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WO2010061342A1 - Fixation de douche - Google Patents

Fixation de douche Download PDF

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Publication number
WO2010061342A1
WO2010061342A1 PCT/IB2009/055337 IB2009055337W WO2010061342A1 WO 2010061342 A1 WO2010061342 A1 WO 2010061342A1 IB 2009055337 W IB2009055337 W IB 2009055337W WO 2010061342 A1 WO2010061342 A1 WO 2010061342A1
Authority
WO
WIPO (PCT)
Prior art keywords
attachment
water
shower
insert
bore
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.)
Ceased
Application number
PCT/IB2009/055337
Other languages
English (en)
Inventor
Guy Cinnamon
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.)
ZGP Ltd
Original Assignee
ZGP Ltd
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 ZGP Ltd filed Critical ZGP Ltd
Publication of WO2010061342A1 publication Critical patent/WO2010061342A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/04—Water-basin installations specially adapted to wash-basins or baths
    • E03C1/0408—Water installations especially for showers
    • 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
    • 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

Definitions

  • the present invention relates to a shower attachment.
  • the shower attachment to which the present invention relates is an article that can either be mounted on a wall or be attached to the end of a flexible hose.
  • the attachment has a coupling for connection to the water supply and at the other end it has a spray head from which the water emerges as a spray or as multiple jets.
  • a powerful shower is highly desirable but consumes more water and is therefore wasteful of resources.
  • a device known as a fluidic amplifier or an ejector valve that aerates the water discharged from the spray head.
  • a jet or spray augmented in this way by the addition of air can reduce water consumption without detracting from the perceived power of the shower.
  • shower attachments incorporating such water saving devices have had the problem that water may collect within them after the water supply has been turned off. In certain environments, this presents a health hazard in that it can be a cause of spreading of legionella bacteria.
  • the present invention seeks therefore to provide a shower attachment that offers the advantage of reduced water consumption while ensuring full drainage of the attachment at the end of each use. Summary of the invention
  • a shower attachment comprising a hollow body having a coupling at one end for connection to a water supply and a spray head at the opposite end, characterised in that a fluidic amplifier is located at the coupling end of the body, the fluidic amplifier having an axially extending bore which is not uniformly cylindrical and through which water flows from the water supply to the spray head, and a radially extending bore which at one end communicates with the axially extending bore at a region where the diameter of the latter bore increases and at its other end communicates with the ambient air, the radially extending bore serving to introduce air into the water flowing through the shower attachment when the attachment is in use and serving to allow water to drain from the shower attachment when the attachment is not in use.
  • the fluidic amplifier comprises a cylindrical insert which is formed with the axial and radial bores and which is inserted into the coupling for the water supply and a hole is formed in the body of the attachment to align with the radial bore of the insert.
  • Interengaging formations are preferably provided on the insert and the hollow body to ensure that the insert is always in the correct orientation for proper alignment.
  • Figure 1 is a sectional of a shower attachment of the invention with its parts separated
  • Figure 2 is a section through the shower attachment of Figure 1 in its assembled state
  • Figure 3 is a perspective view of the fluidic amplifier insert shown in Figures 1 and 2.
  • the shower attachment of the invention is assembled from four separate parts, namely a hollow elongate main body 10, a perforated plate 12 serving as the spray head, a fluidic amplifier insert 14 and a small blanking plug 16 which hides a metallic screw 17 that holds the perforated plate 12 onto the body 10. All of these parts can be manufactured as plastics mouldings and may if desired be metal coated.
  • the hollow body 10 has a threaded coupling 18 at its end remote from the spray head to connect to the water supply, which may either be a fixed pipe in the case of a wall mounted shower or flexible hose in the case of the illustrated hand held shower attachment.
  • a hole 20 is also formed in the body 10 near the threaded coupling 18.
  • the fluidic amplifier insert 14 has a stepped axially extending bore of which the section with the larger diameter opens into the interior of the hollow body 10.
  • a radial bore 24 intersects the larger section of axial bore 22 near the step where the bore widens.
  • the transition need not in fact be stepped and the axial bore may be shaped as a Venturi.
  • the purpose of the hole 20 in the body of the handle 10 is to allow the radial bore 24 of the fluidic amplifier insert 14 to communicate with the outside air and it is important to ensure correct alignment when the insert 14 is driven into the end of the body 10, as shown in Figure 2.
  • the drawings also show that the insert 14 has an enlarged or flanged end to overlie the end of the coupling 18, thereby avoiding the need for a separate washer to establish a seal between the coupling 18 and the pipe to which it is connected.
  • the insert 14 is ideally a tight fit in the end of the hollow body 10 so that no air or water can pass between the insert 14 and the body 10. In practice, however, because of manufacturing tolerances, it may not be possible to achieve consistently a good water-tight fit between these two components and for this reason it is preferred to form grooves 32 and 34 on the exterior of the insert 14 to receive O-rings 36 and 38 to provide an effective seal both above and below the level of the hole 20 in the main body 10.
  • any water remaining in the attachment at the end a period of use will flow towards the insert 14.
  • the radial bore 24 and the hole 20 will act to allow trapped water to drain away without collecting in the hollow body 10. If the attachment were left tilted counter- clockwise from this position, the water would run to the spray head and would drain through the perforated plate 12. By thus preventing stagnant water from collecting within the shower attachment in between periods of use, the invention reduces the risk of such water becoming contaminated with bacteria, such as legionella.
  • the main body 10 of the illustrated attachment needs to be specifically designed to receive the fluidic amplifier insert 14. In particular, it needs to have a cylindrical bore at one end, a hole 20 to communicate with the radial bore of the insert and a locating formation such as the notch 30. It is however alternatively possible to implement the invention as a retrofit to an existing shower attachment by providing an adapter that converts a conventional shower attachment to one that aerates the water stream.
  • the adapter would have male and female screw couplings at its opposite ends to enable it to be fitted between the supply pipe or hose and the shower attachment.
  • the adapter may either house a fluidic amplifier insert 14 and have a hole communicating with its radial bore 24 or it may itself be designed to serve as the fluidic amplifier, the bores 20 and 24 being drilled in the body of the adapter.

