EP2578319B1 - Pomme de douche - Google Patents

Pomme de douche Download PDF

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Publication number
EP2578319B1
EP2578319B1 EP12006844.0A EP12006844A EP2578319B1 EP 2578319 B1 EP2578319 B1 EP 2578319B1 EP 12006844 A EP12006844 A EP 12006844A EP 2578319 B1 EP2578319 B1 EP 2578319B1
Authority
EP
European Patent Office
Prior art keywords
shower head
water
mixing chamber
section
nozzle channel
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
EP12006844.0A
Other languages
German (de)
English (en)
Other versions
EP2578319A1 (fr
Inventor
Thomas Vorel
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.)
Grohe AG
Original Assignee
Grohe AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Grohe AG filed Critical Grohe AG
Publication of EP2578319A1 publication Critical patent/EP2578319A1/fr
Application granted granted Critical
Publication of EP2578319B1 publication Critical patent/EP2578319B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0425—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid without any source of compressed gas, e.g. the air being sucked by the pressurised liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, 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
    • B05B1/18—Roses; Shower heads

Definitions

  • the invention relates to a shower head for sanitary showers according to the preamble of patent claim 1.
  • shower heads of sanitary showers are suitable for dispensing different spray types.
  • aerated jets often referred to as champagne jars, are known in which air bubbles are added to the jet of water.
  • the in the CH 686 409 A5 disclosed hand shower has in the handle a water supply line with a nozzle forming flow restrictor, which opens like the existing air supply line in a widening injector, wherein subsequent to the injector a Druck unnecessary- and mixing space is arranged, which is directly limited by the jet former. Since the shower head is intended only to deliver a single spray and it is also a single-wall shower head, the construction in terms of height are no requirements to make. From the EP 1 020 571 A1 is a hand shower with a working in the manner of a water jet pump air intake known. The air intake device can be switched on and off as desired.
  • the flow cross-section for the liquid is expandable when switching off the air intake.
  • the ventilation device is provided in the handle of the hand shower, to which an extended mixing chamber connects.
  • a shower head for the production of ventilated jets known which has a plurality of mixing chambers with funnel-shaped inlets and a central channel for the air intake.
  • a shower head known which consists of a water supply line forming handle and at least one mounted above the water outlet opening shower screen.
  • the water supply has a flow restrictor, which opens into an injector.
  • An incoming air supply line in the handle also opens into the injector, followed by a chronically expanding pressure build-up and mixing space.
  • a shower device with a water-injecting portion which is formed from a nozzle plate having a plurality of nozzles and a cover with outlet openings.
  • the nozzle plate and the cover both have the same number of openings and are arranged at a fixed distance from each other.
  • the nozzles and the outlet openings are tapered to provide a small diameter in the direction of the outlet side.
  • the object of the invention is to improve a shower head with different jet types, which has an effective aerated jet at a reduced water flow rate.
  • a shower head for a sanitary shower with a shower head housing which comprises a jet former with a plurality of jet outlet openings for generating different jet types, is provided. Furthermore, at least one water guide is arranged in the shower head housing, passes through the water to the jet outlet openings or a certain number of jet outlet openings. For generating ventilated jets or for producing an air-water mixture, at least one ventilation device, which comprises an air inlet opening and an air channel, is provided in the shower head. Furthermore, the shower head has a mixing chamber, which is in fluid communication with the water guide and the ventilation device or the air duct.
  • At least one nozzle channel is provided for connecting the water guide and the mixing chamber.
  • the nozzle channel has a constant flow cross-section.
  • the outlet opening whose shape corresponds to that of the flow cross-section, can be arranged before or within the mixing chamber.
  • the mixing chamber formed in the form of a tube having a relation to the nozzle channel larger or abruptly extended flow area. Furthermore, the mixing chamber is shaped so that it tapers in the flow direction of the water to its end.
  • the air intake principle of the shower head according to the invention works similar to a jet pump. This has two inputs and one output and consists in principle of two nested tubes.
  • a jet of water passes under the full line pressure from the nozzle channel into the mixing chamber, ie a pipe with a larger diameter.
  • the nozzle channel is referred to here as a driving nozzle and the mixing chamber as a catching nozzle.
  • the jet of water breaks and the friction and turbulence with the surrounding air cause mixing. In this process, kinetic energy is transferred from the water jet to the surrounding air, providing an effective delivery mechanism.
  • the suction power is directly proportional to the water flow.
  • the cross-sectional shape of the nozzle channel or the outlet opening of the nozzle channel have a significant effect on the degree of aeration of the effervescent jets.
