EP3508256A1 - Flüssigkeitsnebeldüse und verfahren mit einem asymmetrischen diffusor - Google Patents

Flüssigkeitsnebeldüse und verfahren mit einem asymmetrischen diffusor Download PDF

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Publication number
EP3508256A1
EP3508256A1 EP18248153.1A EP18248153A EP3508256A1 EP 3508256 A1 EP3508256 A1 EP 3508256A1 EP 18248153 A EP18248153 A EP 18248153A EP 3508256 A1 EP3508256 A1 EP 3508256A1
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EP
European Patent Office
Prior art keywords
diffuser
nozzle
stage
axis
bisecting plane
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.)
Pending
Application number
EP18248153.1A
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English (en)
French (fr)
Inventor
designation of the inventor has not yet been filed The
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.)
Tyco Fire Products LP
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Tyco Fire Products LP
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Filing date
Publication date
Application filed by Tyco Fire Products LP filed Critical Tyco Fire Products LP
Publication of EP3508256A1 publication Critical patent/EP3508256A1/de
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C37/00—Control of fire-fighting equipment
    • A62C37/08—Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers
    • 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
    • B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
    • B05B1/262—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors
    • B05B1/267—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors the liquid or other fluent material being deflected in determined directions

Definitions

  • This invention relates generally to fire protection devices and in particular fluid mist nozzles. More specifically, the present invention is directed to sidewall fluid mist nozzles and methods.
  • a frame having a body defines an inlet, an outlet and a passageway extending between the inlet and the outlet along a nozzle axis.
  • the frame preferably includes an apex axially spaced from the outlet with a pair of frame arms extending from the body to the apex.
  • the pair of arms are preferably equidistantly spaced about a first bisecting plane that bisects the body with the pair of arms being aligned in a second bisecting plane that bisects the body and is perpendicular to the first bisecting plane.
  • the intersection of the first and second bisecting planes is aligned along the nozzle axis.
  • a diffuser is preferably disposed internally to the frame between the body and the apex. The diffuser has an impact end opposed to and spaced from the outlet and a discharge end axially spaced from the impact end along a diffuser axis aligned parallel with the nozzle axis.
  • the impact end is preferably asymmetric with respect to at least one of the first bisecting plane or second bisecting plane.
  • an annular orifice member is disposed along the passageway between the inlet and the outlet.
  • the annular orifice member defines an internal diameter that is preferably less than the outlet diameter to define a nominal K-factor of less than 2.
  • a preferred method of fire protection of an occupancy using a sidewall mist nozzle includes providing a fluid mist nozzle frame for mounting in a horizontal arrangement along a wall between a ceiling and a floor of the occupancy.
  • the frame has a body defining an inlet for connection to a fluid supply, an outlet, and a passageway extending between the inlet and the outlet along a nozzle axis, the frame includes an apex axially spaced from the outlet with a pair of frame arms extending from the body to the apex.
  • the preferred method includes disposing an asymmetric diffuser internally to the frame between the body and the apex to provide an asymmetric mist distribution of a fluid discharge from the frame body in the horizontal arrangement with the asymmetric distribution having more droplets below and laterally about the nozzle with fewer droplets above the nozzle so as to wet the floor and wall while restricting droplets from wetting the ceiling.
  • a frame having a body defines an inlet, an outlet and a passageway extending between the inlet and the outlet along a nozzle axis.
  • a preferably imperforate diffuser having no closed form through openings is spaced from the outlet.
  • the diffuser has an impact end and a discharge end spaced apart from one another to define a depth of the diffuser extending along a diffuser axis coaxially aligned along the nozzle axis and within a bisecting plane of the diffuser.
  • the diffuser defines a height in a direction perpendicular to the diffuser axis within the bisecting plane.
  • the diffuser defines a preferred minimum depth-to-height ratio ranging from 1:1 to 0.5:1.
  • the preferred imperforate diffuser includes a stage, a retainer and a wedge disposed between the retainer and the stage to define an external profile including a pair of open end flow channels formed about the wedge.
  • Each open end flow channel has an internal surface extending from the impact end to the discharge end.
  • the method providing a fluid mist nozzle frame for mounting in a horizontal arrangement along a wall between a ceiling and a floor of the occupancy.
  • the frame has a body defining an inlet for connection to a fluid supply, an outlet, and a passageway extending between the inlet and the outlet along a nozzle axis.
