EP2681009B1 - Méthode et dispositif pour la production d'une mélange de glace et neige sèche comme agent de projection - Google Patents
Méthode et dispositif pour la production d'une mélange de glace et neige sèche comme agent de projection Download PDFInfo
- Publication number
- EP2681009B1 EP2681009B1 EP12707539.8A EP12707539A EP2681009B1 EP 2681009 B1 EP2681009 B1 EP 2681009B1 EP 12707539 A EP12707539 A EP 12707539A EP 2681009 B1 EP2681009 B1 EP 2681009B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ice
- water
- dry ice
- region
- supply
- 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.)
- Active
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Classifications
-
- 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
-
- 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
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
Definitions
- Dry ice is suitable for blasting surfaces that are contaminated or need to be removed from coatings. Regardless of the good abrasive effect of dry ice, which expands considerably during evaporation, this method has the advantage that no residues remain. In particular, in comparison to blasting processes that use sand or glass or other solid blasting particles, it is a considerable advantage that the blasted material does not have to be laboriously cleaned of blasting particles. In particular, when blasting turbine blades and the like, considerable advantages are achieved.
- the conventional blasting devices for blasting dry ice have a comminution device by means of which the supplied dry ice is correspondingly comminuted.
- the crushed dry ice is then applied to the material to be irradiated via a blasting device, in which normally heated air is used as the carrier medium.
- the invention has for its object to provide a method and an apparatus for producing a dry ice / water ice mixture having a high abrasive effect, in particular for irradiating surfaces to be cleaned.
- dry ice is introduced into a mixing area together with water or water ice.
- a mixing of Water and dry ice should be avoided.
- An essential aspect of the method according to the invention and of the device according to the invention is thus that the dry ice and the water or water ice are introduced by means of a device into the cooled mixing area such that the two substances initially do not come into contact.
- the initial contact of the media is avoided according to the invention by a supply in which the dry ice and the water are supplied in parallel in at least substantially the same direction, wherein the feeders are spaced so that an at least initial contact of the media is excluded.
- the feeders for the two media and their arrangement are chosen so that the media does not touch as long as the water is in liquid form.
- a second region of the mixing region which is also cooled and insulated.
- contact surfaces are provided which can be created by contact plates, which come with the ice mixture inevitably in contact.
- These contact surfaces are also cooled and cool the ice mixture, especially the water ice during the contact time further down.
- the second region of the mixing region is formed as a downpipe in which slidably offset protruding contact surfaces are provided, over which the ice mixture slips successively down and during the contact time, as stated, is further cooled. Since the water is already in ice form when entering this second area, it does not lead to freezing of the contact surfaces, but rather the water ice slides as well as the dry ice on the contact surfaces and is, as stated, further cooled down.
- the dry ice is supplied via a slot-like feed opening.
- the water can be supplied via a slot-like nozzle but also on differently shaped nozzles, for example via simple round nozzles, in which case expediently a plurality of nozzles are provided in series or else offset in a row-like arrangement. Essentially, it is important that, as stated, an initial contact of the media is avoided.
- the dry ice is supplied in a known manner in a suitable size, wherein the actual feed may be preceded by a known grinding device by means of which the dry ice is ground to an optimum size.
- the procedure is similar when dry ice and water ice are introduced as media in the mixing area.
- the dry ice is introduced separately from the water ice into the mixing area.
- separate supply openings are provided, which are arranged at a distance from each other, wherein also in this case the supply takes place at least substantially in the same direction, in order to ensure that an initial contact of dry and water ice is avoided.
- a grinding device for the dry ice and possibly also for the water ice can be provided prior to introduction into the mixing area.
- a grinding device for the dry ice and possibly also for the water ice can be provided prior to introduction into the mixing area.
- Such a design will be explained in more detail with reference to a concrete embodiment.
- a range has been proven, which has a first funnel-shaped area, wherein suitably dry ice and water are introduced into this first area so that they fall from the hopper opening by gravity to the hopper outlet.
- the mixing zone is actively cooled and is expediently isolated, the temperature in the mixing zone dropping further due to the introduced dry ice.
- the parameters of the dry ice water supply and cooling are to be adjusted so that, if possible, all introduced water is already frozen before contact with the dry ice or conversions of the mixing zone and then mixed with the dry ice at the funnel outlet.
- a metering device is expediently provided, via which the dry ice / water ice mixture is metered.
