EP3003541A1 - Schaumerzeugungsvorrichtung - Google Patents
SchaumerzeugungsvorrichtungInfo
- Publication number
- EP3003541A1 EP3003541A1 EP13727228.2A EP13727228A EP3003541A1 EP 3003541 A1 EP3003541 A1 EP 3003541A1 EP 13727228 A EP13727228 A EP 13727228A EP 3003541 A1 EP3003541 A1 EP 3003541A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- foaming
- section
- flow channel
- sieve
- foam
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/0018—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
- B05B7/005—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 wherein ambient air is aspirated by a liquid flow
- B05B7/0056—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 wherein ambient air is aspirated by a liquid flow with disturbing means promoting mixing, e.g. balls, crowns
- B05B7/0062—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 wherein ambient air is aspirated by a liquid flow with disturbing means promoting mixing, e.g. balls, crowns including sieves, porous members or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/235—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids for making foam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/311—Injector mixers in conduits or tubes through which the main component flows for mixing more than two components; Devices specially adapted for generating foam
- B01F25/3111—Devices specially adapted for generating foam, e.g. air foam
- B01F25/31112—Devices specially adapted for generating foam, e.g. air foam with additional mixing means other than injector mixers, e.g. screen or baffles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
- B01F25/3121—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/316—Injector mixers in conduits or tubes through which the main component flows with containers for additional components fixed to the conduit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/45—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads
- B01F25/452—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces
- B01F25/4521—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces the components being pressed through orifices in elements, e.g. flat plates or cylinders, which obstruct the whole diameter of the tube
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/45—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads
- B01F25/452—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces
- B01F25/4523—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces the components being pressed through sieves, screens or meshes which obstruct the whole diameter of the tube
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/50—Movable or transportable mixing devices or plants
- B01F33/501—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use
- B01F33/5011—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held
- B01F33/50114—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held of the hand-held gun type
-
- 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
- B05B7/244—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using carrying liquid for feeding, e.g. by suction, pressure or dissolution, a carried liquid from the container to the nozzle
- B05B7/2443—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using carrying liquid for feeding, e.g. by suction, pressure or dissolution, a carried liquid from the container to the nozzle the carried liquid and the main stream of carrying liquid being brought together downstream of the container before discharge
Definitions
- the invention relates to a foam-producing device, in particular as an accessory for a high-pressure cleaning device, which comprises or forms a flow channel and a nozzle body having an outlet opening and a frothing element, which has a frothing section arranged in the flow channel upstream of the outlet opening, wherein a frothable detergent through the Flow channel flows to the outlet opening and is foamed when passing through the AufMumabites, and wherein the nozzle body at the outlet opening comprises a beam shaping element for forming a flat jet of the foamed cleaning agent.
- Such a foaming device serves to provide a foamed cleaning agent (cleaning foam) in order to achieve a good cleaning effect.
- the device may in particular be an accessory for a high-pressure cleaning device and be connected, for example, with its blasting gun or jet pipe, so that the cleaning effect of the high-pressure cleaning device can be increased by using the foam-generating device.
- the foamable cleaning agent is in particular a mixture of a carrier liquid, especially water, and one of these blended cleaning chemical. It is preferably a homogeneous mixing of the cleaning chemical and the carrier liquid.
- air is additionally contained which, for example, can enter the flow channel upstream of the foaming element and be supplied to the mixture.
- the cleaning agent may be provided in the foaming device or may already be supplied in mixed form.
- foaming element generates a dynamic pressure in the flow channel, so that turbulence occurs when the cleaning agent passes through the foaming section, leading to foam formation.
- the nozzle body is provided with the beam-shaping element in the generic foam-generating device.
- the cleaning foam can be dispensed as a flat jet, which is arranged substantially in one plane and in particular spreads in a fan-shaped manner.
- a foam-producing device of the type mentioned in the introduction is described in EP 1 852 190 B1.
- the foaming element used is, for example, a perforated plate, a sieve, pressed steel wool or an open-pored metal foam.
