WO1992011948A1 - A device for shower heads - Google Patents

A device for shower heads Download PDF

Info

Publication number
WO1992011948A1
WO1992011948A1 PCT/SE1991/000919 SE9100919W WO9211948A1 WO 1992011948 A1 WO1992011948 A1 WO 1992011948A1 SE 9100919 W SE9100919 W SE 9100919W WO 9211948 A1 WO9211948 A1 WO 9211948A1
Authority
WO
WIPO (PCT)
Prior art keywords
shower head
valve
set forth
shower
air duct
Prior art date
Application number
PCT/SE1991/000919
Other languages
French (fr)
Inventor
Stig Lundberg
Original Assignee
Lundberg & Son Vvs-Produkter Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20381554&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1992011948(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Lundberg & Son Vvs-Produkter Ab filed Critical Lundberg & Son Vvs-Produkter Ab
Priority to DE69125028T priority Critical patent/DE69125028T2/en
Priority to EP92903044A priority patent/EP0566635B1/en
Publication of WO1992011948A1 publication Critical patent/WO1992011948A1/en

Links

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 present invention relates to a device in shower heads and more particularly, a device for limiting the amount of water wing through the shower head.
  • shower head is meant a device transforming a uniform flow of water into a shower, which device may consist for instance, of a so called hand shower.
  • the single figure of the drawing is a schematic sectional side view of a portion of a shower grip comprising the device of the invention.
  • the rear end of the shower grip 1, not shown in the figures, is provided in the usual way with a connection for a hose which in turn is connected to a water conduit provided with a tap.
  • the front end of the shower grip 1 is provided with a sprayer 2.
  • the shower grip 1 is provided with a duct 3 through which water is intended to flow in the direction of the arrow A.
  • the duct 3 suitably has a circular cross section and at its left end has a restriction 4 before terminating in a substantially cone-shaped space 5.
  • An ejector valve 7 with a substantially circular cross section is integrated in or, alternatively, detachably
  • valve 7 inserted in the duct 3 and is prevented from turning therein owing to the restriction 4 and the front end of the valve 7 interacting therewith not being circular in shape.
  • the rear end of the valve 7 is provided with an annular resilient flange 8 which sealingly bears on the side walls of the duct 3.
  • the valve 7 may be provided with means for retaining same axially in the duct 3, however, usually this is not required, since the water pressure acting on the flange B urges the valve against the restriction 4.
  • the ejector valve 7 which has no movable parts, is provided with an axial duct consisting of coaxial subducts 9a and 9b. the cross sections of which are smaller than that cf the duct 3, thereby limiting the water flow passing through the valve.
  • the duct 9b is delimited by a metal tube attached in the valve 7 which is suitably made of plastic, the left-hand end of the metal tube protruding into the subduct 9a having the larger cross section.
  • a radial air duct 10 in the side wall of the valve 7.
  • the extension of the central axis of the duct 10 is located in the same plane as, or at a short
  • the inlet of the duct 10 is located at a great distance from the hole 6 in the side wall of the grip 1, suitably diametrically opposed same, as appears from the figure.
  • the inlet of the duct 10 communicates with the annular space 11 formed between the valve 7 and the side wall of the duct 3, which space is filled with air and extends between the restriction 4 and the flange 8.
  • the water flow fed through the duct 9b in the direction of the arrow A is mixed with the air flow induced through the duct 10 by means of the ejector effect in the area immediately after the left-hand end of the tube 9b.
  • the water/air flow passes through the duct 9 and further into the space 5 and is then pressed out through the sprayer.
  • a desired admixture of air of 20 - 30% to the water is achieved. This essentially gives the same showering effect as with water only as well as softer sprays, while reducing water consumption by 20 - 30%.
  • Owing to the duct 9b having a substantially smaller cross section than duct 3 water consumption is further reduced, an totally more than 50% and as much as 70% of water consumption may be saved as compared to conventional shower grips with substantially retained showering effect.
  • the hole 6 is covered by a finger of the hand holding the shower grip 11. If the hole 6 is covered
  • valve 7 is located as close to the sprayer as possible. The reason is that the ejector effect of the valve 7 will be better, since the point of mixture between water and air is located near the outlet for the water/air mixture, and that on shutting off the water flow to the shower grip 1 there will be a small amount of water therein downstream of the valve, which reduces the risk of water being spilt.