- a compressed air device has proven useful in the advantageously heated air is used to transport the ice mixture.
- the ice mixture can then be fed directly to the actual jet device, wherein the preheated air can already represent the carrier medium for the actual blasting process.
- a dry hopper 1 the dry ice to be used is provided. This is brought at the output of the dry ice hopper 1 by a grinder 13 in a suitable size and fed via a slot-like feed 3 a mixing chamber 2.
- two rows of water nozzles 4 are arranged on both sides of the feed 3, through which water is introduced into the mixing space 2.
- the dry ice and the water are introduced into the mixing space 2 substantially parallel, ie essentially in the same direction from above. This prevents the water from coming into contact with the dry ice when still in the liquid state.
- the mixing chamber 2 is cooled and insulated, wherein the air temperature in the mixing chamber 2 continues to cool due to the penetration of the dry ice.
- the water injected through the nozzles 4 freezes in the mixing space, so that when it reaches the walls of the upper first funnel-like area of the mixing area 2, it is already frozen to ice crystals.
- the water is only mixed in the frozen state with the dry ice.
- the mixing region 2 has a first funnel-shaped region 5, adjoined by a second region 7, which is also cooled and insulated.
- This second region 7 is basically designed like a chute and has an inlet 6 and an outlet 8.
- a first contact plate 9 is arranged, which protrudes inwardly from the cooled wall of the second region 7 and is directed downwards in a slide-like manner.
- This first contact plate 9 opposite slightly below a second identically formed contact plate 10 is arranged. This is in an analogous manner from the opposite wall of the second region 7 inwardly and also has slide-like down.
- the contact sheets 9, 10 Due to the size and arrangement of the contact sheets 9, 10 prevents the ice mixture falls directly through the second region 7 of the mixing region 2, but this must pass through the contact plates and slips from the first contact plate on the second contact plate, from this to the third contact plate etc. Since the contact sheets 9, 10 are cooled, cold is still transferred to the ice mixture during the residence time of the ice mixture on the contact plates. In addition, the dry ice releases some of its cold to the water ice. This causes the water ice to continue to cool down and increase in hardness.
- a metering device 11 is provided, by means of which the ice mixture is metered. Via an air supply 12, the ice mixture is removed from the metering device. The Ice mixture can then be fed directly to the actual jet device, wherein the mentioned air can be used already preheated as jet air.
- Compressed air can also be used to dry treated surfaces.
- water ice is radiated onto the surface to be treated, water remains on this.
- compressed air preferably preheated compressed air
- the compressed air generator which is used for generating said jet air, provide this compressed air for drying the blasted surfaces.
- the intended for drying compressed air is applied immediately after the blasting process on the surface to be dried. But it is also conceivable to apply these together with the blasting process. This can be done procedurally easier, since at the same time with the blasting compressed air is inflated and also leads to an accelerated drying of the blasted surface.
- the drying effect is accelerated by applying the compressed air with a time delay by applying the compressed air to the already blasted surface.
- a feed hopper 18 is provided in the second embodiment, which is divided into a first region 14 and a second region 15. Dry ice is supplied via the first region 14, whereas water ice is supplied via the second region 15. Both will be on the feeder 3 the Mixing chamber 2 supplied. However, before the ice enters the mixing chamber 2 via the feed 3, it is ground to the desired size via grinding devices 16, 17.
- the grinding device 16 is arranged in the end region of the first region 14 and serves for the comminution of the dry ice.
- the second grinding device 17 arranged parallel thereto serves in an analogous manner in the end region of the second region 15 for the comminution of the water ice.
- the dry ice is thus shredded as well as the water ice to the desired size and introduced in parallel from above via the feed 3 into the mixing chamber. Since the feed direction is identical, dry ice and water ice first fall down parallel in the mixing chamber 2, so that initially there is no contact between the two ice creams. Only in the lower part of the mixing chamber 2 is to be expected with a real mixing. However, at the latest in the second area 7, the two ice creams are mixed in a suitable manner and in particular the water ice in the manner described by means of cooled contact plates 10 further cooled.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Carbon And Carbon Compounds (AREA)
Claims (17)
- Procédé de production d'un mélange de glace et de neige sèche, dans lequel la neige sèche est introduite par le biais d'une alimentation (3) dans une zone supérieure dans une zone de mélange (2) et, à distance de celle-ci, essentiellement dans la même direction, de l'eau ou de la glace est introduite, la zone de mélange refroidie (2) étant située sous l'alimentation en neige sèche et en eau/glace et étant connectée à un dispositif de dosage (11) par le biais d'une sortie dans la zone inférieure, caractérisé en ce que dans la zone de mélange (2), la neige sèche et la glace ou le mélange de glace produit viennent en contact l'un(e) après l'autre sur plusieurs surfaces de contact refroidies (9, 10) qui sont prévues de manière décalée et tournée vers le bas de telle sorte que la glace ou le mélange de glace produit glisse vers le bas et soit davantage refroidi(e) pendant le temps de contact.