- the passage openings or even pores of the foaming section must be so small that a large back pressure is created upstream of the foaming section. This results in foaming upstream of the frothing member, and foam may undesirably leak laterally from the foam generator.
- the passage openings must therefore be so large that this lateral leakage of foam can be avoided.
- downstream of the foaming section cleaning foam having a relatively large bubble size is formed. This less stable cleaning foam breaks down faster and has a lower cleaning effect.
- the beam profile of the flat jet is affected by the larger air bubbles in the foam.
- the object of the present invention is to provide a generic foaming device with which a cleaning foam with a better cleaning effect can be produced.
- This object is achieved according to the invention in a foaming device of the type mentioned in that the foaming device comprises a sieve having a sieve section arranged in the flow channel, that the sieve section downstream of the foaming and at a distance from and upstream of the beam-forming element is arranged and that the sieve section Through openings which are smaller than the passage openings of the foaming section.
- a dynamic pressure can be generated by using the frothing element in the flow channel, and when passing through the frothing section, the cleaning agent is foamed.
- the foamed cleaning agent is foamed.
- screen section air bubbles in the cleaning foam can be reduced. This is made possible by the passage openings of the screen section being smaller than those of the foaming section, in particular having a smaller cross section than the latter.
- the reduction of the bubbles leads to an increase in the volume and to a solidification of the foam, so that this can have a high dimensional stability downstream of the screen section. Due to the high dimensional stability, a flat jet with good beam profile can be generated with the beam-shaping element.
- a jet having a good jet profile and cleaning foam having a high cleaning effect can thereby be produced.
- the screening element in addition to the foaming element, unlike the foam-producing device described in EP 1 852 190 B1, it is not necessary to produce a dimensionally stable cleaning foam when the cleaning agent passes through alone with the foaming element. Rather, this can be ensured in a second step by the presence of the sieve element. A damming or "kickback" of solid, dimensionally stable cleaning foam against the flow direction through the foaming through and optionally upstream of the AufMumabiteses arranged air inlet openings can be largely avoided, as shown in practice.
- the mean distance of the wire section from the foaming section is approximately 15% to 35% of the diameter of the wire section, based on a circular configuration of the wire section.
- the average distance is about 25% of the diameter of the wire section.
- the cross section of the through-openings of the foaming-up section is approximately four times to eight times as large as the cross section of the through-openings of the screen section, preferably approximately five to six times as large.
- the diameter of the through holes of the AufMumabiteses about 1 millimeter to 1.5 millimeters, for example, 1.2 millimeters.
- the diameter of the passage openings of the screen section may be, for example, about 0.3 to 0.7 millimeters, for example 0.5 millimeters.
- the number of through holes of the wire section is about five times to ten times as high as the number of through holes of the foaming section.
- the passage openings of the foaming and / or the screen section can be aligned around and / or parallel to each other.
- the passage openings of the foaming and / or the Siebabiteses are axial aligned, longitudinally or parallel to an axis defined by the foam generating device, along which the flow channel extends.
- the foaming section and / or the wire section are designed as perforated plates.
- a foaming space for the cleaning agent is preferably formed, in which the cleaning agent passing through the foaming section can be foamed.
- At least one wall which limits the foaming space transversely to the flow direction of the cleaning agent.
- this can be understood in particular to mean that the foaming space is delimited along the flow channel by the foaming section and by the sieve section and in the circumferential direction by the at least one wall. Due to the limitation by the at least one wall, it can be avoided that foam escapes from the foaming space, bypassing the sieve section. Instead, the foam is allowed to pass through the wire section as intended.
- the foaming element and / or the sieve element comprise or form the at least one wall.
- a structurally simple embodiment can be achieved.
- the foaming element or the sieve element interlock and each comprise or form a wall, the walls abutting one another in the circumferential direction of the foaming space.
- the AufJumraum can be limited by a double-walled.
- the foaming space can be reliably sealed transversely to the direction of flow.
- foam undesirably escapes from the foaming chamber, bypassing the sieve section.
- the foaming section and / or the sieve section have a central opening-free area which is free of passage openings and which is surrounded by passage openings.
- central refers to an arrangement of the opening-free region in the middle or essentially in the middle of the flow channel.
