EP3517211B1 - Shower head with pressure relief valve - Google Patents

Shower head with pressure relief valve Download PDF

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Publication number
EP3517211B1
EP3517211B1 EP19152805.8A EP19152805A EP3517211B1 EP 3517211 B1 EP3517211 B1 EP 3517211B1 EP 19152805 A EP19152805 A EP 19152805A EP 3517211 B1 EP3517211 B1 EP 3517211B1
Authority
EP
European Patent Office
Prior art keywords
valve
valve body
shower head
overpressure
shower
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.)
Active
Application number
EP19152805.8A
Other languages
German (de)
French (fr)
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EP3517211A1 (en
Inventor
Fabian Melle
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.)
Hansgrohe SE
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Hansgrohe SE
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Publication date
Application filed by Hansgrohe SE filed Critical Hansgrohe SE
Publication of EP3517211A1 publication Critical patent/EP3517211A1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3006Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being actuated by the pressure of the fluid to be sprayed
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47KSANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K3/00Baths; Douches; Appurtenances therefor
    • A47K3/28Showers or bathing douches
    • A47K3/281Accessories for showers or bathing douches, e.g. cleaning devices for walls or floors of showers
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47KSANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K3/00Baths; Douches; Appurtenances therefor
    • A47K3/28Showers or bathing douches
    • A47K3/283Fixed showers
    • A47K3/286Emergency showers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/18Roses; Shower heads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/085Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
    • B05B12/087Flow or presssure regulators, i.e. non-electric unitary devices comprising a sensing element, e.g. a piston or a membrane, and a controlling element, e.g. a valve
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/65Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits
    • B05B15/652Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits whereby the jet can be oriented
    • B05B15/654Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits whereby the jet can be oriented using universal joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/18Roses; Shower heads
    • B05B1/185Roses; Shower heads characterised by their outlet element; Mounting arrangements therefor