Landscapes

  • Nozzles (AREA)
  • Bathtubs, Showers, And Their Attachments (AREA)
  • Domestic Plumbing Installations (AREA)
  • Percussion Or Vibration Massage (AREA)

Abstract

A device limiting the amount of water flowing through a shower head (1) comprises an ejector valve (7) integrated in the shower head, which ejector valve admixes air to the water flow fed to the outlet (2) of the shower head.

Description

A DEVICE FOR SHOWER HEADS
DESCRIPTION
Technical field
The present invention relates to a device in shower heads and more particularly, a device for limiting the amount of water wing through the shower head. In the present context, shower head is meant a device transforming a uniform flow of water into a shower, which device may consist for instance, of a so called hand shower.
Prior art
It is desirable, in various situations, to limit water consumption in order to save water and energy, and this also applies to showering of, for instance, the human body. Such a limitation may be made by shutting off or reducing the supply of water to the shower head, for example, during soaping, or by providing the shower head sprayer with very small holes. In the first instance, the water tap has to be manipulated repeatedly, which is troublesome, or the speed of the jet of shower water will be too low to permit effective showering. In the second instance, the speed of the jet of shower water will be too high for showering to be reasonably effective, which is experienced as unpleasant. Description of the invention
It is an object of the present invention to eliminate, at least partly, the disadvantages of prior art shower heads and to provide a shower head by means of which water consumption may be limited without the water having to be shut off and without showering becoming ineffective.
This object is achieved by the device of the invention being provided with the features stated in the characterizing portion of claim 1.
Other objects and advantages of the invention appear more clearly in the dependent claims and in the following detailed description of a preferred embodiment of the device of the invention. Description of the figures
The single figure of the drawing is a schematic sectional side view of a portion of a shower grip comprising the device of the invention.
The rear end of the shower grip 1, not shown in the figures, is provided in the usual way with a connection for a hose which in turn is connected to a water conduit provided with a tap. The front end of the shower grip 1 is provided with a sprayer 2.
The shower grip 1 is provided with a duct 3 through which water is intended to flow in the direction of the arrow A. The duct 3 suitably has a circular cross section and at its left end has a restriction 4 before terminating in a substantially cone-shaped space 5. In the side wall of grip 1 there is a circular hole 6.
An ejector valve 7 with a substantially circular cross section is integrated in or, alternatively, detachably
inserted in the duct 3 and is prevented from turning therein owing to the restriction 4 and the front end of the valve 7 interacting therewith not being circular in shape. The rear end of the valve 7 is provided with an annular resilient flange 8 which sealingly bears on the side walls of the duct 3. The valve 7 may be provided with means for retaining same axially in the duct 3, however, usually this is not required, since the water pressure acting on the flange B urges the valve against the restriction 4.
The ejector valve 7, which has no movable parts, is provided with an axial duct consisting of coaxial subducts 9a and 9b. the cross sections of which are smaller than that cf the duct 3, thereby limiting the water flow passing through the valve. The duct 9b is delimited by a metal tube attached in the valve 7 which is suitably made of plastic, the left-hand end of the metal tube protruding into the subduct 9a having the larger cross section.
In the area in which the duct 9b transforms into the duct 9a there is provided a radial air duct 10 in the side wall of the valve 7. The extension of the central axis of the duct 10 is located in the same plane as, or at a short
distance from, the left-hand end of the tube 9b. The inlet of the duct 10 is located at a great distance from the hole 6 in the side wall of the grip 1, suitably diametrically opposed same, as appears from the figure. The inlet of the duct 10 communicates with the annular space 11 formed between the valve 7 and the side wall of the duct 3, which space is filled with air and extends between the restriction 4 and the flange 8.
The operation of the device according to the invention will now be briefly discussed.
The water flow fed through the duct 9b in the direction of the arrow A is mixed with the air flow induced through the duct 10 by means of the ejector effect in the area immediately after the left-hand end of the tube 9b. The water/air flow passes through the duct 9 and further into the space 5 and is then pressed out through the sprayer. By appropriate dimensioning of the valve 7 and the grip 1 a desired admixture of air of 20 - 30% to the water is achieved. This essentially gives the same showering effect as with water only as well as softer sprays, while reducing water consumption by 20 - 30%. Owing to the duct 9b having a substantially smaller cross section than duct 3, water consumption is further reduced, an totally more than 50% and as much as 70% of water consumption may be saved as compared to conventional shower grips with substantially retained showering effect.
On induction of air into the duct 10, air is induced in the space 11 through the hole 6. The air induced through hole 6 must pass around the valve 7 before it is induced in the duct 10, which prevents or substantially reduces the noise which could arise, if the hole 6 and the inlet of the duct 10 were located close to each other.
Should a lower admixture of air be desired than that for which the device of the invention is adapted, like when rinsing hair, the hole 6 is covered by a finger of the hand holding the shower grip 11. If the hole 6 is covered
completely, no air at all will be admixed, and the admixture of air may be adjusted between 0 and 20 - 30% by partly covering the hole.
As appears from the figure, the valve 7 is located as close to the sprayer as possible. The reason is that the ejector effect of the valve 7 will be better, since the point of mixture between water and air is located near the outlet for the water/air mixture, and that on shutting off the water flow to the shower grip 1 there will be a small amount of water therein downstream of the valve, which reduces the risk of water being spilt.
While only one embodiment of the device of the present invention has been described above and shown in the drawing, it will be appreciated that the invention is not limited to said embodiment but only by what is stated in the claims.

