EP2624961B1 - Spritzpistole und tragbarer nebelerzeuger - Google Patents

Spritzpistole und tragbarer nebelerzeuger Download PDF

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Publication number
EP2624961B1
EP2624961B1 EP11778934.7A EP11778934A EP2624961B1 EP 2624961 B1 EP2624961 B1 EP 2624961B1 EP 11778934 A EP11778934 A EP 11778934A EP 2624961 B1 EP2624961 B1 EP 2624961B1
Authority
EP
European Patent Office
Prior art keywords
fluid
driving
process fluid
nozzle
spray gun
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.)
Not-in-force
Application number
EP11778934.7A
Other languages
English (en)
French (fr)
Other versions
EP2624961A1 (de
Inventor
Carl Hayton
James Oliver French
David James Doswell
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.)
3M Innovative Properties Co
Original Assignee
3M Innovative Properties Co
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Filing date
Publication date
Application filed by 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Publication of EP2624961A1 publication Critical patent/EP2624961A1/de
Application granted granted Critical
Publication of EP2624961B1 publication Critical patent/EP2624961B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B05B7/12—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages
    • B05B7/1209—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages the controlling means for each liquid or other fluent material being manual and interdependent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/002—Manually-actuated controlling means, e.g. push buttons, levers or triggers
    • B05B12/0022—Manually-actuated controlling means, e.g. push buttons, levers or triggers associated with means for restricting their movement
    • 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
    • A62C31/03—Nozzles specially adapted for fire-extinguishing adjustable, e.g. from spray to jet or vice versa
    • 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
    • A62C31/05—Nozzles specially adapted for fire-extinguishing with two or more outlets
    • A62C31/07—Nozzles specially adapted for fire-extinguishing with two or more outlets for different media
    • 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
    • B05B1/16—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 having selectively- effective outlets
    • B05B1/1627—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 having selectively- effective outlets with a selecting mechanism comprising a gate valve, a sliding valve or a cock
    • B05B1/1636—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 having selectively- effective outlets with a selecting mechanism comprising a gate valve, a sliding valve or a cock by relative rotative movement of the valve elements
    • B05B1/1645—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 having selectively- effective outlets with a selecting mechanism comprising a gate valve, a sliding valve or a cock by relative rotative movement of the valve elements the outlets being rotated during selection
    • B05B1/1654—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 having selectively- effective outlets with a selecting mechanism comprising a gate valve, a sliding valve or a cock by relative rotative movement of the valve elements the outlets being rotated during selection about an axis parallel to the liquid passage in the stationary valve element
    • 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
    • B05B7/0018—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 with devices for making foam
    • B05B7/0025—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 with devices for making foam with a compressed gas supply
    • B05B7/0031—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 with devices for making foam with a compressed gas supply with disturbing means promoting mixing, e.g. balls, crowns
    • B05B7/0037—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 with devices for making foam with a compressed gas supply with disturbing means promoting mixing, e.g. balls, crowns including sieves, porous members or the like
    • 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
    • B05B7/0491—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 the liquid and the gas being mixed at least twice along the flow path of the liquid
    • 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
    • B05B7/24—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 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2416—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle characterised by the means for producing or supplying the atomising fluid, e.g. air hoses, air pumps, gas containers, compressors, fans, ventilators, their drives
    • B05B7/2421—Gas containers
    • 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
    • B05B7/24—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 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2435—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle the carried liquid and the main stream of atomising fluid being brought together by parallel conduits placed one inside the other
    • B05B7/2437—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle the carried liquid and the main stream of atomising fluid being brought together by parallel conduits placed one inside the other and a secondary stream of atomising fluid being brought together in the container or putting the carried fluid under pressure in the container
    • 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
    • B05B7/24—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 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2475—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device comprising a container carried on the back of the user

Definitions

  • the present invention relates to the field of mist generation as generally known from document US 1 868 518 A . More specifically, the present invention provides a spray gun and a portable mist-generating apparatus.
  • the spray gun and apparatus are particularly suitable for rapid deployment and operation in decontamination, disinfection and fire suppression applications within buildings and other urban environments.
  • Portable mist-generating apparatus are known. These apparatus typically take the form of a backpack which is carried on the back of an operator, and a spray gun, or lance, which is held in the hands of the operator and is fluidly connected to the backpack for spraying the contents thereof.
  • These known apparatus rely on compressed gas to force the liquid stored in the backpack under pressure into the nozzle of the spray gun, whereupon the small diameter of the nozzle atomises the liquid as it exits the gun.
  • the compressed gas can be stored in a separate container within the backpack, or else can be held under pressure within the vessel containing the liquid.
  • twin-fluid atomisers have fixed flow rates for the two fluids, meaning that the ratio between the two fluids at the nozzle cannot be adjusted.
  • any apparatus employing such a device may be suitable for one application (e.g. high flow for fire suppression) but not particularly suitable for another application (e.g. low flow for cooling or decontamination purposes), where a spray having different characteristics is needed.
  • a spray gun comprising:
  • the flow adjustment device may include a set of driving fluid orifices upstream of the driving fluid passage, and a set of process fluid orifices upstream of the process fluid outlet, wherein each orifice in each set is a different diameter and may be selectively brought into fluid communication with the first nozzle to vary the respective driving and process fluid flow rates thereto.
  • the spray gun may further comprise a spray head housing the flow adjustment device, and wherein the flow adjuster is rotatable relative to the spray head to select the desired driving and process fluid orifices.