Definitions

  • the invention relates to a shower head with a shower head housing, a fluid inlet into the shower head housing, a shower jet outlet from the shower head housing, a fluid guide in the shower head housing from the fluid inlet to the shower jet outlet, and a pressure relief valve coupled to the fluid guide with a movable valve body which is located at an overpressure in the Fluid guide moved from a normal position to an overpressure position.
  • overpressure means a pressure that is above a normal pressure range, in which the fluid pressure in the fluid guide in normal operation when the shower head is used as intended and functions properly, taking into account normal pressure fluctuations, e.g. lies in an upstream fluid supply.
  • these shower heads have a pressure relief valve which responds to an overpressure in the fluid guide in the shower head housing in order to avoid prolonged operation of the shower head in such a pressure condition.
  • the pressure relief valve is pressure-coupled to the fluid guide, that is to say coupled in terms of pressure technology, so that the excess pressure in the fluid guide acts on the pressure relief valve and moves its movable valve body into the pressure relief position.
  • the valve body is in its normal position, ie its position intended for the normal shower operation of the shower head.
  • a ring provided with an annular groove, preferably with a substantially V-shaped cross section, is provided between an outlet-side spray disc, which is provided in the usual manner with a plurality of spray outlet openings, and an adjacent part of the shower head housing in a free annular gap, the additional outlet cross section is formed in the form of openings arranged at the bottom of the annular groove, which are closed by an elastic sealing ring, such as an O-ring, which expands elastically in the fluid guide in the shower head housing when there is excess pressure, thereby opening up the otherwise closed openings.
  • an elastic sealing ring such as an O-ring
  • a pressure relief valve is provided with a valve body which is arranged centrally and axially movable on the shower head and in the normal position is approximately flush with a spray disc, while it protrudes somewhat in the pressure position.
  • the pressure relief valve has a leakage opening leading from the fluid guide to the jet disc, which is closed in the normal position by the movable valve body and released when an overpressure occurs.
  • the valve body is biased into its closed position by means of a biasing spring.
  • the invention is based on the technical problem of providing a shower head of the type mentioned at the outset, which offers improvements over the prior art mentioned above, in particular with regard to functionality with regard to the overpressure behavior.
  • the invention solves this problem by providing a shower head with the features of claim 1.
  • the valve body in the overpressure position is designed to be self-retaining and operated by the user and can be moved back into the normal position.
  • self-holding is the property of Valve body means that if it has reached its overpressure position due to an overpressure in the fluid guide, it will remain in this position even if the overpressure in the fluid guide no longer exists.
  • the return movement of the valve body from its overpressure position to its normal position is user-operated and therefore not automatic. This gives the user the opportunity to first clarify the cause of the excess pressure and, if necessary, to clean the shower head, in particular the shower jet outlet, if the excess pressure is caused by dirt particles and / or calcifications, as can often be found especially at the shower jet outlet. The user can then move the valve body back from its overpressure position to its normal position, so that the shower head is again in its normal operating state.
  • the valve body acts in a position-dependent manner on a passage cross section of the fluid guide, wherein it reduces the passage cross section in the overpressure position compared to the normal position.
  • the pressure relief valve does not provide for the release of an additional pressure relief opening or the corresponding increase in the overall fluid outlet cross section of the shower head in the case of overpressure compared to normal operation, but for a reduction in the passage cross section of the fluid guide from the fluid inlet to the shower spray outlet. This reduces the volume flow of fluid passed through the shower head.
  • the volume flow reduction can be so strong, for example, that the fluid only exits the shower head in individual drops. This prompts the user to intervene or maintain the shower head.
  • the invention reliably and reliably avoids in each of its aspects mentioned that the shower head is operated in the shower head housing with excessive pressure for a long time.
  • the shower jet outlet contains a plurality of jet outlet openings
  • the fluid guide has a distribution chamber upstream of the jet outlet openings.
  • the valve body acts on the passage cross section of the fluid guide between the fluid inlet and the distribution chamber. The valve body can thereby reduce the passage cross section of the fluid guide at this point, if an overpressure occurs in the fluid guide, whereby the volume flow of fluid into the distribution chamber can be reduced. This allows the overpressure in the distribution chamber to be reduced via the jet outlet openings and the reduced volume flow to indicate to the user that there is an overpressure case.
  • the valve body is cylindrical and movable in the axial direction in the shower head housing and has a radially projecting ring collar with at least one valve passage opening.
  • the fluid guide comprises a valve chamber in which the valve body with its ring flange is guided in an axially movable manner, as well as at least one valve inlet opening opening into the valve chamber and at least one valve outlet opening opening out of the valve chamber. With its ring collar, the valve body reduces a passage cross section of the at least one valve outlet opening in the overpressure position compared to the normal position.
  • the ring collar thus serves in this embodiment as a kind of movable valve closing body, which leaves the at least one valve outlet opening free when the valve body is in its normal position, and the valve outlet opening at least partially, i.e. completely or partially, blocked or closed when the valve body is in the overpressure position.
  • the at least one valve inlet opening extends axially, as does the at least one valve passage opening. In the normal position of the valve body, the valve passage opening is aligned with the valve inlet opening. This represents a constructively and fluidically advantageous realization for the fluid guidance in this area.
  • the shower head in the shower head housing contains a hollow cylindrical valve seat body, on which the valve body is held in a guided manner and in which the valve chamber is located.
  • the at least one valve outlet opening extends with a radial directional component, optionally additionally with an axial directional component, through a cylinder jacket section of the valve seat body.
  • the shower head contains a jet disk forming the shower jet outlet, and the valve body is located on the same side of the shower head housing as the jet disk. Since the spray disc side of a shower head usually represents that side of the shower head which faces the user in operation or which he can easily see in any case and which is easily accessible for him, this measure has the advantage that the user has the valve body and its respective current position recognize it well and if necessary, e.g. for moving back from its overpressure position to its normal position, can be easily handled.
  • the valve body projects from the outside of the jet disk in the overpressure position, while it does not project from the outside of the jet disk in the normal position, i.e. is aligned with it or alternatively is set back relative to it.
  • the user can very easily recognize from the position of the valve body relative to the spray disc whether there is an overpressure drop or not.
  • the pressure relief valve comprises a magnet arrangement which holds the valve body in the normal position by a magnetic force, the magnetic force being able to be overcome by an overpressure in the fluid guide, but not by the pressure forces of any normal fluid pressure fluctuations in the fluid guide in the normal, error-free manner Operation of the shower head.
  • the strength of the magnetic force decreases with increasing distance of the valve body from the normal position to an irrelevance value in the overpressure position.
  • the term irrelevance value means that the value of the magnetic force in the overpressure position is zero or in any case so low that the magnetic force is then no longer able to remove the valve body automatically by overcoming the usual frictional forces and any remaining fluid pressure forces To move the overpressure position back to its normal position when the overpressure drop is no longer present, ie the overpressure in the fluid guide has been reduced.
  • the magnetic force has no relevance for the return movement of the valve body from its overpressure position to the normal position. The user can therefore decide for himself when he wants to move the valve body back to its normal position, for which he accordingly can operate. In the normal position, the valve body then holds again through the action of the magnetic force.
  • the shower head shown comprises a shower head housing 1, a fluid inlet 2 into the shower head housing 1, a shower jet outlet 3 from the shower head housing 1, a fluid guide 4 in the shower head housing from the fluid inlet 2 to the shower jet outlet 3 and a pressure relief valve 5.
  • the pressure relief valve 5 is pressure-coupled to the fluid guide 4, ie a fluid pressure which prevails in the fluid guide 4 in a corresponding area to which the pressure relief valve 5 is operatively coupled acts on the pressure relief valve 5 1 and 2 built-in pressure relief valve 5 is in the 3 to 7 illustrated in more detail. It is understood that this pressure relief valve can also be used in other shower heads.
  • the pressure relief valve 5 contains a movable valve body 6 which, in the event of an overpressure in the fluid guide 4, changes from a normal position N S , as shown in FIGS 3 to 5 is shown, moved to an overpressure position U S , as in the 6 and 7 and in the installed state of the 1 and 2 is shown.
  • the valve body 6 is designed such that it remains self-holding in the overpressure position U S and can be moved back to the normal position N S when operated by the user. This means that the valve body 5, if it has assumed its overpressure position due to an overpressure in the fluid guide 4, remains in the overpressure position U S until the user moves it back into the normal position N S , even if in the meantime the overpressure in the fluid guide 4 is no longer available.
  • the pressure relief valve 5 has a magnet arrangement 7 for this purpose, which holds the valve body 6 in the normal position N S by a magnetic force F M that can be overcome by an excess pressure from the fluid guide 4, the strength of the magnetic force F M also increasing distance of the valve body 6 from the normal position N S to an irrelevance value in the overpressure position U S decreases.
  • the pressure relief valve contains, instead of such a magnet arrangement, another conventional holding force source, which acts on the valve body in the normal position N S with a holding force which can be overcome by the excess pressure in the fluid guide 4 and which no longer acts on the valve body 6 in the pressure position U S, or in any case is not so strong that it could move the valve body 6 back to the normal position N S even when the excess pressure is no longer present.
  • another conventional holding force source which acts on the valve body in the normal position N S with a holding force which can be overcome by the excess pressure in the fluid guide 4 and which no longer acts on the valve body 6 in the pressure position U S, or in any case is not so strong that it could move the valve body 6 back to the normal position N S even when the excess pressure is no longer present.
  • the magnet arrangement 7 is formed by two interacting magnets 7a, 7b, of which a first magnet 7b is arranged in or on the valve body 6 and a second magnet 7a in or on a part of the pressure relief valve 5 which remains stationary.
  • the two magnets 7a, 7b can, for example, be permanent magnets and provide the magnetic force F M as a magnetic attraction between the two magnets 7a, 7b, which, as usual, rapidly decreases in strength with increasing distance between the two magnets 7a, 7b.
  • the magnets 7a, 7b are suitably chosen so that in the normal position N S of the valve body 6, in the they have their smallest distance, the magnetic force F M in the strength required to hold the valve body 6 in its normal position N S provide, while the magnetic force F M in the overpressure position U S of the valve body 6, in which the two magnets 7a, 7b their maximum Have distance, has practically dropped to zero or in any case so far that it is no longer able to move the valve body 6 back to the normal position N S against any frictional forces and any fluid pressure forces that may be present.
  • valve body 6 acts in a position-dependent manner on a passage cross section D Q of the fluid guide 4 in such a way that it reduces the passage cross section D Q in the overpressure position U S compared to the normal position N S.
  • the valve body 6 is cylindrical and movable in the axial direction A R in the shower head housing 1, the axial direction A R as usual being understood to mean the direction parallel to a longitudinal center axis of the cylindrical valve body 6, as well as its opposite direction.
  • the valve body 6 has a radially projecting ring collar 8 with at least one valve passage opening 9.
  • the fluid guide 4 comprises a valve chamber 10, in which the valve body 6 is movably guided with its ring collar 8.
  • the fluid guide 4 has at least one valve inlet opening 11 opening into the valve chamber 10 and at least one valve outlet opening 12 opening out of the valve chamber 10.
  • the valve body 6 With its ring collar 8, the valve body 6 reduces the passage cross section D Q of the at least one valve outlet opening 12 when the valve body 6 is in the overpressure position U S , compared to the operating state when the valve body 6 is in the normal position N S. In other words, in the example shown, the valve body 6 reduces the passage cross section D Q of the fluid guide 4 in the region of the at least one valve outlet opening 12. In alternative embodiments, the valve body acts at another point on the fluid guide 4 on its passage cross section D Q in the sense of a reduction when excess pressure occurs a.
  • the reduction can be that the passage cross-section D Q is completely blocked, ie reduced to zero, or alternatively to a desired other reduced cross-sectional value between the value zero and a maximum value that the Passage cross section D Q has at the relevant point of the fluid guide 4 when the valve body 6 is in the overpressure position U S.
  • valve chamber 10 the at least one valve inlet opening 11 and the at least one valve outlet opening 12 can e.g. all be formed on the pressure relief valve 5.
  • the valve chamber 10 is of annular cylindrical shape, alternatively it can have another shape, e.g. a fully cylindrical shape.
  • a plurality of valve inlet openings 11 and valve through openings 9 are provided, e.g. each arranged equidistantly in the circumferential direction.
  • both the at least one valve inlet opening 11 and the at least one valve passage opening 9 purely axial, ie parallel to the axial direction A R, wherein the at least 9 in alignment with the at least extends to a valve passage opening a valve inlet port 11 when the valve body 6 in the normal position N S is located.
  • the at least one valve inlet opening and / or the at least one valve passage opening runs at least in sections at an angle or perpendicular to the axial direction A R. The flush transition from the respective valve inlet opening 11 to the respective valve passage opening 9 enables the fluid to pass through the at least one valve inlet opening 11 into the valve chamber 10 through the at least one valve passage opening 9 in the normal position N S of the valve body 6.
  • valve body 6 lies in the normal position N S with its respective valve passage opening 9 with no or at most a short distance from the respective valve inlet opening 11 in an associated end region of the valve chamber 10.
  • the valve body 6 with its ring collar 8 is located in the other end region of the valve chamber 10 and consequently at a noticeable distance from the valve inlet opening (s) 11, so that the one or more valve inlet openings 11 are not blocked off by the valve body 6 even in the event of overpressure.
  • the pressure relief valve 5 contains a hollow cylindrical valve seat body 13, on which the valve body 6 is held and in which is the valve chamber 10.
  • the at least one valve outlet opening 12 with a radial directional component extends outward through a cylinder jacket section 13a of the valve seat body 13.
  • the valve seat body 13 is made from several assembled parts, in alternative versions it is made in one piece. In the example shown, it is provided in an end region with an external thread 14 with which it can be screwed into an internal thread of an articulated sleeve 15 of the shower head 1, as shown. Furthermore, in the example shown, the valve seat body 13 has an external thread 16 in an axially central region, to which a shower outlet part 1 a of the shower head housing 1 is screwed. In alternative embodiments, the valve seat body 13 can be connected to the shower head housing in another conventional manner.
  • the shower outlet part 1a is made in a flat shower design, which means that the shower head is 1 and 2 Particularly suitable as a flat overhead shower, as is known per se for use in sanitary shower rooms or shower facilities.
  • the shower outlet part 1 a is articulated via a ball joint 16 to a shower head connection part 1 b, via which the shower head can be connected to a fluid supply and which forms the fluid inlet 2.
  • the shower head is not configured in this flat design, but of another conventional design, for example a bell-shaped design.
  • a sieve element 17 is optionally arranged as a dirt / particle sieve in the fluid guide section of the shower head connection part 1b between the fluid inlet 2 and the at least one valve inlet opening 11.
  • the shower outlet part 1a has, apart from the pressure relief valve 5, a structure which is known per se and which ends on the fluid outlet side with a jet disk 18 which forms the shower jet outlet 3 and which is provided with one or usually a plurality of jet outlet openings 19 which, in a predeterminable configuration, have a circular or square shape, for example Exit surface of the jet disc 18 are arranged away.
  • the fluid guide 4 as in the example shown, has a distribution chamber 20 upstream of the jet outlet openings 19, from which the jet outlet openings 19 open and into which the at least one valve outlet opening 12 opens.
  • the valve body 6 thus acts on the passage cross section D Q of the fluid guide 4 between the fluid inlet 2 and the distribution chamber 20, here specifically between the valve chamber 10 and the distribution chamber 20.
  • valve body 6 is located on the same side of the shower head housing 1 as the spray disc 18 forming the spray spray outlet 3. In the exemplary embodiment shown, the valve body 6 is specifically located in a central region of the spray disc 18. In alternative embodiments, the valve body 6 is in relation to the spray disc 18 arranged off-center.
  • the valve body 6 projects from the outside of the jet disk 18 in the overpressure position U S.
  • the shower head is in the 1 and 2 shown.
  • the valve body 6 does not protrude from the outside of the spray disc 18, ie it is positioned in a recessed manner in the interior of the shower head housing 1 or is essentially flush with the outside of the spray disc 18.
  • the latter is implemented in the example shown, ie in the normal position N S, an outer side 6a of the valve body 6 is aligned with an outer side 13b of the valve seat body 13, which in turn is essentially flush with the outside of the jet disk 18.
  • a center pin 13c is formed on the valve seat body 13, which delimits the annular valve chamber 10 radially inward and can act as an additional guide for the valve body 6, for which purpose the valve body 6 in an associated section 6c axially between its ring collar 8 on the foot side and a head section 6b, which ends with the outside 6a, is designed to be correspondingly hollow-cylindrical.
  • a pressure channel 21 is formed which is in fluid communication with the valve chamber 10 and leads axially forward to an end face 22 of the valve body head section 6b.
  • the pressure channel 21 contains one or more radial gaps running axially or with an axial direction component, which e.g. can each be formed by an axial or axial groove component on the outside of the center pin 13c and / or on the inside of the hollow cylindrical valve body section 6c.
  • a continuous annular gap in the circumferential direction can be provided as the pressure channel 21, or spacing webs running axially or with an axial direction component can be provided on at least one of these two opposing surfaces, between which there are intermediate spaces forming the pressure channel 21.
  • the center pin 13c simultaneously serves to hold the second magnet 7a, while the first magnet 7b is arranged in the head section 6b of the valve body 6.
  • the magnets 7a, 7b can be inserted there into corresponding bores, which can be closed, for example, by the center pin 13c with a sealing screw 23 and, on the part of the valve body 6, with a cover cap 24 that defines the outside 6a of the valve body 6.
  • these magnetic insert bores can remain unlocked or be closed in some other way.
  • the respective valve outlet opening 12 opens out of the valve chamber 10 in a lower region in the figures and extends radially outwards and axially forwards or outwards, i.e. downwards in the figures, through the relevant cylinder jacket section 13a of the valve seat body 13, which in this area e.g. may be tapered as shown.
  • a plurality of valve outlet openings 12 are provided equidistantly distributed in the circumferential direction.
  • the number of valve outlet openings 12 may correspond to the number of valve through openings 9 or be different from this.
  • valve body 6 with its ring collar 8 is located on the inner or rear, ie upper, end area of the valve chamber 10 in the figures, the respective valve passage opening 9 being flush with the associated valve inlet opening 11 and the pressure channel 21 opening in this area.
  • the valve outlet openings 12 are completely released without the valve body 6 having the passage cross section D Q determined by the overall configuration of the shower head Fluid guide 4 limited.
  • fluid supplied via the fluid inlet 2 consequently reaches the shower jet outlet 3 via the fluid guide 4, where it emerges as a corresponding shower jet. More precisely, the fluid flows here via the valve inlet openings 11 and the valve passage openings 9 into the valve chamber 10 and from there via the valve outlet openings 12 into the distribution chamber 20, from where it distributes itself onto the jet outlet openings 19.
  • an overpressure occurs in the fluid guide 4, for example in the distribution chamber 20, this leads to a corresponding overpressure in the valve chamber 10 of the overpressure valve 5 pressure-coupled to the fluid guide 4.
  • the overpressure in the valve chamber 10 also pushes the fluid into the pressure channel 21, as a result of which presses the fluid with the corresponding overpressure against the end face 22 of the valve body 6.
  • the magnet arrangement 7 is designed in such a way that the magnetic force F M it provides in the normal position N S of the valve body 6 is smaller than the oppositely acting fluid overpressure force that the fluid under pressure on the valve body 6 exerts on its end face 22.
  • valve body 6 detaches itself from the normal position N S against the magnetic force F M and moves axially forward or outward following the fluid overpressure force, ie downwards in the figures, up to its overpressure position U S , which is opposite the normal position N S Represents end position of the valve body 6.
  • This extension movement of the valve body 6 against the magnetic force F M and against any frictional forces and against the ambient pressure acting on the outside 6a of the valve body 6 can additionally be supported by an entraining effect of a residual flow of fluid in the valve chamber 10 if the system is designed accordingly.
  • the pressure relief valve 5 also responds when the shower head is connected to a fluid supply whose fluid supply pressure is greater than that for which the shower head is designed.
  • the valve body 6 In the overpressure position U S, the valve body 6 with its ring collar 8 completely or alternatively partially blocks the respective valve outlet opening 12, as is shown, for example, in FIGS Fig. 2 and 5 can be seen.
  • the valve body 6 in this overpressure position U S reduces the passage cross section D Q of the fluid guide 4 at this point to zero or in any case to a lower value than the effective passage cross section of the fluid guide 4 in normal operation.
  • the consequence of this is that the volume flow of the fluid at the shower outlet 3 is correspondingly reduced. This can easily be recognized by the user by the fact that the shower jet stops or the shower head at the shower outlet 3 only drips.
  • the user can recognize the overpressure case that has occurred because the valve body 6 has moved into its extended overpressure position U S and therefore projects forward or outward from the outside of the jet disk 18.
  • the valve body 6 can be made at least in its area protruding from the jet disk 18 in a color contrasting from the surrounding jet disk area. This can make it even easier for the user to recognize that the pressure relief valve 5 has responded.
  • the fluid can no longer flow or at least no longer flow into the distribution chamber 20 in a significant amount, so that any excess pressure initially present there due to the escape of the remaining fluid Can remove shower outlet 3.
  • the user can now take the necessary measures For example, clean the shower head as a whole or at least at the shower outlet 3, ie eliminate the cause of the overpressure that has occurred.
  • the valve body 6 initially remains in its overpressure position U S , since the two magnets 7a, 7b are now so far apart that they no longer exert any or any significant magnetic force on the valve body 6, ie the magnet arrangement 7 is not able to withdraw the valve body 6 automatically into the normal position N S.
  • valve body 6 After the user has eliminated the cause of the excess fluid pressure, he pushes the valve body 6 back into its normal position N S , for example by pressing with a finger against the outside 6a of the valve body 6.
  • the valve body 6 in the example shown forms with its head section 6b a valve pin, which the user can push back from the extended overpressure position U S to the retracted normal position N S.
  • the magnet arrangement 7 then holds the valve body 6 in its normal position N S with its magnetic force F M.
  • the valve body 6 in the normal position N S completely clears the passage cross section D Q of the fluid guide 4, in the example shown by completely clearing the valve outlet openings 12. The shower head is thus ready for use again.
  • the invention provides a shower head with an advantageous pressure relief valve function. Damage to the shower head can be avoided by the integrated pressure relief valve.
  • the pressure relief valve can ensure a reduction in the fluid volume flow, so that the excess pressure can be reduced by the remaining leakage of fluid from the shower head, preferably via the shower jet outlet, without fluid escaping at the pressure relief valve itself.
  • the user can easily recognize an overpressure case, eliminate the causes of the overpressure and then bring the valve body back from its overpressure position to its normal position under its own control.
  • the shower head according to the invention can be used both for any types of sanitary showers and for non-sanitary showers, if and to the extent There is a need to protect the shower head from any fluid overpressure in the fluid guide.