- Procédé selon la revendication 1, caractérisé en ce que la neige sèche est introduite par le biais d'une alimentation en forme de fente et l'eau ou la glace est introduite de manière espacée latéralement par le biais d'une buse de type fente ou par le biais d'une pluralité de buses disposées les unes derrière les autres.
- Procédé selon la revendication 1 ou 2, caractérisé en ce que la neige sèche et éventuellement la glace sont broyées avant leur alimentation.
- Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que de l'eau est introduite des deux côtés de la neige sèche introduite.
- Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le mélange de glace est dosé après la zone de mélange (2) par le biais d'un dispositif de dosage (11) et est distribué au moyen d'un flux d'air.
- Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'air du flux d'air est préchauffé.
- Dispositif pour mettre en oeuvre le procédé selon l'une quelconque des revendications 1 à 6, comprenant une zone d'introduction dans une zone supérieure, dans laquelle est prévue une alimentation en neige sèche (3), par le biais de laquelle de la neige sèche est introduite dans une zone de mélange (2) et de l'eau est introduite dans la zone de mélange (2) essentiellement dans la même direction, la zone de mélange refroidie (2) présentant une première zone en forme d'entonnoir (5) et une deuxième zone (7) qui est connectée à un dispositif de dosage (11) par le biais d'une sortie dans la zone inférieure, caractérisé en ce qu'au moins dans la deuxième zone (7) plusieurs surfaces de contact refroidies (9, 10) sont prévues, lesquelles sont prévues de manière décalée et tournée vers le bas de telle sorte que la glace ou le mélange de glace produit glisse vers le bas et soit davantage refroidi (e) pendant le temps de contact.
- Dispositif selon la revendication 7, caractérisé en ce que l'alimentation en neige sèche (3) est réalisée en forme de fente.
- Dispositif selon la revendication 7 ou 8, caractérisé en ce qu'à une distance prédéterminée de l'alimentation en neige sèche (3) sont disposées les unes derrière les autres une buse de type fente ou plusieurs buses (4) en vue de l'alimentation en eau ou en glace.
- Dispositif selon la revendication 9, caractérisé en ce que plusieurs buses (4) sont disposées en ligne ou sont décalées de manière alternée.
- Dispositif selon l'une quelconque des revendications 7 à 10, caractérisé en ce qu'à côté de l'alimentation en neige sèche (3), des buses (4) pour l'alimentation en eau ou en glace sont disposées sur au moins des côtés opposés.
- Dispositif selon l'une quelconque des revendications 7 à 11, caractérisé en ce que l'alimentation en neige sèche (3) est réalisée de telle sorte que la neige sèche soit introduite sous forme de rideau dans la zone de mélange (2).
- Dispositif selon l'une quelconque des revendications 7 à 12, caractérisé en ce que les buses (4) sont réalisées de telle sorte que l'eau ou la glace soit introduite sous forme de rideau à côté de la neige sèche sur un ou sur les deux côtés de la neige sèche.
- Dispositif selon l'une quelconque des revendications 7 à 13, caractérisé en ce que la deuxième zone (7) est disposée de telle sorte que le mélange de glace tombe sous l'effet de la force de gravité à travers celle-ci et vienne ainsi forcément en contact avec des surfaces de contact saillantes (9, 10).
- Dispositif selon l'une quelconque des revendications 7 à 14, caractérisé en ce que les surfaces de contact (9, 10) sont constituées d'un matériau bon conducteur thermique et sont refroidies.
- Dispositif selon l'une quelconque des revendications 7 à 15, caractérisé par un dispositif de dosage (11), au moyen duquel le mélange de glace quittant la zone de mélange (2) est dosé.