  • Each driving and process fluid orifice may be surrounded by a sealing member which engages an inner surface of the spray head, thereby hydraulically isolating each orifice from the other orifices in their respective sets.
  • the spray gun may further comprise a grip portion having a remote end to which a trigger member is pivotably connected, and one or more control valves housed at the remote end of the grip portion, wherein the control valves are selectively actuated by the trigger for controlling flow of driving and process fluid into the gun.
  • the spray gun may further comprise driving and process fluid supply hoses connecting the one or more control valves to the flow adjuster, wherein the hoses span the grip portion to shield an operator's hand when holding the grip portion.
  • the first nozzle may include at least one driving fluid bypass channel having a bypass inlet connected to the driving fluid inlet upstream of the throat, and a bypass outlet in communication with the process fluid supply upstream of the process fluid outlet.
  • the spray gun may further comprise a second compressed air foam nozzle, and the flow adjuster can selectively divert the process and driving fluids away from the first nozzle to the second nozzle.
  • the second nozzle may include an elongate expansion passage downstream thereof.
  • a mist-generating apparatus comprising:
  • the apparatus may further comprise a breathable air tank and breathing apparatus.
  • the apparatus may further comprise:
  • the apparatus may further comprise a flow restrictor intermediate the regulator and the flow adjustor, the restrictor comprising an elongate body having a bore whose diameter is substantially constant and less than that of the driving fluid supply line.
  • the frame may form part of a backpack to be carried by an operator.
  • the frame may form part of a trailer which can be towed by a vehicle.
  • FIG. 1 schematically shows the preferred components which make up a portable mist-generating apparatus according to the present invention.
  • the apparatus comprises a process fluid tank 1 containing a volume of process fluid to be sprayed by the apparatus.
  • the process fluid tank is in fluid communication with a spray gun, or lance, 3 via a first supply line 5.
  • the apparatus further comprises a driving fluid tank 7 containing a volume of driving fluid, which drives the process fluid out of the apparatus as a mist.
  • the driving fluid tank 7 may be in fluid communication with a regulator 9 via a second supply line 11.
  • the regulator 9 reduces the pressure of the driving fluid for downstream applications.
  • a manifold 12 may also be located in the second supply line 11 downstream of the regulator 9.
  • the manifold 12 is in fluid communication with the process fluid tank 1 and can divert driving fluid from the second supply line 11 into the process fluid tank 1 via a divert line 10 in order to increase and/or maintain pressure therein.
  • the manifold 12 is also in fluid communication with the spray gun 3 via a third supply line 13.
  • the third supply line 13 may be provided with a further regulator, flow control valve or restrictor 15 in order to further reduce the pressure of the driving fluid prior to it reaching the spray gun 3.
  • the restrictor 15 comprises an elongate body with a bore whose diameter is substantially constant and less than that of the third supply line 13.
  • the apparatus may also include a separate breathable air supply for use by an operator during the operation of the apparatus.
  • the air supply comprises a breathable air tank 17 which is in fluid communication with a conventional breathing apparatus 19.
  • An air regulator 21 may be located between the air tank 17 and breathing apparatus 19 so as to regulate air flow to the breathing apparatus 19.
  • the tanks 1,7,17 may have shut-off valves (not shown) which allow fluid flow from the tanks into the remainder of the apparatus when the valves are opened.
  • FIG. 2-5 An example of a spray gun 3 according to the present invention, and suitable for use with the mist-generating apparatus of figure 1 , is shown in figures 2-5 .
  • the gun 3 comprises a spray head 30 and a handle or grip portion 32 projecting rearwardly from the spray head 30.
  • a hand guard may be provided so as to protect an operator's hand when gripping the handle 32.
  • the hand guard comprises a pair of reinforced fluid supply hoses 36,38 spanning the underside of the handle 32.
  • the guard may also comprise a shield member 34 attached to the underside of the spray head 30 adjacent a proximal end of the handle 32.
  • First ends of the fluid supply hoses 36,38 connect into the spray head 30, whilst second ends of the hoses 36,38 connect into one or more control valves 40 which are attached to a distal end of the handle 32.
  • the handle 32 incorporates a pivotable trigger 33 which, when squeezed, pivots about a pivot point 35 adjacent the distal end of the handle 32 and actuates the control valve(s) 40 so that driving and process fluids may enter the spray head 30.
  • the spray head 30 comprises a first twin fluid atomising nozzle 50 and may further comprise a second, compressed air foam (CAF) nozzle 60.
  • the nozzles 50,60 are located within a flow adjustment device in the form of a fluid core 70, which is housed within the spray head 30 and can be rotated about a longitudinal axis L relative to the spray head 30 so as to switch the spray gun between different modes of operation, as will be explained in more detail below.
  • the fluid core 70 is at least partially located within a selector sleeve 42 and non-rotatably coupled thereto, such that rotation of the selector sleeve 42 rotates the fluid core 70 relative to the spray head 30.
  • a locator pin or ball 44 is biased by a biasing means 46 from the rear of the spray head 30 into one of a number of locator recesses 48 on the adjacent end of the fluid core 70.
  • the locator ball 44 will be pushed from its present recess against the force of the biasing means 46 and then enter into the next recess on the core 70. In this way the core 70 can be selectively secured in a number of positions which correspond to the different operating modes of the gun 3.
  • the spray head 30 is shown in exploded form in figure 6 .