  • the method preferably includes spacing an imperforate diffuser from the outlet having a minimum depth-to-height ratio ranging from 1:1 to 0.5:1 and an external profile including a pair of open end flow channels formed about the diffuser to provide a mist distribution of a fluid discharge from the frame body in the horizontal arrangement with the mist distribution having more droplets below and laterally about the nozzle and fewer droplets above the nozzle so as to wet the floor and wall while restricting droplets from wetting the ceiling.
  • FIGS. 1 and 1B Schematically shown in FIGS. 1 and 1B is a preferred fluid mist nozzle 10 installed in a horizontal arrangement to provide fire protection to an occupancy O defined by a floor FLR below the nozzle 10, a ceiling CLG above the nozzle 10 and one or more walls WL extending between the floor FLR and the ceiling CLG.
  • the nozzle 10 is mounted through a hole in the wall WL and coupled or connected to a supply line of fire fighting fluid such as, for example, water WS.
  • a supply line of fire fighting fluid such as, for example, water WS.
  • the nozzle 10 is preferably located within a prescribed distance beneath the ceiling CLG to provide sufficient cooling at the ceiling while providing sufficient wetting of floor and wall surfaces to effectively address the fire.
  • the preferred sidewall nozzle 10 includes a frame 12 having a first end for coupling to a pipe fitting of the fluid supply WS and a second end to which a diffuser 100 is mounted for generating a preferred mist distribution about the nozzle that can be used in a preferred method of fire protection. Water impacting the diffuser 100 results in the formation of droplets and various preferred directed distributions of those droplets to provide the desired cooling and wetting density. As described herein, the preferred diffuser 100 provides for a preferably asymmetric mist distribution in which fluid droplets are retained or restricted from overly wetting the ceiling CLG and directed forward and rearward of the nozzle 10 while sufficiently distributing droplets laterally to wet the surrounding floor FLR and wall(s) WL.
  • the preferred mist distribution is imbalanced with more droplets below and laterally about the nozzle with fewer droplets above the nozzle.
  • preferred embodiments of the diffuser are asymmetric to generate and distribute the desired mist for fire protection.
  • a preferred frame 12 includes a body 14 defining an inlet 16, an outlet 18, and an internal passageway 20 extending between the inlet 16 and the outlet 18 along a nozzle axis A--A.
  • the passageway 20 is dimensioned to house a strainer 22 and an orifice insert 24.
  • the strainer 22 filters out debris and contaminants from the incoming fluid and the orifice insert 24 restricts the fluid path to define the discharge characteristics of the fluid.
  • Shown in FIG. 1A is a cross-sectional view of a preferred insert 24, which defines an internal diameter DIA of the orifice insert 24 to define the discharge characteristics out of the nozzle body 14, including the pressure and/or flow characteristics to impact the diffuser 100 for generation and distribution of the firefighting mist.
  • K represents the nominal K-factor constant in units of gallons per minute divided by the square root of pressure expressed in psig.
  • Preferred embodiments of the nozzle 10 used herein have a nominal K-factor ranging from about 1 to about 10 GPM/(PSI) 1 ⁇ 2 , is more preferably less than 5 GPM/(PSI) 1 ⁇ 2 , and is more preferably less than 5 GPM/(PSI) 1 ⁇ 2 , and is more preferably less than 2 GPM/(PSI) 1 ⁇ 2 , for example, 1.8 GPM/(PSI) 1 ⁇ 2 or 1.96 GPM/(PSI) 1 ⁇ 2 .
  • alternative embodiments of the nozzle 10 can include a frame 12 and/or orifice insert 24 to provide a K-factor of less than 1 or greater than 10 GPM/(PSI) 1 ⁇ 2 , for use in combination with preferred embodiments of diffuser described herein.
  • the internal diameter DIA of the orifice insert 24 is preferably less than 1/3 of an inch to provide for the desired K-factor.
  • the insert is shaped as an annular disc with a preferred internal diameter DIA of 0.297 inch and a preferred outer diameter ODIA of about 1/2 inch.
  • the internal passageway 20 of the frame 12 is dimensioned and configured to support and house the preferred orifice insert 24 and strainer 22 with the internal diameter of the passageway reducing from a first internal diameter D1 at the inlet 16 to smaller second diameter D2 at the outlet 18.
  • the exterior of the frame body 14 is configured for coupling to supply piping, which can include external pipe threading and a tool engagement portion for securing the nozzle to the supply piping WS.