  • the nozzle channel and / or the outlet opening of the nozzle channel have a polygonal, in particular a rectangular or square cross-section. Because of this cross-sectional formation better air intake through the water droplets is possible at the point of entry of the water into the mixing chamber, as the jet is better ruptured and breaks up into finer droplets.
  • the size ratios of nozzle channel and mixing chamber flow area also play a role for the promotion or for the intake of air and the degree of air-water mixing. It has been shown that a very good air mixing is given at a size ratio of the flow cross section of the nozzle channel to the smallest flow cross section of the mixing chamber of less than 1: 3, in particular 1: 3.7.
  • a diffuser is arranged after the mixing chamber. This connects to the narrowest point in the flow cross-section of the mixing chamber.
  • the diffuser By means of the diffuser, the flow of aerated water is slowed down and increases the fluid pressure.
  • the diffuser has a flow cross-section which widens continuously or discontinuously over its length.
  • the diffuser can in this case be mechanically connected to the mixing chamber or be provided as a component in one piece together with the mixing chamber.
  • a further embodiment of the invention provides that an annular chamber or water distribution chamber is arranged in front of the jet outlet openings of the shower head for distribution of the fluid mixture or water-air mixture.
  • the jet outlet openings, through which the water-air mixture is to be dispensed are arranged annularly around a center of the jet former.
  • a distribution chamber must be provided in the flow direction to the mixing chamber or the diffuser, which ensures the connection of the mixing chamber to all jet outlet openings.
  • a plurality of nozzle channels and mixing chambers are provided for the uniform supply of the annular chamber or water distribution chamber.
  • the desired flow rate of water-air mixture over a larger number of nozzle channels and mixing chambers is achievable, while increasing the flow cross-sections does not promise sufficient air-water mixture and concomitant water savings.
  • the nozzle channel as a single part or assembly that can be used sealed or screwed into the water supply. Since investigations have also shown that the degree of ventilation is also dependent on the distance of the outlet opening of the nozzle channel and the smallest flow cross section of the mixing chamber, thus this distance can be varied and adjusted depending on the desired spray pattern and ventilation level.
  • Fig. 1 shows a section through a shower head 1 according to the invention.
  • the shower head 1 comprises a showerhead housing 2, in which on the underside a jet former 3 or a jet-forming unit is arranged, which or a plurality of jet outlet openings 31, 32, 33 has.
  • the jet outlet openings 31, 32, 33 have different shapes and / or sizes and are associated with different water guides 4 or inflow channels, which can be selectively controlled via an actuator 10.
  • different jet types such as individual jets, which are discharged through the water outlet openings 31, can be realized.
  • ventilated jets which are discharged through the water outlet openings 33 in the illustrated embodiment in the foreground.
  • a water guide 4 is arranged in the shower head 1, which is in communication with a mixing chamber 6.
  • the mixing chamber 6 communicates with an air channel 5 in connection, the air intake opening is arranged in the showerhead housing 2.
  • the mixing chamber 6 has an opening 62, the shape of which can be adapted to the respectively required geometry of the water guide 4 or the shower head housing 2.
  • the water for the aerated jets passes through a nozzle channel 7, in which the flow rate of the water is extremely increased due to the narrowed cross section, from the water guide 4 into the mixing chamber 6.
  • the enrichment of the water with air takes place according to the principle of action of a water jet pump.
  • the water serves as a driving medium, which flows at high speed from the outlet opening 71 of the nozzle channel 7 and the motive nozzle in the mixing chamber 6 - or also called catching nozzle - flows. There, the water meets the air located here, which serves as a suction medium.
  • a suction medium By internal friction and turbulence, a shear stress in the boundary layer between the fast water and the much slower suction medium air, so that the suction medium is accelerated and entrained. Since the air in the mixing chamber 6 is accelerated, a pressure drop also arises for the suction medium, so that air is conveyed from the air duct 5.
  • the velocity of the water-air mixture is increased up to the smallest flow cross-section 61 at the end of the mixing chamber 6 and then again reduced in a diffuser 8, the cross-section of which continuously widens in the flow direction of the fluid mixture.
  • the pressure energy of the water-air mixture is increased simultaneously.
  • the water-air mixture enters a water distribution chamber 9, which is in communication with the associated water outlet openings 33.
  • the water-air mixture can be optimally distributed over the entire desired Strahltruckner design. Due to the geometry of the nozzle channel 7, the outlet opening 71, the mixing chamber 6 and the air channel 5, an efficient enrichment of the water with air is possible via the principle described above despite minimum height of the shower head 1.
  • Fig. 2 shows the detail II with the mixing chamber 6, nozzle channel 7 and diffuser 8 in an enlarged view.
  • Mixing chamber 6 and diffuser 8 are made in one piece in the example shown.
  • the nozzle channel 7 is in turn made in one piece with the water guide 4.
  • the mixing chamber 6 and the associated opening 62 for the air intake are adapted to the geometric conditions. Alternatively, the opening could also be provided as a radial opening in the mixing chamber wall.

