NL1013978C2 - Heated venturi block to direct stream of gaseous carbonic acid containing hard carbonic acid crystals onto work surface - Google Patents
Heated venturi block to direct stream of gaseous carbonic acid containing hard carbonic acid crystals onto work surface Download PDFInfo
- Publication number
- NL1013978C2 NL1013978C2 NL1013978A NL1013978A NL1013978C2 NL 1013978 C2 NL1013978 C2 NL 1013978C2 NL 1013978 A NL1013978 A NL 1013978A NL 1013978 A NL1013978 A NL 1013978A NL 1013978 C2 NL1013978 C2 NL 1013978C2
- Authority
- NL
- Netherlands
- Prior art keywords
- carbonic acid
- venturi
- carbon dioxide
- venturi block
- venturis
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C5/00—Devices or accessories for generating abrasive blasts
- B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
- B24C5/04—Nozzles therefor
-
- 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
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
Description
-1--1-
Inrichtina voor het bewerken van oppervlakken met koolzuurkristallen in een koolzuuraasstraal.Devices for processing surfaces with carbonic acid crystals in a carbonic acid jet.
De uitvinding betreft een inrichting voor het bewerken van 05 oppervlakken met koolzuurkristallen in een koolzuurgasstraal.The invention relates to an apparatus for processing 05 surfaces with carbon dioxide crystals in a carbon dioxide jet.
Het is bekend uit US-A-4,389,820 om koolzuursneeuw tot korrels te persen en deze met perslucht tegen objecten te stralen om deze objecten te reinigen.It is known from US-A-4,389,820 to compress carbon dioxide snow into granules and to blast these against objects with compressed air in order to clean these objects.
10 In de practijk blijkt deze inrichting te gebruiken te zijn bij grote objecten, echter met een laag rendement en een uitgebreide inrichting om de korrels te vormen en doseren. De uitvinding betreft nu een inrichting voor het bewerken van kleinere objecten met een eenvoudiger systeem.In practice, this device appears to be suitable for use with large objects, but with a low efficiency and an extensive device for forming and dosing the granules. The invention now relates to a device for processing smaller objects with a simpler system.
15 Hiertoe wordt uitsluitend vloeibaar koolzuur gebruikt dat in venturi's geëxpandeerd wordt onder zodanige omstandigheden dat een gasstraal ontstaat met een zeer hoge snelheid waarin zich harde koolzuurkristallen bevinden. Door een aantal venturi's te rangschikken in twee rijen en 20 deze te richten op een lijn welke op circa 60 millimeter van het venturiblok ligt ontstaat een soort van beitel.For this purpose, only liquid carbon dioxide is used, which is expanded in venturi under such conditions that a gas jet is produced at a very high speed in which hard carbon dioxide crystals are present. By arranging a number of venturi in two rows and aiming it at a line which is approximately 60 millimeters from the venturi block, a kind of chisel is created.
De uitvinding wordt besproken aan de hand van de tekening.The invention is discussed with reference to the drawing.
25 Fig. 1 toont een dwarsdoorsnede van het venturiblok.FIG. 1 shows a cross section of the venturi block.
Fig. 2 toont het aanzicht van het venturiblok.Fig. 2 shows the view of the venturi block.
Fig. 3 toont in perspectief de vorm van de venturi.Fig. 3 shows in perspective the shape of the venturi.
Fig. 4 toont het aanzicht van de venturiFig. 4 shows the view of the venturi
Fig. 5 toont een doorsnede over een gereedschap, uitgerust 30 met een venturiblok.Fig. 5 shows a section through a tool equipped with a venturi block.
In Fig. 1 is met (1) het venturiblok aangegeven. Bij (2) is het te bewerken oppervlak en bij (3) de bewerkingslijn. In venturiblok (1) zijn venturi's (4) in twee rijen 35 aangebracht. De hartlijnen van de venturi's zijn gericht op bewerkingsli jn (3) om daar het oppervlak (2) zo effectief mogelijk te bewerken.In FIG. 1, the venturi block is indicated by (1). At (2) the surface to be machined and at (3) the machining line. Venturi blocks (1) are arranged in two rows in venturi block (1). The centerlines of the venturi are directed to the processing line (3) in order to process the surface (2) as effectively as possible.
1 0 139 7 8 -2-1 0 139 7 8 -2-
Venturi's (4) hebben in hoofdzaak de vorm van een dubbele pyramide met de punt naar elkaar toe gericht. Bij (5) is het aanvoerdeel en bij (6) is het expansiedeel en beide zijn verbonden door keelopening (7). Bij voorkeur zijn er 05 17 venturi's in twee rijen (9 en 8 stuks). Het expansiedeel (6) gaat van de ronde keelopening (7) over naar een rechthoekige uittreeopening (8) en wel zodanig dat de hoek tussen de overstaande ribben (9) niet groter is dan 14 graden. Het aanvoerdeel (5) is korter en heeft een 10 afgeronde intreeopening (10).Venturis (4) are essentially double pyramid shaped with the tip facing each other. At (5) is the supply part and at (6) is the expansion part and both are connected by throat opening (7). Preferably there are 05 17 venturi in two rows (9 and 8 pieces). The expansion part (6) changes from the round throat opening (7) to a rectangular outlet opening (8), such that the angle between the opposite ribs (9) does not exceed 14 degrees. The supply part (5) is shorter and has a rounded entry opening (10).
