EP3651885A1 - Dispositif de production de mousse pour un dispositif de traitement de véhicule - Google Patents

Dispositif de production de mousse pour un dispositif de traitement de véhicule

Info

Publication number
EP3651885A1
EP3651885A1 EP18728106.8A EP18728106A EP3651885A1 EP 3651885 A1 EP3651885 A1 EP 3651885A1 EP 18728106 A EP18728106 A EP 18728106A EP 3651885 A1 EP3651885 A1 EP 3651885A1
Authority
EP
European Patent Office
Prior art keywords
bed
foam
retaining means
generating device
chamber
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
Application number
EP18728106.8A
Other languages
German (de)
English (en)
Other versions
EP3651885B1 (fr
Inventor
Andreas Sattler
Stefan Mayer
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.)
Washtec Holding GmbH
Original Assignee
Washtec Holding GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Washtec Holding GmbH filed Critical Washtec Holding GmbH
Publication of EP3651885A1 publication Critical patent/EP3651885A1/fr
Application granted granted Critical
Publication of EP3651885B1 publication Critical patent/EP3651885B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B01F25/40—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
    • B01F25/4524—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 foam-like inserts or through a bed of loose bodies, e.g. balls
    • B01F25/45241—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 foam-like inserts or through a bed of loose bodies, e.g. balls through a bed of balls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2215/00—Auxiliary or complementary information in relation with mixing
    • B01F2215/04—Technical information in relation with mixing
    • B01F2215/0413—Numerical information
    • B01F2215/0418—Geometrical information
    • B01F2215/0431—Numerical size values, e.g. diameter of a hole or conduit, area, volume, length, width, or ratios thereof