Landscapes

  • Nozzles (AREA)
  • Bathtubs, Showers, And Their Attachments (AREA)

Claims (10)

  1. Pomme de douche (1) sanitaire comportant :
    - un corps de pomme de douche (2),
    - un formateur de jet ayant un ensemble d'orifices de sortie de jet (31, 32, 33),
    - au moins un guide d'eau (4) installé dans le corps de pomme de douche (2) par lequel l'eau arrive aux orifices de sortie de jet (31, 32, 33) ou dans un certain nombre déterminé d'orifices de sortie de jet (31, 32, 33),
    - au moins une installation d'aération qui comporte un orifice d'entrée d'air et un canal d'air (5), et au moins une chambre de mélange (6) dans le corps de pomme de douche (2) qui communique avec le guide d'eau (4) et l'installation d'aération ou le canal d'air (5),
    - au moins un canal de buse (7) est prévu entre le guide d'eau (4) et la chambre de mélange (6), cette chambre de mélange (6) étant sous la forme d'un tube dont la section de passage s'élargit de façon discontinue par rapport à celle du canal de buse (7), et
    - la chambre de mélange (6) va en diminuant jusqu'à son extrémité dans le sens de passage de l'eau,
    caractérisée en ce que
    le canal de buse (7) et/ou son orifice de sortie (71) a une section polygonale, notamment une section rectangulaire ou carrée.
  2. Pomme de douche (1) selon la revendication 1,
    caractérisée en ce que
    l'orifice de sortie (71) du canal de buse (7) est en amont de la chambre de mélange (6) ou dans celle-ci.
  3. Pomme de douche (1) selon la revendication 1 ou 2,
    caractérisée en ce que
    chaque section de passage de la chambre de mélange (6) s'élargit de façon discontinue par rapport à la section de passage du canal de buse.
  4. Pomme de douche (1) selon l'une des revendications précédentes, caractérisée par
    un diffuseur (8) relié à la chambre de mélange (6) ou relié à la plus petite section de passage (61) de la chambre de mélange (6), ce diffuseur allant en s'agrandissant vers son extrémité dans le sens de passage de l'eau.
  5. Pomme de douche (1) selon la revendication 4,
    caractérisée en ce que
    la chambre de mélange (6) et le diffuseur (8) sont en une seule pièce.
  6. Pomme de douche (1) selon l'une des revendications précédentes, caractérisée en ce que
    le rapport entre la section de passage du canal de buse (7) et la plus petite section de passage (61) de la chambre de mélange (6) est inférieur à 1/3.
  7. Pomme de douche (1) selon l'une des revendications précédentes, caractérisée par
    une chambre annulaire ou une chambre de distribution d'eau (9) pour répartir le mélange de liquide ou le mélange eau-liquide sortant de la chambre de mélange (6) ou du diffuseur (8), en amont des orifices de sortie de jet (33) du pommeau de douche (1) selon le sens de passage.
  8. Pomme de douche (1) selon la revendication 7,
    caractérisée en ce que
    chaque chambre annulaire ou chambre de distribution d'eau (9), a plusieurs canaux de buses (7) et des chambres de mélange (6).
  9. Pomme de douche (1) selon l'une des revendications précédentes, caractérisée en ce que
    le canal de buse (7) est une seule pièce ou une unité distincte installée ou vissée de manière étanche dans le guide d'eau (4).
  10. Pomme de douche (1) selon l'une des revendications précédentes, caractérisée en ce que
    la distance entre l'orifice de sortie (71) du canal de buse (7) et la plus petite section de passage (61) de la chambre de mélange (6) est réglable.
EP12006844.0A 2011-10-06 2012-10-02 Pomme de douche Active EP2578319B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011114945A DE102011114945A1 (de) 2011-10-06 2011-10-06 Brausekopf