Claims

1 A device for limiting the amount of water flowing through a shower head, characterized by a valve (7) disposed immediately adjacent the shower head, which valve admixes air to the water flow fed to the outlet (2) of the shower head.
2 A device as set forth in claim 1, characterized in that the valve (7) is operable to limit or prevent air admixture to the water flow.
3 A device as set forth in claim 1 or 2, characterized in that the valve is formed as an ejector valve (7) integrated in the shower head (1).
4 A device as set forth in claim 3, characterized in in that the ejector valve (7) has no movable parts and is
provided with an axial water-duct (9b) and a substantially radial air duct (10) communicating therewith.
5 A device as set forth in claim 4, characterized in that the inlet of the air duct (10) terminates within the shower head (1).
6 A device as set forth in claim 4 or 5, characterized in that the inlet of the air duct (10) terminates between the inner wall of the shower head and the exterior of the ejector valve (7).
7 A device as set forth in any of claims 4 - 6, characterized by a hole (6) formed in the wall of the shower head
(1), which hole communicates with the air duct (10).
8 A device as set forth in claim 7, characterized in that the hole (6) is spaced apart from the inlet of the air duct (10) and preferably in such a way that air has to pass the exterior of the valve (7) before being induced in the air duct .
9 A device as set forth in claim 7 or 8, characterized in that the shower head consists of a hand shower (1) and the hole (6) is located on the shower grip in such a way that it may be covered by one of the fingers of the hand holding the shower grip.
10 A device as set forth in any of the preceding claims, characterized in that the valve (7) is disposed at the portion of the shower head (1) formed as a shower grip, which portion is provided with a sprayer (2).
AMENDED CLAIMS
[received by the International Bureau on 1 June 1992 (01.06.92);
original claims 1,3,4 and 5 replaced by amended claim 1;
claims 6-8,2 and 9 amended and renumbered as claims 2-4,5 and 6;
claim 10 unchanged and renumbered as claim 7 (1 page)]
1 A device for limiting the amount of water flowing through a shower head, comprising an ejector valve (7) disposed immediately adjacent the shower head, which valve admixes air to the water flow fed to the outlet (2) of the shower head and is provided with an axial water duct (9b) and a substantially radial air duct (10) communicating therewith, characterized in that the inlet of the air duct (10) terminates within the shower head (1).
2 A device as set forth in claim 1, characterized in that the inlet of the air duct (10) terminates between the inner wall of the shower head (1) and the exterior of the ejector valve (7).
2 A device as set forth in claim 1 or 2, characterized by a hole (6) formed in the wall of the shower head (1), which hole communicates with the air duct (10).
4 A device as set forth in claim 3, characterized in that the hole (6) is spaced apart from the inlet of the air duct (10) and preferably in such a way that air has to pass the exterior of the valve ( 7 ) before being induced in the air duct.
5 A device as set forth in any of the preceding claims, characterized in that the valve (7) is operable to limit or prevent air admixture to the water flow.
6 A device as set forth in claim 3, 4 or 5, characterized in that the shower head consists of a hand shower (1) and that the hole (6) is located on the shower grip in such a way that it may be covered by one of the fingers of the hand holding the shower grip.
7 A device as set forth in any of the preceding claims, characterized in that the valve (7) is disposed at the portion of the shower head (1) formed as a shower grip, which portion is provided with a sprayer (2).
PCT/SE1991/000919 1991-01-08 1991-12-30 A device for shower heads WO1992011948A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE69125028T DE69125028T2 (en) 1991-01-08 1991-12-30 DEVICE FOR HAND SHOWERS
EP92903044A EP0566635B1 (en) 1991-01-08 1991-12-30 A device for shower heads