- the passage of the cleaning agent and of the foam through the foaming section and / or the sieve section is displaced in the direction of a wall of the flow channel.
- the amount of centrally flowing through the flow channel detergent and foam is thereby reduced. This proves to be advantageous for the shaping of the flat jet by the beam-shaping element. As a result, a better steel profile can be provided thereby.
- the opening-free region at the foaming section is, for example, approximately 30% of its diameter and approximately 5% to 15% of its diameter on the wire section, in each case based on a circular configuration of the foaming section or the sieve section.
- the foaming section has a central projecting area projecting in the direction of the screen section and / or if the screen section has a central projecting area projecting in the direction of the foaming section.
- the protrusion area similar to the opening-free area, allows the passage of detergent and foam through the frothing section and the screen section to be displaced toward a wall of the flow channel. This is advantageous for the formation of the flat jet with the beam-shaping element.
- the respective projecting region can be, for example, in the form of a pin, a cone or a socke-shaped one.
- the foaming section and / or the screen section may have a curvature or curvature in the direction of flow of the cleaning agent.
- the curvature or curvature is, for example, calotte-shaped, in particular spherical cap-shaped, or cone-shaped.
- the cross-section of the flow channel tapers continuously downstream of the wire section in the direction of the beam-shaping element. This proves to be favorable in order to form a flat beam with a good profile with the beam-shaping element.
- the foaming element and the sieve element are preferably formed separately from one another and connected to one another. This facilitates on the one hand the mounting of the foam generating device.
- the foaming element and the sieve element can be provided, for example, connected together as a preassembled structural unit and inserted into the flow channel. On the other hand, a relative movement of the foaming and the sieve element can be avoided and their relative position can be maintained by arrangement in the flow channel. This is advantageous for providing a foam of timeless quality.
- the foaming element and the sieve element are connected to one another, for example, by latching, wherein additionally or alternatively, jamming is also possible.
- the foaming and the sieve element have cooperating latching elements which form a latching device.
- latching projection is provided, which engages in a corresponding latching receptacle.
- the latching projection is for example a bead which engages in a corresponding receptacle in the form of a groove.
- the foaming element and the sieve element each have a wall facing the wall of the flow channel and if the foaming element and the sieve element at the edges, preferential wise along the entire edges, are interconnected.
- the connection on the edge, preferably along the entire edge and preferably immediately adjacent to the wall of the flow channel, makes it possible to design the passable from the detergent free cross section of the foaming element and the screen element as large as possible.
- the foaming element and the sieve element can each be formed separately from the flow channel and inserted into it.
- the foaming element and / or the sieve element inserted into the flow channel insertion elements which are supported against a stop on the flow channel against the flow direction of the cleaning agent.
- the stop is for example a shoulder, in particular an annular shoulder, on a wall of the flow channel, on which the sieve element and / or the foaming element can rest.
- At least one clamping element is arranged on the foaming element and / or on the screen element for clamping with a wall of the flow channel.
- the foaming element and / or the sieve element can be clamped in the flow channel (also in the connected state).
- an interference fit for the frothing element and / or the sieve element can be ensured via the clamping element, thereby ensuring a reliable seat and a defined relative position to the flow channel even with fluctuating fluid pressures.
- the foaming and / or the sieve element are clamped in the nozzle body, which can form a portion of the flow channel.
- the at least one clamping element is preferably arranged along an entire wall of the flow channel facing the edge of the foaming element and / or the screen element and clamped to the wall. This enables, on the one hand, reliable retention of the foaming element and / or of the sieve element. On the other hand, the at least one clamping element can form a sealing element. As a result, it can be avoided that cleaning agent or foam flows laterally past the foaming section and / or on the screen section through the flow channel.
- the foaming element and / or the sieve element is designed in one piece, in particular as a plastic molded part. This allows a cost-effective and structurally simple production of the foaming and / or the sieve element.
- the foam generating device conveniently defines an axis about which the nozzle body is rotatable. Thereby, the plane of the flat jet can be rotated, whereby the foam generating device is more versatile.
