WO2016067212A1 - Buse de pulvérisation en brouillard - Google Patents

Buse de pulvérisation en brouillard Download PDF

Info

Publication number
WO2016067212A1
WO2016067212A1 PCT/IB2015/058302 IB2015058302W WO2016067212A1 WO 2016067212 A1 WO2016067212 A1 WO 2016067212A1 IB 2015058302 W IB2015058302 W IB 2015058302W WO 2016067212 A1 WO2016067212 A1 WO 2016067212A1
Authority
WO
WIPO (PCT)
Prior art keywords
gasket
chamber
cover
flange
nozzle according
Prior art date
Application number
PCT/IB2015/058302
Other languages
English (en)
Inventor
Maurizio Grande
Original Assignee
Maurizio Grande
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 Maurizio Grande filed Critical Maurizio Grande
Publication of WO2016067212A1 publication Critical patent/WO2016067212A1/fr

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
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, 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
    • B05B1/3006—Nozzles, 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
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/02—Nozzles specially adapted for fire-extinguishing
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C99/00—Subject matter not provided for in other groups of this subclass
    • A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
    • A62C99/0072—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using sprayed or atomised water
    • 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
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3426—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels emerging in the swirl chamber perpendicularly to the outlet axis
    • 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
    • B05B1/30—Nozzles, 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
    • B05B1/3013—Nozzles, 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 a lift valve
    • B05B1/302—Nozzles, 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 a lift valve with a ball-shaped valve member