Definitions

  • the invention relates to a foam generating device, also as
  • Foam generator or foam reactor in particular for a
  • a vehicle treatment device comprising a foam generating chamber, which may be formed as a cylindrical or prismatic hollow body and which is filled with a fluid-permeable bed of loose particles and at least one inlet for supplying a liquid and a gas and an outlet for discharging the generated in the foam-generating chamber Foam has.
  • foamable liquid is typically a detergent diluted with tap water or dissolved in tap water
  • Detergent contains.
  • the document WO 2017/041781 A1 shows a foam generator with a foam generation chamber which has an inlet for water, surfactant and gas and an outlet for foam and contains a fluid-permeable bed of loose particles.
  • a basic idea of the invention is therefore to provide a foam generator from the filling material of which lime particles which are carried with the liquid component of the mixture into the filling material can not store on or in the gaps of the filling material, in particular can be discharged again.
  • the foam generation device or the (cylindrical or prismatic) foam generation chamber has a fluid-permeable first
  • Retaining means dividing the foam generating chamber into an upstream (or lower vertical orientation), first (cylindrical) chamber section, and a downstream (or upper vertical orientation) filled with the second (cylindrical) chamber section.
  • the first retaining means prevents the bed from entering the upstream first chamber section.
  • a retaining means a sieve or a
  • the retaining means for example, a grid floor, in the form of a grid with substantially mutually parallel struts or bars or in the form of a grid floor with intersecting bars or be formed in the form of a screen.
  • a grid floor in the form of a grid with substantially mutually parallel struts or bars or in the form of a grid floor with intersecting bars or be formed in the form of a screen.
  • a cross brace by intersecting bars provides more stability, which is especially true at
  • heavyweight filling material and / or high water columns is advantageous.
  • the distances between adjacent struts of the retaining means are smaller than a particle diameter of the bed, preferably smaller than the smallest particle diameter of the bed, and larger than a pore size or a pore diameter of the bed, preferably larger than the average
  • Pore diameter of the bed and more preferably greater than the largest pore diameter of the bed.
  • Retention means less than the mean particle diameter of the bed, preferably less than the smallest particle diameter of the bed.
  • the width of the struts of the retaining means is less than the average pore size or the average pore diameter of the bed, preferably less than the smallest pore size or the smallest pore diameter of the bed. More preferably, the struts (each strut) of the retaining means are at most half as wide as the mean pore size or the average pore diameter of the bed, preferably half as wide as the smallest pore size or the smallest pore diameter of the bed.
  • the widest dimension across the entire length of the strut in the area in which strut is located below the particle bed in particular, the widest dimension across the entire length of the strut in the area in which strut is located below the particle bed.
  • the struts have a round cross-section.
  • a retaining element for the filling material is arranged, which is permeable to lime particles and ensures their separation from the filling material.
  • the retention means ideally has the smallest possible support surface for lime particles.
  • Chamber portion is arranged, it is ensured that the lime particles completely or over the entire cross section in the first chamber section (same
  • Diameter can fall or fall, and thus form any limescale deposits on a shoulder, step, narrowing or narrowing of the second chamber section and can connect or bake from there the particles of the bed.
  • downstream of the second chamber portion is a second fluid-permeable, preferably similar or identical, to the first retention means
  • Retention means is provided which limits an expansion of the bed.
  • Foam outlet opening can be distended, not from the
  • Foam generating chamber out or can be flowed out.
  • Foam generating chamber the maximum degree of expansion of the bed will be determined.
  • the filler contains a bed of balls, in particular balls of equal size, or consists of these.
  • the diameter of the balls is particularly preferably between 1, 25 mm and 1, 65 mm, exceptionally preferably 1, 45 mm. It is also conceivable, for coarser foams balls with larger
  • the pore size can be calculated, for example, analogous to the octahedral gap and is always a function of the diameter of the balls used in the bed.
  • the largest achievable pore size corresponds to the octahedral gap in a cubic face-centered lattice (automotive lattice).
  • the influence on the pore size also has in particular the cross-sectional geometry of the bed, i. the edges of the bed, which can not be included in the octahedron model.
  • the pore diameter can never be greater than the diameter of the balls in the bed.
  • the porosity of a ball bed is known from the literature and is approximately 43% in the loose bulk state and in the konnpakt elected state (this is
  • the distance between the particles can be controlled via the ball diameter, which corresponds to the pore size or the pore diameter or the channel width of the bed.
  • the balls are made of glass. Glass is advantageous in that it is an inert material and thus does not undergo any interaction with the surrounding medium. In addition, due to the smooth surface texture of the Glases no smaller particles from the foaming mixture on the surface of the balls attach.
  • the first retaining means in particular via a
  • Attaching bars it is advantageous to be able to remove the retaining means for cleaning or to be able to replace it with a new one.
  • the first chamber section is preferably the
  • Foam generating device in particular via a separation point, releasably and / or interchangeably connected.
  • the foam generating device may be modular, so that the lower section can be removed and cleaned or replaced if necessary by a new one.
  • a drain is provided in the first chamber section at a location upstream of the inlet.
  • a liquid such as water.
  • the process can be designed as a sump or just be arranged to the bottom surface of the foam generating device, so that no step between the bottom surface and the drain is created, which can be prevented that form residues that can not be flushed out.
  • the bottom surface has a slight inclination and the drain is arranged at the lowest point or at the lowest edge of the bottom surface. This facilitates the rinsing and drainage of lime particles in the cleaning of the
  • Chamber section arranged an overflow. This advantageously allows, in the Fill material existing, for example, stuck during the expiration process, lime particles to the upper end of the bed out beyond the bed
  • an optionally disclosed overflow is provided in the flow direction between the second retaining means and the drain. This advantageously allows lime particles to be carried over the fill in the direction of flow and removed from the foam generator by the overflow.