- the foaming element and the sieve element are preferably held against rotation on the nozzle body so that they can be rotated together with the latter during its rotation.
- At least one inlet opening for air, which is admixable with the cleaning agent, is formed on the flow channel upstream of the foaming element.
- the flow channel upstream of the frothing element expediently comprises a nozzle arrangement with which the cleaning agent in the flow channel can be accelerated and forms a storage space immediately upstream of the frothing element, the flow channel continuously expanding in the stowage space in the direction of the frothing element.
- the nozzle assembly has a tapered portion in which the cleaning agent is accelerated.
- the storage space which widens continuously in the direction of the following foaming element immediately downstream of the flow, can adjoin the section.
- the cleaning agent hits the foaming agent at high pressure. element, which can be acted upon by the expansion of a relatively large area of the foaming element with foaming.
- the nozzle arrangement is preferably arranged downstream of an injector of the foam-generating device, with which a cleaning chemical of the carrier liquid can be added.
- the foam generating device may comprise a connection device for connecting a detergent container and an admixing device, via which a cleaning chemical from the detergent container can be sucked in and a carrier liquid can be mixed in the flow channel. Conveniently, an adjustment is provided, with which the amount of blended cleaning chemical can be adjusted. As already mentioned, in particular water is used as the carrier liquid.
- the admixing device preferably allows homogeneous mixing of the carrier liquid and the cleaning chemical. Downstream of the mixing device, the above-mentioned nozzle arrangement may be arranged on the flow channel or form part of it. Furthermore, downstream of the mixing device, at least one inlet opening for air can be formed for mixing into the cleaning agent at the flow channel.
- the admixing device preferably comprises a venturi injector.
- the foam generating device comprises a connecting device for connecting to a high-pressure gun or a jet pipe of a high-pressure cleaning device.
- FIG. 1 shows a perspective view of a foam-producing device according to the invention and of a detergent container connected to it;
- Figure 2 is a longitudinal sectional view (partial view) of the cleaning device of Figure 1 along the line 2-2 in Figure 1;
- FIG. 3 is an enlarged view of a detail of FIG. 2;
- Figure 4 is an enlarged view of detail A in Figure 3;
- FIG. 5 shows a first perspective exploded view of a foaming element and a sieve element of the foam-producing device from FIG. 1 and FIG. 5
- Figure 6 a second perspective view of the foaming element and the screen element.
- FIG. 1 shows a perspective illustration of a preferred embodiment of a foam generating device, generally designated by the reference numeral 10, and a detergent container 12 connected to it.
- the foam-producing device 10 has a main body 14, designed as a jet pipe 16.
- a flow channel 18 is formed through which a fluid can flow.
- a connecting device 20 is arranged on the base body 14.
- the foam-generating device 10 can be connected to a not shown in the drawing high-pressure cleaning device, as the accessories it can be used.
- the foam-generating device 10 is connected to a blasting gun or to a jet pipe of the high-pressure cleaning device. From the high pressure cleaning device can the foam-generating device 10, a cleaning carrier liquid are provided, in this case in particular water.
- the foam-generating device 10 has an admixing device 22, via which a cleaning chemical from the detergent container 12 can be added to the carrier liquid.
- the mixing device 22 comprises a known per se and not shown in detail in the drawing Venturi injector 24 which is arranged in the flow channel 18. About the venturi injector 24, the cleaning chemical can be sucked by means of a present tubular suction line 26 from the detergent container 12 and mixed with the carrier liquid.
- the mixture is referred to below as a cleaning agent and is preferably homogeneous.
- the foam-generating device 10 has a connection device 28, which in the present case is integrally formed on the jet pipe 16.
- the detergent container 12 can be detachably connected, in particular manually and without tools.
- the foam-generating device 10 Downstream of the mixing device 22, the foam-generating device 10 comprises a nozzle body 30.
- the nozzle body 30 surrounds the jet pipe 16 on its side facing the mixing device 22. Furthermore, the nozzle body 30 forms an end of the foam-generating device 10 opposite the connecting device 20.
- the nozzle body 30 comprises a beam-shaping element 32, which forms an outlet opening 34.