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9100047A SE468274B (en) 1991-01-08 1991-01-08 SHOWER HEAD DEVICE
SE9100047-1 1991-01-08

Publications (1)

Publication Number Publication Date
WO1992011948A1 true WO1992011948A1 (en) 1992-07-23

Family

ID=20381554

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1991/000919 WO1992011948A1 (en) 1991-01-08 1991-12-30 A device for shower heads

Country Status (5)

Country Link
EP (1) EP0566635B1 (en)
DE (1) DE69125028T2 (en)
ES (1) ES2101832T3 (en)
SE (1) SE468274B (en)
WO (1) WO1992011948A1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4308991A1 (en) * 1993-03-20 1994-09-22 Grohe Kg Hans Hand shower
FR2711553A1 (en) * 1993-10-29 1995-05-05 Pro Cd Sarl Spray head
WO1997037087A1 (en) * 1996-03-29 1997-10-09 Henkin Melvyn Lane Liquid jet gas pump shower water delivery device
WO1998002250A1 (en) * 1996-07-17 1998-01-22 Newteam Limited Aerating arrangement primarily for a shower head
EP1020571A3 (en) * 1999-01-18 2001-09-05 Hansgrohe AG Sanitary article, in particular a shower head, with a switching device to influence a fluid flow
EP1142646A1 (en) * 2000-04-05 2001-10-10 John L. M.S. P.E. Brice, Ph.D. Venturi based vacuum valve apparatus for water conservation
WO2006002300A1 (en) 2004-06-23 2006-01-05 Spraying Systems Co. Air induction liquid spray nozzle assembly
WO2006081399A2 (en) 2005-01-27 2006-08-03 John Brice Vacuum venturi apparatus and method
GB2464779A (en) * 2009-04-09 2010-05-05 A L Challis Ltd An air inductor wherein the fastening attachment configuration can be altered
GB2470805A (en) * 2010-03-31 2010-12-08 Zgp Ltd Shower attachment

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006034276B3 (en) * 2006-07-21 2008-04-03 Stiebel Eltron Gmbh & Co. Kg Hot water supply has cooling water inlet and nozzle or water-jet pump operating according to venturi principle
DE102006034275B4 (en) 2006-07-21 2019-06-13 Stiebel Eltron Gmbh & Co. Kg Boiler

