EP2946812A1 - Wirblerdüsenanordnung - Google Patents

Wirblerdüsenanordnung Download PDF

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Publication number
EP2946812A1
EP2946812A1 EP14169337.4A EP14169337A EP2946812A1 EP 2946812 A1 EP2946812 A1 EP 2946812A1 EP 14169337 A EP14169337 A EP 14169337A EP 2946812 A1 EP2946812 A1 EP 2946812A1
Authority
EP
European Patent Office
Prior art keywords
swirler
cap
nozzle
nozzle body
recited
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.)
Withdrawn
Application number
EP14169337.4A
Other languages
English (en)
French (fr)
Inventor
Chris John Fergusson
Krzysztof Solek
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.)
Carrier Fire and Security EMEA BVBA
Original Assignee
UTC Fire and Security EMEA BVBA
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 UTC Fire and Security EMEA BVBA filed Critical UTC Fire and Security EMEA BVBA
Priority to EP14169337.4A priority Critical patent/EP2946812A1/de
Publication of EP2946812A1 publication Critical patent/EP2946812A1/de
Withdrawn legal-status Critical Current

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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
    • 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
    • B05B1/3431—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 being formed at the interface of cooperating elements, e.g. by means of grooves
    • B05B1/3447—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 being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a cylinder having the same axis as the outlet
    • 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

Definitions

  • the present disclosure relates to nozzles, and more particularly to swirler nozzles for issuing fluid in a spray pattern.
  • a variety of nozzles can be used to issue pressurized fluids. In certain applications it is desirable to issue a spray of discrete droplets from a nozzle, rather than a solid jet of liquid. For example, in fire extinguishers intended for safe use in environments that may include live electrical equipment, on which the extinguishers may inadvertently be used, it is necessary to have a nozzle that issues a spray of discrete droplets that cannot form an electrical path from the fire to the user.
  • Some nozzles include a main nozzle body and a cap with a separate swirler captured between the main nozzle body and cap to induce swirl on the liquid issuing from the nozzle body.
  • the swirl enhances the breakup of the liquid into droplets.
  • the swirler must be properly aligned and installed during assembly.
  • a swirler nozzle includes a nozzle body defining an inlet opening and an outlet opening in fluid communication with the inlet opening through a fluid passage defined along a longitudinal axis.
  • a swirler includes a plurality of swirler legs connected to the nozzle body proximate the outlet opening, with a swirl feature supported from the swirler legs extending away from the outlet opening.
  • the swirler and nozzle body are integral with one another.
  • the swirler and nozzle body can each include a polymer material.
  • a cap can be mounted to the nozzle body, wherein a flow passage is defined between the swirler and the cap for imparting swirl onto fluids flowing through the cap to be sprayed from an outlet of the cap.
  • the cap can include a polymer material and can be mounted to the swirler body at a weld joint.
  • the swirler can include two diametrically opposed legs with two opposed windows defined circumferentially between the legs.
  • the swirl feature can include a pair of channels forming a double helix winding along the longitudinal axis in a direction away from the outlet opening, wherein each channel is in fluid communication with a respective one of the windows for imparting swirl on fluids flowing from the outlet opening.
  • a pair of flow passages can be defined between the swirler and the cap through the channels for imparting swirl onto fluids flowing through the cap to be sprayed from an outlet of the cap wherein each channel is in fluid communication with a respective one of the windows for imparting swirl on fluids flowing from the outlet opening.
  • the swirl feature can include a centerline flow port defined on the longitudinal axis for issuing fluid along the longitudinal axis. It is also contemplated that a spin chamber can be defined downstream of the channels and between the swirler and the cap.
  • a method of assembling a swirler nozzle assembly includes forming a nozzle body defining an inlet opening and an outlet opening in fluid communication with the inlet opening through a fluid passage defined along a longitudinal axis, with a swirler connected to the nozzle body.
  • Forming the nozzle body can include forming the nozzle body and swirler integrally.
  • forming the nozzle body can include integrally forming the nozzle body and swirler in a single molding process.
  • the method can include mounting a cap to the nozzle body to form a flow passage between the swirler and the cap for imparting swirl onto fluids flowing through the cap to be sprayed from an outlet of the cap.
  • Mounting the cap to the nozzle body can include ultrasonic welding the cap to the nozzle body.
  • FIG. 1 a partial view of an exemplary embodiment of a swirler nozzle in accordance with the disclosure is shown in Fig. 1 and is designated generally by reference character 100.
  • FIGs. 2-4 Other embodiments of swirler nozzles in accordance with the disclosure, or aspects thereof, are provided in Figs. 2-4 , as will be described.
  • the systems and methods described herein can be used to produce sprays of discrete droplets, and to provide for simplified assembly.
  • Swirler nozzle 100 includes a nozzle body 102 and a cap 116, which has a discharge outlet 118 for spaying liquids.
  • nozzle body 102 defines an inlet opening 104 and an outlet opening 106 in fluid communication with inlet opening 104 through a fluid passage 108 defined along longitudinal axis A.
  • a swirler 110 includes a pair of swirler legs 112 connected to nozzle body 102 proximate outlet opening 106. Referring to Fig. 4 , legs 112 straddle outlet opening 106 so that a swirl feature 114 supported from the swirler legs 112 can extend away from and span across outlet opening 106. While swirler 110 is shown and described with two legs 112, it is also contemplated that any other suitable number of legs can be used. For example, the number of legs can be more than two, with the number of windows 122, described below, equivalent to the number of legs.
  • swirler 110 and nozzle body 102 are integral with one another.
  • swirler 110 and nozzle body 102 can each include a polymer material, and can be formed integrally together in a single molding process. In this manner, misassembly of swirler 110 into swirler nozzle 100 can be largely or completely avoided.
  • cap 116 is mounted to the nozzle body 102 with a flow passage defined between swirl feature 114 and cap 116 for imparting swirl onto fluids flowing through cap 116 to be sprayed from outlet 118.
  • Cap 116 can include a polymer material and can be mounted to swirler body 102 at a weld joint 120. It is also contemplated that any other suitable manner of engaging cap 116 to swirler body 102 can be used, such as a threaded engagement.
  • the two diametrically opposed legs 112 of swirler 110 define two opposed windows 122 circumferentially between the legs 112.
  • Swirl feature 114 includes a pair of channels 124 forming a double helix winding along the longitudinal axis A in a direction away from outlet opening 106. Each channel 124 is in fluid communication directly with a respective one of the windows 122 for imparting swirl on fluids flowing from outlet opening 106.
  • a pair of flow passages are defined between the swirler 110 and the cap 116 through the channels 124 for imparting swirl onto fluids flowing through cap 116 to be sprayed from outlet 118 of the cap.
  • Each of the two channels is in fluid communication with a respective one of the windows 122 for feeding fluids flowing from outlet opening 106 into channels 124.
  • the swirl feature 114 also includes a centerline flow port 126 defined on the longitudinal axis A for issuing fluid along the longitudinal axis A.
  • a spin chamber 128 is defined downstream of the channels 124 and between swirler 110 and cap 116.
  • Pressurized fluid at inlet opening 104 can flow through fluid passage 108 and outlet opening 106, through windows 122 into channels 124 and centerline flow port 126. After passing through channels 124 and centerline flow port 126, the flow swirls in spin chamber 128 and finally sprays out discharger orifice 118 as a spray of liquid droplets.
  • An exemplary method of assembling swirler nozzle 100 includes forming swirler 110 and nozzle body 102 together integrally as a single polymer workpiece in a single molding process.
  • Cap 116 can be formed of the same or a similar polymer material in a separate molding process, and can then be ultrasonically welded to the end of nozzle body 102 proximate outlet opening 106. Since swirler 110 and nozzle body 102 are integrally connected, the chances of the final assembly having a misassembled swirler 110 are greatly reduced or eliminated.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Nozzles (AREA)
EP14169337.4A 2014-05-21 2014-05-21 Wirblerdüsenanordnung Withdrawn EP2946812A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14169337.4A EP2946812A1 (de) 2014-05-21 2014-05-21 Wirblerdüsenanordnung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14169337.4A EP2946812A1 (de) 2014-05-21 2014-05-21 Wirblerdüsenanordnung