- the beam-shaping element 32 is shaped so that the outlet opening 34 has an approximately lenticular shape in plan view. Accordingly, the beam-shaping element 32 is approximately provided with the shape of opened lips.
- a flat jet of the cleaning agent can be dispensed from the nozzle body 30, in which case the cleaning agent is arranged essentially in one plane and spreads in a fan-shaped manner in particular.
- the cleaning agent is foamed in the flow channel 18 in a manner which will be explained below.
- the foam generator 10 defines an axis 36 along which the flow channel 18 extends.
- the nozzle body 30 is rotatably supported on the jet pipe 16 about the axis 36. As a result, the plane of the flat jet can be rotated.
- the nozzle body 30 Preceding the beam-shaping element 32, the nozzle body 30 forms a section 38 of the flow channel 18.
- the section 38 comprises a wall of the flow channel 18, with a wall 40.
- the beam shaping element 32 upstream upstream forms the wall 40 a stop 42 which is opposite to the flow direction of the cleaning agent through the flow channel 18 acts.
- the stop 42 is configured as an annular shoulder 44 in the circumferential direction of the axis 36.
- the flow direction of the cleaning agent is symbolized by an arrow 46 in the drawing.
- the flow channel 18 is formed by a nozzle arrangement 48 except for the jet pipe 16 and the nozzle body 30.
- the nozzle assembly 48 is placed on the side facing the portion 38 on the jet pipe 16 and fluid-tightly connected thereto.
- the nozzle arrangement 48 in turn is surrounded on the outside by the nozzle body 30, wherein a gap 50 is formed between the nozzle body 30 and the nozzle arrangement 48.
- FIG. 2 shows two inlet openings 54 illustrated by dashed lines. Admitted between an outer wall 56 of the nozzle body in the region of the section 38 and the wall 40 are inlet openings 58 on the nozzle body 30 (illustrated by dashed lines in FIG. Through the inlet openings 58, air can be supplied to the intermediate space 50 and via this to the flow channel 18. For sucking in the air, it is advantageous that the flow channel 18 tapers upstream of the end section 52. As a result, a defined point jet of the cleaning agent can be generated, which causes the air intake on entering the nozzle arrangement 48.
- the nozzle assembly 48 includes the end portion 52 in the flow direction 46 downstream of a tapered portion 60 and a subsequent section 62 of constant cross-section. In section 62, the cross section of the nozzle assembly 48 is minimal. The section 62 is followed by an expanding section 64 in the flow direction 46. The section 64 expands continuously in the flow direction 46 and encloses a section of the flow channel 18 designated below as a storage space 66.
- the cleaning agent is accelerated through the nozzle assembly 48 and relaxes in the storage space 66, wherein it encounters an increase in pressure on a AufMumelement 68, which is arranged in the flow channel 18. Downstream of the frothing element 68 in the flow direction 46 is a screen element 70, which is likewise arranged in the flow channel 18.
- the frothing element 68 has a frothing section 72, which is arranged transversely to the flow direction 46 in the flow channel 18 and is configured as a perforated plate 74.
- the perforated plate 74 has on the outside an edge 76 which faces the wall 40.
- the perforated plate 74 has a curvature in the flow direction 46, essentially the shape of a section of a spherical cap. At a central region 78, the frothing section 72 is further downstream. The central region 78 comprises approximately 30% of the diameter of the round foaming section 72.
- a projection area 80 is arranged on the central area 78.
- the contour of the perforated plate 74 deviates from the spherical cap.
- the projecting area 80 is socke-shaped, approximately disk-shaped and directed onto the screen element 70.
- the central region 78 is surrounded by a multiplicity of passage openings 82 of the foaming section 72.
- the passage openings 82 are round and designed, for example, as bores of the foaming section 72. They extend parallel to the axis 36. Overall, there are approximately 30 through-holes 82 which surround the central region 78 in two rows. The diameter of the through holes 82 is about 1 millimeter to 1.5 millimeters, for example, 1.2 millimeters.
- the rim 76 has an edge portion 84 which faces the portion 64 of the nozzle assembly 48.