In venturiblok (1) zijn twee electrische verwarmingselementen (11) aangebracht, welke dienen om door verhitting energie aan de stroom koolzuur toe te voegen. Een temperatuursensor (12) stuurt een regeleenheid voor de 15 verwarmingselementen (11).Two electric heating elements (11) are arranged in venturi block (1), which serve to add energy to the stream of carbon dioxide by heating. A temperature sensor (12) controls a control unit for the 15 heating elements (11).
Venturiblok (1) is vervaardigd uit goed warmtegeleidend materiaal, zoals roodkoper of aluminium.Venturi block (1) is made of good heat-conducting material, such as red copper or aluminum.
Gebleken is dat door zoveel warmte toe te voeren aan de venturi (4) dat de expansie geschiedt in het 20 temperatuurgebied tussen 17 en 35 graden Celcius de koolzuur kristalliseert in fijne harde kristallen terwijl door expansie een gasstraal van zeer hoge snelheid ontstaat. Een regelcircuit, verbonden met de temperatuursensor (12) houdt venturiblok (1) op de juiste 25 temperatuur.It has been found that by supplying so much heat to the venturi (4) that the expansion takes place in the temperature range between 17 and 35 degrees Celsius, the carbon dioxide crystallizes in fine hard crystals, while expansion produces a gas jet of very high speed. A control circuit, connected to the temperature sensor (12) keeps the venturi block (1) at the correct temperature.
In Fig. 5 is een voorbeeld van gereedschap dat met venturiblok (1) is uitgerust. Bij (13) is het aansluitblok voor electrische elementen (11) en temperatuursensor (12) waarvan de leidingen door kanaal (14) naar de regeleenheid 30 gaan. Toevoerkanaal (15) wordt gesloten met kraan (16) welke bediend wordt met handvat (17). Om kanalen (14) en (15) is isolerend handvat (18) aangebracht.In FIG. 5 is an example of a tool equipped with a venturi block (1). At (13) is the connection block for electrical elements (11) and temperature sensor (12), whose lines go through channel (14) to the control unit 30. Supply channel (15) is closed with tap (16) which is operated with handle (17). An insulating handle (18) is fitted around channels (14) and (15).
1 t f ja * ?1 t f yes *?
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1013978A NL1013978C2 (en) | 1999-12-29 | 1999-12-29 | Heated venturi block to direct stream of gaseous carbonic acid containing hard carbonic acid crystals onto work surface |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1013978 | 1999-12-29 | ||
NL1013978A NL1013978C2 (en) | 1999-12-29 | 1999-12-29 | Heated venturi block to direct stream of gaseous carbonic acid containing hard carbonic acid crystals onto work surface |
Publications (1)
Publication Number | Publication Date |
---|---|
NL1013978C2 true NL1013978C2 (en) | 2001-07-02 |
Family
ID=19770528
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL1013978A NL1013978C2 (en) | 1999-12-29 | 1999-12-29 | Heated venturi block to direct stream of gaseous carbonic acid containing hard carbonic acid crystals onto work surface |
Country Status (1)
Country | Link |
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NL (1) | NL1013978C2 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0288263A2 (en) * | 1987-04-22 | 1988-10-26 | The BOC Group, Inc. | Apparatus and method for removing minute particles from a substrate |
EP0372902A1 (en) * | 1988-12-06 | 1990-06-13 | The Boc Group, Inc. | Apparatus for removing small particles from a substrate |
DE4402247A1 (en) * | 1993-01-27 | 1994-07-28 | Sumitomo Heavy Industries | Surface cleaning with argon |
US5679062A (en) * | 1995-05-05 | 1997-10-21 | Ford Motor Company | CO2 cleaning nozzle and method with enhanced mixing zones |
US5765578A (en) * | 1995-09-15 | 1998-06-16 | Eastman Kodak Company | Carbon dioxide jet spray polishing of metal surfaces |
-
1999
- 1999-12-29 NL NL1013978A patent/NL1013978C2/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0288263A2 (en) * | 1987-04-22 | 1988-10-26 | The BOC Group, Inc. | Apparatus and method for removing minute particles from a substrate |
EP0372902A1 (en) * | 1988-12-06 | 1990-06-13 | The Boc Group, Inc. | Apparatus for removing small particles from a substrate |
DE4402247A1 (en) * | 1993-01-27 | 1994-07-28 | Sumitomo Heavy Industries | Surface cleaning with argon |
US5679062A (en) * | 1995-05-05 | 1997-10-21 | Ford Motor Company | CO2 cleaning nozzle and method with enhanced mixing zones |
US5765578A (en) * | 1995-09-15 | 1998-06-16 | Eastman Kodak Company | Carbon dioxide jet spray polishing of metal surfaces |
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Date | Code | Title | Description |
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PD2B | A search report has been drawn up | ||
VD1 | Lapsed due to non-payment of the annual fee |
Effective date: 20070701 |