Description

Die Erfindung bezieht sich auf einen Brausekopf mit einem Brausekopfgehäuse, einem Fluideinlass in das Brausekopfgehäuse, einem Brausestrahlaustritt aus dem Brausekopfgehäuse, einer Fluidführung im Brausekopfgehäuse vom Fluideinlass zum Brausestrahlaustritt und einem an die Fluidführung druckangekoppelten Überdruckventil mit einem beweglichen Ventilkörper, der sich bei einem Überdruck in der Fluidführung von einer Normalstellung in eine Überdruckstellung bewegt.The invention relates to a shower head with a shower head housing, a fluid inlet into the shower head housing, a shower jet outlet from the shower head housing, a fluid guide in the shower head housing from the fluid inlet to the shower jet outlet, and a pressure relief valve coupled to the fluid guide with a movable valve body which is located at an overpressure in the Fluid guide moved from a normal position to an overpressure position.

Es ist bei derartigen Brauseköpfen bekannt, dass nach gewisser Betriebszeit der Fluiddruck im Brausekopfgehäuse aufgrund von Schmutzpartikeln und/oder Verkalkungen, die insbesondere am Brausestrahlaustritt zu Querschnittsverengungen oder gar Verstopfungen von Strahlaustrittsöffnungen führen können, in unerwünschter Weise über einen normalen Fluidbetriebsdruckbereich hinaus ansteigen kann, d.h. es tritt ein Überdruckzustand auf. Dieses Problem tritt z.B. verstärkt bei Brauseköpfen auf, die am Brausestrahlaustritt Strahlaustrittsöffnungen von vergleichsweise kleinem Durchmesser aufweisen und/oder die in Sanitärbrausen mit relativ kalkhaltigem Wasser verwendet werden. Mit Überdruck ist hierbei vorliegend ein Druck gemeint, der über einem Normaldruckbereich liegt, in welchem der Fluiddruck in der Fluidführung im Normalbetrieb bei bestimmungsgemäßem Gebrauch des Brausekopfs und fehlerfreier Funktionsweise desselben unter Berücksichtigung üblicher Druckschwankungen z.B. in einer vorgelagerten Fluidzuführung liegt.With such shower heads it is known that after a certain operating time the fluid pressure in the shower head housing can rise undesirably beyond a normal fluid operating pressure range due to dirt particles and / or calcifications, which in particular can lead to cross-sectional constrictions or even blockages of jet outlet openings at the shower jet outlet, i.e. an overpressure condition occurs. This problem occurs e.g. intensified in shower heads which have jet outlet openings of comparatively small diameter at the shower jet outlet and / or which are used in sanitary showers with relatively calcareous water. In the present case, overpressure means a pressure that is above a normal pressure range, in which the fluid pressure in the fluid guide in normal operation when the shower head is used as intended and functions properly, taking into account normal pressure fluctuations, e.g. lies in an upstream fluid supply.

Daher verfügen diese Brauseköpfe über ein Überdruckventil, das bei einem Überdruck in der Fluidführung im Brausekopfgehäuse anspricht, um einen längeren Betrieb des Brausekopfs in einem solchen Überdruckzustand zu vermeiden. Dazu ist das Überdruckventil an die Fluidführung druckangekoppelt, d.h. drucktechnisch angekoppelt, so dass der Überdruck in der Fluidführung auf das Überdruckventil wirkt und dessen beweglichen Ventilkörper in die Überdruckstellung bewegt. Solange sich der Fluiddruck in der Fluidführung im Normaldruckbereich befindet und noch kein Überdruck aufgetreten ist, befindet sich der Ventilkörper in seiner Normalstellung, d.h. seiner für den normalen Brausebetrieb des Brausekopfs gedachten Stellung.Therefore, these shower heads have a pressure relief valve which responds to an overpressure in the fluid guide in the shower head housing in order to avoid prolonged operation of the shower head in such a pressure condition. For this purpose, the pressure relief valve is pressure-coupled to the fluid guide, that is to say coupled in terms of pressure technology, so that the excess pressure in the fluid guide acts on the pressure relief valve and moves its movable valve body into the pressure relief position. As long as the fluid pressure in the fluid guide is in the normal pressure range and no excess pressure has yet occurred, the valve body is in its normal position, ie its position intended for the normal shower operation of the shower head.

Bei einem in der Patentschrift AT 252 826 B offenbarten Brausekopf dieser Art erfolgt eine Überdrucksicherung durch Freigeben eines zusätzlichen Austrittsquerschnitts mittels Aufweiten eines elastischen Abschlusses. Speziell ist dazu zwischen einer austrittseitigen Strahlscheibe, die in üblicher Weise mit einer Mehrzahl von Strahlaustrittsöffnungen versehen ist, und einem angrenzenden Teil des Brausekopfgehäuses in einem freigelassenen Ringspalt ein mit einer Ringnut versehener Ring mit vorzugsweise im Wesentlichen V-förmigem Querschnitt vorgesehen, wobei der zusätzliche Austrittsquerschnitt in Form von am Boden der Ringnut angeordneten Öffnungen gebildet ist, die durch einen elastischen Dichtungsring, wie einen O-Ring, abgeschlossen sind, der sich bei einem Überdruck in der Fluidführung im Brausekopfgehäuse elastisch aufweitet und dadurch die ansonsten geschlossenen Öffnungen freigibt. Wenn kein Überdruck mehr in der Fluidführung vorliegt, kehrt der Dichtungsring aufgrund seiner Elastizität selbsttätig wieder in seinen die Überdrucköffnungen schließenden Zustand zurück.One in the patent AT 252 826 B Disclosed shower head of this type is overpressure protection by releasing an additional outlet cross section by widening an elastic closure. For this purpose, a ring provided with an annular groove, preferably with a substantially V-shaped cross section, is provided between an outlet-side spray disc, which is provided in the usual manner with a plurality of spray outlet openings, and an adjacent part of the shower head housing in a free annular gap, the additional outlet cross section is formed in the form of openings arranged at the bottom of the annular groove, which are closed by an elastic sealing ring, such as an O-ring, which expands elastically in the fluid guide in the shower head housing when there is excess pressure, thereby opening up the otherwise closed openings. When there is no longer any overpressure in the fluid guide, the sealing ring automatically returns to its state in which it closed the overpressure openings due to its elasticity.

Bei einem in der Offenlegungsschrift DE 10 2015 003 607 A1 offenbarten weiteren Brausekopf dieser Art ist ein Überdruckventil mit einem Ventilkörper vorgesehen, der zentrisch und axialbeweglich am Brausekopf angeordnet ist und in Normalstellung etwa bündig zu einer Strahlscheibe abschließt, während er in Überdruckstellung etwas vorsteht. Das Überdruckventil besitzt eine von der Fluidführung nach außen zur Strahlscheibe führende Leckageöffnung, die vom beweglichen Ventilkörper in Normalstellung geschlossen und bei einem auftretenden Überdruck freigegeben wird. Der Ventilkörper ist mittels einer Vorspannfeder in seine Schließstellung vorgespannt.At one in the published application DE 10 2015 003 607 A1 disclosed further shower head of this type, a pressure relief valve is provided with a valve body which is arranged centrally and axially movable on the shower head and in the normal position is approximately flush with a spray disc, while it protrudes somewhat in the pressure position. The pressure relief valve has a leakage opening leading from the fluid guide to the jet disc, which is closed in the normal position by the movable valve body and released when an overpressure occurs. The valve body is biased into its closed position by means of a biasing spring.

Der Erfindung liegt als technisches Problem die Bereitstellung eines Brausekopfs der eingangs genannten Art zugrunde, der gegenüber dem oben erwähnten Stand der Technik Verbesserungen insbesondere hinsichtlich Funktionalität in Bezug auf das Überdruckverhalten bietet.The invention is based on the technical problem of providing a shower head of the type mentioned at the outset, which offers improvements over the prior art mentioned above, in particular with regard to functionality with regard to the overpressure behavior.

Die Erfindung löst dieses Problem durch die Bereitstellung eines Brausekopfs mit den Merkmalen des Anspruchs 1.The invention solves this problem by providing a shower head with the features of claim 1.

Bei diesem Brausekopf ist gemäß einem Aspekt der Erfindung der Ventilkörper in der Überdruckstellung selbsthaltend und nutzerbetätigt in die Normalstellung rückbewegbar ausgeführt. Mit dem Begriff selbsthaltend ist hierbei vorliegend die Eigenschaft des Ventilkörpers gemeint, dass er, wenn er durch einen Überdruck in der Fluidführung in seine Überdruckstellung gelangt ist, in dieser auch dann verbleibt, wenn der Überdruck in der Fluidführung nicht mehr besteht. Die Rückbewegung des Ventilkörpers von seiner Überdruckstellung in seine Normalstellung erfolgt nutzerbetätigt und damit nicht selbsttätig. Dies gibt dem Benutzer die Möglichkeit, zunächst die Ursache für den Überdruck abzuklären und ggf. den Brausekopf, insbesondere den Brausestrahlaustritt, zu reinigen, wenn der Überdruck durch Schmutzpartikel und/oder Verkalkungen bedingt ist, wie sie häufig vor allem am Brausestrahlaustritt vorliegen können. Danach kann der Benutzer den Ventilkörper wieder von seiner Überdruckstellung in seine Normalstellung zurückbewegen, so dass sich der Brausekopf wieder in seinem normalen Betriebszustand befindet.In this shower head, according to one aspect of the invention, the valve body in the overpressure position is designed to be self-retaining and operated by the user and can be moved back into the normal position. In the present case, the term self-holding is the property of Valve body means that if it has reached its overpressure position due to an overpressure in the fluid guide, it will remain in this position even if the overpressure in the fluid guide no longer exists. The return movement of the valve body from its overpressure position to its normal position is user-operated and therefore not automatic. This gives the user the opportunity to first clarify the cause of the excess pressure and, if necessary, to clean the shower head, in particular the shower jet outlet, if the excess pressure is caused by dirt particles and / or calcifications, as can often be found especially at the shower jet outlet. The user can then move the valve body back from its overpressure position to its normal position, so that the shower head is again in its normal operating state.

Gemäß einem zusätzlichen oder alternativen Aspekt der Erfindung wirkt der Ventilkörper stellungsabhängig auf einen Durchlassquerschnitt der Fluidführung, wobei er den Durchlassquerschnitt in der Überdruckstellung gegenüber der Normalstellung verkleinert. Das Überdruckventil sorgt gemäß diesem Erfindungsaspekt im Überdruckfall verglichen mit dem Normalbetrieb nicht für das Freigeben einer zusätzlichen Überdrucköffnung bzw. das entsprechende Erhöhen des gesamten Fluidaustrittsquerschnitts des Brausekopfs, sondern für eine Verringerung des Durchlassquerschnitts der Fluidführung vom Fluideinlass zum Brausestrahlaustritt. Dies verringert den Volumenstrom an durch den Brausekopf hindurchgeführtem Fluid. Die Volumenstromreduktion kann beispielsweise so stark sein, dass das Fluid nur noch in einzelnen Tropfen aus dem Brausekopf austritt. Dadurch wird der Benutzer zum Eingreifen bzw. zur Wartung des Brausekopfs veranlasst.According to an additional or alternative aspect of the invention, the valve body acts in a position-dependent manner on a passage cross section of the fluid guide, wherein it reduces the passage cross section in the overpressure position compared to the normal position. According to this aspect of the invention, the pressure relief valve does not provide for the release of an additional pressure relief opening or the corresponding increase in the overall fluid outlet cross section of the shower head in the case of overpressure compared to normal operation, but for a reduction in the passage cross section of the fluid guide from the fluid inlet to the shower spray outlet. This reduces the volume flow of fluid passed through the shower head. The volume flow reduction can be so strong, for example, that the fluid only exits the shower head in individual drops. This prompts the user to intervene or maintain the shower head.