- Dispositif selon l'une quelconque des revendications 7 à 16, caractérisé par une alimentation en air (12) pour l'alimentation en air en vue de l'évacuation du mélange de glace.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110004923 DE102011004923A1 (de) | 2011-03-01 | 2011-03-01 | Verfahren und Vorrichtung zur Herstellung eines Trockeneiswassereisgemisches |
PCT/EP2012/053575 WO2012117077A1 (fr) | 2011-03-01 | 2012-03-01 | Procédé et dispositif destinés à préparer un mélange de glace carbonique et de glace d'eau en tant qu'agent de grenaillage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2681009A1 EP2681009A1 (fr) | 2014-01-08 |
EP2681009B1 true EP2681009B1 (fr) | 2015-08-05 |
Family
ID=45808877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12707539.8A Active EP2681009B1 (fr) | 2011-03-01 | 2012-03-01 | Méthode et dispositif pour la production d'une mélange de glace et neige sèche comme agent de projection |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2681009B1 (fr) |
DE (1) | DE102011004923A1 (fr) |
WO (1) | WO2012117077A1 (fr) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3814050A4 (fr) * | 2018-06-26 | 2022-03-09 | Coulson Ice Blast Ltd. | Machine de projection de glace à fonctionnement en mode double pour glace hydrique et glace carbonique |
US11503959B2 (en) | 2020-12-31 | 2022-11-22 | Sharkninja Operating Llc | Micro puree machine |
US11540669B2 (en) | 2020-12-31 | 2023-01-03 | Sharkninja Operating Llc | Micro puree machine |
USD983603S1 (en) | 2020-12-31 | 2023-04-18 | Sharkninja Operating Llc | Blade for a micro puree machine |
USD985334S1 (en) | 2020-12-31 | 2023-05-09 | Sharkninja Operating Llc | Nested bowl for a micro puree machine |
USD985331S1 (en) | 2020-12-31 | 2023-05-09 | Sharkninja Operating Llc | Housing for a micro puree machine |
US11871765B2 (en) | 2020-12-31 | 2024-01-16 | Sharkninja Operating Llc | Micro puree machine |
US12016496B2 (en) | 2020-12-31 | 2024-06-25 | Sharkninja Operating Llc | Micro puree machine |
US12022979B2 (en) | 2020-12-31 | 2024-07-02 | Sharkninja Operating Llc | Micro puree machine |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014124755A1 (fr) * | 2013-02-18 | 2014-08-21 | Jürgen Von Der Ohe | Procédé et dispositif de nettoyage au jet froid |
WO2015074766A1 (fr) * | 2013-11-25 | 2015-05-28 | Jürgen Von Der Ohe | Procédé et dispositif de nettoyage de turbomoteurs |
WO2015074765A1 (fr) * | 2013-11-25 | 2015-05-28 | Jürgen Von Der Ohe | Procédé de fabrication d'un agent de sablage, procédé de sablage, agent de sablage et dispositif de fabrication de l'agent de sablage |
DE102013224635A1 (de) * | 2013-11-29 | 2015-06-03 | Lufthansa Technik Ag | Verfahren und Vorrichtung zur Reinigung eines Strahltriebwerks |
DE102013224639A1 (de) | 2013-11-29 | 2015-06-03 | Lufthansa Technik Ag | Verfahren und Vorrichtung zur Reinigung eines Strahltriebwerks |
DE202016101964U1 (de) | 2015-04-20 | 2016-04-28 | Dca Deckert Anlagenbau Gmbh | Strahlvorrichtung |
JP6568319B2 (ja) * | 2016-01-27 | 2019-08-28 | コウルソン アイス ブラスト リミテッド | アイスブラスティングシステムおよび方法 |
CN115151379A (zh) | 2019-12-31 | 2022-10-04 | 冷喷有限责任公司 | 用于增强的喷射流的方法和装置 |
US12016493B2 (en) | 2020-12-31 | 2024-06-25 | Sharkninja Operating Llc | Micro puree machine |
US11154163B1 (en) | 2020-12-31 | 2021-10-26 | Sharkninja Operating Llc | Micro puree machine |
USD1021520S1 (en) | 2022-05-09 | 2024-04-09 | Sharkninja Operating Llc | Housing for a micro puree machine |
USD1021533S1 (en) | 2022-05-09 | 2024-04-09 | Sharkninja Operating Llc | User interface for a micro puree machine |