  • a preferred frame 12 for use in the nozzle 10 is shown and described in U.S. Patent No. 5,505,383 and commercially embodied in the Type AM10 AQUAMIST nozzle, shown in Tyco Fire Products LP brochure TFP2210, entitled "Type AM10 and AM10B AQUAMIST Nozzles Non-Automatic (Open)” (Nov. 2015 ). Each of the cited documents is attached as Exhibit A and incorporated by reference in their entirety.
  • a preferred frame 12 includes an apex 26 axially spaced from the outlet 18 with a pair of frame arms 28 extending from the body to converge at the apex 26.
  • the pair of arms 28 are equidistantly spaced about a first bisecting plane BP1 that bisects the body 14. Moreover, the pair of arms 28 are aligned with one another in a second bisecting plane BP2 that bisects the body 14 and is perpendicular to the first bisecting plane BP1. The intersection of the first and second bisecting planes BP1, BP2 is aligned along the nozzle axis A--A.
  • the diffuser 100 is preferably disposed internally to the frame 12 between the body 14 and the apex 26 and between or internal to the frame arms 28.
  • the installed diffuser 100 has an impact end 102 opposed to and spaced from the outlet 18 against which fluid discharged from the orifice insert 24 impacts to generate the fluid mist.
  • the diffuser 100 also has a discharge end 104 axially spaced from the impact end 102 about which the generated mist disperses.
  • the axial distance between the impact and discharge ends 102, 104 define a length or depth DP of the diffuser extending along a diffuser axis D--D aligned parallel with and preferably along the nozzle axis A--A and which is within the first bisecting plane BP1.
  • the height H of the diffuser 100 is measured in a direction perpendicular to the nozzle axis A--A and within the first bisecting plane BP1.
  • the total height of the diffuser height H is less than the outlet diameter D2.
  • the width W of the diffuser 100 is measured in a direction perpendicular to the height and in particular, measured in the direction perpendicular to the nozzle axis A--A and parallel to the second bisecting plane BP2.
  • the diffuser 100 is preferably mounted or secured to the frame 12 at the apex 26.
  • the preferred diffuser 100 preferably includes a threaded securement portion 106 distally of the discharge end 104 for engagement with the apex 26.
  • the diffuser 100 can be affixed by alternative means provided that the preferred diffuser can be appropriately fixed and oriented to effectively generate and disperse a mist as described herein.
  • FIG. 2 Shown in FIG. 2 is a perspective of the diffuser 100 without the frame 12 for clarity.
  • the diffuser 100 and in particular, the impact end 102 is preferably asymmetric with respect to at least one of the first bisecting plane BP1 or second bisecting plane BP2.
  • the diffuser 100 is preferably asymmetric with respect to the first bisecting plane BP1 and symmetric with respect to the second bisecting plane BP2.
  • the impact end 102 of the diffuser 100 as installed, is preferably asymmetric with respect to the second bisecting plane BP2 and symmetric about the first plane BP1.
  • the preferred diffuser 100 has a first portion 108 and a second portion 110, spaced apart from one another to define at least one flow path or channel 112 therebetween wherein the first and second portions 108, 110 are preferably unequally spaced about the second bisecting plane BP2.
  • Preferably separating the first and second portion 108, 110 is a preferred third portion 114 centered along the diffuser axis D--D to form two flow channels 112a, 112b about the third portion 114.
  • the first portion of the diffuser provides a base or stage 108 from which the other portions of the diffuser are disposed.
  • the diffuser is formed or machined from a unitary piece of material to provide the regions and surfaces described.
  • the diffuser can be formed from joining components provided the assembly provides for the portions, surfaces and flow channels described herein.
  • the stage 108 includes various surfaces as described in greater detail herein, which direct a generated mist laterally and forward and rearward with respect to the nozzle 10.
  • the second portion of the diffuser 100 defines a preferred retainer portion 110 to redirect or restrict a majority of the mist to below the retainer portion 110 so as to minimize the droplet spray on the ceiling CLG.
  • the third portion of the diffuser 100 defines a preferred wedge 114 to separate the stage and retainer portions 108, 110 and define the laterally disposed open flow channels 112a, 112b. Additionally, the centrally located wedge 114 breaks the fluid discharge from the insert orifice 24 into multiple streams for the preferred distribution.
  • the voids of the diffuser 100 are all located along the periphery of the diffuser to define its external profile. Accordingly, the diffuser 100 is preferably a solid or imperforate member having no closed form through openings or penetrations such that all fluid flow is over the external surface of the diffuser 100.
  • the preferred stage 108 includes various surfaces to distribute a generated mist.