Somit wird durch die Erfindung in jedem ihrer genannten Aspekte in einer vorteilhaften Weise zuverlässig vermieden, dass der Brausekopf längere Zeit mit zu hohem Druck im Brausekopfgehäuse betrieben wird.Thus, the invention reliably and reliably avoids in each of its aspects mentioned that the shower head is operated in the shower head housing with excessive pressure for a long time.

In einer Weiterbildung der Erfindung beinhaltet der Brausestrahlaustritt eine Mehrzahl von Strahlaustrittsöffnungen, und die Fluidführung weist eine Verteilkammer stromaufwärts der Strahlaustrittsöffnungen auf. Der Ventilkörper wirkt auf den Durchlassquerschnitt der Fluidführung zwischen dem Fluideinlass und der Verteilkammer. Der Ventilkörper kann dadurch den Durchlassquerschnitt der Fluidführung an dieser Stelle verringern, wenn in der Fluidführung ein Überdruck auftritt, wodurch der Volumenstrom an Fluid in die Verteilkammer reduziert werden kann. Damit kann der Überdruck in der Verteilkammer über die Strahlaustrittsöffnungen abgebaut und dem Benutzer durch den verringerten Volumenstrom angezeigt werden, dass ein Überdruckfall vorliegt.In a development of the invention, the shower jet outlet contains a plurality of jet outlet openings, and the fluid guide has a distribution chamber upstream of the jet outlet openings. The valve body acts on the passage cross section of the fluid guide between the fluid inlet and the distribution chamber. The valve body can thereby reduce the passage cross section of the fluid guide at this point, if an overpressure occurs in the fluid guide, whereby the volume flow of fluid into the distribution chamber can be reduced. This allows the overpressure in the distribution chamber to be reduced via the jet outlet openings and the reduced volume flow to indicate to the user that there is an overpressure case.

In einer Weiterbildung der Erfindung ist der Ventilkörper zylindrisch und in Axialrichtung im Brausekopfgehäuse beweglich ausgeführt und weist einen radial abstehenden Ringkragen mit mindestens einer Ventildurchgangsöffnung auf. Die Fluidführung umfasst eine Ventilkammer, in welcher der Ventilkörper mit seinem Ringflansch axialbeweglich geführt ist, sowie mindestens eine in die Ventilkammer einmündende Ventileinlassöffnung und mindestens eine aus der Ventilkammer ausmündende Ventilauslassöffnung. Der Ventilkörper verkleinert mit seinem Ringkragen einen Durchlassquerschnitt der mindestens einen Ventilauslassöffnung in der Überdruckstellung verglichen mit der Normalstellung. Der Ringkragen dient somit in dieser Ausführung als eine Art beweglicher Ventilschließkörper, der die mindestens eine Ventilauslassöffnung freilässt, wenn sich der Ventilkörper in seiner Normalstellung befindet, und die Ventilauslassöffnung mindestens teilweise, d.h. vollständig oder partiell, blockiert bzw. verschließt, wenn sich der Ventilkörper in der Überdruckstellung befindet.In a development of the invention, the valve body is cylindrical and movable in the axial direction in the shower head housing and has a radially projecting ring collar with at least one valve passage opening. The fluid guide comprises a valve chamber in which the valve body with its ring flange is guided in an axially movable manner, as well as at least one valve inlet opening opening into the valve chamber and at least one valve outlet opening opening out of the valve chamber. With its ring collar, the valve body reduces a passage cross section of the at least one valve outlet opening in the overpressure position compared to the normal position. The ring collar thus serves in this embodiment as a kind of movable valve closing body, which leaves the at least one valve outlet opening free when the valve body is in its normal position, and the valve outlet opening at least partially, i.e. completely or partially, blocked or closed when the valve body is in the overpressure position.

In einer Ausgestaltung der Erfindung verläuft die mindestens eine Ventileinlassöffnung axial, ebenso die mindestens eine Ventildurchgangsöffnung. In der Normalstellung des Ventilkörpers fluchtet die Ventildurchgangsöffnung mit der Ventileinlassöffnung. Dies stellt eine konstruktiv und strömungstechnisch vorteilhafte Realisierung für die Fluidführung in diesem Bereich dar.In one embodiment of the invention, the at least one valve inlet opening extends axially, as does the at least one valve passage opening. In the normal position of the valve body, the valve passage opening is aligned with the valve inlet opening. This represents a constructively and fluidically advantageous realization for the fluid guidance in this area.

In einer Ausgestaltung der Erfindung beinhaltet der Brausekopf im Brausekopfgehäuse einen hohlzylindrischen Ventilsitzkörper, an dem der Ventilkörper geführt beweglich gehalten ist und in dem sich die Ventilkammer befindet. Die mindestens eine Ventilauslassöffnung erstreckt sich mit radialer Richtungskomponente, optional zusätzlich mit axialer Richtungskomponente, nach außen durch einen Zylindermantelabschnitt des Ventilsitzkörpers hindurch. Auch diese Konstruktionsmaßnahme ist strömungstechnisch und funktionell für das Überdruckventil von Vorteil.In one embodiment of the invention, the shower head in the shower head housing contains a hollow cylindrical valve seat body, on which the valve body is held in a guided manner and in which the valve chamber is located. The at least one valve outlet opening extends with a radial directional component, optionally additionally with an axial directional component, through a cylinder jacket section of the valve seat body. This design measure is also advantageous in terms of flow and function for the pressure relief valve.

In einer Weiterbildung der Erfindung beinhaltet der Brausekopf eine den Brausestrahlaustritt bildende Strahlscheibe, und der Ventilkörper befindet sich auf einer gleichen Seite des Brausekopfgehäuses wie die Strahlscheibe. Da die Strahlscheibenseite eines Brausekopfs üblicherweise diejenige Seite des Brausekopfs darstellt, die dem Benutzer im Betrieb zugewandt ist oder die er jedenfalls leicht einsehen kann und die für ihn leicht zugänglich ist, hat diese Maßnahme den Vorteil, dass der Benutzer den Ventilkörper und seine jeweilige momentane Stellung gut erkennen und ihn bei Bedarf, z.B. zum Zurückbewegen von seiner Überdruckstellung in seine Normalstellung, leicht handhaben kann.In a further development of the invention, the shower head contains a jet disk forming the shower jet outlet, and the valve body is located on the same side of the shower head housing as the jet disk. Since the spray disc side of a shower head usually represents that side of the shower head which faces the user in operation or which he can easily see in any case and which is easily accessible for him, this measure has the advantage that the user has the valve body and its respective current position recognize it well and if necessary, e.g. for moving back from its overpressure position to its normal position, can be easily handled.

In einer Ausgestaltung der Erfindung steht der Ventilkörper in der Überdruckstellung von der Außenseite der Strahlscheibe vor, während er in der Normalstellung nicht von der Außenseite der Strahlscheibe vorsteht, d.h. mit dieser fluchtet oder alternativ gegenüber dieser zurückgesetzt ist. Dadurch kann der Benutzer sehr einfach an der Stellung des Ventilkörpers relativ zur Strahlscheibe erkennen, ob ein Überdruckfall vorliegt oder nicht.In one embodiment of the invention, the valve body projects from the outside of the jet disk in the overpressure position, while it does not project from the outside of the jet disk in the normal position, i.e. is aligned with it or alternatively is set back relative to it. As a result, the user can very easily recognize from the position of the valve body relative to the spray disc whether there is an overpressure drop or not.

In einer Weiterbildung der Erfindung umfasst das Überdruckventil eine Magnetanordnung, die den Ventilkörper durch eine Magnetkraft in der Normalstellung hält, wobei die Magnetkraft von einem Überdruck in der Fluidführung überwunden werden kann, hingegen nicht von den Druckkräften etwaiger normaler Fluiddruckschwankungen in der Fluidführung im normalen, fehlerfreien Betrieb des Brausekopfs. Dabei nimmt die Magnetkraft in ihrer Stärke mit zunehmender Entfernung des Ventilkörpers von der Normalstellung bis auf einen Irrelevanzwert in der Überdruckstellung ab. Mit dem Begriff Irrelevanzwert ist hierbei vorliegend gemeint, dass der Wert der Magnetkraft in der Überdruckstellung gleich null oder jedenfalls so gering ist, dass die Magnetkraft auch dann nicht mehr in der Lage ist, den Ventilkörper unter Überwindung üblicher Reibungskräfte und etwaiger restlicher Fluiddruckkräfte selbsttätig von seiner Überdruckstellung in seine Normalstellung zurückzubewegen, wenn der Überdruckfall nicht mehr vorliegt, d.h. der Überdruck in der Fluidführung abgebaut ist. Mit anderen Worten hat die Magnetkraft keine Relevanz für die Rückbewegung des Ventilkörpers von seiner Überdruckstellung in die Normalstellung. Der Benutzer kann daher selbst entscheiden, wann er den Ventilkörper wieder in seine Normalstellung zurückbewegen will, wozu er diesen entsprechend betätigen kann. In der Normalstellung hält der Ventilkörper dann wieder durch die Wirkung der Magnetkraft.In a development of the invention, the pressure relief valve comprises a magnet arrangement which holds the valve body in the normal position by a magnetic force, the magnetic force being able to be overcome by an overpressure in the fluid guide, but not by the pressure forces of any normal fluid pressure fluctuations in the fluid guide in the normal, error-free manner Operation of the shower head. The strength of the magnetic force decreases with increasing distance of the valve body from the normal position to an irrelevance value in the overpressure position. In the present case, the term irrelevance value means that the value of the magnetic force in the overpressure position is zero or in any case so low that the magnetic force is then no longer able to remove the valve body automatically by overcoming the usual frictional forces and any remaining fluid pressure forces To move the overpressure position back to its normal position when the overpressure drop is no longer present, ie the overpressure in the fluid guide has been reduced. In other words, the magnetic force has no relevance for the return movement of the valve body from its overpressure position to the normal position. The user can therefore decide for himself when he wants to move the valve body back to its normal position, for which he accordingly can operate. In the normal position, the valve body then holds again through the action of the magnetic force.

Vorteilhafte Ausführungsformen der Erfindung sind in den Zeichnungen dargestellt und werden nachfolgend beschrieben, wobei zusätzlich weitere vorteilhafte erfindungsgemäße Ausführungsformen erwähnt und erläutert werden. Hierbei zeigen:

Fig. 1
eine Längsschnittansicht eines Brausekopfs,
Fig. 2
eine Detaillängsschnittansicht eines mittigen Bereichs des Brausekopfs von Fig. 1,
Fig. 3
eine Längsschnittansicht eines im Brausekopf von Fig. 1 verwendbaren Überdruckventils mit einem Ventilkörper in Normalstellung,
Fig. 4
eine Perspektivansicht des Überdruckventils von Fig. 3,
Fig. 5
eine Detailansicht eines Bereichs V in Fig. 3,
Fig. 6
die Ansicht von Fig. 3 mit dem Ventilkörper in Überdruckstellung und
Fig. 7
eine Seitenansicht des Überdruckventils in der Überdruckstellung von Fig. 6.
Advantageous embodiments of the invention are shown in the drawings and are described below, with additional advantageous embodiments according to the invention being mentioned and explained. Here show:
Fig. 1
2 shows a longitudinal sectional view of a shower head,
Fig. 2
a detailed longitudinal sectional view of a central area of the shower head of Fig. 1 ,
Fig. 3
a longitudinal sectional view of a shower head of Fig. 1 usable pressure relief valve with a valve body in normal position,
Fig. 4
a perspective view of the pressure relief valve of Fig. 3 ,
Fig. 5
a detailed view of an area V in Fig. 3 ,
Fig. 6
the view of Fig. 3 with the valve body in overpressure position and
Fig. 7
a side view of the pressure relief valve in the pressure position of Fig. 6 .

