EP2961569A1 - Dispositif et procédé pour la projection de particules au moyen de particules de gaz congelées - Google Patents

Dispositif et procédé pour la projection de particules au moyen de particules de gaz congelées

Info

Publication number
EP2961569A1
EP2961569A1 EP14713389.6A EP14713389A EP2961569A1 EP 2961569 A1 EP2961569 A1 EP 2961569A1 EP 14713389 A EP14713389 A EP 14713389A EP 2961569 A1 EP2961569 A1 EP 2961569A1
Authority
EP
European Patent Office
Prior art keywords
gas
particles
agglomeration
frozen
gas particles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP14713389.6A
Other languages
German (de)
English (en)
Inventor
Robert Veit
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2961569A1 publication Critical patent/EP2961569A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/003—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods using material which dissolves or changes phase after the treatment, e.g. ice, CO2
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C11/00—Selection of abrasive materials or additives for abrasive blasts
    • B24C11/005—Selection of abrasive materials or additives for abrasive blasts of additives, e.g. anti-corrosive or disinfecting agents in solid, liquid or gaseous form

Definitions

  • a device for particle blasting with frozen particles which holds the blasting medium in liquid form and thus belongs to the group of snow blasters.
  • the device has a nozzle housing which includes an outer and an inner cavity.
  • the inner cavity thereby constitutes an expansion or agglomeration space, which has an inlet connected to the liquefied gas supply for introducing a liquefied gas at its inlet upstream longitudinal end, and has an orifice at its downstream longitudinal end.
  • the mouth opening has a substantially larger cross-section than the inlet.
  • This inner cavity is surrounded at least in the region of its mouth opening by an outer cavity, which is connected to at least one carrier gas supply.
  • An initially tapered acceleration nozzle adjoins the mouth opening of the expansion chamber and the outer cavity in the flow direction, which has a carrier gas inlet located laterally, in particular on all sides of the mouth, as an outlet of the outer cavity.
  • the cross section of the carrier gas inlet is variably adjustable.
  • the metering device may have an inner diameter which is significantly less than an inner diameter of the expansion space, so that the liquefied gas leaving the metering device may expand abruptly, whereby a mixture of frozen gas particles and gas may form.
  • the particle beam device has several relaxation chambers, each having a metering device. A slow flow velocity in the expansion space has an advantageous effect on the amount of the resulting agglomerated frozen gas particles. Increasing the amount of liquefied gas supplied while maintaining the size of the expansion space would increase the flow rate and destroy a higher proportion of gas particles.
  • the agglomeration wheel is arranged adjacent to the connection channel between the expansion space and the flow channel.
  • the agglomeration wheel may be located adjacent to the connection channel and define one side of the connection channel.
  • the Agglomerationsrad can also be arranged in the connecting channel between the expansion space and the flow channel.
  • the agglomeration wheel is arranged with a second agglomeration wheel in the connecting channel between the expansion space and the flow channel.
  • the connection channel can be understood in this case as a connection of the expansion space to the flow channel and on the one hand, the area between the Agglomerationszumn, as well as a flexible hose, which is intended to transport the agglomerated frozen and compressed gas particles to the flow channel.
  • the outlet has an acceleration nozzle.
  • the acceleration nozzle may, for example, be designed as a broad jet nozzle and be designed to accelerate the mixture jet, comprising the agglomerated frozen gas particles and the carrier gas.
  • the relaxation space and the accumulation and compression roller are in this case arranged in a generating device, which is connected via a flexible hose to the accelerating nozzle of the hand-held device.
  • the agglomerated frozen gas particles can be transported solely by the gas fraction formed during the expansion of the liquefied gas, and on the other hand, the transport of the agglomerated frozen gas particles to the accelerating nozzle can be sucked in with a Venturi nozzle in the immediate vicinity of the acceleration nozzle.
  • a liquefied gas for example C0 2 gas
  • C0 2 gas a liquefied gas
  • the metering devices 5 can each be set individually, so that a part of the metering devices 5 can be opened, for example, and a part can be closed.
  • all inlets 4 open into the same reservoir with liquefied gas.
  • each inlet 4 may be connected to a separate liquefied gas reservoir (not shown).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)

Abstract

L'invention concerne un dispositif de projection de particules (11, 11'), et un procédé pour la production d'un jet de mélange de particules congelées, en particules de CO2, et d'un gaz porteur, et pour la production d'un jet de pression, au moyen du jet de mélange de particules de gaz congelées et de gaz porteur. Le dispositif de projection de particules (11, 11') présente un canal d'écoulement (3), une chambre de détente (2), une roue d'agglomération tournante (6), un canal de liaison (12) entre la chambre de détente (2) et le canal d'écoulement (3), et une sortie (8). Le canal d'écoulement (3) présente une entrée (10) pour l'admission d'un gaz porteur. La chambre de détente (2) sert à la production de particules de gaz congelées agglomérées obtenues à partir d'un gaz liquéfié, et présente une entrée (4) pour l'admission du gaz liquéfié. La roue d'agglomération tournante (6) sert à l'agglomération des particules de gaz, et est montée en aval de la chambre de détente (2), et est disposée entre la chambre de détente (2) et le canal d'écoulement (3). La chambre de détente (2) est reliée avec le canal d'écoulement (3), via le canal de liaison (12). La sortie (8) est disposée à une extrémité distale (13) du canal d'écoulement (3), et est réalisée de manière à accélérer un jet de mélange, comprenant les particules de gaz et le gaz porteur.
EP14713389.6A 2013-02-26 2014-02-25 Dispositif et procédé pour la projection de particules au moyen de particules de gaz congelées Withdrawn EP2961569A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013003158 2013-02-26
PCT/EP2014/053662 WO2014131771A1 (fr) 2013-02-26 2014-02-25 Dispositif et procédé pour la projection de particules au moyen de particules de gaz congelées

Publications (1)

Publication Number Publication Date
EP2961569A1 true EP2961569A1 (fr) 2016-01-06

Family

ID=50390047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14713389.6A Withdrawn EP2961569A1 (fr) 2013-02-26 2014-02-25 Dispositif et procédé pour la projection de particules au moyen de particules de gaz congelées

Country Status (2)

Country Link
EP (1) EP2961569A1 (fr)
WO (1) WO2014131771A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3455032B1 (fr) 2016-05-13 2022-05-04 Alfred Kärcher SE & Co. KG Dispositif pour fabriquer des pellets de co2 à partir de neige carbonique et appareil de nettoyage

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5725154A (en) 1995-08-18 1998-03-10 Jackson; David P. Dense fluid spray cleaning method and apparatus
DE19926119C2 (de) 1999-06-08 2001-06-07 Fraunhofer Ges Forschung Strahlwerkzeug
DE20214063U1 (de) 2002-09-11 2003-03-06 Müller, Ulrich, 78664 Eschbronn C02-Kaltgasdüse
DE10243693B3 (de) 2002-09-20 2004-04-01 Jens Werner Kipp Strahlverfahren und-vorrichtung
DE102007018338B4 (de) 2007-04-13 2010-09-23 Technische Universität Berlin Vorrichtung und Verfahren zum Partikelstrahlen mittels gefrorener Gaspartikel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014131771A1 *

Also Published As

Publication number Publication date
WO2014131771A1 (fr) 2014-09-04

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