  • the frame arms 28 and the second bisecting plane BP2 are substantially parallel to the floor FLR and ceiling CLG, as seen in FIG. 1 .
  • the stage 108 includes a preferred planar upper surface 120 extending parallel to the second bisecting plane BP2 that opposes the retainer 110 to define the flow channel 112 therebetween.
  • the stage 108 preferably includes a lower surface 122 axially spaced from the upper surface 120 to define a preferred arcuate surface, and more preferably, a concave surface defined by at least one radius of curvature R1 about an axis of curvature C1 extending parallel to the diffuser axis D--D.
  • the axis of curvature C1 is laterally offset from the first bisecting plane BP1. Fluid discharged from the insert orifice 24 that impacts the diffuser 100 and streams over the lower arcuate surface 122 is preferably thrown forward of the nozzle 10.
  • the preferred upper and lower surfaces 120, 122 of the stage 108 define a variable height HI of the stage over the width W of the diffuser 100 with the maximum height at the most lateral edges of the stage 108 and the minimum height at the mid-point of the stage.
  • the maximum height HI of the stage 108 is about one half of the overall height H of the diffuser 100 and the minimum height HI of the stage 108 is about one half of the maximum height of the stage.
  • the stage 108 also defines an impact face 126 at the impact end 102 of the diffuser 100 that is symmetric about the first bisecting plane BP1.
  • the impact face 126 includes a lateral portion 128 and a preferably arcuate concave portion 130 between the lateral portion 128 and the first bisecting plane BP1.
  • the arcuate concave portion 130 is defined by a radius of curvature R2 about an axis of curvature C2 extending perpendicular to the diffuser axis D--D and parallel to and offset from the first bisecting plane BP1, the lateral portion being planar and disposed perpendicular to the diffuser axis D--D.
  • Fluid discharged from the insert orifice 24 that impacts the impact face 126 and streams over the lateral portion 128 is preferably thrown laterally and rearward of the nozzle and toward the wall WL as schematically shown in FIG. 6 .
  • the stage 108 includes a discharge face 132 that is planar extending perpendicular to the diffuser axis and formed about the securement portion 106.
  • the stage 108 preferably includes an arcuate periphery 134 contiguous with each of the impact face 126 and discharge face 132 of the stage.
  • the arcuate periphery defines a preferably external convex surface defined by a radius of curvature R3 about an axis of curvature C3 extending parallel to the first bisecting plane BP1 and perpendicular to the diffuser axis D--D.
  • the retainer 110 of the diffuser 100 is preferably formed as a substantially planar member that, in the installed position of the nozzle 100, is located above the stage 108.
  • the preferred retainer 110 has a preferably planar upper surface 140 and a lower surface 142 that includes a planar portion spaced from the upper surface 140 to define a height H2 of the retainer 110, which is preferably about 1/8 of the total diffuser height H.
  • the preferred lower planar surface portion 142 of the retainer 110 is preferably opposed to the upper surface 120 of the stage 108 about the second bisecting plane BP2 to define the flow channel 112 therebetween.
  • the upper surface 120 of the stage 108 is preferably located closer to the second bisecting plane BP2 than the lower surface 142 of the retainer 110.
  • the position and geometry of the retainer 110 are preferably configured to minimize or otherwise retain a generated mist of the nozzle 10 away from the ceiling CLG while providing sufficient cooling in the space between the nozzle 10 and the ceiling CLG.
  • the retainer 110 in combination with the stage 108, also facilitates the forward throw of the fluid mist to provide effective surface wetting below and about the nozzle 10.
  • each of the opposed surfaces 120, 142 of the respective stage and retainer components 108, 110 define a depth.
  • the retainer 110 preferably defines the maximum depth DP of the diffuser with the stage 108 having a smaller depth DP1 preferably about 2/3 of the maximum depth.
  • the retainer 110 is preferably located closer to the outlet 18 of the frame body 14 than the stage 108 such that the distance from the outlet 18 of the frame 12 to the retainer 110 is smaller than the distance from the outlet 18 to the stage 108.
  • the stage 108 and the retainer 110 define a retainer depth-to-stage depth ratio (DP:DP1) that is no more than 1.5:1.