- the edge portion 84 is annular, extending around the axis 36 along the entire circumference.
- the edge portion 84 forms a clamping element 86, via which the foaming element 68 can be fixed in the flow channel 18 in a clamping manner.
- the clamping element 86 is clamped to the wall 40.
- the clamping element 86 is configured deformable and has an oversize (symbolized in Figure 4 by a dashed contour 88) with respect to the diameter of the flow channel 18. If the foaming element 68 is inserted into the flow channel 18 during assembly, the clamping element 86 deforms and is clamped to the wall 40 via a press fit. As a result, a particularly reliable fixation of the foaming element 68 is achieved.
- the edge portion 84 also forms a sealing element.
- the sealing element ensures that cleaning agent is not on the side of the Foaming element 68 passes through the flow channel 18, but only through the foaming section 72 therethrough.
- the edge 76 comprises an edge portion 90.
- the edge portion 90 is radially inwardly disposed with respect to the edge portion 84 and sleeve-shaped, wherein it extends around the axis 36 along the entire circumference.
- a receptacle 92 is disposed at the edge 76 between the edge portions 84 and 90.
- the receptacle 92 is a latching receptacle and in the present case designed as an annular groove 94, which is arranged along the entire outer circumference of the frothing element 68.
- the sieve element 70 comprises a sieve section 96 arranged in the flow channel 18.
- the sieve section 96 is aligned transversely to the flow direction 46 and designed as a perforated plate 97.
- the screen section 96 has a curvature, approximately in the form of a conical jacket.
- the sieve section 96 is surrounded on the outside by an edge 98 of the sieve element 70.
- a central region 100 is arranged. At the central region 100, the strainer section 96 is free of passage openings. The central region extends over approximately 10% to 15% of the diameter of the round mesh section 96.
- a plurality of through holes 102 surround the central region 100. The through holes 102, for example bores, are aligned parallel to one another and parallel to the axis 36.
- the passage openings 102 have a diameter of approximately 0.3 millimeters to 0.7 millimeters and, for example, approximately 0.5 millimeters. Overall, in the present case about 200 to 250 through holes 102 are present. Thus, the number of through holes 102 exceeds that of the through holes 82 considerably.
- the passage openings 102 are also smaller than the passage openings 82, in the present case considerably smaller, the cross section being approximately one fifth to one sixth of that of the passage openings 82.
- a projection region 103 is arranged on the central region 100.
- the screen section 96 comprises a pin-shaped projection in the direction of the foaming section 72. The projection is aligned coaxially with the projection area 80.
- the edge 98 forms a support element 104, via which the sieve element 70 can be supported on the annular shoulder 44 against the flow of the cleaning agent.
- the edge 98 comprises an edge portion 106 on the wall 40 facing side.
- the edge portion 106 is sleeve-shaped and closed in the circumferential direction of the axis 36.
- the edge portion 106 is disposed radially outside of the edge portion 90 and is applied to this.
- the edge section 106 has a projection 108.
- the projection 108 forms a latching element in the form of a bead 110.
- the bead 110 extends along the entire circumference of the edge section 106.
- the bead 110 may cooperate with and engage the annular groove 94. This makes it possible to connect the sieve element 70 and the foaming element 68 together and in particular to lock together. This facilitates the assembly.
- the frothing element 68 and the sieve element 70 can be provided separately from one another, in particular as plastic molded parts, and inserted in the interconnected state into the flow channel 18 and in particular the nozzle body 30. Contrary to the flow direction 46, they can be supported on the annular shoulder 44 and additionally fixed by the interference fit of the clamping element 86 with the wall 40.
- a foaming space 112 is formed between the foaming section 72 and the sieve section 96, since the foaming section 72 and the sieve section 96 are spaced apart along the axis 36.
- the foaming space 112 is characterized by a double limited wall, wherein the edge portion 90 of the foaming element 68 and the edge portion 106 of the screen element 70 each form a wall of the double wall.
- the double wall formed from the edge portions 90 and 106 makes it possible to seal the foaming space 112 in the circumferential direction so that substantially no cleaning agent flows laterally past the sieve portion 96 between the sieve element 70 and the wall 40.