  • the spray head 30 comprises a housing 80 within which the fluid core 70 is rotatably mounted.
  • the housing 80 is made up of three elements: a front fluid housing 82, a rear fluid housing 84, and a filter housing 86.
  • Each of the housing elements is formed such that they can be assembled into a single housing 80 and secured together by a number of fixing bolts 88 extending through a corresponding number of assembly apertures 90 formed within the elements.
  • the filter housing 86 includes driving and process fluid supply passages 92,94 connectable to supplies of driving and process fluids, as well as a pair of filters 96,98 which are located in filter apertures (not shown) and biased into the supply passages 92,94 by respective filter springs 100,102.
  • a sealing collar 104 atop each filter 96,98 ensures that the fluids do not leak from the passages 92,94 with the filters 96,98 in place.
  • driving and process fluid recesses On the rear face of the rear fluid housing 84 are driving and process fluid recesses (not shown) which, when the housing elements are all assembled together, form driving and process fluid chambers which are in fluid communication with the respective driving and process fluid supply passages 92,94.
  • Each recess has an O-ring seal 108 which is compressed between the filter housing 86 and rear fluid housing 84 when those elements are secured together so that no fluid may leak from the chambers where the rear fluid and filter housings 84,86 abut one another.
  • driving and process fluid galleries 110,112 Located on opposite sides of the rear fluid housing 84 are driving and process fluid galleries 110,112 which are in fluid communication with their respective driving and process fluid chambers.
  • Access ports 114 are provided either side of the rear fluid housing 84 so that the internal portions of the rear fluid housing 84 can be machined more easily, and so that the galleries 110,112 may be accessed for maintenance purposes. In service, each access port 114 is sealed by a removable sealing plug 116.
  • the fluid core 70 is located within a central bore 118 within the front and rear fluid housings 84,86.
  • the fluid core 70 will be described in more detail below, but first twin fluid atomising nozzle 50 and second compressed air foam (CAF) nozzle 60 can be seen in figure 6 .
  • the first and second nozzles 50,60 are housed in nozzle chambers at respective first and second ends 71,73 of the fluid core 70.
  • the CAF nozzle 60 has a substantially cylindrical body 62, with two sets of circumferentially spaced driving fluid and process fluid apertures 64,66 through which the respective fluids enter the nozzle 60. Within the body 62 downstream of the apertures 64,66 are a plurality of perforated discs 68 through which the fluids must pass before exiting the nozzle 60.
  • the front fluid housing 82 includes a pair of circumferential guide slots 120,122.
  • the front fluid housing 82 is secured to the rear fluid housing 84 over the fluid core 70, and then a pair of guide pins 124,126 are inserted into the guide slots 120,122 and secured in corresponding threaded guide apertures 128 on the exterior of the fluid core 70.
  • the guide slots 120,122 are of a predetermined length so as to limit relative rotational movement to only that necessary to cover the various adjustment positions of the spray head 30.
  • the final step in assembling the spray head 30 is to place the adjuster sleeve 42 over the end of the front fluid housing 82 so that locating apertures 130,132 in the end of the sleeve 42 align with corresponding apertures 134,136 in the first end 71 of the fluid core 70.
  • Mechanical fixtures 138 locate in the apertures to non-rotatably fix the sleeve 42 to the fluid core 70.
  • rotation of the sleeve 42 will rotate the fluid core 70 relative to the housing 80.
  • a reference indicator 140 is provided on the exterior of the front fluid housing 82, and mode indicators 142 are provided on the exterior of the sleeve 42. These indicators 140,142 co-operate to indicate the relative rotational position of the fluid core 70 within the housing 80, and hence the current operating mode of the spray head 30.
  • the fluid core 70 is shown in more detail in figures 7-15 .
  • the core 70 comprises an upstream section 74 and a downstream section 75.
  • the upstream section 74 contains two sets of driving fluid and process fluid orifices 160,162, which are axially spaced from one another on the exterior of the upstream section 74.
  • Each of the orifices 160,162 has a different diameter, such that the fluid flow rate through each orifice 160,162 will differ from the others.
  • each orifice in the respective sets 160,162 is circumferentially spaced from the other orifices in its set with a predetermined rotational angle between each orifice in each set.
  • each orifice is at 22.5° relative to the adjacent orifice in its set.
  • the two sets of orifices 160,162 are also diametrically opposed on the core 70, so that corresponding orifices (e.g. 160b,162b) in each set will be in fluid communication with their respective galleries 110,112 in the rear fluid housing 84 at the same time.
  • Figure 8 shows the three driving fluid orifices 160a-c.
  • the first driving fluid orifice 160a has the largest diameter, whilst the diameter of the second driving fluid orifice 160b is less than that of the first orifice 160a.
  • the diameter of the third driving fluid orifice 160c is smaller than both the first and second orifices 160a,160b.
  • the first and second driving fluid orifices 160a 160b are for use in high flow (e.g. fire suppression) and low flow (e.g. decontamination) modes of the spray gun, whilst the third driving fluid orifice 160c is for use in a foaming mode.
  • the first and second driving fluid orifices 160a,160b are in fluid communication with a driving fluid gallery 164 which is in turn in fluid communication with a first driving fluid passage 166 (not shown in figure 8 ), which delivers driving fluid into the twin fluid atomising nozzle 50 within the core 70.
  • the third driving fluid orifice 160c is in fluid communication with a second driving fluid passage 168 which delivers driving fluid into the CAF nozzle 60 within the core 70.