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2316832A (en) * 1934-12-04 1943-04-20 Aghnides Elie Fluid mixing device
US2565554A (en) * 1949-04-30 1951-08-28 Wrightway Engineering Co Aerating shower head
US3322352A (en) 1965-02-01 1967-05-30 Alcantara Jose Maria Araluce Sprayer for shower bath
US4072270A (en) * 1976-08-23 1978-02-07 Harmony Emitter Company, Inc. Shower head aerator
US4573639A (en) * 1982-05-24 1986-03-04 Logue Murl F Shower head

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2316832A (en) * 1934-12-04 1943-04-20 Aghnides Elie Fluid mixing device
US2565554A (en) * 1949-04-30 1951-08-28 Wrightway Engineering Co Aerating shower head
US3322352A (en) 1965-02-01 1967-05-30 Alcantara Jose Maria Araluce Sprayer for shower bath
US4072270A (en) * 1976-08-23 1978-02-07 Harmony Emitter Company, Inc. Shower head aerator
US4573639A (en) * 1982-05-24 1986-03-04 Logue Murl F Shower head

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5613638A (en) * 1993-03-20 1997-03-25 Hans Grohe Gmbh & Co. Hand shower
DE4308991A1 (en) * 1993-03-20 1994-09-22 Grohe Kg Hans Hand shower
FR2711553A1 (en) * 1993-10-29 1995-05-05 Pro Cd Sarl Spray head
WO1997037087A1 (en) * 1996-03-29 1997-10-09 Henkin Melvyn Lane Liquid jet gas pump shower water delivery device
WO1998002250A1 (en) * 1996-07-17 1998-01-22 Newteam Limited Aerating arrangement primarily for a shower head
EP1020571A3 (en) * 1999-01-18 2001-09-05 Hansgrohe AG Sanitary article, in particular a shower head, with a switching device to influence a fluid flow
EP1142646A1 (en) * 2000-04-05 2001-10-10 John L. M.S. P.E. Brice, Ph.D. Venturi based vacuum valve apparatus for water conservation
EP1773500A4 (en) * 2004-06-23 2008-12-10 Spraying Systems Co Air induction liquid spray nozzle assembly
WO2006002300A1 (en) 2004-06-23 2006-01-05 Spraying Systems Co. Air induction liquid spray nozzle assembly
AU2005258199B2 (en) * 2004-06-23 2010-01-21 Spraying Systems Co. Air induction liquid spray nozzle assembly
EP1773500A1 (en) * 2004-06-23 2007-04-18 Spraying Systems Co. Air induction liquid spray nozzle assembly
EP1855576A2 (en) * 2005-01-27 2007-11-21 John Brice Vacuum venturi apparatus and method
EP1855576A4 (en) * 2005-01-27 2009-03-04 John Brice Vacuum venturi apparatus and method
WO2006081399A2 (en) 2005-01-27 2006-08-03 John Brice Vacuum venturi apparatus and method
USRE44909E1 (en) 2005-01-27 2014-05-27 John L. Brice Vacuum venturi apparatus and method
GB2464779A (en) * 2009-04-09 2010-05-05 A L Challis Ltd An air inductor wherein the fastening attachment configuration can be altered
GB2464779B (en) * 2009-04-09 2010-09-22 A L Challis Ltd Air inductor
WO2010116115A1 (en) * 2009-04-09 2010-10-14 A L Challis Limited Air inductor
US8746594B2 (en) 2009-04-09 2014-06-10 A L Challis Limited Air inductor
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

Also Published As

Publication number Publication date
DE69125028T2 (en) 1997-10-09
EP0566635B1 (en) 1997-03-05
ES2101832T3 (en) 1997-07-16
DE69125028D1 (en) 1997-04-10
EP0566635A1 (en) 1993-10-27
SE468274B (en) 1992-12-07
SE9100047D0 (en) 1991-01-08
SE9100047L (en) 1992-07-09

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