  • the diffuser and its retainer 110 define a preferred maximum depth of about 0.3 inch. Moreover, the depth of each of the opposed stage and retainer surfaces 120, 142 define preferred ratios with the height (DP:H), (DP1:H) of the diffuser 100 that preferably ranges from 1:1 to 0.5:1. More preferably, the diffuser 100 defines a preferred minimum depth to height ratio that ranges from 1:1 to 0.5:1. As seen in FIG. 4 and 5 , the retainer 110 has a width W1 that is less than the stage width W with a ratio of stage width-to-retainer width (W:W1) being no more than 1.25:1.
  • each of the opposed stage and retainer surfaces 120, 142 define preferred ratios with the depth (W:DP1), (W1:DP) of the diffuser 100 that preferably ranges from 2:1 to 1:1. More preferably, the diffuser 100 defines a preferred minimum width to depth ratio that ranges from 2:1 to 1.3:1.
  • the wedge 114 spaces the stage 108 and the retainer 110 from one another to define the height of the one or more flow paths 112.
  • Various preferred surface geometries of the wedge 114 break up the fluid discharge from the orifice insert 24 to provide for a desired droplet size and direction of distribution.
  • the height of the flow path 112 is preferably about 3/8 of the overall height H of the diffuser.
  • the wedge 114 has an overall depth DP2 that is preferably equal to the depth DP1 of the stage 108.
  • the height of the flow path varies with the height H3 of the wedge 114, which preferably decrease over its depth DP2 in the direction from the impact end 102 to the discharge end 104 of the diffuser.
  • the retainer 110 and its planar surfaces 140, 142 are preferably angled with respect to the second bisecting plane BP2 defining a preferred included angle ⁇ therebetween of no more than 5 degrees and preferably defines an included angle ⁇ of 3 degrees.
  • the wedge 114 defines a variable width W2 over its depth DP2 in which the wedge width preferably increases in a direction from the impact end 102 to the discharge end 104.
  • the width W2 of the wedge 114 is defined by lateral surfaces 144 formed about the first bisecting plane BP1.
  • each lateral surface 144 includes a convex portion defined by a constant radius of curvature R4 from an axis of curvature C4 located on the opposite side of the first bisecting plane BP1 from the convex lateral surface 144.
  • the diffuser includes other arcuate surfaces along the wedge 114 to preferably break up fluid streams prior to mist dispersion forward of the nozzle 10.
  • one or more concave surfaces of the wedge 114 are preferably contiguous with lower surface 142 of the retainer 108.
  • the concave portion 146 increases in height in the direction from the impact end 102 to the discharge end 104, as seen in FIG. 3 .
  • the radius of curvature of the concave portion 146 can vary over the depth of the diffuser or can be constant. Accordingly, in a preferred embodiment of the diffuser 100 in which the wedge 114 defines internal surfaces of the open flow channels 112a, 112b, the flow paths are defined by internal convex and concave surfaces over which the fluid mist flows.
  • the diffuser 100 includes other surface features to direct fluid streams for the desired mist distribution.
  • one or more chamfered surfaces provide for transitional surfaces to direct fluid streams to the various regions of the diffuser for distribution in a desired manner.
  • the stage can include one central chamfer 150 and two lateral chamfers 152 to direct fluid stream toward the arcuate lower surface.
  • two chamfered surfaces 154 are disposed at the discharge end of the retainer 110 along the upper surface 140.
  • the preferred nozzle 10 is preferably configured as an automatic device which generates a firefighting mist in response to a stimulus.
  • the nozzle 10 has an unactuated state in which a sealing assembly 200 is disposed within the outlet 18 to prevent fluid discharge from the outlet.
  • the sealing assembly 200 is supported in the outlet 18 by a thermally responsive trigger device 202 that fractures in response to an predetermined level of heat to release the sealing assembly 200 and permit the discharge of fluid from the frame body 14.
  • the thermally responsive device is preferably embodied as a thermally responsive frangible bulb 202 which breaks in response to a threshold level of heat.
  • the preferred diffuser 100 provides for a bulb seat 160 formed and centered along the impact end 102 of the diffuser 100. Shown in FIGS. 2 , 3 and 4 are side and elevated views of the bulb seat formation 160.
  • the bulb seat 160 is preferably a concave substantially centered along the diffuser axis D-D for alignment with the preferably threaded securement portion 106 and nozzle axis A--A. Accordingly, axial translation of the diffuser 100 with respect to the outlet 18 of the frame body 14 can load the bulb 202 against the seal assembly 200 to seal outlet of the nozzle 100 and place the nozzle in an unactuated state.