Der in den Fig. 1 und 2 gezeigte Brausekopf umfasst ein Brausekopfgehäuse 1, einen Fluideinlass 2 in das Brausekopfgehäuse 1, einen Brausestrahlaustritt 3 aus dem Brausekopfgehäuse 1, eine Fluidführung 4 im Brausekopfgehäuse vom Fluideinlass 2 zum Brausestrahlaustritt 3 sowie ein Überdruckventil 5. Das Überdruckventil 5 ist an die Fluidführung 4 druckangekoppelt, d.h. ein Fluiddruck, der in der Fluidführung 4 in einem entsprechenden Bereich herrscht, an den das Überdruckventil 5 wirktechnisch angekoppelt ist, wirkt auf das Überdruckventil 5. Das in den Brausekopf der Fig. 1 und 2 eingebaute Überdruckventil 5 ist in den Fig. 3 bis 7 näher veranschaulicht. Es versteht sich, dass dieses Überdruckventil auch in anderen Brauseköpfen verwendet werden kann.The one in the 1 and 2 The shower head shown comprises a shower head housing 1, a fluid inlet 2 into the shower head housing 1, a shower jet outlet 3 from the shower head housing 1, a fluid guide 4 in the shower head housing from the fluid inlet 2 to the shower jet outlet 3 and a pressure relief valve 5. The pressure relief valve 5 is pressure-coupled to the fluid guide 4, ie a fluid pressure which prevails in the fluid guide 4 in a corresponding area to which the pressure relief valve 5 is operatively coupled acts on the pressure relief valve 5 1 and 2 built-in pressure relief valve 5 is in the 3 to 7 illustrated in more detail. It is understood that this pressure relief valve can also be used in other shower heads.

Das Überdruckventil 5 beinhaltet einen beweglichen Ventilkörper 6, der sich bei einem Überdruck in der Fluidführung 4 von einer Normalstellung NS, wie sie in den Fig. 3 bis 5 gezeigt ist, in eine Überdruckstellung US bewegt, wie sie in den Fig. 6 und 7 sowie im Einbauzustand der Fig. 1 und 2 gezeigt ist.The pressure relief valve 5 contains a movable valve body 6 which, in the event of an overpressure in the fluid guide 4, changes from a normal position N S , as shown in FIGS 3 to 5 is shown, moved to an overpressure position U S , as in the 6 and 7 and in the installed state of the 1 and 2 is shown.

In entsprechenden Ausführungsformen der Erfindung ist der Ventilkörper 6 derart ausgeführt, dass er in der Überdruckstellung US selbsthaltend verbleibt und nutzerbetätigt in die Normalstellung NS rückbewegt werden kann. Dies bedeutet, dass der Ventilkörper 5, wenn er aufgrund eines Überdrucks in der Fluidführung 4 seine Überdruckstellung eingenommen hat, in der Überdruckstellung US verbleibt, bis der Benutzer ihn wieder in die Normalstellung NS zurückbewegt, auch wenn zwischenzeitlich der Überdruck in der Fluidführung 4 nicht mehr vorliegt.In corresponding embodiments of the invention, the valve body 6 is designed such that it remains self-holding in the overpressure position U S and can be moved back to the normal position N S when operated by the user. This means that the valve body 5, if it has assumed its overpressure position due to an overpressure in the fluid guide 4, remains in the overpressure position U S until the user moves it back into the normal position N S , even if in the meantime the overpressure in the fluid guide 4 is no longer available.

Im gezeigten Ausführungsbeispiel weist das Überdruckventil 5 hierzu eine Magnetanordnung 7 auf, die den Ventilkörper 6 durch eine Magnetkraft FM, die von einem Überdruck von der Fluidführung 4 überwindbar ist, in der Normalstellung NS hält, wobei die Magnetkraft FM in ihrer Stärke mit zunehmender Entfernung des Ventilkörpers 6 von der Normalstellung NS bis auf einen Irrelevanzwert in der Überdruckstellung US abnimmt. In alternativen Ausführungsformen beinhaltet das Überdruckventil anstelle einer solchen Magnetanordnung eine andere herkömmliche Haltekraftquelle, die den Ventilkörper in der Normalstellung NS mit einer vom Überdruck in der Fluidführung 4 überwindbaren Haltekraft beaufschlagt, die in der Überdruckstellung US nicht mehr auf den Ventilkörper 6 wirkt oder jedenfalls nicht so stark ist, dass sie den Ventilkörper 6 selbst bei nicht mehr vorhandenem Überdruck in die Normalstellung NS zurückbewegen könnte.In the exemplary embodiment shown, the pressure relief valve 5 has a magnet arrangement 7 for this purpose, which holds the valve body 6 in the normal position N S by a magnetic force F M that can be overcome by an excess pressure from the fluid guide 4, the strength of the magnetic force F M also increasing distance of the valve body 6 from the normal position N S to an irrelevance value in the overpressure position U S decreases. In alternative embodiments, the pressure relief valve contains, instead of such a magnet arrangement, another conventional holding force source, which acts on the valve body in the normal position N S with a holding force which can be overcome by the excess pressure in the fluid guide 4 and which no longer acts on the valve body 6 in the pressure position U S, or in any case is not so strong that it could move the valve body 6 back to the normal position N S even when the excess pressure is no longer present.

Im gezeigten Ausführungsbeispiel ist die Magnetanordnung 7 von zwei zusammenwirkenden Magneten 7a, 7b gebildet, von denen ein erster Magnet 7b im bzw. am Ventilkörper 6 und ein zweiter Magnet 7a in oder an einem stationär bleibenden Teil des Überdruckventils 5 angeordnet ist. Die beiden Magnete 7a, 7b können z.B. Permanentmagnete sein und die Magnetkraft FM als eine magnetische Anziehungskraft zwischen den beiden Magneten 7a, 7b bereitstellen, die wie üblich mit wachsendem Abstand der beiden Magnete 7a, 7b in ihrer Stärke rasch abnimmt. Die Magnete 7a, 7b sind passend so gewählt, dass sie in der Normalstellung NS des Ventilkörpers 6, in der sie ihren geringsten Abstand haben, die Magnetkraft FM in der zum Halten des Ventilkörpers 6 in seiner Normalstellung NS erforderlichen Stärke bereitstellen, während die Magnetkraft FM in der Überdruckstellung US des Ventilkörpers 6, in der die beiden Magnete 7a, 7b ihren maximalen Abstand haben, praktisch auf null oder jedenfalls so weit abgefallen ist, dass sie nicht mehr in der Lage ist, den Ventilkörper 6 gegen allfällige Reibungskräfte und ggf. vorliegende Fluiddruckkräfte in die Normalstellung NS zurückzubewegen.In the exemplary embodiment shown, the magnet arrangement 7 is formed by two interacting magnets 7a, 7b, of which a first magnet 7b is arranged in or on the valve body 6 and a second magnet 7a in or on a part of the pressure relief valve 5 which remains stationary. The two magnets 7a, 7b can, for example, be permanent magnets and provide the magnetic force F M as a magnetic attraction between the two magnets 7a, 7b, which, as usual, rapidly decreases in strength with increasing distance between the two magnets 7a, 7b. The magnets 7a, 7b are suitably chosen so that in the normal position N S of the valve body 6, in the they have their smallest distance, the magnetic force F M in the strength required to hold the valve body 6 in its normal position N S provide, while the magnetic force F M in the overpressure position U S of the valve body 6, in which the two magnets 7a, 7b their maximum Have distance, has practically dropped to zero or in any case so far that it is no longer able to move the valve body 6 back to the normal position N S against any frictional forces and any fluid pressure forces that may be present.

In entsprechenden Ausführungsformen der Erfindung wirkt der Ventilkörper 6 stellungsabhängig auf einen Durchlassquerschnitt DQ der Fluidführung 4 dahingehend, dass er den Durchlassquerschnitt DQ in der Überdruckstellung US verglichen mit der Normalstellung NS verkleinert.In corresponding embodiments of the invention, the valve body 6 acts in a position-dependent manner on a passage cross section D Q of the fluid guide 4 in such a way that it reduces the passage cross section D Q in the overpressure position U S compared to the normal position N S.

Im gezeigten Ausführungsbeispiel ist der Ventilkörper 6 zylindrisch und in Axialrichtung AR im Brausekopfgehäuse 1 beweglich ausgeführt, wobei unter Axialrichtung AR wie üblich die zu einer Längsmittenachse des zylindrischen Ventilkörpers 6 parallele Richtung zu verstehen ist, ebenso deren entgegengesetzte Richtung. Der Ventilkörper 6 weist einen radial abstehenden Ringkragen 8 mit mindestens einer Ventildurchgangsöffnung 9 auf. Die Fluidführung 4 umfasst eine Ventilkammer 10, in welcher der Ventilkörper 6 mit seinem Ringkragen 8 beweglich geführt ist. Außerdem weist die Fluidführung 4 mindestens eine in die Ventilkammer 10 einmündende Ventileinlassöffnung 11 und mindestens eine aus der Ventilkammer 10 ausmündende Ventilauslassöffnung 12 auf. Der Ventilkörper 6 verkleinert mit seinem Ringkragen 8 den Durchlassquerschnitt DQ der mindestens einen Ventilauslassöffnung 12, wenn sich der Ventilkörper 6 in der Überdruckstellung US befindet, verglichen mit dem Betriebszustand, wenn sich der Ventilkörper 6 in der Normalstellung NS befindet. Mit anderen Worten verkleinert der Ventilkörper 6 im gezeigten Beispiel den Durchlassquerschnitt DQ der Fluidführung 4 im Bereich der wenigstens einen Ventilauslassöffnung 12. In alternativen Ausführungen wirkt der Ventilkörper an einer anderen Stelle der Fluidführung 4 auf deren Durchlassquerschnitt DQ im Sinn einer Verkleinerung bei auftretendem Überdruck ein. Die Verkleinerung kann darin bestehen, dass der Durchlassquerschnitt DQ vollständig abgesperrt, d.h. auf null reduziert, wird oder alternativ auf einen gewünschten anderen reduzierten Querschnittswert zwischen dem Wert null und einem maximalen Wert, den der Durchlassquerschnitt DQ an der betreffenden Stelle der Fluidführung 4 besitzt, wenn sich der Ventilkörper 6 in der Überdruckstellung US befindet.In the exemplary embodiment shown, the valve body 6 is cylindrical and movable in the axial direction A R in the shower head housing 1, the axial direction A R as usual being understood to mean the direction parallel to a longitudinal center axis of the cylindrical valve body 6, as well as its opposite direction. The valve body 6 has a radially projecting ring collar 8 with at least one valve passage opening 9. The fluid guide 4 comprises a valve chamber 10, in which the valve body 6 is movably guided with its ring collar 8. In addition, the fluid guide 4 has at least one valve inlet opening 11 opening into the valve chamber 10 and at least one valve outlet opening 12 opening out of the valve chamber 10. With its ring collar 8, the valve body 6 reduces the passage cross section D Q of the at least one valve outlet opening 12 when the valve body 6 is in the overpressure position U S , compared to the operating state when the valve body 6 is in the normal position N S. In other words, in the example shown, the valve body 6 reduces the passage cross section D Q of the fluid guide 4 in the region of the at least one valve outlet opening 12. In alternative embodiments, the valve body acts at another point on the fluid guide 4 on its passage cross section D Q in the sense of a reduction when excess pressure occurs a. The reduction can be that the passage cross-section D Q is completely blocked, ie reduced to zero, or alternatively to a desired other reduced cross-sectional value between the value zero and a maximum value that the Passage cross section D Q has at the relevant point of the fluid guide 4 when the valve body 6 is in the overpressure position U S.

Die Ventilkammer 10, die mindestens eine Ventileinlassöffnung 11 und die mindestens eine Ventilauslassöffnung 12 können z.B. sämtlich am Überdruckventil 5 ausgebildet sein. Im gezeigten Beispiel ist die Ventilkammer 10 von ringzylindrischer Form, alternativ kann sie eine andere Form besitzen, z.B. eine vollzylindrische Form. In entsprechenden Ausführungen sind jeweils eine Mehrzahl von Ventileinlassöffnungen 11 und Ventildurchgangsöffnungen 9 vorgesehen, z.B. jeweils in Umfangsrichtung äquidistant angeordnet.The valve chamber 10, the at least one valve inlet opening 11 and the at least one valve outlet opening 12 can e.g. all be formed on the pressure relief valve 5. In the example shown, the valve chamber 10 is of annular cylindrical shape, alternatively it can have another shape, e.g. a fully cylindrical shape. In corresponding designs, a plurality of valve inlet openings 11 and valve through openings 9 are provided, e.g. each arranged equidistantly in the circumferential direction.