  • Each of the driving fluid orifices 160a-c is surrounded by an O-ring seal 163 which seals against the wall of the central bore 118 within the rear fluid housing 84. These seals 163 allow the orifices, and hence the various modes of operation of the spray gun, to be hydraulically isolated from one another.
  • Figure 9 shows the process fluid orifices 162a-c and as with the driving fluid orifices 160 the first process fluid orifice 162a has the largest diameter whilst the diameter of the second process fluid orifice 162b is less than that of the first orifice 162a. However, the diameter of the third process fluid orifice 162c is smaller than that of the first orifice 162a, but greater than that of the second orifice 162b.
  • the first and second process fluid orifices 162a,162b are for use in high flow (e.g. fire suppression) and low flow (e.g.
  • the third process fluid orifice 162c is for use in the foaming mode.
  • the first and second process fluid orifices 162a,162b are in fluid communication with a process fluid gallery 170 which is in turn in fluid communication with a first process fluid passage 172 (not shown in figure 9 ), which delivers process fluid into the twin fluid atomising nozzle 50 within the core 70.
  • the third process fluid orifice 162c is in fluid communication with a second process fluid passage 174 which delivers process fluid into the CAF nozzle 60 within the core 70.
  • each of the process fluid orifices 162a-c is surrounded by an O-ring seal 163 which seals against the wall of the central bore 118 within the rear fluid housing 84 to hydraulically isolate each mode of operation of the spray gun.
  • Figure 10 is a view of the first end 71 of the fluid core 70. It shows a first nozzle outlet 59 of the first, twin fluid nozzle 50 and a second nozzle outlet 69 of the second, CAF nozzle 60. Also visible are the apertures 134,136 by which the sleeve 42 is non-rotatably attached to the core 70.
  • the first process fluid passage 172 is also visible in figure 10 as it opens on the first end 71 of the core 70.
  • the first end 71 of the core 70 abuts a rear face (not shown) of the front fluid housing 82, such that the first process fluid passage 172 is sealed off by the front fluid housing 82 when all of the components are assembled together.
  • Figure 11 shows a longitudinal section through the fluid core 70. Both the first and second nozzles 50,60 are shown, although it should be noted that the internal components of the second nozzle 60 have been omitted for clarity.
  • the first nozzle 50 will be described in detail below, but it can be seen in figure 11 that the outlet 69 of the second nozzle 60 is at the end of an elongate expansion passage 67 extending along much of the length of the core 70 from the second nozzle 60.
  • Figures 12 and 13 show the relative positions of the first nozzle 50, second nozzle expansion passage 67, and the first process fluid passage 172 at two points adjacent the first end 71 of the core 70.
  • the first nozzle 50 can be seen in more detail in the longitudinal section views of figures 14 and 15 .
  • the first process fluid passage 172 conveys process fluid from the process fluid gallery 170 to the nozzle 50
  • the first driving fluid passage 166 conveys driving fluid from the driving fluid gallery 164 to the nozzle 50.
  • the nozzle 50 itself has a central passage 182 having an inlet 184 in fluid communication with the first driving fluid passage 166.
  • the central passage 182 also has an outlet 188 and a throat portion 186 intermediate the inlet 184 and the outlet 188.
  • the throat portion 186 has a cross sectional area which is less than that of both the inlet 184 and the outlet 188.
  • a process fluid outlet 190 circumscribes at least part of the central passage 182 and opens into the central passage 182 at, or downstream of, the throat portion 186.
  • the process fluid outlet 190 is connected to the first process fluid passage 172 via an annular chamber 192 which surrounds a portion of the central passage 182.
  • the process fluid outlet 190 may be adapted, as is shown in the illustrated embodiment, so that the process fluid is introduced into the central passage 182 in the opposing direction to the direction of flow of driving fluid through the central passage 182.
  • the first nozzle 50 may include one or more driving fluid bypass channels 183, with each bypass channel 183 having an inlet 185 connected to the central passage inlet 184 upstream of the central passage throat 186, and an outlet 187 in the process fluid passage intermediate the annular chamber 192 and the process fluid outlet 190. In this way a small portion of the driving fluid can be introduced into the process fluid prior to the process fluid entering the nozzle 50, thus effecting a partial atomisation of the process fluid before the full atomisation takes place within the nozzle 50.
  • FIGs 16-18 illustrate an embodiment of the invention which is to be carried by an operator.
  • the supply components of the system are mounted in a backpack 200 which can be carried on the back of the operator.
  • the backpack 200 has been omitted from figure 17 for illustrative purposes, but as shown in figure 16 it includes a frame 202, a pair of shoulder straps 204 and a waist strap 206.
  • One end of each shoulder strap 204 is attached to an upper portion of the frame 202 whilst the other end of each shoulder strap 204 is attached to respective ends of the waist strap 206.
  • a two-piece snap-fit clasp 208 is provided, with one piece attached to either end of the waist strap 206, for securing the backpack 200 to the operator.
  • the frame 202 includes one or more back pads 210 which provide the operator with a degree of cushioning when wearing the backpack 200.
  • the process fluid, driving fluid and (where present) breathable air tanks 1,7,17 are removably attached to, and supported by, the backpack frame 202.
  • the tanks 1,7,17 may all be attached to the frame 202 in the upright position or, as illustrated they may all be inverted with their respective supply lines running up inside the frame 200.