  • a fluid nozzle comprising:
  • Clause 3 The fluid nozzle of Clause 1, wherein the retainer has a first surface defining a first depth in a direction of the diffuser axis, the stage having a second surface defining a second depth in the direction of the diffuser axis, the first and second surfaces being spaced apart to define the pair of flow channels therebetween, each of the first depth and the second depth defining a depth-to-diffuser height ratio that ranges from 1:1 to 0.5:1.
  • Clause 4 The fluid nozzle of any one of the above Clauses, wherein the wedge extends between the impact end and the discharge end and has a variable width over the depth of the diffuser such that the wedge variable width increases in the direction of the diffuser axis from the impact end to the discharge end.
  • each channel includes a convex portion and a concave portion.
  • Clause 7 The fluid nozzle of Clause 6, wherein the convex portion extends with a decreasing height from the impact end to the discharge end, the concave portion of the wedge extends with an increasing height from the impact end to the discharge end.
  • each convex portion is defined by a constant radius from an axis of curvature located on an opposite side of the first bisecting plane from the convex portion.
  • Clause 10 The fluid nozzle of Clause 9, wherein the lower surface of the stage includes an arcuate surface defining at least one radius of curvature about an axis of curvature extending parallel to the diffuser axis the arcuate surface being symmetrical about the bisecting plane.
  • Clause 11 The fluid nozzle of Clause 10, wherein the axis of curvature is laterally offset from the bisecting plane.
  • Clause 14 The fluid nozzle of any one of the above Clauses, wherein the retainer is a planar member disposed at an angle with respect to the diffuser axis, the planar member being axially spaced from the planar upper surface of the stage, the retainer defining a width that is less than the stage width with a ratio of stage width-to-retainer width being no more than 1.25:1, the stage and the retainer defining a retainer depth-to-stage depth ratio that is no more than 1.5:1.
  • Clause 16 The fluid nozzle of any one of the above Clauses, wherein the retainer has an upper surface and a lower surface defining a height of the retainer in between, the upper surface including a pair of chamfers along the upper surface.
  • Clause 18 The fluid nozzle of any one of the above Clauses, wherein the diffuser includes a seat formed at the impact end of the diffuser for supporting a thermally responsive trigger between the outlet and the diffuser.
  • Clause 19 The fluid nozzle of Clause 18, further comprising a thermally responsive bulb disposed within the diffuser seat for supporting a seal.
  • Clause 20 The fluid nozzle of any one of the above Clauses, wherein the diffuser is disposed internal to the nozzle frame.
  • Clause 21 The fluid nozzle of any one of the above Clauses, further comprising an annular orifice member disposed along the passageway between the inlet and the outlet, the annular orifice member defining a nominal K-factor of less than 2.
  • a method of fire protection of an occupancy using a sidewall mist nozzle comprising:

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Nozzles (AREA)
EP18248153.1A 2017-12-29 2018-12-28 Flüssigkeitsnebeldüse und verfahren mit einem asymmetrischen diffusor Pending EP3508256A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201762611976P 2017-12-29 2017-12-29
US201762611944P 2017-12-29 2017-12-29

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EP3508256A1 true EP3508256A1 (de) 2019-07-10

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5505383A (en) 1994-11-02 1996-04-09 Grinnell Corporation Fire protection nozzle
US6098718A (en) * 1997-12-03 2000-08-08 Senju Sprinkler Company Limited Horizontal sidewall sprinkler head
US6367559B1 (en) * 1998-12-29 2002-04-09 The Viking Corporation Double-blade deflector for side wall sprinkler
WO2010078559A1 (en) * 2009-01-02 2010-07-08 Tyco Fire Products Lp Mist type fire protection devices, systems and methods
WO2014151977A2 (en) * 2013-03-14 2014-09-25 Tyco Fire Products Lp Fire protection sprinkler assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5505383A (en) 1994-11-02 1996-04-09 Grinnell Corporation Fire protection nozzle
US6098718A (en) * 1997-12-03 2000-08-08 Senju Sprinkler Company Limited Horizontal sidewall sprinkler head
US6367559B1 (en) * 1998-12-29 2002-04-09 The Viking Corporation Double-blade deflector for side wall sprinkler
WO2010078559A1 (en) * 2009-01-02 2010-07-08 Tyco Fire Products Lp Mist type fire protection devices, systems and methods
WO2014151977A2 (en) * 2013-03-14 2014-09-25 Tyco Fire Products Lp Fire protection sprinkler assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
TYPE AM10 AND AM10B AQUAMIST NOZZLES NON-AUTOMATIC (OPEN, November 2015 (2015-11-01)

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