US12064059B2 (en) | 2022-05-18 | 2024-08-20 | Sharkninja Operating Llc | Lid and blade assembly for a micro puree machine |
USD1033134S1 (en) | 2022-07-05 | 2024-07-02 | Sharkninja Operating Llc | Blade for a micro puree machine |
DE202023002302U1 (de) | 2023-04-18 | 2024-03-08 | Jürgen v.d. Ohe | Vorrichtung zum Reinigen von Flächen und Anlagen mit einem mechanisch wirkenden kryogenen Strahlmittel aus tiefkaltem Wassereis |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3676963A (en) * | 1971-03-08 | 1972-07-18 | Chemotronics International Inc | Method for the removal of unwanted portions of an article |
US4655847A (en) * | 1983-09-01 | 1987-04-07 | Tsuyoshi Ichinoseki | Cleaning method |
JPS6065710A (ja) * | 1983-09-19 | 1985-04-15 | Ishikawajima Harima Heavy Ind Co Ltd | ドライアイスと氷の混合造粒方法及び装置 |
DE102006002653B4 (de) * | 2005-01-27 | 2009-10-08 | Luderer Schweißtechnik GmbH | Trockeneisstrahlverfahren |
DE102010020619A1 (de) * | 2009-05-26 | 2011-02-24 | Ohe, Jürgen von der, Dr.-Ing. | Verfahren und Vorrichtung zum Reinigen von metallischen oder nichtmetallischen Oberflächen unter Einsatz von Druckluft, einem kalten Strahlmittel, in Kombination mit einem festen Strahlmittel und/oder einem Strahlmittelgemisch |
DE102010020618B4 (de) * | 2009-05-26 | 2014-05-28 | Jürgen von der Ohe | Verfahren zur Herstellung von CO2-Pellets oder von CO2-Partikeln mit erhöhter mechanischer Härte und Abrasivität |
-
2011
- 2011-03-01 DE DE201110004923 patent/DE102011004923A1/de not_active Withdrawn
-
2012
- 2012-03-01 WO PCT/EP2012/053575 patent/WO2012117077A1/fr active Application Filing
- 2012-03-01 EP EP12707539.8A patent/EP2681009B1/fr active Active
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3814050A4 (fr) * | 2018-06-26 | 2022-03-09 | Coulson Ice Blast Ltd. | Machine de projection de glace à fonctionnement en mode double pour glace hydrique et glace carbonique |
US11904324B2 (en) | 2018-06-26 | 2024-02-20 | Coulson Ice Blast Ltd. | Ice blasting machine with dual-mode operation for water ice and dry ice |
USD983603S1 (en) | 2020-12-31 | 2023-04-18 | Sharkninja Operating Llc | Blade for a micro puree machine |
US11540669B2 (en) | 2020-12-31 | 2023-01-03 | Sharkninja Operating Llc | Micro puree machine |
USD985334S1 (en) | 2020-12-31 | 2023-05-09 | Sharkninja Operating Llc | Nested bowl for a micro puree machine |
USD985331S1 (en) | 2020-12-31 | 2023-05-09 | Sharkninja Operating Llc | Housing for a micro puree machine |
US11641978B2 (en) | 2020-12-31 | 2023-05-09 | Sharkninja Operating Llc | Micro puree machine |
USD1008735S1 (en) | 2020-12-31 | 2023-12-26 | Sharkninja Operating Llc | Blade for a micro puree machine |
US11871765B2 (en) | 2020-12-31 | 2024-01-16 | Sharkninja Operating Llc | Micro puree machine |
US11503959B2 (en) | 2020-12-31 | 2022-11-22 | Sharkninja Operating Llc | Micro puree machine |
US11925298B2 (en) | 2020-12-31 | 2024-03-12 | Sharkninja Operating Llc | Micro puree machine |
US12016496B2 (en) | 2020-12-31 | 2024-06-25 | Sharkninja Operating Llc | Micro puree machine |
US12022979B2 (en) | 2020-12-31 | 2024-07-02 | Sharkninja Operating Llc | Micro puree machine |
US12064056B2 (en) | 2020-12-31 | 2024-08-20 | Sharkninja (Hong Kong) Company Limited | Micro puree machine |
Also Published As
Publication number | Publication date |
---|---|
EP2681009A1 (fr) | 2014-01-08 |
DE102011004923A1 (de) | 2012-09-06 |
WO2012117077A1 (fr) | 2012-09-07 |
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