  • each of the process and driving fluid tanks 1,7 has a 6 litre capacity.
  • the spray gun 3 may be removably attached to one of the shoulder straps 204, whilst the breathing apparatus 19 (shown in figure 1 ) may be removably attached to the other of the shoulder straps 204 so that the operator may have both hands free when not using the apparatus.
  • Figures 16-18 also show the various supply lines and associated components shown schematically in figure 1 .
  • the process fluid tank 1 supplies process fluid to the spray gun 3 via the first supply line 5.
  • the driving fluid tank 7 supplies driving fluid to the spray gun via the second supply line 11, regulator 9, and third supply line 13.
  • the regulator 9 may be in fluid communication with the process fluid tank 1 and selectively divert driving fluid from the second supply line 11 into the process fluid tank 1 via the divert line 10 in order to increase and/or maintain pressure therein.
  • Figures 19 and 20 show an alternative embodiment of the invention which is to be towed behind a vehicle, which is preferably a motorcycle in order to allow the apparatus to reach a desired location quickly and without being hindered by heavy traffic in urban locations.
  • the apparatus may also be manoeuvred by hand in the manner of a wheelbarrow as shown in the figures.
  • the apparatus comprises a frame 260, which has a tow bar 262 at one end thereof and a wheel mounting portion 264 at the opposite end of the frame from the tow bar 262.
  • the free end 263 of the tow bar 262 is provided with means for attaching the tow bar 262 to a vehicle, and also at least one hand grip 265 which allows an operator to manoeuvre the apparatus by hand.
  • At least one wheel 266 is rotatably supported on the wheel mounting portion 264.
  • Mounted on the frame 260 is a body 268 upon which the supply components of the system are mounted.
  • the process fluid and driving fluid tanks 1,7 are removably attached to, and supported by, the body 268.
  • there are two sets of tanks 1,7 but only the process fluid tank 1 of each set is visible in figures 19 and 20 .
  • a pair of spray guns 3 are removably attached to the body 268 adjacent the wheel mounting portion 264 of the frame 260.
  • Each spray gun 3 is connected to its respective set of process and driving fluid tanks 1,7 by supply lines coiled on revolving reels 270, which are rotatably supported by the body 268.
  • the apparatus may only comprise one set of tanks 1,7 and a single spray gun 3, or a plurality of tanks 1,7 and respective spray guns 3 depending on requirements.
  • the process and driving fluid tanks 1,7 are filled with their respective fluids.
  • the process fluid may be water, a liquid decontaminant or a liquid fire suppressant, for example, and may be pressurised within the tank 1.
  • the driving fluid may be a gas such as compressed air, carbon dioxide or nitrogen, for example, and is held in its respective tank 7 at a relatively high pressure (e.g. 300 bar gauge).
  • the regulator 9 and manifold 12 allow the driving fluid to perform two functions. Firstly, the regulator 9 reduces the pressure of the driving fluid to a much lower pressure (e.g.
  • the manifold 12 can then direct a portion of the lower pressure driving fluid into the process fluid tank 1 as required to pressurise the process fluid and force it from its tank 1 along supply line 5 to the spray gun 3. Secondly, as will be explained in more detail below, with or without the manifold 12 driving fluid not directed into the process fluid tank 1 is fed directly into the spray gun 3 via supply line 13, where it atomises the process fluid in the spray gun 3.
  • the restrictor 15 is preferably provided in supply line 13 to drop the driving fluid pressure to a still lower pressure (e.g. 8.5 bar gauge) before the driving fluid enters the spray gun.
  • the fluid core 70 has three driving fluid orifices 160a-c and three process fluid orifices 162a-c. The rotational position of the fluid core 70 determines which of these orifices 160,162 are in fluid communication with the galleries 110,112 and hence which mode the spray gun is in.
  • the spray head 44 will be in a first, high flow setting initially, wherein the ratio of process fluid to driving fluid at the atomising nozzle 80 is substantially 8:1. That is, a flowrate of 8kg/min of process fluid for every 1kg/min of driving fluid.
  • the pressures of the fluids as they enter the nozzle in the high flow setting will be approximately 11 bar gauge for the process fluid and 8.5 bar gauge for the driving fluid.
  • Adjusting the spray head 44 to a second, low flow setting decreases the aforementioned ratio of process fluid to driving fluid to substantially 2:1. That is, a flowrate of 2kg/min of process fluid for every 1 kg/min of driving fluid.
  • the smaller diameter orifices 160b,162b create the required flow restrictions within the fluid core 70 to reduce the pressure of both fluids to 4.2 bar gauge.
  • the low flow mode may reduce the aforementioned flow ratio to 1:1, that is 1 kg/min of process fluid for every 1 kg/min of driving fluid.
  • the spray head 44 may include one or more intermediate settings between low and high flow, which produce corresponding intermediate flow ratios.
  • driving and process fluids arrive at the first nozzle 50 via their respective supply passages 166,172.
  • the throat portion 186 of the central passage 182 has a smaller cross sectional area than both the inlet 184 and outlet 188 of the passage 182, pressurised driving fluid entering the throat 186 undergoes a significant acceleration.
  • a thin annulus of process fluid enters the passage 182 at, or downstream of, the throat 186 via the process fluid outlet 190.
  • the accelerating driving fluid hits the annulus of process fluid it applies a shear force to the process fluid.