Definitions

  • the present invention relates to an atomizing nozzle and in particular a nozzle for fire extinguishing systems inside buildings, dwellings, large vessels and closed areas in general.
  • jets of finely atomized water with water droplets having a diameter of less than 200 ⁇
  • water mist is preferable to the use of conventional jets of water to extinguish fires inside buildings and especially in houses, hotels or other closed areas containing furnishings and/or valuable objects.
  • a slider or head housed in the duct with the ability to slide, adapted to contact the cover at the orifice.
  • the closing plug is not present and the slider is subject only to the pressure of the water inside the duct.
  • a sealing gasket to prevent the escape of water due to the very high pressure inside the duct.
  • a gasket is also positioned at the coupling between the body and the water distribution circuit that serves one or more atomizing nozzles.
  • these gaskets are generally O-ring type gaskets made of elastomeric material.
  • fluorinated polymers and in particular fluorinated terpolymers, such as those marketed by Dupont with the trademark "Viton”.
  • the plug that closes the passage of the water toward the inner duct of the body is also often made of elastomeric materials such as those cited above.
  • the object of the present invention is to propose an atomizing nozzle that solves the problems of prior art devices.
  • the object of the innovation is to produce an atomizing nozzle that ensures greater reliability and better efficacy of action when used in fire extinguishing systems.
  • the object of the invention is to propose an atomizing nozzle that can operate correctly even in environments with high temperatures, for example of over 200°.
  • the object of the invention is also to produce an atomizing nozzle that has no substantial construction complications with respect to prior art nozzles.
  • the object of the invention is therefore to provide an atomizing nozzle that is sturdy, simple to produce and inexpensive.
  • an atomizing nozzle comprising:
  • a slider housed slidingly in the chamber, that carries at one end a diffuser; and - an elastic element, interposed between the plug and the slider, adapted to maintain the diffuser pressed against the cover.
  • a first sealing gasket is interposed between said body and said cover. At least a second sealing gasket is positioned at the coupling portion.
  • the first and the second gasket are made of metal.
  • said first gasket and said second gasket are made of stainless steel.
  • the first gasket comprises an external annular portion defining a first stop face and a second stop face, adapted to respectively contact the body and the cover, when these are clamped.
  • the first gasket also comprises an inner portion, which projects from the first stop face, defining a first conical flange that can be inserted, at least partially, into the chamber, to maintain the gasket centered.
  • the external annular portion has a constant thickness. Therefore, the stop faces are substantially flat.
  • the body comprises a terminal onto which the cover is fixed.
  • the outer diameter of the first flange is coincident with the inner diameter of the edge of the terminal.
  • the first gasket also comprises a second cylindrical flange that projects from the second stop face and extends toward the cover. Therefore, said second flange is at the contact area between the second stop face and the cover.
  • the second gasket comprises an external annular portion that defines two contact faces adapted to respectively contact the upper edge of the groove and a connector of the distribution line.
  • said external annular portion has a constant thickness. Therefore, the contact faces are substantially flat.
  • the second gasket also comprises an internal annular portion that defines a first conical flange. The surface of the flange contacts the outer conical surface of the groove when the nozzle is clamped on said connector.
  • the angle of the surface of the flange is of around 64° and the angle of the outer conical surface of the groove is of around 68°.
  • the difference in the angle of the two conical surfaces allows the gasket, during clamping, to deform so that said surfaces are in contact with each other.
  • a nozzle in which the diffuser comprises a cylindrical tip with a flat head surface on which there are produced four incisions that define the same number of channels that allow the pressurized water to flow from the chamber toward the orifice.
  • the tip has a diameter of 1.3 mm
  • the channels have a width of 0.2 mm, a maximum height of 0.21 mm and a length, measured on the axis, of 0.5 mm.
  • FIG. 1 is an exploded perspective view of the atomizing nozzle according to the invention
  • FIG. 2 is a sectional view of the atomizing nozzle according to the invention.
  • Figs. 4a, 4b and 4c are respectively a perspective, front and side view of the slider of the nozzle, according to the invention.
  • the atomizing nozzle indicated as a whole with 1, comprises a body 10 inside which a chamber 1 1, preferably cylindrical, is produced.
  • the body 10 comprises a coupling portion 12 for connecting the nozzle to a high pressure water distribution line.
  • the coupling portion 12 comprises, for example, a threaded cylindrical terminal.
  • the outer surface of the body 10 is preferably knurled to allow a better grip during clamping and release of the nozzle from a connector of the distribution line.
  • the chamber 1 1 is placed in communication with the distribution line through a duct 13 that passes through the coupling portion 12 and emerges at one end 10a of the body 10.