In entsprechenden Ausführungen verlaufen sowohl die mindestens eine Ventileinlassöffnung 11 als auch die mindestens eine Ventildurchgangsöffnung 9 rein axial, d.h. parallel zur Axialrichtung AR, wobei die mindestens eine Ventildurchgangsöffnung 9 fluchtend zur mindestens einen Ventileinlassöffnung 11 verläuft, wenn sich der Ventilkörper 6 in der Normalstellung NS befindet. In alternativen Ausführungen verläuft die mindestens eine Ventileinlassöffnung und/oder die mindestens eine Ventildurchgangsöffnung mindestens abschnittsweise schräg oder senkrecht zur Axialrichtung AR. Der fluchtende Übergang von der jeweiligen Ventileinlassöffnung 11 zur jeweiligen Ventildurchgangsöffnung 9 ermöglicht es dem Fluid, in der Normalstellung NS des Ventilkörpers 6 über die mindestens eine Ventileinlassöffnung 11 ungehindert durch die mindestens eine Ventildurchgangsöffnung 9 hindurch in die Ventilkammer 10 zu gelangen.Extend in the respective embodiments, both the at least one valve inlet opening 11 and the at least one valve passage opening 9 purely axial, ie parallel to the axial direction A R, wherein the at least 9 in alignment with the at least extends to a valve passage opening a valve inlet port 11 when the valve body 6 in the normal position N S is located. In alternative embodiments, the at least one valve inlet opening and / or the at least one valve passage opening runs at least in sections at an angle or perpendicular to the axial direction A R. The flush transition from the respective valve inlet opening 11 to the respective valve passage opening 9 enables the fluid to pass through the at least one valve inlet opening 11 into the valve chamber 10 through the at least one valve passage opening 9 in the normal position N S of the valve body 6.

Im gezeigten Beispiel liegt der Ventilkörper 6 in der Normalstellung NS mit seiner jeweiligen Ventildurchgangsöffnung 9 ohne oder mit allenfalls geringem Abstand der jeweiligen Ventileinlassöffnung 11 in einem zugehörigen Stirnendbereich der Ventilkammer 10 gegenüber. Im Überdruckzustand US befindet sich der Ventilkörper 6 mit seinem Ringkragen 8 im anderen Stirnendbereich der Ventilkammer 10 und folglich mit merklichem Abstand von der oder den Ventileinlassöffnungen 11 entfernt, so dass auch im Überdruckfall die eine oder mehreren Ventileinlassöffnungen 11 vom Ventilkörper 6 nicht abgesperrt werden.In the example shown, the valve body 6 lies in the normal position N S with its respective valve passage opening 9 with no or at most a short distance from the respective valve inlet opening 11 in an associated end region of the valve chamber 10. In the overpressure state U S , the valve body 6 with its ring collar 8 is located in the other end region of the valve chamber 10 and consequently at a noticeable distance from the valve inlet opening (s) 11, so that the one or more valve inlet openings 11 are not blocked off by the valve body 6 even in the event of overpressure.

In entsprechenden Ausführungsformen beinhaltet das Überdruckventil 5 einen hohlzylindrischen Ventilsitzkörper 13, an dem der Ventilkörper 6 geführt gehalten ist und in dem sich die Ventilkammer 10 befindet. Dabei erstreckt sich die mindestens eine Ventilauslassöffnung 12 mit radialer Richtungskomponente nach außen durch einen Zylindermantelabschnitt 13a des Ventilsitzkörpers 13 hindurch.In corresponding embodiments, the pressure relief valve 5 contains a hollow cylindrical valve seat body 13, on which the valve body 6 is held and in which is the valve chamber 10. In this case, the at least one valve outlet opening 12 with a radial directional component extends outward through a cylinder jacket section 13a of the valve seat body 13.

Im gezeigten Beispiel ist der Ventilsitzkörper 13 aus mehreren zusammengefügten Teilen gefertigt, in alternativen Ausführungen ist er einteilig gefertigt. Im gezeigten Beispiel ist er in einem Stirnendbereich mit einem Außengewinde 14 versehen, mit der er in ein Innengewinde einer Gelenkhülse 15 des Brausekopfs 1 eingeschraubt sein kann, wie gezeigt. Weiter besitzt der Ventilsitzkörper 13 im gezeigten Beispiel in einem axial mittigen Bereich ein Außengewinde 16, an dem ein Brauseaustrittsteil 1a des Brausekopfgehäuses 1 angeschraubt ist. In alternativen Ausführungen ist der Ventilsitzkörper 13 in einer anderen herkömmlichen Weise mit dem Brausekopfgehäuse verbindbar.In the example shown, the valve seat body 13 is made from several assembled parts, in alternative versions it is made in one piece. In the example shown, it is provided in an end region with an external thread 14 with which it can be screwed into an internal thread of an articulated sleeve 15 of the shower head 1, as shown. Furthermore, in the example shown, the valve seat body 13 has an external thread 16 in an axially central region, to which a shower outlet part 1 a of the shower head housing 1 is screwed. In alternative embodiments, the valve seat body 13 can be connected to the shower head housing in another conventional manner.

Im gezeigten Beispiel ist der Brauseaustrittsteil 1a in einer Flachbrausen-Bauweise gefertigt, wodurch sich der Brausekopf der Fig. 1 und 2 insbesondere als flache Kopfbrause eignet, wie sie zur Verwendung in sanitären Duschräumen bzw. Duscheinrichtungen an sich bekannt ist. Der Brauseaustrittsteil 1a ist über ein Kugelgelenk 16 an einen Brausekopfanschlussteil 1b gelenkig angekoppelt, über den der Brausekopf an eine Fluidzuführung angeschlossen werden kann und der den Fluideinlass 2 bildet. In alternativen Ausführungen ist der Brausekopf nicht in dieser Flachbauweise konfiguriert, sondern von einer anderen herkömmlichen Bauart, z.B. einer glockenförmigen Bauart. Optional ist, wie gezeigt, im Fluidführungsabschnitt des Brausekopfanschlussteils 1b zwischen dem Fluideinlass 2 und der wenigstens einen Ventileinlassöffnung 11 ein Siebelement 17 als Schmutz-/Partikelsieb angeordnet.In the example shown, the shower outlet part 1a is made in a flat shower design, which means that the shower head is 1 and 2 Particularly suitable as a flat overhead shower, as is known per se for use in sanitary shower rooms or shower facilities. The shower outlet part 1 a is articulated via a ball joint 16 to a shower head connection part 1 b, via which the shower head can be connected to a fluid supply and which forms the fluid inlet 2. In alternative versions, the shower head is not configured in this flat design, but of another conventional design, for example a bell-shaped design. As shown, a sieve element 17 is optionally arranged as a dirt / particle sieve in the fluid guide section of the shower head connection part 1b between the fluid inlet 2 and the at least one valve inlet opening 11.

Der Brauseaustrittsteil 1a besitzt einen abgesehen vom Überdruckventil 5 an sich bekannten Aufbau, der fluidaustrittsseitig mit einer den Brausestrahlaustritt 3 bildenden Strahlscheibe 18 abschließt, die mit einer oder meist einer Vielzahl von Strahlaustrittsöffnungen 19 versehen ist, die in einer vorgebbaren Konfiguration über eine beispielsweise kreisrunde oder viereckige Austrittsfläche der Strahlscheibe18 hinweg angeordnet sind.The shower outlet part 1a has, apart from the pressure relief valve 5, a structure which is known per se and which ends on the fluid outlet side with a jet disk 18 which forms the shower jet outlet 3 and which is provided with one or usually a plurality of jet outlet openings 19 which, in a predeterminable configuration, have a circular or square shape, for example Exit surface of the jet disc 18 are arranged away.

In entsprechenden Ausführungsformen weist die Fluidführung 4, wie im gezeigten Beispiel, stromaufwärts der Strahlaustrittsöffnungen 19 eine Verteilkammer 20 auf, aus der die Strahlaustrittsöffnungen 19 ausmünden und in welche die mindestens eine Ventilauslassöffnung 12 einmündet. Somit wirkt bei diesem Brausekopf der Ventilkörper 6 auf den Durchlassquerschnitt DQ der Fluidführung 4 zwischen dem Fluideinlass 2 und der Verteilkammer 20, hier speziell zwischen der Ventilkammer 10 und der Verteilkammer 20.In corresponding embodiments, the fluid guide 4, as in the example shown, has a distribution chamber 20 upstream of the jet outlet openings 19, from which the jet outlet openings 19 open and into which the at least one valve outlet opening 12 opens. In this shower head, the valve body 6 thus acts on the passage cross section D Q of the fluid guide 4 between the fluid inlet 2 and the distribution chamber 20, here specifically between the valve chamber 10 and the distribution chamber 20.

In entsprechenden Ausführungsformen befindet sich der Ventilkörper 6 auf einer gleichen Seite des Brausekopfgehäuses 1 wie die den Brausestrahlaustritt 3 bildende Strahlscheibe 18. Im gezeigten Ausführungsbeispiel befindet sich der Ventilkörper 6 speziell in einem Mittenbereich der Strahlscheibe 18. In alternativen Ausführungen ist der Ventilkörper 6 bezüglich der Strahlscheibe 18 außermittig angeordnet.In corresponding embodiments, the valve body 6 is located on the same side of the shower head housing 1 as the spray disc 18 forming the spray spray outlet 3. In the exemplary embodiment shown, the valve body 6 is specifically located in a central region of the spray disc 18. In alternative embodiments, the valve body 6 is in relation to the spray disc 18 arranged off-center.

In entsprechenden Ausführungen steht der Ventilkörper 6 in der Überdruckstellung US von der Außenseite der Strahlscheibe 18 vor. In diesem Zustand ist der Brausekopf in den Fig. 1 und 2 gezeigt. In der Normalstellung NS steht der Ventilkörper 6 nicht von der Außenseite der Strahlscheibe 18 vor, d.h. er ist gegenüber dieser zurückgesetzt im Inneren des Brausekopfgehäuses 1 positioniert oder schließt im Wesentlichen bündig mit der Außenseite der Strahlscheibe 18 ab. Letzteres ist im gezeigten Beispiel realisiert, d.h. in der Normalstellung NS fluchtet eine Außenseite 6a des Ventilkörpers 6 mit einer Außenseite 13b des Ventilsitzkörpers 13, die ihrerseits im Wesentlichen fluchtend mit der Außenseite der Strahlscheibe 18 abschließt.In corresponding designs, the valve body 6 projects from the outside of the jet disk 18 in the overpressure position U S. In this state, the shower head is in the 1 and 2 shown. In the normal position N S , the valve body 6 does not protrude from the outside of the spray disc 18, ie it is positioned in a recessed manner in the interior of the shower head housing 1 or is essentially flush with the outside of the spray disc 18. The latter is implemented in the example shown, ie in the normal position N S, an outer side 6a of the valve body 6 is aligned with an outer side 13b of the valve seat body 13, which in turn is essentially flush with the outside of the jet disk 18.

Wie insbesondere aus Fig. 5 ersichtlich, ist beim gezeigten Ausführungsbeispiel am Ventilsitzkörper 13 ein Mittenzapfen 13c ausgebildet, der die ringförmige Ventilkammer 10 radial nach innen begrenzt und als zusätzliche Führungshilfe für den Ventilkörper 6 fungieren kann, wozu der Ventilkörper 6 in einem zugehörigen Abschnitt 6c axial zwischen seinem fußseitigen Ringkragen 8 und einem mit der Außenseite 6a abschließenden Kopfabschnitt 6b korrespondierend hohlzylindrisch ausgebildet ist. Zwischen diesem hohlzylindrischen Abschnitt 6c des Ventilkörpers 6 und dem Mittenzapfen 13c des Ventilsitzkörpers 13 ist ein Druckkanal 21 gebildet, der mit der Ventilkammer 10 in Fluidverbindung steht und axial nach vorne bis zu einer Stirnfläche 22 des Ventilkörper-Kopfabschnitts 6b führt.How especially out Fig. 5 can be seen, in the exemplary embodiment shown, a center pin 13c is formed on the valve seat body 13, which delimits the annular valve chamber 10 radially inward and can act as an additional guide for the valve body 6, for which purpose the valve body 6 in an associated section 6c axially between its ring collar 8 on the foot side and a head section 6b, which ends with the outside 6a, is designed to be correspondingly hollow-cylindrical. Between this hollow cylindrical section 6c of the valve body 6 and the center pin 13c of the valve seat body 13, a pressure channel 21 is formed which is in fluid communication with the valve chamber 10 and leads axially forward to an end face 22 of the valve body head section 6b.