  • the driving fluid may also undergo an expansion downstream of the throat 186, thereby generating a turbulent zone in the passage 182 which leads to further atomisation of the process fluid.
  • the differences in velocity, temperature and pressure between the driving and process fluids in the nozzle 50 may also lead to a momentum transfer from the high velocity driving fluid to the lower velocity process fluid.
  • This combination of shear, turbulence and momentum transfer atomises the process fluid and creates a dispersed phase of process fluid droplets in a continuous vapour phase of driving fluid downstream of the nozzle throat 186. This flow then exits the nozzle outlet 188 as a mist plume of process fluid droplets.
  • Dv90 280 ⁇ m
  • Dn90 148 ⁇ m
  • the results were obtained using a Malvern SprayTec device sampling at 1 Hz over a period of 30 seconds of continuous spraying at a point 4.7m from the nozzle outlet.
  • the process fluid was water and the driving fluid was compressed air.
  • the ratio of water pressure to gas pressure at the nozzle was approximately 1:1 in the first setting and 1.4:1 in the second setting.
  • a process fluid tank containing an aqueous film-forming foam is attached to the frame of the backpack or trailer and connected to the gun 3 via the supply line 5.
  • the fluid core 70 is then rotated into the CAF position wherein orifices 160c,162c connect their respective galleries 110,112 with the driving and process fluid apertures 64,66 of the CAF nozzle 60.
  • the trigger 33 is operated and the control valve(s) 40 open the fluids flow into the CAF nozzle 60, whereupon a CAF mixture consisting of bubbles of the driving fluid within the AFFF fluid is created.
  • the resultant foaming mixture then expands as it travels along the expansion passage 67 before being sprayed from the outlet 69.
  • twin fluid atomising nozzle, the spray gun and apparatus are able to generate a mist of very small droplets and project that mist over a substantial distance. Thanks to the combination of shear, turbulence and momentum transfer between the high velocity driving fluid and the process fluid the droplets generated by the atomising nozzle are smaller than those which can be generated by conventional portable mist/spray apparatus and consequently are able to adhere to substantially vertical surfaces as well as out of sight surfaces such as the undersides of tables and chairs, for example.
  • the present invention allows an operator to deal with an incident in the most efficient way without the need to carry extra components to cover all eventualities.
  • the 1:1 or 2:1 ratio setting is preferable for decontamination and heat suppression operations
  • the 8:1 ratio setting is preferably for directly addressing the seat of a fire, for example, whilst the CAF nozzle is for use where foam suppressants need to be deployed.
  • the operator can adjust the settings simply by rotating the selector sleeve at the spray head.
  • the portability of the mist generating apparatus of the present invention makes it suitable for use by teams of fast-action first responders sent to tackle incidents involving fire, contamination, infection or a combination thereof.
  • the present invention also provides an ergonomically improved spray gun. This provides a degree of opposite moment to the spray head of the gun, meaning that the gun is better balanced in an operator's hand.
  • the apparatus may further comprise a compressor adapted to pressurise the driving fluid stored within the driving fluid tank.
  • the tanks may be detached from the backpack or trailer frame in order to be refilled or replaced. Consequently, different tanks containing different process fluids can be attached dependent on the application for the system.
  • the spray gun may further comprise an infra red camera and display module to assist an operator in detecting the seat of a fire, for example.
  • the display module may include an electronic control unit incorporating one or more of the following functions: a GPS system, compass, tank fluid level monitor and display, thermometer, and text-based communication system for use when conventional audio communication is not possible.
  • the invention is not limited to a spray gun incorporating the CAF nozzle.
  • the spray gun may only comprise the twin fluid atomising nozzle employing the high and low flow modes.
  • the CAF nozzle may also be replaced by an alternative nozzle offering particular spray characteristics, with the alternative nozzle still being in parallel with the first nozzle.
  • the spray head of the gun is preferably rotatable in order to adjust the spray gun mode.
  • an alternative embodiment of the gun incorporating only the twin fluid atomising nozzle may instead have a fixed spray head and fluid core, and a flow adjustment device in the form of an outer sleeve rotatably supported on the spray head.
  • the sleeve has a cylindrical portion extending axially between the fluid housing and the fluid core.
  • the extending portion of the sleeve has the sets of driving and process fluid orifices thereon, and rotation of the sleeve relative to the housing and fluid core will selectively bring one of the inlet apertures into communication with the galleries of the fluid housing and the internal passageways of the fluid core.
  • the process fluid tank may comprise a primary reservoir and a secondary reservoir, the secondary reservoir being adapted to selectively introduce its contents into the primary reservoir.
  • the tank may include an actuator in order to manually introduce the secondary reservoir contents into the primary reservoir.
  • the apparatus may be selectively used for two applications. For example, with water in the primary reservoir and a concentrated disinfection or decontamination agent in the secondary reservoir, the apparatus may be used for fire suppression (i.e. using water only) or decontamination depending on whether the operator chooses to introduce the agent from the secondary reservoir into the primary reservoir.
  • the process fluid tank may be adapted such that the agent in the secondary reservoir is mixed with the process fluid from the primary reservoir downstream of the primary reservoir rather than the agent being introduced directly into the primary reservoir.
  • a further manifold or similar flow control device may be included in either of these embodiments so as to control the rate at which the contents of the secondary reservoir are introduced to the process fluid.
  • the secondary reservoir may be in a separate casing to the primary reservoir.