  • a closing element 20 is positioned at the opposite end 10b of the body 10 to close the chamber 1 1.
  • the closing element 20 comprises a cover 21 that closes the end 1 1a of the chamber 1 1 and a ring nut 22, screwed onto a threaded terminal 14 of the body 10, which maintains the cover 21 in position.
  • an orifice 23 from which the jet of atomized water is delivered.
  • the diameter of the orifice 23 is around 0.2 mm.
  • the body 10 and the closing element 20 are made of steel, preferably stainless steel.
  • a plug 30 is positioned between the duct 13 and the chamber 1 1 to obstruct or free the passage of the pressurized water toward the chamber 1 1.
  • the plug 30 comprises a semi- spherical portion 31 adapted to contact a conical stop 15 produced at one end l ib of the chamber 1 1.
  • a slider 40 is housed slidingly in the chamber 1 1.
  • the slider 40 comprises a cylindrical central portion 41 , with a slightly smaller diameter than that of the chamber 1 1 , and a diffuser 42 that extends from the central portion 41 toward the cover 21.
  • An elastic element 32 such as a spring, is interposed between the plug 30 and the slider 40.
  • the spring 32 exerts an elastic force that tends to move the slider 40 and the plug 30 away from each other. The spring then maintains the plug 30 pressed against the stop 15 of the chamber 1 1 and the diffuser 42 against the cover 21.
  • the diffuser 42 comprises a cylindrical tip 43 with a flat head surface 44. On the head surface 44 there are produced incisions defining channels 45 that allow the pressurized water to flow from the chamber 1 1 toward the orifice 23.
  • Atomization of the water takes place during the passage of the water through the channels 45, which have a decreasing section.
  • first sealing gasket 50 to prevent pressurized water from leaking from the chamber 1 1.
  • a second sealing gasket 60 is positioned at the coupling portion 12 to prevent the leakage of pressurized water between the body 10 and a connector of the distribution line.
  • the first gasket 50 and the second gasket 60 are made of metal.
  • the gaskets 50, 60 are made of stainless steel, for example AISI 303 or 304 steel.
  • Gaskets thus configured can be used at high temperatures (even over 250°) without being subject to substantial deformations and without losing their mechanical properties or hydraulic seal.
  • the first gasket 50 comprises an external annular portion 51 and an internal annular portion 52.
  • the external annular portion 51 has, preferably, a constant thickness and defines a first stop face 53 and a second stop face 54. Therefore, said stop faces 53, 54 are preferably substantially flat.
  • stop face 53 is in contact with the edge 14a of the terminal 14.
  • the internal annular portion 52 projects from the first face 53 defining a first conical flange 55.
  • the first flange 55 extends at least partially into the chamber 1 1 to maintain the gasket centered with respect to the body 10.
  • the maximum diameter Df of the first flange 55 coincides with the internal diameter db of the edge 14a of the terminal 14.
  • the lateral wall 55a of the first flange 55 is free from the contact with the terminal 14. The clamping force is discharged only on the flat faces 53, 54 that produce the hydraulic seal.
  • a second cylindrical flange 56 instead projects from the face 52 of the gasket 50. This second flange 56, which extends toward the cover 21, creates a barrier at the contact area between the surface 52 and the cover 21 contributing to improve the hydraulic seal.
  • the second gasket 60 is positioned at the base of the coupling portion 12.
  • the groove 16 has an outer conical surface 16a and an inner conical surface 16b.
  • the two conical surfaces 16a, 16b are facing each other.
  • the outer surface 16a has the diameter increasing toward the end 10b of the body 10, while the inner surface 16b has the diameter decreasing toward the end 10b of the body 10.
  • the second gasket 60 comprises an external annular portion 61 and an internal annular portion 62.
  • the external annular portion has two contact faces 63, 64. Said contact faces are preferably flat and parallel to each other.
  • the first face 63 contacts an upper edge 17 of the groove 16 when the nozzle is clamped on a connector (not shown) of the pressurized water distribution line.
  • the second face 64 contacts a respective part of the connector.
  • the internal annular portion 62 projects from the face 63 defining a first conical flange 65.
  • the flange 65 is housed fully in the groove 17.
  • the conical surface 65b of the flange 65 contacts the outer conical surface 16a of the groove 16 when the nozzle is clamped on the connector.
  • the angle of the surface 65b of the flange 65 is less than the angle of the outer conical surface 16a.
  • the angle a of the surface 65b of the flange 65 is of around 64° while the angle ⁇ of the outer conical surface 16a is of around 68°.
  • a second conical flange 66 adapted to be inserted into the connector, projects from the opposite face 62.
  • the surface 65b of this second flange has an angle of approximately 44°.
  • the plug 30 is also made of metal, and more specifically stainless steel.
  • the nozzle 1 is made entirely of metal material, without parts in plastic or elastomeric materials that could deteriorate if exposed to high temperatures, or in any case exceeding 150°.
  • the nozzle thus conceived is much more reliable than prior art nozzles. Moreover, the nozzle of the invention can be washed or also treated with chemical products without compromising its operation and reliability.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Nozzles (AREA)