In entsprechenden Ausführungen beinhaltet der Druckkanal 21 einen oder mehrere axial bzw. mit axialer Richtungskomponente verlaufende Radialspalte, die z.B. jeweils durch eine axiale bzw. mit axialer Richtungskomponente verlaufende Nut an der Außenseite des Mittenzapfens 13c und/oder an der Innenseite des hohlzylindrischen Ventilkörperabschnitts 6c gebildet sein können. Alternativ kann ein in Umfangsrichtung durchgehender Ringspalt als Druckkanal 21 vorgesehen sein, oder es können axial bzw. mit axialer Richtungskomponente verlaufende Abstandsstege an mindestens einer dieser beiden sich gegenüberstehenden Flächen vorgesehen sein, zwischen denen dann den Druckkanal 21 bildende Zwischenräume vorliegen.In corresponding versions, the pressure channel 21 contains one or more radial gaps running axially or with an axial direction component, which e.g. can each be formed by an axial or axial groove component on the outside of the center pin 13c and / or on the inside of the hollow cylindrical valve body section 6c. Alternatively, a continuous annular gap in the circumferential direction can be provided as the pressure channel 21, or spacing webs running axially or with an axial direction component can be provided on at least one of these two opposing surfaces, between which there are intermediate spaces forming the pressure channel 21.

Im gezeigten Ausführungsbeispiel dient der Mittenzapfen 13c gleichzeitig zur Halterung des zweiten Magneten 7a, während der erste Magnet 7b im Kopfabschnitt 6b des Ventilkörpers 6 angeordnet ist. Die Magnete 7a, 7b können dort in entsprechende Bohrungen eingefügt sein, die seitens des Mittenzapfens 13c beispielhaft mit einer Dichtschraube 23 und seitens des Ventilkörpers 6 mit einer die Außenseite 6a des Ventilkörpers 6 definierenden Abdeckkappe 24 verschlossen sein können. Alternativ können diese Magneteinsatzbohrungen unverschlossen bleiben oder in anderer Weise abgeschlossen sein.In the exemplary embodiment shown, the center pin 13c simultaneously serves to hold the second magnet 7a, while the first magnet 7b is arranged in the head section 6b of the valve body 6. The magnets 7a, 7b can be inserted there into corresponding bores, which can be closed, for example, by the center pin 13c with a sealing screw 23 and, on the part of the valve body 6, with a cover cap 24 that defines the outside 6a of the valve body 6. Alternatively, these magnetic insert bores can remain unlocked or be closed in some other way.

Im gezeigten Ausführungsbeispiel mündet die jeweilige Ventilauslassöffnung 12 in einem in den Figuren unteren Bereich der Ventilkammer 10 aus dieser aus und erstreckt sich radial nach außen und axial nach vorn bzw. außen, d.h. in den Figuren nach unten, durch den betreffenden Zylindermantelabschnitt 13a des Ventilsitzkörpers 13 hindurch, der in diesem Bereich z.B. konisch verjüngt gestaltet sein kann, wie gezeigt. Im gezeigten Beispiel sind mehrere Ventilauslassöffnungen 12 in Umfangsrichtung äquidistant verteilt vorgesehen. Die Anzahl der Ventilauslassöffnungen 12 kann der Anzahl an Ventildurchgangsöffnungen 9 entsprechen oder von dieser verschieden sein.In the exemplary embodiment shown, the respective valve outlet opening 12 opens out of the valve chamber 10 in a lower region in the figures and extends radially outwards and axially forwards or outwards, i.e. downwards in the figures, through the relevant cylinder jacket section 13a of the valve seat body 13, which in this area e.g. may be tapered as shown. In the example shown, a plurality of valve outlet openings 12 are provided equidistantly distributed in the circumferential direction. The number of valve outlet openings 12 may correspond to the number of valve through openings 9 or be different from this.

Im Normalzustand NS befindet sich der Ventilkörper 6 mit seinem Ringkragen 8 am inneren bzw. hinteren, d.h. in den Figuren oberen, Endbereich der Ventilkammer 10, wobei die jeweilige Ventildurchgangsöffnung 9 fluchtend der zugeordneten Ventileinlassöffnung 11 gegenüberliegt und in diesem Bereich der Druckkanal 21 mündet. Die Ventilauslassöffnungen 12 sind vollständig freigegeben, ohne dass der Ventilkörper 6 den von der Gesamtkonfiguration des Brausekopfs bestimmten Durchlassquerschnitt DQ der Fluidführung 4 beschränkt. Über den Fluideinlass 2 zugeführtes Fluid gelangt folglich in diesem Normalbetrieb des Brausekopfs über die Fluidführung 4 zum Brausestrahlaustritt 3, wo es als entsprechender Brausestrahl austritt. Genauer strömt hierbei das Fluid über die Ventileinlassöffnungen 11 und die Ventildurchgangsöffnungen 9 in die Ventilkammer 10 und von dort über die Ventilauslassöffnungen 12 in die Verteilkammer 20, von wo es sich auf die Strahlaustrittsöffnungen 19 verteilt.In the normal state N S , the valve body 6 with its ring collar 8 is located on the inner or rear, ie upper, end area of the valve chamber 10 in the figures, the respective valve passage opening 9 being flush with the associated valve inlet opening 11 and the pressure channel 21 opening in this area. The valve outlet openings 12 are completely released without the valve body 6 having the passage cross section D Q determined by the overall configuration of the shower head Fluid guide 4 limited. In this normal operation of the shower head, fluid supplied via the fluid inlet 2 consequently reaches the shower jet outlet 3 via the fluid guide 4, where it emerges as a corresponding shower jet. More precisely, the fluid flows here via the valve inlet openings 11 and the valve passage openings 9 into the valve chamber 10 and from there via the valve outlet openings 12 into the distribution chamber 20, from where it distributes itself onto the jet outlet openings 19.

Solange das Fluid im Wesentlichen unbehindert bzw. störungsfrei strömen kann, tritt in der Fluidführung 4 kein Überdruck auf. Da der Druckkanal 21 nicht im Hauptstrom der Fluidführung 4 liegt, ist er im Normalbetrieb des Brausekopfs nicht mit einem merklichen Fluiddruck belastet, und in jedem Fall bleibt eine dadurch ggf. auf den Ventilkörper 6 an seiner Stirnfläche 22 des Kopfabschnitts 6b in Richtung nach außen bzw. in den Figuren nach unten ausgeübte Fluiddruckkraft kleiner als die anziehende, gegenhaltende Magnetkraft FM der beiden Magnete 7a, 7b. Insbesondere nach längerer Betriebsdauer des Brausekopfs kann es durch kleinere Partikel und/oder durch Kalkablagerungen zu Verengungen bis hin zu Verstopfungen in der Fluidführung 4 und insbesondere im Bereich des Brausestrahlaustritts 3 kommen. Dies gilt besonders für Brauseköpfe, bei denen die Strahlaustrittsöffnungen 19 nur relativ geringe Durchlassquerschnitte besitzen, wie dies z.B. bei Sanitärbrausen der Fall ist, die einen sogenannten Fein- bzw. Nadelstrahl als Brausestrahl abgeben. Dadurch kann in der Fluidführung 4 ein Überdruck auftreten, d.h. ein zu hoher, überhöhter Fluiddruck, der höher ist als der Fluiddruck im normalen Brausebetrieb einschließlich üblicher Druckschwankungen z.B. bedingt durch schwankende Druckverhältnisse in einer vorgelagerten Fluidversorgung. Ein derartiger Überdruck ist unerwünscht und kann Schädigungen im Brausekopfgehäuse 1 verursachen. Dies wird durch das Überdruckventil 5 verhindert.As long as the fluid can flow essentially unhindered or without interference, no excess pressure occurs in the fluid guide 4. Since the pressure channel 21 is not in the main flow of the fluid guide 4, it is not loaded with a noticeable fluid pressure during normal operation of the shower head, and in any case one of the valve bodies 6 may remain on the end face 22 of the head section 6b in the outward or outward direction Fluid pressure force exerted downward in the figures is smaller than the attractive, opposing magnetic force F M of the two magnets 7a, 7b. Especially after a long period of operation of the shower head, smaller particles and / or limescale deposits can lead to constrictions or even blockages in the fluid guide 4 and in particular in the area of the shower jet outlet 3. This applies in particular to shower heads in which the jet outlet openings 19 have only relatively small passage cross sections, as is the case, for example, with sanitary showers which emit a so-called fine or needle jet as the shower jet. As a result, an overpressure can occur in the fluid guide 4, ie an excessively high, excessive fluid pressure which is higher than the fluid pressure in normal shower operation including normal pressure fluctuations, for example due to fluctuating pressure conditions in an upstream fluid supply. Such excess pressure is undesirable and can cause damage in the shower head housing 1. This is prevented by the pressure relief valve 5.

Wenn in der Fluidführung 4 ein Überdruck auftritt, beispielsweise in der Verteilkammer 20, führt dies zu einem entsprechenden Überdruck in der Ventilkammer 10 des an die Fluidführung 4 druckangekoppelten Überdruckventils 5. Der Überdruck in der Ventilkammer 10 drückt das Fluid auch in den Druckkanal 21, wodurch das Fluid mit dem entsprechenden Überdruck gegen die Stirnfläche 22 des Ventilkörpers 6 andrückt. Die Magnetanordnung 7 ist so ausgelegt, dass die von ihr in der Normalstellung NS des Ventilkörpers 6 bereitgestellte Magnetkraft FM kleiner ist als die entgegengesetzt wirkende Fluidüberdruckkraft, die das unter Überdruck stehende Fluid auf den Ventilkörper 6 an dessen Stirnfläche 22 ausübt. Dadurch löst sich der Ventilkörper 6 entgegen der Magnetkraft FM aus seiner Normalstellung NS und bewegt sich der Fluidüberdruckkraft folgend axial nach vorn bzw. außen, d.h. in den Figuren nach unten, bis zu seiner Überdruckstellung US, welche die der Normalstellung NS gegenüberliegende Endstellung des Ventilkörpers 6 darstellt. Diese Ausfahrbewegung des Ventilkörpers 6 entgegen der Magnetkraft FM sowie entgegen etwaiger Reibungskräfte und entgegen des auf die Außenseite 6a des Ventilkörpers 6 wirkenden Umgebungsdrucks kann bei entsprechender Systemauslegung zusätzlich durch einen Mitreißeffekt einer Restströmung an Fluid in der Ventilkammer 10 unterstützt werden. Es versteht sich, dass das Überdruckventil 5 auch dann anspricht, wenn der Brausekopf an eine Fluidversorgung angeschlossen wird, deren Fluidversorgungsdruck größer ist als derjenige, für den der Brausekopf ausgelegt ist.If an overpressure occurs in the fluid guide 4, for example in the distribution chamber 20, this leads to a corresponding overpressure in the valve chamber 10 of the overpressure valve 5 pressure-coupled to the fluid guide 4. The overpressure in the valve chamber 10 also pushes the fluid into the pressure channel 21, as a result of which presses the fluid with the corresponding overpressure against the end face 22 of the valve body 6. The magnet arrangement 7 is designed in such a way that the magnetic force F M it provides in the normal position N S of the valve body 6 is smaller than the oppositely acting fluid overpressure force that the fluid under pressure on the valve body 6 exerts on its end face 22. As a result, the valve body 6 detaches itself from the normal position N S against the magnetic force F M and moves axially forward or outward following the fluid overpressure force, ie downwards in the figures, up to its overpressure position U S , which is opposite the normal position N S Represents end position of the valve body 6. This extension movement of the valve body 6 against the magnetic force F M and against any frictional forces and against the ambient pressure acting on the outside 6a of the valve body 6 can additionally be supported by an entraining effect of a residual flow of fluid in the valve chamber 10 if the system is designed accordingly. It goes without saying that the pressure relief valve 5 also responds when the shower head is connected to a fluid supply whose fluid supply pressure is greater than that for which the shower head is designed.