  • the overflow is lockable, so in the
  • Foaming Mode The foam does not get into the overflow.
  • Fig. 1 is a schematic representation of an inventive
  • Fig. 2 is a schematic representation of a retaining means according to a first embodiment
  • Fig. 3 is a schematic representation of a retaining means according to a second embodiment
  • Fig. 4 is a schematic representation of an inventive
  • Fig. 5 is a schematic representation of an inventive
  • FIG. 1 shows a schematic representation of a foam generation device 1 in a first exemplary embodiment.
  • the foam generating device 1 has a foam generating chamber 2 having a first chamber portion 2 a and a second chamber portion 2 b separated from each other by a first retaining means 4.
  • a filling material in the form of a bed 3 of equal size balls is provided in the foam-generating chamber.
  • a first retaining means 4 is provided in the form of a grid floor, which supports the balls of the bed 3.
  • a feed 5 for a foamable liquid is provided, which usually consists of water, for example tap water, and a foamable detergent.
  • a foamable liquid which usually consists of water, for example tap water, and a foamable detergent.
  • Foam generating device 1 a feed device 6 is provided, via which a gas, for example air or compressed air, is introduced into the foam generating device 1. It is also conceivable that liquid and gas outside the foam generating device 1.
  • Foam generating device 1 combined and already pre-mixed via a common feed line into the foam generating device 1 are fed.
  • Foam generating device 1 mixed and under pressure
  • a pump vertically guided in the direction of a downstream or above the bed 3 arranged outlet 7 in the form of a foam outlet opening.
  • mixture foamable mixture of foamable liquid and gas
  • the bed 3 wherein the mixture is sheared when flowing through the pores of the bed 3 and forms foam bubbles.
  • Downstream or vertically above the bed 3 may be a second
  • Retaining means 8 are located, which limits buoyancy of the balls from the bed 3. It can be determined by the height position of the second retaining means 8 in the Foam generating chamber 2 are determined how far the bed 3 can expand when flowing through the mixture or how compact the bed 3 is to be held when flowing through the mixture.
  • the outlet 7 At the upper portion of the foam-generating chamber 2 (in the second chamber section 2b) is the outlet 7, from which the foam formed during the passage of the bed 3 leaves the foam-generating device 1. After the end of foaming /
  • a separation point 9 at which the first chamber section 2a of the foam generation chamber 2 can be separated from the second chamber section 2b of the foam generation chamber 2. This is particularly advantageous for the cleaning (of calcium deposits) of the first chamber section 2a.
  • An exemplary embodiment of such a separation point 9 is a
  • Detergent (foamable liquid / foam generating agent) is mixed and fed into the foam generator 1.
  • tap water carries lime particles whose concentration may vary depending on the degree of water hardness.
  • An alkaline agent also destabilizes the lime contained in the tap water, so that it crystallizes in the stationary water mixture (after interrupting the flow / shutdown of the pump).
  • these lime particles especially if the
  • Grid bars of the first retaining means 4 selected so that the balls of the bed 3 are retained and existing lime particles can fall through the distances between the bars through or can fall. Accumulating / caused by destabilization lime particles can thus fall after interrupting the flow / after switching off the pump in the stagnant water of the bed 3 and fall or fall to the bottom of the foam generating device. 1
  • the outer dimensions of the first retaining means 4 at least cover or exceed the outer dimensions of the bed 3 so that all descending lime particles, in particular at the edges of the bed 3, can be separated from the bed 3 via the first retaining means 4.
  • the grid bars may in principle have different cross sections, with a round cross section being particularly advantageous in order to minimize the bearing area for lime particles. Possibly in the bed 3 remaining lime particles can in the next flow through the bed 3 in the flow direction for
  • the second retaining means 8 is of the same or similar construction as that of the first retaining means 4, so that balls from the bed 3 are retained by the second retaining means 8, but lime particles flowing up may pass the second retaining means 8.
  • Fig. 2 shows a schematic structure of a first retaining means 4 in the form of a grid floor in a first embodiment.
  • the bars do not cross each other and are arranged substantially parallel. Thus, the contact surface for lime particles is reduced to a minimum.
  • Fig. 3 is a second
  • Embodiment of a first retaining means 4 shown schematically in the form of a grid floor.
  • the bars extend crosswise, which gives the grid floor more stability.
  • Fig. 4 shows a schematic structure of an inventive
  • Foam generating device 1 in a second embodiment.
  • the second embodiment is similar in basic construction to the first embodiment, so that only differences will be discussed below. Notwithstanding the first
  • Foaming chamber 2 below the first retaining means 4 a conical narrowing or a sump, so that the flow cross-section after
  • Fig. 5 shows a schematic structure of an inventive
  • Foam generating device 1 in a third embodiment.
  • the third embodiment is similar in basic construction to the first embodiment, so that only differences will be discussed below. Notwithstanding the first
  • the bottom of the foam generating device 1 is arranged obliquely, so that an edge region of the bottom (right side in the figure) is lower than the opposite edge region of the bottom (left side in the figure).
  • a drain 10 is arranged at the lower edge region of the bottom.
  • Inflow rate of the liquid is chosen or controlled so that the
  • the first retaining means 4 is not reached.
  • the gas supply is omitted during this rinsing process.
  • the drain 10 is closed, for example via a controllable valve or a lid.
  • Foam generating chamber 2 is provided, to which an overflow 1 1 (left side in the Fig.) Can be connected and which otherwise with a closure means, such as a plug 12, (right side in the Fig.) Is closed. This makes it possible to lime particles that are left in the bed 3, in
  • Foam generating device 1 introduced and the bed 3 is flowed through.
  • the lime particles remaining in the bed 3 are carried along in the flow direction of the liquid, and the foam generating device 1 can be carried along
  • the inflow rate of the liquid is chosen so that the liquid level does not affect the outlet 7 reached.
  • the opening is in the
  • Foam generating chamber 2 to which the overflow 1 1 is connected closed, for example via a plug 12 or cover. It is also conceivable that an overflow 1 1 is permanently connected to the foam-generating chamber 2, and is closed during foam generation by a valve or other controllable closure means.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