Abstract

L'invention se rapporte à une buse d'atomisation, comprenant un corps (10) dans lequel est formée une chambre (11), une conduite d'entrée (13), un couvercle (21) qui ferme une extrémité (11a) de la chambre (11), dans lequel est formé un orifice de sortie (23) pour le jet d'eau atomisé, un obturateur mobile (30) interposé entre la conduite d'entrée (13) et la chambre (11), un coulisseau (40) logé en coulissement dans la chambre (11), qui porte à une extrémité un diffuseur (42), un ressort (32), interposé entre l'obturateur (30) et le coulisseau (40), conçu pour maintenir le diffuseur (42) appuyé contre le couvercle (21), au moins un premier joint d'étanchéité (50) étant interposé entre ledit corps (10) et ledit couvercle (21) et au moins un second joint d'étanchéité (60) étant positionné au niveau d'une position de couplage (12), caractérisée en ce que les premier et second joints d'étanchéité, et éventuellement l'obturateur (30), sont constitués de métal.
PCT/IB2015/058302 2014-10-29 2015-10-28 Buse de pulvérisation en brouillard WO2016067212A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI2014A001861 2014-10-29
ITMI20141861 2014-10-29

Publications (1)

Publication Number Publication Date
WO2016067212A1 true WO2016067212A1 (fr) 2016-05-06

Family

ID=52232298

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2015/058302 WO2016067212A1 (fr) 2014-10-29 2015-10-28 Buse de pulvérisation en brouillard

Country Status (1)

Country Link
WO (1) WO2016067212A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190133452A (ko) * 2018-05-23 2019-12-03 홍재의 물안개 분무 장치용 노즐 구조체

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5857626A (en) 1997-10-09 1999-01-12 Hsu; Chih-Lung Atomizer producing a superfine spray
US6415994B1 (en) * 2000-08-29 2002-07-09 Clayton F Boggs Rotational nozzle atomizer
US6666386B1 (en) 2002-06-06 2003-12-23 Yu-Chiung Huang Atomizing nozzle structure
US6827295B1 (en) * 1999-06-22 2004-12-07 Val Products, Inc. High pressure misting nozzle with a freely movable nozzle pin
US20080006721A1 (en) 2006-07-06 2008-01-10 Yu-Chiung Huang Mist nozzle
US20120261489A1 (en) 2011-04-14 2012-10-18 Hui San Hsu Atomizing nozzle with anti-leakage function
US20130153687A1 (en) 2011-12-20 2013-06-20 Yuan Pin Industrial Co., Ltd. Misting nozzle
US20140263748A1 (en) * 2013-02-08 2014-09-18 Hui San Hsu Atomizing nozzle with improved rotor structure

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5857626A (en) 1997-10-09 1999-01-12 Hsu; Chih-Lung Atomizer producing a superfine spray
US6827295B1 (en) * 1999-06-22 2004-12-07 Val Products, Inc. High pressure misting nozzle with a freely movable nozzle pin
US6415994B1 (en) * 2000-08-29 2002-07-09 Clayton F Boggs Rotational nozzle atomizer
US6666386B1 (en) 2002-06-06 2003-12-23 Yu-Chiung Huang Atomizing nozzle structure
US20080006721A1 (en) 2006-07-06 2008-01-10 Yu-Chiung Huang Mist nozzle
US20120261489A1 (en) 2011-04-14 2012-10-18 Hui San Hsu Atomizing nozzle with anti-leakage function
US20130153687A1 (en) 2011-12-20 2013-06-20 Yuan Pin Industrial Co., Ltd. Misting nozzle
US20140263748A1 (en) * 2013-02-08 2014-09-18 Hui San Hsu Atomizing nozzle with improved rotor structure

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Metal Seal Design Guide High Performance Engineered Seals and Sealing Systems", 1 July 2013 (2013-07-01), 33 Defco Park Road North Haven, CT 06473 - US, XP055196301, Retrieved from the Internet <URL:http://www.parker.com/literature/Seal Group/CSS 5129.pdf> [retrieved on 20150616] *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190133452A (ko) * 2018-05-23 2019-12-03 홍재의 물안개 분무 장치용 노즐 구조체
KR102091926B1 (ko) * 2018-05-23 2020-03-20 홍재의 물안개 분무 장치용 노즐 구조체

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