In der Überdruckstellung US versperrt der Ventilkörper 6 mit seinem Ringkragen 8 die jeweilige Ventilauslassöffnung 12 vollständig oder alternativ partiell, wie dies z.B. in den Fig. 2 und 5 zu erkennen ist. Dadurch verringert der Ventilkörper 6 in dieser Überdruckstellung US den Durchlassquerschnitt DQ der Fluidführung 4 an dieser Stelle auf null oder jedenfalls auf einen gegenüber dem effektiven Durchlassquerschnitt der Fluidführung 4 im Normalbetrieb geringeren Wert. Dies hat zur Folge, dass sich der Volumenstrom des Fluids am Brauseaustritt 3 entsprechend stark verringert. Für den Benutzer ist dies leicht daran erkennbar, dass der Brausestrahl stoppt oder der Brausekopf am Brauseaustritt 3 nur noch tropft. Zudem kann der Benutzer den eingetretenen Überdruckfall daran erkennen, dass sich der Ventilkörper 6 in seine ausgefahrene Überdruckstellung US bewegt hat und daher nach vorn bzw. außen von der Außenseite der Strahlscheibe 18 vorsteht. Optional kann der Ventilkörper 6 zumindest in seinem von der Strahlscheibe 18 vorstehenden Bereich farblich vom umgebenden Strahlscheibenbereich abgesetzt gefertigt sein. Dies kann dem Benutzer das Erkennen noch leichter machen, dass das Überdruckventil 5 angesprochen hat.In the overpressure position U S, the valve body 6 with its ring collar 8 completely or alternatively partially blocks the respective valve outlet opening 12, as is shown, for example, in FIGS Fig. 2 and 5 can be seen. As a result, the valve body 6 in this overpressure position U S reduces the passage cross section D Q of the fluid guide 4 at this point to zero or in any case to a lower value than the effective passage cross section of the fluid guide 4 in normal operation. The consequence of this is that the volume flow of the fluid at the shower outlet 3 is correspondingly reduced. This can easily be recognized by the user by the fact that the shower jet stops or the shower head at the shower outlet 3 only drips. In addition, the user can recognize the overpressure case that has occurred because the valve body 6 has moved into its extended overpressure position U S and therefore projects forward or outward from the outside of the jet disk 18. Optionally, the valve body 6 can be made at least in its area protruding from the jet disk 18 in a color contrasting from the surrounding jet disk area. This can make it even easier for the user to recognize that the pressure relief valve 5 has responded.

Durch das mindestens teilweise Blockieren des bzw. der Ventilauslassöffnungen 12 kann in der Überdruckstellung US des Ventilkörpers 6 das Fluid nicht mehr oder jedenfalls nicht mehr in signifikanter Menge in die Verteilkammer 20 strömen, so dass sich dort anfangs vorhandener Überdruck durch Austreten des restlichen Fluids am Brauseaustritt 3 abbauen kann. Der Benutzer kann nun die erforderlichen Maßnahmen ergreifen, beispielsweise den Brausekopf insgesamt oder zumindest am Brauseaustritt 3 reinigen, d.h. die Ursache für den eingetretenen Überdruckfall beseitigen. Der Ventilkörper 6 bleibt hierbei zunächst in seiner Überdruckstellung US, da die beiden Magneten 7a, 7b nun so weit voneinander entfernt sind, dass sie keine oder jedenfalls keine nennenswerte Magnetkraft mehr auf den Ventilkörper 6 ausüben, d.h. die Magnetanordnung 7 ist nicht in der Lage, den Ventilkörper 6 selbsttätig in die Normalstellung NS zurückzuziehen. Nachdem der Benutzer die Ursache für den Fluidüberdruck beseitigt hat, drückt er den Ventilkörper 6 wieder in seine Normalstellung NS zurück, z.B. indem er mit einem Finger gegen die Außenseite 6a des Ventilkörpers 6 drückt. Mit anderen Worten bildet der Ventilkörper 6 im gezeigten Beispiel mit seinem Kopfabschnitt 6b quasi einen Ventilstift, den der Benutzer von der ausgefahrenen Überdruckstellung US wieder in die eingefahrene Normalstellung NS zurückdrücken kann.As a result of the at least partial blocking of the valve outlet opening (s) 12 in the overpressure position U S of the valve body 6, the fluid can no longer flow or at least no longer flow into the distribution chamber 20 in a significant amount, so that any excess pressure initially present there due to the escape of the remaining fluid Can remove shower outlet 3. The user can now take the necessary measures For example, clean the shower head as a whole or at least at the shower outlet 3, ie eliminate the cause of the overpressure that has occurred. The valve body 6 initially remains in its overpressure position U S , since the two magnets 7a, 7b are now so far apart that they no longer exert any or any significant magnetic force on the valve body 6, ie the magnet arrangement 7 is not able to withdraw the valve body 6 automatically into the normal position N S. After the user has eliminated the cause of the excess fluid pressure, he pushes the valve body 6 back into its normal position N S , for example by pressing with a finger against the outside 6a of the valve body 6. In other words, the valve body 6 in the example shown forms with its head section 6b a valve pin, which the user can push back from the extended overpressure position U S to the retracted normal position N S.

Die Magnetanordnung 7 hält dann mit ihrer Magnetkraft FM den Ventilkörper 6 wieder in seiner Normalstellung NS. Der Ventilkörper 6 gibt in der Normalstellung NS den Durchlassquerschnitt DQ der Fluidführung 4 wieder vollständig frei, im gezeigten Beispiel durch vollständiges Freigeben der Ventilauslassöffnungen 12. Damit ist der Brausekopf wieder einsatzbereit.The magnet arrangement 7 then holds the valve body 6 in its normal position N S with its magnetic force F M. The valve body 6 in the normal position N S completely clears the passage cross section D Q of the fluid guide 4, in the example shown by completely clearing the valve outlet openings 12. The shower head is thus ready for use again.

Wie die gezeigten und oben erwähnten Ausführungsbeispiele deutlich machen, stellt die Erfindung einen Brausekopf mit einer vorteilhaften Überdruckventilfunktion zur Verfügung. Schädigungen des Brausekopfs können durch das integrierte Überdruckventil vermieden werden. Das Überdruckventil kann in entsprechenden Realisierungen des Brausekopfs für eine Verringerung des Fluidvolumenstroms sorgen, so dass sich der Überdruck durch restliches Austreten von Fluid aus dem Brausekopf abbauen kann, vorzugsweise über den Brausestrahlaustritt, ohne dass am Überdruckventil selbst Fluid austritt. Der Benutzer kann in entsprechenden Realisierungen des Brausekopfs einen Überdruckfall leicht erkennen, die Ursachen für den Überdruck beseitigen und danach in eigener Kontrolle den Ventilkörper wieder von seiner Überdruckstellung in seine Normalstellung bringen.As the exemplary embodiments shown and mentioned above make clear, the invention provides a shower head with an advantageous pressure relief valve function. Damage to the shower head can be avoided by the integrated pressure relief valve. In corresponding implementations of the shower head, the pressure relief valve can ensure a reduction in the fluid volume flow, so that the excess pressure can be reduced by the remaining leakage of fluid from the shower head, preferably via the shower jet outlet, without fluid escaping at the pressure relief valve itself. In corresponding implementations of the shower head, the user can easily recognize an overpressure case, eliminate the causes of the overpressure and then bring the valve body back from its overpressure position to its normal position under its own control.

Es versteht sich, dass der erfindungsgemäße Brausekopf sowohl für beliebige Typen von Sanitärbrausen verwendbar ist als auch für nicht-sanitäre Brausen, wenn und insoweit Bedarf besteht, den Brausekopf vor einem etwaigen Fluidüberdruck in der Fluidführung zu schützen.It goes without saying that the shower head according to the invention can be used both for any types of sanitary showers and for non-sanitary showers, if and to the extent There is a need to protect the shower head from any fluid overpressure in the fluid guide.

Claims (8)

  1. Shower head, preferably for a sanitary shower, comprising
    - a shower head housing (1),
    - a fluid inlet (2) into the shower head housing,
    - a shower jet outlet (3) out of the shower head housing,
    - a fluid duct (4) within the shower head housing from the fluid inlet to the shower jet outlet, and
    - an overpressure valve (5) pressure-coupled to the fluid duct, including a movable valve body (6) which, in case of an overpressure within the fluid duct, moves from a normal position (NS) to an overpressure position (US),
    characterized in that
    - the valve body (6) is configured to be self-retaining in the overpressure position (Us) and returnable to the normal position (NS) by user operation, and/or
    - the valve body (6) acts position-dependent on a passage cross-section (DQ) of the fluid duct (4), wherein the valve body reduces the passage cross-section in the overpressure position (US) relative to the normal position (NS).
  2. Shower head according to claim 1, further characterized in that
    - the shower jet outlet comprises a plurality of jet outlet openings (19),
    - the fluid duct comprises a manifold chamber (20) upstream of the jet outlet openings, and
    - the valve body acts on the passage cross-section of the fluid duct between the fluid inlet and the manifold chamber.
  3. Shower head according to claim 1 or 2, further characterized in that
    - the valve body is cylindrical and movable within the shower head housing in axial direction (AR) and comprises a radially protruding annular collar (8) including at least one valve passage opening (9), and
    - the fluid duct comprises a valve chamber (10) in which the valve body with its annular collar is guided for axial movement, at least one valve inlet opening (11) leading into the valve chamber, and at least one valve outlet opening (12) leading out of the valve chamber,
    - wherein the valve body with its annular collar reduces a passage cross-section of the at least one valve passage opening in the overpressure position relative to the normal position.
  4. Shower head according to claim 3, further characterized in that the at least one valve inlet opening extends axially and the at least one valve passage opening extends axially and in the normal position of the valve body in alignment to the at least one valve inlet opening.
  5. Shower head according to claim 3 or 4, characterized in that the overpressure valve comprises a hollow cylindrical valve seat body (13) on which the valve body is held guided and in which the valve chamber is located, wherein the at least one valve outlet opening extends with radial directional component outwards through a cylinder surface section (13a) of the valve seat body.
  6. Shower head according to any one of claims 1 to 5, further characterized in that it comprises a jet disk (18) forming the shower jet outlet, and the valve body is located on a same side of the shower head housing as the jet disk.
  7. Shower head according to claim 6, further characterized in that the valve body in the overpressure position projects beyond the exterior side of the jet disk and in the normal position does not project beyond the exterior side of the jet disk.
  8. Shower head according to any one of claims 1 to 7, further characterized in that the overpressure valve has a magnet arrangement (7) which retains the valve body in the normal position by a magnetic force (FM) overridable by an overpressure in the fluid duct, wherein the magnetic force decreases in strength with increasing distance of the valve body from the normal position down to an irrelevance value in the overpressure position.
EP19152805.8A 2018-01-24 2019-01-21 Shower head with pressure relief valve Active EP3517211B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018201109.5A DE102018201109B3 (en) 2018-01-24 2018-01-24 Shower head with overpressure valve

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EP3517211B1 true EP3517211B1 (en) 2020-06-24

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US (1) US11059057B2 (en)
EP (1) EP3517211B1 (en)
CN (1) CN110064537B (en)
DE (1) DE102018201109B3 (en)
RU (1) RU2701933C1 (en)
ZA (1) ZA201900167B (en)

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ES2899217T3 (en) * 2018-07-20 2022-03-10 Nikles Tec Italia Srl Device for supplying a jet of water with safety valve

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Also Published As

Publication number Publication date
CN110064537A (en) 2019-07-30
EP3517211A1 (en) 2019-07-31
US11059057B2 (en) 2021-07-13
RU2701933C1 (en) 2019-10-02
US20190224696A1 (en) 2019-07-25
CN110064537B (en) 2021-11-19
DE102018201109B3 (en) 2018-12-27
ZA201900167B (en) 2019-08-28

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