Publications (1)

Publication Number Publication Date
EP2946812A1 true EP2946812A1 (de) 2015-11-25

Family

ID=50771121

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14169337.4A Withdrawn EP2946812A1 (de) 2014-05-21 2014-05-21 Wirblerdüsenanordnung

Country Status (1)

Country Link
EP (1) EP2946812A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1101264A (en) * 1909-12-27 1914-06-23 Spray Engineering Co Spray-nozzle and method of distributing liquids.
DE873170C (de) * 1949-10-13 1953-04-13 Herwarth Brake Duese zum Bespruehen von Flaechen und Raumteilen
US5267692A (en) * 1989-11-16 1993-12-07 Afa Products Inc. Adjustable nozzle assembly
US20120073043A1 (en) * 2008-06-25 2012-03-29 Bradley Fixtures Corporation Showerhead for emergency fixture

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1101264A (en) * 1909-12-27 1914-06-23 Spray Engineering Co Spray-nozzle and method of distributing liquids.
DE873170C (de) * 1949-10-13 1953-04-13 Herwarth Brake Duese zum Bespruehen von Flaechen und Raumteilen
US5267692A (en) * 1989-11-16 1993-12-07 Afa Products Inc. Adjustable nozzle assembly
US20120073043A1 (en) * 2008-06-25 2012-03-29 Bradley Fixtures Corporation Showerhead for emergency fixture

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