  • These secondary reservoirs may be controlled by a regulating/mixing device so as to be mixed individually or in combination with the fluid from the primary reservoir so as to make different decontamination solutions for tackling different hazards.
  • These different mixing scenarios could be chosen by the operator depending on the information they receive about the nature of the threat they are facing, so as to produce a tailored solution for a particular hazard, or a broad spectrum treatment where details of the hazard are less clear.
  • the secondary reservoirs, if separate from the primary reservoir may be individually pressurized (e.g.
  • the secondary reservoirs may be connectable to the CAF fluid supply, either at point of mixing with the driving fluid or upstream thereof, so as to produce a foam with decontaminating chemicals incorporated in it.
  • the trailer may further comprise additional reels of piping or hose that are deployed behind the trailer as it enters the scene of the incident.
  • a free end of the hose is left outside of the scene and contains connectors such that subsequent teams of operators (so-called "second responders") can connect additional sources of the fluids to the additional hoses.
  • second responders subsequent teams of operators
  • the trailer body may incorporate a stretcher for driving casualties away from a scene.
  • the spray gun may include a puncture tool attached to the spray head for creating holes in doors and the like, thereby allowing the operator to spray into a room without entering the space.
  • the invention is not limited to the specific flow ratios referred to in description of the preferred embodiment. Whilst these ratios are preferred, the invention may be modified so that other flow ratios are obtained when the flowrate of the process fluid is adjusted at the spray head.
  • the process fluid outlet opens into the central nozzle passage.
  • the process fluid outlet may be located at any point at, or downstream of, the central passage throat. This includes an atomising nozzle having a process fluid outlet which opens into the driving fluid flow downstream of the central passage outlet.
  • the spray gun of the present invention may switch between different modes of operation, but hydraulically isolates those different modes from one another.
  • the rear fluid housing may incorporate a pair of springloaded plungers, which selectively engage respective driving and process fluid orifices from each set and provide the fluid communication between the driving and process fluid galleries in the rear fluid housing and the passages within the fluid core.

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

Claims (15)

  1. Eine Sprühpistole, die Folgendes beinhaltet:
    eine erste Zerstäubungsdüse (50), die einen Antriebsfluiddurchgang (182) mit einem Antriebsfluideinlass (184), einem Antriebsfluidauslass (188) und einem Halsabschnitt (186) zwischen dem Antriebsfluideinlass (184) und dem Antriebsfluidauslass (188) umfasst, wobei der Halsabschnitt (186) eine Querschnittsfläche aufweist, die kleiner als die von sowohl dem Antriebsfluideinlass (184) als auch dem Antriebsfluidauslass (188) ist; und
    eine Strömungseinstellungsvorrichtung (70), die mit Antriebs- und Prozessfluidzuführungen verbindbar ist und angepasst ist, das Verhältnis von Prozessfluid zu Antriebsfluid, die der ersten Düse (50) zugeführt werden, selektiv zu variieren;
    dadurch gekennzeichnet, dass die erste Düse (50) ferner einen Prozessfluidauslass (190) umfasst, der sich an dem Antriebsfluidhals (186) oder stromabwärts davon befindet.
  2. Sprühpistole gemäß Anspruch 1, wobei die Strömungseinstellungsvorrichtung (70) einen Satz Antriebsfluidöffnungen (160) stromaufwärts des Antriebsfluiddurchgangs (182) und einen Satz Prozessfluidöffnungen (162) stromaufwärts des Prozessfluidauslasses (190) umfasst, wobei jede Öffnung (160, 162) in jedem Satz einen anderen Durchmesser aufweist und selektiv in Fluidkommunikation mit der ersten Düse (50) gebracht werden kann, um die entsprechenden Antriebs- und Prozessfluidströmungsraten zu dieser zu variieren.
  3. Sprühpistole gemäß Anspruch 2, ferner beinhaltend einen Sprühkopf (80), der die Strömungseinstellungsvorrichtung (70) unterbringt, und wobei die Strömungseinstellungsvorrichtung (70) relativ zu dem Sprühkopf (80) drehbar ist, um die gewünschten Antriebs- und Prozessfluidöffnungen (160, 162) auszuwählen.
  4. Sprühpistole gemäß Anspruch 3, wobei jede Antriebs- und Prozessfluidöffnung (160, 162) von einem Dichtungselement (163) umgeben ist, das in eine innere Oberfläche des Sprühkopfs (80) eingreift, wodurch jede Öffnung (160, 162) hydraulisch von den anderen Öffnungen in ihren entsprechenden Sätzen isoliert wird.
  5. Sprühpistole gemäß einem der vorhergehenden Ansprüche, ferner beinhaltend einen Griffabschnitt (32) mit einem entfernten Ende, mit dem ein Auslöserelement (33) schwenkbar verbunden ist, und ein oder mehrere Steuerventile (40), die an dem entfernten Ende des Griffabschnitts (32) untergebracht sind, wobei die Steuerventile (40) durch den Auslöser (33) selektiv betätigt werden, um die Strömung von Antriebs- und Prozessfluid in die Pistole zu steuern.
  6. Sprühpistole gemäß Anspruch 5, ferner beinhaltend Antriebs- und Prozessfluidzuführungsschläuche (36, 38), die das eine oder die mehreren Steuerventile (40) mit der Strömungseinstellungsvorrichtung (70) verbinden, wobei die Schläuche (36, 38) den Griffabschnitt (32) überspannen, um die Hand einer Bedienperson beim Halten des Griffabschnitts (32) zu schützen.