Publications (2)

Publication Number Publication Date
EP2578319A1 EP2578319A1 (fr) 2013-04-10
EP2578319B1 true EP2578319B1 (fr) 2017-07-12

Family

ID=47018713

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12006844.0A Active EP2578319B1 (fr) 2011-10-06 2012-10-02 Pomme de douche

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EP (1) EP2578319B1 (fr)
DE (1) DE102011114945A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015002780A1 (de) * 2015-03-06 2016-09-22 Grohe Ag Brause mit Düse zur Luftbeimischung
CN107595179A (zh) * 2017-10-17 2018-01-19 北京沐羽科技有限公司 应用雾化水的洗手装置及雾化水产生模块
CN110841812A (zh) * 2019-11-12 2020-02-28 九牧厨卫股份有限公司 一种水压驱动的喷枪花洒
DE102020118091A1 (de) 2020-07-09 2022-01-13 Lixil Corporation Verfahren zur additiven Fertigung eines Auslaufelementes

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2361688A1 (fr) * 2010-02-18 2011-08-31 Toto Ltd. Appareil de douche

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE87648C (fr) *
JPS5286858A (en) * 1976-01-10 1977-07-19 Tsd Kk Shower
US5111994A (en) 1987-07-30 1992-05-12 Emhart Inc. Flow booster apparatus
CH686409A5 (de) 1992-12-11 1996-03-29 Jorg Mafli Brausekopf.
IT1305193B1 (it) * 1998-11-19 2001-04-10 Gevipi Ag Testa di doccia per erogare un getto di acqua aereato mediante effettoventuri.
DE19901704A1 (de) 1999-01-18 2000-08-03 Hansgrohe Ag Sanitärgegenstand, insbesondere Handbrause, mit einer Umschalteinrichtung zur Beeinflussung einer Flüssigkeitsströmung
US7427037B2 (en) * 2002-12-13 2008-09-23 Frazee John S Anti-clogging showerhead device
WO2011039647A2 (fr) * 2009-09-29 2011-04-07 Jmi Group Limited Pomme de douche

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2361688A1 (fr) * 2010-02-18 2011-08-31 Toto Ltd. Appareil de douche

Also Published As

Publication number Publication date
EP2578319A1 (fr) 2013-04-10
DE102011114945A1 (de) 2013-04-11

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