L'invention concerne un dispositif de production de mousse (1), en particulier pour un dispositif de traitement de véhicule. Le dispositif est pourvu d'une chambre de production de mousse (2) qui est remplie d'un tas (3) de particules libres perméables aux fluides et qui présente au moins une arrivée (5, 6) pour l'amenée d'un liquide et d'un gaz ainsi qu'une sortie (7) pour l'évacuation de la mousse produite dans la chambre de production de mousse. Selon l'invention, la chambre de production de mousse (2) est divisée par un premier moyen de retenue (4) perméable aux fluides en une première partie amont (2a) et en une deuxième partie aval (2b) remplie du tas (3), le premier moyen de retenue (4) empêchant que le tas (3) parvienne dans la première partie amont (2a) de la chambre.
EP18728106.8A 2017-07-12 2018-05-28 Dispositif de traitement de véhicule Active EP3651885B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017115645.3A DE102017115645A1 (de) 2017-07-12 2017-07-12 Schaumerzeugungseinrichtung für eine Fahrzeugbehandlungseinrichtung
PCT/EP2018/063915 WO2019011513A1 (fr) 2017-07-12 2018-05-28 Dispositif de production de mousse pour un dispositif de traitement de véhicule

Publications (2)

Publication Number Publication Date
EP3651885A1 true EP3651885A1 (fr) 2020-05-20
EP3651885B1 EP3651885B1 (fr) 2021-09-22

Family

ID=62455473

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18728106.8A Active EP3651885B1 (fr) 2017-07-12 2018-05-28 Dispositif de traitement de véhicule

Country Status (4)

Country Link
EP (1) EP3651885B1 (fr)
DE (1) DE102017115645A1 (fr)
ES (1) ES2900167T3 (fr)
WO (1) WO2019011513A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3124095A1 (fr) * 2021-06-16 2022-12-23 Commissariat A L'energie Atomique Et Aux Energies Alternatives Buse de projection d’une mousse
FR3124097A1 (fr) * 2021-06-16 2022-12-23 Commissariat A L'energie Atomique Et Aux Energies Alternatives Dispositif autonome de generation de mousse viscosee

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8034885U1 (de) * 1980-12-31 1981-04-23 Kränzle, Josef, 7918 Illertissen Schaumerzeugungskopf
DE3328530A1 (de) * 1983-08-06 1985-02-21 Mathias 4815 Schloss Holte Mitter Schaumgenerator
IE880496L (en) * 1988-02-24 1989-08-24 Pandion Haliaetus Ltd Silver S Foaming apparatus for car wash.
US20060013062A1 (en) * 2004-07-16 2006-01-19 Henry Gembala Lightweight foam carburetor
DE102015011501A1 (de) 2015-09-09 2017-04-27 Washtec Holding Gmbh Schaumerzeuger

Also Published As

Publication number Publication date
WO2019011513A1 (fr) 2019-01-17
EP3651885B1 (fr) 2021-09-22
ES2900167T3 (es) 2022-03-16
DE102017115645A1 (de) 2019-01-17

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