  7. Sprühpistole gemäß einem der vorhergehenden Ansprüche, wobei die erste Düse (50) mindestens einen Antriebsfluidumgehungskanal (183) mit einem Umgehungseinlass (185), der mit dem Antriebsfluideinlass (184) stromaufwärts des Halses (186) verbunden ist, und einem Umgehungsauslass (187) in Kommunikation mit der Prozessfluidzuführung stromaufwärts des Prozessfluidauslasses (190) umfasst.
  8. Sprühpistole gemäß einem der vorhergehenden Ansprüche, ferner beinhaltend eine zweite Druckluftschaumdüse (60), und wobei die Strömungseinstellungsvorrichtung (70) das Prozess- und Antriebsfluid selektiv von der ersten Düse (50) zu der zweiten Düse (60) umlenken kann.
  9. Sprühpistole gemäß Anspruch 8, wobei die zweite Düse (60) stromabwärts davon einen länglichen Expansionsdurchgang (67) umfasst.
  10. Eine Nebelerzeugungseinrichtung, die Folgendes beinhaltet:
    ein tragbares Gestell (202, 260) mit einem Antriebsfluidtank (7) und einem daran angebrachten Prozessfluidtank (1); und
    die Sprühpistole (3) gemäß einem der Ansprüche 1 bis 9, wobei die Strömungseinstellungsvorrichtung (70) mit dem Antriebsfluid- und Prozessfluidtank (7, 1) in Fluidkommunikation ist.
  11. Einrichtung gemäß Anspruch 10, ferner beinhaltend einen Atemlufttank (17) und eine Atmungseinrichtung (19).
  12. Einrichtung gemäß Anspruch 10 oder Anspruch 11, die ferner Folgendes beinhaltet:
    eine Antriebsfluidzuführungsleitung (11, 13), welche den Antriebsfluidtank (7) und die Strömungseinstellungsvorrichtung (70) verbindet;
    einen Regler (9), der sich an der Antriebsfluidzuführungsleitung (11) befindet und angepasst ist, den Druck des Antriebsfluids stromaufwärts der Strömungseinstellungsvorrichtung (70) zu reduzieren; und
    einen Verteiler (12), der sich an der Antriebsfluidzuführungsleitung (11, 13) stromabwärts des Reglers (9) befindet, wobei der Verteiler (12) angepasst ist, Antriebsfluid in den Prozessfluidtank (1) umzulenken, um das Prozessfluid darin unter Druck zu setzen.
  13. Einrichtung gemäß Anspruch 12, ferner beinhaltend einen Strömungsbegrenzer (15) zwischen dem Regler (9) und der Strömungseinstellungsvorrichtung (70), wobei der Begrenzer (15) einen länglichen Körper mit einer Bohrung, dessen Durchmesser im Wesentlichen konstant und kleiner als der der Antriebsfluidzuführungsleitung (11, 13) ist, beinhaltet.
  14. Einrichtung gemäß einem der Ansprüche 10 bis 13, wobei das Gestell (202) Teil eines Rucksacks (200), der von einer Bedienperson getragen wird, bildet.
  15. Einrichtung gemäß einem der Ansprüche 10 bis 13, wobei das Gestell (260) Teil eines Anhängers, der von einem Fahrzeug gezogen werden kann, bildet.
EP11778934.7A 2010-10-08 2011-10-10 Spritzpistole und tragbarer nebelerzeuger Not-in-force EP2624961B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1016967.0A GB201016967D0 (en) 2010-10-08 2010-10-08 Portable mist-generating apparatus
PCT/GB2011/001459 WO2012046010A1 (en) 2010-10-08 2011-10-10 Spray gun and portable mist-generating apparatus

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Publication Number Publication Date
EP2624961A1 EP2624961A1 (de) 2013-08-14
EP2624961B1 true EP2624961B1 (de) 2018-03-14

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RU170195U1 (ru) * 2016-12-06 2017-04-18 Евгений Геннадьевич Фадеев Устройство для нанесения двухкомпонентных жидких составов для теплоизоляции и гидроизоляции поверхности
CN106964505A (zh) * 2017-05-12 2017-07-21 镇江捷成植保科技有限公司 牵引式喷雾机
CN107961474A (zh) * 2018-01-05 2018-04-27 北京金同泰科技有限公司 一种喷枪头、喷枪以及灭火装置
CN108144772A (zh) * 2018-02-28 2018-06-12 安吉县大志家具制造有限公司 一种铁椅子喷涂装置
AT522886B1 (de) * 2019-11-25 2021-03-15 Rosenbauer Int Ag Lanze, insbesondere Löschlanze für die Brandbekämpfung
CN117159264B (zh) * 2023-09-07 2024-10-22 河南翔宇医疗设备股份有限公司 一种低温冷疗设备的喷枪

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NL8203990A (nl) * 1982-10-15 1984-05-01 Cornelis Elizabeth Rijlaarsdam Inrichting voor het synchroon mengen en verstuiven van meerdere kleurstoffen.
US6042026A (en) * 1998-07-02 2000-03-28 Buehler, Ii; Louis C. Spray nozzle
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TW201233450A (en) 2012-08-16
CA2812581A1 (en) 2012-04-12
WO2012046010A1 (en) 2012-04-12
GB201016967D0 (en) 2010-11-24
EP2624961A1 (de) 2013-08-14
CA2812581C (en) 2018-11-27

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