- the mixture of carrier liquid (in particular water), cleaning chemistry and air (foamable cleaning agent) is accelerated by the nozzle arrangement 48 and expands in the storage space 66. Due to the frothing element 68 upstream of the frothing section 72, a comparatively large amount is formed back pressure. In this case, air bubbles in the detergent can be reduced. Under the effect of the flow, the cleaning agent passes through the foaming section 72 at the through-holes 82. There are turbulences, which lead to foaming of the detergent in AufDumraum 112.
- the cleaning agent is further foamed. Due to the smaller cross section of the passage openings 102 with respect to the passage openings 82, air bubbles present in the foam are reduced, which leads to a further foaming of the cleaning agent.
- a dimensionally stable, solid cleaning foam with which a very good cleaning effect can be achieved.
- the nature of the cleaning foam and its dimensional stability also make it possible, in particular, to form a flat jet with a good beam profile with the beam-shaping element 32.
- the good beam profile favors the cleaning effect that can be achieved by the cleaning foam delivered with the foam-generating device 10. It proves to be advantageous for the jet profile that the foaming section 72 has the central region 78 free of passage openings 82 and the sieve section 96 the central region 100 free of passage openings 102.
- the cleaning agent passes through the foaming section 72 and the Siebabschnit7 96 not centrally, but radially outside
- the projecting portion 80 and the projecting portion 103 are arranged in the AufMumraum 112 of the respective central regions 78, 100 and, consequently, on the walls 40 of the foaming section ,
- the formation of a so-called "free jet", substantially centered about the axis 36, can be avoided.
- the generation of cleaning foam takes place in two stages in the foam-generating device 10, namely by the frothing element 68 and the downstream sieve element 70.
- the dimensionally stable cleaning foam can be provided with very small bubbles without the risk of a "backflow Foam in the nozzle body 48 takes place in such a way that the foam escapes undesirably from the flow channel 18 through the inlet opening 54.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Food-Manufacturing Devices (AREA)
- Nozzles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2013/061842 WO2014194967A1 (de) | 2013-06-07 | 2013-06-07 | Schaumerzeugungsvorrichtung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3003541A1 true EP3003541A1 (de) | 2016-04-13 |
| EP3003541B1 EP3003541B1 (de) | 2019-04-03 |
Family
ID=48577091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13727228.2A Active EP3003541B1 (de) | 2013-06-07 | 2013-06-07 | Schaumerzeugungsvorrichtung |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3003541B1 (de) |
| WO (1) | WO2014194967A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2820287T3 (es) * | 2017-10-19 | 2021-04-20 | Anoxia B V | Un método para realizar un procedimiento en un animal que implica el aturdimiento y/o la eutanasia de dicho animal |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2492037A (en) * | 1945-05-08 | 1949-12-20 | Rockwood Sprinkler Co | Apparatus for generating foam |
| US3388868A (en) * | 1965-10-29 | 1968-06-18 | Nalco Chemical Co | Foam producing nozzle |
| SU958105A1 (ru) * | 1980-12-05 | 1982-09-15 | Государственный Научно-Исследовательский Институт Строительных Материалов И Изделий | Устройство дл приготовлени технической пены |
| DE202006007314U1 (de) | 2006-05-05 | 2006-07-20 | Suttner Gmbh | Schaumeinrichtung |
| CN102655912A (zh) * | 2009-12-18 | 2012-09-05 | 宝洁公司 | 泡沫毛发着色剂组合物 |
| DE202010002089U1 (de) * | 2010-02-09 | 2010-06-24 | Mei Thung Co., Ltd., Wuri Township | Schaumerzeuger |
| DE202011050649U1 (de) * | 2011-07-07 | 2011-10-24 | Wu-Chiao Chou | Schaumerzeuger |
-
2013
- 2013-06-07 EP EP13727228.2A patent/EP3003541B1/de active Active
- 2013-06-07 WO PCT/EP2013/061842 patent/WO2014194967A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2014194967A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3003541B1 (de) | 2019-04-03 |
| WO2014194967A1 (de) | 2014-12-11 |
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