2009-01-08 Neoperl Gmbh Two-Part Flow Regulator, Jet Regulator or Backflow Preventer Having a Snap-In Joint Between the Parts
JP2011052530A (ja) * 2009-08-03 2011-03-17 Toyo Keiki Co Ltd 流体節約喚起器
US20110303309A1 (en) * 2008-09-01 2011-12-15 Klaus Prenzler Regulating device for a water outflow, particularly from sanitary fittings
US20130075496A1 (en) * 2010-05-27 2013-03-28 Neoperl Gmbh Sanitary fitted element for a water outlet

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1105795A (en) * 1965-08-09 1968-03-13 Walter Rotter Improvements in or relating to throttling devices for water tap valves
US4189099A (en) * 1978-08-02 1980-02-19 L. R. Nelson Corporation Spray head
DK200400093U3 (da) * 2004-03-12 2004-04-13 Aqua Perlator I S V Erik Henni Trinløs justerbar vandsparer til brusere
US20090008478A1 (en) * 2005-01-25 2009-01-08 Neoperl Gmbh Two-Part Flow Regulator, Jet Regulator or Backflow Preventer Having a Snap-In Joint Between the Parts
US20110303309A1 (en) * 2008-09-01 2011-12-15 Klaus Prenzler Regulating device for a water outflow, particularly from sanitary fittings
JP2011052530A (ja) * 2009-08-03 2011-03-17 Toyo Keiki Co Ltd 流体節約喚起器
US20130075496A1 (en) * 2010-05-27 2013-03-28 Neoperl Gmbh Sanitary fitted element for a water outlet

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018166644A1 (fr) * 2017-03-13 2018-09-20 Neoperl Gmbh Unité d'insertion sanitaire
CN110268120A (zh) * 2017-03-13 2019-09-20 纽珀有限公司 卫生插入单元
EP4074903A1 (fr) * 2017-03-13 2022-10-19 Neoperl GmbH Unité d'insertion sanitaire
CN110862115A (zh) * 2019-12-27 2020-03-06 西安西热水务环保有限公司 一种利用限流翼片实现正流量大于逆流量的双流量水帽
CN110862115B (zh) * 2019-12-27 2024-03-01 西安西热水务环保有限公司 一种利用限流翼片实现正流量大于逆流量的双流量水帽

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