Landscapes

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

Abstract

L'invention porte sur une fixation de douche, qui comprend un corps creux (10) comportant un accouplement (18) à une extrémité pour la liaison à une alimentation en eau et une tête de pulvérisation (12) à l'extrémité opposée. Un amplificateur fluidique (14) est disposé à l'intérieur de l'extrémité d'accouplement du corps (10). L'amplificateur fluidique (14) comporte un perçage axial (22) qui n'est pas uniformément cylindrique, et à travers lequel de l'eau s'écoule de l'alimentation en eau à la tête de pulvérisation (12), et un perçage radial (24), qui, à une extrémité, communique avec le perçage axial (22) dans une région où le diamètre du perçage axial (22) augmente, et qui, à son autre extrémité, communique avec l'air ambiant. Le perçage radial (24) sert à introduire de l'air dans l'eau s'écoulant à travers le perçage axial (24) lorsque la fixation de douche est utilisée et à permettre à de l'eau d'être évacuée de la fixation lorsque la fixation n'est pas utilisée.
PCT/IB2009/055337 2008-11-26 2009-11-25 Fixation de douche Ceased WO2010061342A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0821596A GB2466920A (en) 2008-11-26 2008-11-26 Shower attachment
GB0821596.4 2008-11-26

Publications (1)

Publication Number Publication Date
WO2010061342A1 true WO2010061342A1 (fr) 2010-06-03

Family

ID=40230850

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2009/055337 Ceased WO2010061342A1 (fr) 2008-11-26 2009-11-25 Fixation de douche

Country Status (2)

Country Link
GB (1) GB2466920A (fr)
WO (1) WO2010061342A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2470805A (en) * 2010-03-31 2010-12-08 Zgp Ltd Shower attachment
WO2012012960A1 (fr) * 2010-07-29 2012-02-02 Yu Zhangjun Pomme de douche portable comportant un couvercle d'entrée d'air
WO2012057839A1 (fr) * 2010-10-29 2012-05-03 Brice John L Appareil et procédé de compensateur de pression pour soupape à venturi
WO2012149967A1 (fr) * 2011-05-04 2012-11-08 Innovations 28 Ltd Unité de douche et zone de douche

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06315654A (ja) * 1993-04-30 1994-11-15 Nobuyuki Ishimatsu シャワーヘッド用節水器
JPH1043641A (ja) * 1996-08-01 1998-02-17 Takeshi Watanabe シャワーヘッド用ジョイントおよびシャワー装置
EP1142646A1 (fr) * 2000-04-05 2001-10-10 John L. M.S. P.E. Brice, Ph.D. Vanne de sous-pression avec venturi pour la conservation d'eau
JP2002102100A (ja) * 2000-10-04 2002-04-09 Toto Ltd シャワー装置
WO2007069616A1 (fr) * 2005-12-13 2007-06-21 Saiseiko Co., Ltd. Structure produisant des bulles et pomme de douche dotee de cette structure
US20090266430A1 (en) * 2008-04-24 2009-10-29 Xiamen Lota International Co., Ltd. Air injection assembly for showers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11300234A (ja) * 1998-04-22 1999-11-02 Mjp Kaihatsu Kk 活性水形成装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06315654A (ja) * 1993-04-30 1994-11-15 Nobuyuki Ishimatsu シャワーヘッド用節水器
JPH1043641A (ja) * 1996-08-01 1998-02-17 Takeshi Watanabe シャワーヘッド用ジョイントおよびシャワー装置
EP1142646A1 (fr) * 2000-04-05 2001-10-10 John L. M.S. P.E. Brice, Ph.D. Vanne de sous-pression avec venturi pour la conservation d'eau
JP2002102100A (ja) * 2000-10-04 2002-04-09 Toto Ltd シャワー装置
WO2007069616A1 (fr) * 2005-12-13 2007-06-21 Saiseiko Co., Ltd. Structure produisant des bulles et pomme de douche dotee de cette structure
US20090266430A1 (en) * 2008-04-24 2009-10-29 Xiamen Lota International Co., Ltd. Air injection assembly for showers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Derwent World Patents Index; AN 1998-187497, XP002569373, "Shower head joint for shower apparatus in bathroom - includes nozzle, connected to hose coupling pipe, provided inside head fixing drain which has air introduction hole" *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2470805A (en) * 2010-03-31 2010-12-08 Zgp Ltd Shower attachment
GB2470805B (en) * 2010-03-31 2011-05-18 Zgp Ltd Shower attachment with ejector valve
WO2012012960A1 (fr) * 2010-07-29 2012-02-02 Yu Zhangjun Pomme de douche portable comportant un couvercle d'entrée d'air
WO2012057839A1 (fr) * 2010-10-29 2012-05-03 Brice John L Appareil et procédé de compensateur de pression pour soupape à venturi
WO2012149967A1 (fr) * 2011-05-04 2012-11-08 Innovations 28 Ltd Unité de douche et zone de douche

Also Published As

Publication number Publication date
GB0821596D0 (en) 2008-12-31
GB2466920A (en) 2010-07-14

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